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21 September 2005 <br /> AGE-NC Project No. 05-1282 <br /> Page 4 of 7 <br /> Soil samples were collected from the borings at discreet 5-foot intervals using the soil sampling <br /> assembly, loaded with four 6-inch brass sleeves. For each soil sample collected, both ends of the <br /> second or other selected sleeve were-covered with Teflon sheets,capped and sealed with tape. The <br /> samples were labeled with the soil probe boring location, depth, time, date, sampler's initials and <br /> placed in a chilled container. <br /> The remaining soil was field-screened for the presence of volatile organic compounds, using an <br /> organic vapor meter(OVM)equipped with photo-ionization detector(PID).Soils encountered in the <br /> borings were also visually classified by an AGE geologist in accordance with the Unified Soil <br /> Classification System(USCS). <br /> EQUIPMENT DECONTAMINATION/BORING ABANDONMENT <br /> Prior to sample collection,the Geoprobe soil sampling equipment was thoroughly rinsed with clean <br /> water after being washed with a solution of Alconox. <br /> Following soil sample collection, all probe boring locations were abandoned by backfilling with <br /> portland cement from total depth to surface grade. <br /> ANALYTICAL METHODS <br /> Soil samples were transported under chain of custody to Cal Tech Environmental Laboratories <br /> (CTEL),a California Department of Health Services(DHS)-certified laboratory. Selected samples <br /> were analyzed for one or more of the following constituents: <br /> • Total petroleum hydrocarbons quantified as gasoline; diesel, motor oil and hydraulic oil <br /> (TPH-g, TPH-d, TPH-mo and TPH-ho; aka TPH-all)by EPA Method 8015 Modified; <br /> • Benzene,toluene,ethylbenzene and xylenes(BTEX),and the.fuel additives methyl tertiary- <br /> butyl ether(MTBE),tertiary butanol(TBA),di-isopropyl ether(DIPE),ethyl tert-butyl ether <br /> (ETBE),tert-amyl methyl ether(TAME),ethylene dibromide(EDB)and 1,2-dichloroethane <br /> (1,2-DCA)in accordance with EPA Method 8260B; and <br /> • EPA Method 8260B Full Scan to analyze for isopropyl acetate, isopropyl alcohol, toluel, <br /> normal-propyl acetate, acetone and blanket wash or waste ink residuals. <br /> Advanced GeoEnvironmental,Inc <br />