At EKI, we strive to foster a culture that is built on trust, respect, teamwork, creativity, and empowerment.

Our staff comprises an effective mix of disciplines, including environmental engineers, civil engineers, chemical engineers, chemists, geologists, hydrologists, and environmental scientists.  This complementary mix is an asset to understanding and effectively resolving a wide variety of complex technical challenges.

EKI’s officers, senior project managers and senior staff have many years of experience providing environmental and water, wastewater, and water resources services.  Most of these individuals have been together at EKI for 10 years or more.  This continuity promotes teamwork that allows EKI to efficiently devise innovative solutions for our clients’ technical, financial, and regulatory constraints.  The low turnover of our staff permits the development of long-term relationships with our clients.

Information about our officers, senior project managers, and senior staff is provided below:

Michelle Kriegman King, Ph.D.

President

Contact: | (650) 292-9100 x3063 | VCF Card
Education: Stanford University, Ph.D. in Environmental Engineering, 1993
Stanford University, M.S. in Environmental Engineering, 1987
Princeton University, B.S.E. in Geological Engineering, 1985
Years of Experience: 30 years

Technical Specialties:

As President, Dr. King is responsible for the overall direction and quality control of industrial, scientific and engineering services. Her experience and background is in environmental chemistry, geological engineering, and environmental engineering. She specializes in working with clients and regulatory agencies to facilitate risk-based remedial actions for redevelopment of contaminated properties and former military bases, transfer of environmental cleanup responsibility at military bases, overseeing and performing human health risk assessments, performance of site assessments including vapor intrusion assessments, and evaluation of the fate and mobility of organic and inorganic chemicals in soil and aqueous environments. She also directs investigations of aquifers containing VOCs and metals, evaluations of groundwater treatment systems, and assessments of the potential for chemical transformations. Dr. King plays a key role in evaluating chemical and physical data from the field and identifying the processes that potentially control the ultimate fate of the chemicals of concern in environmental systems.

Theodore G. Erler, P.E.

Founder/Board Member

Contact: | (650) 292-9100 | VCF Card
Education: Northwestern University, M.S. in Environmental Engineering, 1974
University of Southern California, B.S. in Chemical Engineering, 1970
Whittier College, B.A. in Chemistry, 1966
Years of Experience: 45 years

Technical Specialties:

Mr. Erler is a Board Member and co-founder of Erler & Kalinowski, Inc. He serves clients as a principal-level Project Manager on significant projects in the areas of hazardous waste management, site assessment and remediation and industrial waste treatment. Mr. Erler’s experience spans a broad variety of challenging environmental projects, including work concerning water quality evaluation, water and wastewater treatment and design, cleanup and management of hazardous wastes, analysis of remedial actions, environmental issues regarding property and asset transfers and consultation support for litigation. He has directed activities at U.S. EPA, State and County lead sites with diverse problems. These efforts have managed DNAPL and LNAPL releases to soil and groundwater, soils contaminated with petroleum hydrocarbons, heavy metals, perchlorate, pesticides, PCBs and PAHs and heterogeneous industrial waste landfills containing diverse hazardous constituents.

Thomas W. Kalinowski, Sc.D.

Founder/Board Member

Contact: | (650) 292-9100 | VCF Card
Education: Harvard University, Sc.D. in Environmental Health Sciences, 1981
Harvard University, M.S. in Environmental Health Sciences, 1977
Northwestern University, M.S. in Environmental Engineering, 1974
Northwestern University, B.S. in Chemical Engineering, 1972
Years of Experience: 43 years

Technical Specialties:

Dr. Kalinowski is a Board Member and co-founder of Erler & Kalinowski, Inc. He has over forty years of experience in environmental engineering and environmental health science projects. He has been the principal program manager for multiple projects performing site characterizations, chemical fate and migration modeling, treatability testing, and identification and evaluation of remedial options, costs and schedules. He is experienced with the evaluation of air, water, and soil contamination and specifically the development of public health risk assessments and risk management plans for redevelopment and reuse of contaminated properties.  Since 1980, he has managed environmental site assessments and preparation of engineering feasibility studies to select cost-effective approaches for the remediation of contaminated soils, soil vapor, and groundwater and in the control of air contaminants and vapor intrusion.

