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m = <br /> . A S S O C I A T E S I N C <br /> its contents were observed ATC presumes that the drum was removed by vandals Previous <br /> laboratory analyses performed on collected product samples indicate the substance is non- <br /> hazardous in nature as defined by California Code of Regulation's, Title 22, Environmental <br /> Health Standards -Hazardous Waste <br /> During a September 1998 visit, ATC replaced the missing drum and resumed free product <br /> monitoring and removal The replacement drum was secured inside the on-site building to <br /> prevent further vandalism <br /> OTHER SITE ACTIVITIES <br /> Stored Purge Water- Samplinz, Analyses and Discharge <br /> On August 14, 1998, monitoring well purge water stored from previous site groundwater <br /> monitoring activities was transferred into an on-site 500-gallon Baker tank In accordance with <br /> the site wastewater discharge permit, ATC personal subsequently collected a groundwater grab <br /> sample from the tank <br /> • The water sample was placed on ice and transported under chain-of-custody protocol to Sequoia <br /> Analytical laboratory The Baker tank sample was analyzed for BTEX, TPHg, pH, total lead, <br /> biological oxygen demand (BOD), total suspended solids(TSS), and total dissolved solids (TDS) <br /> The results of the analyses indicate TPHg, BTEX, lead, BOD, and TSS were not detected above <br /> laboratory method detection limits TDS was detected at 1,300 parts per million Laboratory <br /> data sheets and Cham-of-custody documentation is included in Attachment 2 <br /> Stored purge water was discharged to the sanitary sewer under permit on September 11, 1998 <br /> Stored Soil Cuttings - Sampling and Analyses, r <br /> During the subsurface investigations conducted in February 1992, July 1994, February 1996, and <br /> February 1997 a total of eight 55-gallon drums and one 5-gallon container of soil cuttings were <br /> generated and stored on-site <br /> On September 11, 1998 ATC personal transferred the soil from the five gallon container to one <br /> of the eight drums of soil on site One 8 1 composite soil sample was collected from the drums <br /> and analyzed BTEX, TPHg, total lead, and metals (by TTLC method) <br /> Soil sample analytical results did not detect the presence of elevated levels of the analyzed <br /> constituents Laboratory data sheets and chain-of-custody documentation is included in <br /> . Attachment 2 <br /> 625811QUARTLWQR-1998 DOC 4 <br />