20072022 Ver 2_401 Application_20080208

HORVATH
ASSOCIATES
CIVIL ENGINEERS PLANNERS LANDSCAPE ARCHITECTS
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LUIS
FEe ~ 1
2008
DEAR - WATE
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North Carolina
16 Consultant Plaoe, Suite 201
Durham, NC 27707
p 919.490.4990 / f 919.490.8953
Tennessee
537 Markefi Streat Suitt LL20
Chattanooga, TN 37402
p 423,2bb.4990 / f 423.26b.5700

Horvath Associates, PA
Civil Engineers • Planners • Landscape Architects
16 Consultant Place Ste. 201 Durham, NC 27707
PO. Box 51806 Durham, NC 27717-1806
[phone] 'Fax [phone]
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WE ARE SENDING YOU attached via 1 i'q!'~ p ~ ~L~ V ~~` ( the following items:
^ Shop drawings ~, Plans ^ Specifications ^
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DATE ~ ^,. 1' ,_ ~ C ~ ~ JOB NO. /1 ~ I
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COPIES DATE NO. DESCRIPTION
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THESE ARE TRANSMITTED as checked below:
Cs~ For approval ^ For your use ^ As requested
^ For review and comment
FEES ~ ~ 2008
DENR - WATER QUNITY
usn AWDS AND STORNN'IATER l3R1~1'l~

REMARKS
COPY TO
SIGNED
If enclosures are not as noted, kind)

•
Table of Contents
1. PCN Form
2. Narrative
3. Agent Authorization
4. Impact Summaries
5. Impact Maps
6. Required Maps and Project Information
7. Previous DWQ Correspondence

•
Office Use Only: Form Version March OS
USACE Action ID No. DWQ No.
(If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A".)
I. Processing
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: NWP 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 U ~ ~ ~ ~~ ~ D
1. Owner/Applicant Information FEB 1 1 2008
Name: Jerry Radman
Mailing Address: East Durham Land Com an LLC oF~t-wAr~RCwAUTr
201 Shannon Oaks Circle
Raleigh. NC 27511
Telephone Number: [phone] Fax Number:~919) 465-3383
E-mail Address:
2. Agent/Consultant Information (A signed and dated copy of the Agerit Authorization letter
must be attached if the Agent has signatory authority for the owner/applicant.)
Name: John E. Schrum, PE
Company Affiliation: Horvath Associates, P.A.
Mailing Address: 16 Consultant Place, Suite 201
Durham NC 27707
Telephone Number:~919) 490-4990 Fax Number:~919) 490-8953
. E-mail Address: john.schrum(c~horvathassociates.com
Updated 11/1/2005
Page 5 of 13

• 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 I 1 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. It' 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: Sierra
2. T.I.P. Project Number or State Project Number (NCDOT Only): n/a
3. Property Identification Number (Tax PiN):~see attached vicinit~p for PINs)
4. Location
• County: Durham Nearest Town: Durham
Subdivision name (include phase/lot number): Sierra
Directions to site (include road numbers/names, landmarks, etc.): I-40 to I-540 to Exit 4B,
Glenwood Ave / US-70W. After 3.4 miles, turn right at Leesville Road, continue to 1.2
miles to intersection with Doc Nichols Road. Site may be accessed via either road, main
entrance is <1 mile ahead on Leesville Road, left side. See attached vicinity map.
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): 35.947903 °N 78.789466 °W
6. Property size (acres): 422.60 acres
7. Name of nearest receiving body of water: Lick Creek (27-11-(1.5),l (WS-IV; NSW, CA~_
8. River Basin: Neuse River Basin. NEU01
(Note -this must be one of North Carolina's seventeen designated major river basins. The
River Basin map is available at ham://h2o.enr.state.nc.us/admin/maps/.)
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 currently forested, undeveloped land. The
surroundin arg ea is primarily rural and suburban residential development.
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. 10. Describe the overall project in detail, including the type of equipment to be used: The
overall ~roiect will consist of 369 single-family homes and 130 multi-family townhomes.
Equipment consistent with grading earthmovingi and paving~will be used.
11. Explain the purpose of the proposed work: The purpose of the project is to provide housing
for homebuyers increase the tax base of the City of Durham and populate this r~ owing
region of eastern Durham.
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 USAGE 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. No prior permits have been requested. Buffer determinations NBR 06-
135 and 06-136 were obtained from NCDWQ. Copies are attached.
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.
Future permit requests are not anticipated, but may be submitted as part of future phases that
have not yet been designed.
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.
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Page 7 of 13

1. Provide a written description of the proposed impacts: The proposed impacts include
two road crossings with culverts, nine sanitary sewer crossings, and two fill slope locations.
Additionally, `allowable' impacts are proposed in association with the bypass channels which
convey flows from larger storm events from the proposed BMP's associated with the site.
The impacts will be include stream impacts and Zones 1 and 2 buffer impacts. Miti ag tion
will be required for some of the impacts.
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)
8A Temporary Sanitary
Sewer Forested yes 0 0.060
9A Temporary Sanitary
Sewer Forested es
y 0 0.214

Total Wetland Impact (acres) 0.274
• 3. List the total acreage (estimated) of all existing wetlands on the property: 20.47 acres
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, multiply length X width, then divide by 43,560.
Stream Impact
Number
(indicate on ma)
Stream Name
Type of Impact Perennial or
Intermittent? Average
Stream Width
Before Im act Impact
Length
(linear feet) Area of
Impact
acres)
lA Earthquake Creek Road Crossing Intermittent 2.5 ft 137 0.008
4C Earthquake Creek Road Crossing Perennial 4.1 ft 148 0.014
1, 2A, 3, 4, 4B, 6 Earthquake Creek Utility Crossing Intermittent 2.2 ft 211 0.010
4D Earthquake Creek Temporary Erosion Perennial 3.2 ft 66* 0.064

Total Stream Impact (by length and acreage) 562* 0.096*
*Note: Temporary erosion control stream impacts included in totals on this page, but not in cumulative impacts.

Updated 11/1/2005
Page 8 of 13

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, dred~in~, flooding, drainage, bulkheads, etc.
Open Water hnpact
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) 0.0
6. List the cumulative impact to all Waters of the U.S. resulting from the project:
Stream Impact (acres): 0.032
Wetland Impact (acres): 0.0
Open Water Impact (acres): 0.0
Total Impact to Waters of the U.S. (acres) 0.0
Total Stream Impact (linear feet): 496
7. 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.): dam/embankment and excavation
Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond,
local stormwater requirement, etc.): 1-peak flow detention requirement
Current land use in the vicinity of the pond: undeveloped
Size of watershed draining to pond: Expected pond surface area:
*Note: Basins will be designed with phases and are not included in the scope of this design.
•
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Page9of13

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. Extensive avoidance and
minimization techniques are practiced throughout the site. All wetland impacts will be avoided.
Phased development clusters, including single- and multi-family homes, are located between
Neuse-buffered streams. At the road crossings, headwalls will limit the length of the culverts,
and the culverts are designed to match the existing stream profiles in order to reduce the length
of the required riprap dissipators. Jack and bore techniques will be used to reduce the impacts of
utility line crossings. All unnecessary crossings were avoided in designing the site.
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.
USAGE - 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 USAGE 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 (see DWQ website for most current
version.).
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
•
Updated 11/1/2005
Page 10 of 13

description of the current site conditions and proposed method of construction. Please attach
a separate sheet if more space is needed.
Mitigation will be provided through payment-in-lieu program with NCEEP (see below
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;//www.nceep.net/pages/inlieureplace.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): 0 LF
Amount of buffer mitigation requested (square feet): 7,205 SF
Amount of Riparian wetland mitigation requested (acres): 0 acres
Amount ofNon-riparian wetland mitigation requested (acres): 0 acres
Amount of Coastal wetland mitigation requested (acres): 0 acres
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
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.
•
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Page 11 of 13

1. Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233
i (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 multipliers.
Zone* Impact
(s ware feet) Multiplier Required
Miti ation
1 7,205 3 (2 for Catawba) 21,615
2 0 1.5 0
Total 7,205 21,615
* Zone 1 extends out 30 feet perpendicular from the top of the near bank of channel; Zone 2 extends an
additiona120 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. For the mitigation required, payment into
the Riparian Buffer Restoration Fund is~roposed (see attached). Mitigation includes impacts
from utility lines parallel to the stream that encroach on Zone 1 Meuse buffers.
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. There is no existing impervious area. Proposed
maximum built-out impervious is 24% of 422.60 acres which is 101.42 acres. All stormwater
discharges will be diffuse flow and peak most-development flows will match pre-development
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.
Sewerage generated by the proposed project will be piped to the City of Durham sanitary sewer
system and treated
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
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Updated 11 /1/2005
Page 12 of 13

XIV. Cumulative Impacts (required by DWQ)
Will this project (based on past and reasonably anticipated future lmpacts) result In addttlonal
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
lip;//It2t~.enr.tit~tc.ne.us/ncwetlnnd5. If no, please provide a short narrative description: The
~roiect will include future~hases that have not been designed vet, but the future phases will use
the current proposed road crossings for access thereby avoiding future impacts.
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).
n/a _ ,~__
Z/5/ t,~oB
pplicant/Agent's ~gnature / ~ Date
(Agen signature is valid only if an authorization letter from the applicant is provided.)
•
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Page 13 of 13

•
SIERRA
PRE-CONSTRUCTION NOTIFICATION
SECTION 401 /404 PERMIT AND
NATIONWIDE 29 PERMIT APPLICATION NARRATIVE
SIERRA
Doc Nichols Road and Leesville Road
Durham, North Carolina
Horvath Associates Project No.: 0713
January 8, 2008
Revised February 5, 2008
•
Prepared for: MacGregor Development Company
201 Shannon Oaks Circle, Suite 201
Cary, North Carolina 2751 1
[phone]
Prepared by: Horvath Associates, P.A.
Engineers -Planners -Landscape Architects
P.O. Box 51806
Durham, North Carolina 27717
• [phone]

