20070192 Ver 1_401 Application_20070207

Soil,& Environmental Consultants, PA
11010 Raven Ridge Road • Raleigh, North Carolina 27614 • Phone: [phone] • Fax: [phone]
www.SandEC.com
January 31, 2007
S&EC Project # 8936.W6
To: US Army Corps of Engineers
Raleigh Regulatory Field Office
Attn: Thomas Brown
6508 Falls of the Neuse Rd, Suite 120
Raleigh, N.C. 27615
From: Debbie Edwards
Soil & Environmental Consultants, P.A.
11010 Raven Ridge Road
Raleigh, NC 27614
NC Division of Water Quality
401 Oversight and Express Permits Unit
Attn: Cyndi Karoly
2321 Crabtree Boulevard, Suite 250
Ralei h NC 27604-2260
k
PAYI"?iLNT F; Y,
RECEIVED
OENR - VV,NTI R QUAL! r
Re: Cedar Ridge Subdivision 2 0 0 7 0 1 9 2 kE ItAWo't! a1413 0t,??#'TFR p
Clayton, Johnston County, NC
On behalf of the owner, Sherrill W. Butler and future owner/developer, Triangle Asset Management LLC, please find attached a
complete application and supplemental information requesting written concurrence from the U.S. Army Corps of Engineers
(USACE) and the North Carolina Division of Water Quality (NC-DWQ) that the activities proposed below may proceed utilizing
Nationwide Permit 39 and Water Quality Certification 3402. In addition, written authorization from the NC-DWQ is requested
for activities proposed to impact Neuse River Buffers. Please contact me at [phone] if you have any questions or require
additional information.
PROJECT SUMMARY
Project Name Cedar Ridge Subdivision
Project Type Residential Development
Owner / Applicant Triangle Asset Management, LLC
County Johnston
Nearest Town Clayton
Waterbod Name UT to Neuse
Basin / Sub-basin 03-04-02
Index Number 27-(38.5)
Class WS-IV; NSW
IMPACT SUMMARY
Stream Impact (acres): 0.024
Wetland Impact (acres): 0
Open Water Impact (acres): 0
Total Impact to Waters of the U.S. (acres): 0.024
Total Stream Impact (linear feet): 143
Total Riparian Buffer Impacts (square feet): 21,641
Attachments:
Pre-construction Notification (PCN) Application Form
Agent Authorization
USGS Vicinity Map
Wake County Soil Survey
USACE Jurisdictional Determination (Action ID# 200520982)
DWQ Buffer Determination letter (NBRRO #05-0048)
EEP Acceptance letter
Open Space Plan and Key Sheet (sheet 1 of 6)
Impact Maps (sheets 2 of 6, 5 of 6 and 6 of 6)
Stream Crossing Profiles (sheets 3 of 6 and 4 of 6)
Level Spreader Calculations and worksheets
Grading and Drainage Plans
Cedar Ridge I OYR System Drainage Report
Storm Details Plans
Operations & Maintenance Agreement
$200.00 Water Quality Certification Fee
Charlotte Office: Greensboro Office:
236 LePhillip Court, Suite C 3817-E Lawndale Drive
Concord, NC 28025 Greensboro, NC 27455
Phone: [phone] Phone: [phone]
Fax: [phone] Fax: [phone]
Office Use Only: Form Version March 05
20070 1 92
USACE Action ID No. DWQ No.
(If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A".)
1. Processing
F ,Yn4 FN RECEIVED
1. Check all of the approval(s) requested for this project:
® Section 404 Permit ® Riparian or Watershed Buffer Rules
? Section 10 Permit ? Isolated Wetland Permit from DWQ
® 401 Water Quality Certification ? Express 401 Water Quality Certification
2. Nationwide, Regional or General Permit Number(s) Requested: 39
3. If this notification is solely a courtesy copy because written approval for the 401 Certification
is not required, check here: ?
4. If payment into the North Carolina Ecosystem Enhancement Program (NCEEP) is proposed
for mitigation of impacts, attach the acceptance letter from NCEEP, complete section VIII,
and check here:
5. If your project is located in any of North Carolina's twenty coastal counties (listed on page
4), and the project is within a North Carolina Division of Coastal Management Area of
Environmental Concern (see the top of page 2 for further details), check. here: ?
II. Applicant Information " N2 Lis
!
nt
1. Owner/Applicant Information F Z Q Q 7
Name: Sherrill W. Butler c/o Triangle Asset Management, LC
Mailing Address: 4509 Creedmoo' al ?tl ow
Raleigh, NC 27612
Telephone Number 919-838-8484 Fax Number: 919-838-8425
E-mail Address:
2. Agent/Consultant Information (A signed and dated copy of the Agent Authorization letter
must be attached if the Agent has signatory authority for the owner/applicant.)
Name: Debbie Edwards
Company Affiliation: Soil & Environmental Consultants, PA
Mailing Address: 11010 Raven Ridge Road
Raleigh, NC 27614
Telephone Number: 919-846-5900 Fax Number: 919-846-9467
E-mail Address: dedwardsna sandec.com
Page 1 of 10
III. Project Information
Attach a vicinity map clearly showing the location of the property with respect to local
landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property
boundaries and development plans in relation to surrounding properties. Both the vicinity map
and site plan must include a scale and north arrow. The specific footprints of all buildings,
impervious surfaces, or other facilities must be included. If possible, the maps and plans should
include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property
boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion,
so long as the property is clearly defined. For administrative and distribution purposes, the
USACE requires information to be submitted on sheets no larger than 11 by 17-inch format;
however, DWQ may accept paperwork of any size. DWQ prefers full-size construction
drawings rather than a sequential sheet version of the full-size plans. If full-size plans are
reduced to a small scale such that the final version is illegible, the applicant will be informed that
the project has been placed on hold until decipherable maps are provided.
1. Name of project: Cedar Ridge Subdivision
2. T.I.P. Project Number or State Project Number (NCDOT Only): n/a
3. Property Identification Number (Tax PIN): 1678-38-4773
4. Location
County: Johnston Nearest Town: Clayton
Subdivision name (include phase/lot number): Cedar Ridge Subdivision
Directions to site (include road numbers/names, landmarks, etc.): The subject site is located
on the north side of Glen Laurel Road (SR 1902), pproximately 1,420' south of the
intersection with NC 42, Clanton NC.
5. Site coordinates (For linear projects, such as a road or utility line, attach a sheet that
separately lists the coordinates for each crossing of a distinct waterbody.)
Decimal Degrees (6 digits minimum): 35.6396 ON 78.4169 °W
6. Property size (acres): +/- 65 acres
7. Name of nearest receiving body of water: UT to Neuse River 27-(38.5), WS-IV; NSW
8. River Basin: Neuse (03-04-02)
(Note - this must be one of North Carolina's seventeen designated major river basins. The
River Basin map is available at http://112o.enr.state.nc.us/admin/map-./.)
9. Describe the existing conditions on the site and general land use in the vicinity of the project
at the time of this application: The existing conditions onsite are primarily forested with a
10. Describe the overall project in detail, including the type of equipment to be used:
Page 2 of 10
The proposed project is for a single-family residential development consisting of 85 single-
family lots with permanent impacts resulting from the installation of a road. This impact is
necessary for accessing the north side of the property. In addition, there are temporary
riparian buffer impacts resulting from the clearing necessary for utilities. Heavy equipment
typically used for road construction and clearing will be employed for this project.
11. Explain the purpose of the proposed work: The purpose of this project is to provide
additional housing for the area.
IV. Prior Project History
If jurisdictional determinations and/or permits have been requested and/or obtained for this
project (including all prior phases of the same subdivision) in the past, please explain. Include
the USACE Action ID Number, DWQ Project Number, application date, and date permits and
certifications were issued or withdrawn. Provide photocopies of previously issued permits,
certifications or other useful information. Describe previously approved wetland, stream and
buffer impacts, along with associated mitigation (where applicable).. If this is a NCDOT project,
list and describe permits issued for prior segments of the same T.I.P. project, along with
construction schedules.
S&EC conducted detailed wetland delineations and Neuse River Buffer evaluations on the
entire site On February 18, 2005, Mr. Mike Horan with the NC-DWQ conducted a site visit to
confirm Neuse Buffer determinations (NBRRO# 05-0048) on the eastern portion of the site and
on July 1 2005, Ms Jean Manuele with the USACE signed the jurisdictional determination
(Action ID 200520982). Additionally, on August 8, 2006, Mr. Thomas Brown of the USACE
conducted a site visit to confirm jurisdictional wetlands and waters on the western portion of the
property, the submittal package for a jurisdictional determination was submitted to the USACE
for signature on September 7, 2006.
V. Future Project Plans
Are any future permit requests anticipated for this project? If so, describe the anticipated work,
and provide justification for the exclusion of this work from the current application.
No additional permits are anticipated at this time.
VI. Proposed Impacts to Waters of the United States/Waters of the State
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
wetlands, open water, and stream channels associated with the project. Each impact must be
listed separately in the tables below (e.g., culvert installation should be listed separately from
riprap dissipater pads). Be sure to indicate if an impact is temporary. All proposed impacts,
permanent and temporary, must be listed, and must be labeled and clearly identifiable on an
accompanying site plan. All wetlands and waters, and all streams (intermittent and perennial)
should be shown on a delineation map, whether or not impacts are proposed to these systems.
Wetland and stream evaluation and delineation forms should be included as appropriate.
Photographs may be included at the applicant's discretion. If this proposed impact is strictly for
Page 3 of 10
wetland or stream mitigation, list and describe the impact in Section VIII below. If additional
space is needed for listing or description, please attach a separate sheet.
1. Provide a written description of the proposed impacts:
Proposed permanent impacts include 143 linear feet of perennial/important stream channel.
2. Individually list wetland impacts. Types of impacts include, but are not limited to
mechanized clearing, grading, fill, excavation, flooding, ditching/drainage, etc. For dams,
separately list impacts due to both structure and flooding.
Wetland Impact Type of Wetland Located within Distance to Area of
Site Number Type of Impact (e.g., forested, marsh, 100-year
Floodplain Nearest
Stream Impact
(acres)
(indicate on map) herbaceous, bog, etc.) (yes/no) linear feet
N/A N/A N/A N/A N/A N/A
Total Wetland Impact (acres) N/A
3. List the total acreage (estimated) of all existing wetlands on the property: 0.275 acres
4. Individually list all intermittent and perennial stream impacts. Be sure to identify temporary
impacts. Stream impacts include, but are not limited to placement of fill or culverts, dam
construction, flooding, relocation, stabilization activities (e.g., cement walls, rip-rap, crib
walls, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is proposed,
plans and profiles showing the linear footprint for both the original and relocated streams
must be included. To calculate acreage, multiply length X width, then divide by 43,560.
Stream Impact
Perennial Average Impact Area of
Number Stream Name Type of Impact Intermittent? t? Stream Width Length Impact
indicate on ma Before Impact (linear feet) acres
Impact Area #1 UT to Neuse Permanent-Road fill Perennial 71- 8' 143' 0.024
Total Stream Impact (by length and acreage) 143' 0.024
Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic
Ocean and any other water of the U.S.). Open water impacts include, but are not limited to
fill, excavation, dredging, flooding, drainage, bulkheads, etc.
Open Water Impact Name of Waterbody Type of Waterbody Area of
Site Number (if applicable) Type of Impact (lake, pond, estuary, sound, bay, Impact
indicate on ma ocean, etc. (acres)
N/A N/A N/A N/A N/A
Total Open Water Impact (acres) N/A
6. List the cumulative impact to all Waters of the U.S. resulting from the project:
Page 4 of 10
Stream Impact (acres): .0.024
Wetland Impact (acres): 0
Open Water Impact (acres): 0
Total Impact to Waters of the U.S. (acres) 0.024
Total Stream Impact (linear feet): 143
7. Isolated Waters
Do any isolated waters exist on the property? ? Yes ® No
Describe all impacts to isolated waters, and include the type of water (wetland or stream) and
the size of the proposed impact (acres or linear feet). Please note that this section only
applies to waters that have specifically been determined to be isolated by the USACE.
There are no isolated wetland onsite.
8. Pond Creation
If construction of a pond is proposed, associated wetland and stream impacts should be
included above in the wetland and stream impact sections. Also, the proposed pond should
be described here and illustrated on any maps included with this application.
Pond to be created in (check all that apply): ? uplands ? stream ? wetlands
Describe the method of construction (e.g., dam/embankment, excavation, installation of
draw-down valve or spillway, etc.): N/A
Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond,
local stormwater requirement, etc.): N/A
Current land use in the vicinity of the pond: N/A
Size of watershed draining to pond: N/A Expected pond surface area: N/A
VII. Impact Justification (Avoidance and Minimization)
Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide
information related to site constraints such as topography, building ordinances, accessibility, and
financial viability of the project. The applicant may attach drawings of alternative, lower-impact
site layouts, and explain why these design options were not feasible. Also discuss how impacts
were minimized once the desired site plan was developed. If applicable, discuss construction
techniques to be followed during construction to reduce impacts.
The proposed road crossing (Impact Area #1) is needed to access the northern portion of the
property. This road crossing was designed with head walls and at a near perpendicular angle to
minimize impacts to the maximum extent practicable. Impact Area #2 is for an 8" sanitary
sewer line that is to connect to an existing manhole within the adjacent, existing Forest Glen
Subdivision. This portion of the 8" sanitary sewer line that is outside of our property boundary
is proposed within an existing Town of Clayton 20' sewer easement. Because of the existing
manhole location, the private lot line for lot #25 and the location of the stream, this 8" sanitary
sewer line is feasibly as far away from the stream as possible (sheet 5 of 6). To propose this 8"
sanitary sewer line on the north side of the stream would require increased Zone I riparian
buffer impacts and impacts to jurisdictional waters. All wetlands have been avoided and the
western portion of the property is to remain as "open space" for the Town of Clayton.
Page 5 of 10
VIII. Mitigation
DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC
Division of Water Quality for projects involving greater than or equal to one acre of impacts to
freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial
streams.
USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide
Permits, published in the Federal Register on January 15, 2002, mitigation will be required when
necessary to ensure that adverse effects to the aquatic environment are minimal. Factors
including size and type of proposed impact and function and relative value of the impacted
aquatic resource will be considered in determining acceptability of appropriate and practicable
mitigation as proposed. Examples of mitigation that may be appropriate and practicable include,
but are not limited to: reducing the size of the project; establishing and.maintaining wetland
and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of
