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.. . . .... .. <br /> I <br /> URS <br /> Purge and rinsate water were placed into a Baker tank located at the site. The wastewater was removed <br /> Fs•' <br /> and disposed of by ABCO Environmental and manifested as non-hazardous waste based on site analytical <br /> data. E <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 /> Department of Health Services, Environmental Laboratory Accreditation Program DHS-ELAP <br /> Following purging, samples were collected from each well using disposable bailers, and transferred to the <br /> appropriate laboratory-supplied sample containers through an attachment that allows a controlled flow <br /> from the bailer. Sample containers were then labeled and placed into an iced cooler for shipment to the <br /> analytical laboratory via overnight carrier. A completed chain-of-custody (copies of which are included <br /> in Appendix A) accompanied each sample shipment. <br /> LABORATORY ANALYSIS <br /> +- The groundwater samples were submitted for analysis according to the following methods: <br /> Wells Analysis Method <br /> Total Petroleum Hydrocarbons as <br /> =a DMW-1 through DMW-7 Diesel (TPH-D) Method$015M <br /> Chlorinated volatile organic compounds EPA Method 8260B <br /> 1:='d <br /> A field duplicate was collected at DMW-3, however instructions on the chain-of-custody were mis- <br /> interpreted by the analytical laboratory and the duplicate was not analyzed. A trip blank included with the <br /> sample shipment was analyzed for chlorinated volatile organic compounds (VOCs) by EPA Method <br /> 8260B. STL,Inc., also performed routine laboratory quality assurance/quality control(QA/QC) analyses, _ <br /> including method blanks, surrogate analyses, matrix spikes, and matrix spike duplicates. Laboratory <br /> =; analytical reports for the groundwater samples and the associated QA/QC samples are included in ` <br /> Appendix B. # <br /> ' Data validation was performed by URS, consisting of a review of: <br /> • Data completeness; <br /> Fa • Holding times; <br /> • Blanks; <br /> r' • System monitoring compounds (surrogates); <br /> • Laboratory control samples; <br /> • Matrix spike/matrix spike duplicates; and <br /> E_ Compound identification and quantification. <br /> The results of the data validation are included in the Data Validation Summary (Appendix B). The data <br /> validation found all results to be acceptable and useable for their intended purpose with the no limitations: <br /> :•sY <br /> -i <br /> K:1W PROCES%2273G12Q03AFP_REVO LDOC <br />