SIERRA
PRE-CONSTRUCTION NOTIFICATION
SECTION 401 /404 PERMIT AND
NATIONWIDE 29 PERMIT APPLICATION NARRATIVE
General Description
Sierra is a proposed 422.60-acre subdivision located between the northeast
intersection of Doc Nichols Road and Leesville Road and the southeast corner of
Doc Nichols Road and Olive Branch Road in Durham, North Carolina. It will
consist of single-family homes and town homes and is zoned PDR 3.0. The site is
located along Earthquake Creek and is located in the Neuse River Basin.
Earthquake Creek is classified by US Army Corps as a perennial stream, and the
majority of its tributaries on the site are unimportant intermittent streams.
This project is a phased design. Construction-level design documents are being
reviewed by the City of Durham for only the infrastructure construction, including
Athena, Atlas, and Bowhall roads. Phased pods of single- and multi-family units
will be designed at a later date. However, this permit application will address
the impacts created in the anticipated built out condition.
Pre-Construction Notification Narrative
(This narrative follows the structure of the attached North Carolina PCN
Addendum.)
Section 1: Processing
The permit under consideration is a Nationwide 29 Permit, administered by the
US Army Corps and a 401 /404 Water Quality Certification issued by NC DWQ.
Mitigation is required only for Zone 1 buffer impacts where utility lines are parallel
to a stream; payment to the North Carolina Ecosystem Enhancement Program
(NC EEP) is proposed. Acceptance into the In-Lieu Fee program has been
obtained, and the acceptance letter is attached.. Other buffer impacts include
those associated with areas where the proposed connector road crosses the
intermittent and perennial streams and the bypass channels associated with the
nutrient reduction facilities. The nutrient reduction facilities are primarily pocket
wetlands and they are chosen instead of level spreaders because of steep
slopes on the site.
•

Section 2: Applicant Information
The applicant, East Durham Land Company, LLC, has authorized Horvath
Associates as their agent with an agent authorization form. The signed agent
authorization is included in this application package. The contact information
for both parties is included on the PCN.
Section 3: Project Information
The following maps are attached: USGS, NRCS Soil Survey, vicinity map,
construction drawings (24x36 full size plans), drainage map (24x36 full size plans),
and impact maps. (8.5x1 1 sheets). All stream impacts and buffer impacts appear
on the impact maps.
There are two culvert crossings on the site. Culvert details are shown on the
impact maps and the culvert design profiles (attached). Velocity dissipators are
shown on the impact maps, and calculations are attached. There are no stream
relocations on the site.
The portion of the DWQ Stream Classification List pertinent to this project is
attached. Lick Creek is the nearest receiving stream; some of the site drains to
Martin Branch, which drains to Lick Creek, too. Martin Branch is not included in
the DWQ Stream Classification List.
It is important fo note that this project is presented in two phases. The initial
phase is construction of the primary road through the project. Each discharge
point is designed and will be constructed as a permanent structure even in
cases where the facility will eventually be abandoned and replaced with a
facility in a future sub-phase. Each proposed stormwater facility will function as
a constructed wetland and will provide 1-year peak flow attenuation in order to
satisfy City of Durham Detention requirements.
The second phase presented shows the future site plan build-out,and shows the
pocket wetland associated with each phase. These wetlands are designed to
be the final BMP in place.
Section 4: Prior Project History
Copies of two stream determinations are attached.
Section 5: Future Project Plans
Even though the fully developed, built-out condition is not shown on the impact
maps (it will be designed in the future), all anticipated impacts are shown. The
owner reserves the right to apply for future impacts based on unanticipated
conditions.

Section 6: Proposed Impacts to Waters of the US
The proposed impacts include two culvert crossings (one over unimportant
intermittent stream and the other over perennial stream), nine utility line
crossings (five over intermittent stream, three over perennial stream, and one
over both), and two fill locations (crossing will be avoided, only buffer impacts).
Some of the buffer impacts are by sanitary sewer that will travel parallel to the
stream, and some are by perpendicular crossings. All perpendicular utility
crossings across perennial stream will use jack and bore techniques to avoid
perennial stream impacts.
Additionally, temporary buffer impacts will be created by a temporary diversion
channel to facilitate the installation of the Atlas box culvert.
Summaries of the buffer and stream impacts are attached.
All onsite streams have been subject to a stream determination by NC DWQ.
Steep slopes are pervasive on the site and there are no discharges points where
the slopes are flat enough to accommodate level spreaders. For this reason, all
points of discharge will be treated for nutrient removal with pocket wetlands.
The wetland designs adhere to all aspects of the latest North Carolina Division of
Water Quality Best Management Practices Manual (BMP Manual). The resulting
maximum discharge from each wetland ranges from 0.02 cfs to no more than
0.13 cfs at each discharge point. The result is that the peak outflow resulting
from the 1-inch rainfall will produce little or no erosion.
Section 7: Avoidance and Minimization
Extensive avoidance and minimization techniques are practiced throughout the
site. Wetland impacts do not exceed those impacts necessary to install sanitary
sewer in order to connect to the regional sanitary sewer pump station.
Additionally, the individual pods and phases of the subdivision, including single-
and multi-family homes, are located between the streams with Neuse buffers. As
a result, only two stream crossings are currently planned. Lot layouts avoid all
wetlands and stream buffers on the property.
The Atlas stream crossing (perennial) is 105 degrees and the Athena stream
crossing (intermittent) is 66 degrees. While the Athena crossing is less than 75
degrees, the crossing occurs near a 90-degree bend in the stream. The situation
of the road parallel to the stream buffer allows for an avoidance of impacts,
and the crossing's location avoids impacting a nearby intermittent tributary (to
the north-northeast), while allowing for adequate space to develop pods of lots.
Headwalls are used on each crossing to minimize impacts, but due to the steep

grades around the streams, a balance is proposed to minimize the potential
safety hazard created by excessively high walls.
The use of phasing and pod design also encourages smart erosion and
sediment control. The site will be developed in small sections, which will minimize
the sediment impact at any one time. Greater attention to maintaining erosion
controls can be given to the smaller phases as they are built, too.
Section 8: Mitigation
Approval from NCEEP of the mitigation required is attached. The project will use
the payment-in-lieu program for a total of 3,201 square feet of buffer impacts:
3,201 SF in Zone 1 and 0 SF in Zone 2. The perennial stream impact is less than 150
linear feet, so no stream mitigation is required. The buffer impacts that entail
mitigation include utility lines parallel to the stream that encroach into Zone 1 of
the Neuse buffers. The total amount of mitigation required (with multipliers) is
9,603 SF. The mitigation will be handled by "Payment into the Riparian Buffer
Restoration Fund." All other buffer impacts are 'allowable' and do not require
mitigation.
Section 9: Environmental Documentation
No federal funds will be used, and no NEPA/SEPA documents are required
Section 10: Proposed Impacts on Riparian and Watershed Buffers
(see Section 8 and Section 1 1)
Given that level spreaders are not feasible for any discharge point on the site,
each discharge point will be treated with pocket/constructed wetlands to meet
alternative nutrient removal requirements. Each wetland will be designed per
the latest North Carolina Best Management Practices Manual (NC BMP) and to
the latest City of Durham standards. City of Durham Stormwater Services will
review each wetland for compliance with water quality standards and City of
Durham requirements.
Nitrogen treatment is not required, because the final site imperviousness will not
exceed 24 percent. The nitrogen loading rate is less than 3.6 pounds per acre
per year, based on the City of Durham's nitrogen loading calculation methods.
All buffers appear on the plans, including 50' North Carolina Neuse Basin buffers
and 100' City of Durham perennial stream Neuse buffers.
•

Section 11: stormwater
There is no existing impervious area on the site. The overall site is limited to 24%
impervious in the post-development, fully built-out condition. City of Durham is
responsible for implementation and review of all aspects of the stormwater
management plan, including adherence to the Neuse Buffer rules (NSW) and
water supply watershed rules (WS IV). The August 20, 2007 memorandum to this
effect is attached. All construction document approvals associated with the
stormwater management plan will be forwarded to NC DWQ upon receipt.
Two of the proposed `pods' are currently slated for multi-family town homes.
Each of these pods is to be treated for 85~o TSS removal in the post-development
condition.
Section 12: Sewage Disposal
Sewerage generated by the proposed development will be piped into the City
of Durham sanitary sewer system and treated.
Section 13: Violations
This site is not in violation of DWQ Wetland Rules or any Buffer Rules.
Section 14: Cumulative Impacts
This project, based on past and reasonably anticipated future impacts, will not
result in additional development that could affect water quality.
Section 15: Other Circumstances
None.

~~ t ~ ~' ~ AGENT AUTHORIZATION FORM
Name: Jem~ Radman
Company: East Durham Land Compam~. LLC
`' ~ ""? ~' ~°` Address: 201 Shannon Qaks Circle
. .:.,.
~:<~ :~ ~~ _ ~~ Ralei~=lt. NC
Phone: (914} -f65-3312
Project: Sierra
Location: Durham, North Carolina
HA Job #: 0738
To Rfiom It May Concern:
L the applicant. hereby designate and authorize Horvath Associates. P.A. to act on my behalf as
my agent in the processing of permit applications and to furnish upon request supplemental
information in support of applications, from this day forward for the above named project.
t certify that I am a responsible officer, partner, or owner of the company. This signature
certifies that the applicant has title to the propert}' or has been authorized by the o~rner to apply
for certification. Said agent in signing the application shall also certify that all information
contained therein or in support thereof is true and correct to the best ofhis/her I:no~vledge.
This notification supercedes any previous correspondence concerning the agent for this project.
~sr ~ ~, L~ ~ ~ C,LC
Print Applicant's Name
V,-~ ~~
~ A p fsSignatur~tt~Gl~~llt~
~z fl~ a
Date
tto~ cQOfrw
16 Corrs.t Ptiaoe. Sure 2a1
QrFaorst NC 27747
p919-494990 t9i9-d9CAS953
•
Tertirtessee
537 Mvket Street. Su~'.e tl.2\7~
Chattonoog~ iP.t 3702
p 423.266-4940 f <23.266-5700

