20130503 Ver 1_401 Application_20130513

H
May 9, 2013
To NC DWQ, Webscape Unit
512 North Salisbury Street
Raleigh, NC 27604
20130503
Transmittal
Your ref.
,lob no. 8614668
From Lisa Mitchell, PE
Attention GHD tel [phone]
Project
West Street Outfall Sewer Repair
GHD fax
919 - 890 -0601
Subject
PCN Application
Email
[e-mail]
Drawing noJ
Document ref.
Issue
Description/Title
No. of
copies
1
5/9
PCN Application Packages
5
2
5/9
PCN Application Fee
1
T,
ISSUED FOR ❑
your information
❑
construction
❑
quotation
®
your approval/comments
❑
for re- submission
❑
returned to you
Sent by p GHD messenger ❑ Receiver's messenger ❑ Mailed under separate cover ® Mail enclosed
Per:
REMARKS:
rFMMMAY C C — Tony K. Thomas — City of Durham 2013
8614668/09 May 2013 PCN 1 of 1

20130503
1 i
f ,
OF WAtF9 ' i
Qta p � Office Use' Only:
Corps action ID no.
o DWQ project no.
Form Version 1.4 January 2009
Pre - Construction Notification (PCN) Form
A. Applicant Information Elm
1. Processing
1 a. Type(s) of approval sought from the Corps: ❑ Section 404 Permit ❑ Section 10 Permit
1b. Specify Nationwide Permit (NWP) number: or General Permit (GP) number: 3884/3893
1c. Has the NWP or GP number been verified by the Corps?
❑ Yes ® No
1 d. 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
1 e. 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. 4 payment in3o a mitigation bank `-6r- in -lieu fee program proposedfor
® Yes ❑ No
mitigation of , ah— acptance letterr from mitigation banker
or in =lieu fee prog-am.?
1 g. Is the project located in any of NC's twenty coastal counties. If yes, answer 1 h
below.
❑ Yes ® No
1 h. Is the project located within a NC DCM Area of Environmental Concern (AEC)?
❑ Yes ® No
2. Project Information
2a. Name of project:
West Street Sewer Outfall Repair
2b. County:
Durham 1"1Af__L=kft�9U ftlylo I
2c. Nearest municipality / town:
City of Durham 17 1 UV
2d. Subdivision name:
n/a Z 0 13
2e. NCDOT only, T.I.P. or state project no:
n/a _
3. Owner Information Branch
3a. Name(s) on Recorded Deed:
City of Durham (utility easements)
3b. Deed Book and Page No.
Various
3c. Responsible Party (for LLC if
applicable):
City of Durham (Tony Thomas, Project Manager - Department of Water Management)
3d. Street address:
1600 Mist Lake Drive
3e. City, state, zip:
Durham, NC 27704
3f. Telephone no.:
919 - 560 -4381
3g. Fax no.:
919 - 560-4479
3h. Email address:
Tony.Thomas @durhamnc.gov
Page 1 of 10
PCN Form - Version 1.4 January 2009

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:
S. Agent/Consultant Information (if applicable)
5a. Name:
Steve Hilderhoff, PE
5b. Business name
(if applicable):
GHD Consulting Inc.
5c. Street address:
3128 Highwoods Blvd., Suite 140
5d. City, state, zip:
Raleigh, NC 27604
5e. Telephone no.:
919- 890 -0609
5f. Fax no.:
919 -890 -0601
5g. Email address:
steven.hilderhoff @ghd.com
Page 2 of 10

