20061161 Ver 3_Application_20070928

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EcoScience
EcoScience Corporation
Raleigh, North Carolina 919-828-3433
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S ~ P 2 ~ 2007
LETTER OF TRANSMITTAL ,,,~„s~N~:.wAri;~~uAUrY

Dat@:
September 28, 2007
Wpb $~;
07-360 --.••,•••~,• ~vv o i v~~~r6R 9RANCH
Attu; Ms. Cyndi Karoly / WE ARE SENDING YOU:
NC Division of Water Quality x Document Change
Order
Mail Service Center 1650 Data Plans
Raleigh, NC 27699-1650 Copy of Letter Samples
Maps Specifications

RE:
Cobblestone Subdivision PCN Prints Other
x Figures
No. of Description
Copies
7 Co ies of PCN and su ortin materials
THESE ARE TRANSMITTED as checked below:
x For approval Approved as submitted Resubmit Copies for approval
For your use Approved as noted Submit Copies for distribution
As requested Returned for corrections Return Corrected prints
REMARKS: Cyndi, please let me know if you need anv other documentation.
SENDER ~~~~ ~~ D
CC: SIGNATURE: Elizabeth Scherrer
RECIPIENT SIGNATURE:

1101 Haynes Street Suite ]O1 Raleigh, NC 27604 Telephone: [phone] Fax: 919.828.318
EcoScience
September 28, 2007
Cyndi Karoly
N.C. Division of Water Quality
Mail Service Center 1650
Raleigh, NC 27699-1650
Re: Section 401 permit for Cobblestone Subdivision
Dear Ms. Karoly,
07-360
Enclosed is PCN form and supporting materials in application for a Section 401 permit for the
Cobblestone subdivision project. Previous submittals for this project were made, but tl~e
application was returned on June 4, 2007.
The project now requires an after-the-fact permit application, as a road has been built over the
on-site stream. A reach of the stream and adjacent Neuse River riparian buffers have been
impacted. In addition, temporary sediment basins were initially placed in riparian buffers before
being removed to areas outside the buffers. Clearing and grading impacts resulted from
installation and removal of the basins. No impacts to vegetated wetlands have occurred or are
proposed.
The impacts to the stream total 120 feet, which is under the mitigation threshold for Nationwide
Permit 29 and WQC #3631. No mitigation is proposed for stream impacts.
Neuse River riparian buffer impacts total 10,112 square feet for Zone 1 and 11,676 feet for Zone
2. Per our conversation with Amy Chapman of the 401 Unit on September 5, 2007, mitigation
for these impacts will not be required, provided that the impacted area is replanted and reseeded,
and a buffer restoration plan is included with the permit package. We have submitted these plans
with the permit documentation.
Level spreader designs and specifications have also been included in the permit package
documentation per previous requests for more information.
Sincerely,

Elizabeth Scherrer
EcoScience Corporation

Cvncti Karoly
S'epternber 28, 2007
Page 2 of 2
Cc: Eric Alsmeyer
USAGE Raleigh Regulatory Field Office
6508 Falls of Neuse Road, Suite 120
Raleigh, NC 27615
Attachments

Office Use Only: Form Version March OS
USACE Action ID No. DWQ No. O Co - ~ ~ to ~ V 3
(If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A".)
I. Processing
1. Check all of the approval(s) requested for this prof ect:
® 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: 39
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
Owner/Applicant Information
Name: Mr. Monte Perr
Mailing Address: Four Winds Development; 1304 Paddock Drive; Suite F-103
Raleigh NC 27609
Telephone Number: [phone] Fax Number: [phone]
E-mail Address: mperry(c~premarketdeals.com
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: Elizabeth Scherrer
Company Affiliation: EcoScience Corporation
Mailing Address: 1101 Haynes St. Suite 101
Raleigh, NC 27604
Telephone Number: [phone] Fax Number: [phone]
E-mail Address: Scherrer(a~ecosciencenc.com
Page 1 of 8

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 maybe 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: Cobblestone Subdivision
2. T.I.P. Project Number or State Project Number (NCDOT Only):
3. Property Identification Number (Tax PIN): 1861-89-2286
4. Location
County: Frankli
Nearest Town: Youngsville
Subdivision name (include phase/lot number): Cobblestone
Directions to site (include road numbers/names, landmarks, etc.): Site is located ~ 2.5 miles
east of Youngsville on Tarboro Road (SR 1100) between Moores Pond Road (SR 1106) and
Mays Crossroads (SR 1105).
Site coordinates (For linear projects, such as a road or utility line, attach a sheet that
separately lists the coordinates for each crossing of a distinct waterbody.)
Decimal Degrees (6 digits minimum): 36.000056 °N -78.431556 °W
6. Property size (acres): 17.56 Acres
7. Name of nearest receiving body of water: Little River
8. River Basin: Neuse
(Note -this must be one of North Carolina's seventeen designated major river basins. The
River Basin map is available at htt~~://h2o.enr.state.nc.us,%adminlmapsr'.)
9. Describe the existing conditions on the site and general land use in the vicinity of the project
at the time of this application: Site comprised of forests and open areas. A perennial
stream starts at the eastern property line and flows to the west. Adjacent land uses include
residential forested and agricultural areas.
Page 2 of 8

10. Describe the overall project in detail, including the type of equipment to be used: One road
crossing and water line have been constructed to access upland areas at the rear of the
property. These features cross the on-site stream. Proposed utilities include electric and
water. Wastewater will be treated in septic facilities. Equipment to be used includes
trackhoes, bulldozers, and other land grading equipment.
11. Explain the purpose of the proposed work: Access to housing development.
IV. 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. Previous reauests for Nationwide Permit 39 and its accompanying
General Certificate 3402 were submitted on July 17, 2006 and December 17, 2006. Requests
for additional information were received from NCDWQ on August 1 2006 October 2 2006
January 16, 2007, and April 5, 2007. On June 4, 2007, NCDWQ notified Four Winds
Development that the permit application was returned due to lack of requested information.
All information originally submitted to the US Army Corps of Engineers was verbally confirmed
and no further information was requested. The USACE issued a Notification of Jurisdictional
Determination on January 6, 2006 (Action ID 200620267).
V. 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.
None.
VI. 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.
Page 3 of 8

1. Provide a written description of the proposed impacts: Permanent impacts to streams
totafing 120 linear feet are anticipated for this groiect Impacts to the stream include two 50
linear foot HDPE culverts and a 20 linear foot dissipater gad.
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,
canaratPly list im»acts tine to hnth stn~chtre 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)
Cobblestone Wa Fill and Culverts Freshwater Marsh no 0 <0.001

Total Wetland Impact (acres) <0.001
3. List the total acreage (estimated) of all existing wetlands on the property: 0.22 acre
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
mn.ct hP inclnrlerl Tn calculate acreage_ multiply length X width. then divide by 43.560.
Stream Impact Number
(indicate on map)
Stream Name Type of
Impact Perennial or
Intermittent? Average
Stream Width
Before Im act Impact
Length
(linear feet) Area of
Impact
(acres)
Cobblestone Way UT To Little River culverts Perennial 4 feet 120 0.009

Total Stream Impact (by length and acreage) 120 0.009
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 Pxcavatinn rlreduina flnnding_ draina~e_ bulkheads. etc.
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)

Total Open Water Impact (acres) 0
Page 4 of 8

6. List the cumulative impact to all Waters of the U.S. resulting from the project:
Stream Impact (acres): 0.009
Wetland Impact (acres): <0.001
Open Water Impact (acres): 0
Total Impact to Waters of the U.S. (acres) 0.009
Total Stream Impact (linear feet): 120
Isolated Waters
Do any isolated waters exist on the property? ^ Yes ®No
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.
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
Describe the method of construction (e.g., dam/embankment, excavation, installation of
draw-down valve or spillway, etc.):
Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond,
local stormwater requirement, etc.):
Current land use in the vicinity of the pond:
Size of watershed draining to pond: Expected pond surface area:
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 proposed Cobblestone
Wav road crossina was strateaically placed upstream of a larae wetland. It was also placed
perpendicularly to the stream to minimize stream and buffer impacts.
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
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
Page 5 of 8

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 maybe 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
i~:ti}: !it?cl.enr.state.rec.us/r~cti~etlands-strm~idc.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.
No mitigation is 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 11ttp:,~,%h2o.enr.state.7~c,us%wrplindex.htm. If use of the NCEEP is proposed, please
check the appropriate box on page five 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 ofNon-riparian wetland mitigation requested (acres): n/a
Amount of Coastal wetland mitigation requested (acres): n/a
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)?
Page 6 of 8

