20120894 Ver 2_401 Application_20121212

I_l
JHobbs
December 21, 2012
Ms. Karen Higgins - Supervisor,
Wetlands, Buffers, Stormwater,
Compliance And Permitting Unit
NCDENR — Division of Water Quality
512 N. Salisbury Street Floor 9,
Raleigh, North Carolina 27601
RE: DWQ Project # 12 -0894
Buckhom- Mebane EDD Phase 2
Water and Sewer Improvements
Orange County, NC
HUA Project No.: OC1001.300
Ms. Higgins:
Upchurch Associates
engineering I planning 1 surveying
i s- ogq jk UX
On behalf of Orange County, please find enclosed five (5) copies of a revised Preconstruction
Notification Form with attachments, five (5) sets of revised plans (2 full size and 3 half size), Maps 1 and
2, and a check for the appropriate fee for the above referenced project. We are submitting these items
requesting a modification of an approved 401 Water Quality Certification and Authorization Certificate.
The modification is being requested because additional wetlands were identified throughout the project
area and an additional maintenance access width is needed (15' instead of 10') in riparian buffers to
accommodate maintenance vehicles. Proposed total impacts are listed in the PCN form and attachments.
A significant portion of the project has been redesigned to avoid or minimize impacts to wetlands. All
proposed wetland, stream, and buffer impacts have been noted on the revised plans. In addition, the
impact tables attached to the PCN form include sheet references and lat. / long. coordinates for each
proposed impact. Other changes to the project include the deletion of water line W -3 and shortening the
proposed line S -2. These lines were deleted for budgetary reasons and will not affect the projects ability
to provide the intended service for the foreseeable future.
All proposed wetland impacts will be the result of clearing and excavation for the water and sewer main
installation. All excavation in wetlands will be backfilled to existing grade and no wetlands will be lost as
a result of the project. Permanent impacts will result from conversion from forested to herbaceous
wetland.
On behalf of Orange County, we appreciate you review and assistance with this project. Please do not
hesitate to contact me if you have any questions or if you need additional information.
Sincerely, D]���
HOBBS, UPCHURCH & ASSOCIATES, P.A.
2 72012
12
Mark Lacy, P.E.
Enclosures:
T. 910.692.5616 1 F 910 692.7342 1 300 SW Broad Street I Southern Pines, NC 28387 l WWW.HOBBSUPCHURCH.COM
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Office Use Only:
Corps action ID no.
DWQ project no.
Form Version 1.3 Dec 10 2008
Pre - Construction Notification PCN Form
A. Applicant Information
1. Processing "` -'� --
1 a. Type(s) of approval sought from the
Corps:
`
®Section 404 Permit [3 Section 1QPemtit
1 b. Specify Nationwide Permit (NW P) number: 12 or General Permit (GP) number:
1c. Has the NWP or GP number been verified by the Corps?
® Yes ❑ No
Id. Type(s) of approval sought from the DWQ (check all that apply):
® 401 Water Quality Certification - Regular ® Non -404 Jurisdictional General Permit
❑ 401 Water Quality Certification - Express ® Riparian Buffer Authorization
1e. Is this notification solely for the record
because written approval is not required?
For the record only for DWQ 401
Certification:
❑ Yes ® No
For the record only for Corps Permit:
❑ Yes ® No
1f. Is payment into a mitigation bank or in -lieu fee program proposed for mitigation
of impacts? If so, attach the acceptance letter from mitigation bank or in -lieu
fee program.
® Yes ❑ No
1g. Is the project located in any of NC's twenty coastal counties. If yes, answer 1 h
below.
❑ Yes ® No
1h. Is the project located within a NC DCM Area of Environmental Concern (AEC)?
❑ Yes ® No
2. Project Information
2a. Name of project:
Buckhom- Mebane EDD Water and Sewer Improvements Phase 2
2b. County:
Orange
2c. Nearest municipality / town:
Mebane
2d. Subdivision name:
2e. NCDOT only, T.I.P. or state
project no:
3. Owner Information
3a. Name(s) on Recorded Deed:
Orange County
3b. Deed Book and Page No.
Project will be located on easements to be acquired by Orange County.
3c. Responsible Party (for LLC if
applicable):
3d. Street address:
131 W Margaret Lane
3e. City, state, zip:
Hillsborough, NC, 27278
199UEUVY
3f. Telephone no.:
919 - 245 -2300
3g. Fax no.:
919 - 6443004
DEL
3h. Email address:
Wetlands d, ►+�te� pmmt 1
Page I of 11
PCN Form - Version 1.3 December 10, 2008 Version

