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s � <br /> Third Quarter Groundwater Momtonng Report �AKffA <br /> C M Weber Entespnsea,Stockton,California <br /> September 25, 1992 <br /> . Page 2 <br /> Laboratory analyses determined that petroleum hydrocarbons, above method detection limits, <br /> were present in all monitoring wells except MW-5 A general reduction in contaminant <br /> concentration since May is apparent, however. The only aromatics detected during this sampling <br /> round were 6 5 parts per billion (ppb) benzene and 5 3 ppb xylene in MW-1, and 15 ppb <br /> benzene in MW-3 Laboratory reports with chain-of-custody documents are presented in <br /> Attachment 2 Table 2 summarizes laboratory results since April 1991 <br /> If you have any questions regarding this protect, please contact me at our Escalon office (209) <br /> 838-3507 <br /> Respectfully, <br /> RESNA Industries Inc <br /> Gregory P Stahl <br /> CA Registered Geologist No 5023 <br /> TLP/ggk <br /> Attachments <br /> PC Beth Thayer - CA RWQCB <br /> Jeanne Zolezzi - Neumiller & Beardslee <br /> Gertrude Weber - C M Weber Enterprises, Inc <br /> QR092592FNL <br />