20110235 Ver 1_401 Application_20110311

1 1 2 3 5
???1( l? /?I t.?f(Pff 1(
March 9, 201 1
Ms. Laurie Dennison
North Carolina Department of Environment
and Natural Resources (NC-DWQ)
Division of Water Quality
401/Wetland Unit
1650 Mail Service Center
Raleigh, NC 27699-1650
Re: Preconstruction Notification Application Form for
Streambank Stabilization at:
10605 Silverwood Creek, Raleigh, NC 27614
Dear Ms. Dennison:
pp ?EN? f
e"FZa??a: d! or.eti'}sa ?r?'f>...!? -17,,
f
Please find enclosed five copies of a completed "Preconstruction Notification Application Form" for the
referenced project. I am submitting one copy of this application concurrently to Mr. Monte Mathews with
the United States Army Corps of Engineers.
This stream stabilization project impacts less than 500 linear feet and meets the criteria established under
the US Army Corps Nation wide (NWP 13) Permit. This stream is subject to the Neuse River Riparian
Area Protection Rules and the proposed stabilization activities are not exempt under Neuse Riparian Buffer
Protection Rules - Rule .0233 (15A NCAC 213.0233). Therefore written concurrence from NC-DWQ is
sought per conditions established in Condition 6 under NC-DWQ's General Permit - GC3495.
We are also attaching a check for $570.00 (stream impact greater than 150 ft).
Thank you for your assistance in processing this application. If I may answer any questions concerning the
application, please contact me at [phone].
Sincereell
E? ?, "
Sheila Thomas-Ambat
Stormwater Project Engineer
STA/
Enclosures
cc: Mr. Monte K. Matthews
OFFICES • 222 WEST HARGETT STREET • POST OFFICE BOX 590 • RALEIGH, NORTH CAROLINA 27602
RECYCLED PAPER
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Cpl ? ? ??' CCl'>/e
. it ? r?/ ??,???•%„<,
March 9, 2011
Mr. Monte K. Matthews
Raleigh Regulatory Field Office
U. S. Army Corps of Engineers
3331 Heritage Trade Drive
Suite 105
Wake Forest, NC 27587
Re: Preconstruction Notification Application Form for
Streambank Stabilization at:
10605 Silverwood Creek, Raleigh, NC 27614
Dear Mr. Matthews:
Please find enclosed one copy of a completed "Preconstruction Notification Application Form"
for the referenced project. This stream stabilization project impacts less than 500 linear feet and
meets the criteria established under the US Army Corps Nation Wide (NWP 13) Permit.
I am submitting five copies of this application concurrently to Ms. Laurie Dennison with the
North Carolina Department of Environment and Natural Resources, Division of Water Quality,
401 Wetlands Unit.
Thank you for your assistance in processing this application. If I may answer any questions
concerning the application, please contact me at [phone].
Sincere ,
Sheila Thomas-Ambat
Stormwater Project Engineer
STA/
Enclosures
cc: Ms. Laurie Dennison
OFFICES • 222 WEST HARGETT STREET- • POST OFFICE BOX 590 • RALEIGH. NORTH CAROLINA 27602
RECYCLED PAPER
2 1 1 3 2 3 5
' Or,OF W A rS9,
L -?
Office Use Only:
Corps action ID no.
DWQ project no.
Form Version 1.3 Dec 10 2008
Pre-Construction Notification PCN Form
A. Applicant Information
1. Processing :Aa
1 a. Type(s) of approval sought from the
Corps: ®Section 404 Permit ? Section 10 Permit '?--
1 b. Specify Nationwide Permit (NWP) number: NW 13 or General Permit (GP) number:
1 c. Has the NWP or GP number been verified by the Corps? ? Yes ® No
1 d. Type(s) of approval sought from the DWQ (check all that apply):
® 401 Water Quality Certification - Regular ® Non-404 Jurisdictional General Permit
? 401 Water Quality Certification - Express ® 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 ® No For the record only for Corps Permit:

? Yes ® No
1f. Is payment into a mitigation bank or in-lieu fee program proposed for mitigation
of impacts? If so, attach the acceptance letter from mitigation bank or in-lieu
fee program. ? Yes ® No
1 g. Is the project located in any of NC's twenty coastal counties. If yes, answer 1 h
below. ? Yes ® No
1 h. Is the project located within a NC DCM Area of Environmental Concern (AEC)? ? Yes ® No
2. Project Information
2a. Name of project: 10605 Silverwood Creek
2b. County: Wake
2c. Nearest municipality / town: Raleigh p
(Fa
2d. Subdivision name: n/a ! . ..
2e. NCDOT only, T.I.P. or state
project no: ?--? i
g f'ii7 fr' ,
3. Owner Information
?N
3a. Name(s) on Recorded Deed: Michael & Sylvetta Washington -?" N fA:t Ty,
3b. Deed Book and Page No. 10445/1109 encn
3c. Responsible Party (for LLC if
applicable):
3d. Street address: 10605 Silverwood Creek Drive
3e. City, state, zip: Raleigh, NC 27614
3f. Telephone no.:
3g. Fax no.:
3h. Email address:
Page 1 of 12
PCN Form - Version 1.3 December 10, 2008 Version
S .
4. Applicant Information (If different from owner)
4a. Applicant is: ? Agent ® Other, specify: City of Raleigh
4b. Name: Carl R. Dawson _
4c. Business name
(if applicable): City of Raleigh Public Works Department
4d. Street address: 222 West Hargett Street, PO Box 590
4e. City, state, Raleigh, "iC 270 2
4f. Telephone no.: 919-966-3030
4g. Fax no. 9-966-7638
4h. Email .daw [e-mail]
5. Agent/Consultant Information (if applicable)
5a. Name: Becky L. Ward, PE
5b. Business name
(if applicable):
Ward Consulting Engineers, PC
5c. Street address: 8368 Six Forks Road, Suite 104
5d. City, state, zip: Raleigh, NC 27615
5e. Telephone no.: 919-870-0526
5f. Fax no.: 919-870-5359
5g. Email address: [e-mail]
Page 2 of 12
PCN Form - Version 1.3 December 10, 2008 Version

