20181725 Ver 1_401 Application_20210218

434 Fayetteville Street
Suite 1500
Raleigh, NC 27601
Main-919-836-4040
February 17th, 2021
Ms. Stephanie Goss
NCDEQ, Department of Water Resources
512 N. Salisbury St.
Raleigh, NC 27604
[phone]
RE: PCN Application Package for 0.09 acres (3,917 square feet) of Buffer Impacts and 207 linear feet of
Stream Impacts for Stream Bank Stabilization Repair along an UT to Mine Creek in Raleigh, NC
Dear Ms. Goss;
As discussed last fall via email, this after -the -fact permit covers bank stabilization repair along a disturbed
segment of an Unnamed Tributary to Mine Creek (part of the Neuse River Basin). Bank stabilization had
previously been permitted, designed, and constructed along this section (completed in Spring 2020). This repair
plan addresses storm damage to those stabilization measures. The repair methods include:
1. 30 linear feet of footer repair for previously installed bank protection
2. 20 linear feet of additional boulder toe protection
3. 35 linear feet of constructed riffle to promote vertical stability
The associated impacts include approximately 100 linear feet of permanent stream impacts (207 linear feet of
total stream impacts) and 2,006 square feet of permanent buffer impacts (3,917 square feet of total buffer
impacts). After construction, the site will be returned to pre -construction conditions where feasible and will be
replanted with appropriate vegetation.
It is WSP's pleasure to submit this PCN application package on behalf of the City of Raleigh. Please feel free to
call at [phone] or email at Jon. [e-mail] if you have any questions or comments.
Sincerely,
w
Jon Becker, PE
Note: Full-size construction plans measure 24x36 inches, as such 11 x17 copies provided are not truly "half-size".

O�O� W A rt'9
Office Use Only:
Corps action ID no.
DWQ project no.
Form Version 1.4 January 2009
A.
Pre -Construction Notification (PCN) Form
Applicant Information
1.
la.
Processing
Type(s) of approval sought from the Corps: ❑X Section 404 Permit ❑ Section 10 Permit
1b. Specify Nationwide Permit (NWP) number: 13 or General Permit (GP) number:
1 c.
Has the NWP or GP number been verified by the Corps? (tentatively)
❑X Yes ❑ No
1 d.
Type(s) of approval sought from the DWQ (check all that apply):
FX1 401 Water Quality Certification — Regular ❑ Non-404 Jurisdictional General Permit
❑ 401 Water Quality Certification — Express ❑ 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:
❑ Yes ❑X No
For the record only for Corps Permit:
❑ Yes ❑X 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
1g.
Is the project located in any of NC's twenty coastal counties. If yes, answer 1h
below.
❑ Yes ❑X No
1 h.
Is the project located within a NC DCM Area of Environmental Concern (AEC)?
❑ Yes ❑X No
2.
Project Information
2a.
Name of project:
Petworth Court Stream Bank Stabilization - Repair
2b.
County:
Wake
2c.
Nearest municipality / town:
Raleigh
2d.
Subdivision name:
Stonehenge X
2e.
NCDOT only, T.I.P. or state project no:
N/A
3.
Owner Information
3a.
Name(s) on Recorded Deed:
See PCN Form Supplemental Attachment
3b.
Deed Book and Page No.
See PCN Form Supplemental Attachment
3c.
Responsible Party (for LLC if
applicable):
See PCN Form Supplemental Attachment
3d.
Street address:
See PCN Form Supplemental Attachment
3e.
City, state, zip:
Raleigh, NC 27615
3f.
Telephone no.:
2000 Petworth Ct: [phone] 2001 Petworth Ct: [phone]
3g.
Fax no.:
N/A
3h.
Email address:
2000 Petworth Ct: [e-mail] 2001 Petworth Ct: [e-mail]
Page 1 of 10
PCN Form — Version 1.4 January 2009

4.
Applicant Information (if different from owner)
4a.
Applicant is:
❑ Agent ❑X Other, specify: City of Raleigh Engineering Services
4b.
Name:
Wayne Miles, PE
4c.
Business name
(if applicable):
City of Raleigh Engineering Services Stormwater Management
4d.
Street address:
127 West Hargett Street, 8th Floor
4e.
City, state, zip:
Raleigh, NC, 27601
4f.
Telephone no.:
[phone]
4g.
Fax no.:
N/A
4h.
Email address:
[e-mail]
5.
Agent/Consultant Information (if applicable)
5a.
Name:
Jon Becker
5b.
Business name
(if applicable):
WSP
5c.
Street address:
434 Fayetteville Street, Suite 1500
5d.
City, state, zip:
Raleigh, NC, 27601
5e.
Telephone no.:
[phone]
5f.
Fax no.:
N/A
5g.
Email address:
[e-mail]
Page 2 of 10

B.
Project Information and Prior Project History
1.
Property Identification
1a.
Property identification no. (tax PIN or parcel ID):
0797794326 & 0797794137
1 b.
Site coordinates (in decimal degrees):
Latitude: 35.891 Longitude:-78.671
1 c.
Property size:
p Y
acres Total property acreage: 1.47 acres
Pr6ect limits: 0.14 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 (03020201)
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 PCN Form Supplemental Attachment
3b.
List the total estimated acreage of all existing wetlands on the property: 0.02
3c.
List the total estimated linear feet of all existing streams (intermittent and perennial) on the property: 515
3d. Explain the purpose of the proposed project:
See PCN Form Supplemental Attachment
3e. Describe the overall project in detail, including the type of equipment to be used:
See PCN Form Supplemental 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 priorphases) in thepast?
❑ Yes 0 No ❑ 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): N/A
Agency/Consultant Company:
Other: N/A
4d.
N/A
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?
0 Yes ❑ No ❑ Unknown
5b. If yes, explain in detail according to "help file" instructions.
Initial construction was approved by the USACE on 01/25/2019 (ID# 2018-02284) and the NCDEQ on 01/29/2019
(DWR# 18-1725). The original permit package was signed/dated 12/07/2018. The pre -filing meeting request is at-
tached below as Appendix D. The original permit approvals are attached as Appendix E.
6.
Future Project Plans
6a.
Is this a phased project?
❑ Yes 0 No
6b.
N/A
If yes, explain.
Page 3 of 10
PCN Form — Version 1.4 January 2009

C. Proposed Impacts Inventory
1. Impacts Summary
1 a. 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.
2b.
2c.
2d.
2e.
2f.
Wetland impact
Type of impact
Type of wetland
Forested
Type of jurisdiction
Area of
number
Corps (404,10) or
impact
Permanent (P) or
DWQ (401, other)
(acres)
Temporary T
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:
Delineated wetlands were not be impacted by this project. The one delineated wetland in the property is outside the proposed limits of disturbance.
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.
3b.
3c.
3d.
3e.
3f.
3g.
Stream impact
Type of impact
Stream name
Perennial (PER) or
Type of
Average
Impact
number
intermittent (INT)?
jurisdiction
stream
length
Permanent (P) or
width
(linear
Temporary (T)
(feet)
feet)
S1 T
Construction Access
UT to Mine Creek
PER
Corps
21
107
S2 P
Bank Stabilization
UT to Mine Creek
PER
Corps
9
65
S3 P
Fill
UT to Mine Creek
PER
Corps
18
35
S4
Choose one
-
S5 -
Choose one
-
S6
Choose one
-
3h. Total stream and tributary impacts
207
3i. Comments:
The originally permitted/constructed project was damaged by severe summer storm events. A majority of the impacts from the repair project overlap with the origi-
nally permitted impacts. New impacts are due to the extension of the imbricated rock bank protection and construction of a riffle. The original permit approval is
included as an attachment (Appendix E). The width listed for bank stabilization is not the total stream width.
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 indivi ually 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
O2
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: N/A
5h. Is a dam high hazard permit required?
❑ Yes ❑X No If yes, permit ID no:
5i. Expected pond surface area (acres):
N/A
5j. Size of pond watershed (acres):
N/A
5k. Method of construction:
N/A
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 vou 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 T
Construction/Access
UT to Mine Creek
No
1,505
B2 P
Bank Grading/Stabilization
UT to Mine Creek
No
2,006
B3 T
Construction/Access
UT to Mine Creek
No
406
B4 -
No
B5
No
B6
No
6h. Total Buffer Impacts:
3.511
406
6i. Comments: Temporary buffer impacts will be returned to their pre -construction conditions. Permanent buffer impacts consist of bank grading and
boulder installation. All vegetated areas will be replanted with a mix of woody and herbaceous species.
Page 5 of 10

D.
Impact Justification and Mitigation
1.
Avoidance and Minimization
la.
See
Specifically describe measures taken to avoid or minimize the proposed impacts in designing project.
PCN Form Supplemental Attachment
1 b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques.
See PCN Form Supplemental Attachment
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: N/A
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:
N/A linear feet
4c.
If using stream mitigation, stream temperature:
Choose one
4d.
Buffer mitigation requested (DWQ only):
N/A square feet
4e.
Riparian wetland mitigation requested:
N/A acres
4f.
Non -riparian wetland mitigation requested:
N/A acres
4g.
Coastal (tidal) wetland mitigation requested:
N/A acres
4h. Comments: N/A
5.
Complete if Using a Permittee Responsible Mitigation Plan
5a.
N/A
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
Yes ❑X No
buffer mitigation?
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.
6c.
6d.
6e.
Zone
Reason for impact
Total impact
Multiplier
Required mitigation
(square feet)
(square feet)
Zone 1
N/A
N/A
3 (2 for Catawba)
N/A
Zone 2
N/A
N/A
1.5
N/A
6f. Total buffer mitigation required:
N/A
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).
N/A
N/A
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?
1 b.
If yes, then is a diffuse flow plan included? If no, explain why.
The project did not result in new/additional point sources, and therefore a diffuse flow plan is not
❑ Yes X❑ No
applicable.
2.
Stormwater Management Plan
2a.
What is the overall percent imperviousness of this project?
13 % (existing impervious)
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:
The proposed project did not result in the creation of new impervious area or increased stormwater discharge.
Existing impervious area will only be
traversed for access. As such, a stormwater management plan is not applicable.
2d.
If this project DOES require a Stormwater Management Plan, then provide a brief, narrative
description of the plan:
N/A
2e.
Who will be responsible for the review of the Stormwater Management Plan?
N/A
3.
Certified Local Government Stormwater Review
3a.
In which localgovernment's jurisdiction is thisproject?
Raleigh, NC
❑ Phase II
0 NSW
3b.
Which of the following locally -implemented stormwater management programs
❑ USMP
apply (check all that apply):
❑ Water Supply Watershed
❑ Other:
3c.
Has the approved Stormwater Management Plan with proof of approval been
❑ Yes ❑X No / NA
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):
❑Session Law 2006-246
❑Other:
4b.
Has the approved Stormwater Management Plan with proof of approval been
❑ Yes ❑X No / NA
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)
1 a. Does the project involve an expenditure of public (federal/state/local) funds or the
0 Yes ❑ No
use of public (federal/state) land?
1 b. 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 0 No
(North Carolina) Environmental Policy Act (NEPA/SEPA)?
1 c. 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.) N/A
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,
El Yes X❑ No
or Riparian Buffer Rules (15A NCAC 2B .0200)?
2b. Is this an after -the -fact permit application?
OYes ❑ No
2c. If you answered "yes" to one or both of the above questions, provide an explanation of the violation(s):
As discussed via email, concerns with rapid erosion, vegetative failure, and general instability motivated the City to conduct the site repairs prior to
submitting a permit. The repair plan was discussed with representatives of NCDEQ and USACE. Based on those discussions, the City of Raleigh
agreed that a new/revised permit would be required. Given the time -sensitive site conditions, the project progressed with construction assuming that
an after -the -fact permit would be acceptable.
3. Cumulative Impacts (DWQ Requirement)
3a. Will this project (based on past and reasonably anticipated future impacts) result in
❑Yes 0 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.
The intent of the project is to stabilize an existing section of stream. The immediately adjacent area is built -out, and the project will not have a direct
effect on nearby development. The completed stabilization will not provide incentive for any new development.
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 sewer discharge will be affected/adjusted by the 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
❑X Yes ❑ No
habitat?
5b. Have you checked with the USFWS concerning Endangered Species Act
❑ Yes ❑X 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?
See PCN Form Supplemental Attachment
6. Essential Fish Habitat (Corps Requirement)
6a. Will this project occur in or near an area designated as essential fish habitat?
❑ Yes ❑X No
6b. What data sources did you use to determine whether your site would impact Essential Fish Habitat?
NOAA Essential Fish Mapper: http://www.habitat.noaa.gov/protection/efh/efhmapper/
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 ❑X 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?
Per the SHPO on-line mapper (http://gis.ncdcr.gov/hpoweb/) no sites listed on the National Register of Historic Places or eligible for listing are located
in the project area.
8. Flood Zone Designation (Corps Requirement)
8a. Will this project occur in a FEMA-designated 100-year floodplain?
❑ Yes ❑X No
8b. If yes, explain how project meets FEMA requirements:
N/A
8c. What source(s) did you use to make the floodplain determination?
NC FRIS, Panel #0797
Wayne Miles
2/3/2021
Applicant/Agent's Printed Name
Date
Applicant/ ent's Signature
(Agent's signature is valid only if an authorization
letter from the applicant is provided.)
Page 10 of 10

PCN FORM SUPPLEMENTAL ATTACHMENT
PETWORTH COURT STREAM BANK STABILIZATION
Wayne Miles, PE
City of Raleigh Engineering Services
127 West Hargett Street, 811, Floor
Raleigh, NC 27601
[phone]
Wa ne.Miles(a)raleighnc.gov
A; 3A-3D & B; IA) PROPERTY INFORMATION
Street Address Owner
Petworth Ct. 2000 Creech, Terry P
Creech, Wanda
Petworth Ct. 2001 Couch, Steven E
Couch, Elizabeth A
DB PG (DB) BM PG (BM) PIN
3641 514 1985 221 0797794326
3600 907 1985 221 0797794137
B; 3A) EXISTING CONDITIONS
The existing stream channel lies to the rear of the residences at 2000 and 2001 as seen below.
The residential structures do not encroach upon the limits of flood prone soils, as identified by
Wake County iMaps®.
Figure 1: 2000 & 2001 Petworth Court Site Map (Wake County iMaps')
The relevant properties are bordered by a variable (>30 ft) sanitary sewer easement to the rear,
are divided by a 30 ft drainage and sanitary sewer easement, and contain a 10 ft drainage
easement adjacent to the stream.

