NC0026051_Historical information_20181231

March 21, 2018
Subject:
Dear Ms. Brixey:
This authorization results in no increase in design or permitted capacity and is awarded for
the construction of the following specific modifications:
Water Resources
ENVIRONMENTAL QUALITY
Ms. Stephanie Brixey
Interim Deputy Director/POTW Director
Durham County
5926 Highway 55 East
Durham, North Carolina 27713
In addition to the appropriate construction items approved in this Authorization to
Construct, all other items stated in the application were deemed as maintenance events and require
no approval.
This ATC is issued in accordance with Part III, Paragraph A of NPDES Permit No.
NC00026051 issued effective December 1, 2011 and shall be subject to revocation unless the
wastewater treatment facilities are constructed in accordance with the conditions and limitations
specified in Permit No. NC0026051.
Replacement of existing four (4) 75 HP brush aerators in BNR Train No.2 with
two (2) membrane disc diffuser systems and two (2) 125 HP rotary lobe blowers
with VFD and minimum flow capacity of 1500 SCFM each at 9.2 psi, piping and
controls; in conformity with the project plans, specifications, and other supporting
documentation comprising the ATC Permit Application package submitted to the
Department of Environmental Quality.
State of North Carolina | Environmental Quality | Water Resources
512 N Salisbury Street 11617 Mail service Center | Raleigh, North Carolina 27699-1617
Phone [phone]
Authorization to Construct
A to C No. 026051A03
Durham County
Triangle WWTP
NPDES Permit No. NC0026051
MICHAEL S REGAN
Secretary
LINDA CULPEPPER
Inlei m Dtrectoi
ROY COOPER
Governor
A letter of request for an Authorization to Construct was received January 30, 2018 by the
Division of Water Resources (Division), and final plans and specifications for the subject project
have been reviewed and found to be satisfactory. Authorization is hereby granted for the
construction of modifications to the existing 12 MGD Triangle WWTP, with discharge of treated
wastewater into the Northeast Creek in the Cape Fear River Basin.
The Permittee must also employ a certified back-up operator of the appropriate type and
grade to comply with the conditions of T15A:8G.O2O2. The ORC of the facility must visit each
Class I facility at least weekly and each Class II, III and IV facility at least daily, excluding
weekends and holidays, must properly manage the facility, must document daily operation and
maintenance of the facility, and must comply with all other conditions of T15A:8G.O2O2.
During the construction of the proposed additions/modifications, the Permittee shall
continue to properly maintain and operate the existing wastewater treatment facilities at all times,
and in such a manner, as necessary to comply with the effluent limits specified in the NPDES
Permit.
Ms. Stephenie Bnxey, In!
March 21, 2018
Page 2 of 3
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 as may
be required by the Division, such as the construction of additional or replacement wastewater
treatment or disposal facilities.
A copy of the project plans and specifications shall be maintained on file by the
Permittee for the life of the facility.
The sludge generated from these treatment facilities must be disposed of in accordance
with G.S. 143-215.1 and in a manner approved by the Division.
Upon classification of the facility by the Certification Commission, the Permittee shall
employ a certified wastewater treatment plant operator to be in responsible charge (ORC) of the
wastewater treatment facilities. The operator must hold a certificate of the type and grade at least
equivalent to or greater than the classification assigned to the wastewater treatment facilities by
the Certification Commission.
It is the Owner’s responsibility to ensure that the as-constructed project meets the
requirements of all applicable regulations and statutes, the ATC Permit Application package, and
all of the requirements contained herein. Failure to comply may result in penalties in accordance
with North Carolina General Statute §143-215.6A through §143-215.6C.
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 NPDES Permit and the ATC Permit Application package.
Mail the Certification to: Division of Water Resources, WQ Permitting - NPDES, 1617 Mail
Service Center, Raleigh, NC 27699-1617.
Deputy Director
The Raleigh Regional Office, telephone number 919-791-4200, shall be notified at least
forty-eight (48) hours in advance of operation of the installed facilities so that an on site inspection
can be made. Such notification to the regional supervisor shall be made during the normal office
hours from 8:00 a.m. until 5:00 p.m. on Monday through Friday, excluding State Holidays.
Deputy Director
Prior to entering into any contract(s) for construction, the recipient must have obtained all
applicable permits from the State.
The issuance of this ATC does not preclude the Pennittee from complying with any and
all statutes, rules, regulations, or ordinances which may be imposed by other government agencies
(local, state, and federal) which have jurisdiction.
If you have any questions or need additional information, please contact Trupti Desai at
telephone number [phone].
ecopy: Mr. Kurtis B. Proffit, P.E.
Black & Veatch International Corporation
Email: [e-mail]
NPDES File
Sincerely,
(2^
Linda Culpepper
Interim Director, Division of Water Resources
Ms. Stepheme Brixey, Int^lfc
March 21, 2018
Page 3 of 3
You are reminded that it is mandatory for the project to be constructed in accordance with
the North Carolina Sedimentation Pollution Control Act, and when applicable, the North Carolina
Dam Safety Act. In addition, the specifications must clearly state what the contractor’s
responsibilities shall be in complying with these Acts.
Without Engineer’s Certificate attached:
cc: Durham County Health
With Engineer’s Certificate attached:
cc: DWR Raleigh Regional Office, Water Quality Programs
Central Files
Engineer’s Certification
Signature Registration No.
Date
Mail this Certification to:
I certify that the construction of the above referenced project was observed to be built within
substantial compliance, intent and in conformity with all applicable regulations and statutes and
the project plans, specifications, and other supporting documentation comprising the
Authorization to Construct Permit Application package.
Replacement of existing four (4) 75 HP brush aerators in BNR Train No.2 with
two (2) membrane disc diffuser systems and two (2) 125 HP rotary lobe blowers
with VFD and minimum flow capacity of 1500 SCFM each at 9.2 psi, piping and
controls; in conformity with the project plans, specifications, and other supporting
documentation comprising the ATC Permit Application package submitted to the
Department of Environmental Quality.
Durham County
Triangle Wastewater Treatment Plant
Authorization to Construct No. 026051A03
March 21, 2018
NPDES Permit No. NC0026051
Attn: Trupti Desai
Complex Permitting Unit
DEQ/DWR/Water Quality Programs
1617 Mail Service Center
Raleigh, NC 27699-1617
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 modifications and improvements to the Triangle Wastewater Treatment
Plant, located in Durham County, hereby state that, to the best of my abilities, due care and
diligence was used in the observation of the following construction:
ROY COOPER
MICHAEL S. REGAN
LINDA CULPEPPER
March 28. 2018
Subject:
Dear Ms. Brixey:
2. A Performance Annual Report for July 2016-June 2017 is available at the dconc.gov website.
6. The facility consists of the following units observed during the inspection:
Division of Water Resources, Raleigh Regional Office, Water Quality Operations Section
1628 Mail Service Center, Raleigh, NC 27699-1628
Location: 3800 Barrett Drive, Raleigh, NC 27609
3. The facility is currently permitted to discharge up to 12 MGD into Northeast Creek, a WS-IV
Nutrient Sensitive Water (NSW) in the Cape Fear basin. The facility’s monthly average flow
for the 2017 calendar year was approximately 4.6 MGD.
