HomeMy WebLinkAboutSW8091204_Historical File_20091229Aiv,-4irA
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins
Governor
December 29, 2009
Marty K. Lawing, County Manager
Brunswick County
45 Courthouse Drive NE, Building E
Bolivia, NC 28422
Director
Subject: Permit No. SW8 091204
Northwest Water Treatment Plant Improvements
Low Density Stormwater Project
Brunswick County
Dear Mr. Lawing:
Dee Freeman
Secretary
The Wilmington Regional Office received a Stormwater Management Permit Application for
Northwest Water Treatment Plan Improvements on December 28, 2009. Staff review of the plans and
specifications has determined that the project, as proposed, will comply with the Stormwater Regulations
set forth in Session Law 2008-211 and Title 15A NCAC 2H.1000. We are forwarding Permit No. SW8
091204 dated December 29, 2009, for the construction of the subject project.
This permit shall be effective from the date of issuance until rescinded and shall be subject to the
conditions and limitations as specified therein, and does not supercede any other agency permit that may
be required.
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 please contact either M.J. Naugle or me at (910) 796-7215.
Si erel6y,
Georgette rcott
Stormwater Supervisor
Division of Water Quality
GDS/mjn: S:\WQS\STORMWATER\PERMIT\091204 dec09
cc: Matthew Jones, Hazen and Sawyer, 919-833-7152, fax: 919-833-1828
Brunswick County Inspections
Jeff Phillips, Brunswick County Engineering
Wilmington Regional Office
Central Files
M.J. Naugle
Wilmington Regional Office
127 Cardinal Drive Extension, Wilmington, North Carolina 28405 1�TOne
Phone: 910-796-7215 \ FAX: 910-350-2004 \ Customer Service:1-877-623-6748 lv O Carolina
Internet: www.ncwaterquality.org Naturally
An Equal Opportunily \ Aiflrmative Action Employer
State Stormwater Management Systems
Permit No. SW8 091204
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STAVE STORMWATER MANAGEMENT PERMIT
LOW 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
Marty K. Lawing, County Manager and Brunswick County
Northwest Water Treatment Plant Improvements
4091 Butler Road, Leland, Brunswick County
FOR THE
construction, operation and maintenance of a 24% low density development in compliance with
the provisions of Session Law 2008-211 and Title 15A NCAC 2H .1000 (hereafter referred to
singly and collectively 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.
The Permit shall be effective from the date of issuance until rescinded and shall be subject to
the following specific conditions and limitations:
I. DESIGN STANDARDS
1. This permit covers the construction of a total of 55,820 square feet of proposed built -
upon area. There is 147,126 square feet of existing impervious area built prior to 1988.
The total amount of impervious area with this permit ice, v5 square feet.
�.P5 f smc pe 3 A 4o4 4: kc- q �
2. The overall tract built -upon area percentage for the project must be maintained at no
more than 24%, as required by Section .1005 of the stormwater rules.
3. Approved plans, application, supplements and specifications for projects covered by this
permit are incorporated by reference and are enforceable parts of the permit.
4. The only runoff conveyance systems allowed will be vegetated conveyances such as
swales with minimum side slopes of 3:1 (H:V) as defined in the stormwater rules and
approved by the Division.
5. Where the flow rate in a swale exceeds 2 fps, a mechanism to prevent erosion shall be
provided at the end of the swale, prior to discharging into the 50 foot buffer, surface
waters or wetlands.
6. No piping is allowed except that minimum amount necessary to direct runoff beneath an
impervious surface such as a road or to provide access.
7. Projects covered by this permit will maintain a minimum 50-foot-wide vegetative buffer
adjacent surface waters. The width of the buffer is measured horizontally from the
normal pool of impounded structures, from the bank of each side of streams or rivers,
and from the mean high water line of tidal waters, perpendicular to the shoreline.
Page 2 of 5
State Stormwater Management Systems
Permit No. SW8 091204
8. All runoff directed into and through the vegetative buffer must flow through the buffer in a
diffuse manner.
9. All runoff directed into wetlands shall flow into and through the wetlands at a non -erosive
velocity.
10. Roof drains must terminate at least 50 foot from surface waters.
II. SCHEDULE OF COMPLIANCE
The permittee shall not allow any person, including the permittee, to alter any part of the
approved stormwater management system or fill in, alter, or pipe any drainage feature
(such as swales) as shown on the approved plans, except for minimum driveway
crossings, unless and until the permittee shall have submitted a modification to the
permit and received approval from the Division of Water Quality.
2. The permittee is responsible for verifying that the proposed built -upon area does not
exceed the allowable built -upon area.
3. 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.
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 listed below:
a. Any revision to the approved plans, regardless of size.
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area.
e. Further subdivision, acquisition, or sale of the project area, in whole or in part.
The project area is defined as all property owned by the permittee, for which
Sedimentation and Erosion Control Plan approval or a CAMA Major permit was
sought.
f. Filling in, altering or piping any vegetative conveyance shown on the approved
plan, except for minimum driveway crossings.
5. Swales and other vegetated conveyances shall be constructed in their entirety,
vegetated, and operational for their intended use prior to the construction of any built -
upon surface.
6. During construction, erosion shall be kept to a minimum and any eroded areas of the
swales or other vegetated conveyances will be repaired immediately.
7. The permittee shall at all times provide the operation and maintenance necessary to
operate the permitted stormwater management systems at optimum efficiency to
include:
a. Inspections
b Sediment removal.
C. Mowing, and re -vegetating of the side slopes.
d. Immediate repair of eroded areas.
e. Maintenance of side slopes in accordance with approved plans and
specifications.
Page.3 of 5
State Stormwater Management Systems
Permit No. SW8 091204
8. Prior to the sale or subdivision of this project, in whole or in part, the permittee is
required to submit a permit modification.
9. Construction of additional built -upon area in excess of 202,955 square feet will require 'a
permit modification. Construction of additional impervious areas such that low density
requirements are no longer met must be submitted to DWQ and a permit modification
must be issued prior to construction. An engineered system will be required to collect
and treat the runoff from all. built -upon area associated with the project, including that
area permitted under the low density option.
10. Within 30 days of completion of the project, the permittee shall certify in writing that the
project has been constructed in accordance with the approved plans.
11. The permittee shall submit all information requested by the Director or his/her
representative within the time frame specified in the written information request.
III. GENERAL CONDITIONS
1. Failure to abide by the conditions and limitations contained in this permit may subject the
Permittee to an enforcement action by the Division of Water Quality, in accordance with
North Carolina General Statutes 143-215.6A to 143-215.6C.
2. The permit issued shall continue in force and effect until revoked or terminated.
3. The permit may be modified, revoked and reissued or terminated for cause. The filing of
a request for a permit modification, revocation and re -issuance, or termination does not
stay any permit condition.
4. The issuance of this permit does not prohibit the Director from reopening and modifying
the permit, revoking and reissuing the permit, or terminating the permit as allowed by the
laws, rules, and regulations contained in Title 15A of the North Carolina Administrative
Code, Subchapter 2H.1000; and North Carolina General Statute 143-215.1 et. al.
5. Unless specified elsewhere, permanent seeding requirements for the swales must follow
the guidelines established in the latest version of the North Carolina Erosion and
Sediment Control Planning and Design Manual.
6. This permit is not transferable to any person or entity except after notice to and approval
by the Director. The Director may require modification or revocation and re -issuance of
the permit to change the name and incorporate such other requirements as may be
necessary. In the event of a name or ownership change, a completed Name/Ownership
Change form must be submitted to the Division of Water Quality, signed by the parties
involved, and accompanied by appropriate documentation as listed on page 2 of the
form. The approval of this request will be considered on its merits, and jnay or may not
be approved.
7. The permittee is responsible for compliance with all permit conditions until the Director
approves the permit transfer. Neither the sale of the project, in whole or in part, nor the
transfer of common area to a third party, shall be considered an approved permit
transfer request.
8. The permittee grants permission to DENR Staff to enter the property for the purpose of
inspecting all components of the stormwater management facility.
9. The permittee shall notify the Division in writing of any name, ownership or mailing
address changes at least 30 days prior to making such changes.
Page 4 of 5
State Stormwater Management Systems,
Permit No. SW8 091204
10. The issuance of this permit does not preclude the Permittee from complying with and
obtaining any and all permits or approvals as required by any statutes, rules, regulations,
or ordinances, which may be imposed by any other Local, State or Federal government
agency having jurisdiction. Any activities undertaken at this site prior to receipt of the
necessary permits or approvals to do so is considered a violation of NCGS 143-215.1,
and subject to enforcement procedures pursuant to NCGS 143-215.6.
Permit issued this the twenty-ninth day of December 2009.
/NORCAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
------------ s ---------------
for Coleen H. ullinS. Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW8 091204
Page 5 of 5
DWQ USE ONLY
Date Received
Fee Paid
Permit Number
- -D 17
1o0 . '-9'1- G 3G 28
I -5A7 O� o / o
Applicable Rules: ❑ Coastal SW -1995 Coastal SW - 2008 ❑ Ph 11- Post Construc 'on
(select all that apply) ❑ Non -Coastal SW- HQW/ORW Waters ❑ Universal Stormwater Management Plan
❑ Other WQ Mgmt Plan:
State of North Carolina
Department of Environment and Natural ResuumesaaJMW
Division of Water Quality
� 2009
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may be photocopied for use as an original �-
BY�—
I. GENERAL INFORMATION
1. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
Northwest Water Treatment Plant Imvrovements
2. Location of Project (street address):
4091 Butler Road
City:Leland County:Brunswick Zip:28451
3. Directions to project (from nearest major intersection):
From Wilming on, go West on US-74. Exit onto State Road 1426, headed North. Turn left onto State Road
1460.
4. Latitude:340 18' 11.21" N Longitude:78° 6' 21.29" W of the main entrance to the project.
II. PERMIT INFORMATION:
1. a. Specify whether project is (check one): ®New ❑Modification
b.If this application is being submitted as the result of a modification to an existing permit, list the existing
permit number , its issue date (if known) , and the status of
construction: ❑Not Started ❑Partially Completed* ❑ Completed* *provide a designer's certification
2. Specify the type of project (check one):
®Low Density []High Density ❑Drains to an Offsite Stormwater System []Other
3. If this application is being submitted as the result of a previously returned application or a letter from DWQ
requesting a state stormwater management permit application, list the stormwater project number, if
assigned, and the previous name of the project, if different than currently
proposed,
4. a. Additional Project Requirements (check applicable blanks; information on required state permits can be
obtained by contacting the Customer Service Center at 1-877-623-6748):
❑LAMA Major
❑NPDES Industrial Stormwater
®Sedimentation/Erosion Control: 5 ac of Disturbed Area
0404/401 Permit: Proposed Impacts
b.If any of these permits have already been acquired please provide the Project Name, Project/Permit Number,
issue date and the type of each permit:
Form SWU-101 Version 07July2009 Page 1 of 6
III. CONTACT INFORMATION
1. a. Print Applicant / Signing Official's name and title (specifically the developer, property owner, lessee,
designated government official, individual, etc. who owns the project):
Applicant/Organization:Brunswick County
Signing Official & Titie:Marty K. Lawing County Manager
b. Contact information for person listed in item 1a above:
Street Address:Building E, 45 Courthouse Drive NE
City:Bolivia State:NC Zip:28422
Mailing Address (if applicable):Post Office Box 249
City:Bolivia State:NC Zip:28422
Phone: 910 ) 253-2000 Fax: (910 ) 253-2022
Email:admin®brunsco.net
Please check the appropriate box. The applicant listed above is:
® The property owner (Skip to Contact Information, item 3a)
❑ Lessee* (Attach a copy of the lease agreement and complete Contact Information, item 2a and 2b below)
❑ Purchaser* (Attach a copy of the pending sales agreement and complete Contact Information, item 2a and
2b below)
❑ Developer* (Complete Contact Information, item 2a and 2b below.)
2. a. Print Property Owner's name and title below, if you are the lessee, purchaser or developer. (This is the
person who owns the property that the project is located on):
Property Owner/Organization:
Signing Official &
b. Contact information for person listed in item 2a above:
Street Address:
City:
State: Zip:
Mailing Address (if applicable):
City: State: Zip:
Phone: ( ) Fax:
Email:
3. a. (Optional) Print the name and title of another contact such as the project's construction supervisor or other
person who can answer questions about the project
Other Contact Person/Organization:
Signing Official & Title:
b. Contact information for person listed in item 3a above:
Mailing Address:
City: State: Zip:
Phone: ( ) Fax: ( )
Email:
4. Local jurisdiction for building permits: Brunswick County
Point of Contact:Brunswick County Planning Office Phone #: (910 ) 253-2025
Form SWU-101 Version 07July2009 Page 2 of 6
IV. PROJECT INFORMATION
1. In the space provided below, briefly summarize how the stormwater runoff will be treated.
Stormwater runoff from the majority of the new development will be routed through the site utilizing
vegetative conveyance. Much of this runoff will be conveyed to a level spreader before being discharged
from the project area.
