ARCHIVED REPORTS XR0008631 - Laserfiche WebLink

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REMEDIAL ACTION PLAN 160.5 South EI Dorado Street,Stoddon Caldorno The proposed emission rates are based on the following assumptions • flow rate is 250 scfm • maximum concentration of TPH, as gasoline, in the process stream is equivalent to the lower explosive limit for gasoline which is 12,000 parts per million by volume (ppmv) or 46,000 mg/m3 in the thermal oxidizer mode and 3,000 ppmv or 11 ,500 Mg/M3 in the catalytic oxidizer mode • benzene concentration is 2 76 percent of the TPH concentration, or 1270 Mg/M3 The calculations and assumptions of the hydrocarbon extraction and emission rates are included in Appendix E 5 3 Schedule Following approval of this RAP, Aegis will prepare applications for Authority-to-Construct and Permit-to-Operate from the SJVUAPCD While the SJVUAPCD is reviewing the permit applications, Aegis will prepare the system design and construction specifications for contractor bidding Following submittal of the permit applications and preparation of a system design, the mayor equipment will be ordered When equipment availability is confirmed by Exxon, Aegis will solicit contractor bids, recommend a contractor, and coordinate execution of the contract 5 4 Vapor Extraction System Monitonng Vent system startup and operation will be performed consistent with the permits from the SJVUAPCD Initially, an emission verification test will be performed to verify that emissions are within the permit requirements During the first month of operation, soil vapor influent and effluent (thermal/catalytic oxidizer discharge) air samples will be collected weekly Air samples will then be collected monthly until the system is shut off The samples will be analyzed for TPH, as gasoline, and BTEX by a state-certified analytical laboratory The influent and effluent concentrations will also be monitored on site with a flame ionization detector, explosimeter, or similar device I I 91 044A RAP 8