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I � Wright DEC 200 ` Environmental Services, Inc.; Construction ♦ Engineering ♦ Remediarion f, � � , i L nes I • I J December 1, 2000 Project No 4070-QM M & M Automotive 60 E 10th Street Tracy, CA 95376 Attention Mr Larry McLean Re. Quarterly Monitoring Well Sampling Report 60 E 10th Street, Tracy, CA Dear Mr McLean, This report describes the monitoring well sampling at the above referenced site Wright Environmental Services, Inc (Wright) was retained to coordinate sampling and chemical analysis of the site monitoring • wells Previous reports are on file with the County of San Joaquin Public Health Service, Environmental Health Division (PHS-EHD) Field Sampling Procedures Three monitoring wells were sampled on October 19, 2000 The sampler purged well volumes of groundwater from each well using a submersible electric purge pump (after a volume calculation was done for each well purge based upon initial water level measurements) Purge water was stored on-site in barrels Measurements of conductivity, pH, and water temperature were obtained between each well volume, and noted on the attached groundwater sampling information sheets Once the readings stabilized over two purge volumes, which is interpreted as aquifer water entering the well Each well was then allowed to recharge to about 80% of the initial water level prior to sample collection A new disposable bailer was used to obtain each well groundwater sample Each sample was carefully poured into laboratory prepared containers leaving no headspace, capped, labeled, logged onto chain-of-custody forms and immediately placed on crushed ice for shipment to Chromalab Inc in Pleasanton, California (a State Certified Testing Lab) Table 1 presents the groundwater monitoring well water level data 67 E 10th Street ♦ Tracy,CA 95376 209 833 0758 ♦ Fax 209 832 5152 -right@rnreach com Lie #651501 A-B HazMat A websit http 11home rnreach com/wright Page 1 i�/