V
B. Project Information and Prior Project History
1. Property Identification
1a. Property identification no. (tax PIN or parcel ID): 1728487581
1 b. Site coordinates (in decimal degrees): Latitude: 35.91563 Longitude: - 78.578347
(DD.DDDDDD) (-DD.DDDDDD)
1c. Property size: 0.51 acres
2. Surface Waters
2a. Name of nearest body of water (stream, river, etc.) to
proposed project:
UT to Neuse River
2b. Water Quality Classification of nearest receiving water: C;NSW
2c. River basin: Neuse
Page 3 of 12
PCN Form - Version 1.3 December 10, 2008 Version
3. Project Description
3a. Describe the existing conditions on the site and the general land use in the vicinity of the project at the time of this
application:
The project is located in a well-established residential area of Raleigh, NC and consists of a 0.51 acre parcel. The size
and age of the house on this lot is typical of the residential development in this area. The watershed for this project is
almost fully developed and almost entirely consists of residential development. Bankfull conditions measured in the field
predict the stream discharge at bankfull to be approximately 80 cfs. Velocities in the channel are approximately 3.5 feet
per second for the bankfull storm event.
The stream is located in the rear yard of the house at 10605 Silverwood Creek Drive. The stream is currently in a
wooded buffer. A sanitary sewer line and easement is located on the south side of the stream approximately 10 to 20 feet
away from the existing top of bank. Approximately 20 feet below the upstream property line the stream flows over a rock
waterfall. This waterfall has stopped the head cut from progressing upstream. The stream above the rock waterfall
remains connected to the floodplain with a channel that remains close to historic dimensions as shown in the cross
sections, profiles and supporting data section of this report, existing cross section 1 station 0+74. The stream has incised
below the waterfall approximately 3.5 feet. A large plunge pool is located at the base of the waterfall. The water during
large storm events is beginning to shape a new channel to the south of the existing channel above the waterfall. The
existing rock grade control may be bypassed if the new channel formation is allowed to progress. The breach of the
waterfall grade control would destabilize the channel upstream of the project area, which is currently in very good
condition. Below the waterfall the stream goes through a significant sharp bend on the property. The stream in this bend
is eroding the toe of the stream embankment that extends approximately 10 feet in vertical height. The continued erosion
of the stream toe is undercutting this bank causing bank slumping and failure which continues to progress after each
storm event. There is evidence of additonal bank undercutting at a segment of bank at stations 1+10 to 1+40 and station
2+20 through 2+60. A fallen tree has caused an additonal sharp bend at station 2+60. The stream is actively eroding
during storm events causing sediment to be imported into the stream.
3b. List the total estimated acreage of all existing wetlands on the property:
none
3c. List the total estimated linear feet of all existing streams (intermittent and perennial) on the property:
218
3d. Explain the purpose of the proposed project:
The purpose of the project is to stabilize the stream to prevent additional erosion and sediment deposition into the stream.
The stabilization includes working with the existing channal pattern and stabilizing the undercut banks. Additonally the
project will fill and stabilize the channel that is currently forming upstream of the existing rock grade control to prevent a
head cut from proceeding upstream.
3e. Describe the overall project in detail, including the type of equipment to be used:
The project will consist of stream stabilization along approximately 200 feet of stream at the property located at 10605
Silverwood Creek Road. The project will repair severely undercut banks at four locations along the stream and stabillize
a new channel that is forming upstream of the waterfall. The repairs will consist of establishing rock and boulder toes at
the base of the stream banks that will be graded to a stable slope. At the location of the steepest stream bank, station
1+80 a rock base with vegetated soil lifts is proposed for the bank stabilization measure. This area required a vertical
solution due to the height of the existing bank and preservation of the existing trees in the adjacent terrace. The point bar
at this bend will also be graded back to provide relief and a better flow pattern for large storm events. The regraded
stream banks wil be seeded, matted, and planted with woody vegetation for long term stabilization. The wooded buffer in
Zone B impacted by construction will be seeded, mulched, and woody vegetation will be planted to suppliment the
understory. Zone C which consists of the current lawn area will be re-seeded to match the existing grass on the property.
The equipment to be used in this project is earth moving equipment and various other support apparatus. Heavy
equipment may include hydraulic excavator, conpactors, bulldozers, skidsteer loaders, and material hauling apparatus
such as a dump truck. This type of equipment will be used for excavation and placement of materials for the project. The
construction equipment will enter off of Silverwood Creek at the project property 10605. The construction equipment will
only cross the stream at the designated temproary stream crossing location.
Page 4 of 12
PCN Form - Version 1.3 December 10, 2008 Version
4. Junsulcoonal Determinations
4a. Have jurisdictional wetland or stream determinations by the
Corps or State been requested or obtained for this property /
project (including all prior phases) in the past?
Comments:

? Yes ® No ? Unknown
4b. If the Corps made the jurisdictional determination, what type
of determination was made?
? Preliminary ? Final
,C. If ye0, WI11 G
dciir ieatGU thG Jul 3uictivnal areas?
Name (if known):
Agency/C;onsuitant company:
Other:
4d. if yb§, list M1 dabs 6f M65 C6FP9 jUiMidti6hAI d6f6i`TMR`1ati6i19 6r Stab dbfOMii5 OM9 bid afbt;fi CIMUiiiwati6rn.
5. Project History
5a. Have permits or certifications been requested or obtained for
this project (including all prior phases) in the past?
? Yes ®No ? Unknown
5b. If yes, explain in detail according to "help file" instructions.
6. Future Project Plans
6a. Is this a phased project? ? Yes ® No
6b. If yes, explain.
Page 5 of 12
PCN Form - Version 1.3 December 10, 2008 Version
?. riupuseu impacts inventory
1. Impacts Summary
1 a. Which sections were completed below for your project (check all that apply):
? Wetlands ® Streams - tributaries Z 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. 2b7. 2c.
Wetland impact 2d. 2e. 2f.

Mmb& - Typda 6f WPM Typt- 6f we a
Permanent (P) or
nd F8 LMM Type of jurisdiction
(CiS pg - 404, 10 Alga 6f in"pact
(if known)
Temporary DWQ - non404, other) (acres)
-
W1 [] P ? T Yes
F
1 El Corps
? No ?DWQ
W2 ? P ? T ? Yes ? Corps
? NO ? DWQ
W3 ? P ? T ? Yes ? Corps
? No ? DWQ
W4 ? P ? T ? Yes ? Corps
? No ? DWQ
W5 ? P ? T ? Yes ? Corps
? No ? DWQ
W6 ? P ? T ? Yes ? Corps
? No ? DWQ
2g. Total wetland impacts
2h. Comments:
3. Stream Impacts
If there are perennial or intermittent stream impacts (including temporary impacts) proposed on the site, then complete this
question for all stream sites impacted.
3a. 3b. 3c.
Stream impact Type of impact Stream name
number - 3d.
Perennial 3e. 3f. 3g.
Type of jurisdiction Average Impact

P
a
or
t (P
e (PER) or
intermittent (Corps - 404, 10 stream length
Tem
n
a
T
p ry ()
(INT)? DWQ - non-404, width (linear
other) (feet) feet)
S1 ®P ? T Stream stabilization UT to Neuse ® PER ® Corps 11
5
Rock/boulder toe River ? INT .
® DWQ bankfull 105
S2 ® P F-1 T Stream stabilization UT to Neuse ® PER ® Corps
11
5
vegetated soil lifts River E] !NT .
I,"®WZ q bankfull 35
S3 ®P ? T Stream stabilization UT to Neuse PER ®Corps 11
5
regrading side slopes River ? INT .
® DWQ bankfull 60
S4 ? P ? T ? PER ? Corps
? INT ? DWQ
S5 ? P 0 T ? PER ? Corps
? INT ? DWQ
S6 ? P ? T ? PER ? Corps
? INT ? DWQ
3h. Total stream and tributary impacts
200

r3i
.Comments: The stream impacts shown above are a linear distance along the undercut banks on one side of the stream
hat will be stabilized. The impacts will stabilize the b
k
i
an
s w
th a combination of rock material to bankfull, bank slope
improvements, and the establishment of woody vegetation for long term stabilization
The stream im
act n
b

on plan sheet 3. .
p
um
ers are located
Page 6 of 12
PCN Form - Version 1.3 December 10, 2008 Version
4. Open Water Impacts
If there are proposed impacts to lakes, ponds, estuaries, tributaries, sounds, the Atlantic Ocean, or any other open water of
the U.S. then individually list all open water impacts below.
4a.
Open water
impact number
- Permanent
(P) or
T enl' Ura y T . 4b.
Name of waterbody
(if applicable) 4c.

Type of impact 4d.

Waterbody type 4e.

Area of impact (acres)
01 ?P?T
02 ?P?T
03 ?P?T
04 ?P?T
4E Total open water impacts
4g. Comments:
5. Pond or Lake Construction
If and or lake construction proposed, then complete the chart below.
5a.

Pond ID
number 5b.