•
0713 Section 401 Impact Summary.xls
Overall Impact Summary
Wetland Impacts:
Total Wetland Impact:
11,956 s . ft
0.274 acres
Impact # Area Area
8A 2,628 0.060
9A 9,328 0.214
•
•
Stream Impacts:
Intermittent Perennial Total
NWP 29 Stream Impact: 348 148 496 linear feet
Horvath Associates
2/11/2008

Impact
Stream
Type of Perennial
Impact
Impact
# Name Impact or Comment Length (If) Area (sf)
Intermittent
1 A Earthquake Culvert Intermittent w/ 137 346
Creek Dissi ator
4C Earthquake Culvert Perennial vv/ 148 594
Creek Dissi ator

1 Earthquake Utility
Intermittent S/S open
34
68
Creek Crossin cut

2A Earthquake Utility
Intermittent S/S open
41
82
Creek Crossin cut

3 Earthquake Utility
Intermittent S/S open
30
77
Creek Crossin cut

3A Earthquake Utility
Perennial Jack and
0
0
Creek Crossin bore

4 Earthquake Utility
Intermittent S/S open
32
63
Creek Crossin cut

4 Earthquake Utility
Perennial Jack and
0
0
Creek Crossin bore

46 Earthquake Utility
Intermittent S/S open
35
71
Creek Crossin cut

5A Earthquake Utility
Perennial Jack and
0
0
Creek Crossin bore

6 Earthquake Utility
Intermittent S/S open
39
78
Creek Crossin cut

9 Earthquake Utility
Perennial Jack and
0
0
Creek Crossin bore

•
•
•
0713 Section 401 Impact Summary.xls
Overall Impact Summary
Buffer Impacts:
Total Zone 1 Impacts:
Total Zone 2 Impacts:
Total Buffer Impacts:
Isa. feetl lacresl
53,526 1.229
91,635 2.104
145,161 3.332
Horvath Associates
2/11/2008
Impact Zone 1 Impact Zone 2 Impact Total Impact
2,361 s .feet 2,021 s .feet 4,382 sq. feet
1 0.054 acres 0.046 acres 0.101 acres
8,411 sq. feet 4,360 s .feet 12,771 s .feet
1 A 0.193 acres 0.100 acres 0.293 acres
6,232 sq. feet 18,805 s .feet 25,037 sq. feet
2 0.143 acres 0.432 acres 0.575 acres
2,164 sq. feet 604 sq. feet 2,768 s .feet
2A 0.050 acres 0.014 acres 0.064 acres
3,016 sq. feet 5,392 sq. feet 8,408 s .feet
3 0.069 acres 0.124 acres 0.193 acres
2,786 s .feet 110 sq. feet 2,896 sq. feet
3A 0.064 acres 0.003 acres 0.066 acres
0 s .feet 3,906 s .feet 3,906 s .feet
3B 0.000 acres 0.090 acres 0.090 acres
4,187 s .feet 2,088 s .feet 6,275 sq. feet
4 0.096 acres 0.048 acres 0.144 acres
866 sq. feet 6,636 s .feet 7,502 sq. feet
4A 0.020 acres 0.152 acres 0.172 acres
2,779 s .feet 3,051 sq. feet 5,830 sq. feet
4B 0.064 acres 0.070 acres 0.134 acres
10,603 s .feet 6,444 s .feet 17,047 s .feet
4C 0.243 acres 0.148 acres 0.391 acres
1,135 s .feet 4,101 s .feet 5,236 s .feet
5 0.026 acres 0.094 acres 0.120 acres
4,255 s .feet 13,248 s .feet 17,503 s .feet
SA 0.098 acres 0.304 acres 0.402 acres
2,163 s .feet 10,602 s .feet 12,765 s .feet
b 0.050 acres 0.243 acres 0.293 acres
0 s .feet 1,960 s .feet 1,960 s .feet
7 0.000 acres 0.045 acres 0.045 acres
0 s .feet 4,935 s .feet 4,935 s .feet
8 0.000 acres 0.113 acres 0.113 acres
1,819 s .feet 1,210 s .feet 3,029 s .feet
9 0.042 acres 0.028 acres 0.070 acres
749 s .feet 1,912 s .feet 2,661 s .feet
11 0.017 acres 0.044 acres 0.061 acres
0 s .feet 250 s .feet 250 s .feet
12 0.000 acres 0.006 acres 0.006 acres

PIN: 0860-03-33-3314 PID:193344
PIN: 0860-01-20-8767 PID:193361
PIN: 0769-01-28-5772 PID:193301
SIERRA PIN: 0769-01-27-6679 PID: 203869
IMPACT MAPS
LEESVILLE ROAD AND DOC NICHOLS ROAD
DURHAM, NORTH CAROLINA
WAKE FOREST HWY. (NC 98 )
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VICINITY MAP
NO SCALE
DEVELOPMENT SUMMARY
DEVELOPER SITE DATA LEGEND
EAST DURHAM LAND COMPANY, LLC TOTAL LAND AREA: AC or SF
ZONING: PDR 3.0 CH: STREAM CHANNEL
MIKE WHITEHEAD PROPOSED USE: RESIDENTIAL NB: NEUSE RIVER BASIN BUFFER
CARY, NC EXISTING USE: VACANT WL: WETLAND
[phone] RIVER BASIN: NEUSE RIVER (F-J/B) Zl: ZONE 1 (30' FROM TOP OF BANK)
Z2: ZONE 2 (20' FROM ZONE 1)
HORVATH ASSOCIATES, P.A. PROJECT COVER SHEET Proj #
0713
16 CONSULTANT PLACE, SUITE 201 Drwn By: JC Dwg No
DURHAM, NORTH CAROLINA 27707 Sierra
P 919.490.4990 F 919.490.8953 Leesville & Doc Nichols R Chk B JR 1
Date: 11/21/07
www.horvathassociates.com Durham, North Carolina Scale: 1"= N/A 1 of

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~ b coNSULrANr PLacE, suirE 20~ 0713 WETLAND DELINEATION PREPARED BY S&EC, INC, SURVEYED
DuRHaM, rioRrH ca,ROUNA 27707 Sierra Drwn By: JC Dwg No BY MSS LAND CONSULTANTS AND APPROVED BY THE RALEIGH
P 919.490.4990 F 919.490.8953 Leesville & Doc Nichols R Chk B : JR 2 REGULATORY FIELD OFFICE ON 28 SEPTEMBER 2005.
Date: i l /21 /07
www.horvathassociafes.com Durham, North Carolina 2 of
Scale: 1 "= 500'

