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Table B-2: Historical Groundwater Measurements and Analytical Results <br /> DEPTH TO GROUNDWATER <br /> SAMPLE DATE GROUNDWATER ELEVATION ETHYL- <br /> LOCATION SAMPLED (Feet bp) (Feet..) TPH-R TPH-MO TPH-D TPH-G BENZENE TOLUENE BENZENE SYLENES MTBE DIPE ETBE TAME TBA 12-DCA EDB Naphthalene <br /> With well 8015W 8021B/ 8021B/ 802IB/ 8021B/ <br /> cssing elevation EPAMethod- 8015M 8015M 8015M 8260E 8260B 82608 82MB 8260E 8260B 8260B 81-60B 82WB 8260B 8260B 8260B 8260E <br /> (Feet nnl) WOO- None Nene I N 48/1- 5 µ6/L, 1.0 µg/L 150 µg/L 300 µg/L 1,750 µg/L 13 AWL None None None 12 µg/L- 0.5 µg/L 0o5 µg/L 17 µ8/L <br /> M W-7 09/20/06 41 36 .23.31 NA NA NA 50 0.5 O.5 0.5 to < 0.5 05 0.5 < 0.5 5.0 05 05 NA <br /> I2/I2106 4131 .2326 NA NA NA 50 0.5 ; 0.5 0.5 L0 0.5 05 0.5 05 50 0.5 NA NA <br /> 03/20/07 4022 '-2.❑ NA NA NA 50 < 0.5 05 0.5 1.0 0.5 < 05 0.5 0.5 5.0 1 0.5 0.5 NA <br /> 06/11/07 39.72 .21,67 NA NA NA 50 0.5 0.5 1 05 1.0 0.5 = 0.5 < 0.5 0.5 5.0 0.5 NA NA <br /> 09/25/07 4035 2^-.30 NA NA NA 50 0.5 0.5 05 1.0 0.5 ' 0.5 = 0.5 05 so 05 0.5 NA <br /> 12/04/07 40.55 -2'-.50 NA NA NA 50 0.5 0.5 05 1.0 = 0.5 05 0.5 0.5 50 - 0.5 0.5 NA <br /> 03/31/09 38.85 -^_0.80 NA NA NA 50 0 5 0.5 05 1.0 0.5 0.5 < 0.5 0.5 5.0 0.5 0.5 NA <br /> 0W09/08 39.80 :L75 NA NA NA 50 03 0.5 < 0.5 1.0 0S < 0.5 0.5 0.5 < 5.0 05 0.5 NA <br /> 09/05/08 3960 21.55 NA NA NA 50 < 05 0.5 0.5 I.0 0.5 OS 05 05 5.0 0.5 0.5 NA <br /> 11/20/08 4050 22.45 NA NA NA < 50 < 0.5 05 0.5 I 0 0.5 0.5 0.5 0.5 < 5.0 < 0.5 < 0.5 NA <br /> 02/24/09 40 03 =1.98 NA NA NA 50 05 0.5 < 05 I D 0.5 0.Is 0.5 05 = 5.0 0.5 05 NA <br /> 05/13/09 3961 21,56 NOTSAMPLED-WELL SAMPLED H/-ANNUALLY <br /> 10/20/09 41.30 33,25 NOTSAMPLED-WELL SAMPLED BY ANNUALLY <br /> 05/14/10 3962 .21,57 NOTSAMPLED-WELL.SAMPLED HI-ANNUALLY <br /> 04/29/11 3T49 P-1796 <br /> 9 P$ NA NA NA 50 < 0.5 0.5 0.5 to a 0.5 NA NA NA NA NA NA NA <br /> 11/03/11 36.71 8.66 N'(J/'.1AMPLED-WELLSAMPLEDBI-ANNUALLY <br /> 04/17/12 3Z80 9,75 NwstuPLED-WELL SAMPLEDBI-ANNUALLY <br /> 09/28/12 3601 A107 SAMPLED-WELL SAMPLEDBI-ANNUALLY <br /> 03C0/13 34.90 6.85 NA NA NA < 50 = 05 0.5 05 - 1 0 - 05 NA NA NA NA NA NA NA <br /> 12/09/13 36.09 8U NO7'SAMPLFD-WELL SAMPLED HI-ANNUALLY04/04/14 35.44 739 NOYSAM!'1LD-WALL SAMPLED HI-ANNUALLY <br /> 11/07/14 37.17 9A2 NOYSAMPLED-WELL SAMPLED HI-ANNUALLY <br /> 05/15/15 36.67 8.62 NA NA NA < 50 0.5 0.5 0.5 1 0 0.5 NA NA NA NA NA