SW8060553_HISTORICAL FILE_20111118

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW8 Oh 055'J
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
® HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
•JL)\\ �\\lg
YYYYMMDD
I

NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins
Governor Director
November 18, 2011
Ms. Teresa Nixon, Manager
First Troy SPE, LLC
PO Box 508
Troy, NC 27371
Subject: Approved Plan Revision
Porter's Pointe Subdivision
Stormwater Project No. SW8 060553
New Hanover County
Dear Ms. Nixon:
Dee Freeman
Secretary
On November 18, 2011, the Wilmington Regional Office received a plan revision for Stormwater Management Permit
Number SW8 060553. The revisions include reallocating already -permitted impervious area as shown in the table
below. It has been determined that a formal permit modification is not required for the proposed changes. We are
forwarding you an approved copy of the revised plans for your files. Please add the attached plans to the previously
approved plan sheet.
Onsite Buildings
Onsite Streets
Onsite Sidewalks
Onsite Other
Future
6/16/11 Permit
11/18/11 Plan
Revision
DA A DA B
122,458
116,398
122,458
116,398
74,499
58,534
74,499
58,534
14,306
7,369
14,306
7,369
0
0
7,359
0
32,730
10,000
25,371
10,000
243,993 192,301 243,993 192,301
Please be aware that all terms and conditions of the permit issued on June 16, 2011, remain in full force and
effect. Please also understand that the approval of this revision to the approved plans for the subject State
Stormwater Permit is done on a case -by -case basis. Any other changes to this project must be approved
through this Office prior to construction. The issuance of this plan revision does not preclude the permittee from
complying with all other applicable statutes, rules, regulations or ordinances which may have jurisdiction over the
proposed activity, and obtaining a permit or approval prior to construction.
Wilmington Regional Office
127 Cardinal Dnve Extension, Wdm ngton, North Carolina 28405
Phone: [phone] FAX. [phone] Customer Service 1-877-623-6748
Internet w nmaterquality.org
NorthCarojina
Naturally

S W 8 060553
November 18, 2011
If you have any questions concerning this matter, please do not hesitate to call Georgette Scott or me at (910) 796-
7215.
Sincerel ,
y
Johns
Environmental Engineer
GDS\kpj: S:\WQS\StormWater\Permits & Projects\2006\060553 HD\2011 11 permit_pr 060553
cc: Luke Menius, PE, Stroud Engineering
Inspector, New Hanover County Building Inspections
WilmingtonRegional Office
Central Files
Pn.P ? of

DWQ USE ONLY
Date Received
Fee Paid
Permit Number
Ll,ivc k
Applicable Rules: ❑ Coastal SW - 1995 ❑ Coastal SW - 2008 ❑ Ph I - Post Construction
(select all that apply) ❑ Non -Coastal SW- HQW/ORW Waters ❑ Universal Stormwater Management Plan
❑ Other WQ M mt Plan:
State of North Carolina
Department of Environment and Natural Resources=BY:
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION
This form may be photocopied for use as an original
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.):
Porters Pointe Subdivison
2. Location of Project (street address):
Porters Neck Road between US 17 and Lantana Lane
City: Wilmington County: New Hanover Zip: 28411
3. Directions to project (from nearest major intersection):
Traveling north on US 17, take a right on Porters Neck Road. The subdivision is approximately 0.25 miles
down Porters Neck Road on the right. The project site is in the western corner of the subdivison, at the
present terminous of Frogmore Lane.
4. Latitude: 34' 17' 51" N Longitude: 77' 47' 20" 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 SW8 060553 , its issue date (if known) 12/19/2006 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 ❑Sedimentation/Erosion Control: ac of Disturbed Area
❑NPDES Industrial Stormwater ❑404/401 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 07Jun2010 Page 1 of

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 proiect):
Applicant/Organization: First Troy SPE, LLC
Signing Official & Title: Jennifer D. Smith, Vice President and Registered Agent
b.Contact information for person listed in item la above:
Street Address: 18 Chatham Corner
City: Pittsboro State: NC Zip: 27312
Mailing Address (if applicable): PO Box 1757
City: Pittsboro State: NC Zip: 27312
Phone: ( 919 ) 542-0460 Fax: ( 910 ) 542-2872
Email: ismith®firstbancorp.com
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:
Mailing Address (if
Phone:
State: Zip:
State: Zip:
Fax: ( 1
3. a. (Optional) Print the name and title of another contact such as the projects 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:_
Phone:
Fax:
4. Local jurisdiction for building permits: New Hanover County
Point of Contact: Planning and Inspections Dept. Phone #: ( 910 ) 798-7165
Form S WU-101 Version 07Jun2010 Page 2 of 6

