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OC7 - 1 2 -- 90 PRI 1 G 1 1 W NF a " V IRON ME�-1AL- P _ <br /> Brent Larson <br /> Union Ice Company <br /> Page: 2 <br /> Weber Street <br /> The re-excavation work plan is to ' submitted by October 1$, 1990. We <br /> believe the contaminated soil to be removed will be smaller than we are proposing, <br /> however, a worst case scenario for soils excavation would be 5,000 to 7,000 yards with <br /> 3,000 yards to be remediated. Using 7,000 yards at $20.00 per yard as the cost of the <br /> excavation and recompaction, this equals $140,000 plus 900 yards of gravel at $15,00 <br /> per yard equals $13,500. The soil remediation at $15.00 per yard x 3,000 yards equals <br /> $45,000. The total cost of the soils cleanup equals $19$,500 (worst case). We,expect <br /> the soils clean up to be less than half of our worst case scenario, or approximately <br /> $100,000. <br /> Groundwater Glean-up <br /> We have discovered, through our soil vapor study, that groundwater has moved <br /> significantly, and that the main body of contaminated water is 50' southeast of the <br /> original spill. We will install an extraction well so as to intercept this water before it <br /> goes under your warehouse. rA. groundwater extraction well, with a pump and <br /> plumbing would cost around $15,000 - $20,000. Rental tanks to deal with free floating <br /> product would cost about $5,004. An air stripping tower or carbon filters, if <br /> necessary, for the life of the project would cost about $50,000 for the carbon or <br /> $25,000 for the tower. The sewer discharge fees are unknown. The NPDES permit is <br /> $10,000415,000 if one is required. The lab fees are unknown, and depend on the <br /> County (estimated $1,500). The consulting fees would cost from $25,000 - $30,000. <br /> The total estimated fees for groundwater would cost about $135,000 (worst case), but <br /> anticipated costs are $95,000. <br /> We will need your authorization to proceed with any of these activities, except <br /> Union Street. We have a deadline set by the County to finish that project. Please call <br /> if you have any questions. <br /> Sincerely, <br /> Steven J. Pumas, REA <br /> WIO l3NMONMENTAL CONSULTANTS, INC. <br /> SJF;sm <br />