20060466 Ver 4_Application_20081112

972 Trinity Road
Raleigh, North Carolina 27607
Design Consultants
?F=@Rowf? B
Nov 12 2008
Transmittal DENR - WATER QUALITY
WETLANDS AND STORMWATER BRANCH
Date: 11- 0(-- 08 Job. No: 536-04
To: NC Division of Water Quality, Central Office

TEL [phone]
FAX [phone]
USACE AID# 200521019
2521 Crabtree Boulevard
Raleiah, NC 276o4-226o
Attn: Ms. Cvndi Karoly
Re: PCN Application for Whismring Pines Subdivision Franklinton Franklin County
Sending:
® Attached ? Under separate cover the following
via items:
® Prints/Plans ? Shop Drawings ? Specifications ? Samples
Copies Date Description
7 Completed PCN Application Package
1 Permit Application Fee. $47-9
? Other:
Transmitted for:
® Your use ? Approved as submitted ? Resubmit ? Copies for approval
? As requested ? Approved as noted ? Submit ? Copies for distribution
? Review and comment ? Returned for ? Return ? Corrected prints
Remarks Ms. Karoly - Please find attached 7 copies of the completed PCN Application for
Whispering Pines Subdivision, Franklinton, Franklin County, North Carolina.
Please feel free to contact me if you have any questions. Thank you.
CoDV to:
Application Fees
Applications received as of September 1, 2007 are subject to the following fee schedule:
Scale of impacts to wetlands*, waters* and streams** New Fee Schedule Effective
September 1, 2007
Major water quality applications: Greater than or equal
to one acre of wetlandstwaters AND/OR Greater than or $570.00
equal to 150 feet of streams (whether intermittent or
perennial)
Minor water quality applications: Less than one acre of
webandstwaters AND Less than 150 feet of streams $240.00
(whether intermittent or perennial)
* Includes all wetlands and waters identified as Waters of the State, including 404 Wetlands,
Isolated Wetlands, and other non-404 Wetlands subject to a permitting program administered
by the State of North Carolina.
** Includes all streams claimed by the State of North Carolina. US Army Corps of Engineers
stream categories such as important/unimportant, or Relatively Permanent Waters are not
relevant to this issue.
*** The legislation refers to "major" and "minor' applications. These artificial categories refer to
combined impacts, and have no relationship whatsoever to the actual types of
401Certifications and Isolated Wetlands Permits (Individual and General). Fees are based
strictly on the scope of impact, not on the type of authorization requested. If you apply for a
401 Certification and an Isolated Wetlands Permit on a single project, the impacts are added
to determine the total application fee.
Checks should be made out to "N.C. Division of Water Quality."
Additional Provisions:
• All applications must be accompanied by a check for the required amount Payment must
be made in full. No applicants or projects are exempt from the fee requirement, but for
designated Emergency Watershed Protection projects.
• If payment is not included with a request for a Certification or Permit, the application will
be returned to the applicant as incomplete.
• If the correct payment is not included with an Individual 404/401 or a CAMA Permit
Application, a project file will be created, but the applicant will receive a letter informing
them that the project will not be processed until the full payment is provided.
Changes to an existing 401 Water Quality Certification or Isolated Wetlands Permit
require a modified Certification/Permit by DWQ. A fee is required with each issuance.
• Due to the requirement for fee payment for each request, applicants are advised to
include as many project details and phases as possible in the initial application.
• If a project requires a CAMA permit and its associated fee, a separate payment for the
401 Certification is not required; rather, the Division of Coastal Management administers
the fee for both the CAMA Permit and 401 Certificatiordisolated Wetlands Permit
• No refunds will be issued for denied, modified or withdrawn certification requests. If
DWQ or the Corps of Engineers retires a project due to insufficient or inaccurate
information, no refunds will be issued.

SPAULD

PA
Planning • Civil Engineering • Environmental
October 9, 2008
Ms. Cyndi Karoly
NC Division of Water Quality
Central Office
2321 Crabtree Boulevard, Suite 250
Raleigh, North Carolina 27604 - 2260
RE: Modifications to Whispering Pines Subdivision
USACE AID# 200521019
DWQ Project # 06-0466
Dear Ms. Karoly,

On August 31, 2006, your office issued a 401 Water Quality Certification
approval and a Tar-Pamlico Buffer Authorization Certificate for Whispering Pines
Subdivision, located in Franklinton, Franklin County, North Carolina The new Franklin
County tax PIN for the-property is T8-64--28--7058-(old-PIN-1864--29-6200). The permits for this project have expired and we would like to resubmit for a new
401 Water Quality Certification approval and a Tar-Pamlico Buffer Authorization
Certificate. This project was on hold for various reasons and only recently has the project
become active again. No impacts have been made to the streams or wetlands on this
property.
We have had several discussions with your office over the past 9 months and as a
result we have attached a revised PCN Application containing the new information
requested, as well as drawings representing the changes to the subdivision. One of the
important changes from the previous submittal was to eliminate 75 lots due to the
lack of available sewage treatment by the County. This resulted in lower impervious
surface percentage for the project. The attached drainage area map and calculations
details areas over or under 24% impervious. Phase 1 of the project is under 24%
impervious as well as some of the future phases. In drainage areas over 24% impervious
we have provided wet detention pond designs.
Phone: [phone] * Fax: [phone] •972 Trinity Road • Raleigh, North Carolina 27607

The resulting impacts following these changes are:
Permanent wetland impacts
Accumulated area: 3,812 sgft (0.0874 acres)
Permanent stream impact:
Temporary stream impact: 131f
1331f
698 sgft (0.0160 acres)
60 sgft (0.0014 acres)
Permanent Tar-Pamlico River Buffer impact - zone 1
Accumulated area: 9,162 sgft (0.21 acres)
Temporary Tar-Pamlico River Buffer impact - zone 1
Accumulated area: 2,201 sgft (0.051 acres)
Permanent Tar-Pamlico River Buffer impact - zone 2
Accumulated area: 4,758 sgft (0.1092 acres)
Temporary Tar-Pamlico River Buffer impact - zone 2
Accumulated area: 1,484 sgft (0.034 acres)
We are not above the 150 linear foot threshold requiring stream mitigation and
therefore do not need to make a payment to the North Carolina Ecosystem Enhancement
Program's (EEP) In-Lieu-Fee Program.
Please do not hesitate to contact me if you have questions, comments or concerns
about these changes. Thank you in advance for your time spent reviewing this
information.
Sincerely,
19-
Thomas Spaulding, PE
Spaulding & Norris, PA