The contributing drainage area to the relevant stream section covers 0.4 square miles and is
almost completely developed. The online USGS StreamStats application reports 96%
developed urban land, of which, 18% is impervious. The developed urban land is almost
entirely residential, with minimal contributions from commercial/industrial use.
Mine Creek is classified by NCDEQ as a class C, nutrient sensitive stream within the Neuse river
basin. As such, Mine Creek and its jurisdictional tributaries, are subject to the Neuse River
Buffer Rules.
The degrading stream banks which required stabilization are located adjacent to the rear
landscaping, and threatened the integrity of the resident's yards, decks, and home foundation.
The banks had approached within 15 feet of the residential structures and displayed evidence
of active and rapid erosion. The City of Raleigh received agency authorization to perfom bank
stabilization which included the installation of an imbricated rock wall along the western bank
and regrading of the eastern bank at a lower elevation and flatter slope and replanting wiith
live stakes.
After project construction was completed in March 2020, several severe rainfall events in the
spring and summer resulted in additional bank erosion and channel migration adjacent to the
project area. Without time for vegetation to establish a root system after construction, the
channel has migrated much more quickly than anticipated. The rainfall and resultant stream
flows resulted in bank erosion and general channel instability. To address these issues and
prevent further damage, additional improvements were made that included approximately 30
feet each of rebuilt Tooter for imbricated rock, additional/extended imbricated rock, and
constructed riffle. Disturbed areas and soil lifts have been replanted with live stakes and bare
root seedlings.
A wetland delineation performed by WSP on August 30th, 2018, identified only one small
wetland area. The delineated wetland is linear, and corresponds with a small, depressed
channel. The wetland is displayed on the survey map in Appendix B (WF WA-1 to WA-15).
Photos of the pre -construction site conditions are included within Appendix C
B, 3D) PROJECT PURPOSE
The project improvements were constructed to repair damage by several severe storm events
that occurred shortly after the original project was constructed. These improvements were
necessary to ensure long-term stability of the bank stabilization measures and were designed
to reduce shear stress along the stream banks and provide a stable channel section. As a
secondary goal, the methods used for bank stabilization provide improvements to habitat,
water quality, and vegetative health and diversity.
The rebuilt wall footer and wall extension provide additional protection from scour and near -
bank stress while the constructed riffle serves as a natural grade control structure.
-­, .-cWECTANDEQUIPMENT
The design involved the rebuilding of the imbricated rock bank footer and backfill, and
repairing the existing bank protection. At this time, the bank protection was extended 30
additional linear feet to repair and protect a newly eroded segment of streambank. The total
length of impacts (temporary and permanent) will cover 207 LF. A constructed riffle measuring
approximately 35 LF was installed adjacent to the downstream end of the imbricated rock
bank protection. Temporary stream flow impacts were unavoidable, therefore a pump -around
system was installed so that construction activity could occur in dry conditions. Construction

access occurred primarily along one residential driveway and an existing drainage and sanitary
sewer easement. Once access to the stream bed was no longer required, the disturbed areas
were replanted with appropriate, native vegetation. A single small excavator was used for
excavation, boulder placement, and grading.
Due to the pattern of the existing stream alignment, and the height of the existing bank,
imbricated rock walls were utilized along the banks from 1.5-2.5 feet in height. The rock is
required based on the vertical and horizontal constraints of the existing site. There was not
sufficient room to construct a stable slope of natural soil. Even soil lifts placed at a slope of 1.5:1
would result in additional loss of yard/landscaping and would move the top of bank closer to
the existing residential structures.
Toe protection and soil lifts were used in conjunction with the walls to minimize the amount of
rock required and provide stable bank geometry. All rock was designed and installed to
withstand the shear stress within the channel, and to minimize the potential for future erosion.
IA) PROJECT; MINIMIZE DESIGNED IMPAC
Environmental impacts will be limited to bank stabilization and those associated with the
constructed riffle. Total fill placement has been estimate at approximately 65 CY, spread
across >100 LF of bank stabilized. Fill material was utilized behind rock walls and above rock
toe. Fill placed in the active stream bed outside of the constructed riffle, was primarily limited
to temporary stone for the pump -around. The channel centerline and thalweg locations will
not be significantly modified, except as influenced by the installation of the imbricated rock
wall.
Permanent jurisdictional impacts will be limited to 100 LF for the repair and extension of the
imbricated wall and addition of the constructed riffle. Temporary impacts to the stream bed
(107 LF) and stream flow were only as needed for construction, and minimized where feasible.
Temporary stream buffer impacts were unavoidable, but were minimized, and restored to a
vegetated state promptly after completion of construction.
C, IB) PROJEC I, iINIMIZE CONSTRUCTION IMPAC
Methods of access and construction were selected to minimize impacts to in situ soil
conditions and to existing trees. Where feasible, existing vegetation was maintained.
Lightweight equipment was used to prevent excessive soil compaction and harm to existing
root mass. The same route was utilized for construction access so that no additional
vegetation needed to be removed (compared to initial construction). The route also avoided
the delineated wetland area.
F; 5D) DATA SOURCES; ENDANGERED SPECIES AND/OR CRITICAL HABITAT
The U.S. Fish and Wildlife Service Information for Planning and Conservation
(htt s: lecos.fws.gov/ipacA identifies the following federal threatened and endangered species
for Wake County:
Threatened
Yellow Lance (Elliptio lanceolata): This project is located in a basin outside of
the species current range.

0 Proposed Threatened
o Atlantic Pigtoe (Fusconaia masoni): Existing water quality is likely not sufficient
to provide suitable habitat for the Atlantic pigtoe. Additionally, this project will
not result in permanent loss of habitat.
o Neuse River Waterdoa (Necturus lewisi): The size and flow velocities of the
stream and are likely not sufficient to proide suitable habitat for the Neuse River
waterdog. Additionally, this project will not result in permanent loss of habitat.
• Endangered
o Red -Cockaded Woodpecker (Picoides borealis): No suitable habitat is present in
the project area. The project will have no effect on the red -cockaded
woodpecker.
o Dwarf Wedgemussel (Alasmidonta heterodon): This project will not result in
permanent loss of habitat.
o Tar River Spinymussel (Elliptio steinstansana): This project is located in a basin
outside of the species current range.
o Michaux's Sumac (Phus michauxii): No suitable habitat is present in the project
area. The project will have no effect on Michaux's Sumac.
Proposed Endangered
o Carolina Madtom (Noturus furiosus): The streambed substrate prior to
construction and the nature the of stream flows are likely not sufficient to
provide suitable habitat for the Carolina madtom. Additionally, this project will
not result in permanent loss of habitat.
No critical habitat is present within the project area.

APPENDIX
I3
IMPACT
EXHIBITS

\ \ \ 1
12
8�R E E *4111b `. 1
1dAR
Q Q 12AR\ ` J \ __--DELINEATED WETLAND
I1
0 �AR � � � � � (SHADED GRAY) \\r
I
tiPT 8AR
S I '0
ED II ARJ hJ _
12PT 6TYEE % /
Z 1 \�TF EE
6TRE 8TR 1 ( ! I 6TREE ) 10AR I 1
W 6TREE b 1 I �' 1TAR \ \ 8TREE� I
1
m 18AF i Q '12AR
6TREE
EXISTING IMBRICATED ROCK
WALL; REINFORCE WALL TOE
WITH RIPRAP (30 LF)'�O �a, OAR _ u r�
ti� CMG I z�"
O� r A 6L �� 6TRE
soAR ) /"
24A
6 ' 1 I \ RIFFLE ( 0NSTALL 0F) CONSTRUCTED
\' EXISTING IMBRICATED ROCK IL �I i
12A
WALL; REBUILD DEEPER (I ' 1
\'\ R I
WALL FOOTER (30 LF) \� 2 A 24 ! 20' TWN
— ` ZONE 182 I
14AR ` Q 8TREE I
V10
EXTEND IMBRICATE , 12A \ I
ROCK (20 LF) Q 6TREE '
L'BUFF R
1 JAR 1 E
1SA � q� 6TR'14AR'S
• s
`PROPOSED LIMIT S S 12T E
OF DISTURBANCE
F / i 0 8�1� 1uTREE
�1� ,( 12TREE �\
6T �E 116
o /
�(8TRE 6TREE 12TR
�10 12 EE
16AR
14TREE
of �L 1610 1'• �1 166P,R 12T E �.
A1
6TREE 0 1 2EE
I� 8TREE61HEE 6TREE
1111 0
) i - 6TREE
\ \ I 12FlR `
1J �10 '1
11 I \ �81� \ 18AR
` I 18 II \ \ 0 AR
C� 1JA
18TR� \ _
GRAPHIC SCALE �,� EE TREE
40 0 20 40 1 E E L- 5o
g
'Limits of disturbance are sli htl
10TR_ Zar3\
( pi FED' f different than the limits show on the — Y _ t2 rRl ! STR 1.tAR
1 inch - 40 to construction plans based on a field \ \ � i2A \ 7
change required for access and I ,
final grading. 1 61 REE
© WSP USA INC. ALL RIGHTS ARE RESERVED. ANY POSSESSION. REPRODUCTION OR OTHER USE OF THIS DOCUMENT WITHOUT PRIOR PERMISSION FROM WSP, IS EXPRESSLY PROM IBITED
PROJECT#'. DATE'. 01125021
DRAWNBY. JWB CHECKED BY. AJ Petworth Court NN
TITLE
% I )
Project Overview Stream Bank Stabilization
�
! Raleigh, NC 434 Fayetteville St
SHEET Suite 1500
of 5 City of Raleigh Engineering Services Raleigh, NC 27601
y Stormwater Management [phone]
i 127 West Hargett Street, 8th Floor wsp.com

1AR\
TEMPORARY STREAM IMPACT (ACCESS) I,.122*4
AR� `� J
PERMANENT STREAM IMPACT (BANK
© STABIUZATION)
PERMANENT BUFFER IMPACT (ZONE 1) SHEDI
+ + + + + + + TEMPORARY BUFFER IMPACT (ZONE 1) R) 1 ( I I ' 6
TEMPORARY BUFFER IMPACT (ZONE 2) \ ` \ I� ' 1PAR
O EXISTING STREAM BUFFER (ZONE 1) I I' \ +
EXISTING STREAM BUFFER (ZONE 2) I
G4A0
1
•� o 1
®�a1 A �6L F
�\ 6 1
aLlb
`(010
y
8AR
\ I V O
Z
wa
TEE 1 m
EE \ % 10AR
\ 00 REA V
1 mz
\� 12AR
6TREE 1
....... �— \ 14AI I I
.......I,i'24A..o REJ I�
08
+ + 12AR
24AR do
r 14AR ` 8 REE I
\
12T \ I
1 1 0 6 EE I
10 /6
�/ ®1112TTREE
t
\ / / 0\41 tE I I, • � \
i
�BTRE 6TREES2TR
12 EE
�I O o 1010 �\ 166AR 0 12T
S 12-
IMPACT SUMMARY \ ` l 11\ aTR/E� TRE Q
6TREE 6TREE
TEMPORARY PERMANENT
STREAM 107 100���
IMPACTS [LF] 12AR
\ � \ \ � I t, \ \ �
1 STREAM
IMPACTS [SF] 2275 1199
ZONE 1 BUFFER 10
1505 2006
IMPACTS [SF] �81 I\\ \ 18AR
ZONE 2 BUFFER 406 0`+1`\ \ \ \
IMPACTS [SF] J� ` A�
NOTE: THERE ARE NO PERMANENT BUFFER 18TR� \
IMPACTS IN ZONE 2 NEE \ \ � L%
GRAPHIC SCALE 10TR \___ RE -Er
—
40 o zo 40 T� �
12A7
( IN Fm I
1 inch - 40 ft — — — \ R E 0 R
© WSP USA INC. ALLRIGHTS ARE RESERVED. -POSSESSION. REPRODUCTION OR OTHER USE OF THIS DOCUMENT WITHOUT PRIOR PERMISSION FROM WSP. IS E.YPRESSLY PROHMITE�
OJECT#
21
PRAWNBY: DATE', EDBY AJ P e two rt h Court
DRAWN BY: JWB DECKED BY AI
TITLE
Stream & Buffer Stream Bank Stabilization
e Impact Exhibits
! Sheet Layout Raleigh, NC 434 Fayetteville St
[ Suite 1500
SHEET
2 Of 5 City of Raleigh Engineering Services Raleigh, NC 27601
g Stormwater Management [phone]
127 West Hargett Street, Bth Floor Wsp.com

1
I
I /
B1: TEMPORARY BUFFER
IMPACT (ZONE 1)
APPROX. 90 SF
62: PERMANENT BUFFER
\ IMPACT (ZONE 1)
APPROX. 836 SF
S2: PERMANENT STREAM IMPACT-1--1
(BANK STABILIZATION) \
APPROX. 65 LF
APPROX. 568 SF
61: TEMPORARY BUFFER
IMPACT (ZONE 1)
SEE SHEET 4
MATCHLINE: SEE SHEET 4
— — — — — — — TEMPORARY STREAM IMPACT (ACCESS)
S1: TEMPORARY STREAM IMPACT
(CONSTRUCTION ACCESS)
APPROX. 88 LF
APPROX. 1911 SF
-B2: PERMANENT BUFFER \
IMPACT (ZONE 1)
APPROX. 1170 SF
x
x x x x x x x x
x x x\ x x x x
x x x x/x x x
x x
1 I I
53: PERMANENT STREAM IMPACT
(FILL -CONSTRUCTED RIFFLE)
APPROX. 35 LF
APPROX. 630 SF
1: TEMPORARY BUFFER '
IMPACT (ZONE 1)
APPROX. 702 SF
1: TEMPORARY STREAM IMPACT
CONSTRUCTION ACCESS)
SEE SHEET 4 `
PERMANENT STREAM IMPACT (BANK
288888M STABILIZATION)
x x x x x x x x x x x x PERMANENT BUFFER IMPACT (ZONE 1) y
�n
z "o
z
+ + + + TEMPORARY BUFFER IMPACT (ZONE 1) 6d
N
C z
DO
m
TEMPORARY BUFFER IMPACT (ZONE 2)
© WSP USA INC. ALL RIGHTS ARE RESERVED. ANY POSSESSION. REPRODUCTION OR OTHER USE OF THIS DOCUMENT WITHOUT PRIOR PERMISSION FROM WSP, IS EXPRESSLY PROHIBITED.
PROJECT DATE 011 P e two rth Court
DRAWN BY: JWR CHECKED RY: AJ
TITLE
Stream86uffer Impact Stream Bank Stabilizatior
Impact
Exhibit Raleigh, NC
SHEET
3 Of 5 City of Raleigh Engineering Services
Stormwater Management
127 West Hargett Street, 8th Floor
GRAPHIC SCALE
20 0 10 20
( IN FEET )
I inch = 20 It.
434 Fayetteville St
Suite 1500
Raleigh, NC 27601
[phone]
wSp.com

MATCHLINE: SEE SHEET 3
51: TEMPORARY STREAM IMPACT
(CONSTRUCTION ACCESS)
APPROX. 19 LF
APPROX. 363 SF
0
IMPACT (ZONE 2)
APPROX. 406 SF
B1: TEMPORARY BUFFER
IMPACT (ZONE 1)
APPROX. 713 SF
TEMPORARY STREAM IMPACT (ACCESS)
PERMANENT STREAM IMPACT (BANK
STABILIZATION)
X X X X x x x X X X X PERMANENT BUFFER IMPACT (ZONE 1)
X 3
+ + + + TEMPORARY BUFFER IMPACT (ZONE 1) is= GRAPHIC SCALE
us v 20 0 10 20
< Z
m
TEMPORARY BUFFER IMPACT (ZONE 2) IN ice' 1
1 imb - 20 rt
© WSP USA INC ALL RIGHTS ARE RESERVED. ANY POSSESSION, REPRODUCTION OR OTHER USE OF THIS DOCUMENT WITHOUT PRIOR PERMISSION FROM WSP. IS EXPRESSLY PROHIBITED.
OJECT
/2021
DRAM BY
DATE.EDBYAJ Petworth Court
DRAWN BY. JWB CHECKED BV. AI
TITLE
Stream8 Buffer Impact Stream Bank Stabilization
Impact
Exhibit Raleigh, NC
' SHEET
4 of 5
City of Raleigh Engineering Services
Stormwater Management
127 West Hargett Street, 8th Floor
434 Fayetteville St
Suite 1500
Raleigh, NC 27601
[phone]
WSp.cOm

SOIL STABILIZATIONA FTS
�(AS CONSTRUCTED)
III=i IMBRICATED ROCK
III_ �(AS CONSTRUCTED)
BACKFILL IN FRONT OF FOOTER
II 3' MIN N9TH MIX OF 70% CLASS I RIPRAP
AND 30% COARSE NATIVE MATERIAL
l (APPROX. 0.35 CYAF)
NOTE: RIPRAP PROTECTION FOR WALL
FOOTER SHALL EXTEND TO THE
BOTTOM OF THE FOOTER AND 0.5'-1'
-1 0 3' MIN LOWER IF FEASIBLE WITHOUT
-III-III—III—III—III—III—i I— r_� STABILITYLY IMPACTING WALL
COORDINATE WITH THE
—1 1= 1=1 =III III=I DESIGN ENGINEER
SECTION VIEW RIPRAP PROTECTS WALL TOE
(STATION: 0+20 - 0+50) WHERE BOTTOM OF FOOTER
WAS CONSTRUCTED ABOVE
ESTIMATED SCOUR DEPTH
EXISTING GROUND
ZONE 1: LIVE STAKES
WRAP LIFTS IN COIR FIBER MATTING
lII I —III—III- TOPSOIL LAYER
-III=III=11-�
—III BENCH
�PROPOSED TOP OF WALL
- - NATIVE BED
III= 2_2.5' / MATERIAL
TOP ROCK
IIIIIII T
COMPACTED BACKFILL '— I '
BACKFILL INSTALLATION
MATH C30% NATIVE BEDIRIPRAP
MATERIAL
WRAP GEOTEXTILE — —I (MIN. "DTH - 2')
AROUND BURIEDPORTION—
BOULDERSGABION BASKET FOOTER
(5-6' DEEP)
SECTION VIEW
EXISTING GROUND WITH SOIL LIFTS
(STATION: 0+50 - O+SO)
SOIL STABILIZATION MATTING
_ PROPOSED TOP OF WALL
1 =1 I TOP ROCK
OVERLAP COIN FIBER
MATTING AND
GEOTEXTILE I iii
I 1' 2-2.5' CONSTRUCTED RIFFLE
COMPACTED
WRAP GEOTEXTILE---"
AROUND BURIED
PORTION OF SECTION VIEW
BOULDERS (STATION: 0+80 - 1+00)
3' FOOTER NOTE: ROCK FOOTERS (DEPTH 2,5-3') SHALL ONLY BE USED ADJACENT TO
THE CONSTRUCTED RIFFLE. OTHERWISE GABION FOOTERS (DEPTH 5-6')
ROCK
SHALL BE USED. ALL EXISTING ROCK SHALL BE SALVAGED FROM THE
EXISTING CONSTRUCTION. ANY NEW MATERIAL FOR FOOTERS SHALL BE
GABIONS AND RIPRAP FOR BACKFILL.
© WSP USA INC. ALL RIGHTS ARE RESERVED ANY POSSESSION. REPRODUCTION OR OTHER USE OF THIS DOCUMENT WITHOUT PRIOR PERMISSION FROM WSP. IS EXPRESSLY PROHIBITED
PROJECTI DATE 0112512WI
!� DRAWN BY JWB CHECKED BY AJ P etwo rt h Court
TITLE N N % I )
f Proposed Typical Stream Bank Stabilization
! Section Raleigh, NC 434 Fayetteville St
t SHEET Suite 1500
5 Of 5 City of Raleigh Engineering Services Raleigh, NC 27601
i Stormwater Management [phone]
127 West Hargett Street, 8th Floor WSp,COn1

ml
PEN IX
OVERVIEW
MAPS

G
�S70NEHEN y�R l m�;
/ A
GRAPHIC SCALE
600 0 300 600
�INFWT� �I
1 inch - 600 R
DELINEATED PROJECT AREA IS REPRESENTA TIVE OF APPRO- DE LIMITS OF DISTURBANCE THE LINES ARE NOT TO SCALE AND NOT FOR THE PURPOSES OF CONSTRUCTION OR VF RMITTING
SOURCE: USG S 2016 QUAD MAP- BAVLEAF, NORTH CAROLINA
9 ©WSP USA INC. ALL RIGHTS ARE RESERVED ANY POSSESSION. REPRODUCTION OR O�HER'JSE OF THIS DOCLMENT WITHOUT PRIOR PERMISSION FROM WSP. IS EXPRESS[ X PROHIB: TED
DATE
21
[Yp7 PROJECT IT
CHECK D BY
P e two rt h Court
D DRAWN BY JWB CHECKED BV. AJ
TITLE
USGS Stream Bank Stabilization
e LOCATION MAP
BY Raleigh, NC
L SHEET
a City of Raleigh Engineering Services
"g of 3
6 Stormwater Management
S 127 West Hargett Street, 81h Floor
NNS I )
434 Fayetteville St
Suite 1500
Raleigh, NC 27601
[phone]
WSP.Com

