HomeMy WebLinkAboutSW7011204_CURRENT PERMIT_20011221STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW 7611)W4
DOC TYPE
� CURRENT PERMIT
APPROVED PLANS
❑ HISTORICAL FILE
DOC DATE
2Z21-2 /l2 2
YYYYMMDD
b) f 1 PI-0
Michael F. Easley
Governor
William G. Ross Jr., Secretary
Department of Environment and Natural Resources
Gregory J. Thorpe, Ph.D., Acting Director
Division of Water Quality
DIVISION OF WATER QUALITY
December 21, 2001
Mr. Garland Scott, President
Tideland Develpoment Corporation
857 Halstead Blvd.
Elizabeth City, NC 27909
Subject: Permit No. SW7011204
Magnolia Woods
High Density Stormwater Project
Pasquotank County
Dear Mr. Scott;
The Washington Regional Office received the completed
Stormwater Application for the subject project on.December 7, 2001.
Staff review of the plans and specifications has determined that
the project, as proposed, will comply with the Stormwater
Regulations set forth in Title 15A NCAC 2H.1000. We are forwarding
Permit No. SW7011204 dated December 21, 2001 to Tideland
Development Corporation for the construction and operation of a wet
detention pond to serve Magnolia Woods in Elizabeth City, NC.
This permit shall be effective from the date of issuance until
December 21, 2011 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 150B of the North
Carolina General Statutes, and filed with the Office of
Administrative Hearings, P.O. Drawer 27447, Raleigh, NC 27511-7447.
Unless such demands are made this permit shall be final and
binding.
943 Washington Square Mall Washington, NC 27889 252-946-6481 (Telephone) 252-946-9215 (Fax)
Garland Scott
December 21, 2001
Page Two
If you have any questions, or need additional information
concerning this matter, please contact Roger Thorpe at (252) 946-
6481, extension 214.
Sincerely,
-'�'3im Mulligan
Water Quality Regional Supervisor
Washington Regional Office
cc: Hyman & Robey
Pasquotank County Inspections
Washington Regional Office
Central. Files
r
State Stormwater Management Systems
Permit No. SW7011204
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
Tideland Development Corporation
Pasquotank County
FOR THE
construction, operation and maintenance of stormwater management
systems in compliance with the provisions of 15A NCAC 2H.1000
(hereafter referred to as the "stormwater rules") and the approved
stormwater management plans and specifications and other supporting
data as attached and on file with and approved by the Division of
Water Quality and considered a part of this permit for a wet
detention pond to serve Magnolia Woods in Elizabeth City, NC.
This permit shall be effective from the date of issuance until
December 21, 2011 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 on page 2 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.
DIVISION OF WATER QUALITY
PROJECT DATA
Project Name: Magnolia Woods
Permit Number: SW7011204
Location: Pasquotank County
Applicant: Tideland Development Corporation
Mailing Address: 857 Halstead Blvd
Elizabeth City, NC 27909
Application Date: 12/7/2001
Receiving Stream: Knobbs Creek
Classification of Water Body: C-SWP
Site Area:
Total Impervious:
Pond Depth:
Required Storage Volume:
Provided Storage Volume:
Required Surface Area:
Provided Surface Area
8.41 ac
3.06 ac
6.0 ft
11, 514 cf
16,405 cf
6, 586 sf
8, 926 sf
Controlling Orifice: 1.75 inch orifice @ elev 6.0 ft
9. 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. 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).
t
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.
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.
S. 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.
Permit issued this the 21 st day of December, 2001.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
r- Gregdry J. Thor{e,-Ph.D., Acting Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW7011204
Magnolia Woods
Pasquotank County
Stormwater Permit No. SW7011204
Designer's Certification
I,
, as a duly
registered Professional Engineer in the State of North Carolina,
having been authorized to observe (periodically/weekly/full time)
the construction of the project,
for
(Project)
(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
:ONLY
;OFFICF`USE.