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16 CONSULTANT PLACE, SUITE 201
DURHAM, NORTH CAROLINA 27707
P 919.490.4990 F 919.490.8953
www. horvathassociates.com
~~~~~~l
IMPACT
N0. TYPE S0. FT.
(CH and WL) LINEAR FT.
CH ONLY
Buffer & NB Z1 2,361 34'
Streom
(Sanitary Z2 2 021
----
Sewer) TOTAL 4,382
1A NB Z1 8,411 137'
Buffer & Z2 4,360
----
Streom
(Culvert) TOTAL 12,771
IMPACT MAP # 1 Proj #
0713
Sierra Drwn By: JC Dwg No
Leesville & Doc Nichols R Chk B : .1R 3
Date: 11/21/07
Durham, North Carolina Scale: 1"-100' 3 of
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HORVATH ASSOCIATES, P.A.
16 CONSULTANT PLACE, SUITE 201
DURHAM, NORTH CAROLINA 27707
P 919.490.4990 F 919.490.8953
www.horvathassociates.com
~ CULVERT PROFILE
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IMPACT PROFILE Proj #
0713
Sierra Drwn By: JC Dwg No
Leesville & Doc Nichols R Chk B : JR 4
Date: 11/21/07
Durham, North Carolina Scale: 1"= 50' 4 of
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0713
16 CONSULTANT PLACE, SUITE 201
NORTH CAROLINA 27707
DURHAM
Sierra Drwn By: JC Dwg No
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P 919.490.4990 F 919.490.8953 & Doc Nichols R
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16 CONSULTANT PLACE, SUITE 201
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P 919.490.4990 F 919.490.8953
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Stream Z2 604 ----
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OVERALL SITE MAP Proj #
0713
Sierra Drwn By: JC Dwg No
esville & Doc Nichols R
L Chk B : JR 6
e Date: 11 /21 /07
Durham, North Carolina
Scale: 1 "= 100' 3 of

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16 CONSULTANT PLACE, SUITE 201
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P 919.490.4990 F 919.490.8953
www.horvathassociates.com
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EXISTING GRADE
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IMPACT PROFILE Proj #
0713
Sierra Drwn By: ~c Dwg No
Leesville & Doc Nichols R Chk B : ~R 7
Date: 11/21/07
Durham, North Carolina s~aie: 1"= so' 3 of

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IMPACT TYPE S0. FT. LINEAR FT.
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3 NB
Buffer Z1 3,016 30'
Only Z2 5,392 ----
(Sanitary
Sewer) TOTAL 8,408
3A
NB
Buffer & Z1 2,786 ----
Streom Z2 110 ----
(Sanitary
Sewer) TOTAL 2,896
36 NB
Buffer Z1 ---- ----
Only Z2 3,906 ----
(Sanitary
Sewer) TOTAL 3,906
HORVATH ASSOCIATES, P.A. OVERALL SITE MAP Proj #
0713
16 CONSULTANT PLACE, SUITE 201 Drwn By: JC Dwg No
DURHAM, NORTH CAROLINA 27707 Sierra
P 919.490.4990 F 919.490.8953 Leesville & Doc Nichols R cnk B JR s
Date: 11/21/07
www.horvathassociates.com Durham, North Carolina scale: 1"-loo' 3 of

XISTING GRADE
5' LEFT OF CENTERLINE
EXISTING GRADE
CENTERLINE
EXISTING GRADE
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9 scA~ r•=sa
HORVATH ASSOCIATES, P.A.
16 CONSULTANT PLACE, SUITE 201
DURHAM, NORTH CAROLINA 27707
P 919.490.4990 F 919.490.8953
www.horvathassociates.com
z SANITARY SEWER PROFILE
9 SCALE 7"=50'
IMPACT PROFILES Proj #
0713
Sierra Drwn By: JC Dwg No
Leesville & Doc Nichols R Chk B : JR 9
Date: 11/21/07
Durham, North Carolina Scale: 1"- so' 3 of
10+00 10+50

i ~
~~ r ~Yl (~ tl'f ! ~J,FI jl ~~~f I ~r
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Buffer &
NB Z1
4,187
32' (INTER.)
Stream Z2 2,088 ----
Sanitary
ewer)
TOTAL 6,275
4A
NB
Buffer Z1 ---- ----
Only Z2 5,885 ----
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ewer)
TOTAL
5,885
4A
NB
Buffer Z1 866 ----
Only Z2 751 ----
~Bypass
hannel)
TOTAL
1,617
Buffe & NB Z1 2,180 35'
Stream Z2 2,045 ----
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46
Buffer
NB Z1
599
----
Only Z2 1,006 ----
Bypass
hannel) TOTAL 1,605
NB Z1 10
603 148'
Buffer & ,
Stream Z2 6,444 ----
(Culvert) TOTAL 17,047

Proj #
HORVATH ASSOCIATES, P.A. OVERALL SITE MAP
0713
16 CONSULTANT PLACE, SUITE 201
Sierra Drwr1 By: JC Dwg No
DURHAM, NORTH CAROLINA 27707 ~R 10
P 919.490.4990 F 919.490.8953 ls R
Ni
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Proj #
HORVATH ASSOCIATES, P.A. IMPACT PROFILE
0713
16 CONSULTANT PLACE, SUITE 201
2
0
Sierra Drwn By: JC Dwg No
77
7
DURHAM, NORTH CAROLINA
4990 F 919.490.8953
P 919
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R
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L Chk B JR 11
.
. c
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www.horvathassociates.com Durham, North Carolina Scale: 1"- 50' 3 of

i HORVATH ASSOCIATES, P.A.
16 CONSULTANT PLACE, SUITE 201
DURHAM, NORTH CAROLINA 27707
P 919.490.4990 F 919.490.8953
www.horvathassociates.com
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1 SANITARY SEWER PROFILE
12 scALe r~sv
IMPACT PROFILE
Sierra Drwn By: JC
hols R
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& D
Ni
L Chk B : JR
eesv
e
oc
c
Date: 11/21/07
Durham, North Carolina Scale: 1"- 50'
Proj #
0713
Dwg No
12
3 of
10+00 10+50

360
4' HIGH PVC COAT
CHAIN LINY. FENCE
(FOREST GREEN OR
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RIGHT BOX CULVER
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i HORVATH ASSOCIATES, P.A.
16 CONSULTANT PLACE, SURE 201
DURHAM, NORTH CAROLINA 27707
P 919.490.4990 F 919.490.8953
www.horvathassociates.com
COATED
FENCE
.EN OR BLACK
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PATOR
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NCDOT CLASS 1 RIPRAP
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13 scA~ r=so'
11+00 11+50
IMPACT PROFILE Proj #
0713
Sierra Drwn By: JC Dwg No
Ni
h
l
R
& D
ill
L Chk B : JR 13
c
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s
oc
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Durham, North Carolina s~aie: 1"= so' 3 of

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/ .i Buffer & ----
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(Culvert) TOTAL 17,047
Buffer NB Z1 419
/ ~~,~ Snly Z2 3.462 ----
...--~''~- ~ Sanitary
ewer) TOTAL 3,881
5
Buffer NB Z1 716 ----
(Only Z2 639 ----
~~''' ( Cgonnel) TOTAL 1,355
^ ~~ -,. 5A
~- Buffer & NB Z1 4,255 ----
~^ Stream Z2 13,248 ----
%~~ ~ ~ ^- (Sonitory
SSewer) TOTAL 17,503
HORVATH ASSOCIATES, P.A. OVERALL SITE MAP Proj #
0713
16 CONSULTANT PLACE, SUITE 201 Drwn By: JC Dwg No
DURHAM, NORTH CAROLINA 27707 Sierra
P 919.490.4990 F 919.490.8953 Leesville & Doc Nichols R Chk B JR 14
Date: 11/21/07
www.horvathassociates.com Durham, North Carolina Scale: 1"=100' 3 of

-,
I'
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~ -----
f --- ~

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Proj #
HORVATH ASSOCIATES, P.A. IMPACT PROFILE
0713
16 CONSULTANT PLACE, SUITE 201
Sierra Drwn By: JC Dwg No
DURHAM, NORTH CAROLINA 27707
4990 F 919.490.8953
P 919
490 l
R
Ni
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& D
ill
L Chk B JR 15
.
. s
c
o
oc
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eesv Date: 11/21/07
www.horvathassociates.com Durham, North Carolina Scale: 1"= 50' 3 of

Q
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EXISTING GRADE
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EXISTING GRADE
25' RIGHT OF CENTERLINE
~ SANITARY SEWER PROFILE
16 scA~ r'=sa
HORVATH ASSOCIATES, P.A. IMPACT PROFILE Proj #
0713
16 CONSULTANT PLACE, SUITE 201 Drwn By: JC Dwg No
DURHAM, NORTH CAROLINA 27707 Sierra
P 919.490.4990 F 919.490.8953 Leesville & Doc Nichols R Chk B JR 16
Date: 11/21/07
www.horvathassociates.com Durham, North Carolina Scale: 1"= 50' 3 of
10+00 10+50

_ r ~ ~ I ,
t
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Buffer NB Z1 4,255 ----
Only Z2 13,248 ----
(Sanitary TOTAL 17,503
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6
Buffer
NB Z1
2,163
39'
Only Z2 10,602 ----
(Sanitary TOTAL 12,765
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r
HORVATH ASSOCIATES, P.A.
16 CONSULTANT PLACE, SUITE 201
DURHAM, NORTH CAROLINA 27707
P 919.490.4990 F 919.490.8953
www. horvathassociates. com
I;i=
OVERALL SITE MAP Proj #
0713
Sierra Drwn By: JC Dwg No
Nichols R
ill
& D
L Chk B : JR 17
eesv
e
oc Date: 11/21/07
Durham, North Carolina Scale: 1"= loo' 3 of

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18 scn~e i°=so~
Proj #
HORVATH ASSOCIATES, P.A. IMPACT PROFILE
0713
16 CONSULTANT PLACE, SUITE 201
NORTH CAROLINA 27707
DURHAM
Sierra Drwn By: JC Dwg No
,
P 919.490.4990 F 919.490.8953 Nichols R
& Do
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L Chk B JR 18
eesv
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/ ~
/,;%r-
i~ ;i'
IMPACT
N0. TYPE S0. FT.
(CH and WL) LINEAR FT.
CH ONLY
6
Buffer
NB Z 1
2,163
39'
Only Z2 10,602 ----
(Sonitary
SSewer) .TOTAL 12,765
7
Buffer
NB Z1
----
----
Only Z2 1,960 ----
(Sonitary
SSewer) TOTAL 1,960

HORVATH ASSOCIATES, P.A.
16 CONSULTANT PLACE, SUITE 201
DURHAM, NORTH CAROLINA 27707
P 919.490.4990 F 919.490.8953
www. horvathassociates.com
OVERALL SITE MAP
Sierra Drwn By: JC
Leesville & Doc Nichols R cr,k B : JR
Date: 11/21/07
Durham, North Carolina Scale: 1"- loo
Proj #
0713
Dwg No
19
3 of

`~ C? A i•
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HORVATH ASSOCIATES, P.A.
16 CONSULTANT PLACE, SUITE 201
DURHAM, NORTH CAROLINA 27707
P 919.490.4990 F 919.490.8953
www, horvathassociates.com
~ ;~ ~,=r-
j~,
r~
IMPACT
N0. TYPE SO. FT.
(CH and WL) LINEAR FT.
CH ONLY
NB Z1
Buffer ---- ----
Only ZZ 1,960 ----
(Sanita
SSewer) TOTAL 1,960
8 NB

Buffer 11
----
----
Only 12 4,935 ----
(Sanitar TOTAL 4,935
SSewer
~; ``,~,/
,~'
\ ~
~~
~~ ~
Proj #
IMPACT MAP
0713
Sierra Drwn By: JC Dwg No
Ni
h
l
R
& D
ill
L Chk B : JR 20
o
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c
oc
eesv
e
Date: 11/21/07
Durham, North Carolina Scale: 1"- 100' 3 of

~ ~ ~ ~' r
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8
NB
Buffer Z~ ---- ----
Only Z2 4,935 ----
(Sanitary TOTAL 4,935
Sewer
8A
WL
Wetlands 2,628
Only
(Sanitary
Sewer

. HORVATH ASSOCIATES, P.A.
16 CONSULTANT PLACE, SUITE 201
DURHAM, NORTH CAROLINA 27707
P 919.490.4990 F 919.490.8953
www.horvathassociates.com
IMPACT MAP Proj #
0713
Sierra Drwn By: JC Dwg No
Leesville & Doc Nichols R Chk B : JR 21
Date: 11/21/07
Durham, North Carolina Scale: 1"-loo' 3 of

~ ~~ .
\ t i\ ~~~ ~
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~ \\\ ~ ?~
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f I ~ l~l l"I ' 1 1 s P~R NI~L~`~~ ~~ ` . ~ ; ~ ;
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' HORVATH ASSOCIATES, P.A.
16 CONSULTANT PLACE, SUITE 201
DURHAM, NORTH CAROLINA 27707
P 919.490.4990 F 919.490.8953
www. horvathassociates.com
l~
~~
~ ~~
o ~.
IMPACT TYPE SO. FT. LINEAR FT.
N0. (CH and WL) CH ONLY
Buffer & NB Z1 1,819 ----
Stream Z2 1,210 ----
Sanitary
ewer) TOTAL 3,029
9A yyL
Wetlands 9,328
(Sanitary
Sewer)
• M
• ~
IMPACT MAP ' ' `~' "
0713
Sierra Drwn By: JC Dwg No
Leesville & Doc Nichols R Chk B : JR 22
Date: 11/21/07
Durham, North Carolina Scale: 1"= 100' 3 of
\ ~
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• HORVATH ASSOCIATES, P.A.
16 CONSULTANT PLACE, SUITE 201
DURHAM, NORTH CAROLINA 27707
P 919.490.4990 F 919.490.8953
www.horvathassociates.com
94+00 94+50 95+00
~ SANITARY SEWER PROFILE
22 S~A~E,.~~,
IMPACT PROFILE
Sierra Drwn By: JC
Leesville & Doc Nichols R Chk B : JR
Date: 11/21/07
Durham, North Carolina Scale: 1"= so'
310
300
290
Proj #
0713
)wg No
22
3 of

`~, ` `
._ ,
_. a ;
•, r ;
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( }~

IMPACT TYPE S0. FT. LINEAR FT.
N0. (CH and WL) CH ONLY
11 NB
Buffer Z1 749 ----
Only Z2 1,912 ----
(Road
Fill) TOTAL 2,661
(~ ~ t
iI ~i---- ~j ~ 1 1 ~ t i
HORVATH ASSOCIATES, P.A.
16 CONSULTANT PLACE, SUITE 201
DURHAM, NORTH CAROLINA 27707
P 919.490.4990 F 919.490.8953
www.horvathassoc iates.com
OVERALL SITE MAP Proj #
0713
Sierra Drwn By: JC Dwg No
hols R
Ni
& D
L
ill Chk B : JR 23
oc
c
eesv
e
Date: 11/21/07
Durham, North Carolina Scale: 1"- loo' 3 of

\.. ..
.., .. r ~ ~ _..
- ,
` __. ~~ ~~
__.--
/' r' r
~' t
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~s
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~~ E ~, .'~tio~r,. ~, k,,,... i - ~. AREA #12 ~,~.
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IMPACT TYPE SQ. FT. LINEAR FT.
N0. (CH and WL) CH ONLY
12 NB
Buffer Z1 ---- ----
OnIY Z2 250 ----
(Rood
Fill) TOTAL 250
HORVATH ASSOCIATES, P.A.
16 CONSULTANT PLACE, SUITE 201
DURHAM, NORTH CAROLINA 27707
P 919.490.4990 F 919.490.8953
www. horvathassociates.com
OVERALL SITE MAP Proj #
0713
Sierra Drwn By: JC Dwg No
Leesville & Doc Nichols R Chk B : JR 24
Date: 11/21/07
Durham, North Carolina Scale: 1"=100' 3 of

IMPACT
AREA #T1
r'r
1 S. ~`
I ,~,
~~ ~
/ - i 'f /~''~ ' / `/
r ~ ,,,: - .---,~.-~,,
A m ~ ~ ~ ~ ~~fi~~r
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a
HORVATH ASSOCIATES, P.A
16 CONSULTANT PLACE, SUITE 201
DURHAM, NORTH CAROLINA 27707
P 919.490.4990 F 919.490.8953
www. horvathassoc iates.com
%~
~,,.
~ \:
~` '
i
IMPACT
N0. TYPE SQ. FT.
(CH and WL) LINEAR FT.
CH ONLY
Temporary
Buffer Onl
TEMP #1
1,385
0
(Culvert)
Temporary
Buffer Onl
TEMP #2
1,382
0
(Culvert)
TEMPORARY EROSION CONTROL IMPACTS
Sierra Drwn By: JC
l
R
Ni
h
& D
ill
L Chk By: JR
c
o
s
oc
eesv
e
Date: 11/21/07
Durham, North Carolina Scale: 1"= so'
Proj #
0713
Dwg No
25
3 of
IMPACT
AREA #T2
:.~-- I
__ ~
~' ~ .~ ~
- _ __ ~ /

Name of Strearn Description
Curr. Class Date Prop. Class Basin Stream Index #
Rocky Branch From source to a point WS-IV;NSW 08/01/98
0.5 mile upstream of
Durham County SR 1802
Rocky Branch From a point 0.5 mile WS-IV;NSW, COB/01/98
upstream of Durham A
County SR 1802 to Falls
Lake, Neuse River
Little Lick Creek From source to a point WS-IV;NSW 08/01/98
