20081830 Ver 1_401 Application_20081208

? ? ? Kimley-Horn
and Associates, Inc.
December 17, 2008
Mr. James Shern
U.S. Army Corps of Engineers
Raleigh Regulatory Field Office
3331 Heritage Trade Drive, Suite 105
Wake Forest, North Carolina 27587
Ms. Cyndi Karoly
NC Division of Water Quality
2321 Crabtree Boulevard
Raleigh, North Carolina 27602
Re: Taylor Street Extension, Town of Wake Forest
Nationwide Permit #14 Application Submittal
Wake County, North Carolina
Dear Mr. Sherri and Ms. Karoly:
¦
P.O. Box 33068
Raleigh, North Carolina
27636.3068
2 0 0 8 1 8 30
On behalf of the Town of Wake Forest, Kimley-Horn and Associates, Inc. is
submitting the enclosed Preconstruction Notification Application for
authorization to construct the above reference project under Nationwide Permit
Number 14 and General Water Quality Certification Number 3704.
The proposed project includes the construction of the Taylor Street extension,
located in Wake Forest, Wake County, North Carolina. The new roadway will
connect existing Taylor Street on the south to Wait Avenue (NC 98 Business).
The extension will also provide a direct route from the new Town of Wake
Forest Town Hall and the Town of Wake Forest Police Department to a major
road, Wait Avenue. The roadway extension will relieve some of the traffic
accessing the Town Hall site from the adjacent Town streets and provide a safer
environment for the downtown street network and development. Construction
of the roadway will require a single crossing of Spring Branch, and result in
permanent impacts to 145 linear feet of stream channel and 13,272 square feet
of Neuse River Riparian Buffer. No mitigation is proposed due to the fact that
impacts associated with the project are below mitigation thresholds.
The following information is included with this submittal:
• Agent Authorization Form
• Preconstruction Notification Form
• Permit Maps and Figures
• Check for $240.001
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TEL [phone]
FAX [phone]
? ? ? Kimley-Horn
and Associates, Inc.
If there is any additional information you need to assist in the processing of this
application, please do not hesitate to contact me at [phone].
Very truly yours,
KIMLEY-HORN AND ASSOCIATES, INC.
(T-Ll IA49-L-^?
Jeffrey W. Moore, P.E.
Enclosures
cc: Mr. Roe O'Donnell, P.E., Town of Wake Forest
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oT_ DEC 1 2008
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DENR - wATER QOALI N
e"iM14% AND STORMWATER BRANCH
Office Use Only:
Corps action ID no.
DWQ project no.
Form Version 1.0 November 2008
Pre-Construction Notification (PCN) Form
A. Applicant Information
1. Processing
1 a. Type(s) of approval sought from the
Corps:
®Section 404 Permit El Section 10 Permit
1 b. Specify Nationwide Permit (NWP) number: 14 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: Taylor Street Extension
2b. County: Wake
2c. Nearest municipality / town: Town of Wake Forest
2d. Subdivision name: Not applicable
2e. NCDOT only, T.I.P. or state
project no: Not applicable
3. Owner Information
3a. Name on Recorded Deed: Not applicable since this is a roadway project through several private parcels
3b. Deed Book and Page No. Not applicable since this is a roadway project through several private parcels
3c. Responsible Party (for LLC if
applicable): Mr. Roe O'Donnell, P.E., Deputy Town Manager
3d. Street address: 401 Elm Avenue
3e. City, state, zip: Wake Forest, NC, 27587
3f. Telephone no.: [phone]
3g. Fax no.: [phone]
3h. Email address: [e-mail]
Page 1 of 11
PCN Form - Version 1.0 November 2008 Version
Section A. Applicant Information, continued
4. Applicant Information (if different from owner)
4a. Applicant is: ? Agent ? Other, specify:
4b. Name:
4c. Business name
(if applicable):
4d. Street address:
4e. City, state, zip:
4f. Telephone no.:
4g. Fax no.:
4h. Email address:
5. Agent/Consultant Information (if applicable)
5a. Name: Mr. Jeffrey W. Moore, P.E.