4. The plant is classified as a WW-4 wastewater facility. Shawn Davis is designated as the
primary Operator in Responsible Charge (ORC), and has a WW-4 certification. Gregory
Johnson, Stephanie Brixey, Michael Garver, Roy Harris and Roy Lyons are designated backup
Operators (bORC) and also have WW-4 Certifications. Detailed daily operation log books are
detailed and are kept on-site going back at least three years.
1. The current pennit expired in April 2016. A renewal application was submitted on September
10, 2015. A copy of the most recently issued (expired) pennit was available.
5. The plant is certified to analyze ammonia, BOD. TRC, conductivity, DO, Fecal Coliform, pH,
temperature and TSS (Certification #671). Calibration logs were present. pH buffers were
within dates. Fecal and BOD incubators and refrigerators were kept at proper temperatures.
Other parameters are analyzed by Mertiech, with the exception of toxicity, which is split at
ETS labs. November 2017 DMR data was compared to lab bench sheets; no data transcription
errors were noted.
Compliance Evaluation Inspection
Durham Co. Triangle WWTP
NPDES Pennit No. NC0026051
Durham County
www.ncwaterquality.org
Phone: [phone]
Fax: [phone]
Water Resources
ENVIRONMENTAL QUALITY
On March 5, 2018, Jason Robinson of the Raleigh Regional Office (RRO) conducted a compliance
evaluation inspection of the subject facility. The assistance provided by you. Mr. Shawn Davis and
Mr. Gregory Johnson was appreciated. The inspection report is attached. The following observations
were made:
Ms. Stephanie Brixey
Interim Utility Division Manager-POTW Director
5926 NC Highway 55 East
Durham, NC 27713
5.
1.
2.
3.
4.
Disinfection. Poste Aeration, and Reclaimed Water
• Two UV banks, 56 bulbs in each bank. Alternated, one bank was operating during
site visit.
® Post-Aeriation - DO increased before discharge.
• Reclaimed Water - Old effluent Pump Station used as reclaimed water wet-well.
Amount of effluent discharged is dependent upon how much reclaimed water is in
the wet well. When the reclaimed water drops, discharge is diverted to the
reclaimed wet-well for use.
® Composite sampler - Sample kept at ~5° C.
© Effluent Flow Meter - Calibration expires on 9/28/19.
Headworks/Preliminary Treatment:
• Two Mechanical bar screens
• Odor Control System - Sodium hypochlorite and sodium hydroxide added
• Influent pump station (6 pumps)
• Parshall Flume and Flow meter
• Mechanical grit removal
• Sampler
Filtration
Five shallow, high-rate tertiary, traveling bridge sand filters that operate via gravity.
Secondary Clarification
Wastewater diverted to clarifiers through a splitter box. Four approximately one-
million gallons, 16-feet deep Tat-bottomed secondary clarifiers. Two are kept online at
all times, as was the case during the inspection. The sludge return tubes (ports) are
approximately 12 inches off the clarifier floor, and sludge blankets are kept at
approximately 2 feet). Sodium Aluminate is added just upstream of clarifiers to the
splitter box for remaining phosphorus removal. Bottom sludge recycled to front of
BNR via Recycled Activated Sludge (RAS) pumps
BNT Train #2 was down during the inspection due to a broken rotor. And
Authorization to Construct has been requested to add diffuse flow to this train. Based
on the results, diffuse flow may be considered on Trains #1 and #3.
Five-state Biological Nutrient Removal Treatment (3 Trains)
Anaerobic Selector
Primary Anoxic Reactor
Aerobic Reactor (Oxidation Ditch)
Secondary Anoxic Reactor - Methanol added as supplemental carbon source for
denitrification
Reaeration Reactor
Sludge Handling Facility
o Two Sludge Holding Tanks - Polymer Added
o Three Centrifuges
© Truck-loading area
® Sludge is hauled to McGill Environmental
Sincerely.
Cc: Central Files w/attachment
Raleigh Regional Office w/attachment
7. The right of way to the effluent discharge to Northeast Creek were properly maintained. The
effluent appeared clear and free of solids. There were no visible detrimental impacts to the
receiving stream.
Danny Smit
Regional Supervisor
Raleigh Regional Office
Stand-bv Power
4 Generators are tested monthly under load and inspect twice a year by National Power.
Attachments
Compliance Inspection Report
Chemical Additions
All chemicals are properly stored and have secondary containment.
SCADA
SCADA system can monitors and can operate the entire plant. SCADA can be
accessed in front office, sludge building and BNR building.
This facility was found to be compliant with NPDES permit conditions as a result of this inspection.
The plant is well maintained and documentation was found to be detailed, organized, and complete. If
you have any questions regarding the attached reports or any of the findings, please contact Jason
Robinson at: [phone] (or email: [e-mail]).
EPA
Section A. National Data System Coding (i.e., PCS)
Inspection Typeyr/mo/day Inspector Fac TypeNPDES
2 I17 19NC002605118/03/05
I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I i621
Bl QA ■Reserved-
72 8073
Section B: Facility Data
Entry Time/Date Permit Effective Date
13/02/0110 00AM 18/03/05
Triangle VWVTP
Exit Time/Date Permit Expiration Date5926 NC Hwy 55 E
18/03/0512 00PM 16/04/30Durham NC 27713
Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s)Other Facility Data
Name, Address of Responsible Official/Title/Phone and Fax Number
Contacted
Yes
Section C: Areas Evaluated During Inspection (Check only those areas evaluated)
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)Date
Jason T Robinson RRO WO///
1Page#
Name and Location of Facility Inspected (For Industrial Users discharging to POTW. also include
POTW name and NPDES oermit Number)
■ Permit H Flow Measurement H Operations & Maintenance | Records/Reports
IS Sludge Handling Disposal ■ Effluent/Receiving Waters SI Laboratory
Joseph R Pearce 5926 NC Hwy 55 E Durham NC 27713/Deputy Director. Engineering
and Environmental Services/919-560-9035/9195448590
Form Approved.
OMB No. 2040-0057
Approval expires 8-31-98
///
Gregory W Johnson/ORC/919-560-9038/
Michael-A Garver/ORC/919-697-0261/
Roy Glenn Harris/ORC/919-337-2407/
Shawn Demetris Davis/ORC/919-544-8230/
Stephanie A Brixey/ORC/919-560-9034/
&
United States Environmental Protection Agency
Washington. D C. 20460
Water Compliance Inspection Report
H
N
Inspection Work Days
671
12L
Agency/Office/Phone and Fax Numbers
Transaction Code
1
Facility Self-Monitoring Evaluation Rating
70 u
20UI11
I I I74 75l I I I I I I I
3 L i8^j
71 u
2Page#
Date
27/^/^ '
Signature of Management Q ^Reviewer z/ Aq^ncy>€)fficeJPhone and Fax Nurr^bers
EPA Form 3560-yfRev 9-94) Previous editions are obsolete.
1(Cont.)31
2.A Performance Annual Report for July 2016-June 2017 is available at the dconc.gov website.
6.The facility consists of the following units observed during the inspection:
3Page#
12l
NPDES
NC0026051
yr/mo/day
18/03/05
4.
5.
