HomeMy WebLinkAboutNC0020656_Recon Inspection_20030305At7A
NCDENR
North Carolina Department of Environment and Natural Resources
Michael F. Easley, Governor
March 5, 2003
CERTIFIED MAIL
RETURN RECEIPT REQUESTED
The Honorable Ann B. Slaughter
Mayor, City of Laurinburg
PO Box 249
Laurinburg, NC 28352
SUBJECT: NOTICE OF VIOLATION
Reconnaissance Inspection _
City of Laurinburg Wastewater Treatment Facility
NPDES Permit No. NC20656
Scotland County
William G. Ross, Jr., Secretary
Alan Klimek, P.E., Director
Division of Water Quality
Dear Mayor Slaughter:
On February 18, 2003, Don Register and Belinda Henson, of the Fayetteville Regional Office,
Division of Water Quality, visited the Leith Creek Wastewater Treatment Facility. After speaking with
Mr. Ricky Odum, Back-up ORC, staff proceeded to inspect the recently rebuilt secondary clarifiers. The
chlorine contact chamber was also inspected and staff witnessed activated sludge solids flowing through
the unit into the effluent channel (see below).
Staff, at that time, proceeded to find Mr. Odum to alert him of the solids washout and to stop it
immediately.
Fayetteville Regional Office
. . •u_ a_.L n__ r nooni cnno
Mayor Slaughter
Page 2
March 5, 2003
It is the opinion of this office that the discharge of solids in this manner is a violation of your
NPDES Permit Part II Section C. 2 that states:
Proper Operation and Maintenance- "The permittee shall at all times properly
operate and maintain all facilities and systems of treatment and control (and
related appurtenances) which are installed or used by the permittee to achieve
compliance with the conditions of this permit".
• While waiting for the violation to stop, Mr. Robert Ellis, the operator in responsible charge (ORC)
of the facility arrived on site. When he was asked the reason for the violation, he commented that it must
be the recent rain in the area that was washing' the solids out. The clarifier overflow rates did not appear
to be excessive, which would indicate high flows. Upon request, Ricky Odum, checked the sludge
blanket depth of the #1 clairifier (which was not overflowing the weirs) and it appeared to be a nine foot
blanket in a 12 ft. deep sidewall depth.
The #2 clarifier, the one overflowing solids at that particular time, appeared to be overloaded with
solids or the solids had a settling problem. Judging by the requested flow data received for the week of
the violation, the flow did not appear to be too high.
The day of the violation, the total daily flow was measured at 3.557 MGD (permitted flow.4 MGD)
and the 24 hour effluent composite sample measured at 650 mg/1 for the total suspended solids (620 mg/1
over the Town's limit of 30 mg/1).
This office is requesting the following data to help determine the source(s) of the problem noted.
Typically, problems can be generally categorized as design or operational. We ask that you provide the
following information for the, months of September 2002 through February 2003 on or before April 15,
2003:
1. The dates of the usage of the equalization basin and the flows (MGD) that was diverted to the EQ
basin.
2. Copies of weekly circular flow charts.
3. Each of the aeration basin (MLTSS) mixed liquor total suspended solids analysis in mg/1.
4. The clarifier blanket readings recorded for each clarifier.
5. The date and the number cif gallons wasted to the digester.
6. The level of the digester each day.
7. The biosolids land application events for 2002 and the volume applied during each event.
8. The calculation(s) used to determine sludge wasting.
9. A plan of action to prevent discharges of similar nature from reoccurring.
In addition to the above, we would like to draw your attention to the attached Compliance
Biomonitoring Inspection for the inspection conducted the week of March 26, 2001. Please note during
that inspection, regional staff observed a similar discharge of high solids and a Notice of Violation was
also forwarded at that time.
By documenting two (2) occurrences where waste solids were leaving the municipal wastewater
treatment facility in a manner inconsistent withthe permit, this office has no choice but to consider this a
reoccurring problem. As previously requested, we ask that you provide a plan of action that will prevent
further violations of this nature.
