20110731 Ver 1_More Info Received_20110912

Strickland, Bev
From: Witherspoon, Lauren
Sent: Monday, September 12, 2011 11:23 AM
To: Strickland, Bev
Subject: FW: DWQ Project #11-0731 (Post Parkside at Wade) 1 of 2
Attachments: Comment Response Letter.pdf; CV1.0.PDF; CV2.0.PDF; CV3.0.PDF; DWQ Comments_
081711.pdf; PCN (9.6.11).pdf; Det BMP 4.pdf; Nitrogen Map - Lot 6.pdf; Planting-BMP #4 11
X 17.pdf; Riprap Design BMP 4.pdf; WQ BMP 4.pdf; 40 Wade - Trinity Road Buffer
Letter.PDF; 40 Wade Approval.pdf; 40 Wade Stormwater Managment Plan Appoval.pdf; Map
of Stream at Parkside at Wade.PDF
For file
From: ColeJenest & Stone - Robert B. Hayes [maiIto: rhayesC)colejeneststone.comj
Sent: Tuesday, September 06, 20113:51 PM
To: Witherspoon, Lauren
Cc: Kelly Carter; ColeJenest & Stone - Kevin C. Ammons; ColeJenest & Stone - Luke C. Cagle; ColeJenest & Stone - W.
Larry Lockhart, Jr.; ColeJenest & Stone - Casey P. Werner; ColeJenest & Stone - Mark R. McAuley
Subject: DWQ Project #11-0731 (Post Parkside at Wade) 1 of 2
Lauren,
Please find attached for your approval the revised plans (CV1.0, CV2.0, & CV3.0), DWQ Comments dated 08.17.11,
Comments Response Letter, revised PCN application, BMP #4 calculations, and documents that you provided for us to
use from DWQ Project #06-0961 submitted by Withers & Ravenel. If you could please just reply back to me to confirm
that you have received this email, I would appreciate it. If you have questions or concerns, please give me a call.
Thank You,
Robert B. Hayes
COLEJENEST & STONE, P.A.
200 South Tryon Street, Suite 1400
Charlotte, North Carolina 28202
Tel [phone]
Dir 704-971-4552 1 Fax [phone]
www.cole*eneststone.com
think before you ink
This information is intended only for the use of the recipient or entity to which it is addressed. It may contain information that is privileged, confidential and subject
to copyright. Any unauthorized use, copying, review, retransmission or disclosure is strictly prohibited.
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E. Director
Colleen H. Sullins, Deputy Director
DMsian of Water Quality
October 6, 2005
iVlr. Kevin Martin
Soil & Environmental Consultants, PA
11010 Raven Ridge Road
Raleigh, NC 276t4
NBRRO 05-245
County: Wake
13ASIN:
Neese River X
(15A NCAC 2B ,0233)-
Tar-Pamlico
(1 5A NCAC 2B .02
Complaint NOV Buffer Determination X
Incident # Appeal Call
Project Name: Trinity Road Property - Raleigh
Location/Directions: Property is north of Trinity Road and bounded to the north by Wade Avenue, to the west by
Interstate Highway 40, and to the east by Edwards Mill Road.
Subiect Stream: UTs to Richland Creek
Date of Determination:1014f05
Feature Start Buffer
GPS Points (if provided) End Buffer Stream
Form Appeal
Call Located
on Soil
Survey Located on
USGS
Topographic
A Subject at S&EC Flag "NBR
High". Y
B Not Subject (Not On Maps)
C Subject at S&EC Flag "Start
NBR" x
D Subject (Not Contested) x x
E Not Subject 16 X
F Not Subject X
G Subject at S&EC Flag "Start
N I3R 03" X
H Not Subject (Pond Isolated) X X
Raleigh Regional Office 1628 Mail Service Center
Water Quality Section Raleigh, NC 27699-1628
1st
phone [phone] Customer Service
facsimile [phone] 1-877-623-6748
10/6/2006
Page 2 of 2
Feature Start Buffer
GPS Points (if provided) End Buffer Stream
Form Appeal
Call Located
on Soil
Survey located on
USGS
Fo o.-ra h is
I Subject (Not Contested) X X
J Not Subject X
K Not Subject X
L Subject at S&CC Flag "Start
NRR 02"
This ou-site determihatiort shall expire five (S) years from the date of this letter. Laitdowrrers or affectedparties
that dispute a deterinhiation inade by the D WQ or Delegated Local Authority that a surface water crusts rind that
it is .subject to the buffer rule may request it deteriuhiation by the Director. A rerluestfor it determincatiolt by the
Director shall be referred to the Director hr writing c% Quili Karoly, DWQ Wetland-s/401 Uirit, 1321 Crabtree
Blvd., Raleigh, V('27604-2260. lirtlividrials that dispute ti tleterrninatiott by the Dif'Q or Delegated Locttl
tutlrurily that "e-renipts " a surface water from they buffer rule iniq risk for an ail judicatory hearitig. You must
act within 60 clays of the date that you receive this letter. Applicants are hereby uotijt"ed that the 60-clay statutory
appeal bane does not start until the affeetedparty (including downstream aitd adjacetrt landowners) is notifled oJ,
this decision. DfVQ reconuumds that the applicant conduct this itotift'calion itt order to be certain that third
party appeals tyre [trade iu it titnely ruattner. To ask for a hearing, send a writtetr petition, avhich conjrrrnrs to
Chapter 150B of'the North Carolitta General Statutes to the Office of Atlntinistrative Hearitigs, 6714 :Flail
Service Center, Raleigh, N.C: 2 76 99-6 714. This determination is final acrd bin ditig unless you ask for it hearing
within 60 days.
The (orvrrer/future orvrrers) should notify the Division of Winter Quality (including utty other Local, State, and
Federal Agencies) of'this decisiotr concer?thig airy fixture correspoudeuces regarding the subject property (stated
above), This project may require a Sectiuir 4041401 Permit for the proposed activity. Any inquiries should be
directed to the Division of Water Quality (Central Office) at (919)-733-1786, and the USArnty Corp of Engineers
(Raleigh Regulatory Field Office) at (919)-876-8441.
ly,
Eric W. Kulz
Environmental
CC: File Copy
Central Files
DWQ 40 [/Wetlands Office
Ben Brown - City of Raleigh
VFW
Raleigh Regional Office 1628 Mail Service Center ,M.LILN
Water Quality Section Raleigh, NC 27699-1628
phone [phone] Customer Service
facsimile [phone] 1-877-623-6748
TopoZone -The Web's Topographic Map http://www.topozone.comrprint,asp"z-l7&n= 964921.99987342&e
] of] Ol-rr')nn'; 10-A) e rAR
Raleigh West quadrangle M-_8, 798
Projection is UTM Zone 17 NAD83 Datum G l ;
?D y 4S
a
C)
LV
y
� �
uj
cn
o
m ( c"I �F
t�
10,
tat � 1�N pa+'"_'m'�R �,�` �> f • "S "^ � � v 4 Y < � � `�''� • A ..iw'.'o¢'� pyj{
��'c w.,....�...amx^"` �^+�., r.,,�n-..,,,;,,:r�..J �'�d�.� p � � � " ..,,. '0 S� ( / �• �' _ ' �`� C"�.:7�f�
gg a
1 � � e •may s �
S ..� ��c.✓✓ pY ${ ..�dy` 9f l,�yp3y
ri
IM
rn
` `�•tN ~ ,�. ,.� �` �� �, d 3. /�. j4� C, � a ��"4 �L ,ye,t_* �nL �a
tom! c� .. � w-" • � �?-�
, fes•
bo
C'\1

r •'
U
w ?
Maps and databases are public information supplied
by various government agencies. The outhor and/or
seller of the software program are in no way
responsible or liable for the Infarrnotlan depicted
herein. Inquiries concerning the data should be
directed to the apprnprrate government agency.
i? 4)ti1L4. 5+.
Ck4
MapVUE "* a,..-?erQc7, 0
Feet [_t.134 15i! 9:46 ' OCT )1. 2001
378 i- Scale to 756
I
WAT pG
7
r
O `r
Mr. Julian Raul
Wexford Developers, LLC
100 Weston Estates Way
Cary, NC 27513
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E. Director
Division of Water Quality
August 7, 2006
DWQ Project # 06-0961
Wake County
Subject Property: 40/Wade
Ut to Richlands Creek [030402, 27-33-11, C, NSW]
Approval of 401 Water Quality Certification and Authorization Certificate per the Neuse River
Buffer Protection Rules (15A NCAC 2B.0233) with Additional Conditions - REVISED
Dear Mr. Raul:
You have our approval, in accordance with the attached conditions and those listed below, to place fill
within or otherwise impact 0.032 acres of wetland, 314 linear feet perennial stream (252 linear feet
permanent impacts, 62 linear feet temporary impacts), 37,904 square feet (ft) of protected Zone 1 Neuse
River basin riparian buffer and 26,470 square feet (ft) of protected Zone 2 Neuse River basin riparian
buffer as described in your application dated June 12, 2006, and received by the Division of Water
Quality (DWQ) on June 12, 2006, with more information received from you on July 6, for the purpose of
constructing the residential subdivision, commercial development and accompanying utilities at the site.
After reviewing your application, we have decided that the impacts are covered by General Water Quality
Certification Number(s) 3374 and 3402 (GC3374 and GC3402). The Certification(s) allows you to use
Nationwide Permit(s) NW 12 and NW39, respectively, when issued by the US Army Corps of Engineers
(USACE). This letter shall also act as your approved Authorization Certificate for impacts to the
protected riparian buffers per 15A NCAC 213 .0233. This Certification replaces the Certification
issued to you on May 16, 2006. In addition, you should obtain or otherwise comply with any other
required federal, state or local permits before you go ahead with your project including (but not limited
to) Erosion and Sediment Control, and Non-discharge regulations. Also, this approval to proceed with
your proposed impacts or to conduct impacts to waters as depicted in your application shall expire
upon expiration of the 404 or CAMA Permit.
This approval is for the purpose and design that you described in your application. If you change your
project, you must notify us and you may be required to send us a new application. If the property is sold,
the new owner must be given a copy of this Certification and approval letter and is thereby responsible for
complying with all conditions. If total fills for this project (now or in the future) exceed one acre of
wetland or 150 linear feet of stream, compensatory mitigation may be required as described in 15A
NCAC 2H.0506 (h). This approval requires you to follow the conditions listed in the attached
certification and any additional conditions listed below.
The Additional Conditions of the Certification are:
1. Impacts Approved
A01 na
401 Oversight/Express Review Permitting Unit
1650 Mail Service Center, Raleigh, North Carolina 27699-1650
2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604
Phone: [phone] / FAX [phone] / Internet: hlW://h2p.enr.state.no.us/nowetiands
40/Wade
Page 2 of 6
August 7, 2006
the following impacts are hereby approved as long as all of the otfifr specific and general
conditions of this Certification (or Isolated Wetland Permit) are met? No other impacts are
approved including incidental impacts:
Amount Approved nits Plan Location or Reference
404/Wetland 0.032 acres PCN a e 4 of 9
Stream - perennial 314 linear feet stream (252 linear feet permanent impacts, 62 linear feet
temporary impacts) PCN page 4 of 9
Buffer- Zone 1 37,904 (square ft. PCN page 8 of 9
Buffer - Zone 2 26,470 (square ft. PCN page 8 of 9
2. No Waste, Spoil, Solids, or Fill of Any Kind
No waste, spoil, solids, or fill of any kind shall occur in wetlands, waters, or riparian areas beyond
the footprint of the impacts depicted in the Pre-Construction Notification. All construction
activities, including the design, installation, operation, and maintenance of sediment and erosion
control Best Management Practices, shall be performed so that no violations of state water quality
standards, statutes, or rules occur.
3. Erosion and sediment control practices must be in full compliance with all specifications governing
the proper design, installation and operation and maintenance of such Best Management Practices in
order to protect surface waters standards:
a. The erosion and sediment control measures for the project must be designed, installed,
operated, and maintained in accordance with the most recent version of the North Carolina
Sediment and Erosion Control Planning and Design Manual.
b. The design, installation, operation, and maintenance of the sediment and erosion control
measures must be such that they equal, or exceed, the requirements specified in the most
recent version of the North Carolina Sediment and Erosion Control Manual. The devices
shall be maintained on all construction sites, borrow sites, and waste pile (spoil) projects,
including contractor-owned or leased borrow pits associated with the project.
c. Sufficient materials required for stabilization and/or repair of erosion control measures and
stormwater routing and treatment shall be on site at all times.
4. Sediment and Erosion Control Measures
Sediment and erosion control measures shall not be placed in wetlands or waters to the maximum
extent practicable. If placement of sediment and erosion control devices in wetlands and waters is
unavoidable, they shall be removed and the natural grade restored within six months of the date that
the Division of Land Resources has released the project;
5. Protective Fencing
The outside buffer, wetland or water boundary and along the construction corridor within these
boundaries approved under this authorization shall be clearly marked with orange warning fencing
(or similar high visibility material) for the areas that have been approved to infringe within the
buffer, wetland or water prior to any land disturbing activities to ensure compliance with 15A
NCAC 2B.0233 and GC 3404;
40/Wade
Page 3 of 6
August 7, 2006
6. Culvert Installation

