20150114 Ver 1_401 Application_20150115

Dewberry Engineers Inc
2301 Rexwoods Drive, Suite 200
Raleigh, NC 27607 -3366
919.881 9939
919 881 9923 fax
www dewberry com
January 20, 2015
Ms Karen Higgins
Wetlands, Buffer, and Stormwater —
Compliance & Permitting Unit
NC Division of Water Quality
1650 Mail Service Center
Raleigh, North Carolina 27699 -1650
Reference: City of Raleigh ,
Lymington Drive Bank Stabilization
Buffer Permit Application
Dewberry Project No. 50047595
Dear Ms. Higgins:
Enclosed are five copies of an After- the -Fact Pre - Construction Notification (PCN) Permit Application
Package for the City of Raleigh Lymington Drive Bank Stabilization project. For your review we have
enclosed five copies of the PCN Application Form, Attachment A — Additional Information, USGS
Quadrangle Map, site photos, bank stabilization detail, and the $240.00 application fee.
The project titled "Lymington Drive Bank Stabilization" consisted of stabilizing a stream bank at a
location where severe stream bank erosion, due to the February 21, 2014 0 7" storm event, had put a
sanitary sewer line and private property in imminent danger
The construction described in this permit application resulted in approximately 4,478 square feet of Zone
1 and 2,309 square feet of Zone 2 buffer impacts within a maintained utility easement and 135 linear feet
of stream disturbance. The buffer disturbance was a result of easement clearing necessary to access the
repair location
Please contact me with any questions regarding this permit application
Sincerely,
Dewberry Engineers Inc.
NO
Elizabeth B. Steffens, PE
Project Engineer
Enclosures
CC: Sammy Locklear, Public Utilities
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Form Version'1t 4 January 2009
Page 1 of 10
PCN Form — Version 1 4 January 2009
Pre - Construction Notification (PCN) Form
A.
Applicant Information
1
Processing
la
Type(s) of approval sought from the Corps
Section 404 Permit ❑ Section 10 Permit
1b
Specify Nationwide Permit (NWP) number 13 or General Permit (GP) number
1c
Has the NWP or GP number been verified by the Corps?
❑ Yes
Q No
1d
Type(s) of approval sought from the DWQ (check all that apply)
❑ 401 Water Quality Certification — Regular ❑ Non -404 Jurisdictional General Permit
❑ 401 Water Quality Certification — Express N Riparian Buffer Authorization
1 e
Is this notification solely for the record
because written approval is not required?
For the record only for DWQ
401 Certification
0 Yes ❑ No
For the record only for Corps Permit
❑X Yes ❑ No
1f
Is payment into a mitigation bank or in -lieu fee program proposed for
mitigation of impacts? If so, attach the acceptance letter from mitigation bank
or in -lieu fee program
❑ Yes
❑X No
1 g
Is the project located in any of NC's twenty coastal counties If yes, answer 1 h
below
N Yes
X❑ No
1h
Is the project located within a NC DCM Area of Environmental Concern (AEC)?
❑ Yes
Q No
2.
Project Information
2a
Name of project
Lymington Drive Bank Stabilization
2b
County
Wake
2c
Nearest municipality / town
City of Raleigh
RECEIVED"
2d
Subdivision name
Fox Glen
2e
NCDOT only, T I P or state project no
3.
Owner Information
DENR -LAND QUALITY
3a
Name(s) on Recorded Deed
3 1 V(VVI`V�VY , ER 1-ER f Vll I I ❑V1J
3b
Deed Book and Page No
3c
Responsible Party (for LLC if
applicable)
City of Raleigh (Public Utilities Department)
3d
Street address
-' = 1..!'= OW e: CA t,--L < y, z a- e T
3e
City, state, zip
Raleigh, NC 2760•
3f
Telephone no
919 - 996 -4540
3g
Fax no
919-9790 _1 sL c�
3h
Email address
Page 1 of 10
PCN Form — Version 1 4 January 2009

4.
Applicant Information (if different from owner)
4a
Applicant is
❑X Agent ❑ Other, specify
4b
Name
4c
Business name
(if applicable)
4d
Street address
4e
City, state, zip
4f
Telephone no
4g
Fax no
4h
Email address
S.
Agent/Consultant Information (if applicable)
5a
Name
Elizabeth B Steffens, PE
5b
Business name
(if applicable)
Dewberry Engineers Inc (Dewberry)
5c
Street address
2301 Rexwoods Drive Suite 200
5d
City, state, zip
Raleigh, NC 27607
5e
Telephone no
984- 232 -6795
5f
Fax no
919- 881 -9923
5g
Email address
etteffens @dewberry corn
Page 2 of 10

