HomeMy WebLinkAboutSW8020302_CURRENT PERMIT_20020628STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SWAOAX��__
DOC TYPECURRENT
PERMIT
APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYMMDD
Michael F. Easley, Govemor
William G. Ross, Jr., Secretary
North Carolina Department of Environment and Natural Resources
- - - - - -__-_ -- �- --�- Alan'W:-Klimek' P.E., -Directof — - -
Division of Water Quality
Wilmington Regional Office
June 28, 2002
Mr�lldilliam-Grathwol-President
Coastal Carolina Developers, Inc.
PO Box 3403
Wilmington, NC 28406
Subject: Permit No. SW8 020302
Courtney Pines Phase II
High Density Subdivision Stormwater Project
New Hanover County
Dear Mr. Grathwol:
The Wilmington Regional Office received a complete Stormwater Management Permit Application
for Courtney Pines Phase 11 on June 26, 2002. Staff review of the plans and specifications has
determined that the project, as proposed, will comply with the Stormwater Regulations set forth in
Title 15A NCAC 2H.1000. We are forwarding Permit No. SW8 020302, dated June 28, 2002, for
the construction of the project, Courtney Pines Phase II.
This permit shall be effective from the date of issuance until June 28, 2012, 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 27611-7447. Unless such demands are made this permit shall be final
and binding.
If you have any questions, or need additional information concerning this matter, please contact
Noelle Lutheran, or me at (910) 395-3900.
Sincerely,
r
Rick Shiver
f Water Quality Regional Supervisor
RSS/:nml S:1WQSISTORMWATIPERMIT1020302
cc: Charles Cazier
Tony Roberts, New Hanover County Inspections'
Beth E. Wetherill, New Hanover County Engineering
Division of Coastal Management
Noelle Lutheran
Wilmington Regional Office
Central Files
NCt EUR
N.C. Division of Water Quality 127 Cardinal Drive Extension Wilmington, N.C. 28405 (910) 395-3900 Fax (910) 350-2004 Customer Service
800-623-7748
State Stormwater Management Systems
Permit No. SW8 020302
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
Coastal Carolina Developers,.lnc.
Courtney Pines Phase-ll
New Hanover County
601"H
construction, operation and maintenance of three wet detention ponds in compliance with the
provisions of 15A NCAC 2H .1000 (hereafter referred to as the "stormwater rules') and the
approved stormwater management plans and specifications and other supporting data as attached and
on file with and approved by the Division of Water Quality and considered a part of this permit.
This permit shall be effective from the date of issuance until June 28, 2012 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 3 of this permit, the Project Data Sheet. The subdivision is permitted for
57 lots, each allowed 3,500 square feet of built -upon area.
3. Approved plans and specifications for this project are incorporated by reference and are
enforceable parts of the permit.
4. This pond must be operated with a 30' vegetated filter.'
5. All stormwater collection and treatment systems must be located in either dedicated common
areas or recorded easements. The final plats for the project will be recorded showing all such
required easements, in accordance with the approved plans.
2
State Stormwater Management Systems'
Permit No. SW8 020302
DBIISION OF WATER QUALITY
—PROJECT DATA SHEET
Project Name:
Courtney Pines Phase 11
Permit Number:
SW8 020302
New Hanover -County
Applicant:
Mr. William Grathwol, President
Mailing Address:
Coastal Carolina_ Developers, Inc.
PO Box 3403 '
Wilmington, NC 28406
Application Date: June 26, 2002
Name of Receiving Stream / Index 4: Smith Creek / 18-74-63
Classification of Water Body: "C Sw"
Design Storm:
l inch
Pond A
Pond B
Pond Depth, feet:
5.5
5
Permanent Pool Elevation, FMSL:
35
35
Drainage Area, acres:
7.13
6.97
Total Impervious Surfaces, ft2:
114,089
90,351
57 lots at 3,500 ft2:
84,000 `'. '''
'59,500
Roads/Parking, ft2
30,089: , .
30,815
Offsite Area entering Pond, ft2:
none, per'Engineer
Required Surface Area, ftz:
7,202
6,683
Provided Surface Area, ft2:
8,095
7,626
Required Storage Volume, ft3:
12,780
11,086
Provided Storage Volume, W:
14,654
11,818
Temporary Storage Elevation, FMSL:
36.6
36.35
Controlling Orifice:
1.5" cp pipe
1.5" T pipe
Pond C
5.5
36
5.38
82,073
56,000
26,073
5,152
6,173
9,374
10,074
37.35
1.25" y pipe
J
3
State Stormwater Management Systems
Permit No. SW8 020302
II. SCHEDULE OF COMPLIANCE
No homeowner/lot owner/developer shall fill in, alter, or pipe any drainage feature (such as
swales) shown on the approved plans as part of the stormwater management system without
submitting a revision to the permit and receiving approval from the Division.
