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WEST CLAY PROPERTY Page 2 of 2 r Residential r Commercial Free Product r In Groundwater r In Soil r Unknown TPH in he Bioattenuation Zone: F>_1 00 mg/kg r Unknown r Soil samples not taken at two depths within 5 ft.zone(only for Scenario 4 with BioZone) Bioattenuation Zone Thickness: r' <5 Feet(No BioZone) r>_5 Feet and<10 Feet r>10 Feet and<30 Feet r a 30 Feet r 30ft BioZone Compromised TPH>100mg/kg r Unknown 02 Data in Bioattenuation Zone: G No 02 Data r 02<4% r 02>4% Benzene in Groundwater: C>_100 pg/I and<1,000 pg/l t•>1,000 pgA r Unknown Soil Gas Benzene: C>_85 pg%m3 and<280 pg/m3 r>280 pg/m'and<85,000 pg/ml r z 85,000 pg/m1 and<280,000 11 r>_280,000 pg/m3 r'Unknown Soil Gas EthylBenzene: (_>_1.100 pg/m3 and<3,600 pg/m3 r>3,600 pg/m3 and<1,100,000 pg/m3 r>1,100,000 pg/m3 and<3,600,000 pg/m3 r>_3,600,000 pg/m3 r' Unknown Soil Gas Naphthalene: C>93 pg/m3 and<310 pg/m3 r>310 pg/m3 and<93,000 pg/m3 r>93,000 pg/m3 and<310,000 pg/m3 r>310,000 pg/m3 R Unknown 3.Media Specific Criteria:Direct Contact and Outdoor Air Exposure-The site is considered low-threat for direct contact and outdoor air exposure if it meets 1,2,or 3 below. YES -CLEAR SECTION ANSWERS EXEMPTION-The upper 10 feet of soil is free of petroleum contamination r YES 0 N Does the site meet any of the Direct Contact and Outdoor Air Exposure criteria scenarios? r YES r N 3.1-Maximum concentrations of petroleum constituents in soil are less than or equal to those listed in the following table(LINK)for the specified depth below ground surface. r YES r NC Additional Information Should this case be dosed in spite of NOT meeting policy cntera) r YES G N Has this LTCP Checklist been updated for FY 14/15? r YES r N SPELL CHECK save Form as Partially Completed I save Form as Complete LOGGED IN AS HENDERSONN CONTACT GEOTRACKER F ( https://geotracker.waterboards.ca.gov/regulators/screens/closure_policy.asp?global_id=TO... 2/27/2015