Expertise
SVE/Bioventing
Modeling
Mining Services
Landfill Services
Expert Witness Services
Water Rights Adjudication
Water Resources

Projects
Municipal Landfills
Tailings Seepage
CERCLA Feasibility Study
Desulfurization Ponds
City of Industry, CA
Earthen Cover Design
Hydroelectric Pump-Back
Trona Mine Dewatering
NPL Site Remediation
UST Petroleum Release
TMDL Analysis
Regional Aquifer Cleanup
In-Situ Remediation
Acid Mine Drainage
Groundwater Flow Simulation
Waste Water Handling
Water Resources Assessment
Water Rights Development
Water Supply Assessment

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Philosophy/Approach

Key Staff

Movies, Charts, & Presentations
Technical Papers
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Employment

Mr. Kuhn is an executive vice-president, CEO, and senior project manager of Hydro Geo Chem, Inc. and is in charge of remedial projects. He has over 24 years experience in environmental characterization and remediation. He has managed numerous soil and groundwater remedial projects including large-scale soil vapor extraction, groundwater sparging, groundwater pump and treat, and bioremediation systems for chemical manufacturing and petroleum handling facilities.
 
 

-M.S. (Hydrology) University of Arizona, Tucson, Arizona, 1983
-B.A. (Geology) University of South Florida, Tampa, Florida, 1980

Registrations/Certifications

Registered Remediation Specialist, Arizona Registration Number 46265
State of Arizona UST Qualified Consultant, Prequalification Number 1183
Qualifying Party, Arizona Commercial Contractors License, Class AE. Cleanup of Contaminated Groundwater and Soil, Number 114979

Representative Experience

• Senior consultant to City of Phoenix. Provides oversight and technical guidance to the city's interests in the 34th Street Honeywell site.

• Project manager for the Sky Harbor International Airport remediation project in Phoenix, Arizona. Includes feasibility studies, and full scale system design to treat approximately 750,000 gallons of Jet-A free product.

• Expert witness for various plaintive and defense environmental cases including landfill gas mitigation, toxic torts, UST sites, and surface water/groundwater issues.

• Project manager for a groundwater biosparging project for Shell Oil. Included design, construction, and operation of the remedial system for a petroleum hydrocarbon release that had impacted multiple properties.

• Project manager for several research and development projects for waste water and vapor extraction projects including direct UV photolysis of NDMA; autotrophic biodegradation of perchlorate; catalytic oxidation with reductant addition.

• Project manager assisting in the preparation of Spill Prevention Countermeasure Control (SPCC) Plans for Arizona Public Service. Modeled overload flow of mineral oil release to predict probabilities and volumes to discharge compliance locations.

• Project manager for a chlorinated hydrocarbon site for the Salt River Project in Phoenix. Performed SVE and sparging pilot test. Designed and constructed full-scale soil remediation system.

• Project manager of numerous site characterization investigations of soil and groundwater including PCBs, metals, semi-volatiles, volatile organics, and petroleum hydrocarbons. Investigation techniques encompass soil gas sampling and analysis, hydropunch surveys, on-site mobile lab analyses, surface and borehole geophysics, and drilling studies using both traditional and non-traditional methodologies. Investigations include waste pond evaluations for Pacific Power & Light in Wyoming, railroad emergency response in Philadelphia, landfill characterization for the City of Tucson, and manufacturing sites for Hexcel in northern California, American Cyanamid in Los Angeles and FMC corporation in Wyoming.

• Project manager of soil and groundwater remediation projects for heavy metals, petrochemicals, and chlorinated solvents. Remedial strategies include soil vapor extraction, groundwater pump and treat, and horizontal and vertical groundwater sparging. Sites encompass the Reese Air Force Base, City of Tucson Fuel Center, numerous superfund sites, the Coronado Naval Amphibious Base, and the Evergreen Air Center RCRA closure site.

• Project manager of bioremediation projects utilizing bioventing, groundwater sparging, oxygen release compounds, and natural attenuation for soil and groundwater containing halogenated or aromatic hydrocarbons. Clients include Union Pacific Railroad, Arizona Public Service, Hoechst Celanese, and Texaco.

• Construction and/or operation manager of soil remediation systems, groundwater treatment systems, and methane extraction systems for Texaco, United Technologies, Zero Corporation, and Cyprus Mining Corporation.

PROFESSIONAL PUBLICATIONS:

Bentley, Harold W., G.R. Walter, and M.W. Kuhn. 1985. Role of Numerical Modeling and Hydrogeology in Waste Site Assessment. In: Proceedings of the Edison Electric Institute Groundwater Workshop, New Orleans, Louisiana.

Hughes, L.J., D.F. Emer, M. W. Kuhn, H. W. Bentley, and R. M. Tinlin. 1986. Applications of Electrical Geophysics in Mapping Groundwater Contamination: Surface and Borehole. Sponsored by Geophysical Methods and Ground Water Instrumentation Conference and Exposition, Denver, Colorado.

Kuhn, Mark W., G.R. Walter, and H.W. Bentley. 1991. The Use of Soil Gas Surveys to Design Soil Vapor Extraction Systems. In: 4th Chemical Congress of North America. v. 31, no. 2. Sponsored by American Chemical Society, Division of Environmental Chemistry.

Kuhn, Mark W. In-house Seminar. South Coast Air Quality Management District. Invited Speaker to Present Vapor Extraction Equipment and Methods, Atmospheric Monitoring Techniques and Activated Carbon Air Emission Treatment Systems. January 1994.

Tang, J., G.R. Walter, and M.W. Kuhn. 1999. Field Pilot Study of Trench Air Sparging for Remediation of Petroleum Hydrocarbon in Groundwater. In-situ and On-site Bioremediation, International Symposium, San Diego, California.