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LOW OFFICES <br /> GILC131RIST Sc RUTTER <br /> PROFESSIONAL CORPORATION <br /> Ms. Elizabeth A. Thayer <br /> October 18 , 1994 <br /> Page 2 <br /> by ChemRask, including, ultimately, the just-submitted Closure <br /> Report. <br /> 2 . Logs for borings B-11 B-12 SFW-1-1 SFW-2-1 and <br /> SFW-3-1 and wells MW-1 MW-2 and MW-3 . Those logs are, we <br /> understand, included in ERM-West' s March 1991 Final Site <br /> Assessment Report, which is enclosed. <br /> 3 . Quarterly ground water monitoring reports. The <br /> Closure Report by ChemRi.sk includes the data from quarterly <br /> groundwater monitoring by ERM-West on behalf of Santa Fe, through <br /> May 1993 when the last monitoring was done. We understand that <br /> Santa Fe did not continue monitoring after that time, so that <br /> more recent results are not now available. <br /> As we discussed, we would be most appreciative if you <br /> would let us know if the available information is sufficient for <br /> a favorable determination on the closure recommendation, or <br /> whether you would require current monitoring results. Naturally, <br /> • the parties would prefer not to incur the considerable expense of <br /> additional monitoring if it is unnecessary. Please let us know <br /> about that as soon as possible so that we can expedite any <br /> additional monitoring if needed. Thank you. <br /> 4 . Ground water data, including around water <br /> elevations and the ground water flow directions. Information in <br /> response to this request as included an the Closure Report (and <br /> some information along these lines is included in the earlier <br /> reports as well) . <br /> 5 . A Final Remediation Report. This is not applicable <br /> in view of the recommendation for closure of the site "as is. " <br /> As we discussed, some contaminated soil from the site of the <br /> excavation was apparently removed for disposal at the time of the <br /> tank pull in January 1988 (this is noted in the November 1989 <br /> report by ERM-West) . we understand that the remaining affected <br /> soil has been the subject of study and risk assessment since that <br /> time, culminating an the closure recommendation by San Joaquin <br /> County Public Health Services, Environmental Health Division, <br /> without further remedial action. <br /> 6 . Results of remediation. See item 5 above. <br /> 7 . A Closure Report complying with Appendix B of the <br /> Tri-Regional Recommendations. As noted above, ChemRisk has <br />• supplied such a Closure Report to you under separate cover. <br />