ARCHIVED REPORTS_SECOND SEMIANNUAL AND 2014 ANNUAL GROUNDWATER MONITORING REPORT

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Table C.2 Historical Groundwater Concentration Data SFPP,LP-HOLT SITE SAMPLING TPH-E TPH-P BENZENE TOLUENE ETHYL- TOTAL COMMENTS WELL DATE (DRO) (GRO) BENZENE XYLENES Without Silica Gel (M/DN) (mg/L) (mg/L) (ug/L) (ug/L) (ug/L) (ug/L) M-1 03/02/11 NS NS NS NS NS NS Not sampled,well not accessible M-1 09/01/11 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 M-1 03/02/12 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 M-1 09/07/12 <0.50 <0.50 <0.50 <0.50 <0.50 110 M-1 03/12/13 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 M-1 09/13/13 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 M-1 03/05/14 NS NS NS NS NS NS Not sampled,well not accessible M-1 09/10/14 NS NS NS NS NS NS Not sampled,well not accessible M-8 03/02/11 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 M-8 09/01/11 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 M-8 03/02/12 NS NS NS NS NS NS Insufficient water to sample M-8 09/27/12 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 M-8 03/12/13 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 M-8 09/13/13 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 ' M-8 03/05/14 NS NS NS NS NS NS Insufficient water to sample M-8 09/10/14 NS NS NS NS NS NS Insufficient water to sample M-10 03/02/11 1.6L <0.50 <0.50 <0.50 <0.50 <0.50 M-10 09/01/11 0.84 <0.50 <0.50 <0.50 <0.50 <0.50 M-10 03/02/12 NS NS NS NS NS NS Insufficient water to sample M-10 09/27/12 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 M-10 03/12/13 0.54 <0.50 <0.50 <0.50 <0.50 <0.50 M-10 09/13/13 1.3L <0.50 <0.50 <0.50 <0.50 <0.50 M-10 03/05/14 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 M-10 09/10/14 NS NS NS NS NS NS Insufficient water to sample N-7 03/02/11 8AL 33 13,000 440 2,000 1,900 DUP-01 N-7 09/01/11 6.3' 21 8,900 130 1,100 780 DUP-01 N-7 03/02/12 2AL 11 3,300 160 860 920 DUP-01 N-7 09/07/12 1.3' <2.0 V 840 33 60 110 DUP-01 N-7 03/12/13 3.8L 15 3,900 180 1,000 840 DUP-01 N-7 09/13/13 13L <2.0 V 720 17 45 80 DUP-01 N-7 03/05/14 8.7 12 2,900 130 780 560 DUP-01 N-7 09/10/14 2.2 3.7 1,400 26 250 250 DUP-01 N-8 03/02/11 <0.50 1.3 0.59 2.2 150 73 N-8 09/01/11 <0.50 2.1 <0.5� 2.6 150 100 N-8 03/02/12 <0.50 1.0 0.65 <0.5 71 3.7 N-8 09/07/12 <0.50 1.3 <1.0 v 1.2 130 27 N-8 03/12/13 <0.50 5.3 7.3 7.6 840 120 N-8 09/13/13 0.59' 0.78 <1.0 v 1.3 100 32 N-8 03/05/14 <0.50 1.6 <1.0 v 2.2 130 70 N-8 09/10/14 NS NS NS NS NS NS Insufficient water to sample N-15 03/02/11 <0.50 <0.50 46 0.89 11 8.8 N-15 09/01/11 <0.50 0.93 92 2.6 2.0 5.4 N-15 03/02/12 <0.50 <1.00 <5.0° <5.00 <5.0° <5.0° N-15 09/07/12 <0.50 1.7 250 7.5 6.8 11 N-15 03/12/13 <0.50 0.58 <1.00 <1.00 <1.01 <1.00 N-15 09/13/13 <0.50 1.4 54 3.6 2.8 6.1 N-15 03/05/14 <0.50 <0.50 0.61 <0.50 <0.50 <0.50 N-15 09/10/14 <0.50 <0.50 <0.50 <0.50 0.82 0.83 file: Appendix_C_Historical_Data.xlsx\Sample Table2 Page 1 of 3