SW8070319_Historical File_20080515

Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Coleen H. Sullins Director
Division of Water Quality
May 15, 2008
Robert E. Huckabee, III, Manager
Cape Fear Investment and Development, LLC
1611 Castle Hayne Road, Building B
Wilmington, NC 28401
Subject: Stormwater Permit No. SW8 070319MOD
Ferguson Distributors
High Density Subdivision Project
New Hanover County
Dear Mr. Huckabee:
The Wilmington Regional Office received a complete Stormwater Management Permit Application for
Ferguson Distributors on May 13, 2008. Staff review of the plans and specifications has determined
that the project, as proposed, will comply with the Stormwater Regulations set forth in Title 15A NCAC
2H.1000. We are forwarding Permit No. SW8 070319MOD, dated May 15, 2008, for the construction of
the project, Ferguson Distributors.
This permit shall be effective from the date of issuance until August 8, 2017, and shall be subject to the
conditions and limitations as specified therein. Please pay special attention to the Operation and
Maintenance requirements in this permit. Failure to establish an adequate system for operation and
maintenance of the stormwater management system will result in future compliance problems.
If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to
request an adjudicatory hearing upon written request within sixty (60) days following receipt of this
permit. This request must be in the form of a written petition, conforming to Chapter 150B of the North
Carolina General Statutes, and filed with the Office of Administrative Hearings, P.O. Drawer 27447,
Raleigh, NC 27611-7447. Unless such demands are made this permit shall be final and binding.
If you have any questions, or need additional information concerning this matter, please contact Chris
Baker, or me at [phone].
Sincer ,
Edward Beck
Regional Supervisor
Surface Water Protection Section
ENB/csb: S:1WQSISTORMWATERIPERMIT1070319MOD.may08
cc: Jason R. Carmine, P.E., Coastal Land Design, PLLC
New Hanover County Inspections
City,, of Wilmington Stormwater Services
New Hanover County Engineering
Chris Baker
Wilmington Regional Office
Central Files
North Carolina Division of Water Quality 127 Cardinal Drive Extension Wilmington, NC 28405 Phone [phone]
Wilmington Regional Office Internet: www.ncwateraualitv.ors Fax [phone]
Noe Caro ina
tura,
Customer Service
1-877-623-6748
An Equal OpportunitylAffirmative Action Employer— 50% Recycled110°% Post Consumer Paper

State Stormwater Management Systems
Permit No. SW8 070319MOD
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
HIGH DENSITY SUBDIVISION DEVELOPMENT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of
North Carolina as amended, and other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
Jeffrey M. Stokley, Cape Fear Investment and Development, LLC
Ferguson Distributors
3881 US HWY 421 North, New Hanover County
FOR THE
construction, operation and maintenance of a wet detention pond in compliance with the
provisions of 15A NCAC 2H .1000 (hereafter referred to as the "ston-nwater rules') and
the approved stormwater management plans and specifications and other supporting
data as attached and on file with and approved by the Division of Water Quality and
considered a part of this permit.
This permit shall be effective from the date of issuance until August 8, 2017 and shall be
subject to the following specified conditions and limitations:
I. DESIGN STANDARDS
1. This permit is effective only with respect to the nature and volume of stormwater
described in the application and other supporting data.
2. This stormwater system has been approved for the management of stormwater
runoff as described in Section I.6 or�� page 3 of this permit.
3. Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of the permit.
4. The runoff from all built -upon area within the permitted drainage area of this
project must be directed into the permitted stormwater control system.
5. Each lot within the subdivision whose ownership is not retained by the permittee,
must submit a separate Offsite Stormwater Management Permit application
package to the Division of Water Quality and receive a permit prior to any
construction on the lot.
Page 2 of 8

State Stormwater Management Systems
Permit No. SW8 070319MOD
6. The following design elements have been permitted for this wet detention pond
stormwater facility, and must be provided in the system at all times.
a.
Drainage Area, acres:
13.84
Onsite, ft2:
602,992
Ofl:site, ft2:
Done
b.
Total Impervious Surfaces, ft2:
382,411
c.
Pond Depth, feet:
6
d.
TSS removal efficiency:
90%
e.
Design Storm, inches:
1.5
f.
Permanent Pool Elevation, FMSL:
14.5
g.
Permitted Surface Area @PP ft2:
39,262
h.
Permitted Storage Volume, ft�:
65,388
i.
Storage Elevation, FMSL:
16.00
j.
Controlling Orifice:
4" 0 pipe
k.
Permanent Pool Volume, ft3:
196,415
I.
Forebay Volume, ft3:
41,803
m.
Maximum Fountain Horsepower:
1/2
n.
Receiving Stream / River Basin:
Cape Fear River/Cape Fear
o.
Stream Index Number:
15-25-1-9
p.
Classification of Water Body:
"C; Sw"
II. SCHEDULE
OF COMPLIANCE
No homeowner/lot owner/developer shall fill in, alter, or pipe any drainage feature
(such as swales) shown on the approved plans as part of the stormwater
management system without submitting a revision to the permit and receiving
approval from the Division.
2. The permittee is responsible for verifying that the proposed built -upon area for
the entire lot does not exceed the maximum allowed by this permit. Once the lot
transfer is complete, the built -upon area may not be revised without approval
from the Division of Water Quality, and responsibility for meeting the built -upon
area limit is transferred to the individual property owner.
3. If an Architectural Review Board or Committee is required to review plans for
compliance with the BUA limit, the plans reviewed must include all proposed
built -upon area. Any approvals given by the Board do not relieve the homeowner
of the responsibility to maintain compliance with the permitted BUA limit.
4. The permittee shall submit to the Director and shall have received approval for
revised plans, specifications, and calculations prior to construction, for any
modification to the approved plans, including, but not limited to, those listed
below:
a. Any revision to the approved plans, regardless of size.
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area.
e. Further subdivision, acquisition, or sale of all or part of the project area.
The project area is defined as all property owned by the permittee, for
which Sedimentation and Erosion Control Plan approval or a CAMA Major
permit was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the
approved plan.
Page 3 of 8

State Stormwater Management Systems
Permit No. SW8 070319MOD
5. The Director may determine that other revisions to the project should require a
modification to the permit.
6. All stormwater collection and treatment systems must be located in either
dedicated common areas or recorded easements The final plats for the project
will be recorded showing all such required easements, in accordance with the
approved plans.
7. The Director may notify the permittee when the permitted site does not meet one
or more of the minimum requirements of the permit. Within the time frame
specified in the notice, the permittee shall submit a written time schedule to the
Director for modifying the site to meet minimum requirements. The permittee
shall provide copies of revised plans and certification in writing to the Director
that the changes have been made.
8. The stormwater management system shall be constructed in its entirety,
vegetated and operational for its intended use prior to the construction of any
built -upon surface.
9. During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately.
10. Upon completion of construction, prior to issuance of a Certificate of Occupancy,
and prior to operation of this permitted facility, a certification must be received
from an appropriate designer for the system installed certifying that the permitted
facility has been installed in accordance with this permit, the approved plans and
specifications, and other supporting documentation. Any deviations from the
approved plans and specifications must be noted on the Certification.
11. If the stormwater system was used as an Erosion Control device, it must be
restored to design condition prior to operation as a stormwater treatment device,
and prior to occupancy of the facility.
12. Permanent seeding requirements for the stormwater control must follow the
guidelines established in the North Carolina Erosion and Sediment Control
Planning and Design Manual.
13. The permittee shall at all times provide the operation and maintenance
necessary to assure that all components of the permitted stormwater system
function at optimum efficiency. The approved Operation and Maintenance Plan
must be followed in its entirety and maintenance must occur at the scheduled
intervals including, but not limited to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
c. Mowing and re -vegetation of side slopes.
d. Immediate repair of eroded areas.
e. Maintenance of side slopes in accordance with approved plans and
specifications.
f. Debris removal and unclogging of structures, orifice, catch basins and
piping.
g. Access to all components of the system must be available at all times.
14. Records of maintenance activities must be kept and made available upon
request to authorized personnel of DWQ. The records will indicate the date,
activity, name of person performing the work and what actions were taken.
Page 4 of 8

State Stormwater Management Systems
Permit No. SW8 070319MOD
15. This permit shall become void unless the facilities are constructed in accordance
with the conditions of this permit, the approved plans and specifications, and
other supporting data.
16. Prior to the sale of any lot, the following deed restrictions must be recorded:
a. The following covenants are intended to ensure ongoing compliance with
State Stormwater Management Permit Number SW8 070319MOD, as
issued by the Division of Water Quality under NCAC 2H.1000.
b. The State of North Carolina is made a beneficiary of these covenants to
the extent necessary to maintain compliance with the Stormwater
Management Permit.
C. These covenants are to run with the land and be binding on all persons
and parties claiming under them.
d. The covenants pertaining to stormwater may not be altered or rescinded
without the express written consent of the State of North Carolina, Division
of Water Quality.
e. Alteration of the drainage as shown on the approved plans may not take
place without the concurrence of the Division of Water Quality.
f. The maximum built -upon area for this parcel is 285,411. This allotted
amount includes any built -upon area constructed within the lot property
boundaries, and that portion of the right-of-way between the front lot line
and the edge of the pavement. Built upon area includes, but is not limited
to, structures, asphalt, concrete, gravel, brick, stone, slate, coquina and
parking areas, but does not include raised, open wood decking, or the
water surface of swimming pools.
g. Lots within CAMA's Area of Environmental Concern may be subject to a
reduction in their allowable built -upon area due to CAMA regulations.
h. All runoff on the lot must drain into the permitted system. This may be
accomplished through providing roof drain gutters, which drain to the
street, grading the lot to drain toward the street, or grading perimeter
swales and directing them into the pond or street. Lots that will naturally
drain into the system are not required to provide, these measures.
i. Built -upon area in excess of the permitted amount will require a permit
modification.
17. A copy of the recorded deed restrictions must be submitted to the Division within
30 days of the date of recording the plat, and prior to selling lots. The recorded
copy must contain all of the statements above, the signature of the Permittee, the
deed book number and page, and the stamp/signature of the Register of Deeds.
18. Prior to transfer of the permit, the stormwater facilities will be inspected by DWQ
personnel. The facility must be in compliance with all permit conditions. Any
items not in compliance must be repaired or replaced to design condition prior to
the transfer. Records of maintenance activities performed to date will be
required.
19. Decorative spray fountains will be allowed in the stormwater treatment system,
subject to the following criteria:
a. The fountain must draw its water from less than 2' below the permanent
pool surface.
b. Separated units, where the nozzle, pump and intake are connected by
tubing, may be used only if they draw water from the surface in the deepest
part of the pond.
c. The falling water trom the fountain must be centered in the pond, away from
the shoreline.
Page 5 of 8

State Stormwater Management Systems
Permit No. SW8 070319MOD
d. The maximum horsepower for the fountain's pump is based on the
permanent pool volume. The maximum pump power for a fountain in this
pond is 1 /2 horsepower.
20. Built upon area includes, but is not limited to, structures, asphalt, concrete,
gravel, brick, stone, slate, coquina and parking areas, but does not include
raised, open wood decking, or the ..later surface of swimming pools.
III. GENERAL CONDITIONS
1. This permit is not transferable to any person or entity except after notice to and
approval by the Director. In the event there is either a desire for the facilities to
change ownership, or there is a name change of the Permittee, a
"Name/Ownership Change Form" must be submitted to the Division of Water
Quality accompanied by appropriate documentation from the parties involved.
This may include, but is not limited to, a deed of trust, recorded deed restrictions,
Designer's Certification and a signed Operation and Maintenance plan. The
project must be in good standing with DWQ. The approval of this request will be
considered on its merits and may or may not be approved.
2. The permittee is responsible for compliance with all of the terms and conditions
of this permit until such time as the Director approves the transfer request.
3. Failure to abide by the conditions and limitations contained in this permit may
subject the Permittee to enforcement action by the Division of Water Quality, in
accordance with North Carolina General Statute 143-215.6A to 143-215.6C.
4. The issuance of this permit does not preclude the Permittee from complying with
any and all statutes, rules, regulations, or ordinances, which may be imposed by
other government agencies (local, state, and federal), which have jurisdiction.
5. In the event that the facilities fail to perform satisfactorily, including the creation of
nuisance conditions, the Permittee shall take immediate corrective action,
including those as may be required by this Division, such as the construction of
additional or replacement stormwater management systems.
6. The permit may be modified, revoked and reissued or terminated for cause. The
filing of a request for a permit modification, revocation and re -issuance or
termination does not stay any permit condition.
7. Permittee grants permission to staff of the DWQ to access the property for the
purposes of inspecting the stormwater facilities during normal business hours.
8. The permittee shall notify the Division of any name, ownership or mailing address
changes within 30 days.
9. A copy of the approved plans and specifications shall be maintained on file by
the Permittee for a minimum of ten years from the date of the completion of
construction.
Permit issued this the 15th day of May, 2008
NORTH,eAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
for Goleen H. Sullins, Dir
Division of Water Quality
Page 6 of 8

State Stormwater Management Systems
Permit No. SW8 070319MOD
By Authority of the Environmental Management Commission
Ferguson Distributors Page 1 of 2
Stormwater Permit No. SW8 0703191VIOD
New Hanover County
Designer's. Certification.
I, , as a duly registered in
the State of North Carolina, having been authorized to observe (periodically/weekly/full
time) the construction of the project,
(Project)
for (Project Owner) hereby state that, to the
best of my abilities, due care and diligence was used in the observation of the project
construction such that the construction was observed to be built within substantial
compliance and intent of the approved plans and specifications.
The checklist of items on page 2 of this form is a part of this Certification.
Noted deviations from approved plans and specifications:
Signature
Registration Number
Date
SEAL
Page 7 of 8

State Stormwater Management Systems
Permit No. SW8 070319MOD
Certification Requirements:
Page 2 of 2
.1. The drainage area to the system contains approximately the permitted
acreage.
2. The drainage area to the system contains no more than the permitted
amount of built -upon area.
3. All the built -upon area associated with the project is graded such that the
runoff drains to the system.
4. All roof drains are located such that the runoff is directed into the system.
5. The outlet/bypass structure elevations are per the approved plan.
6. The outlet structure is located per the approved plans.
7. Trash rack is provided on the outlet/bypass structure.
8. All slopes are grassed with permanent vegetation.
9. Vegetated slopes are no steeper than 3:1.
10. The inlets are located per the approved plans and do not cause short-
circuiting of the system.
11. The permitted amounts of surface area and/or volume have been
provided.
12. Required drawdown devices are correctly sized per the approved plans.
13. All required design depths are provided.
14. All required parts of the system are provided, such as a vegetated shelf, a
forebay, and the vegetated filter.
15. The required dimensions of the system are provided, per the approved
plan.
cc: NCDENR-DWQ Regional Office
New Hanover County Building Inspections
Page 8 of 8

DWQ USE ONLY
Date Received
Fee Paid
Permit Number
? 4
Sri 07031 g M 6
State of North Carolina
Department of Environment and Natural Resources
Division cif .".'ater Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may be photocopied for use as an original
I. GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
Cape Fear Investment & Development, LLC
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
Robert E. Huckabee, III, Manager
3. Mailing Address for person listed in item 2 above:
1611 Castle Hayne Road, Building B
City:Wilmington State:NC Zip:28401
Phone: (910 ) 359-6036 Fax: (910 ) 395-6605
Email:pavery p ckinleYbuilding.com
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
Ferguson Distributors
5. Location of Project (street address):
3881 US HWY 421 North
City:Wilmington County:New Hanover
6. Directions to project (from nearest major intersection):
Go west across the Isabel Holmes Bridge. Turn left at the stop light onto 421 North Project is on the left just
north of the I-40 ramp.
7. Latitude:34d 17' 57.85" N Longitude:77d 58' 39.41" W of project
8. Contact person who can answer questions about the project:
Name:Walter "Pete" Avery Telephone Number: (910 i 359-6036
Email:pavgU!Pmckinleybuilding.com
II. PERMIT INFORMATION:
1. Specify whether project is (check one): ❑New []Renew=BY:
Fora?SWU-101 Version 8.07 Page 1 of 4

2. If this application is being submitted as the result of a renewal or modification to an existing permit, list the
existing permit number. SW8 070319MOD and its issue date (if known) 2/18/2008
3. Specify the type of project (check one):
[]Low Density ®High Density ❑Redevelop ❑General Permit ❑Universal SMP ❑Other
4. Additional Project Requirements (check applicable blanks):
❑CAMA. Major ®Sedimentation/Erosion Control 0404/401 Permit ❑NPDES Stormwater
Information on required state permits can be obtained by contacting the Customer Service Center at
1-877-623-6748.
III. PROJECT INFORMATION
1. In the space provided below, summarize how stormwater will be treated. Also attach a detailed narrative
(one to two pages) describing stormwater management for the project.
Stormwater will be treated by one conventional stormater pond
2. Stormwater runoff from this project drains to the Cave Fear River basin.
3. Total Site Area: 13.84 acres 4. Total Wetlands Area: 0 acres
5. 100' Wide Strip of Wetland Area: 0 acres (not applicable if no wetlands exist on site)
6. Total Project Area**:13.84 acres
7. Project Built Upon Area:63.42
8. How many drainage areas does the project have?1
9. Complete the following information for each drainage area. If there are more than two drainage areas in the
project, attach an additional sheet with the information for each area provided in the same format as below.
Basin Information
Drainage Area 1
Drainage Area 2
Receiving Stream Name
Cape Fear River
Stream Class & Index No.
C;Sw 15-25-1-9
Drainage Area (sf)
602,992 sf
Existing Impervious* Area (sf)
0 sf
Proposed Impervious*Area (so
382,411 sf
% Impervious* Area (total)
63.42%
Impervious* Surface Area
Drainage Area 1
Drainage Area 2
On -site Buildings (sf)
70,365 sf
On -site Streets (sf)
0 sf
On -site Parking (so
170,544 sf
On -site Sidewalks (so
4,502 sf
Other on -site (sf)
137,000 sf
<----- FUTURE DEVELOPMENT
Off -site (sf)
n/a
Total (sf):
382,411 sf
00
" Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
**Total project area shall be calculated based on the current policy regarding inclusion of wetlands in the built upon area
percentage calculation.
Form SW-101 Version 8.07 Page 2 of

10. How was the off -site impervious area listed above derived?No off -site impervious area enters site.
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
One of the following deed restrictions and protective covenants are required to be recorded for all subdivisions,
outparcels and future development prior to the sale of any lot. If lot sizes vary significantly, a table listing each lot
number, size and the allowable built -upon area for each lot must be provided as an attachment.
Form DRPC-1
High Density Commercial Subdivisions
Form DRPC-2
High Density Developments with Outparcels
Form DRPC-3
High Density Residential Subdivisions
Form DRPC4
Low Density Commercial Subdivisions
Form DRPC-5
Low Density Residential Subdivisions
Form DRPC-6
Low Density Residential Subdivisions with Curb Outlets
By your signature below, you certify that the recorded deed restrictions and protective covenants for this
project shall include all the applicable items required in the above form, that the covenants will be binding
on all parties and persons claiming under them, that they will run with the land, that the required covenants
cannot be changed or deleted without concurrence from the State, and that they will be recorded prior to the
sale of any lot.
V. SUPPLEMENT FORMS
The applicable state stormwater management permit supplement form(s) listed below must be submitted for each
BMP specified for this project. Contact the Stormwater and General Permits Unit at [phone] for the status
and availability of these forms.
Form SW401-Low Density
Low Density Supplement
Form SW401-Curb Outlet System
Curb Outlet System Supplement
Form SW401-Off-Site System
Off -Site System Supplement
Form SW401-Wet Detention Basin
Wet Detention Basin Supplement
Form SW401-Infiltration Basin
Infiltration Basin Supplement
Form SW401-Infiltration Trench
Underground Infiltration Trench Supplement
Form SW401-Bioretention Cell
Bioretention Cell Supplement
Form SW401-Level Spreader
Level Spreader/Filter Strip/Restored Riparian Buffer Supplement
Form SW401-Wetland
Constructed Wetland Supplement
Form SW401-Grassed Swale
Grassed Swale Supplement
Form SW401-Sand Filter
Sand Filter Supplement
Form SWU-101 Version 8.07 Page 3 of 4

VI. SUBMITTAL REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ).
A complete package includes all of the items listed below. The complete application package should be
submitted to the appropriate DWQ Office. (Appropriate office may be found by locating project on the
interactive online map at ho://h2o.enr.state.nc.us/su/msi maps.htm)
1. Please indicate that you have provided the following required information by initialing in the space provided
next to each item.
• Original and one copy of the Stormwater Management Permit Application Form
• Original and one copy of the Deed Restrictions & Protective Covenants Form
■ Original of the applicable Supplement Form(s) and O&M agreement(s) for each BMP
• Permit application processing fee of $505 ($4,000 for Express) payable to NCDENR
• Calculations & detailed narrative description of stormwater treatment/management
• Copy of any applicable soil report
• Three copies of plans and specifications (sealed, signed & dated), including:
- Development/Project name
- Engineer and firm
- Legend
- North arrow
- Scale
- Revision number & date
- Mean high water line
Dimensioned property/project boundary
- Location map with named streets or NCSR numbers
Initials
J 2C.
J�2C
JRe-
JKC
J 2C
J 2c.
J PC.
- Original contours, proposed contours, spot elevations, finished floor elevations
- Details of roads, drainage features, collection systems, and stormwater control measures
- Wetlands delineated, or a note on plans that none exist
- Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations
Drainage areas delineated
- Vegetated buffers (where required)
VII. AGENT AUTHORIZATION
If you wish to designate authority to another individual or firm so that they may provide information on your
behalf, please complete this section.
Designated agent (individual or firm):Coastal Land Design, PLLC
Mailing Address:PO Box 1172
City: Wilmington State:NC Zip:28402
Phone: (910 ) 254-9333 Fax: (910 ) 254-0502
Email:jcarmine®coastallanddesign.net
VIII. APPLICANT'S CERTIFICATION
I, (print or type name of person listed in General Information, item 2) Robert E. Huckabee, III, Manager
certify that the information included on this perudt application form is, to the best of my knowledge, correct and
that the project will be constructed in conformance with the approved plans, that the required deed restrictions
and protectivegovenants will b recorded, and that the proposed project complies with the requirements of 15A
NCAC 2H . 00 I t
Signature:
Date: 5- 1 Z a $
Form SWU-101 Version 8.07 Page 4 of 4

R.
MAY 1 3 2008
BY: Form SW401-Wet D tention Basin O&M-Rev.3
Permit Number:5SW 2 U-70 31 9 /%l(�
(to be provided by DWQ)
Drainage Area Number:
Wet Detention Basin Operation and Maintenance Agreement
I will keep a maintenance record on this BMP. This maintenance record will be kept in a
log in a known set location. Any deficient BMP elements noted in the inspection will be
corrected, repaired or replaced immediately. These deficiencies can affect the integrity
of structures, safety of the public, and the removal efficiency of the BMP.
The wet detention basin system is defined as the wet detention basin,
pretreatment including forebays and the vegetated filter if one is provided.
This system (check one):
❑ does ® does not incorporate a vegetated filter at the outlet.
This system (check one):
❑ does ® does not incorporate pretreatment other than a forebay.
Important maintenance procedures:
- Immediately after the wet detention basin is established, the plants on the
vegetated shelf and perimeter of the basin should be watered twice weekly if
needed, until the plants become established (commonly six weeks).
- No portion of the wet detention pond should be fertilized after the first initial
fertilization that is required to establish the plants on the vegetated shelf.
- Stable groundcover should be maintained in the drainage area to reduce the
sediment load to the wet detention basin.
- If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through the emergency drain should be minimized to the
maximum extent practical.
- Once a year, a dam safety expert should inspect the embankment.
After the wet detention pond is established, it should be inspected once a month and
within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a
Coastal County). Records of operation and maintenance should be kept in a known set
location and must be available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall
be repaired immediately.
BMP element:
Potential problem:
How I will remediate the problem:
The entire BMP
Trash/debris is resent.
Remove the trash/debris.
The perimeter of the wet
Areas of bare soil and/or
Regrade the soil if necessary to
detention basin
erosive gullies have formed.
remove the gully, and then plant a
ground cover and water until it is
established. Provide lime and a
one-time fertilizer application.
�``FIVED
Vegetation is too short or too
long.
Maintain vegetation at a height of
approximately six inches.
Page 1 of 4

