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Case Closure .Summary <br />Leaking Underground Fuel Storage Tank Program <br />III Release and Site Characterization Information continued <br />,. , <br />page <br />2 of 2 <br />Maximum Documented Contaminant Concentrations - - Before and After <br />Cleanup <br />m Contaminant <br />Contaminant Soil {ppm) Water (ppm) <br />Soil <br />Before <br />(ppm) <br />After <br />.Water <br />Before <br />(ppm) <br />After <br />Before � After Before .After <br />110. <0.05 Ethyl -benzene <br />1 <br /><0.005 <br />.890 <br /><.0005 <br />TPH (Gas) 2,3Q0 20 <br /><0.05 Xylene <br />120 <5.0 <OA5 . <br />35 <br /><0.005 <br />1.0 <br /><.0005 <br />TPH (Diesel) <br /><0.005 .340 <.005MTBE <br />6.3 <br />0.095 <br /><0.005 <br /><.001 <br /><.001 <br /><.0005 <br />Benzene <br />.<0.005 <.0005 1,2 -DCA <br /><0.005 <br />X0.005 <br /><.0005 <br />� <br />Toluene .160 <br />Comments:.Soil Before data for TPH gas and BTEX is from MW -2-15' on 11/29/00 and for TPH diesel, MTBE <br />and 1,2 -DCA is from UST -4 on 11!5!03. This area was over -excavated and resampled on 11/12/03 with non - <br />detect results. Soil After data is from MW -9-15 on 6130105. Water Before data is from MW -2 which was <br />destroyed in October 2003 during over -excavation of contaminated soil. Water After data is from MW -8 on <br />7121109 except 'MTBE and 1,2 -DCA are from MW -8 on 12112108. <br />IV. Closure <br />Does completed corrective action protect existing beneficial uses.per Regional Board Basin Plan? Yes <br />Does completed corrective action protect potential beneficial uses per Regional Board Basin Plan? Yes <br />Does corrective action protect public health for current land use? Yes <br />Site management requirements: None <br />Should corrective action be reviewed if land use changes? Yes <br />Have the MonitoringNapor wells been decommissioned? yes Number Decommissioned: 10 <br />Number retained: 0 <br />List enforcement actions taken: NORs. 6-29-2000 & 10-17-2007 <br />List enforcement actions rescinded: None <br />V. Local Agency Re resen#ative Data <br />Name: Donna Heran <br />Signature: ,,,,, , „ _ - ---- <br />V1. <br />V1. Central Valley Regional Water Quali <br />Date Submitted to RB: 22 Oct 2009 <br />RB Staff: James L.L. Barton <br />Title: Engineering Geolo ist <br />e: Director of Environmental Health Department <br />Date: <br />Control Board (RB) Notification <br />Response Date: 03 Dec 2009 <br />Response: concurrence to NFA <br />VII. Additional Comments, Data, , etc. <br />We11s destroyed March 11, 2014. Report of destruction received April 20, 2010. <br />This document and the related CASE CLOSURE LETTER shall be retained by the lead agency as part of the <br />official site file. <br />Mil <br />