B.
Project Information and Prior Project History
1.
Property Identification
la
Property Identification no (tax PIN or parcel ID)
1737102769 000
1 b
Site coordinates (in decimal degrees)
Latitude 35 8668
Longitude -78 557
1c
Property size
04 acres
2.
Surface Waters
2a
Name of nearest body of water to proposed project
Perry 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
See Attachment A - Additional Information
3b
List the total estimated acreage of all existing wetlands on the property 0
3c
List the total estimated linear feet of all existing streams (Intermittent and perennial) on the property 0
3d Explain the purpose of the proposed project
See Attachment A - Additional Information
3e Describe the overall project in detail, including the type of equipment to be used
See Attachment A - Additional Information
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 p hases In the past?
❑ Yes ❑ No ❑X Unknown
Comments
4b
If the Corps made the jurisdictional determination, what type
of determination was made?
❑ Preliminary ❑ Final
4c
If yes, who delineated the jurisdictional areas?
Name (if known)
Agency /Consultant Company
Other
4d
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 prior phases) In the past?
El Yes ❑ No ❑X Unknown
5b
If yes, explain in detail according to "help file" instructions
6.
Future Project Plans
6a
Is this a phased project?
❑ Yes ❑X No
6b
If yes, explain
Page 3 of 10
PCN Form — Version 1 4 January 2009

C. Proposed Impacts Inventory
1. Impacts Summary
la Which sections were completed below for your project (check all that apply)
❑ Wetlands X❑ Streams — tributaries ❑X Buffers ❑ Open Waters ❑ Pond Construction
2. Wetland Impacts
If there are wetland Impacts proposed on the site, then complete this question for each wetland area impacted
2a
Wetland Impact
number
Permanent (P) or
Temporary T
2b
Type of Impact
2c
Type of wetland
2d
Forested
2e
Type of jurisdiction
Corps (404,10) or
DWQ (401, other)
2f
Area of
Impact
(acres)
W1
Choose one
Choose one
Yes /No
-
W2
Choose one
Choose one
Yes /No
-
W3
Choose one
Choose one
Yes /No
-
W4
Choose one
Choose one
Yes /No
-
W5
Choose one
Choose one
Yes /No
-
W6
Choose one
Choose one
Yes /No
-
2g Total Wetland Impacts:
2h Comments
3. Stream Impacts
If there are perennial or Intermittent stream Impacts (Including temporary Impacts) proposed on the site, then complete this
question for all stream sites Impacted
3a
Stream Impact
number
Permanent (P) or
Temporary (T)
3b
Type of Impact
3c
Stream name
3d
Perennial (PER) or
Intermittent (INT)?
3e
Type of
jurisdiction
3f
Average
stream
width
(feet)
3g
Impact
length
(linear
feet)
S1 P
Stabilization
UT to Perry Creek
INT
DWQ
8
135
S2 -
Choose one
-
S3 -
Choose one
-
S4 -
Choose one
-
S5 -
Choose one
-
S6 -
Choose one
3h Total stream and tributary impacts
135
31 Comments
Stream Crossing will be removed immediately after completion of construction and the area restored to its original conditions
Page 4 of 10
PCN Form — Version 1 4 January 2009

4. Open Water Impacts
If there are proposed impacts to lakes, ponds, estuaries, tributaries, sounds, the Atlantic Ocean, or any other open water of
the U S then individually list all open water impacts below
4a
Open water
impact number
Permanent (P) or
Temporary T
4b
Name of waterbody
(if applicable)
4c
Type of impact
4d
Waterbody
type
4e
Area of impact (acres)
01
Choose one
Choose
02 -
Choose one
Choose
03 -
Choose one
Choose
04
Choose one
Choose
4f Total open water impacts
4g Comments
5. Pond or Lake Construction
If pond or lake construction proposed, the complete the chart below
5a
Pond ID number
5b
Proposed use or
purpose of pond
5c
Wetland Impacts (acres)
5d
Stream Impacts (feet)
5e
Upland
(acres)
Flooded
Filled
Excavated
Flooded
Filled
Excavated
P1
Choose one
P2
Choose one
5f Total:
5g Comments
5h Is a dam high hazard permit required?
❑ Yes ❑ No If yes, permit ID no
51 Expected pond surface area (acres)
5j Size of pond watershed (acres)
5k Method of construction
6. Buffer Impacts (for DWQ)
If project will impact a protected riparian buffer, then complete the chart below If yes, then individually list all buffer impacts
below If any impacts require mitigation, then you MUST fill out Section D of this form
6a Project is in which protected basin?
❑X Neuse ❑ Tar - Pamlico ❑ Catawba ❑ Randleman ❑ Other
6b
Buffer Impact
number —
Permanent (P) or
Temporary T
6c
Reason for impact
6d
Stream name
6e
Buffer
mitigation
required?
6f
Zone 1
impact
(square
feet )
6g
Zone 2
impact
(square
feet
61 P
Construction Access
UT of Perry Creek
No
4,478
2,309
B2
Yes /No
B3
Yes /No
B4
Yes /No
B5
Yes /No
B6
Yes /No
6h Total Buffer Impacts:
4,478
2,309
61 Comments
Page 5 of 10