Permit Number: Z)W ? 0-70 31 UN
(to be provided by DWQ)
Drainage Area Number:
BMP element:
Potentialproblem:
How I will remediate theproblem:
The inlet device: pipe or
swale
The pipe is clogged.
Unclog the pipe. Dispose of the
sediment off -site.
The pipe is cracked or
Replace the pipe.
otherwise damaged.
Erosion is occurring in the
Regrade the swale if necessary to
swale.
smooth it over and provide erosion
control devices such as reinforced
turf matting or riprap to avoid
_
future problems with erosion.
The forebay
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design depth for
possible. Remove the sediment and
sediment storage.
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Erosion has occurred.
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion problems.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than spraying.
The vegetated shelf
Best professional practices
Prune according to best professional
show that pruning is needed
practices
to maintain optimal plant
health.
Plants are dead, diseased or
Determine the source of the
dying.
problem: soils, hydrology, disease,
etc. Remedy the problem and
replace plants. Provide a one-time
fertilizer application to establish the
ground cover if a soil test indicates
it is necessary.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than s ra mi .
The main treatment area
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design sediment
possible. Remove the sediment and
storage depth.
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Algal growth covers over
Consult a professional to remove
50% of the area.
and control the algal gTowth.
Cattails, phragmites or other
Remove the plants by wiping them
invasive plants cover 50% of
with pesticide (do not spray).
the basin surface.
Form SW401-Wet Detention Basin O&M-Rev.3 Page 2 Of 4

Permit Number: SbJ 0 0-76 31 g P70Z
(to be provided by DWQ)
Drainage Area Number:
BMP element:
Potentialproblem:
How I will remediate theproblem:
The embankment
Shrubs have started to grow
Remove shrubs immediately.
on the embankment.
Evidence of muskrat or
Use traps to remove muskrats and
beaver activity is present.
consult a professional to remove
beavers.
A tree has started to grow on
Consult a dam safety specialist to
the embankment.
remove the tree.
An annual inspection by an
Make all needed repairs.
appropriate professional
shows that the embankment
needs repair.
The outlet device
Clogging has occurred.
Clean out the outlet device. Dispose
of the sediment off -site.
The outlet device is damaged
Repair or replace the outlet device.
The receiving water
Erosion or other signs of
Contact the local NC Division of
damage have occurred at the
Water Quality Regional Office, or
outlet.
the 401 Oversight Unit at 919-733-
1786.
The measuring device used to determine the sediment elevation shall be such
that it will give an accurate depth reading and not readily penetrate into
accumulated sediments.
When the permanent pool depth reads 7.50 feet in the main pond, the
sediment shall be removed.
When the permanent pool depth reads 7.50 feet in the forebay, the sediment
shall be removed.
Sediment Removal
Bottom
7.00 1
FOREBAY
BASIN DIAGRAM
(fill in the blanks)
i ft Min.
Sediment
Storage
Permanent Pool Elevation 14.50
Pool
\- ..... Sediment Removal Elevation 7.00 Volume
Bottom Elevation
MAIN POND
1-ft
Storage
Form SW401-Wet Detention Basin O&M-R.ev.3 Page 3 of 4

Permit Number: 7 ) t
(to be provi ed by DWQ)
I acknowledge and agree by my signature below that I am responsible for the
performance of the maintenance procedures listed above. I agree to notify DWQ of any
problems with the system or prior to any changes to the system or responsible party.
Project nameTerguson Distributors
BMP drainage area number:Drainage Area #1
Print name:Robert E. Huckabee, III
Title:Manager
Address:1611 Military Cutoff Road, Building B, Wilmington, NC 28401
Date: — i Z - D S
Note: The legally responsible party should not be a homeowners association unless more than 50% of
the lots have been sold and a resident of the subdivision has been named the president.
I, L/1l/�CP,OGZ &A2110 , a Notary Public for the State of
UY
MAMCounty offd�t/ !'(1/1'i�Qllr�do hereby certify that
ROEVT J4j10-hA-6&F personally appeared before me this
day of , CgOQ& , and acknowledge the due execution of the
forgoing wet detention basin maintenance requirements. Witness my hand and official
seal,
H NOTARY s
PUBLIC _
SEAL
My commission expiresg,A:R -o l�
Form SW401-Wet Detention Basin O&M-Rev.3 Page 4 of 4

Permit No6w o u7636 J
(to be provided by DWQ)
OG W AT�cF,
HCD
O� QG
3
EHR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part 111) must be printed, filled out and submitted along with all of the required information.
i. PROJECT INFORMATIt
Project name
Contact person
Phone number
Date
Drainage area number
Drainage Area #1
Water
Ill. DESIGN INFORMATION
Site Characteristics
Drainage area
602,992.00
ft
Impervious area
382,411.00
fe
% impervious
63.42
%
Design rainfall depth
1.50
in
Storage Volume: Non -SR Waters
Minimum volume required
46,790.00
fe
Volume provided
65,388.00
f6
Storage Volume: SR Waters
1-yr, 24-hr runoff depth
in
Pre -development 1-yr, 24-hr runoff
fe
Post -development 1-yr, 24-hr runoff
fe
Minimum volume required
i
Volume provided
if
Peak Flow Calculations
1-yr, 24-hr rainfall depth
3.79
in
Rational C, pre -development
0.29
(unitless)
Rational C, post -development
0.71
(unitless)
Rainfall intensity: 1 -yr, 24-hr storm
0.16
in/hr
Pre -development 1-yr, 24-hr peak flow
0.80
fe/sec
Post -development 1-yr, 24-hr peak flow
25.40
if/sec
Pre/Post 1-yr, 24-hr peak flow control
24.80
fe/sec
Basin Elevations
Basin bottom elevation
6.00
ft
Sediment cleanout elevation
7.00
ft
Bottom of shelf elevation
14,00
ft
Permanent pool elevation
14.50
ft
SHWT elevation
13:DO
ft
Top of shelf elevation
15:00
ft
Temporary pool elevation
1600
ft
RTC_ C"IT,IVED
MAY 13 Z008
Fn— SW401-Wet D A
Parts i. & il. Design Summary, Page 1 of 2

Permit Nlo."5w 3 070 3/ g jgo
(to be provided by DWQ)
Il, DESIGN INFORMATION
Volume and Surface Area Calculations
SAIDA ratio
Surface area at the bottom of shelf
Volume at the bottom of shelf
Permanent pool, surface area required
Permanent pool, surface area provided
Permanent pooi volume
Average depth for SAIDA tables
Surface area at the top of shelf
Volume at the top of shelf
Forebay volume
Forebay % of permanent pool volume
Temporary pool, surface area provided
Drawdown Calculations
Treatment volume drawdown time
Treatment volume discharge rate
Pre -development 1-yr, 24-hr discharge
Post -development 1-yr, 24-hr discharge
Additional Information
Diameter of orifice
Design TSS removal
Basin side slopes
Vegetated shelf slope
Vegetated shelf width
Length of Towpath to width ratio
I annth to width ratin
Trash rack for overflow & orifice?
Freeboard provided
Vegetated filter provided?
Recorded drainage easement provided?
Capures all runoff at ultimate build -out?
Drain mechanism for maintenance or emergencies
4.54
(unitless)
26,741.00
fe
140,2.20.00
fe
27.358.00
fe
39,262.00
fe
196.+415.00
ft'
5.00
ft
34.289.00
fe
170,893.00
f?
41,803.00
fO
21.28
%
46,294.00
ftz
2.70
days
0.28
Fels
0.60
fees
0.60
Fels
4
in
90
%
3.00
:1
10.00
:1
1HO
ft
3.00
:1
3.OD
:1
Y
(Y or N)
2.40
ft
N
(Y or N)
Y
(Y or N)
Y
(Y or N)
Pumps
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
Design must be based on 90% TSS removal
OK
OK
Form SW401-Wet Detention Basin-Rev.4 Parts 1. & II. Design Summary, Page 2 of 2

Permit No.6W �U703191 /iic,0
(to be provided by DWQ)
III. REQUIRED ITEMS CHECKLIST _ T
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Pagel Plan
Initials Sheet No.
JRC- SW-01 1. Plans (l" 50' or larger) of the entire site showing:
- Design at ultimate build -out,
- Off -site drainage (if applicable),
- Delineated drainage basins (include Rational C coefficient per basin),
- Basin dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
Proposed drainage easement and public right of way (ROW),
- Overflow device, and
Boundaries of drainage easement.
JRL 2. Partial plan (1" = 30' or larger) and details for the wet detention basin showing:
- Outlet structure with trash rack or similar,
Maintenance access,
Permanent pool dimensions,
- Forebay and main pond with hardened emergency spillway,
Basin cross-section,
Vegetation specification for planting shelf, and
Filter strip.
JRC
SW-0Z
3. Section view of the dry detention basin (1" 20' or larger) showing:
- Side slopes, 3:1 or lower,
- Pretreatment and treatment areas, and
- Inlet and outlet structures.
J"_
Sw_UL
4. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified
on the plans prior to use as a wet detention basin.
�AC_
CAICS
5. A table of elevations, areas, incremental volumes & accumulated volumes for overall pond and for Forebay,
to verify volume provided.
dtCL
sw-oZ
6. A construction sequence that shows how the wet detention basin will be protected from sediment until the
entire drainage area is stabilized.
7. The supporting calculations.
8. A copy of the signed and notarized operation and maintenance (0&M) agreement.
JOWL
9. A copy of the deed restrictions (if required).
10. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. County
soil maps are not an acceptable source of soils information.
Form SW401-Wet Detention Basin-Rev.4 Part III. Required items Checklist, Page 1 of 1

P. 01
TRANSACTION REPORT
t
l<
MAY-16-2008 FRI
07:09 AM
�K
t
�K FOR: NCDENR
9103502004
�K
�
lc
SEND
Al
A
�c DATE START RECEIVER
TX TIME PAGES TYPE
NOTE
M# DP �c
MAY-16 07:05 AM 92540502
4'42" 9 FAX TX
OK
428
�
lc
TOTAL
4M 42S PAGES: 9
lc
�
'
State of North Carol><na.
Department of Env#onment and Natural Resources
Wilmington Regional Office
MichaelF. Easley, Governor I William G, Ross, Jr., Secretary
FAX COWER SKEET
Date: May 16, 2008
To: Jason R. Carmine P.E.
Co: Coastal Land Design, PLLC
Fax: [phone]
Re: E_ XUresS Permit Fe_ rr
No. Pages (excl. cover): 8
Express Pernutting
From. Sandra Exum
Phone: [phone]_
Pax: [phone]
tuni AfFrmativc Action Employer
127 Cardinal Drive Extension, Wilmington, NC 284015 • [phone] • An Equal opportunity

Coastal Land Design, PLLC.
P. O. Box 1172 Wilmington, NC 28402
Phone:[phone] Fax:[phone]
To: NCDENR-Division of Water Quality
127 Cardinal Drive Extension
Wilmington, NC 28405
(910) 796 - 7215
Attn Mr. Chris Baker
Transmittal
Date: May 13, 2008
File: 650-03
Subject:
Ferguson Distributors Stormwater Plan
Modification to Permit SW8 070319MOD
❑ As Requested ❑ For Your Files ❑ For Distribution ® For your Review / Action / Approval
❑ Sent via Mail ❑ Sent via Courier
Quantity
Drawing No.
Description
1
Check
In the Amount of $4,000.00
1
Original
Stormwater Management Permit Application Form (SWU-101 Version 8.07)
1
Copy
Stormwater Management Permit Application Form (SWU-101 Version 8.07)
1
Original
Wet Detention Basin Supplement (SW401-Wet Detention Basin-Rev.4)
1
Original
Wet Detention Basin I&M Agreement (SW401-Wet Detention Basin I&M — Rev.3)
1
Copy
Stormwater Management Plan Narrative
1
Copy
Stormwater Management Plan Calculations
1
Copy
Stormwater Permit SW8 070319MOD issued on 2/18/08
1
Copy
Soils Report
3
Copies
Stormwater Management Plans
REMARKS
Transmittal-NCDENR 05-13-08.doc

Stormwater Narrative
For
Ferguson Distributors
New Hanover County, North Carolina
Prepared by:
Coastal Land Design, PLLC
Civil Engineering / Landscape Awbitectwe / Construction Management
P.O.$ox 1172
Wilmington, NC28402
Prepared for:
Phone: [phone]
Fax:[phone]
Cape Fear Investment & Development, LLC
1611 Castle Hayne Road, Building B
Wilmington, NC 28401
10
May 6, 2008
`f
AEC ,EIVED
MAY 1 3 2008
BY:

Narrative
Proiect Description
This stormwater design is for an approximately 13.84 acre business park off of N.C. Highway 421 in New
Hanover County. This project is a high density stormwater project that uses storm sewers to convey
stormwater to an onsite conventional stormwater pond. This submittal is a modification to previously
approved stormwater permit number SW08 070319MOD. The total amount of impervious surface for this
modification is 382,411 sf which will consist of a building, parking lot, sidewalk, and allocations for future
development. The proposed stormwater pond is designed to meet both NCDENR's and New Hanover
County's stormwater requirements.
Site Description
The topography of the Ferguson Distributors is slightly rolling with mild slopes ranging from 0.5% to 1 % and
is heavily vegetated with a thick pine forest. The site ultimately drains to the Cape Fear River 18-(63), a
waterway classified as C:Sw. The elevations on this project ranges from 14 feet MSL to 18 feet. The majority
of the soils, according to the Soil Survey of New Hanover County, are Lakeland sands and Leon sands.
These soils have a soil hydrologic group of A and D respectively. This property is zoned IND-2. A seasonal
high water table evaluation was performed at the main pond basin and it was determined to exist 36 inches
below grade. The existing grade at the boring location is approximately 16fmsl, so the seasonal high water
table is estimated to be at an elevation of 13.00fmsl. Please refer to the soil boring tests included with this
submittal.
Stormwater Treatment
Storm sewers will be installed to route stormwater to the proposed stormwater pond. This site will be graded
such that stormwater is directed towards inlet boxes where all drainage from impervious surfaces will be
collected and get routed to the proposed stormwater pond. The proposed stormwater pond is designed
according to NCDENR's and New Hanover County's stormwater requirements.
The stormwater pond has been designed to meet NCDENR's capacity analysis as well as New Hanover
County's pre -post requirements. The blcoddown orifice is designed to drain down the first 1.5" of rainfall
within two (2) to five (5) days. The permanent pool elevation for the pond is 14.50fmsl. The riser elevation is
set at 16.00' which satisfies both NCDENR storage volume requirement as well as New Hanover County's
pre -post requirement for the 25 year storm event. The elevation of the emergency spillway is at 17.5' and the
top of the pond is 18.4' which are the elevations needed in order to pass the 100 year storm event solely
through the spillway as per New Hanover County regulations. The width of the emergency spillway for the
proposed pond will be 50 If and is designed so that New Hanover County's top of dam requirement could be
met. With the design conditions set as listed above, the conventional stormwater pond can safely route the
100-year storm event.
New Hanover County requires that the post -development site discharge for the 25-, 10-, and 2-year storm
events are lower than the pre -development discharge for the same storm events. The pre -development
discharge for this site for the 25-, 10-, and 2-year storm events are 25.62cfs, 16.82cfs, and 2.01 cfs,
respectively. The post -development discharge for the same three storm events are 23.76cfs, 15.08cfs, and
1.98cfs, respectively. Since the post -development discharge is not greater than the pre -development
discharge for the 25-, 10- and 2-year storm events, this site meets New Hanover County's pre -post
discharge requirement.

— t5LO Q-20 3l g mesh
Supplemental Stormwater Calculations
For
Ferguson Distributors
New Hanover County, North Carolina
Prepared by:
Coastal Land Desim, PLLC
Civil Engineering / Landscape Architecture / Construction Management
P:O.Box 1172
Wilmington, NC 28402
Prepared for:
Phone: [phone]
Fax:[phone]
Cape Fear Investment & Development, LLC
1611 Castle Hayne Road, Building B
Wilmington, NC 28401 {'''%
May 6, 2008
MAY 1 8 2008

Wipe System Design
For
Ferguson Distributors
New Hanover County, North Carolina

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Stormwater Pond Capacity Design
For
Ferguson Distributors
New Hanover County, North Carolina

Wet Detention Basin Design Sheet
_Ferguson Site
Stormwater Pond
Total Drainage Area, Ad = 11 602992 [sf]
Buildings/Lots:
Parking Lot/ Driveway:
Sidewalk:
Future:
70,365
170,544
4,502
137,000
[sf]
[sf]
[sf]
[sf]
Total Impervious Area, Ai = 1 382,411 [sf]
Surface Area Calculations
Forbay Permanent Volume
Pond
Contour Elevation
Pond
Contour Area
Increment. Volume
Accum. Volume
-----Lfm--slL
rsqft
ICU ft
rcu ft
6.00
2,737
Sediment Storage
7.00
11 3,256
0
0
8.00
3,807
3,532
3,532
9.00
s 4,390
4,099
7,630
10.00 IF--5-.00-4--1
4,697
12,327
11.00
5,652
5,328
17,655
12.00
6,331
5,992
23,647
13.00 11
7,042 1
6,687
30,333
14.00
7,788
7,415
37,748
14.50
8,431
4,055
41,803
Main Pond Permanent Volume
Contour Elevation
Contour Area
Increment. Volume
I
Accum. Volume
fmsll
[sq ft
rcu ft
cu ft
6.00
12,354
Sediment Storage
7.00
13,902
0
0
8.00
IF-1-5-.521---1
14,712
14,712
9.00
1 17,205
16,363
31,075
10.00
185968
18,087
49,161
11.00
20,803
19,886
69,047
12.00
22,711 1
21,757
90,804
13.00
24,690
23,701
114,504
14.00
26,741
25,716
140,220
14.50
30,831
14,393
154,613
Average Depth, d = Accumulative Volume _ Permenant Pool Surface Area
Average Depth, d = ( 41803cf + 154613cf) _ (8431 sf + 30831 sf )
Average Depth, d = 5.00 [ft]
Minimum Average Depth = 3ft < 5.00 < 6ft = Maximum Average Depth OK

Percent Impervious pmp):
Imp= EAi/Ad
Imp = 382411 / 602992.23
Imp = 1 63.42 [%]
Sediment Removal Efficiency (Percent) = 11 90 A
SA/DA Ratio Determination
Higher Percentage = 70 SA/DA %
Higher Depth = 5.5 4.50
Lower Depth = 5 5.00
Lower Percentage = 60 SA/DA %
Higher Depth = 5.5 3.90
Lower Depth = 5 4.30
Pond Shall Have an Average Depth of 5 ft and Be Designed to Remove 90% TSS
SA/DA = 1 4.54 [%]
Required Surface Area at Permanent Pool Elevation (14.5 fmsl) for Pond
SAREo. _ (SA/DA)*Ad
SAREa. _ (4.54/100)*602992.23sf
SAREQ. = 1 27.358 [sf]
SA Provided = 39,262 >
Temporary Storage Volume Calculations
Minimum Required Volume (Simple Method by Tom Scheuler):
Receiving water body name ....................... 11 Cape Fear River
Receiving water body classification .............. F C;Sw
Receiving water body location.....................11 New Hanover Coun , NC
First Flush Volume Required, P = 1.5 [in]
Rv 0.05 + 0.009 * (Imp)
Rv = 0.05 + 0.009*(63.42)
Rv = 1 0.621
Volume = P * Rv * Ad
Volume = (1.5/12)*(0.621)*(602992.23sf)
Volume = 46,790 [sf]
Ponds: Stage Storaqe Function
1 st - SA/DA @ Depth Interpol
SA/DA at Imp = 70%, d =5 ft
SA/DA at Imp = 60%, d =5 ft
2nd - SA/DA @ Impervious Interpolation
SA/DA Ratio at Imp=63.42%
SA/DA %
5.00
4.30
SA/DA %
4.54
27,358 = SA Required OK
Contour Elevation
Contour Area
CA
Incremental Storage
Accumlative
Storage S
rfmsIj
rsq
rcq
1cf1
14.50
39,262
0
0
15.00
43,234
20,624
20,624
16.00
46,294
44,764
65,388
17.00
49111
47,703
113,091
18.00
51,985
50,548
163,639

Required Temporary Storage Volume, RTSV..........
Height of First Flush of Runoff ...........................
Permanent Pool Elevation, PPE .........................
Minimum Temporary Pool Elevation, MTPE...........
Designed Temporary Pool Elevation, DTPE...........
Surface Area at Temporary Pool Elevation............
Designed Temporary Storage Volume, DTSV.........
Vol. Provided = 65,388 >
Forbay Sizing Calculations
........ 46,790 [cf]
....... 1.08 [ft]
........ 14.50 [fmsl]
....... 15.58 [fmsl]
....... 16.00 [fmsl]
....... 46,20,A [sf]
65,388 [cf]
Total Basin Volume = 196,415 [cf]
Forebay Volume = 41,803 [cf]
46,790 = Vol Required OK
Min Forbay Volume = (18%)*(Total Basin Volume)
Min Forbay Volume = (18%) * (196415cf)
Min Forbay Volume = r 5,355 1 [cf]
Max Forbay Volume = (22%)*(Total Basin Volume)
Max Forbay Volume = (22%) * (196415cf)
Max Forbay Volume =F 3,211 1 [cf]
Min FB Vol = 35355cf > 41,803 > 43211cf = Max FB Vol OK
Drawdown Orifice Sizing Calculations
Orifice Diameter, D = 4.0E[in]
Orifice Coefficient, Cd = 0.6
Ao = 0.25*p*(D)2
Ao = 0.78540*(4in/12in/ft) ^ 2
Ao = 1 0.087 [sf]
Qorifice = Cd*Ao*(2g*Havg)0-50
Qorifice =(0.6)*(0.087sf)*(64.4fpss*0.44ft) ^ 0.E
Qorifice = 1 0.280 [cfs]
2 days < 2.7 days
Outlet Design Calculations
Havg= (DTPE - PPE - D/2) / 3
Havg = (16ft- 14.5ft- 0.50*4in/12in/ft) / 3
Havg = 0.44 A
tdd = DTSV / Qorifice
tdd = ( 65388cf / 0.28cfs) / 86,400sec/day
tdd = 2.7 [days]
< 5 days OK
Principal Spillway Barrel Design (25 year Storm Event)
25-Year Riser Flow, Q25
77.5
[cfs] <-- See Hydrograph Routing
Spillway Barrel Diameter, D =
36
[in]
Spillway Barrel Invert, Inv =
14.40
[fmsl]
Number of Rarrels, Nh =
0
[eac]
Designed Barrels Slope, S =
1.00
[%]
Barrel Roughness, n =
0.011
[CPP]

Flow per Barrel, qb = (1.49/n)*(Ab)*R0.67*So50
Flow per Barrel, qb =(1.49/0.011)*(0.7854*(36in/12in/ft))*(36in/48) ^ 0. 67) * (1 /100) ^ 0.50
Flow per Barrel, qb = 1 79.0 [cfs]
Total Flow = Nb*qb
Total Flow = 1 *79cfs
Total Flow = 1 79 [cfs]
Flow Provided 79 > 77.5 = Flow Req'd
Emergency Spillway Design (100-yr Storm Event)
100-Year Spillway Flow, Q100 = 1 101.9 [cfs] <-- See Hydrograph Routing
Top of Bank Elevation, TOP = 18.4 [fms]]
Design Spillway Invert, DSI = 17.5 [fmsl]
Spillway Weir Coefficient, Cw = 3.0 [earthern]
Available Head for Discharge, Hs = TOP - DSI
Available Head for Discharge, Hs = 18.4fmsl - 17.5fmsl
Available Head for Discharge, Hs = 0.90 [ft]
Required Length of Spillway, Lsr = 0100,post / (Cw *Hs' 5)
Required Length of Spillway, Lsr = 102 / (3 * (0.9ft ^ 1.50) )
Required Length of Spillway, Lsr = 40 [ft]
Designed Length of Spillway, Lsd = 50 [ft]
Length Provided = 50 > 40 = Length Req'd
Channel Roughness, n = 0.035 [earthern]
Channel Side Slope, m = 3 [m:1]
Conveyance Factor, K = (Lsd*Hs + m*Hs2)1,667/ (Lsd + 2*Hs* (1+m2)0.nO.667
Conveyance Factor, K = 50*0.9 + 3*0.9 ^ 2) ^ 1.667 / (50 + 2*0.9* (1-i-3^ 2) ^ 0.50) ^ 0.667
Conveyance Factor, K = 42.612
Mimimum Channel Slope, Sm = 100*(Q100,post/ (1.49*K/n))2
Mimimum Channel Slope, Sm = 100*(102 / (1.49*42.612/0.035)) ^ 2
Mimimum Channel Slope, Sm = 0.32 %
Designed Channel Slope, Sd = 6.00 %
OK
OK
Slope Provided = 6.00 > 0.32 = Slope Req'd OK

Stormwater Pond Routing Design
For
Ferguson Distributors
New Hanover County, North Carolina

