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kq KLEINFELDER <br /> The direction and extent of the excavation was based on organic vapor readings, visual <br /> observations, surface obstructions and the limits of the excavation equipment The excavation <br /> was advanced to 21 feet in the northern portion of the site based on visual observations and OVA <br /> readings <br /> Eight confirmation soil samples were collected from the bottom and sidewalls of the excavation <br /> Soil samples were collected in clean brass tubes driven in to relatively undisturbed soil collected <br /> in the excavator bucket or with a hand auger <br /> Six of the eight confirmation samples selected for analysis were submitted under chain of <br /> custody to Clayton Environmental Laboratory Services in Pleasanton The samples were <br /> analyzed for the following constituents <br /> • TPH extractable b Modified <br /> y EPA Method 8015 <br /> 1 Benzene, Toluene, Ethylbenzene, and Xylenes (BTEX) by EPA Method <br /> 5030/8020 <br /> Three of the six samples were additionally analyzed by Clayton for the following <br /> • Volatile Organics by EPA Method 8260 <br />'� • Semi-Volatile Organics by EPA Method 8270 <br /> • Total Petroleum Hydrocarbons by EPA Method 418 1 <br /> • Total Petroleum Hydrocarbons Purgeable as Gasoline <br /> Two of the eight confirmation samples were collected from the excavation bottom on September <br /> 24, 1996 These two additional samples were submitted to Freidman & Bruya, Inc in Seattle for <br /> forensic petroleum hydrocarbon analysis <br /> The results of the Clayton and Freidman & Bruya analyses are presented on Table 1 and in <br /> Appendix B <br /> 3 3 SOIL DISPOSAL <br /> As the <br /> soil was removed from the excavation, it was loaded directly into truck/trailers and hauled <br /> to Forward Landfill in Stockton for disposal Forward is a Class II/III landfill and is approved to <br /> 23-482276-BOO/CR96S276 Page 5 of 11 October 17, 1996 <br /> Copyright 1996 Kiemfelder Inc <br />