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Working To Restore Nature Groundwater Gradient On May 31,1994, prior to well development and sampling, depth to water readings were collected from each well and the wellheads were surveyed The survey data was tied to a common datum and a groundwater gradient map was created using a kriging program The gradient direction on May 31, 1994 was to the northeast ranging from 0 0015 to 0 0025 feet per foot Groundwater monitoring data is presented in Table 3 Appendix II contains Well ' Development/Purge Logs Analylical Results - Soil One soil sample was collected from each bonng/well, for analysis of BTEX and TPHg The samples were collected from the soil/groundwater interface, 59 feet below surface grade Petroleum hydrocarbon analytes were not present in the sample collected from well MW4 ' (MW4-59') or from MW5 (MW5-59') Soil analytical data is presented in Table 1 Analytical data sheets and chain of custody documentation are presented in Appendix III Analytical Results - Groundwater Petroleum hydrocarbon analytes were not present at or above method detection limits in the ' water samples collected from wells, MW4 and MW5 Groundwater analytical data in presented on Table 2 Appendix IV contains analytical data sheets and chain of custody documentation CONCLUSIONS/RECOMMENDATIONS The limits of groundwater and soil contamination have been defined at the site ' The concentrations of petroleum hydrocarbon analytes in the groundwater have decreased one order of magnitude since January 1993 This decrease may be attributable to natural ' biodegradation - M0411REPOR'f'SVSR-0694 FNL 9 1