Perry Evans,

MS, PE, PG
Senior Soil Scientist

Mr. Evans earned his Bachelor of Science in Construction Engineering Technology in 1984 and his Master of Science in Soil Science in 1990 from Texas Tech University. He has earned Professional Engineering status in the following states: Professional Civil Engineer - NM #24986, TX #81399, CO #47460, OK #26087, LA #37991 and Professional Geoscientist certifications in LA (#567) and TX (#301).

Mr. Evans has extensive experience in project management of environmental and regulatory permitting projects (working with the TCEQ, the LDEQ and the US Army Corps of Engineers) and technical experience involving hydrogeologic characterization studies, groundwater modeling, aquifer testing, engineered remedial action plans, well logging, recovery well field design, injection well design, remediation system monitoring and operation, water quality assessments and regulatory permitting.

Mr. Evans has over 30 years of professional experience in construction, research, and environmental consulting. As an undergraduate, he worked as a technician in the soil physics department of the Texas A&M Agricultural Experiment Station in Lubbock, where he conducted field experiments investigating soil-water plant relationships, including infiltration, evaporation, crop and turfgrass water usage, and irrigation efficiency. Mr. Evans has experience as the lead engineer/hydrogeologist in responsible charge for a variety of environmental consulting and engineering projects.

Mr. Evans has coauthored four publications on playa lake infiltration. Since 1991 he has completed over 1,000 projects related to chemically impacted soils and groundwater, including impacts to drinking water wells in the Ogallala Aquifer and other State-designated major and minor aquifers. His project experience includes cost estimating, scheduling, field engineering, well/boring logging, development and sampling of groundwater monitoring wells, soil sample collection, waste classification and disposal, hydrogeologic characterizations, groundwater modeling, aquifer testing, remediation feasibility testing (pumping tests, slug tests, soil vapor extraction/air sparging tests, dual-phase extraction tests, enhanced natural attenuation studies), preparing groundwater monitoring and engineered corrective action plans, and designing and installing soil and groundwater remediation systems. Mr. Evans routinely uses computer software such as Microsoft Office Pro, Aquifer Test Pro, Adobe Acrobat Pro, and proprietary models for pumping well capture zone and drawdown prediction and determining risk-based cleanup goals.