Edward P. Conti, P.G., C.E.G., C.Hg., QISP/ToR

Vice President

Contact: | (415) 302-5625 | VCF Card
Education: Duke University, Durham, North Carolina, M.S. Geology, 1987
Cornell University, Ithaca, New York, B.A. Geology, 1983
Years of Experience: 30 years

Technical Specialties:

Mr. Edward Conti is a professional geologist with more than twenty-five years of experience working on groundwater and surface water quality projects, with emphasis on stormwater management, site characterization, remedial design and implementation, risk-based correction action, brownfields redevelopment, water quality and waste discharge permitting, regulatory negotiation, and litigation support.  Mr. Conti has directed projects throughout the U.S. and is recognized for his expertise at leading strategic negotiations with regulatory agencies during development of orders and permits, including National Pollutant Discharge Elimination System (NPDES) permits and waste discharge requirements for stormwater and industrial wastewater, and during enforcement proceedings.  His work has included assessment of industrial processes that affect wastewater and stormwater quality, toxicity evaluations, and evaluation of wastewater and stormwater treatment alternatives.

Mr. Conti has worked on due diligence assignments associated with mergers and acquisitions throughout U.S., in Canada, and in Europe. Many of these projects involved completing due diligence of, and assessing potential environmental liabilities associated with large portfolios of properties.  Facilities evaluated have included fleet vehicle maintenance, car rental, steel production, resort and manufacturing.

Engaging regularly in strategic consultation related to litigation support and regulatory compliance, Mr. Conti has provided expert consultation on culpability and cost allocation involving complex, commingled groundwater plumes; discharge of chemicals to surface water and sediment, herbicides allegedly related to forestry operations in a surface water drinking water supply; discharges of mine drainage to surface water bodies; and discharges of wood treatment chemicals including dioxins to groundwater, surface water, and sediment. He has been tasked as lead technical negotiator with regulatory agencies and agency counsel (state Attorneys General) at critical stages of enforcement and penalty determination and has followed many projects through to successful outcomes.

Mr. Conti’s work often involves characterization and remediation of dioxins in the environment.  These efforts include evaluating alternative, cost-effective chemical analysis methods and dioxin treatment technologies. His work related to dioxins has been presented at international conferences related to persistent organic pollutants.

Anona L. Dutton, P.G., C.Hg.

Vice President

Contact: | (650) 292-9100 x3060 | VCF Card
Education: Stanford University, M.S. in Hydrogeology, 2000
Stanford University, B.S. in Environmental Science, 1998
Years of Experience: 16 years

Technical Specialties:

Ms. Dutton has over sixteen years of professional experience performing and managing water resources projects.  She has managed multi-million dollar efforts to secure reliable water supplies for water agencies and developers, including leading the technical efforts to minimize the water footprint of new and existing development, assessing groundwater and surface water supply yields, installing groundwater wells, securing water transfer options, and evaluating the feasibility of developing new water supply sources such as recycled water, desalination water, and other non-potable sources (stormwater, rainwater, and greywater).   She is also deeply involved in Sustainable Groundwater Management Act implementation throughout the State, including provision of strategic and technical support for Groundwater Sustainable Agency formation and basin boundary adjustments. Her work to support public sector clients has included conducting Water Supply Assessments, developing Water Supply Master Plans, supporting the development of Water System Master Plans, and preparing Urban Water Management Plans and Water Conservation Plans.  She has provided technical and strategic support to private sector clients on a broad range of complex water-related and environmental issues. Having worked in both the private and public sectors, Ms. Dutton brings a unique perspective to her work to meet the needs of her municipal, private, and attorney clients.

Earl James, P.G.