0.4 mile upstream of
Durham County SR 1611
Chunky Pipe Creek From source to Little WS-IV;NSW 08/03/92
Lick Creek
Little Lick Creek From a point 0.4 mile WS-IV;NSW, C08/01/98
(including upstream of Durham SR A
portion of Little 1811 to Falls Lake,
Lick Creek Arm of Neuse River
Falls Lake)
Lick Creek From source to Wake WS-IV;NSW 08/01/98
County SR 1809
Martin Creek From source to Lick WS-IV;NSW 08/03/92
Creek
Neuse 27-7-(1)
Neuse 27-7-(2)
Neuse 27-9-(0.5)
Neuse 27-9-1
Neuse 27-9-(2)
Neuse 27-11-(0.5)
Neuse 27-11-1
Lick Creek From Wake County SR WS-IV;NSW,C08/01/98 Neuse 27-i1-(1.5)
1809 to Falls Lake, A
Neuse River
Rocky Branch From source to a point WS-IV;NSW 08/01/98 Neuse 27-11-2-(1)
0.3 mile upstream of
mouth
Rocky Branch From a point 0.3 mile WS-IV;NSW,C09/01/98 Neuse 27-11-2-(2)
upstream of mouth to A
Lick Creek
Laurel Creek From source to a point WS-IV;NSW 08/01/98 Neuse 27-11.5-(0.5)
0.1 mile upstream of
N.C. Hwy. 98
Laurel Creek From a point 0.1 mile WS-IV;NSW,C08/01/98 Neuse 27-11.5-(0.7)
upstream of N.C. Hwy. A
98 to Falls Lake, Neuse
River
Unnamed Tributary From source to a point WS-IV;NSW 08/01/98 Neuse 27-11.5-1-(1)
to Laurel Creek 0.1 mile upstream of
backwaters of Perry Pond
Unnamed Tributary From a point 0.1 mile WS-IV;NSW,COS/01/98 Neuse 27-11.5-1-(2)
to Laurel Creek upstream of backwaters A
(Perry Pond) of Perry Pond to Laurel
Creek
Brier Creek From source to Crabtree C;NSW 05/01/88 Neuse 27-33-4
Lake, Crabtree Cr.
Little Brier Creek From source to Brier C;NSW OS/O1/88 Neuse 27-33-4-1
Creek
Stirrup Iron Creek From source to Brier C;NSW 05/01/88 Neuse 27-33-4-2
Creek
Page 5 of 6

~~F WATFRQ Michael F. Easlcy, Governor
~~ G William G. Ross Jr., Secretary
~ ~ North Carolina Department of Environmrnt and Natural Resources
~ ~
(~ .r Colern 11. Sullins, Director
Division of Water Quality
Memorandum
August 20, 2007 .
From: Coleen H. Sullin
Subj: Policy Change Regarding the R lew and Approval of Stormwater Management Plans
Associated with 401 Certification Applications
The purpose of this memorandum is to initiate and publicize a major change in the review and approval
of Stormwater Management Plans (SMPs) submitted as part of the 401 Certification application process.
At present, all activities that require a 401 Certification and that will also have impervious surface
coverage equal to or greater than 30%* (this 30% is referred to as the "impervious surface threshold")
are required to submit a stormwater management plan as part of the 401 application process for review
and approval by appropriate DWQ 401 Staff. This current DWQ review and approval is in addition to
any local government review and approval of the SMP that may be required under local government
implementation of aState-mandated stormwater program. In an effort to maximize the use of limited
staff resources at the State and local level, and in order to streamline the permitting process alyd remove
any unnecessary duplication in the review of these stormwater management plans, effective on the date
of this memorandum, SMPs that have been approved by an element of a local government as part of that
local government's implementation of aState-mandated stonnwater control program, will not require
additional stormwater approval from DWQ 401 Staff for the approval and issuance of the 401
Certification, For the purposes of this policy, local approval of the SMP under the following State
stormwater programs shall satisfy this requirement and shall not require the approval of the SMP by
DWQ 40l permitting staff as part of the 401 application process:
• Water Supply Watershed II, III, and IV
• Local Implementation of fire NPDES Phase 2 Program
• Universal Stormwater Management Program
• Nutrient Sensitive Waters (NSW) Stormwater Nutrient Loading Limits
• Randleman Lake Water Supply Watershed Stormwater Requirements
Under this new policy, applicants shall submit:
1. A valid approval letter from the appropriate local government indicating that the proposed
activity has a SMP that has been approved and indicating under which State stormwater program
the approval has been granted along with a copy of the approved SMP, or
2. If the necessary local approval of the SMP has not yet been obtained at the time of application,
the application should indicate that a SMP has been, or will be, submitted for local government
approval, indicate the local government that approval is being requested from, and indicate under
what State stormwater program the activity will be covered by_ Any 401 Certification approved
under this st~arario shall be conditioned so that the proposed activity shall not commence until
such time that the appropriate local approval has been granted. In addition, following local r~,~tltlirta
,NN lllll,/
North Carolina Divisiam of Water Quality 1517 Mail Service Center Raleigh, NC 27699-161.7 Phone [phone] Customex 3etvice
Internet: www.ricwatetqualitxot¢ Location: Sl2 N. Salishury St. Ralegh, NC 27604 Fax [phone]~623fi748
An Equal o{>porAaalylAPnrtnative Action Emaoyer - 50% Retycled1109L Past Coraamter Paper

government approval, a copy of the approved SMP shall be submitted to DWQ for record-
keeping purposes.
Applications for 401 Certifications for proposed activities that exceed the impervious surface threshold
but are not within a local jurisdiction that is implementing a State stormwater program must still contain
a SMP for DWQ review and approval. Applications that exceed the impervious surface threshold and
do not contain a SMP or the information specified in #1 and #2 above, shall be returned as incomplete.
As a result of this policy change, the Division of Water Quality will develop a comprehensive training
program for those local government personnel directly involved in the SMP review and approval
process. Once this training program leas been developed, the Division will require that local SMP
review personnel attend and successfully complete this course of instruction in o~~der to continue the
implementation of this policy within that local jurisdiction. The Division will also develop a proactive
audit and review program that will be intended to ensure that the applicable stormwater program
requirements are being successfully implemented at the local level.
Notwithstanding the policy previously set forth within this document, the Director of the Division of
Water Quality reserves the right to require the review and approval of individual stormwater
management plans on a case-by-case basis in order to ensure that a proposed activity will not violate
water quality standards. Additionally, the DWQ Director reserves the prerogative to provide comments
to local governments of special provisions that may need to be incorporated into locally-reviewed SMPs
in order to provide an enhanced level of protection to sensitive watersheds or to provide au enhanced
level of stormwater control on unusual projects.
Please direct questions regarding this new policy to Tom Reeder at 919-733-5083 extension 528 or at
tom.reeder~ncmail.net or Cyndi Karoly at 919-733-9721 or at c~mdi.karoly(a~ncmail.net .
'~ Note: Under the ongoing renewal of the NC General Certifications it has been proposed to lower the
impervious surface threshold to 24% when the new General Certifications go into effect.
•

•
IMPERVIOUS SURFACE AREA CALCULATIONS
(Phase 1 j
TOTAL AREA = 422.60 AC (18,408,566 SF)
MAXIMUM ALLOWABLE IMPERVIOUS AREA = 4,418,055 SF (24~)
STREETS /SIDEWALK /PARKING = 988,035 SF (5.369b)
•
TOWNHOMES:
130 UNITS x 1,200 SF/UNR = 156,000 SF (0.859b)
60' UNITS:
152 UNITS x 2,400 SF/UNIT = 364,800 SF (1.989b)
70' UNITS:
105 UNRS x 2,800 SF/UNIT = 294,000 SF (1.599b)
80' UNITS:
112 UNITS x 3,200 SF/UNIT = 358,400 SF (1.949b)
MISCELLANEOUS RESERVE = 13,254 SF (0.079b)
CLUBHOUSE/POOL = 101,664 SF (.55%)
TOTAL PROPOSED IMPERVIOUS AREA = 2,277,153 SF (12.370
FUTURE IMPERVIOUS SURFACE AREA CALCULATIONS
(Total Build Out)
TOTAL AREA = 422.60 AC (18,408,566 SF)
MAXIMUM ALLOWABLE OVERALL IMPERVIOUS AREA = 4,418,055 SF (24~)
PHASE (IMPERVIOUS = 2,277,153 SF (12.379b)
PHASE II RESERVE IMPERVIOUS AREA = 2,140,902 SF (11.630
OVERAL FUTURE IMPERVIOUS AREA = 4,418,055 SF (24~)
•

•
PI N: 0860-03-33-3314 PID: 193344
PIN: 0860-01-20-8767 PID: 193361
PIN :0769-01-28-5772 PI D: 193301
PIN: 0769-O1-27-6679 PID: 203869
•
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•

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HORVATH USGS SE DURHAM MAP CHECKEDgBFT
16 CONSULTANT PLACE SURE 201
DURHAM, NORTH CAROLINA 27107 SIERRA SCALE
P 919.490.4990 F 919.490.8953 ~ ~~_ ~ ~~
537 MARKET STREET. SURE LL20 DOC NICHOLS RD AND LEESVILLE RD DATE
CHATTANOOGA, TENNESSEE 37402 ~ ~' 15-2007
P423.266.4990 F423.266.5700 PROJECT NO
www.horvatnassoclates.com DURHAM, NORTH CAROLINA 0713

•
SOILS MAP 28
SOILS MAP 33
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.......................
HORVATH
ASSOCIATE S
16 CONSULTANT PLACE SUffE 201
DURHAM, NORTH CAROLINA 27707
P 919.490.4990 F 919.490.8953
537 MARKET STREET, SUffE LL20
CHATTANOOGA, TENNESSEE 37402
P 423.266.4990 F 423.266.5700
www.horvath associates.com
.......................................................
DRAWN BY:
DURHAM COUNTY SOILS MAPS 28 & 33 CHECKEDgBFT
SCALE
SIERRA 1"=1000'
11-15-2007
DOC NICHOLS RD AND LEESVILLE RD DATE
DURHAM, NORTH CAROLINA PROJECT NO
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~•-
~ .~ ~Fa~~stem
PROGRAM
December 11, 2007
Expiration of Acceptances June 13, 2007
Jerry Rodman
East Durham Land Co., LLC
201 Shannon Oaks Circle
Raleigh, NC 27511.
Project: Sierra County: Durham
We have received your request to access the North Carolina Ecosystem Enhancement Program's (NCEEP) In-Lieu Fee
mitigation program for the above referenced project. We regret that we are unable to accept the full amount of credit
requested at this time. This letter constitutes an acceptance of a portion of the mitigatio.~ you have requested.
EEP recently proposed a revision to the fee schedule for wetland and stream mitigation as a means of allowing the program
to collect fees commensurate with our project implementation costs. The revision was passed by the Environmental
Management Commission and Rules Review Commission but has been delayed due to administrative rules regarding
comment submittals. Per established protocols for rule-making, the fee revision will now be considered during the next
legislative session beginning in May 200$. Until that time, EEP has developed a strategy that considers the financial
implications to the program for new requests to access the In-Lieu Fee Program and has determined that we are only able to
accept a portion of your mitigation request at this time. If you wan[ to resubmit your request form at a later, time, EEP will
reconsider the request in the future. We anticipate updating our strategy as new data and opportunities become available.
EEP will consider all requests on a case-by- case basis.
•. Based on the information supplied by you the impacts that may require compensatory mitigation are summarized in the
fallowing table.
Neuse
03020201 Stream (feet) Wetlands (acres) Buffer I

(Sq.1~t.) Buffer II

(Sq. Ft.)
Cold Cool Warm Ri avian Non-Ri avian Coastal Marsh
Impacts Requested 0 0 154 0 0 0 29,020 9,965
Impacts Accepted p 0 0 0 0 0 29,020 9,965
Credits 0 0 0 0 0 0 87,Oti0 14,948
EEP is willing to accept payment for impacts associated with the above referenced project as indicated in the table above.
Please note that this decision does not assure that the payment will be approved by the permit issuing agencies as mitigation
for project impacts. It is the responsibility of the applicant to contact these agencies to determine if payment to the NCEEP
will be approved.
This acceptance is valid for six months from the date of this letter and is not transferable. If we have not received a copy of
the issued 404 Pernvt/401 CertiGcatio,n/CAMA permit within this time frame, this acceptance will expire. It is the
applicant's responsibility to send copies of the permits to NCEEP. Once NCEEP receives a copy of the permit(s) an invoice
will be issued based on the required mitigation in that permit and payment must be made prior to conducting the authorized
work. The amount of the In Lieu Fee to be paid to NCEEP by an applicant is calculated based upon the Fee Schedule and
policies listed at www.nceep.net.
Upon receipt of payment, EEP will take responsibility for providing the compensatory mitigation. If the regulatory agencies
require mitigation credits greater than indicated above, and the applicant wants NCEEP to be responsible for the additional
mitigation, the applicant will need to submit a mitigation request to NCEEP for approval prior to permit issuance. The
mitigation will be performed in accordance with the Memorandum of Understanding between the N. C. Department of
Environment and Natural Resources and the U. S. Army Corps of Engineers dated November 4, 1998. ~~ w
R~storciyt~... ~ ... PYOt~ Ou,~ Stag ~C,DE~IR
North Carolina Ecosystem Enhancement Program, 1652 Mail Service Center, Raleigh, NC 27699-1652 / 919-715-0476 / www.nceep.net

If you have any questions or need additional information, please contact Kelly Williams at (919} 716-1921.
•
Sincerely,
William D. Gilmore, PE
Director

cc: Cyndi Karoiy, NCDWQ Wetlands/401 Unit
Eric Alsmeyer, USACE-Raleigh
Any Chapman, NCDWQ Wetlands/401 Unit
John Schrum, agent
File
•
R~,stort,~... F ... Pro~-,c:tz~ Ouse Sfut~
~~~
North Carolina Ecosystem Enhancement Program, 1652 Mad Service Center, Raleigh, NC 27699-1 652 1 91 9.715-0476 / www.nceep_net

