20140124 Ver 1_401 Application_20140214

WITHERS & RAVENEL
ENGINEERS I PLANNERS I SURVEYORS
1410 COMMONWEALTH DRIVE, SUITE 1o1
WILMINGTON, NORTH CAROLINA, 28403
[phone]
FAX [phone]
TO: NC Division of Water Resources
512 N. Salisbury Street; 9`h Floor
Raleigh, NC 27604
WE ARE SENDING YOU
❑ Shop Drawings
❑ Copy of Letter
® Attached
❑ Prints
❑ Change order
201401"),;
DATE 2/6/14
JOB NO. 02130o86.00
ATTENTION
Ms. Karen Higgins
PHONE # [phone]
RE: Greenway Village at Lake Boone Trail Apts
401 WQC & Buffer Authorization PCN
o213oo86.00
401 WQC & Buffer Authorization PCN
1
2/6/14
t
❑ Under separate cover via
❑ Plans ❑ Samples
❑ Diskette ❑
the following items:
❑ Specifications
COPIES
DATE
NO.
DESCRIPTION
5
2/6/14
o213oo86.00
401 WQC & Buffer Authorization PCN
1
2/6/14
02130o86.00
CD of PCN
THESE ARE TRANSMITTED as checked below:
® For approval ❑ Approved as submitted
❑ For your use ❑ Approved as noted
❑ As requested ❑ Returned for corrections
❑ For review and comment ❑
❑ FOR BIDS DUE 20 ❑ PRINTS RETURNED AFTER LOAN TO US
❑ Resubmit
❑ Submit
❑ Return
copies for approval
copies for distribution
corrected prints
REMARKS:
COPYTO: File SIGNED: Troy Beas
ff enclosures are not as noted, kindly notify us at once.

WITHERS RAVEN EL
ENGINEERS I PLANNERS I SURVEYORS
February 6, 2014
US Army Corps of Engineers NC- Division of Water Resources
Regulatory Field Office Wetlands, Buffers, Streams Permitting Unit
Mr. Dave Shaeffer Ms. Karen Higgins
3331 Heritage Trade Drive 1650 Mail Service Center
Suite 105 Raleigh, North Carolina 27699
Wake Forest, NC 27587
Re: Greenway Village at Lake Boone Trail Apartments — NWP 29 PCN Submittal
W &R Project #0213oo86.00
Dear Mr. Shaeffer and Ms. Higgins,
On behalf of Grubb Palms, LLC, we are requesting authorization from the USACE to use NWP 29 for
70 if of permanent stream impacts and 78 if of temporary stream impacts for construction of the
proposed project. We are also requesting a 401 WQC from NCDWR for the above referenced impacts,
as well as a Buffer Authorization for 9,865 sq ft of permanent impacts to Neuse River riparian
buffers.
The project is ±24 acres in size and is located at 3599 Horton Street, in the southwestern quadrant of
the intersection of Lake Boone Trail and Horton Street in Raleigh, Wake County (Latitude:
35.812467 °N; Longitude: - 78.692197 0W). The project is located in the Neuse River basin (HUC
030202o1) and onsite waters drain to House Creek. The Water Quality Classification for House Creek
is C;NSW and the Stream Index Number is:27-33-13•
Proposed Project
The proposed project consists of construction of three multi - family apartment buildings, roads,
parking and utilities. There are two existing apartment buildings within the project area that are
dilapidated and will be demolished as part of the proposed construction of the Greenway Village at
Lake Boone Trail project.
Project History
W &R conducted a wetland delineation for the project site in September 2013. There are no wetlands
located within the subject property. There are five streams, including House Creek, within the
property. The Preliminary JD Request Packet and supporting information has been submitted with
this application to facilitate the Preliminary JD in conjunction with issuance of the NWP 29.
All onsite streams are depicted on either the USGS Quad or Wake Co. Soil Survey. Therefore buffer
subjectivity is not being contested and a formal Buffer Determination by NCDWR was not requested.
1410 Commonwealth Drive I Suite 1011 Wilmington, NC 28403 1 tel: [phone] fax: [phone]
www.withersravene[.com I License No. C -0832

Proposed Impacts
The proposed impacts consist of 70 if of permanent stream impacts, 78 if of temporary stream
impacts and 9,865 sq ft of permanent impacts to Neuse River riparian buffers for construction of the
proposed project.
The 70 if of permanent stream impacts will occur from construction of a perpendicular road crossing
(Impact #1) and replacement of the culverts at an existing crossing of House Creek (Impact #2). The
proposed perpendicular road crossing (Impact #1) is necessary in order to access the southern
portion of the site.
Impact #2 will result in 5 if of permanent stream impacts to House Creek for the removal and
replacement of the existing 25 if x 54" culverts at the existing entrance from Horton Street which
currently provides access to two existing apartment buildings which will be demolished. The
existing culverts will be replaced with 30 if x 54" culverts in order to provide a wider entrance to
provide safer entrance /exit to the development, as the current entrance is undersized for the
additional traffic that will occur from the increase in units /tenants.
The proposed 78 if of temporary stream impacts (Impacts #1 & 2) will occur from construction of rip -
rap dissipater pads below the culverts for the road crossings to reduce flow to non - erosive velocities
and protect against scouring. The rip -rap is a requirement by the NC Division of Land Quality as a
sediment and erosion control measure. The rip -rap dissipaters have been designed so that the top
of the installed rip -rap matches the pre- construction elevation of the stream bed (see Rip -Rap Apron
Detail on Maps A &B). This design allows for the temporary stream impact areas to continue
functioning as a natural stream by maintaining natural water depths and allowing for passage of
aquatic life. W &R understands that while the Corps considered this design to result in temporary
impacts, NCDWR still considers this design as permanent impacts, which will be reflected in the
NCDWR 401 QWC.
The proposed project will result in 9,865 sq ft of permanent riparian buffer impacts (Zone 1: 5,859 sq
ft; Zone 2: 4,006 sq ft) for construction of a road crossing (Impact #6 ), expansion of the existing
road crossing at the entrance to Horton Street (Impact #7) and stormwater outfalls (Impact #s 3, 4, &
5). See attached Buffer Impact Exhibits for details.
Avoidance and Minimization
Prior to site plan design, the applicant requested that a detailed wetland delineation be conducted
so that impacts to wetlands and "waters" could be minimized.
Proposed permanent stream impacts have been minimized to only those impacts necessary to
construct a perpendicular road crossing (Impact #1) to access the southern portion of the property
and extension of the culverts at an existing road crossing (Impact #2) to provide access to the
project from Horton Street. The site plan was designed to utilize the existing crossing of House
Creek to access the site to minimize impacts to House Creek. By only proposing to improve the
existing crossing (Impact #2), both temporary and permanent impacts to House Creek have been
minimized by eliminating the need for removal of the existing crossing and construction of a new
crossing to provide access from Horton Street. Also, to minimize impacts to House Creek at Impact
#2, a retaining wall will be constructed to stabilize fill and protect the culverts.
WITHERS RAVENEL Page 2 of
ENGINEERS I PLANNERS I SURVEYORS

Impacts to riparian buffers have been minimized to those necessary for the road crossings and
required stormwater outfalls. Please note that the proposed BMPs will achieve 30% nitrogen
removal and outfall discharges at non - erosive velocities, and therefore, level spreaders are not
required.
Mitigation
Streams
Since the proposed permanent stream impacts are less than 150 If, the applicant is not proposing
stream mitigation.
Buffers
All proposed buffer impacts are identified in the Neuse River Riparian Buffer Rules Table of Uses as
"Allowable" and therefore, buffer mitigation is not required.
Stormwater Management Plan & Diffuse Flow
The stormwater management plan consists of a combination of a level spreader (BMP #1), bio-
retention (BMP #2), constructed wetlands (BMP #3 &5) and a sand filter (BMP #5).
BMP #1 is a level spreader, which meets diffuse flow requirements. BMPs # 2, 3, 4 & 5 will provide
30% nitrogen removal and outfall discharges at non - erosive rates which meets diffuse now
requirements.
At this time, preliminary plans have been developed in anticipation of a City of Raleigh site plan
submittal. The City requires that potential stream and buffer impacts be approved prior to issuing
preliminary approvals. The preliminary approval from the City does not entitle the owner to begin
construction or begin clearing or grading operations on the subject property. Subsequent to
receiving the preliminary approval from the City, W &R will be preparing and submitting full
construction drawings for all BMPs shown herein. At that time, we will provide NCDENR with revised
supplement forms, details, and plans for each BMP. Should any of the information in this
application change during development of the construction drawings, we will apply for a permit
revision to ensure that the final permit matches the final drawings approved by the City.
The current request is for 70 if of permanent stream impacts, 78 if of temporary stream impacts and
9,865 sq ft of permanent impacts to Neuse River Riparian Buffers (see the attached maps and PCN
for details).
Please feel free to call if you have questions or require additional information.
S i n ce�re ly,�
Troy Beasley
Environmental Scientist
WITHERS RAVENEL Page 3 of
ENGINEERS I PLANNERS I SURVEYORS

