20010947 Ver 1_COMPLETE FILE_20010621

`O?OF vv n ? ?9OG
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micnaei r. tasiey, taovernor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Gregory J. Thorpe, Ph.D.
Acting Director
Division of Water Quality
August 21, 2001
County Wake
DWQ Project # 010947
APPROVAL of 401 Water Quality Certification and Neuse River Buffer Rules
Wakefield Commercial, LLC
2840 Plaza Place, Ste 109
Raleigh, NC 27612
Dear Sirs:
You have our approval, in accordance with the attached conditions, to impact in 480 linear feet of streams for the purpose of
constructing a stormwater pond as you described in your application dated June 21, 2001. After reviewing your application, we
have decided that this fill is covered by General Water Quality Certification Number 3287 This Certification allows you to use
Nationwide Permit Number 43 when the Corps of Engineers issues it. This approval is also valid for the Neuse River buffer rules
(15A NCAC 2B .0233). In addition, you should get any other federal, state or local permits before you go ahead with your project
including (but not limited to) Sediment and Erosion Control, Coastal Stormwater, Non-Discharge and Water Supply Watershed
regulations. Also this approval will expire when the accompanying 404 or CAMA permit expires unless otherwise
specified in the General Certification.
This approval is only valid for the purpose and design that you described in your application. If you change your project, you
must notify us and send us a new application. If the property is sold, the new owner must be given a copy of this Certification and
approval letter and is thereby responsible for complying with all conditions. This approval shall expire when the corresponding
Nationwide Permit expires or as otherwise provided in the General Certification. If total wetland fills for this project (now or in the
future) exceed one acre, compensatory mitigation may be required as described in 15A NCAC 2H .0506 (h). For this approval to
be valid, you must follow the conditions listed in the attached certification.
If you do not accept any of the conditions of this certification, you may ask for an adjudicatory hearing. You must act within
60 days of the date that you receive this letter. 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, P.O. Box 27447, Raleigh, N.C. 27611-7447. This
certification and its conditions are final and binding unless you ask for a hearing.
This letter completes the review of the Division of Water Quality under Section 401 of the Clean Water Act. If you have any
questions, please telephone John Dorney at 919-733-9646 or 8Neve Mitchell at our Raleigh Regional Office at 919-571-4700.

Attachment \l
cc: Corps of Engineers Raleigh Field Office
Raleigh DWQ Regional Office
File Copy
Central Files
Brad Suther; Soil & Environmental Consultants; 11010 Raven Ridge Road, Raleigh, NC 27614
Wetlands/401 Unit 1650 Mail Service Center Raleigh, NC 27699-1650 Ph: [phone] Fax: [phone] Customer Service
1 800 623-7748
IdANDUM
John Dorney Regional Contact:
Non-Discharge Branch WQ Supervisor:
Date:
FSUBJECT: WETLAND STAFF REPORT AND RECOMMENDATIONS
Facility Name Wakefield Commercial Tract County Wake
Project Number 01 0947 County2
Recvd From APP Region Raleigh
Received Date 6/21/01 Recvd By Region
Project Type stormwater management
Certificates Stream Stream Impacts (ft.)
Permit Wetland Wetland Wetland Stream Class Acres Feet
Type Type Impact Score Index Prim. Supp. Basin Req. Req. ME
43 Stream FT _@N F- 27-21 F C NSW 30,402. ? F_ F_ I -
(..._.?_, YON T-r-,r_f _,('_f - FF, I
Mitigation Wetland
MitigationType Type Acres Feet

Is Wetland Rating Sheet Attached? 0 Y 0 N Did you request more info? 0 Y 0 N
Have Project Changes/Conditions Been Discussed With Applicant? 0 Y 0 N
Is Mitigation required? 0 Y O N Recommendation: 0 Issue 0 Issue/COnd 0 Deny
Provided by Region: Latitude (ddmmss) 355710 Longitude (ddmmss) 783233
Comments:
Main Creek sui-bject, UT's not
_/ffice Page Number 1
Office
TRIAGE CHECKLIST
1?Ro
Project Name:
s-fe,'?'e
ci) d,(,,j
Project Number.
County: FILE :COPY
The attached project has been sent to you for review for the following reasons. Please consider whether a
site visit is needed to determine the impacts. Particular attention should focus on the below checked iterns.
Please feel tree to call the central office scarf member assigned to your region if you need assistance.
Stream Ien;th impacted.
L--? Stream determination (i.e. intermittent or perennial, or any channel present).
Wedand impact and distance to blue-line surface waters on USGS topo map.
Minimization avoidance options.
W, 14. (is access to hiahzmund or wetlands)?
t? Neuse buffer rules. '
Pond (water) fill (i.e. is the pond drained or holdin; water)?
Pond c-eadon (i.e. in uplands, in a drained channel, or in wetlands). Please locate streams and
channe'.s (if any) so that the central office can determine.
NUtigation ratios.
Stormwater pond placed in wetlands. '
_ Ditchinz in wetlands.
Is the aopiicant's proposed stream(wedand mitigation site available and viable?
Applicaulconsultant has a history of non-compliance (check drawings and application for
i
accuracy).
' I
Has project been split from previous work to avoid mitigation requirements?
i
Con-isceat with pre-application ateetings? ---- - - - - - - - -
Cumulative impact concerns.
i
OTHER:
Environmental Consultants, PA
Road • Raleigh, North Carolina 27614 • Phone: [phone] • Fax: [phone]
June 21, 2001

NCDENR-DWQ
Attn: Mr. John Dorney
2321 Crabtree Blvd.
Parkview Building
Raleigh, NC 27615 010947
US Army Corps of Engineers
Attn: Ms. Amanda Jones
6508 Falls of the Neuse Rd., Ste. 120
Raleigh, NC 27615
RE: Nationwide Permit 43/401 Water Quality Certification/Buffer Compliance Request
Wakefield Commercial Tract
Wake Forest, Wake County, North Carolina
(UTM Coordinates: Zone 17, 721700, 3981330)
S&EC Project #: 00-5973
Dear Mr. Dorney and Ms. Jones:
The purpose of this letter is to request the authorization of Nationwide Permit 43 for
impacts to two intermittent stream channels (0.031 acre). The project is located in Wake
County North of the Neuse River, west of Highway 1 and east of Falls of the Neuse Road
near Wake Forest, NC (see attached vicinity map).
All impacts will result from the fill of jurisdictional waters for construction of a
stormwater pond for commercial development (see site plan). The dimensions and other
additional specific information regarding the stormwater basin are included in the
enclosed calculation report prepared by John Tucker, Consulting Engineer (phone: 567-
0483).
Previous project impacts to jurisdictional areas and current proposed impacts are
provided in the attached Pre-construction Notification from. Previous impacts were
permitted under Nationwide Permits 12, 13, 14, 26, and 39 (Action ID# 199602047,
199920369, 199920370, 199920371, 200120770). DWQ does not require stream
mitigation for pond construction impacts to streams. Based on a site meeting in fall 1997
rte;
C:7
Charlotte Office: Greensboro Office: Hickory Office:
PMB 291, 3020-I Prosperity Church Road 3817-E Lawndale Drive 910 Boston Road
Charlotte, NC 28269-7197 Greensboro, NC 27455 Taylorsville, NC 28681
Phone: [phone] Phone: [phone] Phone [phone]
Fax: [phone] Fax: [phone] Fax: [phone]
June 21, 2001
S&EC Project #: 00-5973
Page 2 of 2
between Kevin Martin (S&EC) and Eric Galamb (NCDWQ), NCDWQ did not consider
these channels to be significant. Eric Alsmeyer and Ken Jolly (USACE) also evaluated
the channels in fall 1997 and found them to be unimportant. Because the DWQ and the
Corps considered the channel features to be insignificant/unimportant, and because the
purpose of the proposed stormwater pond is to improve water quality, S&EC does not
believe stream mitigation should be required by the USACE or DWQ. NCDWQ's
current riparian buffer policy classifies the construction of ponds in natural drainage ways
as an "allowable activity" provided that a 50-ft. riparian buffer is re-established following
construction. Because the applicant intends to re-establish a 50' buffer above normal
pool elevation of the pond as required by the Neuse River Basin buffer rules, S&EC
believes no Buffer mitigation should be required. However, if buffer mitigation is
required our client proposes payment to the North Carolina Wetland Restoration
Program.
Please contact us if you have any questions or if you would like to schedule a site
meeting.
Sincerely,
ra Suther
w??t C' llaau??t??
Kevin C. Martin
Wetland Scientist/Soil Scientist in Training
President
Attachments:
Pre-construction (PCN) notification form
USGS Site Location Map (Figure 1)
Impact Map (Figure 2)
Impact Map Blow-Up (Figure 3)
Water Quality Pond Calculation Report (DWQ only - 15 pages)
Stormwater Detention Pond Plan (DWQ only)
Agent Authorization

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of
wATF9
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Pre-Construction Notification (PCN) Application Form
For Section 404 and/or Section 10 Nationwide, Regional and General Permits, Section 401
General Water Quality Certifications, and Riparian Buffer and Watershed Buffer Rules
This form is to be used for projects qualifying for any of the U.S. Army Corps of Engineers' (USACE)
Nationwide, Regional or General Permits as required by Section 404 of the Clean Water Act and/or
Section 10 of the Rivers and Harbors Act, and for the North Carolina Division of Water Quality's
(DWQ) associated General 401 Water Quality Certifications. This form is also to be used for any
project requiring approval under any Riparian Buffer Rules implemented by the N.C. Division of Water
Quality. This form should not be used if you are requesting an Individual 404 Permit or Individual 401
Water Quality Certification. The USACE Individual Permit application form is available online at
http://www.saw.usace.army.mil/Nvetlands/Pemi app.htm.
The USACE is the lead regulatory agency. To review the requirements for the use of Nationwide,
Regional or General permits, and to determine which permit applies to your project, please go to the
USACE website at http://www.saw.usace.anny.mil/wetlands/regtour.htm, or contact one of the field
offices listed at the end of this application. The website also lists the responsible project manager for
each county in North Carolina and provides additional information regarding the identification and
regulation of wetlands and waters of the U.S.
The DWQ issues a corresponding Certification (General or Individual), and cannot tell the applicant
which 401 Certification will apply until the 404 Permit type has been determined by the USACE.
Applicants are encouraged to visit DWQ's 401/Wetlands Unit website at
http://h2o.enr.state.nc.us/ncwetlands to read about current requirements for the 401 Water Quality
Certification Program and to detennine whether or not Riparian Buffer Rules are applicable. The
applicant is also advised to read the full text of the General Certification (GC) matching the specific 404
Permit requested. In some cases, written approval for some General Certifications is not required,
provided that the applicant adheres to all conditions of the GC. Applicants lacking access to the intemet
should contact DWQ's Central Office in Raleigh at [phone].
Trout Waters Coordination - Special coordination with the North Carolina Wildlife Resources
Commission (NCWRC) is also required for projects occurring in any of North Carolina's twenty-five
counties that contain trout waters. In such cases, the applicant should contact the appropriate NCWRC
regional coordinator (listed by county on the last page of this application).
Page 1 of 12
CAMA Coordination - If the project occurs in any of North Carolina's twenty coastal counties (listed on
the last page of this application) the applicant should also contact the North Carolina Division of Coastal
Management (DCM) at [phone]. DCM will detennine whether or not the project involves a
designated Area of Environmental Concern, in which case DCM will act as the lead permitting agency.
In such cases, DCM will require a Coastal Area Management Act (CAMA) Permit and will coordinate
the 404/401 Permits.
USACE Permits - Submit one copy of this form, along with supporting narratives, maps, data forms,
photos, etc. to the applicable USACE Regulatory Field Office (addresses are listed at the end of this
application). Upon receipt of an application, the USACE will determine if the application is complete as
soon as possible, not to exceed 30 days. This PCN form is designed for the convenience of the applicant
to address information needs for all USACE Nationwide, Regional or General permits, as well as
information required for State authorizations, certifications, and coordination. Fully providing the
information requested on this form will result in a complete application for any of the USACE
Nationwide, Regional or General permits. To review the minimum amount of information that must be
provided for a complete PCN for each USACE Nationwide permit, see Condition 13, 65 Fed.Reg. 12893
(March 9, 2000), available at http:/hvww.saw.usace.anny.mil/wetlands/nwi2finalFedReg.pdf.
Processing times vary by permit and begin once the application has been determined to be complete.
Please contact the appropriate regulatory field office for specific answers to permit processing periods.
401 Water Quality Certification or Buffer Rules - All information is required unless otherwise stated
as optional. Incomplete applications will be returned. Submit seven collated copies of all USACE
Permit materials to the Division of Water Quality, 401/Wetlands Unit, 1650 Mail Service Center,
Raleigh, NC, 27699-1650. If written approval is required or specifically requested for a 401
Certification, then a non-refundable application fee is required. In brief, if project impacts include less
than one acre of cumulative wetland/water impacts and less than 150 feet cumulative impacts to
streams, then a fee of $200 is required. If either of these thresholds is exceeded, then a fee of $475 is
required. A check made out to the North Carolina Division of Water Quality, with the specific name of
the project or applicant identified, should be stapled to the front of the application package. For more
information, see the DWQ website at http://h2o.ehnr.state.nc.us/ncwetlands/fees.htmi. The fee must be
attached with the application unless the applicant is a federal agency in which case the check may be
issued from a separate office. In such cases, the project must be identifiable on the U.S. Treasury check
so that it can be credited to the appropriate project. If written approval is sought solely for Buffer Rules,
the application fee does not apply, and the applicant should clearly state (in a cover letter) that only
Buffer Rule approval is sought in writing. Wetlands or waters of the U.S. may not be impacted prior to
issuance or waiver of a Section 401 Water Quality Certification. Upon receipt of a complete application
for a 401 Certification, the Division of Water Quality has 60 days to prepare a written response to the
applicant. This may include a 401 Certification, an on-hold letter pending receipt of additional
requested information, or denial.
Page 2 of 12
Office Use Only: Form Version April 2001
USACE Action ID No. DWQ No. 010947
If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A" rather than
leaving the space blank.
1. Processing
1. Check all of the approval(s) requested for this project:
® Section 404 Permit
? Section 10 Permit
® 401 Water Quality Certification
® Riparian or Watershed Buffer Rules
2. Nationwide, Regional or General Permit Number(s) Requested: 43
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 Wetlands Restoration Program (NCWRP) is proposed for
mitigation of impacts (see section VIII - Mitigation), check here: ?
II. Applicant Information
1. Owner/Applicant Information
Name: Wakefield Commercial LLC
Mailing Address: 2840 Plaza Place Suite 109
Raleigh NC 27612
Telephone Number: [phone] Fax Number:
E-mail Address:
2. Agent 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: Kevin C. Martin
Company Affiliation: Soil & Environmental Consultants, Inc.
Mailing Address: 11010 Raven Ridge Road
Raleigh NC 27614
Telephone Number: [phone] Fax Number: (.919) 846-9467
E-mail Address: kmartin(i?sandec com
Page 3 of 12
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: Wakefield Commercial Tract
2. T.I.P. Project Number (NCDOT Only): NA
3. Property Identification Number (Tax PIN): 1739583797
4. Location
County: Wake Nearest Town: Wake Forest
Subdivision name (include phase/lot number): NA
Directions to site (include road numbers, landmarks, etc.): The project is located in Wake
County north of the Neuse River, west of Highway 1 and east of Falls of the Neuse Road
near Wake Forest NC (see site vicinity map,).
5. Site coordinates, if available (UTM or Lat/Long): Zone 17, 721700, 3981330
(Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the
coordinates for each crossing of a distinct waterbody.)
6. Describe the existing land use or condition of the site at the time of this application:
The site conditions over the entire 1900-acre project area range from undeveloped to partially
developed to developed. Some previously permitted roads and infrastructure have been
developed. Lots in some upland areas of the site have been partially or completely
developed.
7. Property size (acres): 1900 acres
8. Nearest body of water (stream/river/sound/ocean/lake): UT of Richland Creek
Page 4 of 12
9. River Basin: Neuse
(Note - this must be one of North Carolina's seventeen designated major river basins. The
River Basin map is available at http://li2o.enr.state.nc.us/admin/inaps/.)
10. Describe the purpose of the proposed work: The purpose of this project is to construct a
stonnwater detention pond to treat stormwater run-off for the site.
11. List the type of equipment to be used to construct the project: This project entails the
use of conventional heavequipment.
12. Describe the land use in the vicinity of this project: Commercial and residential.
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.
Nationwide permits 13, 14 and 26 were re-authorized for this site in March 2001. Action ID
Numbers for these permits are 199920369 (NWP 13 -- 0.098 acres/602 linear feet); 199920370
(NWP 14 -- 0.304 acre total width 1121, and 199920371 (NWP 26 -- 0.643 acre, 445 linear
feet) Nationwide permit 12 was issued for this site to permit temporary impacts associated with
installation of sewer lines (#199602047 - 0.58 acre). Nationwide permit 39 was also issued for
this site and authorized 0.329 acre of wetland impacts (Action ID # 200120770). DWQ Project
Numbers associated with this site include 970694 and 991281. The total previous permanent
impacts on this site are 1.374 acres Previous impacts have been mitigated for as required.
V. Future Project Plans
Are any additional permit requests anticipated for this project in the future? If so, describe the
anticipated work, and provide justification for the exclusion of this work from the current
application: None known at this time
Page 5 of 12
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. The applicant must also
provide justification for these impacts in Section VII below. All proposed impacts, permanent
and temporary, must be listed herein, and must be clearly identifiable on an accompanying site
plan. All wetlands and waters, and all streams (intermittent and perennial) must 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 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. Wetland Impacts
Wetland Impact
Site Number
indicate on ma
Type of Impact* Area of
Impact
(acres) Located within
100-year Floodplain**
yes/no Distance to
Nearest Stream
(linear feet
Type of Wetland***
NA

* List each impact separately and identify temporary impacts. 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.
** 100-Year floodplains are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps
(FIRM), or FEMA-approved local floodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or
online at http://www.fema.gov.
*** List a wetland type that best describes wetland to be impacted (e.g., freshwater/saltwater marsh, forested wetland, beaver pond,
Carolina Bay, bog, etc.)
List the total acreage (estimated) of existing wetlands on the property: >50 acres
Total area of wetland impact proposed: NA
2. Stream Impacts, including all intermittent and perennial streams
Stream Impact Length of Average Width Perennial or
Site Number Type of Impact* Impact Stream Name** of Stream Intermittent?
indicate on ma (linear feet) Before Impact leasespecify)
1 Fill 130' UT of Richland Creek 2' intermittent
2 Fill & 350' UT of Richland Creek 3' intermittent
Excavation

Page 6 of 12

* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: culverts and associated nprap,
dams (separately list impacts due to both structure and flooding), relocation (include linear feet before and after, and net loss/gain),
stabilization activities (cement wall, rip-rap, crib wall, 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.
** Stream names can be found on USGS topographic maps. If a stream has no name, list as UT (unnamed tributary) to the nearest
downstream named stream into which it flows. USGS maps are available through the USGS at 1-800-358-9616, or online at
www.usgs.gov. Several internet sites also allow direct download and printing of USGS maps (e.g., www.topozone.cotry
www.mapguest.com, etc.).
Cumulative impacts (linear distance in feet) to all streams on site: 480 linear feet
3. Open Water Impacts, including Lakes, Ponds, Estuaries, Sounds, Atlantic Ocean and any
other Water of the U.S.
Open Water Impact
Site Number
indicate on ma
Type of Impact* Area of
Impact
acres Name of Waterbody
(if applicable) Type of Waterbody
(lake, pond, estuary, sound,
bay, ocean, etc.
NA

g,
* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: fill, excavation, dredgin
flooding, drainage, bulkheads, etc.
4. 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.): Dam/embankment and concrete riser.
Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond,
local stormwater requirement, etc.): stormwater requirement
Size of watershed draining to pond: 17.94 acres Expected pond surface area:+/- 0.6 acre
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
Page 7 of 12
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 applicant requested a detailed delineation of wetlands prior to site plan development in
order to avoid jurisdictional wetlands and waters to the maximum extent practicable. However,
in order to satisfy conditions of the previous permits issued for this site, the applicant is required
to construct a stormwater detention pond to improve water quality. The construction of the
stormwater pond will require impacts to two unimportant/insignificant charnels. Following
construction the applicant will reestablish and preserve the 50-foot Neuse River buffers
landward from the pond's normal pool elevation
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 March 9, 2000, 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 NCWRP 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/sti-i-ngide.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.
Page 8 of 12
2. Mitigation may also be made by payment into the North Carolina Wetlands Restoration
Program (NCWRP) with the NCWRP's written agreement. Check the box indicating that
you would like to pay into the NCWRP. Please note that payment into the NCWRP must be
reviewed and approved before it can be used to satisfy mitigation requirements. Applicants
will be notified early in the review process by the 401/Wetlands Unit if payment into the
NCWRP is available as an option. For additional information regarding the application
process for the NCWRP, check the NCWRP website at http://h2o.enr.state.ne.us/ww/index.htm If
use of the NCWRP is proposed, please check the appropriate box on page three and provide
the following information:
Amount of stream mitigation requested (linear feet): NA
Amount of buffer mitigation requested (square feet): NA
Amount of Riparian wetland mitigation requested (acres): NA
Amount of Non-riparian wetland mitigation requested (acres): NA
Amount of Coastal wetland mitigation requested (acres): NA
IX. Environmental Documentation (DWQ Only)
Does the project involve an expenditure of public funds or the use of public (federal/state/local)
land?
Yes ? No
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 ?
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 (DWQ Only)
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.
Page 9 of 12
Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233
(Neuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 2B .0250 (Randleman Rules and
Water Supply Buffer Requirements), or other (please identify )?
Yes ? No ® If you answered "yes", provide the following information:
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.
Zone* Impact
(square feet Multiplier Required
Mitigation
1 NA 3 NA
2 1.5 NA
Total NA
* Zone I extends out 30 teet perpendicular from near bank of channel; Gone L extends an
additional 20 feet from the edge of Zone 1.
If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation
of Property, Conservation Easement, Riparian Buffer Restoration / Enhancement, Preservation or
Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as
identified within 15A NCAC 213 .0242 or.0260.
NA
XI. Stormwater (DWQ Only)
Describe impervious acreage (both 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.
Stormwater detention is required on the Wakefield Commercial Tract as per the conditions stated
in previous permits issued for the site. The purpose of the proposed pond is to detain stormwater
entering an unnamed tributary to Richland Creek. As depicted on the attached USGS
topographic map the pond will detain stormwater east of a ridge located on the northeastern
portion of the property. Stormwater detention ponds west of this ridge and elsewhere on-site
were authorized under the previous permits for this site
XII. Sewage Disposal (DWQ Only)
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.
Municipal sewer.
Page 10 of 12
XIII. Violations (DWQ Only)
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. 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).
-J?, ! C, , C/ ?Sj
Applican g nt's S' nature Date
(Agent's signa ure is valid only if an authorization letter from the applicant is provided.)
US Army Corps Of Engineers Field Offices and County Coverage
Asheville Regulatory Field Office Alexander Cherokee Iredell Mitchell
US Army Corps of Engineers Avery Clay Jackson Polk
151 Patton Avenue Buncombe Cleveland Lincoln Rowan
Room 208 Burke Gaston Macon Rutherford
Asheville, NC 28801-5006 Cabarrus Graham Madison Stanley
Telephone: [phone] Caldwell Haywood McDowell Swain
Fax: [phone] Catawba Henderson Mecklenburg Transylvania
Raleigh Regulatory Field Office Alamance Durham Johnston Rockingham
US Army Corps Of Engineers Alleghany Edgecombe Lee Stokes
6508 Falls of the Neuse Road Ashe Franklin Nash Surry
Suite 120 Caswell Forsyth Northampton Vance
Raleigh, NC 27615 Chatham Granville Orange Wake
Telephone: [phone] Davidson Guilford Person Warren
Fax: [phone] Davie Halifax Randolph Wilkes
Washington Regulatory Field Office Beaufort Currituck Jones Pitt
US Army Corps Of Engineers Bertie Dare Lenoir Tyrrell
Union
Watauga
Yancey
Wilson
Yadkin
Page 11 of 12
Post Office Box 1000 Camden Gates Martin Washington
Washington, NC 27889-1000 Carteret* Green Pamlico Wayne
Telephone: [phone] Chowan Hertford Pasquotank
Fax: [phone] Craven Hyde Perquimans *Croatan National Forest Only
Wilmington Regulatory Field Office Anson Duplin Onslow
US Army Corps Of Engineers Bladen Harnett Pender
Post Office Box 1890 Brunswick Hoke Richmond
Wilmington, NC 28402-1890 Carteret Montgomery Robeson
Telephone: [phone] Columbus Moore Sampson
Fax: [phone] Cumberland New Hanover Scotland
US Fis
US Fish and Wildlife Service
Raleigh Field Office
Post Office Box 33726
Raleigh, NC 27636-3726
Telephone: [phone]
h and Wildlife Service / National N
US Fish and Wildlife Service
Asheville Field Office
160 Zillicoa Street
Asheville, NC 28801
Telephone: [phone]
[arine Fisheries Service
National Marine Fisheries Service
Habitat Conservation Division
Pivers Island
Beaufort, NC 28516
Telephone: [phone]
North Carolina State Agencies
Division of Water Quality
401 Wetlands Unit
1650 Mail Service Center
Raleigh, NC 27699-1650
Telephone: [phone]
Fax: [phone]
Division of Water Quality
Wetlands Restoration Program
1619 Mail Service Center
Raleigh, NC 27699-1619
Telephone: [phone]
Fax: [phone]
CAMA and NC Coastal Counties
State Historic Preservation Office
Department Of Cultural Resources
4617 Mail Service Center
Raleigh, NC 27699-4617
Telephone: [phone]
Fax: [phone]
Division of Coastal Management Beaufort Chowan Hertford Pasquotank
1638 Mail Service Center Bertie Craven Hyde Pender
Raleigh, NC 27699-1638 Brunswick Currituck New Hanover Perquimans
Telephone: [phone] Camden Dare Onslow Tyrrell
Fax: [phone] Carteret Gates Pamlico Washington
NCWRC and NC Trout Counties
Western Piedmont Region Coordinator Alleghany Caldwell Watauga
3855 Idlewild Road Ashe Mitchell Wilkes
Kernersville, NC 27284-9180 Avery Stokes
Telephone: [phone] Burke Surry
Mountain Region Coordinator Buncombe Henderson Polk
20830 Great Smoky Mtn. Expressway Cherokee Jackson Rutherford
Waynesville, NC 28786 Clay Macon Swain
Telephone: [phone] Graham Madison Transylvania
Fax: [phone] Haywood McDowell Yancey
Page 12 of 12

