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1� <br /> F <br /> ust 5, 1583 AGS Job No. 36on-3 <br /> lowe Properties, Stockton, Ca ifornia <br /> ortable organic vapor analyzer (OVA) was used in tx7a field to <br /> evaluate semiquantitatively the relative levels of contamLnatirn <br /> in each sample. Tne readings obtained from each sample as-#-. <br /> presented on the boring logs. OVA readings from namplez collec�ed <br /> below the ground-water surface (65 feet) ranged from 0 to 38 parts <br /> per million (ppm) . The soil samplers collected above the ground- <br /> water surface produced readings ranging from 0 to 624 ppm. The <br /> highest reading was produced from a sample taken from boring <br /> B--2 (located in the inferred dQvngradient dir^ction from the tank <br /> pit) at 45 feet below grade. Soil samples collected from boring <br /> B-1 produced no response on the OVA. <br /> Samples collected for possible laboratory analyses were removed <br /> from the sampler and sealed with aluminum foil, plastic caps, and <br /> airtight tape. They were then labeled and placed in iced storage <br /> for transport to the analytical laboratory. Chain of Custody <br /> Records were initiated by the geologist and accompanied the <br /> samples to the laboratory. Copies of laboratory results and Chain <br /> of Custody records are included in Appendix A to this report. <br /> Monitoring well M14-1 was constructed in boring 3-2 with 2-inch <br /> inner-diameter, Schedule 40 polyvinyl chloride (PVC) casing after <br /> _ .------the original 8-inch-diameter--borinchemical-­ <br /> cements, <br /> _ g g-teas--drilled. .._..N,o chemical-_. <br /> cements, glues, or solvents were used in well construction. The <br /> b <br /> Applied GeoSYSIems <br />