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WEST CLAY PROPERTY Page 2 of 2 <br /> Nearest Surface Water Body(From Plume Boundary): <br /> r s 250 Feet C >250 Feet ands 1,000 Feet C Unknown <br /> 2.Media Specific Criteria:Petroleum Vapor Intrusion to Indoor Air-The site is considered low-threat for the vapor-intrusion-to-air pathway if site- NO <br /> specific conditions satisfy items 2a,2b,or 2c-CLEAR SECTION ANSWERS <br /> EXEMPTION-Active Commercial Petroleum Fueling Facility C YES r' NO <br /> Does the site meet any of the Petroleum Vapor Intrusion to Indoor Air specific criteria scenarios? C YES r NO <br /> ADDITIONAL QUESTIONS-Please indicate only those conditions that do not meet the policy criteria: <br /> Soil Gas Samples, <br /> G No Soil Gas Samples C Taken Incorrectly <br /> Exposure Type: <br /> (- Residential t: Commercial <br /> Free Product: <br /> C In Groundwater C In Soil C Unknown <br /> TPH in the Bioattenuation Zone: <br /> z 100 mglkg C- Unknown C Soil samples not taken at two depths within 5 K zone(only for Scenario 4 with BioZone) <br /> Bioattenuation Zone Thickness: <br /> C•' <5 Feet(No BioZone) C z 5 Feet and<10 Feet f z 10 Feet and<30 Feet C >_30 Feet C 30ft BioZone Compromised TPH>100ni Unknown <br /> 02 Data in Bioattenuation Zone: <br /> No 02 Data C' OZ<4% l' OZ z 4 <br /> Benzene in Groundwater <br /> C z100 pg/I and<1,000 pg/l z 1,000 pg/1 t^ Unknown <br /> Soil Gas Benzene <br /> f'z 85 pg/m3 and<280 pg/m3 r z 280 pg/m3 and<85,000 pg/m3 z 85,000 pg/m3 and<280,000 pg/m3 >_280,000 pg/M3 Unknown <br /> Soil Gas EthylBenzene: <br /> C >_1,100 pg/m3 and<3,600 pg/m3 C z 3,600 pg/m3 and<1,100,000 pg/m3 z 1,100,000 pg/m3 and<3,600,000 pg/m3 C z 3,600,000 pg/m3 F Unknown <br /> Soil Gas Naphthalene <br /> C z 93 pglm3 and<310 pg/m3 �z 310 pg/m3 and<93,000 Ng/m3 C z 93,000 pg/m3 and<310,000 Pg/M3 r z 310,000 pg/m3 (* Unknown <br /> 3.Media Specific Criteria:Direct Contact and Outdoor Air Exposure-The site is considered low-threat for direct contact and outdoor air exposure YES <br /> if it meets 1,2,or 3 below.-CLEAR SECTION ANSWERS _ <br /> C YES G NO <br /> EXEMPTION-The upper 10 feet of soil is free of petroleum contamination <br /> Does the site meet any of the Direct Contact and Outdoor Air Exposure criteria scenarios? <br /> (: YES r' NO <br /> 3.1-Maximum concentrations of petroleum constituents in soil are less than or equal to those listed in the following table(LINK)for the specked depth G YES C NO <br /> below ground surface. - _- --- <br /> Additional Information <br /> r YES r NO <br /> Should this case be closed in spite of NOT meeting policy criteria? <br /> SPELL CHECK <br /> Save in Progress Save as Final <br /> CONTACT GEOTRACKER HELP <br /> LOGGED IN AS MCCARTNEYV <br /> https://geotracker.waterboards-ca-gov/regulators/screens/closure_policy.asp?global_id=TO... 7/26/2013 <br />