SW8130412_Historical File_20130430

t®CDE
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Pat McCrory Charles Wakild, P. E. John Skvarla
Governor Director Secretary
April 30, 2013
Brad Brundage, Vice President
DR Horton, Inc.
4073 Belle Terre Blvd.
Myrtle Beach, SC 29579
Subject: Stormwater Permit No. SW8 130412
Hawkeswater at the River
High Density Subdivision Project
Brunswick County
Dear Mr. Brundage:
The Wilmington Regional Office received a complete Stormwater Management Permit Application
for Hawkeswater at the River on April 25, 2013. 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 130412, dated April 30, 2013, for the
construction of the subject project.
This permit shall be effective from the date of issuance until April 30, 2021, and shall be subject to
the conditions and limitations as specified therein. Please pay special attention to the conditions
listed in this permit regarding the Operation and Maintenance of the BMP(s), recordation of deed
restrictions, certification of the BMP's, procedures for changes of ownership, transferring the permit,
and renewing the permit. Failure to establish an adequate system for operation and maintenance of
the stormwater management system, to record deed restrictions, to certify the BMP's, to transfer the
permit, or to renew the permit, 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 by filing a written petition with the Office of Administrative
Hearings (OAH). The written petition must conform to Chapter 150B of the North Carolina General
Statutes, and must be filed with the OAH within thirty(30) days of receipt of this permit. You should
contact the OAH with all questions regarding the filing fee(if a filing fee is required) and/or the
details of the filing process at 6714 Mail Service Center, Raleigh, NC 27699-6714, or via telephone
at 919-431-3000, or visit their website at www.NCOAH.com. 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(910) 796-7215.
Sincerely, }
For CharlegWakild, P. E., Director
Division of Water Quality
GDS/csb: S:IWQS\Stormwater\Permits&Projects120131130412 HD12013 04 permit 130412
cc: Lawrence Gilman, P. E., Cape Fear Engineering, Inc.
Brunswick County Inspections
Brunswick County Engineering
Wilmington Regional Office
1617 Mail Service Center,Raleigh,North Carolina 27699-1617
Location:512 N.Salisbury St.Raleigh,North Carolina 27604
Phone:[phone]\FAX:[phone]
Internet www.ncwateroualitv.orq One
An Equal Opportunity 1 Affirmative Action Employer NorthCaroiina
Naturally

State Stormwater Management Systems
Permit No. SW8 130412
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
DR Horton, Inc.
Hawkeswater at the River
NC 133, Be/ville, Brunswick County
FOR THE
construction, operation and maintenance of ten (10) wet detention pond(s) in
compliance with the provisions of 15A NCAC 2H .1000 (hereafter referred to as the
"stormwater 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 April 30, 2021 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 1.5 on pages 3 and 4 of this permit. Phase I of the
subdivision is permitted for 351 lots; each allowed a maximum of 4,500 square
feet of built-upon area.
3. The runoff from all built-upon area within the permitted drainage area(s) of this
project must be directed into the permitted stormwater control system.
4. The tract will be limited to a maximum of 2,472,734 square feet of built-upon
area. The wet ponds designated and identified as shown in the tables in section
1.5 on pages 3 and 4 and have been designed to treat the runoff from the
impervious surfaces as illustrated in said table.
Page 2 of 10

State Stormwater Management Systems
Permit No. SW8 130412
5. The following design elements have been permitted for this wet detention pond
stormwater facility, and must be provided in the system at all times.
I Design Criteria Pond#1 Pond#2 Pond#3 Pond#1 Pond#2
Phase 1 Phase 1 Phase 1 Phase 3 Phase 3
a. Drainage Area,acres: 23.62 14.65 28.17 5.32 25.12
Onsite,ft2 1,028,887 638,154 1,227,085 231,739 1,001,128
Offsite,ft2 None None None None 93,070
b. Total Impervious 368,082 226,512 508,781 106,286 656,516
Surfaces,ft2
(1)Buildings 269,636 166,399 400,316 53,143 103,500
(2)Roads/Parking 98,446 60,113 108,465 53,143 39,621
(3)Sidewalk None None None None 3,547
(4)Future None None None None 509,848
c. Design Storm,inches 1 1 1 1 1
d. Pond Depth,feet 6 4 7 7 7
e. TSS removal 90 90 90 90 90
efficiency,%
f. Permanent Pool Elev., 14 17 14 12 13
FMSL
g. Perm.Pool Surface 23,813 21,561 21,893 8,379 26,592
Area,ft2
h. Permitted Storage 35,473 20,371 45,164 9,662 60,104
Volume,ft3
i. Temporary Storage
Elev.,FMSL 15.4 17.9 15.9 13.1 15
j. Controlling Orifice,"0
3 2 3 1.5 3
pipe
k. Permitted Forebay 11,283 5,026 10,573 2,178 16,574
Volume,
I. Receiving
Stream/River Basin Brunswick River/Cape Fear
m.Stream Index Number 1S_77
n. Classification of
Water Body SC
o. Max.fountain i
horsepower 1/3 1/6 1/3 1/8 1/3
Page 3 of 10

State Stormwater Management Systems
Permit No. SW8 130412
Design Criteria Pond#3 Pond#4 Pond#5 Pond#6 Pond#7
Phase 3 Phase 3 Phase 3 Phase 3 Phase 3
a. Drainage Area,acres: 0.97 5.68 9.08 9.33 4.43
Onsite,ft2 42,253 247,421 395,525 406,415 172,062
Offsite,ft2 None None None None 20,909
b. Total Impervious 23,958 131,987 207,346 124,146 87,120
Surfaces,ft2
(1)Buildings 10,454 60,984 97,139 65,340 61,855
(2)Roads/Parking 13,504 71,003 110,207 58,806 25,265
(3)Other None None None None None
(4)Offsite None None None None None
c. Design Storm,inches 1 1 1 1 1
d. Pond Depth,feet 4 4 7 5 5
e. TSS removal 90 90 90 90 90
efficiency,%
f. Permanent Pool Elev., 10 8 13 6 6
FMSL
g. Perm.Pool Surface 4,026 23,433 10,285 10,116 7,486
Area,ft2
h. Permitted Storage 4,379 24,427 22,944 22,698 8,437
Volume,ft3
I. Temporary Storage 10.5 8.5 14.6 7 6.9
Elev.,FMSL
J. Controlling Orifice,"0 1 1.5 1.5 1.5 1.5
pipe
I k. Permitted Forebay 8
VJ 1 I 5,900 I 5,116 I 5,89 1 I 2,625
Volume,fN
I. Receiving
Stream/River Basin Brunswick River/Cape Fear
m.Stream Index Number 18-77
n. Classification of
Water Body SC
o. Max.fountain 1/8 1/4 1/8 1/8 1/8
horsepower
II. SCHEDULE OF COMPLIANCE
1. 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 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.
Page 4 of 10

State Stormwater Management Systems
Permit No. SW8 130412
5. 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.
6. 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 development, subdivision, acquisition, or sale of any, 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.
7. The Director may determine that other revisions to the project should require a
modification to the permit.
8. 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
..„%ek.,,.Noel r I
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.
Page 5 of 10

State Stormwater Management Systems
Permit No. SW8 130412
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.
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 130412, 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 per lot is 4,500 square feet for Phase I.
Phases 2 and 3 shall be specified with a future stormwater permit
modidication. This allotted amount includes any built-upon area
constructed within the iot 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. 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.
h. 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.
Page 6 of 10

State Stormwater Management Systems
Permit No. SW8 130412
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 from the fountain must be centered in the pond, away from
the shoreline.
d. The maximum horsepower for the fountain's pump is based on the
permanent pool volume. The maximum pump power for a fountain in these
ponds can be found in Section 1.5 in the stormwater pond tables.
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 completed
"Name/Ownership Change Form" must be submitted to the Division of Water
Quality, signed by the parties involved, along with the appropriate documentation
as listed on page 2 of the form. 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.
Neither the sale of the project nor the transfer of common area to a third party
constitutes legal transfer of the stormwater permit.
3. Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of the permit.
4. 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.
5. 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.
6. 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.
7. 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.
8. The Permittee grants permission to staff of the DWQ to access the property for
the purposes of inspecting the stormwater facilities during normal business
hours.
9. The permittee shall notify the Division in writing of any name, ownership or
mailing address changes at least 30 days prior to making such changes.
Page 7 of 10

State Stormwater Management Systems
Permit No. SW8 130412
10. 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.
11. The permittee shall submit a permit renewal application request at least 180 days
prior to the expiration date of this permit. The renewal request must include the
appropriate documentation and the processing fee.
Permit issued this the 30th day of April, 2013.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
harle akild, '. ., Director
Division of Water Quality
By Authority of the Environmental Management Commission
Page 8 of 10

State Stormwater Management Systems
Permit No. SW8 130412
Hawkeswater at the River Page 1 of 2
Stormwater Permit No. SW8 130412
Brunswick County
Designer's Certification
!, , 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:
SEAL
Signature
Registration Number
Date
Page 9 of 10

State Stormwater Management Systems
Permit No. SW8 130412
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
Brunswick County Building Inspections
Page 10 of 10

DWQ USE ONLY
Date Received Fee Paid Permit Number
Applicable Rules: D Coastal SW-1995 ❑Coastal SW-2008 0 Ph II-Post Construction
(select all that apply) ❑Non-Coastal SW-HQW/ORW Waters 0 Universal Stormwater Management Plan
0 Other WQ Mgmt Plan:
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may be photocopied for use as an original
I. GENERAL INFORMATION
1. Project Name(subdivision,facility,or establishment name-should be consistent with project name on plans,
specifications,letters,operation and maintenance agreements,etc.):
Hawkeswater at the River
2. Location of Project(street address):
Approx.1.5 miles south on NC-133 from the intersection of US-17
City:Belville County:Brunswick Zip:28451
3. Directions to project(from nearest major intersection):
Approx.1.5 miles south on NC-133 from the intersection of US-17
4. Latitude:33°57'10"N Longitude:78°12'25"W of the main entrance to the project.
IL PERMIT INFORMATION:
1.a.Specify whether project is(check one): New [Modification ❑Renewal w/ Modificationt
tRenewals with modifications also requires SWU-102-Renewal Application Form
b.If this application is being submitted as the result of a modification to an existing permit,list the existing
permit number ,its issue date(if known) ,and the status of
construction: ❑Not Started ['Partially Completed* ❑Completed* *provide a designer's certification
2. Specify the type of project(check one):
['Low Density ®High Density ❑Drains to an Offsite Stormwater System ❑Other
3. If this application is being submitted as the result of a previously returned application or a letter from DWQ
requesting a state stormwater management permit application,list the stormwater project number,if
assigned, and the previous name of the project,if different than currently
proposed,
4.a.Additional Project Requirements(check applicable blanks;information on required state permits can be
obtained by contacting the Customer Service Center at 1-877-623-6748):
[LAMA Major ❑Sedimentation/Erosion Control:_ ac of Disturbed Area
❑NPDES Industrial Stormwater 0404/401 Permit:Proposed Impacts
b.If any of these permits have already been acquired please provide the Project Name,Project/Permit Number,
issue date and the type of each permit:
5. Is the project located within 5 miles of a public airport? ZNo ['Yes
If yes,see S.L.2012-200,Part VI:http://portal.ncdenr.org/web/wq/ws/su/statesw/rules laws
ECEIVEit:
APR 2 5 2013
Form SWU-101 Version 06Aug2012 Page 1 of 6
BY:

III. CONTACT INFORMATION
1.a.Print Applicant/ Signing Official's name and title(specifically the developer,property owner,lessee,
designated government official,individual,etc.who owns the project):
Applicant/Organization:DR Horton,Inc.
Signing Official&Title:Brad Brundage,Vice President and City Manager
b.Contact information for person listed in item la above:
Street Address:4073 Belle Terre Blvd
City:Myrtle Beach State:SC Zip:29579
Mailing Address(if applicable):
City: State: Zip:
Phone: f843 ) 646-2305 Fax: ( )
Email:bcbrundage@drhortoncom
c.Please check the appropriate box.The applicant listed above is:
®The property owner(Skip to Contact Information,item 3a)
❑Lessee*(Attach a copy of the lease agreement and complete Contact Information,item 2a and 2b below)
❑Purchaser*(Attach a copy of the pending sales agreement and complete Contact Information,item 2a and
2b below)
❑Developer*(Complete Contact Information,item 2a and 2b below.)
2.a.Print Property Owner's name and title below,if you are the lessee,purchaser or developer. (This is the
person who owns the property that the project is located on):
Property Owner/Organization:
Signing Official&Title:
b.Contact information for person listed in item 2a above:
Street Address:
City: State: Zip:
Mailing Address(if applicable):
City: State: Zip:
Phone: ( ) Fax: ( )
Email:
3.a. (Optional)Print the name and title of another contact such as the project's construction supervisor or other
person who can answer questions about the project:
Other Contact Person/Organization:
Signing Official&Title:
b.Contact information for person listed in item 3a above:
Mailing Address: Ectems--
iv
City: State: Zip:_
APR 2 5 2013
Form SWU-101 Version 06Aug2012 Page 2 of 7
nay,

Phone: ( ) Fax: ( )
Email:
4. Local jurisdiction for building permits:Brunswick County
Point of Contact: Phone#: (910 ) 253-2050
IV. PROJECT INFORMATION
1. In the space provided below,briefly summarize how the stormwater runoff will be treated.
Stormwater will be treated with wet detention basins
2.a.If claiming vested rights,identify the supporting documents provided and the date they were approved:
❑Approval of a Site Specific Development Plan or PUD Approval Date:
El Valid Building Permit Issued Date:
®Other: Approved Permit(SW8060354) Date:9/9/08
b.If claiming vested rights,identify the regulation(s)the project has been designed in accordance with:
®Coastal SW-1995 ❑Ph II-Post Construction
3. Stormwater runoff from this project drains to the Cape Fear River basin.
4. Total Property Area:166.24 acres 5. Total Coastal Wetlands Area:n/a acres
6. Total Surface Water Area: acres
7. Total Property Area(4)-Total Coastal Wetlands Area(5)-Total Surface Water Area(6)=Total Project
Area+:166.24 acres
+ Total project area shall be calculated to exclude the following: the normal pool of impounded structures, the area
between the banks of streams and rivers, the area below the Normal High Water(NH►V)line or Mean High Water
(MHW)line,and coastal wetlands landward from the NHW(or MHIM line. The resultant project area is used to
calculate overall percent built upon area(B ). Non-coastal wetlands landward of the NHW(or MHVV)line may
be included in the total project area.
8. Project percent of impervious area:(Total Impervious Area/Total Project Area)X 100 =43 %
9. How many drainage areas does the project have?10(For high density,count 1 for each proposed engineered
stormwater BMP. For low density and other projects,use 1 for the whole property area)
10. Complete the following information for each drainage area identified in Project Information item 9. If there
are more than four drainage areas in the project,attach an additional sheet with the information for each area
provided in the same format as below.
•
r� ' CEIVE
APR 2 5 2013
Form SWU-101 Version 06Aug2012 Page 3 of 7
BY:

Basin Information Drainage Area_ Drainage Area Drainage Area Drainage Area_
Receiving Stream Name See Attached
Stream Class *
Stream Index Number*
Total Drainage Area(sf)
On-site Drainage Area(sf)
Off-site Drainage Area(sf)
Proposed Impervious Area(sf)
% Impervious Area"(total)
Impervious'Surface Area Drainage Area_ Drainage Area_ Drainage Area Drainage Area_
On-site Buildings/Lots(sf)
On-site Streets (sf)
On-site Parking (sf)
On-site Sidewalks (sf)
Other on-site (sf)
Future(sf)
Off-site (sf)
Existing BUA***(sf)
Total (sf):
* Stream Class and Index Number can be determined at: http://portal.ncdenr.org/web/wq/ps/csu/classifications
** Impervious area is defined as the built upon area including,but not limited to,buildings,roads,parking areas,
sidewalks,gravel areas,etc.
***Report only that amount of existing BUA that will remain after development.Do not report any existing BLIA that
is to be removed and which will be replaced by new BLIA.
11. How was the off-site impervious area listed above determined?Provide documentation.N/A
Proiects in Union County: Contact DWQ Central Office staff to check if the project is located within a Threatened&
Endangered Species watershed that may be subject to more stringent stormwater requirements as per 15,4 NCAC 02B.0600.
V. SUPPLEMENT AND O&M FORMS
The applicable state stormwater management permit supplement and operation and maintenance(O&M)forms
must be submitted for each BMP specified for this project. The latest versions of the forms can be downloaded
from http://portal.ncdenr.org/web/wq/ws/su/bmp-manual.
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. A detailed application instruction sheet and BMP
checklists are available from http://portal.ncdenr.org/web/wq/ws/su/statesw/forms docs. The complete
application package should be submitted to the appropriate DWQ Office. (The appropriate office may be
found by locating project on the interactive online map at http://portal.ncdenr.org/web/wq/ws/su/maps.)
Please indicate that the following required information have been provided by initialing in the space provided
for each item.All original documents MUST be signed and initialed in blue ink. Download the latest versions
for each submitted application package from http://portal.ncdenr.org/web/wq/ws/su/statesw/forms docs.
1. Original and one copy of the Stormwater Management Permit Application Form.
2. Original and one copy of the signed and notarized Deed Restrictions&Protective Covenants
Form. (if required as per Part VII below)
3. Original of the applicable Supplement Form(s) (sealed,signed and dated)and O&M
agreement(s)for each BMP.
4. Permit application processing fee of$505 payable to NCDENR. (For an Express review,refer to tv c1 ic
http://www.envhelp.org/pages/onestopexpress.html for information on the Express program
and the associated fees. Contact the appropriate regional office Express Permit Coordinator for
additional information and to schedule the required application meeting.)
APR 2 5 2013
Form SWU-101 Version 06Aug2012 Page 4 of 7
BY:

