2016 ASDSO West Regional Conference

A Century of Dam Engineering Solutions

Tempe Town Lake Dam City of Tempe, Arizona

When completed, the Tempe Town Lake Dam will be one of the world’s largest hydraulically-operated crest gate dams.

Visit us at Booth #403 at the ASDSO West Regional Conference.

Dean B. Durkee, PhD, PE • ddurkee@gfnet.com Paul G. Schweiger, PE, CFM • pschweiger@gfnet.com Offices Worldwide • www.gannettfleming.com • 800.233.1055

Welcome to Sacramento The West Region of ASDSO welcomes you to the 2016 West Regional Conference - Engineering for Extremes Part 1: Seismic Design for Dams in the Western U.S. ASDSO is a national organization of over 3,000 members dedicated to the furtherance of dam safety through research, education, and communication. Special thanks go to the following volunteers for their generous support and hard work as conference organizers.

• • •

Charles F. Cobb, P.E., Alaska Department of Natural Resources Keith Mills, P.E., G.E., Oregon Water Resources Department Erik Malvick, Pd.D., P.E. California Department of Water Resources

Thanks also go to all of the conference sponsors and exhibitors for their support and participation. See our sponsor list on page 4 and the exhibitor list on pages 21-27.

ASDSO conducts conferences, technical seminars and other educational meetings throughout the year. Additionally, ASDSO publishes a quarterly technical Journal, monthly E-News and other research documents, and maintains a clearinghouse of information on dam safety. To find out more about ASDSO, please contact us: Association of State Dam Safety Officials 239 South Limestone Street Lexington, KY 40508 Phone: 859/550-2788 Email: info@damsafety.org Website: www.damsafety.org

SAVE THE DATE September 11-15 for Dam Safety 2016 Philadelphia, PA Join over 900 dam and levee safety professionals for • 30+ Sessions • 100+ Presentations • 100+ Exhibitors and Sponsors 1 Event - Dam Safety 2016 Make your plans now to attend!

Registration opens in May 2016 For more information visit DamSafety.org

Thank you Sponsors

ASDSO West Regional Conference 2016 4

Table of Contents Conference Sponsors ............................................................................................................................................................ 4 Schedule at a Glance ............................................................................................................................................................ 6 Sacramento Convention Center Meeting Space ............................................................................................................... 7 Agenda ................................................................................................................................................................................... 9 Student Poster Displays ...................................................................................................................................................... 18 Exhibit Hall Map ................................................................................................................................................................. 20 Exhibitor Information ........................................................................................................................................................ 21 Conference Evaluation Form ............................................................................................................................................ 29 PDH Form ........................................................................................................................................................................... 31

GENTERRA

Consultants, Inc.

Specialists in Dam & Levee Safety

Civil Engineering and Geotechnical Services Dams, Levees, Flood Control Facilities and Civil Works • Design of water storage and flood control facilities • Design and evaluation of dams and levees • Dam safety risk analysis

• Dam and levee safety inspection and rehabilitation • Dam failure inundation studies • Review agency coordination

Contact Joseph J. Kulikowski, P.E., G.E. at 949-753-8766 or joekul@genterra.com Corporate Headquarters: 15375 Barranca Parkway, Bldg. L, Irvine, CA 92618 Branch Office Locations: Sacramento, CA • San Diego, CA • Harrisburg, PA Projects Located Nationwide • Visit our website at www.genterra.com

Schedule at a Glance All sessions will be held in Room 202 - 203 on the Second Floor of the Sacramento Convention Center. The exhibit show will be held in Hall E on the First Floor, just inside the Center’s main entrance.

WEDNESDAY MARCH 9

EVENT

LOCATION

12:00 pm – 8:00 pm

Speaker Preview Room Open

Room 201

12:00 pm – 5:30 pm

Registration Open

West Lobby

12:00 pm – 5:30 pm

Exhibit Setup

Exhibit Hall E

3:00 pm – 5:00 pm

West Regional Caucus Meeting

Room 103

5:00 pm – 5:30 pm

Moderators Training Session

Room 202 - 203

5:30 pm – 6:30 pm

Welcome Reception

Exhibit Hall E

THURSDAY MARCH 10

EVENT

LOCATION

7:30 am – 8:00 pm

Speaker Preview Room Open

Room 201

7:30 am – 5:00 pm

Registration Open

West Lobby

7:30 am – 8:30 am

Continental Breakfast with the Exhibitors

Exhibit Hall E

7:45 am – 8:15 am

Speakers & Moderators Meeting

Room 202 - 203

8:30 am – 10:00 am

Opening Session: Engineering for Extremes – Three Perspectives on the Standard of Care for Dam Safety

Room 202 - 203

10:30 am – 12:00 pm

Session Two: What We Know and What We Don’t Know About Earthquake Engineering for Dams

Room 202 - 203

12:00 pm – 1:30 pm

Lunch On Own

1:30 pm – 3:00 pm

Session Three: Rockin’ and Rollin’ – Ground Motions and Seismic Loads

Room 202 - 203

3:30 pm – 5:00 pm

Session Four: Are You Ready to Rumble?

Earthquake Modeling

Room 202 - 203

5:00 pm – 6:00 pm

Reception with the Exhibitors

Exhibit Hall E

FRIDAY MARCH 11

EVENT

LOCATION

7:30 am – 5:00 pm

Registration Open

West Lobby

7:00 am – 4:00 pm

Speaker Preview Room Open

Room 201

7:30 am – 8:30 am

Continental Breakfast with the Exhibitors

Exhibit Hall E

7:45 am – 8:15 am

Speakers & Moderators Meeting

Room 202 - 203

8:30 am – 10:00 am

Session Five: Concrete vs. Earthquakes – Case Histories of Concrete Dam Designs

Room 202 - 203

10:30 am – 12:00 pm

Session Six: Go Pound Some Sand – Seismic Site Characterization

Room 202 - 203

12:00 pm – 1:30 pm

Lunch On Own

1:30 pm – 3:00 pm

Session Seven: Earth vs. Earthquakes – Case Histories of Embankment Dam Designs

Room 202 - 203

3:30 pm – 5:30 pm

Session Eight: The Next Big Earthquake Debate: Seismic Hazard Assessments

Room 202 -203

3:30 pm – 5:00 pm

Exhibit Dismantle

Exhibit Hall E

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Convention Center Meeting Space All conference activities will take place in the Sacramento Convention Center.

Key conference locations: Registration - West Lobby Sessions - Room 202 - 203 Exhibit Hall - Exhibit Hall E Speaker Preview Room - Room 201

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ASDSO TRAINING 2016 Looking for more educational options? If so, ASDSO has the resource for you - DamSafety.org.

At DamSafety.org you can find everything from live webinars and upcoming classroom seminars to over 50 webinars on-demand, classroom seminar materials, conference proceedings, and more. Log on now to DamSafety.org and find the perfect training for you, your team, or your class!

Save the date for these 2016 training opportunities: March: 29-31: Classroom Seminar - Fundamentals of Reinforced Concrete Design of Hydraulic Structures, Baltimore, MD April: 12: Webinar - Spillway Conduits - More Than Just a Pipe Through the Dam 26-28: Classroom Seminar - Seepage Through Earthen Dams, Atlanta, GA May: 10: Webinar - Strength Selection for Static Slope Stability Analysis 25-27: Classroom Seminar - Inspection and Assessments of Dams, Omaha, NE June: 14: Webinar - Cracking and Hydraulic Fracturing in Embankment Dams and Levees 28-30: Classroom Seminar - Stability Analysis of Embankment Dams, Austin, TX July: 12: Webinar - Three-Dimensional Influences on Seepage Safety and Development of Seepage Failure Modes August: 9: Webinar - The Application of Geophysics in the Design, Construction and Operation of Dams September: 11-15: Dam Safety 2016 National Conference, Philadelphia, PA October: 11-13: Classroom Seminar - Inspection and Assessments of Dams, White Plains, NY 11: Webinar - Hydrologic Hazards – Estimating Probabilities of Extreme Floods November: 8: Webinar - Intro to Tailings Dam and Coal Ash Impoundment Design, Construction and Monitoring – What Can Go Wrong December: 13: Webinar - Intro to Dam Decommissioning

