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WEST CLAY PROPERTY Page 2 of 2 <br /> r s 250 Feet C >250 Feet and<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 r' 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 /> t' No Soil Gas Samples C Taken Incorrectly <br /> Exposure Type: <br /> r Residential r Commercial <br /> Free Product: <br /> r In Groundwater C- In Soil Unknown <br /> TPH in the Bioattenuation Zone: <br /> r'2 100 mg/kg t' Unknown r Soil samples not taken at two depths within 5 ft.zone(only for Scenario 4 with BioZone) <br /> Bioattenuation Zone Thickness: <br /> r <5 Feet(No BioZone) r-2 5 Feet and<10 Feet r 2 10 Feet and<30 Feet C'2 30 Feet C 30ft BioZone Compromised TPH>100mg/kg Unknown <br /> 02 Data in Bioattenuation Zone: <br /> r' No 02 Data t^02<4% 02 2:4% <br /> Benzene in Groundwater: <br /> C 2 100 pg/I and<1,000 pg/I f'2 1,000 pg/I C Unknown <br /> Soil Gas Benzene: <br /> r' 2 85 Ng/m3 and<280 pg/m3 r 2 280 Ng/m3 and<85,000 pg/m3 r'2 85,000 pg/m3 and<280,000 pg/m3 C 2 280,000 pg/m3 r: Unknown <br /> Soil Gas EthylBenzene: <br /> C->_1,100 pg/m3 and<3,600 Ng/m3 >_3,600 Ng/m3 and<1,100,000 pg/m3 2 1,100,000 pg/m3 and<3,600,000 Ng/m3 2 3,600,000 Ng/m3 r'Unknown <br /> Soil Gas Naphthalene: <br /> C >_93 Ng/m3 and<310 pg/m3 C>_310 Ng/m3 and<93,000 pg/m3 r'>_93,000 pg/m3 and<310,000 pg/m3 r'>_310,000 Ng/m3 f' 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 sEcnON ANSWERS <br /> EXEMPTION-The upper 10 feet of soil is free of petroleum contamination r' YES NO <br /> Does the site meet any of the Direct Contact and Outdoor Air Exposure criteria scenarios? YES r' NO <br /> 3,1-Maximum concentrations of petroleum constituents in soil are less than or equal to those listed in the following tableLf INK7 for the specified depth r: YES r- NO <br /> below ground surface. <br /> Additional Information <br /> Should this case be closed in spite of NOT meeting policy criteria? C YES G NO <br /> Has this LTCP Checklist been updated for FY 13/14? t: YES r_ NO <br /> SPELL CHECK <br /> Save Form as Partially Completed Save Form as Complete <br /> LOGGED IN AS HENDERSONN CONTACT GEOTRACKER HELP <br /> https://geotracker.waterboards.ca.gov/regulators/screens/closure_policy.asp?global_id=TO... 6/27/2014 <br />