NORTH LAKE TAPPS PARK 2017 Master Plan
December 8, 2017 2
ACKNOWLEDGMENTS PIERCE COUNTY EXECUTIVE Bruce Dammeier PIERCE COUNTY COUNCIL Dan Roach Pam Roach Jim McCune Connie Ladenburg Rich Talbert Douglas Richardson Derek Young P I E R C E C O U N T Y PA R K S Roxanne Miles, Director Kimberly Freeman, Superintendent of Resource Stewardship Benjamin Barrett, Capital Projects Manager Joseph Coppo, Senior Planner Kyle Wintermute, General Manager Scott Hall, Recreation Superintendent Rebecca Little, Parks Specialist PA R K S C I T I Z E N S A D V I S O R Y B O A R D Karen Ansteth, Chair Nancy Hatch, Vice Chair Mary Brickle Rickey Clousing Joan Cross Caleb Heimlich Dave Morell Candace Paris-Sundsmo S TA K E H O L D E R S City of Bonney Lake Parks and Recreation Boating Association Bonneville Power Administration Puget Sound Energy Cascade Water Alliance Neighborhood Association(s) C O N S U LTA N T S HBB Landscape Architecture KPFF Consulting Engineers
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North Lake Tapps Park is one of only a few locations that offer public access to Lake Tapps. As Pierce County experiences unprecedented growth, recreational use and activities at Lake Tapps are increasing annually. The 135-acre park is mostly undeveloped but provides a healthy forest, views of Mt. Rainier, and waterfront access and amenities along the shoreline. Based on existing conditions, historical background, environmental systems, and community input, the North Lake Tapps Park Master Plan provides a vision and guide for the future design and development of the park. The recent 55 acre “Hille Lake” land acquisition increases the opportunities for natural recreation experiences and expanding the existing park uses. Opportunities include additional water access, additional parking, walking trails, and year-round play areas for various age groups. A comprehensive public process helped define the three primary goals for improvements to the park: Expand and diversify activities throughout the park Expand and improve access to the shoreline Improve parking and circulation Pierce County Parks and Recreation is dedicated to providing a high level of service, safe and accessible recreation, and appropriate park programming that is sensitive to the recreational needs of park users as well as to the surrounding natural environment.
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TABLE OF CONTENTS EXECUTIVE SUMMARY
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BACKGROUND
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EXISTING CONDITIONS
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DESIGN PROCESS PROS Plan Update PROS Plan Vision Online Open House Concept Plan Project Goals
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FINAL MASTER PLAN Final Master Plan Waterfront Concept Sketch Phasing & Proposed Improvements
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APPENDICES A: Bulkhead Evaluation B: Wetland Delineation Memo C: Cost Estimate
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BACKGROUND
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North Lake Tapps Park is located on the North-Eastern edge of Lake Tapps in Bonney Lake, Washington. The park serves as an outstanding recreational resource and offers public access to the Lake. The boat launch and the 10,000 linear feet of shoreline draw in an estimated 250,000 people per year. The summer months are so popular that the park gates must be closed when maximum parking capacity is reached. North Lake Tapps’ original park plan was designed in 1970 to accommodate half the amount of visitors it sees today. The 135 acre park boasts a healthy forest, with the park’s infrastructure for vehicles and pedestrians lining only the park’s shoreline. The ever-increasing popularity of the waterfront comes with consequences to park programs and amenities. Today’s challenges include: Heavy use along the shoreline while the rest of the park is unused. Vehicular and boating infrastructure nearest the waterfront makes vehicular and pedestrian circulation unsafe. Insufficient parking within the park, causing park users to park along the road and in nearby neighborhoods. The deteriorating bulkhead threatens the parks most popular peninsula. Based on the existing conditions and community input, the master plan for North Lake Tapps Park integrates vehicular and pedestrian infrastructure for safe and accessible circulation, provides a diversity of activities, utilizes more areas of the park, provides additional and improved southern waterfront access, and replaces the bulkhead.
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EXISTING CONDITIONS
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B O AT L A U N C H Two boat ramps are provided at the western edge of the park. This launch is the only public boat launch on the lake. Trailer parking is limited to 55 spaces. Boat access is closed November through March when the lake level is normally low.
SWIMMING The park includes approximately 2,300 out of the available 10,000 linear feet of waterfront access for swimming.
FISHING The lake offers year-round fishing opportunities for largemouth and small-mouth bass, tiger muskies, yellow perch, and black crappie.
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TRAILS The existing trail network is made up of narrow “foot trails� suitable for walking/running and hiking throughout the forested areas of the park. This is an underutilized space and can be improved by formalizing a network of trails, while addressing accessibility and connectivity.
OPEN LAWN Open lawn can be found adjacent to the peninsulas for passive recreation. The amount of available open space is insufficient to accommodate the current summer demands.
PICNIC Fixed picnic tables and barbecue grills are available along the lake edge on a first-come, first-serve basis.
