20072022 Ver 2_More Info Received_20080529

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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? Shop drawings [I Plans El Specifications El

COPIES DATE NO. DESCRIPTION
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THESES J E TRANSMITTED as checked below:
? For approval El For your use El As requested ? For review and comment
MAY 2 9 2008
REMARKS TY
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COPY TO
SIGNED 41 jz'
If enclosures are not as noted, kindly n ify us at once.
DATE JOB NO.0 1
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HORVATH
ASSOCIATES
CIVIL ENGINEERS PLANNERS LANDSCAPE ARCHITECTS
Sierra
Pre-Construction Notification
ADDENDUM
May 29, 2008
Job 0713
MAY 2 9 2008
DENR VNISEk 1111A ER BRPJ?N
7 IOS AND S7 p
North Carolina Tennessee
16 Consultant Place, Suite 201 537 Market Street Suite LL20
Durham, NC 27707 Chattanooga, TN 37402
p 919.490.4990 / f 919.490.8953 p 423.266.4990 / f 423.266.5700
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SIERRA
PRE-CONSTRUCTION NOTIFICATION
SECTION 4011404 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
ADDENDUM May 29, 2008
Revised March 19, 2008
Revised May 9, 2008
Prepared for: MacGregor Development Company
201 Shannon Oaks Circle, Suite 201
Cary, North Carolina 27511
[phone]
Prepared by: Horvath Associates, P.A.
Engineers - Planners - Landscape Architects
P.O. Box 51806
Durham, North Carolina 27717
[phone]

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Office Use Only: Form Version March 05
USACE Action ID No. DWQ No. ao a a \( 2.
(If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A".)
1. Processing
1. Check all of the approval(s) requested for this project:
? Section 404 Permit ? Riparian or Watershed Buffer Rules
? Section 10 Permit ? Isolated Wetland Permit from DWQ
® 401 Water Quality Certification ? Express 401 Water Quality Certification
2. Nationwide, Regional or General Permit Number(s) Requested: 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: ?
(n??/]
II. Applicant Information U, 11 ?'J R
1. Owner/Applicant Information MAY 2 9 2008
Name: Jerry Radman
1 Mailing Address: East Durham Land Company, LLC ;O AN AAAN STrOR INCH
201 Shannon Oaks Circle
Raleigh, NC 27511
Telephone Number: [phone] Fax Number: [phone]
1 E-mail Address:
2. Agent/Consultant Information (A signed and dated copy of the Agent Authorization letter
must be attached if the Agent has signatory authority for the owner/applicant.)
Name: John E. Schrum, PE
Company Affiliation: Horvath Associates, P.A.
Mailing Address: 16 Consultant Place, Suite 201
Durham NC 27707
Telephone Number: [phone] Fax Number: [phone]
E-mail Address: john.schrumghorvathassociates.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 11 by 17-inch format;
1 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: Sierra
2. T.I.P. Project Number or State Project Number (NCDOT Only): n/a
3. Property Identification Number (Tax PIN): (see attached vicinity map 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 4%
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.
5. Site coordinates (For linear projects, such as a road or utility line,
separately lists the coordinates for each crossing of a distinct waterbody.)
Decimal Degrees (6 digits minimum): 35.947903 ON 7?
attach a sheet that
789466 °W
6. Property size (acres): 422.60 acres
7. Name of nearest receiving body of water: Lick Creek (27-1141.5)) (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 http:A/h2o.enr.state.nc.us/admin/mapsd.)
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
surrounding area is primarily rural and suburban residential development.
Updated 11/1/2005
Page 6of13

10. Describe the overall project in detail, including the type of equipment to be used: The
overall project will consist of 369 single-family homes and 130 multi-family townhomes.
Equipment consistent with grading, earthmoving 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 growing
region of eastern Durham
IV. Prior Project History
If jurisdictional determinations and/or permits have been requested and/or obtained for this
1 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. 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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Updated 11/1/2005
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1. Provide a written description of the proposed impacts: The proposed impacts include
two road crossings with culverts six 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. Mitigation
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
Flood Bain
(es/no) Distance to
Nearest
Stream
(linear feet) Area of
Impact
(acres)
8A Temporary Sanitary
Sewer Forested Yes 0 0.06
9A Temporary Sanitary
Sewer Forested Yes 0 0.214

Total Wetland Impact (acres) 0.274
1 3. List the total acreage (estimated) of all existing wetlands on the property: 20.47 acres
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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 v
Type of Impact Perennial or
Intermittent? Average
Stream Width
Before Impact Impact
Length
(linear feet) Area of
Impact
(acres)
IA Earthquake Creek Road Crossing Perennial 2.5 ft 137 0.008
4C Earthquake Creek Road Crossing Perennial 4.1 ft 158 0.014
4D Earthquake Creek Temporary Erosion Perennial 3.2 ft 66* 0.064

Total Stream Impact (by length and acreage) 361* 0.086*
*Note: Temporary erosion control stream impacts included in totals on this page, but not in cumulative impacts.
Updated 11/1/2005
Page 8of13

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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 exrrnvntinn_ dredging- flooding. drainage, 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) 0.0
Stream Impact (acres): 0.022
Wetland Impact (acres): 0.274
Open Water Impact (acres): 0.0
Total Impact to Waters of the U.S. (acres) 0.0
Total Stream Impact (linear feet): 295
List the cumulative impact to all Waters of the U.S. resulting from the project:
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.
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-year 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.
Updated 11/1/2005
Page 9 of 13