Prnpnged ;,,se or purpose of
d 5c.
Wetland Impacts (acres) 5d.
Stream Impacts (feet) 5e.
Upland
(acres)
pon Flooded Filled Excavated Flooded Filled Excavated Flooded
P1
P2
5E Total
5g. Comments:
5h. Is a dam high hazard permit required?
? Yes ? No If yes, permit ID no:
5i. Expected pond surface area (acres):
5j. Size of pond watershed (acres):
5k. Method of construction:
Page 7 of 12
PCN Form - Version 1.3 December 10, 2008 Version
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 an impacts require mitigation, then you MUST fill out Section D of this form.
6a.
Neuse ? Tar-Pamlico ? Other:
Project is in which protected basin? ? Catawba ? Randleman
6b. 6c. 6d. 6e. 6f. 6g.
R1 iffcr imr»r-t
v
number - Reason for
I Buffer Zone 1 impact Zone 2 impact
Permanent (P) impact Stream name mitigation (square feet) (square feet)
or Temporary required?
T
Stream
B1 ? P ®T stabilization-
access for UT to Neuse River ® Nos 720 0
constrution
B2 ? P ®T Construction
access UT to Neuse River ® Nos 200 300
63 ?P?T ?Yes
? No
6h. Total buffer impacts
6i. Comments: The buffer impacts have been listed in two catagodes. The impacts in B1 are located in the natual wooded
area on the project site. These impacts will be temporary for construction access to construct the repairs. The disturbed area
will be seeded with native herbaceous material, and augmented with woody vegetation upon completion of constrution. The
woody vegetation will be limited to shrub species within the sanitary sewer easement. The impacts in B2 are located both in
zones 1 and 2 that are currently in lawn. The temporary impacts due to construction access involve disturbance to the existing
lawn. The lawn will be re-seeded with grass to match the existing lawn. The buffer impact numbers are shown on sheet 5 of
the plans.
D. Impact Justification and Mitigation
1. Avoidance and Minimization
la. Specifically describe measures taken to avoid or minimize the proposed impacts in designing project.
This project is necessary to stabilize the stream channel and to eliminate the sediment deposition currently occuring due to the
erosion of the stream channel. The minimization of the project has limited the repairs to the areas of the stream banks that
are cur rentiy severiy eroding. The buffer impacts will minimize existing tree removal for the repairs and access for
construction.
1b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques.
The proposed construction will minimize proposed impacts by performing all construction from the top of the stream bank. In
addition, construction equipment will cross the stream only at the temporary stream crossing. The proposed structural
measures include rock for stability at the stream toe and vegetation to re-establish root systems on the stream bank for long
term stabilization.
2. Compensatory Mitigation for Impacts to Waters of the U.S. or Waters of the State
2a. Does the project require Compensatory Mitigation for ? Yes ® No
impacts to Waters of the U.S. or Waters of the State?
2b. If yes, mitigation is required by (check all that apply): ? DWQ ? Corps
? Mitigation bank
2c. If yes, which mitigation option will be used for this project? ? Payment to in-lieu fee program
? Permittee Responsible Mitigation
Page 8 of 12
PCN Form - Version 1.3 December 10, 2008 Version
3. Complete if Using a Mitigation Bank
3a. Name of Mitigation Bank:
3b. Credits Purchased (attach receipt and letter) Type Quantity
3c. Comments:
4. Complete if Making a Payment to In-lieu Fee Program
4a. Approval letter from in-lieu fee program is attached. ? Yes
4b. Stream mitigation requested: linear feet
4c. If using stream mitigation, stream temperature: ? warm ? cool ?cold
4d. Buffer mitigation requested (DWQ only): square feet
4e. Riparian wetland mitigation requested: acres
4f. Non-riparian wetland mitigation requested: acres
4g. Coastal (tidal) wetland mitigation requested: acres
4h. Comments:
6. Complete if Using a Permittee Responsible Mitigation Plan
5a. If using a permittee responsible mitigation plan, provide a description of the proposed mitigation plan.
6. Buffer Mitigation (State Regulated Riparian Buffer Rules) - required by DWQ
6a. Will the project result in an impact within a protected riparian buffer that requires
buffer mitigation? ? Yes ® No
6b. If yes, then identify the square feet of impact to each zone of the riparian buffer that requires mitigation. Calculate the
amount of mitigation required.

zone, 6c.
Reason for impact 6d.
Total impact
(square feet)
Multiplier 6e.
Required mitigation
(square feet)
Zone 1 3 (2 for Catawba)
Zone 2 1.5
6f. Total buffer mitigation required:
6g. If buffer mitigation is required, discuss what type of mitigation is proposed (e.g., payment to private mitigation bank,
permittee responsible riparian buffer restoration, payment into an approved in-lieu fee fund).
6h. Comments:
Page 9 of 12
PCN Form - Version 1.3 December 10, 2008 Version
E. Stormwater Management and Diffuse Flow Plan (required by DWQ)
1. Diffuse Flow Plan
1a. Does the project include or is it adjacent to protected riparian buffers identified
within one of the NC Riparian Buffer Protection Rules? ®Yes ? No
AL "Yes,
then is a diffuse flow plan included? If no, explain why.
Comments: The project does not involve any development upstream within the
floodplain or terraces of the stream which w
ld
?Yes No
ou
require diffuse flow. The project
only involves stream stabilization.
2. Stormwater Management Plan
2a. What is the overall percent imperviousness of this project?
0%
2b. Does this project require a Stormwater Management Plan?
? Yes No
2c. If this project DOES NOT require a Stormwater Management Plan, explain why: There are no building improvements
associated with this project and therefore there is no alteration of the impervious area. The project only involves
stabilization of an existing stream.
2d. If this project DOES require a Stormwater Management Plan, then provide a brief, narrative description of the plan:
2e. Who will be responsible for the review of the Stormwater Management Plan?
3. Certified Local Government Stormwater Review
3a. In which local government's jurisdiction is this project?
3b. Which of the following locally-implemented stormwater management programs
apply (check all that apply):
3c. Has the approved Stormwater Management Plan with proof of approval been
attached?
4. DWQ Stormwater Program Review
? Certified Local Government
? DWQ Stormwater Program
? DWQ 401 Unit
City of Raleigh
? Phase II
® NSW
? USMP
? Water Supply Watershed
? Other:
?Yes ?No
? Coastal counties
4a. Which of the following state-implemented stormwater management programs apply ? HQW
(check all that apply): ? ORW
? Session Law 2006-246
? Other:
4b. Has the approved Stormwater Management Plan with proof of approval been
attached?
? Yes ? No
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 10 of 12
PCN Form - Version 1.3 December 10, 2008 Version
E. Supplementary Information
1. Environmental Documentation (DWQ Requirement)
la. Does the project involve an expenditure of public (federal/state/local) funds or the
f ® Yes
? No
use o
public (federal/state) land?
1b. 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 ® No
(North Carolina) Environmental Policy Act (NEPA/SEPA)? I
1c. If you answered "yes" to the above, has the document review been finalized by the
State Clearing House? (If so, attach a copy of the NEPA or SEPA final approval
letter.) ? Yes ? No
Comments:
2. Violations (DWQ Requirement)
2a. Is the site in violation of DWQ Wetland Rules (15A NCAC 2H .0500), Isolated
Wetland Rules (15A NCAC 2H .1300), DWQ Surface Water or Wetland Standards, ? Yes ® No
or Riparian Buffer Rules (15A NCAC 2B .0200)?
21, . Is this an after tthe-f f pe mit application? ? Yes No
2c. If you answered "yes" to one or both of the above questions, provide an explanation of the violation(s):
3. Cumulative Impacts (DWQ Requirement)
3a. Will this project (based on past and reasonably anticipated future impacts) result in
additional development, which could impact nearby downstream water quality? 17 Yes Z No
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.
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.
n/a
Page 11 of 12
PCN Form - Version 1.3 December 10, 2008 Version
5. Endangered Species and Designated Critical Habitat (Corps Requirement)
5a. Will this project occur in or near an area with federally protected species or
h
bit
? ® El Yes N