Vice President

Contact: | (650) 292-9100 x3126 | VCF Card
Education: California State University, Hayward, M.S. in Environmental Geology, 1982
California State University, Hayward, B.S. in Geology, 1977
Years of Experience: 39 years

Technical Specialties:

Mr. James is a Principal geologist with thirty-nine years of experience in providing scientific support for and managing geoscience investigations and construction projects.  He has particular experience in managing large, complex brownfield redevelopment projects in urban environments.  He is familiar with the geologic, geochemical, geophysical, and engineering techniques applicable to the study of subsurface problems and the development and implementation of remedial measures.  He has worked on projects involving both the extraction and injection of fluids in a wide variety of geologic environments.  His experience includes evaluations of contaminated sites, oil fields, and geothermal fields.  He has served as project manager, project geologist, and expert witness for litigation on a wide variety of projects.

Vera H. Nelson, P.E.

Vice President

Contact: | (650) 292-9100 x3069 | VCF Card
Education: Stanford University, Degree of Engineer in Environmental and Water Resources Engineering and Science, 1986
Stanford University, M.S. in Water Resources Engineering, 1985
Dartmouth College, B.A. in Engineering Science, 1983
Years of Experience: 33 years

Technical Specialties:

Ms. Nelson is a registered civil engineer with thirty-three years of professional consulting experience performing hydrogeologic studies and remedial investigations; managing implementation of soil and groundwater remedial actions; assisting with environmental aspects of redevelopment of industrial properties; and providing litigation support services.  In support of these activities, she has performed extensive aquifer testing and analytical and numerical modeling to evaluate subsurface chemical transport and to design extraction and other groundwater remedial systems.  Ms. Nelson utilizes many of these same skills and tools while performing water supply assessments and water resources evaluations for municipalities and developers of non-contaminated properties.  She has also been involved in the development of human-health risk and vapor intrusion assessments, construction documents, engineering cost estimates, and risk management plans for redevelopment and remediation of industrial properties.

Andrew N. Safford, P.E.

Vice President

Contact: | (650) 292-9100 x3073 | VCF Card
Education: Stanford University, M.S. in Civil Engineering, 1991
University of California, Davis, B.S. in Chemical Engineering, 1984
Years of Experience: 32 years

Technical Specialties:

Mr. Safford is a registered professional chemical and civil engineer with thirty-two years of practice.  He has evaluated and implemented remedial actions and pollution controls at operating manufacturing facilities and at other sites where environmental issues arise.  In support of these remedial actions, Mr. Safford has overseen the preparation of numerous feasibility studies that are consistent with the NCP and were presented as either stand‑alone documents or in remedial action plans that meet Section 13304 of the State of California Water Code and Chapter 6.8 of the State of California Health and Safety Code. Mr. Safford is experienced in the assessment and remediation of soil and groundwater containing VOCs, petroleum hydrocarbons, PCBs, metals, and other contaminants.  Mr. Safford provides quality control review of many EKI projects involving chemical processes and advanced waste treatment, as well as well as overseeing environmental regulatory compliance audits of manufacturing facilities and detailed engineering cost estimation.

Stephen A. Tarantino, P.E.

Vice President

Contact: | (650) 292-9100 x3077 | VCF Card
Education: University of Santa Clara, B.S. in Civil Engineering, 1970
Years of Experience: 46 years

Technical Specialties:

During over forty-five years of professional experience, Mr. Tarantino has led the implementation of a wide range of projects. His work includes planning (including numerous potable water system master plans and identification of alternative water supplies), design, cost estimation, and construction supervision for potable water, domestic wastewater, industrial wastewater, storm water, groundwater, and remediation projects including excavation and removal of contaminated soil, soil vapor extraction, and groundwater treatment systems. Mr. Tarantino has repeatedly demonstrated both the technical and management expertise needed to ensure that projects meet client needs and are performed on time and within budget.

Jami Striegel Orloff, P.E.

