NC0003425_Review of 2011 Env Report_20160818

NCDENR
North Carolina Department of Environment and Natural Resources
Beverly Eaves Perdue
Governor
Mr. Mike Mosely, Plant Manager
Roxboro Steam Electric Plant
1700 Dunnaway Road
Semora, North Carolina 27343
Division of Water Quality
Charles Wakild, P. E.
Director
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Dee Freeman
Secretary
Subject: Review of Progress Energy, Roxboro Steam Electric Plant (NPDES Permit NC0003425):
"2011 Environmental Monitoring Report".
Dear Mr. Mosely:
Michael Shepherd, Jeff DeBerardinis, and Danielle Mir of my staff have reviewed the 2011 Environmental
Monitoring report for fish community structure, fish tissue, and limnology data respectively. This report
was received by the Environmental Sciences Section (ESS) on October 25th, 2012.
Based on a review of the data provided, the fish community structure present in Hyco Reservoir is
comparable to other piedmont reservoirs of similar physical size and no concerns were noted.
In terms of fish tissue it was noted that while levels of Arsenic, Cadmium, and Copper were highest at the
transect nearest the outfall (Station 4), most of these levels were below lab reporting limits. Moreover,
there are no human risk assessment criteria for these elements in North Carolina. Similarly, Mercury and
Selenium were also highest at the transect nearest the outfall (Station 4). However, levels for these
elements were either below lab reporting limits or were well below the NCDHHS fish consumption
advisory levels (0.4 mg/kg wet weight and 10.0 mg/kg wet weight respectively).
However, there were several water quality standard violations documented in Hyco Reservoir:
1. Hardness (WS-V Standard =100 mg/1). The Hardness standard was exceeded at Station 2B (five
observations), 3B (one observation), 413 (six observations), 5D (three observations), 613 (six
observations), and 9E (six observations).
2. Manganese (WS-V Standard = 200 mg/1). The Manganese standard was exceeded at Station 413
(one observation), 5D (three observations), 6B (one observation), and 9E (one observation).
Environmental Sciences Section
1621 Mail Service Center, Raleigh, North Carolina 27699-1621
Location: 4401 Reedy Creek Road, Raleigh, North Carolina 27607
Phone: [phone] \ FAX: [phone]
Internet: http://portal.ncdenr.org/webiwaless/home
An Equal Opportunity \ Affirmative Action Employer
NonrthCarolina
Xatura!!y

Mike Mosely
November 21, 2012
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If you have any questions, please do not hesitate to contact me or my staff.
Sincerely,
Jay H. Sauber
Chief, Environmental Sciences Section
Cc: Danny Smith, Raleigh Regional Office
Tom Belnick, Surface Water Protection Section
Ken Rudo, NCDHHS