IV. PROJECT INFORMATION
1. In the space provided below, briefly summarize how the stormwater runoff will be treated.
Stormwater will be collected via curb and gutter and piped into one of two infiltration basins for treatment
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: SW8 060553 Date: 12/19/2006
b.If claiming vested rights, identify the regulation(s) the project has been designed in accordance with:
® Coastal SW - 1995 ❑ Ph II - Post Construction
3. Stormwater runoff from this project drains to the Cape Fear River basin.
4. Total Property Area: 24.29 acres 5. Total Coastal Wetlands Area: 0 acres
6. Total Surface Water Area: 0 acres
7. Total Property Area (4) - Total Coastal Wetlands Area (5) - Total Surface Water Area (6) = Total Project
Area+:24.29 acres
Total project area shall be calculated to exclude the following the normal pool of urnppounded structures, the area
between the banks of streams and rivers, the area below the Normal High Water (NM line or Mean High Water
(MHW) line, and coastal wetlands landward from the NHW (or MHW) line. The resultant project area is used to
calculate overall percent built upon area (BUA). Non -coastal wetlands landward of thte NHW (or MHW) litre tuay
be included in the total project area.
8. Project percent of impervious area: (Total Impervious Area / Total Project Area) X 100 = 34.06 %
9. How many drainage areas does the project have? 2 (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.
Basin Information
Drainage Area 1
Drainage Area 2
Drainage Area _
Drainage Area _
Receiving Stream Name
Pages Creek
Pages Creek
Stream Class *
SA; HQW
SA; HQW
Stream Index Number *
18-87-22
18-87-22
Total Drainage Area (so
501,657
409,991
On -site Drainage Area (sf)
501,657
409,991
Off -site Drainage Area (sf)
0
0
Proposed Impervious Area** (so
1 243,993
192,301
% Impervious Area** total
48.64
1 46.90
Impervious— Surface Area
Drainage Area 1
Drainage Area 2
Drainage Area _
Drainage Area _
On -site Buildings/Lots (so
122,458
116,398
On -site Streets (so
74,499
58,534
On -site Parking (so
0
0
On -site Sidewalks (so
14,306
7,369
Other on -site (so
7,359
0
Future (sf)
25,371
10,000
Off -site (sf)
0
0
Existing BUA*** (sf)
0
0
Total (so:
243,993
192,301
* Stream Class and Index Number can be determined at: http. portal.ncdenr.orgfwe6fwq[ps/csn/classu cations
* Impervious 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 BUA that will remain after development. Do not report any existing BUA that
is to be removed and which will be replaced by new BUA.
Form SWU-101 Version 07Jun2010 Page 3 of

11. How was the off -site impervious area listed above determined? Provide documentation.
Projects in Union County: Contact DWQ Central Office staffto check if the project is located within a Threatened &
Endangered Species watershed that maybe 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 http://vortal.ncdenr.ore/web/wq/ws/su/bmv-manual.
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 htW://portal.ncdenr.org/web/wq/ws/su/statesw/forms does. 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 htip:/[portal.ncdenr.org/web/wq/ws/su/maps.)
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 hU://portal.ncdenr.org/web/wq/ws/su/statesw/forms does.
Initials
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
http://www.envhelp.org/pages/onestopexpress.html 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 1/2 mile of the site boundary, include the 1/2
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.
L 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.
in. 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).
Form SWU-101 Version 07Jun2010 Page 4 of 6

