20170145 Ver 1_Riparian Buffer Authorization_20170131

AECOMEr OM AECOM Technical Services of North Caroliina, Inc.
/'1�` 1600 Perimeter Park Drive
Suite 400
Morrisville, NC 27560
www.aecom.com
January 27, 2017
Ms. Karen Higgins
Wetlands and Buffer Permitting Unit
NC Division of Water Resources
1617 Mail Service Center
Raleigh, NC 27699-1617
919 461 1100 tel
919 461 1415 fax
Subject: City of Raleigh Public Utilities Department
Sawmill Road and Wellesley Park Sanitary Sewer Replacement
Dear Ms. Higgins:
Enclosed are five copies of a Riparian Buffer Authorization Form for the City of Raleigh Sawmill Road
and Wellesley Park Sanitary Sewer Replacement project including: site location map, project
description with photos, USDA soil maps and USGS topographic map. A complete set of construction
plans has been prepared for this project and is available if necessary, but is not attached to this
application for simplicity.
The project will entail relocation of approximately 220 linear feet of sanitary sewer from Zone 1 to the
Zone 2 buffer. Existing sanitary sewer in the Zone 1 buffer will be abaondoned in place.
Please contact me with any questions regarding this permit application.
Sincerely,
AECOM Technical Services of North Carolina, Inc.
Mary T. Brice, P. E. LEED AP
Senior Environmental Engineer
Attachments

DWR
State of North Carolina
Department of Environment and Natural Resources
Division 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:
Sanitary Sewer Relocation at Sawmill Road and Wellesley Park
1b. County:
Wake
1c. Nearest municipality:
Raleigh
1d. Subdivision name:
Greystone
1e. Is the project located in any of North Carolina's
twenty coastal counties. If yes, answer 1f below.
❑ Yes
® No
1f. 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:
Various sanitary sewer easements
2b. Deed Book and Page No.
Various sanitary sewer easements
2c. Map Book and Page No.
(include a copy of the recorded
map that indicates when the lot
was created):
Various sanitary sewer easements
Q ��
2d. Responsible Party
(for Corporations):
City of Raleigh Public Utility Department
/V .
2e. Street address:
222 W. Hargett St.
i)
2f. City, state, zip:
Raleigh, NC 27601
4p Wqp
2g. Telephone no.:
919-996-4540
Rp OU,q
2h. Fax no.:
919-996-1866
G
2i. Email address:
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. Agent/Consultant Information (if applicable)
4a. Name:
Mary T. Brice
4b. Business name
(if applicable):
AECOM Technical Services of North Carolina, Inc.
4c. Street address:
1600 Perimeter Park Dr. Suite 400
4d. City, state, zip:
Morrisville, NC 27560
4e. Telephone no.:
919-461-1358
4f. Fax no.:
919-461-1415
4g. Email address:
[e-mail]
FORM: BA 10-2013 Page 1 of 5

B. Project Information and Prior Project History
1. Property Identification
1a. Property identification no. (tax PIN or parcel ID):
1 b. Site coordinates (in decimal degrees):
Latitude: 35.883735
Longitude: -78.671174
1c. Property size:
acres
2. Surface Waters
2a. Name of nearest body of water to proposed project:
Mine Creek
2b. Water Quality Classification of nearest receiving water:
C; NSW
2c. River basin:
Neuse River Basin
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:
The project takes place in an existing sanitary sewer easement. Land use in the vicinity of the project is
residential.
3b. Attach an 8'/2 x 11 excerpt from the most recent version of the USGS topographic map indicating the location of
the site
3c. Attach an 8'/ 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:
3e. Explain the purpose of the proposed project:
See attachment
3f. Describe the overall project in detail, including the type of equipment to be used:
See attachment
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:
Other:
4c. If yes, list the dates of the Corps jurisdictional determinations or State determinations and attach documentation.
5. Project History
5a. Have permits or certifications been requested or obtained for thisElYes
project (including all prior phases) in the past?
® No ❑ Unknown
5b. If yes, explain and detail according to "help file" instructions.
6. Future Project Plans
6a. Is this a phased project?
❑ Yes ® No
6b. If yes, explain.
FORM: BA 10-2013 Page 2 of 5

