Laserfiche WebLink
23 June 1998 <br /> AGE-NC Project No. 97-0349 <br /> Page 3 of 5 . <br /> 3.2. SOIL LOGGING _ <br /> Soil was extruded from the remaining brass sleeves and screened for the presence of organic vapor <br /> using an organic vapor analyzer (OVA) meter equipped with a photo-ionization detector (PID: <br /> Lot Thermo Environmental 580A,L 10.0 eV)calibrated to isobutylerie. The readings were recorded on the <br /> Boring Log. The soil was described in accordance with the Unified Soil Classification System. A <br /> vertical soil profile is depicted in Appendix A. <br /> two 3.3. GRAB GROUND WATER SAMPLE COLLECTION <br /> A grab ground water sample was collected from probe boring;IPB 1 at a depth of 65 feet bsg, using <br /> WW a Geoprobe water sampling assembly.Probe rods were extended into ground water,then pulled back <br /> to expose a water sampler screened interval. Ground water was'allowed to enter the sampler,and the <br /> sample was retrieved using a modified PVC tubing bailer. <br /> After sample retrieval, the sampler-was disassembled and cleaned. New PVC tubing was used for <br /> the sample. -The sample was collected into 40-m1 EPA-approved vials containing 0.5 ml 18% <br /> hydrochloric acid for sample preservation and 1-liter amber'bottle. The sample was placed in a <br /> chilled container under ice and transported under chain-of-custody to MAI for analysis. <br /> 3.4. LABORATORY ANALYSIS OF---SOIL AND GROUND WATER SAMPLES <br /> Uw <br /> Selected soil samples and the ground water sample were analyzed in accordance with EPA Method <br /> t 5030/8015-M for total petroleum hydrocarbons quantified as gasoline and diesel (TPH-g/d), and in <br /> accordance with EPA Method 8020/602 for volatile aromatics(benzene,toluene,ethyl benzene and <br /> xylenes: BTE&X) and methyl tertiary butyl_ether-(MTBE). The grab water sample collected from <br /> boring P 1 and the soil sample collected from P 1 at 20 feet bsg were-analyzed by EPA method 8260m <br /> .and 8240. <br /> tao 3.5. WELL SURVEY <br /> A well survey was conducted'to gather information regarding the location and use of municipal and <br /> domestic wells within 2,000 feet of the site. Well survey sources include California Water Service <br /> well survey, City of Stockton Well Survey and San Joaquin County Flood Control District and <br /> Water Conservation District(FCD&WCD). <br /> { <br /> taw <br /> Advanced GcoEnvironmental,Inc. <br /> fr <br />