DELINEATEOPROJECTAREA/SREPRESENTAVWOFAPPROXIMATELIMITSOFDISNRBANCE THE LINES ARE NOT TO SCALE AND NOT FOR THE PURPOSES OF CONSTRUCTION OR PERMITTING.
SOURCE: USDA 1970 SOIL SURVEY: WAKE COUNTY NORTH CAROLINA - MAP NUMBER19
WSP USA INC. ALL RIGHTS ARE RESERVED. ANY POSSESSION, REPRODUCTION OR O-HER USE OF THIS DOCUMENT WITHOUT PRIOR PERMISSION FROM WSP. IS EXPRESSLY PROHIB TED
PROJECTM'. DATE.O12SYO DP e tw o rt h Court
DRAWN AWN1V. JWH CHECKED BYAl AJ
TITLE
SOIL
SURVEY SUURRVEY MAP Stream Bank Stabilization
6
Raleigh, NC 434 Fayetteville St
[ sHEF, Suite 1500
N City of Raleigh Engineering Services Raleigh, NC 27601
2 of 3 Stormwater Management [phone]
127 West Hargett Street, 8th Floor WSP.Com

' Cambridge!1
IT77N
�ICIL
Alk
` '�'
� :1A F%� � . �.� a- ��� . �.Winds Dr
1
SQ
ate
G�At
f 5�e�
Maury Ct '
44
PROJECT
Petite
� SITE
ct
+ Bay .
Middlefield Ct V'AT
.`L 1. jA
A Bt
as lu
G<eek�
GRAPHIC SCALE
300 0 150 300 '�`
j(rE
G0 Al
DELINEATED PROJECT AREA IS REPRESENTATI.E DF APPROXIMATE LIMITS OFOIST ROANCE THE LINES ARE NDT TO SCALE AND 1- EOh P IE PURPOSES OFCONSTRUCTION OR PERMITTING.
SOURCE NC FRIS,-COUNTY, NORTH CAROLINA-PANELS-DFIRM_NC_3T10019]00J 6 DFIRM_NC 37i001-M
© W SP USA INC. ALL RIGHTS ARE RESERVED. ANY POSSESSION, REPRODUCTION OR OTHER USE OF THIS DOCUMENT WITHOUT PRIOR PERMISSION FROM WSP. IS EXPRESSLY PROHIBITED
[¢ FAA_".F DATE..EDBYB2, Petworth Court
D UHAWN WB BY. ! CHECKED BY. AJ
TITLE
It FEMA Stream Bank Stabilization
LOCATION MAP
s Raleigh, NC 434 Fayetteville St
[ SMEET Suite 1500
a City of Raleigh Engineering Services Raleigh, NC 27601
R
3Stormwater 836-4040
9 127 West Hargett Street, 8lh Floor wsp.com

rn
N/F
N/F
ROGER L. KOSAK &
WF WA-
\ 12AR
WE WA-2
0 8TREE
� to I
a
� I
TED L. WERNIKOFF &
SHERRI S. WERNIKOFF
PATRICIA R. KOSAK
WF WA-3
(J4 < I
D.B. 6098, PG. 504
D.B. 3739, PG. 744
WF WA- IS�IE TO 1VA1
WF WA-4
� m v
-
B.M. 1984, PG. 556
B.M. 1985, PG. 221
w
a
N
m v I
PIN 0797796501
PIN 0797792396
0
vF WA_1.
oTREE fAR
GAT -AI
1204 MANTEO CT.
2004 PE�RTH CT.
869
12AR -
( 12�AR
WF 6 P
Do
Wr. W 113 �
p .W
O
Ln N rn �
m
0 gam
140
I
SCREE O O m-4
W
14AR 0 "r 12AR� F WA-5 - .p T ,� 5
,o
m I s6
WF WA-5Q I
I
�VF SA- 0
16RT `;o W� WA-11 8AR -
r "
12PT 6TREE SHED I �Y 0 4i\ .`',WF WL 7 I
6TR�Ei� - Q BTRL� 6TREE 6TP,EE 10AR I
i
6TREE w12,AR , - WF WA-10 �, 8TREE I
�� WF WA-9 �0 12AR I
g6TREE
_ N/F
= / I MICHAEL P. MARTIN &
") �\ d, 26AR ( 30AR % - WF SA-9 I MYRA C. MARTIN
1 A
\-- 14AR D.B. 5044, PG. 821
) 18A 3MG �0 24A E 6TREE
_ I B.M. 1984, PG. 556
6LI 8 -
0 WAR I PIN 0797796364
sL! Al
�( WP SA-7 x I 1209 MANTEO CT.
r
a a
�'i00D 0 8TREE I 139
>�BRIDvE 12AR
< A 2� A , 0 24AR RIM=366.44'
I
ICV IN(N)=359.14'
4 ��0 � ; �' 4r1R 0 8TREE IN(E)=358.64'
�010 > n IN(W)=359.14'
�' 12TREE I OUT=358.34'
6TREE
8'I i ' q; P lC _ x �. I 4�G
11 „TS 1 I xV AR 1�4F SA -
WV
R I -,
WV a �m1V=365 M°
CATV d'.' /R/ 6T"\ 14AR`8AP FFTPE.R C 6TR' 8„pVC O`ZO0
jr To ss 5 6
ss
1,110 gY�i 10TREE \ \ s
tK�\ TOC-381 47' 15RCP 51� 3 s a,P/ v� /r 14!0W�a,.EE ` WF SA 5REE r \ s
G OUT=375.97'. / / /� W
/� �
� WV // \ 1 8TRE2 6TREE (12TRE.= J"
RIM=384.37' WV /Ss // RIM=368.61' L;A `, 012TPEE � \ N/F
IN=375.27' / IN=361.51' 16AR
arR E WILLIAM G. TARRANT, JR. &
OUT=275.07' M OUT=360.01' 16AR 12T , I \ CHRISTINE A TARRANT
U
EXISTING 30' DRAINAGE & 6i� \ I� (6rR
>-°TacE
87REE
\�
D.B. 13690, PG. 468
TRAV-10-PK
SANITARY SEWER EASEMENT - -' as
- �.,-
,. WF $A .131 R`
12TREE
B.M. 1984, PG. 556
N:779206:59'
Y E.
(B.M. 1985, PG. 221) { BeAR
6TREE
-'
6TREE
12AR
PIN 0797797108
E-2097328.71'
__
0
8TREE 3`33
6
fs
1212 MAURY CT.
EL:381.53'
WFSA3
._
3'
131
.0 6TREE
(� p,O y v L 12AR
v N/F S IJNiTs 1 7 �LL
9�PF9�cS
-� O'o TYt) `.OAR A�(P��fi A
��� STEVEN E. COUCH & 7g, �� r $lo A WF >A-2 CL 10
��/ ELIZABETH A. COUCH S� r \ ! t� 9
I 81 _ - 18AR
D.B. 3600, PG. 907 �� arREI� s 66AR66AR
V Q B.M. 1985, PG. 221 v�sl ! 0 ! ._
IV
PIN 0797794137 �0 18TREE ' 1�a J ��-
h' 6�REE 6 REE S87° 25' 58"W 300.32'
J O 2001 PETWORTH CT. �rREE �,, f—
_
Q �O 871 W�SA -13 TlE TO PL
/ O EXISTING ON SAN10TREE ITARY 1 �T 6' N/F
/ TRAV-2-NL
N:779047.71'
�V`4" E:2097248.75'
AEL:396.07'
cb
RIM=397.04'
INV=389.24'
2TREE ti,RE 14"
-- SEWER EASEMENT �—+ 12AR PAUL LOUIS FITCH &
— �
(B.M. 1985, PG. 221) —�
N88 �6',47" 10 .07' LINDA OTTEN FITCH
6TREE E� OAR D.B. 17180, PG. 2594
_ _ _ _ _ / B.M. 1984, PG. 933
R g -7 — - PIN 0797797023
N/F
z'� ��� �� 1213 MAURY CT.
R. LAWRENCE SMITH &
ELLYN H. SMITH
D B 3800 PG 347
B.M. 1985, PG. 221
THE EXISTING CONDITIONS INFORMATION SHOWN
PIN 0797794020
IN THIS DOCUMENT WAS ORIGINALLY ISSUED AND
SEALED BY DUSTIN J. MCCARTY, NC PLS L-5213, ON
7912 FARNHAM CT.
10/02/2018. SEE THE ORIGINAL PROJECT REPORT
872
FOR CERTIFICATE AND SEAL OF SURVEYED
EXISTING INFORMATION.
CONDITIONS
434 Fayetteville St
Suite 1500
Raleigh, INC 27601
(919) 8364040
wsp.com
PRELIMINARY: NOT
RELEASED FOR
CONSTRUCTION
I icon— i1 F-f)1RFi
�_•^)
V
=)
w0
n
0
(Lma
Z
1
1.9
<T
d
Lim
¢
m
a�a
E I
�00�
�C/
LLN�
w
0
U
^W^
CL
REVISIONS
MOJECTr ppTE'1Uffi.A18
OM^By CHECMEOBy:
TITLE
EXISTING
CONDITIONS
SURVEY
SHEET
1 DF ,

OWN..ia"F�?
SITE PHOTOS
TAKEN BY WSP

t-
on

IV

Initial Construction: After Initial Storm Damage (06/2020) 1 3 Photos
L
4

Initial Construction: After Secondary Storm Damage 09/2020 3 Photos

i
AIV
a-:
• s � i� Tom" .�'.S')i � '.';.

J Is
- ♦+ ' 7L , w
jr
�

asF'ii
l � Y_

I]
PRE -FILING
MEETING
REQUEST

Contact Name *
Contact Email Address
Project Owner
Project Name *
Project County*
Owner Address:*
Is this a transportation project?*
Jon Becker
[e-mail]
City of Raleigh
Petworth Court Stream Bank Stabilization
Wake
Street Address
127 West Hargett Street
Address Line 2
8th Floor
CRY
Raleigh
Fbstal / Zip Code
27601
r Yes <' No
Type(s) of approval sought from the DWR:
W 401 Water Quality Certification - r 401 Water Quality Certification -
Regular Express
f Individual Permit F- Modification
r Shoreline Stabilization
State / Rovince / Pegion
NC
Country
us
Does this project have an existing project ID#?
(-- Yes r- No
Please list all existing project ID's associated with this projects.
18-1725
Do you know the name of the staff member you would like to request a meeting with?
Stephanie Goss
Please give a brief project description below.*

The Petworth Court Stream Bank Stabilization project was authorized
under the United States Army Corps of Engineers (USACE) Section
404 Nationwide Permit (NWP) 13 and associated North Carolina
Division of Water Resources (NCDWR) Section 401 Water Quality
Certification (WQC) in January 2019. The project included the
installation of an imbricated rock wall along the western bank of an
upper tributary of Mine Creek and regrading the eastern bank at a
lower elevation and flatter slope. The stream bed was modified only
as needed for construction access. After project construction was
completed in March 2020, several severe rainfall events in the spring
and summer resulted in additional bank erosion and channel
migration adjacent to the project area. Without time for vegetation to
establish a root system after construction, the channel has migrated
much more quickly than anticipated. The rainfall and resultant stream
flows resulted in bank erosion and general channel instability. To
address these issues and prevent further damage, improvements
were made that included approximately 30 feet each of rebuilt footer
for imbricated rock, additional/extended imbricated rock, and
constructed riffle. These changes exceeded the limits of disturbance
(LOD) from the original project and includes additional buffer and
stream impacts. The City of Raleigh is requesting a USACE Section
404 NWP 13 and NCDWR Section 401 WQC for the additional
impacts that resulted from the project improvements.
Please give a couple of dates you are available for a meeting.
Please attach the documentation you would like to have the meeting about.
pdf only
By digitally signing below, I certify that I have read and understood that per the Federal Clean Water Act Section
401 Certification Rule the following statements:
This form completes the requirement of the Pre -Filing Meeting Request in the Clean Water Act Section 401 Certification
Rule.
I understand by signing this form that I cannot submit my application until 30 calendar days after this pre -filing
meeting request.
I also understand that DWR is not required to respond or grant the meeting request.
Your project's thirty -day clock started upon receipt of this application. You will receive notification regarding meeting location
and time if a meeting is necessary. You will receive notification when the thirty -day clock has expired, and you can submit an
application.
Signature *
0,7lf e�YJe me-t
Submittal Date 12/11/2020

Becker, Jonathan W.
From: [e-mail]
Sent: Monday, January 11, 2021 12:01 AM
To: Becker, Jonathan W.
Cc: [e-mail]
Subject: Pre -Filing Time Clock has been reached for Petworth Court Stream Bank Stabilization
- 20181725 Ver 2
Attachments: DWR Pre -Filing Meeting Request Form.pdf
The North Carolina Division of Water Resources has received the Pre -Filing Meeting Request Form for Petworth Court
Stream Bank Stabilization that you submitted on 12/11/2020. The ID number for that project is 20181725, Version 2.
Your Pre -Filing Meeting Request has now reached the 30 calendar days' requirement and your application can now be
accepted.
When you submit your application please upload a copy of the attached document in this email.
This email was automatically generated by Laserfiche workflow. Please do not respond to this email address, as
responses are not monitored.