Attachments:
• PCN Form
• Agent Authorization
• USGS Quad
• Wake County Soil Survey
• JD Supporting Information (Corps Application Only)
• Corps Stream Quality Forms (Corps Application Only)
• Stormwater Management Plan, BMP Info & Supplement Forms for Diffuse Flow (DWR
Application Only)
• Stream Impact Exhibits
• Buffer Impact Exhibits (DWR Application only)
WITHERS RAVENEL Page 4 of
ENGINEERS I PLANNERS I SURVEYORS

o�oF w a rF9o�
Office Use Only:
Corps action ID no.
DWQ project no.
Form Version 1.3 Dec 10 2008
Page 1 of 12
PCN Form — Version 1.3 December 10, 2008 Version
Pre - Construction Notification PCN Form
A. Applicant Information
1.
Processing
1 a.
Type(s) of approval sought from the
Corps:
®Section 404 Permit El Section 10 Permit
1 b.
Specify Nationwide Permit (NWP) number: 29 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.
❑ Yes
® No
1 g.
Is the project located in any of NC's twenty coastal counties. If yes, answer 1 In
below.
❑ Yes
® No
1 h.
Is the project located within a NC DCM Area of Environmental Concern (AEC)?
❑ Yes
® No
2.
Project Information
2a.
Name of project:
Greenway Village at Lake Boone Trail Apartments
2b.
County:
Wake
2c.
Nearest municipality / town:
Raleigh
2d.
Subdivision name:
2e.
NCDOT only, T.I.P. or state
project no:
3.
Owner Information
3a.
Name(s) on Recorded Deed:
Grubb Palms, LLC
3b.
Deed Book and Page No.
Book: 13187; Page: 2686
3c.
Responsible Party (for LLC if
applicable):
R. Gordon Grubb
3d.
Street address:
3700 Glenwood Ave, Suite 150
3e.
City, state, zip:
Raleigh, NC 27612
3f.
Telephone no.:
919 - 786 -9905
3g.
Fax no.:
3h.
Email address:
ggrubb @grubbventures.com
Page 1 of 12
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:
Troy Beasley
5b.
Business name
(if applicable):
Withers and Ravenel
5c.
Street address:
1410 Commonwealth Drive, Suite 101
5d.
City, state, zip:
Wilmington, NC 28403
5e.
Telephone no.:
910 - 256 -9277
5f.
Fax no.:
910 - 256 -2584
5g.
Email address:
tbeasley @withersravenel.com
Page 2 of 12
PCN Form — Version 1.3 December 10, 2008 Version

B. Project Information and Prior Project History
1. Property Identification
1 a. Property identification no. (tax PIN or parcel ID):
0795103418
1 b. Site coordinates (in decimal degrees):
Latitude: 35.812467 °N Longitude: - 78.692197 °W
(DD.DDDDDD) (- DD.DDDDDD)
1 c. Property size:
±24 acres
2. Surface Waters
2a. Name of nearest body of water (stream, river, etc.) to
House Creek (Stream Index # 27- 33 -13)
proposed project:
2b. Water Quality Classification of nearest receiving water:
C;NSW
2c. River basin:
Neuse - 03020201
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 project site is partially developed with two apartment buildings, access entrance from Horton Street, parking and
utilities. The remainder of the project site consists of undeveloped woodlands. The general land use in the vicinity
consists of a mixture of single family and multi - family residential land use, as well as commercial land use.
3b. List the total estimated acreage of all existing wetlands on the property:
N/A — there are no wetlands within the project area.
3c. List the total estimated linear feet of all existing streams (intermittent and perennial) on the property:
±4,157 If
3d. Explain the purpose of the proposed project:
The purpose of the proposed project is to construct a multi - family apartment complex.
3e. Describe the overall project in detail, including the type of equipment to be used:
The proposed project consists of the construction of three multi - family apartment buildings, roads, parking and utilities.
Standard commercial construction equipment and techniques will be used to construct the proposed project.
4. Jurisdictional Determinations
4a. Have jurisdictional wetland or stream determinations by the
Corps or State been requested or obtained for this property /
El Yes ®No El Unknown
project (including all prior phases) in the past?
Comments:
4b. If the Corps made the jurisdictional determination, what type
El Preliminary El 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.
Page 3 of 12
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.
No
Page 4 of 12
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
N/A
❑ Yes
❑ Corps
❑ No
❑ DWQ
2g. Total wetland impacts
2h. Comments: There are no wetlands within the proposed project.
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)
Impact #1
Culverted Road
UT to House
❑ PER
® Corps
6'
65 If
® P F1
Crossing
Creek
® INT
® DWQ
Impact #2
Culverted Road
House Creek
® PER
® Corps
15'
5 If
® P F1
Crossing
El INT
® DWQ
Total Permanent Stream Impacts
70 If
Impact #1
Rip -Rap Dissipater
UT to House
E] PER
® Corps
6'
33 If
E] P ®T
Creek
® INT
®DWQ
Impact #2
Culverted Road
House Creek
® PER
® Corps
15'
451f
E] P ® T
Crossing
E] INT
® DWQ
Total Temporary Stream Impacts
78 If
3h. Total stream and tributary impacts
148 If
3i. Comments: Rip -rap dissipaters will be constructed so that the top of the rip -rap will match the pre- construction elevation of
the stream bed in order to maintain natural flow and aquatic life passage.
Page 5 of 12
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
number
5b.
Proposed use or purpose
of pond
5c.
Wetland Impacts (acres)
5d.
Stream Impacts (feet)
5e.
Upland
(acres)
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 12
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) or
for
Stream name
mitigation
(square feet)
(square feet)
Temporary (T)
impact
required?
Impact #3
El P T
Bypass
Outfall
House Creek
®Nos
N/A
166 sq ft
Impact #4
El P T
Bypass
Outfall
House Creek
❑ Yes s
130 sq ft
440 sq ft
Impact #5
El P T
Bypass
Outfall
House Creek
❑ Yes s
N/A
286 sq ft
Impact #6
® P ❑ T
Road
Crossing
UT to House Creek
❑ Yes
® No
5,051 sq ft
3,114 sq ft
Impact #7
® P ❑ T
Road
Crossing
House Creek
❑ Yes
® No
678 sq ft
N/A
6h. Total buffer impacts
5,859 sq ft
4,006 sq ft
6i. Comments:
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.
Prior to site plan design, the applicant requested that a detailed wetland delineation be conducted so that impacts to wetlands
and "waters" could be minimized.
Proposed permanent stream impacts have been minimized to only those impacts necessary to construct a perpendicular road
crossing (Impact #1) to access the southern portion of the property and extension of the culverts at an existing road crossing
(Impact #2). The site plan was designed to utilize the existing crossing of House Creek to access the site to minimize impacts
to House Creek. By only proposing to improve the existing crossing (Impact #2), both temporary and permanent impacts to
House Creek have been minimized by eliminating the need for removal of the existing crossing and construction of a new
crossing to provide access from Horton Street.
Impacts to riparian buffers have been minimized to those necessary for the road crossings and required stormwater BMP
outfalls. Please note that the proposed BMPs with outfalls within the riparian buffers will achieve 30% nitrogen removal and
outfall discharges at non - erosive velocities, and therefore, level spreaders are not required for these BMPs.
1 b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques.
Silt fencing will be installed around all disturbed areas to prevent sediment from escaping into downstream waters.
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
El Payment to in -lieu fee program
project?
❑ Permittee Responsible Mitigation
Page 7 of 12
PCN Form — Version 1.3 December 10, 2008 Version

3.
Complete if Using a Mitigation Bank
3a.
Name of Mitigation Bank:
3b.
Credits Purchased (attach receipt and letter)
Type
Quantity
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 8of12
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 proposed BMPs will result in 30% nitrogen removal and outfall flow
at non - erosive velocities and level spreaders are not required. The Stormwater
Management Plan and BMP Supplement Forms have been provided as and
Appendix.
At this time, preliminary plans have been developed in anticipation of a City of
Raleigh site plan submittal. The City requires that potential stream and buffer
impacts be approved prior to issuing preliminary approvals. The preliminary
® Yes ❑ No
approval from the City does not entitle the owner to begin construction or begin
clearing or grading operations on the subject property. Subsequent to receiving the
preliminary approval from the City, we will be preparing and submitting full
construction drawings for all BMPs shown herein. At that time, we will provide
NCDENR with revised supplement forms, details, and plans for each BMP. Should
any of the information in this application change during development of the
construction drawings, we will apply for a permit revision to ensure that the final
permit matches the final drawings approved by the City.
2.
Stormwater Management Plan
2a.
What is the overall percent imperviousness of this project?
±14 %
2b.
Does this project require a Stormwater Management Plan?
® Yes El
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, narrative description of the plan:
The proposed stormwater management plan consists of a combination of a level spreader
(BMP #1), bio- retention (BMP
#2), constructed wetlands (BMP #s 3 &5) and a sand filter (BMP #4). The stormwater
management plan will be approved
by the City of Raleigh. Upon issuance of approval, a copy will be provided to DWR.
® 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
4a.
Which of the following state - implemented stormwater management programs apply
❑ Coastal counties
Page 9 of 12
PCN Form — Version 1.3 December 10, 2008 Version

