ARCHIVED REPORTS_2019 SOIL MGMT PLAN (MAY)

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Recommended Fill Material Sampling Schedule Area of Individual Borrow Area Sampling Requirements 2 acres or less 2 to 4 acres 4 to 10 acres Greater than 10 acres Volume of Borrow Area Stockpile Up to 1,000 cubic yards 1,000 to 5,000 cubic yards Greater than 5,000 cubic yards terials were used, handled or stored as part of the business operations, or unpaved parking areas where petroleum hydrocarbons could have been spilled or leaked into the soil. Undesirable commercial sites include former gasoline service stations, retail strip malls that contained dry cleaners or photographic processing facilities, paint stores, auto repair and/or painting facilities. Undesirable industrial facilities include metal processing shops, manufacturing fa- cilities, aerospace facilities, oil refineries, waste treat- ment plants, etc. Alternatives to using fill from con- struction sites include the use of fill material ob- tained from a commercial supplier of fill material or from soil pits in rural or suburban areas. How- ever, care should be taken to ensure that those ma- terials are also uncontaminated. Documentation and Analysis In order to minimize the potential of introducing contaminated fill material onto a site, it is necessary F37 Minimum of 4 samples Minimum of 1 sample every 1/2 acre Minimum of 8 samples Minimum of 8 locations with 4 subsamples per location Samples per Volume 1 sample per 250 cubic yards 4 samples for first 1000 cubic yards +1 sample per each additional 500 cubic yards 12 samples for first 5,000 cubic yards + 1 sample per each additional 1,000 cubic yards to verify through documentation that the fill source is appropriate and/or to have the fill material ana- lyzed for potential contaminants based on the loca- tion and history of the source area. Fill documenta- tion should include detailed information on the pre- vious use of the land from where the fill is taken, whether an environmental site assessment was per- formed and its findings, and the results of any test- ing performed. It is recommended that any such documentation should be signed by an appropri- ately licensed (CA -registered) individual. If such documentation is not available or is inadequate, samples of the fill material should be chemically ana- lyzed. Analysis of the fill material should be based on the source of the fill and knowledge of the prior land use. Detectable amounts of compounds of concern within the fill material should be evaluated for risk in accordance with the DTSC Preliminary Endan- germent Assessment (PEA) Guidance Manual. If