aquatic resource functions and values by creating, restoring, enhancing, or preserving similar
functions and values, preferable in the same watershed.
If mitigation is required for this project, a copy of the mitigation plan must be attached in order
for USACE or DWQ to consider the application complete for processing. Any application
lacking a required mitigation plan or NCEEP concurrence shall be placed on hold as incomplete.
An applicant may also choose to review the current guidelines for stream restoration in DWQ's
Draft Technical Guide for Stream Work in North Carolina, available at
http://h2o.enr.state.nc.us/ncwetlands/strmgide.html.
1. Provide a brief description of the proposed mitigation plan. The description should provide
as much information as possible, including, but not limited to: site location (attach directions
and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet)
of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view,
preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a
description of the current site conditions and proposed method of construction. Please attach
a separate sheet if more space is needed.
In similar situations in the past where stream impacts are less than 150 linear feet to
important/perennial streams, mitigation is not required by the USACE and can not be
required by the NC-DWQ, therefore mitigation has not been proposed. However, if
mitigation should be required then the applicant shall utilize the Ecosystem Enhancement
Proaram.
2. Mitigation may also be made by payment into the North Carolina Ecosystem Enhancement
Program (NCEEP). Please note it is the applicant's responsibility to contact the NCEEP at
[phone] to determine availability, and written approval from the NCEEP indicating
that they are will to accept payment for the mitigation must be attached to this form. For
additional information regarding the application process for the NCEEP, check the NCEEP
website at http://h2o.enr.state.nc.us/wM/index.htm. If use of the NCEEP is proposed, please
check the appropriate box on page five and provide the following information: .
Page 6 of 10
Amount of stream mitigation requested (linear feet): 0
Amount of buffer mitigation requested (square feet): 7.791 ft'
Amount of Riparian wetland mitigation requested (acres): 0
Amount of Non-riparian wetland mitigation requested (acres): 0
Amount of Coastal wetland mitigation requested (acres): 0
IX. Environmental Documentation (required by DWQ)
1. Does the project involve an expenditure of public (federal/state/local) funds or the use of
public (federal/state) land? Yes ? No
2. If yes, does the project require preparation of an environmental document pursuant to the
requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)?
Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA
coordinator at [phone] to review current thresholds for environmental documentation.
Yes ? No ?
3. If yes, has the document review been finalized by the State Clearinghouse? If so, please
attach a copy of the NEPA or SEPA final approval letter. Yes ? No ?
X. Proposed Impacts on Riparian and Watershed Buffers (required by DWQ)
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
required state and local buffers associated with the project. The applicant must also provide
justification for these impacts in Section VII above. All proposed impacts must be listed herein,
and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a
map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ
Regional Office may be included as appropriate. Photographs may also be included at the
applicant's discretion.
1. Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233
(Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 02B .0243 (Catawba) 15A NCAC
2B .0250 (Randleman Rules and Water Supply Buffer Requirements), or other (please
identify )? Yes ® No ?
2. If "yes", identify the square feet and acreage of impact to each zone of the riparian buffers.
If buffer mitigation is required calculate the required amount of mitigation by applying the
buffer multipliers.
IMPACT AREA #1 (permanent road crossing)
Zone* Impact
(square feet) Multiplier Required
Mitigation
1 8,004 3 (2 for Catawba) N/A
2 4,360 1.5 N/A
Total 12,364 N/A
Page 7 of 10
IMPACT AREA #2 (temnorarv sanitarv sewer crossine)
Zone* Impact
(s uare feet) Multiplier Required
Mitigation
1 2,597 3 (2 for Catawba) 7,791
2 2,383 1.5 N/A
Total 4,980 N/A
IMPACT AREA #3 (temporary, grading)
Impact Required
Zone* Multiplier r4;+;.,.,+;--
1 0 3 (2 for Catawba) N/A
2 255 1.5 N/A
Total 255 N/A
IMPACT AREA #4 (nermanent. level spreader bvaass)
Zone* Impact
s are feet) Multiplier Required
Mitigation
1 602 3 (2 for Catawba) N/A
2 720 1.5 N/A
Total 1,322 N/A
IMPACT AREA #5 (permanent. level spreader bvpass)
Zone* Impact
(square feet) Multiplier Required
Mitigation
1 805 3 (2 for Catawba) N/A
2 725 1.5 N/A
Total 1,530 N/A
IMPACT AREA #6 (nermanent_ level spreader bvnass)
Zone* Impact
(s uare feet Multiplier Required
Mitigation
1 855 3 (2 for Catawba) N/A
2 335 1.5 N/A
Total 1,190 N/A
* Zone 1 extends out 30 feet perpendicular from the top of the near bank of channel; Zone 2
extends an additional 20 feet from the edge of Zone 1.
3. If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e.,
Donation of Property, Riparian Buffer Restoration / Enhancement, or Payment into the
Riparian Buffer Restoration Fund). Please attach all appropriate information as identified
within 15A NCAC 2B .0242 or .0244, or .0260.
Accordine to Neuse River Basin Buffer Rules NCAC 02B_ ..0233(6), ri>arian buffer
mitigation is required for the "impacts other than perpendicular crossings in Zone 1" for non-
electric utility lines. Therefore the applicant proposes payment to the Ecosystem
Enhancement Program (EEP) for the proposed sanitary sewer riparian buffer impacts that are
Page 8 of 10
not perpendicular and located in Zone 1 (Impact Area #2). Please see attached EEP
acceptance letter.
XI. Stormwater (required by DWQ)
Describe impervious acreage (existing and proposed) versus total acreage on the site. Discuss
stormwater controls proposed in order to protect surface waters and wetlands downstream from
the property. If percent impervious surface exceeds 20%, please provide calculations
demonstrating total proposed impervious level.
The percent impervious for the entire project (65.31 acres is proposed to be 17.2%. However,
the percent impervious for the "effective" area (39.80 acres) is proposed to be 28.2%; 25.51
acres is to remain in "open space" as required by the Town of Clayton (see sheet 1 of 6). The
applicant is proposing level spreaders at all areas where stormwater is to be
collected/concentrated and will be directed to these level spreaders before discharging into the
riparian buffer. Attached are the level spreader calculations level spreader worksheets
photographs bypass channel analysis rgports,, grading and discharge plans and level spreader
details Additionally, a signed and notarized Operations & Maintenance Agreement is attached.
XII. Sewage Disposal (required by DWQ)
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.
The proposed project will tie into existing sanitary sewer lines for the Town of Clayton.
The Town will ensure that the capacity of their facility is not exceeded.
XIII. Violations (required by DWQ)
Is this site in violation of DWQ Wetland Rules (15A NCAC 2H .0500) or any Buffer Rules?
Yes ? No
Is this an after-the-fact permit application? Yes ? No
XIV. Cumulative Impacts (required by DWQ)
Will this project (based on past and reasonably anticipated future impacts) result in additional
development, which could impact nearby downstream water quality? Yes ? No
If yes, please submit a qualitative or quantitative cumulative impact analysis in accordance with
the most recent North Carolina Division of Water Quality policy posted on our website at
http://h2o.enr.state.nc.us/ncwetlands. If no, please provide a short narrative description:
We have reviewed the "DRAFT Internal Policy, Cumulative impacts and the 401 Water Quality
Certification and Isolated Wetland Programs" document prepared by the NC Division of Water
_Quality on October 3 2002, version 1.6. The draft states that most small residential
developments are unlikely to cause cumulative impacts. Cedar Ridge Subdivision does not meet
any of the three criteria of private projects that can clearly result in cumulative impacts. We
anticipate that you will advise us if a qualitative or quantitative impact analysis is required.
Page 9 of 10
XV. Other Circumstances (Optional):
It is the applicant's responsibility to submit the application sufficiently in advance of desired
construction dates to allow processing time for these permits. However, an applicant may
choose to list constraints associated with construction or sequencing that may impose limits on
work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and
Threatened Species, accessibility problems, or other issues outside of the applicant's control).
N/A
Applicant/Agent's Signature Date
(Agent's signature is valid only if an authorization letter from the applicant is provided.)
Page 10 of 10
SENT BY: CDS ;
919 838 8425; MAY-4.05 16:44; PAGE 2
Environmental Consultants, Phi.
Rod • R* W Nw& CwW= 27614 • row (314) 89&9900 • For: (914) 64G.R467
www.t.oom
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Tha Depsrwxm of the Army
U.S. Army Corps of Bagimc WiittrirWm District
F.O. Box )890
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Attn
Field Office:
Re: WedwAs Related Cmdulti ng and Pestnttting
To Wham it may cotrc =
L the currract landawnw or mM04W OffI0 , hemby dcdignate gad cut a Soil & EwArO mCtttal CoWAWM%
PA to act in pq behalf as uW again is tic g of pctruit applicAt ores, to furnlah upon rcqu u suMja=ttd
inftmation in autppost of apt„tMicatton; ew. &OIn this day f'acaraed. Tho day of
This OfiftMon std any ptcviatts =amdem can=vbg the for this pm om
NOTIM Tea todtorlaadw for W& thy std PWMI i M ca deq Nausea, Is vM a* for goat oMdO to
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Print Property Owner's or MtrnioiW Official's Nana I*aty OOwnWaorMvnidpal . Otficud s SWed=
cc: Ms. Cyndi Kawly cc: W. Aswu Caspar
NCDEM - DWQ Soil & Esviro l Cats, PA
2321 Cr'abum SoalevW
Ral*bL,.NC 27604
736'q? C?ourt, S<,;4c c 3B1T-g Lan+data i1„we
cm"Id"Nc 26025 C mw*om NC 27455
Phone (704) 72N940S Pho+- (336) 5404Z4
Fsx: (704) M"% Fw (336).%&W5
AGENT AUMORI7ATION FORM
All Blames To Be Filled in By The QVrrew Lutkwner or MuniMg Official
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Project No.
8936
W6 Scale:
"
' FIG. 2 - SOIL SURVEY MAP SOURCE:
. 1
= 2000 11010 R
Rid
Rd
RIVERS & ASSOCIATES, INC. JOHNSTON COUNTY aven
ge
.
Project Mgr.
DE Drawn By:
MM
CEDAR RIDGE SUBDIVISION
SOIL SURVEY
DATED
1980 SHEET
1 Ralegh, NC 27614
919-84&59W
Date: 01130/07 JOHNSTON CO., NC :
:
20070 1 0 2
U.S. ARMY CORPS OF ENGINEERS
WILMINGTON DISTRICT
Action Id. 200520982 County: Johnston U.S.G.S. Quad: Clayton j% i I 1 . ?005
NOTIFICATION OF JURISDICTIONAL DETERMINATION J
Property Owner/Agent: Lennar Carolina, Inc.
Address: Attn: Mr. Sherrill Warren Butler
1201 Edwards Mill Road, Suite 301
Raleigh, NC 27607
Telephone No.: 919-865-1900
Size and location of property (waterbody, road name/number, town, etc.) The property is located on the north
side of Glen Laurel Road, approximately 0.5 mile east of NC Highway 42, east of Clayton, Johnston County,
North Carolina.
Indicate Which of the Following Apply:
_ Based on preliminary information, there may be Wetlands and stream channel on the above described property.
We strongly suggest you have this property inspected to determine the extent of Department of the Army (DA)
jurisdiction. To be considered final, a jurisdictional determination must be verified by the Corps.
_ There are Wetlands and stream channel on the above described property subject to the permit requirements of
Section 404 of the Clean Water Act (CWA)(33 USC § 1344). Unless there is a change in the law or our
published regulations, this determination may be relied upon for a period not to exceed five years from the date
of this notification.
We strongly suggest you have the Wetlands and stream channel on your property delineated. Due to the size
of your property and/or our present workload, the Corps may not be able to accomplish this wetland delineation
in a timely manner. For a more timely delineation, you may wish to obtain a consultant. To be considered
final, any delineation must be verified by the Corps.
The wetlands and stream channel on your property have been delineated and the delineation has been verified
by the Corps. We strongly suggest you have this delineation surveyed. Upon completion, this survey should be
reviewed and verified by the Corps. Once verified, this survey will provide an accurate depiction of all areas
subject to CWA jurisdiction on your property which, provided there is no change in the law or our published
regulations, may be relied upon for a period not to exceed five years.
X- The wetlands and stream channel have been delineated and surveyed and are accurately depicted on the plat
signed by the Corps Regulatory Official identified below on 1 July 2005 . Unless there is a change in the law
or our published regulations, this determination may be relied upon for a period not to exceed five years from
the date of this notification.
_ There are no waters of the U.S., to include wetlands, present on the above described property which are subject
to the permit requirements of Section 404 of the Clean Water Act (33 USC 1344). Unless there is a change in
the law or our published regulations, this determination may be relied upon for a period not to exceed five years
from the date of this notification.
The property is located in one of the 20 Coastal Counties subject to regulation under the Coastal Area
Management Act (CAMA). You should contact the Division of Coastal Management in
Washington, NC, at [phone] to determine their requirements.
Remarks:
Corps Regulatory Official:
Date 1 July 2005 Expiration Date 1 July 2010
Page 1 of 2
Action ID. 200520982
Placement of dredged or fill material within waters of the US and/or wetlands without a Department of the Army
permit may constitute a violation of Section 301 of the Clean Water Act (33 USC § 1311). If you have any
questions regarding this determination and/or the Corps regulatory program, please contact Jean B. Manuele at
919-876-8441. Ext. 24.
Basis For Determination: The site contains wetlands as determined by the USACE 1987 Wetland Delineation
Manual and is adjacent to stream channels located on the property. The stream channel on the property is an
unnamed tributary to the Neuse River which flows ultimately flows to the Atlantic Ocean.
Corps Regulatory Official (Initial):
FOR OFFICE USE ONLY:
• A plat or sketch of the property and the wetland data form must be attached to the file copy of this form.
• A copy of the "Notification Of Administrative Appeal Options And Process And Request For Appeal"
form must be transmitted with the property owner/agent copy of this form.
• If the property contains isolated wetlands/waters, please indicate in "Remarks" section and attach the
"Isolated Determination Information Sheet" to the file copy of this form.
CF: Mr. Aaron Cooper, S&EC
Michael F. Easley, Governor
OF W ATF9 William G. Ross Jr., Secretary
\OC? QG North Carolina Department of Environment and Natural Resources
r Alan W. Klimek, P.E. Director
Colleen H. Sullins, Deputy Director
O 2 0 0 7 0 1 9 2 Division of Water Quality
February 22, 2005
Aaron Cooper
S&EC
11010 Raven Ridge Road
Raleigh, NC 27614
i
MAR 2 2005
i.
Attn: Mr. Cooper
BASIN:
Neuse River X
Tar-Pamlico
NBRRO#05-0048
County: Johnston
(I5ANCAC 2B .0233)
(15A NCAC 2B .0259)
Complaint NOV Buffer Determination X
Incident # Appeal Call
Project Name: Lennar Butler Tract V
Location/Directions: off of SR 1902 near the Wood Cem.
Subject Stream: UT to the Neuse River
Date of Determination: 2/18/05
Feature Start Buffer
GPS Points (if
provided) End Buffer Stream
Form Appeal
Call Located
on Soil
Survey Located on
USGS
Topographic
A Not Contested x X
B Not Subject X

