NC0024325_Regional Office Historical File Pre 2016

Mickey, Mike
From: Osborne, Ed <[e-mail]>
Sent: Friday, November 20, 2015 8:19 AM
To: Mickey, Mike
Subject: NB status City of Greensboro
We put aeration 3 and sandfilter 4 is service. We lost two of our 5 TZO pumps so pray for little rain till we get them fixed.
Thanks
Ed Osborne, Plant Supervisor
City of Greensboro
2199 White Street
Greensboro, NC 27405
PO Box 3136, Greensboro, NC 27402-3136
Phone: [phone]
www.greensboro-nc.gov
Please note that email sent to and from this address is subject
to the North Carolina Public Records Law and maybe disclosed to third parties.

T.Z. Osborne WWTP — 2350 Huffine Mill Road.
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North Buffalo WWTP: 2199 White Street

North Carolina Department of Environment and Natural Resources
Pat McCrory
Governor
April 29, 2015
Mr. Steven Drew, Director
Water Resources Department
City of Greensboro
P.O. Box 3136
Greensboro, NC 27402-3136
SUBJECT: Compliance Evaluation Inspection
City of Greensboro - North Buffalo WWTP
NPDES Permit No. NCO024325
Guilford County
Dear Mr. Drew:
Donald van der Vaart
Secretary
On April 23, 2015, Mike Mickey of this office met with Lori Cooper and Bradley Flynt to perform a
Compliance Evaluation Inspection of the NPDES wastewater discharge from the North Buffalo WWTP. The
treatment facility was found to be compliant with the NPDES permit. The inspection findings are detailed
below and an inspection checklist is attached.
I. Permit
The NPDES permit expires June 30, 2016. At renewal, the permit will require that the monthly Discharge
Monitoring Reports (DMRs) for North Buffalo be submitted electronically per new EPA rules.
H. Self -Monitoring Program
The DMRs were reviewed for the period March 2014 through February 2015. This review found the North
Buffalo facility to be compliant with the effluent permit limit (see data summary attached). In addition, it
was noted that all sampling was performed per the frequencies specified in the permit.
III. Flow Measurement
An ultrasonic meter with parshall flume is used for reporting effluent flow values on the DMR. The meter
was last calibrated on April 2, 2015 by city staff. In addition, flow proportional composite samples are
collected from the effluent as required by the permit.
IV. Sludge Handlina and Disposal
Solids generated at the North Buffalo facility are stored in a single holding tank prior to pumping to the T.Z.
Osborne facility via a 10-inch line for dewatering and incineration.
V. Operations and Maintenance
Observations did not indicate any concerns with the operation and maintenance of the North Buffalo facility.
450 West Hanes Mill Road, Suite 300, Winston-Salem, NC 27105
Phone: [phone] \ Internet: www.ncwatergualitV.org
An Equal Opportunity\Affirmative Action Employer— Made in part by recycled paper

d
Mr. Steven Drew
Page 2
April 29, 2015
VI. Facility Site Review
Please see the attached inspection checklist for specific comments regarding system components.
Additionally, the City of Greensboro is proceeding with plans to decommission the North Buffalo treatment
facility, possibly in 2017. Wastewater collection permit No. WQ0036639 was issued by the Division on
August 7, 2013, for construction of the necessary components to transfer all of the North Buffalo flow to the
T.Z. Osborne WWTP for final treatment.
VH. Records/Reports
A comparison of the February 2015 DMR with laboratory data for pH, dissolved oxygen, total phosphorus
and selenium found that these parameters were accurately transcribed onto the monitoring report. The 2014
Annual Report was available for review and had been posted on the City of Greensboro web site.
VIII. Effluent/Receiving Waters
The system discharges into North Buffalo Creek, class "WS-V; NSW" waters in the Cape Fear River Basin.
Our office appreciates the efforts by the City of Greensboro staff to comply with the NPDES permit.
Should you have any questions concerning this report, please contact Mike Mickey or me at [phone].
Sincerely,
Sherri V. Knight, PE
Assistant Regional Supervisor
Water Quality Regional Operations Section
Division of Water Resources
cc: Elijah Williams ([e-mail])
Lori Cooper ([e-mail])
Ed Osborne ([e-mail])
Martie Groome ([e-mail])
Central Files

t4F
Permit: NCO024325 Owner - Facility: North Buffalo Creek WWTP
Inspection Date: 04/23/2015 Inspection Type: Compliance Evaluation
Permit
Yes No NA NE
(If the present permit expires in 6 months or less). Has the permittee submitted a new
❑
❑
0
❑
application?
Is the facility as described in the permit?
0
❑
❑
❑
# Are there any special conditions for the permit?
❑
0
❑
❑
Is access to the plant site restricted to the general public?
M
❑
❑
❑
Is the inspector granted access to all areas for inspection?
M
❑
❑
❑
Comment: A review of the North Buffalo monthly' Discharge Monitorinq Reports
(DMRs) for the period
March 2014 through February 2015 found the facility to be compliant with the NPDES
permit
limits and monitoring requirements.
The current target date for decomissioning of the North Buffallo WWTP is mid-2017. All flow
will be transferred to the T.Z. Osborne facility for treatment. In preparation, permit No.
WQ0036639 was issued 8/7/13 to convert aeration basin #5 to a 2.0 MG EQ basin and to
add a sixth 13.5 MGD transfer pump (the sixth pump is installed but not operable vet).
Operations & Maintenance Yes No NA NE
Is the plant generally clean with acceptable housekeeping? M ❑ ❑ ❑
Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable ❑ ❑ ❑
Solids, pH, DO, Sludge Judge, and other that are applicable?
Comment: The treatment system consists of the following:
three mechanical bar screens, aerated
grit
removal influent pump station four primary setting tanks four aeration basins, five
secondary clarifiers four tertiary sand filters effluent flow measurement, chlorination,
contact tank w/reaeration and dechlorination.
Record Keeping
Yes No NA NE
Are records kept and maintained as required by the permit?
M
❑
❑
❑
Is all required information readily available, complete and current?
0
❑
❑
❑
Are all records maintained for 3 years (lab. reg. required 5 years)?
M
❑
❑
❑
Are analytical results consistent with data'reported on DMRs?
M
❑
❑
❑
Is the chain -of -custody complete?
M
❑
❑
❑
Dates, times and location of sampling
Name of individual performing the sampling
Results of analysis and calibration
Dates of analysis
Name of person performing analyses
Transported COCs
Are DMRs complete: do they include all permit parameters?
❑
❑
❑
Page# 3

Permit: NCO024325
Inspection Date: 04/23/2015
Owner - Facility: North Buffalo Creek WWTP
Inspection Type: Compliance Evaluation
Record Keeping
Has the facility submitted its annual compliance report to users and DWQ?
(If the facility is = or > 5 MGD permitted flow) Do they operate 24/7 with a certified operator
on each shift?
Yes No NA NE
■ ❑ ❑ ❑
❑ ❑ ❑
Is the ORC visitation log available and current?
0
❑
❑
❑
Is the ORC certified at grade equal to or higher than the facility classification?
0
❑
❑
❑
Is the backup operator certified at one grade less or greater than the facility classification?
0
❑
❑
❑
Is a copy of the current NPDES permit available on site?
M
❑
❑
❑
Facility has copy of previous year's Annual Report on file for review?
0
❑
❑
❑
Comment: A comparison of the February 2015 DMR with the laboratory data for pH, dissolved oxxgen,
total _phosphorus and selenium found that these parameters were accurately transcribed on
the monitoring report. The TZ Osborne Laboratory staff collects all effluent field
parameters
(D.0., PH, temperature,and total residual chlorine).
Bar Screens
Yes No NA NE
Type of bar screen
a.Manual
❑
b.Mechanical
Are the bars adequately screening debris?
M
❑
❑
❑
Is the screen free of excessive debris?
0
❑
❑
❑
Is disposal of screening in compliance?
M
❑
❑
❑
Is the unit in good condition?
M
❑
❑
❑
Comment: Three mechanical screens. The collected debris are landfilled .
Pump Station - Influent
Yes No NA NE
Is the pump wet well free of bypass lines or structures?
0
❑
❑
❑
Is the wet well free of excessive grease?
M
❑
❑
❑
Are all pumps present?
0
❑
❑
❑
Are all pumps operable?
0
❑
❑
❑
Are float controls operable?
M
❑
❑
❑
Is SCADA telemetry available and operational?
M
❑
❑
❑
Is audible and visual alarm available and operational?
❑
❑
❑
Page# 4

Permit: NCO024325
inspection Date: 04/23/2015
Pump Station - Influent
Owner - Facility: North Buffalo Creek VWVTP
Inspection Type: Compliance Evaluation
Yes No NA NE
Comment: The pump station consists of two 12.5 MGD pumps to convev wastewater to the North
Buffalo facility (after decomissioning these will pump to the new 2.0 MGD EQ basin), and
five 13.5 MGD pumps that convey wastewater to the TZ Osborne facility for treatment
through a 30-inch and a 54-inch force mains. A sixth 13.5 MGD transfer pump has been
added but is not vet operable.
North Buffalo treats approximately 6.0 - 8.0 MGD. The remainder of the influent is
transferred to TZ Osborne for treatment.
Grit Removal
Yes No NA NE
Type of grit removal
a.Manual
❑
b.Mechanical
Is the grit free of excessive organic matter?
0
❑
❑
❑
Is the grit free of excessive odor?
0
❑
❑
❑
# Is disposal of grit in compliance?
0
❑
❑
❑
Comment: Two aerated qrit removal chambers.
Equalization Basins
Yes No NA NE
Is the basin aerated?
❑
0
❑
❑
Is the basin free of bypass lines or structures to the natural environment?
❑
❑
M
❑
Is the basin free of excessive grease?
❑
❑
❑
Are all pumps present?
❑
❑
❑
Are all .pumps operable?
❑
❑
M❑
Are float controls operable?
❑
❑
M
❑
Are audible and visual alarms operable?
❑
❑
M
❑
# Is basin size/volume adequate?
❑
❑
0
❑
Comment: The former circular aeration basin #5 is being converted into a new 2.0 MB EQ basin. This
basin will be utilized once North Buffalo is decomissioned.
Primary Clarifier
Yes No NA NE
Is the clarifier free of black and odorous wastewater?
0
❑
❑
❑
Is the site free of excessive buildup of solids in center well of circular clarifier?
❑
❑
0
❑
Are weirs level?
❑
❑
❑
Is the site free of weir blockage?
M
❑
❑
❑
Is the site free of evidence of short-circuiting?
M
❑
❑
❑
Page# 5

Permit: NCO024325 Owner -Facility:
Inspection Date: 04/23/2015 Inspection Type:
North Buffalo Creek WWTP
Compliance Evaluation
Primary Clarifier
Yes No NA NE
Is scum removal adequate?
E
❑
❑
❑
Is the site free of excessive floating sludge?
S
❑
❑
❑
Is the drive unit operational?
N
❑
❑
❑
Is the sludge blanket level acceptable?
❑
❑
❑
Is the sludge blanket level acceptable? (Approximately''/4 of the sidewall depth)
❑
❑
❑
Comment: Four rectangular primary clarifiers.
Aeration Basins
Yes No NA NE
Mode of operation
Ext. Air
Type of aeration system
Diffused
Is the basin free of dead spots?
❑
❑
❑
Are surface aerators and mixers operational?
❑ ❑
N
❑
Are the diffusers operational?
0 ❑
❑
❑
Is the foam the proper color for the treatment process?
0 ❑
❑
❑
Does the foam cover less than 25% of the basin's surface?
0 ❑
❑
❑
Is the DO level acceptable?
❑ ❑
❑
Is the DO level acceptable?(1.0 to 3.0 mg/1)
❑ ❑
❑
E
Comment: Four retangular aeration tanks. Polyaluminum chloride is added for phosphorus removal.
Secondary Clarifier
Yes No NA NE
Is the clarifier free of black and odorous wastewater?
0
❑
❑
❑
Is the site free of excessive buildup of solids in center well of circular clarifier?
N
❑
❑
❑
Are weirs level?
E
❑
❑
❑
Is the site free of weir blockage?
N
❑
❑
❑
Is the site free of evidence of short-circuiting?
E
❑
❑
❑
Is scum removal adequate?
0
❑
❑
❑
Is the site free of excessive floating sludge?
N
❑
❑
❑
Is the drive unit operational?
0
❑
❑
❑
Is the return rate acceptable (low turbulence)?
0
❑
❑
❑
Is the overflow clear of excessive solids/pin floc?
E
❑
❑
❑
Is the sludge blanket level acceptable? (Approximately''/4 of the sidewall depth)
❑
❑
❑
Comment: Five circular secondary clarifiers.
Page# 6

Permit: NCO024325 Owner - Facility:
North Buffalo Creek WWTP
Inspection Date: 04/23/2015 Inspection Type:
Compliance Evaluation
Solids Handling Equipment
Yes No NA NE
Is the equipment operational?
0
❑
❑
❑
Is the chemical feed equipment operational?
❑
❑
❑
❑
Is storage adequate?
0
❑
❑
❑
Is the site free of high level of solids in filtrate from filter presses or vacuum filters?
❑
❑
❑
Is the site free of sludge buildup on belts and/or rollers of filter press?
❑
❑
0
❑
Is the site free of excessive moisture in belt filter press sludge cake?
❑
. ❑
0
❑
The facility has an approved sludge management plan?
0
❑
❑
❑
Comment: Primary and waste activated sludge is stored in a single gravity
thickener/holding tank
prior
to pumping to TZO via a 10-inch force main for final disposal by
incineration. [Note: this
10-inch line will be abandoned shortly due to the highway construction. Solids will then be
pumped via the 54-inch line to the TZO influent./
Filtration (High Rate Tertiary)
Type of operation:
Is the filter media present?
Is the filter surface free of clogging?
Is the filter free of growth?
Is the air scour operational?
Is the scouring acceptable?
Is the clear well free of excessive solids and filter media?
Comment: Four traveling bridge tertiary sand filters.
Disinfection -Liquid
Is there adequate reserve supply of disinfectant?
(Sodium Hypochlorite) Is pump feed system operational?
Is bulk storage tank containment area adequate? (free of leaks/open drains)
Is the level of chlorine residual acceptable?
Is the contact chamber free of growth, or sludge buildup?
Is there chlorine residual prior to de -chlorination?
Comment: Sodium hypochlorite is fed prior to the contact tank.
De -chlorination
Type of system ?
Is the feed ratio proportional to chlorine amount (1 to 1)?
Yes No NA NE
Down flow
• ❑ ❑ ❑
• ❑ ❑ ❑
• ❑ ❑ ❑
❑ ❑ ❑ ❑
❑ ❑ ❑ ❑
❑ ❑ ❑ ❑
Yes No NA NE
■
❑
❑
❑
❑
❑
❑
■
❑
❑
❑
❑
❑
❑
■
❑
❑
❑
■
❑
❑
❑
Yes No NA NE
Liquid
❑ ❑ M ❑
Page# 7

Permit: NCO024325 Owner*- Facility:
North Buffalo Creek wwTP
Inspection Date: 04/23/2015 Inspection Type:
Compliance Evaluation
De -chlorination
Yes No NA NE
Is storage appropriate for cylinders?
0
❑
❑
❑
# Is de -chlorination substance stored away from chlorine containers?
0
❑
❑
❑
Are the tablets the proper size and type?
❑
❑
0
❑
Comment: Sodium bisulfite is fed manually.
Are tablet de -chlorinators operational?
Number of tubes in use?
Comment:
❑ ❑ M ❑
Effluent Sampling
Yes No NA NE
Is composite sampling flow proportional?
M
❑
❑
❑
Is sample collected below all treatment units?
M
❑
❑
❑
Is proper volume collected?
0
❑
❑
❑
Is the tubing clean?
❑
❑
❑
# Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees
0
❑
❑
❑
Celsius)?
Is the facility sampling performed as required by the permit (frequency, sampling type ❑ ❑ ❑
representative)?
Comment: Flow Dr000rtioned comDosite samples are collected. The refrigeration temperature was
approximately 5 degrees.
Flow Measurement - Effluent
Yes No NA NE
# Is flow meter used for reporting?
M
❑
❑
❑
Is flow meter calibrated annually?
0
❑
❑
❑
Is the flow meter operational?
0
❑
❑
❑
(If units are separated) Does the chart recorder match the flow meter?
❑
❑
0
❑
Comment: The flow meter was last calibrated on 4-2-15 by city staff.
Effluent Pipe
Yes No NA NE
Is right of way to the outfall properly maintained?
❑
❑
❑
Are the receiving water free of foam other than trace amounts and other debris?
M
❑
❑
❑
If effluent (diffuser pipes are required) are they operating properly?
❑
❑
0
❑
Comment: The discharge is to N. Buffalo Creek, class "WS-V; NSW' waters. Three stormwater
pumps are located near the contact tank to remove accumulated stormwater from the
WWTP which is diked.
Page# 8

Permit: NC0024325 Owner -Facility: North Buffalo Creek WWTP
Inspection Date: 04/23/2015 Inspection Type: Compliance Evaluation
Upstream / Downstream Sampling Yes No NA NE
Is the facility sampling performed as required by the permit (frequency, sampling type, and ❑ ❑ ® ❑
sampling location)?
Comment: The instream monitoring requirements of the permit are waived since Greensboro is a
member of the Upper Cape Fear River Basin Association.
Standby Power
Is automatically activated standby power available?
Is the generator tested by interrupting primary power source?
Is the generator tested under load?
Was generator tested & operational during the inspection?
Do the generator(s) have adequate capacity to operate the entire wastewater site?
Is there an emergency agreement with a fuel vendor for extended run on back-up power?
Is the generator fuel level monitored?
Comment: A Duke Power owned and maintained generator is located on -site.
Yes No NA NE
Page# 9

w
DMR Summary
City of Greensboro - North Buffalo VVVVTP
NPDES Permit No. NCO024325
March 2014- February 2015
Parameter
Monthly Avg.
Permit Limit
Monthly Avg. Limit
Violations per DMR
Weekly Avg.
Permit Limit
Weekly Avg. Limit
Violations per DMiR
Flow (MGD)
16.0
None
-
NA
CBOD (mg/L)
(8.0 / 16.0)*
None
(12.0 / 24.0)*
None
TSS (mg/L)
30.0
None
45.0
None
NH3-N (mg/L)
(4.0 / 8.0)*
None
(12.0 — 24.0)*
None
Fecal (#/100 ml)
200
None
400
None
D. Oxygen (mg/L)
-
NA
> 6.0 **
None
pH (S.U.)
-
NA
(6.0 — 9.0) range
None
T. Chlorine (ug/L)
-
NA
17.0***
None
T. Mercury (ug/L)
0.012
NA
0.036****
None
Chronic Toxicity
P/F @ 90%
None
-
NA
*(Summer / Winter limits)
**Daily Average Limit.
***Daily Maximum Limit. TRC values reported below 50 ug/L are considered compliant.
****Daily Maximum Limit.
Nutrient Limits:
2014 Combined Delivered Load for the N. Buffalo & T.Z. Osborne POTW's.
Parameter
Permit Limit -Total Combined
Delivered Load (lb/yr)
Reported - Combined Delivered
Loadper 2014 Annual Summary
Total Nitrogen
401,073 (effective in 2021)
644,917 lb/yr.
Total Phosphorus
49,299 (effective 1/l/2010)
35,892 lb/yr.

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1. ALL FACILITIES DOWNSTREAM OF TRANSFER PUMP STATION
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AND FLOW EQUALIZATION -(EXCEPT,FOR-EFFLUENT' PEMP_S)SA,
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Sa00 Glenvrood Avenue.57e 300
RzIel9h.^ 7612 �jd•[phone]
CITY OF GREENSBORO
NORTH CAROLINA
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WRF EXPANSION AND BNR UPGRADES PROJECT
NORTH BUFFALO AND T.Z. OSBORNE - PACKAGE 1
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REMARKS
DATE MARCH 2O13

Mickey, Mike
From: Scott, Michele
Sent: Tuesday, October 06, 2015 1:24 PM
To: Mickey, Mike
Subject: RE: NCO024325 - N. Buffalo WWTP / City of Greensboro
Hi Mike,
The data is now entered.
Michele
From: Mickey, Mike
Sent: Tuesday, October 06, 2015 1:20 PM
To: Scott, Michele <[e-mail]>
Subject: RE: NCO024325 - N. Buffalo WWTP / City of Greensboro
Michele —The July 2015 CBOD data for NCO024325 did not get entered into BIMS (see screen shot below). I have
attached the DMR.
Thanks, Mike.
1

20
TYPE
24,
28,
NCDENRWinston-Salem Regional Office
Division of Water Resources —Water Quality Programs
4SOVV.Hanes Mill Road, Suite 3O[\VVinstnn'Sa|em,NC271O5
E-mail correspondence toand from this address may besubject tothe North
Carolina Public Records Law and may be disclosed to third parties.
2

i
From: Scott, Michele
Sent: Monday, August 10, 2015 10:35 AM
To: Mickey, Mike <mil<[e-mail]>
Subject: RE: NC0024325 - N. Buffalo WWTP / City of Greensboro
Mike,
The data in now in BIMS.
Michele
From: Mickey, Mike
Sent: Monday, August 10, 2015 10:32 AM
To: Scott, Michele
Subject: NC0024325 - N. Buffalo WWTP / City of Greensboro
Michelle —The CBOD column on the April DMR for the North Buffalo WWTP did not get entered into the database (see
BIMS screen shot below and attached DMR). Thanks, Mile.
Per€nit Admin Region: 4" .Wiinston-Salem' 1
Facility: North Buffalo GreekV4U+sfTP Co �D`etaila_.:un jGuihfiorcE
1�ty- t i
DIvtR For Date: 05-2015 Received Date: 167107i2015 ., 'rint DTYIR
Ea ilifyRepOrCed 00 Compliant� '� Non -Compliant, a� Not�Reporteet ®Is'signed
Received Electronically ETI' `Paper Copy Received`L te_ -- Submitted gy
Effl� btu. Iaifluent` a 4M ;.f
Outfall_ 001 [ .Not'Dischargirlg
Parameter 8O91-2'-CB%�:2[t imgA.. � [✓jNoData 1
N10're'Para ms 'Approved �� ' 07131 2 15 �
j
2 . 1& --ttonthly-Avg ,
4� 20, Dailytlin ,
21
8 �;': 22 = ANIPLETYP'En C rr `
7
x
23,
2.
0
25
26,
1
28
13:
2
14
30° _
1
314
1 '.
— OALCULATED=
`hIcnthlyAvg
Daily,,Max
i zily-Min
Weekly..Avg 1
Weekly,,Avg � -
Weekly;lAvg 3, . .
Weekly�Ayg 4
3

Mickey, Mike
From: Osborne, Ed <[e-mail]>
Sent: Tuesday, October 27, 2015 7:47 AM
To: Mickey, Mike
Subject: Plant Status North Buffalo Greensboro NC
We lost aeration 3 (blown diffuser grid) and sandfilter 4 last night.
Ed OSborne, Plant Supervisor
Water Resources Department
City of Greensboro
Phone [phone]; Fax [phone]
PO Box 3136 Greensboro, NC 27402-3136
www.greensboro-nc.gov
---- ---------
Please note that email sent to and from this address is subject
to the North Carolina Public Records Law and may be disclosed to third parties.
1

Mickey, Mike
From: Osborne, Ed <[e-mail]>
Sent: Friday, July 10, 2015 8:32 AM
To: Mickey, Mike
Subject: Plant Status
We got all four sandfilters in service. One metro sludge pump is inoperatable (being repaired) and we are currently
discharging our thickened sludge to the transfer pump station wet well since our 30 inch line is leaking (to TZO). I might
have to make some operational changes if solids build up in the plant but we should be. I am hoping that most of them
will go to the TZO pumps and not enter into North Buffalo.
I am not sure if you know but our dedicated 10 inch sludge transfer line, to TZO, was abandoned due to bad pipe and we
are currently using the 30 inch line.
Ed Osborne, Plant Supervisor
Water Resources Department
City of Greensboro
Phone [phone]; Fax [phone]
PO Box 3136 Greensboro, NC 27402-3136
www.greensboro-nc.gov
Please note that email sent to and from this address is subject ,
to the North Carolina Public Records Law and may be disclosed to third parties.

Water Pollution Control System Operator Designation Form
WPCSOCC
NCAC 15A 8G.0201
Permittee Owner/Officer Name: City of C�ree_nsboyo / El'jo-h WiWckms
I -
Mailing Address: 15OX 3156
City: C re e, n S 190 1-0 State: -I Zip:17402- - 3i36 Phone #: 3-36—_'Y13­4&32-'
J_
Emait address:
Signature:
Vvi I hams (
ree.n,sborp-nc.
M
Date:
-7
71
.............................................................................................................................................
facility Name: U Permit#: ��C002-42>2-5)
County:
..............................................................................................................................................
SUBMIT A SEPARATE FORM FOR EACH TYPE SYSTEM!
Facility Type/Grade (CHECK ONLY ONE):
Biological Collection Physical/Chemical Surface Irrigation Land Application
Operator in Responsible Charge (ORC)
k5
PrintFLJI]Narne:.Va:V�iar) E. 0SbQrnC Email: &J,
Certificate Type j Grade / Number: W \N I Z 'I & Work Phone g:
jEtl
1�1 J
Signature: Z-W.,-. Date: j
"I certify that I agree to my designation as the Operator in Responsible Charge for the facility noted: I understand and will abide by the rules
and regulations pertaining to the responsibilities of the ORC as set forth in 15A NCAC 08G.0204and failing to do so can result in Disciplinary
Actions by the Water Pollution Control System Operators Certification Commission."
...................................... I ................................................................................................ I ......
Back -Up Operator in Responsible Charge (BU ORC)
Print Full Name: "Braci 16 �J. _t - T7 I y nt Email: br-CLdIel > IvntP �ree_nsboro-nc. Clpv
_j
Certificate Type Grade / Number: , VV W /�ET Aq 1 '7 1 - Work Phone#: L4 33) f1'2-&2--
Signature: 'Date: d 4_,L,�O
I certify that I agree to my C 'signation-te3a Back -tip Operator in Responsible Charge for the facility noted. I understand and will abide by the
rules and regulations pertaining to the responsibilities of the BU ORC as set forth in 15A NCAC 08G.0205 and failing to do so can result in
Disciplinary Actions by the Water Pollution Control System Operators Certification Commission."
..............................................................................................................................................
Ylall,fmv or entail the WPCSOCC, 161$ Mail Service Center, Raleigh, NC 27699-1618 Fax: [phone]
ogl to: lkiiiaii: -, iiiAiicae�ni.
Mail orfaxa ME to file Asheville
Fayetteville
Mooresville
Raleigh
appropriate Regional Office: 2090 US Hwy 70
225 Green St
610 E Center Ave
3800 Barrett Dr
Swarmanoa 28778
Suite 714
Suite 301
Raleigh 27609
Fax: [phone]
Fayetteville 28301-5043
Mooresville 28115
Fax: [phone]
Phone: [phone]
Fax: [phone]
Fax: [phone]
Phone:[phone]
Phone: [phone]
Phone: [phone]
Washington
Wilmington
Winston-Salem
943 Washington Sq?vjall
127 Cardinal Dr
450 W. Hanes Mall Rd
Washington,27889
Wilmington 28405-28,15
Winston-Salem 27105
Fax: [phone]
Fax: [phone]
Fax: [phone]
Phone: [phone]
Phone: [phone]
Phone: [phone]
Revised 05-2015,

WPCSOCC Operator Designation Form, cons.
Facility Name: tNOrth _E�-J4f c:L�o Permit#: NC-002-4325
.............................................................................................................................................
Back -Up Operator in Responsible Charge (BU ORC)
Print Full Name: Wi1�'tam �' y�Ui1�} Email:_Wi111�m•y��l����re.en.S�oro-1r1C•90`/
Certificate Type / Grade / Number: W VVIIV J § 5 (9 4 Work Phone #:
Signature: � Date:
"I certify that I agree to my designation as a Ba -up erator in Responsible Charge for -the facility noted. I understand and will abide by the
rules and regulations pertaining to the responsibilities of the BU ORC as set forth in 15A NCAC 08G .0205 and failing to do so can result in
Disciplinary Actions by the Water Pollution Control System Operators Certification Commission."
Back -Up Operator in Responsible Charge (BU ORC)
Print Full Name: M et-Y'i►) a Groom e,
Email: VYl Cl.ri-i 6 , 4�roome. (Do" eJ')5bOrro-nC. 9cV
Certificate Type / Grade / Number: VV VV1 . / 3 rd 36 Work Phone #: `4
Signature: —rKo-L4 A�LJ � -J Date: & - 2- 9' z0 J5
"I certify that I agree to my designation as a Back-up Operator in Responsible Charge for the facility noted. I understand and will abide by the
rules and regulations pertaining to the responsibilities of the BU ORC as set forth in 15A NCAC 08G .0205 and failing to do so can result in
Disciplinary Actions by the Water Pollution Control System Operators Certification Commission."
Back -Up Operator in Responsible Charge (BU ORC)
Print Full Name: Email:
Certificate Type / Grade / Number:
Signature:
Work Phone #:
Date:
"I certify that I agree to my designation as a Back-up Operator in Responsible Charge for the facility noted. I understand and will abide by the
rules and regulations pertaining to the responsibilities of the BU ORC as set forth in 15A NCAC 08G .0205 and failing to do so can result in
Disciplinary Actions by the Water Pollution Control System Operators Certification Commission."
.............................................................................................................................................
Back -Up Operator in Responsible Charge (BU ORC)
Print Full Name: Email:
Certificate Type / Grade / Number:
Signature:
Work Phone #:
Date:
"1 certify that I agree to my designation as a Back-up Operator in Responsible Charge for the facility noted. I understand and will abide by the
rules and regulations pertaining to the responsibilities of the BU ORC as set forth in 15A NCAC 08G .0205 and failing to do so can result in
Disciplinary Actions by the Water Pollution Control System Operators Certification Commission."
Revised 05-2015

Mickey, Mike
From: Groome, Martie <[e-mail]>
Sent: Monday, July 06, 2015 12:24 PM
To: SVC DENR.certadmin
Cc: Osborne, Ed; Flynt, Bradley; Young, William; Groome, Martie; Mickey, Mike; Basinger,
Corey; Williams, Elijah; Borchers, Mike
Subject: Revised ORC Designation form for City of Greensboro North Buffalo POTW NCO024325
Attachments: NB ORC Designation Form REV 7-6-2015.pdf
To Whom It May Concern:
Attached please find a scan of the original Water Pollution Control System Operator Designation Form for the City of
Greensboro North Buffalo POTW NC0024325. As per the instructions, a copy was also mailed to the Winston-Salem
Regional Office.
If you have questions or need additional information, please feel free to contact me by phone or email.
Martie Groome
Martie Groome, Laboratory and Industrial Waste Section Supervisor
Water Resources Department
City of Greensboro
Phone:[phone] Fax:[phone]
Box 3136, Greensboro NC 27402-3136
www.greensboro-nc.gov
Please note that email sent to and from this address is subject
to the North Carolina Public Records Law and may be disclosed to third parties.

Mickey, Mike
From: Osborne, Ed <[e-mail]>
Sent: Monday, May 18, 2015 5:52 PM
To: Mickey, Mike
Subject: Plant status of North Buffalo
Final 3 now in service. Final one still out as usual to help with MCRT and sandfilter 1 still out.
Have a good day
Ed Osborne, Plant Supervisor
Water Resources Department
City of Greensboro
Phone [phone]; Fax [phone]
PO Box 3136 Greensboro, NC 27402-3136
www.greensboro-nc.gov
------------------------------------------------------
Please note that email sent to and from this address is subject
to the North Carolina Public Records Law and may be disclosed to third parties.

GREENS114ORC3.
. P-q
City of Greensboro
Water Resources Department
The Clean Water Act of 1999 (House Bill 1160) requires all entities that own or operate wastewater collection
and treatment systems to make an annual report available to their customers. The report must detail how a system
operates, how well it performed during the year, what violations occurred, and other information. This report is
produced in compliance with these requirements and covers the calendar year January - December 2014. This
report is available to all customers, and is submitted to the North Carolina Department of Environment and Natural
Resources. Included in this report is a table listing the spills and overflows that occurred during the 2014 year.
The City of Greensboro Water Resources Department operates two water reclamation plants and a
sewage collection system that collects and transports the sewage to these two plants; some transfer
of sewage occurs between the two plants. The North Buffalo Facility and the T.Z. Osborne Facility
are permitted to process up to 16 and 40 million gallons of wastewater per day, respectively.
S w r. , -^ ate, t • '`� is f-• � � # .% � € ::
The sewage collection and water reclamation system of the City of Greensboro begins with approximately 103,480
connections that serve homes, commercial establishments, and industries. Every day an average of 31 million gallons
of sewage is generated in our homes and industries that must be collected, transported, and treated to very stringent
standards before it is released back into our environment (in our streams). This service is provided by the City's Water
Resources Department and is funded almost entirely from the user charges that are paid monthly by our customers.
The City of Greensboro operates a sewage collection system comprised of 1,612 miles of gravity line,
39,562 sewer manholes, 48 pump stations, and 90 miles of pressurized sewage force main. The system is
subject to many rules and regulations. All spills and overflows of any volume that reach surface water must
be reported to the State. Spills that exceed 1,000 gallons must also be reported to local news media outlets.

The City of Greensboro's Treatment Plants operate under the
National Pollutant Discharge Elimination System (NPDES)
Permits. These are highly complex permits that include
monitoring requirements and discharge limits. The permits can
be viewed at our treatment plants upon request. Compliance
with these permits require our laboratory staff to conduct over
10,500 tests per year. Any one of these tests may result in a
value that causes us to violate the limits of the NPDES Permit.
Wastewater treatment plant operators have no control over some
limited parameters (selenium and mercury) other than through
regulating what industry and households can discharge to the
sewers through the Industrial Waste and Pretreatment Program.
During 2014 the Water Resources Department treated 11.4
billion gallons of wastewater and returned it to our streams.
We are proud of the outstanding performance of these facilities
made possible by the dedicated efforts of the professionals
who operate, maintain and conduct tests for these plants. All
NPDES permit violations are reported to the State of North
Carolina to ensure compliance with all reporting regulations.
A list of violations that occurred during the 2014 calendar year
is at the end of this report (Tables 1-3). There were no detected
environmental impacts from any of these permit violations.
The City of Greensboro Water Reclamation facilities are tertiary treatment plants that utilize activated sludge
processes. Solid waste (biosolids) generated in these processes is disposed of by a fluidized bed incinerator.
ewe •.k # � ��' ,• =a:, §� ,'4. �� k'. 5. .� �, a� .E
To prevent undue introduction of fats, oils, and grease (FOG)
into the wastewater collection system, the City of Greensboro
Water Resources Department is implementing a FOG Policy
designed to educate and enforce the proper disposal of FOG
within City jurisdictions. The FOG policy educational and
enforcement programs are intended for all customers (Food
Service Establishments, Nursing/Group homes, Schools/
Cafeterias, Industries, and Residents) that discharge wastewater
into the City of Greensboro Sanitary Sewer System with the aim
of mitigating or eliminating Sanitary Sewer Overflow (SSOs) that
are grease related. The City of Greensboro FOG policy requires
all commercial and food service establishments to install and
regularly maintain an appropriately sized grease trap or interceptor.

y
System improvements
underway. This $100 million four -phase
The Greensboro Water Resources Department is proud that given
the capacity of our treatment plants and the age of our collection
system, our permit departures have been minimal. However, we
recognize however, that in the changing climate of environmental
concern, total compliance is demanded by the public.
In an effort to continue to improve our wastewater collection
system and meet the demands of new regulations various
capital improvement projects have been initiated. To
prepare for nutrient reduction requirements of the Jordan
Lake Rules, upgrades that will provide a higher level
of treatment for the T.Z. Osborne facility are currently
construction project will be completed in 2020.
An on -going cleaning and inspection program to monitor and maintain our sewer systern
continues to be bolstered with the introduction of new equipment including two rapid assessment
acoustic testing devices. New inspection equipment, along with an aggressive program to rehabilitate
old infrastructure that exhibit signs of deterioration has allowed continual improvement of the system.
The annual Sewage and Water Reclamation Plant Report is
available at the following City of Greensboro locations: the
Vance H. Chavis Lifelong Learning Branch Library, McGirt-
Horton Branch Library, Central Library, Melvin Municipal
Office Building (MMOB), all Water Resources Facilities,
and also the City's website: www.greensboro-nc.gov/water.
Customers will also receive notification concerning
availability in the At Your Service quarterly newsletter, that
are distributed in water and sewer bills from April to May of
2015. Additional copies of the report may be requested by
calling the City Contact Center at (336) 373-CITY (2489).
• Significant Industrial User (SIU) Permit Information
• Sewer use and Pretreatment Ordinance
• Significant Industrial Users Listing
• Industrial Waste Section Contact Information
• Useful State/Federal SIU Permit Resources

From January 1st — December 31st of 2014, the City of Greensboro had 71 Sanitary Sewer Overflows
(SSOs). SSOs occur when problems in the system cause sewage to emerge from manhole covers, service
cleanouts or plumbing fixtures. Grease was the number one contributing factor of SSOs during 2014.
Other issues reported were debris in line, pump station equipment failure, roots, and pipe failure breaks.
Debris in the collection system can range from rags, flushable wipes, rocks, sticks, feminine
hygiene products, etc., which are all illegal discharges when dumped into the sanitary
sewer system. Listed below in Table 1 & 2 are the compliance and violation records for
both wastewater treatment plants. Table 3 list the SSO's that were 1,000 gallons or more.
The City has an ongoing Fats, Oils and Grease Program to educate residents and business
owners regarding the need to keep grease out of the sewer system, as well as a comprehensive
maintenance program. With the help of each- sewer customer using the sewer system
responsibly, the City can continue to reduce the number of SSO occurrences each year.
■
Table 1
Table 2
T.Z. Osborne -Permit #NC0047384
March
Ammonia
1
Ammonia
April
CBOD
IF 3 I
CBOD
May
F ____ IF
CBOD-
2 - I�
T CBOD
Note: There were no environmental impacts noted for the above violations.

Table 3
Sewage Spills from Collection System Exceeding 1,000 Gallons
Sewage Collection System- Permit #WQCS00006
I
City of WQCS00006 F2/22/2014 1,500 Brush Creek 7701 Airport Grease
Greensboro Center Dr.
City 0
Greensboro
WQCS00006
3/1/2014
5,200
Alamance
1035 Neese Rd.
US Power Failure
City of
Greensboro
WQCS00006
3/8/2014
8,000
North
guffalo
3240 Gatesville
Rd.
US Power Failure
City of
Greensboro
WQCS00006
6/3/2014
15,000
North
Buffalo
2105 Drexel Rd.
Broken Main
i
City of
Greensboro
WQCS00006
9/3/2014
2,000
North
Buffalo
2199 White St.
Air Valve
Malfunction
City of
Greensboro
WQCS00006
10/7/2014
13,000
Little Creek
5936 Burlington
Rd.
Broken Main
i
City of
Greensboro
WQCS00006
12/26/2014
1,400
Beaver
Creek
3652 S. East
School Rd.
US Power Failure j
i
The following are the professionals designated by the state as the "Operators in Responsible Charge" (ORC) of the
respective systems and permits for the systems:
North Buffalo Water Reclamation Facility Permit No. NC0024325, ORC Nathan Osborne, [phone]
T.Z. Osborne Water Reclamation Facility Permit No. NC0047384, ORC Lori Cooper, (336) 3734502
Sewage Collection System, Permit No. WQCS00006, ORC Mark Malloy, [phone]
WATER RESOURCES ADMINISTRATION: 336-373-2055
T. Z. OSBORNE WATER RECLAMATION: 336-373-7740
NORTH BUFFALO WATER RECLAMATION: 336-373-5913
www.greensboro-nc.gov/water

A.(1.) EFFLUENT LIMI.1- IONS AND MONITORING REQ-,REMENTS - Outfall 001
During the period beginning June 1, 2013 and lasting until expiration, the Permittee is authorized to
discharge treated wastewater from Outfall 001. Such discharges shall be limited and monitored by the
Permittee as specified below:
EFFLUENT
CHARACTERISTICS
EFFLUENT'LIMITATION_S
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample Type
Sample Location -.
Flow
16.0 MGD
Continuous
Recording
Influent or Effluent
Total Monthly Flow (MG)
Monitor & Report
Monthly
Rec. or Calc.
Influent or Effluent
CBOD, 5-day, 20°C (Summer)2
8.0 mg/L
12.0 mg/L
2/Week
Composite
Influent & Effluent
CBOD, 5-day, 20°C (Winter)2
16.0 mg/L
24.0 mg/L
2/Week
Composite
Influent & Effluent
Total Suspended SolidS2
30.0 mg/L
45.0 mg/L
2/Week
Composite
Influent & Effluent
NH3 as N (Summer)
.4.0 mg/L
12.0 mg/L
2/Week
Composite
Effluent
NH3 as N (Winter)
8.0 mg/L
24.0 mg/L
2/Week
Composite
Effluent
Fecal Coliform
(geometric mean)
200/100ml-
400/100ml-
2/Week
Grab
Effluent
Dissolved Oxygen 3
Daily
Grab
Effluent
Temperature (°C)
Daily
Grab
Effluent
pH 4
Daily
Grab
Effluent
Total Residual Chlorines
17.0 pg/L
Daily
Grab
Effluent
TO
Monitor & Report (mg/L)
Weekly
Composite
Effluent
NO3-N + NO2-N
Monitor & Report (mg/L)
Weekly
Composite
Effluent
Total Nitrogen, TN 6
Monitor & Report (mg/L)
Weekly
Composite
Effluent
TN Load' 8 [parameter codes]
Monitor & Report ) Q Monitor & Report (lb/yr)[QY600]
Annthly
Annually
Calculated
Effluent
Total Phosphorus, TP
Monitor & Report (mg/L)
Weekly
Composite
Effluent
TP Load' 8 [parameter codes]
Monitor & Report ) Monitor & Report (lb/yr)[QY665]
Annually thly
Calculated
Effluent
Total Cyanide 9
Quarterly
Grab
Effluent
Total Mercury 10
0.012 pg/L
0.036 pg/L
Quarterly
Grab
Effluent
Fluoride
Quarterly
Composite
Effluent
Total Copper
Quarterly
Composite
Effluent
Total Zinc
Quarterly
Composite
Effluent
Chronic Toxicity 11
Quarterly
Composite
I Effluent
Effluent Pollutant Scan
Monitor & Report
See Special Condition A.(4.)
Dissolved Oxygen 12
12
Grab
U, Dl, D2, D3
Fecal Coliform 12
12
Grab
U, Dl, D2, D3
Temperature (°C) 12
12
Grab
U, D1, D2, D3
Conductivity 12
12
Grab
U, Dl, D2, D3
All footnotes are listed on the following page.
PART I, Page 1 of 1

_ Permit No. NC0024325
Footnotes:
(Summer): April 1- October 31
(Winter): November 1- March 31
(Daily): every day on which a wastewater discharge occurs except Saturdays, Sundays, and legal
holidays unless otherwise specified by the Director.
1. U: Upstream at the influent conduit. D1: Downstream at the unimproved road 0.8 miles east of
White/Nealtown Road intersection. D2: Downstream at Rankin Mill Road. D3: Downstream in
Buffalo Creek at McCleansville Road.
2. The monthly average effluent CBOD5 and TSS concentrations shall not exceed 15 % of the
respective influent value (85% removal).
3. The daily effluent dissolved oxygen concentration' shall not be less than 6.0 mg/L.
4. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
5. The Division shall consider all effluent TRC values reported below 50 ug/L to be in compliance
with the permit. However, the Permittee shall continue to record and submit all values reported by
a North Carolina certified laboratory (including field certified), even if these values fall below 50
ug/ L.
6. TN is Total Nitrogen = TKN + NO3-N + NO2-N, where TKN is Total Kjeldahl Nitrogen, NO3-N and
NO2-N are Nitrate and Nitrite Nitrogen, respectively.
7. TN or TP Load is the mass quantity of Total Nitrogen or Phosphorus discharged in a given period
of time. See Special Condition A.(7.), Calculation and Reporting of Nutrient Loads.
8. The facility is subject to nutrient limitations as specified in Special Condition A. (2.), Combined
Limitations for Nutrients.
9. The quantitation limit for cyanide shall be 20 µg/L; levels reported below 20 µg/L shall be
considered zero for compliance purposes.
10. Effluent samples must be analyzed by an EPA -approved low level mercury analysis method.
The City can request that the mercury limits be modified once the mercury TMDL is adopted.
11. Chronic Toxicity (Ceriodaphnia) at 90 % with testing in January, April, July and October (see
Special Condition A. (3.)). TOXICITY MONITORING SHALL COINCIDE WITH METALS
MONITORING.
12. Instream monitoring requirements are waived as long as facility retains membership in the
LAORBP If�membe-r.•_shzp%s cancelled, facility will monitor 3/ Week (June -September) and 1/ Week
(October -May). Stream sampling may be discontinued at such times as flow conditions in the
receiving waters or extreme weather conditions will result in a substantial risk of injury or death to
persons collecting samples. Upon such discontinuance, stream sampling shall be resumed at the
first opportunity after the risk period has ceased.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
PART I, Page 2 of 8

Permit No.
A.(2.) 0,401MB1 t :O r LIMITATIONS FOR NUTRIENTS - Outfall C01
(a.) During the period beginning on the dates specified below and lasting until permit expiration,
the Permittee is further authorized to discharge Total Nitrogen and Total Phosphorus from the
T.Z. Osborne WWTP (NC0047384, Outfall 001) and the North Buffalo WWTP (NC0024325,
Outfall 001) subject to the following combined, delivered load limitations:
Permit I Facility
NC0047384 T.Z. Osborne WWTP
NCO024325 North Buffalo WWTP
Total Nitrogen,
Delivered (16/yr)1
Active Combined
Allocations Limit
290,375
110,698
Total Phosphorus,
Delivered (lb/'
:Active Combined
Allocations Limit
35,708
13,591
401,073 49,299 "
(effective 1/1/2016)z (effective
Footnote:
i Allocations and limits in this table are expressed as delivered loads. See Condition A.(7.) regarding
calculation of delivered loads from discharge loads.
Per the Jordan Lake Wastewater Discharge Rule (15A NCAC 02B .0270) as modified by North Carolina
Session Law 2011-394 (HB119), the annual mass Total Nitrogen limit shall be effective beginning with
calendar year 2016, unless the discharger has received by December 31, 2016, an authorization -to -construct
permit for construction, installation, or alteration of the treatment works for purposes of complying with
this limit, in which case the limit shall be effective beginning with eMendar year 201. .
(b.) Compliance with these limits shall be determined in accordance with Special Conditions A.(6.),
Annual Limits for Total Nitrogen and Total Phosphorus, and A.(7.), Calculation and Reporting
of Nutrient Loads.
(c.) Nutrient monitoring and reporting requirements are specified in Special Conditions A.(1),
Effluent Limitations and Monitoring Requirements, and A.(7.), Calculation and Reporting of
Nutrient Loads.
(d.) Pursuant to N.C. General Statute Section 143-215.1 and the implementing rules found in Title
15A of the North Carolina Administrative Code, specifically, 15A NCAC 02B.0270, and Part II, Sections B-12 and B-13 of this permit, the Division of Water Quality (Division) may reopen the
permits listed above and establish more stringent nutrient limits upon finding that such limits
are necessary to prevent the discharges from causing localized water quality impacts in the
receiving streams.
(e.) The Permittee may request that its permits be modified to rescind these combined limits and
establish individual mass discharge limits for each facility. The Division may, after written
notification to the Permittee, rescind these combined limits and establish individual mass
discharge limits for each facility if it determines that the combined limits do not support the
objectives of the Jordan Lake Nutrient Management Strategy. The Division shall provide for
public review of the proposed permit modifications and include in the permit an appropriate
schedule of compliance for the proposed nutrient limits.
PART I, Page 3 of 8

Permit No. NC0024325
A.(5.) NUTRIENT ALLOCATIONS
(a.) The following table lists the Total Nitrogen (TN) and Total Phosphorus (TP) allocations
assigned to, acquired by, or transferred to the Permittee in accordance with the Jordan Lake
nutrient management rule (T15A NCAC 02B .0270) and the status of each as of permit issuance.
For compliance purposes, this table does not supersede any TN or TP limit established
elsewhere in this permit or in the NPDES permit of a compliance association of which the
Permittee is a Co-Permittee Member.
Total Nitrogen Allocation
ALLOCATION AMOUNT 1-
ALLOCATION
TYPE :
-SOURCE
DATE
STATUS
Delivered
Discharge'
(Ib/yr) ;
(Ib/yr)
Base
Assigned by Rule
(T15A NCAC 02B .0270)
8/11/09
110,698
257,438
Active,
TOTAL
110,698
257,438
j Active
Footnote:
1 Nitrogen Transport Factor = 43%
Total Phosphorus Allocation
-
ALLOCATION AMOUNT- `
ALLOCATION
TYPE
SOURCE
DATE
r"
STATUS
'`s"
Delivered
=
Discharge ... .
Base
Assigned by Rule
8/11/09
13,591
32,359
Active
(T15A NCAC 02B .0270)
TOTAL
13,591
32,359
Active
Footnote:
1 Phosphorus Transport Factor = 42%
(b.) Any addition, deletion, or modification of the active allocation(s) listed above (other than to
correct typographical errors) or any change of allocation to 'active' status shall be considered a
major modification of this permit and shall be subject to the public review process afforded
such modifications under state and federal rules.
PART I, Page 6 of 8

Permit No. NC002432,
A.(6.) ANNUAL LIMITS FOR TOTAL NITROGEN AND TOTAL PHOSPHORUS
(a.) Total Nitrogen (TN) and Total Phosphorus (TP) allocations and load limits for NPDES \
dischargers in the Jordan Lake watershed are annual loads and apply on a calendar year basis.\.
(b.) For any given calendar year, the Permittee shall be in compliance with the annual TN (or TP)
Discharge Load limit in this Permit if:
(i.) the Permittee's annual TN (or TP) Discharge Load is not greater than the effective limit, or
(ii.) the Permittee is a Co-Permittee Member of a compliance association.
(c.) The TN (or TP) limit in this Permit may be modified as the result of allowable changes in the
Permittee's allocation.
(i.) Allowable changes include those resulting from purchase of TN (or TP) allocation from an
authorized mitigation banker, the Ecosystem Enhancement Program, or other source
allowed under applicable regulations; purchase, sale, trade, or lease of allocation between
the Permittee and other dischargers; regionalization; and other transactions approved by
the Division.
(ii.) The Permittee may request a modification of the TN (or TP) limit in this Permit to reflect
allowable changes in its allocation(s).
(A) Upon receipt of timely and proper application, the Division will modify the permit as
appropriate and in accordance with state and federal program requirements.
(B) Changes in TN (or TP) limits become effective on January 1 of the year following
permit modification. The Division must receive application no later than August 31
for changes proposed for the following calendar year.
(iii.) Any requests for modification should be sent to:
NCDENR/ DWQ/ NPDES Programs
Attn: Jordan Lake Watershed Coordinator
1617 Mail Service Center
Raleigh, NC 27699-1617
(d.) If the Permittee is a member and co-permittee of an approved compliance association on
January 1 of a given year, its TN and TP discharges during that year are governed by that
association's group NPDES permit and the limits therein.
(i.) The Permittee shall be considered a Co-Permittee Member for any given calendar year in
which it is identified as such in Appendix A of the association's group NPDES permit.
(ii.) Association roster(s) and members' TN and TP allocations will be updated annually and in
accordance with state and federal program requirements.
(iii.) If the Permittee intends to join or leave a compliance association, the Division must be
notified of the proposed action in accordance with the procedures defined in the
association's NPDES permit.
(A) Upon receipt of timely and proper notification, the Division will modify the permit as
appropriate and in accordance with state and federal program requirements.
(B) Membership changes in a compliance association become effective on January 1 of the
year following modification of the association's permit.
(e.) The TN and TP monitoring and reporting requirements in this Permit remain in effect
throughout the term of the Permit and are not affected by the Permittee's membership in a
compliance association.
PART I, Page 7 of 8

Permit No. NCO024325
A.(7.) CALCULATION AND REPORTING OF NUTRIENT LOADS
The Permittee shall calculate and report monthly and annual nutrient loads for the T.Z. Osborne
(NC0047384) and North Buffalo (NC0024325) WWTPs as follows:
(a.) Calculation of Discharge Loads: The Permittee shall calculate monthly and annual discharge
loads for each facility as follows:
(i.) Monthly Discharge Load (lb/mo, TN or TP) = TN (or TP) x TMF x 8.34
where:
TN (or TP) = the average Total Nitrogen (or Total Phosphorus) concentration
(mg/L) of the composite samples collected during the month
TMF = the Total Monthly Flow of wastewater discharged during the
month (MG/mo)
8.34 = conversion factor, from (mg/L x MG) to pounds
(ii.) Annual Discharge Load (lb/yr, TN or TP) = Sum of the 12 Monthly TN (or TP) Loads for
the calendar year
(b.) Calculation of Delivered Loads:
(i.) The Permittee shall calculate delivered loads as follows:
(A) Individual, Annual Delivered Load (lb/yr, TN or TP) =
Annual Discharge Load (lb/yr, TN or TP) x TF
where TF = Transport Factor, as follows:
PERMIT
FACILITY
TFTN
TFTP
NCO047384
T.Z. Osborne WWTP
45%
44%
NCO024325
North Buffalo WWTP
43%
42%
(A) Combined Annual Delivered Load (lb/yr) = Sum of the facilities' Individual Annual
Delivered TN (or TP) Loads for the calendar year
(c.) Reporting of Nutrient Discharges: The Permittee shall report each facility's monthly TN and
TP discharge loads in that facility's discharge monitoring report.
(d.) Reporting of Combined Delivered Loads: The Permittee shall report each calendar year's
combined delivered loads with the T.Z. Osborne WWTP's December report for that year and
shall append the report with a summary of monthly loads and calculations. The reported
Combined Delivered Loads should be clearly labeled in the December report.
A.(8.) NITROGEN OPTIMIZATION PLAN
On February 17, 2010 The City of Greensboro submitted a plan to optimize the reduction of nitrogen in
its wasterwater discharges. It is expected that the City of Greensboro will implement these measures
and continue to evaluate its treatment facilities and operational processes to make reasonable efforts to
reduce nitrogen discharges until process improvements are completed.
PART I, Page 8 of 8

/ EFF Flow Meter Report for North Buffalo
DATE `•I —2-
TIME I
NAME
Procedure: They will place the flow meter in the inch readout mode.
Technician will take five readings over a ten-minute period, one reading every two minutes.
These readings consist of the inch reading on the flume wall and the inch reading showing on the flow
meter.
They shall be placed in the table below.
The flow meter will be placed in the emulation mode and verified that the output equals the settings for
inches given.
The current output from the meter to the recorder or SCAD shall also be checked for accuracy.
READING #
4' FLUME
METER
DIFFERENCE
2
O. 2
3`J
+
3
lao
-r Ci.0q
4
)7.S�
1o. 1
-o-Ui
5
1 g,.�55_
_ la.'(2__
-O,vv
AVERAGE ERROR IN INCHES
'- 0,016)
METER SET IN EMULATION MODE: (FI)
INCH SETTING
METER READING
ACTUAL VALUE
6"
-1, .14� 3 ?/
3.464 MGD
12"
01 �
10.34 MGD
181,
`i . c`� ,
19.61 MGD
24"
v, ��( ��
30.87 MGD
30"
�v, .-
43.90MGD
Comments:
C:\Public\TZO Instrumentation\PLC05\EFF flow meter (Milltronics)UNF-EFF CALIBRATION REPORT
SHEET NORTH BUFFALO.doc
27 December 2002

Mickey, Mike
From: Osborne, Ed <[e-mail]>
Sent: Monday, April 13, 2015 1:17 PM
To: Mickey, Mike
Subject: NB Plant
Mike,
Sandfilter 2 is back in service but final 5 is out (out on 3/4/2015).
They hope to have it ready by next week.
Need anything let me know.
Ed Osborne; Plant Supervisor
City of Greensboro
2199 White Street
Greensboro, NC 27405
PO Box 3136, Greensboro, NC 27402-3136
Phone: [phone]
www.greensboro-nc.gov
Please note that email sent to and from this address is subject
to the North Carolina Public Records Law and may be disclosed to third parties.

Mickey, Mike
From: Osborne, Ed <[e-mail]>
Sent: Friday, March 27, 2015 9:54 AM
To: Mickey, Mike
Subject: North Buffalo Plant
Mike,
Wanted to let you know we currently have final tank 5 and sandfilter 2 out of service awaiting repairs.
Ed Osborne, Plant Supervisor
City of Greensboro
2199 White Street
Greensboro, NC 27405
PO Box 3136, Greensboro, NC 27402-3136
Phone: [phone]
www.greensboro-nc.gov
Please note that email sent to and from this address is subject
to the North Carolina Public Records Law and may be disclosed to third parties.

Mickey, Mike
From: Goots, Alicia <[e-mail]>
Sent: Tuesday, January 20, 2015 12:11 PM
To: Basinger, Corey; Mickey, Mike
Cc: 'Groome, Martie; Williams, Elijah; Cooper, Lori W.; Goots, Alicia
Subject: TZO process flow changes
Date: January 20, 2015
Re : City of Greensboro - TZO process flow changes
Good morning,
As you know, we had 3 SSO's due to a break in the sludge line from North Buffalo to TZ Osborne. We wanted
to let you know how we plan to prevent this from happening again for the foreseeable future.
We have 2 lines that run from NB to TZO. The sludge line sends sludge to the sludge blending tank, then the
centrifuge and on to the incinerator.. Since this line is down, the sludge has been moved to the wastewater flow
transfer line. This will send the sludge through the plant to be treated.
We don't expect there to be any issues with the increased loading. We are doing further testing to see if there
will be an impact. We will take any action possible to mitigate impacts'to our influent or our ability to
effectively treat it.
Please let us know if you have any questions.
Alicia Goots
City of Greensboro
-------------------------------------------------------
----------------------------------------------------
Please note that email sent to and from this address is subject
to the North Carolina Public Records Law and may be disclosed to third parties.

I
City
J North
May 27, 2014
of Greensboro
Carolina Water Resources Department
CERTIFIED MAIL 7003 1680 00010763 2688 Return Receipt Requested
CENTRAL FILES
NC Division of Water Resources
1617 Mail Service Center
Raleigh NC 27699-1617
RE: DMR Additional Information -April 2014
T. Z. Osborne NCO 7384 DMR
N2or-th;:HufEalb�N 002 325 D
To Whom It May Concern:
NPDES Violations at T. Z. Osborne
As noted in the DMR comments section, the T. Z. Osborne POTW recorded one monthly average CBOD
violation and 2 weekly average CBOD violations.
Dates/Week
CBOD Weekly Average NPDES Limit
CBOD Weekly Averages Recorded
April 6-12, 2014
6.0 mg/I
9.3 mg/I
April 13-19, 2014
6.0 mg/I
9.1 mg/I
Month
Monthly Average NPDES Limit (mg/1)
Monthly Average Recorded (mg/1)
April 2014
4.0 mg/I
6.1 mg/I
We feel the CBOD violations were caused by sustained high flows at the plant due to rainfall, which
resulted in significantly higher than normal effluent total suspended solids (TSS) concentrations.
Although no TSS violations were recorded, the elevated TSS values obviously impacted the CBOD values.
Once the T. Z. Osborne POTW returned to typical flow levels, the CBOD values also returned to
compliance. The NPDES summer limits begin in April. Please note that the values reported would have
been in compliance with March limits.
In addition, we had several tanks [one final clarifier and one primary clarifier] out of service for
maintenance/repair during the period, which also contributed to the situation. We are now in the
process of returning the final clarifier to service and trying to expedite the repair of the primary clarifier.
CBOD Glucose Glutamic Acid (GGA) Standard [T Z. Osborne and North Buffalo Datal
The T. Z. Osborne Laboratory experienced a problem with the GGA standard during April. Most of the
GGA values for the month (April 1 through April 24) were out of range (low values). The Osborne
Laboratory previously purchased GGA standard from the Hach Scientific Company. Two different lot

May 27, 2014 Letter to Central Files re: April 2014 DMRs'
numbers of the GGA standard were used during the month in an attempt to take corrective action.
Finally, after the second lot also proved to be out of range, the lab staff prepared our own standard in-
house and the values were within range. We think we received two bad lots of GGA from our supplier.
The problem has been corrected as the GGA standard has only been out of range on one day so far
during May. In addition we have now changed to North Central Laboratories, a GGA new supplier.
Metals Values for April 30, 2014 [T. Z. Osborne and North Buffalo Datal
Metals values for April 30 have not been included on the North Buffalo and T. Z. Osborne DMRs, as
several parameters are being reanalyzed by the commercial laboratory. The Osborne Laboratory is
splitting influent and effluent metals samples with a commercial laboratory as part of troubleshooting
the Osborne Lab ICP-MS. The split samples were not within acceptable range. It is likely that the North
Buffalo and T.Z. Osborne samples sent to the commercial lab were inadvertently switched. Upon
receiving the final April 30 metals data from the commercial lab, an amended DMR will be submitted for
both POTWs.
If you have any questions or need additional information, please do not hesitate to contact me.
Sincerely,
Martha E. Groome
Laboratory and Industrial Waste Section Supervisor
cc: Steven Drew, Water Resources Department Director [with DMR copy]
Kenney McDowell, Water Resources Department Deputy Director [via email]
Lori W. Cooper, T. Z. Osborne ORC [with DMR copy]
Ed Osborne, North Buffalo ORC [with DMR copy]
Mike Mickey, NCDENR DWR Winston-Salem Regional Office [via email]
Osborne Laboratory Files [with DMR copy]
North Buffalo DMR Attachment
T. Z. Osborne DMR Attachment
PO Box 3136 - Greensboro, NC 27402-3136 - www.greensboro-nc.gov - 336-373-CITY (2489) - TTY # 333-6930

Mickey, Mike
From: Osborne, Ed <[e-mail]>
.Sent: Thursday, August 14, 2014 8:29 AM
To: Mickey, Mike
Mike,
Aeration 3 had a diffuser grid to float to the top. The tank is out of service. Should be back in no later than Friday the
22nd
Ed Osborne, Plant Supervisor
North Buffalo Water Reclamation Facility
City of Greensboro
2199 White Street
Greensboro, NC 27405
PO Box 3136, Greensboro, NC 27402-3136
Phone: [phone]
www.greensboro-nc.gov
Please note that email sent to and from this address is subject
to the North Carolina Public Records Law and may be disclosed to third parties.
1

Mickey, Mike
From: Osborne, Ed <[e-mail]>
Sent: Tuesday, April 08, 2014 7:08 AM
To: Mickey, Mike
Subject: Plant back on line
The electrical bus has been repaired and we are back to normal operations.
Equipment Out
Final tank 1
Primary 3 and 4
Old barscreen area
All equipment on the hill used for aeration 5.
We will be replacing a valve on final tank 3 but it should be back on line by 1 pm today.
Ed Osborne, Plant Supervisor
Department of Water Resources
City of Greensboro
Phone: [phone]; Fax: [phone]
PO Box 3136, Greensboro, NC 27402-3136
www.greensboro-nc.gov
Please note that email sent to and from this address is subject
to the North Carolina Public Records Law and may be disclosed to third parties.

February'.24, 2014
System Performance Annual Report
Point Source Branch
North Carolina Division of Water Quality PERCS Unit
.1617 Mail Service Center
Raleigh, NC 2.7699-1.617
Water Resources
R U
FEB 7014
Dear PERCS Unit Representative.:
Enclosed, please find three copies of the City of Greensboro's N 11: Sewage Collection and
Water ReclamationP.lant Annual Report as required by House Bill 1160. The certified mail
tracking number is 7003 1680 000107612673.
Please note that in addition to the public notification methods listed in the introduction of the
Sewage Collection and Water Reclamation Report, for 2013, a- public notice of the availability of
the report will be published in the (Greensboro) News & Record on February: 27, 2014 and
March 3, 2014. The newspaper public notice lists all locations where the report is. available. A
copy of the publication affidavit has been requested and will be available for review. upon
request.
If you have any questions or need additional information regarding this report, please contact
,Steve Drew at 336-373-2050 or Martie Groome at 336-433-7229..
Sincerely,
LaVelle Donnell
Department of Water Resources
PO Box 3136 - Greensboro, NC 27402-3136 ww*.greensbqro-nc.g 436-373-CITY (2489) TTY# 333-6930
640

d✓S�Lt�J �" C/r
` City of Greensboro
GREENSBORO
Water.Resources department
Sewage Collection and Water Reclamation Plant Report aor' 2013
Aerial photo of T.Z. Osborne Wastewater Plant Aerial, photo of North Buffalo Wastewater Plant
The Clean Water Act of 1999 (House B i 111160) requires al I entities that own or operate wastewater collection and treatment systems to
make an annual report available to their customers. The report must detail how a system operates, how wel I it performed during the
year, whatviolations occurred, and other information. This report is produced in compliance with these requirements and covers the
calendar yearjanuary- December 2013. This report is available to all customers, and is submitted to the North Carolina Departmentof
Environment and Natural Resources. Included in this report is a table I isti ng the spi Its and overflows that occurred during the 2013 year.
The City of Greensboro Water Resources Department operates two water reclamation plants and a sewage collection system that
collects and transports the sewage to these two plants; some transfer of sewage occurs between the two plants. The North Buffalo
Facility and the T.Z. Osborne Facility are permitted to process up to 16 and 40 mil lion gallons of wastewater per day, respectively.
r1lVastewater System ���rvie�`r
The sewage collection and water reclamation system of the City of Greensboro begins with approximately 102,826
connections that serve homes, commercial establishments, and industries. Every day an average of 26 million gallons
of sewage is generated in our homes and industries that must be collected, transported, and treated to very stringent
standards before it is released back into our environment (in our streams). This service is provided by the City's Water
Resources Department and is funded almost entirely from the user charges that are paid monthly by our customers.
The City of Greensboro operates a sewage collection system comprised of 1,603 miles of gravity line, 39,329
sewer manholes, 48 pump stations, and 90 miles of pressurized sewage force main. The system is subject
to many rules and regulations. All spills and overflows of any volume that reach surface water must be
reported to the State. Spills that exceed 1,000 gallons must also be reported to local news media outlets.

The City of.Greensboro's Treatment Plants operate under National
Pollutant' Discharge Elimination System (NPDES) Permits.
These are highly complex. permits that include monitoring
requirements and discharge limits. The permits can be viewed
at our treatment plants upon request. Compliance with these
permits require our laboratory to conduct over 10,500 tests per
year. Any one of these tests may result in a value that causes us
to violate the limits of the NPDES Permit. Wastewater treatment
plant operators have no control over some limited parameters
(Cyanide, selenium and cadmium) other than through regulating
what industry and households can discharge to.the sewers.
During 20.13 the Water Resources Department treated 10.4
billion gallons of wastewater and returned it to our streams.
We are proud of the outstanding performance of these facilities
made possible by the dedicated efforts of the professionals who
operate, maintain and conduct tests for these plants. All NPDES
permit violations are reported to the State of North: Carolina
to ensure compliance with all reporting regulations. A list of
the violations that occurred during the 2013 calendar year is
at the end of this report (Tables 1-3). There were no detected
environmental impacts from any of these permit violations.
t Fats, Oils,_ :and �r�aser®gram
To prevent undue introduction of fats, oils, and grease (FOG)
into the wastewater collection system, the City of Greensboro
Water. Resources Department is implementing a FOG Policy
designed to educate and enforce the proper disposal of FOG
within City jurisdictions. The FOG policy educational -and-
enforcement. programs are intended for all customers (Food
Service Establishments, Nursing/Group homes, Schools/Cafeterias,
Industries, and Residents) that discharge wastewater into the
City of Greensboro Sanitary Sewer System with the aim of
mitigating or eliminating Sanitary Sewer Overflow (SSOs) that
are grease related. The City of Greensboro FOG policy requires
all commercial and food service establishments to install and
regularly maintain an appropriately sized grease trap or interceptor.

The Greensboro Water Resources Department is proud that "
given the capacity of our treatment plants and the age -of our
collection system, our permit departures have been minimal,
especially when compared .to similar cities. We recognize
however, that in the changing climate of environmental
concern, total. compliance is demanded by the public.
In an effort to continue to improve our wastewater collection
system and meet the .demands of new regulations various
capital improvement projects have been initiated. To prepare
for nutrient reduction requirements of the Jordan Lake Rules,
upgrades that will provide a higher level of treatment for the
T.Z. Osborne. facility are currently underway. Also at T.Z.
Osborne plant, solid waste that is generated by both facilities is
now managed bya�;new fluidizedbed incinerator. An°on-going
cleaning, and inspection. program'to .monitor and maintain our
sewer system ,continues, along with an aggressive program to
rehabilitate old leaking sewer lines that exhibit signs of age.
The annual Sewage and Water Reclamation Plant Report is
available at the following City of Greensboro locations: the
Vance H. Chavis Lifelong Learning Branch Library, McGirt-
Horton Branch Library, Central Library, Melvin Municipal
Office Building (MMOB), all Water Resources Facilities,
and also the City's website: www.greensboro-nc.gov/water.
Customers will also receive notification concerning availability
in the At Your Service quarterly newsletter, that are distributed
in water ,and sewer bills from April to May of M14.
Additional copies of the report may be requested by
calling the City Contact Center at (336j 373-2489 (CITY).

The .City of Greensboro had a total of 77 Sanitary Sewer Overflows (SSOs) in 2013 from January 1 st — December 31 st. SSOs occur
when problems in the system cause sewage to emerge from manhole covers, service cleanouts or plumbing fixtures. With the help of
each sewer customer using the sewer system responsibly, the City will continue to reduce the number of SSO occurrences each year.
Grease was the number one contributing factor of SSOs during 2013.Other issues reported were debris in line, pump station equipment
failure, roots, and pipe failure breaks. Examples of debris found in the collection system are rags, flushable wipes, rocks, sticks, feminine
hygiene products, etc. The City has an ongoing Fats, Oils, and Grease Program to educate residents and business owners regarding
the need to keep grease and other inappropriate objects out of the sewer system, as well as a comprehensive maintenance program.
We thank our customers and the sewer maintenance staff for the collaborative efforts in reducing the amount of SSOs every year.
T.Z. Osborne Publicly Owned Treatment Works
National Pollutant Discharge Elimination System (NPDES) Permit #NC0047384
urvibeP ®f Violations *. ' : ; _ T e of lation' s ,.
Month Description N- YP
_ �j (_ = =
---------------------
N/A i N/A j 0 IF N/A
North Buffalo Publicly Owned Treatment Works
National Pollutant Discharge Elimination System (NPDES) Permit #NC0024325
Mont ®escr�ptwn Number of diol;Aon
January h Bioassay
1
Note: There were no environmental impacts noted for the above violations.
Bioassay
Definitions:
Bioassay- No Female Water Flea Mortality or Significant Reproduction Rate Impact Using 90% Effluent.

-,..
r
t 4 -- -
J&' -s -'
MA
ZE
,•fit � �. �'s -r
-'
�awage �,ptlllrm e✓lleconS swat �xceeclong9 DOfl Gallons F
4
Sewage Collecti®n System
Permit #V11QCS00006
# } Volume Surface
Per litee ; Permit Incident I Probable
Number Started Reaching Water, Location
Cause
�� Surface Water
d---=-- —-..,�,a•(�- --- — ice_. - - — - -
1iCity of i Battleground
y WQCS00006 ,1/22/2013 1,800 i HoCrsepen Avenue at Broken Main j.
Greensboro reek i
Devonshire Drive li
City. ofa; 1
WQCS00006 2/12/2013 Paper/Rags
Pa 3,000 �- S Buffalo 4931 W Market s+
Greensboro l I 1 j p 9
FCity of� lHorsepen
Greensboro �I WQCS00006 i 1 2/19/2013 3,500 Creek " 800 Radar Road Grease
City of 1
i WQCS00006 17/10/2613 12,000 I S Buffalo 3600 Frazier Road 111 Roots
Greensboro # I
City of WQCS00006 1 7/15/2013 3,500 S Buffalo 1616 Random Grease j
Greensboro I i Drive
City of WQCS00006 i 9/16/2013 6,000 ! Brush Creek' 4912 Jessup
Greensboro Broken Main
1 ! l Grove Road
The following are the professionals designated by the state as the "Operators in Responsible Charge" (ORC) of the respective
systems and permits for the systems:
North Buffalo Water Reclamation Facility Permit No. NC0024325, ORC Nathan Osborne, [phone]
T.Z. Osborne Water Reclamation Facility Permit No. NC0047384, ORC Lori Cooper, [phone]
Sewage Collection System, Permit No. WQCS00006, ORC Mark Malloy, [phone]
WATER RESOURCES ADMINISTRATION: 336-373-2055
T. Z. OSBORNE WATER RECLAMATION: 336-373-7740 NORTH BUFFALO WATER RECLAMATION: 336-373-5913

Mickey, Mike
From: Mickey, Mike
Sent: Wednesday, February 12, 2014 1:48 PM
To: 'Groome, Martie'
Subject: November DMR - N. Buffalo
Martie — Just FYI —The November monitoring report for N. Buffalo didn't note the holidays causing the computer to
create erroneous violations. I will make them disappear. No need to resubmit.
Enjoy the snow. Mike.
NC 024325
Monitoring Violation,
North Buffalo Creek W
Violation i• Monitor 'Environmental® Parameter Dese Violation,1.
:Report°.iInterest
Year b.
Frequency 2013j 11 001 Chlorine, Total 111-16-2013 15 X week
Violation Residual
Frequency
2013
91
00 ➢
DO, Oxygen,
11-16-2013
a X weeR
Violation
Dissolved
Frequency
2013
11
'0131
pH
11-16-2013
5Xweeli
Violation
Frequency
2013
11
00'1
Temperature, Water
11-16-2013
5 X vveeC
Violation
Deg. Centigrade
Mike Mickey
Mike.Mickev0NCDENR.eov
NC Division of Water Resources
585 Waughtown Street
Winston-Salem, NC 27107
Phone: [phone]
FAX: [phone]
E-mail correspondence to and from this address may be subject to the North
Carolina Public Records Law and may be disclosed to third parties.
1

NCOO24325
Monitorinq Violation
North Buffalo Creek WWTP
Frequency 6
IMicrogram 3
Viclation 's
2013I
113
001
Chlorine, Total Residual_ 11-16-2013
5 X week
js per Liter
Frequency
_
Milligrams
Violation
20131
111
001
DO, Oxygen, Dissolved 111-16-2013
5 X week
._
per Liter
Standard —
Frequency
J€ Units, i.e.
Violation
2013
11'
001
pH 11-16-2013
SXweek
Ph
w _----
_ -
Frequency
Temperature, Water
Degrees
Violation
2013
11 [
001
Deg. Centigrade i 11-16-2013
5 X week
Centigrade E

Mickey, Mike
From: Groome, Martie <[e-mail]>
Sent: Monday, February 17, 2014 11:49 AM
To: Mickey, Mike
Cc: Goots, Alicia.
Subject: RE: November DMR - N. Buffalo
Mike,
We are so sorry. Thanks so much for taking care of this for us. The last two pages of the 4-page report did have the
holiday designations, but we had to reprint the first two pages and we forgot to add the Holiday link on our reprints.
promise we will check and recheck in the future. I apologize for the inconvenience.
Our new permit which went to public notice last week will require us to go to a-DMR within 270 days of
issuance. Maybe the state IT folks will have all this holiday stuff taken care of in their system and we will not be able to
make this mistake! Let's hope so!
Martie and Alicia
Martie Groome, Laboratory and Industrial Waste Section Supervisor
Water Resources Department
City of Greensboro
Phone: [phone] Fax: [phone]
Box 3136, Greensboro NC 27402-3136
www.g reensboro-nc.dov
From: Mickey, Mike [mailto:mike. mickey(c ncdenr:gov]
Sent: Wednesday, February 12, 2014 1:48 PM
To: Groome, Martie
Subject: November DMR - N. Buffalo
Martie — Just FYI — The November monitoring report for N. Buffalo didn't note the holidays causing the computer to
create erroneous violations. I will make them disappear. No need to resubmit.
Enjoy the snow. Mike.