2. a. If claiming vested rights, identify the supporting documents provided and the date they were approved:
❑ Approval of a Site Specific Development Plan or PUD Approval Date:
❑ Valid Building Permit Issued Date:
❑ Other: Date:
b.Identify the regulation(s) the project has been designed in accordance with:
❑ Coastal SW -1995 ❑ Ph lI - Post Construction
3. Stormwater runoff from this project drains to the Cape Fear River basin.
4. Total Property Area: 200 acres
5. Total Coastal Wetlands Area: 0 acres
6. Total Surface Water Area:1.9 acres
7. Total Property Area (4) - Total Coastal Wetlands Area (5) - Total Surface Water Area (6) = Total Project
Area+:198.1 acres
+ Total project area shall be calculated to exclude the following: the normal pool of impounded structures, the area
between the banks of streams and rivers, the area below the Normal High Water (NHM line or Mean High Water
(MHK) line, and coastal wetlands landward from the NHW (or MHM line. The resultant project area is used to
calculate overall percent built upon area (BUA). Non -coastal wetlands landward of the I�THW (or MHi� line may
be included in the total project area.
8. Project percent of impervious area: (Total Impervious Area / Total Project Area) X 100 = 2.4 %
9. How many drainage areas does the project have?1 (For high density, count 1 for each proposed engineered
stormwater BMP. For low density and other projects, use 1 for the whole property area)
10. Complete the following information for each drainage area identified in Project Information item 9. If there
are more than four drainage areas in the project, attach an additional sheet with the information for each area
provided in the same format as below.
Basler Informa&m
Dramage Area 1
Dramage Area
Dranuge Area
Dramm a Area
Receiving Stream Name
Hood Creek
Stream Class *
C; SW
Stream Index Number *
18-66
Total Drainage Area (sf)
8,712,000
ZOVaL
On -site Drainage Area (sf)
8,712,000
Off -site Drainage Area (sf)
0
Proposed Impervious Areas
55,829
% Impervious Area** total
2.4%
Impervious' Surface Area
Drainage Area 1
DramaArea
Dratnage Area
Draina a Area
On -site Buildings/Lots (so
53,896
On -site Streets (sf)
693
On -site Parking (sf)
643
On -site Sidewalks (sf)
597
a ; •.
£
Other on -site (sf)
g �e�
AA
i '
Future (sf)
Off -site (so _
Existing BUA*** (sf)
147,126
Total (so:
p
* Stream Class and Index Number can be determined at: http:/%h2o.enr.state.nc.us)Ums/reports ortsWB.html
Form SWU-101 Version 07Ju1}2009 Page 3 of 6
Imperoious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
*** Report only that amount of existing B UA that will remain after development. Do not report any existing B UA that
is to be removed and which will be replaced by new B UA.
11. How was the off -site impervious area listed above determined? Provide documentation. N/A
Projects in Union County: Contact DWQ Central Office staff to check if the proiect is located within a Threatened &
Endangered Species watershed that may be subject to more stringent stormwater requirements as per NCAC 02B .0600.
V. SUPPLEMENT AND O&M FORMS
The applicable state stormwater management permit supplement and operation and maintenance (O&M) forms
must be submitted for each BMP specified for this project. The latest versions of the forms can be downloaded
from hU://h2o.enr.state.nc.us/su/bmp forms.htm.
VI. SUBMITTAL REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ).
A complete package includes all of the items listed below. A detailed application instruction sheet and BMP
checklists are available from hft://h2o.enr.state.nc.us/su/bmp forms.htm. The complete application
package should be submitted to the appropriate DWQ Office. (The appropriate office may be found by locating
project on the interactive online map at htlp://h2o.enr.state.nc.us/su/msi maps.htm.)
Please indicate that the following required information have been provided by initialing in the space provided for
each item. All original documents MUST be signed and initialed in blue ink. Download the latest versions for
each submitted application package from hft://h2o.enr.state.nc.us/su/bmp
lnifiqls
1. Original and one copy of the Stormwater Management Permit Application Form.
2. Original and one copy of the signed and notarized Deed Restrictions & Protective Covenants
Form. (if required as per Part VII below)
3. Original of the applicable Supplement Form(s) (sealed, signed and dated) and O&M
agreement(s) for each BMP.
4. Permit application processing fee of $505 payable to NCDENR. (For an Express review, refer to
htW-Llwww.envhelp.org/]Rages/onestopexpress.hbnl for information on the Express program. !/
and the associated fees. Contact the appropriate regional office Express Permit Coordinator for
additional information and to schedule the required application meeting.)
5. A detailed narrative (one to two pages) describing the stormwater treatment/managementfor
the project. This is required in addition to the brief summary provided in the Project
Information, item 1.
6. A USGS map identifying the site location. If the receiving stream is reported as class SA or the
receiving stream drains to class SA waters within ih mile of the site boundary, include the Y2
mile radius on the map.
7. Sealed, signed and dated calculations.
8. Two sets of plans folded to 8.5" x 14" (sealed, signed, & dated), including:
a. Development/Project name.
b. Engineer and firm.
c. Location map with named streets and NCSR numbers.
d. Legend.
e. North arrow.
f. Scale.
g. Revision number and dates.
h. Identify all surface waters on the plans by delineating the normal pool elevation of
impounded structures, the banks of streams and rivers, the MHW or NHW line of tidal
waters, and any coastal wetlands landward of the MHW or NHW lines.
• Delineate the vegetated buffer landward from the normal pool elevation of impounded
structures, the banks of streams or rivers, and the MHW (or NHW) of tidal waters.
i. Dimensioned property/project boundary with bearings & distances.
j. Site Layout with all BUA identified and dimensioned.
k. Existing contours, proposed contours, spot elevations, finished floor elevations.
1. Details of roads, drainage features, collection systems, and stormwater control measures.
Form SWU-101 Version 07July2009 Page 4 of 6
m. Wetlands delineated, or a note on the plans that none exist. (Must be delineated by a
qualified person. Provide documentation of qualifications and identify the person who
made the determination on the plans.
n. Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations.
o. Drainage areas delineated (included in the main set of plans, not as a separate document).
p. Vegetated buffers (where required).
9. Copy of any applicable soils report with the associated SHWT elevations (Please identify
elevations in addition to depths) as well as a map of the boring locations with the existing
elevations and boring logs. Include an 8.5"xl l" copy of. the MRCS County Soils map with the
project area clearly delineated. For projects with infiltration BMPs, the report should also
include the soil type, expected infiltration rate, and the method of determining the infiltration rate.
(Infiltration Devices submitted to WiRO: Schedule a site visit for DWQ to verify the SHWT prior
to submittal, (910) 796-7378.)
10. A copy of the most current property deed. Deed book: 0489 Page No: 0729 77 I�
11. For corporations and limited liability corporations (LLC): Provide documentation from the NC _I_
Secretary of State or other official documentation, which supports the titles and positions held
by the persons listed in Contact Information, item la, 2a, and/or 3a per NCAC 2H.1003(e). The
corporation or LLC must be listed as an active corporation in good standing with the NC
Secretary of State, otherwise the application will be returned.
hft://www.secretaxy.state.nc.us/CorRorations/CSearch.aspx
VII. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
For all subdivisions, outparcels, and future development, the appropriate property restrictions and protective
covenants are required to be recorded prior to the sale of any lot. If lot sizes vary significantly or the proposed
BUA allocations vary, a table listing each lot number, lot size, and the allowable built -upon area must be provided
as an attachment to the completed and notarized deed restriction form. The appropriate deed restrictions and
protective covenants forms can be downloaded from
http://h2o.enr.state.nc.us/su/bmp forms.htm#deed restrictions. Download the latest versions for each submittal.
In the instances where the applicant is different than the property owner, it is the responsibility of the property
owner to sign the deed restrictions and protective covenants form while the applicant is responsible for ensuring
that the deed restrictions are recorded.
By the notarized signature(s) below, the permit holder(s) certify that the recorded property restrictions and
protective covenants for this project, if required, shall include all the items required in the permit and listed
on the forms available on the website, that the covenants will be binding on all parties and persons claiming
under them, that they will run with the land, that the required covenants cannot be changed or deleted
without concurrence from the NC DWQ and that they will be recorded prior to the sale of any lot.
VIII. CONSULTANT INFORMATION AND AUTHORIZATION
Applicant: Complete this section if you wish to designate authority to another individual and/or firm (such as a
consulting engineer and/or firm) so that they may provide information on your behalf for this project (such as
addressing requests for additional information).
Consulting Engineer:Matthew Tones
Consulting Firm: Hazen and Sawyer
Mailing Address.4011 WestChase Blvd., Suite 500
City:Raleigh State:NC Zip:27607
Phone: (919 ) 833-7152 Fax: (919 ) 833-1828
Email:mjones®hazenandsawyer.com
DG PROPERTY OWNER AUTHORIZATION (if Contact Information, item 2 has been felled out, complete this
section)
I, (print or type name of person listed in Contact Information, item 2a) , certify that I
own the property identified in this permit application, and thus give permission to (print or type name of person
listed in Contact Information, item 1a) with (print or type name of organization listed in
Contact Information, item 1 b) to develop the project as currently proposed. A copy of
the lease agreement or pending property sales contract has been provided with the submittal, which indicates the
party responsible for the operation and maintenance of the stormwater system.
Form SWU-101 Version 07Jul 2009 Page 5 of 6
As the legal property owner I acknowledge, understand, and agree by my signature below, that if my designated
agent (entity listed in Contact Information, item 1) dissolves their company and/or cancels or defaults on their
lease agreement, or pending sale, responsibility for compliance with the DWQ Stormwater permit reverts back to
me, the property owner. As the property owner, it is my responsibility to notify DWQ immediately and submit a
completed Name/Ownership Change Form within 30 days; otherwise I will be operating a stormwater treatment
facility without a valid permit. I understand that the operation of a stormwater treatment facility without a valid
permit is a violation of NC General Statue 143-215.1 and may result in appropriate enforcement action including
the assessment of civil penalties of up to $25,000 per day, pursuant to NCGS 143-215.6.
Signature: Date:
a Notary Public for the State of . County of
do hereby certify that personally appeared
before me this _ day of . and acknowledge the due execution of the application for
a stormwater permit. Witness my hand and official seal,
)Mew—'1M T>
SEAL
DEC 2 s 2009
My commission expires
X. APPLICANT'S CERTIFICATION
I, (print or type name of person listed in Contact Information, item 2) Marty K. Lawing
certify that the information included on this permit application form is, to the best of my knowledge, correct and
that the project will be constructed in conformance with the approved plans, that the required deed restrictions
and protective covenants will be recorded, and that the proposed project complies with the requirements of the
applicable stormwate_ les urjder 15A NCAC 2H .1000, SL 2006-246 (Ph. II - Post Construction) or SL 2008-211.
Date: f 0z -I 0
I, �+ Pl dreat -r . W V-1 i }f— �a Notary Public for the State of _N(Or 4 n C-LL rn k nci , County of
2)r k&hs k i ck do hereby certify that M a r fF K . L-o vv � vc a personally appeared
before me this 18 day of T)e1�e
ca n1�r , a o and /acknowledge the due execution of the application for
a stormwater permit. Witness my hand and official seal, (-(7LNl��C_, 4 L(i`W�11
N•��H��IIhIIr��
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SEAL
My commission expires 0+1911 a0 13
Form SWU-101 Version Muly2009 Page 6 of 6
State Stormwater Management Systems
Permit No. SW8 091204
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
LOW 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
Marty K. Lawing, County Manager and Brunswick County
Northwest Water Treatment Plant Improvements
4091 Butler Road, Leland, Brunswick County
FOR THE
construction, operation and maintenance of a 24% low density development in compliance with
the provisions of Session Law 2008-211 and Title 15A NCAC 2H .1000 (hereafter referred to
singly and collectively 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.
The Permit shall be effective from the date of issuance until rescinded and shall be subject to
the following specific conditions and limitations:
I. DESIGN STANDARDS
This permit covers the construction of a total of 55,829 square feet of proposed built -
upon area. There is 147,126 square feet of existing impervious area built prior to 1988.
The total amount of impervious area with this permit is 202,955 square feet.
2. The overall tract built -upon area percentage for the project must be maintained at no
more than 24%, as required by Section .1005 of the stormwater rules.
3. Approved plans, application, supplements and specifications for projects covered by this
permit are incorporated by reference and are enforceable parts of the permit.
4. The only runoff conveyance systems allowed will be vegetated conveyances such as
swales with minimum side slopes of 3:1 (H:1) as defined in the stormwater rules and
approved by the Division.
