Laserfiche WebLink
CAMBRlA <br /> equipment Boring and well specifications are described in <br /> Table 1 and the locations are shown on Figure 2 <br /> Sampling Methods: Cambria logged soils from the borings using the Unified Soil <br /> Classification System and Munsell Soil Color Charts Soil <br /> samples were collected at 5-foot intervals from the HAS borings <br /> and continuously from the Geoprobe borings for soil description, <br /> potential chemical analysis, and headspace analysis Soil <br /> samples were screened in the field for the presence of organic <br /> vapors using a photo-ionization detector (PID) The PID <br /> readings are recorded on the boring logs The boring logs are <br /> presented in Appendix B <br /> Boring Depths The well bonngs (MW-1 through MW-5) were drilled to a depth <br /> of approximately 35 feet below grade (fbg) "Borings B-1, B-4, <br /> B-5, and B-6 were advanced to approximately 30 fbg; and <br /> borings B-2, B-3, and B-7 were advanced to approximately <br /> fbg a J ver' <br /> Groundwater Depths Cambria observed first groundwater at depths ranging from <br /> approximately 16 to 28 fbg in the Geoprobe borings and at <br /> depths of 20 to 20 5 fbg in the well borings Blaine Tech <br /> Services, Inc (Blaine) of San Jose, California measured <br /> groundwater in wells MW-1 through MW-5 at depths ranging <br /> from 21 54 to 23 09 fbg on June 22,2004 Blaine's gauging <br /> data is included in Appendix C <br /> Soil Classification Soils encountered during drilling consisted of silt (ML), sand <br /> (SP and SW), silty sand (SM), and silty gravel (GM) at varying <br /> depths and thicknesses to the total depth explored of 35 fbg <br /> The silty gravel was encountered dust below the ground surface <br /> and is probably artificial fill used for grading the parking lot <br /> Sand and silty sand are the predominant soils beneath the site, <br /> with silt occurring in lesser amounts at various depths Soil <br /> types are recorded on the boring logs (Appendix B) <br /> Chemical Analyses• Selected soil samples and groundwater samples from the borings <br /> • and wells were analyzed for TPHg, BTEX, fuel oxygenates <br /> (MTBE, di-isopropyl ether, tertiary amyl methyl ether, ethyl <br /> 1660 3 <br />