IE
ORIGINAL

U.S. ARMY CORPS OF ENGINEERS
WILMINGTON DISTRICT
Action Id. 2018-02284 County: Wake U.S.G.S. Quad: NC-Bayleaf
GENERAL PERMIT (REGIONAL AND NATIONWIDE) VERIFICATION
Permittee: City of Raleigh, Stormwater Management
Wayne Miles
Address: 127 West Hargett Street, 8th Floor USACE Approval for Initial Construction
Raleigh, NC 27601
Telephone Number: 919-996-3964
E-mail: Wayne.Miles(alraleighne.gov
Size (acres) 0.19 Nearest Town Raleigh
Nearest Waterway Mine Creek River Basin Neuse
USGS HUC 03020201 Coordinates Latitude: 35.891
Longitude:-78.671
Location description: The project is located near Petworth Ct. in the Stonehenge subdivision, Raleigh, Wake County, North
Carolina.
Description of projects area and activity: This verification authorizes the impacts to an unnamed tributary to Mine Creek for a
bank stabilization project. Stabilization activities will occur in two locations along the tributary. 1941f of stream channel will
be impacted by re -grading stream banks and installing imbricated rock bank protection, toe protection, and soil lifts.
Applicable Law(s): ® Section 404 (Clean Water Act, 33 USC 1344)
❑ Section 10 (Rivers and Harbors Act, 33 USC 403)
Authorization: NWP 13. Bank Stabilization
SEE ATTACHED NWP GENERAL, REGIONAL, AND/OR SPECIAL CONDITIONS
Your work is authorized by the above referenced permit provided it is accomplished in strict accordance with the enclosed
Conditions, your application signed and dated 12/7/2018, and the plans sheets 1-8 dated 12/6/2018. Any violation of the attached
conditions or deviation from your submitted plans may subject the permittee to a stop work order, a restoration order, a Class
I administrative penalty, and/or appropriate legal action.
This verification will remain valid until the expiration date identified below unless the nationwide authorization is modified, suspended
or revoked. If, prior to the expiration date identified below, the nationwide permit authorization is reissued and/or modified, this
verification will remain valid until the expiration date identified below, provided it complies with all requirements of the modified
nationwide permit. If the nationwide permit authorization expires or is suspended, revoked, or is modified, such that the activity would
no longer comply with the terms and conditions of the nationwide permit, activities which have commenced (i.e., are under construction)
or are under contract to commence in reliance upon the nationwide permit, will remain authorized provided the activity is completed
within twelve months of the date of the nationwide permit's expiration, modification or revocation, unless discretionary authority has
been exercised on a case -by -case basis to modify, suspend or revoke the authorization.
Activities subject to Section 404 (as indicated above) may also require an individual Section 401 Water Quality Certification. You
should contact the NC Division of Water Resources (telephone [phone]) to determine Section 401 requirements.
For activities occurring within the twenty coastal counties subject to regulation under the Coastal Area Management Act (CAMA), prior
to beginning work you must contact the N.C. Division of Coastal Management Morehead City, NC, at [phone].
This Department of the Army verification does not relieve the permittee of the responsibility to obtain any other required Federal, State
or local approvals/permits.
If there are any questions regarding t is verification, any of the conditions of the Permit, or the Corps of Engineers regulatory program,
please contact Tasha Alexander at ,19-554 4884 ext. 35,or Tasha.L.Alexanderna,usaee.army.mil.
Corps Regulatory Official: Date: 1/25/2019
Expiration Date of Verificatigri: W 9/202

Action ID Number: 2018-02284 County: Wake
Permittee: City of Raleigh, Stormwater Management, Wayne Miles
Project Name: Petworth Court Stream Bank Stabilization
Date Verification Issued: 1/25/2019
Project Manager: Tasha Alexander
Upon completion of the activity authorized by this permit and any mitigation required by the permit,
sign this certification and return it to the following address:
US ARMY CORPS OF ENGINEERS
WILMINGTON DISTRICT
Attn: Tasha Alexander
Raleigh Regulatory Office
U.S Army Corps of Engineers
3331 Heritage Trade Drive, Suite 105
Wake Forest, North Carolina 27587
or
[e-mail]
Please note that your permitted activity is subject to a compliance inspection by a U. S. Army Corps of
Engineers representative. Failure to comply with any terms or conditions of this authorization may
result in the Corps suspending, modifying or revoking the authorization and/or issuing a Class I
administrative penalty, or initiating other appropriate legal action.
I hereby certify that the work authorized by the above referenced permit has been completed in
accordance with the terms and condition of the said permit, and required mitigation was completed in
accordance with the permit conditions.
Signature of Permittee
Date

ROY COOPER
Governor
a
MICHAEL S. REGAN
Secretary
LINDA CULPEPPER
NORTH CAROLINA
Director
Environmental Quality
January 29, 2019
City of Raleigh -Engineering Services.
Stormwater Management
Attn: Wayne Miles
127 West Hargett,Street, 8th Floor
Raleigh, NC 27601
DWR #18-1725
Wake County
NCDEQ Approval for Initial Construction
Subject: APPROVAL OF 401 WATER QUALITY CERTIFICATION WITH ADDITIONAL CONDITIONS
AUTHORIZATION CERTIFICATE PER THE NEUSE RIVER BASIN RIPARIAN BUFFER
PROTECTION RULES (15A NCAC 02B .0233) WITH ADDITIONAL CONDITIONS
Petworth Court Streambank Stabilization
Dear Mr. Miles:
You have our approval for the impacts listed below for the purpose described in your
application received by the. Division of Water Resources (Division) on December 18, 2018 with
payment received on December 20, 2018. These impacts are covered by the attached Water
Quality General Certification Number 4134 and the conditions listed below. This certification is
associated with the use of Nationwide Permit Number 13 once it is issued to you by the U.S.
Army Corps of Engineers. Please note that you should get any other federal, state or local
permits before proceeding with your project, including those required by (but not limited to)
Sediment and Erosion Control, Non -Discharge, and Water Supply Watershed regulations.
This approval requires you to follow the conditions listed in the enclosed certification and the
following additional conditions:
1. The following impacts are hereby approved provided that all of the other specific and
general conditions of the Certification and Buffer Rules are met. No other impacts are
approved, including incidental impacts. [15A NCAC 02B .0506(b)(c)] and15A NCAC
02B .0233(8)]
North Carelind DeVartirrnt of f_nvironinrntal Quality ,Division of Water Resources
Ralcigli ltruioual Office 3800 Barrett Drive Raleigh, North Carolina 27609
oarss•.,��:I�role+ac\ �s / 919.791.4200

Type of Impact
Stream
S1: Construction Access
S2: Bank Stabilization
S3: Construction Access
S4: Construction Access
Buffers - Zone 1
B1: Construction/Access
B2: Bank Grading/Stabilization
B3: Construction/Access
134: Bank Grading/Stabilization
135: Construction/Access
136: Bank Grading/Stabilization
Buffers - Zone 2
B5: Construction/Access
Petworth Court Streambank Stabilization
DWR t#1S-1725
BLFFER & 401 APPROVAL
Page 2 of 4
Amount Approved
(units)
Permanent
--0-(linear feet)
86 (linear feet)
0 (linear feet)
0 (linear feet)
Amount Approved
(units)
Temporary
27 (linear feet)
0 (linear feet)
21 (linear feet)
60 (linear feet)
0 (square feet)
185 (square feet)
188 (square feet)
0 (square feet)
0 (square feet)
450 (square feet)
728 (square feet)
0 (square feet)
0 (square feet)
1,488 (square feet)
500 (square feet)
0 (square feet)
0 (square feet)
540 (square feet)
2. The permittee shall report to the Raleigh Regional Office any noncompliance with this
certification, any violation of stream or wetland standards [15A NCAC 02B .0200] including
but not limited to sediment impacts, and any violation of state regulated riparian buffer
rules [15A NCAC 02B .0200]. Information shall be provided orally within 24 hours (or the
next business day if a weekend or holiday) from the time the applicant became aware of the
circumstances. A written submission shall also be provided within 5 business days of the
time the applicant becomes aware of the circumstances. The written submission shall
contain a description of the noncompliance, and its causes; the period of noncompliance,
including exact dates and times, if the noncompliance has not been corrected, the
anticipated time compliance is expected to continue; and steps taken or planned to reduce,
eliminate, and prevent reoccurrence of the noncompliance. The Division may waive the
written submission requirement on a case -by -case basis.
3. No Waste Spoil Solids or Fill of Any Kind
No waste, spoil, solids, or fill of any kind shall occur in wetlands, waters, or riparian areas
beyond the footprint of the impacts depicted in the Pre -Construction Notification. All
construction activities, including the design, installation, operation, and maintenance of
sediment and erosion control Best Management Practices, shall be performed so that no
violations of state water quality standards, statutes, or rules occur. [15A NCAC 02H .0501
and .0502]

Petworth Court Streambank Stabilization
DWR #18-1725
BUFFER &401 APPROVAL
Page 3 of 4
4. Protective Fencing '
The outside buffer, wetland or water boundary and along the construction corridor within
these boundaries approved. under this authorization shall be clearly marked with orange
warning fencing (or similar high visibility material) for'the areas that have been approved to
infringe within the buffer, wetland or water prior to any land disturbing activities to ensure
compliance with 15 NCAC 02H .0500. ' [15A NCAC 02H .0506 (6)(2) and (c-)(2.) and 15A NCAC
02H .0507 (c)]
5. This approval is for the purpose and design described in your application. The plans and,
specifications for this project'are incorporated'by reference as part of!the Certification and
Buffer -Authorization. If you change your project, you must notify the- Division and you. may
be required to submit a new application package with the appropriate fee. If the propefty is
sold; the new owner must be given a copy of this approval letter and General'Certification
and is responsible for complying,with all conditions. [15A NCAC 026 .0507(d)(2)]
This approval and its;conditions are final and binding unless contested. [G.S. 143-215.5]
This Certification and.Buffer Authorization can be contested as provided in General Statute
150B by filing a written petition for an administrative hearing to the Office of
Administrative Hearings (hereby known as OAH) within sixty (60) calendar days.
A petition form may be obtained from the OAH at http'://www.ncbah.c6m/ or by calling the
OAH Clerk's Office at [phone] for information. A.petition is considered filed when
the original and one (1) copy along with any applicable OAH filing fee is received in the OAH
during normal office hours (Monday through Friday between 8:00am and 5:00pm, excluding -
official state holidays). -
The petition may be faxed to the OAH at [phone], provided the original and one ..
copy of the petition along with any applicable OAH filing fee is received by the OAH within
five (5) business days following the faxed transmission.
Mailing address for the OAH:
If sending by First Class Mail If sending via delivery service
via the US Postal Service: (e.g. UPS, FedEx):
Office of Administrative Hearings Office of Administrative Hearings
6714 Mail Service Center 1711 New Hope,Church Road
Raleigh, NC,27699-6714 Raleigh, NC 27609-6285

Petworth Court S'reambank Stabilization
DWR 418-1725
BUFFER & 401 APPROVAL
Page 4 of 4
One (1) copy of the petition must also be served to Department of Environmental Quality:
William F. Lane, General Counsel
Department of Environmental Quality
1601 Mail Service Center
Raleigh, NC 27699-1601
Please send one (1) copy of the petition to DWR:
If sending by First Class Mail
via the US Postal Service:
Karen Higgins
NC DWR — 401 & Buffer Permitting
Branch
1617 Mail Service Center
Raleigh, NC 27699-1617
If sending via delivery service
(e.g. UPS, FedEx):
Karen Higgins
NC DWR — 401 & Buffer Permitting
Branch
512 N. Salisbury Street
Raleigh, NC 27604
This letter completes the review of the Division under section 401 of the Clean Water Act and
the Neuse Riparian Buffer Rules as described in 15A NCAC 02B .0233. Please contact Stephanie
Goss at 919-791-4256 or stephanie.gossPncdenr.gov if you have any questions or concerns.
Sincerely,
Rick Bolich, LG
Assistant Supervisor, Water Quality Regional Operations Section
Enclosure: GC 4134
cc: U.S. Army Corps of Engineers; Raleigh Regulatory Field Office; 3331 Heritage Trade
Drive, Ste. 105; Wake Forest, NC 27597
DWR RRO 401 file
DWR 401 & Buffer Permitting Unit via Laserfiche
Jon Becker via e-mail at jon.becker wsp.com

TEMPORARY STREAM IMPACT (ACCESS) 12AR\1Impact Summary for Initial Construction
PERMANENT STREAM IMPACT (BANK ` ©SAR I I
STABILIZATION)
1� b 8AR "
Vf
PERMANENT BUFFER IMPACT (ZONE 1) ��
w�
TEMPORARY BUFFER IMPACT (ZONE 1) TR I r 6TREE OAR o
® TEMPORARY BUFFER IMPACT (ZONE 2) 1 \ I �I 1PAR \ \ ©12© REA MZ
<�
I, I
EXISTING STREAM BUFFER (ZONE 1) \ I _ _ _ _ -_ _ 6TREE 1
EXISTING STREAM BUFFER (ZONE 2) O"A
tN�01G \T _ 4A \ ` 14 A
® I
1 A 6L +RRR��X+\/ Q R�
8 I
BLI>o + 12AR I
24AR
14AR ` 8TREE I
\ \ I
- - 1 12T
\ +�_ \ ' 0 6 EE I
8�1 �A +
AR A 6TR S S 12E
®10TREEE
"E 6TREE �2TR
Q 12 EE
16AR
S 01 Oo A 16AR 14TREE
_ 12T
o p� � 6T
(6I&E 012
,` 8TREE/6TREE 6TREE
IMPACT SUMMARY � IAA -
0
TEMPORARY PERMANENT \ 0STREAM `
\
IMPACTS [LF] 108 as \ \� v 12Ar
STREAM
1527 1550
IMPACTS [SF] \ 1 \ \
ZONE 1 O
BUFFER 2123 1416
IMPACTSS\
[ F) I I 81 I\\ \ 1 BAR
ZONE 2 BUFFER 540 0
IMPACTS [SFj 18TRL= co A
NOTE: THERE ARE NO PERMANENT BUFFER t,,3 ``
IMPACTS IN ZONE 2 12�REE \ LTR \ '
\ \
GRAPHIC SCALE 10TR— \�\ E— 14AR
�o o zo �0 1 \ J--
\ 2A7 \
(DI FM)
1 inch - 40 tL 6 R E 0 R
© WSP USA INC. ALL RIGHTS ARE RESERVED ANY POSSESSION. REPRODUCTION OR OTHER USE OF THIS DOCUMENT WITHOUT PRIOR PERMISSION FROM WSP. IS E-RESSLY PROHIBITED.
PROJECT M. DATE: LHE BYJBY 018
AW
DP etwo rt h CourtDRAMDRAM: WB p�DBY'. AW "
TITLE
Stream 8Buffer Stream Bank Stabilization
Impact Exhibits
! Sheet Layout R8121gh, NC 434 Fayetteville St
Ir Suite 1500
e SHEET
2 Of 5 City of Raleigh Engineering Services
Raleigh, NC 27601
� StormwaterManagement [phone]
127 West Hargett Street, 8th Floor WSp.COm

APPENDIX
F REPAIR DESIGN
PLANS
(SEE ATTACHED)

Do S,gn Envelope ID: 91 B6B6 ABDO-4D64 A4 86 3166)1A 9
DRAWING INDEX:
I) COVER SHEET
2) GENERAL NOTES
3) EXISTING CONDITIONS PLAN
4) STREAM STABILIZATION PLAN AND PROFILE
5) EROSION CONTROL PLAN
6) PLANTING PLAN
7) STREAM DESIGN DETAILS
8) EROSION CONTROL DETAILS
Plans Prepared By: Jon Becker, PE
CAD File Path:
J:\185757F Petworth Court\CAD\Plans\Repair Plan\Plan Sheets_Repair.dwg
APPROVED
Stormwater Manager DATE
RECOMMENDED
FOR CONSTRUCTION
DEPARTMENT I DATE I SIGNATURE
THE CITY OF RALEIGH
ENGINEERING SERVICES DEPARTMENT
RUFFIN L. HALL
CITY MANAGER
SEAL =
048066
434 Fayetteville Streeter
Suite 1500, Raleigh, NC 27601
•^'
F- 0165
11/9/2020
Jon Becker PE
[phone]
jon.becker(q-.wsp.com
/Of
R44F
c� cy
CARS/
IFC Repair Plans
Petworth Court
Stream Bank Stabilization
Neuse River Basin
Date: November 9th, 2020
MARY-ANN BALDWIN
MAYOR
Public Improvement Quantities
LLots
N/A
Phase
1
Public Water
N/A
Public Sewer
N/A
Public Street
N/A
Public Stormwater
N/A
0
c�
.PEA
THIS PLAN SET IS INTENDED FOR REPAIR ONLY. PAY ITEMS
AND SPECIFICATIONS HAVE NOT BEEN DEVELOPED FOR AN
INDIVIDUAL BID PROCESS.
SHEET
OF
ALL CONSTRUCTION TO BE IN ACCORDANCE WITH ALL CITY OF
RALEIGH AND/OR NCDOT STANDARDS AND SPECIFICATIONS.
I
8
ALL CONSTRUCTION MUST BE IN ACCORDANCE WITH ALL
LOCAL, STATE, AND FEDERAL RULES AND REGULATIONS.

