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21 July 2015 <br /> AGE Project No. 14-3154 <br /> Page 9 of 15 <br /> casing volumes, a sample is collected following 80 percent recovery of groundwater <br /> within the well, or after a minimum of one hour, but within eight hours, of well <br /> evacuation. <br /> SAMPLE WITHDRAWAL <br /> Water samples are collected from each monitoring well using a disposable polyethylene <br /> bailer. Bailers are disposed of after a single use (sample) and require no <br /> decontaminating; plastic tubing used with the inertia pump is either dedicated to each <br /> well point or changed at each sampling event, thereby minimizing cross contamination <br /> due to sampling devices. Samples are drawn and collected in such a manner that <br /> agitation and exposure of the groundwater to the atmosphere is minimal. <br /> SAMPLE HANDLING <br /> Groundwater samples are collected into laboratory-supplied 40-ml volatile organic <br /> analysis (VOA) vials without preservative and, if appropriate, one-liter plastic or amber <br /> glass containers without a preservative; the samples are collected with no visible air <br /> bubbles present in the vials after filling and capping. Following collection, samples are <br /> appropriately labeled, placed on ice, and kept in a cooler until delivered to Cal Tech <br /> Environmental Laboratories (CTEL), and McCampbell Analytical Inc., both are a State <br /> of California Department of Public Health-certified analytical laboratory, for analysis. <br /> The samples are to be analyzed for chemicals listed in the CalRecycle requirements <br /> and listed in the LABORATORY ANALYSIS section. <br /> EQUIPMENT DECONTAMINATION AND WASTE MANAGEMENT <br /> Any non-disposable equipment used for sample collection is thoroughly rinsed with <br /> clean water after being washed with a solution of Alconox. Purge water generated <br /> during sampling activities was contained on-site in an appropriately labeled 55-gallon <br /> drum. <br /> BASEMENT INFILTRATED GROUNDWATER SAMPLING <br /> A grab water sample shall be collected from each sump within the basement and lower <br /> basement level of the furnace building, with a minimum of two samples from the <br /> southern sumps. The eastern sump is located approximately 15-18 feet bsg and below <br /> the exterior grade of the building and the lower basement sump is approximately 30 feet <br /> bsg. For collection of a sump groundwater sample a pre-cleaned one-liter polyethylene <br /> dipper or sampling cup will be utilized. <br /> Advanced Geo Environmental,Inc. <br />