IPL Closure Report by cityofindepmo

Ash Impoundment Closure Report Independence Power & Light Blue Valley Power Station 21500 East Truman Road Independence, Missouri 64056

Prepared for: Independence Power & Light P.O. Box 1019 Independence, Missouri 64051

Prepared by: SCS ENGINEERS 7311 West 130th Street, Suite 100 Overland Park, Kansas 66213 (913) 681-0030 April 2018 File No. 27215142.00

Offices Nationwide www.scsengineers.com

IP&L – Blue Valley Power Station

Ash Impoundment Closure Report and Independence Power & Light Blue Valley Power Station 21500 East Truman Road Independence, Missouri 64056

Prepared for: Independence Power & Light P.O. Box 1019 Independence, Missouri 64051

Prepared by: SCS ENGINEERS 7311 West 130th Street, Suite 100 Overland Park, Kansas 66213 (913) 681-0030 April 2018 File No. 27215142.00

IP&L – Blue Valley Power Station

Table of Contents Section

Page

Professional Engineer Closure Certification ................................................................................................. iii 1 Introduction.............................................................................................................................................. 1 1.1 Facility Background .....................................................................................................................1 1.2 Closure Under Federal Regulations ..........................................................................................1 2 Project Overview ................................................................................................................................... 3 2.1 Closure Design Summary ............................................................................................................3 2.2 Closure Activities and Timeline ..................................................................................................3 2.3 Construction Quality Assurance Procedures ............................................................................4 2.4 Organization ................................................................................................................................4 2.5 Meetings ........................................................................................................................................5 3 Subgrade Preparation ......................................................................................................................... 6 3.1 Dewatering and Draining Ash Impoundments.........................................................................6 3.2 Material Movement and Grading ............................................................................................6 4 Geosynthetic Clay Liner (GCL) ............................................................................................................ 8 5 Topsoil ...................................................................................................................................................... 9 6 Vegetation ............................................................................................................................................ 10 7 Berm Outlet Areas and Pressure Relief System ............................................................................. 11 7.1 Berm Breech and Outlet Areas .............................................................................................. 11 7.2 Pressure Relief System ............................................................................................................. 11 8 Clean Closure Area and Sedimentation Basin ............................................................................... 13 8.1 Clean Closure ............................................................................................................................ 13 8.2 Sedimentation Basin Construction........................................................................................... 14 9 Other Site Activities ............................................................................................................................. 16 9.1 Road Regrading........................................................................................................................ 16 9.2 Side Slope Grading ................................................................................................................. 16 9.3 Pump House Abandonment ..................................................................................................... 16 10 Survey .................................................................................................................................................... 17 11 Post-Closure Care Plan [40 CFR 257.104(d)] ................................................................................ 18 12 General Comments and Conclusions ................................................................................................ 19

IP&L – Blue Valley Power Station

Appendices Appendix A Construction Design Drawings A1 Design Drawings A2 Pressure Relief System Information Appendix B

Project Timeline

Appendix C

Photographs

Appendix D

Geosynthetic Clay Liner (GCL) D1 Material Inventories D2 GCL Manufacturer’s Certifications D3 CAR GCL Manufacturer’s Certifications D4 Panel Map

Appendix E

Final Cover Soils E1 Pre-Construction Topsoil Laboratory Testing and Mixing Plan E2 Topsoil Field Testing E3 Sand Field Testing E4 Soil Analysis and Fertilization Recommendations E5 Thickness Verification E6 Seeding Plan

Appendix F

Clean Closure Area

Appendix G Final As-Built Survey

IP&L – Blue Valley Power Station

P R O F E S S I O N A L E N G I N E E R C L O S U R E C E R T I F I C AT I O N I hereby certify, as a Professional Engineer in the State of Missouri, that based on the observations of field staff and review of tests performed during the following activities: 1. The closure of the approximately 16.7 acre North Fly Ash (NFA) pond located at the Blue Valley Power Station was completed in accordance with the requirements of Section 257.100, paragraphs (b)(1) through (4) of the CCR Rule (Closure by leaving CCR in place); 2. The closure of the approximately 13.8 acre South Fly Ash (SFA) pond located at the Blue Valley Power Station was completed in accordance with the requirements of Section 257.100, paragraphs (b)(1) through (4) of the CCR Rule (Closure by leaving CCR in place); 3. The closure of approximately 5.4 acres of the 8.1-acre Bottom Ash (BA) pond located at the Blue Valley Power Station was completed in accordance with the requirements of Section 257.100, paragraph (b)(1) through (4) of the CCR Rules (Closure by leaving CCR in place); and 4. The clean closure of approximately 2.7 acres of the of the 8.1-acre BA pond located at the Blue Valley Power Station was completed in accordance with the requirements of Section 257.100, paragraph (b)(5) of the CCR Rule (Closure through removal of CCR).

_______________________________________________________ Patrick M. Goeke, P.E. (E-19041) (License renewal date is 12/31/18) Digitally signed by Pat Goeke DN: cn=Pat Goeke, o=SCS Engineers, ou, email=pgoeke@scsengineers.com, c=US Date: 2018.04.20 12:23:17 -05'00'

iii

IP&L – Blue Valley Power Station

INTRODUCTION

Independence Power & Light (IP&L) owns and operates the Blue Valley Power Station (BVPS) located east of Independence, Missouri. The BVPS has three former coal combustion residuals (CCR) surface impoundments. The CCR surface impoundments are considered inactive as they ceased accepting CCR prior to October 14, 2015. This report summarizes the activities performed during closure of the BVPS inactive ash impoundments from July 2016 through December 2017. Additionally, this report discusses the post-closure care IP&L will be required to complete to maintain the final cover system (cap) on the ash impoundments and comply with the Post-Closure Plan for a period of 30 years as required by 257.104 (c)(1), except as provided in 257.104 (c)(2) (pending active 257.50(c) & 257.100 litigation as discussed in Post Closure Care Plan under separate cover).

1.1 FACILITY BACKGROUND Three surface impoundments containing CCR are located on the BVPS property, north of the power station. The original CCR surface impoundments, or ash impoundments, built in 1978, consisted of the South Fly Ash (SFA) Pond (approximately 13.8 acres) and the Bottom Ash (BA) Pond (approximately 8.1 acres). A third impoundment, the North Fly Ash (NFA) Pond (approximately 16.7 acres), was constructed in 1989. The maximum depth of ash in the three impoundments is approximately 15 feet. The SFA and BA Ponds are separated from the NFA Pond by a ditch that drains storm water from the power plant and residential properties to the west of the BVPS property. Water in the ditch discharges to the BVPS Missouri storm water permit Outfall 004. Storm water and sluice water from the ponds flowed via underground piping and temporary above ground piping to the BA Pond. From there, the water discharged to the Little Blue Valley Sewer District (LBVSD) through Outfall 002, which is located at a discharge structure in the southeast corner of the BA Pond.

1.2 CLOSURE UNDER FEDERAL REGULATIONS Power plant ash impoundments containing CCR are regulated under Section 257.100 of the Code of Federal Regulations (CFR) 40 Part 257. Under this “Closure Rule” regulation, the ash impoundments are required to be closed with a final cover system and maintained during a specified post-closure period. Closure of the CCR surface impoundments under 40 CFR 257.100 may be completed in one of two ways: 

Closure by leaving CCR in place [257.100(b)(1) through (4)] or “Closure-in-Place”, or



Closure through removal of CCR [257.100(b)(5)] or “Clean Closure”.

IP&L – Blue Valley Power Station

Closure-in-Place 1. The CCR surface impoundment must be capped in a manner that a. Minimizes post-closure infiltration of liquids into the ash or the release of CCR, contact water, or contaminated run-off to the ground, surface waters, or air; b. Prevents the probability of future impoundment of water; c. Prevents a slope failure or movement of the cover system; and d. Minimizes the need for further maintenance of the CCR unit. 2. Prior to final cover installation, a. Free liquids must be eliminated by removing liquid waste and solidifying remaining wastes; and b. The remaining waste must be stabilized sufficiently to support the final cover system. 3. The final cover system, or cap, must meet the following requirements: a. The permeability of the final cover system must be less than or equal to the bottom layer or underlying natural soil (1x10-7 cm/sec) b. The thickness of the compacted soil in the barrier soil layer must be a minimum of 18 inches of earthen material c. An erosion layer capable of sustaining native plant growth must be a minimum thickness of 6 inches, and d. The cover must be designed to minimize settlement and subsidence. 4. An alternate cover system meeting the requirements of number 3 above may be used. Alternative covers may include a geosynthetic clay liner (GCL) or other materials approved by the owner. Clean Closure 1. The CCR must be removed and properly disposed. 2. Any liner soils from the impoundments must be removed and properly disposed. 3. Any soils impacted by the CCR must be removed and properly disposed. IP&L decided to close the three ash impoundments using both closure-in-place and clean closure methodologies. The final cover system is an alternative cover system which includes a GCL and a minimum of 12 inches of erosion layer capable of sustaining native plant growth (referred to as topsoil). The specifics to the project are included in Sections 2.1 and 2.2.

IP&L – Blue Valley Power Station

PROJECT OVERVIEW

2.1 CLOSURE DESIGN SUMMARY The ash impoundments at the BVPS were closed with both the closure-in-place and clean closure methods. Clean closure occurred in an approximate 2.7-acre area in the southern portion of the BA pond. The remaining ash impoundment areas were closed-in-place. The clean closure area was converted to a sedimentation basin to manage facility process water flowing into Outfall 002, and discharging to the LBVSD. The closure-in-place areas consisted of the remaining ash impoundments. The ash was generally used as the subgrade to the final cover system. The ash was graded at slopes of approximately 1 percent or more to drain water off the cover system. The constructed final cover system generally includes the following from top to bottom:    

Vegetation Minimum of 12 inches of topsoil Geosynthetic Clay Liner (GCL) Subgrade consisting of fly ash or other stabilized material

During the design process, the volume and/or elevation of water that would remain in the ash following installation of the final cover system was unknown. Depending on the elevation of the pore water in the ash, there is the potential for the pore water to induce an uplift pressure on the underside of the cap, where the elevation of the cap is the lowest. To provide a method to monitor and possibly relieve potential uplift pressure on the cap, a pressure relief system was designed and installed in the areas where uplift could likely occur, and Coal Ash Resistance (CAR) GCL was used in lieu of the regular GCL. The pressure relief system was installed in four areas with uplift concern, which coincided with four of the five surface runoff outlet areas. These outlet areas were created by breeching and grading the impoundment embankment once the ash was protected from storm water. Some auxiliary items were completed on site, including regrading the roads and side slopes (where feasible), abandoning the pump house and associated piping, and rerouting piping and structures associated with the new sedimentation basin. A reduced size copy of the design drawings used for construction are included in Appendix A.

2.2 CLOSURE ACTIVITIES AND TIMELINE Closure construction started in July 2016 and was completed in November 2017. Construction activities generally progressed from the NFA pond, to the SFA Pond, and finally to the BA Pond. A general project timeline is included in Appendix B. The closure of the inactive surface impoundments generally included the following activities: 3

IP&L – Blue Valley Power Station



Dewatering and draining the CCR impoundments (Section 3.1);



Grading the CCR in preparation of the final cover subgrade (Section 3.2);



Installing the pressure relief system (Section 7.2);



Placing the GCL and CAR GCL (Section 4);



Placing and mixing the topsoil (Section 5);

 

Breeching the pond embankment to allow storm water drainage (Section 7.1); Seeding and establishing vegetation (Section 6);



Clean-closing the area for the new sedimentation basin (Section 8.1);



Constructing the sedimentation basin (Section 8.2); and



Implementing other miscellaneous site closure activities (Section 9).

2.3 CONSTRUCTION QUALITY ASSURANCE PROCEDURES Construction quality assurance (CQA) procedures included part-time oversight by the CQA consultant. The CQA consultant included the certifying engineer and the staff the certifying engineer managed, including field technicians and other support staff. Part-time oversight was completed by coordinating with the Facility Owner and Contractor as to the activities that were scheduled, and determining when it was appropriate for CQA staff to be on site. The CQA consultant reviewed information provided by the Facility Owner and Contractor when CQA staff was not present for closure activities. Site observations and activities were recorded on and included with photographs. Copies of construction photographs are included in Appendix C.

2.4 ORGANIZATION The following parties had substantial involvement in the closure project described herein. Facility Identification Blue Valley Power Station 21500 E. Truman Rd Independence, MO 64056 Facility Owner Independence Power & Light 17221 E. 23rd St. South Independence, MO 64051 816-325-6286

IP&L – Blue Valley Power Station

Contractor Radmacher Brothers Excavating Co., Inc. 2201 N. 7 Highway, Suite B Pleasant Hill, MO 64080 816-540-3614 Design Engineer and CQA Consultant SCS Engineers 7311 West 130th St, Suite 100 Overland Park, KS 66213 913-681-0030

2.5 MEETINGS A pre-construction “kick-off” meeting was held on June 28, 2016 to:    

Introduce parties involved in the project; Establish lines of communication; Develop a mutual understanding of the work, including CQA requirements; and Review the project schedule and site safety procedures.

In addition to the “kick-off” meeting, monthly progress meetings were held between the Facility Owner, Contractor, and CQA Consultant for the duration of the project. These meetings were held at the site at the beginning of each month starting in August 2016. These monthly meetings discussed general construction progress, upcoming schedules, needed information, questions, and concerns. Additional meetings and calls were held as needed to address specific construction items, daily activities, or schedule coordination.

IP&L – Blue Valley Power Station

S U B G R A D E P R E PA R AT I O N

Prior to constructing the final cover, the free water within the impoundments required removal. Therefore, the CCR was dewatered to allow for final grading to the final cover subgrade elevations. The following subsections present the CCR dewatering and subgrade preparation activities. The CQA Consultant’s representative was on site part time (approximately once per month) to observe the dewatering and general grading operations.

3.1 DEWATERING AND DRAINING ASH IMPOUNDMENTS The ash impoundments had varying degrees of moisture at the start of construction. Some areas were dry with sparse vegetation, while other areas were submerged in standing water. The first course of action to prepare the subgrade was to pump standing water from the impoundments. Following removal of the free water from the NFA Pond, the contractor used two methods to further dewater the ash. One method consisted of trenching drainage channels to a low point, or sump, in the ash. This allowed the water to drain from the ash into the trench and flow to the collection sumps. The excavated ash from the trenches was stockpiled to allow pore water to drain from the ash piles, further dewatering the ash. As the ash dewatered, the trenches were deepened into the ash. When the bottom of the ash was encountered in the trench, a clean sand was placed in the bottom of the trench to convey additional pore water drainage to the sump pumps. The water that collected in the sumps was pumped either to one of the other ponds, or to Outfall 002, which discharges to the LBVSD. The second method was used for approximately one month and consisted of installing a well point dewatering system in the NFA Pond. The contractor determined the well points system was less effective than the trenching method. Therefore, the well points system was removed and the Contractor continued the remainder of the ash dewatering using the trench and sump method. Another method of dewatering, draining, and drying included excavating the wet ash and stockpiling in another location in the ash impoundment to allow the ash to dry. During these activities, ash was not moved between ponds; ash remained in the pond from which it originated. The contractor used the trench and sump pump dewatering methods for the SFA and BA ponds.

3.2 MATERIAL MOVEMENT AND GRADING Once the ash was dry enough to support the equipment used to grade the ash, the ash in each pond was graded. As with the dewatering activities, ash was not transferred between the ponds, but was graded within its respective pond. The ash was graded to the base of the cover elevations, which provide a gentle slope of approximately 1 percent or more, to drain surface water falling on the cap to one of five surface water outlets from the ash impoundments. Three outlets were located to drain the surface of the NFA Pond, and two outlets were provided to drain 6

IP&L – Blue Valley Power Station

the surface of the combined SFA and BA Ponds. The BA pond had a sixth breech that lowered the northern portion of the berm between the two southern ponds to allow storm water falling on the BA Pond to flow off of the cap, through the northern outlet for the SFA Pond. The outlets and breeching the ash impoundment embankments are discussed further in Section 7.1. Low areas, where there was concern for excessively wet ash, were excavated and backfilled with sand/soil and ash to help solidify the material. The grading was completed with GPS equipped machinery to help achieve design grades. Minor fluctuations in elevations from the design grades were acceptable as long as the surface water would not pond on the cap of the ash impoundments. During the grading, ash was not moved between ash impoundments, and care was taken to prevent storm water that contacted the ash from leaving the ash impoundments.

IP&L – Blue Valley Power Station

G E O S Y N T H E T I C C L AY L I N E R ( G C L )

The contractor was given the option of constructing a prescriptive earthen cap or installing an alternate cap using a geosynthetic clay liner (GCL) as the impervious layer component of the final cover system. The GCL liner is a manufactured material consisting of a layer of bentonite clay sandwiched between two geotextile fabrics. The contractor elected to install the alternate cap. The GCL was installed directly on top of the prepared subgrade (stabilized ash). Two types of GCL were used with this project: regular GCL and Coal Ash Resistance (CAR) GCL. The regular GCL was a bentonite material encased in a geotextile, and the CAR GCL included an amendment to the bentonite to provide more resistance from chemical interactions with liquid that has contacted the ash. The regular GCL was utilized over the majority of the ash impoundments because the water flowing through the cap system and contacting the GCL would not be impacted by the ash. The CAR GCL was used in four areas where there was potential concern for hydrostatic uplift pressure on the final cover system that could cause impacted pore water to contact the underside of the GCL. The CQA Consultant’s representative was on site part time to observe the placement of the GCL and CAR GCL described above, and the covering of the GCL with the vegetative soil mix. Material inventory and manufacturer certifications were reviewed prior to installation. Copies can be found in Appendix D. The GCL was delivered to the site in rolls and was installed on the subgrade generally in a “shingled” pattern. Edges of the GCL panels were overlapped and loose granular bentonite was placed between the sheet overlaps. See Appendix D for a copy of the panel placement map. After GCL placement, the material was covered with soil to protect the GCL during the ongoing construction. The soil was later amended to create the topsoil used to support the final vegetation. Exposed edges of GCL were covered with plastic to protect from rain when there was concern that rainwater could contact the GCL, which would prematurely hydrate the GCL. Placement of GCL and soil in the NFA pond generally proceeded from the northwest corner toward the east and south. When the GCL installation was generally complete in the NFA Pond, the contractor began installing the GCL in the SFA Pond from north to south in the northern portion of the pond, and from south to north for the southern portion of the pond, with the dewatering trenches being covered last. After the trenched areas were backfilled with ash, the final GCL was placed in the SFA Pond. Following completion of GCL placement in the SFA pond, GCL was placed over the BA Pond, generally from south to north, following the final cap grades. Two of the three outlet areas in the NFA pond and both outlets in the SFA pond required CAR GCL to be installed above the under-drain system. The CAR GCL, in lieu of regular GCL, was installed above the pressure relief system, further described in Section 7.2.

IP&L – Blue Valley Power Station

TOPSOIL

The topsoil component of the final cover system was required under the CCR regulations to be at least 6 inches thick. For the GCL alternate cap option, SCS required a minimum topsoil layer of 12 inches or more to sustain vegetation. The topsoil was created by first laying down a clayey soil material to protect the GCL materials, as described in Section 4. As weather permitted and the time was close to the desirable season for seeding, a sand material was placed over the clayey soil, and the approximate 50/50 combination of clayey soil and sand were mixed together to form the topsoil layer. A disc and a spring-tooth harrow were used to mix the two materials, creating the topsoil layer with a measured thickness of at least 12 inches. Prior to placement, laboratory testing was conducted on the 50/50 composite mixture of the clay and sand materials to confirm the mixture met the gradation requirements for the topsoil component. Nutrients were also tested to determine what, if any, soil amendments were needed. Copies of these laboratory results are included in Appendix E. The depth of the topsoil was verified after the field mixing was completed by digging test pits or pot holes to the GCL layer at various locations on the final cover system of each pond. The total thickness of soil overlying the GCL and the thickness of the mixed topsoil layer were field measured, then the topsoil placed back into the test pits. A total of 55 test pits were dug throughout the three impoundments, including 24 in the NFA Pond, 21 in the SFA Pond, and 10 in the BA Pond. The final topsoil product consist of two layers, because the harrow could not be used through the entire topsoil thickness without possibly damaging the GCL layer. A map showing the approximate locations of the thickness verification test pits is included in Appendix E. In each test location, the total soil thickness overlying the GCL exceeded 12 inches. In general, the thickness of the mixed soil was at generally 12 inches thick.

IP&L – Blue Valley Power Station

V E G E T AT I O N

After the topsoil placement, the cap and disturbed areas were seeded. The soil was analyzed to determine the recommended amendments, copies of these reports and recommendations are included in Appendix E. Soil amendments were added to increase the nutrient content and lower the soil acidity in accordance with testing provided in the project submittal. The seed was an 80 percent Tall Fescue with 20 percent Red Clover seed mixture, applied at a rate of 4 pounds per 1,000 square feet. A cultipacker type seeder was used to place the seed. The seeded areas were then mulched and crimped. A copy of the seeding plan is included in Appendix E.

IP&L – Blue Valley Power Station

BERM OUTLET AREAS AN D PRESSURE RELIEF SYST EM

The impoundments were closed using the inverted bowl method designed by SCS. The advantage of this method is that it limits the amount of fill required to achieve design grades, by grading the final cover system to drain to one or more existing low points in existing ash topography, as opposed to grading the ash into a mound. After the ash was graded and the majority of the final cover system placed over the ash, a portion of the existing berm at the low point was removed to allow storm water falling on the final cover to runoff without ponding on the ash impoundment cap.

7.1 BERM BREECH AND OUTLET AREAS As stated previously in Section 3.2, the ash impoundment embankments were breeched in six locations to facilitate drainage from the final cap, of which five act as outlets to funnel water off of the cap system. Three breeches were made in the NFA Pond cap and two breeches were made in the SFA Pond cap. One breech of the BA Pond embankment was made through the berm between the SFA and BA Ponds to facilitate the drainage of the BA Pond through the northern outlet in the SFA Pond cap. The location of the breeches were based on the low points of the ash topography. When the berm was removed, the edge of the ash moved inward from the berm, leaving a wide area of compacted clay soil between the edge of the final cap and the outside slope of the embankment. Riprap was not placed over the compacted clay because it was not needed for either erosion control or uplift resistance as discussed in the following section. Riprap was placed on four of the five outlet areas (two on the NFA Pond cap and two on the SFA Pond cap). The riprap placement generally included a 6-inch thick aggregate bedding layer overlain by a 18-inch thick riprap layer. The gradation of the bedding and riprap layers were visually observed by the CQA Consultant and determined to be sufficient to meet the project requirements. In areas where riprap was placed, an 8-ounce/square yard geotextile was placed over the GCL before the small aggregate bedding layer was placed (approximately 6 inches thick), followed by the larger diameter riprap layer (approximately 18 inches thick).

7.2 PRESSURE RELIEF SYSTEM During the design phase of this closure project, SCS noted a possible concern for hydrostatic uplift pressures to form beneath the final cover system, especially in the low areas where ash was excavated to allow storm water to flow off the cap. SCS determined the weight of the alternate cap alone might be insufficient to resist the possible uplift pressures. Therefore, SCS added the riprap specification over the final cap in the low areas to serve as dead weight to resist possible uplift pressures and to act as an erosion protection layer for the cap in these areas where runoff is concentrated. Additionally, the pressure relief system was added to provide a means to remove water causing the hydrostatic uplift, without damaging the final cover system. The GCL in the areas of the pressure relief system was Coal Ash Resistant GCL to help prevent degradation of the regular GCL in these areas where the uplift pressure could bring ash-impacted water in contact with the cover system. 11

IP&L – Blue Valley Power Station

The pressure relief system included a trench near the outlet with sand bedding and a high density polyethylene (HDPE) DR 17 pipe. The pipe section placed in the trench within the ash impoundment was perforated, and was solid pipe at the 90 degree turn passing through the earthen berm forming the ash impoundment embankment. A flange was located on the end of the pipe, a valve installed to open and close the pressure relief system, and a pressure port installed in the pressurized portion of the system to check for pressure increases. The remainder of the pressure relief system was constructed to allow pore water under the final cover system to drain towards this pipe. The final cover and pressure relief system from top to bottom consisted of: 

18-inch minimum thickness riprap layer,



6-inch minimum thickness aggregate bedding rock layer,



8-ounce per square yard non-woven geotextile,



CAR GCL, and



200-mil double-sided geocomposite (200-mil geonet with 8-ounce per square yard nonwoven geotextile on each side).

A detail with the general design requirements for the pressure relief system and a map showing the approximate locations where CAR GCL was installed is included in Appendix A.

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C L E A N C L O S U R E A R E A A N D S E D I M E N T AT I O N B A S I N

This section discusses the Clean Closure of the southern approximately 2.7 acres of the BA Pond. Following clean closure of this area, a sedimentation basin was constructed in the clean closure footprint by the placement of a low permeability soil liner. Sedimentation basin construction is not regulated by the CCR rule or Missouri Regulations as water discharges to the LBVSD through Outfall 002 and therefore construction activities are summarized but not discussed in detail with this report.

8.1 CLEAN CLOSURE In accordance with the CCR Federal Rule [40 CFR Part 257.100], a portion of the BA Pond was “Clean Closed” (per 40 CFR Part 257.100(b)(5)). Under the Federal CCR Rule, clean closure requires the removal of the CCR, any liner that may be present, and soil impacted by the ash. The BA Pond was designed in 1977 and constructed in 1978. The 1977 Geotechnical Information Report (boring logs and laboratory test data) from the design were provided by IP&L and indicated the foundation soils are high plastic alluvial clays with a permeability in the range of approximately 2x10-7 to 1x10-8 centimeters per second (cm/sec). Construction drawings and specifications were unable to be located. Without the construction documents or record drawings, it is unknown whether a liner system was installed under the ash impoundment. In accordance with the Federal CCR Rule and based on the assumed foundation soil conditions as noted above, the clean closure activities took place in four stages: 1. Ash removal: Removal of the existing ash from the closure area; 2. Liner exploration: Examination of the bottom of the clean closure area to determine if a liner system was present; 3. Clean closure sampling: Sampling of the foundation/bottom of the clean closure area and laboratory analysis to determine if the ash and potentially impacted soils were present and subsequently removed; and 4. Closure sample testing and analytical results evaluation: Laboratory testing and review of the sampling results. The clean closure area consisted of approximately 2.7 acres of the southern portion of the BA Pond impoundment. The contractor excavated the ash from the impoundment down to the underlying native alluvial clays forming the bottom of the impoundment. The ash excavated from this area was relocated to the north portion of the BA Pond impoundment as part of the final grading for future capping of the ash impoundment. To determine if a liner system was present under the former bottom ash impoundment, SCS observed the excavation of seven test pits in two phases as the ash excavation progressed (on January 12, 2017 and February 6, 2017). The test pits were visually observed and photographed by a professional geotechnical engineer to determine if there was evidence of a liner system in

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the BA Pond impoundment. Visual observation of the test pits did not reveal evidence that a liner system was present on top of the native alluvial clays described in 1977 Geotechnical Information Report. Test pits excavated on the west half of the impoundment visually indicated the presence of native clays, approximately 6 to 12 inches deep, that may have been impacted by the bottom ash. To provide a level base for the new sedimentation basin lining system materials were excavated to an elevation of approximately 747.75 feet mean sea level across the base of the clean closure area. During the excavation of the seven test pits to explore for a liner system, soil samples were collected from the foundation soils in each test pit. These samples were analyzed to determine if the foundation soils were potentially impacted by the overlying CCR. The results of the clean closure documentation is summarized in a memo included in Appendix F. The locations of the test pits are shown on the Figure 1 of the clean closure memo in Appendix F. Soil samples were generally collected from depths of 0 to 12 inches, 12 to 24 inches, and 24 to 36 inches below the bottom of the ash excavation. In the test pits on the western portion of the pond bottom, where it was determined that additional excavation would take place, three soil samples were collected from the indicated depths below the soil to be removed at each of the three test pits. For comparison purposes, three test pits were excavated in the area up gradient and west of the BA Pond impoundment to collect samples of the alluvial clays from the bottom of the borrow area used during the initial pond construction. The elevation of the background test pits and the test pits in the bottom of the ash pond were similar elevations, and the soils appeared similar in visual appearance and color and of a similar soil classification. The observations of the clean closure test pits and the laboratory data indicate no evidence a liner system was installed during construction of the former bottom ash impoundments. SCS observed the removal of the ash from the clean closure area and soil that visually appeared to have been possibly impacted by the storage of ash. It is SCS’s professional opinion that the designated 2.7-acre area of the former BA Pond impoundment has been closed using the “Clean Closure” measures outlined in the Federal CCR Rule [40 CFR Part 257.100(b)(5)]. The results of the analytical testing and analysis of the data are summarized in a memorandum dated May 17, 2017, provided in Appendix F.

8.2 SEDIMENTATION BASIN CONSTRUCTION The sedimentation basin does not require a wastewater permit from the state of Missouri, because the discharge from the pond is to a publicly owned treatment works (POTW). At the request to the Missouri Department of Natural Resources (MDNR), on behalf of IP&L, SCS submitted the closure plans and specifications (which included the sedimentation basin construction) to MDNR for their review to confirm the sedimentation basin was an engineered structure. The sedimentation basin was constructed to treat plant water and runoff from the coal yard prior to discharge to the LBVSD through Outfall 002. The piping from the plant enters the sedimentation basin in the southwest corner of the basin. The pipe from the coal yard, that

IP&L – Blue Valley Power Station

previously discharged into the BA Pond, was modified with the installation of a new manhole to allow the water from the coal yard to enter the sedimentation basin in the northeast corner of the basin. Water from the sedimentation basin discharges into the existing LBVSD outfall (Outfall 002) that was previously used when the BA Pond served as the site sedimentation basin. Following the clean closure determination for the sedimentation basin footprint, the contractor removed additional foundation soil to achieve the design subgrade elevation for the compacted clay liner of the sedimentation basin. The contractor constructed a divider berm between sedimentation basin and the BA Pond. The divider berm was constructed to confine the bottom ash to the north of the sedimentation basin so that the northern berm of the sedimentation basin would not be constructed on or over bottom ash, in compliance with Federal regulations. The divider berm included the clay liner system. The contractor then placed the 12-inch thick low permeability soil liner and conducted nuclear density testing to check for permeability of the soil liner system. The liner was constructed over the east and west sidewalls and the bottom of the excavation. Based on field conditions and concerns of elevated groundwater levels in fill located south of the sedimentation basin, a field modification was made to the southern slope to be a more robust soil buttress with additional riprap added at the toe of the slope. Additionally, a pressure relief groundwater interceptor trench was also constructed to help alleviate potential pressure build up behind the buttress on the southern slope. IP&L elected to have the contractor install riprap on the clay embankment for both erosion protection and to control vegetation and maintenance on the sedimentation pond side slopes.

IP&L – Blue Valley Power Station

O T H E R S I T E AC T I V I T I E S

As part of the ash impoundments closure project, the following other activities were conducted.

9.1 ROAD REGRADING The embankment crests for the ash ponds were previously paved with gravel to allow for vehicle crossings around the site for maintenance, as well as for access of heavy equipment to serve the power lines crossing over the closed ponds. Since access around the impoundments for maintenance is no longer needed, most of the gravel roads were removed as part of the closure, except for the gravel roads needed to access the power poles for the power transmission line(s).

9.2 SIDE SLOPE GRADING As part of the design, where the crest elevation of the embankment was being lowered as part of the final cap grading, the contractor flattened certain side slopes to allow for easier maintenance of the remaining slopes.

9.3 PUMP HOUSE ABANDONMENT The pump house located at the north end of the BA Pond included pumps to distribute ash sluice water from the plant to the various ponds, and to return sluice water from the ponds back to the plant. Prior to the start of the closure activities, IP&L removed the pumps and salvageable electrical equipment from the pump house. When the dewatering activities for the BA Pond were complete, the contractor pumped grout into the line into the pump house and installed blank flanges on the pipes. The pipes were grouted and blank-flanged to prevent pore water from the ash under the cap from seeping out of the ponds through the old process piping. Following pipe grouting, the pump house pit was backfilled with clean gravel.

IP&L – Blue Valley Power Station

SURVEY

The contractor used GPS-controlled dozers to grade the ash and topsoil to the design grades. The Contractor provided surveys of the clean closure area and locations of the test pits for topsoil thickness verification and the pressure relief system valves. Following completion of the final cover system, the contractor completed a final topographic survey of the cap on each pond. A copy of the final as-built topographic survey is presented in Appendix G.

IP&L – Blue Valley Power Station

P O S T- C L O S U R E C A R E P L A N [ 4 0 C F R 2 5 7 . 1 0 4 ( d ) ]

A Post-Closure Care Plan was prepared for the former Blue Valley CCR Surface Impoundments as is a separate document. The plan was prepared by SCS Engineers dated January 2018.

IP&L – Blue Valley Power Station

GENERAL COMMENTS AND CONCLUSIONS

This Closure Report summarizes the construction activities related to closure of three ash impoundments at the Blue Valley Power Station in Independence, Missouri. The closure construction was observed by the CQA Consultant on a part time basis and documented by photographs in Appendix C. Other information included in this report, not observed by the CQA Consultant, was provided by the Contractor or the Facility Owner. Certification of this closure report does not relieve the Facility Owner from appropriately managing, reporting, and/or documenting any legal requirements of the CCR Rule and the PostClosure Care Plan (Section 11).

Appendix A Construction Design Drawings A1: Design Drawings A2: Pressure Relief System

A1: Design Drawings

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6,7( /2&$7,21 0$3

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NORTH ASH IMPOUNDMENT

SOUTH FLY ASH IMPOUNDMENT

BOTTOM ASH IMPOUNDMENT

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,1'(3(1'(1&( 32:(5 /,*+7

S. POWELL RD.

( 7580$1 5' ,1'(3(1'(1&( 0,66285, INDEPENDENCE POWER AND LIGHT BLUE VALLEY POWER STATION

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,668(' )25 %,'',1* This document was originally sealed by Patrick M. Goeke, P.E.; Kansas license number E-19041 on 2/3/2016 with Revision 1 on 2/5/2016. An original sealed copy is stored at SCS Engineers, Overland Park, Kansas.

APPROXIMATE ASH IMPOUNDMENT BOUNDARY FENCE (APPROXIMATE) EXISTING ROAD RAILROAD TRACKS OVERHEAD ELECTRIC (APPROXIMATE)

ASH IMPOUNDMENT BOUNDARIES, FENCING, EXISTING ROADS, RAILROAD TRACKS, STRUCTURES, AND UTILITIES ARE APPROXIMATE.

UTILITY LOCATIONS WILL BE VERIFIED BY CONTRACTOR PRIOR TO CONSTRUCTION.

OVERHEAD POWER LINE TO BE REMOVED BY INDEPENDENCE POWER & LIGHT BEFORE START OF CONSTRUCTION.

$(5,$/ 6859(<

AERIAL IMAGE FROM SHAFER, KLINE, & WARREN, INC. DATED JULY 2015.

NORTH FLY ASH IMPOUNDMENT

PLANT WASTE WATER PIPE TRANSITION TO UNDERGROUND PIPE

( 7580$1 5' ,1'(3(1'(1&( 0,66285,

METAL PUMP HOUSE BUILDING

%/8( 9$//(< 32:(5 67$7,21

BOTTOM ASH IMPOUNDMENT

ABOVEGROUND PIPE

PLANT WASTE WATER ABOVEGROUND PIPE

This document was originally sealed by Patrick M. Goeke, P.E.; Kansas license number E-19041 on 2/3/2016 with Revision 1 on 2/5/2016. An original sealed copy is stored at SCS Engineers, Overland Park, Kansas.

100 SCALE

100

: WK 6W 6WH 2YHUODQG 3DUN .DQVDV 3+ )$;

UNDERGROUND PIPING FROM PUMP HOUSE AND BOTTOM ASH POND

,1'(3(1'(1&( 32:(5 /,*+7

SOUTH FLY ASH IMPOUNDMENT

6&6 $48$7(55$

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POWER / LIGHT POLE PLANT WATER/CONTACT WATER PIPELINES COAL PILE WATER UNDERGROUND PIPING ABOVEGROUND PIPING

$6+ ,03281'0(17 &/2685( &216758&7,21 3/$16

NOTES:

LEGEND:

200 FEET

)25 6,7( 25,(17$7,21 21/<

LEGEND:

ASH IMPOUNDMENT BOUNDARIES, FENCING, EXISTING ROADS, RAILROAD TRACKS, STRUCTURES, AND UTILITIES ARE APPROXIMATE.

UTILITY LOCATIONS WILL BE VERIFIED BY CONTRACTOR PRIOR TO CONSTRUCTION.

OVERHEAD POWER LINE TO BE REMOVED BY INDEPENDENCE POWER & LIGHT BEFORE START OF CONSTRUCTION.

,1'(3(1'(1&( 32:(5 /,*+7

SOUTH FLY ASH IMPOUNDMENT

UNDERGROUND PIPING FROM PUMP HOUSE AND BOTTOM ASH POND

BOTTOM ASH IMPOUNDMENT

METAL PUMP HOUSE BUILDING

PLANT WASTE WATER PIPE TRANSITION TO UNDERGROUND PIPE

( 7580$1 5' ,1'(3(1'(1&( 0,66285,

NORTH FLY ASH IMPOUNDMENT

%/8( 9$//(< 32:(5 67$7,21

SOUTH FLY ASH IMPOUNDMENT BOUNDARY

ABOVEGROUND PIPE

6&6 $48$7(55$

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POWER / LIGHT POLE PLANT WATER/CONTACT WATER PIPELINES COAL PILE WATER UNDERGROUND PIPING ABOVEGROUND PIPING

TOPOGRAPHIC SURVEY FROM SHAFER, KLINE, & WARREN, INC. DATED JULY 2015.

PLANT WASTE WATER ABOVEGROUND PIPE

100 SCALE

100

200 FEET

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EXISTING ROAD RAILROAD TRACKS OVERHEAD ELECTRIC (APPROXIMATE)

(;,67,1* 6,7( &21',7,216

EXISTING 5' CONTOUR EXISTING 1' CONTOUR APPROXIMATE ASH IMPOUNDMENT BOUNDARY FENCE (APPROXIMATE)

$6+ ,03281'0(17 &/2685( &216758&7,21 3/$16

NOTES:

LEGEND:

TOPOGRAPHIC SURVEY FROM SHAFER, KLINE, & WARREN, INC. DATED JULY 2015.

ASH IMPOUNDMENT BOUNDARIES, FENCING, EXISTING ROADS, RAILROAD TRACKS, STRUCTURES, AND UTILITIES ARE APPROXIMATE.

EXISTING 5' CONTOUR EXISTING 1' CONTOUR APPROXIMATE ASH IMPOUNDMENT BOUNDARY FENCE (APPROXIMATE)

UTILITY LOCATIONS WILL BE VERIFIED BY CONTRACTOR PRIOR TO CONSTRUCTION. OVERHEAD POWER LINE TO BE REMOVED BY INDEPENDENCE POWER & LIGHT BEFORE START OF CONSTRUCTION.

EXISTING ROAD RAILROAD TRACKS

POWER / LIGHT POLE PLANT WATER/CONTACT WATER PIPELINES COAL PILE WATER UNDERGROUND PIPING

UNDERGROUND PIPING FROM PUMP HOUSE AND BOTTOM ASH POND

$6+ ,03281'0(17 &/2685( &216758&7,21 3/$16 ( 7580$1 5' ,1'(3(1'(1&( 0,66285,

: WK 6W 6WH 2YHUODQG 3DUN .DQVDV 3+ )$;

,1'(3(1'(1&( 32:(5 /,*+7

NORTH FLY ASH IMPOUNDMENT

%/8( 9$//(< 32:(5 67$7,21

SOUTH FLY ASH IMPOUNDMENT BOUNDARY

(;,67,1* 1257+ $6+ ,03281'0(17

ABOVEGROUND PIPING

6&6 $48$7(55$

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OVERHEAD ELECTRIC (APPROXIMATE)

METAL PUMP HOUSE BUILDING

0 SCALE

FEET

LEGEND:

NOTES: 1.