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 ^
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
(Neuse), 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 multipliers.
Zone* Impact
(s uare feet) Multiplier Required
Mitigation
1 10,112 3 (2 for Catawba) 0
2 11,676 I.5 0
Total 21,788 0
* Zone 1 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
Riparian Buffer Restoration Fund). Please attach all appropriate information as identified
within 15A NCAC 2B .0242 or .0244, or .0260. Mitigation for riparian buffer impacts will
consist of replantina Zone buffers with woody vegetation to provide a density of 360 stems
per acre at year 1 and 260 stems per acre at year 5. Both Zone 1 and Zone 2 will be
seeded with a mix of native wetland grass species. Please see attached restoration plan
and figure
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
Page 7 of 8

impervious level. Total acreage on site: 17.56 Acres. Impervious areas: existing=0;
proposed=2.018 Acres; 2.018 Ac/17.56 Ac = 11.49%. Proposed impervious surfaces include:
total roads: 1.14 Acres; houses: 1,250 SF per lot; Deck/Patio: 200 SF per lot; Driveway &
Walks: 1,100 SF per lot for 13 lots. Best Management Practices, such as curb-less streets and
level spreaders, are incorporated into the plans to alleviate concentrated stormwater runoff.
Please see attached level spreader plans and NCDENR Division of Land Resources approval.
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.
Sewage from each lot will be treated by individual on-site septic systems.
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 ^
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
la~tl~ la~c> c,~~r:s~ateAnc;_zrs_'a~c~~ttlanc~s. If no, please provide a short narrative description: No
further development or new phases of the subdivision are anticipated.
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).
~~ ~ ~ ~~ ~' ~ ~- ~ 0
Applicant/Agent's Signature Date
(Agent's signature is valid only if an authorization letter from the applicant is provided.)
Page 8 of 8

fo~.~r W.ix~ds `
o~r~~~op~~Nr
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July 25, 2007
EcoScience Corporation
1101 Haynes Street, Suite 101
Raleigh, t`IC 27604
Dear Sir or Madam:
We have employed EcoScience Corporation for the purpose of representation on our behalf for 401 /
404 certification. This certification regards Cobblestone subdivision in Youngsville, North Carolina,
Franklin County.
Sincerely,
~. ~:''
Monte L. Perry
Manager, Four Winds Development, LLC
Office: 919-954-8383 ^ Fax: [phone] ^ 1304 Paddock Dr. Suife F-103 Raleigh, NC 27609
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Date:
PROJECT LOCATION ES EBB
JULY 2007 w
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EcoScicnce Cobblestone Subdivision i°=2oo0~
Corporation Franklin County, North Carolina ESC ProjectNo.:
Raleigh, Nonh Carolina 07-360

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Scale:
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Corporation Franklin County, North Carolina ESC Project No.:
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WILMINCTC~N DIS'T'RICT
Action JD. 200620267 County: Franklin U.S.G.S. Quad; Rolesville
NC)TIFICA'TION OF JURISDICTIONAL DETERMINATION
Property Uwner/Agent: BMJ Consulting
Address: Attn: Mr. Mike Jones
100 Richmond Place
Yaungsville, NC 27596
Telephone Nn.: (919) 730-608b
Property description:
:Size (acres) 15,75 Nearest 'Town Younr=svilIe
Nearest Waterway UT to the Little River River Basin Meuse
USGS I-iL'C 03020201 Coordinates N 35.998 W 78.430
Location description Tarboro Road Subdivision~aear Zachary C.ane,~ southwest of SR 1X00 tTarboro Road as
shown on the subtnittcd drawinss.
Indicate Which of the FOIlO~tvin~ Apply:
. _ Based on preliminary information, there may be wetlands on the above described property. We strongly suggest you have
this property inspected to determine the extent of Department of the Army (DA) jurisdiction. To be considered final, a
jurisdictional determination must be verified by the Corps. This preliminary determination is nut an appeatable action
under the Regulatory Program Administrative Appeal Process (Reference 33 CFR Part 331).
"there are Navigable Waters of the United States within the above described property subject to the permit requirements of
Section 10 of the Rivers and Harbors Act and Section 404 of the Clean Water Act. Unless there is a change in the law or
our published regulations, this determination may be relied upon for a period not to exceed five years from the date of this
notification.
'T'here are waters of the IJ.S. including wetlands ou the above described project area subject to the permit requirements of
Section 404 of the Clean Water Act (CWA)(33 USC § 1344). Unless there is a change in the law or our puhlished
regulations, this determination tuay be relied upon for a period not to exceed five years from the date of this notification.
__ We strongly suggest you have the wethliuds on your project area delineated. Due to the size of your property and.~or our
present workload, the Corps may not be able to accomplish this wetland delineation in a timely mariner. Pot a more timely
delineation, you may wish to obtain a consultant. 'To be considered final, any delineation must be verified by the Corps.
_ The waters of fife tJ.S. including wetland on your project area have been delineated and the delineation has been
verified by the Corps. We strvngty suggest you have this delineation surveyed. Upon completion, this survey should be
reviewed and verified by the Corps. Once verified, this survey will provide an accurate depiction of all areas subject to
CWA jurisdiction on your property which, provided there is no change in the law or our published regulations, may be
relied upon for a period not to exceed flue years.
;~ T'he wetlaluls have been delineated and surveyed and are accurately depicted on the plat signed by the Corps
RcUUlatory Official identified below on T><ecember• 5, 2005. Unless there is a change in the taw or our published
retnrtations, this detcr-minatiou may be relied upon for a period not to exceed five years from the date of this notification.
_ "There are no waters of the IJ.S., to include wetlands, present on the above described project area which are subject to the
permit regtrirernent5 of Section <t04 of the Clean Water Act (33 tJSC 1344). Unless there is a change in the Iaw or our
published regulations, this determination may be relied upon for a period not to exceed five years from the date of this
riotificatiou.
_ "i'he property is located in aue of the 20 Coastal Counties subject to regulation tinder the Coastal Area Management Act
(CA~~IA). You should con#net the Division of Coastal iWtanagement in Wilrniugton, NC, at [phone] to determine
#heir renuir.~tttcnts,

Action ID. 200b202b7
Placement of dredged or fill material within waters of the US and/or wetlands without a Department of the Army permit may
constitute a violation of Section 301 of the Clean Water Act (33 USC § 1311}. Tf you have any questions regarding this
determination and/or the Corps regulatory program, please contact Eric Alsmeyer at (9191 876-8441 ext. 23.
Basis For Determination: The study area contains a stream channel of an unnamed tributary of the Little River, a
Remarks:
Corps Regulatory Official:
Date 01/06/2006
~C
Expiration Date O1/06/2011
Copy furnished (with drawings): Delineations Plus
ATTiv': Mr. Jonathan Hopkins
PO Box 3097
Chapel Hill, NC 27515-3097
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North Carolina Division of Water Quality -Stream Identification Form; Version 3.1
Date: p~- Project: ~db es~~ G t,gS,,N Latitude: 3~_ onoos'~
Evaluator: ~QA- ~~ 'Qj ~ Site: u'~ ~ L;~t'(.c (~,~~ Longitude: -~ K•'•F3tSS(o
Total Points: Other:
stream is at least intermittent o2 g.~ County: ~
if>_ 19 or erennial if? 30 ~~ K!-'~ e.g. Quad Name:
Po.aa~.~ t ~Irr T~ c
A. Geomorphology (Subtotal = IZ-~> ) Absent Weak Mod rate Strong
1a. Continuous bed and bank ^ 0 ^ 1 2 ^ 3
2. Sinuosity ^ 0 1 ^ 2 ^ 3
3. In-channel structure: riffle-pool sequence ^ 0 1 ^ 2 ^ 3
4. Soil texture or stream substrate sorting ^ 0 1 ^ 2 ^ 3
5. Active/relic floodplain ^ 0 ^ 1 2 ^ 3
6. Depositional bars or benches ^ 0 ^ 1 ^ 2 [~~
7. Braided channel 0 ^ 1 ^ 2 ^ 3
8. Recent alluvial deposits Q O 1 ^ 2 ^ 3
9a. Natural levees 0 ^ 1 ^ 2 ^ 3
10. Headcuts [~ ^ 1 ^ 2 ^ 3
11. Grade controls 0 ^ 0.5 ^ 1 ^ 1.5
12. Natural valley or drainageway ^ 0 ^ 0.5 ^ 1
13. Second or greater order channel on existing
USGS or NRCS map or other documented
evidence.
a.
No = 0 ~
Yes = 3 ^
...u.. .~....vv v~.v..vv u~V ~~V• ~uw , VV ViJV~aJJ~Vi1J III IIIOII4P1
B. Hvdroloav (Subtotal = ~-~ ~
14. Groundwater flow/discharge ^ 0 1 ^ 2 ^ 3
15. Water in channel and > 48 hours since rain, or
Water in channel -dry or growing season
^ 0
^ 1
®''~
^ 3
16. Leaflitter ^ 1.5 ^ 1 .5 ^ 0
17. Sediment on plants or debris ^ 0 ^ 0.5 1 ^ 1.5
18. Organic debris lines or piles (Wrack lines) ^ 0 0.5 ^ 1 ^ 1.5
19. Hydric soils (redoximorphic features) present? No = 0 ^ Yes = 1.5 [~
C. Bioloav (Subtotal = /(~~ ~ )
20 . Fibrous roots in channel ^ 2 ^ 1 ^ 0
21 . Rooted plants in channel 3 ^ 2 ^ 1 ^ 0
22. Crayfish 0 ^ 0.5 ^ 1 ^ 1.5
23. Bivalves 0 ^ 1 ^ 2 ~ 3
24. Fish ^ 0 ^ 0.5 ^ 1 .5
25. Amphibians ^ 0 ^ 0.5 ^ 1 [~- -4,y"
26. Macrobenthos (note diversity and abundance) 0 ^ 0.5 ^ 1 ^ 1.5
27. Filamentous algae; periphyton ^ 1 ^ 2 ^ 3
28. Iron oxidizing bacteria/fungus. 0 ^ 0.5 ^ 1 ^ 1.5
29b. Wetland plants in streambed FAC = 0.5 ^; FACW = 0.75 ^;
Other = 0 ^ OBL = 1.5 SAV = 2.0 ^;
••~•~•~ ~~ ~.~~ .-. ..~........~~ .~~.. F.~.:JV~wc v~ uNiai~u N~mna, ncn~ ca iuuuaCS un tnC NItlSCnGe OT agUBIIC Or WeLIanQ plan[S.
Notes: (use back side of this form for additional notes.)
~is4~ ~ sCa~Qta~E -~sG~ ~
Sketch:
obb1~~Q.~ ~y
:{ ~ ~ -~ ,
~~ ,' i
I# ~~a~~.