Page 10 of 12
PCN Form — Version 1.3 December 10, 2008 Version
(check all that apply):
❑ HQW
❑ 0 R
❑ Session Law 2006 -246
❑ Other:
4b.
Has the approved Stormwater Management Plan with proof of approval been
❑ Yes
❑ No
attached?
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
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
❑ Yes
❑ No
letter.)
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.
The proposed project is located within a heavily developed area of Raleigh, and is not anticipated to be
a catalyst for
future development.
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.
City of Raleigh sanitary sewer
Page 10 of 12
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?
E] 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?
W &R reviewed the NC Natural Heritage Program GIS data to identify if there were any known occurrences of endangered
species on or near the proposed project. The review of the NHP GIS data did not identify any recent occurrences of
federally listed threatened /endangered species or critical habitat on the subject property or within 1.0 miles of the project.
Furthermore, there were no federally listed species or potential habitat observed within the proposed project.
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?
There are no waters within Wake County classified as EFH.
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?
W &R reviewed the NC State Historic Preservation Office's online database, located at: http: / /gis.ncdcr.gov /hpoweb /, to
determine if there were any known historic or cultural resources within or in the vicinity of the proposed project. The
database review did not identify any known resources within or the proposed project or within 0.5 miles. Furthermore,
there were no historic structures located within the project site.
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:
A "No Rise" Flood Study was completed for the project and has been reviewed by the City of Raleigh and the City of
Raleigh has no comments and will issue approve the No Rise Flood Study as part of the Site Plan Approval. The No Rise
Flood Study was based on the CLOMR the City of Raleigh completed for the House Creek Greenway which was
approved and the greenway has been constructed. Approval of the "No Rise Flood Study" by the City of Raleigh will
certify that the proposed project will result in "No Rise" of the floodplain elevation satisfies FEMA requirements.
8c. What source(s) did you use to make the floodplain determination? www.ncfloodmaps.com
Troy Beasley — W &R
���
2/6/14
Authorized Agent
Applicant /Agent's Printed Name
Date
Applicant /Agent's Signature
Page 11 of 12
PCN Form — Version 1.3 December 10, 2008 Version

AGENT AUTHORIZATION FORM

WITHERS & RAVEN EL
ENGINEERSI PLANNERS I SURVEYORS
AUTHORITY FOR APPOINTMENT OF AGENT
The undersigned Ownerc-ill" ocl t Lit--(Client) does hereby appoint Troy Beasley 1
Withers & Ravenel Inc. as his, her, or it's agent for the purpose of petitioning the appropriate
local, state and federal environmental regulatory agencies (US Army Corps of Engineers, NC
Division of Water Quality, NC Division of Coastal Management, etc.) for: a) review and approval
of the jurisdictional boundaries of onsite jurisdictional areas (wetlands, surface waters, riparian
buffers, etc.) and/or; b) preparation and submittal of appropriate environmental permit
applications /requests for the Greenway Village at Lake Boone Trail project.
The Client does hereby authorize that said agent has the authority to do the following acts on
behalf of the owner:
(1) To submit appropriate requests /applications and the required supplemental
materials;
(2) To attend meetings to give representation on behalf of the Client.
(3) To authorize access to subject property for the purpose of environmental
review by appropriate regulatory agencies.
This authorization shall continue in effect until completion of the contracted task or termination by
the Client.
Agent's Name, Address & Telephone:
Troy Beasley / Withers & Ravenel, Inc.
1410 Commonwealth Drive, Suite 101
Wilmington, NC 28403
Date: lb l
Signature of Client: 4� VII Wfir
Name - Print) f (Title) /
ielymw'ilm /Y-L4,�
(Signature)
LCCI 04prie.1"
Tel. [phone] �! 6 6 V1OGd L .
Mailing Address
N� b Z
City State Zip
Phone. / r% 78 � o5-
Email: rfA it G 7VU IL V4+
115 MacKenan Drive 1 Cary, NC 2/511 1 tel.: [phone] fax: [phone] www.withersrovenel.com 1
License No. C -0832
1410 Commonwealth Drive 1 Suite 101 I Wilmington, NC 28403 J tel: [phone] fax: 910,256.2584
7011 Albert Pick Road 1 Suite G 1 Greensboro, NC 27409 1 tel: [phone] fax: 919,467.6008

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No.
Revision
Date
B
1
COR 1st REVIEW COMMENTS
10/23/13
TLM
LGS
02130086.00
� ] _ —`
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4728
—
Designer
TLM
Scale
1 " =50'
Drawn By
Date
TLM
OS 01 13
Checked By
Job No.
LGS
02130086.00
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CONSTRUCTED
_
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SURFACE AREA =
1,750 SF \ —
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GREENWAY VILLAGE AT LAKE BOONE
Ciry ��i Raleigh N'.�kry C��uniy Noah Carolina
STORMWATER MANAGEMENT PLAN
��� R p �♦
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NORTH ;- _. a 9f•. �_
C ¢a�1
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Zti
iiy' � Q-. rte.
so o RAPHIC SCAL o goo f�����'C'1` � ���) p -2--3 � � )
ALL CONSTRUCTION SHALL BE IN
ACCORDANCE WITH ALL CITY OF RALEIGH
STANDARDS & SPECIFICATIONS
ENGINEERS I PLANNERS I SURVEYORS
111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] www.withersravenel.com License No. C -0832
Sheet No.
C 1.2

BMP 1

AN'MA,
of xar�,�
NCDENR
A Y
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION
APPLICATION FORM
LEVEL SPREADER - VEGETATED FILTER STRIP (LS -VFS) SUPPLEMENT
This form must be completely filled out, printed, initialed, and submitted.
1. PROJECT INFORMATION
Project name
Greenway Village al Lake Boone Trail
Contact name
Hunter Freeman
Phone number
919.469.3340
Date
February4, 2014
Drainage area number
1
!I. DESIGN INFORMATION
The purpose of the LS -VFS
Butler Rule: Diffuse Flow
Stormwater enters LS -VFS from
The drainage area
Type of VFS
Engineered filter sirip tgraded & sodded, slope <8%)
Explanation of any "Other" responses above
If Stormwater Enters the LS -VFS from the Drainage Area
Drainage area
98.446 if
Impervious surface area
20,674 ft.
Percent impervious
21.00 %
Rational C coefficient
0.61
Peak flow from the 1 in /hr storm
1.38 cfs
Time of concentration
5.00 min
Rainfall intensity, 1 0-yr storm
722 in /hr
Peak flow from the 10 -yr storm
9.95 cfs
Design storm
1 inchlhour storm
Maximum amount of flow directed to the LS -VFS
1.6 cfs
Is a flow bypass system going to be used?
Y (Y or N)
Explanation of any "Other" responses above
If Stormwater Enters the LS -VFS from a BMP
Do not complete this section of the form.
Type of BMP
Pick one:
Peak discharge from the BMP during the design storm
cfs
Peak discharge from the BMP during the 10 -year storm
cfs Do not complete this section of the form.
Maximum capacity of a 100 -foot long LS -VFS
10 cfs
Peak flow directed to the LS -VFS
cfs Do not complete this section of the form.
Is a flow bypass system going to be used?
(Y or N)
Explanation of any "Other" responses above
\ CA'��
4' f • �
., I SEAL
Q2E-942
Form SW401 - LS -VFS - 29June2012 - Rev. 10
page 1 of 3

LS -VFS Design
Forebay surface area
50
sq ft
Forebay is adequately sized.
Depth of forebay at stormwater entry point
6
in
Depth of forebay at stormwater exit point
6
in
Depth is appropriate.
Feet of level lip needed per cis
10
fucfS
Computed minimum length of the level lip needed
16
ft
Length of level lip provided
16
ft
Width of VFS
30
ft
Elevation at downslope base of level lip
305.00
fmsl
Elevation at the end of the VFS that is farthest from the LS
304.80
fmsl
Slope (from level lip to the end of the VFS)
0.67
%
Are any draws present in the VFS?
N
(Y or N)
OK
Is there a collector swale at the end of the VFS?
N
(Y or N)
Bypass System Design (if applicable)
Is a bypass system provided?
Y
(Y or N)
Is there an engineered flow splitting device?
Y
(Y or N)
Please provide plan details of flow splitter & supporting calcs.
Dimensions of the channel (see diagram below):
M
It
B
h
W
ft
y (flow depth for 10 -year storm)
fl
freeboard (during the 10 -year storm)
fl
Peak velocity in the channel during the 10 -yr storm
fusee
Channel lining material
Pick one:
Does the bypass discharge through a wetland?
N
(Y or N)
Does the channel enter the stream at an angle?
Y
(Y or N)
Explanation of any "Other" responses above
Pipe Bypass- 24" HOP
W
i
i
i
B
Form SW401 - LS -VFS - 29June2012 - Rev. 10 page 2 of 3

III. REQUIRED ITEMS CHECKLIST
EDIT Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will result
in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to indicate the
following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a requirement has not been met,
attach justification.
Requried Item:
1. Plans (1" - 50' or larger) of the entire site showing:
- Design at ultimate build -out,
Off -site drainage (if applicable),
Delineated drainage basins (include Rational C coefficient per basin),
Forebay (if applicable),
High flow bypass system,
Maintenance access,
Proposed drainage easement and public right of way (ROW), and
Boundaries of drainage easement.
2. Plan details (1" = 30' or larger) for the level spreader showing:
- Forebay (if applicable),
High flow bypass system,
One foot topo lines between the level lip and top of stream bank,
Proposed drainage easement, and
Design at ultimate build -out.
3. Section view of the level spreader (1" = 20' or larger) showing:
- Underdrain system (if applicable),
Level lip,
Upslope channel, and
Downslope filter fabric.
4. Plan details of the flow splitting device and supporting calculations (if applicable).
5. A construction sequence that shows how the level spreader will be protected from
sediment until the entire drainage area is stabilized.
6. If a non - engineered VFS is being used, then provide a photograph of the VFS showing
that no draws are present.
7. The supporting calculations.
8. A copy of the signed and notarized operation and maintenance (0 &M) agreement.
s Page or plan sheet number and any notes:
L1.7,
n
AM
rst,
!iFA.
,6T d tar-- -
Ar A Lbvu- Dbi*
Form SW401 - LS -VFS - 29J! ine2012 - Rev. 10 page 3 of 3