Culverts required for this project shall be installed in such a manner that the original stream profiles
are not altered. Existing stream dimensions (including the cross section dimensions, pattern, and
longitudinal profile) must be maintained above and below locations of each culvert. Culverts shall
be designed and installed to allow for aquatic life movement as well as to prevent head cutting of
the streams. If any of the existing pipes are or become perched, the appropriate stream grade shall
be re-established or, if the pipes installed in a perched manner, the pipes shall be removed and re-
installed correctly.
Culvert(s) shall not be installed in such a manner that will cause aggradation or erosion of the
stream up or down stream of the culvert(s). Existing stream dimensions (including the cross section
dimensions, pattern and longitudinal profile) shall be maintained above and below locations of each
culvert.
Placement of culverts and other structures in waters, streams, and wetlands must be placed below
the elevation of the streambed by one foot for all culverts with a diameter greater than 48 inches,
and 20 percent of the culvert diameter for culverts having a diameter less than 48 inches, to allow
low flow passage of water and aquatic life. Design and placement of culverts and other structures
including temporary erosion control measures shall not be conducted in a manner that may result in
disequilibrium of wetlands or streambeds or banks, adjacent to or upstream and down stream of the
above structures. The applicant is required to provide evidence that the equilibrium shall be
maintained if requested in writing by DWQ.
The establishment of native, woody vegetation and other soft stream bank stabilization techniques
must be used where practicable instead of rip rap or other bank hardening methods. If rip-rap is
necessary, it shall not be placed in the stream bed, unless specifically approved by the Division of
Water Quality.
Installation of culverts in wetlands must ensure continuity of water movement and be designed
to adequately accommodate high water or flood conditions.
Upon completion of the project, the Applicant shall complete and return the enclosed "Certificate of
Completion" form to notify NCDWQ when all work included in the §401 Certification has been
completed. The responsible party shall complete the attached form and return it to the
401/Wetlands Unit of the NC Division of Water Quality upon completion of the project. Please
send photographs upstream and downstream of each culvert site to document correct installation
along with the Certificate of Completion form.
7. Written Stormwater Management Plan (Final Plan Needed) Required For Each Phase
A final, written stormwater management plan (including a signed and notarized Operation and
Maintenance Agreement) for each phase of the entire project shall be submitted to the 401
Oversight and Express Permitting Unit (2321 Crabtree Blvd., Suite 250, Raleigh, NC, 27604) and
the stormwater management plans shall be approved in writing by this Office before the impacts
for that particular phase may occur per Condition No. 4 in GC No. 3402. You have the option
of using the Express Review Program for expedited approval of these plans.. If you propose to
use the Express Review Program, remember to include the appropriate fee with the plan. Site-
specific stormwater management shall be designed to remove 85% TSS according to the latest
version of DWQ's Stormwater Best Management Practices manual at a minimum. Additionally,
in watersheds within one mile and draining to 303(d) listed waters, as well as watersheds that are
40/Wade
Page 4 of 6
August 7, 2006
classified as nutrient sensitive waters (NSW), water supply waters (%VS), trout waters (Tr), high
quality waters (HQW), and outstanding resource waters (ORW), the Division shall require that
extended detention wetlands, bio-retention areas, and ponds followed by forested filter strips
(designed according to latest version of the NCDENR Stormwater Best Management Practices
Manual) be constructed as part of the stormwater management plan when a site-specific
stormwater management plan is required.
Also, the stormwater management plan (as approved by the Wetlands Unit) shall be implemented
before any permanent building or other structure is occupied at the subject site.
The structural stormwater practices as approved by the Wetlands Unit as well as drainage patterns
must be maintained in perpetuity. No changes to the structural stormwater practices shall be
made without written authorization from the Division of Water Quality.
8. Diffuse Flow (No Review)
All constructed stormwater conveyance outlets shall be directed and maintained as diffuse flow at
non-erosive velocities through the protected stream buffers such that it will not re-concentrate
before discharging into a stream as identified within 15A NCAC 2B .0233 (5). If this is not
possible, it may be necessary to provide stormwater facilities that are considered to remove
nitrogen. This may require additional approval from this Office.
Mitigation:
9. Compensatory Mitigation Using the Ecosystem Enhancement Program (EEP)
Mitigation must be provided for the proposed impacts as specified in the table below. We
understand that you wish to make a payment to the Wetlands Restoration Fund administered by
the NC Ecosystem Enhancement Program (EEP) to meet this mitigation requirement. This has
been determined by the DWQ to be a suitable method to meet the mitigation requirement. Until
the EEP receives and clears your check (made payable to: DENR - Ecosystem Enhancement
Program Office), no impacts specified in this Authorization Certificate shall occur. The EEP
should be contacted at [phone] if you have any questions concerning payment into a
restoration fund. You have one month from the date of this approval to make this payment. For
accounting purposes, this Authorization Certificate authorizes payment into the Wetlands
Restoration Fund to meet the following compensatory mitigation requirement:
Compensatory Mitigation
Required River and Sub-basin Number
Stream 195 linear feet Neuse/03020201
Buffer Zone 1 55,284 (square feet Neuse/03020201
Buffer Zone 2 21,576 (square feet Neuse/03020201
10. Deed Notifications
Deed notifications or similar mechanisms shall be placed on all retained jurisdictional wetlands,
waters and protective buffers in order to assure compliance for future wetland, water and buffer
impact. These mechanisms shall be put in place prior to impacting any wetlands, waters and/or
buffers approved for impact under this Certification Approval and Authorization Certificate. A
sample deed notification can be downloaded from the 401 /Wetlands Unit web site at
40/Wade
Page 5 of 6
August 7, 2006
http://h2o.enr.state.nc.us/ncwetlands. The text of the sample deed notification may be modified
as appropriate to suit to this project; ,.
11. Sewer Systems
The project shall comply with 15A NCAC 2H.0219(i)(2)(G) and all other State, Federal and local
sewer system regulations.
12. Construction Stormwater Permit NCGO10000
Upon the approval of an Erosion and Sedimentation Control Plan issued by the Division of Land
Resources (DLR) or a DLR delegated local erosion and sedimentation control program, an
NPDES General stormwater permit (NCGO10000) administered by DWQ is automatically issued
to the project. This General Permit allows stormwater to be discharged during land disturbing
construction activities as stipulated by conditions in the permit. If your project is covered by this
permit [applicable to construction projects that disturb one (1) or more acres], full compliance
with permit conditions including the sedimentation control plan, self-monitoring, record keeping
and reporting requirements are required. A copy of this permit and monitoring report forms may
be found at http: //h2o. enr. state. nc. us/su/Forms Documents. htm. ;
13. Certificate of Completion
Upon completion of all work approved within the 401 Water Quality Certification or applicable
Buffer Rules, and any subsequent modifications, the applicant is required to return the attached
certificate of completion to the 401 Oversight/Express Review Permitting Unit, North Carolina
Division of Water Quality, 1650 Mail Service Center, Raleigh, NC, 27699-1650.
Violations of any condition herein set forth may result in revocation of this Certification and may result in
criminal and/or civil penalties. The authorization to proceed with your proposed impacts or to conduct
impacts to waters as depicted in your application and as authorized by this Certification, shall expire upon
expiration of the 404 or CAMA Permit.
If you do not accept any of the conditions of this Certification (associated with the approved wetland or
stream impacts), you may ask for an adjudicatory hearing. You must act within 60 days of the date that
you receive this letter. To ask for a hearing, send a written petition, which conforms to Chapter 150B of
the North Carolina General Statutes to the Office of Administrative Hearings, 6714 Mail Service Center,
Raleigh, N.C. 27699-6714. This certification and its conditions are final and binding unless you ask for a
hearing.
Any disputes over determinations regarding this Authorization Certificate (associated with the approved
buffer impacts) shall be referred in writing to the Director for a decision. The Director's decision is
subject to review as provided in Articles 3 and 4 of G.S. 150B.
40/Wade
Page 6 of 6
August 7, 2006
This letter completes the review of the Division of Water Quality under Secgon 401 of the Clean Water
Act and the Neuse riparian buffer protection rule as described within 15A NCAC 2B .0233. If you have
any questions, please telephone Cyndi Karoly or Ian McMillan at 919-733-1786.
Sincerely,
cr-ril "
Alan W. Klimek, P.E.
AWK/ijm
Enclosures: NCDWQ 401 WQC Summary of Permitted Impacts and Mitigation Requirements
GC 3374, GC3402
Certificate of Completion
cc: USACE Raleigh Regulatory Field Office
Eric Kulz, DWQ Raleigh Regional Office
DLR Raleigh Regional Office
File Copy
Central Files
Todd Preuninger, Withers and Ravenel Inc., 117 MacKenan Drive, Cary, NC 27511
Filename: 060961 Forty Wade(Wake)401_NBR
0F W ATF9 Michael F. Easley, Governor
QG
O?

