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TABLE 4 <br /> GROUNDWATER ANALYTICAL RESULTS(TPH and BTEX)""' <br /> ALDEN PARK <br /> Tracy,San Joaquin County,California <br /> Concentrations reported in pg/L <br /> Date Ethyl- Total <br /> Well ID Sampled TPHd TPHdsg TPHg Benzene Toluene benzene Xylenes <br /> SCREENING WQO 1001 1001 5° 0.15 s 42° 29° 17 4 <br /> LEVELS ESL 100 e 100 e 100 n 1 7 40 30 a 20 a <br /> 01/30/98 NA <50 69 <0.5 <0.5 <0.5 <1.5 <br /> 07/20/00 <50 <50 <50 <0.5 <0.5 <0.5 <0.5 <br /> t 10/17/00 <50 <50 <50 <0.5 <0.5 <0.5 <0.5 <br /> 01/23/01 <50 <50 <50 <0.5 <0.5 <0.5 <0.5 <br /> 05/30/01 <50 <50 <50 <0.5 <0.5 <0.5 <0.5 <br /> ' 07/26/01 <50 <50 <50 <0.5 <0.5 <0.5 <0.5 <br /> 10/30/01 <50 <50 <50 <0.5 <0.5 <0.5 <0.5 <br /> 01/31/02 <50 <50 <50 <0.5 <0.5 <0.5 <0.5 <br /> 04/23/02 <50 <50 <50 <0.5 <0.5 <0.5 <0.5 <br /> ' 07/24/02 <50 <50 <50 <0.5 <0.5 <0.5 <0.5 <br /> 11/25/02 <50 <50 <50 <0.5 <0.5 <0.5 <0.5 <br /> 03/11/03 <50 <50 NS NS NS NS NS <br /> 08/27/03 <50 NA NS NS NS NS NS <br /> MW-4 02/18/04 <50 NA NS NS NS NS NS <br /> (cont.) 08/06/04 <50 NA NS NS NS NS NS <br /> 02/23/05 <50 NA NS NS NS NS NS <br /> ' 08/18/05 <29 NA NS NS NS NS NS <br /> 02/17/06 <50 NA NS NS NS NS NS <br /> 08/03/06 <50 NA NS NS NS NS NS <br /> 01/31/07 <50 NA NS NS NS NS NS <br /> 01/31/08 <50 NA NS NS NS NS NS <br /> 01/15/09 <50 NA NS NS NS NS NS <br /> 01/06/10 <50NA NS NS NS NS NS <br /> 03/08/11 10 51 J 67 J NS NS NS NS NS <br /> 03/08/11 D <100 NA NS NS NS NS NS <br /> 03/21/12 <120 NA NS NS NS NS NS <br /> ' 04/17/13 <50 NA NS NS NS NS NS <br /> 03/28/14 <50 NA NS NS NS NS NS <br /> 04/25/96 <500 NA <500 <0.2 <0.2 <0.3 <0.4 <br /> 04/02/97 4,400 70 70 <0.5 <0.5 <0.5 <2 <br /> ' 07/09/97 NA 120 60 <0.5 <0.5 <0.5 <2 <br /> 07/09/97 D NA 260 50 <0.5 <0.5 <0.5 <2 <br /> 10/07/97 NA 90 80 <0.5 <0.5 <0.5 <2 <br /> ' 01/30/98 NA 270 100 <0.5 <0.5 <0.5 <1.5 <br /> 07/20/00 15,000 210 <50 <0.5 <0.5 <0.5 <0.5 <br /> MW-5 07/20/00 D 17,000 870 <50 <0.5 <0.5 <0.5 0.9 <br /> 10/17/00 12,000 400 <250 x <2.5 x <2.5 x <2.5 x <2.5 x <br /> 1 10/17/00 D 12,000 280 <250" <2.5 x <2.5 x <2.5 x <2.5 x <br /> 01/23/01 11,000 300 <250 x <2.5 x <2.5 x <2.5 x <2.5 x <br /> 01/23/01 D 11,000 250 <250 x <2.5 x <2.5 x <2.5 x <2.5 x <br /> 05/30/01 4,500 130/70 9 <250 x <2.5 x <2.5 x <2.5 x <2.5 x <br /> ' 05/30/01 D 3,700 170/170' <250 x <2.5 x <2.5 x <2.5 x <2.5 x <br /> Page 2 of 10 <br /> Jo'- leidos <br />