DamSafety.org

Agenda WEDNESDAY, MARCH 9

5:30 pm – 6:30 pm Welcome Reception Exhibit Hall E

12:00 pm – 8:00 pm Speaker Preview Room Open Room 201

THURSDAY, MARCH 10

12:00 pm – 5:30 pm Registration Open West Lobby

7:30 am – 8:00 pm Speaker Preview Room Open Room 201

12:00 pm – 5:30 pm Exhibit Setup Exhibit Hall E

7:30 am – 5:00 pm Registration Open West Lobby

3:00 pm – 5:00 pm West Regional Caucus Meeting Room 103

7:30 am – 6:00 pm Exhibits Open Exhibit Hall E

5:00 pm – 5:30 pm Moderators Training Session Room 202 - 203

7:30 am – 8:00 am Continental Breakfast Exhibit Hall E

7:45 am – 8:15 am Thursday Speakers & Moderators Meeting Room 202-203 8:30 am – 10:00 am Opening Session: Engineering for Extremes – Three Perspectives on the Standard of Care for Dam Safety Room 202-203 Moderated by Charles F. Cobb, P.E., Alaska Department of Natural Resources Welcome Remarks Sharon K. Tapia, P.E., Design Branch Chief, California Department of Water Resources Seismic Design of Dams I.M. Idriss, Ph.D., Professor and Consultant, University of California-Davis Legal Liability for Dam Failures Denis Binder, Professor, Dale E. Fowler School of Law, Chapman University Although dams are not designed or intended to fail, the unexpected or extreme can occur with tragic consequences. In the unlikely chance of such a tragedy, the legal system may provide remedies to compensate the victims and their families for their losses. Each state is a separate jurisdiction free to adopt its own legal rules, regulations and theories of relief. They will generally utilize the common law theories of negligence and strict liability in awarding relief. The question with negligence is not if the event is extreme, but if it is reasonably foreseeable. If so, then how would a reasonable person, or expert act with respect to the risk? Potential damages include the traditional common law compensatory damages for loss of life/wrongful death, personal injury, loss of earnings, medical expenses, property damages, and environmental losses. The additional risk of punitive damages exists if defendant’s wrongful conduct is viewed as intentional, egregious, willful, wanton, or reckless.

Standard of Care in a Regulatory Environment Douglas L. Johnson, P.E., Regional Engineer, Federal Energy Regulatory Commission This presentation will discuss the standard of care for dam safety from a regulatory perspective. The author has the background of having been both a state dam safety regulator with the state of Washington, and a Federal regulator with the Federal Energy Regulatory Commission (FERC). In a regulatory environment, the regulator typically establishes minimum standards and guidelines in

order to protect the public living downstream from a dam.

This is not necessarily the same as meeting the industrywide standard of care or the duty an owner may owe to the public living below their dam. For example, several states do not require an Emergency Action Plan (EAP) for high hazard dams. However, the industry standard is to maintain an EAP for all high hazard dams. A dam owner may meet the state standard with no EAP, but is still exposed to liability should the dam fail because he/she is not meeting the standard of practice in the dam industry or their duty to the public The presentation will also include a comparison between selected Federal standards and state standards. The standards are variable, typically based on size of dam and downstream hazard. Most states currently use deterministic standards, but there is no consensus nationally on what those standards should be. Some states provide their standards through guidelines to allow some flexibility, while other states have rigid regulations to impose their standards. Washington was one of the first states to implement risk-based dam safety standards and guidelines. These are significantly different than the deterministic approach, but they are not a true risk analysis for each dam. On the other hand, FERC is currently using a deterministic approach for extreme events, but is transitioning to Risk-Informed Decision Making (RIDM), which would involve detailed risk analyses and risk assessments for each dam. The presentation will contrast the different approaches, and provide some insights and lessons learned regarding standard of care in state and federal dam safety programs.

10:00 am – 10:30 am Refreshment Break Exhibit Hall E 10:30 am – 12:00 pm Session Two: What We Know and Don’t Know About Earthquake Engineering for Dams Room 202-203 Moderated by Vik Iso-Ahola, P.E., MWH Americas, Inc. Research Needs in the Seismic Performance of Dams Richard Armstrong, Ph.D., P.E., Assistant Professor, Department of Civil Engineering, California State University-Sacramento Dams serve an important role in state and national water management and power generation. In seismic regions, many of these dams have been identified to have seismic deficiencies, which has led to costly retrofit programs. Many of the physical mechanisms that affect the performance of these structures, however, are poorly understood. During the seismic evaluation process, the

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addition of these uncertainties makes decision-making on the safety of the structure challenging.

Research into the seismic performance of dams provides improved understanding into the physical mechanisms that affect the performance of these structures. This improved understanding reduces potential uncertainties and leads to improved confidence in the evaluation results.

This, in turn, allows decision-makers to better assess the current safety of dams so that enhancements to the waterresource systems can be more targeted.

Outlined here are keys areas in dam engineering in need of future research that significantly contribute to uncertainties in seismic evaluations and are ripe for future improvements. In addition, outcomes from recent research projects are used as case-histories to highlight the reduction in uncertainties in the overall seismic evaluation process, as well as the benefits of collaboration between universities, dam owners, and regulators.

California’s Seismic Re-Evaluation Program – Screening and Prioritizing Wallace C. Lam, P.E., Supervising Engineer, and Daniel Meyersohn, Ph.D., P.E., Supervising Engineer, Division of Safety of Dams, California Department of Water Resources The Division of Safety of Dams (DSOD) has approximately 1,260 dams under its jurisdiction with the majority of the inventory consisting of embankment-type dams, which include earth, earth-rock, rock, and hydraulic fill dams.

DSOD initiated a seismic review program of existing dams over a decade ago, first targeting dams located in close proximity to the Hayward fault, and then expanding to areas where dams would potentially be impacted by known active faults with high slip-rates. Currently, the program is being expanded to include all remaining dams in California. While many of these jurisdictional dams have previously been evaluated and possibly modified and/or remediated over the years, DSOD believes a re-evaluation is necessary because the state-of-practice in seismic analysis has improved and continues to evolve; but most importantly, the risk of downstream hazard has increased with new development downstream of these dams.

In order to best utilize limited staff resources, DSOD implemented a systematic approach to prioritize candidate dams that are in need of an in-depth seismic analysis. The prioritization process begins with first selecting a broad number of dams using a risk quantifier, referred to as the Total Class Weight (TCW), and a site-specific peak ground acceleration estimated for a 500-year return period.

Higher priority is placed on aged dams and dams that have moderate to extreme seismic risk and downstream hazard.

After this first screening, dams are selected on the bases

of dam type and age, height and storage, materials zoning, and available freeboard. A comprehensive review using information contained in the extensive DSOD dam files is then performed by a team consisting of a design engineer and an engineering geologist. This review focuses on specific vulnerability factors that include dam composition and geometry, internal seepage controls and performance, outlet works operability and condition, prior dam alterations and repairs, and historical dam performance issues based on DSOD maintenance inspections. Dams with the potential for fault rupture hazard are also tagged as high-priority. These dams are reviewed to identify failure modes associated with embankment cracking, and possible piping and internal erosion, if the embankment is not adequately protected with filters and drains. The results of each review are summarized on a vulnerability evaluation form developed by DSOD. The review team collaborates and discusses the adequacy of information on each element of the file review and then collectively completes the technical summaries to present their findings to DSOD technical specialists and managers.

In this presentation, we will briefly illustrate the screening and priority processes used for our high priority dam portfolio, discuss the specific areas of concerns during the file review assessment, and explain the typical follow-up actions in order to complete the seismic re-evaluation process.

Current and Upcoming USACE Guidance in Earthquake Evaluation and Design for Civil Works Projects Scott Shewbridge, Ph.D., P.E., G.E., Senior Geotechnical and Risk Specialist, Risk Management Center, US Army Corps of Engineers The US Army Corps of Engineers (USACE) is moving towards risk-informed decision processes for all aspects of flood risk portfolio management, including seismic analysis and design of dams and levees. This presentation will discuss updates being made to: • ER 1110-2-1806 – Earthquake Design and Evaluation for Civil Works Projects • ECB (EM) 1110-2-6000 - Selection of Design Earthquakes and Associated Ground Motions • ECB (EM) 1110-2-6001 - Seismic Analysis of Embankments • Engineering Manual (EM) 1110-2-1913: Design, Construction and Evaluation of Levees and Appendix / M / (ETL) XXXX-X-2 Seismic Evaluation of Levees The USACE has begun adopting a two-step process for new and remedial design, conducting initial

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assessments and design analyses using traditional design methods and standards, followed by a risk-assessment process to evaluate whether the resulting traditional design’s reliability is commensurate with the potential consequences of poor performance. This approach should help to retain the legacy of experience developed from past assessments, while ensuring that final project reliability and resiliency are sufficient to achieve current and future life safety, economic and other societal goals.

12:00 pm – 1:30 pm Lunch On Own 1:30 pm – 3:00 pm Session Three: Rockin’ and Rollin’ - Ground Motions and Seismic Loads Room 202-203 Moderated by E. George Robison, Ph.D., P.E., McMillen Jacobs Associates Next Generation Earthquake Ground Motion Models Yousef Bozorgnia, Professor of Structural Engineering, University of California-Berkeley ShakeMaps, ShakeCast, and California Dam Safety Robert G. Burns, Engineering Geologist, California Department of Water Resources The U.S. Geological Survey’s (USGS) ShakeCast 3 software enables a rapid and prioritized post-earthquake response from California’s Division of Safety of Dams (DSOD). The post-earthquake response is based on an understanding of the mapped pattern of shaking severity from USGS ShakeMaps. DSOD uses ShakeCast 3 to search for new ShakeMap data every 60 seconds (24/7), to download new data when available, to determine the intensity of shaking at California dam sites within the area of the ShakeMap, and to produce customized email notifications for delivery to DSOD engineers and geologists. DSOD geologists receive near real-time email notifications of all earthquakes in proximity to California that are at least magnitude M5.0. Additionally, when the perceived shaking at a dam exceeds a pre-defined shaking threshold, both DSOD engineers and geologists receive an email with a list of dams ranked according to the severity of shaking, along with a recommended response for those dams within their area of geographic responsibility.