Raleigh Regional Office 1628 Mail Service Center
Water Quality Section Raleigh, NC 27699-1628
NCDENR phone [phone] Customer Service
facsimile [phone] 1-877-623-6748
Lennar tsutier ract
S&EC
2/22/2005
Page 2 of 2
This on-site determination shall expire five (5) years from the date of this letter. Landowners or affected parties
that dispute a determination made by the DWQ or Delegated Local Authority that a surface water exists and that
it is subject to the buffer rule may request a determination by the Director. A request for a determination by the
Director shall be referred to the Director in writing clo Cyndi %aroly, DWQ Wetlands1401 Unit, 2321 Crabtree
Blvd., Raleigh, NC 27604-2260. Individuals that dispute a determination by the DWQ or Delegated Local
Authority that "exempts" a surface water from the buffer rule may ask for an ad judicatory hearing. You must
act within 60 days of the date that you receive this letter. Applicants are hereby notified that the 60-day statutory
appeal time does not start until the affected party (including downstream and adjacent landowners) is notified of
this decision. DWQ recommends that the applicant conduct this notification in order to be certain that third
party appeals are made in a timely manner. To ask for a hearing, send a written petition, which conforms to
Chapter 150B of the North Carolina General Statutes to the Office of Administrative Hearings, 6714 Mail
Service Center, Raleigh, N.C. 27699-6714. This determination is final and binding unless you ask for a hearing
within 60 days.
The (owner/future owners) should notify the Division of Water Quality (including any other Local, State, and
Federal Agencies) of this decision concerning any future correspondences regarding the subject property (stated
above). This project may require a Section 4041401 Permit for the proposed activity. Any inquiries should be
directed to the Division of Water Quality (Central Office) at (919)-733-1786, and the US Army Corp of Engineers
(Raleigh Regulatory Field Office) at (919)-876-8441.
Respectfully,
Michael Horan
Environmental Spec. I
CC: File Copy
Central Files
DWQ 401 Wetlands Office
20070192

2007 1 92
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8936ect No. Figure 2 r Soil Survey Map
Lennar Butler Tract Soil & Environmental Consultants, PA
Sc Project Mgr.: Johnston County, NC 11010 Raven Ridge Rd.- Raleigh, NC 27614
[phone] • [phone]
Web Page: www.SandEC.com
Scale:
1" = 2,000'
12/16104 Johnston County Soil Survey `(a o5
Sheets 1 & 6
-, t11, tl 401, s stem
PROGRAM
January 31, 2007
Triangle Asset Management, LLC
4509 Creedmor Rd., Suite 202
Raleigh, NC 27612
20070192
Project: Cedar Ridge Subdivision County: Johnston
The purpose of this letter is to notify you that the North Carolina Ecosystem Enhancement Program (NCEEP) is willing to
accept payment for impacts associated with the above referenced project. Please note that this decision does not assure that
the payment will be approved by the permit issuing agencies as mitigation for project impacts. It is the responsibility of the
applicant to contact these agencies to determine if payment to the NCEEP will be approved.
This acceptance is valid for six months from the date of this letter. If we have not received a copy of the issued 404
Permit/401 Certification/CAMA permit within this time frame, this acceptance will expire. It is the applicant's
responsibility to send copies of the permits to NCEEP. Once NCEEP receives a copy of the permit(s) an invoice will be
issued based on the required mitigation in that permit and payment must be made prior to conducting the authorized work.
The amount of the In Lieu Fee to be paid to NCEEP by an applicant is calculated based upon the Fee Schedule and policies
listed at www.nceep.net.
Based on the information supplied by you the impacts that may require compensatory mitigation are summarized in the
following table.
Neuse
03020201 Stream (feet) Wetlands (acres) Buffer I
(Sq. Ft.) Buffer II
(Sq. Ft.)
Cold Cool Warm Riparian Non-Riparian Coastal Marsh
Impacts 0 0 0 0 0 0 2,597 0
Credits 0 0 0 0 0 0 7,791 0
Upon receipt of payment, EEP will take responsibility for providing the compensatory mitigation. If the regulatory agencies
require mitigation credits greater than indicated above, and the applicant wants NCEEP to be responsible for the additional
mitigation, the applicant will need to submit a mitigation request to NCEEP for approval prior to permit issuance. The
mitigation will be performed in accordance with the Memorandum of Understanding between the N. C. Department of
Environment and Natural Resources and the U. S. Army Corps of Engineers dated November 4, 1998.
If you have any questions or need additional information, please contact Kelly Williams at [phone].
Sincerely,
-6- &'?Y A-
Willi 7DGilmore, PE
Director
cc: Cyndi Karoly, Wetlands/401 Unit
Jean Manuele, USACE-Raleigh
Mike Horan, DWQ-Raleigh
Debbie Edwards, agent (e-mail)
File
R.estioring... E ... Prot" Our State MU
North Carolina Ecosystem Enhancement Program, 1652 Mail Service Center, Raleigh, NC 27699-1652 / 91 9-71 5-0476 / www.nceep.net
;?! 70
1??
LEVEL SPREADER OPERATION AND MAINTENANCE AGREEMENT
The level spreader is defined as an elongated, level threshold, designed to diffuse stormwater runoff.
Maintenance activities shall be performed as follows:
1. After construction and until vegetation has been established, level spreader(s) shall be inspected after
every rainfall. Thereafter, level spreader(s) shall be inspected at least every month and more
frequently during the fall season and after heavy rainfall events:
a. Accumulated sediment, leaves, and trash shall be removed, and repairs made if required.
b. Inspect level spreader(s) for evidence of scour, undercutting, settlement of the structure, and
concentrated flows downhill from the level spreader(s).
c. A level elevation shall be maintained across the entire flow-spreading structure at all times.
Repair or replace the level spreader if it is damaged.
d. Mow vegetative cover to a height of six (6) inches and prune plants if they cover over half of the
level spreader surface.
e. Repair eroded areas and replace/replant dead or damaged vegetation.
2. The contractor should avoid the placement of any material on and prevent construction traffic across
the structure. If the measure is damaged by construction traffic, it shall be repaired immediately.
3. Inspect and repair the collection system (e.g., catch basins, pipes, swales, riprap) four (4) times a year
to maintain proper functioning.
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.
Print name:
Title: ??Ji?cLc:+r i?
Address: 4SQ9: C4 1p m gpz i v;4i> T?_ 26 Z Ow-atj,? 10 14C
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 .?ammy Ij A,,;s (,J; t-ta rk,?cs _,a Notary Public for the State of
ii'-??--?
County of L-0 a-k 2 , do hereby certify that G le-n C- as /Z,
personally appeared before me this _4day of ?q, and acknowledge the due
execution of the forgoing wet [wetland] detention basin maintenance requirements. Witness my hand and
official
SEAL
My commission expires c Z?D?
Page 1 of 1
-------
?/awr ra?rax?,,%
SHEET 5
SANITARY SEWER OUTFALL
SHEET 2
ROAD CROSSING

aarua
20070192
TOTAL ACREAGE
RIGHT OF WAY 6.36 AC.
LOTS (85) 24.92 AC.
OPEN SPACE 34.03 AC
TOTAL 65.31
LOT DATA
NUMBER OF LOTS
LOT AREA
A VERAGE LOT SIZE
ES77MA7ED IMPERVIOUS
PER LOT
LOT IMPERVIOUS AREA
IMPERVIOUS AREA
85
24.92 AC.
12,770 S. F
3, 350 S .F.
6.537 AC.
ROADS (BOC-BOC) 4.029 AC.
SIDEWALK 0.666 AC.
LOT IMPERVIOUS 6.537 AC.
TOTAL IMPERVIOUS 11.232 AC.
25.51 AC.
EFFECTI VE
PERCENT IMPERVIOUS (GROSS)
TOTAL SITE AREA 65.31 AC. i-
TOTAL IMPERVIOUS 11.232 AC. ?-
PERCENT IMPERVIOUS 1729