Secondary Clarification
Wastewater diverted to clarifiers through a splitter box. Four approximately one-million gallons, 16-feet
deep flat-bottomed secondary clarifiers. Two are kept online at all times, as was the case during the
inspection. The sludge return tubes (ports) are approximately 12 inches off the clarifier floor, and
sludge blankets are kept at approximately 2 feet). Sodium Aluminate is added just upstream of
Headworks/Preliminary Treatment:
• Two Mechanical bar screens
• Odor Control System - Sodium hypochlorite and sodium hydroxide added
• Influent pump station (6 pumps)
• Parshall Flume and Flow meter
• Mechanical grit removal
• Sampler
Permit: NC0026051
Inspection Date: 03/05/2018
J17J11
Owner - Facility: Tnang|e WWTP
Inspection Type: Compliance Evaluation
BNT Train #2 was down during the inspection due to a broken rotor. And Authorization to Construct
has been requested to add diffuse flow to this train. Based on the results, diffuse flow may be
considered on Trains #1 and #3.
4. The plant is classified as a V\N\l-4 wastewater facility. Shawn Davis is designated as the primary
Operator in Responsible Charge (ORC), and has a WW-4 certification. Gregory Johnson. Stephanie
Brixey, Michael Garver, Roy Harris and Roy Lyons are designated backup Operators (bORC) and also
have WW-4 Certifications. Detailed daily operation log books are detailed and are kept on-site going
back at least three years.
Inspection Type
18 LJ
Five-state Biological Nutrient Removal Treatment (3 Trains)
1. Anaerobic Selector
2. Primary Anoxic Reactor
3. Aerobic Reactor (Oxidation Ditch)
Secondary Anoxic Reactor - Methanol added as supplemental carbon source for denitrification
Reaeration Reactor
5. The plant is certified to analyze ammonia. BOD. TRC, conductivity, DO, Fecal Coliform. pH,
temperature and TSS (Certification #671). Calibration logs were present. pH buffers were within dates.
Fecal and BOD incubators and refrigerators were kept at proper temperatures. Other parameters are
analyzed by Mertiech, with the exception of toxicity, which is split at ETS labs. November 2017 DMR
data was compared to lab bench sheets: no data transcription errors were noted.
3. The facility is currently permitted to discharge up to 12 MGD into Northeast Creek, a WS-IV Nutrient
Sensitive Water (NSW) in the Cape Fear basin. The facility's monthly average flow for the 2017
calendar year was approximately 4.6 MGD.
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
1. The current permit expired in April 2016. A renewal application was submitted on September 10,
2015. A copy of the most recently issued (expired) permit was available.
4Page#
Owner - Facility:
Inspection Type:
Triangle WWTP
Compliance Evaluation
Filtration
Five shallow, high-rate tertiary, traveling bridge sand filters that operate via gravity.
Sludge Handling Facility
• Two Sludge Holding Tanks - Polymer Added
• Three Centrifuges
• Truck-loading area
• Sludge is hauled to McGill Environmental
Stand-by Power
4 Generators are tested monthly under load and inspect twice a year by National Power.
Chemical Additions
All chemicals are properly stored and have secondary containment.
SCADA
SCADA system can monitors and can operate the entire plant. SCADA can be accessed in front
office, sludge building and BNR building.
Permit: NC0026051
Inspection Date: 03/05/2018
clarifiers to the splitter box for remaining phosphorus removal. Bottom sludge recycled to front of BNR
via Recycled Activated Sludge (RAS) pumps
Disinfection, Poste Aeration, and Reclaimed Water
• Two UV banks, 56 bulbs in each bank. Alternated, one bank was operating during site visit.
• Post-Aeriation - DO increased before discharge.
• Reclaimed Water - Old effluent Pump Station used as reclaimed water wet-well. Amount of
effluent discharged is dependent upon how much reclaimed water is in the wet well. When the
reclaimed water drops, discharge is diverted to the reclaimed wet-well for use.
• Composite sampler - Sample kept at -S0 C.
• Effluent Flow Meter - Calibration expires on 9/28/19.
7. The right of way to the effluent discharge to Northeast Creek were properly maintained. The
effluent appeared clear and free of solids. There were no visible detrimental impacts to the receiving
stream.
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?
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
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?
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:
Flow Measurement - Influent Yes No NA NE
H # 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? @
Comment:
Pump Station - Influent Yes No NA NE
E Is the pump wet well free of bypass lines or structures?
Is the wet well free of excessive grease?
Are all pumps present?
5Page#
E
B
H
®
Permit: NC0026051
Inspection Date: 03/05/2018
■
■
■
■
■
■ (If the facility is - or > 5 MGD permitted flow) Do they operate 24/7 with a certified operator
on each shift?
anna
■
■
a
■
Owner - Facility: Trian9le WWTP
Inspection Type: Compliance Evaluation
Permit: NC0026051
Inspection Date: 03/05/2018
Pump Station - Influent Yes No NA NE
Are all pumps operable?
Are float controls operable?
Is SCADA telemetry available and operational?
■ Is audible and visual alarm available and operational?
Comment:
Bar Screens Yes No NA NE
Type of bar screen
a.Manual
b.Mechanical
H Are the bars adequately screening debris?
■ Is the screen free of excessive debris?
B Is disposal of screening in compliance?
B Is the unit in good condition?
Comment:
Grit Removal Yes No NA NE
Type of grit removal
a.Manual
Bb.Mechanical
m Is the grit free of excessive organic matter?
B Is the grit free of excessive odor?
B # Is disposal of grit in compliance?
Comment:
Laboratory Yes No NA NE
Are field parameters performed by certified personnel or laboratory?
S Are all other parameters(excluding field parameters) performed by a certified lab?
B # Is the facility using a contract lab?

n Incubator (Fecal Coliform) set to 44.5 degrees Celsius+/- 0.2 degrees?
@ Incubator (BOD) set to 20.0 degrees Celsius +/-1.0 degrees?
6Page#
# Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees
Celsius)?
Owner - Facility:
Inspection Type:
Triangle WWTP
Compliance Evaluation
Laboratory Yes No NA NE
Comment:
Operations & Maintenance Yes No NA NE
Is the plant generally clean with acceptable housekeeping?
Comment:
Permit Yes No NA NE
■
Is the facility as described in the permit?H
# 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:
Nutrient Removal Yes No NA NE
# Is total nitrogen removal required? B
# Is total phosphorous removal required? B
Type
# Is chemical feed required to sustain process?
Is nutrient removal process operating properly?®
Comment:
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?
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?H
7Page#
Does the facility analyze process control parameters for ex MLSS, MCRT. Settleable
Solids, pH DO Sludge Judge, and other that are applicable?
Bonn
Bonn
B
H
H
B
B
El
B
Permit: NC0026051
Inspection Date: 03/05/2013
B
B
Owner - Facility: Triangle WWTP
Inspection Type: Compliance Evaluation
(If the present permit expires in 6 months or less). Has the permittee submitted a new
application?
Biological

Permit: NC0026051
Inspection Date: 03/05/2018
Yes No NA NESecondary Clarifier
Is the return rate acceptable (low turbulence)?
■ Is the overflow clear of excessive solids/pin floc?
■ Is the sludge blanket level acceptable? (Approximately % of the sidewall depth)
Comment:
Pumps-RAS-WAS Yes No NA NE
■ Are pumps in place?
■ Are pumps operational?
■ Are there adequate spare parts and supplies on site9
Comment:
Filtration (High Rate Tertiary)Yes No NA NE
Down flowType of operation:
s Is the filter media present?