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"xll" copy of the NRCS 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, [phone].)
10. A copy of the most current property deed. Deed book: 5454 Page No: 969 _
11. For corporations and limited liability corporations (LLC): Provide documentation from the NC _
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 21-1.1003(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.
http://www.secreta[y.state.nc.us/Corporations/CSearch.aspx
VIL 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://portal.ncdenr.org/web/wq/ws/su/statesw/forms does. 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: David L.Menius, P.E.
Consulting Firm: Stroud Engineering, P.A.
Mailing Address: 102-D Cinema Drive
City: Wilmington
Phone: ( 910 ) 815-0775
Email: [e-mail]
State: NC Zip: 28403
Fax: ( 910 ) 815-0593
IX. PROPERTY OWNER AUTHORIZATION (if Contact Information, item 2 has been filled out, complete this
section)
I, (print or type name of person listed in Contact Information, item 2a) na , 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 la) na with (print or hjpe name of organization listed in
Contact Information, item 1a) na 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 07Jun2010 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.
a Notary Public for the State of
do hereby certify that
before me this _ day of
Date:
County of
personally appeared
. and acknowledge the due execution of the application for
a stormwater permit. Witness my hand and official seal,
SEAL
My commission
X. APPLICANT'S CERTIFICATION
I, (print or hjpe name of person listed in Contact Information, item 1a) Jennifer D. Smith, Vice President, First Trou SPE,
LLC
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 enants ill be recorded, and that the proposed project complies with the requirements of the
applicable rmwate les under 15A NCAC 2H .1000, SL 2006-246 (Ph. II - Post Construction) or SL 2008-211.
Date:-, r' 1
I, Cynt� Schdolfiield a Notary Public for the State of North Carolina . Countyof
New Hanover do hereby certify that Jennifer D Smith personally appeared
before me this 21 day of October 2011 , and acknowledge the e e cution oft e a pISa:t:i 1 for
a stormwater permit. Witness my hand and official seal,
c�
SEAL
My commission
Form SWU-101 Version 07Jun2010
Page 6 of 6

Johnson, Kelly
From: Luke Menius [[e-mail]]
Sent: Friday, November 18, 2011 10:58 AM
To: Johnson, Kelly
Subject: RE: Porter's Point SW8 060553
Attachments: SW Application.doc, bua table. pdf
Chalk that one up to a huge rounding error. The table on page 3 of the application is updated if you'd like to print if off
and insert it. The BUA table on the plans should be corrected as indicated on the attached pdf.
Thanks for catching that. Let me know if anything else comes up.
From: Johnson, Kelly [mailto:kelly,Q,johnsonCalncdenr.govl
Sent: Friday, November 18, 2011 10:46 AM
To: Luke Menius
Subject: Porter's Point SW8 060553
Luke,
I think you have a little more "future" left for the clubhouse area. Is the attached summary what you are looking for?
so, the clubhouse future reserve will go from 11,342 (as shown on the plans) to 15,371 in order for the whole DA A to
sum to the already -permitted 243,993. If this is what you are intending to do, please let me know and I will make the
change to the plans & initial it to get this issued this afternoon.
Thanks,
KJ
***My email has changed to kellv.p.iohnson()ncdenr.gov
K.CU1I JOHInSOw
KellyJohnson
Environmental Engineer
Division of Water Quality
Stormwater Permitting
127 Cardinal Drive Extension
Wilmington, NC 28405-3845
Office: 910.796.7331
Fax: [phone]
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.

IMPERVIOUS CALCULATIONS
BUILDING AREA= 1247 SF
PARKING LOT/ DRIVEWAY AREA= 4984 SF
SIDEWALK AREA= 1128 SF
RESERVE= 15371 SF vio5 40-
TOTAL IMPERVIOUS= 22730 SF
TRACT AREA= 44051 SF
PERCENT IMPERVIOUS= 51.6%
LIMITS OF DISTURBANCE- 0.54 AC