PERCENT IMPERVIOUS (ZFFECTIVE, ' GRAPHIC
EFFECTIVE SITE AREA 39.80 AC. 7 ,
300 a
TOTAL IMPERVIOUS 11.232 AC. e
; )
PERCENT IMPERVIOUS 28.29 Z
( IN S')
1 inch = 300 M
LEGEND
OPEN SPACE
WETLANDS
PROD EW LWA* G
DO NOT LASE FOR COA67RUC7701V
" IMPACT AREA #1
ROAD CROSSING
I ZONE 1 DISTURBED AREA = 8004 SF.
C) ZONE 2 DISTURBED AREA = 4360 SF.
STREAM DISTURBANCE = 1044 SF.
/ N LENGTH OF STREAM IMPACT = 143 LF.
z
N-.N
/ Z
N ' - HEAD WALL N
/ 1 PERMANENT OUTLET PROTECTION
1 ( 12'W. X 161L. X 24"THK. /
DBL 48C up
CLASS 1 RIP RAP
90 LF. ® 1.11% a f ,-
{ TOP OF
m °HEAD WALL BANK Q) LU
i
I R
APPROX. ?
APPROX. STREAM
T
?tt,, Y1 t7t 1 ..
- Z .. , ?. 7
eC It F Yy / / _
STREAM
Y ?u ?
PERMANENT INLET PROTECTION
??? 12'W X 61. X 24 THK. x Y? ' as x`" r
s: aq
CLASS 1 RIP RAP = k { k IMPACT AREA #2
i a F s SEE SHEET 5 OF 5
1
roP OF
rri
BANK
I << y
.?..? NOTE w"
w '
STREAM IMPACT BUFFER ZONES ARE DETERMINED ? ? ?
\
BY TOP OF BANK.
ZONE 1 IMPACT ZONE 1
ZONE 2 = 30'
= 20' N GRAPHIC SCALE
20 0 10 20
ZONE 2 IMPACT
WETLANDS
( IN FTET
1 inch = 20 ft,
DATE
DR4WNG
DO G FOR COI?STAUCTibIV
!.' Engineers
Rivers ro
Associates, Inc.
Since 1914
107 East 9eo0nd Street 6131 Falls of Neuse Road, Suite 300
Greenville, NC 17656 (252)7524135 Relei¢i, NC 27609 (919) 8483147
TRIANGLE ASSETS MANAGEMENT,LLC
CEDAR RIDGE SUBDMSION
STREAM AAD BW9ERWACT PLAN
CLAYTON 7DWSHIP, JOHNSTON COUNTY, NORTH CAROLINA
?1" = 20' AP0 726105.1 2 Mo:FL 6
250
250 1 1
245 1245
240 '11K I 11 --j I _-j 1240
1
1 11

2235 1 1 00 235

230 230

N
v
225 II
FINISHED GRADE o
N ?
i
? 225

220 220
O

2151 1 215

210 210

205 205

I CLASS 1 RIP RAP CLASS 1 RIP RAP 1 200
2001
195
195
9+00 9+50 10+00 10+50 11+00
PROGRESS DR?4WM
DO NOT (ISE FOR CONS71 W77aV
Engineers
I R
v Planners
Surveyors
Vvers
Associates, Inc.
Sinn 1978
107 East Semrd Steel 6131 Falls or Neuse Road, Suite 300
Greenville. NC 47858(252) 7524135 Ralegh. NC 27609 [phone]
GRAPHIC SCALE GRAPHIC SCALE TRIANGLE ASSETS MANAGEMEIVT,LLC
20 0 10 20 10 0 5 10 CEDAR RIDGE SURDINSIOIV
STIE" CROSSW PROF LE
IN FEET IN FEET CLAYTON TOWSN/P, JOHNSTON COUNTY, NORTH CAROUNA
1 inch = 20 ft. 1 inch = 10 ft DATE I- = 20' "-API'-M 261051 3 6
NORZ. y?T
I
I
I J I
?
I I
?
I I I
j I
I II I

? e
I
I e l Z ?
I ? I
d
U U W a
I ? ? ? O ?

I m
I ?
i I
l - ?
p
?
e I
h
IC ? I
e -` I
U I
? I i3
C

o o,
hs f
a
h n I
V. N O N, uio^ I
^ co ro .. v'O
N
Nv
O
I '?
?
I NI
±I e Q
II? ? QN I
y0 I u
? I
113 I
? *
? 1 „NOO
i
0
I
2
? (n ^ ~
I EX/SANGI GROUND AT
I
? OF DB
?. 4B" CMP I
I

I F
? PROJECTED EXlSAN6 80TTOM OF STREAM
INLET PROTECT/0N I
ERMANENT
I
PERMANENT OUTLET PROTEC110N
I

?
? ?
12'W. X 6'L. X 24"THK.

12'W. X 16Y. X 24"TNK. ?

j
I I __

I i I
I I I
248
246 --
244 = -- -
242 -
240 N
n
ao ?
238 N
T III
236 a
234
232 `
230
228 \
226
224
222 9
220
218
216
214
212
210
208
rn

18+50 19+00
248
p p ry y
`OW 'OfNT EI?EV = 220.02 246
- _ -_?_ ?_ -- - LOW_F INT ST ? 3
A--ST?=fit+0--
_244 ? _ - -EL-E r---214-. -,r ? --L - -- - --,?-- Q ° -244
A.D. 11.83
K = 3.80
24 T -? - 242
LO °o
-- - - -- -- 00. 0--Vr-----
° 240
- - cn 238
f
- - " 236
I ?
234
?h
232
o-? o
230
Nh? N N
'NN II H j ,,
228 228
\ a W
6' ATER IN
226
(G 9
w \ \ `
224
,
222
`
2201 220
(C-990 PVG 150)
218
2 \ 216
214
N,
?\ ,? 24+00 24+50 212
PROGRESS DR4WAG
® DBL 48" C P DO NOT LW FAR ?TK)1V
90 L . ® 11 /f) Engineers
Rivers Purneyre
Surveyors
918
19+50 20+00 20+50 21+00 21+50 22+00 22+50 23+00 23+50 aneet s Sloes,1w 1918
107 East Second Street 6131 Fels of Neuse Road, Bute 300
Greenville. NC 27858 [phone] Ralao,NC 27609 (919)848,9347
GRAPHIC SCALE GRAPHIC SCALE MIANCLE ASSETS MANAGEAIENT,LLC
5o 0 25 50 5 0 2.5 5 CEDAR RIDGE SUS&W.ON
t7l?IGf'1117 N/ri./17SWPROF X
( IN FEET) ( IN FEET) CLAYTON TCINNSN/P. JOHNSTON COUNTY, NORM CAROLINA
i inch = 50 f1~ 1 inch = 5 ft. SME ° Mm N0 ?E?T ND s?
DATE 1 " = 50' Dpi'-Afla01 26105.1 4 av 6
NORZ. VFR T
/ l l ?w
LOT J8
IMPACT AREA1 #i EXISTING
SEE SHEET 2 OF 5 DBL 54" RCP
APPROX.
0 / S77?EAM / 'EXISTING
EXISTING 8"
OPEN ?o?a- TOP OF NZ,
HEAD WALL / Jw
I ? SPACE E BANK SEWER
''?, ? r, moo. ??-,??? \ ??•,_r. S / l / ve EXISTING
o?F ???? ??? \ -- ?p `?-•---- 1• / ? AHEAD WALL
?°.
OPEN I/ 0 ?? ???I 1T !,
\ m ?? SPACE
,•- <-
? PROPOSED 8" SEWER
-r- - _ _ / EXISTING SANITARY
MANHOLE I ;
9POSED 20'j 8'? 8 S 8'S 8'S 8 S ?3" ' I 8 S
NER ESMT. \ Q EXIS7NG 20 SEWER EASEMENT / PRyA{E LOT DRIVEWAY
--(TOWN OF CLAYTON)
OPEN SPACE---_ W \ u
I I 21 o OPEN SPACE IMPACT AREA #2 ?-sEWER c 8
\_ 1 SANITARY OUIPALL N
ZONE 1 DISTURBED AREA = 2597 SF. \ \
r ZONE 2 DISTURBED AREA = 2383 SF.
LOT 25
\ LOT 8 FOREST GLENS SUBDIVISION
W
LEGEND
S7REAM IMPACT
ZONE 1 IMPACT
ZONE 2 IMPACT
WETLANDS

PB 50 - PG 221
PROGWSS DIRAWM
DO NOT Uaff FOR C AWRW7 C V
NOTE s
Pl
a
?
.
BUFFER ZONES ARE DETERMINED er
P
l
m
Rivers Surveyors

BY TOP
OF BANK. s"*'918
167 Fast Second Stied 6131 Falk of Neuse Road, Suite 300
ZONE 1 = 30' n 1 Greenville, NC 27856 [phone] RNefgh, NC 27609 [phone]
' I V GRAPHIC SCALE TRIANGLE ASSE7S TLLC
ZONE 2 = 20 30 0 15 30 CEDAR RIDGE SUBMSKIN
STREAM AM &R=B? A°ACT PLAN
IN FEET CLAYTgN TOW-941P, JOHNS70N COUNTY, NORM CAROLINA
1 inch = 30 ft
MU" Na.
srAI
T
I
5 Gr 6
1' = 20' DAB APP-M 26105. I

