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DEC? <br /> �B ghthople.fthlS.W.- <br /> up to 2 feet in length. Following retrieval of the soil from the sampler, the soil will be screened in <br /> the field for the presence of total volatile organic compounds (VOCs) using a photo-ionization <br /> detector (PID). Kleinfelder field staff, under the supervision of a State of California-registered <br /> Professional Geologist, will prepare a lithologic log of the soils encountered during the boring <br /> advancement. The PID readings obtained will be recorded in the field onto a log of the boring <br /> along with a visual description of the soil in accordance with Unified Soils Classification System <br /> (USCS) visual-manual methods described in ASTM International Designation D 2488. <br /> Following collection of each soil sample, the sample container(s) will be labeled with a sample <br /> identification number, project number, and date, and placed in an ice-filled chest until delivered <br /> for analysis to a State Environmental Laboratory Accreditation Program-accredited analytical <br /> laboratory. Sample handling and chain-of-custody procedures will be performed in accordance <br /> with United States Environmental Protection Agency (US EPA) SW-846 protocol. The collected <br /> soil samples will be analyzed for gasoline-range total petroleum hydrocarbons and the VOCs <br /> benzene, toluene, ethyl benzene, total xylenes, and methyl tertiary-butyl ether using US EPA <br /> Method 82606. <br /> Upon completion of sampling, the boring will be backfilled with soil cuttings and patched with <br /> concrete or asphalt cold-patch, as appropriate to match the existing surface. <br /> 3.3 EQUIPMENT DECONTAMINATION <br /> Sampling equipment will be cleaned prior to soil boring advancement and prior to collecting <br /> each sample by washing in a non-phosphate detergent (i.e., Liquinoe) and tap water solution, <br /> using a brush to dislodge soil, dirt, or other encrusted materials, and then double-rinsing the <br /> equipment in distilled water. <br /> 3.4 REPORTING <br /> Upon receipt and completion of our review of the analytical results, Kleinfelder will prepare a <br /> letter report summarizing the sampling methodology and presenting the analytical results. Our <br /> report will include a description of field methods and observations, a summary of the analytical <br /> results, and appropriate attachments to document the work completed. <br /> 131248/ST013R0287 Page 4 of 6 April 9,2013 <br /> Copyright 2013 Kleinfelder <br />