TOPOGRAPHIC SURVEY FROM SHAFER, KLINE, & WARREN, INC. DATED JULY 2015.

EXISTING 5' CONTOUR EXISTING 1' CONTOUR

SOUTH FLY ASH IMPOUNDMENT BOUNDARY

UTILITY LOCATIONS WILL BE VERIFIED BY CONTRACTOR PRIOR TO CONSTRUCTION.

APPROXIMATE ASH IMPOUNDMENT BOUNDARY FENCE (APPROXIMATE) EXISTING ROAD RAILROAD TRACKS

OVERHEAD POWER LINE TO BE REMOVED BY INDEPENDENCE POWER & LIGHT BEFORE START OF CONSTRUCTION.

OVERHEAD ELECTRIC (APPROXIMATE) POWER / LIGHT POLE PLANT WATER/CONTACT WATER PIPELINES COAL PILE WATER UNDERGROUND PIPING

( 7580$1 5' ,1'(3(1'(1&( 0,66285,

UNDERGROUND PIPING FROM PUMP HOUSE AND BOTTOM ASH POND

%/8( 9$//(< 32:(5 67$7,21

,1'(3(1'(1&( 32:(5 /,*+7

(;,67,1* 6287+ $6+ ,03281'0(176

$6+ ,03281'0(17 &/2685( &216758&7,21 3/$16

ABOVEGROUND PIPING

NORTH FLY ASH IMPOUNDMENT BOUNDARY

ABOVEGROUND PIPE PLANT WASTE WATER PIPE TRANSITION TO UNDERGROUND PIPE

0 SCALE

: WK 6W 6WH 2YHUODQG 3DUN .DQVDV 3+ )$;

METAL PUMP HOUSE BUILDING

6&6 $48$7(55$

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ASH IMPOUNDMENT BOUNDARIES, FENCING, EXISTING ROADS, RAILROAD TRACKS, STRUCTURES, AND UTILITIES ARE APPROXIMATE.

FEET

LEGEND:

UTILITY LOCATIONS WILL BE VERIFIED BY CONTRACTOR PRIOR TO CONSTRUCTION.

NEW CONTOURS ARE THE BOTTOM OF THE FINAL COVER SYSTEM. THIS GENERALLY REPRESENTS THE TOP OF ASH IF INSIDE ASH IMPOUNDMENTS OR TOP OF SUBGRADE IF OUTSIDE ASH IMPOUNDMENTS. FIELD ADJUSTMENTS WILL BE NECESSARY.

IMPOUNDMENT AREAS WITH RIP RAP LINED DISCHARGE STRUCTURES WILL REQUIRE ADDITIONAL EXCAVATION TO ALLOW FOR APPLICABLE FINAL COVER COMPONENTS (SPECIFIC TO THE FINAL COVER OPTION) UNDER THE RIP RAP. SEE DETAIL 5 ON DRAWING 14.

SEE DRAWINGS 9 THROUGH 12 FOR CROSS SECTIONS.

SEE SPECIFICATIONS FOR FURTHER INFORMATION.

PIPES CARRYING PLANT WATER FROM THE POWER STATION WILL BE DISCONNECTED IN THE AREAS NEEDED FOR CLEAN CLOSURE AND CONSTRUCTION OF THE SETTLING BASIN. A NEW PIPE WILL BE RECONNECTED TO THE EXISTING SYSTEM AND BE INSTALLED TO DISCHARGE INTO THE NEWLY CONSTRUCTED SETTLING BASIN.

BOTTOM ASH IMPOUNDMENT BOUNDARY

,1'(3(1'(1&( 32:(5 /,*+7

ABANDON UNDERGROUND PIPING FROM PUMP HOUSE AND BOTTOM ASH POND IF BELOW FINAL COVER

PLANT WASTE WATER PIPE TRANSITION TO UNDERGROUND PIPE (SEE NOTE 8)

$6+ ,03281'0(17 &/2685( &216758&7,21 3/$16

ASH IMPOUNDMENT BOUNDARIES, FENCING, EXISTING ROADS, RAILROAD TRACKS, STRUCTURES, AND UTILITIES ARE APPROXIMATE.

100 SCALE

100

200 FEET

( 7580$1 5' ,1'(3(1'(1&( 0,66285,

SOUTH FLY ASH IMPOUNDMENT BOUNDARY

%/8( 9$//(< 32:(5 67$7,21

NEW GRAVEL ACCESS ROAD (SEE DETAIL 6)

TOPOGRAPHIC SURVEY FROM SHAFER, KLINE, & WARREN, INC. DATED JULY 2015.

6&6 $48$7(55$

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EXISTING ROAD RAILROAD TRACKS OVERHEAD ELECTRIC (APPROXIMATE)

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EXISTING 5' CONTOUR EXISTING 1' CONTOUR APPROXIMATE ASH IMPOUNDMENT BOUNDARY FENCE (APPROXIMATE)

1(: %$6( 2) ),1$/ &29(5 *5$'(

NOTES:

ASH IMPOUNDMENT BOUNDARIES, FENCING, EXISTING ROADS, RAILROAD TRACKS, STRUCTURES, AND UTILITIES ARE APPROXIMATE.

UTILITY LOCATIONS WILL BE VERIFIED BY CONTRACTOR PRIOR TO CONSTRUCTION.

SEE DRAWINGS 9 THROUGH 12 FOR CROSS SECTIONS.

SEE SPECIFICATIONS FOR FURTHER INFORMATION.

NEW GRAVEL ACCESS ROAD (SEE DETAIL 6)

ABANDON UNDERGROUND PIPING FROM PUMP HOUSE AND BOTTOM ASH POND IF BELOW FINAL COVER

LEGEND: EXISTING 5' CONTOUR EXISTING 1' CONTOUR APPROXIMATE ASH IMPOUNDMENT BOUNDARY FENCE (APPROXIMATE) EXISTING ROAD RAILROAD TRACKS OVERHEAD ELECTRIC (APPROXIMATE) POWER / LIGHT POLE

: WK 6W 6WH 2YHUODQG 3DUN .DQVDV 3+ )$;

,1'(3(1'(1&( 32:(5 /,*+7

SOUTH FLY ASH IMPOUNDMENT BOUNDARY

$6+ ,03281'0(17 &/2685( &216758&7,21 3/$16

( 7580$1 5' ,1'(3(1'(1&( 0,66285,

TOPOGRAPHIC SURVEY FROM SHAFER, KLINE, & WARREN, INC. DATED JULY 2015.

%/8( 9$//(< 32:(5 67$7,21

REGRADE STEEP EMBANKMENT AREAS TO SHALLOWER SLOPES (SEE DETAIL 3)

6&6 $48$7(55$

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REGRADE STEEP EMBANKMENT AREAS TO SHALLOWER SLOPES (SEE DETAIL 3)

1(: 1257+ $6+ ,03281'0(17

NOTES:

PLANT WATER/CONTACT WATER PIPELINES COAL PILE WATER UNDERGROUND PIPING ABOVEGROUND PIPING NEW 5' CONTOUR NEW 1' CONTOUR

BOTTOM ASH IMPOUNDMENT BOUNDARY

NEW 5' STORM WATER BASIN CONTOUR SCALE NEW 1' STORM WATER BASIN CONTOUR

FEET

PLANT WATER/CONTACT WATER PIPELINES

TOPOGRAPHIC SURVEY FROM SHAFER, KLINE, & WARREN, INC. DATED JULY 2015.

EXISTING 1' CONTOUR

COAL PILE WATER UNDERGROUND PIPING 2.

APPROXIMATE ASH IMPOUNDMENT BOUNDARY

ABOVEGROUND PIPING

ASH IMPOUNDMENT BOUNDARIES, FENCING, EXISTING ROADS, RAILROAD TRACKS, STRUCTURES, AND UTILITIES ARE APPROXIMATE.

FENCE (APPROXIMATE)

NEW 5' CONTOUR

UTILITY LOCATIONS WILL BE VERIFIED BY CONTRACTOR PRIOR TO CONSTRUCTION.

EXISTING ROAD

NEW 1' CONTOUR 4.

RAILROAD TRACKS

NEW 5' STORM WATER BASIN CONTOUR

OVERHEAD ELECTRIC (APPROXIMATE)

NEW 1' STORM WATER BASIN CONTOUR

SEE DRAWINGS 9 THROUGH 12 FOR CROSS SECTIONS.

SEE SPECIFICATIONS FOR FURTHER INFORMATION.

ABANDON UNDERGROUND PIPING FROM PUMP HOUSE AND BOTTOM ASH POND IF BELOW FINAL COVER

NORTH FLY ASH IMPOUNDMENT BOUNDARY BOTTOM ASH IMPOUNDMENT BOUNDARY

0 SCALE

FEET

: WK 6W 6WH 2YHUODQG 3DUN .DQVDV 3+ )$;

,1'(3(1'(1&( 32:(5 /,*+7

SOUTH FLY ASH IMPOUNDMENT BOUNDARY

6&6 $48$7(55$

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NEW GRAVEL ACCESS ROAD (SEE DETAIL 6)

$6+ ,03281'0(17 &/2685( &216758&7,21 3/$16

EXISTING 5' CONTOUR

( 7580$1 5' ,1'(3(1'(1&( 0,66285,

REGRADE STEEP EMBANKMENT AREAS TO SHALLOWER SLOPES (SEE DETAIL 3)

%/8( 9$//(< 32:(5 67$7,21

NOTES:

1(: 6287+ $6+ ,03281'0(176

POWER / LIGHT POLE

LEGEND:

PLANT WASTE WATER PIPE TRANSITION TO UNDERGROUND PIPE (SEE NOTE 8)

SEDIMENTATION BASIN EXISTING ELEVATION

50 50

EXISTING DRAINAGE DITCH

NEW ELEVATION TOP OF ASH OR SUBGRADE EMBANKMENT EXCAVATION

B' EMBANKMENT EXCAVATION

100

( 7580$1 5' ,1'(3(1'(1&( 0,66285,

NORTH ASH IMPOUNDMENT

%/8( 9$//(< 32:(5 67$7,21

,1'(3(1'(1&( 32:(5 /,*+7

REDUCE SLOPE STEEPNESS AND FINE GRADE (SEE DETAIL 3)

: WK 6W 6WH 2YHUODQG 3DUN .DQVDV 3+ )$;

NORTH ASH IMPOUNDMENT BOUNDARY

$6+ ,03281'0(17 &/2685( &216758&7,21 3/$16

&5266 6(&7,216 1257+ ,03281'0(176

NEW ELEVATION TOP OF ASH OR SUBGRADE

6&6 $48$7(55$

NORTH ASH IMPOUNDMENT BOUNDARY

NOTES:

NEW GRADE TOP OF ASH OR SUBGRADE (BOTTOM OF FINAL COVER)

SOUTH ASH IMPOUNDMENT

BOTTOM ASH IMPOUNDMENT

EXISTING ELEVATION

B NORTH ASH IMPOUNDMENT BOUNDARY

FINAL COVER EXTENDS TO LIMITS OF ASH WHERE CAP TIES INTO EXISTING CLAY EMBANKMENT.

IMPOUNDMENT BOUNDARIES ARE APPROXIMATE.

NORTH ASH IMPOUNDMENT BOUNDARY

1 ?&LW\ RI ,QGHSHQGHQFH?,QGHSHQGHQFH 3RZHU /LJKW?3URMHFWV? $VK 3RQG &ORVXUH 'HVLJQ?$XWR&$'?' ' &URVV6HFWLRQV GZJ )HE SP /D\RXW 1DPH &URVV 6HFWLRQV 1RUWK ,PSRXQGPHQWV %\ UGW

LEGEND EXISTING GRADE

EMBANKMENT EXCAVATION REDUCE SLOPE STEEPNESS AND FINE GRADE (SEE DETAIL 3)

EXISTING DRAINAGE DITCH

NEW ELEVATION TOP OF SUBGRADE

EXISTING ELEVATION

SOUTH ASH IMPOUNDMENT NEW ELEVATION TOP OF ASH OR SUBGRADE

50 50

NEW ELEVATION TOP OF ASH OR SUBGRADE

NORTH ASH IMPOUNDMENT BOUNDARY

SEDIMENTATION BASIN 100

( 7580$1 5' ,1'(3(1'(1&( 0,66285,

%/8( 9$//(< 32:(5 67$7,21

EMBANKMENT EXCAVATION

$6+ ,03281'0(17 &/2685( &216758&7,21 3/$16

&5266 6(&7,216 1257+ ,03281'0(176

NORTH ASH IMPOUNDMENT BOUNDARY

NEW ELEVATION TOP OF SUBGRADE

: WK 6W 6WH 2YHUODQG 3DUN .DQVDV 3+ )$;

EXISTING ELEVATION

,1'(3(1'(1&( 32:(5 /,*+7

EXISTING ELEVATION

6&6 $48$7(55$

BOTTOM ASH IMPOUNDMENT

NOTES:

D' EMBANKMENT EXCAVATION

NORTH ASH IMPOUNDMENT

FINAL COVER EXTENDS TO LIMITS OF ASH WHERE CAP TIES INTO EXISTING CLAY EMBANKMENT.

IMPOUNDMENT BOUNDARIES ARE APPROXIMATE.

1 ?&LW\ RI ,QGHSHQGHQFH?,QGHSHQGHQFH 3RZHU /LJKW?3URMHFWV? $VK 3RQG &ORVXUH 'HVLJQ?$XWR&$'?' ' &URVV6HFWLRQV GZJ )HE SP /D\RXW 1DPH &URVV 6HFWLRQV 1RUWK ,PSRXQGPHQWV %\ UGW

LEGEND EXISTING GRADE

NEW GRADE TOP OF ASH OR SUBGRADE (BOTTOM OF FINAL COVER) EMBANKMENT EXCAVATION

EXISTING ELEVATION

H' SOUTH ASH IMPOUNDMENT NEW ELEVATION TOP OF ASH OR SUBGRADE 20

REDUCE SLOPE STEEPNESS AND FINE GRADE (SEE DETAIL 3)

SEDIMENTATION BASIN 50 50 100

: WK 6W 6WH 2YHUODQG 3DUN .DQVDV 3+ )$;

NEW ELEVATION TOP OF ASH OR SUBGRADE SOUTH ASH IMPOUNDMENT BOUNDARY

( 7580$1 5' ,1'(3(1'(1&( 0,66285,

%/8( 9$//(< 32:(5 67$7,21

$6+ ,03281'0(17 &/2685( &216758&7,21 3/$16

&5266 6(&7,216 6287+ ,03281'0(176

,1'(3(1'(1&( 32:(5 /,*+7

SOUTH ASH IMPOUNDMENT BOUNDARY

EMBANKMENT EXCAVATION

NEW ELEVATION TOP OF ASH OR SUBGRADE

6&6 $48$7(55$

EMBANKMENT EXCAVATION (BETWEEN BOTTOM ASH AND SOUTH ASH IMPOUNDMENTS)

EXISTING DRAINAGE DITCH

G EMBANKMENT EXCAVATION

REDUCE SLOPE STEEPNESS AND FINE GRADE (SEE DETAIL 3)

EXISTING DRAINAGE DITCH

NORTH ASH IMPOUNDMENT

BOTTOM ASH IMPOUNDMENT BOTTOM ASH IMPOUNDMENT BOUNDARY

EXISTING ELEVATION

FINAL COVER EXTENDS TO LIMITS OF ASH WHERE CAP TIES INTO EXISTING CLAY EMBANKMENT.

IMPOUNDMENT BOUNDARIES ARE APPROXIMATE.

NOTES:

SOUTH ASH IMPOUNDMENT BOUNDARY

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LEGEND EXISTING GRADE NEW GRADE TOP OF ASH OR SUBGRADE (BOTTOM OF FINAL COVER)

NEW GRADE SEDIMENTATION BASIN EMBANKMENT EXCAVATION

NORTH DIVIDER BERM (SEE PROFILE M-M' AND DETAIL 8)

EMBANKMENT EXCAVATION

LEGEND EXISTING GRADE

ASH IN-PLACE IMPOUNDMENT CLOSURE

EMBANKMENT EXCAVATION

NEW GRADE SEDIMENTATION BASIN

ASH IMPOUNDMENT CLEAN CLOSURE

FINAL COVER EXTENDS TO LIMITS OF ASH WHERE CAP TIES INTO EXISTING CLAY EMBANKMENT.

IMPOUNDMENT BOUNDARIES ARE APPROXIMATE.

SEDIMENTATION BASIN BOUNDARY

TOP OF NORTH DIVIDER BERM (FIELD FIT FINAL GRADE ELEVATIONS TO BE HIGHER THAN ADJACENT ASH ELEVATIONS)

NOTES:

EXISTING ELEVATION

SOUTH ASH IMPOUNDMENT BOUNDARY

ACCESS ROAD BETWEEN IMPOUNDMENTS, SEE DETAIL 6 (FIELD FIT FINAL GRADE ELEVATIONS TO BE HIGHER THAN ADJACENT ASH ELEVATIONS)

NEW ELEVATION SETTLING BASIN

EMBANKMENT EXCAVATION

NEW ELEVATION TOP OF ASH OR SUBGRADE

$6+ ,03281'0(17 &/2685( &216758&7,21 3/$16

SOUTH ASH IMPOUNDMENT

M N

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BOTTOM ASH IMPOUNDMENT

100 10

EXISTING ELEVATION

REDUCE SLOPE STEEPNESS AND FINE GRADE (SEE DETAIL 3)

6&6 $48$7(55$

SOUTH ASH IMPOUNDMENT BOUNDARY

BOTTOM ASH IMPOUNDMENT BOUNDARY

NORTH ASH IMPOUNDMENT

( 7580$1 5' ,1'(3(1'(1&( 0,66285,

SEDIMENTATION BASIN BOUNDARY

NEW ELEVATION TOP OF ASH OR SUBGRADE

EXISTING ELEVATION

SEDIMENTATION BASIN BOUNDARY

ACCESS ROAD BETWEEN IMPOUNDMENTS, SEE DETAIL 6 (FIELD FIT FINAL GRADE ELEVATIONS TO BE HIGHER THAN ADJACENT ASH ELEVATIONS)

EMBANKMENT EXCAVATION

SOUTH ASH IMPOUNDMENT BOUNDARY

NEW STORM WATER DRAINAGE CHANNEL (FIELD FIT TO DIVERT STORM WATER FROM ENTERING SEDIMENTATION BASIN)

%/8( 9$//(< 32:(5 67$7,21

NEW ELEVATION SETTLING BASIN

,1'(3(1'(1&( 32:(5 /,*+7

&5266 6(&7,216 6287+ ,03281'0(176

NEW ELEVATION TOP OF SUBGRADE

EXISTING ELEVATION

NORTH DIVIDER BERM

EXISTING ELEVATION

1 ?&LW\ RI ,QGHSHQGHQFH?,QGHSHQGHQFH 3RZHU /LJKW?3URMHFWV? $VK 3RQG &ORVXUH 'HVLJQ?$XWR&$'?' ' &URVV6HFWLRQV GZJ )HE SP /D\RXW 1DPH &URVV 6HFWLRQV 6RXWK ,PSRXQGPHQWV %\ UGW

NEW GRADE TOP OF ASH OR SUBGRADE (BOTTOM OF FINAL COVER)

SEDIMENTATION BASIN

EMBANKMENT GRADING (SEE DETAILS 3 AND 4)

SCARIFY EXISTING GRADE PRIOR TO PLACEMENT OF FINAL COVER SYSTEM

REMOVE EMBANKMENT SOIL TO DESIGNATED ELEVATION. REPLACE GRAVEL ROAD ON NEW ELEVATION AS DESIGNATED.

FINAL COVER SYSTEM (DETAIL 1, OPTION 1 )

FINAL COVER SYSTEM (DETAIL 1, OPTIONS 2 OR 3)

VEGETATION NEW GRADE AND BASE OF BARRIER LAYER NEW GRADE

ASH

18" MIN.

BARRIER SOIL LAYER K 1X10-7 CM/SEC

OPTION 1: SOIL COVER

OPTIONS 2 OR 3: GCL OR BENTONITE BACKED GEOMEMBRANE COVER

ASH

TYPICAL FINAL COVER TERMINATION AT BERM

13 13

OPTION 1: SOIL COVER

$6+ ,03281'0(17 &/2685( &216758&7,21 3/$16

TOPSOIL

3' MIN. EMBANKMENT NOTCH OUT OF EXISTING SOIL TO PLACE BARRIER LAYER

'(7$,/6 ),1$/ &29(5

6" MIN.

Not to Scale

VEGETATION

VEGETATE NEW REDUCED SLOPE TOE SLOPE GENERALLY REMAINS IN ORIGINAL LOCATION

VEGETATION

TOP OF FINAL COVER SYSTEM NEW GRADE

L PS

E LOP DS E C U 1 RED 3 TYP. ST

7-9 11-13

EXISTING SOIL EMBANKMENT

TOP OF FINAL COVER SYSTEM

ASH

TYPICAL EMBANKMENT GRADING WITH SLOPE REDUCTION

Not to Scale NOTES: 1. REDUCED SLOPE IS TO BE A MAXIMUM OF 3:1 WHERE PRACTICAL. IT IS ACCEPTABLE FOR AREAS TO HAVE A STEEPER WHERE NOT FEASIBLE TO CONSTRUCT 3:1 WITHOUT ADJUSTING THE TOE OF SLOPE.

TOPSOIL BENTONITE BACKED 30-MIL TEXTURED GEOMEMBRANE (SUCH AS GSE GUNSEAL OR EQUIVALENT)

ASH

EXISTING GRADE

OPTION 3: BENTONITE BACKED GEOMEMBRANE COVER SMOOTH OUT SLOPE AND VEGETATE NEW GRA

7-8 13,14

FINAL COVER TERMINATION AT BERM, SEE DETAIL 2

EXISTING GRADE

FINAL COVER DETAIL

TOP OF FINAL COVER SYSTEM

Not to Scale REMOVE GRAVEL FOR REUSE ON NEW ACCESS ROADS

EXISTING SOIL EMBANKMENT

TOP OF FINAL COVER SYSTEM

ASH

TYPICAL EMBANKMENT GRADING WITH SLOPE SMOOTHING Not to Scale

( 7580$1 5' ,1'(3(1'(1&( 0,66285,

EXCAVATE SOIL ABOVE NEW GRADE

OPTION 2: GCL COVER

12" MIN.

VEGETATE OR CONSTRUCT NEW ACCESS ROAD (SEE DETAIL 6) ON NEW GRADE AS APPLICABLE FINAL COVER TERMINATION AT BERM, SEE DETAIL 2

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ASH

REMOVE GRAVEL FOR REUSE ON NEW ACCESS ROADS

,1'(3(1'(1&( 32:(5 /,*+7

NEEDLE-PUNCHED REINFORCED NON-WOVEN GEOSYNTHETIC CLAY LINER (GCL)

%/8( 9$//(< 32:(5 67$7,21

TOPSOIL

12" MIN.

6&6 $48$7(55$

1 ?&LW\ RI ,QGHSHQGHQFH?,QGHSHQGHQFH 3RZHU /LJKW?3URMHFWV? $VK 3RQG &ORVXUH 'HVLJQ?$XWR&$'?' ' 'HWDLOV GZJ )HE SP /D\RXW 1DPH 'HWDLOV )LQDO &RYHU %\ UGW

ASH

18" MIN. THICKNESS RIP RAP LAYER

FINAL COVER SYSTEM (DETAIL 1, OPTION 1)

SLOPE TO DRAIN

50' MIN.

EXISTING SOIL EMBANKMENT

NEW GRADE

OPTION 1: SOIL COVER

VARIES TYP. 12' MIN. AS ROOM ALLOWS

18" MIN. THICKNESS RIP RAP LAYER 6" MIN. THICKNESS BEDDING LAYER

ASH FREE / EMBANKMENT SOIL SLOPE TO DRAIN

6-8 12-14

50' MIN.

Not to Scale

EXISTING SOIL EMBANKMENT

ASH

8 OZ/SY NON-WOVEN GEOTEXTILE

MATCH FINAL COVER SYSTEM SELECTION GCL (OPTION 2) OR BENTONITE BACKED TEXTURED GEOMEMBRANE (OPTION 3) 12" MIN.

OPTIONS 2 OR 3: GCL OR BENTONITE BACKED GEOMEMBRANE

VERIFIED CLEAN SUBGRADE

RIP RAP LINED DISCHARGE STRUCTURE

6-8 14

BARRIER SOIL LAYER K 1X10-7 CM/SEC

,1'(3(1'(1&( 32:(5 /,*+7

5' MIN. GEOTEXTILE OVERLAP PAST RIP RAP / BEDDING LAYER

TYPICAL ACCESS ROAD

SEDIMENTATION BASIN LINER SYSTEM

14 14

Not to Scale

NOTES: 1. RIP RAP AND BEDDING LAYER GRADATION IS SPECIFIED IN SPECIFICATIONS.

ASH IN-PLACE CLOSURE

CLEAN CLOSURE

TIE-IN TO EXISTING GRADE

%/8( 9$//(< 32:(5 67$7,21

FINAL COVER SYSTEM (DETAIL 1, OPTIONS 2 OR 3)

ACCESS ROAD ON TOP OF BERM (SEE DETAIL 6) FIELD ADJUST FINAL BERM HEIGHT TO BE ABOVE ADJACENT COVERED ASH ELEVATIONS

2 TYP. 2 TYP. 1

ASH

1 2 TYP. 1

CLEAN COMPACTED CLAY (MIN. 95% STANDARD PROCTOR)

SEDIMENTATION BASIN LINER SYSTEM (SEE DETAIL 7)

TEMPORARY ASH SLOPE NORTH DIVIDER BERM NOTES: 1. CONSTRUCTION OF DIVIDER BERM WILL REQUIRE REMOVAL OF ASH. 2. NEW SEDIMENTATION BASIN CLEAN COMPACTED CLAY IN CLEAN CLOSURE AREA TO BE CONSTRUCTED OF OFF SITE CLAY OR CLEAN CLAY FROM EXISTING BERMS. 3. BERM IN ASH IN PLACE CLOSURE AREA CAN BE CONSTRUCTED USING COMPACTED ASH, CLAY LINER FROM CLEAN CLOSURE AREA, CLAY FROM EMBANKMENTS, OR OFF SITE SOURCES.

APPROXIMATE ELEVATION 747'

VERIFIED CLEAN SUBGRADE

8 6,8,11

SEDIMENTATION BASIN Not to Scale

CLEAN CLOSURE AREA NOTES: 1. REMOVE ASH AND EXISTING ASH IMPOUNDMENT LINER, IF PRESENT, TO BASE OF ASH OR LINER, WHICHEVER IS LOWER. 2. IF REQUIRED, EXCAVATE NATIVE CLAYS TO NEW DESIGN GRADES. 3. NEW 12" BASIN LINER CAN BE CONSTRUCTED USING NATIVE CLAYS OR CLEAN EMBANKMENT CLAYS IF CAN ACHIEVE COMPACTION TO REQUIRED K 1X10-7 CM/SEC.

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EXISTING GRADE NO ASH PRESENT

FINAL COVER SYSTEM (SEE DETAIL 1) BACKFILLED WITH COMPACTED ASH, ASH CLAY LINER, OR CLEAN CLAY (MIN. 90% 2 TYP. STANDARD 1 PROCTOR)

$6+ ,03281'0(17 &/2685( &216758&7,21 3/$16

12" MIN.

18" MIN. BARRIER SOIL LAYER K 1X10-7 CM/SEC

( 7580$1 5' ,1'(3(1'(1&( 0,66285,

6" MIN. THICKNESS BEDDING LAYER

'(7$,/6 52$' ',6&+$5*( 6758&785( 6(77/,1* %$6,1

ASH

12" MIN. THICKNESS GRAVEL (REUSED FROM DECONSTRUCTION OF EXISTING ROADS) NON-WOVEN GEOTEXTILE FILTER FABRIC

6&6 $48$7(55$

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FINAL GRADE

DETAIL 9 AND 10 NOTES: 1. INDEPENDENCE POWER & LIGHT TO REMOVE ELECTRICAL PUMPS AND CONTROLS. 2. AFTER WATER IS REMOVED FROM BOTTOM ASH POND, VALVES AND PIPING TO BE REMOVED. 3. VALVES WILL BE RETURNED TO INDEPENDENCE POWER & LIGHT. 4. THREE PIPES FROM BOTTOM ASH POND TO BE GROUTED CLOSED. 5. CONTRACTOR TO REMOVE BUILDING AND FILL CONCRETE FOUNDATION WITH CRUSHED ROCK.

21500 E. TRUMAN RD, INDEPENDENCE, MISSOURI

BLUE VALLEY POWER STATION

INDEPENDENCE POWER & LIGHT

Not to Scale

7311 W. 130th St, Ste. 100 Overland Park, Kansas 66213 PH. (913) 681-0030 FAX. (913) 681-0012

Not to Scale

6-8 15

ASH IMPOUNDMENT CLOSURE CONSTRUCTION PLANS

DETAILS 3 - PUMP HOUSE AND PIPING 6-8 15

PUMP HOUSE PIPING DECOMMISIONING

SCS AQUATERRA

N:\City of Independence\Independence Power & Light\Projects\27215142.00 - Ash Pond Closure Design\AutoCAD\D13-D15 Details.dwg Feb 05, 2016 - 11:11am Layout Name: 15 Details 3 - Pump House and Piping By: 3789rdt

10 PUMP HOUSE DECOMMISIONING

A2: Pressure Relief System

1" Ø PVC PIPE WITH PRESSURE PORT SAND BEDDING (SEE NOTE 5)

EMBANKMENT SLOPE TRANSITION

5' MIN.

SOLID 2" Ø HDPE SDR17 PIPE

DOUBLE SIDED GEOCOMPOSITE DRAINAGE NET INSTALLED UNDER CAR GCL OR AS DIRECTED IN THE FIELD BASED ON FIELD CONDITIONS (OR SEE NOTE 2)

PLAN VIEW

BENTONITE PLUG (SEE DETAIL) SLOTTED 2" Ø HDPE SDR17 PIPE (SEE NOTE 4)

EXISTING SOIL EMBANKMENT

EXCAVATE AND TAPER EMBANKMENT TO LOWPOINT TAPERED EMBANKMENT TO LOWPOINT WHERE VALVE STEM AND PRESSURE PORT TO BE INSTALLED TOP OF PIPE 3' MIN. BELOW 18" MIN. THICKNESS GROUND SURFACE RIP RAP LAYER THROUGH EMBANKMENT

EMBANKMENT SLOPE TRANSITION

PROFILE VIEW FINAL COVER SYSTEM (DETAIL 1, OPTIONS 2 OR 3 OF CONSTRUCTION DRAWING SET)

1" Ø PVC PIPE WITH PRESSURE PORT WITH PROTECTIVE CASING 3' ABOVE GROUND SURFACE (SEE NOTE 6)

TAPER RIP RAP AND BEDDING LAYERS OUTSIDE ASH BOUNDARY

6" MIN. THICKNESS BEDDING LAYER

REMOVABLE VALVE STEM IN VALVE BOX (SEE NOTE 8)

SLOPE TO DRAIN

VALVE (SEE NOTE 7) 2" Ø HDPE SDR17 SOLID PIPE (AT 0% SLOPE OR ALLOW TO DRAIN) (SEE NOTE 3)

50' MIN.

ASH

VALVE (SEE NOTE 7) WITH REMOVABLE VALVE STEM

5' MIN. GEOTEXTILE OVERLAP PAST RIP RAP / BEDDING LAYER

HDPE FLANGE CAP

5' MIN.

EXISTING SOIL EMBANKMENT

8 OZ/SY NON-WOVEN GEOTEXTILE MATCH FINAL COVER SYSTEM SELECTION GCL (OPTION 2) OR BENTONITE BACKED TEXTURED GEOMEMBRANE (OPTION 3). GCL SHALL BE COAL ASH RESISTANT (CAR) GCL IN LOW AREAS AS PREVIOUSLY DISCUSSED

2"Ø SLOTTED HDPE SDR17 PIPE (SEE NOTE 4)

DOUBLE-SIDED GEOCOMPOSITE DRAINAGE NET OR ALTERNATE DISCUSSED IN NOTE 2 TO BE INSTALLED UNDER CAR GCL OR AS DIRECTED IN THE FIELD BASED ON FIELD CONDITIONS

DAY LIGHT PIPE ON EMBANKMENT SLOPE

BENTONITE PLUG (SEE DETAIL)

SAND BEDDING (SEE NOTE 5)

NOTES: 1. RIP RAP AND BEDDING LAYER GRADATION IS SPECIFIED IN THE TECHNICAL SPECIFICATIONS. 2.

IN LIEU OF DOUBLE SIDED GEOCOMPOSITE DRAINAGE NET, MAY USE A SAND DRAINAGE LAYER ALSO TO BE INSTALLED ON TOP OF THE ASH AND UNDER THE CAR GC OR AS DIRECTED IN THE FIELD BASED ON FIELD CONDITIONS. SAND DRAINAGE LAYER IS SHOWN BELOW: GEOTEXTILE TO FILTER ASH FROM SAND

8" SAND (SEE NOTE 5)

SOLID HDPE DRAIN PIPE TO BE TRENCHED INTO EMBANKMENT. BACKFILL WITH EMBANKMENT SOILS. PLACE BENTONITE PLUG AROUND PIPE, MINIMUM 5' LENGTH AND 12" ABOVE PIPE OR TO 3' BELOW GROUND SURFACE, WHICHEVER IS THICKER. SEE BENTONITE PLUG DETAIL TO THE LEFT.

SLOTTED PIPE IN SAND BEDDING TO BE SLOTTED WITH 0.010" SLOTS.

SAND TO BE A MEDIUM TO COARSE, WELL GRADED, WASHED SAND WITH MINIMUM 5% FINES.

THE PVC PIPE WITH PRESSURE PORT WILL BE ENCASED IN A 4"X4" PROTECTIVE STEEL CASING. THE CASING WILL BE EMBEDDED IN A CONCRETE PAD 18" Ø AND 3" DEEP. CASING WILL BE PAINTED YELLOW. LOCATED TO BE OUT OF THE WAY OF TRAFFIC AND WITH DISCUSSION WITH ENGINEER.

BENTONITE PLUG DETAIL 7. VALVE WILL BE A CLOW 2" F-6102 RESILIENT WEDGE WATER VALVE OR EQUIVALENT. BACKFILL AND COMPACT EXCAVATED SOIL THROUGH EXISTING BERM A

VALVE STEM WILL TERMINATE IN AN AT GRADE VALVE BOX EMBEDDED IN THE CONCRETE PAD OF THE STEEL CASING DISCUSSED IN NOTE 6.

SCS ENGINEERS BENTONITE TO COVER PIPE AT LEAST 12" MIN. OR TO 3' BELOW GROUND SURFACE (WHICHEVER IS THICKER)

A - A'

2" Ø SOLID HDPE PIPE

BENTONITE PLUG FILL ENTIRE WIDTH OF TRENCH

7311 W. 130th St, Ste. 100 Overland Park, Kansas 66213 PH. (913) 681-0030 FAX. (913) 681-0012

DETAIL: PRESSURE RELIEF SYSTEM FOR RIPRAP LINED DISCHARGE STRUCTURE IMPENDENCE POWER & LIGHT, BLUE VALLEY POWER STATION ASH IMPOUNDMENT CLOSURE

NOTES:

ASH IMPOUNDMENT BOUNDARIES, FENCING, EXISTING ROADS, RAILROAD TRACKS, STRUCTURES, AND UTILITIES ARE APPROXIMATE.

UTILITY LOCATIONS WILL BE VERIFIED BY CONTRACTOR PRIOR TO CONSTRUCTION.

SEE SPECIFICATIONS FOR FURTHER INFORMATION.

APPROXIMATE AREAS FOR UPLIFT CONCERN AND GCL CAR AREAS

~0.5 ACRES ± SOUTH FLY ASH IMPOUNDMENT BOUNDARY

~0.6 ACRES ± ~0.4 ACRES ±

INDEPENDENCE POWER & LIGHT

~0.5 ACRES ±

BOTTOM ASH IMPOUNDMENT BOUNDARY

THE AREAS OF CONCERN FOR UPLIFT PRESSURE ON THE FINAL COVER SYSTEM (OUTLINED ABOVE) NEED TO HAVE COAL ASH RESISTANT (CAR) GEOSYNTHETIC CLAY LINER (GCL) USED INSTEAD OF REGULAR GCL. APPROXIMATE AREAS WITH POTENTIAL UPLIFT THAT WILL REQUIRE CAR GCL TO BE USED ARE SHOWN ON THIS DRAWING. SPECIFIC AREAS ARE SUBJECT TO CHANGE BASED ON CONSTRUCTION ACTIVITIES AND BEHAVIOR OF THE ASH. AREAS SHOWN ARE APPROXIMATE . TOTAL AREA ~ 2.0 ACRES. ADDITIONALLY, IN THE AREAS WHERE THE CAR GCL IS TO BE USED, A PRESSURE RELIEF SYSTEM IS TO BE INSTALLED, PER THE PRESSURE RELIEF DETAIL SHOWN IN FIGURE 1 OF THIS SET.

100 SCALE

100

200 FEET

SUPPLEMENTAL INFORMATION FOR ASH IMPOUNDMENT CLOSURE

NEW GRAVEL ACCESS ROAD

BLUE VALLEY POWER STATION

POWER / LIGHT POLE PLANT WATER/CONTACT WATER PIPELINES COAL PILE WATER UNDERGROUND PIPING ABOVEGROUND PIPING NEW 5' CONTOUR NEW 1' CONTOUR NEW 5' STORM WATER BASIN CONTOUR NEW 1' STORM WATER BASIN CONTOUR APPROXIMATE AREAS FOR COAL ASH RESISTANT GEOSYNTEHTIC GLAY LINER (CAR GCL) AND PRESSURE RELIEF SYSTEM

TOPOGRAPHIC SURVEY FROM SHAFER, KLINE, & WARREN, INC. DATED JULY 2015.

