Laserfiche WebLink
4 - <br /> and pump, hose, and electrical leads were then rinsed withp otable water. At least 20 <br /> gallons or potable water was pumped through the pump and hose. The bailer and pump <br /> were then rinsed with distilled water. <br /> After purging, sampling of each well was conducted using new, clean, dedicated <br /> J <br /> disposable polyethylene bailers. Distilled water was poured into the bailer used for each <br /> well and a bailer blank was collected prior to well sampling. The bailers were then <br /> lowered into the wells via new dedicated poly cords, samples collected, and gently poured <br /> into two laboratory provided clean glass VOA vials. Each VOA vial was immediately <br /> sealed, checked for headspace, labeled with the date, time and location and placed in a <br /> cooler containing blue ice at 4° Celsius. <br /> The samples were transported under strict chain-of-custody protocol to GeoAnalytical <br /> Laboratories in Modesto, California for analysis. All samples were delivered to the <br /> analytical laboratory within four hours from their time of collection. Appendix A contains, <br /> analytical data and chain-of-custody forms. Table 2 summarizes the analytical results from <br /> r the monitoring well samples for the September 22, 1995 sampling event. Analytical <br /> results from previous sampling events are presented in Table 3. <br /> 5.0 GROUNDWATER ANALYTICAL RESULTS <br /> 5.1 Laboratory Analysis of Ground Water Samples <br /> All ground water samples were submitted to GeoAnalytical Laboratories of Modesto, <br /> California and were analyzed for the following constituents by the indicated methods: <br /> • Total Petroleum Hydrocarbons (TPH) - Gasoline, Method 5030/LUFT <br /> Detection limit 0.05 pg/L. <br /> • Benzene, Toluene, Ethyl benzene and Xylenes BTEX EPA Method 602 <br /> Detection limits 0.3 l.Lg/L BTE, and.0:6 µg/L X. <br /> The detection limits quoted above are the minimum reportable levels specified by the <br /> analytical laboratory. The presence of other hydrocarbons may raise the detection limits <br /> for particular constituents. Refer to the laboratory data sheets in Appendix A for sample <br /> specific detection limits. <br /> F <br /> American Geological Services,Inc. <br /> If � ' CA93DE-029 <br /> 5 <br /> Ili <br />