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FIELD NIETHODS AND PROCEDURES FIELD PROCEDURES The following section describes field procedures that were completed 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 were conducted according to guidelines established in a Site Health and Safety Plan (SHSP). The SHSP is a document describes the hazards that may be encountered in the field and specifies protective equipment, work procedures, and emergency information. A copy of the SHSP was at the site and available for reference by appropriate parties during work at the site. 2.0 DULLING AND S01EL SAMPLING Soil boring and sampling were performed under the direction of a qualified Delta representative. The soil borings were drilled using a truck-mounted rotary drilling rig and hollow-stem augers. The soil borings were drilled to approximately 50 to 60 feet below the ground surface. • Soil sampling was conducted in accordance with ASTM 1586-84 using a 2-inch inside-diameter California-type sampler driven into the soil by a 140-pound weight falling 30 inches. After an initial set of 6 inches, the number of blows required to drive the sampler an additional 12 inches, known as penetration resistance or the "N" value, is recorded. The "N" value is used as an empirical measure of the relative density of coliesionless soils and the consistency of cohesive soils. The sampler is lined with three brass sample tubes, each 6 inches long with the outside diameter equal to the inside diameter of the sampler. All soil samples were examined in the field by a geologist and described by color, grain size, moisture content and are classified in accordance with the Unified Soil Classification System. A portion of the soil sample was placed into a plastic bag and sealed for headspace analysis of the organic vapors using a photoionization detector (PID). The soil sample collected in the leading brass tube within the California-type sampler was labeled, sealed, and stored on ice pending sample selection and transport to the laboratory for analysis. Representative portions of the samples were retained for further examination and for verification of the field classification. Logs of the borings indicating the depth and identification i LRP381.SJH