20120816 Ver 1_401 Application_20120812

20126816
Hazen and Sawyer, P.C.
4011
lkmffiD �OM Rale W, NC 2 se Blvd.
Raleigh, NC 27607
Environmental Engineers & Scientists 919 -833 -7152
Fax: [phone]
August 24, 2012
Mr. Ian McMillan
North Carolina Division of Water Quality
401/Wetlands Unit =�
1601 Mail Service Center
�� � Ally 2 8 2012
Raleigh, North Carolina 27699 - 1601 '•,DENa .y�
9YR}L'9nAs 1 rna _. R QUALITY
Re: Pre - Construction Notification, Friday Center Interceptor, Orange Water and Sewer
Authority, Chapel Hill, Orange County, North Carolina
Mr. McMillan,
Please find attached the Pre - Construction Notification (PCN) Application for the above
referenced project. The Orange Water and Sewer Authority ( OWASA) is proposing
modifications to their existing wastewater system to correct hydraulic deficiencies that were
identified in a Sewer Capacity Study that was completed in 2011. The modification will also
address future capacity needs in the area. OWASA proposes to install a new interceptor of a
larger diameter than the existing pipe. The existing pipe will be removed or abandoned in place.
The existing sewer easement will be utilized for the proposed interceptor in order to minimize
impacts to surrounding areas and protected resources.
Impacts associated with the proposed activities are 0.025 acre of temporary impact to
jurisdictional Section 404/401 wetlands, 0.36 acre of temporary impact to jurisdictional Section
404/401 open water, and 50 feet of temporary impact to jurisdictional Section 404/401 streams.
Protected riparian buffers will not be impacted by removal of woody vegetation for the proposed
project.
If you have any questions or require additional information, please contact me at 919.833.7152.
Thank you for your assistance.
Sincerely,
HAZEN AND SAWYER, P.C.
Keven Arrance
Scientist
Attachment
New York, NY 9 Armonk, NY . Woodbury, NY • Detroit, MI • Raleigh, NC • Charlotte, NC • Atlanta, GA. Fairfax, VA • Hollywood, FL • Boca Raton, FL • Fort Pierce, FL • Sarasota, FL • Miami, FL • Philadelphia, PA

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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
1a. Type(s) of approval sought from the
Corps:
®Section 404 Permit E] Section 10 Permit
1 b. Specify Nationwide Permit (NWP) number: 12, 33 or General Permit (GP) number:
1 c. Has the NWP or GP number been verified by the Corps?
❑ Yes
® No
1d. Type(s) of approval sought from the DWQ (check all that apply):
N 401 Water Quality Certification — Regular ❑ Non -404 Jurisdictional General Permit
❑ 401 Water Quality Certification — Express ❑ Riparian Buffer Authorization
1 e. Is this notification solely for the record
because written approval is not required?
For the record only for DWQ 401
Certification:
❑ Yes N 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
1 g. 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:
Friday Center Interceptor
2b. County:
Orange
2c. Nearest municipality / town:
Chapel Hill
2d. Subdivision name:
N/A
2e. NCDOT only, T.I.P. or state
project no:
3. Owner Information
3a. Name(s) on Recorded Deed:
See attached spreadsheet for property owner information related to items 3a -3h.
3b. Deed Book and Page No.
3c. Responsible Party (for LLC if
applicable):
3d. Street address:
3e. City, state, zip:
3f. Telephone no.:
3g. Fax no.:
A U
3h. Email address:
Wepalfda g ��+pE`f? QUgLI
wa�anrn
Page 1 of 12
PCN Form — Version 1.3 December 10, 2008 Version

4. Applicant Information (if different from owner)
4a. Applicant is:
❑ Agent ® Other, specify: Utility
4b. Name:
Ed Kerwin
4c. Business name
(if applicable):
Orange Water and Sewer Authority
4d. Street address:
400 Jones Ferry Road
4e. City, state, zip:
Carrboro, NC 27510
4f. Telephone no.:
919 - 968 -4421
4g. Fax no.:
919 - 968 -4464
4h. Email address:
ekerwin @owasa.org
5. Agent/Consultant Information (if applicable)
5a. Name:
Ms. Keven Arrance
5b. Business name
(if applicable):
Hazen and Sawyer, P.C.
5c. Street address:
4011 WestChase Blvd, Suite 500
5d. City, state, zip:
Raleigh, NC 27607
5e. Telephone no.:
919.863.9350
5f. Fax no.:
919.833.1828
5g. Email address:
karrance @hazenandsawyer.com
Page 2 of 12
PCN Form — Version 1.3 December 10, 2008 Version

