Laserfiche WebLink
•' p <br /> C A M B R I A <br /> Boring Depths• Well borings MW-8 and MW-9 were drilled to 45 fbg <br /> Groundwater Depths• During drilling activities, groundwater was first encountered at <br /> 35 fbg in MW-8 and at 35 5 fbg in MW-9 Blaine Tech <br /> Services, Inc (Blaine) of San Jose, California measured <br /> groundwater in wells MWA through MW-11, and VEW-2 at <br /> depths ranging from 34 25 to 36 53 fbg on September 3, 2002 <br /> Blaine's well gauging data is included in Appendix C <br /> Soil Types. Soils encountered while drilling the bonngs consisted of varying <br /> of intervals silt (ML), sand (SP) and silty sand (SM) to the total <br /> explored depth of 45 fbg (Appendix B) <br /> Chemical Analyses• Selected soil and groundwater samples were analyzed for TPHg, <br /> benzene, toluene, ethylbenzene, xylenes (BTEX), and MTBE by <br /> EPA Method 8260B Additionally, groundwater samples were <br /> analyzed for di-isopropyl ether (DIPE), tertiary amyl methyl <br /> ether (TAME), ethyl tertiary butyl ether (ETBE), and tertiary <br /> butanol (TBA)by EPA Method 8260B <br /> Soil Disposal. Approximately 136 tons of soil were generated during field <br /> activities, temporarily stored onsite, and covered with plastic <br /> sheeting The soil stockpile was sampled and profiled for <br /> disposal (laboratory data in Appendix D) On <br /> September 11, 2002, Manley and Sons Trucking, Inc of <br /> Sacramento, California transported the soil to Allied Waste <br /> Industries' Forward Landfill in Manteca, California for disposal <br /> Well Materials. Wells MW-8 and MW-9 are constructed using two-inch <br /> diameter Schedule 40 PVC" rafting with a wreen slot size of <br /> 0 020-inch and#2112 Monterey sand <br /> Screened Interval. Wells MW-8 and MW-9 are screened from 25 to 45 fbg <br /> Monitoring well construction details are presented on Table 1 <br /> and on the exploiatoiy boring logs (Appendix B) <br /> • <br /> 0854 4 <br />