B. Project Information and Prior Project History
1. Property Identification
1a. Property identification no. (tax PIN or parcel ID):
Multiple properties with City of Durham Easement
1 b. Site coordinates (in decimal degrees):
I Latitude: list attch Longitude: list attch
1 c. Property size:
n/a acres
2. Surface Waters
2a. Name of nearest body of water to proposed project:
unnamed tributary to Ellerbe Creek
2b. Water Quality Classification of nearest receiving water:
WS- IV;NSW
2c. River basin:
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:
The outfall follows an unnamed tributary surrounded by bottomland and wet hardwood forest situated within a mostly medium density detached
dwellings residential community. The existing outfall is either very dose or exposed in the creek. Portions of the creek have been routed through
culverts. In total, the existing outfall length is about1,770 feet with 8 manholes. The outfall consists of 8- and 10 -inch VCP sanitary sewers.
3b. List the total estimated acreage of all existing wetlands on the property: 0.02 (none disturbed)
3c. List the total estimated linear feet of all existing streams (intermittent and perennial) on the property: 800 - affected parcels
3d. Explain the purpose of the proposed project:
Replace and rehabilitate aged sanitary sewers that are currently in dose proximity to or within the unnamed tributary.
3e. Describe the overall project in detail, including the type of equipment to be used:
This linear replacement sewer project invioves dig and replace practices. Installation will utilize excavators and backhoes for open cut installation.
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?
❑ Yes ❑ No ® Unknown
Comments: Not for this sewer project
4b. If the Corps made the jurisdictional determination, what type
of determination was made?
Preliminary 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.
S. Future Project Plans
6a. Is this a phased project?
❑ Yes ® No
6b. If yes, explain.
Page 3 of 10
PCN Form — Version 1.4 January 2009

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.
Wetland impact
number
Permanent (P) or
Temporary
2b.
Type of impact
2c.
Type of wetland
2d.
Forested
2e.
Type of jurisdiction
Corps (404,10) or
DWQ (401, other)
2f.
Area of
impact
(acres)
W1 -
Choose one
Choose one
Yes/No
-
W2 -
Choose one
Choose one
Yes/No
-
W3 -
Choose one
Choose one
Yes/No
W4 -
Choose one
Choose one
Yes/No
W5 -
Choose one
Choose one
Yes/No
W6 -
Choose one
Choose one
Yes/No
-
2g. Total Wetland Impacts:
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.
Stream impact
number
Permanent (P) or
Temporary m
3b.
Type of impact
3c.
Stream name
3d.
Perennial (PER) or
intermittent (INT)?
3e.
Type of
jurisdiction
3f.
Average
stream
width
(feet)
3g.
Impact
length
(linear
feet)
S1 T
Excavation & Stabilize
UT to Ellerbe
PER
DWQ
10
10
S2 P
manhole removal
UT to Ellerbe
PER
DWQ
14
5
S3 P
Sewer Removal
UT to Ellerbe
PER
DWQ
16
81
S4 T
Excavation & Stablize
UT to Ellerbe
PER
DWQ
17
17
S5 -
Choose one
_
-
S6 -
Choose one
-
3h. Total stream and tributary impacts
113
3i. Comments:
Excavation is for sewer installation. Original stream conditions will be restored after installation along with riprap/gabion matress bank stabilization.
Removal of manhole and existing sewer will restore back to a natural stream condition. Some rip rap already exists on the banks.
Page 4 of 10
PCN Form — Version 1.4 January 2009

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 indivi ually list all open water impacts below.
4a.
Open water
impact number
Permanent (P) or
Temporary
4b.
Name of waterbody
(if applicable)
4c.
Type of impact
4d.
Waterbody
type
4e.
Area of impact (acres)
01 -
Choose one
Choose
02 -
Choose one
Choose
03 -
Choose one
Choose
04 -
Choose one
Choose
4f. Total open water impacts
4g. Comments:
6. Pond or Lake Construction
If pond or lake construction proposed, the complete the chart below.
5a.
Pond ID number
5b.
Proposed use or
purpose of pond
5c.
Wetland Impacts (acres)
5d.
Stream Impacts (feet)
5e.
Upland
(acres)
Flooded
Filled
Excavated
Flooded
Filled
Excavated
P1
Choose one
P2
Choose one
5f. 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:
6. Buffer Impacts (for DWO)
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. Project is in which protected basin?
® Neuse ❑ Tar - Pamlico [] Catawba [] Randleman ❑ Other:
6b.
Buffer Impact
number —
Permanent (P) or
Temporary
6c.
Reason for impact
6d.
Stream name
6e.
Buffer
mitigation
required?
6f.
Zone 1
impact
(square
feet )
6g.
Zone 2
impact
(square
feet
B1 P
non - electric utility line inst.
UT to Ellerbe Creek
Yes
1,098
7,773
B2 P
non - electric utility line inst.
UT to Ellerbe Creek
Yes
12,414
6,119
63 P
non - electric utility line inst.
UT to Ellerbe Creek
Yes
3,486
1,627
B4 P
non - electric utility line inst.
UT to Ellerbe Creek
Yes
2,173
551
B5 P
non -electric utility line inst.
UT to Ellerbe Creek
Yes
7,101
1,837
B6 -
Yes/No
6h. Total Buffer Impacts:
26,272
17,907
6i. Comments: Site to be restored to original grade after installation and removal.
Page 5 of 10