B. Project Information and Prior Project History
1. Property Identification
1a. Property identification no. (tax PIN or parcel ID):
See attached spreadsheet for items 1a -1 c.
1 b. Site coordinates (in decimal degrees):
Latitude: Longitude: -
(DD.DDDDDD) (- DD.DDDDDD)
1 c. Property size:
acres
2. Surface Waters
2a. Name of nearest body of water (stream, river, etc.) to
Morgan Creek
proposed project:
2b. Water Quality Classification of nearest receiving water:
WS -IV; NSW
2c. River basin:
Cape Fear
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:
An existing maintained sewer line corridor exists within the three properties referenced in the response to Question B.1.
Adjacent to the corridor, land uses include an existing wastewater treatment plant, golf course, undeveloped wooded
areas, and roadway, which provides vehicular access to nearby institutional buildings and a park- and -ride lot.
3b. List the total estimated acreage of all existing wetlands on the property:
0.06 acre
3c. List the total estimated linear feet of all existing streams (intermittent and perennial) on the property:
200 feet (assuming 100 -foot wide corridor)
3d. Explain the purpose of the proposed project:
OWASA completed a sewer capacity study in 2011 and found the existing 12 -inch diameter interceptor to have hydraulic
deficiences. The recommendation following the capacity study is to replace the interceptor. Current deficiences and
future capacity needs will be addressed by the proposed new interceptor as it is proposed to be larger diameter than the
existing pipe. From the Friday Center Drive end of the project to approximately the left bank of Morgan Creek, the
needed capacity can be met by a 16 -inch diameter interceptor. From Morgan Creek to the end of the project within the
wastewater treatment plant property, the required capacity can be provided by a 24 -inch diameter interceptor. In order to
minimize impacts and encroachments, the design team selected the alternative to replace the existing interceptor, as
opposed to installing a second interceptor parallel to the existing pipe.
3e. Describe the overall project in detail, including the type of equipment to be used:
The project involves the replacement of the existing sewer line. The majority of the replaced length of line will be at the
same location as the existing line. Realignment between the golf course access road and the left bank of Morgan Creek
is proposed in order to avoid potential impacts to a family graveyard. A slight shift in the alignment near the end of Friday
Center Drive is proposed in order to accommodate installation via jack and bore under the road. To accommodate the
realignments, four (4) new manholes are proposed between Morgan Creek and the Mason Farm Biological Reserve
access drive. The installation of the replacement pipeline and new manholes is anticipated to require the use of a
bulldozer, front -end loader, backhoe, borer, crane, backfill compactors, concrete saws, jack hammer, and air
compressors.
Page 3 of 12
PCN Form — Version 1.3 December 10, 2008 Version

4.
Jurisdictional Determinations
4a. Have jurisdictional wetland or stream determinations by the
Corps or State been requested or obtained for this property /
project (including all prior phases) in the past?
Comments:
❑ Yes ® No ❑ Unknown
4b.
If the Corps made the jurisdictional determination, what type
of determination was made?
El Preliminary El Final
4c.
If yes, who delineated the jurisdictional areas?
Name (if known):
Agency /Consultant Company:
Other:
4d.
If yes, list the dates of the Corps jurisdictional determinations or State determinations and attach documentation.
5.
Project History
5a. Have permits or certifications been requested or obtained for
this project (including all prior phases) in the past?
❑ Yes ® No ❑ Unknown
5b.
If yes, explain in detail according to "help file" instructions.
6.
Future Project Plans
6a.
Is this a phased project?
❑ Yes ® No
6b. If yes, explain.
Page 4 of 12
PCN Form — Version 1.3 December 10, 2008 Version