4. Applicant Information (if different from owner)
4a. Applicant is:
❑ Agent ❑ Other, specify:
4b. Name:
4c. Business name
(if applicable):
4d. Street address:
4e. City, state, zip:
4f. Telephone no.:
4g. Fax no.:
4h. Email address:
5. Agent/Consultant Information (if applicable)
5a. Name:
Mark Lacy
5b. Business name
(if applicable):
Hobbs, Upchurch & Associates
5c. Street address:
300 S.W. Broad Street
5d. City, state, zip:
Southern Pines, NC 28388
5e. Telephone no.:
910 -692 -5616
5f. Fax no.:
910 - 692 -7342
5g. Email address:
mlacy @hobbsupchurch.com
Page 2 of 11
PCN Form — Version 1.3 December 10, 2008 Version

B. Project Information and Prior Project History
1. Property Identification
1 a. Property identification no. (tax PIN or parcel ID):
N/A
Latitude: 36.077778 Longitude: - 79.225
1 b. Site coordinates (in decimal degrees):
(DD.DDDDDD) (- DD.DDDDDD)
1 c. Property size:
34 acres
2. Surface Waters
2a. Name of nearest body of water (stream, river, etc.) to
Haw Creek (Cape Fear) Sevenmile Creek (Neuse)
proposed project:
2b. Water Quality Classification of nearest receiving water:
WS -V NSW (Haw) WS -II HOW NSW (Sevenmile)
2c. River basin:
Cape Fear / Neuse
3. Project Description
3a. Describe the existing conditions on the site and the general land use in the vicinity of the project at the time of this
application:
Land use varies along the project route and includes DOT road right of way, agricultural land, and forested lands.
3b. List the total estimated acreage of all existing wetlands on the property:
The water and sewer has been aligned to avoid wetland encroachment. Wetlands are located on the project site, but no
impacts are intended.
3c. List the total estimated linear feet of all existing streams (intermittent and perennial) on the property:
175 If potentially impacted.
3d. Explain the purpose of the proposed project:
The purpose of the project is to provide water and sewer service to an economic development district delineated by
Orange County. The project will provide service to commercial and low volume industrial type customers.
3e. Describe the overall project in detail, including the type of equipment to be used:
The project Includes the installation of 15,912 If of 8 ",12" and 18" gravity sewer, 12,930 If of 10" forcemain, new sewer
pump station, and 14,025 If of 16" water main. The lines will be installed by a combination of open cut trenching, bore &
Jack, and directional boring. Streams will be crossed by boring to minimize disturbance.
4. Jurisdictional Determinations
4a. Have jurisdictional wetland or stream determinations by the
Corps or State been requested or obtained for this property /
® Yes ❑ No ❑ Unknown
project (including all prior phases) in the past?
Comments:
4b. If the Corps made the jurisdictional determination, what type
❑ preliminary ❑ Final
of determination was made?
4c. If yes, who delineated the jurisdictional areas?
Agency /Consultant Company: Dr. J.H. Carter III & Assoc.
Name (if known): William Mullin
Other:
4d. If yes, list the dates of the Corps jurisdictional determinations or State determinations and attach documentation.
Jurisdictional determination documents for this project have been submitted separately by Dr. J.H. Carrter III Associates.
5. Project History
5a. Have permits or certifications been requested or obtained "'To
Yes ❑ No ❑ Unknown
this project (including all prior phases) in the past?
5b. If yes, explain in detail according to "help file" instructions.
NC DENR DWQ issued a 401 Water Quality Certification and Authorization Certificate (DWO Project #12 -0894) in
October 2012. We are requesting a modification of that authorization due to additional wetland impacts.
Page 3 of 11
PCN Form — Version 1.3 December 10, 2008 Version

6. Future Project Plans
6a. Is this a phased project? Cl Yes ® No
6b. If yes, explain.
Page 4 of 11
PCN Form — Version 1.3 December 10, 2008 Version

