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15 April 2006 <br /> AGE-NC Project No 95-0142 <br /> Page 2 of 5 <br /> analysis (VOA) vials containing 0 5 ml 18% hydrochloric acid as a preservative and I-liter amber <br /> bottles without preservative,and then labeled with the sample designation,date,time,and sampler's <br /> initials The labeled samples were logged on a chain of custody form, placed In a chilled container <br /> and transported to McCampbell Analytical,Inc (MAI), a California Department of Health Services <br /> (DHS)-certified laboratory for analysis <br /> The samples were analyzed for <br /> • Total petroleum hydrocarbons quantified as gasoline (TPH-g) In accordance with EPA <br /> Method 8015 Modified/TPH-diesel - effluent samples only- by EPA Method 8015C, <br /> • Benzene, toluene, ethylbenzene, and total xylenes (BTEX) by EPA Methods 8021B, <br /> • Fuel additives di-isopropyl ether(DIPS),ethyl tertiary-butyl ether(ETBE),MTBE (samples <br /> from 13 October only),tertiary-amyl methyl ether(TAME) and tertiary butanol (TBA),also <br /> in accordance with EPA Method 8260B, and <br /> • pH - effluent In accordance with EPA Method 4500H+B <br /> .! <br /> 2 1 2 METER CALIBRATION CERTIFICATION <br /> On 15 December 2005, the GasTech Lower Explosive Level (LEL) meter and the Blue-White <br /> Industries flow meter were calibrated/certified by Cooper Controls and Electrical Services of <br /> Acampo, California Reports of the calibration certification activities are included as Appendix E <br /> 2 2 GROUND WATER TREATMENT RESULTS <br /> Analytical results of influent ground water samples and ground water extraction measurements were <br /> used to evaluate the volume of Impacted ground water removed and mass of hydrocarbons treated <br /> The pump-and-treat system was operational during the fourth quarter 2005 and the first quarter 2006, <br /> except between 22 and 28 December 2005 (system off-line for process pump replacement), and <br /> between 15 and 21 March 2006 (EW-1 not pumping -pump/motor replacement) Utilizing a Blue- <br /> White Industries F-2000 flow meter, a total flow of 946,735 gallons (totalizer, or 3,583,392 liter) <br /> was recorded during the operational period between 13 September(1,537,531 g)2005 and 24 March <br /> 2006 (2,484,0868) (Table 1) Based on the discharged water recorded on the meter,AGE estimated <br /> that on an average approximately 4,931 gallons of water were discharged per day <br /> • <br /> Advanced GeoEnvironmental,Inc <br />