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' Wright bo <br /> Environmental <br /> Services, Inc. <br /> Construction • Engineering • Remediation u „ <br /> P„ (L, 96 <br /> August 18, 2000 <br /> M&M Automotive <br /> 60 E 10th Street <br /> Tracy, CA 95376 <br /> Project No 4070-QM <br /> Attention Mr Larry Mclean <br /> Re- Quarterly Monitoring Well Sampling Report <br /> 60 E. 10th Street, Tracy,CA <br /> Dear Mr Mclean, <br /> This report describes the monitonng well sampling at the above referenced site Wright Environmental Services, <br /> Inc (Wright) was retained to coordinate sampling and chemical analysis of the site monitoring wells Previous <br /> reports are on file with the County of San Joaquin Public Health Service, Environmental Health Division (PHS- <br /> EHD) regarding the removal of impacted soil discovered during underground fuel storage tank removal Three <br /> monitoring wells currently monitor the site, a replacement well has a pending schedule date <br /> Field Sampling Procedures <br /> Three monitoring wells were sampled on July 19, 2400 The sampler purged well volumes of groundwater from <br /> each well using a submersible electric purge pump (after a volume calculation was done for each well purge based <br /> upon initial water level measurements) Purge water was stored on-site in barrels Measurements of conductivity, <br /> PK and water temperature were obtained between each well volume, and rioted on the attached groundwater <br /> sampling information sheets Once the readings stabilized over two purge volumes, aquifer water was assumed to <br /> enter the well Each well was then allowed to recharge to about 80a/o of the initial water level prior to sample <br /> collection A new disposable bailer was used to obtain each well groundwater sample <br /> Each sample was carefully poured into laboratory prepared containers leaving no headspace, capped, labeled, <br /> logged onto chain-of custody forms and immediately placed on crushed ice for shipment to Chromalab Inc in <br /> Pleasanton, California (a State Certified Testing Lab) Table i presents the groundwater monitoring well water <br /> level data <br /> • <br /> 67 E 10th Street • Tracy, CA 95376 <br /> 209 833 0758 • Fax 209 832 5152 <br /> wnght@inreach com Lic #651501 A-B HazMat �4M <br /> websu http//home inreach com/wright <br />