v.
"IMPACT AREA 414 IMPACT AREA 6
LEVEL SPREADER LS=33 & LS-55 LEVEL SPREADER LS-73
ZONE 1 DISTURBED AREA = 602 SF. ZONE 1 DISTURBED AREA = 855 SF.
" ' \\ \ ZONE 2 DISTURBED AREA = 720 SF. ZONE 2 DISTURBED AREA = 335 SF.
VA J ?
LS-33
l? O
O
LS-55
r/x
DBL 48 CMP ?J
90 LF. ®.11Z
HEAD WALL
IMPACT AREA 3 /- --? ;
n
LEVEL SPREADER LS-5
ZONE 1 DISTURBED AREA = 0 SF.
ZONE 2 DISTURBED AREA = 255 SF,
G J
i
Y/
t
................ ?
" t
1 APPROX.
\ /.. STREAM
• SON
a«s F 2
TOP OF
0 BANK
218
N GRAPHIC SCALE
zo o to 20
IMPACT AREA #5
( IN FEET) LEVEL SPREADER LS-1 - 2
i inch = 20 ft ZONE 1 DISTURBED AREA = 805 SF.
ZONE 2 DISTURBED AREA = 725 SF. PROGREW
---= DO NOT L FOR
LEGEND ?-- ! Engineers
NOTE ?- Divers Planners
STREAM IMPACT BUFFER ZONES ARE DETERMINED Associates, Inc.
$IIOB 1918
BY TOP OF BANK. 107 ,? ? x„52-4,? ??„'? , M ?°;? 300
ZONE 1 IMPACT ZONE 1 = 30' _ LS-13 7RfANGLf AssE7s MANAhNMfNT,uC
ZONE 2 = 20' CEDAR RIDGE SU801NSIM
ST1 AMAADW99ER AFACT PLAN
ZONE 2 IMPACT
aAYM TOWNSHIP, "NSTON COUN7Y, NORM CAROLINA
WETLANDS -1 one 96HE DRONIG NO. PNOJ= N0. %EET
LS
\ 1" = 20' WN-AW-M 26105.1 6 of 6
.1 WL CEDN?- ?!ODL t & i0 e S LI5 T i?q PP-A,,,JA-e-?
Page
Line
No. Inlet
ID Line
ID Flow
Rate
(cfs) Q
Capt
(cfs)• Invert
Up
(ft) Invert
Dn
(ft) Line
Length
(ft) Line
Size
(in) Line
Slope
(%) Gutter
Spread
(ft) Inlet
Loc Gnd/Rim
El Up
(ft) Drng
Area
(ac) Runoff
Coeff
(C) Depth
Dn
(ft) Vol
Dn
(ft/s)
1 56 56 to 55 15.83 5.08 228.50 227.00 105.01 24 1.43 11.17 Sag 233.49 1.23 0.60 1.11 8.85
2 60 60 to 56 2.73 0.64 232.00 229.25 98.22 15 2.80 4.00 On Grade 236.28 0.11 0.80 1.25 2.23
3 61 61 to 60 2.12 1.98 232.20 232.00 24.70 15 0.81 7.00 On Grade 236.28 0.42 0.70 0.88 2.29
4 56A 56A to 56 9.04 0.02 234.79 229.00 230.54 18 2.51 0.94 Sag 237.00 0.00 0.60 1.20 5.98
5 57 57 to 56A 9.19 1.26 244.00 234.79 139.50 18 6.60 6.00 On Grade 250.08 0.32 0.60 1.33 5.54
6 58 58 to 57 8.04 2.55 245.00 244.00 103.25 18 0.97 9.00 On Grade 249.71 0.80 0.60 1.45 4.60
7 59 59 to 58 4.89 4.89 246.00 245.25 49.64 15 1.51 10.67 Sag 250.98 1.22 0.60 1.12 4.21
8 34 34 to 33 27.44 1.15 224.00 223.00 45.67 24 2.19 4.50 On Grade 228.57 0.20 0.80 1.47 11.05
9 34A 34A to 34 25.76 0.19 230.00 224.00 130.00 24 4.62 2.00 On Grade 237.18 0.01 0.80 2.00 8.20
10 36 36 to 34A 25.91 2.00 236.40 232.50 119.37 24 3.27 7.00 On Grade 243.07 0.37 0.80 1.16 13.73
11 35 35 to 34 1.33 1.42 225.00 224.75 30.12 15 0.83 5.00 On Grade 228.57 0.23 0.80 1.25 1.08
12 38 38 to 36 23.33 1.28 247.15 236.40 355.53 24 3.02 5.50 On Grade 253.76 0.10 0.65 2.00 7.43
13 40 40 to 38 22.82 2.74 252.00 248.75 137.00 24 2.37 9.50 On Grade 257.18 0.63 0.55 1.18 11.79
14 42 42 to 40 20.04 2.86 258.00 252.00 230.54 24 2.60 7.00 On Grade 264.69 0.71 0.65 2.00 6.38
N
15 48 48 to 42 8.18 0.87 270.00 259.50 136.70 18 7.68 3.50 On Grade 274.79 0.15 0.80 0.63 11.67
C:?
16 50 50 to 48 6.68 0.35 284.50 270.00 176.00 18 8.24 2.00 On Grade 290.28 0.06 0.80 1.42 3.87
17 53 53to 50 1.03 0.76 292.00 284.75 96.71 15 7.50 4.00 On Grade 296.50 0.15 0.70 1.18 0.86 --4
O
18 54 54 to 53 0.35 0.35 292.20 292.00 31.56 15 0.63 2.50 On Grade 296.99 0.06 0.80 0.50 0.76
19 39 39to 38 0.46 0.50 249.70 249.51 28.79 15 0.66 3.50 On Grade 253.76 0.08 0.80 0.38 1.45
co
20 41 41 to 40 1.41 1.37 253.00 252.75 28.36 15 0.88 6.50 On Grade 257.18 0.28 0.70 1.25 1.15 N
21 43 43 to 42 1.14 1.14 260.00 259.75 27.58 15 0.91 4.50 On Grade 264.69 0.21 0.75 0.70 1.61
Cedar Ridge 10 year Number of lines: 54 Date: 01-19-2007
NOTES: -Critical depth
Hydraflow Storm Sewers 200
J'WL
Page :
Line
No. Inlet
ID Line
ID Flow
Rate
(Cfs) Q
Capt
(Cfs) Invert
Up
(ft) Invert
Dn
(ft) Line
Length
(ft) Line
Size
(in) Line
Slope
(%) Gutter
Spread
(ft) Inlet
Loc Gnd1Rim
El Up
(ft) Drng
Area
(ac) Runoff
Coeff
(C) Depth
Dn
(ft) Val
Dn
(ft/s)
22 44 44 to 42 8.53 3.63 259.50 259.00 45.34 18 1.10 9.00 On Grade 263.67 0.80 0.60 1.10 6.15
23 45 45 to 44 0.29 0.29 260.00 259.75 26.93 15 0.93 2.50 On Grade 263.62 0.06 0.70 1.25 0.24
24 49 49 to 48 1.10 1.10 270.50 270.25 29.92 15 0.84 4.00 On Grade 274.79 0.19 0.80 1.25 0.89
25 51 51 to 50 5.49 0.29 287.50 284.75 69.69 18 3.95 3.50 On Grade 292.88 0.07 0.60 1.04 4.18
26 52 52 to 51 5.29 5.29 288.00 287.50 62.00 18 0.81 11.67 Sag 292.32 1.49 0.55 1.14 3.66
27 46 46 to 44 5.48 4.20 264.80 260.00 83.19 15 5.77 9.00 On Grade 269.58 1.34 0.60 0.87 5.98
28 47 47 to 46 0.69 0.69 265.20 264.80 38.50 15 1.04 3.50 On Grade 269.58 0.20 0.55 1.25 0.56
29 37 37 to 36 1.92 1.83, 238.00 237.15 30.05 15 2.83 6.50 On Grade 243.07 0.38 0.70 1.25 1.56
30 2 2 to 1 23.22 0.84 231.74 228.00 143.00 30 2.62 4.00 On Grade 237.76 0.18 0.70 1.04 12.06
31 3 3 to 2 22.67 0.58 231.93 231.74 24.78 30 0.77 3.50 On Grade 237.70 0.15 0.60 2.03 5.31
32 5-DI 5 to 3 19.83 4.91 233.17 231.93 118.25 30 1.05 10.64 Sag 236.00 1.13 0.65 2.50 4.04
33 6 6 to 5 16.72 0.30 234.44 233.17 212.13 30 0.60 2.50 On Grade 241.39 0.07 0.65 2.27 3.56
34 7 7 to 6 16.54 2.93 234.62 234.44 24.73 30 0.73 8.00 On Grade 241.39 0.96 0.55 1.77 4.46
35 10 10 to 7 8.90 0.84 240.00 235.12 199.55 24 2.45 -0.17 Sag 246.00 0.29 0.40 1.97 2.84
36 11 11 to 10 8.37 0.12 241.50 240.50 44.23 24 2.26 -2.17 Sag 247.00 0.33 0.05 0.88 6.28
37 12 12 to 11 8.29 8.29 243.50 242.00 7.25 24 20.69 .... Sag 246.00 2.66 0.60 0.83 6.72
38 8 8 to 7 7.07 6.85 235.60 235.20 75.50 24 0.53 15.67 Sag 240.10 1.59 0.60 1.88 2.31
39 9 9 to 8 0.75 0.75 236.50 236.35 24.73 15 0.61 -0.42 Sag 240.10 0.13 0.80 1.05 0.68
40 4 4 to 3 3.69 3.16 236.00 233.18 63.35 15 4.45 8.00 On Grade 240.55 0.85 0.65 1.25 3.01
41 14 14 to 13 12.60 0.67 224.20 224.00 31.40 24 0.64 3.50 On Grade 229.76 0.11 0.85 1.26 6.06
42 15 15 to 14 12.06 2.44 224.40 224.20 24.73 24 0.81 7.00 On Grade 229.76 0.66 0.60 08 4.08
Cedar Ridge 10 year Number of lines: 54 Date: 01-19-2007
NOTES: "Critical depth
Hydraflow Storm Sewers 200
JWL
Page :
Line
No. Inlet
ID Line
ID Flow
Rate
(cfs) Q
Capt
(cfs) Invert
Up
(ft) Invert
Dn
(ft) Line
Length
(ft) Line
Size
(in) Line
Slope
(%) Gutter
Spread
(ft) Inlet
Loc Gnd/Rim
El Up
(ft) Drng
Area
(ac) Runoff
Coeff
(C) Depth
Dn
(ft) Vel
Dn
(ft/s)
43 17 17 to 15 8.92 2.80 225.15 224.90 47.24 18 0.53 7.50 On Grade 230.28 0.79 0.60 1.50 5.05
44 18 18 to 17 5.97 1.78 225.30 225.15 28.73 18 0.52 6.00 On Grade 230.28 0.38 0.60 1.50 3.38
45 19 19 to 18 4.68 2.33 234.00 225.55 214.28 15 3.94 7.00 On Grade 239.35 0.53 0.65 1.25 3.81
46 20 20 to 19 0.38 0.38 238.00 234.00 51.68 15 7.74 2.50 On Grade 253.02 0.08 0.65 1.25 0.31
47 21 21 to 19 2.25 1.68 239.00 234.00 121.47 15 4.12 6.00 On Grade 244.49 0.36 0.65 1.23 1.84
48 22 22 to 21 0.65 0.65 239.50 239.00 32.59 15 1.53 4.00 On Grade 243.85 0.15 0.60 0.83 0.75
49 16 16 to 15 0.82 0.82 230.00 225.15 86.54 15 5.60 4.00 On Grade 235.66 0.19 0.60 1.25 0.67
50 27 27 to 26 3.48 1.07 215.20 214.50 31.72 15 2.21 5.00 On Grade 221.54 0.18 0.80 0.54 6.86
51 28 28 to 27 2.56 0.87 215.70 215.20 97.13 15 0.51 -0.17 Sag 220.14 0.15 0.80 1.00 2.43
52 29 29 to 28 1.73 1.94 215.85 215.70 28.73 15 0.52 2.17 Sag 220.14 0.30 0.80 1.18 1.45
53 31 31 to 30 1.00 0.46 215.00 214.00 33.57 15 2.98 3.00 On Grade 222.20 0.08 0.80 0.26 5.51
54 32 32 to 31 0.58 0.58 218.00 217.00 28.73 15 3.48 3.50 On Grade 222.20 0.10 0.80 0.19 5.01
Cedar Ridge 10 year Number of lines: 54 1 Dai0l-19-2007
NOTES: " Critical depth
Hydraflow Storm Sewers 200
t
e

Cedar Ridge 1/16/2007
Rivers and Assoc., Inc. 1 2
FES - 1
LEVEL SPREADER CALCULATIONS
DRAINAGE AREA = 9.38 ACRES
RUNOFF CHARACTERISTICS
C = 0.58; FROM SYSTEM CALCS
Tc= 18.311' MIN FROM SYS CALCS
110= 4.84 IN/HR
11 = 1 IN/HR
Q10 = 26.3 CFS Q10=CI10A
QLS = 5.4 CFS QLS=CIIA
QBP = 20.9 CFS QBP=Q1o-QLs
LS LENGTH MINIMUM=
LS DESIGN LENGTH =
LS MAX FLOW =
BYPASS NEEDED ?
70.7252 LF AS x 13)
120 LF (FROM PLAN)
9.2 CFS (DESIGN U13)
YES
Impervious Cover 2.4388 Ac.
Forebay size req'd 0.0049 Ac.
0.2% of I.C. 212.5 S.F.
KV6015.1 - Cedar Ridge - Triangle Assest\ADMiMK - Design Data1LEVEL SPREADERS WITH BYPASS.xIs
DWQ Project No.
DIVISION OF WATER QUALITY - LEVEL SPREADER WORKSHEET (111007)
PROJECT INFORMATION
Project Name : 4 -?.Z; <
Contact Person:
Level Spreader ID: - O!
complete the following information):
Level Spreader Length ao ft.
Drainage Area -7.30 ac.
Impervious Area 2 . N ?f ac.
Forebay Area ?j ?}+.?'ftZ
Maximum Fitter Strip/Buffer Slope %
grass
Max. Discharge from 1'Mr Storm 5 • cis
Max. Discharge to Level Spreader 9. Z cfs
Filter Strip/ Zone 2 Buffer Vegetation 6, R A5 S
Pre-treatment or Bypass Method Used 5 S
REQUIRED ITEMS CHECKLIST
Phone Number:
(perpendicular to flow)
(on-site and off-site drainage to the level spreader)
(on-site and off-site drainage to the level spreader)
(0.2% of the contributing impervious surface area)
(6% for forested, leaf littler cover, 8% for thick ground cover
(thick ground cover or grass; canopied forest with leaf litter
groundcover)
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. ff a
regrirement has not been met, attach an explanation of why. At a minimum, a complete sto mwater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for
additional information and will substantially delay final review and approval of the project.
Applicants Initials
Project Site was visited prior to designing level spreader.
Z? . Date of the Sit- visit. PLEASE ATTACH TIME-DATED DIGITAL PHOTO OF EXISTING BUFFER CONDITIONS.
Level spreader is at least 13 ft per cfs for thick ground cover or grass or 65 ft per cfs in canopied forest with Icef
litter for 50-1oot buffer; 50 ft per cfs for 1004oot buffer, or 40 ft. per cis for 1504oot buffer.
Pre-Famed Scour Holes are on flat slopes only.
No structures are located in protected buffers (must meet no practical alternatives criteria).
Design Alternative (ff any) and Bypass method used:
1) Bypass conveyance method is specified and plan details and calculations are provided.
design option is specified and plan details and calculations are provided.
to level spreader and subsequent filter strip is hydraulically and spatially separate from the bypass
discharge.
No structures are located in protected buffers.
Plan details for the bypass and outlets are provided.
The operation and maintenance agreement includes annual erosion and vegetation repair.
operation and maintenance agreement signed and notarized by the responsible party is provided.
a
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FES-01 LSW-Ql.tXt
orifice calculator
Given Input Data:
Solving for .....................
coefficient .....................
Diameter ................
Headwater ..................
Tailwater .......................
Computed Results:
Flowrate ..........
velocity ........................
Flowrate
0.6100
?' O? i G ]7 ictw? a -E-e Q
12.0000 in
6.0001 in
0.0000 in 2.7175 cfs4- M4,<, FIvvr {o Level Sp e
3.4601 fps be-k q-e
Z.je? S(K2? 5,gCF6
* (Z) OQ t F6 C,e 6 W 1 L4 SE 06f.11:>-
Page 1
FES-01 LSW-Qmax.txt
orifice calculator
Given Input Data:
solving for ..................... Flowrate
coefficient ..................... 0.6100 .o?' ??r?¢?
Diameter ........................ 12.0000 in
Headwater ....................... 17.2000 in r +11,M 2.
Tailwater ....................... 0.0000 in
computed Results:
Flowrate ........................ 4.6011 cfs to A K ato
velocity ........................ 5.8583 fps
tor- (Z) Dori f ?c4-s
( 2)x 4.4 Z- q,Zc
a,,2, * 1 .` Zl ?r-s > 26,3c Fs
LS) . ( Gt,a)
Page 1
FES-01 BPW.tXt
weir calculator
Given Input Data:
weir Type .......................
Equation ......................
solving for .....................
Depth of Flow ...................
coefficient .....................
Height ..........................
Rectangular
suppressed
F1 overate
11. 2000 i n @ ypat'6 We-fR,
0.6000
25.0000 in
computed Results:
Flowrate ........................
Full Flow .......................
velocity ........................
width ...........................
Area ...........................
Perimeter ......................
Wet Perimeter ...................
Wet Area ......... .......
Percent Full ..... .......
17.3594 cfs A--FIOW $ Ag VJ?ti?. > Qto
57.8918 cfs
3.0999 fps
72.0000 in -47- jai PCL5s W G Ir I-ee
12.5000 ft2
122.0000 in
94.4000 in
5.6000 ft2
44.8000 %
?.,Z + 1,T. 4 , 2 6.6 cis > 26.3 e.v:?s
LS? CS1'? CQ?n?
Page 1
ECDesign® 2003 Channel Analysis Report
Project Information Last Update: 1/18/2007 2:30:07 PM
Project Name: Cedar Ridge
Description: Bypass Channels
City Raleigh State: NC Units: English
Notes:
Channel Design
Channel Name: FES 1 Units: English Design Life: 12 months
Design Criteria Vegetation and Soil Channel Geometry Flow/Velocity