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RESTROOMS An inoperable restroom is located along the southeastern road (right). Three functioning restrooms are included in the concessions building (below).
CONCESSIONS A seasonal concessions/restroom building is open during May through September (Memorial Day to Labor Day). Boat parking is available to allow short-term/temporary access to the building.
C A R E TA K E R ’ S R E S I D E N C E A full-time caretaker lives on-site to maintain the park and collect parking fees.
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PA R K I N G There are currently 192 existing formal parking spaces and 52 existing boat parking spaces. Parking is limited and controls capacity in the park. Parking spaces are currently located in multiple separated, paved and unpaved areas. During the warmer months, the parking lots fill up, and visitors park on roadsides and in the adjacent neighborhoods.
ROADS The only entrance to the park is located at the uncontrolled intersection of 12th St E and 198th Ave. There is one main paved road (198th Ave E / County Park Rd) that provides access to the entire waterfront. The southeastern road (Dike Rd E) is seasonally closed for the winter.
UTILITY CORRIDOR An existing PSE (Puget Sound Energy) utility corridor and easement run east / west through the upper half of the site. The utility infrastructure includes wooden poles and overhead power lines. Pierce County has purchased 55 acres of Hille Lake.
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BULKHEAD Stacked, precast concrete blocks slope along the water’s edge to stabilize the west shoreline and provide the bulkhead. The condition of the bulkhead has been evaluated and concluded to be in poor condition. It is deteriorating and the existing soils have settled over time. The condition of the bulkhead and the lack of a bulkhead on the southern and eastern shorelines result in the erosion of the peninsula and the potential loss of recreational space.
RIP-RAP Over 100 years ago, 15 dikes were built to create Lake Tapps as a hydroelectric project. Six earthen dikes are located within the park and are managed by Cascade Water Alliance.
ROUGH EDGE Portions of the parks shoreline are unarmored gravel or dirt. The heavy recreational use by visitors and boating activities continues to deteriorate the more natural edge condition. This results in pressure on the shoreline while forested areas are under used.
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WETLANDS Existing wetland conditions vary within the park from open water (Hille Lake, lake inlets) to forested wetlands (drainage ravines). The drainage ravines flow to the north and offer on-site stormwater management opportunities and lake drainage. Seasonal lake flow into the drainage ravines from the dikes create challenges for the development of active uses.
HILLE LAKE Hille Lake is a small water body in the northwest corner of the North Lake Tapps Park property. It is an open water wetland connected by a stream at the base of the ravine. Aquatic and forested vegetation surround the lake, providing significant habitat for wildlife.
THE LAKE The Cascade Water Alliance manages the lake level, which varies seasonally. The water level is “full� and sufficient for recreational use during the summer months, but is lowered in the fall and winter months for maintenance and inspections.
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DESIGN PROCESS
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PROS Plan Update As part of the 2015 PROS Plan Update, Pierce County Parks and the research team launched a process to collect information about the existing infrastructure, demographics, current programs and services, and level of service for its park system. The public outreach process gave county residents and park users the opportunity to provide input about park and recreation needs. Public priorities shape the screening and evaluation of future capital projects. High priority projects must:
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Meet public priorities or niches (e.g. regional trails, family activities, conservation, etc.) Leverage the existing system Be funded within available or potential capital resources Be maintained with existing resources Serve more populous and diverse communities Exhibit greater benefits in relation to costs
PROS Plan Vision and Mission: A meaningful and achievable vision statement and mission were developed and adopted during the Comprehensive Plan Update for the County’s park system that reflects the important community values. The Vision Statement: To be a leader in creating livable communities by providing opportunities for people to: Connect with nature - Maintain and create opportunities for people to experience the beauty of nature in the County’s robust park and trail system. Connect people to the natural environment and help foster a sense of stewardship. Live healthy lifestyles - Facilitate and promote a variety of recreation and volunteer opportunities that are inclusive of a wide range of interests and physical abilities. Enjoy vibrant community spaces - Renovate or create park amenities that are flexible, beautiful, and inclusive. Ensure land acquisition is thoughtful, and continue to engage residents and review social and demographic trends that may affect the evolution of spaces. Learn about sustainable practices - Integrate sustainable practices, ecological design, and/or green building techniques into new construction and renovation of existing facilities.
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ONLINE OPEN HOUSE North Lake Tapps Park is a regional park that provides waterfront access and boating facilities that attract visitors from throughout the entire region. Many respondents provided a rich array of comments in response to priorities, vision for the future, desired recreation programs, strategies to create a sustainable parks system, and priorities to complete the trails system.