USACE AID#
DWQ #.
Site # (indicate on attached map) III
~ ~ ~ ~ ~ STREAM QUALITY ASSESSMENT WORKSHEET ~ ' ~
Provide the following information for the stream reach under assessment:
1. Applicant's name: MaI+C PPI ry 2. Evaluator's name: ~C©~erl~V~'L° ` ~T~~iU~S
3. Date of evaluation: ~ ~~ ~~ ~ 4. Time of evaluation• ~D ° 3D
5. Name of stream: V
7. Approximate drainage area: ~~` f^~`~~ ~ ~• ~ h'`' Z
9. Length of reach evaluated: ~
9 -oooo ~
11. Site coordinates (if known): -~-8-q'S~55~
6. River basin: ~`~ ~'-'
8. Stream order:_~
10. County: ~'` ~``"^
12. Subdivision name (if any):CPiynaS-e~~ Cc~66(eJ~~
13. Location of reach under evaluation (note nearby roads and landmarks and attach map identifying stream(s) location):
SQV~~ti ~ To-r6vrn ~eC (S(G <<OQ~ No%~ o~ M,ot7re `S ~~~-. 32 n-~~~, /~
~ a f~ G-~ ,r~„srr.? raj 112.
14. Proposed channel work (if any):~~

15. Recent weather conditions: NA ~' Q N cX Cl'O~~l
16. Site conditions at time of visit: ~ oV A t lC><5'~"
17. Identify any special waterway classifications known: -Section 10 -Tidal Waters -Essential Fisheries Habitat
-Trout Waters -Outstanding Resource Waters / Nutrient Sensitive Waters Water Supply Watershed ~(I-IV)
18. Is there a pond or lake located upstream of the evaluation point? YES If yes, estimate the water surface area:
19. Does channel appear on USGS quad map? ~ NO 20. Does channel appear on USDA Soil Survey? YES NO
21. Estimated watershed land use: ~ ~ % Residential _% Commercial _% Industrial ~~ % Agricultural
~~ % Forested C b % Cleared /Logged % Other ( i
e ~
22. Bankfull width: ~~ 23. Bank height (from bed to top of bank): 1
24. Channel slope down center of stream: Flat (0 to 2%) _Gentle (2 to 4%) -Moderate (4 to 10%) -Steep (>10%)
25. Channel sinuosity: Straight /Occasional bends -Frequent meander -Very sinuous -Braided channel
Instructions for completion of worksheet (located on page 2): Begin by determining the most appropriate ecoregion based on
location, terrain, vegetation, stream classification, etc. Every characteristic must be scored using the same ecoregion. Assign points to
each characteristic within the range shown for the ecoregion. Page 3 provides a brief description of how to review the characteristics
identified in the worksheet. Scores should reflect an overall assessment of the stream reach under evaluation. If a characteristic cannot
be evaluated due to site or weather conditions, enter 0 in the scoring box and provide an explanation in the comment section. Where
there are obvious changes in the character of a stream under review (e.g., the stream flows from a pasture into a forest), the stream may
be divided into smaller reaches that display more continuity, and a separate form used to evaluate each reach. The total score assigned
to a stream reach must range between 0 and 100, with a score of 100 representing a stream of the highest quality.
Evaluator's Signature Date_ ~~3~~~
This channel evaluation form is intended to be used only as a guide to assist landowners and environmental professionals in
gathering the data required by the United States Army Corps of Engineers to make a preliminary assessment of stream
quality. The total score resulting from the completion of this form is subject to USACE approval and does not imply a
particular mitigation ratio or requirement. Form subject to change -version 06/03. To Comment, please call 919-876-8441 x 26.

STREAM QUALITY ASSESSMENT WORKSHEET

#
CHARACTERISTI
S ECOREGION POIN T RANGE
C SCORE
Coastal Piedmont Mountain

1 Presence of flow /persistent pools in stream
0 - 5
0 -
0 - 5
no flow or saturation = 0; stron flow = max oints
2 Evidence of past human alteration 0 - 6 0 - 5 ~ 0 - 5
'
extensive alteration = 0; no alteration = max oints ; v

3 Riparian zone
0-6
0-4,
0-5
no buffer = 0; Conti ous, wide buffer = max oints

4 Evidence of nutrient or chemical discharges
0 - 5 I
0 - ~
0 - 4
extensive dischar es = 0; no dischar es = max oints Q,t,
,,,~
5 Groundwater discharge
0-3
~ 0-4~
0-4
U no dischar e = 0; rin s, see s, wetlands, etc. = max oints Y
~ 6 Presence of adjacent floodplain 0 - 4 0 - 4 '~ 0 - 2
y no flood lain = 0; extensive flood lain = max oints
a ~ Entrenchment /floodplain access 0- 5 ~ 0- 4 ~ 0- 2 p

de 1 entrenched = 0; fre uent floodin = max oints
3 j
8 Presence of adjacent wetlands
j 0- 6 0- 4 0- 2
no wetlands = 0; lar a ad
acent wetlands = max oints

9 Channel sinuosity
0 - 5 ; °
0 - 4
0 - 3
extensive channelization = 0; natural meander = max oints ~ ~

10 Sediment input
0 - 5
0 - 4 ~
0 - 4
extensive d sition= 0• little or no sediment = max oints

:.
11 Size & diversity of channel bed substrate ~ i ~, ~
~-.I~ `
0-4
0-5

fine homo enous = 0• Iar a diverse sizes = max rots ~
~. ~~ ~: 1.4 ~
~• ~
~';~
12 Evidence of channel incision or• widening
0-5
'0-4
0-5
~ d I incised = 0• stable bed. & banks = max rots
,,~,{,,
13 Presence of major bank failures
0-5 ~
~ 0-5
0-5 ._.

'
severe .erosion = O; no erosion, stable banks.= max oints ~ J

14 Root depth and density on banks
0 - 3
,S 0 - 4
0 - 5
~.
E-*' no visible roots = 0; dense roots: throu out= max oints
~?~
15 Impact by agriculture, livestock, or timber production
'
0 - 5
_
0 - 4
0 - 5
substantial
act ~; no evidence = max rots

-!
16 Presence of riffle-pooUripple-pool complexes
0-3
1
0-5"
0-6
J
no rii~les/ri les or is = 0; well-develo d = max oints
~. I ~ Aabitat complexity 0- 6 ~ 0- 6 0- 6
little or no habitat= 0; fr uent, varied habitats = max oints
18 Canopy coverage over streambed 0- 5 0 5 0- 5
no shadin ve etation = 0; continuous cano = max oints Z

19 Substrate embeddedness ~~~~ ~ ~ s 0 - 4 0 - 4
de 1 embedded = O; loose structure = max , .., ,.~`~.~ ~ sr 3
~ '-
20 Presence of stream invertebrates (see page 4)
0 - 4
0 - 5
0 - 5
~
~+; no evidence = 0• common numerous es = max rots
C7
21 Presence of amphibians
0-4
0-4
0-4
3 -' a
Q no evidence = 0• common, numerous s =max. rots

22 Presence of fish
0-4
0-4
0-4
~ no evidence = 0; commo numerous es = max rots 3

23 Evidence of wildlife use
0-6
0-5
0-5
(no evidence = 0; abundant evidence = max oints
Total>PointsPossible •.. ~.: -;- ;: `IQO=x :; ~ 10(1 .
'TOTAL SCORE °(also enter on'first paged ~' ~~
GMtau
r
;~ ~.
* These characteristics are not assessed in coastal streams.

COBBLESTONE SUBDIVISION
RIPARIAN BUFFER RESTORATION PLAN
Prepared for:
Charis Development
Prepared by:
EcoScience
EcoScience Corporation
1101 Haynes Street, Suite 101
Raleigh, North Carolina 27604
September 2007

TABLE OF CONTENTS
1.0 INTRODUCTION .............................................................................................................1
2.0 PLANTING PLAN ............................................................................................................1
2.1. Site preparation and mulching .....................................................................................1
2.2. Species Acquisition and Planting .................................................................................1
2.3. Zone 1 and Zone 2 Seeding ........................................................................................3
2.4. Vegetation Maintenance ..............................................................................................3
3.0 MONITORING REPORT .................................................................................................3
LIST OF TABLES
Table 1: Planting Plan .................................................................................................................2
Table 2: Seeding Mix for Zone 2 .................................................................................................3
Cobblestone Subdivision ii Restoration Plan

Cobblestone Subdivision
Riparian Buffer Restoration Plan
1.0 INTRODUCTION
Charis Development is developing the Cobblestone Subdivision in Franklin County, North
Carolina. The development is located Site is located approximately 2.5 miles east of
Youngsville on Tarboro Road (SR 1100) between Moores Pond Road (SR 1106) and Mays
Crossroads (SR 1105). Restoration of woody and herbaceous cover is proposed to address
impacts to Neuse River riparian buffers.
2.0 PLANTING PLAN
The planting plan (See Figure 1) attempts to maximize the chances for success by site
preparation, using mulches, and choosing native species that have appropriate tolerance to on-
site moisture conditions.
2.1. Site preparation and mulching
Site preparation consisting of topsoil amendment and soil scarification are recommended for
this project since soil clearing and compaction have occurred. Topsoil will be imported into the
site and spread over planting areas before scarifying or disking the soil surface.
Organic mulch or compost will be used around individually planted trees and shrubs. Mulch and
compost is available through the Wake County yard waste disposal site. This type of mulch
shows good results in weed control, and is perhaps the most aesthetically pleasing material for
the high visibility areas. Mulching also limits surface erosion, suppresses weeds, retains soil
moisture, and can add some organic material to the soil following decomposition. However,
organic mulches, particularly those based on wood, have a high nitrogen demand because of
the biochemical reactions of decomposition. The mulch should be in a form (coarse) that is
relatively slow to break down, which will reduce the nitrogen depletion of the soil. Additionally,
mulch applications require a minimum 6- to 8-inch thickness in order to suppress weed growth.
The mulch layer should not be placed or mounded directly against the base of plants, thereby
avoiding possible fungal infections, rodent damage, and other problems. Mulch must be applied
in a five-foot diameter circle around planted trees and shrubs, or to the extent of the drip line,
whichever is greater. This woody, organic mulch should not be placed on seeded areas
between trees.
2.2. Species Acquisition and Planting
Material obtained for planting will be at least 3-gallon container size. The larger size is needed
to prevent trees from washing away on the sloped banks of the UT to Little River. Species
selected for planting will be dependent upon availability of local plant material sources. The
stem count for unavailable species should be distributed among the other target elements
Cobblestone Subdivision 1 Restoration Plan

