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<br />1 <br /> <br />Mark Sydnor <br />Site Assessment Experience <br />' Mr. Sydnor has extensive experience in subsurface investigations, remedia[ system design, <br />groundwater modeling, and remedial system design and installation supervision. He has been <br />involved in system implementation for phase-separated hydrocarbon recovery, dissolved-phase <br />' and sorbed-phase hydrocarbon recovery, and performed aquifer and vadose zone testing prior <br />to system design and implementation. Permits were obtained for groundwater remedial system <br />and vapor extraction systems. <br />Aquifer and vadose zone testing included aquifer pumping tests, slug tesu, soil air permeability <br />tesu, and vapor extraction effluent air testing. Computer models utilized included PLASM, <br />DREAM, VS2DT, and MODFLOW. Regulatory dealings include the California Regional Water <br />Quality Boazd (CRWQB), Texas Air Control Board, Texas Natural.Resources Conservation <br />Cotnmission, New Mexico Department of Environmental Quality, Louisiana Department of <br />' Environmental Quality, Arkansas Department of Pollution Control and Ecology, Idaho <br />Department of Environmental Quality, Ciry of Fort Worth Water Department Industrial Waste <br />Division, Ciry of Dallas Water Deparmtent, Texas Department of Transportation, Colorado <br />' Department of Public Health and the Environment, and the United States Environmental <br />Protection Agency. <br />' Ivlr. Sydnor has performed a number of site investigations involving the sampling for a variety <br />of constituents in differing matrices. He has extensive training and experience in sampling <br />' groundwater wells for volatile organic constituents, chlotinated hydrocarbons, soils sampling for <br />organics and metals analyses, and sampling of phase-separated constituents on groundwater. <br />This work has been performed at electric generation facilities, paint facilities, landfills, industrial <br />' sites, mines, and petroleum hydrocarbon sites. In addition, Mr. Sydnor has directed the drilling <br />and installation of over 100 monitor wells and participated in the subsequent sampling of the <br />boreholes and wells. Samples have been obtained by Shelby-tube, split-spoon, mud-rotary, and <br />' continuous core devices. These wells have been installed at petroleum hydrocabbon and various <br />other facilities. <br />' He is currently managing a RCRA site assessment and remediation project where constituents <br />of concern have included chlorinated solvents and petroleum hydrocarbons. This project <br />involved the design and implementation of groundwater pump and treat, groundwater air spa- <br />' rging, soil vapor extraction, ex-situ bioventing cells, and the characterization and disposal of <br />over 700 dntms and containers. <br />' He is also managing the design and implementation of a groundwater air spazging and <br />bioremediation system at a site involving phase-separated hydrocazbons up to eight feet thick. <br />The azea covered is greater than 120,000 square feet. A slurry wall will be installed adjacent <br />' to an open stream and wetlands area to mitigate further impacts to this sensitive environment. <br />~ ~~~ <br />' !!/95:SA <br />