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1 <br /> 09 May 2003 <br /> • AGE-NC Project� ct No 96-0232 <br />' Page 3 of 16 <br />' treat system In addition, water samples were collected from the receiving water sampling stations <br /> located in the conveyance ditch approximately 50 feet upstream(R-1)and 80 feet downstream(R-2) <br /> of the point of discharge, R-1 and R-2 locations were approved by the RWQCB during a site <br />' inspection on 22 November 2000 <br /> The 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 /> 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 />' 2 3 LABORATORY ANALYSIS OF GROUND WATER PUMP AND TREAT SAMPLES <br /> The monthly influent and effluent grab water samples were logged on a chain-of-custody form, <br /> placed in a chilled container and transported to a California Department of Health Services(DHS)- <br /> certified laboratory for analysis for <br /> • Total petroleum hydrocarbons quantified as gasoline, diesel and motor oil (TPH-g, TPH-d <br /> and TPH-mo, respectively)by EPA Methods 3550/5030/8015 Modified, <br /> G Benzene, toluene, ethyl benzene and xylene (BTEX)by EPA Method 8020, <br /> G Methanol, ethanol, tertiary butanol (TBA), di-isopropyl ether(DIPE), ethyl tert butyl ether <br />' (ETBE),tert amyl methyl ether(TAME),methyl tert butyl ether(MTBE), 1,2-dichloroethane <br /> (1,2-DCA) and ethylene dibromide (EDB)by EPA Method 8260 Modified, <br /> • Total lead (quarterly sampling frequency, influent samples only) by EPA Method <br /> 6010/2007, <br /> o Nitrate as NO3 by EPA Method 353 3 (effluent samples only), and <br /> I • Aquatic toxicity (Bioassay) by EPA Method EPA 600/4-90/027F (quarterly sampling <br /> frequency, effluent samples only) <br /> Receiving water samples were logged on a chain of custody form,placed in a chilled container and <br /> 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 /> • <br /> Advanced GcoEnvironmental,Inc <br /> f <br />