Principal Engineer

Contact: | (650) 292-9100 | VCF Card
Education: Oklahoma State University, M.S. in Environmental Engineering, 1998
Oklahoma State University, B.S. in Civil Engineering, Honors Program Degree, 1996
Years of Experience: 20 years

Technical Specialties:

Ms. Striegel Orloff has twenty years of experience in environmental engineering and consulting in California and other states for commercial and industrial facilities.  She has led multi-disciplinary teams of scientists and engineers to perform site assessments, characterization, and remediation in support of client goals including property transactions, regulatory compliance and closure, environmental due diligence, brownfield site assessment and redevelopment, litigation support, and negotiation of agency orders for site investigation and cleanup and abatement.  Ms. Striegel Orloff is also experienced in evaluating soil, soil gas, groundwater, and surface water containing various contaminants such as chlorinated VOCs, refrigerants, petroleum hydrocarbons, nitrates, herbicides, metals, and other compounds.  Her technical expertise includes developing site conceptual models; preparing investigation and assessment reports, remediation plans, and risk assessments; coordinating environmental aspects of redevelopment planning and construction; and preparing technical documents in support of litigation.

Karen A. Gruebel, Ph.D.

Principal Geochemist/ Environmental Engineer

Contact: | (650) 292-9100 x3058 | VCF Card
Education: Stanford University, Ph.D. in Environmental Engineering Science, 1991
University of North Carolina, Chapel Hill, M.S. in Marine Science, 1981
University of New York, Binghamton, B.S. in Geology, 1979
Years of Experience: 37 years

Technical Specialties:

Dr. Gruebel is a geochemist and environmental engineer with over thirty-five years of experience in field, laboratory, and modeling techniques used to evaluate the fate and mobility of organic and inorganic constituents.  Dr. Gruebel designs and implements in situ remediation in aquifers, as well as evaluates treatment techniques for drinking water, wastewater, and acid drainage.  Her academic training and project experience include aqueous geochemistry, geology, hydrogeology, hydrologic and geochemical modeling and monitoring, and traditional wastewater and potable water engineering, and hydrologic and geochemical modeling and monitoring. Dr. Gruebel also has extensive experience working on EPA Superfund Sites governed by CERCLA and has helped clients negotiate Statements of Work with EPA to promote flexible and streamlined work scopes.  Dr. Gruebel has directed the preparation of numerous work plans, treatability studies, and design-associated documents, with an eye toward implementing effective remedies at reasonable capital and operating cost.

Paul B. Hoffey

Principal Environmental Scientist

Contact: | (720) 200-3150 | VCF Card
Education: The University of Iowa, B.S. in Physical Geography/Minor in Geology, 1984
Years of Experience: 32 years

Technical Specialties:

Mr. Hoffey has thirty-two years of environmental consulting experience in conducting environmental investigations in California and throughout the U.S. He has extensive experience in preparing Phase I ESAs consistent with the ASTM guidance and the U.S. EPA AAI rule to support property transactions, design and management of soil and groundwater investigation and remediation projects, performance of environmental audits of chemical use facilities, interpretation of geologic, hydrologic and chemical data, and coordination between clients and regulatory agencies to achieve site and facility closures.Mr. Hoffey manages the environmental due diligence program for a world-class electronics manufacturing firm.

Steve G. Miller, P.E.

Principal Engineer

Contact: | (650) 292-9100 x3101 | VCF Card
Education: South Dakota State University, B.S. in Agricultural Engineering, 1978
Years of Experience: 38 years

Technical Specialties:

Mr. Miller has thirty-eight years of experience, with twenty years working on projects located in Southern California. He manages complex projects requiring liaison with multiple parties and has been the lead contact with Federal, State and local regulatory agencies, including at sites with significant public participation. Mr. Miller’s experience covers a broad range of project types including, for example, facility closure including Resource Conservation and Recovery Act facility and tank closures, site assessment and development of remedial goals and plans for petroleum, VOCs, metals and other contaminant types, brownfields redevelopment, vapor intrusion assessment and mitigation at residential and commercial properties, technical consultation to support litigation and cost allocation actions as part of multi-party disputes, heavy industry site remediation, demolition and construction management, groundwater assessment and cleanup including in situ technologies and emerging chemicals, and risk-based cleanup. Mr. Miller has been retained to provide strategic technical and cost estimation consulting services to large corporations and investment firms considering acquisition or divestiture of contaminated properties. These efforts have ranged from fast-track big picture analyses to full Phase I and II assessments with detailed remedial cost estimates.