Instrumental Intensity is DSOD’s chosen metric for defining shaking thresholds in ShakeCast because it is based on regression of recorded peak ground accelerations (PGA) and peak ground velocities (PGV), and has been shown by the USGS to be a reliable predictor of damage.

Shaking thresholds for each dam are defined using

engineering judgment coupled with an understanding of how both geologic and structural conditions at a dam site may influence the sensitivity of a dam to earthquake shaking.

The Cascadia Subduction Zone – Implications of LongDuration Ground Motions on Soil Deformations Steven L. Kramer, Professor, University of Washington 3:00 pm – 3:30 pm Refreshment Break Exhibit Hall E 3:30 pm – 5:00 pm Session Four: Are You Ready to Rumble? Earthquake Modeling Room 202-203 Moderated by Stephen W. Verigin, P.E., G.E., GEI Consultants, Inc. Nonlinear Deformation Analyses of an Embankment Dam on a Spatially Variable Liquefiable Deposit Ross W. Boulanger, Ph.D., P.E., Professor, Department of Civil and Environmental Engineering, University of California-Davis Nonlinear deformation analyses of an embankment dam on a spatially variable (stochastic), liquefiable alluvial deposit are presented and compared to results of analyses using uniform properties for the same deposit. The results are used to examine the basis for selecting representative properties, which when used in uniform models, produces embankment deformations consistent with the median response of the stochastic models. Analyses are performed for four different sets of realizations for the stochastic alluvial deposit and a range of ground motions. The results suggest that the use of 33rd percentile properties for representing stochastic deposits in uniform models ranges from reasonable to conservative for cases where the length scale of the deformation mechanism is significantly greater than the scale of fluctuation in the deposit. Implications for site characterization practices are discussed.

The Importance of Documentation in Non-linear Seismic Deformation Analyses Michael H. Beaty, Ph.D., P.E., Principal Engineer, Beaty Engineering LLC The insights afforded by non-linear deformation analyses (NDAs) should, in principle, lead to increased confidence in decisions regarding risk assessments or the economical design of remedial measures. NDAs can provide an

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understanding of potential behaviors that simpler analysis methods cannot, such as the patterns of deformations, progressive failure mechanisms, interactions between embankments and embedded structures, dependence on ground motion characteristics, or the relative effectiveness of remediation options. Increasing the reliability of NDA studies, and the confidence that owners, regulators, and engineers can place in their results, will provide benefits to all involved.

NDAs are inherently complex and do not lend themselves to standardization. Many constitutive models and modeling approaches are used in common practice, each with a unique set of strengths and weaknesses. NDAs often need to address the complicated behaviors of liquefaction or cyclic softening. Deformation estimates may also be sensitive to uncertain input parameters.

Practitioners have varying levels of experience and differing perspectives. These and other complexities place significant demands on both the analyst and the reviewer/ regulator.

This presentation discusses the role of transparent and thorough documentation in improving the reliability of NDA analyses and the confidence that can be placed in individual studies. Key items to be addressed and documented in an advanced NDA are presented through case history examples. The work of improving the usefulness of NDAs through improved documentation begins with the formulation of the analysis scope and continues through the final review.

State of Practice in Seismic Analysis of Concrete Dams and Hydraulic Structures Mark Schultz, S.E., G.E., Supervising Engineer, California Department of Water Resources California’s earthquake risk combines the most active seismic region in the country, in the most populous state, with a large inventory of aging high-hazard concrete dams and hydraulic structures. Recent advancements in nonlinear finite element analysis software have reset the state of practice to a new level for predicting seismic performance. As a leader in the seismic analysis of dams, the California Division of Safety of Dams strategically implemented the latest nonlinear explicit finite element software and adapted it for the unique challenges associated with seismic input, reservoir interaction, soilstructure interaction, and concrete damage accumulation.

LS-DYNA was selected on the merits of technical capability, cost, and scalability. New techniques were developed and calibrated to case history data, close-form solutions and large-scale laboratory test experiments.

This presentation will illustrate the advantages and challenges associated with advanced nonlinear seismic

analysis and serve as a preface to two other presentations.

5:00 pm – 6:00 pm Reception Exhibit Hall E

FRIDAY, MARCH 11 7:00 am – 4:00 pm Speaker Preview Room Open Room 201 7:30 am – 5:00 pm Registration Open West Lobby 7:30 am – 3:30 pm Exhibits Open Exhibit Hall E 7:30 am – 8:30 am Continental Breakfast Exhibit Hall E 7:45 am – 8:15 am Friday Speakers & Moderators Meeting Room 202-203 8:30 am – 10:00 am Session Five: Concrete vs. Earthquakes - Case Histories of Concrete Dam Designs Room 202-203 Moderated by Robert Cannon, P.G., Schnabel Engineering Non-Linear Finite Element Model Validation at Lower Crystal Springs Dam and Pacoima Dam Vojislav Cvijanovic, Water Resources Engineer, California Department of Water Resources As the capabilities of nonlinear finite element analysis tools continue to advance the state of practice, they provide additional insight into the complex threedimensional behavior of concrete dams. Simultaneously, the inclusion of non-linear features introduces room for additional error. Analysis methods must therefore be evaluated using direct measurements of known behavior to gain confidence in model results. This paper focuses on comparing physical recordings of dynamic response to model calculations. The findings presented are intended to demonstrate how finite element analysis methods can capture wave propagation, site response, and structural response. The comparisons demonstrate the capability of current modeling techniques to re-create a known earthquake and simulate dynamic response of a dam subject to seismic loading.

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Bear Creek Dam – Cascadia Effects Gerry Heslin, P.E., Senior Associate Engineer, Cornforth Consultants, Inc. Bear Creek Dam is a concrete gravity structure that impounds domestic water for the City of Astoria, Oregon.

The dam is founded in a narrow canyon on a mixture of hard basalt, weak marine sediments, and breccia. The dam is classified as a high hazard dam due to the proximity of downstream development. Previous stability evaluations concluded the factor of safety (FS) against sliding was less than 1.0 for static conditions at the maximum dam section, but those analyses did not include 3D effects offered by the abutments. The improved understanding of the Cascadia Subduction Zone (CSZ) earthquake hazard prompted regulators to commission a new 3D stability evaluation. The authors developed a geologic model of the structure and foundation based on detailed construction notes in the City Engineer’s records from 1912. Structural analyses determined that the dam would behave as a beam spanning between the abutments provided abutments were capable of resisting structural loading. Limit equilibrium stability analyses were performed at seven representative sections to determine total driving force and available resistance. The results were used to calculate a composite FS for the entire structure. Results confirm that the maximum dam section has a calculated static FS less than 1.0, but a composite FS of at least 1.2 once the influence of the abutments is accounted for. Newmarktype displacement estimates were completed to estimate movements that would result at each abutment during a CSZ Mega-thrust rupture. This work highlights the importance of considering overall dam geometry when evaluating sliding stability.

Dam Site Characterization and Input to Risk-Informed Decision Making for Concrete Dam Safety Evaluations Keith I. Kelson, Engineering Geologist, South Pacific Division, Dam Safety Production Center, US Army Corps of Engineers USACE dam safety risk management includes risk analysis, assessment, and control, all considered in context of Tolerable Risk Guidelines. The process helps identify and understand primary risk contributors, assists in communicating risk, justifies and prioritizes safety-related decisions, and leads to consistent, defensible courses of action. As part of this process, multi-disciplinary risk cadres assess potential hazards, and combine them with system response (fragility) and consequences to analyze risk. Geologic site characterization informs probability estimates and identifies primary risk contributors in foundation characteristics, seismic hazard, and hydrologic loading. This presentation will provide a summary

case history of a recent risk assessment for a concrete gravity dam in which foundation characteristics and seismic hazards yielded many Potential Failure Modes (PFMs). Foundation bedrock conditions warranted consideration of a PFM for abutment stability, which was analyzed in detail but ultimately excluded as a key risk driver. Seismic loading generated by the Cascadia Subduction Zone and local crustal sources was identified as a significant hazard because of anticipated strong ground motions and potentially long shaking durations.

Several seismic-related PFMs were deemed credible in the risk assessment, including seismic failures of numerous structural components. The assessment used ground motion parameters and time histories from a site-specific probabilistic seismic hazard analysis, including estimates of seismic loading at annual exceedance probabilities ranging to 1/100,000. Although the majority of considered and excluded PFMs were related to strong ground motions, the risk assessment showed that the primary contributor to total risk was a non-seismic PFM (Tainter gate failure due to trunnion friction). The case history provides a good example of how analyses of seismic loading, associated system response, and consequences of failure are incorporated into riskinformed decision making for dam safety.