21500 E. TRUMAN RD, INDEPENDENCE, MISSOURI

EXISTING ROAD RAILROAD TRACKS OVERHEAD ELECTRIC (APPROXIMATE)

7311 W. 130th St, Ste. 100 Overland Park, Kansas 66213 PH. (913) 681-0030 FAX. (913) 681-0012

EXISTING 5' CONTOUR EXISTING 1' CONTOUR APPROXIMATE ASH IMPOUNDMENT BOUNDARY FENCE (APPROXIMATE)

SCS AQUATERRA

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LEGEND:

Appendix B Project Timeline

Ash Impoundment Closure Activity Summary IP&L Blue Valley Power Station, Independence, Missouri Month and Year Activity

Location NFA Excavate Trenches for Dewatering and SFA Draining BA NFA Dewatering and Draining SFA BA NFA Subgrade Preparation and CCR Grading SFA BA NFA GCL Placement SFA BA NFA Cover Soil SFA BA NFA Mix Sand into Cover Soil to Create "Topsoil" SFA BA NFA Topsoil Thickness Verification SFA BA NFA Seeding SFA BA NFA Pressure Relief System SFA NFA Berm and Outlet Breeches SFA BA NFA Rip Rap at Outlets SFA BA Clean Closure BA Sedimentation Basin Construction Road regrading Side slope grading Pump House Abandonment Project Complete

7 x x x x x

Notes NFA = North Fly Ash Pond SFA = Southeast Fly Ash Pond BA = Southwest Bottom Ash Pond Activity summary timeline and informaiton is approximate

8 x x x x x x

2016 9 10 11 12 x x x x x x x x x x x x x x x x x x x x x x x x x

x x x x

x x

2017 6 7

9 10 11 12

x x

x x x x

x x x

x x

x x x

x x x x x

x x

x x x

x x

Appendix C Photographs

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 1: Excavating in north ash pond (facing east)

Figure 2: Ash movement in north ash pond (facing northeast)

Date Photos Taken: 7/8/2016 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 3: Ash movement in north ash pond (facing southeast)

Figure 4: Temporary piping from north ash pond to bottom ash pond (facing south)

Date Photos Taken: 7/8/2016 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 5: Temporary piping discharging into south ash pond

Figure 6: Looking inside Outfall 002 with discharge to LBVSD

Date Photos Taken: 7/8/2016 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 1: Excavating in north ash pond (facing east)

Figure 2: Pump on middle berm; pumping water from southeast pond to southwest pond (facing south)

Date Photos Taken: 7/14/2016 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 1: Excavators staged in the southeast fly ash pond (facing west)

Figure 2: Wet ash stockpiled to dry in the southeast pond (facing southeast)

Date Photos Taken: 8/11/2016 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 3: Pumping water from constructed sump in southeast pond (facing southeast)

Figure 4: Pumping water from the north side to south side of the southwest pond (facing northwest)

Date Photos Taken: 8/11/2016 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 5: Southwest pond standing water (facing southwest)

Figure 6: Pumping water from the southwest pond to the Little Blue Valley Sewer District Outfall (facing southwest)

Date Photos Taken: 8/11/2016 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 7: Pumping water from the southwest pond to the Little Blue Valley Sewer District Outfall (facing north)

Figure 8: Sump installed in North ash pond (facing north)

Date Photos Taken: 8/11/2016 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 9: Excavating and relocating saturated fly ash from the south end of the north pond (facing northeast)

Figure 10: Dozers grading to dry out the fly ash in the north pond (facing north)

Date Photos Taken: 8/11/2016 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 1: Pumping water from the north pond to the southwest fly ash pond (facing east)

Figure 2: Well points and water extraction system installed in the north pond (facing west)

Date Photos Taken: 9/2/2016 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 3: Griffin well pumping system in north pond with about 15 wells on each side (facing south)

Figure 4: Main vacuum engines located east of the well pumping system; pulling about 16 psi to extract water from the fly ash (facing south)

Date Photos Taken: 9/2/2016 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 5: Water discharging from the well point extraction system towards the south berm of the north pond (facing south)

Figure 6: Flow and totalizer meter installed on the outlet pipe of the extraction system

Date Photos Taken: 9/2/2016 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 7: Pumping water from the southeast to southwest pond towards the Little Blue Valley Sewer District Outfall (facing south)

Figure 8: Standing water being removed from the southeast ash pond (facing southeast)

Date Photos Taken: 9/2/2016 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 9: North side of the north pond graded and little standing water observed (facing southeast)

Figure 10: Standing water remaining in the south side of the southwest pond (facing west)

Date Photos Taken: 9/2/2016 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 1: Overlooking the southwest pond; sediment buildup near discharge to the LBVSD at Outfall #002; (facing north)

Figure 2: Standing water in southeastern edge of the southwest pond (facing north/northwest)

Date Photos Taken: 10/3/2016 Photos Taken By: Renee Trenshaw and Pat Goeke, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 3: Discharge pipe from the plan/coal yard with water exiting into southwest corner of southwest pond (facing south)

Figure 4: Minimal water in trench of southwestern area of the southwest pond (facing northeast)

Date Photos Taken: 10/3/2016 Photos Taken By: Renee Trenshaw and Pat Goeke, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 5: Overlooking northern half of the southwestern pond; standing water present (facing south)

Figure 6: Overlooking the western edge of the north ash pond (facing east)

Date Photos Taken: 10/3/2016 Photos Taken By: Renee Trenshaw and Pat Goeke, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 7: Overlooking the western edge of the north ash pond (facing north)

Figure 8: Western edge of the north ash pond, ash and embankment; subgrade preparation for GCL placement (facing north)

Date Photos Taken: 10/3/2016 Photos Taken By: Renee Trenshaw and Pat Goeke, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 9: Northern central portion of the north ash pond; some standing water visible (facing southwest)

Figure 10: Northern central portion of the north ash pond (facing south)

Date Photos Taken: 10/3/2016 Photos Taken By: Renee Trenshaw and Pat Goeke, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 11: Eastern edge of the north ash pond, bottom of trench appears soupy and some standing water (facing north)

Figure 12: Eastern edge of the north ash pond, bottom of trench appears soupy (facing south)

Date Photos Taken: 10/3/2016 Photos Taken By: Renee Trenshaw and Pat Goeke, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 13: Southeastern low point of the north ash pond; sump and pump system to remove water in low area (facing north)

Figure 14: Southeastern low point of the north ash pond; sump and pump system to remove water in low area (facing east)

Date Photos Taken: 10/3/2016 Photos Taken By: Renee Trenshaw and Pat Goeke, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 15: Trench with standing water near center of north ash pond (facing north)

Figure 16: Trench with standing water near center of north ash pond (facing west)

Date Photos Taken: 10/3/2016 Photos Taken By: Renee Trenshaw and Pat Goeke, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 17: South central low point and trench of the north ash pond; sump and pump system to remove water in low area (facing north)

Figure 18: Northwest corner of the southeast ash pond (facing south)

Date Photos Taken: 10/3/2016 Photos Taken By: Renee Trenshaw and Pat Goeke, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 19: Northwest portion of the southeast ash pond (facing east)

Figure 20: Trench located towards the northern end of western berm in southeast ash pond (facing southeast)

Date Photos Taken: 10/3/2016 Photos Taken By: Renee Trenshaw and Pat Goeke, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 21: Northwest portion of the southeast ash pond (facing southwest)

Figure 22: Standing water in northern central area of the southeast ash pond (facing southeast)

Date Photos Taken: 10/3/2016 Photos Taken By: Renee Trenshaw and Pat Goeke, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 23: Northeast portion of the southeast ash pond (facing east)

Figure 24: Southeast area of the southeast ash pond; area has standing water and appears wet and soupy (facing northwest)

Date Photos Taken: 10/3/2016 Photos Taken By: Renee Trenshaw and Pat Goeke, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 25: Overlooking the southeast ash pond; standing water in trench cutting through ash (facing north)

Figure 26: Overlooking the southwest corner of the southeast ash pond with berm between the southwest and southeast ash ponds (facing northwest)

Date Photos Taken: 10/3/2016 Photos Taken By: Renee Trenshaw and Pat Goeke, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 1: Low surface water in the southeast fly ash pond (facing south)

Figure 2: Pumping water from the north pond to the southwest pond (facing north)

Date Photos Taken: 10/14/2016 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 3: Water flowing in trench of north pond from northeast to southwest (facing east)

Figure 4: Area of the north pond graded and ready for GCL placement (facing north)

Date Photos Taken: 10/14/2016 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 5: Excavating the trenches in the northeast side of the north pond (facing south)

Figure 6: Excavating trenches to release trapped water in the northeast side of the north pond (facing northwest)

Date Photos Taken: 10/14/2016 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 7: Water flowing from the northeast to be pumped out towards the southwest pond (facing west)

Figure 8: Sediment excavated from the holding area next to the Little Blue Valley Sewer District Outfall (facing southwest)

Date Photos Taken: 10/14/2016 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 1: 10-27-16 Deploying GCL panels along the west side of the north pond (facing north)

Figure 2: 10-27-16 Bentonite powder placed along the edges before overlapped (facing east)

Date Photos Taken: 10/25/2016-10/28/2016 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 3: 10-27-16 GCL panels placed along the west side over the graded fly ash in north pond (facing south)

Figure 4: 10-27-16 Haul trucks dumping soil over the GCL panels (facing north)

Date Photos Taken: 10/25/2016-10/28/2016 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 5: 10-27-16 Dozer placing soil 1 foot thick over the GCL panels in the north fly ash pond (facing southeast)

Figure 6: 10-27-16 Large trench excavated in the central/west side of the southeast pond to help dewater the fly ash(facing east)

Date Photos Taken: 10/25/2016-10/28/2016 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 7: 10-27-16 More sediment excavated out of the holding area near the Blue Valley Sewer Outfall (facing west)

Figure 8: 10-27-16 GCL deployed farther to the north and placing soil over panels; north ash pond (facing southwest)

Date Photos Taken: 10/25/2016-10/28/2016 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 9: 10-27-16 Deploying more GCL panels to the east of what was placed on 10/25/16 in north ash pond (facing north)

Figure 10: 10-27-16 Dozer placing soil 1-foot thick soil over the deployed GCL panels to the east; north ash pond (facing north)

Date Photos Taken: 10/25/2016-10/28/2016 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 11: 10-27-16 The edge of the GCL was rolled up and covered in with plastic to protect from the weather; north ash pond (facing northeast)

Figure 12: 10-28-16 GCL panels completely covered with 1-foot of soil in the north fly ash pond (facing south)

Date Photos Taken: 10/25/2016-10/28/2016 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 13: 10-28-16 Dozer placing soil to the east edge of the GCL; north fly ash pond (facing southeast)

Figure 14: 10-28-16 Dried out fly ash along the south side of the north fly ash pond near edge of GCL placement (facing southeast)

Date Photos Taken: 10/25/2016-10/28/2016 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 1: Discharging water to the LBVSD outfall. Sediment removed earlier in the week (facing west)

Figure 2: Trench excavated in the middle of the southeast fly ash pond to help dewater fly ash (facing east)

Date Photos Taken: 11/4/2016 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 3: Southwest pond where water is being pumped from the southeast pond (facing south)

Figure 4: Haul truck driving across the soil cover on the GCL to move fly ash (facing south)

Date Photos Taken: 11/4/2016 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 5: Fly ash being graded out and fly ash stockpile being moved in the north fly ash pond (facing southeast)

Figure 6: Continuing to excavate saturated fly ash from the northeast side of the north fly ash pond (facing south)

Date Photos Taken: 11/4/2016 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 7: Fly ash being relocated to the southwest side of the north pond to be graded (facing west)

Figure 8: Excavated trench to release trapped water in the southeast fly ash pond (facing west)

Date Photos Taken: 11/4/2016 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 9: Southeast fly ash pond graded out on the south half (facing northwest)

Figure 10: Pumping standing water from the southwest pond to temporary sedimentation basin prior to discharge to the LBVSD outfall (facing northwest)

Date Photos Taken: 11/4/2016 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 1: Installing new panels of GCL on the north side of the north pond (facing south)

Figure 2: Placing bentonite powder along the long ends of the panels under the overlap (facing south)

Date Photos Taken: 12/1/2016 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 3: Dozer placing soil hauled from the borrow area over the GCL panels (facing southwest)

Figure 4: Ends of the GCL rolled over and covered with plastic to protect from weather (facing south)

Date Photos Taken: 12/1/2016 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 5: Dozer placing soil over the GCL panels installed in the morning (facing southeast)

Figure 6: Excavating the saturated fly ash from the south side of the southwest fly ash pond down to the clay liner (facing west)

Date Photos Taken: 12/1/2016 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 1: Overview of the southwest sediment pond (facing northwest)

Figure 2: Pumping water from the south sediment pond into the basin for the LBVSD Outfall (facing west)

Date Photos Taken: 1/12/2017 Photos Taken By: Whit Martin and Pat Goeke, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 3: Excavating fly ash from the south half of the sediment pond (facing west)

Figure 4: Clay soils encountered in test pit 2 in the northeast quadrant (facing northeast) Date Photos Taken: 1/12/2017 Photos Taken By: Whit Martin and Pat Goeke, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 5: Clay soils encountered in test pit 4 in the northwest quadrant (facing north)

Figure 6: Excavating test pits to about 18 inches to get background soil samples (facing north)

Date Photos Taken: 1/12/2017 Photos Taken By: Whit Martin and Pat Goeke, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 7: Clay soil encountered for the background sample (facing east)

TP-4 TP-3

TP-1

TP-2

Figure 8: Overview of test pits in the southwest sediment pond (facing west)

Date Photos Taken: 1/12/2017 Photos Taken By: Whit Martin and Pat Goeke, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 9: Southwest ash pond water pumped down (facing southwest)

Figure 10: East berm graded down on the north fly ash pond (facing north)

Date Photos Taken: 1/12/2017 Photos Taken By: Whit Martin and Pat Goeke, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 1: Overview of the sediment pond (facing northwest)

Figure 2: Southeast corner of sedimentation pond (facing east)

Date Photos Taken: 02/06/2017 Photos Taken By: Pat Goeke, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 3: TP-5, located in southwest corner of sedimentation pond. Looking at north wall. Date Photos Taken: 02/06/2017 Photos Taken By: Pat Goeke, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 4: Possible waste soil on top of native brown and gray mottle clay soil encountered in TP-6 in the northwest quadrant (north wall)

Date Photos Taken: 02/06/2017 Photos Taken By: Pat Goeke, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 5: Gray clay soils overlying brown and gray clay in TP-7. Date Photos Taken: 02/06/2017 Photos Taken By: Pat Goeke, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 1: Placing BentoLiner GCL panels on the northeast fly ash pond (facing northeast)

Figure 2: Dozer placing cover soil over the GCL panels in the north pond (facing northeast)

Date Photos Taken: 02/13/2017 through 02/17/2017 Photos Taken By: Whit Martin, SCS Engineers 1

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 3: Extent of fly ash graded out on the northeast side of the north pond (facing south)

Figure 4: Fly ash graded out on the north pond (facing west)

Date Photos Taken: 02/13/2017 through 02/17/2017 Photos Taken By: Whit Martin, SCS Engineers 2

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 5: Offsite northwest borrow area where haul trucks are getting clay from (facing south)

Figure 6: South area of the north fly ash pond still needing to be filled in and graded (facing west)

Date Photos Taken: 02/13/2017 through 02/17/2017 Photos Taken By: Whit Martin, SCS Engineers 3

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 7: Water being pumped from the southeast fly ash pond into the southwest sediment pond (facing northeast)

Figure 7: Water being pumped from the southeast fly ash pond to the southwest temporary sediment pond (facing east)

Figure 8: Large berm (northern half only of final berm) installed in the middle of the southwest sediment pond (facing northwest)

Date Photos Taken: 02/13/2017 through 02/17/2017 Photos Taken By: Whit Martin, SCS Engineers 4

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 9: Deploying GCL rolls on the middle of the north fly ash pond (facing west)

Figure 10: Dozer placing clay to a minimum of 1 foot thickness over the GCL panels (facing south)

Date Photos Taken: 02/13/2017 through 02/17/2017 Photos Taken By: Whit Martin, SCS Engineers 5

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 11: Placing bentonite powder between the long ends of the GCL panels (facing south)

Figure 12: GCL panels placed on the north end of the north fly ash pond (facing southwest)

Date Photos Taken: 02/13/2017 through 02/17/2017 Photos Taken By: Whit Martin, SCS Engineers 6

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 13: Deploying GCL rolls on the middle-east side of the north fly ash pond (facing south)

Date Photos Taken: 02/13/2017 through 02/17/2017 Photos Taken By: Whit Martin, SCS Engineers 7

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 1: Overview of bottom sedimentation pond before clay liner installation (facing east)

Figure 2: Excavating impacted soils from the southeast corner of the sedimentation pond (facing south)

Date Photos Taken: 2/24/2017, 2/28/2017, and 3/1/2017 Photos Taken By: Whit Martin, SCS Engineers 1

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 3: Impacted soils hauled to the north side of the north of the sedimentation pond berm in the bottom ash pond (facing northwest)

Figure 4: Dozer pushing clean brown clay to fill in excavated east area (facing southwest)

Date Photos Taken: 2/24/2017, 2/28/2017, and 3/1/2017 Photos Taken By: Whit Martin, SCS Engineers 2

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 5: Placing clay to fill in the east trench of the north fly ash pond (facing north)

Figure 6: Hauling clay from the offsite borrow property to place compacted clay liner in bottom of sedimentation pond (facing northwest)

Date Photos Taken: 2/24/2017, 2/28/2017, and 3/1/2017 Photos Taken By: Whit Martin, SCS Engineers 3

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 7: Compacting the clay liner lifts with a CAT 815B sheepsfoot compactor (facing southeast)

Figure 8: Krueger Technologies Inc. personnel running compaction tests on the clay liner (facing northeast)

Date Photos Taken: 2/24/2017, 2/28/2017, and 3/1/2017 Photos Taken By: Whit Martin, SCS Engineers 4

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 9: Excavating impacted soil from the southwest slope of the sedimentation pond (facing north)

Figure 10: Southeast corner of the sedimentation pond where the Blue Valley Sewer District outfall is located (facing east)

Date Photos Taken: 2/24/2017, 2/28/2017, and 3/1/2017 Photos Taken By: Whit Martin, SCS Engineers 5

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 11: Dozer placing a lift of clay liner on the west slope of the sedimentation pond (facing southwest)

Figure 12: Hauling clay from the offsite borrow property to build the south side of the north berm in the sedimentation pond (facing southwest)

Date Photos Taken: 2/24/2017, 2/28/2017, and 3/1/2017 Photos Taken By: Whit Martin, SCS Engineers 6

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 13: Dozer placing the clay in lifts and compacting using a CAT 815B Sheepsfoot compactor for the south half of the north divider berm (facing east)

Figure 14: Overview of the clay liner on the bottom of the sedimentation pond (facing west)

Date Photos Taken: 2/24/2017, 2/28/2017, and 3/1/2017 Photos Taken By: Whit Martin, SCS Engineers 7

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 15: Overview of the construction of the south half of the north soil berm in the sedimentation pond (facing northwest)

Date Photos Taken: 2/24/2017, 2/28/2017, and 3/1/2017 Photos Taken By: Whit Martin, SCS Engineers 8

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 1: GCL panels deployed in eastern portion of north fly ash pond (facing southeast)

Figure 2: GCL panels placed in north fly ash pond with dozer spreading soil cover onto panels (facing north)

Date Photos Taken: 3/15/2017 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 3: Haul truck dumping cover soil for dozer to spread over panels (facing west)

Figure 4: Deploying GCL panels in northeastern portion of north fly ash pond (facing south)

Date Photos Taken: 3/15/2017 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 5: Northeast corner of north fly ash pond with GCL cover soil placed (facing west)

Figure 6: Deployed GCL panels in phases of bentonite seaming progress (facing south)

Date Photos Taken: 3/15/2017 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 7: Cover soil on GCL panels prepped to spread (facing north)

Figure 8: Southwest corner of the north fly ash pond, where ash grading and stabilization is ongoing (facing east)

Date Photos Taken: 3/15/2017 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 1: GCL panels deployed in southwestern portion of north fly ash pond (facing southeast)

Figure 2: Bentonite seal between GCL overlaps.

Date Photos Taken: 3/23/2017 Photos Taken By: Bryan Ross, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 3: Dozer placing 1 foot minimum clay over GCL (facing north)

Figure 4: Dozer and tractor with belly scraper placing clay over GCL (facing east)

Date Photos Taken: 3/23/2017 Photos Taken By: Bryan Ross, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 5: Deploying additional GCL in North Pond and placing bentonite between panel overlaps (facing east)

Date Photos Taken: 3/23/2017 Photos Taken By: Bryan Ross, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 1: Overlooking the standing water accumulating in the north pond (facing east)

Figure 2: Overview of the south side of the north fly ash pond (facing east)

Date Photos Taken: 4/3/2017 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 3: Temporary soil and rock berms put in place to prevent ash/silt run-off (facing east)

Figure 4: Silt fencing in-place on the south side of the north fly ash pond (facing northwest)

Date Photos Taken: 4/3/2017 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 5: Soil and rock berms installed in the southeast corner of the north ash pond (facing northeast)

Figure 6: Southwest bottom ash pond with accumulated standing water (facing south)

Date Photos Taken: 4/3/2017 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 1: GCL panels being deployed in southwest corner of north fly ash pond (facing northwest)

Figure 2: Granular bentonite placement between GCL overlap

Dates Photos Taken: 4/11/2017 and 4/12/2017 Photos Taken By: Bryan Ross, SCS Engineers 1

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 3: GCL deployed in the southwest corner of the north ash pond and Dozer placing 1 foot minimum soil over GCL (facing northwest)

Figure 4: Repaired storm water berm and silt fencing (facing north)

Dates Photos Taken: 4/11/2017 and 4/12/2017 Photos Taken By: Bryan Ross, SCS Engineers 2

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 5: Deploying additional GCL in North Pond up to the boundary of the CAR GCL (facing northeast)

Figure 6: Granular bentonite placed between GCL panel overlap.

Dates Photos Taken: 4/11/2017 and 4/12/2017 Photos Taken By: Bryan Ross, SCS Engineers 3

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 7: Discharge pipe and manhole near the northeast corner of the sedimentation basin. (facing west – 4/11/2017)

Figure 8: Backfilled around manhole of sedimentation basin discharge pipe. (facing south – 4/12/2017)

Dates Photos Taken: 4/11/2017 and 4/12/2017 Photos Taken By: Bryan Ross, SCS Engineers 4

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 1: Excavation of pressure relief pipe trench in the North Pond south discharge area. (facing east)

Figure 2: Slotted SDR 11 HDPE pipe installed on top of sand bedding in the North Pond south discharge area trench. (facing east)

Dates Photos Taken: 4/14/2017 and 4/18/2017 Photos Taken By: Bryan Ross, SCS Engineers 1

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 3: Slotted SDR 11 HDPE pipe.

Figure 4: Installing solid HDPE SDR pipe through the North Pond south berm. (facing south)

Dates Photos Taken: 4/14/2017 and 4/18/2017 Photos Taken By: Bryan Ross, SCS Engineers 2

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 5: Bentonite plug at solid pipe transition. (facing south)

Figure 6: Valve located on solid pipe located near where the pipe daylights through the embankment 1” pressure release port located before valve. (facing north)

Dates Photos Taken: 4/14/2017 and 4/18/2017 Photos Taken By: Bryan Ross, SCS Engineers 3

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 7: Flange location of solid pipe. (facing north)

Figure 8: Excavation of the North Pond’s southeast discharge area pressure relief pipe trench. (facing northeast)

Dates Photos Taken: 4/14/2017 and 4/18/2017 Photos Taken By: Bryan Ross, SCS Engineers 4

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 9: Placement of sand bedding in the North Pond’s southeast discharge area pressure relief system pipe trench. (facing south)

Figure 10: North Pond’s southeast discharge area, solid pipe trench extending through the east embankment. Fusion welding elbow to connect solid pipe to slotted pipe. (facing north)

Dates Photos Taken: 4/14/2017 and 4/18/2017 Photos Taken By: Bryan Ross, SCS Engineers 5

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 11: Placement of sand bedding over the top of the slotted pipe. (facing northeast)

Figure 12: Slotted pipe trench backfilled with sand. (facing northeast)

Dates Photos Taken: 4/14/2017 and 4/18/2017 Photos Taken By: Bryan Ross, SCS Engineers 6

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 13: Placement of bentonite plug near solid pipe transition. (facing east)

Figure 14: Solid pipe daylight location with valve and flange cap. (facing west)

Dates Photos Taken: 4/14/2017 and 4/18/2017 Photos Taken By: Bryan Ross, SCS Engineers 7

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 15: Cracking of clay on the west berm of the sedimentation basin. (facing north – 4/14/2017)

Figure 16: View of south berm of the sedimentation basin. (facing southwest – 4/18/2017)

Dates Photos Taken: 4/14/2017 and 4/18/2017 Photos Taken By: Bryan Ross, SCS Engineers 8

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 17: View of the south berm of the sedimentation basin. (facing west – 4/18/2017)

Dates Photos Taken: 4/14/2017 and 4/18/2017 Photos Taken By: Bryan Ross, SCS Engineers 9

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 1: Deploying geocomposite over the North Pond’s south pressure relief drainage area. (facing southeast)

Figure 2: Zip tied geonet on geocomposite panels and granular bentonite on overlap of CAR GCL overlap. (East)

Dates Photos Taken: 4/19/2017 and 4/20/2017 Photos Taken By: Bryan Ross, SCS Engineers 1

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 3: Deployment of CAR GCL over geocomposite. (facing northeast)

Figure 4: Placement of soil over top of CAR GCL and geocomposite in south discharge area. (facing west)

Dates Photos Taken: 4/19/2017 and 4/20/2017 Photos Taken By: Bryan Ross, SCS Engineers 2

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 5: Deploying CAR GCL over the north edge of the geocomposite. (facing south)

Figure 6: Deploying regular GCL to the west of the southeast discharge area (facing south).

Dates Photos Taken: 4/19/2017 and 4/20/2017 Photos Taken By: Bryan Ross, SCS Engineers 3

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 7: Granular bentonite placed between overlaps of GCL. (facing south)

Figure 8: Placement of soil over GCL panels (facing northwest).

Dates Photos Taken: 4/19/2017 and 4/20/2017 Photos Taken By: Bryan Ross, SCS Engineers 4

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 1: 6-19-17 GCL panels being deployed in the northeast corner of southeast fly ash pond (facing east)

Figure 2: 6-19-17 Erosion from surface rain water on the south slope of the north fly ash pond (facing north)

Dates Photos Taken: 6/19/2017, 6/22/2017, and 6/23/2017 Photos Taken By: Whit Martin, SCS Engineers 1

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 3: 6-19-17 Haul trucks began bringing soil to build the ramp into the southeast fly ash pond (facing north)

Figure 4: 6-19-17 Overview of the southeast fly ash pond graded out and ready for GCL covering (facing southwest)

Dates Photos Taken: 6/19/2017, 6/22/2017, and 6/23/2017 Photos Taken By: Whit Martin, SCS Engineers 2

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 5: 6-19-17 A D6 dozer pushing soil out over the GCL to build the ramp into the pond (facing east)

Figure 6: 6-22-17 A D6 dozer placing the soil over the deployed regular GCL (facing south)

Dates Photos Taken: 6/19/2017, 6/22/2017, and 6/23/2017 Photos Taken By: Whit Martin, SCS Engineers 3

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 7: 6-22-17 Panels of regular GCL deployed in the northeast corner of the southeast fly ash pond (facing southeast )

Figure 8: 6-22-17 Pumping water from the southwest fly ash pond to the sediment pond (facing south)

Dates Photos Taken: 6/19/2017, 6/22/2017, and 6/23/2017 Photos Taken By: Whit Martin, SCS Engineers 4

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 9: 6-22-17 South slope of the north pond regraded to fix the washed out areas (facing east)

Figure 10: 6-22-17 Soil was placed up to grade at a foot thick and the same elevation as the access road on the east side of the southeast pond (facing north)

Dates Photos Taken: 6/19/2017, 6/22/2017, and 6/23/2017 Photos Taken By: Whit Martin, SCS Engineers 5

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 11: 6-23-17 Radmacher personnel deploying regular GCL panels on the middle section of the southeast fly ash pond (facing south)

Figure 12: 6-23-17 Placing bentonite powder between the overlapped sections of the GCL panels (facing southwest)

Dates Photos Taken: 6/19/2017, 6/22/2017, and 6/23/2017 Photos Taken By: Whit Martin, SCS Engineers 6

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 13: 6-23-17 Haul trucks dumping soil from the borrow source and a D6 dozer placing soil 1 foot thick over the GCL panels (facing north)

Dates Photos Taken: 6/19/2017, 6/22/2017, and 6/23/2017 Photos Taken By: Whit Martin, SCS Engineers 7

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 1: GCL installed in the southeast corner of the North pond (facing southeast)

Figure 2: Overview of the southeast side of the north fly ash pond (facing southeast)

Date Photos Taken: 7/6/2017 Photos Taken By: Ryan Salliotte, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 3: Cover soil placed over the GCL that was installed in the morning (facing northwest)

Figure 5: Dozer placing nearby soil over the GCL liner in the North fly ash pond (facing north)

Date Photos Taken: 7/6/2017 Photos Taken By: Ryan Salliotte, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 6: Southeast corner of the north pond with vegetation removed and ready for drainage GCL and Geocomposite. (facing east)

Date Photos Taken: 7/6/2017 Photos Taken By: Ryan Salliotte, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 1: Zip-tying Geonet panels of the Geocomposite together about every foot in the southeast corner of the North pond (facing west)

Figure 2: Sewing the Geotextile ends together using a sewing gun in southeast drainage area of the north pond (facing southeast)

Date Photos Taken: 7/7/2017 Photos Taken By: Brian Dinges, Radmacher Construction

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 3: Geotextile panels completely sewn together for the Geocomposite drainage layer (facing northwest)

Figure 4: Deploying CAR GCL liner over the Geocomposite panels in the North fly ash pond (facing northwest) Date Photos Taken: 7/7/2017 Photos Taken By: Brian Dinges, Radmacher Construction

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 5: Deploying Geotextile panels over the CAR GCL placing in the drainage area of the North fly ash pond (facing northeast)

Figure 6: Sewing together the Geotextile panels placed over the CAR GCL in the drainage area of the North fly ash pond (facing northeast)

Date Photos Taken: 7/7/2017 Photos Taken By: Brian Dinges, Radmacher Construction

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 1: The northeast side of the southeast fly ash pond covered with a foot of soil (facing northwest)

Figure 2: Deploying regular GCL panels on the northwest side of the southeast pond (facing northwest)

Date Photos Taken: 7/11/2017 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 3: Haul trucks deposited soil from the borrow area as a D6 dozer placed it in 1 foot minimum thickness (facing northeast)

Figure 4: Deploying regular GCL and placing granular bentonite along each panel overlap in the southeast fly ash pond (facing north)

Date Photos Taken: 7/11/2017 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 5: North drainage area of the southwest fly ash pond (facing south)

Figure 6: Outer building shell removed from the pump valve house (facing northwest)

Date Photos Taken: 7/11/2017 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 7: Drainage rip-rap rock placed over the Geocomposite and CAR GCL layers in the north fly ash pond (facing north)

Figure 8: Close-up view of the rip-rap rock placed in the southeast drainage area of the north fly ash pond (facing southeast)

Date Photos Taken: 7/11/2017 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 9: Placing regular GCL in the middle of the southeast fly ash pond (facing southwest)

Figure 10: D6 dozer placing soil from the borrow area over the GCL panels (facing north)

Date Photos Taken: 7/11/2017 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 1: 7/17/2017 Deploying regular GCL panels in the southeast corner of the southeast fly ash pond (facing northeast)

Figure 2: 7/17/2017 A D6 dozer placing soil from the borrow area over the GCL placed in the southeast corner of the southeast pond (facing northwest)

Date Photos Taken: 7/17/2017 and 7/19/2017 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 3: 7/17/2017 Soil had been placed completely over the GCL on the north half of the southeast fly ash pond (facing northwest)

Figure 4: 7/17/2017 Regular GCL panels placed over the mounded area of the southeast fly ash pond (facing east)

Date Photos Taken: 7/17/2017 and 7/19/2017 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 5: 7/17/2017 The D6 dozer placed soil 1 foot minimum to completely cover the GCL panels deployed in the morning (facing east)

Figure 6: 7/19/2017 Soil completely covering the mounded area of the southeast fly ash pond (facing west)

Date Photos Taken: 7/17/2017 and 7/19/2017 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 7: 7/19/2017 A D6 dozer placing soil from the borrow area to cover the regular GCL panels placed in the morning in the southeast fly ash pond (facing southeast)

Figure 8: 7/19/2017 Overview of the standing water in the northwest corner of the southeast fly ash pond (facing southwest)

Date Photos Taken: 7/17/2017 and 7/19/2017 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 9: 7/19/2017 Overview of the soil covering the GCL placed in the southeast corner of the southeast fly ash pond (facing northeast)

Date Photos Taken: 7/17/2017 and 7/19/2017 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 1: Placing sand over clay in the north fly ash pond with John Deere tractor and scraper.

Figure 2: Using a spring tooth harrow on tractor to mix in the sand with clay across the north fly ash pond.

Date Photos Taken: 8/14/2017 Photos Taken By: Bryan Ross, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 1: Collection pipe trench located on the southeast discharge location of the SEFAP (facing north)

Figure 2: Solid pipe discharge trench located on the north end of the southeast discharge location of the SEFAP. (facing east)

Date Photos Taken: 9/7/2017 Photos Taken By: Bryan Ross, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 3: Solid discharge pipe extending through the east berm of the SEFAP. Discharge and pressure relief valves are installed. (facing west)

Figure 4: Bentonite plug around solid discharge pipe of the southeast discharge location. (facing east)

Date Photos Taken: 9/7/2017 Photos Taken By: Bryan Ross, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 5: Radmacher placing sand over the slotted pipe in the southeast discharge location trench. (facing south)

Figure 6: Placing sand pipe bedding in the north discharge location pipe trench of the SEFAP. (facing east)

Date Photos Taken: 9/7/2017 Photos Taken By: Bryan Ross, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 7: Solid discharge pipe trench through the north berm. (facing north)

Figure 8: Bentonite plug around the solid discharge pipe. (facing southeast)

Date Photos Taken: 9/7/2017 Photos Taken By: Bryan Ross, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 9: North collection trench backfilled with sand. (facing west)

Figure 10: Solid discharge pipe with valves installed extending through the north berm (facing south)

Date Photos Taken: 9/7/2017 Photos Taken By: Bryan Ross, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 1: Measuring mixed topsoil on the north fly ash pond.

Figure 2: Measuring mixed topsoil and clay on the north fly ash pond.

Date Photos Taken: 9/8/2017 Photos Taken By: Bryan Ross, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 1: 9/11/2017 Deploying geocomposite over pipe trench of the southeast discharge location of the SEFAP (facing east)

Figure 2: 9/11/2017 Zip tying geocomposite panels together. (facing southwest)

Date Photos Taken: 9/11/2017 through 9/14/2017 Photos Taken By: Bryan Ross and Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 3: 9/11/2017 Sewing geocomposite panels together. (facing north)

Figure 4: 9/11/2017 Deploying CAR GCL over gecomposite in southeast discharge location. (facing south)

Date Photos Taken: 9/11/2017 through 9/14/2017 Photos Taken By: Bryan Ross and Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 5: 9/11/2017 Placing bentonite between the GCL overlaps.

Figure 6: 9/11/2017 Deploying geotextile over CAR GCL. (facing south)

Date Photos Taken: 9/11/2017 through 9/14/2017 Photos Taken By: Bryan Ross and Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 7: 9/11/2017 Sewing geotextile panels together. (facing west)

Figure 8: 9/12/2017 Placement of rip-rap over bedding on the southeast discharge location. (facing north)

Date Photos Taken: 9/11/2017 through 9/14/2017 Photos Taken By: Bryan Ross and Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 9: 9/12/2017 View of southeast discharge location of the SEFAP. (facing northeast)

Figure 10: 9/12/2017 Pressure Relief System valves risers. (facing east)

Date Photos Taken: 9/11/2017 through 9/14/2017 Photos Taken By: Bryan Ross and Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 11: 9/13/2017 Deploying geocomposite over north discharge location of the SEFAP. (facing west)

Figure 12: 9/13/2017 Geocomposite panels zip tied together.

Date Photos Taken: 9/11/2017 through 9/14/2017 Photos Taken By: Bryan Ross and Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 13: 9/13/2017 Sewing geocomposite panels together. (facing west)

Figure 14: 9/13/2017 Deploying CAR GCL over the geocomposite. (facing west)

Date Photos Taken: 9/11/2017 through 9/14/2017 Photos Taken By: Bryan Ross and Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 15: 9/13/2017 Bentonite placed on overlaps of CAR GCL.

Figure 16: 9/14/2017 Lowering of east road along the southeast discharge location of the SEFAP. (facing northwest)

Date Photos Taken: 9/11/2017 through 9/14/2017 Photos Taken By: Bryan Ross and Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 17: 9/14/2017 View of the southeast discharge location with rip-rap. (facing north)

Figure 18: 9/14/2017 Placement of bedding material over geotextile of the north discharge location. (facing south)

Date Photos Taken: 9/11/2017 through 9/14/2017 Photos Taken By: Bryan Ross and Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 19: 9/14/2017 Pine Valley using tractor with spring tooth harrow and chain harrow rake to mix in fertilizer with topsoil in preparation of seeding. (facing north)

Figure 20: 9/14/2017 Spring tooth harrow and chain harrow rake used to mix in fertilizer and prep the topsoil for the seed. (facing north)

Date Photos Taken: 9/11/2017 through 9/14/2017 Photos Taken By: Bryan Ross and Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 21: 9/14/2017 Dry fertilizer applied to the surface of the topsoil across the NFAP.

Figure 22: 9/14/2017 Seed temporary staged for seeding of the NFAP. (facing west)

Date Photos Taken: 9/11/2017 through 9/14/2017 Photos Taken By: Bryan Ross and Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 22: 9/14/2017 Seed bag label.

Date Photos Taken: 9/11/2017 through 9/14/2017 Photos Taken By: Bryan Ross and Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 1: Using a spring tooth harrow on tractor to mix in the sand with clay in the southeast fly ash pond.

Figure 2: Scraper placing sand and soil being mixed through in the southeast fly ash pond.

Date Photos Taken: 9/18/2017 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 3: North fly ash pond completely covered with hay after seeding and fertilizing was completed.

Date Photos Taken: 9/18/2017 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 1: The seeding and fertilizer covered with hay over the topsoil on the north fly ash pond.

Figure 2: Coal-ash resistant GCL material and rip-rap rock placed on the southeast fly ash pond. Date Photos Taken: 9/21/2017 Photos Taken By: Bryan Ross, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 3: Rip-rap rock placed along the east access road of the southeast fly ash pond.

Figure 4: Pressure relief pipe end installed on south discharge of NFAP. Date Photos Taken: 9/21/2017 Photos Taken By: Bryan Ross, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 1: BentoLiner GCL installed on the south end of the bottom southwest fly ash pond.

Figure 2: Dozer pushing a minimum of 1 foot of soil over the GCL panels on the southwest fly ash pond. Date Photos Taken: 9/25/2017 Photos Taken By: Bryan Ross, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 3: The west slope of the sediment pond was regraded by a dozer after the intercept trench was completed.

Figure 4: The south slope of the sediment pond was regraded by a dozer after the intercept trench was completed. Date Photos Taken: 9/25/2017 Photos Taken By: Bryan Ross, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 5: The southeast fly ash pond with tilled in topsoil mix prior to final discing.

Figure 6: Topsoil mixed in with the clay on the south end of the southeast fly ash pond.

Date Photos Taken: 9/25/2017 Photos Taken By: Bryan Ross, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 1: Radmacher installing BentoLiner GCL panels in the middle of the bottom southwest fly ash pond.

Figure 2: Radmacher installing GCL panels around the power poles in southwest fly ash pond.

Date Photos Taken: 9/29/2017 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 3: Haul trucks depositing clay and the dozer placing it a minimum of 1 foot thick over the GCL panels placed.

Date Photos Taken: 9/29/2017 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 1: Haul trucks bringing in clay and dozer placing soil a minimum of 1 foot in the bottom southwest fly ash pond over installed GCL panels.

Figure 2: Radmacher personnel installing bentonite powder between the GCL panels in the north end of the southwest fly ash pond. Date Photos Taken: 10/2/2017 Photos Taken By: Bryan Ross, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 3: The east edge of the bottom southwest fly ash pond with GCL panels placed.

Figure 4: Soil was placed over the GCL installed in the northwest corner of the southeast fly ash pond and around the rip-rap rock. Date Photos Taken: 10/2/2017 Photos Taken By: Bryan Ross, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 1: The bottom southwest fly ash pond with 1 foot of clay covering the installed GCL panels.

Figure 2: Clay was placed over the GCL panels up to the rip-rap rock in the northwest corner of the southeast fly ash pond.

Date Photos Taken: 10/10/2017 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 3: Grass beginning to grow in the north fly ash pond topsoil.