Impact 1
I E, 130 LF I
Non-buffered
\\ o? Insignificant/Unimportant Channel
1
RETE TION POND
l 1
Impact 2
\\?S, 350 LF
Buffered AT I i
Insignificant/Unimportant Channel
f ? ?I?II I??1 ? ?? 1
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....................
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Scale: 1" =120' - ----------- '
wi/Y?/?® ?//?s I
s? AM WAKEFIELD CORPORATE CENTER I I - II I / ?' li
/ ° p WAKEFIELD DEVELOPMENT -
RALEIGH. NORTH CAROLINA
8:-7:Lxr `o"C..W... ^ "0• "'• !d :?I: :»' GENERAL SITE PLAN F= ' ?'
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I
mental Consultants, Inc.
Soil & Envx-ro A Fax [phone],
244 west Millbrook Road ¦ Raleigh, Nonh Carolina 27609 M [phone]
AGENT AUTjjOR1ZA n?N FORM
Name=
Address;
Phone:
Project Name/Descnption:
W
Date:
The Department of the Arm/ Wilmington District
U.S. Army Corps of Enen
P.O. Box
Wilmington, NC 28402
Adn'
Field Office:
Re: Wetlands Related Consulting and Permitting

vv? YYis? C C rc
To Whom It May Concern' bL En„i•orunental Consultants, lnc• to
owner, eby designate and authorize Soil to furnish upon request
I, the current pY. agent in the processing of per=t applications, and The ? day of
act in my behalf as my rt of aPPla[ationl, etc. from this day, forty
Supplemental ir?formataon in snp?
previous correspondence concerning the agent for this project-
This notification supe l any
ofeseiottal courtesy reasons, Yo ahotild Ball SacEC
NOTICb: This authorization, for liability and en accompanied by SbcBC staff.
government officials to enter the property
e a site meeting Prico to visiting the site.
to ng
i
Property Qwtlees S?,ature
print Property Owner's Name
cc: Mr. Kevin Martin ?? mac.
cc' Mr. John Domey uali plaruzing Soil & Fstvironmental Consultan
Road a?cnt.frnr
NCDF'" & NR - pWQ, water Q ty 4401 Reedy Creek
Raleigh. NC 27607 Ln? imnit?cntll .?
?1 and Mitig tuon - - - + - -- -
a ing and Physical ;analysis C? Wetlands Mapping
c.......•..• F...rl?r•,rin? •rn? nPCion
z 0 0 Qj
OOSSN GIBIAHXYA STL6 69L 6T6 XYd ZS:ZT INN 66/6T/TT
WATER QUALITY POND CALCULATIONS
WAKEFIELD CORPORATE CENTER
Wakefield Commercial Development
Raleigh, N.C.
February , 2001
Owner
Wakefield Corporate Center, LLC
4109 Wake Forest Rd., Suite 304
Raleigh, N.C. 27609
John A.K. Tucker, P.E.
Consulting Engineer
Post Office Box 297
Fuquay-Varina, North Carolina 27526

Voice [phone]
Fax [phone]
John A.K Tucker, P.E.
Consulting Engineer
P.O. Box 297
Fuquay-varina, North Carolina 27526
Project Wakefield Corporate Center
Sheet of
Date
Scale NA
Wakefield Corportate Center
Design Calculations for Water Ouality Pond
Pond is required to capture the first inch of rainfall from imperious areas
and discharge it over a period of 24 to 120 hours.
Check pond routing against the 2 yr, 10 yr and 100 yr 24 hour storms.
Design Data
Drainage Area
Estimated C Factor
Hydraulic Length
Hydraulic Height
Weighted SCS Curve Factor
Calculated Peak Flows
2 yr - 24 hr
10 yr - 24 hr
100 yr - 24 hr
17.94 AC
0.70
1305 FT
68 FT
89
68.82 CFS
87.15 CFS
108. 88 CFS
Results
Storage required for first inch 65,096 CF (calculated for entire site)
Storage provided for first inch 74,084 CF
Elevations
Invert-in Barrel
Top of Riser
Emergency Spillway
Top o f Dam
279.00
285.00
287. 00
289.00
Detention Times
2 yr - 24 hr 94.65 HRS
10 yr - 24 hr 95.53 HAS
100 yr - 24 hr 56.10 HPS
John A.K Tucker, P.E.
'Consulting Engineer
P.O. Box 297
Fuquay-Varina, North Carolina 27526
Project Wakefield Corporate Center
Sheet of
Date
Scale NA
Emergency Spillway Design
Proposed Lining
Rip Rap (d50 = 9")
Channel Width 15 FT
Channel Slope 0.14 FT/FT
Mannings "N" Number 0.033
TRAPEZOIDAL CHANNEL ANALYSIS
NORMAL DEPTH COMPUTATION
aaaa aaaaaaaaaaas=
PROGRAM INPUT DATA
DESCRIPTION VALUE
--------------------------------------------------------------------------------
Flow Rate (cfs)............................................. 38.0
Channel Bottom Slope (ft/ft).. .... .. .................. 0.14
Manning's Roughness Coefficient (n-value).. 0.033
Channel Left Side Slope (horizontal/vertical) ............... 3.0
Channel Right Side Slope (horizontal/vertical) .............. 3.0
Channel Bottom Width (ft) ................................... 15.0
COMPUTATION RESULTS
DESCRIPTION VALUE
Normal Depth (ft) 0.32
Flow Velocity (fps) 7.51
Froude Number 2.421
Velocity Head (f t) O.BB
Energy Head (ft) 1.19
Cross-Sectional Area of Flow (sq ft) 5.06
Top Width of Flow (ft) 15.9
HYDROCALC Hydraulics for Windows, Version 1.2 Copyright (c) 1996
Dodson 6 Associates, Inc., 5629 FM 1960 West, Suite 314, Houston, TX 77069
Phone: [phone], Fax: [phone], Email: [e-mail]
All Rights Reserved.
Check Shear Stress
T = yds where y = unit wt of water (62.4 f/cf)
d - flow depth - ft
s = slope - ft/ft
T=62.4x .32x 0.14
T = 2. BO
Maximum allowed stress for 9" rip rap - 3.00 > 2.80 - OK
HRM-SWM.WB2 JAKT Nov 1999
Perfoms analysis of wet detention ponds in accordance with DWQ BMP's
INPUT DATA: Input data is highlighted. All other values calculated.
LOCATION: Wakefield Development
RAINFALL: Wake County, NC
2 yr 100 yr Source
Duration: (in) (in)
5 min 0.47 0.82 NOAA Hydro 35
15 min 1.01 1.81 NOAA Hydro 35
60 min 1.70 3.50 NOAA Hydro 35
24 hr 3.50 8.00 USWB TP 40
WATERSHED: 17.94 Area, acres
1305 Hydraulic Length, feet
68 Hydraulic Height, feet
0.7 Weighted Rational C
89 Weighted SCS Curve Number
6.1 Computed Time of Concentration (Tc), min., by Kirpich Eqn.
DESIGN STORM: 2 -year Return Frequency
24 -Hour Storm Duration
3.50 Depth, inches, select from DDFIDF page based on Duration and Return Freq.
5.48 Intensity, inches/hour, select from DDFIDF page based on Tc and Return Freq.
HYDROGRAPH: 68.82 Computed Peak Flow by Rational, cfs
1.24 5=1000/CN-10
2.36 Depth of Runoff, inches
153,503.90 Volume of Runoff, cf
26.73 Time to Peak, min.
STAGE-STORAGE: 8208 Ks, constant
1.62 b, exponent
279 Reference Elevation, feet
STAGE-DISCHARGE: 6 Riser Diameter, feet
285 Riser Crest Elev., feet
3.33 Riser Weir Coeff.
0.65 Riser Orifice Coeff.
2.00 Barrel Diameter, feet
279 Barrel Invert Elev., feet
0.65 Barrel Orifice Coeff.
0.25 Dewatering Orfice Dia, feet
283 Dewatering Orfce Elev, feet
0.6 Dewatering Orfice Coeff
ROUTING: 3 Desired Computational Interval, minutes
283 Starting Water Surface Elev.
RESULTS: 285.63 Peak Water Surface Elev., feet
0.63 Depth over Riser Crest, feet
0.00 Depth over E. Spillway, feet
0.00 Depth over Top of Dam, feet
287 E. Spillway Crest Elev., feet
40 E. Spillway Crest Width, feet
3.33 E. Spillway Weir Coeff.
289 Top of Dam Elev., feet
100 Top of Dam Crest Width, feet
3.33 Top of Dam Weir Coeff.
32.1 Total Peak Discharge, cfs
31.71 Primary Peak Discharge, cfs
0.39 Small Ortice Peak Discharge, cfs
0.0 E. Spill. Peak Discharge, cfs
0.0 Top of Dam Peak Discharge, cfs
ALLIES BELOW ARE TRANSFERRED FROM "MAIN" SHEET. DO NOT RE-ENTER VALUES HERE. OK
68.8 Computed Peak Flow by Rational, cfs 8208 Ks, constant
1.24 S=1000/CN-10 1.62 b, exponent
2.36 Depth of Runoff, inches 279 Reference Elevation, feet
153504 Volume of Runoff, cf
263 Time to Peak, min. 6 Riser Diameter, feet 287 E. Spillway Crest Elev., feet
285 Riser Crest Elev., feet 15 E. Spillway Crest Width, feet
3 Desired Computational Interval, minutes 3.33 Riser Weir Coeff. 3.33 E. Spillway Weir Coeff.
283 Starting Water Surface Elev. 0.65 Riser Orifice Coeff.
2.00 Barrel Diameter, feet 289 Top of Dam Elev., feet
279 Barrel Invert Elev., feet 100 Top of Dam Crest Width, feet
0.65 Barrel Orifice Coeff. 3.33 Top of Dam Weir Coeff.
0.25 Dewatering Orfice Dia, feet
283.00 Dewatering Office Elev, feet
0.60 Dewaterinq Orfice Coeff
Time, min Inflow,cfs Storage, cf Stage, ft. Elev., ft.
0 0.0 77549 4.00 283.00
3 2.1 77534 4.00 283.00
6 8.2 77915 4.01 283.01
9 17.5 79376 4.06 283.06
12 28.9 82512 4.16 283.16
15 41.0 87693 4.32 283.32
18 52.2 95041 4.54 283.54
21 61.3 104410 4.81 283.81
24 67.1 115404 5.11 284.11
27 68.8 127428 5.44 284.44
30 66.3 139759 5.75 284.75
33 59.9 151636 6.05 285.05
36 51.9 162223 6.31 285.31
39 44.8 169556 6.48 285.48
42 38.7 173762 6.58 285.58
45 33.5 175650 6.63 285.63
48 28.9 176011 6.63 285.63
51 25.0 175441 6.62 285.62
54 21.6 174342 6.60 285.60
57 18.7 172971 6.56 285.56
60 16.1 171487 6.53 285.53
63 13.9 169982 6.49 285.49
66 12.1 168512 6.46 285.46
69 10.4 167108 6.43 285.43
72 9.0 165785 6.39 285.39
75 7.8 164548 6.36 285.36
78 6.7 163399 6.34 285.34
81 5.8 162336 6.31 285.31
84 5.0 161355 6.29 285.29.
87 4.3 160450 6.27 285.27
90 3.8 159618 6.25 285.25
93 3.2 158851 6.23 285.23
96 2.8 158146 6.21 285.21
99 2.4 157497 6.19 285.19
102 2.1 156900 6.18 285.18
105 1.8 156351 6.17 285.17
108 1.6 155844 6.15 285.15
111 1.4 155378 6.14 285.14
114 1.2 154947 6.13 285.13
117 1.0 154550 6.12 285.12
120 0.9 154183 6.11 285.11
123 0.8 153844 6.11 285.11
126 0.7 153530 6.10 285.10
129 0.6 153239 6.09 285.09
132 0.5 152970 6.08 285.08
135 0.4 152720 6.08 285.08
138 0.4 152488 6.07 285.07
141 0.3 152272 6.07 285.07
144 0.3 152071 6.06 285.06
147 0.2 151883 6.06 285.06
150 0.2 151709 6.05 285.05
153 0.2 151545 6.05 285.05
156 0.2 151392 6.05 285.05
159 0.1 151249 6.04 285.04
162 0.1 151114 6.04 285.04
165 0.1 150988 6.04 285.04
168 0.1 150868 6.03 285.03
171 0.1 150756 6.03 285.03
174 0.1 150650 6.03 285.03
177 0.1 150550 6.02 285.02

