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H/S AUTO REPAIR Page 2 of 2 100 mgtkg (* Unknown r Soil samples not taken at two depths within 5 ft.zone(only for Scenario 4 with BioZone) Bioattenuation Zone Thickness C,5 Feet(No BioZone) E e 5 Feet and,10 Feet 10 Feet and,30 Feet C>-30 Feet C 30ft BmZone Compromised TPH>100mg1kq P Unknown 02 Data in Bioattenuation Zone; (--No 02 Data (-02,4% C 02 z 4% Benzene In Groundwater: 1-2:100 Ligil and<1,000 pg1l (*->-1,000 pgA (-Unknown Soil Gas Benzene: (>-85 pg/e and<280 pgtm3 C a 280 Ng/m3 and<85,000 pg/rn' C'>-85,000 p9le and<280,000 pg/m3 C?.280,000 pigh-o" 6 Unknown Soil Gas EthylBenzene: (-z:1,100 Ng/m3 and<3,600 figIm' (-2:3,60D pqrrn3 and<1,100,000 Ngm,3 r>-1,100,000 pg/m'and<3,600,000 ligod' C a 3,600,000 pg/m3 C Unknown Soil Gas Naphthalene: >-93 pg/m3 and<310 lighn" 310 pg/m3 and<93,000 pg/m3 C a 93,000 pglrrO and<310,000 pgIrn' C->310,000 pg/m3 (* Unknown 1 Media Specific Criteria:Direct Contact and Outdoor Air Exposure-The site is considered low-threat fordirect contact and outdoorair exposure if it meets 1,2,or 3 below. NO -LLEAtt SECTION AN SoVESS F— EXEMPTION-The upper 10 feet of soil is free of petroleum contamination r YES N Does the site meet any of the Direct Contact and Outdoor Air Exposure criteria scenarios? YES C« N ADDITIONAL QUESTIONS-Please indicate only those conditions that do not meet the policy criteria: Exposure Type: (-Residential C Commercial r-Utility Worker Petroleum Constituents In Soil: (-s 5 Feet bgs (->5 Feet Nos and S10 Feet bgs (0 Unknown Soil Concentrations of Benzene: (->1.9 mg/kg and S2,8mg/kg (->2.8mg/kg and G82 mg/kg C>82 mg/kg and 512 mg/kg E'>12 mg/kg ands 14 mg/kg 1 14 mg/kg (a Unknown Soil Concentrations of EthylBenzene: (->21 mglkq and 5 32 mg/kg C>32 mgtkg and S 89 mglkg >89 mg/kg and a 134 mg/kg >134 mg/kg and<314 mg/kg >314 mg/kg f Unknown Soil Concentrations of Naphthalene: C>9.7 mgikg ands 45 mg/kg (->45�mg/kg ands 219 mglkg C>219 mg/kg (",Unknown Soil Concentrations of PAN: >rLIZE,mgtkg and 5 0,68 mg/kg (->0.68 mg(kg and o 4.5 mg/kg C->4.5 mglkg Unknown Area of Impacted Soil: Area of Impacted Soil>82 by 82 Feet C Unknown Additional Information Should this case be closed in spite of NOT meeting policy criteria? C YES to N Has this LTCP Checklist been updated for FY 14/15? Es YES N SPELL CHECK Save Form as Partially Completed Save Form as Complete LOGGED IN AS HENDERSONN CONTACT G E0TRACKFR F https://geotracker.waterboards.ca.gov/regulators/screens/closure_policy.asp?global_id=TO,.. 2/24/2015