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• Table C.2.Historical Groundwater Concentration Data <br /> • SFPP,L.P.Holt Release Site,Holt,California <br /> TPH-E <br /> • SAMPLING (DRO) TPH-P ETHYL- TOTAL <br /> • WELL DATE Without Silica Gel (GRO) BENZENE TOLUENE BENZENE XYLENES COMMENTS <br /> (M/D/Y) (mg/L) (mg/L) (µg/L) (µg/L) (µg/L) (µg/L) <br /> • M-1 03/05/14 NS NS NS NS NS NS Not sampled,well not accessible <br /> M-1 09/10/14 NS NS NS NS NS NS Not sampled,well not accessible <br /> M-1 03/05/15 NS NS NS NS NS NS Not sampled,well not accessible <br /> M-1 09/01/15 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <br /> M-1 03/02/16 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <br /> M-1 09/08/16 <0.050 <0.050 <0.50 <0.50 <0.50 <0.50 <br /> • M-1 03/09/17 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <br /> M-1 09/07/17 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <br /> • M-1 03/07/18 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <br /> • M-1 09/07/18 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <br /> M-8 03/05/14 NS NS NS NS NS NS Insufficient water to sample <br /> M-8 09/10/14 NS NS NS NS NS NS Insufficient water to sample <br /> • M-8 03/05/15 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <br /> M-8 09/01/15 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <br /> M-8 03/02/16 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <br /> • M-8 09/08/16 <0.050 <0.050 <0.50 <0.50 <0.50 <0.50 <br /> M-8 03/09/17 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <br /> • M-8 09/07/17 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <br /> • M-8 03/07/18 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <br /> M-8 09/07/18 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <br /> • M-10 03/05/14 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <br /> • M-10 09/10/14 NS NS NS NS NS NS Insufficient water to sample <br /> • M-10 03/05/15 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <br /> M-10 09/01/15 0.63 <0.50 <0.50 <0.50 <0.50 <0.50 <br /> • M-10 03/02/16 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <br /> • M-10 09/08/16 0.18 <0.050 <0.50 <0.50 <0.50 <0.50 <br /> M-10 03/09/17 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <br /> M-10 09/07/17 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <br /> M-10 03/07/18 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <br /> • M-10 09/07/18 3.8" <0.50 <0.50 <0.50 <0.50 <0.50 <br /> N-7 03/05/14 8.7 12 2,900 130 780 560 DUP-01 <br /> N-7 09/10/14 2.2 3.7 1,400 26 250 250 DUP-01 <br /> N-7 03/05/15 2.4' 16 6,400 210 1,700 1,300 DUP-01 <br /> . N-7 09/01/15 1.5' 11 2,800 77 1,000 680 DUP-01 <br /> • N-7 03/02/16 1.2' 16 4,700 140 1,400 990 DUP-01 <br /> N-7 09/08/16 5.3 KC 12 3,500 63 960 520 DUP-01 <br /> N-7 03/09/17 2.7' 12 4,700 180 840 300 <br /> • N-7 09/07/17 NS NS NS NS NS NS Not sampled,well not accessible <br /> N-7 03/07/18 7.3 CL 16 3,300 76 920 370 <br /> • N-7 09/07/18 4.1Lc 3.4 840 14 240 58 DUP-01 <br /> N-8 03/05/14 <0.50 1.6 <1.0 2.2 130 70 <br /> • N-8 09/10/14 NS NS NS NS NS NS Insufficient water to sample <br /> N-8 03/05/15 0.55' 3.6 <4.0' 5.8 650 46 <br /> • N-8 09/01/15 <0.50 1.3 0.57 1.1 94 24 <br /> N-8 03/02/16 <0.50 5.1 <4.0' 4.3 880 400 <br /> • N-8 09/08/16 0.27K 0.75 <1.0° <1.00 83 72 <br /> . N-8 03/09/17 <0.50 <0.50 <0.50 <0.50 7.7 39 <br /> N-8 09/07/17 <0.50 1.6 <0.50 1.0 82 42 <br /> N-8 03/07/18 <0.50 1.4 0.66 <0.50 71 34 <br /> • N-8 09/07/18 <0.50 0.93 1.4 <0.50 66 18 <br /> • <br /> • <br /> AX1001182027SCO Page 1 of 4 <br />