Riser Mbul
Orifice, oa c'
Orifice, Orfice,
Primary Orfice,
E. Spill,
Top of
Total
Weir, cfs cfs cfs cfs Dis., cfs cfs cfs Dam, cfs Dis., cfs
0.0 0.0 36.6 0.084 0.000 0.084 0.0 0.0 0.084
0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
0.0 0.0 36.7 0.087 0.000 0.087 0.0 0.0 0.087
0.0 0.0 36.9 0.101 0.000 0.101 0.0 0.0 0.101
0.0 0.0 37.2 0.125 0.000 0.125 0.0 0.0 0.125
0.0 0.0 37.8 0.157 0.000 0.157 0.0 0.0 0.157
0.0 0.0 38.6 0.192 0.000 0.192 0.0 0.0 0.192
0.0 0.0 39.5 0.228 0.000 0.228 0.0 0.0 0.228
0.0 0.0 40.5 0.263 0.000 0.263 0.0 0.0 0.263
0.0 0.0 41.6 0.295 0.000 0.295 0.0 0.0 0.295
0.0 0.0 42.6 0.324 0.000 0.324 0.0 0.0 0.324
0.7 33.3 43.5 0.349 0.724 0.349 0.0 0.0 1.072
10.8 81.9 44.3 0.369 10.753 0.369 0.0 0.0 11.122
21.1 102.5 44.8 0.382 21.069 0.382 0.0 0.0 21.450
27.9 112.5 45.1 0.389 27.854 0.389 0.0 0.0 28.243
31.1 116.7 45.3 0.392 31.077 0.392 0.0 0.0 31.469
31.7 117.5 45.3 0.393 31.705 0.393 0.0 0.0 32.098
30.7 116.2 45.2 0.392 30.715 0.392 0.0 0.0 31.107
28.8 113.8 45.2 0.390 28.834 0.390 0.0 0.0 29.223
26.5 110.7 45.1 0.388 26.536 0.388 0.0 0.0 26.924
24.1 107.2 45.0 0.385 24.113 0.385 0.0 0.0 24.498
21.7 103.6 44.9 0.382 21.730 0.382 0.0 0.0 22.113
19.5 99.8 44.8 0.380 19.477 0.380 0.0 0.0 19.856
17.4 96.2 44.7 0.377 17.395 0.377 0.0 0.0 17.772
15.5 92.5 44.6 0.375 15.499 0.375 0.0 0.0 15.874
13.8 89.0 44.5 0.373 13.791 0.373 0.0 0.0 14.164
12.3 85.6 44.4 0.371 12.260 0.371 0.0 0.0 12.631
10.9 82.3 44.3 0.369 10.895 0.369 0.0 0.0 11.264
9.7 79.1 44.2 0.367 9.681 0.367 0.0 0.0 10.048
8.6 76.0 44.2 0.365 8.602 0.365 0.0 0.0 8.968
7.6 73.1 44.1 0.364 7.645 0.364 0.0 0.0 8.009
6.8 70.3 44.1 0.362 6.797 0.362 0.0 0.0 7.160
6.0 67.6 44.0 0.361 6.045 0.361 0.0 0.0 6.407
5.4 65.0 44.0 0.360 5.379 0.360 0.0 0.0 5.739
4.8 62.5 43.9 0.359 4.788 0.359 0.0 0.0 5.147
4.3 60.2 43.9 0.358 4.264 0.358 0.0 0.0 4.622
3.8 57.9 43.8 0.357 3.799 0.357 0.0 0.0 4.156
3.4 55.7 43.8 0.356 3.386 0.356 0.0 0.0 3.742
3.0 53.6 43.8 0.355 3.019 0.355 0.0 0.0 3.375
2.7 51.6 43.7 0.354 2.693 0.354 0.0 0.0 3.047
2.4 49.7 43.7 0.354 2.403 0.354 0.0 0.0 2.756
2.1 47.9 43.7 0.353 2.144 0.353 0.0 0.0 2.497
1.9 46.1 43.7 0.352 1.914 0.352 0.0 0.0 2.266
1.7 44.4 43.6 0.352 1.708 0.352 0.0 0.0 2.060
1.5 42.7 43.6 0.351 1.524 0.351 0.0 0.0 1.875
1.4 41.1 43.6 0.351 1.360 0.351 0.0 0.0 1.711
1.2 39.6 43.6 0.350 1.213 0.350 0.0 0.0 1.563
1.1 38.1 43.6 0.350 1.081 0.350 0.0 0.0 1.431
1.0 36.6 43.5 0.350 0.963 0.350 0.0 0.0 1.313
0.9 35.3 43.5 0.349 0.857 0.349 0.0 0.0 1.206
0.8 33.9 43.5 0.349 0.762 0.349 0.0 0.0 1.111
0.7 32.6 43.5 0.348 0.677 0.348 0.0 0.0 1.025
0.6 31.3 43.5 0.348 0.600 0.348 0.0 0.0 0.948
0.5 30.0 43.5 0.348 0.531 0.348 0.0 0.0 0.878
0.5 28.8 43.5 0.348 0.468 0.348 0.0 0.0 0.816
0.4 27.6 43.5 0.347 0.412 0.347 0.0 0.0 0.759
0.4 26.4 43.5 0.347 0.361 0.347 0.0 0.0 0.708
0.3 25.3 43.4 0.347 0.316 0.347 0.0 0.0 0.662
0.3 24.1 43.4 0.347 0.274 0.347 0.0 0.0 0.621
0.2 23.0 43.4 0.347 0.237 0.347 0.0 0.0 0.583
180 0.0 150454 6.02 285.02 0.2 21.8 43.4 0.346 0.203 0.346 0.0 0.0 0.550
• 183 0.0 150364 6.02 285.02 0.2 20.7 43.4 0.346 0.173 0.346 0.0 0.0 0.519
186 0.0 150278 6.02 285.02 0.1 19.5 43.4 0.346 0.146 0.346 0.0 0.0 0.492
189 0.0 150196 6.02 285.02 0.1 18.4 43.4 0.346 0.121 0.346 0.0 0.0 0.467
192 0.0 150117 6.01 285.01 0.1 17.2 43.4 0.346 0.099 0.346 0.0 0.0 0.445
195 0.0 150042 6.01 285.01 0.1 15.9 43.4 0.345 0.079 0.345 0.0 0.0 0.425
198 0.0 149969 6.01 285.01 0.1 14.7 43.4 0.345 0,062 0.345 0.0 0.0 0.407
201 0.0 149900 6.01 285.01 0.0 13.3 43.4 0.345 0.046 0.345 0.0 0.0 0.392
204 0.0 149832 6.01 285.01 0.0 11.9 43.4 0.345 0.033 0.345 0.0 0.0 0.378
0.0 78641 4.03 283.03 0.0 0.0 36.8 0.094 0.000 0.094 0.0 0.0 0.094
0.0 78624 4.03 283.03 0.0 0.0 36.8 0.094 0.000 0.094 0.0 0.0 0.094
0.0 78607 4.03 283.03 0.0 0.0 36.8 0.094 0.000 0.094 0.0 0.0 0.094
0.0 78590 4.03 283.03 0.0 0.0 36.8 0.094 0.000 0.094 0.0 0.0 0.094
0.0 78574 4.03 283.03 0.0 0.0 36.8 0.094 0.000 0.094 0.0 0.0 0.094
0.0 78557 4.03 283.03 0.0 0.0 36.8 0.094 0.000 0.094 0.0 0.0 0.094
0.0 78540 4.03 283.03 0.0 0.0 36.8 0.093 0.000 0.093 0.0 0.0 0.093
0.0 78523 4.03 283.03 0.0 0.0 36.8 0.093 0.000 0.093 0.0 0.0 0.093
0.0 78506 4.03 283.03 0.0 0.0 36.8 0.093 0.000 0.093 0.0 0.0 0.093
0.0 78489 4.03 283.03 0.0 0.0 36.8 0.093 0.000 0.093 0.0 0.0 0.093
0.0 78473 4.03 283.03 0.0 0.0 36.8 0.093 0.000 0.093 0.0 0.0 0,093
0.0 78456 4.03 283.03 0.0 0.0 36.7 0.093 0.000 0.093 0.0 0.0 0.093
0.0 78439 4.03 283.03 0.0 0.0 36.7 0.093 0.000 0.093 0.0 0.0 0.093
0.0 78423 4.03 283.03 0.0 0.0 36.7 0.092 0.000 0.092 0.0 0.0 0,092
0.0 78406 4.03 283.03 0.0 0.0 36.7 0.092 0.000 0.092 0.0 0.0 0.092
0.0 78389 4.03 283.03 0.0 0.0 36.7 0.092 0.000 0.092 0.0 0.0 0.092
0.0 78373 4.03 283.03 0.0 0.0 36.7 0.092 0.000 0.092 0.0 0.0 0.092
0.0 78356 4.03 283.03 0.0 0.0 36.7 0.092 0.000 0.092 0.0 0.0 0.092
0.0 78340 4.03 283.03 0.0 0.0 36.7 0.092 0.000 0.092 0.0 0.0 0.092
0.0 78323 4.02 283.02 0.0 0.0 36.7 0.091 0.000 0.091 0.0 0.0 0.091
0.0 78307 4.02 283.02 0.0 0.0 36.7 0.091 0.000 0.091 0.0 0.0 0.091
0.0 78290 4.02 283.02 0.0 0.0 36.7 0.091 0.000 0.091 0.0 0.0 0,091
0.0 78274 4.02 283.02 0.0 0.0 36.7 0.091 0.000 0.091 0.0 0.0 0.091
0.0 78258 4.02 283.02 0.0 0.0 36.7 0.091 0.000 0.091 0.0 0.0 0.091
0.0 78241 4.02 283.02 0.0 0.0 36.7 0.091 0.000 0.091 0.0 0.0 0.091
0.0 78225 4.02 283.02 0.0 0.0 36.7 0.090 0.000 0.090 0.0 0.0 0.090
0.0 78209 4,02 283.02 0.0 0.0 36.7 0.090 0.000 0.090 0.0 0.0 0.090
0.0 78192 4.02 283.02 0.0 0.0 36.7 0.090 0.000 0.090 0.0 0.0 0.090
0.0 78176 4,02 283.02 0.0 0.0 36.7 0,090 0.000 0.090 0.0 0.0 0.090
0.0 78160 4.02 283.02 0.0 0.0 36.7 0.090 0.000 0.090 0.0 0.0 0.090
0.0 78144 4.02 283.02 0.0 0.0 36.7 0,090 0.000 0,090 0.0 0.0 0.090
0.0 78128 4.02 283.02 0.0 0.0 36.7 0.090 0.000 0.090 0.0 0.0 0.090
0.0 78112 4.02 283.02 0.0 0.0 36.7 0.089 0.000 0.089 0.0 0.0 0.089
0.0 78095 4.02 283.02 0.0 0.0 36.7 0.089 0.000 0.089 0.0 0.0 0.089
0.0 78079 4.02 283.02 0.0 0.0 36.7 0.089 0.000 0.089 0.0 0.0 0.089
0.0 78063 4.02 283.02 0.0 0.0 36.7 0.089 0.000 0.089 0.0 0.0 0.089
0.0 78047 4.02 283.02 0.0 0.0 36.7 0.089 0.000 0,089 0.0 0.0 0.089
0.0 78031 4.02 283.02 0.0 0.0 36.7 0.089 0.000 0.089 0.0 0.0 0.089
0.0 78015 4.01 283.01 0.0 0.0 36.7 0.088 0.000 0.088 0.0 0.0 0.088
0.0 78000 4.01 283.01 0.0 0.0 36.7 0.088 0.000 0.088 0.0 0.0 0.088
0.0 77984 4.01 283.01 0.0 0.0 36.7 0.088 0.000 0.088 0.0 0.0 0.088
0.0 77968 4.01 283.01 0.0 0.0 36.7 0.088 0.000 0.088 0.0 0.0 0.088
0.0 77952 4.01 283.01 0.0 0.0 36.7 0.088 0.000 0.088 0.0 0.0 0.088
0.0 77936 4.01 283.01 0.0 0.0 36.7 0.088 0.000 0.088 0.0 0.0 0.088
0.0 77920 4.01 283.01 0.0 0.0 36.7 0.087 0.000 0.087 0.0 0.0 0.087
0.0 77905 4.01 283.01 0.0 0.0 36.7 0.087 0.000 0.087 0.0 0.0 0.087
0.0 77889 4.01 283.01 0.0 0.0 36.7 0,087 0.000 0,087 0.0 0.0 0.087
0.0 77873 4.01 283.01 0.0 0.0 36.7 0.087 0.000 0.087 0.0 0.0 0.087
0.0 77858 4.01 283.01 0.0 0.0 36.7 0.087 0.000 0.087 0.0 0.0 0.087
0.0 77842 4.01 283.01 0.0 0.0 36.7 0.087 0.000 0.087 0.0 0.0 0.087
0.0 77826 4.01 283.01 0.0 0.0 36.7 0.086 0.000 0.086 0.0 0.0 0.086
0.0 77811 4.01 283.01 0.0 0.0 36.7 0.086 0.000 0.086 0.0 0.0 0.086
0.0 77795 4.01 283.01 0.0 0.0 36.7 0.086 0.000 0.086 0.0 0.0 0.086
0.0 77780 4.01 283.01 0.0 0.0 36.7 0.086 0.000 0.086 0.0 0.0 0.086
0.0 77764 4.01 283.01 0.0 0.0 36.7 0.086 0.000 0.086 0.0 0.0 0.086
0.0 77749 4.01 283.01 0.0 0.0 36.7 0.086 0.000 0.086 0.0 0.0 0.086
0.0 77734 4.01 283.01 0.0 0.0 36.7 0.086 0.000 0.086 0.0 0.0 0.086
0.0 77718 4.01 283.01 0.0 0.0 36.7 0.085 0.000 0.085 0.0 0.0 0.085
0.0 77703 4.00 283.00 0.0 0.0 36.7 0.085 0.000 0.085 0.0 0.0 0.085
0.0 77687 4.00 283.00 0.0 0.0 36.7 0.085 0.000 0.085 0.0 0.0 0.085
0.0 77672 4.00 283.00 0.0 0.0 36.7 0.085 0.000 0.085 0.0 0.0 0.085
0.0 77657 4.00 283.00 0.0 0.0 36.7 0.085 0.000 0.085 0.0 0.0 0.085
0.0 77642 4.00 283.00 0.0 0.0 36.7 0.085 0.000 0.085 0.0 0.0 0.085
0.0 77626 4.00 283.00 0.0 0.0 36.7 0.084 0.000 0.084 0.0 0.0 0.084
0.0 77611 4.00 283.00 0.0 0.0 36.7 0.084 0.000 0.084 0.0 0.0 0.084
0.0 77596 4.00 283.00 0.0 0.0 36.6 0.084 0.000 0.084 0.0 0.0 0.084
0.0 77581 4.00 283.00 0.0 0.0 36.6 0.084 0.000 0.084 0.0 0.0 0.084
0.0 77566 4.00 283.00 0.0 0.0 36.6 0.084 0,000 0.084 0.0 0.0 0.084
0.0 77551 4.00 283.00 0.0 0.0 36.6 0.084 0.000 0.084 0.0 0.0 0.084
0.0 77536 4,00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
0.0 77536 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
0.0 77536 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
0.0 77536 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
0.0 77536 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
0.0 77536 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
Perfoma analysis of wet detention ponds in accordance with DWQ BMP's
INPUT DATA: Input data is highlighted. All other values calculated.
LOCATION: Wakefield Development
RAINFALL: Wake County, NC
2 yr 100 yr Source
Duration: (in) (in)
5 min 0.47 0.82 NOAA Hydro 35
15 min 1.01 1.81 NOAA Hydro 35
60 min 1.70 3.50 NOAA Hydro 35
24 hr 3.50 8.00 USWB TP 40
WATERSHED: 17.94 Area, acres
1305 Hydraulic Length, feet
68 Hydraulic Height, feet
0.7 Weighted Rational C
89 Weighted SCS Curve Number
6.1 Computed Time of Concentration (Tc), min., by Kirpich Eqn.
DESIGN STORM: 10 -year Return Frequency
24 -Hour Storm Duration
5.33 Depth, inches, select from DDFIDF page based on Duration and Return Freq.
6.94 Intensity, inches/hour, select from DDFIDF page based on Tc and Return Freq.
HYDROGRAPH: 87.15 Computed Peak Flow by Rational, cfs
1.24 S=1000/CN-10
4.09 Depth of Runoff, inches
266,259.13 Volume of Runoff, cf
36.61 Time to Peak, min.
STAGE-STORAGE: 8208 Ks, constant
1.62 b, exponent
279 Reference Elevation, feet
STAGE-DISCHARGE: 6 Riser Diameter, feet
285 Riser Crest Elev., feet
3.33 Riser Weir Coeff.
0.65 Riser Orifice Coeff.
2.00 Barrel Diameter, feet
279 Barrel Invert Elev., feet
0.65 Barrel Orifice Coeff.
0.25 Dewatering Orfice Dia, feet
283 Dewatering Orfice Elev, feet
0.6 Dewatering Orfice Coeff
ROUTING: 4 Desired Computational Interval, minutes
283 Starting Water Surface Elev.
RESULTS: 286.33 Peak Water Surface Elev., feet
1.33 Depth over Riser Crest, feet
0.00 Depth over E. Spillway, feet
0.00 Depth over Top of Dam, feet
287 E. Spillway Crest Elev., feet
40 E. Spillway Crest Width, feet
3.33 E. Spillway Weir Coeff.
289 Top of Dam Elev., feet
100 Top of Dam Crest Width, feet
3.33 Top of Dam Weir Coeff.
47.7 Total Peak Discharge, cfs
47.30 Primary Peak Discharge, cfs
0.44 Small Orfice Peak Discharge, cfs
0.0 E. Spill. Peak Discharge, cfs
0.0 Top of Dam Peak Discharge, cfs
VALUES BELOW ARE TRANSFERRED FROM "MAIN" SHEET. DO NOT RE-ENTER VALUES HERE. OK
87.2 Computed Peak Flow by Rational, cis 8208 Ks, constant
1.24 S=1000/CN-10 1.62 b, exponent
4.09 Depth of Runoff, inches 279 Reference Elevation, feet
266259 Volume of Runoff, cf
36.6 Time to Peak, min. 6 Riser Diameter, feet 287 E. Spillway Crest Elev., feet
285 Riser Crest Elev., feet 15 E. Spillway Crest Width, feet
4 Desired Computational Interval, minutes 3.33 Riser Weir Coeff. 3.33 E. Spillway Weir Coeff.
283 Starting Water Surface Elev. 0.65 Riser Orifice Coeff.
2.00 Barrel Diameter, feet 289 Top of Dam Elev., feet
279 Barrel Invert Elev., feet 100 Top of Dam Crest Width, feet
0.65 Barrel Orifice Coeff. 3.33 Top of Dam Weir Coeff.
0.25 Dewatering Orffce Dia, feet
283.00 Dewatering Orfice Elev, feet
0.60 Dewaterina Orfice Coeff
Riser Riser Barrel Orfice, cfs Primary Small E. Spill, Top of Total Dis.,
Time, m In flow,cfs S torage, cf Stage, ft. Elev., ft. Weir, cfs Orifice, cfs Orifice, cfs Dis., cfs Orifice, cfs cfs Dam, cfs cfs
0 0.0 77549 4.00 283.00 0.0 0.0 36.6 0.084 0.000 0.084 0.0 0.0 0.084
4 2.5 77529 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
8 9.9 78139 4.02 283.02 0.0 0.0 36.7 0.090 0.000 0.090 0.0 0.0 0.090
12 21.1 80486 4.09 283.09 0.0 0.0 37.0 0.110 0.000 0.110 0.0 0.0 0.110
16 35.0 85532 4.25 283.25 0.0 0.0 37.5 0.145 0.000 0.145 0.0 0.0 0.145
20 49.9 93900 4.50 283.50 0.0 0.0 38.4 0.187 0.000 0.187 0.0 0.0 0.187
24 64.0 105829 4.85 283.65 0.0 0.0 39.6 0.233 0.000 0.233 0.0 0.0 0.233
28 75.8 121141 5,27 284.27 0.0 0.0 41.0 0.279 0.000 0.279 0.0 0.0 0.279
32 83.8 139263 5.74 284.74 0.0 0.0 42.5 0.323 0.000 0.323 0.0 0.0 0.323
36 87.1 159294 624 285.24 7.3 71.9 44.1 0.363 7.284 0.363 0.0 0.0 7.647
40 85.3 178361 6.69 285.69 35.9 122.4 45.4 0.396 35.882 0.396 0.0 0.0 36.278
44 78.7 190132 6.96 285.96 58.8 144.3 46.2 0.415 46.228 0.415 0.0 0.0 46.643
48 68.8 197821 7.13 286.13 75.4 156.8 46.7 0.426 46.726 0.426 0.0 0.0 47.153
52 59.7 203015 7.25 286.25 87.2 164.6 47.1 0.434 47.055 0.434 0.0 0.0 47.489
56 51.8 205942 7.31 286.31 94.1 168.8 47.2 0.438 47.238 0.438 0.0 0.0 47.677
60 44.9 206927 7.33 286.33 96.4 170.2 47.3 0.439 47.300 0.439 0.0 0.0 47.739
64 39.0 206252 7.32 286.32 94.8 169.2 47.3 0.438 47.258 0.438 0.0 0.0 47.696
68 33.8 204159 7.27 286.27 89.9 166.2 47.1 0.436 47.127 0.436 0.0 0.0 47.563
72 29.3 200860 7.20 286.20 82.3 161.4 46.9 0.431 46.919 0.431 0.0 0.0 47.350
76 25.5 196537 7.10 286.10 72.6 154.6 46.6 0.425 46.644 0.425 0.0 0.0 47.068
80 22.1 191350 6.99 285.99 61.4 146.4 46.3 0.417 46.308 0.417 0.0 0.0 46.725
84 19.2 185436 6.85 285.85 49.3 136.1 45.9 0.408 45.917 0.408 0.0 0.0 46.325
88 16.6 178916 6.70 285.70 36.9 123.5 45.5 0.397 36.889 0.397 0.0 0.0 37.287
92 14.4 173957 6.59 285.59 28.2 112.9 45.1 0.389 28.182 0.389 0.0 0.0 28.571
96 12.5 170561 6.51 285.51 22.6 105.0 44.9 0.363 22.638 0.363 0.0 0.0 23.021
100 10.9 168038 6.45 285.45 16.8 98.6 44.7 0.379 18.766 0.379 0.0 0.0 19.145
104 9.4 166049 6.40 285.40 15.9 93.3 44.6 0.376 15.873 0.376 0.0 0.0 16.248
106 8.2 164410 6.36 285.36 13.6 88.6 44.5 0.373 13.604 0.373 0.0 0.0 13.977
112 7.1 163016 6.33 285.33 11.8 84.4 44.4 0.370 11.763 0.370 0.0 0.0 12.133
116 6.2 161806 6.30 285.30 10.2 80.6 44.3 0.368 10.233 0.368 0.0 0.0 10.601
120 5.3 160738 6.27 285.27 8.9 77.0 44.2 0.366 8.940 0.366 0.0 0.0 9.306
124 4.6 159785 6.25 285.25 7.8 73.7 44.1 0.364 7.834 0.364 0.0 0.0 8.199
128 4.0 158928 6.23 285.23 6.9 70.6 44.1 0.363 6.881 0.363 0.0 0.0 7.243
132 3.5 158154 6.21 285.21 6.1 67.6 44.0 0.361 6.053 0.361 0.0 0.0 6.414
136 3.0 157450 6.19 285.19 5.3 64.6 44.0 0.360 5.332 0.360 0.0 0.0 5.692
140 2.6 156810 6.18 285.18 4.7 62.2 43.9 0.359 4.701 0.359 0.0 0.0 5.060
144 2.3 156225 6.16 285.16 4.1 59.6 419 0.358 4.148 0.358 0.0 0.0 4.505
148 2.0 155690 6.15 285.15 3.7 57.2 43.8 0.357 3.661 0.357 0.0 0.0 4.018
152 1.7 155200 6.14 265.14 3.2 54.9 43.8 0.356 3.233 0.356 0.0 0.0 3.589
156 1.5 154750 6.13 285.13 2.9 52.7 43.7 0.355 2.856 0.355 0.0 0.0 3.210
160 1.3 154336 6.12 285.12 2.5 50.5 43.7 0.354 2.522 0.354 0.0 0.0 2.876
164 1.1 153955 6.11 285.11 2.2 48.5 43.7 0.353 2.228 0.353 0.0 0.0 2.581
168 1.0 153604 6.10 265.10 2.0 46.5 43.7 0.353 1.967 0.353 0.0 0.0 2.320
172 0.8 153280 6.09 285.09 1.7 44.6 43.6 0.352 1.736 0.352 0.0 0.0 2.088
176 0.7 152981 6.08 285.08 1.5 42.8 43.6 0.351 1.531 0.351 0.0 0.0 1.883
180 0.6 152705 6.08 285.06 1.3 41.0 43.6 0.351 1.350 0.351 0.0 0.0 1.701
164 0.5 152449 6.07 285.07 1.2 39.3 43.6 0.350 1.188 0.350 0.0 0.0 1.539
188 0.5 152211 6.07 285.07 1.0 37.7 43.6 0.350 1.045 0.350 0.0 0.0 1.395
192 0.4 151991 6.06 285.06 0.9 36.1 43.5 0.349 0.917 0.349 0.0 0.0 1.267
196 0.4 151786 6.05 285.05 0.8 34.5 43.5 0.349 0.804 0.349 0.0 0.0 1.153
200 0.3 151596 6.05 285.05 0.7 33.0 43.5 0.349 0.703 0.349 0.0 0.0 1.051
204 0.3 151418 6.05 285.05 0.6 31.5 43.5 0.348 0.613 0.348 0.0 0.0 0.961
208 0.2 151252 6.04 285.04 0.5 30.1 43.5 0.348 0.532 0.348 0.0 0.0 0.680
212 0.2 151097 6.04 285.04 0.5 28.7 43.5 0.348 0.461 0.348 0.0 0.0 0.808
216 0.2 150952 6.03 285.03 0.4 27.3 43.5 0.347 0.397 0.347 0.0 0.0 0.744
220 0.2 150816 6.03 285.03 0.3 25.9 43.5 0.347 0.340 0.347 0.0 0.0 0.687
224 0.1 150688 6.03 285.03 0.3 24.5 43.4 0.347 0 289 0.347 0.0 0.0 0.636
228 0.1 150567 6.02 285.02 0.2 23.2 43.4 0.347 0.243 0.347 0.0 0.0 0.590
232 0.1 150453 6.02 285.02 0.2 21.8 43.4 0.346 0.203 0.346 0.0 0.0 0.549
236 0.1 150346 6.02 265.02 0.2 20.4 43.4 0.346 0.167 0.346 0.0 0.0 0.513
240 0.1 150243 6.02 285 .02 0.1 19.0 43.4 0.346 0.135 0.346 0.0 0.0 0.481
244 0.1 150146 6.01 285 .01 0.1 17.6 43.4 0.346 0.107 0.346 0.0 0.0 0.453
248 0.1 150053 6.01 285 .01 0.1 16.1 43.4 0.346 0.082 0.346 0.0 0.0 0.428
252 0.0 149964 6.01 285 .01 0.1 14.6 43.4 0.345 0.061 0.345 0.0 0.0 0.406
256 0.0 149878 6.01 285 .01 0.0 12.9 43.4 0.345 0.042 0.345 0.0 0.0 0.387
260 0.0 149796 6.01 285 .01 0.0 11.0 43.4 0.345 0.026 0.345 0.0 0.0 0.371
264 0.0 149715 6.00 285 .00 0.0 8.9 43.4 0.345 0.014 0.345 0.0 0.0 0.358
268 0.0 149637 6.00 285 .00 0.0 6.0 43.4 0.345 0.004 0.345 0.0 0.0 0.349
272 0.0 149560 6.00 285 .00 0.0 0.0 43.4 0.345 0.000 0.345 0.0 0.0 0.345
276 0.0 149483 6.00 285 .00 0.0 0.0 43.3 0.344 0.000 0.344 0.0 0.0 0.344
280 0.0 149405 6.00 285 .00 0.0 0.0 43.3 0.344 0.000 0.344 0.0 0.0 0.344
284 0.0 149327 5.99 284. 99 0.0 0.0 43.3 0.344 0.000 0.344 0.0 0.0 0.344
288 0.0 149248 5.99 284 .99 0.0 0.0 43.3 0.344 0.000 0.344 0.0 0.0 0.344
292 0.0 149169 5.99 284. 99 0.0 0.0 43.3 0.344 0.000 0.344 0.0 0.0 0.344
296 0.0 149089 5.99 284. 99 0.0 0.0 43.3 0.344 0.000 0.344 0.0 0.0 0.344
300 0.0 149009 5.99 284. 99 0.0 0.0 43.3 0.343 0.000 0.343 0.0 0.0 0.343
304 0.0 148929 5.98 284. 98 0.0 0.0 43.3 0.343 0.000 0.343 0.0 0.0 0.343
308 0.0 148849 5.98 284. 98 0.0 0.0 43.3 0.343 0.000 0.343 0.0 0.0 0.343
312 0.0 148768 5.98 284. 98 0.0 0.0 43.3 0.343 0.000 0.343 0.0 0.0 0.343
316 0.0 148687 5.98 284. 98 0.0 0.0 43.3 0.343 0.000 0.343 0.0 0.0 0.343
320 0.0 148606 5.98 284. 98 0.0 0.0 43.3 0.343 0.000 0.343 0.0 0.0 0.343
324 0.0 148525 5.97 284. 97 0.0 0.0 43.3 0.342 0.000 0.342 0.0 0.0 0.342
328 0.0 148444 5.97 284. 97 0.0 0.0 43.3 0.342 0.000 0.342 0.0 0.0 0.342
332 0.0 148362 5.97 284. 97 0.0 0.0 43.3 0.342 0.000 0.342 0.0 0.0 0.342
336 0.0 148281 5.97 284. 97 0.0 0.0 43.3 0.342 0.000 0.342 0.0 0.0 0.342
340 0.0 148199 5.97 284. 97 0.0 0.0 43.3 0.342 0.000 0.342 0.0 0.0 0.342
344 0.0 148118 5.96 284. 96 0.0 0.0 43.2 0.342 0.000 0.342 0.0 0.0 0.342
348 0.0 148036 5.96 284. 96 0.0 0.0 43.2 0.341 0.000 0.341 0.0 0.0 0.341
352 0.0 147955 5.96 284. 96 0.0 0.0 43.2 0.341 0.000 0.341 0.0 0.0 0.341
356 0.0 147873 5.96 284. 96 0.0 0.0 43.2 0.341 0.000 0.341 0.0 0.0 0.341
360 0.0 147792 5.96 284. 96 0.0 0.0 43.2 0.341 0.000 0.341 0.0 0.0 0.341
364 0.0 147710 5.95 284. 95 0.0 0.0 43.2 0.341 0.000 0.341 0.0 0.0 0.341
368 0.0 147628 5.95 284. 95 0.0 0.0 43.2 0.341 0.000 0.341 0.0 0.0 0.341
0.0 79052 4.05 283.05 0.0 0.0 36.8 0.098 0.000 0.098 0.0 0.0 0.098
0.0 79029 4.05 283.05 0.0 0.0 36.8 0.098 0.000 0.098 0.0 0.0 0.098
0.0 79005 4.05 283.05 0.0 0.0 36.8 0.098 0.000 0.098 0.0 0.0 0.098
0.0 78982 4.05 283.05 0.0 0.0 36.8 0.098 0.000 0.098 0.0 0.0 0.098
0.0 78958 4.04 283.04 0.0 0.0 36.8 0.097 0.000 0.097 0.0 0.0 0.097
0.0 78935 4.04 283.04 0.0 0.0 36.8 0.097 0.000 0.097 0.0 0.0 0.097
0.0 78911 4.04 283.04 0.0 0.0 36.8 0.097 0.000 0.097 0.0 0.0 0.097
0.0 78888 4.04 283.04 0.0 0.0 36.8 0.097 0.000 0.097 0.0 0.0 0.097
0.0 78865 4.04 283.04 0.0 0.0 36.8 0.097 0.000 0.097 0.0 0.0 0.097
0.0 78842 4.04 283.04 0.0 0.0 36.8 0.096 0.000 0.096 00 0.0 0.096
0.0 78819 4.04 283.04 0.0 0.0 36.8 0.096 0.000 0.096 0.0 0.0 0.096
0.0 78796 4.04 283.04 0.0 0.0 36.8 0.096 0.000 0.096 0.0 0.0 0.096
0.0 78773 4.04 283.04 0.0 0.0 36.8 0.096 0.000 0.096 0.0 0.0 0.096
0.0 78750 4.04 283.04 0.0 0.0 36.8 0.095 0.000 0.095 0.0 0.0 0.095
0.0 78727 4.04 283.04 0.0 0.0 36.8 0.095 0.000 0.095 0.0 0.0 0.095
0.0 78704 4.04 283.04 0.0 0.0 36.8 0.095 0.000 0.095 0.0 0.0 0.095
0.0 78681 4.04 283.04 0.0 0.0 36.8 0.095 0.000 0.095 0.0 0.0 0.095
0.0 78658 4.04 283.04 0.0 0.0 36.8 0.095 0.000 0.095 0.0 0.0 0.095
0.0 78636 4.03 283.03 0.0 0.0 36.8 0.094 0.000 0.094 0.0 0.0 0.094