P I E R C E C O U N T Y PA R K AMENITIES USED MOST RANKED BY OPEN HOUSE PARTICIPANTS
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1
TRAILS
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W AT E R A C C E S S
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P L AY
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OPEN LAWN
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PICNIC
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AT H L E T I C F I E L D S
FREQUENCY OF N O R T H L A K E TA P P S PA R K V I S I T S RANKED BY OPEN HOUSE PARTICIPANTS
4.2%
DAILY
12.6% WEEKLY 15.1% MONTHLY
28.6% SEMI-ANNUALLY 39.5% ANNUALLY
PRIORITY IMPROVEMENT PROJECTS AT N O R T H L A K E TA P P S PA R K RANKED BY OPEN HOUSE PARTICIPANTS
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W AT E R F R O N T A C C E S S & C I R C U L AT I O N
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S O U T H E R N W AT E R FRONT ACCESS
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PA R K I N G L O T E X PA N S I O N
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A D D I T I O N A L W AT E R F R O N T A C C E S S
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R I PA R I A N T R A I L S
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BULKHEAD REPLACEMENT
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EARLY CONCEPT A concept diagram was used to discuss the different potential uses of the site, their relationship to each other, and to any existing uses to remain. Potential uses included large parking area(s), formal and informal open space, play areas, trailheads and trail connectivity, as well as consideration of restroom and park shelter facilities.
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E X PA N D & D I V E R S I F Y ACTIVITIES THROUGHOUT T H E PA R K
PROJECT GOALS
Providing accessible and diverse activities throughout the park such as walking trails, spray/play areas, and beach volleyball, create a variety of family gathering and recreational opportunities to enjoy the waterfront and forested areas.
The master plan helps determine where park activities can be expanded, what type of park activities can be accommodated, and where improvements can be made. Considering the PROS Plan overall vision for regional parks, Pierce County Parks created a set of goals that are specific to the long-term vision for the character, use, and function of North Lake Tapps Park.
E X PA N D A C C E S S TO THE SHORELINE Among the greatest assets at North Lake Tapps Park is shoreline access and the views of Mt. Rainier. Water access, both visual and physical, was identified as a high priority throughout the public involvement process. The goal to expand access to the waterfront will add capacity.
I M P R O V E PA R K I N G A N D C I R C U L AT I O N Parking is currently limited at North Lake Tapps Park, creating numerous conflicts on nearby roads and neighborhoods. Additional parking will be incorporated to accommodate a larger number of park users, create accessible connections, and improve pedestrian and vehicular circulation.
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FINAL MASTER PLAN
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FINAL MASTER PLAN North Lake Tapps is a well-loved park with popular water access for boating and waterfront activities – the previous surveys showed many respondents interested in greater water access. The final master plan incorporates design strategies that respond to the challenges, strengths, and opportunities of the site. Challenges: Overcrowding Underutilized space Parking and circulation issues Strengths: Viewpoints Waterfront Access Healthy forest Growing community Interest in boating and swimming Nature walking trails Ability to diversify uses Opportunities: Increased parking Improved and additional water access Playground additions Shorelines and forest walking trails Bulkhead replacement Circulation and flow
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LEGEND
request public works to install a traffic light and center turn lane to make turning into the park safer
HILLE LAKE
proposed trees open lawn
12TH ST E
proposed planting proposed shelter proposed restroom
proposed parking: 213 spaces (5 ADA)
proposed covered structure existing structure
198TH AVE E
proposed parking 209 spaces (0 ADA)
proposed parking: 32 spaces (8 ADA)
proposed 2-way vehicular access
overhead power line
proposed play area
relocated gate house
utility easement
connect to existing community trail
KE
DI
new parking striping: maintains 52 spaces
proposed picnic tables
RD
forested area proposed trails
wetland buffer proposed waterfront promenade
large drop off area and turn-around
existing boat ramp park boundary existing trees to remain proposed parking: 34 spaces (10 ADA) proposed parking: 24 spaces (10 ADA) proposed play area small drop-off area
LAKE TAPPS
proposed parking: 25 spaces (6 ADA) proposed sand volleyball
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PHASING & PROPOSED IMPROVEMENTS
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W AT E R F R O N T A C C E S S & C I R C U L AT I O N The central parking area includes 213 new parking stalls near the entrance to the park. A new entry drive generally along the easement will connect the relocated gatehouse to the parking, and then continue through the site to connect the parking and new entry area to the existing boat launch and parking. The number of boat launch parking stalls will remain the same but be re-striped. Expanded paving areas near the boat launch can accommodate tie-down/wash-off areas and queuing for the boat launch during peak use. This new entry and access configuration will allow the existing access road along the central waterfront of the park to be removed and replaced with a new waterfront promenade at the heart of North Lake Tapps Park. The new promenade will still allow maintenance vehicle access to support park and lake management. In addition to the promenade, a new play area with a plaza and restroom will expand the uses in the park and provide a year-round activity.
Waterfront access is improved and expanded by turning existing parking into a sandy beach waterfront interface. Volleyball and other activities will be programmed in this location.
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PA R K I N G L O T E X PA N S I O N An expanded parking lot stepping down the hillside provides an additional 209 spaces to the existing 192 spaces to accommodate future need.
