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Soils proposed for delivery to Forward Landfill are subject to a thorough and rigorous <br /> review and evaluation process. The objective of this process is to determine (1) the <br /> suitability of the soil for delivery to Forward Landfill (i.e., is the soil a hazardous waste <br /> that the landfill should not accept?) and (2), the proper reporting category for the soil <br /> (i.e., Contaminated Soil or Clean Soil). Typically, the generator is responsible for <br /> sampling and analyzing the soil and submitting the description of the soil (the profile) to <br /> Forward Landfill personnel for review and evaluation. Once material is deemed <br /> acceptable at the facility, the generator is given manifests for each load of material that <br /> contain tracking codes so our system can track how much material came from a given <br /> project and ensure that only approved materials are delivered to the facility. <br /> Soil Definitions <br /> As mentioned above, Forward Landfill personnel will use three criteria to define soils <br /> accepted at landfill. These are: <br /> • LEA limits for Clean Soil Levels for Inorganics <br /> • Bay Area Air Quality Control Board(BAAQMD)Regulation 8,Rule 40 <br /> • Physical Characteristics <br /> We discuss each criterion in more detail below: <br /> LEA Clean Soil Levels for Inorganics <br /> Soil that could potentially contain inorganic contamination above background is <br /> evaluated by a two-tier system. Initially total concentrations are evaluated for <br /> concentrations that exceed ten times the Soluble Threshold Limit Concentrations (STLC) <br /> limits specified in state regulations. In the event that a particular constituent exceeds this <br /> concentration, an STLC test is performed on the samples to determine whether soluble <br /> concentrations exceed state hazardous waste thresholds. Material exceeding hazardous <br /> thresholds is not accepted at the facility. <br /> The soluble test data is then evaluated to determine whether concentrations of the various <br /> inorganics exceed LEA Clean Soil Levels for Inorganics. The LEA Clean Soil Levels for <br /> Inorganics are as follows: <br /> ■ Cadmium 0.05 <br /> ■ Chromium (VI) 0.5 <br /> ■ Copper 20 <br /> ■ Lead 1.5 <br /> ■ Mercury 0.02 <br /> ■ Nickel 1.0 <br /> ■ Zinc 200 <br /> ■ Aluminum 2 <br /> 2 <br />