0.0 78613 4.03 283.03 0.0 0.0 36.8 0.094 0.000 0.094 0.0 0.0 0.094
0.0 78590 4.03 283.03 0.0 0.0 36.8 0.094 0.000 0.094 0.0 0.0 0.094
0.0 78568 4.03 283.03 0.0 0.0 36.8 0.094 0.000 0.094 0.0 0.0 0.094
0.0 78545 4.03 283.03 0.0 0.0 36.8 0.094 0.000 0.094 0.0 0.0 0.094
0.0 78523 4.03 283.03 0.0 0.0 36.8 0.093 0.000 0.093 0.0 0.0 0.093
0.0 78500 4.03 283.03 0.0 0.0 36.8 0.093 0.000 0.093 0.0 0.0 0.093
0.0 78478 4.03 283.03 0.0 0.0 36.8 0.093 0.000 0.093 0.0 0.0 0.093
0.0 78456 4.03 283.03 0.0 0.0 36.7 0.093 0.000 0.093 0.0 0.0 0.093
0.0 78434 4.03 283.03 0.0 0.0 36.7 0.092 0.000 0.092 0.0 0.0 0.092
0.0 78411 4.03 283.03 0.0 0.0 36.7 0.092 0.000 0.092 0.0 0.0 0.092
0.0 78389 4.03 283.03 0.0 0.0 36.7 0.092 0.000 0.092 0.0 0.0 0.092
0.0 78367 4.03 283.03 0.0 0.0 36.7 0.092 0.000 0.092 0.0 0.0 0.092
0.0 78345 4.03 283.03 0.0 0.0 36.7 0.092 0.000 0.092 0.0 0.0 0.092
0.0 78323 4.02 283.02 0.0 0.0 36.7 0.091 0.000 0.091 0.0 0.0 0.091
0.0 78301 4.02 283.02 0.0 0.0 36.7 0.091 0.000 0.091 0.0 0.0 0.091
0.0 78279 4.02 283.02 0.0 0.0 36.7 0.091 0.000 0.091 0.0 0.0 0.091
0.0 78257 4.02 283.02 0.0 0.0 36.7 0.091 0.000 0.091 0.0 0.0 0.091
0.0 78236 4.02 283.02 0.0 0.0 36.7 0.091 0.000 0.091 0.0 0.0 0.091
0.0 78214 4.02 283.02 0.0 0.0 36.7 0.090 0.000 0.090 0.0 0.0 0.090
0.0 78192 4.02 283.02 0.0 0.0 36.7 0.090 0.000 0.090 0.0 0.0 0.090
0.0 78171 4.02 283.02 0.0 0.0 36.7 0.090 0.000 0.090 0.0 0.0 0.090
0.0 78149 4.02 283.02 0.0 0.0 36.7 0.090 0.000 0.090 0.0 0.0 0.090
0.0 78127 4.02 283.02 0.0 0.0 36.7 0.090 0.000 0.090 0.0 0.0 0.090
0.0 78106 4.02 283.02 0.0 0.0 36.7 0.089 0.000 0.089 0.0 0.0 0.089
0.0 78085 4.02 283.02 0.0 0.0 36.7 0.089 0.000 0.089 0.0 0.0 0.089
0.0 78063 4.02 283.02 0.0 0.0 36.7 0.089 0.000 0.089 0.0 0.0 0.089
0.0 78042 4.02 283.02 0.0 0.0 36.7 0.089 0.000 0.089 0.0 0.0 0.089
0.0 78021 4.02 283.02 0.0 0.0 36.7 0.088 0.000 0.088 0.0 0.0 0.088
0.0 77999 4.01 283.01 0.0 0.0 36.7 0.088 0.000 0.088 0.0 0.0 0.088
0.0 77978 4.01 283.01 0.0 0.0 36.7 0.088 0.000 0.088 0.0 0.0 0.088
0.0 77957 4.01 283.01 0.0 0.0 36.7 0.088 0.000 0.088 0.0 0.0 0.088
0.0 77936 4.01 283.01 0.0 0.0 36.7 0.088 0.000 0.088 0.0 0.0 0.088
0.0 77915 4.01 283.01 0.0 0.0 36.7 0.087 0.000 0.087 0.0 0.0 0.087
0.0 77894 4.01 283.01 0.0 0.0 36.7 0.087 0.000 0.087 0.0 0.0 0.087
0.0 77873 4.01 283.01 0.0 0.0 36.7 0.087 0.000 0.087 0.0 0.0 0.087
0.0 77852 4.01 283.01 0.0 0.0 36.7 0.087 0.000 0.087 0.0 0.0 0.087
0.0 77831 4.01 283.01 0.0 0.0 36.7 0.087 0.000 0.087 0.0 0.0 0.087
0.0 77811 4.01 283.01 0.0 0.0 36.7 0.086 0.000 0.086 0.0 0.0 0.086
0.0 77790 4.01 283.01 0.0 0.0 36.7 0.086 0.000 0.085 0.0 0.0 0.086
0.0 77769 4.01 283.01 0.0 0.0 36.7 0.086 0.000 0.086 0.0 0.0 0.086
0.0 77749 4.01 263.01 0.0 0.0 36.7 0.086 0.000 0.086 0.0 0.0 0.086
0.0 77728 4.01 283.01 0.0 0.0 36.7 0.085 0.000 0.085 0.0 0.0 0.085
0.0 77708 4.01 283.01 0.0 0.0 36.7 0.085 0.000 0.085 0.0 0.0 0.085
0.0 77687 4.00 283.00 0.0 0.0 36.7 0.085 0.000 0.085 0.0 0.0 0.085
0.0 77667 4.00 283.00 0.0 0.0 36.7 0.085 0.000 0.085 0.0 0.0 0.085
0.0 77646 4.00 283.00 0.0 0.0 36.7 0.085 0.000 0.085 0.0 0.0 0.085
0.0 77626 4.00 283.00 0.0 0.0 36.7 0.084 0.000 0.084 0.0 0.0 .0.084
0.0 77606 4.00 283.00 0.0 0.0 36.6 0.084 0.000 0.084 0.0 0.0 0.084
0.0 77586 4.00 283.00 0.0 0.0 36.6 0.084 0.000 0.084 0.0 0.0 0.084
0.0 77565 4.00 283.00 0.0 0.0 36.6 0.084 0.000 0.084 0.0 0.0 0.084
0.0 77545 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
0.0 77545 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
0.0 77545 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
0.0 77545 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
0.0 77545 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
0.0 77545 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
HRM-SWM.WB2 JAKT Nov 1999
Perfoms analysis of wet detention ponds in accordance with DWO BMP's
INPUT DATA: Input data is highlighted. All other values calculated.
LOCATION: Wakefield Development
RAINFALL: Wake County, NC
2 yr 100 yr Source
Duration: (in) (in)
5 min 0.47 0.82 NOAA Hydro 35
15 min 1.01 1.81 NOAA Hydro 35
60 min 1.70 3.50 NOAA Hydro 35
24 hr 3.50 8.00 USWB TP 40
WATERSHED: 17.94 Area, acres
1305 Hydraulic Length, feet
68 Hydraulic Height, feet
0.7 Weighted Rational C
89 Weighted SCS Curve Number
6.1 Computed Time of Concentration (Tc), min., by Kirpich Eqn.
DESIGN STORM: 100 -year Return Frequency
24 -Hour Storm Duration
9.70 Depth, inches, select from DDFIDF page based on Duration and Return Freq.
8.67 Intensity, inches/hour, select from DDFIDF page based on Tc and Return Freq.
HYDROGRAPH: 108.88 Computed Peak Flow by Rational, cfs
1.24 S=1000/CN-10
8.36 Depth of Runoff, inches
544,406.55 Volume of Runoff, cf
59.92 Time to Peak, min.
STAGE-STORAGE: 8208 Ks, constant
1.62 b, exponent
279 Reference Elevation, feet
STAGE-DISCHARGE: 6 Riser Diameter, feet
285 Riser Crest Elev., feet
3.33 Riser Weir Coeff.
0.65 Riser Orifice Coeff.
2.00 Barrel Diameter, feet
279 Barrel Invert Elev., feet
0.65 Barrel Orifice Coeff.
0.33 Dewatering Orfice Dia, feet
283 Dewatering Orfice Elev, feet
0.6 Dewatering Orfice Coeff
ROUTING: 6 Desired Computational Interval, minutes
283 Starting Water Surface Elev.
RESULTS: 287.50 Peak Water Surface Elev., feet
2.50 Depth over Riser Crest, feet
0.50 Depth over E. Spillway, feet
0.00 Depth over Top of Dam, feet
287 E. Spillway Crest Elev., feet
40 E. Spillway Crest Width, feet
3.33 E. Spillway Weir Coeff.
289 Top of Dam Elev., feet
100 Top of Dam Crest Width, feet
3.33 Top of Dam Weir Coeff.
98.4 Total Peak Discharge, cfs
50.51 Primary Peak Discharge, cfs
0.89 Small Orfice Peak Discharge, cfs
47.0 E. Spill. Peak Discharge, cfs
0.0 Top of Dam Peak Discharge, cfs
LIES BELOW ARE TRANSFERRED FROM "MAIM" SHEET. DO NOT RE-ENTER VALUES HERE. OK
108.9 Computed Peak Flow by Rational, cfs 8208 Ks, constant
1.24 S=1000/CN-10 1.62 b, exponent
8.36 Depth of Runoff, inches 279 Reference Elevation, feet
544407 Volume of Runoff, cf
59.9 Time to Peak, min. 6 Riser Diameter, feet 287 E. Spillway Crest Elev., feet
285 Riser Crest Elev., feet 15 E. Spillway Crest Width, feet
6 Desired Computational interval, minutes 3.33 Riser Weir Coeff. 3.33 E. Spillway Weir Coeff.
283 Starting Water Surface Elev. 0.65 Riser Orifice Coeff.
2.00 Barrel Diameter, feet 289 Top of Dam Elev., feet
279 Barrel Invert Elev., feet 100 Top of Dam Crest Width, feet
0.65 Barrel Orifice Coeff. 3.33 Top of Dam Weir Coeff.
0.33 Dewatering Orfice Dia, feet
283.00 Dewatering Orfice Elev, feet
0.60 Dewatering Orfice Coeff
Storage, Riser Riser Barrel Primary Dis., E. Spill, Top of Total Dis.,
Time, min. Inflow,cfs cf Stage, ft. Elev., ft. Weir, cfs Orifice, cfs Orifice, cfs Small Orfice cfs Small Orefi cfs Dam, cfs cis
0 0.0 77549 4.00 283.00 0.0 0.0 36.6 0.167 0.000 0.167 0.0 0.0 0.167
6 2.7 77488 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
12 10.4 78450 4.03 283.03 0.0 0.0 36.7 0.181 0.000 0.181 0.0 0.0 0.181
18 22.5 82138 4.14 283.14 0.0 0.0 37.2 0.229 0.000 0.229 0.0 0.0 0.229
24 37.7 90154 4.39 283.39 0.0 0.0 38.0 0.307 0.000 0.307 0.0 0.0 0.307
30 54.6 103617 4.78 283.78 0.0 0.0 39.4 0.401 0.000 0.401 0.0 0.0 0.401
36 71.4 123112 5.32 284.32 0.0 0.0 41.2 0.502 0.000 0.502 0.0 0.0 0.502
42 86.6 148633 5.98 284.98 0.0 0.0 43.3 0.603 0.000 0.603 0.0 0.0 0.603
48 98.6 179580 6.72 285.72 38.1 124.9 45.5 0.699 38.106 0.699 0.0 0.0 38.806
54 106.3 201102 7.20 286.20 82.8 161.8 46.9 0356 46.935 0.756 0.0 0.0 47.691
60 108.9 222193 7.66 286.66 134.3 190.0 48.2 0.805 48.226 0.805 0.0 0.0 49.031
66 106.1 243738 8.11 287.11 192.5 214.3 49.5 0.852 49.464 0.852 1.8 0.0 52.158
72 98.3 263170 8.50 287.50 248.7 233.4 50.5 0.890 50.520 0.890 17.9 0.0 69.288
78 87.0 273620 8.71 287.71 280.2 242.8 51.1 0.909 51.067 0.909 29.9 0.0 81.923
84 76.4 275446 8.75 287.75 285.8 244.4 51.2 0.913 51.161 0.913 32.2 0.0 84.312
90 67.1 272588 8.69 287.69 277.0 241.9 51.0 0.907 51.013 0.907 28.7 0.0 80.594
96 58.9 267713 8.59 287.59 262.3 237.6 50.8 0.898 50.759 0.898 22.9 0.0 74.550
102 51.7 262067 8.48 287.48 245.5 232.4 50.5 0.888 50.461 0.888 167 0.0 68.069
108 45.4 256166 8.36 287.36 228.1 226.8 50.1 0.876 50.145 0.876 11.0 0.0 61.979
114 39.8 250191 8.24 287.24 210.8 220.9 49.8 0.865 49.820 0.865 6.0 0.0 56.658
120 35.0 244135 8.12 287.12 193.6 214.7 49.5 0.852 49.486 0.852 2.0 0.0 52.388
126 30.7 237866 7.99 286.99 176.2 208.0 49.1 0.839 49.133 0.839 0.0 0.0 49.973
132 27.0 230929 7.85 286.85 157.3 200.3 48.7 0.825 48.737 0.825 0.0 0.0 49.561
138 23.7 222792 7.67 286.67 135.9 190.8 48.3 0.807 48.261 0.807 0.0 0.0 49.068
144 20.8 213647 7.48 286.48 112.7 179.3 47.7 0.786 47.713 0.786 0.0 0.0 48.499
150 18.2 203668 7.26 286.26 88.7 165.5 47.1 0.762 47.096 0.762 0.0 0.0 47.858
156 16.0 193006 7.02 286.02 64.9 149.1 46.4 0.735 46.416 0.735 0.0 0.0 47.151
162 14.1 181797 6.77 285.77 42.2 129.3 45.7 0.705 42.249 0.705 0.0 0.0 42.955
168 12.3 171395 6.53 285.53 24.0 107.0 45.0 0.676 23.967 0.676 0.0 0.0 24.642
174 10.8 166968 6.42 285.42 17.2 95.8 44.6 0.662 17.191 0.662 0.0 0.0 17.853
180 9.5 164442 6.36 285.36 13.6 88.7 44.5 0.655 13.648 0.655 0.0 0.0 14.303
186 8.4 162719 6.32 285.32 11.4 83.5 44.3 0.649 11.381 0.649 0.0 0.0 12.030
192 7.3 161395 6.29 285.29 9.7 79.2 44.2 0.645 9.730 0.645 0.0 0.0 10.375
198 6.4 160300 6.26 285.26 8.4 75.5 44.2 0.642 8.427 0.642 0.0 0.0 9.069
204 5.7 159354 6.24 285.24 7.3 72.2 44.1 0.639 7.350 0.639 0.0 0.0 7.988
210 5.0 158513 6.22 285.22 6.4 69.0 44.0 0.636 6.433 0.636 0.0 0.0 7.069
216 4.4 157755 6.20 285.20 5.6 66.1 44.0 0.633 5.640 0.633 0.0 0.0 6.274
222 3.8 157065 6.18 285.18 4.9 63.2 43.9 0.631 4.949 0.631 0.0 0.0 5.580
228 3.4 156433 6.17 285.17 4.3 60.5 43.9 0.629 4.342 0.629 0.0 0.0 4.971
234 2.9 155853 6.15 285.15 3.8 57.9 43.8 0.627 3.807 0.627 0.0 0.0 4.434
240 2.6 155318 6.14 285.14 3.3 55.4 43.8 0.625 1335 0.625 0.0 0.0 3.960
246 2.3 154824 6.13 285.13 2.9 53.0 43.8 0.624 2.917 0.624 0.0 0.0 3.541
252 2.0 154367 6.12 285.12 2.5 50.7 43.7 0.622 2.547 0.622 0.0 0.0 3.170
258 1.8 153945 6.11 285.11 2.2 48.4 43.7 0.621 2.220 0.621 0.0 0.0 2.841
264 1.5 153553 6.10 285.10 1.9 46.2 43.7 0.620 1.930 0.620 0.0 0.0 2.549
270 1.4 153188 6.09 285.09 1.7 44.1 43.6 0.618 1.672 0.618 0.0 0.0 2.291
276 1.2 152850 6.08 285.08 1.4 41.9 43.6 0.617 1.444 0.617 0.0 0.0 2.061
282 1.0 152534 6.07 285.07 1.2 39.9 43.6 0.616 1.242 0.616 0.0 0.0 1.858
288 0.9 152240 6.07 285.07 1.1 37.9 43.6 0.615 1.062 0.615 0.0 0.0 1.677
294 0.8 151965 6.06 285.06 0.9 35.9 43.5 0.614 0.903 0.614 0.0 0.0 1.517
300 0.7 151708 6.05 285.05 0.8 33.9 43.5 0.613 0.762 0.613 0.0 0.0 1.375
306 0.6 151466 6.05 285.05 0.6 31.9 43.5 0.612 0.637 0.612 0.0 0.0 1.249
312 0.5 151239 6.04 285.04 0.5 30.0 43.5 0.612 0.526 0.612 0.0 0.0 1.138
318 0.5 151025 6.04 285.04 0.4 28.0 43.5 0.611 0.428 0.611 0.0 0.0 1.039
324 0.4 150822 6.03 285.03 0.3 26.0 43.5 0.610 0.342 0.610 0.0 0.0 0.953
330 0.4 150630 6.03 285.03 0.3 23.9 43.4 0.610 0.267 0.610 0.0 0.0 0.876
336 0.3 150447 6.02 285.02 0.2 21.7 43.4 0.609 0.201 0.609 0.0 0.0 0.810
342 0.3 150271 6.02 285.02 0.1 19,4 434 0.608 0.144 0.608 0.0 0.0 0.752
348 0.2 150103 6.01 285.01 0.1 16.9 43.4 0,608 0.095 0.608 0.0 0.0 0.703
354 0.2 149939 6.01 285.01 0.1 14.1 43.4 0.607 0.055 0.607 0.0 0.0 0.662
360 0.2 149779 6.01 285 .01 0.0 10.6 43.4 0.607 0.024 0.607 0.0 0.0 0.630
366 0.2 149621 6.00 285 .00 0.0 5.3 43.4 0.606 0.003 0.606 0.0 0.0 0.609
372 0.1 149463 6.00 285 .00 0.0 0.0 43.3 0.606 0.000 0.606 0.0 0.0 0.606
378 0.1 149298 5.99 284 .99 0.0 0.0 43.3 0.605 0.000 0.605 0.0 0.0 0.605
384 0.1 149127 5.99 284 .99 0.0 0.0 43.3 0.604 0.000 0.604 0.0 0.0 0.604
390 0.1 148950 5.98 284 .98 0.0 0.0 43.3 0.604 0.000 0.604 0.0 0.0 0.604
396 0.1 148769 5.98 284 .98 0.0 0.0 43.3 0.603 0.000 0.603 0.0 0.0 0.603
402 0.1 148583 5.98 284 .98 0.0 0.0 43.3 0.603 0.000 0.603 0.0 0.0 0.603
408 0.1 148394 5.97 284 .97 0.0 0.0 43.3 0.602 0.000 0.602 0.0 0.0 0.602
414 0.1 148202 5.97 284 .97 0.0 0.0 43.3 0.601 0.000 0.601 0.0 0.0 0.601
420 0.1 148006 5.96 284 .96 0.0 0.0 43.2 0.601 0.000 0.601 0.0 0.0 0.601
426 0.0 147809 5.96 284 .96 0.0 0.0 43.2 0.600 0.000 0.600 0.0 0.0 0.600
432 0.0 147610 5.95 284 .95 0.0 0.0 43.2 0.599 0.000 0.599 0.0 0.0 0.599
438 0.0 147408 5.95 284 .95 0.0 0.0 43.2 0.598 0.000 0.598 0.0 0.0 0.598
444 0.0 147206 5.94 284 .94 0.0 0.0 43.2 0.598 0.000 0.598 0.0 0.0 0.598
450 0.0 147002 5.94 284 .94 0.0 0.0 43.2 0.597 0.000 0.597 0.0 0.0 0.597
456 0.0 146797 5.93 284 .93 0.0 0.0 43.1 0.596 0.000 0.596 0.0 0.0 0.596
462 0.0 146590 5.93 284 .93 0.0 0.0 43.1 0.596 0.000 0.596 0.0 0.0 0.596
468 0.0 146384 5.92 284 .92 0.0 0.0 43.1 0.595 0.000 0.595 0.0 0.0 0.595
474 0.0 146176 5.92 284 .92 0.0 0.0 43.1 0.594 0.000 0.594 0.0 0.0 0.594
480 0.0 145968 5.91 284 .91 0.0 0.0 43.1 0.593 0.000 0.593 0.0 0.0 0.593
486 0.0 145760 5.91 284 .91 0.0 0.0 43.1 0.593 0.000 0.593 0.0 0.0 0.593
492 0.0 145551 5.90 284 .90 0.0 0.0 43.0 0.592 0.000 0.592 0.0 0.0 0.592
498 0.0 145342 5.89 284 .89 0.0 0.0 43.0 0.591 0.000 0.591 0.0 0.0 0.591
3204 0.0 79808 4.07 283.07 0.0 0.0 36.9 0.200 0.000 0.200 0.0 0.0 0.200
3210 0.0 79736 4.07 283.07 0.0 0.0 36.9 0.199 0.000 0.199 0.0 0.0 0.199
3216 0.0 79664 4.07 283.07 0.0 0.0 36.9 0.198 0.000 0.198 0.0 0.0 0.198
3222 0.0 79592 4.06 283.06 0.0 0.0 36.9 0.197 0.000 0.197 0.0 0.0 0.197
3228 0.0 79521 4.06 283.06 0.0 0.0 36.9 0.196 0.000 0.196 0.0 0.0 0.196
3234 0.0 79451 4.06 283.06 0.0 0.0 36.9 0.195 0.000 0.195 0.0 0.0 0.195
3240 0.0 79380 4.06 283.06 0.0 0.0 36.9 0.194 0.000 0.194 0.0 0.0 0.194
3246 0.0 79310 4.06 283.06 0.0 0.0 36.8 0.194 0.000 0.194 0.0 0.0 0.194
3252 0.0 79241 4.05 283.05 0.0 0.0 36.8 0.193 0.000 0.193 0.0 0.0 0.193
3258 0.0 79171 4.05 283.05 0.0 0.0 36.8 0.192 0.000 0.192 0.0 0.0 0.192
3264 0.0 79102 4.05 283.05 0.0 0.0 36.8 0.191 0.000 0.191 0.0 0.0 0.191
3270 0.0 79034 4.05 283.05 0.0 0.0 36.8 0.190 0.000 0.190 0.0 0.0 0.190
3276 0.0 78965 4.04 283.04 0.0 0.0 36.8 0.189 0.000 0.189 0.0 0.0 0.189
3282 0.0 78897 4.04 283.04 0.0 0.0 36.8 0.188 0.000 0.188 0.0 0.0 0.188
3288 0.0 78830 4.04 283.04 0.0 0.0 36.8 0.187 0.000 0.187 0.0 0.0 0.187
3294 0.0 78763 4.04 283.04 0.0 0.0 36.8 0.186 0.000 0.186 0.0 0.0 0.186
3300 0.0 78696 4.04 283.04 0.0 0.0 36.8 0.185 0.000 0.185 0.0 0.0 0.185
3306 0.0 78629 4.03 283.03 0.0 0.0 36.8 0.184 0.000 0.184 0.0 0.0 0.184
3312 0.0 78563 4.03 283.03 0.0 0.0 36.8 0.183 0.000 0.183 0.0 0.0 0.183
3318 0.0 78497 4.03 283.03 0.0 0.0 36.8 0.182 0.000 0.182 0.0 0.0 0.182
3324 0.0 78432 4.03 283.03 0.0 0.0 36.7 0.181 0.000 0.181 0.0 0.0 0.181
3330 0.0 78367 4.03 283.03 0.0 0.0 36.7 0.180 0.000 0.180 0.0 0.0 0.180
3336 0.0 78302 4.02 283.02 0.0 0.0 36.7 0.179 0.000 0.179 0.0 0.0 0.179
3342 0.0 78237 4.02 283.02 0.0 0.0 36.7 0.178 0.000 0.178 0.0 0.0 0.178
3348 0.0 78173 4.02 283.02 0.0 0.0 36.7 0.177 0.000 0.177 0.0 0.0 0.177
3354 0.0 78109 4.02 283.02 0.0 0.0 36.7 0.176 0.000 0.176 0.0 0.0 0.176
3360 0.0 78046 4.02 283.02 0.0 0.0 36.7 0.175 0.000 0.175 0.0 0.0 0.175
3366 0.0 77983 4.01 283.01 0.0 0.0 36.7 0.174 0.000 0.174 0.0 0.0 0.174
3372 0.0 77920 4.01 283.01 0.0 0.0 36.7 0.173 0.000 0.173 0.0 0.0 0.173
3378 0.0 77858 4.01 283.01 0.0 0.0 36.7 0.172 0.000 0.172 0.0 0.0 0.172
3384 0.0 77796 4.01 283.01 0.0 0.0 36.7 0.171 0.000 0.171 0.0 0.0 0.171
3390 0.0 77734 4.01 283.01 0.0 0.0 36.7 0.170 0.000 0.170 0.0 0.0 0.170
3396 0.0 77673 4.00 283.00 0.0 0.0 36.7 0.169 0.000 0.169 0.0 0.0 0.169
3402 0.0 77612 4.00 283.00 0.0 0.0 36.7 0.168 0.000 0.168 0.0 0.0 0.168
3408 0.0 77552 4.00 283.00 0.0 0.0 36.6 0.167 0.000 0.167 0.0 0.0 0.167
3414 0.0 77491 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
3420 0.0 77491 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
3426 0.0 77491 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
3432 0.0 77491 4.00 28100 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
3438 0.0 77491 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
3444 0.0 77491 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
3450 0.0 77491 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
3456 0.0 77491 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
3462 0.0 77491 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
3468 0.0 77491 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
3474 0.0 77491 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
Environmental Consultants, PA
Road - Raleigh, North Carolina 27614 - Phone: [phone] - Fax: [phone]
June 21, 2001
NCDENR-DWQ
Attn: Mr. John Dorney
2321 Crabtree Blvd.
Parkview Building
Raleigh, NC 27615
US Army Corps of Engineers
Attn: Ms. Amanda Jones
6508 Falls of the Neuse Rd., Ste. 120
Raleigh, NC 27615
RE: Nationwide Permit 43/401 Water Quality Certification/Buffer Compliance Request
Wakefield Commercial Tract
Wake Forest, Wake County, North Carolina
(UTM Coordinates: Zone 17, 721700, 3981330)
S&EC Project #: 00-5973 uni 0947
Dear Mr. Dorney and Ms. Jones:
The purpose of this letter is to request the authorization of Nationwide Permit 43 for
impacts to two intermittent stream channels (0.031 acre). The project is located in Wake
County North of the Neuse River, west of Highway 1 and east of Falls of the Neuse Road
near Wake Forest, NC (see attached vicinity map).
All impacts will result from the fill of jurisdictional waters for construction of a
stormwater pond for commercial development (see site plan). The dimensions and other
additional specific information regarding the stormwater basin are included in the
enclosed calculation report prepared by John Tucker, Consulting Engineer (phone: 567- -,
0483).
Previous project impacts to jurisdictional areas and current proposed impacts are =?
provided in the attached Pre-construction Notification from. Previous impacts were
permitted under Nationwide Permits 12, 13, 14, 26, and 39 (Action ID# 199602047,
199920369, 199920370, 199920371, 200120770). DWQ does not require stream
mitigation for pond construction impacts to streams. Based on a site meeting in fall 1997
Charlotte Office: Greensboro Office: Hicks Office:
PMB 291, 3020-I Prosperity Church Road 3817-E Lawndale Drive 910 Boston Road
Charlotte, NC 28269-7197 Greensboro, NC 27455 Taylorsville, NC 28681
Phone: [phone] Phone: [phone] Phone [phone]
Fax: [phone] Fax: [phone] Fax: [phone]
June 21, 2001
S&EC Project #: 00-5973
Page 2 of 2
between Kevin Martin (S&EC) and Eric Galamb (NCDWQ), NCDWQ did not consider
these channels to be significant. Eric Alsmeyer and Ken Jolly (USAGE) also evaluated
the channels in fall 1997 and found them to be unimportant. Because the DWQ and the
Corps considered the channel features to be insignificant/unimportant, and because the
purpose of the proposed stormwater pond is to improve water quality, S&EC does not
believe stream mitigation should be required by the USACE or DWQ. NCDWQ's
current riparian buffer policy classifies the construction of ponds in natural drainage ways
as an "allowable activity" provided that a 50-ft. riparian buffer is re-established following
construction. Because the applicant intends to re-establish a 50' buffer above normal
pool elevation of the pond as required by the Neuse River Basin buffer rules, S&EC
believes no Buffer mitigation should be required. However, if buffer mitigation is
required our client proposes payment to the North Carolina Wetland Restoration
Program.
Please contact us if you have any questions or if you would like to schedule a site
meeting.
Sincerely,
.c :.?rla••?
rad Sucher
; Lout. C ,i4atlir?K ?l
Kevin C. Martin
Wetland Scientist/Soil Scientist in Training President
Attachments:
Pre-construction (PCN) notification form
USGS Site Location Map (Figure 1)
Impact Map (Figure 2)
Impact Map Blow-Up (Figure 3)
Water Quality Pond Calculation Report (DWQ only - 15 pages)
Stormwater Detention Pond Plan (DWQ only)
Agent Authorization