® Is the filter surface free of clogging?
H Is the filter free of growth9
n Is the air scour operational?
s Is the scouring acceptable?
■ Is the clear well free of excessive solids and filter media9
Comment:
Chemical Feed Yes No NA NE
m Is containment adequate?
E Is storage adequate?
s Are backup pumps available?
s Is the site free of excessive leaking?
Comment:
Disinfection - UV Yes No NA NE
H Are extra UV bulbs available on site?
H Are UV bulbs clean?
a Is UV intensity adequate?
Fi Is transmittance at or above designed level?
8Page#
Owner - Facility:
Inspection Type:
Triangle WWTP
Compliance Evaluation
Disinfection - UV Yes No NA NE
Is there a backup system on site?■
Is effluent clear and free of solids?■
Comment:
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/l)
Comment:
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? IH
Comment:
Flow Measurement - Effluent Yes No NA NE
# Is flow meter used for reporting?a
Is flow meter calibrated annually?B
Is the flow meter operational?E
(If units are separated) Does the chart recorder match the flow meter? 3
Comment:
Solids Handling Equipment Yes No NA NE
Is the equipment operational?a
Is the chemical feed equipment operational?E
Is storage adequate?H
9Page#
Permit: NC0025051
Inspection Date: 03/05/2018
Owner - Facility: Triangle VWVTP
Inspection Type: Compliance Evaluation
Yes No NA NESolids Handling Equipment
The facility has an approved sludge management plan?
Comment:
Yes No NA NEStandby Power
Is the generator fuel level monitored’’
Comment:
10Page#
Is automatically activated standby power available’’
Is the generator tested by interrupting primary power source’’
Is the generator tested under loadP
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’’
Owner - Facility:
Inspection Type:
■
■
■
■
■
■
■
■
■
s
®
Permit: NC0026051
Inspection Date: 03/05/2018
Triangle WWTP
Compliance Evaluation
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 press7
Is the site free of excessive moisture in belt filter press sludge cake7
NCState:
iMbiSignature: Date:
Permit# NC0026051
County:
YOU MUST SUBMIT A SEPARATE FORM FOR EACH TYPE AND CLASSIFICATION OF SYSTEM:
ww
IV
Print Full Name: Shawn Davis
Certificate Grade: IV
7 Effective Date:
BACKUP ORC
Print Full Name: Greg Johnson
Email Address:
Fax:[phone] Email: [e-mail]
Revised 4/2016
Mail, fax or email
ORIGINAL to:
WATER POLLUTION CONTROL SYSTEM OPERATOR DESIGNATION FORM (WPCSOCC)
NCAC ISA 8G .0201
Mail or Fax
a COPY to:
Signature: ___________________
"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 .0204 and failing to do so can result in
Disciplinary Actions by the Water Pollution Control System Operators Certification Commission."
Washington
943 Washington Sq. Mall
Washington, NC 27889
Fax:[phone]
Phone: [phone]
Wilmington
127 Cardinal Dr.
Wilmington, NC 28405-2845
Fax: [phone]
Phone:[phone]
Winston-Salem
45 W. Hanes Mall Rd.
Winston-Salem, NC 27105
Fax: [phone]
Phone: [phone]
Raleigh
3800 Barrett Dr.
Raleigh, NC 27609
Fax:[phone]
Phone: [phone]
Asheville
2090 US Hwy 70
Swannanoa, NC 28778
Fax: [phone]
Phone: [phone]
Fayetteville
225 Green St., Suite 714
Fayetteville, NC 28301-5043
Fax: [phone]
Phone:[phone]
Certificate Type: WW
Email Address: [e-mail]
OPERATOR IN RESPONSIBLE CHARGE (ORC)
Work Phone: [phone]
Certificate #: 992460
Work Phone: [phone]
Certificate #: 27421
Facility Type:
Facility Grade:
Facility Name: Durham County Triangle WWTP
Durham
Press TAB to enter information
Permittee Owner/Officer Name: Stephanie Brixey - Deputy Director of E&ES/POTW Director
Mailing Address: 5926 NC Hwy 55 East Phone: [phone]
City: Durham state: NC zip: 27713
Email Address: [e-mail]
Mooresville
610 E. Center Ave., Suite 301
Mooresville, NC 28115
Fax: [phone]
Phone: [phone]
Certificate Type: WW Certificate Grade: IV
[e-mail]
Signature: Effective Date: f
"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 ORC as set forth in 15A NCAC 08G .0204 and failing to do so can result in
Disciplinary Actions by the Water Pollution Control System Operators Certification Commission."
WPCSOCC, 1618 Mail Service Center,
Raleigh, NC 27699-1618
Page 2WPCSOCC Operator Designation Form (continued)
NC0026051Facility Name: Durham County Triangle WWTP Permit #:
BACKUP ORC
Certificate Grade: IV
BACKUP ORC
Certificate Grade: IV
BACKUP ORC
Certificate Grade: IV
BACKUP ORC
Mike Garver
Ce icate Grade: IV
Revised 4/2016
Print Full Name: Stephanie Brixey
Certificate Type: WW
Email Address: [e-mail]
Work Phone: [phone]
Certificate #: 991624
Work Phone: [phone]
Certificate #: 996769
Work Phone: [phone]
Certificate #: 005218
Work Phone: [phone]
Certificate #: 1000636
Print Full Name:
Certificate Type: WW
Email Address: [e-mail]
Signature: 3 Effective 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 ORC as set forth in ISA NCAC 086 .0204 and failing to do so can result in
Disciplinary Actions by the Water Pollution Control System Operators Certification Commission."
Print Full Name: RoV Ly°ns
Certificate Type: WW
Email Address:
Signature: r-jMkXb x Effective Date:
"/ 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 ORC as set forth in ISA NCAC 086.0204 and failing to do so can result in
Disciplinary Actions by the Water Pollution Control System Operators Certification Commission."
s p h i 11 i p s @dconc.gov
Signature: ""T ) \ A Effective Date:g --------
'7 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 ORC as set forth in ISA NCAC 086 .0204 and failing to do so con result in
Disciplinary Actions by the Water Pollution Control System Operators Certification Commission."
[e-mail]___________________ _
Signature: _________________________________Effective Date:
'7 certify that I agree to my de&gnatiorras 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 ORC as set forth in ISA NCAC 086.0204 and failing to do so can result in
Disciplinary Actions by the Water Pollution Control System Operators Certification Commission."
I
Print Full Name: Stephen Phillips
Certificate Type: WW
Email Address:
Robinson, Jason
Jason/Ted,
BNR Train No. 3 has four working rotors.
Please let us know if you have any questions.
Sincerely,
Kyie Manning, PE | Senior Project Manager
i
CAUTION: External email. Do not click links or open attachments unless verified. Send all suspicious email as an attachment to
i«:
As we discussed on the phone, several weeks ago one of the BNR Train No. 1 rotors catastrophically failed. On 5/16/18,
we relocated one of the working rotors in BNR Train No. 2 to BNR Train No. 1. This has resulted in BNR Train No. 1
having four working rotors. However, BNR Train No. 2 only has two working rotors at this time. We have not needed to
operate BNR Train No. 2 in over a year.