a
at o
5b. Have you checked with the USFWS concerning Endangered Species Act
i
t
?
? Yes No
mpac
s
5c. If yes, indicate the USFWS Field Office you have contacted. ? Raleigh
? Asheville
5d. What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical
Habitat?
No endangered species of designated critical habitat have been found within the project area.
6. Essential Fish Habitat (Corps Requirement)
6a. Will this project occur in or near an area designated as essential fish habitat? ? Yes ? No
6b. What data sources did you use to determine whether your site would impact Essential Fish Habitat?
7. Historic or Prehistoric Cultural Resources (Corps Requirement)
7a. Will this project occur in or near an area that the state, federal or tribal
governments have designated as having historic or cultural preservation
status (e.g., National Historic Trust designation or properties significant in
? Yes No
North Carolina history and archaeology)?
7b. What data sources did you use to determine whether your site would impact historic or archeological resources?
The NC Historic Preservation Office website (www.hpo.dcr.state.nc.us) was searched and no sites were listed for this
property. In addition, no architectural structures or archaeological artifacts were noted during preliminary surveys at the
site.
8. Flood Zone Designation (Corps Requirement)
8a. Will this project occur in a FEMA-designated 100-year floodplain? ? Yes ® No
8b. If yes, explain how project meets FEMA requirements:
8c. What source(s) did you use to make the floodplain determination? NC Floodmaps site (www.ncfloodmaps.com) was
searched for FEMA floodplain limits.

Car] R, Dawson, Jr, PE ?
A
Applicant/Agent's Printed Name Applicant/Agent' ignature Date
(Agent's signature is valid only if an authorizatio 1 tte o the applicant
is provided.) C2
?01AWI/
Page 12 of 12
PCN Form - Version 1.3 December 10, 2008 Version
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VEGETATED GEOGRID DETAIL
SCALE: NOT TO SCALE

10605 SILVERWOOD CREEK
DETAILS
CITY OF RALEIGH,NORTH CAROLINA
JULY 9. 2010
WARD CONSULTING ENGINEERS, PC
8388 Six Forks Rd. Suite 104 919 870-0528
Raleigh, NC 27815-5083 FAX (919; 870-5359
NN
NOTE, SEE SPECIFICATION FOR INSTALLATION
INSTRUCTIONS SHOWN IN THESE FIGURES.
VEGETATED GEOGRID INSTALATION
SCALE: NOT TO SCALE

`?tiwatie
10605 SILVERWOOD CREEK
DETAILS
CITY OF RALEIGH,NORTH CAROLINA
WARD CONSULTING ENGINEERS, PC
8388 Six Forks Rd. Suite 104 [phone]
Raleigh. NC 27815-5083 FAX [phone]
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SCALE: NOT TO SCALE

10605 SILVERWOOD CREEK
DETAILS
CITY OF RALEIGH,NORTH CAROLINA
WARD CONSULTING ENGINEERS, PC
8888 Six Forks Rd. Suite 104 919 870-0526
Raleigh. NC 27615-5083 FAX (919; 870-5359
PUMP ZONE
E
BASE FLOW
NOTE: 1. WORK AREA TO BE STABILIZED AT THE END OF EACH WORK DAY.
2 ROCK SILT SCREENS REQUIRED FOR PUMP
AROUND OPERATIONS ARE CONSIDERED INCIDENTAL TO PUMPING.
3. STABLE OUTLET TO CONSIST OF ROCK PLACED IN CHANNEL
FOR ENERGY DISSIPATION AND 4V
ELBOW INSTALLATION AT THE END OF THE PIPING SO THAT
THE WATER DISCHARGES VERTICALLY UP IN THE AIR. THE OUTLET WILL
BE APPROVED BY THE DESIGNER PRIOR TO, PUKING.
TYPICAL PUMP AROUND OPERATION
SCALE: NOT TO SCALE
Aw I 10605 SILVERWOOD CREEK
DETAILS
CITY OF RALEIGH,NORTH CAROLINA
WARD CONSULTING ENGINEERS, PC
8368 Six Forks Rd. Suite 104 [phone]
Raleigh, NC 27615-5083 FAX [phone]