Flow Rate (Q) Vegetated Yes Bed Slope (ft/ft) 0.0972 Discharge (cf/s) 17.4
Vegetation Class C Req. Freeboard (ft) Flow Duration (hrs) 1
Soil Filled No Channel Length (ft) 133.81 Avg. Velocity (ft/s) 4.35

Channel Side Slopes
Channel Bend false Bottom Width (ft)
Required Factor of Safety
Left (11:1 V) 2 Bend Radius (ft) 0 Channel Depth (ft) 5 1
Right (HA V) 2 Outside Bend
Results Avg. Flow Depth (ft): 0.68
V elocity (ft/s) Shear Stress (lb s/sgft) Pass Quantity

Lining Materials
Computed Maximum
Allowed Safety
Factor
Computed Maximum
Allowed Safety
Factor.
(SY)
Left LANDLOK TRM 435 4.160 16.490 3.960 3.200 4.700 1.470 Y 166.210
Bottom LANDLOK TRM 435 4.720 16.490 3.490 4.120 4.700 1.140 Y 59.470
Right LANDLOK TRM 435 4.160 16.490 3.960 3.200 4.700 1.470 Y 166.210
Calculation Results
Flow Depth (ft)
0.680
Left Wetted Perimeter (ft)
1.520
Flow Area (ft)
3.640
Bottom Wetted Perimeter (ft)
4.000
Right Wetted Perimeter (ft) 1.520
Total Wetted Perimeter (ft) 7.040
Hydraulic Radius (ft) 0.520 Avg. Velocity (ft(s) 4.350
Composite In, 0.0635 Avg. Discharge (cf/s) 17.400
EC-DESIGN® 2003 page 1 1/18/2007
ECDesign® 2003 Channel Analysis Report
Project Information Last Update: 1/18/2007 2:30:07 PM
Project Name: Cedar Ridge
Description: Bypass Channels
City: Raleigh State: NC Units: English
Notes:
I Channel Design I
Channel Name: FES 1 Units: English Design Life: 12 months
Design Criteria Vegetation and Soil Channel Geometry Flow/Velocity
Flow Rate (Q) Vegetated Yes Bed Slope (ft/ft) 0.0972 Discharge (cf/s) 17.4
Vegetation Class C Req. Freeboard (ft) Flow Duration (hrs) I
Soil Filled No Channel Length (ft) 133.81 Avg. Velocity (ft/s) 4.35
Channel Side Slopes Channel Bend false Bottom Width (ft) 4 Required Factor of Safety
Left (HA V) 2 Bend Radius (ft) 0 Channel Depth (ft) 5 1
Right (HA V) 2 Outside Bend
Results Avg. Flow Depth (ft): 0.68
Velocity (ft/s) Shear Stress (lbs/sgft) Pass Quantity

Lining Materials
Computed Maximum
Allowed Safety
Factor
Computed Maximum
Allowed Safety
Factor
(SY)
Left LANDLOK TRM 435 4.160 16.490 3.960 3.200 4.700 1.470 Y 166.210
Bottom LANDLOK TRM 435 4.720 16.490 3.490 4.120 4.700 1.140 Y 59.470
Right LANDLOK TRM 435 4.160 16.490 3.960 3.200 4.700 1.470 Y 166.210
Calculation Results -
Flow Depth (ft) 0.680 Left Wetted Perimeter (ft) 1.520
Flow Area (ft) 3.640 Bottom Wetted Perimeter (ft) 4.000
Right Wetted Perimeter (ft) 1.520
Total Wetted Perimeter (ft) 7.040
Hydraulic Radius (ft) 0.520 Avg. Velocity (ft/s) 4.350
Composite In' 0.0635 Avg. Discharge (cf/s) 17.400
EC-DESIGN® 2003 page 1 1/18/2007
C61dar Ridge 1/16/2007
Rivers and Assoc., Inc. 0 1 9 2
I FES - 13
LEVEL SPREADER CALCULATIONS
DRAINAGE AREA = 4.12 ACRES
RUNOFF CHARACTERISTICS
C = 0.63 FROM SYSTEM CALCS
Tc= 9.10 MIN FROM SYS CALCS
110= 6.27 IN/HR
11 = 1 IN/HR
Q10 = 16.3 CFS Q10=CI10A
QLS = 2.6 CFS QLs=CI1A
QBP = 13.7 CFS QBP=Q1o-QLS
LS LENGTH MINIMUM 33.7428 LF As x 13)
LS DESIGN LENGTH = 90, LF (FROM PLAN)
LS MAX FLOW = 6.9 CFS (DESIGN U13)
BYPASS NEEDED ? YES
Impervious Cover 1.4832 Ac.
Forebay size req'd 0.0030 Ac.
0.2% of I.C. 129.2 S.F.
KA26015.1 - Cedar Ridge - Triangle AssestWDMINIK - Design Data\LEVEL SPREADERS WITH BYPASS.xis
DWQ Project No.,
DIVISION OF WATER QUALITY - LEVEL SPREADER WORKSHEET (112007)
1. PROJECT INFORMATION lease complete the following information):
Project Name : R ,L /DG'fF
Contact Person: _AV 1J -151W/ 7-,?/ `Z" Phone Number:
Level Spreader ID: FE5 /3
Level Spreader Length 90 ft.
Drainage Area Y. IZ ac.
Impervious Area /. cif S ac.
Forebay Area '$l 14* ad ft.2
Maximum Filter Ship/Buffer Slope $ %
grass
Max. Discharge from 1'Mr Storm 2.6 cFs
Max. Discharge to Level Spreader cfs
Filter Strip/ Zone 2 Buffer Vegetation /2,eA55
Pre-treatment or Bypass Method Used S
II. REQUIRED ITEMS CHECKLIST
(perpendicular to flow)
(on-site and oft-site drainage to the level spreader)
(on-site and off-site drainage to the level spreader)
(0.2% of the contributing impervious surface area)
(6% for forested, leaf littler cover, 8% for thick ground cover
(thick ground aver or grass; canopied forest with leaf litter
groundcover)
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a
requirement has not been met attach an explanation of why. At a minimum, a complete stonnwater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for
additional information and will substantially delay final review and approval of the project.
ADWicants4nifials
Project Site was visited prior to designing level spreader.
Date of the Site visit. PLEASE ATTACH TIME-DATED DIGITAL PHOTO OF EXISTING BUFFER CONDITIONS.
Level spreader is at least 13 ft. per cfs for thick ground cover or grass or 65 ft per cfs in canopied forest with leaf
litter for 50-foot buffer; 50 ft per cfs for 100 foot buffer, or 40 ft. per cis for 150-foot buffer.
pi, 44- Pre-Formed Scour Holes are on flat slopes only.
1 No structures are located in protected buffers (must meet no practical alternatives criteria).
Design Alternative (if any) and Bypass method used:
Bypass conveyance method is specified and plan details and calculations are provided.
Alternative design option is specified and plan details and calculations are provided.
Discharge to level spreader and subsequent filter strip is hydraulically and spatially separate from the bypass
discharge.
No structures are located in protected buffers.
Plan details for the bypass and outlets are provided.
The operation and maintenance agreement includes annual erosion and vegetation repair.
The operation and maintenance agreement signed and notarized by the responsible party is provided.
��s i3
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l-l6-Z007 - -.-
FES-13 LSW-Q1.txt
orifice calculator
Given Input Data:
solving for ..................... Flowrate
coefficient 0.6100
Diameter ........................ 12.0000 in '4- ?-s 02?FlLE ?ia?eG(Z
Headwater ....................... 6.0001 in w?e? L-S oc-;-C;c-e
Tailwater ....................... 0.0000 in A BisS vVe-e2 . OV r-
Computed Results:
Flowrate ............. .......... 2.7175 cfs 4 (AAX. F lo,/ +v ? ev6l gr-eader
velocity 3.4601 fps Joe.-loav, '%t=s!n
Page 1

FES-13 LSW-Qmax.txt
orifice calculator
Given Input Data:
solving for ..................... Flowrate
coefficient ..................... 0.6100
Diameter ........................ 12.0000 in LS orifice Diameter
Headwater ....................... 14.5000 in 6" + 8.5" = 14.5"
Tailwater ....................... 0.0000 in
computed Results:
Flowrate ........................ 4.2246 cfs max Q10 flow
velocity ........................ 5.3789 fps 4.2 + 11.5 = 15.7 cfs - 16.3
cfs
Page 1

FES-13 BPW.txt
weir calculator
Given Input Data:
weir Type ....................... Rectangular
Equation ........................ Suppressed
solving for ..................... Flowrate
Depth of Flow ................... 8.5000 in Depth of flow at bypass weir
coefficient ..................... 0.6000
Height .......................... 25.0000 in
computed Results:
Flowrate ....
Full Flow ...
velocity ....
width .......
Area ........
Perimeter ...
wet Perimeter
Wet Area .
Percent Full
11.4772 cfs Flow at bypass weir
57.8918 cfs
2.7005 fps
72.0000 in Bypass flow length
12.5000 ft2
122.0000 in
89.0000 in
4.2500 ft2
34.0000 %
Page 1
ECDesign® 2003 Channel Analysis Report

I Project Information Last Update: 1/18/2007 2:34:41 PM
Project Name: Cedar Ridge
Description: Bypass Channels
City: Raleigh
Notes:
State: NC
Units: English
Channel Design
Channel Name: FES 13 Units: English Design Life: 1200 months
Design Criteria Vegetation and Soil Channel Geometry Flow/Velocity
Flow Rate (Q) Vegetated Yes Bed Slope (ft/ft) 0.05 Discharge (cf/s) 11.5
Vegetation Class C Req. Freeboard (ft) Flow Duration (hrs) 1
Soil Filled No Channel Length (ft) 159.77 Avg. Velocity (ft/s) 2.64
Channel Side Slopes Channel Bend false Bottom Width (ft) 5 Required Factor of Safety
Left (HA V) 2 Bend Radius (ft) 0 Channel Depth (ft) 5 1
Right (HA V) 2 Outside Bend
Results Avg. Flow Depth (ft): 0.65
Velocity (ft/s) Shear Stress (Ibs/sgft) Pass Quantity
Limn Materials
Lining
Computed Maximum
Allowed Safety
Factor
Computed Maximum
Allowed Safety
Factor
(SY)
Left LANDLOK TRM 435 2.530 16.490 6.520 1.590 4.700 2.960 Y 198.460
Bottom LANDLOK TRM 435 2.860 16.490 5.770 2.040 4.700 2.300 Y 88.750
Right LANDLOK TRM 435 2.530 16.490 6.520 1.590 4.700 2.960 Y 198.460
Calculation Results
Flow Depth (ft) 0.650 Left Wetted Perimeter (ft) 1.460
Flow Area (ft) 4.120 Bottom Wetted Perimeter (ft) 5.000
Right Wetted Perimeter (ft) 1.460
Total Wetted Perimeter (ft) 7.920
Hydraulic Radius (ft) 0.520 Avg. Velocity (ft/s) 2.640
Composite 'n' 0.0755 Avg. Discharge (cf/s) 11.500
EC-DESIGNS 2003 page 1 1/18/2007
ECDesign® 2003 Channel Analysis Report
I Project Information Last Update: 1/19/2007 10:00:00 AM
Project Name: Cedar Ridge
Description: Bypass Channels
City: Raleigh
Notes:
State: NC Units: English
Channel Design
Channel Name: FES 13 pre Units: English Design Life: 1200 months
Design Criteria Vegetation and Soil Channel Geometry Flow/Velocity
Flow Rate (Q) Vegetated Yes Bed Slope (ft/ft) 0.028 Discharge (cf/s) 16.3
Vegetation Class C Req. Freeboard (ft) Flow Duration (hrs) 1
Soil Filled No Channel Length (ft) 70 Avg. Velocity (ft/s) 2.57
Channel Side Slopes Channel Bend false Bottom Width (ft) 4 Required Factor of Safety
Left (HA V) 2 Bend Radius (ft) 0 Channel Depth (ft) 5 1
Right (HA V) 2 Outside Bend
Results Avg. Flow Depth (ft): 0.97
Velocity (ft/s) Shear Stress (lbs/sgft) Pass Quantity
Lining Materials computed Maximum
Allowed Safety
Factor Computed Maximum
Allowed Safety
Factor
(SY)
Left LANDLOK TRM 435 2.460 16.490 6.700 1.340 4.700 3.510 Y 86.950
Bottom LANDLOK TRM 435 2.780 16.490 5.930 1.700 4.700 2.760 Y 31.110
Right LANDLOK TRM 435 2.460 16.490 6.700 1.340 4.700 3.510 Y 86.950
Calculation Results - -
Flow Depth (ft) 0.970 Left Wetted Perimeter (ft) 2.180
Flow Area (ft) 5.790 Bottom Wetted Perimeter (ft) 3.990
Right Wetted Perimeter (ft) 2.180
Total Wetted Perimeter (ft) 8.350
Hydraulic Radius (ft) 0.690 Avg. Velocity (ft/s) 2.570
Composite In' 0.0705 Avg. Discharge (cf/s) 16.300
EC-DESIGNO 2003 page 1 1/19/2007

