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CRl ")N <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 />' 5 Air dry <br /> Documentation Procedures <br />' Orion 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 />' (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 /> 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/I) <br /> Method Compounds Detection Limit* <br /> g/I <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 /> EPA 1,2-Dibromoethane 0 020 <br /> .� 5041 <br /> * Detection limits may vary because of matrix interference <br /> 5\BFS\STOCKTON\LTR\LTR005 DOC 10/24/00 <br />