SW6080402_CURRENT PERMIT_20080602

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO. SW ULLy�oa,
DOC TYPE CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE , 2k��,
YYYYMMDD

I .
of wn rF9
\QC� DG Michael F. Easley, Governor
�J William G. Ross Jr., Secretary
] North Carolina Department of Environment and Natural Resources ,
O �
Coleen H. Sullins, Director
Division of Water Quality
June 2, 2008
Mr. Joseph Crossman
307 Coventry Court
Hollidaysburg, PA 16648 JUL $ 2iiu3
Subject: Stormwater Permit No. SW6080402 ®WQ
West Manchester Industrial Park
High Density Commercial Wet Pond Project
Cumberland County
Dear Mr. Grossman:
The Stormwater Permitting Unit received a complete Stormwater Management Permit
Application for West Manchester Industrial Park on May 28, 2008. Staff review of the
plans and specifications has determined that the project, as proposed, will comply with
the Stormwater Regulations set forth in Title 15A NCAC 2H.1000 and Session Law
2006-246. We are forwarding Permit No. SW6080402, dated June 2, 2008, for the
construction of the subject project.
This permit shall be effective from the date of issuance until June 1, 2018, and shall be
subject to the conditions and limitations as specified therein. Please pay special
attention to the Operation and Maintenance requirements in this permit. Failure to
establish an adequate system for inspection and maintenance of the stormwater
management system will result in future compliance problems.
If any parts, requirements, or limitations contained in this permit are unacceptable, you
have the right to request an adjudicatory hearing upon written request within sixty (60)
days following receipt of this permit. This request must be in the form of a written
petition, conforming to Chapter 150E of the North Carolina General Statutes, and filed
with the Office of Administrative Hearings, P.O. Drawer 27447, Raleigh, NC 27611-
7447. Unless -such demands are made this permit shall be final and binding.
This project will be kept on file at the Fayetteville Regional Office. If you have any
questions, or need additional information concerning this matter, please contact Robert
Patterson at [phone], extension 360; or [e-mail].
Sincerely,
for Coleen H. Sullins
cc: Mr. Scott Brown, PE, 4D Site Solutions, Inc, 409 Chicago Dr, Ste 112,
Fayetteville, NC 28306
Fayetteville Regional Office
Central Files One
SPU Files No Carolina
�vaturn//y
North Carolina Division of Water Quality 1617 Mail Service Center Raleigh, NC 27699-1617 Phone (919) 733 Internet: www ncwalcro a-5083 Customer Service
rty o g Location: 512 N. Salisbury St. Raleigh, NC 27604 Fax 919
( ) 733-9612 1-877-623-6748
An Equal Opportunity/Affirmative Action Employer— 50% Recyc ed/im Post Consumer Paper

State Stormwater Permit
Permit No.SW6080402
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
HIGH DENSITY 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
Mr. Joseph Grossman
West Manchester Industrial Park
West Manchester Road, Spring Lake, Cumberland County
FOR THE
construction, operation and maintenance of a wet detention pond in compliance with
the provisions of 15A NCAC 2H .1000 and S.L. 2006-246 (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 June 1, 2018, 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 1.6 on page 3 of this permit. The stormwater
control has been designed to handle the runoff from 93,209 square feet of
impervious area.
3. The tract will be limited to the amount of built -upon area indicated on page 3 of
this permit, and per approved plans.
4. All stormwater collection and treatment systems must be located in either
dedicated common areas or recorded easements. The final plats for the project
will be recorded showing all such required easements, in accordance with the
approved plans.
5. The runoff from all built -upon area within the permitted drainage area of this
project must be directed into the permitted stormwater control system.
Page 1 of 6