based on the total trees needed. The total number of species planted in Zone 1 areas should
be at least 3. Table 1 lists the species and quantities of material needed for Zone 1.
Planting in Zone 1 will result in a density of 360 stems per acre (at 11-foot centers). Planting
will be performed in late autumn to early spring to allow plants to stabilize during the dormant
period and set root during the spring season.
Tahla 1 • Plantinn Plan
Plantin Area Zone 1
Area 0.2 acre
Stems per Acre 360
Species # planted
Cano S ecies
River birch Betula ni ra 6
Green ash Fraxinus enns Ivanica 6
Sycamore Platanus occidentalis 6
Cherr bark oak Quercus a oda 6
Willow oak Quercus phellos 6
Subcanopy Species
Ironwood Car inus caroliniana 15
Flowerin do wood Cornus florida 15
Total 60
Some non-commercial elements may no[ oe iocauy avauaoie ar me rime or pianuny. i ne stem count rot unavdnaoie species
should be distributed among other target elements. The number of species should total at least 3.
Survival of new plantings can be difficult under the best of circumstances. The following is a list
of common errors that should be avoided in order to give the new planting the best chance of
survival.
Care Errors
Overheating from direct sun
Material drying out from not being planting soon enough
Wind exposure to roots, resulting in desiccation
Failure to keep roots moist during temporary storage
Planting Errors
Planting too deep or shallow -material must be planted at the same depth as in the original
container and at the existing soil surface elevation. Elevating or mounding of planted
material or construction of berms around stems is not advised.
Planting in duff rather than in mineral soil
Failure to allow good root spread in planting hole
Soil packed too loosely
Improper spacing
Other Errors
Failure to control competing vegetation, especially grasses
Incorrect match of species and site
Planting at the wrong time of the year
Failure to provide full sunlight for species that require it
Cobblestone Subdivision 2 Restoration Plan

2.3. Zone 1 and Zone 2 Seeding
In addition to the planting of woody vegetation, Zone 1 and Zone 2 areas will be seeded with
grasses. Grass seed will be a blend of the species listed in Table 2. Species and proportions
selected will depend on availability and planting dates. Grass seed will be mulched with blown
straw or other appropriate means. Other disturbed areas of the site will be seeded and
stabilized per NCDENR specifications.
Table 2: Seedina Mix for Zones 1 and 2

Species
Rate Optimal
plantin dates
Switch rass (Panicum vir atum) 10-15% of total mix Apr 1 - Au 15
Indian rass (Sor hastrum nutans) 10-30% of total mix A r 1 - Au 15
Deerton ue (Dichanthelium clandestinum) 5-25% of total mix Apr 1 - Au 15
Bi Bluestem (Andropo on erardii) 10-30% of total mix Apr 1 - Au 15
Little Bluestem (Schizachyrium scoparium) 10-30% of total mix Apr 1 - Au 15
Sweet Woodreed (Cinna arundinacea) 1-10% of total mix Apr 1 - Au 15
Rice Cut rass (Leersia o zoides) 5-25% of total mix Apr 1 - Au 15
Indian Woodoats (Chasmanthium latifolium) 1-10% of total mix Aug 15 -Oct 15
Feb 15 -Apr 1
Virginia Wildrye (Elymus virginicus) 5-25% of total mix Aug 15 -Oct 15
Feb 15-A r1
Eastern Bottlebrush Grass (Elymus hystrix) 5-10% of total mix Aug 15 -Oct 15
Dec 1 -May 1
2.4. Vegetation Maintenance
It is important that the plant material be checked frequently to ensure that the material is alive
and growing satisfactorily. Planted vegetation may require watering, pest control, or similar
measures during the first few years of establishment. The necessity and extent of these
measures will be determined upon successive monitoring studies. Monitoring plans at the site
should identify problem areas and remove any invasive vegetation that develops to allow
desirable trees and shrubs to grow more rapidly.
3.0 MONITORING REPORT
Vegetation monitoring will occur at yearly intervals in the fall, beginning with an As-Built Plan at
project completion and for five years thereafter. After planting has been completed in winter or
early spring, an initial evaluation will be performed to verify planting methods and determine
initial species composition and density. Supplemental planting and additional site modifications
will be implemented, if necessary. Three plots, 30 feet square, will be established on the
replanted areas of the site. Stem counts of all planted woody material within the plots will be
made, and the results extrapolated to calculate survivorship over the entire site. For Zone 1,
Cobblestone Subdivision 3 Restoration Plan

survivorship must -total 360 stems per acre at Year 1, and 260 stems per acre at Year 5. If
vegetative survivorship does not meet these goals, supplemental planting will be performed as
needed until the success criterion is achieved.
Monitoring reports will be submitted at the end of each monitoring year. Each report will include
a compilation of collected data in tabular and photographic format.
Cobblestone Subdivision 4 Restoration Plan

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Rpr 04 2006 12:23PM EDENS ENGINEERING PC [919) 844-1323
APR-04-2006 TL1E 12 24 PM DENR RRO FAK N0. 19195714719
NORTH CAR4[.INA
DEPARTMENT ~~ ENYIRONMf Nrt
AND NAT~RAI RLSQURCES
Raleigh Regional O~ffi~e
Mlahael F. Easley, ~o7rsmar
Wt~lant G. Rays, Jr., Sect~tary
HMi Cows
FWT wiark Devo[opment, LLc
loo>u~oaa ix.
Youagsviik, NC 27596
AT [N: Michsel.loaes
Deaf Mr. Jot-es:
DIVISION OF LAND ItJsSOURCEB
Matr1- 24, 2006
LETTER OF AP>•ROVAL
RE: Pra¢eat Natra; Cobbltattotae PhI
County: Fraa[dia
Submitted by: Bdat~ EnEtneeriag
Gate Received: 2.24-06 do 3-22-06
pact Processing initiated; 3• iS-06
Wetushod: Naaakl/03.04.06
New Submittal ( x) Revised ( )
P. O1
'Itis office has reviewed the subject F.tosion and Scduneatatiott Casdtol' Pion. We find tf~e plain m ba
aeooptabk and hereby i'we ties leer aC appnoral. If any modifiealiong, perfartttmtoe telGrvationa, or
iacauunevidatioot are appiicabit, a fist is es~iased and is incdrpwarted as a part a+F this letter off' approval. 7'!ve
enoloaod Ccrti6cata of ApFroval should ba pealed os the jab slue. in addition, it should be Aopad that tlds plan
approval shall mcpit+s thtx (3) yeora EolioNVing the date of eppRwei, if no Imd-d'isasbi~ activity i~a beeo
undataloen, itt aococdaroe with ?itlo 15A, Noreb Carolias Administtativt Code (NCAC) 4B.0029.
if oDy modi6eetiore are not ineorporatod inter the plan And implattattod in the field, the ate wi0 be id
violation of the 5e~me~lation Poliutiati Control Ad of 1973 (NorW Carotins Gpural Ststutc {NCGS),
113A-61.1).
1 SA NCAC 48, 001 B(a} re9uirea that a copy of the oDpto~vod plan be on Ede at the job site. Also, this
letter glees the notice rogsuired by NCl.yS i 13A.61.1{a) oonoeming our right to perform peaiodic mspectiona
to ensure aoa~pliaocC vrith tht: appnovod plan. "
1628 UMtfl 8et~it~ Cwrtler, itrtlpipit, North t.ttr~o0na Z769fw1flZs
PhoAS: ~1t~b71•d7'00 ! F/1X: 91WQ71d71E / Itntantsl: www.enr.t>tab.tw.ttdENR/
p.l
/W Et~tML O/*ORrtJIMrydAFfA1~MT1Yi~ wCri01M EAFL0117f~60li I ~EC'rCRE~f0~1~ Pb~'T COMI~f~INrER /API~t
~ cx+o~w +R of
ENV~RO++Mey+r N+o NmuRK. acts

Flpr 04 2006 12:23PM EDENS ENGINEERING PC f919) 844-1323
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Jonas
A~larcb Z4,1Ut16
Page 2
Natb Carolina's seclme~tation pollativn conhol program is ~ oriented. r~S
proaecuon of the fugues! resattccos and s~jokin8 prapatiea. if at goy tinge during figs project it is ddd
that the grasion and Sodanentatian Control Platt is inadequetc to moot the requa~ of the Seriinaartadon
Polludan t.,orttrol Aa of l9?3 (NCGS 113A-S t through fib'), this office may req>nre trwisiaas in the Ply ~
its implernettfation to~~st~e ootnphaocewiththe Act.
Acceptance a>rd appravat of this plan is eowditianed upon your ovmnpliance with spplicabk federal
attd start water goality laws, negulatia~ and rules. This could iuclttde the I?ivisioet of Water Qmaiity ta>rier
stottnnxater ~ adw splci$c water quality standards, and the U.S. Army Corps of F,agiaeers under Aitick
4a4 jurisdiaiorr. Oar approval does not sttpersodo gay other soqu~f paatit or apPra"al.
Sir-oe this psajoct disturbs age or more acres, oae such approM1'al t~elstes to the soomnwabar that will
discharge from y~ projoc•t. This tusoff is permitted pntauastt to fire Natioual PoQutmt Dixhatgc
Eliatinatirxt System {NPDFS) adroittistcrtd in Naclh Ceralitta by d+e Division of Watar Quality (DWQ). The
Cad Stormraaoer NPDES Ptrtuit, NCGt) IOOt)0, as review, covering your activity is attarJted. You are
trapoosible for taa~plyiug a-itb the Geneses! Permit nequir+ernettta amd aK sttbjoct W enfmioetnaaR by DWQ far
aeryr vdolatiaas of ttu Gtrttral Petmtt.
Pkeae note that this approval is based ia•part ea the accuracy of the infarmatiaas pm~vided coneerr~g
financial reapoasi5ility. Yaa ore r+cquestal to ftle as ameiedod Firutneial Responsibility l+am if,bay chsog~es
become naeaauy. In eKlditian, it would bo hetpfal if yott would notify this offices whren the proposed land-
disturbiog activity cavarod by this plan is initiated.
Yaar cooperation is spptbcioted and vre laoQ forward to working with yeses oa this projext. ff there arr
++oy ~ pttatse do riot hesitate m eottract thus office.
Sirtceroiy,
X.; Hatlcy,.ir, P.E,, CP C
Bttginoer
Land Quality Section
Raleigh Rsgiaml0fl"ice
p.2
!LH
cc: Mr, !rated F,deas. P.E.