NCO024326
Monitoring Violation
North Buffalo Creek W
Frequency 20131 111
Violation
001
Chlorine, Total
Residual
11-16-2013
15 X weeR
Frequency 2013[_
11
001
0, Oxygen,
11-16-2013
5Xweek
Violation
---
LD:i�so�x�ved
Frequency 2013
Violation
001
IpH
111-16-2013
15 X weeR
-
Frequency 3
201
001
Temperature, Vkfater
11-16-2013
X week
Violation
Deg. Centigrade
�5
Mike Mickey
Mike.Mlc1keyPNCDENR.go
NC Division of Water Resources
585 Waughtown Street
Winston-Salem, NC 27107
Phone: [phone]
FAX: [phone]
E-mail correspondence to and from this address may be subject to the North
Carolina Public Records Law and may be disclosed to third parties.
-------------------------------------------------------
Please note that email sent to and from this address is subject
to the North Carolina Public Records Law and may be disclosed to third parties.
PJ

Mickey, Mike
From: Osborne, Ed <[e-mail]>
Sent: Tuesday, March 11, 2014 2:02 AM
To: Mickey, Mike
Subject: RE: NPDES Issues from ice storm?
The only problem we encountered was water that got into one of our bus bars that supplied power to 50% of the plant.
At the moment we are down to one final tank, two aerations, one blower, two primaries and the transfer pump station is
on a separate line so it is operating at full capacity. The flow to North buffalo has been reduced to 4 to 5 mgd.
The sandfilters have no power. They are working on the problem and hopefully we will get every thing back soon. We
had no violations but since the blowers were off for 24 hours naturally our nitrification is struggling. we are currently at 5
ppm. We will be rebuilding solids and should have no problems maintaining our limits.
Ed Osborne, Plant Supervisor
Department of Water Resources
City of Greensboro
Phone [phone]
Fax [phone]
P.O. Box 3136 Greensboro NC 27402-3136
WWW. Greensboro-NC.Gov
From: Mickey, Mike [[e-mail]]
Sent: Monday, March 10, 2014 8:47 AM
To: Osborne, Ed; Cooper, Lori W.
Subject: NPDES Issues from ice storm?
Ed & Lori —Just checking to see if you had any major issues at North or Osborne from the ice attack last Friday? Thanks,
Mike.
Mike Mickey
Mike.Mickev(@NCDENR.eov
NC Division of Water Resources
585 Waughtown Street
Winston-Salem, NC 27107
Phone: [phone]
FAX: [phone]
E-mail correspondence to and from this address may be subject to the North
Carolina Public Records Law and may be disclosed to third parties.
Please note that email sent to and from this address is subject
to the North Carolina Public Records Law and may be disclosed to third parties.

4
Mickey, Mike
From: Osborne, Ed <[e-mail]>
Sent: Friday; December 20, 2013 6:47 AM
To: Mickey, Mike
Subject: RE: Two questions
Attachments: nb pumps 001jpg; tzo pump 001jpg
TZO rates are correct for TZO. North Buffalo pumps will do 12.5 , or could when they were new. I have attached the
O&M design sheet for both.
Yes to number 2.
From: Mickey, Mike[mailto:mike. mickey(ftcdenr.gov]
Sent: Wednesday, December 18, 2013 4:39 PM
To: Osborne, Ed
Subject: Two questions
Ed — Thanks for your time today. Two questions:
1) Is the following influent pump station description correct? Two 10.5 MGD pumps that convey wastewater to
the N. Buffalo WWTP (later will be used to convey to the new 20 MGD EQ basin after decommission), and five
13.5 MGD pumps that convey wastewater to TZ Osborne via a 30-inch and a 54-inch force main (with a sixth 13.5
MGD pump to be added prior to decommissioning).
2) And, is sodium aluminate or polyaluminum chloride added prior to the secondary clarifiers to aid in phosphorus
removal?
Thanks, Mike.
Mike Mickey
IVI1 ke.IVI ickev@ NCDEN R.eov
NC Division of Water Resources
585 Waughtown Street
Winston-Salem, NC 27107
Phone: [phone]
FAX: [phone]
E-mail correspondence to and from this address may be subject to the North
Carolina Public Records Law and may be disclosed to third parties.
Please note that email sent to and from this address is subject
to the North Carolina Public Records Law and may be disclosed to third
parties.
1

DESIGN SUMALA,RY
NORTH BUFFALO CREEK WRF
'TRANSFER PtiMI' STATION
NORTH BUFFALO
PUMll' MODEL:
16NHG22-VC18DB QTY. 2
DESIGN POINT:
8,700 GPM 0q, 32' TDH u; 720 RPM
IMPELLER DIA:
22.00" 12' (Trim to'be verified by Cornell Test Lab)
UNIT WEIGHT:
4,500 LBS. (Approx. Pump and Mlotor)
CORNELL FILE:`:
vl7'12144
BASE:
FABRICATED STEEL SOLEPLATE
SUCTION ELBOW:
16" X 16" CAST IRON WITH CLEANOUT
MOTOR:
100I-1P, 720RPM, TEFC MOTOR, VERTICAL P-BASE, 460.VAC 60/3,
PREMIUM EFFICIENT, INVERTER DUTY, 1.15SF ON SINE WAVE —
LOSF ON VFD OPERATION, NORMAL THRUST, CLASS F
INSULATION, VACUUM PRESSURE IMPREGNATION
TREATIMENT, WINDING RTD SENSORS, SPACE HEATER,
ROUTrNTE TEST WITH REPORT.

DESIGN SUNENIARY
NORTH BUT, FALO CREEK WRF
TRANSFER PUiMP.STATION
T.Z. OSBORNE
PUMP MODEL: 16NHG22-VCI2DTR
DESIGN POINT
IMPELLER DIA
UNIT 1AT-IGHT:
CORNELL FILEfI
BASE
QTY. 5
9 400 GPM @ 154' TDH @ 1200 RPM i-'1.�j �--
22.00" 6° (Trim -to be verified by Cornell Test Lab)
9,000 LBS. (Approx. Pump and Motor)
MP 12144
FABRICATED STEEL SOLEPLATE
SUCTION ELBOW: 16" X 16" CAST IRON WITH CLEANOUT
MOTOR: 500HP, 1200RPM,'TEFC MOTOR, VERTICAL P-BASE, 460VAC 60/3,
PREMIUM EFFICIENT, INVERTER DUTY, 1.15SF :ON SINE WAVE —
1.OSF ON VFD OPERATION, NORMAL THRUST, CLASS F
INSULATION, VACUUM PRESSURE IMPREGNATION;
TREATMENT, WINDING RTD SENSORS', SPACE HEATER,
CURRENT TRANSFORMER, COMPLETE INITIAL TEST WITH
REPORT.

rA
City
6 I North
of Greensboro
Carolina Water Resources Department
January 27, 2014 [via certified mail submitted with December DMR]
Attn: Central Files
NC Department of Environment and Natural Resources
Division of Water Resources
1617 Mail Service Center
Raleigh NC 27699-1617
RE: December 2013 DMR City of Greensboro North Buffalo POTW NC0024325
Data from December 10, 2013 Effluent Composite Not Representative Due to Contaminated
Effluent Sample Container
To Whom It May Concern:
The CBODS, ammonia -nitrogen and total suspended solids data from December 10, 2013 were not
reported on the December 2013 DMR. These tests were conducted on aliquots taken from the 24-hour,
composite sampler jug which we later discovered had been contaminated with sodium bisulfite. The
sample in the composite jug was in noway representative of the effluent that was being discharged to
the creek because of the jug contamination and so the decision was made to invalidate the data. The
North Buffalo NPDES permit only requires twice per week monitoring for these parameters and thus, no
monitoring violations occurred.
The decision to invalidate data is a serious one and there must be a scientific, justifiable and verifiable
reason. We feel this situation met those criteria.
The contamination occurred as follows:
• The North Buffalo Operator in Responsible Charge (ORC) was investigating and mitigating a high
residual chlorine value in the chlorine contact chamber
• A portion of the effluent composite sample was removed and poured into an unmarked
container for use in process control analyses
• Another container of sodium bisulfate was also nearby to be used in the process control
analyses
• At the conclusion of the process control analyses, the ORC intended to pour the unused portion
of the effluent composite sample back into the composite jug. However, he picked up the wrong
container and poured the entire container of sodium bisulfite into the effluent composite jug.
The ORC was not aware of his error at the time.
The effluent composite sample jug (composited from —7 am Monday December 9 to ^7 am Tuesday
December 10) was delivered to the Osborne laboratory for analyses on the morning of December 10.
• A composite sample pH was conducted (as required for the CBOD test) and the pH was 4.65
units. The Laboratory Coordinator was contacted immediately.

Letter to DWR Central Files From City of Greensboro re: North Buffalo December 2013 DMR Page 2
The CBOD chemist adjusted the pH to 7.04 as required for the test and continued with the
CBODS test. However, the initial dissolved oxygen readings on the typical dilutions were rapidly
approaching zero. No one in the laboratory had ever seen this scenario. The dilutions were
reduced to finally yield a valid initial dissolved oxygen reading.
The other analyses on the composite sample proceeded as normal (ammonia -nitrogen and total
suspended solids)
Osborne Laboratory staff knew something was wrong, but had no idea at the time what could
have caused the problems they were seeing. Water Reclamation Operations supervisory
personnel were notified.
After an investigation, the North Buffalo ORC realized what had happened with the sodium bisulfite. All
staff agreed that the North Buffalo effluent composite sample jug had been contaminated and that the
data were not representative of the effluent being discharged to the surface waters during that period.
There was additional data to support this conclusion.
Sodium bisulfite (a.k.a. Sulfurous Acid) has an extremely high oxygen demand and thus,
explained the oxygen problems in the CBODS test and the low pH values.
• The Osborne Laboratory staff voluntarily collect creek samples above and below each
Greensboro POTW every Tuesday. On Tuesday, December 10 the creek data was as follows:
Creek Location
pH
Dissolved Oxygen
Temperature
North Buffalo Above
7.23 units
10.97 mg/1
8.1 °C
North Buffalo Below
7.06 units
10.80 mg/1
8.8 °C
Rankin Mill Road (Below #2)
7.04 units
10.70 mg/1
8.4 °C
The Osborne laboratory staff also collect the NPDES required daily effluent grab samples and
conduct the daily analyses for pH, dissolved oxygen, temperature and residual chlorine. The
effluent grab sample for December 10 was collected at 9:08 a.m. and the results were as
follows:
Residual
Grab Sample
pH
Dissolved Oxygen
Temperature
Chlorine
North Buffalo
6.88
8.84 mg/I
18.1 °C
<14 ug/I
Effluent
units
In order to definitively prove that the sodium bisulfite caused the contamination, the Osborne
laboratory staff "recreated" the scenario by adding several gallons of North Buffalo effluent
sample to a composite jug and then adding approximately the same amount of sodium bisulfite
that was added by the ORC to the December 10th sample jug. The recreation event resulted in
an effluent pH of 4.87 and the CBODS test mimicked the dramatic oxygen demand observed in
the December 10th sample.
Because of this situation the Operations Supervisor has determined that no process control
samples will be run on any NPDES composite sample taken from a composite sampler by
operations staff.

Letter to DWR Central Files From City of Greensboro re: North Buffalo December 2013 DMR Page 3
If you have any questions, please feel free to contact me.
Martie Groome
Laboratory and Industrial Waste Section Supervisor
336-433-7229
[e-mail]
Cc: Don Howard, Water Reclamation Manager (via email)
Lori W. Cooper, T. Z. Osborne ORC/Operations Supervisor (via email)
Ed Osborne, North Buffalo ORC (via email)
Alicia Goots, Laboratory Coordinator (via email)
Mike Mickey, DWR Winston-Salem Regional Office (via email)

Mickey, Mike
From:
Mickey, Mike
Sent:
Monday, March 03, 2014 8:25 AM
To:
'Goots, Alicia'
Cc:
Groome, Martie
Subject:
RE: Inclement weather policy
Alicia — With winter issues, we simply advise that you write "snow" or "ice" in any spaces where a parameter cannot be
collected due to weather and then include an explanation along with the DMR. Safety is the number one priority in
these situations and we would not consider any omitted parameters to be a violation. Hope that answers your
question. Mike.
Mike Mickey
Mike. [e-mail]
NC Division of Water Resources
585 Waughtown Street
Winston-Salem, NC 27107
Phone: [phone]
FAX: [phone]
E-mail correspondence to and from this address may be subject to the North
Carolina Public Records Law and may be disclosed to third parties.
From: Goots, Alicia [mailto:Alicia.Goots5cireensboro-nc.govl
Sent: Monday, March 03, 2014 7:25 AM
To: Mickey, Mike
Cc: Groome, Martie
Subject: Inclement weather policy
Good morning
Martie and I have a question for you. A couple of weeks ago, when we had the huge snow, the City of Greensboro closed
for the day. It was a first for me and Martie so we had no plan in place. We had people come in that day to preserve
everything they could and run D.O., temperature, pH and chlorine. Could we have called that an "act of God" and listed it
as a "holiday" on our state reports? Our main concern is the safety issue. We have our new NB permit with the reduced
monitoring and should have TZO's soon. If they had both been here, the main issue would have been the grab
samples. I don't expect them to close the City again, but we would -like to have a plan in place for the safety of everyone
in the lab.
Sincerely,
Alicia
Alicia Goots, Laboratory Coordinator
Department of Water Resources
City of Greensboro
Phone: [phone]; Fax: [phone]
PO Box 3136, Greensboro, NC 27402-3136
www.greensboro-nc.gov

-------------------------------------------------------
-------------------------------------------------------
Please note that email sent to and from this address is subject
to the North Carolina Public Records Law and may be disclosed to third parties.

MCD
North Carolina Department of Environment and Natural Resources
Division of Water Resources
Water Quality Regional Operations Section
Pat McCrory Thomas A. Reeder John E. SI<varla, III
Governor Director
Secretary
December 20, 2013
Mr. Steven Drew, Director
Water Resources Department
City of Greensboro
P.O. Box 3136
Greensboro, NC 27402-3136
SUBJECT: Compliance Evaluation Inspection
North Buffalo WWTP — City of Greensboro
NPDES Permit No. NCO024325
Guilford County
Dear Mr. Drew:
On December 18, 2013, Mike Mickey of this office met with Ed Osborne, ORC, to perform a Compliance
Evaluation Inspection of the NPDES wastewater discharge from the North Buffalo facility. The treatment facility
was found to be in compliance with the effluent limits and monitoring requirements of the NPDES permit. The
inspection findings are detailed below and an inspection checklist is attached for your records.
I. Permit
The NPDES permit was modified effective June 1, 2013 to reduce the monitoring frequency for BOD, TSS, NH3-N
and fecal coliform from daily to twice per week per DWR's guidance for "Reduction of Monitoring Frequencies for
Exceptionally Performing Facilities". Congratulations on being deemed an "Exceptionally Performing Facility".
H. Self -Monitoring Program
The monthly self -monitoring reports (DMRs) were reviewed for the period January 2013 through October 2013.
This review found the North Buffalo facility to be compliant with all final effluent permit limitations for the period,
except for a toxicity limit violation that occurred in January 2013 (see data summary attached). Additionally, it
was noted that all sampling was performed per the frequencies specified in the permit.
III. Flow Measurement
The NPDES permit requires continuous flow recording and annual calibration of metering devices. The daily
effluent flow values reported on each DMR are measured by an ultrasonic meter and parshall flume. The meter is
routinely calibrated by city staff. In addition, flow proportional composite samples are collected from the effluent
as required by the permit.
IV. Sludge Handling and Disposal
Solids generated at the North Buffalo facility are stored in a single holding tank prior to pumping to the T.Z.
Osborne facility for dewatering and incineration.
V. Operations and Maintenance
Observations did not indicate any concerns with the operation and maintenance of the North Buffalo facility.
North Carolina Division of Water Resources, Winston-Salem Regional office
Location: 585 Waughtown St. Winston-Salem, North Carolina 27107 one
Phone: [phone] FAX: [phone] Customer Service: 1-877-623-6748 ®C` cilia
Internet: www.ncwaterquality.org �������
An Equal Opportunity l Affirmative Action Employer

.b W,
Mr. Steven Drew
Page 2
December 20, 2013
VI. Facility Site Review
Please see the attached inspection checklist for specific comments regarding system components. Additionally, the
City of Greensboro is proceeding with plans to decommission the North Buffalo treatment facility, possibly in
2015. In preparation, the Division issued wastewater collection permit No. WQ0036639 on August 7, 2013. This
permit approved the construction of components necessary to transfer all flow to the T.Z. Osborne POTW for final
treatment.
VU. Records/Reports
A comparison of the October 2013 DMR with laboratory data for pH, dissolved oxygen, fluoride and zinc found
that these parameters were accurately transcribed onto the October self -monitoring report.
VM. Effluent/Receiving Waters
The system discharges into North Buffalo Creek, class "WS-V; NSW" waters in the Cape Fear River Basin.
Our office appreciates the conscientious effort by the City of Greensboro staff to comply with the NPDES
permit. Should you have any questions concerning this report, please contact Mike Mickey or me at (336) 771-
5000.
Sincerely,
fVIW. Corey Basinger
Regional Supervisor
Water Quality Regional Operations
Division of Water Resources
cc: Ed Osborne (via email: [e-mail])
Martie Groome (via email: [e-mail])
Central Files
!WNS-RQ%r-

City of Greensboro — North Buffalo WWTP
NPDES Permit No. NC0024325
Self -Monitoring Data Summary
January 2013 — October 2013
Parameter
Monthly Avg.
. Permit Limit
Monthly Avg. Limit
Violations per DMR
Weekly Avg.
Permit Limit
Weekly Avg. Limit
Violations per DMR
Flow (MGD)
16.0
None
-
NA
CBOD (mg/L)
(8.0 / 16.0)*
None
(12.0 / 24.0)*
None
TSS (mg/L)
30.0
None
45.0
None
NH3-N (mg/L)
(4.0 / 8.0)*
None
(12.0 — 24.0)*
None
Fecal (#/100 ml)
200
None
400
None
D. Oxygen (mg/L)
-
NA
> 6.0 **
None
pH (S.U.)
-
NA
(6.0— 9.0) range
None
T. Chlorine (ug/L)
-
NA
17.0***
None
T. Mercury (ug/L)
0.012
NA
0.036****
None
Chronic Toxicity
P/F @ 90%
January 2013 (58.1 %)
-
NA
*(Summer / Winter limits)
**Daily Average Limit for Dissolved Oxygen.
***Daily Maximum Limit for Total Residual Chlorine (fRC). TRC values reported below 50 ug/L are considered compliant.
****Daily Maximum Limit for Mercury.
Nutrient Limits: 2012 Combined Load for the N. Buffalo & T.Z. Osborne POTWs.
,Parameter
Permit Limit - Total Combined
Delivered Load (lb/yr)
Reported - Combined Delivered
Load per 2012 Annual Summary
Total Nitrogen
401,073 (effective I1/2016)
438,237 lb/yr.
Total Phosphorus
49,299 (effective 1/1/2010)
23,126 lb/yr.

a - �
United States Environmental Protection Agency
Form Approved.
EPA Washington, D.C. 20460
OMB No. 2040-0057
Approval expires 8-31-98
Section A: National Data System Coding (i.e., PCS)
Transaction Code NPDES yr/mo/day Inspection Type Inspector Fac Type
1 INI 2 1 s 1 31 NCO024325 111 12I 13/12/18 117 181 C l 19101 201 I
UJ tt.=!! U LJ t
Remarks
211
I I I 1 1 1 1 1.1 1 1 1 1 1 1' I I I I I I I I I I 1 1 1 1] 1 1 1 1 1 1 1 1 1] I I 1 1 16
Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA - - — — -- -,--------Reserved-------=-----------
67I 169 701 51 71 [j 721 N I 73 I 74 751 I I I I I Li 80
�--� }—► WI '
Section B: Facility Data
Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include
POTW name and NPDES permit Number)
Entry Time/Date
Permit Effective Date
North Buffalo Creek WWTP
11:20 AM 13/12/18
12/10/01
Exit Time/Date
Permit Expiration Date
2199 White St ,
Greensboro NC 274057461
12:05 PM 13/12/18
16/06/30
Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s)
Other Facility Data
Nathan Edward Osborne/ORC/336-373-5913/
Name, Address of Responsible Official/Title/Phone and Fax Number
.Steven Drew,PO Box 3136 Greensboro NC 274023136//336-373-2055/3364126305 ContactedYes
Section C: Areas Evaluated During Inspection (Check only those areas evaluated)
Permit Operations & Maintenance N Records/Reports Self -Monitoring Program
Sludge Handling. Disposal Effluent/Receiving Waters
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
(See attachment summary)
Name(s) and Signature(s) of Inspector(s) Agency/Office/Phone and Fax Numbers Date
Michael M Mickey WSRO WQ//336-771-4962/
C" Q,-,
Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date
EPA Form 3560-3 Rev 9-94 Previous editions are obsolete.
Page # 1

Permit: NCO024325
Owner - Facility: North Buffalo Creek WWTP
Inspection Date: 12/18/2013 Inspection Type: Compliance Evaluation
Permit
(If the present permit expires in 6 months or less). Has the permittee submitted a new application?
Is the facility as described in the permit?
# Are there any special conditions for the permit?
Is access to the plant site restricted to the general public?
Is the inspector granted access to all areas for inspection?
Comment: The North Buffalo permit was reissued on October 1, 2012. The permit
was subsequently modified effective June 1, 2013 to reduce the monitoring frequency
for BOD, TSS, NH3-N and fecal coliform from daily to 2/week after an evaluation of
three years of monitoring data per DWR's guidance for "Reduction of Monitoring
Frequencies for Exceptionally Performing Facilities".
A review of the North Buffalo DMRs for the months January 2013 through October 2013
found the facility to be compliant except for one toxicity test failure in January 2013.
This violation was previously addressed in correspondence from the Division.
With a target date of 2015, planning has begun to decomission the North Buffalo WWTP
and transfer all flow to the T.Z. Osborne facility. In preparation, non -discharge permit
No. WQ0036639 was issued on August 7, 2013 for the conversion of aeration basin #5
to a 20 MG EQ basin and for the addition of a sixth 13.5 MGD transfer pump.
Operations & Maintenance
Is the plant generally clean with acceptable housekeeping?
Yes No NA NE
❑ ❑ ■ ❑
❑ ❑ ❑
❑ ■ ❑ ❑
■ ❑ ❑ ❑
■Q❑❑
Yes Nn Ale NF
■ ❑ ❑ ❑
Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable Solids, pH, DO, Sludge ■ Cl ❑ ❑
Judge, and other that are applicable?
Comment: The 16.0 MGD treatment system consists of three mechanical bar screens,
influent flow measurement, aerated grit removal, influent pump station, four primary
settling tanks, four aeration basins, five secondary clarifiers, four tertiary sand filters,
effluent flow measurement, chlorination, contact tank and dechlorination.
Record Keeping
Are records kept and maintained as required by the permit?
Is all required information readily available, complete and current?
Are all records maintained for 3 years (lab. reg. required 5 years)?
Are analytical results consistent with data reported on DMRs?
Is the chain -of -custody complete?
Dates, times and location of sampling
Name of individual performing the sampling
Ves Nn AIA NG
■
Page # 3

Permit: NCO024325
Inspection Date: 12/18/2013
Record Keeping
Results of analysis and calibration
Dates of analysis
Name of person performing analyses
Transported COCs
Are DMRs complete: do they include all permit parameters?
Owner -Facility: North Buffalo Creek WWTP
Inspection Type: Compliance Evaluation
Has the facility submitted its annual compliance report to users and DWQ?
(If the facility is = or > 5 MGD permitted flow) Do they operate 24/7 with a certified operator on each shift?
Is the ORC visitation log available and current?
Is the ORC certified at grade equal to or higher than the facility classification?
Is the backup operator certified at one grade less or greater than the facility classification?
Is a copy of the current NPDES permit available on site?
Facility has copy of previous year's.Annual Report on file for review?
Comment: A comparison of the October 2013 DMR with laboratory data for pH,
dissolved oxygen, flouride and zinc found that these parameters were accurately
transcribed on the self monitoring report. The TZ Osborne laboratory performs all
analyses except for nitrate/nitrate nitrogen, TKN, cyanide, flouride, mercury and toxicity
which are analyzed by Meritech. The TZ Osborne staff also collects and analyzes all
effluent field parameters (dissolved oxygen, temperature, pH, and total residual
chlorine).
Bar Screens
Type of bar screen
a.Manual
b.Mechanical
Are the bars adequately screening debris?
Is the screen free of excessive debris?
Is disposal of screening in compliance?
Is the unit in good condition?
Al
■
Comment: There are three 40 MGD mechanical bar screens. Screenings landfilled.
Pump Station - Influent vP�_ W„ Ala MP
Is the pump wet well free of bypass lines or structures?
■ ❑ ❑ ❑
Page # 4

Permit: NCO024325 Owner - Facility: North Buffalo Creek WWTP
Inspection Date: 12/18/2013 Inspection Type: Compliance Evaluation
Pump Station - Influent Yes No NA NE
Is the wet well free of excessive grease? ■ Q ❑ ❑
Are all pumps present? _ ❑ ❑ ❑
Are all pumps operable? ❑ ❑ ❑
Are float controls operable? ❑ ❑ 0
Is SCADA telemetry available and operational? M ❑ ❑ ❑
Is audible and visual alarm available and operational? M ❑ ❑ ❑
Comment: The pump station consists of two 12.5 MGD pumps to convey wastewater
to the North Buffalo WWTP (and after decomission they will be used to convey
wastewater to the new 20 MGD EQ basin), and five 13.5 MGD pumps to convey
wastewater to TZ Osborne for treatment through 30-inch and 54-inch force mains (a
sixth 13.5 MGD transfer pump is to be added prior to decomissioning). Approximately.
6.0 - 7.0 MGD of the influent is treated at N. Buffalo and approximately 5.0 - 8.0 MGD is
transferred to TZ Osborne for treatment. .
Grit Removal Yes No NA NE
Type of grit removal
a.Manual ❑
b.Mechanical
Is the grit free of excessive organic matter? M ❑ ❑ ❑
Is the grit free of excessive odor? M ❑ ❑ ❑
# Is disposal of grit in compliance? ❑ ❑ ❑
Comment: Two aerated grit removal basins
Primary Clarifier
Yes No NA NE
Is the clarifier free of black and odorous wastewater?
WOOD
Is the site free of excessive buildup of solids in center well of circular clarifier?
0 ❑ ■ ❑
Are weirs level?
0000
Is the site free of weir blockage?
M❑ Q ❑
Is the site free of evidence of short-circuiting?
0000
Is scum removal adequate?
M ❑ ❑ ❑
Is the site free of excessive floating sludge?
0 ❑ ❑ ❑
Is the drive unit operational?
0000
Is the sludge blanket level acceptable?
0000
Page # 5

Permit: NCO024325 Owner - Facility: North Buffalo Creek WWTP
Inspection Date: 12/18/2013 Inspection Type: Compliance Evaluation
Primary Clarifier Yes No NA NE
Is the sludge blanket level acceptable? (Approximately'/ of the sidewall depth) ❑ ❑ ❑ ■
Comment: Four rectangular primary clarifiers.
Aeration Basins Yes No NA NE
Mode of operation
Ext. Air
Type of aeration system
Diffused
Is the basin free of dead spots?
■ ❑ ❑ ❑
Are surface aerators and mixers operational?
❑ ❑ ■ ❑
Are the diffusers operational?
■ ❑ ❑ ❑
Is the foam the proper color for the treatment process?
■ ❑ ❑ ❑
Does the foam cover less than 25% of the basin's surface?
■ ❑ ❑ ❑
Is the DO level acceptable?
■ ❑ ❑ ❑
Is the DO level acceptable?(1.0 to 3.0 mg/1)
■ ❑ ❑ ❑
Comment: Four rectangular aeration tanks. Tank #2 is currently removed from
service to increase MCRT. Sodium aluminate and/or polyaluminum chloride are fed to
the aeration basin effluent to aid in phosphorus removal at the secondary clarifiers.
Secondary Clarifier
Yes No NA NE
Is the clarifier free of black and odorous wastewater?
■ ❑ ❑ ❑
Is the site free of excessive buildup of solids in center well of circular clarifier?
■ ❑ Cl ❑
Are weirs level?
■ ❑ ❑ ❑
Is the site free of weir blockage?
■ ❑ ❑ ❑
Is the site free of evidence of short-circuiting?
il. ❑ ❑ ❑
Is scum removal adequate?
■ ❑ ❑ ❑
Is the site free of excessive floating sludge?
■ ❑ ❑ ❑
Is the drive unit operational?
■ ❑ ❑ ❑
Is the return rate acceptable (low turbulence)?
■ ❑ ❑ ❑
Is the overflow clear of excessive solids/pin floc?
■ ❑ ❑ ❑
Is the sludge blanket level acceptable? (Approximately''Y4 of the sidewall depth)
❑ ❑ ❑ ■
Comment: Five circular secondary clarifiers. The #1 clarifier is currently removed from
service due to low influent flows.
Filtration (High Rate Tertiary) Yes No NA NE
Page # 6

Permit:. NC0024325 Owner - Facility: North Buffalo Creek WWTP
Inspection Date: 12/18/2013 Inspection Type: Compliance Evaluation
Filtration (High Rate Tertiary) Yes No NA NE
Type of operation: Down flow
Is the filter media present? ■ ❑ ❑ ❑
Is the filter surface free of clogging?
0000
Is the filter free of growth?
■ ❑ ❑ ❑
Is the air scour operational?
❑ ❑ ❑ ■
Is the scouring acceptable?
❑. ❑ ❑ ■
Is the clear well free of excessive solids and filter media?
❑ ❑ ❑ ■
Comment: Four traveling bridge tertiary sand filters. The filters are operated such that
two filters in service and two filters out of service due to low flows.
Disinfection -Liquid
Yes No NA NE
Is there adequate reserve supply of disinfectant?
■ ❑ ❑ ❑
(Sodium Hypochlorite) Is pump feed system operational?
■ Q ❑ ❑
Js bulk storage tank containment area adequate? (free of leaks/open drains)
■ ❑ ❑ ❑
Is the level of chlorine residual acceptable?
0110 ❑
Is the contact chamber free of growth, or sludge buildup?
■ IT ❑ ❑
Is there chlorine residual prior to de -chlorination?
0130 ❑
Comment: Sodium hypochlorite is fed manually prior to tertiary filters and prior to the
contact tank.
De -chlorination
Yes No NA NE
Type of system ?
Liquid
Is the feed ratio proportional to chlorine amount (1 to 1)? ❑ ■ .❑ ❑
Is storage appropriate for cylinders? ❑ ❑ ■ ❑
# Is de -chlorination substance stored away from chlorine containers? 11000
Are the tablets the proper size and type? ❑ ❑ ■ ❑
Comment: Sodium bisulfite fed manually.
Are tablet de -chlorinators operational? ❑ ❑ ■ ❑
Number of tubes in use?
Comment:
Effluent Sampling Yes No NA NE
Is composite sampling flow proportional? ■ ❑ ❑ ❑ .
Page # 7

Permit: NCO024325
Inspection Date: 12118/2013
Effluent Sampling
Is sample collected below all treatment units?
Is proper volume collected?
Is the tubing clean?
Owner - Facility: North Buffalo Creek WWTP
Inspection Type: Compliance Evaluation
Yes No NA NE
V ❑ ❑ ❑
■ ❑ ❑ ❑
■ ❑ ❑ ❑
# Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees Celsius)?
!
❑
❑ ❑
Is the facility sampling performed as required by the permit (frequency, sampling type representative)?
MOOD
Comment: Flow proportioned composite samples are collected of the effluent. The
sample collection time is 7 am to 7 am.
Effluent Pipe
Yes No
NA NE
Is right of way to the outfall properly maintained?
❑
❑
❑ ❑
Are the receiving water free of foam other than trace amounts and other debris?
❑
❑
❑ ❑
If effluent (diffuser pipes are required) are they operating properly?
1111110
Comment: The effluent is discharged by gravity to North Buffalo Creek, class "WS-V;
NSW" waters in the Cape Fear River Basin. There are three "stormwater" pumps at the
contact tank structure that are used to remove accumulated stormwater from the diked
facility.
Upstream / Downstream Sampling Yes No NA NE
Is the facility sampling performed as required by the permit (frequency, sampling type, and sampling location)? M ❑ ❑ ❑
Comment: The instream monitoring requirements in the permit are waived due to
Greensboro's membership in the Upper Cape Fear River Basin Association.
Solids Handling Equipment Yes No NA NE
Is the equipment operational? 0 ❑ ❑ ❑
Is the chemical feed equipment operational?
Is storage adequate?
Is the site free of high level of solids in filtrate from filter presses or vacuum filters?
Is the site free of sludge buildup on belts and/or rollers of filter press?
Is the site free of excessive moisture in belt filter press sludge cake?
The facility has an approved sludge management plan?
Comment: Primary and waste activated sludge is stored in a single gravity
thickener/holding tank prior to pumping to TZ Osborne via a 10-inch force main for final
disposal.
Standby Power
Is automatically activated standby power available?
W ❑ ❑ ❑
Page # 8

Permit: NC0024325 Owner - Facility: North Buffalo Creek WWTP
Inspection Date: 12/18/2013 Inspection Type: Compliance Evaluation
Standby Power Yes No NA NE
Is the generator tested by interrupting primary power source? ®❑ ❑ ❑
Is the generator tested under load? ❑ ❑ ❑
Was generator tested & operational during the inspection? ❑ ❑ ❑
Do the generator(s) have adequate capacity to operate the entire wastewater site? ■ ❑ ❑ ❑
Is there an emergency agreement with a fuel vendor for extended run on back-up power? m ❑ ❑ ❑
Is the generator fuel level monitored? ■ ❑ ❑ ❑
Comment: There are three generators on site.
Page # 9

North Buffalo — NC0024325, Wed 12/18 @ 11:00, Ed Osborne, 373-5913
Compliant for 1/13 thru 10/13 except for January 2013 toxicity test failure (58.1%)
Permit modified 5/16/13 to reduce monitoring frequency for BOD, TSS, NHe-N and fecal from
daily to 2/week per evaluation of 3 years of monitoring data per DWR's guidance for
"Reduction of Monitoring Frequencies for Exceptionally Performing Facilities".
Permit WQ0036639 issued 8/7/13 for conversion of existing aeration basin #5 to a 20 MGD EQ
basin and addition of a sixth 13.5 MGD transfer pump (transfer capacity of 67.5 MGD) plus a 50
gpm grinder ps to serve lab bdlg & engine/blower bdlg. Existing 30 & 54-inch force mains.
Continued operation of transfer pump station with five 13.5 MGD pumps, three 40 MGD
mechanical bar screens, 2 influent 10.5 MGD pumps (to be used as EQ pumps) and existing flow
meter.
5 to 80 MGD pumped to Osborne. 6-7 MGD discharged.
Decomission possibly in 2015.
Flow meter calibrated date?
Effluent by gravity to N Buffalo Creek. Three stormwater pumps for accumulated rainwater.
DO, pH, TRC, flow collected by TZ Osborne staff and analyzed.
16.0 MGD WWTP:
three mechanical bar screens
influent flow measurement
aerated grit removal
influent pumps (five 13.5 MG pumps to Osborne, two 10.5 MG pumps to North
4 primary settling tanks
4 aeration basins
5 secondary clarifiers
4 tertiary sand filters
Effluent flow measurement
Chlorination
Contact tank
Dechlorination

J��ceo sr^rFs
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
REG�� YW ON 4
ATLANTAFI FEDERAL CENTER
o Q
`oa 61 FORSYTH STREET
ryT'r< pNO��G� ATLANTA, GEORGIA 30303-8960
SEP 2 6 2013
CERTIFIED MAIL 7012 1010 0001 8097 1532-
RETURN RECEIPT REQUESTED
City of Greensboro
Attn: Mr. Steven Drew
Director, Water Resources Department
2602 South Elm -Eugene Street
P.O. Box 3136
Greensboro, North Carolina 27402-3136
Re: Information Request — Section 308 of the Clean Water Act
National Pollutant Discharge Elimination System Permit Nos.: NC0047384 and NCO024325
Greensboro T.Z. Osborne Wastewater Treatment Plant.and
North Buffalo Creek Wastewater Treatment Plant
Dear Mr. Drew:
Pursuant to Section 308 of the Clean Water Act (CWA), 33 U.S.C. § 1318, the U.S. Environmental
Protection Agency Region 4 hereby requests the City of Greensboro (the City) to provide the
information set forth in Enclosure A regarding the Wastewater Treatment Plants noted above and their
associated sanitary sewer collection systems. This request follows the EPA's receipt and review of the
City's November 20, 2012, response to a previous information request letter. The City is required to
respond to this information request within 30 days of its receipt of this letter. The response should be
directed to:
Ms. Laurie Jones, Enforcement Officer
Clean Water Enforcement Branch
U.S. Environmental Protection Agency, Region 4
Atlanta Federal Center
61 Forsyth Street, S.W,
Atlanta, Georgia 30303-8960
The City's response should specifically reference the particular section and number of the request
and should be organized for the purpose of clarity. In addition, all information submitted must be
accompanied by the following certification signed by a responsible City official in accordance with
40 C.F.R. § 122.22:
"I certify under penalty of law that this document and all attachments were prepared under my
direction or supervision in accordance with a system designed to assure that qualified personnel
properly gather and evaluate the information submitted. Based on my inquiry of the person or
Internet Address (URL) • http://Www.epa.gov
Recyled/Recyclable • Printed with Vegetable Oil Based Inks on Recycled Paper (Minimum 30% Poslconsumer)

persons who manage the system, or those persons directly responsible for gathering the
information, the information submitted is, to the best of my knowledge and belief, true, accurate,
and complete. I am aware that there are significant penalties for submitting false information,
including the possibility of fine and imprisonment for knowing violations."
Failure to comply with this information request may result in enforcement proceedings under Section
309 of the CWA, 33 U.S.C. § 1319, which could result in the judicial imposition of civil or criminal
penalties or the administrative imposition of civil penalties. In addition, there is potential criminal
liability for the falsification of any response to the requested information.
The City shall preserve, until further notice, all records (either written or electronic) which exist at the
time of receipt of this letter that relate to any. of the matters set forth in this letter. The term "records"
shall be interpreted in the broadest sense to include information of every sort. The response to this
information request shall include assurance that these record protection provisions were put in place as
required. No such records shall be disposed of until written authorization is received from the Chief of
the Clean Water Enforcement Branch at the U.S. EPA, Region 4.
If you believe that any of the requested information constitutes confidential business information, you
may assert a confidentiality claim with respect to such information except for effluent data. Further
details, including how to make a business confidentiality claim, are found in Enclosure B.
Also enclosed is a document entitled U.S. EPA Small Business Resow-ces-Information Sheet, which may
assist you in understanding the compliance assistance resources and tools available. However; any
decision to seek compliance assistance at this, time does not relieve the City of its obligations to the EPA
or the State of North Carolina, does not create any new rights or defenses and will not affect the EPA's
decision to pursue enforcement action.
Please feel free to contact Ms. Jones at [phone] or by email at jones.laurienepa.gov, if you have
questions regarding this information request.
Sincerely, 6y
4d-
Denisse D. Diaz, Chief
Clean Water Enforcement Branch
Water Protection Division
Enclosures
cc: Mr. Charles R. Wakild, P.E.
North Carolina Department of Environment and Natural Resources
Mr. Jeff Poupart
North Carolina Department of Environment and Natural Resources
Manager, Operations Division, Water Resources Department
City of Greensboro

y u
i
ENCLOSURE A
SSO PROGRAM
City of Greensboro, NC.
1. For purposes of this Information Request, a sanitary sewer overflow (SSO) is an overflow, spill,
release, or diversion of wastewater from the sanitary sewer collection system. SSOs include
overflows or releases of wastewater that reach waters of the United States (U.S.); overflows or
releases of wastewater that do not reach waters of the U.S.; and wastewater backups into
buildings that are caused by blockages or flow conditions in a sanitary sewer other than a
building lateral. Wastewater backups into buildings caused by a blockage or other malfunction of
a building lateral that is privately owned is not an SSO.
Provide a listing of all SSOs that occurred from November 2012 to the present. For each SSO
provide the following:
a. Date(s) of the SSO;
b. Time (and Date if other than a. above) when the City was notified that the SSO event
occurred;
C. Time (and Date if other than a. above) when the City•(or contractor) crew responded to
the SSO;
d. Time (and Date if other than a. above) when the SSO ceased;
e. Time (and Date if other than a. above) when corrective action was completed;
f. Location of the SSO, including source (pump station, manhole, etc.);
g. Ultimate destination of the SSO; such as surface waterbody (by name, if available), storm
drain leading to surface watdrbody (by name, if available), dry land, building, etc.;
h. Volume of the SSO;
i. Cause of the SSO such as grease, roots, other blockages, wet weather (infiltration and
inflow), loss of power at pump station, pump failure, etc.;
j. Corrective actions taken to stop the SSO; and
k. Corrective actions taken to prevent this or similar SSOs in the future.
If available, please provide the above information in a Microsoft compatible spreadsheet format.
2. As reported by the City to the EPA on November 20, 2012, the City has seven SSQ locations
which have had two or more SSOs in a rolling 12 month period in 2011 or later:
1200 North Elm Street
1402 Briar Cliff Drive
1900 Sharon Brook
201 Berryman Street
2604 Yanceyville Street
4303 Green Point Dr1Y
604 Ross Avenue
Please describe any actions that have been taken or are planned, including a timeframe for
planned actions, to address the causes of SSOs in these specific locations and to prevent future
SSO recurrances at these locations.

3. 'rhe.EPA located the City's Fats, Oils and Grease (FOG) Control Policy at
http://www.j)rcensbot-o-ne.gov/mcxlules/showclocunicnt.asp.K'?(Iocumcntid=3658. If this is the
current FOG Control Policy, please provide the date or issuance. lr this is not the current FOG
Control Policy, please provide a copy of the City's current FOG Control Policy.
4. If the City has a formal Gravity Line Preventive Maintenance Program (GLPMP) which details
the schedule for and prioritization of preventative maintenance on the City's sanitary sewer
collection system, please provide a copy of the GLPMP and the date of the GLPMP's issuance.

ENCLOSURE B
RIGHT TO ASSERT BUSINESS CONFIDENTIALITY CLAIMS
(40C.F.R. Part2)
Except for effluent data, you may, if you desire, assert a business confidentiality claim as to any or all of
the information that EPA is requesting from you. The EPA regulation relating to business confidentiality
claims is found at 40 C.F.R. Part 2.
If you assert such a claim for the requested information, EPA will only disclose the information to the
extent and under the procedures set out in the cited regulations. If no business confidentiality claim
accompanies the information, EPA may make the information available to the public without any further
notice to you.
40 C.F.R. §2.203(b). Method and time of asserting business confidentiality claim. A business which
is submitting information to EPA may assert a business confidentiality claim covering the information
by placing on (or attaching to) the information, at the time it is submitted to EPA, a cover sheet, stamped
or typed legend, or other suitable form of notice employing language such as "trade secret,"
"proprietary," or "company confidential." Allegedly confidential portions of otherwise non -confidential
documents should be clearly identified by the business, and may be submitted separately to facilitate
identification and handling by EPA. If the business desires confidential treatment only until a certain
date or until the occurrence of a certain event, the notice should so state.

r
City
m
North
November 7, 2013
of Greensboro
Carolina Water Resources Department
CERTIFIED MAIL -RETURN RECEIPT
ATTN: CENTRAL FILES
North Carolina Department of Environment and Natural Resources
Division of Water Resources
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
RE: Amended July 2013 DMR-City of Greensboro North Buffalo POTW
NPDES Permit NCO024325
Effluent Addendum Page Submittal/Addition of Mercury Value for 7-29-13
To Whom It May Concern:
Enclosed please find an amended Effluent Addendum Page for the July 2013 North Buffalo DMR submittal. The
mercury value for July 29, 2013 was inadvertently left off of the DMR.
This clerical oversight will result in a change in the monthly average value for mercury. Please note that all of the
other monitoring and analytical data submitted in the original DMR was correct and complete and the
addition of the mercury value for July 29, 2013 does not change the POTW compliance status.
We regret any inconvenience this may have caused. If you have questions or need additional information, please do
not hesitate to contact me at 336-433-7229 or by email at [e-mail].
Sincerely,
Martha E. Groome
Laboratory and Industrial Waste Section Supervisor
cc: Don Howard, Water Reclamation Manager [with enclosure]
Lori W. Cooper, T. Z. Osborne Operations Superintendent [with enclosure]
Ed Osborne, North Buffalo ORC [with enclosure]
"M=ik Mickey, DWR Winston-Salem Regional Office [with enclosure]
Shameka Collins, City of Greensboro Compliance Specialist [with enclosure]

,���N'pED
11-�-2013
I:
EFFLUENT ADDENDUM
NPDES PERMIT NO. NCO024325
DISCHARGE NO. 001
MONTH July
YEAR 2013
FACILITY NAME NORTH BUFFALO WASTEWATER TREATMENT PLANT CLASS
IV COUNTY
GUILFORD
OPERATOR IN RESPONSIBLE CHARGE (ORC)
NATHAN E. OSBORNE
GRADE IV PHONE
[phone]
CERTIFIED LABORATORIES (1)
T.Z. OSBORNE LABORATORY (2)
MERITECH, INC.
CHECK BOX IF ORC HAS CHANGED ❑
PERSON(S) COLLECTING SAMPLES
AUTOMATIC SAMPLERS
Mail ORIGINAL and ONE COPY to:
ATTN: CENTRAL FILES
X
/
DIVISION OF WATER QUALITY
'(SfGNArLTRE OF OPERATOR IN RESP2DWLE
CHARGE)
DATE
1617 MAIL SERVICE CENTER
BY THIS SIGNATURE, I CERTIFY THAT THIS REPORT IS
RALEIGH, NC 27699-1617
ACCURATE AND COMPLETE TO THE BEST OF MY KNOWLEDGE.

i'
Mickey, Mike
From: Groome, Martie <[e-mail]>
Sent: Wednesday, November 13, 2013 9:26 AM
To: Mickey, Mike
Cc: Goots, Alicia; Hubbert, Bob
Subject: RE: T.Z. Osborne
Attachments: July 2013 Amended DMR NB.docx, July 2013 Amended DMR TZO.docx
Yes, we accidently left the mercury off the DMR that week for both plants. Meritech does a turn -key job on mercury for
us. We do not even know when they come to sample, but they have never missed a sample in all these years so we
knew it must be us. We have put an extra check in place so this will not happen again.
The amended DMRs for both plants have already been submitted to Central Files and I mailed you a copy as well. Yours
went downtown to our mail room yesterday afternoon. I have attached the cover letters for each DMR.
Thanks again. Sorry for the inconvenience.
Martie
Martie Groome, Laboratory and Industrial Waste Section Supervisor
Water Resources Department
City of Greensboro
Phone: [phone] Fax: [phone]
Box 3136, Greensboro NC 27402-3136
www.greensboro-nc.gov
From: Mickey, Mike [mailto:mike.mickey ncdenr.gov]
Sent: Wednesday, November 13, 2013 8:06 AM
To: Groome, Martie
Subject: FW: T.Z. Osborne
Congrats on the "pink" bioassay. Any resolution on the Hg monitoring issue? Thanks, Mike.
From: Mickey, Mike
Sent: Tuesday, November 05, 2013 3:36 PM
To: 'Groome, Martie'
Subject: T.Z. Osborne,
Martie —The computer noted a missing weekly mercury value at Osborne for the split week 7/29 — 8/2/13.
Just checking to see if it was inadvertently left off the DMR. Let me know what you find.
Thanks, Mike.
Mike Mickey
M i ke.IVl ickev@ NCDEN R.eov
NC Division of Water Resources
585 Waughtown Street
Winston-Salem, NC 27107'
Phone: [phone]

FAX: [phone]
-------------------------------------------------------
-------------------------------------------------------
Please note that email sent to and from this address is subject
to the North Carolina Public Records Law and may be disclosed to third
parties.
2

r
.City
, J North
November 7, 2013
of Greensboro
Carolina Water Resources Department
CERTIFIED MAIL -RETURN RECEIPT
ATTN: CENTRAL FILES
North Carolina Department of Environment and Natural Resources
Division of Water Resources
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
RE: Amended July 2013 DMR-City of Greensboro T. Z. Osborne POTW
NPDES Permit NCO047384
Effluent Addendum Page Submittal/Addition of Mercury Value for 7-29-13
To Whom It May Concern:
Enclosed please find an amended Effluent Addendum Page for the July 2013 T. Z. Osborne DMR submittal. The
mercury value for July 29, 2013 was inadvertently left off of the DMR.
This clerical oversight will result in a change in the monthly average value for mercury. Please note that all of the
other monitoring and analytical data submitted in the original DMR was correct and complete and the
addition of the mercury value for July 29, 2013 does not change the POTW compliance status.
We regret any inconvenience this may have caused. If you have questions or need additional information, please do
not hesitate to contact me at 336-433-7229 or by email at [e-mail].
Sincerely,
Martha E. Groome
Laboratory and Industrial Waste Section Supervisor
cc: Don Howard, Water Reclamation Manager [with enclosure]
Lori W. Cooper, T. Z. Osborne Operations Superintendent [with enclosure]
Ed Osborne, North Buffalo ORC [with enclosure]
Mike Mickey, DWR Winston-Salem Regional Office [with enclosure]
Shameka Collins, City of Greensboro Compliance Specialist [with enclosure]

Limit Violations PMonitoringVSatations Repotting Violations other violations
Permit C002�325 Details._ SDC: AD: Dei3ils J blonitoring Report 062093 m Details...
Facility North Buffalo GreeKW4rWJTP Details... Region; Irinstan-Salem County. Guilford
Owner. City ofGreensboro Ptaintain... Incident Details_.. Inspect.Dt: Details —
Facility Repotted As: k0scompliant O Nan-ti ompiiant O NotRepotted Dis signed RepoitType: Dt�1R
ameter
Mes. Freq
"Date
P,fanual
'Description
�aa
F.emave
...
Initiate ND'L..
nt...
Save ? Rac..
SDC
Action
Comment
bonaceau_.
2 X week
0610112013
❑
Frequency Viola_
El
No Action, BIMS Cai...
Data is on Dlu1R. Not entered into syste...
s Nitrate•T_i
Weeklyly
Frequericy,Viola:Y
� . - ,
CJo Adfon;:BIMS`Cal:i:
)ata is an DMR- Not entered into system]
Ij Help Finish Cancel
I
I} 2 Monitoring Violations found. .Ready �— SID: VLtJIP

IVED'
. Of ENR
EN.C.
2 2013
��®E�
SalemOffice
North Carolina Department of Environment and Natural Resources
Division of Water Resources
Water Quality Programs
Pat McCrory Thomas A. Reeder
John E. Skvarla, III
Governor Director
Secretary
August 7, 2013
Mr. Elijah Williams, Project Manager
City of Greensboro
Department of Water Resources
2602 S. Elm -Eugene Street
Greensboro, North Carolina 27406
SUBJECT: Permit No. WQ0036639
City of Greensboro, Department of Water Resources
North Buffalo Creek Transfer Pump Station
Guilford County
Dear Mr. Williams:
In accordance with your permit application received July 12, 2013, and additional
information received by the Division of Water Resources (Division), we are forwarding herewith
Permit No. WQ0036639 dated August 7, 2013, to the City of Greensboro, Department of Water
Resources for the construction and operation of the subject wastewater collection system.
This Permit shall be effective from the date of issuance until rescinded, and shall be subject
to the conditions and limitations as specified therein.
If any parts, requirements, or limitations contained in this permit are unacceptable, you have
the right to request an adjudicatory hearing upon written request within 30 days following receipt
of this permit. This request must be in the form of a written petition, conforming to Chapter
150B of North Carolina General Statutes, and filed with the Office of Administrative Hearings,
6714 Mail Service Center, Raleigh, NC 27699-6714. Unless such demands are made this permit
shall be final and binding.
Upon completion of construction and prior to operation of this permitted facility, a
certification must be received from a professional engineer certifying that the permitted facility
has been installed in accordance with the approved plans and -specifications. Mail the
Certification to the Division of Water Resources, Water Quality Programs, 1617 Mail Service
Center, Raleigh, North Carolina 27699-1617. (Engineer's Certification Form is attached.)
One set of approved plans and specifications is being forwarded to you.
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Location: 512 N. Salisbury St, Raleigh, North Carolina 27604
Phone: [phone] \ FAX: [phone]
Internet: www.ncwaterguality.org
NortbCarolina
N— awrally
An Equal Opportunity \ Affirmative Action Employer

Mr. Elijah Williams, Project Manager
August 7, 2013
Page 2
If you need additional information concerning this matter, please contact Ken Pohlig,
P.E., State Review Engineer, at [phone] or Seth Robertson, P.E. at [phone].
Sincerely
Thomas A. Reeder
Iz-
kp/sr
cc: James Butcher, P.E., CDM Smith, 5400 Glenwood Avenue, Suite 300, Raleigh, NC 27612
Guilford County Health Department
DWQ Winston-Salem Regional Office, Surface Water Protection (NC0047384)
Permit Application File WQ0036639

'' I
NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
RALEIGH
WASTEWATER COLLECTION PERMIT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North
Carolina as amended, and other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
City of Greensboro
Guilford County
FOR THE
Continued operation of the North Buffalo Creek Transfer Pump Station located at the de-
commissioned North Buffalo Creek WWTP, consisting of three (3) 40 MGD mechanical bar
screens, five (5) 13.5 MGD transfer pumps, a transfer flow meter, two (2) influent 10.5 MGD
pumps (to be utilized as equalization pumps), an existing flow meter utilized as an EQ influent
flow meter,
And the conversion of the existing Aeration Basin No. 5 to a 2.0 MG Equalization Basin, an EQ
effluent flow meter, the addition of a sixth (6) 13.5 MGD transfer pump (increasing transfer firm
pumping capacity to 67.5 MGD), a duplex 50 gpm grinder pump station with on -site audible and
visual alarms and approximately 600 linear feet of 21/a-inch force main (to serve the Laboratory
Building and the Engine and Blower Building at the de -commissioned North Buffalo Creek
WWTP),
And continued operation of dual 30-inch and 54-inch force mains from the North Buffalo Creek
Transfer Pump Station to the T.Z. Osborne Water Reclamation Facility (originally permitted
under Authorization -to -Construct No. 024325A01, issued October 6, 2005),
serving the City of Greensboro; with all flow tributary to the North Buffalo Creek de-
commissioned WRF now transferred to into the T.Z. Osborne Water Reclamation Facility
(NC0047384) sewerage system pursuant to the application received on July 12, 2013, and
subsequent additional information received by the Division, and in conformity with the project
plans, specifications, and other supporting data subsequently filed and approved by the
Department of Environment and Natural Resources and considered a part of this permit.
This permit shall be effective from the date of issuance until rescinded, and shall be
subject to the following specified conditions and limitations:
1. This permit shall become voidable unless the facilities are constructed in accordance with the
conditions of this permit, the approved plans and specifications, and other supporting data.

City of Greensboro, Department of Water Resource
August 7, 2013
Permit No. WQ0036639
Page 2
2. This permit is effective only with respect to the nature and volume of wastes described in the
application and other supporting data.
3. The wastewater collection facilities shall be properly maintained and operated at all times.
The Permittee shall maintain compliance with an individual system -wide collection system
permit for the operation and maintenance of these facilities as required by 15A NCAC 2T
.0400. If an individual permit is not required, the following performance criteria shall be met
as provided in 15A NCAC 2T .0400:
(a) The sewer system shall be effectively maintained and operated at all times to prevent
discharge to land or surface waters, and to prevent any contravention of groundwater
standards or surface water standards.
(b) A map of the sewer system shall be developed and actively maintained.
(c) An operation and maintenance plan including pump station inspection frequency,
preventative maintenance schedule, spare parts inventory and overflow response shall
be developed and implemented.
(d) Pump stations that are not connected to a telemetry system (i.e., remote alarm system)
small be inspected by the permittee or its representative every day (i.e., 365 days per
year). Pump stations that are connected to a telemetry system shall be inspected at
least once per week.
(e) High -priority sewers shall be inspected by the permittee or its representative at least
once every six -months and inspections are documented.
(f) A general observation by the permittee or its representative of the entire sewer system
Shall be conducted at least once per year.
(g) Overflows and bypasses shall be reported to the appropriate Division regional office
in accordance with 15A NCAC 02B .0506(a), and public notice shall be provided as
required by G.S. 143-215.1C.
(h) A Grease Control Program shall be established as follows:
(i) For publicly owned collection systems, the Grease Control Program shall
include at least bi-annual distribution of educational materials for both
commercial and residential users and the legal means to require grease
interceptors for new construction and retrofit, if necessary, of grease
interceptors at existing establishments. The plan shall also include legal means
for inspections of the grease interceptors, enforcement for violators and the
legal means to control grease entering the system from other public and
private satellite sewer systems.
(ii) For privately owned collection systems, the Grease Control Program shall
include at least bi-annual distribution of grease education materials to users of
the collection system by the permittee or its representative.
(iii) Grease education materials shall be distributed more often than required in
Parts (i) and (ii) of this Subparagraph if necessary to prevent grease -related
sanitary sewer overflows.
(i) Right-of-ways and easements shall be maintained in the full easement width for
personnel and equipment accessibility.

.A
City of Greensboro, Department of Water Resource
August 7, 2013
Permit No. WQ0036639
Page 3
(j) Documentation shall be kept for Subparagraphs (a) through (i) for a minimum of
three years with exception of the map, which shall be maintained for the life of the
system.
4. The sewage and wastewater collected by this system shall be treated in the T.Z. Osbome
Water Reclamation Facility (NC0047384) sewerage system prior to being discharged into
receiving stream.
5. This permit is not transferable. In the event there is a desire for the facilities to change
ownership, or there is a name change of the Permittee, a formal permit request must be
submitted to the Division accompanied by an application fee, documentation from the parties
involved, and other supporting materials as may be appropriate. The approval of this request
will be considered on its merits and may or may not be approved.
6. Construction of the sewers, pump station(s) and force main shall be scheduled so as not to
interrupt service by the existing utilities nor result in an overflow or bypass discharge of
wastewater to the surface waters of the State.
7. A copy of the approved plans and specifications shall be maintained on file by the Permittee
for the life of the wastewater collection facilities.
8. Upon completion of construction and prior to operation of this permitted facility, a
certification must be received from a professional engineer certifying that the permitted
facility has been installed in accordance with this permit, the approved plans and
specifications, and other supporting materials. If this project is to be completed in phases
and partially certified, you shall retain the responsibility to track further construction
approved under the same permit, and shall provide a final certificate of completion once the
entire project has been completed. Mail the Certification to the Division of Water Resources,
Water Quality Programs, 1617 Mail Service Center, Raleigh, North Carolina 27699-1617.
(Engineer's Certification Form is attached.)
9. Failure to abide by the conditions and- limitations contained in this- permit may subject the
Permittee to an enforcement action by the Division, in accordance with North Carolina
General Statute 143-215.6A to 143-215.6C.
10. The issuance of this permit does not exempt the Permittee from complying with any and all
statutes, rules, regulations, or ordinances that may be imposed by other government agencies
(i.e., local, state, and federal) having jurisdiction, including but not limited to applicable river
buffer rules in 15A NCAC 2B .0200, soil erosion and sedimentation control requirements in
15A NCAC Chapter 4 and under the Division's General Permit NCG010000, and any
requirements pertaining to wetlands under 15A NCAC 2B .0200 and 15A NCAC 2H .0500.
11. The Permittee shall provide for the pump station and force main the following items:
(a) Pump Station Reliability:

City of Greensboro, Department of Water Resource
August 7, 2013
Permit No. WQ0036639
Page 4
(i) Pump stations, except when exempted by Subparagraph 0)(2) of 15A NCAC
02T.0305, shall be designed with multiple pumps such that peak flow can be
pumped with the largest pump out of service.
(ii) A standby power source or pump is required at all pump stations except for
those pump stations subject to Subparagraph 0)(2) of 15A NCAC 02T.0305.
Controls shall be provided to automatically activate the standby source and
signal an alarm condition.
(iii) As an alternative to Part (ii) for pump stations with an average daily design
flow less than 15,000 gallons per day as calculated using 15A NCAC
02T.0114, a portable power source or pumping capability may be utilized. It
shall be demonstrated to the Division that the portable source is owned or
contracted by the permittee and is compatible with the station. If the portable
power source or pump is dedicated to multiple pump stations., an evaluation of
all the pump stations' storage capacities and the rotation schedule of the
portable power source or pump, including travel timeframes, shall be provided
in the case of a multiple station power outage.
(iv) As an alternative to Part (ii) for pump or vacuum stations connecting a single
building to an alternative sewer system, wet well storage requirements shall be
documented to provide 24-hours worth of wastewater storage or, exceed the
greatest power outage over the last three years or the documented response
time to replace a failed pump, whichever is greater. Documentation shall be
required pursuant to the permit application.
(v) All pump stations designed for two pumps or more shall have a telemetry
system to provide remote notification of a problem condition to include power
failure and high water alarm.
(vi) High water audio and visual alarm.
(b) Pump stations shall have a permanent weatherproof sign stating the pump station
identifier, 24-hour emergency number and instructions to call in case of emergency.
Simplex pump or vacuum stations serving a single-family residence shall have a
placard or sticker placed inside the control panel with a 24-hour emergency contact
number..
(c) Screened vents for all wet wells.
(d) The public shall be restricted access to the site and equipment.
(e) Air relief valves shall be provided at all high points along force mains where the
vertical distance exceeds ten feet.
12. In the event that the facilities fail to perform satisfactorily, including the creation of nuisance
conditions, the Permittee shall take immediate corrective action, including those that may be
required by this Division, such as the construction of additional or replacement wastewater
collection facilities.
13. The facilities shall be constructed in accordance with the requirements of the North Carolina
Sedimentation Pollution Control Act.

.' City of Greensboro, Department of Water Resource
August 7, 2013
Permit No. WQ0036639
Page 5
14. If applicable, the Operational Agreement between the Permittee and the Environmental
Management Commission is incorporated herein by reference and is made a condition of this
Permit. Noncompliance with the terms of the Operational Agreement may subject the
Permittee to an enforcement action by the Division in accordance with North Carolina
General Statute 143-215.6A to 143-215.6C. A copy of the Articles of Incorporation,
Declarations, and Bylaws that have been properly filed shall be submitted with the engineer's
certification prior to operation.
15. Any abandoning of the existing facilities must be done in accordance with the requirements
of the Division's Winston-Salem Regional Office.
16. Noncompliance Notification:
The Permittee shall verbally report to a water quality staff member at the Winston-Salem
Regional Office, telephone number [phone], as soon as possible, but in no case more
than 24 hours or on the next working day following the occurrence or first knowledge of the
occurrence of either of the following:
(a) Any process unit failure, due to known or unknown reasons, that render the facility
incapable of adequate wastewater transport such as mechanical or electrical failures
of pumps, line blockage or breakage, etc.
(b) Any failure of a pumping station or sewer line resulting in a by-pass directly to
receiving waters without treatment of all or any portion of the influent to such station
or facility.
Voice mail messages or faxed information is permissible but this shall not be considered as
the initial verbal report. Overflows and spills occurring outside normal business hours may
also be reported to the Division of Emergency Management at telephone number (800) 858-
0368 or [phone]. Persons reporting any of the above occurrences shall file a spill
report by completing Part I of Form CS-SSO (or the most current Division approved form),
within five days following first knowledge of the occurrence. This report shall outline the
actions taken or proposed to ensure that the problem does not recur. Per Condition I(2), Part
II of Form CS-SSO (or the most current Division approved form) can also be completed to
show that the SSO was beyond control.
Permit issued is the I %y f August 2013
NO CENVIRONMENTAL MANAGEMENT COMMISSION
Thomas A. Reeder, Director
Division of Water Resources
By Authority of the Environmental Management Commission
Permit No. WQ0036639

City of Greensboro, Department of Water Resources
Permit No. WQ0036639
North Buffalo Creek Transfer Pump Station
Issued August 7, 2013
ENGINEER'S CERTIFICATION
I, , as a duly registered Professional Engineer in the
State of North Carolina, having been authorized to observe (periodically/weekly/full time) the
construction of the North Buffalo Creek Transfer Pump Station serving the City of Greensboro,
located in Guilford County, hereby state that to the best of my abilities, due care and diligence
was used in the observation of the following construction:
conversion of the existing Aeration Basin No. 5 to a 2.0 MG Equalization Basin, an EQ effluent
flow meter, the addition of a sixth (6) 13.5 MGD transfer pump, a duplex 50 gpm grinder pump
station with on -site audible and visual alarms and approximately 600 linear feet of 21/a-inch force
main (to serve the Laboratory Building and the Engine and Blower Building at the de-
commissioned North Buffalo Creek WWTP), and in conformity with the project plans,
specifications, and other supporting data subsequently filed and approved by the Department of
Environment and Natural Resources.
I certify that the construction of the above referenced project was observed to be built within
substantial compliance and intent of the approved plans and specifications.
Signature Registration No.
Date
Mail this Certification to: Division of Water Resources
Water Quality Programs
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Note: If the wastewater collection permit was issued to a private entity under an Operational
Agreement with the Environmental Management Commission, then a copy of the Articles
of Incorporation, Declarations, and Bylaws that have been properly filed with the
applicable County's Register of Deeds shall be submitted with this certification.

Mickey, Mike
From:
Pohlig, Ken
Sent:
Tuesday, June 04, 2013 10:52 AM
To:
Mickey, Mike
Subject:-
RE: TZ Osborne AtC # 047384A03
Thanks Mike.
After talking this over with Seth Robertson here, this all sounds good.
It is our intention to require Greensboro to submit a Pump Station/Force Main permit application for the active pumping
(influent pumps) at the North Buffalo Creek plant (which would include the new/converted 2.0 MG EQ Basin) and the
force main to the TZ Osborne WWTP. In this way, what is left at the old N. Buffalo Creek plant will still have a permit
(sewer PS/FM permit) associated with it.
We recommend that they associate a total permitted flow with this permit, which of course will all now be tributary to
the TZ Osborne WWTP.
2 more questions:
(1) Does all this seem reasonable to you?
(2) We assume that the force main between the North Buffalo Creek plant to the TZ Osborne plant is existing. Do
you know:the permit that was constructed under?
Ken Pohlig
DWQ, Infrastructure Finance Section
[phone]
From: Mickey, Mike
Sent: Monday, June 03, 2013 2:54 PM
To: Pohlig, Ken
Subject: RE: TZ Osborne AtC # 047384A03
Ken —See Don's email below concerning Phase's-2 and 3 and my answers in red to your other questions. Mike.
----------------------------------------------------------------------------
From: Howard, Don [mailto: Donald. [e-mail]]
Sent: Monday, June 03, 2013 2:32 PM
To: Mickey, Mike
Cc: Groome, Martie
Subject: RE: TZ Osborne AtC # 047384A03
. Good afternoon Mike ---per the thread below I am writing to provide some info on Phase 2 & 3
The short answer is that Phase 2 & 3 are both set for construction phase services in 2014 if current
plans remain in place. That can change depending on current legislative endeavors and regulatory
responses..
For now, the calendar shows early 2014 for Phase 2, this includes the main thrust of aeration basin
and clarifier construction, and existing aeration rehab.