Michael J. Moes, P.E.

Principal Environmental/Chemical Engineer

Contact: | (303) 796-0535 | VCF Card
Education: University of Minnesota, B.S. in Chemical Engineering, 1987
Years of Experience: 29 years

Technical Specialties:

Mr. Moes is an environmental/chemical engineer with twenty-nine years of experience in environmental investigations and remedial actions, including site investigations, feasibility studies and treatability studies. His experience includes process design, engineering plans and specifications, construction management, operation and monitoring of remediation systems, vapor intrusion assessment and mitigation design, permitting for air and wastewater discharges, hazardous waste characterization, treatment and disposal, risk assessments and project management.  Mr. Moes is also experienced in the assessment and remediation of soil and groundwater containing petroleum hydrocarbons, chlorinated VOCs, pesticides, PCBs, metals, and other contaminants. Remedial action projects he has been responsible for include soil vapor extraction, in situ bioremediation, in situ chemical oxidation, groundwater extraction, dual-phase extraction, low temperature thermal desorption, excavation, and various air and wastewater treatment technologies.

Matthew P. Zucca, P.E., QISP/ToR

Principal Engineer

Contact: | (650) 292-9100 x3093 | VCF Card
Education: University of California, Davis, B.S. in Civil and Environmental Engineering, 1993
(Dual Specialization in Structural and Environmental Engineering)
Years of Experience: 23 years

Technical Specialties:

For over twenty years, Mr. Zucca has had lead roles for a wide range of stormwater projects, including litigation support for clients subject to citizen lawsuits und the Clean Water Act, compliance evaluations of large industrial facilities, design and construction management of stormwater treatment system.  Mr. Zucca has been program manager for over $100 million in capital improvement programs and has conducted engineering design, construction review, and operation and maintenance of varied treatment systems.  He is familiar with stormwater, drinking water, and wastewater discharge regulations and has, on behalf of clients, applied for and obtained numerous NPDES discharge permits.

Mr. Zucca is currently part of a fifteen-person team participating in the SWRCB’s Industrial General Permit Training Team, which is the group responsible for developing the training program for the newly created “Qualified Industrial Stormwater Practitioner” position under the SWRCB’s National Pollutant Discharge Elimination System General Permit for Stormwater Discharges associated Industrial Activities (IGP; SWRCB Order No. 2014-0057-DWQ).  Mr. Zucca also co-chairs the IGPTT’s subcommittee responsible for developing all of the content to be included in the QISP training program.  He has given numerous presentations regarding IGP to industry associations and lobbying groups to assist the regulated community in preparing for permit compliance.

John T. DeWitt, P.E.

Principal Engineer

Contact: | (650) 292-9100 x3055 | VCF Card
Education: Stanford University, M.S. in Civil Engineering (Environmental Engineering and Science), 1991
Stanford University, B.S. in Applied Earth Sciences, 1989
Years of Experience: 27 years

Technical Specialties:

Mr. DeWitt is an environmental engineer with over twenty-seven years of wide-ranging experience in water, wastewater, and hazardous waste projects for municipalities, government agencies, and private clients. His project experience includes facilities engineering, process design, groundwater and industrial wastewater treatment, and hazardous materials abatement. Mr. DeWitt has also held key roles on several engineering projects, including engineering design and design review.  He has provided construction observation services for soil and groundwater remediation and is experienced with construction management and contract administration. Mr. DeWitt also evaluates technologies as part of feasibility studies, preparing cost estimates, and designing remediation. Mr. DeWitt performs quality assurance and quality control for EKI.

Nelson Schlater, P.E.