Project Name: Palms Apartments
City /State: Raleigh, NC
STORMWATER BMP - LSNFS (40% TSS Removal & 30% TN Removal)
Land Use
Area
(ac)
% IA
Imp. Area
(ac)
Impervious
0.22
100
0.22
Open Space
1.02
0
0.00
Offsite ROW
1.03
25
0.26
Totals
2.26
0.47
Total % Impervious Surface Area =
Composite C Calculation
20.9
C % x C
Impervious Fraction
20.91%
0.98 0.20
Open Space Fraction
79.09%
0.63 0.50
Peak Flow Calculation
Q = c * I * A
Composite C = 0.70
C = 0.70
1 = 1.00 in /hr
A = 2.26 acres
Q = 1.59 cfs
Use a 16' Level Spreader Lip, 30' Vegetated Filter Strip
BMP 1 - Level Spreader
Project #: 2130086
Date: 5- Feb -14
BMP #1

BMP 2

Permit Number:
(to be provided by DWQ)
A""NA
WIPLI AipF W A T�rq¢y
NCDENR p Y
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
BIORETENTION CELL SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part III) must be printed, filled out and submitted along with all of the required information.
1. PRWFCT INFORMATION
Project name Greenway Village at Lake Boone Trail
Contact name Hunter Freeman
Phone number 919.469 -3340
Date February 4, 2014
Drainage area number 2
If. DESIGN INFORMATION
Y (Y or N)
Site Characteristics
Drainage area
36,590 ft
Impervious area
18,734 ft
Percent impervious
51.2% %
Design rainfall depth
1.0 inch
Peak Flow Calculations
Is pre /post control of the 1 -yr, 24 -hr peak flow required?
Y (Y or N)
1 -yr, 24 -hr runoff depth
2.83 in
1 -yr, 24 -hr intensity
0.117916667 in/hr
Pre - development 1 -yr, 24 -hr peak flow
0.080 ft$ /sec
Post - development 1 -yr, 24 -hr peak flow
0.080 0 /sec
Pre /Post 1 -yr, 24 -hr peak control
0.000 ft3 /sec
Storage Volume: Non -SA Waters
Minimum volume required
1,557.0 ft3
Volume provided
2,255.0 ft
OK
Storage Volume: SA Waters
1.5" runoff volume
ft
Pre - development 1 -yr, 24 -hr runoff
ft3
Post - development 1 -yr, 24 -hr runoff
ft3
Minimum volume required
0 ft
Volume provided
ft
Cell Dimensions
Ponding depth of water
12 inches
OK
Ponding depth of water
1.00 ft
Surface area of the top of the bioretention cell
1,967.0 ft2
OK
Length:
Width:
55 It
45 ft
OK
OK
or Radius
ft
CAR
Media and Soils Summa
ume
��
+ �/ Z
'SI'�'ry"�
Drawdown time, ponded volume
8.7 hr
OK
= '
Drawdown time, to 24 inches below surface
5.4 hr
OK
:Z�
Drawdown time, total:
14.1 hr
-
023942
In -situ soil:
Soil
in/hr
- y •, Q. ,• T=
.qtr • !)` G
permeability
I N E
Pant it
�rC
permeability
2.00 in/hr
OK
11 }A
Soil composition
�.
• Sand (by volume)
8811/0
OK
2
• Fines (by volume)
8%
OK
Form SW401- Bioretention -Rev.8
June 25, 2010
Parts I and 11. Design Summary, Page 1 of 3

% Organic (by volume) 4% OK
Total: 100%
Phosphorus Index (P- Index) of media
10 (unitless) OK
Permit Plumber:
(to be provided by DWQ)
Form SW401- Bioretention -Rev.8
June 25, 2010 Parts I and II. Design Summary, Page 2 of 3

Basin Elevations
Temporary pool elevation
Type of bioretention cell (answer "Y" to only one of the two following
questions):
Is this a grassed cell?
Is this a cell with trees /shrubs?
Planting elevation (top of the mulch or grass sod layer)
Depth of mulch
Bottom of the planting media soil
Planting media depth
Depth of washed sand below planting media soil
Are underdrains being installed?
How many clean out pipes are being installed?
What factor of safety is used for sizing the underdrains? (See
BMP Manual Section 12.3.6)
Additional distance between the bottom of the planting media and
the bottom of the cell to account for underdrains
Bottom of the cell required
SHWT elevation
Distance from bottom to SHWT
Internal Water Storage Zone (IWS)
Does the design include IWS
Elevation of the top of the upturned elbow
Separation of IWS and Surface
Planting Plan
Number of tree species
Number of shrub species
Number of herbaceous groundcover species
Additional Information
Does volume in excess of the design volume bypass the
bioretention cell?
Does volume in excess of the design volume flow evenly distributed
through a vegetated filter?
What is the length of the vegetated filter?
Does the design use a level spreader to evenly distribute flow?
Is the BMP located at least 30 feet from surface waters (50 feet if
SA waters)?
Is the BMP located at least 100 feet from water supply wells?
Are the vegetated side slopes equal to or less than 3:1?
Is the BMP located in a proposed drainage easement with access
to a public Right of Way (ROW)?
Inlet velocity (from treatment system)
Is the area surrounding the cell likely to undergo development in the
future?
Are the slopes draining to the bioretention cell greater than 20 %?
Is the drainage area permanently stabilized?
Pretreatment Used
(Indicate Type Used with an "X' in the shaded cell)
Gravel and grass
(8 +inches gravel followed by 3 -5 ft of grass)
Grassed swale
Forebay
Other
Form SW401- Bi,.retention -Rev.8
June 25, 2010
Permit Number:
(to be provided by DWQ)
325.00 fmsl
N (Y or N)
Y (Y or N) OK media depth
324 fmsl
2 inches OK
321 imsl
3 ft
1 ft
Y (Y or N)
2 OK
10 OK
1 ft
319 fmsl
315 fmsl
4 ft OK
Y (Y or N)
fmsl
324 ft
2
3
3 OK
Y (Y or N) OK
N (Y or N) Excess volume must pass through filter,
It
(Y or N)
Y (Y or N) OK
Y (Y or N) OK
Y (Y or N) OK
Y (Y or N) OK
ft/sec
N (Y or N) OK
N (Y or N) OK
Y (Y or N) OK
Y
Parts I and II. Design Summary, Page 3 of 3

Permit No:
(to be assigned by DWQ)
fll. REQUIRED ITEMS CHECKLIST
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Pagel Plan
Initials Sheet No.
Plans (1" 50' or larger) of the entire site showing:
- Design at ultimate build -out,
-Off -site drainage (if applicable),
Delineated drainage basins (include Rational C coefficient per basin),
Cell dimensions,
Pretreatment system,
High flow bypass system,
Maintenance access,
Recorded drainage easement and public right of way (ROW),
Clean out pipe locations,
Overflow device, and
Boundaries of drainage easement.
++
2. Plan details (1" = 30' or larger) for the bioretention cell showing:
Cell dimensions
►'
Pretreatment system,
High flow bypass system,
U'r
Maintenance access,
Recorded drainage easement and public right of way (ROW),
Design at ultimate build -out,
Off -site drainage (if applicable),
Clean out pipe locations,
Overflow device, and
Boundaries of drainage easement.
Indicate the P -Index between 10 and 30
_
3. Section view of the bioretention cell (1" = 20' or larger) showing:
Side slopes, 3:1 or lower
Underdrain system (if applicable), and
Bioretention cell layers [ground level and slope, pre- treatment, ponding depth, mulch depth, fill media
depth, washed sand, filter fabric (or choking stone if applicable), #57 stone, underdrains (if applicable),
SHWT level(s), and overflow structure]
4. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
results of the soils report must be verified in the field by DWQ, by completing & submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information All
elevations shall be in feet mean sea level (fmsl). Results of soils tests of both the planting soil and the in
situ soil must include:
Soil permeability,
Soil composition (% sand, % fines, % organic), and
P- index.
5. A detailed planting plan (1" = 20' or larger) prepared by a qualified individual showing:
A variety of suitable species,
Sizes, spacing and locations of plantings,
Total quantity of each type of plant specified,
A planting detail,
The source nursery for the plants, and
Fertilizer and watering requirements to establish vegetation.
6. A construction sequence that shows how the bioretention cell will be protected from sediment until the
W t entire drainage area is stabilized.
7. The supporting calculations (including untlerdrain calculations, if applicable).
A _ 3. A copy of the signed and notarized inspection and maintenance (I &M) agreement.
�0 • 9. A copy of the deed restriction.
Form SW401- Bioretention -Rev.7 Part III, Page 1 of 1