Mickey, Mike
From: Mickey, Mike .
Sent: Monday, June 03, 2013 2:54 PM
To: Pohlig; Ken
Subject: RE: TZ Osborne AtC # 047384A03
Ken —See Don's email below concerning Phase's 2 and 3 and my answers in red to.your other questions. Mike.
From: Howard, Don [ma ilto: Donald. Howard @greensboro-nc.gov]
Sent: Monday, June 03, 2013 2:32 PM
To: Mickey, Mike
Cc: Groome, Martie
Subject: RE: TZ Osborne AtC # 047384A03
Good afternoon Mike --per the thread below I am writing to provide some info on Phase 2 & 3.
The short answer is that Phase 2 &.3 are both set for construction phase services in 2014. if current
plans remain in place. That can change depending on current legislative endeavors and regulatory
responses:
For now, the calendar shows early 2014 for Phase 2, this includes the main thrust of aeration basin
and clarifier construction, and existing aeration rehab.
Phase 3 is set for mid 2014 and includes added chlorine contact tanks, tertiary filter rehabilitation,
chemical feed upgrades, and scum handling.
Hope this helps!
Thanks!
Don H.
From: Pohlig, Ken
Sent: Monday, June 03, 2013 12:05 PM
To: Mickey, Mike
Subject: RE: TZ Osborne AtC # 047384A03
Many thank Mike.
Can I ask you a question: How do the 3 phases work?
Their ATC letter indicates that all the N. Buffalo flow will bepumped over to the TZ Osborne plant with the completion
of Phase.1..., but this will happen prior to the TZ Osborne plant officially being expanded to 69 56 MGD, correct? You
are correct. Osborne rcan handle the additional flow. Their problem is the impending TN annual mass limit that is
effective in 2016. However,,the TN limit is.delayed .until 2018 if they obtain an AtC by 12/31/2016. See below:
From footnote 2 of Section A.(3) of the draft permit: Per the Jordan Lake Wastewater Discharge Rule (15A NCAC 02B .0270) as
modified by North Carolina Session Law 2011-394 (HB119), the annual mass Total Nitrogen limit shall be effective beginning with calendar year
2016, unless the discharger has received by December 31, 2016, an authorization-to=construct permit for construction, installation, or alteration
of the treatment works for purposes of complying with this limit, in which case the limit shall be effective beginning with calendar year 2018.
1

So if an ATC is obtained by 12/31/2016 for purposes of complying with the limit, the effective date for the limit
is extended to the beginning of calendar year 2018. This is the driving force in the three AtUs. Greensboro does not
want to retrofit N. Buffalo to meet TN, so they will decommission it and just upgrade Osborne.
As you indicate flow -wise, the total combined flows from both WWTP will be 19.8 + 6.1 MGD = 25.9 MGD average. So,
the TZ Osborne plant should be able to easily handle 1/1 peak flows from both plants no problem, until it is expanded in
Phases 2 & 3. (right?). Correct. The additional 6 MGD from N. Buffalo should not be a problem at the 40 MGD Osborne.
According to what you know, how long before Phases 2 and 3-actually occur? See Don's email above.
Ken
From: -Mickey, Mike
Sent: Monday, June 03, 2013 11:34 AM
To: Pohlig, Ken '
Subject: TZ Osborne AtC # 047384A03
Ken — WSRO has not issues with issuance of the above AtC for "Package 1" which involves decommissioning the N.
Buffalo POTW and adding a 4.5 MGD EQ tank at T.Z. Osborne.
Osborne is permitted at 40.0 MGD and should have no trouble accepting the additional flow from N. Buffalo based on
the.following flow average for February 2012 through January 2013.
T.Z. Osborne 12 month average = 19.8 MGD
N. Buffalo 12 month average = 6.1 MGD.
Holler back if any questions. Mike.
Mike Mickey
Mike. [e-mail]
NC Division of Water Quality
585 Waughtown Street
Winston-Salem, NC 27107
Phone: [phone] . .
FAX: [phone]

boa
<a.ro.►j
NCDENR
North Carolina Department of Environment and Natural Resources
Pat McCrory
Governor
CERTIFIED MAIL: 7007 1490 0004 5533 7476
RETURN RECEIPT REQUESTED
Mr. Steve Drew
Operations Division Manager
City Of Greensboro
P.O. Box 3136
Greensboro, NC 27402-3136
Division of Water Quality
Charles Wakild, P. E.
Director
April 3, 2013
SUBJECT: NOTICE OF VIOLATION: NOV-2013-TX-0026
Whole Effluent Toxicity (WET) Testing
Copper and Zinc Action Level Policy
NPDES Permit No. NCO024325
North Buffalo Creek WWTP
Guilford County
Dear Mr. Drew:
John E. Skvarla III
Secretary
This is to inform you that a review of your toxicity self -monitoring report form for the month of January 2013
indicates a violation of the toxicity limitation specified in your NPDES Permit. You should undertake necessary actions to
eliminate or reduce effluent toxicity to acceptable levels.
In addition, this correspondence contains important information on the Division's Copper and Zinc Action Level
Policy which is triggered by two or more toxicity limit violations that occur during the toxicity testing quarter specified
by the toxicity testing special condition of your NPDES Permit. Attachments addressing policy implementation and a
copy of the Division's Toxicity Reduction Guidance have been included with this Notice of Violation.
You should initiate follow-up toxicity testing upon a single WET test failure which occurs during the toxicity
testing quarter.
Your facility is currently monitoring for copper and/or zinc and the data indicate that the levels of copper/zinc in
your effluent have the potential to cause an exceedance of the NC water quality action level for this (these) parameter(s) in
your receiving stream during low stream flow conditions. The policy states that whenever a facility experiences two or
more toxicity limit violations during a toxicity testing quarter, the NPDES Permit will be modified to include numeric
limits for copper and/or zinc UNLESS the permittee provides one or more of the following:
Environmental Sciences Section
1621 Mail Service Center, Raleigh, North Carolina 27699-1621
Location: 4401 Reedy Creek Road, Raleigh, North Carolina 27607
Phone: [phone] FAX: [phone]
Intemet: http://l12o.enr.state.nc.uslesb/
Nor tfiCarolina
Natmrallff
An Equal Opportunity 1 Affirmative Action Employer

1. Instream measurements of dissolved metal during low flow conditions that demonstrate compliance with
the Action Level standard
2. A revision of the prospective permit limit using improved inputs that in concert with existing or
additional monitoring data demonstrates compliance with the Action Level standard
3. Toxicity Identification Evaluation (TIE) results that definitively rule out copper and/or zinc as causes of
effluent toxicity
4. Demonstration by an alternative method approved by the Division and EPA that copper and/or zinc is not
the cause of toxicity
The Division has evaluated your copper and/or zinc monitoring data. The Division has also developed a
prospective NPDES permit limit based on your facility's instream waste concentration, the copper and/or zinc action level
criterion and a translator procedure. Based on this data your prospective copper permit limit is 17.3 µg/L.
The permittee, upon experiencing two or more toxicity limit violations during a toxicity testing quarter
must either provide DWQ with:
a) Written notification indicating acceptance of the prospective copper and/or zinc permit
limit. Notification is due within 30 days after the date of the second WET Notice of
Violation.
OR
b) Written notification indicating your choice of option(s) as noted on page one of this
correspondence. Notification is due within 30 days after the date of the second WET Notice of
Violation. DWQ approval of options 1-3 (previous page) is not necessary as the Division expects
work to rule out copper and/or zinc as causative effluent toxicants to begin immediately upon the
second WET permit limit violation.
Written notification (a or b above) shall be sent to:
NC Division of Water Quality
Environmental Sciences Section
Aquatic Toxicology Unit
1621 Mail Service Center
Raleigh, NC 27699-1621
Please note that if you choose item b) above, you will be given nine months to submit documentation that
eliminates copper and/or zinc as causative effluent toxicants. Your final report should be comprehensive and include all
data used to support your conclusion(s). Should the data indicate copper and/or zinc as the source of effluent toxicity or if
Environmental Sciences Section
1621 Mail Service Center, Raleigh, North Carolina 27699-1621
Location: 4401 Reedy Creek Road, Raleigh, North Carolina 27607
Phone: [phone] FAX: [phone]
Internet: http:1(h2o.enr.state.nc.us1esbl
olle
NorthCarolina
NGltui lly
An Equal Opportunity 1 Affirmative Action Employer

the data are inconclusive as to copper and/or zinc's role as a toxicity source, then the NPDES Permit will be reopened and
the metal limits specified above will be applied to the permit. The report is due nine months after the date of the second
WET Notice of Violation.
Three copies of the final report shall be submitted to:
North Carolina Division of Water Quality
Environmental Sciences Section
Aquatic Toxicology Unit
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
You should consider submitting the above correspondence certified mail.
Failure to notify DWQ of your acceptance of a copper and/or zinc limit, failure to notify DWQ of your option
selection or failure to make acceptable demonstration to DWQ that copper and/or zinc are not causative effluent toxicants
within the stated time frames will result in reopening of the NPDES Permit to include copper and/or zinc numeric
limitations, as appropriate.
If the effluent is toxic, then we expect work to commence immediately with toxic effluent samples. Failure to
initiate work with toxic effluent samples during the study period is unacceptable and will be considered a failure to make
acceptable demonstration as cited above. We recommend a minimum of three separate sampling events during the nine
month period to definitively rule out copper and/or zinc as causative effluent toxicants.
Please note that your actions to notify DWQ of prospective limit acceptance or to notify DWQ of plan option(s)
and subsequent submission of a plan are contingent upon two or more toxicity NPDES permit limit violations occurring
during a toxicity testing quarter.
Also note that the WET limit will remain in your NPDES permit regardless of whether metals are the source of
effluent toxicity. The data resulting from your actions to disprove copper and/or zinc as sources of effluent toxicity will
determine whether NPDES Permit limits will be assigned for these parameters. You are responsible for initiating actions
to address these issues.
You may consider entering into a Special Order by Consent (SOC) with DWQ. A SOC provides regulatory relief
for specific NPDES permit limit violations and, if signed, will contain a requirement to conduct a Toxicity Reduction
Evaluation. The SOC will contain a compliance schedule, stipulated penalties for failing to meet milestone activity dates
and may contain upfront penalties to settle past permit limit violations.
Environmental Sciences Section
1621 Mail Service Center, Raleigh, North Carolina 27699-1621
Location: 4401 Reedy Creek Road, Raleigh, North Carolina 27607
Phone: [phone] FAX: [phone]
Internet http://h2o.enr.state.no.us/esb/
One
NorthCarolina
Altumilff
An Equal Opportunity 1 Atrrmative Action Employer

Additional information regarding the Division's Copper and Zinc Action Level Policy can be found at the
following web site - http://portal.ncdenr.org/web/wq/ess/atu. Click on the "Aquatic Toxicology" Unit and go to the
prompt "Information for permitted facilities". This web site also contains EPA's "Toxicity Reduction Evaluation
Guidance for Municipal Wastewater Treatment Plants." Section 4 of this document contains pertinent information on
Toxicity Identification Evaluations.
If you have any questions concerning this correspondence, please contact me at [phone] or Mr. John
Giorgino at [phone].
Sincerely,
Cindy Moore
Supervisor, Aquatic Toxicology Unit
ATTACHMENTS
cc: Corey Basinger- Winston-Salem Regional Office (no attachments
Pamala Myers-USEPA Region IV, Atlanta Federal Center, 61 Forsyth St., SW, Atlanta, GA 30303
(no attachments)
Central Files (no attachments)
Aquatic Toxicology Unit Files (no attachments)
Environmental Sciences Section
1621 Mail Service Center, Raleigh, North Carolina 27699-1621
Location: 4401 Reedy Creek Road, Raleigh, North Carolina 27607
Phone: [phone] FAX: [phone]
Internet: http:]/l12o.enr.state.nc.us/esb/
One
NorthCarolina
,ahmallff
An Equal Opportunity 1 Affirmative Action Employer

Mickey, Mike
From: Osborne, Ed [[e-mail]]
Sent: Tuesday, March 05, 2013 10:16 AM
To: Mickey, Mike
Mike,
We have a primary tank that is out of service and one of the sandfilters also is out. Corey wanted me to send him an email anytime
we had an equipment failure.
Thanks
Ed Osborne, Plant Supervisor
Department of Water Resources
City of Greensboro
Phone: [phone]; Fax: [phone]
PO Box 3136, Greensboro, NC 27402-3136
www.greensboro-nc.gov
-------------------------------------------------------
-------------------------------------------------------
Please note that email sent to and from this address is subject
to the North Carolina Public Records Law and may be disclosed to third
parties.
1

Mickey, Mike
From:
Basinger, Corey
Sent:
Tuesday, July 31, 2012 3:11 PM
To:
Mickey, Mike
Subject:
FW: N. Buffalo WWTP draft Permit, NCO024325
Attachments: _
NORTH BUFFALO DRAFT PERMIT 7-20-2012.pdf; 24325- fact sheet-updated7.20.2012.doc;
NCO024325-N Buffalo RPA 2012 version-2.xlsm
FYI
W. Corey Basinger ,
Regional Supervisor
Surface Water Protection Section
Winston-Salem Regional Office
Division of Water Quality
Email: [e-mail]
Phone: [phone]
Fax [phone]
E-mail correspondence to and from this address may be subject to the North Carolina Public. Records Law and may be disclosed to
third parties.
From: Grzyb, Julie
Sent: Tuesday, July 31, 2012 3:01 PM
To: Basinger, Corey
Cc: Belnick, Tom
Subject: N. Buffalo WWTP draft Permit, NCO024325
Corey,
The Draft North Buffalo permit was public noticed at the end of April 2012 and no comments were received except for
Greensboro's concern over the impact of the WS-V classification. Both Greensboro Permits were then put on hold. On
July 16, 2012, Senate Bill 810 was adopted and included the revisions to the WS-V classifications in Jordan and the Falls.
The regulations did not affect the draft permit for the N. Buffalo WWTP. Therefore, I resent the draft for the N. Buffalo
WWTP permit back to Greensboro with one minor change per their request (Greensboro wanted to be able to request a
permit modification after the mercury TMDL is adopted).
Attached is the draft permit, addendum to original fact sheet,, and a new cover letter recognizing the minor change.
Martie said she would have comments to me by Friday, August 3`d. I did not recall WSRO having any comments on the
original draft but let me know. I am hoping to issue the final permit next week provided Greensboro does not have any
significant comments.
Julie
Julie A. Grzyb, Environmental Engineer
NC DENR / Division. of Water Quality / Surface Water Protection Section
NPDES Complex Permitting, Point Source Branch
1617 Mail Service Center, Raleigh; NC 27699-1617
919/807-6389 (wk); 919/807-6495.(fax)
**Please no my email address has changed to inlie.zrzyWncdenrzov

E-mail correspondence to and from this address may be subject to the North Carolina Public Records law and may be
disclosed to third parties.

•A
D NCDENR / DWQ
a FACT SHEET/NPDES PERMIT RENEWAL
City of Greensboro/North Buffalo WWTP
NPDES No. NCO024325
Facility Information
(1.) Facility Name:
North Buffalo WWTP
(2.) Permitted F1ow,MGD:
16.0 MGD
(6.) County:
Guilford
(3.) Facility Class:
4
(7.) Regional Office:
Winston Salem
(4.) Facility Status:
Existing
(8.) USGS Topo Quad:
C20SW
McLeansville
(5.) Permit Status:
Renewal
" . Stream Characteristics
(1.) Receiving Stream:
North Buffalo Creek
(2.) Subbasin/8-Digit HUC:
030602/03030002
(8.) Drainage Area (mi2):
22.00
(3.) River Basin:
Cape Fear
(9.) Summer 7Q10 (cfs)
0.9
(4.) Stream Class:
WS-V; NSW
(10.) Winter 7Q10 (cfs):
2.6
(5.) 303(d) Listed:
YES
(11.) 30Q2 (cfs):
3.2
(6.) Index No.:
16-11-14-1b
(12.) Average Flow (cfs):
25.00
(7.) Use Support:
Not Supporting
(13.) IWC (%):
96.5 %
SUMMARY
This facility is a major municipal treatment plant operating in Guilford County. This
permit application was submitted by the City of Greensboro for the renewal of the
North Buffalo WWTP permit at the current plant design flow of 16 MGD. North Buffalo
discharges into North Buffalo Creek and has a separate sewer collection system. For
the past 3 years the average discharge flow was 5.6 MGD with a maximum of 10 MGD.
A portion of the flow received at N.Buffalo is sent to T.Z. Osborne. The N. Buffalo
WWTP receives wastewaters from 5 significant industrial users and has a full-scale
pretreatment program.
WWTPs, TZ Osborne and North Buffalo, owned and operated by the City of Greensboro
ultimately discharge to the Haw River arm of Jordan Lake. The City has proposed to
expand the TZ Osborne facility to include biological nutrient removal and to close
down and receive wastewaters treated at the N. Buffalo facility (16 MGD). In 2010, the -
City requested and received speculative limits for a combined discharge of 56 MGD
from the TZ Osborne facility to South Buffalo Creek. The City is currently pursuing
approval for the expansion. of TZ Osborne to 56 MGD under the State Environmental
Policy Act (SEPA) Program.
The N. Buffalo WWTP discharges to North Buffalo Creek, which then discharges to
Buffalo Creek>Reedy Fork>Haw River>Jordan Lake. North Buffalo Creek is an
effluent -dominated stream, with the Greensboro discharge representing 96.5% of the
in -stream waste concentration. North Buffalo Creek is listed in the Draft 2012 303(d)
list for Cu, Zn, and Nitrite -Nitrate Nitrogen impairments. The nitrates impairment is
being addressed through nutrient limitation requirements specified in the Jordan
Lake Nutrient Management Strategy.

NPDES PERMIT FACT SHEET City of Greensboro- North Buffalo
Page 2 NPDES No. NCO024325
With the adoption of the Jordan Lake Nutrient Management Strategy in Aug. 2009,
the City of Greenboro WWTPs will have to control nitrogen to meet the following
annual TN mass loadings by the year 2016.
Jordan Lake Rules End -of -Pipe Target TN Annual Mass Loadings
POTW
Permitted Flow
Annual Mass Load
I Concentration
North Buffalo
16.0 MGD
257,438 pounds
15.29 m L
TZ Osborne
40.0 MGD
645,277 pounds
1 5.29 m L
The permit was` modified in 2010 to reflect these requirements and this Draft permit
includes some revisions made to that rule in July 2011 which are noted in Section A.
(2.) Footnote 2. The revision extends the TN Combined Limit if an ATC is aquired for
purposes of complying with the allocation
As part of the Nutrient Management Strategy, North Buffalo Creek was reclassified as
a WS-V stream. The closest downstream intake on the Haw River is the Town of
Pittsboro's which is approximately 65 river miles below the TZ Osborne outfall.
Concerns regarding TN, ammonia and nitrates in South and North Buffalo Creek will
be addressed through the NPDES permits as the City proceeds with the expansion/
upgrades at TZ Osborne, the closing of N. Buffalo, and the City's implementation of a
nitrogen optimization plans.
North Buffalo Creek receives large amounts of urban runoff from the City of
Greensboro, as well as point source additions from Greensboro North Buffalo WWTP.
The City of Greensboro has developed a stormwater program that addresses problems
associated with nonpoint sources. North Carolina finalized the fecal TMDL for the
upper most section of North Buffalo Creek in April 2004. The TMDL does not require
any reductions in fecal load from point sources.
REASONABLE POTENTIAL ANALYSIS
Reasonable potential analyses were conducted for As, Be, Cd, Cr, Cu, CN, F, Pb, Hg,
Ni, Se, Zn, Fe and Chloride (see attached).
TOXICITY TESTING:
Type of Toxicity Test: Chronic P/F
Existing Limit: 001: Chronic P/F @ 90%
Recommended Limit: 001: Chronic P/F @ 90%
Monitoring Schedule: January, April, July, and October
The facility has passed 17 WET tests during the past five years with one failure in
2008. All subsequent tests passed.
COMPLIANCE SUMMARY:
DMRs have been reviewed for the period January 2008 through December 2011. The
facility received two Notice's of Violation (NOV's) pertaining to that time period. One
was for a Total Residual Chlorine daily maximum exceedance in Jan. 2009 and the
other was for a mercury exceedance in May 2009. No additional NOV's have been
issued to the WWTP since 2009.
A compliance evaluation inspection was conducted on July 20, 2010 and found the
facility satisfactory and compliant.
Page 2
Version: August 1, 2012

NPDES PERMIT FACT SHEET
Page 3
City of Greensboro- North Buffalo
NPDES No. NCO024325
INSTREAM MONITORING:
Instream monitoring is required for temperature, dissolved oxygen, fecal coliform, and
conductivity. The facility is a member of the Upper Cape Fear Monitoring Coalition,
and all their instream monitoring is conditionally waived for the duration of their
membership in the Coalition.
NUTRIENTS:
The permit for this facility was modified and re -issued on Nov. 5, 2010 to reflect the
Jordan Lake Nutrient Management Strategy rules consistent with the Director's
October 1, 2009 letter.
PROPOSED CHANGES:
In an effort to reduce costs for Permittees, a reduction in sampling for toxicants
became effective on 7/ 15/2010. Sampling reductions affected by this change are
noted below along with other proposed permit renewal changes:
• Cr, Ni, Se, Fe and chloride sample results showed no reasonable potential to violate Water
Quality Standards (WQS) and were removed from the permit. ,
• Mercury sampling results showed reasonable potential to violate WQS. Mercury monitoring
remains in the permit with a daily maximum limit of 36 ng/L and a monthly average limit
of 12 ng/L. Chronic and acute limits were required by US EPA Region IV. Monitoring was
reduced to quarterly.
• Cu and Zn sampling results showed reasonable potential to violate WQS, however, they are
action level parameters and limits are set in conjuction with toxicity test results. North
Buffalo is passing its toxicity tests so limits are not necessary. Both parameters remain in
the permit and sampling was reduced from monthly to quarterly.
• The level of detection for CN is 20 ug/L and this PQL results in a max predicted
concentration greater than the standard, therefore, limits will remain in the permit.
Sampling for CN was reduced to monthly.
• Fluoride did not show reasonable potential to violate WQS but predicted concentrations
were greater than 50% of the allowable concentration. Since this is not a required
Pretreatment Long Term Monitoring Program parameter it will remain in the permit with a
reduced sampling frequency of quarterly and no limitation.
• A second footnote has been added to Section A. (2.) Combined Limitations for Nutrients-
Outfall C01 to recognize Session Law 2011-394, H.B. 119.
• Section -A. (4.) on the Effluent Pollutant Scan now designates the three years in which the
scans are to be performed. Please review.
• Section A. (8.) Nitrogen Optimization Plan was added to confirm that the City of Greensboro
will implement these measures and continue to evaluate its treatment facilities and
operational processes to make reasonable efforts to reduce nitrogen discharges until
process improvements are completed as stated in its nitrogen optimization plan dated
2/11/2010.
PROPOSED SCHEDULE FOR PERMIT ISSUANCE:
Draft Permit to Public Notice: April 25, 2012 (est.)
Permit Scheduled to Issue: June 11, 2012 (est.)
STATE CONTACT:
If you have any questions on any of the above information or on the attached permit,
please contact Julie Grzyb at [phone].
Page 3
Version: August 1, 2012

NPDES PERMIT FACT SHEET
Page 4
i
City of Greensboro- North Buffalo
NPDES No. NCO024325
ADDENDUM TO FACT SHEET: JULY 20, 2012
On July 16, 2012 the NC Governor signed Senate Bill 810 which included the following
clarification on WS-V waters:
SECTiO- 12.1. Ryles adopted by the Environmental 214anagenient Commission
pursuant to S_L. 2009-216 and S.L. 2009-486 to implement nutrient management streategies for
the B. Everett Jordan Reservoir and the Falls of the Neuse Resew Bona watersheds shall not be
interpreted to apply surface water duality standards ,set out in 15A NCAC 2B .0218(3)(e)
through (3)(h) to waters designated in the nutrient management rules as WS-V except where.:
(i) the designation of WS-V is associated with a water supply iaitake used by an industry to
supply drinking water for their employees; or (ii) standards :set out in 15A NCAC 02B
0218(3)(e) through (3)(h) are violtated gat the upstream boundary of waters withm' those
watersheds that are classified as WS-II; DVS -III, or W:S-IV. 'This section shall not be construed
to alter the nutrient reduction requirements set out in 15A. NCAC, 2B .0262(5) or 15A NCAC
2B .02 75(3).
Currently, there is no evidence that this discharge will affect the upstream boundary
of Water Supply waters located approximately 65 river miles downstream of this
facility.
PROPOSED SCHEDULE FOR PERMIT ISSUANCE:
Permit Scheduled to Issue: August 10, 2012 (est.)
STATE CONTACT:
If you have any questions on any of the above information or on the attached permit,
please contact Julie Grzyb at [phone].
REGIONAL OFFICE COMMENTS
NAME: DATE:
Page 4
Version: August 1, 2012

NCDENR
North Carolina Department of Environment and Natural, Resources
Division of Water Quality
Beverly Eaves Perdue Charles Wakild, R E. Dee Freeman
Governor Director Secretary
July 20, 2012
Mr. Steve Drew, Director of Water Resources
City of Greensboro
Box 3136
Greensboro, North Carolina 27402 -3136
Dear Mr. Drew:
Subject: Draft NPDES Permit
Permit NCO024325
North Buffalo WWTP
Guilford County
The draft permit for N. Buffalo was sent on April 25, 2012. Discussions on the WS-V reclassification
were held and on July 16, 2012 the Governor signed Senate Bill 810. Regulation changes to the WS-V
classification in the Jordan Reservior did not affect the N. Buffalo draft permit.
Enclosed with this letter is a copy of the draft permit sent on April 25, 2012, with one minor modification.
A reopener clause which'allows the City of Greensboro to request that its mercury limitations be modified
to reflect the Mercury TMDL Strategy, once it is adopted, has been added to footnote 10 on Page 2 of 8.
Please review the draft very carefully to ensure thorough understanding of the conditions and
requirements it contains. ,
As recognized previously, the draft permit contains the following changes from your current
permit:
• The Jordan Lake Nutrient Management Strategy rules adopted in Aug. 2009 prompted a stream
reclassification for North Buffalo Creels from C; NSW to WS-V; NSW. See the Supplement to
Permit Cover Sheet.
• Cr, Ni, Se, Fe and chloride sample results showed no reasonable potential to violate Water Quality
Standards (WQS) and were removed from the permit.
• Mercury sampling results showed reasonable potential to violate WQS. Mercury monitoring remains
in the permit with a daily maximum limit of 36 ng/L and 'a monthly average limit of 12 ng/i,.
Chronic and acute limits were required by US EPA Region IV. Monitoring was reduced to quarterly.
• Cu and,Zn sampling results showed reasonable potential to violate WQS, however, they are action
level parameters and limits are set in conjuction with toxicity test results. North Buffalo WWTP is
1617 Mall Service Center, Raleigh, Noah Carolina 27699-1617
Location: 612 N. Salisbury St. Raleigh, North Carolina 27604
Phone: [phone] FAX: 91 M07-6492
Internet www rl wateroualitv.org
An Equal Opportunity 1 Affirmative Action Employer
NDoithCarohna
Natmall#

Page 2 of 2
passing its toxicity tests so limits are not necessary. Both parameters remain in the permit and
sampling was reduced from monthly to quarterly.
• The level of detection for CN is 20 ug/L and this PQL results in a max predicted concentration greater
than the standard, therefore, limits will remaii in the permit. Sampling for CN was reduced to
monthly.
• Fluoride did not show reasonable potential to violate WQS but predicted concentrations were greater
than 50% of the allowable concentration. Since this is not a required Pretreatment Long Term
Monitoring Program parameter it will remain in the permit with a reduced sampling frequency of
quarterly and no limitation.
• A second footnote has been added to Section A. (2.) Combined Limitations for Nutrients— Outfall
COI to recognize Session Law 2011-394, H.B. 119.
• Section A. (4.) on the Effluent Pollutant Scan now designates the three years in which the scans are to
be performed. Please review.
• Section A. (7.) (d.) on Combined Annual Delivered Loads (lb/yr) for Total Phosphorus and Total
Nitrogen requests that the report lable and identify the Combined Delivered Loads accordingly.
• Section A. (8.) Nitrogen Optimization Plan was added to confirm that the City of Greensboro will
implement these measures and continue to evaluate its treatment facilities and operational processes
to make reasonable efforts to reduce nitrogen discharges until process improvements are completed as
stated in its nitrogen optimization plan dated 2/11/2010.
Please note that the receiving stream is listed as an impaired waterbody on the North Carolina 303(d)
Impaired Waters List, Addressing impaired waters is a high priority with the Division, and instream
data will continue to be evaluated. If there is noncompliance with permitted effluent limits and stream
impairment can be attributed to your facility, then mitigative measures may be required.
Please review this draft carefully to ensure thorough understanding of the information, conditions, and
requirements contained therein. Should you wish to correct errors or provide comments regarding this
draft please contact the DENR / DWQ / NPDES Program no later than August 3, 2012. This draft
permit has already been Public Noticed and no comments have been received.
If you have questions concerning the draft permit for your facility, please contact me by e-mail
[e-mail]) or call me at [phone].
Respectfully,
ulie A. Grzy
Environmental Engineer, NPDES Complex Perrnitting Unit
Enclosure: NPDES Permit NC0024325 (DRAFT, fact sheet, RPA)
cc: NPDES Unit (draft permit, fact sheet, RPA)

Permit No. NCO024325
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provisions of North Carolina General Statute 143-215.1, other lawful standards
and regulations promulgated and adopted by the North Carolina Environmental Management
Commission, and the Federal Water Pollution Control Act, as amended, the
G OrLensboro
is hereby authorized to discharge wastewater from a facility 1
n R�n�
to receiving waters
ier Basin
in accordance with effluent limitations, monitoring requirements, and other conditions set forth in
Parts I, II, III, and IV hereof.
Thispermit shall become effective...................................................................... .........................XXXX, 2012.
This permit and authorization to discharge shall expire at midnight on ................................ June 30, 2016.
Signed this day ............................ XXXX, 2012.
for Charles Wakild, P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission

Permit No. NCO024325
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked. As of
this permit issuance, any previously issued permit bearing this number is no longer effective. Therefore, the
exclusive authority to operate and discharge from this facility arises under the permit conditions, requirements,
terms, and provisions included herein.
The City of Greensboro
is hereby authorized to:
1. Continue to operate an existing 16.0 MGD activated sludge wastewater treatment facility located at
the North Buffalo Creek WWTP (2199 White Street, Greensboro, Guilford County). This facility
includes the following treatment components:
• Mechanical bar screens
• Influent flow Measurement (Parshall flume and magnetic flow meter)
• Aerated grit removal
• Four primary settling tanks
• 80 MGD flow transfer pump station to TZ Osborne
From here the flow continues through one of the following treatment trains:
Original Train
• Two trickling filters (decommissioned)
• Activated sludge with nitrification (4 aeration basins with fine bubble diffusers)
Step feed process (removed)
• Chemical addition for phosphorus removal
• Five secondary clarifiers
#2 Train - decommissioned
Activated sludge with nitrification (1)
Secondary clarifiers (2)
The flows from the two separate trains come together and continue through the following
treatment processes:
• Four tertiary sand filters
• Effluent flow measurement (Parshall flume)
• Chlorination & Dechlorination
• Effluent aeration
2. Discharge from said treatment works (via Outfall 001) into North Buffalo Creek, a Class WS-V,
NSW stream in the Cape Fear River Basin, at the location specified on the attached map.
ii

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Nil'
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D4L-J

Permit No. NCO024325
A.(1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - Outfall 001
During the period beginning on the effective date of this permit and lasting until expiration, the
Permittee is authorized to discharge treated wastewater from Outfall 001. Such discharges shall be
limited and monitored by the Permittee as specified below:
:.
EFFLUENT r•
-' CHARACTERISTICS
EFFLUEN7LIMITATIONS. •��•-
,....,„
M ONITORING EQU !REME ,TS
MorAl y
Ave ra a
:
Weekiy .`
Avera e.
Daily
Maxlmu n
Measurement
Fre' uenc
Sample Type
Sample Location :•
Flow
16.0 MGD
Continuous
Recording
Influent or Effluent
Total Monthly Flow (MG)
. . Monitor & Report
Monthly
Rec. or Calc.
Influent or Effluent
CBOD, 5-day, 20°C (Summer)2
8:0 mg/L
12.0 mg/L
Daily
Composite
Influent & Effluent
CBOD, 5-day, 20°C (Winter)2
16.0 mg/L
24.0 mg/L
Daily
Composite
Influent & Effluent
Total Suspended .Sol &
30.0 mg/L
45.0 mg/L
Daily
Composite
Influent & Effluent
NH3, as N (Summer)
4.0 mg/L
12.0 mg/L
Daily
Composite
Effluent
NH3 as N (Winter)
8.0 mg/L
24.0 mg/L
Daily
Composite
Effluent
Fecal Coliform
(geometric mean)
200 100mL
400/100mL
Daily
Grab
Effluent
Dissolved Oxygen 3
Daily
Grab
Effluent
Temperature (OC)
r Daily
Grab
Effluent
pH 4
J LJDaily
Grab
Effluent
Total Residual Chlorines
17.0 µg/L
Daily
Grab
Effluent
TKN
Monitor & Report (mg/L)
Weekly
Composite
Effluent
NO3-N + NO2-N
Monitor & Report (mg/L)
Weekly
Composite
Effluent
Total Nitrogen, TN 6
Monitor & Report (mg/L)
Weekly
Composite
Effluent
TN Load'`8 [parameter codes]
Monitor & Report (lb/mo) [QM600]
Monitor & Report (lb/yr) [QY600]
Monthly
Annually
Calculated
Effluent
Total Phosphorus, TP
I Monitor & Report (mg/L)
Weekly
Composite
Effluent
TP Load' e [parameter codes]
[QM665]
Monitor & Report Monitor & Report (lb/yr)) [QY665]
Monthly
Annually
Calculated
Effluent
Total Cyanide 9
5.2 µg/L
22.0 µg/L
Monthly
Grab
Effluent
Total Mercury 10
0.012 µg/L
0.036 µg/L
Quarterly
Grab
Effluent
Fluoride
Quarterly
Composite
Effluent
Total Copper
Quarterly
Composite
Effluent
Total Zinc
Quarterly
Composite
Effluent
Chronic Toxicity 11
Quarterly
Composite
I -Effluent
Effluent Pollutant Scan
Monitor & Report
See Special Condition A.(4.)
Dissolved Oxygen 1z
12
Grab
U, D1, D2, D3
Fecal Coliform 12
12
Grab
U, D1, D2, D3
Temperature (oC) 12
12
Grab
U, D1, D2, D3
Conductivity 12
12
Grab
U, D1, D2, D3
All footnotes are listed on the following page.
PART I, Page 1 of 8

Permit No. NCO024325
Footnotes:
(Summer): April I- October 31
(Winter): November 1- March 31
(Daily): every day on which a wastewater discharge occurs except Saturdays, Sundays, and legal
holidays unless otherwise specified by the Director.
1. U: Upstream at the influent conduit. D1: Downstream at the unimproved road 0.8 miles east of
White/Nealtown Road intersection. D2: Downstream at Rankin Mill Road. D3: Downstream in
Buffalo Creek at McCleansville Road,
2. The monthly average effluent CBOD5 and TSS concentrations shall not exceed 15 % of the
respective influent value (85% removal).
3. The daily effluent dissolved oxygen concentration shall not be less than 6.0 mg/L.
4. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard %nits.
5. The Division shall consider all effluent TRC values reported below 50 ug/L to be in compliance
with the permit. However, the Permittee shall continue to record and submit all values reported by
a North Carolina certified laboratory (including field certified), even if these values fall below 50
ug/L.
6. TN is Total Nitrogen = TKN + NO3-N + NO2-N, where TKN.is Total Kjeldahl Nitrogen, NO3-N and
NO2-N are Nitrate and Nitrite Nitrogen, respectively.
7. TN or TP Load is the mass quantity of Total Nitrogen or Phosphorus discharged in a given period
of time. See Special Condition A.(7.), Calculation and Reporting of Nutrient Loads.
8. The facility is subject to nutrient limitations as specified in Special Condition A. (2.),. Combined
Limitations for Nutrients.
9. The quantitation limit for cyanide shall be 20 µg/L; levels reported below 20 µg/L shall be
considered zero for compliance purposes.
10. Effluent samples must:be analyzed by an EPA -approved low level mercury analysis method.
The City can request that the mercury limits be modified once the mercury TMDL is adopted.
11. Chronic Toxicity (Ceriodaphnia) at 90% with testing in January, April, July and October (see
Special Condition A. (3.)). TOXICITY MONITORING SHALL COINCIDE WITH METALS
MONITORING.
12. Instream monitoring requirements are waived as long as facility retains membership in the
UCFRBA, If membership is cancelled, facility will monitor 3/Week (June -September) and 1/Week
(October -May). Stream sampling may be discontinued at such times as flow conditions in the
receiving waters or extreme weather conditions will result in a substantial risk of injury or death to
persons collecting samples. Upon such discontinuance, stream sampling shall be resumed at the
first opportunity after the risk period has ceased.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
PART I, Page 2 of 8

Permit No. NCO024325
A.(2.) COMBINED LIMITATIONS FOR NUTRIENTS - Outfall C01
(a.) During the period beginning on the dates specified below and lasting until permit expiration,
the Permittee is further authorized to discharge Total Nitrogen and Total Phosphorus from the
T.Z. Osborne WWTP (NC0047384, Outfall 001) and the North Buffalo Creek WWTP
(NC0024325, Outfall 001) subject to the following combined, delivered load limitations:
Total„�litrogen,,. Total Phosphorus,
®elivered (l61yr)1 beliyer`ed (Ib)yr)
Permit. Facility Active Combined. Active Combined
Allocations Limitl. Allocations Limit
NCO047384 ITZ Osborne WWTP 290,375 35,708
NCO024325 I North Buffalo Creek WWTP 1 110,698 13,591
401,073
(effective 1/1/2016)Z
Footnote:
49,299
(effective 1/1/2010)
1 Allocations and linuts in this table are expressed as delivered loads. See Condition A.(7.) regarding
calculation of delivered loads from discharge loads.
2 Per the Jordan Lake Wastewater Discharge Rule (15A NCAC 02B .0270) as modified by North Carolina
Session Law 2011-394 (HB119), the annual mass Total Nitrogen limit shall be effective beginning with
calendar year 2016, unless the discharger has received by December 31, 2016, an authorization -to -construct
permit for construction, installation, or alteration of the treatment works for purposes of complying with
this limit, in which case the limit shall be effective beginning with calendar year 2018.
(b.) Compliance with these limits shall be determined in accordance with Special Conditions A. (6.),
Annual Limits for Total Nitrogen and Total Phosphorus, and A. (7.), Calculation and Reporting
of Nutrient Loads.
(c.) Nutrient monitoring and reporting requirements are specified in Special Conditions A.(1.),
Effluent Limitations and Monitoring Requirements, and A.(7), Calculation and Reporting of
Nutrient Loads.
(d.) Pursuant to N.C. General Statute Section 143-215.1 and the implementing rules found in Title
15A of the North Carolina Administrative Code, specifically, 15A NCAC 02B.0270, and Part II,
Sections B-12 and B-13 of this permit, the Division of Water Quality (Division) may reopen the
permits listed above and establish more stringent nutrient limits upon finding that such limits
are necessary to prevent the discharges from causing localized water quality impacts in the
receiving streams.
(e.) ' The Permittee may request that its permits be modified to rescind these combined limits and
establish individual mass discharge limits for each facility. The Division may, after written
notification to the Permittee, rescind these combined limits and establish individual mass
discharge limits for each facility if it determines that the combined limits do not support the
objectives of the Jordan Lake Nutrient Management Strategy. The Division shall provide for
public review of the proposed permit modifications and include in the permit an appropriate
schedule of compliance for the proposed nutrient limits.
PART I, Page 3 of 8

Permit No. NCO024325
A.(3.) CHRONIC TOXICITY PASS/FAIL PERMIT LIMIT
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant
mortality to Ceriodaphnia dubia at an effluent concentration of 90%.
The permit holder shall perform at a minimum, quarterh monitoring using test procedures outlined in
the "North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised February 1998,_ or
subsequent versions or North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure"
(Revised -February 1998) or subsequent versions. The tests will be performed during the months of
January, April, July, and October. Effluent sampling for this testing shall be performed at the NPDES
permitted final effluent discharge below all treatment processes.
If the test procedure performed as the first test of any single quarter results in a failure or ChV below
the permit limit, then multiple -concentration testing shall be performed at a minimum, in each of the
two following months as described in "North Carolina Phase II Chronic Whole Effluent Toxicity Test
Procedure" (Revised -February 1998) or subsequent versions.
The chronic value for multiple concentration tests will be determined using the geometric mean of the
highest concentration having no detectable impairment of reproduction or survival and the lowest
concentration that does have a detectable impairment of reproduction or survival. The definition of
detectable impairment, collection methods, exposure regimes, and further statistical methods are
specified in the "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised -
February 1998) or subsequent versions.
All toxicity testing results required as part of this permit condition will be entered on the Effluent
Discharge Monitoring Form (MR-1) for the months in which tests were performed, using the parameter
code TGP313 for the pass/fail results and THP313 for the Chronic Value. Additionally, DWQ Form AT-
3 (original) is to be sent to -the following address:
NCDENR/ DWQ/ Environmental Sciences Section
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Section no later
than 30 days after the end of the reporting period for which the report is made.
Test data shall be complete, accurate, include all supporting chemical/physical measurements and all
concentration/response data, and be certified by laboratory supervisor and ORC or approved
designate signature. Total residual chlorine of the effluent toxicity sample must be measured and
reported if chlorine is employed for disinfection of the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is
required, the permittee will complete the information located at the top of the aquatic toxicity (AT) test T -
form indicating the facility name, permit number, pipe number, county, and the month/year of the
report with the notation of "No Flow" in the comment area of the form. The report shall be submitted
to the Environmental Sciences Section at the address cited'above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required,
monitoring will be required during the following month. Should any test data from this monitoring
requirement or tests performed by the North Carolina Division of Water Quality indicate potential
impacts to the receiving stream, this permit may be re -opened and modified to include alternate
monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control
organism survival, minimum control organism reproduction, and appropriate environmental controls,
shall constitute an invalid test and will require immediate follow-up testing to be completed no later
than the last day of the month following the month of the initial monitoring.
PART I, Page 4 of 8

Permit No. NCO024325
A.(4.) EFFLUENT POLLUTANT SCAN
The Permittee shall perform a total of flue (3) Effluent Pollutant Scans for all parameters listed below. One scan
must be performed in each of the following years: 2013, 2014, and 2015. Analytical methods shall be in
accordance with 40 CPR Part 136 and shall be sufficiently sensitive to determine whether parameters are present
in concentrations greater than applicable standards and criteria. Samples should be collected with one quarterly
toxicity test each year, and must represent seasonal variation [i.e., do not sample in the same quarter every year]..
Unless otherwise indicated, metals shall be analyzed as "total recoverable."
Ammonia (as N) Trans-1,2-dichloroethylene Bis (2-chloroethyl) ether
Chlorine (total residual, TRC) 1,1-dichloroethylene Bis (2-chloroisopropyl) ether
Dissolved oxygen 1,2-dichloropropane Bis (2-ethylhexyl) phthalate
Nitrate/Nitrite 1,3-dichloropropylene 4-bromophenyl phenyl ether
Kjeldahl nitrogen Ethylbenzene Butyl benzyl phthalate
Oil and grease Methyl bromide 2-chloronaphthalene
Phosphorus
Total dissolved solids
Hardness
Antimony
Arsenic
Beryllium
Cadmium
Chromium
Copper'
Lead
Mercury (EPA Method 1631E)
Nickel
Selenium
Silver
Thallium
Zinc
Cyanide
Total phenolic compounds
Volatile orpmric Compounds:
Acrolein
Acrylonitrile
Benzene
Bromoform
Carbon tetrachloride
Chlorobenzene
Chlorodibromomethane
Chloroethane
2-chloroethylvinyl ether
Chloroform
Dichlorobromomethane
1,1-dichloroethane
1,2-diohloroethane
Methyl chloride
Methylene chloride
1,1,2,2-tetrachloroethane
Tetrachloroethylene
Toluene
1,1,1-trichloroethane
1,1,2-trichloroethane
Trichloroethylene
Vinyl chloride
Acid -extractable compounds:
P-chloro-m-cresol
2-chlorophenol
2,4-dichlorophenol
2,4-dimethylphenol
4,6-dinitro-o-cresol
2,4-dinitrophenol
2-nitrophenol
4-nitrophenol
Pentachlorophenol
Phenol
2,4,6-trichlorophenol
Base -neutral comwounds:
Acenaphthene
Acenaphthylene
Anthracene
Benzidine
Benzo(a)anthracene
Benzo(a)pyrene
'3,4 benzofluoranthene
Benzo(ghi)perylene
B enzo (lc)fluoranthene
Bis (2-chloroethoxy) methane
4-chlorophenyl phenyl ether
Chrysene
Di-n=butyl phthalate
Di-n-octyl phthalate
Dibenzo(a,h)anthracene
1,2-dichlorobenzene
1,3-dichlorobenzene
1,4-dichlorobenzene
3,3-dieblorobenzidine
Diethyl phthalate
Dimethyl phthalate
2,4-dinitrotoluene
2,6-dinitrotoluene
1,2-diphenylhydrazine
Fluoranthene
Fluorene
Hexachlorobenzene
Hexachlorobutadiene
Hexachlorocyclo-pentadiene
Hexachloroethane
Indeno(1,2,3-cd)pyrene
Isophorone
Naphthalene
Nitrobenzene
N-nitrosodi-n-propylamine
N-nitrosodimethylamine
N-nitrosodiphenylamine
Phenarithrene
Pyrene
1,2,4-trichlorobenzene
Reporting: Test results shall be reported on DWQ Form -A MR-PPA1 (or in a form approved by the
Director) by December 31st of each designated sampling year. The report shall be submitted to the
following address: NC DENR/ DWQ/ Central Files,1617 Mail Service Center, Raleigh, North
Carolina 27699-1617.
PART I, Page 5 of 8

Permit No. NCO024325
A.(5.) NUTRIENT ALLOCATIONS
(a.) The following table lists the Total Nitrogen (TN) and Total Phosphorus (TP) allocations
assigned to, acquired by, or transferred to the Permittee in accordance with the Jordan Lake
nutrient management rule (T15A NCAC 02B .0270) and the status of each as of permit issuance.
For compliance purposes, this table does not supersede any TN or TP limit established
elsewhere in this permit or in the NPDES permit of a compliance association of which the
Permittee is a Co-Permittee Member.
Total Nitrogen Allocation
ALLOCATION AMOUNT
ALLOCATION SOURCE.,,_ ` DATE::.: <;:;.:.:..;;.. t'.,.:; < y..;.-..:,:r•s :;•.. .:.:; STATUS .
Dischar a ..
TYPE . >,. 9
e �yere
Base Assigned by Rule 8/11/09 110,698 257,438 Active
(T15A NCAC 02B .0270)
TOTAL 110,698 257,438 Active
Footnote: ,
1 Nitrogen Transport Factor = 43%
Total Phosphorus Allocation
ALLOCATION AMOUNT 1
ALLOCATION
TYPE
SOURCE
DATE
STATUS
Delivered..:...,,
(lb/yO,.:....,.
(Ib/Y0
Base
Assigned by Rule
(T15A NCAC 02B .0270)
8/11/09
13,591
32,359
Active
TOTAL
1 13,591
32,359
Active
Footnote:
1 Phosphorus Transport Factor = 42%
(b.) Any addition, deletion, or modification of the active allocation(s) listed above (other than to
correct typographical errors) or any change of allocation to 'active' status shall be considered a
major modification of this permit and shall be subject to the public review process afforded
such modifications under state and federal rules.
PART I, Page 6 of 8

Permit No. NCO024325
A.(6.) ANNUAL LIMITS FOR TOTAL NITROGEN AND TOTAL PHOSPHORUS
(a.) Total Nitrogen (TN) and Total Phosphorus (TP) allocations and load limits for NPDES.
dischargers in the Jordan Lake watershed are annual loads and apply on a calendar year basis.
(b.) For any given calendar year, the Permittee shall be in compliance with the annual TN (or TP)
Discharge Load limit in this Permit if:
(i.) the Permittee's annual TN (or TP) Discharge Load is not greater than the effective hmit,'or
(ii.) the Permittee is a Co-Permittee Member of a compliance association.
(c.) The TN (or TP) limit in this Permit maybe modified as the result of allowable changes in the
Permittee's allocation.
(i.) Allowable changes include those resulting from purchase of TN (or TP) allocation from an
authorized mitigation banker, the Ecosystem Enhancement Program, or other source
allowed under applicable regulations; purchase, sale, trade, or lease of allocation between
the Permittee and other dischargers; regionalization; and other transactions approved by
the Division.
(ii.) The Permittee may request a modification of the TN (or TP) limit in this Permit to reflect
allowable changes in its allocation(s).
(A) Upon receipt of timely and proper application, the Division will modify the permit as
appropriate and in accordance with state and federal program requirements..
(B) Changes in TN (or TP) limits become effective on January 1 of the year following
permit modification. The Division must receive application no later than August 31
for changes proposed for the following calendar year.
(iii.)• Any requests for modification should be sent to:
NCDENR/ DWQ/ NPDES Programs
Attn: Jordan Lake Watershed Coordinator
1617 Mail Service Center
Raleigh, NC 27699-1617
(d.) If the Permittee is a member and co-permittee of an approved compliance association on
January 1 of a given year, its TN and TP discharges during that year are governed by that
association's group NPDES permit and the limits therein.
(i.) The Permittee shall be considered a Co-Permittee Member for any given calendar year in
which it is identified as such in Appendix A of the association's group NPDES permit.
(ii.) Association roster(s) and members' TN and TP allocations will be updated annually and in
accordance with state and federal program requirements.
(iii.) If the Permittee intends to join or leave a compliance association, the Division must be
notified of the proposed action in accordance with the procedures defined in the
association's NPDES permit.
(A) Upon receipt of timely and proper notification, the Division will modify the permit as
appropriate and in accordance with state and federal program requirements.
(B) Membership changes in a compliance association become effective on January 1 of the
year following modification of the association's permit.
(e.) The TN and TP monitoring and reporting requirements in this Permit remain in effect
throughout the term of the Permit and are not affected by the Permittee's membership in a
compliance association.
PART 1, Page 7 of 8

Permit No. NCO024325
A.(7.) CALCULATION AND REPORTING OF NUTRIENT LOADS
The Permittee shall calculate and report monthly and annual nutrient loads for the T.Z. Osborne
(NC0047384) and North Buffalo Creek (NC0025325) WWTPs as follows:
(a.) Calculation of Discharge Loads: The Permittee shall calculate monthly and annual discharge
loads for each facility as follows:
(i.) Monthly Discharge Load (lb/mo, TN or TP) = TN (or TP) x TMF x 8.34
where:
TN (or TP) = the average Total Nitrogen (or Total Phosphorus) concentration
(mg/L) of the, composite samples collected during the month
TMF = the Total Monthly Flow of wastewater discharged during the
month (MG/mo)
8.34 = conversion factor, from (mg/L x MG) to pounds
(ii.) Annual Discharge Load (lb/yr, TN or TP) = Sum of the 12 Monthly TN (or TP) Loads for
the calendar year
(b.) Calculation of Delivered Loads:
(i.) The Permittee shall calculate delivered loads as follows:
(A) Individual, Annual Delivered Load (lb/yr, TN or TP)
Annual Discharge Load (lb/yr, TN or TP) x TF
where TF = Transport Factor, as follows:
PERMIT
FACILITY
TFTN
TFTP
NCO047384
T.Z. Osborne WWTP
45%
44%
NCO024325
North Buffalo Creek WWTP
43%
42%
(A) Combined Annual Delivered Load (lb/yr) = Sum of the facilities' Individual Annual
Delivered TN (or TP) Loads for the calendar year
(c.) Reporting of Nutrient Discharges: The Permittee shall report each facility's monthly TN and
TP discharge loads in that facility's discharge monitoring report.
(d.) Reporting of Combined Delivered Loads: The Permittee shall report each calendar year's
combined delivered loads with the T.Z. Osborne WWTP's December report for that year and
shall append the report with a summary of monthly loads and calculations. The reported
Combined Delivered Loads should be labled and identified accordingly.
A.(8.) NITROGEN OPTIMIZATION PLAN
On February 17, 2010 The City of Greensboro submitted a plan to optimize the reduction of nitrogen in
its wasterwater discharges. It is expected that the City of Greensboro will implement these measures
and continue to evaluate its treatment facilities and operational processes to make reasonable efforts to
reduce nitrogen discharges until process improvements are completed.
PART I, Page 8 of 8

NPDES PERMIT FACT SHEET City of Greensboro- North Buffalo
Page 4 NPDES No. NCO024325
ADDENDUM TO FACT SHEET: JULY20, 2012
On July.16, 2012 the NC Governor signed Senate Bill 810 which included the following
clarification on WS-V waters:
SECTION 12.1. Rules adopted by the Environmental Malagement. Commission
pursuant to S.L. 2009-216 and S.L. 2009-486 to implement nutrient management strategies for
the B. Everett Jordan Reservoir and the Falls of the Neuse Reservoir watersheds shall not be
interpreted to apply surface water quality standards set out in 15A NCAC 213 .0218(3)(e)
through (3)(h) to waters designated in the nutrient management rules as WS V except where:
(i) the designation of WS-V is associated with a water supply intake used by an industry to
supply drin1dag water for their employees; or (ii) standards set out in 15A NCAC 02B
.0218(3)(e) through (3)(h) are violated at the upstream boundary of waters within those
1,vatersheds that are classified as WS-II, Ws -III, -or WS-IV. This section shall not be construed
to filter the nutrient reduction requirements set out in 15A NCAC. 2B .0262(5) or 15A NCAC
2B .0275(3).
Currently, there is no evidence that this discharge will affect the upstream boundary
of Water Supply waters located approximately 65 river miles downstream of this
facility.
PROPOSED SCHEDULE FOR PERMIT ISSUANCE:
Permit Scheduled to Issue: August 10, 2012 (est.)
STATE CONTACT:
If you have any questions on any of the above information or on the attached permit,
please contact Julie Grzyb at [phone].
REGIONAL OFFICE COMMENTS
NAME: DA
Page 4
Version: July 20, 2012

"r
City
� J North
of Greensboro
Carolina
June 22, 2012
CENTRAL FILES-NCDENR
1617 Mail Service Center
Raleigh NC 27699-1617
N.C.Dept. of ENR
JUN 2 6 2012
Winston-Salem
Regional office
Water Resources enar m
Re: March 2012 Amended DMR for T. Z. Osborne POTW NCO047384
March 2012 and April 2012 Amended DMRs for North Buffalo POTW NCO024325
To Whom It May Concern:
Enclosed please fmd.the above mentioned amended DMRs for the City of Greensboro POTWs.
In March and April 2012, all of our metals analyses were being conducted by Meritech, Inc.
Our laboratory staff discovered that we had sent two effluent samples for analyses on 3-14-2012
for both plants. We reported one set on the intital DMRs already submitted. We are now
reporting the average of both sets of results. Please note there are some significant differences in
the duplicate results, which we have also included. In additional iron was omitted from the
March and April 2012 DMRs. Only the effluent addendum is being submitted.
The changes to the DMRs are as follows:
■ March 2012 for T. Z. Osborne: Different values for chromium, copper, lead, nickel and
zinc
■ March 2012 for North Buffalo: Different values for chromium, copper, lead, nickel and
zinc. Iron was originally omitted and has now been reported.
■ April 2012 for North Buffalo: Iron value has been added. It was originally omitted.
Please note that these amendments did not change the compliance status of the POTWs.
We apologize for any inconvenience this may have caused. If you have any questions or need
additional information, please feel free to contact me at martie. org ome@greensboro-nc. ov or
Alicia Goots at alicia.gootsngreensboro-nc.gov.
Sincerely,
Martie Groome Alicia Goots
Laboratory and In ustrial Waste Supervisor Laboratory Coordinator
Cc: Mike Mickey, DWQ Winston-Salem Regional Office (with enclosures)
Don Howard, Water Reclamation Manager (with enclosures)
Lori Cooper, ORC T. Z. Osborne POTW (with enclosures)
Ed Osborne, ORC North Buffalo POTW (with enclosures)
Shameka Collins (with enclosures)
Laboratory Files (with enclosures)

A.. MjF_IJ DE D DMZ fo 22- 20 12_
EFFLUENT ADDENDUM
NPDES PERMIT NO. NC0047384 DISCHARGE NO. 001 MONTH March YEAR 2012
FACILITY NAME T. Z. OSBORNE WASTEWATER TREATMENT PLANT CLASS IV COUNTY GUILFORD
OPERATOR IN RESPONSIBLE CHARGE (ORC) LORI W. COOPER GRADE IV PHONE [phone]
CERTIFIED LABORATORIES (1) T.Z. OSBORNE LABORATORY (2) MERITECH, INC.
CHECK BOX IF ORC HAS CHANGED ❑ 1
Mail ORIGINAL and ONE COPY to:
ATTN: CENTRAL FILES
DIV. OF WATER QUALITY
DENR
1617 MAIL SERVICE CENTER
RALEIGH, NC 27699-1617
ACCURATE AND COMPLETE TO THE BEST OF MY KNOWLEDGE.
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EFFLUENT ADDENDUM
NPDES PERMIT NO. NCO024325 DISCHARGE NO. 001 MONTH April YEAR 2012
FACILITY NAME NORTH BUFFALO WASTEWATER TREATMENT PLANT CLASS IV COUNTY GUILFORD
OPERATOR IN RESPONSIBLE CHARGE (ORC) NATHAN E. OSBORNE GRADE IV PHONE [phone]
CERTIFIED LABORATORIES (1) T.Z. OSBORNE LABORATORY (2) MERITECH, INC.
CHECK BOX IF ORC HAS CHANGED ❑ PERSON(S) COLLECTING SAMPLES AUTOMATIC SAMPLERS
Mail ORIGINAL and ONE COPY to:
ATTN: CENTRAL FILES
DIVISION OF WATER QUALITY
SIGNATURE OF OPERATOR IN RESPONSIB GE)
1617 MAIL SERVICE CENTER
BY THIS SIGNATURE, I CERTIFY THAT THIS REPORT IS
RALEIGH, NC 27699-1617
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EFFLUENT ADDENDUM
�MENai=� DttitfL.
2- - -D
NPDES PERMIT NO. NCO024325 DISCHARGE NO. 001
FACILITY NAME NORTH BUFFALO WASTEWATER TREATMENT PLANT
OPERATOR IN RESPONSIBLE CHARGE (ORC) NATHAN E. OSBORNE
CERTIFIED LABORATORIES (1) T.Z. OSBORNE LABORATORY
CHECK BOX IF ORC HAS CHANGED ❑ PERSON(S) COLLECTING S/
Mail ORIGINAL and ONE COPY to:
ATTN: CENTRAL FILES
DMSION OF WATER QUALITY
1617 MAIL SERVICE CENTER
RALEIGH, NC 27699-1617
MONTH March. YEAR - 2012
CLASS IV COUNTY GUILFORD
_ GRADE IV PHONE [phone]
(2) MERITECH, INC.
MPLES- AUTOMATIC SAMPLERS
(9I0NATORr OF OPERATOR IN RESPONST4aeCHARGE)
BY THIS SIGNATURE, I CERTIFY THAT THIS REPORT IS
ACCURATE AND COMPLETE TO THE BEST OF MY KNOWLEDGE.
;'IrNi
DATE
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Cadmium
Chromium
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Lead
Nickel
Iron
Zinc
NORTH BUFFALO AND TZO EFFLUENT AVERAGES FOR MARCH 14,2012
for Amended DMR
NORTH BUFFALO 3-14-12
LTMP* Weekly AVG
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4
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5
16
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LTMP* Weekly
ug/I ug/I
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< 0.15
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5
3
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9
6
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2
< 0.5
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13
10
Zinc
91
236
AVG
ug/I
Long term monitoring sample preserved by Meritech N* Long term monitoring sample preserved by Meritech
TZO lab weekly sample preserved by TZO staff 1** TZO lab weekly sample preserved by TZO staff

Mickey, Mike
From: Groome, Martie [[e-mail]]
Sent: Friday, June 22, 2012 10:23 AM
To: Mickey, Mike; Kling, Walter
Cc:, Goots, Alicia; Hubbert, Bob; Kris Pawlak
Subject: RE: N. Buffalo March DMR
Mike,
We are working on amending the March and April 2012 reports right now. We have been sending out all of our metals
to Meritech until we can get our new ICP-MS up, running and certified. In March, we have the number we just left it off'
the report. For April, we did not request iron on the sample, but Meritech has the data and we have already requested
it. We will have the amended DMRs to you and Central Files as soon as possible.
We are so sorry for the inconvenience and we will do better from now on
Martie
Martie Groome, Laboratory and Industrial Waste Section Supervisor
Water Resources Department
City of Greensboro
Phone: [phone] Fax: [phone]
Box 3136, Greensboro NC 27402-3136
www.g reens boro-nc.gov
From: Mickey, Mike [mailto:[e-mail]]
Sent: Friday, June 22, 2012 8:06 AM
To: Kling, Walter; Groome, Martie
Subject: N. Buffalo March DMR
Wally / Martie —The monthly effluent iron data was missing from the March DMR. Was the data inadvertently
omitted? If so, can you resubmit a corrected copy? Thanks, Mike.
Mike Mickey
Mike.Mickev NCDENR:eov
NC Division of Water Quality
585.Waughtown Street
Winston-Salem; NC 27107
Phone: [phone] .
FAX: [phone]
E-mail correspondence to and from this address maybe subject to the North
Carolina Public Records Law and may be disclosed to third parties.
-------------------------------------------------------
Please note that email .sent to and from this address is subject
to the North Carolina Public Records Law and may be disclosed to third
parties.
1

Mickey, Mike
From: Kling, Walter [[e-mail]]
Sent: Monday, June 18, 2012 2:33 PM
To: Mickey, Mike
Subject: RE: City of Greensboro - T.Z. Osborne Facility (Effluent Sampling Point Change)
10-4, Thanks Mike.
From: Mickey, Mike [mailto:[e-mail]]
Sent: Monday, June 18, 2012 2:09 PM
To: Kling, Walter
Subject: RE: City of Greensboro - T.Z. Osborne Facility (Effluent Sampling Point Change)
Wally — The proposed change looks fine to me. No formal letter needed. This email is sufficient. Have at it.
Mike.
Mike Mickey
Mike. [e-mail]
NC Division of Water Quality
585 Waughtown Street
Winston-Salem, NC 27107
Phone: [phone]
FAX: [phone]
E-mail correspondence to and from this address maybe subject to the North
Carolina Public Records Law and may be disclosed to third parties.
From: Kling, Walter [mailto:[e-mail]]
Sent: Monday, June 18, 2012 1:55 PM
To: Mickey, Mike
Cc: Cooper, Lori W.; Groome, Martie; Goots, Alicia; Howard, Don
Subject: City of Greensboro - T.Z. Osborne Facility (Effluent Sampling Point Change)
Hi Mike,
In an effort to eliminate a dead zone that collects solids over long periods of time, we recently put our #4 chlorine contact
tank, and, #2 parshall flume in service on a continuous basis. In doing so, we've created the need to change our effluent
sampling point, to obtain representative combined flows from both parshall flumes.
was discussing this need with Martie Groome and Lori Cooper (TZO ORC). this morning, and it was suggested I make
contact with you in regards to this.
I've attached a schematic showing our current sampling location, and the new sampling location as well for your review.
The piping for the new sample pumps is in place, but is not connected to our composite sampler point at this time. Our
maintenance division will be making this connection in the very near future.
Do we need to send a formal letter regarding this change to Raleigh, or is this email sufficient notification regarding this
type of sampling location change?
Best Regards,
\ Wally
\Walter J. Kling, Process Control Specialist
1

Ir
T.Z. Osborne Facility
Department of Water Resources
City of Greensboro
Phone:[phone] Fax:[phone]
PO Box 3136, Greensboro, NC 27402-3136
www.q reensboro-nc.qov
-------------------------------------------------------
-------------------------------------------------------
Please note that email sent to and from this address is subject
to the North Carolina Public Records Law and may be disclosed to third
parties.
-------------------------------------------------------
-------------------------------------------------------
Please note that email sent to and from this address is subject
to the North Carolina Public Records Law and may be disclosed to third
parties.
2

<-ffi---x
To Composite
1�
x
1�
j� JUNCTION BOX
1
Location
CHLORINE
CONTACT TANK 91
CAS
CHLORINE
CONTACT TANK m2
FLOW
PASS .. _
THROUGH
Parshall Flume #1
rrent Sampling Point
. CHLORINE' CHLORINE . -
CONTACT TANK #3 CONTACT TANK 94
CASCADES
Parshall Flume #2
New -Sampling. Point�-x
! 9 outh Buffalo Outffall

Mickey, Mike
From: Basinger, Corey
Sent: : Tuesday, June 19, 20121:54 PM
To: Mickey, Mike
Subject: FW: NCG11 permit question...
Forgot to include you.on.the cc: list below.
Sorry.
CB
W. Corey Basinger
Regional Supervisor
Surface Water Protection Section
Winston-Salem Regional Office
Division of Water Quality
Email: [e-mail]
Phone: [phone]
Fax [phone] - .
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to
third parties. .
From: Basinger, Corey
Sent: Tuesday, June 19, 2012 1:40' PM
To: Bennett, Bradley; Georgoulias, Bethany
Subject: NCG11 permit question...
Quick question to either/both of you.
The City of Greensboro is planning to decommission the North Buffalo WWTP which currently possesses a NCG11
stormwater permit.
After decommissioning, the WWTP will only operate the bar screens prior to pumping all the wastewater over to the TZ
Osborne WWTP.
Their engineers have asked whether or not the NCG11 permit can be rescinded once decommissioning is.completed.
My initial response was no, since there will still be a waste treatment process (bar screening) occurring.on site.
However, I thought I'd get a second opinion to see, if there might be other similar situations across the State.
It isalsoimportant to note that this facility (built in the early.1900's) lies below the 100 yard flood plain elevation and is
inside a diked structure that has stormwater pumps to pump out the stormwater.
Thanks.
Corey
W. Corey Basinger
Regional Supervisor
Surface Water Protection Section
Winston-Salem Regional Office
Division of Water Quality
Email: [e-mail]
Phone: [phone]
Fax [phone]
1

Mickey, Mike
From: Osborne, Ed [[e-mail]]
Sent: Monday, June 04, 2012 9:07 AM
To: Mickey, Mike
Cc: Cooper, Lori W.; Burroughs, James L. Jr.
Aeration tank 3 is down due to diffuser repair.
Ed Osborne, Plant Supervisor
Department of Water Resources
City of Greensboro .
Phone: [phone] Fax:[phone]
2199 White Street, Greensboro NC 27405
[e-mail]
Please note that email sent to and from this address is subject
to the North.Carolina Public Records Law and may be disclosed to third
parties.
1

Mickey, Mike
From: Groome, Martie [[e-mail]]
Sent: Friday, May 25, 2012 3:40 PM
To: Grzyb, Julie
Cc: Howard, Don; Drew, Steve; McDowell, Kenney; Cooper, Lori W.; Osborne, Ed; Poupart, Jeff;
Matthews, Matt; Goots, Alicia; Kling, Walter; Flynt, Bradley; Hailey, Cornell; Phlegar, David;
Glenn McGirt; Victor Quick; Eric Davis; Bob Patterson; Dennis Hodge; Amy Varinoski; Kevin
Eason; Mike Burleson; Mickey, Mike; Basinger, Corey; Scott Pickard; Smith, George; Skee,
Joseph; Miller, Sharon; Henderson, Candace; Hubbert, Bob; Greene, Julie; Coble, Ashley;
Knight, Kris; Baker, Tom; Levitas, Steve
Subject: City of Greensboro NPDES Permits Comments
Julie,
Please accept this correspondence as the City of Greensboro's official response to the draft NPDES permits for the North
Buffalo POTW (NC0024325) and the T. Z. Osborne POTW (NC0047384) dated April 25, 2012.
1 understand from recent conversations with Matt Matthews and Chuck Wakild of DWQ that both City of Greensboro
NPDES permits will be on hold", with the 30-day comment period suspended, until the Jordan Lake Rules can be
modified to address the unintended consequences to the point -source NPDES permits. The City of Greensboro is in
agreement with this approach. We realize that the Jordan Lake Rules modifications/corrections will have to come from
the State Legislature and thus, the Greensboro NPDES permits may potentially be on hold for several months. We also
recognize that the T. Z. Osborne permit, in particular, may have to go to public notice again, since the changes to that
permit will likely meet the criteria for a major modification.
Please keep us informed as this situation develops. If you have any questions or need additional information, please do
not hesitate to contact me.
Martie
Martie Groome, Laboratory and Industrial Waste Section Supervisor
Water Resources Department
City of Greensboro
Phone:[phone] Fax:[phone]
Box 3136, Greensboro NC 27402-3136
www._qreensboro-nc.gov
Please note that email sent to. and from this address is subject
to the North Carolina Public Records Law and may be disclosed to third
parties.

Mickey, Mike
From: Groome, Martie [[e-mail]]
Sent: Monday, May 07, 2012 5:49 PM
To: Grzyb, Julie; Poupart, Jeff; Gore, Deborah; Basinger, Corey; Mickey, Mike; Matthews, Matt;
Bennett, Bradley; Reid, Dianne; Sauber, Jay
Cc: Drew, Steve; McDowell, Kenney; Howard, Don
Subject: Contact Information Update
We notified DWQ of some personnel changes at the City of Greensboro back in January but I'm afraid not all of the DWQ
sections got the information, so I'm sending it again.
Allan Williams retired last year as City of Greensboro Water Resources Director.
Effective January 16, 2012 Steve Drew is the new City of Greensboro Water Resources Director. The City of Greensboro
signatory information and signatory delegation document is still valid as it includes only position titles, not the given
names of the individuals.
Steve Drew's contact information is below. Please update the DWQ contact information.
Steve Drew
City of Greensboro Water Resources Director
Box 3136
Greensboro NC 27402-3136
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Thanks, Martie
Martie Groome, Laboratory and Industrial Waste Section Supervisor
Water Resources Department
City of Greensboro
Phone: [phone] Fax: [phone]
Box 3136, Greensboro NC 27402-3136
www.greensboro-nc.gov
-------------------------------------------------------
-------------------------------------------------------
Please note that email sent to and from this address .is subject„
to the North Carolina Public Records Law and may be disclosed to third
parties.
1

4
A4j;A
;
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Charles Wakild, P. E.
Governor Director
April 25, 2012
Mr. Allan Williams, Director of Water Resources D City of Greensboro Q
Box 3136
Greensboro, North Carolina 27402 -3136
Dear Mr. Williams:
Dee Freeman
Secretary
Subject: Draft NPDES Permit
Permit NCO024325
North Buffalo W WTP
Guilford County
Enclosed with this letter is a copy of the draft permit for your facility. Please review the draft very
carefully to ensure thorough understanding of the conditions and requirements it contains.
The draft permit contains the following changes from your current permit:
• The Jordan Lake Nutrient Management Strategy rules adopted in Aug. 2009 prompted a stream
reclassification for North Buffalo Creek from C; NSW to WS-V; NSW. See the Supplement to
Permit Cover Sheet.
• Cr, Ni, Se, Fe and chloride sample results showed no reasonable potential to violate Water Quality
Standards (WQS) and were removed from the permit.
• Mercury sampling results showed reasonable potential to violate WQS. Mercury monitoring remains
in the permit with a daily maximum limit of 36 ng/L and a monthly average limit of 12 ng/L.
Chronic and acute limits were required by US EPA Region IV. Monitoring was reduced to quarterly.
• Cu and Zn sampling results showed reasonable potential to violate WQS, however, they are action
level parameters and limits are set in conjuction with toxicity test results. North Buffalo WWTP is
passing its toxicity tests so limits are not necessary. Both parameters remain in the permit and
sampling was reduced from monthly to quarterly.
• The level of detection for CN is 20 ug/L and this PQL results in a max predicted concentration greater
than the standard, therefore, limits will remain in the permit. Sampling for CN was reduced to
monthly.
• Fluoride did not show reasonable potential to violate WQS but predicted concentrations were greater
than 50% of the allowable concentration. Since this is not a required Pretreatment Long Term
Monitoring Program parameter it will remain in the permit with a reduced sampling frequency of
quarterly and no limitation.
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604
Phone: [phone] FAX: 91 M07-6492
Internet; wwwmcwate�uali�.ong
An Equal opportunity l Affirmative Action Employer
ne
NorthCarolina
Natutrallt,

Page 2 of 2
• A second footnote has been added to Section A. (2.) Combined Limitations for Nutrients— Outfall
CO1 to recognize Session Law 2011-394, H.B. 119.
• Section A. (4.) on the Effluent Pollutant Scan now designates the three years in which the scans are to
be performed. Please review.
• Section A. (7.) (d.) on Combined Annual Delivered Loads (lb/yr) for Total Phosphorus and Total
Nitrogen requests that the reportta-bi'eland identify the Combined Delivered Loads accordingly.
• Section A. (8.) Nitrogen Optimization Plan was added to confirm that the City of Greensboro will
implement these measures and continue to evaluate its treatment facilities and operational processes
to make reasonable efforts to reduce nitrogen discharges until process improvements are completed as
stated in its nitrogen optimization plan dated 2/11/2010.
Please note that the receiving stream is listed as an impaired waterbody on the North Carolina 303(d)
Impaired Waters List. Addressing impaired waters is a high priority with the Division, and instream
data will continue to be evaluated. If there is noncompliance with pennitted effluent limits and stream
impairment can be attributed to your facility, then mitigative measures may be required.
In addition, please be aware that with the adoption of the Jordan Lake Nutrient Management Strategy and
the reclassification of N. Buffalo to a WS-V stream the WWTP may become subject to a nitrates permit
limit based on a Water Supply Water Quality Standard of 10 mg/L. It is not the Division's intent to
implement any such limit separate from the Nutrient Management Strategy at this time.
Concurrent with this transmittal, the Division will solicit public comment on this draft as required by
the EPA by publishing a notice in newspapers having circulation in the general Gulford County area.
Please review this draft carefully to ensure thorough understanding of the information, conditions, and
requirements contained therein. Should you wish to correct errors or provide comments regarding this
draft please contact the DENR / DWQ / NPDES Program no later than May 30, 2012.
Following the 30-day public comment period, the Division will review all pertinent comments and take
appropriate action prior to issuing a final NPDES permit. If you have questions concerning the draft
permit for your facility, please contact me by e-mail [e-mail]) or call me at (919) 807-
6389.
Respectfully,
J�luie A. Grvironmental Engineer, NPDES Complex Permitting Unit
Enclosure: NPDES Permit NC0024325 (DRAFT, fact sheet, RPA)
cc: NPDES Unit (draft permit, fact sheet, RPA)
EPA Region 4 (draft permit, fact sheet, RPA, permit application)
e-copy:
PERCS Unit (draft permit, fact sheet, RPA)
Winston-Salem Regional Office / Surface Water Protection Section (draft permit, fact sheet, RPA)
Aquatic Toxicology Unit (draft permit)
TACU, Steve Reid (draft permit)
Winston-Salem Regional Office /DWR/Regional Engineer, Lee Spencer (draft permit)

Permit No. NCO024325
STATE OF NORTHCAROLINA
DEPARTMENT OF ENVIRONMENT:ANUNATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provisions of North Carolina General Statute 143=215.1, other lawful standards
and regulations promulgated and adopted by the North Carolina vironmental Management
Commission, and the Federal Water Pollution Control -Ac , as a ed, the
City of G a lb
is hereby authorized to isch^ge a to ro a fac li to at a e
to receiving waters designated as North Buffalo Creek in the Cape Fear River Basin
in accordance with effluent limitations, monitoring requirements, and other conditions set forth in
Parts I, II, III, and IV hereof.
This permit shall become effective....................................................................................................XXXX, 2012.
This permit and authorization to discharge shall expire at midnight on .....................:.......... June 30, 2016.
Signed this day ............................ XXXX, 2012.
�P
for Charles Wakild, P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission

Permit No. NCO024325
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked. As of
this permit issuance, any previously issued pertnit bearing tltis number is no longer effective. Therefore, tJte
exclusive autlzorihj to operate and discharge front this facility arises under the permit conditions, requirements,
terms, and provisions included herein.
The City of Greensboro
is hereby authorized to:
1. Continue to operate an existing 16.0 MGD activated sludge wastewater treatment facility located at
the North Buffalo Creek WWTP (2199 White Street, Greensboro, Guilford County). This facility
includes the following treatment components:
• Mechanical bar screens
• Influent flow measurement (Parshall flume and magnetic flow meter)
• Aerated grit removal
• Four primary settling tanks
• 80 MGD flow transfer pump station to TZ Osborne
From here the flow continues through one of the following treatment trains:
Original Train
• Two trickling filters (decommissioned)
• Activated sludge with nitrification (4 aeration basins with fine bubble diffusers)
• Step feed process (removed)
• Chemical addition for phosphorus removal
• Five secondary clarifiers
#2 Train - decommissioned
Activated sludge with nitrification (1)
Secondary clarifiers (2)
The flows from the two separate trains come together and continue through the following
treatment processes:
• Four tertiary sand filters
• Effluent flow measurement (Parshall flume)
• Chlorination & Dechlorination
• Effluent aeration
2. Discharge from said treatment works (via Outfall 001) into North Buffalo Creek, a Class WS-V,
NSW stream in the Cape Fear River Basin, at the location specified on the attached map.
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Permit No.. NCO024325
A.(1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - Outfall 001
During the period beginning on the effective date of this permit and lasting until expiration, the
Permittee is authorized to discharge treated wastewater fr orn Outfall 001. Such discharges shall be
limited and monitored by the Permittee as specified below:
F.
L
E
t I
X1
re
A
Flow
16.0 MGD
Continuous
Recording
Influent or Effluent
Total Monthly Flow (MG)
Monitor & Report
Monthly
Rec. or Calc.
Influent or Effluent
CBOD, 5-day, 20oC (Summer)2
8.0 mg/L
12.0 mg/L
Daily
Composite
Influent & Effluent
CBOD, 5-day, 20°C (Winter)2
16.0 mg/L
24.0 mg/L
Daily,
'Composite
Influent & Effluent
Total Suspended SolidS2
30.0 mg/L
45.0 mg/L
Daily
Composite
posite
Influent & Effluent
NH3 as N (Summer)
4.0 mg/L
110 mg/L
Daily
Composite
Effluent
NH3 as N (Winter)
8.0 mg/L
1 24.0 mg/L
Daily
Composite
Effluent
Fecal Coliform
(geometric mean)
20011OOmL
4001100mL
Daily
Grab
Effluent
Dissolved Oxygen 3
Daily
Grab
Effluent
Temperature (OC)
Daily
Grab
Effluent
pH 4 19
L
Daily
Grab
Effluent
Total Residual Chlorine
Daily
Grab
Effluent
TKN
Monitor & Report (mg/L)
Weekly
Composite
Effluent
NO3-N + NO2-N
Monitor & Report (mg/L)
Weekly
Composite
Effluent
Total Nitrogen,,TN 6
Monitor & Report (mg/L)
Weekly
Composite
Effluent
TN Load'7,8 [parameter codes]
Monitor & Report,(lb/mo) [QM600]
Monitor & Report (lb/yr) [QY600]
Monthly
Annually
Calculated
. Effluent
Total Phosphorus, TP
Monitor & Report (mg/L)
Weekly
Composite
Effluent
TP Load'a [parameter codes]
Monitor & Report (lb/mo) [QM66.51'
Monitor & Report (lb/yr) [QY665]
Monthly
Annually
Calculated
Effluent
Total Cyanide 9
5.2 pg/L
22.0 Pg/L
Monthly
Grab
Effluent
Total Mercury 10
0.012 pg/L
0.036 pg/L
Quarterly
Grab
Effluent
Fluoride
Quarterly
Composite
Effluent
Total Copper
Quarterly
Composite
Effluent
Total Zinc
Quarterly
composite
Effluent
Chronic Toxicity
Quarterly
Composite
Effluent
Effluent Pollutant Scan
Monitor
&.Report
See Special Condition A.(4.)
Dissolved Oxygen 12
12
Grab
U, D1, D2, D3
Fecal Coliform 12
12
Grab
U/ DI, D2, D3
Temperature (IC) 12
12
Grab
U, D1, D2, D3
Conductivity 12
12
Grab
U, D1, D2, D3
All footnotes are listed on the following page.
PART L Page 1 of 8