C. Proposed Impacts Inventory
1. Impacts Summary
1a. 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 [DT
Access
❑ Yes
® No
® Corps
❑ DWQ
0.005
W2 ❑ P ®T
Open cut for pipe
❑ Yes
® Corps
0.02
installation
® No
E] DWQ
W3 ❑ P ❑ T
❑ Yes
❑ Corps
❑ No
❑ DWQ
W4 ❑ P ❑ T
❑ Yes
❑ Corps
❑ No
❑ DWQ
W5 ❑ P ❑ T
❑ Yes
❑ Corps
❑ No
❑ DWQ
W6 ❑ P [IT
❑ Yes
❑ Corps
❑ No
❑ DWQ
2g. Total wetland impacts
0.025
2h. Comments: .
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)? i i
other)
(feet)
feet)
S1 ❑ P ®T
Access
Morgan Creek
® PER
❑ INT
® Corps
❑ DWQ
37
50
S2 ❑ P ® T
Pipe installation
and culvert
Unnamed
Tributary to
❑ PER
® Corps
8
0
replacement
Morgan Creek
® 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
50
3i. Comments: Stream S2 is currently culverted within the construction limits. The culvert will be removed to accommodate
installation of the proposed interceptor and will be replaced thereafter. No new culvert length or location is proposed.
Page 5 of 12
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
beaver
01 ❑ P ®T
Unnamed beaver
Access and dewatering
impoundment of an
0.36
impoundment
unnamed tributary
to Morgan Creek
02 [:]PDT
03 ❑P ❑T
04 ❑P ❑T
4f. Total open water impacts
0.36
4g. Comments: Temporary access during construction will be conducted using swamp mats to protect the existing substrate
and avoid damage to or sinking of construction equipment in the impounded area. The access area will be dewatered during
construction in order to protect water quality and further aid access by heavy equipment. No permanent impacts will occur as
OWASA proposes to use the existing support piers with no modification of the portion thereof located below Ordinary High
Water.
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
5L Total
5g. Comments:
5h. Is a dam high hazard permit required?
❑ Yes ❑ No If yes, permit ID no:
5i. Expected pond surface area (acres):
5j. Size of pond watershed (acres):
5k. Method of construction:
Page 6 of 12
PCN Form — Version 1.3 December 10, 2008 Version

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: Jordan Lake
Project is in which protected basin?
❑ Catawba ❑ Randleman
6b.
6c.
6d.
6e.
6f.
6g.
Buffer impact
number —
Reason
Buffer
Zone 1 impact
Zone 2 impact
Permanent (P) or
for
Stream name
mitigation
(square feet)
(square feet)
Temporary T
impact
required?
B1 ❑P ❑T
El Yes
❑ No
B2 ❑P ❑T
El Yes
❑ No
B3 ❑ P ❑ T
❑ Yes
❑ No
6h. Total buffer impacts
6i. Comments: The project is located in the Jordan Lake watershed. Existing trees were considered in the design and are
avoided by construction. No impacts to the protected riparian buffer will occur due to the proposed project.
D. Impact Justification and Mitigation
1. Avoidance and Minimization
1a. Specifically describe measures taken to avoid or minimize the proposed impacts in designing project.
The design team considered installing a parallel interceptor to provide the additional needed capacity. Replacement of the
interceptor with a single pipe was selected in order to allow the limits of construction to be within the existing maintained
corridor and thereby avoid permanent impacts to forested wetlands and protected riparian buffers. Utilizing the existing pipe
support piers at the crossing of the open water area and of Morgan Creek results in no permanent impacts to either water
body and minimizes the duration of temporary impacts therein. Realignment of the interceptor at two locations also serves to
avoid potential impacts to a graveyard adjacent to Finley Golf Course and to minimize potential impacts to traffic and existing
roadways near the northeastern terminus of the project.
1 b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques.
Construction activities will be performed from outside jurisdictional waters of the US to the extent practicable. Road crossings
will be installed via jack and bore.
2. Compensatory Mitigation for Impacts to Waters of the U.S. or Waters of the State
2a. Does the project require Compensatory Mitigation for
❑ Yes ® No
impacts to Waters of the U.S. or Waters of the State?
2b. If yes, mitigation is required by (check all that apply):
❑ DWQ ❑ Corps
❑ Mitigation bank
2c. If yes, which mitigation option will be used for this
project?
❑ 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
Page 7 of 12
PCN Form — Version 1.3 December 10, 2008 Version