Creating the upper parking lot allows for more room for pedestrians at the waterfront. The parking lot expansion is designed to keep the same number of available spots open to vehicles at Lake Tapps.
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S O U T H E R N W AT E R F R O N T A C C E S S A new play area with spray features, and picnic areas, restrooms, and renovated open lawn areas expand the use of the site and help distribute visitors along the waterfront to alleviate the often crowded conditions at the site today. A drop-off area near the playground / plaza area and reconfigured parking improve the vehicle circulation near the new trailhead.
The addition of a playground seeks to spread out activity along the shoreline. Encouraging active play, young children have the opportunity to be loud and lively without disturbing those who wish to have a quiet experience.
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R I PA R I A N T R A I L S A new network of trails will create walking loops throughout the site, connect the different activities, and support education opportunities for the wetlands, ponds, forests and unique lake environments.
The addition of riparian trails serve as amenities to tourists and locals alike, by providing an additional program to the park. Trails would be designed to accommodate the surrounding neighborhoods, be ADA accessible, and be easy to maintain.
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A D D I T I O N A L W AT E R F R O N T A C C E S S & PROPOSED SAND VOLLEYBALL The southernmost waterfront access point is fully renovated to include lawn / open space, accessible shorefront, sand volleyball courts, and a paved pedestrian path.
By designing additional waterfront access and dispersing crowds, a more spacious beach experience is created. The easy trail access encourages further exploration of the park.
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BULKHEAD REPLACEMENT The existing bulkhead is deteriorating, causing the loss of available lawn space. Additionally, a portion of the peninsula does not have a bulkhead, resulting in rapidly eroding usable lawn space. An engineered bulkhead replacement would preserve the existing peninsula.
Replacing the bulkhead is crucial to maintaining the popular beach peninsula. Early investment is needed to keep it as a main attraction.
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APPENDIX A: BULKHEAD EVALUATION
PIERCE COUNTY PARKS LAKE TAPPS COUNTY PARK BULKHEAD LAKE TAPPS COUNTY PARK BULKHEAD EVALUATION AND REPAIR/REPLACEMENT OPTIONS MAY 09, 2016 | Draft Report
LAKE TAPPS PARK BULKHEAD EVALUATION AND REPAIR/REPLACEMENT OPTIONS May 09/ 2016 Prepared for: HBB Landscape Architecture
Prepared by: Nick Fett, PE, SE KPFF Consulting Engineers 1601 Fifth Avenue, Suite 1600 Seattle, WA 98101 (206) 622-5822
LAKE TAPPS PARK BULKHEAD EVALUATION & REPAIR/REPLACEMENT OPTIONS
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KPFF Consulting Engineers
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Table of Contents 1. PROJECT DESCRIPTION a. PROJECT OVERVIEW b. EXISTING CONDITIONS AND DESCRIPTION c.
BULKHEAD EXISTING CONDITIONS
d. BULKHEAD SETTLEMENT 2. BULKHEAD IMPROVEMENT/REPLACEMENT OPTIONS a. BULKHEAD REPAIR/REPLACEMENT b. CAST CONCRETE BULKHEAD CAP c.
REMOVE AND REINSTALL EXISTING CONCETE BLOCKS OVER COMPACTED ROCK SUBBASE
d. REMOVE EXISING CONCRETE BLOCKS ND REPLACE WITH CAST IN PLACE CONCRETE WALL OVER COMPACTED ROCK SUBBASE
/LVW RI )LJXUHV /LVW RI )LJXUHV Figure 1-1 Lake Tapps Park Location Figure 1-2 Bulkhead Location Figure 1-3 Bulkhead Dimensions Figure 1-1: Cast Concrete Bulkhead Cap Figure 1-2: Remove and Reinstall Existing Concrete Blocks over Compacted Rock Subbase Figure 1-3:Remove Existing Concrete Blocks and Replace with Cast-In-Place Concrete Wall over Compacted Rock Subbase
$SSHQGLFHV $SSHQGLFHV Appendix A – Site Photographs
LAKE TAPPS PARK BULKHEAD EVALUATION & REPAIR/REPLACEMENT OPTIONS
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KPFF Consulting Engineers
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1. PROJECT DESCRIPTION PROJECT OVERVIEW EXISTING CONDITIONS AND DESCRIPTION th
The Lake Tapps bulkhead is located at Lake Tapps Park at 198 Avenue East, Bonney Lake, Washington. The bulkhead is at the north end of a north-south peninsula at the north end of the lake. The access is off of th th 9 St E and 198 Ave E. The peninsula is approximately 660 ft long – north –south direction and 100 ft wide in a east-west direction. The existing bulkhead is located on the west side of the peninsula.