Permit No. NCO024325
Footnotes:
(Summer): April 1- October 31
(Winter): November 1- March.31 .
(Daily): every day on which a wastewater dikhargei occum except Saturdays, Sundays, and legal
holidays unless, otherwise specified.by the Director.._:.`-,,.',,:
1. U: Upstream at the influent conduit. D1: Downstream at the unimproved road .0.8 miles east of
White/Nealtown Road intersection. D2;-Downstrea.m"at Rankin -Mill Road. D3: Downstream in
Buffalo Creek zt McCleansville Road.
2. The .monthly average effluent CBOD5 aid TSS concentrations shall not exceed 15 % of the
respective influent value (85 %:removal).
3. The daily effluent dissolved oxygen concentration shall'not,be _less.than 6.0mg/L.
4. The pH shall nofbe less:than 6.0 standard units nor,greater. than 9.0 standard `units.
5. The Division shall consider all effluent TRC values .'reported below 50 ug/L to, be in compliance
with the Ipermit. However, the Permittee-shall'coritiiiue to record and submit all values reported by
a North Carolina certified laboratory (including field certified), even if these values. fall below. 50
ug/L.
6. TN is Total Nitrogen = TKN + NO3-N + NO2-N, where TKN_ is.Total, Kjeldahl Nitrogen, NO3-N and
NO2-N are Nitrate and Nitrite Nitrogen, respectively.
7: TN or TP Load is the mass quantity of Total: Nitrogen or Phosphorus discharged in a given period
of time. See Special Condition A.(7.); Calculation and. Reporting of Nutrient Loads.
8: The facility'is subject to. nutrient limitations as specified.iri Special Condition.A.(2.), Combined
Limitations for Nutrients.
9. The quantitation_limit for cyanide shall be 20 µg/L; levels reported below 20.µg/L shall be
considered:zero for, compliance purposes:
10. Effluent samples mustbe analyzed by an EPA -approved low level:mercury analysis method:
11. Chronic Toxicity (Ceriodaphnia) at 90% with testing in January, April, July and October (see
Special.Condition .A. (1)).
12. histreain monitoring requirements are waived..as long as facility retains membership in the
UCFRBA. If membership is cancelled, facility will monitor 3/ Week (June -September) and 1/ Week
(October -May). Stream sampling may be discontinued at such times as flow conditions in the
receiving waters or extreme weather conditions will result in a'substantial risk of injury or death to
persons collecting samples. Upon such discontinuance, stream sampling shall'be resuined at the
first: opportunity after the risk period has ceased:
There shall be no discharge of floating solids or visible foam in other than trace amounts.
PART I, Page 2 .of 8

Permit No. NCO024325
A.(2.) COMBINED LIMITATIONS FOR NUTRIENTS — Outfall C01
(a.) During the period beginning on the dates specified below and lasting until permit expiration,
the Permittee is further authorized to discharge Total Nitrogen and Total Phosphorus from the
T.Z. Osborne WWTP (NC0047384, Outfall 001) and the North Buffalo Creek WWTP
(NC0024325, Outfall 001) subject to the following combined, delivered load limitations:
D;eLivered}'(Ib'/yr)t• , r'„ .Delveredd(If%yr)
,•.
j�,,..
Permit'c Coriitiined� �Active�` �.orntiinea'�',
A ICE' io Li Allow ons-- ` AIM
R cat ns� rYiiti t �t
NCO047384 ITZ Osborne WWTP 1 290,375 35,708
NCO024325 I North Buffalo Creek WWTP 1 110,698 13,591
Footnote:
I Allocations and limits in this table are expressed as delivered loads. See Condition A.(7.) regarding
calculation of delivered Ioads from discharge loads.
2 Per the Jordan Lake Wastewater Discharge Rule (15A NCAC 02B .0270) as modified by North Carolina
Session Law 2011-394 (HB119), the annual mass Total Nitrogen limit shall be effective beginning with
calendar year 2016, unless the discharger has received by December 31, 2016, an authorization -to -construct
permit for construction, installation, or alteration of the treatment works for purposes of complying with
this limit, in which case the limit shall be effective beginning with calendar year 2018.
(b.) Compliance with these limits shall be determined in accordance with Special Conditions A.(6.),
Annual Limits for Total Nitrogen and Total Phosphorus, and A.(7.), Calculation and Reporting
of Nutrient Loads.
(c.) Nutrient monitoring and reporting requirements are specified in Special Conditions A.(1.),
Effluent Limitations and Monitoring Requirements, and A.(7.), Calculation and Reporting of
Nutrient Loads.
(d.) Pursuant to N.C. General Statute Section 143-215.1 and the implementing rules found in Title
15A of the North Carolina Administrative Code, specifically, 15A NCAC 02B.0270, and Part II,
Sections B-12 and B-13 of this permit, the Division of Water Quality (Division) may reopen the
permits listed above and establish more stringent nutrient limits upon finding that such limits
are necessary to prevent the discharges from causing localized water quality impacts in the
receiving streams.
(e.) The Permittee may request that its permits be modified to rescind these combined limits and
establish individual mass discharge limits for each facility. The Division may, after written
notification to the Permittee, rescind these combined limits and establish individual mass
discharge limits for each facility if it determines that the combined limits do not support the
objectives of the Jordan Lake Nutrient Management Strategy. The Division shall provide for
public review of the proposed permit modifications and include in the permit an appropriate
schedule of compliance for the proposed nutrient limits.
PART I, Page 3 of 8

Permit No. NCO024325
A.(3.) CHRONIC TOXICITY PASS/FAIL PERMIT LIMIT
The effluent discharge shall at no timeexhibit observable_ inhibition of reproduction or significant
mortality to Ceriodaphnia.ditbia at an effluent concentration 6f,90%..,:
The permit holder shall perform at:a minimum;quarter-1 i monitoring usirtg,test.procedures_ outlined in
the "North Carolina Ceriodaphnia.Chronic Effluent Bioassay Procedure;" Revised February 1998, or
subsequent versions or "North. Carolina Phase J1,Chroi is Whole Effluent Toxicity. Test Procedure"
(Revised -February .1998), or subsequent versions. The tests 'Will be performed during the months of
January, April, July, and October.. Effluent sampling for this testing shall be performed at the NPDES
permitted. final effluent discharge below all tre.atment.processes.
If .the test procedure performed as the first test of: any' single quarter results in a failure or ChV below
the permit limit, then multiple -concentration testing.shalII be performed at a minimum, in each of the
two following months as described in "North Carolina Phase II Chronic Whole Effluent Toxicity Test
Procedure' (Revised -February 1998) or subsequent versions.
The chronic value for multiple concentration tests will be determined using the geometric mean of the
highest concentration havingno detectable impairment. of; reproduction or survival and the lowest
concentration that does have a detectable impairment of reproduction or survival. The definition of
"detectable impairment," collection methods, exposure regimes, and further statistical methods are
specified in the "North Carolina Phase II Chronic. Whole .Effluent Toxicity Test Procedure" (Revised -
February 1998) or subsequent versions.
All toxicity testing results required as part of this permitcondition will be entered on the Effluent
Discharge Monitoring Form (MR-1) for the months in which tests were performed, using the parameter .
code TGP3B for the pass/.fail results and THP39for the Chronic Value. Additionally, DWQ Form AT-
3 (original) is to be. sent to the following address:
NCDENR% DWQ/ Environmental Sciences Section
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Section no later
than 30 days after the end of the reporting period for which the report is made.
Test data shall be complete, accurate, include all supporting chemical/physical measurements and all
concentration/response data, and be certified by laboratory supervisor and ORC or approved
designate signature. Total residual chlorine of the effluent toxicity'sample must be measured and
.reported if chlorine is employed for disinfection of the waste stream.
Should there be no discharge of flow from the facility during a, month in which toxicity monitoring is
required, the permittee will complete theinformation located at the top of the aquatic toxicity (AT) test
form indicating the facility name,, permit number, pipe number,; county, and the month/year•of the
report with the notation of "No Flow" in the comment area of.the form. The report shall be submitted
to the Environmental. Sciences Section at the address cited :above.
Should the permittee fail to monitor during a month in:which toxicity monitoring is required,
monitoring will be required during the following month. ' Should any test data from this monitoring
requirement or tests performed by the North Carolina Division of Water Quality indicate potential
impacts to the receiving stream, this permit.may be re -opened and modified to include alternate
monitoring requirements or limits..
NOTE: Failure to achieve test conditions as specified in the,cited, document, such as minimum control
organism survival, minimum control organism reproduction, and appropriate environmental controls,
shall constitute an invalid test and will require immediate follow-up testing to be completed no later
than the last day of the month following the month of the initial monitoring:
PART I; Page 4 of 8

Permit No. NCO024325
A.(4.) EFFLUENT POLLUTANT SCAN
The Permittee shall perform a total of three (3) Effluent Pollutant Scans for all parameters listed below. One scan
must be performed in each of the following years: Analytical methods shall be in
accordance with 40 CFR Part 136 and shall be sufficiently sensitive to determine whether parameters are present
in concentrations greater than applicable standards and criteria. Samples should be collected with one quarterly
toxicity test each year, and must represent seasonal variation [i.e., do not sample in the same quarter every year].
Unless otherwise indicated, metals shall be analyzed as "total recoverable."
Ammonia (as N) Trans-1,2-dichloroethylene Bis (2-chloroethyl) ether
Chlorine (total residual, TRC) 1,1-dichloroethylene Bis (2-chloroisopropyl) ether
Dissolved oxygen 1,2-dichloropropane Bis (2-ethylhexyl) phthalate
Nitrate/Nitrite 1,3-dichloropropylene 4-bromophenyl phenyl ether
Kjeldahl nitrogen Ethylbenzene Butylbenzy] phthalate
Oil and grease Methyl bromide 2-chloronaphthalene
Phosphorus
Total dissolved solids
Hardness
Antimony
Arsenic
Beryllium
Cadmium
Chromium
Copper
Lead
Mercury (EPA Method 1631 E)
Nickel
Selenium
Silver
Thallium
Zinc
Cyanide
Total phenolic compounds
Volatile ornanic compounds:
Acrolein
Acrylonitrile
Benzene
Bromoform
Carbon tetrachloride
Chlorobenzene
Chl orodibromomethane "
Chloroethane
2-chloroethylvinyl ether
Chloroform
Dichlorobromomethane
1,1-dichloroethane
1,2-dichloroethane
Methyl chloride
Methylene chloride
1,1,2,2-tetrachloroethane
Tetrachloroethylene
Toluene
1,1,1-trichloroethane
1,1,2-trichloroethane
Trichloroethylene
Vinyl chloride
Acid -extractable compounds:
P-chloro-m-cresol
2-chlorophenol
2,4-dichlorophenol
2,4-dimethylphenol
4,6-dinitro-o-cresol
2,4-dinitrophenol
2-nitrophenol
4-nitrophenol
Pentachlorophenol
Phenol
2,4,6-trichlorophenol
Base -neutral compounds:
Acenaphthene
Acenaphthylene
Anthracene
Benzidine
Benzo(a)anthracene
Benzo(a)pyrene
3,4 benzofluoranthene
Benzo(ghi)perylene
Benzo(k)fluoranthene
Bis (2-chloroethoxy) methane
4-chlorophenyl phenyl ether
Chrysene
Di-n-butyl phthalate
Di-n-octyl phthalate
Dibenzo(a,h)anthracene
1,2-dichlorobenzene
1,3-dichlorobenzene
1,4-dichlorobenzene
3,3-dichlorobenzidine
Diethyl phthalate
Dimethyl phthalate
2,4-dinitrotoluene
2,6-dinitrotoluene
1,2-diphenylhydrazine
Fluoranthene
Fluorene
Hexachlorobenzene
Hexachlorobutadiene
Hexachlorocyclo-pentadiene
Hexachloroethane
Indeno(1,2,3-cd)pyrene
Isophorone
Naphthalene
Nitrobenzene
N-nitrosodi-n-propylamine
N-nitrosodimethylamine
N-ni trosod iphenyl amin e
Phenanthrene
Pyrene
1,2,4-tichlorobenzene
Reporting: Test results shall be reported on DWQ Form -A MR-PPA1(or in a form approved by the
Director) by December 31st of each designated sampling year. The report shall be submitted to the
following address: NC DENR / DWQ / Central Files,1617 Mail Service Center, Raleigh, North
Carolina 27699-1617.
PART I, Page 5 of 8

Permit No. NCO024325
A.(5.) NUTRIENT ALLOCATIONS
(a.) The following table lists the Total Nitrogen (TN) and Total Phosphorus (TP) allocations
assigned "to, acquired by, or transferred to the Permittee in accordance with the Jordan Lake
nutrient management rule (T15A NCAC 02B .0270) and the status of each as of permit issuance.
For compliance purposes, this table does not supersede any"TN or TP limit established
elsewhere in this permit or in the NPDES permit of a compliance association of which the
Permittee is a Co-Permittee Member.
Total Nitrogen Allocation
'llt?GA1f0NxA1�70U
:.`s5Y'� v
t�e��ver�ck�
ivr
ALL .0 OIV
�5'�
;V!3.x`:9
'TAT
77 'v
Base
Assigned by Rule
8/11/09
110,698
257,438
Active
(T15A NCAC 02B .0270)
TOTAL
110,698
257,438
Active
Footnote:
1 Nitrogen Transport Factor = 43%
Total Phosphorus Allocation
�� '��
rx.
77777777,7777777777
�¢#
.,<. < _
..-.,. _'.�!, .•a ,<,�._- .. ,...,<.
3v, .a'..
<:"�_.`i�..
,',;fir
�SOURCE:.:�..
, D6�1TEvr
`.��'' -
isciiar �.,
,
a
r,f„
3;
-tF v.
a r
bry a.
•si
F �t
a£:1 .V
Assigned by Rule
8/11/09
13,591
32,359
Active
Base
(T15A NCAC 02B .0270)
TOTAL
13,591
32,359
Active
Footnote:
1 Phosphorus Transport Factor = 42%
(b.) Any addition, deletion, or modificationof the active allocation(s) listed above (other than to
correct typographical errors) or any change of allocation to 'active' status shall be considered a
major modification of this permit and shall be subject to the public review process.afforded
suchmodifications under state and federal rules.
PART I, Page 6 of 8

Permit No. NCO024325
A.(6.) ANNUAL LIMITS FOR TOTAL NITROGEN AND TOTAL PHOSPHORUS
(a.) Total Nitrogen (TN) and Total Phosphorus (TP) allocations and load limits for NPDES
dischargers in the Jordan Lake watershed are annual loads and apply on a calendar year basis.
(b.) For any given calendar year, the Permittee shall be in compliance with the annual TN (or TP)
Discharge Load limit in this Permit if:
(i.) the Permittee's annual TN (or TP) Discharge Load is not greater than the effective limit, or
(ii.) the Permittee is a Co-Permittee Member of a compliance association.
(c.) The TN (or TP) limit in this Permit may be modified as the result of allowable changes in the
Permittee's allocation.
(i.) Allowable changes include those resulting from purchase of TN (or TP) allocation from an
authorized mitigation banker, the Ecosystem Enhancement Program, or other source
allowed under applicable regulations; purchase, sale, trade, or lease of allocation between
the Permittee and other dischargers; regionalization; and other transactions approved by
the Division.
(ii.) The Permittee may request a modification of the TN (or TP) limit in this Permit to reflect
allowable changes in its allocation(s).
(A) Upon receipt of timely and proper application, the Division will modify the permit as
appropriate and in accordance with state and federal program requirements.
(B) Changes in TN (or TP) limits become effective on January 1 of the year following
permit modification. The Division must receive application no later than August 31
for changes proposed for the following calendar year.
(iii.) Any requests for modification should be sent to:
NCDENR/ DWQ/ NPDES Programs
Attn. Jordan Lake Watershed Coordinator
1617 Mail Service Center
Raleigh, NC 27699-1617
(d.) If the Permittee is a member and co-permittee of an approved compliance association on
January 1 of a given year, its TN and TP discharges during that year are governed by that
association's group NPDES permit and the limits therein.
(i.) The Permittee shall be considered a Co-Permittee Member for any given calendar year in
which it is identified as such in Appendix A of the association's group NPDES permit.
(ii.) Association roster(s) and members' TN and TP allocations will be updated annually and in
accordance with state and federal program requirements.
(iii.) If the Permittee intends to join or leave a compliance association, the Division must be
notified of the proposed action in accordance with the procedures defined in the
association's NPDES permit.
(A) Upon receipt of timely and proper notification, the Division will modify the permit as
appropriate and in accordance with state and federal program requirements.
(B) Membership changes in a compliance association become effective on January 1 of the
year following modification of the association's permit.
(e.) The TN and TP monitoring and reporting requirements in this Permit remain in effect
throughout the term of the Permit and are not affected by the Permittee's membership in a
compliance association.
PART I, Page 7 of 8

Permit No. NCO024325
A.(7.) CALCULATION AND REPORTING OF NUTRIENT LOADS
The Permittee shall calculate and report monthly and annual nutrient loads for the T.Z. Osborne
(NC0047384). and North Buffalo Creek (NC0025325) WWTPs as follows:
(a.) Calculation of Discharge Loads: The Permittee shall calculate monthly and annual discharge
loads for each facility as follows:
(i.) Monthly Discharge Load (lb/mo, TN or TP) = TN (or TP) x TMF x ,8:34
where:
TN (or TP) = the average Total Nitrogen (or Total Phosphorus) concentration
(mg/L) of the composite samples collected during the month
TMF = the Total Monthly Flow of wastewater discharged during the
month (MG/mo)
8.34 = conversion factor, from (mg/L x MG) to pounds
(ii.) Annual Discharge Load (lb/yr, TN or TP) = Sum of the 12 Monthly TN (or TP) Loads for
the. calendar year
(b.) Calculation of Delivered Loads:
(i.) The Permittee.shall calculate delivered loadsas follows:
(A) Individual, .Annual Delivered Load (lb/yr, TN or TP) _
Annual Discharge'Load (lb/yr, TN or TP) x TF
where TF = Transport Factor, as follows:
PERMIT
FACILITY
TFTN
TFTr
NCO047384
T.Z. Osbome WWTP
45%
44%
NCO024325
North Buffalo Creek WWTP
43%
42%
(A) Combined Annual Delivered,Load (lb/yr) = Sum of the facilities' Individual Annual
Delivered TN (or TP) Loads for the calendar year
(c.) Reporting of Nutrient Discharges: The Permittee shall report each facility's monthly TN' and
TP discharge loads in that facility's discharge monitoring report.
(d.) Reporting of Combined Delivered Loads: The Permittee shall report each calendar year's
combined' delivered loads with the T.Z. Osborne W T?s December, report for that year and
shall append the, report with a summary of monthly loads and calculations. The reported
Combined Delivered1oads should be labled and ideritified accordingly.
A.(8.) NITROGEN OPTIMIZATION PLAN
On February 17; 2010 The City of Greensboro submitted a plan to optimize the reduction of nitrogen in
its wasterwater discharges. It is expected that the City of Greensboro will implement these measures
and continue to°evaluate its treatment facilities and operational processes to make reasonable efforts to
reduce nitrogen discharges until process improvements are completed.
PART I, Page 8 of 8

D NCDENR / , DWQ_
O FACT SHEET/NPDES PERMIT•RENEWAL
City of Greensboro/North Buffalo WWTP
NPDES No. N00024325
.. ;.,.:r
-... ti
(1.) Facility Name:
North Buffalo WWTP .
(2.) Permitted F1ow,MGD:
16.0 MGD
(6.) County:
Guilford
(3.) Facility Class:
4
(7.) Regional Office:
Winston Salem
(4.) Facility.Status:
Existing..
(8.) USGS Topo.Quad:
" C20SW ,
McLeansville
(5.) Permit Status:
Renewal
`N`
z
..� . /::'4,.,• h�,a Gti N .. .. avr . �� :..r ���. ;,;4Z=.a'��^.,,F,°i°� . . � ^,vim n N'�:.,.� �
*^•f'tt`a• -_�a'`�zd=., -f-'. �
L vDH��Z":.�_,<'c ,� ' � -
(1.) Receiving Stream:
North Buffalo Creek,
(2.) Subbasin/8-Digit HUC:
030602/03030002'
(g,) Drainage Area- *2j:
22.00
(3.) River Basin:
Cape Fear
j9:� Summer 7Q10 (cfs)
0.9
(4.) Stream Class:
WS-V; NSW
(10.) Winter 7Q10 (cfs):
2.6
(5.) 303(d) Listed:
YES
(11.) 3002 (cfs):
3.2
(6.), Index No.:
16-1'1=14-'Ib .'
(12:) Average Flo"w (cfsji
25.00
(7,) Use Support:
Not Supporting
(13.),IWC.(%):
'96.5 %
SUMMARY
This facility is a major municipal treatment: plant operating in Guilford County. This
permit application was submitted by the City of Greensboro for the renewal of the
North Buffalo WWTP permit at the current plant design flow of 16 MGD..North Buffalo
discharges into North Buffalo Creek and has a separate sewer collection system. For
the past 3 years the average discharge flow was 5:6_=MGD`with a maximum of 10 MGD.
A portion of the flow received at N.Buffalo is sent to T.Z. Osborne. The N., Buffalo
WWTP receives wastewaters from 5 significant industrial users and has a full-scale
pretreatment program.
WWTPs, TZ Osborne and North. Buffalo, owned and. operated by the City of Greensboro
ultimately discharge to the Haw River .arm of Jordan- Lake. The City has proposed to
expand the TZ Osbornefacility to include biological. nutrient removal and to close
down .and receive wastewaters treated .at the N. Buffalo facility (16 MGD). In 2010, the
City requested and received speculative limits for a combined. discharge .of 56 MGD
from the TZ Osborne facility to South Buffalo'Creek. The City.is currently. pursuing
approval for the expansion of TZ Osborne to 56 MGD under the State Environmental
Policy Act (SEPA). Program.
The N. Buffalo WWTP discharges to North Buffalo Creek, which then discharges to
Buffalo Creek>Reedy Fork>I-law River>Jordan Lake. North Buffalo Creek is an
effluent -dominated stream, with the Greensboro discharge representing 96.5% of the
in -stream waste concentration. North Buffalo Creek is listed in the Draft 2012 303 (d)
list for Cu, Zn, and Nitrite -Nitrate Nitrogen impairments. The nitrates impairment is
being addressed through nutrient limitation requirements specified in the Jordan
Lake Nutrient Management Strategy.

NPDES PERMIT FACT SHEET
Page 2
City of Greensboro- North Buffalo
NPDES No. NCO024325
With the adoption of the Jordan Lake Nutrient Management Strategy in Aug. 2009,
the City of Greenboro WWTPs will have to control nitrogen to meet the following
annual TN mass loadings by the year 2016.
Jordan Lake Rules End -of -Pipe Tar et TN Annual Mass Loadings
POTW
Permitted Flow
Annual Mass Load
Concentration
North Buffalo
16.0 MGD
257,438 pounds '
5.29 m L
TZ Osborne
40.0 MGD
645,277 pounds
5.29 m L
The permit was modified in 2010 to reflect these requirements and this Draft permit
includes some revisions made to that rule in July 2011 which are noted in Section A.
(2.) Footnote 2. The revision extends the TN Combined Limit if an ATC is aquired for
purposes of complying with the allocation
As part of the Nutrient Management Strategy, North Buffalo Creek was reclassified as
a WS-V stream. The closest downstream intake on the Haw River is the Town of
Pittsboro's which is approximately 65 river miles below the TZ Osborne outfall.
Concerns -regarding TN, ammonia and nitrates in South and North Buffalo Creek will
be addressed through the NPDES permits as the City proceeds with the expansion/
upgrades at TZ Osborne, the closing of N. Buffalo, and the City's implementation of a
nitrogen optimization plans.
North Buffalo Creek receives large amounts of urban runoff from the City of
Greensboro, as well as point source additions from Greensboro North Buffalo WWTP.
The City of Greensboro has developed a stormwater program that addresses problems
associated with nonpoint sources. North Carolina finalized the fecal TMDL for the
upper most section of North Buffalo Creek in April 2004. The TMDL does not require
any reductions in fecal load from point sources.
REASONABLE POTENTIAL ANALYSIS
Reasonable- potential analyses were conducted for As, Be, Cd, Cr, Cu, CN, F, Pb, Hg,
Ni, Se, Zn, Fe and Chloride (see attached).
TOXICITY TESTING:
Type of Toxicity Test: Chronic P/F
Existing Limit: 001: Chronic P/F @ 90%
Recommended Limit: 001: Chronic P/F @ 90%
Monitoring Schedule: January, April, July, and October
The facility has passed 17 WET tests during the past five years with one failure in
2008. All subsequent tests passed.
COMPLIANCE SUMMARY:
DMRs have been reviewed for the period January 2008 through December 2011. The
facility received two Notice's of Violation (NOV's) pertaining to that time period. One
was for a Total Residual Chlorine daily maximum exceedance in Jan. 2009 and the
other was for a mercury exceedance in May 2009. No additional NOV's have been
issued to the WWTP since 2009.
A compliance evaluation inspection was conducted on July 20, 2010 and found the
facility satisfactory and compliant.
Page 2
Version: April 24, 2012

NPDES PERMIT. FACT SHEET City of Greensboro- North Buffalo
Page 3 NPDES No. NCO024325
INSTREAM MONITORING:::
Instream monitoring is required. for temperature, dissolved oxygen, fecal coliform, and
conductivity. The facility is a member of the Upper Cape Fear Monitoring Coalition,
and all their instream monitoring is conditionally waived for the duration of their
membership in the Coalition.
NUTRIENTS:.
The permit for this facility was modified and re -issued on Nov. 5, 2010 to reflect the
Jordan Lake. Nutrient Management Strategy rules consistent with the Director's
October 1, 2009 letter.
PROPOSED CHANGES:.
In an effort to reduce costs for Permittees, a reduction in sampling for toxicants
became effective on 7/ 15/2010. Sampling reductions affected by this change are
noted below along with other proposed permit renewal changes:
• Cr, Ni, Se, Fe and chloride sample results showed no reasonable potential to violate Water
Quality Standards. (WQS) and were removed from the permit.
• . Mercury, sampling results showed reasonable potential to violate WQS. Mercury monitoring
remains in the permit with a daily maximum limit of 36 ng[L and a monthly average limit
of 12 ng/L. Chronic and acute limits were required by US EPA Region IV. Monitoring, was
reduced to quarterly.
• Cu and Zn sampling results showed reasonable potential to violate WQS, however, they are
action level parameters and limits'are set in conjuction with toxicity test results. North
Buffalo is passing its toxicity tests so limits are not necessary. Both parameters remain in
the permit and sampling was reduced from monthly to quarterly.
• The level of detection for CN is 20 ug/L and this PQL results in a max predicted
concentration greater than the standard, therefore, limits will remain in the permit.
Sampling for CN was reduced to monthly.
• Fluoride did not show reasonable potential to violate WQS, but predicted concentrations
were greater than 50% of the allowable concentration.' Since this is not a required
Pretreatment Long Term Monitoring Program parameter it. will remain in the permit with a
reduced sampling frequency of quarterly and no limitation.
• A second footnote has been added to Section A. (2.) Combined Limitations for Nutrients-
Outfall C01 to recognize Session Law 2011-394, H.B. 119.
• Section A. (4.) on the Effluent Pollutant Scan now designates the three years in which the
scans are to be performed. Please review.
• Section A. (8.) Nitrogen Optimization Plan was added to confirm that the City of Greensboro
will implement these measures and continue to evaluate its 'treatment facilities and
operationalprocesses to make reasonable efforts to reduce nitrogen discharges until
process improvements are 'completed as stated in its nitrogen optimization plan dated
2/ 11/2010.
PROPOSED SCHEDULE FOR PERMIT ISSUANCE:
Draft Permit to Public Notice: April 25, 2.012 (est..)
Permit Scheduled to Issue: June 11, 2012 (est.)
STATE CONTACT:
If you have any questions on any of the above information or on the attached permit,
please contact Julie Grzyb at (91.9) 807-6389.
Page 3
Version: April 24,.2012

NPDES PERMIT FACT SHEET
Page 4
REGIONAL OFFICE COMMENTS
City of Greensboro- North Buffalo
NPDES No. NC0024325
NAME• DATE:
Page 4
Version: April 24, 2012

North Buffalo REASONABLE POTENTIAL ANALYSIS Outfall 1
NCO024325 Qw = 16 MGD
Qw.(MGD)= 16.00 WWTPAVTPClass: IV
1Q10S(cfs)= 0.76 IWC @ iQIOS = 97.63%
7Q1'0S (cfs) = 0.90 IWC @ 7Q105 = 96.50%
7QIOW (efs) = 2.60 IWC @ 7QIOW = 90.51%
'30Q2 (cfs) = 3.20 IWC @ 30Q2 = 88.570/.
Avg: Stream Flow, QA (cfs) = 25.00 IWC @ QA = 49.-80%
Receiving Stream: North Buffalo Creek Stream Class: WS-V, NSW
PARAMETER
STANDARDS & CRITERIA (2)
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
7
�E
a
F
Z
NC WQS / Applied V2 FAV /
Max Pred
n # Det. Allowable Cw
Chronic Standard Acute
Cw
Acute: NO WQS
'- "x'
Arsenic
C
S0 FW(7QIOs)
ug/L
12 0
5.0
al1'values Ies"siliaii`deteoi ;c „ "
--.•
_ _
Chronic: _ 751.8 —
---- — -- - ----
Novalue_>Allow•able_Cw;,
��.,r
Arsenic
C
10 HH/WS(Qavg)'
uglL
12 0
5.0.
Chron------ .20.1--
— "`��'--' "�-, -- — — —
No value> Allowable Cw
�'�='- �";•'x�' '
Acute: NO WQS
al]'kal'des.less,;diaii?dete'¢t.,
Beryllium
NC
6.5 FW(7QIOs)
ug/L
12 0
2.5
Chronic: 6:7 -_—
---=,_—-----�•=
No value> Allowable Cw
Acute: 15.5
allvalue slessthartdetect r
Cadmium
NC
2 FW(7QIOs) 15
ug/L
88 0
1.0
--- —
----- --- — —
Chronic: 2-. T-
--- -- s
° is
No value > Allowable Cw
Acute: 1,053.3
Chromium
NC
50 FW(7QIOs) 1022
ug/L
164 I
5.7
Chronic----- 51:8---
remoirefrom peiinit,E
No value > Allowable Cw.
Acute: T5
RP.46-r'RL(66Zr1Ag+FeGI);-appty:lQuarlerly
Copper (AL)
NC
7 FW(7Q 10s) 7
ug/L
95 26
19
_
MW(iWAngVvcbhjundioia ti it il TOX Test.
_
Chronic-- —7.3 ---
. ,`-.�_..-- =r-; :.->=,=r;-;, :.- ;,==_�.=
iemaiils iri perili; rceduce sampling,to"Quarterly':
23 value(s) > Allowable Cw
Acute: 22.7
allvaluesLessthandetect(fq -"2Qug/L) .
Cyanide
NC
5 FW(7QIOs) 22
10
ug/L
102 0
10.0
Chronic:-----5.2 ---
:...: >....
•..--'-,---;;.-z;---; Monthly
reriiairis in'pemiit reduce::§emp1ing;td'Mon"'
102 values > Allowable Cw
Acute: NO WQS
No RP Pred dted-Maze 50,%1'
Fluoride
NC
1800 FW(7Q10s)
ug/L
103 98
1,310.0
_ --- -
apply 0uaiferfy`:'tvionitoringA? :" -' -' ."_ °z1"
Chronic: 1,865.3
' r enriii reducesani linr fo Qiiariert'- :=r,
remains in: p," P QV
No value> Allowable Cw
.
Acute: • 34.8
aTl.valuesless,[han'diteoC'" <. •'a:,_
Lead
NC
25 FW(7QIOs) 33.8
ug/L
82 0
14.5
��-
Chronic: — — 25:9---
— — -- -- - — —
No value> Allowable Cw
Acute: NO WQS
RPfonoiiAL.=apply;QU6rtettyvMontoringwith'Limit:
Mercury
NC
12 FW(7Q10s)
0.5
ng/L
104 93
13.8
Chronic: IY4
remain"s In peririiCreducesampltng to;QuaAeilyatlow
No value > Allowable Cw
NCO024325-N Buffalo RPA 2012 version-2.xlsm, rpa
Page 1 of 2 4/23/2012

North Buffalo
NCO024326
REASONABLE POTENTIAL ANALYSIS
Outfall 1
Ow = 16 MG❑
Acuter 269.0
Nickel
NC
25 WS(7Q10s) 261
uglL
102 3
13.4
_ _ — —
--- -----
Chronic: 25_9---mov;frompemiif=--
No value > Allowable Cw
Acute: 57,7
alt:va[iies less than-'detect.Y ; ""
Selenium
NC
5 FW(7Ql0s) 56
ug/L
12 0
5.0
"-.='-,
- _ Chronic---- -- —
-
=—= % —
remo`veftomjifrnit'
No value > Allowable Cw
^y /`°
Acute: 69.1
RPiorAICu,Zn`A§;Fetl)-.apP)yQiie
Zinc (AL)
NC
50 FW(7Q10s) 67
ug/L
96, 96
87.8
_
-- --= ------
Moriitdnri irt'canjuncttonwitti,TOXFest' :;; " ; "`_,
-
Chronic: 5 i.8
-
remalr>s m permd,reduce sampTmg to C�uafterly
17 values > Allowable Cw
Acute: NO WQS
No%RP„remove.horri pertiiifr;;;" „T "'v.s:;'`
Iron
NC
1000 FW(7Q10s)
ug/L
92 92
404.3
Chronic: 1036
No value > Allowable Cw
Acute: NO WQS
No`RF: ,'4ctlon fevel'stendard,'femove from permit -
Chlorides
NC
250 WS(7Q10s)
mg/L
12'` 12
185.7
--------------------
Chronic: 259
— -- — — — — --
No value> Allowable Cw
NCO024325-N Buffalo RPA 2012 version-2.xlsm, rpa
Page 2 of 2 4/23/2012

Division of Water Quality
May 9, 2011
MEMORANDUM
To: Corey Basinger
Surface Water Protection, WSRO
Through: Cindy A. Moore
Supervisor, Aquatic Toxicology Unit
From: Carol Hollenkamp
Quality Assurance f tcer, Aquatic Toxicology Unit
Subject: Whole effluent toxicity test results
Greensboro N. Buffalo Creek WWTP
NPDES Permit # NCO024325/001
Guilford County
The aquatic toxicity test using flow proportional composite samples of effluent discharged from Greensboro
N. Buffalo Creek WWTP has been completed. Greensboro N. Buffalo Creek WWTP has an effluent
discharge permitted that is 16.0 million gallons per day (MGD) entering North Buffalo Creek (7Q 10 of 0.9
CFS). Whole effluent samples were collected on April 26 and April 28 by Jenifer Carter' and facility
representative Alicia Goots for use in a chronic Ceriodaphnia dubia multiple -dilution toxicity test. The test
using these samples passed with a chronic value (ChV) of >100% which is greater than the 90% whole
effluent toxicity limit for this facility. Toxicity test information follows.
Test Type
Test Concentrations
Test Result
Control Survival
Control Mean Reproduction
Test Treatment Survival
Treatment Mean Reproduction
First Sample pH
First Sample Conductivity
First Sample Total Residual Chlorine
Second Sample pH
Second Sample Conductivity
Second Sample Total Residual Chlorine
3-Brood Ceriodaphnia dubia chronic multiple dilution
0, 22.5, 45, 75, 90, 100% sample
ChV =>100%
100%
21.2 neonates
100%
20.0 neonates at 100% test concentration
7.01 SU
445 micromhos/cm
<0.1 mg/L
7.03 SU
459 micromhos/cm
<0.1 mg/L
Test results for the above samples indicate that the effluent would not be predicted to have water quality
impacts on receiving water. These samples were split and sent to Meritech, Inc. The chronic multiple
dilution test run by Meritech resulted in a ChV of 94.9%. The No Observed Effect Concentration (NOEC)
of these tests are within one test concentration of each other, which is within the acceptable guidelines for
assessing split test comparability. Please contact us if further effluent toxicity monitoring is desired. We
may be reached at [phone].
Basin: CPF02
cc: Central Files
Jenifer Carter, WSRO
Aquatic Toxicology Unit Environmental Sciences Section

MEMORANDUM
To:
Division of Water Quality
May 9, 2011
Corey Basinger
Surface Water Protection, WSRO
Through: Cindy A. Moore
W
Supervisor, Aquatic Toxicology Unit
From: Carol Hollenkamp I' �F
Quality Assurance cif icer, Aquatic Toxicology Unit
Subject: Whole effluent toxicity test results
Greensboro Osborne WWTP
NPDES Permit # NCO047384/001
Guilford County
The aquatic toxicity test using composite samples of effluent discharged from Greensboro Osborne WWTP
has been completed. Greensboro Osborne WWTP has an effluent discharge permitted that is 40.0 million
gallons per day (MGD) entering South Buffalo Creek (7Q10 of 2.1 CFS). Whole effluent samples were
collected on April 26 by Jenifer Carter and facility representative Alicia Goots and April 28 by Jenifer
Carter and facility representative William Gross for use in a chronic Ceriodaphnia dubia multiple -dilution
toxicity test. The test using these samples passed with a chronic value (ChV) of >100% which is greater
than the 90% whole effluent toxicity limit for this facility. Toxicity test information follows.
Test Type
Test Concentrations
Test Result
Control Survival
Control Mean Reproduction
Test Treatment Survival
Treatment Mean Reproduction
First Sample pH
First Sample Conductivity
First Sample Total Residual Chlorine
Second Sample pH
Second Sample Conductivity
Second Sample Total Residual Chlorine
3-Brood Ceriodaphnia dubia chronic multiple dilution
0, 22.5, 45, 75, 90, 100% sample
ChV =>100%
100%
19.7 neonates
100%
25.6 neonates at 100% test concentration
7.50 SU
754 micromhos/cm
<0.1 mg/L
7.57 SU
795 micromhos/cm
<0.1 mg/L
Test results for the above samples indicate that the effluent would not be predicted to have water quality
impacts on receiving water. These samples were split and sent to Meritech, Inc. The chronic multiple
dilution test run by Meritech also resulted in a ChV of>100%. Please contact us if further effluent toxicity
monitoring is desired. We may be reached at [phone].
Basin: CPF02
cc: Central Files
Jenifer Carter, WSRO
Aquatic Toxicology Unit Environmental Sciences Section

Carter, Jenifer
From: Carter, Jenifer
Sent: Tuesday, May 10, 2011 10:23 AM
To: Groome, Martie; '[e-mail]'; 'Walter. King @greensboro-nc.gov'
Subject: FW: Toxicity Test Reports
Attachments: GreensboroNBuffaloCrk_0411.pdf; GreensboroOsborneWWTP_0411.pdf
Martie,
FYI... results of the split toxicity tests are attached. I guessed at Alicia's and Wally's email addresses, so please forward
to them if necessary. Let me know if you have any questions.
Have a great day!
Jenifer Carter
Before printing this email, please consider your budget and the environment.
If you must print, please print only what you need and save ink with the free Eco-Font.
NC DENR Winston-Salem Regional Office
Division of Water Quality
585 Waughtown Street
Winston-Salem, NC 27107
Voice: [phone]
FAX: [phone]
E-mail correspondence to and from this address may be subject to the
North Carolina Public Records Law and may be disclosed to third parties.
From: Hollenkamp, Carol
Sent: Tuesday, May 10, 2011 10:07 AM
To: Basinger, Corey
Cc: Carter, Jenifer; Ventaloro, Christopher; Moore, Cindy
Subject: Toxicity Test Reports
Attached are the toxicity test reports for Greensboro N. Buffalo Creek and Greensboro Osborne WWTP. If you have any
questions, just let me know.
Thanks,
Carol Hollenkamp
Aquatic Toxicology Unit/Environmental Sciences Section
North Carolina Division of Water Quality/DENR
1621 Mail Service Center, Raleigh, NC 27699-1621
Phone: [phone]

Fax: [phone]
Website: http://portal.ncdenr.org/web/wq/ess/atu
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be
disclosed to third parties.

irt. Liv. iii vrarer vuanry tce ton
i OXICIT -SAMPLE COLLECTION FO ARO FRO MRO RRO WaRO WiRO (WSRG.'
Facility/Water Body gr-&a5hro x1jr*1 �fY:'A) ZALIW-I-rio
NPDES # NC 0 0 7 M'3�; Outfall #
County I L-2k t f Iwl'
Basin/Sub-basin C
Receiving Stream
Collector(s) (print) I J, i'-i
Grab Composite
Sampling Site !(Veb.I r
Description
Samples per Hour for Hours
t
Container: 54L (1 gal) PE cubitainer ❑Other (describe) # of containers
Chlorinated: [ 'es ❑ No Collected on Ice: [9-Yes ❑ No Shipped on Ice: ®-'es ❑ No
Method of Shipment: Courier Bus ❑ Staff ❑ Other (explain):
Date/time of transfer to - # -i; (see reverse for additional transfers)
Comments:
Pack sam
Collector(s)
Signature:
Vortib.Use
ATU
Sample No.
RECEIVED
date
time
by
from
Lab
Comments:
IShip samples to:
)le, splitting lab name:
with sUfflagni ice to maintain tg»z eratur
Onl '.
0.0 to 4.0°C until
,,7 /
Temperature
- @ receipt, °C
CONDUCTIVITY,
mhos/cm - µmhos/cm
date
time
DWQ/Environmental Sciences Branch
Aquatic Toxicology Unit
Mail Service Center 1621
Raleigh, NC 27699-1621
ESB Courier #: 520101
ATULab**
Date:
Rcd
on Ice
TRC,
mg/L
date
time
Street address: 4401 Reedy Creek Road
Raleigh, NC 27607
phone: [phone]

iN i DhiN K - DIV. ui Water yuauty Kegio
TOXICITY SAMPLE COLLECTION FOMq ARO FRO MRO RRO WaRO WiRO
U
Facility/Water Body
NPDES # NC 0 0 ) 4 Outfall # D ��
County
Basin/Sub-basin
Receiving Stream 'Ir'�?� ���Gi �� 6--e—
Collector(s) (print)
-- Grab Composite
t
Samples per Hour for F]Hours
�l-yf t vPtk1'r I
Sampling Site
y j
Description
Container: 04L (1 gal) PE cubitainer ❑Other (describe) # of containers
Chlorinated: [ es ❑ No Collected on Ice`401 Yes ❑ No Shipped on Ice: B-Yes ❑ No
Method of Shipment: Courier 0-Bus ❑ Staff F1, Other (explain):
Date/time of transfer to slri : !,- ¢ t; , / F (see reverse for additional transfers)
Comments:
"Split" sample, splitting lab name:',!!
fC�Cr`
*..* Pack sam le with sufficient ice to maintain aein erature of 0.0 to 4.0°Cuntil delive
`� to ATU Lab **
Collector(
Si ature:al_,_�z rUr�
J ti
��
Date: �- l c2 l /f
For Lab se.
Onl
ATU
Sample No.
-
Temperature
@ receipt, °C
Rcd
on Ice
RECEIVED
date
time
by
from
CONDUCTIVITY,
mhos/cm - µmhos/cm
date
time
by
TRC,
mg2
date
time
by
Lab
Comments:
IShip samples to: DWQ/Environmental Sciences Branch
Aquatic Toxicology Unit
Mail Service Center 1621 Street address: 4401 Reedy Creek Road
Raleigh, NC 27699-1621 Raleigh, NC 27607
ESB Courier #: 520101 phone: [phone]

NC DENR - Div. Of Water Quality Region
T O 16TY SAMPLE COLLECTION FO ARO FRO MRO RRO WaRO WiRO
RO
Facility/Water Body / r '�° 1`l u, i
Y � l .�ilS�zJj � s�, l �'d1 >�- �
NPDES # NC 0 0 �1 ' '' �� Outfall
County
Basin/Sub-basin P
Receiving Stream
r
Collector(s) (print) �G, t'E✓ �' �-�
Grab Composite
Date Began Time Began
Sampling Site r-P
Description
Samples per Hour for F Hoursf��
Date End Time End
'eIz / a26, / // 1 0.-:
Container: 64L (1 gal) PE cubitainer 00ther (describe) # of containers_
Chlorinated:es ❑ No Collected on Ice: 'Yes ❑ No Shipped on Ice: Yes ❑ No
Method of Shipment: Courier ®" Bus ❑ Staff ❑ Other (explain):
Date/time of transfer to (see reverse for additional transfers)
[Comments:
"Split" sample, splitting lab name: .�P;_
*.* Pack sam Ie with su zcieril ice to maIntauz tem erature of, 0.0 to
F—Collectorksn
Signatur :
0
>l�se On
ATU
Temperature
Sample No.
-
@ receipt, °C
RECEIVED
CONDUCTIVITY,
date
mhos/cm - µmhos/cm
time
date
by
time
from
by
Lab
Comments:
Ship samples to: DWQ/Environmental Sciences Branch
Aquatic Toxicology Unit
Mail Service Center 1621
Raleigh, NC 27699-1621
ESB Courier #: 520101
C until delive "to ATULab *.*
Date:
Rcd
on Ice
TRC,
mg/L
date
time
Street address: 4401 Reedy Creek Road
Raleigh, NC 27607
phone: [phone]
M

TOXICITY SAMPLE COLLECTION FOARO FRO MRO RRO WaRO WiRO
Facility/Water Body ��( `���"� �� ,� 1 -J �"wn
NPDES # NC 0 0 Outfall # C
County
Basin/Sub-basin L t�Cdod
Receiving Stream
Collector(s) (print)
Le
Grab T-1Composite Samples per Hour for Hours
Date Began Time Began Date End Time End
Sampling Site
Description
Container: 4L 1 gal) PE cubitainer ❑Other (describe) # of containers
Chlorinated: - Yes ❑ No Collected on Ice: ErYes ElNo Shipped on Ice: [*as ElNo
Method of Shipment: Courier PBus ❑ Staff ❑ Other (explain):
r Date/time of transfer to slier: " (see reverse for additional transfers)
Comments:
Pack sai
Collector(
Signature:
roruap use.
ATU
Sample No.
RECEIVED
date
time
by
from
Lab
Comments:
Iship Samples to
le, splitting lab name:
with sufficient ice to j
temperature of 0.0 to
X-1 -- ,
date
time
DWQ/Environmental Sciences Branch
Aquatic Toxicology Unit
Mail Service Center 1621
Raleigh, NC 27699-1621
ESB Courier #: 520101
time
Street address: 4401 Reedy Creek Road
Raleigh, NC 27607
phone: [phone]

Mickey, Mike
From: Grzyb, Julie
Sent: Friday, April 27, 2012 1:56 PM
To: Mickey, Mike
Subject: RE: G-boro POTW's
Thanks for your comments,
Julie
From: Mickey, Mike
Sent: Friday, April 27, 2012 10:57 AM
To, Grzyb, Julie
Subject: RE: G-boro POTW's
Julie — Comments on draft permits are as follows:
N. Buffalo Draft Permit:
Just a typo. Label is misspelled on page #2 of the cover letter.
Section A. (7.) (d.) on Combined Annual Delivered Loads (lb yr) for Total Phosphorus and Total
Nitrogen requests that the report table anal identify the Combined Delivered Loads accordingly.
TZ Osborne Draft Permit:
Page #2 of the cover letter states quarterly monitoring for volatile organics:
Volatile organics- dichlorobromomethane, broinoform, ahlorodibrflmoinethane, and chloroform -
appear to be elevated but given the limited data set quarterly monitoring was added to the permit for
all four volatiles and DWQ will reassess these pollutants in next hermit. cycle.
The Effluent limitations & monitoring page states monthly monitoring for organics. Need to rectify:
Ctichlorobromornethane
Monitor & Report
Monthly
Grab
Effluent
Bromoronn
Monitor & Report
Monthly
Crab
Effluent
Chlorodibromomethane
Monitor & Report
Monthly
Grab
Effluent
Chloroform
Monitor & Report
Monthly
Grab
Effluent
The combined delivered load limit of 49,299 for T. Phosphorus needs to be removed from BIMS (see screen shot below).
As said in your email, "There are no parameter codes for Calculated Combined Delivered nutrient loads (Sum Total
annual for both plants)". The parameter code QY665 is for the TP annual discharge load which has no associated permit
limit. The only way for DWQ to determine compliance with the combined TP annual delivered load is to look at G-boro's
annual summary sheet. Hope that makes sense. Mike.

Mike Mickey
Mike. [e-mail]
NC Division of Water Quality
585 Waughtown Street
Winston-Salem, NC 27107
Phone: [phone]
FAX: [phone]
E-mail correspondence to and from this address may be subject to the North
Carolina Public Records Law and may be disclosed to third parties.
From: Grzyb, Julie
Sent: Wednesday, April 25, 2012 11:03 AM
To: Mickey, Mike
Cc: Basinger, Corey
Subject: RE: G-boro POTW's
Mike,
Disregard the first set of Drafts forwarded to you yesterday and review the attached Drafts (fabled version2) for TZ
Osborne and N. Buffalo. The WS-V reclassification resulted in some significant changes. Please call if you have any
questions.
In the version 2 Drafts, I did put parameter codes for nutrient loadings monthly and annually on the Effluent &
Monitoring page for both plants (QY665 Quantity Yearly TP and QY600 Quanity Yearly TN; QM665 Quantity Monthly TP
and QM600 Quanity Monthly TN). There are no parameter codes for Calculated Combined Delivered nutrient loads

Mickey, Mike
From: Mickey, Mike
Sent: Friday, March 30, 2012 3:20 PM
To: '[e-mail]'
Subject: Parameter Codes
Martie — Raleigh has established parameter codes for the monthly and yearly loads for TN and TP. Can you start using
them for N. Buffalo and TZO starting with the March report? Our keypunchers are not having much luck picking up the
numbers off the bottom of the DMR's. The codes are listed below.
TN lb/month = QM600
TN Ib/year = QY600
TP lb/month = QM665
TP lb/year = QY665,.
Any luck in solving the high zinc concentrations? Thanks, Mike.
---------------------------------------------------------------------------- .
Mike Mickey
IVlike.IVlickev@NCDEN R.gov
NC Division of Water Quality
585 Waughtown Street
Winston-Salem, NC 27107
Phone: [phone]
FAX: [phone]
E-mail correspondence to and from this address may be subject to the North
Carolina Public Records Law and may be disclosed to third parties.
PA
1

I assume the parameter codes below are for End of Pipe (EOP) values, and not delivered to Jordan Lake values. Is that
correct?
Martie
Martie Groome, Laboratory and Industrial Waste Section Supervisor
Water Resources Department
City of Greensboro
Phone: [phone] Fax: [phone]
Box 3136, Greensboro NC 27402-3136
www.g reensboro-nc.goy
From: Mickey, Mike [mailto:[e-mail]]
Sent: Friday, March 30, 2012 3:20 PM
To: Groome, Martie
Subject: Parameter Codes
Martie — Raleigh has established parameter codes for the monthly and yearly loads for TN and TP. Can you start using
them for N. Buffalo and TZO starting with the March report? Our keypunchers are not having much luck picking up the
numbers off the bottom of the DMR's. The codes are listed below.
TN lb/month = QM600
TN lb/year = QY600
TP lb/month = QM665
TP lb/year = QY665
Any luck in solving the high zinc concentrations? Thanks, Mike.
Mike Mickey
Mike. [e-mail]
NC Division of Water Quality
585 Waughtown Street
Winston-Salem, NC 27107
Phone: [phone]
FAX: [phone]
E-mail correspondence to and from this address maybe subject to the North
Carolina Public Records Law and may be disclosed to third parties.
--------------------------------------------------------
-------------------------------------------------------
Please note that email sent to and from this address is subject
to the North Carolina Public Records Law and may be disclosed to third
parties.
-------------------------------------------------------
-------------------------------------------------------
Please note that email sent to and from this address is subject
to the North Carolina Public Records Law and may be disclosed to third
parties.
2

Mickey, Mike
From:
Groome, Martie [[e-mail]]
Sent:
Monday, April 02, 2012 10:37 AM
To:
Mickey, Mike
Cc:
Baker, Tom; Goots, Alicia
Subject:
RE: Parameter Codes
Mike,
Thanks so much for the prompt reply. Our IT person is working on the changes now and we will have them done by the
March DMR as requested.
Martie
Martie Groome, Laboratory and Industrial Waste Section Supervisor
Water Resources Department
City of Greensboro
Phone: [phone] Fax: [phone]
Box 3136, Greensboro NC 27402-3136
www.areensboro-nc.gov
From: Mickey, Mike [mailto:[e-mail]]
Sent: Monday, April 02, 2012 10:27 AM
To: Groome, Martie
Subject: RE: Parameter Codes
Correct. End of pipe. Not delivered. (Could possibly change to delivered in the next permit. Will cross that bridge
when it gets here). Mike.
Mike Mickey
Mike.Mickev@ NCDENR.eov
NC Division of Water Quality
585 Waughtown Street
Winston-Salem, NC 27107
Phone: [phone]
FAX: [phone]
E-mail correspondence to and from this address may be subject to the North
Carolina Public Records Law and may be disclosed to third parties.
From: Groome, Martie [mailto:[e-mail]]
Sent: Monday, April 02, 2012 10:21 AM
To: Mickey, Mike
Cc: Baker, Tom; Goots, Alicia
Subject: RE: Parameter Codes
Martie,

.a
CD
North Carolina Department of Environment and
Division of Water Quality
Beverly Eaves Perdue Charles Wakild, PE
Governor
Mr. Steven Drew
Water Resources Director
City of Greensboro
P.O. Box 3136
Greensboro, NC 27402-3136
Director
March 14, 2012
SUBJECT: Compliance Evaluation Inspection
North Buffalo WWTP — City of Greensboro
NPDES Permit No. NCO024325
Guilford County
Dear Mr. Drew:
Natural Resources
Dee Freeman
Secretary
On March 12, 2012, Mike Mickey of this office met with Ed Osborne, ORC, to perform a
Compliance Evaluation Inspection of the NPDES wastewater discharge from the North Buffalo facility.
This type of inspection consists of two basic parts: an in -office file review and an on -site inspection of
the treatment facility. The attached EPA inspection form notes the eight (8) areas that were evaluated.
The findings and observations are outlined below:
I. Permit
The current NPDES permit expired on June 30, 2011. Prior to expiration, the City of Greensboro
submitted a renewal request to the Division on January 4, 2011. The draft permit is expected to be
finalized 'and forwarded to Greensboro in the near future.
If. Self -Monitoring Program
The monthly self -monitoring reports (DMR's) were reviewed for the period January 2011 through
December 2011. This review found the North Buffalo facility to be compliant with all final effluent permit
limitations for the period (see data summary attached). In addition, it was noted that all sampling was
performed per the frequencies specified in the permit. The up and downstream monitoring specified in
the permit is waived due to Greensboro's membership in the Upper Cape Fear River Basin Association.
III. Flow Measurement
The permit requires continuous flow recording and annual calibration of the metering device. The daily
effluent flow values reported on the DMR's are measured by an ultrasonic meter and parshall flume. The
meter was last calibrated by city staff on October 4, 2011. In addition, flow proportional composite
samples are collected from the effluent as required by the permit.
North Carolina Division of Water Quality, Winston-Salem Regional Office
Location: 585 Waughtown St. Winston-Salem, North Carolina 27107
Phone: [phone] FAX: [phone] Customer Service: 1-877-623-6748
Internet: www.ncwaterquality.org
An Equal Opportunity 1 Affirmative Action Employer
One
NorthCarollina
atum,1111

Mr. Steven Drew
Page 2
March 14, 2012
IV. Sludge Handling and Disposal
Solids generated at the North Buffalo facility are pumped to the T.Z. Osborne facility for dewatering and
incineration.
V. Operations and Maintenance
Observations did not indicate any concerns with the operation and maintenance of the North Buffalo
facility. Please see the attached inspection checklist for specific comments on system components.
VI. Facilitv Site Review
In anticipation of total nitrogen limits per the Jordan Lake Nutrient Management Rule, it is our
understanding that the City of Greensboro is proceeding with plans to decommission the North Buffalo
treatment facility and transfer all flow to the T.Z. Osborne POTW for final treatment.
VII. Records/Reports
A spot check of the December 2011 DMR with selected laboratory data revealed no discrepancies. The
facility files were found to be thorough and complete and all records are being maintained according to
the permit.
Vill. Effluent/Receiving Waters
The system discharges into North Buffalo Creek, class "WS-V, NSW" waters in the Cape Fear River
Basin.
Our office appreciates the conscientious effort of the City of Greensboro staff to comply with the
NPDES permit. Should you have any questions concerning this report, please contact Mike Mickey or
me at [phone].
Sincerely,
W. Corey Basinger
Regional Water Quality Supervisor
Surface Water Protection Section
cc: Ed Osborne (City of Greensboro, P.O. Box 3136, Greensboro, NC 27402)
Martie Groome (City of Greensboro, P.O. Box 3136, Greensboro, NC 27402)
Central Files
41S R,

City of Greensboro — North Buffalo WWTP
NPDES Permit No. NCO024325
Self -Monitoring Data Summary
January 2011 — December 2011
Parameter
Monthly Avg.
Permit Limit
Monthly Avg. Limit
Violations per DMR
Weekly Avg.
Permit Limit
Weekly Avg. Limit_
Violations per DMR
Flow (MGD)
16.0
None
-
NA
CBOD (mg/L)
(4.0 / 8.0)*
None
(6.0 / 12.0)*
None
TSS (mg/L).
30.0
None
45.0
None
NH3-N (mg/L)
(8.0 / 16.0)*
None
(12.0 — 24.0)*
None
Fecal (#/100 ml)
200
None
400
None
D. Oxygen (mg/L)
-
NA
> 6.0 **
None
pH (S.U.)
-
NA
(6.0 — 9.0) range
None
T. Chlorine (ug/L)
-
NA
17.0***
None
Cyanide (ug/L) ****
-
NA
5.2
None
T. Mercury (ug/L)
-
NA
0.012*****
None
T.Chromium(ug/L)******
-
NA
51.0
None
T. Nickel (ug/L) *******
-
NA
91.0
None
Flouride (mg/L)
-
NA
1.9
None
Chronic Toxicity
P/F @ 90%
None
-
NA
*(Summer / Winter limits)
**Daily Average Limit for Dissolved Oxygen.
***Daily Maximum Limit for Total Residual Chlorine (TRC). TRC values reported below 50 ug/L are considered compliant.
****Cyanide also has a Daily Maximum Limit of 22.0 ug/L. The quantitation limit for Cyanide is 20 ug/L.
*****Daily Maximum Limit for Mercury.
******T. Chromium also has a Daily Maximum Limit of 1022.0 ug/L.
*******T. Nickel also has.a Daily Maximum Limit of 261.0 ug/L.
Nutrient Limits: Combined Load for the N. Buffalo & T.Z. Osborne POTW's.
Parameter
Permit Limit - Total Combined.
Delivered Load (lb/yr)
Reported - Combined Delivered
Load per 2011 Annual Summary
Total Nitrogen
401,073 (effective 1/1/2016)
534,123 lb/yr.
Total Phosphorus
49,299 (effective 1/1/2010)
33,812 lb/yr.

United States Environmental Protection Agency
Form Approved.
EPA Washington, D.C. 20460
OMB No. 2040-0057
Approval expires 8-31-98
Section A: National Data System Coding (i.e., PCS)
Transaction Code NPDES yr/mo/day Inspection Type Inspector Fac Type
1 1A 2 1 5 I 31 NCO024325 111 121 12/03/12 117 181 C I 19I S I 20I
Remarks ,
2111111111IIIIIIIIIIII IIII IIIIIIII IIII IIII IIIII116
Inspection Work Days Facility Self -Monitoring Evaluation Rating 61 QA -----------------Reserved --------- —------- --
67I 169 70 71 UI 72I N I 73 L1J 74 751 I I I I I I 180
'
Section B: Facility Data
Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include
Entry Time/Date
Permit Effective Date
POTW name and NPDES permit Number)
North Buffalo Creek WWTP
11:05 AM 12/03/12
10/12/01
Exit Time/Date
Permit Expiration Date
2199 White St
Greensboro NC 274057461
11:50 AM 12/03/12
11/06/30
Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s)
Other Facility Data
Nathan Edward Osborne/ORC/336-373-5913/
Name, Address of Responsible Official/Title/Phone and Fax Number
Contacted
Steve Drew,PO Box 3136 Greensboro NC 274023136//336-373-2055/3364126305 No
Section C: Areas Evaluated During Inspection (Check only those areas evaluated)
Permit Flow Measurement Operations & Maintenance Records/Reports
Self -Monitoring Program Sludge Handling Disposal Facility Site Review Effluent/Receiving Waters
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
(See attachment summary)
Name(s) and Signature(s) of Inspector(s) Agency/Office/Phone and Fax Numbers Date
Michael M Mickey WSRO WQ//336-771-5000/
Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers
s. /./ate
EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete.
Page # 1

Permit: NCO024325
Inspection Date: 03/12/2012
Parmi4
Owner -Facility: North Buffalo Creek WWTP
Inspection Type: Compliance Evaluation
(If the present permit expires in 6 months or less). Has the permittee submitted a new application?
Is the facility as described in the permit?
# Are there any special conditions for the permit?
Is access to the plant site restricted to the general public?
Is the inspector granted access to all areas for inspection?
Comment: A review of the North Buffalo DMR's for the period January through
December 2011 found the facility to be compliant with all NPDES permit effluent
limitations and monitoring requirements for the entire year.
Prior to expiration of the NPDES permit on June 30, 2011, the City of Greensboro
submitted a permit renewal application to the Division on January 4, 2011. A copy of
the draft permit should be finalized in the near future.
Operations & Maintenance
Is the plant generally clean with acceptable housekeeping?
Yes No NA NE
® n ❑
■nnn
n■nn
■nnn
■ n n n
■nnn
Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable Solids, pH, DO, Sludge ■ n n n
Judge, and other that are applicable?
Comment: No concerns were noted with the operation and maintenance of the
facility. The 16.0 MGD treatment system consists of the following components:
mechanical bar screens, influent flow measurement, aerated grit removal, four primary
settling tanks, activated sludge basins, secondary clarifiers, tertiary sand filters, effluent
flow measurement, chlorination, contact tank and dechlorination. North Buffalo also has
a 65 MG transfer pump station and 54-inch force main to transfer screened influent to
TZ Osborne. During 2011 North Buffalo treated approximately 5.5 MGD and transfered
close to 10 MGD to T.Z. Osborne.
Record Keeping
Yes
No
NA NE
Are records kept and maintained as required by the permit?
■
n
n n
Is all required information readily available, complete and current?
■
n
n n
Are all records maintained for 3 years (lab. reg. required 5 years)?
■
n
n n
Are analytical results consistent with data reported on DMRs?
■
n
n n
Is the chain -of -custody complete?
■
n
n n
Dates, times and location of sampling
■
Name of individual performing the sampling
■
Results of analysis and calibration
■
Dates of analysis
■
Page # 3

Permit: NCO024325 Owner - Facility: North Buffalo Creek WWTP
Inspection Date: 03/12/2012 Inspection Type: Compliance Evaluation
Record Keeping Yes No NA NE.
Name of person performing analyses ■
Transported COCs ■
Are DMRs complete: do they include all permit parameters? ■ D D D
Has the facility submitted its annual compliance report to users and DWQ? ■ n D n
(If the facility is = or > 5 MGD permitted flow) Do they operate 24/7 with a certified operator on each shift? ■ D D n
Is the ORC visitation log available and current? ■ n n n
Is the ORC certified, at grade equal to or higher than the facility classification? ■ D D D
Is the backup operator certified at one grade less or greater than the facility classification? ■ D n D
Is a copy of the current NPDES permit available on site? ■ D D D
Facility has copy of previous year's Annual Report on file for review? ■ D D D
Comment: A spot check of the December 2011 DMR with selected laboratory data
revealed no discrepancies. The facility.files were found to be thorough and complete
and are maintained according to the permit.
The T.Z. Osborne laboratory performs a majority of analysis for DMR reporting except
for the following parameters sent to Meritech Labs: nitrate/nitrite nitrogen, TKN, .
cyanide, flouride, metals and toxicity.
The 2011 annual report was received by the Division on February 21, 2012. The report
provided an excellent summary of the collection system opertions and wastewater
treatment facility operations by Greensboro for 2011.
The up and downstream monitoring requirements in the permit are waived due to
Greensboro's participation in the Upper Cape Fear River Basin Association.
Bar Screens Yes No NA NE
Type of bar screen
a.Manual n
b.Mechanical ■
Are the bars adequately screening debris? ■ D .D ❑
Is the screen free of excessive debris? ■ D ❑ D
Is disposal of screening in compliance? ■ ❑ D ❑
Is the unit in good condition? ■ D D D
Comment: Collected screenings are landfilled.
Page # 4

J
Permit: NCO024325 Owner • Facility: North Buffalo Creek WWTP
Inspection Date: 03/12/2012 Inspection Type: Compliance Evaluation
Grit Removal Yes No NA NE
Type of grit removal
a.Manual
❑
b.Mechanical
■
Is the grit free of excessive organic matter?
■ n
❑ ❑
Is the grit free of excessive odor?
■ 00
n
# Is disposal of grit in compliance?
■ n
❑ ❑
Comment: Aerated grit removal.
Primary Clarifier
Yes No
NA NE
Is the clarifier free of black and odorous wastewater?
■ n
n n
Is the site free of excessive buildup of solids in center well of circular clarifier?
❑ ❑
■ ❑
Are weirs level?
■ n
n n
Is the site free of weir blockage?
■ n
n n
Is the site free of evidence of short-circuiting?
■ n
n n
Is scum removal adequate?
■ ❑
❑ ❑
Is the site free of excessive floating sludge?
■ n
n n
Is the drive unit operational?
■ n
n n
Is the sludge blanket level acceptable?
❑ ❑
■ n
Is the sludge blanket level acceptable? (Approximately'/ of the sidewall depth)
❑ ❑
■ ❑
Comment: Four rectangular primary clarifiers.
Aeration Basins
Yes No
NA NE
Mode of operation
Ext. Air
Type of aeration system
Diffused
Is the basin free of dead spots?
■ n
n n
Are surface aerators and mixers operational?
❑ ❑
■ ❑
Are the diffusers operational?
■ ❑
❑ ❑
Is the foam the proper color for the treatment process?
■ n
n n
Does the foam cover less than 25% of the basin's surface?
■ n
n n
Is the DO level acceptable?
n n
n ■
Is the DO level acceptable?(1.0 to 3.0 mg/1)
n n
n ■
Page # 5

Permit: NC0024325
Inspection Date: 03/12/2012
Owner -Facility: North Buffalo Creek WWfP
Inspection Type: Compliance Evaluation
Aeration Basins
Yes
No NA
NE
Comment: Four rectangular aeration tanks. Tank #1 removed from service to
increase MCRT. Sodium aluminate is fed at the aeration basin effluent.
Secondary Clarifier
Yes
No NA
NE
Is the clarifier free of black and odorous wastewater?
■
❑ ❑
❑
Is the site free of excessive buildup of solids in center well of circular clarifier?
■
n n
n
Are weirs level?
■
❑ ❑
❑
Is the site free of weir blockage?
■
n n
n
Is the site free of evidence of short-circuiting?
■
n n
n
Is scum removal adequate?
■
❑ ❑
n
Is the site free of excessive floating sludge?
■
n n
n
Is the drive unit operational?
■
❑ n
❑
Is the return rate acceptable (low turbulence)?
■
❑ ❑
❑
Is the overflow clear of excessive solids/pin floc?
■
n n
n
Is the sludge blanket level acceptable? (Approximately'/ of the sidewall depth)
n
n n
■
Comment: Five secondary clarifiers.
Filtration (High Rate Tertiary)
Yes
No NA
NE
Type of operation:
Down flow
Is the filter media present?
■
❑ ❑ ❑
Is the filter surface free of clogging?
■
n n n
Is the filter free of growth?
■
n n n
Is the air scour operational?
■
n ❑ n
Is the scouring acceptable?
■
❑ ❑ ❑
Is the clear well free of excessive solids and filter media?
n
n n ■
Comment: Four tertiary sand filters. Filter # 3 is out of service due to lower flows.
Disinfection -Liquid
Yes
No NA
NE
Is there adequate reserve supply of disinfectant?
■
n n
n
(Sodium Hypochlorite) Is pump feed system operational?
■
n ❑
n
Is bulk storage tank containment area adequate? (free of leaks/open drains)
■
n n
n
Is the level of chlorine residual acceptable?
■
Cl n
n
Is the contact chamber free of growth, or sludge buildup?
■
Cl Cl
n
Page # 6

J
Permit: NCO024325 Owner - Facility: North Buffalo Creek WWTP
Inspection Date: 03/12/2012 Inspection Type: Compliance Evaluation
Disinfection -Liquid
Yes
No
NA NE
Is there chlorine residual prior to de -chlorination?
■ ❑
n
Comment:
De -chlorination
Yes
No
NA NE
Type of system ?
Liquid
Is the feed ratio proportional to chlorine amount (1 to 1)?
F1
■
n n
Is storage appropriate for cylinders?
n
n
■ n
# Is de -chlorination substance stored away from chlorine containers?
n
n
■ n
Are the tablets the proper size and type?
n
❑
■ n
Comment: Sodium bisulfite is used.
Are tablet de -chlorinators operational?
n
n
■ n
Number of tubes in use?
Comment: .
Flow Measurement - Effluent
Yes
No
NA NE
# Is flow meter used for reporting?
■
n
n n
Is flow meter calibrated annually?
■
n
n n
Is the flow meter operational?
■
n
n n
(If units are separated) Does the chart recorder match the flow meter?
n
n
n ■
Comment: The effluent flow meter was last calibrated on 10/4/11 by city staff.
Effluent Sampling
Yes
No
NA NE
Is composite sampling flow proportional?
■
n
n n
Is sample collected below all treatment units?
■
n
n n
Is proper volume collected?
■
n
n n
Is the tubing clean?
■
❑
n n
# Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees Celsius)?
■
n
Cl n
Is the facility sampling performed as required by the permit (frequency, sampling type representative)?
■
n
n n
Comment: Flow proportioned samples are collected of the effluent
Is right of way to the outfall properly maintained? n n ■
Are the receiving water free of foam other than trace amounts and other debris? ■ 0 n n
If effluent (diffuser pipes are required) are they operating properly? ❑ ❑ ■ n
Page # 7

Permit: NC0024325 Owner - Facility: North Buffalo Creek WWTP
Inspection Date: 03/12/2012 Inspection Type: Compliance Evaluation
Effluent Pipe Yes No NA NE
Comment: The facility discharges into North Buffalo Creek, class "WS-V; NSW"
waters in the Cape Fear River Basin.
Standby Power Yes No NA NE
Is automatically activated standby power available? ■ ❑ ❑ ❑
Is the generator tested by interrupting primary power source? ■ 0 ❑ ❑
Is the generator tested under load? ■ fl ❑ 0
Was generator tested & operational during the inspection? ❑ ■ 0 ❑
Do the generator(s) have adequate capacity to operate the entire wastewater site? ■ ❑ fl ❑
Is there an emergency agreement with a fuel vendor for extended run on back-up power? ❑ ❑ ❑ ■
Is the generator fuel level monitored? ■ Q ❑ ❑
i
Comment: Multiple on -site generators.
Page # 8

Mickey, Mike
From: Kountis, Elizabeth
Sent: Monday; March 12, 2012 2:13 PM
To: Mickey, Mike
Subject: RE: Buffalo Creek / Cape Fear ?
The answer: the Jordan Lake rules! Every water draining to Jordan Lake was reclassified to include the WS-V
classification on 8-11-2009 except for those waters which already had another (more restrictive) WS classification.
Elizabeth Kountis
Senior Environmental Specialist
Classifications & Standards Unit
NC DENR Division of Water Quality
Tel: [phone] FAX: [phone]
www.ncwaterguality.ori;/CSU
E-mail correspondence to and from this address may be subject to the NC Public Records Law and may be disclosed to third parties.
From: Mickey, Mike
Sent: Monday, March 12, 2012 1:52 PM
To: Kountis, Elizabeth
Subject: Buffalo Creek / Cape Fear ?
Hi Elizabeth — I'm trying to figure out what made the classification of Buffalo Creek change from "C-NSW" to "WS-V;
NSW" in 2009. Can you enlighten me on that? Thanks, Mike.
Buffalo Creek
11JldS_V1-NS'1lli
From junction of north Buffalo Creek and South Buffalo Creek to Reedy Fork C
16-11-14
North Buffalo Creek 16-11-14-1 WS_V1-NSW
From source to Buffalo Creek C
South Buffalo Creek 16-11-14-2 WS_V1dNSW
Frorn source to li3vifalo Creek C
Mike Mickey
[e-mail]
NC Division of Water Quality
585 Waughtown Street
Winston-Salem, NC 27107
Phone: [phone]
FAX: [phone]
E-mail correspondence to and from this address may be subject to the North
Carolina Public Records Law and maybe disclosed to third parties.
1

Mickey, Mike
From: Giorgino, John
Sent: Thursday, March 08, 2012 8:02 AM
To: Mickey, Mike
Subject: RE: Greensboro - N. Buffalo
They are notified prior to permit renewal. Part of the renewal application process.
John Giorgino
Environmental Biologist
North Carolina Division of Water Quality
Environmental Sciences Section
Aquatic Toxicology Unit
Mailing Address:
1621 MSC
Raleigh, NC 27699-1621
Office: 919 743-8441
Fax: [phone]
E-mail correspondence to and from this address may be subject to the North Carolina Public
Records Law and may be disclosed to third parties.
From: Mickey, Mike
Sent: Thursday, March 08, 2012 8:01 AM
To: Giorgino, John
Subject: RE: Greensboro - N. Buffalo
Thanks. How do they know to run the second species test. Does the permit language instruct them?
If so, I didn't catch it on the first read.
Mike Mickey
IVI i ke . M i c kev(& N C D E N R. eov
NC Division of Water Quality
585 Waughtown Street
Winston-Salem, NC 27107
Phone: [phone]
FAX: [phone]
E-mail correspondence to and from this address maybe subject to the North
Carolina Public Records Law and may be disclosed to third parties.
From: Giorgino, John
Sent: Thursday, March 08, 2012 7:16 AM
To: Mickey, Mike
Subject: RE: Greensboro - N. Buffalo
Hey Mike.

