20140351 Ver 1_401 Application_20140414

I��v AND S�MU
Environmental Engineers & Scientists
April 8, 2014
North Carolina Division of Water Resources
401 & Buffer Permitting Unit
512 North Salisbury Street
Raleigh, North Carolina 27604
2 0 1 4 03 5 1
Hazen and Sawyer, P.C.
4011 WestChase Blvd.
Raleigh, NC 27607
919- 833 -7152
Fax: [phone]
iC C LEW2 p
i
APR 9 2014
rJR - wA Ai
Re: Pre - Construction Notification, T. Z. Osborne Water Reclamation Facility Upgrades and
Expansion — Phase 3, City of Greensboro, Greensboro, Guilford County, North Carolina
To Whom It May Concern,
Please find attached the Pre - Construction Notification (PCN) Application for the above
referenced project. The City of Greensboro (City) is proposing to construct a new chlorine
contact tank and associated cascade aerator and to install a new 54" diameter effluent
discharge pipeline. The proposed infrastructure is part of the three -phase project to upgrade
and expand the existing T.Z. Osborne Water Reclamation Facility (WRF). The expansion is
necessary in order to provide treatment capacity to accommodate the flows that have
historically been handled at the North Buffalo Creek WRF, which will be diverted in their entirety
to the T.Z. Osborne WRF upon completion of the expansion and upgrade.
In order to accommodate the proposed chlorine contact tank and cascade aerator, onsite
grading will be necessary, which will result in temporary and permanent impacts to the adjacent
jurisdictional wetland. Installation of the proposed 54" effluent discharge pipeline will result in
temporary impacts to the adjacent jurisdictional open water and wetland area as well as
temporary and permanent impacts to South Buffalo Creek, a perennial stream. Permanent
impacts within South Buffalo Creek will include extension of the existing headwall, removal of
the existing downstream wingwall, and construction of a new downstream wingwall to
accommodate the proposed discharge pipeline. Sedimentation in the stream at the outfall has
occurred and will be dredged during construction. Riprap is proposed to be placed in the
stream bed at the outfall in order to protect the stream from future degradation due to erosive
forces of the increased discharge volume. In- stream work will result in temporary impacts due
to the use of coffer dam to create a dry work area within South Buffalo Creek. Upon completion
of in- stream work, the coffer dam will be removed, and normal flow will be allowed to return.
Impacts associated with the proposed activities are 0.005 acre of permanent impacts to
jurisdictional wetlands, 0.034 acre of temporary impacts to jurisdictional wetlands, 0.005 acre of
temporary impacts to jurisdictional open water, 40 feet of permanent impacts to jurisdictional
Section 404 stream, 60 feet of temporary impacts to a jurisdictional Section 404 stream, 1,824
square feet of temporary impacts to Zone 1 riparian buffer, and 902 square feet of temporary
impacts to Zone 2 riparian buffer.
New York, NY . 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

NCDWR, Webscape Unit
April 8, 2014
Page 2
If you have any questions or require additional information, please contact me at 919.863.9256.
Thank you for your assistance.
Sincerely,
HAZEN AND SAWYER, P.C.
-v✓ Linda Diebolt
Senior Principal Scientist
Attachment

2 0 1 4 0 3 5 1
o�of warFgoG li ' Office Use Only:
- Corps action ID no.
o t DWQ project no.
Form Version 1.4 January 2009
Page 1 of 10
PCN Form — Version 1.4 January 2009
Pre - Construction Notification (PCN) Form
A.
Applicant Information
1.
Processing
1 a. Type(s) of approval sought from the Corps:
❑X Section 404 Permit ❑ Section 10 Permit
1 b.
Specify Nationwide Permit (NWP) number: 12 or General Permit (GP) number:
1 c.
Has the NWP or GP number been verified by the Corps?
❑ Yes ❑X No
1 d.
Type(s) of approval sought from the DWQ (check all that apply):
X❑ 401 Water Quality Certification — Regular ❑ Non -404 Jurisdictional General Permit
❑ 401 Water Quality Certification — Express ❑X 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 X❑ No
For the record only for Corps Permit:
❑ Yes ❑X 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 ❑X No
1g.
Is the project located in any of NC's twenty coastal counties. If yes, answer 1 h
below.
❑ Yes ❑X 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:
T.Z.Osborne Water Reclamation Facility (WRF) Expansion and Upgrades
2b.
County:
Guilford
2c.
Nearest municipality / town:
McLeansville
2d. Subdivision name:
M
2e.
NCDOT only, T.I.P. or state project no:
3.
Owner Information
6 ddV
3a.
Name(s) on Recorded Deed:
City of Greensboro
I run
3b.
Deed Book and Page No.
DB2994 P481
t)
3c.
Responsible Party (for LLC if
applicable):
3d.
Street address:
2350 Huffine Mill Road
3e.
City, state, zip:
McLeansville, NC 27301
3f.
Telephone no.:
336.373.7740
3g.
Fax no.:
3h. Email address:
Page 1 of 10
PCN Form — Version 1.4 January 2009