C. Proposed Impacts Inventory
1. Impacts Summary
1 a. Which sections were completed below for your project (check all that apply):
® Wetlands ® Streams - tributaries ® Buffers
❑ Open Waters ❑ Pond Construction
2. Wetland Impacts
If there are wetland impacts proposed on the site, then complete this question for each wetland area impacted.
2a.
2b.
2c.
2d.
2e.
2f.
Wetland impact
Type of jurisdiction
number —
Type of impact
Type of wetland
Forested
(Corps - 404, 10
Area of impact
Permanent (P) or
(if known)
DWQ — non -404, other)
(acres)
Temporary T
W1 ❑ P [IT
❑ Yes
❑ Corps
❑ No
❑ DWQ
W2 ❑ POT
❑ Yes
❑ Corps
❑ No
❑ DWQ
W3 ❑ POT
❑ Yes
❑ Corps
❑ No
❑ DWQ
W4 ❑ POT
❑ Yes
❑ Corps
❑ No
❑ DWQ
W5 ❑ P ❑ T
❑ Yes
❑ Corps
0 N
❑DWQ
W6 ❑ POT
❑ Yes
❑ Corps
❑ No
❑ DWQ
2g. Total wetland impacts
0
2h. Comments: See Attached Table of Wetland Impacts
3. Stream Impacts
If there are perennial or intermittent stream impacts (including temporary impacts) proposed on the site, then complete this
question for all stream sites impacted.
3a.
3b.
3c.
3d.
3e.
3f.
3g.
Stream impact
Type of impact
Stream name
Perennial
Type of jurisdiction
Average
Impact
number -
(PER) or
(Corps - 404, 10
stream
length
Permanent (P) or
intermittent
DWQ — non -404,
width
(linear
Temporary (T)
(INT)?
other)
(feet)
feet)
S1 ❑ P [IT
❑ PER
❑ Corps
❑ INT
❑ DWQ
S2 ❑ P ❑ T
❑ PER
❑ Corps
❑ INT
❑ DWQ
S3 ❑ P ❑ T
❑ PER
❑ Corps
❑ INT
❑ DWQ
S4 ❑ P ❑ T
❑ PER
❑ Corps
❑ INT
❑ DWQ
S5 ❑ P ❑ T
❑ PER
❑ Corps
❑ INT
❑ DWQ
S6 ❑ P ❑ T
❑ PER
❑ Corps
❑ INT
❑ DWQ
3h. Total stream and tributary impacts
31. Comments: See Attached Table of Stream Impacts
Page 5 of 11
PCN Form — Version 1.3 December 10, 2008 Version

4. Open Water Impacts
If there are proposed impacts to lakes, ponds, estuaries, tributaries, sounds, the Atlantic Ocean, or any other open water of
the U.S. then individually list all open water impacts below.
4a.
4b.
4c.
4d.
4e.
Open water
Name of waterbody
impact number —
(if applicable)
Type of impact
Waterbody type
Area of impact (acres)
Permanent (P) or
Temporary T
01 ❑P ❑T
02 ❑ P
03 ❑P ❑T
04 ❑ P ❑T
4f. Total open water Impacts
4g. Comments:
5. Pond or Lake Construction
If Pond or lake construction proposed, then complete the chart below.
5a.
5b.
5c.
5d.
5e.
Wetland Impacts (acres)
Stream Impacts (feet)
Upland
Pond ID
Proposed use or purpose
(acres)
number
of pond
Flooded
Filled
Excavated
Flooded
Filled
Excavated
Flooded
P1
P2
SE Total
5g. Comments:
5h. Is a dam high hazard permit required?
❑ Yes ❑ No If yes, permit ID no:
51. Expected pond surface area (acres):
5J. Size of pond watershed (acres):
5k. Method of construction:
6. Buffer Impacts (for DWQ)
If project will impact a protected riparian buffer, then complete the chart below. If yes, then individually list all buffer impacts
below. If any impacts require mitigation, then you MUST fill out Section D of this form.
6a.
® Neuse ❑ Tar - Pamlico ❑ Other:
Project is in which protected basin?
❑ Catawba ❑ Randleman
6b.
6d.
6e.
6f.
6g.
Buffer impact
number —
EReason
Buffer
Zone 1 impact
Zone 2 impact
Permanent (P) or
Stream name
mitigation
(square feet)
(square feet)
Temporary T
required?
B1 ❑P [IT
❑Yes
❑ No
B2 ❑P
❑Yes
❑ No
B3 ❑P
❑Yes
❑ No
6h. Total buffer Impacts
6i. Comments: See Attached Table of Buffer Impacts
Page 6 of 11
PCN Form — Version 1.3 December 10, 2008 Version

Page 7 of 11
PCN Form — Version 1.3 December 10, 2008 Version
D. Impact Justification and Mitigation
1. Avoidance and Minimization
1 a. Specifically describe measures taken to avoid or minimize the proposed impacts in designing project.
See Avoidance and Minimization Attachment
1 b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques.
See Avoidance and Minimization Attachment
2. Compensatory Mitigation for Impacts to Waters of the U.S. or Waters of the State
2a. Does the project require Compensatory Mitigation for
impacts to Waters of the U.S. or Waters of the State?
® Yes ❑ No
2b. If yes, mitigation is required by (check all that apply):
❑ DWQ ® Corps
2c. If yes, which mitigation option will be used for this
project?
❑ Mitigation bank
❑ Payment to in -lieu fee program
❑ Permittee Responsible Mitigation
3. Complete If Using a Mitigation Bank
3a. Name of Mitigation Bank:
3b. Credits Purchased (attach receipt and letter)
[Type
Quantity
3c. Comments: Mitigatin options are being investigated. Approval letters and other documentation will be submitted as it
becomes available.
4. Complete if Making a Payment to In -lieu Fee Program
4a. Approval letter from in -lieu fee program is attached.
❑ Yes
4b. Stream mitigation requested:
linear feet
4c. If using stream mitigation, stream temperature:
❑ warm Cl cool ❑cold
4d. Buffer mitigation requested (DWQ only):
square feet
4e. Riparian wetland mitigation requested:
acres
4f. Non - riparian wetland mitigation requested:
acres
4g. Coastal (tidal) wetland mitigation requested:
acres
4h. Comments:
S. Complete if Using a Permittee Responsible Mitigation Plan
5a. If using a permittee responsible mitigation plan, provide a description of the proposed mitigation plan.
Page 7 of 11
PCN Form — Version 1.3 December 10, 2008 Version

