Discharge of Sediment

Dominion Energy Services, Inc.
5000 Dominion Boulevard
Glen Allen, VA 23060
DominionEnergy. own
BY CERTIFIED MAIL
RETURN RECEIPT REQUESTED
November 19, 2018
Karen Higgins
Environmental Program Supervisor
NCDEQ — Division of Water Resources
217 West Jones Street
Raleigh, NC 27603
Dominion
EnergyF
RE: Follow-up written submission for Permit DWR #20140957 Discharge of sediment
within Stream SNRH004, WNRHO05F and Wetland WHLF003F, Atlantic Coast
Pipeline Spread 8--AMENDMENT
Dear Ms. Higgins:
This amended letter is to follow-up on the sediment discharge to waters of the state
previously reported on November 13, 2018, and as required by Individual Water Quality
Certification Permit No. 20140957. Dominion Energy takes environmental compliance very
seriously and immediately notified the Division of Water Resources, Raleigh Regional Office
upon discovery of this discharge, and took immediate action to remedy this issue. The
discharge information and corrective actions are as follows:
11/13/2018 — Spread 8 — Following a 2.50 inch rain event, ACP conducted post storm event
NPDES inspections where several areas of erosion and sediment controls adjacent to stream
SNRH004, wetland WNRH005F and WHLF003F were observed overtopped with sediment.
The result was a discharge and deposition of sediment within these Waters of the United
States. Material deposited within the resources was removed and brought back within the
approved upland workspace, timber mat bridge was cleaned on the stream crossing, and
erosion controls were repaired and reinforced. Measures to prevent this from reoccurring
included installing additional erosion controls at the resources and increasing the amount of
water bars on the slope above the impacted area.
If you have any questions or need additional information, please feel free to contact Ryan
Mason at (804)-346-6234 or via email at Ryan.Masonna dominioneneray.com.
Sincerely,__
Richard�Gangle
Director, Environmental Services
Cc: Rick Trone
Jeremiah Dow

Photo Log:
SNRH004/WNRH005F
Before clean-up operations began.

_MQ
1 1-4 1

a
i

WHLF003F
Before clean-up operations.

After clean-up operations complete.