C. Proposed Impacts Inventory
1. Buffer Impacts
1 a. Project is in which protected basin?
® Neuse ❑ Tar -Pamlico ❑ Catawba
❑ Randleman ❑ Jordan ❑ Goose Creek
1b. 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 T
Reason for
impact
Type of impact
(exempt, allowable,
allowable w/ mitigation)
Stream name
Buffer
mitigation
required?
Zone 1
impact
(sq ft)
Zone 2
impact
(sq ft)
B1 ® P ❑ T
Installation of
sanitary sewer
allowable
unnamed
tributary of Mine
Creek
❑ Yes ® No
1,000
2,800
B2 ❑P ❑T
El Yes El No
B3 El El
El Yes El No
B4 ❑ P ❑ T
❑ Yes ❑ No
85 ❑ P ❑ T
❑ Yes ❑ No
B6 El El
[:1 Yes El No
Total
buffer impacts
1,000
1 2,800
1c. Comments: Project includes abandonment -in-place of sanitary sewer in Zone 1 which will remove approximately
3,000 sq ft of current Zone 1 impact.
D. Impact Justification and Mitigation
1. Avoidance and Minimization
la. Specifically describe measures taken to avoid or minimize the proposed impacts in designing project.
Buffer disturbances will be the minimum necessary to allow for abandonment of existing sewer and relocation to
Zone 2. Buffers will be restored to original contours and stabilized upon completion of the project.
1 b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques.
Work areas will be confined to the minimum extent necessary to perform the work. Disturbed areas will be
perpendicular to the buffer to the extent possible. Erosion control devices and measures will be installed prior to
construction and work will be scheduled during a dry period.
FORM: BA 10-2013 Page 3 of 5

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.
1 b. If you answered "yes" to the above, does the project require preparation of an
If due to site constraints, a BMP other than a level spreader is proposed, please provide a
environmental document pursuant to the requirements of the National or State (North
plan for stormwater treatment as outlined in Chapter 8 of the NC Stormwater BMP
Carolina) Environmental Policy Act (NEPA/SEPA)?
Manual and attach a BMP Supplement Form.
1 c. If you answered "yes" to the above, has the document been finalized by the State
F. Supplementary Information
1. Environmental Documentation
la. Does the project involve an expenditure of public (federallstate/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)?
1 c. 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):
Ruffin L. Hall
Llty manager
City of Raleigh
Post Office Box 590
Raleigh, North Carolina 27602
Applicant/Agent's Printed Name
4e- ZX V-1/
Applicant/Agent's Signature Date
(Agent's signature is valid only if an authorization letter from the applicant is provided.)
Send this completed form and accompanying documents to the following:
For government 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
NCDW R — 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, FedEx, etc.):
OR Karen Higgins
NCDWR — 401 & Buffer Permitting Unit
512 N. Salisbury Street
Raleigh, NC 27604
FORM: BA 10-2013 Page 5 of 5

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Disclaimer
Maps makes every effort to produce and publish
the most current and accurate information possible.
However, the maps are produced for information purposes,
and are NOT surveys. No warranties, expressed or implied
,are provided for the data therein, its use,or its interpretation.

Sanitary Sewer Relocation - Sawmill Road and Wellesley Park, Raleigh, Lat. 35.883735, Long. -78.671174
A sanitary sewer manhole and sanitary sewer mains and service lines ranging in size from 6 -inch PVC to 10 -inch ductile
iron are located within the Zone 1 stream buffer of an unnamed tributary to Mine Creek. The streambed width is
approximately 10 LF. As a result of erosion, some of the sanitary sewer infrastructure in the area is exposed and/or
unstable.
Proposed work consists of the following:
• Approximately 220 linear feet of sanitary sewer will be relocated from Zone 1 to the Zone 2 buffer.
• The existing pipe parallel to the stream within Zone 1 will be abandoned in place with flowable fill.
• One existing manhole within the streambed will be removed and the bank stabilized.
• Exposed DIP at the stream crossing will be replaced with restrained joint DIP and will be lowered so that it is no
longer exposed in the streambed.
The total temporary stream disturbance associated with this work will be approximately 50 linear feet. The total new
permanent buffer impacts associated with the relocation will be approximately 1,000 sq ft in Zone 1 and 2,800 sq ft in
Zone 2; however, abandonment and relocation of infrastructure in Zone 1 will remove approximately 3,000 sq ft of
current Zone 1 impact.
Erosion control measures such as silt fence, construction entrance, and dewatering will be used to prevent
sedimentation during construction. Impacted areas will be stabilized and revegetated.

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3 Soil Map—Wake County, North Carolina
b (Sawmill and Wellesley)
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^' Meters
N
N 0 150 300 6300 900
A0 500 1000 2000 3000
Map projection: Web Mercator Comer coordinates: WGS84 Edge tics: UTM Zone 17N WGS84
USDA Natural Resources Web Soil Survey
Conservation Service National Cooperative Soil Survey
7100 711000 711200 711400 711600
35° 52'23" N
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Page 1 of 4

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