6. Buffer Mitigation (State Regulated Riparian Buffer Rules) — required by DWQ
6a. Will the project result in an impact within a protected riparian buffer that requires
❑ Yes ® No
buffer mitigation?
6b. If yes, then identify the square feet of impact to each zone of the riparian buffer that requires mitigation. Calculate the
amount of mitigation required.
6c.
6d.
6e.
Zone
Reason for impact
Total impact
Multiplier
Required mitigation
(square feet)
(square feet)
Zone 1
3 (2 for Catawba)
Zone 2
1.5
6f. Total buffer mitigation required:
6g. If buffer mitigation is required, discuss what type of mitigation is proposed (e.g., payment to private mitigation bank,
permittee responsible riparian buffer restoration, payment into an approved in -lieu fee fund).
6h. Comments:
Page 8 of 11
PCN Form — Version 1.3 December 10, 2008 Version

E. Stormwater Management and Diffuse Flow Plan (required by DWQ)
1. Diffuse Flow Plan
1 a. Does the project include or is it adjacent to protected riparian buffers identified
® Yes ❑ No
within one of the NC Riparian Buffer Protection Rules?
1 b. if yes, then is a diffuse flow plan included? If no, explain why.
❑ Yes No
Comments: The project will not result in concentrated storm water discharges.
2. Stormwater Management Plan
2a. What is the overall percent imperviousness of this project?
less than 1 %
2b. Does this project require a Stormwater Management Plan?
❑ Yes ® No
2c. If this project DOES NOT require a Stormwater Management Plan, explain why: The project meets the criteria for a low
density project. Specifically the impervious area of the project will be less than 1 %, an agency approved erosion control
plan will be in place during construction, all disturbed areas will be revegetated after construction, and the project does
not include any impervious areas greater than 24 %.
2d. If this project DOES require a Stormwater Management Plan, then provide a brief, narrative description of the plan:
❑ Certified Local Government
2e. Who will be responsible for the review of the Stormwater Management Plan?
❑ DWQ Stormwater Program
❑ DWQ 401 Unit
3. Certified Local Government Stormwater Review
3a. In which local government's jurisdiction is this project?
❑ Phase II
3b. Which of the following locally- implemented stormwater management programs
❑ NSW
❑ USMP
apply (check all that apply):
❑ Water Supply Watershed
❑ Other:
3c. Has the approved Stormwater Management Plan with proof of approval been
❑ Yes ❑ No
attached?
4. DWQ Stormwater Program Review
❑ Coastal counties
❑ HOW
4a. Which of the following state- implemented stormwater management programs apply
❑ ORW
(check all that apply):
❑ Session Law 2006 -246
❑ Other:
4b. Has the approved Stormwater Management Plan with proof of approval been
attached?
❑ Yes ❑ No
5. DWQ 401 Unit Stormwater Review
5a. Does the Stormwater Management Plan meet the appropriate requirements?
❑ Yes ❑ No
5b. Have all of the 401 Unit submittal requirements been met?
❑ Yes ❑ No
Page 9 of 11
PCN Form — Version 1.3 December 10, 2008 Version

F. Supplementary Information
1. Environmental Documentation (DWQ Requirement)
1 a. Does the project involve an expenditure of public (federal /state /local) funds or the
® Yes ❑ No
use of public (federal /state) land?
1b. If you answered "yes" to the above, does the project require preparation of an
environmental document pursuant to the requirements of the National or State
❑ Yes ® No
(North Carolina) Environmental Policy Act (NEPA/SEPA)?
1c. If you answered "yes" to the above, has, the document review been finalized by the
State Clearing House? (If so, attach a copy of the NEPA or SEPA final approval
❑ Yes ❑ No
letter.)
Comments:
2. Violations (DWQ Requirement)
2a. Is the site in violation of DWO Wetland Rules (15A NCAC 2H .0500), Isolated
Wetland Rules (15A NCAC 2H .1300), DWQ Surface Water or Wetland Standards,
❑ Yes ® No
or Riparian Buffer Rules (15A NCAC 2B .0200)?
2b. Is this an after-the-fact permit application?
❑ Yes ® No
2c. If you answered "yes" to one or both of the above questions, provide an explanation of the violation(s):
3. Cumulative Impacts (DWQ Requirement)
3a. Will this project (based on past and reasonably anticipated future impacts) result in
❑ Yes ® No
additional development, which could impact nearby downstream water quality?
3b. If you answered "yes" to the above, submit a qualitative or quantitative cumulative impact analysis in accordance with the
most recent DWQ policy. If you answered "no," provide a short narrative description.
4. Sewage Disposal (DWQ Requirement)
4a. Clearly detail the ultimate treatment methods and disposition (non - discharge or discharge) of wastewater generated from
the proposed project, or available capacity of the subject facility.
Wastewater from the proposed project will be discharged to the City of Mebane wastewater collection system for
treatment and disposal at the City of Mebane WWTP (NC0021474). The WWTP has a permitted capacity of 2.50 MGD and is
using approximately 72.3% of its permitted capacity including allocated flow that is not yet tributary to the facility.
Page 10 of 11
PCN Form — Version 1.3 December 10, 2008 Version

