NC0028916_Inspection_20010627

North Carolina
Department of Environment and Natural Resources
Division of Water Quality
Fayetteville Regional Office
. Michael F. Easley, Governor
• William G. Ross, Jr.; Secretary
Kerr T. Stevens, Director
The Honorable Roy Maness
Mayor, Town of Troy
444 N. Main Street
Troy, NC 27371
June 27, 2001
SUBJECT: Compliance Evaluation Inspection
Town of Troy
Wastewater Treatment Plant
NPDES Permit No. NC0028916
Montgomery County
Dear Mr. Maness:
Enclosed is a copy of the Compliance Evaluation Inspection conducted June 25, 2001.
As part of the inspection a tour of the Wastewater Treatment Plant was conducted. All
observations and recommendations are in Part D. Summary of Findings/Comments of this inspection
report. The cooperation of Mr. Stephen Jarman, Operator in Responsible Charge was appreciated.
The objective we should all be striving for is NPDES permit compliance which in turn will provide
preservation of our receiving stream for generations to come.
AtzprA
wiltagysi.
NCDENR
Please review the attached report. If you or your staff have any questions do not hesitate
to contact me at 910-486-1541.
Sincerely,
Belinda S. Henson
Environmental Chemist
/bsh
Enclosures
225 GREEN STREET _ SUITE 714 / SYSTEL BUILDING / FAYETTEVILLE, NC 28301-5043
PHONE [phone] FAX [phone] WWW.ENR.STATE.NC.US/ENIL'
AN EQUAL OPPORTUNITY / AFFIRMATIVE ACTION EMPLOYER - 50% RECYCLED/10%. POST CONSUMER PAPER
. DENR TOLL FREE HOTLINE: [phone]

NPDES COMPLIANCE INSPECTION REPORT
North Carolina Division of Water Quality
Fayetteville Regional Office
Section A. National Data System Coding
Transaction Code: N NPDES NO. NC0028916 Date: 010625 Inspection Type: C
Inspector: S Facility -Type: 1 Reserved:
Facility Evaluation Rating: 4 BI: N QA: N Reserved:
Section B: Facility Data
Name and Location of Facility Inspected:
Town of Troy WWTP
Entry Time:.10:00am Permit Effective Date: 010101
Exit Time/Date: 2:00pm/010625 Permit Expiration Date: 040630
Naine(s), Title(s) of On -Site Representative(s):
Stephen Jarman (Certified Grade III Operator) - "ORC" .
Gray Walls - "Public Works Director/Town Engineer"
Phone Number(s): [phone]
Name, Title and Address of Responsible Official
Mr. Roy Maness, Mayor
444 N. Main Street
Troy, NC 27371
Contacted: no
Section C: Areas Evaluated During Inspection
(S = Satisfactory, M = Marginal, U = Unsatisfactory, N = Not Evaluated, N/A =.Not Applicable)
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Maness
Page 3
June 27, 2001
Section D: Summary of Findings/Comments:
1. This facility continues to be operated by the contract company "Water Technology and Controls" for the
Town. The Town continues to maintain the facility and incorporate all ongoing projects of improvement.
A new backup generator is oiisite and will be operational in the near future. It will operate the entire
plant when it is online.
A manual bar screen and a rotameter are used to remove trash and debris at the headworks of the plant.
The rotameter operates by an ultrasonic sensor which senses the flow depth and automatically operates.
All screenings are disposed of through the Uwharrie Environmental Landfill.
The grit removal system appeared to be operational. It is turned on twice a day. All grit is disposed of
in the Uwharrie Environmental Landfill.
Caustic is added to the influent when pH adjustment is needed.
The influent composite sampler refrigerator temperature was 3 degrees Celsius, which is adequate for
proper preservation of samples. Samples should be maintained at 0 - 4 degrees Celsius.
The oxidation ditches appeared to be operating efficiently. The ditches operate in series. An anoxic
zone is used to reduce nitrogen and phosphorus. The facility analyzes Mixed Liquor Suspended Solids
(MLSS) on a monthly basis. The most recent results are approximately 3500 mg/1, which is a good
range for this facility in the summer months and 4000 mg/1 in the winter months as per Mr. Jarman.
8. The clarifiers' sludge depth was approximately two and one half (2 '/2) feet with tank depths of ten (10)
feet. Improvements have been made on the clarifiers since the last inspection. New skirts have been
installed around the diameter of the circular tanks. Areas on the clarifier walkway appeared to have
paint worn from them. These areas should be painted in the near future to eliminate major repairs in the
future.
9. Chlorine is .used in disinfection of the effluent. The chlorine contact tank appeared to have a few
floatables not excessive. The floatables are skimmed away daily and properly disposed of in a container
located beside the tank. The contents of the container are taken to the county landfill for final disposal.
10. The effluent appeared to be free of solids.
11. The effluent outfall could not be visually noted due to vegetative growth. This area should be cleared
to maintain access to the outfall.
12. The digester appeared to bd• operating adequately. The sludge holding tank appeared to be
approximately 2/3 full with supernatant being decanted at the time of the inspection in preparation for
land applying . Biosolids are land applied under permit # WQ0001240 approximately every 18 months
by the contract company " Synagro".