Basin Information #I : Phase 1 Pond 1
Receiving Stream Name Brunswick River
Receiving Stream Class SC 18-77
Drainage Basin Area I ,028,887
Existing Impervious*Area -
Proposed Impervious*Area 368,082
%Impervious*Area(total) 36% i
Impervious* Surface Area #I : Phase I Pond 1
On-site Buildings 269,636
On-site Streets 98,446
On-site Parking -
On-site Sidewalks -
Other on-site -
Future(Reserve) -
Total: 368,082
Basin Information #2: Phase I Pond 2
Receiving Stream Name Brunswick River
Receiving Stream Class SC 18-77
Drainage Basin Area 638, 154
Existing Impervious*Area -
Proposed Impervious*Area 226,512
%Impervious*Area(total) 35%
Impervious*Surface Area I #2: Phase I Pond 2 1
On-site Buildings 166,399
On-site Streets 60,113
On-site Parking
On-site Sidewalks -
Other on-site -
Future(Reserve) -
Total: 266,512
Basin Information #3: Phase I Pond 3
Receiving Stream Name Brunswick River
Receiving Stream Class SC 18-77
Drainage Basin Area 1 ,227,085
Existing Impervious*Area -
Proposed Impervious*Area 508,78 I
%Impervious*Area(total) 4 I%
Impervious* Surface Area #3: Phase I Pond 3
On-site Buildings 400,316
On-site Streets 108,465
On-site Parking -
On-site Sidewalks -
1 Other on-site
Future(Reserve)
Total: I 508,781
)ECEVEi.:;
APR 252013 U
BY:

Basin Information #4: Phase 3 Pond 1
Receiving Stream Name Brunswick River
Receiving Stream Class SC 18-77
Drainage Basin Area 231 .739
Existing Impervious*Area -
Proposed Impervious*Area 106,286
%Impervious*Area(total) 46%
Impervious* Surface Area #4: Phase 3 Pond I
On-site Buildings 53,143
On-site Streets 53,143
On-site Parking -
On-site Sidewalks -
Other on-site -
Future(Reserve) -
Total: 106,286
Basin Information #5: Phase 3 Pond 2
Receiving Stream Name Brunswick River
Receiving Stream Class SC 18-77
Total Drainage Basin Area 1 ,094, 198
Onsite Drainage Area 1 ,001 , 128
Offsite Drainage Area 93,070
Existing Impervious*Area -
Proposed Impervious*Area 656,5 16
%Impervious*Area(total) 60%
Impervious* Surface Area #5: Phase 3 Pond 2
On-site Buildings 103,500
On-site Streets 39,62 I
On-site Parking -
On-site Sidewalks 3,547
Other on-site -
Future(PHASE 2 AREA) 509,848
Total: 656,516
Basin Information #6: Phase 3 Pond 3
Receiving Stream Name Brunswick River
Receiving Stream Class SC 18-77
Drainage Basin Area 42,253
Existing Impervious*Area -
Proposed Impervious*Area 23,958
%Impervious*Area(total) 57%
Impervious* Surface Area #6: Phase 3 Pond 3
On-site Buildings 10,454
On-site Streets 13,504
On-site Parking -
On-site Sidewalks I
Other on-site -
Future(Reserve) -
Total: 23,958 ;' C E1VE
11 APR 2 5 2013
BY:

Basin Information #7: Phase 3 Pond 4
Receiving Stream Name Brunswick River
Receiving Stream Class 5C 18-77
Drainage Basin Area 247,421
Existing Impervious*Area -
Proposed Impervious*Area 131 ,987
%Impervious*Area(total) 54%
Impervious*Surface Area _ #7: Phase 3 Pond 4
On-site Buildings _� 69,984
On-site Streets 71,003
On-site Parking -
On-site Sidewalks -
Other on-site -
Future(Reserve) -
Total: 131 ,987
Basin Information #8: Phase 3 Pond 5
Receiving Stream Name Brunswick River
Receiving Stream Class SC 18-77
Drainage Basin Area 395,525
Existing Impervious*Area -
Proposed Impervious*Area 207,346
%Impervious*Area(total) 53%
Impervious*Surface Area 1 #8: Phase 3 Pond 5
On-site Buildings 97,139
On-site Streets 110,207
On-site Parking -
On-site Sidewalks -
Other on-site -
Future(Reserve)
Total: 207,346
Basin Information #9: Phase 3 Pond 6
Receiving Stream Name Brunswick River
Receiving Stream Class SC 18-77
Drainage Basin Area 406,415
Existing Impervious*Area -
Proposed Impervious*Area 1 24, 146
%Impervious*Area(total) 3 I%
Impervious*Surface Area #9: Phase 3 Pond 6
On-site Buildings 65,340
On-site Streets 58,806
On-site Parking -
On-site Sidewalks
Other on-site -
I Future(Reserve) -
1 24
Total: 124, 146
ECE1VE?
APR 2 5 2013 17)
BY:

Basin Information #10: Phase 3 Pond 7
Receiving Stream Name Brunswick River
Receiving Stream Class 5C 18-77
Total Drainage Basin Area 192,971
Onsite Drainage Area 172,062
Offsite Drainage Area 20,909
Existing Impervious*Area -
Proposed Impervious*Area 87,120
%Impervious*Area(total) 45.2%
Impervious* Surface Area #10: Phase 3 Pond 7
On-site Buildings 58,054
On-site Streets 29,066
On-site Parking -
On-site Sidewalks -
Other on-site
Future(Reserve) -
Total: 87,120
lECEIV E
i)
APR 2 5 2013
BY:

5. A detailed narrative(one to two pages) describing the stormwater treatment/managementfor 11ht
the project. This is required in addition to the brief summary provided in the Project
Information,item 1.
6. A USGS map identifying the site location. If the receiving stream is reported as class SA or the I".11-k
receiving stream drains to class SA waters within 1/2 mile of the site boundary,include the 1/2
mile radius on the map.
pea"1 ?
7. Sealed,signed and dated calculations(one copy). NVTIA
8. Two sets of plans folded to 8.5"x 14" (sealed,signed,&dated),including: {,.
a. Development/Project name.
b. Engineer and firm.
c. Location map with named streets and NCSR numbers.
d. Legend.
e. North arrow.
f. Scale.
g. Revision number and dates.
h. Identify all surface waters on the plans by delineating the normal pool elevation of
impounded structures,the banks of streams and rivers,the MHW or NHW line of tidal
waters,and any coastal wetlands landward of the MHW or NHW lines.
• Delineate the vegetated buffer landward from the normal pool elevation of impounded
structures,the banks of streams or rivers,and the MHW(or NHW)of tidal waters.
i. Dimensioned property/project boundary with bearings&distances.
j. Site Layout with all BUA identified and dimensioned.
k. Existing contours,proposed contours,spot elevations,finished floor elevations.
L Details of roads,drainage features,collection systems,and stormwater control measures.
m.Wetlands delineated,or a note on the plans that none exist. (Must be delineated by a
qualified person. Provide documentation of qualifications and identify the person who
made the determination on the plans.
n. Existing drainage(including off-site),drainage easements,pipe sizes,runoff calculations.
o. Drainage areas delineated(included in the main set of plans,not as a separate document).
p. Vegetated buffers(where required).
9. Copy of any applicable soils report with the associated SHWT elevations(Please identify
elevations in addition to depths)as well as a map of the boring locations with the existing
elevations and boring logs.Include an 8.5"x11"copy of the NRCS County Soils map with the
project area clearly delineated. For projects with infiltration BMPs,the report should also
include the soil type,expected infiltration rate,and the method of determining the infiltration rate.
(Infiltration Devices submitted to WiRO:Schedule a site visit for DWQ to verify the SHWT prior
to submittal, [phone].)
10. A copy of the most current property deed.Deed book: 3ss4- Page No: S t d M'f'1.1
11. For corporations and limited liability corporations(LLC):Provide documentation from the NC Wert}
Secretary of State or other official documentation,which supports the titles and positions held
by the persons listed in Contact Information,item 1a,2a,and/or 3a per 15A NCAC 2H.1003(e).
The corporation or LLC must be listed as an active corporation in good standing with the NC
Secretary of State,otherwise the application will be returned.
http://www.secretary.state.nc.us/Corporations/CSearch.aspx
VII. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
For all subdivisions,outparcels,and future development,the appropriate property restrictions and protective
covenants are required to be recorded prior to the sale of any lot. If lot sizes vary significantly or the proposed
BUA allocations vary,a table listing each lot number,lot size,and the allowable built-upon area must be provided
as an attachment to the completed and notarized deed restriction form. The appropriate deed restrictions and
protective covenants forms can be downloaded from
http://portal.ncdenr.org/web/wq/ws/su/statesw/forms does.Download the latest versions for each submittal.
In the instances where the applicant is different than the property owner,it is the responsibility of the property
owner to sign the deed restrictions and protective covenants form while the applicant is responsible for ensuring
that the deed restrictions are recorded.
By the notarized signature(s)below,the permit holder(s)certify that the recorded property restrictions and
protective covenants for this project,if required,shall include all the items required in the permit and listed
on the forms available on the website,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 NC DWQ,and that they will be recorded prior to the sale of aIy
APR 2 5 2013
Form SWU-101 Version 06Aug20 12 Page 5 of 7 I
BY:

VIII. CONSULTANT INFORMATION AND AUTHORIZATION
Applicant: Complete this section if you wish to designate authority to another individual and/or firm(such as a
consulting engineer and/or firm)so that they may provide information on your behalf for this project(such as
addressing requests for additional information).
Consulting Engineer:Matthew Haley,P.E.
Consulting Firm:Cape Fear Engineering,Inc
Mailing Address:151 Poole Road,Suite 100
City:Belville State:NC Zip:28451
Phone: (910 ) 383-1044 Fax: (910 ) 383-1045
Email:[e-mail]
IX. PROPERTY OWNER AUTHORIZATION(if Contact Information,item 2 has been filled out,complete this
section)
I, (print or type name of person listed in Contact Information, item 2a) ,certify that I
own the property identified in this permit application,and thus give permission to (print or type name of person
Iisted in Contact Information,item 1a) with(print or type name of organization listed in
Contact Information,item la) to develop the project as currently proposed. A copy of
the lease agreement or pending property sales contract has been provided with the submittal,which indicates the
party responsible for the operation and maintenance of the stormwater system.
As the legal property owner I acknowledge,understand,and agree by my signature below,that if my designated
agent(entity listed in Contact Information,item 1)dissolves their company and/or cancels or defaults on their
lease agreement,or pending sale,responsibility for compliance with the DWQ Stormwater permit reverts back to
me,the property owner.As the property owner,it is my responsibility to notify DWQ immediately and submit a
completed Name/Ownership Change Form within 30 days;otherwise I will be operating a stormwater treatment
facility without a valid permit. I understand that the operation of a stormwater treatment facility without a valid
permit is a violation of NC General Statue 143-215.1 and may result in appropriate enforcement action including
the assessment of civil penalties of up to$25,000 per day,pursuant to NCGS 143-215.6.
Signature: Date:
I, ,a Notary Public for the State of ,County of
,do hereby certify that personally appeared
before me this_day of ,and acknowledge the due execution of the application for
a stormwater permit. Witness my hand and official seal,
SEAL
My commission expires
1ECEIVE)
APR 2 5 2013 li
Form SWU-101 Version 06Aug2012 Page 6 of 7 BY:

X. APPLICANT'S CERTIFICATION
I, (print or type name of person listed in Contact Information,item la)Brad Brundage
certify that the information included on this permit 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 protective covenants will be recorded,and that the proposed project complies with the requirements of the
applicable stormwater rules under 15A NCA 2H.1000 and any other applicable state stormwater� requirements.
Signature: a/1 ,t /
' Date: / -a (' /3
I, T 5CQTI *Aohlatit. ,a Notary Public for the State of 11I2.' l CCM Dl11'1Ii,County of
(I.V$i,.&I►tit ,do hereby certify that 43YQ.A eruy4QLtt. personally appeared
before me this Z4 day of Apr,I ,213 ,and a o ledge ue executi. of the application for
a stormwater permit. Witness my hand and official seal,
//
,0 1KI VA.,. SEAL
, ........ • y,_
E
4su B LA° ?•` My commission expires 3.41-41
.....
' Novi41
i '('�\��\�
f f�111l111I1111111\�\\\
APR 2 5 2013
Form SWU-101 Version 06Aug2012 Page 7 of 7 BY:

Permit Number:
/moor '
(to be provided by DWQ)
Drainage Area Number:*-1: P 3 Pn 00 4-
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 present. 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.
Vegetation is too short or too Maintain vegetation at a height of
long. approximately six inches.
E
Form SW401-Wet Detention Basin O&M-Rev.4 Page 1 of 4
2 APR 5 2013
RV.

Permit Number:
(to be provided by DWQ)
Drainage Area Number: '1: 'p 3 p'p 4,
BMP element: Potential problem: How I will remediate the problem:
The inlet device: pipe or The pipe is clogged. Unclog the pipe. Dispose of the
swale 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 sheit 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 spraying.
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 growth.
Cattails,phragmites or other Remove the plants by wiping them
invasive plants cover 50% of I with pesticide(do not spray).
I the basin surface. I J
Y APR 2 5 2O3
Form SW401-Wet Detention Basin O&M-Rev.4 Page 2 of 4
BY:

Permit Number:
(to be provided by DWQ)
Drainage Area Number:*'l; ?also 4.
BMP element: Potential problem: How I will remediate the problem:
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. (if applicable)
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 3.0 feet in the main pond, the sediment
shall be removed.
When the permanent pool depth reads 2.25 feet in the forebay,the sediment
shall be removed.
BASIN DIAGRAM
(fill in the blanks)
Permanent Pool Elevation 8_0
Sediment Removal .5.75* —157e P 1
144.471
Valium Sediment Removal Elevation 5.0* 157•
Valium
Bottom Elevatio 5.0* 2670 t
meat Bottom Elevation 4.0* 257..
Sit
IStercese
FOREBA Y MAIN POND
•JJ•d.,ra wl N
.
APR 2 5 2033
* M aaiGtAu- t petz&A.t-r eD u AL Sf.1b 04,0ss qr
Form SW401-Wet Detention Basin O&M-Rev.4 Page 3 of 4

Permit Number:
(to be provided by DWQ)
I acknowledge and agree by my signature below that I am responsible for the
performance of the maintenance procedures listed above. I agree to notify DWQ of any
problems with the system or prior to any changes to the system or responsible party.
Project name:Hawkeswater at the River
BMP drainage area number:#7: Phase 3 Pond 4
Print name:Brad Brundage
Title:Vice President and City Manager
Address:4073 Belle Terre Blvd,Myrtle Beach, SC 29579
Phone:[phone]
Signature:
Date: t/-21"- 13
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, )I. Sco1* %vD' eIsjJt_. , a Notary Public for the State of
NiD�` 1 Ct ro , County of brim Suva. , do hereby certify that
bra 1 rwidgfiG personally appeared before me this 24
day of 4py'J , 2D13 , and acknowledge the due execution of the
forgoing w t detention basin maintenance requirements. Witness my hand and official
seal, 4144*
.�apTAgY
. 'Wows
SEAL
My commission expires 3—21-11
APR 2 5 2013
Form SW401-Wet Detention Basin O&M-Rev.4 Page 4 of 4

Permit Number: ` 7 /2
(to be provided by DWQ)
Drainage Area Numberr#9 ; P(k 3 Tbuo
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 171 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 present. 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.
Vegetation is too short or too Maintain vegetation at a height of
long. approximately six inches.
Form SW401-Wet Detention Basin O&M-Rev.4 111 APR 2 5 2033 ' Page 1 of 4
�

Permit Number:
(to be provided by DWQ)
Drainage Area Number:'; ft}3 fl,ND (o
BMP element: Potential problem: How I will remediate the problem:
The inlet device: pipe or The pipe is clogged. Unclog the pipe. Dispose of the
swale 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.
i he 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 spraying.
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 growth.
Cattails,phragmites or other I Remove the plants by wiping them
invasive plant,cover 50% of I with pesticide(do not spray).
the basin surface. I i
nECEIVE,i)
Form SW401-Wet Detention Basin O&M-Rev.4 Page 2 of 4
4
BY:

Permit Number:
(to be provided by DWQ)
Drainage Area Number:1 S Pb+LSD (p
BMP element: Potential problem: How I will remediate the problem:
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. (if applicable)
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 sucl,
that it will give an accurate depth reading and not readily penetrate into
accumulated sediments.
When the permanent pool depth reads 3.75 feet in the main pond,the
sediment shall be removed.
When the permanent pool depth reads 3.0 feet in the forebay,the sediment
shall be removed.
BASIN DIAGRAM
(fill in the blanks)
0 Permanent Pool Elevation 6.0
Sediment Removal .3.0* 1Gab.1 P 1
Volume Sediment Removal Elevation 2.25* 'l57. Volume
Bottom Elevatio 2.0* z.57,1 25�.
Scdhn nt Bottom Elevation 1.0*
Storage Freelintest
Stamm.
FOREBAY MAIN POND _
11
APR 252:,:3 ij
RV-
* itscs ocitakN .
Form SW401-Wet Detention Basin O&M-Rev.4 Page 3 of 4