Drainage Basin Characteristics
Pre -Development: Woods; Good Condition
Soil
Area
SHG
CN
Rational C
Area x CN
Area x C
naL
rsfl 1
r---1
rsfl
I rsfj
Lakeland Sand
390,179 A�
30
0.15
11,705,370
58,527
Leon Sand
212,813 D
77
0.54
16,386,601
114,919
Total
602,992
28,091,971
1 173,446
Area Weighted CNPfe = E( Area x CN) / E(Area)
Area Weighted CNPfe = 2809�1971�—sf / 6—sf / 602992sf
Area Weighted CNPfe = 46.6
Area Weighted CPfe = E( Area x C ) / E( Area )
Area Weighted CPre = 1 73446sf
� 992sf
Area Weighted CPfe = 0.29
Post -Development Conditions
Item
Area
Impervious
Rational C
Area x Imp
Area x C
name
s
%
--- i
Isqs
On -Site Buildings
70,365
100
0.95
70,365
66,847
On -Site Streets
100
0.95
0
0
0n-Site Parking
170,544
100
0.95
170,544
162,017
On -Site Sidewalks
4,502
100
0.95
4,502
4,277
Other On -Site Club House
100
0.95
0
0
100
0.95
137,000
130,150
Mana ed Lawn
220 500
®0
0
63,448
Total
602,992
382,411
426,739
Area Weighted Impervious = E( Area x Imp) / E( Area )
Area Weighted Impervious = 382411 sf / 602992sf
Area Weighted Impervious = 63.49'0
Impervious Weighted CNPoSt = 98*(Impervious%) + CNPfe*(Pervious%)
Impervious Weighted CNPast = 98*(0.634) -+ 46.6*(1-0.634)
Impervious Weighted CNPos, = 79.2
Area Weighted Cp,,t = E( Area x C ) / E( Area)
Area Weighted CPsst = 426739sf / 602992sf
Area Weighted CPost = 0.71

Hydro -graphs (Hydraflow Hydragraphs 2007)
Drainage a Area ........................... 13.843 [acres] 1-yr24-hrRainfall -------- 3.79 [in]
Pre Development CN.................. 46.6 2-yr 24-hr Rainfall........ 4.50 [in]
Post Development CN................ 79.2 10-yr 24-hr Rainfall....... 7.00 [in]
Average Basin Slope .................. 0.75 [%] 25-yr 24-hr Rainfall....... 8.05 [in]
Pre -Hydraulic Length .................. 700 [ft] 100-yr 24-hr Rainfall..... 10.00 [in]
Post -Hydraulic Length ................ 1 1,100 [ft] Rainfall Distriution........ -Type-Ill
Shape Factor .............. 1 484
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0.000
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0.000
n u.uuu i
0.000
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0.000
u.lb4
0.158
u.3zl
0.327
U.bb9
0.697
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.162
0.332
0.705
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.166
0.338
0.713
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.170
0.343
0.721
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.174
0.349
0.730
0.000
0.000
0.000
0.000
0.000 1
0.000
0.000
0.178
0.354
0.738
0.000
0.000
0.000
0.000
0.000 1
0.000
0.000
0.182
0.360
0.746
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.187
0.365
0.755
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.191
0.371
0.763
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.195 1
0.377
0.771

Pre -Development Discharges
Post- Develo ment Inflows
Time
min
1- ear
cfs
27ear
cfs
1 10- ear
cfs
25- ear
cfs
1 00-ear
cfs
1- ear
cfs
2-year
cfs
10- ear
cfs
25 ear
cfs
100- ear
ifs
437
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.200
0.382
0.780
438
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.204
0.388
0.788
439
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.209
0.394
0.797
440
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.213
0.400
0.806
441
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.217
0.406
0.814
442
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.222
0.412
0.823
443
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.227
0.418
0.832
444
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.231
0.424
0.840
445
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.236
0.430
0.849
446
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.240
0.436
0.858
447
0.000
0.000
0.000
0.000
0.000
0.000
0,000
0.245
0.442
0.867
448
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.250
0.448
0.876
449
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.254
0.454
0.885
450
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.259
0.460
0.894
451
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.264
0.467
0.903
452
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.269
0.473
0.912
453
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.274
0.479
0.921
454
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.279
0.486
0.930
455
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.284
0.492
0.940
456
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.289
0.498
0.949
457
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.293
0.505
0.958
458
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.299
0.511
0.968
459
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.304
0.518
0.977
460
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.309
0.524
0.987
461
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.314
0.531
0.996
462
1 0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.319
0.538
1.006
463
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.324
0.544
1.015
464
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.329
0.551
1.025
465
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.334
0.558
1.034
466
0.000
0.000
0.000 _
0.000
0.000
0.000
0.000
0.340
0.565
1.044
467
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.345
0.571
1.054
468
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.350
0.578
1.064
469
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.356
0.585
1.073
470
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.361
0.592
1.083
471
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.366
0.599
1.093
472
0.000
0.000
0.000
0.000
0.000 1
0.000
0.000
0.372
0.606
1.103
473
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.377
_
0.613
1.113
474
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.383
0.620
1.123
475
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.388
0.627
1.133
476
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.394
0.634
1.143
477
0.000
0.000
0.000
0.000 1
0.000
0.000
0.000
0.400
0.641
1.153
478 1
0.000
0.000
0.000
0.000
0.000
0.000 1
0.000
0.405
0.648 1
1.163
479
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.411
0.656
1.174
480
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.416
0.663
1.184
481
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.422
0.670
1.194
482
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.428
0.678
1.205
483
0.000
0.000
0.000
0.000 1
0.000
0.000
0.000
0.434
0.685
1.215
484
0.000
0 000
0.000
0.000
0.000
0.000
0.000
0.440
0.693
1.226
485
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.446
0.701
1.238
486
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.452
0.709
1.250
487
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.459
0.718
1.262
488
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.466
0.727
1.275
489
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.473
0.736
1.289
490
0.000
0.000
0.000
0.000
0.000
0.000
0.001
0.480
0.746
1.303
491
0.000
0.000
0.000
0.000
0.000
0.000
0.001
0.488
0.756
1.318
492
493
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.002
0.003
0.496
0.504
0.766
0.776 1
1.333
1.348
494
0.000
0.000
0.000
0.000
0.000
0.000
0.004
0.512
0.787
1.364
495
0.000
0.000
0.000
0.000
0.000
0.000
0.006
0.520
0.529
0.798
1.381
496
0.000
0.000
0.000
0.000
0.000
0.000
0.007
0.809
1.397
497
0.000
0.000
0.000
0.000
0.000
0.000
0.010
0.537
0.821
1.414
498
0.000
0.000
0.000
0.000
0.000
0.000
0.012
0.546
0.832
1.431
499
0.000
0.000
0.000
0.000
0.000
0.000
0.014
0.554
0.843
1.448
500
0.000
0.000
0.000
0.000
0.000
0.000
0.017
0.563
0.855
1.465

Pre -Development Discharges
Post -Development Inflows
Time
1 1- ear
2- ear
10-year
I 25- ear
I 100- ear
1- ear
2-year
1 10- ear
25- ear
1 100- ear
min
cfs]
[cfs]
[cfs
cfs
cfs
cfs
cfs]
I [cfs
cfs
cfs
501
0.000
0.000
0.000
0.000
0.000
0.000
0.020
0.572
0.867
1.482
502
0.000
0.000
0.000
0.000
0.000
0.000
0.023
0.581
0.879
1.500
503
0.000
0.000
0.000
0.000
0.000
0.000
0.026
0.590
0.891
1.517
504
0.000
0.000
0.000
0.000
0.000
0.000
0.029
0.599
0.903
1.535
505
0.000
0.000
0.000
0.000
0.000
0.000
0.032
0.609
0.915
1.553
506
0.000
0.000
1 0.000
0.000
0.000
0.000
0.035
0.618
0.927
1.570
507
1 0.000
0.000
0.000
0.000
0.000
0.000
0.039
0.627
0.939
1.588
508
0.000
0.000
0.000
0.000
0.000
0.000
0.042
0.637
0.952
1.606
509
0.000
0.000
0.000
0.000
O.00D
0.000
0.046
0.647
0.964
1.625
510
0.000
0.000
0.000
0.000
0.000
0.000
0.049
0.656
0.977
1.643
511
0.000
0.000
0.000
0.000
0.000
6.000
0.053
1 0.666
0.990
1.661
512
0.000
0.000
0.000
0.000
0.000
0.000
0.056
0.676
1.002
1.680
513
0.000
0.000
0.000
0.000
0.000
0.000
0.060
0.686
1.015
1.699
514
0.000
0.000
0.000
0.000
0.000
0.000
0.064
0.696
1.028
1.718
515
0.000
0.000
0.000
0.000
0.000
0.000
0.067
0.706
1.041
1.736
516
0.000
0.000
0.000
0.000
0.000
0.000
0.071
0.716
1.055
1.755
517
0.000
0.000
0.000
0.000
0.000
0.000
0.075
0.726
1.068
1.775
518
0.000
0.000
0.000
0.000
0.000
0.000
0.079
0.737
1.081
1.794
519
0.000
0.000
0.000
0.000
0.000
0.000
0.083
0.747
1.095
1.813
520
0.000
0.000
0.000
0.000
0.000
0.000
0.087
0.758
1.108
1.833
521
0.000
0.000
0.000
0.000
0.000
0.000
0.091
0.768
1.122
1.852
522
0.000
0.000
0.000
0.000
0.000
0.000
0.095
0.779
1.136
1.872
523
0.000
0.000
0.000
0.000
0.000
0.000
0.099
0.790
1.150
1.892
524
0.000
0.000
0.000
0.000
0.000
0.000
0.103
0.801
1.164
1.912
525
0.000
0.000
0.000
0.000
0.000
0.000
0.108
0.812
1.178
1.932
526
0.000
0.000
0.000
0.000
0.000
0.000
0.112
0.823
1.192
1.952
527
0.000
0.000
0.000
0.000
0.000
0.000
0.116
0.834
1.206
1.972
528
0.000
0.000
0.000
0.000
0.000
0.000
0.121
0.845
1.221
1.993
529
0.000
0.000
0.000
0.000
0.000
0.000
0.125
0.857
1.235
2.013
530
0.000
0.000
0.000
0.000
0.000
0.000
0.130
0.868
1.250
2.034
531
0.000
1 0.000
0.000
1 0.000
0.000
0.000
0.135
0.879
1.264
2.054
532
0.000
0.000
0.000
0.000
0.000
0.001
0.139
1 0.891
1.279
2.075
533
0.000
0.000
0.000
0.000
0.000
0.001
0.144
0.903
1.294
2.096
534
0.000
0.000
0.000
0.000
0.000
0.002
0.149
0.914
1.309
2.117
535
0.000
0.000
0.000
0.000
0.000
0.003
0.154
0.926
1.324
2.138
536
0.000
0.000
0.000
0.000
0.000
0.005
0.158
0.938
1.339
2.160
537
0.000
0.000
0.000
0.000
0.000
0.007
0.163
0.950
1.354 1
2.181
538
0.000
0.000
0.000
0.000
0.000
0.009
0.168
0.962
1.369
2.202
539
0.000
0.000
0.000
0.000
0.000
0.011
0.173
0.974
1.385
2.224
540
0.000
0.000
0.000
0.000
0.000
0.014
0.179
0.987
1.400
2.246
541
0.000
0.000
0.000
0.000
0.000
0.017
0.184
0.999
1.416
2.267
542
0.000
0.000
0.000
0.000
0.000
0.020
0.189
1.011
1.432
2.289
543
0.000
0.000
0.000
0.000
0.000
0.023
0.194
1.024
1.447 1
2.311
544
0.000
0.000
0.000
0.000
0.000
0.026
0.199
1.036
1.463
2.333
545
0.000
0.000
0.000
0.000
0.000
0.030
0.205
1.049
1.479
2.356
546
0.000
0.000
0.000
0.000
0.000
0.033
0.210
1.062
1.495
2.378
547
0.000
0.000
0.000
0.000
0.000
0.037
0.216
1.075
1.511
2.400
548
0.000
0.000
0.000
0.000
0.000
0.041
0.221
1.088
1.528
2.423
549
0.000
0.000
0.000
0.000
0.000
0.045
0.227
1.101
1.544
2.446
550
0.000
0.000
0.000
0.000
0.000
0.048
0.233
1.114
1.560
2.468
551
0.000
0.000
0.000
0.000
0.000
0.052
0.238
1.127
1.577
2.491
552
0.000
0.000
0.000
0.000
0.000
0.056
0.244
1.140
1.594
2.514
553
0.000
0.000
0.000
0.000
0.-0-00---1
0.060
0.250
1.153
1.610
2.537
554
0.000
0.000
0.000
0.000
0.000
0.064
0.256
1.167
1.627
2.560
555
0.000
0.000
0.000
0.000
0.000
E 0.068
0.262
1.180
1.644
2.583
556
0.000
0.000
0.000 1
0.000
0.000
0.072
0.268
1.194
1.661
2.607
557
0.000
0.000
0.000
0.000
0.000
0.076
0.274
1.207
1.678
2.630 y
558
0.000
0.000
0.000
0.000
0.000
0.080
0.280
1.221
1.695
2.654
559
0.000
0.000
0.000
0.000
0.000
0.085
0.286
1.235
1.712
2.677
560
0.000
0.000
0.000
0.000
0.000
0.089
0.292
1.249
1.729
2.701
561
0.000
0.000
0.000
0.000
0.000
0.093
0.298
1.263
1.747
2.725
562
0.000
0.000
0.000
0.000
0.000
0.097 1
0.305
1.277
1.764
2.749
563
0.000
0.000
0.000
0.000
0.000
0.102
0.311
1.291
1.782
2.773
564
0.000
0.000
0.000
0.000
0.000
0.106 1
0.317
1.305
1.800 1
2.797

Pre -Development Discharges
Post -Development Inflows
Time
1- ear
2- ear
10- ear
m
100- ear
1 ear
2-year
10 ear
25- ear
100 ear
min
cfs
cfs
cfs
cfs
cfs
cfs
cfs
cfs
cfs
565
0.000
0.000
0.000
0.000
0.000
0.111
0.324
1.320
1.817
2.821
566
0.000
0.000
0.000
0.000
0.000
0.115
0.330
1.334
1.835
2.845
567
0.000
0.000
0.000
0.000
0.000
0.120
0.337
1.348
1.853
2.870
568
0.000
0.000
0.000
0.000
0.000
0.124
0.343
1.363
1.871
2.894
569
0.000
0.000
0.000
0.000
0.000
0.129
0.350
1.377
1.889
2.919
570
0.000
0.000
0.000
0.000
0000
0.134
0.357
1.392
1.907
2.943
571
0.000
0.000
0.000
0.000
0.000
0.139
0.364
1.407
1.926
2.968
572
0.000
0.000
0.000
0.000
0.000
0.143
0.370
1.422
1.944
2.993
573
0.000
0.000
0.000
0.000
0.000
0.148
0.377
1.437
1.962
3.018
574
0.000
0.000
0.000
0.000
0.000
0.153
0.384
1.452
1.981
3.043
575
0.000
0.000
0.000
0.000
0.000
0.158
0.391
1.467
1.999
3.068
576
0.000
0.000
0.000
0.000
0.000
0.163
0.398
1.482
2.018
3.093
577
0.000
0.000
0.000
0.000
0.000
0.168
0.405
1.497
2.037
3.119
578
0.000
0.000
0.000
0.000
0.000
0.173
0.413
1.512
2.056
3.144
579
0.000
0.000
0.000
0.000
0.000
0.178
0.420
1.528
2.074
3.169
580
0.000
0.000
0.000
0.000
0.000
0.183
0.427
1.543
2.093
3.195
581
0.000
0.000
0.000
0.000
0.000
0.188
0.434
1.559
2.112
3.221
582
0.000
0.000
0.000
0.000
0.000
0.194
0.442
1.574
2.132
3.246
583
0.000
0.000
0.000
0.000
0.000
0.199
0.449
1.590
2.151
3.272
584
0.000
0.000
0.000
0.000
0.000
0.204
0.457
1.605
2.170
3.298
585
0.000
0.000
0.000
0.000
0.000
0.210
0.464
1.621
2.190
3.324
586 1
0.000
0.000
0.000
0.000
0.000
0.215
0.472
1.637
2.209
3.350
587
0.000
0.000
0.000
0.000
0.000
0.220
0.479
1.653
2.228
3.376
588
0.000
0.000
0.000
0.000
0.000
0.226
0.487
1.669
2.248
3.402
589
0.000
0.000
0.000
0.000
0.000
0.231
0.495
1.685
2.268
3.429
590
0.000
0.000
0.000
0.000
0.000
0.237
0.503
1.701
2.288
3.455
591
0.000
0.000
0.000
0.000
0.000
0.243
0.510
1.718
2.307
3.482
592
0.000
0.000
0.000
0.000
0.000
0.248
0.518
1.734
2.327
3.508
593
0.000
0.000
0.000
0.000
0.000
0.000
0.254
0.52f)
1.750
2.347
3.535
594
0.000
0.000
0.000
0.000
0.260
0.534
1.767
2.367
3.561
595
0.000
0.000
0.000
0.000
0.000
0.266
0.542
1.783
2.387
3.588
596
0.000
0.000
0.000
0.000
0.000
0.271
0.550
1.800
2.408
3.615
597
0.000
0.000
0.000
0.000
0.000
0.277
0.558
1.816
2.428
3.642
598
0.000
0.000
0.000
0.000
0.000
0.283
0.567
1.833
2.448
3.669
599
0.000
0.000
0.000
0.000
1 0.000
0.289
0.575
1.850
2.469
3.696
600
0.000
0.000
0.000
0.000 1
0.000
0.295
0.583
1.867
2.489
3.723
601
0.000
0.000
0.000
0.000
0.000
0.301
0.592
1.884
2.510
3.751
602
0.000
0.000
0.000
0.000
0.000
0.308
0.600
1.901
2.531
3.778
603
0.000
0.000
0.000
0.000
0.000
0.314
0.609
1.919
2.552
3.807
604
0.000
0.000
0.000
0.000
0.000
0.320
0.617
1.937
2.574
3.836
605
0.000
0.000
0.000
0.000
0.000
0.327
0.627
1.956
2.597
3.867
606
0.000
0.000
0.000
0.000
0.000
0.333
0.636
1.975
2.621
3.899
607
0.000 1
0.000
0.000
0.000
0.000
0.340
0.646
1.996
2.647
3.933
608
0.000
0.000
0.000
0.000
0.000
0.347
0.656
2.017
2.673
3.969
609
0.000
0.000
0.000
0.000
0.000
0.355
0.666
2.040
2.701
4.007
610
0.000
0.000
0.000
0.000
0.000 1
0.362
0.677
2.063
2.730
4.046
611
0.000
0.000
0.000
0.000
0.000
0.370
0.688
2.087
2.759
4.086
612
0.000
0.000
0.000
0.000
0.000
0.378
0.699
2.112
2.790
4.128
613
0.000
0.000
0.000
0.000
0.000
0.386
0.711
2.137
2.822
4.171
614
0.000
0.000
0.000
0.000
0.000
0.394
0.723
2.163
2.854
4.215
615
0.000
0.000
0.000
0.000
0.000
0.403
0.735
2.190
2.887
4.260
616
0.000
0.000
0.000
0.000
0.000 1
0.411
0.748
2.217
2.920
4.305
617
0.000 1
0.000
0.000
0.000
0.000
0.420
0.760
2.244
2.954
4.351
618
0.000
0.000
0.000
0.000
0.000
0.429
0.773
2.272
2.988
4.398
619
0.000
0.000
0.000
0.000
0.000
0.438
0.786
2.300
3.023
4.445
620
0.000 1
0.000
0.000
0.000 1
0.000
0.447
0.799 I
2.328
3.058
621
0.000 1
0.000
0.000
0.000
0.000
0.456
0.812
2.356
3.092
4.539
622
0.000
0.000
0.000
0.000
0.000
0.466
0.825
2.384
3.127
4.587
623
0.000
0.000
0.000
0.000
0.000
0.475
0.838
2.413
3.163
4.634
624
0.000
0.000
0.000
0.000
0.000
0.485
0.852
2.442
3.198
4.682
625
0.000
0.000
0.000
0.000
0.000 1
0.494
0.865
2.471
3.234
4.730
626
0.000
0.000
0.000
0.000
0.000 1
0.504
0.879
2.500
3.270
4.779
627
0.000
0.000
0.000
0.000
0.000
0.514
0.893
2.529
3.306
4.827
628
0.000
0.000
0.000
0.000
0.000
0.524
0.907
2.559
3.342
4.876

629
630
631
632
633
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
662
663
664
665
666
667
668
669
670
671
672
673
674
677
678
681
682
683
684
685
686
687
692
Pre -Development Discharges
Post-Develo ment Inflows
] 1- ear
2-year
10- ear
I 25- ear
1 00-ear
1- ear
I 2-year
10- ear
25- ear
1 00-ear
] cfs]
[cfs]
[cfs
cfs
cfsl
I [cfsl
I fcfslcfs
cfs
cfs
0.000
0.000
0.000
0.000
0.000
0.534
0.921
2.588
3.378
4.925
0.000
0.000
0.000
0.000
0.000
0.544
0.935
2.618
3.415
4.974
0.000
0.000
0.000
0.000
0.000
0.554
0.950
2.648
3.452
5.024
0.000
0.000
0.000
0.000
0.000
0.565
0.964
2.679
3.489
5.073
0.000
0.000
0.000
0.000
0.000
0.575
0.979
2.709
3.526
5.123
0.000
0.000
0.000
1 0.000
0.000
0.586
1 0.994
2.739
3.563
5.173
0.000
0.000
0.000
0.000
0.000
0.597
1.009
2.770
3.601
5.223
0.000
0.000
0.000
0.000
0.000
0.607
1.024
2.801
3.639
5.274
0.000
0.000
0.000
0.000
0.000
0.618
1.039
2.832
3.677
5.324
0.000
0.000
0.000
0.000
0.000
0.629
1.054
2.864
3.715
5.375
0.000
0.000
0.000
0.000
0.000
0.641
1.070
2.895
3.753
5.426
0.000
0.000
0.000
0.000
0.000
0.652
1.085
2.927
3.792
5,477
0.000
0.000
0.000
0,000
0.000
0.663
1.101
2.958
3.830
5.529
0.000
0.000
0.000
0.000
0.000
0.675
1.117
2.990
3.869
5.580
0.000
0.000
0.000
0.000
0.000
0.686
1.133
3.022
3.908
5.632
0.000
0.000
0.000
0.000
0.001
0.698
1.149
3,055
3.947
5.684
0.000
0.000
0.000
0.000
0.004
0.710
1.165
3.087
3.987
5.736
0.000
0.000
0.000
0.000
0.008
0.722
1.181
3,120
4.026
5.788
0.000
0,000
0.000
0.000
0.015
0.734
1.198
3.153
1 4.066
5.841
0.000
0.000
0.000
0.000
0.024
0.746
1.214
3.186
4.106
5.894
0.000
0.000
0.000
0.000
0.036
0.758
1.231
3.219
4.146
5.947
0.000
0.000
0.000
0.000
0.049
0.771
1.248
3.252
4.187
6.000
0.000
0.000
0.000
0.000
0.065
0.783
1.265
3.286
4.227
6.053
0.000
0.000
0.000
0.000
0.081
0.796
1.282
3.319
4.268
6,106
0.000
0.000
0.000
0.000
0.099
0.808
1.299
3.353
4.308
6.160
0.000
0.000
0.000
0.000
0.118
0.821
1.316
3.387
4.349
6.214
0.000
0.000
0.000
0.000
0.137
0.834
1.334
3.421
4.390
6.268
0.000
0.000
0.000
0.000
0.156
0.847
1.351
3.455
4.432
6.322
0.000
0.000
0.000
0.000
0.176
0.860
1.369
1 3.490
4.473
6.376
0.000
0.000
0.000
0.000
0.195
0.874
1.387
3.524
4.515
6.431
0.000
0.000
0.000
1 0.000
0.215
0.887
1.405
3.559
4.557
6.485
0.000
0.000
0.000
1 0.000
0.236
0.900
1.423
3.594
4.599
6.540
0.000
0.000
0.000
0.000
0.256
0.914
1.441
3.629
4.641
1 6.596
0.000
0.000
0.000
0.000
0.278
0.928
1,460
3.667
4.686
1 6.654
0.000
0.000
0.000
0.000
0.300
0.943
1.480
3.706
4.734
6.717
0.000
0.000
0.000
0.000
0.323
0.959
1.502
3.749
4.785
6.785
0.000
0.000
0.000
0.000
0.347
0.976
1.525
3.796
4.843
6.862
0.000
0.000
0.000
0.000
0.373
0.995
1.551
3.849
4.907
6.947
0.000
0.000
0.000
0.000
0.400
1.015
1.579
3.907
4.979
7.044
0.000
0.000
0.000
0.000
0.429
1.037
1.611
3.973
5.059
7.152
0.000
0.000
0.000
0.000
0.460
1.061
1.644
4.044
5.147
7.271
0.000
0.000
0.000
0.000
0.492
1.087
1.681
4.121
5.242
7.399
0.000
0.000
0.000
0.000
0.525
1.114
1.719
4.203
5.343
7.536
0.000
0.000
0.000
0.000
0.560
1.143
1.760
4.290
5.450
7,682
0.000
0.000
0.000
0.000
0.596
1.173
1.802
4.381
5.562
7.834
0.000
0.000
0.000
0,000
0.634
1.204
1.847
4.476
5.679
7.992
0.000
0.000
0.000
0.000
0.673
1.237
1.893
4.574
5.800
8.156
0.000
0.000
0.000 1
0.000
0.713
1.270
1.940
4.674
5.924
8.324
0.000
0.000
0.000
0.000
0.755
1.305
1.989
4.777
6.050
8.495
0.000
0.000
0.000
0.000
0.798
1.340
2.038
4.881
6.179
8.669
0.000
0.000
0.000
0.000
0.842
1.376
2.088
4.987
6.309
8.844
0.000
0.000
0.000
0.000 1
0.8§8-Jl
1.412
2.139 1
5.093
6.439
9.020
u.uuu
u.uuu
u.uuu
u.uuu I
u.935
1 1.449 1
2.191 1
5.201
6.571 1
9.197
0.000
0.000
0.000
0.000
0.984
1.487 1
2.243
5.309
6.704
9.376
0.000
0.000
0.000
0.000
1.034
1.525 1
2.296
5.418
6.837
9.555
0.000
0.000
O.00u
0.000
1.086
1.564 1
2.350
5.528
6.972
9.735
0.000
0.000
0.000
0.002
1.139
1.603
2.404
5.639
7.108
9.917
0.000
0.000
0.000
0.007
1.193
1.643
2.459
5.751
7.244
10.099
0.000
0.000
0.000
0.015
1.250
1.683
2.515
5.864
7.382
10.282
0.000
0.000
0.000
0.027
1.307
1.724
2.571
5.978
7.520
10.467
0.000
0.000
0.000
0.044
1.366
1.766
2.628
6.092
7.659
10.652
0.000
0.000
0.000
0.066
1.427
1.809
2.686
6.208
7.800
10.838
0.000
0.000
0.000
0.092
1.492
1.853
2.747
6.330
7.948
11.036
0.000
0.000
0.000
0.124
1.569
1.904
2.817
6.471
8.120
11.265

