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1. 4: Summary of Groundwater Analytical Data - Zones <br />George's Service <br />1680 Durham Ferry Road <br />Tracy, California <br />Wells Date Benzene Toluene Ethyl Total TPH MTBE DIPE ETBE TAME TBA 1,2-DCA EDB Ethanol <br />Benzene Xylenes Gasoline <br />ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L <br />MW-202 07/14/98 3.0 5.0 3.0 10.0 160 ND<2 <br />11/13/98 1.4 1.3 ND<.3 0.8 ND<50 N0<5 ND<5 ND<5 ND<5 ND<50 <br />04/28/99 0.62 0.50 ND<.3 0.32 ND<50 ND<5 <br />09/01/99 0.58 ND<.3 ND<.3 ND<.3 ND<50 ND<5 <br />12/22/99 ND<.5 ND<.5 ND<.5 ND<.5 ND<50 N/A <br />03/31/00 ND<.3 ND<.3 ND<.3 ND<.3 ND<50 ND<2 1 <br />06/20/00 ND<.3 ND<.3 ND<.3 ND<.3 ND<50 ND<2 <br />09/20/00 ND<.3 0.4 0.4 2.0 ND<50 ND<2 <br />12/28/00 ND<.3 ND<.3 ND<.3 ND<.3 ND<50 ND<2 <br />03/06/01 ND<.3 ND<.3 ND<.3 ND<.3 ND<50 ND<2 <br />06/20/01 ND<.3 ND<.3 ND<.3 ND<.3 ND<50 N/A <br />09/07/01 ND<.3 ND<.3 ND<.3 ND<.3 ND<50 ND<2 <br />12/03/01 ND<.3 ND<.3 ND<.3 ND<.3 ND<50 N0<2 <br />02/22/02 ND<.3 ND<.3 ND<.3 ND<.3 ND<50 ND<2 <br />06/05/02 ND<.3 ND<.3 ND<.3 ND<.3 ND<50 ND<2 <br />09/11/02 ND<.3 ND<.3 ND<.3 ND<.3 ND<50 ND<2 <br />12/26/02 ND<.3 ND<.3 ND<.3 ND<.3 ND<50 N/A <br />01/03/04 ND<.3 ND<.3 ND<.3 ND<.3 ND<50 ND<1 <br />11/03/04 ND<.3 ND<.3 ND<.3 ND<.3 ND<50 ND<1 <br />04/11/05 Not Sampled <br />07/20/05 Not Sampled <br />10/30/05 ND<0.5 ND<0.5 ND<0.5 ND<1 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<5 ND<0.5 ND<0.5 <br />01/22/06 ND<0.5 ND<0.5 ND<0.5 ND<1 ND<50 N D<0.5 ND<0.5 ND<0.5 ND<0.5 ND<5 ND<0.5 ND<0.5 <br />04/28/06 Not Sampled <br />08/02/06 Not Sampled <br />10/13/06 ND<0.5 ND<0.5 ND<0.5 ND<1 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<5 ND<0.5 ND<0.5 <br />02/07/07 ND<0.5 ND<0.5 ND<0.5 ND<1 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<5 ND<0.5 ND<0.5 <br />04/13/07 Not Sampled <br />07/16/07 Not Sampled <br />10/10/07 ND<0.5 ND<0.5 ND<0.5 ND<1 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<5 ND<0.5 ND<0.5 <br />01/29/08 ND<0.5 ND<0.5 ND<0.5 ND<1 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<5 ND<0.5 ND<0.5 <br />04/21/08 ND<0.5 ND<0.5 ND<0.5 N D<1 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<5 ND<0.5 ND<0.5 <br />07/09/08 ND<0.5 ND<0.5 ND<0.5 ND<1 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<5 ND<0.5 ND<0.5 <br />10/23/08 Not Sampled <br />01/23/09 ND<0.5 ND<0.5 ND<0.5 ND<1 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<5 ND<0.5 ND<0.5 <br />06/30/09 Not Sampled <br />11/06/09 ND<0.5 I ND<0.5 I ND<0.5 I ND<1 ] ND<50 I ND<0.5 I ND<0.5 I ND<0.5 I ND<0.5 I ND<5 I ND<0.5 I ND<0.5 I <br />04/26/10 Not Sampled <br />10/22/10 ND<0.5 I ND<0.5 I ND<0.5 I ND<1 I ND<50 I ND<0.5 I ND<0.5 I ND<0.5 I ND<0.5 I ND<5 I ND<0.5 I ND<0.5 I <br />04/26/11 Not Sampled <br />04/16/12 Not Sampled <br />10/18/12 Not Sampled <br />01/22/13 Not Sampled <br />04/25/13 Not Sampled <br />08/05/13 Not Sampled <br />10/23/13 Not Sampled <br />06/30/14 Not Sampled <br />09/10/14 Not Sampled <br />11/20/14 Not Sampled <br />01/05/15 Not Sampled <br />04/08/15 Not Sampled <br />07/29/15 Not Sampled <br />10/05/15 Not Sampled <br />01/07/16 Not Sampled <br />04/19/16 Not Sampled <br />08/01/16 Not Sampled <br />11/07/16 ND<0.5 I ND<0.5 I ND<0.5 I ND<1 I ND<50 I ND<0.5 I I I - I - I ND<0.5 <br />ACRONYMS: <br />ug/L = micrograms per liter <br />TPH-G = Total petroleum hydrocarbons as gasoline <br />MTBE = methyl tertiary butyl ether <br />1,2-DCA = 1,2 Dichloroethane <br />DIPE = Diisopropyl ether <br />ETBE = Ethyl tert-Butyl ether <br />TAME = tert-Amyl Methyl ether <br />TBA = ten-Butyl alcohol <br />EDB = ethylene Dibromide <br />Ground Zero Analysis, Inc. 4 of 4 <br /> <br />8/16/2017