Complete ess Review Checklist
Project Name: lti5 a16ar- RD1fS1n/V� Received Date:
Project Location: N)F} (Irx)An .A Accepted Date:
IRule(s) n2008 Coastal
El1995 Coastal
Phase II (WiRO) Universal
El1988 Coastal
Type of Permit: New or
Mod o P
Existing Permit # (Mod or PR):
FIPE
fart on File?
HD or LD ) Type: Commercial or Residential
% DO) I Stream Class:
Map
to SW8
Paperwork
]Supplement(s)(1original per BMP) BMPType(s): �CANl �k51JPli
JO&M with correct/original signatures (1 original per BMP except LS/VFS and swoles)
ication with correct/original signatures
or LLC: Sig. Auth. per SoS or letter
F-1$505 (within 6mo)
Soils Report with SHWT
Calculations (signed/sealed)
MNo obvious errors
-nsity includes common areas, etc
Restrictions, if subdivided:
Note to Reviewer:
"Signed & Notarized
Correct Template (Comm/Res & HD/LD) or Dec Covenants & Rest
Plans
�2 Sets
Details (roads, cul-de-sacs,
curbs, sidewalks, BMPs, Buildings, etc)
Grading
Wetlands: Delineated or No Wetlands
Vicinity Map
El Layout (proposed BUA dimensions)
Legend
ElDA Maps
Project Boundaries
Infiltration
Wet Pond
Offsite
Soils Report
Soils Report
F-1PE Cert for Master Lot #:
SHWT:
1-1 Deed Rest for Master Lot # Matches Master
Bottom:
�SHWT:
PP:
BUA Permitted (Master): sf
Visited:
BUA Proposed (Offsite): sf
Additional Information:
Permitted
Proposed:
Proposed: Proposed:
BUA (sf)
DA (sf)
PP (el)
SHWT (el)
Depth (ft)
SA (sf)

STROUD ENGINEERING, P.A.
102-D Cinema Drive
WILMINGTON, NC 28403
[phone]
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WE ARE SENDING YOU ❑ Attached ❑ Under separate cover via the following Items:
❑ Shop drawings ❑ Prints ❑ Plans ❑ Samples ❑ Specifications
❑ Copy of letter ❑ Change order ❑
COPIES
DATE
NO.
DESCRIPTION
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THESE ARE TRANSMITTED as checked below:
❑ For approval
❑ For your use
❑ As requested
❑ For review and comment
❑ FORBIDS DUE
❑ Approved as submitted
❑ Approved as noted
❑ Returned for corrections
❑ Resubmit copies for approval
❑ Submit copies for distribution
❑ Return corrected prints
❑ PRINTS RETURNED AFTER LOAN TO US
COPY TO
If enclosures are not as noted, kindly notify us at once.

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Project: PW-989
Engineer: DLM
Date: 11/11/2011
Porters Pointe Amenity Site
Project Narrative
Introduction
The site is located within the Porters Pointe Subdivision in northern New Hanover County. It
consists of a pool and adjoining structure which houses the pool mechanical room, restroom
facilities, and a covered porch. The amenity site is designed to serve the aforementioned 59 lot
subdivision, which is zoned PD. The site is bounded by an existing commercial use to the
northwest, residential uses to the northeast and the Porters Pointe subdivision to the southeast
and southwest. The site is presently cleared and will require little additional grading. No
wetlands or trees exist on the portions of the site to be disturbed.
Roadways
The site is located at the present terminus of Frogmore Lane, a 45' public R/W. A parking lot
will be provided with direct access to Frogmore Lane, though the sidewalk and alleyways within
the subdivision encourage foot and bike travel. No work in Frogmore Lane is proposed and at
present, the NCDOT has not yet adopted it for maintenance.
Utilities
The site is afforded water and sewer by CFPUA. A 6" sewer service and 2" water main are
stubbed out beyond the terminus of Frogmore Lane. The water main terminates with a 2"
blowoff assembly. Two taps with'/4" meters and RPZs are proposed for irrigation and domestic
use.
Stormwater
The Porters Pointe Subdivision was issued NCDENR and NHC stormwater permits which
specify a maximum built upon area for each lot. The subject amenity lot is allowed 22,730 sf of
BUA and proposes 11,388 sf of improvements with a 11,342 sf reserve. Stormwater from all
impervious surfaces will be collected in an existing piped system and directed to infiltration
basin A for treatment and disposal.
Erosion Control
The site topography is very nearly flat. Erosion control measures for the site are to consist of silt
fence around the perimeter of disturbance, inlet protection at two existing drop inlets, a gravel
construction entrance, sediment traps, and timely stabilization per the seeding schedule. The
soils in the project area are Leon fine sands.
NOV 14 2011
BY:

