SW7060826_HISTORICAL FILE_20200720

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW 70&6k�Cl
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYM M D D

W1F6
ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
BPJAN WPENN
Director
NORTH CAROLINA
Environment Quarfty
July 20, 2020
City of Washington , I .
Attention: Mr. Jonathan Russell, City Manager
102 E. Second Street
Washington, NC 27889
Subject: Stormwater Permit Renewal
Stormwater Management Permit SW7060826
Fire — Rescue — EMS Station
Beaufort County
Dear Mr. Russell:
A Division of Energy, Mineral, and Land Resources file review has determined that
Stormwater Permit SW7060826 for a stormwater treatment system consisting of a sand
filter and a pocket wetland system serving the Fire — Rescue — EMS Station located on
15 th Street Extension in Washington, NC expires on January 17, 2021. This is a
reminder that permit renewal applications are due 180 days prior to expiration. We do
not have a record of receiving a renewal application. .
Please submit a completed permit renewal application along with a $505.00 fee for
permit renewal. Also, -it was noted in the file review that a designer's certification that the
project was constructed in accordance with the approved plans as required by the
permit has not been submitted. Please include this with your application. Permit
application forms for renewal can be found on our website at: __-Trt-
r it s/stormwater-prQgtaMIpost Onstruction. North Carolina General Statutes and the
Coastal Stormwater rules require that this property be covered under a stormwater
permit. Failure to maintain a permit subjects the owner to as of civil penalties.
If you have questions, please feel free to contact me at [phone]. 1 will be glad to
discuss this by phone or meet with you. If you would like, I can e-mail you a copy of the
application form. You can request a copy by e-mailing me at rooer thorpe aC�ncdenr,aov.
Sincerely,
oger K. Thorpe
Environmental Engineer
® .-EV'
North Carolina Department of Environmental Quality I Division of Energy. Mineral and Land Resources
Washington Regional Office 1943 Washington Square Mall I Washington, North Carolina 27869
M.946.6481

1pia7� 0
F WArF90 Michael F. Easley, Governor
�0 (r William G. Ross Jr., Secretary
rNorth Carolina Department of Environment and Natural Resources
plan W. Klimek, P.E. Director
Division of Water Quality
DIVISION OF WATER QUALITY
January 17, 2007
City of Washington
Attn: James C. Smith
410 North Market Street
Washington, NC 27889
Subject:
Dear Mr. Smith:
Stormwater Permit No. SW7060826
Fire -Rescue -EMS Station
High Density Stormwater Project
Beaufort County
The Washington Regional Office received your request for permit renewal on August 31,
2006. Additional information, along with a revised site plan, was received on December 19, 2006.
After reviewing our files and the additional information provided, it has been determined that the
project will comply with the Stormwater Regulations set forth in Title 15A NCAC 2H.1000. We are
forwarding. Permit No. SW7060826 dated January 17, 2007 to City of Washington for the
operation of a sand filter system and a pocket wetland system to serve the Fire -Rescue -EMS
Station located along the 15 Street Extension in Washington, North Carolina.
This permit shall be effective from the date of issuance until January 17, 2017 and shall be
subject to the conditions and limitations as specified therein. Please pay special attention to the
Operation and Maintenance requirements in this permit. Failure to establish an adequate system
for operation and maintenance of the stormwater management system will result in future
compliance problems.
If any parts, requirements, or limitations contained in this permit are unacceptable, you
have the right to request an adjudicatory hearing upon written request within thirty (30) 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.
North Carolina Division of Water Quality Internet: ore
943 Washington Square Mall Phone [phone]
Washington, NC 27889 Fax [phone] -
One
NorthCarolina
Natmally
An Equal Opportunity/Affirmative Action Employer- 50% Recycled/l 0% Post Consumer Paper

City of Washington
Janaury 17, 2007
Page Two
If you have any questions, or need additional information concerning this matter,
please contact Samir Dumpor at [phone].
Sincerely,
h- Al Hodge, Regional Supervisor
Surface Water Protection Section
Washington Regional Office
cc: Paul A. Smith, PE, Stewart Engineering, Inc.(200 S. College Street, Suite 720,
Charlotte, NC 28202)
City of Washington Planning/Inspections
ashington Regional Office
Central Files

State Stormwater Management Systems
Permit No. SW706082B
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
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
City of Washington
Beaufort County
FOR THE
operation and maintenance of stormwater management systems in compliance with the
provisions of 15A NCAC 2H.1000 (hereafter referred to as the "stormwaterrules') 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 for a sand filter system and a pocket wetland system to serve the Fire -
Rescue -EMS Station located along the 15`h Street Extension in Washington, North
Carolina.
This permit shall be effective from the date of issuance until January 17, 2017 and shall
be subject to the following specified conditions and limitations:
I. DESIGN STANDARDS
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 on page 4 of this permit, the Project Data Sheet.
3. Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of the permit.
3

DIVISION OF WATER QUALITY
SAND FILTER - PROJECT DATA
Project Name:
Permit Number:
Location:
Applicant:
Mailing Address:
Receiving Stream:
Stream Classification:
Total Site Area:
Total Impervious:
Area Allowed
Filter Depth:
Required surface area
for sediment & filter chambers
Provided surface area:
Required Storage:
Provided Storage:
Controlling Orifice:
By pass overflow:
Fire -Rescue -EMS Station
SW7060826
City of Washington, Beaufort County
City of Washington
410 North Market Street
Washington, NC 27889
Cherry Run
C, Sw, NSW
2.24 acres
1.0 acres
18 - inches to weir height
482 sf each chamber
1082 sf sediment chamber
841 sf sand filter chamber
725 cf each chamber
1,116 cf, sediment chamber
864 cf, sand filter chamber
6" at elevation 7.0 ft.
set at elevation 8.5 ft.
4

DIVISION OF WATER QUALITY
POCKET WETLAND - PROJECT DATA
Project Name:
Permit Number:
Location:
Applicant:.
Mailing Address:
Receiving Stream:
Stream Classification:
Total Site Area:
Tota1.lmpervious:
Area Allowed
Basin Depths:
Required Storage Volume:
Provided Storage Volume:
Surface Area Required:
Surface Area Provided:
Temporary Storage:
Controlling Orifice:
Fire -Rescue -EMS Station
SW7060826
City of Washington, Beaufort County
City of Washington
410 North Market Street
Washington, NC 27889
Cherry Run
C, Sw, NSW
2.24 acres
1.0 acres
2.0 ft
3,528 cf
1,052 cf (sediment chamber)
480 sf
4,934 sf
1.75 MSL elevation
1.25 - inch orifice
5

4. No homeowner/lot owner/developer shall be allowed to fill in, alter, or pipe any
vegetative practices (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.
5. The following items will require a modification to the permit:
a. Any revision to the approved plans, regardless of size
b. Project name change
C. Transfer of ownership
d. Redesign or addition to the approved amount of built -upon area
e. Further subdivision of the project area.
In addition, the Director may determine that other revisions to the project should
require a modification to the permit.
6. 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.
II. SCHEDULE OF COMPLIANCE
1. The permittee will comply with the following schedule for construction and
maintenance of the stormwater management system.
a. 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 surfaces except roads.
b. During construction, erosion shall be kept to a minimum and any eroded
areas of the system will be repaired immediately.
2. The facilities must be properly maintained and operated at all times. The
approved Operation and Maintenance Plan must be followed in its entirety and
maintenance must occur at the scheduled intervals.
3. The permittee shall at all times provide the operation and maintenance necessary
to assure the permitted stormwater system functions at optimum efficiency
including, but not limited to:
A

9
a. Semiannual scheduled inspections (every 6 months)
b. Sediment removal
C. Mowing and revegetation 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 outlet structure, orifice device and catch
basins and piping.
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.
5. 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.
6. Upon completion of construction 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. Mail the Certification to the Washington Regional Office, 943
Washington Square Mall, Washington, North Carolina, 27889, attention Division of
Water Quality.
7. A copy of the approved plans and- specifications shall be maintained on file by the
Permittee for a minimum of five years from the date of the completion of
construction.
III. GENERAL CONDITIONS
1. This permit is not transferable. In the event there is a desire for the facilities to
change ownership, or there is a name change of the Permittee, a formal permit
request must be submitted to the Division of Water Quality accompanied by an
application fee, documentation from the parties involved, and other supporting
materials as may be appropriate. The approval of this request will be considered
on its merits and may or may not be approved.
2. 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 143-215.6(a) to 143-215.6(c).
3. 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.
7

4. 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.
5. The permit may be modified, revoked and reissued or terminated for cause. The
filing of a request for a permit modification, revocation and reissuance or
termination does not stay any permit condition.
6. At least six months prior to the expiration date, the permittee must submit
a written request to the Division of Water Quality, Washington Regional Office, for
permit renewal.
Permit issued this the 17 th day of January, 2007.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
I"
Alan W. Klimek, P.E. Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW7060826
G

Stormwater Permit No. SW7060826
City of Washington
Designer's Certification
I, , as a duly
Registered Professional Engineer in the State of North Carolina, having been authorized to observe
( periodical ly/weekly/fulltime)
the construction of the 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.
Signature
Registration Number
Date
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.
9

Plans on top of
filing cabinet.

DWQ Project No. S W 70 G O$ 2 (;A
DIVISION OF WATER QUALITY - 401 EXTENDED DETENTION (and POCKET') WETLAND WORKSHEET
I. PROJECT INFORMATION (please complete the following information):
Project Name: FtRc= ReScve �MS S �T+�^� ISTr' SrartT wgSH
Contact Person: PAS Scorn+ PhcneNumber: (7e4) 334-7?
For projects with multiple basins, specify which basin this worksheet applies to:
Permanent Pool Elevation Co • 50 ft. (elevation of the orifice invert out)
Temporary Pool Elevation S- ? ft. (elevation of the outlet structure invert in)
Permanent Pool Surface Area
Drainage Area
Impervious Area
Forebay Surface Area
p, C, Marsh 0'-9' Surface Area 501
6-12„Marsh 9'-19' Surface Area 402
718 Micro Pool Surface Area I O'g
Temporary Pool Volume
SAIDA used
Diameter of Ori
II. REQUIRED ITEMS CHECKLIST
2150
sq. ft.
1,4(o$
ac.
C 497
5=4
ac.
sq. ft.
+ 2 o
sq. ft.
9G0
sq. ft.
244
sq. ft.
17.5-si cu. ft.
ro 4 rJ
(water surface area at permanent pool elevation)
(on -site and off -site drainage to the basin)
(on -site and off -site drainage to the basin)
(at permanent pool elevation approximately 15%)'
(at permanent pool elevation approximately 350/6)'
(at permanent pool elevation approximately 35%)'
(at permanent pool elevation approximately 150/6p
(volume detained on lop of the permanent pool)
RE6t 0.75,
¢,6� surface area to drainage area rafio)'
t.25 in. (draw down orifice diameter)
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a
requirement has not been met, allach an explanation of why. At a minimum, a complete stomnvater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for
additional information and will substantially delay final review and approval of the project
A The temporary pool controls runoff from the 1 inch rain.
PA The basin side slopes are no steeper than 3:1.
AAA planting plan for the marsh areas with plant species and densities is provided.
A ) Vegetation above the permanent pool elevation is specified.
91,15 An emergency drain is provided to drain the basin. ricrc od Pam+ )s
p�The temporary pool draws down in 2 to 5 days.
�—Sediment storage is provided in the permanent pool.
sediment disposal area is provided. 0 oit ov PLAw-'
P A.3 Access Is provided for maintenance.
A site specific, signed and notarized operation and maintenance agreement is provided.
P The drainage area (including any offste area) is delineated on a site plan.
F3—Access is provided for maintenance.
PAY Plan details for the wetland are provided.
FS Plan details for the inlet and outlet are provided.
P A A site speck operation and maintenance agreement, signed and notarized by the responsible party is provided (see
httpd/h2o.ehnr.state.nc.us/ncwellandsloandm.doc).
Pocket Wetlands have different design parameters and are only assumed to remove 35% TSS - See pp.19 and 20 of the NC DENR
Stormwaler BMP Manual, April 1999.10% open water, 509/6 high marsh, 40%low marsh.

WET [WETLAND] DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT
[Wetland maintenance wording is bracketed. Please modify the document as appropriate.]
The wet [wetland] detention basin system is defined as the wet [wetland] detention basin, pretreatment
including forebays and the vegetated filter if one is provided.
Maintenance activities shall be performed as follows:
After every significant runoff producing rainfall event and at least monthly:
a. Inspect the wet [wetland] detention basin system for sediment accumulation, erosion, trash
accumulation, vegetated cover, and general condition.
b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs within
2 to 5 days as designed.
2. Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow
vegetative cover to maintain a maximum height of six inches, and remove trash as needed.
3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to
maintain proper functioning.
4. Remove accumulated sediment from the wet [wetland] detention basin system semi-annually or when
depth is reduced to 75% of the original design,depth (see diagram below). Removed sediment shall be
disposed of in an appropriate manner and shall be handled in a manner that will not adversely impact
water quality (i.e. stockpiling near a wet [wetland] detention basin or stream, etc.).
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 5 feet in the main pond, the sediment shall be removed.
[For stormwater wetlands: If the elevation of the marsh areas exceed the permanent pool elevation, the
sediment should be removed to design levels. This shall be performed by removing the upper 6 inches of
soil and stockpiling it. Then the marsh area shall be excavated six inches below design elevations.
Afterwards the stockpiled soil should be spread over the marsh surface. The soil should not be stockpiled
for more than two weeks.]
/
When the permanent pool depth reads 5-0feet in the forebay [and micro -pool], the sediment shall
be removed.
BASIN DIAGRAM
(fill in the blanks)
Permanent Pool Elevation
i
Sediment moval El. 5.0 75% /
-------------- -- Sediment Removal Elevation 5.0 BottomE vation 4.5 5%-------------------------------------------- 175%
Bottom Elevation 4.5 0
FOREBAY MAIN POND
Page 1 of 2

5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These
plants shall be encouraged to grow along the vegetated shelf and forebay berm.
[For wetlands: Wetland planting densities in the marsh areas should be maintained by replanting bare
areas as needed. Wetland plants should be encouraged to grow in the marsh areas.]
6. If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment
through the emergency drain shall be minimized to the maximum extent practical.
7. All components of the wet [wetland] detention basin system shall be maintained in good working order.
8. Level spreaders or other structures that provide diffuse flow shall be maintained every six months. All
accumulated sediment and debris shall be removed from the structure, and a level elevation shall be
maintained across the entire flow spreading structure. Any down gradient erosion must be repaired and/or
replanted as necessary.
1 acknowledge and agree by my signature below that I am responsible for the performance of the seven
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. L�
Print name: ,� e -mil' 7"
Titlp• ('1T7 �%%/%Y1 � ✓
Address:
Signatu
Note: The legally responsible parry 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. / 1
1 ZO �L a, --�o hnsc n a Notary Public for the State of o �a-
County of �a,�o- i do hereby certify that _) A rvt ub C , -
yh
personally appeared before me this ! 9 day of A01P , and acknowledge the due
execution of the forgoing wet [wetland] detention basin maintenance requirements. Witness my hand and
official seal,
SEAL /,
My commission expires ZALI-1 ao�9
Page 2 of 2

1
LETTER OF TRANSMITTAL
�ykJkl�
FSTEWART
TO
FROM
Samir Dumpor, P.E.
Paul A. Smith P.E.
Water Quality Section
Civil Project Manager
943 Washington Square Mall
704.334.7925 x316
Washington, NC 27889
DATE SENT VIA
12-18-06 Overnight
PROJECT NUMBER PROJECT NAME
X5015 Washington NC Station
COPIES DATE DESCRIPTION
1
12-18-06
Wooten Group Comment Responses
2
12-18-06
Stormwater management Plan
2
12-18-06
Sets of Plan
For approval
®
For review & comment
Returned for corrections
For your use
Approved as submitted
Returned after review
As requested
0
Approved as noted
Resubmit copies for approval
Samir,
Please find the attached plans and storm water managementreports for your continued review.
We have incorporated all of the Wooten and DWQ's comments.
Please refer to section 4 in the SWMP for all the applications and pertinent forms.
I've send the revised supplements to the chief to get the appropriate'signaturesF- Thanks for
your continued assistance. w���� V �`_'
SIGNE \ I
Paul A. Smith P.E.
DEC 19 2006
DWQ-WARO
COPIED TO
File
ENGINEERING. INNOVATION, SOLUTIONS:' 200SCOLLEGE sr CHARLOTTE. NC T704.334.7925
SUITE 720 28202 , 704,384.7926

Stormwater Review- Washington Fire Rescue EMS Station
^` Subject: Stormwater Review- Washington Fire Rescue EMS Station
From: "Paul Smith" <[e-mail]>
Date: Tue, 5 Dec 2006 08:26:45 -0500
To: <[e-mail]>
Samir,
Please review the attached comments from the City storm water reviewer (below). He found a
very costly mistake in my BMP removal sheet where I had the incorrect removal rate for the Wet
pond. I've attached the revised sheet for discussion, showing where we actually are now. I'd like
to discuss making the wet pond a wetlands instead.
Additionally please see his other comments which ask for DWQ input. One on the buffer and one
on the forebay. Please call at your earliest convenience to discuss.
Thanks again for your assistance.
Paul Smith
Civil Project Manager
STE W A RT
200 S. College Street
Suite 720
Charlotte, NC 28202
T 704.334.7925 x316
F 704.334.7926
Engineering. Innovation. Solutions.
From: Jimmy Davis (mailto:[e-mail])
Sent: Monday, December 04, 2006 1:11 PM
To: Paul Smith; Fieler, Phil
Subject: FW: Stormwater Review- Washington Fire Rescue EMS Station
Paul,
See below the comments from the firm that reviewed the storm water information submitted to the City. please
call me when you receive the email so that we can discuss it.
Jimmy Davis
Chief of Department
City of Washington Fire -Rescue -EMS
P. O. Box 1988
Washington, NC 27889
252-948-9400 (Office)
252-975-6048(Fax)
[e-mail] (email)
From: Allen Lewis
Sent: Monday, December 04, 2006 11:02 AM
To: Jimmy Davis
Subject: FW: Stormwater Review- Washington Fire Rescue EMS Station
I of 3 12/5/2006 10:17 AM

f

Stormwater Review- Washington Fire Rescue EMS Station
,y Per your request.
Allen Lewis
Public Works Director
City of Washington
252.975.9302
[e-mail]
washingtonnc.ws
-----Original Message -----
From: Adam Waters
Sent: Monday, December 04, 2006 8:15 AM
To: Allen Lewis
Cc: Jeffery Everett
Subject: FW: Stormwater Review- Washington Fire Rescue EMS Station
Below are the comments from the Wooten Company concerning the Washington Fire Rescue EMS Station. Marty
Stone indicates several significant issues with this packet. I have not spoken with Chief Davis yet. I wanted to find
out from if you wanted me to talk with him or if you wanted discuss it with him since this involves another City
department. Let me know, I know Jimmie is in a hurry to resolve this.
Adam Waters
Water Resources Superintendent
City of Washington
[e-mail]
washingtomic.ws
-----Original Message -----
From: Marty Stone[mailto:[e-mail]]
Sent: Friday, December 01, 2006 5:13 PM
To: Adam Waters
Cc: [e-mail]
Subject: Stormwater Review- Washington Fire Rescue EMS Station
Mr. Waters,
Per your request, we have evaluated the stormwater management plan as submitted by Stewart Engineering, INC.
for the City of Washington Fire Rescue EMS Station in terms of compliance with the City of Washington's
Tar -Pamlico Stormwater requirements only. This review does not address the effectiveness of the handling of
runoff volume or peak flow on the site or adjacent property for rain events exceeding the 1-year, 24-hour storm and
it does not consider the effectiveness of the plan as it relates to the State's stormwater requirements. Our review
generated the following comments which need to be addressed.
1) The entire 2.24 acres do not drain into the catchment 1 area as indicated in section 3 on the BMP Removal
Calculation Worksheet. If an area does not drain into the BMP's proposed, the nutrient reduction credit cannot
be applied to that area. A map needs to be included showing the exact acreage draining into catchment 1,
catchment 2, etc. It appears there are some areas that drain away from the BMP's and those areas need to be
accounted for in the worksheet in a catchment that is receiving no nutrient removal.
2) On the BMP Removal Calculation Worksheet in Section 3 of the calculations, the second BMP shows the
removal rates for a stormwater wetland as opposed a wet detention pond as designed on the plans. Also on
the worksheet, there is a third BMP listed to remove phosphorus but there is no third BMP shown on the plans
or explained in Section C of the City's permit application.
3) The drainage acreage used to size the wet detention pond per the BMP Manual does not match the drainage
area going to the pond in the nutrient removal worksheet. All acreages on plans, worksheets, calculations, etc.
should match.
2 of 3 12/5/2006 10:17 AM

Stormwater Review- Washington Fire Rescue EMS Station
4) The soils map provided does not show streams. Provide a soils map that shows streams so buffers can be
verified.
5) Provide a USGS map in color or highlight "blue lines" so buffers can be verified.
6) Provide letter from NCDENR DWQ authorizing the elimination of the forebay for the wet pond due to upstream
sand filter. Otherwise, provide forebay in wet detention pond as required in BMP design manual in order to
receive credits for nutrient removal.
7) Per NCAC T15A: 02B 0.0259 (5)(a), the outlet pipe for the wet detention pond cannot discharge within the
buffer. Runoff from the outlet pipe must be converted to diffuse flow before the runoff enters Zone 2 of the
riparian buffer.
8) To receive the nutrient removal credits for the, sand filter as listed on the BMP Removal Calculation Worksheet,
the surface area of the sand filter and sediment chamber must each be a minimum of 360 square feet per acre
as required by the BMP manual.
9) Using the "90% TSS Removal with No Vegetated Filter Required" table, a 63% impervious given in the
stormwater application and an average depth of 3.5 feet, the surface area to drainage area (SA/DA) used to
size the pond appears to be wrong. The wet detention pond must be designed per the BMP manual to receive
nutrient removal credits.
Based on our findings as outlined above, we do NOT recommend that the City of Washington approve the
stormwater plan in terms of satisfying the City's Tar -Pamlico Stormwater regulations until the above comments are
addressed. When the comments are addressed, we will be happy to re-evaluate the stormwater plan if the City so
desires. If you have any questions, or comments, please do not hesitate to call.
Sincerely,
THE WOOTEN COMPANY
Marty
Marty D. Stone, P.E.
L'i , 0 isorFial nce The Wooten Company
ro 120 N: Boylan Ave.
V Raleigh, N.C. 27603
tvo6TEri6WKNYY 919.828.0531
t 919.834.3589 fax
mstonet7a thewootencompanv.com
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www.stewarLeng.com
S.
STEWART
December 18, 2006
Adam Waters
Water Resources Superintendant
City of Washington
410 North Market Street
Washington NC, 27889
Re: 15t6 Street New Fire and Rescue -Storm water Review Comments.
Mr. Waters,
Stewart Engineering has review and revised the project per the comments listed
below. We've listed the review comments and then our responses below in bold print.
Feel free to contact me with any questions or comments.
1) The entire 2.24 acres do not drain into the catchment 1 area as indicated in
section 3 on the BMP Removal Calculation Worksheet. If an area does not
drain into the BMP's proposed, the nutrient reduction credit cannot be applied
to that area. A map needs to be included showing the exact acreage draining
into catchment 1, catchment 2, etc. It appears there are some areas that drain
away from the BMP's and those areas need to be accounted for in the
worksheet in a catchment that is receiving no nutrient removal.
Designer Response: We have revised the BMP removal worksheet to break
the parcel into two catchments. Please see the attached detailed drainage
area map as well as the revised worksheet.
2) On the BMP Removal Calculation Worksheet in Section 3 of the calculations,
the second BMP shows the removal rates for a stormwater wetland as
opposed a wet detention pond as designed on the plans. Also on the
worksheet, there is a third BMP listed to remove phosphorus but there is no
third BMP shown on the plans or explained in Section C of the City's permit
application.
Designer Response: We have revised the BMP removal worksheet
accordingly. We did need to change the designed wetpond to a pocket
wetland pond in order to meet the Tar -Pamlico rule.
3) The drainage acreage used to size the wet detention pond per the BMP
Manual does not match the drainage area going to the pond in the nutrient
removal worksheet. All acreages on plans, worksheets, calculations, etc.
should match.
Designer Response: We have revised all components of the SWMP report to
ensure everything matches.
4) The soils map provided does not show streams. Provide a soils map that
shows streams so buffers can be verified.
Designer Response: We have included a more detailed soils report that
shows the streams. We based the buffer offsets from the top of the bank
based on the site surveyed contours.
ENGINEERING. INNOVATION, SOLUTIONS" 2005 COLLEGE ST CHARLOTTE, NC r704334.7925
SUITE. 720 28202 s 704,334 7926

S.
STEWART
5) Provide a USGS map in color or highlight 'blue lines" so buffers can be
verified.
Designer Response: We have provided a color USGS map in the SWMP
report.
6) Provide letter from NCDENR DWQ authorizing the elimination of the forebay
for the wet pond due to upstream sand filter. Otherwise, provide forebay in
wet detention pond as required in BMP design manual in order to receive
credits for nutrient removal.
Designer Response: With the design of the pocket wetlands, we have
included a fore bay. The pocket wetland pond is also oversized in order to
meet the storage requirements for detention.
7) Per NCAC T15A: 02B 0.0259 (5)(a), the outlet pipe for the wet detention pond
cannot discharge within the buffer. Runoff from the outlet pipe must be
converted to diffuse flow before the runoff enters Zone 2 of the riparian buffer.
Designer Response: DWQ has issued a letter dated 12/8/06 (attached) that
cites per 15A NCAC 02B. 0259(6) that storm water outfalls are exempted as
long as we meet the 4lb/acre/yr for the TN and 0.4 Ib/ac/yr for the TP. The
design meets now meets those requirements.
8) To receive the nutrient removal credits for the sand filter as listed on the BMP
Removal Calculation Worksheet, the surface area of the sand filter and
sediment chamber must each be a minimum of 360 square feet per acre as
required by the BMP manual.
Designer Response: The sand filter as designed met this requirement, we
revised our calculations to show the actual sizes.
9) Using the "90% TSS Removal with No Vegetated Filter Required" table, a 63%
impervious given in the stormwater application and an average depth of 3.5
feet, the surface area to drainage area (SA/DA) used to size the pond appears
to be wrong. The wet detention pond must be designed per the BMP manual
to receive nutrient removal credits.
Designer Response: The design change from the wet pond to the pocket
wetland eliminates this comment. The sand filter by itself has an 85% TSS
removal and then the pocket wetland adds another 35% TSS. The pocket
wetland has been designed per the BMP manual.
,Please feel free to give me a call with any questions.
Tha s
l��
aul A. Smith
704.334.7925 ext 316
2of2

�DF WATE90 Michael F. Easley, Governor
�0 0 William G. Ross Jr., Secretary
rNorth Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E. Director
Division of Water Quality
December 8, 2006
City of Washingtg
Attn: James C. Smith
410 North Market Street
ashington, NC 27889
Subject: Stormwater Review SW7060826
Fire — Rescue — EMS Station
Beaufort County
Dear Mr. Smith:
This office received a Coastal Stormwater permit application and plans for the subject project on
August 31, 2006 and revised plans on November 21, 2006. Based on findings of The Wooten Company's
stormwater review and the recommendation to the City of Washington not to approve said plans, The
Division of Water Quality, Washington Regional Office has following comments:
I. Since changes to the plans will be significant, please submit complete new package (without fee)
within 30 calendar days. Otherwise, the whole project package will be returned.
2. Please revise the plans to reflect comments of The Wooten Company's reviewer.
3. Per 15A NCAC 02B. 0259(6), the stormwater outfalls are exempted from diffuse flow
requirement, provided that they are managed to minimize the sediment, nutrients and other
pollution that convey to waterbodies, hence straight -piping might be allowable only if Nutrient
Removal Requirements of 4lb/acre/yr for TN and 0.4 Ib/acre/yr for TP are met.
4. Please provide -two copies of signed and sealed revised sheets and calculations.
The above requested information must be received in this office prior to January 8, 2006 or your
application will be returned as incomplete. The return of this project will necessitate resubmittal of all
required items including the application fee. If you need additional time to submit the required
information, please mail or fax your request for time extension to this office at the Letterhead
address.
You should also be aware that the Stormwater Rules require that the permit be issued prior to any
development activity. Construction without a permit is a violation of 15A NCAC 2H.1000 and North
Carolina General Statute 143-215.1 and may result in civil penalties of up to $10,000'per day.
North Carolina Division of Water Quality Washington Regional Office Phone [phone] FAX [phone]
Internet: h2o.enr.state.nc.us 943 Washington Square Mall, Washington, NC 27889
An Equal OpponunitylAKrmative Action Employer - 50% Recycled110 % Post Consumer Paper
Customer Service
1-977-623-6748
N o hCarolma
A,l wurallil

Please reference the Stormwater Project Number above on all correspondence. If you have
questions, please feel free to contact me at [phone].
Sincerely,
Samir Dumper, PE
Environmental Engineer
Washington Regional Office
cc: Paul A. Smith, PE, Stewart Engineering, Inc.(200 S. College Street, Suite 720. Charlotte, NC 28202)
—Washington Regional Office
Marty D. Stone, PE, The Wooten Company, 120 N. Boylan Ave., Raleigh, NC 27603

1
r-
City of Washington
Attn: James C. Smith
410 North Market Street
Washington, NC 27889
Dear Mr. Smith:
Michael h. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E. Director
Division of Water Quality
November 30, 2006
Subject: Stormwater Review SW7060826
Fire — Rescue — EMS Station
Beaufort County
This office received a Coastal Stormwater permit application and plans for the subject project on
August 31, 2006 and revised plans on November 21, 2006. A preliminary review of the project indicates
that before a State Stormwater permit can be issued the following additional information is needed.
I. Please update sheet 2 of the Stormwater Management Permit Application to change the two rain
gardens in series to sand filter.
2. Please update sheet 1 of the Wet Detention Basin Supplement to change the SA/DA ratio from
5.7 (for the depth of 4 feet) to new value for the depth of 3.5 feet.
3. Please revise the Sand Filter design as follows:
• Remove the pipe between the Sediment Chamber and the Sand Filter Chamber;
• Widen the Spillway on Sand Filter to full length of the Chamber
4. Please revise the Wet Pond design as follows:
• Reverse the location of the Emergency Spillway and the Outlet Structure;
• Lay out the outlet pipe at approximately 45 degrees in direction of the flow.
5. Please provide two copies of signed and sealed revised sheets and calculations.
The above requested information must be received in this office prior to December 30, 2006 or
your application will be returned as incomplete. The return of this project will necessitate resubmittal of
all required items including the application fee. If you need additional time to submit the required
information, please mail or fax your request for time extension to this office at the Letterhead
address.
You should also be aware that the Stormwater Rules require that the permit be issued prior to any
development activity. Construction without a permit is a violation of 15A NCAC 2H.1000 and North
Carolina General Statute 143-215.1 and may result in civil penalties of up to $10,000 per day.
North Carolina Division of Water Quality Washington Regional Office Phone [phone] FAX [phone] Customer Service
Internet: h2o.encstate.nc.us 943 Washington Square Mall, Washington, NC 27889 1-877-623-6748
An Equal Opportunity/Affimlative Action Employer— 50% Recycled/10 % Post Consumer Paper No
hCarolina
J�atura//y

Please reference the Stormwater Project Number above on all correspondence. If you have
questions, please feel free to contact me at [phone].
Sincerely,
�r
Samir Dumpor, PE
Environmental Engineer
Washington Regional Office
cc: Paul A. Smith, PE, Stewart Engineering, Inc.(200 S. College Street, Suite 720, Charlotte, NC 28202)
®Washington Regional Office

A
1a'
City of Washington
Attn: James C. Smith
410 North Market Street
Washington, NC 27889
Dear Mr. Smith:
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E. Director
Division of Water Quality
November 9, 2006
Subject: Stormwater Review SW7060826
Fire - Rescue — EMS Station
Beaufort County
This office received a Coastal Stormwater permit application and plans for the subject project on
August 31, 2006 and revised plans on October 20, 2006. A preliminary review of the project indicates
that before a State Stormwater permit can be issued the following additional information is needed.
1. Please provide new Stormwater Management Permit Application form to reflect revised (October
20, 2006) submittal.
2. Please delineate Wetlands on plans or add a note that none exist.
Please be advised that the stream along the Northeastern property line has been identified as
Intermittent stream and- as such is subject to Tar -Pam Riparian Buffer rules (15A NCAC
02B.0259). The Buffer rules requires protection of existing vegetation in the first 50 feet of
riparian area within this basin. Outlet pipe for the offsite drainage should end at least 50 feet away
from the top of bank of the stream and sheet flow utilized through buffer. No impervious area can
be places within buffer (riprap apron). Wet detention forebay and wet pond appears to be partially
located inside 50-foot buffer. Please redesign in such manner that no grading work will be
utilized within buffer. In addition, this will help to move outlet structure pipe outside of buffer.
4. It appears that the existing RCP drains in southerly direction. If determined otherwise please
provide offsite drainage area including any roadway area and flow spreader sufficient enough for
non -erosive sheet flow through the buffer. Please revise all plans and calculations pertaining to
this change.
5. Please clarify the following:
• Spillway elevation (Plans shows 8.5 — detail shows 8.25);
• Weir at outlet structure (Calcs shows weir elevation at 8.25 — outlet structure detail
don't show weir);
• Orifice diameter (1.5" in Wet Detention Supplement - 1.25" on plans);
6. Please revise the wet detention supplement to show correct basin bottom elevation. SA/DA
calculation used depth of 4 feet but supplement states 3.5 feet (show contours to the bottom of the
Basin). Please Clarify the volumes of Permanent Pool and Temporary Pool
North Carolina Division of Water Quality Washington Regional Office Phone [phone] FAX [phone] Customer Service
Internet h2o.em.state.mus 943 Washington Square Mall, Washington, NC 27889 1-877-623-6748
An Equal Opportunity/Affirmative Acton Employer — 50% Recycled/10% Post Consumer Paper No `hCarolina
Jl Wima!!y

7. Please address item m) on Wet Detention Supplement Checklist.
8. Please revise Wet Detention Pond to minimize dead storage areas and short circuiting.
9. Please revise the Forebay Volume to 20% of total (forebay + wet pond) permanent pool volume
(Wet Detention supplement).
10. Please provide two copies of signed and sealed revised sheets and calculations.
The above requested information must be received in this office prior to December 9, 2006 or
your application will be returned as incomplete. The return of this project will necessitate resubmittal of
all required items including the application fee. If you need additional time to submit the required
information, please mail or fax your request for time extension to this office at the Letterhead
address.
You should also be aware that the Stormwater Rules require that the permit be issued prior to any
development activity. Construction without a permit is a violation of 15A NCAC 21-1.1000 and North
Carolina General Statute 143-215.1 and may result in civil penalties of up to $10,000 per day.
'Please reference the Stormwater Project Number above on all correspondence. If you have
questions, please feel free to contact me at [phone].
Sincerely,
Samir Dumpor, PE
Environmental Engineer
Washington Regional Office
cc: Paul A. Smith, PE, Stewart Engineering, Inc,(200 S. College Street, Suite 720, Charlotte, NC 28202)
Washington Regional Office

LETTER OF TRANSMITTAL
i
19
RIXFHVED
(�
JC i%�,p0�/2000066
FROM Dw /� I-YI APf)
Pat McClain
Paul A. Smith P.E.
Land Quality
943 Washington Square Mall
704.334.7925 x316�--
Washington, NC 27889
DATE SENT VIA
J 10-17-06 Overnight
LAND QUALITY btt, uv
PROJECT NUMBER PROJECT NAME WASVi NGTON REGI
X5015 City of Washington Fire Station
COPIES DATE DESCRIPTION
1
8-29-06
Land Quality Additional Information Package
2
8-29-06
1
Stormwater management Plan
4
8-29-06
Sets of Plans 2 for each department
For approval Z
For review & comment
Returned for corrections
For your use
Approved as submitted
Returned after review
As requested
Approved as noted
Resubmit copies for approval
COMMENTS
Pat,
Enclosed are the Land and Water Quality submittals with the fees and appropriate
forms.
Land Quality Reviewer - Gary Novak (2) sets of plans, 1 SWMP, & Land Quality
Package.
Water Quality Review (SW7060826) - Bill Moore (2) sets of plans, 1 SWMP. This
submittal replaces the previous one. Bill all the information we discussed is in the
SWMP plan including wet pond supplement signed by owner.
Please call me with any questions. Thanks for you continued assistance.
SIGN ED�� COPIED TO
File
Paul A. Smith P.E.
ENGINEERING. INNOVATION. SOLUTIONS- 2006 COLL E0G 5T CHARLOT T6, NC •704.334.7925
SUITE 720 38202 r 704.334,7926

Swlid (068C�4
�✓Jm: lam_/Y�U4�C.. �-L�S
jolaojo6
STORMWATER MANAGEMENT PLAN
For
FIRE — RESCUE — EMS STATION
CITY OF WASHINGTON
15TH STREET EXTENSION
WASHINGTON, NORTH CAROLINA
October 16th, 2006
Prepared for:
Stewart Cooper Newell Architects
719 East Second Avenue
Gastonia, NC 28054
704-865-6311
Prepared by:
STEWART ENGINEERING, INC.
200 South College Street, Suite 720
Charlotte, NC 28202
704-334-7925
,\\uIIII/I/
CAS
I-A� 03159292
%..o �vGINE,�Q
AIiIs��\\\
RECENED
OCT 2 0 2006
®WQ-WARO
LAND QUALITY SECTION
WASHINGTON.IONAL OFFICE

STORMWATER MANAGEMENT PLAN
For
GE0 0 4 2006
FIRE — RESCUE — EMS STATION ®p� V"V t�_� /��n�
.CITY OF WASHINGTON t7 R
15TH STREET EXTENSION
WASHINGTON, NORTH CAROLINA
Original: October 16th, 2006
Revised: November 20, 2006
Revised DWQ Supplements: November 30, 2006
Prepared for:
Stewart Cooper Newell Architects
719 East Second Avenue
Gastonia, NC 28054
704-865-6311
STEWART ENGINEERING, INC.
200 South College Street, Suite 720
Charlotte, NC 28202
704-334-7925
:5t'C r' -Oto
1592 uli

Permit No.
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
SAND FILTER SUPPLEMENT
This form may be photocopied for use as an original.
DWQ Stormwater Management Plan Review:
A complete stormwater management plan submittal includes a Sand Filter supplement for each proposed sand filter,
design calculations, plans and specifications showing all sand filter details, and a fully executed operation and
maintenance agreement.
L PROJECT INFORMATION (Please complete the following information):
Project Name:
WNSIkWr-Tu' ) FaRt=
Res(-JI C-MS
SrAT7ovJ
Contact Person:
Paw A. fir, i11
Phone Number:
0?0 )2 33+ 79 2 S e.xr 3 i (�
For projects with multiple basins, specify which basin this worksheet applies to: O N (P 3 AS I,J
Elevations
Sediment Chamber
Bottom: 10 final
Top of Sand: N/A
Weir. 8.5 finsl
Grate: N t, finsl
Areas
Drainage Area: 58,370 ft
Bottom Area: s12 ft
Design Storage Area: i 72 tlr
Volumes
Sand Chamber
70 final
0.5 fmsl
V.5 final
"A finsl
(1loor of the sand filter)
(min. 18"above bottom)
(weir into the sand chamber)
(top of the grate)
440 ftZ (min. 360)? per acre of drainage area)
765 ft (at the weir elevation ofthe sand filter)
Required Volume: 725 ft' 77.5 ft' (Min. 540 ft' per acre of drainage area)
Volume Provided: I11 ft' 8(0+ ft' (volume provided at the weir elevation)
Total Volume Provided (both chambers) �980 ft
Other Parameters 11
Drawdown Orifice Size: G (maximum 6"diameter)
Orifice Invert Elevation: 7.00 finsl (usually the floor of the sand filter)
Time to dmwdown: RPPax. 23.0 hours (must be 1524 hours)
IT. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the latest version of the Stormwater Best Management
Practices Manual (N.C. Department of Environment and Natural Resources) and Administrative Section 15A
NCAC 2H.1008.
Initial in the blank space provided in front of each item to indicate the following design requirements have been met
and supporting documentation is attached. If the applicant has designated an agent in the Stormwater Management
Permit Application Form, the agent may initial below. If a requirement has not been met, please attach written
justification.
Form SWU-
Page 1 of 3

Permit No.
(Applicant or authorized agent- Please initial in the appropriate blanks or mark the blank N/A if it does not
apply)
Fits a. Each chamber (sediment and sand chamber) of the sand filter provides a minimum surface area of 360
square feet per acre of drainage area.
N$_ b Fach chamber (sediment and sand chamber) of the sand filter provides a minimum volume of 540 cubic
feet per acre of drainage area.
ft c. A minimum of 18" of sand is provided in the sand chamber.
iU_ d. Positive drainage to the sand filter has been provided either in conduit or surface drainage.
PAS e. The sediment chamber has no other outlet except to the sand chamber.
PAS f. The outlet from the sediment chamber to the sand chamber results in a sheet flow condition.
PA g. An outlet drain has been provided in the sand chamber which will completely empty the sand chamber
within 24 hours.
h. No single outlet pipe is sized greater than C', to maintain a minimum of 12" of sand depth above the
orifice.
i. The drainage area to the sand filter does not exceed 50 acres.
�s j. Where stormwater quantity control is required by local ordinance, runoff that will flow over the sand
filter has been considered in addition to the runoff flowing from the normal outlet of the sand filter.
k. Methods to capture trash have been provided at each inlet to prevent premature failure.
M. SAND FILTER OPERATION AND MAINTENANCE AGREEMENT
Regular maintenance is essential to the long-term performance and durability of the sand filter, as it is with all
stomrwatcr BMP's. The Sand Filter system is defined as the sediment chamber, the sand chamber, and the flow
regulator or outlet device.
This system (check one) ❑ does ® does not incorporate a vegetated filter.
This system (check one) ❑ does ® does not incorporate non-integrated pretreatment.
At a minimum, the following maintenance activities shall be performed
-
I Depending on the types of activities occurring within the drainage area, most sand filters will show a
decreased capacity for filtration after a few years. At least once a year, each filter must be inspected after a
1" design storm event to determine if the filter bed is passing the runoff within 24 hours.
2. If the filter is not passing the runoff completely within 24 hours, the first n3" of discolored sand must be
removed and replaced with new sand. The removed sand must be dewatered and disposed of properly.
3. At the same time that maintenance is performed on the sand chamber, the sediment chamber shall be
pumped and cleaned. Remove accumulated sediment when it reaches a height of 6" in the sediment
chamber. The removed sediment should be dewaiered and disposed of properly.
4. At least once every quarter, check that the drawdown orifice is clear of obstruction.
5. Vegetation within an open sand filter must be mowed regularly to limit the height to 12". Vegetation within
a closed sand filter must be removed.
6. Direct access to the sand and sediment chambers must be provided for maintenance and inspection.
Form SWU-
Page 2 of 3

Permit No.
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 and prior to making any changes to
the system or to the responsible party.
Print name and title:
Mailing Address:
Phone:
Signature
Note: The lega
majority interel
accepted by the
QJ
-G446
Date �0
5onsible party shall not be a homeowners association unless the developer no longer holds a
a resident of the subdivision has been named the president, or a performance bond has been
Iq li
{ t9' fiA 11 _ �O 1t\ P� bdh a Notary Public for the State of - - o' I ' 'na
County of VNfOk4 do hereby certify that rrt rd ( •`i
personally appeared before me this the 20" -6-ALL and acknowledge the
due execution of the foregoing sand filter maintenance requirements. Witness my hand and official seal,
i a S
My commission expires
tt�
Form SWU-
Page 3 of 3
SEAL

Permit No.
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form may be photocopied for use as an original
DWO Stormwater Management Plan Review:
A complete stormwater management plan submittal includes an application form, a wet detention basin
supplement for each basin, design calculations, and plans and specifications showing all basin and outlet
structure details.
1. PROJECT INFORMATION
Project Name: W1%SH14GTotJ h Rt (Zc CSC CMS STt�T►oYJ
Contact Person: PA vt_ A. Sm ms Phone Number: ( 704 ) 334-7125 cxr 31 to
For projects with multiple basins, specify which basin this worksheet applies to: Oucr !3 a Jid
elevations
Basin Bottom Elevation 4.0 ft.
Permanent Pool Elevation 6. S ft.
Temporary Pool Elevation 3.7-5 ft.
areas
Permanent Pool Surface Area 4i 2 sq. ft.
Drainage Area I • rv4 ac.
Impervious Area I.0 ac.
(floor of the basin)
(elevation of the orifice)
(elevation of the discharge structure overflow)
(water surface area at the orifice elevation)
(on -site and of( -site drainage to the basin)
(on -site and off site drainage to the basin)
volumes
Permanent Pool Volume 107V cu. ft. (combined volume of main basin and forebay)
-Temporary Ptiol .Volume I6*1 O 1 .. cu. ft. (volume detained above the permanent pool) ..
Forebay Volume N. 4A • cu. ft. (approximately 20% of total volume)
140R•'s F44iiGA4 Nor RGQVIA00 00t. TO 5AN0 F1'ILA -
1,OJ2 W jolum%! IN SC0,~WT CkAkM&-ti.
Other parameters
SA/DA1 S.7 (surface area to drainage area ratio from DWQ table)
Diameter of Orifice 1.2 S in. (2 to 5 day temporary pool draw -down required)
Design Rainfall 3.2 in.
Design TSS Removal 2 QO % (minimum 85% required)
Ponn SWU-102 Rev 3.99 Page 1 of 4

2. If this application is oetng,suomtueu a U'C ---------- --
existing permit number and its issue date (if known),.-
3. Specify the type of project (check one):
Low Density ,High Density _Redevelop
General Permit Other
4. Additional Project Requirements (check applicable blanks):
_CAMA Major _Sedimentation/Erosion Control _404/401 Permit ^NPDES Stormwater
Information on required state permits can be obtained by contacting the Customer Service Center at
1-871-623-6748.
RI. 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 .
THE SroR�vn lh2 Witt '(fl 12rtgttro DY a_4At i Ftl1r?Z WHtcH W�tL
p[SeHA0.UL' IrJTb A ?e1kMAMLrfJ1_ WtEr Ot:T -JT1o.J 90v3J).,
2. Stormwater runoff from this project drains to the TAR " r A M I u e-O River basin-
3. Total Project Area 2.2-acres
5. How many drainage areas does the project have? 1
4. Project Built Upon Area: 4! 9.z _-..%
6. 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.
Receiving Stream Name rpm qA t Yo T
Receiving Stream Class
c. S�J t 1 f W
Drainage Area
1 .7 2- Ac.
Existing Impervious Area
Proposed Impervious Area
0.00 AL
1.0B AC.
%Impervious Area (total)
63
On -site Buildings
0.2$ okc
On-siteStreets
0.00 r_
On -site Parking
O.b7 A( -
On -site Sidewalks
0.06 AC
Other on -site j{,ssiett (rvAr�
O. 10 AL
Off -site
O. oOAc-
Total: k.08
Total:
Impervious area is defined as the built upon area including, but not umitea ro, ouuomgs, rodm, y-15 .,
sidewalks, gravel areas, etc.
Form SWU-101 Version 3.99 . Page 2 of 4

j�
.. ,.
,
� .�
t :.
i
� �..
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7. How was the off -site impervious area listed above derived? 1�o O:F-S 1 T!E OtAlNA6E . If _
fshrr4 no T T-11-E. —
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
The following italicized 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.
1. The following covenants are intended to ensure ongoing compliance with state stormwater management permit number
as issued by the Division of Water Quality. These covenants may not be
changed or deleted without the consent of the State.
Z. No more than square feet of any lot shall be covered by structures or impervious materials.
Impervious materials Include asphalt, gravel, concrete, brick, stone, slate or similar material but do not include wood
decking or the water surface of swimming pools.
3. Swales shall not be filled in, piped, or altered except as necessary to provide driveway crossings.
4. Built -upon area in excess of the permitted amount requires a state stormtater management permit modification prior to
construction.
5. All permitted runofffrom outparcels or future development shall be directed into the permitted stormwater control
system. These connections to the stormwater control system shall be performed in a manner that maintains the Integrity
and performance of the system as permitted.
By your signature below, you certify that the recorded deed restrictions and protective covenants for this project
shall include all the applicable items required above, that the covenants will be binding on all parties and persons
claiming under them, that they will run with the land, that the required covenants cannot be changed or deleted
without concurrence from the State, and that they will be recorded prior to the sale of any lot.
V. SUPPLEMENT FORMS
The applicable state stormwater management permit supplement form(s) listed below must be submitted for each
BMP specified for this project. Contact the Stormwater and General Permits Unit at [phone] for the status
and availability of these forms.
Form SWU-102
Wet Detention Basin Supplement
Form SWU-103
Infiltration Basin Supplement
FormSWU-104
Low Density Supplement
Form SWU-105
Curb Outlet System Supplement
Form SWU-106
Off -Site System Supplement
Form SWU-107
Underground Infiltration Trench Supplement
Form SWU-108
Neuse River Basin Supplement
Form SWU-109
Innovative Best Management Practice Supplement
Form SWU-101 Version 3.99 Page 3 of 4

VI. SUBMITTAL REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ).
A complete package includes all of the items listed below. The complete application package should be
submitted to the appropriate DWQ Regional Office:
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 _— {SAS
• One copy of the applicable Supplement Form(s) for each BMP q
• Permit application processing fee of $420 (payable to NCDENR) _
• Detailed narrative description of stormwater treatment/management AC
• Two copies of plans and specifications, including:
Development/Project name
Engineer and firm
-Legend
- North arrow
- Scale
- Revision number & date
- Mean high water line
- Dimensioned property/project boundary
- Location map with named streets or NCSR numbers _
- 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)
VIL AGENT AUTHORIZATION
If you wish to designate authority to another individual or firm so that they may provide information on your
behalf, please complete this section.
Designated agent (individual
Mailing Address:
Zip:
Phone: ( Fax:
VIII. APPLICANT'S CERTIFICATION
✓CiVM/l+o n
I. (print or type name of person listed in General Information, item 2)
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 confo ce with the approved plans, that the required deed restrictions
and protective covenants will be recor t the pr osed project complies with the requirements of 15A
NCAC 2H .1000. i
Signature: r Date: °��
Form SWU-101 Version 3.99 Page 4 of 4

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®TEWART
Basin 1
Wet Detention Pond Sizing
(for90%TSS removal)
Project
Rojecl No.
Date
Washmgeon Fire Station
X5013
30-Nov-06
Required Surface Ara
uimd Store
fm 1 at inch of nmoff
Drrta Total Drainage A -
1.64 ae
Sitryk Method
Tool iroptrviaa Awe—
1.04 ac
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0.63
Rv-0.05+0.009(t)
1 • % inQnvioua
0.63
Pam Pool Dcplb-
4.00 A
SAIDA Ratio(Coaswl Counties)-
5.70
Rv—
0.62 be
Scface Area Required-
4,072 of
vdurna-
3,695 of
0,09 Be
Surface Area Pr aldM• 0.10 at Vdume PmWdM- 1 S2efis sv W di..dimeusthambarofaanMW
4A82 of Authorized ellmi0admotfinehs7 for4YNCNt o trcem nand Ohm.
Calculation Mc1hMa sin takes fiom NC V INR Stomnvater Rat Madgarcot Practices mmual, April 1999
s a
.sin Dowaterina
FAs x
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200 S. College Street, Suite 720 Charlotte, NC 28220 Tel [phone] Fax [phone] wvrw.stewert-enp.cem
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STORMWATER MANAGEMENT PLAN
For RECEIVED
FIRE —RESCUE —EMS STATION GCT � 0 2006
CITY OF WASHINGTON DWQ_WAR®
15 r" STREET EXTENSION
WASHINGTON, NORTH CAROLINA
October 16th, 2006
Prepared for:
Stewart Cooper Newell Architects A
719 East Second Avenue
Gastonia, NC 28054
704-865-6311
Prepared by:
STEWART ENGINEERING, INC.
200 South College Street, Suite 720
Charlotte, NC 28202
704-334-7925
31592 (o V-Z?j o OCT LL
1 9 2006
i'.NGltl*.N'�
�ON
�Il AIjIB\\\`\ LWASHINGT
ON REGIONAL ND QUALITY I OFFICE
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x5015.00
Issued: 8/01/06
Q10 = 17.22 cfs
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d50 = 2 in
dmax = 1.5 d50
dmax = 3 in
Thickness = 1.5 dmax
Thickness = 5in
0 PIPE
n
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Rip Rap Apron - FES 1
V = 3.4 fps
La=8ft
I� 8
STEWART ENGINEERING
Do=24in

X5015.00
Issued: 8/1/06
• Q10 = 5.64 cfs
From fig. 8.06a
d50=tin
dmax = 1.5 d50
dmax = 3 in
Thickness = 1.5 dmax
Thickness =5in
•
PIPE
Rip Rap Apron - FES 11
V = 4.85 fps
La=7ft
7'
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STEWART ENGINEERING
Do=18in

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7. All components of the wet detention basin system shall be maintained in good working order.
U
to
1 acknowledge and agree by my signature below that I am responsible for the performance of the seven
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.
Printname: G. StA\TH
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.
a Notary Public for the State of l &We .+ C-arjx"'i 4 ,
Countyof do hereby certify that 7:5 H C. StwtTrk
personally appeared before me this ,a `4 day of ro3aZ Z4DD(A> , and acknowledge the due
execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal,
SEAL
My commission expires EW 4,
Form SWU-102 Rev 3.99
Page 4 of 4
I

RECEIVED '
O TT 1 6 2006
STEWART ENGINEERING

S .e-a rd << P�61 is
<.rsr.0FFICE;USE,"0NL
Date Received Fee Paid Permit Number
i,i 1 706 �+
Ir1 State of North Carolina 5WACK c ��/0
b �R° Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may he photocopied for use as an original
I. GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
CITY OF LJAs4,royTz.-3uJ
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
3. Mailing Address for person listed in item 2 above:
410 tJ o rt.Tb1 M a a 1nz r S -rn ,.-7 ---r
WNSHt"Ta,J State: tJ L Zip:. Z7537
Telephone Number: ( 2 S Z ) 9' 4 g — `/ q 00
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
lJlW F12.L QC'ScoL (-MS ST�1T7orJ
S. Location of Project (street address):
I S TN ST2(Ft , LX7-(F- uSIOrJ
City: t-i A S H r.J C� Tp r.) County: (3 01'%0 A.
6. Directions to project (from nearest major intersection):
I.rj MIL-4S d�)o2Ttt A,_o.7�,. Hw`f 264 Flk--% .T.JnkSccilo-i of
HW`'( Z65. 4 Hw`f 17 R%(e"T o"7 LJA51+r",6roa 3T2C-=- 0.5 M%% kzs orJ(-ePT.
I /I
7. Latitude: 3 5" 3 3 5 9 lJ Longitude: %% e 01 , 23 1)l— of project
ro'ect
8. Contact perso who can answw�r questions about the project: 7
NameTelephone Number.
IL PERMIT INFORMATION:
1. Specify whether project is (check one): New Renewal Modification
Form SWU-101 Version 3.99 . Page 1 of 4

2. If this application is being submitted as the result of a renewal or modification to an existing permit, list the
existing permit number and its issue date (if
3. Specify the type of project (check one):
Low Density High Density _Redevelop X General Permit Other
4. Additional Project Requirements (check applicable blanks):
CAMA Major _Sedimentation/Erosion Control _404/401 Permit NPDES Stormwater
Information on required state permits can be obtained by contacting the Customer Service Center at
1-877-623-6748.
III. PROJECT INFORMATION
1. In the space provided below, summarize how stormwater will be treated. Also attach a detailed narrative
(one to two pages) describing stormwater management for the project .
TC Sr01k-WATE'2 WIL_,. ItC T2(i-ATM DY TKO RA%W GA/LDI_-w5 10 SC2tt;S
NwD 'fl+inl T'H( OVL-AFLOW W%LL DRA,I,j twTo A D2 t DFTYwTloKj PO.Jib_
2. Stormwater runoff from this project drains to the
3. Total Project Area: 2.21 acres
5. How many drainage areas does the project have? ' Z
'PA M I t_ c. O River basin.
4. Project Built Upon Area: 48.2 %
6. 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.
61eF511T Pt PCO .TNRo"K .S 1n
Bast nI�B Omauon }y,€r.y
r Dra(na`gerA`rea)1:'vA
sDrai ge r a�2
Receiving Stream Name
CH cRay UW ORtA1+J0to Yq,a
c CR-- n
Receiving Stream Class
C -skiJ NSW
C105Ld
Drainage Area
I .7 Z AL
2.2.9 AC
Existing Impervious' Area
0.00 AC.
0. 31 A (-
Proposed Impervious'Area
1. OB AC
0. 00 AC
% Impervious` Area (total)
G 3
13.5
'VJ„q
Impery ousa Surface,F�reak� ,
r-. .. _'_, �._ . Lv
;„ Drainage. Ar_ea,'Dramage
ii.
'ti.. r 1',+.. t
Areai2 >,•
On -site Buildings
0.25 qc
0.00 AC
On -site Streets
0.00 h
0.00 P%C-
On-site Parking
O.0 P\(—
0,00 ne
On -site Sidewalks
0.06 NC_
0.00 AC
Other on-site&SIOus taPAJi10
0.10AC
D.DO AL
Off -site
0.00A(_
i 0,31 Ar-
Total: ( , 0 8
1Total: 0.31 AC
Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
Form SWU-101 Version 3.99 Page 2 of 4

7. Flow was the off -site impervious area listed above derived? THC Or'f S JI 1'\4 t"AS urw2r
Dck NwkO PAz+A- ALR%AL (Tro P06AAP111C_ MAPPInJro
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
The following italicized 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.
1. The following covenants are intended to ensure ongoing compliance with state stormwater management permit number
as issued by the Division of Water Quality. These covenants may not be
changed or deleted without the consent of the State.
Z. No more than square feet of any lot shall be covered by structures or impervious materials.
Impervious materials include asphalt, gravel, concrete, brick, stone, slate or similar material but do not include wood
decking or the water surface of swimming pools.
3. Swales shall not be filled in, piped, or altered except as necessary to provide driveway crossings.
4. Built -upon area in excess of the permitted amount requires a state stormwater management permit modification prior to
construction.
5. All permitted runoff from outparcels or future development shall be directed into the permitted stormwater control
system. These connections to the stormwater control system shall be performed in a manner that maintains the integrity
and performance of the system as permitted.
By your signature below, you certify that the recorded deed restrictions and protective covenants for this project
shall include all the applicable items required above, that the covenants will be binding on all parties and persons
claiming under them, that they will run with the land, that the required covenants cannot be changed or deleted
without concurrence from the State, and that they will be recorded prior to the sale of any lot.
V. SUPPLEMENT FORMS
The applicable state stormwater management permit supplement form(s) listed below must be submitted for each
BMP specified for this project. Contact the Stormwater and General Permits Unit at [phone] for the status
and availability of these forms.
Form SWU-102
Wet Detention Basin Supplement
Form SWU-103
Infiltration Basin Supplement
Form SWU-104
Low Density Supplement
Form SWU-105
Curb Outlet System Supplement
Form SWU-106
Off -Site System Supplement
Form SWU-107
Underground Infiltration Trench Supplement
Form SWU-108
Neuse River Basin Supplement
Form SWU-109
Innovative Best Management Practice Supplement
Form SWU-101 Version 3.99 Page 3 of 4

'h
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 Regional Office.
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 Q643
• One copy of the applicable Supplement Form(s) for each BMPIPAS
• Permit application processing fee of $420 (payable to NCDENR) iA-
• Detailed narrative description of stormwater treatment/management P
• Two copies of plans and specifications, including: Fl�
Development/Project name
Engineer and firm
-Legend
North arrow
Scale
Revision number & date
Mean high water line
Dimensioned property/project boundary
Location map with named streets or NCSR numbers
Original contours, proposed contours, spot elevations, finished floor elevations
Details of roads, drainage features, collection systems, and stormwater control measures
Wetlands delineated, or a note on plans that none exist
Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations
Drainage areas delineated
Vegetated buffers (where required)
VII. AGENT AUTHORIZATION
If you wish to designate authority to another individual or firm so that they may provide information on your
behalf, please complete this section.
Designated agent (individual or firm):
Mailing Address:
City: State:
Phone: ( ) Fax: (
VIII. APPLICANT'S CERTIFICATION
I, (print or type name ofperson listed in General Information, item 2) Q e3 CS �`
'Mt
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 confo nce with the approved plans, that the required deed restrictions
and protective covenants will be recor a ttaat the proposed project complies with the requirements of 15A
NCAC 2H .1000.,,----,
Date: � (-%
°�
Form SWU-101 Version 3.99 Page 4 of 4