4.
Applicant Information (if different from owner)
4a. Applicant is
❑ Agent ❑X Other, specify utility
4b
Name
Steven Drew, Water Resources Director
4c
Business name
(if applicable)
City of Greensboro
4d
Street address
P O Box 3136
4e
City, state, zip
Greensboro, NC 27402
4f
Telephone no
336 373 5855
4g
Fax no
336 373 5834
4h
Email address
steve drew @greensboro -nc gov
5.
Agent/Consultant Information (if applicable)
5a
Name
Linda Diebolt
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 9256
5f
Fax no
919 833 1828
5g
Email address
Idiebolt @hazenandsawyer com
Page 2 of 10

B.
Project Information and Prior Project History
1.
Property Identification
1a
Property Identification no (tax PIN or parcel ID)
1905950037100009
lb
Site coordinates (in decimal degrees)
Latitude 36 099628 Longitude 79 689549
1c
Property size
4555 acres
2.
Surface Waters
2a
Name of nearest body of water to proposed project
South Buffalo Creek
2b
Water Quality Classification of nearest receiving water
WS -V, NSW
2c
River basin
Cape Fear, subbasin 03 -06 -02
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 property consists of an approximately 455 5 -acre parcel that is mainly undeveloped and wooded Approximately 75 9 acres in the southeastern
portion of the site contains the T Z Osborne WRF and its associated discharge into South Buffalo Creek (Figure 1) The T Z Osborne WRF was
corfstructed in 1984 and is currently permitted to discharge 40 million gallons per day (mgd) into South Buffalo Creek
3b
List the total estimated acreage of all existing wetlands on the property 25
3c
List the total estimated linear feet of all existing streams (intermittent and perennial) on the property 3,500
3d Explain the purpose of the proposed project
See,attached information
3e Describe the overall project in detail, including the type of equipment to be used
See attached information
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 ❑X No ❑ Unknown
Comments
4b
Ifthe,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
6.
Future Project Plans
6a
Is this a phased project?
® Yes ❑ No
6b If yes, explain
See attached information
Page 3 of 10
PCN Form — Version 1 4 January 2009

C. Proposed Impacts Inventory
1. Impacts Summary
la Which sections were completed below for your project (check all that apply)
❑X Wetlands ❑X 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 impact
Type of wetland
Forested
Type of jurisdiction
Area of
number
Corps (404,10) or
impact
Permanent (P) or
DWQ (401, other)
(acres)
Temporary
W1 P
Fill
Bottomland Hardwood Forest
Yes
Corps
0 005
W2 T
Construction Access
Bottomland Hardwood Forest
Yes
Corps
0 022
W3 T
Construction Access
Bottomland Hardwood Forest
Yes
Corps
0 001
W4 T
Construction Access
Bottomland Hardwood Forest
Yes
Corps
0 011
W5
Choose one
Choose one
Yes /No
-
W6
Choose one
Choose one
Yes /No
2g Total Wetland Impacts:
0 039
2h Comments
W1 and W2 impacts are proposed to accommodate grading for the proposed new chlonne contact tank and cascade aerator W3 and W4 impacts are
proposed to accommodate the installation of the proposed effluent discharge pipe
3. Stream,lmpacts
If thererare 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 (PER) or
Type of
Average
Impact
number
intermittent (I NT)*?
jurisdiction
stream
length
Permanent (P) or
width
(linear
Temporary (T)
(feet)
feet)
S1 P
Fill
South Buffalo Creek
PER
Corps
25
40
S2 T
Coffer dam
South Buffalo Creek
PER
Corps
25
60
S3
Choose one
-
-
S4 -
Choose one
-
S5 -
Choose one
-
S6 -
Choose one
3h Total stream and tributary impacts
60
31 Comments
S1 impacts includes removing the existing wingwall, constructing a new wingwall, extending the headwall to accommodate the additional discharge
pipe, excavating sediment from the stream bed at the outfail, and placing nprap at the outfall to protect the stream bed from further degradation The
permanent impacts will be located against the bank within the stream reach that will be impacted by the temporary coffer dam Therefore, all stream
impacts will be within a 60 -foot length of stream
Page 4 of 10
PCN Form —Version 14 January 2009