State Stormwater Permit
Permit No.SW6080402
6. The following design criteria have been provided in the wet detention pond and
must be maintained at design condition:
a. Drainage Area, aps: 4.01
Onsite, ft : 174,760
Offsite, ft2: 0
b. Total Impervioys Surfaces, ft2: 93,209
Buildings ft : 48,000
Roads/Parking, ft2: 9,084
Other, ft2. 0
Offsite, ftz: 0
C. Pond Depth, feet: 3.4
d. TSS removal efficiency: 90%
e. Design Storm: 1.0 inch
f. Permanent Pool Elevation, FMS�: 165.80
g. Permitted Surface Area @PP ft : 16,580
h. Permitted Storage Volume, ft�: 11,756 at temporary pool
i. Storage Elevation, FMSL: 166.50
j. Controlling Orifice: 2.0"0 pipe
k. Permanent Pool Volume, ft3: 56,025
I. Forebay Volume, ft3: 11,745
m. Receiving Stream/River Basin: Tank Creek / Cape Fear
n. Stream Index Number: 18-23-27
o. Classification of Water Body: "C"
II. SCHEDULE OF COMPLIANCE
1. 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.
2. During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately.
3. The permittee shall at all times provide the operation and maintenance
necessary to assure the permitted stormwater system functions 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 revegetation of slopes and the vegetated filter.
d. Immediate repair of eroded areas.
e. Maintenance of all slopes in accordance with approved plans and
specifications.
f. Debris removal and unclogging of outlet structure, orifice device, flow
spreader, catch basins and piping.
o. Access to the outlet structure must be available at all times.
4. 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.
The facilities shall be constructed as shown on the approved plans. This permit
shall become voidable unless the facilities are constructed in accordance with
the conditions of this permit, the approved plans and specifications, and other
supporting data.
Page 2 of 6

State Stormwater Permit
Permit No.SW6080402
6. 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. A
modification may be required for those deviations.
7. 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.
8. Access to the stormwater facilities shall be maintained via appropriate
easements at all times.
9. 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 any item shown on the approved plans, including the
stormwater management measures, built -upon area, details, etc.
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area or to the
drainage area.
e. Further subdivision, acquisition, lease or sale of all or part of the project
area. The project area is defined as all property owned by the permittee,
for which Sedimentation and Erosion Control Plan approval or a CAMA
Major permit was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the
approved plan.
10. The permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans, prior to construction.
11. 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.
12. 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.
III. GENERAL CONDITIONS
This permit is not transferable except after notice to and approval by the Director.
In the event of a change of ownership, or a name change, the permittee must
submit a completed Name/Ownership Change form, to the Division of Water
Quality, signed by both parties, and accompanied by supporting documentation
as listed on page 2 of the form. The project must be in good standing with the
Division. 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 permit conditions until such
time as the Division approves the transfer request.
Page 3 of 6

State Stormwater Permit
Permit No.SW6080402
3. Failure to abide by the conditions and limitations contained in this permit may
subject the Permittee to enforcement action by the Division of Water Quality, in
accordance with North Carolina General Statute 143-215.6A to 143-215.6C.
4. The issuance of this permit does not preclude the Permittee from complying with
any and all statutes, rules, regulations, or ordinances, which may be imposed by
other government agencies (local, state, and federal).having jurisdiction.
5. In the event that the facilities fail to perform satisfactorily, including the creation
of nuisance conditions, the Permittee shall take immediate corrective action,
including those as may be required by this Division, such as the construction of
additional or replacement stormwater management systems.
6. The permittee grants DENR Staff permission to enter the property during normal
business hours for the purpose of inspecting all components of the permitted
stormwater management facility.
7. The permit issued shall continue in force and effect until revoked or terminated.
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. Unless specified elsewhere, permanent seeding requirements for the stormwater
control must follow the guidelines established in the North Carolina Erosion and
Sediment Control Planning and Design Manual.
9. Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of the permit.
10. The issuance of this permit does not prohibit the Director from reopening and
modifying the permit, revoking and reissuing the permit, or terminating the permit
as allowed by the laws, rules and regulations contained in Session Law 2006-
246, Title 15A NCAC 2H.1000, and NCGS 143-215.1 et.al.
11. The permittee shall notify the Division of any name, ownership or mailing
address changes at least 30 days prior to making such changes.
Permit issued this the 2"d day of June, 2008.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Division of Water Quality
By Authority of the Environmental Management Commission
Page 4 of 6