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.
The alignment of replacement sewers has been pushed as far from the top of bank and riparian buffer zones as possible while considering the
constraints of existing structures and sewers and minimizing required easement aquisition required.
1 b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques.
Excavated areas will be restored to existing grade and stabilized.
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: EBX -EM, LLC
3b. Credits Purchased (attach receipt and letter)
Type: Riparian buffer
Type: Choose one
Type: Choose one
Quantity: 78,816 square feet
Quantity:
Quantity:
3c. Comments: statement of availability attached
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:
Choose one
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.
Page 6 of 10
PCN Form — Version 1.4 January 2009

S. 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
temp. excavation for sewer
Installation
26,272
3 (2 for Catawba)
78,816
Zone 2
1.5
6f. Total buffer mitigation required:
78,816
6g. If buffer mitigation �s requir`ed dlsc" u`ss�hw at pe of mitigation is proposed (e.g_,payment o private=mitigation 5ankD
permittee responsible riparia- `n�iuffe�restoration, payment into an approved in -lieu fee fund).
Payment Into an approved private mitigation bank. Letter of acceptance atatched.
6h. Comments: Zone two Impacts involve non - electric utility fine Impacts unrelated to stream crossings, thus Impacts are exempt
Page 7 of 10

E. Stormwater Management and Diffuse Flow Plan (required by DWQ)
1. Diffuse Flow Plan
1a. 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.
This is a linear buried project where disturbed land will be restored to existing grade.
❑ Yes ® No
2. Stormwater Management Plan
2a. What is the overall percent imperviousness of this project?
0
2b. Does this project require a Stormwater Management Plan?
❑ Yes ® No
2c. If this project DOES NOT require a Stormwater Management Plan, explain why:
This is a buried linear project where disturbed land will be restored to existing grade. No above ground grading or development is occuring, thus no
increase in impervious surface. The contractor will not be leaving trench excavations open for extended period - typically only what they can install and
fill In one day.
2d. If this project DOES require a Stormwater Management Plan, then provide a brief, narrative description of the plan:
2e. Who will be responsible for the review of the Stormwater Management Plan?
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
❑HQW
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
❑ Yes ® No
attached?
S. 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 8 of 10
PCN Form — Version 1.4 January 2009

F. Supplementary Information
1. Environmental Documentation (DWQ Requirement)
la. 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)?
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 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 Q 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.
Page 9 of 10
PCN Form — Version 1.4 January 2009

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 Q No
impacts?
5c. If yes, indicate the USFWS Field Office you have contacted.
5d. What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical
Habitat?
FWS ECOS - The area defined is very large (County wide). There are no impacts to streams except riprap /gabion matress. The area with the riparian
buffer zones are already disturbed (paved, grass, etc.) Easement area is 25' wide and sewers will be trenched, filled and restored to natural grade.
6. Essential Fish Habitat (Corps Requirement)
6a. Will this project occur in or near an area designated as essential fish habitat?
❑ Yes Q No
6b. What data sources did you use to determine whether your site would impact Essential Fish Habitat?
GIS Data and online at http: // ocean .floridamadne.org /efh_coraUms /viewer.htm
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 Q 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?
NC State Historic Preservation Office - HPOWEB GIS Service
8. Flood Zone Designation (Corps Requirement)
8a. Will this project occur in a FEMA- designated 100 -year floodplain?
❑ Yes Q No
8b. If yes, explain how project meets FEMA requirements:
8c. What source(s) did you use to make the floodplain determination?
GIS FEMA Floodmap Data Layers
Tony K. Thomas
Applicant/Agent's Printed Name
Applican ent's Signature
Date
(Agent's signature is valid only if an authorization
letter from the applicant is provided.)
Page 10 of 10

