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Table B-2: Historical Groundwater Measurements and Analytical Results DEPTH TO GROUNDWATER SAMPLE DATE GROUNDWATER ELEVATION ETHYL LOCATION SAMPLED (Feelbp) (Free..) TPH-K TPH-MO TPH-D TPH-G BENZENE TOLUENE BENZENE SYLENES MTBE DIPE E'TBE TAME TBA 12-DCA EDB Naphthalene With well 8015W 80218/ 80211V 8021B/ 8021BI cuing elevation EPAMdhoa- 8015M 8015M 8015M 8260B 8260B 8260E 8260E 8260E 8260B 8260E 82WB 82WB 8260B 8260E 8260E 8260B (Fed msl) WOO None None 100 µg/L' 5 µg/L' 1.0 µg/1, 150 µg/L 300 µB/L 1.750 µg/L 13 µg/L None None None 12µB/L 0S µg/1, 0.05 µg/L 17 W/L- MW-3 03/07/03 46.33 -27 69 NA NA NA 55 0.5 O.5 0.5 < 1.0 - 0.5 0.5 ' 05 105 < 5.0 NA NA NA 05/09/03 46.08 ?744 NA NA NA - 50 0.5 0.5 0.5 10 0.5 ' 0.5 = 0.5 0.5 50 05 NA NA 09/IV03 47.81 -29.17 NA NA NA 50 O.5 0.5 0.5 10 05 0.5 0.5 0.5 5.0 - 0.5 NA NA IV19/03 48.38 -2974 NA I NA NA 50 O.5 O'S 0.5 1.0 - 05 < 0.5 0.5 0.5 5.0 05 NA NA 03/14/04 47.00 :8.36 NA NA NA 50 OS OS 0.5 I,0 0.5 - 05 0.5 0.5 50 OS NA NA 06/09/04 47.08 28.44 NA NA NA 50 0.5 05 0.5 to -- 0.5 05 + 05 0.5 $0 0.5 NA NA OS/23/04 48.33 -29.69 NA NA NA 50 O.5 ' 0.5 0.5 + 1.0 05 0.5 0.5 05 5.0 -" 05 NA NA 12/29/04 48.78 -30A4 NA NA NA 50 0.5 0.5 0.5 1.0 05 05 05 < 0.5 5.0 0.5 NA NA 03/23/05 47,75 -29.11 NA NA NA 50 0.5 0.5 0.5 ' 10 0.5 05 0.5 0.5 5.0 = 0.5 NA NA 06/29/05 46,18 27,54 NA NA NA 50 0.5 05 0.5 to 0.5 - 05 < 0.5 OS < 5,0 NA NA NA 09111/05 47,19 =8.54 NA NA NA 50 O.5 05 0.5 1.0 0.5 ' 05 0.5 OS - 5.0 NA NA NA 12/20/05 47,80 29.16 NA NA NA 50 0.5 05 0.5 10 0.5 cs OS 05 5.0 < OS 05 NA 03/15/06 4560 -26.96 NA NA NA 50 05 0.5 1 05 I0 0.5 - 0.5 < 0.5 0.5 5.0 0.5 0.5 NA 06/21/06 42,52 -23.88 NA I NA NA 50 1 0.5 OS 0.5 - 1.0 < 0.5 0.5 OS -' 05 50 OS 05 NA 09/10/06 4251 -23.87 NA NA NA 50 0.5 0.5 0.5 L0 05 < 0.5 0.5 05 50 = OS 0.5 NA 12/12/06 42.30 33.66 NA NA NA < 50 0.5 0.5 0.5 I0 - 0.5 0.5 0.5 05 5.0 0.5 NA NA 03/10/07 41,18 -2.54 NA NA NA 50 0.5 0.5 0.5 1.0 0.5 05 0.5 05 " 5.0 05 05 NA 0&11/07 U)74 22.10 NA NA NA 50 0.5 0.5 01 < IO 0.5 < 0.5 05 05 50 + 05 NA NA 09/25/07 4148 -22.84 NA NA NA 50 0.5 05 0.5 to < 0.5 0.5 . 