2. The permittee is responsible for verifying that the proposed built -upon area for the entire lot,
— -- -- --including.driveways and sidewalks, -does not exceed .the,allowable built-upon.arearOnce the _-
lot transfer is complete, the built -upon area may not be revised without approval from the
Division of Water Quality, and responsibility for meeting the built -upon area limit is
transferred to the individual property owner.
3. If an Architectural Review Committee (ARC) is required to review plans for compliance
with the BUA limit, the plans reviewed must include all proposed built -upon area. Any
approvals given by the ARC do not relieve the homeowner of the responsibility to maintain
compliance with the permitted BUA limit.
4. The permittee shall submit to the Director and shall have received approval for revised plans,
specifications, and calculations prior to construction, for any modification to the approved
plans, including, but not limited to, those Iisted below-, -.
a. Any revision to the approved plans, regardless of size.
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area.
e. Further subdivision, acquisition, or sale of tFie project area. The project area is
defined as all property owned by the permittee, for.which Sedimentation and Erosion
Control Plan approval was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the approved
plan.
5. 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.
7. The stormwater management system shall be constructed in it's entirety, vegetated and
operational for its intended use prior to the construction of any built -upon surface:
8. During construction, erosion shall be kept to a minimum and any eroded areas of the system
will be repaired immediately.
9. Upon completion of construction, prior to issuance of a Certificate of Occupancy, and prior
to operation of this permitted facility, a certification must. be.received from an appropriate
designer for the system installed certifying that the permitted facility has been installed in
accordance with this permit, the approved plans and specifications, and other supporting
documentation. Any deviations from the approved plans and specifications must be noted
on the Certification.
10. If the stormwater system was used as an Erosion Control device, it must be restored to design
condition prior to operation as a stormwater treatment device, and prior to occupancy of the
facility.
4
State Stormwater Management Systems
Permit No. SW8 020302
11. Decorative spray fountains will not be allowed in the stormwater treatment system.
12. Permanent seeding requirements for the stormwater control must follow the guidelines
established in the North Carolina Erosion and Sediment Control Planning and Design
Manual.
13. The permittee shall at all times provide the operation and maintenance necessary -to assure
.______.-_.--that-all-component s-of the permitted-stormwater system furicfion at aptimum efficiency. The
approved Operation and Maintenance Plan must be followed in its entirety and maintenance
must occur at the scheduled intervals including, but not limited to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and revegetation of side slopes.
d. Immediate repair of eroded areas.
e. Maintenance of side slopes in accordance with approved plans and specifications.
f. Debris removal and unclogging of structures, orifice, catch basins and piping.
g. Access to all components of the system must be available at all times.
14. Records of maintenance activities must be kept and made available upon request to
authorized personnel of DWQ. The records will indicate the date, activity, name of person
performing the work and what actions were taken.
15. Prior to the sale of any lot, deed restrictions must be recorded which limit the built -upon area
per lot to the amount as shown on the Project Data Sheet, per Section 1, Part 2. The recorded
statements must follow the form:
a. The following covenants are intended to ensure ongoing compliance with State
Stormwater Management Permit Number SW8 020302, as issued by the Division of
Water Quality under NCAC 2H.1000.
b. The State of North Carolina is made a beneficiary of these covenants to the extent
necessary to maintain compliance with the Storrnwater Management Permit. .
C. These covenants are to run with the land and 15e binding on all persons and parties
claiming under them.
d. The covenants pertaining to stormwater may not be altered or rescinded without the
express written consent of the State of North Carolina,' Division of Water Quality.
e. Alteration of the drainage as shown on the approved plans may not take place
without the concurrence of the Division of Water Quality.
f. The maximum built -upon area per lot is 3,500 square feet. This allotted amount
includes any built -upon area constructed within the lot property boundaries, and that
portion of the right-of-way between the front lot line and the edge of the pavement.
Built upon area includes, but is not limited to, structures, asphalt, concrete, gravel,
brick, stone, slate, coquina and parking areas, but does not include raised, open wood
decking, or the water surface of swimming pools.
g. Lots within CAMA's Area of Environmental Concern may be subject to a reduction
in their allowable built -upon area due to CAMA regulations.
h. All runoff on the lot must drain into the permitted system. This may be accomplished
through providing roof drain gutters which drain.to the street, grading the lot to drain
toward the street, or grading perimeter swales and -directing them into the pond or
street. Lots that naturally drain into the system are not required to provide these
measures.