Figure 1-1 Lake Tapps Park Location
LAKE TAPPS PARK BULKHEAD EVALUATION & REPAIR/REPLACEMENT OPTIONS
Figure 1-2 Bulkhead Location
Figure 1-3 Bulkhead Dimensions
LAKE TAPPS PARK BULKHEAD EVALUATION & REPAIR/REPLACEMENT OPTIONS
BULKHEAD EXISTING CONDITIONS
The following conditions were noted on May 04, 2016. Lake levels are lowered at certain times of the year for maintenance. The bulkhead is at the west side of a peninsula extending south from a paved parking and drive access area. North of the bulkhead, the paved area extends down to the lake with a shallow sloped gravel and concrete paved surface at a boat launch. There are three floating docks at the paved slope and two floating docks at the bulkhead. There is a single story recreation building at the north end of the peninsula. The peninsula is covered with grass with a few trees, picnic tables and small concrete pads. From the north end of the peninsula on the west side the bulkhead begins adjacent to the south end of the boat launch. The bulkhead extends for approximately 10 ft out from the paved area, then continues approximately 60 ft to the north side of the north floating dock. This section consists of stacked, precast concrete blocks, each approximately 4’ – 10” x 4’ – 4” x 15” thick, laid flat, running bond-staggered, 3 blocks high. The blocks at the north end adjacent to the paved area and at the south end adjacent to the floating dock are approximately flat. The blocks between these ends slope toward the lake, with the maximum slope midway between the north and south ends approximately 6” drop across the 4’ – 10” width. Water depth is approximately 2 ft deep at the north end extending to 2’ – 6” deep in the center, then to 1’ – 6” at the floating dock. The blocks appear to be recycled blocks from another use. The blocks are uniform in size. Block do have some cracks, spalls at edge and moss at cracks. One block was marked “6-19-74”. Some joints between clocks have been grouted or drypacked. There are 3 blocks wide at the north short leg, missing blocks at the corner and 13 blocks to the dock. Blocks also have cast in blockouts, 2 per side, all 4 sides. The length of wall from the north end of the north floating dock to the south end of the south floating dock is 40 ft. Each dock is 10 ft wide with a 20 ft section between docks. Water depth is 1’ – 4” at face of wall. The bulkhead at this location is an 8 ½” thick cast in place wall. The wall includes horizontal sleeves above water level and 3 vertical sleeves in the top; apparently for rails that was not installed. Concrete paving extends out from the recreation building to these docks. The cast in place wall is in good condition, with no major cracks or spalls. The wall is relatively straight and level. The bulkhead from the south face of the south floating dock to the south end of the peninsula is approximately 534 ft. The wall is straight in plan. There are 103 clocks in length, with a section of 2 blocks at the end with misplaced and shifted blocks. The blocks in this section are approximately uniform in size, each 4’ – 8” wide (perpendicular to face of wall) x 5’ – 3” long (parallel with face of wall) x 8” thick to 12” thick. The top of these blocks slope significantly toward the water, with a drop at the face of wall/block of approximately 6” to 1 ft across the 4’ – 8” wide. The edge of some blocks are at the water surface. Water depth is greatest in center of the section, where slope of blocks is greatest. Water depth slopes gradually out into the lake. Condition of blocks varies with some cracks, spalled concrete and rusted rebar. The shore continues as a gravel/dirt edge around the southern end and along the east side of the peninsula.
BULKHEAD SETTLEMENT
As noted above, the top of the bulkhead precast blocks slopes toward the water. This has occurred over time with increasing settlement. The existing soils below the blocks are not providing adequate support for the
blocks to prevent settlement. Either the blocks were originally placed over uncompacted soils that have settled, and/or existing soils are being washed out from below the blocks by wave action and yearly lowering of the lake.
2. BULKHEAD IMPROVEMENT/REPLACEMENT OPTIONS BULKHE AD REPAIR/REPL ACEMENT The existing condition of the bulkhead at the precast concrete blocks is in poor condition. The top of the blocks slope significantly toward the water, restricting the effective recreational use of the bulkhead. Some options are available to improve the function of the bulkhead. The following options are for the bulkhead wall sections at the north 70 ft of the bulkhead from the boat launch area to the floating docks, and from the south 534 ft from the edge of the floating docks to the south end of the existing bulkhead. This results in a total length of improvements of approximately 604 ft.
LAKE TAPPS PARK BULKHEAD EVALUATION & REPAIR/REPLACEMENT OPTIONS
CAST CONCRETE BULKHEAD CAP This option includes the addition of a cast-in-place, reinforced concrete cap on top of the existing precast concrete blocks. No replacement or improvement of the existing supporting soils would be included. The purpose of this options would be to create a level surface of the bulkhead with minimal construction work or cost. Because there is no improvements to the existing supporting soil, continued settlement of the bulkhead would be expected with resultant sloping of the top of bulkhead, cracking of the concrete, and need for further repair/replacement in the future. Estimated construction cost for this option is $54,000.