D.
Impact Justification and Mitigation
1.
Avoidance and Minimization
la Specifically describe measures taken to avoid or minimize the proposed impacts in designing project
See Attachment A- Additional Information
lb Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques
Impacts to area were minimized by confining work area to minimum extents possible and using erosion control devices A pump- around or coffer dams
was used for the duration of the whole project to ensure all work occurs in the dry
2.
Compensatory Mitigation for Impacts to Waters of the U.S. or Waters of the State
2a
Does the project require Compensatory Mitigation for
impacts to Waters of the U S or Waters of the State?
❑ Yes ❑X No
2b
If yes, mitigation is required by (check all that apply)
❑ DWQ ❑ Corps
2c
If yes, which mitigation option will be used for this
project?
❑ Mitigation bank
❑ Payment to in -lieu fee program
❑ Permittee Responsible Mitigation
3.
Complete if Using a Mitigation Bank
3a
Name of Mitigation Bank
3b
Credits Purchased (attach receipt and letter)
Type Choose one
Type Choose one
Type Choose one
Quantity
Quantity
Quantity
3c Comments
4.
Complete if Making a Payment to In -lieu Fee Program
4a
Approval letter from in -lieu fee program is attached
❑ Yes
4b
Stream mitigation requested
linear feet
4c
If using stream mitigation, stream temperature
Choose one
4d
Buffer mitigation requested (DWQ only)
square feet
4e
Riparian wetland mitigation requested
acres
4f
Non - riparian wetland mitigation requested
acres
4g
Coastal (tidal) wetland mitigation requested
acres
4h
Comments
5.
Complete if Using a Permittee Responsible Mitigation Plan
5a
If using a permittee responsible mitigation plan, provide a description of the proposed mitigation plan
Page 6 of 10
PCN Form — Version 1 4 January 2009

6. Buffer Mitigation (State Regulated Riparian Buffer Rules) — required by DWQ
6a Will the project result in an impact within a protected riparian buffer that requires
buffer mitigation?
❑ Yes OX No
6b If yes, then identify the square feet of impact to each zone of the riparian buffer that requires mitigation Calculate the
amount of mitigation required
Zone
6c
Reason for impact
6d
Total impact
(square feet)
Multiplier
6e
Required mitigation
(square feet)
Zone 1
3 (2 for Catawba)
Zone 2
1 5
6f Total buffer mitigation required:
6g If buffer mitigation is required, discuss what type of mitigation is proposed (e g , payment to private mitigation bank,
permittee responsible riparian buffer restoration, payment into an approved in -lieu fee fund)
6h Comments
Page 7 of 10

E.
Stormwater Management and Diffuse Flow Plan (required by DWQ)
1.
Diffuse Flow Plan
1 a
Does the project Include or Is It adjacent to protected riparian buffers identified
X❑ Yes ❑ No
within one of the NC Riparian Buffer Protection Rules?
lb
If yes, then Is a diffuse flow plan Included? If no, explain why
Project did not alter diffuse flow patterns
❑ Yes X❑ No
2.
Stormwater Management Plan
2a
What is the overall percent Imperviousness of this project?
0
2b
Does this project require a Stormwater Management Plan?
❑ Yes ❑X No
2c
If this project DOES NOT require a Stormwater Management Plan, explain why
Disturbed area was less than 1 acre
2d
If this project DOES require a Stormwater Management Plan, then provide a brief, narrative description of the plan
2e
Who will be responsible for the review of the Stormwater Management Plan?
3.
Certified Local Government Stormwater Review
3a
In which local government's jurisdiction is this project?
City of Raleigh
❑ Phase II
❑ NSW
3b
Which of the following locally - Implemented stormwater management programs
❑ USMP
apply (check all that apply)
❑ Water Supply Watershed
❑X Other None
3c
Has the approved Stormwater Management Plan with proof of approval been
❑ Yes ❑ No
attached?
4.
DWQ Stormwater Program Review
❑Coastal counties
❑HQW
4a
Which of the following state - implemented stormwater management programs apply
❑ORW
(check all that apply)
E] Session Law 2006 -246
X❑Other None
4b
Has the approved Stormwater Management Plan with proof of approval been
❑ Yes ❑ No
attached?
5.
DWQ 401 Unit Stormwater Review
5a
Does the Stormwater Management Plan meet the appropriate requirements?
❑ Yes ❑ No
5b
Have all of the 401 Unit submittal requirements been met?
❑ Yes ❑ No
Page 8 of 10
PCN Form — Version 1 4 January 2009