? William G. Ross Jr., Secretary
?
- North Carolina Department of Environment and Natural Resources
? y
p Coleen H. Sullins, Director
Division of Water Quality
August 2, 2007
DWQ Project # 00-1449
Gaston County
CERTIFIED MAIL: RETURN RECEIPT REQUESTED
Mr. Julian Raul
Wexford Developers, LLC
100 Weston Estates Way
Cary, NC 27513
Subject Property: Forty Wade
Ut to Richlands Creek [030402, 27-33-11, C, NSW]
APPROV,kL OF STORMWATER MANAGEMENT PLAN
Dear Mr. Raul:
On June 15, 2007, the Division of Water Quality (DWQ) received the stormwater management plan for
Phase 11 of the Forty Wade project, with additional information received from you on July 5 and July 26,
2007. This Plan has been reviewed and addresses the requirements of Condition No. 7 of the 401 Water
Quality Certification issued for this project on August 7, 2006.
The structural stormwater practices as approved by DWQ as well as drainage patterns must be maintained
in perpetuity. No changes to the structural stormwater practices shall be made without written
authorization from the DWQ. Stormwater easements shall be recorded for a distance of at least 10 feet on
each side of all stormwater conveyances on all lots containing these structures including future access for
maintenance. The stormwater easements shall allow for the ability to maintain the structures, perform
corrective actions as described above and shall provide protection of the structures from potential
alternations by future property owners.
This letter completes the review of the DWQ under Section 401 of the Clean Water Act. If you have any
questions, please contact me at 919-715-3425.
Sincerely,
Annette Lucas, Environmental Engineer III
401 Oversight/Express Review Permitting Unit
CBK/aml
401 Oversight/Express Review Permitting Unit
1650 Mail Service Center, Raleigh, North Carolina 27699-1650
2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604
Phone: [phone] / FAX [phone] / Internet: h?://h2o.enr.state.nc.us/ncwetlands
No thCarolina
Nraturallrl
An Equal Opportunity/Affirmative Action Employer - 50% Recycled/10% Post Consumer Paper
Wexford Developers, LLC
Page 2 of 2
August 2, 2007
cc: Lauren Cobb, DWQ Raleigh Regional Office
USACE Raleigh Regulatory Field Office
File Copy
Central Files
Todd Preuninger, Withers & Ravenel, 111 MacKenan Drive, Cary, NC 27511
Filename: 060961 FortyWade(W ake)SW MP_Approval