PLANTING
SEEDLING / LINER
HEALING IN
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DETAILS
PLANTING NOTES]
Fr y
REFORESTATION DETAIL
SCALE: NOT TO SCALE
10605 SILVERWOOD CREEK
DETAILS
CITY OF RALEIGH,NORTH CAROLINA
DATE: JULY 9.2010
?iwatie` I WARD CONSULTING ENGINEERS, PC
8388 Six Forks Rd. Suite 104 [phone]
Raleigh, NC 27815-5083 FAX [phone]
1/2 DIA. OF PIPE OR 12"
VMICHEVER IS GREATER
FILTER FABRIO-% _.
38' PIPE
COARSE AGGREGA
;ARTH FILL COVERED BY
LARGE ANGULAR ROCK
:ILL COVERED BY LARGE
R ROCK
NOTES:
1. CONTRACTOR MAY SUBSTITUTE
THE USE OF BRIDGE MATS TO
SPAN THE CHANNEL FOR THE
TEMPORARY CROSSING INSTEAD
OF CULVERT CROSSING UPON
APPROVAL BY THE ENGINEER.
ESSjn'•,. 9
x*` 133441f?f
tl ? ? ? Atl
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ARSE AGGREGATE
DEEP
EL&
TEMPORARY STREAM CROSSING
SCALE: NOT TO SCALE

10605 SILVERWOOD CREEK
DETAILS
CITY OF RALEIGH,NORTH CAROLINA
Y 9, 2010
WARD CONSULTING ENGINEERS, PC
8368 Six Forks Rd. Suite 104 [phone]
Raleigh, NC 27615-5083 FAIL [phone]
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Project: Silverwood XS 1 Location:
Station: 0+74 Benchmark description:
Date: USGS Grid Coordinates
Photo Reference Location: North East
Permanent Benchmark Elevation: Permanent Benchmark Location:
Blue cells are Instructions and notes. Please read them. Cross Section taken from left tc
Gray cells are outputs and should be left alone.
Yellow cells are for data Input and manipulation If you need additional sheets to
Instrument 11 Fore-Sight Height J: ." a!" j ull right' and "bankfull left" MUST he
n n. a...o ..a w...., yaw areas au.aaw aar
Station BS HI FS Elevation rk. "TOBL", "TOBR", 'TOE L" and TOE R" are Left End Station Right End
Feet recommended. Station
Feet Feet Feet Feet Feet
Purple rows
"flow row•
0 are for additi onal data. Sta rt station 0+00 at the first dlNonal data needed if elevation is less than
bankfull or 2 x benkfull.
92.51 X1 palate value
2.07 90.82 _
5.37 90.57 Bankfull Left - -
7.58 90.02 XITOBL 5.6110909 -
8.71 88.51 X1TOEL -
11.55 88.23 X1 _ _
13.17 87.93 X1 TW _ _
15.11 88.64 X1 _ _
16.71 88.97 XITOER - _
19.4 90.45 Bankfull Right - _
19.4 90.45 XITOBR -
22.48 90.97 X1 - 19.755385`
32.33 90.58 X1 _ _
47.81 90.72 X1 FENCE - _

Pull down orange if more rows needed. - -
These numbers are taken from the raw data table. There Is no need to change these cells
TW Bankfull TOB
Left Right Left Right
Station Elevation Station Elevation Station Elevation Station Elevation Station Elevation
13.17 87.93 5.37 90.57 " 19.4 90.45 7.58 - 90.02 19.4 90.45
You can change the yellow cells below. This Is where you can adjust the stations or elevations of the parameters below. The units are+f
feet of offset. The cells can be left blank if you do not wish to make changes.
TW Bankfull TOB
Left Ri ht Left Ri ht
Station Elevation Station Elevation Station Elevation Station Elevation Station Elevation
0 0 0 0 0 0 0 0 0 0
These are parameters that are used for morphology calculations, after an ad ustments below. There is no need to change these cells.
TW Bankfull TOB
Left Ri ht Left Ri ht
Station Elevation Station Elevation Station Elevation Station Elevation Station Elevation
13.17 87.93 5.37 90.57 19.41 ! ' 90.45 - 7.581 , 90.02 194 90.45
Average Bankfull Elevation ft 90.51
Bankfull Width ft 14.14429
Bankfull Area 22.32027
Bankfull Wetted Perimeter ft 5.317
Bankfull Hydraulic Radius ft 1.45695
LowBank Height ft Error, data needed if red