5
-
State IStormwater Management Systems
r.. Permit No. SW8 020302
16. Prior to transfer of the permit, the pond must be inspected by DWQ personnel, and
_ _determined to.be.in compliancewith all.permit conditions. Any items not incompliance must -`
be repaired or replaced to design condition prior to the.transfer. Records of maintenance
activities performed to date will be required.
17. A copy of the recorded deed restrictions must be submitted to the Division within 30 days
of the date of recording the plat, and prior to selling lots. The recorded copy must bear the
sibnature_of.the_Perm_ ittee,.the.deed.book -number_and_page,-and-stamp/signature-of-the-
Register of of.
18. 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.
19. Built upon area includes, but is not limited to, structures, asphalt, concrete, gravel, brick,
stone, slate, coquina and parking areas, but does not include raised, open wood decking, or
the water surface of swimming pools.
III. GENERAL CONDITIONS
This permit is not transferable except after notice to and approval by the Director. In the
event there is a desire for the facilities to change ownership, or there is a name change of the
Permittee, a "Name/Ownership Change Form" must be submitted to the Division of Water
Quality accompanied by appropriate documentation from- the parties involved, including as
may be required, but not limited to, a deed of trust, recorded 'deed restrictions, Designer's
Certification and a signed Operation and Maintenance'plari. The project must be in good
standing with DWQ. The approval of this request will be considered on its merits and may
or may not be approved.
2. The permittee is responsible for compliance with the terms and conditions of this permit until
such time as the permit is reissued by the State to another responsible party.
Failure to abide by the conditions and limitations contained in this permit may subject the
Permittee to enforcement action by the Division of Water Quality, in accordance with North
Carolina General Statute 143-215.6A to 143-215.6C.
4. The issuance of this permit does not preclude the Permittee from complying with any and all
statutes, rules, regulations, or ordinances which may be imposed by other government
agencies (local, state, and federal) which have jurisdiction.
5. In the event that the facilities fail to perform satisfactorily, including the creation of nuisance
conditions, the Permittee shall take immediate corrective action, including those as may be
required by this Division, such as the construction of additional or replacement stormwater
management systems.
6. The permit may be, modified, revoked and reissued or terminated for cause. The filing of a
request for a permit modification, revocation and reissuarice'or=termination does not stay any
permit condition.
7. Permittee grants permission to staff of the DWQ to access the property for the purposes of
inspecting the stormwater facilities during normal business hours.
8. The permittee shall notify the Division of any name, ownership or mailing address changes
within 30 days.
no
State Stormwater Management Systems,
Permit No. SW8 020302
9. A copy of the approved plans and specifications shall be maintained on file by the Permittee
— - for a minimum often years from the date of the completion of construction.
Permit issued this the 28th day of June, 2002.
_..._.-.--_..-_._--.-.-..----NORTH-CAROLINA ENVIRONMENTAL�MANAGEMENT-COMMISSION --
Alan W. Klime,PP.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SWS 020302
7
0
Cow-tney Pines Phase I1
Stormwater Permit No. SW8 020302New Hanover County
Designer's Certification
State Stormwater Management Systems
Permit No. SW8 020302
- - - - - - - Page I of 2
as a duly registered in
the State of North Carolina, having been authorized to observe (periodically/weekly/full time) the
construction of the project,
(Project)
for (Project Owner) hereby state that, to the best of my
abilities, due care and diligence was used in the observation of the project construction such that the
construction was observed to be built within substantial compliance and intent of the approved plans
and specifications.
The checklist of items on page 2 of this form are a part of this Certification.
Noted deviations from approved plans and specifications:
Signature
Registration Number
Date
SEAL
0
State Stormwater Management Systems,
Permit No. SW8 020302
Certification Requirements:. Page 2 of 2
1. The drainage area to the system contains approximately the permitted acreage.
2. The drainage area to the system contains no more than the permitted amount of built-
--upon-area.
3. All the built -upon area associated with the project is graded such that the runoff
drains to the system.
4. The outletJbypass structure elevations are per the approved plan.
5. The outlet structure is located per the approved plans.
6. Trash rack is provided on the outlet/bypass structure.
7. All slopes are grassed with permanent vegetation.
8. Vegetated slopes are no steeper than 3:1.
9. The inlets are located per the approved plans and do not cause short-circuiting of the
System.
l0. The permitted amounts of surface area and/or volume have been provided.