Office Use Only: Form Version March 08
USACE Action ID No. DWQ No. c4 r 0 4 L 6 V
(If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A".)
1. Processing
1- PA I,
1. Check all of the approval(s) requested for this project:
® Section 404 Permit ® Riparian or Watershed Buffer Rules
? Section 10 Permit ? Isolated Wetland Permit from DWQ
® 401 Water Quality Certification ? Express 401 Water Quality Certification
2. Nationwide, Regional or General Permit Number(s) Requested: Nationwide Permit #29
3. If this notification is solely a courtesy copy because written approval for the 401 Certification
is not required, check here: ?
4. If payment into the North Carolina Ecosystem Enhancement Program (NCEEP) is proposed
for mitigation of impacts, attach the acceptance letter from NCEEP, complete section VIII,
and check here: ?
5. If your project is located in any of North Carolina's twenty coastal counties (listed on page
4), and the project is within a North Carolina Division of Coastal Management Area of
Environmental Concern (see the top of page 2 for further details), check here: ?
II. Applicant Information p ? 6:4 Foil
1. Owner/Applicant Information
Name: (NEW] The Weisgerber Group NO V 1 2 2008
Mailing Address: REM 1426 Wall Road OENR - WA
[NEW] Wake Forest, North Carolina 27587 wyr"Nf ""' STORMWATER BRANCH
Telephone Number:_ MM 919.570.0418 Fax Number. (NEWS 919.570.0419
E-mail Address:
2. Agent/Consultant Information (A signed and dated copy of the Agent Authorization letter
must be attached if the Agent has signatory authority for the owner/applicant.)
Name:_ Thomas Spaulding
Company Affiliation: Spaulding & Norris, PA
Mailing Address: 972 Trinity Road
Raleigh, NC 27607
Telephone Number: 919.854.7990 Fax Number: 919.854.7925
E-mail Address: [e-mail]
n.- c -CIA

III. Project Information

-*+
' Attach a vicinity map clearly showing the location of the property with respect to local
landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property
boundaries and development plans in relation to surrounding properties. Both the vicinity map
' and site plan must include a scale and north arrow. The specific footprints of all buildings,
impervious surfaces, or other facilities- must be included. If possible, the maps and plans should
include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property
' boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion,
so long as the property is clearly defined. For administrative and distribution purposes, the
USACE requires information to be submitted on sheets no larger than 11 by 17-inch format;
' however, DWQ may accept paperwork of any size. DWQ prefers full-size construction
drawings rather than a sequential sheet version of the full-size plans. If full-size plans are
' reduced to a small scale such that the final version is illegible, the applicant will be informed that
the project has been placed on hold until decipherable maps are provided.
' 1. Name of project: Whispering Pines Subdivision
2. T.I.P. Project Number or State Project Number (NCDOT Only): N/A
' 3. Property Identification Number (Tax PIN): [NEM 1864-28-7058
' 4. Location
County: Franklin Nearest Town: Franklinton
Subdivision name (include phase/lot number): Whispering Pines Subdivision
' Directions to site (include road numbers, landmarks, etc.):
Travel north on Capitol Boulevard (US-1) from I-440 19.5 miles. Turn right onto Bert
Winston Road (SR 1133), travel 1.9 miles. Turn left onto Hicks Road (SR 1125), travel
' approximately 0.75 miles. Site is located on the East (right) side of the road.
' 5. Site coordinates (Lat/Long or decimal degrees): 36.08161 N 78.45242 W
(Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the
coordinates for each crossing of a distinct waterbody.)
6. Property size (acres): 180.22 acres
17. Name of nearest receiving body of water: Cedar Creek (Classification: C,NSW. Stream ID
28-29-(2)
' 8. River Basin:Tar-Pamlico (Subbasin 03-03-01: USGS HUC Upper Tar (03020101))
(Note - this must be one of North Carolina's seventeen designated major river basins. The
River Basin map is available at http://h2o.enr.state.nc.us/admin/map-/.)
' 9. Describe the existing conditions on the site and general land use in the vicinity of the project
at the time of this application: The site is a combination of pasture and mixed
I&
Page 6 of 14

M&

' pine/hardwood forest communities. The site has undergone forestry related agricultural
practices in the past, evidenced by skid trails and logging roads. A sanitary sewer main was
' installed along the floodplain of Cedar Creek on the southern boundary of the property.

1
I W.

10. Describe the overall project in detail, including the type of equipment to be used: The
proiect entails the development of a residential subdivision and the associated infrastructure
including: roads, water supply, and sanitary and storm sewers. Equipment used will include,
but is not limited to trackhoe excavators, bulldozers, rollers, asphalt pavers, and other
grading and road construction equipment.
11. Explain the purpose of the proposed work:
The purpose of the proposed work is to provide the necessary infrastructure to support
a
residential subdivision of single family homes.
Prior Project History
If jurisdictional determinations and/or permits have been requested and/or obtained for this
project (including all prior phases of the same subdivision) in the past, please explain. Include
the USACE Action ID Number, DWQ Project Number, application date, and date permits and
certifications were issued or withdrawn. Provide photocopies of previously issued permits,
certifications or other useful information. Describe previously approved wetland, stream and
buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project,
list and describe permits issued for prior segments of the same T.I.P. project, along with
construction schedules.
[NEW]
Mr. Thomas Brown of the US Army Corps of Engineers issued a Jurisdictional Determination on
July 11, 2005 USACE AID # 200521019). Mr. Michael Horan of the NC DM issued a Buffer
Determination on June 23, 2005.
On August 31, 2006 the NC DM issued Approval of 401 Water Quality Certification and
Authorization Certificate per the Tar-Pamlico River Buffer Protection Rules.
On September 12, 2006 Mr. Eric Alsmeyer of the USACE issued the General Permit
' Verification.

The project has been on hold since the permits were issued.
Page 7 of 14

I VI.
Future Project Plans
Are any future permit requests anticipated for this project? If so, describe the anticipated work,
and provide justification for the exclusion of this work from the current application.
There are no additional pe
?mt plications anticipated for this project
Proposed Impacts to Waters of the United States/Waters of the State
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
wetlands, open water, and stream channels associated with the project. Each impact must be
listed separately in the tables below (e.g., culvert installation should be listed separately from
riprap dissipater pads). Be sure to indicate if an impact is temporary. All proposed impacts,
permanent and temporary, must be listed, and must be labeled and clearly identifiable on an
accompanying site plan. All wetlands and waters, and all streams (intermittent and perennial)
should be shown on a delineation map, whether or not impacts are proposed to these systems.
Wetland and stream evaluation and delineation forms should be included as appropriate.
Photographs may be included at the applicant's discretion. If this proposed impact is strictly for
wetland or stream mitigation, list and describe the impact in Section VIII below. If additional
space is needed for listing or description, please attach a separate sheet.
1. Provide a written description of the proposed impacts:
The proposed impacts associated with this project include impacts to jurisdictional stream
channel, wetlands, and Tar-Pamlico Riparian Buffers for one residential street stream crossing
and the construction of Whispering _Pines subdivision including bringing a waterline along Hicks
' Road and over Cedar Creek. The water line will be supported by 4 concrete piers located along
the banks of the Creek.
2. Individually list wetland impacts. Types of impacts include, but are not limited to
mechanized clearing, grading, fill, excavation, flooding, ditching/drainage, etc. For dams,
separately list impacts due to both structure and flooding.
Wetland Impact
Site Number
(indicate on map)
Type of Impact Type of Wetland
(e.g., forested, marsh,
herbaceous, bog, etc) Located within
100-year
Floodplain
es/no) Distance to
Nearest
Stream
(linear feet) Area of
Impact
(acres)
Impact Area # 1 Road grading and storm
drainage Forested No 0 0.0043
Impact Area #3 Road grading, storm
drainage & lot fill
Forested
No
400
0.0430
Impact Area #4 Road grading and storm
drainage Forested No 250 0.0401