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
1 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 r_prap 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.
USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide
' Permits, published in the Federal Register on January 15, 2002, mitigation will be required when
necessary to ensure that adverse effects to the aquatic environment are minimal. Factors
including size and type of proposed impact and function and relative value of the impacted
aquatic resource will be considered in determining acceptability of appropriate and practicable
mitigation as proposed. Examples of mitigation that may be appropriate and practicable include,
' but are not limited to: reducing the size of the project; establishing and maintaining wetland
and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of
aquatic resource functions and values by creating, restoring, enhancing, or preserving similar
functions and values, preferable in the same watershed.
If mitigation is required for this project, a copy of the mitigation plan must be attached in order
' for USACE or DWQ to consider the application complete for processing. Any application
lacking a required mitigation plan or NCEEP concurrence shall be placed on hold as incomplete.
An applicant may also choose to review the current guidelines for stream restoration in DWQ's
' Draft Technical Guide for Stream Work in North Carolina (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

1 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://vAw"r.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): 295 LF
Amount of buffer mitigation requested (square feet): 7,831 SF
Amount of Riparian wetland mitigation requested (acres): 0 acres
Amount of Non-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
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.
Updated 11/1/2005
Page 11 of 13

1. Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233
(Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 02B .0243 (Catawba) 15A NCAC
' 2B .0250 (Randleman Rules and Water Supply Buffer Requirements), or other (please
identify )? Yes ® No ?
' 2. If "yes", identify the square feet and acreage of impact to each zone of the riparian buffers.
If buffer mitigation is required calculate the required amount of mitigation by applying the
buffer multipliers.
u
1
Zone* Impact
(square feet) Multiplier Required
Mitigation
1 7,831 3 (2 for Catawba) 23,493
2 0 1.5 0
Total 7,831 23,493
* 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.
NOTE: Only buffer impacts that require mitigation are included in the table above. Impacts which require
mitigation are from utility lines parallel to the stream, that encroach on Zone 1 Neuse buffers. All Zone 1 and
Zone 2 Neuse buffer impacts, whether they require mitigation or not, can be found on the Impact Summary
sheets.

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 proposed (see attached). Mitigation includes impacts
from utility lines ines parallel to the stream that encroach on Zone 1 Neuse 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 post-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
svstem and treated.
Updated 11/1/2005
' Page 12 of 13

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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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
htip://h2o.enr.state.nc.us/ncwetlands. If no, please provide a short narrative description: The
project will include future phases 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).
Z
Applic#nt/Agent's Signature // DAte
(Agent's sign re is valid only if an authorization letter from the applicant is provided.)
Updated 11/1/2005
Page 13 of 13

LE(
AC or SF
PDR 3.0 CH:
RESIDENTIAL NB:
VACANT WL:
NEUSE RIVER (F-J/B) Z1:
Z2:
SEND
STREAM CHANNEL
NEUSE RIVER BASIN BUFFER
WETLAND
ZONE 1 (30' FROM TOP OF BANK)
ZONE 2 (20' FROM ZONE 1)
PROJECT COVER SHEET
Sierra Drwn By: JC
Leesville & Doc Nichols R Chk B : JR
Date: 11/21/07
Durham, North Carolina Scale: 1"= N/A
Proj #
0713
)wg No
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PIN: 0860-03-33-3314 PID: 1933441
PIN: 0860-01-20-8767 PID: 193361

SIERRA PIN: 0769-01-28-5772

PIN: 0769-01-27-6679 PID: 193301

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
EAST DURHAM LAND COMPANY, LLC TOTAL LAND AREA:
MIKE WHITEHEAD ZONING:
CARY, NC PROPOSED USE:
[phone] EXISTING USE:
RIVER BASIN:
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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I , , l ? ? r?? l' r >;rh?J r v ?? yc
` I y 3i r N
Y f+s' r I ;! ) 1 I { 'c \ I. `\ 7t V '' L ,???.?\ -C.%rr '•f -,l? \l, W (I\
Z775 _5 0
1 , + FX'Y r . 1 .Hy ?.?: i d `? r 1, r r .: tll/I'll ' ? \ rI I ;
? 1 r \ f
J ? ; w " l ? ? 5 ? r _--, ? i/,•,rr?. rl. ? sv ? / r,J l?`I ..? {? 1 l 1.... • ?? ?????r?_
? A2
:.......... .
\ '' 1 / \ t 17 '' \ W„`'^f" All
it
L II
/f
4
1 ti"
¦
M = w m w m = = = m m r m m r= = =
Y
r'-7?
/? .??o? ° o' Pusuc SANITARY
,r? l /• "` / i ? ? ? SEWER EASEMENT' s
i`?,F?-???
MRACT-
"QR:RRQEILE-^ AREA #;A'"
30'.P -SAN j n ! \? r
EASE / f \\ f \\r ,! i f
Y????•? f ` rf _ ? } 1 ? t
01

if
r
I WK C
1
1
IL
SEE 'S 5 ,Z r
FOR OFIL r j
ea5t0e?Fe ` it\\ DBE # I
%
f
--8
IMPACT
NO. TYPE SQ. FT.
(CH and WL) LINEAR FT.
CH ONLY
1
Buffer &
NB Z1
2,361
----
Stream Z2 2,021 ----
(Sanitary
Sewer) TOTAL .4,382
1A NB Z1 8,411 137'
Buffer & Z2 4,360 ----
Stream
(Culvert) TOTAL 12,771
NOTE: ALL PERENNIAL SS CROSSINGS SHALL
JACK AND
BE
BORE'
NOTE: BYPASS DISHARGES INTO UNBUFFERED IMPACT MAP #I Proj #
STREAM. 0713
Sierra Drwn By: JC Dwg No
Leesville & Doc Nichols R Chk B : JR 3
Durham, North Carolina Date: 11/21/07 3 of
Scale: 11 100
1
1
1
1
1
1
1
t
1
i
1
1
1
1
4' HIGH PVC COATED
CHAIN LINK FNECE
(FOREST GREEN OR BLACK)
39C
38C
37C
36(
DATUM ELEV
350.00
IIGH PVC COATED
AIN LINK FNECE
,REST GREEN OR BLACK)
50 RCP CULVERT
(1' BURY)
EXISTING GRADE
CENTERLINE
S2'1- X 17'W X 24!'D PLUNGE
'OOL VELOCITY DISSIPATOR
INED WITH CLASS'1' RIPRAP
1 CULVERT PROFILE
4 SCALE: 1"=60'
IMPACT PROFILE
Sierra Drwn By: JC
Leesville & Doc Nichols R Chk B : JR
Date: 11/21/07
Durham, North Carolina Scale: 1"- 60'
Proj #
0713
Dwg No
4
4 of
i
i 'i
- -
0 1
0
Z
P ^

N y?O 7. •- b y V' m
nl O ()?y NNE < NQ ON
+ P C7? Z NPN?p = ?N ???-~
?OO?ZQ W p?pPZ Z Q nn?ZZ Q?
.- ..-. t`7 - _ f?7 _
U
1 i

1
-? EXISTING GRAD
50' LEFT OF CENT ERLINE

i
I

1 EXISTING GRAD
NTERLIN E
C
E
? ^ I

??

