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PS Marina' s 5 -3- January 10 , 2011 <br /> Claim 3668 <br /> B . In -Situ Soil/ Groundwater Remediation : ozone injection pilot test has been <br /> approved by LOP . <br /> C . Groundwater Trends : MTBE and TBA trends are shown below, source area <br /> and down gradient , respectively. <br /> Results for MW7 <br /> 160000 <br /> 140000 - - <br /> 120000 - ) <br /> ._ <br /> I <br /> co <br /> 100000 - ---i -- - - — -- i I . <br /> 1 <br /> eooao - - <br /> 60000 �--_ _ -- - <br /> i <br /> 40000 - -----I — `-- — <br /> z0000T - --- r I - — --- �--- <br /> ALAIN <br /> a4 al <br /> L_ TERT-BUTYL ALCOHOL (TBA) a METHYL-TERT_BUTYL ETHER (MTBE) _ <br /> Results for MW6 <br /> 70001 1 <br /> - <br /> 6000 - -- _+ - ---- I- �J �-- ---- --- <br /> IF <br /> ^ 6000 "�-� - � .. Nl - <br /> I I F <br /> 4000 IN <br /> I— � - <br /> y 3000 L { - <br /> 2000 F <br /> 1000 -- � <br /> s <br /> TERT-BUTYL ALCOHOL (TBA) -- - METHYL-TERT-BUTYL ETHER (MTBE) <br /> VII . COMMENTS AND JUSTIFICATION FOR RECOMMENDED ACTION <br /> A. Site Description : active retail gasoline station <br /> B. Site History : the extent of groundwater contamination is defined <br /> C . Groundwater Monitoring Summary: strong monitoring history <br /> D. Remediation Summary: ozone injection pilot test is pending <br /> E . Contaminant Exposure Pathway Evaluation : unknown <br /> California Enfironmantal Protecdon Agency <br /> �d <br /> Recycled Paper - <br />