Version 1.4
January 9, 2009
401 Oversight/Express Permitting PCN Submittal Checklist
® The application fee (Checks may be made out to "N.C. Division of Water Quality"
$240.00 for 401 Water Quality Certification with minor impacts
- $570.00 for 401 Water Quality Certification with major impacts
- Express Review Fee (Amount requested on Acceptance Letter)
® Five (5) complete and collated copies of the PCN Application and supporting
documentation (instead of providing 5 copies of the full size plans you may provide two
copies of full size plans along with three copies of 11 X 17 plans)
NIA Stormwater Management Plan (if applicable — see PCN Form Help File Section E)
1) Please provide three (3) copies of the stormwater management plans along with all
supporting information pertaining to this project including the following:
a. Entire site development/layout plans delineating all drainage areas;
b. Design calculation sheets for all proposed BMP(s) sized for both on -site and
off-site drainage;
c. BMP supplements for each proposed BMP and Required Items Check List
( http : /ih2o.enr.state.nc.us /su /bmp forms.htm) along with all required
items;
d. A Notarized Operation & Maintenance Agreement for each stormwater
management facility;
e. Detailed construction drawing sheets shall include
(i) Erosion and sediment control plans;
(ii) Installation and planting schedules for the proposed BMPs;
(iii) Appropriately scaled plan views and cross sectional details of all
BMPs and associated components — inlet and outlet structures,
forebay, respective zones and pertinent elevations.
NIA If your project is located within a State implemented Riparian Buffer Rule Area, submit the
following along with site plans and PCN form:
1) Three (3) copies of the details for on -site diffuse flow provisions, (refer to
http://h2o.enr.state.nc.us/su/bmp_jorms.htm).
NIA DWQ Stream Determination Forms for streams on property and DWQ determination
letter for wetlands or streams (if applicable).
The following is the most critical of all the information that you must provide. The quality and
detail of the information will often determine the expeditiousness of the review. The following is
a checklist of the types of pertinent information required at a minimum:
Maps and Plans:
® The most recent version of the 1:24,000 USGS Topographic Map - Please cleanly draw or
delineate the site boundaries on the topographic map.
® The most recent version of the bound and published County NRCS Soil Survey Map -
(required for projects within the Neuse River Basin, Tar - Pamlico River Basin, Randleman
Lake Watershed and the Catawba River Basin, also recommended for all projects) -
Please clearly delineate the site boundaries, etc. on the map. If the delineation obscures
any of the features, it is recommended that a clean copy be provided. Copies of the

M" I . -
Version 1.4
January 9, 2009
current soil survey and /or soil survey map sheets can be obtained from the local NRCS
County Office (http: / /www.nc.nres.usda.gov . GIS soil layers are not acceptable.
® Vicinity map - Please clearly mark the location and approximate boundaries of the property
and project on the map. Please indicate north arrow and scale. Please include applicable
road names or State Road numbers.
® The Site Plan - The most critical map to be provided is the site plan. You must provide full
sized plans. The following is the minimum list of plans that are typically needed.
® Pre - construction /Pre- existing conditions - This sheet (or sheets) must include:
• All jurisdictional and non jurisdictional wetland, stream, water features, State regulated
buffers (delineated into Zones 1 and 2)
• Topographic contours with elevations
• Any existing structures and impervious areas
• Existing utility lines and easements
• Existing roads, culverts, and other pertinent features
• North arrow and the scale (1":50' scale is recommended).
® Proposed conditions - This sheet (or sheets) must include:
• All jurisdictional and non jurisdictional wetland, stream, water features, State regulated
buffers (delineated into Zones 1 and 2)
• Lot layout (if a subdivision or commercial development is proposed) - lots must be
developable without further impacts to jurisdictional and non - jurisdictional wetlands,
streams, water features. and State regulated buffers. Building envelopes must be
provided when streams, wetlands, riparian buffers, or water features exist on a lot
• All built -out structures and impervious cover
• Final grading contours with elevations
• All utilities and easements (including septic fields on all lots within 100 feet of stream,
wetland, or water features - if applicable)
• Impacted areas — these should correspond with the Impact numbers listed on your PCN
form.
N/A Drainage Plans - Final drainage plans must include the following:
• Locations and pertinent elevations and sizes of the stormwater collection system and
drainage ways
• All inlets and outlets must also be shown with pertinent elevations (All outlets to
wetlands must be at a non - erosive velocity, generally less than 2 ft/sec during the peak
flow from the 10 -yr storm)
• Scaled stormwater BMPs must also be indicated as required by DWQ rules and policies
• In certain cases (see Section E of PCN form), final stormwater management plans must
also be provided (see Stormwater Management Plan Checklist)
® Proposed Impacts - All impacts to jurisdictional and non jurisdictional wetland, stream,
water features, and State regulated buffers must be shown and labeled on the site plans at
a scale no smaller than 1" = 50'. All excavation, fill, flooding, stabilization, and other impacts
that will be conducted in or near jurisdictional and non jurisdictional wetland, stream, water
features, and State regulated buffers must be indicated. Please provide cross sectional
details showing the provisions for aquatic life passage (burial of culvert 20% for culverts s 48
inches, and 1 -foot for culverts > 48 inches).