Stream Morphology
Wbkf = 14:14429
Abkf = 22.32027
dbkf = `1.578041-
W/D = 8.96
dmbkf = 2.58
Wfpa = :- #NUM!
ER = . #NUM!
LBH = 2.09
LBH/dma ,0:810078
D50 =
Qbkf =
DA =
Slope =
Sinuosi =
f red, cross section does not reach
unkfull elevation, add data.
0
0
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(?aaJ) UOIIBA013
Project: Silverwood Section #2 Location:
Station: 1+24 Benchmark description:
Date:
Photo Reference Location:
Permanent Benchmark Elevation: Permanent Benchmark Location:
Blue calls are Instructions and notes. Please read them.
Qrsy calls are outputs and should be left alone.
Station N BS
Height of
Instrument
Feet I Feet I Feet I Feet I Feet
de rows are for additional data. Start station 0+00 at the first
nr row.
0
1.37
2.51
5.43
7.57
10.51
11.8
14.38
16.06
16.71
17.27
18.38
19.3
21.47
27.54
, "Bankfull right" and "bankfull left" MUST be
sal verbatim In this column for the sheet to
"TOBV, "TOBR", "TOE V and TOE Ware
at data needed If elevation is Was than
or 2 x bankfull.
89.42 X2
87.69 X2
87.48
87.05 Bankfull Left
86.55 X2
85.33 X2
84.77 X2 TOEL
84.78 X2 TW
84.83 X2
85.13 X2 TOER
85.98 X2
86.32 X2
87.46 X2
88.85 X2 TOBR
89.52 X2
89.57 X2
I I I_ I 1 I Pull down oranoe If more rows needed.
100.00
98.00
c= nn
These numbers are taken from the raw data table. There is no need to change these cells
TW Bankfull TOB
Left Right Left Right
Station Elevation Station Elevation Station Elevation Station Elevation Station Elevation
11.8 84.78 5.43 87.05 0 0 0 0 19.3 88.85
You can change the yellow cells below. This is where you can adjust the stations or elevations of the parameters below. The units are
foe of offset The cells can be left blank If you do not wish to make changes.
TW Bankfull TOB

Station Elevation Left
Station Elevation Right
Station Elevation Left
Station Elevation Ri
Station ght
Elevation
0 0 0 0.1 0 0 0 0 0
These are parameters that are used for morphology calculations, after an ad ustmants below. There is no need to change these cells.
TW Bankfull TOB
Left Ri ht Left Ri ht
Station Elevation Station Elevation Station Elevation Station Elevation Station Elevation
11.8 84.78 5.43 87.15 0 ' 0 0 0 19.3 88.85
very a Bankfull Elevation ft 87.15
Bankfull Width ft 13.32723
Bankfull Area 22.51311
Bankfull Wetted Perimeter ft
Bankfull Hydraulic Radius ft -14:88763
1.502046
Low Bank Height ft -84.78
Error, data needed If red
Stream Morphology
Wbkf = 13.32723
Abkf = 22 51211
dbkf = 1.689182
W/D =
'
7.859.
dmbkf =
Wfpa =
ER = 2.38' -'

0
LBH = -84.78 -
LBH/dmax -35.6218
D50 =
Qbkf =
DA =
Slope =
Sinuosity-- L
I red, cross section does not reach
mnkfull elevation, add data.
Point Station Offset Elevation Description
Project: Silverwood XS 3 Location:
Station: 1+55 Benchmark description:
Date:
Photo Reference Location:
Permanent Benchmark Elevation: Permanent Benchmark Location:
Blue cells are Instructions and notes. please read them.
Gray Cells we outputs and should be left alone.
Yellow cells are for data Input and manioulatfon
Height of -
Back-Sight Instrument Fore-SI M Height , "Bankfull right" and "bankfull fair MUST be
red verbatim in this column for the sheet to
Station BS HI FS • "TORV, "TOBR", "Toe I." and Tote R" are
mmended.
Feet Feet Feel Feet
Purple rows are for additional data. Start station 0+0 ttional data needed H elevation Is Was then
low row. full or 2 x bankfull.
0 89.04 X3
1.01 87.93 X3
1.8 9 87.26 Ban kfull Left
1.87 84.54 X3 TOEL
2.92 84.36 X3
5.33 84.37 TW
5.45 84.38 X3 TW
8.19 84.68 X3
9.93 84.8 X3 TOER
9.92 86.34 X3
10.87 87.08 X3
11.91 87.99 X3
14.68 88.42 X3
17:68 88.21 X3
22.44 87.41 X3
These numbers are taken from the raw data table. There is no need to change these cells
TW Bankfull TOB
Left Right Left Right
Station Elevation Station Elevation Station Elevation Station Elevation Station Elevation
10:78 168.75 1.89 87.26 0 0 0 0 0 0
ou can change the yellow cells below. This Is where you can adjust the stations or elevations of the parameters below. The units are
/- feet of offset. The cells can be left blank If you do not wish to make changes.
TW Bankfull TOB
Left Ri ht Left Ri ht
Station Elevation Station Elevation Station Elevation Station Elevation Station Elevation
0 0 0 0.05 01 1 0 0 0 0
These are parameters that are used for morphology calculations after an ad ustments below. There is no need to change these cells.
TW Bankfull TOB
Left Right Left Ri ht
Station Elevation Station Elevation Station Elevation Station Elevation Station Elevation
10.78168.75 1.891 - 87.31 0 0 0 0 0 0
Stream Morphology
2.491
3.7,
Error, data needed If red
Avers a Bankfull Elevation ft 87.31
Bankfull Width ft 9.308529
Bankfull Area Me) 23.18773
Bankfull Wetted Perimeter ft 13.96015
Bankfull Hydraulic Radius ft 1.660995
Low Bank Height ft 168.75
red, cross section does not reach
snkfull elevation, add data.
i .

