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ANALYTIC RESULTS <br /> Groundwater samples from monitor well MW-4 for the February 22, 1993 event were <br />' analyzed for total petroleum hydrocarbons as gasoline (TPH-g) by modified EPA <br /> Method 8015, benzene, toluene, ethylbenzene and total xylenes (BTE?) by EPA <br /> Method 8020 and for organic lead by DHS Method ABI803 The analytic results for <br />' all sampling events including this round of sampling, are summarized in Table 2 <br /> Laboratory reports with quality assurance/quality control documents are included in <br /> Appendix C The chain-of-custody form is included as Appendix D <br /> I <br /> COMMENTS <br />' The groundwater flow direction for the February 22, 1993 sampling event was to the <br /> southwest, which is nearly opposite to that of the November, 1992 sampling event <br /> TPH-g concentrations were detected at levels of 29,000 ppb in MW-4 Benzene, <br />' toluene, ethyl benzene and total xylenes were found in MW-4 at concentrations of <br /> 6,6000 ppb, 5,900 ppb , 1,300 ppb and 2,600 ppb respectively Free product was <br /> measured in monitor wells MW-1, MW-2, and MW-6 at 0 24', 0 24' and 0 02' <br />' thickness, respectively <br /> DISTRIBUTION: <br /> Submission to the RWQCB and the local implementing agency should include a copy <br /> of this report (in its entirety) and a cover letter from the property owner/trustee agent <br />' Four copies of this report have been included for your files and for distribution to the <br /> following agencies <br />' Public Health Service/Environmental Health Division <br /> San Joaquin County <br /> 445 N San Joaquin Street <br /> I P O Box 2009 <br /> Stockton, CA 95201 <br />' Attn Ms Linda Turkatte <br />' Central Valley Region C <br /> Regional Water Quahty Control Board <br /> 3443 Routier Road, Suite A <br /> Sacramento, CA 95827-3098 <br />' Ann Ms Elizabeth Thayer <br /> I ' <br /> I <br />