Permit Number:
(to be provided by DWQ)
I acknowledge and agree by my signature below that I am responsible for the
performance of the maintenance procedures listed above. I agree to notify DWQ of any
problems with the system or prior to any changes to the system or responsible party.
Project name:Hawkeswater at the River
BMP drainage area number:#9: Phase 3 Pond 6
Print name:Brad Brundage
Title:Vice President and City Manager
Address:4073 Belle Terre Blvd, Myrtle Beach, SC 29579
Phone:[phone]
Signature: (.
Date: _a y r 3
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 Ste- ) 14'ii b , a Notary Public for the State of
NfOA,714 pil/ , , Coun of &Y/,cf3WIGt , do hereby certify that
6f2J F/14F) C. personally appeared before me this 2
day of 4114
I , Zn13 , and acknowledge the due execution of the
forgoing a detentio basin mainte ance requirements. Witness my hand and official
seal,
r
0Nllu1111"/
aick
plARy
_ •
b
/‘;>Pus‘
'yANCOR'
SEAL
My commission expires 3-24-I I—
Form SW401-Wet Detention Basin O&M-Rev.4 APR 2 5 2A Page 4 of 4
BY:

Permit No. `j:'1),4JI�---
(to be provided by DWQ)
oapF WATF4,QG
�� y r
,■_D_f\ N
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 Ill)must be printed,filled out and submitted along with all of the required information.
Project name HAWKESWATER AT THE RIVER
Contact person MATTHEW HALEY,PE
Phone number 910-383-1044
Date 4/24/2013
Drainage area number #7:PHASE 3 POND 4
re.OESIGINIFORIKTICII
Site Characteristics
Drainage area 247,421 ft2 * INSDIGYCE—S ` kikr VAUje 1.4As
Impervious area,post-development 131,987 ft2 WM. Red 1, °V- aERav-"i lec,
rious 53 in
Design rainfall depth 1.0 in —site 1' CW4evKAL EtIOAtrTINS4
Storage Volume: Non-SA Waters
Minimum volume required 11,052 ft3
Volume omvided 24,497 f:3
OK,volume provided is equal to or in excess of volume required.
Storage Volume: SA Waters
1.5"runoff volume ft3
Pre-development 1-yr,24-hr runoff ft3
Post-development 1-yr,24-hr runoff ft3
Minimum volume required ft3
Volume provided ft3
Peak Flow Calculations
Is the pre/post control of the 1yr 24hr storm peak flow required? N (Y or N)
1-yr,24-hr rainfall depth irr
Rational C,pre-development (unitless)
Rational C,post-development (unilless)
Rainfall intensity:1-yr,24-hr storm in/hr
Pre-development 1-yr,24-hr peak flow ft3/sec
Post-development 1-yr,24-hr peak flow ft3/sec
Pre/Post 1-yr,24-hr peak flow control ft3/sec
Elevations
Temporary pool elevation 8.50 frnsl
Permanent pool elevation 8,00 fmsl
SHWT elevation(approx.at the perm.pool elevation) *fmsl
Top of 10ft vegetated shelf elevation 8.00 fmsl
Bottom of 10ft vegetated shelf elevation 7.00 fmsl
Sediment cleanout,top elevation(bottom of pond) 5.00 fmsl
Sediment cleanout,bottom elevation 4.00 fmsl
Sediment storage provided 1.00 ft
Is there additional volume stored above the state-required temp.pool? Y (Y or N)
Elevation of the top of the additional volume 8.5 fmsl OK
ErV
APR 252013 I)
Form SW401-Wet Detention Basin-Rev.9-4/1a/12 Parts I.&II.Design Summary,Page 1 of 2
BY:

Permit No.
(to be provided by DWQ)
Surface Areas
Area,temporary pool *ft2
Area REQUIRED,permanent pool 11,629 ft2
SA/DA ratio 4.70(unitless)
Area PROVIDED,permanent pool,Apo„„_000l 24,433 ft2 OK
Area,bottom of 10ft vegetated shelf,Aiouhe * ft2
Area,sediment cleanout,top elevation(bottom of pond),A ot_po„d * ft2
Volumes
Volume,temporary pool 24,427 ft3 OK
Volume,permanent pool,Vo,o,„,001 63,B49 ft3
Volume,forebay(sum of forebays if more than one forebay) 5,900 ft3
Forebay%of permanent pool volume 9.2% % Insufficient forebay voltll E. clield.pez.Arvreo
SA/DA Table Data
Design TSS removal 90%
Coastal SA/DA Table Used? Y (Y or N)
Mountain/Piedmont SA/DA Table Used? N (Y or N)
SA/DA ratio _ 4.70(unitless)
Average depth(used in SA/DA table):
Calculation option 1 used?(See Figure 10-2b) (Y or N)
Volume,permanent pool,Voon„,001 63,829 ft3
Area provided,permanent pool,Apo,„ y 24,433 ft2
Average depth calculated ft Need 3 ft min.
Average depth used in SA/DA,do,,(Round to nearest 0.5ft) ft
Calculation option 2 used?(See Figure 10-2b) * (Y or N)
Area provided,permanent pool,A„,„,,, , , 24,433 ft2
Area,bottom of 10ft vegetated shelf,Ay,ohelf * ft2
Area,sediment cleanout,top elevation(bottom of pond),Armond * ft2
"Depth"(distance b/w bottom of 10ft shelf and top of sediment) 2.00 ft
Average depth calculated ft
Average depth used in SA/DA,day,(Round to down to nearest 0.5ft) ft
Drawdown Calculations
Drawdown through orifice? Y (Y or N)
Diameter of orifice(if circular) 1.50 in
Area of orifice(if-non-circular) in2
Coefficient of discharge(Co) 0.60(unitless)
Driving head(Ho) 0.22 ft
Drawdown through weir? N (Y or N)
Weir type (unitless)
Coeffldent of discharge(Cv) (unitless)
Length of weir(L) ft
Driving head(H) ft
Pre-development 1-yr,24-hr peak flow ft3Isec
Post-development 1-yr,24-hr peak flow ft2/sec
Storage volume discharge rate(through discharge orifice or weir) 0.03 ft3/sec -Storage volume discharge rate greater than pre-dev.1yr24hr.
Storage volume drawdown time 4.62 days OK,draws down in 2-5 days.
Additional Information
Vegetated side slopes 3 :1 OK
Vegetated shelf slope 10 :1 OK
Vegetated shelf width 10.0 ft OK
Length of flowpath to width ratio >3 :1 OK
Length to width ratio >1.5 :1 OK
Trash rack for overflow&orifice? Y (Y or N) OK
Freeboard provided ft
Vegetated filter provided? N (Y or N) OK
Recorded drainage easement provided? Y (Y or N) OK
Capures all runoff at ultimate build-out? Y (Y or N) OK
Drain mechanism for maintenance or emergencies is: PORTABLE PUMP
4
Form SW401-Wet Detention Basin-Rev.9-4/1a/12 i APR 2 5 2013 Parts I.&II.Design Summary,Page 2 of 2
BY:

Permit No.
(to be provided by DWQ)
PA 3 —IPot41 -4 4-
..Y
•. es a''If- ism Yiit !`'.s -
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 appiicant has designated an agent,the agent may initial below. If a
requirement has not been met,attach justification.
Pagel Plan
Initials Sheet No.
prrai SGJ't 1. Plans(1"-50'or larger)of the entire site showing:
SGJ-2- -Design at ultimate build-out,
56z_5 -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.
M'n-4 P' 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.
My 4 ''"s 3. Section view of the wet detention basin(1"- 20'or larger)showing:
-Side slopes,3:1 or lower,
-Pretreatment and treatment areas,and
-Inlet and outlet structures.
M-n 4 td 1A 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.
CAuS 5.A table of elevations,areas,incremental volumes&accumulated volumes for overall pond and for forebay,
to verify volume provided.
11ArtY N,k 6. A construction sequence that shows how the wet detention basin will be protected from sediment until the
entire drainage area is stabilized.
Mn{ 1,14cLuDia 7. The supporting calculations.
NtTE4 tNaluoEt 8.A copy of the signed and notarized operation and maintenance(O&M)agreement
fkivnl t p. 9.A copy of the deed restrictions(if required).
Mvti fJ/4 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 �D 1
C "tNETt�dF 1 otiIGUJ .Pgzt,tt-t--rtg4
t C E IV °N..
1
APR 2 5 2013
Form SW401-Wet Detention Basin-Rev.9-4/18/12 Part Ill.Required Items Checklist,Page 1 of 1
BY: . _

Permit No. JL�61.0/.30%/2---
(to be provided by DWQ)
AVAOl* ATF977
NCDENR - - -o
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.
it PPLUECTIFORIMICIIII
Project name HAWKESWATER AT THE RIVER
Contact person MATTHEW HALEY,PE
Phone number 910-383-1044
Date 4/24/2013
Drainage area number #9:PHASE 3 POND 6
I.team
Site Characteristics
Drainage area 406,415 ft2 % CArrwS 1AVIcr VAL).* S
Impervious area,post-development 124,146 ft2 ikler` 1 i, COX geibriVir,
%impervious 30.55
Design rainfall depth 1.0 in -rive r �ou'yk.,_ ftuA>SRNC,A
Storage Volume: Non-SA Waters
Minimum volume required 11,143 ft3
Volume provided 22.698 ft3K,volume provided is equal to or in excess of volume required.
Storage Volume: SA Waters
1.5"runoff volume ft3
Pre-development 1-yr,24-hr runoff
Post-development 1-yr,24-hr runoff ft3
Minimum volume required ft3
Volume provided ft3
Peak Flow Calculations
Is the pre/post control of the 1yr 24hr storm peak flow required? N (Y or N)
1-yr,24-hr rainfall depth In
Rational C,pre-development (unitiess)
Rational C,post-development (unitless)
Rainfall intensity:1-yr,24-hr storm in/hr
Pre-development 1-yr,24-hr peak flow ft3/sec
Post-development 1-yr,24-hr peak flow ft3/sec
Pre/Post 1-yr,24-hr peak flow control ft3/sec
Elevations
Temporary pool elevation 7.00 fins!
Permanent pool elevation 6.00 fmsl
SHWT elevation(approx.at the perm.pool elevation) *fmsl
Top of 10ft vegetated shelf elevation 6.00 fmsl
Bottom of 10ft vegetated shelf elevation 5.00 fins!
Sediment cleanout,top elevation(bottom of pond) 2.25 fmsl
Sediment cleanout,bottom elevation 1.00 fmsl
Sediment storage provided 1.25 ft
Is there additional volume stored above the state-required temp.pool? Y (Y or N)
Elevation of the top of the additional volume 7.0 fmsl OK
CEIVET)
APR 2 5 2013
Fonn SW401-Wet Detention Basin-Rev.9-4/18/12 Parts I.&II.Design Summary,Page 1 of 2
BY:

Permit No.
(to be provided by DWQ)
seraturaisanag
Surface Areas
Area,temporary pool *ft
Area REQUIRED,permanent pool 9,185 ft2
SA/DA ratio 2.26(unitess)
Area PROVIDED,permanent pool,A,,,,,,„,001 10,116 ft2 OK
Area,bottom of 10ft vegetated shelf,Abm*he f ft2
Area,sediment deanout,top elevation(bottom of pond),Aytpo,d ft2
Volumes
Volume,temporary pool 22,698 ft3 OK
Volume,permanent pool,Vi,,,,, 26,742 ft3
Volume,forebay(sum of forebays if more than one forebay) 5,891 ft3
Forebay%of permanent pool volume 22.0%% Insufficient forebay volume. t1TEP
SAIDA Table Data
Design TSS removal 90%
Coastal SA/DA Table Used? Y (Y or N)
Mountain/Piedmont SA/DA Table Used? N (Y or N)
SA/DA ratio 2.26(unifless)
Average depth(used in SA/DA table):
Calculation option 1 used?(See Figure 10-2b) * (Y or N)
Volume,permanent pool,VP„„_,,,,, 26,742 ft3
Area provided,permanent pool,AP,„, , 10,116 ft2
Average depth calculated ft Need 3 ft min.
Average depth used in SAIDA,da„(Round to nearest 0.5ft) ft
Calculation option 2 used?(See Figure 10-2b) * (Y or N)
Area provided,permanent pool,A,,,,,, 10,116 ft2
Area,bottom of 10ft vegetated shelf,Ahd t„r ft2
Area,sediment cleanout,top elevation(bottom of pond),AbaLpo„d * ft2
"Depth"(distance b/w bottom of 10ft shelf and top of sediment) 2.75 ft
Average depth calculated ft
Average depth used in SA/DA,da (Round to down to nearest 0.5ft) ft
Drawdown Calculations
Drawdown through orifice? Y (Y or N)
Diameter of orifice(if circular) 1.50 in
Area of orifice(if-non-circular) in2
Coefficient of discharge(Co) 0.60(unifless)
Driving head(Ho) 0.47 ft
Drawdown through weir? N (Y or N)
Weir type (unifless)
Coefficient of discharge(C,„) (unitess)
Length of weir(L) ft
Driving head(H) ft
Pre-development 1-yr,24-hr peak flow ff3/sec
Post-development 1-yr,24-hr peak flow ft3/sec
Storage volume discharge rate(through discharge orifice or weir) 0.04 ft3/sec Storage volume discharge rate greater than pre-dev.1yr24hr.
Storage volume drawdown time 3.18 days OK,draws down in 2-5 days.
Additional Information
Vegetated side slopes 3 :1 OK
Vegetated shelf slope 10:1 OK
Vegetated shelf width 10.0 ft OK
Length of flowpath to width ratio >3 :1 OK
Length to width ratio >1.5 :1 OK
Trash rack for overflow&orifice? Y (Y or N) OK
Freeboard provided ft
Vegetated filter provided? N (Y or N) OK
Recorded drainage easement provided? Y (Y or N) OK
Capures all runoff at ultimate build-out? Y (Y or N) OK
Drain mechanism for maintenance or emergencies is: PORTABLE PUMP
� 77
Form SW41.11-Wet Detention Basin Rev.9 4/18/12 APB 2 5 2013 Parts I.&II.Design Summary,Page 2 of 2

Permit No.
(to be provided by DWQ)
PkA 3 —Ea*t *(o
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. It a
requirement has not been met,attach justification.
Page/Plan
Initials Sheet No.
N k S63—t 1. Plans(1"-50'or larger)of the entire site showing:
SLS-•-- -Design at ultimate build-out,
St—N-5 -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.
fr 1 A P-s 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,
-I-orebay and main pond with hardened emergency spillway,
-Basin cross-section,
-Vegetation specification for planting shelf,and
-Filter strip.
(tA V tF-3 3. Section view of the wet detention basin(1" 20'or larger)showing:
-Side slopes,3:1 or lower,
-Pretreatment and treatment areas,and
-Inlet and outlet structures.
NKr{ N IA 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.
t tA- c# .c 5 5. A table of elevations,areas,incremental volumes&accumulated volumes for overall pond and for forebay,
to verify volume provided.
M'f1k 0\ 6. A construction sequence that shows how the wet detention basin will be protected from sediment until the
entire drainage area is stabilized.
MVrk t!'[e-we€ 7. The supporting calculations.
Mill tPC.LU e 8. A copy of the signed and notarized operation and maintenance(O&M)agreement.
M V l ikiuDetj 9. A copy of the deed restrictions(if required).
Nl'CI-1r 1414 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. mart" kot 1, OcT
-rt-le-tluG•ciF)
c tatrs+tt_PetzlattllIS6r
4 0
APR252013
Form SW401-Wet Detention Basin-Rev.9-4i18112 Part III.Required Items Checklist,Page 1 of 1