4. Open Water Impacts
Ifthere °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
Tem ora
4b
Name of waterbody
(if applicable)
4c
Type of impact
4d
Waterbody
type
4e
Area of Impact (acres)
01 T
unnamed
Excavation
Pond
0 005
02 =
Choose one
Choose
03 -
Choose one
Choose
04 -
Choose one
Choose
4f Total open water impacts
0 005
4g� Comments Impacts consist of temporary excavation to accommodate the installation of the proposed effluent discharge pipe
5. 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
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 Im acts,re uire mite ation, then you MUST fill out Section D of this form
6a. Project is imwhich 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 T
excavation for pipe install
South Buffalo Creek
No
1,824
902
B2
Yes /No
B3 -
Yes /No
B4 -
Yes /No
B5 _
Yes /No
B6 _
T
Yes /No
6h Total Buffer Impacts:
1,824
902
61 Comments Ground disturbance and temporary removal of vegetation to accommodate installation,of effluent discharge pipe will be, necessary
Upon final grading, grassy areas that are disturbed will be reseeded, and removed trees, if any, will be replaced in -kind
Page 5 of 10

D. Impact Justification and Mitigation
1. Avoidance and Minimization
1a Specifically describe measures taken to avoid or minimize the proposed impacts in designing project
See attached information
1 b Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques
See attached information
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 ❑X 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 Choose one
Type Choose one
Type Choose one
Quantity
Quantity
Quantity
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
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

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
15
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 7 of 10

E.
Stormwater Management and Diffuse Flow Plan (required by DWQ)
1.
Diffuse Flow Plan
la
Does the project include or is it adjacent to protected riparian buffers identified
❑ Yes ® No
within one of the NC Riparian Buffer Protection Rules?
lb
If yes, then is a diffuse flow plan included? If no, explain why
❑ Yes ❑ No
2.
Stormwater Management Plan
2a
What is the overall percent imperviousness of this project?
001%
2b
Does this project require a Stormwater Management Plan?
❑ Yes ❑X No
2c
If this project DOES NOT require a Stormwater Management Plan, explain why
The master site plan was approved in 2009 and has not expired The project is grandfathered in to pre- Jordan
Lake buffer rules and relative to water
quality requirements due to its location on South Buffalo Creek and the resulting nonapplicability of peak flow requirements
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
❑ NSW
3b
Which of the following locally - implemented stormwater management programs
❑ 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?
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 8 of 10
PCN Form —Version 14 January 2009