> 100 means >100% for their regular quarterly test (full range chronic). The >100(j) is where they ran a second species
test (in this case fathead minnow) for lermit renewal. The result was >100%.
Let me know if that answers your question, and if you need anything else.
-John
John Giorgino
Environmental Biologist
North Carolina Division of Water Quality
Environmental Sciences Section
Aquatic Toxicology Unit
Mailing Address:
1621 MSC
Raleigh, NC 27699-1621
Office: 919 743-8441
Fax: [phone]
E-mail correspondence to and from this address may be subject to the North Carolina Public
Records Law and may be disclosed to third parties.
From: Mickey, Mike
Sent: Wednesday, March 07, 2012 3:39 PM
To: Giorgino, John
Subject: Greensboro - N. Buffalo
Hey John — What does >100,>100(P) mean for Greensboro's sampling in Jan & April? Thanks, Mike.
YE.R JAN FEB IIA i .AM MAY =1 I JUL
2010 >100,>100(P) — — >100,>900(P) — — >100
Mike Mickey
[e-mail]
NC Division of Water Quality
585 Waughtown Street
Winston-Salem, NC 27107
Phone: [phone]
FAX: [phone]
E-mail correspondence to and from this address may be subject to the North
Carolina Public Records Law and may be disclosed to third parties.
rJ

Mickey, Mike
From: Osborne, Ed [Ed:[e-mail]]
Sent: Tuesday, March 06, 2012 11:38 AM
To: Cooper, Lori W.; Mickey, Mike
Aeration tank 1 has been removed from service to increase MCRT. Sandfilter 3 is out of service due to lower.flows.
Ed Osborne, Plant Supervisor
Department of Water Resources
City of Greensboro.
Phone: [phone] Fax:[phone]
2199 White Street, Greensboro NC 27405
[e-mail]
Please note that email sent to and from this address is subject
to the North Carolina Public Records,Law and may be disclosed to third
parties.
1

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Ad
INTRODUCTION
The Clean Water Act of 1999 (House Bill 1160) requires all entities that own or operate
wastewater collection and treatment systems to make an annual ,report available to their
customers. The report must detail how a system operates, how well it performed during the
year, what violations occurred, and other information. This report is produced in compliance
with these requirements and covers the calendar year January - December 2011.
The City of Greensboro Water Resources Department operates two water reclamation
plants and a sewage collection system that collects and transports the sewage to these
two plants; some transfer of sewage occurs between the two plants. Following are the
professionals designated by the state as the "Operators in Responsible Charge" (ORC)
of the respective systems and permits for the systems:
North Buffalo Water Reclamation Facility
Permi zip C-0 2� 25 SRC Nathan Osborne, [phone]
T. Z. Osborne Water Reclamation Facility
Permit No. NC0047384, ORC Lori Cooper, [phone]
N.C.Dept.
Sewage Collection System APR 2 4
Permit No. WQCS00006, ORC Marls Malloy, [phone]
Winston-!
This report will be available at all City Water Resources Facilities, Libraries, the Melvin
Municipal Office Building, and also on the City's website. All customers will be notified
of its availability in the At Your Service newsletter, that are distributed in water and sewer
bills from March to May 2012. This report was compiled by staff of the Water Resources
Department and cost approximately $1,000.
The information contained herein is accurate to the degree
`1K,
i
Steven Drew, Director of Water Resources
'CYs� i
, i 911
APR 19 2012

The sewage collection and water reclamation
system of the City of Greensboro begins with
approximately 101,946 connections that serve
homes, commercial establishments, and industries.
Every day an average of 27 million gallons of
sewage is generated in our homes and industries
that must be collected, transported, and treated
to very stringent standards before it is released
back into our environment (in our streams). This
service is provided by the City's Water Resources
Department and is funded almost entirely from
the user charges that are paid monthly by our
customers.
Nearly all of the sewage or wastewater that is
generated by customers flows by gravity through
sewers that range from 6 to 72 inches in diameter.
As the lines leave neighborhoods they increase in
size to accommodate the flows that are collected
from the many areas that are served. These
sewers generally follow terrain to take advantage
of gravity flow but at certain low points pumping
stations are used to push the flow uphill to the next
drainage basin and set of lines.
Our sewer collection system transports
Greensboro's wastewater to two large water
reclamation facilities. The wastewater is processed
so that it can be returned to our streams with
minimal environmental impact. The North Buffalo
Facility and the TZ. Osborne Facility are permitted
to process up to 16 and 40 million gallons of
wastewater per day, respectively.
Many of Greensboro's residents recognize that our
location is not ideal for water supply development;
our streams are very small because we are at
the top of the watershed where our streams drain
to limited amounts of land. What they may not
recognize is that this makes wastewater reclamation
very difficult as well. The permitting of treated
wastewater discharges makes the assumption that
streamflow is at the lowest volume so as to offer the
protection needed when streamflow is at its lowest.
In North Carolina, this process is known as 7Q10"
flow, or the lowest volume expected to occur on a
particular stream for 7 consecutive days once every
10 years. The permit limits for discharges takes this
level of stream protection into account in calculating
the limits; yet it applies 24 hours per day, 7 days per
week, 365 days per year. Since Greensboro's limits
are calculated for discharging to such small streams,
our limits are very low. Not only does North Carolina
have some of the most stringent stream standards
in the country, Greensboro is a large city located on
very small streams. Our discharge flow constitutes
over 97% of the stream below our discharge points
at the lowest streamflows; therefore our permits are
written so as to protect the streams at all times as
though such minimal flow was present.
Aerial photo of T.Z. Osborne Plant
Aerial photo of North Buffalo Plant

The City of Greensboro's Treatment plants operate
under National Pollutant Discharge Elimination
System permits, most commonly known as
NPDES. These are highly complex permits that
include monitoring requirements and discharge
limits, some of which vary from season to season
and have different maximums for daily values,
weekly averages, monthly averages, and quarterly
averages. The permits are complex and can be
viewed at our treatment plants upon request.
Compliance with these permits requires that our
laboratory must conduct over 10,500 tests per year.
Any one of these tests may result in a value that
causes us to violate the limits of the NPDES permit.
There are some limits, such as cyanide, fluoride,
selenium, and cadmium, over which the operators
of the treatment plant have no control other than
through regulating what industry and households
can discharge to the sewers.
During 2011 the Water Resources Department
treated 10.1 billion gallons of wastewater and
returned it to our streams. We are proud of the
outstanding performance of these facilities that
was made possible by the dedicated efforts of
the professionals who operate, maintain, and
conduct tests for these facilities. Whenever there
is a NPDES permit violation that occurs, we report
them to the State to ensure compliance with all
reporting regulations. A list of the violations that
occurred during the 2011 calendar year is at the
end of this report (Table 1 & 2). There were no
detected environmental impacts from any of these
permit excursions.
The City of Greensboro operates a sewage
collection system comprised of 1,593 miles of
gravity line, 39,054 manholes, 47 pump stations,
and 90 miles of pressurized sewage force
main. The system is subject to many rules and
regulations that are now in effect. All spills of any
volume must be reported to the State. Spills that
exceed 1,000 gallons must also be reported to all
outlets of the news media.
Sewage spills from a collection system can be
caused by a variety of reasons such as roots,
grease, pump station failures, rainwater overload
and foreign objects obstructing the sewer. A list
of sewage spills in excess of 1,000 gallons that
reached surfaced water is included at the end
of this report (Table 3). There were no detected
environmental impacts from any of these incidents.
Wastewater laboratory staff
Facility maintenance by wastewater staff

The City of Greensboro has an on -going cleaning
and inspection program to monitor and maintain
our sewer system, including rodding, high pressure
flushing, and closed circuit television inspection
of lines. The City has an aggressive program
to rehabilitate old leaking sewer lines to begin
reducing the amount of rainwater entering our
collection system. The total spending amount for
rehabilitation exceeds $3 million per year.
We are also enhancing our regulations of
grease discharge in those areas where we are
experiencing grease buildup in lines. In September
2011, the newly installed fluidized bed incinerator
system located at the TZO wastewater facility was
fully operational replacing the old deteriorating
system that was installed in 1996. The new
incinerator will provide solid disposal services
generated by both wastewater facilities.
The Water Resources Department continues
to upgrade our two water reclamation plants to
comply with the Jordan Lake Rules regulations.
The rules were issued to offer water quality
protection to the B. Everett Jordan Reservoir by
reducing the amount of nutrients, specifically
nitrogen and phosphorus, that enter streams
that empty to this water body. The phosphorus
limits were effective January 1, 2010 and the total
nitrogen NPDES limits, which will require additional
treatment processes will be effective January 1,
2016. In anticipation of the requirements, the City
will make process changes beginning early 2013.
The improvements will cost approximately $75
million in capital expenses.
It is the duty and responsibility of the City of
Greensboro Water Resources Department to
prevent the excessive introduction of oil and
grease into the sanitary sewer system and the
wastewater treatment plants. The FOG policy is
designed to outline, implement and enforce oil and
grease discharge rules and to have an educational
program for both residential and commercial
users. This policy is applicable to industries,
school cafeterias, nursing homes and all food
service establishments that discharge wastewater
containing grease to the City of Greensboro
sanitary sewer system. In order to reduce sewer
blockages, food service establishments discharging
wastewater that contains grease to the City of
Greensboro sanitary sewer system must install
and maintain a grease trap or grease interceptor
to prevent grease from entering the sewer system.
The accumulation of grease within sanitary sewer
lines increases the potential to create sewer
blockages. Sanitary sewer blockages can result in
sanitary sewer overflows (SSOs), which may reach
the surface waters of North Carolina.
Residential customers should also practice proper
disposal of cooking grease by placing grease in
sealed containers and discarding in the garbage.
To protect the environment reduce the amount of
fats, oils, and grease that enters the
sewer system.
The Greensboro Water Resources Department
is proud that given the capacity of our treatment
plants and the age of our collection system,
our permit departures have been minimal,
especially when compared to similar cities. We
recognize however, that in the changing climate
of environmental concern, total compliance is
demanded by the public.
For more information, please visit our website at
www.greensboro-nc.gov/water.

T.Z. Osborne Publicly Owned Treatment Works
National Pollutant Discharge Elimination System (NPDES) Permit #NC0047384
M®nth.
_p
Descri ,tion
Number 6f Violation : '
T . e of Violation s ,..,- .
Yp )
March
Ammonia
2
One Weekly Average
One Monthly Average
One Weekly Average
April
CBOD
2
One Monthly Average
Ammonia
2
One Weekly Average
One Monthly Average
November
Fluoride
1
One Weekly Average
North Buffalo Publicly Owned Treatment Works
National Pollutant Discharge Elimination System (NPDES) Permit #NC0024325
Month, Description Num'be.r-of Violation Type,of Violation; ts)
N/A II N/A II 0 II 0
Note: There were no environmental impacts noted for the above violations.
Definitions:
Monthly average —The arithmetic mean of all "daily discharges" of a pollutant measured during the calendar month.
Weekly average —The arithmetic mean of all "daily discharges" of a pollutant measured during the calendar week.
WATER RESOURCES ADMINISTRATION: 336-373-2055
T. Z. OSBORNE WATER RECLAMATION: 336-373-7740
NORTH BUFFALO WATER RECLAMATION: 336-373-5913
www.greensboro-nc.gov/water

Permit Incident hi Volume
R-Surface
Perrroittee - Reaching Location Probable Cause -=
Number - Started _Water -Name
_. -Surface.Water- - .
City of WQCS00006 1/2/2011 3,000 South Buffalo II 3835 Raintree Drive Grease
Greensboro
City of WQCS00006 1/14/2011 1,800 South Buffalo 1 4303 Green Point Drive Debris in line
Greensboro
City of WQCS00006 8/2/2011 4,000 Horsepen Creek Bledsoe Lift Station Pipe failure (Break)
Greensboro Force Main
City of WQCS00006 8/24/2011 1,300 South Buffalo Creek 2720 Emanuel Road Pipe failure
Greensboro

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'W�a�te�r� VRersouCrrces � --,. a�rtm e�n�t' �- - - .�
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P�lja�nt !Rport;ford207 !r1� : :. ;
_r .
INTRODUCTION
The Clean Water Act of 1999 (House Bill 1160) requires all entities that own or operate
wastewater collection and treatment systems to make an annual report available to their
customers. The report must detail how a system operates, how well it performed during the
year, what violations occurred, and other information. This report is produced in compliance
with these requirements and. covers the calendar year January - December 2011.
The City of Greensboro Water Resources Department operates two water reclamation
plants and a sewage collection system that collects and transports the sewage to these
two plants; some transfer of sewage occurs between the two plants. Following are the
professionals designated by the state as the "Operators in Responsible Charge" (ORC)
of the respective systems and permits for the systems:
North Buffalo Water Reclamation Facility
Permit NoWC:00243=, ORC Nathan Osborne, [phone]
T. Z. Osborne Water Reclamation Facility
Permit No. NC0047384, ORC Lori Cooper, [phone] RECEI\
N.C.Dept. i
Sewage Collection System FEB 2 8
Permit No. WQCS00006, ORC Mark Malloy, [phone]
This report will be available at all City Water Resources Facilities, Libraries, the Melvin
Municipal Office Building, and also on the City's website. All customers will be notified
of its availability in the At Your Service newsletter, that are distributed in water and sewer
bills from March to May 2012. This report was compiled by staff of the Water Resources
Department and cost approximately $1,000.
The information contained herein is accurate to the degree possible_m
1.
FEB
DLi'r$-uV ao,: .: ALI Y
,- Steven Drew, Director of Water Resources OINI-rSo,:,(XIRANCH

The sewage collection and water reclamation
system of the City of Greensboro begins with
approximately 101,946 connections that serve
homes, commercial establishments, and industries.
Every day an average of 27 million gallons of
sewage is generated in our homes and industries
that must be collected, transported, and treated
to very stringent standards before it is released
back into our environment (in our streams). This
service is provided by the City's Water Resources
Department and is funded almost entirely from
the user charges that are paid monthly by our
customers.
Nearly all of the sewage or wastewater that is
generated by customers flows by gravity through
sewers that range from 6 to 72 inches in diameter.
As the lines leave neighborhoods they increase in
size to accommodate the flows that are collected
from the many areas that are served. These
sewers generally follow terrain to take advantage
of gravity flow but at certain low points pumping
stations are used to push the flow uphill to the next
drainage basin and set of lines.
Our sewer collection system transports
Greensboro's wastewater to two large water
reclamation facilities. The wastewater is processed
so that it can be returned to our streams with
minimal environmental impact. The North Buffalo
Facility and the T.Z. Osborne Facility are permitted
to process up to 16 and 40 million gallons of
wastewater per day, respectively.
Many of Greensboro's residents recognize that our
location is not ideal for water supply development;
our streams are very small because we are at
the top of the watershed where our streams drain
to limited amounts of land. What they may not
recognize is that this makes wastewater reclamation
very difficult as well. The permitting of treated
wastewater discharges makes the assumption that
streamflow is at the lowest volume so as to offer the
protection needed when streamflow is at its lowest.
In North Carolina, this process is known as 7Q10"
flow, or the lowest volume expected to occur on a
particular stream for 7 consecutive days once every
10 years. The permit limits for discharges takes this
level of stream protection into account in calculating
the limits; yet it applies 24 hours per day, 7 days per
week, 365 days per year. Since Greensboro's limits
are calculated for discharging to such small streams,
our limits are very low. Not only does North Carolina
have some of the most stringent stream standards
in the country, Greensboro is a large city located on
very small streams. Our discharge flow constitutes
over 97% of the stream below our discharge points
at the lowest streamflows; therefore our permits are
written so as to protect the streams at all times as
though such minimal flow was present.
Aerial photo of T.Z. Osborne Plant
Aerial photo of North Buffalo Plant

The City of Greensboro's Treatment plants operate
under National Pollutant Discharge Elimination
System permits, most commonly known as
NPDES. These are highly complex permits that
include monitoring requirements and discharge
limits, some of which vary from season to season
and have different maximums for daily values,
weekly averages, monthly averages, and quarterly
averages. The permits are complex and can be
viewed at our treatment plants upon request.
Compliance with these permits requires that our
laboratory must conduct over 10,500 tests per year.
Any one of these tests may result in a value that
causes us to violate the limits of the NPDES permit.
There are some limits, such as cyanide, fluoride,
selenium, and cadmium, over which the operators
of the treatment plant have no control other than
through regulating what industry and households
can discharge to the sewers.
During 2011 the Water Resources Department
treated 10.1 billion gallons of wastewater and
returned it to our streams. We are proud of the
outstanding performance of these facilities that
was made possible by the dedicated efforts of
the professionals who operate, maintain, and
conduct tests for these facilities. Whenever there
is a NPDES permit violation that occurs, we report
them to the State to ensure compliance with all
reporting regulations. A list of the violations that
occurred during the 2011 calendar year is at the
end of this report (Table 1 & 2). There were no
detected environmental impacts from any of these
permit excursions.
The City of Greensboro operates a sewage
collection system comprised of 1,593 miles of
gravity line, 39,054 manholes, 47 pump stations,
and 90 miles of pressurized sewage force
main. The system is subject to many rules and
regulations that are now in effect. All spills of any
volume must be reported to the State. Spills that
exceed 1,000 gallons must also be reported to all
outlets of the news media.
Sewage spills from a collection system can be
caused by a variety of reasons such as roots,
grease, pump station failures, rainwater overload
and foreign objects obstructing the sewer. A list
of sewage spills in excess of 1,000 gallons that
reached surfaced water is included at the end
of this report (Table 3). There were no detected
environmental impacts from any of these incidents.
Wastewater laboratory staff
Facility maintenance by wastewater staff

The City of Greensboro has an on -going cleaning
and inspection program to monitor and maintain
our sewer system, including rodding, high pressure
flushing, and closed circuit television inspection
of lines. The City has an aggressive program
to rehabilitate old leaking sewer lines to begin
reducing the amount of rainwater entering our
collection system. The total spending amount for
rehabilitation exceeds $3 million per year.
We are also enhancing our regulations of
grease discharge in those areas where we are
experiencing grease buildup in lines. In September
2011, the newly installed fluidized bed incinerator
system located at the TZO wastewater facility was
fully operational replacing the old deteriorating
system that was installed in 1996. The new
incinerator will provide solid disposal services
generated by both wastewater facilities.
The Water Resources Department continues
to upgrade our two water reclamation plants to
comply with the Jordan Lake Rules regulations.
The rules were issued to offer water quality
protection to the B. Everett Jordan Reservoir by
reducing the amount of nutrients, specifically
nitrogen and phosphorus, that enter streams
that empty to this water body. The phosphorus
limits were effective January 1, 2010 and the total
nitrogen NPDES limits, which will require additional
treatment processes will be effective January 1,
2016. In anticipation of the requirements, the City
will make process changes beginning early 2013.
The improvements will cost approximately $75
million in capital expenses.
It is the duty and responsibility of the City of
Greensboro Water Resources Department to
prevent the excessive introduction of oil and
grease into the sanitary sewer system and the
wastewater treatment plants. The FOG policy is
designed to outline, implement and enforce oil and
grease discharge rules and to have an educational
program for both residential and commercial
users. This policy is applicable to industries,
school cafeterias, nursing homes and all food
service establishments that discharge wastewater
containing grease to the City of Greensboro
sanitary sewer system. In order to reduce sewer
blockages, food service establishments discharging
wastewater that contains grease to the City of
Greensboro sanitary sewer system must install
and maintain a grease trap or grease interceptor
to prevent grease from entering the sewer system.
The accumulation of grease within sanitary sewer
lines increases the potential to create sewer
blockages. Sanitary sewer blockages can result in
sanitary sewer overflows (SSOs), which may reach
the surface waters of North Carolina.
Residential customers should also practice proper
disposal of cooking grease by placing grease in
sealed containers and discarding in the garbage.
To protect the environment reduce the amount of
fats, oils, and grease that enters the
sewer system.
The Greensboro Water Resources Department
is proud that given the capacity of our treatment
plants and the age of our collection system,
our permit departures have been minimal,
especially when compared to similar cities. We
recognize however, that in the changing climate
of environmental concern, total compliance is
demanded by the public.
For more information, please visit our website at
www.greensboro-nc.gov/water.

North Buffalo Publicly Owned Treatment Works
National Pollutant Discharge Elimination System (NPDES) Permit #NC0024325
Month ,Description `-N'urnber of 'Vio,lation.Type of Violation.', (s)
N/A N/A 0 0
Note: There were no environmental impacts noted for the above violations.
Definitions:
Monthly average —The arithmetic mean of all "daily discharges" of a pollutant measured during the calendar month.
Weekly average —The arithmetic mean of all "daily discharges" of a pollutant measured during the calendar week.
WATER RESOURCES ADMINISTRATION: 336-373-2055
T. Z. OSBORNE WATER RECLAMATION: 336-373-7740
NORTH BUFFALO WATER RECLAMATION: 336-373-5913
www.greensboro-nc.gov/water

Volume-
Permit Incident - .Surface
-
Permittee Reach-ing- :_- _ Location - Probable-Gause:. _.
.
Number Started : 'Surface
urfaceV!later. :.. - -.:. - - _ - - . _- - _
City of WQCS00006 1/2/2011 3,000 South Buffalo II 3835 Raintree Drive Grease
Greensboro
City of WQCS00006 1/14/2011 1,800 South Buffalo 1 4303 Green Point Drive Debris in line
Greensboro
City of
Greensboro
WQCS00006
8/2/2011
4,000
Horsepen Creek
Bledsoe Lift Station Pipe failure (Break)
Force Main

' Mickey, Mike
From:, Grzyb, Julie
Sent: Tuesday, March 06, 2012 1:22 PM
To: Mickey, Mike
Subject: RE: G-boro POTW's
Mike,
Thanks for the information and yes I will make those updates.
Julie
From: Mickey,. Mike
Sent: Tuesday, March 06, 2012 9:21 AM
To: Grzyb, Julie
Subject: RE: G-boro POTW's
Julie — Thanks for the update. The Public Water Supply Section confirmed that the first downstream intake on the Haw
River is the Town of Pittsboro's intake, approximately 65 river miles below the T.Z. Osborne outfall.
One request. Can you include the parameter code for "Calculated Combined Total Phosphorus Delivered Load (Ibs/yr)"
on the T.Z. Osborne's Effluent Limitations and Monitoring Requirements page? The code and the limit are listed in BIMS
below. I don't know if you have seen the calendar year combined delivered load sheet Greensboro attached to their
12/11 DMR, but it is not easy to pick out the TP annual combined delivered load data point to compare against the limit
of 49,299 Ibs/yr.
FYI — An annual TP combined delivered load of 68,196 Ibs/yr for 2011 was incorrectly entered in BIMS which created a
violation. The correct TP combined load was actually 33,812 Ibs/yr, which makes them compliant for 2011. 1 changed
that information in BIMS yesterday. Mike.
1

Mike Mickey
[e-mail]
NC Division of Water Quality
585 Waughtown Street
Winston-Salem, NC 27107
Phone: [phone]
FAX: [phone]
E-mail correspondence to and from this address may be subject to the North
Carolina Public Records Law and may be disclosed to third parties.
From: Grzyb, Julie
Sent: Monday, March 05, 2012 5:12 PM
To: Weaver, Charles; Mickey, Mike
Cc: Belnick, Tom; Templeton, Mike
Subject: RE: G-boro POTW's
Mike,
Despite being consumed into the dissolved metal world, I have these two permits nearly completed. The stream class
has changed from C; NSW to WS-V, NSW so while some metals were removed Nickel and four volatile organics had to be
added to the T.Z. Osborne permit (WS standards). Also, the Planning Unit is very concerned about the WS nitrates limit
of 10 mg/L being exceeded. Do you know where the nearest water intake is in relationship to TZ Osborne's outfall (how
many miles downstream?). I hope to address their concerns and catchup with Mike before the end of the week. Mike
Templeton is working on the metal fiscal note as well, however, I know new legislation was adopted changing the

timeline for the Jordan Reservior Nutrient Management Strategy so I wanted, his input. I expect to send the draft to the
Region and Greensboro within a week.
Sorry, I actually can not wait to get back to writing permits
Julie
From: Weaver, Charles
Sent: Monday, March 05, 2012 1:42 PM
To: Mickey, Mike
Cc: Grzyb, Julie; Belnick, Tom; Templeton, Mike
Subject: RE: G-boro POTW's
The Greensboro permits are a casualty of the Fiscal Note being prepared for the Dissolved Metals Standards. Julie hasn't been able to
work on them — or any of her other permits — for months. The Dissolved Metals project is a black hole that has now swallowed Mike T
also.
Those who wanted to cut government have succeeded. Our higher backlog is proof of that.
CHW
From: Mickey, Mike
Sent: Monday, March 05, 2012 1:34 PM
To: Weaver, Charles; Templeton, Mike
Subject: G-boro POTW's
Charles or Mike T. — Both of Greensboro's NPDES permits are expired. The previous permits were only valid for 8
months. BIMS does not show any renewal activity. Got any idea what the deal is? Thanks, Mike.
NCO047384 (TZ Osborne) - Issued 11/5/10, expired 6/30/11.
NCO024325 (N. Buffalo) - Issued 11/5/10, expired 6/30/11.
Mike Mickey
Mike. [e-mail]
NC Division of Water Quality
585 Waughtown Street
Winston-Salem, NC 27107
Phone: [phone]
FAX: [phone]
E-mail correspondence to and from this address may be subject to the North
Carolina Public Records Law and may be disclosed to third parties.

Mickey, Mike
From: Mickey, Mike
Sent: Tuesday, February 14, 2012 1:16 PM
To: 'Osborne, Ed'
Subject: RE: Back Up ORC Designation
Attachments: image001.png
Ed — We don't have anything in our files here, however, Leon is listed as one of the backup ORC's for N. Buffalo in our
database. The ORC change forms are typically handled by Training and Certification in Raleigh and they are not very
good at forwarding their paperwork to the regions. Hope this answers your question. If not, holler back. Mike.
j"Designated Operators:
* _ _-- _ -- -...
Location Glass.
i . ____ .._.. ___._ ..
O erator Cert
F 'Name__ - ___._ _ w
I_ ____ ___
Status
. __.
Role
Fs Effective Dt.i
Vv -4.
VWV-4.19898
Osborne, Nathan E.
Active
ORC
09119J2008
WW-4.
VWV-4.19004
Burroughs, James L.
Active
Backup
02108/2007
V V-4.
VWV-4.18756
Kling, VValter J.
Active
Backup
04105J2011
VWU 4.
VWV-41994872
Smith, Leon
Active
Backup
0312512011
Mike Mickey
IVI i ke.IVl ickev0 N CD EN R.eOV
NC Division of Water Quality
585 Waughtown Street
Winston-Salem, NC 27107
Phone: [phone]
FAX: [phone]
E-mail correspondence to and from this address maybe subject to the North
Carolina Public Records Law and may be disclosed to third parties.
From: Osborne, Ed [mailto:[e-mail]]
Sent: Tuesday, February 14, 2012 11:20 AM
To: Mickey, Mike
Subject: Back Up ORC Designation
Mike,
I was wondering if you got the designation form allowing Leon Smith to be a back up ORC at the North Buffalo WRF
Greensboro NC?
Ed Osborne, Plant Supervisor
Department of Water Resources
City of Greensboro
Phone: [phone] Fax:[phone]
2199 White Street, Greensboro NC 27405
[e-mail]

-------------------------------------------------------
-------------------------------------------------------
Please note that email sent to and from this address is subject
to the North Carolina Public Records Law and may be disclosed to third
parties.
z

City of Greensboro
Water Resources Department
Engineering Division
Flow Tracking/Acceptance for Sewer Extension Permit Applications
OW -A (COG-FTSE-10/07)
GREENSBORO
Permit Number: N/A
Project Applicant Name: City of Greensboro
Project Name for which flow is being requested: Annual Update
More than one COG-FTSE-10107 may be required for a single project if the owner of the WWTP is not responsible for all pump
stations along the route of the proposed wastewater flow.
I. Complete this section only if you are the owner of the wastewater treatment plant.
a. WWTP Facility Name: North Buffalo Water Reclamation Facility
b. WWTP Facility Permit Number: NCO024325
c. WWTP facility's permitted flow
d. Estimated obligated flow not yet tributary to the WWTP
e. WWTP facility's actual avg. flow
f. Total flow for this specific request
g. Total actual and obligated flows to the facility
h. Percent of permitted flow used
All flows are in MGD
16.0000
CS - 0.5306 SIU - 0.1506
5.54
II. Complete this section for each pump station you are responsible for along the route of this proposed wastewater flow.
Are there any pump stations affected? 0.00
List pump stations located between the project connection point and the WWTP
6.221180581
38.88
Pump Station Name Approx. Capacity, MGD Approx. Current Avg.
(Firm/Design) Daily Flow, MGD
Not Applicable n/a n/a
Not Applicable n/a n/a
Not Applicable n/a n/a
Not Applicable n/a n/a
III. Certification Statement:
I, Robert H. Bald, Jr. certify that, to the best of my knowledge, the addition of the volume of wastewater to be permitted in this project
has been evaluated along the route to the receiving wastewater treatment facility and that the flow from this project is not anticipated to
cause any capacity related sanitary sewer overflows or overburden any downstream pump stations enroute to the receiving treatment
plant. This analysis has been performed in accordance with local established policies and procedures using the best available data. This
certification applies to those items listed above in Sections I and II for which I am the responsible party. Signature of this form indicates
acceptance of this wastewater flow.
M4
Signing Official Signature
Date
-s-i of—,)

RECEIVED
W.C. Dept. of ENR I
—F City of Greensboro
J u L 1 rt' Water Resources Department
WATER
Winston-Salem Engineering Division
Regional Ohre J
(irlr:
�esources
. Flow TracIdng/Acceptance for Sewer Extension Permit Applications
; asirw~
`City of Greensboro (COG-FTSE-10/07)
Permit Number: N/A
Project Applicant Name: City of Greensboro
Project Name for which flow is being requested: Semi -Annual Update
More than one COG-FTSE-10107 maybe required for a single project if the owner of the WWTP is not responsible for all
pump stations along the route of the proposed wastewater flow.
I. Complete this section only if you are the owner of the wastewater -treatment plant.
a. WWTP Facility Name: , North Buffalo Water Reclamation Facility
b. WWTP Facility Permit Number: NCO024325
c. WWTP facility's permitted flow
d. Estimated obligated flow not yet tributary to the WWTP
e. WWTP facility's actual avg. flow
f. Total flow for this specific request
g. Total actual and obligated flows to the facility
h. Percent of permitted flow used
All flows are in MGD
16.0000
CS - 0.5306 + SIU - 0.1506
6.1300
0.0000
06.8112
42.57
II. Complete this section for each pump station you are responsible for along the route of this proposed wastewater
flow. Are there any pump stations affected? H
List pump stations, located between the project connection point and the WWTP
Pump Station Name
Approx. Capacity, MGD
Approx. Current Avg.
(Firm/Design)
Daily Flow, MGD
Not Applicable
n/a
n/a
Not Applicable
n/a
n/a
Not Applicable
n/a
n/a
Not Applicable
n/a
n/a
III. Certification Statement:
I, Robert H. Bald, Jr. certify that, to the best of my knowledge, the addition of the volume of wastewater to be
permitted in this project has been evaluated along the route to the receiving wastewater treatment facility and
that the flow from this project is not anticipated to cause any capacity related sanitary sewer overflows or
overburden any downstream pump stations enroute to the receiving treatment plant. This analysis has been
performed in accordance with local established policies and procedures using the best available data. This
certification applies to those items listed above in Sections I and II for which I am the responsible party. Signature
of this form indicates acceptance of this wastewater flow.
Signing Official Signature
7
Date

AiER RECEIVED
N.C, Dept off NR
sources JAN 12 2009
City of Greensboro Winston-Salem
Regional Office
Administration January 8, 2009
[phone]
Fax [phone]
Customer Service/ I Mr. Steve Maune
[phone] North Carol ' Department of Environment and Natural Resources
Fax [phone] Di of Water Quality, Water Quality Section
585 Waughtown Street
Water Supply Winston-Salem, NC 27107
Mitchell Plant
[phone] RE: Semi Annual Update FTSE Program
Fax [phone]
Townsend Plant
[phone]
Dear Mr. Mauney:
Fax [phone]
Enclosed you will find the semi-annual update for the City of Greensboro's North
Buffalo (Permit Number NC0024325) and T.Z. Osborne (Permit Number
NC0047384) Water Reclamation Facilities. Please note that this is the semi —
ter a
annual submission which is required by the 15th of this month.
ffalo Plant
North Buffalo Plant
No
[phone]
Fax [phone]
If there are any questions, please do not hesitate to contact me at 336-433-7370.
T.Z. Osborne Plant
[phone]
Fax [phone]
Sincerely,
Construction &
"49��
Maintenance
[phone]
Shameka S. Collins
Fax [phone]
Compliance Specialist
Water Resources -Engineering Division
Meter Services
[phone]
SSC
Fax [phone]
CC: Corey Basinger, Environmental Engineer
Water Conservation
[phone]
Kevin Eason, WR-Engineering Division Manager
Fax [phone]
Sonya Hyatt, Utility and Design Engineer
Robbie Bald, Civil Engineer
COGWR Files
Stormwater
Management
[phone]
Fax [phone]
Enclosures
1505 P.O. Box 3136, Greensboro, NC 27402-3136 • www greensboro-nc.gov • TDD [phone]

City of Greensboro
Water Resources Department
�11VATER :- fir,:. Engineering Division
Resources
plow Tracking/Acceptance for Sewer Extension Permit Applications
' City of Gre a sbo o (COG-1rSE-10/07)
Permit Number: N/A
Project Applicant Name: City of Greensboro
Project Name for which flow is being requested: Semi -Annual Update
More than one COG-FTSE-10107 may be required for a single project if the owner of the WWTP is not responsible for all
pump stations along the route of the proposed wastewater flow.
I. Complete this section only if you are the owner of the wastewater treatment plant.
a. WWTP Facility Name: North Buffalo Water Reclamation Facility
b. WWTP Facility Permit Number: NCO024325
All flows are in MGD
c. WWTP facility's permitted flow 16.0000
d. Estimated obligated flow not yet tributary to the WWTP CS - 0.9291 + SIU - 0.0976
e. WWTP facility's actual avg. flow, 6.6600
f. Total flow for this specific request
g. Total actual and obligated flows to the facility 07.6866
h. Percent of permitted flow used 48.04
H. Complete this section for each pump station you are responsible for along the route of this proposed wastewater
flow. Are there any pump stations affected? []
List pump stations located between the project connection point and the WWTP
Pump Station Name
Approx. Capacity, MGD
Approx. Current Avg.
(Firma/Design)
Daily Flow, MGD
Not Applicable
n/a
n/a
Not Applicable
n/a
n/a
Not Applicable
n/a
n/a
Not Applicable
n/a
n/a
III. Certification Statement:
I, Robert H. Bald, Jr. certify that, to the best of my knowledge, the addition of the volume of wastewater to be
permitted in this project has been evaluated along the route to the receiving wastewater treatment facility and
that the flow from this project is not anticipated to cause any capacity related sanitary sewer overflows or
overburden any downstream pump stations enroute to the receiving treatment plant. This analysis has been
performed in accordance with local established policies and procedures using the best available data. This
certification applies to those items listed above in Sections I and II for which I am the responsible party. Signature
of this form indicates acceptance of this wastewater flow.

Cover Sheet from
Staff Member to
Regional Supervisor
UNIR Review Record
Facility: °�j�ti I��U PermitfPipe No.:
Month/Year Q&L
Mo thly Average Violations
Parameter
Pernvt Limit DMR Value % Over Limit
eekly/Daily Violations
Date Parameter Pe Limit/Tv e D1vIR�Value %Over Limit
Monitoring Frequency Violations
Date Paramete Permit Freo encv Values Reported # of Violations
Other Violations
Date:
Completed by:
Regional Water Quality Date: ��� Z�V
Supervisor Signoff: _
� ��yZ 1 ��� ti�� •� c��- �'� �`�`� �..a� ,ems , �' �."� .

im
EFFLUENT ADDENDUM
NPDES PERMIT NO. N 024325� DISCHARGE NO. 001 MONTH AffS-cP%lf6eV' YEAR 2011AD,
FACILITY NAME +;I:iIsBI1i*F�i�Z-E3h�ATiERytTREArT.}14ENT PLANT CLASS IV COUNTY GUiLFORD
OPERATOR IN RESPONSIBLE CHARGE (ORC) NATHAN E. OSBORNE GRADE IV PHONE[phone]
CERTIFIED LABORATORIES (1) T.Z. OSBORNE LABORATORY (2) MERITECH, INC.
CHECK BOX IF ORC HAS CHANGED PERSON(S) LLIECTING SAMPLES,-') AUTOMATIC SAMPLERS
Mail ORIGINAL and ONE COPY to: ��11 / l�
ATTN: CENTRAL FILES X •�
DIVISION OF WATER QUALITY ( G ATU CSF OPERATO IN RESPONSIB RGE) DATE
1617 MAIL SERVICE CENTER BY THIS SIGNATURE, I CERTIFY THAT THIS R IfT IS
RALEIGH, NC 27699-1617 ACCURATE AND COMPLETE TO THE BEST OF MY KNOWLEDGE.

North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins
Governor Director RECEIVED
N.C. Deot. of ENR
.BAN 2 4 2011
I
January 20, 2011 tiv ,car, sere,
Reglonal Office
ALLAN WILLIAMS
WATER RESOURCES DIRECTOR
CITY OF GREENSBORO
PO BOX 3136
GREENSBORO NC 27402-3136
Dear Mr. Williams:
Dee Freeman
Secretary
Subject: Receipt of permit renewal application
NPDES Permit NCO024325
North Buffalo Creek WWTP
Guilford County
The NPDES Unit received your permit renewal application on January 4, 2011. A member of the NPDES
Unit will review your application. They will contact you if additional information is required to complete your
permit renewal. You should expect to receive a draft permit approximately 30-45 days before your existing permit
expires.
If you have any additional questions concerning renewal of the subject permit, please contact Tom Belnick
at [phone].
Sincerely,
Dina Sprinkle
Point Source Branch
cc: CENTRAL FILES
71. R final Office/Surface Water Protection
NPDES Unit
Mamie Groome, Laboratory and Industrial Waste Section Supervisor, City of Greensboro, PO Box 3136,
Greensboro, NC 27402-3136
1617 Pail Service Center, Raleigh, North Carolina 27699-1617
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604 One
Phone: [phone] \ FAX: [phone] Customer Service: 1-877-623-6748 NorthCarolina
Internet: www.ncwaterquality.org b An Equal Opportunity \ Affirmative Action Employer

t
City
6 .j North
of Greensboro
Carolina
December 29, 2010
NC DENR/DWQ
Attn: NPDES Unit
1617 Mail Service Center
Raleigh NC 27699-1617
Water Resources Department
RE: City of Greensboro North Buffalo NPDES Permit Application for Renewal (NC0024325)
To Whom It May Concern:
RECEIVED
N.C. Ceot. of E14R
Winston- Sales,
Regional Cff.
Enclosed please find three (3) copies of the North Buffalo POTW NPDES Permit Application for Renewal,
along with the required attachments.
On November 16, 2010, the City of Greensboro submitted a Request for Speculative Limits to DWQ for
the T. Z. Osborne POTW at 56 MGD (sent to Chuck Wakild, Matt Matthews and Jeff Poupart). This
request includes the plan to decommission the North Buffalo facility. We have not yet received a reply
and as mentioned in the original document, we would ask for an expedited response. Obviously,
depending on the outcome of the Speculative Limits Request, the City may need/wish to amend the
enclosed permit application.
As soon as possible, please provide written documentation that the NPDES Unit has received the North
Buffalo application and that it is considered complete.
If you have any questions or need additional information, please do not hesitate to contact me.
Sincerely,
"nu)a�-11 -.
Martie Groome
Laboratory and In ustrial Waste Section Supervisor
Phone [phone]
Email: [e-mail]
cc: Allan Williams, Director of Water Resources (via email with documents attached)
Kenney McDowell, Deputy Directory of Water Resources (via email with documents attached)
Don Howard, Water Reclamation Manager (via email with documents attached)
Walter Kling, Operations Superintendent (via email with hard copy documents)
Ed Osborne, ORC-North Buffalo (via email with hard copy documents)
Vr 5
PO Box 3136 • Greensboro, NC 27402-3136 � www.Vreensboro-nc.gov 1336-373-CITY (2489) � TTY # 333-6930

FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
City of Greensboro North Buffalo, NCO024325 Renewal Cape Fear
FORM
2A M
FRM APP O2A LICATION ©VERVIEW
NPDES
APPLICATION OVERVIEW
Form 2A.has been developed in a, modular format and consists of a "Basic Application Information" packet
and a "Supplemental Application Information" packet.. The Basic Application Information packet is divided
into two parts. All applicants must complete Parts A and C. Applicants with a design flow greater than or.
equal to 0.1 mgd must also complete Part B. Some applicants'must also complete the Supplemental
Application Information packet. The following items explain which parts of Form 2A you must complete. .
BASIC APPLICATION INFORMATION:
A. Basic Application Information for all Applicants. All applicants must complete questions A.1 through A.8. A treatment works
that discharges effluent to surface waters of the United States must also answer questions A.9 through A.12.
B. Additional Application Information for Applicants with a Design Flow z 0.1 mgd. All treatment works that have design flows
greater than or equal to 0.1 million gallons per day must complete questions B.1 through 13.6. RECEIVED
N.C. Dept, of ENR
C. Certification. All applicants must complete Part C (Certification).
JAB 2 4 2011
SUPPLEMENTAL APPLICATION INFORMATION: Wnston-Salern
Regional Office
D. Expanded Effluent Testing Data. A treatment works that discharges effluent to surface waters of the United States and meets
one or more of the following criteria must complete Part D (Expanded Effluent Testing Data):
1. Has a design flow rate greater than or equal to 1 mgd,
2. Is required to have a pretreatment program (or has one in place), or
3. Is otherwise required by the permitting authority to provide the information.
E. Toxicity Testing Data. A treatment works that meets one or more of the following criteria must complete Part E (Toxicity Testing
Data):
1. Has a design flow rate greater than or equal to 1 mgd,
2. Is required to have a pretreatment program (or has one in place), or
3. Is otherwise required by the permitting authority to submit results of toxicity testing.
F. Industrial User Discharges and RCRA/CERCLA Wastes. A treatment works that accepts process wastewater from any
significant industrial users (SIUs) or receives RCRA or CERCLA wastes must complete Part F (Industrial User Discharges
and RCRA/CERCLA Wastes). SIUs are defined as:
1. All industrial users subject to Categorical Pretreatment Standards under 40 Code of Federal Regulations (CFR) 403.6 and
40 CFR Chapter I, Subchapter N (see instructions); and
2. Any other industrial user that:
a. Discharges an average of 25,000 gallons per day or more of process wastewater to the treatment works (with certain
exclusions); or
b. Contributes a process wastestream that makes up 5 percent or more of the average dry weather hydraulic or organic
capacity of the treatment plant; or
C. Is designated as an SIU by the control authority.
G. Combined Sewer Systems. A treatment works that has a combined sewer system must complete-Part-G (Combined_Sewer
Systems). i
o
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 1 of 22

FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
City of Greensboro North Buffalo, NCO024325 Renewal Cape Fear
B AI1,IC A:PPLI E INN IRRO R AF,
PART A, BASIC APPLICATION INFORIVIATIO FOR ALL APPLICANTS:
All treatment works must complete questions A.1 through A.8 of this Basic Application Information Packet
A.1. Facility Information.
Facility Name CITY OF GREENSBORO NORTH BUFFALO WASTEWATER TREATMENT FACILITY
Mailing Address BOX 3136
GREENSBORO, NORTH CAROLINA 27402-3136
Contact Person ALLAN WILLIAMS
Title CITY OF GREENSBORO DIRECTOR OF WATER RESOURCES
Telephone Number [phone]
Facility Address 2199 WHITE STREET
(not P.O. Box) GREENSBORO, NORTH CAROLINA 27405
A.2. Applicant Information. If the applicant is different from the above, provide the following:
Applicant Name
Mailing Address
Contact Person
Title
Telephone Number ( )
Is the applicant the owner or operator (or both) of the treatment works?
® owner ❑ operator
Indicate whether correspondence regarding this permit should be directed to the facility or the applicant.
® facility ❑ applicant
A.3. Existing Environmental Permits. Provide the permit number of any existing environmental permits that have been issued to the treatment works
(include state -issued permits).
NPDES NCO024325 PSD
UIC Other Storm Water #NCG110000 COC NCG110004
RCRA Other Collection System WQCS00006
A.4. Collection System Information. Provide information on municipalities and areas served by the facility. Provide the name and population of each
entity and, if known, provide information on the type of collection system (combined vs. separate) and its ownership (municipal, private, etc.).
Name Population Served Type of Collection System Ownership
Greensboro NC (and parts of —50,000 separate sanitary sewer system City of Greensboro
Guilford County NC)
Total population served—50,000
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 2 of 22

FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
City of Greensboro North Buffalo, NCO024325 Renewal Cape Fear
A.S. Indian Country.
a. Is the treatment works located in Indian Country?
❑ Yes ® No
b. Does the treatment works discharge to a receiving water that is either in Indian Country or that is upstream from (and eventually flows
through) Indian Country?
❑ Yes ® No
A.6. Flow. Indicate the design flow rate of the treatment plant (i.e., the wastewater flow rate that the plant was built to handle). Also provide the
average daily flow rate and maximum daily flow rate for each of the last three years. Each year's data must be based on a 12-month time period
with the 12th month of "this year" occurring no more than three months prior to this application submittal.
a. Design flow rate 16.0 mgd
Two Years Ago Last Year This Year
b. Annual average daily flow rate 6.66 MGD rCY20081 5.85 MGD rCY20091 5.52 MGD r2010-10mo1
C. Maximum daily flow rate 9.97 MGD rCY20081 7.26 MGD ICY20091 9.86 MGD 1`2010-10mo1
A.7. Collection System. Indicate the type(s) of collection system(s) used by the treatment plant. Check all that apply. Also estimate the percent
contribution (by miles) of each.
® Separate sanitary sewer 100 %
❑ Combined storm and sanitary sewer 0 %
A.8. Discharges and Other Disposal Methods.
a. Does the treatment works discharge effluent to waters of the U.S.? ® Yes ❑ No
If yes, list how many of each of the following types of discharge points the treatment works uses:
i. Discharges of treated effluent
ii. Discharges of untreated or partially treated effluent
iii. Combined sewer overflow points
iv. Constructed emergency overflows (prior to the headworks)
V. Other
b. Does the treatment works discharge effluent to basins, ponds, or other surface impoundments
that do not have outlets for discharge to waters of the U.S.? ❑ Yes
If yes, provide the following for each surface impoundment:
Location:
Annual average daily volume discharge to surface impoundment(s)
Is discharge ❑ continuous or ❑ intermittent?
C. Does the treatment works land -apply treated wastewater?
If yes, provide the following for each land application site:
d.
Location:
Number of acres:
Annual average daily volume applied to site:
Is land application ❑ continuous or ❑ intermittent?
Does the treatment works discharge or transport treated or untreated wastewater to another
treatment works?
1 (one)
0 (none)
0 (none)
0 (none)
® No
❑ Yes
mgd
mgd
® No
® Yes ❑ No
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 3 of 22

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
City of Greensboro North Buffalo, NCO024325
Renewal
Cape Fear
If yes, describe the mean(s) by which the wastewater from the treatment works is discharged or transported to the other treatment works
(e.g., tank truck, pipe).
Influent wastewater is pumped/piped from the North Buffalo POTW to the City of Greensboro T. Z. Osborne POTW
If transport is by a party other than the applicant, provide:
Transporter Name
Mailing Address
Contact Person
Title
Telephone Number ( )
For each treatment works that receives this discharge, provide the following:
Name CITY OF GREENSBORO T. Z. OSBORNE WASTEWATER TREATMENT FACILITY
Mailing Address BOX 3136
GREENSBORO, NORTH CAROLINA 27401
Contact Person ALLAN WILLIAMS
Title CITY OF GREENSBORO DIRECTOR OF WATER RESOURCES
Telephone Number [phone]
If known, provide the NPDES permit number of the treatment works that receives this discharge NCO047384
Provide the average daily flow rate from the treatment works into the receiving facility. 8.85 11/1/2009 to 6/30/20101 mgd
e. Does the treatment works discharge or dispose of its wastewater in a manner not included
in A.8. through A.8.d above (e.g., underground percolation, well injection): ❑ Yes ® No
If yes, provide the following for each disposal method:
Description of method (including location and size of site(s) if applicable):
Annual daily volume disposed by this method:
Is disposal through this method ❑ continuous or ❑ intermittent?
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 4 of 22

[FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
City of Greensboro North Buffalo, NCO024325 Renewal Cape Fear
WASTEWATER DISCHARGES:
If you answered "Yes" to question A.8.a, complete questions A.9 through A.12 once for each outfall (including bypass points) through
which effluent is discharged. Do not include information on combined sewer overflows in this section. If you answered "No" to question
A.8.a, go to Part B, "Additional Application Information for Applicants with a Design Flow Greater than or Equal to 0.1 mgd."
A.9. Description of Outfall.
a. Ouffall number
b. Location GREENSBORO 27405
(City or town, if applicable) (Zip Code)
GUILFORD NORTH CAROLINA
(County) (State)
36'06'34" 79°44'53"
(Latitude) (Longitude)
C. Distance from shore (if applicable) NOT APPLICABLE ft.
d. Depth below surface (if applicable) NOT APPLICABLE ft.
e. Average daily flow rate [CY2010 Jan -Oct] 5.52 mgd
f. Does this outfall have either an intermittent or a periodic discharge? ❑ Yes ® No (go to A.9.g.)
If yes, provide the following information:
Number f times per year discharge occurs:
Average duration of each discharge:
Average flow per discharge:
Months in which discharge occurs:
g. Is outfall equipped with a diffuser?
A.10. Description of Receiving Waters.
❑ Yes ® No
mgd
a. Name of receiving water North Buffalo Creek—. Buffalo Cr—. Reedy Fork Cr—. Haw River--. Cape Fear River
b. Name of watershed (if known) Cape Fear River Basin
United States Soil Conservation Service 14-digit watershed code (if known): 03030002020040
C. Name of State Management/River Basin (if known): Cape Fear River Basin
United States Geological Survey 8-digit hydrologic cataloging unit code (if known): 0303004
d. Critical low flow of receiving stream (if applicable)
acute
cfs
e. Total hardness of receiving stream at critical low flow (if applicable):
chronic 7Q10 = 0.9 cfs
NOT APPLICABLE mg1I of CaCO3
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 8 7550-22.
Page 5 of 22

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
City of Greensboro North Buffalo, NCO024325
Renewal
Cape Fear
A.11. Description of Treatment
a. What level of treatment are provided? Check all that apply.
® Primary ® Secondary
® Advanced ❑ Other. Describe:
b. Indicate the following removal rates (as applicable):
Design BOD5 removal or Design CBOD5 removal NOT APPLICABLE %
Design SS removal NOT APPLICABLE %
Design P removal NOT APPLICABLE %
Design N removal NOT APPLICABLE %
Other %
C. What type of disinfection is used for the effluent from this outfall? If disinfection varies by season, please describe:
Chlorination using sodium hvpochlorite (year-round)
If disinfection is by chlorination is dechlorination used for this outfall? ® Yes ❑ No
Does the treatment plant have post aeration? ® Yes ❑ No
A.12. Effluent Testing Information. All Applicants that discharge to waters of the US must provide effluent testing data for the following
parameters. Provide the indicated effluent testing required by the permitting authority for each outfall through which effluent is
discharged. Do not include information on combined sewer overflows in this section. All information reported must be based on data
collected through analysis conducted using 40 CFR Part 136 methods. In addition, this data must comply with QA/QC requirements of
40 CFR Part 136 and other appropriate QA/QC requirements for standard methods for analytes not addressed by 40 CFR Part 136. At a
minimum, effluent testing data must be based on at least three samples and must be no more than four and one-half years apart.
Outfall number: 001 [Data from 1-1-2009 through 6-30-20101
MAXIMUM DAILY VALUE
AVERAGE DAILY VALUE
PARAMETER
Value
Units
Value
Units
Number of Samples
pH (Minimum)
6.38
s.u.
pH (Maximum)
7.44
s.u.
Flow Rate
9.86
MGD
5.82
MGD
546
Temperature (Winter) 111/1-3/311
21.3
°C
15.6
°C
164
Temperature (Summer) [4/1-10/31]
27.8
°C
22.8
°C
212
For pH please report a minimum and a maximum daily value
MAXIMUM DAILY
AVERAGE DAILY DISCHARGE
POLLUTANT
DISCHARGE
ANALYTICAL
ML/MDL
Number of
METHODSamples
Conc.
Units
Conc.
Units
CONVENTIONAL AND NON CONVENTIONAL COMPOUNDS
BIOCHEMICAL OXYGEN
BOD5
DEMAND (Report one)
CBOD5
14
mg/I
1.12 mg/I 376
SM 5210 B
2 mg/1
FECAL COLIFORM [*geometric mean]
4100
/100 ml
11* 1100 ml 376
SM 9222 D
1 Co[/100 ml
TOTAL SUSPENDED SOLIDS (TSS)
38.4 mg/I
4.95 mg/I 376 SM 2540 D 1 mg/I
�N'D OF PART A,
RBF�R TO TFI�� APPLICATION O1/ER1iI�FU19 PAGE 1) TO DFT�R14�iINE 4�IHIOH DTI-I�I� Pf1RTS
OF FORI1dl 2A Y®U ItlIUST �OIdfIPLr�TE
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 6 of 22

FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED:
RIVER BASIN:
City of Greensboro North Buffalo, NCO024325 Renewal
Cape Fear
BASIC APPLICATION INFORMATION
PART B. ADDITIONAL APPLICATION INFORMATION FOR APPLICANTS WITH A DESIGN FL©W GREATER THAN OR
EQUAL TO 0.1 MGD (Mim gallons per day).
All applicants with a design flow rate z 0.1 mgd must answer questions B.1 through B.S. All others go to Part C (Certification).
B.1. Inflow and Infiltration. Estimate the average number of gallons per day that flow into the treatment works from inflow and/or infiltration.
Unknown gpd
Briefly explain any steps underway or planned to minimize inflow and infiltration.
Dept. annual budget for sewer rehabilitation [slip lining, cure -in -place, pipe bursting, etcl CY2008 = $3M CY2009 = $3.25M CY 2010 = $3.75M
B.2. Topographic Map. Attach to this application a topographic map of the area extending at least one mile beyond facility property boundaries. This
map must show the outline of the facility and the following information. (You may submit more than one map if one map does not show the entire
area.)
a. The area surrounding the treatment plant, including all unit processes.
b. The major pipes or other structures through which wastewater enters the treatment works and the pipes or other structures through which
treated wastewater is discharged from the treatment plant. Include outfalls from bypass piping, if applicable.
c. Each well where wastewater from the treatment plant is injected underground.
d. Wells, springs, other surface water bodies, and drinking water wells that are: 1) within '% mile of the property boundaries of the treatment
works, and 2) listed in public record or otherwise known to the applicant.
e. Any areas where the sewage sludge produced by the treatment works is stored, treated, or disposed.
f. If the treatment works receives waste that is classified as hazardous under the Resource Conservation and Recovery Act (RCRA) by truck, rail,
or special pipe, show on the map where the hazardous waste enters the treatment works and where it is treated, stored, and/or disposed.
B.3. Process Flow Diagram or Schematic. Provide a diagram showing the processes of the treatment plant, including all bypass piping and all
backup power sources or redundancy in the system. Also provide a water balance showing all treatment units, including disinfection (e.g.,
chlorination and dechlorination). The water balance must show daily average flow rates at influent and discharge points and approximate daily flow
rates between treatment units. Include a brief narrative description of the diagram.
B.4. Operation/Maintenance Performed by Contractor(s).
Are any operational or maintenance aspects (related to wastewater treatment and effluent quality) of the treatment works the responsibility of a
contractor? ❑ Yes ® No
If yes, list the name, address, telephone number, and status of each contractor and describe the contractor's responsibilities (attach additional
pages if necessary).
Name:
Mailing Address:
Telephone Number: ( 1
Responsibilities of Contractor:
B.S. Scheduled improvements and Schedules of Implementation. Provide information on any uncompleted implementation schedule or
uncompleted plans for improvements that will affect the wastewater treatment, effluent quality, or design capacity of the treatment works. If the
treatment works has several different implementation schedules or is planning several improvements, submit separate responses to question B.5
for each. (If none, go to question B.6.)
a. List the outfall number (assigned in question A.9) for each outfall that is covered by this implementation schedule.
Outfall 001 Annual Mass Total Nitrogen Limits effective CY2016 and thus BNR processes will be required
b. Indicate whether the planned improvements or implementation schedule are required by local, State, or Federal agencies.
® Yes ❑ No
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22, Page 7 of 22

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
City of Greensboro North Buffalo, NCO024325
Renewal
Cape Fear
C. If the answer to B.5.b is "Yes," briefly describe, including new maximum daily inflow rate (if applicable).
Not Applicable
d. Provide dates imposed by any compliance schedule or any actual dates of completion for the implementation steps listed below, as
applicable. For improvements planned independently of local, State, or Federal agencies, indicate planned or actual completion dates, as
applicable. Indicate dates as accurately as possible.
Schedule Actual Completion
Implementation Stage MM/DD/YYYY MM/DD/YYYY
Begin Construction
- End Construction
Begin Discharge
- Attain Operational Level
e. Have appropriate permits/clearances concerning other Federal/State requirements been obtained? ® Yes ❑ No
Describe briefly: Engineering study has been completed and various BNR treatment scenarios are being considered.
B.6. EFFLUENT TESTING DATA (GREATER THAN 0.1 MGD ONLY).
Applicants that discharge to waters of the US must provide effluent testing data for the following parameters. Provide the indicated
effluent testing required by the permitting authority for each outfall through which effluent is discharged. Do not include information
on combine sewer overflows in this section. All information reported must be based on data collected through analysis conducted
using 40 CFR Part 136 methods. In addition, this data must comply with QA/QC requirements of 40 CFR Part 136 and other appropriate
QA/QC requirements for standard methods for analytes not addressed by 40 CFR Part 136. At a minimum effluent testing data must be
based on at least three pollutant scans and must be no more than four and on -half years old.
Outfall Number: 001_ [Data from 1-1-2009 through 6-30-20101
MAXIMUM DAILY
DISCHARGE
AVERAGE DAILY DISCHARGE
POLLUTANT
ANALYTICAL
MUMDL
Number of
METHOD
Conc.
Units
Conc.
Units
Samples
CONVENTIONAL AND NON CONVENTIONAL COMPOUNDS
AMMONIA (as N)
12.3
mg/1 0.78 mg/l 376
SM 4500 NH3 F
0.1 mg/I
CHLORINE (TOTAL
RESIDUAL, TRC)
0.068
mg/I 0.0013 mg/I 376
SM 4500 C1 G
0.014 mg/I
DISSOLVED OXYGEN
10.35
mg/I 8.25 mg/I 376
SM 4500 O G
0.5 mg/I
TOTAL KJELDAHL
NITROGEN (TKN)
10.6
mg/I 1.05 mg/l 78
EPA 351.1
0.2 mg/l
NITRATE PLUS NITRITE
NITROGEN
19.5
mg/l 15.011 mg/l 78
EPA 353.2
0.1 mg/I
OIL and GREASE
<5
mg/l <5 mg/I 3
EPA 413.1
5 mg/I
PHOSPHORUS (Total)
1.87
mg/I 0.75 mg/I 77
SM 4500 P E
0.1 mg/I
TOTAL DISSOLVED SOLIDS
(TDS)
295
mg/I 261 mg/I 3
SM 2540 C
10 mg/I
OTHER
END ©F PART B.
RE ER TO TH'E APPLICATION OVER bEW (PAGE q TO DETER INE
WH CH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 8 of 22

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
City of Greensboro North Buffalo, NCO024325
Renewal
Cape Fear
BASIC APPLICATION"INFORMATION
PART,C: CERTIFICATION .
All applicants must complete the Certification Section. Refer to instructions to determine who is an officer for the purposes of this
certification. All applicants must complete all applicable sections of Form 2A, as explained in the Application Overview. Indicate below which
parts of Form 2A you have completed and are submitting. By signing this certification statement, applicants confirm that they have reviewed
Form 2A and have completed all sections that apply to the facility for which this application is submitted.
Indicate which parts of Form 2A you have completed and are submitting:
® Basic Application Information packet Supplemental Application Information packet:
® Part D (Expanded Effluent Testing Data)
® Part E (Toxicity Testing: Biomonitoring Data)
® Part F (Industrial User Discharges and RCRAICERCLA Wastes)
❑ Part G (Combined Sewer Systems)
ALL APPLICANTS.MUST COMPLETE THE FOLLOWING CERTIFICATION.
certify under penalty of law that this document and all of achments were prepared under my direction or supervision in accordance with a system
designed to assure that qualified personnel properly Bath r and evaluate the information submitted. Based on my inquiry of the person or persons who
manage the system or those persons directly responsible'for gathering the information, the information is, to the best of my knowledge and belief, true,
accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment
for knowing violations.
Name and official title ALLAN WILLIAMS, CITY OF GREENSBORO WATER RESOURCES DIRECTOR
Signature
Telephone number 336 373-2055
Date signed - Z /�
Upon request of the permitting authority, you must submit any other information necessary to assure wastewater treatment practices at the treatment
works or identify appropriate permitting requirements.
SEND COMPLETED FORMS TO:
NCDENR/ DWQ
Attn: NPDES Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 9 of 22

FACILITY NAME AND PERMIT NUMBER:
City of Greensboro North Buffalo, NCO024325
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN. "
Cape Fear
SUPPLEME-NTAL APPLICATION INFORMATION
PART D. EXPANDED EFFLUENT TESTING DATA
Refer to the directions on the cover page to determine whether this section applies to the treatment works.
Effluent Testing: 1.0 mgd and Pretreatment Works. If the treatment works has a design flow greater than or equal to 1.0 mgd or it has (or is required
to have) a pretreatment program, or is otherwise required by the permitting authority to provide the data, then provide effluent testing data for the following
pollutants. Provide the indicated effluent testing information and any other information required by the permitting authority for each outfall through which
effluent is discharged. Do not include information on combined sewer overflows in this section. All information reported must be based on data collected
through analyses conducted using 40 CFR Part 136 methods. In addition, these data must comply with QA/QC requirements of 40 CFR Part 136 and
other appropriate QA/QC requirements for standard methods for analytes not addressed by 40 CFR Part 136. Indicate in the blank rows provided below
any data you may have on pollutants not specifically listed in this form. At a minimum, effluent testing data must be based on at least three pollutant
scans and must be no more than four and one-half years old.
Outfall number: 001 (Complete once for each outfall discharging effluent to waters of the United States.)
POLLUTANT
MAXIMUM DAILY DISCHARGE
AVERAGE DAILY DISCHARGE
ANALYTICAL
METHOD
MUMDL
Conc.
Units
Mass
Units
Conc.
Units
Mass
Units
Number
of
Samples
METALS (TOTAL RECOVERABLE), CYANIDE, PHENOLS, AND HARDNESS.
ANTIMONY
<25
Ng/I
<25
pg/I
3
EPA 200.7
25 pg/I
ARSENIC
<10
Ng/I
<10
pg/I
9
EPA 200.7
10 pg/I
BERYLLIUM
<5
Ng/I
<5
pg/I
9
EPA 200.7
5 Ng/I
CADMIUM
<2
pg/I
<2
pg/I
78
SM 3120 B
2 pg/I
CHROMIUM
<10
pg/I
<10
pg/l
78
SM 3120 B
10 Ng/l
COPPER
11
pg/I
<10
pg/I
78
SM 3120 B
10 pg/l
LEAD
15
Ng/I
<25
pg/I
84
SM 3120 B
25 Ng/l
MERCURY
38.9
ng/I
3.1
ng/l
78
EPA 1631
1 ng/I
NICKEL
11
pg/I
<10
pg/I
78
SM 3120 B
10 pg/I
SELENIUM
<10
pg/I
<10
pg/I
9
SM 3120 B
10 Ng/I
SILVER
<10
Ng/I
<10
pg/I
78
SM 3120 B
10 pg/I
THALLIUM
<20
pg/I
<20
Ng/I
3
EPA 200.7
20 pg/I
ZINC
66
pg/1
47
pg/I
78
SM 3120 B
10 Ng/I
CYANIDE [PQL=20 pg/l]
<20
Ng/I
<20
Ng/I
78
EPA 335.2
20 pg/I
TOTAL PHENOLIC
COMPOUNDS
0.022
mg/I
0.01
mg/I
3
EPA 420.1
0.01 mg/I
HARDNESS (as CaCO3)
65
mg/I
56
mg/I
37
EPA 200.7
0.662 mg/I
Use this space (or a separate sheet) to provide information on other metals requested by the permit writer
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 10 of 22

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
City of Greensboro North Buffalo, NCO024325
Renewal
Cape Fear
Outfall number: 001 (Complete once for each outfall discharging effluent to waters of the United States.)
MAXIMUM DAILY DISCHARGE
AVERAGE DAILY DISCHARGE
POLLUTANT
ANALYTICAL
ML/MDL
Number
Conc.
Units
Mass
Units
Conc.
Units
Mass
Units
of
METHOD
Samples
VOLATILE ORGANIC COMPOUNDS
ACROLEIN
<50.0
pg/I
<50.0
pg/I
3
EPA 624+AA
50.0 pg/1
ACRYLONITRILE
<10.0
pg/l
<10.0
pg/I
3
EPA 624+AA
10.0 pg/I
BENZENE
<1.0
pg/I
<1.0
pg/I
3
EPA 624
1.0 pg/I
BROMOFORM
<1.0
pg/l
<1.0
pg/I
3
EPA 624
1.0 pg/I
CARBON
<1.0
pg/I
<1.0
pg/I
3
EPA 624
1.0 pg/I
TETRACHLORIDE
CHLOROBENZENE
<1.0
pg/I
<1.0
pgll
3
EPA 624
1.0 pg/I
CHLORODIBROMO-
<1.0
pg/I
<1.0
pg/I
3
EPA 624
1.0 pg/I
METHANE
CHLOROETHANE
<5.0
pg/I
<5.0
pg/I
3
EPA 624
5.0 pg/1
2-CHLOROETHYLVINYL
<5.0
pg/I
<5.0
pg/I
3
EPA 624
5.0 pg/I
ETHER
CHLOROFORM
1.26
pg/I
<1.0
pg/I
3
EPA 624
1.0 pgll
DICHLOROBROMO-
<1.0
pg/I
<1.0
pg/I
3
EPA 624
1.0 pg/I
METHANE
1,1-DICHLOROETHANE
<1.0
pg/I
<1.0
pg/I
3
EPA 624
1.0Pg/I
1,2-DICHLOROETHANE
<1.0
pg/I
<1.0
pg/I
3
EPA 624
1.0 pgll
TRANS-1,2-DICHLORO-
<1.0
pg/l
<1.0
pg/I
3
EPA 624
1.0 pg/I
ETHYLENE
1,1-DICHLORO-
<1.0
pg/I
<1.0
pg/I
3
EPA 624
1.0 pg/I
ETHYLENE
1,2-DICHLOROPROPANE
<1.0
pg/I
<1.0
pg/I
3
EPA 624
1.0 pg/I
1,3-DICHLORO-
<1.0
pg/I
<1.0
pg/I
3
EPA 624
1.0 pg/I
PROPYLENE
ETHYLBENZENE
<1.0
pg/l
<1.0
pg/I
3
EPA 624
1.0 pgll
METHYL BROMIDE
<5.0
pg/l
<5.0
pg/I
3
EPA 624
5.0 pg/I
METHYL CHLORIDE
<5.0
pg/I
<5.0
pg/I
3
EPA 624
5.0 pg/I
METHYLENE CHLORIDE
<1.0
pg/I
<1.0
pg/I
3
EPA 624
1.0 pg/I
1,1,2,2-TETRA-
<1.0
pg/I
<1.0
pg/I
3
EPA 624
1.0 pg/I
CHLOROETHANE
TETRACHLORO-
<1.0
pg/I
<1.0
pg/I
3
EPA 624
1.0 pg/I
ETHYLENE
TOLUENE
<1.0
pg/I
<1.0
pg/I
3
EPA 624
1.0 pg/I
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 11 of 22

FACILITY NAME AND PERMIT NUMBER:
City of Greensboro North Buffalo, NCO024325
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Cape Fear
Outfall number: 001 (Complete once for each outfall discharging effluent to waters of the United States.)
POLLUTANT
MAXIMUM DAILY DISCHARGE
AVERAGE DAILY DISCHARGE
ANALYTICAL
METHOD
MUMDL
Conc.
Units
Mass
Units
Conc.
Units
Mass
Units
Number
of
Samples
1,1,1
TRICHLOROETHANE
<1.0
pg/I
<1.0
pg/l
3
EPA 624
1.0 pg/l
1,1,2
TRICHLOROETHANE
<1.0
pg/I
<1.0
pg/1
3
EPA 624
1.0 pg/I
TRICHLOROETHYLENE
<1.0
pg/I
<1.0
pgll
3
EPA 624
1.0 pg/l
VINYL CHLORIDE
<5.0
pg/l
<5.0
pg/I
3
EPA 624
5.0 pg/I
Use this space (or a separate sheet) to provide information on other volatile organic compounds requested by the permit writer
ACID -EXTRACTABLE COMPOUNDS
P-CHLORO-M-CRESOL
<10
pgll
<10
pg/I
3
EPA 625
10 pg/I
2-CHLOROPHENOL
<10
pgll
<10
pg/I
3
EPA 625
10 pg/1
2,4-DICHLOROPHENOL
<10
pgll
<10
pg/I
3
EPA 625
10 p9/1
2,4-DIMETHYLPHENOL
<10
pg/l
<10
pg/I
3
EPA 625
10 pg/l
4,6-DINITRO-0-CRESOL
<50
pg/l
<50
pg/l
3
EPA 625
50 pg/l
2,4-DINITROPHENOL
<50
pg/l
<50
pg/l
3
EPA 625
50 pg/l
2-NITROPHENOL
<10
pgll
<10
pgll
3
EPA 625
10 pg/l
4-NITROPHENOL
<50
pg/l
<50
pg/l
3
EPA 625
50 pg/I
PENTACHLOROPHENOL
<50
pgll
<50
pgll
3
EPA 625
50 pg/I
PHENOL
<10
pg/I
<10
pg/1
3
EPA 625
10 pg/1
2,4,6
TRICHLOROPHENOL
<10
Pg/l
<10
pg/I
3
EPA 625
10 pg/I
Use this space (or a separate sheet) to provide information on other acid -extractable compounds requested by the permit writer
BASE -NEUTRAL COMPOUNDS
ACENAPHTHENE
<10
pg/I
<10
pg/I
3
EPA 625
10 pg/I
ACENAPHTHYLENE
<10
pg/1
<10
pgll
3
EPA 625
10 pg/l
ANTHRACENE
<10
pg/l
<10
pgll
3
EPA 625
10 pg/l
BENZIDINE
<50
pg/l
<50
pgll
3
EPA 625
50 pg/1
BENZO(A)ANTHRACENE
<10
pg/I
<10
pg/l
3
EPA 625
10 pg/l
BENZO(A)PYRENE
<10
pg/l
<10
pgll
3
EPA 625
10 pg/I
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550.6 & 7550-22. Page 12 of 22

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
City of Greensboro North Buffalo, NCO024325
Renewal
Cape Fear
Outfall number: 001 (Complete once for each outfall discharging effluent to waters of the United States.)
MAXIMUM
DAILY DISCHARGE
AVERAGE
DAILY DISCHARGE
POLLUTANT
ANALYTICAL
ML/MDL
Number
Conc.
Units
Mass
Units
Conc.
Units
Mass
Units
of
METHOD
Samples
3,4 BENZO-
<10
Ng/I
<10
Ng/I
3
EPA 625
10 Ng/I
FLUORANTHENE
BENZO(GHI)PERYLENE
<10
Ng/I
<10
Ng/I
3
EPA 625
10 Ng/I
BENZO(K)
<10
Ng/I
<10
Ng/I
3
EPA 625
10 Ng/I
FLUORANTHENE
BIS (2-CHLOROETHOXY)
<10
Ngll
<10
Ng/l
3
EPA 625
10 Ng/l
METHANE
BIS (2-CHLOROETHYL)-
<10
Ng/I
<10
Ng/l
3
EPA 625
10 pg/l
ETHER
BIS (2-CHLOROISO-
<10
Ng/I
<10
Ng/I
3
EPA 625
10 Ng/I
PROPYL)ETHER
BIS (2-ETHYLHEXYL)
<10
Ngll
<10
Ng/I
3
EPA 625
10 Ng/l
PHTHALATE
4-BROMOPHENYL
<10
Ng/I
<10
pgll
3
EPA 625
10 Ng/I
PHENYLETHER
BUTYL BENZYL
<10
Ng/I
<10
Ng/I
3
EPA 625
10 Ng/I
PHTHALATE
2-CHLORO-
<10
Ng/I
<10
Ng/I
3
EPA 625
10 Ng/l
NAPHTHALENE
4-CHLORPHENYL
<10
Ng/I
<10
Ng/I
3
EPA 625
10 pg/l
PHENYLETHER
CHRYSENE
<10
pg/I
<10
Ng/I
3
EPA 625
10 Ng/I
DI-N-BUTYL PHTHALATE
<10
Ng/I
<10
Ng/I
3
EPA 625
10 Ng/l
DI-N-OCTYL PHTHALATE
<10
pg/l
<10
Ng/I
3
EPA 625
10 Ng/I
DIBENZO(A,H)
<10
Ng/I
<10
pgll
3
EPA 625
10 pg/I
ANTHRACENE
1,2-DICHLOROBENZENE
<10
Ng/I
<10
Ng/I
3
EPA 625
10 Ng/I
1,3-DICHLOROBENZENE
<10
pg/l
<10
Ng/I
3
EPA 625
10 Ngll
1,4-DICHLOROBENZENE
<10
Ngll
<10
Ngll
3
EPA 625
10 Ng/I
3,3-DICHLORO-
<50
Ng/I
<50
Ng/I
3
EPA 625
50 Ng/I
BENZIDINE
DIETHYL PHTHALATE
<10
Ng/I
<10
Ng/I
3
EPA 625
10 Ng/I
DIMETHYL PHTHALATE
<10
Ng/l
<10
Ng/I
3
EPA 625
10 Ng/I
2,4-DINITROTOLUENE
<10
Ngll
<10
Ng/I
3
EPA 625
10 Ng/I
2,6-DINITROTOLUENE
<10
Ng/I
<10
Ng/I
3
EPA 625
10 Ng/I
1,2-DIPHENYL-
<10
Ng/I
<10
Ng/I
3
EPA 625
10 Ng/I
HYDRAZINE
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 13 of 22