F.
Supplementary Information
1.
Environmental Documentation (DWQ Requirement)
1a
Does the project involve an expenditure of public (federal /state /local) funds or the
❑X Yes
❑ No
use of public (federal /state) land?
lb
If you answered "yes" to the above, does the project require preparation of an
environmental document pursuant to the requirements of the National or State
❑ Yes
X❑ No
(North Carolina) Environmental Policy Act (NEPA/SEPA)?
1c
If you answered "yes" to the above, has the document review been finalized by the
State Clearing House? (If so, attach a copy of the NEPA or SEPA final approval
❑ Yes
❑ No
letter )
Comments
2.
Violations (DWQ Requirement)
2a
Is the site in violation of DWQ Wetland Rules (15A NCAC 2H 0500), Isolated
Wetland Rules (15A NCAC 2H 1300), DWQ Surface Water or Wetland Standards,
❑Yes
❑X No
or Riparian Buffer Rules (15A NCAC 2B 0200)?
2b
Is this an after - the -fact permit application?
X❑Yes
❑ No
2c
If you answered "yes" to one or both of the above questions, provide an explanation of the violation(s)
Stream bank erosion after a storm event put the sanitary sewer and surrounding private property in imminent danger A construction crew was
mobilized
to stabilize the bank in accordance with WQC #3885 and prevent further damage to the sanitary sewer infrastructure
3.
Cumulative Impacts (DWQ Requirement)
3a
Will this project (based on past and reasonably anticipated future Impacts) result in
El Yes
X❑ No
additional development, which could Impact nearby downstream water quality?
3b
If you answered "yes" to the above, submit a qualitative or quantitative cumulative Impact analysis in accordance with the
most recent DWQ policy If you answered "no," provide a short narrative description
Project did not alter the capacity of the sanitary sewer collection system
4.
Sewage Disposal (DWQ Requirement)
4a Clearly detail the ultimate treatment methods and disposition (non - discharge or discharge) of wastewater
generated from
the proposed project, or available capacity of the subject facility
No
wastewater was generated during this project
Page 9 of 10
PCN Form —Version 1 4 January 2009

5. Endangered Species and Designated Critical Habitat (Corps Requirement)
5a Will this project occur in or near an area with federally protected species or
❑ Yes ❑ No
habitat?
5b Have you checked with the USFWS concerning Endangered Species Act
❑ Yes ❑ No
impacts?
5c If yes, indicate the USFWS Field Office you have contacted
-
5d What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical
Habitat?
6. Essential Fish Habitat (Corps Requirement)
6a Will this project occur in or near an area designated as essential fish habitat?
❑ Yes ❑ No
6b What data sources did you use to determine whether your site would impact Essential Fish Habitat?
7. Historic or Prehistoric Cultural Resources (Corps Requirement)
7a Will this project occur in or near an area that the state, federal or tribal
governments have designated as having historic or cultural preservation
❑ Yes ❑ No
status (e g , National Historic Trust designation or properties significant in
North Carolina history and archaeology)?
7b What data sources did you use to determine whether your site would impact historic or archeological resources?
8. Flood Zone Designation (Corps Requirement)
8a WIII this project occur in a FEMA- designated 100 -year floodplain?
❑X Yes ❑ No
8b If yes, explain how project meets FEMA requirements
This project did not decrease the capacity of the floodplain and maintained flow patterns
8c What source(s) did you use to make the floodplain determination?
FEMA FIRM Map #3720173700J Effective May 2, 2006
Ruffin L. Hall
k
City Manager
City of Raleigh
Post Office Box 590
Rnleiu_h North C'nrnlinn 27602
Applicant/Agent's Printed Name
Date
I
APP �a' ;;�%'�
(Agent's s ur i Sh n1y' f °arVct tip
letter from t i roVi
NZ7
Page 10 of 10

