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<br /> • TAB*
<br /> Hlstorlcal Groundwater Momtoring and Analytical Data
<br /> Ranch Market
<br /> 23569 South Santa Fe Road
<br /> Riverbank California
<br /> well No f Ethyl EPA mdbo&8260 B
<br /> m"0e9 Date Benzene Toluene beizene 71y16nes TMG MTSE T$A mm I�TBA TAb1E 1,2-DCA EDB DTw** 5PT wTE
<br /> �}5 (R } ( °_ (NIL) ( ? (u ) ( ) (A ) (u ) (tt 1L) (>i �) (ft) (ft} (fl)
<br /> 1.
<br /> -2 12/09/98 4,730 5,470 561 3,300 45,800 a 350 <400 <100 <100 <100 2590 000 7942
<br /> 10532 12/25/99 3,840 2,930 230 1,210 19,800 a 300 <20 <5 <5 <5 <5 <5 2719 000 78 13
<br /> 04/06/00 8,100 5,400 680 4,100 42,000 b 850 <100 <20 <20 <20 15 <10 2542 000 7990
<br /> 08/16/00 moo 4,700 730 2,900 37,000 b 750 33 <2 0 <2 0 <2 0 11 <2 0 2731 000 78 01
<br /> 11/16/00 1,500 330 22 320 4,700 b 100 <50 <5 0 <5 0 <5 0 <5 0 <5 0 2680 000 7852
<br /> 01/03/01 1,300 360 29 250 3,800 b 110 <50 <5 0 <5 0 <5 0 <5 0 <5 0 2694 000 7848
<br /> 04/11/01 5,400 1,200 280 1,100 17,000 b 340 <200 <20 <20 <20 <20 <20 2640 000 7892
<br /> 07/03/01 6,800 2,200 800 2,300 29,000 b 580 <250 <25 <25 <25 <25 <25 2763 000 7769
<br /> 10/01/01 1,400 1,000 150 500 6,900 b 76 <50 <5 0 <5 0 <50 <5 0 <5 0 28 02 000 7730
<br /> 01/03/02 1,000 840 72 550 5,500 b f 35 <50 <5 0 <5 0 <5 0 <5 0 <5 0 2679 000 7853
<br /> 04/05/02 3,400 930 110 710 10,000 b 240 <200 <20 <11 <20 <20 <20 2698 000 7S34
<br /> -3 12/09/98 913 1,530 165 1,360 17,800 a 43 <20 <5 0 <5 0 <5 0 - - 2646 000 7935
<br /> 10581 12/25/99 1,750 1,170 184 698 10,300 a <5 <20 <5 <5 <5 <5 <5 2778 0 00 7803
<br /> 04/06/00 1,200 1,700 480 2,800 24,000 b 20 6 8 <0 50 <0 50 <0 50 27 <1 0 2603 000 7979
<br /> 08/16/00 5,800 5,700 680 2,400 30,000 b 92 41 <2 0 <2 0 <2 0 13 <2 0 2853 000 77 28
<br /> 11/16/00 780 980 430 2,700 24,000 b 11 <20 <2 0 <2 0 <2 0 <2 0 <2 0 2741 000 7840
<br /> 01/03/01 210 150 28 220 2,600 b 3 8 <10 <1 0 <1 0 <1 0 <1 0 <1 0 2745 000 7836
<br /> 04/11/01 3,400 2,700 310 2,500 24,000 b 65 <100 <10 <10 <10 <10 <10 2699 000 7882
<br /> 07/03/01 3,600 3,300 430 2,000 21,000 b 100 <100 <10 <10 <10 11 <10 2823 000 7758
<br /> 10/01/01 3,700 3,400 420 2,000 25,000 b 55 <200 <20 <20 <20 <20 <20 2863 0 00 77 18
<br /> 01/03/02 1,200 950 86 730 9,200 b f 22 <50 <5 0 <50 <5 0 <5 0 <5 0 2725 000 7856
<br /> 04/05/02 5,200 3,600 400 2,100 25,000 b 100 <200 <20 QO <20 <20 <20 2756 000 78 25
<br /> -4 12109/98 3,560 4,980 559 4,070 42,500 a 170 Q00 <50 <50 <50 - - 27 38 000 7942
<br /> 10680 12/25/99 1,060 714 207 768 7,120 a 110 <20 <5 <5 <5 <5 <5 2169 000 7111
<br /> 04/06/00 2,300 2,000 270 11900 16,000 b 120 <20 <2 0 <20 <2 0 31 <2 0 2693 000 7987
<br /> 08/16/00 3,700 4,400 680 3,600 30,000 b 150 15 <0 50 <0 50 <0 50 <0 50 <0 50 2997 0 00 7783
<br /> 11/16/00 440 240 35 360 2,800 b 67 <10 <1 0 <1 0 <1 0 16 <1 0 2831 000 7849
<br /> 01/03/01 2,300 2,300 260 1,700 12,000 b 120 14 <1 0 <1 0 <1 0 2.5 <1 0 2833 000 7847
<br /> 04/11/01 5,600 6,100 940 5,400 41,000 b 170 <200 <20 QO <20 <20 <20 2787 000 7893
<br /> 07/03/01 4,700 4,700 860 4,600 32,000 b 170 <200 <20 <20 <20 <20 <20 2917 0 00 7763
<br /> 10/01/01 2,500 2,500 410 2,500 21,000 b 120 <100 <10 <10 <10 <10 <10 2955 000 7725
<br /> 01/03/02 550 250 67 620 4,000 b,f 84 <25 <2 5 <25 <2 5 <25 <2 5 2824 000 7856
<br /> 04/05/02 2,800 3,100 450 2,604 21,000 b 140 <200 <20 <20 <20 <20 <20 28 47 000 7833
<br /> File Prolea\RiverbanklTablesl RB-02-2Q-GW-1 Page 2 of 7 6/14102
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