Version 1.4
January 9, 2009
Wetland Impacts:
WA Precise grading and final elevation contours must be provided. Existing
vegetation and any clearing must be specified.
NIA All subsurface utility lines must indicate the location of anti -seep collars.
Construction detail for anti -seep collars must be provided.
NIA Roadway or other crossings of riparian wetlands may require floodway culverts to
maintain existing hydrological conditions.
NIA Plans should show that the hydrology of remaining wetlands on the site will be
maintained.
Stream Impacts:
® Stream impacts must be clearly shown on the plans. The centerline as well as
the banks of the stream must be surveyed or located by GPS for the portion of
the stream to be impacted.
NIA The inlet and the outlet of all culverts should be aligned with the stream as
much as possible. Inlet and outlet elevations and streambed elevations should
be indicated. Any inlet or outlet protection must be shown and enumerated on
the impact map(s).
MIA For bottomless culverts or other spans, a vertical cross section should be
provided that shows the minimum distance from each span to each stream bank,
the stream cross section, the height of the span above the stream and the
minimum distance from the edge of each footer to each stream bank.
Additionally, please provide a signed and sealed geotechnical report of
subsurface soils at the proposed bottomless culvert location. The report must
comply with the Division of Highways — Guidelines for Drainage Studies and
Hydraulic Design, prepared by A.L. Hankins, Jr., State Hydraulics Engineer -
1999.
NIA Multiple culverts or sectioned box culverts typically require the use of sills, off-
setting or other means to match the cross section of the existing stream (in order
to maintain stream stability and provide aquatic life passage). A vertical cross
section of the culverts should be shown overlain with the up and downstream
stream cross section including the stream flood -prone area.
WA Impacts associated with dam construction must indicate and enumerate all fill
associated with the dam footprint, spillway and any bank stream bank
stabilization. The length of stream impounded must also be indicated and
enumerated.

City of Durham
West Street Sewer Outfall Repair Project Narrative
The City of Durham is constructing a new sanitary sewer outfall and abandoning the
failing existing sanitary sewer outfall. The sewer is referred to as the West Street
Sewer Outfall. The proposed new sewer outfall will be between 8- and 12- inches in
diameter, which is the same size as the existing sewers in the project.
This linear project involves dig and replace practices. The dig and replace areas
require parallel pipe installation and abandonment of the existing pipe. There are a
few areas where the proposed improvement recommendation includes relocating the
interceptor away from existing structures and creeks. An existing below grade
stream crossing will be replaced with a ductile iron pipe crossing. This area will
utilize riprap for bank stabilization. In this area, a manhole, which currently is
situated in the existing creek, will be removed. Further downstream another portion
of the existing sewer will be removed, as it is currently daylighting in the creek.
Crews will mechanically cap the sections of existing sewer to remain and stabilize
the stream banks with riprap.
This project involves rehabilitation work on an existing sewer in a built -upon area.
Work does occur within the designated Riparian Buffer Zone for the Neuse River
Basin. Zone 1 work is allowable with mitigation and impacts are approximately
14,465 square feet. Zone 2 work is allowable without mitigation and includes 16,514
square feet. The 113 feet of linear feet of stream work should not result in a loss of
use as the streambed will be restored to a natural condition and the banks will be
stabilized with riprap. Disturbed riparian areas will be restored to natural grade and
seeded.