5b. Business name
(if applicable): Kimley-Horn and Associates, Inc.
5c. Street address: 3001 Weston Parkway
5d. City, state, zip: Cary, NC 27513
5e. Telephone no.: [phone]
5f. Fax no.: [phone]
5g. Email address: [e-mail]
Page 2 of 11
PCN Form - November 2008 Version
B. Project Information and Prior Project History
1. Property Identification
1a. Property identification no. (tax PIN or parcel ID): Not applicable since this is a roadway project
1b. Site coordinates (in decimal degrees): 35.9774'N - 78.5074'W
1 c. Property size: Not applicable acres
2. Surface Waters
2a. Name of nearest body of water (stream, river, etc.) to Spring Branch (Trib to Smith Creek)
proposed project:
2b. Water Quality Classification of nearest receiving water: C; NSW
2c. River basin: Neuse River Basin
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 will connect two existing roads in downtown Wake Forest. The area immediately surrounding the crossing is
in unmaintained underbrush and maintained utility line rights-of-way. (See Figure 2)
3b. List the total estimated acreage of all existing wetlands on the property:
Based on field reconnaissance, no wetlands are located within the project area.
3c. List the total estimated linear feet of all existing streams (intermittent and perennial) on the property:
145 linear feet within the project footprint.
3d. Explain the purpose of the proposed project:
To construct a new roadway to connect existing Taylor Street on the south to Wait Avenue (NC 98 Business). The
extension will also provide a direct route from the new Town of Wake Forest Town Hall and the Town of Wake Forest
Police Department to a major road, Wait Avenue.
3e. Describe the overall project in detail, including the type of equipment to be used:
The project will construct a 8'x 6' reinforced concrete box culvert and associated riprap for streambank stabilization at the
culvert ends. The culvert will be buried 1 foot below the stream invert to allow aquatic life passage. The equipment used
will be that typically used during road construction, including excavators, dump trucks, graders, bull dozers, etc.
4. Jurisdictional Determinations
4a. Have jurisdictional wetland or stream determinations by the
Corps or State been requested or obtained for this property / ? Yes ® No ? Unknown
project (including all prior phases) in the past?
4b. If the Corps made the jurisdictional determination, what type
f d
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i
i
? Preliminary ? Final NONE
o
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erm
nat
on was made?
4c. If yes, who delineated the jurisdictional areas? Agency/Consultant Company:
Name (if known): Todd Tugwell Other: Kimley-Horn and Associates, Inc.
4d. If yes, list the dates of the Corps jurisdictional determinations or State determinations and attach documentation.
5. Project History
5a. Have permits or certifications been requested or obtained for ? Yes ® No ? Unknown
this project (including all prior phases) in the past?
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 3 of 11
PCN Form - Version 1.0 November 2008 Version
C. Proposed Impacts Inventory
1. Impacts Summary
1 a. Which sections were completed below for your project (check all that apply):
? Wetlands ® Streams - tributaries ® 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 jurisdiction
number - Type of Type of wetland Forested (Corps - 404, Area of impact (acres)
Permanent (P) or impact (if known) DWQ - non-404, other)
Temporary T
W1 ? P ? T ? Yes ? No ? Corps
? DWQ
W2 ? P ? T ? Yes ? No ? Corps
? DWQ
W3 ? P ? T ? Yes ? No ? Corps
? DWQ
W4 ? P ? T ? Yes ? No ? Corps
? DWQ
W5 ? P ? T ? Yes ? No ? Corps
? DWQ
W6 ? P ? T ? Yes ? No ? Corps
? 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. 3d. 3e. 3f.
Stream impact Type of Stream name Perennial (PER) or Average stream width (feet) Impact
number - impact intermittent (INT)? length
Permanent (P) or (linear feet)
Temporary (T)
S1 ® P ? T Culvert Spring Branch ® PER ? INT 6 145
S2 ?P?T ?PER ?INT
S3 ?P?T ?PER ?INT
S4 ? P ? T ? PER ? INT
S5 ? P ? T ? PER ? INT
S6 ?P?T ?PER ?INT
3g. Total stream and tributary impacts 145
3h. Comments: 8'x 6' RCBC Buried 1'
Page 4 of 11
PCN Form - Version 1.0 November 2008 Version
C. Proposed Impacts Inventory, continued
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 individual) list all o en water impacts below.
