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Triad Groundwater Associates <br /> HYDROGEOLOGISTS&GEOLOGISTS <br /> May 23, 1990 <br /> A1%E1 VE WL <br /> Mr. Greg Lyon (; Li <br /> San Joaquin County Public Health Services <br /> Environmental Health Division MAY 2 5 1g90 <br /> P.O. Box 2009 NVfRONMFNTAL HFA�TH <br /> Stockton, California 95201 PFR1MIT/SFRVjCES <br /> Subject: Quarterly Sampling <br /> Moore Petroleum Inc. <br /> 14800 W. Frontage Road <br /> Manteca, CA <br /> Triad Project No. 10-90-479 <br /> I <br /> Dear Mr. Lyon: j <br /> As we discussed in our phone conversation of May 22 , 1990 this <br /> letter is to inform you of Triad Groundwater Associateslj' (Triad) <br /> intention to sample all monitoring wells (MW-1 through MW �8) at the <br /> subject site on or before June 15, 1990. Ground water samples will <br /> be submitted to a California-certified laboratory to bell analyzed <br /> for ethylene dibromide (EDB) , 1, 2-dichloroethane (EDC) ,; ; benzene, <br /> toluene, ethylbenzene, xylene�EX) , and total :purgeable <br /> hydrocarbons (TPH) by EPA metho 825.4 . As you have suggested, the <br /> monitoring wells installed in 'an`uary, 1990 (MW-5 through MW-8) <br /> will be further developed prior to sampling. <br /> F <br /> Laboratory results will be available from this round of sampling <br /> approximately 12 working days following submittal of the samples. <br /> I anticipate that the Problem Assessment Report for this site can <br /> be submitted to your office no later than July 311, 1990. <br /> Recommendations for ground water remediation (if any) ) and the <br /> frequency of ground water monitoring at this site will be included <br /> in the Problem Assessment Report. <br /> If you have any questions, please give me a call. <br /> Sincerely, <br /> TRIAD GROUNDWATER ASSOCIATES <br /> Darrell L. Nations <br /> Principal Hydrogeologist <br /> DLN:dn <br /> CC,. Mr. Jerry Moore, Moore Petroleum, Inc. <br /> P.O. Box 1805 Cameron Park,California 95682 (91'6)676-5941 <br /> (9116)676-8018 FAX <br /> } <br />