1 1
1
/ EXISTING GRAD
? _ RIGHT OF CE( JTEP,LINE
? /
i ? '

1
1
-
a
w

z
,
ITT PVC I I '
' 7 5LF@0.U'
II 67LF@ 1.01
12" 0 PVC 240 L .20%
18"o PVC
0
1 U u
' i SANIT RY SEWER ROFILE
S SCALE 1"=50'
'
Pro
#
HORVATH ASSOCIATES, P.A. IMPACT PROFILE
0713
1 16 CONSULTANT PLACE, SUITE 201
NORTH CAROLINA 27707
DURHAM Sierra Drwn By: JC Dwg No
,
P 919.490.4990 F 919.490.8953
Leesville & Doc Nichols Rd Chk By: JR 5
pate: 11?21io7
1 1/
' www.horvathassociates.com Durham, North Carolina Scale: 1 3 of

,
/ I
,
l l 1 /
?''t ?r /? ?• ,f / / _ r /? / /
/
1 /rJ / ' f 1 J
1
r
\ 11
_ r
w
1 _
!I ?. IMPACT
N X`
4
-NDVT
,, ? ? ? v_ to a ?,2FG ? -- . , • , t t
'T ti._-?,. •% 30'PUBLIC SANITARY j '
' !? I? t l -- `??o _ •!•i• `SEWER EAS7ENT.
? ?? ? lr "? ?-- ?,. " ONES • ? %?. ' ? ? ,?%• ? ,, ? ? / ,? / / J ? t
f
r
MPACT
• . MEND, , RE/rJ 2A
?D?B/?'
IMPACT TYPE SQ. FT. LINEAR FT.
NO. (CH and WL) CH ONLY
2
NB
Buffer Z1 4,526 ----
Only Z2 16,435 ----
(Sa it

Seww
r
e

TOTAL

20,961
2
NB
Buffer Z1 837 ----
Only Z2 100 ----
(16 Bypass
Channel)
TOTAL
937
2
NB
Buffer Z1 681 ----
Only Z2 289 ----
2 Bypass
Channel)
TOTAL
970
2

Buffer

Z1
NB

768

----
Only Z2 490 ----
7 Bypass
Channel
NB
Buffer & Z1 2,164 ----
Stream Z2 604
(Sanitary
Sewer) TOTAL 2,768
IMPACT MAP #2 Proj #
0713
' Sierra Drwn By: JC Dwg No
Leesville & Doc Nichols R Chk B : JR 6
Date: 11/21/07
Durham, North Carolina Scale: 1"- 100' 3 of
W
i
r
37C

- 360

350

?I o
?1SANITARY SEWER PROFILE
7 /SCALE 1"=ff
O
O
1
OOf`) Y
O
? D
+ ^
Jo c^0 0
<2 > 2
Z
.i
0
ae

r
.

OQ4

DATUM ELEV
345.01
0

M 1
0
C-4
Cl)
0
co
0
m
=' 10+00
10+50 11+00
P
ti
S S
Z ? N
V O ^ CO
+ N M M ?
-?ZZO
¢f » >
nF? ZZZ
EXISTING GRADE
25' LEFT OF CENTERLINE
EXISTING GRADE
CENTERLINE
EXISTING GRADE
25' RIGHT OF CENTERLINE
?
HORVATH ASSOCIATES, P.A. IMPACT PROFILE Proj #
16 CONSULTANT PLACE, SUITE 201 0713
Drwn By: JC Dwg No
w DURHAM, NORTH CAROLINA 27707 Sierra
P 919.490.4990 F 919.490.8953 Leesville & Doc Nichols R Chk By: JR 7
Date: 11/21/07
www.horvathassociates.com Durham, North Carolina Scale: 1"= 50' 3 Of
1
1
1
1
1
1
11
XISTING GRADE
5' LEFT OF CENTERLINE
EXISTING GRADE
CENTERLINE
EXISTING GRADE
25RIGHT OF CENTERLINE
DATUM ELEV
Cl) co co
10+00 10+50
' 1 SANITARY SEWER PROFILE
9 SCALE V" 50'
HORVATH ASSOCIATES, P.A.
' 16 CONSULTANT PLACE, SUITE 201
DURHAM, NORTH CAROLINA 27707
P 919.490.4990 F 919.490.8953
' www.horvathassociates.com

EXISTII
25' LEI
360
EXISTII
CENT'
EXISTI
25' RI,
350
340
DATUM ELEV
335.00
c
c

+ N ?
O M 0 N
Q > 2
r -
GRADE
OF CENTERLINE
1 GRADE
LINE
6-6 R-A
HT OF CENTERLINE i
I ?

F ?

z ?
w U
> d
NO p
U z

/ 105 LF @
I ? /8"O DIP

?
> M v °
M M h
M ?
N
h
M
Y ? P z
w OG+,
? V 7
O tr1 M
± Z Z O
Q?> > >
N?7=7
10+00 10+50 11+00
2 SANITARY SEWER PROFILE
9 SCALE V" 50'
IMPACT PROFILES Proj #
0713
Sierra Drwn By:_JC Dwg No
Leesville & Doc Nichols R chk By: JR 9
Date: 11/21/07
Durham, North Carolina Scale: 1 "- 50' 3 of

rf X

iD.

