20180640 Ver 1_Riparian Buffer Authorization_20180509

State of North Carolina
} D�,WRDepartment of Environment and Natural Resources
Dtvislon of Water Resources Division of Water Resources
15A NCAC 02B.0233 (8)(b), .0243 (8)(b),.0250 (11)(b),.0259 (8)(b),.0267 (11)(c),.0607 (e)(2) - Buffer Authorization
FORM: BA 10-2013
Riparian Buffer Authorization Form
A. Applicant Information
1. Project Information
1a. Name of project:
Riverbend Station SWO18 Outfall
1 b. County.
Gaston
1c. Nearest municipality:
Mount Holly
1 d. Subdivision name:
Riverbend Steam Station
1 e. Is the project located in any of North Carolina's
twenty coastal counties. If yes, answer 1f below.
❑ Yes ® No
if. Is the project located within a NC Division of Coastal
Management Area of Environmental Concern (AEC)?
❑ Yes ® No
2. Owner Information
2a. Name on Recorded Deed:
Duke Power Company
2b. Deed Book and Page No.
Deed Book 1502 & Page 374-375
2c. Map Book and Page No.
(include a copy of the recorded
map that indicates when the lot
was created):
Same
2d. Responsible Parry
(for Corporations):
Duke Energy LLC
2e. Street address:
175 Steam Plant Rd.
2f. City, state, zip:
Charlotte, NC 28120
2g. Telephone no.:
704 263-3202
2h. Fax no.:
n/a
2i. Email address:
Ronnie. Goodman®Duke-Energy.com
3. Applicant Information (if different from owner)
3a. Applicant is:
❑ Agent ❑ Other, specify:
3b. Name:
3c. Business name
(if applicable):
3d. Street address:
3e. City, state, zip:
3f. Telephone no.:
3g. Fax no.
3h. Email address:
4. AgentlConsultant Information (if applicable)
4a. Name:
4b. Business name
(if applicable):
4c. Street address:
4d. City, state, zip:
4e. Telephone no.:
4f. Fax no.:
4g. Email address:
FORM: BA 10-2013 Page 1 of 4

B. Project Information and Prior Project History
1. Property Identification
1a. Property identification no. (tax PIN or parcel ID):
175022
1 b. Site coordinates (in decimal degrees):
Latitude: 35.370519
Longitude: 80.961767
1c. Property size:
83 acres
2. Surface Waters
2a. Name of nearest body of water to proposed project: Mountain Island Lake
2b. Water Quality Classification of nearest receiving water: WS -IV and B -CA
2c. River basin: Catawba River
3. Project Description
3a. Describe the existing conditions on the site and the general land use in the vicinity of the project at the time of this
application:
Outfall of SW018 has sparse vegetation and prone to erosion.
3b. Attach an 8 % x-11 excerpt from the most recent version of the USGS topographic map indicating the location of
the site
3c. Attach an 8'h x 11 excerpt from the most recent version of the published County NRCS Soil Survey Map
depicting the project site
3d. List the total estimated linear feet of all existing streams (intermittent and perennial) on the property:
1643 Linear Feet
3e. Explain the purpose of the proposed project:
To provide a long term solution for Outfall SW018 to prevent degradation of the slope toward Lake.
3f. Describe the overall project in detail, including the type of equipment to be used:
Stormwater Outfall SW018 requires riprap below the discharge for the final 30 feet to Waters of the US to prevent
long term erosion. An excavator will be used outside the FERC boundary to place the riprap.
4. Jurisdictional Determinations
4a. Have jurisdictional wetland or stream determinations by the
Corps or State been requested or obtained for this property/
project (including all prior phases) in the past?
® Yes ❑ No ❑ Unknown
Comments:
4b. If yes, who delineated the jurisdictional areas?
Name (if known):
Agency/ Consultant Company: AMEC
Other:
4c. If yes, list the dates of the Corps jurisdictional determinations or State determinations and attach documentation.
August 24, 2015
5. Project History
5a. Have permits or certifications been requested or obtained for this
project (including all prior phases) in the past?
® Yes ❑ No ❑ Unknown
5b. If yes, explain and detail according to "help file" instructions.
ISW NCS000548
6. Future Project Plans
6a. Is this a phased project?
❑ Yes ® No
6b. If yes, explain.
FORM: BA 10-2013 Page 2 of 4