10:00 am – 10:30 am Refreshment Break Exhibit Hall E 10:30 am – 12:00 pm Session Six: Go Pound Some Sand – Seismic Site Characterization Room 202-203 Moderated by A. Tom MacDougall, P.E., RJH Consultants PEER-NGL Project: Open Source Global Database and Model Development for the Next-Generation of Liquefaction Assessment Procedures Jonathan P. Stewart, Ph.D., P.E., Professor and Chair, Civil & Environmental Engineering, University of CaliforniaLos Angeles The Next-Generation Liquefaction (NGL) project was launched to (1) substantially improve the quality, transparency, and accessibility of case history data related to ground failure; (2) provide a coordinated framework for supporting studies to augment case history data for conditions important for applications but poorly represented in empirical databases; and (3) provide an open, collaborative process for model development in which developer teams have access to common resources and share ideas and results during model development, so as to reduce the potential for mistakes and to mutually

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benefit from best practices. NGL at present is a concept developed from multiple international workshops; aside from concept development, work to date has focused on compiling high-value case histories. We describe the project motivation, explain and illustrate how data resources will be compiled and organized, summarize preliminary results from ongoing data collection, describe needed supporting studies, and review project status and next steps.

Characterizing the Liquefaction Potential of Gravelly Alluvium Alexander P. Sturm, Ph.D. Student, and Jason T. DeJong, Ph.D., Professor, University of California-Davis Characterizing the liquefaction potential of project sites where gravelly alluvium is present poses particular challenges. Conventional field and laboratory techniques are significantly limited when large gravel particles either prevent their operation or adversely influence their measurements. Despite these challenges, liquefaction of gravelly alluvium in historical earthquake events (e.g.

Harder, 1994; and Cao et al., 2013) has demonstrated the need for reliable liquefaction assessment of these materials. Additional liquefaction sites, including many in Christchurch, NZ (Cubrinovski et al. 2011a,b), have involved liquefaction of gravel-free, sand-like layers deposited directly above or below alluvial gravel lenses. As a result, proper characterization of gravelly alluvium is a persistent need when assessing the liquefaction potential of a site.

The deposition of gravelly alluvium often involves complex, energy-dependent processes that can result in highly variable deposits comprised of gravel to clay sized particles. This pervasive spatial variability warrants a comprehensive site characterization approach which incorporates insights offered by multiple characterization tools and a firm understanding of the site geology.

Recent work from a Southern California dam, underlain by potentially liquefiable gravelly alluvium, will be presented. This work has allowed for the development of new approaches and techniques for improved characterization of gravelly alluvium. In particular, the benefit of continuous sonic sampling is demonstrated and a systematic method for determining gravel influence on SPT N values is outlined. Finally, the instrumented Becker Penetration Test (iBPT), a new closed-ended, large diameter penetrometer with direct energy measurement at the drill string tip is presented.

Estimating the Dynamic Shear Strength of Soils for Dam Seismic Safety Analyses Kristen Martin, P.E., Design Engineer, and Erik J. Malvick, Ph.D., P.E., Design Technical Specialist, Division of Safety

of Dams, California Department of Water Resources; and Richard J. Armstrong, Ph.D., P.E., Assistant Professor of Geotechnical Engineering, California State University The California Division of Safety of Dams (DSOD) regulates over 1,200 dams, 80% of which are founded on soil. Most of these dams are located near earthquake faults and are anticipated to experience large seismic loads. DSOD frequently conducts seismic evaluations of these dams in response to construction and changes in earthquake engineering practice.

A significant concern for our evaluations is judging soil strength loss due to a design seismic event. The two primary strength loss mechanisms are liquefaction (typically in sands) and cyclic softening (typically in clays).

Research of these mechanisms has been ongoing for over 50 years; however, application of analytical techniques can be controversial in the current state-of-practice. Many soils encountered at dam sites are not strictly sands or clays. Although these intermediate soils are susceptible to dynamic strength loss, it is not clear to what degree liquefaction or cyclic softening evaluations are applicable.

We have developed a method to help guide DSOD engineers in evaluating the potential for dynamic strength loss in soils. This method is a synthesis of research focused on estimating the dynamic shear strength of soil and organizes published criteria to enable more straightforward evaluations. The method is adaptable, recognizing the potential influence of future research and case histories that could evolve the state-of-practice. This presentation summarizes the method with an emphasis on practical considerations, including an example demonstrating the benefit this method can have on evaluating intermediate soils.

12:00 pm – 1:30 pm Lunch On Own 1:30 pm – 3:00 pm Session Seven: Earth vs. Earthquakes - Case Histories of Embankment Dam Designs Room 202-203 Moderated by Mark Schultz, P.E., California Department of Water Resources Insights Derived From The Seismic Performance Of Earth Dams Jonathan D. Bray, Ph.D., P.E., Faculty Chair in Earthquake Engineering Excellence, University of California-Berkeley Recent earthquakes have provided important insights regarding the seismic performance of earth dams. In some cases, poor performance resulted from liquefaction within

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an earth dam or its foundation. In other cases, earth dams were tested by severe earthquake shaking and performed satisfactorily. These observations of dam performance during recent earthquakes provides insights that when coupled with field, laboratory, and analytical studies advance the profession’s understanding of the effects of earthquakes on earth dam performance. Recent advances in liquefaction engineering are discussed in terms of their implications in evaluating the seismic performance of earth dams. Critical issues, such as the effects of fines and investigative methods, are discussed. The seismic performance of earth dams with materials that do not undergo severe strength loss can be evaluated using Newmark-type seismic slope displacement procedures.

Cases of long duration shaking produced by recent large subduction zone earthquakes enable one to check available procedures for this special case of earthquake loading.

earthquake before they were used to analyze the stability of the dam for the design earthquakes. The effects of the embankment weight on the penetration resistance of the CGA and its liquefaction resistance are also discussed.

Seismic Stability Evaluation of Dam Underlain by CoarseGrained Alluvium

3:00 pm – 3:30 pm Refreshment Break Exhibit Hall E

Lelio H. Mejia, Ph.D., P.E., Principal Engineer, AECOM Calero Dam is located about 13 miles southeast of the City of San Jose, in the seismically active San Francisco Bay Area of California. The dam is an embankment structure about 98 feet high that straddles a flat and wide stream valley blanketed by 15 to 20 feet of alluvium overlying bedrock. The dam was designed as a compacted earthfill with “impervious” upstream and “pervious” downstream zones. A cutoff trench was excavated through the alluvium upstream of the dam axis, and the alluvium was stripped from beneath the embankment upstream of the cutoff trench. However, downstream of the cutoff trench, the alluvium was left in place beneath the embankment. The lower 5 to 10 feet of the alluvium consists of sandy gravel and gravelly sand, whereas the upper 5 to 10 feet is mostly fine-grained soil of medium plasticity. The dam sustained the 1989 Loma Prieta Earthquake with only minor effects.

This paper will describe the field investigations, the characterization of the embankment and foundation, and the seismic analyses of the dam. Field investigations to evaluate the liquefaction potential of the alluvium included Standard Penetration Test (SPT) borings and Becker Penetration Test (BPT) soundings as well as measurements of shear wave velocity, Vs. The investigations indicated that the coarse-grained alluvium (CGA) under the downstream embankment is expected to liquefy during a large earthquake and lead to large deformation of the embankment. The seismic stability of the dam was evaluated with decoupled procedures and fully nonlinear deformation analysis methods. The analysis methods were checked against the observed performance of the dam during the Loma Prieta

Calaveras Dam Replacement Project: a Regulator’s View of Construction Oversight Russell Bowlus, P.E., Area 2 Engineer, Field Engineering Branch, Division of Safety of Dams, California Department of Water Resources This paper will present some of the challenges faced thus far in the regulatory oversight of the construction of a large embankment dam in a seismically active area of California, including foundation surprises, on-the-fly design reviews, and communication between a regulatory agency, owner, engineer, and contractor.

3:30 pm – 5:00 pm Exhibit Dismantle Exhibit Hall E 3:30 pm – 5:30 pm Session Eight: The Next Big Earthquake Debate: Seismic Hazard Assessments Room 202-203 A conference summary, panel discussion, and open forum.

Moderated by Keith Mills, P.E., G.E., Oregon Water Resources Department Panelists: • Richard Armstrong, Ph.D., P.E., Assistant Professor, Department of Civil Engineering, California State University-Sacramento • David Gillette, Civil Engineer, Bureau of Reclamation • Scott Shewbridge, Ph.D., P.E., Senior Geotechnical and Risk Specialist, Risk Management Center, US Army Corps of Engineers • Chris Tracy, C.E.G., Chief, Geology Branch, California Division of Safety of Dams

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ASDSO WEBINARS ON-DEMAND Looking for training opportunities right from the comfort of your desk? Not only does ASDSO offers monthly webinars, but ASDSO has a library of over 50 on-demand webinars perfect for your educational needs. Below is a small sampling of what is available to you at www.DamSafety.org. Check back as we add new webinar titles each month!

