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1992 First Quarter Report ���nA <br /> Smith's Canal Pump Plant <br /> May 5, 1992 <br /> Page 2 <br /> Laboratory Analysis <br /> Collected samples were analyzed for benzene, toluene, ethylbenzene, xylenes (BTEX) and total <br /> petroleum hydrocarbons as diesel(TPHD)by state-certified RESNA Environmental Laboratories. <br /> Water samples were also analyzed for total coliform and fecal coliform bacteria at the City of <br /> Stockton's Municipal Utilities Department Laboratory. Analytical results are summarized in <br /> Table 2. Laboratory data sheets and chain-of-custody documentation are included in Attachment <br /> 2. <br /> Laboratory results indicate dissolved hydrocarbon constituents are not present at or above <br /> laboratory detection limits in wells MW I, MW2, and MW3, suggesting that the floating product <br /> is limited to a small area near the former tank. Coliform bacteria (total coliform) was detected <br /> in the irrigation well at 41 MPN/100 ml (most probable number of bacteria per one hundred <br /> milliliters of sample). The irrigation well is no longer being used by the City of Stockton. To <br /> prevent potential vertical migration of contaminants associated with the fermer diesel tank, the <br /> site irrigation well should be destroyed. <br /> RESNA will continue the quarterly monitoring program at the site. Any floating product <br /> -= 3 measured in monitoring wells will be bailed off and contained in DOT approved drums pending <br /> appropriate disposal. The next sampling event will be performed in June, 1992, and the <br /> subsequent report submitted in July, 1992. <br /> If you have any questions or comments, please contact John P. Lane at our Escalon office <br /> (209/838-3507). <br /> Respectfully, <br /> RESNA Industries <br /> Tom J. Lutterman <br /> Staff Geologist <br /> /L"� //), �7� <br /> Gregory P. Stahl <br /> CA Registered Geologist No. 5023 <br /> I <br /> Attachments <br /> pc: Mr. Jim Escobar, City of Stockton <br /> Mr. Jim Maughan, RWQCB <br /> e <br /> SCLRo592.TJL <br />