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Canepa ' s Car Wash -3- April 21 , 2008 <br /> Claim No . 8449 <br /> B . In -Situ Soil RernE: d ' % .,: c:` <br /> • METHOD : soi : . <. ic ; extraction <br /> • DURATION : " 01-P, `.:�. Fough present <br /> MASS OF FYD ; C :.A .-SOi1S (vapor phase') RE := ' (.' Y r ; 1 , 058 pounds of <br /> TPH-G <br /> C . Groundwater Rer;, e �,'A"Ab ; n : <br /> • METHOD : ground.v�te .r extraction <br /> • DURATION : Nos 0 + "i-ough present <br /> • VOLUME OF GR01JI'� 7WATs= R EXTRACTED : 3 , 474 , 22S gallons <br /> • MASS OF HYDROCARBONS REMOVED : 693 pounds of TPH -G <br /> D . Groundwater Trend ::: : <br /> • Benzene trends a ; ; slown below <br /> Claim 8449 <br /> 120000 <br /> 100000 - <br /> 80000 <br /> 60000 -- - - MW-2 <br /> v <br /> 40000 SVE 4 <br /> m 20000 <br /> 0 <br /> M n V V (n (O (O r <br /> O O O O O O O Oco <br /> O O <br /> C C C C C <br /> Time <br /> VII . SENSITIVE RECEPTOR SURVEY: no wells identified within % mile of the site <br /> VIII . COMMENTS AND JUSTIFICATION FOR RECOMMENDED ACTION <br /> A. Site Description : former retail gasoline station , car wash <br /> B . Site History: the extent of groundwater contamination is defined <br /> C . Groundwater Monitoring Summary: strong monitoring history <br /> D . Remediation Summary : soil vapor and groundwater extraction <br /> E . Contaminant Exposure Pathway Evaluation : unknown <br /> California Environmental Protection Agency <br /> Vo Recycled Poper , <br />