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iB1208 Environmental Management Inc 4th Qtr 2003 Groundwater Monitonng Report <br /> 002-70950-04 U-Haul#709-50 <br /> Appendix B Purge water was stored in a 1,000-gallon polyethylene tank located on the property, <br /> pending proper recycling and disposal <br /> 32 1 Groundwater Sam le Collection—December 2003 <br /> Following purging, groundwater samples were collected from both U-Haul's on-site and off-site <br /> Egroundwater wells using a new polyethylene disposable bailer for each well Prior to sample collection, <br /> the depth to groundwater was measured to confirm that the groundwater level had recovered to within <br />[ 90% of its original level The water level measurements, sample name, time, and container type were <br /> recorded on sample data sheets included in Appendix A Groundwater sampling procedures are <br /> described in Appendix B Groundwater samples collected from the site were contained in appropriate <br /> sample bottles supplied by Sequoia Analytical Following collection, the groundwater samples were <br /> placed on ice and transported, under proper chain-of-custody protocol, to Sequoia Analytical of <br /> ISacramento, California for analysis <br /> 1 <br /> 3 22 Groundwater Sample Analysis—December 2003 <br /> The groundwater samples collected during the December 2003 groundwater monitoring event were <br /> analyzed for Total Petroleum Hydrocarbons as diesel (TPHd), and Total Petroleum Hydrocarbons as <br /> gasoline (TPHg), using U S Environmental Protection Agency(EPA)Method 8015B The samples were <br /> also analyzed for Volatile Organic Compounds (VOC's) including benzene, toluene, ethylbenzene, and <br /> total xylenes (BTEX), methyl tert-butyl ether (MTBE), tert-butanol (TBA), di-isopropyl ether (DIPE), <br /> ethyl tent-butyl ether (ETBE), and tert-amyl methyl ether (TAME), 1,2-Dichloroethane (1,2 DCA), and <br /> 1 1,2 Dibromoethane (EDB) according to EPA Method 8260 <br /> 3 3 GROUNDWATER ANALYTICAL RESULTS—DECEMBER 2003 <br /> 1 Laboratory analytical results for the December 2003 groundwater sampling event, which included two <br /> sample groups (middle and lower casing samples), revealed substantial variation between the two <br /> groups A summary of the analytical results for the December 2003 sampling event is presented in <br /> Table 3 A copy of the corresponding laboratory analytical report and chain-of-custody documentation is <br /> provided in Appendix C <br /> r � 8 <br /> 1 <br />