Discharge of Sediment Written Submission

Dominion Energy Services, Inc.
5000 Dominion Boulevard
Glen Allen, VA 23060
DominionEnergy,com
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
;;Wo Energy,
RE: Follow-up written submission for Permit DWR #2.0.140957 Discharge of sediment
within wetland WNRH005F, Atlantic Coast Pipeline Spread 8
Dear Ms. Higgins:
This letter is to follow-up on the sediment discharge to waters of the state previously reported
on November 16, 2018, and as required by Individual, Water Quality CertificationTermit 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:
11/16/2018 — Spread 8 — Following a 2.00 inch rain event, ACP conducted post storm event
NPDES inspections where several areas of erosion and sediment controls adjacent to wetland
WNRH005F 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, the
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. Masongdominionenergy.com.
Sincere,
Richard Gangle
Director, Environmental Services
Cc: Rick Trone
Jeremiah Dow