11.

/ f !
fJ '?
Jfld

j
,xrt?
NITARY SEWERS-INSTALLED- / ,
C -PERENNIAL-STR(,AMS WILL `SEE SHT 11?
INSTALLED-USING'THE%JACK,, - ? FOR PROFILE
BORE'`METHOD TO--AVOID/
' aY
MIMPACTS- -
-AREA'#4--
f :
'
'Ole,
,/
,SEE°.,.SHM- _ >?.?- •, ?f'` J'_ f' ??? A Zak ~"Y s???f
i
f w
/ifs ?- f t A &A
i.
/ o)\1E 0 Pt1 CSANR
\ ER SEMENT a
i
f
mm J,'.i

1
i i
1 -' Wj
=EE SHT 12

1 FO,R PRONLE ' - --?,
NO. (CH and WL) CH ONLY
-- ? ? / , S/E?7 ER Ef/
A .?" T
V\ 'i
\ Ili
Al'
40

li"'/
, el
r '
IMPACT TYPE SO. FT. LINEAR FT.

4

Buffer &

Z1
NB

4,187
Stream Z2 2,088
Sanitary
ewer)
TOTAL
6,275 _ _ _ _
4A
NB
Buffer Z1 149 ----
Only
(Sanitary
Z2
5,885
- - - -
Sewer) TOTAL 6,034
4A

Buffer
NB
Z1

750

----
Only
(8A Bypass Z2 590 ----
Channel) TOTAL 1,340
Buffer & NB Z1 2,180 ----
Stream Z2 2,045 ----
Sanitary
ewer) TOTAL 4,225
46
NB
Buffer Z1 731 ----
Only Z2 1,052 ----
(9 Bypass
Channel) TOTAL 1,783
Buffer & NB Z1 10,603 158'
Stream Z2 6,444 ----
(Culvert) TOTAL 17,047
IMPACT MAP #4 Proj #
0713
Sierra Drwn By: JC Dwg No
Leesville & Doc Nichols R Chk B : JR 10
Date: 11/21/07
Durham, North Carolina Scale: 1 "- 50' 3 of

i k
I It

? ?r

f

?> ow
ZX
'0

139 LF 0.20% 1 18"0 DIP F95
LF @ 0.20%
18110 PVC
1
137 LF @ 0.20%1 I
18"0 DI
?

1
t
o

N
N M M
M M
M M
' M

h
P
O
M M
M co
O
S
? M? O
¢?»
InK Z?
M
2

? h Z
M-o
Z Z
N
2
'
AM
¢a
- M O
0
»
2 h z z
t
1 SA NITARY SEWE R PROFILE
' 11 SCAB V=5a

O
h
<
M O V'
a N
< 7
M co N O0
O
7' 7
Cl) M T
O
?7
Cl) O
7

Cl) a
P
7
Cl) O
N
'd'
M O
O. M
'Q h
M M
u7

M v'i
M

M ?Y O
h
h
Cl) M
' 36 -00 36 +50 37 +00 37 50 38 00 38 150 39 +00 39 +50
Proj #
HORVATH ASSOCIATES, P.A. IMPACT PROFILE
0713
' 16 CONSULTANT PLACE, SUITE 201
Sierra Drwn By: JC Dwg No
DURHAM, NORTH CAROLINA 27707
P 919.490.4990 F 919.490.8953 Leesville & Doc Nichols Rd Chk B : JR 11
11/21/07
Date:
t www.horvathassociates.corvi Durham, North Carolina Scale: 1"= 50' 3 of

=?o
1N
]C] ?
Z O
7Z
'_ZZ
XISTING GRADE
5' LEFT OF CENTERLINE
EXISTING GRADE
CENTERLINE
EXISTING GRADE
25' RIGHT OF CENTERLINE
I
340
330 330. C 0
07 SANITARY SEWER PROFILE
2 SCALE V'=50'
10+00 10+50
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 Rd Chk B : JR 12
Date: 11/21/07
www.horvathassociates.com Durham, North Carolina Scale: -1"=50' 3 of

- -FINISHED'
4' HIGH F?C COATC U
CHAIN LINI( FENCE
FOREST GREEN OR BLACK)

RADE ?

HEAE
3
3
3
DATUM ELE
320.00
10+00 10+50
HORVATH ASSOCIATES, P.A.
' 16 CONSULTANT PLACE, SUITE 201
DURHAM, NORTH CAROLINA 27707
P 919.490.4990 F 919.490.8953
www.horvathassociates.com

a ?
O 4' HIGH PV
z CHAIN LI?
it
FOREST G'I
IVI LL z
U
HEADWA

?0 I V

0

/ TWIN 8'X8'
CONCRETE BO X
CULVERT

M
DIS
EXI
\ EXI
\
1 /
01

0
r
IL

INV OUT= INV O T=326.39
326.52

INV OUT = INV OUT =
325.52 325.39
RIGHT BOX CULVER
TO BE BURIED (1')
UNDERGROUND
o

co

co '7
N M

co o
co 0
co
c') 0
co
co 0
co
n
COATED
FENCE
!EEN OR BLACI:j
L
CH VE
IPATOR
-ING GI
?- 45'Lx3AIIWX Z CD PLUNGE
POOL VELOCITY DISSIPATOR
NCDOT CLASS T RIPRAP
M CULVERT PROFILE
I3 SCALE P'=5D'
11+00 11+50
Proj #
IMPACT PROFILE
0713
Sierra Drwn By: JC Dwg No
Leesville & Doc Nichols R Chk B JR 13
Date: 11/21/07
Durham, North Carolina Scale: 1"= 50' 3 of
y? F
?. 0 PUBLIC:SA? R.Y_._...- Z
! I.
WERfA5EMENT If
r?