' Apr 04 2006 12:23PM EDENS ENGINEERING PC (9191 844-1323
APR-04-2006 TUE 12:26 PM DENR RRO FAK N0. 19195714718
l.md c~lity Saxia~
RaleigL Reg~tal ~tLoe
Departtnaa of Emriroomaat and I~swral Resvuroes
1618 lvlail 5erviee Center
Raleigh, North Catalina 27699-1628
PLAN REVYEW CaMhl~NTS
PloRn+ CMptw- oe+~wr+~r oR
CNNNONPiFif-AMO N~OTJMiY. RF3Ctll~ls
P, 03
Project Name: Cnbblesmne Phase 1 Ykte Received: 2-24-06/3.22-06
Courtly: Y~tannfClin Date Processing Initiated. 3-~ 5-06
Watershed: Ngus~1L03-04-06 Reviewed By.~
New $nbtttit4l(x) Revised ~) Approved (x) Disapproved ( )
Ratsa~ns for Disapproval() ModiHcations(x) Prafoxmance Resetvatioas( )
(l) Based on the submitted data, alt swates must be provided adtly the proposed temporary liner,
installed per the a~ctoeed detail! or an acceptable atterttate.
{2) The proposed custom basins must have ba~ea~ and sptUways lined in accordance witb the
oadoaed detail or an acceptable alternate.
(3) All rip-rap must beat least NGDQT class B.
(4) Basis #lttutst hava a ttdtitnum surface area of 40' x 60', and Basin #2 must have a nvnimum
surfiece area of 4S' x SO',
p.3

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NETS AND MATS
Nep alone gtxvaftY provitk lillle moisture tans~on.benefts ~nQ only
hmitodor'Daian psotectiau. Therefore, rhey are usudly used in eonjunetioa wait
• >n orpnle mrtleh sues as scow.
Encept when wood fiber durey is uead, rtetring shout always ba iasWlod over
the mtrldr. Wood frbt:r may be sprayod on mp of an iaatalfed set.
Male. itxWdiaa 'acelsior" (w^ood Aber) btada;~. aso considered protat;vc
rnulehos and may be uai:d alono, O+r erodible soils, and during all timer oI dte
year. Place ltio marlin; in Gem eontnat with the soil snd staple securely.
INSTALLATIUtV Op NETTING AND MATTING
Produea Ot:sirned to caaaol erosion ahowd ba 4tsmlled in aceocdatrce with
msnufaaarq'S inawctions. Any mat ar btattltu-type p+oducr used as a prmea
rive mulch should provide cause of of Icast 3t19i of the su:faa whore i1 is ap•
plir4. tessaliadon isilrustraeed in Rgvta 6.14x.
1. Apply Greta. Leniliaer ant! seed eefere laying the rrcr Ot more.
Inchannels, roll oul ships a1 netting parallel tothe
direction of Clow and over the proteeuve mulch
! Anchor netting in
! a fr{nch trench.
1B"
overlap Joirtstripsby.anchtxing
Pros. a.l~^ Itr-IaaaAOn or na16++Y and etarinp (raoQdkO awn Ya tkr. of Fansayl. and v+~rl0pping.
--.~. 2,-Swt laying tlk net from rho top of the Channel or sbpe and anrott It down
she grade. A11ew nelthtg 1o by basely eln the Doll but wRhous wriaklati-da
not slrcteb,
3. To srtse rho not, bury rte uydopa and In a slot ar taeach nor kts Than d ins
edratieep; cover with soil, and ~P finaly u abowa in Fgttre6.l4.3tepk rite
net every i2 iaKpes tiCt058 dte lop end aM evcy 3 h arotut4 the tx7gcs and pot
sem. SNbrie 2 soda o[ net arc laid side by silo, the attjoCCnt tdga sha-!d be
overlapped 7 inches aed stapled losothcr. E soh strip of nea;nt should also be
stapiod town tbo center, eveay 3 [t. Ds cot slretcb th• nN when applying
staples,
4. To join two ships, cut a treneb to snrJrar the end of rho new net. t~vcHop ura
and oti the previous roll 1 g inches, u shown in ~gtna 6.iaa, and snple every
12;nclrsjuu babes the anchor att.
p.4
Maintenance IaspeetsllmulcMsperiodiully,andsdtarraiasrormstochakfeuriituosion,
ditl0oation, or Eailura Whore erosion is oDserven, apply additional amleh. tE
wasfrow aooars, rrpav dre atope grado, rescad, and roinsull mukh. Continue
inspOCtions well +~egeurienis firmly aswbitfhed,

+ ~ Rpr 04 2006 12:23PM EDENS ENGINEERING PC (9191 844-1323
APR-04-2006 TUE 12;27 Pt1 DENR RRO

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Level Spreader Narrative
Four level spreaders are proposed for the project to provide diffuse flow into the protected Neuse
River Buffers from the Cobblestone Development. The level spreaders were designed using the
latest design methods provided in the NCDWQ Stormwater Best Management Practices Manual,
July 2007. Each level spreader consists of a flow bypass structure, forebay and concrete level
spreader. A bypass channel is provided to safely convey the runoff from the 10-year storm
through the buffer and into the stream. Level spreader design worksheets, hydrologic and
hydraulic calculations, bypass channel and channel-lining designs are provided, along with
applicable figures and construction details. Zone 1 of the buffer will be established with grass,
and the existing Zone 2 vegetation is wooded. Impacts that have occurred in Zone 1 will be
restored with woody species.
An existing non-jurisdictional swale exists on-site that provided drainage from the watershed
during the pre-development condition (Drainage Area 5 -Figure 1). A portion of the runoff from
the site will be discharged into this existing conveyance. The total drainage area to the swale is
20.8 acres at the downstream-most point, including a significant portion of off-site runoff. As
shown on the included nutrient calculation worksheet, the nitrogen loading for the post-
development condition will not exceed the 3.6 lb/ac/yr limit required by the Neuse Nutrient
Rules. As the pre-developed site consisted of a significant portion of agricultural land, sediment
loading is expected to be reduced as a result of the development. The 10-year peak flow in the
existing condition was calculated to be 34.3 cfs, while the post-development flow is 38.0 cfs, a
difference of 10.8%.

DIVISION OF WATER QUALITY -LEVEL SPREADER WORKSHEET (112007)
I. PROJECT INFORMATION (please complete the following information): 0 ~0 ' ~ 1 l0 1 ~( 3
Project Name : Cobblestone Subdivision
Contact Person: Brian Burkhart, P.E. Phone Number: [phone]
Level Spreader ID: 1
Level Spreader Length 37 ft.
Drainage Area 2.19 ac.
Impervious Area 0.16 ac.
Forebay Area 14 sq. ft.
Maximum Filter Strip/Buffer Slope 8.0

Max. Discharge from 1"IHr Storm .56 cfs
Max. Discharge to Level Spreader 0.83 cfs
Filter Strip/ Zone 1 Buffer Vegetation Forested
Filter Strip/ Zone 1 Buffer Width 30 ft.
Filter Strip/ Zone 2 Buffer Vegetation Grass
Filter Strip/ Zone 2 Buffer Width 20 ft.
Bypass Method Used Q,o
(perpendicular to flow)
(on-site and off-site drainage to the level spreader)
(on-site and off-site drainage to the level spreader)
(0.2% of the contributing impervious surface area)
(6% for forested/leaf littler cover, 8% for grass/thick cover)
(Discharge rate from extended detention wetland or pond)
(Grass/Thick ground cover or Forested)
Please include a worksheet for this.
II. REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is
attached. If a requirement has not been met, please explain why. At a minimum, a complete stormwater management plan
submittal includes a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet
structure details, a detailed drainage plan and a fully executed operation and maintenance agreement. An incomplete
submittal package will result in a request for additional information and will substantially delay final review and approval of
the project.
A licants Initials
0`1 0~
&~
Project Site was visited prior to designing level spreader system.
Date of the Site visit. Please attach time-dated digital photos of existing buffer conditions.
Level spreader length is at least:13 ft. per cfs for thick ground cover /grass; OR 65 ft per cfs for 50-
footcanopied forest with leaf litter; 50 ft per cfs for 100-foot forested buffer; 40 ft. per cfs for 150-foot
forested buffer; OR a weighted average of the two vegetation types within the buffer/filter strip).
All ground cover types and their widths have been labeled on the construction plans.
All contours have been depicted on the construction plans.
No structures are located in protected buffers (must meet no practical alternatives criteria).
No draws are located in the buffer or filter strip in the vicinity of the proposed level spreader.
Construction details for the level spreader have been provided.
The operation and maintenance agreement signed and notarized by the responsible party is provided.
No practical alternatives explanation + Variance request. (Level Spreaders in Series only).
Bypass method used:
Bypass conveyance method is specified and construction details and calculations are provided.
Alternative design option is specified and plan details and calculations are provided.
Discharge to level spreader and subsequent filter strip is hydraulically and spatially separate from the
bypass discharge.
Construction details for the bypass and outlets are provided.