CAPE FEAR
ENGINEERING
April 25, 2013
Janet Russell
NCDENR — DWQ
Wilmington Regional Office
RE: Express Stormwater Submittal for Hawkeswater at the River
(previously permitted as SW8 060354)
Dear Janet,
Cape Fear Engineering (CFE) is submitting for an Express Stormwater Permit for the
Hawkeswater at the River subdivision. This project was originally permitted as SW8
060354 with Riverside Land Holding II, LLC as the permit holder.
The p : '..': ._ since been acquired by DR Horton, Inc. Because DR Horton has
been unable to get the original permit holder to transfer the stormwater permit, they
would like to submit for a new stormwater permit to supersede the existing permit.
This strategy has been discussed with and recommended by Georgette Scott.
With the exception of the ownership change, this submittal does not intend to make
any modifications to the previously permitted design. New applications, supplements,
and O&M agreements have been provided.
Deed Restrictions and Protective Covenants were previously recorded for the
Hawkeswater subdivision. A copy of the recorded document has been provided.
Since there are no changes to the previously approved subdivision plan and BMPs,
copies of the originally approved plans and calculations have been provided.
I trust that this information is sufficient to issue the subject stormwater permit;
however, please let me know if you have any questions or need any additional
information.
Sincerely,
tit
Matthew Haley,A
Cc: CFE File 410-01 "36" flECEVEj'
.
APR 2 5 2013
BY:
151 Poole Rood, Suite 100 • Belville, NC 28451 • TEL: [phone] • FAX [phone]
www.capefearengineering.com

f�;`.2) 4 For DENR Use ONLY
v Reviewer: ''
North Carolina Department of Environment and Submit: /4 -Z•
�� � Natural Resources ,y Z®
NCDENR Request for Express Permit Review Tim
Confirm:
FILL-1N all the information below and CHECK the Permit(s)you are requesting for express review. Call and Email the completed form to the
Permit Coordinator along with a completed DETAILED narrative,site plan(PDF file)and vicinity map(same items expected in the application
package of the project location.Please include this form in the application package.
• Asheville Region Alison Davidson 828-296-4698;alison.davidsonftcdenr.gov P Related
Permits of Requeue
st
• Fayetteville or Raleigh Region-David Lee 919-791-4203;david.lee(dUicdenrgov
• Mooresville&Winston Salem Region-Patrick Grogan 704-235-2107 or patrick.grogan(ancdenr.gov SW
• Washington Region-Lyn Hardison 252-948-3842 or lvn.hardisontncdenr.gov SW—
• Wilmington Region-Janet Russell 910-796-7302 or ianet.russelKdncdenr.gov SW
SW
• Wilmington Region-Cameron Weaver 910-796-7303 or cameron.weavertaZncdenr.gov SW
NOTE:Project application received after 12 noon will be stamped in the following work day.
Project Name:HAWKESWATER AT THE RIVER County:BRUNSWICK IA Applicant: BRAD BRUNDAGE Company: DR HORTON,INC ( `�
Address:4073 BELLE TERRE BLVD City:MYRTLE BEACH,State:SC Zip:29579-_
Phone:[phone],Fax: _ , Email:BCBRUNDAGERDRHORTON.COM
Physical Location:APPROX 1.5 MILES SOUTH ON NC-133 FROM INTERSECTION WITH US-17
Project Drains into BRUNSWICK RIVER waters—Water classification SC 18-77(please visit here to look up stream classification)
Project Located in CAPE FEAR River Basin. Is project draining to class ORW waters?N,within'/mile and draining to class SA waters N or within 1 mile
and draining to class HQW waters?N
Engineer/Consultant:MATTHEW HALEY Company:CAPE FEAR ENGINEERING,INC ')E C EWE E ;
Address:151 POOLE ROAD SUITE 100 City: BELVILLE,State:NC Zip:28451-_
Phone:[phone],Fax:[phone],Email:[e-mail] 11 APR 2 2 2013
SECTION ONE: REQUESTING A SCOPING MEETING ONLY
❑Scoping Meeting ONLY ❑DWQ, ❑DCM, 0 DLR, 0 OTHER: BY:
SECTION TWO: CHECK ONLY THE PROGRAM(S)YOU ARE REQUESTING FOR EXPRESS PERMITTING
❑401 Unit ❑Stream Origin Determination:_#of stream calls—Please attach TOPO map marking the areas in questions
❑ Intermittent/Perennial Determination:_#of stream calls—Please attach TOPO map marking the areas in questions
❑401 Water Quality Certification 0 Isolated Wetland( linear ft or acres)
0 Riparian Buffer Authorization ❑Minor Variance ❑Major General Variance
NI State Stormwater ❑General ❑SFR, ❑SFR<1 ac. ❑Bkhd&Bt Rmp, ❑Clear&Grub, 0 Utility ❑Other
❑Low Density ❑Low Density-Curb&Gutter _#Curb Outlet Swales ❑Off-site[SW (Provide permit#)]
®High Density-Detention Pond 10#Treatment Systems ❑High Density-Infiltration _#Treatment Systems
El High Density-Bio-Retention _#Treatment Systems 0 High Density—SW Wetlands _#Treatment Systems
0 High Density-Other _#Treatment Systems /❑MOD:D Major❑Minor❑ Plan Revision❑Redev.Exclusion SW (Provide permit#)
❑Coastal Management ❑Excavation&Fill ❑Bridges&Culverts 0 Structures Information
❑Upland Development ❑Marina Development ❑ Urban Waterfront
❑Land Quality ❑Erosion and Sedimentation Control Plan with_acres to be disturbed.(CK# (for DENR use))
SECTION THREE—PLEASE CHECK ALL THAT IS APPLICABLE TO YOUR PROJECT(for both scoping and express meeting request)
Wetlands on Site❑Yes 0 No Buffer Impacts:❑No❑YES: _acre(s)
Wetlands Delineation has been completed:❑Yes❑No Isolated wetland on Property❑Yes 0 No
US ACOE Approval of Delineation completed: ❑Yes❑No 404 Application in Process w/US ACOE: ❑Yes ❑ No Permit
Received from US ACOE❑Yes 0 No
For DENR use only
Fee Split for multiple permits: (Check# i Total Fee Amount$
SUBMITTAL DATES Fee SUBMITTAL DATES Fee
CAMA $ Variance(❑Maj;❑Min) $
SW(❑HD,❑LD,❑Gen) $ 401: $
I LQS I $ Stream Deter,_ rt i E
2_I 000 fl APR 2 5 2013
NCDENR EXPRESS June 2011
RV.

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Russell, Janet
From: Matt Haley[[e-mail]]
Sent: Monday,April 22, 2013 2:25 PM
To: Russell, Janet
Cc: Perry Davis; Maria Jones
Suoject: Express Request-Hawkeswater at the River
Attachments: 2008-09-08 Overall Hawkeswater.pdf; EXPRESS REQUEST FORM.doc
Janet,
I would like to request an Express Stormwater submittal meeting for"Hawkeswater at the River". I have attached the
Express Request form and an overall site plan. Please accept the following in lieu of a formal written narrative.
This project was originally permitted as SW8 060354 with Riverside Land Holding II, LLC as the permit holder.The project
has since been acquired by DR Horton, Inc. Because DR Horton has been unable to get the original permit holder to
transfer the stormwater permit,they would like to submit for a new stormwater permit to supersede the existing
permit.This strategy has been discussed with and recommended by Georgette Scott.
With the exception of the ownership change,this submittal does not intend to make any modifications to the previously
permitted design. New applications,supplements,O&M agreements,and deed restrictions will be provided.Since there
are no changes to the previously approved subdivision plan and BMPs,the intent is to provide copies of the originally
approved plans and calculations.
Please let me know if you have any questions or need any additional information.
Thanks,
Matthew T. Haley - PE, LEED Green Associate
CAPE FEAR
ENGINEERING
[e-mail]
C: 910.338.8602
0: 910.383.1044 ext. 136
F: 910.383.1045
i

CAPE FEAR
ENGINEERING
151 Pooh Rd.,Suitiiir 100;B.Mk,NC,28451
TEL[phone];FAX [phone]
'Nwvicapefearlinginsaing.co" Transmittal
To: j NCDENR - DWQ Date: April 25, 2013
Wilmington Regional Office File: 410-01 "36"
Subject: Hawkeswater at the River
Express Stormwater Submittal
Attn: Janet Russell
❑As Requested ❑ For Your Files ❑ For Distribution ® For your Review/Action/Approval
❑ Sent via Mail ❑ Sent via Courier
Quantity Drawing No. Description
1 Original $2,000 Express Fee
1 Original Cover Letter
2 Original& Stormwater Permit Application
Copy
1 Original Pond Supplements and Checklists
1 Original Pond O&M Agreements
1 Copy Secretary of State Info for DR Horton, Inc.
1 Copy Document giving signature authority to Brad Brundage
1 Copy Property Deed
1 Copy Previously Recorded Deed Restrictions
1 Copy Previously Permitted Pond Calculations
2 Copy Previously Permitted Stormwater Plans
REMARKS Please find the enclosed documents related to stormwater permitting for the above referenced project.
Please let me know if you have any questions or require any additional information. Thanks.
CC: Cape Fear Engineering, Inc.
File 410-01 "36"
flE IVE Signed:
Matthew a ey, P .
11 AF R 2 5 2013 Received By:
BY: Date:
P:141 0141 0-011Admintstormwater12013 Ownership Change to DR Horton12013-04-25 Trans NCDENR.doc

CAPE FEAR
ENGINEERING
151 Poole Rd.,Side 100;&Ass,NC,28451
TEL[phone];FAX[phone]
invw.cap"fearengineering.com Transmittal
To: j NCDENR - DWQ Date: April 25, 2013
Wilmington Regional Office File: 410-01 "36"
Subject Hawkeswater at the River
Express Stormwater Submittal
Attn: Janet Russell
El As Requested ❑ For Your Files El For Distribution ® For your Review/Action/Approval
El Sent via Mail ❑ Sent via Courier
Quantity Drawing No. Description r
Original $2,000 Express Fee4(
1 Original Cover Letter P 3°di2 Original & Stomiwater Permit Application ' ��i1fit
r) tl'
Copy
1 Original Pond Supplements and Checklists oY ,
i Original Pond O&M Agreements ))
1 Copy Secretary of State Info for DR Horton, Inc.
1 Copy Document giving signature authority to Brad Brundage
1 Copy Property Deed
1 Copy Previously Recorded Deed Restrictions
1 Copy Previously Permitted Pond Calculations
2 Copy Previously Permitted Stormwater Plans
REMARKS Please find the enclosed documents related to stormwater permitting for the above referenced project
Please let me know if you have any questions or require any additional information. Thanks.
ECESVF
CC: Cape Fear Engineering, Inc.
File 410-01 "36" s. APR 2 5 2 3 ' /
Signed: .. .
Matthew a ey, P .
BY:
Received By:
Date:
PM104410-011Adminlstormwater12013 Ownership Change to DR Horton12013-04-25 Trans NCDENR.doc

aya, E-Filed Annual Report
r 'i `1:'' BUSINESS CORPORATION4988929
It �,
5 ANNUAL REPORT Do not data enter manually.
NAME OF BUSINESS CORPORATION: D.R.Horton,Inc.
FISCAL YEAR ENDING: 9/30/2012 STATE OF INCORPORATION: DE
SECRETARY OF STATE CORPORATE ID NUMBER: 0296009
NATURE OF BUSINESS: HOMEBUILDING/CONSTRUCTION
REGISTERED AGENT: CT Corporation System
REGISTERED OFFICE MAILING ADDRESS: 150 Fayetteville St.,Box 1011
Raleigh,NC 27601
REGISTERED OFFICE STREET ADDRESS: 150 Fayetteville St.,Box 1011
Raleigh,NC 27601 Wake County
PRINCIPAL OFFICE TELEPHONE NUMBER: [phone]
PRINCIPAL OFFICE MAILING ADDRESS: 301 Commerce Street,Suite 500
Fort Worth, TX 76102
PRINCIPAL OFFICE STREET ADDRESS: 301 Commerce Street,Suite 500
Fort Worth, TX 76102
PRINCIPAL OFFICERS:
Name:Donald R.Horton Name:Donald J. Tomnitz Name:Bill W. Wheat
Title:Chairman Of The Board Title:President Title: Vice President
Address: Address: Address:
301 Commerce Street 301 Commerce Street 301 Commerce Street
Suite 500 Suite 500 Suite 500
Fort Worth, TX 76102 Fort Worth, TX 76102 Fort Worth, TX 76102
Name:Stacey H Dwyer Name:Thomas B.Montano
Title:Treasurer Title: Vice President
Address: Address:
301 Commerce Street 301 Commerce Street
Suite 500 Suite 500
Fort Worth, TX 76102 Fort Worth, TX 76102
CERTIFICATION OF ANNUAL REPORT MUST BE COMPLETED BY ALL BUSINESS CORPORATIONS
Thomas B.Montano 1/2/2013
FORM MUST BE SIGNED 1lY AN OFFICER OF THE CORPORATION DATE
Thomas B.Montano Vice President
TYPE OR PRINT NAME TYPE OR PRINT TITLE
ANNUAL REPORT FEE:E-Paid MAIL TO: Secretary of State•Corporations Division•Post Office Box 29525•Raleigh,NC 27626-0525
r
py; APR 2 5 2013 }
Y�y{
BY:

CERTIFICATE OF OFFICER
The undersigned hereby certifies as follows:
1. He is a duly elected,qualified and acting Assistant Secretary of D.R.Horton,Inc.,a
Delaware corporation (the "Company), is familiar with the facts herein certified and is duly
authorized to certify the same.
2. The following is a true,correct and complete copy of resolutions related to the subject
matter as adopted by the Consent of Executive Committee of the Board of Directors of the Company
dated April 11,2011 (the"Resolutions"). The Resolutions have not been amended,rescinded or
modified and remain in full force and effect as of the date hereof.
Election of Assistant Vice President and Assistant Division President
RESOLVED,that Bradford C. Brundage is hereby elected to the office of
Assistant Vice President of the Company (the "Assistant Vice President") in the
Company's Coastal Carolina Division(the"Division"),to serve until the next annual
meeting of the directors of the Company and until his successor is duly elected and
qualified or until his earlier death,resignation or removal.
RESOLVED FURT RE R, that the Assistant Vice President is hereby
authorized and empowered,in the Myrtle Beach and Wilmington area(the"Area")
and in the name and on behalf of(A)the Company,(B)any partnership of which the
Company is a general partner, manager or agent, and (C) any limited liability
company of which the Company is a member,manager or agent (collectively the
"Entities"),(i)subject to written approval by any one of the following officers of the
Company: (a) Chairman of the Board, (b) President, (c) Senior Executive Vice
President,(d)Executive Vice President or(e)the Region President of the Division
(the"Approving Officers"),to execute and deliver contracts,agreements and other
documents and instruments (other than promissory notes) for the purchase of real
property, and any improvements or appurtenances constructed thereon or affixed
thereto, or any interest therein, including without limitation any right-of-way,
easement,leasehold or other tangible or intangible property,right or interest,and any
personal property relating or incident thereto,(ii)subject to written approval by any
one of the Approving Officers,to execute and deliver contracts,agreements,deeds,
conveyances or other obligations of the Entities, closing statements and other
documents and instruments for the sale of improved or unimproved real property,or
any interest or right therein,owned,leased or otherwise controlled by the Entities and
(iii) to execute and deliver model home leases and such other agreements,
instruments or documents as the Approving Officers shall direct.
RESOLVED FURTHER, that in connection with the management of the.
Entities'business,the Assistant Vice President is hereby authorized and empowered,
in the name and on behalf of the Entities in the Area, to execute and deliver (i)
I ,
APR 2 5 2013
BY:

contracts, agreements and other documents and instruments for the subdivision,
development and/or improvement of real property, (ii)home sales contracts, sales
person employment agreements and siknihir ur equivalent agreements,documents or
instruments and (iii) personal property leases for, among other things, office
equipment and construction trailers.
RESOLVED FURTHER, that in connection with the management of the
Entities'business in the Area,the Assistant Vice President shall be authorized and
empowered, in the name and on behalf of the Entities in the Area, to execute and
deliver any and all documents and instruments necessary to sell and convey title to
single-family homes.
RESOLVED FURTHER, that effective April 11, 2011, Bradford C.
Brundage is hereby removed from the office of Vice President of the Company and
Division President of the Company's Charlotte Division.
RESOLVED FURTHER,that effective as of the date hereof,the authority
hereby granted to the Assistant Vice President supersedes authority previously
granted by Written Consent of Executive Committee of the Board of Directors to the
Assistant Vice President.
IN WITNESS WHEREOF,the undersigned has set his hand on the 121h day of April,2011.
n'4444.4- /L tAa-
Thomas B.Montano
Assistant Secretary
tai I EWAi l iMin\DH1h11 Aprl 2-COAS12.wpd 2

,
,. ... • . I> --..n. Ill bp r . ,,,, s &
Inlll�l� a'-�-'®aadP
+�N'r.'1 of [ y. NC snt.r of Dnada papa 1 er d
Brenda M. omens Register of Deeds
This certifies that there are nolt-e9-2N12.13:4B:41.NC Brunswick County, NC
delinquent ad NC REVENUE STAMP: $21209.00 (023221)
vabrem loxes,Mee,eeeeee.aente at ogler
fens elfin the Baunewick Count lhx f
I Weida is charged with°°Ile ':Q;r;" a i'„ -I_-01.1n p) Eft T5
as notated by the Brunswick O, r g( i r��21a.o c._ Rev i J _t2 fat TiG
Assessor's Office. This is not a ...... 0, J rr Ck 4__.c.4113jel$cash$
that the parcel number Malebee the.7:4 ' CUICU Cacti.d Finance
descciptiun. � ,9 / ' oleo:ermN err i;bo:uudu�tscandfoo
"f X* Car �r of original
•i Dote o tkaimard=dare ands vetted Wergild
Tax Col./ Spam '+actsreant tnato:m et ho temodteederurtphd.
NORTH C INA SPECIAL W DEED
Excise Tax:$11,200.00 -g'( , -
I�el Identifier No. �� r�y the_day of ,20
Mail/Box to:Grantee
This instrument was prepared by:M.Jay DeVaaey
Brief description for the Index:l tykes ter
THIS DEED rude this 11 day of Nove 012,by and b v(R1 rl
GRANTOR U,\� GRANTEE
First Troy SPE,LLC lei-k" gi , 1 '. t,. Inc.,a Delaware corporation
341 N.Main Street ` -;;;: 1.o Pads Blvd.,Suite 200
Troy,NC 27371 Mount Pleasant,SC 29464
1
rider ut appropriate block for each Grantor nentee: name,mailing address,and,if appropriate,character of entity,e.g.
corporation or partnership.
orli,' � �
The designation Grantor and Grantee as used herein ;I r]terra,successors,and assigns,and shall include
singular,plural,masculine,feminine or neuter tr1 t, p
asermorma
WlTNESSETH,that the Granto,fora valuable toleration.•��,�' `+, receipt ofwhichisherebyaclmowledged,has and
by these presents does ~'
g�4 bargain,sell and conveyulrto the Grantce in fees(r".(. all that certain lot orparcel of land situated in the
City of ,Town Creek Township,Bnmswick County,North Carolina and more particularly described as
follows:
See attached Exhibit A incorporated herd,by reference. Il 1,_�1
The property hereinabove deserted was acquired by G..i �' in Book 3146.Pace 832.Book 3190.Page 82,
Book 3214.Page 1151.Book 3270.Pages 92011 p+ 9
All or a portion of the property herein:unveye[~f includes ,the pnmary residence of a Grantor.
A map showing the above described property is recorded in Plat Book M4,pages 75.
TO HAVE AND TO HOLD the aforesaid lot or parcel of land and all erivilegeea and appurtenances thereto belonging to the Grantee in ,
fee simple.
NC Br Awodation Form No.6 43 I1112010
14inad by Ayeemcel with the NC Bar Asswdarfoa I,
n--;_lt)
FETBr
•
flECESVE '41 . : .�
APR ,. .. . .4.igglitio ••.. .„.