We will be installing a diffused aeration system in BNR Train No. 2 to replace all four rotors. The Authorization to
Construct from DEQ is attached. The project will be bid out and awarded in the next 2 to 4 months.
From:
Sent:
To:
Cc:
Subject:
Attachments:
5926 Highway 55 East
Durham, North Carolina 27713
Office: [phone] | Cell [phone] | Fax [phone]
Manning, Kyle F. <[e-mail]>
Thursday, May 17, 2018 1:51 PM
Robinson, Jason; Cashion, Ted
Brixey, Stephanie; Johnson, Gregory W.
[External] TWWTP (NPDEA Permit No. NC0026051)
Authorization to Construct BNR Train No 2.pdf
DURHAM COUNTY
Engineering and
Envtronmental SendeesiP
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Durham County Triangle Wastewater Treatment Facility
Stormwater Pollution Prevention Plan
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Bernard, Jane
STEPHANIE BRIXEY | DEPUTY DIRECTOR / POTW DIRECTOR
Eo
PLEASE NOTE: OUR MAIN OFFICE NUMBER IS [phone]
Danny & Jason,
i
CAUTION: External email. Do not click links or open attachments unless verified. Send all suspicious email as an attachment to
From:
Sent:
To:
Subject:
Attachments:
From: Brixey, Stephanie
Sent: Thursday, July 12, 2018 2:21 PM
To: [e-mail]; Robinson, Jason <[e-mail]>
Subject: Sodium Hypochlorite Spill - NCG110054
Yesterday we had a 12% sodium hypochlorite spill and some entered into our Stormwater
Outfall 2. I contacted Thad Valentine per a conversation I had with Bethany Georgoulias. An
operator overfilled a day tank. We estimated 1200 gallons was spilled but most was captured
by the building's floor drain which was valve closed. Approximately 100 gallons reached a
stormwater drain that discharges to our Outfall 2. A berm was made at outfall 2 and an
additional berm was made further down in a UT to Northeast Creek. Chlorine residual in those
areas were 10 ppm. We set up pumps to pump the contaminated water back into the plant
and dechlorinated the area with sodium bisulfite tablets. Any excess tablets that were not
dissolved in the cleanup was removed from the area and not left to prevent any toxicity issues
to aquatic life. Chlorine residual was checked downstream, approximately 150' from
stormwater outfall 2 when first discovered and no chlorine was detected. Our record of
release per our SP3 is attached for your records. Please let me know what additional
5926 Highway 55 East
Durham, North Carolina 27713
Office: [phone]
Cell [phone] | Fax [phone]
Email: [e-mail]
Brixey, Stephanie <[e-mail]>
Friday, July 13, 2018 9:17 AM
Bernard, Jane
[External] FW: Sodium Hypochlorite Spill - NCG110054
SKM_C454el8071213120.pdf
DURHAM COUNTY
Engineenng and
Environmental Services
J
STEPHANIE BRIXEY | DEPUTY DIRECTOR I POTW DIRECTOR
Eo
PLEASE NOTE: OUR MAIN OFFICE NUMBER IS [phone]
2
Thanks.
Stephanie
information is needed and if there is another form I need to complete to fulfill the 5 day
reporting requirement.
5926 Highway 55 East
Durham, North Carolina 27713
Office: [phone]
Cell [phone] | Fax [phone]
Email: [e-mail]
DURHAM COUNTY
Engineering and
Environmental Services
DURHAM COUNTY
Triangle Wastewater Treatment Plant
■<31 PERFORMANCE ANNUAL REPORT
JULY 2017 —JUNE 2018
Raleigh
*
Durham County TWWTP Service Area
Stormwater:
NCG110054
DURHAM
COUNTY
NC k
1881
Permits:
Wastewater
Treatment Plant:
NC0026051
—J
s:®:
I..
..r-
Reclaimed Water:
WQ0032821
” . J®
T -
Collection System:
WQCS00038
Durham County I
Engineering
, &
Environmental Services
)
The Durham County
wastewater collection and
treatment system serves
over 10,000 residential,
commercial, and industrial
customers in Southeast
Durham County, including
the Research Triangle Park.
Triangle Wastewater
Treatment Plant
5926 NC Hwy. 55 E.
Durham, NC 27713
[phone]
urham County Utilities is successful at
maintaining a healthy environment and
cost-effective utility system because the
responsibility is shared amongst all who live
and work in Durham County's Triangle Wastewater
Treatment Plant service area. More often than not,
sewer spills are reported by vigilant and watchful
citizens who contact us with concerns. We heavily
rely on our citizens to bring issues to our attention so
we may respond and rectify any possible overflows and
environmental hazards quickly and efficiently. Call us
if you see or experience
any of the following: drain
backups, water leaking
from manhole lids or
cleanouts, or unusual
odorous wet areas.
Owned and Operated
by.
Contact
Stephanie Bnxey
Deputy Director
_ __" .
-
■
1
Collection System
4
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Biosolids System
Reuse Water
In the past 12 months Durham County had two reportable
spills.
• On February 27, 2018, a spill estimated at 6,000 gallons
of wastewater occurred resulting from root intrusion into
a sewer lateral line.
• On March 13, 2018, a spill estimated at 250 gallons of
wastewater occurred due to a discharge valve being left
partially open while check valve maintenance was being
performed.
Waste water
(TWWTP)
■
Projects &
Rehabilitation
Installation of
a grinder at
the SIC Pump
Station.
I
t B
The Durham County Utilities Division prides itself on provid­
ing a high level of customer service. All commercial and
residential customers' questions and concerns are
responded to in a timely manner. If you have a question or
concern regarding the collection system, services or any
item covered in this report, please call [phone].
The addition of a grinder at the Stirrup iron
Creek (SIC) ^.ump Station to decrease solids
buildup in the wet well;
- The connection of the Hopson Road force main
allowing for the abandonment of 2,600 feet of
deteriorated pipe; • .
St earn bank stabilize tian a ous d higl -priorhy
gravity sewer main; and
Additioi;;?! survey work to refine the S’C Pump
Station sewer basin's r'lydraulic model.
■■■■hroughout the last year the County
.. ■ continued its efforts to rehabilitate aging
S coliechon system infrastructure and
S increase sanitary sewer capacity to facilitate
economic growth in our service area. Some of these
completed projects hKhide:
urham County owns and maintains a
wastewater collection system which includes 95
miles of gravity sewer, 9 miles of pressurized
force mains, and 13 pump stations.
ti
1
Al 2
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If
I
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T he TWWTP generates waste biological residuals
I (approximately 600 million wet pounds per year),
which are dewatered by centrifuges. The dewatered
cake (approximately 14.5 million wet pounds per year)
is transported to McGill’s Composting, where it
undergoes further biological treatment to produce a
Class A biosolid. These biosolids are beneficially
used as soil amendments in commercial landscaping
and agricultural activities.
a
..
he Triangle
w Treatment Plant
operates a reuse water
system. Some of the uses of this
water include: landscape irrigation,
industrial cooling, industrial process
water and sewer cleaning.
Approximately 110.7 million gallons of
reuse water was distributed during
the fiscal year.
III
I
- i
I
I s
■
. wiil be upgraded with new pum .
cc • J pane k tc i ■ sn • sewes iiy.
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Treatment System & Process
ly i-eated.
II a
Ultraviolet (UV) Bulb System
i suppor
jcess..