Pre -Development Discharges
Post -Development Inflows
Time
min
IF1- ear
cfs
I 2-year
cfs
1 10- ear
cfs
I 25- ear
cfs
1 100- ear
cfsl
1- ear
[cfsl
2-year
lcfsl-cfs
10-ye ar
25- ear
rcfs
1 00-ear
cfs
693
0.000
0.000
0.000
1 0.162
1.663
1.965
2.901
1 6.644
8.331
11.547
694
0.000
0.000
0.000
0.207
1.784
2.040
3.005
1 6.860
8.596
11.903
695
0.000
0.000
0,00.263
1.940
2.132
3.135
7.132
8.930
12.355
696
0.000
0.000
EO.0040
0.331
2.134
2.247
3.296
7.473
9.351
12.924
697
0.000
0.000
0.412
2.367
2.389
3.496
7.897
9.873
13.633
698
0.000
0.000E
0.508
2.636
2.559
3.736
8.408
10.503
14.487
699
0.000
0.000
0.000
0.622
2.943
2.756
4.014
8.999
11,232
15.476
700
0.000
0.000
0.000
0.753
3.284
2.980
4.329
9.666
12.053
16.589
701
0.000
0.000
0.006
0.905
3.659
3.228
4.678
10.402
12.960
17.815
702
0.000
0.000
0.021
1.077
4.066
3.500
5.059
11.202
13.944
19.145
703
0.000
0.000
0.051
1.272
4.504
3.794
5.470
12.060
14.998
20.568
704
0.000
0.000
0.104
1.489
4.971
4.110
5.909
12.971
16.115
22.072
705
0.000
0.000
0.185
1.730
5.470
4.445
6.373
13.929
17.288
23,647
706
0.000
0.000
0,295
1.996
6.001
4.799
6.862
14.927
1 18.507
25.282
707
0.000
0.000
0.435
2.288
6.566
5.170
7.371
15.959
1 19.767
26.966
708
0.000
0.000
0.605
2.608
7.167
5.557
1 7.899
17.020
21.058
28,687
709
0.000
0.000
0.805
2.955
7.803
5.957
8.444
18.103
22,373
30.434
710
0.000
0.000
1.035
3.331
8.477
6.371
9.003
19.204
23.706
32.200
711
0.000
0.000
1.294
3.737
9.188
6.798
9.577
20.324
25.059
33.987
712
0.000
0.000
1.580
4.173
9.939
7.239
10.167
21.463
26.433
35.794
713
0.000
0.000
1.892
4.640
10.729
7.693
10.773
22.621
27.825
37.621
714
0.000
0.000
2.231
5.139
11.559
8.163
11.395
23.799
29.238
39.468
715
0.000
0.000
2.615
5.702
12.492
8.669
12.063
25.057
30.745
41.434
716
0.000
0.000
3.084
6.399
13.660
9.257
12.839
26.514
32.489
43.710
717
0.000
0.000
3.692
7.311
15.211
9.975
13.787
28.294
34.622
46.494
718
0.000
0.000
4.501
8.538
17.310
10.875
14.975
30.527
37.297
49.987
719
0.000
0.000
5.589
10.192
20.145
12.012
16.474
33.345
40.673
54.395
720
0.000
0.000
7.022
12.352
23.822
13.445
18,362
36.885
44.913
59.929
721
0.000
0.000
8.769
14.944
28.168
15.176
20.638
41.140
50.005
66.570
722
0.000
0.028
10.706
17.758
32.793
17.115
23.180
45.865
55.650
73.920
723
0.000
0.101
12.667
20.538
37.243
19.131
25.810
1 50.711
61.431
81.425
724
0.000
0.228
14.451
22.981
41.011
21.081
28.341
55.321
66.912
88.516
725
0.000
0.412
15.816
24.741
43.534
22.818
30.576
59.322
71.651
94.611
726
0.000
0.648
16.606
25.611 1
44.509
24.183
32.308
62.336
75.193
99.122
727
0.000
0.891
16.820
25.622
44.031
25.039
33.361
64.042
77.159
101.556
728
0.000
1.115
16.537
24.910
42.366
25.365
33.710
64.408
77.515
101.879
729
0.000
1.309
15.874
23.666
39.863
25.228
33.450
63.631
76.501
100.413
730
0.002
1.469
14.975
22.113
36.907
24.707
32.687
61.921
74.372
97.495
731
0.010
1.604
14.006
20.500
33.917
23.884
31.531
59.493
71.388
93.469
732
0.025
1.717
13.087
19.000
31.184
22.849
30.101
56.569
67.817
88.687
733
0.050
1.803
12.288
17.716
28.871
21.692
28.517
53.377
63.930
83.501
734
0.086
1.860
11.644
16.689
27.033
20.477
26.861
50.073
59.914
78.159
735
0.132
1.902
11.143
15.891
25.609
19.237
25.181
46,748
55.882
72.808
736
0.184
1.936
10.761
15.281
24.518
18.010
23.524
43.497
51,946
67.597
737
0.240
1.965
10.465
14.807
23.667
16.832
21.942
40.414
48.221 1
62.676
738
0.296
1.989
10.218
14.411
22.955
15.746
20.487
37.599
44.824
58.197
739
0.350
2.005
9.973
14.025
22.272
14.794
19.216
35.153
41.876
54.316
740
0.401
2.008
9.710
13.618
21.563
13.986
18.140
33.093
39.396
51.057
741
0.445
2.001
9.428
13.189
20.827
13.299
17.228
31.354
37.305
48.313
742
0.481
1.983
9.128
12.740
20.067
12.709
16.446
29.867
35.518
45.970
743
0.510
1. 555
8.812
12.271
19.283
12.187
15.755
28.559
33.948
43.914
744
0.531
1.917
8.479
11.785
18.478
11.704
15.116
27,356
32.506
42.027
745
0.545
1.871
8.132
11.281
17.652
11.228
14.490
26.183
31,101
40.192
746
747
748 11
749
750
751
752
753
0.553
0.554
0.549 1
0.539
0.524
0.505
0.483
0.461
1.817
1.754
1.685 1
1.608 1
1.525
1.438
1.351
1.
7.771
7.397
7.0'i1
6.613
6.205
5.794
5.393
5.017
10.761
10.227
9.b/9
9.117
8.544
7.968
7.409
6.886
16.807
15.944
15.064
14.169
13.260
12.350
11.470
10.648
10.745
10.256
9.760 1
9.257
8.750
8.240
7.737
F 7.248
13.857
13.216
12.568
11.914
11.254
10.593
9.941
9.308
25.002
23.814
22.618
21.415
20.207
19,000
17.813
16.664
29.688
28.268 1
26.841
25.407
23.966
22.530
21.118
19.752
38.350
36.501
34.645
32.782
30.914
29.052
27.224
25.456
754
755
756
0.441 1
0.423
0.409 1
1.191
1.127
1.076
4.680
4.396
4.170
6.418
6.023
5.708
9.914
9.295
8.800
6.780
6.343
5.943
8.704
8.139
7.623
15.570
14.548
13.615 1
18.451
17.236
16.129
23.773
22.203
20.772

11 Pre -Development Discharges
I Post- Development Inflows
Time
1- ear
2-year
10- ear
25 ear
100- ear
1- ear
2-year
10 ear
25 ear
1 00-ear
min
cfs
cfs
cfs
cfs
[cfsl
I fcfslcfsj
[cfsj
I fcfsl
757
0.399
1.037
3.993
5.461
8.412
5.589
7.166
12.790
15.148
19.505
758
0.392
1.008
3.858
5.273
8.116
5.283
6.771
12.076
14.300
18.409
759
0.388
0.987
3.758
5.133
7.894
5.020
6.432
11.463
13.573
17.469
760
0.386
0.973
3.685
5.030
7.731
4.796
6.144
10.943
12.955
16.671
761
0.385
0.964
3.632
4.954
7.609
4.609
5.901
10.505
12.434
15.998
762
11 0.386
0.957
3.590
4.894
7.512
4.452
5.699
10.139
12.001
, 5.438
763
0.386
0.951
3.551
j 4.839
7.422
4.323
5.532
9.837
11.642
14.974
764
0.387
0.945
3.512
4.783
7.332
4.217
5.395
9.589
11.347
14.592
765
0.387
0.938
3.473
4.727
7.241
4.130
5.283
9.384
11.103
14.277
766
0.386
0.931
3.433
4.670
7.149
4.058
5.189
9.214
10.901
14.015
767
0.386
0.923
3.392
4.612
7.057
3.996
5.109
9.068
10.727
13.789
768
0.385
0.916
3.351
4.554
6.963
3.940
5.037
8.936
10.570
13.586
769
0.384
0.908
3.309
4.495
6.870
3.887
4.967
8.809
10.419
13.390
770
0.383
0.900
3.267
4.436
6.775
3.833
4.897
8.682
10.267
13.194
771
0.381
0.891
3.225
4.376
6.680
3.778
4.827
8.554
10.115
12.998
772
0.380
0.882
3.182
4.315
6.584
3.724
4.756
1 8.426
9.963
12.801
773
0.378
0.873
3.138
4.254
6.488
3.670
4.686
8.298
9.811
12.604
774
0.376
0.864
3.094
4.193
6.391
3.615
4.615
8.170
9.658
12.406
775
0.373
0.854
3.050
4.131
6.293
3.560
4.544
8.041
9.506
12.209
776
0.371
0.844
3.005
4.069
6.195
3.505
4.473
7.913
9.353
12.012
777
0.368
0.834
2.960
4.006
6.097
3.449
4.401
7.784
9.200
11.814
778
0.365
0.824
2.914
3.942
5.997
1 3.394
4.330
7.655
9.046
11.616
779
0.362
0.813
2.868
3.879
5.898
3.338
4.258
7.525
8.893
11.418
780
0.359
0.802
2.822
3.814
5.797
3282
4.186
7.396
8.739
11.219
781
0.355
0.791
2.775
3.751
5.698
3.227
4.114
7.267
8.586
11.022
782
0.352
0.780
2.731
3.689
5.601
3.172
4.044
7.140
8.436
10.828
783
0.348
0.770
2.689
3.631
5.511
3.118
3.975
7.017
8.289
10.639
784
0.346
0.762
2.651
3.578
5.429
3.067
3.909
6.898
8.149
10.458
785
0.343
0.754
2.618
3.532
5.357
3.019
3 847
6.786
8.016
10.287
786
0.342
0.748
2.590
3.494
5.298
2.974
3.789
6.683
7.893
10.128
787
0.341
0.743
2.568
3.463
5.248
2.933
3.737
6.588
7.781
9.984
788
0.340
0.740
2.550
3.437
5.206
2.897
3.690
6.504
7.681
9.854
789
0.340
0.737
2.534
3.415
5.172
2.864
3.648
6.428
1 7.591
9.738
790
0.341
0.735
2.522
3.397
5.142
2.835
3.611
6.361
7.511
9.635
791
0.341
0.734
2.511
3.382
5.117
2.810
3.577
6.301
7.440
9.543
792
0.341
0.732
2.501
3.367
5.094
2.787
3.548
6.247
7.376
9.460
793
0.342
0.731
2.492
3.354
5.071
2.766
3.521
6.199
7.319
9.386
794
0.342
0.730
2.482
3.340
5.048
2.748
3.498
1 6.155
7.267
9.319
795
0.343
0.729
2.473
3.326
5.025
2.731
3.476
6.116
7.220
9.257
796
0.343
0.727
2.463
3.312
5.002
2.716
3.456
6.079
7.176
9.201
797
0.343
0.726
2.453
3.297
4.979
2.702
3.437
6.044
7.135
9.147
798
0.344
0.724
2.443 1
3.283
4.956
2.688
3.419
6.011
7.095
9.096
799
0.344
0.723
2.433
3.269
4.932
2.674
3.401
5.978
7.056
9.045
800
0.344
0.721
2.423
3.254
4.909
2.660
3.383 1
5.945
7.016
8.994
801
0.344
0.720
2.413
3.240
4.885
2.646
3.365
5.912
6.977
8.943
802
0.344
0.718
2.403
3.225
4.861
2.632
3.347
5.879
6.938
8.892
803
0.344
0.716
2.392
3.210
4.837
2.618
3.329
5.846
6.898
8.840
804
0.344
0.715
2.382.
3.195
4.813 1
2.604
3.311
5.813
6.859
8.789
805
0.344
0.713
2.371
3.180
4.789
2.590
3.293
5.779
6.819
8.738
806
0.344
0.711
2.361
3.165
4.765
2.576
3.274
5.746
6.780
8.687
807
0.344
0.709
2.350
3.150
4.741
2.562
3.256
5.713
6.740
8.636
808
0.344
0.707
2.339
3.135
4.717
2.548
3.238
5.680
6.700
8.584
809
0.344
0.705
2.329
3.120
4.692
2.534
3.219
5.646 1
6.661
8.533
810
0.343
0.703
0.701
2.318
2.307
3.104
3.089 1
4.667
4.643
2.520 1
2.506 1
3.201
3.183
5.613
5.580
6.621
6.581
8.482
8.430
811
0.343
8-i 2
0.343
0.699 1
2.296
3.073
4.618
2.492
3.164
5.546
6.542
8.379
813
0.342
0.697
2.284
3.057
4.593
2.477
3.146
5.513
6.502
____
8.327
814
0.342
0.694
2.273
3.042
4.568
2.463
3.127
5.479
6.462
8.276
815
0.342
0.692
2.262
3.026
4.543
2.449
3.109
5.446
6.422
8.224
816
0.341
0.690
2.251
3.010
4.518
2.434
3.090
5.412
6.382
8.173
817
0.341
0.687
2.239 1
2.994 1
4.492
2.420
3.072
5.378
6.342
8.121
818
0.340
0.685
2.228
2.978
4.467
2.406
3.053
5.345
6.302
8.070
819
PO..:3�40�:::0.682
2.216
2.962
4.442
2.391
3.035
5.311
6.262
8.018
820
339
0.680
2.205
2.945
4.416
2.377
3.016
5.277
6.222
7.966

Pre -Development Discharges
I Post -Development Inflows
Time
1- ear
2-year
10- ear
25- ear
100- ear
1- ear
2-year
1 10- ear
25- ear
100- ear
min]
[cfs]
[cfs]
[cfs]
[cfs
cfsil
[Cfsl
I rcfslcfs
cfs
cfs
821
0.338
0.677
2.193
2.929
4.390
2.362
2.997
5.244
6.182
7.915
822
0.338
0.675
2.181
2.913
4.365
2.348
2.979
5.210
6.142
7.863
823
0.337
0.672
2.169
2.896
4.339
2.333
2.960
5.176
6.102
7.811
824
0.336
0.669
2.157
2.880
4.313
2.319
2.941
5.142
6.062
7.759
825
0.335
0.667
2.145
2.863
4.287
2.304
2.922
5.109
6.022
7.708
826
0.335
0.664
2.133
2.846
4.261
2.289
2.903
5.075
5.982
7 656
827
0.334
0.661
2.121
2.830
4.234
2.275
2.885
5.041
5.942
7.604
828
0.333
0.658
2.109
2.813
4.208
2.260
2.866
5.007
5.901
7.552
829
0.332
0.655
2.097
2.796
4.182
2.245
2.847
4.973
5.861
7.500
830
0.331
0.652
2.085
2.779
4.155
2.231
2.828
4.939
5.821
7.448
831
0.330
0.649
2.072
2.762
4.129
2.216
2.809
4.905
5.781
7.396
832
0.329
0.646
2.060
2.745
4.102
2.201
2.790
4.871
5.740
7.344
833
0.328
0.643
2.047
2.727
4.075
2.186
2.771
4.837
5.700
7.292
834
0.327
0.640
2.035
2.710
4.049
2.171
2.752
4.803
5.660
7.240
835
0.326
0.637
2.022
2.693
4.022
2.157
2.733
4.769
5.619
7.188
836
0.325
0.634
2.009
2.675
3.995
2.142
2.714
4.735
5.579
7.136
837
0.324
0.631
1.997
1 2.658
3.968
2.127
2.694
4.700
5.538
7.084
838
0.322
0.627
1.984
2.640
1 3.941
2.112
2.675
4.666
5.498
7.032
839
0.321
0.624
1.971
2.623
3.913
2.097
2.656
4.632
5.457
6.980
840
0.320
0.621
1.958
2.605
3.886
2.082
2.637
4.598
5.417
6.928
841
0.319
0.618
1.945
2.588
3.859
2.067
2.618
4.564
5.376
6.876
842
0.317
0.614
1.933
2.570
3.833
2.052
2.599
4.530
5.336
6.824
843
0.316
0.611
1.921
2.554
3.807
2.038
2.580
4.497
5.297
6.774
844
0.315
0.608
1.910
2.539
3.784
2.024
2.562
4.465
5.259
6.725
845
0.314
0.606
1.900
2.525
3.762
2.010
2.545
4.434
5.223
6.678
846
0.314
0.604
1.891
2.512
3.743
1.997
2.528
4.405
5.188
6.633
847
0.313
0.602
1.883
2.501
3.726
1.985
2.513
4.377
5.155
6.591
848
0.313
0.600
1.875
2.491
3.710
1.974
2.499
4.351
5.125
6.552
849
0.312
0.599
1.869
1 2.482
3.695
1.963
2.485
4.327
5.096
6.515
850
0.312
0.598
1.863
2.474
3.682
1.954
2.472
4.304
5.069
6.481
851
0.312
0.596
1.857
2.466
3.669
1.944
2.461
4.283
5.044
6.448
852
0.312
0.595
1.852
2.458
3.657
1.936
2.449
4.263
5.020
6.417
853
0.311
0.594
1.846
2.450
3.645
1.928
2.439
4.244
4.998
6.388
854
0.311
0.593
1.841
2.443
3.633
1.920
2.429
4.226
4.976
6.361
855
0.311
0.592
1.835
2.435
3.621
1.912
2.419
4.209
4.956
6.334
856
0.311
0.591
1.830
2.427
3.609
1.905
2.410
4.192
4.936
6.308
857
0.310
0.590
1.824
2.420
3.596
1.898
2.401
4.175
4.916
6.283
858
0.310
0.588
1.819
2.412
3.584
1.891
2.392
4.159
4.897
6.258
859
0.310
0.587
1.813
2.404
3.572
1.884
2.383
4.143
4.878
6.233
860
0.310
0.586
1.807
2.396
3.560
1.877
2.374
4.127
4.858
6.208
861
0.309
0.585
1.802
2.388
3.547 1
1.870
2.365
4.110
4.839
6.183
862
0.309
0.584
1.796
2.380
3.535 1
1.863
2.356
4.094
4.820
6.159
863
0.309
0.582
1.790
2.373
3.522
1.856
2.347
4.078
4.801
6.134
864
0.308
0.581
1.785
2.365
3.510
_
1.849
2.338
4.062
4.781
6.109
865
0.308
0.580
1.779
2.357
3.497
1.842
2.329
4.045
4.762
6.084
866
0.308
0.578
1.773
2.349
3.485
1.835
2.319
4.029
4.743 1
6.059
867
0.307
0.577
1.767
2.341
3.472
1.828
2.310
4.013
4.723 1
6.034
868
0.307
0.576
1.762
2.333
3.460
1.821
2.301
3.997
4.704
6.009
869
0.306
0.574
1.756
2.324
3.447
1.814
2.292
3.980
4.685
5.985
870
0.306
0.573
1.750
2.316
3.435
1.807
2.283
3.964
4.666
5.960
871
0.306
0.572
1.744
2.308
3.422
1.800
2.274
3.948
4.646
5.935
872
0.305
0.570
1.738
2.300
3.409
1.793
2.265
3.931
4.627
5.910
873
0.305
0.569
1.732
2.292
3.396
1.786
2.256
3.915
4.608
5.885
874 _
0.304
0.567
1.726
2.284
3.384
1.778
2.247
3.899
4.588
5.860
875
0.304
0.566
1.720
2.275
3.371
1.771
2.238
3.882
4.569
5.835
876
0.303 1
0.565 1
1.714
2.267
3.358
1.764
2.228
3.866
4.549
5.810
877
0.303
0.563
1.708
2.259
3.345
1.757
2.219
3.850
4.530
5.785
878
0.302
0.562
1.702
2.251
3.332
1.750
2.210
3.833
4.511
5.760
879
0.302
0.560
1.696
2.242
3.319
1.743
2.201
3.817
4.491
5.735
880
0.301
0.559
1.690
2.234
3.306
1.736
2.192
3.801
4.472
5.710
881
0.301
0.557
1.684
2.225
3.293
1.728
2.183
3.784
4.452
5.685
882
0.300
0.555
1.678
2.217
3.280
1 1.721
2.173
3.768
4.433
5.660
883 14299
299
0.554
1.672
2.209
3.267
1.714
2.164
3.751
4.414
5.635
884
0.552 1
1.666
2.200 1
3.254 11
1.707 1
2.155 1
3.735
4.394 1
5.610