3c. Comments:
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 ❑ 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:
5. Complete if Using a Permittee Responsible Mitigation Plan
5a. If using a permittee responsible mitigation plan, provide a description of the proposed mitigation plan.
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
buffer mitigation?
❑ Yes ® No
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.
Zone
6c.
Reason for impact
6d.
Total impact
(square feet)
Multiplier
6e.
Required mitigation
(square feet)
Zone 1
3 (2 for Catawba)
Zone 2
1.5
61'. 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: Impacts to protected riparian buffers were avoided by the project design.
Page 8 of 12
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?
1b. If yes, then is a diffuse flow plan included? If no, explain why.
Comments: Diffuse flow measures will be included in the erosion and sedimentation
❑ Yes ® No
control plan. A separate plan to address diffuse flow measures will not be prepared
for the project.
2. Stormwater Management Plan
2a. What is the overall percent imperviousness of this project?
<0.01 %
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 will not result in an increase
of impervious surface. Therefore, a Stormwater Management Plan will not be required for the project.
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
4a. Which of the following state - implemented stormwater management programs apply
❑ HQW
❑ 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 12
PCN Form — Version 1.3 December 10, 2008 Version

F. Supplementary Information
1. Environmental Documentation (DWQ Requirement)
1a. Does the project involve an expenditure of public (federal /state /local) funds or the
® Yes ❑ No
use of public (federal /state) land?
1 b. 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)?
1 c. 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
letter.)
❑ Yes ❑ No
Comments:
2. Violations (DWQ Requirement)
2a. Is the site in violation of DWQ 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.
The proposed project addresses current hydraulic needs and anticipated future growth capacity demands. The project
will not induce growth that would otherwise not occur.
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 will not be generated from the proposed project.
Page 10 of 12
PCN Form — Version 1.3 December 10, 2008 Version

51
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.
II
Have you checked with the USFWS concerning Endangered Species Act
{II
impacts?
❑Yes No
[I Raleigh
59.
�
I
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?
The bald eagle is the only federally protected species listed for Orange County, NC, for which habitat may be available
within the project vicinity. No populations have been documented within a 2 -mile radius of the project, and no nests or
i eagles were observed during onsite investigations. No habitat for other federally protected species is present in the
vicinity of the project, and no known populations have been recorded by North Carolina Natural Heritage Program (17
July 12).
61 Essential Fish Habitat (Corps Requirement)
6a. Will this project occur in or near an area designated as essential fish habitat?
❑ Yes ® No
I
6ib. What data sources did you use to determine whether your site would impact Essential Fish Habitat?
NOAA Essential Fish Habitat online mapper tool (accessed 17 July 12)
7� Historic or Prehistoric Cultural Resources (Corps Requirement)
i
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
1
Yes No
status (e.g., National Historic Trust designation or properties significant in
iNorth Carolina history and archaeology)?
7b. What data sources did you use to determine whether your site would impact historic or archeological resources?
Files with the State Historic Preservation Office and the Office of State Archaeology were reviewed (18 November 11).
8. Flood Zone Designation (Corps Requirement)
8 1 a. Will this project occur in a FEMA- designated 100 -year floodplain?
® Yes C1 No
8b. if yes, explain how project meets FEMA requirements: Project involves the installation of an underground utility. No new
aboveground structures will be placed within the 100 -year floodplain. No change in elevation or flood capacity within the
100 -year floodplain will result from the project.
8c. What source(s) did you use to make the floodplain determination? FEMA Mapping Information Platform online mapper tool
(accessed 17 July 12)
I
I
I Applicant/Agent's Printed Name
Applican Agent's Signature
Date
'
(Agent's signature is valid only if an authorization letter from the applicant
is provided.)
Page 11 of 12 1
PCN Form — Version 1.3 December 10, 2008 Version

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