NC0047384_CEI_Inspection_20210715

DocuSign Envelope ID: 5353077F-BC66-4D69-8FF6-7AC8EDD41817
United States Environmental Protection Agency
EPA Washington, D.C. 20460
Water Compliance Inspection Report
Form Approved.
OMB No. 2040-0057
Approval expires 8-31-98
Section A: National Data System Coding (i.e., PCS)
Transaction
1
21IIIIII
Inspection
671
Code
IN I 2
NPDES yr/mo/day Inspection
L 3 I NC0047384 111 121 21/07/15 117
Type
1810I
IIIIIIIIIII
Inspector Fac Type
191S I 2011
IIIIIIIIIII IIIIIII I IIIIII
P6
Work Days Facility Self -Monitoring Evaluation Rating B1 QA Reserved
I 7° I I 711 172 I N I 731 1 74 71
I I
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
POTW name and NPDES permit Number)
T.Z. Osborne WWTP
2350 Huffin Mill Rd
Mc Leansville NC 273019304
Entry Time/Date
10:OOAM 21/07/15
Permit Effective Date
14/07/01
Exit Time/Date
01:OOPM 21/07/15
Permit Expiration Date
19/06/30
Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s)
///
Bradley Todd Flynt/ORC/336-433-7262/
Other Facility Data
Name, Address of Responsible Official/Title/Phone and Fax Number
Contacted
Steven 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 & Maintenar Records/Reports
Self -Monitoring Progran Sludge Handling DispoFacility Site Review Effluent/Receiving Wate
Laboratory
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
(See attachment summary)
Name(s) and Sig
Ron Boone"
Patricia Lowery
€ )si9hfrIApector(s) Agency/Office/Phone and Fax Numbers Date
�oo"� 7/22/2021
DWR/WSRO WQ/336-776-9690/
e-26P+3 F2A3460 DWR/WSRO WQ/336-776-9691/
.nA,i�i� d_e'l' 7/22/2021
42D62165508C476...
Signature
of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date
rDocuSigned by:
/�ti ?. SA,acr 7/23/2021
EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete.
Page# 1

DocuSign Envelope ID: 5353077F-BC66-4D69-8FF6-7AC8EDD41817
sI
NPDES yr/mo/day
NC0047384 111 121 21/07/15
I17
Inspection Type
18LI
(Cont.)
1
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
On 7/15/2021, Ron Boone and Tricia Lowery met with Brad Flynt (ORC), Elijah Williams, and Alicia
Goots (Laboratory) to perform a Compliance Evaluation Inspection at TZ Osborne WWTP. This
inspection consisted of 2 parts: 1) in -office file review and, 2) on -site inspection of the treatment
facility. Ms. Goots assisted us with the in -office file review and Mr. Flynt escorted us through the
facility during the on -site inspection. The attached EPA inspection form details the areas that were
evaluated with their respective comments (if needed).
The facility runs and operates in accordance with their permit. No significant issues or violations were
found during the inspection.
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DocuSign Envelope ID: 5353077F-BC66-4D69-8FF6-7AC8EDD41817
Permit: NC0047384
Inspection Date: 07/15/2021
Owner - Facility: T.Z. Osborne WWTP
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 MODE
application?
Is the facility as described in the permit? El • El El
# Are there any special conditions for the permit? • El El El
Is access to the plant site restricted to the general public? • ❑ ❑ ❑
Is the inspector granted access to all areas for inspection? • El El El
Comment: Permit expired June 30, 2019. Application for renewal was received 11/26/18.
Equalizations basins are not listed in the permit under treatment components. Special
conditions exist until upgrade to 56 MGD for nutrient limitation, loading and allocations,
as well as, MMP, NOP, chronic aqtx, and efflluent pollutant scan. SOC became
effective 5/1/2021 for weekly sampling for 1, 4-dioxane using EPA approved method
624.1. Plant upgrade from 40MGD to 56MGD is expected to occur 8/1/2021, but
possibly 9/1/21 at the latest.
Influent Sampling
# Is composite sampling flow proportional?
Is sample collected above side streams?
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?
Yes No NA NE
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Comment: Influent sampling is constant time/constant volume (15mins/150mis). Influent sampler
temp = 5 C
Effluent Sampling Yes No NA NE
Is composite sampling flow proportional? • El El El
Is sample collected below all treatment units? • El El El
Is proper volume collected? • ❑ ❑ ❑
Is the tubing clean? • El El El
# Is proper temperature set for sample storage (kept at less than or equal to 6.0 • El El El
degrees Celsius)?
Is the facility sampling performed as required by the permit (frequency, sampling type • ❑ ❑ ❑
representative)?
Comment: Effluent sampler temp = 4 C
Upstream / Downstream Sampling Yes No NA NE
Page# 3

DocuSign Envelope ID: 5353077F-BC66-4D69-8FF6-7AC8EDD41817
Permit: NC0047384
Inspection Date: 07/15/2021
Owner - Facility: T.Z. Osborne WWTP
Inspection Type: Compliance Evaluation
Upstream / Downstream Sampling Yes No NA NE
Is the facility sampling performed as required by the permit (frequency, sampling type, MODE
and sampling location)?
Comment: Upstream/Downstream sampling is conducted by Upper Cape Fear authorities (facility
maintains membership).
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?
Yes No NA NE
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Comment: 2 points of influent flow are continuously monitored. N. Buffalo Creek enters facility
directly into grit chambers. Primary influent flow entering plant consist of 75 ft main line
(3 branches converge into 75 ft line).
Flow Measurement - Effluent
# 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: Calibrated 2/26/2021
Equalization Basins
Is the basin aerated?
Is the basin free of bypass lines or structures to the natural environment?
Is the basin free of excessive grease?
Are all pumps present?
Are all pumps operable?
Are float controls operable?
Are audible and visual alarms operable?
# Is basin size/volume adequate?
Yes No NA NE
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Yes No NA NE
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Comment: Old EQ basin 3.5 MG capacity, new EQ basin 4.5 MG capacity. EQ's are fed from grit
chamber. If critical threshold flow events (96mgd) were to occur, the 2 EQ basin will
bypass EQ pump station and directy enter BNR to prevent flooding/overflow of pump
station.
Bar Screens Yes No NA NE
Page# 4