5. Where the flow rate in a swale exceeds 2 fps, a mechanism to prevent erosion shall be
provided at the end of the swaie, prior to discharging into the 50 foot buffer, surface
waters or wetlands.
6. No piping is allowed except that minimum amount necessary to direct runoff beneath an
impervious surface such as a road or to provide access.
7. Projects covered by this permit will maintain a minimum 50-foot-wide vegetative buffer
adjacent surface waters. The width of the buffer is measured horizontally from the
normal pool of impounded structures, from the bank of each side of streams or rivers,
and from the mean high water line of tidal waters, perpendicular to the shoreline.
Page 2 of 5
State Stormwater Management Systems
Permit No. SW8 091204
8. All runoff directed into and through the vegetative buffer must flow through the buffer in a
diffuse manner.
9. All runoff directed into wetlands shall flow into and through the wetlands at a non -erosive
velocity.
10. Roof drains must terminate at least 50 foot from surface waters.
II. SCHEDULE OF COMPLIANCE
The permittee shall not allow any person, including the permittee, to alter any part of the
approved stormwater management system or fill in, alter, or pipe any drainage feature
(such as swales) as shown on the approved plans, except for minimum driveway
crossings, unless and until the permittee shall have submitted a modification to the
permit and received approval from the Division of Water Quality.
2. The permittee is responsible for verifying that the proposed built -upon area does not
exceed the allowable built -upon area.
3. 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.
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 listed below:
a. Any revision to the approved plans, regardless of size.
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area.
e. Further subdivision, acquisition, or sale of the project area, in whole or in part.
The project area is defined as all property owned by the permittee, for which
Sedimentation and Erosion Control Plan approval or a CAMA Major permit was
sought.
f. Filling in, altering or piping any vegetative conveyance shown on the approved
plan, except for minimum driveway crossings.
5. Swales and other vegetated conveyances shall be constructed in their entirety,
vegetated, and operational for their intended use prior to the construction of any built -
upon surface.
6. During construction, erosion shall be kept to a minimum and any eroded areas of the
swales or other vegetated conveyances will be repaired immediately.
7. The permittee shall at all times provide the operation and maintenance necessary to
operate the permitted stormwater management systems at optimum efficiency to
include:
a. Inspections
b Sediment removal.
C. Mowing, and re -vegetating of the side slopes.
d. Immediate repair of eroded areas.
e. Maintenance of side slopes in accordance with approved plans and
specifications.
Page 3 of 5
State Stormwater Management Systems
Permit No. SW8 091204
8. Prior to the sale or subdivision of this project, in whole or in part, the permittee is
required to submit a permit modification.
9. Construction of additional built -upon area in excess of 202,955 square feet will require a
permit modification. Construction of additional impervious areas such that low density
requirements are no longer met must be submitted to DWG? and a permit modification
must be issued prior to construction. An engineered system will be required to collect
and treat the runoff from all built -upon area associated with the project, including that
area permitted under the low density option.
10. Within 30 days of completion of the project, the permittee shall certify in writing that the
project has been constructed in accordance with the approved plans.
11. The permittee shall submit all information requested by the Director or his/her
representative within the time frame specified in the written information request_
III. GENERAL CONDITIONS
Failure to abide by the conditions and limitations contained in this permit may subject the
Permittee to an e^forcement action by the Division of Water Quality, in accordance with
North Carolina General Statutes 143-215.6A to 143-215.6C.
2. The permit issued shall continue in force and effect until revoked or terminated.
3. The permit may be modified, revoked and reissued or terminated for cause. The filing of
a request for a permit modification, revocation and re -issuance, or termination does not
stay any permit condition.
4. The issuance of this permit does not prohibit the Director from reopening and modifying
the permit, revoking and reissuing the permit, or terminating the permit as allowed by the
laws, rules, and regulations contained in Title 15A of the North Carolina Administrative
Code, Subchapter 2H.1000; and North Carolina General Statute 143-215.1 et. al.
5. Unless specified elsewhere, permanent seeding requirements for the swales must follow
the guidelines established in the latest version of the North Carolina Erosion and
Sediment Control Planning and Design Manual.
6. This permit is not transferable to any person or entity except after notice to and approval
by the Director. The Director may require modification or revocation and re -issuance of
the permit to change the name and incorporate such other requirements as may be
necessary. In the event of a name or ownership change, a completed Name/Ownership
Change form must be submitted to the Division of Water Quality, signed by the parties
involved, and accompanied by appropriate documentation as listed on page 2 of the
form. The approval of this request will be considered on its merits, and may or may not
be approved.
7. The permittee is responsible for compliance with all permit conditions until the Director
approves the permit transfer. Neither the sale of the project, in whole or in part, nor the
transfer of common area to a third party, shall be considered an approved permit
transfer request.
8. The permittee grants permission to DENR Staff to enter the property for the purpose of
inspecting all components of the stormwater management facility.
9. The permittee shall notify the Division in writing of any name, ownership or mailing
address changes at least 30 days prior to making such changes.
Page 4of5
State Stormwater Management Systems
Permit No. SW8 091204
10. The issuance of this permit does not preclude the Permittee from complying with and
obtaining any and all permits or approvals as required by any statutes, rules, regulations,
or ordinances, which may be imposed by any other Local, State or Federal government
agency having jurisdiction. Any activities undertaken at this site prior to receipt of the
necessary permits or approvals to do so is considered a violation of NCGS 143-215.1,
and subject to enforcement procedures pursuant to NCGS 143-215.6.
Permit issued this the twenty-ninth day of December 2009.
JNORTROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
_g------------
for Sulli s, Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW8 091204
Page 5of5
IIWA!Ua,�MVER
Environmental Engineers & Scientists
Public Water System Project
Engineer Certification Form
By the signature below I certify:
Engineer Signature:
Hazen and Sawyer, P.C.
4944 Parkway Plaza Blvd,
Sub 375
Charlotte, NC 28217
704-357-3150
Fax:704-357-3152
The referenced public water system project was completed in substantial
compliance with the approved engineering plans and specifications,
including any provisions stipulated in the Department's plan approval
letter or authorization to construct letter, and revised only in accordance
with the provisions of Rule .0306.
This is a
X Full certification
Partial certification
This certification is based upon inspections conducted daily by the
Owner's field representative and periodically by engineers employed by
Hazen and Sawyer, who are under my responsible charge.
Seal here:
Project Name: Northwest WTP Improvements
— Brunswick County
Serial No: 1 o-00107
�N CAROL
SEAL '
16797
Engineer Name(Print): Jay Jackson
Date: C? ^
Water System Name: Brunswick County Water System
Mail completed form to: Public Water Supply Section 1634 Mail Service Center Raleigh, NC 27699-1634
Cc: Mr. John Nichols, PE, Mr. Glenn Walker, Mr. George Brandon, Brunswick C-,�I�
Ms. Diane Williams, NC Public Water Supply Section
oc� 7011
BY:
Johnson, Kelly
From: Johnson, Kelly
Sent: Tuesday, October 11, 2011 9:07 AM
To: 'jjackson@hazenandsawyer.com'
Subiect: Northwest WTP, SW8 091204
Jay,
Please submit the Plan Revision form, htto://aortal.ncdenr.org/web/wa/ws/su/statesw/forms docs.
Thanks,
Kelly
*** My email has changed to kellv.n.iohnsonOncdenr.eov
K.GLL0hKS0Yt,
Kelly Johnson
Environmental Engineer
Division of Water Quality
Stormwater Permitting
127 Cardinal Drive Extension
Wilmington, NC 28405-384S
Office: 910.796.7331
Fax: 910.350.2004
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be
disclosed to third parties.
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Resources
Beverly Eaves Perdue
Governor
MARTY LAWING
P O BOX 249
BOLIVIA, NC 28422
Dear Sir/Madam:
Thomas A. Reeder
Director
09/ 16/2011
Dee Freeman
Secretary
Re: Final Approval
Final Approval Date: 09/16/2011
NORTHWEST WTP IMPROVEMENTS - BRUNSWICK COUNTY
Serial No.: 10-00107
Water System No.: NC0410045
BRUNSWICK COUNTY
The Department received an engineer's certification statement and an applicant's certification statement concerning the above
referenced project. The engineer's certification verifies that the construction of the referenced project has been completed in
accordance with the engineering plans and specifications approved under Department Serial Number 10-00107. The applicant's
certification verifies that an Operation and Maintenance Plan and Emergency Management Plan have been completed and are
accessible to the operator on duty at all times and available to the Department upon request and that the system will have a
certified operator as required by 15A NCAC 18C .1300.
Me Department has determined that the requirements specified in 15A NCAC 18C .0303(a) and (c) have been met and,
therefore, issues this Final Approval in accordance with Rule .0309(a).
If Public Water Supply can be of further service, please call (919) 733-2321.
cc: Debra Benoy, P.E., REGIONAL ENGINEER
BRUNSWICK COUNTY HEALTH DEPARTMENT
HAZEN AND SAWYER, PC - CHARLOTTE
Public Water Supply Section - Jessica C. Godreau, Chief
1634 Mail Service Center, Raleigh, North Carolina 27699-1634
Phone: 919-733-2321 \ FAX: 919-715-4374 \ Lab Form FAX: 919-715-6637 \ Internet:
An Equal Opportunity \ Affirmative Action Employer
Sincerely,
J. Wayne Munden, P.E., Head
Technical Services Branch
Public Water Supply Section
C�IVET-1%
Nil
BY:
ECG Carolina
ou 0 7 20#1 a, �(ral`y
i
BY:
State of North Carolina
Department of Envirc mment and Natural Reso=es
Wilmington Regional Office
Deverly Faves Perdue, Governor bee Freeman, Secretary
FAX COVER SHEET
Date: 14LL, No. Of Pages: (excluding cover)T., YrATtRFJ From;
�
CO: CO: NC RENR
FAX #: — S 1= — 9 ?S' FAX#: 910-350-2004
REMARKS: _ ;�2 LO
127 Cardinal Drive Eximlon, Wilmington, N.C. 29406-3W TeIcPhono (910) 796.7215 Faz (910) 350-2004
An Equal Opportunity AM -attire Action Employer
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STATE OF NORTH CAROLINA BOOK 489 M,. 729
COUNTY OF BRUNSWICK
THIS WARRANTY DEED, blade and entered into this the 31st
day of December, 1981, by and between ADDIE W. BUTLER (Widow) of
Brunswic ounty, North Carolina, hereinafter referred to as the
party the first paR�p r RUNSWICK COUNTY, a body politic and
su �ision oA' he State ofro)Wzhereinafter referred
as the party((v��second part; D
W 1%NESSET11
THAT for and in consideration of the sum of FIVE HUNDRED
THOUSAND ($500,000) DOLLARS and other valuable considerations, in
hand paid by the said party of the second part, the receipt of
which is hereby acknowledged, the said party of the first part,
O
Grantor, s bargained and sold, and by these presents does hereby
give,.4'ant, bargain, convey unto the party of the second
D
pa"o Grantee`' R fee simple, E'ER, to the terms and
'ditions hereina l�set forth, all that certain tract or parcel
of land located in Northwest Township, Brunswick County, North
Carolina, and more particularly described as follows;
0.1 cj
m
o
�h
1
3
O
$O1�Zi°xN Carolina
a
BEGINNING at an iron pipe in the eastern
right-of-way line of a proposed entrance road
to the property, said iron pipe and place and
Irnint of Beginning being from the intersection
of the center lines of -SR 1426 and SR 1.160.