Geotechnical Topics • Seepage Rehabilitation for Embankment Dams (John France and Jennifer Williams, 2015) Hydrology & Hydraulics Topics • Introduction to Hydrologic Modeling Using Geospatial Information (Art Miller, Amanda Hess, and Chris Krebs, 2015) • Rainfall and Dam Safety – From PMP to the 100-Year Storm (Bill Kappel and Doug Hultstrand, 2015) Risk Analysis and Risk-Informed Decision Making • Intro to Potential Failure Modes Analysis (Douglas Boyer, 2014) • Applications of PFMA in Dam Safety (Douglas Boyer, 2014) Dam Operation, Dam Safety and Dam Emergency Response • Emergency Action Plan Basics (John France, 2012) • Identifying Hazards and Improving Public Safety at Low Head Dams (Bruce Tschantz and Paul Schweiger, 2013) Dam Construction • Foundation Preparation During Dam Construction (John France, 2014) Concrete Dams and Structural Concrete Issues • Introduction to Concrete Gravity Dams (Robert Kline, 2012) • Stability Evaluations for Concrete Dams (Robert Kline, Jr. and Guy Lund, 2013) • Rehabilitation of Concrete Dams (Robert Kline, 2014) Spillway Design and Spillway Issues • Stepped Chute Spillway Design for Embankment Dams (Sherry Hunt, 2014) Seismic Issues for Dams • Earthquake Hazards & Ground Motions (Lelio Mejia & William Fraser, 2014) • Seismic Stability Evaluation of Earth Dams (Lelio Mejia and Richard Armstrong, 2015) In addition, ASDSO provides bundled packages to provide a deep dive into selected topics, like the David Bowles Risk CD Bundle, a 3-CD set that includes the following webinars: Tolerable Risk Guidelines for Dams: How Safe is Safe Enough?; Risk Assessment Basics for an Individual Dam; and Risk Management for a Portfolio of Dams.

Find over 50 webinars just like these by visiting www.DamSafety.org.

DamSafety.org

Student Poster Displays Ottawa Sand F-65 Characterization and a Constitutive Model Calibration Ana Maria Parra Bastidas, Ross W. Boulanger, and Jason T. DeJong, University of California Davis Abstract: The characterization of Ottawa F-65 sand and the calibration of the non-linear constitutive model PM4Sand to those data are presented. This sand is the new standard sand for centrifuge testing at the Center for Geotechnical Modelling at the University of California Davis and the characterization of Ottawa sand F-65 is part of supportive studies for future centrifuge testing for earthquake engineering research. These studies aim for the validation of non-linear dynamic analysis methods for evaluating earthquake induced deformation for a range of civil infrastructure projects, with the particular focus comprised or founded over potentially liquefiable soils.

One purpose of the present study is to develop a database of experimental data describing the undrained monotonic and cyclic Direct Simple Shear (DSS) behavior of this sand for use by all research teams utilizing the centrifuge facilities. These tests include undrained monotonic and cyclic DSS tests on loose and dense normally consolidated specimens consolidated to confining stresses of 100, 400 and 800 kPa for the monotonic tests and to confining stresses of 50, 100 and 400 kPa for the cyclic tests. The second part of this paper is to present the calibration of the constitutive model PM4Sand (version 3) against this data. This constitutive model is a model which follows the basic framework of the stress-ratio controlled, critical state compatible, bounding surface plasticity model for sand presented by Dafalias and Manzari (2004). The calibration process emphasizes simulations of liquefaction behaviors during dynamic loading. The limitations of this model to reproduce the experimental results are discussed.

Lateral Spreading in Interlayered Deposits: Çark Canal in the Kocaeli Earthquake Sean Munter, Graduate Student, University of California Davis Making simplifying assumptions about stratigraphy is typically required for evaluating the potential for liquefaction-induced lateral spreading at a site. For example, widely used 1-D analysis methods (e.g., Lateral Displacement Index, LDI, or Liquefaction Potential Index, LPI) inherently assume laterally continuous layering, and 2-D methods assume an idealized cross-section with representative properties. These assumptions may carry

significant uncertainty, particularly for deposits with complex interlayering of coarse-grained and fine-grained sediments. Simplified methods may be overly conservative if coarse-grained deposits are laterally discontinuous within a matrix of fine-grained material with sufficient shear resistance to prevent large strains.

A detailed case history for a “potential” lateral spreading site located adjacent to Çark Canal in Adapazari, Turkey is presented. The site is underlain by fine-grained sediments interlayered with potentially liquefiable channel sediments. Ground motion intensity as high as 0.4 g occurred at the site during the 1999 M7.5 Kocaeli earthquake, but no damage was observed. However, 1-D analyses based on several CPT soundings predict significant lateral spreading displacements. To simulate the behavior of the site while considering stratigraphic variability, nonlinear dynamic analyses were performed with stochastic simulations of soil profiles of interlayered sand and clay. These simulations were produced using a transition probability geostatistical approach conditioned on available CPT data. The methods used for the analyses are presented and results are compared to those from the 1-D methods and field observations. The comparison shows the importance of using a sound geologic model to avoid overly conservative predictions that may arise from assumptions in simplified analyses.

Effect of Prior Strain History on Cyclic Strength and CPT Penetration Resistance of Silica Silt Adam Price, Graduate Student, Ross W. Boulanger, and Jason T. DeJong, Advising Professors, University of California, Davis The effect of prior strain history on cyclic strength and cone penetration test (CPT) tip resistance of non-plastic silica silt is evaluated. Undrained cyclic direct simple shear (DSS) tests wtih multiple cyclic shearing and reconsolidation stages are performed to characterize the evolution of cyclic strength with strain history. Cyclic strengths are evaluated for maximum shear strains of 1% and 3% in 15 cycles. Drained CPT tip resistances are estimated from simulated cavity expansion limit pressures.

Cavity expansion simulations allowing for changes in density from multiple cyclic loading and reconsolidation stages are performed in the finite difference program FLAC (Itasca 2014) using a modified version of the MIT-S1 elasto-plastic constitutive model (Pestana et al. 2002,

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Jaeger et al. 2012). Calibrations of MIT-S1 are performed using drained and undrained monotonic DSS tests as well as high stress one-dimensional compression testing.

Leblanc and Randolph’s method (2008) for projecting cavity expansion limit pressures onto a cone face is used to estimate CPT tip resistances.

The progression of cyclic strength and simulated CPT tip resistance during a series of cyclic loading and reconsolidation stages is presented. The developed relationships between cyclic strength and CPT tip resistance are shown to track the curvature of corresponding semi-empirical qc1Ncs-CRR triggering curves. Dependence of the presented relationships on failure criterion (maximum shear strain) is shown to be qualitatively consistent with the literature.

Implementation of iBPT on Industry Projects Max Rossiter, Kevin Kuei, Alex Sturm, and Jason DeJong, University of California, Davis The characterization of gravelly soils underlying embankment dams for evaluation of liquefaction potential is challenging and problematic with SPT or CPT investigation methods due to the high particle diameter to probe size ratios. Yet, the triggering curves for sands associated with these methods must be used in in analysis and design because a triggering curve for gravels does not exist. The instrumented Becker Penetration Test (iBPT) provides an alternative tool that provides a solution to this issue. The iBPT system directly measures the energy transferred to the soil at drill string tip during driving of a closed ended, large diameter Becker pipe. This enables direct measurement of an energy normalized penetration resistance, which can then be reliable converted to an equivalent SPT N60 value. The continuous measurements during penetration therefore provide a continuous profile of equivalent SPT N60 values with depth.

Implementation of the iBPT system as an in-situ characterization tool has taken place in industry projects in order to develop and validate the system, while providing valuable data to industry partners. To date, the iBPT system has been used successfully on five projects and tested over 3870 feet. The iBPT system has been implemented at four large projects in California and one large project in Vancouver, Canada. The iBPT performance and results from these projects are highlighted.

Developing Seismic Fragility Functions for Levees on Peat Yi Tyan Tsai, University of California - Los Angeles This study examines the field performance of 2 levee

systems in Japan during the 1993 Kushiro-oki (M 7.6) and 2003 Tokachi-oki (M 8.1) earthquakes. Both river systems are underlain by a layer of peat, a soft and compressible organic material, in the downstream region, which is expected to negatively affect the performance of levees on them. The seismic fragility functions express the probability of exceeding a damage level conditioned on demand parameter(s). Peak ground acceleration (PGA) is currently employed as the primary predictive parameter. The PGA experienced at the levees is estimated from neighboring recording stations using a spatial interpolation scheme that accounts for the difference in the site conditions between the stations and the levees.