Total Wetland impact (acres) 0.0876
T'b-- , 0 „C I A

3. List the total acreage (estimated) of all existing wetlands on the property: 1.34 acres
delineated
4. Individually list all intermittent and perennial stream impacts. Be sure to identify temporary
impacts. Stream impacts include, but are not limited to placement of fill or culverts, dam
construction, flooding, relocation, stabilization activities (e.g., cement walls, rip-rap, crib
walls, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is proposed,
plans and profiles showing the linear footprint for both the original and relocated streams
must be included. To calculate acreage- multinlv length X width then divide by 4A 560
Stream Impact Perennial or Average Impact Area of
Number Stream Name Type of Impact Intermittent? Stream Width Length Impact
indicate on ma Before Impact linear feet acres
Impact Area #1 UT to Cedar Creek Road grading and perennial 133 0
0160
Permanent storm drainage 5 .
Impact Area #2 UT to Cedar Creek Road grading and perennial 13 0
0014
Temporary storm drainage 5 .

Total Stream Impact (by length and acreage) Permanent 133 0.0160
Temporary 13 0.0014
5. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic
Ocean and any other water of the U.S.). Open water impacts include, but are not limited to
fill- excavation- dreduinsr_ flnndina drninaoe hi,lhhPark Pte
Open Water Impact
Site Number
indicate on ma Name of Waterbody
(if applicable)
Type of Impact Type of Waterbody
(lake, pond, estuary, sound, bay,
ocean, etc. Area of
Impact
acres
N/A N/A

Total Open Water Impact (acres) N/A
6. List the cumulative impact to all Waters nfthe I1_S_ rem„ ltino from the „rn;Pet
Stream Impact (acres): Permanent
Temporary 0.0160
0.0014
Wetland Impact (acres): Permanent 0.0874
Open Water Impact (acres): N/A
Total Impact to Waters of the U.S. (acres) Permanent
Temporary 0.1034
0.0014
Total Stream Impact (linear feet): Permanent
Temporary 133
13
7. Isolated Waters
Do any isolated waters exist on the property? ? Yes
® No
Page 9 of 14

' Describe all impacts to isolated waters, and include the type of water (wetland or stream) and
the size of the proposed impact (acres or linear feet). Please note that this section only
' applies to waters that have specifically been determined to be isolated by the USACE.
XT/ A
8. Pond Creation
If construction of a pond is proposed, associated wetland and stream impacts should be
' included above in the wetland and stream impact sections. Also, the proposed pond should
be described here and illustrated on any maps included with this application.
Pond to be created in (check all that apply): ? uplands ? stream ? wetlands
t Describe the method of construction (e.g., dam/embankment, excavation, installation of
draw-down valve or spillway, etc.): N/A
' Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond,
local stormwater requirement, etc.): N/A
Current land use in the vicinity of the pond: N/A
' Size of watershed draining to pond: N/A Expected pond surface area: N/A
VII. Impact Justification (Avoidance and Minimization)
' Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide
information related to site constraints such as topography, building ordinances, accessibility, and
financial viability of the project. The applicant may attach drawings of alternative, lower-impact
site layouts, and explain why these design options were not feasible. Also discuss how impacts
were minimized once the desired site plan was developed. If applicable, discuss construction
techniques to be followed during construction to reduce impacts.
The design of the proposed project involved extensive avoidance and minimization during the
subdivision layout and planning stage. There are five stream-wetland complexes on the site as
' well as the floodplain for Cedar Creek along the southern property boundary The layout for the
streets and lots was oriented to coin In etely avoid these complexes Several additional stream
crossings were removed from the initial subdivision layouts to avoid impacts to those streams
One unavoidable impact was necessary for several reasons
The first impact, Tanglebriar Trail is the main subdivision entrance from Hicks Road The
design of the Hicks road crossing was limited by several factors First due to Hicks Road being
at 3.43% Merelevation, the slope of Tanglebriar Trail from Hicks Road was limited to 4.67% to
meet NC DOT requirements regarding rollover angle. Due to the length of Tanglebriar Trail the
' minimum slope at Fernspring Drive was limited to 5% These two restrictions create a fill
situation at the stream crossing that cannot be altered Headwalls were added to the design,
shortening the impact.
VIII. Mitigation
' DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC
Division of Water Quality for projects involving greater than or equal to one acre of impacts to
Ix
Page 10 of 14
' ,. 4L
freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial
streams.
' USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide
Permits, published in the Federal Register on January 15, 2002, mitigation will be required when
' necessary to ensure that adverse effects to the aquatic environment are minimal. Factors
including size and type of proposed- impact and function and relative value of the impacted
aquatic resource will be considered in determining acceptability of appropriate and practicable
' mitigation as proposed. Examples of mitigation that may be appropriate and practicable include,
but are not limited to: reducing the size of the project; establishing and maintaining wetland
and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of
' aquatic resource functions and values by creating, restoring, enhancing, or preserving similar
functions and values, preferable in the same watershed.
' If mitigation is required for this project, a copy of the mitigation plan must be attached in order
for USACE or DWQ to consider the application complete for processing. Any application
' lacking a required mitigation plan or NCEEP concurrence shall be placed on hold as incomplete.
An applicant may also choose to review the current guidelines for stream restoration in DWQ's
Draft Technical Guide for Stream Work in North Carolina, available at
http://h2o.enr.state.nc.us/ncwetlands/strmgide.html.
1. Provide a brief description of the proposed mitigation plan. The description should provide
as much information as possible, including, but not limited to: site location (attach directions
and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet)
of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view,
' preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a
description of the current site conditions and proposed method of construction. Please attach
a separate sheet if more space is needed.
' The overall impacts resulting from the development of Whispering Pines Subdivision are
below the 150 foot stream length threshold and com ep nsatory mitigation is not required.
2. Mitigation may also be made by payment into the North Carolina Ecosystem Enhancement
Program (NCEEP). Please note it is the applicant's responsibility to contact the NCEEP at
[phone] to determine availability, and written approval from the NCEEP indicating
that they are will to accept payment for the mitigation must be attached to this form. For
additional information regarding the application process for the NCEEP, check the NCEEP
website at http://h2o.enr. state. nc.us/wrp/index.htm. If use of the NCEEP is proposed, please
check the appropriate box on page three and provide the following information:
' Amount of stream mitigation requested (linear feet): N/A
Amount of buffer mitigation requested (square feet): N/A
Amount of Riparian wetland mitigation requested (acres): N/A
' Amount of Non-riparian wetland mitigation requested (acres): N/A
Amount of Coastal wetland mitigation requested (acres): N/A
t
Page 11 of 14
IX. Environmental Documentation (required by DWQ)
1. Does the project involve an expenditure of public (federal/state/local) funds or the use of
public (federal/state) land? Yes ? No
2. If yes, does the project require preparation of an environmental document pursuant to the
requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)?
Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA
coordinator at [phone] to review current thresholds for environmental documentation.
Yes ? No ?
3. If yes, has the document review been finalized by the State Clearinghouse? If so, please
attach a copy of the NEPA or SEPA final approval letter. Yes ? No E]
X. Proposed Impacts on Riparian and Watershed Buffers (required by DWQ)
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
required state and local buffers associated with the project. The applicant must also provide
justification for these impacts in Section VII above. All proposed impacts must be listed herein,
and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a
map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ
Regional Office may be included as appropriate. Photographs may also be included at the
applicant's discretion.
1. Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233
(Meuse), 15A NCAC 2B.0259 (Tar-Pamlico), 15A NCAC 02B.0243 (Catawba) 15A NCAC
2B .0250 (Randleman Rules and Water Supply Buffer Requirements), or other (please
\identify )? Yes ® No ?
2. If "yes", identify the square feet and acreage of impact to each zone of the riparian buffers.
' If buffer mitigation is required calculate the required amount of mitigation by applying the
buffer multinliers.