1 l . Required drawdown devices are correctly sized per the approved plans.
12. All required design depths are provided. `
�13. All required parts of the system are provided, such as a vegetated shelf, a forebay,
and the vegetated filter.
14. The overall dimensions of the system, as shown on the approved.plans, are provided.
CC.' NCDENR-DWQ Regional Office
Tony Roberts, New Hanover County Building Inspections
. ....ry :•.`,l.n:,:.v:.�:, ^� :1....v rvtiQ::{ rp :..
Date.Received
Fee Paid
Permit Number
.S , 'L UD i+
L e6 . - /
U D.
I
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
_'___--`—`_'STORMWATER MANAGEMENT PERMIT APPLICATIONTORIVI
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):
Coastal Carolina Developers, Inc.
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
William Grathwol / President
3. Mailing Address for person listed in item 2 above:
P.O. Boa 3403
City: Wilmington State: NC Zip: 28406
Telephone Number: 910-762-8316
4. Project Name (subdivision, facility, or establishment name —should be consistent with project name on
plans, specifications, letters, operation and maintenance agreements, etc.):
Courtnev Pines Phase II
5. Location of Project (street address):
intersection of Maple Ridge and Rabbit Hollow
City: ^ Wilmington County: New Hanover
6. Directions to project (from nearest major intersection):
From the intersection of NCHwv 17 & Gordon Road travel west on Gordon Road to the intersection with .
White Road. Turn right on White Road for approl._ 3.5miles. Site will be just.past Rabbit Hollow an left.
7. Latitude : N 34" 17' 30" Longitude: W 770 49' 15" of project
8. Contact person who can answer questions about the project:
Name: Charles D. Cazier Telephone Number: 910-763-5100
II. PERMIT INFORMATION:
1. Specif}, whether project is (check one): X 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 known)
3. Specify the type of project (check one).
Lo,kv Density X High Density Redevelop General Permit Other
4. Additional Project Requirements (check applicable blanks):
I _ __CAMA Major_ -X--Sedimentatioii/Erosioii-GoiitroI - - --404//401 -Permit -----NPDES Stormwater-
Information on required state permits can be obtained by contacting the Customer Service Center at
1-877-623-6749.
Ill. PROJECT INFORMATION
1. In the space provided below, summarize ho,,N, stonnwater will be treated. Also attach a detailed narrative
(one to two pages) describing stormwater management for the project.
treated in three separate wet detention poonds
2. Stormwater runoff from this project drains to the —Cape Fear River basin.
I Total Project Area: 19.49 acres 4. Project Built Upon Area: 33,75
03 —
5. How many drainage basins does the project have? —3-
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
Smith Creek
Smith Creek
Smith Creek
Smith Creek
Receiving Stream Class
C-SW
C-SW
C-SW
C-SW
Drainage Basin Area
19,49 ac
7.13 ac
6.97 ac
5.38 ac
E-.\'st'nc, Impervious Area
-
Proposed Inipenlous Area
6.58 ac
2.62 ac
2.07 ac
1.88 ac
% Impervious* Area (total)
33,75%
36.75%
29.7%
35.0%
t
On -site Buildings
199,500 sf
94,000 sf
59,500 sf
56,000 sf
On -site Streets
87,013 sf
30,089 sf
30,815 sf
26,073 sf
On -site Parking
On -site Sidewalks
Other on -site
Off -site -
Total:
Z=286,513 sf
E=I 14,089 sf
Y-=90,351 sf
82,073 sf
* 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. How was the off -site impervious area listed above derived?
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 allo,.able.built-upon area for -each lot -must be provided as an - -w
attachment.
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.
2. No more than square feet of any lot shall be covered by structures of impemous materials.
Impervious materials include asphalt, gravel, concrete, brick stone, slate or similar material but do not include wood
decking or the water surface ofswimming 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 mod cation 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 certif}, 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 (910) 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 SWU-108
Neuse River Basin Supplement
Form SWU-109
Innovative Best Management Practice Supplement
Form SWU-101 Version 399 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 Iisted 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.
Applicant's Initials
• Original and one cop)' of the Stormwater Management Permit Application Form try. _
• One copy of the applicable Supplement Form(s) for each BMP G. L_
• Permit application processing fee of $420 (payable to NCDENR) C42t
• Detailed narrative description of stormwater treatment/management
• Two copies of plans and specifications, including: _G.QC
- Development/Project name
- Engineer and firm
- Legend
- North arrow
- Scale
- Revision number and date
- Mean high waterline
- 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): Tripp Engineering. P.C. _
Mailing Address: 419 Chestnut Street
City: Wilmin0on _ State: NC, Zip: 28401
Phone: (910) 763-5100 Fax: (910) 763-5631
VIII. APPLICANT'S CERTIFICATION
I. (print or type name of person listed in General Information, item ?) William Grathwol
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 1 5A
NCAC 214.1000.