4a. 4b. 4c. 4d. 4e.
Open water Name of
impact number waterbody Type of impact Waterbody type Area of impact (acres)
- Permanent (if
(P) or applicable)
Temporary T
01 ?P?T
02 ?P?T
03 ?P?T
04 ?P?T
4f. Total open water impacts
4g. Comments:
Page 5 of 11
PCN Form - November 2008 Version
C. Proposed Impacts Inventory, continued
5. Pond or Lake Construction
If and or lake construction pro osed, then complete the chart below.
5a. 5b. 5c. 5d. 5e.
Wetland Impacts (acres) Stream Impacts (feet) Upland
Pond ID Proposed use or (acres)
number purpose of pond
Flooded Filled Excavated Flooded Filled Excavated Flooded
P1
P2
5f. 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:
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 ou 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.
Buffer impact
number - Reason Buffer Zone 1 impact (square Zone 2 impact
Permanent (P) for impact Stream name mitigation feet) (square feet)
or Temporary required?
T
61 ®P ? T Fill Spring Branch ? Yes ® No 8436 4836
B2 ?P?T ?Yes ?No
63 ? P ? T ? Yes ? No
6h. Total buffer impacts 8436 4836
6i. Comments: As part of the project, approximately 1,438 SF of buffer area will be restored. The area is currently a gravel
driveway, but will be replanted with native tree species following removal of the gravel driveway.
Page 6 of 11
PCN Form - November 2008 Version
D. Impact Justification and Mitigation
1. Avoidance and Minimization
1 a. Specifically describe measures taken to avoid or minimize the proposed impacts in designing project.
Precast concrete box culvert (to be buried 1') is proposed in order to minimize work and fill directly in the stream. The
vertical alignment (elevation of the proposed road) was lowered to the extent feasible to maintain a safe design for
motorist while minimizing impacts to the site.
1 b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques.
Temporary stream diversion, silt fence installation, and dewatering will be used during construction to minimize impacts to
the stream channel. A precast culvert will be installed to minimize construction time in stream. During culvert
construction, a temporary pipe will be used to divert the stream around work area which will minimize buffer impacts.
Also, 1,438 SF of the impacted buffer area will be restored with native tree species. A permanent bypass level spreader
will also be installed to diffuse proposed stormwater before it enters the buffer. Topographic constraints and the fixed
points where the road will connect to existing roads have limited the ability to further reduce and avoid impacts.
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 ® No
2b. If yes, mitigation is required by (check all that apply): ? DWQ ? Corps

2c.
If yes, which mitigation option will be used for this
project? ? Mitigation bank

? Payment to in-lieu fee program
? Permittee Responsible Mitigation
3. Complete if Using a Mitigation Bank
3a. Name of Mitigation Bank:
3b. Credits Purchased (attach receipt and letter) Type 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:
5. Complete if Using a Permittee Responsible Mitigation Plan
5a. If using a permittee responsible mitigation plan, provide a description of the proposed mitigation plan.
Page 7 of 11
PCN Form - Version 1.0 November 2008 Version
D. Impact Justification and Mitigation, continued
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 Reason for impact Total impact
(square feet) Multiplier Required mitigation
(square feet)
Zone 1 3 (2 for Catawba)
Zone 2 1.5
Total buffer mitigation required:
6c. 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).
6d. Comments: No buffer mitigation is required, however approximately 1,438 SF of buffer will be replanted with native tree
species in an effort to minimize impacts associated with the project.
Page 8 of 11
PCN Form - November 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 ® Yes ? No
within one of the NC Riparian Buffer Protection Rules?