Figure 4: Grass beginning to grow in the north fly ash pond topsoil.

Date Photos Taken: 10/10/2017 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 1: Overview of grass growing in north fly ash pond.

Figure 2: Gravel was placed over the drainage area where the pump house was previously located to help filter out suspended solids during rain events.

Date Photos Taken: 11/2/2017 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 3: Overview of the south fly ash ponds with topsoil placement completed and mixed in with clay layer.

Figure 4: One of the test pot holes to verify a minimum of one foot of topsoil.

Date Photos Taken: 11/2/2017 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 5: Gravel was placed around the base of the power poles in both the bottom ash and southeast fly ash ponds.

Figure 6: Verifying a minimum of one foot of topsoil mixed in with the clay at one of the test pot hole locations.

Date Photos Taken: 11/2/2017 Photos Taken By: Whit Martin, SCS Engineers

IPL Blue Valley Power Station Ash Impoundment Closure

Figure 7: Verifying clay layer thickness and a minimum of one foot of topsoil mixed in with the clay layer at one of the test pot hole locations.

Figure 8: Verifying the clay layer thickness and one foot minimum of topsoil mixed in with the clay layer at one of the test pot hole locations in the southeast fly ash pond.

Date Photos Taken: 11/2/2017 Photos Taken By: Whit Martin, SCS Engineers

Appendix D Geosynthetic Clay Liner (GCL) D1: Material Inventories D2: GCL Manufacturer’s Certifications D3: CAR GCL Manufacturer’s Certifications D4: Panel Map

D1: Material Inventories

MATERIAL INVENTORY RECORD Client Name: Project Location:

Material Type:

SCS Engineers CQA Technician: Whit Martin, Bryan Ross

Independence Power & Light Blue Valley Power Station 21500 E Truman Rd, Independence, Missouri

SCS Engineers Project Name: SCS Engineers Project Number:

IPL BVPS Ash Impoundment Closure 27215142.00

GCL - GSE Bentoliner BLI-0750-06N-03S-D-00

Roll No.

Daily Lot

Width (ft)

Roll Size Length (ft)

Area (sq. ft)

QC Docs Received

Date Used

Remarks

502278514 502278515 502278516 502278517 502278518 502278519 502278520 502278521 502278522 502278523 502278524 502278525 502278526 502278527 502278528 502278529 502278530 502278531 502278532 502278533 502278534 502278535 502278536 502278537 502278538 502278539 502278540 502278541 502278542 502278543 502278544 502278545 502278546

26091503 26091503 26091503 26091503 26091503 26091503 26091503 26091503 26091503 26091503 26091503 26091503 26091503 26091503 26091503 26091503 26091503 26091503 26091503 26091503 26091503 26091503 26091503 26091503 26091503 26091503 26091503 26091503 26091503 26091503 26091503 26091503 26091503

15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5

150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150

2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325

Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

10/25/2016 10/25/2016 10/25/2016 10/25/2016 10/27/2016 10/25/2016 10/27/2016 10/25/2016 10/25/2016 10/27/2016 10/25/2016 10/25/2016 10/25/2016 10/25/2016 10/25/2016 10/25/2016 10/25/2016 3/15/2017 3/15/2017 3/15/2017 3/15/2017 3/15/2017 3/15/2017 3/15/2017 3/15/2017 3/15/2017 3/15/2017 3/15/2017 3/15/2017 3/15/2017 3/15/2017 3/15/2017 3/15/2017

Certification in GSE Report Date 9/19/2016 Certification in GSE Report Date 9/19/2016 Certification in GSE Report Date 9/19/2016 Certification in GSE Report Date 9/19/2016 Certification in GSE Report Date 9/19/2016 Certification in GSE Report Date 9/19/2016 Certification in GSE Report Date 9/19/2016 Certification in GSE Report Date 9/19/2016 Certification in GSE Report Date 9/19/2016 Certification in GSE Report Date 9/19/2016 Certification in GSE Report Date 9/19/2016 Certification in GSE Report Date 9/19/2016 Certification in GSE Report Date 9/19/2016 Certification in GSE Report Date 9/19/2016 Certification in GSE Report Date 9/19/2016 Certification in GSE Report Date 9/19/2016 Certification in GSE Report Date 9/19/2016 Certification in GSE Report Date 9/19/2016 Certification in GSE Report Date 9/19/2016 Certification in GSE Report Date 9/19/2016 Certification in GSE Report Date 9/19/2016 Certification in GSE Report Date 9/19/2016 Certification in GSE Report Date 9/19/2016 Certification in GSE Report Date 9/19/2016 Certification in GSE Report Date 9/19/2016 Certification in GSE Report Date 9/19/2016 Certification in GSE Report Date 9/19/2016 Certification in GSE Report Date 9/19/2016 Certification in GSE Report Date 9/19/2016 Certification in GSE Report Date 9/19/2016 Certification in GSE Report Date 9/19/2016 Certification in GSE Report Date 9/19/2016 Certification in GSE Report Date 9/19/2016

1 of 21

MATERIAL INVENTORY RECORD Client Name: Project Location:

Material Type:

SCS Engineers CQA Technician: Whit Martin, Bryan Ross

Independence Power & Light Blue Valley Power Station 21500 E Truman Rd, Independence, Missouri

SCS Engineers Project Name: SCS Engineers Project Number:

IPL BVPS Ash Impoundment Closure 27215142.00

GCL - GSE Bentoliner BLI-0750-06N-03S-D-00

Roll No.

Daily Lot

Width (ft)

Roll Size Length (ft)

Area (sq. ft)

QC Docs Received

Date Used

Remarks

502278547 502278548 502278549 502278550 502278551 502278552 502278553 502278554 502278555 502278556 502278557 502278558 502278559 502278560 502278561 502278562 502278563 502278564 502278565 502278566 502278567 502278568 502278569 502278570 502278571 502278572 502278573 502278574 502278575 502278576 502278577 502278578

15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5

150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150

2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325

Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

3/15/2017 10/27/2016 10/27/2016 10/27/2016 10/27/2016 10/27/2016 10/27/2016 10/27/2016 10/27/2016 10/27/2016 10/27/2016 10/27/2016 10/27/2016 10/27/2016 10/27/2016 10/27/2016 10/27/2016 10/27/2016 10/27/2016 2/13/2017 2/13/2017 2/13/2017 2/13/2017 2/13/2017 2/13/2017 2/13/2017 2/13/2017 2/13/2017 2/13/2017 2/13/2017 2/13/2017 2/13/2017

502278579

26091603

15.5

150

2325

Yes

2/13/2017

Certification in GSE Report Date 9/19/2016

2 of 21

MATERIAL INVENTORY RECORD Client Name: Project Location:

Material Type:

SCS Engineers CQA Technician: Whit Martin, Bryan Ross

Independence Power & Light Blue Valley Power Station 21500 E Truman Rd, Independence, Missouri

SCS Engineers Project Name: SCS Engineers Project Number:

IPL BVPS Ash Impoundment Closure 27215142.00

GCL - GSE Bentoliner BLI-0750-06N-03S-D-00

Roll No.

Daily Lot

Width (ft)

Roll Size Length (ft)

Area (sq. ft)

QC Docs Received

Date Used

Remarks

502278580 502278581 502278582 502278583 502278584 502278585 502278586 502278587 502278588 502278589 502278590 502278591 502278592 502278593 502278594 502278595 502278596 502278597 502278598 502278599 502278600 502278601 502278602 502278603 502278604 502278605 502278606 502278607 502278608 502278609 502278610 502278611 502278612

26091603 26091603 26091603 26091603 26091603 26091603 26091603 26091603 26091603 26091603 26091603 26091603 26091603 26091603 26091603 26091603 26091603 26091603 26091603 26091603 26091603 26091603 26091603 26091603 26091603 26091603 26091603 26091603 26091603 26091603 26091603 26091603 26091603

15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5

150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150

2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325

Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

2/13/2017 2/13/2017 2/13/2017 2/14/2017 2/14/2017 2/13/2017 2/13/2017 2/14/2017 2/14/2017 2/14/2017 12/1/2016 2/14/2017 2/14/2017 2/14/2017 2/14/2017 2/14/2017 2/14/2017 2/14/2017 2/14/2017 2/13/2017 2/14/2017 2/14/2017 12/1/2016 12/1/2016 12/1/2016 12/1/2016 12/1/2016 12/1/2016 12/1/2016 12/1/2016 12/1/2016 12/1/2016 12/1/2016

3 of 21

MATERIAL INVENTORY RECORD Client Name: Project Location:

Material Type:

SCS Engineers CQA Technician: Whit Martin, Bryan Ross

Independence Power & Light Blue Valley Power Station 21500 E Truman Rd, Independence, Missouri

SCS Engineers Project Name: SCS Engineers Project Number:

IPL BVPS Ash Impoundment Closure 27215142.00

GCL - GSE Bentoliner BLI-0750-06N-03S-D-00

Roll No.

Daily Lot

Width (ft)

Roll Size Length (ft)

Area (sq. ft)

QC Docs Received

Date Used

Remarks

502278613 502278614 502278615 502278616 502278617 502278618 502278619 502278620 502278621 502278622 502278623 502278624 502278625 502278626 502278627 502278628 502278629 502278630 502278631 502278632 502278633 502278635 502278636 502278637 502278638 502278639 502278640 502278641 502278642 502278643 502278644 502278645 502278646

15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5

150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150

2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325

Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

12/1/2016 12/1/2016 12/1/2016 12/1/2016 12/1/2016 12/1/2016 12/1/2016 12/1/2016 12/1/2016 10/28/2016 10/28/2016 12/1/2016 12/1/2016 12/1/2016 10/28/2016 10/27/2016 10/28/2016 10/28/2016 10/28/2016 12/1/2016 10/28/2016 10/28/2016 12/1/2016 10/28/2016 10/28/2016 10/28/2016 12/1/2016 2/15/2017 2/16/2017 2/15/2017 2/16/2017 2/15/2017 2/15/2017

4 of 21

MATERIAL INVENTORY RECORD Client Name: Project Location:

Material Type:

SCS Engineers CQA Technician: Whit Martin, Bryan Ross

Independence Power & Light Blue Valley Power Station 21500 E Truman Rd, Independence, Missouri

SCS Engineers Project Name: SCS Engineers Project Number:

IPL BVPS Ash Impoundment Closure 27215142.00

GCL - GSE Bentoliner BLI-0750-06N-03S-D-00

Roll No.

Daily Lot

Width (ft)

Roll Size Length (ft)

Area (sq. ft)

QC Docs Received

Date Used

Remarks

502278647 502278648 502278649 502278650 502278651 502278652 502278653 502278654 502278655 502278656 502278657 502278658 502278659 502278660 502278661 502278662 502278663 502278664 502278665

26091603 26091603 26091603 26091603 26091603 26091603 26091603 26091603 26091603 26091603 26091603 26091603 26091603 26091603 26091603 26091603 26091603 26091603 26091603

15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5

150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150

2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325

Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

2/16/2017 2/15/2017 2/16/2017 2/16/2017 2/16/2017 2/16/2017 2/16/2017 2/16/2017 2/16/2017 2/16/2017 2/16/2017 2/16/2017 2/16/2017 2/17/2017 2/17/2017 2/15/2017 10/25/2016 2/17/2017 2/17/2017

502278666 502278667 502278668 502278669 502278670 502278671 502278672 502278673 502278674 502278675 502278676 502278677 502278678 502278679

26091703 26091703 26091703 26091703 26091703 26091703 26091703 26091703 26091703 26091703 26091703 26091703 26091703 26091703

15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5

150 150 150 150 150 150 150 150 150 150 150 150 150 150

2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325

Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

2/17/2017 2/17/2017 2/16/2017 2/17/2017 2/17/2017 2/17/2017 2/17/2017 2/17/2017 2/17/2017 2/17/2017 2/16/2017 2/16/2017 2/17/2017 2/17/2017

5 of 21

MATERIAL INVENTORY RECORD Client Name: Project Location:

Material Type:

SCS Engineers CQA Technician: Whit Martin, Bryan Ross

Independence Power & Light Blue Valley Power Station 21500 E Truman Rd, Independence, Missouri

SCS Engineers Project Name: SCS Engineers Project Number:

IPL BVPS Ash Impoundment Closure 27215142.00

GCL - GSE Bentoliner BLI-0750-06N-03S-D-00

Roll No.

Daily Lot

Width (ft)

Roll Size Length (ft)

Area (sq. ft)

QC Docs Received

Date Used

Remarks

502278680 502278681 502278682 502278683 502278684 502278685 502278686 502278687 502278688 502278689 502278690 502278691 502278692 502278693 502278694 502278695 502278696 502278697 502278698 502278699 502278700 502278701 502278702 502278703 502278704 502278705 502278706 502278707 502278708 502278709 502278710 502278711 502278712

26091703 26091703 26091703 26091703 26091703 26091703 26091703 26091703 26091703 26091703 26091703 26091703 26091703 26091703 26091703 26091703 26091703 26091703 26091703 26091703 26091703 26091703 26091703 26091703 26091703 26091703 26091703 26091703 26091703 26091703 26091703 26091703 26091703

15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5

150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150

2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325

Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/14/2017 2/14/2017 2/14/2017 2/14/2017 2/14/2017 2/14/2017 2/14/2017 2/14/2017 2/14/2017 2/14/2017

6 of 21

MATERIAL INVENTORY RECORD Client Name: Project Location:

Material Type:

SCS Engineers CQA Technician: Whit Martin, Bryan Ross

Independence Power & Light Blue Valley Power Station 21500 E Truman Rd, Independence, Missouri

SCS Engineers Project Name: SCS Engineers Project Number:

IPL BVPS Ash Impoundment Closure 27215142.00

GCL - GSE Bentoliner BLI-0750-06N-03S-D-00

Roll No.

Daily Lot

Width (ft)

Roll Size Length (ft)

Area (sq. ft)

QC Docs Received

Date Used

Remarks

502286362 502286363 502286364 502286465 502286466 502286467 502286468 502286469 502286470 502286471 502286472 502286473 502286474 502286475 502286476 502286477 502286478 502286479 502286480 502286481 502286482 502286483 502286484 502286485 502286486 502286487 502286488 502286489 502286490 502286491 502286492 502286493 502286494

27021403 27021403 27021403 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603

15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5

150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150

2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325

Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

4/13/2017 4/12/2017 4/13/2017 4/13/2017 4/13/2017 4/12/2017 3/23/2017 3/23/2017 4/11/2017 4/11/2017 4/11/2017 4/11/2017 6/20/2017 6/19/2017 4/19/2017 4/13/2017 4/19/2017 4/13/2017 4/12/2017 4/11/2017 4/11/2017 4/12/2017 4/11/2017 4/11/2017 4/12/2017 4/11/2017 4/11/2017 4/11/2017 4/12/2017 4/11/2017 4/11/2017 4/11/2017 4/12/2017

Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017

7 of 21

MATERIAL INVENTORY RECORD Client Name: Project Location:

Material Type:

SCS Engineers CQA Technician: Whit Martin, Bryan Ross

Independence Power & Light Blue Valley Power Station 21500 E Truman Rd, Independence, Missouri

SCS Engineers Project Name: SCS Engineers Project Number:

IPL BVPS Ash Impoundment Closure 27215142.00

GCL - GSE Bentoliner BLI-0750-06N-03S-D-00

Roll No.

Daily Lot

Width (ft)

Roll Size Length (ft)

Area (sq. ft)

QC Docs Received

Date Used

Remarks

502286495 502286496 502286497 502286498 502286499 502286500 502286501 502286502 502286503 502286504 502286505 502286506 502286507 502286508 502286509 502286510 502286511 502286512 502286513 502286514 502286515 502286516 502286517 502286518 502286519 502286520 502286521 502286522 502286523 502286524 502286525 502286526 502286527

27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603

15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5

150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150

2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325

Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

4/11/2017 4/11/2017 4/11/2017 6/19/2017 6/19/2017 6/19/2017 6/20/2017 6/19/2017 6/20/2017 6/20/2017 6/19/2017 6/19/2017 6/19/2017 6/19/2017 4/20/2017 6/21/2017 6/20/2017 6/19/2017 6/21/2017 6/20/2017 6/20/2017 6/21/2017 3/15/2017 3/15/2017 3/15/2017 3/15/2017 6/20/2017 6/21/2017 6/20/2017 6/20/2017 6/21/2017 3/15/2017 3/15/2017

8 of 21

MATERIAL INVENTORY RECORD Client Name: Project Location:

Material Type:

SCS Engineers CQA Technician: Whit Martin, Bryan Ross

Independence Power & Light Blue Valley Power Station 21500 E Truman Rd, Independence, Missouri

SCS Engineers Project Name: SCS Engineers Project Number:

IPL BVPS Ash Impoundment Closure 27215142.00

GCL - GSE Bentoliner BLI-0750-06N-03S-D-00

Roll No.

Daily Lot

Width (ft)

Roll Size Length (ft)

Area (sq. ft)

QC Docs Received

Date Used

Remarks

502286528 502286529 502286530 502286531 502286532 502286533 502286534 502286535 502286536 502286537 502286538 502286539 502286540 502286541 502286542 502286543 502286544 502286545 502286546 502286547 502286548 502286549 502286550 502286551 502286552 502286553 502286554 502286555 502286556 502286557 502286558 502286559 502286560

27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021603 27021703 27021703 27021703 27021703 27021703 27021703 27021703 27021703 27021703 27021703

15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5

150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150

2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325

Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

3/15/2017 3/15/2017 3/15/2017 6/22/2017 6/20/2017 6/21/2017 6/20/2017 6/22/2017 6/21/2017 3/15/2017 3/15/2017 3/23/2017 3/15/2017 3/15/2017 6/20/2017 6/21/2017 6/21/2017 3/23/2017 6/22/2017 3/23/2017 3/15/2017 6/22/2017 6/22/2017 6/22/2017 6/22/2017 4/20/2017 6/22/2017 6/22/2017 3/15/2017 4/20/2017 6/22/2017 6/22/2017 6/21/2017

9 of 21

MATERIAL INVENTORY RECORD Client Name: Project Location:

Material Type:

SCS Engineers CQA Technician: Whit Martin, Bryan Ross

Independence Power & Light Blue Valley Power Station 21500 E Truman Rd, Independence, Missouri

SCS Engineers Project Name: SCS Engineers Project Number:

IPL BVPS Ash Impoundment Closure 27215142.00

GCL - GSE Bentoliner BLI-0750-06N-03S-D-00

Roll No.

Daily Lot

Width (ft)

Roll Size Length (ft)

Area (sq. ft)

QC Docs Received

Date Used

Remarks

502286561 502286562 502286563 502286564 502286565 502286566 502286567 502286568 502286569 502286570 502286571 502286572 502286573 502286574 502286575 502286576 502286577 502286578 502286579 502286580 502286581 502286582 502286583 502286584 502286585 502286586 502286587 502286588 502286589 502286590 502286591 502286592 502286593

27021703 27021703 27021703 27021703 27021703 27021703 27021703 27021703 27021703 27021703 27021703 27021703 27021703 27021703 27021703 27021703 27021703 27021703 27021703 27021703 27021703 27021703 27021703 27021703 27021703 27021703 27021703 27021703 27021703 27021703 27021703 27021703 27021703

15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5

150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150

2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325

Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

6/22/2017 6/21/2017 6/22/2017 6/21/2017 6/22/2017 6/21/2017 6/21/2017 6/21/2017 6/20/2017 6/21/2017 6/20/2017 6/21/2017 6/20/2017 6/21/2017 6/21/2017 6/20/2017 6/22/2017 6/22/2017 6/20/2017 6/21/2017 6/20/2017 4/12/2017 4/12/2017 6/21/2017 6/22/2017 6/20/2017 6/21/2017 3/23/2017 3/23/2017 3/23/2017 4/12/2017 4/13/2017 4/13/2017

10 of 21

MATERIAL INVENTORY RECORD Client Name: Project Location:

Material Type:

SCS Engineers CQA Technician: Whit Martin, Bryan Ross

Independence Power & Light Blue Valley Power Station 21500 E Truman Rd, Independence, Missouri

SCS Engineers Project Name: SCS Engineers Project Number:

IPL BVPS Ash Impoundment Closure 27215142.00

GCL - GSE Bentoliner BLI-0750-06N-03S-D-00

Roll No.

Daily Lot

Width (ft)

Roll Size Length (ft)

Area (sq. ft)

QC Docs Received

Date Used

Remarks

502286594 502286595 502286596 502286597 502286598 502286599 502286600 502286601 502286602 502286603 502286604 502286605 502286606 502286607 502286608 502286610 502286611 502286612 502286613 502286614 502286615 502286616 502286617 502286618 502286619 502286620 502286621 502286622 502286623 502286624 502291547 502292238 502292239

15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5

150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150

2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325

Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

4/13/2017 4/12/2017 4/12/2017 3/23/2017 3/23/2017 3/23/2017 4/13/2017 4/11/2017 4/2/2017 4/13/2017 4/20/2017 4/19/2017 4/19/2017 4/20/2017 4/20/2017 4/20/2017 4/20/2017 4/19/2017 4/20/2017 4/11/2017 4/11/2017 3/23/2017 4/12/2017 4/20/2017 4/20/2017 4/13/2017 4/11/2017 3/23/2017 3/23/2017 4/13/2017 7/13/2017 7/17/2017 7/18/2017

Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 2/17/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017

11 of 21

MATERIAL INVENTORY RECORD Client Name: Project Location:

Material Type:

SCS Engineers CQA Technician: Whit Martin, Bryan Ross

Independence Power & Light Blue Valley Power Station 21500 E Truman Rd, Independence, Missouri

SCS Engineers Project Name: SCS Engineers Project Number:

IPL BVPS Ash Impoundment Closure 27215142.00

GCL - GSE Bentoliner BLI-0750-06N-03S-D-00

Roll No.

Daily Lot

Width (ft)

Roll Size Length (ft)

Area (sq. ft)

QC Docs Received

Date Used

Remarks

502292240 502292241 502292242 502292243 502292244 502292245 502292246 502292247 502292248 502292249 502292250 502292251 502292252 502292253 502292254 502292255 502292256 502292257 502292258 502292259 502292260 502292262 502292263 502292264 502292265 502292266 502292267 502292268 502292269 502292270 502292271 502292272 502292273

27060903 27060903 27060903 27060903 27060903 27060903 27060903 27060903 27060903 27060903 27060903 27060903 27060903 27060903 27060903 27060903 27060903 27060903 27060903 27060903 27060903 27060903 27060903 27060903 27060903 27060903 27060903 27060903 27060903 27060903 27060903 27060903 27060903

15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5

150 150 150 114 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150

2325 2325 2325 1767 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325

Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

7/17/2017 7/17/2017 7/19/2017 7/17/2017 7/18/2017 7/18/2017 7/18/2017 7/18/2017 7/18/2017 7/19/2017 7/18/2017 7/12/2017 7/11/2017 7/12/2017 7/11/2017 7/12/2017 7/12/2017 7/12/2017 7/12/2017 7/12/2017 7/11/2017 7/11/2017 7/12/2017 7/17/2017 7/12/2017 7/17/2017 7/12/2017 7/12/2017 7/12/2017 7/17/2017 7/12/2017 7/17/2017 7/12/2017

Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017

12 of 21

MATERIAL INVENTORY RECORD Client Name: Project Location:

Material Type:

SCS Engineers CQA Technician: Whit Martin, Bryan Ross

Independence Power & Light Blue Valley Power Station 21500 E Truman Rd, Independence, Missouri

SCS Engineers Project Name: SCS Engineers Project Number:

IPL BVPS Ash Impoundment Closure 27215142.00

GCL - GSE Bentoliner BLI-0750-06N-03S-D-00

Roll No.

Daily Lot

Width (ft)

Roll Size Length (ft)

Area (sq. ft)

QC Docs Received

Date Used

Remarks

502292274 502292275 502292276 502292277 502292278 502292279 502292280 502292281 502292282 502292283 502292284 502292285 502292286 502292287 502292288 502292289 502292290 502292291 502292292 502292293 502292294 502292295 502292296 502292297 502292298 502292299 502292300 502292301 502292302 502292303 502292304 502292305 502292306

15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5

150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150

2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325

Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

7/12/2017 7/12/2017 7/18/2017 7/17/2017 7/17/2017 7/18/2017 7/17/2017 7/17/2017 7/17/2017 7/17/2017 7/17/2017 7/17/2017 7/17/2017 7/17/2017 7/17/2017 7/18/2017 7/17/2017 7/18/2017 7/13/2017 7/13/2017 7/14/2017 7/13/2017 7/13/2017 7/13/2017 7/13/2017 7/13/2017 7/13/2017 7/13/2017 7/13/2017 7/6/2017 7/6/2017 7/13/2017 7/13/2017

13 of 21

MATERIAL INVENTORY RECORD Client Name: Project Location:

Material Type:

SCS Engineers CQA Technician: Whit Martin, Bryan Ross

Independence Power & Light Blue Valley Power Station 21500 E Truman Rd, Independence, Missouri

SCS Engineers Project Name: SCS Engineers Project Number:

IPL BVPS Ash Impoundment Closure 27215142.00

GCL - GSE Bentoliner BLI-0750-06N-03S-D-00

Roll No.

Daily Lot

Width (ft)

Roll Size Length (ft)

Area (sq. ft)

QC Docs Received

Date Used

Remarks

502292307 502292308 502292309 502292310 502292311 502292312 502292313 502292314 502292315 502292316 502292317 502292318 502292319 502292320 502292321 502292322 502292323 502292324 502292325 502292326 502292327 502292328 502292329 502292330 502292331 502292332 502292333 502292334 502292335 502292336 502292337 502292338 502292339

27060903 27060903 27060903 27060903 27060903 27060903 27060903 27060903 27060903 27060903 27060903 27060903 27060903 27060903 27060903 27060903 27060903 27060903 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003

15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5

150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150

2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325

Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

7/13/2017 7/14/2017 7/13/2017 7/13/2017 7/13/2017 7/14/2017 7/14/2017 7/14/2017 7/14/2017 7/13/2017 7/14/2017 7/14/2017 7/14/2017 7/13/2017 7/14/2017 7/13/2017 7/13/2017 7/14/2017 7/13/2017 7/14/2017 7/13/2017 7/14/2017 7/14/2017 7/13/2017 7/11/2017 7/11/2017 7/11/2017 7/12/2017 7/11/2017 7/11/2017 7/12/2017 7/11/2017 7/11/2017

14 of 21

MATERIAL INVENTORY RECORD Client Name: Project Location:

Material Type:

SCS Engineers CQA Technician: Whit Martin, Bryan Ross

Independence Power & Light Blue Valley Power Station 21500 E Truman Rd, Independence, Missouri

SCS Engineers Project Name: SCS Engineers Project Number:

IPL BVPS Ash Impoundment Closure 27215142.00

GCL - GSE Bentoliner BLI-0750-06N-03S-D-00

Roll No.

Daily Lot

Width (ft)

Roll Size Length (ft)

Area (sq. ft)

QC Docs Received

Date Used

Remarks

502292340 502292341 502292342 502292343 502292344 502292345 502292346 502292347 502292348 502292349 502292350 502292351 502292352 502292353 502292354 502292355 502292356 502292357 502292358 502292359 502292360 502292361 502292362 502292363 502292364 502292365 502292366 502292367 502292368 502292369 502292370 502292371 502292372

27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003

15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5

150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150

2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325

Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

7/6/2017 7/6/2017 7/11/2017 7/11/2017 7/12/2017 7/12/2017 7/11/2017 7/11/2017 7/12/2017 7/11/2017 7/11/2017 7/14/2017 7/14/2017 7/13/2017 7/14/2017 7/14/2017 7/14/2017 7/14/2017 7/14/2017 7/14/2017 7/14/2017 7/14/2017 7/14/2017 7/13/2017 7/14/2017 7/14/2017 7/13/2017 7/14/2017 7/14/2017 7/14/2017 7/14/2017 7/11/2017 7/11/2017

15 of 21

MATERIAL INVENTORY RECORD Client Name: Project Location:

Material Type:

SCS Engineers CQA Technician: Whit Martin, Bryan Ross

Independence Power & Light Blue Valley Power Station 21500 E Truman Rd, Independence, Missouri

SCS Engineers Project Name: SCS Engineers Project Number:

IPL BVPS Ash Impoundment Closure 27215142.00

GCL - GSE Bentoliner BLI-0750-06N-03S-D-00

Roll No.

Daily Lot

Width (ft)

Roll Size Length (ft)

Area (sq. ft)

QC Docs Received

Date Used

Remarks

502292373 502292374 502292375 502292376 502292377 502292378 502292379 502292380 502292381 502292382 502292383 502292384 502292385 502292386 502292387 502292388 502292389 502292390 502292391 502292392 502292393 502292394 502292395 502292396 502292397 502292398 502292399 502292400 502292401 502292402 502292403 502292404 502292405

15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5

150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150

2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325

Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

7/6/2017 7/13/2017 7/13/2017 7/13/2017 7/13/2017 7/13/2017 7/6/2017 7/11/2017 7/11/2017 7/6/2017 7/6/2017 7/13/2017 7/6/2017 7/19/2017 9/28/2017 9/29/2017 9/29/2017 9/29/2017 9/28/2017 9/25/2017 9/28/2017 9/28/2017 9/28/2017 9/28/2017 9/28/2017 9/28/2017 9/28/2017 9/28/2017 9/28/2017 9/28/2017 9/28/2017 9/29/2017 9/28/2017

Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/13/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017

16 of 21

MATERIAL INVENTORY RECORD Client Name: Project Location:

Material Type:

SCS Engineers CQA Technician: Whit Martin, Bryan Ross

Independence Power & Light Blue Valley Power Station 21500 E Truman Rd, Independence, Missouri

SCS Engineers Project Name: SCS Engineers Project Number:

IPL BVPS Ash Impoundment Closure 27215142.00

GCL - GSE Bentoliner BLI-0750-06N-03S-D-00

Roll No.

Daily Lot

Width (ft)

Roll Size Length (ft)

Area (sq. ft)

QC Docs Received

Date Used

Remarks

502292406 502292407 502292408 502292409 502292410 502292411 502292412 502292413 502292414 502292415 502292416 502292417 502292418 502292419 502292420 502292421 502292422 502292423 502292424 502292425 502292426 502292427 502292428 502292429 502292430 502292431 502292432 502292433 502292434 502292435 502292436 502292507 502292508

27061003 27061003 27061003 27061003 27061003 27061103 27061103 27061103 27061103 27061103 27061103 27061103 27061103 27061103 27061103 27061103 27061103 27061103 27061103 27061103 27061103 27061103 27061103 27061103 27061103 27061103 27061103 27061103 27061103 27061103 27061103 27061403 27061403

15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5

150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 94 150 150 150 92 150 150 150 150

2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 1457 2325 2325 2325 1426 2325 2325 2325 2325

Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

9/25/2017 9/28/2017 9/25/2017 9/25/2017 9/25/2017 7/18/2017 7/19/2017 7/18/2017 7/19/2017 Used Used 7/19/2017 Used 7/19/2017 7/19/2017 9/25/2017 7/18/2017 9/25/2017 9/25/2017 9/25/2017 9/25/2017 7/19/2017 9/25/2017 7/17/2017 9/28/2017 7/18/2017 7/17/2017 7/18/2017 7/18/2017 7/18/2017 7/18/2017 10/2/2017 Used

Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/14/2017 Certification in GSE Report Date 6/16/2017 Certification in GSE Report Date 6/16/2017

17 of 21

MATERIAL INVENTORY RECORD Client Name: Project Location:

Material Type:

SCS Engineers CQA Technician: Whit Martin, Bryan Ross

Independence Power & Light Blue Valley Power Station 21500 E Truman Rd, Independence, Missouri

SCS Engineers Project Name: SCS Engineers Project Number:

IPL BVPS Ash Impoundment Closure 27215142.00

GCL - GSE Bentoliner BLI-0750-06N-03S-D-00

Roll No.

Daily Lot

Width (ft)

Roll Size Length (ft)

Area (sq. ft)

QC Docs Received

Date Used

Remarks

502292509 502292510 502292511 502292512 502292513 502292514 502292515 502292516 502292517 502292518 502292519 502292520 502292521 502292522 502292523 502292524 502292525 502292526 502292527 502292528 502292529 502292530 502292531 502292532 502292533 502292534 502292535 502292536 502292537 502292538 502292539 502292540 502292541

27061403 27061403 27061403 27061403 27061403 27061403 27061403 27061403 27061403 27061403 27061403 27061403 27061403 27061403 27061403 27061403 27061403 27061403 27061403 27061403 27061403 27061503 27061503 27061503 27061503 27061503 27061503 27061503 27061503 27061503 27061503 27061503 27061503

15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5

150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150

2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325

Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

10/2/2017 Used 10/2/2017 Used Used 10/2/2017 10/2/2017 10/2/2017 Not Used Used 10/2/2017 Not Used 10/2/2017 10/2/2017 Used 7/13/2017 Not Used 7/13/2017 6/23/2017 6/23/2017 6/23/2017 6/23/2017 6/23/2017 6/23/2017 6/23/2017 6/23/2017 6/23/2017 6/23/2017 6/23/2017 6/23/2017 6/23/2017 6/23/2017 6/23/2017

Certification in GSE Report Date 6/16/2017 Certification in GSE Report Date 6/16/2017 Certification in GSE Report Date 6/16/2017 Certification in GSE Report Date 6/16/2017 Certification in GSE Report Date 6/16/2017 Certification in GSE Report Date 6/16/2017 Certification in GSE Report Date 6/16/2017 Certification in GSE Report Date 6/16/2017 Certification in GSE Report Date 6/16/2017 Certification in GSE Report Date 6/16/2017 Certification in GSE Report Date 6/16/2017 Certification in GSE Report Date 6/16/2017 Certification in GSE Report Date 6/16/2017 Certification in GSE Report Date 6/16/2017 Certification in GSE Report Date 6/16/2017 Certification in GSE Report Date 6/16/2017 Certification in GSE Report Date 6/16/2017 Certification in GSE Report Date 6/16/2017 Certification in GSE Report Date 6/16/2017 Certification in GSE Report Date 6/16/2017 Certification in GSE Report Date 6/16/2017 Certification in GSE Report Date 6/16/2017 Certification in GSE Report Date 6/16/2017 Certification in GSE Report Date 6/16/2017 Certification in GSE Report Date 6/16/2017 Certification in GSE Report Date 6/16/2017 Certification in GSE Report Date 6/16/2017 Certification in GSE Report Date 6/16/2017 Certification in GSE Report Date 6/16/2017 Certification in GSE Report Date 6/16/2017 Certification in GSE Report Date 6/16/2017 Certification in GSE Report Date 6/16/2017 Certification in GSE Report Date 6/16/2017

18 of 21

MATERIAL INVENTORY RECORD Client Name: Project Location:

Material Type:

SCS Engineers CQA Technician: Whit Martin, Bryan Ross

Independence Power & Light Blue Valley Power Station 21500 E Truman Rd, Independence, Missouri

SCS Engineers Project Name: SCS Engineers Project Number:

IPL BVPS Ash Impoundment Closure 27215142.00

GCL - GSE Bentoliner BLI-0750-06N-03S-D-00

Roll No.

Daily Lot

Width (ft)

Roll Size Length (ft)

Area (sq. ft)

QC Docs Received

Date Used

Remarks

502292542 502292543 502292544 502292545 502292546 502292547 502292548 502292549 502292550 502292551 502292552 502292553 502292554 502292555 502292556 502292557 502292558 502292559 502292560 502292561 502292562 502292563 502292564 502292566 502292567 502292568 502292569 502292570 502292571 502292572 502292573 502292574 502292575

27061503 27061503 27061503 27061503 27061503 27061503 27061503 27061503 27061503 27061503 27061503 27061503 27061503 27061503 27061503 27061503 27061503 27061503 27061503 27061503 27061503 27061503 27061503 27061503 27061503 27061503 27061503 27061503 27061503 27061503 27061503 27061503 27061503

15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5

150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150

2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325

Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

6/23/2017 6/23/2017 6/23/2017 6/23/2017 6/23/2017 9/30/2017 9/30/2017 10/2/2017 10/2/2017 10/2/2017 10/2/2017 9/30/2017 10/2/2017 10/2/2017 10/2/2017 10/2/2017 9/30/2017 10/2/2017 10/2/2017 9/30/2017 10/2/2017 9/30/2017 9/30/2017 10/2/2017 10/2/2017 9/29/2017 9/30/2017 9/29/2017 9/30/2017 9/30/2017 9/29/2017 9/29/2017 9/29/2017

19 of 21

MATERIAL INVENTORY RECORD Client Name: Project Location:

Material Type:

SCS Engineers CQA Technician: Whit Martin, Bryan Ross

Independence Power & Light Blue Valley Power Station 21500 E Truman Rd, Independence, Missouri

SCS Engineers Project Name: SCS Engineers Project Number:

IPL BVPS Ash Impoundment Closure 27215142.00

GCL - GSE Bentoliner BLI-0750-06N-03S-D-00

Roll No.

Daily Lot

Width (ft)

Roll Size Length (ft)

Area (sq. ft)

QC Docs Received

Date Used

Remarks

502292576 502292577 502292578 502292579 502292580 502292581 502292582 502292583 502292584 502292585 502292586 502292587 502292588 502292589 502292590 502292591 502292592 502292593 502292594 502292595 502292596 502292597 502292598 502292599 502292600 502292601 502292602 502292603 502292604 502292605 502292606 502292607 502292608

15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5

150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150

2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325

Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

9/30/2017 9/29/2017 9/29/2017 9/29/2017 9/30/2017 9/30/2017 9/30/2017 9/29/2017 6/21/2017 9/29/2017 9/29/2017 9/29/2017 9/28/2017 9/29/2017 9/30/2017 9/30/2017 9/30/2017 9/29/2017 9/29/2017 9/25/2017 9/29/2017 9/29/2017 9/29/2017 9/29/2017 9/29/2017 9/29/2017 9/29/2017 9/29/2017 9/29/2017 9/29/2017 9/25/2017 7/19/2017 9/25/2017

20 of 21

MATERIAL INVENTORY RECORD Client Name: Project Location:

Material Type:

SCS Engineers CQA Technician: Whit Martin, Bryan Ross

Independence Power & Light Blue Valley Power Station 21500 E Truman Rd, Independence, Missouri

SCS Engineers Project Name: SCS Engineers Project Number:

IPL BVPS Ash Impoundment Closure 27215142.00

GCL - GSE Bentoliner BLI-0750-06N-03S-D-00

Roll No.

Daily Lot

Width (ft)

Roll Size Length (ft)

Area (sq. ft)

QC Docs Received

Date Used

Remarks

502292609 502292610 502292611 502292612 502292613 502292614 502292615 502292616 502292617 502292618 502292619 502292620

27061503 27061503 27061503 27061503 27061503 27061503 27061503 27061503 27061503 27061503 27061503 27061503

15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5

150 150 150 150 150 150 150 150 150 150 150 150

2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325

Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

9/25/2017 9/25/2017 9/25/2017 9/28/2017 9/25/2017 9/28/2017 9/28/2017 9/25/2017 9/25/2017 9/25/2017 9/25/2017 9/25/2017

21 of 21

MATERIAL INVENTORY RECORD Client Name: Project Location:

Material Type:

SCS Engineers CQA Technician: Whit Martin, Bryan Ross

Independence Power & Light Blue Valley Power Station 21500 E Truman Rd, Independence, Missouri

SCS Engineers Project Name: SCS Engineers Project Number:

IPL BVPS Ash Impoundment Closure 27215142.00

CAR GCL - GSE Bentoliner BLI-0750-06N-03S-D-0R

Roll No.