Signature: /�//�/ ' - — ��� � Date:
G �
Form SWU-101 Version 3.99 Page 4 of 4
Permit. No. Q Z0 3 0 L
(to be provided by DYi,OJ
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.he phniocopied for use as an original
DWQ Stormwater Management Plan Review:
A complete Stormwater management plan submittal includes a wet detention basin supplement for each basin,
design calculations, plans and specifications showing all basin and outlet structure details, and a signed and
notarized operation and maintenance agreement.
1. PROJECT INFORMATION (please complete the following information):
Project Name: Courtney Pines Phase II
Contact Person: Charles D. Cazier Phone Number: 910 763-5100
For projects with multiple basins, specify which basin this worksheet applies to; 2
elevations
Basin Bottom Elevation 29.5 ft. (floor of the basin)
Permanent Pool Elevation 35.0 ft. (elevation of the orifice)
Temporary Pool Elevation 36.6 ft. (elevation of the discharge structure overflow)
areas
Permanent Pool Surface Area ____8 095_ sq,ft. (water surface area at the orifice elevation)
Drainage Area 7.13 ac. (on -site and off -site drainage to the basin)
Impervious Area 2.62 ac. (on -site and off -.site drainage to the basin)
volumes
Permanent Pool Volume 25,611_ cu.ft. (combined volume of main basin aizd forehciv)
Temporary Pool Volume _14,654_ cu.ft. (volume detained above the permanent pool)
Forebay Volume _ 4,959� cu.ft. (approximately 20% of total volume)
Other parameters
SAIDA' 2.32 (surface area to drainage area ratio, from DWO table)
Diameter of Orifice 1.5 in. (2 to 5 day tempormy pool draw -down required)
Design Rainfall 1.0 in.
Design TSS Remova12 90 % (minimuni 85% required)
Form SWU-102 Rev 3.99 Page 1 of 4
_ -ram
Footnotes:
1. When using the Division SA/DA tables, the correct SA/DA 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.
2. 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 BMP manual provides design tables for both 85% TSS removal and 90% 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.
Applicants Initials
LZY1 a. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet).
qY- b. The forebay volume is approximately equal to 20% of the total basin volume.
C c. The temporary pool controls runoff from the design storm event.
Cam- d. The temporary pool draws down in 2 to 5 days.
WA 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.
g. The basin side slopes above the permanent pool are no steeper than. 3:1.
Clz_ h. A submerged and vegetated perimeter shelf with a slope of 6:1 or less (show detail).
C i. Vegetative cover above the permanent pool elevation is specified.
Cfx_ _^ J. A trash rack or similar device is provided for both the overflow and orifice.
of Lam_ k. A recorded drainage easement is provided for each basin including access to nearest right-
of-way.
C 1. If the basin is used for sediment and erosion control during construction, clean out of the
basin is specified to be performed prior to use as a wet detention basin
66 m. A mechanism is specified which will drain the basin for maintenance or an emergency.
M. 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) ❑ does X does not incorporate a vegetated filter at the outlet.
This system (check one) ❑ does X does not incorporate pretreatment other than a forebay.
Form SWU-102 Rev 3.99 _ Page 2 of 4
A&
Maintenance activities shall be performed as follows-
1. After every significant runoff producing rainfall event and at least monthly:
a. Inspect the wet detention 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 not be handled in a manner that will 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 4.125_ feet in the main pond, the sediment shall be removed.
When the permanent pool depth reads 2.25_ feet in the forebay, the sediment shall be removed.
BASIN DIAGRAM
(fill in the blanks)
Permanent Pool Elevation 35.0
Sediment moval EL 32.75 75 /�
_�32
Sediment Removal Elevation 30.875 75%
Bottom eva4
-------------------------------------------�-_--- -_-_
Bottom Elevation 29.5 25°/
FOREBAY MA[NjPOND
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 possible.
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. 1 agree to notify DWQ of any problems with the system or prior to any
changes to the system or responsible party.
Print name: Mr. William Grathwol
- • Title:, . w- . -w-• --- President, Coastal Carolina Developers., Inc. - - - - — -- �-
Address: 2905 Market St. Wilmington, NC 25403
Phone: 910-762-8316
J
Signature:
Date.