12
Ai ,L 44k
JtJiUJL !i!L. page 7 eP 6
OF f,raikyt L .
And the Grantor covenants with the Grantee,that Grantor has done nothing to I .- such title as Grantor received,and Grantor will
warrant and defend the title against the lawful claims of all persons claiming by.under or through Granor,other than the following
exceptions:
Easements,restrictions and rights of of record,govmurmental regulations,and ad valorem taxes forthe cement year.
.1N WITNESS WHEREOF,the Grantor has duly the��g 1 nd year first above written.
First Tam SPE.LLC 'trNe+ Qf L:eLJ fSEAL1
e Name
By:
MEAD
Print/Type Name hle:Jemry IClnlaw.Senior Vice ident Print/Type Name:
State of 1JOrth l,W it) WI- of P . m/
1, No P'u+tic of the Co CI ��f lir"I'a: t/asd State aforesaid,certify that
■v penamsllyappearedbefonsi asthisdayand
ackaow miofthe purponlefitheNtirmapressed.Witness my hand andNotttialstamp
Vt 2012.
•
' ,- ' ='ILl 13 C u
i.r. - 41
oary's Printed or Typal Name
• .Ytr y. -Count tyof
qr, 1 . •Notary Public of the ? Srateaforeseid,certify that Jerry Kitlaw
persa _ ma this day and eclmomvl sec President of E1nt T,oy San r T C a North
Carolina limited liability company,and that 'vet and enultemarraligudi entity,he signed the foregoing inslnsment
in its name on its behalf as its act and deed, my or seal,this day of November,2012.
My Commission Expires: Notary Public
(Affix Seal) Notary's Printed or Typed Name
State of -Coon ' gy of
I,the undersigned Notary Public of the Co City of..1 / I[i.1.L andStateaforesaid,certifythat
Witness my hand and Notarial stamp or seal,t l l� 4 1aeavrs.w rvsa ,2012.
My Cammliesion Expires: Notary Public
(Affix Seal) Notary's Printed or Typed Name
,
ce 17 ,
gFg©_6w -
ReiNtilpftrz
r fa
NC Bar Arrocimim Palm No.6 01/1.0010 s
Primed by Ag „I with S c NC BarAn+aielian g fr riPQt01:1666536.1
/ IcePezzlz
,ri;rib I.?-r'-''.
E ; : ,.
APR 2 5 2V3 ; ..
4/1
BY:

�]bjji!W!r
LLW
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Tract 1(Lahti,3146832):
Being all of Lot 169,Phase IA,Hawkeswater at theRiver Subdivision,as shown on map of same recorded in Map Book 48 at
Pages 27-30 of the Brunswick County Regil to which is A fora more detailed description.
Tract 2(Sexton/Mitcham.3190(82): �2�7��{
Being all of Lot 153,Phase IA,HawkewwateiI'L iihe Riv��l-1 •. ,,�;: shown on map of same recorded in Map Book 48,
Fors 27-30 and Book 2870,Page 1381 of the Brunswick County'4 "T';',reference to which is made for a Citte detailed
description.
Tract 3(Ra kovichlOerard.3214/1151):
Being all of Lot 143,Phase 1A,Hawkes River Subdivision,eAgir map of same recorded in Map Book 48 et
Pages 27-30 of the Brunswick County Registry, /ne to for a more detailed description. i
Tract 4(Hawkesv�er I,3270/9301: ii 111
lJ j 0 I
geongorea
a 4.4c r
Ge
Being all of that land shown as Phase 1A,and being 37.27 acres. .7.-1less,on"Map for Hawkswater"by Cape Pear
Engineering,Inc.,bearing Project Number 410-01 and dated September 13,2006,said property also being'Mown on a'Boundary
Survey and Phase Map fon Hawkeswater at the River"recorded Book44,Pages 74 and 75 of the BmnswickCounty Register
of Deeds;
SAVE AND EXCEPT the following lots or :Lots 4,5,7,16,17,1 1 21,22,66,125,126,136,139,140,143,144,
146,147,149,153,154,156,159,162,168 and River Subdivision,as shown on a map of '
sense recorded in Map Book 48 at Pagees 27-(r330r_ of Deeds. .
dife
Tract 5('Hawkeswater IL 3270/9351: VI
Being all of that land known as Phase 2 and being 17.70 acres,more or less,on"Map for Hawkswater"by Cape Fear
Engineering,Inc.,bearing Project Number 410-0I and dated September 13,2006;said property also being shown on a"Boundary
Survey and Phase Map for.Hawkeswater at the River-recorded in Book 44,Pages 74and 75 of the Brunswick County Register
of Deeds.
•
Tract 6(Hawkeawatet III,327019391: � (��x
Being all of that land shown as Phase 3 acres,sineostatt,on"Map for Hawkswater"by Cape Fear
Engineering,Inc.,bearing Project Number4 and 06;said property also being shownona"Boundary
Survey and Phase Map for:Hawkeswatcr at the River"recorded inBorikWagea74 and 75of the Brunswick County Register
of Deeds;
SAVE AND EXCEPT the following lots or parcels:
Lots 147,149,151,155,156,157 and 159,The Village at13awkeswater,Phase 3-A,Section 1,as shown on the platreco ded in
Map Book 56,Page 36 in the Brunswick gib of Deeds. ItiiD
Tract 7(Riverside 327019261: `� [ '�` 'J
f /u�
Being all of that land shown as Phase 1B, b .84 acres; and Phase 3B,being 20.04 acres,more or less,on
"Map for Hawkswater"by Cape Fear Engineering,Inc.,hearing Prof ber 410-01,and dated September 13,2006;said
property also being shown on a'Boundary Survey and Phase Map for:Hawkeswater at the Rivet'recorded in Book 44,Pages 74
and 75 of the Bmnswick County Register of Deeds.
NC Bar Association Soon No.601115010
Printed by Amount with the NC nor Association .p;r4j1 S�P f a NPt3B017666536.1
nn �� n IUra ,�jL
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[l�irk 0-) `r

o Fir Jill,I�a
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Tract S(Riverside IL 3270P920):•
RAM the Pawl NI tea m deseeibed la deed book 123 page 97,Records of
Bntoawi&Cas y,Nasth.t orelin,asslWing more parthelarb,dyad so
ro ono lWmthe,: r.
Nohow comma t`'1F` "� •
•sad point bah'the
4rll it L i; pion G both in p n
Swords of • a.,v - loaded el hove a
N.C.[arid sooldiests N�172,467 r• '; x F ,•+ (N.AD.1903):
Proceed theses with Ihsssslmprgrt ofway Of NC 133(60 4 Pilo ri{hl of
way)$17 54.31 E s Mimes of327.111.*spoil on odd dolt ofway.tfeam
with the sasdtem lies of the stl,rondd Mel wet N$3.37r04 E a thinnest
•
510 R.toaPout waiteahlaenraliesaarkofTroddcBlvis,them43 aelf s 1 . ' �see Amami N11d32A61.with mid • -tY .00li
0Hf • Ibenea
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lsraoa Grimmr
tospaha. themeN .2933Wa •, , : "{'r Yasp in;them S4i-26-
41 W a m of 41.92R,1s op* shoos.$24.3- W a d s:moa of 36.11*.
to s point, thence N 3114444 W a Jimmie of 30.251.ta'poi*theme N 10-
42.60 E s distmaa ef79.l IL to a point.&wee N 34,32.0011 a diatoms of
4434R.tra FAA theme NW-31-343a diatom 0.10.601.to sloth;dame
3 6241-31 E s • • ; of 27.6311.to apdst,theses N -5649 E a disc roe of
31.9111.is a point, • - 11-17-36 W e• 1 ,: to appal,themeeN49-31�WsL•r :''. . rt� •• —317-33.15Wa
dilutor 0f36.121 m s• ' • •!'e1 W a thwenosof20$311.1e a
Pow shinerM - �� 1 i 91 *moo N62.7.19E
1 .%., dbpsssa.ofl.0�l.to 0
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048CE056 .,-'i ►• .,. 7;�5: • ,/i:,� 048CE00104
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048CE001• ` U 048CE00106
048CE002 048 048CE00107
048CE003 048CE074 048CE00108
048CE006 048CE075 048CE000109
048CE008 048CE076 048CE00110
048CE009 048CE077 048CE00111
048CE010 048C' �� 038NB023
048CE011 r�JI 'l j, d 038NB024
048CE012 l J U (--f1j�r 080 UMPFECIAL 038KA00106
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048CE014 048CE082
048CE015 048CE083
048CE023 048CE084
048CE024 048CE085
048CE025 048CE086 rr°
048CE027 ,].Lr
048CE030 „ n
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048CE032 03
048CE033 038NB002
048CE034 038NB003
048CE035 038NB005 •
048CE036 038NB007 •
048CE037 038NB0 l`' /
048CE038 • . :1' :� �
048CE040 [1�]I :011 wax
048CE041 0 • 1-:+ >,Gi y
048CE044 038NB017
048CE045 038NB018
048CE048 038NB019
048CE051 038NB020
048CE053 % 038NB021
048CE054 03 p
048CE055 �rM '
048CE058 Lr�U u
048CE060 038
048CE061 038KA00105
048CE063 048CA02001
048CE064 048CE00I
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1-1AWKESWATER
ii-iERiVfrR
STORMWATER PLANS
Brunswick County, North Carolina
GENERAL CONSTRUCTION NOTES:
1)THE CONTRACTOR IS RESPONSIBLE FOR VERIFYING THE LOCATON
OF ALL EXISTNG UTUTES PWOR TO CONSTRUCTION.
-NI
/� qt TABLE OF CONTENTS
SDMABBREVIA H STORM DRAIN
DNS _--'LE _._._e , ��h-` _,�__OLD MILL ROAD za___=_� y /� ,
R`� a '�I �_'� — �! /�\ SW-1 SHEET NOES-STORMWATER MANAGEMENT PLAN OVERALL PHASES 1-3
DI DROP INLET �-\ Y ''•.� el"
j/ /\°\74111f SW-2 POND DRAINAGE AREA'S
CI CURB INLET ,S j �`'s Cr@Lok "' i // SW-3 STORMWATER MANAGEMENT PLAN PHASE 1A&1B
SW-4 SIORMWATER MANAGEMENT PLAN PHASE 2
IE INVERT ELEVATION Sturgeon
_ t ���-� /'� y,�' It SW-5 SR7RNWA1ER MANAGEMENT PLAN PHASE 3A h 33
RIM RIM ELEVATION OF STRUCTURE '�1` ; w S�� ``� C eek — r -:`` P-1 PHASE I S ORMWATER PONDS 1-3&POND DETAILS
h 5. f t P-2 PHASE 3 STORMWATER PONDS 1-3 N POND DETAILS
LF UNEAR FEET Ch//ye0 I .I
DIP DUCTILE IRON PIPE eitar; II 'I P-3 PHASE 3 STORMWATQi PONDS 4-7&POND DETAILS
�, L\,'1 - ,[ " , D-1 STORAIWATER MANAGEMENT DETAILS SHEET
PVC POLYVINYL CHLORIDE Z. T i� L7/ �~- ---�'I ri WILMINGTON
ELEV./EL. ELEVATION `LANVALE i N,.> .,''''',/
-'� --
RAIL--,,',. e
GV GATE VALVE OADS ROAD -%,� ��
MIN. MINIMUM \} ter -,'\
�I i iS. I ,- A\ CP�\
TYP. TYPICAL 11 i / 7- V,_ .
w
HP HIGH POINT l ^ j� `'
LP LOW POINT A\\." i' F. \
CONC. CONCRETE 1y l �`� S I T E ' � \ 1
i' / / `
RCP REINFORCED CONCRETE PIPE .Si '� // \`
CAN
CMP CORRUGATED METAL PIPE 73
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113M TEMPORARY BENCH MARK ,\S 1-- , C eK 'i vt
STA. STATION iv
\�;��. . �� 9/.4a ME
BOA BLOW OFF ASSEMBLY �(RAy�` � LOCATION MAP W
NIP NEW IRON PIPE n�P NOT TO SCALE USED.B�aroB
HDPE HIGH DENSITY POLYETHYLENE V
IMH INTERFERENCE MANHOLE
\ -���� �\��� GAPE FEAR FINAL Deem i n n v i Inc. NOT cOrremucTtoH�
jL I I I/1 G G! 11 I g, `r-CR AGENCY FEVEW ONLr�
151 Poole Road,Suite 100
1 Belville,NC 28451
g TEL [phone] '4`'"' -
FAX [phone] A 1,
§ www.capefearengineering.com c
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as-sea a is 1.K IahE ale Rix ado tau m M Tr IWE au au an _ ��iI I R�• DESC�TpI R BY
- .. ovum m au WE nu xv asEWE
prima to 6m 1Me +• - 4m MlmaM moms v �_ an mN an r M M - I �t�t♦ REVISIONS
am•am a DY POPE an sei 1e e.Y O�OWA0X1In a a • as II C u as a: °' °' �,� /I///
aaT ale a m ea. MN1MPn n x 9m an
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ow ±m ,e owMMmx HOE am Ma '•f SECTION X PLAN
age 01,. 21 K 0.W Iaeg % as Mm+ama a a ,o NNE an KO sex
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FEs .Rase - m.: see IaXE is ale 'too ads Maas le a mm NNE fOlmm a an 24,au �•MEL WO CURB INLET
w$ RN a e 1.. --.«:m rsMMu am p lee IWn am ,sea ale TYPICAL STREET CROSS-SECTION ( NOT TO SCALE
FOR CALDER CT ENNERDALE WAY(PHASE 2 ONLY).& 1
urw.u.m:I.ml... N. l sex 2..ua ti Anse.b.orra3En.w MORECAMBLE.BOULEVARD(PHASE 2 ONLY) ¢a,.- •�
N 6) IN sans W N N u - BCOmoD a B'NIEAVALS,
fee aid rm5a NOT TO SCALE ,6T
a as a NEE' 4a eai" am am-• z�$1I1 ;DOO PS CWIOE'IE 9DEWAUT, aPo"3
q qa m a a tEpE 0.W Rau 1 m _ -_ 1 `� IN PRIMOWIPE AGE•/FOOT 1/2'CCP.JOINT a 24'
ap a13 a x - 4M ' M IN Dw 6 MANAGE INTERVALS TIP.&
PI as a IaPn Kai % u• 1 CAga
TI M T ALL RAM
aal.3•011 1 n im maa WYE 7r 432 i ale all am ure ; - -- -sea-_ a yr IN rift. kV", rat �+-- ...� --- j: NTv+s 4N_
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W FleBN ]l to ge IEEE sex air- i Z a'Am CLNPACIED SUBCRAD[
a , wPE Leo am am ;nm ------s1�1- N'_-- K•IML MN/ �.'aL as TYPICAL UR-WAY '-p°M asas• -
rav-«o• - . ,m rose as .. TYPICAL STREET FROM STA.ECITCII
1e Pm -...1600 CUL-DE-SAC PLAN FOR MORECAMBLE BOULEVARD 10+00 TO STA.13+00 INTERSECTION CONCRETE SIDEWALK 7 W .a
•
-_ 1m u. a' .1_'-i13PE aau 'a.a'_ 00 - 1a1_".._ % - • NOT TO SCALE NOT TO SCALE NOT TO SCALE NOT TO SCALE
Fes W n m APE in m effi \ / 1°- LL•W INTES (- °EC.4PE FEAR
Foam-ca. IT le 1211 m.E a. m E� - - - \
5E81Y-M Itl u a 1m HOPE 14m use CM nm ,\ _-/ -- ENIr�,,N`,.T ,^A*1� 1 j'AT t•IR. 1.EXCAVATE IOAS PEA O,MING sNOAtI U9x0>:,SLOPES. r op.......
. ad" FAS 0..B,l01 2.CONTRAC ER IS ROACRSOBIE FOR ILL DE-WATEA"O REBORED. ,�"mje 4
ESTHWAITEDR. I .,� ea' 4 www.coalrmx.Nma.
. CUL-DE-SAC PLAN - ` "'
AT STA. 10+00 \, ,.' "-n_11_R_r--
TYPICAL STREET CROSS-SECTION N aI��� II=11���' Nam 1�aa a W1
NOT TO SCALE .` ,/ FOR MORECAMBLE BOULEVARD FROM STA.13+00(PHASE 1 ONLY). III;,II=11:=_y (DRAIN: A anal• PRINZ .o�
___/ I;"."'I.CESWA1ER.^ii'AR&975w STA.10+00 TO STA.21+33, a>Ass i vTAr A� m.al"a.N o--'. K ca®MS IMAae1:
r?geHAWKESWATER BOULEVARD STA.33+18 TO 34+76.97 re ^ '! aEM: L Mk. >aua: p xmm
OFFSET CUL-DE-SAC PLAN NOT TO SCALE �1 \) �i a ,� A1Baom 4:L MOM WAa: •NOV
NOT TO SCALE .( 4`�, 4 FEN AU.PiE59B
3 S z 'IV as
IV ms.Ea se �� - •�l.a `m^TM a R PRE. LI
f' i U. u ¢,m 511BTAE
ATER
3 k RIGID PIPE Yn°m@ 1N�A�AND APPLICATOR RATES
HAT THE WRIVER
o , - -ate tin 'iyif7.\ �..R. 1_ TRENCH DETAIL -- =-�y;�r ssa
a �,\ -�__7_- 1 --- r ear
NOT TO SCALE $SIa�,I��a..W..DRAR,'
LONE CT. CUL-DE-SAC PLAN 1\ ALL TYPICAL STREET CROSS-SECTION ma
PPERWA1LaT�HD STORMWATER MANAGEMENT 1I
, g NOT TO SCALE FOR CONSTCM DR,RBBLE DR.,SEATHWAITE N MA �„ �_;
.M DETAILS SHEET__ 1 !
TWICKENHAM CT:.CAMBECX WAY.EASDALE CT..LONE CT. t�
- WYRE CT..KEEKLE LN..BARBONDECK LN..&ESIHNNIE DR. .Y � �,� ' S "m--- M` WOE". �E ""
BSI CALDER CT.oT C�L�DEE-SAC PLAN NOT TO SCALE a APR 2 .4� xm.m.. ••1...R e W. OPIUM. . __
p��d ,( 410-03A1 SW D-1 3
BY:

