NC0028916_Inspection_20090116

Beverly Eaves Perdue, Governor
oF.W&-4
•
January 16, 2009
Grey Walls
Town of Troy
444 North Main Street
Troy, North Carolina 27371
SUBJECT: Compliance Evaluation Inspection Report
Town of Troy WWTP
NPDES Permit No. NC0028916
Montgomery County
Dear Mr. Walls:
Dee Freeman, Secretary
North Carolina Department of Environment and Natural Resources
Coleen H. Sullins, Director
Division of Water Quality
Enclosed you will find a copy of the Compliance Evaluation Inspection report for the inspection
conducted on January 13, 2009. As part of the inspection a tour of the Wastewater Treatment Plant was
conducted. All observations are in Section D. Summary of Findings/Comments of this inspection report.
This facility appeared to be well operated and well maintained. Please keep up the good work. If
you have any questions or comments concerning this report or require clarification on part(s) of this report,
please contact me at [phone].
Sincerely,
Dale Lopez
Environmental Specia
Enclosures: EPA Water Compliance. Inspection Report
Regional Field Inspectors Check List for Field Parameters
cc: FRO Files
One
NorthCarolina
Naturally
North Carolina Division of Water Quality 225 Green Street, Suite 714 Fayetteville, NC 28301-5043 Phone [phone] Customer Service
Internet: www.ncwaterqualitv.ora Fax [phone]
An Equal Opportunity/Affirmative Action Employer— 50% Recycled/10% Post Consumer Paper

31
NPDES
NC0028916
111 121
yr/mo/day
09/01/13
Inspection Type
117 18I C I
(cont.) 1
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
The ORC set up, and calibrated the flow proportional sampling for the 24-hour effluent composite sampler.
The ORC performed the annual calibration check of the influent ultrasonic flow meter. An operator
routinely visited the POTW every day of the week (7 days/week). Donna Mills was the Back -Up ORC for
this POTW. The SCATA system phoned the ORC first, then proceeded to other operators until someone
answered the call and the problem at the POTW, such as: #1 was the high level sludge alarm, #2 was the
high temperature alarm for the influent pumps, #3 was the overtorque alarm for the grit classifier, and #4
was the alarm for the UV unit power. As a reminder and to ensure compliance with this part of the permit,
please review the NPDES Permit, Part II, Section A, Composite Sample, concerning each grab sample in
the composite not being less than 100 mL in volume, and "the preset gallon interval between sample
collection fixed at no greater than 1/24 of the expected total daily flow at the treatment system" for Variable
time/constant volume.
Page # 2

Permit: NC0028916 Owner - Facility: Troy WWTP
Inspection Date: 01/13/2009 Inspection Type: Compliance Evaluation
Operations & Maintenance
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: No reuse water at this POTW.
Permit Yes No NA 'NE
(If the present permit expires in 6 months or less). Has the permittee submitted a new application? {3 n n n
Is the facility as described in the permit? unnn
# Are there any special conditions for the permit? unnn
Is access to the plant site restricted to the general public? unnn
Is the inspector granted access to all areas for inspection? unnn
Comment:
Record Keeping
Are records kept and maintained as required by the permit? ' n n n
Is all required information readily available, complete and current? unnn
Are all records maintained for 3 years (lab. reg. required 5 years)? unnn
Are analytical results consistent with data reported on DMRs? ®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
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?
(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?
Yes No NA NE
u nnn
u nnn
Yes No NA NE
0
®-
u nnn
n nnu
n n®n
n nn®
u nnn
unnn
u nnn
Page # 3

Permit: NC0028916 Owner - Facility: Troy WWTP
Inspection Date: 01/13/2009 Inspection Type: Compliance Evaluation
Record Keeping
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:
Effluent Pipe
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:
Drying Beds
Is there adequate drying bed space? ❑ ❑ n
Is the sludge distribution on drying beds appropriate? n n on.
Are the drying beds free of vegetation? n n ® n
# Is the site free of dry sludge remaining in beds? n n ® n
Is the site free of stockpiled sludge? n n E n
Is the filtrate from sludge drying beds returned to the front of the plant? n n ® n
# Is the sludge disposed of through county landfill? n n ® ❑
# Is the sludge land applied? n n ® n.
(Vacuum filters) Is polymer mixing adequate? n n ® n
Comment: The drying beds are no longer used. However, a septage hauler has been
allowed to apply to two drying beds. The filtrate from the drying beds flowed to the
headworks at a point downstream of the influent sampling point.
Bar Screens Yes No NA NE
Type of bar screen
a.Manual lid
b.Mechanical
Are the bars adequately screening debris? e n n n
Page # 4
Yes No NA NE
n nn ig
Yes No NA NE
®nnn
®nnn
®•nnn
® nnn
Yes No NA NE
® nnn
• nnn
nnn_-.n
Yes No NA NE

Permit: NC0028916 Owner - Facility: Troy WWTP
Inspection Date: 01/13/2009 Inspection Type: Compliance Evaluation
Bar Screens
Is the screen free of excessive debris?
Is disposal of screening in compliance?
Is the unit in good condition?
Comment: The flow through the manual bar screen (with approximately 1 to 2 inch
openings) was in series with the mechanical bar screen (installed approximately two
years ago). The manual bar screen does not allow large material to pass through to
the mechanical bar screen (a stainsless steel "low -flow screen" that was manufactured
by Jones & Atwood). Screening went to the Uharrie Landfill.
Grit Removal
Type of grit removal
a.Manual
b.Mechanical
Yes No NA NE
3nnn
®nnn
nnn
Yes No NA NE
n
Is the grit free of excessive organic matter? ® ❑ n
Is the grit free of excessive odor? • ® n n n
# Is disposal of grit in compliance? n n n
Comment: The grit removal equipment used a chamber that was periodically aerated,
then an air lift pump carried the grit up a pipe to the grit classifier for dewatering, then to
a dumpster and to the Uharrie Landfill.
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 at pumps present?
Are all pumps operable?
Are float controls operable?
Are audible and visual alarms operable?
# Is basin size/volume adequate?
Comment: When the influent exceeded 1.2 MGD, then flow entered the ten -acre EQ
(lagoon) by excessive flow through a valve -less pipe from the influent wet well. Each of
the two influent pumps were capable of handling 1.2 MGD of flow.. They alternated
each time that they came on. The flow to the EQ was later fed back into the WWTP
for treatment.
Oxidation Ditches
Yes No NA NE
nn2n
▪ nnn
®nnn
n nn®
® nnn
n nn®
n n®n
minim
Yes No NA NE
Are the aerators operational? ® n n n
Page # 5

