Laserfiche WebLink
15 October 2002 <br /> • AGE-NC Project No 96-0232 <br />' Page 9 of 19 <br />' In addition, ground water samples were collected from municipal water wells CSA-1, CSA-2 by <br /> opening a valve from each water well outlet sample port and allowing each well pump to turn on and <br /> operate for a minimum of 15 minutes to purge the wells and then collecting the running water <br />' directly Into the sample containers <br />' 3 3 LABORATORY ANALYSIS OF GROUND WATER SAMPLES <br /> Each ground water sample was logged on a cham-of-custody form,placed in a chilled container and <br /> transported to a California Department of Health Services (DHS)-certified laboratory for analysis <br /> for <br />' • TPH-g and TPH-d by EPA Methods 5030B/8015C Modified and 3510C/8015C Modified, <br /> respectively, and <br />' • MTBE by EPA Method 8260 Modified <br /> lie In addition, ground water samples collected from CSA-1 and CSA-2 were analyzed for <br /> TPH-mo by EPA Method 3510C/8015C, and <br /> O Methanol, ethanol, 1,2-DCA, EDB, TAME, DIPE, ETBE, TBA, by EPA Method 8260 <br /> Modified <br /> 34 FINDINGS <br />' Ground water elevation, flow direction and gradient were determined from field data collected on <br /> 04 September 2002, the contaminant Impact to ground water was quantified by laboratory analysis <br /> of water samples collected on 05 and 06 September 2002 <br />' 3 4 1 Ground Water Elevation and Gradient <br /> The depths to ground water were measured at between 15 62 feet (MW-10E) and 20 52 feet <br /> (MW-9A)below the tops of the well casings on 04 September 2002, <br /> Ground water elevations were calculated to be between 7 34 feet (MW-10E) and 11 07 feet <br /> (MW-13B)below mean sea level (MSL) on 04 September 2002 Groundwater elevation at the site <br /> i <br /> I <br /> Advanced GeoEnvironmental,Inc <br />