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i J93 <br /> Historical Groundwater Monitoring and Analytical Data <br /> Ranch Market <br /> 23569 South Santa Fe Road <br /> Riverbank California <br /> Well NoJ Ethyl- EPA method 8260 B <br /> Elevation Date Benzene Toluene benzene Xylenes TPD-G MTBE TBA DIPS ET TAME 1,2-DCA EDB DTW** SPT "TE <br /> ..(TOC)* (u ) (ug/-) (u°n) (u�) (ua/-) (ugJ-) (u�) (u,V-) OLO (u3n-) (use) (Rg/-) (ft) (h) (h) <br /> oil Boring Grab WaterSamples <br /> -1 01/2378 36,4001 47,100 3,990 2,000 238,000 a ND ND ND ND ND - - <br /> epth Discrete Grab Water Samples <br /> GP-1 07/18/00 <0 50 <0 50 <0 50 <0 50 120 b 12 6.2 <0 50 <0 50 <0 50 <0 50 <0 50 32-34 c - <br /> P-2 07/17/00 130 96 15 45 680 b 12 <5 0 <0 50 <0 50 <0 50 <0 50 <0 50 32-34 c - <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 c - <br /> P 4 07/18/00 1A <0 50 <0 50 <0 50 <50 b 11 <5 0 <0 50 <0 50 <0 50 <0 50 <0 50 36 37 c - <br /> B-I 07/24/00 110 530 62 340 2,200 b 54 <5 0 <0 50 <0 50 4 50 <0 50 <0 50 75-78 c - - <br /> B-2 07/25/00 5.3 0.56 16 49 140 b 5.3 <5 0 <0 50 <0 50 <0 50 <0 50 <0 50 75-78 c <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 c c <br /> PT-1 10/12/01 <0 50 <0 50 <0 50 <0 50 <50 b <0 50 <5 0 <0 50 <0 50 <0 50 <0 50 <0 50 38-40 c <br /> CPT-2 10/12/01 - -- -- -- - -- -- - -- <br /> PT-2A 10/12/01 <0 50 <0 50 <0 50 <0 50 <50 b <0 50 <5 0 <0 50 <0 50 <0 50 <0 50 <0 50 33-35 c - <br /> PT-3 10/12/01 <0 50 065 <0 50 <0 50 <50 b <0 50 <5 0 <0 50 <0 50 <0 50 <0 50 <0 50 33-35 c <br /> Groundwater Monitoring Wells <br /> W-1 12/09/98 5,120 7,390 696 5,020 65,900 a 940 <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 /> 08/16/00 13,000 13,000 1,200 7,400 80,000 b 1,600 240 32 <2 0 <2 0 18 64 2799 000 7775 <br /> 11/16/00 880 630 34 740 6,800 b 83 <20 <2 0 <20 <2 0 <2 0 <2 0 2729 000 7845 <br /> 01/03/01 3,000 2,100 150 1,600 14,000 b 320 62 <5 0 <5 0 <5 0 <5 0 <5 0 2730 000 7844 <br /> 04/11/01 4,600 3,200 220 1,900 22,000 b 410 130 <10 <10 <10 <10 <10 2686 000 7888 <br /> 07/03/01 6,500 5,600 490 2,700 35,000 b 900 <250 <25 <25 <25 <25 <25 2789 000 7785 <br /> 10/01/01 4,500 1,700 400 1,800 22,000 b 570 <200 <20 <20 <20 <20 <20 2851 000 77 23 <br /> I <br /> File Project%RtverbanklTableslRB-01-4Q-GW-1 Paye 1 of 12/14/01 <br />