IMPACT

tea. f ? ?'. ? O??' ?4?' / / / / ` •`l ., ? 1
,AREA #5,A
EE T 1H 5
{
W r
FOR PROFILE
IT'S
i_
IN'
SEE SHT`l b, I S ???
OSP
' 1 ',,FOR PROFILE
z?
v - - _ ?? 1v DB #b,_ LONE
y+??-+?1 f ?1• (?,°' i , / I
-IIMPAC
~- ---?- -----AREA ZON
SANITAR .SEWERS INST LLE6 UNDER \y 1 ?'?
PERENN AL-STRI E W Z_ I INSTALLED
30' PUBLIG SA NITAR.
-USINP TH ?'.?ACK --AIKIA ARE?, IETHQD T?E -SEWEREASEM .? -I
A-VOJDISIREAMJMP S,
IMPACT TYPE
NO.
4C NB
f- Buffer & Z1
Stream Z2
(Culvert) TOTAL
5
Buffer NB Z1
Only
r `J ?/ 1 (S nitary Z2
/ J °'r•\_` r? l J Sewer) TOTAL
Buffer NB Z1
Only
(86 Bypas z2
s
3 l ? /?/ ?! //f, ? Channel) TOTAL
Buffer NB Z1
Only
/ (6 Bypass Z2
Channel) TOTAL
5A NB
,/ Buffer & Z1
ll 1 \ L i T . ?l !'"\-.. (SStrreatmary Z2
' Sewer) TOTAL
#4C r'; Illfll FV I t
SQ. FT. LINEAR FT.
(CH and WL) CH ONLY'
10,603 158'
6,444 ----
17,047
419 ----
3,462 ----
3,881
686
1,060
1,746
648 ----
410 ----
1,058
4,255 ----
13,248 ----
17,503
IMPACT MAP #5
' Sierra
Leesville & Doc Nichols R
' Durham, North Carolina
Drwn By: JC
Chk By: JR
Date: 11/21/0
Scale: 1 "= 100'
Proj #
0713
Dwg No
14
3 of
n
HORVATH ASSOCIATES, P.A.
16 CONSULTANT PLACE, SUITE 201
DURHAM, NORTH CAROLINA 27707
P 919.490.4990 F 919.490.8953

' www.horvathcssociates.com
IMPACT PROFILE Proj #
0713
Sierra Drwn By: JC Dwg No
Leesville & Doc Nichols R Chk B : JR 15
Date: 11/21/07
Durham, North Carolina Scale: 1"- 50' 3 of
r
1
1
N --
V Y
2 2
N
M Cl)
N
N N M
M M ?
??O
» >
Z Z Z
EXISTING GRADE
25LEFT OF CENTERLINE
EXISTING GRADE
CENTERLINE
EXISTING GRADE
25' RIGHT OF CENTERLINE

32
10+00 10+50
1 SANITARY SEWER PROFILE
SCALE 1"=50'

1

1
horvathassociates
com
w
.
ww
.

HORVATH ASSOCIATES, P.A.
16 CONSULTANT PLACE, SUITE 201
DURHAM, NORTH CAROLINA 27707
P 919.490.4990 F 919.490.8953
Proj
IMPACT PROFILE 07 #
0713
Sierra Drwn By: JC Dwg No
at : JR ib
Chl By:
Leesville & Doc Nichols R D
Date: 11/21/07
Durham, North Carolina Scale: 1"= 50' 3 of
1
1
1 "`-SANITARY SE-WEBS INSTALLED UNDER'
-? PERENNIAL-STREAMS WILL BFINSTALL D , r / f t a? f ! ' I i
USING, I E'Ji4CIC AND BORE' METHOD TO ; i' r' f r? i , l j !l ?I
-AVOID STREAM,IM-PACTS
i?
104.
?30'PU3LIC SANRARY
EWER EASEMENT
\ ? ?? ? ?' i 9j, %? ? ? \ 8-a F --- _.. y ? f ,/ . FF'MG?? f dl ? ? ; r J! ?/f / /?! ?? (/? f ?, / ? 1 ? Yt 4
EE SHT j18+
f /// ' r Q` FOR PROFILE, \ \ -
..30' PUBLIC EASEMENT 7 - ~
SEWER EASEMENT
f
LLji LLJ ------
i, _
IMPACT y?
ARE #b 7
A
IMP,
ARE
li

d

IMPACT
NO. TYPE SQ. FT.
(CH and WL) LINEAR FT.
CH ONLY
5A NB Z1 ----
Buffer 4,255
Only Z2 13,248 ----
(Sanitary TOTAL 17,503
Sewer)
6
NB
Buffer Z1 2,215 ----
Only Z2 10,602 ----
(Sanitary TOTAL 12,817
Sewer
r'
VV \ ,
IMPACT MAP #6 Proj #
0713
Sierra Drwn By: JC Dwg No
Ni
h
l
R
ill
& D
L Chk B : J1 17
c
o
s
eesv
e
oc Date: 1
1/21
Durham, North Carolina
Scale: 1 "= 1000' ' 3 of

1

EX TING GRADE `
50 LEFT OF CENTERLINE ! `

/
EX TING GRADE
CE NTERLINE
r

?. ,-3 _
f `
' e EX TING GRADE
50" RIGHT OF CENTERLINE

DUCTILE IRON LOCK- NT
/ ® ? PIPE REQUIRED FORA
CROSSING - PER CITY L AERIEL
DURHAM
r
y STANDARDS
?
1 ? E '
2

1 6 LF 0.69% ' ?

