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<br /> • TABS
<br /> Historical Groundwater Monitoring and Analytical Data
<br /> Ranch Market
<br /> 23569 South Santa Fe Road
<br /> Riverbank California
<br /> Well NoJ Ethyl- EPA 80201 EPA method 8260 B
<br /> Elevation Date Benzene Toluene benzene Xylenes TP11-G MTBE MTBE TBA DIPS 11"A TAME 1,2-DCA EDB DTW-- SPT WTE
<br /> (TOC)• (A ) (Irk-) (A81L) (µg11.} (✓g/L) (pP�-) (Ag/ ) (Ag L) (AgIL) (frW (1+g/L) (r{S/-) (Ag/ ) (ft) (ft) (R)
<br /> oil Boring Grab Water Samples
<br /> -1 0112319$ 36,400 47,100 3,990 2,000 238,000 a -- ND ND ND ND ND -- -- -- -- --
<br /> epth Discrete Grab Water Samples
<br /> P-1 07/18/00 <0 50 <0 50 <0 50 <0 50 120 b -- 12 62 <0 50 <0 50 <0 50 <0 50 <0 50 32-34 d -
<br /> P-2 07/17/00 130 % 15 45 680 b 12 <5 0 <0 50 <0 50 <0 50 <0 50 <0 50 32-34 d -- --
<br /> P-3 07/17/00 31 <0 50 <0 50 <0 50 <50 b -- <0 50 <5 0 <0 50 <0 50 <0 50 <0 50 <0 50 32-34 d
<br /> P-4 07/18/00 14 <0 50 <0 50 <0 50 <50 b -- 11 <5 0 <0 50 <0 50 <0 50 <0 50 <0 50 36-37 d -- --
<br /> B-1 07/24/00 110 530 62 340 2,200 b -- 54 <5 0 <0 50 <0 50 <0 50 <0 50 <0 50 75-78 d -- --
<br /> B-2 07/25/00 5.3 056 16 49 140 b -- 5.3 <5 0 <0 50 <0 50 <0 50 <0 50 <0 50 75-78 d -- --
<br /> B-3 08/10/00 <0 50 <0 50 <0 50 <0 50 <50 b -- <0 50 <5 0 <0 50 <0 50 <0 50 <0 50 <0 50 35-37 e -- --
<br /> Groundwater Momtonng Wells
<br /> W-1 12/09/98 5,120 7,390 696 5,020 65,900 a -- 840 <200 <50 <50 <50 - 2636 000 7938
<br /> 10574 12/25/99 8,150 10,700 1,020 4,750 72,900 a -- 210 <20 <5 <5 <5 <5 <5 2766 000 7808
<br /> 04/06!00 3,300 2,100 130 3,800 24,000 b -- 320 49 <2 0 <2 0 <2 0 29 <2 0 2587 000 7987
<br /> LY
<br /> 08/16/00 13,000 13,000 11200 7,400 80,000 b -- 1,600 240 3.2 <2 0 <20 18 64 2799 000 7775
<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 27 19 000 78 13
<br /> 04/06/00 8,100 5,400 680 4,100 42,000 b 850 <100 <2 0 <2 0 <2 0 15 <10 2542 000 7990
<br /> 08/16/00 8,500 4,700 730 2,900 37,000 b -- 750 33 <2 0 <2 0 <2 0 11 <2 0 2731 000 7801
<br /> W-3 12!09198 913 1,530 165 1,360 17,800 a -- 43 <20 <5 01 <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 000 7803
<br /> 04/06/00 1,200 1,700 480 2,800 24,000 b -- 20 68 <0 50 <0 50 <0 50 27 <1 0 2603 000 7978
<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 7728
<br /> W4 12/09/98 3,560 4,980 559 4,070 42,500 a -- 170 <200 <50 <50 <50 2738 000 79 42
<br /> 10680 12!25/99 1,060 714 207 768 7,120 a -- 11.0 <20 <5 <5 <5 <5 <5 2869 000 78 11
<br /> 04/06/00 2,300 2,000 270 1,900 16,000 b -- 120 <20 <2 0 <2 0 <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 2897 000 7783
<br /> W-5 08/16/00 80 095 10 62 330 -- 41 12 <0 50 <0 50 <0 50 28 <0 50 2836 000 7763
<br /> 10599 08/21/00 -- - -- -- -- -- -- -- -- -- -- 2849 000 7750
<br /> File ProjectlRtverbanklTablesl RB-00 3Q GW-1 x1s Page 1 of 3 11/3/2000
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