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DEEP makes tentative decision about renewing a state permit for MannKind Corporation

The state Department of Enery and Environmental Proteciton has issued a notice of a tentative decision about renewing a state permit for discharges into the waters by Danbury-based MannKind Corporation.  DEEP determined that continuance of the existing system to treat the discharge would protect the waters of the state from pollution.  The Commissioner proposes to renew a permit for the discharge to the sanitary sewer. 

MannKind Corporation, located on Casper Street, presently discharges a maximum of 41.490 gallons per day of pharmaceutical and non-process wastewaters to the Danbury Water Pollution Control Facility from pharmaceutical operations primarily for inhalable insulin products, including solution preparation, pharmaceutical formulations, laboratory wastewater, reverse osmosis reject water, and process equipment cleaning, at a pharmaceutical manufacturer and research facility.

Through this permit renewal, MannKind Corporation has requested to increase their total maximum discharge to 49,390 gallons per day. Building 8, DSN 200-1, discharges pharmaceutical research wastewater and reverse osmosis backwash and reject wastewater. This maximum flow of 4,990 gallons per day has remained the same as the previous permit. These wastewaters are treated through a continuous pH neutralization system. 

Building 1, DSN 201-1, discharges pharmaceutical formulations process wastewater, reverse osmosis backwash and reject wastewater, quality control laboratory wastewater and solution preparations, process equipment cleaning wastewater, VC stills blowdown, and HVAC condensate. This permit renewal proposes an increase of the maximum flow for this DSN from 36,500 gallons per day to 44,400 gallons per day to accommodate increased production and an additional reverse osmosis system. These wastewaters are treated through a batch pH neutralization system and heat exchanger. 

Prior to making a final decision to approve or deny any application, the Commissioner will consider written comments on the application (APPLICATION NO. 201502444, PERMIT ID NO. SP0002395) from interested persons that are received by November 22nd.  Written comments should be emailed to Alexandra MacLaren at alexandra.maclaren@ct.gov.

The Commissioner may hold a public hearing prior to approving or denying an application if in the Commissioner's discretion the public interest will be best served thereby, and shall hold a hearing upon receipt of a petition signed by at least 25 persons. Notice of any public hearing shall be published at least 30 days prior to the hearing.

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Brian Kilmeade

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