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Table 2-1. Well Construction and Soil Sampling Summary for the California <br />' Fuels Cardlock Station Located 2402 Pacific Avenue, in Stockton, CA. <br /> Location Well No Estimated Geologic Estimated Estimated <br /> Total Depth Units Screened Depth to <br />' Monitored Interval Water <br /> Adjacent to MWA 75 feet medium- 55 to 75 feet 65 feet <br /> the 10,000 grained <br /> gallon diesel alluv ium and <br /> fuel tank clay <br /> Adjacent to MW-2 75 feet medium- 55 to 75 feet 65 feet <br /> the 10,000 grained <br /> gallon alluvium and <br /> regular clay <br /> I gasoline and <br /> unleaded <br /> gasoline <br /> I tanks <br /> Adjaccnt to IST'-3 75 feet medium 55 to 75 feet 65 feet <br /> the grained <br /> dispensing alluv ium and <br /> island clay <br /> 2.8 Groundwater Monitoring and Sampling <br /> Xtter development, the monitoring wells «ill be tested for the presence of free <br /> phase liquid hydrocarbons and the water levels will be measured Depth to oil and <br /> depth to water will be measured in the field using a Marinc Moisture Control <br /> interface probe or clear acrylic. bailer Wells without free product will then be� <br /> cv acuatcd of at least 3 well casing v olumcs and the water level will be allowed <br /> return to at least SO percent of its static level The purge water will be collcctcd in <br /> 55-gallon drums at the site until groundwater chemistry results are received for <br /> cv aluation of disposal requirements The turbidity of the purge water will be <br /> measured Purging equipment will be decontaminated as described above for well <br /> development equipment The groundwater samples will be collcctcd with a clean <br /> Teflon bailer The water samples will be placed in containers prepared by the <br /> analytical Iaboratory The samples will be stored in chilled ice chests in accordance ] <br /> with EP-k standards The samples will be transported to California Fuel's contract state <br /> f certified laboratory under formal chain-of-custody <br /> i <br /> Water IcNcls in the monitoring wells will be measured two times over period of 1 <br /> month to cv aluatc the groundwater gradient and floating liquid phase hydrocarbon <br /> thickness The water level measurements will be cv aluated to determine the <br /> horizontal groundwater gradient and flow direction <br /> i <br /> 1l <br /> r <br />