5. Endangered Species and Designated Critical Habitat (Corps Requirement)
5a. Will this project occur in or near an area with federally protected species or
❑ Yes ® No
habitat?
5b. Have you checked with the USFWS concerning Endangered Species Act
® Yes ❑ No
impacts?
® Raleigh
5c. If yes, indicate the USFWS Field Office you have contacted.
❑ Asheville
5d. What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical
Habitat?
NHP Database Search
6. Essential Fish Habitat (Corps Requirement)
6a. Will this project occur in or near an area designated as essential fish habitat?
❑ Yes ® No
6b. What data sources did you use to determine whether your site would impact Essential Fish Habitat?
NHP Database Search, South Atlantic Habitat $ Ecosystem IMS website.
7. Historic or Prehistoric Cultural Resources (Corps Requirement)
7a. Will this project occur in or near an area that the state, federal or tribal
governments have designated as having historic or cultural preservation
❑ Yes ® No
status (e.g., National Historic Trust designation or properties significant in
North Carolina history and archaeology)?
7b. What data sources did you use to determine whether your site would impact historic or archeological resources?
National Register of Historic Places
8. Flood Zone Designation (Corps Requirement)
8a. Will this project occur in a FEMA- designated 100 -year floodplain? -T-
❑ Yes ® No
8b. If yes, explain how project meets FEMA requirements:
8c. What source(s) did you use to make the floodplain determination? National Flood Insurance Program DFIRM Panels
Mark Lacy
12 -20 -12
Applicant/AgenYs Printed Name
Applicant/Age ' Signature
Date
(Agent's signature is valid only if an adMorization letter from the applicant
Is provid ed.
Page I I of 11
PCN Form — Version 1.3 December 10, 2008 Version

Buckhom - Mebane EDO Water and Sewer Improvements Phase 2
Orange County, NC
Attachment for Wetland Impacts (Section C.2)
Table of Tem porary Wetland Im
acts Acrea a to be Retumed to Natural State
2a. Wetland impact
2c. Type of wetland
2e. Type of jurisdiction
Area of impact
number - Permanent P
()
2b. Type of impact
Yp p
2d. Forested
(Corps - 404,10 DWQ-
Plan Sheet
Lat. /Long.
or Temporary (T)
(if known)
non 404, other)
(acres)
W1 (T)
Excavation for Utility
PF01
Yes
Corps - 404
0.001
W1.1
36.090024/
Installation
79.245024
W2 (T)
Excavation for Utility
PF01
Yes
Corps - 404
0.052
W2.2
36.0826/
Installation
Excavation / Clearing
PF01
0.060
79.225565
W3 (T)
Yes
Corps - 404
W2.3
36.080892/
for Utility Installation
79.224305
W4 (T)
Excavation / Clearing
PF01
Yes
ps -404
Corps
0.017
W2.5
36.078889/
for Utility Installation
79.215
WS (T)
Excavation / Clearing
PF01
Yes
Corps - 404
0.093
W2.6 /
36.077S/
for Utility Installation
51.5
79.21444
W6 (T)
Excavation / Clearing
PF01
Yes
Corps - 404
0.007
S1.l
36.070833/
for Utility Installation
79.201667
Excavation / Clearing
PF01
Yes
Corps - 404
0.137
S1.1
36.07113/
W7 (T)
for Utility Installation
79.202229
W8 (T)
Excavation / Clearing
PF01
Yes
Corps - 404
0.144
51.1
36.073144 /
for Utility Installation
79.203150
W9 (T)
Excavation / Clearing
PF01
Yes
Corps - 404
0.253
51.2
36.073203/
for Utility Installation
79.204582
WIO (T)
Excavation for Utility
EM01
No
Corps -404
0.031
53.3
36.0658 /
Installation
79.257072
Wil (T)
Excavation / Clearing
PF01
Yes
Corps -'404
0.053
53.4
36.06781S/
for Utility Installation
79.253825
W12 (T)
Excavation / Clearing
PF01
Yes
Corps - 404
0.007
53.4
36.069436/
for Utility Installation
79.252418
W12a (T)
Excavation / Clearing
PF01
Yes
Corps - 404
0.002
53.5
36.070296/
for Utility Installation
79.250597
W13 (T)
Excavation / Clearing
PF01
Yes
Corps - 404
0.007
53.7
36.071026 /
for Utility Installation
79.243580
W14 (T)
Excavation / Clearing
PF01
Yes
Corps - 404
0.018
53.7
36.070567/
for Utility Installation
79.242783
2S. Total temporary
wetland impactsi impacts
0.885
2h. Comments:
Temporary and Permanent Wetland Impacts Page 1 of 2