' i
PJ PVc i
60 LF @ 0.20% k
?
a
I 53 L F)@ 0.20% 67
? °'a18°?IIl ' ?
-;?v`'e-Pk/C 18" PVC ?
1
k ? ,

a °
` n
`?
' ui REINF
I RCED CONCRETE
EE DETAIL v
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?- ?? ° ° o
N
^ i? o
,
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ER - S _
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p. nNZQ o ?N 0 a ZO °r?i?O `hoc)7O
2 Q _? > >
N w Z? c2c
< Q _?
h >
Z ==c
< Q
~ > >
- Z Z Q ? > >
N Z Z = Q ?_ > >
? N? Z Z
n P c0 U 7
57 50 58 00 58 50 O O
59 00
1 SANITARY SEWER PROFILE
18 SCALE f =so'
Proj #
HORVATH ASSOCIATES, P.A. IMPACT PROFILE
0713
16 CONSULTANT PLACE, SUITE 201
Sierra Drwn By: JC Dwg No
DURHAM, NORTH CAROLINA 27707
P 919.490.4990 F 919.490.8953 Leesville & Doc Nichols Rd Chk B : JR 18
Date: 11/21/
1 1/ 07
t www.horvathassociates.com Durham, North Carolina Scale: 1 3of
r / I
1'
v -AREA #7J.
IdSANITA
-30' PUBLIC SANI ARY\ \ I f I { 1
z -
.? ? ? ? ?; -• ..? -_ \ \/ i %f 7/--
- - .l?51 --? •? f ?' \` ` ? r / I AL _..-`??tl. ` - ? .? ? I ? ? ! '_1ritY-J ... \ ', `.\ ? \
------"? it ENE 1
ZON
3
i°n?. .-r- ZO ?'- rJZ ?LL ZONE1
rq ?_ _-ZONE 1 ` ?`` ? '-'emu ?^- ?_ _ _ _ _ _ _ _ _ ` _ _ --? _ \ .=.,-? n -m _ ` I! _ fpit)` ? . `O O • 1 ` I
ZONE2 ww ?'?"_'? ^a A _ ` - _ _ _ _ _ _ _ _ _ ?'Jr ?? ?'yF ?• \`? ?.c?.
_•--_ ?_--_ ` `_ \ \ gym.-----.- ZONE?-__
?pT`•y-,- ` _ - ... .? ... ?.?. Z x. W ZONEX
\ _ m 7LONE2
WETLANDS. 'A
-AREA #6
- n \ -•\ ? ., ``., I ., ._ i \ \ ,1 . Q ? ! ? ? ? ? ?. '-' i1 1 \ ,y ! ? ? (? ? id , / ? f?(NpI?yr?? \ ? !?.
-'`/ ff /r /
IMPACT
NO. TYPE SO. FT.
(CH and WL) LINEAR FT.
CH ONLY
6

Buffer
NB
Z1

2,215

----
Only Z2 10,602 ----
(Sanitary
Sewer) TOTAL 12,817
7

Buffer
NB
Z1

- - - -

----
Only Z2 1,960 ----
(Sanitary
ewer) TOTAL 1,960
(,f Fri//`f )/// /?/ l ?' r- `\ \`
It N-
IMPACT MAP #7 Proj #
0713
Sierra Drwn By: JC Dwg No
l
R
Ni
h
ill
& D
L Chk B : JR 19
c
o
s
eesv
e
oc Date: 11/21/07
Durham, North Carolina Scale: 1"=100' 3 of
n
\ ; 1.. Z; ,, ? ; ?? ? •- - fir'. -? : ? ; ? ,, ? , , ? ,, j / ; / ? ,? ?o

?
\ \ ^
? \
IMPACT'
e
\
? \
,
/ir
AREA48;/ 4?
...-
1

fill /I
0• UBLICSANRARV,,J(J
E ER EASEMENT ( 1 1? , ?••? ?^ \ r
? ? e`?? airy }. ? r
JA(
?. \ :\ ; \• ' ; \ ; \ \ 4)\ ZON??~1\\\_\\ `?\ ?30' UBLICC SANITARY
%/
?•. `, \` ?F'?(q t • \ \ "? _ \ f \ ` SEWER EASF,MEMF / ! / , ( \ \ \.
\ \t \\
?. \ otiF? IMPACT` a \
AREA' #7.. _?.
) / \i ; ? , I ? • \ ? 1 ? = ' / y\ z? rya ''? / ? \ QJ ,??' \ \\ ? ~ \' `\ ? \ -- -.? \ ?
/ f / J' ? _\1 . \\ - ,,,,? may'` ?, / ? ?.\` ?? / \ ?? _.• ?` °F `< \? \\ ?? ? \ ?\?.`. \r?`? - _? ?-? _=
1
1
i
1
1

IMPACT
NO. TYPE SO. FT.
(CH and WL) LINEAR FT.
CH ONLY
7 NB
Buffer Z1
- - - -
----
Only Z2 1,960 ----
(Sar
ewer)
SS
TOTAL
1,960
8 NB
Z1
Buffer - - - - ----
Only Z2 4,935 ----
(Sanitar TOTAL 4,935
SSewer

IMPACT MAP #8
Sierra Drwn By: JC
Leesville & Doc Nichols R Chk B : JR
Date: 11/21/07
Durham, North Carolina Scale: 111-100'
Proj #
0713
)wg No
20
3 of
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IMPACT TYPE S0. FT. LINEAR FT.
8
Buffer Z1 ---- ----
Only Z2 4,935 ----
(Sanitary
ewer) TOTAL 4,935
8A
WL
Wetlands 2,628
Only
(Sanitary
Sewer
gNos ?v \ v
IMPACT MAP #9 Proj #
0713
Sierra Drwn By: JC Dwg No
Leesville & Doc Nichols R Chk B : JR 21
Date: 11121107
Durham, North Carolina Scale: I"= "= 100, 3 of
1
1
1
1
1
1
1
1
1
1
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1

\ \ V,
\ \ PROPOSEDPN
\ ^ STATION \ \
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\?\ `' ?•? , ?\ • SEE?SHT 23 ' SANITARY SEWERS
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F'6 R` INSTALLED UNDER\
1 PN, } : 1\ • . .? PROFILE \ -` \\\
&AOF6 R \\ . \? : \' . : . \? } }ii PEIiE?6 IIAL?
STREAMS WILCBE ?. \
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IMPACT TYPE SO. FT. LINEAR FT.
NO. (CH and WL) CH ONLY
Buffer & NB Z1 1,819 ----
Stream Z2 1,210 ----
Sanitary
ewer) TOTAL 3,029
9A WL
Wetlands 9,328
(Sanitary
Sewer)