Figure 2-1: Cast Concrete Bulkhead Cap
REMOVE AND REINSTALL EXISTING CONCRETE BLOCKS OVER COMPACTED ROCK SUBBASE This option includes the temporary removal of the existing precast concrete blocks, excavation of the existing soils and replacement with compacted rock and reinstallation of the existing concrete blocks. After block reinstallation, the surface would be repaired by filling larger cracks, spalls and gaps with grout. The purpose of this option would be to create a level surface of the bulkhead with minimal construction work or cost by reusing the existing blocks. Estimated construction cost for this option is $105,000.
Figure 2-2: Remove and Reinstall Existing Concrete Blocks over Compacted Rock Subbase
LAKE TAPPS PARK BULKHEAD EVALUATION & REPAIR/REPLACEMENT OPTIONS
REMOVE EXISTING CONCRETE BLOCKS AND REPLACE WITH CAST IN PLACE CONCRETE WALL OVER COMPACTED ROCK SUBBASE This option includes the removal of the existing precast concrete blocks, excavation of the existing soils and replacement with a cast in place concrete wall. The purpose of this option would be to create a long term solution with a wall with minimal maintenance requirements similar to the exiting wall at the floating docks. Estimated construction cost for this option is $135,000.
Figure 2-3:Remove Existing Concrete Blocks and Replace with Cast-In-Place Concrete Wall over Compacted Rock Subbase
Appendix A Site Photographs
LAKE TAPPS PARK BULKHEAD EVALUATION & REPAIR/REPLACEMENT OPTIONS
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APPENDIX B: WETLAND DELINEATION MEMO
719 2ND AVENUE, SUITE 200 | SEATTLE, WA 98104 | P 206.394.3700
TECHNICAL MEMORANDUM DATE:
May 25, 2016
TO:
Benn Burke
FROM:
Jeffrey Meyer
SUBJECT:
Lake Tapps Park - Wetland Delineation
PROJECT NUMBER: 553-4098-001 PROJECT NAME:
Lake Tapps Park
INTRODUCTION Pierce County Parks and Recreation (Parks) is proposing to expand and improve park facilities north of Lake Tapps Park. Parametrix conducted a reconnaissance for wetlands at several locations along and near the south shore of Lake Tapps on December 4, 2015. A number of wetlands were located on Parks property at that time. To identify additional opportunities and constraints for newly acquired park lands along 8th Avenue E, a wetland delineation of one area was conducted by Parametrix. The study area is located in northern Pierce County approximately ¼ mile north of Lake Tapps. It is bounded by 12 Street E on the north, 198th Avenue E on the east, and undeveloped forest on the west and south.
METHODS A wetland delineation was performed by Jeff Meyer, PWS, on May 6, 2016 using methods specified in the Corps of Engineers Wetlands Delineation Manual (Environmental Laboratory 1987) and in the Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region (Corps 2010). One wetland, designated as Wetland C, was identified and delineated in the study area. Representative data forms and wetland rating forms are provided in Attachments A and B, respectively. Wetland C was classified according to the USFWS Classification of Wetlands and Deepwater Habitats of the United States (Cowardin et al. 1979). The Washington State Wetlands Rating System for Western Washington – Revised (Hruby 2004) was used to rate wetlands in accordance with Pierce County Code (Chapter 18E.30; Pierce County 2015).
RESULTS Wetland C is palustrine forested wetland estimated at 1 acre. It is a narrow rectangular-shaped wetland sloping gently southeast from 9th Street E to 198th Avenue E (Figure 1). The overstory is dominated by black cottonwood (Populus balsamifera) with small stands of Oregon ash (Fraxinus latifolia) and red alder (Alnus rubra). The shrub layer is primarily twinberry (Lonicera involucrata) and salmonberry (Rubus spectabilis). Mannagrass (Glyceria sp.) and lady’s fern (Athyrium filix-femina) dominate the herbaceous layer. Wetland soils consist of a very dark brown (10YR 2/2) loam surface layer 10 inches deep. Below this layer is a very dark grayish-brown (10YR 3/2) silt loam with dark yellowish-brown (10YR 4/6) prominent redoximorphic features.
TECHNICAL MEMORANDUM (CONTINUED) Flowing water was observed in and discharging from the wetland on December 15, 2015. However, on May 6, 2016, no surface water or groundwater was observed within the upper 15 inches. Primary wetland hydrology indicators were observed, including water marks, sediment deposits, and algal mats. The boundary between Wetland C and the adjacent uplands is mostly abrupt with a distinct topographic break on the west and east sides. To the north is a subtle low ridge with mostly upland vegetation that appears to separate Wetland C from another previously delineated (by others) wetland component just south of 9th Street E. The two wetland components may be connected by groundwater. This upland and the wetland near 9th Street E were not delineated in detail for this project. For the purposes of this project, these wetland components, in combination, comprise the wetland complex referred to as Wetland C. The adjacent upland forest is also dominated by black cottonwood but big leaf maple (Acer macrophyllum) and Douglas fir (Pseudotsuga menziesii) also are common. Vine maple (Acer circinatum), Indian plum (Oemleria cerasiformis), and salmonberry are dominant in the shrub understory. Sword fern (Polystichum munitum) is characteristic of the upland herbaceous layer. Upland soils consisted of 8 inches of very dark brown (10YR 2/2) loam in the surface layer over dark brown (10YR 3/3) or dark yellowish-brown (10YR 3/4) silt loam to a depth of 14 or more inches. Uplands were dry. Wetland C would be classified as a palustrine forested wetland. Wetland C would be rated as a Category III wetland with 17 habitat points. A Category III wetland in Pierce County would receive a standard 50-foot buffer (Pierce County Code 18E.30.060).
