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Findings of Fact - page 8 <br />Metropolitan Metals Recovery <br />September, 1983 <br />Z° The MWCC industrial wastewater discharge Permit w <br />include local pretreatment hick will <br />Disposal System and applicable limitations for the Metropolitan <br />limitin ble federal categorical regulations <br />g the concentration of metals <br />(including cadmium, total <br />chromium, copper, lead <br />cyanide concentration , nickel, zinc and mercury) �') the total <br />Proposed facility's waste- <br />water to be discharged to <br />facility must the sanitary sewer. Also, the <br />solids concentrations or Cwas�ewdiste charging total suspended <br />ith <br />demand levels over set base levels. w(EAW)hemical oxygen <br />3• The project may also <br />emission facilit besub3ect to MPCA minor source air <br />mits Which may be required for .he <br />Proposed facility <br />a. venting to the outside air is to occur,or <br />b- a boiler is installed for the project tr'ippin <br />requirements in ?CPC-3. 9 <br />(EAW• EAW errata) <br />The need for an air qualit <br />the desi Y Permit will be determined after <br />gn specifications for the facility are completed. (EAW) <br />The air emission facility Permits would include requirements <br />from a) APC-S, Standards of Performanceq menu <br />Equipment which include for Industrial Process <br />limits' b) APC-g for control roflodorate s�inethe emission and opacity <br />c) NPC-1 and NPC-2ambient air, and <br />bons. Agency � the Agency s noise Pollution control regula- <br />tions. rule APC-4 applies if a boiler is to be installed. <br />IV• THE EXTENT TO WHICH ENVIRONMENTAL AS A RESULT OF EFFECTS CAN BE AN AND CON'i*ROLLED <br />ON THE PROJECT PROPOSED OR OF EIS' STUDIES UNDERTAKEN BY PUBLIC AGENCIES <br />S PREVIOUSLY PREPARED ON SIMILAR PROJECTS <br />A similar, much smaller scale facility, the Sperry Univac precious metals <br />recovery system at Mendota Heights, <br />Air Quality to control hydrogen cyanide has been Permitted by the Division of <br />dicing inorganic nonhazardous wastes containing <br />emissions. Man businesses pro- <br />ducing Y Permit from the Agency. Presents `� metals have obtained an NPDES <br />hazardous waste processing. Y• one compan <br />Y is being permitted for <br />Wastewater treatment processes to be used by the Proposed facility are the <br />same or are comparable to processes that form the basis f®L' <br />Runnette, Division of Water (Personal communications federal <br />categorical pretreatment regulations. <br />Quality Permiits Se t' <br />- Randy <br />a <br />c on, 8/31/83 ) <br />