885
886
887
888
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
938
939
940
941
942
943
944
945
Pre -Development Discharges
I Post- Develop ment Inflows
11- ear
I 2-year
1 10- ear
I 25- ear
1 00-ear
1- ear
I 2-year
1 10 ear
25- ear
1 1 00-ear
1 lcfsl
I lcfslcfs
cfs]
I [cfs]
I [cfs
cfsl
I lcfsl
rcfsicfs
0.298
1 0.551
1.659
2.192
3.241
1.700
2.146
3.719
4.375
1 5.585
0.298
0.549
1.653
2.183
3.228
1.692
2.136
3.702
4.355
5.560
0.297
0.548
1.647
2.175
3.215
1.685
2.127
3.686
4.336
5.535
0.296
0.546
1.641
2.166
3.202
1.678
2.118
3.669
4.316
5.510
0.296
0.544
1.634
2.157
3.189
1.671
2.109
3.653
4.297
5.485
0.295
0.543
1.628
2.149
3.175
1.664
2.099
3.636
4.277
5.460
0.294
0.541
1.622
2.140
3.162
1.656
2.090
3.620
4.258
5.435
0.294
0.539
1.615
2.132
3.149
1.649
2.081
3.603
4.238
5.410
0.293
0.538
1.609
2.123
3.135
1.642
2.072
3.587
4.219
5.385
0.292
0.536
1.603
2.114
3.122
1.634
2.062
3.570
4.199
5.360
0.292
0.534
1.596
2.105
3.109
1.627
2.053
3.554
4.180
5.335
0.291
0.532
1.590
2.097
3.095
1.620
2.044
1 3.537
4.160
5.309
0.290
0.531
1.583
2.088
3.082
1.613
2.034
1 3.521
4.141
5.284
0.290
0.529
1.577
2.079
3.068
1.605
2.025
3.504
4.121
5.259
0.289
0.527
1.570
2.070
3.055
1.598
2.016
3.488
4.102
5.234
0.288
0.525
1.564
1 2.062
3.041
1.591
2.006
3.471
4.082
5.209
0.287
0.523
1.557
2.053
3.028
1.583
1.997
3.454
4.062
5.184
0.286
0.522
1.551
2.044
3.014
1.576
1.988
3.438
4.043
5.159
0.286
0.520
1.544
2.035
3.001
1.569
1.978
3.421
4.023
5.134
0.285
0.518
1.538
2.026
2.987
1.561
1.969
3.405
4.004
5.108
0.284
0.516
1.531
2.017
2.974
1.554
1.959
3.388
3.984
5.083
0.283
0.514
1.524
2.008
2.960
1.547
1.950
3.372
3.964
5.058
0.282
0.512
1.518
1.999
2.946
1.539
1.941
1 3.355
3.945
5.033
0.282
0.511
1.511
1.990
2.932
1.532
1.931
1 3.338
3.925
5.008
0.281
0.509
1.504
1.981
2.919
1.524
1.922
3.322
3.905
4.982
0.280
0.507
1.498
1.972
2.905
1.517
1.912
3.305
3.886
4.957
0.279
0.505
1.491
1.963
2.891
1.510
1.903
3.288
3.866
4.932
0.278
0.503
1.484
1.954
2.877
1.502
1.893
3.272
3.847
4.907
0.277
0.501
1.478
1.945
2.864
1.495
1.884
3.255
3.827
4.882
0.276
0.499
1.471
1.935
2.850
1.487
1.875
3.238
3.807
4.856
0.275
0.497
1.464
1.926
2.836
1.480
1.865
3.222
3.788
4.831
0.275
0.495
1.457
1 1.917
2.822
1.472
1.856
3.205
3.768
4.806
0.274
0.493
1.450
1 1.908
2.808
1.465
1.846
3.188
3.748
4.781
0.273
0.491
1.443
1.899
2.794
1.458
1.837
3.172
3.728
4.755
0.272
0.489
1.437
1.889
2.780
1.450
1.827
1 3.155
3.709
4.730
0.271
0.487
1.430
1.880
2.766
1.443
1.818
3.138
3.689
4.705
0.270
0.485
1.423
1.871
2.752
1.435
1.808
3.1 22
3.669
4.680
0.269
0.483
1.416
1.862
2.738
1.428
1.799
3.105
3.650
4.654
0.268
0.481
1.409 1
1.852
2.724
1.420
1.789
3.088
3.630
4.629
0.267
0.479
1.402
1.843
2.710
1.413
1.780
3.071
3.610
4.604
0.266
0.477
1.395
1.834
2.696
1.405
1.770
3.055
3.590
4.578
0.265
0.475
1.388
1.824
2.682
1.398
1.760
3.038
3.571
4.553
0.264
0.472
1.381
1.815
2.668
1.390
1.751
3.021
3.551
4.528
0.263
0.470
1.374
1.805
2.654
1.383
1.741
3.005
3.531
4.503
0.262
0.468
1.367
1.796
2.639
1.375
1.732
2.988
3.511
4.477
0.261
0.466
1.360
1.787
2.625
1.368
1.722
2.971
3.492
4.452
0.260
0.464
1.353
1.777
2.611
1.360
1.713
2.954
3.472
4.427
0.259
0.462
1.346
1.768
2.597 1
1.352
1.703
2.937
3.452
4.401
0.258
0.460
1.339
1.758
2.582
1.345
1.694
2.921
3.432
4.376
0.256
0.457
1.332
1.749
2.568
1.337
1.684 1
2.904
3.412
4.351
0.255
0.455
1.324
1.739
2.554
1.330
1.674
2.887
3.393
4.325
0.254
0.453
1.317
1.730
2.540
1.322
1.665
2.870 1
3.373
4.300
0.253
0.451
1.310
1.720
2.525
1.315
1.655
2.853 1
3.353 1
4.275
0.251
�.-
0.446
I.JJJI
1.296
I.f iu
1.701
1-1.011
2.496
i.ouf 1
1.300
I.D40
1.636
L.O:i/
2.820
3.333 1
3.313
4.249
4.224
0.250
0.444
1.289
1.691 1
2.482
1.292
1.626
2.803
3.294
4.198
0.249
0.442
1.281
1.682
2.468
1.284
1.617
2.786
3.274
4.173
0.248
0.440
1.274
1.672
2.453
1.277
1.607
2.769
3.254
4.148
0.246
0.437
1-.267
1.662
2.439
1.269
1.597
2.753
3.234
4.122
0.245
0.435
1.260
1.653
2.424
1.262
1.588
2.736
3.214
4.097
0.244
0.433
1.252
1.643
2.410
1.254
1.578
2.719
3.194
4.072
0.243
0.430
1.245
1.633
2.395
1.246
1.568
2.702 1
3.1 ZLJ
4.046
0.242
0.428
1.238
1.623
2.381
1.239
1.559
2.685 1
3.155 1
4.021
0.241
0.426
1.230
1.614
2.366 1
1.231
1.549
2.668 1
3.13.9 1
3.995

Pre -Development Discharges
Post -Development Inflows
Time
1-year
2-year
10 ear
25- ear
100- ear
1- ear
2-year
10-year
25- ear
1 00-ear
mincfs
cfsl
I [cfsl
IcfsI
rcfslcfs)
I [cfs]
[cfs]
[cfs
949
0.239
0.424
1.223
1.604
2.352
1.223
1.539
2.651
3.115
3.970
950
0.238
0.421
1.216
1.594
2.337
1.216
1.530
2.634
3.095
3.944
951
0.237
0.419
1.208
1.584
2.322
1.208
1.520
2.618
3.075
3.919
952
0.236
0.417
1.201
1.574
2.308
1.200
1.510
2.601
3.055
3.894
953
0.234
0.414
1.194
1.565
2.293
1.193
1.501
2.584
3.035
3.868
954
0.233
0.412
1 186
1.555
2.278
1.185
1 1.491
2.567
3.015
3.843
955
0.232
0.409
1.179
1.545
2.264
1.177
1.481
2.550
2.996
3.817
956
0.231
0.407
1.171
1.535
2.249
1.170
1.471
2.533
2.976
3.792
957
0.230
0.405
1.164
1.525
2.234
1.162
1.462
2.516
2.956
3.766
958
0.228
0.402
1.156
1.515
2.220
1.154
1.452
2.499
2.936
3.741
959
0.227
0.400
1.149
1.505
2.205
1.147
1.442
2.482
2.916
3.715
960
0.226
0.397
1.141
1.495
2.190
1.139
1.433
2.465
2.896
3.690
961
0.224
0.395
1.134
1.486
2.175
1.131
1.423
2.449
2.876
3.665
962
0.223
0.393
1.127
1.476
2.161
1.124
1.413
2.432
2.857
3.640
963
0.222
0.390
1.120
1.467
2.148
1.116
1.404
2.416
2.837
3.615
964
0.221
0.388
1.113
1.458
2.135
1.109
1.395
2.400
2.819
3.591
965
0.220
0.387
1.108
1.451
2.124
1.102
1.386
2,385
2.801
3.569
966
0.219
0.385
1.103
1.444
2.113
1.096
1.378
2.370
2.784
3.547
967
0.218
0.383
1.098
1.438
2.104
1.090
1.370
2.357
2.768
3.527
968
0.218
0.382
1.094
1.432
2.096
1.084
1.363
2.345
2.754
3.508
969
0.217
0.381
1.090
1.427
2.089
1.079
1.357
2.333
2.740
3.491
970
0.217
0.380
1.087
1.423
2.082
1.074
1.350
2.322
2.728
3.475
971
0.216
0.379
1.084
1.418
2.075
1.069
1.345
2.312
2.716
3.460
972
0.216
0.378
1.080
1.414
2.069
1.065
1.339
2.303
2.705
3.446
973
0.215
0.377
1.077
1.410
2.063
1.061
1.334
2.294
2.694
3.432
974
0.215
0.376
1.074
1.406
2.057
1.058
1.330
1 2.286
2.685
3.420
975
0.215
0.375
1.071
1.402
2.051
1.054
1.325
2.278
2.675
1 3.408
976
0.214
0.375
1.068
1.398
2.045
1.051
1.321
2.270
2.666
3.396
977
0.214
0.374
1.065
1.394
2.038
1.047
1.316
2.263
2.657
3.385
978
0.213
0.373
1.062
1.390
2.032
1.044
1.312
2.255
2.649
3.374
979
0.213
0.372
1.059
1.386
2.026
1.041
1.308
2.248
2.640
3.363
980
0.212
0.371
1.056
1.382
2.020
1.037
1.304
1 2.241
2.631
3.352
981
0.212
0.370
1.053
1.378
2.014
1.034
1.300
2.234
2.623
3.341
982
0.211
0.369
1.050
1.373
2.008
1.031
1.295
2.226
2.614
3.330
983
0.211
0.368
1.047
1.369
2.001
1.027
1.291
2.219
2.606
3.319
984
0.211
0.367
1.044
1.365
1.995
1.024
1.287
2.212
2.597
3.308
985
0.210
0.366
1.041
1.361
1.989
1.021
1.283
2.204
2.588
3.297
986
0.210
0.365
1.038
1.357
1.983
1.018
1.279
2.197
2.580
3.286
987
0.209
0.364
1.035
1.353
1.977
1.014
1.275
2.190
2.571
3.275
988
0.209
0.363
1.032
1.349
1.970
1.011
1.270
2.183
2.563
3.264
989
0.208
0.3 22
1.028
1.345
1.964
1.008
1.266
2.175
2.554
3.253
990
0.208
0.362
1.025
1.340
1.958
1.004
1.262
2.168
2.545
3.242
991
0.207
0.361
1.022
1.336
1.952
1.001 1
1.258
2.161
2.537
3.230
992
0.207
0.360
1.019
1.332
1.945
0.998
1.254
2.153
2.528
3.219
993
0.206
0.359
1.016
1.328
1.939
0.995
1.250
2.146
2.519
3.208
994
0.206
0.358
1.013
1.324
1.933
0.991
1.245
2.139
2.511
3.197
995
0.205
0.357
1.010
1.320
1.927
0.988
1.241
2.131
2.502
3.186
996
0.205
0.356
1.007
1.315
1.920
0.985
1.237
2.124
2.494
3.175
997
0.204
0.355
1.003
1.311
1.914
0.981
1.233
2.117
2.485
3.164
998
0.204
0.354
1.000
1.307
1.908
0.978
1.229
2.109
2.476
3.153
999
0.203
0.353
0.997
1.303
1.901
0.975
1.224
2.102
2.468
3.142
1000
0.203
0.352
0.994
1.299
1.895
0.971
1.220
2.095
2.459
3.131
1001
0.202
0.351
0.991
1.294
1.889
0.968
1.216
1 2.087
2.450
3.120
1002
0.202
0.350
0.988
1.290
1.883
0.965
1.212
2.080
2.442
3.109
1003
0.201
0.349
0.984
1.286
1.876
0.961
1.208
2.073
2.433
3.098
1004
1 0.201
0.348
0.981
1.282
1.870
0.958
1.203
2.065
2.425
3.087
1005
0.200
0.347
0.978
1.277
1.864
0.955
1.199
2.058
2.416
3.076
1006
0.200
0.346
0.975
1.273
1.857
0.951
1.195
2.051
2.407
3.065
1007
0.199
0.345
0.972
1.269
1.851
0.948
1.191
2.043
2.399
3.054
1008
0.199
0.344
0.969
1.265
1.845
0.945
1.187
2.036
2.390
3.043
1009
0.198
0.343
0.965
1.260 1
1.838
1 0.942
1.182
2.029
2.381
3.03211
010
0.198
0.342
0.962
1.256
1.832
0.938
1.178
2.021
2.373
3.021
011
E
0.197
0.341
0.959
1.252
1.826
0.935
1.174
2.014
2.364
3.010
012
0.197
0.340
0.956
1.248
1.819
0.932
1.170
2.007 1
2.355
2.998

Pre-Develo ment Discharges
Post -Development Inflows
Time
1- ear
2-year
10- ear
25- ear
100- ear
1- ear
2-year
10- ear
25- ear
1 00-ear
min
cfs
cfs]
I [cfs]
I [cfs
cfs
cfs]
I [cfs
cis
cfs]
I [cfs
1013
0.196
0.339
0.952
1.243
1.813
0.928
1.165
1.999
2.347
2.987
1014
0.196
0.338
0.949
1.239
1.806
0.925
1.161
1.992
2.338
2.976
1015
0.195
0.337
0.946
1.235
1.800
0.922
1.157
1.985
2.329
2.965
1016
0.195
0.336
0.943
1.230
1.794
0.918
1.153
1,977
2.321
2.954
1017
0.194
0.335
0.940
1.226
1.787
0.915
1.149
1.970
2.312
2.943
1018
0.193
0.334
0.936
1.222
1.781
0.911
1.144
1.962
2.303
2.932
1019
0.193
0.332
0.933
1.218
1.774
0.908
1.140
1.955
2.295
2.921
1020
0.192
0.331
0.930
1.213
1.768
0.905
1.136
1.948
2.286
2.910
1021
0.192
0.330
0.927
1.209
1.762
0.901
1.132
1.940
2.277
2.899
1022
0.191
0.329
0.923
1.205
1.755
0.898
1.127
1.933
2.269
2.888
1023
0.191
0.328
0.920
1.200
1.749
0.895
1.123
1.926
2.260
2.877
1024
0.190
0.327
0.917
1.196
1.742
0.891
1 1.119
1.918
2.251
2.866
1025
0.190
0.326
0.914
1.192
1.736
0.888
1.115
1.911
2243
2.855
1026
0.189
0.325
0.910
1.187
1.729
0.885
1.110
1.904
2.234
2.843
1027
0.188
0.324
0.907
1.183
1.723
0.881
1.106
1.896
2.225
2.832
1028
0.188
0.323
0.904
1.179
1.717
0.878
1.102
1.889
2.217
2.821
1029
0.187
0.322
0.900
1.174
1.710
0.875
1.098
1.881
2.208
2.810
1030
0.187
0.321
0.897
1.170
1.704
0.871
1.093
1.874
2.199
2.799
1031
0.186
0.320
0.894
1.166
1.697
0.868
1.089
1.867
2.191
2.788
1032
0.186
0.319
0.891
1.161
1.691
0.865
1.085
1.859
2.182
2.777
1033
0.185
0.318
0.887
1.157
1.684
0.861
1.081
1.852
2.173
2.766
1034
0.184
0.316
0.884
1.152
1.678
0.858
1.076
1.845
2.165
2.755
1035
0.184
0.315
0.881
1.148
1.671
0.854
1.072
1.837
2.156
2.744
1036
0.183
0.314
0.877
1.144
1.665
0.851
1.068
1.830
2.147
2.733
1037
0.183
0.313
0.874
1.139
1.658
0.848
1.064
1.822
2,138
2.721
1038
0.182
0.312
0.871
1.135
1.652
0.844
1.059
1.815
2.130
2.710
1039
0.181
0.311
0.867
1.130
1 1.645
0.841
1.055
1.808
2.121
2.699
1040
0.181
0.310
0.864
1.126
1.639
0.838
1.051
1.800
2.112
2.688
1041
0.180
0.309
0.861
1,122
1.632
0.834
1.047
1.793
2.104
2.677
1042
0.180
0.308
0.857
1.117
1.626
0.831
1.042
1.785
2.095
2.666
1043
0.179
0.307
0.854
1.113
1.619
0.827
1.038
1.778
2.086
2.655
1044
0.178
0.305
0.851
1.108
1.613
0.824
1,034
1.771
2.073
2.644
1045
0.178
0,304
0.847
1.104
1.606
0.821
1.030
1.763
2.069
2.633
1046
0.177
0.303
0.844
1.100
1.600
0.817
1.025
1.756
2.060
2.622
1047
0.177
0.302
0.841
1.095
1.593
0.814
1.021
1.748
2.051
2.610
1048
0.176
0.301
0.837
1.091
1.586
0.810
1,017
1.741
2.043
2.599
1049
0.175
0.300
0.834
1.086
1.580
0.807
1.012
1.734
2.034
2.588
1050
0.175
0.299
0.830
1.082
1.573
0.804
1.008
1.726
2.025
2.577
1051
0.174
0.298
0.827
1.077
1.567
0.800
1.004
1.719
2.017
2.566
1052
0.174
0.296
0.824
1.073
1.560
0.797
1.000
1.711
2.008
2.555
1053
0.173
0.295
0.820
1.068
1.554
0.793
0.995
1.704
1.999
2.544
1054
0.172
0.294
0.817
1.064
1.547
0.790
0.991
1.697
1.991
2.533
1055
0.172
0.293
0.813
1.059
1.540
0.787
0.987
1.689
1.982
2.522
1056
0.171
0.292
0.810
1.055
1.534
0.783
0.982
1.682
1.973
2.510
1057
0.170
0.291
0.807
1.051
1.527
0.780
0.978
1.674
1.964
2.499
1058
0.170
0.290
0.803
1.046
1.521
0.776
0.974
1.667
1.956
2.488
1059
0.169
0.288
0.800
1.042
1.514
0.773
0.970
1.660
1.947
2.477
1060
0.169
0.287
0.796
1.037
1.507
0.770
0.965
1.652
1.938
2.466
1061
0.168
0.286
0.793
1.033
1.501
0.766
0.961
1.645
1.930
2.455
1062
0.167
0.285
0.790
1.028
1.494 1
0.763
0.957
1.637
1.921
2.444
1063
0.167
0.284
0.786
1.024
1.487
0.759
0.952
1.630
1.912
2.433
1064
0.166
0.283
0.783
1.019
1.481
0.756
0.948
1.622
1.903
2.421
1065
0.165
0.282
0.779
1.015
1.474
0.753
0.944
1.615
1.895
2.410
1066
0.165 1
0.280
0.776
1.010
1.468
0.749
0.940
1.608
1.886
2.399
1067
0.164
0.279 1
0.773 1
1.006 1
1.461
1 0.746
0.935
1.600
1.877
2.388
1068 1
0.163
0.278
0.769
1.001 1
1.454
0.742
0.931
1.593
1.868
2.377
1069
0.163
0.277
0.766
0.997
1.448
0.739
.92
07_
_ 1.585
1.860
2.366
1070
0.162
0.276
0.762
0,992
1.441
0.736
0.922
1.578
1.851
2.355
1071
0.161
0.275
0.759
0.987
1.434
0.732
0.918
1.570
1.842
2.343
1072
0.161
0.273
0.755
0.983
1.428
0.729
0.914 1
1.563
1.834
2.332
1073 1
0.160
0.272
0.752
0.978
1.421
0.725
0.909
1.556
1.825 1
2.321
1074
0.159
0.271
0.748
0.974
1.414
0.722
0.905
1.548
1.816 1
2.310
1075
0.159
0.270
0.745
0.969
1.408
0.718
0.901
1.541
1.807 1
2.299
1076
0.158
0.269
0.741
0.965
1.401
0.715
0.896 1
1.533
1.799 1
2288

Time
Hi
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
Pre -Development Discharges
Post- Develo ment Inflows
1 1- ear
I 2-year
1 10- ear
I 25- ear
1 1 00-ear
11 1- ear
I 2-year
10 ear
25- ear
100 ear
cfs]
I rcfsi
I rcfsicfs
cfs
cfs
cfs
cfs
cfs
cfs
0.157
0.267
0.738
0.960
1.394
0.712
0.892
1.526
1.790
2.277
0.157
0.266
0.735
0.956
1.388
0.708
0.888
1.518
1.781
2.266
0.156
0.265
0.731
0.951
1.381
0.705
0.883
1.511
1.772
2.254
0.155
0.264
0.728
0.947
1.374
0.701
0.879
1.504
1.764
2.243
0.155
0.263
0.724
0.942
1.368
0.698
0.875
1.496
1.755
2.232
0.154
1 0.261
0.721
0.938
1.361
0.695
0.871
1.489
1.746
2.221
0.154
1 0.260
0.718
0.934
1.355
0.691
0.867
1.482
1.738
2.211
0.153
0.259
0.715
0.930
1.350
0.688
0.863
1.475
1.730
2.200
0.153
0.259
0.712
0.927
1.345
0.685
0.859
1.469
1.722
2.191
0.152
0.258
0.710
0.924
1.341
0.682
0.855
1.463
1.715
2.182
0.152
0.257
0.708
1 0.921
1.337
0.680
0.852
1.457
1.709
2.173
0.152
0.257
0.707
0.919
1.334
0.678
0.849
1.452
1.703
2.166
0.151
0.256
0.706
0.918
1.331
0.676
0.847
1.448
1.698
2.159
0.151
0.256
0.704
0.916
1.329
0.674
0.844
1.443
1.693
2.153
0.151
0.256
0.703
0.915
1.327
0.672
0.842
1.440
1.689
2.148
0.151
0.255
0.702
0.913
1 1.325
0.670
0.840
1.436
1.685
2.143
0.151
0.255
0.702
0.912
1.323
0.669
0.839
1.433
1.681
2.138
0.151
0.255
0.701
0.911
1.322
0.668
0.837
1.431
1.678
2.134
0.150
0.255
0.700
0.910
1.320
0,667
0.836
1.428
1.675
2.130
0.150
0.254
0.699
0.908
1.318
0.666
0.834
1.426
1.672
2.126
0.150
0.254
0.698
0.907
1.316
1 0.665
0.833
1 1.423
1.669
2.123
0.150
0.254
0.697
0.906
1.314
0.664
0.832
1.421
1.667
2.120
0.150
0.253
0.696
0.905
1.312
0.663
0.830
1.419
1.664
2.116
0.150
0.253
0.695
0.903
1.310
0.662
0.829
1.417
1.662
2.113
0.150
0.253
0.694
0.902
1.309
0.661
0.828
1.415
1.659
2.110
0.150
0.253
0.693
0.901
1.307
0.660
0.827
1.412
1.656
2.106
0.149
0.252
0.692
0.900
1.305
0.659
0.825
1.410
1.654
2.103
0.149
0.252
0.691
0.899
1.303
0.658
0.824
1.408
1.651
2.100
0.149
0.252
0.690
0.897
1.301
0.657
0.823
1.406
1.619
2.096
0.149
0.251
0.690
0.896
1.299
0.656
0.822
1.404
1,646
2.093
0.149
0.251
0.689
0.895
1.297
0.655
0.820
1.401
1.643
2.090
0.149
0.251
0.688
0.894
1.295
0.654
0.819
1.399
1.641
2.087
0.149
0.251
0.687
0.892
1.294
0.653
0.818
1.397
1.638
2.083
0.148
0.250
0.686
0.891
1.292
0.652
0.817
1.395
1.636
2.080
0.148
0.250
0.685
0.890
1.290
0.651
0,815
1 1.393
1.633
2.077
0.148
0.250
0.684
0.889
1.288
0.650
0.814
1.390
1.631
2.073
0.148
0.249
0.683
0.887
1.286
0.649
0.813
1.388
1.628
2.070
0.148
0.249
0.682
0.886
1.284
0.648
0.811
1.386
1.625
2.067
0.148
0.249
0.681
0.885
1.282
0.647
0.810
1.384
1.623
2.063
0.148
0.249
0.680
0.883
1.280
0.646
0.809
1.382
1.620
2.060
0.147
0.248
0.679
0.882
1.279
0.645
0.808 1
1.379
1.618
2.057
0.147
0.248
0.678
0.881
1.277
0.644
0.806
1.377
1.615
2.053
0.147
0.248
0.677
0.880
1.275
0.643
0.805
1.375
1.612
2.050
0.147
0.247
0.676
0.878
1.273
0.642
0.804
1.373
1.610 1
2.047
0.147
0.247
0.675
0.877
1.271
0.641
0.803
1.371
1.607
2.043
0.147
0.247
0.674
0.876
1.269
0.640
0.801
1.368
1.605
2.040
0.147
0.247
0.674
0.875
1.267
0.639
0.800
1.366
1.602
2.037
0.146
0.246
0.673
0.873
1.265
0.638
0.799
1.364
1.599
2.034
0.146
0.246
0.672
0.872
1.263
0.637
0.798
1.362
1,597
2.030
0.146
0.246
0.671
0.871
1.261
0.636
0.796
1.360
1,594
2.027
0.146
0.245
0.670
0.870
1.260
0.635
0.795
1.357 1
1.592 1
2.024
0.146
U.c-
0.245
v.Uuy I
0.668 1
U.OUo 1
0.867
1.400
1.256
UJO04
0.633
U. P4 1
0.793 1
I .Jbb
1.353
l .bdy
1.586
2.U2U
2.017
0.145
0.244
0.667
0.866
1.254
0.632
0.791 1
1.351
1.584
2.014
0.145
0.244
0.666
0.865
1.252
0.631
0.790 1
1.349
1.581
2.010
0.145
0.244
0.665
0.863
1.250
0.630
0.789
1.346
1.579
2.007
0.145
0.244
0.664
0.862
1.248
0.629
0.787
_
1.344
1.576
2.004
0.145
0.243
0.663
0.861
1.246
0.628
0.786
1.342
1.573
2.000
0.145
0.243
0.662
0.859
1.244
0.627
0.785
1.340
1.571
1.997
0.145
0.243
0.661
0.858
1.242
0.626
0.784
1.338
1.568
1.994
0.144
0.242
0.660
0.857
1.2
1 0.625
0.782
1.335
1.566
1.990
0.144
0.242 1
0.659 1
0.856
1.239
0.624
0.781
1.333 1
1.563
1987.
0.144
0.
0.658
0.854
1.237
0.623
0.780
1.331
1.561
1.984
0.144
0.241
0.657
0.853
1.235
0.622
0.779
1.329
1.558
1.980