200 South Tryon Street, Suite 1400 Charlotte, NC 28202
p, 704 376 1555 f, 704 376 7851 ?,J+www.calCjcneststone.corn
September 6, 2011
ColeJenest
& Stone
Shaping the Environment
Realizing the Possibilities
Ms. Lauren Witherspoon
North Carolina Division of Water Quality
Raleigh Regional Office
Surface Water Protection
1601 Mail Service Road
Raleigh, North Carolina 27699-1601
Re: 4054 - Post Wade (Lot 6)
DWQ Project #11-0731
Dear Ms. Witherspoon:
Charlotte
Raleigh
Wilmington
The following is a list of responses to comments received in the review of August 17,
2011:
Comments
1. Please locate the project boundaries on the most recent bound and published
Wake County soil survey and the USGS 1:24,000 topographic map for the project.
Land Planning
+
Landscape Architecture
Civil Engineering
Urban Design
Per our telephone discussion of September 1, 2011, we would be allowed to
use the USGS topographic map from the Withers & Ravenel submittal to the
Division of Water Quality [(DWQ) Project #06-0961].
2. Where the proposed storm water BMP outlet buffer impact is proposed, the plans
depict a wetland and the PCN form indicates that this is a non-jurisdictional stream
with a buffer. Is this correct? DWQ does not require protected buffers adjacent to
wetlands.
Per our telephone discussion of September 1, 2011, the buffers are depicted
correctly. Per DWQ Project #06-0961 and a drawing provided to us by DWQ,
we have revised our plans to depict an existing creek and wetlands.
3. Has DWQ made buffer determinations for this property? If so, please provide the
DWQ letter.
Per our telephone discussion of September 1, 2011, we would be allowed to
use the buffer determinations for this property from the Withers & Ravenel
submittal to the Division of Water Quality [(DWQ) Project #06-0961].
4. if the proposed storm water BMP would actually impact the Neuse River riparian
buffer, will the BMP (constructed wetland) provide 30% Nitrogen removal? Please
provide calculations demonstrating how the disspator pad is sized adequately. If
these two conditions are met then this activity is considered "allowable" according
to the buffer rules and mitigation would not be required.
Per our telephone discussion of September 1, 2011, no mitigation will be
required due to the fact that we will be providing 40%fl nitrogen removal at
BMP #4. A copy of the calculations for detention, water quality, and the
associated riprap apron for BMP #4 has been provided.
Ms. Lauren Witherspoon
September 6, 2011
Page 2
5. You have proposed a 10-ft wide pedestrian trail, however, the plans indicate that
the pedestrian trail impacts are for a approximately 30-ft wide construction corridor.
This office believes that a 30-ft construction corridor is not necessary. Please
explain why this is essential. If essential, update the Buffer Impact table in the PCN
(6b) to include temporary and permanent pedestrian trail impacts and provide a
planting plan for the temporary impacts associated with the pedestrian trail that fall
outside of the sewer easement.
Per our telephone discussion of September 1, 2011, we agreed to minimize
the impact to the Neuse River riparian buffer by only disturbing 5' on both
sides of the 10'-wide trail for a total of 20' wide disturbance. This width would
be considered permanent for future maintenance of the trail, the Buffer
Impact table as been updated to reflect reduction of the impacts.
6. The office believes that the pedestrian trail can be moved or reconfigured to avoid
and/or minimize impacts to Zone 1 of the riparian buffer. Please explain why Zone
1 impacts are necessary.
Per our telephone discussion of September 1, 2011, our proposed trial would
follow the existing sanitary sewer easement so that impacts to the riparian
buffers would be at a minimum.
If you should have any questions, concerns, or require any additional information,
please let me know.
Best regards,
COLEJENEST & STONE, P.A.
Robert . Hayes, El
sm m4
cc: Mr. Kelly C. Carter - PPI
Mr. Brian C. Jenest, RLA - CJS
Mr. W. Larry Lockhart, Jr., PE - CJS
Mr. Mark McAuley, PE, LEED AP BD+C - CJS
Mr. Luke C. Cagle, PE -- CJS
Mr. Casey P. Werner, El -- CJS
4b 4a
Basin -Post Basin 4-Pre
5P
Wetland 4
Subcat Reach on Link Drainage Diagram for 4054-BMP 4
Prepared by {enter your company name here}, Printed 8/15/2011
HydroCAD® 9.00 s/n 05796 © 2009 Hydro CAD Software Solutions LLC
4054-BMP 4
Prepared by {enter your company name here} Printed 8/15/2011
HydroCAD® 9.00 s/n 05796 @2009 HydroCAD Software Solutions LLC Page 2
Area Listing (all nodes)
Area CN Description
(acres) (su bcatch me nt-n u mbe rs)
5.140 55 Woods, Good, HSG B (4a, 4b)
0.760 61 >75% Grass cover, Good, HSG B (4b)
0.850 61 Pasture/grassland/range, Good, HSG B (4a)
5.770 70 Woods, Good, HSG C (4a)
2.220 74 >75% Grass cover, Good, HSG C (4b)
7.080 98 Paved parking, HSG B (4b)
21.820 TOTAL AREA
4054-BMP 4
Prepared by {enter your company name here} Printed 8/15/2011
HydroCAD® 9.00 s/n 05796 @2009 HydroCAD Software Solutions LLC Page 3
Soil Listing (all nodes)
Area Soil Subcatchment
(acres) Goup Numbers
0.000 HSG A
13.830 HSG B 4a, 4b
7.990 HSG C 4a, 4b
0.000 HSG D
0.000 Other
21.820 TOTAL AREA
4054-BMP 4
Prepared by {enter your company name here} Printed 8/15/2011
HydroCAD® 9.00 s/n 05796 @2009 HydroCAD Software Solutions LLC Page 4
Pipe Listing (all nodes)
Line# Node In-Invert Out-Invert Length Slope n Diam/Width Height
Number (feet) (feet) (feet) (ft/ft) (inches) (inches)
1 5P 378.00 376.02 33.0 0.0600 0.011 42.0 0.0
4054-BMP 4 Type 11 24-hr RAL - 10 yr, 24 hr Rainfall=5.04"
Prepared by {enter your company name here} Printed 8/15/2011
HydroCAD® 9.00 s/n 05796 @2009 HydroCAD Software Solutions LLC Page 5
Time span=0.00-120.00 hrs, dt=0.05 hrs, 2401 points
Runoff by SCS TR-20 method, UH=SCS
Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method
Subcatchment4a: Basin 4-Pre RunoffArea=10.910 ac 0.00% Impervious Runoff Depth= 1.53"
Flow Length=771' Tc=23.5 min CN=63 Runoff=15.62 cfs 1.395 of
Subcatchment4b: Basin 4-Post Runoff Area=10.910 ac 64.89% Impervious Runoff Depth=3.60"
Tc=5.0 min CN=87 Runoff=67.64 cfs 3.278 of
Pond 5P: Wetland 4 Peak Elev=383.11' Storage=71,491 cf Inflow=67.64 cfs 3.278 of
Outflow=14.76 cfs 3.209 of
Total Runoff Area = 21.820 ac Runoff Volume = 4.672 of Average Runoff Depth = 2.57"
67.55% Pervious = 14.740 ac 32.45% Impervious = 7.080 ac
4054-BMP 4 Type 11 24-hr RAL - 10 yr, 24 hr Rainfall=5.04"
Prepared by {enter your company name here} Printed 8/15/2011
HydroCAD® 9.00 s/n 05796 @2009 HydroCAD Software Solutions LLC Page 6
Summary for Subcatchment 4a: Basin 4-Pre
Runoff = 15.62 cfs @ 12.19 hrs, Volume= 1.395 af, Depth= 1.53"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr RAL - 10 yr, 24 hr Rainfall=5.04"
Area (ac) CN Description
4.290 55 Woods, Good, HSG B
5.770 70 Woods, Good, HSG C
0.850 61 Pasture/grassland/range, Good, HSG B
10.910 63 Weighted Average
10.910 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
13.0 100 0.0150 0.13 Sheet Flow, Sheet flow through grass
Grass: Short n=0.150 P2=2.28"
10.5 671 0.0450 1.06 Shallow Concentrated Flow,
Woodland Kv= 5.0 fps
23.5 771 Total
Subcatchment 4a: Basin 4-Pre
Hydrograph
-.. _-r--r-------y--rt--+--r--r----------y-- --+--r--r---1---1---I-----
17 ? Runoff
15.62 cfs -------'-- -- --+-- -- ----------+-- -- --+-- --' -- -- -
15 -------------!--!--! ---=11',2=h';r_?I=1Ir
I
14 -I 2F-
-- -----r--i--
13 -- --------I-- --------r--------I-- ---
12 -Rainfall--*-0417-
11 !''-- --------lii---lii--lii--III---III-----------10rnoff- a=1 4 arc
w 10 I I I I I I I I I I
w -- - ---I--
I -F --+ --r -- RunoffVolUme-74.395 atf
9
- -I---I --I-- --rt--+--r- r-------I- '??-- --
LL ?I I I I I I I I I I I __
o $
-- --+--------- -- I--Runoff D pth=1 15T
? I
7 J--1-- --L-- -- low'L ngtl -=77'11
6 '
I
5 -- ---I-- --T -- IT -- ! - - -- --! --!Tic =13.15 TI in-
4
CNN- 3
3 -- ---------J --L --L --L -- ----------L--L--+--+-- -------'-- --
I I I I I I I I I I I I I I I I I I I I
2
--
I I I I I I I I I I I I I I I I I I
1 I I I I I I I I I I I I I I I I I I I I
55 60 65 70 75 80 85 90 95 100 105 110 115 1
Time (hours)
4054-BMP 4 Type 11 24-hr RAL - 10 yr, 24 hr Rainfall=5.04"
Prepared by {enter your company name here} Printed 8/15/2011
HydroCAD® 9.00 s/n 05796 @2009 HydroCAD Software Solutions LLC Page 7
Summary for Subcatchment 4b: Basin 4-Post
[49] Hint: Tc<2dt may require smaller dt
Runoff = 67.64 cfs @ 11.95 hrs, Volume= 3.278 af, Depth= 3.60"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr RAL - 10 yr, 24 hr Rainfall=5.04"
Area (ac) CN Description
7.080 98 Paved parking, HSG B
0.760 61 >75% Grass cover, Good, HSG B
2.220 74 >75% Grass cover, Good, HSG C
0.850 55 Woods, Good, HSG B
10.910 87 Weighted Average
3.830 35.11 % Pervious Area
7.080 64.89% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet ) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 4b: Basin 4-Post
Hydrograph
---------- -- -------- ----- -- --------
I ---- -- ? Runoff
75
/ I -F T --r --T --r r 1---1 -1 T --r --T --i --1---1--
70 67.64 cfs I I I I I I
---1--J--1-- --L-- -- 1- -1-11.24=hr - -? -
65 1 1 1 y1p 1 -- yr
-- --r--1---1--r--r--r--r--r--r--r--1-- ?--r--r--r--r--r--1---1--r--
60 124 hr
1 1 1 1 1 1 1 1 1 1 1 1 1 1 ----1 ---- --
55 -- --1---1---1-- -- -- --r--' ---------- 1-1 -- Raiinfall-5.-1041'„
1 1
so 1 1 1 1 1 1 1 1 1 1 1 1 1
- -- tunoff-Area=10.010-alp
y __ --------------?--?- ?_ 1- I__---- _-'__+--------------?---
45 - - --Run
16 40 off Vo 1 u m'1e=3.278 of
LL 35 -- - 1-- --L- -- Runoff Ddpthy3.60"
1 1 1 1 1 1 1 1 1 1
30
- - --1---1-- --T -- T -- T -- --1---1---1--T -;--T-- -tC-15-x} Mi;t
2s
----------------- 'i'i'i---'i---'i-----------------
20 'i'i'i (W=a/;/
-- --r--1---1--r--r--r--r--r--1---1---1--r--r--t--r--r--r--1---1--r-
15
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
10
5
55 60 65 70 75 80 85 90 95 100 105 110 115 1
Time (hours)
4054-BMP 4 Type 11 24-hr RAL - 10 yr, 24 hr Rainfall=5.04"
Prepared by {enter your company name here} Printed 8/15/2011
HydroCAD® 9.00 s/n 05796 @2009 HydroCAD Software Solutions LLC Page 8
Summary for Pond 5P: Wetland 4
Inflow Area = 10.910 ac, 64.89% Impervious, Inflow Depth = 3.60" for RAL - 10 yr, 24 hr event
Inflow = 67.64 cfs @ 11.95 hrs, Volume= 3.278 of
Outflow = 14.76 cfs @ 12.12 hrs, Volume= 3.209 af, Atten= 78%, Lag= 9.7 min
Primary = 14.76 cfs @ 12.12 hrs, Volume= 3.209 of
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Peak Elev= 383.11' @ 12.12 hrs Surf.Area= 29,118 sf Storage= 71,491 cf
Plug-Flow detention time= 605.8 min calculated for 3.209 of (98% of inflow)
Center-of-Mass det. time= 592.9 min ( 1,389.7 - 796.9 )
Volume Invert Avail.Storage Storage Description
#1 380.50' 128,953 cf Custom Stage Data (Prismatic)Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (sq-ft) (cubic-feet) (cubic-feet)
380.50 25,660 0 0
381.00 26,314 12,994 12,994
382.00 27,639 26,977 39,970
383.00 28,967 28,303 68,273
384.00 30,329 29,648 97,921
385.00 31,734 31,032 128,953
Device Routing Invert Outlet Devices
#1 Primary 378.00' 42.0" Round Culvert
L= 33.0' RCP, square edge headwall, Ke= 0.500
Outlet Invert= 376.02' S= 0.06007' Cc= 0.900
n= 0.011 Concrete pipe, straight & clean
#2 Device 1 380.50' 2.2" Vert. Orifice/Grate C= 0.600
#3 Device 1 381.50' 2.5' long x 1.75' rise Sharp-Crested Rectangular Weir
2 End Contraction(s)
#4 Device 1 383.25' 60.0" x 60.0" Horiz. Orifice/Grate C= 0.600
Limited to weir flow at low heads
Primary OutFlow Max=14.68 cfs @ 12.12 hrs HW=383.10' (Free Discharge)
L =Culvert (Passes 14.68 cfs of 84.84 cfs potential flow)
2=Orifice/Grate (Orifice Controls 0.20 cfs @ 7.63 fps)
3=Sharp-Crested Rectangular Weir (Weir Controls 14.47 cfs @ 4.14 fps)
4=Orifice/Grate ( Controls 0.00 cfs)
4054-BMP 4 Type 11 24-hr RAL - 10 yr, 24 hr Rainfall=5.04"
Prepared by {enter your company name here} Printed 8/15/2011
HydroCAD® 9.00 s/n 05796 @2009 HydroCAD Software Solutions LLC Page 9
Pond 5P: Wetland 4
N
U
3
0
E
I I I I I I I I I I I I I I I I I I I I
? I I I I I I I I I I I I I I I I I I I I
14.76 cfs `. -? -1- -1-- 1 --? -1- I I 1 -1- -1-- ? -- ? 1 -1- I I 1 -1- -1-
--1---1-- --+-- --1-- --+-- --1---1-- -- --1---1-- -- --1---1-- --
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 I I I I I I I I
Hydrograph
---- - - -- ---- -- -- ------- -- -----
? Inflow
67.64 CfS -'I---I---'I-'I --'I---I-- I'I-- I'I --'---I---'I-- I'I-----I---I-- II--'---I---I---I ?Primary
1C o re=019?1a
' I 1111111
W _a - r - '? -1-c
1 I I I I I I I I I I I Peal-Elev-383.-
I IIIIIIIIII I
' --I-- ----I---I---11-- X11- II II I I 1 - _11?,4 f
- IIIStarage= 191 c
' --1- - - --r--1--y--t--r--1--y--t--r--1---1--rt--r--r--1--y--t--r--1--y--
, 1
1 I I I I I I I I I I I I I I I I I I I 1
'? 1 --1- - ---1---1--J--1--L--1--?--1--L--1---1--1--L--1---1--?--L--1---1--J--
1 I I I I I I I I I I I I I I I I I I I 1
--I- -------Y--r-------Y--r--
I
I I I I I I I I I I I I I I I I I I I I I I
1 I I I I I I I I I I I I I I I 1 ?--1---11--?--
i I
,I I ? I I_ T--T --T --I--T--T --T --I---I- 7--T--I---I- T--T--I --I- T--
I "? I I I I I I I I I I I I I I I I I I I I
--1- _L_------J--1--L----1--1-- L1L-1 L-1
Time (hours)
Pond 5P: Wetland 4
Stage-Discharge
100 105 110 115 1
? Primary
v
v
c
0
v
w
0 10 20 30 40 50 60 70 80 90 100
Discharge (cfs)
4054-BMP 4 Type 11 24-hr RAL - 2 yr, 24 hr Rainfall=3.46"
Prepared by {enter your company name here} Printed 8/15/2011
HydroCAD® 9.00 s/n 05796 @2009 HydroCAD Software Solutions LLC Page 10
Time span=0.00-120.00 hrs, dt=0.05 hrs, 2401 points
Runoff by SCS TR-20 method, UH=SCS
Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method
Subcatchment4a: Basin 4-Pre RunoffArea=10.910 ac 0.00% Impervious Runoff Depth=0.64"
Flow Length=771' Tc=23.5 min CN=63 Runoff=5.43 cfs 0.582 of
Subcatchment4b: Basin 4-Post Runoff Area=10.910 ac 64.89% Impervious Runoff Depth=2.15"
Tc=5.0 min CN=87 Runoff=41.35 cfs 1.952 of
Pond 5P: Wetland 4 Peak Elev=382.17' Storage=44,732 cf Inflow=41.35 cfs 1.952 of
Outflow=4.42 cfs 1.884 of
Total Runoff Area = 21.820 ac Runoff Volume = 2.534 of Average Runoff Depth = 1.39"
67.55% Pervious = 14.740 ac 32.45% Impervious = 7.080 ac
4054-BMP 4 Type 11 24-hr RAL - 2 yr, 24 hr Rainfall=3.46"
Prepared by {enter your company name here} Printed 8/15/2011
HydroCAD® 9.00 s/n 05796 @2009 HydroCAD Software Solutions LLC Page 11
Summary for Subcatchment 4a: Basin 4-Pre
Runoff = 5.43 cfs @ 12.21 hrs, Volume= 0.582 af, Depth= 0.64"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr RAL - 2 yr, 24 hr Rainfall=3.46"
Area (ac) CN Description
4.290 55 Woods, Good, HSG B
5.770 70 Woods, Good, HSG C
0.850 61 Pasture/grassland/range, Good, HSG B
10.910 63 Weighted Average
10.910 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
13.0 100 0.0150 0.13 Sheet Flow, Sheet flow through grass
Grass: Short n=0.150 P2=2.28"
10.5 671 0.0450 1.06 Shallow Concentrated Flow,
Woodland Kv= 5.0 fps
23.5 771 Total
Subcatchment 4a: Basin 4-Pre
Hydrograph
6-
5.4 noff
3 cfs
- ---F --! - Type 41-2,4-nxRALT yr--
5 24 hr
--------'?-- -?--?- a Rainfall-3.46,,
4 Runoff Area'=10.910 a'
w Vfll ume=0:58- of
?R
-un©ff l
3
LL Runoff Depth=0.64,,,
r--' rt--t--r--'r-- - -- - flo,w'Lengt0=117 x'
2 Tc=13.15 min
1 3
0 -----
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 165110115120
Time (hours)
4054-BMP 4 Type 11 24-hr RAL - 2 yr, 24 hr Rainfall=3.46"
Prepared by {enter your company name here} Printed 8/15/2011
HydroCAD® 9.00 s/n 05796 @2009 HydroCAD Software Solutions LLC Page 12
Summary for Subcatchment 4b: Basin 4-Post
[49] Hint: Tc<2dt may require smaller dt
Runoff = 41.35 cfs @ 11.96 hrs, Volume= 1.952 af, Depth= 2.15"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr RAL - 2 yr, 24 hr Rainfall=3.46"
Area (ac) CN Description
7.080 98 Paved parking, HSG B
0.760 61 >75% Grass cover, Good, HSG B
2.220 74 >75% Grass cover, Good, HSG C
0.850 55 Woods, Good, HSG B
10.910 87 Weighted Average
3.830 35.11 % Pervious Area
7.080 64.89% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet ) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 4b: Basin 4-Post
Hydrograph
46 -- -r--i -----i-- --+ -- T -- r -- T--------i-- --T -- T -- r--iT--i -----i-- -- ?Runoff
44 41.35 cfs ----------'-- --------------------'-- -- --------------'-- -
42 -- - --+----+--+--+--+--+--+--+--+ i--++--+ + - -+-
40 -- - r -- ------- --7--r--r--T-----rT'y-e-?1 ?4*r-)RAL', ? yr-
38
36 -- -------- --+--T-- -- ---------- -- --+-- -- ---1-24_hr-
34 -- -i --i --i-- --7--r--r- iT --li-----i-
Rai-rafall]-* 46"
32 -- ----- --------------- --------- - --- ---= - i y -
30 -- --?---?---?--?i-- i -- i --i --ice--it---il- - ? ?
28 -- ---------- --+--r--r--r-----Ful-off-rya=a
H 26 '
16 Run-off, Vol-ume#"52-if
24 ---------- --+--T-- -- --_
0 22 -- -- --+--r--r- r-- -- RUnoffDepth=25''
E 20
18 -- ---------- --+--T-- -- ---------- - __ r -i --
t?=
rm i-h
16 -- --r-------r--r--r--r--r----------r--r--r--r--
12 - --1---1---1--J--1--1--L--L--1---1---1--J--1--1--L-- - --d*8-7_
10 -- --r--i---i--r--r--+--r--r--i---i---i--r--r--+--r--r--r--i---i--r--
8 -- --'i --------'i-- -- 'i -- 'i -- 'i ---------- -- -- -- 'i -- 'i --'i -----'i-- i-
6 -- ---------- -- -- ---------------- -- -- -------------!
55 60 65 70 75 80 85 90 95 100 105 110 115 1
Time (hours)
4054-BMP 4 Type 11 24-hr RAL - 2 yr, 24 hr Rainfall=3.46"
Prepared by {enter your company name here} Printed 8/15/2011
HydroCAD® 9.00 s/n 05796 @2009 HydroCAD Software Solutions LLC Page 13
Summary for Pond 5P: Wetland 4
Inflow Area = 10.910 ac, 64.89% Impervious, Inflow Depth = 2.15" for RAL - 2 yr, 24 hr event
Inflow = 41.35 cfs @ 11.96 hrs, Volume= 1.952 of
Outflow = 4.42 cfs @ 12.35 hrs, Volume= 1.884 af, Atten= 89%, Lag= 23.6 min
Primary = 4.42 cfs @ 12.35 hrs, Volume= 1.884 of
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Peak Elev= 382.17' @ 12.35 hrs Surf.Area= 27,867 sf Storage= 44,732 cf
Plug-Flow detention time= 965.1 min calculated for 1.883 of (96% of inflow)
Center-of-Mass det. time= 946.7 min ( 1,758.3 - 811.6 )
Volume Invert Avail.Storage Storage Description
#1 380.50' 128,953 cf Custom Stage Data (Prismatic)Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (sq-ft) (cubic-feet) (cubic-feet)
380.50 25,660 0 0
381.00 26,314 12,994 12,994
382.00 27,639 26,977 39,970
383.00 28,967 28,303 68,273
384.00 30,329 29,648 97,921
385.00 31,734 31,032 128,953
Device Routing Invert Outlet Devices
#1 Primary 378.00' 42.0" Round Culvert
L= 33.0' RCP, square edge headwall, Ke= 0.500
Outlet Invert= 376.02' S= 0.06007' Cc= 0.900
n= 0.011 Concrete pipe, straight & clean
#2 Device 1 380.50' 2.2" Vert. Orifice/Grate C= 0.600
#3 Device 1 381.50' 2.5' long x 1.75' rise Sharp-Crested Rectangular Weir
2 End Contraction(s)
#4 Device 1 383.25' 60.0" x 60.0" Horiz. Orifice/Grate C= 0.600
Limited to weir flow at low heads
Primary OutFlow Max=4.42 cfs @ 12.35 hrs HW=382.17' (Free Discharge)
L =Culvert (Passes 4.42 cfs of 72.09 cfs potential flow)
2=Orifice/Grate (Orifice Controls 0.16 cfs @ 6.05 fps)
3=Sharp-Crested Rectangular Weir (Weir Controls 4.26 cfs @ 2.68 fps)
4=Orifice/Grate ( Controls 0.00 cfs)
4054-BMP 4 Type 11 24-hr RAL - 2 yr, 24 hr Rainfall=3.46"
Prepared by {enter your company name here} Printed 8/15/2011
HydroCAD® 9.00 s/n 05796 @2009 HydroCAD Software Solutions LLC Page 14
N
O
LL
Pond 5P: Wetland 4
Hydrograph