~~'' ~'~.EqQ
O !r G
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May 26, 2006
MacGregor Development
Attn: Bruce Herbert
201 Sham~on Oaks Circle, Suite 201
Cary, NC 27707
l~
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v~Ji'~ ~ _,~ -,
~~ Ali
MACGREGOR DEVELOPPJIEVT CO.
NBR# 06-135
Durham Countv
BASIN:
Neuse River X
(1~A NCAC 2B .0233)
Complaint
Incident #
NOV
Michael F Easley, Governor
I~illiam G Ross Jr ,Secretary
Nerth Carolina Department of EnvironmePt and Natural Resources
Alan W. Klimek, P.E. Director
Tar-Pamlico
(15A NCAC 2B .0259)
Buffer Determination X
Appeal Call
Project Name: Earthquake Addition S& EC# (8781.w3)
Location/Directiotls: Located south of the intersection of SR 1908 and SR 1905 and north of the SR 1906
•
Subject Stream: UT to Lick Creek
Date of Determination: 5/9/2006
Feature(s) Not
Subject Subject Start @ Stop@ Stream
Form Pts. Soil
Survey USGS
Topo
A X X X
B X X X
C X Stop
channel
fla X X
D X MO1 fla X X
E X X

•
Explanation: The feature(s) listed above has or have been located on the Soil Survey of Durham County, North
Carolina or the most recent copy of the USGS Topographic map at a 1:24,000 scale. Each feature that is checked
"Not Subject" has been determined not to be a stream or is not present on the property. Features that are checked
"Subject" have been located on the property and possess characteristics that qualify it to be a stream. There may be
other streams other streams located on your property that do not show up on the maps referenced above but, still
maybe considered jurisdictional according to the US Army Corps of Engineers and/or to the Division of Water
Quality.
NorthCarolina
~Nahrrally
North Carolina Division of Water Quality Raleigh Regional Office Surface Water Protection Phone [phone] Customer Service
Internet: h2o.enr.state.ne.us 1628 Mail Service Center Raleigh, NC 27699-1628 FAX (919) ?71-4718 1-377-623-6748

