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1 <br />' 15 October 2002 <br /> • AGE-NC Project No 96-0232 <br />' Page 3 of 19 <br />' R-1 and R-2 locations were approved by the RWQCB during a site inspection on <br /> 22 November 2000 <br />' Grab water samples were collected from influent, effluent and receiving water locations utilizing <br /> 1-liter amber bottles and 1-gallon plastic dugs without a sample preservative and 40-m1 EPA- <br /> approved VOA vials containing 0 5 ml 18% hydrochloric acid as a sample preservative Care was <br /> t taken to ensure that visible air bubbles were not present in the vials after filling and capping Ground <br /> water sample containers were labeled with a sample designation, date, time, and sampler's initials <br />' <br /> 23 LABORATORY ANALYSIS OF GROUND WATER PUMP AND TREAT SAMPLES <br />' Monthly influent and effluent grab water samples were logged on a chain-of-custody form, placed <br /> in a chilled container and transported to a California Department of Health Services(DHS)-certified <br />' laboratory for analysis for <br /> • Total petroleum hydrocarbons quantified as gasoline, diesel and motor oil (TPH-g, TPH-d <br /> and motor oil, respectively) by EPA Methods 355015030/8015 Modified, <br /> • Benzene,toluene,ethyl benzene and xylene(BTEX)with methyl-tertiarybutyl ether(MTBE) <br /> by EPA Method 8020, <br /> • Methanol, ethanol, tertiary butanol (TBA), di-isopropyl ether (DIPE), ethyl tert butyl ether <br /> (ETBE),tert amyl methyl ether(TAME),MTBE, 1,2-dichloroethane(1,2-DCA)and ethylene <br />' dibromide (EDB) by EPA Method 8260 Modified, <br /> • Total lead (quarterly sampling frequency) by EPA Method 6010/200 7, <br />' • Nitrate as NO, by EPA Method 353 3 (effluent samples only), and <br /> • Aquatic toxicity (Bioassay) by EPA Method EPA 600/4-90/027F (quarterly sampling <br />' frequency, effluent samples only) <br /> Receiving water samples(Coldam ditch)were logged on a chain of custody form,placed in a chilled <br />' container and transported to a DHS-certified laboratory for analysis for <br /> • Total dissolved solids by EPA Method 160 1 (quarterly sampling frequency), and <br /> • Turbidity by EPA Method 180 1 <br /> I <br /> Advanced CeoEnvironmental,Inc <br />