ARCHIVED REPORTS_SECOND HALF 2015 (SEMI ANNUAL) GROUNDWATER MONITORING REPORT NOVEMBER 2015

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Table A: Historical Groundwater Measurements and Analytical Results DE,PTH TO GROUNDWATER SAMPLE DATE GROUNDWATER ELEVATION ETHYL- LOCATION SAMPLED (beet bgs) (Peet msl) TPS-I{ I TPH-MID TPH-D TPS-G BENZENE TOLUENE BENZENE XYLENES MTBE DIPE ETBE TAME TBA 1,2-DCA EDB Naphthalene Method 80151vl 8015M 801511 8015M 8021E 8021B 8021B 8021E 8260E 8260E 8260B 8260B 82606 8260B 82606 8260B top of casing elevation MCL None Pone 561tg/Lz 51tg/L` 1.0p2)L 1501tg/L 300ttg/L 1,7501tg/L I31tgIL [Anne Nonc None €21t€1Ll 0.5ugIL 0.05ItgIL MW-7 03/23/05 46.43 -28.38 NA NA NA < 50 < 0.5 < 0.5 < 0.5 < 1 0.7 < 0.5 < 0.5 < 0.5 < 5 < 0.5 NA INA 18.05 06/29/05 44.95 -2690 NA NA NA < 50 < QS < 0.5 < 05 < 1 < 0.5 < 1 09/21/05 45.85 -27.80 NA NA NA < 50 < 0.5 < 0.5 < 0.5 < l < 0.5 12/20/05 46.62 -28.57 NA NA NA < 50 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 1 03/15/06 44.45 -26.40 NA NA NA < 50 < 0.5 < 0.5 < 0.5 < l < 0.5 06/21/06 41.43 -23.38 NA NA NA < 50 < 0.5 < 0.5 < 0.5 < l < 0.5 < l < l < l < 5 09/20/06 41.36 -23.31 NA NA NA < 50 < 0.5 < 0.5 < 0.5 12/12/06 41.31 -23.26 NA NA NA < 50 < 0.5 < 0.5 < 0.5 03/20/07 40.22 -22.17 NA NA NA < 50 < 0.5 < 0.5 < 0.5 06/11/07 39.72 -21.67 NA NA NA < 50 < 0.5 < 0.5 < 0.5 < 1 < 0.5 09/25/07 40.35 -22.30 NA NA NA < 50 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 1 < 1 12/04/07 40.55 -22.50 NA NA NA < 50 < 0.5 < 0.5 < 0.5 03/31/08 38.85 -20.80 NA NA NA 50 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 1 < 1 < l < 5 < l < 0.5 NA 06/09/08 39.80 -21.75 NA NA NA < 50 < 0.5 < 0.5 < 0.5 < l < 0.5 09/05/08 39.60 -21.55 NA NA NA < 50 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 1 < 1 11/20/08 40.50 -22.45 NA NA NA < 50 < 0.5 < 0.5 < 0.5 02/24/09 40.03 -21.98 NA NA NA < 50 < 0.5 < 0.5 < 0.5 05/13/09 39.61 -21.56 NOT SAMPLED-IVELL SAMPLED BI-ANNUALLY 10/20/09 41.30 -23.25 NOT SAMPLED-IVELL SAMPLED BI-ANNUALLY 05/14/10 39.62 -21.57 NOT SAMPLED-IVELL SAMPLED BI-ANNUALLY 04/29/11 37.49 -19.44 NA NA NA j < 50 1 < 0.5 1 < 0.5 1 < 0.5 < 1 < 0.5 NA NA NA NA NA NA NA 11/03/11 36.71 -18.66 NOT.SAMPLED-IVELL SAMPLED BI-ANNUALLY 04/17/12 37.80 -19.75 NOT SAMPLED-IVELL SAMPLED BI-ANNUALLY 09/28/12 36.01 -17.96 NOT SAMPLED-IVELL SAMPLED BI-ANNUALLY 03/20/13 3490 -16.85 NA NA NA < 50 I < 0.5 < 0.5I < 0.5 12/09/13 36.09 -18.04 NOT SAMPLED- IVF,LL SAMPLED BI-ANNUALLY 04/04/14 35.44 -17.39 NOT SAMPLED-IVELL SAMPLED BI-ANNUALLY 11/07/14 37.17 -19,12 NOT SAMPLED-IVELL SAMPLED BI-ANNUALLY 05/15/15 36.67 -18.62 NA NA NA I < 50 1 < 0.5 I < 0.5 I < 0.5 11/16/15 39.16 -21.11 NOT SAMPLED-IVELL SAMPLED BI-ANNUALLY CITY WELL 1 12/28/01 NA NA I NA I < 50 1 < 0.5 1 < 0.5 j < 0.5 1 < 0.5 1 < 0.5 I < 0.5 J < 0.5 < 0.5 < 5 I < 0.5 NA INA AS-1 06/06/11 38.63 NA NA NA 210,000 46,000 1 780 6,300 22,000 31900 NA NA NA NA NA NA NA 06/17/11 38.46 NA NA NA 16,000 7,900 49 130 700 3,300 NA NA NA NA NA NA NA 03/21/13 36.44 NA NA NA 1,800 1 550 < 5 1 < 5 < 10 920 NA NA NA NA NA NA NA 12109/13 37.59 NOT SAMPLED-IVELL SAMPLED AS NEEDED SVE-2B 03/21/13 36.15 * ` NA NA NA 21,000 800 1,400 450 2,400 5,600 1 NA NA NA NA NA NA NA 12/09/13 37.32 NA <620 <120 13,000 430 140 840 4,300 1,000 NA NA NA NA < 10 1 NA 1490 05/15/15 38.10 NA <500 <100 NA NA NA NA NA NA NA NA NA NA 16 NA 350 t XAProjectl5000_prji5960 SJC UST RFQ15960C County of San Joaquin-SJC Public Works\5960C5\596005A MonitoringlReports12H2O15120151116-596005A Historic Data 2H2015.xlsxTable A 7 of 8