BMP 2 - Bio
Project Name: Palms Apartments
City /State: Raleigh, NC
Project #: 2130086
Date: 5- Feb -14
STORMWATER BMP - BIORETENTION (85% TSS Removal & 35% TN Removal) BMP #2
Land Use
Area
(ac)
% IA
Imp. Area
(ac)
Impervious
0.41
100
0.41
Open Space
0.35
0
0.00
ffsite ROW
0.08
25
0.02
Totals
E
0.84
0.43
Total % Impervious Surface Area = 51.2 %
1 -Inch Runoff Volume Calculation
Using the runoff volume calculations in the "Simple Method" as described by Schueler (1987)
Rv = 0.05 + 0.009(1) where, Rv = Runoff coefficient, in. /in.
I = Percent impervious
Rv = 0.51 in. /in.
Total runoff volume from 1 -inch precipitation:
Runoff volume S = (Design rainfall) (Rv) (Drainage Area)
S = 0.036 acre -ft
1557 cu. ft.
Bioretention Area Planting Elevation =
324.00
feet
Water quality pool elevation=
325.00
feet
Storage volume provided =
0.052
acre -ft
2255
cu. ft.
Drawdown Time:
Darcy's Law: Q= (2.3x10-5 *K *A *(H /L)
Q= (2.3x10 -5 *(2 in /hr) *(1,557 sf) *(1 ft/ft))
Q = 0.072
Time to Draw down Ponding area:
t = V/Q = 2,255 cf /0.072 cfs = 31,481 s
t = 8.7 hrs
Time to Drawdown through first 24 inches of bioretention:
V (24 inches) = SA *n *(2 ft)
V (24 inches) = 1,557 sf * 0.45 *2 = 1,402 cf
t = V/Q = 1,402 cf /0.07 cfs = 19,565 s
t = 5.4 hrs
Total Drawdown time = 14.2 hours
Underdrain Design:
Manning's Equation:
D = 16 *(Q *n /s "')' /'
D = 16 *(0.072 *0.011/0.010.5)3 /8
Minimum Diameter D = 2.60 inches
Factor of Safety of 10 D = 16 *((10 *0.072) *0.011/0.010.5)3 /8
D = 6.17 inches
Use 2 - 4" smooth walled Plastic Pipe

BMP3

A '
NCDENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WETLAND SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part III) must be printed, filled out and submitted along with all the required information.
I, 'PROJECT INFORMATION
Project name Greenway Village at Lake Boone Trail
Contact name Hunter Freeman
Phone number 9194693340
Date February 4, 2014
Drainage area number 3
o �
IL DESIGN INFORMATION
Site Characteristics
Drainage area
62,726.40 ft
Impervious area
23,396.95 ft2
Percent impervious
37.3%%
Design rainfall depth
1.00 inch
Peak Flow Calculations
1 -yr, 24 -hr rainfall depth
1 -yr, 24 -hr intensity
Pre - development 1 -yr, 24 -hr runoff
Post - development 1 -yr, 24 -hr runoff
Pre /Post 1 -yr, 24 -hr peak control
Storage Volume: Non -SA Waters
Minimum required volume
Volume provided (temporary pool volume)
Storage Volume: SA Waters Parameters
1.5" runoff volume
Pre - development 1 -yr, 24 -hr runoff volume
Post - development 1 -yr, 24 -hr runoff volume
Minimum volume required
Volume provided
Outlet Design
Depth of temporary pool /ponding depth (DF ants)
Drawdown time
Diameter of orifice
Coefficient of discharge (CD) used in orifice diameter
calculation
Driving head (Ho) used in the orifice diameter calculation
2.83 in
0.12 in /hr
0.20 ft3 /sec
0.54 ft3 /sec
0.34 ft3 /sec
2,017.00 ft3
2,557.00 ft3 OK
ft3
ft3
ft 3
ft3
ft3
-1
R rf
SEAL
028942
••�G I N t V
i
12.00 in OK
2.00 days OK
1.00 in Drawdown orifice diameter may be insufficient. Please provide
adequate supporting calculations.
0.60 (unitless)
1.00 ft OK
I -orm SW401- Wetland- Rev.6- 11/16/09 Parts I and II. Project Design Summary, Page 1 of 3

Surface Areas of Wetland Zones
Surface Area of Entire Wetland
Shallow Land
The shallow land percentage is:
Shallow Water
The shallow water percentage is:
Deep Pool
Forebay portion of deep pool (pretreatment)
The forebay surface area percentage is:
Non - forebay portion of deep pool
The non - forebay deep pool surface area percentage is:
Total of wetland zone areas
Add or subtract the following area from the zones
Topographic Zone Elevations
Temporary Pool Elevation (TPE)
Shallow Land (top)
Permanent Pool Elevation (PPE)
Shallow Water /Deep Pool (top)
Shallow Water bottom
Most shallow point of deep pool's bottom
Deepest point of deep pool's bottom
Design must meet one of the following two options:
This design meets Option #1,
Top of PPE is within 6" of SHWT, If yes:
SHWT (Seasonally High Water Table)
This design meets Option #2,
Wetland has liner with permeability < 0.01 in /hr, If yes:
Depth of topsoil above impermeable liner
Topographic Zone Depths
Temporary Pool
Shallow Land
Permanent Pool
Shallow Water
Deep Pool (shallowest)
Deep Pool (deepest)
Planting Plan
Are cattails included in the planting plan?
Number of Plants recommended in Shallow Water Area:
Herbaceous (4 +cubic -inch container)
Number of Plants recommended in Shallow Land Area:
Herbaceous (4 +cubic -inch container), OR
Shrubs (1 gallon or larger), OR
Trees (3 gallon or larger) and Herbaceous (4+ cubic -inch)
Number of Plants provided in Shallow Water Area:
Herbaceous (4 +cubic -inch container)
Number of Plants provided in Shallow Land Area:
Herbaceous (4 +cubic -inch container)
Shrubs (1 gallon or larger)
Trees (3 gallon or larger) and
Grass -like Herbaceous (4+ cubic -inch)
2,227.00 ft' Insufficient wetland surface area.
890.00 ft, OK
40%%
890.00 le OK
40%%
247.00 It' OK
11 %%
200.00 ft2 OK
9%%
2,227.00 ft' OK
0.00 ft,
327.00 ft amsl
326.00 ft amsl
325.50 ft amsl
324.00 ft amsl
323.50 ft amsl
N (Y or N)
ft amsl OK
Y (Y or N)
6.00 rn OK
12.00 in OK
6.00 in OK
24.00 in OK
30.00 in OK
N (Y or N) OK
250
250
40
5
and
200
255
OK
255 OK
42 OK
6 OK
Pami SW401 '✓Veflai:d- Rev.8- 11/16/09 Parts I and II. Project Design Summary, Page 2 of 3

Additional Information
Can the design volume be contained?
Y
(Y or N)
OK
Does project drain to SA waters? If yes,
N
(Y or N)
Excess volume must pass through filter.
What is the length of the vegetated filter?
ft
Are calculations for supporting the design volume provided in the
Y
(Y or N)
OK
application?
Is BMP sized to handle all runoff from ultimate build -out?
Y
(Y or N)
OK
Is the BMP located in a recorded drainage easement with a
Y
(Y or N)
OK
recorded access easement to a public Right of Way (ROW)?
The length to width ratio is:
1.91 :1
OK
Approximate wetland length
55.00 ft
Approximate wetland width
34,00 ft
Approximate surface area using length and width provided
2,210.00
ft 2
This approx. surface area is within this number of square feet
of the entire wetland surface area reported above:
Will the wetland be stabilized within 14 days of construction?
Y
(Y or N)
OK
V. "• ". �: -,' ���. °+ -1 ;/16/09 Parts I and 11. Project'Design Sumrn'ary, Page 9 of 3

Permit No.
(to be provided by DWQ)
III. REQUIRED ITEMS CHECKLIST
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Initials Pagel Plan
Sheet No.
1. Plans (1 " 50' or larger) of the entire site showing:
`
Design at ultimate build -out,
Off -site drainage (if applicable),
Delineated drainage basins (include Rational C coefficient per basin),
Wetland dimensions (and length to width ratio),
Pretreatment system,
Maintenance access,
- Proposed drainage easement and public right of way (ROW),
Overflow device, and
Boundaries of drainage easement.
A
2. Plan details (1" = 50' or larger) for the wetland showing:
Wetland dimensions (and length to width ratio)
ppuV"-*!)
Pretreatment system,
V
Maintenance access,
Proposed drainage easement and public right of way (ROW),
Ca�ISTit�rn"a
Design at ultimate build -out,
Off -site drainage (if applicable),
Overflow device, and
y
- Boundaries of drainage easement.
Section view of the wetland (1" = 20' or larger) showing:
Side slopes, 3:1 or lower
Wetland layers
All wetlands: Shallow land depth, shallow water depth, deep pool depth
Option 1, no clay liner: SLWT depth
Option 2, clay liner: Depth of topsoil on top of liner, liner specifications
4. A detailed planting plan (1" = 20' or larger) prepared by a qualified individual showing:
A variety of several suitable species (not including cattails),
Sizes, spacing and locations of plantings,
- Total quantity of each type of plant specified,
A planting detail,
The source nursery for the plants, and
Fertilizer and watering requirements to establish vegetation.
I� 5. A construction sequence that shows how the wetland will be protected from sediment until the entire
drainage area is stabilized.
6. The supporting calculations (including drawdown calculations).
7. A copy of the signed and notarized operation and maintenance (0 &M) agreement.
8. A copy of the deed restrictions (if required).
��� • 9. A soils report that is based upon an actual field investigation and soil borings. County soil maps are not an
acceptable source of soils information.
SW401- Wetland- Rev.6- 11/16/09 Part III, page 1 of 1