Maness
Page 4
June 27, 2001
13. Two lagoons are located on site. The largest lagoon is used as a equalizing lagoon for high flow periods.
The smaller lagoon is no longer utilized.
14. The grounds were neat and clean.
15. The flow meters are calibrated: quarterly by staff and documented. It is advisable that the flow meter
calibration document contain the % error before and after calibration in the future by the technician.
16. The effluent refrigerated composite sampler temperature was 2 degrees Celsius which is adequate for
proper preservation of samples. The tubing was clean and adequately maintained.
17. The following NPDES permitrequired parameters are analyzed by facility staff: pH, Temperature,
Dissolved Oxygen, and Chlorine Residual. All other required parameters are analyzed by "Water
Technology and Controls".
Laboratory records were reviewed for the months September and October 2000 and compared to
Discharge Monitoring Reports (DMR). All records reviewed appeared to be accurate.
A compliance evaluation analysis report for the period May 2000 through April 2001 did not reveal any
monthly violations. The facility should be commended for their continued compliance of their
NPDES permit.
20. The NPDES permit was available upon request. A new NPDES permit was issued effective January 1,
2001.
21. Maintenance and operational records were reviewed. All records reviewed were adequate.
22. The facility is progressing with a new SCADA system which will assist with daily operations and
provide 24 hour surveillance.
23. The "Backup Operator" for this facility is Pat Merritt,a Grade II Wastewater Treatment Operator.

Name and Signature of Inspector Agency/Office/Telephone Date
Belinda Hen n
-, .4
Name and Signature of Reviewer
DENR/Fayetteville/[phone] C — 9:7— 01
Agency/Office/Telephone Date
Grady Dobson DENR/Fayetteville/[phone]
Action Taken
Regulatory Office Use Only
Compliance Status
Noncompliance
_Compliance
Date

Section D: Summary of Findings/Comments
Brief Facility Description:
A 0.84 MGD WWTP consisting of a flow equalization lagoon, mechanical bar screen. grit
removal. dual oxidation ditches. dual secondary clarification, sludge digester. sludge holding
tank, chlorine disinfection.
FACILITY SITE REVIEW
No N/A 1. " Treatment units properly operated and maintained..
Yes N/A 2. Standby power or other equivalent provision provided. Go in e(c0-(` a r1 s ` 1c
� .{- o pl0 n nq1
es �No N/A 3. Adequate alarm system for power or equipment failure available. et-
4. Sludge disposal procedures appropriate:
No N/A a. Disposal of sludge according to regulations
No N/A b. State approval for sludge disposal received.
Yes No N/A 5. All treatment units other than backup units in service.
No N/A 6. Sufficient sludge disposed of to maintain treatment process equilibrium.
No N/A 7. Adequate number of qualified operators on staff.
No N/A 8. Established procedures available for training new employees.
es�No N/A 9. Adequate spare parts and supplies inventory maintained.
Yes. Nod N/A 10. a. Hydraulic overflows and/or organic overloads experienced
Yes N/A b. Untreated bypass discharge occurs during power failure
Yes e N/A c. Untreated overflows occurred since last inspection.
' res)No N/A 11. Plant has general safety structures such as rails around or covers over
tanks, pits, or wells.
No N/A 12. Plant is generally clean, free from open trash areas.