Cedar Ridge
Rivers and Assoc., Inc.
1/16/2007
FES - 26
LEVEL SPREADER CALCULATIONS
DRAINAGE AREA = 1.38 ACRES
RUNOFF CHARACTERISTICS
C = 0.61 FROM SYSTEM CALCS
Tc= 6:10 MIN FROM SYS CALCS
110= 6.94 IN/HR
11 = 1 IN/HR
Q10 = 5.8 CFS 010=CI10A
QLS = 0.8 CFS QLS=CIIA
QBP = 5.0 CFS QBP=Q10'QLS
LS LENGTH MINIMUM = 10.9434 LF (Qt_s x 13)
LS DESIGN LENGTH = 80 LF (FROM PLAN)
LS MAX FLOW = 6.2 CFS (DESIGN t/13)
BYPASS NEEDED ? NOT NEEDED
Impervious Cover 0.4416 Ac.
Forebay size req'd 0.0009 Ac.
0.2% of I.C. 38.5 S.F.
K:\26015.1 - Cedar Ridge - Triangle Assest\ADMIMK - Design Data\LEVEL SPREADERS WITH BYPASS.xis
DWQ Project
DIVISION OF WATER QUALITY - LEVEL SPREADER WORKSHEET (112007)
1. PROJECT INFORMATION lease complete the following information):
Project Name : .:4 R ?/pG?
Contact Person: -V,{V IZ> 5`YI/ Tfl fZ' Phone Number:
Level Spreader ID: frE5 26
Level Spreader Length 0 4 ft. (perpendicular to flow)
Drainage Area . 36 ac. (on-site and off-site drainage to the level spreader)
Impervious Area O • ac. (on-site and of( site drainage to the level spreader)
Forebay Area Zff- a ft.Z (0.2% of the contributing impervious surface area)
Maximum Filter Strip/Buffer Slope 8 % (6% for forested, leaf littler cover, 8% for thick ground cover
grass
Max. Discharge from 1'Mr Storm 0.15 cfs
Max. Discharge to Level Spreader 6.2 cfs
Filter Strip/ Zone 2 Buffer Vegetation 6R.4S S (thick ground cover or grass; canopied forest with Icef litter
groundkover)
Pre-treatment or Bypass Method Used *tew I
REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a
regrarement has not been met; affach an e)#a?atlon of why. At a minimum, a complete stomnwatier management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for
additional information and will substantially delay final review and approval of the project.
ADDlicants itials
Project Site was visited prior to designing level spreader.
Date of the Site visit. PLEASE ATTACH TIME-DATED DIGITAL PHOTO OF EXISTING BUFFER CONDITIONS.
.-C& JbJ192 Level spreader is at least 13 ft. per cfs for thick ground cover or grass or 65 ft per cfs in canopied forest with leaf
litter for 50-foot buffer; 50 ft per cfs for 100 foot buffer, or 40 ft per cfs for 1504bot buffer.
Pre-Formed Scour Holes are on flat slopes only.
No structures are located in protected buffers (must meet no practical altematives criteria).
Design Altemative (if any) and Bypass method used:
Bypass conveyance method is specified and plan details and calculations are provided.
design option is specified and plan details and calculations are provided.
Discharge to level spreader and subsequent filter strip is hydraulically and spatially separate from the bypass
discharge.
No structures are located in protected buffers.
Plan details for the bypass and outlets are provided.
The operation and maintenance agreement includes annual erosion and vegetation repair.
AJ /A The operation and maintenance agreement signed and notarized by the responsible party is provided.
?e, 26
.*
Cedar Ridge
Rivers and Assoc., Inc.
FES - 30-1
1 2 1/16/2007
LEVEL SPREADER CALCULATIONS
DRAINAGE AREA = 0.46 ACRES
RUNOFF CHARACTERISTICS
C = 0.70 FROM SYSTEM CALCS
Tc= -6.00 - MIN FROM SYS CALCS
110= 6.96 IN/HR
11 = 1 IN/HR
Q10 = 2.2 CFS Q10=CI10A
QLS = 0.3 CFS QLS=CIIA
QBP = 1.9 CFS QBP=Q10-QLS
LS LENGTH MINIMUM=
LS DESIGN LENGTH =
LS MAX FLOW
BYPASS NEEDED ?
4.186 LF (QLS x 13)
43 LF (FROM PLAN)
3.3 CFS (DESIGN U13)
NOT NEEDED
Impervious Cover 0.23 Ac.
Forebay size req'd 0.0005 Ac.
0.2% of I.C. 20.0 S.F.
K:126015.1 - Cedar Ridge - Triangle AssestWDMIMK - Design Data\LEVEL SPREADERS WITH BYPASSids
DWQ Project
DIVISION OF WATER QUALITY - LEVEL SPREADER WORKSHEET (112007)
1. PROJECT INFORMATION lease complete the following information):
Project Name : P'/.7>6zF
Contact Person: TWA! ?SyyJ/ T?/ AK ?' Phone Number.
Level Spreader ID: FES 3o
Level Spreader Length y3 ft.
Drainage Area o- 6 ac.
Impervious Area O. 23 ac.
Forebay Area 6?ED an ft.L
Maximum Filter Strip/Buffer Slope
grass
(perpendicular to Clow)
(on-site and off-site drainage to the level spreader)
(on site and off-site drainage to the level spreader)
(0.2% of the contributing impervious surface area)
(6% for forested, leaf littler cover, 8% for thick ground cover
Max. Discharge from 1"Mr Storm o. 3 cfs
Max. Discharge to Level Spreader S. 1 cis
Filter Strip/ Zone 2 Buffer Vegetation G RA5S (thick ground cover or grass; canopied forest with Icef litter
'M feh.'+do codip- groundcover)
Pre-treatment or Bypass Method Used Pl'e
REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. /f a
requirement has not been met, attach an explanation of why. At a minimum, a complete stormu ater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for
additional information and will substantially delay final review and approval of the project.
Awlicants initials
Project Site was visited prior to designing level spreader.
V' Date of the Site visit. PLEASE ATTACH TIME-DATED DIGITAL PHOTO OF EXISTING BUFFER CONDITIONS.
Level spreader is at least 13 fL per cis for thick ground cover or grass or 65 ft per cfs in canopied forest with Icef
litter for 50-foot buffer; 50 ft per cis for 100-foot buffer, or 40 ft. per cis for 1504oot buffer.
Pre-Farmed Scour Holes are on flat slopes only.
No structures are located in protected buffers (must meet no practical alternatives criteria).
Design Alternative (d any) and Bypass method used:
1414 Bypass conveyance method is specified and plan details and calculations are provided.
Alternative design option is specified and plan details and calculations are provided.
Discharge to level spreader and subsequent filter strip is hydraulically and spatially separate from the bypass
discharge.
No structures are located in protected buffers.
4 4 Plan details for the bypass and outlets are provided.
The operation and maintenance agreement includes annual erosion and vegetation repair.
The operation and maintenance agreement signed and notarized by the responsible party is provided.
Cedar Ridge
Rivers and Assoc., Inc.
FES - 33-?
2 0 0 0 1 9 2 1/16/2007
VEL SPREADER CALCULATIONS
LAINAGE AREA = 8.37 ACRES
INOFF CHARACTERISTICS
C = 0.62 FROM SYSTEM CALCS
Tc= 12.90 MIN FROM SYS CALCS
110= 5.59 IN/HR
11 = 1 IN/HR
Q10 = 29.0 CFS Q1o=CI10A
QLS = 5.2 CFS QLs=CI1A
QBP = 23.8 CFS QBP=Q10"QLS
LS LENGTH MINIMUM =
LS DESIGN LENGTH =
LS MAX FLOW =
BYPASS NEEDED?
67.4622 LF AS x 13)
100 LF (FROM PLAN)
7.7 CFS (DESIGN U13)
YES
Impervious Cover 2.8458 Ac.
Forebay size req'd 0.0057 Ac.
0.2% of I.C. 247.9 S.F.
K:\26015.1 - Cedar Ridge - Triangle Assest\ADMIMK Design Data\LEVEL SPREADERS WITH BYPASS.xls
DWQ Project
DIVISION OF WATER QUALITY - LEVEL SPREADER WORKSHEET (112007)
1. PROJECT INFORMATION lease complete the following information):
Project Name : -i?
Contact Person: _AV f 1J Si?YI/Jf/ Phone Number:
Level Spreader ID: FES 33
Level Spreader Length /00 ft.
Drainage Area $ • 3 7 ac.
Impervious Area :2.64 ac.
Forebay Area 312 W ft. -
Maximum Filter Strip/Buffer Slope S %
grass
Max. Discharge from 1 "Mr Storm Jr 2 cfs
Max. Discharge to Level Spreader ?.? cis
Filter Strip/ Zone 2 Buffer Vegetation GRA55
(perpendicular to flow)
(on-site and off-site drainage to the level spreader)
(on-site and off-site drainage to the level spreader)
(0.2% of the contributing impervious surface area)
` (6% for forested, leaf littler cover, 8% for thick ground aver
(thick ground cover or grass; canopied forest with leaf litter
groundcover)
Pre-treatment or Bypass Method Used S 5
REQUIRED ITEMS CHECKLIST
Initial in the space provided b indicate the following design requirements have been met and supporting documentation is attached. If a
requirement has not been met, attach an explanation of why. At a minimum, a complete stomnaater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for
additional information and will substantially delay final review and approval of the project.
ADDliCNtS itials
Project Site was visited prior to designing level spreader.
Date of the Site visit. PLEASE ATTACH TIME-DATED DIGITAL PHOTO OF EXISTING BUFFER CONDITIONS.
ffi?'??i-evel spreader is at least 13 ft. per cfs for thick ground cover or grass or 65 ft per cis in canopied forest with Ieaf
litter for 50-foot buffer, 50 ft per cfs for 100-foot buffer, or 40 fl per cis for 1504oot buffer.
Pre-Formed Scour Holes are on flat slopes only.
No structures are located in protected buffers (must meet no practical alteratives criteria).
Design Alternative (if any) and Bypass method used:
L&IZA-Bypass conveyance method is specified and plan details and calculations are provided.
!.? Alternative design option is specified and plan details and calcxulations are provided.
Discharge to level spreader and subsequent filter strip is hydraulically and spatially separate from the bypass
discharge.
No structures are located in protected buffers.
Plan details for the bypass and outlets are provided.
The operation and maintenance agreement includes annual erosion and vegetation repair.
The operation and maintenance agreement signed and notarized by the responsible party is provided.
/- m -zoo 7 -,T-
FES-33 LSW-Ql.txt
orifice calculator
Given Input Data:
solving for ..................... Flowrate
coefficient ..................... 0.6100 Oc?ce ?iaw??t?
Diameter ........................ 15.0000 in
Headwater ....................... 9.0000 i n-F- t>i4erAKCP f:& 4.,veevt 4- S ora FVice-
Tailwater ....................... 0.0000 in a < well
computed Results:
Flowrate ........................ 5.2004 cfs ,4..--- OAx. -F6vJ 4c, Leve ( *-eadt2
velocity ........................ 4.2377 fps Be 49-E 55
-1 -1 Page 1

