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w"3"� �r :1 <br /> YPark <br /> En vi r n m e n t a, <br /> March 2, 1994 ' <br /> 5016J1 <br /> Ms. Jane Novotny <br /> Jones, Day, Reavis & Pogue <br /> 555 West Fifth <br /> Suite 4600 <br /> Los Angeles, CA 90013-1025 <br /> Re: Revised Proposal in Response to'San Joaquin County <br /> PHS/EHD 2128194 Letter and Cost Estimate to <br /> Implement County Required Work <br /> Diamond Lumber Company j <br /> 224 North Main Street <br /> Lodi, California t <br /> r <br /> Dear Ms. Novotny: <br /> Park Environmental Corporation (Park) is pleased to provide this revised proposal for the <br /> above referenced project. This proposal has been prepared per'your request and in response to <br /> the above referenced San Joaquin County letter. <br /> The PHS/EHD letter indicates that the soil.samples analyzed for lead during the monitoring well; <br /> installation during 1991 are not valid because the analyses were performed by a laboratory not <br /> California certified. <br /> Periodic BTEX(benzene, toluene, ethylbenzene and xylene) compounds have been detected in <br /> the quarterly groundwater samples from the three groundwater monitoring wells.: None of these, <br /> test results have exceeded drinking water standards. Lead however,has been sporadically <br /> reported in all three wells at concentrations exceeding drinking water standards. ; <br /> As a result of.the above findings, the PHS/EHD has requested that Diamond Lumber drill and <br /> sample a soil boring through the filled fuel tank pit, sampling at 15, 20, 253 30 and 35 feet below, y <br /> grade. Soil samples are to be analyzed by a California certified laboratory for BTEX, TPH and' <br /> total lead. Analyses shall be by methods listed in the Central Valley Regional Water Quality <br /> Control Board's Tri-Regional Board Staff Recommendations, Table 2. . <br /> In addition, we understand that PHS/EHD'has requested that Diamond Lumber conduct two <br /> more rounds of groundwater sampling. The second round of samples will be collected thirty <br /> days after collecting the first samples. The samples will be tested as described below. <br /> 5016J1 1 <br /> 1231 Favi is Street • Suite 7 -�l RoCkhr,CA 95677 TEL 91 6-784-7400 800-753.7401 FAX 916-78q-7496 - <br />