Discharge of Sediment -Incid. #201803545

Dominion Energy Services. Inc.
5000 Dominion Boulevard
Dominion
Glen Allen, VA 2som
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BY CERTIFIED MAIL
RETURN RECEIPT REQUESTED
November 30, 2018
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Karen Higgins Dc C 1 2018
Environmental Program Supervisor
NCDEQ — Division of Water Resources JD_217 West Jones Street 428(UJFMFEFP RhA rr
Raleigh, NC 27603
RE: Follow-up written submission for Permit DWR #20140957 Discharee of sediment
within Stream SNR11004 and Wetland WNRHO05F (Incident #201803545). 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 28, 2018, and as required by Individual Water Quality Certification Permit No.
20140957 (Incident #201803545). 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:
11/28/2018 — Spread 8 — On 11/24, the project received approximately 1.50" of rainfall. On
the morning of 11/26 it was discovered that sediment -laden water overtopped the erosion and
sedimentation control measures resulting in sediment being deposited within the stream
SNRH004 and wetland WNRH005£ By the end of the day on 11/26, the contractor
completed removal of the deposited sediment by hand using shovels, pails etc. and repaired
all the erosion and sedimentation controls in the area. The erosion and sedimentation controls
were installed according to the approved plan and additional measures had been taken
following the previously reported release in this area on 11/13/2018. Additional erosion and
sedimentation controls, on top of already installed devices, including geotextile lined
waterbars, plastic lined hill sides, and silt fence reinforcement were installed to prevent
reoccurrence.
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.

Sincerely,
Richard dangle
Director, Environmental Services
Cc: Rick Trone
Jeremiah Dow
Photo Log:
SNRH004
Before clean-up operations began.

After clean-up operations complete.