I Zone* I rcnImpactt, I Multiplier I Required
1 Permanent 9,162 3 (2 for Catawba)
Temporary 2,201
2 Permanent 4,758 1.5
Temporary 1484
L Total I Permanent 13,920 I
Temporary 3,685
* Zone I extends out 30 feet perpendicular from the top of the near bank of channel; Zone 2 extends an
additional 20 feet from the edge of Zone 1.
' 3. If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e.,
Donation of Property, Riparian Buffer Restoration / Enhancement, or Payment into the
n /'1 .r 1 A

-A
' Riparian Buffer Restoration Fund). Please attach all appropriate information as identified
within 15A NCAC 2B.0242 or.0244, or.0260.
' We do not believe that buffer mitigation is required. The street crossing impacts are less than
150 feet or one-third of an acre of protected riparian buffer.
' XI. Stormwater (required by DWQ)
' Describe impervious acreage (existing and proposed) versus total acreage on the site. Discuss
stormwater controls proposed in order to protect surface waters and wetlands downstream from
the property. If percent impervious surface exceeds 20%, please provide calculations
demonstrating total proposed impervious level.
&n y existing impervious surfaces on the property will be removed. The impervious are
a
resulting from the proposed development cannot be determined at this time, as the building
' product for the lots is unknown. However, from the preliminW plans, the proposed impervious
area for streets and sidewalks within the subdivision can be approximated at 16.35 acres or 9.1%
of the total site area. From this information, the estimated allowable impervious area per lot can
' be determined fora 'yen impervious threshold. If 24% of the total site area is assumed to be
impervious, this would allow approximately 2,800 sgft of impervious area per lot. At 20%

' impervious, each lot could contain approximately 2,000 sgft of impervious area. The lots will
likely contain between 2,000 sgft and 3,000 sgft of impervious area eacb, inclu ' house
driveway, patio, and a front walkway. Assuming a mix of larger and smaller building products
throughout the subdivision, the overall impervious area of the site will likely be well below 24%.

The stormwater s stem for Whi nn
v spe g Pines Subdivision will provide detention at each
stormwater outlet, for nutrient removal, as well as diffuse flow through level spreaders at the
outlet of each detention facility. At this point the stormwater system has not vet been designed
so storm drainage details and worksheets are unavailable.

XII, Sewage Disposal (required by DWQ)
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.
Wastewater generated by Whispering Pines will be transported to an existing sanitary sewer
outfall on the southern property boundary and from there conveyed tot he Franklin Coun , Cedar
Creek Wastewater Treatment Plant.
XIII. Violations (required by DWQ)
Is this site in violation of DWQ Wetland Rules (15A NCAC 2H .0500) or any Buffer Rules?
Yes ? No
Is this an after-the-fact permit application? Yes ? No
7 --- I) ..l 1 A

XIV. Cumulative Impacts (required by DWQ)
' Will this project (based on past and reasonably anticipated future impacts) result in additional
development which could impact nearby downstream water quality? Yes ? No
If yes, please submit a qualitative or quantitative cumulative impact analysis in accordance with
' the most recent North Carolina Division of Water Quality policy posted on our website at
http://h2o.enr.state.nc.us/ncwetlands.'- If no, please provide a short narrative description:
This project will not result in any additional development. The sewer outfall that the project is
' utilizing already exists and the project does not provide street stubs to any parcels that do not
already have significant road frontage.
XV. Other Circumstances (Optional):
It is the applicant's responsibility to submit the application sufficiently in advance of desired
' construction dates to allow processing time for these permits. However, an applicant may
choose to list constraints associated with construction or sequencing that may impose limits on
work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and
' Threatened Species, accessibility problems, or other issues outside of the applicant's control).

/l - lv --
Appliicant/Agent's\$jgnature Date
(Agent's signature is valid only if an authorization letter from the applicant is provided.)
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ALL BLAhIM TO BE
Name:
' Ad
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Project lDeseriptio= _Wb' , Pines Stabdiyisicla
Date, 2.-1
The D"utmant of, the Anny
' US Army Carps or Eugh ears
Wilmington District
Pty BOX 1890
Wilmin n, NC 294024 8"
t Attu. Mr. Eric l rite er
' Field Office: Ralei. ah Regul4M Field Office
Re: Wetlands Related Consulting & Permitting
' To Wham It May Concern:
1, the current property owner. hereby dgslgru to and authorize Spaulding d? Nott is, P.A.,
to act on my behalf as my agent in the processing afpermit applieations. to Rtrnisla upon
request supplemental information in support of application, etc., from this day forward.
This the t '5K- clay of ?,%o.c? !R , ,
' This wtifacation superccdes any pmviaus cxrrrespond concerning the age for this
' PRINT O3zvner's Name PROPERTY Owna-9 Signature
Cc; Ms; Cyndi Karoly
NCDI:NR - Division of Water Quality ? CL'd r-.
' 401 Oversight/ Express Review Permitting Unit
1630 Mail Servke Center
Ralatgh,NC 27599-1650