r ?G
Pre-Construction Notification (PCN) Application Form
For Section 404 and/or Section 10 Nationwide, Regional and General Permits, Section 401
General Water Quality Certifications, and Riparian Buffer and Watershed Buffer Rules
This form is to be used for projects qualifying for any of the U.S. Army Corps of Engineers' (USACE)
Nationwide, Regional or General Permits as required by Section 404 of the Clean Water Act and/or
Section 10 of the Rivers and Harbors Act, and for the North Carolina Division of Water Quality's
(DWQ) associated General 401 Water Quality Certifications. This form is also to be used for any
project requiring approval under any Riparian Buffer Rules implemented by the N.C. Division of Water
Quality. This form should not be used if you are requesting an Individual 404 Permit or Individual 401
Water Quality Certification. The USACE Individual Permit application form is available online at
http•//www.saw.usace.army.inil/wetlands/Pemi app.htm.
The USACE is the lead regulatory agency. To review the requirements for the use of Nationwide,
Regional or General permits, and to determine which permit applies to your project, please go to the
USACE website at http://www.saw.usace.aiiny.mil/wetlands/regtour.htm, or contact one of the field
offices listed at the end of this application. The website also lists the responsible project manager for
each county in North Carolina and provides additional information regarding the identification and
regulation of wetlands and waters of the U.S.
The DWQ issues a corresponding Certification (General or Individual), and cannot tell the applicant
which 401 Certification will apply until the 404 Permit type has been determined by the USACE.
Applicants are encouraged to visit DWQ's 401/Wetlands Unit website at
http://h2o.enr.state.nc.us/ncwetlands to read about current requirements for the 401 Water Quality
Certification Program and to determine whether or not Riparian Buffer Rules are applicable. The
applicant is also advised to read the full text of the General Certification (GC) matching the specific 404
Permit requested. In some cases, written approval for some General Certifications is not required,
provided that the applicant adheres to all conditions of the GC. Applicants lacking access to the internet
should contact DWQ's Central Office in Raleigh at [phone].
Trout Waters Coordination - Special coordination with the North Carolina Wildlife Resources
Commission (NCWRC) is also required for projects occurring in any of North Carolina's twenty-five
counties that contain trout waters. In such cases, the applicant should contact the appropriate NCWRC
regional coordinator (listed by county on the last page of this application).
Page 1 of 12
CAMA Coordination - If the project occurs in any of North Carolina's twenty coastal counties (listed on
the last page of this application) the applicant should also contact the North Carolina Division of Coastal
Management (DCM) at [phone]. DCM will determine whether or not the project involves a
designated Area of Environmental Concern, in which case DCM will act as the lead permitting agency.
In such cases, DCM will require a Coastal Area Management Act (LAMA) Permit and will coordinate
the 404/401 Permits.
USACE Permits - Submit one copy of this form, along with supporting narratives, maps, data forms,
photos, etc. to the applicable USACE Regulatory Field Office (addresses are listed at the end of this
application). Upon receipt of an application, the USACE will determine if the application is complete as
soon as possible, not to exceed 30 days. This PCN form is designed for the convenience of the applicant
to address information needs for all USACE Nationwide, Regional or General permits, as well as
information required for State authorizations, certifications, and coordination. Fully providing the
information requested on this form will result in a complete application for any of the USACE
Nationwide, Regional or General permits. To review the minimum amount of information that must be
provided for a complete PCN for each USACE Nationwide permit, see Condition 13, 65 Fed.Reg. 12893
(March 9, 2000), available at http://www.saw.usace.army.mil/Nvetlands/nwpfinalFedReg_pdf.
Processing times vary by permit and begin once the application has been determined to be complete.
Please contact the appropriate regulatory field office for specific answers to permit processing periods.
401 Water Quality Certification or Buffer Rules - All information is required unless otherwise stated
as optional. Incomplete applications will be returned. Submit seven collated copies of all USACE
Permit materials to the Division of Water Quality, 401/Wetlands Unit, 1650 Mail Service Center,
Raleigh, NC, 27699-1650. If written approval is required or specifically requested for a 401
Certification, then a non-refundable application fee is required. In brief, if project impacts include less
than one acre of cumulative wetland/water impacts and less than 150 feet cumulative impacts to
streams, then a fee of $200 is required. If either of these thresholds is exceeded, then a fee of $475 is
required. A check made out to the North Carolina Division of Water Quality, with the specific name of
the project or applicant identified, should be stapled to the front of the application package. For more
information, see the DWQ website at http://12o.eb.nr.state.nc.us/ncwetlands/fees.htm]. The fee must be
attached with the application unless the applicant is a federal agency in which case the check may be
issued from a separate office. In such cases, the project must be identifiable on the U.S. Treasury check
so that it can be credited to the appropriate project. If written approval is sought solely for Buffer Rules,
the application fee does not apply, and the applicant should clearly state (in a cover letter) that only
Buffer Rule approval is sought in writing. Wetlands or waters of the U.S. may not be impacted prior to
issuance or waiver of a Section 401 Water Quality Certification. Upon receipt of a complete application
for a 401 Certification, the Division of Water Quality has 60 days to prepare a written response to the
applicant. This may include a 401 Certification, an on-hold letter pending receipt of additional
requested information, or denial.
Page 2 of 12
Office Use Only: 0 7 Form Version April 2001
9 4
USACE Action ID No. DWQ No.
If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A" rather than
leaving the space blank.
1. Processing
1. Check all of the approval(s) requested for this project:
® Section 404 Permit
? Section 10 Permit
® 401 Water Quality Certification
® Riparian or Watershed Buffer Rules
2. Nationwide, Regional or General Permit Number(s) Requested:
43
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 Wetlands Restoration Program (NCWRP) is proposed for
mitigation of impacts (see section VIII - Mitigation), check here: ?
II. Applicant Information
1. Owner/Applicant Information
Name: Wakefield Commercial, LLC
Mailing Address: 2840 Plaza Place Suite 109
Raleigh NC 27612
Telephone Number: [phone] Fax Number:
E-mail Address:
2. Agent 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: Kevin C. Martin
Company Affiliation: Soil & Environmental Consultants Inc.
Mailing Address: 11010 Raven Ridge Road
Raleigh NC 27614
Telephone Number: [phone] Fax Number: [phone]
E-mail Address: [e-mail]
Page 3 of 12
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: Wakefield Commercial Tract
2. T.I.P. Project Number (NCDOT Only): NA
3. Property Identification Number (Tax PIN): 1739583797
4. Location
County: Wake Nearest Town: Wake Forest
Subdivision name (include phase/lot number): NA
Directions to site (include road numbers, landmarks, etc.): The project is located in Wake
County north of the Neuse River, west of Highway 1 and east of Falls of the Neuse Road
near Wake Forest, NC (see site vicinity map).
5. Site coordinates, if available (UTM or Lat/Long): Zone 17, 721700, 3981330
(Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the
coordinates for each crossing of a distinct waterbody.)
6. Describe the existing land use or condition of the site at the time of this application:
The site conditions over the entire 1900-acre project area range from undeveloped to partially
developed to developed. Some previously permitted roads and infrastructure have been
developed. Lots in some upland areas of the site have been partially or completely
developed.
7. Property size (acres): 1900 acres
8. Nearest body of water (stream/river/sound/ocean/lake): UT of Richland Creek
Page 4 of 12
9. River Basin: Neuse
(Note - this must be one of North Carolina's seventeen designated major river basins. The
River Basin map is available at http://h2o.enr.state.nc.us/adinin/inaps/.)
10. Describe the purpose of the proposed work: The purpose of this project is to construct a
stormwater detention pond to treat stormwater run-off for the site.
11. List the type of equipment to be used to construct the project: This project entails the
use of conventional heavy equipment
12. Describe the land use in the vicinity of this project: Commercial and residential.
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.
Nationwide permits 13, 14 and 26 were re-authorized for this site in March 2001. Action ID
Numbers for these permits are 199920369 (NWP 13 -- 0.098 acres/602 linear feet); 199920370
(NWP 14 -- 0.304 acre total width 112')• and 199920371 (NWP 26 -- 0.643 acre, 445 linear
feet). Nationwide permit 12 was issued for this site to permit temporary impacts associated with
installation of sewer lines (#199602047 - 0.58 acre). Nationwide permit 39 was also issued for
this site and authorized 0.329 acre of wetland impacts (Action ID # 200120770). DWQ Project
Numbers associated with this site include 970694 and 991281. The total previous permanent
impacts on this site are 1.374 acres Previous impacts have been mitigated for as required.
V. Future Project Plans
Are any additional permit requests anticipated for this project in the future? If so, describe the
anticipated work, and provide justification for the exclusion of this work from the current
application: None known at this time
Page 5 of 12
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. The applicant must also
provide justification for these impacts in Section VII below. All proposed impacts, permanent
and temporary, must be listed herein, and must be clearly identifiable on an accompanying site
plan. All wetlands and waters, and all streams (intermittent and perennial) must 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 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. Wetland Impacts
Wetland Impact
Site Number
indicate on ma
Type of Impact* Area of
Impact
acres Located within
100-year Floodplain**
(es/no Distance to
Nearest Stream
linear feet
Type of Wetland***
NA