Table of Permanent Wetland Impacts
2a. Wetland impact
2e. Type of Jurisdiction
number -Permanent (P)
2b. Type of impact
2c. Type of wetland
2d. Forested
(Corps - 404,10 DWQ -
Area of impact
Plan Sheet
Lat./Long.
or Temporary (T)
(if known)
non 404, other)
(acres)
W3 (P)
No Permanent Impact
PF01
Yes
Corps - 404
0.000
W3.1
36.090024/
79.245024
W2 (P)
No Permanent Impact
PF01
Yes
Corps - 404
0.000
W2.2
36.0826/
79.225565_
Conversion from
W3 (P)
Forested to
PF01
Yes
Corps - 404
0.063
W2.3 2.3
/
Herbaceous
79.224305
Conversion from
W4 (P)
Forested to
PF01
Yes
Corps - 404
0.005
W2.S
36.078889/
Herbaceous
79.215
Conversion from
WS (P)
Forested to
PF01
Yes
Corps -404
0.097
W2.6 /
36.0775/
Herbaceous
S1.5
79.21444
Conversion from
W6 (P)
Forested to
PF01
Yes
Corps - 404
0.005
S1.1
36.070833/
_
Herbaceous
79.201667
Conversion from
W7 (P)
Forested to
PFOi
Yes
Corps - 404
0.145
51.1
36.07113/
Herbaceous
79.202229
Conversion from
W8 (P)
Forested to
PF01
Yes
Corps - 404
0.110
SM
36.073144 /
Herbaceous
79.203150
Conversion from
W9 (P)
Forested to
PF01
Yes
Corps - 404
0.205
S1.2
36.073203/
_
Herbaceous
79.204582
W10 (P)
No Permanent Impact
EM01
No
Corps - 404
0.000
S3.3
36.0658 /
79.257072
Conversion from
Wii (P)
Forested to
PF01
Yes
Corps - 404
0.042
53.4
36.06781S/
Herbaceous
79.253825
Conversion from
_
W12 (P)
Forested to
PF01
Yes
Corps - 404
0.005
S3.4
36.069436/
_ Herbaceous
79.252418
W12a (p)
No Permanent Impact
_
PF01
Yes
Corps - 404
0.000
S3.S
36.070296/
79.250597
Conversion from
_
W13 (P)
Forested to
PFOI
Yes
Corps - 404
0.006
S3.7
36.071026/
Herbaceous
79.243580
W14 (P)
No Permanent Impact
PF01
Yes
Corps - 404
0.000
S3.7
36.070567/
79.242783
2S. Total permanent wetland Impactsi Impacts
0.683
2h. Comments:
Temporary and Permanent Wetland Impacts Page 2 of 2

Buckhorn - Mebane EDD Water and Sewer Improvements Phase 2
Orange County, NC
Attachment for Stream Impacts (Section C.3)
3a. Stream
3d. Perennial
3e. Type of
impact number
3c. Stream
(PER) or
jurisdiction (Corps
3f. Average
3g.lmpact
3b. Type of impact
stream
Length (linear
Plan Sheet
Lat. /long.
Permanent (P)
name
intermittent
404,10 DWQ-
width (feet)
feet)
or Temporary (T)
(INT)?
non -404, other)
51- P
Stabilization
UT to Sevenmile
INT
Corps - 404
9
20
W2.S
36.078889/
Creek
79.215
52 - P
Stabilization
UT to Sevenmile
INT
Corps 404
14
20
W2.5
36.078889/
Stabilization
Creek
20
79.215
53 - P
UT to Sevenmile
PER
Corps - 404
18
W2.6
36.077S/
Creek
79 21444
Non - Electric Utility
UT to Sevenmile
36.070833/
53A T
Line Construction
Creek
INT
Corps - 404
9
15
Si.i
79.201667
S4 - P
Stabilization
UT to Sevenmile
INT
Corps - 404
13
20
51.2
36.073333/
Stabilization
Creek
79.204167
36.073056/
55 - P
UT to Sevenmile
PER
Corps - 404
14
20
51.2
Creek
79.205
S6 - P
Stabilization
UT to Sevenmile
INT
Corps 404
12
20
51.4
36.075556/
Creek
79.213056
S7 - P
Stabilization
UT to Haw
INT
Corps - 404
6
20
53.4
36.070278/
Creek
79.2525
S8 - P
Stabilization
UT to Haw
PER
Corps - 404
20
20
53.5
36.070278/
Creek
79.2050833
3h. Total Stream and Tributary Impacts
175