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, `Della C. Baird , a Notary Public for the State of North Carolina , County
of Pender do hereby certify that William Grathwol personally
appeared before me this IS day of _.Tanua ____, 2002___, and acknowledge the due execution of
the forgoing wet detention basin maintenance requirements. Witness my hand and official seal,
\\\``„+►u+arnrrrrr�f�i
�' C. z�''�
N0TAgr. o
�r^2�, AVBL4G �•c�'
6Ol1,;�\\
rrrrrrin++��
SEAL
My commission expires 10-15-06
/� eCFw. C. Bcuwf
Farm SWU-102 Rev 3.99 Page 4 of 4
Permit No.c7 G off,
(to be provided by Dbi"Q)
- _ - _-.---State of.North Carolina._-_.
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
--w_ —WET DETENTION BASIN SUPPLEMENT
Thisform.mav be photocopied for -use as an original
DWO Stormwater Management Plan_ Review:
A complete stormwater management plan submittal includes a wet detention basin supplement for each basin,
design calculations, plans and specifications showing all basin and outlet structure details, and a signed and
notarized operation and maintenance agreement.
I. PROJECT INFORMATION (please complete the following information):
Project Name: Courtnev Pines Phase 11
Contact Person: Charles D. Cazier Phone Number: 910 763-5100
For projects with multiple basins, specify which basin this worksheet applies to: 3
elevations
Basin Bottom Elevation 30.0 ft. (floor of the basin)
Permanent Pool Elevation 35.0 ft. (elevation of the orifice)
Temporary Pool Elevation 36.35_ ft. (elevation of the discharge structure overflow)
areas
Permanent Pool Surface Area ___7.626_ sq.ft. (water surface area at the orifice elevation)
Drainage Area 6.97 ac. (on -site and off site drainage to the basin)
Impervious Area 2.07 ac. (on -site and off -site drainage to the basin)
volumes
Permanent Pool Volume
Temporary Pool Volume
Forebay Volume
Other parameters
SA/DA'
Diameter of Orifice
Design Rainfall
Design TS S Removal2
_22,072cu`.ft. (comhined volume of main basin and forebay)
1,818— cu.ft. (volume detained above the permanent pool)
4,314_ cd.ft. (approximately 20% of total volume)
2.20 (surface area to drainage area ratio from DWO table)
1.5 in. (2 to 5 day temporary pool draw -down required)
1.0 in.
90 % (minimum 85% required)
Form SWU-102 Rev 3.99 Page 1 of 4
Footnotes:
I . When using the Division SA/DA tables, the correct SA/DA 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.
2. 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 BiV1P manual provides design tables for both 85% TSS removal and 90% TSS removal.
U. 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.
Applicants Initials
_lfmf a. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet).
ll:;�L_ b. The forebay volume is approximately equal to 20% of the total basin volume.
c. The temporary pool controls runoff from the design storm event.
Grp d. The temporary pool draws down in 2 to 5 days.
"A 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.
[fir g. The basin side slopes above the permanent pool are no steeper than 3:1.
T�[1 h. A submerged and vegetated perimeter shelf with a slope of 6:1 or less (show detail).
i. Vegetative cover above the permanent pool elevation is specified.
J. A trash rack or similar device is provided for both the overflow and orifice.
/-r3(_ T_ k. A recorded drainage easement is provided for each basin including access to nearest right-
of-way.
Cf7C _T 1. If the basin is used for sediment and erosion control during construction, clean out of the
basin is specified to be performed prior to use as a wet detention basin
Llr _ m. A mechanism is specified which will drain the basin for maintenance or an emergency.
M. 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) ❑ does X does not incorporate a vegetated filter at the outlet.
This system (check one) ❑ does X does not incorporate pretreatment other than a forebay.
Farm SWU-102 Rev 3.99 Page 2 of 4
Maintenance activities shall be performed as follows:
1. After every significant runoff producing rainfall event and at least monthly: _
a. Inspect the wet detention 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 not be handled in a manner that will 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 3.75 _ feet in the main pond, the sediment shall be removed.
When the permanent pool depth reads 2.25� feet in the forebay, the sediment shall be removed.
BASIN DIAGRAM
(fill in the blanks)
Permanent Pool Elevation 35.0
Sediment moval El. 32.75 75 /°
kevation
_____L2T-5%
Sediment Removal Elevation 31.25 ----------------------------------------------42'�'_O!j
Bottom
Bottom Elevation 30.() /
a FOREBAY MAIN POND
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 possible.
