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' kq K L E I N F E L D E R <br /> 4 ACTIVITIES CONDUCTED <br /> Two groundwater-sampling events were conducted since the installation and initial groundwater <br /> sampling of monitoring well MW-1 conducted in June 2000 The third quarter 2000 and first <br /> quarter 2001 groundwater sampling events were conducted on October 19, 2000 and January 4, <br />' 2001, respectively That sampling, and subsequent analyses, is detailed in this report as follows <br /> 4.1 GROUNDWATER SAMPLING <br /> Water level measurement were made in monitoring well (MW-1) at the beginning of the two <br />' sampling rounds prior to purging and sampling the well The depth-to-water was measured in <br /> well MW-1 according to the protocol described in Appendix A, Section A-4 The depth-to-water <br /> measurements, at this time, will be utilized only to assess the approximate depth to groundwater, <br /> 1 since one well is not sufficient to assess groundwater flow and gradient The groundwater depth <br /> for MW-1, which was measured from the top of casing (approximately ground surface) was <br /> approximately 32 58 feet bgs in October 2000 and 33 03 feet bgs in January 2001 <br /> 1 <br /> During the two groundwater sampling events, groundwater was purged using a disposable bailer as <br /> generally described in Kleinfelder's field protocol described in Appendix A, Section A-4 2 <br /> The samples were analyzed for extractable hydrocarbons and the gasoline constituents benzene, <br /> toluene, ethylbenzene, and total xylenes (BTEX) during both sampling events The samples were <br /> ' also analyzed for purgeable hydrocarbons as referenced to gasoline during the January 2001 <br /> sampling event at the request of PHS/EHD As part of the closure process, oxygenates were also <br /> requested to be analyzed for during the next assessment phase for the project <br /> 4.2 SAMPLE HANDLING <br /> ' After collection, the water samples were labeled, logged on a chain-of-custody, and immediately <br /> stored in an iced cooler The samples were transported under chain-of-custody control to <br /> Kleinfelder's office and then transported by courier in a chilled Ice chest to Sequoia Analytical of <br /> Sacramento, California for chemical analysis Sequoia is certified by the California Department <br /> ' of Health Services to perform the requested analyses <br /> 1 <br /> ' 20-1417-16 E03/201 I R259 Page 6 of l 1 <br /> Copyright 2001 Kleinfelder Inc February 28 2001 <br />