1 b. If yes, then is a diffuse flow plan included? ® Yes ? No
2. Determination if the Project Requires a Stormwater Management Plan
2a. Does the project require a Non-404 Jurisdictional General Permit? ? Yes ® No
2b. Is the project subject to General Certification 3704 or 3705? ® Yes ? No
3. Determination of Stormwater Review Jurisdiction
3a. Is this project subject to any of the following state-implemented stormwater ? Coastal counties
management programs (check all that apply)? ? HQW
? ORW
If so, attach one copy of the approval letter from the DWQ and one copy of the ? Session Law 2006-246
approved stormwater management plan. ? Other:
3b. In which local government's jurisdiction is this project? Town of Wake Forest
3c. Is this local government certified to implement a state stormwater program? ® Yes ? No
If so, attach one copy of the approval letter from the local government and one copy Ho'aev.-, -+k-'s ;s A. Town
of the approved stormwater management plan (or one copy of the approved Psi«} _4 .'s assu,ne,J *f II
Stormwater management plan stamped as approved). be reviewed 6y pwo.
4. Information Required for DWQ 401 Unit Stormwater Review
4a. What is the overall percent imperviousness according to the most current site plan? Not applicable
4b. Does this project contain any areas that meet the criteria for "high density" per ? Yes ? No
General Certifications 3704 and 3705?
4c. If the site is over 24% impervious and/or contains high density areas, then provide a brief narrative description of the
stormwater management plan.
The project only includes a small section of roadway. The new impervious cover will be sent to a level spreader that will
flow into a restored buffer.
4d. Has a completed BMP Supplement Form with all required items been submitted ® Yes ? No
for each stormwater BMP?
Page 9 of 11
PCN Form - Version 1.0 November 2008 Version
F. Supplementary Information
1. Environmental Documentation (DWQ Requirement)
1 a. Does the project involve an expenditure of public (federal/state/local) funds or the ® Yes ? No
use of public (federal/state) land?
1 b. If you answered "yes" to the above, does the project require preparation of an
environmental document pursuant to the requirements of the National or State ? Yes ® No
(North Carolina) Environmental Policy Act (NEPA/SEPA)?
1c. If you answered "yes" to the above, has the document review been finalized by the
State Clearing House? (If so, attach a copy of the NEPA or SEPA final approval
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 26 .0200)?
2b. Is this an after-the-fact permit application? ? Yes ® No
2c. If you answered "yes" to one or both of the above questions, provide an explanation of the violation(s):
3. Cumulative Impacts (DWQ Requirement)
3a. Will this project (based on past and reasonably anticipated future impacts) result in ? Yes ® 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.
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.
Not applicable
Page 10 of 11
PCN Form - Version 1.0 November 2008 Version
F. Supplementary Information, continued
5. Endangered Species and Designated Critical Habitat (Corps Requirement)
5a. Will this project occur in or near an area with federally protected species or ? Yes ® No
habitat?
5b. Have you checked with the USFWS concerning Endangered Species Act ? Yes ® No
impacts?
El Raleigh
5c. If yes, indicate the USFWS Field Office you have contacted.
? Asheville
5d. What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical
Habitat?
North Carolina Natural Heritage Program database search, 12/15/2008.
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?
None - the project is in a central county that is not in the vicinty of EFH.
7. Historic or Prehistoric Cultural Resources (Corps Requirement)
7a. Will this project occur in or near an area that the state, federal or tribal
governments have designated as having historic or cultural preservation ? Yes ® No
status (e.g., National Historic Trust designation or properties significant in
North Carolina history and archaeology)?
7b. What data sources did you use to determine whether your site would impact historic or archeological resources?
None - the project will not disturb or affect existing structures and it is not anticipated that archeogical resources are
located within the project corridor due to existing fill and previous disturbances in the project vicinity.
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? FEMA Map Service Center, accessed 12/15/2008.
Jeffrey W. Moore 1IZ-11-08
Applicant/Agent's Printed Name pp cant/Agent's Signature
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Page 11 of 11
PCN Form - November 2008 Version
Letter of Authorization
Mr. Roe O'Donnell, P.E., with the Town of Wake Forest authorizes Kimley-
Horn and Associates, Inc. to act as our limited agent to coordinate with the U.S.