6 ------
1 _ - I

s --
' 41.35 -- -
--I 1 I -

---- - - -
-I -

- - - -
I 1

-I - --- -
I 1 - --
I I ------- -- ------- -- -------
I I I I I I I I I I -1
1--

-
1

Inflow
? Primary
44
42 .
,1 -1--
--- - -r--1-
---- --1- r-
------ t-
--- -r-
--- -1- r
- -
----- r -r
- -
----- r
- -r- t? r -1 r?]
-F©w?11eC? ??
i?7?IIC?tr
40
38 -I-- -

11
-1
,1 +---

1
--, --I--+-

11
--1---1- +-

1
- , - -+-

1
-, - ---+-

11
-1-- - -+--

11
- , --, I --

1
1
-1-Peak Elev=382.17'
36
34
32 --1--
,1 -1-- -
-- --1-
--1r
--- --1--L-
--1-- -
------ -1-
t-
--- -L-
-1r-
--- -1-- -
-1-- -
----- -1--L
-7--r
----- --1---1 -- J
-r
2-Gf
---- -- -
,I
I
I
1
30
1
--I - - r --- ----+- -+- -+- ---+- -+--+ -------+--+-------+--+-----I--+

28
26 ,1
--1-
- -
--
-
--1--T-
- -
-T-
-
- -
-
-I -- T -
-
-T--I
I- --I-- --r--1---1-- --r-- --1-- -
- - - - - -
24 '
22 --I
1 -
1
1 1 !
1
1 !
1 1 ! !
1 1 ! ! ! ! --1---1---1
1 1 1 1 1 1 1 1 1 1 1
20 - -I
18
,1 --1
--T
--1--T-
-T-
-T-
-1--T-
-T--r
--1---1--T--r--1---1--T--r--T--1--T-
16 1 -?- -
'1 1 ---1-
1 --1--?-
1 1 -!
1
1
1 1
1 1
1 1 1 1 1 1 1 1 1 1 1
14 ,
,I --1-- --1- --1--+- -+- -+- -1--+- -+--+ --1---1--+--r--1---1--+--+--1---1 -+-
12
10 --'- - -1- --1--L- -1- -L- -1-- - -1--L --1---1--L--L--1---1-- --L--1---1-- _

8
6

4.42cfs
r--r
--1--r-
-r- 1
-r-
-1--r- 1
-r--r
--r--1--r--r--1---1--r--r--r--r-r-
4
10 15 20 25
Time (hours)
Pond 5P: Wetland 4
Stage-Discharge
100 105 110 115 1
? Primary
v
v
c
0
v
W
0 10 20 30 40 50 60 70 80 90 100
Discharge (cfs)
4054-BMP 4 Type 11 24-hr RAL - 25 yr, 24 hr Rainfall=5.98"
Prepared by {enter your company name here} Printed 8/15/2011
HydroCAD® 9.00 s/n 05796 @2009 HydroCAD Software Solutions LLC Page 15
Time span=0.00-120.00 hrs, dt=0.05 hrs, 2401 points
Runoff by SCS TR-20 method, UH=SCS
Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method
Subcatchment4a: Basin 4-Pre RunoffArea=10.910 ac 0.00% Impervious Runoff Depth=2.16"
Flow Length=771' Tc=23.5 min CN=63 Runoff=22.80 cfs 1.966 of
Subcatchment4b: Basin 4-Post Runoff Area=10.910 ac 64.89% Impervious Runoff Depth=4.50"
Tc=5.0 min CN=87 Runoff=83.27 cfs 4.089 of
Pond 5P: Wetland 4 Peak Elev=383.57' Storage=84,990 cf Inflow=83.27 cfs 4.089 of
Outflow=31.53 cfs 4.020 of
Total Runoff Area = 21.820 ac Runoff Volume = 6.056 of Average Runoff Depth = 3.33"
67.55% Pervious = 14.740 ac 32.45% Impervious = 7.080 ac
4054-BMP 4 Type 11 24-hr RAL - 25 yr, 24 hr Rainfall=5.98"
Prepared by {enter your company name here} Printed 8/15/2011
HydroCAD® 9.00 s/n 05796 @2009 HydroCAD Software Solutions LLC Page 16
Summary for Subcatchment 4a: Basin 4-Pre
Runoff = 22.80 cfs @ 12.18 hrs, Volume= 1.966 af, Depth= 2.16"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr RAL - 25 yr, 24 hr Rainfall=5.98"
Area (ac) CN Description
4.290 55 Woods, Good, HSG B
5.770 70 Woods, Good, HSG C
0.850 61 Pasture/grassland/range, Good, HSG B
10.910 63 Weighted Average
10.910 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
13.0 100 0.0150 0.13 Sheet Flow, Sheet flow through grass
Grass: Short n=0.150 P2=2.28"
10.5 671 0.0450 1.06 Shallow Concentrated Flow,
Woodland Kv= 5.0 fps
23.5 771 Total
Subcatchment 4a: Basin 4-Pre
Hydrograph
25 -------'-- -- -- -- -- --------'-- -- -- -- -- --------'-- - ?Runoff
24 22.80 cfs - -
23 -'---' --'-- -- -- -- - --'-- -'-- -'- - -
22 ------- -- --T--T-- ----- ,per-IaT2 =h ' -2$y
21 -- --1---1---1--J--1-- --L-- --1---1---1--J--1--1--1--L--1---'---'--1--
24 hr-
20 r r r r i i r i r r r r r
19 -- --1---1---1--J--1--L--L-- --'---------'--L--1--1 --y'-?--'---'---'---,--
18 -- -- ------- --T --T --T -- ---------- -----T-Raf77fAII-5.-9D!?
17 -- --1---1---1--J--1--1--L--L----------L-- --1__1-------------!--
16 ' -- ------------- --T--T--T-------F?unoff-Area=90.01q-a-P
,i
w 14 -- -- --T
13 --r-- 'Runoff Volume:;I.-96-6 af-
'' -----------'---' ---------------------
012 -- -- --T--T--T--T-- - RU
- ndff' D T F',16"-
10 -- ----------+--+--+--r--+--------i-- - ---i- -
9 -- ------------------------------------ aoV1 qnq
8 -- -- -- --+-- -- -- - - --+ -CC --- -
7 -- -,---,---,---,--,--,---,---,--------------------'r1r3 =.ic?Ymn
6 -- --------- --+--+-- -- ----------+-- --+--+--L------w-'---+---
5 ''-- -'---'---'--------------------------------------GI?fr6-3-
4 -- -------'-- -- -- -- -- --------'-- -- --+-- -- -------- '-- -
3 ----, --, --, ---------------, --, --, --, -----,--
2 -----'-- -- --1-- -- --1---1---1--1-- --1-- -- --------'---
55 60 65 70 75 80 85 90 95 100 105 110 115 1
Time (hours)
4054-BMP 4 Type 11 24-hr RAL - 25 yr, 24 hr Rainfall=5.98"
Prepared by {enter your company name here} Printed 8/15/2011
HydroCAD® 9.00 s/n 05796 @2009 HydroCAD Software Solutions LLC Page 17
Summary for Subcatchment 4b: Basin 4-Post
[49] Hint: Tc<2dt may require smaller dt
Runoff = 83.27 cfs @ 11.95 hrs, Volume= 4.089 af, Depth= 4.50"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr RAL - 25 yr, 24 hr Rainfall=5.98"
Area (ac) CN Description
7.080 98 Paved parking, HSG B
0.760 61 >75% Grass cover, Good, HSG B
2.220 74 >75% Grass cover, Good, HSG C
0.850 55 Woods, Good, HSG B
10.910 87 Weighted Average
3.830 35.11 % Pervious Area
7.080 64.89% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet ) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 4b: Basin 4-Post
Hydrograph
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? Runoff
83.27 cfs - -- -- -- -- -- -- -- -- -- -- --
55 60 65 70 75 80 85 90 95 100 105 110 115 1
Time (hours)
4054-BMP 4 Type 11 24-hr RAL - 25 yr, 24 hr Rainfall=5.98"
Prepared by {enter your company name here} Printed 8/15/2011
HydroCAD® 9.00 s/n 05796 @2009 HydroCAD Software Solutions LLC Page 18
Summary for Pond 5P: Wetland 4
Inflow Area = 10.910 ac, 64.89% Impervious, Inflow Depth = 4.50" for RAL - 25 yr, 24 hr event
Inflow = 83.27 cfs @ 11.95 hrs, Volume= 4.089 of
Outflow = 31.53 cfs @ 12.07 hrs, Volume= 4.020 af, Atten= 62%, Lag= 7.1 min
Primary = 31.53 cfs @ 12.07 hrs, Volume= 4.020 of
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Peak Elev= 383.57' @ 12.07 hrs Surf.Area= 29,743 sf Storage= 84,990 cf
Plug-Flow detention time= 496.9 min calculated for 4.019 of (98% of inflow)
Center-of-Mass det. time= 488.5 min ( 1,279.2 - 790.7 )
Volume Invert Avail.Storage Storage Description
#1 380.50' 128,953 cf Custom Stage Data (Prismatic)Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (sq-ft) (cubic-feet) (cubic-feet)
380.50 25,660 0 0
381.00 26,314 12,994 12,994
382.00 27,639 26,977 39,970
383.00 28,967 28,303 68,273
384.00 30,329 29,648 97,921
385.00 31,734 31,032 128,953
Device Routing Invert Outlet Devices
#1 Primary 378.00' 42.0" Round Culvert
L= 33.0' RCP, square edge headwall, Ke= 0.500
Outlet Invert= 376.02' S= 0.06007' Cc= 0.900
n= 0.011 Concrete pipe, straight & clean
#2 Device 1 380.50' 2.2" Vert. Orifice/Grate C= 0.600
#3 Device 1 381.50' 2.5' long x 1.75' rise Sharp-Crested Rectangular Weir
2 End Contraction(s)
#4 Device 1 383.25' 60.0" x 60.0" Horiz. Orifice/Grate C= 0.600
Limited to weir flow at low heads
Primary OutFlow Max=30.25 cfs @ 12.07 hrs HW=383.55' (Free Discharge)
L =Culvert (Passes 30.25 cfs of 90.27 cfs potential flow)
2=Orifice/Grate (Orifice Controls 0.22 cfs @ 8.28 fps)
3=Sharp-Crested Rectangular Weir (Orifice Controls 19.45 cfs @ 5.17 fps)
4=Orifice/Grate (Weir Controls 10.58 cfs @ 1.78 fps)
4054-BMP 4 Type 11 24-hr RAL - 25 yr, 24 hr Rainfall=5.98"
Prepared by {enter your company name here} Printed 8/15/2011
HydroCAD® 9.00 s/n 05796 @2009 HydroCAD Software Solutions LLC Page 19
Pond 5P: Wetland 4
N
U
3
0
LL
Hydrograph
,, - - - - - +

