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U . .—. <br /> i <br /> PES Environmental.Inc. <br /> Engineering is Envuonmenrai—Services <br /> # February 12, 1991 <br /> GE001A <br /> E <br /> Geweke Land Development and Marketing <br /> t� 1045 South Cherokee Lane <br /> Lodi, California 95240 <br /> Attention: Mr. Jeff Werner <br /> WORK PLAN <br /> GROUNDWATER CHARACTERIZATION ANIS RENtEDIATION PROGRAM <br /> 16 SOUTH CHE_'-OKEE LMNE <br /> C� <br /> LODI, CALIFORNU I <br /> Gentlemen: <br /> EA PES Environmental, Inc. (PES) is pleased to present this work plan to Geweke Land <br /> Development and Marketing (GLDM) for performing additional soil and groundwater <br /> investigations at the GLDM property located on 16 South Cherokee Lane in Lodi, California <br /> (Plate 1). This work plan is designed in part to satisfy the requests expressed in the January <br /> 15, 1991 California Regional Water Quality Control Board, Central Valley Region <br /> (RWQCB) letter to GLDM. PES believes that an effective interim groundwater extraction <br /> r and treatment system can not be designed until aquifer properties and groundwater chemistry <br /> are defined. Consequently, the design drawings for an interim groundwater remediation <br /> system are not included in this work plan. The preliminary design of an interim groundwater <br /> extraction, treatment, and disposal system will be submitted as soon as the proposed <br /> ' additional groundwater characterization work is completed. <br /> E <br /> l>l <br /> BACKGROUND � <br /> PES understands that Geweke Land Development and Marketing (GLDM) owns the property <br /> at 16 South Cherokee Le and that the property was formerly a Gas-N-Save service station. <br /> Lane <br /> Two 10,000 gallon and one 6,000 fuel storage tanks, and one 1.000 gallon waste oil tank <br /> were removed from the site in 1985. The locations of the former tanks are shown on Platz <br /> . 1. <br /> in 1985, the San Joaquin Environmental Health Department (SJEHD) required GLDM to <br /> perform a site investigation to assess subsurface conditions in the vicinity of the 1.000-gallon <br /> waste. oil tank. GLDM contracted with Meinfeider Associates (KA) to instali four <br /> montoring wells and to collect soil and groundwater samples for chemical analysis. Wells <br /> MW-1 through MW-4 were drilled to a depth of approximately 60 feet below ground surface <br /> i bgs) and were completed with approximately 20 feet of 2-inch diameter 0.0,20-slotted <br /> polvvinyi chloride(PVC) casing and approximateiv 4O feet of 2-inch diameter PVC blank <br /> I'' a,� . o.vcrr•Mv.vva <br /> P O.Box 1813• 100 Mom=Plaza•Novato.CA 94948 J415)898-3531 • FAX('115)898.2780 <br />