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LIZ s S li4.4-o 2.47.
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
NCbENR
401 CERTIFICATION APPLICATION FORM
DRY EXTENDED DETENTION BASIN SUPPLEMENT
This fort must be filled out, printed and submitted.
The Required Items Checldist (Part 111) must be printed, filled out and submitted along with all the required information.
I. PROJECT INFORMATION'
Project name Whispering Pines Subdivision Phase 1
Contact person Thomas J. Spaukfing
Phone number 919-854-79W
Date 7/122008
Drainage area number Dry Basin 1
11, DESIGN INF , ON
Site Characteristic
Drainage area 107,158.00 fl2
Impervious area 40,511.00 ft
% Impervious 0.38
Design rainfall depth 1.00 in
Peak Flow Calculations
1 yr, 24-1r rainfall depth 2.88 in
Rational C, pre-development 0.20 (unitless)
Rational C, post-development 0.50 (unitless)
Rainfall intensity. I-yr, 24-hr storm 4.87 in/hr
Pre-development 1-yr, 24-hr peak flow 2.39 fe/sec
Post-development 1-yr, 24-hr peak flow 5.99 felsec
Pre/Post 1-yr, 24-hr peak control 3.60 If/sec
Storage Volume: Non-SR Waters
Design volume 3,780.00 fe
Sediment storage volume provided 986.00 fe OK
Storage Volume: SR Waters
1-yr, 24-hr rainfall depth in
Pre-development 1-yr, 24-hr runoff volume fl3
Post-development 1-yr, 244 runoff volume fl3
Basin Design Parameters
Drawdown time 1.11 days OK
SMMT elevation fmsl
Basin bottom elevation 307.00 fmsl OK
Storage elevation 309.50 fmsl
Basin side slopes 3.0 :1 OK
Top elevation 311.00 fmsl OK
Freeboard provided 1.50 fl OK
Basin Bottom Dimensions
Basin length 180.00 ft
Basin width 30.00 fl
Length to width ratio 6.00 :1 OK
Additional Information
Total runoff volume captured by basin 1.04 ac-in
Forebey provided n (Y or N)
Is basin in a recorded drainage easement? y (Y or N) OK
Does basin capture all runoff at ultimate build-out? y (Y or N) OK
Is a sediment depth indicator included? y (Y or N) OK
Does the basin include a drain? y (Y or N) OK
Form SW401-Dry E)dended Detention Basin-Rev.2 Parts I. & H. Design Summary, Page 1 of 1

Permit No.
(to be provided by DWQ)
o?oF wArF9aG
> ti
O <

A n
NCDENP
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
DRY EXTENDED DETENTION BASIN SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Hems Checklist (Part 111) must be printed, filled out and subnWed along with all the required information.
L PROJECT INFORMATION
Project name Whispering Pines Stbdvision Phase 1
Contact person Thomas J. Spauldng
Phone number 919.8547990
Date 7012008
Drainage area number Dry Basin 2
111. DESIGN INFORMATION
Site Characteristics
Drainage area 292,287.60 fe
Impervious area 70,567.20 fe
% Impervious 0.24
Design rainfall depth 1.00 in
Peak Flow Calculations
1-yr, 244w rainfall depth 2.88 in
Rational C, pre-development 0.20 (unitless)
Rational C, post-development 0.50 (unitless)
Rainfall intensity l-yr, 24-hr storm 4.87 inthr
Pre-development 1-yr, 24-hr peak flow 6.53 ft3/sec
Post development 1-yr, 244 peak lbw 16.33 ft3/sec
PretPost 1-yr, 244 peals control 9.80 ft3/sec
Storage Volume: Non-SR Waters
Design volume 10,529.00 ft3
Sediment storage volume provided 2,710.00 ft3 OK
Storage Volume: SR Waters
1-yr, 24-hr rainfall depth in
Pre-development 1 yr, 24-hr runoff volume ft3
Post-development 1 yr, 244 runoff volume ft3
Basin Design Parameters
Drawdown time 1.22 days OK
Sl-W elevation fmsl
Basin bottom elevation 290.00 fmsl OK
Storage elevation 293.00 fmsl
Basin side slopes 3.0 :1 OK
Top elevation 295.00 fmsl OK
Freeboard provided 2.00 It OK
Basin Bottom Dimensions
Basin length 200.00 It
Basin width 50.00 ft
Length to width ratio 4.00 :1 OK
Additional Information
Total runoff volume captured by basin 2.90 ac-in
Forebey provided n (Y or N)
Is basin in a recorded drainage easement? y (Y or N) OK
Does basin capture all runoff at ultimate build-out? y (Y or N) OK
Is a sediment depth indicator included? y (Y or N) OK
Does the basin include a drain? y (Y or N) OK

Permit No.
(to be provided by DW()
o`'o? wAr?9?c
? C
O -c
Form SW401-Dry Extended Detention Basin-Rev. 2 Parts I. & II. Design Summary, Page 1 of 1

WATER QUALITY POND CALCULATIONS
DA: C-1
Project Name

Whispering Pines
Project Number
536-04
Date
30-Sep-08
31. 0 7,r,. %,r???Er?r?w,?

3rd revision
2nd revision
1 st revision

i

U

1

1
1

„at
-.:s
Permit Not-
(to be provided by D WGy
?m? o?aF W A t?9OG
rrrr`? j C
WDENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
Thfs farm must be filled out, primed and submitted
The Rege*W Items CheMst (Part 111) must be printed, filled out and submitted along with all of the required information.
I. PROJECT INFORWQN
Project name Whispering Pines Subdvision
Contact person Thomas J Spaukkng
Phone number 919854-7990
Date 10/312006
Drainage area number DA - C-1 Wet Pond 3
III. DESIGN INFORMATION
Site Characteristics
Drainage area
Impervious area
% impervious
Design rainfall depth
Storage Volume: Non-SR Waters
Minimum volume required
Volume provided
Storage Volume: SR Waters
1-yr, 244 runoff depth
Pre-development 1-yr, 24-hr runoff
Post-development 1-yr, 24-hr runoff
Minimum volume required
Volume provided
Peak Flow Calculations
1-yr, 244w rainfall depth
Rational C, pre-development
Rational C, postAwelopment
Rainfall intensity.l-yr, 244 storm
Pre-development 1-yr, 24-hr peak flow
Post-development 1-yr, 24-hr peek flow
PrelPost 1-yr, 244 peak flow control
Basin Elevations
Basin bottom elevation
Sediment cleanout elevation
Bottom of shelf elevation
Permanent pool elevation
SFIWT elevation
Top of shelf elevation
Temporary pool elevation
479,276.00 ft
149,175.00 ft
31.13 %
1.00 in
13,185.00 ft
17,011.00 fO
1,
fe
ft3
fe
fe
2.88 in
0.20 (unitless)
0.50 (unitless)
4.87 irft
10.71 felsec
26.78 felsec
16.07 felsec
319.00 It
320.00 It
322.00 It
322.50 It
ft
323.00 It
324.50 It
Form SW401-Wet Detention Basin-Rev.4
Parts I. & il. Design Summary, Page 1 of 2
.+ .? - Permit No.
' (to be provided by DWGy

