Laserfiche WebLink
01 April 2004 <br /> • AGE-NC Project No 02-0950 <br />' Page 2 of 9 <br />' and sealed with tape The sample sleeves were labeled,stored on Ice and transported under chain-of- <br /> custodyto Cal Tech Laboratories(CTL), a State of California Department ofHealth Services(DHS)- <br /> certified analytical laboratory <br /> The sampling equipment was washed in an Alconox solution and rinsed with water prior to each <br /> sampling run to minimize cross-contamination <br /> 212 Logging <br /> I Soil was extruded from a second brass sleeve and screened for theresence of organic vapor using <br /> P g p g <br /> an organic vapor meter (OVM) equipped with a photo-Ionization detector (PID Thermo <br />' Environmental 580A, 10 0 eV, calibrated to isobutylene), the OVM readings were recorded on the <br /> boring log The soil was then visually described in accordance with the Unified Soil Classification <br />' System (see Appendix B) <br />'• 2 13 Well Completions <br /> Pilot borings MW 1,MW2 and MW3 were completed as groundwater monitoring wells using 2-inch <br />' diameter PVC casing,with 0 020-inch slotted screen installed from approximately 14 feet to 34 feet <br /> bsg The filter pack(No 2112 Lonestar sand)was installed from approximately 12 feet to 34 feet bsg, <br /> and a nominal 2-foot bentonite chip plug was then installed above the filter pack and hydrated The <br /> wells were then grouted to near the surface with portland cement, and water-tight, traffic-rated well <br /> boxes were installed over the wells As-built well diagrams are depicted on the boring logs in <br /> Appendix B <br /> 2 1 4 Laboratory Analyses of Soil and Grab Ground Water Samples <br /> Selected soil samples were analyzed for <br /> • Total petroleum hydrocarbons quantified as gasoline and diesel (TPH-g and TPH-d) in <br /> accordance with EPA Method 8015 Modified, <br /> • Benzene, toluene, ethylbenzene and total xylenes (BTEX) and methyl tertiary-butyl ether <br /> (MTBE) in accordance with EPA Method 8021, <br /> • The fuel additives di-isopropyl ether (DIPE), ethyl tertiary-butyl ether (ETBE), MTBE, <br /> I tertiary-amyl methyl ether(TAME), tertiary butanol (TBA), 1,2-dichloroethane(1,2-DCA) <br /> and 1,2-dibromoethane (EDB) by EPA Method 8260 Modified, and <br /> Advanced GeoEnvironmental,Inc <br />