Project Name: Palms Apartments
City /State: Raleigh, NC
STORMWATER WETLAND (40% TN Removal) BMP #3
Land Use
Area
(ac)
% IA
Imp. Area
(ac)
Impervious
0.38
100
0.4
Open Space
0.43
0
0.0
Offsite ROW
0.63
25
0.2
Totals
1.44
0.5
Total % Impervious Surface Area = 37.3 %
BMP 3 - Wetland
Project #: 2130086
Date: 5- Feb -14
1 -Inch Runoff Volume Calculation
Using the runoff volume calculations in the "Simple Method" as described by Schueler (1987)
Rv = 0.05 + 0.009(1) where, Rv = Runoff coefficient, in. /in.
I = Percent impervious
Rv = 0.39 in. /in.
Total runoff volume from 1 -inch precipitation:
Runoff volume, S = (Design rainfall) (Rv) (Drainage Area)
S = 0.046 acre -ft
2017 cu. ft.
Water quality pool elevation= 327.00 feet
Storage volume provided = 0.059 acre -ft
2557 cu. ft.
Wetland Zone Areas (sq. ft.)
WQ Ponding Depth = 12 in
Orifice Calculator
Q = Cd *A *(2gh) ^(1/2)
Variables
WQ Volume: 0.059 Acre -ft
Head: 1.00 ft
Draw down time: 48 hrs
Orifice Area 0.005323 sq. ft
Orifice Diam 0.987895 in
USE 1 INCH DIAMETER ORIFICE
2556.972 cf
0.333333 ft
172800 s
0.766498 sq. in
Constants
g = 32.2 ft/s2
Cd = 0.6
Provided
% of total
Deep Pools & Foreba s
447
20%
Shallow Land
890
40%
Shallow Water
890
40%
Totals
2227
100%
Orifice Calculator
Q = Cd *A *(2gh) ^(1/2)
Variables
WQ Volume: 0.059 Acre -ft
Head: 1.00 ft
Draw down time: 48 hrs
Orifice Area 0.005323 sq. ft
Orifice Diam 0.987895 in
USE 1 INCH DIAMETER ORIFICE
2556.972 cf
0.333333 ft
172800 s
0.766498 sq. in
Constants
g = 32.2 ft/s2
Cd = 0.6

BMP4

Permit Number:
(to be provided by DWQ)
A�
NCDENR STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
SAND FILTER SUPPLEMENT
This form must be filled out on line, printed and submitted with all of the required information.
Make sure to also fill out and submit the Required Items Checklist (Section Ill) and the I &M Agreement (Section IV)
IL'NAWI OT NFORMATION.
Project name Greenway Village at Lake Boone Trail
Contact name Hunter Freeman
Phone number 919 - 469 -3340
Date February 4, 2014
Drainage area number 4
11. DESIGN INFORMATION
2.83
Site Characteristics
1 -yr, 24 -hr intensity
Drainage area (AD)
119,790.00 ft OK
Impervious area
55,342.98 ft'
% Impervious (IA)
46.2%%
Design rainfall depth (RD)
1.00 in
Peak Flow Calculations
1 -yr, 24 -hr runoff depth
2.83
in
1 -yr, 24 -hr intensity
0.12
in /hr
Pre - development 1 -yr, 24 -hr runoff
0.21
ft3 /sec
Post - development 1 -yr, 24 -hr runoff
1.20
ft3 /sec
Pre /Post 1 -yr, 24 -hr peak control
0.99
ft3 /sec
Storage Volume
Design volume (WQV)
f 4,648.00 ft3
Adjusted water quality volume (WQVAd)
3,486.00 ft3 OK
Volume contained in the sedimentation basin and on top of the sand filter
3,750.00 ft3
Top of sand filter /grate elevation
321.5 ft amsl
Weir elevation (between chambers)
321.5 ft amsl
Maximum head on the sedimentation basin and sand filter (hMaxFilter)
3.00 ft OK
Average head on the sedimentation basin and sand filter (hA)
1.50 ft OK
Runoff Coefficient (Rv)
0.47 (unitless)
Type of Sand Filter
Open sand filter? N
Y or N
SHWT elevation
ft amsl
Bottom of the sand filter elevation
ft amsl
Clearance (dSHWT)
Closed /pre -cast sand filter'? Y
Y or N
SHWT elevation
315.00 ft amsl
Bottom of the sand filter elevation
320.00 ft amsl
Clearance (dsHW-r)
5.00
If this is a closed, underground closed sand filter: The clearance between
the surface of the sand filter aid the bottom of the roof of the underground
7.00 ft
structure (dspace)
y
N.
SEAL
428942
C.
\'A
Rt rl So "I 5 _1009Sept17 Parts I and II. Project Design Summary, "Page"1 or 2

Sedimentation Basin
Surface area of sedimentation basin (As)
Sedimentation basin /chamber depth
Sand Filter
Surface area of sand filter (AF)
Top of sand media filter bed elevation
Bottom of sand media filter bed /drain elevation
Depth of the sand media filter bed (dF)
Coefficient of permeability for the sand filter (k)
Outlet diameter
Outlet discharge/f low rate
Time to drain the sand filter (t)
Time to drain the sand filter (t)
Additional Information
Does volume in excess of the design volume bypass the sand filter?
Is an off -line flow - splitting device used?
If draining to SA waters: Does volume in excess of the design volume flow
evenly distributed through a vegetated filter?
What is the length of the vegetated filter?
Does the design use a level spreader to evenly distribute flow?
Is the BMP located at least 30ft from surface waters (50ft if SA waters)?
If not a closed bottom, is BMP located at least 100ft from water supply wells?
Are the vegetated side slopes equal to or less than 3:1
Is the BMP located in a recorded drainage easement with a recorded access
easement to a public Right of Way (ROW)?
What is the width of the sedimentation chamber /forebay (Wsd)?
What is the depth of sand over the outlet pipe (dpipe)?
Permit Number:
(to be provided by DWQ)
527.00 ft' vr\. IVRtt:Ls InuulmAnl, UUr nldy neeu rU Ue 1l01t7dsCU rU
...... +..Ih
—. 4-4 —1.— IF .,..... ....J... Ci.. �...�,.,
3.00 ft
500.00 fe vr\. Iweeis InmmHuln, uur Iudy IItlCU ru ue uaaedseU ru
CFnr -
321.50 It amsl
320.00 ft amsl
1.50 ft
3.50 (ft/day)
4.00 in
0.05 ft"; sec
40.00 hours OK. Submit drainage calculations.
1.67 days
Y Y or N
OK
N Y or N
Insufficient flow splitter.
YorN
It
YorN
_
Y Y or N
OK
YorN
YorN
Y Y or N
OK
5.00 ft
OK
1,0011
OK
Slh• "i? •. i i!'rr 7'<.V 5'2009Septl7 Parts I and II. Proj6dMesign S�uinm'ary, Page 2 of 2

Permit No.
(to be provided by DWQ)
Ill. REQUIRED ITEMS CHECKLIST
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal
package will result in a request for additional information. This will delay final review and approval of the project. Initial
in the space provided to indicate the following design requirements have been met. If the applicant has designated an agent, the
agent may initial below. If a requirement has not been met, attach justification.
Initials
l
u ►fit
Plan
Sheet No.
i cZ 1. Plans (1" - 50' or larger) of the entire site with labeled drainage area boundaries
- System dimensions (length, width, and depth) for both the sedimentation chamber and the filter
chamber,
Maintenance access,
Flow splitting device,
Proposed drainage easement and public right of way (ROW),
- Design at ultimate build -out,
Off -site drainage (if applicable), and
Boundaries of drainage easement.
2. Plan details (1" = 30' or larger) for the sand filter showing:
- System dimensions (length, width, and depth) for both the sedimentation chamber and the filter
chamber,
- Maintenance access,
- Flow splitting device,
Vegetative filter strip dimensions and slope (if SA waters),
Proposed drainage easement and public right of way (ROW),
- Design at ultimate build -out,
- Off -site drainage (if applicable), and
Boundaries of drainage easement.
3. Section view of the sand filter (1" = 20' or larger) showing:
- Depth(s) of the sedimentation chamber and sand filter chamber,
Depth of sand filter media,
Connection between the sedimentation chamber and the sand filter chamber and weir elevation,
SHWT elevation,
Outlet pipe, and
- Clearance from the surface of the sand filter to the bottom of the roof of the underground structure (if
applicable).
4. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
results of the soils report must be verified in the field by DWQ, by completing & submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information.
JAW, � 5. Supporting calculations (including drainage calculations)
mb 6. Signed and notarized operation and maintenance (0 &M) agreement
7. A copy of the deed restrictions (if required).
Form SW401 -Sand Filter -Rev.5 2009Sept17 Part III, Page 1 of 1

