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-� envirosD <br /> Task Five - Chemical Analyses <br /> Soil samples collected for chemical analysis will be analyzed for Total Purgeable Petroleum <br /> Hydrocarbons calculated as Gasoline (TPPH) according to EPA Method 8015 and <br /> benzene, toluene, ethylbenzene, and xylenes (BTEX) and MTBE according to EPA Method <br /> 8020. <br /> Ground water samples will be analyzed for TPPH,BTEX, and MTBE, and other <br /> oxygenates as requested by the Central Valley RWQCB according to EPA Method 8260. <br /> Task Six - Remediation Feasibility Testing <br /> A step-drawdown test and a constant-rate discharge pump test are proposed on recovery <br /> well RW-lA. Aquifer characteristics will be evaluated for remedial design. <br /> Ground water will be extracted from recovery well RW-1A, and water levels in <br /> surrounding monitoring wells will be evaluated to determine aquifer properties. <br /> This test will be performed after installation of the proposed wells has been completed. <br /> If you have any questions regarding the contents of this Revised Site Assessment Work <br /> Plan, please call Diane Lundquist at (707) 935-4852. <br /> Sincerely, <br /> Envilrooss, Inc. <br /> �V <br /> Joe Neely <br /> Project Geologis <br /> Diane M. Lundq t, P.E. No. 046725 <br /> Senior Engineer <br /> C46725 siryj ClV1l ��a <br /> f fiF edut�F <br /> Attachments <br /> Plate 1 Vicinity Map <br /> Plate 2 Extended Site Map/Proposed Well Locations <br /> cc: Mr. Alex Perez, Shell Oil Products Company <br /> Elizabeth Thayer, Regional Water Quality Control Board, Central Valley Region <br /> 96371 5 <br />