DocuSign Envelope ID: 5353077F-BC66-4D69-8FF6-7AC8EDD41817
Permit: NC0047384
Inspection Date: 07/15/2021
Owner - Facility: T.Z. Osborne WWTP
Inspection Type: Compliance Evaluation
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?
Comment: none
Grit Removal
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: Stirred grit chambers with vortex classifiers.
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'/4 of the sidewall depth)
Comment: 6 primary classifiers
Aeration Basins
Mode of operation
Yes No NA NE
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Yes No NA NE
Yes No NA NE
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Yes No NA NE
Ext. Air
Page# 5

DocuSign Envelope ID: 5353077F-BC66-4D69-8FF6-7AC8EDD41817
Permit: NC0047384
Inspection Date: 07/15/2021
Owner - Facility: T.Z. Osborne WWTP
Inspection Type: Compliance Evaluation
Aeration Basins Yes No NA NE
Type of aeration system Diffused
Is the basin free of dead spots? • ❑ El El
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? ❑ ❑ El •
Is the DO level acceptable?(1.0 to 3.0 mg/I) ❑ ❑ ❑ •
Comment: 18 basins total. ORC stated contractor conducts BNR phosphorus profiles.
Microscopic evaluations are conducted to monitor sludge age. MCRT/F:M ratio
calculations are conducted as well.
Pumps-RAS-WAS
Are pumps in place?
Are pumps operational?
Are there adequate spare parts and supplies on site?
Comment: none
Secondary 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 return rate acceptable (low turbulence)?
Is the overflow clear of excessive solids/pin floc?
Is the sludge blanket level acceptable? (Approximately'/4 of the sidewall depth)
Yes No NA NE
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IN El El El
Yes No NA NE
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Comment: 10 secondary clarifiers. Some vegetative growth seen, but not excessive to lead to
impairment/performance of classifiers.
Filtration (High Rate Tertiary) Yes No NA NE
Page# 6

DocuSign Envelope ID: 5353077F-BC66-4D69-8FF6-7AC8EDD41817
Permit: NC0047384
Inspection Date: 07/15/2021
Owner - Facility: T.Z. Osborne WWTP
Inspection Type: Compliance Evaluation
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?
Yes No NA NE
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Comment: Aqua Diamond system in use. Backwashes are activated in direct correlation to head
loss.
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: none
Yes No NA NE
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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? • ❑ ❑ ❑
Are the tablets the proper size and type? ❑ ❑ • ❑
Comment: none
Are tablet de -chlorinators operational? ❑ ❑ • ❑
Number of tubes in use?
Comment: Bisulfite used for de -chlorination
Chemical Feed
Is containment adequate?
Is storage adequate?
Yes No NA NE
Page# 7

DocuSign Envelope ID: 5353077F-BC66-4D69-8FF6-7AC8EDD41817
Permit: NC0047384
Inspection Date: 07/15/2021
Owner - Facility: T.Z. Osborne WWTP
Inspection Type: Compliance Evaluation
Chemical Feed
Are backup pumps available?
Is the site free of excessive leaking?
Comment: none
Yes No NA NE
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Solids Handling Equipment Yes No NA NE
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: Sludge (and thickened sludge) holding tanks, sludge thickeners, centrifuges and
fluidized bed incinerator. CEMS testing and maintenance is conducted on regular
basis by contracted firm.
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? • ❑ ❑ ❑
Are all pumps operable? • ❑ El El
Are float controls operable? • El El El
Is SCADA telemetry available and operational? • El ❑ ❑
Is audible and visual alarm available and operational? • El El El
Comment: none
Pump Station - Effluent
Is the pump wet well free of bypass lines or structures?
Are all pumps present?
Are all pumps operable?
Are float controls operable?
Is SCADA telemetry available and operational?
Is audible and visual alarm available and operational?
Comment: none
Yes No NA NE
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Page# 8

DocuSign Envelope ID: 5353077F-BC66-4D69-8FF6-7AC8EDD41817
Permit: NC0047384
Inspection Date: 07/15/2021
Owner - Facility: T.Z. Osborne WWTP
Inspection Type: Compliance Evaluation
Pump Station - Effluent Yes No NA NE
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 MODE
Solids, pH, DO, Sludge Judge, and other that are applicable?
Comment: none
Nutrient Removal Yes No NA NE
# Is total nitrogen removal required? • ❑ El ❑
# Is total phosphorous removal required? • El El El
Type Biological
# Is chemical feed required to sustain process? ■ El El El
Is nutrient removal process operating properly? ■ El ❑ ❑
Comment: PAC is used and injected into centrate, BNR and secondary clarifiers to control
phosphorus elevations when needed.
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?
Yes No NA NE
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Comment: Two independent power grids supply facility. Run generators once a month - to test
operations and conduct air emmisions testing as well. 2 - 12,000 tanks for fuel. 3
generators on site. Fuel pumps are on site to supply generators.
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