Pre -Development Discharges
Post- Development Inflows
Time
Pfear
2-year
10- ear
25- ear
100- ear
1- ear
2-year
10 ear
25- ear
100- ear
min
cfs
cfs
cfs
cfs
cfs
cfs
cfs
cfs
cfs
cfs
1141
0.144
0.241
0.656
0.852
1.233
0.621
0.777
1.327
1.555
1.977
1142
0.144
0.241
0.655
0.850
1.231
0.620
0.776
1.324
1.553
1.974
1143
0.143
0.241
0.654
0.849
1.229
0.619
0.775
1.322
1.550
1.970
1144
0.143
0.240
0.653
0.848
1.227
0.618
0.774
1.320
1.548
1.967
1145
0.143
0.240
0.652
0.847
1.225
0.617
0.772
1.318
1.545
1.964
1146
0.143
0.240
1 0.652
0 845
1.223
0.616
0.771
1.316
1.542
1.960
1147
0.143
0.239
0.651
0.844
1.221
0.615
0.770
1.313
1.540
1.957
1148
0.143
0.239
0.650
0.843
1.220
0.614
0.768
1.311
1.537
1.954
1149
0.142
0.239
0.649
0.841
1.218
0.613
0.767
1.309
1.534
1.951
1150
0.142
0.238
0.648
0.840
1.216
0.612
0.766
1.307
1.532
1.947
1151
0.142
0.238
0.647
0.839
1.214
0.611
0.765
1.305
1.529
1.944
1152
0.142
0.238
0.646
0.838
1.212
0.610
0.763
1.302
1.527
1.941
1153
0.142
0.237
0.645
0.836
1.210
0.609
0.762
1.300
1.524
1.937
1154
0.142
0.237
0.644
0.835
1.208
0.608
0.761
1.298
1.522
1.934
1155
0.141
0.237
0.643
0.834
1.206
0.607
0.760
1.296
1.519
1.931
1156
0.141
0.236
0.642
0.832
1.204
0.606
0.758
1 1.293
1.516
1.927
1157
0.141
0.236
0.641
0.831
1.202
0.605
0.757
1.291
1.514
1.924
1158
0.141
0.236
0.640
0.830
1.200
0.604
0.756
1.289
1.511
1.921
1159
0.141
0.236
0.639
0.829
1.198
0.603
0.754
1.287
1.508
1.917
1160
0.141
0.235
0.638
0.827
1.196
0.602
0.753
1.285
1.506
1.914
1161
0.141
0.235
0.637
0.826
1.194
0.601
0.752
1.282
1.503
1.911
1162
0.140
0.235
0.636
0.825
1.193
0.600
0.751
1.280
1.501
1.907
1163
0.140
0.234
0.635
0.823
1.191
0.599
0.749
1.278
1.498
1.904
1164
0.140
0.234
0.634
0.822
1.189
0.598
0.748
1.276
1.495
1.901
1165
0.140
0.234
0.633
0.821
1.187
0.597
0.747
1.274
1.493
1.897
1166
0.140
0.233
0.632
0.819
1.185
0.596
0.746
1.271
1.490
1.894
1167
0.139
0.233
0.631
0.818
1.183
0.595
0.744
1.269
1.488
1.891
1168
0.139
0.233
0.630
0.817
1.181
0.594
0.743
1.267
1.485
1.887
1169
0.139
0.232
0.629
0.816
1.179
0.593
0.749
1.265
1.482
1.884
1170
0.139
0.232
0.628
0.814
1.177
0.592
0.740
1.262
1.480
1.881
1171
0.139
0.232
0.627
0.813
1.175
0.591
0.739
1.260
1.477
1.877
1172
0.139
0.231
0.626
0.812
1.173
0.590
0.738
1.258
1.475
1 1.874
1173
0.138
0.231
0.625
0.810
1.171
0.589
0.737
1.256
1.472
1.871
1174
0.138
0.231
0.624
0.809
1.169
0.588
0.735
1.254
1.469
1.867
1175
0.138
0.230
0.623
0.808
1.167
0.587
0.734
1.251
1.467
1.864
1176
0.138
0.230
0.622
0.806
1.165
0.586
0.733
1.249
1.464
1.861
1177
0.138
0.230
0.621
0.805
1.163
0.585
0.732
1.247
1.462
1.857
1178
0.138
0.229
0.620
0.804
1.162
0.584
0.730
1.245
1.459
1.854
1179
0.137
0.229
0.619
0.802
1.160
0.583
0.729
1.243
1.456
1.951
1180
0.137
0.229
0.618
0.801
1.158
0.582
0.728
1.240
1.454
1.847
1181
0.137
0.228
0.617
0.800
1.156
0.580
0.726
1.238
1.451
1.844
1182
0.137
0.228
0.616
0.798
1.154
0.579
0.725
1.236
1.449
1.841
1183
0.137
0.228
0.615
0.797
1.152
0.578
0.724
1.234
1.446
1.837
1184
0.137
0.227
0.614
0.796
1.150
0.577
0.723
1.231
1.443
1.834
1185
0.136
0.227
0.613
0.794
1.148
0.576
0.721
1.229
1.441
1.831
1186
0.136
0.227
0.612
0.793
1.146
0.575
0.720
1.227
1.438
1.827
1187
0.136
0.226
0.611 1
0.792
1.144
0.574
0.719
1.225
1.435 1
1,824
1188
0.136
0.226
0.610
0.790
1.142
0.573
0.717
1.223
1.433
1.821
1189
0.136
0.226
0.609
0.789
1.140
0.572
0.716
1.220
1.430
1.817
1190
0.135
0.225
0.608
0.788
1.138
0.571
0.715
1.218
1.428
1.814
1191
0.135
0.225
0.607
0.787
1.136
0.570
0.714
1.216
1.425
1.811
1192
0.135
0.225
0.606
0.785
1.134
0.569
0.712 1
1.214
1.422
1.807
1193
0.135
0.225
0.605
0.784
1.132
0.568
0.711
1.211
1.420 1
1.804
1194
0.135
0.224
0.604
0.783
1.130
0.567
0.710
1.209
1417
1.801
1195
0.135
0.224
0.603
0.781
1.128
0.566
0.708
1.207
1.415
1.797
1196
0.134
0.223 1
0.602 1
0.780
1.126
0.565
0.707
1.205
1.412
1197
0.134
0.223
0.601 1
0.779
1.124
0.564
0.706
1.203
1.409
_ _1.794
1.791
1198
0.134
0.223
0.600
0.777
1.122
0.563
0.705
1.200
1.407
1.787
1199
0.134
0.222
0.599
0.776
1.120
0.562
0.703
1.198
1.404
1.784
1200
0.134
0.222
0.598
0.775
1.118
0.561
0.702
1.196
1.402
1.781
1201.
0.133
0.222
0.597
0.773
1.116
0.560
0.701
1.194
1.399
1.777
1202
6.133
0.221
0.596
0.772
1.114
0.559
0.699
1.191
1.396
1.774
1203
0.133
0.221
0.595
0.771
1.112
0.558
0.698
1.189
1.394
1.771
1204
0.133
0.221
0.594
0.769
1.110
0.557
0.697
1.187
1.391
1.767

Pre -Development Discharges
Post -Development Inflows
Time
1- ear
I 2-year
10- ear
I 25- ear
1 100- ear
1- ear
I 2-year
I 10 ear
25- ear
100- ear
minI
icfsicfsi
[cfsi
I rcfsicfs
cfs
cfs
cfsi
I [cfsi
I frfzi
1205
0.133
0.220
0.593
0.768
1.108
0.556
0.696
1.185
1.388
1.764
1206
0.133
0.220
0.592
0.766
1.107
0.555
0.694
1.183
1.386
1.761
1207
0.132
0.220
0.591
0.765
1.105
0.554
0.693
1.180
1.383
1.757
1208
0.132
0.219
0.590
0.764
1.103
0.553
0.692
1.178
1.381
1.754
1209
0.132
0.219
0.589
0.762
1.101
0.552
0.690
1.176
1.378
1.751
1210
0.132
0.219
0.588
0.761
1 M9
0.551
1 0.689
1.174
1.375
1 1.747
1211
0.132
0.218
0.587
0.760
1.097
0.550
0.688
1.171
1.373
1.744
1212
0.131
0.218
0.586
0.758
1.095
0.549
0.687
1.169
1.370
1.741
1213
0.131
0.218
0.585
0.757
1.093
0.548
0.685
1.167
1.368
1.737
1214
0.131
0.217
0.584
0.756
1.091
0.547
0.684
1.165
1.365
1.734
1215
0.131
0.217
0.583
0.754
1.089
0.546
0.683
1.163
1.362
1.731
1216
0.131
0.217
0.582
0.753
1.087
1 0.545
1 0.681
1.160
1.360
1.727
1217
0.130
0216
0.581
0.752
1.085
0.544
0.680
1 1.158
1.357
1.724
1218
0.130
0.216
0.580
0.750
1.083
0.543
0.679
1.156
1.354
1.721
1219
0.130
0.216
0.579
0.749
1.081
0.542
0.678
1.154
1.352
1.717
1220
0.130
0.215
0.578
0.748
1.079
0.541
0.676
1.151
1.349
1.714
1221
0.130
0.215
0.577
0.746
1.077
0.540
0.675
1.149
1.347
1.711
1222
0.130
0.215
0.576
0.745
1.075
0.539
0.674
1.147
1.344
1.707
1223
0.129
0.214
0.575
0.744
1.073
0.538
0.672
1.145
1.341
1.704
1224
0.129
0.214
0.574
0.742
1.071
0.537
0.671
1.142
1.339
1.701
1225
0.129
0.214
0.573
0.741
1.069
0.536
0.670
1.140
1.336
1.697
1226
0.129
0.213
0.571
0.740
1.067
0.535
0.669
1.138
1.333
1.694
1227
0.129
0.213
0.570
0.738
1.065
0.534
0.667
1.136
1.331
1.691
1228
0.128
0.212
0.569
0.737
1.063
0.533
0.666
1.134
1.328
1.687
1229
0.128
0.212
0.568
0.735
1.061
0.532
0.665
1.131
1.326
1.684
1230
0.128
0.212
0.567
0.734
1.059
0.531
0.663
1.129
1.323
1.681
1231
0.128
0.211
0.566
0.733
1.057
0.529
0.662
1 1.127
1.320
1.677
1232
0.128
0.211
0.565
0.731
1.055
0.528
0.661
1.125
1.318
1.674
1233
0.127
0.211
0.564
0.730
1.053
0.527
0.659
1122
1.315
1.671
1234
0.127
0.210
0.563
0.729
1.051
0.526
0.658
1.120
1 1.312
1.667
1235
0.127
0.210
0.562
0.727
1.049
0.525
0.657
1.118
1.310
1.664
1236
0.127
0.210
0.561
0.726
1.047
0.524
0.656
1.116
1.307
1.660
1237
0.127
0.209
0.560
0.725
1.045
0.523
0.654
1.113
1.305
1.657
1238
0.126
0.209
0.559
0.723
1.043
0.522
0.653
1.111
1.302
1.654
1239
0.126
0.209
0.558
0.722
1.041
0.521
0.652
1.109
1.299
1.650
1240
0.126
0.208
0.557
0.720
1.039
0.520
0.650
1.107
1.297
1.647
1241
0.126
1 0.208
0.556
0.719
1.037
0.519
0.649
1.105
1.294
1.644
1242
0.126
0.208
0.555
0.718
1.035
0.518
0.648
1.102
1.292
1.640
1243
0.125
0.207
0.554
0.716
1.033
0.517
0.647
1.100
1.289
1.637
1244
0.125
0.207
0.553
0.715
1.031
0.516
0,645
1.098
1.286
1.634
1245
0.125
0.206
0.552
0.714
1.029
0.515
0.644
1.096
1.284
1.630
1246
0.125
0.206
0.551
0.712
1.027
0.514
0.643
1.093
1.281
1.627
1247
0.125
0.206
0.550
0.711
1.025
0.513
0.641
1.091
1.278
1.624
1248
0.124
0.205
0.549
0.710
1.023
0.512
0.640
1.089
1.276
1.620
1249
0.124
0.205
0.548
0.708
1.021
0.511
0.639
1.087
1.273
1.617
1250
0.124
0.205
0.547
0.707
1.019
0.510
0.637
1.084
1.271
1.614
1251
0.124
0.204
0.545
0.705
1.017
0.509
0.636
1.082
1.268
1.610
1252
0.124
0.204
0.544
0.704
1.015
0.508
0.635
1.080
1.265
1.607
1253
0.123
0.204
0.543
0.703
1.013
0.507
0.634
1.078
1.263
1.604
1254
0.123
0.203
0.542
0.701
1.011
0.506
0.632
1.075
1.260
1.600
1255
0.123
0.203
0.541
0.700
1.009
0.505
0.631
1.073
1.257
1.597
1256
0.123
0.202
0.540 1
0.699
1.007
0.504
0.630
1.071
1.255
1.594
1257
0.123
0.202
0.539
0.697
1.004
0.503
0.628
1.069
1.252
1.590
_ 1258
0.122
0.202
0.538
0.696
1.002
0.502
0.627
1.067
1.249
1.587
1259
0.122
0.201
0.537
0.694
1.000
0.501
0.626
1.064
1.247
1.584
1260
0.122 1
U.20i
0.536 1
0.693 1
0.998
0.500
0.624
1.062
1.244
1.580
1261
0.122
0.201
0.535
0.692
0.996
0.499
0.623
1.060
1.242
1.577
1262
0.122
0.200
0.534
0.690
0.994
0.498
0.622
1.058
1.239
1.573
1263
0.121
0.200
0.533
0.689
0.992
0.496
0.621
1.055
1.236
1.570
1264
0.121
0.200
0.532
0.687
0.990
0.495
0.619
1.053
1.234
1.567
1265
0.121
0.199
0.531
0.686
0.988
0.494
0.618
1.051
1.231
1.563
1266
0.121
0.199
0.530
0.685
0.986
0.493
0.617
1.049
1.228
1.560
�1267
0.120
0.198
0.529
0.683
0.984
0.492
0.615
1.046
1.226
1.557
268
0.120
0.198
0.528
0.682
0.982
0.491
0.614
1.044
1.223
1 1.553

1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
Pre -Development Discharges
I Post -Development Inflows
1 1- ear
I 2-year
10- ear
I 25- ear
1 1 00-ear
I r
2-year
I 10 ear
I 25 ear
I 100 ear
] cfs
cfs
cfs]
I [cfs
cfs
cfs
cfs
cfs]
I [cfs
cfs
0.120
0.198
0.527
0.681
0.980
0.490
0.613
1.042
1.221
1.550
0.120
0.197
0.525
0.679
0.978
0.489
0.611
1.040
1.218
1.547
0.120
0.197
0.524
0.678
0.976
0.488
0.610
1.037
1.215
1.543
0.119
0.197
0.523
0.676
0.974
0.487
0.609
1.035
1.213
1.540
0.119
0.196
0.522
0.675
0.972
0.486
0.608
1.033
1.210
1.537
0.119
0.196
0.521
1 0.674
0.970
0.485
1 0.606
1.031
1.207
1 1.533
0.119
0.195
0.520
0.672
0.968
0.484
0.605
1.029
1.205
1.530
0.119
0.195
0.519
0.671
0.966
0.483
0.604
1.026
1.202
1.527
0.118
0.195
0.518
0.669
0.964
0.482
0.602
1.024
1.200
1.523
0.118
0.194
0.517
0.668
0.481
0.601
1.022
1.197
1.520
0.118
0.194
0.516
_
0.667
__0.962_
0.960
0.480
0.600
1.020
1.194
1.517
0.118
0.194
0.515
0.665
0.958
0.479
0.598
1.017
1.192
1.513
0.117
0.193
0.514
0.664
0.956
0.478
0.597
1.015
1.189
1.510
0.117
0.193
0.513
0.662
0.954
0.477
0.596
1.013
1.186
1.506
0.117
0.192
0.512
0.661
0.952
0.476
0.594
1.011
1.184
1.503
0.117
0.192
0.511
0.660
0.950
0.475
0.593
1.008
1.181
1.500
0.117
0.192
0.509
0.658
0.948
0.474
0.592
1 1.006
1.178
1.496
0.116
0.191
0.508
0.657
0.946
0.473
0.591
1.004
1.176
1.493
0.116
0.191
0.507
0.655
0.944
0.472
0.589
1.002
1.173
1.490
0.116
0.191
0.506
0.654
0.941
0.471
0.588
0.999
1.171
1.486
0.116
0.190
0.505
0.653
0.939
0.470
0.587
0.997
1.168
1.483
0.116
0.190
0.504
0.651
0.937
0.468
0.585
0.995
1.165
1.480
0.115
0.189
0.503
0.650
0.935
0.467
0.584
0.993
1.163
1.476
0.115
0.189
0.502
0.648
0.933
0.466
0.583
0.990
1.160
1.473
0.115
0.189
0.501
0.647
0.931
0.465
0.581
0.988
1.157
1.470
0.115
0.188
0.500
0.646
0.929
0.464
0.580
0.986
1.155
1.466
0.114
0.188
0.499
0.644
0.927
0.463
0.579
0.984
1.152
1.463
0.114
0.188
0.498
1 0.643
0.925
0.462
0.577
0.981
1.150
1.460
0.114
0.187
0.497
0.641
n.923
0.461
0.576
0.979
1.147
1 A56
0.114
0.187
0.496
0.640
0.921
0.460
0.575
0.977
1.144
1.453
0.114
0.186
0.494
0.639
0.919
0.459
0.574
0.975
1.142
1.449
0.113
0.186
0.493
0.637
0.917
0.458
0.572
0.972
1.139
1.446
0.113
0.186
0.492
0.636
0.915
0.457
0.571
0.970
1.136
1.443
0.113
0.185
0.491
0.634
0.913
0.456
0.570
0.968
1.134
1.439
0.113
0.185
0.490
0.633
0.911
0.455
0.568
0.966
1.131
1.436
0.112
0.185
0.489
0.632
0.909
0.454
0.567
0.963
1.128
1.433
0.112
0.184
0.488
0.630
0.907
0.453
0.566 1
0.961
1.126
1.429
0.112
0.184
0.487
0.629
0.904
0.452
0.564
0.959
1.123
1.426
0.112
0.183
0.486
0.627
0.902
0.451
0.563
0.957
1.121
1.423
0.112
0.183
0.485
0.626
0.900
0.450
0.562
0.954
1.118
1.419
0.111
0.183
0.484
0.624
0.898
0.449
0.560
0.952
1.115
1.416
0.111
0.182
0.483
0.623
0.896
0.448
0.559
0.950
1.113
1.413
0.111
0.182
0.481
0.622
0.894
0.447
0.558
0.948
1.110
1.409
0.111
0.181
0.480
0.620
0.892
0.446
0.557
0.945
1.107
1.406
0.110
0.181
0.479
0.619
0.890
0.445
0.555
0.943
1.105
1.403
0.110
0.181
0.478
0.617
0.888
0.443
0.554
0.941
1.102
1.399
0.110
0.180
0.477
0.616
0.886
0.442
0.553
0.939
1.099
1.396
0.110
0.180
0.476 1
0.615
0.884
0.441 1
0.551
0.936
1.097
1.392
0.110
0.179
0.475
0.613
0.882
0.440
0.550
0.934
1.094
1.389
0.109
0.179
0.474
0.612
0.880
0.439
0.549
0.932
1.092
1.386
0.109
0.179
0.473
0.610 1
0.878
0.438
0.547
0.930
1.089
1.382
0.109
0.178
0.472
0.609 1
0.876
0.437
0.546
0.927
1.086
1.379
v. i c +
u.cw
u.000
u.oac
u.ayo
u.400
u.5tsL
U. Jbb I
l .l b /
1.469
0.139 1
0.228 1
0.602 1
0.777 1
1.117
0.495
0.618
1.049
1.229
1.560
0.154
0.253 1
0.668 1
1
0.863 1
1.241
0.524
0.654
1.112
1.302
-1.376
1.653
0.170
0.279
0.736
0.950
1.366
0.554
0.692
1.175
1.747
0.186
0.305
0.805
1.039
1.494
0.584
0.730
1.239
1.452
_
1.843
0.178
0.291
0.769
0.992
1.426
0.615
0.768
1.305
1.528
1.940
0.169
0.277
0.732
0.944
1.357
0.647
0.808
1.372
1.606
2.039
0.161
0.263
0.694
0.895
1.287
0.632
0.789
1.340
1.570
1.993
0.152
0.248
0.655
0.846
1.216
0.617
0.771
1.309
1.533
1.945
0.143
0.233
0.616
0.795
1.143
0.602
0.752
1.276
1.495
1.897
0.134
0.218
0.577
0.744
1.069
0.586
0.732
1.243
1.456
1.848
0.124
0.203
0.536
0.692
0.994
0.571
0.712
1.210
1.417 1
1.799

Pre -Development Discharges =1
Post -Development
Inflows
Time1
1- ear I
2-year 1
10- ear I
25- ear
1 1 00-ear
-year
2-year
10- ear
25- ear
100- ear
min
cfs
cfs
cfs
cfs
cfs
cfsl I
lcfsl I
lcfslcfs
cfs
1333
0.115
0.188
0.495
0.639
0.918
0.555
0.692
1.176
1.377
1.748
1334
0.115
0.187
0.494
0.638
0.916
0.538
0.672
1.141
1.336
1.696
1335
0.114
0.187
0.493
0.637
0.915
0.522
0.651
1.106
1.295
1.644
1336
0.114
0.187
0.493
0.636
0.913
0.505
0.630
1.070
1.253
1.591
1337
0.114
0.186
0.492
0.635
0.912
0.488
0.609
1.034
1.211
1.537
1338
0.114 1
0.186
0.491
0.634
0.910
0.470
0 5R7
0.997
1.167 1
1.482
1339
0.114
0.186
0.490
0.632
0.909
0.452
0.565
0.959
1.123
1.426
1340
0.114
0.186
0.489
0.631
0.907
0.452
0.564
0.957
1.121
1.423
1341
0.113
0.185
0.489
0.630
0.906
0.451
0.563
0.956
1.119
1.421
1342
0.113
0.185
0.488
0.629
0.904
0.450
0.562
0.954
1.117
1.418
1343 1
0.113
0.185
0.487
0.628
0.903
0.449
0.561
0.952
1.115
1.416
1344
0.113
0.184
0.486
0.627
0.901
0.449
0.560
0.951
1.113
1.413
1345
0.113
0.184
0.485
0.626
0.900
0.448
0.559
0.949
1.111
1.411
1346
0.113
0.184
0.485
0.625
0.898
0.447
0.558
0.947
1.109
1.408
1347
0.112
0.184
0.484
0.624
0.897
0.446
0.557
0.946
1.107
1.406
1348
0.112
0.183
0.483
0.623
0.895
0.445
0.556
0.944
1.105
1.403
1349
0.112
0.183
0.482
0.622
0.894
0.445
0.555
0.942
1.104
1.401
1350
0.112
0.183
0.481
0.621
0.892
0.444
0.554
0.941
1.102
1 1.398
1351
0.112
0.183
0.481
0.620
0.890
0.443
0.553
0.939
1.100
1.396
1352
0.112
0.182
0.480
0.619
0.889
0.442
0.552
0.937
1.098
1.393
1353
0.112
0.182
0.479
0.618
0.887
0.442
0.551
0.936
1.096
1.391
1354
0.111
0.182
0.478
0.617
0.886
0.441
0.550
0.934
1.094
1.388
1355
0.111
0.181
0.477
0.616
0.884
0.440
0.549
0.932
1.092
1.386
1356
0.111
0.181
0.477
0.615
0.883
0.439
0.548
0.931
1.090
1.383
1357
0.111
0.181
0.476
0.614
0.881
0.438
0.547
0.929
1.088
1.381
1358
0.111
0.181
0.475
0.613
0.880
0.438
0.546
0.927
1.086
1.378
1359
0.111
0.180
0.474
0.611
1 0.878
0.437
0.545
0.926
1.084
1.375
1360
0.110
0.180
0.473
0.610
0.877
0.436
0.544
0.924
1.082
1.373
1361
0.110
0.180
0.473
0.609
0.875
0.435
0.543
0.922
1.080
1.370
1362
0.110
0.179
0.472
0.608
0.874
0.435
0.542
0.921
1.078
1.368
1363
0.110
0.179
0.471
0.607
0.872
0.434
0.541
0.919
1.076
1.365
1364
0.110
0.179
0.470
0.606
0.871
0.433
0.541
0.917
1.074
1.363
1365
0.110
0.179
0.469
0.605
0.869
0.432
0.540
0.915
1.072
1.360
1366
0.109
0.178
0.469
0.604
0.867
0.431
0.539
0.914
1.070
1.358
1367
0.109
0.178
0.468
0.603
0.866
0.431
0.538
0.912
1.068
1.355
1368
0.109
0.178
0.467
0.602
0.864
0.430
0.537
0.910
1.066
1.353
1369
0.109
0.177
0.466
0.601
0.863
0.429
0.536
0.909
1.064
1.350
1370
0.109
0.177
0.465
0.600
0.861
0.428
0.535
0.907
1.062
1.348
1371
0.109
0.177
0.464
0.599
0.860
0.428
0.534
0.905
1.060
1.345
1372
0.108
0.177
0.464
0.598
0.858
0.427
0.533
0.904
1.058
1.343
1373
0.108
0.176
0.463
0.597
0.857
0.426
0.532
0.902
1.056
1.340
1374
0.108
0.176
0.462
0.596
0.855
0.425
0.531
0.900
1.054
1.338
1375
0.108
0.176
0.461
0.595
0.854
0.424
0.530
0.899
1.052
1.335
1376
0.108
0.175
0.460
0.593
0.852
0.424
0.529
0.897
1.050
1.333
1377
0.108
0.175
0.460
0.592
0.850
0.423
0.528
0.895
1.048
1.330
1378
0.107
0.175
0.459
0.591
0.849
0.422
0.527
0.894
1.046
1.328
1379
0.107
0.174
0.458
0.590
0.847
0.421
0.526
0.892
1.044
1.325
1380
0.107
0.174
0.457
0.589
0.846
0.420
0.525
0.890
1.042
1.323
1381
0.107
0.174
0.456
0.588
0.844
0.420
0.524
0.888
1.040
1.320
1382
0.107
0.174
0.456
0.587
0.843
0.419
0.523
0.887
1.038
1.318
1383
0.107
0.173
0.455
0.586
0.841
0.418
0.522
0.885
1.036
1.315
1384
0.106
0.173
0.454
0.585
0.840
0.417
0.521
0.883
1.034
1.313
1385
0.106
0.173
0.453
0.584
0.838 1
0.417
0.520
0.882
1.032
1.310
1386
0.106
0.172
0.452
0.583
0.836
0.416
1 0.519
0.880
1.030
1.308
1387
0.106
0.172
0.451
0.582
0.835
0.415
0.518
0.878
1.028
1.305
1388 11
0.106
0.172
1 0.451
0.581
0.833
0.414
0.517
0.877
1.026
1.303
1389
0.106
0.172
0.450
0.580
0.832
0.413
0.516
0.875
1.024
1.300
1390
0.105
0.171
0.449
0.579
0.830
0.413
0.515
0.873
1.022
1.297
1391
0.105
0.171
0.448
0.578
0.829
0.412
0.514
0.872
1.020
1.295
1392
0.105
0.171
0.447
0.576
0.827
0.411
0.513
0.870
1.018
1.292
1393
0.105
0.170
0.446
0.575
0.826
0.410
0.512
0.868
1.016
1.290
1394
0.105
0.170
1 0.446
1 0.574
0.824 11
0.409
0.511
0.867
1.015
1.287
1395
0.104
0.170
0.445
0.573
0.822
0.409
0.510
0.865
1.013
1.285
1396
0.104
0.170
0.444
1 0.572
0.821
1 0.408
0.509
0.863
1.011
1.282