II. DESIGN INFORMATION
Volume and Surface Area Calculations
SA/DA ratio 1.34 (unitless)
Surface area at the bottom of shelf 5,500.00 ttz
Volume at the bottom of shelf 18,748.00 fe
Permanent pool, surface area required 6,430.00 fe
Permanent pool, surface area provided 7,200.00 fe OK
Permanent pool volume 22,279.00 ft3
Average depth for SA/DA tables 3.09 ft OK
Surface area at the top of shelf -9,100.00 fe
Volume at the top of shelf 25,998.00 ft3
Forebay volume 4,828.00 ft3
Forebay % of permanent pool volume 21.67 % OK
Temporary pool, surface area provided 10,981.00 fe
Drawdown Calculations
Treatment volume drawdown time 3.50 days OK
Treatment volume discharge rate 0.16 ft3/s
Pre-development 1-yr, 24-hr discharge 10.71 feels OK
Post-development 1-yr, 24-hr discharge 0.09 ft3/s OK
Additional Information
Diameter of orifice 1.75 in
Design TSS removal 85 %
Basin side slopes 3.00 :1 OK
Vegetated shelf slope 10.00 :1 OK
Vegetated shelf width 10.00 it OK
Length of flowpath to width ratio 5.00 :1 OK
Length to width ratio 2.00 :1 OK
Trash rack for ovW= & orifice? Y (Y or N) OK
Freeboard provided 1.00 it OK
Vegetated filter provided? y (Y or N) OK
Recorded drainage easement provided? Y (Y or N) OK
Capkres all runoff at ultimate build-alt? Y (Y or N) OK
Drain mechanism for maintenance or emergencies pump out
Form SW401-Wet Detention Basin-Rev.4 Parts i. & II. Design Summary, Page 2 of 2

Water Quality Pond Drainage Area Data
Project Whispering Pines
Project No. 536-04
Date 30-Sep-08
Total site area 479,276 square feet = 11.00 acres
Dr ain a area to and Other Drai nage Area

Impervious areas Existing
s Proposed
s Change
s Existing
s Proposed
s
On-site buildings 0 72,500 72,500 0 0
On-site streets 0 57,315 57,315 0 0
On-site parking 0 0 0 0 0
On-site sidewalks 0 19,360 19,360 0 0
Other on-site 0 0 0 0 0
Total off-site impervious 0 0 0 0 0
Total Impervious 0. 1 149,175 149,175 0 0
Dr ain a area to and Other Drai nage Area

Non-impervious areas Existing
s Proposed
s Change
s Existing
s Proposed
s
On-site grass/landscape 0 248,280 248,280 0 0
On-site woods 479,276 84,321 -394,955 0 0
Other undeveloped 0 0 0 0 0
Total off-site non-impervious 0 0 0 0 0
Total non-impervious 479,276 332,601 -146,675 0 0
Total Drainage Area 4791276 481,776 2,500 0 0
Percent Impervious 0.0 31.0 31.0 n/a n/a
Notes:
DA-C-1 xIs
Site Drainage Area Data
Page 1 of 1
Printed 10/6/2008 3:52 PM
s

Water Quality Pond Surface Area Calculations for Wet Ponds
Project Whispering Pines
Project No. 536-04
Date 30-Sep-08
Total on-site drainage area to pond 479,276 square feet
Total impervious area in drainage area 149,175 square feet
Average water depth of basin at normal pool 7.5 feet
location of site Raleigh
Site region Piedmont
% Impervious cover 31.1 percent
If the site is in a coastal area, will a vegetative filter be used? n/a
Surface Area/Drainage Area Ratios:
For a site in the Piedmont 1.3 percent
For a site in a Coastal County w/ Vegetative Filter 0.0 percent
For a site in a Coastal County w/out Vegetative Filter 0.0 percent
Required surface area of pond:
For a site in the Piedmont 6,430.0 square feet
For a site in a Coastal County w/ Vegetative Filter 0,0 square feet
For a site in a Coastal County w/out Vegetative Filter 0.0 square feet
Notes:

DA-C-1 xIs
Pond SA -Wet Pond Page 1 of 1 Printed 10/6/2008 3:52 PM

Water Quality Pond Stormwater Runoff Volume Calculations
Project Whispering Pines
Project No. 536-04

Date 30-Sep-08

Drainage area 479,276 square feet
Impervious area 149,175 square feet
Rainfall depth 1.00 inches

Percent Impervious 31.1 percent

R(v)=0.05+0.009*(Percent impervious)
Runoff coefficient - R(v) 0.33 in/in
Runoff volume=(Design rainfall)*(R(v))*(Drainage area)
Runoff volume 13,185.1 cubic feet
Notes:
DA-C-1 As
Runoff Volume Cafes

Page 1 of 2 Printed 10/6/2008 3:52 PM

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Water Quality Basin Dewatering Time Calculations
Project Whispering Pines
Project No. 536-04
Date 12-Aug-08
Surface area of basin 10,419 square feet
Maximum head of water above dewatering hole 2.00 feet
Orifice coefficient 0.60
Diameter of each hole 2.00 inches
Number of holes 1
Cross sectional area of each hole = 0.022 square feet
Cross sectional area of each hole = 3.1 square inches

Cross sectional area of dewatering hole(s) = 0.022 square feet
Cross sectional area of dewatering hole(s) = 3.1 square inches
Dewatering time for basin = 77.9 hours
Dewatering time for basin = 3.2 days
Calculations based on NC Sediment and Erosion Control Manual
Page 8.07.8
Notes:

1
1
1
1
1
1
1
1
1
1
1

Water Quality Pond Summary Information
Project Whispering Pines
Project No. 536-04
Date 30-Sep-08

Drainage area to pond 481,776 square feet = 11.06 acres
Impervious area in drainage area 149,175 square feet = 3.42 acres
Bottom of pond elevation 319.00 feet
Normal pool elevation 322.50 feet
Pond volume at normal pool 13,478 cubic feet
Required volume for design rainfall 13,185 cubic feet
Required surface area for pond 6,430 square feet

Volume provided for storage of design rainfall = 17,011 cubic feet at elevation 324.5
Surface area provided at normal pool 6,600 square feet
DA-C-1 As
Summary Data
Page 1 of 1 Printed 10/6/2008 3:57 PM

WATER QUALITY POND CALCULATIONS
DA: G-1
POND 4
Project Name
Whispering Pines
Project Number
536-04
Date
30-Sep-08
X3.1 % l7wo" J64-5

