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Vapor samples will be collected in Tedlar bags by connecting a vacuum <br /> pump to sample ports located before the carbon vessels, between the carbon <br /> vessels, and after the carbon vessels The vacuum pump will run for <br /> approximately one minute to purge the pump before attaching the bag The <br /> ' Tedlar bag will be filled to approximately 75% of its volume to allow for <br /> vapor sample expansion Samples will be analyzed for benzene,toluene, <br /> ethylbenzene,and total xylenes(BTEX), hydrocarbons(TPH)by USEPA <br /> Method TO 14,or other parameters as required by the air pollution control <br /> district <br /> ' 4.2.4 Monitoring Well Development, Sampling,and Sample Analysis <br /> Groundwater samples will be collected quarterly from wells MW-1, <br /> ' MW-4, MW-9, MW-10, MW-11, MW-12, MW-13, PZ-2 and SP-2 during <br /> system operation Groundwater monitoring wells will be purged by pumping <br /> until the pH, conductivity, temperature, and turbidity of the water has <br /> stabilized for a minimum of three measurements A minimum of three casing <br /> volumes of water will be removed during purging <br /> 1 Within 24 hours after purging, groundwater samples will be collected from <br /> each of the wells Samples will be collected for laboratory analysis for <br /> BTEX by USEPA Method 8020 and TPH as gasoline by USEPA Modified <br /> Method 8015, and for MTBE/oxygenates by Method 8260 Samples will be <br /> collected with a disposable polyethylene bailer that was pre-cleaned at the <br /> factory <br /> 4.2.5 Reporting <br /> Quarterly reports, summarizing the system operation, laboratory analytical <br /> results, and remediation trends will be prepared The reports will include a <br /> description of the mayor activities during the reporting period and identify <br /> any modifications made to the system Additionally, monthly sampling of air <br /> emissions will be conducted <br /> i <br /> 4.2.6 Waste Management <br />' Wastes that can be generated during the construction and operation of a <br /> remediation system include excavated soils,well purge water, condensate <br /> from the vapor/liquid separator, and spent GAC <br /> No soil excavation is proposed at this time Condensate from the <br /> vapor/liquid separator will be allowed to evaporate, since flow is expected to <br /> be less than one gallon per day Spent GAC will be taken off-site and <br /> regenerated by the supplier Well purge water will continue to be disposed at <br /> an off-site disposal facility <br /> Remedial Action Work Plan <br /> Prepared for THE EARTHGRAINS COMPANY Prepared by Philip Services Corp <br /> IH 1ENV162400145\RAP6t300 doc 14 8131100 <br />