* List each impact separately and identify temporary impacts. 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.
** 100-Year floodplains are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps
(FIRM), or FEMA-approved local floodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or
online at http://www.fema.gov.
*** List a wetland type that best describes wetland to be impacted (e.g., freshwater/saltwater marsh, forested wetland, beaver pond,
Carolina Bay, bog, etc.)
List the total acreage (estimated) of existing wetlands on the property: >50 acres
Total area of wetland impact proposed: NA
2. Stream Impacts, including all intermittent and perennial streams
Stream Impact Length of Average Width Perennial or
Site Number Type of Impact* Impact Stream Name** of Stream Intermittent?
indicate on ma (linear feet Before Impact leasespecify)
1 Fill 130' UT of Richland Creek 2' intermittent
2 Fill & 350' UT of Richland Creek 3' intermittent
Excavation

Page 6 of 12

* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: cuivens and associated np•rap,
dams (separately list impacts due to both structure and flooding relocation (include linear feet before and after, and net loss/gain),
stabilization activities (cement wall, rip-rap, crib wall, 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.
** Stream names can be found on USGS topographic maps. If a stream has no name, list as UT (unnamed tributary) to the nearest
downstream named stream into which it flows. USGS maps are available through the USGS at 1-800-358-9616, or online at
www.usgs.Rov. Several intemet sites also allow direct download and printing of USGS maps (e.g., www.topozone.cony
www.mapquest.com etc.).
Cumulative impacts (linear distance in feet) to all streams on site: 480 linear feet
3. Open Water Impacts, including Lakes, Ponds, Estuaries, Sounds, Atlantic Ocean and any
other Water of the U.S.
Open Water Impact
Site Number
indicate on ma
Type of Impact* Area of
Impact
acres Name of Waterbody
(if applicable) Type of Waterbody
(lake, pond, estuary, sound,
bay, ocean, etc.
NA

* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: till, excavation, dredging,
flooding, drainage, bulkheads, etc.
4. 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.): Dam/embankment and concrete riser.
Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond,
local stormwater requirement, etc.): stormwater requirement
Size of watershed draining to pond: 17.94 acres Expected pond surface area:+/- 0.6 acre
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
Page 7 of 12
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 applicant requested a detailed delineation of wetlands prior to site plan development in
order to avoid jurisdictional wetlands and waters to the maximum extent practicable. However,
in order to satisfy conditions of the previous permits issued for this site the applicant is required
to construct a stormwater detention pond to improve water quality. The construction of the
stormwater pond will require impacts to two unimportant/insignificant channels Following
construction the applicant will reestablish and preserve the 50-foot Neuse River buffers
landward from the pond's normal pool elevation.
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 March 9, 2000, 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 NCWRP 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/sti-ingide.html.
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.
Page 8 of 12
2. Mitigation may also be made by payment into the North Carolina Wetlands Restoration
Program (NCWRP) with the NCWRP's written agreement. Check the box indicating that
you would like to pay into the NCWRP. Please note that payment into the NCWRP must be
reviewed and approved before it can be used to satisfy mitigation requirements. Applicants
will be notified early in the review process by the 401/Wetlands Unit if payment into the
NCWRP is available as an option. For additional information regarding the application
process for the NCWRP, check the NCWRP website at http://h2o.enr.state.nc.us/wW/index.htm If
use of the NCWRP is proposed, please check the appropriate box on page three and provide
the following information:
Amount of stream mitigation requested (linear feet): NA
Amount of buffer mitigation requested (square feet): NA
Amount of Riparian wetland mitigation requested (acres): NA
Amount of Non-riparian wetland mitigation requested (acres): NA
Amount of Coastal wetland mitigation requested (acres): NA
IX. Environmental Documentation (DWQ Only)
Does the project involve an expenditure of public funds or the use of public (federal/state/local)
land?
Yes ? No
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 ?
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 (DWQ Only)
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.
Page 9 of 12
Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233
(Neuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 2B .0250 (Randleman Rules and
Water Supply Buffer Requirements), or other (please identify )?
Yes ? No ® If you answered "yes", provide the following information:
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.
Zone* Impact
(square feet Multiplier Required
Mitigation
1 NA 3 NA
2 1.5 NA
Total NA
* Zone 1 extends out 30 feet perpendicular from near bank of channel; Zone 2 extends an
additional 20 feet from the edge of Zone 1.
If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation
of Property, Conservation Easement, Riparian Buffer Restoration / Enhancement, Preservation or
Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as
identified within 15A NCAC 2B .0242 or .0260.
XI. Stormwater (DWQ Only)
Describe impervious acreage (both 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.
Stormwater detention is reauired on the Wakefield Commercial Tract as per the conditions stated
in previous permits issued for the site. The purpose of the proposed pond is to detain stormwater
entering an unnamed tributary to Richland Creek. As depicted on the attached USGS
topographic map the pond will detain stormwater east of a ridge located on the northeastern
portion of the property. Stormwater detention ponds west of this ridge and elsewhere on-site
were authorized under the previous permits for this site.
XII. Sewage Disposal (DWQ Only)
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.
Municipal sewer.
Page 10 of 12
XIII. Violations (DWQ Only)
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. 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).
*?Ya4t, cl, SjLk/u
Applican g nt's S' nature Date
(Agent's signa re is valid only if an authorization letter from the applicant is provided.)
US Army Corps Of Engineers Field Offices and County Coverage
Asheville Regulatory Field Office Alexander Cherokee Iredell Mitchell
US Army Corps of Engineers Avery Clay Jackson Polk
151 Patton Avenue Buncombe Cleveland Lincoln Rowan
Room 208 Burke Gaston Macon Rutherford
Asheville, NC 28801-5006 Cabarrus Graham Madison Stanley
Telephone: [phone] Caldwell Haywood McDowell Swain
Fax: [phone] Catawba Henderson Mecklenburg Transylvania
Raleigh Regulatory Field Office Alamance Durham Johnston Rockingham
US Army Corps Of Engineers Alleghany Edgecombe Lee Stokes
6508 Falls of the Neuse Road Ashe Franklin Nash Surry
Suite 120 Caswell Forsyth Northampton Vance
Raleigh, NC 27615 Chatham Granville Orange Wake
Telephone: [phone] Davidson Guilford Person Warren
Fax: [phone] Davie Halifax Randolph Wilkes
Washington Regulatory Field Office Beaufort Currituck Jones Pitt
US Army Corps Of Engineers Bertie Dare Lenoir Tyrrell
Union
Watauga
Yancey
Wilson
Yadkin
Page 11 of 12
Post Office Box 1000 Camden Gates Martin Washington
Washington, NC 27889-1000 Carteret* Green Pamlico Wayne
Telephone: [phone] Chowan Hertford Pasquotank
Fax: [phone] Craven Hyde Perquimans *Croatan National Forest Only
Wilmington Regulatory Field Office Anson Duplin Onslow
US Army Corps Of Engineers Bladen Harnett Pender
Post Office Box 1890 Brunswick Hoke Richmond
Wilmington, NC 28402-1890 Carteret Montgomery Robeson
Telephone: [phone] Columbus Moore Sampson
Fax: [phone] Cumberland New Hanover Scotland
US Fish and Wildlife Service / National Marine Fisheries Service
US Fish and Wildlife Service US Fish and Wildlife Service National Marine Fisheries Service
Raleigh Field Office Asheville Field Office Habitat Conservation Division
Post Office Box 33726 160 Zillicoa Street Pivers Island
Raleigh, NC 27636-3726 Asheville, NC 28801 Beaufort, NC 28516
Telephone: [phone] Telephone: [phone] Telephone: [phone]
North Carolina State Agencies
Division of Water Quality
401 Wetlands Unit
1650 Mail Service Center
Raleigh, NC 27699-1650
Telephone: [phone]
Fax: [phone]
Division of Water Quality
Wetlands Restoration Program
1619 Mail Service Center
Raleigh, NC 27699-1619
Telephone: [phone]
Fax: [phone]
State Historic Preservation Office
Department Of Cultural Resources
4617 Mail Service Center
Raleigh, NC 27699-4617
Telephone: [phone]
Fax: [phone]
CAMA and NC Coastal Counties
Division of Coastal Management Beaufort Chowan Hertford Pasquotank
1638 Mail Service Center Bertie Craven Hyde Pender
Raleigh, NC 27699-1638 Brunswick Currituck New Hanover Perquimans
Telephone: [phone] Camden Dare Onslow Tyrrell
Fax: [phone] Carteret Gates Pamlico Washington
NCWRC and NC Trout Counties
Western Piedmont Region Coordinator Alleghany Caldwell Watauga
3855 Idlewild Road Ashe Mitchell Wilkes
Kernersville, NC 27284-9180 Avery Stokes
Telephone: [phone] Burke Surry
Mountain Region Coordinator Buncombe Henderson Polk
20830 Great Smoky Mtn. Expressway Cherokee Jackson Rutherford
Waynesville, NC 28786 Clay Macon Swain
Telephone: [phone] Graham Madison Transylvania
Fax: [phone] Haywood McDowell Yancey
Page 12 of 12
Impact 1
130 LF
Non-buffered
Insignificant/Unimportant Channel
?/ \ y \ RETEIVrION POND / ? ,/ I
•
- Impact 2 _? -
350 LF _ -5s
\ qF Buffered - - Js---`
Insignificant/Unimportant Channel
-M-1-