BMP 4 - Sand Filter
Project Name: Palms Apartments
City /State: Raleigh NC
STORMWATER BMP #4 - Sand Filter
Land Use
Area
(ac)
% IA
Imp. Area
(ac)
Impervious
1.11
100
1.1
Open Space
1.00
0
0.0
Offsite ROW
0.64
25
0.2
Totals
1 2.75
1.3
Total % Impervious Surface Area = 46.2
Project #: 2130086
Date: 5- Feb-14
1. Water Quality Volume (Schueler's Simple Method)
Using the runoff volume calculations in the "Simple Method" as described by Schueler 0 98 7)
Rv = 0.05 + 0.009(l) where, Rv = Runoff coefficient, in. /in.
= Percent impervious
Rv = 0.47 in. /in.
Total runoff volume from 1 -inch precipitation:
Runoff volume, S = (Design rainfall) (Rv) (Drainage Area)
WQV = 0.107 acre -ft Used to size the surface areas ofsediment chamber and sand filter
4648 fe
WQV,; = 0.080 acre -ft Used as the volume that must be contained between sediment chamber
3486 ft' and sand filter (above sand)
2. Maximum Head on the Sand Filter and the Sedimentation Basin
hM- Fitter= WQVad{(ft)/[AXf6 +AKfeA
As = Surface area of Sediment Basin
At = Surface area of Sand Filter
Sediment Basin Surface Area
A, = - (Qdw) x ]n(1 -E)
% = Average rate of outflow
0.05 fe /sec
w = Settling velocity of particle
0.0004 ft/s (20 micron particle) sugested
E = Trap Efficeiency of chamber
0.9 sugested
A,= 310 ft (minimum surface area)
Sand Filter Surface Area
Af= (WQV *dr) /(k *d *(ha +dr))
dr= Depth of the sand Filter bed (minimum of 1.5)
1.5 ft
k = Coefficeient of permeability for the sand filter bed
3.5 ft/day (suggested)
t = Time required to drain the WQV thourgh the sand filter bed
1.66 day (requirement)
hM.Fi1W = Maximum Head on Filter
3.5 ft (design input)
Af= 369 ft
Constraint (WQV must be contained in Sediment Basin /Sand Filter)
[Aa +Ar] x hma.Filta > WQV
3. Minimize Sandfilter Surface Area with respect to a specified h value
As = 627
Af= 369
Greater than minimum As, Design meets criteria
Required Sand Surface Area = 369 ft`
Provided = 500 fe
Design meets criteria

BMP5

A7.*'IAlr
NCDENR
� y
O "t
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WETLAND SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part III) must be printed, filled out and submitted along with all the required information.
1. PROJECT INFORMATION
Project name Greenway Village at Lake Boone Trail
Contact name Hunter Freeman
Phone number 9194693340
Date February 4, 2014
Drainage area number 5
II. DESIGN INFORMATION
2.83 in
Site Characteristics
1 -yr, 24 -hr intensity
Drainage area
47,480.44 f?
Impervious area
19,799.33 fe
Percent impervious
41.7%%
Design rainfall depth
1.00 inch
Peak Flow Calculations
1 -yr, 24 -hr rainfall depth
2.83 in
1 -yr, 24 -hr intensity
0.12 in /hr
Pre - development 1 -yr, 24 -hr runoff
0.05 ft3 /sec
Post - development 1 -yr, 24 -hr runoff
Pre /Post 1 -yr, 24 -hr peak control
0.54 ft3 /sec
0.49 ft3 /sec
Storage Volume: Non -SA Waters
Minimum required volume
1,684.00 ft3
A����j/
Volume provided (temporary pool volume)
2,025.00 ft'
OK ` CSS; • yr-
•p �_
L
j9�
SEAL �-
Storage Volume: SA Waters Parameters
ft 3
02$942
1.5" runoff volume
W
Pre - development 1 -yr, 24 -hr runoff volume
Post - development 1 -yr, 24 -hr runoff volume
ft3
/�� R1 j
Minimum volume required
ft3
t
Volume provided
ft3
Outlet Design
Depth of temporary pool /ponding depth (DPiants)
12.00 in
OK
Drawdown time
2.00 days
OK
Diameter of orifice
1.00 in
Drawdown orifice diameter may be insufficient. Please provide
adequate supporting calculations.
Coefficient of discharge (Cc) used in orifice diameter
0.60 (unitless)
calculation
Driving head (Ho) used in the orifice diameter calculation
1.00 ft
OK
Form SW401- Wetland- Rev.6- 11/16/09 Parts I and II. Project Design Summary, Page 1 of 3

Surface Areas of Wetland Zones
Surface Area of Entire Wetland
1,750.00 ft'
Insufficient wetland surface area.
Shallow Land
700.00 ft2
OK
The shallow land percentage is:
40%%
Shallow Water
700.00 ft2
OK
The shallow water percentage is:
40%%
Deep Pool
32
Forebay portion of deep pool (pretreatment)
200.00 ft2
OK
The forebay surface area percentage is:
11% %
Non - forebay portion of deep pool
150.00 ft2
OK
The non - forebay deep pool surface area percentage is:
9%%
Total of wetland zone areas
1,750.00 ft2
OK
Add or subtract the following area from the zones
0.00 ft
OK
Topographic Zone Elevations
5
OK
Temporary Pool Elevation (TPE)
Shallow Land (top)
329.50 ft amsl
Permanent Pool Elevation (PPE)
Shallow Water /Deep Pool (top)
328.50 it amsl
Shallow Water bottom
328.00 ft amsl
Most shallow point of deep pool's bottom
326.00 ft amsl
Deepest point of deep pool's bottom
325.50 It amsl
Design must meet one of the following two options:
This design meets Option #1,
N (Y or N)
Top of PPE is within 6" of SHWT, If yes:
SHWT (Seasonally High Water Table)
ft amsl
OK
This design meets Option #2,
Y (Y or N)
Wetland has liner with permeability < 0.01 in /hr, If yes:
Depth of topsoil above impermeable liner
4.00 in
OK
Topographic Zone Depths
Temporary Pool
Shallow Land
12.00 in
OK
Permanent Pool
Shallow Water
6.00 in
OK
Deep Pool (shallowest)
30.00 in
OK
Deep Pool (deepest)
36.00 in
OK
Planting Plan
Are cattails included in the planting plan?
N (Y or N)
OK
Number of Plants recommended in Shallow Water Area:
Herbaceous (4 +cubic -inch container)
200
Number of Plants recommended in Shallow Land Area:
Herbaceous (4 +cubic -inch container), OR
200
Shrubs (1 gallon or larger), OR
32
Trees (3 gallon or larger) and Herbaceous (4+ cubic -inch)
4 and
160
Number of Plants provided in Shallow Water Area:
Herbaceous (4 +cubic -inch container)
205
OK
Number of Plants provided in Shallow Land Area:
Herbaceous (4 +cubic -inch container)
205
OK
Shrubs (1 gallon or larger)
33
OK
Trees (3 gallon or larger) and
5
OK
Grass -like Herbaceous (4+ cubic -inch)
Form SW401- Wetland- Rev.6- 11/16/09 Parts I and II. Project Design Summary, Page 2 of 3

Additional Information
Can the design volume be contained?
Y
(Y or N)
OK
Does project drain to SA waters? If yes,
N
(Y or N)
Excess volume must pass through filter.
What is the length of the vegetated filter?
ft
Are calculations for supporting the design volume provided in the
Y
(Y or N)
OK
application?
Is BMP sized to handle all runoff from ultimate build -out?
Y
(Y or N)
OK
Is the BMP located in a recorded drainage easement with a
Y
(Y or N)
OK
recorded access easement to a public Right of Way (ROW)?
The length to width ratio is:
2.14 :1
OK
Approximate wetland length
fi0.00 ft
Approximate wetland width
28.00 ft
Approximate surface area using length and width provided
1,680.00 f?
This approx. surface area is within this number of square feet
f the entire wetland surface area reported above:
Will the wetland be stabilized within 14 days of construction?
Y
(Y or N)
OK
Form SW401- Wetland- Rev.6- 11/16/09 Parts I and II. Project Design Summary, Page 3 of 3

Permit No.
(to be provided by DWQ)
Jill. REQUIRED ITEMS CHECKLIST
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Initials Page/ Plan
Sheet No.
1. Plans (1 " - 50' or larger) of the entire site showing:
Design at ultimate build -out,
Off -site drainage (if applicable),
- Delineated drainage basins (include Rational C coefficient per basin),
Wetland dimensions (and length to width ratio),
Pretreatment system,
Maintenance access,
Proposed drainage easement and public right of way (ROW),
Overflow device, and
- Boundaries of drainage easement.
/
M/A
"
2. Plan details (1 = 50' or larger) for the wetland showing:
Wetland dimensions (and length to width ratio)
Pretreatment system,
�J
Maintenance access,
Proposed drainage easement and public right of way (ROW),
Design at ultimate build -out,
Off -site drainage (if applicable),
.� S.
Overflow device, and
Boundaries of drainage easement.
Section view of the wetland (1" = 20' or larger) showing:
Side slopes, 3:1 or lower
- Wetland layers
All wetlands: Shallow land depth, shallow water depth, deep pool depth
Option 1, no clay liner: SLWT depth
Option 2, clay liner: Depth of topsoil on top of liner, liner specifications
4. A detailed planting plan (1" = 20' or larger) prepared by a qualified individual showing:
- A variety of several suitable species (not including cattails),
Sizes, spacing and locations of plantings,
Total quantity of each type of plant specified,
A planting detail,
The source nursery for the plants, and
Fertilizer and watering requirements to establish vegetation.
5. A construction sequence that shows how the wetland will be protected from sediment until the entire
drainage area is stabilized.
6. The supporting calculations (including drawdown calculations).
7. A copy of the signed and notarized operation and maintenance (0 &M) agreement.
8. A copy of the deed restrictions (if required).
9. A soils report that is based upon an actual field investigation and soil borings. County soil maps are not an
acceptable source of soils information.
SW401- Wetland- Rev.6- 11/16/09 Part III, page 1 of 1