' J- - -+ - - - - --

'
'
? Inflow
83.27CfS - -+I- -+
I - - - ; -- I
I r ---
- 4--
,-- ?Primary
ea-
;I --I-- - --- --'-- - - - -' - -'-- - - - - -'-- -Peak-E1ev=383.-57`-

,II I
---- -
,?I I
-?-. _
I
----
I
.r_--
I
I
---- -
I
----- - -

-+- -'I -

-- -'I-- -

---+- - -

-+- -,

- Storage= 4,990 of

I
-----I--+--+-------+---------?--
i t I
,I I
?'
31.53 cfs
,I I
I
I
-
I I I
I I
I I
---- -
I I I
I
I
- -
I I
I
I
- -
I I I
I I
I I
--- -
I I I
I
I
- -
I I
I
I
-
I I I I I I I I I I I I
I I I I I I I I I I I
I I I I I I I I I I I
-------4--+--------4 -- ------- --
I I I I I I I I I I I

,I

,I --

--
I -----

---- -
I I -+-

-+-
I --

- -
I ----

--- -
I I -+-

-+-
I -

-
I -------+--+-------+---------?--

-------4--+--------4 -- ------- --
I I I I I I I I I I I
Time (hours)
Pond 5P: Wetland 4
Stage-Discharge
100 105 110 115 1
? Primary
v
v
c
0
v
w
0 10 20 30 40 50 60 70 80 90 100
Discharge (cfs)
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
August 17, 2011
DWQ Project # 11-0731
Wake County
CERTIFIED MAIL: 7010 1870 0001 3428 0662
RETURN RECEIPT REQUESTED :C-- MINZr-7rl rp, C010j:aria:2>t & StO110
Post Wade Tract M2, LLC ??]1
Attn: Kelly Carter AUG 2
5435 Wade Park Blvd
Raleigh, NC 27605
PnOJ. NO. --
Subject: Post Parkside at Wade
UT to Richland Creek [030402, 27-21-(1.5), WS-IV, NSW]
REQUEST FOR MORE INFORMATION
Dear Ms. Carter:
On August 9, 2011, the Division of Water Quality (DWQ) received your application dated August 4, 2011 to fill
or otherwise impact 7,115 square feet of Zone I Neuse River basin protected riparian buffers and 12,920 square
feet of Zone 2 Neuse River basin protected riparian buffers associated with the construction of a stormwater BMP
outlet, a sanitary sewer line, and pedestrian trail. The DWQ has determined that your application was incomplete
and/or provided inaccurate information as discussed below. The DWQ will require additional information in
order to process your application to impact protected buffers on the subject property. Therefore, unless we
receive three copies of the additional information requested below, we will place this project on hold as
incomplete until we receive this additional information. If we do not receive the requested information your
project will be formally returned as incomplete. Please provide the following information so that we may
continue to review your project.
Additional Information Requested:
1. Please locate the project boundaries on the most recent bound and published Wake County soil survey and
the USGS 1:24,000 topographic map for the project.
2. Where the proposed stormwater BMP outlet buffer impact is proposed, the plans depict a wetland and the
PCN form indicates that this is a note jurisdictional stream with a buffer. Is this correct? DWQ does not
require protected buffers adjacent to wetlands.
3. Has DWQ made buffer determinations for this property? If so, please provide the DWQ letter.
NorthCarolina
Natimally
North Carolina Division of Water Quality Raleigh Regional Office Surface Water Protection Phone [phone] Customer Service
Internet: www.ncwatergvality.org 1628 Mail Service Center Raleigh, NC 27699-1628 FAX [phone]
An Equal opportunitylAffirmative Action Employer - 50% Recycled/10°/ Post Consumer Paper
Post Parkside at Wade
August 17, 2011
Page 2
4. If the proposed stormwater BMP would actually impact the Neuse River riparian buffer, will the BMP
(constructed wetland) provide 30% Nitrogen removal? Please provide calculations demonstrating how
the disspator pad is sized adequately, If these two conditions are met then this activity is considered
"allowable" according to the buffer rules and mitigation would not be required.
You have proposed a 10-ft wide pedestrian trail, however, the plans indicate that the pedestrian trail
impacts are for an approximately 30-ft wide construction corridor. This Office believes that a 30-ft
construction corridor is not necessary. Please explain why this is essential. If essential, update the Buffer
Impact table in the PCN (6b) to include temporary and permanent pedestrian trail impacts and provide a
planting plan for the temporary impacts associated with the pedestrian trail that fall outside of the sewer
easement.
6. This Office believes that the pedestrian trail can be moved or reconfigured to avoid and/or minimize
impacts to Zone 1 of the riparian buffer, Please explain why Zone I impacts are necessary.
Please submit this information within 30 calendar days of the date of this letter. Please send requested
information to DWQ Central Office, Attn: Karen Higgins, 1650 Mail Service Center, Raleigh, NC 27699-
1650. If we do not receive this requested information within 30 calendar days of the date of this letter, your
project will be returned and you will need to reapply with a new application and a new fee.
This letter only addresses the application review and does not authorize any impacts to wetlands, waters or
protected buffers. Please be aware that any impacts requested within your application are not authorized (at this
time) by the DWQ. Please call Ms Lauren Witherspoon at 919-791-4251 if you have any questions regarding or
would like to set up a meeting to discuss this matter.
Sincerely,
Danny Smith
Raleigh Rcgi al Office Supervisor
Surface Wat r Protection Section
cc: DWQ Raleigh Regional Office file copy
WeBSCaPe - 1650 Mail Service Center
Luke Cagle, PE - Cole Jenest & Stone, PA, 200 South Tryon, Suite 1400, Charlotte, NC 28202
Filename: 1 r-0731 Post Parkside at Wadc NHR On-Hold
r?
N
8
I

z Lo
o
f Q rr
t
% d, l ??
I ? ?g
7 I V)
Op. I0
43 01
too + T
% - r?+ x too
doom
's
OMM
H
I ? \
I
!
,,ooopl
f Q
f
f ?

0
?Cl
0
A
Q?0F WATEgg G
Y
o ?
Office Use Only:
Corps action ID no.
DWQ project no.
Form Version 1.3 Dec 10 2008
Pre-Construction Notification PCN Form
A. Applicant Information
1. Processing
1 a. Type(s) of approval sought from the
Corps:
F-1 Section 404 Permit El Section 10 Permit
1b. Specify Nationwide Permit (NWP) number: or General Permit (GP) number:
1 c. Has the NWP or GP number been verified by the Corps? ? Yes ? No
1 d. Type(s) of approval sought from the DWQ (check all that apply):
? 401 Water Quality Certification - Regular ? Non-404 Jurisdictional General Permit
? 401 Water Quality Certification - Express ® Riparian Buffer Authorization
1 e. Is this notification solely for the record
because written approval is not required? For the record only for DWQ 401
Certification:
? Yes ? No For the record only for Corps Permit:

