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FIELD PROCEDURES <br /> The following section describes field procedures that were completed by Delta personnel in the performance of the tasks <br /> Olved with this project <br /> 1 HEALTH AND SAFETY <br /> Fieldwork performed by Delta and subcontractors at the site was conducted according to guidelines established in a Site <br /> Health and Safety Plan (SHSP). The SHSP is a document describes the hazards that may be encountered in the field and <br /> specifies protective equipment, work procedures, and emergency information. A copy of the SHSP was at the site and <br /> available for reference by appropriate parties during work at the site <br /> 0 SOIL B RING AND SIDEL SAMPLING PROTOC L <br /> Soil borings and soil sampling was performed under the supervision of a Delta geologist The soil borings were advanced <br /> using a truck-mounted hollow-stem auger drilling rig <br /> To reduce the chances of cross-contamination between boreholes, all downhole drilling equipment was steam-cleaned <br /> between each boring. To reduce cross-contamination between samples, the split-barrel sampler was washed in a soap <br /> solution and double-rinsed between each sampling event. <br /> 9 sampling was conducted in accordance P g co dance with ASTM 1586-$4 Using this procedure, a 2-inch diameter, slit-barrel <br /> sampler (California-type sampler) lined with three 2-inch by 6-inch long brass sample tubes 1s driven into the soil at <br /> approximately S,-foot intervals by a 140-pound weight falling 30 inches The number of blow counts required to advance <br /> the sample 18 inches was recorded at each sample interval <br /> Upon recovery, a portion of the soil sample was placed 1n a plastic bag and sealed for later screening with an hNu type <br /> photolonlzation detector (PID) Another portion of the soil sample was used for classification and description. One of <br /> the brass tubes was sealed and stored at approximately 4°C for transportW the laboratory After the soil samples, placed <br /> in a plastic bags, were allowed to warm, inducing volatilization of petroleum hydrocarbon vapors, the headspace vapors <br /> were screened with the organic vapor meter The highest observed readings were then recorded on the boring logs <br /> 3.0 GROUND WATER DEPTH DETERMINATION <br /> Depth to ground water was measured to the nearest 0 01 foot using an electronic hand held water level indicator The tip <br /> of the probe was examined to determine whether a product sheen was present <br /> LRP 135 HMB <br />