Levee performance is quantified by the crack width, depth and subsidence for each 50 m long levee segment observed during post-event reconnaissance. The resulting fragility function is compared to others developed for levees on inorganic soils to assess the effect of peat in levee foundation.

Did you know ASDSO has a number of opportunities for students?

• Student Membership only $22 per year with full member benefits • Senior Undergraduate Scholarship Up to $10,000 • Paper Competition • Student Employment Center with Resume Posting Opportunities If you have students, friends, or interns working for your organization interested in the field of Dam Safety let them know how becoming involved with ASDSO can help them grow professionally.

To learn more about student benefits or ways to bring ASDSO into your classroom contact ASDSO at info@damsafety.org or visit DamSafety.org

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Exhibit Hall Map

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Exhibitor Information ACF Environmental Inc. Booth 306 Jim Nadeau 2831 Cardwell Road Richmond, VA 23234 207.659.6993 jnadeau@acfenv.com acfenvironmental.com At ACF Environmental, we understand that every minute on a project means money. So, our team of geosynthetic experts focuses to solve your project challenges—from the first phone call to the last detail. We have a wide range of solutions from the best suppliers and a network of warehouses to deliver them when you want. Plus, ACF offers technical and job site support, and custom products if that’s what is needed. We are in an industry that needs answers, not more questions. Getting the job finished quickly and effectively makes all the difference. There’s work to do. Let’s get it done.

AECOM Booth 410 Rich Millet Vice President 2870 Gateway Oaks Dr. Sacramento, CA 95833 916.679.2308 Richard.millet@aecom.com www.AECOM.com AECOM offers a wide range of planning, design, and program and construction management services, with nearly 100,000 employees serving clients in more than 150 countries. The recent incorporation of URS accelerates our vision to become the world’s premier fully integrated infrastructure firm.

Across all components of the in-project cycle — design, build, finance and perate, AECOM is a leader in dam and levee services. The firm’s experience covers the full range of dam safety activities including risk assessments, dam inspections, dam safety analysis, dam rehabilitation design and construction, environmental impact studies, and permitting. AECOM has supported the advancement of dam safety technology by organizing and presenting numerous ASDSO-sponsored training courses and workshops, including emergency action planning, seepage, and slope stability.

ASI Constructors, Inc. Booth 405 Del Shannon, P.E., MS Design Manager 1850 E Platteville Blvd.

Pueblo West, CO 81007 719.647.2821 info@asiconstructors.com www.asiconstructors.com ASI Constructors, Inc. (ASI) is a self-performing, heavycivil contractor specializing in the construction and rehabilitation of dams, hydroelectric and renewable energy facilities, pipelines, and other major water resource projects. ASI provides our clients innovative and costeffective solutions to their complex projects. Sophisticated engineering and construction technologies, an honest commitment to fair business dealings along with a partnering approach to our work, and a genuine culture of safety and quality management are the foundations that we build on in all of our projects. ASI maintains an operations-driven focus where performance defines success in all aspects of our business.

California Push Technologies, Inc. Booth 211 John Rogie President 820 Aladdin Ave. San Leandro, CA 94577 510.357.3677 john@cptinc.com cptinc.com / conetec.com California Push Technologies is a site investigation company based in the San Francisco Bay Area. Cooperating with sister company ConeTec, we provide services throughout the United States, Canada, Central, and South America, safely solving site investigation problems by generating high quality information, collected by expert personnel, using the best equipment. We operate advanced in-situ testing equipment including a wide range of cone penetration testing (CPT) probes, sampling systems, seismic equipment, geophysical tools and a fleet of purpose built in-situ testing vehicles capable of operating on land, over water, and in amphibious environments.

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Canary Systems, Inc. Booth 307 Peter Zimmerman, P.E. Dam Safety Group Manager 7151 Lee Highway, Suite 600 New London, NH 03257 423.661.3661 info@canarysystems.com www.canarysystems.com We are experts in designing, integrating, maintaining and analyzing all aspects of your dam safety monitoring projects, whether automated or manual. Our off-theshelf MultiLogger® software platform provides seamless integration of all your monitoring data, and our proprietary technology data acquisition systems are a costeffective way to improve or expand your project. Enjoy complex charting and calculations, powerful alarms and notifications configuration, one-click custom reporting, georeferenced layers, field entry of data, integration with virtually every sensor and data type, and more.

CARPI USA, Inc. Booth 303 Eric Schlosser, P.E. Project Engineer 4370 Starkey Rd., Ste 4D Roanoke, VA 24018 720.648.9015 eric.schlosser@carpitech.com www.carpitech.com Carpi specializes in waterproofing hydraulic structures including dams, canals, hydraulic tunnels, reservoirs, and intake structures with flexible impermeable geomembranes. In operation since 1963, Carpi provides design, materials, and installation, full comprehensive warranty, and has completed more than 1350 projects worldwide, including 150 dams. The maintenancefree, patented waterproofing systems are used for new construction, as well as rehabilitation, to address seepage through structures. Seepage reduction from CARPI systems can be monitored to verify improvement. If dewatering is not feasible, CARPI provides turnkey installation of patented systems to meet the challenges of underwater seepage repair on dams.

Cascade Drilling Booth 413 Steve Bratton Director Key Accounts 1010 Greene Street Marietta, OH 45750 614.402.1808

sbratton@cascade-env.com www.cascadedrilling.com Cascade Drilling is a nationwide provider of drilling services specializing in the application of our Sonic drilling system for geotechnical professionals. We have applied the Sonic system for numerous dam/earthen embankment and geotechnical construction projects globally in support of both design and construction efforts. For more information on our Sonic system visit, our website www.cascadedrilling.com or contact Steve Bratton at 614.402.1808.

Contour Sierra Aebi/Terratrac, LLC Booth 402 Steve Rankin President 17317 Coyote Ln. Anderson, CA 96007 530.357.3660 steve@contoursierra.com www.contoursierra.com Western Distributor of the Aebi tractor product line.

Exceptional equipment designed for applications in difficult terrain, including steep slopes and areas where low ground pressure and a minimal disturbance is required. Also a Menzi Muck walking spider excavator Dealer Crane Materials International - CMI Booth 312 Paul Schmitz 1165 Northchase Pkwy SE, Ste 300 Marietta, GA 30067 770.933.8166 pschmitz@cmilc.com www.cmilc.com Crane Materials International (CMI) is the world’s foremost manufacturer of synthetic sheet piling for marine structures, cut-off and containment, water control, and flood protection. Our family of brands, including ShoreGuard®, UltraComposite®, AlumiGuard™, and PileClaw® are solutions for applications such as seawalls, bulkheads, tide walls, jetties, scour protection, retaining walls, and other water control applications. CMI has decades of proven installations using vinyl, composite, and aluminum sheet piling as corrosive-resistant, environmentally-sustainable, cost-effective alternatives to traditional piling. All CMI piling is made in America.

Contact our Engineers and Sales Experts to assist with your next project.

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DeWind One-Pass Trenching Booth 210 Steve McCullick, CPA, CIT CFO and Manager 9150 96th Ave Zeeland, MI 49464 616.875.7580 steve@dewindonepass.com www.dewindonepasstrenching.com DeWind One-Pass Trenching Technology has developed its largest and most powerful Trencher to date specifically built for Dam and Levee Repair. This is the most powerful Trencher in the World with 3500 horse power and1,500,000 lbs of foot torque and a mixing speed of 14 feet per second. This New Monster Trencher is capable of Dam and Levee Seepage repairs of up to 125’ feet blg.

This “Mix in Place” Trencher can sit on top of any Dam or Levee and install Soil Bentonite (SBW) and or Soil Cement Bentonite walls (SCBW) in a single pass. See video of this new Trencher at Booth 210 DOWL Booth 406 Jason H. Thom, P.E. Senior Water Resources Engineer 222 North 32nd Street, Suite 700 Billings, MT 59107 406.869.6334 jthom@dowl.com www.dowl.com DOWL is a multi-disciplined consulting firm that has been providing project development services for nearly 60 years. DOWL has 470 employees and a western U.S. regional presence with 26 offices spread throughout Alaska, Arizona, Colorado, Montana, North Dakota, Oregon, Washington, and Wyoming.

DOWL has been actively involved in dam safety for approximately 35 years. We provide the full range of services from inspections, evaluations, investigations, design, construction administration and operations.

DOWL maintains state of the art capabilities to meet the current emphasis on cost-effective risk mitigation. The most efficient risk reduction measures often incorporate emergency planning, hazard reduction and early warning capabilities.

Gannett Fleming, Inc. Booth 403 Dean B. Durkee, Ph.D., P.E. Vice President and West Regional Director of Earth Science and Hydraulics

3838 North Central Avenue, Suite 1900 Phoenix AZ 85012 602.553.8817 ddurkee@gfnet.com www.gannettfleming.com Gannett Fleming’s rich history in dam engineering began with our first three projects in 1915, and engineering for dams has continued to be a key area of our expertise. Our Dam Practice has since grown to a national practice of more than 100 engineers and scientists focused solely on dams. Our Dams and Hydraulics Practice has completed designs for more than 100 new dams, modification of more than 500 existing dams, and safety evaluations of more than 1,000 dams. Throughout our 100-year history, the firm has developed specialized capabilities in core dam design and engineering disciplines including, geotechnical, hydrology and hydraulics, structural, electrical, and mechanical engineering.