Do EuB Envelope ID91B6B6AD D0-4D64.M 28Y6671 B9
CONSTRUCTION NOTES
GENERAL NOTES:
EROSION CONTROL NOTES (FOR REFERENCE ONLY)
1. ALL CONSTRUCTION SHALL BE IN ACCORDANCE WITH CITY OF RALEIGH STORMWATER DESIGN MANUAL, PUBLIC
1. ALL EROSION CONTROL MEASURES SHALL BE CONSTRUCTED IN ACCORDANCE WITH THE CITY OF RALEIGH STANDARD
UTILITY HANDBOOK, AND CITY OF RALEIGH STANDARD DETAILS UNLESS OTHERWISE NOTED.
DETAILS AND NCDOT GUIDELINES.
2, CONTRACTOR SHALL COMPLY TO THE FULLEST EXTENT WITH THE LATEST OSHA STANDARDS FOR EXCAVATION
2. ALL CONSTRUCTION ACTIVITIES MUST TAKE PLACE WITHIN THE LIMITS OF THE DISTURBANCE, INGRESS/EGRESS
AND TRENCHING PROCEDURES. CONTRACTOR SHALL USE SUPPORT SYSTEMS, SLOPING, BENCHING ETC. AS
EASEMENTS, OR TEMPORARY CONSTRUCTION EASEMENTS ONLY. ACTIVITIES OUTSIDE OF THESE SPECIFIC AREAS ARE
NECESSARY FOR THESE OPERATIONS AND SHALL COMPLY WITH ALL OSHA PERFORMANCE CRITERIA.
STRICTLY PROHIBITED.
3. CONTRACTOR IS RESPONSIBLE FOR CONTACTING NORTH CAROLINA "ONE CALL" CENTER AT 1-800-632-4949 FROM
3. CONTRACTOR IS RESPONSIBLE FOR MAINTAINING THE CONSTRUCTION SITE IN A SAFE AND ORDERLY CONDITION
ANYWHERE IN THE CONTINENTAL UNITED STATES, OR 811 FROM WITHIN THE STATE OF NORTH CAROLINA.
AND ADHERING TO THE EROSION CONTROL PLAN AS SET FORTH HEREIN. DEVIATION FROM THE EROSION CONTROL
CONTRACTOR SHALL WAIT 48 HOURS WHILE UTILITIES AND UNDERGROUND FACILITIES ARE LOCATED AND
PLAN IS NOT ALLOWED WITHOUT PRIOR WRITTEN APPROVAL FROM THE DESIGNER.
MARKED. NOTIFICATION SHOULD BE NO LESS THAN 2, BUT NO MORE THAN 10, WORKING DAYS BEFORE
COMMENCING EXCAVATION. THE MARKINGS ARE VALID FOR 15 WORKING DAYS FROM THE DATE OF THE CALL TO
4. CONTRACTOR IS RESPONSIBLE FOR REGULAR INSPECTION AND MAINTENANCE OF ALL EROSION CONTROL
THE NOTIFICATION CENTER.
MEASURES. ALL MEASURES SHALL BE INSPECTED IMMEDIATELY FOLLOWING ANY MEASURABLE STORM EVENT. ANY
REQUIRED MAINTENANCE OR REPAIRS SHALL OCCUR AS SOON AS FEASIBLE.
4. CONTRACTOR SHALL PERFORM ALL NECESSARY SUBSURFACE UTILITY INVESTIGATIONS PRIOR TO COMMENCING
CONSTRUCTION. THE CONTRACTOR SHALL BE RESPONSIBLE FOR FIELD VERIFICATION OF EXISTING CONDITIONS,
S. CONTRACTOR IS RESPONSIBLE FOR MONITORING WEATHER CONDITIONS, AND FOR TAKING ACTION AS NECESSARY
OBSTRUCTION, AND UTILITIES WHICH MAY AFFECT PROPOSED WORK.
TO STABILIZE THE CONSTRUCTION SITE PRIOR TO FORECASTED/FORSEEABLE STORM EVENTS.
5, CONTRACTOR SHALL BE RESPONSIBLE FOR MAINTAINING CONTINUITY OF ALL UTILITIES DURING CONSTRUCTION.
6. CONTRACTOR TO MINIMIZE TRACKING EQUIPMENT AND ASSOCIATED SEDIMENT/DEBRIS FROM THE CONSTRUCTION
SITE ONTO THE PUBLIC RIGHT OF WAY.
6. CONTRACTOR 15 RESPONSIBLE FOR PROVIDING SAFE INGRESS AND EGRESS FROM THE PROJECT SITE FOR ALL
VEHICLES, INCLUDING BUT NOT LIMITED TO, TRAFFIC ON ADJACENT PUBLIC ROADS AFFECTED BY CONSTRUCTION
7. IF IT 15 DETERMINED DURING CONSTRUCTION THAT SIGNIFICANT SEDIMENT IS LEAVING THE SITE, DESPITE PROPER
TRAFFIC. CONTRACTOR IS ALSO RESPONSIBLE FOR PROVIDING SAFE INGRESS AND EGRESS AT ALL TIMES FOR
IMPLEMENTATION AND MAINTENANCE OF THE EROSION CONTROL MEASURES, THE CONTRACTOR IS OBLIGATED TO
RESIDENTS OF NEARBY HOMES.
TAKE ADDITIONAL CORRECTIVE ACTION. THE CONTRACTOR SHALL CONTACT THE CITY OF RALEIGH AND THE
ENGINEER TO DISCUSS ADDITIONAL MEASURES.
7. CONTRACTOR SHALL COMPLY TO THE FULLEST EXTENT WITH ALL REGULATIONS GOVERNING THE DEMOLITION,
REMOVAL, TRANSPORTATION AND DISPOSAL OF ALL DEMOLITION DEBRIS.
8. TEMPORARY PUMP -AROUND OF BASEFLOW SHALL BE ESTABLISHED DURING CONSTRUCTION. ALL STREAM
CONSTRUCTION SHALL BE PERFORMED IN A DRY STATE. WORK AREAS SHALL BE STABILIZED AT THE END OF THE DAY.
8. CONTRACTOR SHALL BE RESPONSIBLE FOR DOCUMENTING THE CONDITION OF ALL EXISTING APPURTENANCES
(FENCING, DECKING, PAVERS, DRIVEWAYS, ETC.) THAT MAY REQUIRE REMOVAL AND RESETTING AS A RESULT OF
9. CONTRACTOR SHALL ESTABLISH GROUND COVER ON DISTURBED AREAS OUTSIDE OF STREAM BANKS WITHIN 14
THIS PROJECT.
CALENDAR DAYS AFTER COMPLETION OF ANY PHASE OF GRADING OR INACTIVITY.
9, CONTRACTOR SHALL BE RESPONSIBLE FOR ANY DAMAGE TO APPURTENANCES (FENCING, DRIVEWAYS, ETC.)
10, ONCE SITE IS FULLY STABLE, CONTACT THE CITY OF RALEIGH AND THE ENGINEER FOR SITE WALK-THROUGH PRIOR TO
DURING REMOVAL, STOCKPILING AND RESETTING OF THESE APPURTENANCES UNLESS OTHERWISE NOTED.
REMOVING ANY TEMPORARY SEDIMENT AND EROSION CONTROL DEVICES. UPON APPROVAL, REMOVE TEMPORARY
CONTRACTOR SHALL BE RESPONSIBLE FOR REPLACING ANY DAMAGED APPURTENANCES.
SEDIMENTAND EROSION CONTROL MEASURES.
10. CONTRACTOR SHALL UTILIZE, TO THE MAXIMUM EXTENT PRACTICAL, LIGHTWEIGHT EQUIPMENT
(MINI-EXCAVATOR(S), SKID STEER(S), ETC.) TO PERFORM CONSTRUCTION ACTIVITIES IN ORDER TO MINIMIZE
DISTURBANCE TO LAWNS AND LANDSCAPING.
11. THE INSTALLATION OF EROSION CONTROL MEASURES AND PRACTICES SHALL OCCUR PRIOR TO ANY AND ALL
ACTIVITIES RELATED TO STREAM STABILIZATION.
12. LOCATION OF SUB -SURFACE UTILITIES, WHETHER PUBLIC OR PRIVATE, IS BASED UPON FIELD LOCATION OF VISIBLE
APPURTENANCES AND IS APPROXIMATE. IT IS THE CONTRACTOR'S RESPONSIBILITY TO VERIFY LOCATION PRIOR TO
COMMENCEMENT OF ANY CONSTRUCTION.
13. ALL DIMENSIONS AND GRADES SHOWN ON THE PLANS SHALL BE FIELD VERIFIED BY THE CONTRACTOR PRIOR TO
CONSTRUCTION SEQUENCE:
CONSTRUCTION. CONTRACTOR SHALL NOTIFY OWNER IF ANY DISCREPANCIES EXIST PRIOR TO CONSTRUCTION.
1. OBTAIN REQUIRED PERMITS INCLUDING BUT NOT LIMITED TO USACE 404, DEQ401, BUFFER AUTHORIZATION, PRIOR
14. ALL GRADED AREAS SHALL BE SLOPED SUCH THAT NO AREAS OF STANDING WATER OCCUR AND ALL AREAS
TO ANY WORK PERFORMED ON -SITE.
POSITIVELY DRAIN TO THE STREAM OR APPROPRIATE DRAINAGE STRUCTURE.
2. CONTRACTOR TO SCHEDULE PRE -CONSTRUCTION CONFERENCE WITH THE CITY OF RALEIGH AND THE ENGINEER
15. CONTRACTOR SHALL BE RESPONSIBLE FOR RESTORING ALL LAND DISTURBED DURING CONSTRUCTION TO ITS
PRIOR TO STARTING WORK.
ORIGINAL GRADE AND LOCATION UNLESS NOTED OTHERWISE.
3. INSTALL TEMPORARY CONSTRUCTION ENTRANCE (IF REQUIRED) AND OTHER EROSION CONTROL MEASURES AS
16. TOTAL PROJECT DISTURBED AREA = 6,312 SF
SHOWN ON THE APPROVED PLANS. CLEAR ONLY AS NECESSARY TO INSTALL THESE DEVICES.
4. CALL FOR ONSITE INSPECTION BY CITY OF RALEIGH AND THE ENGINEER.
CHANNEL CONSTRUCTION NOTES:
5. BEGIN CLEARING, GRUBBING, AND TREE REMOVAL.
1. UNLESS OTHERWISE SPECIFIED, CHANNEL BED MATERIAL SHALL BE RETURNED TO ITS ORIGINAL CONDITION.
6. UTILIZE TEMPORARY STREAM DIVERSION ON PERENNIAL STREAMS TO ENSURE WORK AREA IS ISOLATED FROM
SUPPLEMENTAL CHANNEL BED MATERIAL (IF REQUIRED) SHALL BE PLACED ACCORDING TO THE RELEVANT NOTES,
STREAM BASE FLOW. ONLY PERFORM BANK STABILIZATION WORK DURING DRY CONDITIONS.
DETAILS, AND SPECIAL PROVISIONS.
2, THE TYPE, GRADATION, AND PLACEMENT OF SUPPLEMENTAL BED MATERIAL SHALL BE REVIEWED BY THE ENGINEER.
7. BEGIN BANK STABILIZATION CONSTRUCTION STARTING WITH THE DOWNSTREAM SEGMENT AND PROCEEDING
ALL BED MATERIAL THAT IS SALVAGED, SHALL NOT BE MIXED WITH SEDIMENT OR SOIL, AND SHALL BE REVIEWED
UPSTREAM.
AND ACCEPTED BY THE ENGINEER.
8. STABILIZE THE ACTIVE WORK AREA AT THE END OF EACH DAY.
3. THE CHANNEL BED SHALL BE RESTORED TO ITS FINAL CONDITION WITHIN 7 DAYS OF COMPLETING BANK
9. ESTABLISH GROUND COVER ON DISTURBED AREAS WITHIN 7 DAYS (BELOW TOP OF BANK) OR 14 DAYS (ABOVE TOP
STABILIZATION ACTIVITIES REQUIRING MACHINERY AND ACCESS WITHIN THE CHANNEL.
OF BANK).
4, THE CHANNEL BANKS SHALL BE STABILIZED ACCORDING TO THE BANK PROTECTION DETAILS.
10. WHEN CONSTRUCTION IS COMPLETE AND ALL AREAS STABILIZED CALL FOR INSPECTION BY CITY OF RALEIGH AND
5. ALL BACKFILL SHALL BE PLACED IN i FOOT LIFTS AND COMPACTED TO IN -SITU SOIL DENSITY. AREAS SHALL BE FREE
THE ENGINEER.
FROM BRUSH AND ORGANIC DEBRIS PRIOR TO BACKFILLING.
11. IF THE SITE IS APPROVED, REMOVE TEMPORARY EROSION CONTROL MEASURES AND SEED/PLANT ANY RESULTING
BARE AREAS.
SEWER CROSSING NOTES:
12. CALL FOR FINAL SITE INSPECTION BY THE CITY OF RALEIGH AND THE ENGINEER.
1. IT IS ASSUMED THAT THE 8" PVC SEWER IS ENCASED IN CONCRETE AND CAN WITHSTAND PLACEMENT OF ROCK
ADJACENT TO THE PIPE. PERFORM TEST PIT EXCAVATION PRIOR TO CONDUCTING WORK IN THIS AREA. IFTHEPIPE
IS FOUND TO BE BARE, IMMEDIATELY STOP WORK AND CONTACT A CITY REPRESENTATIVE.
2. ALL WORK ADJACENT TO THE SEWER AND THE ALTERNATIVE PROPOSED FOR SEWER PROTECTION SHALL BE
COORDINATED WITH THE CITY OF RALEIGH PUBLIC UTILITIES DEPARTMENT (CORPUD) AND APPROVED BY THE
STREAM THE DESIGN ENGINEER.
LEGEND
DECIDUOUS TREE'
A
0
DECIDUOUS TREE
® EIP
EVERGREEN TREE
71 A'C
BUSH
AR
RED MAPLE
o
IO
AMERICAN HOLLY
Jv
EASTERN RED CEDAR
O
LI
CREPE MYRTLE
O
LT
TULIP POPLAR
mWV
MG
SOUTHERN MAGNOLIA
m ICV
PT
LOBLOLLY PINE
11TPED
CIA
WHITE OAK
11CATV
TREE UNIDENTIFIED
OEM
JMB
FF=267.18'
--375--
T
CATV -
E
SS )
l
SURVEY CONTROL POINT
EXISTING IRON PIPE
A/C UNIT
COMPUTED POINT
STORM DRAIN CURB INLET
STORM DRAIN FLARED END SECTION
SANITARY SEWER MANHOLE
SANITARY SEWER CLEANOUT
WATER VALVE
IRRIGATION CONTROL VALVE
TELEPHONE PEDESTAL
TV PEDESTAL
ELECTRIC METER
FLOOD LIGHT
MAILBOX
FINISHED FLOOR ELEVATION
STREAM THALWEG'
MINOR CONTOUR (1 FT)
MAJOR CONTOUR (5 FT)
PROPERTY LINE
EXISTING EASEMENT
WOOD FENCE
UNDERGROUND TELEPHONE LINE
UNDERGROUND COMMUNICATION LINE
UNDERGROUND ELECTRIC LINE
SANITARY SEWER LINE
STORM DRAIN LINE
UNKNOWN DESTINATION
CONCRETE SURFACE
CONCRETE SURFACE`
POINT BAR MATERIAL*
DELINEATED WETLAND
PVC
POLYVINYL CHLORIDE PIPE
RCP
REINFORCED CONCRETE PIPE
WF
WOOD FENCE
VON~
PR. ROCK WALL
I
PR. ROCK WALL W/ GABIONS
owk
CONSTRUCTED RIFFLE
PR. ROCK TOE
PR. SOIL LIFTS
PROTECT EX. PAVEMENT
PR. MINOR CONTOUR (1 FT)
-375-
PR. MAJOR CONTOUR (5 FT)
LOD
PR. LIMITS OF DISTURBANCE
- - - -
PR. LIMITS OF GRADING
-TPF-
TREE PROTECTION FENCE
-SF
SILT FENCE
TEMPORARY TIMBER MATTING
CLASS A STONE (CONST. ENTRANCE)
'APPROXIMATE LOCATION;
EXAMPLE: 10QA = 10" WHITE OAK BASED ON FIELD OBSERVATION
434 Fayetteville St
Suite 1500
Raleigh, NC 27601
[phone]
wsp.com
SEAL "
045086 ' c
11/9/2020
NC License # F-0165
O
_T
U
REVISIONS
PR.ECTY' 3ATE:172-
DMWNBy. JWB CHECKED By-ST
TITLE
GENERAL
NOTES
2 OF 8