City of Durham - West Street Sewer Outfall Repair Location
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Durham
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Durham
Morrisville
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Friday, January 4 2013
N

35" 59 3T'
35" 59 20"
Soil Map — Durham County, North Carolina
(West Street Sewer Outfall)
� Map Scale: 1:3,690 if printed on A size (8.5" x 11 ") sheet.
0
fV fV
N Meters
A 0 50 100 200 300
N Feet
0 200 400 800 1,200
USDA Natural Resources
Conservation Service
Web Soil Survey
National Cooperative Soil Survey
1/4/2013
Page 1 of 3
35° 59 36"
35° 59 20"

MAP LEGEND
Area of Interest (AOI)
`—
Area of Interest (AO I)
Soils
Soil Map Units
Special
Point Features
iU
Blowout
®
Borrow Pit
,X-
Clay Spot
y
Closed Depression
Gravel Pit
Gravelly Spot
Landfill
Lava Flow
,16
Marsh or swamp
.R.
Mine or Quarry
Miscellaneous Water
O
Perennial Water
Rock Outcrop
+
Saline Spot
Sandy Spot
Severely Eroded Spot
(�
Sinkhole
Slide or Slip
Sodic Spot
-3
Spoil Area
a
Stony Spot
Soil Map – Durham County, North Carolina
(West Street Sewer Outfall)
lZ Very Stony Spot
Wet Spot
AL Other
Special Line Features
Gully
Short Steep Slope
Other
Political Features
0 Cities
Water Features
Streams and Canals
Transportation
Rails
Interstate Highways
US Routes
Major Roads
Local Roads
MAP INFORMATION
Map Scale: 1:3,690 if printed on A size (8.5" X 11 ") sheet.
The soil surveys that comprise your AOI were mapped at 1:15,840
Warning: Soil Map may not be valid at this scale.
Enlargement of maps beyond the scale of mapping can cause
misunderstanding of the detail of mapping and accuracy of soil line
placement. The maps do not show the small areas of contrasting
soils that could have been shown at a more detailed scale.
Please rely on the bar scale on each map sheet for accurate map
measurements.
Source of Map: Natural Resources Conservation Service
Web Soil Survey URL: hftp : / /websoilsurvey.nres.usda.gov
Coordinate System: UTM Zone 17N NAD83
This product is generated from the USDA -NRCS certified data as of
the version date(s) listed below.
Soil Survey Area: Durham County, North Carolina
Survey Area Data: Version 15, Jul 3, 2012
Date(s) aerial images were photographed: 8/28/2006; 6/19/2006
The orthophoto or other base map on which the soil lines were
compiled and digitized probably differs from the background
imagery displayed on these maps. As a result, some minor shifting
of map unit boundaries may be evident.
USDA Natural Resources Web Soil Survey 1/4/2013
Conservation Service National Cooperative Soil Survey Page 2 of 3

Soil Map-Durham County, North Carolina
Map Unit Legend
West Street Sewer Outfall
Durham County, North Carolina (NC063)
Map Unit Symbol
Map Unit Name
Acres in AOI
Percent of AO1
Ur
Urban land
02
3.6%
WsE
White Store sandy loam, 10 to 25
percent slopes
2.0
34.1%
WwC
White Store -Urban land complex, 0 to
10 percent slopes
3.7
62.2%
Totals for Area of Interest
6.9
100.0%
VSDA Natural Resources Web Soil Survey 1/4/2013
Conservation Service National Cooperative Soil Survey Page 3 of 3

West Street Sewer Outfall Repair Project
City of Durham - Department of Water Management
Stream Impact Coordinate Table
Impact Latitude
Longitude
Stream Crossing 35.9925
- 78.8718
to
to
35.9924
- 78.8717
Manhole Abandonment 35.9919 - 78.8726
Stream Crossing 35.9890 - 78.8772
Exposed Sewer in 35.9895 - 78.8757
Stream Removal to to
35.9894 - 78.8760

