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H/S AUTO REPAIR Page 2 of 2 Exposure Type C Residential C Commercial Free Product C In Groundwater In Soil r Unknown TPH in the Biriattenuation Zone 100 mg/kg Unknown f Soil samples not taken at two depths within 5 ft.zone(only for Scenario 4 with EhoZone) Bioattenuation Zone Thickness 5 Feet(No BioZone) r z 5 Feet and<10 Feet 10 Feet and<30 Feet z 30 Feet rSoft HioZone Compromised TPN>100mgfkg Unknown 02 Data in Bloattenuation Zone: No 0,Data (- Oa<4% C Oz 4% Benzene in Groundwater: z 100 pg/I and<1,000 pg/I >-1,000 pg/I Unknown Soil Gas Benzene: C->85 pg/m3 and<280 pg/m3 C>280 pg/M3 and<85,000 pg/M3 C>-85,000 pg/M3 and<280,000 pg/m3 >-280,000 pg/m3 Unknown Soil Gas EthylBenzone I 1,100 pgfm3 and<3,600 pglm3 C>-3,600 pg/m3 and<1,100,000 pg/m3 r•a 1,100,000 pgtm3 and<3,600,000 pglm3 3,600,000 pg/m' Unknown Soil Gas Naphthalene >93 pgIM3 and<310 pglm3 f z 310 pg/m3 and<93,000 pg/m3 r->-93,000 pglm3 and<310,000 pg1m3 r>-310,000 pglm3 (0-Unknown 3.Media Specific Criteria:Direct Contact and Outdoor Air Exposure-The site is considered low-threat for direct contact and outdoor air exposure FNO if it meets 1,2,or 3 below.-CLEAR SECTION ANSWERS EXEMPTION-The upper 10 feet of soil is free of petroleum contamination YES No Does the site meet any of the Direct Contact and Outdoor Air Exposure criteria scenarios? C YES NO ADDITIONAL QUESTIONS-Please indicate only those conditions that do not meet the policy criteria: Exposure Type: Residential (-Commercial r- Utility Worker Petroleum Constituents in Soil 5 Feet bgs (->5 Feet bgs and s10 Feet bgs (*- Unknown Soil Concentrations of Benzene C>1.9 mg/kg and 5 2,8 mg/kg C>2.8 mg/kg ands 8.2 rmj1kq r >8,2 mglkg ands 12 mgtkg C >12 mglkg and r 14 mglkg C>14 mg/kg Unknown Soil Concentrations of EthylBenzene: C>21 mg/kg ands 32 mg/kg C>32 mg/kg ends 89 mg/kg (->89 mglkg and 5 134 mg/kg C >134 mg/kg ends 314 mg/kg r>314 mg/kg C* Unknown Soil Concentrations of Naphthalene r>9.7 mg/kg and n 45 mgfkg C>45 mglkg ands 219 mg/kg C>219 mg/kg 6"Unknown Soil Concentrations of PAH: ('>0,063 mg/kg ands 0,68 mg/kg C>0.68 mg/kg ands 4.5 mglkg r>4.5 mg/kg s Unknown Area of Impacted Soil: Area of Impacted Soil>82 by 82 Feet ("Unknown [Adltiti...1 Information Should this case be closed in spite of NOT meeting policy criteria? r YES ra NO SPELL CHECK Save in Progress Save as Final LOGGED IN AS MAMASITALIGA CONTACT GEOTPAC9R HELP https:Hgeotracker.waterboards.ca.gov/regulators/screens/closure_policy.asp?global—id=TO... 7/22/2013