4
Project: Silverwood XS 4 Location:
Station: 2+14 Benchmark description:
Date:
Photo Reference Location:
Permanent Benchmark Elevation: Permanent Benchmark Location:
Blue coils are Instructions and notes. Please read them.
Gray cells are outputs and should be left alone.
Yellow cells are for data Input and manipulation
:k-Sight Instrument 11 Fore-Sight Hei ht "Bankfull right" and "bankfull left" MUST be
Bred verbatim In this column for the sheet to
BS HI FS EI@VatlOn rk. "TOBL",'TOBR", 'TOE L" and TOE R" are
Feet Feet Feet Feet Feet
de rows are for additional data. Start station 0+00 at the first dlfional data needed If elevation is less than
W row• bankfull or 2 x bankfull.
0 86.8
10.33 86.77 X4
12.92 86.56
14.52 86.12 Bankfull Left
15.3 83.7 X4 TOEL
17.52 83.89 X4
22.74 84.09 X4 TOER
24.05 84.97 X4 TOBR
24.8 85.3 X4
25.93 85.75 X4
28.18 1 1 86.34
29.92 86.62
32.12 88.34 X4
Ii 1 1 1 1 1 Pull down orange If more rows needed. 1

ese numbers are taken from the raw date table. There is no need to change these cells
TW Bankfuli TOB
Left Right Left Right
Station Elevation Station Elevation Station Elevation Station Elevation Station Elevation
14.52 86.12 0 0 0 ` 0 24.05 84.97
ou can change the yellow cells below. This Is where you can adjust the stations or elevations of the parameters below. The units are
of offset. The cells can be left blank If you do not wish to make changes.
-lye Bankfull TOB

Station Elevation
0 0 Left
Station Elevation
01
0.1 Right
Station Elevation
0 0
1 Left
Station Elevation
0 0 Ri
Station
0 IN
Elevation
0
These are parameters that are used for morphology calculations, after an a ustmants below. There is no need to change these cells.
TW Bankfulf TOB
Left
Station Elevation Station Elevation
14:52 86.22 Right
Station Elevation
0 0 Left
Station Elevation
0 0 Ri
Station
24.05 ht
Elevation
84.97
Stream Morphology
Abkf = 22.24111
dbkf = 1.68463
W/D = 7.84
Error, data needed if red dmbkf = 2.52
very a Bankfull Elevation ft 86:22
ankfull Width ft 13.20237
ankfull Area
[ 22.24111
ankfull Wetted Perimeter ft 15.5567
Bankfull
H draulic Radius ft 1.42968
ow Bank Height ft 0
IL LBH =11 0 11
red, cross section does not reach
mkfull elevation, add data.

c
0 __
75
N Y
n G m O
U m N M
O
O
O
M
O
O
L6
N
O
O
O
N
O
O
L6
r
O
O
O
O
O
L6
O
I
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O O O O O O O O O O O O O O O
O O O O O O O O O O O O O O O O O
O O O O O
O Oi o0 f? Cfl d cM CV r- O of 00 I. c0 Sri 4 cM
O O O O O O O O O O O O O O 00 O O O
r
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Project: Silverwood XS 5
Station: 2+83
Date:
Photo Reference Location.
Location:
Benchmark description:
Blue cells are Instructions and notes. Please read them.
Gray calls are outputs and should be left alone.
Yellow cells are for data input and manipulation
Station SS 11 HI 11 FS
Feet Feet Feet Feet Feet
ile rows are for additional data. Start station 0+00 at the first
W row.
, "Bankfull right" and "bankfull left" MUST be
ad verbatim In this column for the sheet to
"TOBV, 'TOBR", 'TOE V and TOE R" are
al data needed If elevation Is less than
or 2 x bankfull.
U 87.62 X5
2.83 86.94 X5
7.13 86.66 X5
8.82 85.92 X5
9.81 85.43 Bankfull Left
10.46 84.02
13.56 83.77 X5
14.16 82.87 X5 TOEL
16.04 82.73 X5 TW
19.5 83.05 X5 TOER
20.2 87.54 X5 TOER
21.85 88.1 X5
26.57 87.88 X5
34.16 87.52 X5
11 i 1 I 1 Pull dorm orange if more rows needed. -?

base numbers are taken from the raw data table. There is no need to change these cells
TW Bankfull TOB
Left Right Left Right
Station Elevation Station Elevation Station Elevation Station
I I
Elevation Station Elevation
16:04 ' 82.73 9.811 - 85.43 p p p p 0 0
You can change the yellow cells below. This Is where you can adjust the stations or elevations of the parameters below
The units are
.
rest
of offset. The cells can be left blank if you do not wish to make changes.
TW Bankfull TOB

Station Elevation Left
Station Elevation Ri
Station ht
Elevation Left
Station Elevation Ri
Station ht
Elevati

0 0
0 on
0.15 0 0 0 0 0

hese are parameters that are used for morphology calculations, after an ad ustments below. There is no need to chan a these cells.
TW Bankfull TOB

Station Elevation Left
Station ation qR,* ht
StatiElevation Left
Station Elevation Ri ht
Station Elevation
16.04 82.73 9.81 85.58 0 0 0 0 0
Stream Morphology
dbkf = 2.1521
W/D = 4.83
Error, data needed If red dmbkf = 2.85
red, cross section does not reach
mkfull elevation, add data.
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0
L6
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0
0
N
N
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O
O
L6
O
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r
O
O
L6
O

O
O
O
O
O
O

O
O

O
O

O
W

O
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O
Lo

O
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