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q � <br /> Wright <br /> JL Environmental <br /> Services, Inc. <br /> Construction ♦ Engineering ♦ Remediation <br /> 1 <br /> November 1, 1999 <br /> Project No 4100-QM <br /> M & M Automotive <br /> 60 E 10th Street <br /> Tracy, CA 95376 <br /> Attention Mr Larry McLean <br /> Re. Quarterly Monitoring Well Sampling Report <br /> 60 E. Wth Street, Tracy, CA <br /> Dear Mr Mclean, <br /> This report describes the monitoring well sampling at the above referenced site for the quarter ending <br /> June, 1999 Wright Environmental Services, Inc (Wright) was retained to coordinate sampling and <br /> chemical analysis of the site monitoring wells Previous reports are on file with the County of San <br /> Joaquin Public Health Service, Environmental Health Division (PHS-EHD) regarding the removal of <br /> impacted soil discovered during underground fuel storage tank removal Three monitoring wells <br /> currently monitor the site A response to the PHS EHD letter dated July 23, 1999 is included in this <br /> report <br /> Field Sampling Procedures <br /> Three monitoring wells were sampled on October 5, 1999 The sampler purged well volumes of <br /> groundwater from each well using a submersible electric purge pump (after a volume calculation was <br /> done for each well purge based upon initial water level measurements) Purge water was stored on-site <br /> in barrels Measurements of conductivity, pH, and water temperature were obtained between each well <br /> volume, and noted on the attached groundwater sampling information sheets Once the readings <br /> stabilized over two purge volumes, aquifer water was assumed to enter the well Each well was then <br /> allowed to recharge to about 80% of the initial water level prior to sample collection A new disposable <br /> bailer was used to obtain each well groundwater sample <br /> Each sample was carefully poured into laboratory prepared containers leaving no headspace, capped, <br /> labeled, logged onto chain-of-custody forms and immediately placed on crushed ice for shipment to <br /> Chromalab Inc in Pleasanton, California (a State Certified Testing Lab) Table 1 presents the <br /> groundwater monitoring well water level data <br /> 67 E 10th Street . Tracy, CA 95376 <br /> 209 833 0758 . Fax 209 832 5152 <br /> wrigntr�rnreach com Lic #6.11501 A-B HazVat 4M. <br /> webstt http//home inreach com/wrtght <br />