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March 18 2020 <br /> Page 3 <br /> field conditions and available time. <br /> Based on review of reports for a nearby site (GeoTracker ID T0607700064, Mobil <br /> Gas Station, 2132 East Mariposa Road), groundwater in the site vicinity is expected <br /> to flow to the northeast. The proposed boring locations will be placed along the <br /> northeastern and southwestern sides of the subject site, as shown on the attached <br /> site map (Figure 1). <br /> • Recover the soil cores in 1.5-inch-diameter acetate liners to be observed by the <br /> field geologist. Continuously log the encountered soil and note any visual sign of <br /> contamination or unusual odors in soil boring logs. <br /> • Field-screen the recovered soil cores for VOCs using a portable photo ionization <br /> detector (PID). <br /> • Collect soil samples from each boring at 5 ft intervals. The samples will be <br /> collected by cutting the interval of the soil core to be sampled and sealing each end <br /> with Teflon septa and plastic caps. Additional soil samples may be collected based <br /> on PID readings, unusual odors and/or visible contamination. <br /> • Collect two shallow soil samples using a hand auger from site areas where surface <br /> oil staining is observed. Additional shallow soil samples rfp1(])ay be collected based on <br /> field observations. / —4-e6-t_ <br /> • Collect one groundwater sample from each boring, assuming that sufficient <br /> groundwater is encountered. One duplicate sample will also be collected. <br /> • Sample containers will be provided by McCampbell Analytical, Inc (CDPH ELAP2 <br /> #1644) and will include 40-milliliter VOAs3 containing hydrochloric acid as a <br /> preservative, 250-milliliter plastic bottles containing nitric acid as a preservative and <br /> 1-liter amber glass jars. Groundwater samples analyzed for metals will be field <br /> filtered. Samples will be stored in an ice-filled cooler and transported to the lab <br /> following chain-of-custody procedures. <br /> • Submit selected soil and groundwater samples to McCampbell Analytical, Inc. <br /> to be analyzed. The analyses requested may include: <br /> o Multi-range TPH4 by 801513m. <br /> o VOCs by 8260B. <br /> o CAM 17 metals5 by 200.8/6020A. <br /> o PCBSS by 8082. <br /> o PNAs/PAHS7 by 8270C <br /> o LUFT 58 metals by 200.8/6020A. <br /> o Organochlorine (OC) Pesticides by 8081A. <br /> 3 California Department of Public Health Environmental Laboratory Accreditation Program <br /> Volatile organics analysis containers <br /> "Total petroleum hydrocarbons <br /> California Assessment Manual 17 metals(Sb,As,Ba,Be,Cd,Cr,Co,Cu,Pb,Me,Ni,Se,Ag,Ti,V,Zn,Hg) <br /> 6 Polychlorinated biphenyls <br /> 7 Polynudear aromatic hydrocarbons <br /> a Leaking Underground Fuel Tank 5 metals(Cd,Cr,Ni, Fib,Zn) <br /> SCS700.2-2327 East Mariposa Road <br />