DIVISION OF WATER QUALITY -LEVEL SPREADER WORKSHEET (112007)
I. PROJECT INFORMATION (please complete the following information):
Project Name : Cobblestone Subdivision
Contact Person: Brian Burkhart, P.E. Phone Number: [phone]
Level Spreader ID: 2
Level Spreader Length 13 ft. (perpendicular to flow)
Drainage Area 0.34 ac. (on-site and off-site drainage to the level spreader)
Impervious Area 0.06 ac. (on-site and off-site drainage to the level spreader)
Forebay Area 5.2 sq. ft. (0.2% of the contributing impervious surface area)
Maximum Filter Strip/Buffer Slope 7.9 % (Ei% for forested/leaf littler cover, 8% for grass/thick cover)

Max. Discharge from 1"/Hr Storm 0.11 cfs
Max. Discharge to Level Spreader 0.24 cfs (Discharge rate from extended detention wetland or pond)
Filter Strip/ Zone 1 Buffer Vegetation Forested (Grass/Thick ground cover or Forested)
Filter Stripl Zone 1 Buffer Width 30 ft.
Filter Stripl Zone 2 Buffer Vegetation Grass
Filter Stripl Zone 2 Buffer Width 20 ft.
Bypass Method Used Q,o
Please include a worksheet for this.
II. REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is
attached. If a requirement has not been mef, please explain why. At a minimum, a complete stormwater management plan
submittal includes a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet
structure details, a detailed drainage plan and a fully executed operation and maintenance agreement. An incomplete
submittal package will result in a request for additional information and will substantially delay final review and approval of
the project.
Aoolicants Initials
~~ Project Site was visited prior to designing level spreader system.
~Sep}o~- Date of the Site visit. Please attach time•dated digital photos of existing buffer conditions.
~8 Level spreader length is at least:13 ft. per cfs for thick ground cover I grass; OR 65 ft per cfs for 50-
footcanopied forest with leaf litter; 50 ft per cfs for 100-foot forested buffer; 40 ft. per cfs for 150-foot
forested buffer; OR a weighted average of the two vegetation types within the buffer/filter strip).
68 All ground cover types and their widths have been labeled on the construction plans.
~~ All contours have been depicted on the construction plans.
~ No structures are located in protected buffers (must meet no practical alternatives criteria).
~- No draws are located in the buffer or filter strip in the vicinity of the proposed level spreader.
Construction details for the level spreader have been provided.
The operation and maintenance agreement signed and notarized by the responsible party is provided.
No practical alternatives explanation + Variance request. (Level Spreaders in Series only).
Bypass method used:
8~ Bypass conveyance method is specified and construction details and calculations are provided.
Alternative design option is specified and plan details and calculations are provided.

Discharge to level spreader and subsequent filter strip is hydraulically and spatially separate from the
bypass discharge.
`~B Construction details for the bypass and outlets are provided.

DIVISION OF WATER QUALITY -LEVEL SPREADER WORKSHEET (112007)
I. PROJECT INFORMATION (please complete the following information):
Project Name : Cobblestone Subdivision
Contact Person: Brian Burkhart. P.E. Phone Number: [phone]
Level Spreader ID: 3
Level Spreader Length 114 ft.
Drainage Area 5.76 ac.
Impervious Area 0.53 ac.
Forebay Area 46.2 sq.
Maximum Filter Strip/Buffer Slope 7.7

Max. Discharge from 1"/Hr Storm 1.40 cfs
Max. Discharge to Level Spreader 2.58 cfs
Filter Strip/ Zone 1 Buffer Vegetation Forested
Filter Strip/ Zone 1 Buffer Width 30 ft.
Filter Strip/ Zone 2 Buffer Vegetation Grass
Filter Stripl Zone 2 Buffer Width 20 ft.
Bypass Method Used Quo
(perpendicular to flow)
(on-site and off-site drainage to the level spreader)
(on-site and off-site drainage to the level spreader)
ft. (0.2% of the contributing impervious surface area)
(6% for forestedlleaf littler cover, 8% for grass/thick cover)
(Discharge rate from extended detention wetland or pond)
(Grass/Thick ground cover or Forested)
Please include a worksheet for this.
II. REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is
attached. If a requirement has not been met, please explain why. At a minimum, a complete stormwater management plan
submittal includes a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet
structure details, a detailed drainage plan and a fully executed operation and maintenance agreement. An incomplete
submittal package will result in a request for additional information and will substantially delay final review and approval of
fhe project.
A licants Initials
pH 0~
Project Site was visited prior to designing level spreader system.
Date of the Site visit. Please attach time•dated digital photos of existing buffer conditions.
Level spreader length is at least:13 ft. per cfs for thick ground cover I grass; OR 65 ft per cfs for 50-
foot canopied forest with leaf litter; 50 ft per cfs for 100-foot forested buffer; 40 ft. per cfs for 150-foot
forested buffer; OR a weighted average of the two vegetation types within the buffer/filter strip).
All ground cover types and their widths have been labeled on the construction plans.
All contours have been depicted on the construction plans.
No structures are located in protected buffers (must meet no practical alternatives criteria).
No draws are located in the buffer or filter strip in the vicinity of the proposed level spreader.
Construction details for the level spreader have been provided.
The operation and maintenance agreement signed and notarized by the responsible party is provided.
No practical alternatives explanation + Variance request. (Level Spreaders in Series only).
Bypass method used:
Bypass conveyance method is specified and construction details and calculations are provided.
Alternative design option is specified and plan details and calculations are provided.
g~ Discharge to level spreader and subsequent filter strip is hydraulically and spatially separate from the
bypass discharge.
Construction details for the bypass and outlets are provided.

DIVISION OF WATER QUALITY -LEVEL SPREADER WORKSHEET (112007)
I. PROJECT INFORMATION (please complete the following information):
Project Name : Cobblestone Subdivision
Contact Person: Brian Burkhart, P.E. Phone Number: [phone]
Level Spreader ID: 4
Level Spreader Length 13 ft. (perpendicular to flow)
Drainage Area 0.26 ac. (on-site and off-site drainage to the level spreader)
Impervious Area 0.07 ac. (on-site and off-site drainage to the level spreader)
Forebay Area 6.1 sq. ft. (0.2% of the contributing impervious surface area)
Maximum Filter StriplBuffer Slope 7.0 % (6% for forested/leaf littler cover, 8% for grass/thick cover)

Max. Discharge from 1"/Hr Storm 0.10 cfs
Max. Discharge to Level Spreader 0.24 cfs (Discharge rate from extended detention wetland or pond)
Filter Strip/ Zone 1 Buffer Vegetation Forested (Grass/Thick ground cover or Forested)
Filter Strip/ Zone 1 Buffer Width 30 ft.
Filter Strip/ Zone 2 Buffer Vegetation Grass
Filter Strip/ Zone 2 Buffer Width 20 ft.
Bypass Method Used Q,o
Please include a worksheet for this.
II. REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is
attached. If a requirement has not been met, please explain why. At a minimum, a complete stormwater management plan
submittal includes a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet
structure details, a detailed drainage plan and a fully executed operation and maintenance agreement. An incomplete
submittal package will result in a request for additional information and will substantially delay final review and approval of
the project.
A licants Initials
W ~
{~

Project Site was visited prior to designing level spreader system.
Date of the Site visit. Please attach time-dated digital photos of existing buffer conditions.
Level spreader length is at least: 13 ft. per cfs for thick ground cover /grass; OR 65 ft per cfs for 50-
foot canopied forest with leaf litter; 50 ft per cfs for 100-foot forested buffer; 40 ft. per cfs for 150-foot
forested buffer; OR a weighted average of the two vegetation types within the buffer/filter strip).
All ground cover types and their widths have been labeled on the construction plans.
All contours have been depicted on the construction plans.
No structures are located in protected buffers (must meet no practical alternatives criteria).
No draws are located in the buffer or filter strip in the vicinity of the proposed level spreader.
Construction details for the level spreader have been provided.
The operation and maintenance agreement signed and notarized by the responsible party is provided.
No practical alternatives explanation + Variance request. (Level Spreaders in Series only).
Bypass method used:
BPS
Bypass conveyance method is specified and construction details and calculations are provided.
Alternative design option is specified and plan details and calculations are provided.
Discharge to level spreader and subsequent filter strip is hydraulically and spatially separate from the
bypass discharge.
Construction details for the bypass and outlets are provided.