3rd revision
2nd revision
1 st revision

-ate
?s•
Permit No.
(to be provided by DWY?
OF Wnrg9
r
ATA 6?cl
WDENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form must be filled out, printed and submitted
The Required Items CheddW (Part 111) must be printed, filled out and submitted along wrfi? all of the required informaiion.
Project name
Contact person
Phone number
Date
Drainage area number
IhoMaS J SpaUling
919-854-7990
10V3/2008
DA - G-1 Wet Pond 4
IL DESIGN INFORMATION -
Site Characteristics
Drainage area 150,066.00 fe
Impervious area 64,671.00 fe
% impervious 43.10 %
Design rainfall depth 1.00 in
Storage Volume: Non-SR Waters
Minimum volume required 5,475.00 fe
Volume provided 7,583.00 fe
Storage Volume: SR Waters
1-yr, 24-hr runoff depth in
Pre-development 1-yr, 24-hr runoff ft
Post-development 1-yr, 24-hr runoff f?
Minimum volume required fe
Volume provided ft3
Peak Flow Calculations
1-yr, 24-hr rainfall depth 2.88 in
Rational C, pre-development 0.20 (unidess)
Rational C, post-development 0.50 (unitises)
Rainfall intensity: t-yr, 244w storm 4.87 irtlhr
Pre-development 1-yr, 24-hr peak flow 3.36 felsec
Post-development 1 yr, 244r peek flow 8.40 felsec
PrelPost 1-yr, 24-hr peak flow control 5.04 fe/sec
Basin Elevations
Basin bottom elevation 288.00 ft
Sediment cleanout elevation 289.00 It
Bottom of shelf elevation 294.00 It
Permanent pool elevation 294.50 ft
SW elevation ft
Top of shelf elevation 295.00 it
Temporary pool elevation 296.50 It
Form SW401-Wet Detention Basin-Rev.4 Parts 1. & II. Design Summary, Page 1 of 2
,s Permit No.
(to be provided by DWO)
fit, -DESIGN INFORMATION
Volume and Surface Area Calculations
SAIDA ratio 1.34 (unitless)
Surface area at the bottom of shelf 4,100.00 fe
Volume at the bottom of shelf 11,631.00 ft3
' Permanent pool, surface area required 2,020.00 f?
Permanent pool, surface area provided 5,610.00 fe OK
Permanent pool volume 16,867.00 ft3
' Average depth for SAIDA tables 3.01 It OK
Surface area at the top of shelf 3,320.00 fe
Volume at the top of shelf 17,291.00 ft3
Forebay volume 3,354.00 ft3
' Forebay % of permanent pool volume 19.88 % OK
Temporary pool, surface area provided 9,030.00 fe
Drawdown Calculations
Treatment volume drawdown time
3.70
days
OK
Treatment volume discharge rate 0.07 feels
Pre-development 1-yr, 24-hr discharge 3.36 feh OK
' Post-development 1-yr, 244 discharge 0.11 ft3/s OK
Additional Information
Diameter of orifice 1.75 in
Design TSS removal 85 %
Basin side slopes 3.00 :1 OK
Vegetated shelf slope 10.00 :1 OK
Vegetated shelf width 10.00 it OK
Length of flowpath to width ratio 5.00 :1 OK
Length to width ratio 2.00 :1 OK
Trash rack for overflow & orifice? y (Y or N) OK
Freeboard provided 1.00 ft OK
Vegetated filter provided? y (Y or N) OK
Recalled drainage easement provided? y (Y or N) OK
Cepures all runoff at ultimate build-out? y (Y or N) OK
Drain mechanism for maintenance or emergencies purrs out

Form SW401-Wet Detention Basin-Rev.4
Parts I. & II. Design Summary, Page 2 of 2

Water Quality Pond Drainage Area Data

Project Whispering Pines
Project No. 536-04
Date 30-Sep-08
Total site area 150,066 square feet = 3.45 acres
Dra inage area to and Other Drai nage Area

Impervious areas Existing
s Proposed
s Change
s Existing
s Proposed
s
On-site buildings 0 17,500 17,500 0 0
On-site streets 0 40,988 40,988 0 0
On-site parking 0 0 0 0 0
On-site sidewalks 0 6,183 6,183 0 0
Other on-site 0 0 0 0 0
Total off-site impervious 0 0 0 0 0
Total Impervious 0 64,671 64,671 0 0
Dr aina a area to and Other Drai nage Area

Non-impervious areas Existing
s Proposed
s Change
s Existing
s Proposed
s
On-site grass/landscape 0 73,653 73,653 0 0
On-site woods 150,066 11,742 -138,324 0 0
Other undeveloped 0 0 0 0 0
Total off-site non-impervious 0 0 0 0 0
Total non-impervious 150,066 85,395 -64,671 0 0
Total Drainage Area 150,066 150,066 0 0 0
Percent Im ervious 0.0 43.1 43.1 n/a n/a
Notes:
DA-H.xls
Site Drainage Area Data Page 1 of 1 Printed 10/1/2008 1:17 PM

Water Quality Pond Surface Area Calculations for Wet Ponds
Project Whispering Pines
Project No. 536-04
Date 30-Sep-08
Total on-site drainage area to pond 150,066 square feet
Total impervious area in drainage area 64,671 square feet
Average water depth of basin at normal pool 3.5 feet
Location of site Raleigh
Site region Piedmont
% Impervious cover 43.1 percent
If the site is in a coastal area, will a vegetative filter be used? n/a
Surface Area/Drainage Area Ratios:
For a site in the Piedmont 1.3 percent
For a site in a Coastal County w/ Vegetative Filter 0.0 percent
For a site in a Coastal County w/out Vegetative Filter 0.0 percent
Required surface area of pond:
For a site in the Piedmont 2,020.0 square feet
For a site in a Coastal County w/ Vegetative Filter 0.0 square feet
For a site in a Coastal County w/out Vegetative Filter 0.0 square feet
Notes:
DA-H.xls
Pond SA -Wet Pond Page 1 of 1 Printed 10/1/2008 1:17 PM

Water Quality Pond Stonnwater Runoff Volume Calculations
Project Whispering Pines
Project No. 536-04
Date 30-Sep-08
Drainage area 150,066 square feet
Impervious area 64,671 square feet
Rainfall depth 1.00 inches
Percent Impervious 43.1 percent
R(v)=0.05+0.009*(Percent impervious)
Runoff coefficient - R(v) 0.44 in/in
Runoff volume=(Design rainfall)*(R(v))*(Drainage area)
Runoff volume 5,475.6 cubic feet
Notes:
DA-H.xls
Runoff Volume Calcs Page 1 of 2 Printed 10/1/2008 1:19 PM

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Water Quality Basin Dewatering Time Calculations
Project Whispering Pines
Project No. 536-04
Date 12-Aug-08
Surface area of basin 9,030 square feet
Maximum head of water above dewatering hole 2.00 feet
Orifice coefficient 0.60
Diameter of each hole 1.75 inches
Number of holes 1
Cross sectional area of each hole = 0.017 square feet
Cross sectional area of each hole = 2.4 square inches

Cross sectional area of dewatering hole(s) = 0.017 square feet
Cross sectional area of dewatering hole(s) = 2.4 square inches
Dewatering time for basin = 88.2 hours
Dewatering time for basin = 3.7 days
Calculations based on NC Sediment and Erosion Control Manual
Page 8.07.8
Notes:

Water Quality Pond Summary Information
Project Whispering Pines
Project No. 536-04
Date 30-Sep-08
Drainage area to pond 150,066 square feet = 3.45 acres
Impervious area in drainage area 64,671 square feet = 1.48 acres
Bottom of pond elevation 288.00 feet
Normal pool elevation 294.50 feet
Pond volume at normal pool 14,058 cubic feet
Required volume for design rainfall 5,476 cubic feet
Required. surface area for pond 2,020 square feet

Volume provided for storage of design rainfall = 15,482 cubic feet at elevation 296.5
Surface area provided at normal pool 5,610 square feet

DA-G-1.xls
Summary Data Page 1 of 1 Printed 10/6/2008 3:01 PM

WATER QUALITY POND CALCULATIONS
DA: F
Project Name
Whispering Pines
Project Number
536-04
Date
30-Sep-08
23, 4 % Sm AAl"?S

3rd revision
2nd revision
1 st revision

Water Quality Pond Drainage Area Data

Project Whispering Pines
Project No. 536-04
Date 30-Sep-08
Total site area 948,578 square feet = 21.78 acres
Dr ainage area to and Other Drai nage Area

Impervious areas Existing
s Proposed
s Change
s Existing
s Proposed
s
On-site buildings 0 125,000 125,000 0 0
On-site streets 0 86,249 86,249 0 0
On-site parking 0 0 0 0 0
On-site sidewalks 0 10,890 10,890 0 0
Other on-site 0 0 0 0 0
Total off-site impervious 0 0 0 0 0
Total Impervious 0 222,139 222,139 0 0
Dr aina a area to and Other Drai nage Area

Non-impervious areas Existing
s Proposed
s Change
s Existing
s Proposed
s
On-site grass/landscape 0 408,707 408,707 0 0
On-site woods 948,578 317,732 -630,846 0 0
Other undeveloped 0 0 0 0 0
Total off-site non-impervious 0 0 0 0 0
Total non-impervious 948,578 726,439 -222,139_ 0 0
Total Drainage Area 948,578 948,578 0 0 0
Percent impervious 0.0 23.4 23.4 n/a n/a
Notes:
DA-F.xls
Site Drainage Area Data Page 1 of 1 Printed 10/6/2008 3:34 PM

WATER QUALITY POND CALCULATIONS
DA: E
Project Name
Whispering Pines
Project Number
536-04
Date
30-Sep-08

Z 5. 1 % ?p-A%10VILUravkS

3rd revision
2nd revision
1 st revision
4L
Water Quality Pond Drainage Area Data
Project Whispering Pines
Project No. 536-04
Date 30-Sep-08
Total site area 1,672,669 square feet = 38.40 acres
Dra inage area to and Other Drai nage Area

Impervious areas Existing
s Proposed
s Change
s Existing
s Proposed
s
On-site buildings 0 202,500 202,500 0 0
On-site streets 0 172,845 172,845 0 0
On-site parking 0 0 0 0 0
On-site sidewalks 0 25,215 25,215 0 0
Other on-site 0 0 0 0 0
Total off-site impervious- 0 0 0 0 0
Total Impervious 0 400,560 400,560 0 0
Dra inage area to and Other Drai nage Area

Non-impervious areas Existing
s Proposed
s Change
s Existing
s Proposed
s
On-site grass/landscape 0 725,031 725,031 0 0
On-site woods 1,672,669 547,170 -1,125,499 0 0
Other undeveloped 0 0 0 0 0
Total off-site non-impervious 0 0 0 0 0
Total non-impervious 1,672,669 1,272,201 -400,468 0 0
Total Drainage Area 1,672,669 1,672,761 92 0 0
Percent impervious 0.0 23.9 23.9 n/a n/a
Notes:
DA-E.xis
Site Drainage Area Data Page 1 of 1 Printed 10/2/2008 2:42 PM

rwrv,ac pHp,5J9

WATER QUALITY POND CALCULATIONS
DA: C-2
Project Name
Whispering Pines
Project Number
536-04
Date
30-Sep-08
. ?/& y(npip-L) I ov-S
23
3rd revision
2nd revision
1 st revision

Water Quality Pond Drainage Area Data
Project Whispering Pines
Project No. 536-04
Date 30-Sep-08
Total site area 752,926 square feet = 17.28 acres
Dr aina a area to and Other Drai nage Area

Impervious areas Existing
s Proposed
s Change
s Existing
s Proposed
s
On-site buildings 0 105,000 105,000 0 0
On-site streets 0 43,690 43,690 0 0
On-site parking 0 0 0 0 0
On-site sidewalks 0 27,600 27,600 0 0
Other on-site 0 0 0 0 0
Total off-site impervious 0 0 0 0 0
Total Impervious 0 176,290 176,290 0 0
Dr ainage area to and Other Drai nage Area

Non-impervious areas Existing
s Proposed
s Change
s Existing
s Proposed
s
On-site grass/landscape 0 392,917 392,917 0 0
On-site woods 752,926 188,719 -564,207 0 0
Other undeveloped 0 0 0 0 0
Total off-site non-impervious 0 0 0 0 0
Total non-impervious 752,926 581,636 -171,290 0 0
Total Drainage Area 752,926 757,926 5,000 0 0
Percent Impervious 0.0 23.3 23.3 n/a n/a
Notes:
DA-C-2.xls
Site Drainage Area Data
Page 1 of 1
Printed 10/2/2008 1:54 PM
t?
WATER QUALITY POND CALCULATIONS
DA: G-2
Project Name
Whispering Pines
Project Number
536-04
Date
30-Sep-08

3rd revision
2nd revision
1 st revision

Water Quality Pond Drainage Area Data
Project Whispering Pines
Project No. 536-04
Date 30-Sep-08
Total site area 164,062 square feet = 3.77 acres
Dr ainage area to and Other Drai nage Area

Impervious areas Existing
s Proposed
s Change
s Existing
s Proposed
s
On-site buildings 0 27,500 27,500 0 0
On-site streets 0 0 0 0 0
On-site parking 0 0 0 0 0
On-site sidewalks 0 0 0 0 0
Other on-site 0 0 0 0 0
Total off-site impervious 0 0 0 0 0
Total Impervious 0 27,500 27,500 0 0
Draina a area to and Other Drai nage Area

Non-impervious areas Existing
s Proposed
s Change
s Existing
s Proposed
s
On-site grass/landscape 0 110,495 110,495 0 0
On-site woods 164,062 26,067 -137,995 0 0
Other undeveloped 0 0 0 0 0
Total off-site non-impervious 0 0 0 0 0
Total non-impervious 164,062 136,562 -27,500 0 0
Total Draina a Area 164,062 164,062 0 0 0
Percent Impervious 0.0 16.8 16.8 n/a n/a
Notes:
DA-H-2.xls
' Site Drainage Area Data
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Printed 10/1/2008 1:43 PM