S 20 degrees 45 minutes 07 seconds W. along
the centerline of SR 1460 1198.94' to a pipe in
the cen line of SR 1960; Thence, perpendicular
to
Lhe of SR 1460, easterly 30' to
�a pipe in ight-of,-way line of SR
(60; Thencminutes 12 seconds
Q74-;7J R- 492. long the eastern
rig ay line of the proposed entrance road
to anpipe in the eastern right-of-w•ay line
of the proposed entrance road; Thence, continuing
with the eastern right-of-way line of the proposed
entrance road S 29 degrees 23 minutes 30 seconds E
465.05' to the Place and Point of Beginning; Thence
from the Beginning Point, R=1427.11' S 10 degrees 05
minutes E C11. 943.75' to an iron pipe; Thence S
9 degrees 19 minutes 30 seconds W 2978.08, to
an iron pipe in the centerline of the North Carolina
Natural Gas Pipeling Easement; Thence s 73 degrees
07 minutes 47 seconds W 1103.02' to a new iron rod
in the northern right-of-way line of the railroad
right-o Thence with the northern right-of-way
line of ad N 64 degrees 42 minutes 17
econds W 1 �'�� Dint in the intersection
�l ^� srara orb MA
ReOl Estate
jQRT
G = .u,.�.., %-,4nn nQl±
,_s
V
aoosc 48��•= 738
of the northern right-of-way line of the railroad
right-of-way and the centerline of the run of
Hoods Creek as plotted from the Brunswick County
Tax Department's Tax Map; Thence, with the centerline
of the run of Hoods Creek northerly, as plotted from
the DrZhe'
ck County Tax Department's Tax Map, more
than 3to a point in the intersection of the
centerf the run of floods Creek and the boundary
lin Butler prAK: with the Hoffman property;
The with the Hoif o the
the centerline
of run o .,foods Creek �f�'gayg 49 minutes
5 econds E w iron ro offman
e; Thence, c with the Hoifm�'line
89 degrees 49A�Pipc�
53 seconds E 310.23' to
an existing irothe Hoffman line; Thence,
leaving the Hoffman line S 18 degrees 55 minutes
15 seconds E 95, to an iron rod; Thence S 36 degrees
10 minutes 15 seconds E 135' to an iron rod; Thence
8 5 degrees 10 minutes 15 seconds E 463' to an iron
rod; Thence 8 75 degrees 55 minutes 15 seconds E 165'
to an iron rod; Thence S 4 degrees 56 minutes 30
seconds E 256.57' to an existing iron pipe; Thence
N 86 degrees 02 minutes E 1016.12' to a Bolt; Thence
N O5 deg- 30 minutes 33 seconds W 213.85' to a
new iron pe and 15 inch Gum; Thence S 59 degrees 46
minute 801.41' to a new iron rod in the center of
a Iig 'ood stump• T 9 degrees 40 minutes
49 s ads W 684.15' //T�QQ��,,��rod: Thence N 80
de s 19 m es 11 secon �Sp/7J� to an iron rod;
i" ce N 7 deg 26 minutes E Iff�1 an iron rod;
nce N 11 degr W inutes E 114.10' o an iron
rod; Thence N 29 de 23 minutes 30 seconds W
44.93' to an iron rod; hence S 82 degrees 34 minutes
E 74.96' to the Place and Point of SEGIMING.
And containing 200 acres more or less all according
to a survey by G. Douglas Jefferys, RLS dated May &
June, 1981, Updated December, 1981.
This conveyance is made SUBJECT to the following
terms and conditions:
1. The Gtor, party of the first part, reserves
unto h, her succd�sors, heirs and assigns, the
right use, with th its successors and
assi that certain ma d proposed to
be structe��• the Grantee tern boundary
o s property eby conveyed, for s and egress
and from the pr ty conveyed and the property
of the Grantor locat �n the eastern boundary of the
described property in t is conveyance.
2, The Grantor, party of the first part, reserves
unto herself, her successors, heirs and assigns, the
right to enter upon the described property for a
period until and through December. 1983, but no longer,
in order to take and remove all the merchantible timber
located on the property described, SO LONG AS, the
said act iv of the Grantor, her agents, successors,
heirs and iSns, in cutting and removing the said
timber not interfere with, hinder or delay the
constr oa and opera of the water treatment
plants d its appurten a constructed and
oe�r� on th�;pr�tY con
N U'
��
a4 D
�' D
�O
BooK 489 P.m- '%.:1
3. The Grantor, party of the first part, reserves
unto herself, her successors, heirs and assigns, the
right of ingress and egress to and from the NCNG gas
pipeline and the railroad located on the property
conveyed, large enough for the movement of tractor-
trailer rigs anu other heavy equipment at such place
QO on the property as may be mutually agreed to by the
parties hereto.
4. Th party of tbc- first part, reserves
unto horse es_ors, hairs and assigns, and
(orzeeifically do the ASCA tobacco acreage
oundage allotment nod to this property to
tee.
TO HAVE AND TO HOLD the aforesaid tract or parcel of
land to its own use and behoof, and that of its successors and
assigns, forever, SUBJECT HOWEVER, only to the foregoing terms and
conditions ol .this conveyance. in fee simple.
Q 2ND the Grantor, party of the first part, covenants
with Aegrantee, par/¢,,/, off the second part, that the Grantor is
se d of the remisels Fla Z�f has the right to convey the
(#e in fee sim that title isle and free and clear of
all encumbrances, anf.hat Grantor will warrant and defend the title
against the lawful claims of all persons whomsoever.
IN WITNESS WHEREOF. the Grantor has hereunto set he:
hand and seal, this, the day and year first above written.
�O
(Seal "Iff1e)
' D
'1
�A. 111\VQfQpx1-§--Y
STATE OF NORTH CAROLINA son x 4 f;t;; a
COUNTY OF BRUNSWICK
I. YPA! ,a 7 S4aas a Notary Public
do hereby certify that ADDIE F. BUTLER personally appeared before
me this dale and acknoml.lged the due execution of the foregoing
instrument for the pures therein set forth.
WITNESS,, CCIand and Notar this
/�the
� +day
of c lJ" a 1 �gi1 �t51)
1
Not y Pub
(SEAL)
My commission expires: �O
My CM-M- itm &;1-re, Roy. 14. 19 s�
STATE OF NORTH CAROLINA. erunswiek
The Foregoing Certifiate(s) of Kati
nnnrlpr,
y• Opp _
. v
.��•,'. Sys.
� '••.,��r coup+
CkXare) certified to be correct.
Recorded chi. 5th day of �S 0
I9 $Zat O R�D1. fd
Rouen J. Ro9msan
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I,
Action Id. SAW-2009-01615
U.S. ARMY CORPS OF ENGINEERS
WILMINGTON DISTRICT
County: Brunswick U.S.G.S. Quad: Leland
NOTIFICATION OF JURISDICTIONAL DETERMINATION
Property Owner: Brunswick_ County
c/o Glenn Walker
Address: 4091 Butler Road
Leland, NC 28451
Agent: Harvey E. Clifton, Jr.
Coastal Environmental Consultins, Inc.
Address: P.O. Box 15102
Wilmington, NC 28408
Telephone No.: (9101791-6411
Property description:
Size (acres) --1 acre Nearest Town Leland
Nearest Waterway UT to Hood Creek River Basin Cape Fear
USGS HUC 03030005 Coordinates N 34.309939 W-78.107153
Location description The project area site is located in wetlands adjacent to an unnamed tributary to Hood Creek at
4091 Butler Road Leland, Brunswick County, North Carolina. Parcel ID N:01500080.
Indicate Which of the Following Auply:
A. Preliminary Determination
_ Based on preliminary information, there may be wetlands on the above described property. We strongly suggest you have
this property inspected to determine the extent of Department of the Army (DA) jurisdiction. To be considered final, a
jurisdictional determination must be verified by the Corps. This preliminary determination is not an appealable action
under the Regulatory Program Administrative Appeal Process ( Reference 33 CFR Part 331).
B. Approved Determination
There are Navigable Waters of the United States within the above described property subject to the permit requirements of
Section 10 of the Rivers and Harbors Act and Section 404 of the Clean Water Act. Unless there is a change in the law or
our published regulations, this determination may be relied upon for a period not to exceed five years from the date of this
notification.
X There are waters of the U.S. including wetlands on the above described project area subject to the permit requirements of
Section 404 of the Clean Water Act (CWA)(33 USC § 1344). Unless there is a change in the law or our published
regulations, this determination may be relied upon for a period not to exceed five years from the date of this notification.
We strongl y suggest you have the waters of the U.S. including wetlands on your property delineated. Due to the size of
your property and/or our present workload, the Corps may not be able to accomplish this wetland delineation in a timely
manner. For a more timely delineation, you may wish to obtain a consultant. To be considered final, any delineation must
be verified by the Corps.
_ The waters of the U.S. including wetland on your project area have been delineated and the delineation has been
verified by the Corps. We strongly suggest you have this delineation surveyed. Upon completion, this survey should be
reviewed and verified by the Corps. Once verified, this survey will provide an accurate depiction of all areas subject to
CWA jurisdiction on your property which, provided there is no change in the law or our published regulations, may be
relied upon for a period not to exceed five years.
X The waters of the U.S. including wetlands have been delineated and surveyed and are accurately depicted on the plat
signed by the Corps Regulatory Official identified below on October 27, 2009. Unless there is a change in the law or our
published regulations, this determination may be relied upon for a period not to exceed five years from the date of this
notification.
Page 1 of 2
l .
r J w -'-
,Action ID: SAW-2009-01615
There are no waters of the U.S., to include wetlands, present on the above described property which are subject to the
permit requirements of Section 404 of the Clean Water Act (33 USC 1344). Unless there is a change in the law or our
published regulations, this determination may be relied upon for a period not to exceed five years from the date of this
notification.
X The property is located in one of the 20 Coastal Counties subject to regulation under the Coastal Area Management Act
(CAMA). You should contact the Division of Coastal "Management in Wilmington, NC at (910) 796-7215 to determine
their requirements.
Placement of dredged or fill material within waters of the US and/or wetlands without a Department of the Army permit may
constitute a violation of Section 301 of the Clean Water Act (33 USC § 1311). If you have any questions regarding this
determination and/or the Corps regulatory program, please contact Teresa Russell at 910-251-4725
C. Basis For Determination
The site exhibits wetland criteria as defined in the 1987 Corps Wetland Delineation Manual and is adjacent to an
unnamed tributary to Hood Creek. a Section 10 Navigable Water of the U.S. This determination is based on
information submitted by Gene Clifton of Coastal Environmental Consulting. Inc. and a site visit by Teresa Russell of
the U.S. Armv Corers of Engineers on September 2.2009.
D. Remarks
E. Attention USDA Program Participants
This delineation/determination has been conducted to identify the limits of Corps' Clean Water Act jurisdiction for the
particular site identified in this request. The delineation/determination may not be valid for the wetland conservation
provisions of the Food Security Act of 1985. If you or your tenant are USDA Program participants, or anticipate participation
in USDA programs, you should request a certified wetland determination from the local office of the Natural Resources
Conservation Service, prior to starting work.
F. Appeals Information (This information applies only to approved jurisdictional determinations as indicated in
B. above)
This correspondence constitutes an approved jurisdictional determination for the above described site. If you object to this
determination, you may request an administrative appeal under Corps regulations at 33 CFR part 331. Enclosed you will find a
Notification of Appeal Process (NAP) fact sheet and request for appeal (RFA) form. If you request to appeal this
determination you must submit a completed RFA form to the following address:
District Engineer, Wilmington Regulatory Division
Attn: Teresa E. Russell
Wilmington Regulatory Field Office
69 Darlington Ave
Wilmington, North Carolina 28403
In order for an RFA to be accepted by the Corps, the Corps must determine that it is complete, that it meets the criteria for
appeal under 33 CFR part 331.5, and that it has been received by the District Office within 60 days of the date of the NAP.
Should you decide to submit an RFA form, it must be received at the above address by December 26, 2009.
**It is not necessary to submit an RFA form to the District Office if you do not object to the determination in this
correspondence.** — I ; N „ n
Corps Regulatory Offici
Date October 27, 2009
Expiration Date October 27, 2014
The Wilmington District is committed to providing the highest level of'support to the public. To help us ensure we continue to do so, please
complete the Customer Satisfaction Sti vey located at our website at hg /Jregulatory. usacesurvev. com! to complete the survey online.
Copy furnished:
- Chad Coburn, NCDENR-DWQ, 127 Cardinal Drive, Wilmington, NC 28405
-Miles McCall c/o Withers & Ravenel, 1410 Commonwealth Dr., Unit 101, Wilmington NC, 28403
-Jay Jackson c% Hazen & Sawyer, P.C., 4944 Parkway Plaza Blvd. Suite 375, Charlotte, NC 28217
STORMWATER SUBMITTAL REQUIREMENTS
LOW DENSITY ,= ;
Subdivisions, Curb Outlet System, Non -subdivision
Objectives
i
{
A. Limit amount of built -upon surfaces per the most current rul
B. No collection systems (limited piping -only enough to ge under a road)no inverted crown
streets)
C. ,/Sheet flow
D. / No area of the project of such high density that runoff threatens water quality. (i.e., pocket of
high density).
II. What makes up a complete low -density application package?
A. ,/Two sets of layout & grading plans with road details and a swale drainage area map for curb
outlet systems. Unrelated plan sheets such as water/sewer profiles or details are not
B. �ecessary. (Additional sets of plans may be requested for projects in certain counties)
ompleted application with supplement(s), SWU-101, SW401-Low Density, SW401-Curb
Outlet, SW401-Grassed Swale.
C,---Deed restrictions, if applicable.
D--,--,Curb outlet swale calculations if applicable.
E.--- Chlorides test results must be provided if the project is within'/ mile of SR waters (Phase 11).
(This is only required to test out of SR water treatment requirements)
III. BIMS entry (for DWQ use only)
Enter & track submittal dates, add info requested/received dates, permit issue dates, and drainage
area info. Best done after the add info letter is written and before sending permit up for signature.
