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4th Quarter 1992 <br /> Groundwater Monitoring&Sampling Report <br /> Marital Deduction Trust, Stockton, CA <br /> Page 2 <br /> Laboratory results determined that monitoring well MW1 contains very low levels of petroleum <br /> constituents Benzene and ethylbenzene were present at levels below the Primary Maximum <br /> Contaminant Levels (MCL), established by the California Regional Water Quality Control <br /> Board Monitoring well MW4 reported nondetectable levels for all requested analytes This is <br /> consistent with the previous quarter Laboratory results and chain-of-custody documentation are <br /> presented in Attachment 2 Table 2 summarizes laboratory results since August, 1990 <br /> Due to the nondetectable constituent concentrations in MW4, RESNA proposes to discharge the <br /> purge water from MW4 to the planter area onsite First quarter 1993 groundwater monitoring <br /> and sampling will be completed in early March 1993 Your office will be notified prior to any <br /> field activities If you have any questions or comments regarding this matter, please contact <br /> John Lane at (209) 838-3507. <br /> Respectfully, <br /> RESNA industries Inc <br />. Tom J Lutterman <br /> Staff Geologist <br /> ja—A-f_ <br /> o n P Lane <br /> o� t Manager <br /> Gregory P S 1 <br /> CA Registered Geologist No 5023 <br /> TJL/ggk <br /> Attachments <br /> cc John Dieckman, Trustee <br /> Elizabeth Thayer, CRWQCB, Central Valley Region <br /> OMA-0193 FNL <br />