Army Corps of Engineers and North Carolina Division of Water Quality for the
preparation and submittal of jurisdictional determinations and 404/401 permits
applications associated with the Taylor Street Extension located Wake County,
North Carolina. Authorization will terminate on either final agency action or
upon written notification from either parties involved.
Company Name: Town of Wake Forest
Contact Name: Roe O'Donnell, P.E.
Client Address: 401 Elm Avenue
Wake Forest, NC 27587
Client Phone #: [phone]
Client Fax #: [phone]
Client Email: rodonnellA-wakeforestnc.gov
a 4A?
(Signature of Client)
2, OPRIII / 2-
Date
Title USGS Topographic Map (Wake Forest)
Taylor Street Extension
Project Wake Forest, North Carolina
Prepared For: Wake County
Town of Wake Forest Date Project Number Figure
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Taylor Street Extension
Project Wake Forest, North Carolina
Prepared For: Wake County
Town of Wake Forest Date Project Number Figure
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Title Wake County Soil Survey (1970)
Taylor Street Extension
Project Wake Forest, North Carolina
Prepared For: Wake County
Town of Wake Forest Date Project Number Figure
12/15/08 011311020 3
Prepared by Anna Rcusche EM" =a
STREAM AVG.
STREAM STREAM STREAM BUFFER
IMPACTS IMPACTS
WIDTH IMPACTS IMPACTS IMPACTS
(FT) (FT) (ACRES) (FT)
BZ 1: 8,436
IMPACT ONE 145 6 870 0.02
BZ 2: 4,836
BZ 1: 8,436
TOTAL 145 6 870 0.02
IMPACTS BZ 2: 4,836
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BUFFER IMPACTS
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ZONE 2. 4,836 SF
STREAM IMPACTS
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STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
LEVEL SPREADER, FILTER STRIP AND RESTORED RIPARIAN BUFFER SUPPLEMENT
This form must be completely filled out, printed and submitted.
DO NOT FORGET TO ATTACH THE REQUIRED ITEMS CHECKLIST AND ALL REQUIRED ITEMS (NEXT WORKSHEET)I
I. PROJECT INFORMATION
Project name Taylor Street Extension
Contact name Jeffery W. Moore, P.E.
Phone number [phone]
Date December 16, 2008
Drainage area number
II. DESIGN INFORMATION
For Level Spreaders Receiving Flow From a BMP
Type of BMP
Drawdown flow from the BMP cfs
For Level Spreaders Receiving Flow from the Drainage Area
Drainage area 65,340.00 ftz
Impervious surface area 26,100.00 ftz
Percent impervious 39.94 %
Rational C coefficient 0,90
Peak flow from the 1 in/hr storm 1.35 cfs
Time of concentration 5.00 min
Rainfall intensity, 10-yr storm 5.7 in/hr
Peak flow from the 10-yr storm 7.70 cfs
Where Does the Level Spreader Discharge ?
To a grassed bioretention cell? N (Y or N)
To a mulched bioretention cell? N (Y or N)
To a wetland? N (Y or N)
To a filter strip or riparian buffer? Y (Y or N) Please complete filter strip characterization below.
Other (specify)
Filter Strip or Riparian Buffer Characterization (if applicable)
Width of grass
Width of dense ground cover
Width of wooded vegetation
Total width
Elevation at downslope base of level lip
Elevation at top of bank of the receiving water
Slope (from level lip to to top of bank)
Are any draws present?
Level Spreader Design
Forebay surface area
Feet of level lip needed per cfs
Answer "Y" to one of the following:
Length based on the 1 in/hr storm?
Length based on the 10-yr storm?
Length based on the BMP discharge rate?
Design flow
Is a bypass device provided?
