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Report; Groundwater-quality Monitoring—January 20, 2003: 7500 West Eleventh Street, Tracy, CA, Page 9 <br /> 2.2.1 Disposal of Purge Water <br /> Purge water temporarily held in the 55-gallon drum used to manage it at the well <br /> locations was pumped into a 1,000-gal. storage tank located on the 7500 West Eleventh <br /> ,Street property. That water will be shipped to a permitted recycling facility for disposal <br /> r t when sufficient quantity has accumulated for that to be done economically following <br /> future rounds of groundwater sampling and analysis, <br /> r i 2.3 Recovery of Groundwater Samples from Monitoring Wells <br /> After purging, samples were recovered from each monitoring well (with the exception of <br /> Monitoring Well MW-7) using a disposable bailer. Water brought to the surface in the <br /> t` bailer was decanted so as to fill completely the clean glassware supplied by the <br /> laboratory. The sample vials and jars were then tightly closed, labeled for identification, <br /> entered into chain-of-custody control, packed on chemical ice and held in refrigerated <br /> storage until they were transported, within ten hours, to Severn Trent Laboratories' <br /> (STL) laboratory in Pleasanton, California for analysis. <br /> ] Note: In the case of Monitoring Well 12A, a second set of glassware, designated as <br /> Sample No. 12AS, was filled with the recovered groundwater so as to permit additional <br /> analyses of the water from that well should it be found to be necessary, as was in fact the <br /> case. See Section 2.4.2 for additional details. <br /> 2.4 Analyses of Groundwater Samples <br /> Each groundwater sample, with the exception of Sample No. 12AS, was analyzed at the <br /> laboratory for the following suite of analytes. <br /> Analyte Method of Anal <br /> Total Petroleum Hydrocarbons EPA Method 8015M <br /> (quantified as Diesel) <br /> Total Petroleum Hydrocarbons EPA Method 8260B <br /> (quantified as Gasoline) <br /> _.i <br /> Benzene EPA Method 8260B <br /> .i Toluene EPA Method 8260B <br /> Ethylbenzene EPA Method 8260B <br /> Total Xylene Isomers EPA Method 8260B <br /> tertiary-Butyl alcohol EPA Method 8260B <br /> lr. f• ., <br /> sic <br /> I� <br />