Daily Lot

Width (ft)

Roll Size Length (ft)

135055686 135055687 135055688 135055689 135055690 135055691 135055692 135055693 135055694 135055695 135055696 135055697 135055698 135055699 135055700 135055701 135055702 135055703 135055704 135055705 135055706 135055707 135055708 135055709 135055710 135055711 135055712

37020715 37020715 37020715 37021503 37021503 37021503 37021503 37020715 37021503 37021503 37021503 37021503 37021503 37021503 37021503 37021503 37021503 37021503 37021503 37021503 37021503 37021503 37021503 37021503 37021503 37021503 37021503

15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5

150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150

Area (sq. ft)

QC Docs Received

Date Used

Remarks

2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325

Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

7/7/2017 7/7/2017 4/19/2017 4/19/2017 4/19/2017 4/19/2017 7/7/2017 7/7/2017 4/19/2017 Used 7/7/2017 7/7/2017 4/19/2017 Used 9/13/2017 9/13/2017 4/19/2017 4/19/2017 4/19/2017 7/7/2017 4/19/2017 9/11/2017 9/13/2017 9/11/2017 7/7/2017 9/13/2017 7/7/2017

Certification in GSE Report 3/1/2017, revised 3/14/2017 Certification in GSE Report 3/1/2017, revised 3/14/2017 Certification in GSE Report 3/1/2017, revised 3/14/2017 Certification in GSE Report 3/1/2017, revised 3/14/2017 Certification in GSE Report 3/1/2017, revised 3/14/2017 Certification in GSE Report 3/1/2017, revised 3/14/2017 Certification in GSE Report 3/1/2017, revised 3/14/2017 Certification in GSE Report 3/1/2017, revised 3/14/2017 Certification in GSE Report 3/1/2017, revised 3/14/2017 Certification in GSE Report 3/1/2017, revised 3/14/2017 Certification in GSE Report 3/1/2017, revised 3/14/2017 Certification in GSE Report 3/1/2017, revised 3/14/2017 Certification in GSE Report 3/1/2017, revised 3/14/2017 Certification in GSE Report 3/1/2017, revised 3/14/2017 Certification in GSE Report 3/1/2017, revised 3/14/2017 Certification in GSE Report 3/1/2017, revised 3/14/2017 Certification in GSE Report 3/1/2017, revised 3/14/2017 Certification in GSE Report 3/1/2017, revised 3/14/2017 Certification in GSE Report 3/1/2017, revised 3/14/2017 Certification in GSE Report 3/1/2017, revised 3/14/2017 Certification in GSE Report 3/1/2017, revised 3/14/2017 Certification in GSE Report 3/1/2017, revised 3/14/2017 Certification in GSE Report 3/1/2017, revised 3/14/2017 Certification in GSE Report 3/1/2017, revised 3/14/2017 Certification in GSE Report 3/1/2017, revised 3/14/2017 Certification in GSE Report 3/1/2017, revised 3/14/2017 Certification in GSE Report 3/1/2017, revised 3/14/2017

1 of 2

MATERIAL INVENTORY RECORD Client Name: Project Location:

Material Type:

SCS Engineers CQA Technician: Whit Martin, Bryan Ross

Independence Power & Light Blue Valley Power Station 21500 E Truman Rd, Independence, Missouri

SCS Engineers Project Name: SCS Engineers Project Number:

IPL BVPS Ash Impoundment Closure 27215142.00

CAR GCL - GSE Bentoliner BLI-0750-06N-03S-D-0R

Roll No.

Daily Lot

Width (ft)

Roll Size Length (ft)

135055713 135055714 135055715 135055716 135055717 135055718 135055719 135055720 135055722 135059301 135059302 135059303 135059300 135059298 135059304 135059299

37021503 37021503 37021503 37021503 37021503 37021503 37021503 37021503 37021503 37071304 37071304 37071304 37071304 37071304 37071304 37071304

15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5

150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150

Area (sq. ft)

QC Docs Received

Date Used

Remarks

2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325 2325

Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

9/11/2017 9/13/2017 9/11/2017 9/13/2017 9/13/2017 9/13/2017 9/13/2017 9/13/2017 9/13/2017 9/11/2017 9/11/2017 9/11/2017 9/11/2017 9/11/2017 9/11/2017 9/11/2017

2 of 2

D2: GCL Manufacturer’s Certifications

Report Date 6/14/2017

BentoLiner Manufacturing Certification

Sales Order:

81892

Customer:

Clean Air and Water Systems, LLC

Project:

CAAWS/Blue Valley Power Additional

Product Type:

BLI-075-06N-03S-D-00 BentoLiner NSL

The GCL purchased and shipped for the above referenced project does meet or exceed the project specifications. The GCL supplied to this project has been continuously inspected for the presence of needles and is certified to be needle free.

Chuck Taylor Laboratory Technician

Jane Allen Laboratory Manager

GSE 8.2.4-033

Revision 03 10/23/12

GSE Environmental, LLC

Page 1 6/14/2017 04:01:09 pm

Roll Allocation List Sales Order Customer Name Project Name Serial number

SO081892 Clean Air and Water Systems, LLC CAAWS/Blue Valley Power Additional Item Number

502292386 BLI07506N03SD00 502292387 BLI07506N03SD00 502292388 BLI07506N03SD00 502292389 BLI07506N03SD00 502292390 BLI07506N03SD00 502292391 BLI07506N03SD00 502292392 BLI07506N03SD00 502292393 BLI07506N03SD00 502292394 BLI07506N03SD00 502292395 BLI07506N03SD00 502292396 BLI07506N03SD00 502292397 BLI07506N03SD00 502292398 BLI07506N03SD00 502292399 BLI07506N03SD00 502292400 BLI07506N03SD00 502292401 BLI07506N03SD00 502292402 BLI07506N03SD00 502292403 BLI07506N03SD00 502292404 BLI07506N03SD00 502292405 BLI07506N03SD00 502292406 BLI07506N03SD00 502292407 BLI07506N03SD00 502292408 BLI07506N03SD00 502292409 BLI07506N03SD00 502292410 BLI07506N03SD00 502292411 BLI07506N03SD00 502292412 BLI07506N03SD00 502292413 BLI07506N03SD00 502292414 BLI07506N03SD00 502292415 BLI07506N03SD00 502292416 BLI07506N03SD00 502292417 BLI07506N03SD00 502292418 BLI07506N03SD00 502292419 BLI07506N03SD00 502292420 BLI07506N03SD00 502292421 BLI07506N03SD00 502292422 BLI07506N03SD00 502292423 BLI07506N03SD00 502292424 BLI07506N03SD00 502292425 BLI07506N03SD00 502292426 BLI07506N03SD00 502292427 BLI07506N03SD00 GSE 8.2.4021 Rev 01 08/12

Daily lot

Roll width

Top

Bottom

Clay

Length

27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061003 27061103 27061103 27061103 27061103 27061103 27061103 27061103 27061103 27061103 27061103 27061103 27061103 27061103 27061103 27061103 27061103 27061103

15.50 15.50 15.50 15.50 15.50 15.50 15.50 15.50 15.50 15.50 15.50 15.50 15.50 15.50 15.50 15.50 15.50 15.50 15.50 15.50 15.50 15.50 15.50 15.50 15.50 15.50 15.50 15.50 15.50 15.50 15.50 15.50 15.50 15.50 15.50 15.50 15.50 15.50 15.50 15.50 15.50 15.50

2024979610 2024979610 2024979610 2024979610 2024979610 2024979610 2024979610 2024979610 2024979610 2024979610 2024979615 2024979615 2024979615 2024979615 2024979615 2024979615 2024979615 2024979615 2024979615 2024979617 2024979617 2024979617 2024979617 2024979617 2024979617 2024979617 2024979617 2024979617 2024956493 2024956493 2024956493 2024956493 2024956493 2024956493 2024956493 2024956493 2024956493 2024979643 2024979643 2024979643 2024979643 2024979643

2024854203 2024854203 2024854203 2024854203 2024854203 2024854203 2024854203 2024854203 2024854203 2024854203 2024854203 2024854203 2024854203 2024854203 2024854203 2024854203 2024854203 2024854203 2024854203 2024854203 2024854203 2024854203 2024854203 2024854203 2024854203 2024854203 2024854203 2024854203 2024854203 2024854203 2024854203 2024854203 2024854203 2024854203 2024814992 2024814992 2024814992 2024814992 2024814992 2024814992 2024814992 2024814992

1060117B 1060117B 1060117B 1060117B 1060117B 1060117B 1060117B 1060117B 1060117B 1060117B 1060117B 1060117B 1060117B 1060117B 1060117B 1060117B 1060117B 1060117B 1060117B 1060117B 1060117B 1060117B 1060117B 1060117B 1060117B 1060117B 1060117B 1060117B 1060117C 1060117C 1060117C 1060117C 1060117C 1060117C 1060117C 1060117C 1060117C 1060117C 1060117C 1060117C 1060117C 1060117C

150.00 150.00 150.00 150.00 150.00 150.00 150.00 150.00 150.00 150.00 150.00 150.00 150.00 150.00 150.00 150.00 150.00 150.00 150.00 150.00 150.00 150.00 150.00 150.00 150.00 150.00 150.00 150.00 150.00 150.00 150.00 150.00 150.00 150.00 150.00 150.00 150.00 150.00 150.00 150.00 150.00 150.00

GSE Environmental, LLC

Page 2 6/14/2017 04:01:09 pm

Roll Allocation List Sales Order Customer Name Project Name

SO081892 Clean Air and Water Systems, LLC CAAWS/Blue Valley Power Additional

Serial number

Item Number

Daily lot

Roll width

Top

Bottom

Clay

Length

502292428 502292429 502292430 502292431 502292432 502292433 502292434 502292435 502292436

BLI07506N03SD00 BLI07506N03SD00 BLI07506N03SD00 BLI07506N03SD00 BLI07506N03SD00 BLI07506N03SD00 BLI07506N03SD00 BLI07506N03SD00 BLI07506N03SD00

27061103 27061103 27061103 27061103 27061103 27061103 27061103 27061103 27061103

15.50 15.50 15.50 15.50 15.50 15.50 15.50 15.50 15.50

2024979643 2024979643 2024979643 2024979643 2024979643 2024979635 2024979635 2024979635 2024979635

2024814992 2024814992 2024814992 2024814992 2024814992 2024814992 2024814992 2024814992 2024814992

1060117C 1060117C 1060117C 1060117C 1060117C 1060117C 1060117C 1060117C 1060117C

150.00 150.00 94.00 150.00 150.00 150.00 92.00 150.00 150.00

GSE 8.2.4021 Rev 01 08/12

GSE Environmental, LLC

Page 1 of 2

ROLL TEST DATA REPORT Report Date: Jun/14/2017 Sales Order No.

Customer Name

Project Location

Product Name

SO−081892

Clean Air and Water Systems, LLC

Independence MO US

BLI−075−06N−03S−D−00

ASTM D6768 Tensile Strength (ppi)

ASTM D6496 Peel Strength (ppi)

ASTM D5993 Clay Content @ 0% Moisture (lbs/sf) Mass Bentonit

ASTM D5993 Clay Content @ 0% Moisture (lbs/sf) Mass GCL

ASTM D5890 Free Swell (ml/2g)

ASTM D2216 Moisture Content (%)

ASTM D5891 Fluid Loss (ml)

502292386

46.9

11.0

0.78

0.86

29.0

10.4

14.2

502292387

46.9

11.0

0.78

0.86

29.0

10.4

14.2

502292388

41.3

11.0

0.82

0.89

29.0

10.1

14.2

502292389

41.3

11.0

0.82

0.89

29.0

10.1

14.2

502292390

41.3

11.0

0.82

0.89

29.0

10.1

14.2

502292391

41.3

11.0

0.82

0.89

29.0

10.1

14.2

502292392

41.3

11.0

0.82

0.89

29.0

10.1

14.2

502292393

41.3

11.0

0.82

0.89

29.0

10.1

14.2

502292394

41.3

11.0

0.82

0.89

29.0

10.1

14.2

502292395

41.3

11.0

0.82

0.89

29.0

10.1

14.2

502292396

41.3

11.0

0.82

0.89

29.0

10.1

14.2

502292397

41.3

11.0

0.82

0.89

29.0

10.1

14.2

502292398

41.3

11.0

0.82

0.89

29.0

10.1

14.2

502292399

41.3

11.0

0.82

0.89

29.0

10.1

14.2

502292400

41.3

11.0

0.82

0.89

29.0

10.1

14.2

502292401

41.3

11.0

0.82

0.89

29.0

10.1

14.2

502292402

41.3

11.0

0.82

0.89

29.0

10.1

14.2

502292403

41.3

11.0

0.82

0.89

29.0

10.1

14.2

502292404

53.0

5.4

0.83

1.01

29.0

9.8

14.2

502292405

53.0

5.4

0.83

1.01

29.0

9.8

14.2

502292406

53.0

5.4

0.83

1.01

29.0

9.8

14.2

502292407

53.0

5.4

0.83

1.01

29.0

9.8

14.2

502292408

53.0

5.4

0.83

1.01

29.0

9.8

14.2

502292409

53.0

5.4

0.83

1.01

29.0

9.8

14.2

502292410

53.0

5.4

0.83

1.01

29.0

9.8

14.2

502292411

53.0

5.4

0.83

1.01

29.0

9.8

14.2

502292412

53.0

5.4

0.83

1.01

29.0

9.8

14.2

502292413

53.0

5.4

0.83

1.01

29.0

9.8

14.2

502292414

53.0

5.4

0.83

1.01

32.5

9.8

12.6

502292415

53.0

5.4

0.83

1.01

32.5

9.8

12.6

502292416

53.0

5.4

0.83

1.01

32.5

9.8

12.6

502292417

53.0

5.4

0.83

1.01

32.5

9.8

12.6

502292418

53.0

5.4

0.83

1.01

32.5

9.8

12.6

502292419

53.0

5.4

0.83

1.01

32.5

9.8

12.6

Roll Number

BOL Number

GSE Environmental, LLC

Page 2 of 2

ROLL TEST DATA REPORT Report Date: Jun/14/2017 Sales Order No.

Customer Name

Project Location

Product Name

SO−081892

Clean Air and Water Systems, LLC

Independence MO US

BLI−075−06N−03S−D−00

ASTM D6768 Tensile Strength (ppi)

ASTM D6496 Peel Strength (ppi)

ASTM D5993 Clay Content @ 0% Moisture (lbs/sf) Mass Bentonit

ASTM D5993 Clay Content @ 0% Moisture (lbs/sf) Mass GCL

ASTM D5890 Free Swell (ml/2g)

ASTM D2216 Moisture Content (%)

ASTM D5891 Fluid Loss (ml)

502292420

50.3

8.2

0.85

0.92

32.5

10.2

12.6

502292421

50.3

8.2

0.85

0.92

32.5

10.2

12.6

502292422

50.3

8.2

0.85

0.92

32.5

10.2

12.6

502292423

50.3

8.2

0.85

0.92

32.5

10.2

12.6

502292424

50.3

8.2

0.85

0.92

32.5

10.2

12.6

502292425

50.3

8.2

0.85

0.92

32.5

10.2

12.6

502292426

50.3

8.2

0.85

0.92

32.5

10.2

12.6

502292427

50.3

8.2

0.85

0.92

32.5

10.2

12.6

502292428

50.3

8.2

0.85

0.92

32.5

10.2

12.6

502292429

50.3

8.2

0.85

0.92

32.5

10.2

12.6

502292430

50.3

8.2

0.85

0.92

32.5

10.2

12.6

502292431

50.3

8.2

0.85

0.92

32.5

10.2

12.6

502292432

50.3

8.2

0.85

0.92

32.5

10.2

12.6

502292433

50.3

8.2

0.85

0.92

32.5

10.2

12.6

502292434

50.3

8.2

0.85

0.92

32.5

10.2

12.6

502292435

50.3

8.2

0.85

0.92

32.5

10.2

12.6

502292436

50.3

8.2

0.85

0.92

32.5

10.2

12.6

Roll Number

BOL Number

Laboratory Manager This test report shall not be reproduced, except in full, without written approval of the laboratory.

19103 Gundle Road Houston, TX 77073

GSE−8.2.4−029 Rev01 − − 02/10

Page 1 of 1

ROLL TEST DATA REPORT Sales Order No.

Customer Name

SO-081892

Roll Number 2024956493 2024979610 2024979615 2024979617 2024979635 2024979643

Laboratory Manager

Clean Air and Water Systems, LLC

Mass per Unit Area ASTM D5261 (oz/yd²)

7.38 7.49 7.05 7.05 7.36 7.35

Project Location

Independence MO US

Report Date:

Product Name

BLI-GEO-NW-0605

14-Jun-2017

BOL Number

Page 1 of 1

ROLL TEST DATA REPORT Sales Order No.

Customer Name

SO-081892

Roll Number 2024854203 2024814992

Laboratory Manager

Clean Air and Water Systems, LLC

Mass per Unit Area ASTM D5261 (oz/yd²)

3.22 3.24

Project Location

Independence MO US

Report Date:

Product Name

BLI-GEO-WS-0305

14-Jun-2017

BOL Number

GSE BENTOLINER CERTIFICATE OF ANALYSIS 2017

SHIPPED FROM:

PRODUCT : NATIONAL® 30

BOL #

LOAD DATE

LOT CODE

B0003589596 B0003589597 B0003589598 B0003589601

05-31-17 06-01-17 06-01-17 06-01-17

1053017D 1060117A 1060117B 1060117C

% MOIST

Mesh % - 200 10 MAX

MEQ

SWELL INDEX

12 MAX

Mesh % + 20 15 MAX

MBC

PWA

18 MAX

70 MIN

25 MIN

750 MIN

8.2 9.7 9.3 9.0

0.16 0.35 0.14 0.11

2.87 2.83 5.09 5.19

14.0 13.6 14.4 14.0

116 118 118 114

33 32 30 29

1032 1008 992 980

BENTONITE PERFORMANCE MINERALS LLC 554 US HWY 212 COLONY PLANT BELLE FOURCHE, S.D. 57717

% MOIST MAY No. of CARS 58

YTD No. of CARS 234

M AVG STD DEV

Mesh % - 200 10 MAX

MBC meq

SWELL INDEX

12 MAX

Mesh % + 20 15 MAX

PWA

18 MAX

70 MIN

25 MIN

750 MIN

9.06 0.71

0.46 0.56

3.32 1.69

13.54 1.00

113.32 5.04

30.58 1.77

986.56 74.57

% MOIST

Mesh % - 200 10 MAX

MBC meq

SWELL INDEX

PWA

12 MAX

Mesh % + 20 15 MAX

18 MAX

70 MIN

25 MIN

750 MIN

8.92 0.71

0.41 0.63

3.40 1.83

13.88 0.91

114.76 5.06

30.86 1.80

991.34 67.96

SOLD TO: GSE CLAY LINING TECHNOLOGY, Co. 3150 FIRST AVENUE SPEARFISH, SD 57783 Attn: Bob Stadler (rstadler@gseworld.com) Chuck Taylor (ctaylor@gseworld.com) Cheryl Hofer (chofer@gseworld.com) (ezimmel@gseworld.com)

SHIPPED TO: GSE CLAY LINING TECHNOLOGY, Co. 3150 FIRST AVENUE SPEARFISH, SD 57783 CC: Thomas Anderson Jason Tawse

Q.A. SUPERVISOR Don Staley/BPM 06/02/17 Prepared by: BAM

Report Date 6/20/2017

Quality Assurance Laboratory Test Results

Project:

CAAWS/Blue Valley Power Additional

Sales Order:

81892

Product:

BLI-075-06N-03S-D-00 BentoLiner NSL

Required Testing:

ASTM D5887 - Standard Test Method for Measurement of Index Flux Through Saturated Geosynthetic Clay Liner Specimens Using a Flexible Wall Permeameter

Frequency:

1/270,000sf

Effective Stress:

5 psi

Daily Lot 27060903 27061003 27061503

Approved By: Date Approved:

Roll Number 502292238 502292357 502292576

Hydraulic Conductivity

Production Date

Index Flux (m³/m²/sec)

6/8/2017 6/12/2017 6/16/2017

4.98E-09 3.66E-09 4.36E-09

1.99E-09 1.60E-09 1.72E-09

Chuck Taylor June 20, 2017

GSE 8.2.4-037 Rev 02 06/07/12

(cm/sec)

D3: CAR GCL Manufacturer’s Certifications

Coal Ash Resistant (CAR) GCL March 1, 2017 revised March 14, 2017

BentoLiner Manufacturing Certification

Sales Order:

81005

Customer:

Clean Air and Water

Project:

CAAWS/Blue Valley Landfill Ph. 2

Product Type:

BLI-075-06N-03S-D-0R Bentoliner NSL CAR

Mauricio Ossa Director of Global Quality

Jane Allen Laboratory Manager

GSE 8.2.4-033

Revision 03 10/23/12

Report Date 3/1/2017

GSE Environmental, LLC

Page 1 3/1/2017 01:26:40 pm

Roll Allocation List Sales Order Customer Name Project Name

SO081005 Clean Air and Water Systems, LLC CAAWS/Blue Valley Landfill Ph. 2

Serial number

Item Number

Roll width

Top

Bottom

Clay

Manufacturing date

Length

BLI07506N03SD0R BLI07506N03SD0R BLI07506N03SD0R BLI07506N03SD0R BLI07506N03SD0R BLI07506N03SD0R BLI07506N03SD0R BLI07506N03SD0R BLI07506N03SD0R BLI07506N03SD0R BLI07506N03SD0R BLI07506N03SD0R BLI07506N03SD0R BLI07506N03SD0R BLI07506N03SD0R BLI07506N03SD0R BLI07506N03SD0R BLI07506N03SD0R BLI07506N03SD0R BLI07506N03SD0R BLI07506N03SD0R BLI07506N03SD0R BLI07506N03SD0R BLI07506N03SD0R BLI07506N03SD0R BLI07506N03SD0R BLI07506N03SD0R BLI07506N03SD0R BLI07506N03SD0R BLI07506N03SD0R BLI07506N03SD0R BLI07506N03SD0R BLI07506N03SD0R BLI07506N03SD0R BLI07506N03SD0R BLI07506N03SD0R

2024759277 2024759277 2024759277 2024759277 2024759277 2024759277 2024759277 2024759277 2024759255 2024759255 2024759255 2024759255 2024759255 2024759255 2024759255 2024759255 2024759255 2024759258 2024759258 2024759258 2024759258 2024759258 2024759258 2024759258 2024759258 2024759258 2024759278 2024759278 2024759278 2024759278 2024759278 2024759278 2024759278 2024759278 2024759247 2024759247

2024699921 2024699921 2024699921 2024699921 2024699921 2024699921 2024699921 2024699921 2024699921 2024699921 2024699921 2024699921 2024699921 2024699921 2024699921 2024699921 2024699921 2024699921 2024699921 2024699921 2024699921 2024699921 2024699921 2024699921 2024699921 2024752848 2024752848 2024752848 2024752848 2024752848 2024752848 2024752848 2024752848 2024752848 2024752848 2024752848

30114172A 30114172A 30114172A 30114172A 30114172A 30114172A 30114172A 30114172A 30114172A 30114172A 30114172A 30114172A 30114172A 30114172A 30114172A 30114172A 30114172A 30114172A 30114172A 30114172A 30114172A 30114172A 30114172A 30114172A 30114172A 30114172B 30114172B 30114172B 30114172B 30114172B 30114172B 30114172B 30114172B 30114172B 30114172B 30114172B

2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/15/2017 2/16/2017 2/16/2017 2/16/2017 2/16/2017 2/16/2017 2/16/2017 2/16/2017 2/16/2017 2/16/2017 2/16/2017 2/16/2017

GSE 8.2.4021 Rev 01 08/12

GSE Environmental, LLC

Page 1 of 2

ROLL TEST DATA REPORT Report Date: Mar/1/2017 Sales Order No.

Customer Name

Project Location

Product Name

SO−081005

Clean Air and Water Systems, LLC

Independence MO US

BLI−075−06N−03S−D−0R

ASTM D6768 Tensile Strength (ppi)

ASTM D6496 Peel Strength (ppi)

ASTM D5993 Clay Content @ 0% Moisture (lbs/sf) Bentonite

ASTM D5993 Clay Content @ 0% Moisture (lbs/sf) GCL

ASTM D5890 Free Swell (ml/2g)

ASTM D2216 Moisture Content (%)

ASTM D5891 Fluid Loss (ml)

135055686

42.0

11.2

0.86

0.94

30.0

9.2

14.6

135055687

41.0

5.6

0.83

0.91

30.0

9.2

14.6

135055688

41.0

5.6

0.83

0.91

30.0

9.2

14.6

135055689

41.0

5.6

0.83

0.91

30.0

9.2

14.6

135055690

41.0

5.6

0.83

0.91

30.0

9.2

14.6

135055691

41.0

5.6

0.83

0.91

30.0

9.2

14.6

135055692

41.0

5.6

0.83

0.91

30.0

9.2

14.6

135055693

41.0

5.6

0.83

0.91

30.0

9.2

14.6

135055694

41.0

5.6

0.83

0.91

30.0

9.2

14.6

135055695

41.0

5.6

0.83

0.91

30.0

9.2

14.6

135055696

41.0

5.6

0.83

0.91

30.0

9.2

14.6

135055697

41.0

5.6

0.83

0.91

30.0

9.2

14.6

135055698

41.0

5.6

0.83

0.91

30.0

9.2

14.6

135055699

41.0

5.6

0.83

0.91

30.0

9.2

14.6

135055700

41.0

5.6

0.83

0.91

30.0

9.2

14.6

135055701

41.0

5.6

0.83

0.91

30.0

9.2

14.6

135055702

41.0

5.6

0.83

0.91

30.0

9.2

14.6

135055703

42.0

7.7

0.84

0.92

30.0

9.2

14.8

135055704

42.0

7.7

0.84

0.92

30.0

9.2

14.8

135055705

42.0

7.7

0.84

0.92

30.0

9.2

14.8

135055706

42.0

7.7

0.84

0.92

30.0

9.2

14.8

135055707

42.0

7.7

0.84

0.92

30.0

9.2

14.6

135055708

42.0

7.7

0.84

0.92

30.0

9.2

14.8

135055709

42.0

7.7

0.84

0.92

30.0

9.2

14.8

135055710

42.0

7.7

0.84

0.92

30.0

9.2

14.8

135055711

42.0

7.7

0.84

0.92

30.0

9.2

14.8

135055712

42.0

7.7

0.84

0.92

30.0

9.2

14.8

135055713

42.0

7.7

0.84

0.92

30.0

9.2

14.8

135055714

42.0

7.7

0.84

0.92

30.0

9.2

14.8

135055715

42.0

7.7

0.84

0.92

30.0

9.2

14.8

135055716

42.0

7.7

0.84

0.92

30.0

9.2

14.8

135055717

42.0

7.7

0.84

0.92

30.0

9.2

14.8

135055718

42.0

7.7

0.84

0.92

30.0

9.2

14.8

135055719

45.0

8.8

0.87

0.94

30.0

9.2

14.8

Roll Number

BOL Number

GSE Environmental, LLC

Page 2 of 2

ROLL TEST DATA REPORT Report Date: Mar/1/2017 Sales Order No.

Customer Name

Project Location

Product Name

SO−081005

Clean Air and Water Systems, LLC

Independence MO US

BLI−075−06N−03S−D−0R

ASTM D6768 Tensile Strength (ppi)

ASTM D6496 Peel Strength (ppi)

ASTM D5993 Clay Content @ 0% Moisture (lbs/sf) Bentonite

ASTM D5993 Clay Content @ 0% Moisture (lbs/sf) GCL

ASTM D5890 Free Swell (ml/2g)

ASTM D2216 Moisture Content (%)

ASTM D5891 Fluid Loss (ml)

135055720

45.0

8.8

0.87

0.94

30.0

9.2

14.8

135055722

45.0

8.8

0.87

0.94

30.0

9.2

14.8

Roll Number

BOL Number

Laboratory Manager This test report shall not be reproduced, except in full, without written approval of the laboratory.

19103 Gundle Road Houston, TX 77073

GSE−8.2.4−029 Rev01 − − 02/10

Page 1 of 1

ROLL TEST DATA REPORT Report Date:

Sales Order No.

Customer Name

SO-081005

Clean Air and Water

Roll Number

2024759247 2024759255 2024759258 2024759277 2024759278

Laboratory Manager

Mass per Unit Area ASTM ASTM D4632 Grab D5261 Strength (oz/yd²) (lbs) MD

7.00 7.70 7.70 7.80 7.80

101 134 134 133 133

ASTM D4632 Grab Strength (lbs) TD

203 254 254 254 254

Project Location Independence MO US

ASTM ASTM D4632 D4632 Grab Grab Elongation Elongation (%) MD (%) TD

171 177 177 173 173

155 168 168 163 163

Product Name BLI-GEO-NW-0605

14-Mar-2017

BOL Number

Page 1 of 1

ROLL TEST DATA REPORT Report Date:

Sales Order No.

Customer Name

SO-081005

Clean Air and Water

Roll Number 2024699921 2024752848

Laboratory Manager

Mass per Unit Area ASTM ASTM D4632 Grab D5261 Strength (oz/yd²) (lbs) MD

3.22 3.20

120 115

ASTM D4632 Grab Strength (lbs) TD

151 149

Project Location Independence MO US

ASTM ASTM D4632 D4632 Grab Grab Elongation Elongation (%) MD (%) TD

16 17

33 35

Product Name BLI-GEO-WS-030

1-Mar-2017

BOL Number

GSE Bentoliner Clay Lining Technology, Co. CERTIFICATE OF ANALYSIS

Shipped From: Bentonite Performance Minerals LLC 789 Hwy. 14-A East Lovell, WY 82431

PRODUCT: National 30

Car Number

Shippers Number

Load Date

Lot Code

Moisture 12 max

F.L. 18 max

MBC MEQ

Free Swell 25 min

PWA 750 min

Mesh % + 20 (15.0 Max)

Mesh % - 200 (10.0 Max)

BNSF 420164

903764158

1/16/2017

30114172

9.5

16.8

765

2.99

0.61

% MOIST 12 max 9.41 0.58

F.L. 18 max 16.40 0.73

MBC MEQ 98.00 1.63

Free Swell 25 min 28.75 2.63

PWA 750 min 757.50 5.80

Mesh % + 20 (15.0 Max) 1.97 0.73

Mesh % - 200 (10.0 Max) 0.84 0.24

YTD NUMBER OF CARS/TRKS 4

M AVG STD DEV

Sold To:

GSE Clay Lining Technology, Co. 1245 Eastland Ave. Kingstree SC 29556

Shipped To:

GSE Clay Lining Technology, Co. 1245 Eastland Ave. Kingstree SC 29556

Attn:

Jodie Williams Stephen Williamson Edgardo Cornejo Ed Zimmel

Q A Supervisor David Hayes 1/16/2017

Report Date 3/7/2017

Quality Assurance Laboratory Test Results

Project:

CAAWS/Blue Valley Landfill Ph2

Sales Order:

81005

Product:

BLI-075-06N-03S-D-0R

Required Testing: ASTM D5887 - Standard Test Method for Measurement of Index Flux Through Saturated Geosynthetic Clay Liner Specimens Using a Flexible Wall Permeameter Frequency

Weekly

Effective Stress: 5 Psi

Roll Number

Production Date

Index Flux (m³/m²/sec)

135055686

2/15/2017

1.10E-09

Approved By: Angela Green Date Approved: March 7, 2017

GSE 8.2.4-037 Rev 02 06/07/12

Hydraulic Conductivity 5.60E-10

(cm/sec)

Large Scale Direct Shear Report Profile:

Testing Date:

7/11/2016

Internal Shear of BentoLiner NSL CAR, Roll # 135048259, Lot #36061203 BLI-075-06N-03S-D-0R

The gripper plate slipped against the GCL with a peak shear stress of 819 psf. There was no internal failure of the GCL.

1000

200 psf Normal Load

800

Shear Stress (psf)

DISPLACEMENT vs SHEAR STRESS Normal Peak L.D. Stress Stress Stress (psf) (psf) (psf) 200 819 645

600

400

200

0.0

0.5

1.0

1.5

2.0

Horizontal Displacement (inches)

TESTING INFORMATION: 1 Tests were conducted in general accordance with ASTM 6243. 2 Tests were conducted with the profile immersed in tap water. 3 The GCL was hydrated for 24 hours at 200 psf before the start of shearing. 4 Testing Speed: 0.04 in/min 5 Large Displacement (LD): 2.0 inches 6 The 200 psf normal load was applied with a dead weight load. TEST ORIENTATION BentoLiner

Load Cell Upper Box

Motion of Lower Box SHEAR DEVICE INFORMATION: 1 2 3 4

Manufactured by GeoSyntec Consultants Upper box dimensions: 12" x 12" x 3" Lower box dimensions: 12" x 16" x 3" Large Displacement: Up to 4"

Lower Box

2.5

Report Date 7/19/2017

BentoLiner Manufacturing Certification

Sales Order:

82487

Customer:

Clean Air and Water Systems, LLC

Project:

CAAW/Blue Valley GCL CAR

Product Type:

BLI-075-06N-03S-D-0R Bentoliner NSL CAR

Mauricio Ossa Director of Global Quality

Jane Allen Laboratory Manager

GSE 8.2.4-033

Revision 03 10/23/12

GSE Environmental, LLC

Page 1 7/19/2017 12:51:11 pm

Roll Allocation List Sales Order Customer Name Project Name

SO082487 Clean Air and Water Systems, LLC CAAW/Blue Valley GCL CAR

Serial number

Item Number

Roll width

Top

Bottom

Clay

Manufacturing date

Length

135059298 135059299 135059300 135059301 135059302 135059303 135059304

BLI07506N03SD0R BLI07506N03SD0R BLI07506N03SD0R BLI07506N03SD0R BLI07506N03SD0R BLI07506N03SD0R BLI07506N03SD0R

15.50 15.50 15.50 15.50 15.50 15.50 15.50

2025017379 2025017379 2025017474 2025017474 2025017474 2025017474 2025017474

21270891 21270891 21270891 21270891 21270891 21270891 21270891

30623171A 30623171A 30623171A 30623171A 30623171A 30623171A 30623171A

7/18/2017 7/18/2017 7/18/2017 7/18/2017 7/18/2017 7/18/2017 7/18/2017

150.00 150.00 150.00 150.00 150.00 150.00 150.00

GSE 8.2.4021 Rev 01 08/12

GSE Environmental, LLC

Page 1 of 1

ROLL TEST DATA REPORT Report Date: Jul/19/2017 Sales Order No.

Customer Name

Project Location

Product Name

SO−082487

Clean Air and Water Systems, LLC

Independence MO US

BLI−075−06N−03S−D−0R

ASTM D4632 Grab Strength (lbs)

ASTM D4632 Peel Strength (lbs)

ASTM D6768 Tensile Strength (ppi)

ASTM D6496 Peel Strength (ppi)

ASTM D5993 Clay Content @ 0% Moisture (lbs/sf) Bentonite

ASTM D5993 Clay Content @ 0% Moisture (lbs/sf) GCL

ASTM D5890 Free Swell (ml/2g)

ASTM D2216 Moisture Content (%)

ASTM D5891 Fluid Loss (ml)

135059298

177

45.0

4.9

0.77

0.87

28.0

8.8

15.6

135059299

183

45.0

5.4

0.80

0.88

28.0

8.8

15.6

135059300

183

45.0

5.4

0.80

0.88

28.0

8.8

15.6

135059301

183

45.0

5.4

0.80

0.88

28.0

8.8

15.6

135059302

183

45.0

5.4

0.80

0.88

28.0

8.8

15.6

135059303

183

45.0

5.4

0.80

0.88

28.0

8.8

15.6

135059304

183

45.0

5.4

0.80

0.88

28.0

8.8

15.6

Roll Number

BOL Number

Laboratory Manager This test report shall not be reproduced, except in full, without written approval of the laboratory.

19103 Gundle Road Houston, TX 77073

GSE−8.2.4−029 Rev01 − − 02/10

GSE Lining Technology, LLC.

ROLL TEST DATA REPORT Report Date:

ROLL #

2025017379 2025017474

Mass per Unit Area ASTM D5261 (oz/yd²) 7.4 7.6

Jul/19/2017

Sales Order No.

Customer Name

Project Location

Product Name

SO-082487

Clean Air and Water Systems, LLC

Independence MO US

BLI-GEO-NW-0605

BOL Number

ASTM ASTM D4632 ASTM ASTM D4632 D4632 Elongation D4632 Grab Grab Strength Elongation @ Break Strength (lbs) MD @ Break (%) MD (lbs) TD (%) TD 148 150

112 133

155 141

227 243

Laboratory Supervisor: Caleb Andrews This test report shall not be reproduced, except in full, without written approval of the Laboratory.

GSE-8.2.4-029 Rev01--02/10

GSE Lining Technology, LLC.

ROLL TEST DATA REPORT Report Date:

ROLL #

21270891

Mass per Unit Area ASTM D5261 (oz/yd²) 3.8

Jul/19/2017

Sales Order No.

Customer Name

Project Location

Product Name

SO-082487

Clean Air and Water Systems, LLC

Independence MO US

BLI-GEO-WS-030

BOL Number

ASTM ASTM D4632 ASTM ASTM D4632 D4632 Elongation D4632 Grab Grab Strength Elongation @ Break Strength (lbs) MD @ Break (%) MD (lbs) TD (%) TD 27

260

811

Laboratory Supervisor: Caleb Andrews This test report shall not be reproduced, except in full, without written approval of the Laboratory.

GSE-8.2.4-029 Rev01--02/10

GSE Bentoliner Clay Lining Technology, Co. CERTIFICATE OF ANALYSIS

Shipped From: Bentonite Performance Minerals LLC 789 Hwy. 14-A East Lovell, WY 82431

PRODUCT: National 30

Car Number

Shippers Number

Load Date

Lot Code

Moisture 12 max

F.L. 18 max

MBC MEQ

Free Swell 25 min

PWA 750 min

Mesh % + 20 (15.0 Max)

Mesh % - 200 (10.0 Max)

BNSF 422533 BNSF 421026

904114722 904114723

6/26/2017 6/26/2017

30622171 30623171

9.2 9.2

16.4 16.0

98 98

28 29

771 765

1.97 2.40

2.43 2.64

% MOIST 12 max 9.12 0.35

F.L. 18 max 16.14 0.62

MBC MEQ 98.05 2.07

Free Swell 25 min 27.34 1.41

PWA 750 min 784.39 25.57

Mesh % + 20 (15.0 Max) 2.27 0.62

Mesh % - 200 (10.0 Max) 0.91 0.80

YTD NUMBER OF CARS/TRKS 41

M AVG STD DEV

Sold To:

GSE Clay Lining Technology, Co. 1245 Eastland Ave. Kingstree SC 29556

Shipped To:

GSE Clay Lining Technology, Co. 1245 Eastland Ave. Kingstree SC 29556

Attn:

Jodie Williams Stephen Williamson Edgardo Cornejo Ed Zimmel

Q A Supervisor David Hayes 6/26/2017

Large Scale Direct Shear Report Profile:

Testing Date:

3/3/2017

Internal Shear of BentoLiner NSL CAR, Roll # 135055686, Lot #37020715 BLI-075-06N-03S-D-0R

The gripper plate slipped against the GCL with a peak shear stress of 762 psf. There was no internal failure of the GCL.

1000

200 psf Normal Load

800

Shear Stress (psf)

DISPLACEMENT vs SHEAR STRESS Normal Peak L.D. Stress Stress Stress (psf) (psf) (psf) 200 762 754

600

400

200

0.0

0.5

1.0

1.5

2.0

Horizontal Displacement (inches)

Load Cell Upper Box

Motion of Lower Box SHEAR DEVICE INFORMATION: 1 2 3 4

Manufactured by GeoSyntec Consultants Upper box dimensions: 12" x 12" x 3" Lower box dimensions: 12" x 16" x 3" Large Displacement: Up to 4"

Lower Box

2.5

D4: Panel Map

IPL – Blue Valley Power Station North Fly Ash Pond Geosynthetic Panel Map

Outlet without CAR GCL and Pressure Relief System

Provided by Radmacher Brothers Excavating Co., Inc.