—Sig. Envelope ID9186136AD-ABDO-4D64-- 2-6671—
THE EXISTING CONDITIONS INFORMATION SHOWN (B.M 1985, PG. 221) T12A�,
IN THIS DOCUMENT WAS ORIGINALLY ISSUED ANDSEALED BY DUSTIN J. McCARTY, NC PLS L-5213, ON N/F ` N/F
ROGER L. KOSAK & °"f TED L. WERNIKOFF &
10/02/2018. SEE THE ORIGINAL PROJECT REPORT PATRICIA R. KOSAK 1 �8TREE SHERRI S. WERNIKOFF
FOR CERTIFICATE AND SEAL OF SURVEYED D.B. 3739, PG. 744A \\ � D.B. 6098, PG. 504
EXISTING CONDITIONS INFORMATION. B.M. 1985, PG. 221 B.M. 1984, PG. 556
STEWART ENGINEERING, INC. (C-1051) PIN 0797792396 \ \ \ I PIN 0797796501
2004 PETWORTH CT.� _ \ \ \ 10TREE 1204 MANTEO CT.
0 14AR \ �
EXISTING CONDITIONS MAY VARY FROM THOSE '�AR �' I s
DISPLAYED HEREIN. STREAM MIGRATION AND 869 Q 12AR 6AR 1 140
ADJUSTMENT HAS OCCURRED SINCE COLLECTION
OF SURVEY INFORMATION. 8TREE 0 12\AR
\ � 12AP,\
*TREES SHOWN ON THE SURVEY MAY HAVE BEEN 14AR 0 V 0 �b \ 8AR GRAPHIC SCALE
REMOVED PREVIOUSLY, DURING INITIAL �D \ / TREE, PREVIOUSLY
CONSTRUCTION. NO TREES ARE PROPOSED TO BE \ I REMOVED
REMOVED DURING REPAIR CONSTRUCTION, 6PT \ 0 BAR �5�
UNLESS DIRECTED OTHERWISE BY THE CITY
Z
REPRESENTATIVE OR DESIGN ENGINEER. 12PT 6TTtEE % \ S ED % I G I \ i \\ I h IN �20 )
6TR�E� 8TREE �3TR�EE \ �� �E, tOAR
6TREE \ \� 1FARQ�� J. V 8TREE
2AR
18AF \� _ I
V 1Idl ����! i �A� 6TREE WOODEN BRIDGE,
66d PREVIOUSLY REMOVED
(:� I N/F
9 \ 4AR 10� /r //\� ,�� \ I MICHAEL P. MARTIN &
ro/ A n 1 A 30AR% v 014 MYRA C. MARTIN
w � SMG r JII - �
^� D.B. 5044, PG. 821
\ - -L �• �� 01 A \_; all �18 . 24AR\�i > EE I
� B.M. 1984, PG. 556
\A
30AR PIN 0797796364
1209 MANTEO CT.
2 I - •V \. 6LI 8TREE
PRACTICE CAUTION AROUND THE 139
EXI TING ROCK BANK PROTECTION 12AR 15" RCP STORM OUTFALL
TO BE RETAINED/REPAIRE `e �� 2 A)2 G4AR I
\ (SEE SHEET 4 - 4 __, - RIM 3659.1
i cL N I IN(N)=359.14'
IN(E) 358.64'
4AR 0 8TREE IN(W)=359.14'
�olo 3j `5^ \ I OUT=358.34'
° • . . 90 . F� 12TREE
9
1 V� •' 0 6TREE
PROTECT SEWER MANHOLE AND PRACTICE
/ •'\ I I I 1 , " 10AR it I t\\ 12 R I °�sY CAUTION AROUND THE 8" PVC SEWER PIPE
CROSSING THE STREAM
CATV A / A 6TREE, 14AR
TPED\ �,/ - / �� 8U± \ \ \ 6 SSI2TRE
/V\((,O \ m H-�-
TOC=381.4T
OUT=375.97' --7—
a
RIM=384.37' WV
IN=375.27' /q
OUT=275.07' /
TRAV-100-PK
N:779206.59'
E:2097328.71'
EL:381.53'
/ Gti
/�ryry
U. VQ
hs y" Jm oy.
OQ Z o
0
TRAY-2-NL
N:779047.71'
E:2097248.75'
EL:396.07'
RIM=397.04'
INV=389.24'
ii�
i 19`N
R�E\ 12)0 1 1)
1 14\10 81�1 10TREE —\ \
1410 �� 12TREE
r m
o�--TIR ��� 1 "
ASSUMED CONCRETE ENCASEMENT
AROUND SEWER PIPE; IF PVC IS NOT
s
/
j / /
`1'STREM 6TREE 0
ENCASED STOP WORK IMMEDIATELY. ALL
' \ �,
JI
RIM=368.61' L�r1
IN=361.51' �� '
OUT=360.01' '' 'n_
12TREE
\1 \ \ 12TREE
, 16 R
�'� 14TREE
\
WORK ADJACENT TO THE SEWER LINE
SHOULD BE COORDINATED WITH CORPUD -
N/F
LL
16AR 12TREE -
WILLIAM G. TARRANT JR. &
CHRISTINE A. TARRANT
EXISTING 30'
DRAINAGE &
C' '�'�j Q)6Tk E
36t \\.I1 �.�.��
�0 STREE
0 12TREE
\ D.B. 13690, PG. 468
SANITARY SEWER
\
I
36AR I °� �AI 8TREE' 6TREE C
6TREE �\
B.M. 1984, PG. 556
PIN 0797797108
EASEMENT
(B.M. 1985, PG. 221)
i i
\�1
12AR 1212 MAURY CT.
\
m0
' \
STRF�E _ _
/
�.+
131
CONSTRUCTED BANK
PROTECTION TO REMAIN
�^ 1 / \`
I
\
0 6TREE \
yik i
U-
��'P
r�
0 10AR
�ni
soy� °
N/F
$a
7�66
-1 -� II 0IO
VEN E. COUCH &
ABETHA.COUCH
�� Il 81 1 ��' �� 18AR
h'7 1 /I I 1� S' � 36AR 0 38AR
i
3. 3600, PG. 907
A. 1985, PG. 221
; ���
�S00, �� b I \� � Q 0
g
s
IN 0797794137
1 STREET
012TREE R E
$
S87" 25' 58"W 300.32' w
PETWORTH CT.
-6 LiE�R
EXISTING 20
S71
\_ —
SANITARY 10TREE \ — Q !s'
SEWER 14AR �
_12TREE 6TREE
EASEMENT7=4 — — �N
2AR 7 �,
-
N/F
(B.M. 1985, PG.—�
221) `-N88° 16' 47"W 105.0TI
PAUL LOUTS FITCH 8
EXISTING BOULDERS 6TREE E� 0 R
����)f
LINDA OTTEN FITCH
D.B. 17180, PG. 2594 b
TO REMAIN ---- — _
B.M. 1984, PG. 933
-�
PIN 0797797023
2AR
1213 MAURY CT.
N/F
R. LAWRENCE SMITH &
ELLYN H. SMITH
D.B. 3800, PG. 347
B.M. 1985, PG. 221
-
PIN 0797794020
4
7912 FARNHAM CT.
uV
872
a
434 Fayetteville St
Suite 1500
Raleigh, NC 27601
[phone]
wsp.com
SEAL
048086
2^
V
Vl
J
O
�
t-
d
Z
TZ
t
.0
7 a v
a =N
N
�
O
Q.
O
EW
@ o»
D_ m 3
16
1
U
U0-
REVISIONS
PROJECT it DATE'. 11-033020
DRAWN BY. hYH CHECKED BY: BT
TITLE
EXISTING
CONDITIONS AND
DEMOLITION PLAN
SHEET
3 OF 8

Do S,g"Envelope ID'. 9—B—ABD04DW-8-316611A609
-� RUN DOWNSTREAM OF RIFFLE
BASIS OF BEARINGS:•� / / (TAT -10%)
NC GRID, NAD W
i INSTALL CONSTRUCTED RIFFLE
/ y (SEE DETAIL ON SHEET 7
/ (0+80 TO. 1+10)
EXTEND IMBRICATED ROCK j
_ / ✓� USING BOULDER FOOTER,
DEPTH 2.5 3'
(SEE DETAIL ON SHEET 7)
(0+80 TO 1+00) O1
GLIDE UPSTREAM OF RIFFLE
(T AT +10%) �
Ff
/6ACKFILL REPAIIRED FOOTER �
WITH MIX OF 70% CLASS I
RIPRAP AND 30% COARSE
NATIVE MATERIAL ,oQ
_ (SEE DETAIL ON SHEET
MAIINTAIN PUMP -AROUND (0+50 TO 0+80)' o ,� 0
Qp
0
� FLOW 1+50
17
9 O _
NO
4-FILC SMALL AREA OF EROSIO
r Off, _ _-;) WITH CLASS I RIPRAP: WORK TO
/ INSTALL TEST PIT TO CONFIRM
O � BE DONE BY HAND
-LOCATION AND STATE OF (
/� / SEWER LINE. BASED ON L I _
DURING ACTIVE WORK �. \ �O1 O6O FINDINGS, COORDINATE /
PERIODS ��? / / / / / -�'/ ./ / / U / /DESIGN WITH CORPUD AND
_ DESIGN ENGINEER XISTING ROCK A D SOIL LIFTS:
�'�00 ���� NSTALLED DURING INITIAL —
CONSTRU TION
_ START 6 PR POSED
- — _ STREAM CENTERLINE
(SEE SHEET 7 FOR
COORDINATE TABLE) ��� _ - ° ° / - — /YC TIE TO PREVIOUSLY IN ALLED \
0
�,_�\ \ . RIPRAP OUTLET STABILIZATION
8 0 0° o° ° / �� /—f2E-BUILD IMBRICATED ROCK ENSURE SUFFICIENT SLOPE TO
o - / / �' / FOOTER WITH GABIONS; DIRECT STORM OUTLET FLOW _ ---
,o \y i EPTH=5-6' AROUND BOULDERS RATHER
/ _ _ �' /,ice !(SEE DETAIL ON SHEET 7) \ THAN OVERIBEHIND THEM
SIDE / — BACKFILL ON STREAM DE WITH / / /� ; - (0+50 TO 0+80) \
/ MIX OF 70% CLASS I RIPRAP AND? o
/ P 30% COARSE NATIVE MATERIAL _ _L© / / ;REPAIR DA,'' AGED SOIL LIFTS \ fo
— / (SEE DETAIL ON SHEET 7) ��°�°�--LO° / �o / / / AND EXTEND ALONG PROPOSED—
(0+20 TO 0+50) ' _ / / i ANK PROTECTI(TO 1+00)/
'COARSE NATIVE MATERIAL SHALL BE COLLECTED NOTE: THIS PROPOSED STREAM PROFILE IS CUT ALONG THE PROPOSED STREAM CENTERLINE, AS DESCRIBED BY THE COORDINATE TABLE ON SHEET 7. THE
DURING EXCAVATION OF FOOTERS AND SHALL BOULDERS ARE DRAWN FOR REFERENCE, EVEN THOUGH THE PROPOSED CENTERLINE DOES NOT PASS THROUGH THEM. THE BOULDERS SHOULD BE PLACED
IJAVC a ncn 10-1CCI1 4 1 IAl!`LICC
PLAN
GRAPHIC SCALE
( IN FEET )
I Inch = 10 1t-
PROFILE: VERTICAL
GRAPHIC SCALE
�Q1 FEET )
1 i h- I M
PROFILE: HORIZONTAL
GRAPHIC SCALE
ram- t-
( IN FEET )
I inch = 10 1L
1 P:r_p:nin
s
BOULDER
s INSTALLED
b
PREVIOUSLY
PR. CL / STREAM BED
PR. TOP OF WALL
EX. CENTERLINE
EX. TOP OF BANK
EST. SCOUR DEPTH
NEWLY
PROPOSED
BOULDER
NEWLY
PROPOSED
GABION
REMOVE BOULDERS AND
REBUILD DAMAGED ROCK WALL
(APPROX. 0+50 TO 0+80)
} o
1.5'-2.5' ROCK a /
WALL
W
ESTIMATED EXISTING
FOOTER DEPTH
360 -
ALONG THE WEST BANK.
� u
W II
II W
w m
o+
n
o F n
n
r
N
1.04%
A
CONSTRUCT GLIDE
Tat +10%
II
II
w
+
al o EX. STORMWATER OUTFALL
II " INV: 365.65
n
RIFFLE HEAD N w H RIFFLE TAIL
�STA = 0+80 g 3 STA = 1+10
ELEV=361.8 to ` ELEV=361.3
ESTIMATED MAX
SCOUR DEPTH
°
EL = 359.3
APPROXIMATE
BOULDER
LOCATION (TYP)'
EL = 359.0
APPROXIMATE GABION
LOCATION (FOOTER
DEPTH OF 54)
356 (0+50 to 0+80)1
0+00 1+00
Station
PROTECT SEWER;
COORDINATE DESIGN
WITH CORPUD
8" PVC SEWER
(APPROX.)
0
O0O 0 \ -1.60%
EXISTING IN:
BANK PRO -
CONSTRUCT RUN
7' at -10%
1 1
2+00 2+25
434 Fayetteville St
Suite 1500
Raleigh, NC 27601
[phone]
wsp.com
,e•••�O+FES "`N �1
E SEAL 2
��048086
•�•1/u.eLY
11/9/2020
NC License # F-0165
2
�
N
W
O
O
_U
3 g
U &
�md
=z
� m
rn
o_
t�z
LL
Q'AA
O
O
�o�
w y3
U
U�
REVISIONS
PROJECT N DATE: 11A3VM
DRAWNBY..NYB CHECKEDBY. ET
TITLE
STREAM
STABILIZATION
PLAN AND PROFILE
SHEET
4 OF 8

D..Sign Enwla
9 \ I 434 Fayetteville St
Suite 1500
Raleigh, NC 27601
(919) 8364040
1,1 wsp.com
�-
GENERAL ESCNOTES
'.
P �LtN �RgCiy`'
MAINTENANCE' / ( I I CI / / /�/ ��= _ Ir \, I °°•,2;:�FESSJQ.,`7
ALL EROSION CONTROL MEASURES SHALL BE INSPECTED AT LEAST ONCE
PER WEEK AND AFTER ANY ME45URPElF RAINFALL EVENT ALL / \ "''I\- \ 1 \� \ /� \\ - I \ = SEAL
+j ��777 lliVVV I •;
DAMAGED MEASURES SHALL BE REPAIRED IMMEDIATELY._•1 TT 048086 Lo
I I
, \ �`�
SEDIMENT
PROTECSHALL BE REMOVED FROM ALL SILT FENCE AND INLET
ION MEASURES WHEN IT EXCEEDSY THE HEIGHT OF THE \ \ \( \ 1 / \ i �� �� ��� J I I`+ •�7L.(%
DEVICE. ,_i \ LI o i\_\ ��� �,••41N ..
PUMP -AROUND: �2j�Y" :�'� 1 \ I� / / / ( \� I 11/9/2020 ,,•
A PUMP -AROUND. SIZED TO CONVEY THE BASE STREAMFLOW. SHALL BE \ \ 1 1 Na
AN
MAINTAINED DURING Y AND ALL PERIODS OF CHANNEL\I/NC LIC@PIS@#F-016E
CONSTRUCTION. ALL WORK WITHIN THE STREAM CHANNEL SHALL BE
PERFORMED IN THE DRY. AVOIDING ANY WORK DURING PERIODS OF i�y_J O MAINTAIN PUMP -AROUND I
RAINFALL. V Cq� ' ,. A �� `�-.`^.1\y o URING ACTIVE WORK
V PERIODS
TEMPORARYSTABIGZATION: �' 'TTOPJ \ V � A O�
ALLMSTURBEDAREAS BELOW THE TOPOF BANKSHALLBE \ / C \ J,(\/ I III Ooo \
APPROPRU\TELY STABILIZED AT THE END OF EVERY DAY. ALL AREAS \ o \ \ \\ '� ` \ IIII WO ` \ WOOD I
ABOVE THE TOP OF BANK SHALL BE STABILIZED WITHIN 14 CALENDAR
DAYS USING SEED AND MULCH, IN ACCORDANCE WITH THE PROJECT INSTALL AND MAINTAI I
SPECIFICATIONS. \ ��
L i s � ILT FENCE SEE
nMBERLUTnNG:` .�v (I �( o DETAIL ON SHEET 8)
TEMPORARY TIMBER MATTING SHALL BE INSTALLED AND UTILIZED TO
PROTECT TREE ROOTS FROM SOIL COMPACTION AND PHYSICAL DAMAGE- / \
MATS SHOULD BERATED TO WITHSTAND THE EQUIPMENT BEING _ -'' \Q\\ \ \\ o Yq>� I
UTILIZED, AND SHOULD BE REPLACED IF DAMAGED AND RESET IF -r \� \ \\ o ` RIM
SHIFTED. SHIFTED EM \( .1 , I IN(N) 35914'
CLASS STONE{` \;, '�� I — w IN(E) 358.64'
CLASS A STONE SHALL BE INSTALLED, MAINTAINEDREMOVED, AND PAID
F,
OR IN ACCORDANCE WITH THE PROJECT SPECIFICATIONS (TEMPORARY ICV ° OUT=358.34'
GRAVEL CONSTRUCTION ENTRANCE). STANDARD LATERAL DIMENSIONS
O q
(LENGTH AND WIOTHJSHALL BE ADJUSTED AS NECESSARY TO ��..nn
TRANSITION BETWEEN THE EXISTING CONCRETE DRIVEWAY AND THE yV O^ \\ \ OOP
TIMBER MATTING �a
TREE DAMAGE: ' d ° V ��.i 4(� \ \ Yid o •o d Q��� \
AN V TREES THAT ARE UNINTENTIONALLY AND VISIBLY DAMAGED SHOULD
BEMENTNEIFTHE TREE SHOULD
ORTHEIOR ENGINEER TO BETENT ON DTO TREEITY REP ESENTA IVE PRIORT ENGINEER
�9' \Ir/ • y�Q•'0 ••
COMPLETION
PRaPosEo coxrouns: INSTALL AND MAINTAIN 0
� gP�0p.Q'�Op
PROPoSED CONTOURS AND LIMITS OF GRADING HAVE BEEN TURNED OFF \ \ , c TEMPORARY TIMBER £SO 0 I I
FOR CLARITY. SEE SHEET 4 FOR DETAIL REGARDING PROPOSED GRADE. °` MATTING (SEE DETAIL
) Q 1 �D• QOj \
\ Q/ ON SHEET 8 I
/ UNi'_
�� O'c
WV, ( INSTALL AND MAINTAIN CLASS A / V V
\ j `9 ° b' STONE AS TRANSITION FRO \ \ 6"PVC ss \ Z j °m' �
CAT V .J DRIVEWAY TO TIMBER MATTING /0'
0_
/ I o sue— B t f n
�1 (1
TPED A i�� /i i- ��� III' LL
o•U°od�° Z
I -6d\ / s c 0 a
// /o i o o X O O �y3
/ - Loo----LO \ 0
O
�O
i i \
v / i i 7 _ �n L.LI
\
� I � s
TOT=381.47'
OUT=375.9T
WV i / o INSTALL AND MAINTAIN i
SILT FENCE (SEE
4 / DETAIL ON SHEET 8)
WV
RIM=368.61'
1
RIM=384.37' / IN=361,51'
i IN=375.27OUT=360.01'
OUT 275.0T L
3 DRIVEWAY TO BE REPAIRED
TO PRE-CONSTRUCTIO
i CONDITION (OR BETTER) EXISTING 30' DRAINAGE &ZSANITARY SEWER EASEMENT
S (B.M. 1985, PG. 221)
� PROPOSED LIMITS OF ���
¢—DISTURBANCE
E (APPROX. 6,312 SF)
GRAPHIC SCALE
rp\ 3 II
$ ( IN FEET )ft
REVISIONS
PROJECT#'. DATE: 11-09202f1
DRAWN.'. JWB CHECKED BY: BT
TITLE
EROSION
CONTROL
PLAN
SHEET
5GF6