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: Mr. William Grathwol
Title: _President, Coastal Carolina Dev6lopers,_Inc: _
Address: 2905 Market St. Wilmington, NC 28403
Phone: 910�-7,62833J 6
Signature: _ �Ul//�' /��: - ��i`�✓`'
Date:�—
Note-, Tile legally responsible party should not be a homeowners association unless more than 50'A of the lots have been sold and
a resident of the subdivision has been named the president. _
I, Della C. Baird _ a Notary Public for the State of North Carolina , County
of Pender , do hereby certify that William Grathwol personally
appeared before me this - - , day of Janua 2002`, and acknowledge the due execution of
the forgoing wet detention basin maintenance requirements. Witness my hand and official seal,
My commission expires
SEAL
l 5-06
Nz- C. 6aak
Form SWU-102 Rev 3.99 Page 4 of 4
Permit No. �J L� Za 30 Z_
(to be provided by DJYQ)
_ State of North Carolina - -- - -- - - - - -
___ Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
DETENTION -BASIN SUPPLEMENT
This form may be photocopied for use as an original
DWQ Stormwater Management Plan Review:
A complete stormwater management plan submittal includes a wet detention basin supplement for each basin,
design calculations, plans and specifications showing all basin and outlet structure details, and a signed and
notarized operation and maintenance agreement.
1. PROJECT INFORMATION (please complete the following information):
Project Name: Courtney Pines Phase I1
Contact Person: Charles D. Cazier Phone Number: 910 763-5 ] 00
For projects with multiple basins, specify which basin this worksheet applies to: 4
elevations
Basin Bottom Elevation 30.5 ft. (floor of the basin)
Permanent Pool Elevation 36.0 ft. (elevation of the orifice)
Temporary Pool Elevation 37.35 ft. (elevation of the discharge structure overflow)
areas
Permanent Pool Surface Area 6,173_ sq.ft. (water surface area at the orifice elevation)
Drainage Area 5.38 ac. (on -site and off -site drainage to the basin)
Impervious Area 3.88 ac. (on -site and of drainage to the basin)
volumes
Permanent Pool Volume 17,773_ cu.ft. (combined volunte of main basin and fore bay) r
Temporary Pool Volume _10,074 cu.ft. (volume detained above the permanent pool) t
Forebay Volume 33 46$_ cu.ft. (app•oximalelY 20910 of total volume)
Other parameters
SA/DA1 2.20 (surface area to drainage area ratio from DWO table)
Diameter of Orifice 1.25 in. (2 to 5 day temporary pool draw -down required)
Design Rainfall 1.0 in.
Design TSS Removal2 90 % (minimum 85% required)
Form SWU-102 Rek, 3.99 Page I of 4
Footnotes:
1. When using the Division SA/DA tables, the correct SA/DA 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.
2. In the 20 coastal counties, the requirement for a vegetative filter may be «•aived if the wet detention basin is designed to provide
901%. TSS removal. The NCDENR BW manual provides design tables for both 85% TSS removal and 90% TSS removal.
_11. __. -_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.
Applicants Initials
L 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 total basin volume.
c. The temporary pool controls runoff from the design storm event.
Cr;�[_ d. The temporary pool draws down in 2 to 5 days,
f 4A. e. If required, a 30-foot vegetative filter is provided at the outlet (include non -erosive flow
(�7C
calculations).
f. The basin length to width ratio is greater than 3:1.
CIS g. The basin side slopes above the permanent pool are no steeper than 3:1.
h. A submerged and vegetated perimeter shelf with a slope of 6:1 or less (show detail).
CIaG i. Vegetative cover above the permanent pool elevation is specified.
C j. A trash rack or similar device is provided for both the overflow and orifice.
C Z 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 to be performed prior to use as a wet detention basin
Cam- in. A mechanism is specified which will drain the basin for maintenance or an emergency.
M. 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) ❑ does X does not incorporate a vegetated filter at the outlet.
This system (check one) ❑ does X does not incorporate pretreatment other than a forebay.
Form SWU-102 Rev 3.99 .Page 2 of 4
Maintenance activities shall be performed as follows:
1. After every significant runoff producing rainfall event and at least monthly:
a. Inspect the wet detention 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.
�. 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 not be handled in a manner that will 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 4.125_ feet in the main pond, the sediment shall be removed.
When the permanent pool depth reads 2.25 feet in the forebay, the sediment shall be removed.
Sediment moval El. 33.75 7
Bottom evation 33.0 4
FOREBAY
BASIN DIAGRAM
(fill in the blanks)
Permanent Pool Elevation 36.0
Sediment Removal Elevation 31.975
-------------------------------------
Bottom Elevation 30.5
MAIN POND
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 possible.