Earthquake Cre:~ Adailion =r r
Durham Counfv
5/26/2006
Page 2 of 2 -
This on-site determination shall expire fi~~e (5) tears from the date of this letter. Landowners or affected
parties that dispute a determination made by the D\\'Q or Delegated Local Authority that a surface water
exists and that it is subject to the buffer rule may request a determination by the Director. ,~ request for a
deternunation by the Director shall be referred to the Director in writing c/o Cyndi Karoly ,DWQ
Wetlands/401 Unit, 2321 Crabtree Blvd., Raleigh, NC 27604-2260. Individuals that dispute a determination
by the DWQ or Delegated Local Authority that "exempts" a surface water from the buffer rule may ask for
an ad judicatory hearing. You must act within 60 da}'s of the date that you receive this letter. Applicants are
hereby notified that the 60-day statutory appeal time does not start until the affected party (including
downstream and adjacent landowners) is notified of this decision. D\VQ recommends that the applicant
conduct this notification in order to be certain that third party appeals are made in a timely manner. To ask
for a hearing, send a written petition, which conforms to Chapter 150B of the North Carolina General
Statutes to the Office of Administrative Hearings, 6714 Mail Service Center, Raleigh, N.C. 27699-6714. This
determination is final and binding unless you ask for a hearing within 60 days.
The (owner/future owners) should notify the Division of Water Quality (including any other Local, State,
and Federal Agencies) of this decision concerning an}~ future correspondences regarding the subject property
(stated above). This project may require a Section 404/401 Permit for the proposed activity. Any inquiries
should be directed to the Division of Water Quality (Central Office) at (919)-733-1786, and the US Army
Corp of Engineers (Raleigh Regulatory Field Office) at (919)-876-8441.
Respectfully,
• Michael Horan
Environmental Spec. I
CC: Maximilian Merrill, S & EC, 11010 Raven Ridge Road, Raleigh, NC 27614
KB Homes, Attn: Chris Prussman, 2610 Wycliff Road, Suite 102, Raleigh, NC 27607
Joe Pearce, Durham County Engineering, P 120 East Parrish St., Durham, NC 27701
Todd Tugwell-US Army Corps of Engineers, Raleigh Regulatory Office
Wetlands/ Stormwater Branch, 2321 Crabtree Blvd, Suite 250, Raleigh. NC 27604
File Copy
Central Files
• One
No Carolina
~turall~
North Carolina Division of Water Quality Raleigh Regional Office Surface Water Protection Phone [phone] Customer Service
Internet: h2o.enr.state.nc.us 1628 Mail Service Center Raleigh, NC 27699-1628 FAX [phone]
An Equal OpportunitylAffirmative Action Employer - 50% Recycled110% Post Consumer Paper

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Project Number:
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Map Tftle:
Figure 2. Soils Map
Earthquake Creek
Earthquake Greek Addition
Project #: 878 I .W3
Durham CO, NC
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11010 Raven Ridge Rd.- Raleigh, NC 27614
[phone] •[phone]
Web Page: wmJw SandEC com
Date: ~ Source:
' 04/20/06 Durll~rn Co Soils Survey

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Map Tltle:
Flgure I . USGS Quad
Earthquake Creek
Earthquake Creek Addltlon
Project #: 8781 . W3
Durham CO, NC
Source:
South East Durham Quad
~ Soil & Environmental Consultants, PA
11010 Raven Ridge Rd.• Raleigh, NC 27614
[phone] • (919) 8469467
Web Page: www.SandEC.com

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Michael F Easley, Governor
~J'Jilliam G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
May 26, 2006
MacGregor Development
Attn: Bruce Herbert
201 Shannon Oaks Circle, Suite 201
Cary, NC 27707
BASIN:
Neuse River X
Tar-Pamlico
Alan W. Klimek, P.E. Director
Division of Water Quality

MACGREGOR DEVELOP~~ENT CO.
NBR# 06-136
Durham County
(1~A NCAC 2B .0233) (15A NCAC 2B .0259)
Complaint NOV Buffer Determination X
Incident #
Call
Project Name: Earthquake (Ross Tract) S&.EC# (8781.w3)
Location/Directions: Located south of the intersection of SR 1908 and SR 1905 and north of the SR 1906

Subject Stream: UT to Lick Creek
Date of Determination: 4/17/2006
Feature(s) Not
Subject Subject Start @ Stop@ Stream
Form Pts. Soil
Survey USGS
Topo
A X A01 X
B X B1 B2 X
C X C1 X
D X DO1 & D03 D2 X
E X E01 X
F X FO1 X
H X HO1 X
I X I01 X
J X X X
Explanation: The feature(s) listed above has or have been located on the Soil Survey of Durham County, North
Carolina or the most recent copy of the USGS Topographic map at a 1:24,000 scale. Each feature that is checked
"Not Subject" has been determined not to be a stream or is not present on the property. Features that are checked
"Subject" have been located on the property and possess characteristics that qualify it to be a stream. There may be
other streams other streams located on your property that do not show up on the maps referenced above but, still
maybe considered jurisdictional according to the US Army Corps of Engineers and/or to the Division of Water
Quality.
•
This on-site determination shall expire five (5) years from the date of this letter. Landowners or affected ~"` Carolina
parties that dispute a determination made by the DWQ or Delegated Local Authority that a surface water ~t1lCll~~f
North Carolina Division of Water Quality Raleigh Regional Office Surface Water Protection
Internet: h2o.enr.state.nc.us 1628 Mail Service Center Raleigh, NC 27699-1628
Phone [phone] Customer Service
FAX (919) j71-4718 1-877-623-6748
An Eoual OooortunitvlAffirmativP Artinn Fmnlnvar- r,(1% Rarvrlarill na/ Pncr (`n~ciimcr Pancr

•
•
•
_af1.hGU_~k0 i'OSS i i"<3Ct ~ r. . 7- '~ :~~ V/,~
Durham Couniv
5/26/2006
Pace 2 of 2
maybe considered jurisdictional according to the U5 ~1rn~y Coils of Engineers and/or to the Division of ~~Iater
Quality.
This on-site determination shall expire five (5) years from the date of this letter. Landowners or affected
parties that dispute a determination made by the DWQ or Delegated Local Authority that a surface water
exists and that it is subject to the buffer rule may request a determination by the Director. A request for a
deternnation by the Director shall be referred to the Director in writing c/o Cyndi Karoly ,DWQ
Wetlands/401 Unit, 2321 Crabtree Blvd., Raleigh, NC 27604-2260. Individuals that dispute a determination
by the DWQ or Delegated Local Authority that "exempts" a surface water from the buffer rule may ask for
an ad judicatory hearing. You must act within 60 days of the date that you receive this letter. Applicants are
hereby notified that the 60-day statutory appeal time does not start until the affected party (including
downstream and adjacent landowners) is notified of this decision. DWQ recommends that the applicant
conduct this notification in order to be certain that third party appeals are made in a timely manner. To ask
for a hearing, send a written petition, which conforms to Chapter 150B of the North Carolina General
Statutes to the Office of Adnunistrative Idearings, 6714 Mail Service Center, Raleigh, N.C. 27699-6714. This
determination is final and binding unless you ask for a hearing within 60 days.
The (owner/future owners) should notify the Division of Water Quality (including any other Local, State,
and Federal Agencies) of this decision concerning any future correspondences regarding the subject property
(stated above). This project may require a Section 404/401 Pernut for the proposed activity. Any inquiries
should be directed to the Division of Water Quality (Central Office) at (919)-733-1786, and the US Army
Corp of Engineers (Raleigh Regulatory Field Office) at (919)-876-8441.
Respectfully,
:-n~~~w-
Michael Horan
Environmental Spec. I
CC: Maximilian Merrill, S & EC, 11010 Raven Ridge Road, Raleigh, NC 27614
KB Homes, Attn: Chris Pressman, 2610 Wycliff Road, Suite 102, Raleigh, NC 27607
Joe Pearce, Durham County Engineering, P 120 East Parrish St., Durham, NC 27701
Todd Tugwell-US Army Corps of Engineers, Raleigh Regulatory Office
Wetlands/ Stormwater Branch, 2321 Crabtree Blvd, Suite 250, Raleigh, NC 27604
File Copy
Central Files
No~iYhCarolina
~aturall~
North Carolina Division of Water Quality Raleigh Regional Office Surface Water Protection Phone [phone] Customer Service
Internet: h2o.enr.state.nc.u5 1628 Mail Service Center Raleigh, NC 27699-1628 FAX [phone] I-877-623-6748