Outlet with CAR GCL and Pressure Relief System

IPL – Blue Valley Power Station Southern Ash Ponds Geosynthetic Panel Map Provided by Radmacher Brothers Excavating Co., Inc.

Outlet with CAR GCL and Pressure Relief System

Appendix E Final Cover Soils E1: Pre-Construction Topsoil Laboratory Testing and Mixing Plan E2: Topsoil Field Testing E3: Sand Field Testing E4: Soil Analysis and Fertilization Recommendations E5: Thickness Verification E6: Seeding Plan

E1: Pre-Construction Topsoil Laboratory Testing and Mixing Plan

7311 W. 130 t h Street Suite 100 Overland Park, KS 66213

Environmental Consultants and Contractors

913 681-0030 FAX 913 681-0012 www.scsengineers.com

Submittal No. 01 Date:

July 8, 2016

Project:

IPL Blue Valley Power Station – Ash Impoundment Closure

Owner:

Independence Power and Light

SCS Project No.:

27215142.00

Contractor:

Radmacher Brothers Excavating Company, Inc.

Contractor Project No. :

2016-01

Drawing Reference:

Not Specified

Specification Reference:

Not Specified

A. INQUIRY BY CONTRACTOR: (Written description of inquiry – attach sketches as necessary) Contractor submitted a set of laboratory data for the proposed borrow source on June 30, 2016 for review. The laboratory test report was prepared by Kruger Technologies, Inc. and dated April 15, 2016 includes results for the borrow material and the topsoil from the borrow source. A copy of the submitted laboratory data is included at the end of this submittal. B. REQUESTED RESPONSE TIME/DATE: C. SUBMITTED BY:

Kathy Kee; cc: Robert C. Rodmacher

D. ENGINEERS RESPONSE: Approved Approved with noted exceptions, Resubmittal Not Required Approved with noted exceptions, Submit Additional Information Revise and Resubmit Entire Submittal Not Approved, Revise and Resubmit Entire Submittal Reviewed for Coordination or Information Only

SCS reviewed the submitted soil data. The three soil samples appear to be capable of achieving the required 1x10-7 centimeter per second (cm/s) hydraulic conductivity for samples remolded at 95% maximum dry density with +2% of optimum moisture content. The engineer has the following comments: 1. The material appears to be suitable for the barrier soil, but please submit the hydraulic conductivity test reports.

Submittal No. 01

Page 1 of 2

IPL BVPS – Ash Impoundment Closure

2. Material does not appear to be satisfactory for the vegetative layer. 3. Any comments on acceptability of the soil materials does not relieve the contractor of responsibility to meet the project specifications. Please give me a call if you have any questions pertaining to this project. Office: 913-681-0030

REVIEWED BY: Patrick Goeke Renee Trenshaw

Submittal No. 01

Page 2 of 2

7311 W. 130 t h Street Suite 100 Overland Park, KS 66213

Environmental Consultants and Contractors

913 681-0030 FAX 913 681-0012 www.scsengineers.com

Submittal No. 18 Date:

October 12, 2016

Project:

IPL Blue Valley Power Station – Ash Impoundment Closure

Owner:

Independence Power and Light

SCS Project No.:

27215142.00

Contractor:

Radmacher Brothers Excavating Company, Inc.

Contractor Project No. :

2016-01

Drawing Reference:

Not Specified

Specification Reference:

310513 - Earthwork

A. INQUIRY BY CONTRACTOR: (Written description of inquiry – attach sketches as necessary) Contractor submitted a transmittal dated September 26, 2016 proposing a methodology of construction for the topsoil layer using two separate material to create a composite topsoil material. Accompanying this submittal was two sets of laboratory analysis for two separate borrow sites referred to as the Vance site and Radmacher site. Discussion about this submittal occurred in Progress Meeting #3 on October 3, 2016. SCS requested additional laboratory data to demonstrate the proposed methodology will provide a suitable topsoil material. Contractor submitted another transmittal dated October 10, 2016 discussing the proposed methodology with accompanying laboratory analysis for the blended borrow material consisting of 50% Vance and 50% Radmacher borrow materials. Contractor also provided SCS with a sample of this blended material. B. REQUESTED RESPONSE TIME/DATE:

C. SUBMITTED BY: Robert Radmacher D. ENGINEERS RESPONSE: Approved Approved with noted exceptions, Resubmittal Not Required Approved with noted exceptions, Submit Additional Information Revise and Resubmit Entire Submittal Not Approved, Revise and Resubmit Entire Submittal Reviewed for Coordination or Information Only

SCS received the above mentioned submittals, laboratory analysis, and soil sample for review. This blended soil consisting of the 50% Vance and 50% Radmacher does not meet the

Submittal No. 18

Page 1 of 2

IPL BVPS – Ash Impoundment Closure

specifications outlined in 310513, 2.4 due to a lower sand content and the lower organic material. However, the lower organic material could be improved with appropriate soil amendments throughout the soil. The lower sand is acceptable to SCS based on current information presented and with compensation with soil amendments as mentioned in the October 10, 2016 letter. Please note that SCS is under the impression that the soil amendments to be added to improve the organic matter will be more than just the surface application of fertilizer specified in Section 329219 for the Seeding Specification. Soil amendment ratios and types will need to be verified after nutrient testing has been completed and should include mixture into the majority of the topsoil layer. Final approval of the topsoil will be provided after SCS reviews the additional information on the fertilizer and amendments proposed by the contractor. Regarding the methodology to achieve this in the field, SCS is agreeable to the placement of the Radmacher soil followed by the Vance soil, and tilling it to a depth of 10 inches to create this topsoil. However, SCS requests this soil layering to be of equal parts Vance and Radmacher. The intent is to allow for a full soil layer to have a similar composition as the laboratory results, particularly since the sand content is slightly lower than specified. For example, if 8 inches of Radmacher soil are placed, then 8 inches of Vance material will be placed and then tilled the proposed 10 inches. Even though SCS reviewed the proposed methodology, it is ultimately the Contractor’s responsibility to the means and methods of achieving the topsoil material described above and provided with the October 10, 2016 laboratory results. The placement of the material should be done in accordance with the Specifications (310513, 3.3) and shall not damage the underlying geosynthetic materials. SCS will collect samples of the topsoil placement in the field to verify this topsoil placement method will provide a similar material as that of the provided blended sample. SCS approves the use of this 50% Vance and 50% Radmacher material as the topsoil in the final cover system assuming that the appropriate soil amendments are added to the material within an appropriate timeframe prior to seeding. Please provide the requested laboratory results for the nutrient testing (buffer pH, Nitrogen, Phosphorus, Potassium) once it becomes available in addition to testing required in accordance with Section 310513, 2.4, C. Please give me a call if you have any questions pertaining to this project. Office: 913-681-0030 REVIEWED BY: Patrick Goeke Renee Trenshaw

Submittal No. 18

Page 2 of 2

7311 W. 130 t h Street Suite 100 Overland Park, KS 66213

Environmental Consultants and Contractors

913 681-0030 FAX 913 681-0012 www.scsengineers.com

Submittal No. 19 Date:

December 22, 2016

Project:

IPL Blue Valley Power Station – Ash Impoundment Closure

Owner:

Independence Power and Light

SCS Project No.:

27215142.00

Contractor:

Radmacher Brothers Excavating Company, Inc.

Contractor Project No. :

2016-01

Drawing Reference:

Not Specified

Specification Reference:

310513 – Earthwork, 329219 - Seeding

A. INQUIRY BY CONTRACTOR: (Written description of inquiry – attach sketches as necessary) In response to SCS’s Submittal No. 18 requesting nutrient testing to be provided, Radmacher provided nutrient testing for the topsoil material in a Transmittal dated December 6, 2016 at Progress Meeting #5. A copy of this transmittal is included at the end of this submittal. B. REQUESTED RESPONSE TIME/DATE:

C. SUBMITTED BY: Robert Radmacher and Ed Andres D. ENGINEERS RESPONSE: Approved Approved with noted exceptions, Resubmittal Not Required Approved with noted exceptions, Submit Additional Information Revise and Resubmit Entire Submittal Not Approved, Revise and Resubmit Entire Submittal Reviewed for Coordination or Information Only

SCS received the above mentioned transmittals. Please confirm that the soil sample submitted for nutrient testing is the 50% Vance and 50% Radmacher topsoil mix previously discussed and approved in Submittal #18. The pH has increased and the organic matter content has decreased when compared to the prior topsoil laboratory data and SCS would like confirmation of the sample source for the topsoil nutrient analysis. Assuming the sample source is the 50% Vance and 50% Radmacher mix, the nutrient levels provided with the nutrient recommendations appear to be generally acceptable to grow the desired vegetation, as long as the appropriate amendments are added. Based on material

Submittal No. 19

Page 1 of 2

IPL BVPS – Ash Impoundment Closure

performance in the field, SCS may require additional nutrient testing in the field during construction to verify the nutrient levels in the soil are adequate for supporting vegetation. As indicated in Submittal #18, SCS is under the impression that the soil amendments to be added to improve the organic matter will be more than just the surface application of chemical fertilizer. Please inform SCS of the plan to increase the organic matter in the soil prior to adding the amendments. Even though SCS reviewed the proposed methodology (Submittal #18) and the nutrient testing (Submittal #19), it is ultimately the Contractor’s responsibility to handle the means and methods of achieving the topsoil material. Please give me a call if you have any questions pertaining to this project. Office: 913-681-0030 REVIEWED BY: Patrick Goeke Renee Trenshaw

Submittal No. 19

Page 2 of 2

7311 W. 130 t h Street Suite 100 Overland Park, KS 66213

Environmental Consultants and Contractors

913 681-0030 FAX 913 681-0012 www.scsengineers.com

Submittal No. 24 Date:

September 5, 2017

Project:

IPL Blue Valley Power Station – Ash Impoundment Closure

Owner:

Independence Power and Light

SCS Project No.:

27215142.00

Contractor:

Radmacher Brothers Excavating Company, Inc.

Contractor Project No. :

2016-01

Drawing Reference:

Not Specified

Specification Reference:

310513 - Earthwork

A. INQUIRY BY CONTRACTOR: (Written description of inquiry – attach sketches as necessary) In response to SCS’ request during Progress Meeting #12, the contractor submitted their proposed procedures for the topsoil application and mixing a in a transmittal dated August 9, 2017. B. REQUESTED RESPONSE TIME/DATE:

SCS received the above mentioned submittals. SCS is agreeable to the placement procedure provided by Radmacher in the August 9, 2017 submittal. Discing of the material to break up any clods of Radmacher soil will be required even if the soil passes the grain size analyses. Even though SCS reviewed the proposed methodology, it is ultimately the Contractor’s responsibility to the means and methods of achieving the topsoil material described above and provided with the October 10, 2016 laboratory results. The placement of the material should be done in accordance with the Specifications (310513, 3.3) and shall not damage the underlying geosynthetic materials.

Submittal No. 18

Page 1 of 2

IPL BVPS – Ash Impoundment Closure

Radmacher to submit grain size analyses to document material meets gradation specifications. Please note that SCS is under the impression that the soil amendments to be added to improve the organic matter will be more than just the surface application of fertilizer specified in Section 329219 for the Seeding Specification. Soil amendment ratios and types will need to be verified after nutrient testing has been completed and should include mixture into the majority of the topsoil layer. Final approval of the topsoil will be provided after SCS reviews the additional information. Please provide the requested laboratory results for the nutrient testing (buffer pH, Nitrogen, Phosphorus, Potassium) once it becomes available in addition to testing required in accordance with Section 310513, 2.4, C. Please give me a call if you have any questions pertaining to this project. Office: 913-681-0030 REVIEWED BY: Patrick Goeke

Submittal No. 18

Page 2 of 2

E2: Topsoil Field Testing

E3: Sand Field Testing

E4: Soil Analysis and Fertilization Recommendations

REPORT NUMBER

17-240-0122 COMPLETED DATE

PAGE 1/1

ACCOUNT

TODAY'S DATE

29731

Sep 11, 2017 RECEIVED DATE Aug 28, 2017

Sep 11, 2017 % 6WUHHW 2PDKD 1HEUDVND ZZZ PLGZHVWODEV FRP IDENTIFICATION

KRUGER TECHNOLOGIES INC BOB DOWNS 8271 MELROSE DR LENEXA KS 66214-1625

PO 216063C INDEPENDENCE POWER & LIGHT ASH IMPROVEMENT

SOIL ANALYSIS REPORT NEUTRAL AMMONIUM ACETATE (EXCHANGEABLE)

ORGANIC LAB SAMPLE NUMBER IDENTIFICATION MATTER L .O. I.

*316* 07691 1*see below

(WEAK BRAY) 1:7

percent RATE

ppm

0.7 VL

13 L

RATE

OLSEN

(STRONG BRAY) 1:7

ppm

POTASSIUM MAGNESIUM

RATE

BICARBONATE

SURFACE

58 H

RATE

9 L

ppm

RATE

105 L

ppm

RATE

ppm

lbs/A

4 0-6

ppm

lbs/A

ppm

lbs/A

depth (in)

ppm

RATE

ppm

208 H 2543 VH

SUBSOIL 2 depth (in)

SODIUM

pH SOIL pH

P ppm

SUBSOIL 1 depth (in)

CALCIUM

NITRATE-N (FIA)

LAB NUMBER

*316* 07691

PHOSPHORUS

Total lbs/A

1:1

RATE

CATION EXCHANGE CAPACITY C.E.C.

PERCENT BASE SATURATION (COMPUTED) % K

% Mg

% Ca

8.4

14.9

1.8 11.6 85.4

ZINC

MANGANESE

IRON

COPPER

BORON

ICAP

DTPA

SORB. DTPA

RATE

ppm

28 VH 0.8

RATE

ppm

RATE

1 VL

% H

% Na

0.0

1.2

meq/100g

SULFUR

ppm

BUFFER INDEX

EXCESS LIME RATE

ppm

RATE

ppm

RATE

ppm

RATE

0.7

0.3 VL L

The elemental sulfur is suggested as an amendment to lower the pH to a 7.5 1* TOPSOIL LOCATION 1; The above analytical results apply only to the sample(s) submitted. Samples are retained a maximum of 30 days. 6\Y YLWVY[Z HUK SL[[LYZ HYL MVY [OL L_JS\ZP]L HUK JVUÄKLU[PHS \ZL VM V\Y JSPLU[Z HUK TH` UV[ IL YLWYVK\JLK PU ^OVSL VY PU WHY[ UVY TH` HU` YLMLYLUJL IL THKL [V [OL ^VYR [OL YLZ\S[Z VY [OL JVTWHU` PU HU` HK]LY[PZPUN UL^Z YLSLHZL VY V[OLY W\ISPJ HUUV\UJLTLU[Z ^P[OV\[ VI[HPUPUN V\Y WYPVY ^YP[[LU H\[OVYPaH[PVU

SOLUBLE SALTS 1:1

mmhos/ cm RATE

0.3

REV. 12/03

REPORT NUMBER

PAGE 1/1

17-240-0122 COMPLETED DATE

ACCOUNT

Sep 11, 2017 RECEIVED DATE Aug 28, 2017

TODAY'S DATE

29731

Sep 11, 2017 % 6WUHHW 2PDKD 1HEUDVND ZZZ PLGZHVWODEV FRP IDENTIFICATION

KRUGER TECHNOLOGIES INC BOB DOWNS 8271 MELROSE DR LENEXA KS 66214-1625

PO 216063C INDEPENDENCE POWER & LIGHT ASH IMPROVEMENT

SOIL FERTILITY RECOMMENDATIONS (POUNDS PER ACRE) YOUR SAMPLE NUMBER

INTENDED CROP

YIELD GOAL

PREVIOUS CROP

(LAB NUMBER) TOPSOIL LOCATION LAWN 1

BEST UNKNOWN

SOIL AMENDMENTS LIME LBS/A OF

LIME TON

GYPSUM TONS/A

ELEMENTAL SULFUR LBS/A

1000

P2 O 5

K2O

NITROGEN

PHOSPHATE

POTASH

MAGNESIUM

SULFUR

ZINC

MANGANESE

IRON

COPPER

BORON

165

2.0

3.1

(31607691)

1* TOPSOIL LOCATION 1;

REV. 12/03

The above analytical results apply only to the sample(s) submitted. Samples are retained a maximum of 30 days. 6\Y YLWVY[Z HUK SL[[LYZ HYL MVY [OL L_JS\ZP]L HUK JVUÄKLU[PHS \ZL VM V\Y JSPLU[Z HUK TH` UV[ IL YLWYVK\JLK PU ^OVSL VY PU WHY[ UVY TH` HU` YLMLYLUJL IL THKL [V [OL ^VYR [OL YLZ\S[Z VY [OL JVTWHU` PU HU` HK]LY[PZPUN UL^Z YLSLHZL VY V[OLY W\ISPJ HUUV\UJLTLU[Z ^P[OV\[ VI[HPUPUN V\Y WYPVY ^YP[[LU H\[OVYPaH[PVU

REPORT NUMBER

17-240-0122 COMPLETED DATE

PAGE 1/1

ACCOUNT

TODAY'S DATE

29731

Sep 11, 2017 RECEIVED DATE Aug 28, 2017

Sep 11, 2017 % 6WUHHW 2PDKD 1HEUDVND ZZZ PLGZHVWODEV FRP IDENTIFICATION

KRUGER TECHNOLOGIES INC BOB DOWNS 8271 MELROSE DR LENEXA KS 66214-1625

ANALYTICAL LABORATORY FINDINGS SAMPLE IDENTIFICATION LABORATORY NUMBER

ANALYTE

UNITS

PO 216063C INDEPENDENCE POWER & LIGHT ASH IMPROVEMENT

LAWN AND GARDEN MIDWEST SUGGESTIONS FOR LAWN

TOPSOIL LOCATION 1 31607691 RESULTS

LOW

POUNDS PER MEDIUM

OPTIMUM

V. HIGH

100 sq. ft.

1000 sq. ft.

Acre

SUGGESTED FERTILITY GUIDELINES

NITROGEN %

ORGANIC MATTER NITRATE-N PHOSPHORUS

ppm

POTASSIUM

ppm

MAGNESIUM

ppm

0.7 2 13 105 208

NITROGEN (N)

0.38

3.79

165

PHOSPHATE (P2O5) POTASH (K2O) MAGNESIUM (Mg)

0.14 0.16 --

1.38 1.61 --

60 70 --

28 0.8 1 10 0.7 0.3

SULFUR (S) ZINC (Zn) MANGANESE (Mn) IRON (Fe) COPPER (Cu) BORON (B)

-0.00 0.01 ----

-0.05 0.07 ----

-2.0 3.1 ----

The elemental sulfur is suggested as an amendment to lower the pH to a 7.5 1* TOPSOIL LOCATION 1;

MICRONUTRIENTS SULFUR

ppm

ZINC

ppm

MANGANESE

ppm

IRON

ppm

COPPER

ppm

BORON

ppm

CALCIUM

ppm

SODIUM

ppm

SOLUBLE SALTS

mmhos/ cm

EXCESS LIME RATE pH

2543 40 0.3 L 8.4

ELEMENTAL SULFUR

14.9

GYPSUM

Surface Nitrate Depth: 0-6

SUGGESTED AMENDMENT GUIDELINES LIME 2.3

1000

BUFFER INDEX C.E.C.

meq/ 100g

REPORT NUMBER

17-240-0123 COMPLETED DATE

PAGE 1/1

ACCOUNT

TODAY'S DATE

29731

Sep 11, 2017 RECEIVED DATE Aug 28, 2017

Sep 11, 2017 % 6WUHHW 2PDKD 1HEUDVND ZZZ PLGZHVWODEV FRP IDENTIFICATION

KRUGER TECHNOLOGIES INC BOB DOWNS 8271 MELROSE DR LENEXA KS 66214-1625

INDEPENDENCE POWER & LIGHT ASH IMPROVEMENT

SOIL ANALYSIS REPORT NEUTRAL AMMONIUM ACETATE (EXCHANGEABLE)

ORGANIC LAB SAMPLE NUMBER IDENTIFICATION MATTER L .O. I.

*316* 07692 1*see below

(WEAK BRAY) 1:7

percent RATE

ppm

0.6 VL

20 M

RATE

OLSEN

(STRONG BRAY) 1:7

ppm

POTASSIUM MAGNESIUM

RATE

52 H

BICARBONATE

SURFACE

RATE

11 M

ppm

RATE

156 H

ppm

RATE

ppm

lbs/A

2 0-6

ppm

lbs/A

ppm

lbs/A

depth (in)

ppm

RATE

ppm

212 H 2387 VH

SUBSOIL 2 depth (in)

SODIUM

pH SOIL pH

P ppm

SUBSOIL 1 depth (in)

CALCIUM

NITRATE-N (FIA)

LAB NUMBER

*316* 07692

PHOSPHORUS

Total lbs/A

1:1

RATE

CATION EXCHANGE CAPACITY C.E.C.

PERCENT BASE SATURATION (COMPUTED) % K

% Mg

% Ca

8.5

14.3

2.8 12.4 83.6

ZINC

MANGANESE

IRON

COPPER

BORON

ICAP

DTPA

SORB. DTPA

RATE

ppm

RATE

0.6

ppm

RATE

2 VL

% H

% Na

0.0

1.2

meq/100g

SULFUR

ppm

BUFFER INDEX

ppm

EXCESS LIME RATE

RATE

ppm

RATE

ppm

RATE

0.5

0.3 VL L

The elemental sulfur is suggested as an amendment to lower the pH to a 7.5 1* TOPSOIL LOCATION 2; The above analytical results apply only to the sample(s) submitted. Samples are retained a maximum of 30 days. 6\Y YLWVY[Z HUK SL[[LYZ HYL MVY [OL L_JS\ZP]L HUK JVUÄKLU[PHS \ZL VM V\Y JSPLU[Z HUK TH` UV[ IL YLWYVK\JLK PU ^OVSL VY PU WHY[ UVY TH` HU` YLMLYLUJL IL THKL [V [OL ^VYR [OL YLZ\S[Z VY [OL JVTWHU` PU HU` HK]LY[PZPUN UL^Z YLSLHZL VY V[OLY W\ISPJ HUUV\UJLTLU[Z ^P[OV\[ VI[HPUPUN V\Y WYPVY ^YP[[LU H\[OVYPaH[PVU

SOLUBLE SALTS 1:1

mmhos/ cm RATE

0.2

REV. 12/03

REPORT NUMBER

PAGE 1/1

17-240-0123 COMPLETED DATE

ACCOUNT

Sep 11, 2017 RECEIVED DATE Aug 28, 2017

TODAY'S DATE

29731

Sep 11, 2017 % 6WUHHW 2PDKD 1HEUDVND ZZZ PLGZHVWODEV FRP IDENTIFICATION

KRUGER TECHNOLOGIES INC BOB DOWNS 8271 MELROSE DR LENEXA KS 66214-1625

INDEPENDENCE POWER & LIGHT ASH IMPROVEMENT

SOIL FERTILITY RECOMMENDATIONS (POUNDS PER ACRE) YOUR SAMPLE NUMBER

INTENDED CROP

YIELD GOAL

PREVIOUS CROP

(LAB NUMBER) TOPSOIL LOCATION LAWN 2

BEST UNKNOWN

SOIL AMENDMENTS LIME LBS/A OF

LIME TON

GYPSUM TONS/A

ELEMENTAL SULFUR LBS/A

1000

P2 O 5

K2O

NITROGEN

PHOSPHATE

POTASH

MAGNESIUM

SULFUR

ZINC

MANGANESE

IRON

COPPER

BORON

170

2.4

2.8

0.9

(31607692)

1* TOPSOIL LOCATION 2;

REV. 12/03

REPORT NUMBER

17-240-0123 COMPLETED DATE

PAGE 1/1

ACCOUNT

TODAY'S DATE

29731

Sep 11, 2017 RECEIVED DATE Aug 28, 2017

Sep 11, 2017 % 6WUHHW 2PDKD 1HEUDVND ZZZ PLGZHVWODEV FRP IDENTIFICATION

KRUGER TECHNOLOGIES INC BOB DOWNS 8271 MELROSE DR LENEXA KS 66214-1625

ANALYTICAL LABORATORY FINDINGS SAMPLE IDENTIFICATION LABORATORY NUMBER

ANALYTE

UNITS

INDEPENDENCE POWER & LIGHT ASH IMPROVEMENT

LAWN AND GARDEN MIDWEST SUGGESTIONS FOR LAWN

TOPSOIL LOCATION 2 31607692 RESULTS

LOW

POUNDS PER MEDIUM

OPTIMUM

V. HIGH

100 sq. ft.

1000 sq. ft.

Acre

SUGGESTED FERTILITY GUIDELINES

NITROGEN %

ORGANIC MATTER NITRATE-N PHOSPHORUS

ppm

POTASSIUM

ppm

MAGNESIUM

ppm

0.6 1 15 156 212

NITROGEN (N)

0.39

3.90

170

PHOSPHATE (P2O5) POTASH (K2O) MAGNESIUM (Mg)

0.09 0.11 --

0.92 1.15 --

40 50 --

20 0.6 2 9 0.5 0.3

SULFUR (S) ZINC (Zn) MANGANESE (Mn) IRON (Fe) COPPER (Cu) BORON (B)

-0.01 0.01 -0.00 --

-0.06 0.06 -0.02 --

-2.4 2.8 -0.9 --

The elemental sulfur is suggested as an amendment to lower the pH to a 7.5 1* TOPSOIL LOCATION 2;

MICRONUTRIENTS SULFUR

ppm

ZINC

ppm

MANGANESE

ppm

IRON

ppm

COPPER

ppm

BORON

ppm

CALCIUM

ppm

SODIUM

ppm

SOLUBLE SALTS

mmhos/ cm

EXCESS LIME RATE pH

2387 38 0.2 L 8.5

ELEMENTAL SULFUR

14.3

GYPSUM

Surface Nitrate Depth: 0-6

SUGGESTED AMENDMENT GUIDELINES LIME 2.3

1000

BUFFER INDEX C.E.C.

meq/ 100g

E5: Thickness Verification

BOTTOM ASH POND (BA POND) 7311 W. 130th St, Ste. 100 Overland Park, Kansas 66213 PH. (913) 681-0030 FAX. (913) 681-0012

INDEPENDENCE, MISSOURI

BLUE VALLEY POWER STATION

CLOSURE REPORT

COVER SOIL TEST PITS FOR THICKNESS VERIFICATION

SOUTH FLY ASH POND (SFA POND)

SCS ENGINEERS

INDEPENDENCE POWER & LIGHT

N:\City of Independence\Independence Power & Light\Projects\27215142.00 - Ash Pond Closure Design\Closure Report\Appendix E - Soils+Seeding\D5 - Thickness Verification\Topsoil Thickness Verification Locations SCS Figure.dwg

NOTES: 1. TEST PIT LOCATIONS STAKED AND PROVIDED BY CONTRACTOR. 2. THICKNESSES COLLECTED BY SCS ENGINEERS. LEGEND APPROXIMATE CCR IMPOUNDMENT BOUNDARY

TEST PIT LOCATION

NORTH FLY ASH POND (NFA POND)

North Fly Ash Pond Thickness Verification August 8, 2017 Thickness in inches

Location

Topsoil

Clay

Total Soil Above GCL

A1 B B2 B4 C1 C3 D D2 D4 D5 E1 E3 E4 F F2 F5 G G3 G4 G6 H2 H5 I1 I3 Average Minimum

11.5 12 13 11.5 13 10.5 12 12 11.5 12 12 11 12 14 11.5 13 12 13 11.5 11 12.5 11.5 12 12 12.0 10.5

16.5 12 + 13 11.5 17 13.5 12 + 8 11.5 14 13 15 12 24 12.5 14 13 15 12.5 13 16.5 11.5 17 13 14.0 8.0

28 24 + 26 23 30 24 24 + 20 23 26 25 26 24 38 24 27 25 28 24 24 29 23 29 25 26.0 20.0

= mixture of clay and sand per Contractor submittal = layer of clay without sand portion Requirement: 12 inches total topsoil thickness Locations generally meet or exceed contract requirement

Southeast Fly Ash Pond Thickness Verification November 2, 2017 Thickness in inches

Location

Topsoil

Clay

Total Soil Above GCL

E10 E6 E7 E9 F10 F4 F7 F8 F9 G1 G2 G4 G5 G6 G9 H2 H6 H7 I2 I3 I5a Average Minimum

12 13 13 12 12 12 12 12.5 12 13 12 14 12.5 12 12 12 12.5 12 13 12 13 12.4 12.0

12 15 15 23 16 16 17 15.5 12 19 13 15 16.5 19 13 15 16.5 13 14 20 27 16.3 12.0

24 28 28 35 28 28 29 28 24 32 25 29 29 31 25 27 29 25 27 32 40 28.7 24.0

= mixture of clay and sand per Contractor submittal = layer of clay without sand portion Requirement: 12 inches total topsoil thickness Locations generally meet or exceed contract requirement

Bottom Ash Pond Thickness Verification November 2, 2017 Thickness in inches

Location

Topsoil

Clay

Total Soil Above GCL

B7 C4a C5 C6 C7 D2 D7 E2 E3 E4 Average Minimum

12.5 12 13 12 12 15 12 12 12 12 12.5 12.0

12.5 16 14 14 14 15 16 13 14 14 14.3 12.5

25 28 27 26 26 30 28 25 26 26 26.7 25.0

= mixture of clay and sand per Contractor submittal = layer of clay without sand portion Requirement: 12 inches total topsoil thickness Locations generally meet or exceed contract requirement

E6: Seeding Plan

13586 Cameron Rd. Excelsior Springs, MO 64024 P: (816) 324-3772 F: (816) 324-5739

September 12, 2017 Blue Valley Ash Pond Closure Independence, Missouri 1601-1 Pine Valley Contracting, Inc., subcontractor for Radmacher Brothers Excavating Company, Inc. will seed the Project Blue Valley Ash Pond Closure located in Jackson County, Missouri and owned by Independence Power & Light in accordance with the specifications listed in the SCS AQUATERRA (Section 329219). Listed below are the products, quantities, and steps Pine Valley Contracting, Inc. will use on the above, mentioned project. 1. Fertilizer: 170/60/70 *lb/ac (MFA Harrisonville) --Soil Analysis 17-240-0122 and 17-240-0213 submitted from Krueger Technologies, Inc. showed substantial amounts of Sulfur and Copper present. --Pine Valley will use the highest rates of Nitrogen, Phosphate, and Potash to achieve the best results, and bring down the acidic levels in the soil. The fertilizer will be spread on all areas first at the rates listed above before any seed is spread. Per Pine Valley’s fertilizer supplier this will help obtain a more balanced soil needed for growth. 2. Ground Prep: --Using a harrow, Pine Valley will work up the ground before seed is spread. 3. Seed: 80% Kentucky 31 Tall Fescue 20% Red Clover *4lb/1,000SF (Tri Star Seed Co., Inc.) --Using a cultipacker type seeder, Pine Valley will apply the seed at the rates listed above. 4. Mulch: Vegetative *5,000lb/ac --A bale processor will be used to cover the seed at the rates listed above. 5. Crimp: --Using a Burchland crimper on the mulch. .

Appendix F Clean Closure Area

Environmental Consultants and Contractors

7311 West 130 t h Street Suite 100 Overland Park, KS 66213

913 681-0030 FAX 913 681-0012 www.scsengineers.com

June 9, 2017 File No. 27215142.00

MEMORANDUM TO:

Jessica Fett, Independence Power & Light (I&PL) Eric Holder, Independence Power & Light

FROM:

Patrick Goeke, P.E., SCS Engineers (SCS) Doug Doerr, P.E., SCS

SUBJECT:

CCR Clean Closure in New Sedimentation Pond Construction Area

In accordance with the Coal Combustion Residuals (CCR) Federal Rule [40 CFR Part 257.100], a portion of the bottom ash impoundment at IP&L’s Blue Valley Power Station was “Clean Closed” (per 40 CFR Part 257.100(b)(5)). Under the Federal CCR Rule, clean closure requires the removal of the CCR, any liner that may be present, and soils impacted by the ash. The portion of the bottom ash impoundment that was clean closed was selected to allow construction of a new sedimentation pond for the plant process water. The former bottom ash impoundment was designed in 1977 and constructed in 1978. The 1977 Geotechnical Information (boring logs and laboratory test data) from the design phase were provided by IP&L and indicated the foundation soils are high plastic alluvial clays with a permeability in the range of approximately 2x10-7 to 1x10-8 centimeters per second (cm/sec). The construction drawings and specifications were unable to be located; without the construction documents or record drawings, it is unknown whether a liner system was installed under the ash impoundment. In accordance with the Federal CCR Rule and based on the assumed conditions as noted above, the clean closure activities took place in four stages: 1. Ash removal: Removal of the existing ash from the closure area; 2. Liner exploration: Examination of the bottom of the clean closure area to determine if a

liner system was present; 3. Clean closure sampling: Sampling of the foundation/bottom of the clean closure area and laboratory analysis to determine if the ash and potentially impacted soils were present and subsequently removed; and 4. Closure sample testing and analytical results evaluation: Laboratory testing and review of the sampling results.

Offices Nationwide

MEMORANDUM June 9, 2017 Page 2

ASH REMOVAL The clean closure area consisted of approximately 2.7 acres of the southern portion of the bottom ash impoundment. The contractor excavated the ash from the impoundment down to the underlying native alluvial clays forming the bottom of the impoundment. The ash relocated from this area was moved to the north portion of the contiguous bottom ash impoundment as part of the final grading for future capping of the ash impoundment.

LINER EXPLORATION To determine if a liner system was present under the former bottom ash impoundment, SCS observed the excavation of seven test pits in two phases (on 1/12/2017 and 2/6/2017) as the ash excavation progressed. The test pits were visually examined and photographed by a professional geotechnical engineer to determine if there was evidence of a liner system in the bottom ash pond impoundment. Visual examination of the test pits did not reveal evidence that a liner system was present on top of the native alluvial clays described in 1977 Geotechnical Information Report. Test pits excavated on the west half of the impoundment visually indicated the presence of native clays, approximately 6 to 12 inches deep, that may have been impacted by the bottom ash. To provide a level base for the new pond lining system and remove the questionable material in the west half of the pond, materials were excavated to an elevation of approximately 747.75 feet mean sea level across the base of the clean closure area.

CLEAN CLOSURE SAMPLING During the excavation of the seven test pits to explore for a liner system, soil samples were collected from the foundation soils in each test pit. These samples were analyzed to determine if the foundation soils were potentially impacted by the overlying CCR. The locations of the test pits are shown on the figure in Appendix C. Soil samples were generally collected from depths of 0 to 12 inches, 12 to 24 inches, and 24 to 36 inches below the bottom of the ash excavation. In the test pits on the western portion of the pond bottom, where it was determined that additional excavation would take place (limits shown on Figure 1), three soil samples were collected from the indicated depths below the soil to be removed at each of the three test pits. For comparison purposes, three background test pits were excavated in the area up gradient and west of the bottom ash impoundment to collect samples of the alluvial clays from the bottom of the borrow area used during the initial pond construction. The elevation of the background test pits and the test pits in the bottom of the ash pond were similar elevations, and the soils appeared similar in visual appearance and color and of a similar soil classification. The clean closure samples were categorized into two groups: clean foundation and background.

MEMORANDUM June 9, 2017 Page 3

CLOSURE SAMPLE TESTING AND ANALYTICAL RESULTS EVALUATION The clean closure samples collected from the seven test pits in the bottom ash impoundment and the soil samples from the three background sample locations were submitted to ESC Lab Sciences of Nashville, Tennessee for potential analytical testing. A total of seven near surface and two deeper samples were submitted for analysis, together with three background samples. If the upper closure sample exhibited signs of impact, then the deeper closure soil samples would be tested. If the upper closure sample did not exhibit signs of impact, then the deeper closure soil samples would not be tested. The initial round of soil sample analyses included two near surface samples and the background samples. These samples were analyzed for metals (aluminum, arsenic, barium, boron, cadmium, chromium, lead selenium, and silver) by EPA Method 6010B, mercury by EPA Method 7471A, fluoride by EPA Method 9056A, and pH by Method 9045D. Based on the analytical results from the first round of samples, the list of metals for the second round of samples was reduced by eliminating analytes (cadmium, selenium, silver, and mercury) that were below the method detection limits. The modified list of metals analyzed in the second round of samples included aluminum, arsenic, barium, boron, chromium, and lead. The second round also included pH and fluoride. In order to assess the potential impact to the foundation soils, the clean closure sample concentrations were compared to the background concentrations, rather than the Missouri Department of Natural Resources (MDNR) domestic use (DU) groundwater (GW) pathway concentrations because, in some instances (lead, arsenic, and fluoride), the background levels exceeded the MDNR DU GW Pathway concentrations. The laboratory test results are summarized in the following table and laboratory test reports are presented in Appendix A. To compare the data from the two sample groups (clean foundation and background), the sample data was plotted for each major constituent. The graphs are presented in Appendix B and discussed below. The data in all graphs are shown in units of micrograms per kilograms (µg/kg).