0.00 ft
55.00 ft
0.00 ft
55.00 ft
345.30 fmsl
344.00 fmsl
2.36 % OK
N (Y or N) OK
50.00 sq ft OK
13 ft/cfs
Y (Y or N)
N (Y or N)
N (Y or N)
1.50 cfs
Y (Y or N) OK
Form SW401-Level Spreader, Filter Strip, Restored Riparian Buffer-Rev.5 Parts I. and II. Design Summary, page 1 of 2
Length of the level lip
Are level spreaders in series?
Bypass Channel Design (if applicable)
Does the bypass discharge through a wetland?
Does the channel enter the stream at an angle?
Dimensions of the channel (see diagram below):
M
B
W
Y
Peak velocity in the channel during the 10-yr storm
Channel lining material

M
40.00 ft
N (Y or N)
N (Y or N)
Y (Y or N)
2.00 ft
2.00 ft
6.00 ft
1.00 ft
9.50 cfs
Class T Rip Rap
Y
B 1
Level spreader length OK.
1
M
14
Form SW401-Level Spreader, Filter Strip, Restored Riparian Buffer-Rev.5 Parts I. and II. Design Summary, page 2 of 2
IIL` REQUIRED ITEMS CHECKLIST
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Pagel Plan
Initials Sheet No.
JWM 4 1. Plans (1" - 50' or larger) of the entire site showing:
Design at ultimate build-out,
- Off-site drainage (if applicable),
- Delineated drainage basins (include Rational C coefficient per basin),
Forebay (if applicable),
- High flow bypass system,
Maintenance access,
- Proposed drainage easement and public right of way (ROW), and
Boundaries of drainage easement.
JWM 2-A, 4, EC-2 2. Plan details (1" = 30' or larger) for the level spreader showing:
Forebay (if applicable),
- High flow bypass system,
- One foot topo lines between the level lip and top of stream bank,
- Proposed drainage easement, and
- Design at ultimate build-out.
JWM 2-A 3. Section view of the level spreader (1" = 20' or larger) showing:
Underdrain system (if applicable),
Level lip,
Upslope channel, and
Downslope filter fabric.
JWM Planted 4. A date-stamped photograph of the filter strip that clearly shows the type of vegetation that is present.
JWM EC-1,2,3 5. A construction sequence that shows how the level spreader will be protected from sediment until the entire
drainage area is stabilized.
JWM ? 6. The supporting calculations.
JWM I'll,_ 7. A copy of the signed and notarized operation and maintenance (0&M) agreement.
JWM N IA 8. A copy of the deed restrictions (if required).
Form SW401-Level Spreader, Filter Strip, Restored Riparian Buffer-Rev.5 Part III, page 1 of 1
Permit Number:
(to be provided by DWQ)
Drainage Area Number:
Filter Strip, Restored Riparian Buffer and Level Spreader
Operation and Maintenance Agreement
I will keep a maintenance record on this BMP. This maintenance record will be kept in a
log in a known set location. Any deficient BMP elements noted in the inspection will be
corrected, repaired or replaced immediately. These deficiencies can affect the integrity
of structures, safety of the public, and the removal efficiency of the BMP.
Important maintenance procedures:
- Immediately after the filter strip is established, any newly planted vegetation
will be watered twice weekly if needed until the plants become established
(commonly six weeks).
- Once a year, the filter strip will be reseeded to maintain a dense growth of
vegetation
- Stable groundcover will be maintained in the drainage area to reduce the
sediment load to the vegetation
- Two to three times a year, grass filter strips will be mowed and the clippings
harvested to promote the growth of thick vegetation with optimum pollutant
removal efficiency. Turf grass should not be cut shorter than 3 to 5 inches and
may be allowed to grow as tall as 12 inches depending on aesthetic requirements
(NIPC,1993). Forested filter strips do not require this type of maintenance.
- Once a year, the soil will be aerated if necessary.
- Once a year, soil pH will be tested and lime will be added if necessary.
After the filter strip is established, it will be inspected quarterly and within 24 hours
after every storm event greater than 1.0 inch (or 1.5 inches if in a Coastal County).
Records of operation and maintenance will be kept in a known set location and will be
available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall
be repaired immediately.