1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1433
1434
1435
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
_ 1450
1451
1452
1453
1454
1455
1456
1457
Pre -Development Discharges
Post -Development Inflows
1- ear
I 2-year
1 10- ear
I 25 ear
100- ear1
1- ear
2- ear
1 10 ear
25 ear
1 00-ear
]I lcfslcfs
cfs
cfs
cfsI
lcfslcfsl
I [cfsl
rcfs1cfs
0.104
0.169
0.443
0.571
0.819
0.407
0.508
0.861
1.009
1.280
0.104
0.169
0.442
0.570
0.818
0.406
0.507
0.860
1.007
1.277
0.104
0.169
0.442
0.569
0.816
0.406
0.506
0.858
1.005
1.275
0.104
0.168
0.441
0.568
0.815
0.405
0.505
0.856
1.003
1.272
0.103
0.168
0.440
0.567
0.813
0.404
0.504
0.855
1.001
1.270
0.103
0.168
0.439
0.566
0.812
0.403
0.503
0.853
0.999
1.267
0.103
0.167
0.438
0.565
0.810
0.402
0.502
0.851
0.997
1.265
0.103
0.167
0.437
0.564
0.808
0.402
0.501
0.850
0.995
1.262
0.103
0.167
0.437
0.563
0.807
0.401
0.500
0.848
0.993
1.260
0.103
0.167
0.436
0.561
0.805
0.400
0.499
0.846
0.991
1.257
0.102
0.166
0.435
0.560
0.804
0.399
0.498
0.845
0.989
1.255
0.102
0.166
0.434
0.559
0.802
0.398
0.497
0.843
0.987
1.252
0.102
0.166
0.433
0.558
0.801
0.398
0.496
1 0.841
0.985
1.250
0.102
0.165
0.433
0.557
0.799
0.397
0.495
1 0.840
0.983
1.247
0.102
0.165
0.432
0.556
0.798
0.396
0.494
0.838
0.981
1.245
0.102
0.165
0.431
0.555
0.796
0.395
0.493
0.836
0.979
1.242
0.101
0.164
0.430
0.554
0.794
0.395
0.492
0.834
0.977
1.239
0.101
0.164
0.429
0.553
0.793
0.394
0.491
0.833
0.975
1.237
0.101
0.164
0.428
0.552
0.791
0.393
0.490
0.831
0.973
1.234
0.101
0.164
0.428
0.551
0.790
0.392
0.489
0.829
0.971
1.232
0.101
0.163
0.427
0.550
0.788
0.391
0.488
0.828
0.969
1.229
0.100
0.163
0.426
0.549
0.787
0.391
0.487
0.826
0.967
1.227
0.100
0.163
0.425
0.547
0.785
0.390
0.486
0.824
0.965
1.224
0.100
0.162
0.424
0.546
0.783
0.389
0.485
0.823
0.963
1.222
0.100
0.162
0.423
0.545
0.782
0.388
0.484
0.821
0.961
1.219
0.100
0.162
0.423
0.544
0.780
0.387
0.483
0.819
0.959
1.217
0.100
0.161
0.422
0.543
0.779
0.387
0.482
0.818
0.957
1.214
0.099
0.161
0.421
0.542
0.777
0.386
0.481
0.816
0.955
1.212
0.099
0.161
0.420
0.541
0.776
0.385
0 480
0.814
0.953
1.209
0.099
0.161
0.419
0.540
0.774
0.384
0.479
0.812
0.951
1.207
0.099
0.160
0.418
0.539
0.772
0.383
0.478
0.811
0.949
1.204
0.099
0.160
0.418
0.538
0.771
0.383
0.477
0.809
0.947
1.202
0.099
0.160
0.417
0.537
0.769
0.382
0.476
0.807
0.945
1.199
0.098
0.159
0.416
0.536
0.768
0.381
0.475
0.806
0.943
1.197
0.098
0.159
0.415
0.534
0.766
0.380
0.474
0.804
0.941
1.194
0.098
0.159
0.414
0.533
0.765 1
0.380
0.473
0.802
0.939
1.192
0.098
0.158
0.413
0.532
0.763
0.379
0.472
0.801
0.937
1.189
0.098
0.158
0.413
0.531
0.761
0.378
0.471
0.799
0.935
1.187
0.097
0.158
0.412
0.530
0.760
0.377
0.470
0.797
0.933
1.184
0.097
0.158
0.411
0.529
0.758
0.376
0.469
0.796
0.931
1.181
0.097
0.157
0.410
0.528
0.757
0.376
0.469
0.794
0.929
1.179
0.097
0.157
0.409
0.527
0.755
0.375
0.468
0.792
0.927
1.176
0.097
0.157
0.408
0.526
0.754
0.374
0.467
0.790
0.925
1.174
0.097
0.156
0.408
0.525
0.752
0.373
0.466
0.789
0.923
1.171
0.093
0.151
0.394
0.508
0.728
0.367
0.458
0.775
0.908
1.152
0.087
0.141
0.369
0.475
0.680
0.355
0.443
0.751
0.878
1.114
0.078
0.127
0.331
0.426
0.610
0.338
0.421
0.714
0.836
1.060
0.066
0.108
0.281
0.361
0.518
0.315
0.393
0.666
0.779
0.989
0.052
0.084
0.218
0.281
0.402
0.287
0.358
0.606
0.710
0.900
0.039
0.063
0.163
0.210
0.302
0.253 1
0.316
0.535
0.626
0.795
0.028
0.045
0.117
0.150 1
0.215
1 0.214 1
0.267 1
0.452
0.530
0.672
U.Ulu
U.000
U.Uro I
U.iUU I
U.143
U.Ilif I
U.CZC I
U.3[1
U.441 I
0.559
0.011
0.018
0.047 1
0.060
0.086
0.146
0.182
0.308
0.361
0.457
0.006
0.009
0.023
0.030
0.043
0.117
0.145
0.246
0.288
0.366
0.002
0.003
0.008
0.010
0.014
0.091
0.113
0.191
0.224
0.284
0.000 1
O.000
0.000 1
0.000
0.000
0.068
0.085
0.143
0.168
0.213
0.000
0.000
0.000
0.000
0.000
0.048
0.060
0.102
0.120
0.152
0.000
0.000
0.000
0.000
0.000
0.032
0.040
0.068
0.080
0.101
0.000
0.000
0.000
0.000
0.000
0.019
0.024
0.041
0.048
0.061
0.000
0.000
0.000
0.000
0.000
0.010
0.012
0.020
0.024
0.030
0.000
0.000
0.000
0.000_
0.000
0.003
0.004
0.007
0.008
0.010

Stormwater Pond Active Storage
Contour Elevation
Contour
Area
Increment.
Volume
Accum.
Volume
Stage (Z)
I
In (S)
L
In (Z)
I [fmsi]
I [sQ ft]
I [cu ft]
I [cu ft]
I [ft]
I
I I
14.50
39,262
0
0
0.00
0.000
0.000
15.50
44,907
46,302
46,302
1.00
10.743
0.000
16.50
47,697
49,119
95.421
2.00
11.466
0.693
17.50
50,541
51,992
147,413
3.00
11.901
1.099
18.50
53,443
26,722
1 174,135
4.00 1
12.068
1 1.386 -11
b = 0.9802 b = [In (S2/S,)]/[In (Z2/Z,)] = (slope of regression)
Ks = 4.74E+04 KS = S2/Z2b = (exp - intercept of regression)
Stage Storage Parameters
j 12.50
I
j12.25
-._ _. _..._ . ;. .......
__ _ .................. .......
12.00
11.75
11.50
.-_... ;...... .........
_ ............. _... ... ....... ..._... - ----
m 11.25
S 11.00
10-75
10.50
In(Storage) = 1.002*In(Stage) + 10.773
10.25-..
...... ..
.... ._..... ........ RZ__ 0.993 ..:........ .......... .
10.00
9.75
I
0.00 0.15 0.30 0.45 0.60 0.75 0.90 1.05 1.20 1.35 1.50
In (Stage)
• Stage Storage Linear (Stage Storage)1

Ferguson Site
Chainsaw Routing Procedure Summary Sheet
1-year Storm Event
Permanent Pool Elev.:
14.50
[fmsl]
Riser.
Length
48
[in]
Concrete
Elevation
A i 6.00
[fmsl]
Box
Weir Coef.
3.33
Number
1
[each]
Overflow
Length
50
[ft]
Emergency
Bot. Elevation
17.5
[fmsl]
Spillway
Top Elevation
18.4
[fmsl]
Weir Coef.
3.0
Qpre,peak Discharge ................................ 0.6 cfs
Qpost,in,peak Inflow ................................. 25.4 cfs
Qpost,out,peak Discharge .......................... 0.6 cfs
Maximum Water Surface Elevation ................ 16 fmsl
Peak Stage Time ...................................... 1199 min
1stControl Diameter
Circular
Elevation
Bleeddown
Orif. Coef
Orifice
Number
Barrel
Diameter
Principal
Elevation
Spillway
Orif. Coef
Number
2nd Control
Diameter
Circular
Elevation
Orifice
Orif. Coef,
Number
Ferguson Stormwater Pond Routing
i year Storm Event
4
[in]
14.50
[fmsl]
0.60
[ 1
[each]
36
[in]
14.40
[fmsl]
0.60
1
[each]
0.0
[in]
0.00
[fmsl]
0.00
0
[each]
19.00
18.50
18.00
— - 17.50
17.00 W
E
16.50 m
M
--- 16.00
co
15.50
15.00
14.50
14.00
0 120 240 360 480 600 720 840 960 1.080 1,200 1,320 1,440
Time (min)
'ice -Inflow Qpost — — — Qpre Stage - - - - - - Riser Elevation — Emergency Spillway Top of Pond

Ferguson Site
Chainsaw Routing Procedure Summary Sheet
2-year Storm Event
Permanent Pool Elev.: 1 14.50 [fmsl]
Riser
Length
48
[in]
Concrete
Elevation
la 00
[fmsl]
Box
Weir Coef.
3.33
Number
1
[each]
Overflow
Length
50
[ft]
Emergency
Bot. Elevation
17.5
[fmsl]
Spillway
Top Elevation
18.4
[fmsl]
Weir Coef.
3.0
Qpre,peak Discharge ................................ 2.01 cfs
Qpost,in,peak Inflow ................................. 33.71 cfs
Qpost,out,peak Discharge .......................... 1.98 cfs
Maximum Water Surface Elevation ................ 16.2 fmsl
Peak Stage Time ...................................... 903 min
1st Control
Diameter
4
[in]
Circular
Elevation
14.50
[fmsl]
Bleeddown
Orif. Coef.
0.60
Orifice
Number
[ i I
[each]
Barrel
Diameter
36
[in]
Principal
Elevation
14.40
[fmsl]
Spillway
Orif. Coef
0.60
Number
1
[each]
2nd Control
Diameter
0.0
[in]
Circular
Elevation
0.00
[fmsl]
Orifice
Orif. Coef.
0.00
Number
0
[each]
Ferguson Stormwater Pond Routing
2 year Storm Event
19.00
18.50
18.00
- - 17.50
17.00 W
E
V..
16.50 m
ca
16.00
15.50
15.00
14.50
14.00
0 120 240 360 480 600 720 840 960 1.080 1,200 1,320 1,440
Time (min)
Inflow ---^ Qpost — — — - Qpre Stage - - Riser Elevation — - - — Emergency Spillway — - — - -Top of Pond i

Ferguson Site
Chainsaw Routing Procedure Summary Sheet
10-year Storm Event
Permanent Pool Elev.: 1 14.50 [fmsl]
Riser
Length
48
[in]
Concrete
Elevatio,^,
16.00
[fmsl]
Box
Weir Coef.
3.33
Number
1
[each]
Overflow
Length
50
[ft]
Emergency
Bot. Elevation
17.5
[fmsl]
Spillway
Top Elevation
18.4
[fmsl]
Weir Coef.
3.0
110-vr Storm Results
Qpre,peak Discharge ................................ 16.82 cfs
Qpost,in,peak Inflow ................................. 64.41 cfs
Qpost,out,peak Discharge .......................... 15.08 cfs
Maximum Water Surface Elevation ................ 17.1 fmsl
Peak Stage Time ...................................... 755 min
1st Control
Diameter
4
[in]
Circular
Elevation
14.50
[fmsl]
Bleeddown
Orif. Coef.
0.60
Orifice
Number
1 i
[each]
Barrel
Diameter
36
[in]
Principal
Elevation
14.40
[fmsl]
Spillway
Orif. Coef
0.60
Number
1
[each]
2nd Control
Diameter
0.0
[in]
Circular
Elevation
0.00
[fmsl]
Orifice
Orif. Coef.
0.00
Number
0
[each]
Ferguson Stormwater Pond Routing
'410 year Storm Event
19.00
18.50
18.00
- 17.50
17.00 H
E
w
16.50 d
rn
16.00 N
15.50
15.00
14.50
14.00
0 120 240 360 480 600 720 840 960 1,080 1,200 1,320 1,440
Time (min)
�� Inflow Qpost — Qpre Stage - - - - - - Riser Elevation — - - — • Emergency Spillway •Top of Pond

Ferguson Site
Chainsaw Routing Procedure Summary Sheet
25-year Storm Event
Permanent Pool Elev.:
14.50
[fmsl]
Riser
Length
48
[in]
Concrete
Elevation
I 116.00
[fmsl]
Weir
Weir Coef.
3.33
Number
1
[each]
Overflow
Length
50
[ft]
Emergency
Bot. Elevation
17.5
[fmsl]
Spillway
Top Elevation
18.4
[fmsl]
Weir Coef.
3.0
Qpost,in,peak Inflow ................................
Qpost,out,peak Discharge .........................
Maximum Water Surface Elevation ...............
Peak Stage Time .....................................
80
72
I
64
56
I
48
w
3 40 -
0
Lt. 32
24
16
8f
I
0
25.62 cfs
77.51 cfs
23.76 cfs
17.4 fmsl
751 min
1 st Control
Circular
Bleeddown
Orifice
Barrel
Principal
Spillway
2nd Control
Circular
Orifice
Ferguson Stormwater Pond Routing
25 year Storm Event
Diameter 4.0 [in]
Elevation 14.50 [fmsl]
Orif. Coef. 0.60
Number lir 1 �I [each]
Diameter 36 = [in]
Elevation 14.40 [fmsl]
Orif. Coef 0.60
Number 1 [each]
Diameter 0.0 [in]
Elevation 0.00 [fmsl]
Orif. Coef. 0.00
Number [each]
I. 19.00
_...... ......... - 1 18.50
18.00
------------
- - ---------•- - --- --
17.50
........ ..... ......._.._...._..-............. ... ...._ .. 17.00
16.50
rn
m
_.._.__._._.._.___._._....._._._..__..__.._._.__._._._._ 16.00 N
15.50
..15.00
... ....... ......._ ._..:._.-........ 14.50
14.00
0 120 240 360 480 600 720 840 960 1,080 1,200 1,320 1,440
Time (min)
Inflow Qpost — Qpre Stage Riser Elevation — - - — Emergency Spillway — - — - • Top of Pond

Ferguson Site
Chainsaw Routing Procedure Summary Sheet
100 year Storm Event
Permanent Pool Elev.: 14.50 [fmsl] 1st Control Diameter 4 [in]
Circular Elevation 14.50 [fmsl]
Riser Length I48 [in] Bleeddown Orif. Coef. 0.60
Concrete Elevation 116.00 [fmsl] Orifice Number 1 [each]
Box Weir Coef. 3.33
Number 1 [each] Barrel Diameter 36 [in]
Principal Elevation 14.40 [fmsl]
Overflow Length 50 [ft] Spillway Orif. Coef 0.60
Emergency Bot. Elevation 17.5 [fmsl] Number 1 [each]
Spillway Top Elevation 18.4 [fmsl]
Weir Coef. 3.0 2nd Control Diameter 0 [in]
Circular Elevation 0.00 [fmsl]
Orifice Orif. Coef. 0.00
100-yr Storm Results Number 0 [each]
Qpre,peak Discharge ................................ 44.51 cfs
Qpost,in,peak Inflow ................................. 101.88 cfs
Qpost,out,peak Discharge .......................... 64.93 cfs
Maximum Water Surface Elevation ............... 17.8 fmsl
Peak Stage Time ...................................... 737 min
Ferguson Stormwater Pond Routing
100 year Storm Event
_... ... ... --- -- --1, 19.00
- - - _ - - --------- - - - - -- - - - -- 18.50
18.00
--- •-- ---- 17.50
17.00 N
E
w
m
15.50
15.00
14.50
14.00
0 120 240 360 480 600 720 . 840 960 1,080 1,200 1,320 1,440
Time (min)
I—•�� Inflow ----- Qpost — — - Qpre Stage - - - - - - Riser Elevation — Emergency Spillway - — - • Top of Pond

Ferguson Site
Overflow Design
100-year Storm Event
Permanent Pool Elev.: 1 0.00 [fmsl]
Riser
Length
0
[in]
Concrete
Elevation
0.00
[fmsl]
Box
Weir Coef.
0.00
Number
0
[each]
Overflow
Length
50
[ft]
Emergency
Bot. Elevation
17.5
[fmsl]
Spillway
Top Elevation
18.4
[fmsl]
Weir Coef.
3.0
Qpre,peak Discharge ................................
44.51 cfs
Qpost,in,peak Inflow .................................
101.88 cfs
Qpost,out,peak Discharge ..........................
92.93 cfs
Maximum Water Surface Elevation ................
18.23 fmsl
Peak Stage Time ......................................
732 min
110
991
88
77
66 .
w
c�
� 55
0
LL 44
33 {
22
11
Ii
0I
0
1 st Ctd
Circular
Bleeddown
Orifice
Barrel
Principal
Spillway
Diameter
Elevation
Orif. Coef
Number
Diameter
Elevation
Orif. Coef
Number
2nd Control Diameter
Circular Elevation
Orifice Orif. Coef.
Number
Pond Spillway Capacity
100 year Storm Event
0 [in]
0.00 [fmsl]
0.00
0 [each]
0 [in]
0.00 [fmsl]
0.00
0 [each]
0 [in]
0.00 [fmsl]
0.00
0 [each]
120 240 360 480 600 720 840 960 1,080 1,200 1,320
Time (min)
_.......... ._._ . .
Inflow Stage — - - — • Emergency Spillway — - — - -Top of Pond
— 18.50
1 18.35
18.20
18.05
17.90 w
E
17.75 N
rn
17.60
`I
1 17.45
17.30
17.15
I
17.00
1,440

Energy Dissipater Design
For
Ferguson Distributors
New Hanover County, [North Carolina

RIP RAP APRON DESIGN SHEET
DATE:
May 6, 2008 03:53 PM
PROJECT:
FSM—n Distributors
I.D. NO.:
PROJECT NO.:
650-03
FILE:
DESCRIPTION:
Rip Rap Apron at Principal Spillway Barrel
LOCATION:
Rip Rap Zone Delineation
25
Q11
5
0
New Hanover County, North Carolina
0 5
10 15 20 25
Do, Depth of Flow (ft.)
Notes: 1. Use nod higher tune for grades>10%.
2. For pipe arch, arch, box culvert, paved channel ou", use De=Cross sectional area of outlet tow.
Number of Culverts:
1
Design Velocity, Vd :
9.78 Itfs
Flow, 0:
23.e0it
Pipe Diameter, Do:
3 R
Slope, s pn n=
0.01 ILAL
Using NCDOT Rip Rap Apron Design:
Use:
Zone 2
L1: 9 ft.
L2: 18 ft.
W: 6.6 ft.
W: 10.2 ft.
CLASS'S' RIP RAP
USE MINIMUM 18" STONE THICKNESS
TOTAL STONE VOLUME= 89.1 ft3
275.4 ft3
■ Design Point
*Based upon L,
"Based upon L2
DESIGN BY
CHECKED BY J
MINIMUM
CLASS
L7
STONE
NCDOT RIP
OF
Coefficient
LI Coefficieni
THICKNESS
ZONE
RAP CLASS
STONE
ft.
ft.
in.
1
'A'
FINE
3
4
12
2
'B'
LIGHT
3
6
1t
3
1
MEDIUM
4
6
24
4
1
HEAVY
4
B
36
5
2
HEAVY
5
10
36
6
2
HEAVY
5
10
36
T
Des B
nd the Sco
a of This Method
Lt =Length to Protect Culvert
L2 =Length to Prevent Scour Hole
NAME I WEIGHT SIZE
SPECIFICATIONS
LBS
RIP
-RAP
CLASS 1
5-200
30%SHALL WEIGH AT LEAST 60 LBS. EACH.
NO MORE THAN 10%SHALL WEIGH LESS
THAN 15 LBS. EACH
CLASS 2
25-250
60%SHALL WEIGH AT LEAST 60 LBS. EACH.
NO MORE THAN 5% SHALL WEIGH LESS
THAN 50 LBS. EACH
EROSION
CONTROL STON
CLASS A
26'
10%TOP & BOTTOM SIZES.
NO GRADATION SPECIFIED
CLASS B
15-300
5-15
NO GRADATION SPECIFED

Material .......................
Mannings Roughness....
Diamter of Pipe, D.........
Slope, S......................
Design Flow, Q.............
Full Velocity, VFULL• • • • • • • • .
Full Flow, QFULL...... • • • • • •
Max Flow, Qm"............
Depth @ Max, d......... .._
Theta, 0.......................
Area, A ........................
Perimeter, P.................
Wetted Area, k............
Wetted Perimeter, P......
Hydraulic Radius, Rh......
..__.._..._..._......--
Plastic Pipe
0.011
23.80
3.00
0.0100
10, 681
11.18
79.04
85.02
2.81
2.64
7.07
9.42
2.43
3.96
0.61
[ft3is]
[ft]
[ft/ftl
Igpml
[ft/s]
[ft3/s]
[ft3/sl
[ft]
[rad]
[ft l
[ft]
[ft2]
[ft]
[ft]
Depth of Flow, d............ 1.13 [ftl
Velocity, v.................... 9.78 [ft/s]

Outlet Channel Capacity Design
For
Ferguson Distributors
New Hanover County, North Carolina