Ultraviolet
......
rr creating
of5,.0mg/l Monthly Avg. Permit Limit 200cfu/100ml Monthly Avg. Permit Limit
2.2mg/l 1.4cfu/i00ml
BIOCHEMICAL OXYGEN DEMAND FECAL COLIFORM
1.0mg/l Monthly Avg. Permit limit30mg/l Monthly Avg. Permit limit
<2.5mg/l
AMMONIA-NITROGENTOTAL SUSPENDED SOLIDS
111,207 lbs. Annual Permit load limit 8,432 lbs. Annual Permit Load Limit
80,907 lbs.
3,309 lbs.
TOTAL NITROGEN TOTAL PHOSPHORUS
Clarifier
The
treat;
Disinfection
is used to
■
l|
::
in- Influent Pump Station [IPS)
e biologf
sized tor 12 millior. gallons per avenge fie?.'.
’• •_ Fine Screens are used ic
such as grit, sand egg shells, etc
used in the biological treatment pro
fez®
.joy pno->phj-i!:. that is remaining
Methanol i'-. used tn this polishing
le denitrification treatment
The Terti>y Filter s are next in t
remaining unsettled biomass in t
Ti Chemical Polishing ; rpy .
after the bmlogical tmurnent proc
process to add 'additional BCD to
I disease
without
harmful by products
treatment process
dissolved oxygen to the treated
wastewater to meet required
permit limits before it is
discharged to Ncrtheast Creek.
Th-? Five Stage.Biofogicoi Nutrient System . '
takes place, such as removing ammonia
denitrification os'orr-
used tc pump raw wastewater
The IPS is
h orn j ti?-w ■ Ie
mate rials are washed
il
The TWWTP was
compliant in all
sampling events
for the past year,
while treating 1.55 '
billion gallons of
wastewater.
.al biological treatment
through nitrificatior
emovai of phosphorus.
ove fine material
AH of the organic
JF
are where the biomass
■wastewater and then is returned to trw BNR f
Tic?'. whicli all
treatment process.
parated from the treated
further treatment.
nt pro
remove
ter ?
/ '
U ; ?
Tj
p
■ B
1.
August 31,2018
Notification.
Lab & Pretreatment
Program
Certification:
fl
si
• Baby wipes
• Cleaning wipes
• Feminine hygiene products
• Paper towels
• Tissues
• Trash of any kind
PLEASE
DO NOT FLUSH
Grease
being
cleaned
from a san­
itary sewer
manhole.
South Regional Library
4505 S. Alston Ave.
Clerk to the Board
200 East Main St.
Main Library
300 N. Roxboro St.
Website
www.dconc.gov
EVERYONE,
including YOU,
can help prevent
overflows!
I certify under penalty of law
that this report is complete and
accurate to the best of my
knowledge. I further certify that
this report has been made
available to the users or cus­
tomers of the named system
and that those users have
been notified of its availability.
r he Triangle Wastewater Treatment Plants
(TWWTP) laboratory staff collects and analyzes
wastewater samples as required by the NPDES
permit and the reclaim water permit. Currently, the
laboratory is certified by tine Division of Water
Resources Laboratory Certification Branch to
analyze ammonia, biochemical oxygen demand,
total residual chlorine, conductivity, dissolved
oxygen fecal coliform. pH. temperature, and total
suspended solids. Staff determines the age and
health of the activated sludge and identifies
microorganisms, such as amoebae bactena
ciliates. flagellates, nematodes, rotrfiers. and water
bears.Do your part to prevent overflows by
following these simple guidelines:
overflows can cause health
hazards, damage homes and businesses,
threaten the environment, and local
waterways and are costly to clean up
for wastewater utilities.
The TWWTP implements an Industrial
Pretreatment Program (IPP) to control pollutants
which may cause pass through or interfere with
the treatment plant's processes, which may
contaminate sewage sludge, or potentially be
hazardous to worker's health and safety.
Currently, tlrere are forty-eight permitted industries
that are regularly inspected and monitored to
ensure their discharges meet specific permit limits.
Fourteen of these industries are Significant
Industrial Users (SIUs). Biosafety Laboratones in
our service area have also been identified and
fifteen are currently peimitted. Several of tlie
Industrial Pretreatment Permit holders are
required to certify that their fadlrty has followed
biosafety procedures consistent with the fifth
edition of the Biosafety in Microbiological and
Biomedical Laboratones US DHHS -PHS -CDC
and -NIH for the deactivation of Biosafety Level 1.
2. 3 or 4 materials pnor to discharge to the sewer
system.
=> Collect fats, oils and grease (F.O.G.)
in a container and dispose of it in
the garbage.
=> Place food scraps in the garbage
and use garbage disposals in your
home as little as possible.
=x> DO NOT flush wipes. Even if they
say “flushable”, disposable wipes
will clog pipes. They are not
biodegradable like toilet paper
which breaks down at a much quicker
rate, and can cause issues in the
sanitary sewer.
Place ALL personal hygiene products
and diapers in the garbage.
DO NOT pour hazardous materials
down the drain.
=i> Call 811 or visit www.nc811.org
BEFORE you dig and protect your
underground utilities from damage.
=> DO NOT plant trees and shrubs, or
erect structures such as fences on
or near manholes, sewer lines and
easements.
■■ ’ “ft
ft Ji
.....; ft;:....:—:
This Performance Annual
Report covering July 1.
2017 through June 30.
2018, was forwarded to
the NC Department of
Environmental Quality.
Public Notice of the report
was advertised in the
Durham Herald Sun
newspaper and is availa­
ble for review at the
following locations:
Stephanie Bnxey
Deputy Director
::::::
Grease
clogged line.
- ■
• “V
Bernard, Jane
Jane;
Can you please contact Stephanie and enter the information into BIMS, if appropriate?
rb
1
From:
Sent:
To:
Subject:
From: Valentine, Thad
Sent: Thursday, July 12, 2018 9:24 AM
To: Smith, Danny <[e-mail]>; Bolich, Rick <[e-mail]>
Subject: Spill Notification
I received a call from Stephanie Brixey yesterday reporting a spill of Sodium Hypo Chloride. Stephanie estimated that the
quantity was less than lOOgal and it ran to one of their outfalls. I told her that someone from DWR would be contacting
her about the release and her # is [phone]
Bolich, Rick
Thursday, July 12, 2018 3:25 PM
Bernard, Jane
FW: Spill Notification
Thad Valentine
Senior Environmental Specialist
Division of Energy, Mineral and Land Resources-Land Quality Section
Department of Environmental Quality
[phone]
I
Utilities Division
zKugust 27. 2018
Re: Durham County TWWTP FYI7-18 Performance Annual Report
To Whom It May Concern:
If you have any questions or concerns, please contact me at [phone] or e-mail [e-mail].
Sincerely,
Enclosures
SAB/cs
Engineering and
Environmental Services
cc: Jay Gibson, PE, General Manager
Greg Johnson, Utility Superintendent
Danny Smith, NCDENR DWR-Raleigh Regional Office - c-mail
Stephanie Brixey
Deputy Director
As required by House Bill 1160, the Durham County Engineering & Environmental Services Department,
Utilities Division, is submitting three copies of the 2017-2018 Performance Annual Report for your review.
