Tim (Xiaobin) Lin has extensive experience in geotechnical investigation and design for waterfront structures, bridges, highways, high-rise buildings, and landslide/rockfall projects. His clients include the US Army Corps of Engineers, US Navy, Hawai‘i Department of Transportation, and the Office of Hawaiian Affairs. He has 17 years of experience, the last ten in Hawai‘i. He is the current Chair of Geo-Institute’s Hawai‘i Chapter, and is very active in the American Society of Civil Engineers (ASCE) Deep Foundations Committee and Computational Geotechnics Committee.

John Bingham, PE, has 19 years of broad ranging geotechnical, civil, environmental, and natural resource engineering design, management and construction experience. John's geotechnical experience includes landslide and seawall stabilization, ground improvement, foundation and pavement design, transportation, excavation shoring projects, and abandoned mine land reclamation. His projects have involved riverbank, embankment/levee, slope, and shoreline stabilization using a variety of methods.

Joe Krieter is an Aquatic Ecologist with 21 years of experience. Joe has consulted for the timber industry, port authorities, private developers, nonprofit research groups, and governments. He has significant experience on the lower Willamette and Columbia Rivers, and has performed fisheries assessments in Pacific Northwest rivers and estuaries related to habitat impacts, fish passage, underwater noise, and water and sediment quality.

Tim Blackwood, PE, GE, CEG, LEED AP, has 23 years of professional geotechnical engineering and geologic experience in Oregon, the Pacific Northwest, and Hawaii. Tim has completed hundreds of projects in all aspects of geotechnical engineering and geology. His range of experience includes broad evaluations at a watershed scale through detailed site investigations for public, state, federal, commercial, and industrial clients.

Doug Lindquist, PE, GE, Geotechnical Engineer, is a frequent speaker and regional expert in seismic design, vertical development, and waterfront structures. He has overseen many high-profile projects including 18 peer-reviewed high-rise towers, the tallest mechanically stabilized earth wall in the Western Hemisphere (150-foot-tall wall at the Sea-Tac Airport), and the 90-foot-deep approach excavations to the biggest bored tunnel in the world (58-foot-diameter SR 99 bored tunnel). Doug has served as the President of ASCE Seattle Section Geotechnical Group and is a voting member for the ASCE 61 code standard and the SEAW Earthquake Engineering Committee.

Mark Dagel, LHG, has 31 years of experience with water resource studies, contaminated site investigation, and support for environmental impact statements. His water resource projects have involved water rights, water law, and the water right permitting process. Mark has managed environmental investigations and cleanup of industrial sites, landfills, plating shops, dry cleaners, mining and smelter sites, petroleum retail and terminal operations, and waterfront sites.

Janice Marsters, PhD, PE, has extensive experience in environmental planning, permitting, investigation and sampling design, and regulatory compliance. She has provided consulting services for design-build projects, and has a solid knowledge of federal project environmental requirements. For 25 years, Janice has provided storm water consulting expertise to municipalities, construction contractors, and private landowners as they grapple with increasing storm water regulation. She has a proven track record of developing practical solutions to complex storm water issues, and assisting entities with their storm water permit compliance.


Mike Ehlebracht, LHG, Environmental Services Business Unit Leader, has 27 years of experience in organic geochemistry.  Mike has managed numerous remedial investigations, feasibility studies, and engineering designs at commercial, industrial, and Brownfield sites. He has served as a member of the Interim TPH Policy Working Group that assisted the Washington State Department of Ecology in developing a risk-based cleanup approach for petroleum-contaminated sites. He also participated on the Fate and Transport subcommittee that developed techniques for modeling the fate and transport of contaminants.

Chris Poulsen, PE, has 21 years of experience including site remediation, site investigations/characterization, project engineering, and project management. He has successfully managed projects involving soil and groundwater remediation design (CERCLA, RCRA, MTCA), construction management/oversight, stormwater management/design, pollution prevention plans, spill control and countermeasure plans, industrial wastewater treatment plant design, remediation system design, operation and maintenance and monitoring, feasibility studies, risk assessment, cost estimating, and phase I and II environmental site assessments.