GEI Consultants, Inc. Booth 203 Steve Verigin, P.E. 2868 Prospect Park, Suite 400 Rancho Cordova, CA 95670 916.631.4500 wrmarketing@geiconsultants.com www.geiconsultants.com Founded in 1970, GEI’s multi-disciplined team of engineers and scientists deliver integrated water resources, environmental, ecological, and geotechnical engineering solutions to diverse clientele nationwide. We work in a variety of construction scenarios, and can help our clients plan, design, schedule, and execute the complex elements of any project we work on. The firm has provided a broad range of consulting and engineering services on over 35,000 projects in 50 states and 22 countries, and is ranked number 107 on Engineering News Record’s (ENR) 2015 Top 500 Design Firms list. For more information, please visit www.geiconsultants.com.

GeoEngineers, Inc. Booth 209 Gordon Denby Senior Principal Geotechnical Engineer 8410 154th Avenue NE Redmond, WA 98052 425.861.6000 gdenby@geoengineers.com www.geoengineers.com GeoEngineers is an employee-owned, earth science, engineering and technology consulting firm with 14

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offices nationwide, that offers a variety of services related to dams, levees and dikes. Our geotechnical engineers and scientists are skilled at analyzing problems and developing creative and practical solutions. We also offer technology services related to designing, installing and monitoring instrumentation programs related to many types of engineering projects. We can address the range of dam safety engineering and environmental issues on any project. We provide clients with solutions that have resulted in significant cost savings, reduced permitting requirements, mitigated risks and reduced maintenance costs.

Geokon, Inc. Booth 407 Joelle Lang 48 Spencer St. Lebanon, NH 03766 603.448.1562 jlang@geokon.com www.geokon.com Geokon, the World Leader in Vibrating Wire Technology, manufactures a full range of high quality geotechnical instrumentation suitable for monitoring the safety and stability of a variety of civil and mining structures including dams, tunnels, foundations, mine openings, piles, etc. Geokon has been an innovative leader in vibrating wire technology for over 35 years and is well known throughout the world for its superb line of Vibrating Wire sensors. Geokon’s sensors exhibit excellent long-term stability, accuracy and reliability even in the most adverse conditions and our product line includes piezometers, pressure cells, strain gages, inclinometers, load cells, extensometers, dataloggers, etc.

Geo-Solutions Inc. Booth 205 Steve Artman Regional Manager 610 Garrison Street, Unit D Lakewood, CO 80215 303.284.9071 sartman@geo-solutions.com www.geo-solutions.com Geo-Solutions is a recognized leader in seepage barrier / cutoff wall technology. We provide cost effective solutions using proven techniques such as foundation grouting, slurry trenching and soil mixing using both large and small diameter augers. The versatility of our techniques can be applied to address a wide range of problems related to dam stability and seepage control in dam embankments and foundations. Geo-Solutions’ principal expertise is in

low permeability soil-bentonite, cement-bentonite, soilcement-bentonite and soil mixed cutoff barriers. These techniques or a combination of techniques can be used to solve a wide range of geotechnical challenges.

Gregg Drilling & Testing, Inc. Booth 315 Tim J. Boyd Director of Business Development 950 Howe Rd. Martinez, CA 94553 925.708.2036 tboyd@greggdrilling.com www.greggdrilling.com Gregg Drilling and Testing, Inc. (Gregg) is a full-service geotechnical and environmental site investigation contractor (for both on-land and overwater projects).

Gregg offers a wide range of drilling services, including the following: sonic drilling; mud rotary drilling; cone penetration testing (CPT); hollow-stem auger drilling and air rotary drilling. Gregg has 3 offices in California, an office in Texas and an office in Alberta, Canada. hydroGEOPHYSICS Inc Booth 412 Shawn Calendine Development 2302 N. Forbes Blvd.

Tucson, AZ 85745 520.647.3315 Scalendine@hgiworld.com www.hgiworld.com hydroGEOPHYSICS, Inc. (HGI) has over 20 years of experience providing geophysical services to the environmental, engineering, groundwater, mining, oil & gas, and natural resource exploration industries. We represent value and reliability in a geophysical service provider – our geophysicists, geologists, hydrologists and engineers are dedicated to finding solutions using industry-best equipment and custom-tailored geophysical services with a focus on safety, quality, and innovation.

We specialize in the application of 2D & 3D geophysical methods in complex environments, engineering and geotechnical applications, subsurface monitoring of fluid flow through geologic materials, leak detection & leak location, subsurface characterization, plume mapping, and buried infrastructure detection and mapping.

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Hydroplus Booth 311 Hasan Kocahan Manager 500 Harbour Place Dr., Ste. 1211 Tampa, FL 33602 813.223.3081 hkocahan@hydroplususa.com www.hydroplus.com Hydroplus is the developer of the “Fusegate System”, an ideal application that offers highly flexible and versatile solutions for both existing and new dams. Implemented over 30 countries across five continents since 1991, the “Fusegate System” allows for cost-efficient and safe modifications to undersized spillways bringing them up to modern standards without any loss in storage capacity and with a reliability degree equivalent to that of an uncontrolled spillway. The system can also provide additional live storage to dams without any impact on the ability of their spillways to pass the inflow design flood.

JAFEC USA Booth 314 Rakshya Shrestha Technical Specialist 2025 Gateway Place, Suite 180 San Jose, CA 95110 408.355.3456 rshrestha@jafecusa.com www.jafecusa.com JAFEC USA, Inc. is the U.S. subsidiary of Japan Foundation Engineering Company, Ltd. (JAFEC). JAFEC was established in 1953. With more than 60 years of experience, JAFEC USA is qualified to deliver reliable and economical ground improvement services for liquefaction mitigation, dam and levee stabilization, excavation support and seepage control.

KISTERS North America Booth 213 Matt Ables Chief Operating Officer 7777 Greenback Lane, Suite 209 Citrus Heights, CA 95610 916.723.1441 matt.ables@kisters.net www.kisters.net

data collected to monitor water related issues including dam safety, water quality, water flow and flood warning for work in the WISKI Time Series Database.

Phillips & Jordan, Inc. Booth 302 Gerry Arvidson Operations Manager 10201 Parkside Dr, Suite #300 Knoxville, TN 37922 865.688.8342 garvidson@pandj.com www.pandj.com Phillips & Jordan is licensed in all 50 states and has performed heavy civil construction work in over 40 states during the past decade on projects related to industrial, commercial, and residential construction; transportation (highway, rail, air); dams, levees, and reservoirs; power generation and delivery; oil and gas; landfills; and disaster debris management. Since its inception Phillips & Jordan has completed numerous water resource projects involving the construction of reservoirs, dams, impoundments, canals, and conveyance structures. In addition to new construction, Phillips & Jordan has rehabilitated aging water resource facilities, completed dam improvement projects, and completed major levee improvement projects.

Plum Laboratories, LLC Booth 408 Lee Williams Head of Research & Product Development 513 Memorial Blvd # 208 Springfield, TN 37172 615.719.1890 lee@plumcases.com www.plumcases.com Plum Laboratories researches “extensions in speed, reliability, security and distance” in voice and data communications and has developed an emergency communications system containing its own power, router, switch, server, firewall and creates four 802.11 networks connecting to cellular.

KISTERS is a multinational company that is recognized as the World Leader in the collection, processing and reporting of Time Series Data. KISTERS partners with agencies throughout the world to help them work with ASDSO West Regional Conference 2016 25

Pro-ROV Services Booth 411 Mark Stepanek 7514 Girard Ave # 1-740 La Jolla, CA 92037-5149 858.412.6150 mark@pro-rov.com www.pro-rov.com

SAGE Engineers, Inc. Booth 305 Stephanie Crary Business Development Manager 2251 Douglas Blvd., Ste 200 Roseville, CA 95661 916.677.4800 scrary@SAGEengineers.com www.SAGEengineers.com

Pro-ROV Services provides Underwater Imaging, Inspection and Hydrographic Survey to Industry, Government & Science. Services include Single Beam, Multi Beam and 3D Sonar Imaging, Long Distance Pipe Profiling, Ultra Sonic Thickness Testing, Laser Scaling, Side Scan Sonar, Sub Bottom Profiling, Bathymetric & LiDAR Survey, as well as Video and Audio and HD Still Photo Surveys. We are a small Service Provider, Insured to $2 million and travel globally. Stop by our booth 223 during the show and see some of our projects and to discuss upcoming projects you may have.

