20080329 Ver 1_More Info Received_20080326

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Progress Energy Marsh 25,2008
Ms. Kimberly Garvey
Wilmington Regulatory Field Office
US Army Corps of Engineers
69 Darlington Avenue
Wilmington, NC 28403
Ms.Cyndi Karoly
North Carolina Division of Water Quality
401/Wetlands Unit
1650 Mail Service Center
Raleigh NC 27699-1650
Subject: Requested Approval for Dredging Brunswick Plant's Discharge Canal Settling Basin
Carolina Power&Light Company d/b/a Progress Energy Carolinas
Dear Ms. Garvey and Ms. Karoly:
In response to your email request Carolina Power & Light Company d/b/a Progress Energy Carolinas is
submitting the attached information for your review in regards to our previous submittal to dredge the
settling basin of our Brunswick nuclear Plant's discharge canal. Periodic maintenance dredging of the
settling basin is needed to ensure adequate flow of water through the discharge canal pumps.
Maintenance dredging in this area will restore the original settling basin depth and has been required and
permitted previously.
This temporary maintenance dredging activity is required to remove approximately 60,000 cubic yards of
silt material which has accumulated in the settling basin of the discharge canal pump station. The area of
the discharge canal (a permitted waste water treatment facility) to be disturbed during the dredging
activity is approximately 4.13 acres. The deposited material will be removed and retained in two spoil
ponds located on high ground adjacent to the discharge canal.
Attached to the submittal are photographs of the upland spoil area,several revised pages of the PCN,and
a check to the Division of Water Quality to cover the processing fee.
If you have any question or need any further information please contact me at(919)546-7457.
Sincerely,
Stephen G.Cahoon
Sr. Environmental Specialist
Progress Energy Carolinas, Inc.
Environmental, Health and Safety Services
Enclosures
c: Mr. Chad Coburn DWQ MAR 6 %008
Progress Energy Carolinas,Inc.
P.O.Box 1551 DENK 'tiAi L: uJA J Y
Raleigh,NC 27602 WpETLANDS AND STORMWATER BRANCH

D8 - D3Q-q
1. Provide a written description of the proposed impacts: No impacts to waters of the
state; maintenance dredging, will remove sediment around the discharge structure of the
canal. The dredging project will remove sediment build-up and restore the settling basin to
its original contours.
2. Individually list wetland impacts. Types of impacts include, but are not limited to
mechanized clearing, grading, fill, excavation, flooding, ditching/drainage, etc. For dams,
se ar ely list impacts due to both structure and flood*n .
Wetland Impact Type of Wetland Located within Distance to Area of
Site Number Type of Impact (e.g.,forested,marsh, 100-year Nearest Impact
(indicate on map) herbaceous,bog,etc.) Floodplain Stream (acres)
(yes/no) (linear feet
NA
Total Wetland Impact(acres)
3. List the total acreage (estimated) of all existing wetlands on the property: NA
4. Individually list all intermittent and perennial stream impacts. Be sure to identify temporary
impacts. Stream impacts include, but are not limited to placement of fill or culverts, dam
construction, flooding, relocation, stabilization activities (e.g., cement walls, rip-rap, crib
walls, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is proposed,
plans and profiles showing the linear footprint for both the original and relocated streams
must be included. To calculate acreage, multiply length X width, then divide by 43,560.
Stream Impact Perennial or Average Impact Area of
Number Stream Name Type of Impact Intermittent? Stream Width Length Impact
(indicate on ma Before Impact linear feet acres
NA
Total Stream Impact(by length and acreage)
5. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic
Ocean.and any other water of the U.S.). Open water impacts include, but are not limited to
fill, excavation, dredging, flooding, drainage, bulkheads, etc.
Open Water Impact Type of Waterbody Area of
Name of Waterbody
Site Number (if applicable) Type of Impact (lake,pond,estuary,sound,bay, Impact
(indicate on ma ) ocean,etc.) (acres)
NA BNP Discharge Canal Waste water treatment discharge canal 4.13
Updated 11/1/2005
Page 8of12

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