IV. Shell documents (for DWQ use only)
Permit shells: s:\wqs\stormwater\shellsllowother (for non -subdivisions)
s:\wgs\stormwater\shells\lowsub (for subdivisions with no C&G)
s:\wqs\stormwater\shells\lowsubcg (for subdivisions w/C&G)
Calculations: s:\wgMstormwater\excel spreadsheets\curb&gutter
V. Review Procedure- look for consistency between the various elements of the package- application,
plan and calculations.
A. APPLIOATION
1. ✓Original signature required. Photocopied signatures cannot be accepted.
2. , Wan agent signs the application, a signed letter of authorization from the applicant must
be provided which includes the name, title, mailing address and phone number of the
p6 son signing the letter.
3. Correct supplemenis are provided - iow density andfor curb outlet supplement and
grassed swale supplement (no low density supplement needed for projects that do not
propose to subdivide and sell lots.)
4. � uilt-upon areas must be reported in square feet in Section 111.6 of the application.
6--Within Phase II counties, BUA limits are 12% within'/ mile and draining to SR waters,
and 24% for all others.
6. deceiving stream name and classification. This is important because of the various
density nsity limits.
7. LAection 111.6 is filled in -cannot be left blank. For low density, only one column is filled in
unless either a pocket of high density is formed, or the project drains to different
classifications of water bodies, which result in different BUA limits.
8.✓ If the applicant is a corporation, partnership or LLC, look it up on the Secretary of State
Corporations Database. Make sure corporation is spelled correctly (capitalization and
punctuation matter) and that the person signing the application is at least a vice-
president in the corporation, a General Partner in the partnership, a member in a
member -managed LLC, or the manager of a manager -managed LLC. Need
documentation to support if the Articles of Incorporation do not list the members or
managers of the LLC. if an agent signs, then a letter of authorization is needed from the
president, vice president, general partner, member or manager.
-9—For subdivided projects, a signed and notarized deed restriction statement must be
provided.
B. CALCULATIONS
t. ----Found at the top of page 2 of the low density supplement. Follow the formula to get
the allowable BUA per lot. For non -subdivision projects, a supplement form is not
required and the calculations in Section 111.6 of the application will suffice. For
subdivision projects with varying lot sizes and BUA's per lot, the calculation would
only be done to the point that the total BUA available for the lots is determined. Do
not divide by the number of lots.
If wetlands are present, the applicant must calculate the site area to be used in the
BUA per lot0�c.0 lation by following the calculation methods outlined in the wetlands
policy. vl (-,o .^ L-
8------ For curb outlet systems, swale velocity calculations are required, to include the
individual swale drainage area, the built -upon area within each drainage area, and
the Rational C-value calculated for each DA.
f a pocket of high density is formed, the application must include an engineered
control suitable for the classification of the receiving waters.
tRA
C. PLANS- Plan sheets should be kept to a minimum. In general, depending on the size of the
project, the plan set should consist of 1-4 sheets with the following information provided:
A . DevelopmentlProject Name
„2. Engineer name and firm.
�' • ^ `3� Legend containing all of the symbols used on the plans.
r/k!' North Arrow G
�k
%„5.— Location Map with nearest intersection of two major roads shown. ajor road is any 1,
2, or 3 digit NC, US or interstate highway. /-Jr Z fit .
4..
\-S.—~Scale- standard engineering scale, no off-the-wall stuff. �✓
-- Date ✓� f'J°
d $..._.._..-Revision number and date, if applicable.. a------� --
V Original contours, proposed contours,;'spot elevations 'ffnished floor elevations,pipe
° \ inverts, swale inverts,( etc. . _ �___ _. _ ....:......._ .._.�
r' 10 �) Existing drainage (piping, swales, ditches, ponds, etc.), including off -site. Include a map
`---,-J delineating the offsite drainage areas.
11✓ Property/Project boundary lines, bearing & distances.
42-� Mean High Water Line, or Normal High Water line if applicable.
13. Drainage easement location and width. Lommao Wlt , 411
Vr Wetlands, whether they are disturbed or not, are delineated, or provide a note on the
plans that none exist. Provide a copy of the wetlands delineation map signed by the
Corps of Engineers, or include a copy of the unsigned delineation map that was
submitted to the Corps.
15,/Details forthe roads, parking area, cul-de-sac radii, sidewalk widths, curb and gutter, all
dimensions & slopes. Note if dimensions arefa of ua to race of curb (FC-FC) or
back of curb to back of curb (BC -BC). - %ja IVIEW
I.6-- Apartment / Condo development- Provide_a typical,building footprint with dimensions
and note all concrete and wood deck areas.
`4�be drainage area for each curb outlet swale is clearly delineated and numbered to
match up to the calculations and supplement. Only swales that actually receive road
runoff have to be curb outlet swales with 5:1 side slopes. Delineation is best done as a
separate plan sheet.
`curb outlet swale detail noting the 5:1 or flatter side slopes, the 100' minimum length
and the type of grass to be planted on the side slopes.
6'Ip A level spreader is provided at the end of all swales that will drain into wetlands or
surface waters. Level spreader O & M is provided.
.For those low density projects within '/ mile of and draining to SA or SR waters,
additional BMP's are required to be shown on the stormwater plans such that no
discharge from the site occurs. This is done on behalf of the Division of Marine
Fisheries.
-'nor Phase II low density projects draining to SR waters make sure that the project
complies with the following:
a. No new points of stormwater discharge. Diffuse flow of stormwater at a non -
erosive velocity to a vegetated buffer capable of providing effective infiltration of
the runoff from the 1 year 24 hour storm shall not be considered a direct
discharge.
b. No increase in the volume of stormwater flow or the capacity of an existing
stormwater conveyance system that drains to SR waters.
c. Modifications to existing stormwater conveyance systems within the contributing
drainage basin do not increase the net amount or rate of stormwater discharge
through existing outfalls to SR waters.
01 FeC4 D&D
Wig' /•� ��` i9A.D.%
For DENR Use ONLY
�� North Carolina Department of Environment and Reviewer �l ►13'
ii1_ Natural Resources Submi 12 - 0 —SCOPE
NCDENR Request for Express Permit Review Time: 10 : e0-
Confirm: _ 1 2 — 8
FILL-IN all the information below and CHECK the Permit(s) you are requesting for express review. FAX or Eman me completed form to express
Coordinator along with a completed DETAILED narrative, site plan (PDF file) and vicinity man (same items expected in the application package
of the project location. Please Include this form in the application package. ., `
iE '"`r �4c- 1l0 Or l�
• Asheville Region Alison Davidson 828-296-4698,g ison.davidson®Acmail net �:�W 4 � ad
• Fayetteville or Raleigh Region -David Lee 919-791-4203, david/eeOn mai/.net 1 ; A � �� — 12
Mooresville & -Patrick Grogan 704-663-3772 or Patrick orooan0nigmail net
Washington Region -Lyn Hardison 252-946.9215 or lyn-hardison9kntvmall net
Wilmington Region -Janet Russell 910-350-2004 orlanet russefflAcmail net C s r1 a •!"
NOTE: Projed application received after 12 noon will be stamped in the following work "�,�
Project Name: NORTHWEST WATER TREATMENT PLANT IMPROVEMENTS County: BRUNSWICK
Applicant: JOHN NICHOLS Company: BRUNSWICK COUNTY
Address: BUILDING G. 20 REFERENDUM DRIVE, NE City: BOLIVIA. State: NC Zip: 28422- G
Phone: 910-253-2657 Fax::910-253-4304 Email: 'nii cholsCc�brunsco.net `s '
Physical Location:4091 BUTLER ROAD, LELAND, NC 28451
Project Drains into HOOD CREEK waters —Water classification C, SW (for classification see-hitp://h2o.enr.state.nc.uAims/reoorts/reoortsWB.html)
Project Located in CAPE FEAR River Basin. Is project draining to class ORW waters? N , within % mile and draining to class SA waters N or within 1 mile
and draining to class HQW waters? N "V' :� ' , .i Y E
Engineer/Consultant: MATTHEW JONES Company: HAZEN AND SAWYER
Address: 4011 WESTCHASE BLVD, SUITE 500 City: RALEIGH, State: NC Zip 27607-_ 1 '
Phone: 919-833-7152 Fax::919-833-1828 Email: miones@llazenandsaw-ver.com DEC 0 8 2009
SECTION ONE: REQUESTING A SCOPING MEETING ONLY
ElScoping Meeting ONLY ❑ DWQ, ❑ DCM, ElDLR, ElOTHER:
PROJ # OWQ
SECTION TWO: CHECK ONLY THE PROGRAM (S) YOU ARE REQUESTING FOR EXPRESS PERMITTING
❑ 401 Unit ❑ Stream Origin Determination: _ # of stream calls — Please attach TOPO map marking the areas in questions
❑ Intermittent/Perennial Determination: _ # of stream calls — Please attach TOPO map marking the areas in questions
❑ 401 Water Quality Certification ❑ Isolated Wetland (_linear ft or _acres)
❑ Riparian Buffer Authorization ❑ Minor Variance ❑ Major General Variance
® State Stormwater ❑ General ❑ SFR, ❑Bkhd & Bt Rmp, ❑ Clear & Grub, ❑ Utility
® Low Density ❑ Low Density -Curb & Gutter _ # Curb Outlet Swales ❑ Off -site [SW (Provide permit #)]
❑ High Density -Detention Pond _ # Treatment Systems ❑ High Density -Infiltration _ #Treatment Systems
❑ High Density-Bio-Retention _ # Treatment Systems ❑ High Density—Stormwater Wetlands # Treatment Systems[] High Density -
Other _# Treatment Systems /❑ MODIFICATION: ❑ Major ❑ Minor ❑ Revision SW (Provide permit #)
❑ Coastal Management ❑ Excavation & Fill ❑ Bridges & Culverts
❑ Upland Development ❑ Marina Development
❑ Structures Information
❑ Urban Waterfront
® Land Quality ® Erosion and Sedimentation Control Plan with 5 acres to be disturbed.(CK # (for DENR use))
SECTION THREE — PLEASE CHECK ALL THAT IS APPLICABLE TO YOUR PROJECT (for both scoping and express meeting request)
Wetlands an Site ® Yes ❑ No
Wetlands Delineation has been completed: ® Yes ❑ No
US ACOE Approval of Delineation completed: ® Yes ❑ No
Received from US ACOE ® Yes ❑ No
Fee Split for multioleDermlts: (Check#
Buffer Impacts: ® No ❑ YES: acre(s)
Isolated wetland on Property ❑ Yes ® No
404 Application in Process w/ US ACOE: ❑ Yes ® No Permit
For DENR use only
Total Fee Amount S
SUBMITTAL DATES
Fee
I SUBMITTAL DATES
Fee
CAMA
$
1
Variance ( Maj; Min)
1
$
SW (❑ HD, ❑ LD, Gen)
1
$
401:
$
LQS
$
Stream Deter,_
$
rd 4,0
'T—�Norblet o n 12- c9
NCDENR EXPRESS September 2008
!!*-4V
.$_I_ 16.4* 46
10.
RAZEN AND SAWYER
Environmental Engineers & Scientists
December 8, 2009
Ms. Janet Russell
North Carolina Department of
Environment and Natural Resources
Express Permitting
Wilmington Regional Office
127 Cardinal Drive Extension
Raleigh, NC 27609
Hazen and Sawyer, P.C.
4011 WestChase Blvd.
Suite 500
Raleigh, NC 27607
(919) 833-7152
(919) 833-1828 (Fax)
Re: Brunswick County, North Carolina
Northwest Water Treatment Plant
Improvements
Request for Express Permit Review
H&S Job No.: 30994
Dear Ms. Russell:
Please find enclosed the Request for Express Permit Review. Also enclosed is a
stormwater narrative, vicinity map, and overall site plan. We are requesting express
permit reviews for state stormwater management, utilizing the low density development
option, and an erosion and sedimentation control plan. Depending upon your
availability, a representative from Brunswick County and I would like to schedule a
meeting to discuss the permit review and submit the permit applications on December
16t" or 17t". If you are not available on either of those dates, please let me know so that
we can make alternative arrangements.
Thank you for your time and consideration. Please call me if you have any questions or
require any additional information.
Sincerely,
HAZEN AND SA R, P.C.