Principal Civil Engineer

Contact: | (650) 292-9100 x3064 | VCF Card
Education: Kansas University, M.S. in Environmental Engineering, 1995
Stanford University, M.S. in Aerospace Engineering, 1986
Pennsylvania State University, B.S. in Aerospace Engineering, 1982
Years of Experience: 32 years

Technical Specialties:

Mr. Schlater has twenty-one years of municipal wastewater experience (eleven years of aerospace experience for a total of thirty-two years of engineering experience). He has managed projects ranging from planning to complex design and construction support. Mr. Schlater developed RFPs, scopes, budgets, schedules, and contracts. He has led multi-office project teams, managed subconsultants, and supervised staff and collaborated with owners and presented findings to Boards and stakeholders. He was the lead author of the equipment procurement chapter and co-authored the design chapter in the Water Environment Federation, Manual of Practice 36: Membrane Bioreactors.

David Umezaki, P.E.

Supervising Civil/Environmental Engineer

Contact: | (650) 292-9100 x3079 | VCF Card
Education: Stanford University, M.S. in Civil (Environmental) Engineering, 1995
Stanford University, B.S. in Civil Engineering, 1994
Years of Experience: 22 years

Technical Specialties:

Mr. Umezaki has performed water, wastewater, and recycled water program management services for a number of cities in Northern California.  In this role, he has managed several permitting, design, and construction efforts for major improvements to water and wastewater treatment plants.  As part of his program management efforts, he has prepared technical evaluations, interfaced with regulatory agencies, and managed the efforts of numerous consultant teams and stakeholders on behalf of the cities. For twenty-two years, Mr. Umezaki has held key roles on several engineering projects, including program management, engineering design and design review, construction review, and operation and maintenance of water, wastewater, and groundwater treatment systems.  He has provided construction observation services for soil and groundwater remediation and is experienced with construction management and contract administration.  Mr. Umezaki has prepared engineering documents for submittal to regulatory agencies such as the U.S. EPA and several California Regional Water Quality Control Boards.  Mr. Umezaki also evaluates technologies as part of feasibility studies, preparing cost estimates, and designs groundwater treatment systems.

Claudia A. Cuadrado, P.E.

Senior Environmental Engineer

Contact: | (650) 292-9100 x3053 | VCF Card
Education: Stanford University, M.S. in Environmental Engineering, 2004
Universidad Catolica de Chile, Master of Engineering Services, 2000
Universidad Catolica de Chile, Environmental Engineer, 2000
Universidad Catolica de Chile, Bachelor of Engineering Science, 1998
Years of Experience: 14 years

Technical Specialties:

Ms. Cuadrado has twelve years of environmental work experience at EKI.  Ms. Cuadrado’s experience includes site characterization and remediation projects, human health risk assessments, development of site-specific cleanup levels, air dispersion modeling, and data analysis.  Ms. Cuadrado has prepared documents such as Removal Action Workplans, Remedial Action Plans, remediation cost estimates, site investigation work plans, health and safety plans, human health risk assessments, sampling protocols, five year reviews, and provided data analysis using GIS and Microsoft Access.

Deepa Gandhi, P.E.

Senior Environmental Engineer

Contact: | (650) 292-9100 x3090 | VCF Card
Education: University of California at Davis, M.S., Civil and Environmental Engineering, 2001
Case Western Reserve University, Cleveland, Ohio, B.S., Civil Engineering,1999
Years of Experience: 17 years

Technical Specialties:

Ms. Gandhi is an environmental engineer with seventeen years of experience specializing in the design and implementation of innovative remediation technologies to address soil and groundwater contamination. Ms. Gandhi has managed projects over a wide range of sizes, including multiple-site client portfolios. She has particular expertise with in situ remedies involving bioremediation, permeable reactive barriers, and zero-valent iron for remediation of various compounds including chlorinated solvents, perchlorate, chromium, and petroleum hydrocarbons. Ms. Gandhi has developed closure strategies, management plans, and liability assessments for the purposes of project forecasting and strategic business decision-making using scale appropriate approaches—from formal decision-analysis models to complex spreadsheet-based forecasting tools to simple engineer’s estimates. Ms. Gandhi also has considerable experience with litigation-related projects, leading and serving on both consulting expert and testifying expert teams. Her practice is advanced through collaboration with leading researchers in the environmental science and engineering fields.

