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i Logging of Borings Soil samples are logged using the Urufied Soil Classification System Samples not selected for chemical analysis and the soil sampler shoe are extruded in the field for examination The texture, color, moisture, plasticity, and consistency of soil, the blow counts, and subjective evidence of hydrocarbons, such as sort staining, obvious product odor, and photoionization detector(or similar mstrument)readings are noted in the field on the Logs of Bonngs Sampling of Drill Cuttings Soil samples are collected from the stockpiled drill cuttings by driving a hand-operated percussion sampler fitted with a clean brass sleeve into the stockpiled soil The sleeve is removed from the sampler and promptly sealed with Teflon tape and plastic caps The sample is then labeled and placed in iced storage Chain of Custody Records are initiated by the geologist and accompany the samples to the analytical laboratory Pending the analytical results of the soil samples, Dillard Trucking of Byron California will arrange for disposal of the drill cuttings at an appropriate disposal facility Groundwater Monitoring Well Construction The groundwater monitoring wells will be constructed in the bonngs with thread-pointed, 4-inch-inner-diameter, Schedule 40 PVC casing No chemical cements, glues, or solvents are used in well construction The screened portion of the wells consists of factory- perforated casing with 0 020-inch-wide slots The annular space in the wells is packed with # 3 Lonestar sand to approximately 1 to 2 feet above the slotted interval A 3-foot thick bentonite plug is added above the sand pack to prevent the cement from entering the well pack The remaining annulus is backfilled to grade with a bentonite cement slurry Wells are protected with a traffic-rated, cast-aluminum utility box equipped with a PVC skirt The box has a watertight seal to protect against surface-water infiltration and must be opened with a special wrench. The design of this box discourages vandalism and reduces the possibility of accidental disturbance of the well Vapor Extraction Well Construction The vapor extraction well will be constructed in the borings with thread-jointed, 4-inch- inner-diameter, Schedule 40 PVC casing. No chemical cements, glues, or solvents are used in well construction The screened portion of the wells consists of factory-perforated casing with 0 10-inch-wide slots The annular space in the wells is packed with pea gravel to approximately 1 feet above the slotted interval A Moot thick bentonite plug is added SACW\PJ010805108051470IAN-941dms I A-2