ARCHIVED REPORTS_NOTICE OF INTENT FOR INSTALLATION, OPERATION AND MAINTENANCE OF AN OZONE INJECTION GROUNDWATER REMEDIATION SYSTEM

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' Project No.59183-06-02 July 2,2009 Page 1 of 2 TABLE 4 SUMMARY OF GROUNDWATER ANALYTICAL DATA-SUPPLEMENTAL SAMPLING PARAMETERS t FORMER VINTAGE CAR WASH 601 EAST MINER AVENUE STOCKTON,CALIFORNIA WELL' XAVALENT NUMBER DATE ACETONE BROMATE FCHROMIUM DISSOLVED OXYGEN' (NP/1) (mfg) (U!=/1) (mg/1) ' Upgradient Observation Well MW-7 11/10/2008 <5.0 <0.0010 6.9 -- ' MW-7 1/8/2009 <10 <0.0010 8.8 - MW-7 2/9/2009 QO <0.0010 6.7 4.21 MW-7 2/17/2009 <10 <0.0010 10 4.09 MW-7 2/23/2009 <2.0 <0.0010 8.2 4.20 ' MW-7 3/2/2009 <10 <0.0010 9.8 4.17 MW-7 3/9/2009 <10 <0.0010 8.8 4.39 MW-7 3/17/2009 <10 <0.0010 9.1 4.44 ' MW-7 3/23/2009 <10 <0.0010 10 4.11 MW-7 3/30/2009 <2.0 <0.0010 11 4523 MW-7 4/15/2009 <10 <0.0010 7.1 4.10 ' MW-7 5/11/20092 - - --- -- Injection Field Wells ' MW-1 11/10/2008 170 <0.0010 <1.0 0.18 MW-1 1/8/2009 <50 <0.0010 4.0 MW-1 2/9/2009 <100 <0.0010 <I.0 0.17 ' MW-1 2/17/2009 <10 <0.0010 <1.0 0.09 MW-1 2/23/2009 590 <0.0010 <I.0 0.22 MW-1 3/2/2009 <10 <0.0010 <1.0 0.10 MW-1 3/9/2009 <50 <0.0010 <1.0 0.17 ' MW-1 3/17/2009 <10 <0.0010 <1.0 0.12 MW-1 3/23/2009 <10 <0.0010 <1.0 0.09 MW-1 3/30/2009 1200 <0.0010 <1.0 6,923 ' MW-1 4/15/2009 <20 <0.0010 <1.0 0.29 MW-1 5/11/2009 <10 <0.0010 <I.0 0.27 ' MW-3 11/10/2008 12 <0.0010 <1.0 0.26 MW-3 1/8/2009 <10 <0.0010 <1.0 MW-3 2/9/2009 <10 <0.0010 <1.0 0.44 ' MW-3 2/17/2009 <10 <0.0010 <I.0 0.09 MW-3 2/23/2009 110 <0.0010 <1.0 0.24 MW-3 3/2/2009. <10 <0.0010 Q.0 0.10 ' MW-3 3/9/2009 <10 <0.0010 <1.0 0.13 MW-3 3/17/2009 <10 <0.0010 <1.0 0.10 MW-3 3/23/2009 <10 <0.0010 Q.0 0.11 MW-3 3/30/2009 70 <0.0010 <1.0 6.523 ' MW-3 4/15/2009 <10 <0.0010 <1.0 0.16 MW-3 5/11/2009 <10 <0.0010 <1.0 0.15 ' GWX-1 11/10/2008 150 <0.0010 <1.0 0.29 GWX-1 1/8/2009 <200 <0.0010 Q.0 GWX-1 2/9/2009 <200 <0.0010 <1.0 0.20