F. Supplementary Information
1. Environmental Documentation (DWQ Requirement)
la Does the project Involve an expenditure of public (federaVstate /local) funds or the
0 Yes ❑ No
use of public (federal/state) land?
lb 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
M 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
X❑ Yes ❑ No
letter) FONSI is attached
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,
El Yes ❑X No
or Riparian Buffer Rules (15A NCAC 2B 0200)?
2b Is this an after - the -fact permit application?
El Yes ❑X 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 ❑X 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 project is one phase of the expansion plan for the T Z Osborne WRF However, the expansion of the WRF is needed in order to allow the City to
transfer all flow that is currently treated at the North Buffalo Creek WRF to the T Z Osborne WRF, maintaining the current total capacity of the two
WRFs Development is not anticipated to be induced by the proposed project
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 subbed facility
No wastewater will be generated by the proposed project
Page 9 of 10
PCN Form — Version 14 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 ❑X No
habitat?
5b Have you checked with the USFWS concerning Endangered Species Act
❑x Yes ❑ No
impacts?
5c If yes, Indicate the USFWS Field Office you have contacted
Raleigh
5d What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical
Habitat?
The impact areas were assessed for the presence of habitat that would support the endangered species listed as potentially occurring in Guilford
County, none was identified USFWS did not identify any Critical Habitat areas or express concern relative to a known population of an endangered sp
6. Essential Fish Habitat (Corps Requirement)
6a Will this project occur in or near an area designated as essential fish habitat?
❑ Yes ❑X No
6b What data sources did you use to determine whether your site would impact Essential Fish Habitat?
The online mapper of EFH was reviewed during the development of the EA, for which a FONSI has been issued
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 ❑X 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?
Files with the State Historic Preservation Office and the Office of State Archaeology were reviewed A FONSI has been issued for the project
8. Flood Zone Designation (Corps Requirement)
8a Will this project occur in a FEMA- designated 100 -year floodplain?
® Yes ❑ No
8b If yes, explain how project meets FEMA requirements
Permanent modifications to the floodplain will be minimal A no -rise certification was prepared for the protect and submitted to the City
8c What source(s) did you use to make the floodplain determination?
The State - provided HEC -2 model was used for the evaluation
Steven D Drew
l
Applicant/Agent's Printed Name
Date
pplicant/Agent's Signature
(Agent's ignature is valid only if an authorization
letter from the applicant is DrnvtrJAfJ
Page 10 of 10

Additional Information
T.Z. Osborne WRF Expansion and Upgrades
B.-3d. In response to the Jordan Lake Nutrient Management Strategy,, the City of•Greensboro is
decommissioning the North Buffalo Creek WRF and expanding the T.Z. Osborne WRF from 40 to 56 mgd.
The expansion and upgrades to the T Z Osborne facility and the decommissioning of the North Buffalo
Creek WRF are being performed to more reliably and economically meet permit limits An increase in
total permitted discharge capacity for the City is not required for the. proposed project.
B 3e With the exception of upgrades /replacement of the NPDES discharge conveyance pipe, the
proposed project will occur entirely within the bounds of the fenced portions of the T Z Osborne WRF
To.accommodate the increased discharge associated,with the expansion of the T.Z. Osborne WRF, a new
discharge pipe will" be, constructed adjacent to the existing discharge pipe Installation of the new
discharge pipe will be accomplished via open cut. `The existing head and wing walls at South Buffalo
Creek associatedwith the existing discharge pipe will be modified to accommodate the new discharge
pipe Sediments that have collected around the outfall in South Buffalo Creek will be excavated. Riprap
is proposed to be placed in'the stream bed at the outfall to protect the "stream from further
degradation, including erosion due to the volume of proposed effluent discharge Equipment
anticipated to be used during the proposed upgrades to the WRF include backhoes, front -end loaders,
bulldozers, dump trucks, and'cranes
B 6b This permit application is relative to Package 3 of the proposed project. Package 1 includes peak
flow improvements and decommissioning North Buffalo Creek WRF Package 2 includes upgrades to the
treatment process to achieve the proposed hydraulic capacity,, and major electrical improvements=
Package 3 includes upgrades and expansion of the effluent filters, disinfection systems, alum feed
chemical system, and scum handling systems.
D.1a. Avoidance of all impacts is possible only with a no -build alternative. The no -build alternative does
not meet the need of the project As many components of the project as,is feasible have been sited
away from Jurisdictional areas. Grading around the proposed chlorine contact tank and cascade aerator -
is designed at 3:1 slopes to minimize the fill in the adjacent wetland and the 100 -year flood plain The
installation corrido -r for the proposed new discharge pipe has been designed to be as narrow as,feasible
to accommodate construction activities.
D 1b Impacts to the stream and wetlands during construction will be limited td'the extent feasible by
performing as much work as is possible from upland areas and the banks of the stream. All in- stream
work will be performed in dry stream conditions, as South Buffalo Creek will be diverted away from the
in- stream construction areas via cofferdams to protect the waters from inadvertent pollution during
construction The disturbed`areavwill be returned to original grade and elevation, and areas above the
Ordinary High Water Mark will be seeded with a native seed mix within 90 days of, the completion of the
project.

