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. 09 May 2002 <br /> AGE-NC Project No 96-0232 <br /> Page 4of18 <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 afler filling and capping Ground <br /> water sample containers were labeled with a sample designation, date,time, and sampler's initials <br /> 3 3 LABORATORY ANALYSIS OF GROUND WATER PUMP AND TREAT SAMPLES <br /> Monthly influent and effluent grab water samples were logged on a cham-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 3550/5030/8015 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) and MTBE by EPA Method 8260 Modified, <br /> • Total lead (quarterly sampling frequency) by EPA Method 6010/200 7, <br /> • Nitrate as NO3 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 /> 3 4 INFLUENT MONITORING RESULTS <br /> In accordance with the requirements ofRWQCB Monitoring and Reporting Program No 5-00-119, <br /> monthly ground water pump-and-treat influent sampling was performed for TPH-g, TPH-d, <br /> TPH-mo, BTEX, MTBE, methanol, ethanol, DIPE, TAME, ETBE and TBA on 03 January, <br /> 04 February and 27 March 2002, in addition, total lead was analyzed for the March 2002 sampling <br /> . event <br /> Advanced Geo Environmental,Inc <br />