MEMORANDUM June 9, 2017 Page 4

SUMMARY OF CLOSURE SAMPLE LABORATORY RESULTS Analyte

Background

Clean Foundation (Closure Samples)

Sample Group

Project Sample ID TP-1 TP-2 TP-3 TP-3 (duplicate) TP-3 TP-4 TP-4 TP-5 TP-6 TP-7

Sample Depth BGS 0” to 6" 6” to 12" 6” to 12" 6” to 12" 18” to 24” 6” to 12" 18” to 24" 6” to 12" 6” to 12" 6” to 12"

Aluminum µg/kg 9,610,000 9,360,000 17,200,000 NA 27,800,000 10,600,000 16,300,000 14,700,000 12,000,000 15,300,000

Arsenic µg/kg 5,210 4,820 6,740 NA 7,700 4,750 11,400 4,950 <2590 3,600

Barium µg/kg 265,000 210,000 141,000 NA 151,000 65,400 128,000 96,300 175,000 175,000

Boron µg/kg <12700 19,900 <12400 NA <12600 <12600 <12400 <12600 <13000 <12600

Chromium µg/kg 12,600 12,500 18,000 NA 24,700 13,400 17,900 15,600 19,700 15,900

Lead µg/kg 11,400 12,400 9,580 NA 4,370 11,300 10,500 7,440 12,600 7,470

Fluoride µg/kg 9,260 14,600 27,000 11,400 20,100 11,100 17,900 10,100 10,900 17,000

BG-1 BG-2 BG-3

12” to 18" 12” to 18" 12” to 18"

9,360,000 14,800,000 13,800,000

4,000 6,130 7,470

71,800 135,000 217,000

<12100 <11700 <12100

13,500 16,300 16,400

6,590 9,060 11,500

18,100 8,050 8,230

137,000,000

7,200

2,040,000

1,600,000

3,770

13,900

MDNR DU GW Pathway (Clayey)

Table Notes Shaded cells exceed the laboratory method detection limit (MDL) Red values exceed the Background Concentration AND the MDNR Direct Use Groundwater Pathway concentrations for Clayey Soils NA indicates not applicable or laboratory analytical data was not run for specific parameter. BGS = below ground surface TP = test pit

Offices Nationwide

MEMORANDUM June 9, 2017 Page 5

Aluminum. The graph to the right presents the aluminum concentration data for the two sample groups. As shown on the graph, aluminum concentrations in the nine clean foundation closure samples (blue diamonds) were generally in the same range as the concentrations in the background samples (red squares). One clean foundation closure sample (from a depth of 18” to 24”) exhibited the highest aluminum concentration (27,800,000 µg/kg), while the near surface sample from that location, exhibited lower concentrations (17,600,000 µg/kg) than the deeper sample. All results were below the aluminum MDNR DU GW Pathway concentration (137,000,000 µg/kg). Arsenic. Arsenic concentrations in the two deeper closure samples and one background sample, exceeded the arsenic MDNR DU GW Pathway concentration (7,200 µg/kg). The graph to the bottom right presents the arsenic data for the two sample groups. As shown on the graph, arsenic concentrations in the nine closure samples (blue diamonds) were generally in the same range as the arsenic concentrations in the background samples (red squares). Of the closure samples, the two highest arsenic concentrations were obtained from the samples collected from 18” to 24” (7,700 and 11,400 µg/kg), while the near surface samples had corresponding concentrations of 6,740 and 4,750 µg/kg. Barium. The graph on the top left of the next page presents the barium data for the two sample groups. As shown on the graph, barium concentrations in the nine closure samples (blue diamonds) were generally in the same range as barium concentrations in the background samples (red squares). All results were below the barium MDNR DU GW Pathway concentration (2,040,000 µg/kg). Boron. Boron was not detected in the background samples or in eight of the nine closure samples (<12,000 µg/kg), but was detected in one closure sample (19,900 µg/kg). MDNR has not established a DU GW Pathway concentration for boron. Chromium. The graph in the top center of the next page presents the chromium data for the two sample groups. As shown on the graph, the nine closure samples exhibit a slightly larger range of chromium concentrations than the range shown by the background samples. While the closure sample concentration range for chromium may be slightly higher than for other

Offices Nationwide

MEMORANDUM June 9, 2017 Page 6

constituents, the chromium concentrations in all of the samples are significantly below the MDNR DU GW Pathway concentration of 1,600,000 µg/kg. Lead. The graph in the top right of this page presents the lead data for the two sample groups. As shown on the graph, lead concentrations in the nine closure samples were generally in the same range as the lead concentrations in the background samples. The lead concentrations in all of the samples, including the three background samples, exceeded the MDNR DU GW Pathway concentration of 3,770 µg/kg, indicating the naturally occurring background lead concentration in the area is elevated for reasons other than the storage of CCR. Fluoride. The graph to the right presents the fluoride data for the two sample groups. As shown on the graph to the right, fluoride concentrations in the nine closure samples were generally in the same range as the concentrations in the background samples. Five soils samples, including one background sample, had fluoride concentrations exceeding the MDNR DU GW Pathway concentration of 13,900 µg/kg.

MEMORANDUM June 9, 2017 Page 7

CLOSURE SAMPLE SUMMARY The observations of the clean closure test pits and the laboratory data indicate no evidence a liner system was installed during construction of the former bottom ash impoundment. SCS observed the removal of the ash from the clean closure area and soils that visually appeared to have been possibly impacted by the storage of ash. It is SCS’s professional opinion that the area of the former bottom ash impoundment has been closed using the “Clean Closure” measures outlined in the Federal CCR Rule [40 CFR Part 257.100(b)(5)].

APPENDICIES Appendix A – Laboratory Analytical Results Appendix B – Analyte Summary Graphs Appendix C – Figure

APPENDIX A LABORATORY TEST REPORTS

ANALYTICAL REPORT January 27, 2017

SCS Engineers - KS Sample Delivery Group:

L885315

Samples Received:

01/13/2017

Project Number: Description:

IPL-Ash Pond Closure Test Pits

Report To:

Patrick Goeke 7311 West 130th Street, Ste. 100 Overland Park, KS 66213

Entire Report Reviewed By:

[Preliminary Report] Jeff Carr Technical Service Representative Results relate only to the items tested or calibrated and are reported as rounded values. This test report shall not be reproduced, except in full, without written approval of the laboratory. Where applicable, sampling conducted by ESC is performed per guidance provided in laboratory standard operating procedures: 060302, 060303, and 060304.

12065 Lebanon Rd

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615-758-5858

800-767-5859

www.esclabsciences.com

TABLE OF CONTENTS

ONE LAB. NATIONWIDE.

¹Cp: Cover Page

²Tc: Table of Contents

³Ss: Sample Summary

⁴Cn: Case Narrative

⁵Sr: Sample Results

TP-1 0-6"

L885315-01

TP-2 6-12"

L885315-02

TP-3 6-12"

L885315-03

TP-4 6-12"

L885315-04

BG-1 12-18"

L885315-05

BG-2 12-18"

L885315-06

BG-3 12-18"

L885315-07

⁶Qc: Quality Control Summary

Total Solids by Method 2540 G-2011

Wet Chemistry by Method 9045D

Wet Chemistry by Method 9056A

Mercury by Method 7471A

Metals (ICP) by Method 6010B

⁷Gl: Glossary of Terms

⁸Al: Accreditations & Locations

⁹Sc: Chain of Custody

ACCOUNT: SCS Engineers - KS

PROJECT:

SDG: L885315

DATE/TIME: 01/27/17 15:39 15:37

PAGE: 2 of 23

Cp Tc Ss Cn Sr Qc Gl Al Sc

SAMPLE SUMMARY

Batch

Mercury by Method 7471A Metals (ICP) by Method 6010B Total Solids by Method 2540 G-2011 Wet Chemistry by Method 9045D Wet Chemistry by Method 9056A

WG945968 WG945529 WG946136 WG945457 WG946329

Collected date/time 01/12/17 08:30

Dilution

Preparation date/time

Analysis date/time

Analyst

1 1 1 1 1

01/24/17 11:22 01/26/17 15:08 01/24/17 16:14 01/27/17 11:03 01/25/17 09:58

01/25/17 10:42 01/27/17 12:12 01/24/17 16:23 01/27/17 11:58 01/25/17 18:19

NJB LTB MEL MHM SAM

Collected by Whit Martin

Collected date/time 01/12/17 09:00

Batch

Dilution

Preparation date/time

Mercury by Method 7471A Metals (ICP) by Method 6010B Total Solids by Method 2540 G-2011 Wet Chemistry by Method 9045D Wet Chemistry by Method 9056A

WG945968 WG945529 WG946136 WG945457 WG946329

1 1 1 1 1

Received date/time 01/13/17 09:00

Analysis date/time

Analyst

01/24/17 11:22 01/26/17 15:08 01/24/17 16:14 01/27/17 11:03 01/25/17 09:58

01/25/17 10:45 01/27/17 12:15 01/24/17 16:23 01/27/17 11:58 01/25/17 19:04

NJB LTB MEL MHM SAM

Collected by Whit Martin

Collected date/time 01/12/17 09:15

Dilution

Preparation date/time

Analysis date/time

Analyst

1 1 1 1 1

01/24/17 11:22 01/26/17 15:08 01/24/17 16:14 01/27/17 11:03 01/25/17 09:58

01/25/17 10:48 01/27/17 12:17 01/24/17 16:23 01/27/17 11:58 01/25/17 19:49

NJB LTB MEL MHM SAM

Collected by Whit Martin

Collected date/time 01/12/17 09:40

Dilution

Preparation date/time

Analysis date/time

Analyst

1 1 1 1 1

01/24/17 11:22 01/26/17 15:08 01/24/17 16:14 01/27/17 11:03 01/25/17 09:58

01/25/17 10:50 01/27/17 12:20 01/24/17 16:23 01/27/17 11:58 01/25/17 20:04

NJB LTB MEL MHM SAM

Collected by Whit Martin

Collected date/time 01/12/17 10:20

Dilution

Preparation date/time

Analysis date/time

Analyst

TP-2 6-12" L885315-02 Solid Method

Received date/time 01/13/17 09:00

Collected by Whit Martin

TP-1 0-6" L885315-01 Solid Method

ONE LAB. NATIONWIDE.

TP-3 6-12" L885315-03 Solid Method

Batch

Mercury by Method 7471A Metals (ICP) by Method 6010B Total Solids by Method 2540 G-2011 Wet Chemistry by Method 9045D Wet Chemistry by Method 9056A

WG945968 WG945529 WG946136 WG945457 WG946329

TP-4 6-12" L885315-04 Solid Method

Batch

Mercury by Method 7471A Metals (ICP) by Method 6010B Total Solids by Method 2540 G-2011 Wet Chemistry by Method 9045D Wet Chemistry by Method 9056A

WG945968 WG945529 WG946136 WG945457 WG946329

BG-1 12-18" L885315-05 Solid

Received date/time 01/13/17 09:00

Method

Batch

Mercury by Method 7471A Metals (ICP) by Method 6010B Total Solids by Method 2540 G-2011 Wet Chemistry by Method 9045D

WG945968 WG945529 WG946136 WG945457

1 1 1 1

01/24/17 11:22 01/26/17 15:08 01/24/17 16:14 01/27/17 11:03

01/25/17 10:53 01/27/17 12:31 01/24/17 16:23 01/27/17 11:58

NJB LTB MEL MHM

Wet Chemistry by Method 9056A

WG946329

01/25/17 09:58

01/25/17 20:18

SAM

ACCOUNT: SCS Engineers - KS

PROJECT:

SDG: L885315

DATE/TIME: 01/27/17 15:39 15:37

PAGE: 3 of 23

Cp Tc Ss Cn Sr Qc Gl Al Sc

SAMPLE SUMMARY

Batch

Mercury by Method 7471A Metals (ICP) by Method 6010B Total Solids by Method 2540 G-2011 Wet Chemistry by Method 9045D Wet Chemistry by Method 9056A

WG945968 WG945529 WG946136 WG945457 WG946329

Collected date/time 01/12/17 10:25

Dilution

Preparation date/time

Analysis date/time

Analyst

1 1 1 1 1

01/24/17 11:22 01/26/17 15:08 01/24/17 16:14 01/27/17 11:03 01/25/17 09:58

01/25/17 10:55 01/27/17 12:33 01/24/17 16:23 01/27/17 11:58 01/25/17 20:33

NJB LTB MEL MHM SAM

Collected by Whit Martin

Collected date/time 01/12/17 10:30

Dilution

Preparation date/time

1 1 1 1 1

01/24/17 11:22 01/26/17 15:08 01/24/17 16:14 01/26/17 10:55 01/25/17 09:58

BG-3 12-18" L885315-07 Solid Method

Batch

Mercury by Method 7471A Metals (ICP) by Method 6010B Total Solids by Method 2540 G-2011 Wet Chemistry by Method 9045D Wet Chemistry by Method 9056A

WG945968 WG945529 WG946136 WG946212 WG946329

Received date/time 01/13/17 09:00

Collected by Whit Martin

BG-2 12-18" L885315-06 Solid Method

ONE LAB. NATIONWIDE.

Received date/time 01/13/17 09:00

Analysis date/time

Analyst

01/25/17 10:58 01/27/17 12:36 01/24/17 16:23 01/26/17 12:45 01/25/17 20:48

NJB LTB MEL KK SAM

ACCOUNT: SCS Engineers - KS

PROJECT:

SDG: L885315

DATE/TIME: 01/27/17 15:39 15:37

PAGE: 4 of 23

Cp Tc Ss Cn Sr Qc Gl Al Sc

CASE NARRATIVE

ONE LAB. NATIONWIDE.

All MDL (LOD) and RDL (LOQ) values reported for environmental samples have been corrected for the dilution factor used in the analysis. All Method and Batch Quality Control are within established criteria except where addressed in this case narrative, a non-conformance form or properly qualified within the sample results. By my digital signature below, I affirm to the best of my knowledge, all problems/anomalies observed by the laboratory as having the potential to affect the quality of the data have been identified by the laboratory, and no information or data have been knowingly withheld that would affect the quality of the data.

[Preliminary Report] 7

Jeff Carr

Technical Service Representative 9

Sample Handling and Receiving The following samples were prepared and/or analyzed past recommended holding time. Concentrations should be considered minimum values. ESC Sample ID Project Sample ID Method L885315-01 TP-1 0-6" 9045D L885315-02 TP-2 6-12" 9045D L885315-03 TP-3 6-12" 9045D L885315-04 TP-4 6-12" 9045D L885315-05 BG-1 12-18" 9045D L885315-06 BG-2 12-18" 9045D L885315-07 BG-3 12-18" 9045D

ACCOUNT: SCS Engineers - KS

PROJECT:

SDG: L885315

DATE/TIME: 01/27/17 15:39 15:37

PAGE: 5 of 23

Cp Tc Ss Cn Sr Qc Gl Al Sc

TP-1 0-6"

SAMPLE RESULTS - 01

Collected date/time: 01/12/17 08:30

ONE LAB. NATIONWIDE.

L885315

Total Solids by Method 2540 G-2011 Analyte

Result %

Total Solids

78.5

Qualifier

Dilution

Analysis date / time

Batch

01/24/2017 16:23

WG946136

Wet Chemistry by Method 9045D Analyte

Result su

6.52

Qualifier

Dilution

Analysis date / time

Batch

01/27/2017 11:58

WG945457

Sample Narrative: 9045D L885315-01 WG945457: 6.52 at 18.7c 6

Wet Chemistry by Method 9056A Result (dry) mg/kg

Qualifier

RDL (dry) mg/kg

Dilution

Analysis date / time

Batch

Analyte Fluoride

9.26

1.27

01/25/2017 18:19

WG946329

Cp Tc Ss Cn Sr Qc Gl Al

Mercury by Method 7471A Analyte

Result (dry) mg/kg

Mercury

Qualifier

RDL (dry) mg/kg

Dilution

Analysis date / time

Batch

0.0255

01/25/2017 10:42

WG945968

RDL (dry) mg/kg

Dilution

Analysis date / time

Batch

12.7 2.55 0.637 12.7 0.637 1.27 0.637 2.55 1.27

1 1 1 1 1 1 1 1 1

01/27/2017 12:12 01/27/2017 12:12 01/27/2017 12:12 01/27/2017 12:12 01/27/2017 12:12 01/27/2017 12:12 01/27/2017 12:12 01/27/2017 12:12 01/27/2017 12:12

WG945529 WG945529 WG945529 WG945529 WG945529 WG945529 WG945529 WG945529 WG945529

Metals (ICP) by Method 6010B Analyte

Result (dry) mg/kg

Aluminum Arsenic Barium Boron Cadmium Chromium Lead Selenium Silver

9610 5.21 265 ND ND 12.6 11.4 ND ND

ACCOUNT: SCS Engineers - KS

Qualifier

PROJECT:

SDG: L885315

DATE/TIME: 01/27/17 15:39 15:37

PAGE: 6 of 23

TP-2 6-12"

SAMPLE RESULTS - 02

Collected date/time: 01/12/17 09:00

ONE LAB. NATIONWIDE.

L885315

Total Solids by Method 2540 G-2011 Analyte

Result %

Total Solids

76.8

Qualifier

Dilution

Analysis date / time

Batch

01/24/2017 16:23

WG946136

Wet Chemistry by Method 9045D Analyte

Result su

6.87

Qualifier

Dilution

Analysis date / time

Batch

01/27/2017 11:58

WG945457

Sample Narrative: 9045D L885315-02 WG945457: 6.87 at 18.5c 6

Wet Chemistry by Method 9056A Analyte

Result (dry) mg/kg

Fluoride

14.6

Qualifier

RDL (dry) mg/kg

Dilution

Analysis date / time

Batch

1.30

01/25/2017 19:04

WG946329

Cp Tc Ss Cn Sr Qc Gl Al

Mercury by Method 7471A Analyte

Result (dry) mg/kg

Mercury

Qualifier

RDL (dry) mg/kg

Dilution

Analysis date / time

Batch

0.0260

01/25/2017 10:45

WG945968

RDL (dry) mg/kg

Dilution

Analysis date / time

Batch

13.0 2.60 0.651 13.0 0.651 1.30 0.651 2.60 1.30

1 1 1 1 1 1 1 1 1

01/27/2017 12:15 01/27/2017 12:15 01/27/2017 12:15 01/27/2017 12:15 01/27/2017 12:15 01/27/2017 12:15 01/27/2017 12:15 01/27/2017 12:15 01/27/2017 12:15

WG945529 WG945529 WG945529 WG945529 WG945529 WG945529 WG945529 WG945529 WG945529

Metals (ICP) by Method 6010B Analyte

Result (dry) mg/kg

Aluminum Arsenic Barium Boron Cadmium Chromium Lead Selenium Silver

9360 4.82 210 19.9 ND 12.5 12.4 ND ND

ACCOUNT: SCS Engineers - KS

Qualifier

PROJECT:

SDG: L885315

DATE/TIME: 01/27/17 15:39 15:37

PAGE: 7 of 23

TP-3 6-12"

SAMPLE RESULTS - 03

Collected date/time: 01/12/17 09:15

ONE LAB. NATIONWIDE.

L885315

Total Solids by Method 2540 G-2011 Analyte

Result %

Total Solids

80.3

Qualifier

Dilution

Analysis date / time

Batch

01/24/2017 16:23

WG946136

Wet Chemistry by Method 9045D Analyte

Result su

7.07

Qualifier

Dilution

Analysis date / time

Batch

01/27/2017 11:58

WG945457

Sample Narrative: 9045D L885315-03 WG945457: 7.07 at 18.4c 6

Wet Chemistry by Method 9056A Analyte

Result (dry) mg/kg

Fluoride

27.0

Qualifier

RDL (dry) mg/kg

Dilution

Analysis date / time

Batch

1.24

01/25/2017 19:49

WG946329

Cp Tc Ss Cn Sr Qc Gl Al

Mercury by Method 7471A Analyte

Result (dry) mg/kg

Mercury

Qualifier

RDL (dry) mg/kg

Dilution

Analysis date / time

Batch

0.0249

01/25/2017 10:48

WG945968

RDL (dry) mg/kg

Dilution

Analysis date / time

Batch

12.4 2.49 0.622 12.4 0.622 1.24 0.622 2.49 1.24

1 1 1 1 1 1 1 1 1

01/27/2017 12:17 01/27/2017 12:17 01/27/2017 12:17 01/27/2017 12:17 01/27/2017 12:17 01/27/2017 12:17 01/27/2017 12:17 01/27/2017 12:17 01/27/2017 12:17

WG945529 WG945529 WG945529 WG945529 WG945529 WG945529 WG945529 WG945529 WG945529

Metals (ICP) by Method 6010B Analyte

Result (dry) mg/kg

Aluminum Arsenic Barium Boron Cadmium Chromium Lead Selenium Silver

17200 6.74 141 ND ND 18.0 9.58 ND ND

ACCOUNT: SCS Engineers - KS

Qualifier

PROJECT:

SDG: L885315

DATE/TIME: 01/27/17 15:39 15:37

PAGE: 8 of 23

TP-4 6-12"

SAMPLE RESULTS - 04

Collected date/time: 01/12/17 09:40

ONE LAB. NATIONWIDE.

L885315

Total Solids by Method 2540 G-2011 Analyte

Result %

Total Solids

79.6

Qualifier

Dilution

Analysis date / time

Batch

01/24/2017 16:23

WG946136

Wet Chemistry by Method 9045D Analyte

Result su

5.95

Qualifier

Dilution

Analysis date / time

Batch

01/27/2017 11:58

WG945457

Sample Narrative: 9045D L885315-04 WG945457: 5.95 at 19.4c 6

Wet Chemistry by Method 9056A Analyte

Result (dry) mg/kg

Fluoride

11.1

Qualifier

RDL (dry) mg/kg

Dilution

Analysis date / time

Batch

1.26

01/25/2017 20:04

WG946329

Cp Tc Ss Cn Sr Qc Gl Al

Mercury by Method 7471A Analyte

Result (dry) mg/kg

Mercury

Qualifier

RDL (dry) mg/kg

Dilution

Analysis date / time

Batch

0.0251

01/25/2017 10:50

WG945968

RDL (dry) mg/kg

Dilution

Analysis date / time

Batch

12.6 2.51 0.628 12.6 0.628 1.26 0.628 2.51 1.26

1 1 1 1 1 1 1 1 1

01/27/2017 12:20 01/27/2017 12:20 01/27/2017 12:20 01/27/2017 12:20 01/27/2017 12:20 01/27/2017 12:20 01/27/2017 12:20 01/27/2017 12:20 01/27/2017 12:20

WG945529 WG945529 WG945529 WG945529 WG945529 WG945529 WG945529 WG945529 WG945529

Metals (ICP) by Method 6010B Analyte

Result (dry) mg/kg

Aluminum Arsenic Barium Boron Cadmium Chromium Lead Selenium Silver

10600 4.75 65.4 ND ND 13.4 11.3 ND ND

ACCOUNT: SCS Engineers - KS

Qualifier

PROJECT:

SDG: L885315

DATE/TIME: 01/27/17 15:39 15:37

PAGE: 9 of 23

BG-1 12-18"

SAMPLE RESULTS - 05

Collected date/time: 01/12/17 10:20

ONE LAB. NATIONWIDE.

L885315

Total Solids by Method 2540 G-2011 Analyte

Result %

Total Solids

82.5

Qualifier

Dilution

Analysis date / time

Batch

01/24/2017 16:23

WG946136

Wet Chemistry by Method 9045D Analyte

Result su

7.49

Qualifier

Dilution

Analysis date / time

Batch

01/27/2017 11:58

WG945457

Sample Narrative: 9045D L885315-05 WG945457: 7.49 at 19.5c 6

Wet Chemistry by Method 9056A Analyte

Result (dry) mg/kg

Fluoride

18.1

Qualifier

RDL (dry) mg/kg

Dilution

Analysis date / time

Batch

1.21

01/25/2017 20:18

WG946329

Cp Tc Ss Cn Sr Qc Gl Al

Mercury by Method 7471A Analyte

Result (dry) mg/kg

Mercury

Qualifier

RDL (dry) mg/kg

Dilution

Analysis date / time

Batch

0.0243

01/25/2017 10:53

WG945968

RDL (dry) mg/kg

Dilution

Analysis date / time

Batch

12.1 2.43 0.606 12.1 0.606 1.21 0.606 2.43 1.21

1 1 1 1 1 1 1 1 1

01/27/2017 12:31 01/27/2017 12:31 01/27/2017 12:31 01/27/2017 12:31 01/27/2017 12:31 01/27/2017 12:31 01/27/2017 12:31 01/27/2017 12:31 01/27/2017 12:31

WG945529 WG945529 WG945529 WG945529 WG945529 WG945529 WG945529 WG945529 WG945529

Metals (ICP) by Method 6010B Analyte

Result (dry) mg/kg

Aluminum Arsenic Barium Boron Cadmium Chromium Lead Selenium Silver

9360 4.00 71.8 ND ND 13.5 6.59 ND ND

ACCOUNT: SCS Engineers - KS

Qualifier

PROJECT:

SDG: L885315

DATE/TIME: 01/27/17 15:39 15:37

PAGE: 10 of 23

BG-2 12-18"

SAMPLE RESULTS - 06

Collected date/time: 01/12/17 10:25

ONE LAB. NATIONWIDE.

L885315

Total Solids by Method 2540 G-2011 Analyte

Result %

Total Solids

85.5

Qualifier

Dilution

Analysis date / time

Batch

01/24/2017 16:23

WG946136

Wet Chemistry by Method 9045D Analyte

Result su

6.02

Qualifier

Dilution

Analysis date / time

Batch

01/27/2017 11:58

WG945457

Sample Narrative: 9045D L885315-06 WG945457: 6.02 at 18.6c 6

Wet Chemistry by Method 9056A Analyte

Result (dry) mg/kg

Fluoride

8.05

Qualifier

RDL (dry) mg/kg

Dilution

Analysis date / time

Batch

1.17

01/25/2017 20:33

WG946329

Cp Tc Ss Cn Sr Qc Gl Al

Mercury by Method 7471A Analyte

Result (dry) mg/kg

Mercury

Qualifier

RDL (dry) mg/kg

Dilution

Analysis date / time

Batch

0.0234

01/25/2017 10:55

WG945968

RDL (dry) mg/kg

Dilution

Analysis date / time

Batch

11.7 2.34 0.585 11.7 0.585 1.17 0.585 2.34 1.17

1 1 1 1 1 1 1 1 1

01/27/2017 12:33 01/27/2017 12:33 01/27/2017 12:33 01/27/2017 12:33 01/27/2017 12:33 01/27/2017 12:33 01/27/2017 12:33 01/27/2017 12:33 01/27/2017 12:33

WG945529 WG945529 WG945529 WG945529 WG945529 WG945529 WG945529 WG945529 WG945529

Metals (ICP) by Method 6010B Analyte

Result (dry) mg/kg

Aluminum Arsenic Barium Boron Cadmium Chromium Lead Selenium Silver

14800 6.13 135 ND ND 16.3 9.06 ND ND

ACCOUNT: SCS Engineers - KS

Qualifier

PROJECT:

SDG: L885315

DATE/TIME: 01/27/17 15:39 15:37

PAGE: 11 of 23

BG-3 12-18"

SAMPLE RESULTS - 07

Collected date/time: 01/12/17 10:30

ONE LAB. NATIONWIDE.

L885315

Total Solids by Method 2540 G-2011 Analyte

Result %

Total Solids

83.0

Qualifier

Dilution

Analysis date / time

Batch

01/24/2017 16:23

WG946136

Wet Chemistry by Method 9045D Analyte

Result su

6.73

Qualifier

Dilution

Analysis date / time

Batch

01/26/2017 12:45

WG946212

Sample Narrative: 9045D L885315-07 WG946212: 6.73 at 17.5c 6

Wet Chemistry by Method 9056A Result (dry) mg/kg

Qualifier

RDL (dry) mg/kg

Dilution

Analysis date / time

Batch

Analyte Fluoride

8.23

1.21

01/25/2017 20:48

WG946329

Cp Tc Ss Cn Sr Qc Gl Al

Mercury by Method 7471A Analyte

Result (dry) mg/kg

Mercury

Qualifier

RDL (dry) mg/kg

Dilution

Analysis date / time

Batch

0.0241

01/25/2017 10:58

WG945968

RDL (dry) mg/kg

Dilution

Analysis date / time

Batch

12.1 2.41 0.603 12.1 0.603 1.21 0.603 2.41 1.21

1 1 1 1 1 1 1 1 1

01/27/2017 12:36 01/27/2017 12:36 01/27/2017 12:36 01/27/2017 12:36 01/27/2017 12:36 01/27/2017 12:36 01/27/2017 12:36 01/27/2017 12:36 01/27/2017 12:36

WG945529 WG945529 WG945529 WG945529 WG945529 WG945529 WG945529 WG945529 WG945529

Metals (ICP) by Method 6010B Analyte

Result (dry) mg/kg

Aluminum Arsenic Barium Boron Cadmium Chromium Lead Selenium Silver

13800 7.47 217 ND ND 16.4 11.5 ND ND

ACCOUNT: SCS Engineers - KS

Qualifier

PROJECT:

SDG: L885315

DATE/TIME: 01/27/17 15:39 15:37

PAGE: 12 of 23

WG946136

QUALITY CONTROL SUMMARY

Total Solids by Method 2540 G-2011

ONE LAB. NATIONWIDE.

L885315-01,02,03,04,05,06,07

Method Blank (MB)

(MB) R3192618-1 01/24/17 16:23 MB Result Analyte % Total Solids

MB Qualifier

MB MDL %

MB RDL %

0.00120 3

L885310-02 Original Sample (OS) • Duplicate (DUP)

(OS) L885310-02 01/24/17 16:23 • (DUP) R3192618-3 01/24/17 16:23 Original Result DUP Result Dilution DUP RPD Analyte % % % Total Solids

86.2

86.1

DUP Qualifier

0.0253

DUP RPD Limits %

Laboratory Control Sample (LCS)

(LCS) R3192618-2 01/24/17 16:23 Spike Amount Analyte %

LCS Result %

LCS Rec. %

Rec. Limits %

Total Solids

50.0

100

85.0-115

Sr Qc Gl

LCS Qualifier 8

ACCOUNT: SCS Engineers - KS

5 6

50.0

PROJECT:

SDG: L885315

DATE/TIME: 01/27/17 15:39 15:37

PAGE: 13 of 23

Al Sc

WG945457

QUALITY CONTROL SUMMARY

Wet Chemistry by Method 9045D

ONE LAB. NATIONWIDE.

L885315-01,02,03,04,05,06

L885118-03 Original Sample (OS) • Duplicate (DUP)

(OS) L885118-03 01/27/17 11:58 • (DUP) WG945457-3 01/27/17 11:58 Original Result DUP Result Dilution DUP RPD Analyte su su % pH

7.51

7.50

DUP Qualifier

0.133

DUP RPD Limits %

L885315-06 Original Sample (OS) • Duplicate (DUP)

(OS) L885315-06 01/27/17 11:58 • (DUP) WG945457-4 01/27/17 11:58 Original Result DUP Result Dilution DUP RPD Analyte su su % 6.02

6.01

DUP Qualifier

0.166

DUP RPD Limits %

Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) WG945457-1 01/27/17 11:58 • (LCSD) WG945457-2 01/27/17 11:58 Spike Amount LCS Result LCSD Result LCS Rec. Analyte su su su %

LCSD Rec. %

Rec. Limits %

100

98.4-102

6.11

6.07

101

LCS Qualifier

LCSD Qualifier RPD % 0.657

RPD Limits %

Cn Sr

PROJECT:

SDG: L885315

Qc Gl Al

1 9

ACCOUNT: SCS Engineers - KS

1 6

6.07

1 3

DATE/TIME: 01/27/17 15:39 15:37

PAGE: 14 of 23

WG946212

QUALITY CONTROL SUMMARY

Wet Chemistry by Method 9045D

ONE LAB. NATIONWIDE.

L885315-07

L885315-07 Original Sample (OS) • Duplicate (DUP)

(OS) L885315-07 01/26/17 12:45 • (DUP) WG946212-3 01/26/17 12:45 Original Result DUP Result Dilution DUP RPD Analyte su su % pH

6.73

6.75

DUP Qualifier

0.297

DUP RPD Limits %

L885926-08 Original Sample (OS) • Duplicate (DUP)

(OS) L885926-08 01/26/17 12:45 • (DUP) WG946212-4 01/26/17 12:45 Original Result DUP Result Dilution DUP RPD Analyte su su % 8.03

8.03

DUP Qualifier

0.000

DUP RPD Limits %

Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) WG946212-1 01/26/17 12:45 • (LCSD) WG946212-2 01/26/17 12:45 Spike Amount LCS Result LCSD Result LCS Rec. Analyte su su su %

LCSD Rec. %

Rec. Limits %

98.8

98.4-102

5.99

6.00

98.7

LCS Qualifier

LCSD Qualifier RPD % 0.167

RPD Limits %

Cn Sr

PROJECT:

SDG: L885315

Qc Gl Al

1 9

ACCOUNT: SCS Engineers - KS

1 6

6.07

1 3

DATE/TIME: 01/27/17 15:39 15:37

PAGE: 15 of 23

WG946329

QUALITY CONTROL SUMMARY

Wet Chemistry by Method 9056A

ONE LAB. NATIONWIDE.

L885315-01,02,03,04,05,06,07

Method Blank (MB)

(MB) R3192931-1 01/25/17 10:13 MB Result Analyte mg/kg Fluoride

MB Qualifier

MB MDL mg/kg

MB RDL mg/kg

0.261

1.00

L885244-01 Original Sample (OS) • Duplicate (DUP)

(OS) L885244-01 01/25/17 17:34 • (DUP) R3192931-4 01/25/17 17:49 Original Result DUP Result (dry) Dilution DUP RPD (dry) Analyte mg/kg mg/kg % Fluoride

16.2

16.4

DUP Qualifier

DUP RPD Limits

L885315-07 Original Sample (OS) • Duplicate (DUP)

(OS) L885315-07 01/25/17 20:48 • (DUP) R3192931-7 01/25/17 21:03 Original Result DUP Result (dry) Dilution DUP RPD (dry) Analyte mg/kg mg/kg %

DUP Qualifier

Fluoride

8.23

10.7

DUP RPD Limits

% 15

Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3192931-2 01/25/17 10:28 • (LCSD) R3192931-3 01/25/17 10:43 Spike Amount LCS Result LCSD Result Analyte mg/kg mg/kg mg/kg

LCS Rec. %

LCSD Rec. %

Rec. Limits %

Fluoride

105

101

80-120

20.0

21.0

20.3

LCS Qualifier

LCSD Qualifier RPD %

RPD Limits %

MS Qualifier

MSD Qualifier

L885315-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L885315-01 01/25/17 18:19 • (MS) R3192931-5 01/25/17 18:34 • (MSD) R3192931-6 01/25/17 18:49 Spike Amount Original Result MS Result (dry) MSD Result MS Rec. MSD Rec. (dry) (dry) (dry) Analyte mg/kg mg/kg mg/kg mg/kg % %

Dilution

Fluoride

63.7

ACCOUNT: SCS Engineers - KS

9.26

43.8

46.2

PROJECT:

Rec. Limits % 80-120

SDG: L885315

RPD

RPD Limits

DATE/TIME: 01/27/17 15:39 15:37

PAGE: 16 of 23

Cp Tc Ss Cn Sr Qc Gl Al Sc

WG945968

QUALITY CONTROL SUMMARY

Mercury by Method 7471A

ONE LAB. NATIONWIDE.

L885315-01,02,03,04,05,06,07

Method Blank (MB)

(MB) R3192739-6 01/25/17 13:33 MB Result Analyte mg/kg Mercury

MB Qualifier

0.12

MB MDL mg/kg

MB RDL mg/kg

0.0028

0.0200

Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3192739-2 01/25/17 09:48 • (LCSD) R3192739-3 01/25/17 09:51 Spike Amount LCS Result LCSD Result LCS Rec. Analyte mg/kg mg/kg mg/kg %

LCSD Rec. %

Rec. Limits %

Mercury

80-120

0.300

0.272

0.260

LCS Qualifier

LCSD Qualifier RPD % 5

RPD Limits %

L885270-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD)

Dilution

Mercury

0.300

0.291

0.270

Rec. Limits % 75-125

MS Qualifier

MSD Qualifier

RPD %

RPD Limits %

ACCOUNT: SCS Engineers - KS

PROJECT:

SDG: L885315

Tc Ss Cn Sr

20 6

(OS) L885270-01 01/25/17 09:54 • (MS) R3192739-4 01/25/17 09:56 • (MSD) R3192739-5 01/25/17 10:06 Spike Amount Original Result MS Result MSD Result MS Rec. MSD Rec. Analyte mg/kg mg/kg mg/kg mg/kg % %

DATE/TIME: 01/27/17 15:39 15:37

PAGE: 17 of 23

Qc Gl Al Sc

WG945529

QUALITY CONTROL SUMMARY

Metals (ICP) by Method 6010B

ONE LAB. NATIONWIDE.

L885315-01,02,03,04,05,06,07

Method Blank (MB)

(MB) R3193240-8 01/27/17 12:57 MB Result Analyte mg/kg Aluminum Arsenic Barium Boron Cadmium Chromium Lead Selenium Silver

MB Qualifier

U U U U U U U U U

MB MDL mg/kg

MB RDL mg/kg

3.5 0.65 0.17 1.26 0.07 0.14 0.19 0.74 0.28

10.0 2.00 0.500 10.0 0.500 1.00 0.500 2.00 1.00

Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3193240-2 01/27/17 11:28 • (LCSD) R3193240-3 01/27/17 11:30 Spike Amount LCS Result LCSD Result Analyte mg/kg mg/kg mg/kg

LCS Rec. %

LCSD Rec. %

Rec. Limits %

Aluminum Arsenic Barium Boron Cadmium Chromium Lead Selenium Silver

105 105 110 103 105 106 105 104 92

116 107 113 106 107 108 107 106 95

80-120 80-120 80-120 80-120 80-120 80-120 80-120 80-120 80-120

1000 100 100 100 100 100 100 100 20.0

1050 105 110 103 105 106 105 104 18.5

1160 107 113 106 107 108 107 106 18.9

LCS Qualifier

LCSD Qualifier RPD %

RPD Limits %

10 2 3 3 2 2 2 2 2

20 20 20 20 20 20 20 20 20

MS Qualifier

MSD Qualifier

J3 V

L885278-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L885278-01 01/27/17 11:33 • (MS) R3193240-6 01/27/17 11:41 • (MSD) R3193240-7 01/27/17 11:43 Spike Amount Original Result MS Result (dry) MSD Result MS Rec. (dry) (dry) (dry) Analyte mg/kg mg/kg mg/kg mg/kg %

MSD Rec.

Aluminum Arsenic Barium

1230 123 123

8030 3.14 159

4680 127 227

6060 130 232

0 101 55

0 103 60

1 1 1

75-125 75-125 75-125

Boron Cadmium Chromium Lead Selenium Silver

123 123 123 123 123 24.6

7.66 0.494 159 49.6 U U

127 126 135 161 125 22.3

124 124 171 165 122 21.8

97 102 0 91 102 91

95 100 10 93 99 88

1 1 1 1 1 1

75-125 75-125 75-125 75-125 75-125 75-125

ACCOUNT: SCS Engineers - KS

PROJECT:

Dilution

Rec. Limits %

SDG: L885315

J3 J6

RPD

RPD Limits

26 2 2

20 20 20

2 2 23 2 2 3

20 20 20 20 20 20

DATE/TIME: 01/27/17 15:39 15:37

PAGE: 18 of 23

Cp Tc Ss Cn Sr Qc Gl Al Sc

GLOSSARY OF TERMS

ONE LAB. NATIONWIDE.

Abbreviations and Definitions SDG MDL RDL ND U RPD (dry)

Rec.

Sample Delivery Group. Method Detection Limit. Reported Detection Limit. Not detected at the Reporting Limit (or MDL where applicable). Not detected at the Reporting Limit (or MDL where applicable). Relative Percent Difference. Results are reported based on the dry weight of the sample. [this will only be present on a dry report basis for soils]. The non-spiked sample in the prep batch used to determine the Relative Percent Difference (RPD) from a quality control sample. The Original Sample may not be included within the reported SDG. Recovery.

Qualifier

Description

J3 J6

The associated batch QC was outside the established quality control range for precision. The sample matrix interfered with the ability to make any accurate determination; spike value is low. The sample concentration is too high to evaluate accurate spike recoveries.

Original Sample

ACCOUNT: SCS Engineers - KS

PROJECT:

SDG: L885315

DATE/TIME: 01/27/17 15:39 15:37

PAGE: 19 of 23

Cp Tc Ss Cn Sr Qc Gl Al Sc

ACCREDITATIONS & LOCATIONS

ONE LAB. NATIONWIDE.

ESC Lab Sciences is the only environmental laboratory accredited/certified to support your work nationwide from one location. One phone call, one point of contact, one laboratory. No other lab is as accessible or prepared to handle your needs throughout the country. Our capacity and capability from our single location laboratory is comparable to the collective totals of the network laboratories in our industry. The most significant benefit to our “one location” design is the design of our laboratory campus. The model is conducive to accelerated productivity, decreasing turn-around time, and preventing cross contamination, thus protecting sample integrity. Our focus on premium quality and prompt service allows us to be YOUR LAB OF CHOICE. * Not all certifications held by the laboratory are applicable to the results reported in the attached report.

State Accreditations Alabama Alaska Arizona Arkansas California Colorado Conneticut Florida Georgia Georgia 1 Idaho Illinois Indiana Iowa Kansas Kentucky 1 Kentucky 2 Louisiana Maine Maryland Massachusetts Michigan Minnesota Mississippi Missouri Montana Nebraska

40660 UST-080 AZ0612 88-0469 01157CA TN00003 PH-0197 E87487 NELAP 923 TN00003 200008 C-TN-01 364 E-10277 90010 16 AI30792 TN0002 324 M-TN003 9958 047-999-395 TN00003 340 CERT0086 NE-OS-15-05

Nevada New Hampshire New Jersey–NELAP New Mexico New York North Carolina North Carolina 1 North Carolina 2 North Dakota Ohio–VAP Oklahoma Oregon Pennsylvania Rhode Island South Carolina South Dakota Tennessee 1 4 Texas Texas 5 Utah Vermont Virginia Washington West Virginia Wisconsin Wyoming

TN-03-2002-34 2975 TN002 TN00003 11742 Env375 DW21704 41 R-140 CL0069 9915 TN200002 68-02979 221 84004 n/a 2006 T 104704245-07-TX LAB0152 6157585858 VT2006 109 C1915 233 9980939910 A2LA

Third Party & Federal Accreditations A2LA – ISO 17025 A2LA – ISO 17025 5 Canada EPA–Crypto 1.