NA NA <br /> 11/16/15 39,16 .2111 N07.. /'1./J)-WELLSAMPLED8I-ANNUALLY <br /> 05/31/16 38.21 20,16 NA NA NA < 50 - 0.5 1 0.5 1-05 1 1,0 1 05 1 NA NA NA NA NA NA <LO <br /> IJ29/16 40.04 d199 NOT SAMPLED-WELL.1'Ahll'LED ANNUALLY <br /> 05/30/17 34.81 .16.76 <200 NA C00 J 12 < 0.50 < 0.50 0.50 1 L0 1 0,50 NA NA NA NA < 0,50 NA 10.50 <br /> 11/2e/17 34.27 -1622 AY)1'&IMI'1/IU-WELL SAMPLEUANNUALLY <br /> 1998 05/16/18 32.09 .12.11 Q00 NA <200 J 12 ' 0.50 0,50 0.50 1.0 0.50 NA NA NA NA - 0.50 NA <oSo <br /> 10/208 3195 .11.97 <00 NA C00 63 < 0.50 050 <0.50 to < 0.50 NA NA NA NA < 0.50 < 0.50 <050 <br /> 05/09/19 28.23 4,25 <200 NA <200 112 0.50 0,50 0.50 < 1.0 - 050 NA NA NA NA 050 1- 0.50 1050 <br /> 08/13/19 27.67 4.69 Q00 NA <200 - 50 0.50 050 0.50 < 10 0,50 NA NA NA NA 0.50 050 1050 <br /> 11/14/19 27.90 -7,92 Q00 NA Q00 J 8.9 050 0.50 0.50 LO 0.50 NA NA NA NA 050 0,50 <O50 <br /> 02/25/20 2720 -7.21 <'00 NA <200 < 50 0.50 - 0.50 0.50 = LO 0.50 NA NA NA NA 0.50 050 <050 <br /> 05/2600 26.85 -6,87 <00 NA Q00 .- 50 0.50 0,50 0.50 - L0 050 NA NA NA NA 0,50 0.50 eo50 <br /> 08/12/20 27.47 -7,49 G00 NA COO J 82 < 0.50 < 0.50 0.50 LO 030 0.50 < 0.50 0.50 < 10 < 0.50 050 1050 <br /> 11/2/20 28.38 440 C00 NA <200 J 11 0,50 < 0.50 0.50 < 1.0 0.50 0.50 0.50 - 0.50 10 050 0.50 <050 <br /> 02J17/21 27.98 -8.00 C20 NA <Y20 1 J 93 0.50 0.50 1 0.50 < 1.0 0.50 050 < 0.50 < 050 < IO 050 0.50 <0.50 <br /> 05/19/21 2825 4.27 <200 NA <200 J 11 1 0.20 1 02 JJ 0.14 J 049 0.50 0.50 + 0.50 - 0.50 + 10 050 - 050 <0.50 <br /> OS/^_0/21 2931 -933 G'00 NA Q00 J 16 < 0.50 1 0.096 0.50 1.0 0.50 0.50 < 0.50 0.50 - 10 O50 = 0.50 <0.50 <br /> 11/23/21 2949 -9.51 <'00 NA <200 J 10 �- 0,50 a 0.50 0.50 1.0 < 0.50 0.50 �- 050 �- 0.50 10 0.50 0.50 <0.50 <br /> 03/09/22 28.96 -8.98 Q20 NA Q+0 50 < 0950 < 0.50 <0.50 1.0 0,50 0.50 0.50 0.50 10 0.50 0.50 <0.50 <br /> 05/IS/22 2923 -925 <30 NA Q30 - 50 0,50 < 0.50 0,50 1.0 0.50 < 0,50 050 < 0.50 10 050 0.50 <0,50 <br /> 09/07/22 30.55 -10.57 <00 NA <'00 < 50 0.50 050 0.50 10 � 0.50 < 0.50 050 - 050 10 0.50 0.50 <0.50 <br /> MW-8 05/16/18 3349 -1277 <200 NA <200 J 16 0.50 O50 0.50 LO t5 NA NA NA NA 2.1 NA <0.50 <br /> 2032 10/26/18 3328 42.56 1200 NA <200 63 0,50 0.50 0.50 1.0 16 NA NA NA NA 2.2 0.50 <0.50 <br /> X\Project\.5000_prjtS960 SJC UST RFQ\5960C County of San Joaquin-SJC Public WOrks\5960C12\6960C12A GW Monitodng\Data\596OC12 2022Q3 Motor Pool Historical Data.xlsxTable B-2 Historical Data 9 of 11 <br />