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u <br /> k - <br /> s <br /> recovery of the petroleum hydrocarbons, see F�.gure 5A. <br /> The well manifold will be constructed of Sch 40 PVC and will <br /> connect. to a 55 gallon condensate drum then into low twu the vapor <br /> which will have a common Pump bypass. From the blowers, <br /> stream will go through another 55 gallon condensate drum prior to <br /> a 10,000 pound cansiter of activated charcoal- <br /> 0 <br /> harcoal. This canister will <br /> exhaust intamtle sorts willcbevated locatedarcoal prior tobcondensateaced drum 1I, <br /> ROME series. Sample P um at the exhaust of <br /> the pump bypass, at the influent of each pump, <br /> and prior to . <br /> each Dump, at the exhaust of the pump YP <br /> condensate drum 2, at the influent and effluent of the 10,000 <br /> pound sate ster, and at the effleent of each of the 85 pound tub <br /> scrubs, see Figure 5B. <br /> Weekly monitoring of the exhausts of the 10,OD0 pound dumpalon� with <br /> scrubs will be performed for.breakthrough, <br /> 85 pound tub drums, <br /> stem. <br /> and <br /> the vapor and vacuum readings at the wells, <br /> pumps to document the effectiveness of the sy <br /> Bi-monthly . tedlaw bag samples will be abt fined from the AndPoa <br /> extraction lelwill be obtained oftthe exhaof ustaOf t 10,000 Pote drum 1- <br /> o ; <br /> monthly same 'R_istern Geo-Engineers 1 <br /> dumgster. These samples will be analyzed by <br /> ^ � using DHS headspace mQthod fQr Total `uel Hydrocarbons and STE]t <br /> (GC-FID) : Appendix.:P ' Leaking Underground Fuel Tank Field.Manual. <br /> State of.CalifonY'-s 'Water Resources Control Board, <br /> May, 1388• . <br /> ill <br /> aine <br /> A monthly influent and effluent <br /> ussamples <br /> Awmethods602efobrLBTEXa and <br /> analyzied by Chemtech Lab eu0jig <br /> 1 <br /> Once breakthrough occurs between the 10,000 pound dumpster and the , <br /> 3. <br /> 85 pound tub scrub, a costemtshutmdown, asdescribed <br /> 10,000wiPound 1 <br /> undertaken and the sY <br /> aki <br /> or <br /> osal or <br /> vinati <br /> series, a total of 6, <br /> dumpster is sent to carerbe mademasfto the peconomics rotucont o of j <br /> A determination will two parallel sets t <br /> use of the 10,000 pound dumPster or placing to com lete the vapor <br /> 85 pound tub scrubs inp <br /> extraction for soil remediation. <br /> VAPOR EXTRACTION PROCEEDURES <br /> the wells, to be used for vapor extraction, <br /> Prior to manifolding ethylene liner will be <br /> to the treatment compound, a y mil poly ainst <br /> positioned so as to completely cover the excavatedareaand 1 <br /> overlap onto the existing asphalt surface to help <br /> This seal . <br /> -- ---- -- g-- fram <br /> vertical -surfacer-surface -durin vapor extraction. <br /> will also protect from infiltration of surface-water-(rain}— <br /> migrating through and saturating the vadose zone to be treated. <br /> page 5 <br />