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• HE HYDROSERRCH, inc. <br /> February 23, 1996 A Tetra Tech Company <br /> C AMAIN\FMC\5042\SAMPM W.LTR <br /> Mr. Harlin Knoll FEB 26 M 10. 44 <br /> Environmental Health Specialist <br /> San Joaquin County <br /> P.O. Box 388 <br /> Stockton, CA 95201-0388 <br /> Subject: Work Plan for Sampling Monitor Wells at <br /> FranRica Manufacturing, Stockton CA <br /> Dear Mr. Knoll: <br /> Attached is the proposed workplan for sampling three groundwater monitor wells and <br /> one capped well at FranRica Manufacturing, 2807 & 2829 South Highway 99, <br /> Stockton, California. The work plan is designed to provide a higher level of <br /> confidence that groundwater at the site has not been impacted by total petroleum <br /> hydrocarbons as diesel (TPH-D). If no detectable TPH-D is present, Hydro-Search, Inc. <br /> (HSI) will apply to San Joaquin County for permission to abandon these wells. <br /> The proposed work includes sampling and analysis of three monitor wells (SS-MW-1 <br /> through -3) and the capped well shown in Figure 1, attached. The wells will be <br /> purged by removing a minimum of three casing volumes with a submersible pump. <br /> The samples will be collected with a new disposable bailer, placed in clean, laboratory- <br /> supplied bottles and transported in a chilled insulated container. The samples will be <br /> analyzed for TPH-D using EPA Method 8015, modified by NET, Inc., a state certified <br /> analytical laboratory. Chain of custody protocol will be maintained on all samples <br /> from collection to acceptance by the analytical laboratory. <br /> Because initial sampling results from these wells indicated no detectable <br /> concentrations of TPH-D, purge water generated from sampling will be discharged to <br /> the ground. <br /> A report describing field activities, analytical results and conclusions will be prepared <br /> by HSI and submitted to FMC and San Joaquin County Environmental Health Division <br /> within 90 days of receipt of analytical results. <br /> If you have any questions, please contact me at (916) 853-1800. <br /> Sincerely, <br /> HYDRO-SEARCH, INC. <br /> Ross D. Atkinson <br /> Hydrogeologist <br /> RDA/vap <br /> Attachment <br /> 3035 Prospect Park Drive,Suite 40,Rancho Cordova,California 95670 Telephone(916)853-1800 Facsimile(916)853-1860 <br />