Outlet Channel Design
Ferguson Distributors
Outlet Channel Capacity Design (Max Principai Spillway Barrel FioW)
Max Channel Flow, Qmax 1 23.78 [cfs] See Hydrograph Routing
Depth of Channel, d 1.25 [ft]
Bottom Width of Channel, B = 5 IN
Channel Roughness, n = 0.035 [earthern]
Channel Side Slope, m 3 [m:1]
Capacity Conveyance Factor, Kc = (B*d + m*d2)'.66' _ (B + 2*d*(1+m)0.5)0.667
Capacity Conveyance Factor, Kc = (5*1.25 + 3*1.25 ^ 2) ^ 1.667 _ (5 + 2*1.25*(1 +3 ^ 2) ^ 0.50) ^ 0.667
Capacity Conveyance Factor, Kc = 1 9.795
Mimimum Channel Slope, Sm = 100*(Amax / (1.49*Kc/n))2
Mimimum Channel Slope, Sm = 100*(23.78 / (1.49*9.795/0.035)) ^ 2
Mimimum Channel Slope, Sm = 0.33 [%]
Designed Channel Slope, Sd =
Slope Provided = 0.50 > 0.33 = Slope Req'd
Outlet Channel Velocity Design (Max Principal Spillway Barrel Flow)
Depth of Flow in Spillway Channel, D = 1 1.1 [ft] <-- Solver
Velocity Conveyance Factor, Kv = ( (B*d + m*d2) _ (B + 2*d*(1 +m2)0.5))0.667
Velocity Conveyance Factor, Kv = 5*1.12 + 3*1.12 ^ 2) - (5 + 2*1.12*(1 +3 ^ 2) ^ 0.50) ) ^ 0.667
Velocity Conveyance Factor, Kv = 1 0.844
Channel Velocity, Vel = (1.49*Kv / n)*S0-50
Channel Velocity, Vel = 1.49*0.844 / 0.035)*(0.5/100) ^ 0.50
Channel Velocity, Vel = 2.5 [fps]
Maximum Channel Velocity, Vmax = 2.5 = [fps]
OK
Velocity Provided = 2.5 < 2.5 = Max Velocity OK

LLB ECS CAROLINAS, LLP
rT=�ew�r+a.*�.• �+ru.+rs�ra..�...+�q .- �w-c.+...�r..r� :w ..�.
CAROLMIMAD Geotechnicai j Construction Materials ° Environmental • Facmties ...��
ivt. Jay Carmine, P E. hbw 12, 2008
Coastal Lead Dew, PLLC
P.O. Box 1172
W :l ngton, North Carol m 28402
Re: Seasawl H* water Tavel E#fta#on
Farmon Distributors
wsl gtoA, North Carolina
ECS Project No. 22.14056
Dear Mr. Carmine,
ECS Camlinas, LLP (ECS) recently conducteed an estimation of the Seasonal High Water Low] (SHWL)
for the proposed wet pond area at the Ferguson Distributors Site m Wilm iWon, North Carolina. This
letter, with agents, is the report of our estimation.
On May M 2408 IBCS met with Mr. Jay CarJEllkO with Coastal Land Design in order to locate the
requated bmisng location. ECS then eonducied an ear Amstioa of the subsurface soff conditions at one
requested locat on shown on the attached Site Diagram. The purpose of this aVloration was to wtsmat
the SHWL of the in -Place, soils for the proposed wet pond areas. we e&plored the subspace sod
oondatwna by advming one hand aunt boring m1oo the wstimg ground surface at the requested, boring
loeat im We visually classified the subsurface soils and obtained representative .samples of each soil type
OnDowtered. The attad dl SHWL sheet provides a summary of the subsurface oonftons a nc tad at
each hand auk boring loca#om
The SHWL was estimate at the boring location below the emgftg grade elevation. Below is a summary
of each boring locatim
Location MVL.
1 inches
The SHE,, array vary within the proposed site due to changes in subsurface conditions and elevag m.
If you leave any Twstiotts regarding this report, please contact us at [phone],
ReqwhUly,
ECS CAROLINAS, LLP
I� wall
Staff Geologist
PIXMM,=- f : � 1, • r a
Waled M. Sobh, P. E.
Primtal Vie'
7211 Ogden Business 1 Safte 201 -v Vnminvton, NC MA11 (91t1168- -9114 T Fax [phone] - e : > .^
Ash wMr. NC • 0w10€e, NC • e3re mbom, NC - Greemiile, SC,Raleigh, NC • 3w=bM. NC * • W�a. NC
s� �� B"

Season High Water Level Est tnation
Ferguson Distributors
Wilxningtor, Nora. Carolina
ECS Project No. 22.14056
May 12.1 2000
Location Depth Soil Description
1 0R 12" Grey fine SAND
1.2"-36" Tan fine SAND
Seasonal High Water Table was estimated to be at 36 inches below the existing
grade elevation.

RE: Ferguson Distributors
Subject: RE: Ferguson Distributors
From: "Pete Avery" <[e-mail]>
Date: Tue, 6 May 2008 09:17:44 -0500
To: "'Janet Russell"' <[e-mail]>
CC: "'JAY"' <[e-mail]>, "ken dull" <[e-mail]>
I, Walter Pete Avery, am a duly authorized agent of the applicant and will
be in attendance for the May 13th meeting with respect to the subject
project.
Thanks,
-----Original Message -----
From: Janet Russell [mailto:[e-mail]]
Sent: Monday, May 05, 2008 4:22 PM
To: JAY; [e-mail]
Subject: Ferguson Distributors
May 5, 2008
*Ferguson Distributors
*Gentlemen:
The Express stormwater submittal meeting for the modification to the
Ferguson Distributors' permit has been scheduled with* Chris Baker on
May 13, 2008 at 9:30 AM *here in the Wilmington Regional Office. The
applicant must be represented at the meeting.
_Please respond within 2 business days to confirm and reserve the
submittal meeting date_. Please review the submittal requirements,
attached. The Express Review fee for a high density modification is
$4,000 payable at the submittal meeting.
Thanks,
Janet Russell
Express Coordinator
1 of 1 5/6/2008 11:51 AM

RE: Ferguson Distributors
Subject: RE: Ferguson Distributors
From: "JAY"<[e-mail]>
Date: Tue, 6 May 2008 09:26:14 -0400
To: "'Janet Russell"' <[e-mail]>
Yup, we're good to go for that meeting.
-----Original Message -----
From: Janet Russell [mailto:[e-mail]]
Sent: Monday, May 05, 2008 5:22 PM
To: JAY; [e-mail]
Subject: Ferguson Distributors
May 5, 2008
*Ferguson Distributors
*Gentlemen:
The Express stormwater submittal meeting for the modification to the
Ferguson Distributors' permit has been scheduled with* Chris Baker on
May 13, 2008 at 9:30 AM *here in the Wilmington Regional Office. The
applicant must be represented at the meeting.
_Please respond within 2 business days to confirm and reserve the
submittal meeting date_. Please review the submittal requirements,
attached. The Express Review fee for a high density modification is
$4,000 payable at the submittal meeting.
Thanks,
Janet Russell
Express Coordinator
1 of 1 5/6/2008 12:01 PM

2008-May-05 09:08 Coastal Land Design 9102540502
1/5
Coastal Land Design, PLLC.
P. 0. Box 1172
Phone: 910.254.933
Wiimington, NC 28402
3 Fax:[phone]
To:
Janet Russell
From:
Jay Carmine
Re:
Ferguson Distributors
Date:
05-May-2008
Fax Transmittal
Fax: (910) 350 - 2004
CC:
Pages: 5 6w. CU*"P)
Job #: 650-03
IF YOU DO NOT RECEIVE THIS DOCUMENT CLEARLY. PLEASE CALL [phone]_
© This is your original. ❑ Odginal to be mailed.
Janet
This facsimile is for the Request for Express Permit Review for Stormwater, A stormwater application,
narrative and questionnaire are included in this fax.
This is a modification to the existing stormwater project that was recently permitted. Please let me
know If there is anything also that you require.
Jay
® E C E i V iF-1
f
MAY 0 5 20C-'
DWQ
PROJ #
650.03 Fax -Janet Russell Express 050508.doc

2008—May-05 09:09 Coastal Land Design 9102540502
2/5
r"lo c�► 0 103 VCA
NCDFIR
North Carolina Department of Environment and Natural Resources
127 Cardinal Drive, Wilmington NC 28405 [phone] FAX [phone]
1
Request for Express Permit review
FILL-IN all information below and CHECK required Pernrit(s).
FAX or email to Cameron.1108yed9nimall net along with a narrative and vtolnity man of the project location.
Projects must be submitted by 9:00 A.M. of the review date, unless prior arrangements are made,
APEWNrINFORMATION
Names Robert E. Huckabee, Ili
Company: Cape Fear Investment & Develops
Address., 1161 Castle Hayne Road Building B
Phone: [phone] Fax:
Project Name:
Project System
Distributors
Wilmington, NC Zip: 28401 County: New Hanover
Email: A1@ mcklnl buJ1 in .
to: Cape Fear River (Stream Name) Cape Fear (River
ENGINEER / CONSULTANT INFORMATION
Name: JU Carmine, PE
Company: Coastal Land Design, PLLC
Address: P.O. Box 1172 City/State: Wilmington, NC Zip: 28402 County: New Hanover
Phone: C910) 254 — 9333 17ax: (919) 254 — 0502 Email: icarmineCa?coastallanddesion,net
State or National avitonmental Policy Act (SEPA, NEPA) — EA or E1S Required: ® No ❑ Yes
STREAM ORIGIN DETERMINATION Number of Stream Calls; Stream Name:
STORMWATER ❑ Low Density -Standard ®
High Density — Detention Pond ❑
High Density — Other
(check all that epi* ❑ Low Density. Curb & Outter ❑
High Density — Infiltratiou ❑
Of Site
Wetlands Must Be Addressed Below ®
NPDBS — Phase 11 ®
Plan Revision
COASTAL ❑ Excavation and bill ❑
Bridges and Culverts ❑
Structures Information
MANAGEMENT ❑ Upland Development ❑
Marina Development ❑
Urban Watcr&ont
LAND QUALITY ❑ Erosion and Sedimentation Control Plan with acres to be disturbed
WETLANDS Wetlands on Property ❑ Yes
® No Isolated Wetlands:
❑ Yes ® No
Wetlands will be Impacted ❑ Yes
❑ No Wetland hupacts:
0 acres
Check All Wetlands Delineation has been completed ❑ Yes
❑ No Buffers Impacted:
n/a acres
Thet Apply USACOB Approval of Delineation ❑ Yes
❑ No
404 Application in process w/USAC0E ❑ Yes
❑ No Pemtit from USACE:
❑ Yes ❑ No
401 Application required ❑ Yes
❑ No If Yes: ❑ Regular
❑ Express .
Additional fees, not to exceed 50% of the original Express Review permit application he, may be charged for subsequent reviews
due to the insufficiency of The permit applications.
For DENR use only Total Fee $ SW E C r " V
DLQS
DWO
PROD #

2008-May-05 09:10 Coastal Land Design 9102540502 3/5
Narrative
PMLeot_D_escription
This express stormwater project is for the development of approximately 13.84 acres of land off of
N.C. Highway 421 in New Hanover County. This oraiect will be a modification Ig the existing
stom�water nemit_for this site since at the client's request the pond has been relocated and sliahtiv
resized to better accommodate their needs. Ferguson DisViibutors will be a high density industrial
area which will use storm sewers to convey stormwater to an onsite stormwater pond. All drainage
will be directed towards one stormwater pond designed to meet both NCDENR and New Hanover
County requirements. The erosion control permit for this development will be obtained from New
Hanover County.
Site Description
The topography of Ferguson Distributors is slightly rolling with mild slopes ranging from 0.5% to 1 %.
The site ultimately drains to the Cape Fear River 18-(63), a waterway classifled as C:Sw. The
elevatlons on this project ranges from 13 fleet MSL to 18 feet. This property is zoned IND-2.
Storm -water Treatment
Storm sewers will be installed in order to direct stormwater to the proposed stormwater pond. The
proposed stormwater pond will be designed to treat the stormwater runoff from Ferguson
Distributors according to NCDENR's and New Hanover County's stormwater requirements.
� E fv' F r 9i E
M�
.: D
. 5 .�
PROS # �... .,.

2008-May-05 09:10 Coastal Land Design 9102540502 4/5
5tormwater Express Questionnaire (7/10/2007)
1.
N
3.
Project Name Mariner
What is the applicant's full legal name? Robert E. Huckabse, III
Is the applicant associated with A Sole proprietor R Corporation ® LLC
,J Partnership ,, Munloipality
If its an LLC, is it ElManager-managedor ® Member -managed?
DWhat is the applicant's title within the Corp., LLC or Partnership?
Manager
Will an agent someone of erthan the applicant) be signing the application? ❑ Yes ® No
If Yes, what Is the agent's name and title?
(PP/ease note the application signature requirements are listed in NCAC 2H.1003 (0). In
summary, only the sole proprietor of a sole proprietorship, the designated manager, member -
manager president or vice president of a corporation or LLC, the general partner of a
partn;W ip, or a ranking official of a municipally may sign permit applications and supplements.
The signature of the engineer or other agent can be accepted only if accompanied by a signed
letter of authortration from one of the aforementioned individuals. Corporations, LLC 's and
Partnerships must be registered with the NC Secretary of State's Office, and be active. Please
note that spelling, capitalization, and punctuation are extremely important. Please provide the
entity name exactly as on file with the NC Secretary of State.
Where is the project located?
County Now Hanover Nearest Town/City Wilmington
(Attach a detailed vicinity map with both local street names and SIB NO, US or Interstate
highway numbers, plus other relevant information such as town or city names, dlrectlons to, etc.
Show the nearest intersection of two major roads on the vicinity map. A major road is any 1, 2 or
3 digit NC, US or interstate highway.)
If the project is located in Brunswick, Onslow, or New Hanover Counties, or a small
portion of northern Pender County or the unincorporated areas outside of Morehead City
and Atlantic Beach in Carteret County, NPD S Phase II Post -Construction rules will
apply, unless a vested development right, as described in the Session Law, can be
demonstrated, which Is dated prior to July 1, 2007.
What is the name of the receiving stream? Cape Fear River
What River Basin is it located in? Cape Fear
What Is the classification of the receiving stream?
For SA or SR waters, a separate scaled topographic map will be required The project must
accurately located on the map and the X mile radius from the property comer closest to the SA
or SR receiving stream must be drawn on the map. If you claim that the project is not within N
mile of SA or SR waters, you must conduct a series of chlorides tests to demonstrefe that the
chlorides level at a point in the receiving stream that is at least % mile from the project Is less
than 500 ppm. Samples must be sent to a State certified lab for testing.
If the project Is high density, what type of stormwater management BMP's are being proposed?
(check all that apply)
Wet Detention Infiltration Trench Infiltration Basin 8 Sand Filter
Blo-retention, Wetlands Alternative Offske
Dry Detention NPDES Phase II Other
How many separate BMP's are being proposed? 1 2 3 4 5 6 7 8 9 10 11 12 Other
Is there offslte runoff from the adjacent properties or public right-of-way that will drain into any of
the proposed BMP's on the project and is not being diverted? LJ Yes ® No ❑ NIA
Is a road across other property required to access the project? ❑ Yes ® No ❑ NIA
Page 1 of 3

2008-May-05 09:11 Coastal Land Design 9102540502
5/5
Project Name Mariners -Reach
7. Is there any existing development or pre-1988 existing BUA located on the pro e�y?
(Please document, delineate and ldenfify on the plans.) El Yes R I�IO ❑ N/A
B. Will the high density project collect all of the proposed BUA? ® Yes ❑ No ❑ NIA
(!f not, roach a separate elcplene ion shee#,'
9. Will the project involve the subdivision and sale of property? [] Yes ® No ❑ NIA
Is the subdivision ❑ residential or ❑ commercial?
How many lots are proposed? NIA
(Deed restrictions are require for all resldential, commercial, low density or high density sub-
divisions. Specific language for the various types of subdivisions is available from DENR.)
10. Will the plans show all delineated wetlands? ❑ Yes ❑ No ® N/A
(All projects require either a signed wetlands delineation map or a wetlands report to be
submitted with the application. Only a trained professional may provide information regarding
the presence or absence of wetlands.)
11. Are wet detention ponds or other engineered controls proposed to be located ad'acent
wetlands? ❑ Yes No ❑ N/A
(If, yes, a physical means to prevent the dewatering of the wetland must be provided, or the
SHWT must be provided to demonstrate that the permanent pool of the BMP is above the
SHWT and will not dewater the wetlands over time. Where possible, all BMP's and swales
should outlet Into back the wetland (with level spreaders).
12. For Infiltration projects, a site visit must be completed with the DBNR soils scientist to verify the
soil type, water tale and infiltration rate provided In the soils report.
What Is/was the scheduled site visit date? NIA
(Include a copy of the consultant's soil report with the application.)
13. Level Spreaders are required at the outlet of all engineered controls d swal�s prior to entering
surface waters or wetlands. Will the plans reflect level spreaders? � Yes Li No ® N/A
(The purpose of the level spreader is to reduce the energy of the incoming runoff and to
Promote diffuse sheet flow to prevent erosion and scour into the receiving waters or wetlands.)
14. 1s this project A modification to an existing permit
A lot that will be treated in an existing, previously permitted BMP?
What Is the name of the existing permitted facility? Cape FopE Business Park
What is the permit number of the existing permitted facility? SW8 07Q319 _
Is the permitted facility in compliance with its permit? Yes No WA
Have the deed restrictions been recorded? Yes No N/A
Have the deed restrictions been submitted? Yes No N/A
Has the Designer's Certification been submitted? Yes H No N/A
15. Do the plans reflect all Information in 15A NCAC 21-1.1003 (g)? ® Yes ❑ No ❑ N/A
16. Will all of the design requirements for each proposed BMP be met? R Yes ❑ No ❑ WA
(it not, attach a separate explanation sheet Please note that the Express program is not setup
to _handle any iy pe of deviation ft m the standard design.)
17. For each BMP in all high density projects, and low density curb outlet swale projects, the
Individual drainage area for each proposed BMP must be clearly delineated.
18. Any revisions made to the application as a result of this review may cause changes to the other
documentation. Plans, calculations, application, and supplements should be revi d r. y
necessary changes. For example, changing the orifice size will require a rnodifi tE I V E
calculations, the pond details on the plans, and page 1 of the supplement. D
Page 2 of 3 MAY 0 5 2008
PROJ # DWQ

nvd 0-1031
North Carolina Department of Environment and
Natural Resources
APIA. Request for Express Permit Review
NC'DENR
j For DENR Use ONLY
j Reviewar: G ..
Submit IT-_ 13
G 3v i,
j Timw
0&
3Z% n
FILL-IN all the information below and CHECK the Permif(s) you are requesting for express review. FAX or Email the completed form to Express
Coordinator along with a com Ieted WAI n ratfve site tan PDF file andvicin ma same items ex cted in the a licatian ck c
of the project location. Include this form in the epplica$ron package.
Asheville Region -Alison Davidson 828-296-4698;allsrr:.dav_idson&crnail.nat
• Fayetteville or Raleigh Region -David Lee 919-791-4203, david tee&r►crrtall.net
• Mooresville &-Patrkk Grogan 70"63-3772 or pAtn lr urarrarafti-mail net
• Washington Regran-Lyn Hardison 252-946.9215 or iynhardisongocniefi.net
■ Wilmington Region -Janet Russell 91 tl-3350-,2004 or (anet.rassellancrria "at
NC IE. Project application; raveive•.f alter 12170011 wiii he starrrped it the loltowilxl vvo:•k day
Project Name: County. NEW HANOVER
Applicant. ROBERT E HUCKABEE. III COMPa^y: CAPE FEAR iM ESTEMENT AND DEVELOPMENT. LL C
Address:1161 CASTig HAYNE ROAD, BUILDING B City. A1LMINGTON. State: NC Zip. 28401
Phone:[phone] Fm- - - Email: PAVERY(a)MCKINLEYBUILDING.COM E
Project is Drain:Sird s into Cwaters Project Located in CAPE FEAR River Basin
EngineerlConsultant: JAY CARMINE, PE Company: COASTAL LAND DESIGN, PLLC
Address: P.O. BOX 1172 City: WILMINGTON, State: NC Zip: 28402
Phone: [phone]-9333 Fax:: - _ Email, JCARMiNEiKOASTALLANDDESIGN NET
(Check all that apply)
C] Seoping Meeting ONLY 0 DV40,'D DCM. [I DLR, EJ OTHER:
0 Stream Odgin Determinatlon. 'L of stream calls - Please attach TOPQ map marking the areas in questions
C E I V E
D
MAY 0 5 2008
DWQ
PROJ #
Stale Stormwater F General El SFR, L]Bkhd & Bt Rmp, © Clear & Grub, E3 Utility
0 Low Density E] Low Density -Curb & Gutter _ #Carp Outlet Swales El Off -site (SW (Provide perm it
21 High Density -Detention Pond 14 reatment Sys tents LJ High Density -Infiltration __ #Treatment Systemc
El High Density -Bio-Retention _ _- # Treatment Systems n High Density -Constructive Wetlands _ n Treatment ystwns
[] High Density -Other # Tt�eatment ,Systems F MODIFI(;ATION SW 070319MOD iPr.*de permit T
Coastal Management Excavation & Fill [3 Bridges & Culverts C Structures Information
Upland Development Marina Development [ _i Urban Waterfront
Land. Quality EJ Erosion and Sedimentation Contr o± Plan --with Nacres to be d-Isturhed.'CK # _ � 4lc r DENR use))
WETLAND$ UESTIQNS MUST$F_ ADDRESSED BELOW
D Wetlands (40# Check all that appll
Wetlands one Site [,] Yes No
Wetlands Delineation has been completed: FI Yes] No
US ACOE Approval of Delineation completed: Ci Yes i _( I�n
404 Application in Process w! US ACOE: F1 Yes 0 No
Permit Received from, US ACOE; Fl. Yes 0 No
Isolatedwetland on Proper;-' (es [I Nei �-
Buffer Impacts: 0 No ❑ YES:.-_- _sere <}
Minor Variance: [] No YES
Major General Variance 2... No Cj YES
401 Application required: E]Yes CI No If YES, ! Regular
Perennial, Biue 14 stream, etc on site yes j-j ldo
i�ar O1FAIR use only
Fee lit for rrnu;~ti 1p a permlts: Check # }
Total Fee Amount S
i _ �! SUBMITTAL DATE!
SUBMITTAL DATES p�
�-------�—__.
CAMA
§�
VdfidirCB iNa ` Min
SW (I-] MD. C] J.D.rl 6en
�
401:
�-$ _
stream peters --
-

Narrative
5rrak,�' Cjg_,� L"Apfl�ln
This Stornwater desic gn is for an approximately 13.84 acre bUSIness park off of N.C. Highway 421 in Now
Hanover County. This project is is high density stormwater project tn,?,l uses storm St• sewers !o convey ' . . :,,-, .
)ouilio.,ilion is 382,41 isf whi0i wiij corv::_., 4 �j i:.1..,i(.,.;,��,, 1, 9,,., ;,ldt and :J� -c—t •"c,"
Ir Ar t ENR j
.!V,-. -u.)IT-evI -.),7 n­ is dosku!ed tof meet Liot NOD-f nn(I Nk.��,,
C'.
13
t•
", vie
ar 1, T. V"
and Lc,uii
1,,1J3, hVdr( V'. of 3r.,-1 D
tc� stornr.i Y'j;j to jjj,pond. This
--h -A is dlrv. ou -An.rds it boxes wi!O!+, all
wil! Jr
".,10 ;h il;!:.
'Y ILI ;Z, rli, t-
1%,Vf,-i4:j; :,,quirciiwo ts
"v t4 N%--bu- !NlRt�, @!uiyriii* 7Lz) wJl az, Nc.w i :ank,_,vai
d1n:11 !I(w"n t%lIc tij-4 I.F" of %4!nfv;l
within to five (5) days, The riser elevation is set at 16.00' which satisfies New Hanover COUP',v", I)f;',
f-, �Vhv.- ynar cvv!111 _,,ho
Of ivatvr) nr�,16'26' i, order F) I 1,C),f) 1-,ioirr! sil.1ply ihi 1� sk". �js F)P-1 Ne'vV H
5 vo v id w1A be !%-) If and isdesqnzirl
d
so that New Hajmver County s top of darn requirement could be met With the design conditions sei as
lasted acove. the conventional stormwatiar pond can sately route Vie I 00-y ear storm event.
-1 ` �'� , 4 �) - . Ww i C'OL1111-4y Vhti,. 1h,f:-t. %vt
events are iower than the pre -development discharge for the same storm -events. The pr,v,
discharge for this site for the jo-and 2-year starer events are 56Prz. I
fcr t:lhe c,ame thjc,i. stown
the post-Oi-, eel ipilor [lot gr—,t;
and '2'-yeas storm 1110,fs W%, 1-
. DECEIVED
AY 0 5 2008
DV40
PROJ #