NC0003417_Conditional Approval Response_20150629

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North Carolina Department of Environment and Natural Resources
Pat McCrory
Governor
June 29, 2015
Duke Energy
c/o: Mr. D. Edwin M. Sullivan
P.O. Box 1006
Mail Code EC13K
Charlotte, North Carolina 28201-1006
RE: Conditional Approval Letter Response
H.F. Lee Energy Complex
Wayne County, North Carolina
Dear Mr. Sullivan:
Donald R. van der Vaart
Secretary
The Division of Water Resources received Duke Energy's May 22, 2015 response to DENR's
Conditional Approval dated February 6, 2015 for the H.F. Lee Energy Complex Revised
Groundwater Assessment Work Plan. Duke Energy concurs with comments provided for the
following sections:
• 4.0 Regional Geology and Hydrogeology
• 5.3 Hydrogeologic Site Characteristics
• 7.1 Subsurface Exploration
• 7.1.3.3 Proposed Wells Down gradient of Ash Basins
• 7.2 Ash Pore Water and Groundwater Sampling and Analysis
Please incorporate and implement the agreed upon scope of work as related to the above conditions
and outlined in Duke Energy's May 22, 2015 response.
Additionally, Duke Energy requests guidance regarding solid phase testing methods for total
organic carbonate content. Research conducted by the Division has not identified a laboratory
method for analysis of total organic carbonate with respect to solid phase samples. We appreciate
Duke Energy bringing this issue to our attention. Since a suitable laboratory method for total
organic carbonate has not been found, Duke Energy is not compelled to perform this analysis as part
of the groundwater assessment at the Lee Plant and other facilities located in the Coastal Plain.
Division of Water Resources — Water Quality Regional Operations Section — Washington Regional Office
943 Washington Square Mall, Washington, NC 27889
Phone: [phone] Fax: [phone] Internet: www.ncdenr.gov
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Mr. Sullivan
June 29, 2015
Page 2
Should you have any questions or require additional information, please contact Will Hart at 252-
948-3918.
Sincerely,
David May, L.G., Regional Supervisor
Division of Water Resources Water Quality Regional Operations
Washington Regional Office
cc: Ricky Miller — Duke Energy
John Toepfer — Duke Energy
Kathy Webb — SynTerra Corporation
Geoff Kegley — Div. Water Resources — Wilmington
Shristi Shrestha — Div. Water Resources — Fayetteville
Steven Lanter — Div. Water Resources — Central Office