Systems Performance Annual Report
North Carolina Department of Environmental Quality
1617 Mail Service Center
Raleigh. NC 27699-1617
DURHAM
COUNTV
1881
r 'J
Robinson, Jason
Jason,
STEPHANIE BRIXEY | DEPUTY DIRECTOR / POTW DIRECTOR
Eo
PLEASE NOTE: OUR MAIN OFFICE NUMBER IS [phone]
1
CAUTION: External email. Do not click links or open attachments unless verified. Send all suspicious email as an attachment to
I just called and left you a message but wanted to follow-up with an email. The Triangle
WWTP, NC0026051, has a weekly permit violation for BOD for the first week of
September. The effluent result for 9/3/18 is 18.1 mg/l and for 9/5/18 is 5.3 mg/l that
averaged out to 11.7 mg/l for the week. The weekly permit limit for this time of year is 7.5
mg/l. At this time we have no idea why the BOD was high as all other parameters are normal
as well as operations. I emailed Tom McKinney, Rick Bolich, and Danny Smith yesterday to
inform them of a daily maximum violation for BOD for the reclaim, WQ0032821, for 9/3/18. If
you have any questions or need additional information please let me know.
Thanks,
Stephanie
DURHAM COUNTY
Engineenng and
Environmental Services
Brixey, Stephanie <[e-mail]>
Wednesday, September 12, 2018 1:43 PM
Robinson, Jason
Smith, Danny; Johnson, Gregory W.; Davis, Shawn D.; Moore, Amy
[External] NC0026051 - TWWTP BOD Weekly Violation Notification
£
Kl C, O Z^g'5I
From:
Sent:
To:
Cc:
Subject:
5926 Highway 55 East
Durham, North Carolina 27713
Office: [phone]
Cell [phone] | Fax [phone]
Email: sbrixey(5)dconc.qov
-- Uf k Uv\/\I ITi
Manuel, Vanessa
Vanessa, do you review Durham Co's DMRs? If so, see below fyi...
Jason,
STEPHANIE BRIXEY | DEPUTY DIRECTOR / POTW DIRECTOR
1
CAUTION: External email. Do not click links or open attachments unless verified. Send all suspicious email as an attachment to
I just called and left you a message but wanted to follow-up with an email. The Triangle
WWTP, NC00260S1, has a weekly permit violation for BOD for the first week of
September. The effluent result for 9/3/18 is 18.1 mg/l and for 9/5/18 is 5.3 mg/l that
averaged out to 11.7 mg/l for the week. The weekly permit limit for this time of year is 7.5
mg/l. At this time we have no idea why the BOD was high as all other parameters are normal
as well as operations. I emailed Tom McKinney, Rick Bolich, and Danny Smith yesterday to
inform them of a daily maximum violation for BOD for the reclaim, WQ0032821, for 9/3/18. If
you have any questions or need additional information please let me know.
Thanks,
Stephanie
From:
Sent:
To:
Subject:
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: Brixey, Stephanie <[e-mail]>
Sent: Wednesday, September 12, 2018 1:43 PM
To: Robinson, Jason <[e-mail]>
Cc: Smith, Danny <[e-mail]>; Johnson, Gregory W. <[e-mail]>; Davis, Shawn D.
<[e-mail]>; Moore, Amy <[e-mail]>
Subject: [External] NC0026051 - TWWTP BOD Weekly Violation Notification
Robinson, Jason
Wednesday, September 12, 2018 3:23 PM
Manuel, Vanessa
FW: [External] NC00260S1 - TWWTP BOD Weekly Violation Notification
Jason T. Robinson, P.E.
Raleigh Regional Office
Water Quality Regional Operations
Division of Water Resources, DEQ
919-791-4200
PLEASE NOTE: OUR MAIN OFFICE NUMBER IS [phone]
2
5926 Highway 55 East
Durham, North Carolina 27713
Office: [phone]
Cell [phone] | Fax [phone]
Email: [e-mail]
DURHAM COUNTY
Engineering and
Environmental Services
United States Environmental Protection Agency
EPA
Section A: National Data System Coding (i.e., PCS)
Inspection Typeyr/mo/day Inspector Fac TypeNPDES
2 3 I NC0026051 18/03/05
111111 111111111111111111 i 111111 11111111111 r>621
Bl QA •Reserved-
71 |8072I73N
Section B: Facility Data
Entry Time/Date Permit Effective Date
13/02/0110 00AM 18/03/05
Triangle WWTP
Exit Time/Date Permit Expiration Date5926 NC Hwy 55 E
18/03/0512:00PM 16/04/30Durham NC 27713
Other Facility Data
$
Contacted
Yes
Section C: Areas Evaluated During Inspection (Check only those areas evaluated)
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
v^
DateName(s) and Signature(s) of Inspector(s)Agency/Office/Phone and Fax Numbers
DWR/RRO WQ/919-791-4200/Jason T Robinson
iPage#
9'c-5e
7
r7i11
9 Permit
fl Sludge Handling Disposal
Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include
POTW name and NPDES permit Number)
fl Flow Measurement fl Operations & Maintenance | Records/Reports
fl Effluent/Receiving Waters fl Laboratory
Greg Sanchez,4309 Emperor Blvd Ste 110 Durham NC 27703/Managing
Member/919-941-5745/
Form Approved.
OMB No. 2040-0057
Approval expires 8-31-98
Washington. D.C. 20460
Water Compliance Inspection Report
Id
Inspection Work Days
671
Name. Address of Responsible Official/Title/Phone and Fax Number
Transaction Code
1 121
Facility Self-Monitoring Evaluation Rating
70 u m74 75i 1111111
20U
P ■ r<
r l/v
(See attachment summary)
•Y1
Name(s) of Onsite Representative(s)/Titles(s)/Phone And Fax Number(s)
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■Gteeory W Johncor#Qn0919-5e00038/
Michael A Garver/ORC/919-697-0261/
Boy-Glean-falarritWORC/OlO 716 2460A
Shawn Demetris Davis/ORC/919-560-9036/
Stephanie A Brixey/ORC/919-560-9034/
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Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date
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3L NC0026051 18/03/05
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
2. A Performance Annual Report for July 2016-June 2017 is available at the dconc.gov website.
The facility consists of the following units observed during the inspection:6.
3Page#
J11 12[
Owner - Facility:
Inspection Type:
Triangle VWVTP
Compliance Evaluation
Headworks/Preliminary Treatment:
• Two Mechanical bar screens
• Odor Control System - Sodium hypochlorite and sodium hydroxide added
• Influent pump station (S lumps)
• Parshall Flume and Flow meter
• Mechanical grit removal
• Sampler
1.
2.
3.
4.
5.
Secondary Clarification
Wastewater diverted to clarifiers through a splitter box. Four approximately one-million gallons, 16-feet
deep flat-bottomed secondary clarifiers. Two are kept online at all times, as was the case during the
inspection. The sludge return tubes (ports) are approximately 12 inches off the clarifier floor, and
sludge blankets are kept at approximately 2 feet). Sodium Aluminate is added just upstream of
Permit: NC0026051
inspection Date: 03/05/2018
J17
Five-state Biological Nutrient Removal Treatment (3 Trains)
Anaerobic Selector
Primary Anoxic Reactor
Aerobic Reactor (Oxidation Ditch)
Secondary Anoxic Reactor - Methanol added as supplemental carbon source for denitrification
Reaeration Reactor
BNT Train #2 was down during the inspection due to a broken rotor. And Authorization to Construct
has been requested to add diffuse flow to this train. Based on the results, diffuse flow may be
considered on Trains #1 and #3.