State Stormwater Permit
Permit No.SW6080402
West Manchester Industrial Park
Stormwater Permit No. SW6080402
Cumberland County
Designer's Certification
1, , as a duly registered
in the State of North Carolina, having been authorized to observe (periodically/ weekly/
full time) the construction of the project,
West Manchester Industrial Park
(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 included in the Certification.
Noted deviations from approved plans and specification:
Signature
Registration Number
Date
SEAL
Page 5 of 6

State Stormwater Permit
Permit No.SW6080402
Certification Requirements:
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,
and a forebay.
15. The required system dimensions are provided per the approved plans.
Please submit this Designer's Certification to: Fayetteville Regional Office
Surface Water Protection
225 Green Street
Systel Building Suite 714
Fayetteville, NC 28301-5043
Page 6 of 6

} A I State Stormwater Permit
�Permit No.SW6080402
i� West Manchester Industrial Park
Stormwater Permit No. SW6080402
Cumberland County
Designer's Certification
I, C. <e.4 3/0 0 a , as a duly registered C; r" 1 Cnq;,, ectr
in the State of North Carolina, having been authorized to observe (pen'bdically/ weekly/
full time) the construction of the project,
West Manchester Industrial Park
(Project)
for Sg- CrossM at4 (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 included in the Certification.
Noted deviations from approved plans and specification:
At 5r455:n3 Q/,)nS %hf Pon 51075 4 1)-4 e4oQl'sw VJ
— MQy feq,��rc,2 SGnr;�y�.�s � f25t�d�np
Signature _ C L;* 4,
Registration Number 271(5-Z
Date /-
DEMR—FR®
JAN 12 20id
DWO
Page 5 of 6
!`yy"1>t
"'W" ,,,
SEAL
=
027452 -
.,
TM ox `

State Stormwater Permit ^
Permit No.SW6080402
Certification Requirements:
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.
r/ 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.
Na ff 7. Trash rack is provided on the outlet/bypass structure.
esgtA48. All slopes are grassed with permanent vegetation.
✓g. Vegetated slopes are no steeper than 3:1.
r✓ 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.
+­113. All required design depths are provided.
✓14. All required parts of the system are provided, such as a vegetated shelf,
and a forebay.
15. The required system dimensions are provided per the approved plans.
Please submit this Designer's Certification to: Fayetteville Regional Office
Surface Water Protection
225 Green Street
Systel Building Suite 714
Fayetteville, NC 28301-5043
GEMR-FRO
®WQ
Page 6 of 6

DWQ USE ONLY
Date Received
Fee Paid
Permit Number
S�✓6ogoL/oL �
State of North Carolina a
Department of Environment and Natural Resources
Division of Water Quality o �m
N CYR
STORMWATER MANAGEMENT PERMIT APPLICATION FORD "'
This form maybe photocopied for use as an original t� N 3N
Q �I
� zcf
I. GENERAL INFORMATION `— o2
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
Joseph Crossman
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
Joseph Crossman - managing partner
3. Mailing Address for person listed in item 2 above:
307 Coventry Court
City:Hollidaysburg State:PA Zip:16648
Phone: (814 ) 696-3759 Fax: (814 ) 696-9193
EmaiCccmjoeC verizon.net
4. Project Name (subdivision, facility, or establishment name -should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
West Manchester Industrial Park
5. Location of Project (street address):
3,361 LF west of intersection of W. Manchester Road 8r Bragg Boulevard along W Manchester Road
City:Spring Lake County:Cumberland Zip:
6. Directions to project (from nearest major intersection):
Go approximately 3,361 LF west on W. Manchester Road from the intersection of Bragg Boulevard and W
Manchester Road towards Ft Bragg. Site will be on the south side of the road
7. Latitude:35° 11' 21.23" N Longitude:78° 59' 48.83" W of project
8. Contact person who can answer questions about the project:
Name:Scott Brown Telephone Number: (910 ) 426-6777 ext. 102
Email:[e-mail]
Q. PERMIT INFORMATION:
1. Specify whether project is (check one): ®New Renewal ❑Modification
Form SWU-101 Version 02.19.08 Page I of