Form SWU-102 Rev 3.99 Page') of 4
7. All components of the wet detention basin system shall be maintained in good working order.
- ----- 1 acknowledgeand 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: Mr. William Grathwol
Title: - - - President, -,.Coastal -Carolina -Developers. -Inc.-
Address: 2905 Market St. Wilmington, NC 29403
Phone- 910-762-9316
Signature:
Date: —L
Note: The legally responsible party should not be a homeoKmers association unless more than 50% of the lots have been sold and
a resident of the subdivision has been named the president.
1, Della C. Baird _ a Notary Public for the State of North Carolina_____, County
of Pender do hereby certify that William Grathwol personally
appeared before me this I - day of _ 3anuary 2_ 002 , and acknowledge the due execution of
the forgoing wet detention basin maintenance requirements. Witness my hand and official seal.,
C.6aDLk
SEAL
My commission expires 10-15-06
Form SWU-102 Rev 3.99 Page 4 of 4
Jan 07 2011 12:19 Wilson %26 Lysiak Inc. 336-275-2636
P.5
Project Name: Cov e �i 6S SUS t?1 V r 31&J
Stormwater Permit o.: QM3030ig
County: Q
Oesig nett Certification
1,4uaP &LEkA4 40mNL[ , as a duly registered !'ESs AL- i,+.466G
in the State of North Carolina. having been authorized to observe (periodicail)weehlyO
-%**r e"he construcliioon of the project,
eoOJ tI X-r i w�-t K,s.L c.00-4 �v i 8 t1 ZQ3oT.
(Prom)
for • ANuoA��y` _ _(Project Owner) hereby state thial., W the
- egqk_kt �best of my abilities, due care and dligence was used in the observation of the project
construction such that the construction was observed to be buRt within substantial
compliance and Intent of the approved plans and specifications.
The checklist of items on page 2 of thts form is included in the Certification.
Noted deviations from approved plans and specification:
t
Signature
Registratic
Date
`► �ti%lll11i���
SEAL r
-b 17374 4 �y
c .•'
GR EGa
llf 1h
Jan 07 2011 12:19 Wilson %26 Lysiak Inc.
Certification Requirements:
,_ i5
336-275-2636
The drainage area to the system contains approximately the permitted
acreage.
The drainage area to the system contains no more than the permitted
amount of built -upon area.
All the built -upon area associated with the project is graded such that the
runoff drains to the system.
All roof drains are located such that the runoff is directed into the system.
The outiet1bypass structure elevations are per the approved plan.
The outlet structure is located per the approved plans.
Trash rack is provided on the outlet/bypass structure.
All slopes are grassed Mth permanent vegetation.
Vegetated slopes are no steeper than 3:1.
The inlets are located per the approved plans and do not cause short-
circuiting of the system,
The permitted amounts of surface area andfor volume have been
provided.
Required drawdown devices are correctly sized per the approved plans.
All required design depths are provided.
All required parts of the system are provided, such as a vegetated shelf,
and a forebay.
The required system dimensions are provided per the approved plans.
p.6
.... County Building InspecttlDn9._.. ..... _._.-. .�._.....,.....�......._......,._,,......_...,_,,�_.....-�.,.....-.,.._
{
r 4
Project Name: CO��1e►J ES 5UP5 PI V I a I O&J
Stormwater Permit)\l o_: S 64,7Q 3 0.?,�_
County: jgAA10V
Designer's Certification
I,fwP &It1�LfL�, as a duly registeredot^ESSJo+A�-
in the State of North Carolina, having been authorized to observe (periodicalf�lf»
the constructPPAE—A'
on of the project,
�Os1 pr�Y KAV4f i c wPA4 S\d 8 O Z030Z
(Protect)
for C.OAxl1�. 190"A (Project Owner) hereby state that, tv the
best of my abilities, due care and diligence was used in the observation of the project
construction such that the construction was observed to be built within substantial
compliance and intent of the approved plans and specifications.
The checklist of items on page 2 of this form is included in the Certification.
Noted deviations from approved plans and specification:
Signature
Registratic
Date '
3NN o I Z01
=O•.•oFESSlpry.•��y�.
SEAL, f =
b{ 17374 =
GREGO
.� sa
i��� jA �NGlNEF-�:••• ����
REC'D JAN 0 7 2011
1
t
- Certification Requirements:
1.
The drainage area to the system contains approximately the permitted
acreage.
_g,Z.
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.
Regional.4ffice........ .......
......_ _ ._._....,. � w _ _.,,�..._...........
County Building Inspections