Wet Detention Basin Calculations
(Previously Approved under SW8 060354 —
No Changes are proposed with this submittal)
IEGE/ViEj)
APR 2 5 2163 ii
BY:

WET DETENTION BASIN DATA SKEET
hAWKESWATER-PHASE I
POND #I - TOTAL
DRAINAGE AREA (Ad) = 23.62 ACRES
IMPERVIOUS AREA (Ai):
BUILDINGS: 6. 19 ACRES (6O lots @ 4500sf/lot)
ROADS: 2.26 ACRES
SIDEWALKS: 0.00 ACRES
OFF-SITE 0.00 ACRES
CONTINGENCY: 0.00 ACRES
TOTAL: 8.45 ACRES
PERCENT IMPERVIOUS (I):
= Ad/Ai = 35.77% (SAY36.00%)
POND # I SHALL BE 6.0' DEEP AND DESIGNED TO REMOVE 90% T55.
5A/DA= I .9000%
REQUIRED SURFACE AREA AT PERMANENT POOL:
SAREQ.= 0.44878 AC. = 19549 SF
SURFACE AREA PROVIDED AT PERMANENT POOL (EL. I 4.0)= 238 13 SF
I
SA PROV'D= 23813 > 19549 =SA REQ'D OK
MINIMUM REQUIRED VOLUME (SIMPLE METHOD BY TOM SCHUELER):
Rv=0.05+0.009"(I)
Rv= 0.37193
VOLUME= I "'Rv'Ad = 0.73208 AC-FT
= 3 1890 FT^3
VOLUME PROVIDED AT TEMPORARY POOL:
INCREM. TOTAL
FI SA (SF) VOL (CF) VOL. OF)
14 23513 0 0 APR 2 5 Ka
15 25741 24777 24777
6 27737 26739 51516 BY:
i 7 2,9780 28763 50280 , nATA c-h__T
PAGE J- _
D_..="r13`R.. 2005

SET TEMP. POOL ELEVATION:
REQ'D EL.= 15.26599 4—SAY 15.40
- VOL. PROV'D = 35473 CF
VOL. PROV'D= 35473 > 31890 =VOL. REQ'D OK
FOREDAY SIZING: SEE CALCULATIONS FOR WEST/EAST INLETS
ORIFICE SIZING: REQ'D DRAWDOWN TIME = 2-5 DAYS
Q2= 0. 18454G CF5 (FOR 2 DAY DRAWDOWN)
Q5= 0.0738 18 CFS (FOR 5 DAY DRAWDOWN)
SELECT A 3" CIRCULAR ORIFICE, EL. 14.0' (PERM. POOL EL.)
Q PROV'D= Cd"A.(2gh)" 1/2 WHERE: Cd= 0.G
A= 0.04908 SF
g= 32.2 FPS/5
h= AVE. HEAD =( I .40' - (0.5)(3"/12))/;
= 0.G375
Q PROV'D= O. 188G86
Q2> 0. 188G86 >Q5 OK
L
DRAWDOWN TIME:
TIME = VOLUME = 2.0 DAYS
Q PROV'D
"i EL,'ELvi.E..:;..)
APR 2 5 27113
BY:
5CE- '-=?. 7005

WET DETENTION BASIN DATA SHEET
HAWKESWATER-PHASE I
POND #1 - WEST INLET
DRAINAGE AREA (Ad) = 12.00 ACRES
IMPERVIOUS AREA (Ai):
BUILDINGS: 3.30 ACRES (32 SF LOTS X 4500SF/LOT)
ROADS: I . I ACRES
SIDEWALKS: 0.00 ACRES
OFF-SITE 0.00 ACRES
CONTINGENCY: 0.00 ACRES
TOTAL: 4.48 ACRES
PERCENT IMPERVIOUS (I):
I Ad/Ai = 37.33% (SAY 37.00%)
POND # I SHALL BE G.0' DEEP AND DESIGNED TO REMOVE 90% T55.
SA/DA= 1 .9500%
REQUIRED SURFACE AREA AT PERMANENT POOL:
SAREQ,= 0.234 AC. = 10I 93 SF
SURFACE AREA PROVIDED AT PERMANENT POOL (EL. I 4.0)= 12942 SF
SA PROV'D= 12942 > 10193 =SA REQ'D OK
ti
MINIMUM REQUIRED VOLUME (SIMPLE METHOD BY TOM SCHUELER):
SEE CALCULATIONS FOR TOTAL POND
FOREBAY SIZING:
PERMANENT POOL VOLUME:
INCREM. TOTAL
EI SA (SF) VOL. (CF) VOL. (CF) FECESVED
8 6 13 5 0 0 '" 's
9 6829 6482 G482 •• AM 2 5 23;3 `
10 7557 7193 13675Y,
Ii 8317 7937 216i2
12 91 12 8715 30327 41- (VOL. REQT MET!)
13 9940 9526 39852
17942 , 1441 51293
F•v` D. 2 DATA �_f-
.. Y. 3 00

REQ'D VOLUME = 20% TOTAL = 6065 CF
CHECK FOREBAY VOLUME:
INCREM. TOTAL
a- SA (5F) VOL. (CF) VOL. (CF)
8 358 0 0
9 627 493 493
10 968 798 1290
II 1381 1175 2465
I2 I866 1624 4089
13 2424 2145 623.4 4- (VOL. REQT MET!)
PROV'D VOLUME = 6234 CF (3' DEEP FOREBAY)
VOL. PROV'D= 6234 = 6065 =VOL. REQ'D OK
ORIFICE SIZING: REQ'D DRAWDOWN TIME = 2-5 DAYS
5EE CALCULATIONS FOR TOTAL POND
gnii 2 5 23
•
BY:
:; --
� _ OF 2
I .v_ _ •J

WET DETENTION BASIN DATA SHEET
HAWKESWATER-PHASE I
POND #I - SOUTH INLET
DRAINAGE AREA (Ad) = I I .6 I ACRES
IMPERVIOUS AREA (Ai):
BUILDINGS: 2.89 ACRES (28 LOTS @ 45005F/LOT)
ROADS: 1 .08 ACRES
SIDEWALKS: 0.00 ACRES
OFF-SITE 0.00 ACRES
CONTINGENCY: 0.00 ACRES
TOTAL: 3.97 ACRES
PERCENT IMPERVIOUS (I):
I = Ad/Ai = 34. 19% (5AY34.00%)
POND #1 SHALL BE 6.0' DEEP AND DESIGNED TO REMOVE 90% T55.
SA/DA= I .8000%
REQUIRED SURFACE AREA AT PERMANENT POOL:
SAKEQ.= 0.20898 AC. = 9I03 SF
SURFACE AREA PROVIDED AT PERMANENT POOL (EL. I 4.0)= 1087 I SF
5A PROV'D= 1057 I > 9 103 =5A REQ'D OK
MINIMUM REQUIRED VOLUME (SIMPLE METHOD BY TOM SCHUELER):
SEE CALCULATIONS FOR TOTAL POND
FOREBAY SIZING:
PERMANENT POOL VOLUME:
INCREM. TOTAL
Et- SA (SF) VOL. (CF) VOL. (CF) C iE S E_)
8 4417 0 0 Q � 2 � �
9 5060 4738 4738
10 5742 5401 10139 BY;
G459 G101 16240
I2 7209 G834 23074 .- (VOL. REQ'T MET!)
13 7993 7601 30676
4 I0871 9432 40I08
POND.42 DATA S1-15_I
1 OF 2
A`4 ;A. Y. 200E

REQ'D VOLUME = 20% TOTAL = 4615 CF
CHECK FOREBAY VOLUME:
INCREM. TOTAL
SA (SF) VOL. (CF) VOL. (CF)
8 240 0 0
9 465 352 352
10 758 61I 964
II 1121 939 1903
12 1555 1338 3241
13 2061 1808 5049 4— (VOL. REQ'T MET!)
PROV'D VOLUME = 5049 CF (3' DEEP FOREDAY)
VOL. PROV'D= 5049 = 46I 5 =VOL. REQ'D OK
ORIFICE SIZING: REQ'D DRAWDOWN TIME = 2-5 DAYS
SEE CALCULATIONS FOR TOTAL POND
nEcETIVEu
i:APR25
p .
2C3
FOND4i2 DATA 5�c=—
✓ice_'
?AG_ Th- 2

WET DETENTION BASIN DATA SHEET
HAWKESWATER-PHASE I
POND #2 - TOTAL
DRAINAGE AREA (Ad) = 14.65 ACRES
IMPERVIOUS AREA (AI):
BUILDINGS: 3.82 ACRES (37 SF LOTS X 4500SF/LOT)
ROADS: I .38 ACRES
SIDEWALKS: 0.00 ACRES
OFF-5ITE 0.00 ACRES
CONTINGENCY: 0.00 ACRES
TOTAL: 5.20 ACRES
PERCENT IMPERVIOUS (I):
I = Ad/AI = 35.497o (5AY35.00%)
POND#! SHALL BE 4.0' DEEP AND DESIGNED TO REMOVE 90% T55.
SA/DA= 3. I000%
REQUIRED SURFACE AREA AT PERMANENT POOL:
SAKEQ.= 0.454I5 AC. = 19783 SF
SURFACE AREA PROVIDED AT PERMANENT POOL (EL. 17.0)= 21561 SF
5A PROV'D= 2 156I > 19783 =SA REQ'D OK
MINIMUM REQUIRED VOLUME (SIMPLE METHOD BY TOM SCHUELER):
Rv=0.05+0.009"(I)
Rv= 0.3G94I
VOLUME= I ""Rv"Ad = 0.45099 AC-FT
= 19645 FT^3
VOLUME PROVIDED AT TEMPORARY POOL:
INCREM. TOTAL
FI
SA (SF) VOL. (CF) VOL. (CG)
17 21561 0 0
18 23708 22635 22635 APR Z 5 233
19 26267 24987 47622
20 28908 27587 75209 BY'
TOTAL PAGE 1 PH I -POND-2

SET TEMP. POOL ELEVATION:
REQ'D EL.= 17.86792 4—SAY 17.90
VOL. PROV'D = 20371 CF
VOL. PROV'D= 2037 I > I9645 =VOL. REQ'D OK
ti
FOREBAY SIZING: SEE CALCULATIONS FOR NORTH/WEST INLETS
ORIFICE SIZING: REQ'D DRAWDOWN TIME = 2-5 DAYS
Q2= 0. 113687 CFS (FOR 2 DAY DRAWDOWN)
Q5= 0.045475 CFS (FOR 5 DAY DRAWDOWN)
SELECT A 2" CIRCULAR ORIFICE, EL. I 7.0' (PERM. POOL EL.)
Q PROV'D= Cd*A*(2gh) . 1/2 WHERE: Cd= 0.6
A= 0.0218 SF
9= 32.2 FP5/5
h= AVE. HEAD =(0.90' - (0.5)(2"/12))/;
= 0.40533
Q PROV'D= 0.067074
Q2> O.0G7074 >Q5 OK
ti
DRAWDOWN TIME:
TIME = VOLUME = 3.38987 DAYS
Q PROV'D
i APR 2 5 2::3 11,,,i
1 i EgY
BY:
TOTAL PAGE 2 Ph I-POND-2

WET DETENTION BASIN DATA SHEET
HAWKESWATER-PHASE I
POND #2 - NORTH INLET
DRAINAGE AREA (Ad) = 8.04 ACRES
IMPERVIOUS AREA (Ai):
BUILDINGS: I .9 I ACRES (I 8.5 SF LOTS X 4500SF/LOT)
ROADS: 0.79 ACRES
SIDEWALKS: 0.00 ACRES
OFF-SITE 0.00 ACRES
CONTINGENCY: 0.00 ACRES
TOTAL: 2.70 ACRES
PERCENT IMPERVIOUS (I):
I = Ad/Ai = 33.58% (SAY 34.00%)
POND #2 SHALL BE 4.0' DEEP AND DESIGNED TO REMOVE 90% TS5.
SA/DA= 3.0200%
REQUIRED SURFACE AREA AT PERMANENT POOL:
SAREQ.= 0.242808 AC. = 10577 SF
SURFACE AREA PROVIDED AT PERMANENT POOL (EL. 17.0)= 10763 SF
SA PROV'D= 10763 > 10577 =SA REQ'D OK
ti
MINIMUM REQUIRED VOLUME (SIMPLE METHOD BY TOM SCHUELER):
SEE CALCULATIONS FOR TOTAL POND
FOREBAY SIZING:
PERMANENT POOL VOLUME:
INCREM. TOTAL
SA (SF) VOL. (CF) VOL. (CF)
I3 6143 0 0
14 G753 6448 6448
15 7408 7080 13528 4- (VQL,,,ZE T!
6 81i6 7762 21290 11
17 I0763 9440 30729 ^�
�-R 225 2ep3
BY:
• POND#2 DATA SHEET
PAGE I OP 2
JANUARY, 2006

REQ'D VOLUME = 20% TOTAL = 270G CF
ChECK FOREBAY VOLUME:
INCREM. TOTAL
EL. SA (SF) VOL. (CF) VOL. (CF)
13 442 0 0
I4 749 595 595
15 II29 939 I535
16 1 577 1353 2888 4-- (VOL. REQT MET))
PROV'D VOLUME = 2888 CF (3' DEEP FOREBAY)
VOL. PROV'D= 2888 = 270G =VOL. REQ'D OK
ORIFICE SIZING: REQ'D DRAWDOWN TIME = 2-5 DAYS
SEE CALCULATIONS FOR TOTAL POND
ilECERrEp
APR 2 5 2(T3
BY:
POND#2 DATA SKEET
PAGE 2 OF 2
JANUARY, 200G

WET DETENTION BASIN DATA SHEET
HAWKESWATER-PHASE 1
POND #2 - WEST INLET
DRAINAGE AREA (Ad) = 6.6 I ACRES
IMPERVIOUS AREA (Ai):
BUILDINGS: I .91 ACRES (18.5 SF LOTS X 45005F/LOT)
ROADS: 0.59 ACRES
SIDEWALKS: 0.00 ACRES
OFF-SITE 0.00 ACRES
CONTINGENCY: 0.00 ACRES
TOTAL: 2.50 ACRES
PERCENT IMPERVIOUS (I):
I = Ad/Ai = 37.82% (5AY36.00%)
POND #2 SHALL BE 4.0' DEEP AND DESIGNED TO REMOVE 90% TSS.
SA/DA= 3.3400%
REQUIRED SURFACE AREA AT PERMANENT POOL:
SAREQ.= 0.220774 AC. = 9617 SF
SURFACE AREA PROVIDED AT PERMANENT POOL (EL. 17.0)= 10798 SF
SA PROV'D= 10798 > 96 17 =5A REQ'D OK
ti
MINIMUM REQUIRED VOLUME (SIMPLE METHOD BY TOM SCHUELER):
SEE CALCULATIONS FOR TOTAL POND
FOREBAY SIZING:
PERMANENT POOL VOLUME:
I NCREM. TOTAL
SA (SF) VOL. (CF) VOL. (CF)
13 4140 0 0
14 5012 457G 4576
15 5954 5483 10059 a-- (V47EQ'T MET!2,
1 G G9G5 6459 165 19 = .t ' 7`
17 I0798 888 ! 25400 h25r3
BY:
POND#2 DATA SHEET
PAGE I OP 2
JANUARY, 2006

