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

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Table A: Historical Groundwater Measurements and Analytical Results DEPT14 TO GROUNDWATER SAMPLE DATE GROUNDWATER ELEVATION ETHYL- 1,2- LOCATION SAMPLED (Feet fags) (Feet nisl) TPH-K TPII-N10 TPH-D TPH-G BENZENE TOLUENE BENZENE XYLENES N-1TBE DIPEJ ETBE TANTE TBA DCA EDB Naplithatene Method 8015M 8015NI 9015M 8015M 8021B 8021B 8021E 8021B 8260B 8260B 8260E 8260B 8260B 8260B 8260E 8260B top of casing elevation MCL None None 56 1LgIL 5 11g/ 1.0µg/L 150µglL 300µg/L 1,750 1rg/L 13 µglL None None None I2 lig/[. 0.5µglL 0.05µglL NINV-3 12/06/01 45.50 -26.86 NA NA NA 3,000 310 400 61 360 21 < 2 <2 <2 < 20 <2 NA NA 18.64 03/29/02 44.53 -25.89 NA NA MA 68 15 1.6 <0.5 2.2 < 0.5 < 0.5 < 0.5 <0.5 < 5 <0.5 NA NA 05/06/02 44.69 -26.05 NA NA Ni[ < 50 < 0.5 < 0.5 < 0.5 08/22/02 46.35 -27.71 NA NA NA < 50 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 5 < 0.5 NA Nlf H/26/02 47.44 -28.30 NA Nr1 NA < 50 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.5 < 5 < 0.5 NA Nil 03/07/03 46.33 -27.69 Nff NA NA 55 < 0.5 < 0.5 < 0.5 05/09/03 46.08 -27.44 NA NA NA < 50 < 0.5 < 0.5 < 0.5 09/12/03 47.81 -29.17 NA IVA NA < 50 < 0.5 < 0.5 < 0.5 < l < 0.5 < 0.5 < 0.5 < 0.5 < 5 < 0.5 NA NA 12/19/03 48.38 -29.74 NA Nff NA < 50 < 0.5 < 0.5 < 0.5 03/24/04 47.00 -28.36 NA NA NA < 50 < 0.5 < 0.5 < 0.5 06/09/04 47.08 -28.44 NA NA NA < 50 < 0.5 < 0.5 < 0.5 08/23/04 48.33 -29.69 NA NA NA < 50 < 0,5 < 0,5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.5 < 5 < 0.5 NA NA 12/29/04 48,78 -30.14 NA NA NA < 50 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.5 < 5 < 0.5 NA NA 03/23/05 47.75 -29.11 NA NA NA < 50 < 0.5 < 0.5 < 0.5 06/29/OS 46.18 -27.54 NA NA NA < 50 < 0.5 < 0.5 < 0.5 < 1 < 0,5 09/21/05 47.18 -28.54 NA NA NA < SD < 0.5 < 0.5 < 0.5 < l < 0.5 < 1 12/20/05 47.80 -29.16 NA NA NA < 50 < 0.5 < 0.5 < 0.5 03/15/06 45.60 -26.96 NA NA NA < 50 < 0.5 < 0.5 < 0.5 06/21/06 1 42.52 -23.88 NA NA NA < 50 < 0.5 < 0.5 < 0.5 09/20/06 42.51 -23.87 NA NA NA < 50 < 0,5 < 0.5 < 0.5 12/12/06 42.30 -23.66 NA Nsf NA < 50 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 1 < 1 < 1 < 5 03/20/07 41.18 -22.54 NA NA NA < 50 < 0.5 < 0.5 < 0.5 06/11/07 40.74 -22.10 NA NA NA < 50 < 0.5 < 0.5 < 0.5 09/25/07 41.48 -22.84 NA NA NA < 50 < 0.5 < 0.5 < 0.5 < 1 < 0.5 12/04/07 41.64 -23.00 NA NA NA < 50 < 0.5 < 0.5 < 0.5 03/31/08 39.90 -21.26 NA NA NA < 50 < 0.5 < 0.5 < 0.5 06/09/08 39.86 -21,22 NA NA NA < 50 < 0.5 < 0,5 < 0.5 09/05/08 40.77 -22.13 NA NA NA < 50 < 0.5 < 0.5 < 0.5 < 1 < 0.5 11/20/08 41.61 -2297 NA NA NA < 50 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 1 02/24/09 41.32 -22.68 NA NA NA < SQ < 0.5 < 0.5 < 0.5 < 1 < 0.5 05/13/09 40.91 -22.27 NOT SAMPLED-WELL SAMPLED BIANNUALLY 10/20/09 42.66 -24.02 NOT SAMPLED-FFBLL SAMPLED BI-ANNUALLY 05/14/10 40.90 -22.26 NOT SAMPLED-FYELL SAMPLED BI-ANNUALLY 04/29/11 38.74 -20.10 NA NA NA < 50 1 < 0.5 1 < 0.5 I < 0.5 < 1 < 0.5 NA NA NA NA NA NA NA 11/03/11 37.83 -19.19 NOT S,41PLED-FYELL SAMPLED BI-ANNUALLY 04/17/12 36.89 -18.25 NOT SAMPLED-WELL SAMPLED BI-ANNUALLY 09/28/12 37.04 -18.40 NOT SAMPLED-WELL SAMPLED BI-ANNUALLY 03/20/13 35.96 -17.32 NA NA NA < 50 1 < 0.5 1 < 0.5 1 < 0.5 < 1 < 0.5 NA NA NA NA NA NA NA 12/09/13 37.18 -18.54 NOT SAillPLED-WELL SAMPLED BI-ANNUALLY 04/04/14 36.59 -17.95 NOT SAMPLED-WELL SAMPLED BI-ANNUALLY 11/07114 38.38 -19.74 NOT SAVPLED-FYELL SAMPLED BI-ANNUALLY 05/15/15 38.02 -19.38 NA I NA NA < 50 1 < 0.5 < 0.5 1 < 0.5 < 1 < 0.5 NA NA NA NA NA NA NA 11/16/15 40.55 -21.91 NOT SAI4IPLED-IYELL SAAMLED BI-ANNUALLY X.%Project15000_prj15960 SJC UST RFQ15960C County of San Joaquin-SJC Public Works15960C515960C5A MonitoringlReports12H2O15120151116_5960C5A Historic Data 2H2O15.xlsxTable A 3 of 8