Attachment A —Additional Information
3.3.a Describe existing conditions and land use:
A fallen tree had blocked part of the stream, diverting water toward the north bank This led to extensive stream
bank erosion which was encroaching on the sanitary sewer line, manhole, and property owner's yard A storm
event on February 21, 2014 resulted in a washout event that put the sanitary sewer line in imminent danger and
damaged surrounding private property
3.3.d Explain the purpose of the proposed project
The purpose of the project was to stabilize the stream bank in the immediate vicinity of a sanitary sewer line and
manhole that have become threatened due to stream bank erosion and to prevent further damage to sanitary
sewer infrastructure and neighboring private property
3.3.e. Detailed project description including equipment to be used
Erosion of the stream bank threatened the integrity of a sanitary sewer line and manhole Construction activity
consisted of clearing the sanitary sewer easement for access to the project location The eroded bank was filled in
and Rip -Rap was placed along the stream bank and around the manhole to prevent further erosion in this area and
to replicate the contours of the un- eroded stream bank The bank stabilization detail that was used for this project
is attached Conventional construction equipment (hydraulic excavators and dumptrucks) was used The buffer
disturbance was seeded and mulched immediately after construction completion A pump around or coffer dam
was used during construction to ensure all work occurred in the dry
D.1.a Specifically describe measures taken to avoid or minimize the proposed impacts in designing project.
The placement of fill and rip -rap was limited to the area immediately surrounding the sanitary sewer line and
manhole A pump- around or coffer dam was used during construction to ensure all work occured in the dry After
construction was completed the disturbed area was mulched and reseeded

Lymington Drive Bank Stabilization:
Figure 1: Facing south. Photo taken on 02/26/2014. Fallen
tree has obstructed the flow path of water, diverting it into
the north bank.
Figure 2: Facing east. Photo taken on 02/25/2014.
Approximately 135 LF of stream bank had been
eroded. Stream has moved approximately 20 ft to the
north. Property owner's fence was damaged and
integrity of sanitary sewer line was threatened.
Page 1 of 3

Lymington Drive Bank Stabilization:
Figure 3: Facing east. Photo taken on 02/26/2014. Stream
Bank erosion is encroaching on the sanitary sewer
infrastructure and property owner's yard.
Figure 4: Facing west. Photo taken on 02/26/2014. Stream
Bank erosion is encroaching on the sanitary sewer
infrastructure and property owner's yard.
Page 2 of 3

Lymington Drive Bank Stabilization:
Figure 5: Facing east. Photo taken November 2014. Completed
streambank stabilization and buffer re- seeding /mulching of north bank of
UT to Perry Creek.
Page 3 of 3

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SCALE: 1" = 50'
50' 25' 0' 50' 100'
to- ® DATE TITLE SHEET NO.
Dewberry 12/30/2014 LYMINGTON DRIVE BANK STABILIZATION
Dewberry Engineers, Inc.
2301 REXWOODS DRIVE PROJ. NO. SITE PLAN 1
SUITE 200
RALEIGH, NC27B07 gg274057
PHONE 919 Sal 993g 6324 LYMINGTON DRIVE, RALEIGH, NC 27616
NCRELS A' F -0929

APPROXIMATE EXISTING GROUND
TIE TO GRADE
C A 91 '�Zo /i
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• 030966 •
&-Maur 121
NOTES
1. RIP RAP AND GEOTEXTILE ALONE SHOULD NOT BE USED ON
SLOPES GREATER THAN 2H-1V
2. ON SLOPES BETWEEN 2H:1V AND 1.5H:1V RIP RAP MAY BE
BEDDED IN 6" OF #57 STONE. CONSULT
ENGINEER PRIOR
INSTALLATION.
3 THICKNESS OF RIP RAP (T) SHOULD BE NO LESS THAN 1.5
X D50 (APPROXIMATELY 21 " FOR CLASS
II). Cl)
0
4. DEPTH OF THE TOE SHOULD BE APPROXIMATELY 1.5 X THICKNESS (APPROXIMATELY 30" FOR CLASS
II) z
m
5. RIP RAP SLOPE PROTECTION IS MODIFIED FROM VDH &T AND
NCDENR LAND QUALITY SECTION EROSION
AND
SEDIMENT CONTROL DESIGN MANUAL.
z
tv
0
6. BOULDERS 3 -4 FEET IN DIAMETER IN LOWER 1/2 AND 1 -2
FEET DIAMETER IN UPPER 1/2
zq
m
IN,'a a Dewberry ®DATE TITLE SHE T NO
'x•9.1 12/30/2014 LYMINGTON DRIVE BANK STABILIZATION
'�'� Dewberry Engineers, Inc 6324 LYMINGTON DRIVE 2
2301 REXWOODS DRIVE PROJ No
SUITE 200 RALEIGH, NC 27616
RALEIGH NC2 99274057
PHONE [phone]
FAX [phone]
BANK STABILIZATION DETAIL