SWALE CALCULATIONS
PROJECT PORTERS POINTE AMENITY SITE
PROJECT 9. PW-989
DATE 10H040ll
NOTES
CHECK USING MANNING EQUATION
ESTMATED TIME OF CONCENTRATON=
10 MIN
PER SOILS AND TOPOGRAPHY
RESULTING 10 YR RAINFALL INTENSITY
776 INMR
PER NOAA ATLAS 14, ILM STATION
SWALE DA PERCENT IMPERVIOUS=
40%
CONSERVATIVE VALUE
RESULTING 'C" =
05
MANNING'N' VALUE =
003
ROUGH CHANNEL WITH GRASS
SWALE SIDE SLOPES=
02 VH
DESIGN UTILIZES A CONSERVATIVE ESTIMATE OF 40% BUA DUE TO UNCERTAINTY OF LOT IMPROVEMENTS
SWALE
NUMBER
DRAINAGE
AREA AC
IMPERVIOUS
AREA (ACII
PERVIOUS
AREA AC
RUNOFF
RATE CFS)
SWALE
SLOPE(FT/
BOTTOM
WIDTH
RUNOFF
DEPTH
DESIRABLE
VELOCITY
RUNOFF
VEL FPS
SWALE
CAPACITY
RUNOFF
VELOCITY
1
037
015
022
1 44
0 008
06
050
2 W
1 79
OK
OK
2
050
020
030
1M
0008
13
050
2W
109
OK
OK
EROSION CONTROL CALCULATIONS
PROJECT PORTERS POINTE AMENITY SITE
PROJECT* PW-989
DATE 10I1BI20ll
NOTES.
ESTMATED TIME OF CONCENTRATION =
RESULTING 10 YR RAINFALL INTENSITY=
CONSTRUCTION PHASE'C' _
TST 1
DISTURBANCE AREA =
DRAINAGE AREA=
Q=CIA =
VELOCITY THROUGH TRAP =
SURFACE AREA = 01 - 0 =
STORAGE = 3000 CF PER AC DISTURBEC
LENGTH 55
WIDTH 10
DEPTH 3
SURFACE AREA =
VOLUME PROVIDED=
10 MIN
PER SOILS AND TOPOGRAPHY
778 INMR
PER NOAA ATLAS 14. ILM STATION
03
PER SOILS AND TOPOGRAPHY
TST 2
027 AC
DISTURBANCE AREA=
037 AC
DRAINAGE AREA=
086 CFS
Q=CIA =
007 FPS
VELOCITY THROUGH TRAP=
375 SF
SURFACE AREA =01.0=
972 CF
STORAGE= 3B00 CF PER AC DISTURBED=
LENGTH 55
WIDTH 10
DEPTH 3
026 AC
0 50 AC
1 18 CFS
010 FPS
W7 SF
938 CF
550==REQUIRED. OK SURFACE AREA= 550> REQUIRED, OK
1005—REQUIRED, OK VOLUME PROVIDED = 1085 -REQUIRED, OK
4�CARG
SS%
G'Lz; 9
SEAL
35677 -
%D AvGINE. J'��
11 l 11I u1 I

STROUD ENGINEERING, P.A.
CONSULTING ENGINEERS
102-D CINEMA DRIVE
WILMINGTON, NORTH CAROLINA 28403
[phone]
November 11, 2011
NCDENR
Attn: Kelly Johnson
127 Cardinal Drive
Wilmington, North Carolina 28405
Re: Plan Revision for Porters Pointe Amenity Site
SW8 060553
Kelly,
Please find the attached revised plans for the aforementioned site in New Hanover County.
The permit allocates 22,730 sf of impervious to a future amenity area in drainage basin "A". The
attached site plan features a pool, clubhouse, walks, and parking that total 11,388 sf. The balance of
11,342 sf is noted on the plan as "future", yielding a total of 22,730 sf. All runoff from impervious
surfaces from the proposed amenity area is directed into the basin "A" collection system per the
permit.
Please feel free to contact me with any questions or concerns.
Attachments
Respectfully,
David L. Menius, P.E.
Stroud Engineering, PA
Nov 14 2011
fi1107 COMM�gRCE Sipd/kelly."pd HESTRON PLAZA TWO
SUITE B 102-D CINEMA DRIVE 151-A HWY. 24
GREENVILLE, NC 27858 WILMINGTON, NC 28403 MOREHEAD CITY, NC 28557
[phone] [phone] [phone]