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NC0004987 Marshall Steam Station

Event Description

PUBLIC NOTICE
N.C. DEPARTMENT OF ENVIRONMENTAL QUALITY INTENT TO ISSUE NPDES WASTEWATER DISCHARGE PERMIT #NC0004987

Public comment or objection to the draft permit modification is invited. All comments received by June 22, 2016 will be considered in the final determination regarding permit issuance and permit provisions.

PERMIT APPLICATION
Duke Energy Carolinas, LLC has applied for a renewal of its NPDES wastewater permit (NC0004987) for Marshall Steam Station, 8320 East N.C. Highway 150, Terrell, N.C., Catawba County. The facility discharges treated industrial wastewater to Lake Norman in the Catawba River basin. This discharge may affect future allocations in this portion of the Catawba River basin.

The thermal component of the discharge is subject to effluent limitations under the federal Clean Water Act sections 301/306 and N.C. Administrative Code Section: 15A NCAC 2B.0211 (3) (j), which prohibits an exceedance of 2.8 degrees C (5.04 degrees F) above the natural water temperature, and in no case to exceed 32 degrees C (89.6 degrees F). The permit holder has requested a continuance of a Clean Water Act 316(a) variance, which would impose an alternative, less stringent limitation on the thermal component of the discharge. The proposed variance imposes a monthly average limit of 34.4 degrees C (94 degrees F) for the period from July 1 through October 31, and a monthly average limit of 33.3 degrees C (92 degrees F) for the period from November 1 through June 30. On the basis of the N.C. Administrative Code Section: 15A NCAC 2B.0208 (2) (b) and other lawful standards and regulations, the N.C. Division of Water Resources proposes to continue the 316(a) variance in conjunction with renewal of the permit.

The draft wastewater permit and related documents are available online at: https://deq.nc.gov/about/divisions/water-resources/water-resources-hot-t.... Printed copies of the draft permit and related documents may be reviewed at the department’s Mooresville Regional Office. To make an appointment to review the documents, please call 704-663-1699.  

Public comment on the draft permit modification should be mailed to: Wastewater Permitting, Attn: Marshall Permit, 1617 Mail Service Center, Raleigh, N.C., 27699-1617. Public comments may also be submitted by email to: publiccomments@ncdenr.gov. Please be sure to include “Marshall” in the email’s subject line.

PUBLIC HEARING
The N.C. Department of Environmental Quality will hold a public hearing to accept comments on the draft permit at 6 p.m. Wed., June 22 at the Catawba Valley Community College East Wing Auditorium. The auditorium is located next to the library on the college’s main campus, 2550 Hwy. 70 Southeast, Hickory, N.C. Speaker registration begins at 5 p.m.

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