Pierce County Parks Department Lake Tapps Park - Wetland Delineation
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553-4098-001 May 25, 2016
TECHNICAL MEMORANDUM (CONTINUED)
REFERENCES Corps (U.S. Army Corps of Engineers). 2010. Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region (Version 2.0), eds. J.S. Wakeley, R.W. Lichvar, and C.V. Noble. ERDC/EL TR-10-3. U.S. Army Engineer Research and Development Center, Vicksburg, Mississippi. Cowardin, L.M., V. Carter, F.C. Golet, and E.T. LaRoe. 1979. Classification of Wetlands and Deepwater Habitats of the United States. FWS/OBS-70/31, U.S. Fish and Wildlife Service, Washington, D.C. Environmental Laboratory. 1987. Corps of Engineers Wetlands Delineation Manual. Technical Report Y-87-1 (online edition), Environmental Laboratory, Department of the Army, Waterways Experiment Station, Vicksburg, Mississippi. Hruby, T. 2004. Washington State Wetlands Rating System for Western Washington – Revised. Washington State Department of Ecology Publication #04-06-025. Olympia, Washington. Pierce County. 2015. Title 18E: Development Regulations—Critical Areas. Lakewood, Washington.
Pierce County Parks Department Lake Tapps Park - Wetland Delineation
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553-4098-001 May 25, 2016
Attachment A Data Forms
Attachment B Rating Form
Figures
APPENDIX C: COST ESTIMATE
Estimate of Probable Cost of Construction Hough Beck & Baird Inc. Date: Project Name: Project Number: Project Phase: Prepared By: Checked By:
08/01/16
Lake Tapps Park 2015-14 200 M. Thompson J. Vong
Project List Total Const. A. B. C. D. E. F.
Project 1 Waterfront Access and Circulation
$
8,371,474
Project 2 Parking Lot Expansion
$
1,390,000
Project 3 Southern Waterfront Access
$
1,515,000
Project 4 Riparian Trails
$
835,000
Project 5 Additional Waterfront Access
$
185,000
Project 6 Bulkhead Replacement
$
1,000,000
$ $ $ $ $ $
$ 13,296,474
$
Estimated Total Cost for ALL Projects Estimated Total Project Cost
Design Fees (20%) 1,674,294.71 278,000.00 303,000.00 167,000.00 37,000.00 200,000.00 2,659,295
Admin Fees (5%) $ 418,573.68 $ 69,500.00 $ 75,750.00 $ 41,750.00 $ 9,250.00 $ 50,000.00 $
664,824
$16,620,592
Assumptions: 1. Cost estimate is based on Final Master Plan. 2. Costs are in 2016 dollars, and escallation is not included. 3. Landscape areas include areas with shrubs and groundcover and areas with lawn. 4. 65/10 dispersion for drive lanes and parking areas along drive lanes. 5. 50% 2year to 50 year detention and dispersion to native vegetation for parking lots 6. Dispersion to native vegetation meets water quality requirements. 7. Site earthwork is balanced for roadway and parking improvements. 8. Water service for restroom improvements will be from water line in existing driveway. 9. Probably costs of construction are prepared from masterplan drawings dated July 25th, 2016. 10. Sewer service for restroom improvements will require a septic tank and drain field. Assumptions for potable water distribution system: 1. The system will service the caretaker's house, existing and new restrooms, picnic shelters, and boat washdown. 2. The system will be served from the 12" main at 198th and 13th. 3. There is sufficient water availability and pressure to serve anticipated water demands. 4. Periodic flushing will be required as part of the system maintenance. (The system "dead ends" a significant distance from the connection to the main.) 5. Water service cost does not reflect fees for permitting, meter installation, or connection fees from Bonney Lake Water District.
