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1 <br />' 26 December 2001 <br /> AGE-NC 1 Project No 97-0290 <br /> Page 2 of 8 <br /> After recording water level measurements, a dedicated disposable bailer was used to purge each <br />' monitoring well of standing water Approximately 6 to 8 gallons of water (a minimum of 3 casing- <br /> well water volumes) were removed from each well Ground water temperature, pH and conductivity <br />' were measured at regular intervals during purging using a Hydac water analyzer Field sheets and <br /> data are included in Appendix A Purged water was stored on-site in labeled, 55-gallon, DOT- <br /> approved drums <br />' On 23 April 2001 a ground water sample was collected from monitoring well MW-l in preparation <br /> for abandonment A dedicated disposal bailer was used to purge the monitoring well of standing <br /> I water Approximately 8 gallons of water (a minimum of 3 casing-well water volumes)were removed <br /> from the well Ground water parameters were not collected during purging Purged water was stored <br /> on-site in labeled, 55-gallon, DOT-approved drums <br /> 22 COLLECTION OF GROUND WATER SAMPLES <br />' Water samples were collected from each purged well using the dedicated disposable plastic bailers <br /> • Each water sample was transferred into both 40-m1 volatile organic analysis (VOA) vials containing <br /> 0 5 ml 18% hydrochloric acid as a sample preservative <br /> After collection, the samples were properly labeled, placed in a chilled container and transported <br />' under chain-of-custody to McCampbell Analytical Inc (MAI) of Pacheco, Califorma, a California <br /> Department of Health Service (DHS) - certified laboratory The 23 February 2001 samples were <br /> analyzed for <br /> • Total petroleum hydrocarbons as gasoline (TPH-g) in accordance with EPA Methods 8015 <br /> Modified and <br /> • Benzene, toluene, ethylbenzene and xylene (BTEX) in accordance with EPA Method 8020 <br />' The 23 April 2001 sample collected from well MW-1 was analyzed for <br /> • Total petroleum hydrocarbons as gasoline and diesel (TPH-g and TPH-d) in accordance with <br /> EPA Methods 8015 Modified, <br /> • Benzene, toluene, ethylbenzene and xylene (BTEX) in accordance with EPA Method 8020, <br /> and <br /> • Oxygenated compounds - di-isopropyl ether (DIPE), ethyl tertiary-butyl ether (ETBE), <br /> methyl tertiary butyl ether MTBE, tertiary-amyl methyl ether (TAME) and tertiary butanol <br /> (TBA), methanol, ethanol, ethylene dibromide (EDB) and 1,2-dichloroethane (1,2-DCA)in <br /> accordance with 8260 Modified <br /> I <br /> Advanced GeoEnvironmental,Inc <br />