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W(C;'IR J�oiundhiew�,•5it, lfini�c. • oxygenates (VOCs) (Method 8260B), nitrate (method 300.1) and ammonia as nitrogen (Method 350.1). Samples B2, B4 and B6 were also analyzed for Arochlor polychlorinated biphenyls (PCBs) (Method 8082A). One partially-full 55-gallon drum of soil cuttings and one half-full 55-gallon drum of rinse water were generated during the investigation. The drums were properly labeled and stored onsite pending results of analyses and disposal. 2.1 Observations Because there were few permanent landmarks in the area of investigation, and no markings to indicate the future location of Yara's activities, WGR relied strongly on measurements obtained from the base map provided by Yara for boring placement. No railroad tracks were observed in the position shown on Figures 2 and 3; these may represent proposed tracks. Borings B 1 and B2 were placed 65 feet north of Building 312, to be near the property line, as per request of Yara. Due to the presence of stacks of rebar which blocked access, boring B3 had to be moved • approximately 25 feet east, and boring B6 had to be moved to the west side of Building 212B. The other borings did not have to be relocated. The ground surface at each boring location was asphalt. Subsurface materials beneath the asphalt consisted of fine silty sands to approximately 4 feet bgs. Between 4 and 5 feet bgs was a silty clay. From 5 to 7 feet bgs was a silty sand, and from 7 to 8 feet was a silty clay. Minor black staining was observed in borings B3 through B7, typically between 4 and 6 feet bgs. Moist soil indicative of groundwater was encountered in borings B3 through B6 at approximately 8 feet bgs. Although historical reports from 1996 had indicated the presence of transformers (possibly containing PCBs) on the north side of Building 312, no transformers were observed on site. 3.0 RESULTS The results of laboratory analyses indicated predominantly nondetectable results. The only analyte detected was TPH-d. TPH-d was detected in boring B4 at a concentration of 12 milligrams per • 773. PRI.02 Page 4 October 9, 2007