FES-33 LSW-Qmax.txt
orifice calculator
Given Input Data:
solving for .....................
coefficient .....................
Diameter ........................
Headwater .......................
Tailwater .......................
Flowrate
0.6100
15.0000 i n *- L S ?r i ?'? Ge D i m c`4 ?2
19.0000 i n 4- k p K
0.0000 in
computed Results:
Flowrate ......................
velocity ........................
7.5560 cfs •*---• OAK Qio ??trmot/
6.1572 fps
+ 22.0 } Z?.0
MPS CQ?? )
Page 1
FES-33 BPw.txt
weir calculator
Given input Data:
weir Type .......................
Equation .......................
solving for .....................
Depth of Flow ...................
coefficient .....................
Height ..........................
Rectangular
suppressed
Flowrate
10.0000 i n -*-' V p o o ? piss Vf? ?i?,
0.6000
25.0000 in
Computed Results:
Flowrate ........................
Full Flow .......................
velocity ........................
width ...........................
Area .
Perimeter ......................
wet Perimeter ...................
Wet Area ....................
Percent Full ....................
21.9684 cfs 4- flaw ?`
86.8377 cfs
2.9291 fps
108.0000 i n Zyp o,s5 We a
18.7500 ft2
158.0000 in
128.0000 in
7.5000 ft2
40.0000 %
Page 1

`05+k
ECDesign® 2003 Channel Analysis Report
Project Information Last Update: 1/19/2007 11:49:52 AM
Project Name: Cedar Ridge
Description: Bypass Channels
City: Raleigh State: NC Units: English
Notes:
Channel Design
Channel Name: FES 33 Units: English Design Life: 1200 months
Design Criteria Vegetation and Soil Channel Geometry Flow/Velocity
Flow Rate (Q) Vegetated Yes Bed Slope (ft/ft) 0.012 Discharge (cf/s) 22
Vegetation Class C Req. Freeboard (ft) Flow Duration (hrs) 1
Soil Filled No Channel Length (ft) 83.19 Avg. Velocity (ft/s) 2.1
Channel Side Slopes Channel Bend false Bottom Width (ft) 4 Required Factor of Safety
Left (H:1 V) 2 Bend Radius (ft) 0 Channel Depth (ft) 5 1
Right (H:1 V) 2 Outside Bend
Results Avg. Flow Depth (ft): 1.42
Velocity (ft/s) Shear Stress (lbs/sgft) Pass Quantity
Lining Materials Computed Maximum
Allowed Safety
Factor Computed Maximum
Allowed Safety
Factor (SY)
Left LANDLOK TRM 435 2.030 16.490 8.120 0.870 4.700 5.400 Y 103.330
Bottom LANDLOK TRM 435 2.240 16.490 7.360 1.070 4.700 4.390 Y 36.970
Right LANDLOK TRM 435 2.030 16.490 8.120 0.870 4.700 5.400 Y 103.330
Calculation Results
Flow Depth (ft) 1.420 Left Wetted Perimeter (ft) 3.190
Flow Area (ft) 9.760 Bottom Wetted Perimeter (ft) 3.990
Right Wetted Perimeter (ft) 3.190
Total Wetted Perimeter (ft) 10.370
Hydraulic Radius (ft) 0.940 Avg. Velocity (ft/s) 2.100
Composite'n' 0.0701 Avg. Discharge (cf/s) 22.000
EC-DESIGNS 2003 page 1 1/19/2007
Cedar Ridge 1/16/2007
Rivers and Assoc., Inc. ? 2
F Gv7 - vv
LEVEL SPREADER CALCULATIONS
DRAINAGE AREA = 4.42 ACRES
RUNOFF CHARACTERISTICS
C = 0.61 FROM SYSTEM CALCS
Tc= 8.80 MIN FROM SYS CALCS
110= 6.33 IN/HR
11 = 1 IN/HR
Q10 = 17.1 CFS Q10-CI1OA
QLS = 2.7 CFS QLS=CIIA
QBP = 14.4 CFS QBP=QIO-QLS
LS LENGTH MINIMUM =
LS DESIGN LENGTH =
LS MAX FLOW =
BYPASS NEEDED ?
Impervious Cover
Forebay size req'd
0.2% of I.C.
35.0506 LF (QLS x 13)
70, LF (FROM PLAN)
5.4 CFS (DESIGN U13)
YES
1.4144 Ac.
0.0028 Ac.
123.2 S.F.
K:\26015.1 - Cedar Ridge - Triangle Assest\ADMIMK - Design DataU.EVEL SPREADERS WITH BYPASS.xis
DWQ Project No.
DIVISION OF WATER QUALITY - LEVEL SPREADER WORKSHEET (112007)
1. PROJECT INFORMATION lease complete the following information):
Project Name : 4-:-- 'P'4 R ,Z/P641F
Contact Person: -V,4 V ITS --'5W/ TA/ R F Phone Number:
Level Spreader ID: fry Ss
Level Spreader Length ?O ft
Drainage Area ?Z ac.
Impervious Area /. / ac.
Forebay Area ad ft
Maximum Filter StripBufferSlope S %
grass
Max. Discharge from 1 "Mr Storm cfs
Max. Discharge to Level Spreader ?. Y cfs
Filter Strip) Zone 2 Buffer Vegetation GRASS
(perpendicular.fo flow)
(on-site and off-site drainage to the level spreader)
(on-site and off-site drainage to the level spreader)
(0.2% of the contributing impervious surface area)
(6% for forested, leaf fitdw cover. 8%for thick ground cover
(thick ground cover or grass; canopied forest with leaf fitter
groundcover)
Pre-treatment or Bypass Method Used 4g 5
If. REQUIRED ITEMS CHECKLIST
Initial in the space provided tD indicate the following design requirements have been met and supporting documentation is attached. ffa
requirement has not been met, attach an explanation of why. At a minimum, a complete stomnaater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for
additional information and will substantially delay final review and approval of the project
ADDlicantrulnifials
Project Site was visited prior to designing level spreader.
j Date of the Site visit. PLEASE ATTACH TIME-DATED DIGITAL PHOTO OF EXISTING BUFFER CONDITIONS.
Level spreader is at least 13 t per cfs for thick ground cover or grass or 65 ft per cfs in canopied forest with leaf
litter for 50-foot buffer; 50 ft per cfs for 100-foot buffer, or 40 ft. per cfs for 150-foot buffer.
Pre-Formed Scour Holes are on flat slopes only.
No structures are located in protected buffers (must meet no practical alteratives criteria).
Design Alternative (if any) and Bypass method used:
1
Bypass conveyance method is specified and plan details and calculations are provided.
Altemative design option is specified and plan details and calculations are provided.
Discharge to level spreader and subsequent filter strip is hydraulically and spatially separate from the bypass
discharge.
No structures are located in protected buffers.
Plan details for the bypass and outlets are provided.
The operation and maintenance agreement includes annual erosion and vegetation repair.
The operation and maintenance agreement signed and notarized by the responsible party is provided.
?? S 55

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et l'q? A
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FES-55 LSW-Ql.txt
orifice calculator
Given input Data:
solving for ..................... Flowrate
coefficient ..................... 0.6100
Diameter ........................ 12.0000 in4-LS dr;f'?ce Diarne+eT-
Headwater ....................... 6.0010 in .*- =?'erenCL &A-weevn LS OrA'Cj
Tailwater ....................... 0.0000 in and -eyp .SS Weip,
computed Results:
Flowrate ........................ 2.7177 cfs 4,
velocity ........................ 3.4603 fps M'?'? l' lcvt! -} a l-ev?? S
Page 1
LgM m<
F'ES-55 4. txt
orifice calculator
Given Input Data:
solving for ..................... Flowrate
coefficient ..................... 0.6100
Diameter ........................ 12.0000 in LS orifice Diameter
Headwater ....................... 18.0000 in 6" + 12" = 18"
Tailwater ....................... 0.0000 in
computed Results:
Flowrate ........................ 4.7069 cfs max Q10 flow
velocity 5.9930 fps 4.7 + 12.8= 17.5 cfs - 17.1
cfs
Page 1
FES-55 BPW.txt
weir calculator
Given Input Data:
weir Type .......................
Equation ......................
solving for .....................
Depth of Flow ...................
coefficient .....................
Height ..........................
computed Results:
Flowrate ........................-' 12.8348 cfs
Full Flow ....................... 38.5945 cfs
velocity 3 2087 fps
width ........................... 48.0000 in
Area ... ....................... 8.3333 ft2
Perimeter ....................... 98.0000 in
wet Perimeter ................... 72.0000 in
wet Area .................... 4.0000 ft2
Percent Full .................... 48.0000 %
Rectangular
suppressed
Flowrate
12.0000 in Depth of flow at bypass weir
0.6000
25.0000 in
Flow at bypass weir
Bypass flow length
Page 1
ECDesign® 2003 Channel Analysis Report.
I Project Information Last Update: 1/19/2007 11:52:20 AM
Project Name: Cedar Ridge
Description: Bypass Channels
City: Raleigh
Notes:
State: NC Units: English
Channel Design
Channel Name: FES 55 Units: English Design Life: 1200 months

Design Criteria Vegetation and Soil Channel Geometry Flow/Velocity
Flow Rate (Q) Vegetated Yes Bed Slope (ft/ft) 0.065 Discharge (cf/s) 12.8
Vegetation Class C Req. Freeboard (ft) Flow Duration (hrs) 1
Soil Filled No Channel Length (ft) 61.3 Avg. Velocity (ft/s) 3.25
Channel Side Slopes Channel Bend false Bottom Width (ft) 4 Required Factor of Safety
Left (H:1 V) 2 Bend Radius (ft) 0 Channel Depth (ft) 5 1
Right (HA V) 2 Outside Bend
Results Avg. Flow Depth (ft): 0.69
Velocity (ft/s) Shear Stress (lbs/sqft) Pass Quantity

Lining Materials
Computed Maximum
Allowed Safety
Factor
Computed Maximum
Allowed Safety
Factor
(SY)
Left LANDLOK TRM 435 3.110 16.490 5.300 . 2.160 4.700 2.180 Y 76.140
Bottom LANDLOK TRM 435 3.520 16.490 4.680 2.780 4.700 1.690 Y 27.240
Right LANDLOK TRM 435 3.110 16.490 5.300 2.160 4.700 2.180 Y 76.140
Calculation Results s -
Flow Depth (ft) 0.690 Left Wetted Perimeter (ft) 1.540
Flow Area (ft) 3.690 Bottom Wetted Perimeter (ft) 3.990
Right Wetted Perimeter (ft) 1.540
Total Wetted Perimeter (ft) 7.070
Hydraulic Radius (ft) 0.520 Avg. Velocity (ft/s) 3.250
Composite In' 0.0700 Avg. Discharge (cf/s) 12.800
EC-DESIGNO 2003 . page 1 1/19/2007
ECDesign® 2003 Channel Analysis Report
Project Information Last Update: 1/18/2007 2:07:16 PM
Project Name: Cedar Ridge
Description: Bypass Channels
City: Raleigh State: NC Units: English
Notes:
Channel Design
Channel Name: FES 33-55 combined Units: English Design Life: 1200 months
Design Criteria Vegetation and Soil Channel Geometry Flow/Velocity
Flow Rate (Q) Vegetated Yes Bed Slope (ft/ft) 0.0775 Discharge (cf/s) 34.8
Vegetation Class C Req. Freeboard (ft) Flow Duration (hrs) 1
Soil Filled No Channel Length (ft) 116.11 Avg. Velocity (ft/s) 5.03
Channel Side Slopes Channel Bend false Bottom Width (ft) 6 Required Factor of Safety
Left (H:1 V) 2 Bend Radius (ft) 0 Channel Depth (ft) 5 1
Right (H:1 V) 2 Outside Bend
Results Avg. Flow Depth (ft): 0.83
Velocity (ft/s) Shear Stress (lbs/sgft) Pass Quantity
Lining Materials
g
Computed Maximum
Mowed Safety
Factor
Computed Maximum
Allowed Safety
Factor
(SY)
Left LANDLOK TRM 435 4.810 16.490 3.430 3.140 4.700 1.500 Y 144.220
Bottom LANDLOK TRM 435 5.450 16.490 3.030 4.020 4.700 1.170 Y 77.400
Right LANDLOK TRM 435 4.810 16.490 3.430 3.140 4.700 1.500 Y 144.220
Calculation Results - -
Flow Depth (ft) 0.830 Left Wetted Perimeter (ft) 1.860
Flow Area (ft) 6.370 Bottom Wetted Perimeter (ft) 6.000
Right Wetted Perimeter (ft) 1.860
Total Wetted Perimeter (ft) 9.720
Hydraulic Radius (ft) 0.660 Avg. Velocity (ft/s) 5.030
Composite 'n' 0.0575 Avg. Discharge (cf/s) 34.800
EC-DESIGNO 2003 page 1 1/18/2007