Marla J. Guttman, J.D.

Supervising Environmental Engineer/ Project Director

Contact: | (650) 292-9100 x3132 | VCF Card
Education: University of California, Hastings College of the Law, Juris Doctor, 2004
Stanford University, B.S. in Civil and Environmental Engineering, 1998
Years of Experience: 18 years

Technical Specialties:

For eighteen years, Ms. Guttman has held key roles on several site characterizations, environmental remediation, and land use projects, including site investigations, remedial actions, and feasibility studies.  Ms. Guttman’s experience also includes litigation support, environmental support for property and asset transactions, and Brownfields redevelopment projects.  Ms. Guttman has supported several major site characterization and remediation projects, interpreted chemical and hydrogeologic data, and managed field and sampling efforts for various clients, including private and governmental entities, chemical and semiconductor manufacturers, waste management companies, and former railroad facility owners.  Ms. Guttman’s experience includes analysis of large data sets of environmental quality data, review of regional groundwater contamination plumes, installation and management of treatment systems, and preparation of environmental reports.

Joy Su, P.E.

Supervising Environmental Engineer

Contact: | (650) 292-9100 x3129 | VCF Card
Education: Stanford University, M.S. in Civil and Environmental Engineering, 2000
Massachusetts Institute of Technology, B.S. in Environmental Engineering, 1999
Years of Experience: 17 years

Technical Specialties:

Ms. Su has over seventeen years of experience in planning, implementing, and managing site characterization and remediation projects.  Ms. Su has designed, coordinated and implemented field investigations, managed project budgets, evaluated field and multi-media analytical data, and prepared documents such as work plans, health and safety plans, status reports, remedial investigation reports, remedial action plans, remedial design and implementation plans, construction plans and specifications, and field programs for soil and groundwater remediation.

Logan Hansen, P.G.

Senior Geologist

Contact: | (650) 292-9100 x3059 | VCF Card
Education: California State University, San Francisco, B.S. in Geology, 1998
Years of Experience: 18 years

Technical Specialties:

Mr. Hansen has eighteen years of professional experience in planning, managing, and conducting scientific and technical investigations.  He has conducted numerous subsurface investigations of soil and groundwater contamination resulting from various chemicals including chlorinated solvents, polychlorinated biphenyls, petroleum hydrocarbons, agricultural pesticides, metals, and leaking underground storage tanks containing fuels and solvents.  He also performs construction observation services and contractor management for remediation projects.  Mr. Hansen is experienced with various methods of soil and groundwater characterization, sample collection, soil boring logging techniques, and preparing and interpreting geologic cross-sections.

Christopher S. Heppner, Ph.D., P.G.

Senior Hydrogeologist

Contact: | (650) 292-9100 x3075 | VCF Card
Education: Stanford University, Ph.D. in Hydrogeology, 2007
Brown University, B.S. in Geology/Biology, 1998
Years of Experience: 18 years

Technical Specialties:

Dr. Heppner has eighteen years of experience conducting hydrogeologic investigations in both applied and research settings.  His work has included aquifer test planning, performance, and analysis; basin safe yield and groundwater supply sufficiency assessments; groundwater flow and solute transport analytical and numerical modeling in support of hazardous waste site investigations and remedial action efficacy evaluations; watershed hydrologic response and sediment transport modeling; research into unsaturated flow and recharge processes in fractured rock; development and application of hydrologic models and data analysis tools; assessment of stream channel geomorphology; and collection of hydrologic field data in multiple environments.  Dr. Heppner has published articles in peer-reviewed journals related to recharge in fractured rock settings, watershed-scale hydrologic response simulation, and sediment transport modeling, and has presented at conferences on topics including basin sustainable yield estimation and salinity in shallow groundwater.

John Montgomery-Brown, Ph.D.