SAGE Engineers, Inc. is a California Certified Small Business specializing in dam safety engineering and water resources, hydropower, infrastructure, and asset management projects throughout California and the western United States. Our world-class technical experts can perform geotechnical/geological investigations, seismic stability evaluations, ground motion evaluations, civil/structural design, structural assessments & repair, and support with FERC and DSOD regulatory compliance.

Comprised of three offices located in Oakland, Roseville, and South Lake Tahoe. SAGE has combined engineering design and geosciences since 1997, allowing us to provide clients with practical solutions and cost-efficient designs for facilities that interface with soil, rock, and water.

Raito, Inc. Booth 414 David Bolton Business Development 23595 Cabot Blvd., Suite 106 Hayward, CA 94545 510.259.9900 DBolton@raitoinc.com www.raitoinc.com Raito, Inc. is the subsidiary of Raito Kogyo Co., Ltd., which is one of Japan’s premier specialized construction companies. Founded over 50 years ago, Raito Kogyo has earned an outstanding reputation for its highly advanced and specialized civil engineering technologies. Although Raito Kogyo operates in a wide range of civil engineering fields from infrastructure to subsurface construction, the operation of Raito Inc. is concentrated in soil mixing technologies such as RDM (Raito Deep Mixing method), DJM (Dry Jet Mixing method), RSW (Raito Soil-Cement Wall method), Jet Grouting, and other soil improvement technologies. The applications of these soil mixing technologies include seepage control, excavation support, foundation stabilization, slope stabilization, liquefaction prevention, pollution containment and soil fixation. Raito is continually developing and acquiring the most advanced construction technologies through our network of 50 offices in Japan and technical cooperation with overseas companies.

Stantec Consulting Services, Inc. Booth 310 Bob Eichinger, P.E. Senior Project Manager 8211 S 48th St Phoenix AZ 85044 602.707.4623 bob.eichinger@stantec.com www.stantec.com/water The Stantec community unites more than 15,000 employees working in over 250 locations. Our work— professional consulting in planning, engineering, architecture, interior design, landscape architecture, surveying, environmental sciences, project management, and project economics—begins at the intersection of community, creativity, and client relationships. With a long-term commitment to the people and places we serve, Stantec has the unique ability to connect to projects on a personal level and advance the quality of life in communities across the globe.

Sutron / Ott Hydromet Booth 311 Patrick Sanders Territory Manager 5600 Lindbergh Drive Loveland, CO 80538 650.941.4695

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psanders@otthydromet.com www.sutron.com Sutron Corporation offers customized Dam Safety Monitoring systems. These systems are designed to provide accurate measurements from geo-technical instrumentation to track settling, movement, infiltration, stresses and strains throughout and around the dam. The equipment is designed to operate in harsh environmental conditions.

Additionally Sutron Corporation and OTT Hydromet have recently combined to provide complete, end-to-end solutions for environmental water monitoring and dam management professionals by pairing highly accurate water quality and quantity sensors from OTT Hydromet with Sutron’s best-in-class telemetry and communication offerings Vertical Access Booth 204 Kent Diebolt Founding Partner PO Box 4135 Ithaca, NY 14852 607.257.4049 kent@vertical-access.com www.vertical-access.com Vertical Access LLC is a specialized inspection firm offering a suite of nondestructive testing and inspection services performed using industrial rope access techniques. Recognized leaders in the United States, Vertical Access is contracted by engineers and architects nationwide for hands-on investigations, installation of monitoring instrumentation and conditions documentation where gaining access is a challenge.

Experienced on dams, bridges, infrastructure, buildings, monuments, towers. Accurate data collection in the field is achieved using software developed for AutoCad called TPAS® (Tablet PC Annotation System) which allows technicians to input graphical and numerical conditions data and photos directly into CAD drawings while working at-height.

Watershed Geosynthetics, LLC Booth 207 Brad Cooley, P.E. Vice President, Civil Applications 11400 Atlantis Pl, Ste 200 Alpharetta, GA 30022 770.777.0386 bcooley@watershedgeo.com www.watershedgeo.com

Based in Alpharetta, GA, Watershed Geo is an innovative environmental and civil technologies company that specializes in geosynthetic products that solve earth’s greatest challenges with solutions that reduce risks, require virtually no maintenance and stand the test of time. Watershed Geo’s portfolio of products includes HydroTurf®, an engineered revetment solution specifically designed to provide armoring of hydraulic structures against high velocity and shear stress. It offers the aesthetics of vegetation combined with better performance than traditional hard armor and can be used for channel armoring, dam overtoppings, levees, outfall structures, shoreline protection and slope bank protection.

Willowstick Technologies, Inc. Booth 206 Val Gardner Director of Business Development 132 East 13065 South, Ste 100 Draper UT 84020 801.984.9865 vgardner@willowstick.com www.willowstick.com Willowstick Technologies maps subsurface water connection pathways. We map the magnetic field generated by the electric current we introduce directly into the subsurface water. We excel at mapping flow through karst and fractured rock as well as dam seepage. We map the location and depth of the full seepage pathway.

Worthington Products Inc. Booth 202 Paul S. Meeks 3405 Kuemerle Ct NE Canton, OH 44705 330.452.7400 pmeeks@tuffboom.com www.tuffboom.com 15 Years. 50 Countries. One Company. It’s not just about our experience. It’s how we use it to improve yours. For 15 years, in more than 50 Countries, Worthington’s waterway barriers have proven themselves in all conditions.

Whether you are controlling debris, protecting the public from a dangerous spillway or guiding migrating salmon around a dam, you can count on Worthington offer better solutions, common sense designs, quality products and outstanding customer service.

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Exhibitor Follow Up Company: _________________________________________________ Product/Service: _________________________________________________________ Notes: ________________________________________________

Company: _________________________________________________ Product/Service: _________________________________________________________ Notes: ________________________________________________

Company: _________________________________________________ Product/Service: _________________________________________________________ Notes: ________________________________________________

Company: _________________________________________________ Product/Service: _________________________________________________________ Notes: ________________________________________________

Company: _________________________________________________ Product/Service: _________________________________________________________ Notes: ________________________________________________

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Conference Evaluation

2016 ASDSO West Regional Conference 1. Have you attended previous ASDSO Conferences? YES

__

NO

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2. If yes, how would you rate the overall quality of the 2016 West Regional Conference in comparison to the previous ones? Would you say it was:

BETTER __

ABOUT THE SAME __

NOT AS GOOD __

3. How would you rate the overall quality of this year’s technical program?

EXCELLENT __ GOOD __ FAIR __ POOR __

4. How would you rate the overall quality of the speakers?

EXCELLENT __ GOOD __ FAIR __ POOR __

5. Please list the top one or two presentations you feel were the most valuable, and briefly explain why. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ 6. What topics would you like to see addressed in future conferences? ______________________________________________________________________________ ______________________________________________________________________________ 7. Please rate the following (1 highest to 5 lowest): REGISTRATION PROCESS ____ MEETING FACILITIES ____ EXHIBIT SHOW ____ HOTEL ACCOMMODATIONS ____ Comments on any of the above: ____________________________________________________ ______________________________________________________________________________

8. Please make suggestions for the improvement of the Conference in general. ______________________________________________________________________________ ______________________________________________________________________________ _____________________________________________________________________________ Thank you for your time and participation. Please return this evaluation form to the registration desk, or scan and email to info@damsafety.org

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Professional Development Hours The Association of State Dam Safety Officials is a national professional association for individuals working in the area of dam safety in the U.S. Part of ASDSO’s mission is the education of government officials, dam owners and consultants on specialized topics related to the dam safety industry.

In order to apply for credit for Professional Development Hours, please complete the form below. Fill in the number of hours in attendance in each session, complete the participant’s information section, and retain for your records, or submit, along with a copy of the conference or seminar topical agenda, to the organization you belong to that requires such notification. Please note: ASDSO is not an approved provider for New York professional engineering license continuing education. Please do not return this form to ASDSO.

Conference/Seminar Name:

ASDSO 2016 West Regional Conference, Engineering for Extremes Part 1: Seismic Design for Dams in the Western U.S. March 9-11, 2016 Sacramento, California

Hours in Attendance Thursday, March 10 technical sessions

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Friday, March 11 technical sessions

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TOTAL HOURS _____

Participant Information

Name: _____________________________________________

Title: _____________________________________________ Company/Agency: ____________________________________ Address: ____________________________________________ Phone: ______________________________________________

The above participant attended the ASDSO 2016 West Regional Conference, Engineering for Extremes Part 1: Seismic Design for Dams in the Western U.S. and is entitled to the number of PDH credit hours indicated:

_____________________________________________________________________________________ Susan A. Sorrell, ASDSO Training Director

Date

ASDSO West Regional Conference 2016 31

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Seepage Cutoff Barriers Soil-Bentonite and Cement-Bentonite Slurry Walls Deep Soil Mix Walls Jet Grout Curtain Walls Soil Mixing for Slope Stability Foundation Grouting Deep Sand Filters using Polymer Slurry Trenching Construction Services Offered Throughout North America

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