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Table B-2: Historical Groundwater Measurements and Analytical Results DEPTH TO GROUNDWATER SAMPLE DATE GROUNDWATER ELEVATION ETHYL- LOCATION SAMPLED (Feet bBs) (Feet..) TPH-K TPH-MO TPH-D TPH-G BENZENE TOLUENE BENZENE XYLENES NITER DUPE ETBE TAME TBA L2-DCA EDR N-,Fahnlene With well 8015M/ 8021B/ 8021B/ 8021 B/ 8021B/ mingele,onion EPA Method- 8015M 8015M 8015M 82608 8260E 8260E 8260B 8260B 8260E 8260B 8260B 8260B 8260E 8260B 8260B 82605 (Feet oul) Woo- None None 100 µg/L' 5 Vg/L' 1.0 VB/L 150 µg/L 300 µg/L 1,750 Vg/L 13 µg/L None None None 12 Vs/L- 0.5 µg/L 0.05 µg/L 17 µg/L F217 11/16/15 4084 =202 NA NA NA 50 0.5 0.5 05 1.0 II NA NA NA NA 0.5 NA <10 05/31/16 39.85 -2103 N'A NA NA 50 0.5 < 05 05 10 43 NA NA NA NA 05 NA <LO 1=9/16 41.71 M.89 <200 NA <00 J 29 1 0,10 050 050 1.0 30 NA NA NA NA 050 NA <0.so 05/30/17 36,50 -R68 <200 NA <00 ✓ 20 0.50 - 0,50 050 1.0 11 NA NA NA NA 050 NA J5O 11/n-9/17 3573 -1691 <00 NA 79°J ✓ 14 0.50 + 0.50 0,50 1.0 94 NA NA NA NA 050 NA 05/17/18 33.36 -1262 <00 NA <00 J 18 050 0.50 050 1.0 8.8 NA NA NA NA 0,50 NA 10/26/I8 33.17 -1243 <00 NA <00 62 - 0.50 0.50 0.50 1.0 7.4 NA NA NA NA 050 050 05/10/19 29.33 -8.59 <00 NA <00 J 16 < 0.50 + 0.50 <0,50 - lu 4] NA NA NA NA 050 050 OW13/19 2879 -8.05 <00 NA <00 50 0.50 < 0,50 0,50 Lo 19 NA NA NA NA 050 050 11/15/19 2899 -825 <00 NA <00 J13 0.50 0,50 -050 10 Is NA NA NA NA 050 0.50 02/24/20 28_'8 -7,54 <00 NA <00 J 11 0.50 0.50 050 1.0 �4 NA NA NA NA 0.50 0.50 05/27/20 2791 -7,17 <00 NA <200 J 15 050 0.50 0,50 + 1.0 2.6 NA NA NA NA -- 0.50 050 08/12/30 2956 -0.82 <00 NA <00 114 0.50 < 050 0,50 1.0 12 0.50 0.50 0.50 19 050 0.50 <0.50 11/23/20 29.54 -880 <00 NA <00 J 15 1 0.18 IJ 0.095 0,50 10 1.7 0,50 0.50 - O50 10 0.50 0.50 <0.50 02/17/21 2909 -8.35 <00 NA <00 J 13 050 0.50 0.50 - 1.0 1.3 050 0.50 0.50 10 -- 0.50 0.50 <50 05/2021 2948 .8,74 <00 NA <00 J 14 050 0.50 ' 0,50 1.0 LI 0,50 0.50 0.50 - 10 = 0.50 050 <050 08/20/21 30.54 .9.80 <00 NA <00 J 19 0,50 0.50 0.50 1.0 LI 0.50 050 0.50 10 O50 = 0.50 <0.50 11/23/21 30.72 -9.98 <00 NA <00 J16 + 0.50 050 -0.50 10 1.3 050 0.50 050 10 0.50 0,50 <050 03/09/22 30.17 .9.43 <00 NA <00 < 50 050 0,50 0.50 -+ 1.0 1.0 0,50 0.50 < 0.50 10 O50 050 <050 05/19/22 30.54 -9.80 <20 NA <20 < 50 0.50 0.50 0.50 1.0 090 050 0,50 050 10 0.50 0.50 <D.50 09/08/2^- 31.82 -11.08 <00 NA <00 50 < 0.50 0.50 0.50 1 0 1.5 050 0,50 0.5 110 0.50 0.50 1.4 MW-5 IV19/03 49.03 -2952 NA NA NA 50 0.5 0.5 05 '- 1.0 5 5 5 5 50 5 1 NA NA 19.51 03/24/04 47.60 -28.09 NA NA NA 50 0.5 0.5 - 05 1.0 0.5 0.5 05 0.5 50 0.5 NA NA 06/09/04 47.85 -2834 NA NA NA 50 0.5 0.5 05 10 0.5 0.5 0.5 0.5 5,0 0.5 NA NA OBR3/04 44D5 49.54 NA NA NA 50 0.5 0.5 05 < to 05 - 0.5 05 0.5 12 0.5 NA NA =9/04 49.57 -3006 NA NA NA 50 0.5 0.5 0.5 1.0 < 0.5 < 0.5 0.5 0.5 5.0 0.5 NA NA 03/23/05 4828 .2877 NA NA NA 50 0.5 0.5 05 to 05 0.5 05 0.5 = 50 05 NA NA 06C9/05 46.91 27.40 NA NA NA 50 OS 05 0.5 1.0 0.5 05 < 0.5 < 05 < 5.0 NA NA NA 09/21/05 4]91 .28.40 NA NA NA 50 0.5 0.5 05 1.0 us 0.5 < 0.5 < 05 < 5.0 NA NA NA 12C0/05 48,61 =9.10 NA NA NA 50 0.5 0,5 05 1.0 - 0.5 < 0.5 < 0.5 < 05 50 05 0.5 NA 03/15/06 1 46,31 26.80 1 NA NA NA 50 0.5 0.5 05 to 05 0.5 0.5 0.5 5.0 0,5 OS NA D6/21/06 43.32 -23 81 NA NA NA 50 1.0 0.5 0.5 1.0 0.5 < 05 0.5 < 0.5 5.0 0.5 OS NA 09R0/O6 4332 -23.81 NA NA NA 50 O.5 0.5 05 1.0 0.5 < 0.5 0.5 0.5 5,0 0.5 0.5 NA 12/12/06 43_ 4371 NA NA NA 50 - 0.5 0.5 05 - 1.0 05 < 0.5 " 0.5 05 5.0 0.5 NA NA 03/20/07 41,98 2?47 NA NA NA 50 05 0.5 05 1.0 0.5 0.5 0.5 0.5 5.0 0.5 0.5 NA 0NI1/07 41,55 =-1.04 NA NA NA 50 0.5 0.5 0.5 1.0 0.5 0.5 0.5 ' 0.5 so 0.5 NA NA 09/25/07 42.16 =.65 NA NA NA 50 0.5 0.5 -0.5 10 0.5 05 0.5 0.5 1 5.0 0.5 05 kNA 12/04/07 42.37 -22.86 NA NA NA 50 0.5 0.5 :0.5 1.0 0.5 10.5 03 0.5 5.0 0.5 05 03/31/08 40.55 -21.04 NA NA NA 50 - 0.5 0.5 '=0.5 l o - 0.5 = 0.5 - 0.5 05 50 0.5 05 06/09/08 40.68 -'-'-LI] NA NA NA < 50 0.5 0.5 0.5 1.0 0.5 < 0.5 O.5 0.5 5.0 0.5 < OS 09/05/08 4140 -21.89 NA NA NA 50 0.5 0.5 0.5 " l o 0.5 < 0.5 0.5 < 05 5.0 05 < 05 I120/OS 4223 ^_".7^- NA NA NA 50 < 0.5 0.5 - 0.5 to 0.5 05 0.5 ' 05 < 5.0 - 0.5 05 02C4/09 41]2 1,11 NA NA NA 50 < 0.5 05 - 05 1.0 05 05 -- 0.5 OS 50 < 0.5 05 05/13/09 41,32 -2181 NOTS'AMPLLD-WELL SAMPLEDBI-ANNUALLY 10/20/09 43.13 .2362 N0TSAMPLED-WELLSAMILEU9/-ANNUALLY 05/14/10 4131 -21.80 NOTSAMPLED-WELL SAMPLEDRI-ANNUALLY X:\PMjec65000_16\5960 SJC UST RFQ\5960C County of San Joaquin-SJC Public Works\5960C12\59SOC12A GW Monitoring\Data\5960C12 2022Q3 Motor Pool Historical Data.xlsxTable B-2 Historical Data 6 of 11