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TABLE 1 <br />HISTORICAL GROUNDWATER DATA - MONITORING WELLS <br />RANCH MARKET <br />23569 S. SANTA FE ROAD, RIVERBANK, CA <br />Page 9 of 10 <br />Well ID Date <br />Depth to <br />Water <br />Water <br />Elevation TPH-G Benzene Toluene <br />Ethyl <br />benzene <br />Total <br />Xylenes MTBE <br />TOC (feet) (feet MSL)(µg/L) (µg/L) (µg/L) (µg/L) (µg/L) (µg/L) <br />MW-8 12/09/98 <br />106.29 12/25/99 <br />04/06/00 <br />08/09/00 <50 <0.5 <0.5 <0.5 <0.5 <0.5 <br />08/16/00 28.46 77.83 75 0.64 <0.5 <0.5 0.95 <0.5 <br />11/16/00 27.78 78.51 1,700 2.0 1.3 1.3 2.6 0.51 <br />01/03/01 27.82 78.47 <50 <0.5 <0.5 <0.5 <0.5 <0.5 <br />04/11/01 27.37 78.92 760 <0.5 <0.5 <0.5 <1.0 <0.5 <br />07/03/01 28.55 77.74 <50 <0.5 <0.5 <0.5 <0.5 <0.5 <br />10/01/01 28.89 77.40 <50 1.1 <0.5 <0.5 1.0 <0.5 <br />01/03/02 27.73 78.56 <50 <0.5 <0.5 <0.5 <0.5 <0.5 <br />04/05/02 27.97 78.32 <50 <0.5 <0.5 <0.5 <0.5 <0.5 <br />07/12/02 29.19 77.10 <50 <0.5 <0.5 <0.5 <0.5 <0.5 <br />10/01/02 29.55 76.74 <50 <0.5 <0.5 <0.5 <0.5 <0.5 <br />106.29 01/10/03 28.36 77.93 <50 <0.5 <0.5 <0.5 <0.5 <0.5 <br />04/01/03 28.52 77.77 <50 <0.5 <0.5 <0.5 <0.5 <0.5 <br />07/02/03 28.73 77.56 <50 <0.5 <0.5 <0.5 <0.5 <0.5 <br />10/02/03 29.95 76.34 <50 <0.5 <0.5 <0.5 <0.5 <0.5 <br />01/09/04 29.06 77.23 <50 <0.5 <0.5 <0.5 <0.5 <0.5 <br />04/08/04 28.71 77.58 <50 <0.5 <0.5 <0.5 <1.0 <0.5 <br />07/01/04 29.30 76.99 <50 <0.5 <0.5 <0.5 <0.5 <0.5 <br />10/13/04 30.15 76.14 <50 <0.5 <0.5 <0.5 <1.0 <0.5 <br />01/05/05 29.53 76.76 <50 <0.5 <0.5 <0.5 <1.0 <0.5 <br />04/06/05 28.99 77.30 <50 <0.5 <0.5 <0.5 <1.0 <0.5 <br />07/13/05 29.83 76.46 <50 <0.5 <0.5 <0.5 <1.0 <0.5 <br />10/12/05 29.85 76.44 <50 <0.5 <0.5 <0.5 <1.0 <0.5 <br />01/11/06 26.49 79.80 <50 <0.5 <0.5 <0.5 <1.0 <0.5 <br />03/15/06 26.32 79.97 <br />06/08/06 25.77 80.52 <50 <0.5 <0.5 <0.5 <1.0 <0.5 <br />08/23/06 28.33 77.96 54 <0.5 <0.5 <0.5 <1.0 <0.5 <br />12/14/06 28.65 77.64 <50 <0.5 <0.5 <0.5 <1.0 <0.5 <br />03/23/07 28.32 77.97 <50 <0.5 <0.5 <0.5 <1.0 <0.5 <br />06/19/07 29.58 76.71 <50 <0.5 <0.5 <0.5 <1.0 <0.5 <br />02/06/08 29.13 77.16 <50 <0.5 <0.5 <0.5 <1.0 <0.5 <br />09/19/08 31.65 74.64 <50 0.61 0.87 0.89 2.0 <0.5 <br />05/10/13 <br />12/04/14 <br />05/14/15 <br />01/12/16 33.89 72.40 <50 <0.50 <0.50 <0.50 <1.0 <0.50 <br />11/02/16 33.99 72.30 <br />03/09/17 Field flooded; well inaccessible <br />09/29/17 33.01 73.28 <br />01/31/18 31.80 74.49 <br />08/12/18 34.12 72.17 <br />12/30/19 Not Accessible