FACILITY NAME AND PERMIT NUMBER:
City of Greensboro North Buffalo, NCO024325
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Cape Fear
Outfall number: 001 (Complete once for each outfall discharging effluent to waters of the United States.)
POLLUTANT
MAXIMUM DAILY DISCHARGE
AVERAGE DAILY DISCHARGE
ANALYTICAL
METHOD
ML/MDL
Conc.
Units
Mass
Units
Conc.
Units
Mass
Units
Number
of
Samples
FLUORANTHENE
<10
pg/I
<10
Ng/I
3
EPA 625
10 pg/l
FLUORENE
<10
pg/I
<10
pg/I
3
EPA 625
10 pg/I
HEXACHLOROBENZENE
<10
N9/1
<10
Ng/I
3
EPA 625
10 pg/I
HEXACHLORO-
BUTADIENE
<10
pgll
<10
vg/l
3
EPA 625
10 pg/I
HEXACHLOROCYCLO-
PENTADIENE
<50
Ng/I
<50
Ng/I
3
EPA 625
50 pg/l
HEXACHLOROETHANE
<10
Ng/I
<10
Ng/I
3
EPA 625
10 Ng/l
INDENO(1,2,3-CD)
PYRENE
<10
Ng/l
<10
pg/I
3
EPA 625
10 pg/l
ISOPHORONE
<10
pg/I
<10
pg/l
3
EPA 625
10 Ng/l
NAPHTHALENE
<10
Ng/I
<10
Ng/1
3
EPA 625
10 Ng/l
NITROBENZENE
<10
pg/I
<10
Ng/I
3
EPA 625
10 Ng/1
N-NITROSODI-N-
PROPYLAMINE
<10
Ng/I
<10
Ng/1
3
EPA 625
10 Ng/I
N-NITROSODI-
METHYLAMINE
<10
Ng/l
<10
Ng/l
3
EPA 625
10 Ng/l
N-NITROSODI-
PHENYLAMINE
<10
Ng/I
<10
pg/l
3
EPA 625
10 pg/I
PHENANTHRENE
<10
pg/I
<10
Ngll
3
EPA 625
10 Vg/I
PYRENE
<10
pg/I
<10
pg/I
3
EPA 625
10 Ng/I
1,2,4-
TRICHLOROBENZENE
<10
Ng/I
<10
Ngll
3
EPA 625
10 pg/l
Use this space (or a separate sheet) to provide information on other base -neutral compounds requested by the permit writer
Use this space (or a separate sheet) to provide information on other pollutants (e.g., pesticides) requested by the permit writer
ENi DD OF PA - T D.
- E ER TOT E APRLICATION OUER!/I,EW (PAGE ) TO DETERMINE WHICH OTHER PARTS
OF P@M 2/4 YM'U w9ff COMPLETE
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 14 of 22

FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED:
RIVER BASIN:
City of Greensboro North Buffalo, NCO024325 Renewal
Cape Fear
SUPPLEMENTAL APPLIGATION INFORMATION
PART E. TOXI'CITY TESTING DATA
POTWs meeting one or more of the following criteria must provide the results of whole effluent toxicity tests for acute or chronic toxicity for each of the
facility's discharge points: 1) POTWs with a design flow rate greater than or equal to 1.0 mgd; 2) POTWs with a pretreatment program (or those that are
required to have one under 40 CFR Part 403); or 3) POTWs required by the permitting authority to submit data for these parameters.
• At a minimum, these results must include quarterly testing for a 12-month period within the past 1 year using multiple species (minimum of two
species), or the results from four tests performed at least annually in the four and one-half years prior to the application, provided the results
show no appreciable toxicity, and testing for acute and/or chronic toxicity, depending on the range of receiving water dilution. Do not include
information on combined sewer overflows in this section. All information reported must be based on data collected through analysis conducted
using 40 CFR Part 136 methods. In addition, this data must comply with QA/QC requirements of 40 CFR Part 136 and other appropriate QA/QC
requirements for standard methods for analytes not addressed by 40 CFR Part 136.
• In addition, submit the results of any other whole effluent toxicity tests from the past four and one-half years. If a whole effluent toxicity test
conducted during the past four and one-half years revealed toxicity, provide any information on the cause of the toxicity or any results of a
toxicity reduction evaluation, if one was conducted.
• If you have already submitted any of the information requested in Part E, you need not submit it again. Rather, provide the information
requested in question EA for previously submitted information. If EPA methods were not used, report the reasons for using alternate methods.
If test summaries are available that contain all of the information requested below, they may be submitted in place of Part E.
If no biomonitoring data is required, do not complete Part E. Refer to the Application Overview for directions on which other sections of the form to
complete.
E.I. Required Tests.
Indicate the number of whole effluent toxicity tests conducted in the past four and one-half years. [5 Years-22 daphnia and 4 fat head minnow]
® chronic (26) ❑ acute [SEE ATTACHED WET TEST SUMMARY LABELED AS PART E ATTACHMENTS 1 & 2]
E.2. Individual Test Data. Complete the following chart for each whole effluent toxicity test conducted in the last four and one-half years. Allow one
column per test (where each species constitutes a test). Copy this page if more than three tests are being reported.
Test number: Test number: Test number:
a. Test information.
Test Species & test method number
Age at initiation of test
Outfall number
Dates sample collected
Date test started
Duration
b. Give toxicity test methods followed.
Manual title
Edition number and year of publication
Page number(s)
c. Give the sample collection method(s) used. For multiple grab samples, indicate the number of grab samples used.
24-Hour composite
Grab
d. Indicate where the sample was taken in relation to disinfection. (Check all that apply for each.
Before disinfection
After disinfection
After dechlorination
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 15 of 22

FACILITY NAME AND PERMIT NUMBER:
City of Greensboro North Buffalo, NCO024325
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Cape Fear
Test number: Test number: Test number:
e. Describe the point in the treatment process at which the sample was collected.
Sample was collected:
f. For each test, include whether the test was intended to assess chronic toxicity, acute toxicity, or both
Chronic toxicity
Acute toxicity
g. Provide the type of test performed.
Static
Static -renewal
Flow -through
h. Source of dilution water. If laboratory water, specify type; if receiving water, specify source.
Laboratory water
Receiving water
i. Type of dilution water. If salt water, specify "natural' or type of artificial sea salts or brine used.
Fresh water
Salt water
j. Give the percentage effluent used for all concentrations in the test series.
k. Parameters measured during the test. (State whether parameter meets test method specifications)
pH
Salinity
Temperature
Ammonia
Dissolved oxygen
I. Test Results.
Acute:
Percent survival in 100%
effluent
LC50
95% C.I.
%
%
%
Control percent survival
%
%
%
Other (describe)
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 16 of 22

FACILITY NAME AND PERMIT NUMBER:
City of Greensboro North Buffalo, NCO024325
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Cape Fear
Chronic:
NOEC
%
%
%
IC25
%
%
Control percent survival
%
%
%
Other (describe)
m. Quality Control/Quality Assurance.
Is reference toxicant data available?
Was reference toxicant test within
acceptable bounds?
What date was reference toxicant test
run (MM/DD/YYYY)?
Other (describe)
E.3. Toxicity Reduction Evaluation. Is the treatment works involved in a Toxicity Reduction Evaluation?
❑ Yes ® No If yes, describe:
EA. Summary of Submitted Biomonitoring Test Information. If you have submitted biomonitoring test information, or information regarding the
cause of toxicity, within the past four and one-half years, provide the dates the information was submitted to the permitting authority and a summary
of the results.
Date submitted: / / (MM/DD/YYYY)
Summary of results: (see instructions)
WET TEST SUMMARY IS INCLUDED AND LABELED PART E ATTACHMENTS 1 & 2. NPDES Permit NCO024325 requires quarterly
chronic WET analyses be conducted [on the final effluent after disinfection) in January. April July and October. The data is submitted
quarterly on the corresponding DMRs and also to the DWQ Environmental Sciences Branch as per NPDES permit requirement.
RE ER TO THEE APPLIC TION OYERVI�EW PAGE 1) TO DETERM NE WHIICH OTHER Pp► TS
OF RM FOA OU MUST COMPLETE.
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 17 of 22

FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED:
RIVER BASIN.
City of Greensboro North Buffalo, NCO024325 Renewal
Cape Fear
SUPP�LEMEN7'A�, APPLI�AiI�N INFQRMAT(�N
PART F. INDUSTRIAL USER DISCIHARGES ANQ RCRA/CERGLA V1MES
All treatment works receiving discharges from significant industrial users or which receive RCRA,CERCLA, or other remedial wastes must
complete part F.
GENERAL INFORMATION:
F.I. Pretreatment program. Does the treatment works have, or is subject to, an approved pretreatment program?
® Yes ❑ No
F.2. Number of Significant Industrial Users (SIUs) and Categorical Industrial Users (CIUs). Provide the number of each of the following types of
industrial users that discharge to the treatment works.
a. Number of non -categorical SIUs. 1
b. Number of CIUs. 4
SIGNIFICANT INDUSTRIAL USER INFORMATION:
Supply the following information for each SIU. If more than one SIU discharges to the treatment works, copy questions F.3 through F.8 and
provide the information requested for each SIU. SIU SUMMARY FORMS ARE INCLUDED AND LABELED PART F ATTACHMENTS 1-5
F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
Name:
Mailing Address:
F.4. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
F.5. Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s):
Raw material(s):
F.6. Flow Rate.
a. Process wastewater flow rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per
day (gpd) and whether the discharge is continuous or intermittent.
gpd ( continuous or intermittent)
b. Non -process wastewater flow rate. Indicate the average daily volume of non -process wastewater flow discharged into the collection system
in gallons per day (gpd) and whether the discharge is continuous or intermittent.
gpd ( continuous or intermittent)
F.7. Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits ❑ Yes ❑ No
b. Categorical pretreatment standards ❑ Yes ❑ No
If subject to categorical pretreatment standards, which category and subcategory?
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 18 of 22

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
City of Greensboro North Buffalo, NCO024325
Renewal
Cape Fear
F.8. Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e.g.,
upsets, interference) at the treatment works in the past three years?
❑ Yes ❑ No If yes, describe each episode.
RCRA HAZARDOUS WASTE RECEIVED BY TRUCK, RAIL, OR DEDICATED PIPELINE:
F.9. RCRA Waste. Does the treatment works receive or has it in the past three years received RCRA hazardous waste by truck, rail or dedicated pipe?
❑ Yes ® No (go to F.12)
F.10. Waste transport. Method by which RCRA waste is received (check all that apply):
❑ Truck ❑ Rail ❑ Dedicated Pipe
F.11. Waste Description. Give EPA hazardous waste number and amount (volume or mass, specify units).
EPA Hazardous Waste Number Amount Units
CERCLA (SUPERFUND) WASTEWATER, RCRA REMEDIATION/CORRECTIVE ACTION
WASTEWATER, AND OTHER REMEDIAL ACTIVITY WASTEWATER:
F.12. Remediation Waste. Does the treatment works currently (or has it been notified that it will) receive waste from remedial activities?
❑ Yes (complete F.13 through F.15.) ® No [None from CERCLA or RCRA or none that meets the definition of a SIU]
F.13. Waste Origin. Describe the site and type of facility at which the CERCLA/RCRA/or other remedial waste originates (or is excepted to origniate in
the next five years).
F.14. Pollutants. List the hazardous constituents that are received (or are expected to be received). Include data on volume and concentration, if
known. (Attach additional sheets if necessary.)
F.15. Waste Treatment.
a. Is this waste treated (or will be treated) prior to entering the treatment works?
❑ Yes ❑ No
If yes, describe the treatment (provide information about the removal efficiency):
b. Is the discharge (or will the discharge be) continuous or intermittent?
❑ Continuous ❑ Intermittent If intermittent, describe discharge schedule.
E{ViD OF PART F.
R+EF'R TO THE APP�ICATI©N ©\/ERVIEIIV (PACE 1) TO DETERMiO,NE 1�VH'I�H �TH�E�R PARTS
O'F FORM 2A lrO�lJ IdIIUST C©Mi'P�ETE
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 19 of 22

FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED:
RIVER BASIN:
City of Greensboro North Buffalo, NCO024325 Renewal
Cape Fear
Sl7pP��MFNTi4�. �PPLIC�,ii©N INF�R�NB�TION
PART O. COMBINED SEWER SYSTEMS
If the treatment works has a combined sewer system, complete Part G. NOT APPLICABLE
G.1. System Map. Provide a map indicating the following: (may be included with Basic Application Information)
a. All CSO discharge points.
b. Sensitive use areas potentially affected by CSOs (e.g., beaches, drinking water supplies, shellfish beds, sensitive aquatic ecosystems, and
outstanding natural resource waters).
C. Waters that support threatened and endangered species potentially affected by CSOs.
G.2. System Diagram. Provide a diagram, either in the map provided in G.1 or on a separate drawing, of the combined sewer collection system that
includes the following information.
a. Location of major sewer trunk lines, both combined and separate sanitary.
b. Locations of points where separate sanitary sewers feed into the combined sewer system.
C. Locations of in -line and off-line storage structures.
d. Locations of flow -regulating devices.
e. Locations of pump stations.
CSO OUTFALLS:
Complete questions G.3 through G.6 once for each CSO discharge point.
G.3. Description of Outfall.
a. Outfall number
b. Location
(City or town, if applicable) (Zip Code)
(County) (State)
(Latitude) (Longitude)
C. Distance from shore (if applicable) ft.
d. Depth below surface (if applicable) ft.
e. Which of the following were monitored during the last year for this CSO?
❑ Rainfall ❑ CSO pollutant concentrations ❑ CSO frequency
❑ CSO flow volume ❑ Receiving water quality
f. How many storm events were monitored during the last year?
GA. CSO Events.
a. Give the number of CSO events in the last year.
events (❑ actual or ❑ approx.)
b. Give the average duration per CSO event.
hours (❑ actual or ❑ approx.)
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 20 of 22

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
City of Greensboro North Buffalo, NCO024325
Renewal
Cape Fear
C. Give the average volume per CSO event.
million gallons (❑ actual or ❑ approx.)
d. Give the minimum rainfall that caused a CSO event in the last year
Inches of rainfall
G.5. Description of Receiving Waters.
a. Name of receiving water:
b. Name of watershed/river/stream system:
United State Soil Conservation Service 14-digit watershed code (if known):
C. Name of State Management/River Basin:
United States Geological Survey 8-digit hydrologic cataloging unit code (if known):
G.6. CSO Operations.
Describe any known water quality impacts on the receiving water caused by this CSO (e.g., permanent or intermittent beach closings, permanent or
intermittent shell fish bed closings, fish kills, fish advisories, other recreational loss, or violation of any applicable State water quality standard).
END OF PART G.
REFER TO THE APPLICATION OiiER!/IE1N (PAGE 1) TO DETIERM,IN'E WHICH OTHER PARTS
OF FORIV0 2A OU MIDST COIVI'R. 7
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 21 of 22

Additional information, if provided, will appear on the following pages.
NPDES FORM 2A Additional Information

NPDES PERMIT APPLICATION PART E ATTACHMENT 1
NORTH BUFFALO POTW [NC0024325] WHOLE EFFLUENT TOXICITY RESULTS SUMMARY [BIOASSAY TEST]
SAMPLE
FEMALE DAPHNIA ORGANISMS
AVGI
Reproduction
DATES
SAMPLE
#1
#2
#3
#4
#5
#6
#7
#8
#9
#10
#11
#12
FEM
Mortality
%Mortality
RESULT
%Reduction
LAB
COMMENTS
1118 & 1123 2006
Control
19
15
18
17
20
17
20
21
22
20
18.9
0/10
0%
Meritech
EPA Multiple
22.5% Eff
20
20
22
20
21
20
22
20
16
18
19.9
0/10
0%
-5.29
Dilution Series
45%Eff
22
19
18
20
22
22
18
20
23
17
20.1
0/10
0%
-6.35
Phase II Chronic
75%Eff
20
18
21
20
21
20
18
18
18
20
19.4
0/10
0%
-2.65
Ceriodaphnia
90%Eff
22
18
22
20
23
21
17
20
21
18
20.2
0/10
0%
PASS
-6.88
100%Eff
21
21
20
22
21
16
22
20
18
22
20.3
0/10
0%
-7.41
CV=>100%
41198841242006
Control
20
19
23
25
20
22
25
20
23
23
22
0/10
0%
Meritech
EPA Multiple
22.5% Eff
16
21
24
25
23
26
24
20
24
23
22.6
0/10
0%
-2.73
Dilution Series
45%Eff
24
21
27
25
24
22
26
23
26
14
23.2
0/10
0%
-SAS
Phase II Chronic
75% Eff
28
22
24
21
24
24
21
24
23
26
23.7
0/10
0%
-7.73
Ceriodaphnia
90%Eff
21
21
20
25
21
26
22
21
26
25
22.8
0/10
0%
PASS
-3.64
100%Eff
19
23
23
26
18
23
24
25
26
26
23.3
0/10
0%
-5.91
CV=>100%
7119 & 7124 2006
Control
26
25
25
27
23
23
22
22
16
12
22.1
0/10
0%
Meritech
EPA Multiple
22.5% Eff
21
23
20
23
27
31
26
28
28
25
25.2
0/10
0%
-14.03
Dilution Series
45%Eff
19
30
22
33
32
27
31
31
28
18
27.1
0/10
0%
-22.62
Phasell Chronic
75% Eff
29
32
30
26
27
23
21
29
26
27
27
0/10
0%
-22.17
Ceriodaphnia
90%Eff
29
30
29
28
28
25
29
28
30
31
28.7
0/10
0%
PASS
-29.86
100%Eff
24
27
28
25
27
30
27
27
30
28
27.3
0/10
0%
-23.53
CV=>100%
10118 & 10123 2005
Control
27
23
23
28
28
27
20
25
26
25
25.2
0/10
0%
Meritech
EPA Multiple
22.5% Eff
27
29
29
1 28
28
29
29
32
28
30
28.9
0/10
0%
-14.68
Reproduction
Dilution Series
45%Eff
25
27
26
33
33
29
26
27
27
26
27.9
0/10
0%
-10.71
10/23
NOEC=>100%
Phase II Chronic
75% Eff
29
27
30
31
29
33
27
28
31
31
29.6
0/10
0%
-17.46
Sample
Mortality
Ceriodaphnia
90%Eff
25
28
34
30
32
28
27
25
30
24
28.3
0/10
0%
PASS
-12.30
Cl2=0.32
NOEC=90%
100%Eff
WSZRR.
5F,32
0022;t
W311%
IK247k'
530V
W2 0
WW32=a
5+s',28-9
Z6;q
28.3
10/10
100%
-12.30
mg/I
CV = 94.9%
1117 & 1122 2007
Control
21
21
20
24
20
22
23
22
13
22
20.8
0/10
0%
Meritech
EPA Multiple
22.5% Eff
20
22
23
21
22
11
24
21
24
19
20.7
0/10
0%
0.48
Dilution Series
45%Eff
19
20
6
23
23
10
24
22
21
17
18.5
0/10
0%
11.06
Phase II Chronic
75% Eff
26
1 22
1 18
24
21
17
25
24
20
23
22
0/10
0%
-5.77
Ceriodaphnia
90%Eff
25
28
17
22
21
24
23
1 22
20
24
22.6
0/10
0%
PASS
-8.65
100%Eff
21
23
22
16
13
MIA
24
22
W10k
22
19.22
1/10
10%
7.59
CV=>100%
4118 8, 4123 2007
Control
23
20
23
22
18
20
21
20
22
22
21.1
0/10
0%
Tritest
EPA Multiple
22.5% Eff
23
21
22
23
21
19
22
22
22
20
21.5
0/10
0%
-1.90
Dilution Series
45%Eff
24
19
20
22
21
24
18
20
23
22
21.3
0/10
0%
-0.95
Phase II Chronic
75% Eff
23
22
23
22
23
17
20
19
22
23
21.4
0/10
0%
-1.42
Ceriodaphnia
90%Eff
23
22
22
22
20
19
21
20
21
23
21.3
0/10
0%
PASS
-0.95
100%Eff
22
24
22
22
20
19
23
18
22
22
21.4
0/10
0%
-1.42
CV=>100%
7118 & 7123 2007
Control
25
25
22
18
24
24
26
26
28
25
24.3
0/10
0%
Tritest
EPA Multiple
22.5%Eff
28
22
30
30
28
25
28
26
26
26
26.9
0/10
0%
-10.70
Dilution Series
45%Eff
30
27
28
26
26
25
30
30
31
25
27.8
0/10
0%
-14.40
Phase II Chronic
75% Eff
28
28
27
31
24
28
28
31
24
30
27.9
0/10
0%
-14.81
Ceriodaphnia
90%Eff
28
30
29
31
26
28
29
26
28
26
28.1
0/10
0%
PASS
-15.64
100%Eff
24
26
24
23
25
26
24
22
24
26
24.4
0/10
0%
-0.41
CV=>100%

NPDES PERMIT APPLICATION PART E ATTACHMENT 1
NORTH BUFFALO POTW [NC00243251 WHOLE EFFLUENT TOXICITY RESULTS SUMMARY [BIOASSAY TEST]
SAMPLE
DATES
SAMPLE
#1
#2
#3
FEMALE
#4
#5
DAPHNIA
#6
ORGANISMS
#7
#8 1
#9
#10
#11
#12
AVGI
FEM
Mortality
%Mortality
RESULT
Reproduction
% Reduction7LABCOMMENTS
10124 & 10129 2007
Control
21 1
20 1
21
22
20
27
22 1
22 1
23
23
22.1
0/10
0%
Tritest
EPA Multiple
Dilution Series
22.5%Eff
45%Eff
24
25
2321
25
22
22
24
24
22
27
28
26
28
19
23
25
22
26
22
23.7
24.1
0/10
0/10
0%
0%
-7.24
-9.05
Phase II Chronic
75% Eff
24
25
24
22 1
23
27
24 1
25 1
21
25
24
0/10
0%
-8.60
Ceriodaphnia
90% Eff
100% Eff
24
20
21
16
21
19
25
17
25
25
20
24
17 1
26
20 1
23
16
25
15
23.9
17.8
0/10
0/10
0%
0%
PASS
-8.14
19.46
CV=>100%
H8
1/23 81/28 2008
Control
23
27
21
23
24
19
22
16
21
22
21.8
0/10
0%
Tritest
EPA Multiple
Dilution Series
22.5%Eff
45%Eff
27
414L
27
i4S133Y
21
''F�11�
19
64r24fli�'S111U�
27
20
i> .16�
20 1
i�19X;
W4yJ
r` :%.1J0
17 1
21 'd$12�
18
12
i>,s11:�
20.8
15.2
0/10
9/10
0%
90%
4.59
30.28
Phase II Chronic
75% Eff
Wi 611
4V4�
W3$
PTSM
"IV
WOR
1iD' "
�.,_6-
,'Di'lq
word
i�0�e
. 3a'.,T➢
wGIN
W2'�
��2aJ
!�4'.`De`96
3.1
1.4
10/SO
10/10
100%
100%
FAIL
85.78
93.58
Ceriodaphnia
90% Eff
0
> O$
4'
11�9iil
� 20
0
10/10
10051.
100.00
CV = 31.82%
100%Eff
'WOW
MIN
MOLD
MOM
WG, IN
WON
Zo-12
2127 & 313 2008
Control
24
12
25
23
23
23
27
34
22
23
23.6
0/10
0%
Tritest
EPA Multiple
Dilution Series
Phase II Chronic
22.5%Eff
45%Eff
75% Eff
19
22
25
22
27
21
25
21
22
27
16
20
22
19
31
28
30
19
27
25
24
27
20
29
26
16
17
25
19
29
24.8
21.5
23.7
0/10
0/10
0/10
0%
0%
0%
-5.08
8.90
-0.42
Re -run for Jan Fail
Ceriodaphnia
90% Eff
100% Eff
17
13
9
15
24
22
20
21
27
18
16
22
22
26
26
16
20
17
18
14
19.9
18.4
0/10
0/10
0%
0%
PASS
15.68
22.03
CV=94.87%
3125 & 3130 2008
Control
19
24
11
15
26
16
26
22
15
22
19.6
0/10
0%
Tritest
EPA Multiple
Dilution Series
Phase 11 Chronic
22.5% Eff
45%Eff
75% Eff
21
11
21
21
16
18
14
16
1 16
MIA
19
10
18
18
20
20
15
19
23
19
15
16
20
9
9
22
26
22
20
13
18.22
17.6
16.7
0/10
0/10
0/10
0%
0%
0%
7.03
30.20
14.80
Re -run for Jan Fail
Ceriodaphnia
90%-Eff
100% Eff
12
14
14
9
21
16
10
13
13
14
13
7
14
11
13
13
26
21
21
23
15.7
14.1
0/10
0/10
0%
0%
PASS
19.90
28.06
CV = 94.87
4116 & 4121 2008
Control
23
31
28
24
30
26
27
31
27
24
27.1
0/10
0%
Tritest
EPA Multiple
Dilution Series
Phase II Chronic
Ceriodaphnia
22.5%Eff
45%Eff
75% Eff
90% Eff
100%Eff
24
24
26
29
22
27
24
2S
20
20
23
29
26
25
23
31
25
27
18
MIA
2B
23
16
4
24
26
32
18
30
31
25
33
25
26
25
22
17
21
20
3
24
15
MIA
15
22.8
23.8
24.4
23.78
22.11
0/10
0/10
0/10
0/10
0/10
0%
0%
0%
0%
0%
PASS
15.87
12.18
9.96
12.26
18.41
CV=>100%
7123 & 7128 2008
EPA Multiple
Dilution Series
Phase 11 Chronic
Control
22.5%Eff
45%Eff
75% Eff
22
26
27
25
24
17
male
25
21
20
26
24
28
24
32
27
283201
r22
33
26
20
23
19
26
21
20
25
30
25
26
24
24.8
25.33
24.5
0/10
0/30
0/10
0/10
0%
0%
0%
0%
33
-3.56
-5.56
-2.06
0.00
Tritest
Ceriodaphnia
90% Eff
100% Eff
23
21
19
19
25
23
27
24
24
22
22
24
23
16
28
24
25
26
24
22.3
0/10
0/10
0%
0%
PASS
7.08
CV 100%
10129 &10/31 2008
EPA Multiple
Dilution Series
Phase II Chronic
Geriodaphnia
Control
22.5%Eff
45%Eff
75% Eff
90% Eff
100% Eff
15
27
17
15
16
26
20
26
15
14
12
22
21
24
26
14
23
28
22
27
27
28
25
27
25
26
25
28
13
27
24
27
27
15
18
26
18
23
26
24
14
25
23
26
27
15
27
27
24
26
28
24
23
25
SS
20
27
12
27
19
21
25.2
24.5
18.9
19.8
25.2
0/10
0/10
0/10
0/10
0/10
0/10
0%
0%
0%
0%
0%
0%
PASS
-20.00
-16.67
10.00
5.71
20.0
-20.00
IMeitech
Passed Fathead
Minnow test also
CV=>100%
CV=>700%
➢
11218. 11262009
Control
22.5%Eff
45% Eff
75% Eff
90% Eff
100% Eff
26
25
20
23
23
21
29
25
24
25
23
27
24
28
20
27
25
25
27
24
25
28
20
23
28
27
27
28
22
26
29
30
25
27
27
26
28
27
23
27
24
25
16
27
28
25
27
24
24
2B
26
27
27
24
27
24
28
26
23
28
25.8
26.5
24.6
26.3
24.1
24.9
0/10
0/10
0/10
0/10
0/10
0/10
0%
0%
0%
0%
0%
0%
PASS
-2.71
4.65
-1.94
59
3.49
3.49
itech
CV=>100%
EPA Multiple
Dilution Series
Phase 11 Chronic
Ceriodaphnia

NPDES PERMIT APPLICATION PART E ATTACHMENT 1
NORTH BUFFALO POTW [NC0024325] WHOLE EFFLUENT TOXICITY RESULTS SUMMARY [BIOASSAY TEST]
SAMPLE
FEMALE DAPHNIA ORGANISMS
AVGI
I
Reproduction
DATES
SAMPLE
#1
#2
#3
#4
#5
#6
#7
#8
#9
#10
#11
#12
FEM
Mortality
%Mortality
RESULT
% Reduction
LAB
COMMENTS
4122 & 4127 2009
Control
22
29
31
22
25
27
30
28
19
27
26
0/10
0%
Meritech
EPA Multiple
22.5%Eff
23
30
22
12
30
23
22
25
27
26
24
0/10
0%
7.69
Dilution Series
45% Eff
24
26
26
24
31
29
24
27
25
29
26.5
0/10
0%
-1.92
Phase It Chronic
75% Eff
21
25
27
28
27
21
24
19
31
30
25.3
0/10
0%
2.69
Ceriodaphnia
90%Eff
100%Eff
26
22
25
28
30
25
23
25
27
27
24
25
28
32 1
24
30
25
24
29
24
26.1
26.2
0/10
0/10
0% 1
0% 1
PASS
-0.38
-0.77
CV =>100%
7129 & 7131 2009
Control
29
30
24
28
24
28
30
28
30
23
27.4
0/10
0%
Meritech
EPA Multiple
22.5%Eff
28
31
27
31
25
20
27
24
27
28
26.8
0/10
0%
2.19
Passed Fathead
Dilution Series
45%Eff
28
29
30
26
25
28
28
24
29
19
26.6
0/10
0%
2.92
Minnow test also
Phase 11 Chronic
75% Eff
29
30
23
30
20
36
27
26
26
29
27.6
0/10
0%
-0.73
CV=>100%
Ceriodaphnia
907.Eff
100%Eff
30
27
32
27
29
18
25
24
23
20
27
29
26
27
28
27
24
27
27
25
27.1
25.1
0/10
0/10
0%
0%
PASS
1.09
8.39
CV=>100%
10128 & 1112 2009
Control
19
23 1
20
20
22
17
21
21
21
16
20
0/10
0%
Meritech
EPA Multiple
22.5%Eff
17
25
20
21
19
22
23
20
20
22
20.9
0/10
0%
-4.50
Dilution Series
45%Eff
22
18
13
21
25
21
15
18
19
18
19
0/30
0%
5.00
Phase 11 Chronic
75% Eff
27
24
22
17
21
23
16
19
8
��'. 5:f
18.2
1/10
10%
9.00
Ceriodaphnia
90%Eff
100%Eff
24
26
25
29
26
29
24
24
29
20
26
29
24
27
24
30
23
26
23
25
24.8
26.5
0/10
0/10
0%
0%
PASS
-24.00
-32.50
CV=>100%
1127 & 1129 2010
Control
21
23
10
21
18
22
19
18
19
16
18.7
0/10
0%
Meritech
EPA Multiple
22.5%Eff
26
24
25
22
26
22
26
25
27
19
24.2
0/10
0%
-29.41
Passed Fathead
Dilution Series
45%Eff
23
18
24
20
19
23
25
28
25
23
22.8
0/10
0%
-21.93
Minnow test also
Phase 11 Chronic
75%Eff
25
20
22
25
21
18
27
16
23
24
22.1
0/10
0%
-18.18
CV=>100%
Ceriodaphnia
90%Eff
100%Eff
20
27
27
25
22
22
13
25
31
30
30
28
25
30
24
27
22
32
25
30
23.9
27.6
0/10
0/10
0%
0%
PASS
-27.81
-47.59
CV=>100%
4127 & 4130 2010
Control
21
24
28
23
24
21
25
22
24
23
23.5
0/10
0%
Meritech
EPA Multiple
22.5% Eff
19
25
22
24
19
26
9
24
13
18
19.9
0/10
0%
15.32
Passed Fathead
Dilution Series
45%Eff
29
30
27
23
25
25
29
22
19
23
25.2
0/10
0%
-7.23
Minnow test also
Phase II Chronic
75% EffV41
21
27
25
23
23
26
17
28
21.8
0/10
0%
7.23
CV=>100Ceriodaphnia
90%Eff
100%Eff
26
27
26
29
26
21
26
25
20
28
25
26
25
27
28
25
25A
26.2
0/10
0/10
0%
0%
PASS
-8.09
-11.49
CV =>100%
7128 & 812 2010
Control
24
28
26
22
24
28
19
25
24.7
0/10
0%
Meritech
EPA Multiple
22.5% Eff
26
23
28
27
27
25
26
28
25.6
0/100%
-3.64
Dilution Series
45%Eff
30
27
30
25
24
28
24
28
26.5
0/10
0%
-7.29
Phase II Chronic
75% Eff
28
22
25
23
19
28
24
25
24.3
0/10
0%
1.62
Ceriodaphnia
90%Eff
100°/a Eff
21
22
22
22
21
19
16
24
17
18
21
25
20
20
24
22
20.3
20.9
0/10
0/10
0%
0%
17.81
15.38
CV =>100 %
10127 & 1111 2010
Control
23
26
o'�s't4,19
25
26
24
27
26
22.9
1/10
10%
Meritech
EPA Multiple
22.5%Eff
31
26
23
25
22
28
25
29
29
27
26.5
0/10
0%
-15.72
Dilution Series
45%Eff
27
21
24
22
22
23
25
23
24
27
23.8
0/10
0%
-3.93
Phase II Chronic
75% Eff
22
23
27
23
27
28
17
25
28
24
24.4
0/10
0%
-6.55
Ceriodaphnia
90%Eff
100%Eff
25
24
22
24
23
25
26
25
28
26
7
26
27
30
29
28
24
26
26
24
23.7
25.8
0/10
0%
PASS
-3.49
-12.66
CV=>700%

NPDES PERMIT APPLICATION PART E ATTACHMENT 2
NORTH
BUFFALO
POTW NCO024325
SECOND SPECIES
BIOASSAY [Fathead Minnow]
Oct 28/29131, 2008
Repl.
1
2
3
4
Control
Surviving #
10
10
10
10
% Survival
100
Results
Original #
10
10
10
10
Survival
Growth
Wgt/original (mg)
0.666
0.529
0.519
0.596
Avg Wgt (mg)
0.578
NOEC
100
100
LOEC
>100
>100
22.5% Eff
Surviving #
10
10
10
10
% Survival
100
ChV
>100
>100
Original#
10
10
10
10
WgUoriginal (mg)
0.531
0.512
0.507
0.49
Avg Wgt (mg)
0.510
Overall
ChV
>100
45% Eff
Surviving #
10
10
10
10
% Survival
100
Original #
10
10
10
10
Wgt/original (mg)
0.558
0.54
0.518
0.572
Avg Wgt (mg)
0.547
75% Eff
Surviving #
10
10
10
10
% Survival
100
Original#
10
10
10
10
Wgtoriginal (mg)
0.564
0.621
0.554
0.547
Avg Wgt (mg)
0.572
90% Eff
Surviving #
10
10
10
10
% Survival
100
Original #
10
10
10
10
Wgtoriginal (mg)
0.453
0.558
0.587
0.455
Avg Wgt (mg)
0.513
100% Eff
Surviving #
10
10
9
10
% Survival
97.5
Original#
10
10
10
10
Wgtoriginal (mg)
0.566
0.546
0.485
0.524
Avg Wgt (mg)
0.530
July 28/29/31
2009
Repl.
1
2
3
4
Control
Surviving #
10
10
10
10
% Survival
100
Results
Original #
10
10
10
10
Survival
Growth
WgUoriginal (mg)
0.713
0.798
0.715
0.763
Avg Wgt (mg)
0.747
NOEC
100
100
LOEC
>100
>100
22.5% Eff
Surviving #
10
10
8
10
% Survival
95
ChV
>100
>100
Original #
10
10
10
10
WgUoriginal (mg)
0.716
0.648
0.562
0.71
Avg Wgt (mg)
0.659
Overall
ChV
>100
45% Eff
Surviving #
9
10
9
10
% Survival
95
Original #
10
10
10
10
WgUoriginal (mg)
0.669
0.763
0.752
0.789
Avg Wgt (mg)
0.743
75% Eff
Surviving #
9
10
9
10
% Survival
95
Original #
10
10
10
10
WgUoriginal (mg)
0.741
0.658
0.785
0.702
Avg Wgt (mg)
0.722
90% Eff
Surviving #
10
10
10
10
% Survival
100
Original#
10
10
10
10
WgUoriginal (mg)
0.705
0.778
0.77
0.801
Avg Wgt (mg)
0.764
100% Eff
Surviving #
10
10
9
10
% Survival
97.5
Original #
10
10
10
10
WgUoriginal (mg)
0.702
0.814
0.773
0.729
Avg Wgt (mg)
0.755

NPDES PERMIT APPLICATION PART E ATTACHMENT 2
NORTH BUFFALO
POTW NCO024325
SECOND SPECIES
BIOASSAY [Fathead Minnow]
January 26/27/29, 2010
Repl.
1
2
3
4
Control
Surviving #
10
10
10
10
% Survival
100
Results
Original#
10
10
10
10
Survival
Growth
WgUoriginal (mg)
0.736
0.739
0.674
0.734
Avg Wgt (mg)
0.721
NOEC
100
100
LOEC
>100
>100
22.5% Eff
Surviving #
10
10
10
10
% Survival
100
ChV
>100
>100
Original #
10
10
10
10
WgUoriginal (mg)
0.642
0.696
0.746
0.706
Avg Wgt (mg)
0.698
Overall
ChV
>100
45% Eff
Surviving #
9
10
10
10
% Survival
97.5
Original #
10
10
10
10
WgUoriginal (mg)
0.589
0.718
0.674
0.547
Avg Wgt (mg)
0.632
75% Eff
Surviving #
10
10
10
10
% Survival
100
Original#
10
10
10
10
WgUoriginal (mg)
0.704
0.476
0.639
0.637
Avg Wgt (mg)
0.614
90% Eff
Surviving #
10
10
10
10
% Survival
100
Original #
10
10
10
10
WgUoriginal (mg)
0.627
0.71
0.619
0.68
Avg Wgt (mg)
0.659
100% Eff
Surviving #
9
10
10
10
% Survival
97.5
Original #
10
10
10
10
Wgt/original (mg)
0.729
0.676
0.752
0.674
Avg Wgt (mg)
0.708
Apr 27128/30, 2010
Repl.
1
2
3
4
Control
Surviving #
10
10
10
10
% Survival
100
Results
Original #
10
10
10
10
Survival
Growth
WgUoriginal (mg)
0.509
0.518
0.614
0.574
Avg Wgt (mg)
0.554
NOEC
100
100
LOEC
>100
>100
22.5% Eff
Surviving #
8
10
9
10
% Survival
92.5
ChV
>100
>100
Original #
10
10
10
10
Wgtoriginal (mg)
0.523
0.497
0.560
0.539
Avg Wgt (mg)
0.530
Overall
ChV
>100
45% Eff
Surviving #
10
9
10
8
% Survival
92.5
Original #
10
10
10
10
Wgt/original (mg)
0.565
0.551
0.633
0.452
Avg Wgt (mg)
0.550
75% Eff
Surviving #
10
10
10
10
% Survival
100
Original #
10
10
10
10
Wgt/original (mg)
0.577
0.497
0.536
0.549
Avg Wgt (mg)
0.540
90% Eff
Surviving #
10
10
9
10
% Survival
97.5
Original#
10
10
10
10
WgUoriginal (mg)
0.553
0.642
0.558
0.667
Avg Wgt (mg)
0.605
100% Eff
Surviving #
10
10
10
10
% Survival
100
Original #
10
10
10
10
WgUoriginal (mg)
1 0.534
0.637
0.672
0.626
i Avg Wgt (mg)
0.617

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
City of Greensboro North Buffalo, NCO024325
Renewal
Cape Fear
PART F ATTACHMENT 1
F.3.
Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works.
Submit additional pages as necessary.
Name: Greensboro Industrial Platers 01
Mailing Address: 725 Kenilworth Street
Greensboro NC 27403
FA.
Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
Cleaning, rinse nickel plating, electroless nickel
F.S.
Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or
contribute to the SIU's discharge.
Principal product(s): Service Indust — Job Shop Electro later
Raw material(s): alkaline cleaner, degreaser, nickel hydrochloric acid nitric acid
F.6.
Flow Rate.
a. Process wastewater flow rate. Indicate the average daily volume of process wastewater discharge into the collection
system in gallons per day (gpd) and whether the discharge is continuous or intermittent.
2926 gpd (X continuous or intermittent)
b. Non -process wastewater flow rate. Indicate the average daily volume of non -process wastewater flow discharged into
the collection system in gallons per day (gpd) and whether the discharge is continuous or intermittent.
gpd ( continuous or intermittent)
F.7.
Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits R Yes ❑ No
b. Categorical pretreatment standards R Yes ❑ No
If subject to categorical pretreatment standards, which category and subcategory?
Electroplating 40 CFR Part 413 Subpart A (413.14) and Subpart G (413.74) — Job Shop Discharging Less than 10,000 GPD
F.B.
Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed
to any problems (e.g., upsets, interference) at the treatment works in the past three years?
❑ Yes ® No If yes, describe each episode.

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
City of Greensboro North Buffalo, NCO024325
Renewal
Cape Fear
PART F ATTACHMENT 2
F.3.
Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works.
Submit additional pages as necessary.
Name: Triad Anodizing and Plating Company, Inc.
Mailing Address: 3502 Spring Garden Street
Greensboro NC 27407
FA.
Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
Zinc Plating, anodize bath chromate bath dichromate bath dyeing and chemical filming
F.5.
Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or
contribute to the SIU's discharge.
Principal product(s): Job Shop Electro later
Raw material(s): ' zinc chloride, potassium chloride, boric acid, hydrochloric acid, sulfuric acid alkaline cleaners,
caustic soda etch nitric acid nickel acetate seal dyes, chromate deox
F.6.
Flow Rate.
a. Process wastewater flow rate. Indicate the average daily volume of process wastewater discharge into the collection
system in gallons per day (gpd) and whether the discharge is continuous or intermittent.
3110 gpd (X continuous or intermittent)
b. Non -process wastewater flow rate. Indicate the average daily volume of non -process wastewater flow discharged into
the collection system in gallons per day (gpd) and whether the discharge is continuous or intermittent.
gpd ( continuous or intermittent)
F.7.
Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits ® Yes ❑ No
b. Categorical pretreatment standards ® Yes ❑ No
If subject to categorical pretreatment standards, which category and subcategory?
Electroplating 40 CFR Part 413 Subpart A 413.14 and Subpart D 413.44 Job Shop Dischar-ging Less than 10,000 GPD
F.S.
Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to
any problems (e.g., upsets, interference) at the treatment works in the past three years?
❑ Yes ® No If yes, describe each episode.
9
J

A
FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
City of Greensboro North Buffalo, NCO024325
Renewal
Cage Fear
PART F ATTACHMENT 3
F.3.
Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works.
Submit additional pages as necessary.
Name: Guilford Plating Company
Mailing Address: 3318 Church Street Ext.
Greensboro NC 27405
FA.
Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
Copper bath zinc bath nickel bath chrome bath cleaning, arts rinse
F.5.
Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or
contribute to the SIU's discharge.
Principal product(s): Job Shop Electro later
Raw material(s): copper, zinc, nickel sulfate, boric acid, brighteners, purifier, sulfuric acid, alkaline cleaner and
chrome
F.6.
Flow Rate.
a. Process wastewater flow rate. Indicate the average daily volume of process wastewater discharge into the collection
system in gallons per day (gpd) and whether the discharge is continuous or intermittent.
126 gpd ( continuous or X intermittent)
b. Non -process wastewater flow rate. Indicate the average daily volume of non -process wastewater flow discharged into
the collection system in gallons per day (gpd) and whether the discharge is continuous or intermittent.
gpd ( continuous or intermittent)
F.7.
Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits R Yes ❑ No
b. Categorical pretreatment standards R Yes ❑ No
If subject to categorical pretreatment standards, which category and subcategory?
Electroplating 40 CFR Part 413 Subpart A (413.14) — Job Shop Discharging Less Than 10,000 GPD
F.8.
Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to
any problems (e.g., upsets, interference) at the treatment works in the past three years?
❑ Yes R No If yes, describe each episode.

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
City of Greensboro Borth Buffalo, NCO024325
Renewal
Cape Fear
PART F ATTACHMENT 4
F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional
pages as necessary.
Name: Lorillard Tobacco Co.
Mailing Address: 2525 East Market Street
Greensboro, NC 27401
F.4. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
Casino Menthol Preparation Cigarette Manufacturing, Drying, Mix kitchen
F.S. Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s): Cigarettes
Raw material(s): Tobacco, flavorings, menthol, paste
F.6. Flow Rate.
a. Process wastewater flow rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per
day (gpd) and whether the discharge is continuous or intermittent.
210,309 gpd (X continuous or intermittent)
b. Non -process wastewater flow rate. Indicate the average daily volume of non -process wastewater flow discharged into the collection
system in gallons per day (gpd) and whether the discharge is continuous or intermittent.
gpd ( continuous or intermittent)
F.7. Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits ® Yes ❑ No
b. Categorical pretreatment standards ❑ Yes ® No
If subject to categorical pretreatment standards, which category and subcategory?
F.B. Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e.g.,
upsets, interference) at the treatment works in the past three years?
❑ Yes ® No If yes, describe each episode.
tt'

" •.
FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
City of Greensboro North Buffalo, NCO024325
Renewal
Cape Fear
PART F ATTACHMENT 5
F.3.
Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works.
Submit additional pages as necessary.
Name: Pugh Metal Finishing
Mailing Address: 802 West Lee Street
Greensboro NC 27403
FA.
Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
Zinc plating, cadmium plating, nickel plating, black oxide bath and rinses
F.S.
Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or
contribute to the SIU's discharge.
Principal product(s): Job Shop Electroplater
Raw material(s): Alkaline cleaner, chromic acid, zinc, nickel, copper, cyanide sodium, sodium hydroxide, mudatic
acid brightener, black oxide
F.6.
Flow Rate.
C. Process wastewater flow rate. Indicate the average daily volume of process wastewater discharge into the collection
system in gallons per day (gpd) and whether the discharge is continuous or intermittent.
3491 gpd (X continuous or intermittent)
d. Non -process wastewater flow rate. Indicate the average daily volume of non -process wastewater flow discharged into
the collection system in gallons per day (gpd) and whether the discharge is continuous or intermittent.
gpd ( continuous or intermittent)
F.7.
Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits ® Yes ❑ No
b. Categorical pretreatment standards ® Yes ❑ No
If subject to categorical pretreatment standards, which category and subcategory?
Electroplating 40 CFR Part 413 Subpart A 413.14 — Job Shop Discharging Less Than 10,000 GPD
F.8.
Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to
any problems (e.g., upsets, interference) at the treatment works in the past three years?
❑ Yes ® No If yes, describe each episode.

�gUFF NLO�
ARY SETTLING
/ ANKS
NO.4
i�
/ GRIT CHAMBERS
' SCRE IN N0.3
BUI IN
NO.2
E3
/ N0.1 NO.
INCINERATOR
SLUDGE HOLDING
' Ef LDING
TANk NO.2 —
SLUDGE HOLDING
N0
SLUDG
;F'L'"W�1'.U"L_Q_A_T1_C_
B
PUMPING STATION
.-----------"---
SILT FENCE, TYP TT-----
f-1 1 l
--3
II
II
II
NEW STEP 11
FEED PUMP N0.2
11
11
II
II
11ENGINE AND
BLOWER BUILDING
n
IIzm
NEW STEPFEED PUMP NO.1
0 ❑❑
LI
SLUDGE
THICKENER
(PRIMARY)
SLUDGE
DAF THICKENER
UNIT (SECONDARY)
-------------
,_LIMIT$-OF•N€W PAVEMENJ, SEE NOTE 8
_________________ _ __ _ FUEL•SANK PAD _ _
_INV= 50-:--;:_ __________ _____ ------- 72iYc39'L_._ SEE NOTEb)
Y7LRDJNLET ER_______RE GEF.KISI=YARD=It4LfF---____ _
CONTLI0L,0227001, SE
NOTE AND + - 40 LF 15' RCP -�-- - -
••.3, ---'------ ---- --
____ _0U58_LURB AS SHOWN _
Jag
45=RACK
----------
PA1ED ORIVEW'AY-__-___
DESIGNED LMS
DRAWN LMS&BRC
CHECKED JAC
PRDJ. ENGR ABL
JAC
THIS DOCUMENT ORIGINALLY ISSUED THIS DOCUMENT ORIGINALLY ISSUED
FOR CONSTRUCTION AND SEALED BY FOR CONSTRUCTION AND SEALED BY
JAMES A. CRAMER, SEAL NO. 8701. L MICHAEL SANTOWASSO, SEAL NO.
THIS MEDIA HAS M
D S BEEN MODIFIED TO 18560. THIS MEDIA HAS BEEN
REFLECT FIELD CHANGES IDENTIFIED MODIFIED TO REFLECT FIELD CHANGES
BY THE CONTRACTOR AND SHALL NOT IDENTIFIED BY THE CONTRACTOR AND
BE CONSIDERED A CERTIFIED SHALL NOT BE CONSIDERED A
DOCUMENT. CERTIFIED DOCUMENT.
k'4
RECORD DRAWING
1 03
JAC
ADDENDUM NO.1
I2 99
JAC
2
CONSTRULTION
1/99
JAC
1
REGULATORY APPROVAL
10/98
JAC
ND.
nn. Dart mmiv
ISSUED FOR
xw„ wevmm�mnmx asv..,wm,
DATE I
ar n,e .,uz
BY I
APPROVED
-------------
7""
-----------------
- -------------------------
------------
------------------
LJ
`> FINAL SETTLINGri:'j
\ ...::.TANK NO.4i,:,.:.::.:J;
FUEL
TANKS
TRICKLING FILTER NO.1
\ SITE PLAN
HAZEN AND SAWYER
Environmental Engineers & Scientists
4011 WestChose Blvd, Raleigh, North Carolina
SCRUBBERS NO.3&NO.4
CITY OF GREENSBORO,
NORTH CAROLINA
NLORTH BUFFAL--I `CREEK WWTP
IMPROVEMENTS
1
NOTES:
1 ALL EROSION CONTROL MEASURES SHALL BE INSTALLED
BEFORE, OR AS SOON AS PRACTICABLE AFTER, ANY LAND
CLEARING OR CONSTRUCTION ACTIVITIES MAY BEGIN.
2 ALL EROSION CONTROL MEASURES SHALL BE INSPECTED
WEEKLY, AND AFTER EACH RAINFALL EVENT GREATER THAN
0.5 INCHES OF PRECIPITATION, AND REPAIRED OR
REPLACED AS NECESSARY.
3 ALL NEW AND EXISTING YARD AND CURB INLETS RECEIVING
STORMWATER FLOW FROM DISTURBED AREAS SHALL BE
PROTECTED WITH YARD INLET EROSION CONTROL AND
CURB INLET SEDIMENT CONTROL MEASURES, SEE DETAILS
0227001 AND 0227002, RESPECTIVELY.
4 ALL EROSION CONTROL MEASURES SHALL BE CLEANED
WHEN SEDIMENT STORAGE VOLUME OF MEASURE IS HALF
FULL SEDIMENT SHALL BE DISPOSED IN MANNER
APPROV
ED BY THE ENGINEER SUCH THAT FURTHER
SEDIMENT TRANSPORT DOES NOT OCCUR.
5 ALL EROSION CONTROL MEASURES SHALL REMAIN IN PLACE
UNTIL PERMANENT VEGETATION HAS BEEN ESTARUSHED AS
PER THE SEEDING SCHEDULE, SEE SPECIFICATION SECTION
02910 - FINAL GRADING AND LANDSCAPING, AND THE
ENTIRE SITE HAS BEEN STABILIZED.
6 FOR PAD REINFORCING, SEE DETAIL 13/M403.
7 SEE MECHANICAL DWGS FOR PIPING IN THIS AREA.
8 SEE ELECTRICAL DWGS FOR NEW CONDUIT IN THIS AREA
—CHLORINE CONTACT AND
POST AERATION TANKS
1
STORM WATER PUMPING
STATION
TRICKLING FILTER
'\ PUMP STATION
TRICKLING FILTER NO.2
GENERAL
DRAINAGE AND EROSION
CONTROL PLAN
DISTURBED AREA = 0.5 ACRES
RECORD DRAWING
THE SCALE BAR DATE JANUARY 1999
SHOWN BELOW H 4 S JOB 30186
MEASURES ONE NUMBER
INCH LONG ON CONTRACT DRAWING
THE ORIGINAL NUMBER NUMBER
DRAWING. IA G2
SHEET 3 OF 48

CBM&
TYP I
RIM =
INV.
INV.
MI
REMO
MH &
TYP
RIM =
INV. I
PLUGI
P
LUG(
INV. (
CB-3
CURB I
a227(
GRATE
INV. OL
EXISTIN
STORM
EXISTIN
SEE NC
YI-5, 1
TOP =
INV. OU
105 LF
APPROXI.
STREAM
FES. TYF
024330
INV. OUl
FLOODWP
SITE PLAN
V=30'
NOTES:
1. NEW CATCH BASIN TO BE SET TO MATCH
PROPOSED GRADE AT RIM. CB GRATE TO BE
HS-20 RATED.
2. CONTRACTOR TO FIELD VERIFY LOCATION OF
EXISTING YARD INLET. CONNECTING STORM
DRAINAGE PIPING TO BE PLUGGED AND INLET
FILLED WITH CONCRETE TO PREVENT POSSIBLE
FLOODING FROM BACKFLOW.
N 3. ALL RCP STORMWATER PIPING SHALL BE CLASS 3
UNLESS OTHERWISE NOTED.
4. GRADE TO MATCH TOP OF METER VAULT 1& 2
AND DRAIN BOX AS SHOWN ON DWG M300.
5. THE 1% ANNUAL CHANCE FLOOD BASE FLOOD
ELEVATION (BFE) IS 718 (OBTAINED FROM
PRELIMINARY FEMA FLOOD PANEL 7875J, CROSS
SECTION 438). THERE IS AN EXISTING FLOOD
CONTROL BERM AROUND THE PLANT AND NO
CONSTRUCTION WILL TAKE PLACE OUTSIDE OF THIS
BERM WITHIN THE FLOODPLAIN. NO
ENCROACHMENT/DEVELOPMENT IN THE FEMA
REGULATED FLOODWAY WALL BE MADE.
T -
ENGINEER'S CERTIFICATION OF
STORMWATER QUANTITY CONTROL
THE STORMWATER MANAGEMENT STUDY
INCLUDED WITH THIS PLAN INDICATES THAT
THERE WILL BE NQ DOWNSTREAM FLOODING,
DRAINAGE, OR EROSION CONTROL PROBLEMS
AS A RESULT OF THE PROPOSED DEVELOPMENT
BETWEEN THE POINT WHERE THE RUNOFF
DISCHARGES FROM THE PROPERTY TO WHERE
THE SITE DEVELOPMENT AREA REPRESENTS
LESS THAN 10% OF THE TOTAL DRAINAGE
AREA. THEREFORE, NO QUANTITY CONTROL
IMPROVEMENT IS PROPOSED.
a
VICINITY MAP
NOT TO SCALE
LEGEND
NEW PAVEMENT AREA
30 IS 0 30,
1'=30'-0'
DESIGNED
—
THIS DOCUMENT ORIGINALLY ISSUED
RECORD DRAWING
2199 WHITE STREET, GREENSBORO, NORTH CAROLIN
THE SCALE BAR
DATE NOVEMBER 2005
DRAWN
H&S
FOR CONSTRUCTION AND SEALED BY
ROBERTS. DiFIORE, SEAL 22769
EN AND SAw�ER
GUILFORD COUNTY; GILMER TOWNSHIP
PARTIAL SITE PLAN
SHOWN BELOW
MEASURES ONE
H 6 S JOB
NUMBER 31039
3
RECORD DRAWING
CHECKED
H&S
THIS DOCUMENT ORIGINALLY ISSUED
THIS DRAWING HAS BEEN MODIFIED TO REFLECT FIELD CHANGES
REPORTED BY THE CONTRACTOR OR ANOTHER PARTY, BUT NOT
Environmental Engineers & $ClentlSt$-
GENERAL
INCH LONG ON
THE ORIGINAL
CONTRACT
DRAWING
-"'�-r+- '-
2
CONSTRUCTION
2/OB
RGE
PRDJ. ENGR
FOR CONSTRUCTION AND SEALED BY
L STONE,
ENGINEER. THIS DOCUMENT
VERIFIED BY THE CERTIFYING SEALED
ORIGINALLY ISSUED AND SEALED BY BARRY F. BICKERSTAFF,
4011 WeStChDSe Blvd, Ralei h, North Cafolino 2
e
_
607 `NORTH BUFFALO 'CREEK
DRAWING.
NUMBER
NUMBER
G5
I
REGULATORY APPROVAL
ALAN SEAL 18178
16722. THIS MEDIA SHALL NOT BE CONSIDERED A CERTIFIED
DOCUMENT.
TRANSFER PUMP STATION
STORM DRAINAGE PLAN
NO.
ISSUED FOR
GATE
BY
APPROVED
H4S FLAT FILE NO.
,b, —
O]/t0/0] ).Sbm ntE. H: \J1039VIVU a1ld0
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NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins
Governor Director
22 July 2010
Mr. Allan Williams
Director of Water Resources
City of Greensboro
PO Box 3136
Greensboro, NC 27402-3136
SUBJECT: Compliance Evaluation Inspection
Cboro' Nofth:B-i falo `VV!TP
r#`��P�TD_lES Per-initN.o:.NC0.924325._A
Guilford County - '
Dear Mr. Williams:
Dee Freeman
Secretary
A Compliance Evaluation Inspection (CEI) was performed on the City of Greensboro North Buffalo wastewater treatment
plant on Tuesday, July 20, 2010 by Corey Basinger of the Winston-Salem Regional Office. Ed Osborne, Wally Kling and
Martie Groome represented the City for the inspection. The inspection consisted of two parts: an on -site inspection of the
treatment facility and a file review. The following are the findings from the subject -inspection.
I. Permit
The NPDES permit for the City of Greensboro North Buffalo WWTP became effective February -1, 2007 and expires on
June 30, 2011. The permitted components of the wastewater treatment plant include: mechanical bar screens, influent flow
measurement (parshall flume), aerated grit removal, four primary settling tanks, and a 6 MGD flow transfer pump station to
TZ Osborne WWTP. Orip_inal Train consists of two trickling filters, activated sludge with nitrification (4 aeration basins
with fine bubble diffusers), step feed process (optional), chemical addition for phosphorus removal, and five secondary
clarifiers. #2 Train consists of activated sludge with nitrification and two secondary clarifiers. The flow from the two
separate trains come together and continue through the following treatment processes: four tertiary sand filters, effluent
flow measurement (parshall flume), chlorination and effluent aeration. Primary and waste activated sludge is pumped from
the City of Greensboro North Buffalo WWTP to the T.Z Osborne WWTP for dewatering and incineration.
II. Records/Reports
A review of the laboratory reports and Discharge Monitoring Reports (DMRs) for the City of Greensboro North Buffalo
WWTP revealed no discrepancy between the generated data and the data submitted to DWQ. A copy of the DMR is kept
on file at the wastewater plant. Maintenance records were deemed compliant with permit conditions. Operations records
include all sample analyses and process control tests that are performed daily. Calibration records for field parameters (pH,
DO, and Temp), as well as flow meter calibration records, were evaluated and deemed compliant. The records/reports
were very comprehensive and well organized.
III. Facility Site Review
On the date of inspection, the treatment system consisted of influent flow measurement, new transfer pump station to TZ
Osborne WWTP, five (5) mechanical bar screens, grit removal, four (4) primary clarifiers, four (4) activated sludge tanks
with nitrification, five (5) secondary clarifiers, four (4) tertiary sand filters, chlorination, and step post aeration. Primary
and waste activated sludge is pumped from the City of Greensboro North Buffalo WWTP to the T.Z Osborne WWTP for
dewatering and incineration.
The following units were out of service on the date of inspection: Primary Clarifier 1 & 4, Thickener 1, Aeration 1 & 2,
Final Tank 1, Sandfilter 2 (out but usable), Aeration 5, Finals 6 & 7 and Trickling Filters 1 & 2.
North Carolina Division of Water Quality, Winston-Salem Regional Office
Location: 585 Waughtown St. Winston-Salem, North Carolina 27107
Phone: [phone] FAX: [phone] Customer Service:1-877-623-6748 NorthC arolin a
Internet: www.ncwaterquallt .org
��l�tlril��lf
An Equal Opportunity \ Affirmative Action Employer

Mr. Allan Williams
22 July 2010
Page 2 of 3
IV. Effluent / Receiving Stream
The WWTP discharges to North Buffalo Creek (Class C-NSW in the Cape Fear River Basin). The receiving waters
appeared clear of solids and debris on the date of the subject inspection. There was no evidence of any previous bypasses.
V. Flow Measurement
Effluent flow is measured using a Parshall flume in conjunction with a Milltronics II Open Channel Monitor ultrasonic flow
meter, flow recorder, and totalizer. The flow meter is calibrated by WWTP staff by comparing it to the gauge reading and
then adjusting the meter accordingly. The flow meter is electronically calibrated at least once a year. The most recent
calibration was conducted in April 2010.
VI. Self -Monitoring Program
All monitoring was performed in compliance with the NPDES Permit No. NC0024325. Effluent limitation violations
occurring during the review period of April 2009 through April 2010 have been addressed via prior correspondence from
the Division.
All upstream and downstream sampling and monitoring is performed by the Upper Cape Fear River Basin Association.
VII. Compliance Schedules
None at this time. Jordan Rules nitrogen limits/allocation becomes effective 2016.
VIII. Laboratory
All of the sample analyses are conducted by the City of Greensboro Laboratory and Meritech, Inc.
IX. Operations and Maintenance
Operations and maintenance at the time of the subject inspection were deemed satisfactory. Equipment operations are
monitored using a SCADA system. Routine maintenance is performed and documented for all components of the
wastewater system. Operations and Maintenance logs were very comprehensive.
X. Sludge Utilization/Disposal
Waste activated sludge is pumped to the City of Greensboro T.Z. Osborne WWTP for dewatering and incineration.
XI. Pretreatment
The City has an approved pretreatment program that is evaluated separately from this inspection.
XII. Stormwater
The City of Greensboro North Buffalo WWTP has a general stormwater permit for the municipal wastewater treatment
plant. The certificate of coverage is number NCG110004. The required Stormwater Pollution Prevention Plan was
available at the wastewater plant. The required monitoring had been performed semi-annually as required by the permit.
XIII. Sewer Overflow, Pollution Prevention & Multimedia
Not evaluated during this inspection.
.4

0 . Mr. Allan Williams
22 July 2010
Page 3 of 3
XIV. Other
The previous inspection was conducted by Corey Basinger on June 24, 2009.
If you have any questions or concerns regarding this report, please contact Corey Basinger at 336-771-4963.
Sincerely,
*Steve Tedder
Water Quality Supervisor
Cc: Ed Osborne, PO Box 3136, G'boro, NC 27402
Don Howard, City of Greensboro, PO Box 3136, G'boro, NC 27402
Martie Groome, City of Greensboro, PO Box 3136, G'boro, NC 27402
Guilford County Health Department
Central Files
Ti -s$ -

Form Approved
Qn
OMB No.2040-0057
Approval Expires
United States Environmental Protection Agency, Washington, D.C. 20460
8-31-98
Section A: National Data System Coding
Transaction Code NPDES No. Yr/Mo/Day Inspection Type Inspector FacilityType
N 5 NCO024325 10-07-20 C S 1
Facility Evaluation Rating BI QA ..........Reserved...........
5 N N_
Section B: Facility Data
Name and Location of Facility Inspected:
Entry Time:
Permit Effective
0835 hrs.
Date: Feb 1, 2007
City of Greensboro —North Buffalo
Wastewater Treatment Plant
Exit Time:
Permit Expiration
Date: June 30, 2011
Name(s) of On -Site Representative(s): Title(s): Phone No(s):
Mr. Ed Osborne ORC [phone]
Mr. Wally Kling Back-up ORC [phone]
Ms. Martie Groome Laboratory Supervisor [phone]
Name, Address of Responsible Official:
Title: Director of Water Resources
Mr. Allan Williams
City of Greensboro
Phone No. 336-373-2055
Contacted? No
PO Box 3136
Greensboro, NC 27402
Section C: Areas Evaluated During Inspection-,
• Permit • Flow Measurement • Operations/Maintenance
• Records/Reports • Self -Monitoring Program • Sludge Handling/Disposal
• Facility Site Review • Effluent/Receiving Waters • Stormwater
Section D: Summary of Findings/Comments.
Permit..................................Current permit expires June 30, 2011.
Records/Reports ..................The operator's daily records are maintained as per permit conditions.
Facility Site Review ............ All system components were operating properly. See Item III of cover letter for further details.
Effluent/Receiving Waters.. Effluent was clear and free of solids/debris/excessive foam on date of inspection.
Flow Measurement..............No problems noted
Self -Monitoring Program.... The DMR's are submitted as required by NPDES permit
Operations/Maintenance ..... No problems were noted with respect to operations and maintenance.
Sludge Disposal ..................Solids are incinerated on site.
(SEE DATA SUMMARY ATTACHED FOR THE PERIOD 04/09 - 04/10)
Name s) and Signatures) Ff Inspectors:
Agency/Office/Telephone:
Date:
DWQ / WSRO / [phone]
Signature of fewer:
Agency/Office:
Date:
��!
DWQ / WSRO / [phone]

Permit: NCO024325
Inspection Date: 07/20/2010
Owner - Facility: North Buffalo Creek WWTP
Inspection Type: Compliance Evaluation
Operations & Maintenance Yes
No
NA
NE
Is the plant generally clean with acceptable housekeeping? ■
n
❑
❑
Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable Solids, pH, DO, Sludge ■
n
n
❑
Judge, and other that are applicable?
Comment:
Permit Yes
No
NA
NE
(If the present permit expires in 6 months or less). Has the permittee submitted a new application? ❑
❑
■
n
Is the facility as described in the permit? ■
❑
n
n
# Are there any special conditions for the permit?
i1
❑
■
n
Is access to the plant site restricted to the general public?
■
❑
n
❑
Is the inspector granted access to all areas for inspection?
■
❑
n
n
Comment:
Record Keeping
Yes
No
NA
NE
Are records kept and maintained as required by the permit?
■
❑
❑
❑
Is all required information readily available, complete and current?
■
❑
❑
n
Are all records maintained for 3 years (lab. reg. required 5 years)?
■
❑
Cl
Cl
Are analytical results consistent with data reported on DMRs?
■
n
❑
❑
Is the chain -of -custody complete?
■
❑
f1
❑
Dates, times and location of sampling
■
Name of individual performing the sampling
■
Results of analysis and calibration
■
Dates of analysis
■
Name of person performing analyses
■
Transported COCs
■
Are DMRs complete: do they include all permit parameters?
■
❑
❑
❑
Has the facility submitted its annual compliance report to users and DWQ?
■
❑
❑
n
(If the facility is = or > 5 MGD permitted flow) Do they operate 24/7 with a certified operator on each shift?
■
❑
n
❑
Is the ORC visitation log available and current?
■
❑
❑
n
Is the ORC certified at grade equal to or higher than the facility classification?
■
n
n
n
Is the backup operator certified at one grade less or greater than the facility classification?
■
❑
❑
❑
Is a copy of the current NPDES permit available on site?
■
❑
❑
❑
Page # 3

Permit: NCO024325 Owner - Facility: North Buffalo Creek WWTP
Inspection Date: 07/20/2010 Inspection Type: Compliance Evaluation
Record Keeping
Yes No
NA
NE
Facility has copy of previous year's Annual Report on file for review?
■
n
n
❑
Comment:
Effluent Pipe
Yes
No
NA
NE
Is right of way to the outfall properly maintained?
■
n
n
n
Are the receiving water free of foam other than trace amounts and other debris?
■
n
n
n
If effluent (diffuser pipes are required) are they operating properly?
n
n
■
n
Comment:
Flow Measurement - Effluent
Yes
No
NA
NE
# Is flow meter used for reporting?
■
n
n
n
Is flow meter calibrated annually?
■
n
n
n
Is the flow meter operational?
■
n
n
n
(If units are separated) Does the chart recorder match the flow meter?
n
n
n
■
Comment:
Solids Handling Equipment
Yes
No
NA
NE
Is the equipment operational?
n
n
n
■
Is the chemical feed equipment operational?
n
n
n
■
Is storage adequate?
❑
n
n
Is the site free of high level of solids in filtrate from filter presses or vacuum filters?
n
n
n
■
Is the site free of sludge buildup on belts and/or rollers of filter press?
n
n
n
■
Is the site free of excessive moisture in belt filter press sludge cake?
n
n
n
■
The facility has an approved sludge management plan?
n
n
n
■
Comment: all solids are sent to TZ Osborne WWTP for incineration
Pump Station - Influent
Yes
No
NA
NE
Is the pump wet well free of bypass lines or structures?
n
n
n
Is the wet well free of excessive grease?
nnIn
Are all pumps present?
n
n
n
Are all pumps operable?
n
n
n
■
Are float controls operable?
n
n
n
■
Is SCADA telemetry available and operational?
n
n
n
■
Is audible and visual alarm available and operational?
n
In
n
■
Page # 4

4 .
Permit: NC0024325 Owner - Facility: North Buffalo Creek WWfP
Inspection Date: 07/20/2010 Inspection Type: Compliance Evaluation
Pump Station - Influent
Yes
No
NA NE
Comment: all pump stations are inspected by collection system inspector
Bar Screens
Yes
No
NA NE
Type of bar screen
a.Manual
b.Mechanical
■
Are the bars adequately screening debris?
■
n
n n
Is the screen free of excessive debris?
■
n
n n
Is disposal of screening in compliance?
■
❑
❑ ❑ .
Is the unit in good condition?
■
fl
❑ ❑
Comment:
Type of grit removal
a.Manual
❑
b.Mechanical
■
Is the grit free of excessive organic matter?
■
❑ ❑
Is the grit free of excessive odor?
■
0 ❑
# Is disposal of grit in compliance?
■
n n n
Comment:
Primary Clarifier
Yes
No NA NE
Is the clarifier free of black and odorous wastewater?
■
❑ ❑ 0
Is the site free of excessive buildup of solids in center well of circular clarifier?
■
❑ ❑ Cl
Are weirs level?
■
Q ❑ ❑
Is the site free of weir blockage?
■
Is the site free of evidence of short-circuiting?
■
❑ ❑ Q
Is scum removal adequate?
■
❑ 0 Cl
Is the site free of excessive floating sludge?
■
❑ ❑ D
Is the drive unit operational?
■
Q C]
Is the sludge blanket level acceptable?
■
❑ n ❑
Is the sludge blanket level acceptable? (Approximately'/ of the sidewall depth)
■
n n ❑
Comment: #1 & 4 out of service at time of inppection
Page # 5

Permit: NCO024325 Owner - Facility: North Buffalo Creek WWTP
Inspection Date: 07/20/2010 Inspection Type: Compliance Evaluation
Secondary Clarifier
Yes No
NA
NE
Is the clarifier free of black and odorous wastewater?
■
n
n
n
Is the site free of excessive buildup of solids in center well of circular clarifier?
■
n
n
n
Are weirs level?
■
n
n
n
Is the site free of weir blockage?
■
n
n
n
Is the site free of evidence of short-circuiting?
®
❑
❑
n
Is scum removal adequate?
■
n
n
n
Is the site free of excessive floating sludge?
■
n
n
n
Is the drive unit operational?
■
n
n
n
Is the return rate acceptable (low turbulence)?
■
n
n
n
Is the overflow clear of excessive solids/pin floc?
■
n
n
n
Is the sludge blanket level acceptable? (Approximately '/< of the sidewall depth)
■
n
n
n
Comment: Final tank #1 out of service at time of inspection. Finals 6 & 7 also out of
service.
Aeration Basins
Yes
No
NA
NE
Mode of operation
Ext.
Air
Type of aeration system
Diffused
Is the basin free of dead spots?
■
n
n
n
Are surface aerators and mixers operational?
■
n
n
n
Are the diffusers operational?
®❑
n
n
Is the foam the proper color for the treatment process?
■
n
n
n
Does the foam cover less than 25% of the basin's surface?
■
n
n
n
Is the DO level acceptable?
n
n
n
Is the DO level acceptable?(1.0 to 3.0 mg/I)
■
n
n
C1
Comment: Aeration #1 & 2 out of service at time of inspection.
Aeration 5 also out of service.
Filtration (High Rate Tertiary)
Yes
No
NA NE
Type of operation:
Down flow
Is the filter media present?
®
n
n
n
Is the filter surface free of clogging?
®
n
❑
❑
Is the filter free of growth?
®
n
Cl
n
Page # 6

Permit: NC0024325 Owner - Facility: North Buffalo Creek WWTP
Inspection Date: 07/20/2010 Inspection Type: Compliance Evaluation
Filtration (High Rate Tertiary)
Yes
No
NA
NE
Is the air scour operational?
■
❑
❑
❑
Is the scouring acceptable?
■
Cl
❑
n
Is the clear well free of excessive solids and filter media?
■
n
❑
n
Comment: Sandfilter 2 out of service but usable at time of inpsection
Pumps-RAS-WAS
Yes
No
NA
NE
Are pumps in place?
■
n
n
n
Are pumps operational?
■
n
n
rl
Are there adequate spare parts and supplies on site?
■
n
n
n
Comment:
Effluent Sampling
Yes
No
NA
NE
Is composite sampling flow proportional?
■
❑
❑
❑
Is sample collected below all treatment units?'
■
❑
❑
❑
Is proper volume collected?
■
❑
❑
❑
Is the tubing clean?
■
n
n
n
# Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees Celsius)?
■
n
n
n
Is the facility sampling performed as required by the permit (frequency, sampling type representative)?
■
❑
❑
❑
Comment:
Upstream / Downstream Sampling
Yes
No
NA
NE
Is the facility sampling performed as required by the permit (frequency, sampling type, and sampling location)?
■
n
n
n
Comment:
Influent Sampling
Yes
No
NA
NE
# Is composite sampling flow proportional?
®
n
011
Is sample collected above side streams?
■
.n
Cl
n
Is proper volume collected?
■
❑
❑
❑
Is the tubing clean?
■
❑
❑
❑
# Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees Celsius)?
■
❑
❑
❑
Is sampling performed according to the permit?
■
n
❑
n
Comment:
Flow Measurement - Influent
Yes
No
NA
NE
# Is flow meter used for reporting?
■
n
n
In
Page # 7

Permit: NC0024325 Owner - Facility: North Buffalo Creek WWTP
Inspection Date: 07/20/2010 Inspection Type: Compliance Evaluation
Flow Measurement - Influent
Yes
No
NA
NE
Is flow meter calibrated annually?
■
n
n
n
Is the flow meter operational?
■
n
n
n
(If units are separated) Does the chart recorder match the flow meter?
n
n
n
■
Comment:
Trickling Filter
Yes
No
NA
NE
Is the filter free of ponding?
n
n
n
■
Is the filter free of leaks at the center column of filters distribution arms?
n
n
n
■
Is the distribution of flow even from the distribution arms?
n
n
n
■
Is the filter free of uneven or discolored growth?
n
n
n
■
Is the filter free of sloughing of excessive growth?
n
n
n
■
Are the filter's distribution arms orifices free of clogging?
n
n
n
Is the filter free of excessive filter flies, worms or snails?
n
r
n
Comment: out of service at time of inspection
Yes
No
NA
NE
Is containment adequate?
®❑
❑
n
Is storage adequate?
■
n
n
n
Are backup pumps available?
■
In
n
n
Is the site free of excessive leaking?
■
n
n
n
Comment:
Standby Power
Yes
No
NA
NE
Is automatically activated standby power available?
■
n
n
n
Is the generator tested by interrupting primary power source?
®
n
n
n
Is the generator tested under load?
®
❑
n
n
Was generator tested & operational during the inspection?
n
n
n
■
Do the generator(s) have adequate capacity to operate the entire wastewater site?
■
n
In
n
Is there an emergency agreement with a fuel vendor for extended run on back-up power?
■
n
n
n
Is the generator fuel level monitored?
■
n
In
n
Comment:
Disinfection -Liquid
Yes
No
NA
NE
Is there adequate reserve supply of disinfectant?
®
n
00
Page # 8