Buckhom - Mebane EDD Water and Sewer Improvements Phase 2
Orange County, NC
Attachment for Buffer Impacts (Section C.6)
Table of Temporary
Buffer Im acts
6b. Buffer impact
6e. Buffer
number
6c. Reason for impact
6d. Stream name
mitigation
Zone 1 Impact
Zone 2 impact
Plan Sheet
Lat. /Long.
Permanent (P) or
6d. Stream name
mitigation
Zone 1 Impact
(square feet)
(square feet)
Lat. /Long.
Permanent P or
(1
required?
(square feet)
Temporary
required?
Temporary
B4 - T
Non - Electric Utility Line
UT to Sevenmile Creek
No
4,265
1,910
W2.5
36.078889/
Non - Electric Utility Une
Construction
36.078889 /
79.215
85 - T
Non - Electric Utility Une
UT to Sevenmile Creek
No
3,071
2,407
W2.6 /
36.0775 /
Maintenance Corridor
Construction
53.5
79.21444
87 T
Non - Electric Utility Line
UT to Sevenmile Creek
No
2,476
1,636
Si.i
36.070833 /
Construction
No
1 ,275
1,074
1,207
79 201667
BiOA T
Non - Electric Utility Line
UT to Sevenmile Creek,
No
1,543
53.2
36.073333/
87 - P
Construction
Wetland
No
1,079
702
sl.i
79.204167
8308 - T
Non - Electric Utility line
UT to Sevenmile Creek
No
1,720
1,338
51.2
36.073056/
BiOA - P
Construction
UT to Sevenmile Creek,
No
906
605
51.2
79.205
811 T
Non - Electric Utility Line
UT to Sevenmile Creek
No
1,602
1,282
51.4
36.075556 /
8108 - P
Construction
UT to Sevenmile Creek
No
960
630
53.2
79.213056
Maintenance Corridor
6h. Total Buffer Impacts:
14,677
1 9,780
61. Comments: Only protected riparian buffers are listed In this table. Impact to wetland and other non - protected buffers are listed in Exhibit A.
UT to Sevenmile Creek
Table of Permanent Buffer Im acts 1
6b. Buffer impact
6e. Buffer
number -
6c. Reason for impact
6d. Stream name
mitigation
Zone 1 Impact
Zone 2 Impact
Plan Sheet
Lat. /Long.
Permanent P or
(1
(square feet)
(square feet)
required?
Temporary
Non - Electric Utility Une
36.078889 /
P
UT to Sevenmile Creek
No
2,016
646
W2.5
Maintenance Corridor
79,215
Non - Electric Utility Une
W2.6 /
36.0775/
BS - P
UT to Sevenmile Creek
No
1 ,275
1,074
Maintenance Corridor
51.5
79.21444
87 - P
Non - Electric Utility Line
LIT to Sevenmile Creek
No
1,079
702
sl.i
36.070833 /
Maintenance Corridor
79.201667
BiOA - P
Non - Electric Utility Line
UT to Sevenmile Creek,
No
906
605
51.2
36.073333/
Maintenance Corridor
Wetland
79.204167
8108 - P
Non - Electric Utility Line
UT to Sevenmile Creek
No
960
630
53.2
36.073056/
Maintenance Corridor
79.205
UT to Sevenmile Creek
No
650
all - P
Non - Electric Utility Line
970
51.4
36.075556/
Maintenance Corridor
79.213056
6h. Total Buffer Impacts:
7,206
i 4,307
61. Comments: Only protected riparian buffers are listed In this table. Impact to wetland and other non - protected buffers are listed in Exhibit A.
1 Permanent buffer impacts are the result of maintenance corridors and occur In the some location as
the temporary impacts given above.

Buckhorn - Mebane EDD Water and Sewer Improvements Phase 2
Orange County, NC
Table of Non - Protected Wetland Buffer Impacts
Buffer ID
Temporary
Impact (ft2)
Permanent
Impact (ft)
Plan Sheet
B1 _
Existing Right-of-Way_
Existing Right-of-Way
5,3_45
W1.1
_
82_
133
B6_
W2.2
_ 543
7,950
_ _2,2_6_5
_ 0
1,354
_ _W2.3
W2.6 / S_2.1
_
B71
S_1.1
_
B8
1,787
S_1.1
B9 _
5,651
_ 1,7_67
5,088
2,346
_30
2,189
S_1.1
B10C
_ 790
53.2
53.3
_
B_12
813
_2,238
905
53.3
B14
6,73_8
53.4
B15
3,562
_2,824
1,542
1,663
_ S3_.4
S3.5
_
B16
B17
3,899
_
4,19_7
1,831
B18 _ _
7,205
542
3,15_2
__53.5
S_3.7
B19
2,183
S3.7
Totals:
56,620
22,966
1 Excludes Protected Stream Buffer