Date Received
Fee Paid
Permit Number
5 roei^ 7 0 1 19-U t�
M"CEIVED State of North Carolina
Department of Environment and Natural Resources
CEC - 7 2001 Division of Water Quality
1 (� WAWWATER MANAGEMENT PERMIT APPLICATION FORM
V� �L This form may be photocopied for use as an original
I. GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
Tideland Development Corporation
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance)
Garland Scott, President
3. Mailing Address for person listed in item 2 above:
857 Halstead Blvd.
City: Elizabeth City State: W Zip: 27909
Telephone Number: 2-92 771-5006
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on
plans, specifications, letters, operation and maintenance agreements, etc.):
Magnolia Woods
5. Location of Project (street address):
Ranch Drive, SR 1190
City: Elizabeth City
County: Pasquotank
6. Directions to project (from nearest major intersection):
Coming on 17 South turn right onto Oak Stump Road at'the split of 1.7 Bypass and
17 Business, project swill be at the end of first road on the left.
7. Latitude: 76? 15, Longitude:' 360 17, of project
8. Contact person who can answer questions about the project:
Name: Garland Scott Telephone Number: ( 252 ) 77.1-5006
II. PERMIT INFORMATION:
I. Specify whether project is (check one): X New
Form S WU-101 Version 3.99
Pa-e 1 of 4
ti
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 X _High Density Redevelop General Permit Other
4. Additional Project Requirements (check applicable blanks):
CAMA Major X Sedimentation/Erosion Control _404/401 Permit __X_NPDES Stormwater
Information on required state permits can be obtained by contacting the Customer Service Center at
1-8�-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.
Stormwter will sheet flow across grassed lots and be collected in curb and gutter.
It will be routed to a dentEent on pond d6si"1n2d _for .90% TSS removal by underground
piping to grass swale with 3:1 side slopes.
2_ Stormwater runoff from this project drains to the Pasauotanlc
3. Total Project Area: 8.41
River basin.
acres 4. Project Built Upon Area: 36.39 %
5. How many drainage areas does the project have? 1
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.
$asin'Informatron
Drainage Area 1'"
Drairiage`Area 2�w
Receiving Stream Name
I Knobbsl Creek
Receiving Stream Class
I C SW
Drainage Area
7
Existing Impenvious" Area
-0-
Proposed Irn ervious"Area
3.06
% "pervious* Area (total)
36.39
�Iil eT4ioiiS rSiLrfaCe Aiea`" ` Drainage Area 1 ',a"i. x? ',Drainage'AfEa 2� M s _-
u:
On -site Buildings
On -site Streets 0.78
On -site Parking
On -site Sidewalks 0.11 AC
tiaOther on -site otsim per 2.17 AC
Off -site
Total: 3.o6 Total:
* Impervious area is defined as the built upon area including, but not Iimited to, buildings, roads, parking areas, -
sidewalks, gravel areas, etc.
Form SWU-101 Version 3.99
Paoe 2 of 4
7. How was the off -site impervious area listed above derived? N/A
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.
No more than 4,500 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 per formed 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 (919) 733-5083 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 5WU-108
Neuse River Basin Supplement
Form SWU-109
Innovative Best Management Practice Supplement
Form SWU-101 Version 3.99 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 Regional Office.
1. Please indicate that you have provided the following required information by initialing in the space
provided next to each item.
• Original and one copy of the Stormwater Management Permit Application Form
• One copy of the applicable Supplement Form(s) for each BMP
• Permit application processing fee of $420 (payable to NCDENR)
• Detailed narrative description of stormwater treatment/management
• 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)
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): Hyman & Roney
Mailing Address: 529 S. Hughes Blvd.
City:
Elizabeth City
Phone:( 252 ) 335-1888
VIII. APPLICANT'S CERTIFICATION
State: NC
Zip: 27909
Fax: ( 252 ) 338-5552
1, (print or type name of person listed in General Information, item 2) Garland Scott
certify that the information included on this permit application form is, to the best of my knowledge, correct and
that the project will be constructed in conformance with the approved plans, that the required deed restrictions
and protective covenants will be recorded, and that the proposed project complies with the requirements of 15A
NCAC 2H .1000.
Signature: I Date:
Form SWU-101 Version 3.99 Pape 4 of 4
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 far use as an original
Dom) 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.
I. PROJECT INFORMATION
Project Name: _ Magnolia Woods
Contact Person: Garland Scott Phone Number: (252 ) 771-5006
For projects with multiple basins, specify which basin this worksheet applies to:
elevations -
Basin Bottom Elevation 0.0 ft.
Permanent Pool Elevation 6.0 ft.
Temporary Pool Elevation 8.07 ft.
