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+� `,r <br /> Smith Environmental Site Safety Plan <br /> FACILITY BACKGROUND <br /> On October 15, 1986, two 500 gallon gasoline underground storage tanks (USTs) were <br /> removed from the site. During removal of the USTs, petroleum product was noted present <br /> in the southern UST excavation. Soil samples were collected from 2 feet below the bottom <br /> of the USTs, and petroleum constituents and lead were detected in the soil samples. <br /> WORK PLAN <br /> Task One: Three soil borings will be advanced to depths of approximately 30 feet using <br /> 8-inch O.D. hollow stem augers. A field geologist will be present to log all <br /> drill cuttings and soil samples. Descriptions of soil types encountered, sample <br /> collection intervals, and well construction details will be recorded. Soil <br /> samples will be collected at five foot intervals and one groundwater sample <br /> will be collected for laboratory analysis. <br /> All drill cuttings will be placed in 55-gallon drums approved for hazardous <br /> waste storage and stored on-site pending laboratory results. The borings will <br /> be completed as groundwater monitoring wells, constructed of PVC well <br /> screen and casing. <br /> Task Two: The tops of the new wellheads will be surveyed and tied together. Smith <br /> Environmental personnel will measure the depth to water in the wells and <br /> will develop the new wells until the produced water is relatively sediment <br /> free. Prior to the collection of groundwater samples, a minimum of three <br /> well volumes will be purged. Temperature, pH, water elevation, and electric <br /> conductivity will be measured and allowed to stabilize. Water samples will <br /> be collected using disposable bailers, one dedicated to each well. <br /> Groundwater samples collected from all monitoring wells will be submitted <br /> for laboratory analysis. Purge water will be stored in 55-gallon drums <br /> approved for hazardous liquid storage pending laboratory analysis. <br /> PAGE 2 <br />