05 M05 : 5.0 0.5 0.5 NA V'04/07 41 64 -23.00 NA NA NA 50 0.5 0.5 0.5 1.0 < 0 5 03 = 0.5 0.5 O S NA 03/31/08 3990 QI^_6 NA NA NA + 50 0.5 05 0.5 1.0 05 0.5 0.5 05 0.5 NA 0109/08 3986 .2122 NA NA NA 50 0.5 0.5 ' 0.5 Lo 05 0.5 0.5 < 05 05 NA 09/OS/08 10.7] 22.13 NA NA NA 50 0.5 0.5 0.5 < 10 0.5 - 0.5 0.5 = O5 0.5 NA I1/20/08 41.61 -2297 NA NA NA50050.5 05 1.0 0 5 05 OS - 0.5 0.5 NA 02/24/09 41.3'_ 42.68 NA NA NA 50 0.5 0.5 0.5 I 0 0 5 OS < 0.5 0.5 0.5 NA 05/13/09 4091 22,27 NO]'SAMILED-Wlil.I.SAMPLFJ)BI-ANN(ALLY 10/20/09 4266 -24,02 NOT SAMPLE)-WELL S'AMPLFJ)Bl-ANNUALLY 05/14/10 40.90 226 NOTSAMPLED-WELL SAMPLED BI-ANNUALLY 04/29/11 3874 d0,10 NA NA NA 50 OS 0.5 - 0.5 < 1.0 ' 0.5 NA NA NA NA NA NA NA 11/03/11 3783 -19.19 NOTSAMPLE)-WELL SAMPLED BI-ANNUALLY 04/17/12 36.89 -I8.25 NOTSAMPLED-WELLSAMPLED BI-ANNUALLY 09/29/12 3704 -18,40 NOT SAMPLED-WELL SAMPLED BI-ANNUALLY 03/20/13 35.96 47.32 NA NA NA 1 50 0.5 0.5 0.5 < 1.0 < 0.5 1 NA NA NA NA NA NA NA 12/09/13 37AS -18.54 NOT SAMPLED-WELL SAMPLED BI-ANNUALLY 04/04/14 36.59 -17.95 N07'SAMI'LIi1)-WELL SAMPLED BI-ANNUALLY 11/07/14 38.38 .1974 NOTSAMI'LF/l-WELL SAMPLED BI-ANNUALLY 05/15/15 3802 -1938 NA NA NA 50 0.5 ' 0.5 0.5 1 1.0 1 0.5 1 NA NA NA NA NA NA NA 17/16/15 40,55 --21.91 NO1'SA PLAD-WELLSAMPLEJ)Bl-ANNUALLY 05/31/16 39.61 -20.97 NA NA NA 50 0.50 0,50 - 0.50 1 10 1 0.50 1 NA NA NA NA NA NA <t o 12/29/16 41A7 22.83 NOTS'AMPLED-WELL SAMPLEDANNUALLY 05/30117 3621 -17.57 C00 NA COO 50 0.50 < 0.50 -' 0.50 1- 1.0 028 1 NA NA NA NA 0.50 NA <0.50 11/29/17 35,35 -16.71 NO1'.SAMPLED.WELL SAMPLED ANNUALLY 20.57 05/16/18 3308 -12.51 C00 NA C00 50 < 0,50 0.50 050 1.0 0.50 NA NA NA NA < 0,50 NA <050 1012W 3290 -12.33 1 C00 NA C00 50 0.50 050 0.50 1 10 - 0.50 NA NA NA NA 0.50 0.50 1 <0.50 05/10/19 29A4 -857 1 C00 NA C00 50 0.50 050 0.50 LO 0.27 NA NA NA NA 0.50 0.50 1050 08/13/19 28,57 -8.00 1 C00 NA C00 50 0.50 0.50 0.50 1 LO - 0.50 NA NA NA NA < 0.50 -- 0.50 <050 X.\Project\5000_pgj 5960 SJC UST RFQ45960C County of San Joaquin-SJC Public Works\5960C12\5960C12A GW Monitoring\Data\5960C12 2022Q3 Motor Pool HisWrical DaM.AuTable B-2 Historical Data 4 of 11