s
Permit: NC0028916 Owner - Facility: Troy WWTP
Inspection Date: 01/13/2009 Inspection Type: Compliance Evaluation
Oxidation Ditches
Are the aerators free of excessive solids build up?-
# 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?.
Are settleometer results acceptable (> 30 minutes)?
Is the DO level acceptable?(1.0 to 3.0 mg/I)
Are settelometer results acceptable?(400 to 800 ml/I in 30 minutes)
Comment: In addition, there were two horizonal mixers in the'oxication ditches. The
target MLTSS was 3,500 mg/L. The two oxidation ditches were operated in series,
rather than in parallel.
Disinfection - UV
Are extra UV bulbsavailable on site?
Are UV bulbs clean?
Is UV intensity adequate?
Is transmittance at or above designed level?
Is there a backup system on site?
Is effluent clear and free of solids?
Comment: HTH tablets and Dechlor tablets for emergency use.
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 agreeinent with a fuel vendor for extended run on back-up power?
Is the generator fuel level monitored?
Comment: No automatic-switchover, only a manually operated generator. The
generator was tested under load approximately twice per year.
Pumps-RAS-WAS
Are pumps in place?
Are pumps operational?
Yes No NA NE
nn n
®nnn
rnnn
Erin El
n'nn
u nnn
® nnn
Yes No NA NE
n nn
nn
■ nnn
nnn
®rinn
® nnn
Yes No NA NE
nn n
nnn
®nnn
nunn
n rinm
nnn®•
®nnn
Yes No NA NE
Erin rl
nnn
Page # 6

Permit: NC0028916 Owner- Facility: Troy WWTP
Inspection Date: 01/13/2009 Inspection Type: Compliance Evaluation
Pumps-RAS-WAS
Are there adequate spare parts and supplies on site?
Comment:
Laboratory
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?
# Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees Celsius)?
Incubator (Fecal Coliform) set to 44.5 degrees Celsius+/- 0.2 degrees?
Incubator (BOD) set to 20.0 degrees Celsius +/- 1.0 degrees?
Comment:
Effluent Sampling
Is composite sampling flow proportional?
Is sample collected below all treatment units?
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 the facility sampling performed as required by the permit (frequency, sampling type representative)?
Comment:
Aerobic Digester
Is the capacity adequate?
Is the mixing adequate?
Is the site free of excessive foaming in the tank?
# Is the odor acceptable?
# Is tankage available for properly waste sludge?.
.Comment: The aerobic Digester had mixing and aeration. Synagrow handled the
land application.
Yes No NA NE
nnng
Yes No NA NE
® n ❑
nnn
• nnn
n nn®
n n®n
W HEW
Yes No NA NE
n.nn
nnn
• nnn
o nnri
o nnn
• nnn
Yes No NA NE
unnn
Linn n
▪ nn
▪ nnn
Kin n n
Page # 7

f f ' 441
Regional Field Inspectors Check List for Field Parameters
Name of site to be inspected: Troy Date: 01/13/09 `N..
Field certification # (if applicable): 5350
NPDES #: NC0028916
Inspector: Dale Lopez ``—
Region: Fayetteville'
I. Circle the parameter or parameters performed at this site.
Residual Chlorine, Settleable Solids, pH, DO, Conductivity,
II. Instrumentation:
A. Doesthe facility have the equipment necessary to analyze field parameters as circled above?
Temperature
1. A pH meter
Fischer Accumet pH meter 501
2. A Residual Chlorine meter
3. DO meter
lYSI 551
4. A Cone for settleable solids
5. A thermometer or meter that measures temperature.
IYSI 551
6. Conductivity meter
III. Calibration/Analysis:
1. Is the pH meter calibrated with 2 buffers and
checked with a third buffer each day of use?
2. For Total Residual Chlorine, is a check standard
analyzed each day of use?
3. Is the air calibration of the DO meter performed
each day of use?
4. For Settleable Solids, is.1 liter of sample
settled for 1 hour?
5. Is the temperature measuring devicecalibrated
annually against a certified thermometer?
'Last calibrated on 04/01/081
6. For Conductivity, is a calibration standard
analyzed each day of use?
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
No

IV. Documentation:
1. Is the date and time that the sample was collected documented?
2. Is the sample site documented?
3. Is the sample collector documented?
4. Is the analysis date and time documented?
5. Did the analyst sign the documentation?
6. Is record of calibration documented?
7. For Settleable Solids, is sample volume and
1 hour time settling time documented?
8. For Temperature, is the annual calibration of
the measuring device documented?
Comments:
pH Buffer 7 expiration date = April 2010
pH Buffer 4 expiration date = March 2010
pH Buffer 10 expiration date = April 2010
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
Yes No
Please submit a copy of this completed form to the Laboratory Certification Program.
DWQ Lab Certification
Chemistry Lab
Courier # 52-01-01
FIELD INSPECTOR CHECKLIST REV. 04/23/2002