20170901 Ver 1_Riparian Buffer Authorization_20170721

CAROLINA
ECOSYSTEMS, INC.
July 19, 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 Middle Creek #106 Boardwalk Repairs
Wake County, North Carolina
Dear Ms. Higgins:
2 0 1 70 9 0 1
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 Middle Creek #106 Boardwalk runs parallel to the left bank of Crabtree Creek and crosses
an unnamed tributary to Crabtree Creek (Figure 2). These streams are located on both the USGS
map and Wake County soil survey map (Figures 3 and 4, respectively), and therefore, are
protected by buffers established through the Neuse Buffer rules.
Repairs for damages caused by past storm events are needed for the boardwalk in two areas
depicted on the attached figures. These repairs would only constitute a minimal change of use
and minimally add new impervious surface area. Therefore diffuse flow provisions are not
proposed. A slight shift of the boardwalk landward will be necessary in the area adjacent to
Crabtree Creek near Ratchford Drive due to severe bank erosion of Crabtree Creek. This will
require minimal impact to Crabtree Creek's buffer. Proposed impacts to riparian buffer zones at
this site are 570 square feet of Zone 1 impacts with no impacts occurring in Zone 2 (see attached
buffer impact drawing). These impacts are classified as "allowable" under the Neuse Buffer
Rules. A similar amount of buffer area closer to Crabtree Creek will be stabilized and allowed to
re -vegetate to wooded buffer.
The other repair site includes replacing the boardwalk bridge over the unnamed tributary. This
will be conducted within the original alignment, without getting into the water, and without
impacting new buffer area. Therefore, no Section 404/401 impacts are anticipated for this
activity, and it is considered exempt from the buffer rule.
The preceding information, along with the enclosed Riparian Buffer Authorization Form,
vicinity map, project map aerial, USGS map, NRCS map, and buffer impact drawings are being
submitted for your review of this project.
Sincerely,
Gregory W. Price
Senior Scientist

DWR 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 Middle Creek #106 Boardwalk Repairs
1 b. County:
Wake
1 c. 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.:
2i. Email address:
I [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:
[e-mail]
FORM: BA 10-2013 Page 1 of 5

B.
Project Information and Prior Project History
1.
Property Identification
la. Property identification no. (tax PIN or parcel ID):
1 b. Site coordinates (in decimal degrees): Latitude: 35.8115 Longitude: -78.6112
1c. 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 1/2 x 11 excerpt from the most recent version of the USGS topographic map indicating the location
of the site
3c. Attach an 8'/2 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:
Approximately 1,300 linear feet.
3e. Explain the purpose of the proposed project:
Repair and replace sections of the boardwalk that have been damaged by past storm events.
3f. Describe the overall project in detail, including the type of equipment to be used:
Repair and replace boardwalk section adjacent to Crabtree Creek by moving it slightly away from the eroding
streambanks of Crabtree Creek (see attached drawing for detail). Replace boardwalk bridge over the
unnamed tributary to Crabtree Creek within the original footprint.
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 Z 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?
0 Yes Z 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
1a. Project is in which protected basin?
® Neuse ❑ Tar -Pamlico
❑ Randleman ❑ Jordan
❑ Catawba
❑ 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
number — impact
Permanent (P)
or Temporary
T
Type of impact Stream name Buffer
(exempt, allowable, mitigation
allowable w/ required?
mitigation)
Zone 1 Zone 2
impact impact
(sq ft) (sq ft)
131 ® P ❑ T Boardwalk
Replacement
Allowable Crabtree Creek ❑ Yes ® No
570 0
B2 -[TP- El T
❑ Yes ❑ No
B3 P T
=Ves ❑ No
B4 ❑ P ❑ T
❑ Yes ❑ No
B5 ❑ P ❑ T
❑ Yes ❑ No
B6 ❑ P El T
❑ Yes EJ No
Total buffer impacts
570 0
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.
The UT to Crabtree Creek site will be repaired within the same footprint without impacting the stream or its
buffers. The Crabtree Creek site will only minimally impact the buffer due to shifting the alignment, however
the old alignment area will be allowed to re -vegetate; so no significant loss of buffer will occur.
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.
FORM: BA 10-2013 Page 3 of 5

2. Buffer Mitigation
All buffer impacts and high ground impacts require diffuse flow or other form of
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
(sqare feet
Zone 1
3 (2 for Catawba)
1 c. If you answered "yes" to the above, has the document been finalized by the State
Zone 2
1.5
Comments:
Total buffer mitigation required:
2. Violations
2c.
If buffer mitigation is required, is payment to a mitigation bank or NC DMS
proposed?
❑ Yes ❑ No
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.
2c. If you answered "yes" to one or both of the above questions, provide an explanation of the violation(s):
2f.
Comments:
E. Diffuse Flow Plan
All buffer impacts and high ground impacts require diffuse flow or other form of
El 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
❑ 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
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):
Applicant/Agent's Printed Name
( I n -Al I A'5g, 0
App ican gent's Signature
(Agent's signature is valid only if an authorization letter from the applicant is provided.)
7-(7 ,1o1
Date
FORM: BA 10-2013 Page 4 of 5

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N Figure l: Vicinity Map
CAROLINA * Buffer Impact Area
ECOSYSTEMS MilesMiddle Creek #106
�i USGS Named Streams Boardwalk Repairs
�.25 0.5
March 2017 World Street Map Ratchford Drive
Wake County, NC

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ECOSYSTEMS Feet IN—, Unnamed Tributary Ratchford Drive
0 100 200 Boardwalk Repair Wake County, NC
Figure 2: Buffer Zone
April 2017 2013 NC Statewide Aerial Photography Impact Map

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10 Boardwalk Repair
Raleigh East (2013) USGS 1:24K Quadrangle Map
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Middle Creek #106
Boardwalk Repairs
Ratchford Drive
Wake County, NC
Figure 3: USGS Map

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