C. Proposed Impacts Inventory
1. Avoidance and Minimization
1 a. Specifically describe measures taken to avoid or minimize the proposed impacts in designing project. Equipment
will use existing access roads as applicable to minimize disturbance. Wattles will be used as applicable to
minimize risk of offsite sediment from the work area. A full length turbidity curtain has been installed.
1. Buffer Impacts
2. Buffer Mitigation
2a. Will the project result in an impact within a protected riparian buffer that requires buffer
mitigation?
1 a. Project is in which protected basin?
❑ Neuse
❑ Randleman
❑ Tar -Pamlico ® Catawba
❑ Jordan ❑ Goose Creek
1 b. Individually list all buffer impacts below. If any impacts require mitigation, then you MUST fill out Section D of this
form.
Buffer impact
number—
Permanent (P)
or Temporary
Reason for
impact
Type of impact
(exempt, allowable,
allowable wl mitigation)
Stream name
Buffer
mitigation
required?
Zone 1
impact
(sq ft)
Zone 2
impact
(sq ft)
B1 ❑P El
Total buffer mitigation required:
2c. If buffer mitigation is required, is payment to a
mitigation bank or NC EEP proposed?
El Yes El No
2d. If yes, attach the acceptance letter from the mitigation bank or NC EEP.
2e. If no, then discuss what type of mitigation is proposed.
B2 ❑ P ❑ T
❑ Yes ❑ No
B3 ❑ P ❑ T
❑ Yes ❑ No
B4 ❑ P ❑ T
❑ Yes ❑ No
B5 ❑ P ❑ T
❑ Yes ❑ No
Bfi ❑ P ❑ T
I ❑ Yes ❑ No
Total buffer impacts
1 c. Comments:
D. Impact Justification and Mitigation
1. Avoidance and Minimization
1 a. Specifically describe measures taken to avoid or minimize the proposed impacts in designing project. Equipment
will use existing access roads as applicable to minimize disturbance. Wattles will be used as applicable to
minimize risk of offsite sediment from the work area. A full length turbidity curtain has been installed.
1 b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques.
No heavy equipment will be used inside 30 feet of the FERC boundary. Heavy equipment working within 100 feet
of WOTUS will require frequent inspections before and after work, spotters and spill kits nearby. Spotters and
spill kits will be readily accessible and a pre and post job brief will occur to minimize risk of spills.
2. Buffer Mitigation
2a. Will the project result in an impact within a protected riparian buffer that requires buffer
mitigation?
❑ Yes ® No
2b. If yes, then identify the square feet of impact to each zone of the riparian buffer that requires mitigation and
calculate the amount of mitigation required in the table below.
Zone
Reason for impact Total impact Multiplier
(square feet
Required mitigation
(square feet
Zone 1
3 (2 for Catawba)
Zone 2
1.5
Total buffer mitigation required:
2c. If buffer mitigation is required, is payment to a
mitigation bank or NC EEP proposed?
❑ Yes ❑ No
2d. If yes, attach the acceptance letter from the mitigation bank or NC EEP.
2e. If no, then discuss what type of mitigation is proposed.
2f. Comments:
FORM: BA 10-2013 Page 3 of 4

E. Diffuse Flow Plan
All buffer impacts and high ground impacts require diffuse flow or other form of ® Diffuse flow
stormwater treatment. Include a plan that fully documents how diffuse flow will be ®Other BMP
maintained. If a Level Spreader is proposed, attach a Level Spreader Supplement Form.
If due to site constraints, a BMP other than a level spreader is proposed, please provide a
plan for stormwater treatment as outlined in Chapter 8 of the NC Stormwater BMP
Manual and attach a BMP Supplement Form.
F.
Supplementary Information
I.
Environmental Documentation
la-
Does the project involve an expenditure of public (federal/state/local) funds or the use of
❑ Yes ® No
public (federal/state) land?
1 b.
If you answered "yes" to the above, does the project require preparation of an
❑ Yes ❑ No
environmental document pursuant to the requirements of the National or State (North
Carolina) Environmental Policy Act (NEPA/SEPA)?
1c.
If you answered "yes" to the above, has the document been finalized by the State
❑ Yes ❑ No
Clearing House? (If so, attach a copy of the NEPA or SEPA final approval letter.)
Comments:
2.
Violations
2a,
Is the site in violation of DWR Wetland Rules (15A NCAC 02H .0500), Isolated Wetland
❑ Yes ® No
Rules (15A NCAC 02H.1300), DWR Surface Water or Wetland Standards, or Riparian
Buffer Rules (15A NCAC 02B .0200)?
2b. Is this an after -the -fact permit application?
❑ Yes ® No
2c.
If you answered "yes" to one or both of the above questions, provide an explanation of the violation(s):
Ronnie Goodman
Applicant/Agent's Printed Name Applicant/Agent's Signature Date
(Agent's signature is valid only If an authorization letter Iron the applicant is provided.)
Send 3 complete sets of this form and accompanying documents to the following:
Forgovernment transportation projects sent
by First Class Mail via the US Postal Service:
NC DWR, Transportation Permitting Unit
1617 Mail Service Center
Raleigh, NC 27699 - 1617
For all other projects sent by First Class Mail
via the US Postal Service
Karen Higgins
NCDWR — 401 & Buffer Permitting Unit
1617 Mail Service Center
Raleigh, NC 27699 - 1617
For government transportation projects sent
by delivery service (UPS, FedEx, etc.):
OR NC DWR, Transportation Permitting Unit
512 N. Salisbury Street
Raleigh, NC 27604
For all other projects sent by delivery service
(UPS, FedE,r, etc.):
OR Karen Higgins
NCDW R — 401 & Buffer Permitting Unit
512 N. Salisbury Street
Raleigh, NC 27604
FORM: BA 10-2013 Page 4 of 4

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