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II

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Scale: 1" = 120'

A W
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A AW MAKEFIELD DEVELOPMENT
RALEIGH. NORTH CAROLINA -
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Soil a Enviro nm R Fax (gig) 646-946'
244 west Millbrook Road ¦ Raleigh, Nol Carolina 27604 M
AGENT A'UTHpIUz kTION FORM
Lan o er
AU Bl o Be 1~illed B
'-ll 'af-la ?-%?Ilf
R?jGC {?
N LF--% t
Name: ? ?? ^
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Address;
Phone: r? !? ?' f C C 0- le
project Name / De5cri0ln:
Date:
The t7epartI of the AfmY
eery, Wilm>ng nDistrict
U.S. A=Y Corps of Er?gin
p.o. Box
Wilmington, NC 2MO2 1
Attn:...--
Field office*.
Re: Wetlands Related Consulting and Permitting

To whom it may Concern= hereby de & Environmental Consultants, Inc. to
s to and authorize Soil mowner,` a hc ?
ati.ons, to ? up°? reqnest
-?`'--
act I, the in my current behalf as r4pg? m p this day, fforward. permit of PF aril. The - `n'- day of
y agent in the roc rt of a lycations, eta. from
supplemental iaormation in super pP
' ondence concerning the agent for this prbje?
This notification supersedes any previous corresp
uxtrtesy reasons, is vali d only for
S?FC staff. You should call S&F-C
NO?Ch: 1'hia authorization, for Liability and prcfeseiorial co
government officials to enter t eo vPxisoiht eng rty the when site. aessio al cu
to rtge i site meeting prime t
t
Property oy' let's agnature
print property owner's Name
cc: Mr. Kevin Martin t3, Inc.
cc: Mr. john Domey Soil & Environmental Cor?sultan
Water QualitY planr?g
NCDEH & NR - DWQ. a?cnt,frm
4401 Reedy Creek Road
Raleigh, NC 27607 mitigation 6l [.•n? tronl1jent:ll A
ping :end Physical ;?nalys?s a Wetlands Mapping and - - - - - -- -
P<i o n
Soil,'iit? i.? .1U:?uc?n ? • 1 QP
Zoo
DOSSV 131HId3 U STL6 69L 6T6 1V3 ZS:ZT I'M 66/6T/TT
•

WATER QUALITY POND CALCULATIONS
WAKEFIELD CORPORATE CENTER
Wakefield Commercial Development
Raleigh, N.C.
February , 2001
Owner
Wakefield Corporate Center, LLC
4109 Wake Forest Rd., Suite 304
Raleigh, N.C. 27609'
John A.K. Tucker, P.E.
Consulting Engineer

Post Office Box 297
Fuquay-Varina, North Carolina 27526
Voice [phone]
Fax [phone]
John A.K Tucker, P.E.
Cdnsulting Engineer
P'.0. Box 297
Fuquay-Varina, North Carolina 27526
Project Wakefield Corporate Center
Sheet of
Date
Scale NA
Wakefield Corportate Center
Design Calculations for Water Quality Pond
Pond is required to capture the first inch of rainfall from imperious areas
and discharge it over a period of 24 to 120 hours.
Check pond routing against the 2 yr. 10 yr and 100 yr 24 hour storms.
Design Data
Drainage Area 17.94 AC
Estimated C Factor 0.70
Hydraulic Length 1305 FT
Hydraulic Height 68 FT
Weighted SCS Curve Factor 89
Calculated Peak Flows
2 yr - 24 hr 6B.82 CFS
10 yr - 24 hr 87.15 CFS
100 yr - 24 hr 108.88 CFS
Results
Storage required for first inch 65,096 CF (calculated for entire site)
Storage provided for first inch 74,084 CF
Elevations
Invert-in Barrel
Top of Riser
Emergency Spillway
Top o f Dam
279.00
285.00
287.00
289.00
Detention Times
2 yr - 24 hr 94.65 HRS
10 yr - 24 hr 95.53 HRS
100 yr - 24 hr 56.10 HRS
John A.K Tucker, P.E.
Cdnsuiting Engineer
P.O. Box 297
Fuquay-Varina, North Carolina 27526
NA
Project Wakefield Corporate Center
Sheet of
Date
Scale
Emergency Spillway Design
Proposed Lining
Rip Rap (d50 = .9")
Channel Width 15 FT
Channel Slope 0.14 FT/FT
Mannings "N" Number 0.033
TRAPEZOIDAL CHANNEL ANALYSIS
NORMAL DEPTH COMPUTATION
PROGRAM INPUT DATA
DESCRIPTION VALUE
Flow Rate (cfs)............................................. 38.0
Channel Bottom Slope (ft/ft).. .... .. .................. 0.14
Manning's Roughness Coefficient (n-value)................... 0.033
Channel Left Side Slope (horizontal/vertical) ............... 3.0
Channel Right Side Slope (horizontal/vertical) .............. 3.0
Channel Bottom Width (ft) ................................... 15.0
COMPUTATION RESULTS
DESCRIPTION
Normal Depth (ft)
Flow Velocity (fps)
Froude Number
Velocity Head (ft)
Energy Head (ft)
Cross-Sectional Area of Flow (sq ft)
Top Width of Flow (ft)
VALUE
0.32
7.51
2.421
0. B8
1.19
5.06
16.9
HYOROCALC Hydraulics for Windows, Version 1.2 Copyright (c) 1996
Dodson 6 Associates, Inc., 5629 FM 1960 West, Suite 314, Houston, TX 77069
Phone: [phone], Fax: [phone], Email: [e-mail]
All Rights Reserved.
Check Shear Stress
T yds where y = unit wt of water (62.4 f/cf)
d = flow depth - ft
s = slope - ft/ft
T=62.4x .32x 0.14
T = 2.80
Maximum allowed stress for 9" rip rap - 3.00 > 2.80 - OK
HRM-SWM.WB2 JAKT Nov 1999
Perfoms analysis of wet detention ponds in accordance with DWQ BMP's
INPUT DATA: Input data is highlighted. All other values calculated.
LOCATION: Wakefield Development
RAINFALL: Wake County, NC
2 yr 100 yr Source
Duration: (in) (in)
5 min 0.47 0.82 NOAA Hydro 35
15 min 1.01 1.81 NOAA Hydro 35
60 min 1.70 3.50 NOAA Hydro 35
24 hr 3.50 8.00 USWB TP 40
WATERSHED: 17.94 Area, acres
1305 Hydraulic Length, feet
68 Hydraulic Height, feet
0.7 Weighted Rational C
89 Weighted SCS Curve Number
6.1 Computed Time of Concentration (Tc), min., by Kirpich Eqn.
DESIGN STORM: 2 -year Return Frequency
24 -Hour Storm Duration
3.50 Depth, inches, select from DDFIDF page based on Duration and Return Freq.
5.48 Intensity, inches/hour, select from DDFIDF page based on Tc and Return Freq.
HYDROGRAPH: 68.82 Computed Peak Flow by Rational, cfs
1.24 S=1000/CN-10
2.36 Depth of Runoff, inches
153,503.90 Volume of Runoff, cf
26.73 Time to Peak, min.
STAGE-STORAGE: 8208 Ks, constant
1.62 b, exponent
279 Reference Elevation, feet
STAGE-DISCHARGE: 6 Riser Diameter, feet
285 Riser Crest Elev., feet
3.33 Riser Weir Coeff.
0.65 Riser Orifice Coeff.
2.00 Barrel Diameter, feet
279 Barrel Invert Elev., feet
0.65 Barrel Orifice Coeff.
0.25 Dewatering Orfice Dia, feet
283 Dewatering Orfice Elev, feet
0,6 Dewatering Orfice Coeff
ROUTING: 3 Desired Computational Interval, minutes
283 Starting Water Surface Elev.
RESULTS: 285.63 Peak Water Surface Elev., feet
0.63 Depth over Riser Crest, feet
0.00 Depth over E. Spillway, feet
0.00 Depth over Top of Dam, feet
287 E. Spillway Crest Elev., feet
40 E. Spillway Crest Width, feet
3.33 E. Spillway Weir Coeff.
289 Top of Dam Elev., feet
100 Top of Dam Crest Width, feet
3.33 Top of Dam Weir Coeff.
32.1 Total Peak Discharge, cfs
31.71 Primary Peak Discharge, cfs
0.39 Small Orfice Peak Discharge, cfs
0.0 E. Spill. Peak Discharge, cfs
0.0 Top of Dam Peak Discharge, cfs
ARE TRANSFERRED FROM "MAIM" SHEET. DO NOT RE-ENTER VALUES HERE. OK
68.8 Computed Peak Flow by Rational, cfs
1.24 S=1000/CN-10
2.36 Depth of Runoff, inches
153504 Volume of Runoff, cf
26.7 Time to Peak, min.
3 Desired Computational Interval, minutes
283 Starting Water Surface Elev.
8208 Ks, constant
1.62 b, exponent
279 Reference Elevation, feet
6 Riser Diameter, feet
285 Riser Crest Elev., feet
3.33 Riser Weir Coeff.
0.65 Riser Orifice Coeff.
287 E. Spillway Crest Elev., feet
15 E. Spillway Crest Width, feet
3.33 E. Spillway Weir Coeff.
2.00 Barrel Diameter, feet
279 Barrel Invert Elev., feet
0.65 Barrel Orifice Coeff.
0.25 Dewatering Orfce Dia, feet
283.00 Dewatering Office Elev, feet
0.60 Dewatering Office Coeff
all
289 Top of Dam Elev., feet
100 Top of Dam Crest Width, feet
3.33 Top of Dam Weir Coeff.
Time, min Inflow,cfs Storage, cf Stage, ft. Elev., ft.
0 0.0 77549 4.00 283.00
3 2.1 77534 4.00 283.00
6 8.2 77915 4.01 283.01
9 17.5 79376 4.06 283.06
12 28.9 82512 4.16 283.16
15 41.0 87693 4.32 283.32
18 52.2 95041 4.54 283.54
21 61.3 104410 4.81 283.81
24 67.1 115404 5.11 284.11
27 68.8 127428 5.44 284.44
30 66.3 139759 5.75 284.75
33 59.9 151636 6.05 285.05
36 51.9 162223 6.31 285.31
39 44.8 169556 6.48 285.48
42 38.7 173762 6.58 285.58
45 33.5 175650 6.63 285.63
48 28.9 176011 6.63 285.63
51 25.0 175441 6.62 285.62
54 21.6 174342 6.60 285.60
57 18.7 172971 6.56 285.56
60 16.1 171487 6.53 285.53
63 13.9 169982 6.49 285.49
66 12.1 168512 6.46 285.46
69 10.4 167108 6.43 285.43
72 9.0 165785 6.39 285.39
75 7.8 164548 6.36 285.36
78 6.7 163399 6.34 285.34
81 5.8 162336 6.31 285.31
84 5.0 161355 6.29 285.29.
87 4.3 160450 6.27 285.27
90 3.8 159618 6.25 285.25
93 3.2 158851 6.23 285.23
96 2.8 158146 6.21 285.21
99 2.4 157497 6.19 285.19
102 2.1 156900 6.18 285.18
105 1.8 156351 6.17 285.17
108 1.6 155844 6.15 285.15
111 1.4 155378 6.14 285.14
114 1.2 154947 6.13 285.13
117 1.0 154550 6.12 285.12
120 0.9 154183 6.11 285.11
123 0.8 153844 6.11 285.11
126 0.7 153530 6.10 285.10
129 0.6 153239 6.09 285.09
132 0.5 152970 6.08 285.08
135 0.4 152720 6.08 285.08
138 0.4 152488 6.07 285.07
141 0.3 152272 6.07 285.07
144 0.3 152071 6.06 285.06
147 0.2 151883 6.06 285.06
150 0.2 151709 6.05 285.05
153 0.2 151545 6.05 285.05
156 0.2 151392 6.05 285.05
159 0.1 151249 6.04 285.04
162 0.1 151114 6.04 285.04
165 0.1 150988 6.04 285.04
168 0.1 150868 6.03 285.03
171 0.1 150756 6.03 285.03
174 0.1 150650 6.03 285.03
177 0.1 150550 6.02 285.02