IMPACT MAP #10 Proj #
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

w -
- w > _
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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 r3*uu
SANITARY SEWER PROFILE
22 SCALE 1"=5Q
IMPACT PROFILE
Sierra Drwn By: JC
Leesville & Doc Nichols R Chk By: JR
Date: 11/21/07
Durham, North Carolina scale: I"= 50'
310
300
290
Proj #
0713
)wg No
22
3 of
1
1
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1
1
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IMPACT TYPE SQ. FT. LINEAR FT.
NO. (CH and WL) CH ONLY
11 NB
Buffer Z1 749 ----
Only Z2 1,912 ----
(Road
Fill) TOTAL 2,661
1/ 4)
-4 V,
1
IMPACT MAP #I I
Sierra Drwn By: JC
Leesville & Doc Nichols R Chk B : JR
Date: 11/21/07
Durham, North Carolina Scale: 1"=100'
Proj #
0713
)wg No
24
3 of
V / 'i A \\ ?-- ?r \\ -\ ( \ V ?'1
IMPACT
jAREA#,12
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ti ? 1

IMPACT TYPE SQ. FT. LINEAR FT.
NO. (CH and WL) CH ONLY
12 NB
Buffer Z1 - - - - ----
Only Z2 250 ----
(Road
Fill) TOTAL 250
IMPACT MAP # 12 Proj #
0713
Sierra Drwn By: JC Dwg No
Leesville & Doc Nichols R Chk B : JR 25
Date: 11 /21 /07 3 of
Durham, North Carolina Scale: 1"-100'
1
1
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IMPACT TYPE SO. FT. LINEAR FT.
NO. (CH and WL) CH ONLY
13 NB
Buffer Z1 679 ----
Only
(2B Bypass Z2 2,690 ----
Channel TOTAL 3,369
13 NB
Buffer Z1 812 ----
Only Z2 574 ----
(2C Bypass
Channel TOTAL 1,386
13 NB
Buffer Z1 696 ----
Only Z2 1
563 ----
(3 Bypass ,
Channel TOTAL 2,259

4
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IMPACT MAP # 13 Proj #
0713
Sierra Drwn By: MLJ Dwg No
Leesville & Doc Nichols R Chk B : JR 28
Date:
Durham, North Carolina 5'= 10
Scale: 1"= 100'
0713 Channel Analysis.xls
Cross Section
Channel Cross Section
, ? T
I?e?

/ 1
A
Matt Jones, El
5/28/2008
Channel ID A B C Channel Slope Channel Liner
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DB # 7 IN 2 2 2 1.0 5.0 Class B Riprap
DB # 7 OUT 3 0 1 10.0 30.0 Concrete
DB # 8A OUT 3 0 1 3.0 40.0 Concrete
DB # 8B OUT 2 2 2 3.0 12.0 Class I Riprap
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0713 Section 401 Impact Summary.xlsx
Overall Impact Summary
Wetland Impacts:
Total Wetland Impact:
11,956 I s q. ft
0.274 acres
Impact # Area Area
(sq. ft) (acres)
8A 2,628 0.060
9A 9,328 0.214
Stream Impacts:
Intermittent Perennial Total
NWP 29 Stream Impact: 0 295 295 linear feet
Bill Price
5/29/2008
Impact Stream Type of Perennial Impact Impact
# Name Impact or Comment Length (If) Area (sf)
Intermittent
1 A Earthquake Culvert Perennial W/ 137 346
Creek Dissi ator
4C Earthquake Culvert Perennial W/ 158 594
Creek Dissi ator
Buffer Impacts Requiring Mitigation:
Impact
# Type of
Impact Stream Zone 1 Impact
4,526 s q. feet
2 SS Parallel Intermittent 0.104 acres
834 s q. feet
3 SS Parallel Intermittent 0.019 acres
149 s q. feet
4A SS Parallel perennial 0.003 acres
419 s q. feet
5 SS Parallel perennial 0.010 acres
1,851 s q. feet
5A SS Parallel perennial 0.042 acres
52 s q. feet
6 SS Parallel perennial 0.001 acres
Total Zone 1 7,831 s q. feet
Impacts 0.180 acres
Note: The only stream impacts requiring mitigation are the ones
listed above