Matthew P. Jones, El
Assistant Engineer
919-833-7152
Now York, NY - Philadelphia, PA - Raleigh, NC - Charlotte, NC - Greensboro, NC - Chadeston, SC - Atlanta, GA - Fairfax, VA - Hampton Roads, VA - Baltimore, MD - Cincinnati, OH - Hollywood, R. - Boca Raton, FL- Miami, FL
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Overview
The Brunswick County Public Utilities Department has proposed to expand the Northwest
Water Treatment Plant in order to better provide potable water to the residents of Brunswick
County. The improvements to the facility will involve construction of a 51,100 ft2
ground level potable water storage tank), a clearwell a
storage building, 1,340 1,000 ft2 metering vault, a 1,800 ft2 chemical
ft2 of asphalt pavement, and 490 ft2 of sidewalk. Underground piping
l
and utilities will also be installed as part of the plant improvement in order to integrate the _ -
facllltles with the existing treatment plant infrastructure. g e new r, 1)
Site Description r
The Northwest Water Treatment Plant parcel is 200 acres and is located within Brunswick ��•�. �. �}�a
County, NC. The site can be accessed from Butler Road, south of Mt Misery Road. The parcel is � predominantly forested, with grassed areas surrounding the existing buildings. The site ,ter
currently contains 3.4 acres of impervious surface, including buildings, closed storage tanks'
parking, and roadways. Additionally, open tanks occupy 1.86 acres of the site and do not
generate any runoff. Stormwater is conveyed through the site via a storm sewer system and
vegetated conveyance. The original treatment plant was constructed in 1983 and consequently
was not subject to stormwater treatment regulations.
Water Resources
The project site is located within the Cape Fear River Basin. Hood Creek serves as the western
boundary of the parcel and receives runoff from the entire site. Additionally, there is an.
unnamed tributary to Hood Creek located near the northern boundary of the parcel. All runoff
ultimately leaves the site via Hood Creek near the northwestern corner of the parcel. A
wetland is located near the northeastern boundary of the site. This wetland was delineated.by
Harvey Clifton of Coastal Environmental Consulting, Inc. as a 404 jurisdictional wetland and,subsequently confirmed by Teresa E. Russell, the Corps Regulatory Official. The construction
limits for this project are located entirely outside the wetland boundary.
Although surface water associated with Hood Creek and the unnamed tributary are contained
within the Northwest Water Treatment Plant parcel, the stream boundaries were not
delineated for the purpose of defining the total project area, since they are located a
substantial distance away from the construction area and are not expected to have a
substantial impact on the impervious percentage of the project. Similarly, stormwater
calculations were confined to the parcel boundaries. Off -site drainage consists of the entire
watershed for Hood Creek. All drainage that flows through the currently proposed
development area is contained within the parcel boundary.
Existing Stormwater Conveyance and Treatment
Runoff from all parking and roadway surfaces is collected by catch basins and conveyed by a
storm sewer system. The storm sewer discharges onto a rip rap apron and is subsequently
conveyed via overland flow to Hood Creek. Runoff from the area north of the main parking and
driveway area is conveyed primarily by overland flow and vegetative channels.
Proposed Stormwater Conveyance and Treatment
Because the site is characterized as low -density development, based upon the impervious
percentage of the parcel, and localized areas of high density do not directly discharge to surface
waters, no structural stormwater BMPs are being proposed for this site. Following
development, the site will consist of 2.4% impervious surfaces. Runoff will be conveyed as
vegetated surface flow through much of the site, maximizing opportunities for infiltration and
minimizing runoff volumes.
/_LD \�
Runoff from the proposed 1,800 ft2 chemical storage building and associated driveway and
sidewalk will be collected by the existing storm sewer system. Hydraulic calculations indicate
that the storm sewer system is adequately sized to convey increased flow from these areas and
their incorporation is not expected to result in the degradation of existing stormwater
treatment. Runoff from the proposed 51,100 ft2 clearwell and 1,000 ft2 metering vault will be
conveyed via overland sheet flow and vegetative stormwater conveyance channels. In order to
maintain non -erosive flows into the wetland, a velocity dissipation structure will be installed
east of the proposed clearwell. This structure will receive runoff from the majority of the
proposed clearwell and will diffuse stormwater flows over a wide area, thereby reducing the
flow velocity. Anticipated 10-yr flow velocities into the wetland are less than 2 ft/s. Temporary
measures shall be implemented during construction to limit erosion and control sediment in
accordance with the North Carolina Erosion and Sediment Control Planning and Design Manual.
Conclusions
The proposed design is for the incorporation of 1.28 acres of impervious area for the Northwest
Water Treatment Plant improvement project. The site is characterized as a low -density
development due to the low percentage of impervious area and lack of direct stormwater
discharge into surface waters. Vegetative conveyance has been incorporated to the maximum
extent practical and a velocity dissipation structure is proposed to minimize the velocity of
water flowing into the wetland. Based on these characteristics, the proposed development is
expected to satisfy all NCDENR DWQ stormwater requirements.
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Stormwater Management
Permit Application
Brunswick County, NC
Northwest Water Treatment Plant
Leland, NC
Prepared for:
DEC 2 8 2�09
gY:
!„Wij 1a0�'
NC Department of Environment and Natural Resources
Division of Water Quality
December 2009
Prepared by:
Hazen and Sawyer, PC
Raleigh, NC
Attention: Mary Jean Naugle
DEC 2 3 2009
iJflM L'll\L SOM
Environmental Engineers do Scientists
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Table of Contents
NCDENR DWQ Stormwater Management Permit Application Form .................................... i
Tableof Contents...................................................................................................................1
StormwaterNarrative............................................................................................................2
Stormwater Overview Figure.................................................................................................3
USGSSite Map.......................................................................................................................4
NRCSSoil Map........................................................................................................................5
Parcel Drainage Description...................................................................................................6
ParcelRunoff Hydrographs....................................................................................................7
Storm Sewer Hydraulic Calculations......................................................................................8
PrecipitationIDF Data............................................................................................................9
Channel Design Calculations..................................................................................................10
Velocity Dissipation Structure Calculations...........................................................................11
LevelSpreader Supplement...................................................................................................12
LowDensity O&M Agreement...............................................................................................13
PropertyDeed........................................................................................................................14
WetlandDelineation..............................................................................................................15
DesignDrawings.....................................................................................................................16
}
DEC 2 8 2009
BY;
Overview
The Brunswick County Public Utilities Department has proposed improvements to the
Northwest Water Treatment Plant in order to better provide potable water to the residents of
Brunswick County. Stimulus funds are involved in the construction of this project. The
improvements to the facility will involve construction of a 51,100 ft2 clearwell (a ground level
potable water storage tank), a 1,000 ft2 metering vault, a 1,800 ft2 chemical storage building,
1,340 ft2 of asphalt pavement, and 600 ft2 of sidewalk (Figure 1). Underground piping and
utilities will also be installed as part of the plant improvement in order to integrate the new
facilities with the existing treatment plant infrastructure.
Site Description
The Northwest Water Treatment Plant parcel is 200 acres and is located within Brunswick
County, NC. The site can be accessed from Butler Road, south of Mt Misery Road. The parcel is
predominantly forested, with grassed areas surrounding the existing buildings. The site
currently contains 3.4 acres of impervious surface, including buildings, closed storage tanks,
parking, and roadways. Additionally, open tanks occupy 1.86 acres of the site and do not
generate any runoff. Stormwater is conveyed through the site via a storm sewer system and
vegetated conveyance. The original treatment plant was constructed in 1983 and consequently
was not subject to stormwater treatment regulations.
Water Resources
The project site is located within the Cape Fear River Basin. Hood Creek serves as the western
boundary of the parcel and receives runoff from the entire site. Additionally, there is an
unnamed tributary to Hood Creek located near the northern boundary of the parcel. All runoff
ultimately leaves the site via Hood Creek near the northwestern corner of the parcel. A
wetland is located near the northeastern boundary of the site. This wetland was delineated by
Harvey Clifton of Coastal Environmental Consulting, Inc. as a 404 jurisdictional wetland and
subsequently confirmed by Teresa E. Russell, the Corps Regulatory Official. The construction
limits for this project are located entirely outside the wetland boundary.
Although surface water associated with Hood Creek and the unnamed tributary are contained
within the Northwest Water Treatment Plant parcel, the stream boundaries were not
delineated for the purpose of defining the total project area, since they are located a
substantial distance away from the construction area and are not expected to have a
substantial impact on the impervious percentage of the project. Similarly, stormwater
calculations were confined to the parcel boundaries. Off -site drainage consists of the entire
watershed for Hood Creek. All drainage that flows through the currently proposed
development area is contained within the parcel boundary.
Existing Stormwater Conveyance and Treatment
Runoff from all parking and roadway surfaces is collected by catch basins and conveyed by a
storm sewer system. The storm sewer discharges onto a rip rap apron and is subsequently
conveyed via overland flow to Hood Creek. Runoff from the area north of the main parking and
driveway area is conveyed primarily by overland flow and vegetative channels.
Proposed Stormwater Conveyance and Treatment
Because the site is characterized as low -density development, based upon the impervious
percentage of the parcel, and localized areas of high density do not directly discharge to surface
waters, no structural stormwater BMPs are being proposed for this site. Following
development, the site will consist of 2.4% impervious surfaces. Runoff will be conveyed as
vegetated surface flow through much of the site, maximizing opportunities for infiltration and
minimizing runoff volumes.
Runoff from the proposed 1,800 ft2 chemical storage building and associated driveway and
sidewalk will be collected by the existing storm sewer system (Figure 1). Due to the
configuration of the existing site and associated constraints, there is no room available for
stormwater treatment or vegetated conveyance measures for runoff from these surfaces.
Hydraulic calculations indicate that the storm sewer system is adequately sized to convey
increased flow from these areas and their incorporation is not expected to result in the
degradation of existing stormwater treatment.��
Runoff from the proposed 51,100 ftZ clearwell and 1,000 ftZ metering vault will be conveyed via
overland sheet flow and vegetative stormwater conveyance channels. Due to existing slopes
and ground cover conditions surrounding the proposed clearwell, allowing runoff from the
entire clearwell to freely drain as sheet flow is expected to result in the formation of
channelized flow on steep slopes and cause erosion. To address this issue, vegetated channels
have been incorporated to convey the runoff from much of the clearwell as overland flow in a
controlled manner to a level spreader. In order to maintain non -erosive flows into the wetland,
a level spreader will be installed east of the proposed clearwell (Figure 1; C12). This structure
will receive runoff from the majority of the proposed clearwell and will diffuse stormwater
flows over a wide area, thereby reducing the flow velocity. Details of this structure are shown
on drawing C12. The design of the proposed level spreader differs somewhat from the typical
state design guidance, which is oriented towards use of level spreaders in conjunction with
riparian buffers or filter strips for water quality treatment. In those situations, the objective is
to maximize the surface area of the riparian buffer or filter strip that is in contact with
stormwater, in order to encourage infiltration and remove pollutants. In the proposed level
spreader for this project, the function of the level spreader is to discharge non -erosive flows
into the wetland. Calculations for the 10-year storm based on weir flow and channel hydraulic
methodologies indicate flow velocities into the wetland will be less than 2 ft/s.
In addition to stormwater conveyance measures, temporary measures shall be implemented
during construction to limit erosion and control sediment in accordance with the North Carolina
Erosion and Sediment Control Planning and Design Manual.
M
Conclusions
The proposed design is for the incorporation of an additional 1.28 acres of impervious area for
the Northwest Water Treatment Plant improvement project. The site is characterized as a low -
density development due to the low percentage of impervious area and lack of direct
stormwater discharge into surface waters. Vegetative conveyance has been incorporated to
the maximum extent practical and a velocity dissipation structure is proposed to minimize the
velocity of water flowing into the wetland. Based on these characteristics, the proposed
development is expected to satisfy all NCDENR DWQ requirements.