D—Sig, Envelope ID'. 91B6B.D- "DO -ADfiA-A4C6-2B31667I A6B9
GRAPHIC SCALE
21
cam)
1 i ch = 20 It
V 16PT L EAR
\ SHED ✓y 40AR �� - INSTALL LIVE STAKES
12PT 6TREE I \ \�� `` �\ THROUGH COIR MATTING
5TR � 8TREE ( �
6TREE b V 1FAR
I SALL LIVE STAKES -`
THROUGH COIR MATTING✓' u, AND SEED ZONE 2
(INCLUDING SOUL LIFTS)'
INS AND MAINTAIN `=� -
VEGETATION AT LEAST 8' \ 6 1
? BACK FROM FACE OF
IMBRICATED ROCK WALL ELI
IC\
04 1
1010
hI
WV
CAN
TPED
O TOC=381.47' \.
OUT=375.97'
0 WV
RIM=384.37' WV
IN=375.27' ss/
OUT=275.07'
�r
&T
INSTALL BARE
SEEDLINGS, CONTAINERIZE
PLANTS, AND SEED ZONE 3
T�
U r1jITS
�
\ STABILIZE
AND SEED ZONE
7
cti
0^/ 0 /
` / o
EXISTING 30'
DRAINAGE &
SANITARY SEWER
EASEMENT
(B,W 1985, PG. 221)
NIF
STEVEN E. COUCH &
ELIZABETH A. COUCH
SQUARE CUT r 1. Insert dibble or shovel
at angle shown and push
forward to upright
BUDS (FACING UPWAR BANK STABILIZATION WITH LIVE STAKES position
NOTE:
LIVE STAKES SHALL BE SPACED APPROXIMATELY 3 FT ON CENTER
LIVE CUTTING LIVESTAKES SHALL BE DRIVEN UNTIL APPROXIMATELY M4 OF THE STAKE 2. Place seedling to depth
(1"-2" DIAMETER) 2 — 3 Feet IS BELOW THE GROUND SURFACE grown atnursery.Make
LIVE BTAKES SHALL CONSIST OF THE SPECIFIED MIX OF SPECIES WITH NO sure root i s straight.
SINGLE SPECIES COMPRISING MORE THAN 40%OF THE TOTAL
ANGLE CUT 30'-45 LIVE STAKES SHALL BE 23 FT IN LENGTH
_ 3. Insert dibble two
inches from seedling, then
pullback top ack the soil
around roots.
COIR FIBER MAT 4. Push handle toward the
LIVE STAKES seedling to finish packing
Soil at top of roots
$. Fill in second hole by
stomping with heel.
EXISTING/PROPOSED 6. Pack soil around
GROUND seedling with feet.
EXISTING/PROPOSED
STREAM13ED
TREE V AND SEED ZONE 2
1DAR
8TREE
12AR
6TREE
N/F
MICHAEL P. MARTIN &
1' 30AR\` _ _ \ 0 14AR MYRA C. MARTIN
0 0 24AR, - - \ I D.B. 5044, PG. 821
0 6TREE B.M. 1984, PG. 556
�'', 30AR PIN 0797796364
_ I 1209 MANTEO CT.
o O� V1,00D 0 STREE ,139
so ERiDG 12AR
rich o 24AR I
�./ RIM-366.44'
IN(N)=359.14-
-- v IN(E)=358.64'
14AR Q 8TREE m n IN(W)=359.14'
I OUT=358.34'
$ 1 12TREE
C) (16TREE
� J
1
12 R I a Ps
n s
6TR
8-,PVC
s
TP,EE 12TP/tE
LO \ s O c�T 1° 4z
O 10 6/ (O�12TREE
6TR
B,fREE1� 6TREE
l/l\
\
I Y � 1 _ ✓ ( 1 12TREE
LAI
RIM=368.61' :� `,,It \�I\ (
\
,ICV
_0 tb012TREE
IN=361.51' '`'�,,i
OUT=360.01'"�C ' :� ��� 14TREE
\
.
N/F
=i✓ 16AR 12TREE
v
\
WILLIAM G. TARRANT, JR. &
:'� ;� - �� gT(t)
�� 8TREE
CHRISTINE A. TARRANT
3,G �„ 6T
'- I STREE
12TREE
\
D.B.1 984, PG. 468
B.M. 1984, PG. 556
O
` 6TREE
-i- 36AR �I
6TREE
\( 12AR \\
08
1Y 2MAURYICT.
in Il
0
8TR7`E _ � � S Ff
6TREE /.���S�iS�
131
� OAR
'��'"��
0 10AR
1EAR
8TR�E'�'BI '.� 36A1 0 36AR \
♦+++♦+++♦
ZONE 1 (180 SF)
0'0p
oon
ZONE 2 (1,274 SF)
®
ZONE 3 (1,646 SF)
GENERAL PLANTING NOTES
WOOD TREEISHRUB SPACING:
FOR ZONES 2. AND 3 THE SELECTED SPECIES OF WOODY TREESISHRUBS
SHALL BE EVENLY DISTRIBUTED THROUGHOUT THE RELEVANTZONE,
WITH NO SINGLE SPECIES COMPOSING MORE THAN 40%OF THE PI -ANTED
STEMS IN THE ZONE.
ZONE 1 SMALL SE PLANTED WITH ONLY A TEMPORARY AND PERMANENT
SEED MIX. NO WOODY SPECIES SHALL BE PLANTED IN ZONE 1
PLANTING METHODS:
LIVE STAKES SHALL BE PLANTED THROUGH Con FIBER MAT AS SHOWN
ON THIS SHEET (RANK STABILIZATION WITH LIVE STAKES'), BARE ROOT
SEEDLINGS SHALL BE PLANTED WITH A DIBBLE BAR OR OTHER APPROVED
METHOD.
SEEDING:
IN ORDER TO ESTABLISH PERMANENT HERBACEOUS GROUND COVER, ALL
ZONES SHALL BE SEEDED WITH THE APPROPRIATE SEED MIX (RIPARIAN),
SUPPLIED BY ERNST SEED COMPANY OR AN APPROVED EQUAL. ALL
PERMANENTRRPAR AN SEED MIXES SHALL BE APPROVED BY EITHER A
REPRESENTATIVE OF THE CITY OF RALEIGH OR THE ENGINEER,
A TEMPORARY SEED MIX MAY BE REWIRED IMMEDIATELY AFTER
CONSTRUCTION TO ENSURE RAPID VEGETATIVE ESTABLISHMENT.
SPECIFICATIONS:
UNLESS OTHERWISE STATED, SEED MIXES. LIVE STAKES. AND BARE ROOT
SEEDLINGS SHALL COMPLY WITH THE PROJECT SPECIFICATIONS.
PLANT ESTABLISHMENT THROUGH YEAR ONE:
ALL PLANTED MATERIAL (SEED, LIVE STAKES. AND WE ROOT
SEEDLINGS) SHALL BE WATERED, MAINTAINED, AND REPAIRED AFTER
EXPERIENCING ANY DAMAGE FROM RAINFALL, EROSION, HUMANS, OR
ANIMALS. THE CONTRACTOR IS RESPONSIBLE FOR COORDINATING WITH
THE CITY OF RALEIGH ANDOR THE ENGINEER TO ENSURE THE SURVIVAL
OF AT LEAST 70%OF PLANTED WOODY STEMS AFTER YEAR ONE.
WOODY TREEISHRUB SPECIES FOR ZONES 2 AND 3:
ZONE 2:
STREAM BANK: SHALL BE PLANTED WITH A MIXTURE OF LIVE STAKES OF 2-3
FT LONG. THE LIVE STAKES SHOULD BE SPACED 3 FEET WART (4.840 TPA).
THE CONTRACTOR SHALL USE AT LEAST THREE OF THE FOLLOWING FIVE
SPECIES.
-ALNUS SERRULATA (TAG ALDER) nsl
-SAMSUCUS CANADENSIS(ELDERBERRY)AR
CORNUS AMOAWM (SILKY DOGW0001'�r
-SALIX SERICEA ISEKY WILLOW) As
VIBURNUM DENTA TUM(ARROWNOOD VIBURNUM) Re
ZONE 3:
RIPARIAN: SHALL BE PLANTED WITH A MIXTURE OF BARE ROOT SEEDLINGS
AND CONTAINERIZED PLANTS.
BARE ROOT SEEDLINGS:
-PLANT AT A SPACING OF 8 FT (IZIO TPA)
-TWO OF THE FOLLOWING THREE SPECIES:
BEIUW NIGRA (RIVER BIRCH) ry
NYSS4 SYLVAVCA (BLACK GUM) ar,
ACER MEGUNDO (BOX ELDER).M.
CONTANERVED PLANTS:
-PLANT AT ASPACING OF 10 FT 11N TPA)
-TWO OF THE FOLLOWING FOUR SPECIES'.
DIOSPYROS VIRGWIANA (PERSIMMONI K°I
NYSSA SYLVATICA (BLACK GUM)
ACER NEGUNDO (BOX ELDER) Nv:
CARPINUS CAROLINIANA (AMERICAN HORNBEAM) KH
APPROXIMATE TOTAL QUANTITIES(WOODY STEMS):
ZONE 2:
16C LIVE STAKES
ZONE 3:
SO BARE ROOT SEEDLINGS
16 CONTAINERIZED PLANTS
434 Fayetteville St
Suite 1500
Raleigh, NC 27601
[phone]
wSP.Corn
SEAL
048036
11/9/2020' o•
NC License # F-0165
�
r2
V
Tn
15
J
0
8
"d
T Z
1.
1-= a c
m
L m
m rn
00
O
U
U0-
REVISIONS
PROJECT p: DATE'. 11-20
DRAWN BY: .M'B CHECKED aY. ST
TITLE
PLANTING
PLAN
SHEET
60F8