Buckhorn- Mebane EDD Phase 2
Water and Sewer Improvements
Avoidance and Minimization for Streams, Wetlands, and Riparian Buffers
General Desian Measures
The proposed water and sewer mains were aligned to limit stream crossings and impacts to protected
riparian buffers. After the requested wetland delineation was completed much of the project was
redesigned to avoid or minimize impacts to wetlands and wetland buffers. Impacts that remain were
required by topography and property constraints. Stream crossings were limited, and every effort was
made to make perpendicular stream crossings. Where this was not possible the permanent easement is
wide enough to allow the permanent cleared maintenance corridor to cross the riparian buffer near 75
degrees. (Stream Impact S4). In addition, impacts are minimized by using directional and horizontal
bores at stream crossings, and minimizing limits of disturbance in wetlands and riparian buffers during
construction. The project does not include the loss of any wetlands. Necessary excavation in wetlands
will be backfilled with native soil to pre- existing grade contours. Gravity sewer pipe in wetlands or
wetland buffer will be pressure rated pipe tested to water main standards, manholes will have internal
and external gaskets at joints, a waterproof interior coating, and watertight ring and cover. Anti -seep
collars will be placed on gravity sewer pipelines at the downstream limits of all wetlands and every 150'
within wetlands.
Construction Techniques
Construction impacts are minimized by using bridge mats at stream crossings, minimizing clearing limits
within wetlands and buffers, and avoiding open trenching in streams. Permanent maintenance access• is
provided by rip rap fords to provide stability to the stream channel while not obstructing flow or
changing elevations. In addition, an erosion control plan approved by NCDENR Division of Land
Resources will be implemented to prevent off -site sediment transfer and sedimentation of surface
waters.
Specific details for impacts to wetlands are described below.
Wetlands
W1: The wetland is located in the existing road right of way and will not be permanently impacted.
W2: This wetland is also located along road right of way and has been impacted previously.
Temporary impacts are likely to occur during the installation of the waterline and bore under the
roadway. The project will not cause permanent impacts to this wetland.

W3: This wetland is located along the controlled access road right of way for 140/85. As such, the
line will need to be installed outside the existing right -of -way to allow for maintenance access.
Permanent impacts will consist of conversion from forested to herbaceous wetlands.
W4: This wetland is also located along the controlled access right of way for 140/85 and is adjacent
to intermittent streams. The water main in this area will be installed by directional bore to minimize
stream impacts.
W5: The locations of the water and sewer mains in this area are dictated by topography. The sewer
main needs to be in this low area in order to make future service extensions to areas north of 1
40/85 possible. Water and sewer mains were kept together to avoid impacts from multiple
maintenance corridors.
W6 and W7: The sewer main needs to be installed in this corridor due to topography and field
constraints. The line cannot be moved closer to the existing pond without risking damage to the
pond, and rerouting the line around the pond would increase the depth of the line approximately 6
— 8 feet, require the use of ductile iron pipe due to depth, and add approximately 260 If of sewer
main and two manholes. The combined cost of the material change, additional excavation due to
depth, and additional length would increase installation cost by approximately $53,000. As such, the
alternative alignment was not considered to be feasible.
W8 and W9: Impact to this section of wetland is unavoidable due to topography, service area
requirements, and the extent of the existing wetlands. Other alignment options were considered.
However, wetland impacts would not be eliminated and the alternate alignment would add
approximately 500 If of pipe and three manholes to this section of gravity sewer. Much of the
section would need to be installed 6 — 8 feet deeper than the proposed alignment, which would
require ductile iron pipe. The total estimated additional cost of the alternate alignment is $52,700.
As such, the alternative alignment was not considered to be feasible.
W10: This wetland is not currently forested. After construction of the proposed project the wetland
will return to its natural state. A future residential development in this area is planned. Any impacts
associated with this development will be permitted at a later date by others. Cumulative impacts of
this future project will be minimized by existing County ordinances.
W11: Impacts to this wetland were necessary to avoid / minimize impacts to an existing spring
located on the south west border of the wetland. The concern is that excavation and or blasting for
rock removal would disrupt the existing spring.
W12: This wetland is located adjacent to an existing stream that must be crossed and cannot be
avoided.

W12a: This wetland is located adjacent to an existing stream and may be temporarily impacted by
clearing and excavation during construction. After construction is complete the wetland will return
to its natural state. As such, the project will not cause permanent impacts.
W13: This wetland is unavoidable due to topography. The crossing is located at the narrow point of
the wetland.
W14: This wetland is located adjacent to road right -of -way and will be temporarily impacted by
construction. Since the line will be inside the cleared right of way there will be no permanent
impacts.