Laserfiche WebLink
TABLE 2 <br /> l.s. TOTAL RECOVERABLE PETROLEUM HYDROCARBONS IN SOIL <br /> EPA METHOD 418.1 <br /> r mg/Kg (Ppm) <br /> SAMPDE -: TRPH mg[Kg <br /> BORING DEPTH ID (Pptn) <br /> B-3 0.5' 133-0.5 140 <br /> �r B-3 13.5' 133-13.5 160 <br /> B-4 0.5' B4-0.5 190 <br /> B-5 0.5' 135-0.5 180 <br /> ff <br /> 0.5' 136-0.5 190 <br /> 8.0' B6-8.0 110 <br /> 0.5' B7-0.5 120 <br /> ! B-7 13.0' B7-13.0 130 <br /> f MW-1 0.5' MW-113/0.5 29 <br /> 6;.. MW-1 10.0' MW-IA/10.0 44 <br /> MW-4 10.0' MW-4B/10.0 33 <br /> As indicated in Table 2, detections of TRPH in Parcel III are not limited to the near surface soils. <br /> TRPH in relatively low concentrations was detected in all samples collected from the capillary fringe in <br /> ' Parcel III. However, TRPH was not detected above the detection limit of 20 ppm in a duplicate sample <br /> collected from the capillary fringe in MW-1 (MW-1B/10.0). There is currently no regulatory criteria for <br /> T TRPH in soil. Action levels for TRPH in soil are generally evaluated by the Leaking Underground Fuel <br /> Tank (LUFT) guidelines. The LUFT guidelines are specific for gasoline or diesel range hydrocarbons <br /> and take into account the nature of the soil, depth to groundwater, precipitation, and the presence or <br /> 1 absence of volatile organic compounds (VOCs). EPA Method 418.1 is a gross screening method for <br /> hydrocarbons and does not differentiate the type of hydrocarbons present. The concentrations of TRPH <br /> "j detected in Parcel III soils are generally low for the analytical method. <br /> J <br /> I <br /> SAC29.013 December20, 1991 <br /> 11 <br />