ARCHIVED REPORTS_XR0008095 CASE 1

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Table 1 Page 2 of 3 Summary of Results of Groundwater Monitoring Cooperatle Data for Chevron Station 9-8632 575 Grant Line Rd ,Tracy, California Well Date of Well Depth to Groundwater TPH-D TPH G B T E X MTBE MTBE LAB Number Sampling Elevation Water Elevation (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) by 8020 by 8260 (Feet) (Feet) (Feet) (ug/L) (ug/L) MW-6A 4/30/2002 2586 634 1962 350 310 ND<0 5 ND<0 5 05 ND<0 5 4 --- LAN 7/30/2002 2686 657 1929 -- - - 10/31/2002 2586 644 1942 ND<50 ND<0 5 ND<0 5 ND<0 5 Nil<0 5 7 --- LAN 1/30/2003 2586 690 1896 ND<50 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 -- 26 66 4/30/2302 2690 666 1924 ND<50 ND<50 NQ<O 5 ND<O 5 ND<O 5 ND<O 6 ND<2 - LAN - 7/30/2002 2590 601 1989 --- --- -- 10/31/2002 2590 678 2012 -- ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<2 LAN 1/30/2003 2590 558 2032 490 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 -- ND<2 4/30/2002 27 53 766 1997 530 1300 27 3 58 72 ND<2 7/30/2002 2753 786 19 67 --- --- --- -- -- - - 10/31/2002 2753 775 1978 -- 690 23 1 85 17 ND<2 - LAN 1/30/2003 2753 836 1917 96 200 12 <0 5 8 8 -- ND<2 SUMP 2 2001 -- 9 18 --- --- ND<50 ND<O 5 ND<O 5 ND<O5 ND<O 5 ND<2 7/31/2001 939 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 N0<2 5 SEQ 10/30/2001 --- 911 --- - ND<50 ND<0 5 ND<0 5 ND<0 5 ND<1 5 ND<2 5 - LAN 1/29/2002 871 --- --- ND<50 062 ND<0 5 ND<0 5 ND 4/30/2002 --- 915 --- --- ND<50 ND<0 5 ND<0 5 ND<0 5 ND<1 5 ND<2 5 -- LAN 7/30/2002 936 --- --- --- --- --- ... 10/31/2002 920 --- --- ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<2 --- LAN 1/30/2003 1598 Insuf lent Water 5 2 00 --- --- --- ND<60 ND<O 5 NQ<O 5 ND<Q 5 ND<Q 5 ND<2 SEQ 5 7/31/2001 -- --- --- ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<2 5 SEQ 10/30/2001 - --- ND<50 ND<0 5 ND<0 5 ND<0 5 ND<1 5 ND<2 5 LAN 1/29/2002 -- --- --- -- ND<50 ND<0 5 ND<0 5 ND<0 5 ND<1 5 ND<2 5 --- LAN 4/30/2002 -- ND<50 ND<0 5 ND<0 5 ND<0 5 ND<1 5 ND<2 5 LAN K IA BP ARC01111941Quarterlyll DTR 03/11194 GWTables iQ03