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Cobblestone Subdivision
Level Spreaders
Level Spreader Drainage Area Impervious Area Runoff Coefficient' 1" / hr 7.2" / hr Peak Flow Level Spreader Length Level S reader Length Level Spreader Length
acre acre Peak Flow Peak Flow to Device Thick grass - 13' / 1 cfs Forested - 65' / 1 cfs Combination - 44' / 1 cfs
Design Storm 10-year storm cfs
1 2.19 0.16 0.25 0.56 4.02 0.83 10.74 53.68 36.34
2 0.34 0.06 0.33 0.11 0.81 _ 0.24 3.10 15.52 10.50
3 5.76 0.53 0.24 1.40 10.11 2.58 33.60 167.99 113.72
4 0.26 0.07 0.40 0.10 ~ 0.75 0.24 3.10 15.52 10.50
___ i

Forebay

Level Spreader Impervious Area Forebay Area' Forebay Area Forebay Length Forebay Width Provided Area
acre acre ft2 ft ft ft2
1 0.16 0.00032 13.94 5.5 2.8 15.1
2 0.06 0.00012 5.23 3.5 1.5 5.3
3 0.53 0.00106 46.17 10.0 5.0 50.0
4 0.07 0.00014 6.10 3.5 1.8 6.1

1 -Runoff Coefficient (RC)

Area
Description
RC value
Area x RC
Average RC _
LS1 2.03 Lawn 0.20 0.406
0.16 Road /Roof 0.95 0.152
2.19 0.558 0.25

LS2 0.28 Lawn 0.20 0.056
0.06 Road /Roof 0.95 0.057
0.34 0.113 0.33

LS3 2.33 Lawn 0.20 0.466
0.53 Road /Roof 0.95 0.504 __
2.90 Wooded 0.15 ___
0.435 _
5.76 1.405 0.24

LS4 0.19 Lawn 0.20 0.038
0.07 Road /Roof 0.95 0.067
0.26 0.105 0.40

DA 5 -Proposed 4.30 Cultivated 0.25 1.075 _ _
1.20 Roadway _
0.95 _
____
1.140 ___ _ __ _
0.17 Roofs 0.95 0.162
12.61 Lawn 0.20 2.522
2.50 Wooded 0.15 0.375 i
20.78 5.274 0.25 10-year Peak (cfs) 37.97
DA 5 -Existing 14.43
0.25 Cultivated
Roadway 0.25
0.95 3.608 ___
fi
0.238 ___ ~
t _
0.00 ~ Roofs
0.00 Lawn 0.95
0.20 _
0.000 -
0.000 ~
~
__
6.10
Wooded 0.15 0.915 _______
_
20.78 4.760 0.23 10-year Peak (cfs) 34.27 10.79%
i Flow Difference
9/25/2007

Cobblestone Subdivision
Level Spreaders
Hydraulics
4' x 4' Concrete Box Weir Equation => Q = CW`L"H'
CW = 3 Broad-crested /Free overfall
L = Weir Length (feet)
_ _ __ _ __ __
H = - Head (feet)
i
Orifice Equation => O = ~ Cp*A*SQRT(2"g"Ho)
Co = 0.65 Groove End RCP
A = Cross-sectional Area (square feet)
-----

_ _.. __ --

~_
--- --
9 =

32.2 ft/sec2

_
Ho = Head (feet) (Use Hd2 for orifice)
---
--
Level
preader
S 1"Storm Peak Orifice Area Head Flow -Orifice Weir Height 10-yr Storm Weir Length (L) otal head (H Flow -Orifice Flow -Weir Total Flow
_
_ cfs inch sq. feet feet cfs feet i cfs feet Feet cfs cfs cfs

1 0.56 6 0.196 0.60 0.56 0.85 4.02 4 1.30 0.83 3.62 4.45
2 ____
0.11 4 0.087 0.25 0.16 _
0.42 0.81 4 0.55 0.24 0.58 0.82
- _ _
3
1.40
10
0.545
0.50 - ---
1.42
0.92
10.11
4
___ 1.65
2.58
7.54
10.12
4 0.10 4 0.087 0.25 0.16 0.42 0.75 4 0.55 0.24 0.58 0.82
9/25/2007

Section XI
Level Spreader 1
Cobblestone Subdivision
Level Spreader 1
Level Spreader 2 Level Spreader 2

Section XI
Level Spreader 3
Cobblestone Subdivision
Level Spreader 3
Level Spreader 4

PROJECT NAME: Cobblestone Subdivision IPRDJECT NO.: LS 1 -Bypass Channel - Unvegetated
FROM STATION/REACH: TO STATION/REACH: DRAINAGE AREA: 2.19 DESIGN FRERUENCY: 10-year
HYDRAULIC RESULTS
Discharge
cfs Peak Flow
Period hrs Velocity (fpsJ Area (sq.flJ Hydraulic
Radius ft Normal
De th ft
4.D 24.0 4.07 0.98 0.24 0.33
LINER RESULTS
SC250
S = 0.0800
1 ~ ~' '/ I 1
Bottom -J
3.0 Width = 2.00 It 3.0
Not to Scale

Reach Malting Type
Stability Analysis Vegetation Characteristics
Permissible
Calculated
Safety Factor
Remarks
Staple Pattern Phase Class Type Density Shear Stress
(psfJ Shear Stress
(psfJ
Straight SC250 Unvegetated 1 2.50 1.64 1.52 STABLE
Staple E
Back to InputScreen ~.

ROM STATION/REACH:
HYDRAULIC RESULTS
Discharge
cfs Peak Flow
Period hrs Velocity (fps) Area (sq.ftJ Hydraulic
Radius ft Normal
De th fl
4.0 24.0 1.34 2.99 D.46 0.72
LINER RESULTS
SC25D
S = 0.0800
Bottom -J
3.0 Width = 2.00 it 3.0
Not to Scale

Reach Matting Type
Stability Analysis Vegetation Characteristics
Permissible
Calculated
Safety Factor
Remarks
Staple Pattern Phase Class Type Density Shear Stress
(psfJ Shear Slress
(psfJ
Straight SC250 Vegetation 3 B Mix 75-95% 8.00 3.59 2.23 STABLE
Staple E Soil Sandy Loam 0.8D0 0.033 24.14 STABLE

HYDRAULIC RESULTS
ONlREACH:
Discharge
cfs Peak Flow
Period hrs Velocity (fpsJ Area (sq.f1J Hydraulic
Radius fl Normal
De th ft
0.6 24.0 2.31 0.26 0.10 0.11
LINER RESULTS
SC250
S = 0.0880 1
1 ~ Bottam J 1
3.0 Width = 2.00 ft 3.0
Not to Scale

Reach Matting Type
Stability Analysis Vegetation Characteristics
Permissible
Calculated
Safety Factor
Remarks
Staple Pattern Phase Class Type Density Shear Stress
(psfj Shear Slress
(psfJ
Straight SC250 Unvegetated 1 2.50 0.61 4.09 STABLE
Staple E
Back to Input Screen

HYDRAULIC RESULTS
Discharge
cfs Peak Flow
Period hrs Velocity (fpsJ Area (sq.ft) Hydraulic
Radius ft Normal
De lh ft
0.6 24.0 0.56 1.08 0.25 0.35
LINER RESULTS
1~ ~' '/ ~1
Bottom
3.0 Width = 2.00 ft 3.0
Not to Scale

Reach Malting Type
Stability Analysis Vegetation Characteristics
Permissible
Calculated
Safety Factor
Remarks
Staple Pattern Phase Class Type Density Shear Stress
(psfJ Shear Stress
(psf)
Straight SC250 Vegetation 3 B Mi>< 75-95% 8.00 1.94 4.13 STABLE
Staple E Soil Sandy Loam 0.800 0.008 104.58 STABLE

'ROM STATION/REACH:
HYDRAULIC RESULTS
Discharge
cfs Peak Flow
Period hrs Vebcity (fpsj Area (sq.ft) Hydraulic
Radius fl Normal
De th ft
8.0 24.D 4.89 1.64 0.33 O.d6
LINER RESULTS
acres
SC250
S = 0.0770
1 ~.' '/ 1
Bottom
3.0 Width=2.00 ft 3.0
Not to Scale

Reach Matting Type
Stability Analysis Vegetation Characteristics
Permissible
Calculated
Safety Factor
Remarks
Staple Pattern Phase Class Type Density Shear Stress
(psfj Shear Stress
(psfj
Straight SC250 Unvegelated 1 2.50 2.29 1.09 STABLE
Staple E
Back tolnputScreen~

HYDRAULIC RESULTS
Discharge
cfs Peak Flow
Period hrs Velocity (fpsj Area (sq.ItJ Hydraulic
Radius ft Normal
De th ft
8.0 24.0 1.98 4.04 0.54 0.87
LINER RESULTS
acres (DESIGN
SC250 (n=0.138)
S = 0.077D
Bottom
3.0 Width = 2.00 ft 3.0
Not to Scale

Reach Matting Type
Stability Analysis Vegetation Characteristics
Permissible
Calculated
Safety Factor
Remarks
Staple Pattern Phase Class Type Density Shear Stress
(psfJ Shear Stress
(psfJ
Straight SC250 Vegetation 3 B Mix 75-95% 8.00 4.20 1.90 STABLE
Staple E Soil Sandy Loam 0.800 0.060 13.44 STABLE
f ................._...........~...._................
Back to Input Screen

ROM STATION/REACH:
HYDRAULIC RESULTS
Discharge
cfs Peak flow
Period hrs Velocity (fps) Area (sq.fl) Hydraulic
Radius ft Normal
De th f1
0.6 24.0 1.92 D.31 0.11 0.13
LINER RESULTS
to acres tut~iurv rntutuen~r:
SC250 (n=0.040)
S = 0.0500
1 ~ Bottom J 1
3.D Width = 2.OO It 3.0
Not to Scale

Reach Matting Type
Stability Analysis Vegetation Characteristics
Permissible
Calculated
Safety Factor
Remarks
Staple Pattern Phase Class Type Density Shear Stress
(psf) Shear Stress
(psf)
Straight SC250 Unvegetated 1 2.50 0.41 6.12 STABLE
Staple E
Back tolnputScreen

HYDRAULIC RESULTS
Discharge
cfs Peak Flow
Period hrs Velocity (fpsJ Area (sq.ft) Hydraulic
Radius ft Normal
De th ft
0.6 24.0 0.46 1.32 0.29 0.41
LINER RESULTS
AREA:.26 acres (DESIGN FRE4UENLY:
SC250 (n=0.318)
5 = 0.0500
1 ~ Bottom ~ 1
3.0 Width = 2.00 It 3.0
Not to Scale

Reach Matting Type
Stability Analysis Vegetation Characteristics
Permissible
Calculated
Safety Factor
Remarks
Staple Pattern Phase Class Type Density Shear Stress
(psf) Shear Stress
(psfj
Straight SC250 Vegetation 3 B Mix 75-95% 8.00 1.28 6.27 STABLE
Staple E Soil Sandy Loam 0.600 0.005 158.72 STABLE