REQ'D VOLUME = 20% TOTAL = 201 2 CF
ChECK FOREBAY VOLUME:
INCREM. TOTAL
5A (5F) VOL. (CF) VOL. (CF)
13 272 0 0
14 524 398 398
15 852 G58 I08G
I G 1 253 1052 2 138 4-- (VOL REQ'T MET!)
PROV'D VOLUME = 2 138 Cr (3' DEEP FOREDAY)
VOL. PROV'D= 2 138 201 2 =VOL. REQ'D OK
ORIFICE SIZING: REQ'D DRAWDOWN TIME = 2-5 DAYS
SEE CALCULATIONS FOR TOTAL POND
!.::r 1
b POND#2 DATA SHEET
AP s> PAGE 2 OP 2
JANUARY, 2006
BY:

WET DETENTION BASIN DATA SHEET
HAWKESWATER-PHASE I
POND #3
DRAINAGE AREA (Ad) = 28. 17 ACRES
IMPERVIOUS AREA (Al):
BUILDINGS: 9. 19 ACRES (89 LOTS@45005F)
ROADS: 2.49 ACRES
SIDEWALKS: 0.00 ACRES
OFF-SITE 0.00 ACRES
CONTINGENCY: 0.00 ACRES
TOTAL: I I .65 ACRES
PERCENT IMPERVIOUS (I):
I = Ad/Ai = 4 I .46% (5A)'4/%)
POND#3 SHALL BE 7.0' DEEP AND DESIGNED TO REMOVE 90% T55.
SA/DA= I .4500%
REQUIRED SURFACE AREA AT PERMANENT POOL:
SAREQ.= 0.408465 AC. = 17793 SF
SURFACE AREA PROVIDED AT PERMANENT POOL (EL. 14)= 21892.5 5P
SA PROV'D= 2 1892.52 > 17793 =SA REQ'D OK
MINIMUM REQUIRED VOLUME (SIMPLE METHOD BY TOM SCHUELER):
Rv=0.05+0.009*(1)
Rv= 0.42314
VOLUME= I ""Rv'Ad = 0.99332 AC-FT
= 43269. 1 FT^3
VOLUME PROVIDED AT TEMPORARY POOL:
INCREM. TOTAL FECEIVE;`'
F SA (SF) VOL. (Cr) VOL. (Of)
14 21893 0 0 APR Z 5 23
15 23806 22849.5 22849.5
I 25780 24793.4 47642.9 BY
17 27815 26797.6 74440.5 POND#I DATA SHEET
PAGE I OF 3
APRIL, 2006

SET TEMP. POOL ELEVATION:
REQ'D EL.= 15.82359 4--SAY 15.9
VOL. PROV'D = 45 164 CF
VOL. PROV'D= 45I 63.55 > 43269. 1 =VOL. REQ'D OK
FOREBAY SIZING:
PERMANENT POOL VOLUME:
I N CREM. TOTAL
SA (SF) VOL. (CF) VOL. (CF)
7 6983 0 0
8 831G 7650 7650
9 9714 9015 I6665
I0 I 1177 10446 27111
II I2705 11941 39052
12 14296 13501 52553 4— (VOL REQ'T METI)
13 15948 15122 67675
14 21893 18920 86596
REQ'D VOLUME = 20% TOTAL = 105 I I CF
CHECK FOREBAY VOLUME:
INCREM. TOTAL
J.,. SA (SF) VOL. (CF) VOL. (CF)
10 2509 0 0
II 3147 2828 2828
I2 3855 3501 6328
13 4634 4244 10573
PROV'D VOLUME = 10573 CF 3' DEEP FOREBAY)
VOL. PROV'D= 10573 10511 =VOL. REQ'D OK
-SVEU
POND#I DATA SHEET
ifPAGE 2 OP 3
s; APR 2 5 E3 APRIL, 200G
RY.

ORIFICE SIZING: REQ'D DRAWDOWN TIME = 2-5 DAYS
Q2= 0.2504 CFS (FOR 2 DAY DRAWDOWN)
Q5= 0. 1001 G CF5 (FOR 5 DAY DRAWDOWN)
SELECT A 3" CIRCULAR ORIFICE, EL. 50.0' (PERM. POOL EL.)
Q PROV'D= Cd`A'(2gh) " 1/2 WHERE: Cd= 0.G
A= 0.04909 SF
g= 32.2 FP5/5
h= AVE. HEAD =( I .9' - (0.5)(3"/12))/2
= 0.8875
Q PROV'D= 0.222GG I
Q2> 0.222661 >Q5 OK
DRAWDOWN TIME:
TIME = VOLUME = 2.249I 5 DAYS
Q PROV'D
•
APR 25 2 3
nt
POND#I DATA SHEET
PAGE 3 OF 3
APRIL, 2006

WET DETENTION BASIN DATA SHEET
HAWKESWATER PHASE 3
POND # I
DRAINAGE AREA (Ad) = 5.32 ACRES
IMPERVIOUS AREA (Ai):
BUILDINGS: I .22 ACRES
ROADS: 1 .22 ACRES
SIDEWALKS: 0.00 ACRES
OFF-51TE 0.00 ACRES
CONTINGENCY: 0.00 ACRES
TOTAL: 2.44 ACRES
PERCENT IMPERVIOUS (I):
I = Ad/Ai = 45.86% (5A)"4E%)
POND #I SHALL BE 7.0' DEEP AND DESIGNED TO REMOVE 90% T55.
SA/DA= I .7000%
REQUIRED SURFACE AREA AT PERMANENT POOL:
SARffQ.= 0.09044 AC. = 3940 SF
SURFACE AREA PROVIDED AT PERMANENT POOL (EL. 12)= 8379 SF
4 `
SA PROV'D= 8379 > 3940 =SA REQ'D OK
MINIMUM REQUIRED VOLUME (SIMPLE METHOD BY TOM SCHUELER):
Rv=0.05+0.0094(I)
Rv= 0.464
VOLUME= I "'Rv'Ad = 0.20571 AC-FT
8961 FT^3
VOLUME PROVIDED AT TEMPORARY POOL:
I N CREIVI. TOTAL
SA (SF) VOL. (Cr) VOL. (CF) nEC E 1VE
71
2 8379 0 0
1 3 9063 872 I 872 I 11
APR 2 5 2M3
4 9 748 9406 18 126.5 BY:
' 5 I1357 ; 0507.5 28r94
Page 1 Ph3-Pond1

SET TEMP. POOL ELEVATION:
REQ'D EL.= 13.02547 +—SAY 13. 1
VOL. PROV'D = 9GG2 CF
VOL. PROV'D= 9GG2 > 89G I =VOL. REQ'D OK
FOREBAY SIZING:
PERMANENT POOL VOLUME:
INCREM. TOTAL
EL. SA (5F) VOL. (CF) VOL. (CF)
5 1017 0 0
6 I307 I162 IIG2
7 I407 1357 25I9
8 2273 1840 4359
9 3 I I 7 2695 7054
I U 3938 3528 10582 '4-- (VOL REQT MET!)
II 4835 4387 14968
12 8379 6607 21575
REQ'D VOLUME = 20% TOTAL = 21 1 6 CF
CHECK FOREBAY VOLUME:
INCREM. TOTAL
SA (SF) VOL. (CF) VOL. (CF)
8 301 0 0
9 549 425 425
10 835 G92 1117
11 128G 1061 2178 a— (VOL REQ'T MET!)
12 I8G3 1575 3752 .r
APR 25 203
PROV'D VOLUME = 2 178 CF 4.0' DEEP FOREBAY) BY:
VOL. PROV'D= 2178 --= 21 I G =VOL. REQ'D OK
Page 2 Ph3-Pond1

ORIFICE SIZING: KEQ'D DRAWDOWN TIME = 2-5 DAYS
Q2= 0.05 1855 CFS (FOR 2 DAY DRAWDOWN)
Q5= 0.020742 CFS (FOR 5 DAY DRAWDOWN)
SELECT A I - 1/2" CIRCULAR ORIFICE, EL. ' 2.0' (PERM. POOL EL.)
Q PROV'D= Cd*A*(2gh) ^ 1/2 WHERE: Cd= O.
A= 0.01227 SF
g= 32.2 FP5/5
h= AVE. HEAD =( I . I ' - (0.5) I .5"/I 2))/.
= 0.51875
Q PROV'D= 0.042552
Q2> 0.042552 >Q5 OK
DRAWDOWN TIME:
TIME = VOLUME = 2.437 DAYS
Q PROV'D
BY:
Page 3 Ph3-Pondl

WET DETENTION BASIN DATA SHEET DATE:. :: 8/.1/08
DESIGN CALCULATIONS FOR PROJECT NO..: .4 I O-03A I SW
HAWKESWATER AT PIE RIVER- PHASE-3, POND#2 DESIGNED BY: M. TACKETT
DRAINAGE AREA (Ad) = I.r094, 198 SQ. FT 25. 1.2 ACRES
IMPERVIOUS AR.EA (AI):
BUILDINGS: 1.03,500 SQ. FT :2.38 ACRES
ROADS: • 39,62I SQ. FT. 0.91 ACRES
'SIDEWALKS: 3,547 SQ. FT 0.08. ACRES
AM�NITY:
0 SQ. FT .. 0.00 ACRES
CONTINGENCY: . 509,848 SQ. FT 1 I.7.0.. ACRES
TOTAL: 656,516 SQ. FT 15.07 ACRES
PERCENT IMPERVIOUS (I):
I =.Ad/AI = 60.006% USE : 6Q%
CALCULATE REQUIRED SURFACE AREA AT PERMANENT POOL:
POND#2 SHALL HAVE A DEPTH OF 7 FEET, DESIGNED TO REMOVE 90% T55,
INTERPOLATION OF TABLE 10-3 IN. NCDENR STORMWATER:BMP MANUAL .
% IMP. DEPTH .(FT)
6.5 .7.00 . 7.5
50 . 2.30 1 .90 1 .50
60 . 2.90 2,40 1 .90
70 3.40 2.90 2.30
SA/DA= 2.40%
SARLa.= 26.7261 SF. 0.60 AC.
SURFACE AREA PROVIDED AT PERMANENT POOL = 26,592 SF
Elevatg5n = 13.0 ft. M.S.L.
A PROV'D=: 26,592. > 26,26 i = .SA REQD
•
5cr E. 'r: '�`.)l?s t POND#1
. IVFDATA SHEET
BY: PAGE I OF 4
P:44 I I O-03A I 5W -aIc51POND2Pt13-080 108
APR 2 5 2013
IIII

MINIMUM REQUIRED VOLUME (SIMPLE METHOD BY TOM SCHUELER):
Rv=0.05+O.009"(I) (Rv=0.05+0.009'"60.00)
Rv= 0.589998
VOLUME= 1°°Rv`Ad = 1 .2350293 AC-FT 53,798 PT^3
VOLUME PROVIDED AT TEMPORARY-POOL:
INCREM. TOTAL
SA (SF) VOL. (CP) VOL. (Cr)
13 2G,592 0 0
14 30,019 28,306 28,30G
15 33,512 G0, 104 G0, 104
6 37,069 G7,088 95,394
SET TEMP. POOL ELEVATION:
REQ'D EL.= 14.90
USE EL.= 15.00
VOL. PROVD = 60, 104 CF
VOL. PROV'D= 60, 104 > 53,798 = VOL. REQ'D OK
SE.P a8AO
POND#1
EC WET) DATA 511EET
PAGE 2 OF 4
P:W 1 OW 10-03A 1 5W CaIcs1POND2P113-080108 11 APR 2 5 3
BY:

FORESAY SIZING:
PERMANENT POOL VOLUME:
1NCREM. TOTAL
E1._ SA (Sr) VOL. (CF) VOL. (CF1
6 6,779 0 0
7 7,966 7,373 7,373
8 9,330 8,G48 I G,021
9 10,798 I0,064 2G,085
10 12,347 11 ,573 37,G57
11 13,984 13, 166 50,823
f 2 15,718 14,851 65,674
13 26,592 21 , 155 86,829 4-- (5A REQT MET!)
REQ'D VOLUME = 20% TOTAL = 17,3G6 CF
CHECK FOREBAY VOLUME:
INCREM. TOTAL
Fk 5A (SF) VOL. (CF) VOL. (CF)
G G02 0 0
7 966 784 784
8 1 ,405 1 , 186 1 ,970
9 1 ,920 I ,663 3,632
10 2,512 2,216 5,848
11 3, 179 2,846 8,G94
12 3,921 3,550 12,244
13 4,739 4,330 1 G,574 1-- (VOL REQ'T MET])
PROV'D VOLUME = 1 G,574 CF Q 13'
VOL. PROV'D= 16,574 -= 17,36G = VOL. REQ'D OK .
RECEIVED
r,nG
I ;cv Ei B n uuc
By; POND#1
DATA 511EET
CojE E PAGE 3 Of 4
P:1410141O-03AI5W1Cakcs1POND2PI-13-O80108 q '+
AFR
5 La
BY:

ORIFICE SIZING: REQ'D DRAWDOWN TIME = 2-5 DAYS
NOTE: ORIFICE SIZED TO DRAWDOWN THE TEMPORARY POOL IN 2-5 DAYS
02= 0.34782 CFS (FOR 2 DAY DRAWDOWN)
Q5= 0. 13913 CFS (FOR 5 DAY DRAWDOWN)
ORIFICE EL.= 13.00 (PERM. POOL EL.)
TEMP. POOL EL. = 15.00 (OUTLET EL.)
ORIFICE DIAMETER = 3.0 IN.
Q PROV'D= Cd*A*(2gh)^ 1/2 WHERE: Cd= 0.6
A= 0.04909 SF
g= 32.2 FP5/S
h= (TEMP POOL-NORMAL POOL)/3
= 0.66667
Q PROV'D= 0. 19295
Q2> O. I9295 >Q5 OK
DRAWDOWN TIME:
TIME = VOLUME = 3.60 DAYS
Q PROV'D
SE? 01310
POND#I
; -- y _�`a yz/]��---^-) DATA SHEETF.M CP : ilk h,
PAGE 4 OF 4
PM I O14I O-03A'S1MCalcs1POIVD2P113-O80 108 ,�£
It APR 25 ti,:3
BY:

WET DETENTION BASIN DATA SHEET
HAWKESWATER PHASE 3
POND #3
DRAINAGE AREA (Ad) = 0.97 ACRES
IMPERVIOUS AREA (Ai):
BUILDINGS: 0.24 ACRES
ROADS: 0.31 ACRES
SIDEWALKS: 0.00 ACRES
OFF-SITE 0.00 ACRES
CONTINGENCY: 0.00 ACRES
TOTAL: 0.55 ACRES
PERCENT IMPERVIOUS (I):
I = Ad/Ai = 5 6.70% (SAY'57%)
POND#3 SHALL 5E 4.0' DEEP AND DESIGNED TO REMOVE 90% T5S.
SA/DA= 5.0000%
REQUIRED SURFACE AREA AT PERMANENT POOL:
5AREQ,= 0.0485 AC. = 2113 5F
SURFACE AREA PROVIDED AT PERMANENT POOL (EL. 10)= 4026 5F
SA PROV'D= 4026 > 2 113 =SA REQ'D OK
MINIMUM REQUIRED VOLUME (SIMPLE METHOD BY TOM SCHUELER):
Rv=0.05+0.009"(I)
Rv= 0.563
VOLUME= I "`Rv"Ad = 0.0455 I AC-FT
1982 FT^3
VOLUME PROVIDED AT TEMPORARY POOL:
INCREM. TOTAL
F! 5A (5F) VOL. (CF) VOL. (CF) _
10 4026 0 0 ��-
y.
II 473I 4379 4379
12 56 18 5 175 9553 4 APR 2 5 2313
BY:
Pagel Ph3-Pond3

5ET TEMP. POOL ELEVATION:
REQ'D EL.= i 0.45275 f--SAY 10.5
VOL. PROV'D = 4379 Cr
VOL. PROV'D= 4379 > 1982 =VOL. REQ'D OK
FOREBAY SIZING:
PERMANENT POOL VOLUME:
INCREM. TOTAL
EL. SA (Sr) VOL. (CF) VOL. (Cr)
6 265 0 0
7 599 432 432
8 1018 809 124I
9 1596 1307 2548 f-- (VOL REQ'T MET!)
I0 4026 2811 5359
REQ'D VOLUME = 20% TOTAL = 5 I 0 Cr
CHECK FOREBAY VOLUME:
INCREM. TOTAL
J_ SA (SF) VOL. (Cr) VOL. (CF)
7 14 0 0
8 I08 6I 61
9 276 I92 253
I 0 5 19 398 651 I- (VOL REQ'T MET!)
II APR 2 5 2ti 3
PROV'D VOLUME = G5 I Cr (3' DEEP FOREBAY) BY:
VOL. PROV'D= 65 I 5 I =VOL. REQ'D OK
Page 2 Ph3-Pond3

