REMOVAL_1999 - Laserfiche WebLink

Home Browse Search

C A M B R I A collected from the tank excavation bottom using a backhoe. The soil was removed from the backhoe bucket, packed into clean brass sample tubes, and tube ends were covered with Teflon tape and plastic end caps. Soil samples were labeled, placed into a cooler with ice, entered onto a Chain of Custody record, and transported to a California -certified analytical laboratory. All soil samples were analyzed for total purgeable petroleum hydrocarbons as gasoline (TPPH) by EPA Method 8015 (Modified), benzene, toluene, ethylbenzene, xylenes (BTEX), and methyl tertiary butyl ether (MTBE) by EPA Method 8020, and fuel oxygenates by EPA © Method 8260A. Selected soil samples were also analyzed for total lead by EPA Method 6010A. Dispenser and Product Piping Soil Sampling: Four product dispensers were removed and product piping in the dispenser areas was also removed prior to Cambria's arrival onsite. The remaining product piping was excavated and removed while Ms. Briggs and Cambria personnel were onsite. Soil samples from beneath the former product dispensers (DS -1 through DS -4) and piping (P-1 through P-4) were collected at locations specified by the SJCPHS. Four samples were collected from native soil beneath the four former product dispensers at approximate depths ranging from 4.0 to 5.0 fbg. Four soil samples were collected from native soil beneath the former product piping at approximate depths ranging from 3.5 to 5.0 fbg. Sample locations are shown on Plate 2. These soil samples were analyzed for TPPH, BTEX and MTBE, and fuel oxygenates. Selected samples were analyzed for lead. Soil Disposal: All excavated soil was stored onsite and covered with plastic sheeting. The soil stockpile was sampled and profiled for disposal. On May 21, 1999, Manley and Sons Trucking, Inc. of Sacramento, California transported approximately 689 tons of soil to Forward, Inc.'s Manteca, California landfill. ANALYTICAL RESULTS Tank excavation, dispenser island, and product line soil sample analytical results are summarized in Table 1 and presented on Plate 2. The certified analytical reports are included in Appendix A. A summary of these data is presented below. UST Excavation: Six samples were collected at 14.0 to 15.0 fbg in the tank excavation. Sample TS -D contained TPPH at a concentration of 4.59 parts per million (ppm). TPPH was not detected (ND) in the other tank pit samples. Benzene and MTBE were ND in all samples collected from the UST excavation. 201-1511 2