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a 1 A S S O C I A T E S I N C i for seasonal water level fluctuations The screen slot size is 0 020-inch Well construction details are depicted on the well logs contained in Appendix A ' 2.4 Monitoring Well Development Groundwater monitoring wells MW 1, MW2, and MW3 were developed on August 14, 1998 Each well was purged until the extracted water was relatively sediment free Development/purge logs are included in Appendix C Purgewater was temporarily stored on site in 55-gallon drums After fluid levels had been allowed to stabilize, groundwater levels were obtained from wells MW1, MW2, and MW3 Fluid levels were taken on August 14, 1998, utilizing an electronic water probe capable of measuring with an accuracy of 1/100 of a foot Groundwater flowed to the southwest at 0 05 feet per feet Groundwater elevation data are presented in Table 2 ' 2_5 Groundwater Sampling and Analysis On August 14, 1998, groundwater samples were collected from wells MW1, MW2, and MW3 The samples were collected after purging a mnmmum of three well volumes and stabilization of ' electric conductivity, pH, and temperature Field development/purge logs are presented in Appendix C Subsequent to purging, groundwater was sampled and transferred to appropriate sample containers, using clean, disposable bailers with bottom emptying devices to reduce volatilization Sample containers were then labeled with sample identification, placed on ice, and shipped under chain-of-custody to Sequoia Analytical The groundwater samples from wells MW1, MW2, and MW3 were analyzed by Sequoia for TPHg, TPHd, BTEX, oxygenate fuel additives, EDB, DCA, and total lead Groundwater ' analytical results are summarized in Table 3, and laboratory data sheets are presented to Appendix D ' 3.0 SUBSURFACE CONDITIONS Lean clay with sand was encountered in soil boring MWl in the upper 11 5 to 15 feet of the soil ' column Soil from depths between 11 5 to 15 feet bgs and 16 5 to 20 feet bgs consisted of silty sand Soil from depths between 16 5 to 20 feet bgs and 29 feet bgs consisted of sand with gravel Lean clay with sand was encountered in soil borings MW2 and MW3 In the upper 6 5 to 10 feet of the soil column Soil from depths between 6 5 to 10 feet bgs and 11 5 to 15 feet bgs consisted of clayey sand in boring MW3 and silty sand in boring MW2 Soil from depths between 11 5 to 15 feet bgs to 28 feet bgs, the maximum depth explored, consisted of sand and gravel 4.0 ANALYTICAL RESULTS ' 4_1 Soil Analytical Results Soil samples collected from borings MW 1 and MW3 contained no detectable concentrations of BTEX, oxygenate fuel additives, EDB, DCA, or total lead TPHd was detected at a low W\62500-qe oAs\sunm doe 3