ORIFICE SIZING: REQ'D DRAWDOWN TIME = 2-5 DAYS
Q2= 0.0 11472 CFS (FOR 2 DAY DRAWDOWN)
Q5= 0.004589 CFS (FOR 5 DAY DRAWDOWN)
SELECT A I .0" CIRCULAR ORIFICE, EL. 10' (PERM. POOL EL.)
Q PROV'D= Cd'Ae(2gh)^ 1/2 WHERE: Cd= 0.G
A= 0.0055 SF
g= 32.2 FP5/S
h= AVE. HEAD =(I .0' - (0.5)( I .0"/12)),
= 0.4792
Q FROV'D= 0.0I 8332
Q2> 0.015332 >Q5 OK
DRAWDOWN TIME:
TIME = VOLUME = 1 .251 58 DAYS
Q PROV'D
PLECE:VED
11�YK
APR 25 233
BY:,
Page 3 Ph3-Pond3

WET DETENTION BASIN DATA SKEET
HAWKESWATER PHASE 3
POND #4
DRAINAGE AREA (Ad) = 5.68 ACRES
IMPERVIOUS AREA (Ai):
BUILDINGS: I .40 ACRES
ROADS: I .63 ACRES
SIDEWALKS: 0.00 ACRES
OFF-SITE 0.00 ACRES
CONTINGENCY: 0.00 ACRES
TOTAL: 3.03 ACRES
PERCENT IMPERVIOUS (I):
I = Ad/Ai = 53.35% (SAY54%)
POND#4 SHALL BE 4.0' DEEP AND DESIGNED TO REMOVE 90% T55.
SA/DA= 4.7000%
REQUIRED SURFACE AREA AT PERMANENT POOL:
SAREQ.= 0.26696 AC. = I I629 SF
SURFACE AREA PROVIDED AT PERMANENT POOL (EL.B)= 23433 SF
SA PROV'D= 23433 > 11629 =SA REQ'D OK
MINIMUM REQUIRED VOLUME (SIMPLE METHOD BY TOM SCHUELER):
Rv=0.05+0.0094(I)
Rv= 0.536
VOLUME= I ""Rv'Ad = 0.2537 I AC-FT
= 1 105 I .5 FT^3
VOLUME PROVIDED AT TEMPORARY POOL:
INCREM. TOTAL
E!.. SA (SF) VOL. (CF) VOL. (CF) t r r,,,,�-
8 23433 0 0 � '
9 2542 I 24427 24427 ' APR 5 � 3
10 27466 26443.5 50870.5
BY:
Page 1 Ph3-Pond4

SET TEMP POOL ELEVATION:
REQ'D EL.= 8.45 2428 4i--SAY 8.5
VOL. PROV'D = 24427 CF
VOL. PROV'D= 24427 > 1105I .5 =VOL. REQ'D OK
FOREDAY SIZING:
PERMANENT POOL VOLUME:
INCREM. TOTAL
5A (5P) VOL. (Cr) VOL. (CP)
4 11285 0 0
5 13785 12535 12535
1 547 I 14G28 27 163 4— (VOL REQT MET!)
7 I7214 IG343 43506
8 23433 20324 63829
REQ'D VOLUME = 20% TOTAL = 5433 CP
CHECK POREBAY VOLUME:
INCREM. TOTAL
EJ� 5A (5P) VOL. (CP) VOL. (CP)
5 2240 0 0
6 2932 2586 2586
7 3695 3314 5900 1— (VOL REQT MET!)
8 457G 4I3G 10035
PROV'D VOLUME = 5900 CP (3' DEEP FOREBAY)
VOL. PROV'D= 5900 = 5433 =VOL. REQ'D OK
C E r i
Page 2 Ph3-Pond4

ORIFICE SIZING: REQ'D DRAWDOWN TIME = 2-5 DAYS
Q2= 0.063555 CF5 (FOR 2 DAY DRAWDOWN)
Q5= 0.025582 CFS (FOR 5 DAY DRAWDOWN)
SELECT A I .5" CIRCULAR ORIFICE, EL. 8.0' (PERM. POOL EL.)
Q PROV'D= Cd*A*(2gh) ^ 1/2 WHERE: Cd= 0.6
A= 0.0123 SF
32.2 FPS/5
h= AVE. HEAD =(0.5' - (0.5)( I .5"/I 2)),
= 0.2188
Q PROV'D= 0.027703
Q2> 0.027703 >Q5 OK
DRAWDOWN TIME:
TIME = VOLUME = 4.G 1725 DAYS
Q PROVE)
piECE,EVE",
APR 2 5 23
BY
Page 3 Ph3-Pond4

WET DETENTION BASIN DATA SHEET
hAWKESWATER PHASE 3
POND #5•
DRAINAGE AREA (Ad) = 9.08 ACRES
IMPERVIOUS AREA (At):
BUILDINGS: 2.23 ACRES
ROADS: 2.53 ACRES
SIDEWALKS: 0.00 ACRES
OFF-SITE 0.00 ACRES
CONTINGENCY: 0.00 ACRES
TOTAL: 4.76 ACRES
PERCENT IMPERVIOUS (I):
I = Ad/Ai = 52.42% (5AY53%)
POND#5 SHALL BE 7.0' DEEP AND DESIGNED TO REMOVE 90% TSS.
SA/DA= 2. 1000%
REQUIRED SURFACE AREA AT PERMANENT POOL:
5AREQ.= 0. 19068 AC. = 8306 SF
SURFACE AREA PROVIDED AT PERMANENT POOL (EL. I 3)= 10285 SF
SA PROV'D= 10285 > 8306 =SA REQ'D OK
MINIMUM REQUIRED VOLUME (SIMPLE METHOD BY TOM SChUELER):
Rv=0.05+0.009"(I)
Rv= 0.527
VOLUME= I "*Rv`Ad = 0.3987G AC-FT
= 17370. 1 FT^3
VOLUME PROVIDED AT TEMPORARY POOL:
INCREM. TOTAL
EL. SA (SF) VOL. (Cr) VOL. (CF)
I3 I0285 0 0 ECEVVE71
14 11485 I0885 I0885
15 12732 12 108.5 22993.5 /1APR 2 5 203
16 14079 13405.5 36399
BY:_
Page 1 Ph3-Pond5

SET TEMP. POOL ELEVATION:
REQ'D EL.= 14.59579 4--SAY 14.6
VOL. PROV'D = 22994 CF
VOL. PROV'D= 22993.5 > 17370. 1 =VOL. REQ'D OK
FOREBAY SIZING:
PERMANENT POOL VOLUME:
1NCREM. TOTAL
SA (SF) VOL. (CF) VOL. (CF)
3461 0 0
7 3938 3700 3700
8 4443 4191 7890
9 4977 4710 12600
10 5540 5259 17859
I I 6 13 I 583G 23694 i-- (VOL REQT MET!)
12 6752 6442 30136
13 10285 8519 35654
REQ'D VOLUME = 20% TOTAL = 4739 CF
CHECK FOREBAY VOLUME:
INCREM. TOTAL
SA (SF) VOL. (CF) VOL. (CF)
9 584 0 0
10 880 732 732
II I235 1058 1790
12 1651 1443 3233
13 2 120 1586 5 I 1 8 '4-- (VOL REQT MET!)
PROV'D VOLUME = 5 118 CF (4' DEEP FOREBAY)
VOL. PROV'D= 51 18 4739 =VOL. REQ'D OK
9V
Page 2 1 APR 2 5 203 Ph3-Pond5

ORIFICE SIZING: REQ'D DRAWDOWN TIME = 2-5 DAYS
02= 0. 100522 CF5 (FOR 2 DAY DRAWDOWN)
Q5= 0.040209 CFS (FOR 5 DAY DRAWDOWN)
SELECT A I .5" CIRCULAR ORIFICE, EL. I 3.0' (PERM. POOL EL.)
Q PROV'D= Cd*A*(2gh) ^ 1/2 WHERE: Cd= 0.6
A= 0.0I 23 SF
g= 32.2 FPS/5
h= AVE. HEAD =( I .6' - (0.5)(1 .5"/1 2)),
= 0.7688
Q PROV'D= 0.05 1929
Q2> 0.05I929 >Q5 OK
DRAWDOWN TIME:
TIME = VOLUME = 3.871 54 DAYS
Q PROV'D
APR 2 5 2 r3 .
Page 3 Ph3-Pond5

WET DETENTION BASIN DATA SHEET
HAWKESWATER PHASE 3
POND #6
DRAINAGE AREA (Ad) = 9.33 ACRES
IMPERVIOUS AREA (Ai):
BUILDINGS: I .50 ACRES
ROADS: I .35 ACRES
SIDEWALKS: 0.00 ACRES
OFF-SITE 0.00 ACRES
CONTINGENCY: 0.00 ACRES
TOTAL: 2.55 ACRES
PERCENT IMPERVIOUS (I):
= Ad/Ai = 30.55% (SA Y3/%)
POND#6 SHALL BE 5.0' DEEP AND DESIGNED TO REMOVE 907o T55.
SA/DA= 2.2600%
REQUIRED SURFACE AREA AT PERMANENT POOL:
SARffQ.= 0.2I0858 AC. = 9165 SF
SURFACE AREA PROVIDED AT PERMANENT POOL (EL.6)= 10116 SF
SA PROV'D= 1 01 16 > 9155 =SA REQ'D OK
MINIMUM REQUIRED VOLUME (SIMPLE .METHOD BY TOM SCHUELER):
Rv=0.05+0.009*(I)
Rv= 0.329
VOLUME= I "Rv"Ad = 0.2558 AC-FT
= I 1 142.5 FT^3
VOLUME PROVIDED AT TEMPORARY POOL:
INCREM. TOTAL
L... SA. (SF) VOL. (Cr) VOL. (Cr)
6 101i6 0 0 ;VET
7 1 1 335 10725.5 10725.5
8 126 10 11972.5 22698 2 5 2 3
Page 1 Ph3-Pond6

SET TEMP. POOL ELEVATION
REQ'D EL.= 7.034833 i--SAY 7.0
VOL. PROV'D = 22698 CF
VOL. PROV'D= 22698 > 11142.5 =VOL. REQ'D OK
FOREBAY SIZING:
PERMANENT POOL VOLUME:
INCREM. TOTAL
F�(y SA (SF) VOL. (Cr) VOL. (Cr)
I 290G 0 0
2 3710 3308 3308
3 4571 4141 7449
4 5488 5030 12478
5 6462 5975 18453
101 I G 8289 26742 i— (VOL REQ'T MET!)
REQ'D VOLUME = 20% TOTAL = 5348 Cr
CHECK FOREBAY VOLUME:
INCREM. TOTAL
EL. SA (SF) VOL. (Cr) VOL. (Cr)
2 666 0 0
3 998 832 832
4 1405 1202 2034
5 1902 1654 3687
2456 2179 5866 II-- (VOL REQT MET!)
PROV'D VOLUME = 5866 Cr (4' DEEP FOREBAY)
VOL. PROV'D= 5866 —= 5348 =VOL. REQ'D OK
Page 2 R APR 2 5 2 , Ph3-Pond6
I.

ORIFICE SIZING: REQ'D DRAWDOWN TIME = 2-5 DAYS
Q2= 0.064482 CFS (FOR 2 DAY DRAWDOWN)
Q5= 0.025793 CFS (FOR 5 DAY DRAWDOWN)
SELECT A I .5" CIRCULAR ORIFICE, EL. 6.0' (PERM. POOL EL.)
Q PROV'D= Cd`A"(2gh)^ 1/2 WHERE: Cd= 0.6
A= 0.0123 SF
g= 32.2 FPS/S
h= AVE. HEAD =(I .0' - (0.5)( I .5"/1 2)),
= 0.4688
Q PROV'D= 0.04055
Q2> 0.04055 >Q5 OK
DRAWDOWN TIME:
TIME = VOLUME = 3. 18037 DAYS
Q PROV'D
!' I :
Qe rR 2 5 2'13
Page 3 Ph3-Pond6

WET DETENTION BASIN DATA SHEET . . .:DATE: 8/1/08
DESIGN CALCULATIONS•FOR :PROJECT:NO.: 4 I 0-03A 1 5W
HAWKESWATER AT THE RIVER PHASE-3, POND#7 DESIGNED BY: M. TACKETT
DRAINAGE AREA (Ad) = 192,971 SQ. FT 4.43 ACRES
IMPERVIOUS AREA (Al):
BUILDINGS: 58,054 SQ. FT. . 1 .33 ACRES
ROADS: 29,06E . 5Q. FT 0..67 ACRES
SIDEWALKS: 0 SQ. FT 0.00 ACRES
AMENITY: 0 SQ. FT 0.00 ACRES
CONTINGENCY: 0 SQ. FT .. 0.00 ACRES
TOTAL: 57,120 SQ. FT 2.00 ACRES
PERCENT IMPERVIOUS (I):
I = Ad/Ai 45. 1 5% USE - 46%
CALCULATE REQUIRED SURFACE AREA AT PERMANENT POOL:
POND#7 SHALL HAVE AN DEPTH OF G FEET, DESIGNED TO REMOVE 90% TSS.
INTERPOLATION OF TABLE 10-3 IN NCDENR.STORMWATER 5MP MANUAL
IMP. DEPTH (FT)% .. .
4.5 , 5.00 . 5.5
40 .3. 10 2.80 2.50
46 3.58 3.22 2.86
50 3.90 3.50 3. 10
SA/DA= 3.22%
SAREQ.= 6.,214 SF. = 0. 14 AC
SURFACE,AREA PROVIDED AT PERMANENT POOL =. 7,486 5F
Elevation: = 6.0 ft. M.S.L.
5A PROV'D= 7:486 > G,214 = SA RFQ'D. OK
RECEIVED..
SE). 0 8 agO$. POND #1
DATA SHEET
PM!Oh4I O-03A!SW1CaIcs\POND7Ph13-080 i 08 BY:-
1 . APR 2 5 2 a3
BY:�

MINIMUM REQUIRED VOLUME (SIMPLE METHOD BYTOM SCI1UELER):
Rv=0.05+0.009*(I) (Rv=0.05+0.009*45. 1 5)
Rv= 0.4G4
VOLUME= I "*Rv*Ad = 0. 171 2933 AC-FT
7,4G2 FT^3
VOLUME PROVIDED AT TEMPORARY POOL:
INCREM. TOTAL
EL SA (SF) VOL. (CF) VOl . (CF)
7,48G 0 0
ti•
7 9,387 8,437 8,437
8 11 ,468 18,954 18,954
•
SET TEMP. POOL ELEVATION:
REQ'D EL.= G.90
USE EL.= G.90
VOL. PROV'D = 7,593 Cr
VOL. PROV'D= 7,593 > 7,462 = VOL. REQ'D OK
•
RECEIVED
SE? 0 8 2808
POND#1
_ ,,� - ,� DATA SKEET
PAGE 20F4
•
PM 10\4 I O-03A I SWWCalcs\POND7PFi3-O80/08 AP
BY:

FOREBAY SIZING:
PERMANENT POOL VOLUME:
INCREM, TOTAL
ZL.. SA (Sr) VOL. (CF) VOL. (Cr)
0 127 0 0
1 358 243 243
2 698 528 771
3 1 ,528 1 , 113 1 ,884
4 2,37G 1 ,952 3,836
5 3,423 2,900 6,735
6 7,486 5,455 12, 190 4_ (SA REQT METI)
REQ'D VOLUME = 20% TOTAL = 2,438 Cr
CHECK FOREBAY VOLUME:
INCREM. TOTAL
EL SA (Sr) VOL. (Cr) VOL. (Cr)
3 380 0 0
4 666 523 523
5 1 ,030 848 I ,371
G 1 ,477 1 ,254 2,625 i— (VOL REQ'T MET.)
PROV'D VOLUME = 2,G25 Cr @ 6.00'
1
VOL. PROV'D= 2,625 —= 2,438 = VOL. REQ'D OK
` su, gbNut. 1ii
\131:1„-------- -7--:— POND #1
. .:. .. DATA SHEET
PAGE 3 OF 4
P:\4I014I 0-03A I SW'CaIcs1POIVD7PI-13-080I 08 ' ' APR 2 5 2113 s
Dt
BY.

ORIFICE SIZING: REQ'D DRAWDOWN TIME = 2-5 DAYS
NOTE: ORIFICE SIZED TO DRAWDOWN THE TEMPORARY POOL IN 2-5 DAYS
02= 0.04394 CFS (FOR 2 DAY DRAWDOWN)
05= 0.01758 CFS (FOR 5 DAY DRAWDOWN)
ORIFICE EL.= G.00 (PERM. POOL EL.)
TEMP. POOL EL. = 6.90 (OUTLET EL.)
ORIFICE DIAMETER = 1 .50 IN.
Q PROV'D= Cd*A*(2gh)^ 1/2 WhERE: Cd= 0.6
A= 0.01227 5F
g= 32.2 FP5/S
h= (TEMP POOL-NORMAL POOL)/3
= 0.30000
Q PROV'D= 0.0323G
Q2> 0.03236 >Q5 OK
DRAWDOWN TIME:
•
TIME = VOLUME = 2.72 DAYS
Q PROV'D
RECTE3D).\
SEV ti30t;
BY� POND#
DATA SHEET
PAGE 4 OF 4
PM 1044 I0-03A I SW\Calc51120ND7PI'13-0801 OS _ MR 2 Y
6� L t
SY: