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<br /> 4. A zoning map of the area. Attachment 5. chemical recovery, metal precipitation, acids and bases
<br /> neutralization, filtration, and sludge thickening. Cyanide
<br /> 5. Aerial Photo of area. Attachment 6. { removal will be accomplished with a cyanide oxidation
<br /> process. After metals removal, wastewater from these
<br /> 6. Traffic Report. Attachment 7. j processes will be treated further by clarification and
<br /> neutralization, and multimedia or sand filtration. (Refer
<br /> 7. Waste Board Facility Description. to Attachment A for a detailed process description.)
<br /> 5. Describe the proposed project: ' It is expected that 108 to 258, by dry metal weight, of the
<br /> incoming metal waste will be recovered for reuse.
<br /> The Metropolitan Recovery Corporation (MRC) is proposing to Nonhazardous waste, primarily zinc, will constitute
<br /> construct a central treatment and recovery facility. This approximately 308, by dry metal weight, of the incoming
<br /> facility would process solid wastes, liquid wastes, and ion processed wastes. Approximately 758 of the total incoming •
<br /> exchange resin canisters containing cadmium, chromium, wastes will not initially be amenable to recovery. These
<br /> copper, lead, zinc, nickel, and other metals generated by will be processed into inert solid residuals, mixed metal,
<br /> metal platers, printed circuit manufacturers, and other dewatered sludges, or neutralized. Solid inert substances
<br /> metal finishing businesses (metal finishers) primarily S generated, if nonhazardous, will be disposed of at sanitary
<br /> located in the metro area, and recover metals and metal landfills' in Minnesota. Mixed metal sludges and organic
<br /> precipitates for sale and reuse. Unrecoverable wastes materials will be disposed of at approved out-of-state
<br /> would be transformed into solids to 'be disposed in approved hazardous waste facilities, or at approved solvent and oil
<br /> landfills. Organic liquids and sludges will be stored for recovery facilities.
<br /> transshipment to appropriate out-of-state treatment and
<br /> disposal facilities. The facility would be located in The facility will dispose of approximately 80,000 gallons
<br /> Roseville at Walnut Street and Rose Place on an undeveloped of wastewater per day (assuming a 28-shop case) into the
<br /> industrially zoned (1-2) site. (See EAW Figures 1-4 for municipal/metropolitan sewage treatment system. wastewater
<br /> the project location.) will be pretreated at the facility to ensure compliance
<br /> with applicable industrial wastewater effluent require-
<br /> The facility is being proposed to help metal finishing 3 ments, including the local pretreatment limitations for the
<br /> shops, particularly the smallest shops who may not be able I { metropolitan disposal system for metals, and cyanide
<br /> to afford any type of treatment, to comply with MWCC and concentrations, wastewater pH, and any applicable federal
<br /> federal pretreatment regulations which restrict metal waste regulations for wastewater discharges.
<br /> discharges into the sewer system. These regulations took
<br /> effect on April 27, 1984. The facility is the outcome of a The facility will also serve as a collection station for
<br /> feasibility study conducted by the Resource Recovery Task small quantities of organic wastes. These wastes will be
<br /> Force, a group formed by the Metropolitan Council and the combined with like wastes destined for similar final
<br /> Twin Cities Association of Metal Finishers in April of l treatment or disposal, and shipped in full truck load
<br /> 1982, which included MPCA and Waste Management Board staff. quantities to their.final destination. This capacity will
<br /> The Task Force studied the feasibility of a central assist small and intermediate quantity generators which
<br /> facility to treat metal waste generated in the metro area. constitute a high percentage of all generators in.
<br /> as Minnesota.
<br /> As of August 30, 1984, 28 out of a possible total of 96 ;
<br /> Twin Cities metal finishers and electroplaters have The drum storage area will be capable of holding a maximum
<br /> contracted to utilizing the proposed central facility. of 1,500 drums at one time; the expected average being
<br /> Other companies included in the 96 have expressed interest about 1,000. The storage area floor will be a continuous
<br /> in utilizing the facility once operation can be demon- concrete pad, elevated in the center and sloping down on
<br /> strated. The potential customer market is much larger than both sides to form two separate areas for handling
<br /> the 28 contracted firms. incompatible wastes. Drums will be grouped according to
<br /> method of final processing indicated by the generator on
<br /> The facility will be operated as a Minnesota corporation, the manifest or bill of lading. The building will have a
<br /> The 28 participating metal waste generators own stock and truck access opening and will be equipped with safety
<br /> will have rights regarding the facility's operation. showers, fire detectors and extinguishers, a sprinkler
<br /> system, two sumps, and other safety features required by
<br /> Processes to be used at the facility to remove metals from regulation.
<br /> the incoming waste feed stock will include ion exchange,
<br /> activated carbon adsorption, chromium reduction, electro-
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