Rick Ernst, RG, has 26 years of experience managing environmental contracts and projects, including contracts for the Port of Portland, the Portland Development Commission, and the Oregon Department of Environmental Quality.  He has supervised characterization and remediation activities at over 100 sites in Oregon and southwest Washington.

Allison Pyrch, PE, is a Geotechnical Engineer with 15 years of experience. Allison has worked tirelessly to promote disaster resilience, and was named as a Daily Journal of Commerce 2016 Women of Vision award winner. She was part of the team that developed the Oregon Resilience Plan and is a certified trainer for the California Emergency Management Safety Assessment Program for building evaluations after earthquakes and other disasters. The need for such planning led her to found Salus Resilience, a partnership of Hart Crowser and 3 other firms that offers comprehensive resilience planning.

Angie Goodwin, LHG, is a Hydrogeologist and environmental construction management specialist with over 10 years of experience. She has expertise in project management, environmental assessments, remedial investigation, environmental construction management, waste characterization, quantitative hydrogeology, and computer modeling.  Her management experience includes subsurface investigations, environmental construction oversight, waste profiling for disposal, and contaminated soil and groundwater management.

Mike Schlegel has 37 years of professional experience specializing in arctic engineering and geoscience for oil and gas exploration and development. This includes multi-discipline project management for industry engineering and development projects. He conducts detailed engineering and technical evaluations of the performance of offshore drilling and production structures in arctic applications. He has many years of arctic experience with geotechnical, geoscience, ice, and construction management for exploration and new development projects.

Pam Gunther manages and prepares inter-disciplinary environmental assessments (EAs), environmental impact statements (EISs), and permitting compliance documentation. She is a Principal Ecologist with expertise in wildlife, fisheries, vegetation, listed species, and public involvement.  She managed preparation of over 85 EA/EISs including both programmatic and project specific documents throughout the western United States.  Pam’s expertise is in long-range planning and management of natural resources in large project areas with associated complex and controversial issues.

Jim Shannon has 19 years of natural resource experience in the Pacific Northwest and Alaska. His project experience involves habitat characterization and estimation of fisheries and wetland resources in riverine, estuarine, and marine environments. This work includes fish population and habitat studies for the Elliott Bay Seawall Replacement Project, wetland mitigation monitoring, wetland mitigation plan development, and eelgrass and macroalgae surveys. His clients have included the Port of Tacoma, Washington Department of Transportation, the City of Redmond, and various private entities.


John Haney, PE, manages Hart Crowser's Spokane office and is a Senior Associate Environmental Engineer with 16 years of experience managing environmental investigation and cleanup of contaminated residential, commercial, and industrial properties. He has been involved in the Spokane Convention Center expansion, developing the City of Spokane’s Water Use Efficiency Assessment program, the planned University District pedestrian bridge, and the Pend Oreille Mine. He is active in Greater Spokane Incorporated; The American Exploration & Mining Association; Society for Mining, Metallurgy, and Exploration; and the Air and Waste Management Association.

Michael Schmitz, PE, has 13 years of experience in geotechnical consulting. His experience includes planning, design, and construction of infrastructure, commercial, and industrial developments. These projects have included utilities, roadways, airports, buildings, bridges, slopes and embankments, buildings, levees, industrial facilities, parks, and trails. He has provided project management and technical review of numerous projects from design through construction.

Brad Hermanson is a chemical and environmental engineer, and Project Management Professional (PMP®) with 30 years of consulting experience as a project manager, program manager, and process engineer for industrial and government clients. His background includes hazardous waste and sediment investigation and site remediation, water and wastewater treatment system design, project risk management, decision support, and regulatory support for state and federal environmental cleanup. He has managed some of the most complex environmental projects in the Pacific Northwest, including programs with 30 project managers and consulting fees of over $5 million a year.

Jim Starkes has 28 years of experience.  He has produced environmental assessments, environmental impact statements, and environmental baseline documents, and biological assessments in compliance with NEPA, SEPA, and the Endangered Species Act in Alaska and the Pacific Northwest. He has conducted numerous field investigations collecting fish, sediments, surface water, and benthic community samples in marine and stream environments. Jim's projects have included habitat mitigation and monitoring the success of habitat restoration projects.

