Belews Creek Coal Pile Assessment Plan Comments 6-24-19

ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
LINDA CULPEPPER
Director
Paul Draovitch
Senior Vice President
Environmental, Health & Safety
Duke Energy
526 South Church Street
Mail Code EC3XP
Charlotte, North Carolina 28202
NORTH CAROLINA
Envfronmenta! Qualtty
June 24, 2019
Subject: Coal Pile Area Assessment Work Plan Comments — Belews Creek Steam Station
Dear Mr. Draovitch:
On May 24, 2019, the North Carolina Department of Environmental Quality Division of Water
Resources (Division) received the proposed Coal Pile Area Assessment Work Plan for the Belews
Creek Steam Station. The Division has reviewed and hereby approves the proposed assessment
activities under the condition that the following items are addressed as part of the plan
implementation and the results reported in the comprehensive site assessment concerning the
subject area.
• Add a well cluster (shallow/deep/bedrock) immediately adjacent to and downgradient of
the coal pile to assess potential impacts within the footprint of the storage field.
• Please update Table 2 to reflect the additional wells requested.
• Please add a line outlining the footprint of the coal pile on Figure 1 and clearly label any
related features.
• Surface water samples should be collected in Belews Reservoir east of proposed well
cluster CP-4S/D/BR.
• In addition to further characterizing groundwater flow regimes in the vicinity of the coal
pile storage field, data should be collected from each proposed well to evaluate hydraulic
parameters such as hydraulic conductivity and flow velocity in the area.
If applicable, the results should also be incorporated into the updated CAP's revised geochemical
and groundwater fate and transport models. If the results of the modeling show current or future
impacts to groundwater and/or surface water from this area, then appropriate remedial strategies
shall be proposed in the CAP.
North Carolina Department of Environmental Quality I Division of Water Resources
0 I 512 North Salisbury Street 1 1636 Mail Service Center I Raleigh, North Carolina 27699-1636
919.707.9000

If you have any questions, please contact Shuying Wang (Winston-Salem Regional Office) at
[phone] or Steve Lanter (Central Office) at [phone].
Sincere
Jon Risga Chief
Animal Feeding Operations and Groundwater Section
cc: WSRO WQROS Regional Office
WQROS Central File Copy