ARCHIVED REPORTS_XR0008216 - Laserfiche WebLink

Home Browse Search

URS electrical conductivity,pH and turbidity) were monitored during purging, and purging was continued until the field parameters stabilized and a minimum of three casing volumes of groundwater had been removed Purging data were entered on Field Record of Water Sampling Forms (Appendix A) Before and after Purging each well, the submersible pump was decontaminated by steam cleaning, washing in an Alconox solution,rinsing with fresh water, and final rinsing with distilled water Purge and rinsate water were placed into a Baker tank located at the site The wastewater was removed and disposed of by ABCO Environmental and manifested as non-hazardous waste based on-site analytical data Laboratory-supplied sample containers and trip blanks were obtained from Kiff Analytical, LLC (Kiff) of Davis, California, prior to the sampling events Kiff is certified by the California Department of Health Services, Environmental Laboratory Accreditation Program (DHS-ELAP) Following purging, samples were collected from each well using disposable bailers, and transferred to the appropriate laboratory- supplied sample containers through an attachment that allows a controlled flow from the bailer Sample containers were then labeled and placed into an iced cooler for shipment to the analytical laboratory via overnight carrier A completed chain-of-custody (copies of which are included in Appendix A) accompanied each sample shipment LABORATORY ANALYSIS The groundwater samples were submitted for analysis according to the following methods Wells Analysis Method DMW-1 through DMW-9 Total Petroleum Hydrocarbons as Method 8015M Diesel(TPH-D) Chlorinated volatile organic EPA Method 8260B compounds(VOCs)and oxygenates r A field duplicate was collected at DMW-7 during each sampling round A trip blank included with the sample shipment was analyzed for chlorinated volatile organic compounds (VOCs) by EPA Method 8260B Kiff also performed routine laboratory quality assurance/quality control (QA/QC) analyses, including method blanks, and surrogate analyses Laboratory analytical reports for the groundwater samples and the associated QA/QC samples are included in Appendix B Data validation was performed by URS, consisting of a review of • Data completeness, . • Holding times, • Blanks, • System monitoring compounds (surrogates), • Laboratory control samples, • Matrix spike/matrix spike duplicates, and ' • Compound identification and quantification The results of the data validation are included in the Data Validation Summaries (Appendix B) The data validation found all results to be acceptable and useable for their intended purpose with the no limitations �, G UABIAFP\Quarteriy1Q40414Qo4AFP_revOl doc