PROPOSED PROPOSED MT
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Ex— LM D-W— EAAA — CITY OF DURHAM, NORTH CAROLINA
= LAM ft WEST STREET OUTFALL SEWER REPAIR
Appi SANITARY SEWER PLAN
GMD c4i'll"u"i &r km "N' (DRM 1AARCl STREAM III BUFFER IMPACTS
A PON - STREAM & BUFFER IMPACTS LAM T " IDS -°e im— P ,
Sca Diewh D le NOR 1�40` Arch 86-14668-PCN Row A

Species By County Report
Species Reports
Environmental Conservation Online System
llwww Ivrs v
Spec es un eport
The following report contains Species that are known to or are believed to occur in this county Species with
range unrefined past the state level are now excluded from this report If you are looking for the Section 7
range (for Section 7 Consultations), please visit the IPaC Ilipacl application
County Durham, MC
Group( countvSearchlspeclesSyCountvReportaction ?d- 16544$�&d- 16640- o=2 &d- 166440= 1&firs= 370631 JName
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speciesBvCountvReporLaction?d- 16604- e= 6&6576706f1274-1 &Rps- 370631
Last updated January 4, 2013
ECOS Home (iecoslhidexPubiic do l I Contact Us (lecosihelpdesk do ?version =TESS PUBLIC -1 1 111
Page 1 of 1
http: / /ecos.fws.gov /tess_ public /countySearch! speciesByCountyReport.action ?fips =37063 1/4/2013

Group
Name'
[Population
IStatus
ILead Office
lRecovery Plan Name
lRecovery Plan Stage
Flowenng Plants
ISmooth coneflower Echinacea
lEndartgered
lRaleigh Ecological Services
ISmooth Coneflower
IFinal
Rmwering Plants
IMIchawes sumac Rhua
lEndangered
lRaleigh Ecological Services
IMIchatoes Sumac
Final

Forrest Creek Riparian Buffer Mitigation Bank
Rudolph Riparian Buffer Bank
Statement of Availability May 08, 2013
NC Division of Water Quality U.S. Army Corps of Engineers
Ms. Katie Merritt Mr. Monti Matthews
401 Oversight /Express Permitting Unit CESAW -RG -R
1650 Mail Service Center Raleigh Regulatory Field Office
Raleigh, NC 27699 -1650 3331 Heritage Trade Center, Suite 105
Wake Forest, NC 27587
Re Project: City of Durham: West Street Outfall Project
This document confirms that the City of Durham (Applicant) for the West Street Outfall Project
has expressed an interest to utilize 78.816 Square Feet of Riparian Buffer Mitigation Credits
from either of the EBX Neuse Riparian Buffer Umbrella Mitigation Bank /Rudolph Site, Forrest
Creek Riparian Buffer Mitigation Bank, and /or the Upper Neuse Buffer Bank located in Neuse-
Cedar Grove Site, all located in HUC 03020201. .
Banker will notify applicant if the 78.816 Sa. Ft. of Buffer Mitigation become considered "At
Risk" of not being available prior to impact. Credits are not considered secured until payment
in full is received from the applicant resulting in the issuance of a Bill of Sale and Affidavit of
Sale by the bank acknowledging that the applicant has fully secured credits from the bank and
the Banker has accepted full responsibility for the mitigation obligation requiring the
credits /units.
The Banker will issue the Affidavit of Sale within ten (10) days of receipt of the balance of the
Purchase Price. Banker shall provide to Applicant with a copy of the Affidavit of Sale and a
documented copy of the debit of credits from the Bank Official Credit Ledger(s) showing the
permit number and the resource type secured by the applicant. A copy of the Affidavit of Sale,
with an updated Official Credit Ledger will also be sent to regulatory agencies showing the
proper documentation.
If any questions need to be answered, please contact me at 239 - 872 -1678
Best Regards
^44 a
Matthew R. Fisher
EBX -EM, LLC
909 Capability Drive Suite 3100. Raleigh, NC 27606