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h <br /> CRIINi <br /> ! <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 /> OrionP ersonnel 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/l). <br /> Method Compounds Detection Limit" <br /> EPA Total petroleum hydrocarbons <br /> Modified analyzed as gasoline 50 <br /> 8015 <br /> Aromatic hydrocarbons including <br /> benzene, toluene, and 0.3 <br /> eth (benzene <br /> EPA <br /> 8260 Total xylenes, 0.5 <br /> MTBE 1 <br /> CIL <br /> Detection limits may vary because,of matrix interference. <br /> J� S:\SFS\STOCKTON\LTR\LTR008.DOC 5/1/01 <br />