1461.01 1461.02 1461.01 TN00003

100789 1461.01 S-67674

AIHA DOD USDA

Drinking Water 2. Underground Storage Tanks 3. Aquatic Toxicity 4. Chemical/Microbiological 5. Mold n/a Accreditation not applicable

Our Locations ESC Lab Sciences has sixty-four client support centers that provide sample pickup and/or the delivery of sampling supplies. If you would like assistance from one of our support offices, please contact our main office. ESC Lab Sciences performs all testing at our central laboratory.

ACCOUNT: SCS Engineers - KS

PROJECT:

SDG: L885315

DATE/TIME: 01/27/17 15:39 15:37

PAGE: 20 of 23

Cp Tc Ss Cn Sr Qc Gl Al Sc

ANALYTICAL REPORT F ebruary 16, 2017

SCS Engineers - KS Sample Delivery Group:

L889149

Samples Received:

02/09/2017

Project Number: Description:

Independence Power and Light

Report To:

Patrick Goeke 7311 West 130th Street, Ste. 100 Overland Park, KS 66213

Entire Report Reviewed By:

12065 Lebanon Rd

Mount Juliet, TN 37122

615-758-5858

800-767-5859

www.esclabsciences.com

TABLE OF CONTENTS

ONE LAB. NATIONWIDE.

¹Cp: Cover Page

²Tc: Table of Contents

³Ss: Sample Summary

⁴Cn: Case Narrative

⁵Sr: Sample Results

TP-5 6-12"

L889149-01

TP-6 6-12"

L889149-02

TP-7 6-12"

L889149-03

⁶Qc: Quality Control Summary

Total Solids by Method 2540 G-2011

Wet Chemistry by Method 9045D

Wet Chemistry by Method 9056A

Metals (ICP) by Method 6010B

⁷Gl: Glossary of Terms

⁸Al: Accreditations & Locations

⁹Sc: Chain of Custody

ACCOUNT: SCS Engineers - KS

PROJECT:

SDG: L889149

DATE/TIME: 02/16/17 02/16/1709:46 10:01

PAGE: 2 of 17

Cp Tc Ss Cn Sr Qc Gl Al Sc

SAMPLE SUMMARY

Batch

Metals (ICP) by Method 6010B Total Solids by Method 2540 G-2011 Wet Chemistry by Method 9045D Wet Chemistry by Method 9056A

WG951982 WG951959 WG951242 WG951377

Received date/time 02/09/17 11:30

Collected by Adam Parris

Collected date/time 02/06/17 00:00

Dilution

Preparation date/time

Analysis date/time

Analyst

1 1 1 1

02/14/17 13:56 02/15/17 08:59 02/15/17 10:42 02/13/17 10:27

02/15/17 10:38 02/15/17 09:11 02/15/17 11:49 02/14/17 04:22

CCE KDW MHM KCF

TP-5 6-12" L889149-01 Solid Method

ONE LAB. NATIONWIDE.

Collected date/time 02/06/17 00:00

Dilution

Preparation date/time

Analysis date/time

Analyst

1 1 1 1

02/14/17 13:56 02/15/17 08:59 02/15/17 10:42 02/14/17 11:00

02/15/17 10:46 02/15/17 09:11 02/15/17 11:49 02/14/17 23:35

CCE KDW MHM KCF

TP-6 6-12" L889149-02 Solid Method

Batch

Metals (ICP) by Method 6010B Total Solids by Method 2540 G-2011 Wet Chemistry by Method 9045D Wet Chemistry by Method 9056A

WG951982 WG951959 WG951242 WG951568

Received date/time 02/09/17 11:30

Collected by Adam Parris

Collected date/time 02/06/17 00:00

Dilution

Preparation date/time

Analysis date/time

Analyst

1 1 1 1

02/14/17 13:56 02/15/17 08:59 02/15/17 10:42 02/14/17 11:00

02/15/17 10:49 02/15/17 09:11 02/15/17 11:49 02/14/17 23:55

CCE KDW MHM KCF

TP-7 6-12" L889149-03 Solid Method

Batch

Metals (ICP) by Method 6010B Total Solids by Method 2540 G-2011 Wet Chemistry by Method 9045D Wet Chemistry by Method 9056A

WG951982 WG951959 WG951242 WG951568

ACCOUNT: SCS Engineers - KS

PROJECT:

Received date/time 02/09/17 11:30

Collected by Adam Parris

SDG: L889149

DATE/TIME: 02/16/17 02/16/1709:46 10:01

PAGE: 3 of 17

Cp Tc Ss Cn Sr Qc Gl Al Sc

CASE NARRATIVE

ONE LAB. NATIONWIDE.

[Preliminary Report] 7

Jeff Carr

Technical Service Representative 9

Sample Handling and Receiving The following samples were prepared and/or analyzed past recommended holding time. Concentrations should be considered minimum values. ESC Sample ID Project Sample ID Method L889149-01 TP-5 6-12" 9045D L889149-02 TP-6 6-12" 9045D L889149-03 TP-7 6-12" 9045D

ACCOUNT: SCS Engineers - KS

PROJECT:

SDG: L889149

DATE/TIME: 02/16/17 02/16/1709:46 10:01

PAGE: 4 of 17

Cp Tc Ss Cn Sr Qc Gl Al Sc

TP-5 6-12"

SAMPLE RESULTS - 01

Collected date/time: 02/06/17 00:00

ONE LAB. NATIONWIDE.

L889149

Total Solids by Method 2540 G-2011 Analyte

Result %

Total Solids

79.1

Qualifier

Dilution

Analysis date / time

Batch

02/15/2017 09:11

WG951959

Wet Chemistry by Method 9045D Analyte

Result su

7.77

Qualifier

Dilution

Analysis date / time

Batch

02/15/2017 11:49

WG951242

Sample Narrative: 9045D L889149-01 WG951242: 7.77 at 17.4c 6

Wet Chemistry by Method 9056A Analyte

Result (dry) mg/kg

Fluoride

10.1

Qualifier

RDL (dry) mg/kg

Dilution

Analysis date / time

Batch

1.26

02/14/2017 04:22

WG951377

Cp Tc Ss Cn Sr Qc Gl Al

Metals (ICP) by Method 6010B Analyte

Result (dry) mg/kg

Aluminum Arsenic Barium Boron Chromium Lead

14700 4.95 96.3 ND 15.6 7.44

ACCOUNT: SCS Engineers - KS

Qualifier

RDL (dry) mg/kg

Dilution

Analysis date / time

Batch

12.6 2.53 0.632 12.6 1.26 0.632

1 1 1 1 1 1

02/15/2017 10:38 02/15/2017 10:38 02/15/2017 10:38 02/15/2017 10:38 02/15/2017 10:38 02/15/2017 10:38

WG951982 WG951982 WG951982 WG951982 WG951982 WG951982

PROJECT:

SDG: L889149

DATE/TIME: 02/16/17 02/16/1709:46 10:01

PAGE: 5 of 17

TP-6 6-12"

SAMPLE RESULTS - 02

Collected date/time: 02/06/17 00:00

ONE LAB. NATIONWIDE.

L889149

Total Solids by Method 2540 G-2011 Analyte

Result %

Total Solids

77.2

Qualifier

Dilution

Analysis date / time

Batch

02/15/2017 09:11

WG951959

Wet Chemistry by Method 9045D Analyte

Result su

7.00

Qualifier

Dilution

Analysis date / time

Batch

02/15/2017 11:49

WG951242

Sample Narrative: 9045D L889149-02 WG951242: 7.00 at 18.0c 6

Wet Chemistry by Method 9056A Analyte

Result (dry) mg/kg

Fluoride

10.9

Qualifier

RDL (dry) mg/kg

Dilution

Analysis date / time

Batch

1.30

02/14/2017 23:35

WG951568

Cp Tc Ss Cn Sr Qc Gl Al

Metals (ICP) by Method 6010B Analyte

Result (dry) mg/kg

Aluminum Arsenic Barium Boron Chromium Lead

12000 ND 175 ND 19.7 12.6

ACCOUNT: SCS Engineers - KS

Qualifier

RDL (dry) mg/kg

Dilution

Analysis date / time

Batch

13.0 2.59 0.648 13.0 1.30 0.648

1 1 1 1 1 1

02/15/2017 10:46 02/15/2017 10:46 02/15/2017 10:46 02/15/2017 10:46 02/15/2017 10:46 02/15/2017 10:46

WG951982 WG951982 WG951982 WG951982 WG951982 WG951982

PROJECT:

SDG: L889149

DATE/TIME: 02/16/17 02/16/1709:46 10:01

PAGE: 6 of 17

TP-7 6-12"

SAMPLE RESULTS - 03

Collected date/time: 02/06/17 00:00

ONE LAB. NATIONWIDE.

L889149

Total Solids by Method 2540 G-2011 Analyte

Result %

Total Solids

79.4

Qualifier

Dilution

Analysis date / time

Batch

02/15/2017 09:11

WG951959

Wet Chemistry by Method 9045D Analyte

Result su

7.35

Qualifier

Dilution

Analysis date / time

Batch

02/15/2017 11:49

WG951242

Sample Narrative: 9045D L889149-03 WG951242: 7.35 at 17.8c 6

Wet Chemistry by Method 9056A Analyte

Result (dry) mg/kg

Fluoride

17.0

Qualifier

RDL (dry) mg/kg

Dilution

Analysis date / time

Batch

1.26

02/14/2017 23:55

WG951568

Cp Tc Ss Cn Sr Qc Gl Al

Metals (ICP) by Method 6010B Analyte

Result (dry) mg/kg

Aluminum Arsenic Barium Boron Chromium Lead

15300 3.60 175 ND 15.9 7.47

ACCOUNT: SCS Engineers - KS

Qualifier

RDL (dry) mg/kg

Dilution

Analysis date / time

Batch

12.6 2.52 0.630 12.6 1.26 0.630

1 1 1 1 1 1

02/15/2017 10:49 02/15/2017 10:49 02/15/2017 10:49 02/15/2017 10:49 02/15/2017 10:49 02/15/2017 10:49

WG951982 WG951982 WG951982 WG951982 WG951982 WG951982

PROJECT:

SDG: L889149

DATE/TIME: 02/16/17 02/16/1709:46 10:01

PAGE: 7 of 17

WG951959

QUALITY CONTROL SUMMARY

Total Solids by Method 2540 G-2011

ONE LAB. NATIONWIDE.

L889149-01,02,03

Method Blank (MB)

(MB) R3197084-1 02/15/17 09:11 MB Result Analyte % Total Solids

MB Qualifier

MB MDL %

MB RDL %

0.00120 3

L889134-06 Original Sample (OS) • Duplicate (DUP)

(OS) L889134-06 02/15/17 09:11 • (DUP) R3197084-3 02/15/17 09:11 Original Result DUP Result Dilution DUP RPD Analyte % % % Total Solids

81.7

82.5

DUP Qualifier

1.01

DUP RPD Limits %

Laboratory Control Sample (LCS)

(LCS) R3197084-2 02/15/17 09:11 Spike Amount Analyte %

LCS Result %

LCS Rec. %

Rec. Limits %

Total Solids

50.0

100

85.0-115

Sr Qc Gl

LCS Qualifier 8

ACCOUNT: SCS Engineers - KS

5 6

50.0

PROJECT:

SDG: L889149

DATE/TIME: 02/16/17 02/16/1709:46 10:01

PAGE: 8 of 17

Al Sc

WG951242

QUALITY CONTROL SUMMARY

Wet Chemistry by Method 9045D

ONE LAB. NATIONWIDE.

L889149-01,02,03

L888704-01 Original Sample (OS) • Duplicate (DUP)

(OS) L888704-01 02/15/17 11:49 • (DUP) WG951242-3 02/15/17 11:49 Original Result DUP Result Dilution DUP RPD Analyte su su % pH

7.26

7.24

DUP Qualifier

0.276

DUP RPD Limits %

L889150-03 Original Sample (OS) • Duplicate (DUP)

(OS) L889150-03 02/15/17 11:49 • (DUP) WG951242-4 02/15/17 11:49 Original Result DUP Result Dilution DUP RPD Analyte su su % 7.30

7.31

DUP Qualifier

0.137

DUP RPD Limits %

Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) WG951242-1 02/15/17 11:49 • (LCSD) WG951242-2 02/15/17 11:49 Spike Amount LCS Result LCSD Result LCS Rec. Analyte su su su %

LCSD Rec. %

Rec. Limits %

100

98.4-102

6.11

6.09

101

LCS Qualifier

LCSD Qualifier RPD % 0.328

RPD Limits %

Cn Sr

PROJECT:

SDG: L889149

Qc Gl Al

1 9

ACCOUNT: SCS Engineers - KS

1 6

6.07

1 3

DATE/TIME: 02/16/17 02/16/1709:46 10:01

PAGE: 9 of 17

WG951377

QUALITY CONTROL SUMMARY

Wet Chemistry by Method 9056A

ONE LAB. NATIONWIDE.

L889149-01

Method Blank (MB)

(MB) R3196573-1 02/13/17 16:55 MB Result Analyte mg/kg

MB Qualifier

MB MDL mg/kg

MB RDL mg/kg

Fluoride

0.261

1.00

0.262

L888581-03 Original Sample (OS) • Duplicate (DUP)

(OS) L888581-03 02/13/17 19:39 • (DUP) R3196573-4 02/13/17 20:00 Original Result DUP Result (dry) Dilution DUP RPD (dry) Analyte mg/kg mg/kg %

DUP Qualifier

Fluoride

10.6

DUP RPD Limits

% 15

Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3196573-2 02/13/17 17:16 • (LCSD) R3196573-3 02/13/17 17:36 Spike Amount LCS Result LCSD Result Analyte mg/kg mg/kg mg/kg

LCS Rec. %

LCSD Rec. %

Rec. Limits %

Fluoride

104

80-120

20.0

20.7

LCS Qualifier

LCSD Qualifier RPD %

RPD Limits %

L888932-02 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) Dilution

Fluoride

62.9

ACCOUNT: SCS Engineers - KS

42.6

42.3

PROJECT:

Rec. Limits

MS Qualifier

MSD Qualifier

% 80-120

SDG: L889149

Tc Ss Cn Sr Qc Gl Al

15 9

(OS) L888932-02 02/14/17 02:38 • (MS) R3196573-5 02/14/17 02:59 • (MSD) R3196573-6 02/14/17 03:19 Spike Amount Original Result MS Result (dry) MSD Result MS Rec. MSD Rec. (dry) (dry) (dry) Analyte mg/kg mg/kg mg/kg mg/kg % %

RPD

RPD Limits

DATE/TIME: 02/16/17 02/16/1709:46 10:01

PAGE: 10 of 17

WG951568

QUALITY CONTROL SUMMARY

Wet Chemistry by Method 9056A

ONE LAB. NATIONWIDE.

L889149-02,03

Method Blank (MB)

(MB) R3196815-1 02/14/17 13:38 MB Result Analyte mg/kg Fluoride

MB Qualifier

MB MDL mg/kg

MB RDL mg/kg

0.261

1.00

L888589-01 Original Sample (OS) • Duplicate (DUP)

(OS) L888589-01 02/14/17 15:45 • (DUP) R3196815-4 02/14/17 16:05 Original Result DUP Result (dry) Dilution DUP RPD (dry) Analyte mg/kg mg/kg % Fluoride

69.2

DUP Qualifier

DUP RPD Limits

L889457-01 Original Sample (OS) • Duplicate (DUP)

(OS) L889457-01 02/14/17 21:52 • (DUP) R3196815-7 02/14/17 22:13 Original Result DUP Result Dilution DUP RPD Analyte mg/kg mg/kg % Fluoride

6.79

DUP Qualifier

DUP RPD Limits %

Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3196815-2 02/14/17 13:58 • (LCSD) R3196815-3 02/14/17 14:19 Spike Amount LCS Result LCSD Result Analyte mg/kg mg/kg mg/kg

LCS Rec. %

LCSD Rec. %

Rec. Limits %

Fluoride

100

101

80-120

19.9

20.2

LCS Qualifier

LCSD Qualifier RPD %

RPD Limits %

L889239-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L889239-01 02/14/17 17:06 • (MS) R3196815-5 02/14/17 18:08 • (MSD) R3196815-6 02/14/17 18:28 Spike Amount Original Result MS Result MSD Result MS Rec. MSD Rec. Analyte mg/kg mg/kg mg/kg mg/kg % %

Dilution

Rec. Limits %

MS Qualifier

MSD Qualifier

RPD %

RPD Limits %

Fluoride

80-120

J3 J6

50.0

ACCOUNT: SCS Engineers - KS

6.61

35.2

Tc Ss Cn Sr Qc Gl Al

15 9

20.0

44.8

PROJECT:

SDG: L889149

DATE/TIME: 02/16/17 02/16/1709:46 10:01

PAGE: 11 of 17

WG951982

QUALITY CONTROL SUMMARY

Metals (ICP) by Method 6010B

ONE LAB. NATIONWIDE.

L889149-01,02,03

Method Blank (MB)

(MB) R3196917-1 02/15/17 10:15 MB Result Analyte mg/kg Aluminum Arsenic Barium Boron Chromium Lead

MB Qualifier

U U U U U U

MB MDL mg/kg

MB RDL mg/kg

3.5 0.65 0.17 1.26 0.14 0.19

10.0 2.00 0.500 10.0 1.00 0.500

Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3196917-2 02/15/17 10:18 • (LCSD) R3196917-3 02/15/17 10:20 Spike Amount LCS Result LCSD Result Analyte mg/kg mg/kg mg/kg

LCS Rec. %

LCSD Rec. %

Rec. Limits %

Aluminum Arsenic Barium Boron Chromium Lead

101 100 103 102 102 101

100 98 101 99 100 99

80-120 80-120 80-120 80-120 80-120 80-120

1000 100 100 100 100 100

1010 99.7 103 102 102 101

996 98.2 101 98.8 99.9 99.0

LCS Qualifier

LCSD Qualifier RPD %

RPD Limits %

1 2 2 3 2 2

20 20 20 20 20 20

MS Qualifier

MSD Qualifier

L889155-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L889155-01 02/15/17 10:23 • (MS) R3196917-6 02/15/17 10:30 • (MSD) R3196917-7 02/15/17 10:33 Spike Amount Original Result MS Result (dry) MSD Result MS Rec. MSD Rec. (dry) (dry) (dry) Analyte mg/kg mg/kg mg/kg mg/kg % %

Dilution

Aluminum Arsenic Barium Boron Chromium Lead

1 1 1 1 1 1

1110 111 111 111 111 111

ACCOUNT: SCS Engineers - KS

5080 2.42 68.9 1.85 9.82 7.73

6410 109 146 106 120 122

7030 108 170 104 119 123

120 95 69 93 99 103

PROJECT:

175 95 91 91 98 103

Rec. Limits % 75-125 75-125 75-125 75-125 75-125 75-125

SDG: L889149

V J6

RPD

RPD Limits

9 1 15 2 1 1

20 20 20 20 20 20

DATE/TIME: 02/16/17 02/16/1709:46 10:01

PAGE: 12 of 17

Cp Tc Ss Cn Sr Qc Gl Al Sc

GLOSSARY OF TERMS

ONE LAB. NATIONWIDE.

Abbreviations and Definitions SDG MDL RDL ND U RPD (dry)

Rec.

Qualifier

Description

J J3 J6

The identification of the analyte is acceptable; the reported value is an estimate. The associated batch QC was outside the established quality control range for precision. The sample matrix interfered with the ability to make any accurate determination; spike value is low. The sample concentration is too high to evaluate accurate spike recoveries.

Original Sample

ACCOUNT: SCS Engineers - KS

PROJECT:

SDG: L889149

DATE/TIME: 02/16/17 02/16/1709:46 10:01

PAGE: 13 of 17

Cp Tc Ss Cn Sr Qc Gl Al Sc

ACCREDITATIONS & LOCATIONS

ONE LAB. NATIONWIDE.

40660 UST-080 AZ0612 88-0469 01157CA TN00003 PH-0197 E87487 NELAP 923 TN00003 200008 C-TN-01 364 E-10277 90010 16 AI30792 TN0002 324 M-TN003 9958 047-999-395 TN00003 340 CERT0086 NE-OS-15-05

TN-03-2002-34 2975 TN002 TN00003 11742 Env375 DW21704 41 R-140 CL0069 9915 TN200002 68-02979 221 84004 n/a 2006 T 104704245-07-TX LAB0152 6157585858 VT2006 109 C1915 233 9980939910 A2LA

Third Party & Federal Accreditations A2LA – ISO 17025 A2LA – ISO 17025 5 Canada EPA–Crypto 1.

1461.01 1461.02 1461.01 TN00003

100789 1461.01 S-67674

AIHA DOD USDA

Drinking Water 2. Underground Storage Tanks 3. Aquatic Toxicity 4. Chemical/Microbiological 5. Mold n/a Accreditation not applicable

ACCOUNT: SCS Engineers - KS

PROJECT:

SDG: L889149

DATE/TIME: 02/16/17 02/16/1709:46 10:01

PAGE: 14 of 17

Cp Tc Ss Cn Sr Qc Gl Al Sc

ANALYTICAL REPORT F ebruary 16, 2017

SCS Engineers - KS Sample Delivery Group:

L889150

Samples Received:

02/09/2017

Project Number:

27215142

Description:

independence Power and Light

Report To:

Patrick Goeke 7311 West 130th Street, Ste. 100 Overland Park, KS 66213

Entire Report Reviewed By:

12065 Lebanon Rd

Mount Juliet, TN 37122

615-758-5858

800-767-5859

www.esclabsciences.com

TABLE OF CONTENTS

ONE LAB. NATIONWIDE.

¹Cp: Cover Page

²Tc: Table of Contents

³Ss: Sample Summary

⁴Cn: Case Narrative

⁵Sr: Sample Results

TP-5 WASTE

L889150-01

TP-6-6-12' WASTE

L889150-02

TP-7 0-8' WASTE

L889150-03

⁶Qc: Quality Control Summary

Tc Ss Cn Sr

8 6

Total Solids by Method 2540 G-2011

Wet Chemistry by Method 9045D

Wet Chemistry by Method 9056A

Metals (ICP) by Method 6010B

⁷Gl: Glossary of Terms

⁸Al: Accreditations & Locations

⁹Sc: Chain of Custody

ACCOUNT: SCS Engineers - KS

PROJECT: 27215142

SDG: L889150

DATE/TIME: 02/16/17 09:49 09:57

PAGE: 2 of 14

Qc Gl Al Sc

SAMPLE SUMMARY Collected by

TP-5 WASTE L889150-01 Solid Method

Batch

Metals (ICP) by Method 6010B Total Solids by Method 2540 G-2011 Wet Chemistry by Method 9045D Wet Chemistry by Method 9056A

WG951982 WG951959 WG951242 WG951568

ONE LAB. NATIONWIDE. Collected date/time 02/08/17 00:00

Received date/time 02/09/17 11:30

Dilution

Preparation date/time

Analysis date/time

Analyst

1 1 1 1

02/14/17 13:56 02/15/17 08:59 02/15/17 10:42 02/14/17 11:00

02/15/17 10:51 02/15/17 09:11 02/15/17 11:49 02/15/17 00:16

CCE KDW MHM KCF

Collected by

TP-6-6-12' WASTE L889150-02 Solid Method

Batch

Metals (ICP) by Method 6010B Total Solids by Method 2540 G-2011 Wet Chemistry by Method 9045D Wet Chemistry by Method 9056A

WG951982 WG951959 WG951242 WG951568

Collected date/time 02/08/17 00:00

Received date/time 02/09/17 11:30

Dilution

Preparation date/time

Analysis date/time

Analyst

1 1 1 1

02/14/17 13:56 02/15/17 08:59 02/15/17 10:42 02/14/17 11:00

02/15/17 10:54 02/15/17 09:11 02/15/17 11:49 02/15/17 00:36

CCE KDW MHM KCF

Collected by

TP-7 0-8' WASTE L889150-03 Solid Method

Batch

Metals (ICP) by Method 6010B Total Solids by Method 2540 G-2011 Wet Chemistry by Method 9045D Wet Chemistry by Method 9056A

WG951982 WG951959 WG951242 WG951568

ACCOUNT: SCS Engineers - KS

PROJECT: 27215142

Collected date/time 02/08/17 00:00

Received date/time 02/09/17 11:30

Dilution

Preparation date/time

Analysis date/time

Analyst

1 1 1 1

02/14/17 13:56 02/15/17 08:59 02/15/17 10:42 02/14/17 11:00

02/15/17 10:57 02/15/17 09:11 02/15/17 11:49 02/15/17 01:37

CCE KDW MHM KCF

SDG: L889150

DATE/TIME: 02/16/17 09:49 09:57

PAGE: 3 of 14

Cp Tc Ss Cn Sr Qc Gl Al Sc

CASE NARRATIVE

ONE LAB. NATIONWIDE.

[Preliminary Report] 7

Jeff Carr

Technical Service Representative 9

Sample Handling and Receiving The following samples were prepared and/or analyzed past recommended holding time. Concentrations should be considered minimum values. ESC Sample ID Project Sample ID Method L889150-01 TP-5 WASTE 9045D L889150-02 TP-6-6-12' WASTE 9045D L889150-03 TP-7 0-8' WASTE 9045D

ACCOUNT: SCS Engineers - KS

PROJECT: 27215142

SDG: L889150

DATE/TIME: 02/16/17 09:49 09:57

PAGE: 4 of 14

Cp Tc Ss Cn Sr Qc Gl Al Sc

TP-5 WASTE

SAMPLE RESULTS - 01

Collected date/time: 02/08/17 00:00

ONE LAB. NATIONWIDE.

L889150

Total Solids by Method 2540 G-2011 Analyte

Result %

Total Solids

46.7

Qualifier

Dilution

Analysis date / time

Batch

02/15/2017 09:11

WG951959

Wet Chemistry by Method 9045D Analyte

Result su

9.39

Qualifier

Dilution

Analysis date / time

Batch

02/15/2017 11:49

WG951242

Sample Narrative: 9045D L889150-01 WG951242: 9.39 at 18.1c 6

Wet Chemistry by Method 9056A Analyte

Result (dry) mg/kg

Fluoride

Qualifier

RDL (dry) mg/kg

Dilution

Analysis date / time

Batch

2.14

02/15/2017 00:16

WG951568

Cp Tc Ss Cn Sr Qc Gl Al

Metals (ICP) by Method 6010B Analyte

Result (dry) mg/kg

Aluminum Arsenic Barium Boron Chromium Lead

15200 46.4 857 241 29.1 214

ACCOUNT: SCS Engineers - KS

Qualifier

RDL (dry) mg/kg

Dilution

Analysis date / time

Batch

21.4 4.28 1.07 21.4 2.14 1.07

1 1 1 1 1 1

02/15/2017 10:51 02/15/2017 10:51 02/15/2017 10:51 02/15/2017 10:51 02/15/2017 10:51 02/15/2017 10:51

WG951982 WG951982 WG951982 WG951982 WG951982 WG951982

PROJECT: 27215142

SDG: L889150

DATE/TIME: 02/16/17 09:49 09:57

PAGE: 5 of 14

TP-6-6-12' WASTE

SAMPLE RESULTS - 02

Collected date/time: 02/08/17 00:00

ONE LAB. NATIONWIDE.

L889150

Total Solids by Method 2540 G-2011 Analyte

Result %

Total Solids

80.6

Qualifier

Dilution

Analysis date / time

Batch

02/15/2017 09:11

WG951959

Wet Chemistry by Method 9045D Analyte

Result su

7.22

Qualifier

Dilution

Analysis date / time

Batch

02/15/2017 11:49

WG951242

Sample Narrative: 9045D L889150-02 WG951242: 7.22 at 18.1c 6

Wet Chemistry by Method 9056A Analyte

Result (dry) mg/kg

Fluoride

12.9

Qualifier

RDL (dry) mg/kg

Dilution

Analysis date / time

Batch

1.24

02/15/2017 00:36

WG951568

Cp Tc Ss Cn Sr Qc Gl Al

Metals (ICP) by Method 6010B Analyte

Result (dry) mg/kg

Aluminum Arsenic Barium Boron Chromium Lead

9710 3.23 61.4 ND 12.3 8.66

ACCOUNT: SCS Engineers - KS

Qualifier

RDL (dry) mg/kg

Dilution

Analysis date / time

Batch

12.4 2.48 0.620 12.4 1.24 0.620

1 1 1 1 1 1

02/15/2017 10:54 02/15/2017 10:54 02/15/2017 10:54 02/15/2017 10:54 02/15/2017 10:54 02/15/2017 10:54

WG951982 WG951982 WG951982 WG951982 WG951982 WG951982

PROJECT: 27215142

SDG: L889150

DATE/TIME: 02/16/17 09:49 09:57

PAGE: 6 of 14

TP-7 0-8' WASTE

SAMPLE RESULTS - 03

Collected date/time: 02/08/17 00:00

ONE LAB. NATIONWIDE.

L889150

Total Solids by Method 2540 G-2011 Analyte

Result %

Total Solids

80.1

Qualifier

Dilution

Analysis date / time

Batch

02/15/2017 09:11

WG951959

Wet Chemistry by Method 9045D Analyte

Result su

7.30

Qualifier

Dilution

Analysis date / time

Batch

02/15/2017 11:49

WG951242

Sample Narrative: 9045D L889150-03 WG951242: 7.30 at 18.0c 6

Wet Chemistry by Method 9056A Analyte

Result (dry) mg/kg

Fluoride

8.18

Qualifier

RDL (dry) mg/kg

Dilution

Analysis date / time

Batch

1.25

02/15/2017 01:37

WG951568

Cp Tc Ss Cn Sr Qc Gl Al

Metals (ICP) by Method 6010B Analyte

Result (dry) mg/kg

Aluminum Arsenic Barium Boron Chromium Lead

7180 4.29 254 ND 9.79 14.0

ACCOUNT: SCS Engineers - KS

Qualifier

RDL (dry) mg/kg

Dilution

Analysis date / time

Batch

12.5 2.50 0.624 12.5 1.25 0.624

1 1 1 1 1 1

02/15/2017 10:57 02/15/2017 10:57 02/15/2017 10:57 02/15/2017 10:57 02/15/2017 10:57 02/15/2017 10:57

WG951982 WG951982 WG951982 WG951982 WG951982 WG951982

PROJECT: 27215142

SDG: L889150

DATE/TIME: 02/16/17 09:49 09:57

PAGE: 7 of 14

WG951959

QUALITY CONTROL SUMMARY

Total Solids by Method 2540 G-2011

ONE LAB. NATIONWIDE.

L889150-01,02,03

Method Blank (MB)

(MB) R3197084-1 02/15/17 09:11 MB Result Analyte % Total Solids

MB Qualifier

MB MDL %

MB RDL %

0.00120 3

L889134-06 Original Sample (OS) • Duplicate (DUP)

(OS) L889134-06 02/15/17 09:11 • (DUP) R3197084-3 02/15/17 09:11 Original Result DUP Result Dilution DUP RPD Analyte % % % Total Solids

81.7

82.5

DUP Qualifier

1.01

DUP RPD Limits %

Laboratory Control Sample (LCS)

(LCS) R3197084-2 02/15/17 09:11 Spike Amount Analyte %

LCS Result %

LCS Rec. %

Rec. Limits %

Total Solids

50.0

100

85.0-115

Sr Qc Gl

LCS Qualifier 8

ACCOUNT: SCS Engineers - KS

5 6

50.0

PROJECT: 27215142

SDG: L889150

DATE/TIME: 02/16/17 09:49 09:57

PAGE: 8 of 14

Al Sc

WG951242

QUALITY CONTROL SUMMARY

Wet Chemistry by Method 9045D

ONE LAB. NATIONWIDE.

L889150-01,02,03

L888704-01 Original Sample (OS) • Duplicate (DUP)

(OS) L888704-01 02/15/17 11:49 • (DUP) WG951242-3 02/15/17 11:49 Original Result DUP Result Dilution DUP RPD Analyte su su % pH

7.26

7.24

DUP Qualifier

0.276

DUP RPD Limits %

L889150-03 Original Sample (OS) • Duplicate (DUP)

(OS) L889150-03 02/15/17 11:49 • (DUP) WG951242-4 02/15/17 11:49 Original Result DUP Result Dilution DUP RPD Analyte su su % 7.30

7.31

DUP Qualifier

0.137

DUP RPD Limits %

LCSD Rec. %

Rec. Limits %

100

98.4-102

6.11

6.09

101

LCS Qualifier

LCSD Qualifier RPD % 0.328

RPD Limits %

Cn Sr

PROJECT: 27215142

SDG: L889150

Qc Gl Al

1 9

ACCOUNT: SCS Engineers - KS

1 6

6.07

1 3

DATE/TIME: 02/16/17 09:49 09:57

PAGE: 9 of 14

WG951568

QUALITY CONTROL SUMMARY

Wet Chemistry by Method 9056A

ONE LAB. NATIONWIDE.

L889150-01,02,03

Method Blank (MB)

(MB) R3196815-1 02/14/17 13:38 MB Result Analyte mg/kg Fluoride

MB Qualifier

MB MDL mg/kg

MB RDL mg/kg

0.261

1.00

L888589-01 Original Sample (OS) • Duplicate (DUP)

(OS) L888589-01 02/14/17 15:45 • (DUP) R3196815-4 02/14/17 16:05 Original Result DUP Result (dry) Dilution DUP RPD (dry) Analyte mg/kg mg/kg % Fluoride

69.2

DUP Qualifier

DUP RPD Limits

L889457-01 Original Sample (OS) • Duplicate (DUP)

(OS) L889457-01 02/14/17 21:52 • (DUP) R3196815-7 02/14/17 22:13 Original Result DUP Result Dilution DUP RPD Analyte mg/kg mg/kg % Fluoride

6.79

DUP Qualifier

DUP RPD Limits %

LCS Rec. %

LCSD Rec. %

Rec. Limits %

Fluoride

100

101

80-120

19.9

20.2

LCS Qualifier

LCSD Qualifier RPD %

RPD Limits %

Dilution

Rec. Limits %

MS Qualifier

MSD Qualifier

RPD %

RPD Limits %

Fluoride

80-120

J3 J6

50.0

ACCOUNT: SCS Engineers - KS

6.61

35.2

Tc Ss Cn Sr Qc Gl Al

15 9

20.0

44.8

PROJECT: 27215142

SDG: L889150

DATE/TIME: 02/16/17 09:49 09:57

PAGE: 10 of 14

WG951982

QUALITY CONTROL SUMMARY

Metals (ICP) by Method 6010B

ONE LAB. NATIONWIDE.

L889150-01,02,03

Method Blank (MB)

(MB) R3196917-1 02/15/17 10:15 MB Result Analyte mg/kg Aluminum Arsenic Barium Boron Chromium Lead

MB Qualifier

U U U U U U

MB MDL mg/kg

MB RDL mg/kg

3.5 0.65 0.17 1.26 0.14 0.19

10.0 2.00 0.500 10.0 1.00 0.500

LCS Rec. %

LCSD Rec. %

Rec. Limits %

Aluminum Arsenic Barium Boron Chromium Lead

101 100 103 102 102 101

100 98 101 99 100 99

80-120 80-120 80-120 80-120 80-120 80-120

1000 100 100 100 100 100

1010 99.7 103 102 102 101

996 98.2 101 98.8 99.9 99.0

LCS Qualifier

LCSD Qualifier RPD %

RPD Limits %

1 2 2 3 2 2

20 20 20 20 20 20

MS Qualifier

MSD Qualifier

Dilution

Aluminum Arsenic Barium Boron Chromium Lead

1 1 1 1 1 1

1110 111 111 111 111 111

ACCOUNT: SCS Engineers - KS

5080 2.42 68.9 1.85 9.82 7.73

6410 109 146 106 120 122

7030 108 170 104 119 123

120 95 69 93 99 103

PROJECT: 27215142

175 95 91 91 98 103

Rec. Limits % 75-125 75-125 75-125 75-125 75-125 75-125

SDG: L889150

V J6

RPD

RPD Limits

9 1 15 2 1 1

20 20 20 20 20 20

DATE/TIME: 02/16/17 09:49 09:57

PAGE: 11 of 14

Cp Tc Ss Cn Sr Qc Gl Al Sc

GLOSSARY OF TERMS

ONE LAB. NATIONWIDE.

Abbreviations and Definitions SDG MDL RDL ND U RPD (dry)

Rec.

Qualifier

Description

J3 J6

Original Sample

ACCOUNT: SCS Engineers - KS

PROJECT: 27215142

SDG: L889150

DATE/TIME: 02/16/17 09:49 09:57

PAGE: 12 of 14

Cp Tc Ss Cn Sr Qc Gl Al Sc

ACCREDITATIONS & LOCATIONS

ONE LAB. NATIONWIDE.

40660 UST-080 AZ0612 88-0469 01157CA TN00003 PH-0197 E87487 NELAP 923 TN00003 200008 C-TN-01 364 E-10277 90010 16 AI30792 TN0002 324 M-TN003 9958 047-999-395 TN00003 340 CERT0086 NE-OS-15-05

TN-03-2002-34 2975 TN002 TN00003 11742 Env375 DW21704 41 R-140 CL0069 9915 TN200002 68-02979 221 84004 n/a 2006 T 104704245-07-TX LAB0152 6157585858 VT2006 109 C1915 233 9980939910 A2LA

Third Party & Federal Accreditations A2LA – ISO 17025 A2LA – ISO 17025 5 Canada EPA–Crypto 1.

1461.01 1461.02 1461.01 TN00003

100789 1461.01 S-67674

AIHA DOD USDA

Drinking Water 2. Underground Storage Tanks 3. Aquatic Toxicity 4. Chemical/Microbiological 5. Mold n/a Accreditation not applicable

ACCOUNT: SCS Engineers - KS

PROJECT: 27215142

SDG: L889150

DATE/TIME: 02/16/17 09:49 09:57

PAGE: 13 of 14

Cp Tc Ss Cn Sr Qc Gl Al Sc

APPENDIX B ANALYTE SUMMARY GRAPHS

Aluminum

Arsenic Closure Sample Background

Concentration, mg/kg x 1,000

2 Closure Samples Background

300

Chromium

Barium

Concentration, mg/kg x 1,000

250

200

150

100

50 Closure Sample

Closure Sample Background

Background

Lead

Concentration, mg/kg x 1,000

Fluoride

10 4

5 2 Closure Sample

Closure Sample

Background

APPENDIX C TEST PIT LOCATION FIGURE

Appendix G Final As-Built Survey

INDEPENDENCE POWER & LIGHT BLUE VALLEY POWER STATION ASH IMPOUNDMENT CLOSURE 21500 E. TRUMAN RD, INDEPENDENCE, MISSOURI

NOTES 1. CONTOURS SHOWN ON SURVEY ARE TAKEN FROM FIELD SURVEY SHOTS FEBURARY 2018 2. CONTOUR ELEVATIONS ARE SHOWN AT (1) FOOT INTERTVALS

LEGEND 700

CONTOUR ELEVATION GRAVEL ACCESS ROAD

RIP/ RAP AREA

AS-BUILT SURVEY ASH IMPOUNDMENT CLOSURE