Permit: NC0024325 Owner - Facility: North Buffalo Creek WWTP
Inspection Date: 07/20/2010 Inspection Type: Compliance Evaluation
Disinfection -Liquid Yes No NA NE
(Sodium Hypochlorite) Is pump feed system operational? ■ ❑ ❑ ❑
Is bulk storage tank containment area adequate? (free of leaks/open drains) ■ ❑ ❑ ❑
Is the level of chlorine residual acceptable? ■ ❑ 0 ❑
Is the contact chamber free of growth, or sludge buildup? ■ ❑ ❑ ❑
Is there chlorine residual prior to de -chlorination? ❑ ❑ ❑
Comment:
Page # 9

.r.�
A 4
d ®gyfl
!m
North Carolina Department of Environment and Natural
Division of Water Quality
-` Beverly Eaves Perdue Coleen H. Sullins
Governor Director
September 1, 2010
_: Mr. Allan Williams, Director of Water Resources
---.----City of Greensboro--^-�-- ---
2199 White Street
Greensboro, NC 27405
Dear Mr. Williams:
RECEIVED
N.C. Deot. of ENR
SEP 0 7 2090
Winston-Salem
Resou kes
Regional Office
Dee�eman
Secretary
Subject: NPDES Permit Modifications - Revised
Permits tfff,Q02 2 nd NCO047384
North Buffalo and T.Z. Osborne WWTPs
Guilford County
In November 2009, the Division of Water Quality proposed modifications of the subject permits to
incorporate new nutrient requirements established under the Jordan Lake Nutrient, Management
Strategy. The Division has revised the draft permits in response to the City's comments and is
enclosing the revised drafts for your review and comment.
At this time, the Division is submitting a notice to the newspaper of general circulation in Guilford
County, inviting public comment on the draft permits for the affected facilities.. The notice is scheduled
for publication on or about September 3 and initiates a 30-day comment period.
Please provide any comments you have regarding the draft permit to this office, in writing, no later
than 30 days of receipt of this letter.
The revised draft permits include the following changes from the previous versions:
• Total Phosphorus (TP) Limits. Phosphorus limits have been removed from Condition A. (1.) of each
permit. A new Condition A.(2.) describes the combined TP limit for the two facilities and how it
will be administered. Other nutrient -related conditions of the permit have been modified as
necessary. Each facility will continue to monitor and report its nutrient discharges individually, and
we propose that the City report the combined load once each year, with the December monitoring
report for one plant. As noted earlier, phosphorus limits in the Jordan Lake watershed became
effective January 1, 2010, according to the wastewater rule.
• Standard Permit Conditions. Most of the comments received from the Jordan Lake dischargers
during the public review pertained to changes in the standard conditions, Parts II, III, and IV of the
permits. The permittees noted a small number of minor errors, but most comments had to do with
changes in Part IV, where language was revised in anticipation of changes in the state pretreatment
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 One
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604 NOl t�1�01111a
Phone: [phone] FAX: [phone] Customer Service:1-877-623-6748
Internet: www.ncwaterquality.org vVaturally
An Equal Opportunity 1 Affirmative Action Employer

r ,
Mr. Allan Williams, Director ui Water Resources "
NPDES Permit Modifications - Revised
September 1, 2010
rules. The Division has corrected the minor errors and reversed all changes from Part N that are
not supported by existing state'or federal rules.
• Treatment Process Description. The process descriptions on the Supplement to Cover Pages for
both plants have been modified as the City requested.
• Nitrogen Optimization. The previous draft permit included a new condition pertaining to nitrogen
optimization requirements from the wastewater rule. That compliance date has passed, and the
proposed condition has been deleted from the permit.
• Nutrient Re -opener. The nutrient monitoring re -opener from the previous permit pertained to
monitoring in preparation for. the Jordan Lake study. It is no longer- necessary and has been deleted
from the permit.
• Total Residual Chlorine Footnote. A footnote has been added to Condition A.(1.) indicating that
the Division considers the compliance level for TRC to be 50 ug/L. All lab values must still be
reported but, for compliance purposes, values below 50 ug/L meet the facility's TRC limit.
Group Compliance Association. The Jordan Lake wastewater rule provides that interested dischargers
may form an association and thereafter be subject to group limits for TN and TP. Once they establish
the association, the members must obtain a new NPDES group permit, which supplements their
existing individual permits. Dischargers may form the association and apply for a group permit at any
time. Any group limits become effective on the first January 1 after permit issuance, and members
remain subject to their individual permit limits until that time. Please let me know if you wish to
discuss this option further.
If you have any questions concerning the draft permit, please contact me at [phone] or at
[e-mail].
Sincerely,
Michael E. Templeton, P.E.
Point Source Branch
Enclosure: Revised draft permit modifications, NCO024325 and NCO047384
Copies: Chief, NPDES and Biosolids Permits Section, Region IV, EPA
WuistQia;SaI m�R gioria C-?�fffice, Surface Water Protection
Lee Spencer, Winston-Salem lzegional Office, DEH
Steve Reid, Technical Assistance and Certification Unit
PERCS Unit
NPDES Files

Permit No. NCO024325
STATE OF NORTH CAROLINA
DEPARTMENT -OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provisions of North Carolina General Statute 143-215.1, other lawful standards
and regulations promulgated and adopted by the North Carolina Environmental Management
Commission, and the Federal Water Pollution Control Act, as amended, the
City of Greensboro
is hereby authorized to discharge wastewater from a facility located at the
North Buffalo WWTP
2199 White Street, Greensboro
Guilford County
to receiving waters designated as North Buffalo Creek in the Cape Fear River Basin
in accordance with effluent limitations, monitoring requirements, and other conditions set forth in
Parts I, II, III, and IV hereof.
This permit shall become effective................................................................................................... --
This permit and authorization to discharge shall expire at midnight on ................................ June 30, 2011.
Signed this day ...............................
Coleen H. Sullins, Director
Division of Water Quality
By Authority of the Environmental Management Commission

Permit No. NCO024325
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked. As of
this perneit issuance, any previously issued permit bearing this member is no longer effective. Therefore, the
exclusive authority to operate and discharge from this facility arises under the permit conditions, requirements,
terms, and provisions included herein.
The City of Greensboro
is hereby authorized to:
1:-- -Continue--to-operate an- existing 16.0 MGD activated sludge wastewater- treatment -facility located at -
the North Buffalo Creek WWTP (2199 White Street, Greensboro, Guilford County). This facility
includes the following treatment components:
• Mechanical bar screens
• Influent flow measurement (Parshall flume and magnetic flow meter)
• Aerated grit removal
• Four primary settling tanks
• 80 MGD flow transfer pump station to TZ Osborne
From here the flow continues through one of the following treatment trains:
Original Train
• Two trickling filters. (currently not in use)
• Activated sludge with nitrification (4 aeration basins with fine bubble diffusers)
• Step feed process (optional)
• Chemical addition for phosphorus removal
• Five secondary clarifiers
#2 Train
Activated sludge with nitrification (1)
Secondary clarifiers (2)
The flows from the two separate trains come together and continue through the following
treatment processes:
• Four tertiary sand filters
• Effluent flow measurement (Parshall flume)
• Chlorination
• Effluent aeration
2. Discharge from said treatment works (via Outfall 001) into North Buffalo Creek, a Class C-NSW
stream in the Cape Fear River Basin, at the location specified on the attached map.
ii

m
a
M
USGS Quad #: C20SW
Lat. 360 06' 34" Lonq. -790 44' 53"
V
0
N
SCALE T
1:24,000
(1- = 2000�
Discharge Location
Outfall 001
;=7
F
City of Greensboro — North Buffalo WWTP
NCO024325
County: Guilford
Receiving Stream: North Buffalo Creek
Stream Classification: C NSW
River Basin: Cape Fear
Sub -Basin #: 03-06102

Permit No. NCO024325
A#.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - Outfall 001
During the period beginning on the effective date of this permit and lasting until expiration, the
Permittee is authorized to discharge treated wastewater from Outfall 001. Such discharges shall be
limited and monitored by the Permittee as specified below:
EFFLUENT
CHARACTERISTICS
EFFLUENT LIMITATIONS
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
Daily ..
Maximum
Measurement
Frequency
Sample Type
Sample Location
Flow
16.0 MGD
Continuous
Recording
Influent or Effluent
Total Monthly Flow (MG)
Monitor & Report
Monthly
Rec. or Calc.
Influent or Effluent
CBOD, 5-day, 20°C (Summer)2
8.0 mg/L
12.0 mg/L
Daily
Composite
Influent & Effluent
CBOD, 5-day, 20°C (Winter)2
16.0 mg/L
24.0 mg/L
Daily
Composite
Influent & Effluent
- Total-Suspended-Solids2— -
30:0-mg/L
—45.0-mg/L
---
-- ---Daily
—Composite
-Influent-& Effluent--
NH3 as N (Summer)
4.0 mg/L
12.0 mg/L
Daily
Composite
Effluent
NH3 as N (Winter)
8.0 mg/L
24.0 mg/L
Daily
Composite
Effluent
Fecal Coliform
(geometric mean)
200/100mL
400/100mL
T Daily
Grab
Effluent
Dissolved Oxygen 3
Daily
Grab
Effluent
Temperature (°C)
Daily
Grab
Effluent
pH 4
Daily
Grab
Effluent
Total Residual Chlorine 5
17.0 pg/L
Daily
Grab.
Effluent
TKN
Monitor & Report (mg/L)
Weekly
Composite
Effluent
NO3-N + NO2-N
Monitor & Report (mg/L)
Weekly
Composite
Effluent
Total Nitrogen, TN 6
Monitor & Report (mg/L)
Weekly
Composite
Effluent
TN Load' e
Monitor & Report (lb/mo)
Monitor & Report (lb/yr)
Monthly
Annually
Calculated
Effluent
Total Phosphorus, TP
Monitor & Report (mg/L)
Weekly
Composite
Effluent
TP Load' e
Monitor & Report (lb/mo)
Monitor & Report (lb/yr)
Monthly
Annually
Calculated
Effluent
Total Cyanide 9
5.2 pg/L
22.0 pg/'L
Weekly
Grab
Effluent
Total Mercury 10
0.012 pg/L
Weekly
Grab
Effluent
Total Chromium
51.0 pg/L
1022.0 pg/L
Weekly
Composite
Effluent
Total Nickel
91.0 pg/L
261.0 pg/L
Weekly
Composite
Effluent
Fluoride*
1.9 mg/L
Weekly
Composite
Effluent
Total Copper
2/Month
Composite
Effluent
Total Zinc
2/Month
Composite
Effluent
Total Iron
Monthly
Composite
Effluent
Total Selenium
Quarterly
Composite.,
Effluent
Chloride
Quarterly
Composite
Effluent
Chronic Toxicity 11
Quarterly
Composite
Effluent
Effluent Pollutant Scan
See Special Condition A.(4.)
Annually
Grab/Comp.
Effluent
Dissolved Oxygen 12
12
Grab
U, D1, D2, D3
Fecal Coliform 12
12
Grab
U, D1, D2, D3
Temperature (IC) 12
12
Grab
U, D1, D2, D3
Conductivity 12
12
Grab
U, D1, D2, D3
All footnotes are listed on the following page.
PART I, Page 1 of 9

Permit No. NCO024325
Footnotes:
(Summer): April 1- October 31
(Winter): November 1- March 31
(Daily): every day on which a wastewater discharge occurs except Saturdays, Sundays, and legal holidays unless otherwise
specified by the Director.
1. U: Upstream at the influent conduit. D1: Downstream at the unimproved road 0.8 miles east of White/Nealtown Road
intersection. D2: Downstream at Rankin Mill Road. D3: Downstream in Buffalo Creek at McCleansville Road.
2. The monthly average effluent CBOD5 and TSS concentrations shall not exceed 15% of the respective influent value (85%
removal).
3. The daily effluent dissolved oxygen concentration shall not be less than 6.0 mg/L.
4. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
5. The Division shall consider all effluent TRC values reported below 50 ug/L to be in compliance with the permit.
However, the Permittee shall continue to record and submit all values reported by a North Carolina certified laboratory
__—(including-field--certified)even_ifthesevalues_fall_below50_ug/_L._-------___
6. TN is Total Nitrogen = TKN + NO3-N + NOz-N, where TKN is Total Kjeldahl Nitrogen, NO3-N and NO2-N are Nitrate
and Nitrite Nitrogen, respectively.
7. TN or TP Load is the mass quantity of Total Nitrogen or Phosphorus discharged in a given period of time. See Special
Condition A.(7.), Calculation and Reporting of Nutrient Loads.
8. The facility is subject to nutrient limitations as specified in Special Condition A. (2.), Combined Limitations for Nutrients.
9. The quantitation limit for cyanide shall be 20 µg/L; levels reported below 20 µg/L shall be considered zero for
compliance purposes.
10. Effluent samples must be analyzed by an EPA -approved low level mercury analysis method.
11. Chronic Toxicity (Ceriodaphnia) at 90% with testing in January, April, July and October (see Special Condition A. (3.)).
12. Instream monitoring requirements are waived as long as facility retains membership in the UCFRBA. If membership is
cancelled, facility will monitor 3/ Week Qune-September) and 1/ Week (October -May). Stream sampling may be
discontinued at such times as flow conditions in the receiving waters or extreme weather conditions will result in a
substantial risk of injury or death to persons collecting samples. Upon such discontinuance, stream sampling shall be
resumed at the first opportunity after the risk period has ceased.
* The limit might be removed if the facility submits 12 month of data that shows no reasonable potential to exceed the water
quality standard.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
PART I, Page 2 of 9

Permit No. NCO024325 !
A.(2.) COMBINED LIMITATIONS FOR NUTRIENTS - Outfall C01
(a.) During the period beginning on the dates specified below and lasting until permit expiration, the
Permittee is further authorized to discharge Total Nitrogen and Total Phosphorus from the T.Z.
Osborne WWTP (NC0047384, Outfall 001) and the North Buffalo Creek WWTP (NC0024325,
Outfall 001) subject to the following combined, delivered'load limitations:
Total Nitrogen, Total Phosphorus,
Delivered (lb/yr)1 Delivered (lb/yr)1
Permit Facility Active , . Combined Active Combined
Allocations Limit Allocations Limit
NCO047384 T.Z. Osborne WWTP 1 290,375 35,708
_NCO024325 I North .Bufalo_Creek WWTP_ 110,698.____13,591
401,073 49,299
(effective 1/1/2016) (effective 1/1/2010)
Footnote:
1 Allocations and limits in this table are expressed as delivered loads. See Condition A.(7.) regarding
calculation of delivered loads from discharge loads.
(b.) Compliance with these limits shall be determined in accordance with Special Conditions A.(6),
Annual Limits for Total Nitrogen and Total Phosphorus, and A.(7.), Calculation and Reporting of
Nutrient Loads.
(c.) Nutrient monitoring and reporting requirements are specified in Special Conditions A.(1.),
Effluent Limitations and Monitoring Requirements, and A.(7.), Calculation and Reporting of
Nutrient Loads.
(d.) Pursuant to N.C. General Statute Section 143-215.1 and the implementing rules found in Title 15A
of the North Carolina Administrative Code, specifically,15A NCAC 02B.0270, and Part II,
Sections B-12 and B-13 of this permit, the Division of Water Quality (Division) may reopen the
permits listed above and establish more stringent nutrient limits upon finding that such limits are
necessary to prevent the discharges from causing localized water quality impacts in the receiving
streams.
(e.) The Permittee may request that its permits be modified to rescind these combined limits and
establish individual mass discharge limits for each facility. The Division may, after written
notification to the Permittee, rescind these combined limits and establish individual mass
discharge limits for each facility if it determines that the combined limits do not support the
objectives of the Jordan Lake Nutrient Management Strategy. The Division shall provide for
public review of the proposed permit modifications and include in the permit an appropriate
schedule of compliance for the proposed nutrient limits.
PART I, Page 3 of 9

Permit No. NCO024325
A.(3.) CHRONIC TOXICITY PASS/FAIL PERMIT LIMIT
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant
mortality to Ceriodaphnia dubia at an effluent concentration of 90%.
The permit holder shall perform at a minimum, uag rterlmonitoring using test procedures outlined in
the "North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised February 1998, or
subsequent versions or "North Carolina Phase II Chronic Whole Effluent -Toxicity Test Procedure"
(Revised -February 1998) or subsequent versions. The tests will be performed during the months of
January, April, July, and October. Effluent sampling for this testing shall be performed at the NPDES
permitted final effluent discharge below all treatment processes.
If the test procedure performed as the first test of any single quarter results in a failure or ChV below
the permit limit, then multiple -concentration testing shall be performed at a minimum, in each of the
_ .. two following months as described. in "North Carolina Phase II Chronic Whole Effluent Toxicity_Test_
Procedure" (Revised -February 1998) or subsequent versions.
The chronic value for multiple concentration tests will be determined using the geometric mean of the
highest concentration having no detectable impairment of reproduction or survival and the lowest
concentration that does have a detectable impairment of reproduction or survival. The definition of
"detectable impairment," collection methods, exposure regimes, and further statistical methods are
specified in the "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised -
February 1998) or subsequent versions.
All toxicity testing results required as part of this permit condition will be entered onthe Effluent
Discharge Monitoring Form (MR-1) for the months in which tests were performed, using the parameter
code TGP3B for the pass/fail results and THP313 for the Chronic Value. Additionally, DWQ Form AT-
3 (original) is to be sent to the following address:
NCDENR/ DWQ/ Environmental Sciences Section
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Section no later
than 30 days after the end of the reporting period for which the report is made.
Test data shall be complete, accurate, include all supporting chemical/physical measurements and all
concentration/response data, and be certified by laboratory supervisor and ORC or approved
designate signature. Total residual_ chlorine of the effluent toxicity sample must be measured and
reported if chlorine is employed for disinfection of the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is
required, the permittee will complete the information located at the top of the aquatic toxicity (AT) test
form indicating the facility name, permit number, pipe number, county, and the month/year of the
report with the notation of "No Flow' in the comment area of the form. The report shall be submitted
to the Environmental Sciences Section at the address cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required,
monitoring will be required during the following month. Should any test data from this monitoring
requirement or tests performed by the North Carolina Division of Water Quality indicate potential
impacts to the receiving stream, this permit may be re -opened and modified to include alternate
monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control
organism survival, minimum control organism reproduction, and appropriate environmental controls,
shall constitute an invalid test and will require immediate follow-up testing to be completed no later
than the last day of the month following the month of the initial monitoring.
PART I, Page 4 of 9

Permit No. NCO024325 .'
A.(4.) EFFLUENT POLLUTANT SCAN
The Permittee shall perform an annual Effluent Pollutant Scan for all parameters listed in the attached
table (using a sufficiently sensitive detection level in accordance with 40 CFR Part 136). The Permittee
shall perform 3 Effluent Pollutant Scans prior to submitting the permit renewal application.
Samples shall represent seasonal variations. Unless otherwise indicated, metals shall be analyzed as
"total recoverable."
Ammonia (as N)
Trans-1,2-dichloroethylene
Chlorine (total residual, TRC)
1,1-dichloroethylene
Dissolved oxygen
1,2-dichloropropane
Nitrate/Nitrite
1,3-dichloropropylene
Total Kjeldahl nitrogen
Ethylbenzene
Oil and grease
Methyl bromide
- Total Phosphorus- -- - -
-Methyl-chloride- -- - - -- -
Total dissolved solids
Methylene chloride
Hardness
1,1,2,2-tetrachloroethane
Antimony
Tetrachloroethylene
Arsenic
Toluene
Beryllium
1,1,1-tichloroethane
Cadmium
1,1,2-tichloroethane
Chromium
Trichloroethylene
Copper
Vinyl chloride
Lead
Acid -extractable compounds:
Mercury
P-chloro-m-cresol
Nickel
2-chlorophenol
Selenium
2,-4-dichlorophenol
Silver
2,4-dimethylphenol
Thallium
4,6-dinitro-o-cresol
Zinc
2,4-dinitrophenol
Cyanide
2-nitrophenol
Total phenolic compounds
4-nitrophenol
Volatile organic compounds:
Pentachlorophenol
Acrolein
Phenol
Acrylonitrile
2,4,6-trichlorophenol
Benzene
Base -neutral compounds:
Bromoform
Acenaphthene
Carbon tetrachloride
Acenaphthylene
Chlorobenzene
Anthracene
Chlorodibromomethane
Benzidine
Chloroethane
Benzo(a)anthracene
2-chloroethylvinyl ether
Benzo(a)pyrene
Chloroform
3,4 benzofluoranthene
Dichlorobromomethane
Benzo.(ghi)perylene
1,1-dichloroethane
Benzo(k)fluoranthene
1,2-dichloroethane
Bis (2-chloroethoxy) methane
Bis (2-chloroethyl) ether
Bis (2-chloroisopropyl) ether
Bis (2-ethylhexyl) phthalate
4-bromophenyl phenyl ether
Butyl benzyl phthalate
2-chloronaphthalene
--4-chlorophenyl phenyl ether-
Chrysene
Di-n-butyl phthalate
Di-n-octyl phthalate
Dibenzo (a,h) anthracene
1,2-dichlorobenzene
1,3-dichlorobenzene
1,4-dichlorobenzene
3,3-dichlorobenzidine
Diethyl phthalate
Dimethyl phthalate
2,4-dinitrotoluene
2,6-dinitrotoluene
1,2-diphenylhydrazine .
Fluoranthene
Fluorene
Hexachlorobenzene
Hexachlorobutadiene
Hexachlorocyclo-pentadiene
Hexachloroethane
Indeno (1,2,3-cd)pyrene
Isophorone
Naphthalene
Nitrobenzene
N-nitroso di-n-propylamine
N-nitrosodimethylamine
N-nitros odiphenylainine
Phenanthrene
Pyrene
1,2,4-trichlorobenzene
Test results shall be reported to the Division in DWQ Form- DMR-PPA1 or in a form approved by the
Director within 90 days of sampling. The report shall be submitted to the following address:
NCDENR/ DWQ/ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
PART I, Page 5 of 9

Permit No. NCO024325
A.(5.) NUTRIENT ALLOCATIONS
(a.) The following table lists the Total Nitrogen (TN) and Total Phosphorus (TP) allocations assigned
to, acquired by, or transferred to the Permittee in accordance with the Jordan Lake nutrient
management rule (T15A NCAC 02B .0270) and the status of each as of permit issuance. For
compliance purposes, this table does not supersede any TN or'TP limit established elsewhere in
this permit or in the NPDES permit of a compliance association of which the Permittee is a Co-
Permittee Member.
Total Nitrogen Allocation
ALLOCATION AMOUNT,. ,-'
ALLOCATION
TYPE`'.
SOURCE
DATE
STATUS
Delivered
Discharge
Base
Assigned by Rule
8/11/09
110,698
257,438
Active
(T15A NCAC 02B .0270)
TOTAL
-110,698
257,438
Active
Footnote:
1 Nitrogen Transport Factor = 43%
Total Phosphorus Allocation
"
ALLOCATION AMOUNT
ALLOCATION.
TYPE
SOURCE
DATE
STATUS
Delivered
Discharge
(lb/yr).: ,.
(lb/yr)
Base
Assigned by Rule
8/11/09
13,591
32,359
Active
(T15A NCAC 02B .0270)
TOTAL
13,591
32,359
1Active
Footnote:
1 Phosphorus Transport Factor = 42%
(b.) Any addition, deletion, or modification of the active allocation(s) listed above (other than to
correct typographical errors) or any change of allocation to 'active' status shall be considered a
major modification of this permit and shall be subject to the public review process afforded such
modifications under state and federal rules.
PART I, Page 6 of 9

Permit No. NCO024325 • .
A.(6.) ANNUAL LIMITS FOR TOTAL NITROGEN AND TOTAL PHOSPHORUS
(a.) Total Nitrogen (TN) and Total Phosphorus (TP) allocations and load limits for NPDES
dischargers in the Jordan Lake watershed are annual loads and apply on a calendar year basis.
(b.) For any given calendar year, the Permittee shall be in compliance with the annual TN (or TP)
Discharge Load limit in this Permit if:
(i.) the Permittee's annual TN (or TP) Discharge Load is not greater than the effective limit, or
(ii.) the Permittee is a Co-Permittee Member of a compliance association.
(c.) The TN (or TP) limit in this Permit may be modified as the result of allowable changes in the
Permittee's allocation.
(i.) Allowable changes include those resulting from purchase of TN (or TP) allocation from an
authorized -mitigation banker, -the Ecosystem -Enhancement Program, or -other source- -- -
allowed under applicable regulations; purchase, sale, trade, or lease of allocation between
the Permittee and other dischargers; regionalization; and other transactions approved by
the Division.
(ii.) The Permittee may request a modification of the TN (or TP) limit in this Permit to reflect
allowable changes in its allocation(s).
(A) Upon receipt of timely and proper application, the Division will modify the permit as
appropriate and in accordance with state and federal program requirements.
($) Changes in TN (or TP) limits become effective on January 1 of the year following
permit modification. The Division must receive application no later than August 31
for changes proposed for the following calendar year.
(iii.) Any requests for modification should be sent to:
NCDENR/ DWQ/ NPDES Programs
Attn: Jordan Lake Watershed Coordinator
1617 Mail Service Center
Raleigh, NC 27699-1617
(d.) If the Permittee is a member and co-permittee of an approved compliance association on January
1 of a given year, its TN and TP discharges during that year are governed by that association's
group NPDES permit and the limits therein.
(i.) The Permittee shall be considered a Co-Permittee Member for any given calendar year in
which it is identified as such in Appendix A of the association's group NPDES permit.
(ii.) Association roster(s) and members' TN and TP allocations will be updated annually and in
accordance with state and federal program requirements.
(iii.) If the Permittee intends to join or leave a compliance association, the Division must be
notified of the proposed action in accordance with the procedures defined in the
association's NPDES permit.
(A) Upon receipt of timely, and proper notification, the Division will modify the permit as
appropriate and in accordance with state and federal program requirements.
(B) Membership changes in a compliance association become effective on January 1 of the
year following modification of the association's permit.
(e.) The TN and TP monitoring and reporting requirements in this Permit remain in effect
throughout the term of the Permit and are not affected by the Permittee's membership in a
compliance association.
PART I, Page 7 of 9

Permit No. NCO024325
A.(7.) CALCULATION AND REPORTING OF NUTRIENT LOADS
The Permittee shall calculate and report monthly and annual nutrient loads for the T.Z. Osborne
(NC0047384) and North Buffalo Creek (NC0025325) WWTPs as follows:
(a.) Calculation of Discharge Loads: The Permittee. shall calculate monthly and annual discharge
loads for each facility as follows:
(i.) Monthly Discharge Load (lb/mo, TN or TP) = TN (or TP) x TMF x 8.34
where:
TN (or TP)
TMF
8.34
= the average Total Nitrogen (or Total Phosphorus) concentration
.(mg/L) of the composite samples collected during the month
= the Total Monthly Flow of wastewater discharged during the
------month (MG/mo)- -- - --- ------ - -- ------ -
= conversion factor, from (mg/L x MG) to pounds
(ii.) Annual Discharge Load (lb/yr, TN or TP) = Sum of the 12 Monthly TN (or TP) Loads for
the calendar year
(b.) Calculation of Delivered Loads:
(i.) The Permittee shall calculate delivered loads as follows:
(A) Individual, Annual Delivered Load (lb/yr, TN or TP) =
Annual Discharge Load (lb/yr, TN or TP) x TF
where TF = Transport Factor, as follows:
PERMIT
FACILITY
TFTN
TFTP
NCO047384
T.Z. Osborne WWTP
45%
44%
.N00024325
North Buffalo Creek WWTP.
43%
42%
(A) Combined Annual Delivered Load (lb/yr) = Sum of the facilities' Individual Annual
Delivered TN (or TP) Loads for the calendar year
(c.) Reporting of Nutrient Discharges: The Permittee shall report each facility's monthly TN and TP
discharge loads in that facility's discharge monitoring report.
(d.) Reporting of Combined Delivered Loads: The Permittee shall report each calendar year's
combined delivered loads with the T.Z. Osborne WWTP's December report for that year and
shall append the report with a summary of monthly loads and calculations.
PART I, Page 8 of 9

Permit No. NC0024325-
EMS
.
P.M 10
+:....:tee.
-
PART I, Page 9 of 9

Mickey, Mike
From: Robertson, Seth
Sent: Friday, November 04, 2011 2:43 PM
To: Mickey, Mike
Subject: RE: Decommissioning?
Mike,
Sorry for the delay in responding. As far as I know we have never had any specific guidance for
decommissioning plants. We have always referred people to the local Regional Office with the thought that in
many cases the appropriate work would be site specific. My only additional recommendation would be to
require them to disconnect tankage piping and to address any potential safety issues with the abandoned
equipment/tankage. Let me know if I can provide any additional assistance.
Thanks,
Seth
From: Mickey, Mike
Sent: Friday, October 28, 2011 3:18 PM
To: Robertson, Seth
Subject: Decommissioning?
Hi Seth — Is there any guidance for decommissioning a 16.0 MGD POTW besides removing all sludge and wastewater?
Thanks, Mike.
Mike Mickey
Mike. MickevPNCDENR.eov
NC Division of Water Quality
585 Waughtown Street
Winston-Salem, NC 27107
Phone: [phone]
FAX: [phone]
E-mail correspondence to and from this address maybe subject to the North
Carolina Public Records Law and may be disclosed to third parties.

Division of Water Quality
May 9, 2011
MEMORANDUM
To: Corey Basinger
Surface Water Protection,
WSRO
Through: Cindy A. Moore l,G'
Supervisor, Aquatic Toxicology Unit
From: Carol Hollenkamp
Quality Assurance f icer, Aquatic Toxicology Unit
Subject: Whole effluent toxicity test results
Greensboro N. Buffalo Creek WWTP
NPDES Permit 9 NCO024325/001
Guilford County
The aquatic toxicity test using flow proportional composite samples of effluent discharged from Greensboro
N. Buffalo Creek WWTP has been completed. Greensboro N. Buffalo Creek WWTP has an effluent
discharge permitted that is 16.0 million gallons per day (MGD) entering North Buffalo Creek (7Q10 of 0.9
CFS). Whole effluent samples were collected on April 26 and April 28 by Jenifer Carter and facility
representative Alicia Goots for use in a chronic Ceriodaphnia dubia multiple -dilution toxicity test. The test
using these samples passed with a chronic value (ChV) of >100% which is greater than the 90% whole
effluent toxicity limit for this facility. Toxicity test information follows.
Test Type
Test Concentrations
Test Result
Control Survival
Control Mean Reproduction
Test Treatment Survival
Treatment Mean Reproduction
First Sample pH
First Sample Conductivity
First Sample Total Residual Chlorine
Second Sample pH
Second Sample Conductivity
Second Sample Total Residual Chlorine
3-Brood Ceriodaphnia dubia chronic multiple dilution
0, 22.5, 45, 75, 90, 100% sample'
ChV =>100%
100%
21.2 neonates
100%
20.0 neonates at 100% test concentration
7.01 SU
445 micromhos/cm
<0.1 mg/L
7.03 SU
459 micromhos/cm
<0.1 mg/L
Test results for the above samples indicate that the effluent would not be predicted to have water quality
impacts on receiving water. These samples were split and sent to Meritech, Inc. The chronic multiple
dilution test run by Meritech resulted in a ChV of 94.9%. The No Observed Effect Concentration (NOEC)
of these tests are within one test concentration of each other, which is within the acceptable guidelines for
assessing split test comparability. Please contact us if further effluent toxicity monitoring is desired. We
may be reached at [phone].
Basin: CPF02
cc: Central Files
Jenifer Carter, WSRO
Aquatic ToxicoloV Unit Environmental Sciences Section

.c ,
y AN A
®Q
MCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director
26 June 2009 Secretary
Mr. Allan Williams
Director of Water Resources
City of Greensboro
PO Box 3136
Greensboro, NC 27402-3136
SUBJECT: Compliance Evaluation Inspection
City of Greensboro — North Buffalo WWTP
NPDES Permit No. NCO024325
Guilford County
Dear Mr. Williams:
A Compliance Evaluation Inspection (CEI) was performed on the City of Greensboro North Buffalo wastewater treatment
plant on Wednesday, June 24, 2009 by Corey Basinger of the Winston-Salem Regional Office. Ed Osborne, Wally Kling
and Martie Groome represented the City for the inspection. The inspection consisted of two parts: an on -site inspection of
the treatment facility and a file review. The following are the fmdings from the subject inspection.
I. Permit
The NPDES permit for the City of Greensboro North Buffalo WWTP became effective February 1, 2007 and expires on
June 30, 2011. The permitted components of the wastewater treatment plant include: mechanical bar screens, influent flow .
measurement (parshall flume), aerated grit, removal, four primary settling tanks, and a 6 MGD flow transfer pump station to
TZ Osborne WWTP. Oritinal Train consists of two trickling filters, activated sludge with nitrification (4 aeration basins
with fine bubble diffusers), step feed process (optional), chemical addition for phosphorus removal, and five secondary
clarifiers. #2 Train consists of activated sludge with nitrification and two secondary clarifiers. The flow from the two
separate trains come together and continue through the following treatment processes: four tertiary sand filters, effluent
flow measurement (parshall flume), chlorination and effluent aeration. Primary and waste activated sludge is pumped from
the City of Greensboro North Buffalo WWTP to the T.Z Osborne WWTP for dewatering and incineration.
II. Records/Reports
A review of the laboratory reports and Discharge Monitoring Reports (DMRs) for the City of Greensboro North Buffalo
WWTP revealed no discrepancy between the generated data and the data submitted to DWQ. A copy of the DMR is kept
on file at the wastewater plant. Maintenance records were deemed compliant with permit conditions. Operations records
include all sample analyses and process control tests that are performed daily. Calibration records for field parameters (pH,
DO, and Temp), as well as flow meter calibration records, were evaluated and deemed compliant. The records/reports
were very comprehensive and well organized.
III. Facility Site Review
On the date of inspection, the treatment system consisted of influent flow measurement, new transfer pump station to TZ
Osborne WWTP, five (5) mechanical bar screens, grit removal, four (4) primary clarifiers, four (4) activated sludge tanks
with nitrification, five (5) secondary clarifiers, four (4) tertiary sand filters, chlorination, and step post aeration. Primary
and waste activated sludge is pumped from the City of Greensboro North Buffalo WWTP to the T.Z Osborne WWTP for
dewatering and incineration.
The following units were out of service on the date of inspection: (2) bar screens, (2) primary clarifiers, trickling filters, #3
final clarifier, (1) thickener, #1 grit unit.
North Carolina Division of Water Quality, Winston-Salem Regional Office
Location: 585 Waughtown St. Winston-Salem, North Carolina 27107 One
Phone: [phone] FAX: [phone] Customer Service: 1-877-623-6748 NOrthCarOlina
Internet: www.ncwaterquality.org
An Equal Opportunity \Affirmative Action Employer 6i P aAmallY

.'V
Mr. Allan Williams
26 June 2009
Page 2 of 3
IV. Effluent / Receivine Stream
The WWTP discharges to North Buffalo Creek (Class C-NSW in the Cape Fear River Basin). The receiving waters
appeared clear of solids and debris on the date of the subject inspection. There was no evidence of any previous bypasses.
V. Flow Measurement
Effluent flow is measured using a Parshall flume in conjunction with a Milltronics II Open Channel Monitor ultrasonic flow
meter, flow recorder, and totalizer. The flow meter is calibrated by WWTP staff by comparing it to the gauge reading and
then adjusting the meter accordingly. The flow meter is electronically calibrated at least once a year. The most recent
calibration was conducted in June 2009.
VI. Self -Monitoring Program
All monitoring was performed in compliance with the NPDES Permit No. NC0024325. Effluent limitation violations
occurring during the review period of August 2008 through March 2009 have been addressed via prior. correspondence
from the Division.
All upstream and downstream sampling and monitoring is performed by the Upper Cape Fear River Basin Association.
VII. Compliance Schedules
The facility has twenty-four (24) months from the effective date of the permit to comply with the new Total Residual
Chlorine effluent limitation of 17 ug/l. Please remember to continue to report the actual value on the DRM but for
compliance purposes, values less than 50ug/1 will be considered compliant.
VIII. Laboratory
All of the sample analyses are conducted by the City of Greensboro Laboratory and Meritech, Inc.
IX. Operations and Maintenance
Operations and maintenance at the time of the subject inspection were deemed satisfactory. Equipment operations are
monitored using a SCADA system. Routine maintenance is performed and documented for all components of the
wastewater system. Operations and Maintenance logs were very comprehensive.
X. Sludge Utilization/Disposal
Waste activated sludge is pumped to the City of Greensboro T.Z. Osborne WWTP for dewatering and incineration.
XI. Pretreatment
The City has an approved pretreatment program that is evaluated separately from this inspection.
XII. Stormwater
The City of Greensboro North Buffalo WWTP has a general stormwater permit for the municipal wastewater treatment
plant. The certificate of coverage is number NCG110004. The required Stormwater Pollution Prevention Plan was
available at the wastewater plant. The required monitoring had been performed semi-annually as required by the permit.
XIII. Sewer Overflow, Pollution Prevention & Multimedia
Not evaluated during this inspection.

Mr. Allan Williams
26 June 2009
Page 3 of 3
XIV. Other
The previous inspection was conducted by Corey Basinger on August 20-21, 2008. The back-up ORCs are James
Burroughs and Wally Kling.
If you have any questions or concerns regarding this report, please contact Corey Basinger at 336-771-4963.
Sincerely,
Steve W. Tedder
Water Quality Supervisor
Cc: Ed Osborne, PO Box 3136, G'boro, NC 27402
Don Howard, City of Greensboro, PO Box 3136, G'boro, NC 27402
Martie Groome, City of Greensboro, PO Box 3136, G'boro, NC 27402
Guilford County Health Department
Central Files
t-'R®

Form Approved
OMB No.2040-0057
Approval Expires
8-31-98
United States Environmental Protection Agency WashinLyton_ D.C._ 20460
Section A: National Data System Coding
Transaction Code NPDES No. Yr/Mo/Day Inspection Type Inspector FacilityType
N 5 NCO024325 09-06-24 C S 1
Facility Evaluation Rating BI QA ..........Reserved...........
5 N N
Section B: Facility Data
Name and Location of Facility Inspected:
Entry Time:
Permit Effective
0830 hrs.
Date: Feb 1, 2007
City of Greensboro — North Buffalo
Wastewater Treatment Plant
Exit Time:
Permit Expiration
Date: June 30, 2011
Name(s) of On -Site Representative(s): Title(s): Phone No(s):
Mr. Ed Osborne ORC [phone]
Mr. Wally Kling Back-up ORC [phone]
Ms. Martie Groome Laboratory Supervisor [phone]
Name, Address of Responsible Official:
Title: Director of Water Resources
Mr. Allan Williams
City of Greensboro
Phone No. 336-373-2055
Contacted? No
PO Box 3136
Greensboro, NC 27402
Section C: Areas Evaluated During Inspection
o Permit • Flow Measurement • Operations/Maintenance
s Records/Reports • Self -Monitoring Program a Sludge Handling/Disposal
e Facility Site Review • Effluent/Receiving Waters e Stormwater
Section D: Summary of Findings/Comments
Permit..................................Current permit expires June 30, 2011.
Records/Reports ..................The operators daily records are maintained as per permit conditions.
Facility Site Review ............ All system components were operating properly. See Item III of cover letter for further details.
Effluent/Receiving Waters.. Effluent was clear and free of solids/debris/excessive foam on date of inspection.
Flow Measurement..............No problems noted
Self -Monitoring Program .... The DMR's are submitted as required by NPDES permit
Operations/Maintenance ..... No problems were noted with respect to operations and maintenance.
Sludge Disposal ..................Solids are sent to TZ Osborne to be incinerated.
(SEE DATA SUMMARY ATTACHED FOR THE PERIOD 08/08 - 03/09)
Name(s) and Signature(s) of Inspectors:
Agency/Office/Telephone:
Date:
DWQ / WSRO / [phone]
Signature of Revie r:
Agency/Office:
Date:
DWQ / WSRO / [phone]
v

Permit: NCO024325
Inspection Date: 06/24/2009
Owner - Facility: North Buffalo Creek WWTP
Inspection Type: Compliance Evaluation
Operations & Maintenance Yes No NA NE
Is the plant generally clean with acceptable housekeeping? ®❑ ❑ ❑
Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable Solids, pH, DO, Sludge ■ ❑ ❑ ❑
Judge, and other that are applicable?
Comment:
Ll- \IA \IC
(If the present permit expires in 6 months or less). Has the permittee submitted a new application?
❑
❑
■
Cl
Is the facility as described in the permit?
■
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# Are there any special conditions for the permit?
❑
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Is access to the plant site restricted to the general public?
■
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Is the inspector granted access to all areas for inspection?
■
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Comment:
Record Keeping
Yes
No
NA
NE
Are records kept and maintained as required by the permit?
■
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Is all required information readily available, complete and current?
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Are all records maintained for 3 years (lab. reg. required 5 years)?
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Cl
Are analytical results consistent with data reported on DMRs?
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Is the chain -of -custody complete?
■
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Dates, times and location of sampling
Name of individual performing the sampling
■
Results of analysis and calibration
■
Dates of analysis
■
Name of person performing analyses
■
Transported COCs
■
Are DMRs complete: do they include all permit parameters?
■
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Has the facility submitted its annual compliance report to users and DWQ?
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(If the facility is = or > 5 MGD permitted flow) Do they operate 24/7 with a certified operator on each shift?
■
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Cl
Is the ORC visitation log available and current?
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Is the ORC certified at grade equal to or higher than the facility classification?
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Is the backup operator certified at one grade less or greater than the facility classification?
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Is a copy of the current NPDES permit available on site?
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Cl
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Page # 3

Permit: NC0024325
Inspection Date: 06/24/2009
Bar Screens
a
Type of bar screen
a.Manual
b.Mechanical
Are the bars adequately screening debris?
Is the screen free of excessive debris?
Is disposal of screening in compliance?
Is the unit in good condition?
Comment: 2 bar screens out permanently
Grit Removal
Type of grit removal
a.Manual
b.Mechanical
Owner - Facility: North Buffalo Creek VWVTP
Inspection Type: Compliance Evaluation
Is the grit free of excessive organic matter?
Is the grit free of excessive odor?
# Is disposal of grit in compliance?
Comment: #1 grit out for service/maintenance
Primary Clarifier
Is the clarifier free of black and odorous wastewater?
Is the site free of excessive buildup of solids in center well of circular clarifier?
Are weirs level?
Is the site free of weir blockage?
Is the site free of evidence of short-circuiting?
Is scum removal adequate?
Is the site free of excessive floating sludge?
Is the drive unit operational?
Is the sludge blanket level acceptable?
Is the sludge blanket level acceptable? (Approximately % of the sidewall depth)
Comment: 2 primary tanks out for service/maintenance
Secondary Clarifier
Is the clarifier free of black and odorous wastewater?
Yes No NA NE
■
■ ❑ ❑ ❑
■ ❑ ❑ ❑
■❑❑❑
Page # 5

Permit: NCO024325
Inspection Date: 06/24/2009
Aeration Basins
Is the DO level acceptable?(1.0 to 3.0 mg/1)
Comment:
Filtration (High Rate Tertiary) ;
Type of operation:
Is the filter media present?
Is the filter surface free of clogging?
Owner - Facility: North Buffalo Creek WWTP
Inspection Type: Compliance Evaluation
Is the filter free of growth?
Is the air scour operational?
Is the scouring acceptable?
Is the clear well free of excessive solids and filter media?
Comment:
Standby Power
Is automatically activated standby power available?
Is the generator tested by interrupting primary power source?
Is the generator tested under load?
Was generator tested & operational during the inspection?
Do the generator(s) have adequate capacity to operate the entire wastewater site?
Is there an emergency agreement with a fuel vendor for extended run on back-up power?
Is the generator fuel level monitored?
Comment:
Pumps-RAS-WAS
Are pumps in place?
Are pumps operational?
Are there adequate spare parts and supplies on site?
Comment:
Influent Sampling
# Is composite sampling flow proportional?
Is sample collected above side streams?
Is proper volume collected?
Is the tubing clean?
■ ❑ ❑ ❑
Down flow
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Page # 7

7-AA
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
10 August 2009
Mr. Allan Williams
Director of Water Resources
City of Greensboro
PO Box 3136
Greensboro, NC 27406
SUBJECT: Notice of Violation - Effluent Limitations
NOV-2009-LV-0358
City of Greensboro — North Buffalo WWTP
NPDES No. NCO024325
Guilford County
Mr. Williams:
Review of the self -monitoring report for the month of May 2009 revealed the following daily
maximum effluent limit violation:
Date
Parameter
Permit Limit
Reported Value
Units
5/15
Total Mercury
0.012 ug/l
0.0389
ug/l
Remedial actions, if not already implemented, should be taken to correct the above noncompliance
problem(s). Please be aware that violations of your NPDES permit could subject you to enforcement
action by the Division with the possible assessment of civil penalties of up to $25,000 per day, per
violation, Should you have any questions, please contact this Office at [phone],
Sincerely,
Steve W. Tedder
Water Quality Supervisor
cc: WSRO, Central Files
Guilford County Health Dept.
North Carolina Division of Water Quality, Winston-Salem Regional Office
Location: 585 Waughtown St. Winston-Salem, North Carolina 27107
Phone: [phone] FAX: [phone] Customer Service: 1-877-623-6748
Internet: www.ncwaterquality.org
An Equal Oppoitunity 1 Affirmative Action Employer
One
Noi!hCarolina
atmratlff

i
INC ENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
9 April 2009
Mr. Allan Williams
Director of Water Resources
City of Greensboro
PO Box 3136
Greensboro, NC 27406
SUBJECT: -Notice of Violation - Effluent Limitations
NOV-2009-LV-0164
City of Greensboro — North Buffalo WWTP
NPDES No: NCO024325
Guilford County
Mr. Williams:
Review of the self -monitoring report for the month of January 200.9 revealed the following daily
maximum effluent limit violation:
Date
Parameter
Permit Limit
Reported Value
Units
1/30
Total Residual Chlorine
50 ug/1
58
ug/1
Remedial actions, if not already implemented, should be taken to correct the above noncompliance
problem(s). Please be aware that violations of your NPDES permit could subject you to enforcement
action by the Division with the possible assessment of civil penalties of up to $25,000 per day, per
violation. Should you have any questions, please contact this Office at [phone].
Sincerely,
"(............
-
Steve W. Tedder
Water Quality Supervisor
cc: VSRO,, Central Files
Guilford County Health Dept.
North Carolina Division of Water Quality, Winston-Salem Regional Office
Location: 585 Waughtown St. Winston-Salem, North Carolina 27107
Phone: [phone] FAX: [phone] Customer Service: 1-877-623-6748
Internet: www.ncwaterquality.org
011E
NorthCarolina
An Equal Opportunity 1 Affirmative Action Employer

INTRODUCTION
Winston-Salem
Regional Office
The Clean Water Act of 1999 (House Bill 1160) requires all entities that own or
operate wastewater collection and treatment systems to make an annual report
available to their customers. The report must detail how a system operates, how
well it performed during the year, what violations occurred, and other information..
This report is produced in compliance with these requirements and covers the
calendar year January - December 2009.
The City of Greensboro -Water Resources Department operates two water
reclamation plants _and a sewage collection system that collects and transports
the sewage to these two plants; some transfer of sewage occurs between the two
plants. Following are the professionals designated by the state as the "Operators
in Responsible Charge" (ORC) of the respective systems and permits for the
systems:
North Buffalo Water Reclamation Facility
Permit No. ffiff230215 ORC Nathan Osborne, [phone]
T. Z. Osborne Water Reclamation Facility
Permit No. NC0047384, ORC Walter Kling, [phone]
Sewage Collection System
Permit No. WQCS00006
ORC Brian Foust, [phone]
ORC Patrick Smith, [phone]
This report is being made available at all City Water Resources Facilities, Libraries,
the Melvin Municipal Office Building, and on the City's web site. All customers will
be notified of its availability in the At Your Service newsletter, that are distributed in
water and sewer bills from March to May 2010. This report has been compiled by
staff of the Water Resources Department and its approximate cost
The information contained herein is
accurate to the degree possibl .
FEB 19 201
Allan E. Williams, Director of Water Resources

System overview
The sewage collection and water reclamation system of the City of Greensboro begins with approximately 100,997
_connections that serve homes, commercial establishments, and industries. Everyday an average of 29 million gallons
of sewage is generated in our homes and industries that must be collected, transported, and treated to very stringent
standards before it is released back into our environment (in our streams). This service is provided by the City's Water
Resources Department and is funded almost entirely from the user charges that are paid monthly by our customers.
Nearly all of the sewage or wastewater that is generated by customers flows by gravity through sewers that range from 6 to
72 inches in diameter. Greensboro operates over 1,396 miles of these gravity sewer lines. As the lines leave neighborhoods
they increase in size to accommodate the flows that are collected from the many areas that are served. These sewers
generally follow terrain to take advantage of gravity flow but at certain low points pumping stations are used to push the
flow uphill to the next drainage basin and set of lines. The City currently operates 47 pumping stations that range in capacity
from 30 to 2,600 gallons per minute.
Our sewer collection system transports Greensboro's wastewater to two large water reclamation facilities. The wastewater
is processed so that it can be returned to our streams with minimal environmental impact. The North Buffalo Facility and the
T.Z. Osborne Facility are permitted to process up to 16 and 40 million gallons of wastewater per day, respectively.
Both City water reclamation facilities are large, complex, plants that use physical, chemical, and biological processes to clean
the wastewater. It is screened and settled to remove most suspended materials, but the heart of the plant is a biological
process that uses bacterial cultures to remove the largest part of the suspended and dissolved wastes that are produced
within the city. This biological process, called activated sludge, is sensitive to temperature, high flows produced by rainfall
leaking into sewers, and toxic discharges that can be produced by industries or even homes. This sensitivity to factors largely
beyond the control of the operators of the plants makes them susceptible to process upsets that can result in discharging
constituents beyond the amount permitted by regulating authorities.
Aerial photo of T. Z. Osborne Plant
(located off of Huffine Mill Road)
Greensboro's Difficult Location
Aerial photo of North Buffalo Plant
(located off of White Street)
Many of Greensboro's residents recognize that our location is not ideal for
water supply development; our streams are very small because we are at
the top of the watershed where our streams drain limited amounts of land.
What they may not recognize is that this makes wastewater reclamation
very difficult as well. The permitting of treated wastewater discharges makes
the assumption that streamflow is at the lowest volume so as to offer the
protection needed when streamflow is at its lowest. In North Carolina, this
means the " 7 Q 10" flow; or the lowest seven day flow expected every ten
years. The permit limits for discharges takes this level of stream protection
into account in calculating the limits; yet it applies 24 hours per day, 7 days
per week, 365 days per year. Since Greensboro's limits are calculated for
discharging to such small streams, our limits are very low. Not only does North Aerial photo of Lake Townsend
Carolina.have,.some of the most stringent stream standards in the country, Greensboro is a large city located on'very
small -streams. Our discharge flow constitutes over 97% of the stream below our discharge points at the lowest stream -
flows; therefore our permits are written so as to protect the streams at all times as though such minimal flow was present.

i�
Treatment Plant Performance
The City of Greensboro's treatment plants operate under National Pollutant
Discharge Elimination System permits, most commonly known as NPDES.
These are highly complex permits that include monitoring requirements
and discharge limits, some of which vary from season to season and have
different maximums for daily values, weekly averages, monthly averages,
and quarterly averages. Some limits protect streams from oxygen depletion,
such as biochemical oxygen demand (BOD) and ammonia -nitrogen (which
exerts oxygen demand over a delayed yet prolonged basis). There are other
limits that work to protect aquatic life in the receiving stream such as metals
like cadmium or selenium or other constituents like fluoride or cyanide. These
constituents are limited as low as 12 parts per trillion and in many cases are
lower than drinking water standards, because aquatic life is more sensitive
than humans to these materials. One standard, fecal coliform, is designed to test for indicator bacteria to determine -
whether or not sufficient chemicals have been applied to disinfect the flow prior to discharge. The permits are complex
and can be viewed at our treatment plants upon request.
Compliance with these permits requires that our laboratory. must conduct over 10,500 tests per year. Any one of these tests
may result in a value that causes us to violate the limits of the NPDES permit. When a sample is taken at its specified time,
to even accidentally drop it or allow it to linger longer than permitted before refrigeration or analysis can result in a violation.
There are some limits, such as cyanide, fluoride, selenium, and cadmium, over which the operators of the treatment plant
have no control other than through regulating what industry and households
can discharge to the sewers.
During 2009 the Water Resources Department treated 10.8 billion gallons of
wastewater and returned it to our streams. We are proud of the outstanding
performance of these facilities that was made possible by the dedicated
efforts of the professionals who operate, maintain, and conduct tests for these
facilities. However, despite these efforts we reported the following violations of
the NPDES permit to the state. Each and every one of these was reported to
the State of North Carolina in compliance with all reporting regulations and is
included at the end of this report as Table 1 (T. Z. Osborne) and Table 2 (North
Buffalo). There were no detected -environmental impacts from any of these
permit excursions.
Clean water returns to our streams
Collection System Performance
The City of Greensboro operates a sewage collection system comprised of 1;396 miles of gravity line, 33,245 manholes,
47 pump stations, and 74 miles of pressurized sewage force main. The system is subject to many rules and regulations
that are now in effect. Most notably, if sewage escapes from the collection system for whatever reason and exceeds
1,000 gallons, it must be reported to all outlets of the news media. In addition, all spills of any volume reaching a water
body must be reported to the State.
Sewage spills from a collection system can be caused by a number of reasons.
Tree roots can find their way into sewer lines obstructing them, grease from
residences or commercial establishments can collect in sewers and obstruct
them, foreign objects can be dropped in sewers or manholes, rainwater can find
its way into sewers overloading them, and pump stations can fail for mechanical
or electrical reasons. Greensboro, like all cities, has experienced these problems
in the last year of operation. A list of sewage spills in excess of 1,000 gallons
that reached surface waters is included at the end of this report and labeled
as Table 3. There were no detected environmental impacts from any of these
incidents.
Reserve Lift Station

ti
System Improvements
The City of Greensboro has -an on -going cleaning and inspection- program to monitor and maintain our sewer system,., --
including rodding, high pressure flushing, and closed circuit television inspection of lines. The City has an aggressive program
to rehabilitate old leaking sewer lines to begin reducing the amount of rainwater entering our collection system. The total
spending amount for rehabilitation exceeds $3 million per year.
We are also enhancing our regulation of grease discharge in those areas where we are experiencing grease buildup in lines.
While we maintain generators at many stations and can move mobile generators to the others, we are investigating the
installation of automatic backup at stations that experience repeat loss of power that cannot be restored quickly. It should be
noted that of the 10.8 billion gallons of sewage produced in Greensboro in 2008, 18,740 gallons escaped our system, which
is only 2 gallons per million transported.
The Water Resources Department is currently preparing to upgrade the City's two water reclamation plants to comply with
recently issued regulation, known as the "Jordan Lake Rules." The rules were issued to offer water quality protection to the
B. Everett Jordan Reservoir by reducing the amount of nutrients, specifically nitrogen and phosphorus, that enter streams
the empty to this water body. The rules impact development, current stormwater discharge methods, agriculture, and the
discharge of treated municipal wastewater. The new more stringent NPDES phosphorus limits were effective January 1, 2010
and the total nitrogen NPDES limits, which will require additional treatment processes will be effective January 1, 2016. The
City anticipated these requirements and began pilot testing cutting edge processes several years ago to find the most cost
effective way to meet the limits, which are effective January 1, 2016. Process decisions are being made, and it is anticipated
that construction will begin in early 2013. The improvements will cost approximately $75 million in capital expenses and will
increase operating costs as well. A rate increases of 10-20% for sewer charges can be expected for these improvements.
Fats, Oils and Grease (FOG) Program
It is the duty and responsibility of the City of Greensboro Water Resources Department to prevent the
excessive introduction of oil and grease into the sanitary sewer system and the wastewater treatment
plants. The FOG policy is designed to outline, implement and enforce oil and grease discharge rules and
to have an educational program for both residential and commercial users. This policy is applicable to
all food service establishments that discharge wastewater containing grease to the City of Greensboro
Sanitary Sewer System. In order to reduce sewer blockages, food service establishments discharging
wastewater that contains grease to the City of Greensboro sanitary sewer system must install and
maintain a grease trap or grease interceptor to prevent grease from entering the sewer system. The
FOG Mascot accumulation of grease within sanitary sewer lines increases the potential to create sewer blockages.
"Grease Gremlin" g ry p 9
Sanitary sewer blockages can result in sanitary sewer overflows (SSOs), which may reach the surface
waters of North Carolina.
Residential customers should also practice proper disposal of cooking grease by placing grease in sealed containers and
discarding in the garbage. By reducing the amount of fats, oils and grease that enter the sewer system, you can help to
protect the environment by preventing sewer back-ups and overflows. For more information please visit our website at
www.greensboro-nc.gov/water.
Summary
The Greensboro Water Resources Department is proud that given the capacity of our treatment plants and the age of our
collection system, our permit departures have been minimal, especially when compared to similar cities. We recognize
however, that in the changing climate of environmental concern, total compliance is demanded by the public.
WATER RESOURCES ADMINISTRATION: 336-373-2055
T. Z. OSBORNE WATER RECLAMATION FACILITY: 336-373-7740
NORTH BUFFALO WATERRECLAMATION FACILITY: 336-373-5913
Liou
GREENSBORO

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biJ. k�. R a,. _'-.,ter 4 _�° .3.+_.+. xr..x_� _t+:�... •��..._.1�Si5=�.tiu -i.w Vii'w_ �..S1a
",�1=.'�...d .. tai`..icw.w�'.?rr..yait-+.9S.l.S,%
-Daily
Weekly Average
Mo- . • -
- - • -
-Daily
s•. 4.^• r. .h—_ " �i.�.`.�"."a'+w.',r`e?q—rta "J+x'.�'.i*a't'�r 'R t''-'�i"f'fia .va*.'3`r:Y �"'t°""� a.-,f xdr,37
,,�." �`" d"�a'yk•
^ � •}+. ° q` ^d�f3 � it . sue, � ilR3pa. � t ... �Fi�t4
-` i�•rr�.�i'tAY';F'.:r°+l-i��
01
FY ;a
.....:,`�y La—
e.. �is_ 5.•�ti.`,:u`'r,.'b..•�..:a.h,�..
DailyMaximum
Note: There were no environmental impacts noted_for the above violations.
Definitions:
Daily Discharge — The "daily discharge" concentration comprises the mean concentration for a 24-
hour sampling period as either a composite sample concentration or the arithmetic mean of all grab
samples collected during that period.
Daily Maximum - The highest "daily discharge"
Weekly Average — The arithmetic mean of all "daily discharges" of a pollutant measured during the
calendar week.
Monthly Average — The arithmetic mean of all "daily discharges" of a pollutant measured during the
calendar month.

Volume
Permit
In°cident..,
.:R'eaching
Surface,Water.:
P:errinittee„.Nurnber.
..'irted:
Surf " ace:.Water,
' . Name :.
Locati®n °:: = . Probable",Causer
T.Z. Osborne
NC0047384
12/25/2009-
6,200 gallons
Rock Creek
6595 Judge Adams Rd
Pump Station Equipment
Failure
North Buffalo
NC0024325
12/18/2009
2,000 gallons
Little Alamance
6202 Technology Dr
Unknown substance blocking
Creek
line
North Buffalo
NC0024325
11/12/2009
1,200 gallons
g
North Buffalo
100 Block
Inflow &Infiltration
Creek #2
S. Aycock St
North Buffalo
NC0024325
11/12/2009
2,000 gallons
g
North Buffalo
4000 Block of
Inflow &Infiltration
Creek #1
Henderson Rd
North Buffalo
NC0024325
11/12/2009
2,000 gallons
North Buffalo
4100 Henderson Rd
Inflow & Infiltration
Creek #1
North Buffalo
NC0024325
11/11/2009
2,340 gallons
Lake Townsend
5403 Hollyridge Dr
Pipe Failure
Creek
(Break)
North Buffalo
NC0024325
04/29/2009
3,000 gallons
East Fork Deep
8735 W. Market St (O/F)
Paint discharged into sewer
River
system

NCDEHR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins
Governor Director
October 1, 2009
Mitchell Johnson, City Manager
City of Greensboro
PO Box 3136
Greensboro, North Carolina27402-3136
RECEIVED
N.C. Deot of ENR
OCT 0 5 2009
Winston-Salem
Regional Office
Dee Freeman
Secretary
Subject: Notification of Intent to Modify
NPDES Permits NCO047384 ar d NC002432S"3
to Incorporate Jordan Lake Nutrient Requirements
T.Z. Osborne and North Buffalo Creek WWTPs
Guilford County
Dear Mr, Johnson:
Governor Bev Perdue recently signed legislation to complete passage of rules for the Jordan Lake
Nutrient Management Strategy. The Strategy includes a Wastewater Discharge rule (T15A NCAC 02B
.0270) that applies to your wastewater treatment facilities. Pursuant to Sub -Item (6)(d) of that rule, I am
writing to notify you of (1) the nutrient allocations assigned to your facilities and (2) the Division of
Water Quality's intent to modify the subject NPDES permits to include nutrient limits as provided in
the rule. I also wish to remind you of other provisions of the rule that require your prompt attention.
This letter addresses only certain provisions of the Jordan Lake Wastewater Discharge rule. I encourage
you to familiarize yourself with the remainder of the rule.
Nutrient Allocations. The Wastewater Discharge rule establishes the maximum loads of nitrogen and
phosphorus that can be released from wastewater treatment facilities into the Jordan Lake watershed.
The rule specifies that these wasteload allocations are to be divided among the existing facilities in
proportion to their 2001 permitted flows (with certain exceptions).
Your facilities have been assigned nitrogen and phosphorus allocations. The allocations are expressed
as annual mass loadings delivered to the lake. Due to foreseeable losses between the discharge point
and the lake, they are also expressed as the equivalent discharge loads at the point of discharge. The
delivered and the corresponding discharge allocations assigned to the City of Burlington are as follows:
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604 One
Phone: [phone] FAX: [phone] Customer Service: 1-877-623-6748 NortliCarolina
Internet www.ncwaterquality.org %�, j�/j//
An Equal Opportunity 1 Affirmative Action Employer (/ Y atu � lly

Mitchell Johnson, City Manager
Notification of Intent to Modify
NPDES Permits NCO047384 and NCO024325
October 1, 2009
NCO047384 - T.Z. Osborne WWTP
NCO047384
Delivered Allocation
(lb/yr)
Transport
Factor (%)
Discharge Allocation
(lb/yr)
Total Nitrogen
289,618
45
643,595
Total Phosphorus
35,595
44
80,899
2001 Permitted Flow: 40 MGD (as defined in Wastewater Discharge rule)
NCO024325 - North Buffalo Creek WWTP
NCO024325
Delivered Allocation
(lb/yr)
Transport
Factor (%)
Discharge Allocation
(lb/yr)
Total Nitrogen
110,698
43
257,438
Total Phosphorus
13,591
42
32,359
2001 Permitted Flow: 16 MGD
Intent to Modffy Permit. The new rule specifies that facilities with permitted flows at or above 0.1
MGD, including yours, will be subject to effluent limits for nitrogen and phosphorus. The effluent
limits will equal the facility's discharge allocations. The new phosphorus limits become effective
beginning with calendar year 2010. Nitrogen limits become effective beginning with calendar year
2016.
It is the Division's intent to modify the affected permits by the end of 2009 to include the new
phosphorus limits. We will draft permit modifications for the affected facilities in the coming weeks.
As with any such permit action, the proposed modifications will be subject to public review, and we
will provide you with a copy of the draft permit at that time.
The Division will add nitrogen limits during the 2011 permit renewals, with a compliance date of 2016.
Process Optimization. The rule specifies that no later than six months after its effective date, each
discharger with a permitted flow greater than or equal to 0.5 MGD must "evaluate its treatment
facilities and operations and identify further opportunities to improve and minimize nitrogen
reduction in the existing facilities...; and submit a report to the Division documenting its findings,
proposing optimization measures, and describing expected results."
Please provide three copies of your report to the Division at the following address no later than
February 11, 2010:
Division of Water Quality
Surface Water Protection Section, Point Source Branch
Attn: Jordan Lake Coordinator
1617 Mail Service Center
Raleigh, NC 20699-1617
2

Mitchell Johnson, City Manager
Notification of Intent to Modify
NPDES Permits NCO047384 and NCO024325
October 1, 2009
Each discharger must implement the proposed measures no later than six months after the Division
accepts the report and continue until such time as the facility is upgraded for nitrogen removal. The
affected dischargers must also submit annual progress report to the Division for a period of five years.
If you have any questions regarding these requirements, please contact Mike Templeton at (919) 807-
6402 or at [e-mail].
Sincerely,
Coalen . u
cc: Allan Williams, Director of Water Resources - 2199 White Street, Greensboro, NC 27405
sWinston-Salein:Regi6hiir Office
NDPES Files
Central Files
3

INTRODUCTION
The Clean Water Act of 1999 (House Bill 1160) requires all entities that own or
operate wastewater collection and treatment systems to make an annual report
available to their customers. The report must detail how a system operates, how
well it performed during the year, what violations occurred, and other information.
This report is produced in compliance with these requirements and covers the
calendar year January - December 2008.
The City of Greensboro Water Resources Department operates two water
reclamation plants and a sewage collection system that collects and transports
the sewage to these two plants; some transfer of sewage occurs between the two
plants. Following are the professionals designated by the state as the "Operators
in Responsible Charge" (ORC) of the respective systems and permits for the
systems:
North Buffalo Water Reclamation Facility
Permit No. NC0024325, ORC Nathan Osborne, [phone]
T. Z. Osborne Water Reclamation Facility
Permit No. NC0047384, ORC Walter Kling, [phone]
Sewage Collection System
Permit No. WQCS00006
ORC Brian Foust, [phone]
ORC Emory Stewart, [phone]
This report is being made available at all City Water Resources Facilities, Libraries,
the Melvin Municipal Office Building, and on the City's web site. All customers will
be notified of its availability by a printed notice in water and sewer bills that are
generated from April to June 2009. This report has been compiled by staff of the
Water Resources Department and its approximate cost was $1,000.
The information contained herein is accurate to.the degree possible:
Allan E. Williams, Director of Water Resources

rA
System Overview
The sewage collection and water reclamation system oMhe City of Greensboro begins with approximately 100,817
connections that serve homes, commercial establishments, and industries. Every day an average of 29 million gallons
of sewage is generated in our homes and industries that must be collected, transported, and treated to very stringent
standards before it is released back into our environment (in our streams).This service is provided by the City's Water
Resources Department and is funded almost entirely from the user charges that are paid monthly by our customers.
Nearly all of the sewage or wastewater that is generated by customers flows by gravity through sewers that range from 6 to
72 inches in diameter. Greensboro operates over 1,389 miles of these gravity sewer lines. As the lines leave neighborhoods
they increase in size to accommodate the flows that are collected from the many areas that are served. These sewers
generally follow terrain to take advantage of gravity flow but at certain low points pumping stations are used to push the
flow uphill to the next drainage basin and set of lines. The City currently operates 49 pumping stations that range in capacity
from 30 to 2,600 gallons per minute.
Our sewer collection system transports Greensboro's wastewater to two large water reclamation facilities. The wastewater
is processed so that it can be returned to our streams with minimal environmental impact. The North Buffalo Facility and the
T.Z. Osborne Facility are permitted to process up to 16 and 40 million gallons of wastewater per day, respectively.
Both City water reclamation facilities are large, complex, plants that use physical, chemical, and biological processes to clean
the wastewater. It is screened and settled to remove most suspended materials, but the heart of the plant is a biological
process that uses bacterial cultures to remove the largest part of the suspended and dissolved wastes that are produced
within the city. This biological process, called activated sludge, is sensitive to temperature, high flows produced by rainfall
leaking into sewers, and toxic discharges that can be produced by industries or even homes. This sensitivity to factors largely
beyond the control of the operators of the plants makes them susceptible to process upsets that can result in discharging
constituents beyond the amount permitted by regulating authorities.
T. Z. Osborne Plant
(located off of Huffine Mill Road)
Greensboro's Difficult Location
Many of Greensboro's residents recognize that our location is not ideal for
water supply development; our streams are very small because we are at the
"top" of the watershed where our streams drain limited amounts of land. What
they do not recognize is that this makes wastewater reclamation very difficult
also. The permitting of treated wastewater discharges makes the assumption
that streamflow is at the lowest volume so as to offer the protection needed
when streamflow is at its lowest. In North Carolina, this means the 7 Q 10
flow, or the lowest seven day flow expected every ten years. The permit limits
for discharges takes this level of stream protection into account in calculating
the limits; yet it applies 24 hours per day, 7 days per week, 365 days per
year. Since Greensboro's limits are calculated for discharging to such small
streams, our limits are very low. Not only does North Carolina have some of
the most stringent stream standards in the country, Greensboro is a large city Lake Townsend
located on very small streams. Our discharge flow constitutes over 97% of the stream below our discharge points at the
lowest stream -flows; therefore our permits are written so as to protect the streams at all times as though such minimal
flow was present.
North Buffalo Plant
(located off of White Street)

it
Treatment Plant Performance
The City of Greensboro's treatment plants operate under Nationat Pollutant
Discharge Elimination System permits, most commonly known as NPDES.
These are highly complex permits that include monitoring requirements
and discharge limits, some of which vary from season to season and have
different maximums for daily values, weekly averages, monthly averages,
and quarterly averages. Some limits protect streams from oxygen depletion,
such as biochemical oxygen demand (BOD) and ammonia -nitrogen (which
exerts oxygen demand over a delayed yet prolonged basis). There are other
limits that work to protect aquatic life in the receiving stream such as metals
like cadmium or selenium or other constituents like fluoride -or cyanide. These
constituents are limited as low as 2.0 parts per billion and in many cases are i.
lower than drinking water standards, because aquatic life is more sensitive
than humans to these materials. One standard, fecal coliform, is designed to test for indicator bacteria to determine
whether or not sufficient chemicals have been applied to disinfect the flow prior to discharge. The permits are complex
and can be viewed at our treatment plants upon request.
Compliance with these permits requires that our laboratory must conduct over 10,500 tests per year. Any one of these tests
may result in a value that causes us to violate the limits of the NPDES permit. When a sample is.taken at its specified time,
to even accidentally drop it or allow it to linger longer than permitted before refrigeration or analysis can result in a violation.
There are some limits, such as cyanide, fluoride, selenium, and cadmium, over which the operators of the treatment plant
have no control other than through regulating what industry and households
can discharge to the sewers.
During 2008 the Water Resources Department treated 10.5 billion gallons of
wastewater and returned it to our streams. We are proud of the outstanding
performance. of these facilities that was made possible by the dedicated efforts
of the professionals who operate, maintain, and conduct tests for these facilities.
However, despite these efforts we reported the following violations of the NPDES
permit to the state. Each and every one of these was reported to the State of
North Carolina in compliance with all reporting regulations and is included at the
end of this report as Table 1 (T. Z. Osborne) and Table 2 (North Buffalo). There
were no detected environmental impacts from any of these permit excursions.
Clean water returns
to our streams
Collection System Performance
The City of Greensboro operates a sewage collection system comprised of 1,389 miles of gravity line, 33,085 manholes,
49 pump stations, and 75.2 miles of pressurized sewage force main. The system is subject to many rules and regulations
that are now in effect. Most notably, if sewage escapes -from the collection system for whatever reason and exceeds
1,000 gallons, it must be reported to all outlets of the news media. In addition, all spills of any volume reaching a water
body must be reported to the State.
Sewage spills from a collection system can be caused by a number of reasons.
Tree roots can find their way into sewer lines obstructing them, grease from
residences or commercial establishments can collect in sewers and obstruct
them, foreign objects can be dropped in sewers or manholes, rainwater can find
its way into sewers overloading them, and pump stations can fail for mechanical
or electrical reasons. Greensboro, like all cities, has experienced these problems
in the last year of operation. A list of sewage spills in excess of 1,000 gallons
that reached surface waters is included at the end of this report as Table 3.
There were no detected environmental impacts from any of these incidents.
Kenneth Road Pump Station

r.A
114
System Improvements
The City of Greensboro has an on -going cleaning and inspection program
to monitor and maintain our sewer system, including rodding, high pressure
flushing, and closed circuit television inspection of lines. The City has an
aggressive program to rehabilitate old leaking sewer lines to begin reducing
the amount of rainwater entering our collection system. Spending for rehab
exceeds $3 million per year.
We are also enhancing our regulation of grease discharge in those areas where
we are experiencing grease buildup in lines. While we maintain generators
at many stations and can move mobile generators to the others, we are
investigating the installation of automatic backup at stations that experience
repeat loss of power that cannot be restored quickly. It should be noted that
of the 10.5 billion gallons of sewage produced in Greensboro in 2008, 323,600
gallons escaped our system, which is only 31 gallons per million transported.
Sewer Line Rehabilitation Procedure
known as "sliplining"
We addressed the problem of sewer overflows in the Latham Park and Lake Daniel areas, by completing the North Buffalo
Sanitary Sewer Project in April 2008. The project included installation of over nine miles of pipe, the construction of a new
pump station, and a force main that diverts flow from our near capacity North Buffalo treatment facility, to the upgraded
South Buffalo system.
Fats, Oils and Grease (FOG) Program
It is the duty and responsibility of the City of Greensboro Water Resources Department to prevent the
excessive introduction of oil and grease into the sanitary sewer system and the wastewater treatment
plants. This policy is designed to outline, implement and enforce oil and grease discharge rules and to
have an educational program for both residential and commercial users. This policy is applicable to all
"Food Service Establishments" that discharge wastewater containing grease to the City of Greensboro
Sanitary Sewer System. In order to reduce sewer blockages, Food Service Establishments discharging
wastewater that contains grease to the City of Greensboro sanitary sewer system must install and
FOG Mascot maintain a grease trap or grease interceptor to prevent grease from entering the sewers stem. The
"Grease Gremlin" 9 P 9 P P 9 9 Y
accumulation of grease within sanitary sewer lines increases*the potential to create sewer blockages.
Sanitary sewer blockages can result in sanitary sewer overflows (SSOs), which may reach the surface
waters of North Carolina.
Residential customers should also practice proper disposal of cooking grease by placing grease in sealed containers and
discarding in the garbage. By reducing the amount of fats; oils and grease that enter the sewer system from homes and
businesses, you can help to protect the environment by preventing sewer back-ups and overflows. For more information
please visit our website at www.greensboro-nc.gov/Water.
Summary
The Greensboro Water Resources Department is proud that given the capacity of our treatment plants and the age of our
collection system, our permit departures have been minimal, especially when compared to similar cities. We recognize
however, that in the changing climate of environmental concern, total compliance is demanded by the public. For this
reason, the City of Greensboro has embarked on.a major capital outlay program to expand and enhance our treatment
processes, as well as to begin refurbishing our collection system. This is being paid for in higher sewer and water user
fees, but we feel that the public must support this major effort to protect our surface water resources.
WATER RESOURCES ADMINISTRATION: 336-373-2056
:WATER
T. Z. OSBORNE WATER RECLAMATION FACILITY: 336-373-7740 ReSO�IrC@S
NORTH BUFFALO WATER RECLAMATION FACILITY: 336-373-6913 r:°
City of Greensboro

.o
Tafile 1
T.Z. Osborne Publicly Owned Treatment Work.
National Pollutant Discharge Elirh'iniation:System, (NPDES) Permit #NC0047384'
�: - �-'�'%Smy}'3c F`;••..-��..�.�
"'Y
�"t�La`
3'd
�kr.- .$"aye' �ZFr _ _ _
t. �=ku.EA9._ i�w' S. _ .S
.:�_SF,e_
-'`say. - :�,�- -. 4�III
r} „�-.�tf' � n*'
iul
''ont
_' R - �, t'.
�;.
s�.�kX..,:.
yP
.1:
February
Mercury
3
Daily Maximum
March
Mercury
1
Daily Maximum
August
Mercury
1
Daily Maximum
..:Table, 2
North Buffalo Publicly Owned Treatment Works
National Pollutant Discharge Eliminiation .System (NPDES)Permit #NC0024325
!
January I High Chlorine 1 1 - I Substance
Notice: There were no environmental impacts noted for either reclamation plant.
Definitions:
Daily Maximum -Maximum level per day
Substance Activity -Technique error

_ Table 3
" - - Sewageills from C_ ollection. System Exceeding 1,000Gallons—
North Buffalo
NCO024325 4/28/2008
1,000
North Buffalo
Creek # 3
206 Denny Rd Grease
North Buffalo
NCO024325
8/27/2008
15,000
Bull Run
5230 X-Hilltop Rd
Equipment Failure
North Buffalo
NCO024325
8/27/2008
1,400
North Buffalo # 1
1215 Henderson Raod
Severe Natural Conditions
North Buffalo
NCO024325
8/27/2008
1,200
Horsepen Creek
3740 Battleground Ave
Severe Natural Condition
North Buffalo
NCO024325
8/27/2008
5,000
South Buffalo
Creek # 4
2350 Huffine Mill Rd
Severe Natural Conditions
T.Z. Osborne
NCO047384
8/27/2008
300,000
Big Alamance
Creek
6595 Judge Adams Rd
Severe Natural Conditions

Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Coleen H. Sullins, Director
Division of Water Quality
21 August 2008
Mr. Allan Williams
Director of Water Resources
City of Greensboro
PO Box 3136
Greensboro, NC 27402-3136
SUBJECT: Compliance Evaluation Inspection
City of Greensboro — North Buffalo WWTP
NPDES Permit No. NCO024325
Guilford County
Dear Mr. Williams:
A Compliance Evaluation Inspection (CEI) was performed on the City of Greensboro North Buffalo wastewater treatment
plant on Wednesday, August 20, 2008 and Thursday, August 21, 2008 by Corey Basinger of the Winston-Salem Regional
Office. Ed Osborne, Wally Kling and Martie Groome represented the City for the inspection. The inspection consisted of
two parts: an on -site inspection of the treatment facility and a file review. The following are the findings from the subject
inspection.
I. Permit
The NPDES permit for the City of Greensboro North Buffalo WWTP became effective February 1, 2007 and expires on
June 30, 2011. The permitted components of the wastewater treatment plant include: mechanical bar screens, influent flow
measurement (parshall flume), aerated grit removal, four primary settling tanks, and a 6 MGD flow transfer pump station to
TZ Osborne WWTP. Orilzinal Train consists of two trickling filters, activated sludge with nitrification (4 aeration basins
with fine bubble diffusers), step feed process (optional), chemical addition for phosphorus removal, and five secondary
clarifiers. #2 Train consists of activated sludge with nitrification and two secondary clarifiers. The flow from the two
separate trains come together and continue through the following treatment processes: four tertiary sand filters, effluent
flow measurement (parshall flume), chlorination and effluent aeration. Primary and waste activated sludge is pumped from
the City of Greensboro North Buffalo WWTP to the T.Z Osborne WWTP for dewatering and incineration.
II. Records/Reports
A review of the laboratory reports and Discharge Monitoring Reports (DMRs) for the City of Greensboro North Buffalo
WWTP revealed no discrepancy between the generated data and the data submitted to DWQ. A copy of the DMR is kept
on file at the wastewater plant. Maintenance records were deemed compliant with permit conditions. Operations records
include all sample analyses and process control tests that are performed daily. Calibration records for field parameters (pH,
DO, and Temp), as well as flow meter calibration records, were evaluated and deemed compliant. The records/reports
were very"comprehensive and well organized.
III. Facility Site Review
On the date of inspection, the treatment system consisted of influent flow measurement, new transfer pump station to TZ
Osborne WWTP, five (5) mechanical bar screens, grit removal, four (4) primary clarifiers, four (4) activated sludge tanks
with nitrification, five (5) secondary clarifiers, four (4) tertiary sand filters, chlorination, and step post aeration. Primary
and waste activated sludge is pumped from the City of Greensboro North Buffalo WWTP to the T.Z Osborne WWTP for
dewatering and incineration.
Activated sludge tank #2 was out of service at the time of inspection for maintenance/repair. The new transfer pump One
NoithCarolina
station was complete and operational at the time of inspection. Nahmallb,
North Carolina Division of Water Quality 585 Waughtown Street Phone [phone] Customer Service
Winston-Salem Regional Office Winston-Salem, NC 27107 Fax [phone]
Internet: www.ncwaterquality.org
An Equal Opportunity/Affirmative Action Employer— 50% Recycled/10% Post Consumer Paper

i
Mr. Allan Williams
21 August 2008
Page 2 of 3
IV. Effluent / ReceivingStream
tream
The WWTP discharges to North Buffalo Creek (Class C-NSW in the Cape Fear River Basin). The receiving waters
appeared clear of solids and debris on the date of the subject inspection. There was no evidence of any previous bypasses.
V. Flow Measurement
Effluent flow is measured using a Parshall flume in conjunction with a Milltronics II Open Channel Monitor ultrasonic flow
meter, flow recorder, and totalizer. The flow meter is calibrated by WWTP staff by comparing it to the gauge reading and
then adjusting the meter accordingly. The flow meter is electronically calibrated at least once a year. The most recent
calibration was conducted on March 3, 2008.
VI. Self -Monitoring Program
All monitoring was performed in compliance with the NPDES Permit No. NC0024325. Effluent limitation violations
occurring during the review period of May 2007 through May 2008 have been addressed via prior correspondence from the
Division.
All upstream and downstream sampling and monitoring is performed by the Upper Cape Fear River Basin Association.
VII. Compliance Schedules
The facility'has twenty-four (24) months from the effective date of the permit to comply with the new Total Residual
Chlorine effluent limitation of 17 ug/1. Please remember to continue to report the actual value on the DRM but for
compliance purposes, values less than 50ug/1 will be considered compliant.
VIII. Laboratory
All of the sample analyses are conducted by the City of Greensboro Laboratory and Meritech, Inc.
IX. Operations and Maintenance
Operations and maintenance at the time of the subject inspection were deemed satisfactory. Equipment operations are
monitored using a SCADA system. Routine maintenance is performed and documented for all components of the
wastewater system. Operations and Maintenance logs were very comprehensive.
X. Sludge Utilization/Disposal
Waste activated sludge is pumped to the City of Greensboro T.Z. Osborne WWTP for dewatering and incineration.
XI. Pretreatment
The City has an approved pretreatment program that is evaluated separately from this inspection.
XII. Stormwater
The City of Greensboro North Buffalo WWTP has a general stormwater permit for the municipal wastewater treatment
plant. The certificate of coverage is number NCG110004. The required Stormwater Pollution Prevention Plan was
available at the wastewater plant. The required monitoring had been performed semi-annually as required by the permit.
XIII. Sewer Overflow, Pollution Prevention & Multimedia
Not evaluated during this inspection.