~~ ~-
~_
MATERIAL SPECIFICATION ~• ~-~fi~
`fi `~=
AMERRTCAIU S C 2 SO i,,{, . t
GREEN'
The composite turf reinforcement mat (C-TRM) shall be amachine-produced mat of 70% straw/30% coconut fiber matrix
incorporated into a permanent three-dimensional turf reinforcement matting.
The matrix shall be evenly distributed across the entire width of the matting and stitch bonded between a heavy duty UV
stabilized bottom net with 0.50 x 0.50 inch (1?7 x 1.27 em) openings, an ultra heavy duty UV stabilized. dramatically
corrugated (crimped) intermediate netting with 0.50 x 0.50 inch (1.27 x 1.27 cm) openings,•and covered by a heavy duty
UV stabilized top net with 0.50 x 0.50 inch (1.27 x 1.27 cm) openings. The middle corru;~ated netting shall form
prominent closely spaced ridges across the entire width of the mat. The three nettin~~s shall be stitched rogethrr on I .i0
inch (3.81 cm) centers with UV stabilized polypropylene thread to form a permanent three-dimensional turf reinforcement
matting.
The SC250 shall meet requirements established by the Erosion Control Technology Council (ECTC) Specification and the
U.S. Department of Transportation, Federal Highway Adminisu~ation's (FHWA) Stur~clurd SpeciJicu[iur~s /~~~~,-
Construction of Roads and Bridges on Federal Highway Projects, FP-03 2003 Section 713.]8 as a Type .SA, B, and C
Pern~zanent TuifReinforce~nent Mat.
Installation staple patterns shall be clearly marked on the turf reinforcement mattings with environmentally safe paint. All
mats shall be manufactured with a colored thread stitched along both outer edges (approximately 2-5 inches [5-12.5 cm]
from the edge) as an overlap guide for adjacent mats.
The composite turf reinforcement mat shall be the North American Green SC250, or equivalent. The SC2~0 permanent
composite turf reinforcement mat shall have the following physical properties:
Material Content
Matrix 70% Straw Fiber
(0.35 Ib/yd') (0.19 kg/m'-)
30% Coconut Fiber
(0.15 lb/yd') (0.08 kg/m')
Netting Top and Bottom -Heavy Duty UV Stabilized Polypropylene
(5.0 Ibs/1,000 ft' [2.44 kg/100 m'] approximate weight)
Mid -Corrugated Ultra Heavy Duty UV Stabilized Polypropylene
(24 lb/1,000 ft' [11.7 kg/100 m'] approximate weight)
Thread UV Stabilized Polypropylene
SC250 is Available with the Following Physical Specifications Per Roll English Units (Metric Units)
Width 6.50 ft (2.00 m)
Length 55.50 ft (16.90 m)
Weightf l0% 34.00 Ibs (15.42 I:g)
Area 40.00 yd' (33.40 nr)
Stitch Spacing for Al] Rolls = 1.50 inches (3.81 cm)
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LEVEL SPREADER SYSTEM OPERATION AND MAINTENANCE AGREEMENT (1/2007)
A level spreader system includes: a forebay, diverter box, level spreader, riparian buffer/vegetated filter strip,
and flow bypass channel.
Name of Project: Cobblestone Subdivision
Address: Tarboro Road Franklin County, North Carolina
Maintenance activities shall be performed as follows:
MAINTENANCE ACTIVITY FREQUENCY
Post-construction monitoring-inspect for vegetation, Check after every heavy rainfall for first 6 months
settlin ,erosion, or concentrated flow. followin construction.
Inspect Diverter Box and clean and/or make repairs. Once a month and after heavy rainfalls/storms.
Look for:
• Clogged inlet or outlet pipes.
• Trash/debris in the box.
Inspect Forebay + Level Spreader. Clean and/or Once a month and after heavy rainfalls/storms.
make repairs. Look for:
• Sediment in forebay and along level spreader
lip;
• Trash and/or leaf buildup.
• Scour, undercutting of level spreader.
• Settlement of level spreader structure (no
longer level; you see silt downhill below level
spreader).
• Fallen trees on level spreader.
• #57 stone washin downhill.
Inspect the Riparian Buffer and the Bypass Swale Once a month and after heavy rainfalls/storms.
and make repairs as needed. Look for:
• Damaged turf reinforcement or riprap rolling
downhill.
• Erosion within the buffer or swale.
• Concentrated flows downhill of level
s reader-look for ullies or sediment flows.
Mow grass to a 6" height. As needed during growing season.
Remove any weeds/shrubs growing on level Once a year.
s reader or in swale.
1 NOTE: Contact NC Division of Water Quality, 401/Wetlands Unit at 919-733-1786 BEFORE any work
in Protected Riparian Buffers.
Page 1 of 2

LEVEL LOCATION ON SITE (DESCRIBE) HOW WILL IT BE ACCESSED?
SPREADER NO.
1 Northwest comer of Cobblestone Way and Cobblestone Way
Unnamed Tributa
2 Northeast corner of Cobblestone Way and Cobblestone Way
Unnamed Tributa
3 Southeast comer of Cobblestone Way and Cobblestone Way
Unnamed Tributa
4 Southwest comer of Cobblestone Way and Cobblestone Way
Unnamed Tributa
I acknowledge and agree by my signature below that I am responsible for the performance of the
maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any
changes to the system or responsible party.
Print name: ~`~~ ~/ rr~
~~~~
Title: ~'7~ ~~~ , G ~cirr S ~~,~~~~~-:.~ 4L
'3~%~ ~~~ ~i ,.~'-~y~ i~z ~~~1' ;~~~ ~~%,-cal
Address:
Phone.

Signature: ~
Date: `~ ~~' ~~
Note: The legally responsible party should not be a homeowners association unless more than 50% of the
lots have been sold and a resident of the subdivision has been named the president.
I, ~ I I ~~~ ~,. ~~,,,r~ , , a Notary Public for the State of ><~ G ,
v
County of ~,~ S~ , do hereby certify that C ~ I t~ o--
personally appeared before me this ~b~- day of v r , ~ 0~1 ,and acknowledge the
due execution of the forgoing wet [wetland] detention basin maintenance requirements. Witness my hand
and official seal,
k7 ~g5~-, ~L ~~p SE ° /pat R y {+!
l ~~'~l~~L~'~~T H C~iV ~tl~~ ~®Y 9~"a~L~~C1~1~i~.a13~~.y /~~i; ~" 1
SEAL
My commission expires ~ C~ ~S ~~
Page 2 of 2

Tar-Pamlico Stormwater Rule 15A NCAC 28 .0258
Piedmont of the Tar-Pamlico River Basin:
Last Modified 9/20/2007
Includes Uxlord, Henderson, Kocky Mount and Tarboro as well as rranklm, Nash and Edgecome Counties
Total Nitrogen and Total Phosphorus Loading Calculation Worksheet (Automated)
Project Name:
Date:
By: Checked By:
Directions (same for pre-development and post-development tables):
> Enter the acres of each type of land cover in the green boxes. The spreadsheet will calculate all of the values in light blue.
> Compare total areas of development in pre- and post- tables for consistency (bottom of column (2)), and also for consistency with
the site plans. If all of these values are not the same, there is an error that must be corrected.
> Unless drainage onto the development from offsite is diverted around or through the site, offsite catchment area draining in must
be included in the acreage values and treated.
os~ ~ev-too ~ - D('c; e ~Fa ~
(1) (2) c3) ;(4) ; 5~ ~~) (?)
;Type dfI/~nd:Cover Area S lvI :p'vrmula AverageEi~±C Clumn ::Average I~MC; Coi;u-nn
ages ! 0.4:6 + 8.3I of `CN m /i< 2 .;, 3 * 4:' of TP : m /I; : 2 *. 3 k G
Transporfatron impervious ':1.20 1.01 2.60 3.14 0.19 0.23

~
~~ Aoofimperv#ous ~ ;0,17 " ~°~ 1.01 1.95 0.33 0.11 0.02

Managed pervious
`
(lawn landscaped) 12.6
1 ., 1.01 1.42 18.05 0.28 3.56
Managed pervious
4.30
1.01
4.23
18
33
23
1
5
33
{cr;opland};, . . .
Managed pervious

(pasture): i 1.01 2.04 0.00 0.62 0.00

Wooded pervious ` '2.50 1.01 0.94 2.37 0.14 0.35

1~ ractton Impervious (I}
0.07 TN Loadin
42.23 TP;[~aadit,g
9
49
.

Tptal Area;if Develgpment =
20.78 TN EXp Coeff
2.03
~ Tp »xp. Coeff
46
0
(Ib/ac/yr} = (Ib/ac/yr) ;: .
Post-development: ~ j.~ ~b ~~Y~

.Type of Land Cover .area S M :Formula Average EMC:; Cot.umn AverageEMC Column
hues 0.46:+ 8.3I of TN' m fL : * 3 ~ 4 of TR: in fL 2 h ~ ! .6

Tr.nsportatian impervious 2.60 0.19

Roof iinpcrviaus 1.95 0.11

Managed pervious 1.42 0.28

Wooded pervious 0.95 0.14

Fraction Impervious (I)- Tl~( Loadin T'P Loading

Totbl Area of ©cvelopment = i TN Exp. Coe€f. TP Expi Coeff
(Ib/ac/yr) _ (Ib/ac/yr)
Note: The nutrient loading goals are 4.0 Ib/ac/yr for "TN and 0.4 lb/ac/yr for TP. If the post-development nutrient
loading is below these levels, then no BMP is necessary. Otherwise, the next worksheet calculates
post-development TN and TP loadings after BMPs are installed.