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CRlIN' <br /> 2 Wash with non-phosphate detergent and water using a brush <br />' 3 Rinse with deionized water <br /> 4 Rinse again with deionized water <br /> I5 Air dry <br /> Documentation Procedures <br /> Orton personnel and subcontractors followed documentation procedures developed for <br /> site investigation work to (1) provide a record of the activities performed in the field and <br /> I (2) provide identification of samples and track their status in the field, during shipment, <br /> and at the laboratory <br /> Orion field personnel provided oversight of subcontractors on site to conduct water <br /> sampling and to record the field activities on a sampling log <br /> The information recorded on the well sampling log included measurements of <br /> temperature, pH, and specific conductivity, total volume purged, and measurements of <br /> r• groundwater and well depths <br /> Groundwater Analytical Program <br /> Groundwater samples were delivered by UPS to Positive Lab Service (Positive) of Los <br /> Angeles, California, a State-certified laboratory Groundwater samples were analyzed for <br /> the following compounds using U S Environmental Protection Agency (EPA) laboratory <br /> methods, in micrograms per kilogram (µg/l) <br /> Method Compounds Detection Limit' <br /> (Pg/1) <br /> EPA Total petroleum hydrocarbons <br /> Modified analyzed as gasoline 50 <br /> 8015 <br /> Aromatic hydrocarbons including <br /> benzene 0 5 <br /> EPA Total xylenes, toluene, and <br /> 8260 ethylbenzene 1 <br /> MTBE 1 <br /> IEPA 1,2-Dibromoethane 0 020 <br /> 5041 <br /> Detection limits may vary because of matrix interference <br /> 5\BFS\STOCKTON\LTR\LTR007 OOC 2/20/01 <br />