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30 January 2015 <br /> AGE Project No. 14-3154 <br /> Page 8 of 9 <br /> All field procedures will be overseen by an AGE representative working under the <br /> supervision of a California Professional Geologist. Procedures for collection and <br /> analysis of soil and water samples, equipment decontamination and sample handling <br /> are presented below. Photographs will be taken at each sampling location and at <br /> surrounding areas. The photos will verify information entered in the field logbook. Each <br /> photo taken will be written in the logbook with the approximate time, date, and location. <br /> 2.3. SOIL SAMPLING <br /> Soil samples will be collected from the soil column at the base of trenches which <br /> demonstrate waste in a proportion above a de minimus volume; soil sample collection <br /> will be determined based on the quantity of waste encountered in each trench. <br /> However, to fill any data gaps which were not fulfilled during the December 2014, soil <br /> sampling of soil will likely be required to ensure, reuse or backfill of the soil is <br /> practicable. <br /> Each soil sample will be collected with a metric soil sampling slide-hammer, loaded with <br /> a pre-cleaned steel sleeve. The ends of the sleeve will be sealed with a Teflon plastic <br /> and end caps taped over the ends of each sample sleeve. Samples are to be collected <br /> by an AGE representative. <br /> Appropriately sealed and labeled samples will be placed in a chilled container under ice <br /> and transported under chain-of-custody procedure to a CDPH-certified laboratory. Each <br /> sample sleeve will be labeled with trench designation, depth, time, date and sampler's <br /> initials. Soils encountered in the trenches will be visually classified by AGE personnel in <br /> accordance with the Unified Soil Classification System (USCS). Additionally, soil <br /> samples will be field-screened for presence of volatile organic compounds using an <br /> organic vapor meter (OVM), equipped with photo-ionization detector (PID) pre- <br /> calibrated to isobutylene. <br /> 2.4. LABORATORY ANALYSIS <br /> Selected soil samples will be analyzed by a CDPH-certified laboratory; the following <br /> constituents may be selectively analyzed based on field monitoring: <br /> • TPH-g, TPH-d, and TPH-o in accordance with EPA Method 8015 Modified; <br /> • VOCs, including chlorinated VOCs and BTEX compounds in accordance with <br /> EPA Method 826013; <br /> • PCBs in accordance with EPA Method 8082; <br /> • PNA, PAH or SVOCs in accordance with EPA Method 8270; and <br /> Advanced GeoEnvironmental Inc. <br />