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( 1 <br /> Helen Higgins -3- May 27, 2010 <br /> Claim No. 11775 <br /> IV. MAXIMUM DOCUMENTED CONTAMINANT CONCENTRATIONS <br /> Contaminant Soil m /k Water (ug/L WQOs <br /> Maximum Latest Maximum Latest (ug/L) <br /> I <br /> Nov 09 <br /> TPH-g NA NA 1,410 230 5 <br /> TPH-d NA NA NA NA 56 - <br /> Benzene NA!' NA 39 1.2 0.15 <br /> Toluene NA NA 6 <0.5 42 <br /> Eth (benzene NA NA 11 <0.5 29 <br /> Xylenes NA NA 18 1.2 17 <br /> MTBE NA NA 0.73 <0.5 5 <br /> TBA NA NA NA <20 12 <br /> 1,2-DCA NA NA 57 4.6 0.4 j <br /> Lead NA NA NA -NA 15 <br /> PCE NA NA 3.6 0.74 0.06 <br /> TCE NA NA 27 <5 0.8 <br /> NA Not Analyzed,Not Applicable,or Data Not Available <br /> WQO : Water Quality Objectives <br /> FP Free phase product in site wells <br /> V. FREE PRODUCT: none identified <br /> VI. SOIL AND GROUNDWATER REMEDIATION i <br /> A. Soil Excavation.: unknown volume <br /> B. In-Situ Soil/ Groundwater Remediation: none identified <br /> C. Groundwater Trends: <br /> • Benzene trends are shown below <br /> S+ <br /> BEtRsul,ZEVE <br /> 1oa q <br /> S 8- <br /> : <br /> 14 �� <br /> S. § icII,i, <br /> c <br /> .'`- <br /> VII. SENSITIVE RECEPTOR SURVEY: three wells identified within '/ mile of the site <br /> VIII. COMMENTS AND JUSTIFICATION FOR RECOMMENDED ACTION <br /> California Environment$/Protection.Agency <br /> ��Recveled Paper <br />