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''Treatment and Disposal of Affected Ma nal (Continued) - <br /> Material Amount(Include units) Action (Treatment or Disposal w/Destination) Date <br /> Tank(s) 2-10,000 Gallon Recycle/Disposal-Ericson,Inc,Richmond,CA <br /> 1 -588 0 Gallon 4115198 <br /> Piping Approx 280 ft. Disposal-Ericson,Lac,Richmond,CA 4115198 <br /> Free Product <br /> Soil (total) See Previous Section <br /> Groundwater NIA <br /> Barre s <br /> III. Release and Site Characterization Information (Continued) <br /> Maximum Documented Pollutant Concentrations -- Before and After Cleanup <br /> Contaminant Soil m Water (ppMLI Contaminant Soil m Water m <br /> Before After Before After Before F After Before After <br /> TPH (Gas) 25,000 26 220 ND Xylene 2,900 29 23 ND <br /> TPH (Diesel) 13 13 170 ND Ethylbenzene 530 050 29 ND <br /> Benzene 270 077 76 ND Oil and Grease ND ND ND ND <br /> Toluene 2,200 33 27 ND Heavy metals-lead 0 0096 0 0096 ND ND <br /> MTBE ND ND ND ND EPA 8260 ND ND ND ND <br /> Comments (Depth of Remediation, etc ) <br /> Primary Source removed Secondary source removed(3,180 Cubic Yards) <br /> OVFuel dispensing facilities removed 5/98,Non-operating-Vacant site <br /> Closure <br /> Does completed corrective action protect existing beneficial uses per the Regional Board Basin Plans Yes No <br /> Does completed corrective action protect potential beneficial uses per the Regional Board Basin Plans Yes No <br /> Does corrective action protect public health for current land use? Yes No <br /> Site management requirements ProMrly destroy all remaining monitonng wells in accordance with California <br /> Well Satndards Bulletin-74-90 <br /> Should corrective action be reviewed if land use changes? Yes No <br /> Monitoring wells Decommissioned Yes / No Number Decommissioned NIA I Number Retained 4 <br /> List enforcement actions taken None <br /> List enforcement actions rescinded None <br /> V. Technical Reports, Correspondence ETC. That This Closure Recommendation Was <br /> Based Upon <br /> Title <br /> Date <br /> VI Additional Comments Data etc. <br /> This document and the related CASE CLOSURE LETTER shall be retalned by the lead avencv as oart of the of lcial site file PAGFTEP4 <br />