Laserfiche WebLink
4.0 BASELINE INVESTIGATION RESULT <br /> Subsurface soils and groundwater in Parcel III were tested for heavy metals, pesticides,petroleum <br /> hydrocarbons, volatile organic compounds, semi-volatile organic compounds, total sulphur, and sulfates. <br /> Groundwater was also tested for sulfides. <br /> 4.1 SUBSURFACE SOIL INVESTIGATION <br /> Subsurface soil in Parcel III was investigated in five hand auger borings (B-3 through B-7), and <br /> two borings drilled for monitoring well installations (MW-1 and MW-4) as illustrated in Figure 2, At <br /> 1 each of these locations, soil samples were collected from approximately 0.5 feet below the ground surface <br /> (bgs), and when conditions allowed, from the capillary fringe. <br /> y Boring B-3 was located near the approximate center of the location of the former copper <br /> concentrate stockpile. Soil samples were collected from depths of 0.5 and 13.5 feet below ground surface <br /> 1 (bgs) in this boring. Boring B-4 was located near the conveyor which extends to the dockside boom <br /> 7 tower, approximately 20 feet south of the bank of the channel. A single soil sample was collected from <br /> 0.5 feet bgs in this boring. Boring B-4 could not be advanced to the capillary fringe due to excessive <br /> caving of thick fill materials. Boring B-5 was located near the drop off point of the conveyor which <br /> adjoins the conveyor going to the dockside boom tower (Figure 2). A single soil sample was collected <br /> at 0.5 feet bgs in this boring. Refusal was met in boring B-5 at a maximum depth of 3.0 feet bgs. <br /> Boring B-6 was located near the west end of the drop off point of the conveyor which goes over the <br /> ' tracks from the commodities stockpile area (Figure 2). Soil samples were collected from depths of 0.5 <br /> and 8.0 feet bgs in this boring. Boring B-7 was located directly under the drop off point of the short <br /> conveyor on the south side of the tracks (Figure 2). Soil samples were collected from depths of 0.5 and <br /> 13.5 feet bgs in this boring. The samples were analyzed for: <br /> • CAM metals - STLC - EPA 6010; <br /> _i • Chlorinated Pesticides and PCBs - EPA 8080; <br /> • Organophosphate Pesticides - EPA 8140; and <br /> • Total Recoverable Petroleum Hydrocarbons (TRPH) - EPA 418.1. <br /> Monitoring wells MW-1 and MW-4 are both located south of the tracks in Parcel III (Figure 2). <br /> Soil samples were collected from depths of 0.5 and 10.0 feet bgs in both of the borings for these wells. <br /> SAC28.013 December 20, 1991 <br /> 8 <br />