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HomeMy WebLinkAboutNC0003425_Authorization to Construct_20200608Roxboro ATC History August 17, 1983 - Construction of a diversion curtain in the existing west ash basin March 26, 1986 - enlarge the existing ash settling pond to provide additional storage capacity and settling efficiency by raising the existing pond dam by 13 feet. Also includes the relocation of the influent pipe and construction of sluice canals and dikes in the pond to properly channel flows and ensure adequate retention time for ash settling. Required installation of monitoring wells and sampling May 8, 1987 - Construction of approximately 11,785 linear feet of 36 inch drain pipe, intake structure with bar screen, and filter screen, discharge structure and appurtenances. Required submittal of a plan of action describing CP&L intentions for continued monitoring of outfall 001 and criteria to determine when monitoring shall cease. August 7, 1989 - construction of a trapezoid weir to replace existing weir and recalibration of flow meter after installation of the new weir with discharge of treated wastewater to the Roanoke River. Roxboro Permit History Permit Issued June 30, 1981 Expiration: June 30, 1981(Copy of permit emailed by Duke) Outfall 001 - discharge of the ash pond for Units 1 and 2. The map shows the sampling location for this outfall at the intake canal. Outfall 002 - ash basin Units 3 and 4 Outfall 003 - heated water effluent canal Outfall 004- cooling water blowdown unit 3 Outfall 005 - cooling system blowdown unit 4 Outfall 006 - runoff Outfall 007 - Low vol waste Outfall 008 - boiler blowdown Outfall 010 - sewage treatment plant Outfall 011 - point source runoff Permit issued: March 13, 1987 Expiration: July 31, 1991 (Copy of permit emailed by Duke) Outfall 001 - east ash settling pond Outfall 002 - west ash settling pond Outfall 003 - heated water effluent canal Outfall 004- cooling water blowdown unit 3 Outfall 005 - cooling system blowdown unit 4 Outfall 006 - coal pile runoff Outfall 007 - Low vol waste Outfall 008 - domestic waste Outfall 009 - chemical metal cleaning waste Permit issued: April 29, 1994 Expiration: April 30, 1997 002 - ash settling pond 003 - heated discharge canal 004 - unit 4 cooling tower 005 - cooling tower blowdown 006 - coal pile runoff 008 - domestic ww 009 - chemical metal cleaning wastes Permit issued: January 26, 1998 Expiration: April 30, 2002 002 - ash settling pond 003 - heated discharge canal 005 - cooling tower blowdown 006 - coal pile runoff 008 - domestic ww Permit issued: December 31, 2002 Expiration: March 31, 2007 Permit writer - T. Rodriguez 002 - ash settling pond 003 - heated discharge canal 005 - cooling tower blowdown 006 - coal pile runoff 008 - domestic ww 009 - chemical metal cleaning wastes Permit issued: June 22, 2005 Expiration: March 31, 2007 Permit writer - Dawn Jeffrey. 002 - ash settling pond 003 - heated discharge canal 005 - cooling tower blowdown 006 - coal pile runoff 008 - domestic ww 009 - chemical metal cleaning wastes 010 - FGD Permit issued: August 9, 2007 Expiration: March 31, 2012 Permit writer - S. Chernikov. 002 - ash settling pond 003 - heated discharge canal 005 - cooling tower blowdown 006 - coal pile runoff 008 - domestic ww 009 - chemical metal cleaning wastes 010 - FGD