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FIELD METHODS AND PROCEDURES The following section describes field procedures utilized by Delta personnel in the performance of the tasks involved with this project. 1.0 HEALTH AND SAFETY PLAN Fieldwork performed by Delta and subcontractors at the site was conducted according to guidelines established in a Site Health and Safety Plan (SHSP). The SHSP is a document designed to described the hazards that may be encountered in the field and specifies protective equipment, work procedures, and emergency information. A copy of the SHSP was reviewed and was available for reference by appropriate parties during work at the site. 2.0 LOCATING UNDERGROUND UTILITIES Prior to commencement of work on site, Delta researched the location of all underground utilities with the assistance of Underground Service Alert (USA). USA contacted the owners of the various utilities in the vicinity of the site to have the utility owners mark the locations of their underground utilities. Work associated with the boring and monitoring well installation was preceded by manual hand auguring to a minimum depth of 5 feet below grade to avoid contact with underground fuel distribution and vent lines and other unmarked utilities. 3.0 SOIL BORING AND SOIL SAMPLING PROTOCOL Drilling and soil sampling was performed under the supervision of a Delta geologist. The soil borings were advanced using a truck-mounted hollow-stem auger drilling rig. To reduce the chances of cross-contamination between boreholes, all downhole drilling equipment was steam-cleaned between each boring. To reduce cross-contamination between samples, the split-barrel sampler was washed in a soap solution and double-rinsed between each sampling event. Soil sampling was conducted using a 2.5-inch inside diameter, split-barrel sampler (California-type sampler) lined with three 2.5-inch by 5-inch long brass sample tubes. The sampler was driven into the soil at approximately 5-foot intervals by a 140-pound weight falling 30 inches. The number of blow counts required to advance the sample 18 inches was recorded at each sample interval. LRP 130.SJH