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f TABLE 2 GROUNDWATER ANALYTICAL RESULTS Former Carando Machine Works Stockton,California Depth Ethyl- tert- Isopropyl- Boring Number (feet) Date TPH-g TPH-d MTBE Benzene Toluene benzene Xylenes Chloroform 1,2,4-TMB n-Butylbenzene Butylbenzene benzene Treadwell&Rollo Borings CS13-1 19 1/16/2004 <50 130 ndp <5.0 <0.50 <0.50 <0.50 <1.0 <1.0 <0.50 <1.0 <1.0 <0.50 CS13-2 19 1/16/2004 34,000 440,000 ndp <1000 <100 260 2,500 7,100 <200 540 <200 <200 140 CS13-3 20 1/20/2004 12,000 g 580 ndp <5.0 <0.50 <0.50 <0.50 <1.0 <1.0 23 4.7 1.8 7.1 CS13-4 19 1/16/2004 <50 290 ndp <5.0 <0.50 0.85 <0.50 1.5 6.0 0.79 <1.0 <1.0 <0.50 Groundwater Confirmation Sam le CPT-EXC-W 25 6/16/2004 16,000 2,700 LY <20 46 74 420 1,390 CPT-EXC-GW 25 4!20/2005 3,500 1,100 <1.0 <1.0 9.0 74 290 -- - -- Advanced GeoEnvironmental Borings B-1 - 6/27/2003 <50 <50 <5 <0.5 <0.5 <0.5 <0.6 - - -- B-2 - 6/27/2003 <50 <50 <5 <0.5 <0.5 <0.5 <0.6 -- - - -- B-3 - 6/27/2003 17,000 12,000 <5 <0.5 <0.5 1,300 2,090 B-4 6/27/2003 <50 <50 <5 <0.5 <0.5 <0.5 <0.6 - -- - -- B-6 6/27/2003 <50 -- <5 <0.5 <0.5 <0.5 <0.6 - -- -- B-7 -- 7/3/2003 <50 <50 <5 <0.5 j<0.5 <0.5 <0.6 -- - -- -- B-8 - 7/3/2003 <50 <50 <5 <0.5 <0.5 <0.5 <0.6 -- -- - - - Notes: --=not measured or not analyzed All results in micrograms per liter(µg/L). ndp=Hydrocarbon reported does not match the pattern of the laboratory's diesel standard. g=Hydrocarbon reported in the gasoline range does not match the laboratory's gasoline standard. 1,2,4-TMB=1,2,4-trimethylbenzene TPH-g=total petroleum hydrocarbons quantified in the gasoline range TPH-d=total petroleum hydrocarbons quantified in the diesel range NA-Not applicable LY-Lighter hydrocarbons contributed to the quantitation;Sample exhibits chromatographic pattern which does not resemble a standard 25971024-tables Page 1 of 1 June 2005