Estimate of Probable Cost of Construction Hough Beck & Baird Inc. Date: Project Name: Project Number: Project Phase: Prepared By: Checked By:
8/1/2016
Lake Tapps Park 2015-14 200 M. Thompson J. Vong $8,371,474
Project Total:
Project 1 Waterfront Access and Circulation Item Description 1.00 1.01 1.02 1.03 1.04 2.00 2.01 2.02 2.03 2.04 2.05 2.06 2.07 3.00 3.01 3.02 3.03 4.00 4.01 4.02 5.00 5.01 5.02 5.03 5.04 5.05 5.06 5.07 5.08 5.09 5.10 6.00 6.01 6.02 6.03 6.04 6.05 6.06 7.00 7.01 7.02 7.03 7.04 7.05
Demolition Clear and Grub (4" depth) Sawcut/Remove Asphalt Pavement TESC Construction Fencing Earthwork Balance Cut/Fill On Site (6" avg. depth, entire area) Rough Grading (entire area) Finish Grading (entire area) Excavation-concrete plaza areas (+4") Excavation-play area (+18") Excavation-walkways (+4") Rip-Rap Cut/Fill Pavement Asphalt Walkways Asphalt Roads and parking areas Plaza/Special Pavement Site Lighting Pedestrian lighting Parking Lot Lighting Site Improvements Play area (play equipment, signage, surfacing, drainage) Concrete Beach Steps Trash/Recycle Receptacles Restrooms Shelter (large) Picnic Tables (6' sq.) Benches Signage (monument) Signage (interpretive) Signage (wayfinding) Planting/Irrigation Planting Soil (6" average depth) Automatic Irrigation Shrubs and Groundcover (Average 24" OC) Mulch (2" depth) Seed Lawn Trees Civil Improvements Drainage System (pavements) Stormwater Infiltration System Stormwater level spreader and culvert Septic tank and drain field Water Service
Mobilization (5%) Sales Tax (9.6%) Contingency (20%)
Qty
Unit
Unit Cost
Item Total
10.3 31,650 449,957 12,500
AC SF SF LF
$5,000.00 $2.00 $0.50 $4.00
$ $ $ $
51,500 63,300 224,979 50,000
8,350 10.3 10.3 3,870 420 3,310 50
CY AC AC CY CY CY CY
$25.00 $9,000.00 $4,500.00 $12.00 $12.00 $12.00 $75.00
$ $ $ $ $ $ $
208,750 92,700 46,350 46,440 5,040 39,720 3,750
38,050 SF 230,100 SF 31,350 SF
$3.50 $5.00 $9.00
$ $ $
133,175 1,150,500 282,150
12 EA 65 EA
$5,000.00 $5,000.00
$ $
60,000 325,000
1 1 10 1 3 18 17 1 1 5
EA LS EA LS EA EA EA EA EA EA
$500,000.00 $50,000.00 $1,500.00 $150,000.00 $100,000.00 $5,000.00 $1,000.00 $15,000.00 $5,000.00 $3,000.00
$ $ $ $ $ $ $ $ $ $
500,000 50,000 15,000 150,000 300,000 90,000 17,000 15,000 5,000 15,000
2,330 125,840 83,379 515 42,460 60
CY SF EA CY SF EA
$40.00 $1.20 $15.00 $46.00 $4.00 $350.00
$ $ $ $ $ $
93,200 151,008 1,250,685 23,690 169,840 21,000
90,500 41,250 1 1 3300
SF CF LS LS LF
$1.00 $6.00 $10,000.00 $65,000.00 $27.00
$ $ $ $ $
90,500 247,500 10,000 65,000 89,100
Subtotal (1) $
6,151,877
$
307,594
Subtotal (2) $
$ $
6,459,470 620,109 1,291,894.07
Project 1 Base Bid Total $
8,371,474
Estimate of Probable Cost of Construction Hough Beck & Baird Inc. Date: Project Name: Project Number: Project Phase: Prepared By: Checked By:
8/1/2016
Lake Tapps Park 2015-14 200 M. Thompson J. Vong $6,701,940
Future Projects Total:
Future Projects Phase Total Project 2 Parking Lot Expansion Grading (12" balance cut/fill, rough grading, finish grading) Pavement (asphalt roads, parking, walkways) Irrigated landscape areas (parking islands) Site improvements (parking lights) Project 3 Southern Waterfront Access Grading (6" balance cut/fill, rough grading, finish grading) Pavement (asphalt roads, parking, walkways; plaza) Irrigated landscape areas (lawn, parking islands) Playground Site improvements (shelters, restroom picnic tables, etc.) Project 4 Riparian Trails Grading (12" balance cut/fill, rough grading, finish grading) Pavement (asphalt walkways) Landscape areas (trailside restoration) Site improvements (shelter, signs) Project 5 Additional Waterfront Access Grading (6" balance cut/fill, rough grading, finish grading) Pavement (asphalt walkways) Irrigated landscape areas (lawn) Site improvements (picnic tables) Project 6 Bulkhead Replacement
Mobilization (5%)
Sales Tax (9.6%) Contingency (20%)
$
1,390,000
$
1,515,000
$
835,000
$
185,000
$
1,000,000
Subtotal (1) $
4,925,000
$
246,250
Subtotal (2) $
$ $
5,171,250 496,440 1,034,250.00
Future Projects Base Bid Total $
6,701,940