s i No N/A
es' No N/A
Yes L�To N/A
es No N/A
Yes o N/A
Yes o N/A
es No N/A
13. Screening:
a. Manual
b. Mechanical
c. Buildup of debris
d. Screenings properly disposed of
14. Grit Removal:
a. Excessive organic content in the grit chamber
b. Excessive odors
c. Grit properly disposed of.
Page 2
15. Primary clarifier:
Yes No N% a. Excessive gas bubbles
Yes No N/A b. Black and odorous wastewater
Yes No N/A c. Poor suspended solids removed
Yes No N/A d. Excessive buildup of solids in center well of circular clarifier
Yes No N/A e. Weirs level
Yes No N/A f. Weir blockage
Yes No N/A g. Evidence of short circuiting
Yes No N/A h. Lack of adequate scum removal
Yes No N/A i. Excessive floating sludge
Yes No N/A j. Broken sludge scraper.
16. Trickling Filter:
Yes No N/X a. Trickling filter ponding(indicating clogged media)
Yes No N/A b. Leak at center column of trickling filter's distribution arms
Yes No N/A c. Uneven distribution of flow on trickling filter surface
Yes No N/A d. Uneven or discolored growth
Yes No N/A e. Excessive sloughing of growth
Yes No N/A f. Odor
Yes No N/A g. Clogging of trickling filter's distribution arm orifices
Yes No N/A h. Filter flies, worms, or snails.
17. Rotating Biological Contactors (RBC):
Yes No N/A) a. Development of white biomass on rotating biological contactor
media
Yes No N/A b. Excessive sloughing of growth
Yes No N/A c. Excessive breakage of rotating disks or shafts in RBC units
Yes No N/A d. Excessive breakage of paddles on brush aerators
Yes No N/A e. Shaft, bearing, drive gear, or motor failure on disk or brush aerators.

18. Activated Sludge Basins/Oxidation Ditches:
Yes No) N/A a. Dead spots
Yes N/A b. Failure of surface aerators
Yes C N/A c. Air rising in clumps
Yes N/A d. Dark foam or bad color
Yes N/A e. Thick billows of white, sudsy foam
Yes No U 0 f. Air rising unevenly
Yes No g. Excessive air leaks in compressed air piping.
Yes No Ni'm
Yes No N/A
Yes No N/A
Yes No N/A
Yes
Yes 0
Yes
Yes �a-
Yes Cho
Yes a:)",
Yes
Yes Io
Yeses}
Yes ea
Q'
Page 3
19. Stabilization Ponds/Lagoons:
a. Excessive weeds including duckweed in stabilization ponds
b. Dead fish or aquatic organisms
c. Buildup of solids around influent pipe
d. Excessive scum on surface.
20. Secondary Clarifier:
N/A a. Excessive gas bubbles on surface
N/A b. Unlevel overflow weirs
N/A c. Weir blockage
N/A d. Evidence of short circuiting
N/A e. Excessive buildup of solids in center well of circular clarifier
N/A f Pin floc in overflow
N/A g. Ineffective scum rake
N/A h. Floating sludge on surface
N/A i. Excessive high sludge blanket
N/A j. Clogged sludge withdrawal ports on secondary clarifier.
21. Filtration:
Yes No /A? a. Filter surface clogging
Yes No N/A ' b. Short filter run
Yes No N/A c. Gravel displacement of filter media
Yes No N/A. d. Loss of filter media during backwashing
Yes No N/A e. Recycled filter backwash water in excess of 5 percent
Yes No N/A f Formation of mudballs in filter media.
Yes N/A
Yes e N/A
Yes N/A
Yes No N/A
Yes No N/A
Yes No N/A
Yes No N/A
No N/A
22. Chlorination Unit:
a. Sludge buildup in contact chamber
b. Gas bubbles
c. Floating scum and/or solids
d. Adequate ventilation of chlorine feeding room and storage area
e. NIOSH-approved 30 minute air pack
f. All standing chlorine cylinders chained in place
g. All personnel trained in the use of chlorine
h. Proper chlorine feed, storage, and reserve supply.

Page 4
Yes No ( ' 23. Ultraviolet radiation disinfection present and in use.
24. Dechlorination:
Yes No a. Proper storage of sulfur dioxide cylinders
Yes No N/A b. Adequate. ventilation of sulfur dioxide feeding room
Yes No N/A c. Automatic sulfur dioxide feed or feedback control not operating
properly.
25. Aerobic Digester:
Yes .) N/A -a. Excessive foaming in tank
Yes W N/A b. Noxious odor
Yes . c. Mechanical aeration failure
Yes .. N/A d. Clogging of diffusers.
26. Anaerobic Digester:
Yes No a. Floating cover tilting
Yes No N/A b. Gas burner operative
Yes No N/A c. Supernatant has a sour odor.
27. Sludge Drying and/or disposal:
Yes No a. Poor sludge distribution on drying beds
Yes No N/A b. Vegetation in drying beds
Yes No N/A c. Dry sludge remaining in drying beds
Yes No N/A d. Dry sludge stored on site
Yes No N/A e. Filtrate from sludge drying beds returned to front of plant
Yes No N/A f. Approved disposal site for the sludge
es) No N/A g. Sludge land applied.
28. Filter Press:
Yes No a. High level of solids in filtrate from filter presses or vacuum filters
Yes No N/A b. Thin filter cake caused by poor dewatering
Yes No N/A c. Sludge buildup on belts and/or rollers of filter press
Yes No N/A d. Excessive moisture in belt filter press sludge cake.
Yes No (NjA
Yes No N/A
Yes No N/A
29. Polishing Ponds or Tanks:
a. Objectionable odor, excessive foam, floating solids, or oil sheens on
water surface
b. Solids or scum accumulations in tank or at side of pond
c. Evidence of bypassed polishing ponds or tanks because of low
capacity.