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0713 Section 401 Impact Summary.xlsx
Overall Impact Summary
Buffer Impacts:
rsa_ feett lacresl
Total Zone 1 Impacts:
Total Zone 2 Impacts:
Total Buffer Impacts:
58,407 1.341
89,283 2.050
147,690 3.390
Bill Price
5/29/2008
impact Zone 1 Impact Zone 2 m pact Total Im pact
- 2,361 s q. feet 2,021 s q. feet 4,382 s q. feet
1 0.054 acres 0.046 acres 0.101 acres
8,411 s q. feet 4,360 s q. feet 12,771 _ s q. feet
1 A 0.193 acres _
0.100 acres 0.293 acres
6,812 s q. feet 17,314 sq. feet 24,126 sq. feet
2 0.156 acres 0.397 acres 0.554 acres
2,164 sq. feet 604 s q. feet 2,768 sq. feet
2A 0.050 acres 0.014 acres 0.064 acres
3,016 sq. feet 5,392 sq. feet 8,408 _ s q. feet
3 0.069 acres 0.124 acres 0.193 acres
2,786 sq. feet 110 s q. feet 2,896 sq. feet
3A 0.064 acres 0.003 acres 0.066 acres
1,304 sq. feet 4,491 s q. feet 5,795 sq. feet
3B 0.030 acres 0.103 acres 0.133 acres
4,187 s q. feet 2,088 sq. feet 6,275 sq. feet
4 0.096 acres 0.048 acres 0.144 acres
899 s q. feet 6,475 sq. feet 7,374 s q. feet
4A 0.021 acres 0.149 acres 0.169 acres
2,911 s q. feet 3,097 _ s q. feet 6,008 s .feet
4B 0.067 acres 0.071 acres 0.138 acres
10,603 s q. feet 6,444 s q. feet 17,047 s q. feet
4C 0.243 acres 0.148 acres 0.391 acres
1,753 s q. feet 4,932 s q. feet 6,685 _ s q. feet
5 0.040 acres 0.113 acres 0.153 acres
4,255 s q. feet 13,248 s q. feet 17,503 s q. feet
5A 0.098 acres 0.304 acres 0.402 acres
2,215 s q. feet 10,602 s q. feet 12,817 _ s q. feet
6 0.051 acres 0.243 acres 0.294 acres
0 s q. feet 1,960 s q. feet 1,960 s q. feet
7 0.000 acres 0.045 acres 0.045 acres
0 s q. feet 4,935 s q. feet 4,935 _ s q. feet
8 0.000 acres 0.113 acres 0.113 acres
1,819 s q. feet 1,210 s q. feet 3,029 s q. feet
9 0.042 acres 0.028 acres 0.070 acres
2,661 s q. feet 0 s q. feet 2,661 _ s q. feet
11 0.061 acres 0.000 acres 0.061 acres
250 s q. feet 0 s q. feet 250 s q. feet
12 0.006 acres 0.000 acres 0.006 acres
2,187 s q. feet 4,827 _ s q. feet 7,014 s q. feet
13 0.050 acres 0.111 acres 0.161 acres

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0713 Section 401 Impact Summary.xlsx
List of Impacts
Impact
Area SF Zone Comment Stream
1 2361 1 ss perp intermittent
1 693 2 ss perp intermittent
1 1328 2 ss perp intermittent
1 68 S ss perp intermittent
1 A 8411 1 road cross perennial
1 A 2880 2 road cross perennial
1 A 1480 2 road cross perennial
1 A 1382 T EC&S temporary
1 A 346 S road cross perennial
2 1504 1 ss parallel intermittent
2 2597 1 ss parallel intermittent
2 425 I ss parallel intermittent
2 16435 2 ss parallel intermittent
2 837 1 Wetland 1 B Channel intermittent
2 100 2 Wetland 1 B Channel intermittent
2 768 1 Wetland 7 Channel intermittent
2 490 2 Wetland 7 Channel intermittent
2 681 1 Wetland 2 Channel intermittent
2 289 2 Wetland 2 Channel intermittent
2A 2164 1 ss perp intermittent
2A 604 2 ss perp intermittent
2A 82 S ss perp intermittent
3 834 1 ss parallel intermittent
3 5392 2 ss parallel intermittent
3 2182 1 ss perp intermittent
3 77 S ss perp intermittent
3A 2786 1 ss perp perennial
3A 110 2 ss perp perennial
3A 161 S ss perp perennial
36 3906 2 ss parallel perennial
313 644 1 Wetland 5 Channel perennial
36 404 2 Wetland 5 Channel perennial
313 660 1 Wetland 76 Channel perennial
3B 181 2 Wetland 76 Channel perennial
4 1899 1 ss perp intermittent
4 2288 1 ss perp perennial
4 978 2 ss perp perennial
4 1110 , 2 ss perp perennial
4 130 S ss perp perennial
4 63 S ss perp intermittent
4A 3447: 2 ss parallel perennial
4A 2438 2 ss parallel perennial
4A 750 1 Wetland 8A Channel perennial
4A 590 2 Wetland 8A Channel perennial
4A 149 1 ss parallel perennial
46 2180 1 ss perp intermittent
413 964 2 ss perp intermittent
413 1081 2 ss perp intermittent
413 71 S ss perp intermittent
46 731 1 Wetland 9 Channel intermittent
413 1052- 2 Wetland 9 Channel intermittent
4C 10603 1 road cross perennial
4C 3140 2 road cross perennial
Horvath Associates
5/29/2008
Impact LF Comment Stream
Area
1 A 137 road cross perennial
4C 158 road cross perennial
*Bold and italicized = mitigation required
Stream Summary Table
Intermittent 0 linear feet
Perennial 295 linear feet
Miiiaatinn Summarv Table
Zone 1 ft2 Zone 2 ft2
Impacts 7,831 0
Multiplier 3 1.5
Credits Needed 23,493 0
Credits Approved 87,060 14,948
Wetland Summary Table
11,956 square feet
Total Impacts 0.27 acres
Temporary Erosion Control Summary Table
t
t
l 2,767 square feet
To
a
Impac
s 0.064 acres

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0713 Section 401 Impact Summary.xlsx
List of Impacts
Impact
Area SIP Zone Comment Stream
4C 3304 2 road cross perennial
4C 594 S road cross perennial
4C 1385 T EC&S perennial
5 419 1 ss parallel perennial
5 625 2 ss parallel perennial
5 2837 2 ss parallel perennial
5 686 1 Wetland 8B Channel perennial
5 1060 2 Wetland 8B Channel perennial
5 648 1 Wetland 6 Channel perennial
5 410 2 Wetland 6 Channel perennial
5A 2404 1 ss perp perennial
5A 863 2 ss perp perennial
5A 139 S ss perp perennial
5A 6272 2 ss parallel perennial
5A 497 1 ss parallel perennial
SA 1162 1 ss parallel perennial
5A 3887 2 ss parallel perennial
5A 2226 2 ss parallel perennial
5A 192 1 ss parallel perennial
6 10602 2 ss parallel perennial
6 2163 1 ss perp intermittent
6 78 S ss perp intermittent
6 52 1 ss parallel intermittent
7 1960 2 ss parallel perennial
8 4935 2 ss parallel perennial
8A 2628 W ss parallel wetland
9 1819 1 ss perp perennial
Horvath Associates
5/29/2008