Inspection Type
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4. The plant is classified as a WW-4 wastewater facility. Shawn Davis is designated as the primary
Operator in Responsible Charge (ORC), and has a WW-4 certification. Gregory Johnson, Stephanie
Brixey, Michael Garver, Roy Harris and Roy Lyons are designated backup Operators (bORC) and also
have WW-4 Certifications. Detailed daily operation log books are detailed and are kept on-site going
back at least three years.
5. The plant is certified to analyze ammonia, BOD, TRC, conductivity, DO, Fecal Coliform, pH,
temperature and TSS (Certification #671). Calibration logs were present. pH buffers were within dates.
Fecal and BOD incubators and refrigerators were kept at proper temperatures. Other parameters are
analyzed by Mertiech, with the exception of toxicity, which is split at ETS labs. November 2017 DMR
data was compared to lab bench sheets; no data transcription errors were noted.
3. The facility is currently permitted to discharge up to 12 MGD into Northeast Creek, a WS-IV Nutrient
Sensitive Water (NSW) in the Cape Fear basin. The facility’s monthly average flow for the 2017
calendar year was approximately 4.6 MGD.
1. The current permit expired in April 2016. A renewal application was submitted on September 10.
2015. A copy of the most recently issued (expired) permit was available.
4Page#
Owner - Facility:
Inspection Type:
Triangle WWTP
Compliance Evaluation
clarifiers to the splitter box for remaining phosphorus removal. Bottom sludge recycled to front of BNR
via Recycled Activated Sludge (RAS) pumps
Filtration
Five shallow, high-rate tertiary, traveling bridge sand filters that operate via gravity.
Stand-by Power
4 Generators are tested monthly under load and inspect twice a year by National Power.
Chemical Additions
All chemicals are properly stored and have secondary containment.
Permit: NC0026051
Inspection Date: 03/05/2018
SCADA
SCADA system can monitors and can operate the entire plant. SCADA can be accessed in front
office, sludge building and BNR building.
Sludge Handling Facility
• Two Sludge Holding Tanks - Polymer Added
• T|nree Centrifuges
• Truck-loading area
• Sludge is hauled to McGill Environmental
7. The right of way to the effluent discharge to Northeast Creek were properly maintained. The
effluent appeared clear and free of solids. There were no visible detrimental impacts to the receiving
stream.
Disinfection, Poste Aeration, and Reclaimed Water
• Two UV banks, 56 bulbs in each bank. Alternated, one bank was operating during site visit.
• Post-Aeriation - DO increased before discharge.
• Reclaimed Water - Old effluent Pump Station used as reclaimed water wet-well. Amount of
effluent discharged is dependent upon how much reclaimed water is in the wet well. When the
reclaimed water drops, discharge is diverted to the reclaimed wet-well for use.
• Composite sampler - Sample kept at ~5° C.
• Effluent Flow Meter - Calibration expires on 9/28/19.
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?
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
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?
XIs 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:
Flow Measurement - Influent
# 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?
Comment:
Pump Station - Influent Yes No NA NE
■ Is the pump wet well free of bypass lines or structures?
■ Is the wet well free of excessive grease?
■ Are all pumps present?
5Page#

Owner - Facility:
Inspection Type:
Triangle WWTP
Compliance Evaluation

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Permit: NC0026051
Inspection Date: 03/05/2018
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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?
Yes No NA NE

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Pump Station - Influent Yes No NA NE
■ Are all pumps operable?
■ Are float controls operable?
■ Is SCADA telemetry available and operational?
■ Is audible and visual alarm available and operational?
Comment:
Bar Screens Yes No NA NE
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:
Grit Removal Yes No NA NE
Type of grit removal
a.Manual
b.Mechanical
■ Is the grit free of excessive organic matter?
■ Is the grit free of excessive odor?
■ # Is disposal of grit in compliance?
Comment:
Laboratory Yes No NA NE
■ Are field parameters performed by certified personnel or laboratory?
■ Are all other parameters(excluding field parameters) performed by a certified lab?
■ # Is the facility using a contract lab?

■ Incubator (Fecal Coliform) set to 44.5 degrees Celsius+/- 0.2 degrees?
■ Incubator (BOD) set to 20.0 degrees Celsius +/-1.0 degrees?
6Page#
# Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees
Celsius)?
Permit: NC0026051
Inspection Date: 03/05/2018
Owner - Facility: Triangle WWTP
Inspection Type: Compliance Evaluation
Laboratory Yes No NA NE
Comment:
Operations & Maintenance Yes No NA NE
Is the plant generally clean with acceptable housekeeping?
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Comment:
Permit Yes No NA NE
■
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:
Nutrient Removal Yes No NA NE
# Is total nitrogen removal required?
# Is total phosphorous removal required?
Type
# Is chemical feed required to sustain process?
Is nutrient removal process operating properly?
Comment:
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?
■ 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?
7Page#
Does the facility analyze process control parameters, for ex: MLSS, MCRT. Settleable
Solids, pH, DO, Sludge Judge, and other that are applicable?
Permit: NC0026051
Inspection Date: 03/05/2018
Biological
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(If the present permit expires in 6 months or less). Has the permittee submitted a new
application? yg,j
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Owner - Facility: Triangle WWTP
Inspection Type: Compliance Evaluation
RD
* □ □ □
Permit: NC0026051
Inspection Date: 03/05/2018
Secondary Clarifier Yes No NA NE
■ Is the return rate acceptable (low turbulence)?
■ Is the overflow clear of excessive solids/pin floc?
■ Is the sludge blanket level acceptable? (Approximately 14 of the sidewall depth)
Comment:
Pumps-RAS-WAS Yes No NA NE
■ Are pumps in place?
■ Are pumps operational?
■ Are there adequate spare parts and supplies on site?
Comment:
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?
■ 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:
Chemical Feed Yes No NA NE
Is containment adequate?
■ Is storage adequate?
■ Are backup pumps available?
■ Is the site free of excessive leaking?
Comment:
Disinfection - UV Yes No NA NE
■ Are extra UV bulbs available on site?
■ Are UV bulbs clean?
■ Is UV intensity adequate?
■ Is transmittance at or above designed level?
8Page#
Owner - Facility: Triangle WWTP
Inspection Type: Compliance Evaluation
Disinfection - UV Yes No NA NE
■ Is there a backup system on site?
■ Is effluent clear and free of solids?
Comment:
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/l)
Comment:
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?
Comment:
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?
Comment:
Solids Handling Equipment Yes No NA NE
■ Is the equipment operational?
Is the chemical feed equipment operational?
■ Is storage adequate?
9Page#
Permit: NC0026051
Inspection Date: 03/05/2018
Owner - Facility: Triangle VWVTP
Inspection Type: Compliance Evaluation
Permit: NC0026051
Inspection Date: 03/05/2018
Solids Handling Equipment Yes No NA NE
■ 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:
Standby Power Yes No NA NE
■ 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:
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10Page#
Owner - Facility:
Inspection Type:
Triangle WWTP
Compliance Evaluation
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