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Map Tltle:
Flgure I . USGS Quad
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Project #: 8781 .W3
Durham CO, NC
Source:
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Scale:
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Date:
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Map Tltle:
Figure 2. Soll Survey Map
Earthquake Creek
(Egypt Tract)
Project #: 878 I . W3
Durham CO, NC
Sovrce:
Durham Co Soll Survey
~ Soil & Environmental Consultants, PA
11010 Raven Ridge Rd.• Raleigh, NC 27614
(919}846-5900 - (919) 84694&7
Web Page: www.SandEC.com
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Project Name: Ross Tract
Project #: 8781.W3
Project Manager: David Gainey
Site Location: Durham, NC
Source: DOT GIS/ Durham County
1 /23/06
1"= 200FT
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o X13 Ac~~y
~~F W A TF9 Michael F. Easley, Governor
\~ Q(, William G. Ross Jr., Secretary
Uj ~ North Carolina Department of Environment and Natural Resources
~ -I
p .~ Coleen H. Sullins, Director
Division of Water Quality
December 21, 2007
Durham County
EXP# 07-2022
EXPRESS REVIEW NOTIFICATION LETTER
East Durham Development Company, LLC
Attn: Mr. Michael Whitehead
201 Shannon Oaks Circle
Raleigh, NC 27511
Project Name: Sierra Residential Subdivision
Dear Mr. Whitehead:
On December 19, 2007, the Express Review Program of the Division of Water Quality (DWQ) received your
application for the above referenced project. The DWQ has determined that your application will require additional
information. Please provide the following information so that we may continue to review your project and
prevent denial of your application as required by 15A NCAC 2H .0506:
1. The submitted application is for a residential subdivision, NW29 (GC 3705). You have currently submitted a
partial application (only including the road structures). Large subdivision projects can be phased,
geographically by quadrants, but not as you have submitted. It is recommended that an office meeting be
conducted after January 1, 2008 (preferably on January 2"d) in order to clarify the numerous items detailed
below. The express clock will stop for the holidays at Spm of December 21, 2007 and restart again on January
2, 2007.
2. Please follow the guidelines in the PCN addendum.
a. As per the guidelines, site "plans must show all built-out structures and impervious cover. The plans
must include the final grading contours with elevations. The plans must indicate all utilities and
easements".
b. Additionally, platted parcels must be developable without further impacts to jurisdictional and non-
jurisdictional wetlands, streams, water features, and- State regulated buffers. These parcels must be
shown in order to determine that no further impacts will occur.
c. Please clearly depict all of the wetland boundaries on the property.
d. Please provide maps (at least 1:100) in sufficient detail to observe all parcels and features.
3. Diffuse Flow Provisions:
a. Every proposed BMP structure for stormwater management or diffuse flow provisions shall be
permanent, and not temporary. If a temporary BMP is needed for phase I and will be removed during
future phases of development, please understand that a new (and appropriate) BMP must be approved
by the DWQ and be installed before any existing BMP is removed.
b. All buffer widths shall be measured from top of bank on both sides of all streams. Please show the top
of bank along all streams on plans along with both Zones (1 & 2) of riparian buffer.
c. Please site and design level spreaders in accordance with the current North Carolina Storrrtwater Best
Management Practices Design Manual available at httR:://h2o.enr.state.ne.us/su/bmp forlrts.htm.
Please pay particular attention to the following items:
Nose Carolina
401 Oversight I Express Review Permitting Unit ~hltYl~~lf
1650 Mail Service Center, Raleigh, North Carolina 27699-1650
2321 Crebtree Boulevard, Suite 250, Raleigh, North Carolina 27604
Phone: [phone] FAX [phone] Internet: httn://h2o.enr.state.nc.us/ncwetlands

i. Locating devices to follow existing contours.
ii. Avoiding steep slopes (Maximum 8% for grass filter strip and 6% for forest filter strip).
Slopes were measured to range between 16% and 20%.
iii. Avoiding draws down slope of level spreaders.
iv. Level spreaders shall be designed for 1 "/hr storm with bypass for the 10-yr storm or for the
10-yr storm without bypass.
v. Maximum length for any level spreader shall be 136 ft.
d. Please delineate the drainage areas to the level spreaders, indicating amount of impervious area for
each drainage area, and submit design flow calculations for the 1 "/hr and 10-yr storm.
e. Bypass structures shall be directed away from the level spreaders.
£ Please reconcile the level spreader table shown on plan sheet C703 and that in the main application
document. In addition, some level spreaders are not shown on the plans. These include those with end
sections FES 9, 21, 27, 33, 58, 64 and 68.
g. Please submit a level spreader supplement form for each level spreader, including the Design
Summary and Required Items Checklist along with all requested items.
h. Please submit one original and two copies of a notarized Inspection and Maintenance Agreement
Form for the proposed level spreaders.
i. If level spreaders are designed to receive flow froth any BMP, please indicate BMP types and
locations, and include BMP outflow calculations.
j. Please see Option 2 of the Stormwater Management for Buffer Rules Section of the PCN
Addendum and also Section 8.3.6 of the NC BMP Manual (page 8-8) for guidance on other BMP
options where level spreaders are not appropriate.
k. Please include velocity dissipator design sheets.
lease respond within five (5) days of the date of this letter by sending three (3) copies of this information. The
Express Review Program is a process that requires all parties to participate in a timely manner.
This letter only addresses the application review and does not authorize any impacts to wetlands, waters or protected
buffers. Please contact Lia Myott at [phone] if you have any questions.
Sincerely,
0~
Cyndi Karoly, Supervisor
401/Express Review Oversite Unit
CBK/lem
cc: DWQ Raleigh Regional Office
USAGE Raleigh Field Office
Central Files
File copy
Mr. John E. Schrum, Horvath Associates P.A., 16 Consultant Place, Suite 201, Durham, NC 27707
•

~QF wA rFgQ Michael F Easley, Governor a ~ 1'3
\Q G William G. Ross Jr., Secretary ~GE Nom!
Cp ~ North Carolina Department of Em-ironment and Natural Resources
p .~ Coleen H. Sullins, Director
. Division of Water Quality
January 9, 2008
DWQ EXP No. 07-2022
Durham County
CERTIFIED MAIL: RETURN RECEIPT REQUESTED
East Durham Development Company, LLC
Attn: Mr. Michael Whitehead
201 Shannon Oaks Circle
Raleigh, NC 27511
Subject Property: Sierra Residential Subdivision
NOTICE OF WITHDRAWAL-EXPRESS REVIEW PROGRAM
Dear Mr. Whitehead:
On December 19, 2007, the Division of Water Quality (DWQ) received your PCN application for the
above-referenced project. On December 21, 2007, DWQ requested additional information. On January
3, 2008, a meeting was conducted to clarify additional information requests. As a result of issues
discussed in the January meeting, it has been determined that Sierra Residential Subdivision is not an
appropriate candidate for the Express Review Program, and therefore we are withdrawing your permit
application from the Express Review Program.
The Sierra Residential Subdivision project is being transferred to the Regular 401 review program, with
no additional cost to you. Ian McMillan and Annette Lucas will be generating a Request for More
Information letter for the project. One item that will be included in the letter is a request to see designs
for all of the diffuse flow measures for the entire project, since many areas are too steep for level
spreaders.. If appropriate level spreader sites are not available on the site, then a BMP that removes 30
percent of total nitrogen will need to be provided in its place. Enough space must be allocated on the site
in order to allow for these BMPs when needed.
Please be aware that you have no authorization under Section 401 of the Clear Water Act for this activity
and any work done within waters of the state would be a violation of North Carolina General Statutes and
Administrative Code.
Please contact Joseph Gyamfi at [phone], Lia Myott at [phone], or Cyndi Karoly at (919)
733-9721 if you have any questions regarding or would like to set up a meeting to discuss this matter.
Sincerely,
r ~ /~
Cyndi Karoly, Supervisor
401 OversightlExpress Review Permitting Unit
CBK/lem/jg
~1 Oversight /Express Review Permitting UnK
1650 Mail Service Center, Raleigh, North Carolina 27695=1650
2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604
Phone: [phone] !FAX [phone] Internet httt~://h2o.enr.state. nc.us/ncwetlands
I~hCaro 'na
~atura~y
An Equal Opportunity/Affirmative Action Empbyer- 50~° Recycled110% Post Consumer Paper

0713 Velocity Dissipator Design John E. Schrum, P.E.
Atlas Culvert 1 1 /20/2007
• Velocity Dissipator Calculations w/ PIPES.EXE
NRCD Land Quality Section -Pipe Design
Entering the following values will provide you with the expected outlet
velocity and depth of flow in a pipe, assuming the Mannings roughness
number is constant over the entire length of the pipe.
10-Year Outflow, Q (cfs) = 680.21 Flow Depth (ft.) 6.48
Slope, S (~) = 0.13 Velocity, V (ft/s) 8.82
Pipe Dia., D (in.) = 135.3
Mannings nValue = 0.013
NRCD Land Quality Section
NYDOT Dissipator Design Results
Pipe Dia., Do (ft.) = 11.28
Outlet Velocity, Vo (fps) = g.g2
Apron Length, LA (ft.) = 45.1 ZONE 4
Average Dia.
(inches)
•

Width,W =
Width, W =
SAY:
FINAL DIMENSIONS:
4
8
10
14
LA+Do
56.4
57.0
Stone Thickness
Class (inches)
A 12
B 18
1 24
2 36
Thickness = 1.5 * DMAX
ft.
ft.

Length, L (ft.) = 45.1
Width, W (ft.) = 57.0
Depth, D (in.) = 24 (NCDENR Erosion 8. Sed. Cont. Manual §8.06.6)
Stone Class = 1 (NCDOT Std. § 1042)
•
*Cells in red denote required inputs from PIPES.exe outputs
**Velocity from Culvert Summary Table
Do = x *2*1.25 =11.28'
~z

0713 Velocity Dissipator Design John E. Schrum, P.E.
Athena Culvert 1 1 /20/2007
• Velocity Dissipator Calculations w/ PIPES.EXE
NRCD Land Quality Section -Pipe Design
Entering the following valves will provide you with the expected outlet
velocity and depth of flow in a pipe, assuming the Mannings roughness
number is constant over the entire length of the pipe.
10-Year Outflow, Q (cfs) = 70.73 Flow Depth (ft.) 1.98
Slope, S (~o) = 1.00 Velocity, V (ft/s) 11.40
Pipe Dia., D (in.) = 48
Mannings nValue = 0.013
NRCD Land Quality Section
NYDOT Dissipator Design Results
Pipe Dia., Do (ft.) = 4.00
Outlet Velocity, Vo (fps) = 11.40
Apron Length, LA (ft.) = 32.0 ZONE 3
•
Average Dia. Stone Thickness
(inches) Class (inches)
4 A 12
8 B 18
» 10 1 24
14 2 36
Width,W = LA + Do Thickness = 1.5 * DMAx
Width, W = 36.0 ft.
SAY: 36.0 ft.
FINAL DIMENSIONS:

Length, L (ft.) = 32.0
Width, W (ft.) = 36.0
Depth, D (in.) = 24 (NCDENR Erosion & Sed. Cont. Manual §8.06.6)
Stone Class = 1 (NCDOT Std. §1042)
*Cells in red denote required inputs from PIPES.exe outputs
•