? Yes ? No
1f. Is payment into a mitigation bank or in-lieu fee program proposed for mitigation
of impacts? If so, attach the acceptance letter from mitigation bank or in-lieu
fee program. N Yes ? No
1 g. Is the project located in any of NC's twenty coastal counties. If yes, answer 1 In
below. ? Yes ® No
1h. Is the project located within a NC DCM Area of Environmental Concern (AEC)? ? Yes N No
2. Project Information
2a. Name of project: Post Parkside at Wade
2b. County: Wake County
2c. Nearest municipality / town: Raleigh, NC
2d. Subdivision name: N/A
2e. NCDOT only, T.I.P. or state
project no: N/A
3. Owner Information
3a. Name(s) on Recorded Deed: Post Wade Tract M2, LLC
3b. Deed Book and Page No. 12723 Page No. 2644 and 12902 Page No. 2261
3c. Responsible Party (for LLC if
applicable): Kelly Carter
3d. Street address: 5435 Wade Park Blvd
3e. City, state, zip: Raleigh, NC 27605
3f. Telephone no.: [phone]
3g. Fax no.: [phone]
3h. Email address: [e-mail]
Page I of 11
PCN Form - Version 1.3 December 10, 2008 Version
4. Applicant Information (if different from owner)
4a. Applicant is: ? Agent ? Other, specify:
4b. Name:
4c. Business name
(if applicable):
4d. Street address:
4e. City, state, zip:
4f. Telephone no.:
4g. Fax no.:
4h. Email address:
5. Agent/Consultant Information (if applicable)
5a. Name: Luke C. Cagle, PE
5b. Business name
(if applicable): ColeJenest&Stone, PA
5c. Street address: 200 South Tryon, Suite 1400
5d. City, state, zip: Charlotte, NC 28202
5e. Telephone no.: 704-376-1555
5f. Fax no.: 704-376-7851
5g. Email address: [e-mail]
Page 2 of 11
PCN Form - Version 1.3 December 10, 2008 Version
B. Project Information and Prior Project History
1. Property Identification
1a. Property identification no. (tax PIN or parcel ID): 0774994214, 0774988716, 0774983627, 0784082366,
0744988191
1b. Site coordinates (in decimal degrees): Latitude: 35.8108 Longitude: - 78.7279
(DD.DDDDDD) (-DD.DDDDDD)
1 c. Property size: 22.28 acres
2. Surface Waters
2a. Name of nearest body of water (stream, river, etc.) to Richlands Creek
proposed project:
2b. Water Quality Classification of nearest receiving water: C; NSW - Impaired Waters
2c. River basin: Neuse River
3. Project Description
3a. Describe the existing conditions on the site and the general land use in the vicinity of the project at the time of this
application:
The proposed site has been mass graded with erosion control measures installed. The site is located adjacent to office
buildings and apartment homes. The RBC Center and Carter-Finley Stadium are located one block east of the proposed
development.
3b. List the total estimated acreage of all existing wetlands on the property:
0 ac
3c. List the total estimated linear feet of all existing streams (intermittent and perennial) on the property:
0 If
3d. Explain the purpose of the proposed project:
Mixed-Use Development
3e. Describe the overall project in detail, including the type of equipment to be used:
The proposed mixed-use development consist of 397 multifamily units and 20,000 sf of commercial development.
Construction will utilize equipment consistent with buiding, roadway, earthwork, and utilitiy line construction.
4. Jurisdictional Determinations
4a. Have jurisdictional wetland or stream determinations by the
Corps or State been requested or obtained for this property / ? Yes ® No ? Unknown
project (including all prior phases) in the past.
Comments:
4b. If the Corps made the jurisdictional determination, what type
? Preliminary ? Final
of determination was made?
4c. If yes, who delineated the jurisdictional areas? Agency/Consultant Company:
Name (if known): Other:
4d. If yes, list the dates of the Corps jurisdictional determinations or State determinations and attach documentation.
5. Project History
5a. Have permits or certifications been requested or obtained for ® Yes ? No ? Unknown
this project (including all prior phases) in the past?
5b. If yes, explain in detail according to "help file" instructions.
There is currently an open grading permit issued by the City of Raleigh for the subject property. However, a new grading
permit is currently in review by the City of Raleigh as the project scope has changed.
Page 3 of 11
PCN Form - Version 1.3 December 10, 2008 Version
6. Future Project Plans
6a. Is this a phased project? ? Yes ® No
6b. If yes, explain.
Page 4 of 11
PCN Form - Version 1.3 December 10, 2008 Version
C. Proposed Impacts Inventory
1. Impacts Summary
1 a. Which sections were completed below for your project (check all that apply):
? Wetlands ? Streams - tributaries ® Buffers
? Open Waters ? Pond Construction
2. Wetland Impacts
If there are wetland impacts proposed on the site, then complete this question for each wetland area impacted.
2a. 2b. 2c. 2d. 2e. 2f.
Wetland impact Type of jurisdiction
number - Type of impact Type of wetland Forested (Corps - 404, 10 Area of impact
Permanent (P) or (if known) DWQ - non-404, other) (acres)
Temporary T
W1 ? P ? T ? Yes ? Corps
? No ? DWQ
W2 ? P ? T ? Yes ? Corps
? No ? DWQ
W3 ? P ? T ? Yes ? Corps
? No ? DWQ
W4 ? P ? T ? Yes ? Corps
? No ? DWQ
W5 ? P ? T ? Yes ? Corps
? No ? DWQ
W6 ? P ? T ? Yes ? Corps
? No ? DWQ
2g. Total wetland impacts
2h. Comments:
3. Stream Impacts
If there are perennial or intermittent stream impacts (including temporary impacts) proposed on the site, then complete this
question for all stream sites impacted.
3a. 3b. 3c. 3d. 3e. 3f. 3g.
Stream impact Type of impact Stream name Perennial Type of jurisdiction Average Impact
number - (PER) or (Corps - 404, 10 stream length
Permanent (P) or intermittent DWQ - non-404, width (linear
Temporary (T) (INT)? other) (feet) feet)
S1 ? P ? T ? PER ? Corps
? INT ? DWQ
S2 ? P ? T ? PER ? Corps
? INT ? DWQ
S3 ? P ? T ? PER ? Corps
? INT ? DWQ
S4 ? P ? T ? PER ? Corps
? INT ? DWQ
S5 ? P ? T ? PER ? Corps
? INT ? DWQ
S6 ? P ? T ? PER ? Corps
? INT ? DWQ
3h. Total stream and tributary impacts
3i. Comments:
Page 5 of 11
PCN Form - Version 1.3 December 10, 2008 Version
4. Open Water Impacts
If there are proposed impacts to lakes, ponds, estuaries, tributaries, sounds, the Atlantic Ocean, or any other open water of
the U.S. then individually list all open water impacts below.
4a.
Open water
impact number -
Permanent (P)
or Temporary
(T) 4b.
Name of waterbody
(if applicable) 4c.

Type of impact 4d.

Waterbody type 4e.

Area of impact (acres)
01 ?P?T
02 ?P?T
03 ?P?T
04 ?P?T
4f. Total open water impacts
4g. Comments:
5. Pond or Lake Construction
If pond or lake construction proposed, then complete the chart below.
5a.

Pond ID 5b.

Proposed use or purpose of 5c.
Wetland Impacts (acres) 5d.
Stream Impacts (feet) 5e.
Upland
(acres)
number pond
Flooded
Filled
Excavated
Flooded
Filled
Excavated
Flooded
P1
P2
K Total
5g. Comments:
5h. Is a dam high hazard permit required?
? Yes ? No If yes, permit ID no:
5i. Expected pond surface area (acres):
5j. Size of pond watershed (acres):
5k. Method of construction:
Page 6 of 11
PCN Form - Version 1.3 December 10, 2008 Version
6. Buffer Impacts (for DWQ)
If project will impact a protected riparian buffer, then complete the chart below. If yes, then individually list all buffer impacts
below. If any impacts require mitigation, then you MUST fill out Section D of this form.
6a.
® Neuse ? Tar-Pamlico ? Other:
Project is in which protected basin? ? Catawba ? Randleman
6b. 6c. 6d. 6e. 6f. 6g.
Buffer impact
number - Reason Buffer Zone 1 impact Zone 2 impact
Permanent (P) for impact Stream name mitigation (square feet) (square feet)
or Temporary required?
T
Storm - ? Yes
B1 ®P ? T BMP Richlands Creek ® No 300 1,100
Outlet
Sanitary ? Yes
B2 ® P ? T Sewer Richlands Creek ® No 0 365
Cooridor
B3 ®P ? T Pedestrian
Trail Richlands Creek ®Nees 3,886 8,183
6h. Total buffer impacts 4,186 9,648
6i. Comments: A proposed BMP (Constructed Wetland) will outlet directly into adjacent non-jurisdictional stream. The
proposed sanitary sewer will tie into the public system that is located in the buffer in a public utility easement. A proposed
mulch, pedestrian trail will be installed as part of an overall master plan for the area.
D. Impact Justification and Mitigation
1. Avoidance and Minimization
1 a. Specifically describe measures taken to avoid or minimize the proposed impacts in designing project.
The BMP will outet directly to the adjacent creek as to minimize erosion and rutting at the the outlet. Due to existing
topography the existing 30" sanitary sewer line in the buffer is the only feasable tie-on for sanitary sewer.
1 b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques.
Erosion control plans will be reviewed and approved by the City of Raleigh prior to any construction.
2. Compensatory Mitigation for Impacts to Waters of the U.S. or Waters of the State
2a. Does the project require Compensatory Mitigation for ? Yes ® No
impacts to Waters of the U.S. or Waters of the State?
2b. If yes, mitigation is required by (check all that apply): ? DWQ ? Corps
? Mitigation bank
2c. If yes, which mitigation option will be used for this project? ? Payment to in-lieu fee program
? Permittee Responsible Mitigation
3. Complete if Using a Mitigation Bank
3a. Name of Mitigation Bank:
3b. Credits Purchased (attach receipt and letter) Type Quantity
Page 7 of 11
PCN Form - Version 1.3 December 10, 2008 Version
3c. Comments:
4. Complete if Making a Payment to In-lieu Fee Program
4a. Approval letter from in-lieu fee program is attached. ? Yes
4b. Stream mitigation requested: linear feet
4c. If using stream mitigation, stream temperature: ? warm ? cool ?cold
4d. Buffer mitigation requested (DWQ only): square feet
4e. Riparian wetland mitigation requested: acres
4f. Non-riparian wetland mitigation requested: acres
4g. Coastal (tidal) wetland mitigation requested: acres
4h. Comments:
5. Complete if Using a Permittee Responsible Mitigation Plan
5a. If using a permittee responsible mitigation plan, provide a description of the proposed mitigation plan.
6. Buffer Mitigation (State Regulated Riparian Buffer Rules) - required by DWQ
6a. Will the project result in an impact within a protected riparian buffer that requires
buffer mitigation? ? Yes ® No
6b. If yes, then identify the square feet of impact to each zone of the riparian buffer that requires mitigation. Calculate the
amount of mitigation required.