Senior Engineer/Chemist

Contact: | (650) 292-9100 x3143 | VCF Card
Education: Stanford University, Ph.D. in Environmental Engineering, 2007
Stanford University, M.S. in Environmental Engineering, 2000
Queen's University, B.S.E. in Engineering Chemistry, 1999
Years of Experience: 17 years

Technical Specialties:

Dr. Montgomery-Brown has a background in environmental engineering, environmental chemistry, and chemical engineering.  His work of over seventeen years includes the fate and transport of organic and inorganic chemicals in the environment, chemical fingerprinting analyses to evaluate contaminant sources, data mining and the statistical analysis of analytical data, risk assessments, in-situ bioremediation, ambient and indoor air monitoring, vapor intrusion assessments, and soil gas surveys.  He has studied the biotic and abiotic attenuation processes of trace organic contaminants and pharmaceuticals in both the field and laboratory, and gained experience in microbiology and a variety of analytical measurement techniques.

Jeff R. Shaw, P.G.

Associate Hydrogeologist

Contact: | (650) 292-9100 x3074 | VCF Card
Education: University of Arizona, M.Sc. in Hydrology, 1997
University of Idaho, B.Sc. in Geology, 1986
Years of Experience: 24 years

Technical Specialties:

Mr. Shaw has twenty-four years of experience in the fields of water-resource evaluation, environmental investigation and remediation, and mineral exploration and development.  Mr. Shaw’s experience includes planning and execution of water-resource and environmental investigations; water-supply and environmental well drilling, design, construction, development, and sampling; hydraulic pumping tests; numerical and analytical groundwater flow modeling; numerous techniques for subsurface characterization; statistical analysis and data quality control; GIS data processing and analysis; and Phase I environmental site assessments.

James Yoon, P.E.

Associate Environmental/Civil Engineer

Contact: | (310) 857-1600 | VCF Card
Education: California Institute of Technology, B.S. in Chemical Engineering, 2007
Years of Experience: 9 years

Technical Specialties:

For over nine years, Mr. Yoon has been providing engineering technical support for EKI’s projects in southern and northern California.  He designs remedial systems, collects samples and data as part of remediation system operations and site investigations, develops and runs simulation models, estimates remedial action costs, compiles investigation databases, assists with contractor selection and communications, and prepares technical reports.  In particular, Mr. Yoon works on engineering assessments of environmental data, evaluations of remedial technologies, prepares engineering cost estimates for site-specific applications of remedial actions at contaminated sites, writes technical specifications for construction plans, and implements remedial system designs.  His experience includes technical environmental issues associated with dry cleaning facilities, metals processing and plating shops, transit centers, former oilfields, horse racetracks, vehicle fueling and service stations, whitefront and grocery stores, meat processing facilities, sports arenas, and high-pressure natural gas lines.

Kathryn L. Wuelfing

Associate Environmental Scientist/Water Resources Planner

Contact: | 650-292-9100 x3127 | VCF Card
Education: University of California, Santa Barbara, Mast of Environmental Science and Management - Pollution Prevention and Remediation, Water Resources, 2006
Santa Clara University, B.S. in Environmental Science, Biology 2004
Years of Experience: 10 years

Technical Specialties:

Ms. Wuelfing has ten years of environmental consulting experience in environmental sciences and water resources.  Her work at EKI has included water resources planning; conservation program evaluation and modeling; development of spreadsheet-based and database tools for use by clients; predictive modeling of water use, sewer flows, and wastewater quality for municipal water agencies; and developing SB 610-compliant Water Supply Assessments.  In addition, Ms. Wuelfing has worked on a variety of hazardous waste contamination projects, including numerous Phase I ESA and Phase II environmental site investigations, implementation of soil, soil gas, groundwater, and indoor air investigations, and remediation of soil and groundwater pollution.  Ms. Wuelfing’s technical skills include design and management of relational databases, geo-spatial relational databases (ESRI ArcGIS tools), SQL programming, data visualization and statistical analysis.