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PUBLIC WORKS Page 2 of 2 <br /> f• No Soil Gas Samples f Taken Incorrectly <br /> Exposure Type: <br /> r Residential r Commercial <br /> Free Product: <br /> r In Groundwater r In Soil r Unknown <br /> TPH in the Bioaftenuadon Zone: <br /> C z 100 mgMg r Unknown r Soil samples not taken at two depths within 5 R.zone(only for Scenario 4 with BioZone) <br /> Bioattenuation Zone Thickness: <br /> r<5 Feet(No BioZone) r z 5 Feet and<10 Fast r z 10 Fast and<30 Feet r z 30 Feet ('3Oft BioZone Compromised TPH>1 OOmgAg r Unknown <br /> 02 Data in Bioattenuation Zone: <br /> r No OZData `-02<4% r 02x4% <br /> Benzene In Groundwater: <br /> r z 100 pg/I and<1,000 pg/I Ife'z1,0O0 pg/I r Unknown <br /> Soil Gas Benzene: <br /> r z 05 pg/m3 and<200 pg/m3 r z 280 pg/m3 and<85,000 pg/m3 r z 85,000 pg/m3 and<280,000 pg/m3 r z 280,000 pg/m3 +r'Unknown <br /> Soil Gas EthylBenzene: <br /> r>_1,100 pg/m3 and<3,800 pg/m3 r z 3,800 pg/m3 and<1,100,000 pghn3 r z 1,100,000 pg/m3 and<3,600,000 Weis r 2 3,800,000 pg/m3 r Unknown <br /> Soil Gas Naphthalene: <br /> r z 93 pg/m3 and<310 pg/m3 r z 310 pg/m3 and<93,000 pg/m3 r 2 93,000 pg/m3 and<310,000 pg/m3 r x 310,000 pg/m3 CItriknown <br /> Nit meets lPen 2.oa Ic c Criteria: Iretow-Direct Contact and Outdoor Air Exposure The site is consideredlow-threatfordirect contactand outdoorairexposura �S <br /> R SECTION ANSWERS <br /> E%EMP- 10 feet.. Is VES '91NO <br /> Ia <br /> AddWonal Information <br /> Should tms rase be closed in spot of NOT meeting policy onions? r VES r NO <br /> SPELL CHECK <br /> Sava In Progress - , <br /> LOGGED IN AS HENDERSONN CONTACT GEOTRACKER HELP <br /> https:Hgeotracker.waterboards.ca.gov/regulators/screens/closure_policy.asp?global_id=TO... 7/11/2013 <br />