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Soil Map —Brunswick County, North Carolina
m
34' 19 39' p
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o Map Scale: 1.7,750 W printed on Aslze {8.5" x 11'j sheet
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Feet
0 250 500 1,000 1,500
USDA Natural Resources Web Soil Survey
Conservation Service National Cooperative Soil Survey
tl�
�i 34° 18' 38"
to
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10/29/2009
Page 1 of 3
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Soil Map —Brunswick County, North Carolina
Map Unit Legend
Brunswick County, North Carolina (NC019)
Map Unit Symbol
Map Unit Name
Acres in AOI
Percent of AOI
BaB
Baymeade fine sand, 1 to 6 percent
slopes
142.7
43.9%
BDC
Baymeade and Manryn soiis, 6 to 12
percent slopes
48.2
14.8%
BnB
Blanton fine sand, 0 to 5 percent slopes
73.2
22.5%
KrB
Kureb fine sand, 1 to 8 percent slopes
1.7
0.5%
Lo
Leon fine sand
8.0
2.4%
Mk
Muckalee loam
51.3
15.8%
Totals for Area of Interest
326.2
100.0%
U_ SDA Natural Resources Web Soil Survey 10129/2009
� Conservation Service National Cooperative Soil Survey Page 3 of 3
Parcel Drainage Description
Project Name: Northwest Water Treatment Plant Improvements
Project Number: 30094-005
Description: Existing and proposed surface cover for parcel
Date:12/4/09
Designed by: MPJ
Checked by: EHK
Area Summary
acres ftZ
Total Parcel Area
New impervious28
E200
Existing Impervious
3.38
Total Impervious
4.66
Open Tanks
1.86
• Impervious
3.3%
% Impervious
2.4%
Pre-Dev Forested
179.25
Post-Dev Forested
177.70
New Impervious
Buildings
ftZ
Clearwell No. 1
51071
Chemical and Meter Vault
1025
Chemical Storage Building 2
1800
Sidewalk
ftZ
Chemical Storage Sidewalk
597
Roadway
ftz
Chemical Storage Driveway
693
Chemical Storage Parking
643
Existing Impervious
Buildings
ftZ
Clearwell No. 2
31468
Control Bldg and Chemical Rooms
8557
Chemical Storage Building 1
2009
Closed Tank
348
Closed Tank
213
Polymer Building
465
Maintenance Building
1547
Cell Phone Tower
147
Sludge Pumps
393
Sludge Loading Areal
1628
Recycle Pumpsl
260
Pavement
ftZ
Driveways and Parking
97683
Gravel Parking
787
Gravel Container Storage
405
Sidewalk
1216
Open Tanks/Pits
ftZ
Clarifiers
24352
Chemical Spill Holding Lagoon
4744
Sludge Equalization Basin
32501
Western Sludge Drying Bed
6751
Eastern Sludge Drying Bed
6620
Sludge Thickener
6071
8712000
55829
147126
202955
81039
* Includes open tanks
* Excludes open tanks
Hydrograph Report 1
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2008 by Autodesk, Inc. v6.051
Hyd. No. 1
Parcel Drainage Pre -Development
Hydrograph type
=.. SCS Runoff
Storm frequency
= 1 yrs
Time interval
= 2 mM'
Drainage area
= 198.140 ac
Basin Slope
= 0.5 %
Tc method
= KIRPICH
Total precip.
= 3.63 in
Storm duration
= 24 hrs
* Composite (Area/CN) = [(179.250 x 25) + (15.510 x 39) + (3.380 x 98)] / 198.140
Q (cfs)
0.10
0.09
0.08
Mob
0.05
0.04
0.03
0.02
0.01
0.00
0
Tuesday, Dec 8, 2009
Peak discharge = 0.000 cfs
Time to peak
= n/a
Hyd. volume
= 0 cuft
Curve number
= 27*
Hydraulic length
= 5000 ft
Time of conc. (Tc)
= 42.29 min
Distribution
= Type III
Shape factor
= 484
Parcel drainage Pre -Development
Hyd. No. 1 --1 Year
20 40 60 80 100
Hyd No. 1
Q (cfs)
0.10
0.09
XOD]
0.07
0.06
0.05
0.04
0.03
0.02
0.01
0.00
120
Time (min)
�Hydtograph Report 2
Hydraflow Hydrographs Extension for AutoCAD® Civil 3139 2008 by Autodesk, Inc. v6.051
Hyd. No. 1
Parcel Drainage Pre -Development
Hydrograph type
= SCS Runoff
Storm frequency
= 10 yrs
Time interval
= 2 min
Drainage area
= 198.140 ac
Basin Slope
= 0.5 %
Tc method
= KIRPICH
Total precip.
= 6.83 in
Storm duration
= 24 hrs
* Composite (Area/CN) = [(179.250 x 25) + (15.510 x 39) + (3.380 x 98)] / 198.140
1.00
M
Tuesday, Dec 8, 2009
Peak discharge = 1.693 cfs
Time to peak
= 966 min
Hyd. volume
= 51,638 cuft
Curve number
= 27*
Hydraulic length
= 5000 ft
Time of conc. (Tc)
= 42.29 min
Distribution
= Type III
Shape factor
= 484
Parcel Drainage Pre -Development
Hyd. No. 1 -- 10 Year
120 240 360 480 600 720 840 960
Hyd No. 1
Q (cfs)
2.00
1.00
0.00
1080 1200 1320 1440 1560
Time (min)
Hydrograph Report 1
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2008 by Autodesk, Inc. v6.051
Hyd. No. 2
Parcel Drainage Post -Development
Hydrograph type
= SCS Runoff
Storm frequency
= 1 yrs
Time interval
= 2 min
Drainage area
= 198.140 ac
Basin Slope
= 0.5 %
Tc method
= KIRPICH
Total precip.
= 3.63 in
Storm duration
= 24 hrs
Composite (Area/CN) = [(177.700 x 25) + (15.780 x 39) + (4.660 x 98)] / 198.140
Q (cfs)
0.10
0.09
0.08
0.07
0.06
0.05
0.04
0.03
0.02
Tuesday, Dec 8, 2009
Peak discharge = 0.000 cfs
Time to peak
= n/a
Hyd. volume
= 0 cuft
Curve number
= 28*
Hydraulic length
= 5000 ft
Time of conc. (Tc)
= 42.29 min
Distribution
= Type III
Shape factor
= 484
Parcel Drainage Post -Development
Hyd. No. 2 --1 Year
20 40 60 80 100
Hyd No. 2
Q (cfs)
0.10
0.09
0.08
0.07
0.06
0.05
0.04
0.03
0.02
0.01
0.00
120
Time (min)
Hl drograph Report
2
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2008 by Autodesk, Inc. v6.051
Hyd. No. 2
Parcel Drainage Post -Development
Hydrograph type
= SCS Runoff
Storm frequency
= 10 yrs
Time interval
= 2 min
Drainage area
= 198.140 ac
Basin Slope
= 0.5 %
Tc method
= KIRPICH
Total precip.
= 6.83 in
Storm duration
= 24 hrs
* Composite (Area/CN) = [(177.700 x 25) + (15.780 x 39) + (4.660 x 98)] / 198.140
Q (cfs)
3.00
2.00
1.00
Tuesday, Dec 8, 2009
Peak discharge = 2.656 cfs
Time to peak
= 940 min
Hyd. volume
= 75,433 cuft
Curve number
= 28*
Hydraulic length
= 5000 ft
Time of conc. (Tc)
= 42.29 min
Distribution
= Type III
Shape factor
= 484
Parcel Drainage Post -Development
Hyd. No. 2 --10 Year
120 240 360 480 600 720 840 960
Hyd No. 2
Q (cfs)
3.00
46
1.00
0.00
1080 1200 1320 1440 1560
Time (min)
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POINT PRECIPITATION
FREQUENCY ESTIMATES
FROM NOAA ATLAS 14
w,
North Carolina 34302900 N 78.107108 W 49 feet
from "Precipitation -Frequency Atlas of the United States" NOAA Atlas 14, Volume 2, Version 3
G.K Bonin, D. Martin, B. Lin, T. Parzybok, M.Yekta, and D. Riley
NOAA, National Weather Service, Silver Spring, Maryland, 2004
Fxiraoted: Mon, Sep 14 2009
Confidence Limits _ l�_ Seasonality yj` Location Maps
Other Info lj GIS data Maps ; Docs i' R
Precipitation Intensity Estimates Qn/hr)
ARI*60
(years)
Fgn7FT1
min
min
min
min
120
amain
3 fir
6 fir
12
24
fir
48
fir
4
d�a
7
da
10
1�
20
1a
30
liter
45
da
60
der
=
6.05
4.83
4.02
2.76
1.72
1.02
0.73
0.45
0.26
0.15
0.09
0.05
0.03
0.03
0.02
0.01
0.01
0.01
7.19
EHJ
4.82
3.33
2.09
1.24
0.89
0.54
0.32
0.18
0.11
0.06
0.04
OA3
0.02
0.02
0.01
0.01
0
8.40
6.73
5.67
4.03
2.58
1.5E
1.13
0.70
0.41
0.24
0.14
O O8
OAS
0.04
0.03
0.02
0.02
0.01
10
9.35
7.47
6.30
4.5E
2.97
1.86
1.34
0.83
0.49
0.28
0.16
0.09
0.06
0.04
0.03
0.02
0.02
0.02
25
10.55
8.40
7.10
5.26
3.50
2.26
1.65
1.02
0.61
0.36
0.20
0.1E
0.07
0.05
0.03
0.03
0.02
0.02
50
11.45
9.12
7.70
5.80
3.93
2.60
1.92
1.19
0.71
0.42
0.24
0.13
0.08
0.06
0.04
0.0E
0.02
0.02
100
12.38
9.83
8.29
6.35
4.37
2.97
2.22
1.38
0.83
0.50
0.28
0.15
0.09
0.07
0.04
0.03
0.03
0.02
200
13.30
10.54
8.86
6.90
4.84
3.37
2.55
1.59
0.97
0.58
0.32
0.17
0.10
0.08
0.05
0.04
0.03
0.02
F5-0-0-1
14.50
11.47
9.62
7.65
5.49
3.96
3.05
1.92
1.17
0.71
0.39
0.20
0.12
0.09
0--
0.04
0.03
0.03
1000
15.48
12.19
10.20
8.26
6.03
4.47
3.49
2.20
1.35
0.83
0.45
0.23
0.14
0.10
0.06
0.04
0.04
0.03
* These precipitation frequency estimates are based on a partial duration series. ARI is the Average Recurrence Interval.
Please refer to NOAA Atlas 14 Documerd far more information. NOTE: Formatting forces estimates near zero to appear as zero.
* Upper bound of
PrecipitatFion
ARI**[:5�]F-10-�[15 30 60 120 3
min min min min min fir
the 90% confidence interval
Intensity Estimates (in/hr)
6 12 24 48 4 7 10 20 30 4560(years)
fir hr hr hr day day day 11 day day 11 day 11 day
6.54
5.22
4.35
2.98
1.86
1.11
0.80
0.49
0.29
0.17
0.10
O.OS
0.04
0.03
0.02
0.02
0.01
0.01
0
7.76
6.21
5.20
3.59
2.25
1.36
0.97
0.60
F6-351
0.20
0.12
0.07
0.04
0.03
0.02
0.02
0.02
0.01
9:07
7.26
6.12
4.35
2.79
1.73
1.24
D.77
0.45
0.26
0.15
0.08
0.05
0.04
0.0
OO 02
0.02
0.02
10
10.08
8.06
6.80
4.93
3.2E
2.03
1.47
0.91
0.54
0.32
0.18
0.10
0.06
0.05
.03
0.02
0.02
0.02
25
11.35
9.05
7.64
5.66
3.77
2.47
1.81
1.12
0.67
0.40
0.2-
0.12 1
0.08
0.06 I
0.04
gfl
0.02
OA2
50
12.34
9.82
8.29
6.24
4.23
2.83
2.10
1.31
0.79
0.47
0.27
0.14
0.09
0.07
0.04
0.03
0.03
0.02
100
13.33
10.60
8.93
6.84
4.71
3.24
2.43
1.51
0.92
0.55
0.31
0.16
0.10
0.08
0.05
0.04
0.03
0.02
200
14.33
11.36
9.55
7.44
5.21
3.67
2.78
1.74
1.06
0.65
0.36
0.19
0.12
0.09
0.05
0.04
0.03
0.03
500
15.66
12.39
10.40
8.27
5.93
4.32
3.33
2.10
1.29
0.79
0.44
0.23
0.14
0.10
O 06
0.04
0.03
0.03
1000
16.75
13.19
11.04
8.94
6.53
4.88
3.81
2.41
1.49
0.93
0.51
0.26
0.15
0.11
0.07
0.05
0.04
0.03
The upper bound of the confidence interval at 90% confidence level is the value which 5%of the simulated quantile values for a given frequency are greater than.
"These precipitation frequency estimates are based on a partial duration series. ARI is the Average Recurrence Interval.
Please refer to NOAA Atlas 14 Documentfor more information. NOTE: Formatting prevents estimates near zero to appear as zero.
