Landfill Technology Group

James Peck, P.E. Mr. Peck has over 30 years of experience as a civil engineer serving the solid waste industry regarding the design, permitting, and construction of environmental protection systems at solid waste facilities.  He serves on the Board of Directors of the Arizona Chapter of the Solid Waste Association of North America as the Legislative Liaison and Corporate Director.  He is the Project Manager and lead Design Engineer for landfill facilities in Cochise, Gila, Greenlee, and Yuma Counties in Arizona.  He is a licensed civil engineer in 8 states, including Arizona, California, Connecticut, Florida, Georgia, Louisiana, New Mexico, and Washington.

Stewart Smith, M.S. Mr. Smith joined Hydro Geo Chem, Inc. in 1989 as a Hydrogeologist. Mr. Smith performs numerical modeling of baro-pneumatic data for estimating landfill gas generation at landfill facilities as well as the performance of gas collection systems at the conceptual design level.



Warren Thompson, B.S. Mr. Thompson manages construction and installation of remedial systems for HGC's landfill projects. He has installed more than 10 large scale SVE systems with capabilities ranging from 50 to 2,000 scfm and 3 groundwater pump-and-treat systems used to remediate VOC contamination beneath landfills.




51 West Wetmore Road, Suite 101, Tucson, Arizona 85705-1678

Toll Free (800) 727-5547, Tel. (520) 293-1500, Fax (520) 293-1550, Email

3038 East Cactus Road, Suite 3, Phoenix, Arizona 85032-7113
(480) 421-1501, Fax (480) 425-8794
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