Garry Horvitz, PE, LEG, has 41 years of experience, with a strong focus on waterfront projects. He has managed complex projects at most Pacific Northwest ports, all Pacific Northwest U.S. Navy facilities, and numerous other waterfront facilities. He is also expert in geotechnical engineering for highrise buildings. Garry provides senior-level review for many of Hart Crowser’s projects. He is known for innovative geotechnical design approaches to address site constraints and challenging site conditions.


Rolf Hyllseth, PE, LG, has 27 years of experience as a geotechnical engineer on a wide variety of projects throughout Washington, Oregon, Idaho, and Montana.  His experience includes major civil engineering projects such as industrial waterfront facilities, port facilities, low to mid-rise buildings (mixed use), deep underground structures, stormwater handling facilities, roadways and bridges, infrastructure improvement projects, utility trench/pipelines, railroad yards, municipal landfills, park facilities, and telecommunication facilities.

Vijayalakshmi Tummala, PE, 12 years of experience includes NPDES permitting and compliance for MS4, industrial and construction clients; storm water management; water quality; asset management; floodplain mapping and studies; and pollution prevention projects. She specializes in BMP development, erosion control, IDDE, post-construction BMPs and TMDLs. Vijaya has worked extensively in SWM facility design, inspection, and maintenance, including work on low impact development (LID). She has prepared stormwater pollution control plans (SWPCPs) and stormwater pollution prevention plans (SWPPPs).

Roy Jensen, LHG, is a Hydrogeologist with 28 years of experience.  He has particular expertise in groundwater monitoring, tidal influence studies, groundwater and contaminant transport modeling, and borehole geophysics. He also provides hydrogeologic support for a variety of geotechnical projects including construction dewatering, evaluation of groundwater seepage for slope stability problems, and surface water infiltration evaluation. He has managed and directed environmental investigation and remediation projects for numerous properties.

Jeff Wagner, PE, Chief Operating Officer, is a Senior Principal who manages the firm's Geotechnical Services. He has 34 years of  experience applying geotechnical engineering to the planning, design, and construction of roadways, bridges, slopes and embankments, tunnels, buildings, industrial facilities, highrises, and other developments. He has managed the reclamation/closure of dozens of abandoned coal mine features. He uses his technical and management skills to analyze complex site conditions and develop innovative solutions to project challenges.


Bob Jenson, CPA, Chief Financial Officer, is responsible for overseeing finance and risk management for Hart Crowser, Inc. He develops and maintains financing relationships, and analyzes and works through practical implementation of improvements in business productivity systems, processes, and controls. He has been with Hart Crowser for 15 years.  Bob is a certified public accountant.  He is professionally affiliated with the Washington Society of CPAs and American Institute of CPAs.


Madan Karkee, PhD, PE,  is a Geotechnical Engineer whose projects range from evaluations of major earthquakes in Japan, to database system development for seismic hazard evaluation of Kathmandu Valley in Nepal, to large-scale building developments. He specializes in earthquake engineering, soil dynamics including soil structure interaction, and deep foundations. With his substantial experience in teaching and research, including as professor at Akita Prefectural University in Japan, Madan finds natural roles in mentoring staff engineers and discussing technical disciplines with clients and colleagues.

Scott Wright, LEG, has been with Hart Crowser since its start in 1974, and has been involved in over 4,000 projects.  He supervises our engineering geologists and coordinates field exploration programs, including subcontractor contracts, site utility checks, coordination of street use permits, traffic control plans, and right of entry agreements.  Scott has a thorough understanding of exploration equipment and is very familiar with the exploration subcontractors in the Pacific Northwest.


Susan Kemp, Marketing Manager, has 24 years of experience in the engineering industry, and has been with Hart Crowser since 2000. She is responsible for proposals, public relations, and social media. She helps strategize business development opportunities, and coaches staff for presentations and interviews. Susan is  the Education Director for the Seattle chapter of the Society for Marketing Professional Services (SMPS).


Julie Wukelic, CEM, CEI, is a Senior Principal with 34 years of experience. She is a leading expert when it involves developing practical and technically sound solutions for cleanup with development. Julie has evaluated hundreds of properties that were planned for development, sale, or purchase. Julie assists her clients in assessing the environmental risks and understanding the business aspects of these risks.