* Lower bound of the 90% confidence interval
Precipitation Intensity Estimates (in/hr)
A55** 5 X1? 15 30 60 gl�0 3 6 12 24 48 4710 ZO3045 60(years) min min min min n fir fir fir fir hr day day day day day da day
=
EKJ
Ejj
3.74
2.56
1.60
Ej
0.67
0.41
0.24
0.14
0.08
0FO 57
0.03
0.02
0.02
0.01
F TQ
0.01
0
6.67
5.33
4.47
3.09
1.94
1.15
0.81
0.50
0.29
0.17
0.10
0.06
0.04
0.03
0.02
0.02
0.01
0.01
7.79
6.23
5.26
3.73
2.39
1.46
1.04
0.64
0.37
0.22
0.13
0.07
0.05
0.04
0.02
0.02
0.02
0.01
10
8.64
6.91
5.82
4.22
2.75
1.71
1.23
0.75
0.44
0.26
0.15
0.08
0.05
0.04
0.03
0.02
0.02
0.02
F257
9.70
7.73
6.53
4.84
3.22
2.06
1.50
0.93
0.54
0.32
0.18
0.10
0.06
0.05
0.03
0.03
0.02
0.02
50
10.49
8.35
7.05
5.31
3.60
2.36
1.74
1.07
0.63
0.38
0.21
0.11
0.07
0.06
0.04
0.03
0.02
0.02
100 1
11.27
8.96
7.55
5.78
3.98
2.68
1.99
1.23
0.73
0.44
0.25
0.13
0.08
0.06
0.04
0.03
0.02
0.02
200
12.02
9.53
8.02
6.24
4.38
3.02
2.27
1.41
0.84
0.50
0.28
0.15
0.09
0.07
0.04
0.03
0.03
0.02
500
12.98
10.27
8.62
6.86
4.92
3=
2. 88
,11 67
1.01
0.60
0.33
0.17
0.11
0.08
0.05
0.04
0.03
0. 22
1000
13.75
10.83
9.06
7.34
5.36
3.93
3.02
1.89
1.E5
0.69
0.38
0.19
0.12
0`09
0.05
0.04
0.03
0.03
'The tower
bound of the
confidence
interval
at 90% confidence
level is the
value which
5%of
the simulated
auanfile
values
fora aiven
teauencv
are less
than.
aturn to State Mapjs�,j
"These precipitation frequency estimates are based on a partial duration maldma series. ARI is the Average Recurrence Interval.
Please refer to NOAA Atlas 14 Document for more information. NOTE: Formatting prevents estimates near zero to appear as zero.
Text version of tables�
Partial duration based Point IDF Curves - Version: 3
34.302900 M 78.107108 W 49 ft
10
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Mon Sep 14 15s05813 2009
Maps -
Average Reourrenoe Interval
(wears)
2-year t 100-year —
-, ar, -§-- 200-year -e,-
10-year -e- 500-year -+-
25- ear ems- 1000- ear -e-
r ;
170"'W 110-W 100"'W q0"'W i90"'W
z
r �
t
70"W
These maps were produced using a direct map request from the
U.S. Census Bureau Mapoino and Cartographic Resources
Tiler Map Server.
Please read disclai for more information.
I 111'0 d ZJ;
- State
— Connector
County
Stream
Indian Resv
Military Area
Lake/Pond/Ocean National Park
Street
Other Park
— Expressway
City
Highway
o Z--sCqunty6 s
Scale 1: 22i15bs
22 f1
*average —true scale
depentls on Monitor$ esoloution
Other Maps/Photographs -
View USGS digital ortho hp oto quadrangle (IDOQ) covering this location from TelraServer; USGS Aerial Photograph may also be available
from this site. A DOQ is a computer -generated image of an aerial photograph in which image displacement caused by terrain relief and camera
tilts has been removed. It combines the image characteristics of a photograph with the geometric qualities of a map. Visit the USGS for more information.
Watershed/Stream Flow Information -
Find the Watershed for this location using the U.S. Environmental Protection Agency's site.
Climate Data Sources -
Precipitation frequency results are based on data from a variety ofsources, but largely NCDC. The.following links provide general information
about observing sites in the area, regardless of if their data was used in this study. For detailed information about the stations used in this study,
please refer to NOAA Atlas 14 Document.
Using the National Climatic Data Center's (NCDC? station search engine, locate other climate stations within:
+50 minutes ...OR.. f +/-1 degree of this location (34.302900/-78.107108). Digital ASCII data can be obtained directly from N D
Hydrometeorological Design Studies Center
DOC/NOAA/National Weather Serviee
1325 East-West Highway
Saver Spring, MD 20910
(301)713-1669
Questions?:T�rtaaaeov
Disclaimer
Northwest WTP Stormwater Channel
H&S Project No.: 30994
Date: 11/30/09
Calculated by: MPJ
Checked by: EHK
Objective: Determine channel dimensions required for non -erosive velocities
Location: East of proposed clearwell
Post-Develooment Channel
Total
19658
ft2
1 0.45
Jacre
Impervious
15332
ft2
1 0.35
lacre
Pervious
4326
ft2
0.10
1 acre
% Impervious
78%
in/hr
1 cfs
Avg. C
0.78
10-Tr 5-min Rainfall Int.
9.35
Peak Q
3.29
Normal Depth Procedure (Adapted from Malcom's Elements of Urban Stormwater Designl
Q (cfs)
3.29
n
0.03
Slope (ft/ft)
0.085
Zreq
0.2
0.0
Depth (ft)
0.26
Bottom Width (ft)
2
Side Slope (ft:ft)
4
Area (ft2)
Wetted Perimeter (ft)
Hyd. Radius (ft)
Zav
Velocity (ft/s)
Shear Stress (lb/ft2)
Temporary Liner:
Straw with Net
Allowable Shear Stress (Ib/ft2)
1.45
Estimate or use solver to balance Zreq and Zav
Northwest WTP Stormwater Velocity Dissipater
H&S Project No.: 30994
Date:11/24/09
Calculated by: MPJ
Checked by: EHK
Milestone: Permitting
Objective: Determine peak flow draining to velocity dissipation structure
and determine 10-yr flow velocity over structure
Time of Concentration
* 5 minute Tc used for all calculations, since Tc for longest flow path is < 5 minutes
Rainfall Intensities
1-yr
6.05
in/hr
2-yr
7.19
in/hr
5-yr
8.4
in/hr
10-yr
9.35
in/hr
25-yr
10.55
in/hr
50-yr
11.45
in/hr
100-yr
12.38
in/hr
Obtained from NOAA ATLAS 14 using coordinates for site from Google Earth
Total
81600
ft2
11.87
1 acre
Impervious
30474
ft2
0.70
acre
Pervious
51126
ft2
11.171acre
% Impervious
37%
0.56
Peak Flows
Avg. C
Rational Method
1-yr
6.29
cfs
2-yrl
7.48
1 cfs
5-yrl
8.74
1 cfs
10-yr
9.73
cfs
25-yr
10.98
cfs
50-yr
11.91
cfs
100-yr
12.88
cfs
10-vr flow over dissipation structure
10-yr Flow
9.7
cfs
Cw
3
Length
40
ft
Head
0.19
ft
Velocity
1.3
ft/s
Northwest WTP Stormwater Channel
H&S Project No.: 30994
Date:12/17/09
Calculated bv: MPJ
Checked by: EHK
Objective: Determine channel dimensions required for non -erosive velocities
Location: Downstream of proposed velocity dissipater
Post -Development Channel
Total
81600
ft'
1 1.87
Jacre
Impervious
30474
ftZ
0.70
lacre
Pervious
51126
ft2
1.17
Jacre
% Impervious
37%
hr
Avg. C
0.43
10-yr 5-min Rainfall Int.
9.35 1cfs
Peak Q
7.53
Normal Depth Procedure (Adapted from Malcom's Elements of Urban Stormwater Design)
Q (cfs)
7.53
n
0.04
Slope (ft/ft)
0.02
Zreq
1.4---
0.0
Depth (ft)
0.14
Bottom Width (ft)
40
Side Slope (ft:ft)
4
Area (ft')
5.49
Wetted Perimeter (ft)
41.12
Hyd. Radius (ft)
0.13
Zav
1.4' �'
Velocity (ft/s)
1.37
Estimate or use solver to balance Zreq and Zav
co
0
m
to
Lj
I
M
W
DELINEATION SITE L/MI
UDGE PIT
[-nrjs•36'43"W 282.88'
SITE AREAS: BLDG
TOTAL PARCEL AREA: 2001 AC.
TOTAL DELINEATION SITE AREA: 13.67f AC.
404 WETLAND AREA 1: 0.98f AC
LEGEND
404 WETLAND AREA
xi 404 WETLAND FLAG
(FTDS = TIE TO DELINEATION SITE)
STORM DRAIN PIPE
000 (CPP = CORRUGATED PLASTIC
o RCP = REINFORCED CONCRETE) z
z GRAPHIC SCALE
u 0 50 100 N88'00'35"W
z 102.39'
CL
V) 1 inch = 100 ft.
. . . EX. REBAR
N: 203308. 6 Y NCO.
� E: 2269898.78 00 � 0800 ,!
S86'36'50"E 2 4 I
780.�94'
TTDi12S2 1
0 - TTD
C
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27
... ..�
45
21 .'.•...
_
. . .
. . 44
22
...
43
23 ..
•.'
- .
42
.- 404 WETLAND . 41N
AREA 1
TOTAL AREA
24 WITHIN
DELINEATION
SITE LIMITS 40
�6•
/5--. 0.98# AC.
39
38
30
29 3t .... .
28 32 . ' ' ' '•
37N
33
36
135
^
1 CLEAR WELL 2 �.
T DR
ItfWAY
N87'17'38"W- i�;9u �a-
BLDG
EX. REBAR
N: 203359.82 /
NE: 2270218.75 I
h
N: 203211.64
E: 2 i 70165.92 '.'% C A I I IT77�
ti [
Q
fn
203000
�
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WETLAND FLAG COORDINATE TABLE
FLAG
NORTHING
EASTING
TTDS1
203232.63
2269811.22
20
203217.42
2269830.77
21
203142.01
2269845.64
22
203091.05
2269851.08
23
203019.94
2269859.92
24
202922.92
2269870.01
25
202882.05
2269829.30
26
202867.57
2269818.62
.27
202838.15
2269791.64
28
202823.56
2269804.85
29
202833.03
2269834.16
30
202851.26
2269895.80
31
202826.50
2269913.74
32
202811.43
2269915.97
33
202784.32
2269909.51
34
202757.86
2269938.34
35
202772.16
2269944.21
36
202801.84
2269956.27
37N
202802.29
2269986.83
38
1 202550.73
2269970.24
39
202877.11
2269978.62
40
202907.64
2269990.00
41N
202971.96
2269988.11
42
203009.59
2269940.03
4
1 203053.43
2259922.48
44
20J116.24
2269929.98
45
203168.93
2269908.68
TTD52
1 203226.80'
2269909.70
A426
0
a-
�Ln
SR 1
~-DELINEATION SITE
PARCEL
SQL RR
VICINITY MAP (NTS)
GENERAL NOTES:
1. THIS IS A CLEAN WATER ACT, • SECTION 404 JURISDICTIONAL (404) MAP
THIS IS NOT A BOUNDARY SURVEY. PARCEL BOUNDARY SHOWN PER
BRUNSWICK COUNTY TAX DATA.
2. 404 DELINEATION SITE DOES NOT REPRESENT AN EXISTING PARCEL
BOUNDARY. IT IS A PORTION OF BRUNSWICK COUNTY PINT1-047-05.
(OWNER: N/F - SIMPKINS, AGNES FRANKS; DB: 413, PG: 347).
3. 404 AREAS DELINEATED BY COASTAL ENVIRONMENTAL CONSULTING
(910-791-6411) AND FIELD SURVEYED BY WITHERS & RAVENEL USING
A TOTAL STATION SURVEY INSTRUMENT CAPABLE OF 0100'07"
ACCURACY.
404 WETLANDS DELINEATION CERTIFICATE
THIS CERTIFIES THAT THIS COPY OF THIS PLAT ACCURATELY DEPICTS THE
BOUNDARY OF THE JURISDICTION OF SECTION 404 OF THE CLEAN WATER
ACT WITHIN THE DESIGNATED INSET AREA, AS DETERMINED BY THE
UNDERSIGNED ON THIS DATE. OTHER AREAS OF JURISDICTION MAY BE
PRESENT ON THE SITE BUT HAVE NOT YET BEEN DELINEATED. UNLESS
THERE IS A CHANGE IN THE LAW OR OUR PUBLISHED REGULATIONS, THIS
DETERMINATION MAY BE RELIED UPON FOR A PERIOD NOT TO EXCEED FIVE
YEARS FROM THIS DATE. THIS DETERMINATION WAS MADE UTILIZING THE
1987 CORPS OF ENGINEERS WETLAND DELINEATION MANUAL. ANY ISOLATED
WETLANDS OR WATERS THAT ARE OUT OF CORPS JURISDICTION HAVE BEEN
LABELED ON THE SURVEY.
-MAWRE, U.S ARMY CORPS OF ENGINEERS OFFICIAL DA TE
TI TLE.
EXPIRATION DA TE OF DELINEATION:
USACE ACTION ID: •.iJ � ' ------
CERTIFICATE OF ACCURACY & MAPPING
I, THE UNDERSIGNED. CERTIFY THAT THIS SURVEY WAS DRAWN UNDER MY
SUPERVISION AND THAT THIS SURVEY HAS BEEN PREPARED IN ACCORDANC
MT14 THE STANDARDS OF WETLAND PLATTING AS ESTABLISHED BY THE U.S.
ARMY CORPS OF ENGINEERS, WIINES'S MY ORIGINAL SIGNATURE, LICENSE
NUMBER AND SEAL THIS OA Y OF O e-r 200�'
MILES 0. Mc ALL, Ill - PROFESSIONAL LAND SURVEYOR L-318)
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