Laserfiche WebLink
k4KLEINFELDER <br /> 4.2 QUARTERLY GROUNDWATER SAMPLING <br /> Groundwater samples were collected from the previously noted seven monitoring wells. The <br /> wells were purged and sampled as described in Appendix A, Section A-4.2. The water purged <br /> J from the wells was contained and labeled and left on site within the fenced Disco Area. <br /> i <br /> After collection, the groundwater samples were labeled, logged on a chain-of-custody, and <br /> 1 immediately stored in an iced cooler. The samples were transported under chain-of-custody <br /> control by courier to Sequoia Analytical Laboratories (Sequoia) of Sacramento, California for <br /> chemical analysis. Sequoia is certified by the California Department of Health Services to <br /> perform the requested analyses. The groundwater samples were analyzed for the following: <br /> Total Petroleum Hydrocarbons-gasoline(TPH-g) by DHS LUFT; <br /> Benzene, Toluene, Ethylbenzene, Xylene (BTEX)by EPA Method 8015M/8021B; <br /> 0 1,2 DCA by EPA Method 8260B; <br /> • EDB by EPA Method 8260B; <br /> • TBA by EPA Method 8260B; and <br /> • Oxygenates, MTBE, D1PE, ETBE, TAME by EPA Method 8260B. <br /> The samples were analyzed on a regular laboratory turnaround schedule, requiring approximately <br /> 7 to 10 working days for receipt of analytical data. <br /> 12280.MONIST04R16101JZ:ly Page 8 of 13 <br /> 0 2004,Kleinfelder,Inc. December 10,2004 <br />