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TARS <br /> Mr.Jeffrey Wong <br /> San Joaquin Public Health Service <br /> Third Quarter 2003 Groundwater Monitoring Report <br /> June 11,2004 <br /> li-J Page 2 of 4 <br /> Forms (Appendix A). Before and after purging each well,the submersible pump was decontaminated by <br /> steam cleaning, washing in an Alconox solution, rinsing with fresh water, and final rinsing with distilled <br /> water. <br /> Purge and rinsate water were placed into a Baker tank located at the site. The wastewater was removed <br /> _ 3 and disposed of by ABCO Environmental and manifested as non-hazardous waste based on site <br /> analytical data. <br /> Laboratory supplied sample containers and trip blanks were obtained from Severn Trent Laboratories <br /> (STL), Inc., Sacramento, California, prior to the sampling events. STL is certified by the California <br /> i =1 Department of Health Services, Environmental Laboratory Accreditation Program (DHS-ELAP). <br /> :j Following purging, samples were collected from each well using disposable bailers, and transferred to <br /> the appropriate laboratory-supplied sample containers through an attachment that allows a controlled <br /> flow from the bailer. Sample containers were then labeled and placed into an iced cooler for shipment to <br /> the analytical laboratory via overnight carrier. A completed chain-of-custody (copies of which are <br /> included in Appendix A)accompanied each sample shipment. <br /> LABORATORY ANALYSIS <br /> rrThe groundwater samples were submitted for analysis according to the following methods: <br /> ',q <br /> Wells Analysis Method <br /> DMW-1 through DMW-7 Total Petroleum Hydrocarbons Method 8015M <br /> as Diesel (TPH-D) <br /> Chlorinated volatile organic EPA Method 8260B <br /> compounds (VOCs) and <br /> oxygenates <br /> I <br /> V r.3 <br /> A field duplicate was collected at DMW-7. A trip blank included with the sample shipment was analyzed <br /> for chlorinated volatile organic compounds (VOCs) by EPA Method 8260B. STL, Inc., also performed <br /> routine laboratory quality assurance/quality control (Q / C) analyses, including method blanks, and <br /> surrogate analyses. Laboratory analytical reports for the groundwater samples and the associated QAIQC <br /> samples are included in Appendix B. <br /> Data validation was performed by URS, consisting of a review of: <br /> _". data completeness; <br /> =� • holding times; <br /> 4-"� KAWprocess12273613Q03AFP_rcv03.doc <br />