Zone 6c.
Reason for impact 6d.
Total impact
(square feet)
Multiplier 6e.
Required mitigation
(square feet)
Zone 1 3 (2 for Catawba)
Zone 2 1.5
6f. Total buffer mitigation required:
6g. If buffer mitigation is required, discuss what type of mitigation is proposed (e.g., payment to private mitigation bank,
permittee responsible riparian buffer restoration, payment into an approved in-lieu fee fund).
6h. Comments:
Page 8 of 11
PCN Form - Version 1.3 December 10, 2008 Version
E. Stormwater Management and Diffuse Flow Plan (required by DWQ)
1. Diffuse Flow Plan
1 a . Does the project include or is it adjacent to protected riparian buffers identified ® Yes ? No
within one of the NC Riparian Buffer Protection Rules?
1 b . If yes, then is a diffuse flow plan included? If no, explain why.
Comments: The discharge from the site will have 40% nitrogen removal, as it is ? Yes ® No
routed through a constructed wetland. There will be a rip-rap apron at the BMP
outlet to discharge directly into creek.
2. Stormwater Management Plan
2a . What is the overall percent imperviousness of this project? 42%
2b . Does this project require a Stormwater Management Plan? ® Yes ? No
2c. If this project DOES NOT require a Stormwater Management Plan, explain why:
2d . If this project DOES require a Stormwater Management Plan, then provide a brief, na rrative description of the plan:
The site is split into 3 drainage areas. Each drainage area will be routed through thre e respective constructed wetlands
to meet local requirements for peak dischage and pollution removal. Mitigation will be sought to buy-down for Nitrogen
removal from the City of Raleigh.
® Certified Local Government
2e . Who will be responsible for the review of the Stormwater Management Plan? ? DWQ Stormwater Program
? DWQ 401 Unit
3. Certified Local Government Stormwater Review
3a. In which local government's jurisdiction is this project? City of Raleigh
® Phase II
3b . Which of the following locally-implemented stormwater management programs ® NSW
? USMP
apply (check all that apply): ? Water Supply Watershed
? Other:
3c. Has the approved Stormwater Management Plan with proof of approval been ? Yes ? No
attached?
4. DWQ Stormwater Program Review
? Coastal counties
? HQW
4a . Which of the following state-implemented stormwater management programs apply ? ORW
(check all that apply):
? Session Law 2006-246
? Other:
4b . Has the approved Stormwater Management Plan with proof of approval been
attached? ? Yes ® No
5. DWQ 401 Unit Stormwater Review
5a . Does the Stormwater Management Plan meet the appropriate requirements? ? Yes ? No
5b . Have all of the 401 Unit submittal requirements been met? ? Yes ? No
Page 9 of 11
PCN Form - Version 1.3 December 10, 2008 Version
F. Supplementary Information
1. Environmental Documentation (DWQ Requirement)
1 a. Does the project involve an expenditure of public (federal/state/local) funds or the ? Yes ® No
use of public (federal/state) land?
1 b. If you answered "yes" to the above, does the project require preparation of an
environmental document pursuant to the requirements of the National or State ? Yes ? No
(North Carolina) Environmental Policy Act (NEPA/SEPA)?
1 c. If you answered "yes" to the above, has the document review been finalized by the
State Clearing House? (If so, attach a copy of the NEPA or SEPA final approval
letter.) ? Yes ? No
Comments:
2. Violations (DWQ Requirement)
2a. Is the site in violation of DWQ Wetland Rules (15A NCAC 2H .0500), Isolated
Wetland Rules (15A NCAC 2H .1300), DWQ Surface Water or Wetland Standards, ? Yes ® No
or Riparian Buffer Rules (15A NCAC 2B .0200)?
2b. Is this an after-the-fact permit application? ? Yes ® No
2c. If you answered "yes" to one or both of the above questions, provide an explanation of the violation(s):
3. Cumulative Impacts (DWQ Requirement)
3a. Will this project (based on past and reasonably anticipated future impacts) result in ? Yes ® No
additional development, which could impact nearby downstream water quality?
3b. If you answered "yes" to the above, submit a qualitative or quantitative cumulative impact analysis in accordance with the
most recent DWQ policy. If you answered "no," provide a short narrative description.
Any future development in the surrounding parcels will be submitted and reviewed by City of Raleigh and require all
applicable permits from the City and State. Therefore, there will be no impact beyond what the City of Raleigh and
NCDENR allows.
4. Sewage Disposal (DWQ Requirement)
4a. Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of wastewater generated from
the proposed project, or available capacity of the subject facility.
The sewage from the proposed development will tie in to the public sanitary sewer system and be treated by City of
Raleigh public waste water treatment plant.
Page 10 of 11
PCN Form - Version 1.3 December 10, 2008 Version
5. Endangered Species and Designated Critical Habitat (Corps Requirement)
5a. Will this project occur in or near an area with federally protected species or ? Yes ? No
habitat?
5b. Have you checked with the USFWS concerning Endangered Species Act ? Yes ? No
impacts?
?
Raleigh
5c. If yes, indicate the USFWS Field Office you have contacted.
? Asheville
5d. What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical
Habitat?
6. Essential Fish Habitat (Corps Requirement)
6a. Will this project occur in or near an area designated as essential fish habitat? ? Yes ? No
6b. What data sources did you use to determine whether your site would impact Essential Fish Habitat?
7. Historic or Prehistoric Cultural Resources (Corps Requirement)
7a. Will this project occur in or near an area that the state, federal or tribal
governments have designated as having historic or cultural preservation ? Yes ? No
status (e.g., National Historic Trust designation or properties significant in
North Carolina history and archaeology)?
7b. What data sources did you use to determine whether your site would impact historic or archeological resources?
8. Flood Zone Designation (Corps Requirement)
8a. Will this project occur in a FEMA-designated 100-year floodplain? ® Yes ? No
8b. If yes, explain how project meets FEMA requirements: Any impacts to the 100-yr floodplain will be permitted through the
City of Raleigh and FEMA.
8c. What source(s) did you use to make the floodplain determination? FEMA Floodmaps and surveyed floodlines.
Kelly C. Carter
?
Applican#IAgent's Printed Name pplteant/Agent s Signature i
ate
(Agent's si ature is valid only if an authorization letter from the applicant
is provided.)
Page 1 1 of 11
PCN Form - Version 1.3 December 10, 2008 Version
LEGEND

x

M
M

ColeJenest
& Stone
ILEV 97
ROSP 124
GROUND COVERS OTY
6 CARL 3,205
8 CHEG 2,437
21RIV 1,052
3 JUNE 1,136
9 KOSV 2,082
7 LOBC 2,422
10 NUPL 444
1 PONC 1,067
5 SAGL 646
4 SAUC 1,139
POST PARKSIDE AT WADE
BOTANICAL NAME
HIBISCUS MOSCHEUTOS
ILEX ABRA
ILEX VIRGINICA
ROSA PALUSTRIS
BOTANICAL NAME
CAREX LUPULINA
CHELONE GLABRA
IRIS VIRGINICA
JUNCUS EFFUSUS
KOSTELETZKYA VIRGINICA
LOBELIA CARDINALIS
NUPHAR LUTEA
PONTEDERIA CORDATA
SAGITTARIA LATIFOLIA
SAURURUS CERNUUS
+ + + + + + + PROPOSED SHRUBS
PROPOSED SOD
PROPOSED GROUNDCOVER
I I
DENUDED LIMITS
SHALLOW WATER/ LAND LINE
MAINTENANCE ACCESS EASEMENT
COMMON NAME
ROSE MALLOW
INKBERRY HOLLY
LUSTERLEAF HOLLY
SWAMP ROSE
COMMON NAME
HOP SEDGE
WHITE TURTLE-HEAD
BLUE FLAG IRIS
SOFTRUSH
SEASHORE MALLOW
CARDINAL FLOWER
SPATTERDOCK
PICKEREL WEED
LANCE-LEAFED ARROWHEAD
LIZARD'S TAIL
CONT
1 GAL
3 GAL
3 GAL
3 GAL
CONT
2" DIA X 5" PLUG 0 12" OC
2" DIA X 5" PLUG 0 12" OC
2" DIA X 5" PLUG 0 12" OC
2" DIA X 5" PLUG 0 12" OC
1 GALO 12" OC
1 GAL® 12" OC
2" DIA X 5" PLUG 0 12" OC
2" DIA X 5" PLUG 0 12" OC
2" DIA X 5" PLUG 0 12" OC
2" DIA X 5" PLUG 0 12" OC
SPAC
24" O.C. REMARKS
0-3" WATER DEPTH
4' O.C.
4' O.C.
36" O.C. 0-6" WATER DEPTH
SPAC REMARKS
6" O.C. 0-6" WATER DEPTH
6" O.C. 0-6" WATER DEPTH
12" O.C. REGULAR INUNDATION
6" O.C. 0-12" WATER DEPTH
24" O.C. 0-3" WATER DEPTH
6" O.C. REGULAR INUNDATION
36" O.C. 12-36" WATER DEPTH
12" O.C. REGULAR INUNDATION
24" O.C. 0-24" WATER DEPTH
24" O.C. 0-12" WATER DEPTH
3/CV8.1

BMP #4 PLANTING SCHEDULE
POST WADE TRACT M2, LLC
Project No. 4054 Issued 8.12.10 SCALE: 1"= 30'
0 15 30 60

RIPRAP APRON DESIGN
Charlotte
Post Parkside at Wade Raeigh
Wlmington
CJS PROJECT NO.: 4054 +ColeJenest
&Sth@
DATE: 07.01.11 BYE MRM
11REVISED: RVW WLL Land Planning + Landscape Architecture + Civil Engineering + Urban Design
2E
2D
r?
LD
a LO
5
0 10 15 20 25
D,, in feet
TO PREVENT SCOUR HOLE RIPRAP
ZONE APRON MATERIAL STONE DIAMETER LENGTH OF APRON DEPTH CLASS
1 Stone Filling (Fine) 6" 4 x (pipe diameter) 10" 1
2 Stone Filling (Light) 6" 6 x (pipe diameter) 12" 1
3 Stone Filling (Medium) 13" 8 x (pipe diameter 18" H
4 Stone Filling (Heavy) 23" 8 x (pipe diameter 30" 11
5 Stone Filling (Heavy) 23" 10 x (la e diameter 30" 11
6 Stone Filling (Heavy) 23" 12 x (pipe diameter) 30" 11
7 Special Study Required (Energy Dissipators, Stilling Basins, or Larger Size Stone
Apron width = pipe diameter + 0.4" (apron length)
Vel= [0.590"(diam)^213"(slope)^112]/n
FES # DIA
ft SLOPE
(ft/ft) n V
ft/s ZONE RIP RAP
CLASS LENGTH
(ft) WIDTH
ft) DEPTH
in)
BMP #4
OUTLET PIPE
3_S
0.005
0.013
7.40
1
I
t4
10
10
BMP #4 INLET
PIPE
3,5
0.0051
0.013
7.47
1
1
14
10
10
BMP #5 MFT
RIPE
2.5
0.02
0.024
6.40
1
1
10
7
10
xxx xx xxxx X000( XX #VALUE! #VALUE!
XXX Xx xxxx xxxx ## ## XX #VALUE! #VALUE!
K" xx XXXX X)= #i#!### XX #VALUE! #VALUE!
xxx xx xxxx X)= #####fi XX #VALUE! #VALUE!
xxx xX xxxx X000( ###k## XX #VALUE! #VALUE!
]KXx xx xxxx XXXX ## XX #VALUE! #VALUE!
xxx xx xxxx XX)OC ###### XX #VALUE! #VALUE!
xxx xX xxxx X000( #! ## XX #VALUE! #VALUE!
xxX xx xx)ry X)= #####it XX #VALUE! #VALUE!
source. "BanK and Channel Lining Procedures", New York Uepartment of I ransportation,
Division of Design and Construction, 1971.
Stormwater Wetland - BMP #4 "
Charlotte
Post Wade - Lot 6 Raleigh
CJS PROJECT NO.: 4054 +ColeJenest Wilmington
DATE: 06.17.11 BY: MRM & Stone
11REVISED: 08.15.11 RVW: WLL Land Planning + LandwApc Architcc[urc + Civil Enginecring + urban l3cmgn
NCDENR BMP Design Manual, July 2007
DRAINAGE AREA INFORMATION
Total Drainage Area to Pond = 10.91 Acres
Post-Developed Impervious Area* = 7.08 Acres, or 64.9 %
Designed PPE (Top of Shallow Water) = 380.5
WATER QUALITY VOLUME (WQv) and SURFACE AREA RE
Rv = runoff coefficient (Runoff/Rainfall)
WQv =Water Quality Volume (1-inch water quality control)
I = % Impervious
D = Plant Depth (12" Maximum)
("Simple Method" - Schueler) Rv = 0.05 + 0.009(1)
WQv = 1 "*Rv*A
12
Rv = 0.63
WQv = 0.58 Ac. Ft.
25111 Cubic Feet
D = 12 in.
This volume must be released over a minimum period of 24 hours.
Surface Area Required = SA/DA / 100 x Drainage Area: 25111 Square Feet
0.58 (in acres)
Surface Area Provided (at permanent pool): 0.59 Acres
Refer to Storage - Elevation Data Chart 25660 (in square feet)
ELEVATION TO HOLD WQv
Refer to Storage - Elevation Data Chart
CPv Elevation = 381.47
RELEASE RATES
Release Rate for WQ control:
Water quality control volume is to be released over a 3-day duration
WQ Release Rate = 0.097 cfs
ORIFICE SIZING FOR WATER QUALITY VOLUME
Avg Head = (Weir Elev - Perm Pool Elev) 0.62 ft
Use orifice equation
Heir Elev = 382.35
PPe = 380.50
Q = CA(2gh)^0.5
A= Q/(C*(2gh)^0.5)
A = 3.689 in^2
A = (¶*d^2)/4
d = ((A*4)/¶)^0.5
d = 2.17 inches
d = 2.20 inches
(3-Day Drawdown)
(Proposed)