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V, Hazardous Waste Tank Closure Certification, and Sims Metal Management weight receipt and Certificate of Destruction are in Appendix C. 6, Non-impacted soil generated during the tank removal activities were placed back into the excavation up to the level of the Comcast fiber optic line conduit (Photo No. 4). The remainder of the tank excavation was backfilled with two-sack concrete sand slurry per Comcast's requirements. The L excavation backfill was completed with asphalt concrete cold patch (Photo No. 5). A copy of the completed SJCEHD Backfill Excavation Certificate is in Appendix D. Soil Conditions, Sampling and Analysis Soil conditions exposed in the tank excavation consisted of slightly moist, firm to stiff, silty clay with a petroleum odor. No soil staining or other field indicators of potential contamination were noted. A photoionization detector (PID) reading of the excavation bottom soil was 342arts Groundwater was not encountered in the tank excavation. P per million. �- Soil sample UST-7.25 was obtained approximately 2 feet beneath the bottom of the UST excavation using the backhoe bucket. Soil sample PIPE-3 was obtained beneath the suspected location of the interior former fuel dispenser location using a hand-auger. The soil samples were collected in new stainless steel tubes, sealed at both ends with Teflon, capped, labeled, and placed in a chilled cooler pending transport under chain-of-custody protocols to the laboratory. The approximate soil sample locations are depicted on Figure 2. r. The soil samples were delivered to ATL for analysis of gasoline-and diesel-range organics (GRO and DRO) following Environmental Protection Agency (EPA) Test Method 8015B, benzene, toluene, ` ethylbenzene and total xylenes (BTEX) by EPA Test Method 8021, fuel oxygenate compounds (FOCs) by EPA Test Method 8260B, and total lead by EPA Test Method 7420 in accordance with SJCEHD requirements for leaded gasoline fuel. ANALYTICAL RESULTS Petroleum hydrocarbon constituents were reported in UST removal soil sample UST-7.25 including GRO and DRO at 1,300 and 610 milligrams per kilogram(mg/kg), respectively. Toluene,ethylbenzene and total xylenes were detected in sample UST-7.25 at concentrations ranging from 6,900 to 66,000 micrograms per kilogram. Benzene and FOCs were not detected above the laboratory reporting limits for sample UST-7.25. The only petroleum hydrocarbon constituent reported in product piping soil sample PIPE-3 was DRO at a concentration of 3.3 mg/kg. This DRO concentration is consistent with naturally occurring organics as opposed to fuel contamination. Total lead was detected in soil samples UST-7.25 and PIPE-3 at respective concentrations of 34 and 88 mg/kg. ` A summary of the soil analytical data is presented on Table 1. Copies of the laboratory report and chain-of-custody documentation are in Appendix E. 6. Linden UST Removal Report,TO No.34 Caltrans Contract 06A1895,EA No. 10-0Y3600 Geocon Project No.59800-01-34 -3 - December 22,2014 b.