Page 5
30. Plant Effluent:
Yes N/A a. Excessive suspended solids, turbidity, foam, grease, scum, color, and
other macroscopic particulate matter present
Yes a N/A b. Potential toxicity (dead fish, dead plant at discharge)
Yes T) N/A c. Outfall discharge line easily accessible.
No N/A
No N/A
Yes N/A
Yes ITT N/A
Yes No ON
Yes No
`:Yes a0 N/A
Yes 0 N/A
Yes No N/A
No N/A
No N/A
No N/A .
Yes No N/A
N/A
31. Flow Measurement:
a. Proper placement of flow measurement device
b. Flow meter calibrated
c. Buildup of solids in flume or weir
d. Broken or cracked flume or weir
e. Properly functioning magnetic flowmeter
f. Clogged or broken stilling wells
g. Weir plate edge corroded or damaged
h. System capable of measuring maximum flow
i Flow measurement error less than 10%.
32. Sampling:
a. Sampling and analysis completed on parameters specified by permit
b. Samples refrigerated during compositing
c. Composite sample temperatures maintained at O. to 4 degrees Celsius
during sampling
d. Contract laboratory used for sample analysis
e. Composite samples obtained are flow proportional. logs el
euely 0 'ri'1; Jlt42SS
RECORDKEEPING AND REPORTING
No N/A 1. Records and reports maintained as required by permit.
Yes) No N/A 2. All required information available, complete; and current.
esD No N/A 3. Records maintained for 3 years and all sludge records maintained for 5
years.
es No N/A 4. Analytical results consistent with data reported on DMRs.
No N/A
No N/A
No N/A
No. N/A
e 'No N/A
5. Sampling and analyses data adequate and include:
a. Dates, times, and location of sampling
b. Name of individual performing sampling
c. Results of analyses and calibration
d. Dates of analyses
e. Name of person performing analyses.

Yes No N/A
s No N/A
es No N/A
Page 6
6. Monitoring records adequate and include:
a. Monitoring charts kept for 3 years
b. Flowmeter calibration records kept for 3 years.
7. Laboratory equipment calibration and maintenance records adequate.
Yes No T/A} 8. BOD incubator temperature maintained at 20 +/- 1 Degrees Celsius
and the temperature maintained in a log for every day of operation.
Yes No 0. 9. Fecal coliform incubator maintained at 44.5 +/- 0.2Degrees
Celsius and the temperature maintained in a log for every day of
operation.
No N/A
Y' i) No N/A
No N/A
Yes No
Yes No
Ye , No N/A
es No N/A
(No N/A
Y s:)No N/A
10. Plant records adequate and include:
a. O & M Manual
b. "As -built" engineering drawings
c. Schedules and dates of equipment maintenance repairs
d. Equipment data cards.
11. Permittee is meeting compliance schedule.
12. DMRs complete and include all NPDES permit required parameters.
13. ORC visitation logs available and current.
14. ORC certified at a level equal to or greater than the classification of
the wastewater facility.
15. Backup Operator certified at one level less than the classification of
the wastewater facility or greater.
No N/A 16. Current copy of the complete NPDES permit on site.
Yes No N/A 17. Facility description verified as contained in NPDES permit.
Revised 7/11/00
by Belinda Henson

INSPECTION REPORT
NEXT PLANNED •
INSPECTED BY:
HSB
r
INSPECTION 'DMR
STATUS STATUS
/
•C C
UPDATE OPTION:
TRX: 5IF KEY: NC0028916INSCEI
SYSMSG: ***.DATA ADDED SUCCESSFULLY ***
PERMIT--- NC0028916
FACILITY-- TROY, TOWN -,WWTP
,
INS TYPE
CEI
INSPECTION_
DATE 010625
REPORT
DATE
010627
COMMENTS:
01062 5
REG/COUNTY-- 06 MONTGOMERY
LOC--•TROY,
RESPONSE RECEIVED
DUE DATE DATE
010627