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' TABLE 2 CONCENTRATIONS (pg/L) OF DISSOLVED PETROLEUM <br /> HYDROCARBONS IN GROUNDWATER SAMPLES, <br /> FORMER EXXON RS 7-3942, STOCKTON, CALIFORNIA, <br /> 13 AUGUST 1992 <br />' Ethyl- <br /> Well No Benzene Toluene benzene Xylenes TPH-R <br />' MW 11 <0 5 <0 5 <0 5 <0 5 <50 <br />' M W 12 <0 5 <0 5 <0 5 <0 5 <50 <br /> RW 1 4,700 19,000 2,500 12,000 92,000 <br /> RW2 130 630 280 1,100 8,500 <br />' RW3 Not sampled — LPH <br /> RW4 8,500 24,000 2,500 13,000 120,000 <br /> PI 72 45 260 260 2,900 <br />' P2 45 12 100 76 2,100 <br /> VI 12,000 44,000 3,600 20,000 180,000 <br /> V2 28,000 49,000 5,600 28,000 220,000 <br />' V3 620 17,000 4,800 23,000 110,000 <br /> V4 Not sampled — LPH <br /> IW 1 19 37 50 70 650 <br /> Rinse blank <0 5 <0 5 <0 5 <0 5 <50 <br /> LPH = Liquid-phase hydrocarbons <br /> Note Wells MW 1-MW 10 did not contain enough water to sample <br /> 1 <br /> 73942(1)PQ492fMi <br />