D°c°Sign Env°1° ID 91S6B6AD ABD04-"C8213316671ABB9
EXISTING GROUND
COIR FIBER MATTING SECTION A -A
SECTION WITH ROCK BANK PROTECTION
OVERLAP COIR FIBER
MATTING AND
GEOTE XTI LE `RIFFLE MATERIAL
COMPACTED BACKFILL
SEE IMBRICATED ROCK DETAIL
(THIS SHEET)
COIR FIBER MATTING
EXISTING GROUND -
CONSTRUCT BANK TO
SECTION B-B
OVERLAP RIFFLE
MATERIAL 3' MIN.
SECTION WITHOUT ROCK BANK PROTECTION
UNDISTURBED BANK
TOE OF SLOPE
- DO NOT DISTURB
EXISTING BANK
RIFFLE MATERIAL-
r�
KEY IN COIR FIBER
MAT (MIN 3')
3,
NOTES:
1. RIFFLE BED MATERIAL SHALL CONSIST OF A HARD DURABLE STONE WITH A
WELL GRADED GRAVEL AND COBBLE ROCK MIXTURE WITH A MEDIAN ROCK
SIZE OF 9-INCHES AND A MAXIMUM ROCK SIZE OF 24-INCHES.
2. RIFFLE BED MATERIAL SHALL BE PLACED AT A STANDARD MINIMUM DEPTH
OF 2-FEET ALONG THE ENTIRE LIMITS OF THE RIFFLE, GLIDE, AND RUN.
WHERE REQUIRED TO ACHIEVE THE PROPOSED GRADE, OVER -EXCAVATION
OF THE EXISTING CHANNEL BED SHALL BE PERFORMED FOR PLACEMENT
OF THE RIFFLE BED MATERIAL TO THE STANDARD DEPTH.
3. THE RIFFLE BED MIXTURE SHALL BE PLACED TO EXTEND 2-FEET INTO THE
STREAM BANKS BEYOND THE TOE OF SLOPE WHERE FEASIBLE. ALONG
SECTIONS OF IMBRICATED ROCK/GABION WALL PROTECTION THE RIFFLE
MATERIAL SHALL BE IMMEDIATELY ADJACENT. ALONG UNDISTURBED
BANKS, THE MATERIAL SHALL BE PUSHED UNDER THE TOE OF THE BANK AS
FAR AS POSSIBLE WITHOUT DISTURBING THE STABILITY OF THE EXISTING
BANK.
4. AFTER COMPLETE PLACEMENT OF THE RIFFLE BED MIXTURE TO THE FINAL
DESIGN LINE AND GRADE, SALVAGED OR FURNISHED CHANNEL SAND AND
GRAVEL SHALL BE WASHED INTO THE RIFFLE BED MIXTURE TO BLOCK THE
CHANNEL BED PORE SPACES. UPON OPENING OF THE CHANNEL SECTION
TO NORMAL BASEFLOW. FLOW SHALL TRAVEL ALONG THE SURFACE OF
THE RIFFLES WITHOUT SUBSURFACE FLOW. IN THE EVENT OF
SUBSTANTIVE SUBSURFACE FLOW, ADDITIONAL MATERIAL WASH IN WILL BE
REQUIRED. THE FINAL RIFFLE SHALL BE REVIEWED BY THE DESIGN
ENGINEER TO VERIFY THE SUCCESS OF MATERIAL WASH -IN.
A
• IMBRICATED ROCK
C (DISPLAY ONLY, SHAPE
AND SIZE IS NOT TO
SCALE)
e
• � -Poo
PLAN VIEW
�___j
2'
EXISTING GROUND
EXISTING STREAM BANK -
PUSH RIFFLE MATERIAL UNDER
TOE OF BANK AS MUCH AS
POSSIBLE WITHOUT DISTURBING
BANK
o Q
o � o
0 2
RIFFLE MATERIAL GRADATION
MATERIAL
D50
%BY WEIGHT
NATIVE BED
1-2"
25%
CL I RIPRAP
10"
50%
CL II RIPRAP
14"
25
TOTAL
1: LIVE STAKES
AP LIFTS IN COIR FIBER MATTING
-TOPSOIL LAYER
TOP OF WALL
1' //�� NATIVE BED
2-2 5iF MATERIAL
SECTION VIEW
WITH SOIL LIFTS
(STATION: 0+50 - 0+80)
�BACKFIIL INSTALLATION
_. TRENCH WITH 70% CL I RIPRAP
- WITH 30% NATIVE BED MATERIAL
(MIN. WIDTH = 2')
GABION BASKET FOOTER
(5-6' DEEP)
_ SOIL STABILI ZA11ON/LIFTS
(AS CONSTRUCTED)
EXISTING GROUND
IMBRICATED ROCK
SOIL STABILIZATION MATTING
- (AS CONSTRUCTED)
UNDISTURBED B
PUSH RIFFLE MA
TOE OF BANK A
POSSIBLE WITHOUT
BANK
WIDTH OF RIFFLE VARIES
(APPROX. 20') SEE
PLAN VIEW
BANK
MATERIAL
-EXISTING BANK
PUSH RIFFLE MATERIAL
UNDER BANK WITHOUT
DISTURBING SOIL OR
VEGETATION
B
o
so °
0 0
O° o� o0�e0
O
�o o
o OpO �o A� o
Cpoo°
0 oOC1° (DO
0 0
3 °or sLpPE
TOP OF BANK
B
FURNISHED RIFFLE MATERIAL(START OF GLIDE TO END OF RUN)
1
1 1 RIFFLE (30') -- 4�RUN (T POOLS
FLOW
O
CD
FURNISH KIF 6\�FLE O D Q i�O et
MATERIAL (MIX) '
PROFILE VIEW
EXISTING BED TYPICAL RIFFLE
MATERIAL NOT TO SCALE
CONSTRUCTED RIFFLE DETAIL
NOT TO SCALE
NOTES: SOIL LIFTS
1. SOIL LIFTS ARE TO BE CONSTRUCTED USING COIR FIBER MATTING AND SALVAGED/FURNISHED TOPSOIL.
2, COIR FIBER MATTING SHALL EXTEND UNDER EACH LIFT BY AT LEAST 4 FEET.
3. SOIL LIFTS ARE TO BE CONSTRUCTED IN 1 FOOT LIFTS MEASURED FROM TOP OF LIFT TO TOP OF LIFT. AT LEAST
THE TOP 61NCHES OF EACH LIFT SHALL BE TOPSOIL. THE REMAINDER CAN BE COMPOSED OF SALVAGED,
EXCAVATED SOIL.
4. SEED MIXTURE, AS SPECIFIED IN THE PLANTING PLAN (SHEET 6) IS TO BE SPREAD ACROSS THE EXPOSED FACES
OF THE SOIL LIFTS. SEED MIXTURE IS TO BE APPLIED TO THE TOPSOIL LAYER PRIOR TO COVERING WITH COIR
FIBER MATTING.
5, LIVE STAKES ARE TO BE INSTALLED THROUGHOUT THE SOIL LIFTS PLACED ON A TRIANGULAR GRID AND
SEPARATED BY 1.5 FEET CENTER TO CENTER.
NOTES: IMBRICATED ROCK/GABION WALL
I. IMBRICATED ROCK/GABION WALL SHALL BE CONSTRUCTED IN A GAP -FREE SEQUENCE
2. SELECTION OF BOULDERS/GABIONS TO BE USED FOR TOP ROCKS AND FOOTER ROCKS AND THE ANGLE AT
WHICH THEY ARE TO BE INSTALLED SHALL BE COORDINATED WITH THE CITY REPRESENTATIVE AND DESIGN
ENGINEER PRIOR TO PLACEMENT.
3. GEOTEXTILE IS TO BE PLACED BEHIND ENTIRE LENGTH OF BANK PROTECTION TO PREVENT BACKFILL AND
NATURAL SOIL FROM PIPING THROUGH THE PROTECTION. FABRIC SHALL BE TRIMMED AT THE FACE SUCH THAT
NO FABRIC IS VISIBLE ABOVE THE FINISHED SURFACE.
4. ROCKS IN EACH SUCCESSIVE LAYER SHALL BE STAGGERED ATOP THE PREVIOUS LAYER, CREATING A SHINGLED
EFFECT.
5. THE FRONT FACE OR OUTER SURFACE OF THE BANK PROTECTION ALONG THE EDGE OF WATER SHALL BE
RELATIVELY EVEN AND PRESENT A GENERALLY NEAT APPEARANCE. NO ROCKS SHALL PROTRUDE INTO THE
CHANNEL.
6. CUTOFF ROCKS SHALL TRANSITION TO APPROXIMATELY 30 DEGREES INTO BANKS FOR TWO ROCK LENGTHS.
7. BEHIND TOP ROCKS, COIR FIBER MATTING SHALL OVERLAP THE GEOTEXTILE BY A MINIMUM OF 7.
8. GABION BASKETS SHALL BE ASSEMBLED, FILLED WITH STONE, AND TIED TOGETHER ACCORDING TO
MANUFACTURER RECOMMENDATIONS. STONE SIZE SHALL BE APPROXIMATELY 4-8" TO PREVENT ANY LOSS OF
MATERIAL THROUGH THE GABION BASKET OPENINGS.
IMBRICATED ROCK/GABION WALL PROTECTION DETAIL
NOT TO SCALE
Stream Centerline Alignment: Layout Table
Point
PI Station
Northing
Easting
Radius
Length
PI
0+00.00
779348.22
2097438.40
PC
0+19.55
779330.95
2097429.23
PI
0+45.27
779308.24
2097417.16
30
42.52
PT
0+62.08
779292.94
2097437.76
PI
0+92.63
779274.56
2097462.24
PI
1+07.28
779263.01
2097471.25
PI
1+16.83
779253.48
2097471.84
PI
1+31.75
779240.31
2097478.86
PI
1+36.92
779235.20
2097479.63
PI
1+48.75
779223.44
2097480.89
PI
1+56.36
779215.94
2097479.57
PC
1 1+67.17
779205.52
2097476.70
PI
1+79.85
779193.29
2097473.33
30
24.00
PT
1+91.17
779182.36
2097479.75
PI
2+14.03
779162.64
2097491.33
PI
2+19.44
779158.06
2097494.22
PI
2+24.74
779152.78
2097494.42
PI
2+30.97
779146.56
2097494.78
PI
2+49.60
779134.18
2097508.71
PI
2+65.71
779127.35
2097523.30
PI
2+75.40
779120.51
2097530.16
PI
2+88.61
779109.92
2097538.06
434 Fayetteville St
Suite 1500
Raleigh, NC 27601
[phone]
WSP.Com
SEAL
045086
e•cr�;11`pdie„ •�
11/9/2020
License # F-0165
2^�
V
z
N
w0
O
5md
=z
7 a.
a=
LL
N
5 3 3 2,
4) i
0
O
oN3
U
UCL
REVISIONS
PROJECT#. DATE 11A920N
DRAWN By JWB CHECKED BY. BT
TITLE
STREAM
DESIGN
DETAILS
SHEET
70F8

FLOW
TRENCH IN
MATTING
■■■■■■■■■■■IdIM■■
ANCHOR TRENCH
ON 1' CENTERS
ANCHOR OVERLAP
ON V CENTERS
■
THIS SIDE ON TOP THIS SIDE UNDERNEATH
' I i L-- 6" (MIN.) OVERLAP IN
DOWNSTREAM DIRECTION
12'. ANCHORS
ON 3' CENTERS
2" x 2" x 24"
WOODEN STAKES
COIR FIBER MATTING DETAIL
NOTE: NOT TO SCALE
COIR FIBER MATTING SHALL BE UTILIZED ON ALL
DISTURBED BANKS AND FLOODPLAINS.
COIR FIBER MATTING TO BE FURNISHED AND INSTALLED IN
ACCORDANCE WITH THE PROJECT SPECIFICATIONS.
MATTING SHALL BE
PLACED IN TRENCH
AND BACKFILLED
COIR FIBER o
MATTING ., z —NATURAL GROUND
APPROVED PLAN VIEW STREAM
DEWATERING
DEVICE DISCHARGE DIVERSION
HOSES PUMPS
P INTAKE
HOSE
P EWATERING A A
i'
l / FLOW L \ FLOW
EPUMPS
INTAKE HOSE � SEDIMENT CLEAN WATER SUMP -HOLE OR
DIKE -�/ I POOL(12"TO18-
DEEP 2' DIA.)
SHOULD ---WORK
DISCHARGEONTOA WOR LENGTH
STABLE VELOCITY NOT TO EXCEED THAT
DISSIPATOR MADE Of WHICH CAN BE
RIP RAP OR COMPLETED IN ONE DAY
SANDBAGS Section ALA
WEIGHT IMPERVIOUS
SHEETING WITH SANDBAG
WORK AREA BASE FLOW FOOT
(2 FOOT MINIMUM)
CROSS SECTION OF
SANDBAG DIKE
IMPLEMENTATION SEQUENCE:
SEDIMENT CONTROL MEASURES, PUMP -AROUND PRACTICES, AND ASSOCIATED DREDGE CONSTRUCTION
SHOULD BE COMPLETED IN THE FOLLOWING SEQUENCE (REFER TO DETAIL).
1. THE CONTRACTOR SHOULD ONLY BEGIN WORK IN AN AREA WHICH CAN BE COMPLETED BY THE END
OF THE DAY. AT THE END OF EACH WORK DAY, THE WORK AREA MUST BE STABILIZED AND THE PUMP
AROUND REMOVED. WORK SHOULD NOT BE CONDUCTED IN THE STREAM DURING RAIN EVENTS.
2. SANDBAG DIKES SHOULD BE SITUATED AT THE ENDS OF THE WORK AREA AS SHOWN ON THE PLANS,
AND PONDED WATER SHOULD BE PUMPED AROUND THE WORK AREA. THE PUMP SHOULD DISCHARGE
ONTO A STABLE VELOCITY DISSIPATER MADE OF RIPRAP OR SANDBAGS.
3. WATER FROM THE WORK AREA SHOULD BE PUMPED TO A SEDIMENT FILTERING MEASURE SUCH AS A
DEWATERING BASIN, SEDIMENT BAG, OR OTHER APPROVED SOURCE. THE MEASURE SHOULD BE
LOCATED SUCH THAT THE WATER DRAINS DOWNSTREAM OF THE POND.
4. AFTER AN AREA IS COMPLETED AND STABILIZED, THE CLEAN WATER DIKE SHOULD BE REMOVED.
AFTER THE FIRST SEDIMENT FLUSH, A NEW CLEAN WATER DIKE SHOULD BE ESTABLISHED FROM THE
OLD SEDIMENT DIKE. FINALLY, ESTABLISH A NEW SEDIMENT DIKE BELOW THE OLD ONE, AND RESUME
PUMPING TO THE APPROPRIATE END TREATMENT (VELOCITY DISSIPATOR OR DEWATERING DEVICE).
TOE MATTING INTO
PROPOSED/EXISTING BED
BY A MINIMUM OF 12" �O
6" MIN
N
ANCHORS
SEED AND STRAW
ANCHORS ON 3' CENTERS
STREAM BED \
'-2"
x 2" x 18" HARDWOOD
BANK PROTECTION
STAKES ON 3' CENTERS
COIR MATTING
NOT TO SCALE
NOTES
1. TIMBER MATTING SHALL BE:
1.1. CONSTRUCTED OF LAMINATED
TIMBERS WITH A MINIMUM TOTAL
MAT THICKNESS OF 6INCHES.
2' MIN. OVERLAP
1.2. AT LEAST 2 FEET WIDER THAN ANY
CONSTRUCTION EQUIPMENT
TRAVERSING THE MAT.
1.3. OF SUCH A QUALITY THAT THERE IS
NO VISIBLE DEFLECTION DURING
TRAVERSE.
1.4. OVERLAPPED A MINIMUM OF 2 FEET.
1.5. INSTALLED PRIOR TO ANY
'
EQUIPMENT ACCESSING THE AREAS
-
WHERE MATTING HAS BEEN
DESIGNATED.
2. THE CONTRACTOR SHALL PROVIDE ANY
ALTERNATIVE TO THE TIMBER MATTING
DESCRIBED ABOVE TO THE CITYS
PROJECT MANAGER OR THE ENGINEER
FOR APPROVAL.
TIMBER MATTING
NOT TO SCALE
TEMPORARY PUMP AROUND
„.r Tp SCALE
12'-16'
HIGH STRENGTH
BAG PLACED ON DOUBLE STITCHED
AGGREGATE "J" TYPE SEAMS
' Hill is"I Mill
8°W:�.I,.li .,,11:11 4ptttRaN;,
SIDE VIEW
OR
/»RET.EA
'iiii■■■■r-----�■■■■iiiii�
II..
]■L
_J■1
III
III
II ��s
��I•�■���5{Aw���a��S�A�II�
I'IIIU11
',IIIIII
FRONT VIEW
NOTE. FOR TREE PROTECTION ONLY I
NDres: WARNING SIGN DETAIL
PLASTIC OR
VARIARLE ASOIRECTTEED RV THE ENGINEER qE TIES
In
MAINTENANCE: WARES ATE
CLEAN OUT AT 33% CAPACITY GRACE
LIFE OF FENCING: III =IIIN IIIIa._ �I 11'I�I III P10h1JgRNPRI=111FRRN1IIF511m IIIII
6-9 MONTHS Ip
FRONT VIEW
tl11
RTEELPGRT
WOVENWIREFAERIC
2 NOTES:
�^ OW SHALL NOT RUN PA EL WITHTHEPENCE 4 LL SLOPE
Q O ENO OFSILT PENCE NEEDS TO BE TLENED UPHILL
N y E DENR PRACTICE STANDARD$ 6
cy o G r PLANNING C`0 SmSPECI
� TIONS S DESIcx CRITERIA. RAGS
i iA m n ,�..._
Mw\sRTFENCEGEGTExTILE EASE.
O M i
m C Y SIDE VIEW
NOTE:
SILT CONTROL SYSTEM TO BE USED IN CONJUNCTION WITH
PUMP AROUND IF DEEMED NECESSARY BY SEDIMENT
CONTROL INSPECTOR.
DEWATERING/FILTER BAG MATERIALS SPECIFICATIONS:
THE DEWATERING/FILTER BAG SHALL BE MADE OF
NON -WOVEN GEOTEXTILE WITH A MINIMUM SURFACE AREA
OF 225 SQUARE FEET PER SIDE. ALL STRUCTURAL SEAMS
SHALL BE SEWN WITH A DOUBLE STITCH USING A DOUBLE
NEEDLE MACHINE WITH HIGH STRENGTH THREAD. THE
SEWN IN SPOUT
SEAM STRENGTH SHALL WITHSTAND 100LB/IN USING ASTM
HIGH STRENGTH
D4884 TEST METHOD. THE DEWATERING/FILTER BAG
STRAPPING FOR
SHALL HAVE A NOZZLE LARGE ENOUGH TO ACCOMMODATE
HOLDING HOSE IN
A FOUR INCH HOSE. THE NOZZLE SHALL BE SEALED
PLACE
TIGHTLY AROUND THE DISCHARGE HOSE WITH A STRAP OR
SIMILAR DEVICE TO PREVENT UNTREATED WATER FROM
WATER FLOW
ESCAPING. THE FABRIC SHALL BE A NON -WOVEN FABRIC
FROM PUMP
WITH THE FOLLOWING PROPERTIES:
PUMP DISCHARGE
WEIGHT ASTM D-3776 10 OZ1YD
HOSE
GRAB TENSILE ASTM D4632 270 LBS
OPENING
PUNCTURE ASTM D4833 150 LBS
ACCOMODATES
FLOW RATE ASTM D4491 70 GAUMIN/SQ FT
UP T04"
PERMITIVITY ASTM D4991 1/1.3 SEC
DISCHARGE
UV RESISTANCE ASTM D4355 70
HOSE
ADS h RETAINED ASTM D4751 100
CONSTRUCTION:
THE DEWATERING/FILTER BAG SHALL BE INSTALLED OVER
A 31NCH GRAVEL BASE TO PROMOTE INFILTRATION AND
DEWATERING OF THE FILTER BAG.
ttxlin 7Mr")I`''&Ix"I $;ggd$a1
TOP VIEW
AGGREGATE
UNDERLAYMENT SIDE VIEW
434 Fayetteville St
Suite 1500
Raleigh, NC 27601
[phone]
WSP.Com
SEA' 'T
-_ 048086
11/9/2020
License # F-01
2 F-
ry
(D z)
W 0
Q V0
i Z
L N
f0
00
1 r
Ua-
Y
E m
m rn'm
L ? c
Cc € H
f6
2' A 3
O
U
REVISIONS
PROJECT W. DATE: 11-04303a
DRA E, JWB CHECID:D BY: BT
TITLE
EROSION CONTROL
DETAILS
DEWATERING DEVICE
NOT TO SCALE
SHEET
8 OF 8