Project Name: Palms Apartments
City /State: Raleigh, NC
STORMWATER WETLAND (40% TN Removal) BMP #5
Land Use
Area
(ac)
% IA
Imp. Area
(ac)
Impervious
0.37
100
0.4
Open Space
0.38
0
0.0
Offsite ROW
0.34
25
0.1
Totals
1.09
0.5
Total % Impervious Surface Area = 41.7
BMP 5 - Wetland
Project #: 2130086
Date: 5- Feb -14
1 -Inch Runoff Volume Calculation
Using the runoff volume calculations in the "Simple Method" as described by Schueler (1987)
Rv = 0.05 + 0.009(1) where, Rv = Runoff coefficient, in. /in.
I = Percent impervious
Rv = 0.43 in. /in.
Total runoff volume from 1 -inch precipitation:
Runoff volume, S = (Design rainfall) (Rv) (Drainage Area)
S = 0.039 acre -ft
1684 cu. ft.
Water quality pool elevation= 329.50 feet
Storage volume provided = 0.046 acre -ft
2025 cu. ft.
Wetland Zone Areas (sq. ft.)
WQ Ponding Depth = 12 in
Orifice Calculator
Q = Cd *A *(2gh) 1(1/2)
Variables
WQ Volume: 0.046 Acre -ft
Head: 1.00 ft
Draw down time: 48 hrs
Orifice Area 0.004215 sq. ft
Orifice Diam 0.879073 in
USE 1 INCH DIAMETER ORIFICE
2024.669 cf
0.333333 ft
172800 s
0.606931 sq. in
Constants
g = 32.2 ft/S2
Cd = 0.6
Provided
% of total
Deep Pools & Foreba s
350
20%
Shallow Land
700
40%
Shallow Water
700
40%
Totals
1750
1009/6
Orifice Calculator
Q = Cd *A *(2gh) 1(1/2)
Variables
WQ Volume: 0.046 Acre -ft
Head: 1.00 ft
Draw down time: 48 hrs
Orifice Area 0.004215 sq. ft
Orifice Diam 0.879073 in
USE 1 INCH DIAMETER ORIFICE
2024.669 cf
0.333333 ft
172800 s
0.606931 sq. in
Constants
g = 32.2 ft/S2
Cd = 0.6

STREAM IMPACT EXHIBITS

00r,
\� HORTON ROAD
x,440
STREAM IMPACT SUMMARY
MAP
IMPACT #
PERMANENT
STREAM
IMPACT (LF)
TEMPORARY
STREAM
IMPACT (LF)
A
1
65
33
B
2
5
45
TOTAL
70
78
GRAPHIC SCALE
200 0 100 200 400
RISING RISING RISING
I RISING RISING
1 inch = 200 ft.
Re "' °° I Date I v °,'g° °. D., • OVERALL IMPACT MA P
' � GREENWAY VILLAGE AT LAKE BOONE TRAIL WITHERS RAVENEL
Dawn By Date I
o�n 1/10/M14 I
cn�kea By °b " °. (STREAM) r-C 1NELR5 1 PLANNERS 1 SURVEYORS L,
TB �1�,� City of Raleigh Wake County North Carolina „s n7acKe °a °o��e carp," °gym cap °n °az7s„ tec 9,9 -0ss33ao wmeaa�e °ei � °m oce °se "° C 083

TOP OF BANK
PROPOSED DRIVEWAY
FlNISHED GRADE
EXISTING GRADE F
TOP OF RIP RAP J RIP RAP
TO MATCH INSTALL CENTER 48" RCP 10 "J
PRE - CONSTRUCTION BELOW EbSTNIG STREAM BED
STREAM CONTOUR GRADE ELEVATION
RIPRAP APRON DETAIL PIPE PLACEMENT CROSS SECTION
NTS NTS
0
I
�NALL H
RT
AM
0
20 ft.
kREENWAY VILLAGE AT LAKE BOONE TRAIL III MAP A III WITHERS &- RAVENEL II
ENGINEER$ 1 PLANNERS 1 SURVEYORS

3
E
a
s
PROPOSED DRIVEWAY
TOP OF BANK F FINISHED GRADE
E7GSTING GRADE
00 J,
C— — —
TOP OF RIP RAP R
TO MATCH INSTALL 54" RCP 12" BELOW
RE—CONSTRUCTION EXISTING STREAM BED GRADE
STREAM CONTOUR ELEVATION
RIPRAP APRON DETAIL PIPE PLACEMENT CROSS SECTION
NITS NITS
Nali1N • /
EXIST VGEED E OF DRIVEWAY - PR RETAINING ±LL
ZEMOVE 25 FT INCH
LVERTS AND IN ALL 30 FT
LVERTS
90
NO MODIFyCATION
goal
00000
V
IMPACT 45 LF
PHALTJ
J
HIC SCALE
20 0 10 20 40
1 inch = 20 ft.
GREENWAY VILLAGE AT LAKE BOONE TRAIL MAP B WITHERS RAVENEL
■M4IM1111RS I PLAMMIti 1 suevsroas
RALEIGH WAKE North Carolina

BUFFER IMPACT EXHIBITS

x
S
a
E
E
a
0
s
n
i
i1
-I
HORTON ROAD
1 vm4�'�9�
x,440
3 7
GRAPHIC SCALE
200 0 100 200 400
EGGS EGGS EGGS
I EGGS EGGS
1 inch = 200 ft.
K�,,,,on "l`, I 6Y 11, °�'� � . 11, OVERALL IMPACT MA P
GREENWAY VILLAGE AT LAKE BOONE TRAIL WITH &- RAVENEL heel"
Drawn By Date
checked ey °LY 10b " °� �• BUFFER ENGINEERS 1 PLANNERS 1 SURVEYORS
VityofRaleigh Wake Count „5MecKe°a°o
North Carolina ,— ca N,fthC —1 27511 tec9- 6¢3340 . wth— r°e°d— 0c—N°c -0033
BUFFER IMPACT SUMMARY
MAP
IMPACT #
PERMANENT
ZONE 1
IMPACT (SF)
PERMANENT
ZONE 2
IMPACT (SF)
C
3
—
166
D
4
130
440
E
5
-
286
F
6
5051
3114
G
7
678
-
TOTAL
5859
4006
GRAPHIC SCALE
200 0 100 200 400
EGGS EGGS EGGS
I EGGS EGGS
1 inch = 200 ft.
K�,,,,on "l`, I 6Y 11, °�'� � . 11, OVERALL IMPACT MA P
GREENWAY VILLAGE AT LAKE BOONE TRAIL WITH &- RAVENEL heel"
Drawn By Date
checked ey °LY 10b " °� �• BUFFER ENGINEERS 1 PLANNERS 1 SURVEYORS
VityofRaleigh Wake Count „5MecKe°a°o
North Carolina ,— ca N,fthC —1 27511 tec9- 6¢3340 . wth— r°e°d— 0c—N°c -0033

60
a
ZF IL E 1 `11� 80*0
NSTRI, CTED
WETLAIID
IMPACT #3
PERMANENT
ZONE 1
IMPACT 0 SF
ONE 2
BYPASS PIPE
FROM WETLAND
rIllm '-�
• - • • GRAPHIC SCALE
' • ' • • . - • 20 0 10 20 40
GREENWAY VILLAGE AT LAKE BOONE TRAIL JIF MAP C WITHERS &- RAVENEL
RRRIRRRRS 1 PLANNERS I SURVEYORS

a
in
SAN
./
WR
IMPACT #4
2 PERMANENT
/ ZONE 1
�� �' MfXACT 130 SF
PERMANENT
% Z❑N -tz,
►� O / IMPACT 440 SF
/.. GRAPHIC SCALE
/ zo o to zo ao
�.10� /•• ` 1 inch = 20 ft.
GREENWAY VILLAGE AT LAKE BOONE TRAIL MAP D WITHERS RAVENEL
■rsiraaas I PLAMrrlf i sueraroas
RALEIGH WAKE North Carolina

i Oak
CONSTRUCTED WET ND
## BYP S PIPE
/ FRO WETLAND '
/ PACT #5
PERMANENT
ZONE 1
IMPACT 0 SF
� PERMANENT
ZONE 2
l IMPACT 286
`gam � gililN
V
GRAPHIC 5 ALE
V zo o io zo a
M ) 1 inch =2 ft.
I
IS REENWAY VILLAGE AT LAKE BOO NE TRAIL MAP E WITHERS R RAVENEL
ersirssas i rLArraas i suaysroes
RALEIGH WAKE North Carolina

3
s
,/7 . ;
— Note:/Exi
_ \r
.� II 6
OWN
�GBW'
A
EXL13-TING SW OUTFALL
wpm
GRAPHIC SCALE
20 o lo 20 40
1 inch 20 ft.
GREENWAY VILLAGE AT LAKE .�
BOONE TRAIL - _ -
11.1ED11 WAKE North Carolina