2. If this application is being submitted as the result of a renewal or modification to an existing permit, list the
existing permit number and its issue date (if known)
3. Specify the type of project (check one):
❑Low Density ®High Density ❑Redevelop [—]General Permit ❑Universal SMP ❑Other
4. Additional Project Requirements (check applicable blanks, information on required state permits can be
obtained by contacting the Customer Service Center at 1-877-623-6748):
❑CAMA Major ®Sedimentation/Erosion Control ❑404/401 Permit ❑NPDES Stormwater
III. PROJECT INFORMATION
1. In the space provided below, summarize how stormwater will be treated. Also attach a detailed narrative
(one to two pages) describing stormwater management for the project.
Storm water will be treated by wet ponds.
2. Stormwater runoff from this project drains to the Cape River basin.
3. Total Property Area: 7.79 acres 4. Total Wetlands Area: 0.26 acres
5. 100' Wide Strip of Wetland Area: 1_1 acres (not applicable if no wetlands exist on site)
6. Total Project Area**:7.79 acres 7. Project Built Upon Area:27.5 qo
8. How many drainage areas does the project have?2
N
Complete the following information for each drainage area. If there are more than two drainage areas in the
project, attach an additional sheet with the information for each area provided in the same format as below.
For high density projects, com lete the table with one drainage area for each engineered stormwater device.
Basin Information
Drainage Area 1
Drainage Area 2
Receiving Stream Name
Tank Creek
Stream Class & Index No.
Class C & 18-23-27
Total Drainage Area (so
174,760
On -site Drainage Area (so
174,760
Off -site Drainage Area (so
0
Existing Impervious* Area (so
0
0
Proposed Impervious*Area (so
93,209
% Impervious* Area (total)
53.3
Impervious* Surface Area
Drainage Area 1
Drainage Area 2
On -site Buildings (so
48,000
On -site Streets (sf)
36,125
On -site Parking (so
9,084
On -site Sidewalks (so
0
Other on -site (so
0
Off -site (so
0
Total (so
93,209
* Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
**Total project area shall be calculated based on the current policy regarding inclusion of wetlands in the built upon area
percentage calculation. This is the area used to calculate percent project built upon area (BUA).
Form SWU-101 Version 02.19.08 Page 2 of 4

10. How was the off -site impervious area listed above derived?There is no off site impervious area draining onto
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
One of the following deed restrictions and protective covenants are required to be recorded for all subdivisions,
outparcels and future development prior to the sale of any lot. If lot sizes vary significantly, a table listing each lot
number, size and the allowable built -upon area for each lot must be provided as an attachment. Forms can be
downloaded from http://h2o.enr.state.nc.us/Su/bmp forms.htm -deed restrictions.
Form DRPC-1
High Density Commercial Subdivisions
Form DRPC-2
High Density Developments with Outparcels
Form DRPC-3
High Density Residential Subdivisions
Form DRPC4
Low Density Commercial Subdivisions
Form DRPC-5
Low Density Residential Subdivisions
Form DRPC-6
Low Density Residential Subdivisions with Curb Outlets
By your signature below, you certify that the recorded deed restrictions and protective covenants for this
project shall include all the applicable items required in the above form, that the covenants will be binding
on all parties and persons claiming under them, that they will run with the land, that the required covenants
cannot be changed or deleted without concurrence from the State, and that they will be recorded prior to the
sale of any lot.
V. SUPPLEMENT FORMS
The applicable state stormwater management permit supplement form(s) listed below must be submitted for each
BMP specified for this project. Contact the Stormwater and General Permits Unit at [phone] for the status
and availability of these forms. Forms can be downloaded from http://h2o.enr.state.nc.us/su/bmp forms.htm.
Form SW401-Low Density
Form SW401-Curb Outlet System
Form SW401-Off-Site System
Form SW401-Wet Detention Basin
Form SW401-Infiltration Basin
Form SW401-Infiltration Trench
Form SW401-Bioretention Cell
Form SW401-Level Spreader
Form SW401-Wetland
Form SW401-Grassed Swale
Form SW401-Sand Filter
Form SW401-Permeable Pavement
Low Density Supplement
Curb Outlet System Supplement
Off -Site System Supplement
Wet Detention Basin Supplement
Infiltration Basin Supplement
Underground Infiltration Trench Supplement
Bioretention Cell Supplement
Level Spreader/Filter Strip/Restored Riparian Buffer Supplement
Constructed Wetland Supplement
Grassed Swale Supplement
Sand Filter Supplement
Permeable Pavement Supplement
Form SWU-101 Version 02.19.08 Page 3 of

VI. SUBMITTAL REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ).
A complete package includes all of the items listed below. The complete application package should be
submitted to the appropriate DWQ Office. (Appropriate office may be found by locating project on the
interactive online map at http:/1h2o.enestate.nc.us/su/nisi nians.htni)
1. Please indicate that you have provided the following required information by initialing in the space provided
next to each item
Initials
• Original and one copy of the Stormwater Management Permit Application Form
54
• Original and one copy of the Deed Restrictions & Protective Covenants Form (if
NA
required as per Part IV above)
• Original of the applicable Supplement Form(s) and O&M agreement(s) for each BMP
513
• Permit application processing fee of $505 ($4,000 for Express) payable to NCDENR
513
• Calculations & detailed narrative description of stormwater treatment/management
513
• Copy of any applicable soils report
5(9
• Two copies of plans and specifications (sealed, signed & dated), including:
5�3
- Development/Project name
- Engineer and firth
-Legend
- North arrow
- Scale
- Revision number & date
- Mean high water line
- Dimensioned property/project boundary
- Location map with named streets or NCSR numbers
- Original contours, proposed contours, spot elevations, finished Floor elevations
- Details of roads, drainage features, collection systems, and stormwater control measures
- Wetlands delineated, or a note on plans that none exist
- Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations
- Drainage areas delineated
- Vegetated buffers (where required)
VII. AGENT AUTHORIZATION
If you wish to designate authority to another individual or firm so that they may provide information on your
behalf, please complete this section. (ex. designing engineer or firm)
Designated agent (individual or firm)AD Site Solutions, Inc
Mailing Address:409 Chicaog Drive, Suite 112
City:Fayetteville State:NC Zip:28306
Phone: [phone] Fax: [phone]
Email:[e-mail]
VIII. APPLICANTS CERTIFICATION
I, (print or type name of person listed in General Information, item 2) foe Crossman
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 cove i�ts will be recorded, and that the proposed project complies with the requirements of 15A
NCAC 2H .1000h / 1/,
Date: / C/
Form SWU-101 Version 02.19.08 Page 4 of

Permit No..s 6V6 O 5' O `i OL
(to be provided by DWQ)
o2a WAiFq�
NCDENR i
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Hems Checklist (Pad 111) must be printed, filled out and submitted along with all of the, required information.
I. PROJECT INFORMATION
Project name West Manchester Industrial Park
Contact person Sinn Brown
Phone number 910426-0777 z 102
Date 20-May-08
Drainage area number 1
Ill. 1Jca1Unn1rvnmA11UN
Site Characteristic
Drainage area
Impervious area
% impervious
Design rainfall depth
Storage Volume: Non -SR Waters
Minimum volume required
Volume provided
Storage Volume: SR Waters
1-yr, 24-hr runoff depth
Pre -development 1-yr, 24-hr runoff
Post -development 1-yr, 24-hr runoff
Minimum volume required
Volume provided
Peak Flow Calculations
1-yr, 24-hr rainfall depth
Rational C, pre -development
Rational C, post -development
Rainfall intensity: 1-yr, 24-hr storm
Pre -development 1-yr, 24-hr peak flow
Post -development 1-yr, 24-hr peak flow
Pre/Post 1-yr, 24-hr peak flow control
Basin Elevations
Basin bottom elevation
Sediment cieanout elevation
Bottom of shelf elevation
Permanent pool elevation
SHWT elevation
Top of shelf elevation
Temporary pool elevation
174,760.00 n'
93,209.00 ft'
53.34 %
1.00 in
7,715.00 n'
11,756.00 n'
in
3.02
in
0.30
(unitless)
0.55
(unitless)
0.13
inthr
0.11
n'/sec
0.33
n'/sec
0.22
a'Isec
157.80 n
158.80 It
165.30 it
165.80 it
162.40 it
166.30 It
166.51 it
Form SW401-Wet Detention Basin-Rev.4 Paris I. a H. Design Summary, Page 1 or 2

Permit No. -s W6 C)T_04 0 Z
(to be provided by DWQ)
III:. DESIGN INFORMATION"
Volume and Surface Area Calculations
SAIDA ratio
(uni8ess)
Surface area at the bottom of shell
13,096.00
e
Volume at the bottom of shelf
48,600.00
ft3
Permanent pool, surface area required
6,117.00
ryz
Permanent pool, surface area provided
16,580.00
ryz
OK
Permanent pool volume
56,025.00
fit
Average depth for SA/DA tables
3.38
it
OK
Surface area at the top of shelf
21,355.00
to
Volume at the lop of shelf
65,340.00
ff'
Forebay volume
11,745.00
fit
Forebay % of permanent pool volume
20.96
%
OK
Temporary pool, surface area provided
20,542.00
it'
Drawdown Calculations
Treatment volume drawdown time
2.70 days
OK
Treatment volume discharge rate
0.10 tt'/s
Pre -development 1-yr, 24-hr discharge
0.11 tt"/s
OK
Post -development 1-yr, 24-hr discharge
0.10 ftl/s
OK
Additional Information
Diameter of orifice
2 in
Design TSS removal
90 %
Basin side slopes
3.00 :1
OK
Vegetated shelf slope
10.00 A
OK
Vegetated shelf width
10.00 tt
OK
Length of 8owpath to width ratio
10.50 :1
OK
Length to width ratio
10.50 :1
OK
Trash rack for overflow & orifice?
y (Y or N)
OK
Freeboard provided
1.00 ft
OK
Vegetated filter provided?
n (Y or N)
Design must be based on 90% TSS removal
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
pump out
Form SW401-Wet Detention Basin-Rev.4 Parts I. It II. Design Summery, Page 2 of 2

Permit Number. 5 �dE� fiE
(to be provided by DWQ)
Drainage Area Number: 1
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
Potentialproblem:
How I will remediate theproblem:
The entire BMP
Trash/debris is present.
Remove the trash/debris.
The perimeter of the wet
detention basin
Areas of bare soil and/or
erosive gullies have formed.
Regrade the soil if necessary to
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.3
Page 1 of 4

001
Permit Number: S11RG G f(t� f UZ
(to be provided by DWQ)
Drainage Area Number: I
BMP element:
Potentialproblem:
How I will remediate theproblem:
The inlet device: pipe or
swale
The pipe is clogged.
Unclog the pipe. Dispose of the
sediment off -site.
The pipe is cracked or
Replace the pipe.
otherwise damaged.
Erosion is occurring in the
Regrade the swale if necessary to
swale.
smooth it over and provide erosion
control devices such as reinforced
turf matting or riprap to avoid
future problems with erosion.
The forebay
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design depth for
possible. Remove the sediment and
sediment storage.
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Erosion has occurred.
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion problems.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than spraying.
The vegetated shelf
Best professional practices
Prune according to best professional
show that pruning is needed
practices
to maintain optimal plant
health.
Plants are dead, diseased or
Determine the source of the
dying.
problem: soils, hydrology, disease,
etc. Remedy the problem and
replace plants. Provide a one-time
fertilizer application to establish the
ground cover if a soil test indicates
it is necessary.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than 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
with pesticide (do not spray).
the basin surface.
Form SW401-Wet Detention Basin O&M-Rev.3 Page 2 of 4

Permit Number: S W e U�Oq 0 2—
(to be provided by DWQ)
Drainage Area Number: >
BMP element:
Potentialproblem:
How I will remediate theproblem:
The embankment
Shrubs have started to grow
Remove shrubs immediately.
on the embankment.
Evidence of muskrat or
Use traps to remove muskrats and
beaver activity is present.
consult a professional to remove
beavers.
A tree has started to grow on
Consult a dam safety specialist to
the embankment.
remove the tree.
An annual inspection by an
Make all needed repairs.
appropriate professional
shows that the embankment
needs repair.
The outlet device
Clogging has occurred.
Clean out the outlet device. Dispose
"
-
of the sediment off -site.
The outlet device is damaged
Repair or replace the outlet device.
The receiving water
Erosion or other signs of
Contact the local NC Division of
damage have occurred at the
Water Quality Regional Office, or
outlet.
the 401 Oversight Unit at 919-733-
1786.
The measuring device used to determine the sediment elevation shall be such
that it will give an accurate depth reading and not readily penetrate into
accumulated sediments.
When the permanent pool depth reads 7.0 feet in the main pond, the sediment
shall be removed.
When the permanent pool depth reads 7.0 feet in the forebay, the sediment
shall be removed.
Sediment Removal
Bottom
BASIN DIAGRAM
(fill in the blanks)
Permanent Pool Elevation 165.80
118.10 Pe amen Pool
Volume Sediment Removal Elevation 158.80 Volume
157.80 ft Min. ---------------------------- ----------- -
Sediment Bottom Elevation 157.80 I-ft n
Storage Sedimer
Storage
FOREBAY MAIN POND
Form SW401-Wet Detention Basin O&M-Rev.3
Page 3 of 4

t ."
Permit Number: S `y 6 a irO qJ Z
(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:West Manchester Industrial Park
BMP drainage area number:I
Print name:Joseph Crossman
Address:307 Coventry Court, Hollidaysbure, PA 16648
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, Bkfkk/ /,IIJi.l J Jt_tL14,1 VA/i a Notary Public for the State of
l'LR' '5X L i1-n�i a County of 011 i 2 do hereby certify that
Z%S tp it l • /LC'5_ti1 R� personally appeared before me this
6�-
day of A-F2t t- �' lO rG , and acknowledge the due execution of the
forgoing wet detention basin maintenance requirements. Witness my hand and official
seal,
■ors ss L
t Morun vuam
M+ Maswsocr.r�20"
SEAL
My commission expires
Form SW401-Wet Detention Basin O&M-Rev.3 Page 4 of 4

West Manchester Industrial Park
Drawdown Time
Temporary storage volume =
Orifice diameter =
Area of orifice =
Orifice Coefficient (Cd) _
Driving head (H) _
Discharge (Q) _
Drawdown time =
11756 cf
2 in
0.0218 sf
0.60
0.23 ft
0.05038506 cfs
233323.126 s
64.8119795 hr
2.70 days
West Manchester drawdown time.xls Printed 5/28/2008