(floor of the basin)
(elevation of the orifice)
(elevation of the discharge structure overflow)
areas
Permanent Pool Surface Area 8,926 sq. ft. (water surface area at the orifice elevation)
Drainage Area 7.17 ac. (on -site and off -site drainage to the basin)
Impervious Area 3.06 ac. (on -site and off -site drainage to the basin)
volumes
Permanent Pool Volume
Temporary Pool Volume
Forebay Volume
Other parameters
SA/DA1
Diameter of Orifice
Design Rainfall
Design TSS Removal 2
27,864
16,405
4,174
2.1
1.75
cu. ft. (combined volume of main basin and forebav)
cu. ft. (volume detained above the permanent pool)
cu. ft. (approximately 20% of total volume)
(surface area to drainage area ratio from DWQ table)
in. (2 to 5 day temporary pool draw -down required)
10 Yr stormn. f�) Il
90 % (minimum 85% required)
Form SWU-102 Rev 3.99 Pagel of 4
Footnotes:
' When using the Division SAIDA tables, the correct SAIDA ratio for permanent pool sizing should be computed based upon the
actual impervious % and permanent pool depth. Linear interpolation should be employed to determine the correct value for non-
standard table entries.
Z In the 20 coastal counties, the requirement for a vegetative filter may be waived if the wet detention basin is designed to provide
90% TSS removal. The NCDENR BNIP manual provides design tables for both 85% TSS removal and 90`7o TSS removal.
H. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual
(N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative Code
Section: 15 A NCAC 2H .1008.
Initial in the space provided 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, attach justification.
Applic is Initials
a. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet).
b. The forebay volume is approximately equal to 20% of the basin volume.
c. The temporary pool controls runoff from the design storm event.
d. The temporary pool draws down in 2 to 5 days.
e. If required, a 30-foot vegetative filter is provided at the outlet (include non -erosive flow
calculations)
f. The basin length to width ratio is greater than 3:1.
h_1 g.
h.
i.
The basin side slopes above the permanent pool are no steeper than 3:1.
A submerged and vegetated perimeter shelf with a slope of 6:1 or less (show detail).
Vegetative cover above the permanent pool elevation is specified.
A trash rack or similar device is provided for both the overflow and orifice.
--- k. A recorded drainage easement is provided for each basin including access to nearest right-
of-way.
1. If the basin is used for sediment and erosion control during construction, clean out of the
basin is specified prior to use as a wet detention basin.
--------- m. A mechanism is specified which will drain the basin for maintenance or an emergency.
III. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT
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) 0 does ID does not incorporate a vegetated filter at the outlet.
This system (check one) Otdoes 0 does not incorporate pretreatment other than a forebay.
Form SWU-102 Rev 3.99 Pape 2 of 4
Attachment to WET DETENTION 13ASIN SUPPLEMENT
For Magnolia Woods
b. The forebay volume is equal to 1 5% of the total pond volume. Total surface
area of the pond was increased by approximately 16% above minimum
requirements.
f. Due to the pond's irregular shape; the overall length and the average width result
in a ration of approximately 2.2:1.
e. Pond has been designed for 90% TSS removal.
k. Pond discharges directly into on -site swamp.
M. Emergency drain would have to be located below the seasonal water table. Pond
must be emptied by pumping.
Maintenance activities shall be performed as follows:
After every significant runoff producing rainfall event and at Ieast monthly:
a. Inspect the wet 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 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 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 4.5
When the permanent pool depth reads 2.25
feet in the main pond, the sediment shall be removed.
feet in the forebay, the sediment shall be removed.
BASIN DIAGRAM
(fill in the blanks)
Permanent Pool EIevation 6.4
Sediment Re oval El. 3.75 75 0
---------- Sediment Removal Elevation 1.5
Bottom Ele ation 3.0 %------ ---------------------------------
Bottom Elevation 0. n
FOREBAY MAIN POND
75 %
25%
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.
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.
Form SWU-102 Rev 3.99 Page 3 of 4
7. All components of the wet detention basin system shall be maintained in good working order.
I 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.
Print name: Garland Scott
Title: president, Tideland Dc_,velopment Corporation
Address: 857 Halstead Blvd City, NC ?.7909
Phone: (252) 771-5006
Signature: 4% n.. p _ - - --
Date:_ 12 Q a I
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. he-0rbS�ooc , a Notary Public for the State of gar -I Carol I r1(A.- ,
County of arY'A&exr —,do hereby certify that CMr [Q-Id SU-i+
personally appeared before me this 4+h day of �PCEIMbNO-E _, Z601 , and acknowledge the due
execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official sea].
SEAL
My commission expires e 8 1 os
Form SWU-102 Rev 3.99 Page 4 of 4