NC0003425_Review of 2010 Env Monitoring Report_20160818

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NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins
Governor Director
August 30, 2011
Mr. Mike Mosley
Plant Manager, Roxboro Steam Electric Plant
1700 Dunnaway Road
Semora, North Carolina 27343
Dee Freeman
Secretary
Subject: Review of Progress Energy, Roxboro Steam Electric Plant (NPDES Permit NC0003425): "2010
Environmental Monitoring Report".
Dear Mr. Mosley:
Environmental Sciences Section (ESS) staff has reviewed the subject document which we received on July 291n
2011. Bryn Tracy, Jeff Deberadinis and Deborah Owen evaluated the sections on fish community, fish tissue, and
water chemistry respectively. Based on the review of the data provided, we are pleased to note a continuing trend of
Mercury and Selenium levels that are below the North Carolina Department of Human Health Service's fish
consumption advisory action levels. However, we did note that the concentrations of major ions, conductivity and
hardness have increased at monitoring site 4B. This site will need to be closely monitored over time for any potential
increases in metals and conductivity in the lake water, sediment and fish tissue.
In addition, the following items should be included in future reports:
1. A list of nonindigenous fish species is provided on Page 12. In addition to this list, the following
nonindigenous taxa should also be added: White Bass, Green Sunfish, and Redear Sunfish. Including these
taxa will allow us to more accurately assess trends in these nonindigenous fish over time.
2. Historical biomass, abundance, relative weight, and quality of fishery data should be shown in graphical or
tabular format for the last 10 years. Inclusion of these data will aid in analyzing trends in these metrics over
time.
3. Please add Boron, Mercury (low level), and Thallium to the sample locations. All three of these parameters
are coincident with coal fired power plants and can have adverse impacts to aquatic life and therefore their
monitoring are crucial. Moreover, data from Progress Energy at the intake canal (ESS Hyco Lake Station 5)
and for outfall 003 (NPDES Final Outfall to Hyco Lake) indicated that some of these samples had Thallium
levels in excess of water quality standards. The low level Hg method is necessary to indicate any potential
changes in Hg concentrations that may coincide to the new FGD waste stream.
4. Please provide historical and seasonal results for the last 10 years for the limnological variables currently
detailed in Appendix 2. Inclusion of these data will aid in analyzing trends in these metrics over time.
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
Sergei Chernikov, Surface Water Protection Section
Tom Belnick, Surface Water Protection Section
Environmental Sciences Section
1621 Mail Service Center, Raleigh, North Carolina 27699-1621
Location: 4401 Reedy Cr Road. Raleigh, North Carolina 27604
Phone: [phone] \ FAX [phone] \ Customer Service: 1-877-623-6748
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Internet: www.ncwaterquality.org
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