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Table B-1: Historical Groundwater Measurements and Ana ytical Results SAMPLE LOCATION lop ot casIng ehn 3(1011 DATE SAMPLED DEPTH TO GROUNDWATER (Feet bgs) GROUNDWATER ELEVATION (Feet mg) I ('H-K TPH-MO TPH-D TPII-C BENZENE TOLUENE ETHYL, BENZENE XYLENES MTBE DOPE ETBE TAME TBA I,2-DCA EDB Naphthalene Method 0015M 8015M 6015M 8015M 602110 8021B 8021B 0021B 11260B 8260B 0260B 52600 8260B 8260B 826013 82608 MCL None None 56 pg,'L ' 5 pg't - 1 0 pet 150 )44, 300 pg/L 1,750 pg/L 13 oWL None None None 12 g'L. 0.5 ttg,/L 0.05 lig/L MW-7 18.05 03/23/05 46.43 -20.30 NA NA NA <50 <0.5 <11.5 <0.5 06/29/05 44.95 -26.90 NA NA NA < 50 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 1 < 1 < 1 < 5 NA NA NA 09/21/05 45.85 -27.00 NA NA NA < 50 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 1 < 1 < 1 < 5 NA NA NA 12/20/05 46.62 -28.57 NA NA NA < 50 < 0.5 < 0.5 < 0.5 03/15/06 44.45 -26.40 NA NA NA < 50 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 1 < 1 < 1 0 5 < 1 < 0.5 NA 06/21/06 41.43 -2138 NA NA NA < 50 < 0.5 < 0.5 < 0.5 0 I < 0.5 < 1 .0 I 0 1 0 5 < 1 < 0.5 NA 09/20/06 41.36 -23.31 NA NA NA < 50 < 0.5 < 0.5 < 0.5 < 1 0 0.5 < 1 12/12/06 41.31 -23.26 NA NA NA 0 50 < 0.5 < 0.5 < 0.5 0 I < 0.5 0 I 03/20/07 40.22 -22.17 NA NA NA < 50 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 1 0 I 06/11/07 39.72 -21.67 NA NA NA < 50 < 0.5 < 0.5 < 0.5 0925/07 40.35 -22.30 NA NA NA < 50 0 0.5 < 0.5 0 0.5 0 I < 0.5 12/04/07 40.55 -22.50 NA NA NA < 50 < 0.5 0 0.5 < 0.5 03/31/08 38.85 -20.80 NA NA NA < 50 < 0.5 < 0.5 < 0.5 0 I < 0.5 0 1 < 1 0 I 0 5 0 I < 0.5 NA 06/09/08 39.80 -21.75 NA NA NA < 50 < 0.5 < 0.5 < 0.5 09/05/08 39.60 -21.55 NA NA NA < 50 < 0.5 < 0.5 < 0.5 < 1 0 0.5 < 1 < 1 0 I 0 5 11/20/08 40.50 -22.45 NA NA NA < 50 < 0.5 < 0.5 0 0.5 0 I < 0.5 < 1 0 I < 1 < 5 < 1 < 0.5 NA 02/24/09 40.(13 -21.98 NA NA NA .0 50 < 0.5 < 0.5 < 0.5 0 1 < 0.5 < 1 0 I 05/13/09 39.61 -21.56 NOT SAMPLED - WELL SAMPLED 81-ANNUALLY 10/20/09 41.30 -23.25 NOT SAMPLED - WELL SAMPLED 131-ANIVUALLY 05/14/10 39.62 -21.57 NOT SAMPLED- WELL SAMPLED 81-ANNUALLY 04/29/11 37.49 -19.44 I NA I NA 1 NA I < 50 I < 0.5 I < 0.5 I < 0.5 I < 1 I , 0.5 N4 N4 NA NA NA .\.4 NA II/03/11 36.71 -18.66 NOT SAMPLED - WELL SAMPLED 131-ANNUALLY 04/17/12 37.80 -19.75 NOT SAMPLED - WELL SAMPLED 81-ANNUALLY 09/28/12 36.01 -17.96 NOT SAMPLED - WELL SAMPLED 81-ANNUALLY 03/20/13 34.90 -16.85 I NA I NA I NA I 0 50 I < 0.5 I < 0.5 I < 0.5 I < 1 I < 0.5 NA NA NA NA NA NA NA 12/09/13 36.09 -18.04 NOT SAMPLED - WELL SAMPLED 131-ANNUALLY 04/04/14 35.44 -17.39 NOT SAMPLED - WELL SAMPLED 81-ANNUALLY 11/07/14 37.17 -19.12 NOT SAMPLED - WELL SAMPLED 81-ANNUALLY 05/15/15 36.67 -18.62 1 NA I NA I NA < 50 I < 0.5 I < 0.5 I < 0.5 1 < 1 I < 0.5 .1 NA NA NA NA NA NA NA 11/16/15 39.16 -21.11 NOT SAMPLED - WELL SAMPLED 81-ANNUALLY 05/31/16 38.21 -20.16 I NA I NA I NA 1< 50 I o 0.5 I 0 0.5 I < 0.5 I < 1 I < 0.5 NA NA NA NA NA NA <1.0 1229/16 41)1)3 -21.99 NOT SAMPLED - WELL SAMPLED ANNUALLY CH 1 Vk ELI. 12 20 01 NA NA < 50 "05 <0.5 < 0.5 , (IS , 11.5 -'(1,5 . /5 - 5 N4 I AS-1 06,06/11 N-I NA V I 210,000 46,000 780 6,300 22,000 3,900 AA AA A.4 NA NA 116,17111 ;, 4), NA NA 16.000 7,900 49 130 700 3,300 NA N4 N4 V.4 NA 113/21/13 7<44 NA NA.64 1,800 550 ,, . 10 920 NA 6.-1 AA NA SVE-213 03/21/13 36 IS NA NA NA 21,000 800 1,400 490 2,400 9,600 A4 A 4 AA A.1 6/ 1.1 NA 1 12/09/13 3752 N.4 <620 <120 13,000 430 140 840 4,300 1,000 .6.4 V I VI VI IS /I 490 05/15/15 36 III ml I i I III) N4 .64 '6 4 N4 NI 16 6' I 350' X:\ Project \5000_prj \ 5960 SJC UST RFQ\ 5960C County of San Joaquin - SJC Public Works \5960C6Reports Mork Plan /App B Background \20161229_596005A Historic Data.xlszTable B-1 7 of 8