20120202 Ver 3_Riparian Buffer Authorization_20170807

CAROLINA
E',COSYSTEMS9 INC.
August 2, 2017
Ms. Karen Higgins
NC Division of Water Resources
401 and Buffer Permitting Branch
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
3040 NC Hwy 42 West; Clayton, NC 27520
P:919-359-1102 — F:919-585-5570
RE: Neuse River Buffer Authorization
City of Raleigh Crabtree Creek Greenway Retaining Wall Replacement
Wake County, North Carolina
Dear Ms. Higgins:
12 @ 12 016 11
D
AUG 0 7 2017
DEQ -WATER RESOURCES
Carolina Ecosystems, Inc. has prepared the attached Riparian Buffer Authorization Form on
behalf of the City of Raleigh and Wetherill Engineering, Inc. for the above referenced project.
The City of Raleigh is proposing replacement of the retaining wall along the Crabtree Creek
Greenway near Generation Drive (Figures 1 through 4). This activity will involve some tree
clearing within the construction footprint, requiring minimal impact to Crabtree Creek's buffer.
Proposed impacts to riparian buffer zones at this site are 1,330 square feet of Zone 1 impacts and
110 square feet of Zone 2 impacts (see attached buffer impact drawing). These impacts are
classified as "allowable" under the Neuse Buffer Rules. Since the impacts are minimal with no
addition of impervious surface area and no new stormwater outfalls are proposed, a diffuse flow
plan is not provided.
The preceding information, along with the enclosed Riparian Buffer Authorization Form,
vicinity map (Figure 1), project map aerial (Figure 2), USGS map (Figure 3), NRCS map (Figure
4), and buffer impact drawings are being submitted for your review of this project.
Sincerely,
x/47
Gregory W. Price
Senior Scientist

D State of North Carolina
Department of Environmental Quality
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
1 a. Name of project:
City of Raleigh Crabtree Creek Greenway Retaining Wall Replacement
1 b. County:
Wake
1c. Nearest municipality:
Raleigh
1 d. Subdivision name:
1 e. Is the project located in any of North Carolina's twenty coastal counties?
If yes, answer 1 f 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:
City of Raleigh easement
2b. Deed Book and Page No.
2c. Map Book and Page No.
(include a copy of the
recorded map that indicates
when the lot was created):
2d. Responsible Party
(for Corporations :
Parks, Recreation, and Cultural Resources Department
2e. Street address:
P.O. Box 590
2f. City, state, zip:
Raleigh, NC 27602
2g. Telephone no.:
919-996-3285
2h. Fax no.:
21. Email address:
[e-mail]
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:
Greg Price
4b. Business name
if applicable):
Carolina Ecosystems, Inc.
4c. Street address:
3040 NC Hwy 42 W
4d. City, state, zip:
Clayton, NC 27520
4e. Telephone no.:
919-359-1102 Ext 105
4f. Fax no.:
4g. Email address:
I [e-mail]
FORM: BA 10-2013 Page 1 of 4

B.
Project Information and Prior Project History
1.
Property Identification
1 a. Property identification no. (tax PIN or parcel ID):
1 b. Site coordinates (in decimal degrees): Latitude: 35.839349 1 Longitude: -78.668235
1 c. Property size: Approximately 0. 14 acres
2.
Surface Waters
2a. Name of nearest body of water to proposed project: Crabtree Creek
2b. Water Quality Classification of nearest receiving water: C; NSW
2c. River basin: Neuse
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 site is located on one of City of Raleigh's existing greenways. The surrounding vicinity consists of
commercial and residential areas.
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 1/2 x 11 excerpt from the most recent version of the published County NRCS Soil Survey Map
depicting the promect site
3d. List the total estimated linear feet of all existing streams (intermittent and perennial) on the property:
Approximately 240 linear feet.
3e. Explain the purpose of the proposed project:
Replace retaining wall along the Crabtree Creek Greenway to ensure the safety of greenway users.
3f. Describe the overall project in detail, including the type of equipment to be used:
Perform minor tree clearing to get access for retaining wall replacement along Crabtree Creek Greenway.
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: Project was reviewed and no
wetlands were found.
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 this project(including all priorphases) in thepast?
❑ Yes ® 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 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.
1. Buffer Impacts
1 b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction
techniques. Sediment and erosion control measures will be implemented according to NC requirements, and
1 a. Project is in which protected basin?
® Neuse ❑ Tar -Pamlico
❑ Catawba
to the prime contractor and all subcontractors working in or near jurisdictional areas.
❑ Randleman ❑ 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 Reason for
Type of impact Stream name Buffer
Zone 1 Zone 2
number — impact
(exempt, allowable, mitigation
impact impact
Permanent (P)
allowable w/ required?
(sq ft) (sq ft)
or Temporary
mitigation)
T
1.5
131 ®P ❑ T Retaining Wall
Allowable Crabtree Creek ❑ Yes ® No
1,330 110
Replacement
❑Yes ❑ No
proposed?
B2 P El
❑ Yes ❑ No
2e. If no, then discuss what type of mitigation is proposed.
63 ❑ P ❑ T
❑ Yes ❑ No
B4 ❑ P ❑ T
❑ Yes ❑ No
65 ❑ P ❑ T
❑ Yes ❑ No
B6 El P ❑ T
❑ Yes ❑ No
Total buffer impacts
1,330 110
1c. 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.
This promect will only minimally impact the buffer due to tree clearing for access for retaining wall replacement.
1 b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction
techniques. Sediment and erosion control measures will be implemented according to NC requirements, and
approved by NCDEQ prior to implementation. Jurisdictional areas that are not permitted to be impacted and
are adjacent to construction areas will be clearly marked with protection fencing or other similar method to
avoid inadvertent encroachment. Copies of the issued buffer authorization and impact areas will be provided
to the prime contractor and all subcontractors working in or near jurisdictional areas.
2. Buffer Mitigation
2a. Will the project result in an impact within a protected riparian buffer that
❑ Yes ® No
requires buffer mitigation?
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
Required mitigation
(square feet
s uare 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 DMS
❑Yes ❑ No
proposed?
2d. If yes, attach the acceptance letter from the mitigation bank or NC DMS.
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.
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
1 a. Does the project involve an expenditure of public (federal/state/local) funds or the
® Yes ❑ No
use of public federal/state land?
1 b. If you answered "yes" to the above, does the project require preparation of an
El 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
El 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
F1 Yes No
Wetland 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):
�..1SGl DAAC. O 4?' (I Z(
Applicant/Agent's Printed Name Applicant/Agent's Signature Date
(Agent's signature is valid only it an authorization letter from the applicant is provided.)
Send 3 complete sets of this form and accompanying documents to the following:
For government transportation projects sent by
First Class Mail via the US Postal Service:
INC 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
For government transportation projects sent by
delivery service (UPS, FedEx, etc.):
OR INC DWR, Transportation Permitting Unit
512 N. Salisbury Street
Raleigh, INC 27604
For all other projects sent by delivery service
(UPS, FedEx, etc.):
Karen Higgins Karen Higgins
NCDW R — 401 & Buffer Permitting Branch OR NCDWR — 401 & Buffer Permitting Branch
1617 Mail Service Center 512 N. Salisbury Street
Raleigh, INC 27699 - 1617 Raleigh, INC 27604
FORM: BA 10-2013 Page 4 of 4

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Figure 1: Vicinity Map
ECOSYSTEMS
Miles ��i USGS Named Streams
0
0.25
0.5
Crabtree Creek Greenway
July 2017
World Street Map
Wake County, NC

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