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_CJTY OF STOCKTON REDET'P.LOPMENT AGENCY Page 2 of 2 Does the site meet any of the Petroleum Vapor Intrusion to Indoor Air specific criteria scenarios? r YES C' NO ADDITIONAL QUESTIONS-Please indicate only those conditions that do not meet the policy criteria: Soil Gas Samples: r No Soil Gas Samples r Taken Incorrectly Exposure Type: r Residential r Commercial Free Product: C In Groundwater r In Soil r Unknown TPH in the Bioattenuation Zone: C>_100 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: C-<5 Feet(No BioZone) r z 5 Feet and<10 Feet r>_10 Feet and<30 Feet r>_30 Feet r 30ft BioZone Compromised TPH>100mg/kg G Unknown 02 Data in Bioattenuation Zone C No 02 Data r 02<4% r 02 2:4% Benzene in Groundwater: C->_100 Ng/I and<1,000 Ng/I r z 1,000 Ng/I r Unknown Soil Gas Benzene: r i 85 Ng/m3 and<280 Ng/m3 r 2:280 Ng/m3 and<85,000 Ng/m3 r>85,000 Ng/m3 and<280,000 Ng/m3 r i 280,000 Ng/m3 r Unknown Soil Gas EthylBenzene: r s 1,100 Ng/m3 and<3,600 Ng/m3 r>_3,600 Ng/m3 and<1,100,000 Ng/m3 r z 1,100,000 Ng/m3 and<3,600,000 Ng/m3 r 2:3,600,000 Ng/m3 r Unknown Soil Gas Naphthalene: r z 93 Ng/m3 and<310 Ng/m3 r>_310 Ng/m3 and<93,000 Ng/m3 r 2:93,000 Ng/m3 and<310,000 Ng/m3 r>_310,000 Ng/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 NO if it meets 1,2,or 3 below.-CLEAR SECTION ANSWERS EXEMPTION-The upper 10 feet of soil is free of petroleum contamination r YES G NO Does the site meet any of the Direct Contact and Outdoor Air Exposure criteria scenarios? r YES 6 NO ADDITIONAL QUESTIONS-Please indicate only those conditions that do not meet the policy criteria: Exposure Type: C Residential r Commercial r Utility Worker Petroleum Constituents in Soil: C-s 5 Feet bgs r >5 Feet bgs and<_10 Feet bgs r Unknown Soil Concentrations of Benzene: r >1.9 mg/kg and 5 2.8 mg/kg r>2.8 mg/kg and 5 8.2 mg/kg r >8.2 mg/kg and 5 12 mg/kg r>12 mg/kg ands 14 mg/kg r>14 mg/kg r Unknown Soil Concentrations of EthylBenzene: C >21 mglkg and 5 32 mg/kg r>32 mg/kg ands 89 mg/kg r >89 mg/kg and 5 134 mg/kg r>134 mg/kg and<_314 mg/kg r>314 mg/kg r Unknown Soil Concentrations of Naphthalene: C->9.7 mg/kg and 5 45 mg/kg r>45 mg/kg and 5 219 mg/kg r >219 mg/kg .r Unknown Soil Concentrations of PAH: C>0.063 mg/kg and:5 0,68 mg/kg r>0.68 mg/kg and 5 4.5 mg/kg r>4.5 mg/kg r Unknown Area of Impacted Soil: C Area of Impacted Soil>82 by 82 Feet G Unknown Additional Information Should this case be closed in spite of NOT meeting policy criteria? r YES R NO SPELL CHECK Save in Progress Save as Final LOGGED IN AS HENDERSONN CONTACT GEOTRACKER HELP https://geotracker.waterboards-ca-gov/regulators/screens/closure_policy.asp?global_id=TO... 6/21/2013 I A - I