Mr. Allan Williams
21 August 2008
Page 3 of 3
XIV. Other
The previous inspection was conducted by Corey Basinger on July 19, 2007. The back-up ORCs are James Burroughs and
Wally Kling.
If you have any questions or concerns regarding this report, please contact Corey Basinger at 336-771-4963.
Sincerely,
(Steve W. Tedder
Water Quality Supervisor
Cc: Ed Osborne, PO Box 3136, G'boro, NC 27402
Don Howard, City of Greensboro, PO Box 3136, G'boro, NC 27402
Martie Groome, City of Greensboro, PO Box 3136, G'boro, NC 27402
Guilford County Health Department
Central Files
SRO

Form Approved
OMB No.2040-0057
Approval Expires
8-31-98
United States Environmental Protection Aeencv. Washineton_ D.C.. 20460
Section A: National Data System Coding
Transaction Code NPDES No. Yr/Mo/Day Inspection Type inspector FacilityType
N 5 NCO024325 08-08-20 C S 1
Facility Evaluation Rating BI QA ..........Reserved...........
5 N N
Section B: Facility Data
Name and Location of Facility Inspected:
Entry Time:
Permit Effective
0855 hrs.
Date: Feb 1, 2007
City of Greensboro — North Buffalo
Wastewater Treatment Plant
Exit Time:
Permit Expiration
Date: June 30, 2011
Name(s) of On -Site Representative(s): Title(s): Phone No(s):
Mr. Ed Osborne ORC [phone]
Mr. Wally Kling ORC (TZO) [phone]
Ms. Martie Groome Lab Supervisor [phone]
Name, Address of Responsible Official:
Title: Director of Water Resources
Mr. Allan Williams
City of Greensboro
Phone No. 336-373-2055
Contacted? No
PO Box 3136
Greensboro, NC 27402
Section C: Areas Evaluated During Inspection
• Permit • Flow Measurement • Operations/Maintenance
• Records/Reports • Self -Monitoring Program • Sludge Handling/Disposal
• Facility Site Review • Effluent/Receiving Waters • Stormwater
Section D: Summary of Findings/Comments
Permit..................................Current permit expires June 30, 2011.
Records/Reports ..................The operators daily records are maintained as per permit conditions.
Facility Site Review ............ All system components were operating properly.
Effluent/Receiving Waters.. Receiving stream showed no visible adverse impacts on date of inspection.
Flow Measurement..............No problems noted. All calibration records present.
Self -Monitoring Program .... The DMR's are submitted as required by NPDES permit
Operations/Maintenance ..... No problems were noted with respect to operations and maintenance.
Sludge Disposal ..................Solids pumped to T.Z. Osborne WWTP for dewatering and incineration.
(SEE DATA SUMMARY ATTACHED FOR THE PERIOD 05/07 — 05/08)
Name(s) and Signature(s) of Inspectors:
Agency/Office/Telephone:
Date:
DWQ/WSRO/[phone]'Ie�Sr
Signature f Reviewer:
Agency/Office:
Date:
DWQ / WSRO / [phone]

Permit: NCO024325
Inspection Date: 08/20/2008
Owner - Facility: North Buffalo Creek WWTP
Inspection Type: Compliance Evaluation
Operations & Maintenance Yes No NA NE
Is the plant generally clean with acceptable housekeeping? ■ ❑ ❑
Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable Solids, pH, DO, Sludge ■ ❑ Q f_1
Judge, and other that are applicable?
Comment:
(If the present permit expires in 6 months or less). Has the permittee submitted a new application?
n
n
■ n
Is the facility as described in the permit?
■
n
n n
# Are there any special conditions for the permit?
❑
❑
■
Is access to the plant site restricted to the general public?
■
n
n n
Is the inspector granted access to all areas for inspection?
■
n
n n
Comment:
Record Keeping
Yes
No
NA
NE
Are records kept and maintained as required by the permit?
■
n
n
n
Is all required information readily available, complete and current?
■
n
n
n
Are all records maintained for 3 years (lab. reg. required 5 years)?
■
n
n
n
Are analytical results consistent with data reported on DMRs?
■
n
n
n
Is the chain -of -custody complete?
■
n
Dates, times and location of sampling
■
Name of individual performing the sampling
■
Resultsof analysis and calibration
■
Dates of analysis
■
Name of person performing analyses
■
Transported COCs
Are DMRs complete: do they include all permit parameters?
■
Has the facility submitted its annual compliance report to users and DWQ?
®n
n
n
(If the facility is = or > 5 MGD permitted flow) Do they operate 24/7 with a certified operator on each shift?
■
n
n
Is the ORC visitation log available and current?
■
n
n
n
Is the ORC certified at grade equal to or higher than the facility'classification?
■
n
n
n
Is the backup operator certified at one grade less or greater than the facility classification?
■
n
n
❑
Is a copy of the current NPDES permit available on site?
■
❑
n
0—
Page # 3

Permit: NC0024325 Owner - Facility: North Buffalo Creek WVVrP
Inspection Date: 08/20/2008 Inspection Type: Compliance Evaluation
Record Keeping
Yes
No
NA
NE
Facility has copy of previous year's Annual Report on file for review?
■
n
n
n
Comment:
Effluent Pipe
Yes
No
NA
NE
Is right of way to the outfall properly maintained?
■
n
n
n
Are the receiving water free of foam other than trace amounts and other debris?
■
❑
❑
n
If effluent (diffuser pipes are required) are they operating properly?
n
n
■
Comment:
Flow Measurement - Influent
Yes
No
NA
NE
# Is flow meter used for reporting?
■
n
n
n
Is flow meter calibrated annually?
■
Is the flow meter operational?
■
n
n
n
(If units are separated) Does the chart recorder match the flow meter?
n
n
n
■
Comment:
Flow Measurement - Effluent
Yes
No
NA
NE
# Is flow meter used for reporting?
■
n
n
n
Is flow meter calibrated annually?
■
n
n
n
Is the flow meter operational?
■
n
n
n
(If units are separated) Does the chart recorder match the flow meter?
n
n
n
■
Comment:
[:--A
Yes
No
NA
NE
Is containment adequate?
■
n
n
n
Is storage adequate?
■
n
n
n
Are backup pumps available?
■
n
n
n
Is the site free of excessive leaking?
■
n
n
n
Comment:
Pump Station - Influent
Yes
No
NA
NE
Is the pump wet well free of bypass lines or structures?
■
n
n
n
Is the wet well free of excessive grease?
■
❑
❑
❑
Are all pumps present?
■
n
n
n
Are all pumps operable?
■
❑
n
n
Page # 4

Permit: NC0024325 Owner - Facility: North Buffalo Creek WWTP
Inspection Date: 08/20/2008 Inspection Type: Compliance Evaluation
Pump Station - Influent
Yes
No
NA
NE
Are float controls operable?
■
n
n
n
Is SCADA telemetry available and operational?
■
n
n
n
Is audible and visual alarm available and operational?
■
o
n
n
Comment: New transfer station complete and operational.
Bar Screens
Yes
No
NA
NE
Type of bar screen
a.Manual
b.Mechanical
■
Are the bars adequately screening debris?
■
n
n
n
Is the screen free of excessive debris?
■
n
n
n
Is disposal of screening in compliance?
■
n
n
n
Is the unit in good condition?
■
❑
:Comment:
..
V—
Aln
AIA
NC
Type of grit removal
a.Manual
n
b.Mechanical
■
Is the grit free of excessive organic matter?
■
n
n
n
Is the grit free of excessive odor?
■
n
n
n
# Is disposal of grit in compliance?
■
❑
❑
❑
Comment:
Primary Clarifier
Yes
No
NA
NE
Is the clarifier free of black and odorous wastewater?
■
n
n
n
Is the site free of excessive buildup of solids in center well of circular clarifier?
®n
n
n
Are weirs level?
®❑
❑
❑
Is the site free of weir blockage?
■
n
n
n
Is the site free of evidence of short-circuiting?
■
n
n
n
Is scum removal adequate?
®n
❑
❑
Is the site free of excessive floating sludge?
■
n
❑
Is the drive unit operational?
■
n
n
n
Page # 5

F,
Permit: NC0024325 Owner - Facility: North Buffalo Creek WWTP
Inspection Date: 08/20/2008 Inspection Type: Compliance Evaluation
Primary Clarifier
Yes
No
NA
NE
Is the sludge blanket level acceptable?
■
n
n
n
Is the sludge blanket level acceptable? (Approximately'/4 of the sidewall depth)
■
n
n
n
Comment:
Secondary Clarifier
Yes
No
NA
NE
Is the clarifier free of black and odorous wastewater?
■
❑
i]
O
Is the site free of excessive buildup of solids in center well of circular clarifier?
■
n
n
n
Are weirs level?
■
n
n
n
Is the site free of weir blockage?
■
n
n
n
Is the site free of evidence of short-circuiting?
■
n
n
n
Is scum removal adequate?
■
❑
❑
❑
Is the site free of excessive floating sludge?
■
❑
❑
n
Is the drive unit operational?
■
n
n
n
Is the return rate acceptable (low turbulence)?
■
❑
❑
❑
Is the overflow clear of excessive solids/pin floc?
■
n
n
n
Is the sludge blanket level acceptable? (Approximately % of the sidewall depth)
■
n
Comment:
Trickling Filter
Yes
No
NA
NE
Is the filter free of ponding?
❑
❑
❑
■
Is the filter free of leaks at the center column of filter's distribution arms?
n
n
n
■
Is the distribution of flow even from the distribution arms?
n
❑
❑
■
Is the filter free of uneven or discolored growth?
n
n
n
■
Is the filter free of sloughing of excessive growth?
n
n
n
■
Are the filter's distribution arms orifices free of clogging?
n
n
n
■
Is the filter free of excessive filter flies, worms or snails?
n
n
n
■
Comment: Trickling filters not in operation at time of inspection.
Aeration Basins
Yes
No
NA
NE
Mode of operation
Ext. Air
Type of aeration system
Diffused
Is the basin free of dead spots?
■
n
n
n
Are surface aerators and mixers operational?
®n
n
n
Page
# 6

Permit: NCO024325
Inspection Date: 08/20/2008
Owner - Facility: North Buffalo Creek VWVrP
Inspection Type: Compliance Evaluation
Aeration Basins
Yes
No
NA
NE
Are the diffusers operational?
■
n
n
n
Is the foam the proper color for the treatment process?
■
n
n
n
Does the foam cover less than 25% of the basin's surface?
■
❑
n
n
Is the DOlevel acceptable?
■
n
n
n
Is the DO level acceptable?(1.0 to 3.0 mg/I)
■
❑
n
n
Comment: #2 out for repair/maintenance
Filtration (High Rate Tertiary)
Yes
No
NA
NE
Type of operation:
Down flow
Is the filter media present?
■
n
n
❑
Is the filter surface free of clogging?
■
n
n
n
Is the filter free of growth?
■
n
n
n
Is the air scour operational?
■
n
n
n
Is the scouring acceptable?
■
❑
n
n
Is the clear well free of excessive solids and filter media?
■
❑
n
n
Comment:
Standby Power
Yes
No
NA
NE
Is automatically activated standby power available?
■
n
n
n
Is the generator tested by interrupting primary power source?
■
n
n
n
Is the generator tested under load?
■
n
n
❑
Was generator tested & operational during the inspection?
n
n
n
■
Do the generator(s) have adequate capacity to operate the entire wastewater site?
■
n
n
n
Is there an emergency agreement with a fuel vendor for extended run on back-up power?
■
n
n
n
Is the generator fuel level monitored?
■
n
n
n
Comment:
Pumps-RAS-WAS
Yes
No
NA
NE
Are pumps in place?
■
n
n
❑
Are pumps operational?
®n
n
n
Are there adequate spare parts and supplies on site?
■
n
n
n
Comment:
Influent SamDlina
Yes
No
NA
NE
Page # 7

I
Permit: NC0024325 Owner - Facility: North Buffalo Creek WNlrP
Inspection Date: 08/20/2008 Inspection Type: Compliance Evaluation
Influent Sampling
Yes
No
NA
NE
# Is composite sampling flow proportional?
■
n
n
n
Is sample collected above side streams?
■
n
n
n
Is proper volume collected?
®
n
n
n
Is the tubing clean?
■
n
n
n
# Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees Celsius)?
■
n
n
n
Is sampling performed according to the permit?
■
n
n
n
Comment:
Effluent Sampling
Yes
No
NA
NE
Is composite sampling flow proportional?
■
n
n
n
Is sample collected below all treatment units?
■
n
n
n
Is proper volume collected?
■
n
n
n
Is the tubing clean?
■
n
n
n
# Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees Celsius)?
■
n
ri
n
Is the facility sampling performed as required by the permit (frequency, sampling type representative)?
n
n
n
Comment:
Upstream / Downstream Sampling Yes No NA NE
Is the facility sampling performed as required by the permit (frequency, sampling type, and sampling location)? ■ n n n
Comment: conducted by Cape Fear River Basin Association.
Disinfection -Liquid Yes No NA NE
Is there adequate reserve supply of disinfectant? ■ n n n
(Sodium Hypochlorite) Is pump feed system operational?
■
❑
❑
n
Is bulk storage tank containment area adequate? (free of leaks/open drains)
■
n
n
n
Is the level of chlorine residual acceptable?
■
n
n
n
Is the contact chamber free of growth, or sludge buildup?
p
n
n
n
Is there chlorine residual prior to de -chlorination?
❑
❑
n
■
Comment:
Solids Handling Equipment
Yes
No
NA
NE
Is the equipment operational?
■
❑
❑
n
Is the chemical feed equipment operational?
n
n
■
n
Is storage adequate?
n
n
■
n
Page
# 8

Permit: NCO024325
Inspection Date: 08/20/2008
Owner- Facility: North Buffalo Creek VVWfP
Inspection Type: Compliance Evaluation
Solids Handling Equipment
Is the site free of high level of solids in filtrate from filter presses or vacuum filters?
Is the site free of sludge buildup on belts and/or rollers of filter press?
Is the site free of excessive moisture in belt filter press sludge cake?
The facility has an approved sludge management plan?
Comment: All solids are sent to TZ Osborne for incineration.
Page # 9

r'
MINWA
NCDENR
North Carolina Department of Environment and Natural
Division of Water Quality
Michael F. Easley, Governor
February 27, 2008
Allan Williams, Director of Water Resources
City of Greensboro
2199 White Street
Greensboro, NC 27405
Subject: Modification of NPDES Permits 0024:3Z5fand NCO047384
North Buffalo WWTP and T.Z. Osborne WWTP
Guilford County
Dear Mr. Williams:
KCC5NF.b—
N.C. Dept. of ENR
FEB 2 8 2008
Winston-Salem
urOeSonal Ggfice
William G. Ross, Jr., Secretary
. Coleen H. Sullins, Director
The Division of Water Quality has received and reviewed the Town's minor permit modification requests for
NPDES permits NCO024325 and NCO047384 dated February 12, 2008, for North Buffalo WWTP and T.Z.
Osborne WWTP. In response to your request, the subject NPDES permits have been modified to reflect the
following:
■ Footnote 8 within Condition A. (1.) of each permit, has been changed to reflect a quantitation limit
for cyanide at 20 µg/L.
Please find enclosed the revised pages, which should be inserted into each respective permit. The old pages
may then be discarded. All other terms and conditions contained in the original permits remain unchanged
and in full effect. These permit modifications are issued under the requirements of North Carolina General
Statutes 143-215.1 and the Memorandum of Agreement between North Carolina and the U.S.
Environmental Protection Agency.
If you have any questions concerning these permit modifications, please contact Vanessa Manuel of the
Eastern NPDES Program at [phone], extension 532.
Sincerely,
Coleen H. Sullins
cc: DWQ/SWP Central Files _
WQ/SWP Wrinston=Salem.Regional�Officel
NPDES Unit
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
512 N. Salisbury St., Raleigh, North Carolina 27604
Phone: [phone] / FAX [phone] / Internet: h2o.enr.state.nc.us
An Equal Opportunity/Affirmative Action Employer— 50% Recycled/10% Post Consumer Paper
NorthCarohna
Aahmally

r .*�
Permit NCO024325
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provisions of North Carolina General Statute 143-215.1, other lawful
standards and regulations promulgated and adopted by the North Carolina Environmental
Management Commission, and the Federal Water Pollution Control Act, as amended, the
City of Greensboro
is hereby authorized to discharge wastewater from a facility located at the
North Buffalo WWTP
2199 White Street, Greensboro
Guilford County
to receiving waters designated as North Buffalo Creek in the Cape Fear River Basin in
accordance with effluent limitations, monitoring requirements, and other conditions set forth
in Parts I, II and III hereof.
The permit shall become effective March 1, 2008.
This permit and the authorization to discharge shall expire at midnight on June 30, 2011.
Signed this day February 27, 2008.
1 r
1 a
r Coleen H. Sullins, Director
Division of Water Quality
By Authority of the Environmental Management Commission

1 Permit NCO024325
A. (1) EFFLUENT LIMITS AND MONITORING REQUIREMENTS - FINAL
Beginning on March 1, 2008, and lasting until June 30, 2011, the permittee is authorized to discharge treated wastewater
from outfall 001. Such discharges shall be limited and monitored by the permittee as specified below:
EFFLUENT
CHARACTERISTICS '.. `.,Y
EFFLUENT LIMITATIONS:
MONITORING REQUIREMENTS
Monthly,.::"WeeklyDail
Average :
Average `
Maximum
Measurement
Frequency
Sample a
P .'P
Sample Location
P
Flow
16.0 MGD
Continuous
Recording
Influent or Effluent
Total Monthly Flow (MG)
Monitor and Report
Monthly
Recorded or
Calculated
Influent or Effluent
CBOD, 5-day, 200C (Summer)2
8.0 mg/L
12.0 mg/L
Daily
Composite
Influent & Effluent
CBOD, 5-day, 200C (Winter)2
16.0 mg/L
24.0 mg/L
Daily
Composite
Influent & Effluent
Total Suspended Solids2
30.0 mg/L
45.0 mg/L
Daily
Composite
Influent & Effluent
NH3 as N (Summer)
4.0 mg/L
12.0 mg/L
Daily
Composite
Effluent
NH3 as N (Winter)
8.0 mg/L
24.0 mg/L
Daily
Composite
Effluent
Fecal Coliform (geometric mean)
200/100 mL
400/100mL
Daily
Grab
Effluent
Dissolved Oxygen3
Daily
Grab
Effluent
Temperature°C
Daily
Grab
Effluent
pH4
Daily
Grab
Effluent
Total Nitrogen (NO2+NO3+TKN)5 .
Weekly
Composite
Effluent
Total Phosphoruss
2.0 mg/L
quarterly averages
Weekly
Composite
Effluent
Chronic Toxicity?
Quarterly
Composite
Effluent
Total Cyanides
5.2 Ng/L
22.0 pg/L
Weekly
Grab
Effluent
Total Chromium
51.0 pg/L
1022.0 Ng/L
Weekly
Composite
Effluent
Total Nickel
91.0 pg/L
261.0 pg/L
Weekly
Composite
Effluent
Total Mercury9
0.012 Ng/L
Weekly
Grab9
Effluent
Total Copper
2/Month
Composite"
Effluent
Total Zinc --
—
— -
2/Month
Composite
Effluent
Total Iron '
Monthly
Composite
Effluent
Total Selenium
Quarterly
Composite
Effluent
Fluoride'
1.9 mg/L
Weekly
Composite
Effluent
Chloride
Quarterly
Composite
Effluent
Dissolved Oxygen'O
10
Grab
U, D1, D2, D3
Fecal Coliform10
10
Grab
U, D1, D2, D3
Temperature°C10
10
Grab
U, D1, D2, D3
Conductivity10
10
Grab
U, D1, D2, D3
Total Residual Chlorine"
17.0 Ng/L
Daily
Grab
Effluent
TKN (mg/L)
Monitor and Report
Weekly
Composite
Effluent
NO3-N + NO2-N (mg/L)
Monitor and Report
Weekly
Composite
Effluent
TN Load12
Monitor and Report (lb/mo)
Monitor and Report (lb/yr)
Monthly
Annually
Calculated
Calculated
Effluent
Effluent
TP Load12
Monitor and Report (lb/mo)
Monitor and Report (lb/yr)
Monthly
Annually
Calculated
Calculated
Effluent
Effluent
Effluent Pollutant Scan
See A. (5)
Notes:
1. U: Upstream at the influent conduit. D1: Downstream at the unimproved road 0.8 miles east of White/Nealtown
Road intersection. D2: Downstream at Rankin NO Road. D3: Downstream in Buffalo Creek -at McCleansville
Road.

Permit NCO024325
2. The monthly average effluent CBOD5 and TSS concentrations shall not exceed 15% of the respective influent
value (85% removal).
3. The daily effluent dissolved oxygen concentration shall not be less than 6.0 mg/L.
4. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
5. TN nutrient limit required by HB 515 is deferred until results of nutrient response modeling effort are completed.
6. Compliance shall be based on a quarterly average of weekly samples, with quarterly periods defined as January -
March, April June, July -September, and October -December.
7. Chronic Toxicity (Cenodaphnia) at 90% with testing in January, April, July and October (see Special Condition A. (2)).
8. The quantitation limit for cyanide shall be 20 µg/L; levels reported below 20 µg/L shall be considered
zero for compliance purposes.
9. Effluent samples must be analyzed by an EPA -approved low level mercury analysis method.
10. Instream monitoring requirements are waived as long as facility retains membership in the UCFRBA. If
membership is cancelled, facility will monitor 3/Week Qune-September) and 1/Week (October -May). Stream
sampling may be discontinued at such times as flow conditions in the receiving waters or extreme weather
conditions will result in a substantial risk of injury or death to persons collecting samples. Upon such
discontinuance, stream sampling shall be resumed at the first opportunity after the risk period has ceased.
(Summer): April 1- October 31, (Winter): November 1 - March 31
(Daily): every day on which a wastewater discharge occurs except Saturdays, Sundays, and legal holidays unless
otherwise specified by the Director.
11. Facility is allowed 24 months from the effective date of the permit to comply with the total residual chlorine limit.
This time period is allowed in order for the facility to budget and design/construct the dechlorination and /or
alternative disinfection systems.
12. TN or TP Load is the mass quantity of Total Nitrogen or Phosphorus discharged in a given period of time. See
Special Condition A.(4), Calculation of Mass Loads.
* The limit might be removed if the facility submits 12 month of data that shows no reasonable potential to exceed the
water quality standard.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

��F• 9Q Michael F: Easley,' Goyemor
�� G William G> Ross Jr. 'Secretary
North Carolina Department of Environment and Nafur' I Resources
-�_ Coleen Sullins; • Director
Division of Water Quality
February 15, 2008
1VIARTIE GROOME:
LABORATORY :&; INDUSTRIAL WASTE SECTION SUPERVISOR
CITY OF GREENSBORO
WATER RESOURCES DEPT
BOX 3136
GREENSBORO.NC 27402-3136
Subject:. Acknowledgement of Permit Modification' Application Number
= . NPDES Perrriit.NC0024325-North Buffalo POTW
NPDES, Permit NCO047384-T.Z: Osborn POTW'
Guilford County
Dear Mr./Ms. Groomes ;
The Division of Water Quality; Point Source Branch; acknowledges receipt of your permit modification application
with supporting information on February" 13, 2008. This letter is•to inform you of a change In -reviewers.
The reviewer will perform a detailed review, and contact you with.a request for additional information, if necessary.• To
ensure the maximum efficiency. in processing permit applications, the Division requests your assistance in providing a,
timely and complete response to any additional information requests.
Please note.that-the new assigned reviewer is Vanessa -Manuel.- If you have any questions, please contact Vanessa
- ---- M-anuelat 919--733=5083 ext: 532 or via.. —email at [e-mail] . Ifthe she is unavailable, you•may'
leave a:message; and she will respond promptly.
PLEASE. REFER, TO THE ABOVE APPLICATION NUMBER WHEN MAKING INQUIRES ON THIS
PROJECT.
Sincerely,
lei
Laurie Singleton
Point Source Branch
Cc: Central File
Winston-Salem Regional Office,1 Surface Water Protection Section
Permit application file NC0024325 and NCO047384
Nop"Ak rolina
• �atura!!y
North Carolina Division of Water Quality ' 1617 Mail Service Center Raleigh, NC 27699-1617 Phone [phone] ' Customer Service
Internet: www.newatcrqualitLorg Location: 512 N: Salisbury St: Raleigh, NC 27604- Fax [phone]
An Equal Opportunity/Affirmative Action Employer,-50% Recycled/10% Post Consumer Paper

March 31, 2008
CERTIFIED MAIL: 7006 2760 0001 9282 1256
RETURN RECEIPT REQUESTED
Mr. Mitchell Johnson
City Manager
City of Greensboro
PO Box 3136
Greensboro, North Carolina 27402-3136
Michael F: Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Coleen H. Sullins, Director
Division of Water Quality
SUBJECT: NOTICE OF VIOLATION
Whole Effluent Toxicity (WET) Testing
Copper and Zinc Action Level Policy
RECEIVED
NPDES Permit No. NC0024325
N.C. Deot of ENR
Greensboro N. Buffalo Cr. WWTP
APR 0 12008
Guilford County
Knstcn•Salem
Dear Mr. Johnson:
Re©lonal Office
This is to inform you that a review of your toxicity self -monitoring report form for the month of January 2008
indicates a violation of the toxicity limitation specified in your NPDES Permit. You should undertake necessary actions to
eliminate or reduce effluent toxicity to acceptable levels.
In addition, this correspondence contains important information on the Division's Copper and Zinc Action Level
Policy which is triggered by two or more toxicity limit violations that occur during the toxicity testing calendar quarter
_ specified by the toxicity testing special condition of your NPDES Permit._ Attachments addressing policy implementation___
and a copy of the Division's Toxicity Reduction Guidance have been included with this Notice of Violation.
You should -initiate follow-up toxicity testing upon a single WET test failure which occurs during the toxicity testing
calendar quarter.
Your facility is currently monitoring for copper and the data indicate that the level of copper in your effluent has the
potential to cause an exceedance of the NC water quality action level for this parameter in your receiving stream during low
stream flow conditions. The policy states that whenever a facility experiences two or more toxicity limit violations during a
toxicity testing calendar quarter, the NPDES Permit will be modified to include numeric limits for copper and/or zinc
UNLESS the permittee provides one or more of the following:
1. Instream measurements of dissolved metal during low flow conditions that demonstrate compliance with
the Action Level standard
2. A revision of the prospective permit limit using improved inputs that in concert with existing or additional
monitoring data demonstrates compliance with the Action Level standard
3. Toxicity Identification Evaluation (TIE) results that definitively rules out copper as the cause of effluent
toxicity
4. Demonstration by an alternative method approved by the Division and EPA that copper is not the cause of
effluent toxicity
One
NorthCarolina
Naturally
North Carolina Division of Water Quality 1621 Mail Service Center Raleigh, NC 27699-1621 Phone [phone] Customer Service
Internet: www.esb.enr.state.nc.us 4401 Reedy Creek Rd. Raleigh, NC 27607 FAX [phone]
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. 41
Page 2
N. Buffalo Cr. WWTP
March 31, 2008
The Division has evaluated your copper monitoring data. The Division has also developed a prospective NPDES
permit limit based on your facility's instream waste concentration, the copper action level criterion and a translator
procedure. Based on this data your prospective copper permit limit is 17.3 µg/L.
The permittee, upon experiencing two or more toxicity limit violations during a toxicity testing calendar
quarter must either provide DWQ with:
a) Written notification indicating acceptance of the prospective copper permit limit. .
Notification is due within 30 days after the date of the second WET Notice of Violation.
OR
b) Written notification indicating your choice of option(s) as noted on page one of this correspondence.
Notification is due within 30 days after the date of the second WET Notice of Violation. DWQ
approval of options 1-3 (previous page) is not necessary as the Division expects work to rule out
copper as a causative effluent toxicant to begin immediately upon the second WET permit limit
violation.
Written notification (a or b above) shall be sent to:
North Carolina Division of Water Quality
Environmental Sciences Section
Aquatic Toxicology Unit
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Please note that if you choose item b) above, you will be given nine months to submit documentation that eliminates
copper as a causative effluent toxicant. Your final report should be comprehensive and include all data used to support your
conclusion(s). Should the data indicate copper as the source of effluent toxicity or if the data are inconclusive as to copper's
role as a toxicity source, then the NPDES Permit will be reopened and the metal limit specified above will be applied to the
permit. The report is due nine months after the date of the second WET Notice of Violation.
Three copies of the final report shall be submitted to:
North Carolina Division of Water Quality
Environmental Sciences Section
Aquatic Toxicology Unit
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
You should consider submitting the above correspondence certified mail.
Failure to notify DWQ of your acceptance of a limit, failure to notify DWQ of your option selection or failure
to make acceptable demonstration to DWQ that copper is not a causative effluent toxicant within the stated time
.frames will result in reopening of the NPDES Permit to include a copper numeric limitation, as appropriate.

Page 3
N. Buffalo Cr. WWTP
March 31, 2008
I the effluent is toxic then we expect work to commence immediately with toxic effluent samples. Failure to initiate
work with toxic effluent samples during the study period is unacceptable and will be considered a failure to make acceptable
demonstration as cited above. We recommend a minimum of three separate sampling events during the nine month period to
definitively rule out copper as a causative effluent toxicant.
Please note that your actions to notify DWQ of prospective limit acceptance or to notify DWQ of plan option(s) and
subsequent submission of a plan are contingent upon two or more toxicity NPDES permit limit violations occurring during a
toxicity testing calendar quarter.
Also note that the WET limit will remain in your NPDES permit regardless of whether metals are the source of
effluent toxicity. The data resulting from your actions to disprove copper as a source of effluent toxicity will determine
whether an NPDES Permit limit will be assigned for this parameter. You are responsible for initiating actions to address
these issues.
You may consider entering into a Special Order by Consent (SOC) with DWQ. A SOC provides regulatory relief
for specific NPDES permit limit violations and, if signed, will contain a requirement to conduct a Toxicity Reduction
Evaluation. The SOC will contain a compliance schedule, stipulated penalties for failing to meet milestone activity dates and
may contain upfront penalties to settle past permit limit violations.
Additional information regarding the Division's Copper and Zinc Action Level Policy can be found at the following
web site - http://www.esb.enr.state.nc.us. Click on the "Aquatic Toxicology" Unit and go to the prompt "AT Downloadable
Files" located at the bottom of the page. This web site also contains EPA's "Toxicity Reduction Evaluation Guidance for
Municipal Wastewater Treatment Plants." Section 4 of this document contains pertinent information on Toxicity
Identification Evaluations.
If you have any questions concerning this correspondence, please contact me at [phone] or Mr. John
Giorgino at [phone].
Sincerely,
V ON
y M Cindoor
Supervisor, Aquatic Toxicology Unit
ATTACHMENTS
Steve Tedder- Winston-Salem Regional Office (no attachments)
David Russell- Winston-Salem Regional Office (no attachments)
Jenifer Carter- Winston-Salem Regional Office (no attachments)
Vanessa Manuel -Point Source Branch (no attachments)
Marshall Hyatt-USEPA Region IV, Atlanta Federal Center, 61 Forsyth St., SW, Atlanta, GA
30303 (no attachments)
Central Files (no attachments)
Aquatic Toxicology Unit Files (no attachments)

Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
7 January 2008
Mr. Allan Williams
Director of Water Resources
City of Greensboro
PO Box 3136
Greensboro, NC 27406
SUBJECT: Notice of Violation - Effluent Limitations_
NOV-2008-LV-0013
City of Greensboro — North Buffalo WWTP
NPDES No. NCO024325
Guilford County
Mr, Williams:
Coleen H. Sullins, Director
Division of Water Quality
Review of the self -monitoring report for the month of October 2007 revealed the following weekly
average effluent limit violation:
Date
3 Oth-6th
Parameter Permit Limit
Total Cyanide 5.2
Reported Value Units
6.4 ug/l
Remedial actions, if not already implemented, should be taken to correct the above noncompliance
problem(s). Please be aware that violations of your NPDES permit could subject you to enforcement
action by the Division with the possible assessment of civil penalties of up to $25,000 per day, per
violation. Should you have any questions, please contact this Office at [phone].
Sincerely,
Steve W. Tedder
Water Quality Supervisor
cc: WSRO, Central Files
Guilford County Health Dept.
Nose Carolina
Ntmally
North Carolina Division of Water Quality 585 Waughtown Street Phone [phone] Customer Service
Winston-Salem Regional Office Winston-Salem, NC 27107 Fax [phone]
Internet: www.ncwaterquality.org
An Equal Opportunity/Affirmative Action Employer - 50% Recycled/10% Post Consumer Paper

a..v
0
Cover Sheet from
Staff Member to
Regional Supervisor
DMR Review Record y�
Facility: A/, uPP� Permit/Pi e No.: ��0���� Month/Year
ri r
Monthly Averacye Violations
Parameter Permit Limit DMR Value % Over Limit
Ceekl /Daily Violations
Date Parameter Permit Limit/ Tvpe DMR Value % Over Limit
Monitorin; Frequency Violations
--Date ----Parameter----- - Permit-Frequenav - - Values -Reported-- -# of Violations
Other Violations
Completed by: � 67 Date: /4 �' r
Regional Water Quality
Supervisor Sianoff: Date: �— 7
,j /ie� / L`

1
W ATF9
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Coleen H. Sullins, Director
Division of Water Quality
30 November 2007
Mr. Allan Williams
Director of Water Resources
City of Greensboro
PO Box 3136
Greensboro, NC 27406
SUBJECT: Notice of Violation -. Effluent Limitations
NOV-2007-LV-0553
City of Greensboro — North Buffalo WW'TP
NPDES No. NCO024325
Guilford County
Mr. Williams:
Review of the self -monitoring report for the month of September 2007 revealed the following
weekly average effluent limit violation:
Date Parameter Permit Limit Reported Value Units
101h-14'h Total Cyanide 5.2 7.8 ug/1
Remedial actions, if not already implemented, should be taken to correct the above noncompliance
problem(s). Please be aware that violations of your NPDES permit could subject you to enforcement
action by the Division with the possible assessment of civil penalties of up. to $25,000 per day, per
violation. Should you have any questions, please contact this Office at [phone],
Sincerely,
(�?Z/ V6/r�_
Steve W. Tedder
Water Quality Supervisor
cc: Compliance Group one
Central Files NorthCarolina
Natura!!y
(Juiffbid enurity Health Dept.
North Carolina Division of Water Quality 585 Waughtown Street Phone [phone] Customer Service
Winston-Salem Regional Office Winston-Salem, NC 27107 Fax [phone]
Internet: www.ncwaterquality.or
An Equal Opportunity/Affirmative Action Employer— 50% Recycled/10% Post Consumer Paper

Cover Sheet from
Staff Member to
Regional Supervisor
DMR Review Record
Facility: PemutlPipe No.: N C Oa Z-4 3ZS MondvYear S�Prze�
Monthly Average Violations
Parameter Permit Limit DMR Value
Weekly ail Violations
% Over Limit
Date Parameter Permit Limit/Type DMR Value % Over Limit
Monitoring Frequency Violations
Date Pafameter Permit-Fre ueuencv Values Reported- # of -Violations
1
Other Violations
Completed by: Date:-/5�4 ✓ Z�U�--
Regional Water Qualitylx�
Supervisor Signoff: Date:

w �OF WA7,
p -c
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
2 November 2007
Mr. Allan Williams
Director of Water Resources
City of Greensboro
PO Box 3136
Greensboro, NC 27406
SUBJECT: Notice of Violation - Effluent Limitations
NOV-2007-LV-0533
City of Greensboro — North Buffalo WWTP
NPDES No. NCO024325
Guilford County
Mr. Williams:
Coleen H. Sullins, Director
Division of Water Quality
Review of the self -monitoring report for the month of August 2007 revealed the following weekly
average effluent limit violation:
Date
19th-25th
Parameter
Cyanide
Permit Limit
5.2
Reported Value Units
10.0
ug/l
Remedial actions, if not already implemented, should be taken to correct the above noncompliance
problem(s). Please be aware that violations of your NPDES permit could subject you to enforcement
action by the Division with the possible assessment of civil penalties of up to $25,000 per day, per
violation. Should you have any questions, please contact this Office at [phone].
Sincerely,
Steve W. Tedder
Water Quality Supervisor
cc: Central Files-SWP
Guilford County Health Dept No"` Carolina
Naturally
North Carolina Division of Water Quality 585 Waughtown Street Phone [phone] Customer Service
Winston-Salem Regional Office Winston-Salem, NC 27107 Fax [phone]
Internet: www.ncwaterquality.or
An Equal Opportunity/Affirmative Action Employer— 50% Recycled/10% Post Consumer Paper

Cover Sheet from
Staff Member to
Regional Supervisor
DMR, Review Record
Facility:. P91W LK4ia Permit/Pipe No.: AI CD02,4 32S Month/Year Au97,"'-
Monthly Average Violations
Parameter Permit Limit DMR Value % Over Limit
eekl aily Violations
Date Parameter. Permit Limit/Type DMR Value % Over Limit
lit 25 �A nr k-b t�46O
Monitoring Frequency Violations
—`Date Parameter Permit Frequency Values Reported # of Violations
Other Vi
AA,-P r1le- eMeW ZkA--; '° l>iDA.T
Completed by: Date: a �/'7� d
Regional Water Quality
Supervisor Signoff:
NuJ
Date:��
�V, � _ L �: o53 3

ty o�t.cYr'eensboro
A to C No. 024325A01
Issued October 6, 2005
i
2008
I
.,ston-Salem
Regional Office
Engineer's Certification
;.,��.,i ems•; -
abe
.0 p) a� i
I, Na it :5�ln P2 , as a duly registered Professional Engineer in
the State of North Carolina, having been authorized to observe (periodically/weekly/full time)
the construction of the modifications and improvements to the North Buffalo WWTP, located on
2199 White Street and T. Z. Osborne WWTP located on Huffline Mill Road west of
McLeansville in Guilford County for the City of Greensboro, hereby state that, to the best of my
abilities, due care and diligence was used in the observation of the following construction:
Three new fine mechanical screens with compactors; one pump station consisting
of five 500 horsepower pumps to pump to T.Z. Osborne WRF and two 150
horsepower pumps to pump to North Buffalo WRF; approximately 18,800 linear
feet of 54-inch, 5,300 linear feet of 48-inch transfer force main; 83 linear feet of
96" tunnel; and approximately 293 linear feet of 60-inch gravity interceptor for a
future connection, in conformity with the project plan, specifications, and other
supporting data subsequently filed and approved by the Department of
Environment and Natural Resources.
I certify that the construction of the above referenced project was observed to be built within
substantial compliance and intent of the approved plans and specifications.
Signature 4�Registration No. /E/ 7 K
Date z3 O
Send to: Constriction Grants & Loans
DENR/DWQ
1633 Mail Service Center
Raleigh, NC 27699-1633

e C,OF W A T�CRQ
`�, Y
ia
r
Mr. Allan Williams
Director of Water Resources
City of Greensboro
PO Box 3136
Greensboro, NC 27402-3136
SUBJECT: Compliance Evaluation Inspection .
City of Greensboro — North Buffalo WWTP
NPDES Permit No. NCO024325
Guilford County
Dear Mr. Williams:
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Coleen Sullins. Director
Division of Water Quality
20 July 2007
A Compliance Evaluation Inspection (CEI) was performed on the City of Greensboro North Buffalo wastewater treatment
plant on Thursday, July 19, 2007 by Corey Basinger of the Winston-Salem Regional Office. Barbara Hicks and Martie
Groome represented the City for the inspection. The inspection consisted of two parts: an on -site inspection of the
treatment facility and a file review. The following are the findings from the subject inspection.
I. Permit
The NPDES permit for the City of Greensboro North Buffalo WWTP became effective February 1, 2007 and expires on
June 30, 2011. The permitted components of the wastewater treatment plant include: influent flow measurement, flow
equalization, two (2) mechanical bar screens, grit removal, four (4) primary clarifiers, two (2) trickling filters, and two (2)
activated treatment trains. One train consists of a 4 MGD aeration tank with fine bubble diffused air and two final
clarifiers. The second treatment train consists of four (4) activated sludge tanks with nitrification and five (5) secondary
clarifiers. The two trains combine and empty into the tertiary sand filters, chlorination, and step post aeration. Primary and
waste activated sludge is pumped from the City of Greensboro North Buffalo WWTP to the T.Z Osborne WWTP for
dewatering and incineration.
II. Records/Reports
A review of the laboratory reports and Discharge Monitoring Reports (DMRs) for the City of Greensboro North Buffalo
WWTP revealed no discrepancy between the generated data and the data submitted to DWQ. A copy of the laboratory data
is kept on file at the wastewater plant. Maintenance records were deemed compliant with permit conditions. Operations
records include all sample analyses and process control tests that are performed daily. Calibration records for field
parameters (pH, DO, and Temp), as well as flow meter calibration records, were evaluated and deemed compliant. The
records/reports were very comprehensive and well organized.
III. Facility Site Review
The treatment system consists of influent flow measurement, two (2) mechanical bar screens, grit removal, four (4) primary
clarifiers, two (2) trickling filters, and two (2) activated treatment trains. One train consists of a 4 MGD aeration tank with
fine bubble diffused air and two final clarifiers. The second treatment train consists of four (4) activated sludge tanks with
nitrification and five (5) secondary clarifiers. The two trains combine and empty into the tertiary sand filters, chlorination,
and step post aeration. The facility no longer has flow equalization. Primary and waste activated sludge is pumped from
the City of Greensboro North Buffalo WWTP to the T.Z Osborne WWTP for dewatering and incineration.
Primary #2 was out of service at the time of inspection for maintenance/repair. The #3 Screw Pump was also out of service
One
for routine service and repair. The new 70 mgd pump station was under construction at the time of inspection. NprthCarolina
Naturally
North Carolina Division of Water Quality 585 Waughtown Street Phone [phone] Customer Service
Winston-Salem Regional Office Winston-Salem, NC 27107 Fax [phone]
Internet: www.ncwaterquality.org
An Equal Opportunity/Affirmative Action Employer — 50% Recycled/10% Post Consumer Paper

.p
Mr. Allan Williams
July 20, 2007
Page 2 of 3
IV. Effluent / Receiving Stream
The WWTP discharges to North Buffalo Creek (Class C-NSW in the Cape Fear River Basin). The receiving waters
appeared clear of solids and debris on the date of the subject inspection. There was no evidence of any previous bypasses.
V. Flow Measurement
Effluent flow is measured using a Parshall flume in conjunction with a Milltronics II Open Channel Monitor ultrasonic flow
meter, flow recorder, and totalizer. The flow meter is calibrated by WWTP staff by comparing it to the gauge reading and
then adjusting the meter accordingly. The flow meter is electronically calibrated at least once a year. The most recent
calibration was conducted on July 11, 2007.
VI. Self -Monitoring Pro ram
All monitoring was performed in compliance with the NPDES Permit No. NC0024325. Effluent limitation violations
occurring during the review period of May 2006 through April 2007 have been addressed via prior correspondence from the
Division.
All upstream and downstream sampling and monitoring is performed by the Upper Cape Fear River Basin Association.
VII. Compliance Schedules
The facility has twenty-four (24) months from the effective date of the permit to comply with the new Total Residual
Chlorine effluent limitation of 17 ug/1.
VIII. Laboratory
All of the sample analyses are conducted by the City of Greensboro Laboratory, TriTest or Meritech, Inc.
IX. Operations and Maintenance
Operations and maintenance at the time of the subject inspection were deemed satisfactory. Equipment operations are
monitored using a SCADA system. Routine maintenance is performed and documented for all components of the
wastewater system. Operations and Maintenance logs were very comprehensive.
X. Sludge Utilization/Disposal
Waste activated sludge is pumped to the City of Greensboro T.Z. Osborne WWTP for dewatering and incineration.
XI. Pretreatment
The City has an approved pretreatment program that is evaluated separately from this inspection.
XII. Stormwater
The City of Greensboro North Buffalo WWTP has a general sormwater permit for the municipal wastewater treatment
plant. The certificate of coverage is number NCG110004. The required Stormwater Pollution Prevention Plan was
available at the wastewater plant. The required monitoring had been performed semi-annually as required by the permit.
XIII. Sewer Overflow, Pollution Prevention & Multimedia
Not evaluated during this inspection.

Mr. Allan Williams
July 20, 2007
Page 3 of 3
XIV. Other
The previous inspection was conducted by Corey Basinger on April 19, 2006. The back-up ORCs are James Burleson and
Ed Osborne.
If you have any questions or concerns regarding this report, please contact Corey Basinger at 336-771-4963.
Sincerely,
Steve W. Tedder
Water Quality Supervisor
Cc: Barbara Hicks, PO Box 3136, G'boro, NC 27402
Don Howard, City of Greensboro, PO Box 3136, G'boro, NC 27402
Martie Groome, City of Greensboro, PO Box 3136, G'boro, NC 27402
Guilford County Health Department
Central Files
GO
7O

Form Approved
fA+.
Q
OMB No.2040-0057
Approval Expires
8-31-98
IJnited States Environmental Protection Agencv. Washington. D.C.. 20460
Section A: National Data System Coding
Transaction Code NPDES No. Yr/Mo/Day Inspection Type Inspector FacilityType
N 5 NC0024325 07-07-19 C S 1
Facility Evaluation Rating BI QA ..........Reserved...........
5 N N
Section B: Facility Data
Name and Location of Facility Inspected:
Entry Time:
Permit Effective
0845 lus.
Date: Feb 1, 2007
City of Greensboro — North Buffalo
Wastewater Treatment Plant
Exit Time:
Permit Expiration
1300 hrs.
Date: June 30, 2011
Name(s) of On -Site Representative(s): Title(s): Phone No(s):
Ms. Barbara Hicks ORC [phone]
Ms. Martie Groome Lab Supervisor [phone]
Name, Address of Responsible Official:
Title: Director of Water Resources
Mr. Allan Williams
City of Greensboro
Phone No. 336-373-2055
Contacted? No
PO Box 3136
Greensboro, NC 27402
Section C: Areas Evaluated During Inspection
* Permit a Flow Measurement s Operations/Maintenance
© Records/Reports e Self -Monitoring Program • Sludge Handling/Disposal
a Facility Site Review o Effluent/Receiving Waters o Stormwater
Section D: Summary of Findings/Comments
Pernvt..................................Current permit expires June 30, 2011.
Records/Reports..................The operators daily records are maintained as per permit conditions.
Facility Site Review ............ All system components were operating properly.
Effluent/Receiving Waters.. Receiving stream showed no visible adverse impacts on date of inspection.
Flow Measurement..............No problems noted. All calibration records present.
Self -Monitoring Program.... The DMR's are submitted as required by NPDES permit
Operations/Maintenance ..... No problems were noted with respect to operations and maintenance.
Sludge Disposal ..................Solids pumped to T.Z. Osborne WWTP for dewatering and incineration.
(SEE DATA SUMMARY ATTACHED FOR THE PERIOD 05/06 — 04/07)
Name s) and Signature(s) of Inspectors:
Agency/Office/Telephone:
Date:
A
DWQ / WSRO / [phone]
a2,�, LA_" Zvd 7—
Signature o eviewer:
Agency/Office:
Date:
DWQ / WSRO / [phone]
C

Permit: NCO024325 Owner - Facility: North Buffalo Creek WWTP
Inspection Date: 07/19/2007 Inspection Type: Compliance Evaluation
Compliance Schedules
Yes
No
NA
NE
Is there a compliance schedule for this facility?
❑
n
®
n
Is the facility compliant with the permit and conditions for the review period?
®n
n
n
Comment:
Operations & Maintenance
Yes
No
NA
NE
Is the plant generally clean with acceptable housekeeping?
MOOD
Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable Solids,
pH, DO, Sludge R]
n
n
Judge, and other that are applicable?
Comment:
Yes
No
NA
NE
(If the present permit expires in 6 months or less). Has the permittee submitted a new application?
n
n
®
n
Is the facility as described in the permit?
®n
n
n
# Are there any special conditions for the permit?
n
n
n
Is access to the plant site restricted to the general public?
m
n
n
n
Is the inspector granted access to all areas for inspection?
Comment:
Record Keeping
Yes
No
NA
NE
Are records kept and maintained as required by the permit?
®
n
n
n
Is all required information readily available, complete and current?
n
n
n
Are all records maintained for 3 years (lab. reg. required 5 years)?
ISO
n
Are analytical results consistent with data reported on DMRs?
®n
❑
n
Is the chain -of -custody complete?
®❑
n
n
Dates, times and location of sampling
Name of individual performing the sampling
Results of analysis and calibration
Dates of analysis
Name of person performing analyses
Transported COCs
Are DMRs complete: do they include all permit parameters?
®n
n
n
Has the facility submitted its annual compliance report to users and DWQ?
®n
n
n
(If the facility is = or > 5 MGD permitted flow) Do they operate 24/7 with a certified operator on each shift? ® n ❑ n
Page # 3

Permit: NCO024325 Owner - Facility: North Buffalo Creek WNIrP
Inspection Date: 07/19/2007 Inspection Type: Compliance Evaluation
Record Keeping
Yes
No
NA
NE
Is the ORC visitation log available and current?
■
n
n
n
Is the ORC certified at grade equal to or higher than the facility classification?
®n
n
n
Is the backup operator certified at one grade less or greater than the facility classification?
®n
n
n
Is a copy of the current NPDES permit available on site?
■
n
n
n
Facility has copy of previous year's Annual Report on file for review?
■
n
n
n
Comment:
Effluent Pipe
Yes
No
NA
NE
Is right of way to the outfall properly maintained?
n
n
n
Are the receiving water free of foam other than trace amounts and other debris?
■
n
n
n
If effluent (diffuser pipes are required) are they operating properly?
n
❑
®
❑
Comment:
Flow Measurement - Influent
Yes
No
NA
NE
# Is flow meter used for reporting?
®
n
❑
❑
Is flow meter calibrated annually?
®n
n
n
Is the flow meter operational?
®
❑
❑
❑
(If units are separated) Does the chart recorder match the flow meter?
®
n
n
n
Comment: Calibrated 7/11/2007
Flow Measurement - Effluent
Yes
No
NA
NE
# Is flow meter used for reporting?
®
❑
❑
❑
Is flow meter calibrated annually?
®
❑
❑
❑
Is the flow meter operational?
®
❑
❑
❑
(If units are separated) Does the chart recorder match the flow meter?
®n
n
n
Comment:
Chemical Feed
Yes
No
NA
NE
Is containment adequate?
®
❑
❑
n
Is storage adequate?
®
❑
n
Are backup pumps available?
®❑
n
n
Is the site free of excessive leaking?
®
n
n
n
Comment:
Pump Station - Influent
Yes
No
NA
NE
Page # 4

Permit: NC0024325
Inspection Date: 07/19/2007
Owner- Facility: North Buffalo Creek WWTP
Inspection Type: Compliance Evaluation
Pump Station - Influent
Yes
.No
NA
NE
Is the pump wet well free of bypass lines or structures?
n
n
n
Is the wet well free of excessive grease?
n
n
n
■
Are all pumps present?
❑
❑
n
Are all pumps operable?
n
n
n
Are float controls operable?
nnn®
Is SCADA telemetry available and operational?
n
n
n
Is audible and visual alarm available and operational?
n
n
n
la
Comment: New pump station under construction.
Bar Screens
Yes
No
NA
NE
Type of bar screen
a.Manual
n
b.Mechanical
Are the bars adequately screening debris?
❑
❑
❑
Is the screen free of excessive debris?
®n
n
❑
Is disposal of screening in compliance?
®
❑
❑
❑
Is the unit in good condition?
PM❑
❑
❑
Comment:
. .. _
Yes
No
NA
NE
Type of grit removal
a.Manual
n
b.Mechanical
Is the grit free of excessive organic matter?
®n
n
n
Is the grit free of excessive odor?
®n
n
n
# Is disposal of grit in compliance?
®n
❑
Comment:
Primary Clarifier
Yes
No
NA
NE
Is the clarifier free of black and odorous wastewater?
®
❑
❑
n
Is the site free of excessive buildup of solids in center well of circular clarifier?
IN
D
❑
❑
Are weirs level?
®
n
n
n
Is the site free of weir blockage?
®
n
n
n
Page # 5

Permit: NC0024325 Owner - Facility: North Buffalo Creek VVVVFP
Inspection Date: 07/19/2007 Inspection Type: Compliance Evaluation
Primary Clarifier
Yes
No
NA
NE
Is the site free of evidence of short-circuiting?
®
n
n
n
Is scum removal adequate?
®
n
n
n
Is the site free of excessive floating sludge?
®n
n
n
Is the drive unit operational?
®
n
n
n
Is the sludge blanket level acceptable?
®n
n
n
Is the sludge blanket level acceptable? (Approximately''/< of the sidewall depth)
®
n
n
n
Comment: Primary #2 out of service for repair/maintenance.
Secondary Clarifier
Yes
No
NA
NE
Is the clarifier free of black and odorous wastewater?
®
n
n
n
Is the site free of excessive buildup of solids in center well of circular clarifier?
a
n
n
n
Are weirs level?
®❑
n
n
Is the site free of weir blockage?
®n
n
n
Is the site free of evidence of short-circuiting?
®n
n
n
Is scum removal adequate?
®n
n
n
Is the site free of excessive floating sludge?
n
n
n
Is the drive unit operational?
❑
n
❑
Is the return rate acceptable (low turbulence)?
®
n
n
n
Is the overflow clear of excessive solids/pin floc?
®
❑
n
n
Is the sludge blanket level acceptable? (Approximately '/< of the sidewall depth)
®n
n
n
Comment:
Trickling Filter
Yes
No
NA
NE
Is the filter free of ponding?
®
n
n
n
Is the filter free of leaks at the center column of filter's distribution arms?
®n
n
n
Is the distribution of flow even from the distribution arms?
®❑
n
n
Is the filter free of uneven or discolored growth?
®n
n
n
Is the filter free of sloughing of excessive growth?
®n
n
n
Are the filter's distribution arms orifices free of clogging?
®
n
n
n
Is the filter free of excessive filter flies, worms or snails?
n
n
n
Comment:
Aeration Basins
Yes
No
NA
NE
Page # 6

Permit: NCO024325 Owner - Facility: North Buffalo Creek VWVfP
Inspection Date: 07119/2007 Inspection Type: Compliance Evaluation
Aeration Basins
Yes
No
NA
NE
Mode of operation
Ext.
Air
Type of aeration system
Diffused
Is the basin free of dead spots?
®n
n
n
Are surface aerators and mixers operational?
®❑
n
n
Are the diffusers operational?
®
n
n
n
Is the foam the proper color for the treatment process?
®n
n
n
Does the foam cover less than 25% of the basin's surface?
®n
n
n
Is the DO level acceptable?
®
❑
n
n
Is the DO level acceptable?(1.0 to 3.0 mg/1)
®n
n
n
Comment:
Filtration (High Rate Tertiary)
Yes
No
NA
NE
Type of operation:
Down flow
Is the filter media present?
®n
n
n
Is the filter surface free of clogging?
n
n
n
Is the filter free of growth?
®n
n
n
Is the air scour operational?
®n
n
n
Is the scouring acceptable?
®n
n
n
Is the clear well free of excessive solids and filter media?
®n
n
n
Comment:
Standby Power
Yes
No
NA
NE
Is automatically activated standby power available?
®
n
n
❑
Is the generator tested by interrupting primary power source?
®
❑
n
n
Is the generator tested under load?
®n
n
n
Was generator tested & operational during the inspection?
n
n
n
IN
Do the generator(s) have adequate capacity to operate the entire wastewater site?
®
n
n
n
Is there an emergency agreement with a fuel vendor for extended run on back-up power?
®
n
n
❑
Is the generator fuel level monitored?
®n
n
n
Comment:
Pumps-RAS-WAS
Yes
No
NA
NE
Are pumps in place?
■
n
n
n
Page # 7

Permit: NC0024325 Owner- Facility: North Buffalo Creek WWTP
Inspection Date: 07/19/2007 Inspection Type: Compliance Evaluation
Pumps-RAS-WAS
Yes
No
NA
NE
Are pumps operational?
®
❑
❑
❑
Are there adequate spare parts and supplies on site?
®
❑
n
n
Comment:
Influent Sampling
Yes
No
NA
NE
# Is composite sampling flow proportional?
❑
❑
❑
Is sample collected above side streams?
®
❑
❑
❑
Is proper volume collected?
®❑
❑
0-
Is the tubing clean?
®❑
❑
❑
Is proper temperature set for sample storage (kept at 1.0 to 4.4 degrees Celsius)?
®❑
❑
n
Is sampling performed according to the permit?
®
n
n
❑
Comment:
Effluent Sampling
Yes
No
NA
NE
Is composite sampling flow proportional?
®
n
❑
❑
Is sample collected below all treatment units?
®
❑
n
❑
Is proper volume collected?
®n
❑
n
Is the tubing clean?
®
❑
❑
❑
Is proper temperature set for sample storage (kept at 1.0 to 4.4 degrees Celsius)?
®
❑
❑
❑
Is the facility sampling performed as required by the permit (frequency, sampling type representative)?
®
❑
❑
❑
Comment:
Disinfection -Liquid
Yes
No
NA
NE
Is there adequate reserve supply of disinfectant?
®
n
❑
❑
(Sodium Hypochlorite) Is pump feed system operational?
p
❑
❑
n
Is bulk storage tank containment area adequate? (free of leaks/open drains)
®
n
n
n
Is the level of chlorine residual acceptable?
®❑
n
❑
Is the contact chamber free of growth, or sludge buildup?
®
❑
❑
❑
Is there chlorine residual prior to de -chlorination?
❑
❑
®
❑
Comment:
_Upstream / Downstream Sampling
Yes
No
NA
NE
Is the facility sampling performed as required by the permit (frequency, sampling type, and sampling location)? ®
❑
❑
❑
Comment: Cape Fear River Basin Association conducts up/downstream monitoring
Page # 8

Permit: NCO024325
Inspection Date: 07/19/2007
Owner - Facility: North Buffalo Creek WWiP
Inspection Type: Compliance Evaluation
Solids Handling Equipment
Is the equipment operational?
Is the chemical feed equipment operational?
Is storage adequate?
Is the site free of high level of solids in filtrate from filter presses or vacuum filters?
Is the site free of sludge buildup on belts and/or rollers of filter press?
Is the site free of excessive moisture in belt filter press sludge cake?
The facility has an approved sludge management plan?
Comment: All solids are sent to TZOsborne for incineration.
Yes No NA NE
®nnn
nn®n
nn®n
n❑®n
❑ ❑ ® ❑
nn■n
171 ❑ ® ❑
Page # 9

Office of the City Manager
City of Greensboro
February 8, 2007
Mr. Matt Matthews
NC Division of Water Quality
1617 Mail Service Center
Raleigh, NC 27699-1617
F?ECEIVED
I N.C. Dent. Of E"
FEB14 2007,
4"llns!cn•ualem
GREENSBOR0 F�` }.Ona1 OifiCe-
Certified Mail 7005 1820 0006 7147 8648
Return Receipt Requested
Subject: Delegation of Signature Authority
NPDES Program Signatory Authority
Pretreatment Program Signatory Authority
City of Greensboro, North Carolina
Guilford County
Dear Mr. Matthews:
In response to the State of North Carolina (and Environmental Protection Agency) requirements
to submit Delegation of Signatory Authority for the NPDES Program and Pretreatment Program,
the City of Greensboro hereby submits the following delegation of signatory authority. The.
signatory delegations listed herein will be effective immediately and will remain in effect until
further notice.
NPDES Signatory Authority
Signatory Authority for all NPDES Program documents for NPDES Permit ,N QO- 2_432j_,&orth)
Bu_ffa1- POT%) and NPDES Permit NCO047384 (T. Z. Osborne POTW) including but not
limited to: NPDES Permit Applications, Discharge Monitoring Reports, Annual POTW Reports,
Annual Sludge Reports, is hereby delegated to the Director of Water Resources and if necessary,
further delegated to the Water Reclamation Manager. In addition, Signatory Authority for the
Annual Sludge Report is further delegated to the Operator in Responsible Charge (ORC) of the
T. Z. Osborne Publicly Owned Treatment Works (POTW).
Signatory Authority for all NPDES Program documents for NPDES Permit NC0081426
(Mitchell Water Plant) and NPDES Permit NCO081671 (Townsend Water Plant) including but
not limited to: NPDES Permit Applications and Discharge Monitoring Reports, is hereby
delegated to the Director of Water Resources and if necessary, further delegated to the Water
Supply Manager.
One Governmental Plaza, P.O. Box 3136, Greensboro, NC 27402-3136 [phone]
2317

Page 2 Signatory Authority Delegation Letter from Mitchell Johnson to NC-DWO
Febritary 8, 2007
Pretreatment Program Signatory Authority
Section 2 of the City of Greensboro Sewer Use and Pretreatment Ordinance states:
"Except as otherwise provided herein, the Industrial Waste Section of the Utilities Department
(former name of Water Resources Department). shall administer, implement and enforce the
provisions of this ordinance. Any powers granted to or ditties imposed upon the City Nlanager,
Public Utilities Director (former name of Water Resources Director), Wastewater Treatment
Manager or Industrial Waste Section Supervisor may be delegated to other City personnel. "
Signatory Authority for all Pretreatment Program documents for NPDES Permit NCO024325
(North Buffalo POTW) and NPDES Permit NCO047384 (T. Z. Osborne POTW) including but
not limited to: Pretreatment Annual Report, Headworlcs Analysis Submittal, Industrial Waste
Survey Submittal, Long Term Monitoring Plan Submittal, Significant Industrial User Permits,
Enforcement Response Plan Submittal, Notices of Violation/Other Enforcement Actions, is
hereby delegated to the Director of Water Resources and further delegated to the Water
Reclamation Manager, Laboratory/Industrial Waste Supervisor and Pretreatment Coordinator.
Specific Enforcement Action signatory delegation will be in accordance with the most current
DWQ approved Enforcement Response Plan on file.
If you have any questions, please contact Allan Williams at 336-373-2055.
Sincerely
Mitc ell E: Johnson
City Manager
cc: Allan Williams, Director of Water Resources
;Don Howard, Water Reclamation Manager
Steve Drew, Water Supply Manager
Martie Groome, Laboratory and Industrial Waste Section Supervisor
Sharon H. Miller, Pretreatment Coordinator
Jeff Poupart, DWQ PERCS Unit (provided in 2006 Pretreatment Annual Report)
Steve Tedder, DWQ Winston-Salem Regional Office Supervisor

��� �� �Z � � � j
�d�z�f �=���, � i� �
N

CC: PSB-NPDES
Guilford County Health Dept.
Central Files
WSRO
SOC PRIORITY PROJECT: Yes
If Yes, SOC No.
To: Permits and Engineering Unit
Water Quality Section
Attention: Charles Weaver
Date: 30 November 2005
NPDES STAFF REPORT AND RECOMMENDATION
County: Guilford
Permit No. NCO024325
PART I - GENERAL INFORMATION
1. Facility and Address: City of Greensboro
North Buffalo WWTP
2199 White Street
Greensboro, NC
2. Date of Investigation: 28 November 2005
3. Report Prepared by: W. Corey Basinger, EE-II
WSRO-SWP
4. Persons Contacted and Telephone Number:
Barbara Hicks, ORC
336-373-5913
No X
5. Directions to Site:
6. Discharge Point(s), List for all discharge points:
Latitude: 360 06' 34" Longitude: 790 44' 53"
USGS Quad No. C20SW USGS Quad Name Greensboro
7. Site size and expansion area consistent with application?
X Yes No If No, explain:
8. Topography (relationship to flood plain included): Above

flood plain
9. Location of nearest dwelling: >1,000 feet
10. Receiving stream or affected surface waters:
North Buffalo Creek
a. Classification: C NSW
b. River Basin and Subbasin No.: 03-06-02
C. Describe receiving stream features and pertinent
downstream uses: agricultural, residential, commercial
Part II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of Wastewater to be permitted: 16.0 MGD
(Ultimate Design Capacity)
b. What is the current permitted capacity of the Waste
Water Treatment facility? 16.0 MGD
C. Actual treatment capacity of the current facility
(current design capacity)? 16.0 MGD
d. Date(s) and construction activities allowed by previous
Authorizations to Construct issued in the previous two
years. N/A
e. Please provide a description of existing or
substantially constructed wastewater treatment
facilities; Facility consists of influent flow
measurement, two mechanical bar screens, grit removal,
four primary clarifiers, two trickling filters, and two
activated treatment trains. One train consists of a 4
MGD aeration tank with fine bubble diffused air and two
final clarifiers. The second train consists of four
activated sludge tanks with nitrification and five
secondary clarifiers. The two trains combine into the
tertiary sand filters, chlorination, and step post
aeration. Primary and waste activated sludge is pumped
to TZ Osborne WWTP for dewatering and incineration.
f. Please provide a description of proposed wastewater
treatment facilities. N/A
g. Possible toxic impacts to surface waters: None known
h. Pretreatment Program (POTWs only):
in development approved X
should be required not needed

NPDES Permit Staff Report
2. Residuals handling and utilization/disposal scheme:
a. If residuals are being land applied, please specify
DWQ-AP Permit No.
Residuals Contractor
Telephone No.
b. Residuals stabilization: PSRP PFRP
Other
C. Landfill:
d. Other disposal/utilization scheme (Specify):
Incineration
3. Treatment plant classification (attach completed rating
sheet) .
4. SIC Code (s) : 4952
Primary 01 Secondary 02
Main Treatment Unit Code: 0 4 1 x 6
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant
Funds or are any public monies involved. Yes
2. Special monitoring or limitations (including toxicity)
requests: None at this time.
3. Important SOC, JOC or Compliance Schedule dates: (Please
indicate) N/A
Date
Submission of Plans and Specifications
Begin Construction
Complete Construction

NPDES Permit Staff Report
PART IV - EVALUATION AND RECOMMENDATIONS
WSRO recommends reissuance of NPDES Permit NC0024325 in
accordance with Division guidelines.
EnvironmenV)&l Engi
�r
Water Quality Regional Supervisor
Date
Date
Z�ys-

WATER POLLUTION CONTROL SYSTEM OPERATORS
CERTIFICATION CONLVIISSION
CLASSIFICATION
RATING SHEET FOR WATER POLLUTION CONTROL SYSTEMS
FACILITY INFORMATION:
NAME OF FACILITY: tJ60-T(f E-c tr-r-A-two
MAU-INGADDRESS. UW-171F S��T
COUNTY:'
CONTACT PERSON: Da"1 9v4-J4*-6 TELEPHONE: (33�)
PERMIT NO: �CDO 21'3 2-5- Check One: NC 2< WQ HEALTH DP__
ORC : TELEPHONE: 37 3 - 5 91 3
RATING INFORMATION: (Before completing this section, please refer to pages 2-4)
PERMITTED FLOW: 14 •y MGD BNR? YES -< NO
CHECK CLASSIFICATION: WASTEWATER: 1 2 3 4
COLLECTION: 1 2 3 4
SPRAY IRRIGATION SUBSURFACE LAND APPLICATION
PHYSICAL/CHEMICAL GRADE I GRADE II
RATED
BY: 6 „J"7- t- REGION: kJ5 P" DATE: -3d Ale Z o-s
REGIONAL OFFICE TELEPHONE NUMBER: (336) 7 i �` (��� EXT: 7-00