FINDING OF NONSIGNIFICANT IMPACT AND EN IRMENTAL,ASSESSMENT
CITY OF GREENSBORO — TZ OSBORNEWASTEWATER -_ TREATMENMPL=ANT °EXPANSION'
Pursuant io the requirements of the North Carolina Environmental Policy Act (N:C.G -,S..§ 113A =1, etseq.),
an environmental assessment (EA) has beemprepared for the:proposed expansion of The City,of
Greensboro!s T.Z. Osborne Wastewater Treatment.Plant(WWTP )from =40�fo >S6- ihillion ,,gallons per day
.(mgd). This project will also-,decommission the 16 mgd North'Buffalo,Credk WWTP. The,proposed project -
will not,merease the total wastewater treatment capacity for - the City,,,nor'will,iNncfease the-geograplucal
service area beyond the current plannmg,lirmts. Expansion �of,the,WWTP will=require a biological nutrient
removal upgrade to comply with the Jordan Lake Rules -and- adding,`new`infrastructure on the.WWTP
property to accommodate the expansion to 56 mgd. Minor modifications will�be'requi'red•at'the North
Buffalo Creek WWTP site,, including a new transfer pump to=accommodate the peak hydraulic throughput,
the removal of,some existing equipment from - buildin gs arid'process tankage,,and conversion of some
,tankage to influent flow equalization. Effluent from,the expanded�:T_ .,b bomie,WWTP will -be discharged to
South Buffalo Creek.
Five. alternatives for the treatment and discharge of the - increased wastewater, flows were considered =in. the
EA 1) no action, 2) nutrient removal upgrades with existing,surface•water, discharges =to North and South
Buffalo Creeks, 3) land application, 4) reuse spray irrigation; and 5) expanded surface water= discharge to
South Buffalo Creek. Upon consideration and evaluation,of =each,alfernatiV the,fifth alternative was found'
to be the most viable
Direct .impacts have been avoided and minimized to the= extent :practicable =during project - planning, and
design. There will not 'be any significant permanent direct negative impacts on existing topography or
floodplams; soils, land use, prime or unique agncultural ;lands; pubhe lah& and«seeriuc, reereational,,and
state natural areas; archaeological or historical resources; air quality; groundwater; shellfish,or fish -and their
habitats, or wildlife. Temporary direct impacts are expected,tobexmimmal and,associated with construction
of the proposed infrastructure (e g , temporary increases in runoff and sedimentatron,,ndise.levels, and,dust m
the immediate vicinity of the construction area) These direc(,- impacts will be 'immunized to the extent
practicable using best management practices (BMPs) specified in an, Erosion and, Sediment Control Plan.
Direct impacts'to water-quality and aquatic -fauna and,,habitat will,also -be rriiniinrzed by these erosion control
measures. A modification to the WWTP -'s air permit will be- required to accommodate,a_new,emer_ "gency
generator;,however, no, long -term detrimental impacts to air =quality =(e.g:, noxious',odors) will,occui from the
plant capacity increase There will be an,increase in noise level,in the,vicin*,of >the T Z Osborne WWTP
duririg'construction Following construction, operation of the,ekparided; facility will<not `result in a'neghble
increase in local noise level s, other ,than�periodic,operation,of the,.emergency' generators Two,small,- forested
wetland areas,, totaling less than one - quarter of an acre,m, size; may be--impacted by construction of the,
parallel, - outfall line to South Buffalo Creek;ehowever, this d sturbaiice,'will ' be zcontained to'the =WWTP
property South Buffalo Creek has assimilative capacity fort an increase `,in effluent discharge withoui
detrimental environmental impact to water quality as �a result of thepproject.3he proposed projectahould also
not 'result to the 'introduction of any toxic substances during either, the 'construction or operation of the
facility
Secondary and cumulative environmental impacts may.=result from'this,'project and are outlined,m �theEA
,State and`local programs to mitigate such impacts -in the are described in ,detail within the -EA
and include- land -use planning, open space preservation ,,stormwater�programs, floodplain management; and
drought response measures
Based on the findings ofthe.EA, the impact avoidance %rrutigation measures,contained,therein; and review +by
,governmental agencies, the Didisiomof Water Quahty,has,concluded`th'at the,`p'roposedzproj'ect'will noi4esulf
yin significant,impacts to the environment. This °EA =and Finding;of No"Significaint ImWact,(FNSI ),are
prerequisites for the, issuance, of Divrsion,of Water ,Quality'permrts`nece'ssary for the project's construction

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