Riser maser
Orifice DaHVI Orfce,
Orifice
Primary Orfce,
E. Spill,
Top of
Total
Weir, cfs ,
cfs ,
cfs cfs Dis., cfs cfs cfs Dam, cfs Dis., cfs
0.0 0.0 36.6 0.084 0.000 0.084 0.0 0.0 0.084
0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
0.0 0.0 36.7 0.087 0.000 0.087 0.0 0.0 0.087
0.0 0.0 36.9 0.101 0.000 0.101 0.0 0.0 0.101
0.0 0.0 37.2 0.125 0.000 0.125 0.0 0.0 0.125
0.0 0.0 37.8 0.157 0.000 0.157 0.0 0.0 0.157
0.0 0.0 38.6 0.192 0.000 0.192 0.0 0.0 0.192
0.0 0.0 39.5 0.228 0.000 0.228 0.0 0.0 0.228
0.0 0.0 40.5 0.263 0.000 0.263 0.0 0.0 0.263
0.0 0.0 41.6 0.295 0.000 0.295 0.0 0.0 0.295
0.0 0.0 42.6 0.324 0.000 0.324 0.0 0.0 0.324
0.7 33.3 43.5 0.349 0.724 0.349 0.0 0.0 1.072
10.8 81.9 44.3 0.369 10.753 0.369 0.0 0.0 11.122
21.1 102.5 44.8 0.382 21.069 0.382 0.0 0.0 21.450
27.9 112.5 45.1 0.389 27.854 0.389 0.0 0.0 28.243
31.1 116.7 45.3 0.392 31.077 0.392 0.0 0.0 31.469
31.7 117.5 45.3 0.393 31.705 0.393 0.0 0.0 32.098
30.7 116.2 45.2 0.392 30.715 0.392 0.0 0.0 31.107
28.8 113.8 45.2 0.390 28.834 0.390 0.0 0.0 29.223
26.5 110.7 45.1 0.388 26.536 0.388 0.0 0.0 26.924
24.1 107.2 45.0 0.385 24.113 0.385 0.0 0.0 24.498
21.7 103.6 44.9 0.382 21.730 0.382 0.0 0.0 22.113
19.5 99.8 44.8 0.380 19.477 0.380 0.0 0.0 19.856
17.4 96.2 44.7 0.377 17.395 0.377 0.0 0.0 17.772
15.5 92.5 44.6 0.375 15.499 0.375 0.0 0.0 15.874
13.8 89.0 44.5 0.373 13.791 0.373 0.0 0.0 14.164
12.3 85.6 44.4 0.371 12.260 0.371 0.0 0.0 12.631
10.9 82.3 44.3 0.369 10.895 0.369 0.0 0.0 11.264
9.7 79.1 44.2 0.367 9.681 0.367 0.0 0.0 10.048
8.6 76.0 44.2 0.365 8.602 0.365 0.0 0.0 8.968
7.6 73.1 44.1 0.364 7.645 0.364 0.0 0.0 8.009
6.8 70.3 44.1 0.362 6.797 0.362 0.0 0.0 7.160
6.0 67.6 44.0 0.361 6.045 0.361 0.0 0.0 6.407
5.4 65.0 44.0 0.360 5.379 0.360 0.0 0.0 5.739
4.8 62.5 43.9 0.359 4.788 0.359 0.0 0.0 5.147
4.3 60.2 43.9 0.358 4.264 0.358 0.0 0.0 4.622
3.8 57.9 43.8 0.357 3.799 0.357 0.0 0.0 4.156
3.4 55.7 43.8 0.356 3.386 0.356 0.0 0.0 3.742
3.0 53.6 43.8 0.355 3.019 0.355 0.0 0.0 3.375
2.7 51.6 43.7 0.354 2.693 0.354 0.0 0.0 3.047
2.4 49.7 43.7 0.354 2.403 0.354 0.0 0.0 2.756
2.1 47.9 43.7 0.353 2.144 0.353 0.0 0.0 2.497
1.9 46.1 43.7 0.352 1.914 0.352 0.0 0.0 2.266
1.7 44.4 43.6 0.352 1.708 0.352 0.0 0.0 2.060
1.5 42.7 43.6 0.351 1.524 0.351 0.0 0.0 1.875
1.4 41.1 43.6 0.351 1.360 0.351 0.0 0.0 1.711
1.2 39.6 43.6 0.350 1.213 0.350 0.0 0.0 1.563
1.1 38.1 43.6 0.350 1.081 0.350 0.0 0.0 1.431
1.0 36.6 43.5 0.350 0.963 0.350 0.0 0.0 1.313
0.9 35.3 43.5 0.349 0.857 0.349 0.0 0.0 1.206
0.8 33.9 43.5 0.349 0.762 0.349 0.0 0.0 1.111
03 32.6 43.5 0.348 0.677 0.348 0.0 0.0 1.025
0.6 31.3 43.5 0.348 0.600 0.348 0.0 0.0 0.948
0.5 30.0 43.5 0.348 0.531 0.348 0.0 0.0 0.878
0.5 28.8 43.5 0.348 0.468 0.348 0.0 0.0 0.816
0.4 27.6 415 0.347 0.412 0.347 0.0 0.0 0.759
0.4 26.4 43.5 0.347 0.361 0.347 0.0 0.0 0.708
0.3 25.3 43.4 0.347 0.316 0.347 0.0 0.0 0.662
0.3 24.1 43.4 0.347 0.274 0.347 0.0 0.0 0.621
0.2 23.0 43.4 0.347 0.237 0.347 0.0 0.0 0.583
180 '0.0 150454 6.02 285.02 0.2 21.8 43.4 0.346 0.203 0.346 0.0 0.0 0.550
183 0.0 150364 6.02 285.02 0.2 20.7 43.4 0.346 0.173 0.346 0.0 0.0 0.519
186 0.0 150278 6.02 285.02 0.1 19.5 43.4 0.346 0.146 0.346 0.0 0.0 0.492
189 0.0 150196 6.02 285.02 0.1 18.4 43.4 0.346 0.121 0.346 0.0 0.0 0.467
192 0.0 150117 6.01 285.01 0.1 17.2 43.4 0.346 0.099 0.346 0.0 0.0 0.445
195 0.0 150042 6.01 285.01 0.1 15.9 43.4 0.345 0.079 0.345 0.0 0.0 0.425
198 0.0 149969 6.01 285.01 0.1 14.7 43.4 0.345 0,062 0.345 0.0 0.0 0.407
201 0.0 149900 6.01 285.01 0.0 13.3 43.4 0.345 0.046 0.345 0.0 0.0 0.392
204 0.0 149832 6.01 285.01 0.0 11.9 43.4 0.345 0.033 0.345 0.0 0.0 0.378
5475 0.0 78641 4.03 283.03 0.0 0.0 36.8 0.094 0.000 0.094 0.0 0.0 0.094
5478 0.0 78624 4.03 283.03 0.0 0.0 36.8 0.094 0.000 0.094 0.0 0.0 0.094
5481 0.0 78607 4.03 283.03 0.0 0.0 36.8 0.094 0.000 0.094 0.0 0.0 0.094
5484 0.0 78590 4.03 283.03 0.0 0.0 36.8 0.094 0.000 0.094 0.0 0.0 0.094
5487 0.0 78574 4.03 283.03 0.0 0.0 36.8 0.094 0.000 0.094 0.0 0.0 0.094
5490 0.0 78557 4.03 283.03 0.0 0.0 36.8 0.094 0.000 0.094 0.0 0.0 0.094
5493 0.0 78540 4.03 283.03 0.0 0.0 36.8 0.093 0.000 0.093 0.0 0.0 0.093
5496 0.0 78523 4.03 283.03 0.0 0.0 36.8 0.093 0.000 0.093 0.0 0.0 0.093
5499 0.0 78506 4.03 283.03 0.0 0.0 36.8 0.093 0.000 0.093 0.0 0.0 0.093
5502 0.0 78489 4.03 283.03 0.0 0.0 36.8 0.093 0.000 0.093 0.0 0.0 0.093
5505 0.0 78473 4.03 283.03 0.0 0.0 36.8 0.093 0.000 0.093 0.0 0.0 0.093
5508 0.0 78456 4.03 283.03 0.0 0.0 36.7 0.093 0.000 0.093 0.0 0.0 0.093
5511 0.0 78439 4.03 283.03 0.0 0.0 36.7 0.093 0.000 0.093 0.0 0.0 0.093
5514 0.0 78423 4.03 283.03 0.0 0.0 36.7 0.092 0.000 0.092 0.0 0.0 0.092
5517 0.0 78406 4.03 283.03 0.0 0.0 36.7 0.092 0.000 0.092 0.0 0.0 0.092
5520 0.0 78389 4.03 283.03 0.0 0.0 36.7 0.092 0.000 0.092 0.0 0.0 0.092
5523 0.0 78373 4.03 283.03 0.0 0.0 36.7 0.092 0.000 0.092 0.0 0.0 0.092
5526 0.0 78356 4.03 283.03 0.0 0.0 36.7 0.092 0.000 0.092 0.0 0.0 0.092
5529 0.0 78340 4.03 283.03 0.0 0.0 36.7 0.092 0.000 0.092 0.0 0.0 0.092
5532 0.0 78323 4.02 283.02 0.0 0.0 36.7 0.091 0.000 0.091 0.0 0.0 0.091
5535 0.0 78307 4.02 283.02 0.0 0.0 36.7 0.091 0.000 0.091 0.0 0.0 0.091
5538 0.0 78290 4.02 283.02 0.0 0.0 36.7 0.091 0.000 0.091 0.0 0.0 0.091
5541 0.0 78274 4.02 283.02 0.0 0.0 36.7 0.091 0.000 0.091 0.0 0.0 0.091
5544 0.0 78258 4.02 283.02 0.0 0.0 36.7 0.091 0.000 0.091 0.0 0.0 0.091
5547 0.0 78241 4.02 283.02 0.0 0.0 36.7 0.091 0.000 0.091 0.0 0.0 0.091
5550 0.0 78225 4.02 283.02 0.0 0.0 36.7 0.090 0.000 0.090 0.0 0.0 0.090
5553 0.0 78209 4.02 283.02 0.0 0.0 36.7 0.090 0.000 0.090 0.0 0.0 0.090
5556 0.0 78192 4.02 283.02 0.0 0.0 36.7 0.090 0.000 0.090 0.0 0.0 0.090
5559 0.0 78176 4.02 283.02 0.0 0.0 36.7 0.090 0.000 0.090 0.0 0.0 0.090
5562 0.0 78160 4.02 283.02 0.0 0.0 36.7 0.090 0.000 0.090 0.0 0.0 0.090
5565 0.0 78144 4.02 283.02 0.0 0.0 36.7 0.090 0.000 0.090 0.0 0.0 0.090
5568 0.0 78128 4.02 283.02 0.0 0.0 36.7 0.090 0.000 0.090 0.0 0.0 0.090
5571 0.0 78112 4.02 283.02 0.0 0.0 36.7 0.089 0.000 0.089 0.0 0.0 0.089
5574 0.0 78095 4.02 283.02 0.0 0.0 36.7 0.089 0.000 0.089 0.0 0.0 0.089
5577 0.0 78079 4.02 283.02 0.0 0.0 36.7 0.089 0.000 0.089 0.0 0.0 0.089
5580 0.0 78063 4.02 283.02 0.0 0.0 36.7 0.089 0.000 0.089 0.0 0.0 0.089
5583 0.0 78047 4.02 283.02 0.0 0.0 36.7 0.089 0.000 0.089 0.0 0.0 0.089
5586 0.0 78031 4.02 283.02 0.0 0.0 36.7 0.089 0.000 0.089 0.0 0.0 0.089
5589 0.0 78015 4.01 283.01 0.0 0.0 36.7 0.088 0.000 0.088 0.0 0.0 0.088
5592 0.0 78000 4.01 283.01 0.0 0.0 36.7 0.088 0.000 0.088 0.0 0.0 0.088
5595 0.0 77984 4.01 283.01 0.0 0.0 36.7 0.088 0.000 0.088 0.0 0.0 0.088
5598 0.0 77968 4.01 283.01 0.0 0.0 36.7 0.088 0.000 0.088 0.0 0.0 0.088
5601 0.0 77952 4.01 283.01 0.0 0.0 36.7 0.088 0.000 0.088 0.0 0.0 0.088
5604 0.0 77936 4.01 283.01 0.0 0.0 36.7 0.088 0.000 0.088 0.0 0.0 0.088
5607 0.0 77920 4.01 283.01 0.0 0.0 36.7 0.087 0.000 0.087 0.0 0.0 0.087
5610 0.0 77905 4.01 283.01 0.0 0.0 36.7 0.087 0.000 0.087 0.0 0.0 0.087
5613 0.0 77889 4.01 283.01 0.0 0.0 36.7 0.087 0.000 0.087 0.0 0.0 0.087
5616 0.0 77873 4.01 283.01 0.0 0.0 36.7 0.087 0.000 0.087 0.0 0.0 0.087
5619 0.0 77858 4.01 283.01 0.0 0.0 36.7 0.087 0.000 0.087 0.0 0.0 0.087
5622 0.0 77842 4.01 283.01 0.0 0.0 36.7 0.087 0.000 0.087 0.0 0.0 0.087
5625 0.0 77826 4.01 283.01 0.0 0.0 36.7 0.086 0.000 0.086 0.0. 0.0 0.086
5628 0.0 77811 4.01 283.01 0.0 0.0 36.7 0.086 0.000 0.086 0.0 0.0 0.086
5631 0.0 77795 4.01 283.01 0.0 0.0 36.7 0.086 0.000 0.086 0.0 0.0 0.086
5634 0.0 77780 4.01 283.01 0.0 0.0 36.7 0.086 0.000 0.086 0.0 0.0 0.086
5637 0.0 77764 4.01 283.01 0.0 0.0 36.7 0.086 0.000 0.086 0.0 0.0 0.086
5640 0.0 77749 4.01 283.01 0.0 0.0 36.7 0.086 0.000 0.086 0.0 0.0 0.086
5643 0.0 77734 4.01 283.01 0.0 0.0 36.7 0.086 0.000 0.086 0.0 0.0 0.086
5646 0.0 77718 4.01 283.01 0.0 0.0 36.7 0.085 0.000 0.085 0.0 0.0 0.085
5649 0.0 77703 4.00 283.00 0.0 0.0 36.7 0.085 0.000 0.085 0.0 0.0 0.085
5652 0.0 77687 4.00 283.00 0.0 0.0 36.7 0.085 0.000 0.085 0.0 0.0 0.085
5655 0.0 77672 4.00 283.00 0.0 0.0 36.7 0.085 0.000 0.085 0.0 0.0 0.085
5658 0.0 77657 4.00 283.00 0.0 0.0 36.7 0.085 0.000 0.085 0.0 0.0 0.085
5661 0.0 77642 4.00 283.00 0.0 0.0 36.7 0.085 0.000 0.085 0.0 0.0 0.085
5664 0.0 77626 4.00 283.00 0.0 0.0 36.7 0.084 0.000 0.084 0.0 0.0 0.084
5667 0.0 77611 4.00 283.00 0.0 0.0 36.7 0.084 0.000 0.084 0.0 0.0 0.084
5670 0.0 77596 4.00 283.00 0.0 0.0 36.6 0.084 0.000 0.084 0.0 0.0 0.084
5673 0.0 77581 4.00 283.00 0.0 0.0 36.6 0.084 0.000 0.084 0.0 0.0 0.084
5676 0.0 77566 4.00 283.00 0.0 0.0 36.6 0.084 0.000 0.084 0.0 0.0 0.084
5679 0.0 77551 4.00 283.00 0.0 0.0 36.6 0.084 0.000 0.084 0.0 0.0 0.084
5682 0.0 77536 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
5685 0.0 77536 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
5688 0.0 77536 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
5691 0.0 77536 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
5694 0.0 77536 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
5697 0.0 77536 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
Perfoms analysis of wet detention ponds in accordance with DWQ BMP's
INPUT DATA: Input data is highlighted. All other values calculated.
LOCATION: Wakefield Development
RAINFALL: Wake County, NC
2 yr 100 yr Source
Duration: (in) (in)
5 min 0.47 0.82 NOAA Hydro 35
15 min 1.01 1.81 NOAA Hydro 35
60 min 1.70 3.50 NOAA Hydro 35
24 hr 3.50 8.00 USWB TP 40
WATERSHED: 17.94 Area, acres
1305 Hydraulic Length, feet
68 Hydraulic Height, feet
0.7 Weighted Rational C
89 Weighted SCS Curve Number
6.1 Computed Time of Concentration (Tc), min., by Kirpich Eqn.
DESIGN STORM: 10 -year Return Frequency
24 -Hour Storm Duration
5.33 Depth, inches, select from DDFIDF page based on Duration and Return Freq.
6.94 Intensity, inches/hour, select from DDFIDF page based on Tc and Return Freq.
HYDROGRAPH: 87.15 Computed Peak Flow by Rational, cfs
1.24 S=1000/CN-10
4.09 Depth of Runoff, inches
266,259.13 Volume of Runoff, cf
36.61 Time to Peak, min.
STAGE-STORAGE: 8208 Ks, constant
1.62 b, exponent
279 Reference Elevation, feet
STAGE-DISCHARGE: 6 Riser Diameter, feet
285 Riser Crest Elev., feet
3.33 Riser Weir Coeff.
0.65 Riser Orifice Coeff.
2.00 Barrel Diameter, feet
279 Barrel Invert Elev., feet
0.65 Barrel Orifice Coeff.
0.25 Dewatering Orfice Dia, feet
283 Dewatering Orfice Elev, feet
0.6 Dewatering Orfice Coeff
ROUTING: 4 Desired Computational Interval, minutes
283 Starting Water Surface Elev.
RESULTS: 286.33 Peak Water Surface Elev., feet
1.33 Depth over Riser Crest, feet
0.00 Depth over E. Spillway, feet
0.00 Depth over Top of Dam, feet
287 E. Spillway Crest Elev., feet
40 E. Spillway Crest Width, feet
3.33 E. Spillway Weir Coeff.
289 Top of Dam Elev., feet
100 Top of Dam Crest Width, feet
3.33 Top of Dam Weir Coeff.
47.7 Total Peak Discharge, cfs
47.30 Primary Peak Discharge, cfs
0.44 Small Orfice Peak Discharge, cfs
0.0 E. Spill. Peak Discharge, cfs
0.0 Top of Dam Peak Discharge, cfs
VALUES BELOW ARE TRANSFERRED FROM "MAIN" SHEET. DO NOT RE-ENTER VALUES HERE. OK
87.2 Computed Peak Flow by Rational, cfs 8208 Ks, constant
1.24 S=1000/CN-10 1.62 b, exponent
4.09 Depth of Runoff, inches 279 Reference Elevation, feet
266259 Volume of Runoff, cf
36.6 Time to Peak, min. 6 Riser Diameter, feet 287 E. Spillway Crest Elev., feet
285 Riser Crest Elev., feet 15 E. Spillway Crest Width, feet
4 Desired Computational Interval, minutes 3.33 Riser Weir Coeff. 3.33 E. Spillway Weir Coeff.
283 Starting Water Surface Elev. 0.65 Riser Orifice Coeff.
2.00 Barrel Diameter, feet 289 Top of Dam Elev., feet
279 Barrel Invert Elev., feet 100 Top of Dam Crest Width, feet
0.65 Barrel Orifice Coeff. 3.33 Top of Dam Weir Coeff.
0.25 Dewatering Orfice Dia, feet
283.00 Dewatering Orfice Elev, feet
0.60 Dewatering Orfice Coeff
smau
Riser Riser Barrel Orfice, cis Primary Small E. Spill, Top of Total Dis.,
Time, m In flow,cfs Storage, cf Stage, ft. Elev., ft. Weir, cfs Orifice, cfs Orifice, cfs Dis., cfs Orfice, cfs cfs Dam, cfs cfs
0 0.0 77549 4.00 283.00 0.0 0.0 36.6 0.084 0.000 0.084 0.0 0.0 0.084
4 2.5 77529 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
8 9.9 78139 4.02 283.02 0.0 0.0 36.7 0.090 0.000 0.090 0.0 0.0 0.090
12 21.1 80486 4.09 283.09 0.0 0.0 37.0 0.110 0.000 0.110 0.0 0.0 0.110
16 35.0 85532 4.25 283.25 0.0 0.0 37.5 0.145 0.000 0.145 0.0 0.0 0.145
20 49.9 93900 4.50 283.50 0.0 0.0 38.4 0.187 0.000 0.187 0.0 0.0 0.187
24 64.0 105829 4.85 283.85 0.0 0.0 39.6 0.233 0.000 0.233 0.0 0.0 0.233
28 75.8 121141 5.27 284.27 0.0 0.0 41.0 0.279 0.000 0.279 0.0 0.0 0.279
32 83.8 139263 5.74 28434 0.0 0.0 42.5 0.323 0.000 0.323 0.0 0.0 0.323
36 87.1 159294 6.24 285.24 7.3 71.9 44.1 0.363 7.284 0.363 0.0 0.0 7.647
40 85.3 178361 6.69 285.69 35.9 122.4 45.4 0.396 35.882 0.396 0.0 0.0 36.278
44 78.7 190132 6.96 285.96 58.8 144.3 46.2 0.415 46.228 0.415 0.0 0.0 46.643
48 68.8 197821 7.13 286.13 75.4 156.8 46.7 0.426 46.726 0.426 0.0 0.0 47.153
52 59.7 203015 7.25 286.25 87.2 164.6 47.1 0.434 47.055 0.434 0.0 0.0 47.489
56 51.8 205942 7.31 286.31 94.1 168.8 47.2 0.438 47.238 0.438 0.0 0.0 47.677
60 44.9 206927 7.33 286.33 96.4 170.2 47.3 0.439 47.300 0.439 0.0 0.0 47.739
64 39.0 206252 7.32 286.32 94.8 169.2 47.3 0.438 47.258 0.438 0.0 0.0 47.696
68 33.8 204159 7.27 286.27 89.9 166.2 47.1 0.436 47.127 0.436 0.0 0.0 47.563
72 29.3 200860 7.20 286.20 82.3 161.4 46.9 0.431 46.919 0.431 0.0 0.0 47.350
76 25.5 196537 7.10 286.10 72.6 154.8 46.6 0.425 46.644 0.425 0.0 0.0 47.068
80 22.1 191350 6.99 285.99 61.4 146.4 46.3 0.417 46.308 0.417 0.0 0.0 46.725
84 19.2 185436 6.85 285.85 49.3 136.1 45.9 0.408 45.917 0.408 0.0 0.0 46.325
88 16.6 178916 6.70 285.70 36.9 123.5 45.5 0.397 36.889 0.397 0.0 0.0 37.287
92 14.4 173957 6.59 285.59 28.2 112.9 45.1 0.389 28.182 0.389 0.0 0.0 28.571
96 12.5 170561 6.51 285.51 22.6 105.0 44.9 0.383 22.638 0.383 0.0 0.0 23.021
100 10.9 168038 6.45 285.45 18.8 98.6 44.7 0.379 18.766 0.379 0.0 0.0 19.145
104 9.4 166049 6.40 285.40 15.9 93.3 44.6 0.376 15.873 0.376 0.0 0.0 16.248
108 8.2 164410 6.36 285.36 13.6 88.6 44.5 0.373 13.604 0.373 0.0 0.0 13.977
112 7.1 163016 6.33 285.33 11.8 84.4 44.4 0.370 11.763 0.370 0.0 0.0 12.133
116 6.2 161806 6.30 285.30 10.2 80.6 44.3 0.368 10.233 0.368 0.0 0.0 10.601
120 5.3 160738 6.27 285.27 8.9 77.0 44.2 0.366 8.940 0.366 0.0 0.0 9.306
124 4.6 159785 6.25 285.25 7.8 73.7 44.1 0.364 7.834 0.364 0.0 0.0 8.199
128 4.0 158928 6.23 285.23 6.9 70.6 44.1 0.363 6.881 0.363 0.0 0.0 7.243
132 3.5 158154 6.21 285.21 6.1 67.6 44.0 0.361 6.053 0.361 0.0 0.0 6.414
136 3.0 157450 6.19 285.19 5.3 64.8 44.0 0.360 5.332 0.360 0.0 0.0 5.692
140 2.6 156810 6.18 285.18 4.7 62.2 43.9 0.359 4.701 0.359 0.0 0.0 5.060
144 2.3 156225 6.16 285.16 4.1 59.6 43.9 0.358 4.148 0.358 0.0 0.0 4.505
148 2.0 155690 6.15 285.15 3.7 57.2 43.8 0.357 3.661 0.357 0.0 0.0 4.018
152 1.7 155200 6.14 285.14 3.2 54.9 43.8 0.356 3.233 0.356 0.0 0.0 3.589
156 1.5 154750 6.13 285.13 2.9 52.7 43.7 0.355 2.856 0.355 0.0 0.0 3210
160 1.3 154336 6.12 285.12 2.5 50.5 43.7 0.354 2.522 0.354 0.0 0.0 2.876
164 1.1 153955 6.11 285.11 2.2 48.5 43.7 0.353 2.228 0.353 0.0 0.0 2.581
168 1.0 153604 6.10 285.10 2.0 46.5 43.7 0.353 1.967 0.353 0.0 0.0 2-320
172 0.8 153280 6.09 285.09 1.7 44.6 43.6 0.352 1.736 0.352 0.0 0.0 2.088
176 0.7 152981 6.08 285.08 1.5 42.8 43.6 0.351 1.531 0.351 0.0 0.0 1.883
180 0.6 152705 6.08 285.08 1.3 41.0 43.6 0.351 1.350 0.351 0.0 0.0 1,701
184 0.5 152449 6.07 285.07 1.2 39.3 43.6 0.350 1.188 0.350 0.0 0.0 1.539
188 0.5 152211 6.07 285.07 1.0 37.7 43.6 0.350 1.045 0.350 0.0 0.0 1.395
192 0.4 151991 6.06 285.06 0.9 36.1 43.5 0.349 0.917 0.349 0.0 0.0 1.267
196 0.4 151786 6.05 285.05 0.8 34.5 43.5 0.349 0.804 0.349 0.0 0.0 1.153
200 0.3 151596 6.05 285.05 0.7 33.0 43.5 0.349 0.703 0.349 0.0 0.0 1.051
204 0.3 151418 6.05 285.05 0.6 31.5 43.5 0.348 0.613 0.348 0.0 0.0 0,961
208 0.2 151252 6.04 285.04 0.5 30.1 43.5 0.348 0.532 0.348 0.0 0.0 0.880
212 0.2 151097 6.04 285.04 0.5 28.7 43.5 0.348 0.461 0.348 0.0 0.0 0.808
216 0.2 150952 6.03 285.03 0.4 27.3 43.5 0.347 0.397 0.347 0.0 0.0 0.744
220 0.2 150816 6.03 285.03 0.3 25.9 43.5 0.347 0.340 0.347 0.0 0.0 0.687
224 0.1 150688 6.03 285.03 0.3 24.5 43.4 0.347 0.289 0.347 0.0 0.0 0,636
228 0.1 150567 6.02 285.02 0.2 23.2 43.4 0.347 0.243 0.347 0.0 0.0 0.590
232 0.1 150453 6.02 285.02 0.2 21.8 43.4 0.346 0.203 0.346 0.0 0.0 0.549
236 0.1 150346 6.02 285.02 0.2 20.4 43.4 0.346 0.167 0.346 00 0.0 0.513
240 0.1 150243 6.02 285. 02 0.1 19.0 43.4 0.346 0.135 0.346 0.0 0.0 0.481
244 0.1 150146 6.01 285. 01 0.1 17.6 43.4 0.346 0.107 0.346 0.0 0.0 0.453
248 0.1 150053 6.01 285. 01 0.1 16.1 43.4 0.346 0.082 0.346 0.0 0.0 0.428
252 0.0 149964 6.01 285. 01 0.1 14.6 43.4 0.345 0.061 0.345 0.0 0.0 0.406
256 0.0 149878 6.01 285. 01 0.0 12.9 43.4 0.345 0.042 0.345 0.0 0.0 0.387
260 0.0 149796 6.01 285. 01 0.0 11.0 43.4 0.345 0.026 0.345 0.0 0.0 0.371
264 0.0 149715 6.00 285. 00 0.0 8.9 43.4 0.345 0.014 0.345 0.0 0.0 0.358
268 0.0 149637 6.00 285. 00 0.0 6.0 43.4 0.345 0.004 0.345 0.0 0.0 0.349
272 0.0 149560 6.00 285. 00 0.0 0.0 43.4 0.345 0.000 0.345 0.0 0.0 0.345
276 0.0 149483 6.00 285. 00 0.0 0.0 43.3 0.344 0.000 0.344 0.0 0.0 0.344
280 0.0 149405 6.00 285. 00 0.0 0.0 43.3 0.344 0.000 0.344 0.0 0.0 0.344
284 0.0 149327 5.99 284. 99 0.0 0.0 43.3 0.344 0.000 0.344 0.0 0.0 0.344
288 0.0 149248 5.99 284. 99 0.0 0.0 43.3 0.344 0.000 0.344 0.0 0.0 0.344
292 0.0 149169 5.99 284. 99 0.0 0.0 43.3 0.344 0.000 0.344 0.0 0.0 0.344
296 0.0 149089 5.99 284. 99 0.0 0.0 43.3 0.344 0.000 0.344 0.0 0.0 0.344
300 0.0 149009 5.99 284. 99 0.0 0.0 43.3 0.343 0.000 0.343 0.0 0.0 0.343
304 0.0 148929 5.98 284. 98 0.0 0.0 43.3 0.343 0.000 0.343 0.0 0.0 0.343
308 0.0 148849 5.98 284. 98 0.0 0.0 43.3 0.343 0.000 0.343 0.0 0.0 0.343
312 0.0 148768 5.98 284. 98 0.0 0.0 43.3 0.343 0.000 0.343 0.0 0.0 0.343
316 0.0 148687 5.98 284. 98 0.0 0.0 43.3 0.343 0.000 0.343 0.0 0.0 0.343
320 0.0 148606 5.98 284. 98 0.0 0.0 43.3 0.343 0.000 0.343 0.0 0.0 0.343
324 0.0 148525 5.97 284. 97 0.0 0.0 43.3 0.342 0.000 0.342 0.0 0.0 0.342
328 0.0 148444 5.97 284. 97 0.0 0.0 43.3 0.342 0.000 0.342 0.0 0.0 0.342
332 0.0 148362 5.97 284. 97 0.0 0.0 43.3 0.342 0.000 0.342 0.0 0.0 0.342
336 0.0 148281 5.97 284. 97 0.0 0.0 43.3 0.342 0.000 0.342 0.0 0.0 0.342
340 0.0 148199 5.97 284. 97 0.0 0.0 43.3 0.342 0.000 0.342 0.0 0.0 0.342
344 0.0 148118 5.96 284. 96 0.0 0.0 43.2 0.342 0.000 0.342 0.0 0.0 0.342
348 0.0 148036 5.96 284. 96 0.0 0.0 43.2 0.341 0.000 0.341 0.0 0.0 0.341
352 0.0 147955 5.96 284. 96 0.0 0.0 43.2 0.341 0.000 0.341 0.0 0.0 0.341
356 0.0 147873 5.96 284. 96 0.0 0.0 43.2 0.341 0.000 0.341 0.0 0.0 0.341
360 0.0 147792 5.96 264. 96 0.0 0.0 43.2 0.341 0.000 0.341 0.0 0.0 0.341
364 0.0 147710 5.95 284. 95 0.0 0.0 43.2 0.341 0.000 0.341 0.0 0.0 0.341
368 0.0 147628 5.95 284. 95 0.0 0.0 43.2 0.341 0.000 0.341 0.0 0.0 0.341
0.0 79052 4.05 283.05 0.0 0.0 36.8 0.098 0.000 0.098 0.0 0.0 0.098
0.0 79029 4.05 283.05 0.0 0.0 36.8 0.098 0.000 0.098 0.0 0.0 0.098
0.0 79005 4.05 283.05 0.0 0.0 36.8 0.098 0.000 0.098 0.0 0.0 0.098
0.0 78982 4.05 283.05 0.0 0.0 36.8 0.098 0.000 0.098 0.0 0.0 0.098
0.0 78958 4.04 283.04 0.0 0.0 36.8 0.097 0.000 0.097 0.0 0.0 0.097
0.0 78935 4.04 28104 0.0 0.0 36.8 0.097 0,000 0.097 0.0 0.0 0.097
0.0 78911 4.04 283.04 0.0 0.0 36.8 0.097 0.000 0.097 0.0 0.0 0.097
0.0 78888 4.04 283.04 0.0 0.0 36.8 0.097 0.000 0.097 0.0 0.0 0.097
0.0 78865 4.04 283.04 0.0 0.0 36.8 0.097 0.000 0.097 0.0 0.0 0.097
0.0 78842 4.04 283.04 0.0 0.0 36.8 0.096 0.000 0.096 00 0.0 0.096
0.0 78819 4.04 283.04 0.0 0.0 36.8 0.096 0.000 0.096 0.0 0.0 0.096
0.0 78796 4.04 283.04 0.0 0.0 36.8 0.096 0.000 0.096 0.0 0.0 0.096
0.0 78773 4.04 283.04 0.0 0.0 36.8 0.096 0.000 0.096 0.0 0.0 0.096
0.0 78750 4.04 283.04 0.0 0.0 36.8 0.095 0.000 0.095 0.0 0.0 0.095
0.0 78727 4.04 283.04 0.0 0.0 36.8 0.095 0.000 0.095 0.0 0.0 0.095
0.0 78704 4.04 283.04 0.0 0.0 36.8 0.095 0.000 0.095 0.0 0.0 0.095
0.0 78681 4.04 283.04 0.0 0.0 36.8 0.095 0.000 0.095 0.0 0.0 0.095
0.0 78658 4.04 283.04 0.0 0.0 36.8 0.095 0.000 0.095 0.0 0.0 0.095
0.0 78636 4.03 283.03 0.0 0.0 36.8 0.094 0.000 0.094 0.0 0.0 0.094
0.0 78613 4.03 283.03 0.0 0.0 36.8 0.094 0.000 0.094 0.0 0.0 0.094
0.0 78590 4.03 283.03 0.0 0.0 36.8 0.094 0.000 0.094 0.0 0.0 0.094
0.0 78568 4.03 283.03 co . 0.0 36.8 0.094 0.000 0.094 0.0 0.0 0.094
0.0 78545 4.03 283.03 0.0 0.0 36.8 0.094 0.000 0.094 0.0 0.0 0.094
0.0 78523 4.03 283.03 0.0 0.0 36.8 0.093 0.000 0.093 0.0 0.0 0.093
0.0 78500 4.03 283.03 0.0 0.0 36.8 0.093 0.000 0.093 0.0 0.0 0.093
0.0 78478 4.03 283.03 0.0 0.0 36.8 0.093 0.000 0.093 0.0 0.0 0.093
0.0 78456 4.03 283.03 0.0 0.0 36.7 0.093 0.000 0.093 0.0 0.0 0.093
0.0 78434 4.03 283.03 0.0 0.0 36.7 0.092 0.000 0.092 0.0 0.0 0.092
0.0 78411 4.03 283.03 0,0 0.0 36.7 0.092 0.000 0.092 0.0 0.0 0.092
0.0 78389 4.03 283.03 0.0 0.0 36.7 0.092 0.000 0.092 0.0 0.0 0.092
0.0 78367 4.03 283.03 0.0 0.0 36.7 0.092 0.000 0.092 0.0 0.0 0.092
0.0 78345 4.03 283.03 0.0 0.0 36.7 0.092 0.000 0.092 0.0 0.0 0.092
0.0 78323 4.02 283.02 0.0 0.0 36.7 0.091 0.000 0.091 0.0 0.0 0.091
0.0 78301 4.02 283.02 0.0 0.0 36.7 0.091 0.000 0.091 0.0 0.0 0.091
0.0 78279 4.02 283.02 0.0 0.0 36.7 0.091 0.000 0.091 0.0 0.0 0.091
0.0 78257 4.02 283.02 0.0 0.0 36.7 0.091 0.000 0.091 0.0 0.0 0.091
0.0 78236 4.02 283.02 0.0 0.0 36.7 0.091 0.000 0.091 0.0 0.0 0.091
0.0 78214 4.02 283.02 0.0 0.0 36.7 0.090 0.000 0.090 0.0 0.0 0.090
0.0 78192 4.02 283.02 0.0 0.0 36.7 0.090 0.000 0.090 0.0 0.0 0.090
0.0 78171 4.02 283.02 0.0 0.0 36.7 0.090 0.000 0.090 0.0 0.0 0.090
0.0 78149 4.02 283.02 0.0 0.0 36.7 0.090 0.000 0.090 0.0 0.0 0.090
0.0 78127 4.02 283.02 0.0 0.0 36.7 0.090 0.000 0.090 0.0 0.0 0.090
0.0 78106 4.02 283.02 0.0 0.0 36.7 0.089 0.000 0.089 0.0 0.0 0.089
0.0 78085 4.02 283.02 0.0 0.0 36.7 0.089 0.000 0.089 0.0 0.0 0.089
0.0 78063 4.02 283.02 0.0 0.0 36.7 0.089 0.000 0.089 0.0 0.0 0.089
0.0 78042 4.02 283.02 0.0 0.0 36.7 0.089 0.000 0.089 0.0 0.0 0.089
0.0 78021 4.02 283.02 0.0 0.0 36.7 0.088 0.000 0.088 0.0 0.0 0.088
0.0 77999 4.01 283.01 0.0 0.0 36.7 0.088 0.000 0.088 0.0 0.0 0.088
0.0 77978 4.01 283.01 0.0 0.0 36.7 0.088 0.000 0.088 0.0 0.0 0.088
0.0 77957 4.01 283.01 0.0 0.0 36.7 0.088 0.000 0.088 0.0 0.0 0.088
0.0 77936 4.01 283.01 0.0 0.0 36.7 0.088 0.000 0.088 0.0 0.0 0.088
0.0 77915 4.01 283.01 0.0 0.0 36.7 0.087 0.000 0.087 0.0 0.0 0.087
0.0 77894 4.01 283.01 0.0 0.0 36.7 0.087 0.000 0.087 0.0 0.0 0.087
0.0 77873 4.01 283.01 0.0 0.0 36.7 0.087 0.000 0.087 0.0 0.0 0.087
0.0 77852 4.01 283.01 0.0 0.0 36.7 0.087 0.000 0.087 0.0 0.0 0.087
0.0 77831 4.01 283.01 0.0 0.0 36.7 0.087 0.000 0.087 0.0 0.0 0.087
0.0 77811 4.01 283.01 0.0 0.0 36.7 0.086 0.000 0.086 0.0 0.0 0.086
0.0 77790 4.01 283.01 0.0 0.0 36.7 0.086 0.000 0.086 0.0 0.0 0.086
0.0 77769 4.01 283.01 0.0 0.0 36.7 0.086 0.000 0.086 0.0 0.0 0.086
0.0 77749 4.01 283.01 0.0 0.0 36.7 0.086 0.000 0.086 0.0 0.0 0.086
0.0 77728 4.01 283.01 0.0 0.0 36.7 0.085 0.000 0.085 0.0 0.0 0.085
0.0 77708 4.01 283.01 0.0 0.0 36.7 0.085 0.000 0.085 0.0 0.0 0.085
0.0 77687 4.00 283.00 0.0 0.0 36.7 0.085 0.000 0.085 0.0 0.0 0.085
0.0 77667 4.00 283.00 0.0 0.0 36.7 0.085 0.000 0.085 0.0 0.0 0.085
0.0 77646 4.00 283.00 0.0 0.0 36.7 0.085 0.000 0.085 0.0 0.0 0.085
0.0 77626 4.00 283.00 0.0 0.0 36.7 0.084 0.000 0.084 0.0 0.0 0.084
0.0 77606 4.00 283.00 0.0 0.0 36.6 0.084 0.000 0.084 0.0 0.0 0.084
0.0 77586 4.00 283.00 0.0 0.0 36.6 0.084 0.000 0.084 0.0 0.0 0.084
0.0 77565 4.00 283.00 0.0 0.0 36.6 0.084 0.000 0.084 0.0 0.0 0.084
0.0 77545 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
0.0 77545 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
0.0 77545 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
0.0 77545 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
0.0 77545 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
0.0 77545 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
HRM-SWM.WB2 JAKT Nov 1999
Perfoms analysis of wet detention ponds in accordance with DWQ BMP's
MPUT DATA: Input data is highlighted. All other values calculated.
LOCATION: Wakefield Development
RAINFALL: Wake County, NC
2 yr 100 yr Source
Duration: (in) (in)
5 min 0.47 0.82 NOAA Hydro 35
15 min 1.01 1.81 NOAA Hydro 35
60 min 1.70 3.50 NOAA Hydro 35
24 hr 3.50 8.00 USWB TP 40
WATERSHED: 17.94 Area, acres
1305 Hydraulic Length, feet
68 Hydraulic Height, feet
0.7 Weighted Rational C
89 Weighted SCS Curve Number
6.1 Computed Time of Concentration (Tc), min., by Kirpich Eqn.
DESIGN STORM: 100 -year Return Frequency
24 -Hour Storm Duration
9.70 Depth, inches, select from DDFIDF page based on Duration and Return Freq.
8.67 Intensity, inches/hour, select from DDFIDF page based on Tc and Return Freq.
HYDROGRAPH: 108.88 Computed Peak Flow by Rational, cfs
1.24 S=1000/CN-10
8.36 Depth of Runoff, inches
544,406.55 Volume of Runoff, cf
59.92 Time to Peak, min.
STAGE-STORAGE: 8208 Ks, constant
1.62 b, exponent
279 Reference Elevation, feet
STAGE-DISCHARGE: 6 Riser Diameter, feet
285 Riser Crest Elev., feet
3.33 Riser Weir Coeff.
0.65 Riser Orifice Coeff.
2.00 Barrel Diameter, feet
279 Barrel Invert Elev., feet
0.65 Barrel Orifice Coeff.
0.33 Dewatering Orfice Dia, feet
283 Dewatering Orfice Elev, feet
0.6 Dewatering Orfice Coeff
ROUTING: 6 Desired Computational Interval, minutes
283 Starting Water Surface Elev.
RESULTS: 287.50 Peak Water Surface Elev., feet
2.50 Depth over Riser Crest, feet
0.50 Depth over E. Spillway, feet
0.00 Depth over Top of Dam, feet
287 E. Spillway Crest Elev., feet
40 E. Spillway Crest Width, feet
3.33 E. Spillway Weir Coeff.
289 Top of Dam Elev., feet
100 Top of Dam Crest Width, feet
3.33 Top of Dam Weir Coeff.
98.4 Total Peak Discharge, cfs
50.51 Primary Peak Discharge, cfs
0.89 Small Orfice Peak Discharge, cfs
47.0 E. Spill. Peak Discharge, cfs
0.0 Top of Dam Peak Discharge, cfs
VALUES BELOW ARE TRANSFERRED FROM "MAIM" SHEET. DO NOT RE-ENTER VALUES HERE. OK
108.9 Computed Peak Flow by Rational, cfs 8208 Ks, constant
1.24 S=1000/CN-10 1.62 b, exponent
8.36 Depth of Runoff, inches 279 Reference Elevation, feet
• 544407 Volume of Runoff, cf
59.9 Time to Peak, min. 6 Riser Diameter, feet 287 E. Spillway Crest Elev., feet
285 Riser Crest Elev., feet 15 E. Spillway Crest Width, feet
6 Desired Computational Interval, minutes 3.33 Riser Weir Coeff. 3.33 E. Spillway Weir Coeff.
283 Starting Water Surface Elev. 0.65 Riser Orifice Coeff.
2.00 Barrel Diameter, feet 289 Top of Dam Elev., feet
279 Barrel Invert Elev., feet 100 Top of Dam Crest Width, feet
0.65 Barrel Orifice Coeff. 3.33 Top of Dam Weir Coeff.
0.33 Dewatering Orfice Dia, feet
283.00 Dewatering Orfice Elev, feet
0.60 Dewatering Orfice Coeff
Storage, Riser Riser Barrel Primary Dis., E. Spill, Top of Total Dis.,
Time, min. Inflow,cfs cf Stage, ft. Elev., ft. Weir, cfs Orifice, cfs Orifice, cfs Small Orfice cfs Small Orefi cfs Dam, cfs cfs
0 0.0 77549 4.00 283.00 0.0 0.0 36.6 0.167 0.000 0.167 0.0 0.0 0.167
6 2.7 77488 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
12 10.4 78450 4.03 283.03 0.0 0.0 36.7 0.181 0.000 0.181 0.0 0.0 0.181
18 22.5 82138 4.14 283.14 0.0 0.0 37.2 0.229 0.000 0.229 0.0 0.0 0.229
24 37.7 90154 4.39 283.39 0.0 0.0 38.0 0.307 0.000 0.307 0.0 0.0 0.307
30 54.6 103617 4.78 283.78 0.0 0.0 39.4 0.401 0.000 0.401 0.0 0.0 0.401
36 71.4 123112 5.32 284.32 0.0 0.0 41.2 0.502 0.000 0.502 0.0 0.0 0.502
42 86.6 148633 5.98 284.98 0.0 0.0 43.3 0.603 0.000 0.603 0.0 0.0 0.603
48 98.6 179580 6.72 285.72 38.1 124.9 45.5 0.699 38.106 0.699 0.0 0.0 38.806
54 106.3 201102 7.20 2B6.20 82.8 161.8 46.9 0.756 46.935 0.756 0.0 0.0 47.691
60 108.9 222193 7.66 286.66 134.3 190.0 48.2 0.805 48.226 0.805 0.0 0.0 49.031
66 106.1 243738 8.11 287.11 192.5 214.3 49.5 0.852 49.464 0.852 1.8 0.0 52.158
72 98.3 263170 8.50 287.50 248.7 233.4 50.5 0.890 50.520 0.890 17.9 0.0 69.288
78 87.0 273620 8.71 287.71 280.2 242.8 51.1 0.909 51.067 0.909 29.9 0.0 81.923
84 76.4 275446 8.75 287.75 285.8 244.4 51.2 0.913 51.161 0.913 32.2 0.0 84.312
90 67.1 272588 8.69 287.69 277.0 241.9 51.0 0.907 51.013 0.907 28.7 0.0 80.594
96 58.9 267713 8.59 287.59 262.3 237.6 50.8 0.898 50.759 0.898 22.9 0.0 74.550
102 51.7 262067 8.48 287.48 245.5 232.4 50.5 0.888 50.461 0.888 16.7 0.0 68.069
108 45.4 256168 8.36 287.36 228.1 226.8 50.1 0.876 50.145 0.876 11.0 0.0 61.979
114 39.8 250191 8.24 287.24 210.8 220.9 49.8 0.865 49.820 0.865 6.0 0.0 56.658
120 35.0 244135 8.12 287.12 1916 214.7 49.5 0.852 49.486 0.852 2.0 0.0 52.388
126 30.7 237866 7.99 286.99 176.2 208.0 49.1 0.839 49.133 0.839 0.0 0.0 49.973
132 27.0 230929 7.85 286.85 157.3 200.3 48.7 0.825 48.737 0.825 0.0 0.0 49.561
138 23.7 222792 7.67 286.67 135.9 190.8 48.3 0.807 48.261 0.807 0.0 0.0 49.068
144 20.8 213647 7.48 286.48 112.7 179.3 47.7 0.786 47.713 0.786 0.0 0.0 48.499
150 18.2 203668 7.26 286.26 88.7 165.5 47.1 0.762 47.096 0.762 0.0 0.0 47.858
156 16.0 193006 7.02 286.02 64.9 149.1 46.4 0.735 46.416 0.735 0.0 0.0 47.151
162 14.1 181797 6.77 285.77 42.2 129.3 45.7 0.705 42.249 0.705 0.0 0.0 42.955
168 12.3 171395 6.53 285.53 24.0 107.0 45.0 0.676 23.967 0.676 0.0 0.0 24.642
174 10.8 166968 6.42 285.42 17.2 95.8 44.6 0.662 17.191 0.662 0.0 0.0 17.853
180 9.5 164442 6.36 285.36 13.6 88.7 44.5 0.655 13.648 0.655 0.0 0.0 14.303
186 8.4 162719 6.32 285.32 11.4 83.5 44.3 0.649 11.381 0.649 0.0 0.0 12.030
192 7.3 161395 6.29 285.29 9.7 79.2 44.2 0.645 9.730 0.645 0.0 0.0 10.375
198 6.4 160300 6.26 285.26 8.4 75.5 44.2 0.642 8.427 0.642 0.0 0.0 9.069
204 5.7 159354 6.24 285.24 7.3 72.2 44.1 0.639 7.350 0.639 0.0 0.0 7.988
210 5,0 158513 6.22 285.22 6.4 69.0 44.0 0.636 6.433 0.636 0.0 0.0 7.069
216 4.4 157755 6.20 285.20 5.6 66.1 44.0 0.633 5.640 0.633 0.0 0.0 6.274
222 3.8 157065 6.18 285.18 4.9 63.2 43.9 0.631 4.949 0.631 0.0 0.0 5.580
228 3.4 156433 6.17 285.17 4.3 60.5 43.9 0.629 4.342 0.629 0.0 0.0 4.971
234 2.9 155853 6.15 285.15 3.8 57.9 43.8 0.627 3.807 0.627 0.0 0.0 4.434
240 2.6 155318 6.14 285.14 3.3 55.4 43.8 0.625 3.335 0.625 0.0 0.0 3.960
246 2.3 154824 6.13 285.13 2.9 53.0 43.8 0.624 2.917 0.624 0.0 0.0 3.541
252 2.0 154367 6.12 285.12 2.5 50.7 43.7 0.622 2.547 0.622 0.0 0.0 3.170
258 1.8 153945 6.11 285.11 2.2 48.4 43.7 0.621 2.220 0.621 0.0 0.0 2.841
264 1.5 153553 6.10 285.10 1.9 46.2 43.7 0.620 1.930 0.620 0.0 0.0 2.549
270 1.4 153188 6.09 285.09 1.7 44.1 43.6 0.618 1.672 0.618 0.0 0.0 2.291
276 1.2 152850 6.08 285.08 1.4 41.9 43.6 0.617 1.444 0.617 0.0 0.0 2.061
282 1.0 152534 6.07 285.07 1.2 39.9 43.6 0.616 1.242 0.616 0.0 0.0 1.858
288 0.9 152240 6.07 285.07 1.1 37.9 43.6 0.615 1.062 0.615 0.0 0.0 1.677
294 0.8 151965 6.06 285.06 0.9 35.9 43,5 0.614 0.903 0.614 0.0 0.0 1.517
300 0.7 151708 6.05 285.05 0.8 33.9 43.5 0.613 0.762 0.613 0.0 0.0 1.375
306 0.6 151466 6.05 285.05 0.6 31.9 43.5 0.612 0.637 0.612 0.0 0.0 1.249
312 0.5 151239 6.04 285.04 0.5 30.0 43.5 0.612 0.526 0.612 0.0 0.0 1.138
318 0.5 151025 6.04 285.04 0.4 28.0 43.5 0.611 0.428 0.611 0.0 0.0 1.039
324 0.4 150822 6.03 285.03 0.3 26.0 43.5 0.610 0.342 0.610 0.0 0.0 0.953
330 0.4 150630 6.03 285.03 0.3 23.9 43.4 0.610 0.267 0.610 0.0 0.0 0.876
336 0.3 150447 6.02 285.02 0.2 21.7 43.4 0.609 0.201 0.609 0.0 0.0 0.810
342 0.3 150271 6.02 285.02 01 19.4 434 0.608 0144 0.608 0.0 0.0 0.752
348 0.2 150103 6.01 285.01 0.1 16.9 43.4 0.608 0.095 0.608 0.0 0.0 0.703
354 0.2 149939 6.01 285.01 01 14.1 43.4 0.607 0.055 0.607 0.0 0.0 0.662
360 0.2 149779 6.01 285. 01 0.0 10.6 43.4 0.607 0.024 0.607 0.0 0.0 0.630
366 0.2 149621 6.00 285. 00 0.0 5.3 43.4 0.606 0.003 0.606 0.0 0.0 0.609
372 0.1 149463 6.00 285. 00 0.0 0.0 43.3 0.606 0.000 0.606 0.0 0.0 0.606
378 0.1 149298 5.99 284. 99 0.0 0.0 43.3 0.605 0.000 0.605 0.0 0.0 0.605
384 0.1 149127 5.99 284. 99 0.0 0.0 43.3 0.604 0.000 0.604 0.0 0.0 0.604
390 0.1 148950 5.98 284. 98 0.0 0.0 43.3 0.604 0.000 0.604 0.0 0.0 0.604
396 0.1 148769 5.98 284. 98 0.0 0.0 43.3 0.603 0.000 0.603 0.0 0.0 0.603
402 0.1 148583 5.98 284. 98 0.0 0.0 43.3 0.603 0.000 0.603 0.0 0.0 0.603
408 0.1 148394 5.97 284. 97 0.0 0.0 43.3 0.602 0.000 0.602 0.0 0.0 0.602
414 0.1 148202 5.97 284. 97 0.0 0.0 43.3 0.601 0.000 0.601 0.0 0.0 0.601
420 0.1 148006 5.96 284. 96 0.0 0.0 43.2 0.601 0.000 0.601 0.0 0.0 0.601
426 0.0 147809 5.96 284. 96 0.0 0.0 43.2 0.600 0.000 0.600 0.0 0.0 0.600
432 0.0 147610 5.95 284. 95 0.0 0.0 43.2 0.599 0.000 0.599 0.0 0.0 0.599
438 0.0 147408 5.95 284. 95 0.0 0.0 43.2 0.598 0.000 0.598 0.0 0.0 0.598
444 0.0 147206 5.94 284. 94 0.0 0.0 43.2 0.598 0.000 0.598 0.0 0.0 0.598
450 0.0 147002 5.94 284. 94 0.0 0.0 43.2 0.597 0.000 0.597 0.0 0.0 0.597
456 0.0 146797 5.93 284. 93 0.0 0.0 43.1 0.596 0.000 0.596 0.0 0.0 0.596
462 0.0 146590 5.93 284. 93 0.0 0.0 43.1 0.596 0.000 0.596 0.0 0.0 0.596
468 0.0 146384 5.92 284. 92 0.0 0.0 43.1 0.595 0.000 0.595 0.0 0.0 0.595
474 0.0 146176 5.92 284. 92 0.0 0.0 43.1 0.594 0.000 0.594 0.0 0.0 0.594
480 0.0 145968 5.91 284. 91 0.0 0.0 43.1 0.593 0.000 0.593 0.0 0.0 0.593
486 0.0 145760 5.91 284. 91 0.0 0.0 43.1 0.593 0.000 0.593 0.0 0.0 0.593
492 0.0 145551 5.90 284. 90 0.0 0.0 43.0 0.592 0.000 0.592 0.0 0.0 0.592
498 0.0 145342 5.89 284. 89 0.0 0.0 43.0 0.591 0.000 0.591 0.0 0.0 0.591
3204 0.0 79808 4.07 283.07 0.0 0.0 36.9 0.200 0.000 0.200 0.0 0.0 0.200
3210 0.0 79736 4.07 283.07 0.0 0.0 36.9 0.199 0.000 0.199 0.0 0.0 0.199
3216 0.0 79664 4.07 283.07 0.0 0.0 36.9 0.198 0.000 0.198 0.0 0.0 0.198
3222 0.0 79592 4.06 283.06 0.0 0.0 36.9 0.197 0.000 0.197 0.0 0.0 0.197
3228 0.0 79521 4.06 283.06 0.0 0.0 36.9 0.196 0.000 0.196 0.0 0.0 0.196
3234 0.0 79451 4.06 283.06 0.0 0.0 36.9 0.195 0.000 0.195 0.0 0.0 0.195
3240 0.0 79380 4.06 283.06 0.0 0.0 36.9 0.194 0.000 0.194 0.0 0.0 0.194
3246 0.0 79310 4.06 283.06 0.0 0.0 36.8 0.194 0.000 0.194 0.0 0.0 0.194
3252 0.0 79241 4.05 283.05 0.0 0.0 36.8 0.193 0.000 0.193 0.0 0.0 0.193
3258 0.0 79171 4.05 283.05 0.0 0.0 36.8 0.192 0.000 0.192 0.0 0.0 0.192
3264 0.0 79102 4.05 283.05 0.0 0.0 36.8 0.191 0.000 0.191 0.0 0.0 0.191
3270 0.0 79034 4.05 283.05 0.0 0.0 36.8 0.190 0.000 0.190 0.0 0.0 0.190
3276 0.0 78965 4.04 283.04 0.0 0.0 36.8 0.189 0.000 0.189 0.0 0.0 0.189
3282 0.0 78897 4.04 283.04 0.0 0.0 36.8 0.188 0.000 0.188 0.0 0.0 0.188
3288 0.0 78830 4.04 283.04 0.0 0.0 36.8 0.187 0.000 0.187 0.0 0.0 0.187
3294 0.0 78763 4.04 283.04 0.0 0.0 36.8 0.186 0.000 0.186 0.0 0.0 0.186
3300 0.0 78696 4.04 283.04 0.0 0.0 36.8 0.185 0.000 0.185 0.0 0.0 0.185
3306 0.0 78629 4.03 283.03 0.0 0.0 36.8 0.184 0.000 0.184 0.0 0.0 0.184
3312 0.0 78563 4.03 283.03 0.0 0.0 36.8 0.183 0.000 0.183 0.0 0.0 0.183
3318 0.0 78497 4.03 283.03 0.0 0.0 36.8 0.182 0.000 0.182 0.0 0.0 0.182
3324 0.0 78432 4.03 28103 0.0 0.0 36.7 0.181 0.000 0.181 0.0 0.0 0.181
3330 0.0 78367 4.03 283.03 0.0 0.0 36.7 0.180 0.000 0.180 0.0 0.0 0.180
3336 0.0 78302 4.02 283.02 0.0 0.0 36.7 0.179 0.000 0.179 0.0 0.0 0.179
3342 0.0 78237 4.02 283.02 0.0 0.0 36.7 0.178 0.000 0.178 0.0 0.0 0.178
3348 0.0 78173 4.02 283.02 0.0 0.0 36.7 0.177 0.000 0.177 0.0 0.0 0.177
3354 0.0 78109 4.02 283.02 0.0 0.0 36.7 0.176 0.000 0.176 0.0 0.0 0.176
3360 0.0 78046 4.02 283.02 0.0 0.0 36.7 0.175 0.000 0.175 0.0 0.0 0.175
3366 0.0 77983 4.01 283.01 0.0 0.0 36.7 0.174 0.000 0.174 0.0 0.0 0.174
3372 0.0 77920 4.01 283.01 0.0 0.0 36.7 0.173 0.000 0.173 0.0 0.0 0.173
3378 0.0 77858 4.01 283.01 0.0 0.0 36.7 0.172 0.000 0.172 0.0 0.0 0.172
3384 0.0 77796 4.01 283.01 0.0 0.0 36.7 0.171 0.000 0.171 0.0 0.0 0.171
3390 0.0 77734 4.01 283.01 0.0 0.0 36.7 0.170 0.000 0.170 0.0 0.0 0.170
3396 0.0 77673 4.00 283.00 0.0 0.0 36.7 0.169 0.000 0.169 0.0 0.0 0.169
3402 0.0 77612 4.00 283.00 0.0 0.0 36.7 0.168 0.000 0.168 0.0 0.0 0.168
3408 0.0 77552 4.00 283.00 0.0 0.0 36.6 0.167 0.000 0.167 0.0 0.0 0.167
3414 0.0 77491 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
3420 0.0 77491 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
3426 0.0 77491 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
3432 0.0 77491 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
3438 0.0 77491 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
3444 0.0 77491 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
3450 0.0 77491 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
3456 0.0 77491 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
3462 0.0 77491 4.00 283.00 0.0 0.0 36.6 0.000 0.000 0.000 0.0 0.0 0.000
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