BMP element: Potential problem: How I will remediate the problem:
The entire filter strip Trash/debris is present. Remove the trash/ debris.
system
The flow splitter device The flow sputter device is Unclog the conveyance and dispose
(if applicable) clogged. of ansediment off-site.
The flow sputter device is Make any necessary repairs or
damaged. replace if damage is too large for
repair.
Form SWU401-Level Spreader, Filter Strip, Restored Riparian Buffer O&M-Rev.3 Page 1 of 3
BMP element: Potential problem: How I will remediate the problem:
The swale and the level The swale is clogged with Remove the sediment and dispose
lip sediment of it off-site.
The level lip is cracked, Repair or replace lip.
settled, undercut, eroded or
otherwise damaged.
There is erosion around the Regrade the soil to create a berm
end of the level spreader that that is higher than the level lip, and
shows stormwater has then plant a ground cover and
bypassed it. water until it is established. Provide
lime and a one-time fertilizer
application.
Trees or shrubs have begun Remove them.
to grow on the swale or just
downslo of the level lip.
The bypass channel Areas of bare soil and/or Regrade the soil if necessary to
erosive gullies have formed. remove the gully, and then
reestablish proper erosion control.
Turf reinforcement is Study the site to see if a larger
damaged or ripap is rolling bypass channel is needed (enlarge if
downhill. necessary). After this, reestablish
the erosion control material.
The filter strip Grass is too short or too long Maintain grass at a height of
if applicable). approximately three to six inches.
Areas of bare soil and/or Regrade the soil if necessary to
erosive gullies have formed. remove the gully, and then plant a
ground cover and water until it is
established. Provide lime and a
one-time fertilizer application.
Sediment is building up on Remove the sediment and
the filter strip. restabilize the soil with vegetation if
necessary. Provide lime and a one-
time fertilizer application.
Plants are desiccated. Provide additional irrigation and
fertilizer as needed.
Plants are dead, diseased or Determine the source of the
dying. problem: soils, hydrology, disease,
etc. Remedy the problem and
replace plants. Provide a one-time
fertilizer application.
Nuisance vegetation is Remove vegetation by hand if
choking out desirable species. possible. If pesticide is used, do not
allow it to get into the receiving
water.
The receiving water Erosion or other signs of Contact the NC Division of Water
damage have occurred at the Quality local Regional Office, or the
outlet. 401 Oversight Unit at 919-733-1786.
Form SWU401-Level Spreader, Filter Strip, Restored Riparian Buffer O&M-Rev.3 Page 2 of 3
Permit Number:
(to be provided by DWQ)
I acknowledge and agree by my signature below that I am responsible for the
performance of the maintenance procedures listed above. I agree to notify DWQ of any
problems with the system or prior to any changes to the system or responsible party.
Project name: I P`i Lo?-i? "?E1?'i'?o
BMP drainage area number:
Print name: G1Z1(_ 1LF- 2-Av1 tkt) ?-' ?
Title:
Addri
Phone: 9H - s54--6 l Z Z
Signature: (®% "-
Date: 1 Z?1? ?4
Note: The legally responsible party should not be a homeowners association unless more than 50% of
the lots have been sold and a resident of the subdivision has been named the president.
I, ,' D t3-40 e- 1Af W l LSoh , a Notary Public for the State of
W -,County of ,?&o , do hereby certify that
?? I,_.a, AAA personally appeared before me this
day of &-I4UA_, , and acknowledge the due execution of the
forgoing filter strip, riparian buffer, and/or level spreader maintenance requirements.
Witness my hand and official seal,
?y W I C SO
a :' •.? AR y
p20 : V
9 •'•..Pue\.\ •'ti
9 •.......•'? 'o' C
4,
kC IN SEAL

My commission expires /,0- 15" 20 12."
Form SWU401-Level Spreader, Filter Strip, Restored Riparian Buffer O&M-Rev.3 Page 3 of 3
Kimley-Horn
and Associat
es, Inc. Sheet No. of
Job ?AYt, 0 2 ST(? ty T" Subject LUYP4-5S Job No.
Designed by % TP Date i 2 - t) o Checked by Date
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