Mayor Slaughter
Page 3
March 5, 2003
Please be advised that this notice does not prevent the Division of Water Quality from taking
enforcement actions for the violation(s) noted or any violation past or future. Your response to this letter
will be considered in determining if further action, to include civil penalties, will be warranted.
Should you have any questions regarding this matter, please do not hesitate to contact me at 910-486-
1541.
Paul E. Rawls
Water Quality Regional Supervisor
PER:DR/BH:bs
Enclosures
cc: Robert Ellis, ORC, City of Laurinburg
Ricky Odum, Back-up ORC, City of Laurinburg
Shannon Langley, DWQ NPDES Compliance Unit
Hope Walters, DWQ Operator Training and Certification Unit
FRO DWQ File
Division of Water Quality
Fayetteville Regional Office
MichaelF. Easley, Governor
William G. Ross, Jr., Secretary
Kerr T. Stevens, Director
The Honorable Ann Slaughter
Mayor, City of Laurinburg
P.O. Box 520
Laurinburg,.NC 28379
Subject:
April.17, 2001
NOTICE OF VIOLATION, .
COMPLIANCE BIOMONITORING INSPECTION
City of Laurinburg Wastewater Treatment Plant
NPDES Permit No. NC0020656
Scotland County
Dear Ms. Slaughter:
Enclosed you will . find a. copy of the Compliance Biomonitoring Inspection report for the
inspection conducted the week of March 26, 2001. The inspection included the same objectives as that of
a routine Compliance Evaluation Inspection (conducted•on March 26, 2001) plus an Aquatic Toxicity
•(AT) test to evaluate the. biological effect of the facility's discharge on test organisms. • 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. A 24-hour
001 effluent composite.sample was collected at your facility on March 27 and on March. 30. s The aquatic
toxicity samples were sent to the Division of•Water Quality Aquatic Toxicology Laboratory (located on
Reedy Creek Road in Raleigh). • The chronic Ceriodaphnia. dubia 31% pass/fail toxicity test using these
samples resulted in a Pass, indicating that the effluent would not be predicted to have water quality
impacts on the receiving waters. Additionally, on March 27, .the 24-hour Outfall 001 effluent was
sampledfor. the following parameters:. Biochemical Oxygen Demand (BOD), Ammonia as nitrogen, Total
Kjeldahl Nitrogen, Nitrite plus Nitrate as ,nitrogen, Total. Phosphorus, Copper, and Zinc: On Friday,
March 30, a TSS sample was collected from DWQ"s composite sample (collected from noon on March
29`" to noon on March 30th and quickly processed by the DWQ Laboratory in Raleigh); the TSS result was
370 mg/L (which does not agree with the result of the TSS for the composite collected by your facility for
the approximate time period of 8:30 AM on March 29th to 8:30 AM on March 30`h). That TSS result was
58 mg/L.. On April 4ththe 24-hour composite sample collected by your facility during the time period of
8:30 AM on Tuesday, April 3d to 8:30 AM on Wednesday April 4th, was split. A TSS sample and a
•
BOD sample were sent to our DWQ laboratory. The laboratory results of the pending chemistry analyses
will be forwarded to you when they. are completed by the Division of Water Quality Chemistry
Laboratory, located on Reedy Creek Roadin Raleigh.
225 GREEN STREET - SUITE 714 / SYSTEL BUILDING / FAYETTEVILLE, NC 28301-5043
PHONE (910) 486-1541 FAX (910) 486-0707 WWW.ENR.STATE.NC.USiFNR!
AN EQUAL OPPORTUNITY / AFFIRMATIVE ACTION EMPLOYER - 50% RECYCLED/10% POST CONSUMER PAPER
DENR TOLL FREE HOTLINE: 1-877-623-6748
copy of the following information was left with Ricky Odum:
1.
NPDES Compliance Reminders,
2. Vector Attraction and Pathogens - Class B,
3. An invitation for no cost Operator Wastewater Training on April 6, 2001 at
the DWQ-Fayetteville Regional Office (a FAX of this invitation was also sent to
Robert Ellis).
Based on observations and sample taken, this office considers the Town. of Laurinburg in
violation of NPDES permit Part IL Section C. 2. Proper Operation and Maintenance —
permittee shall at all times properly operate. and maintain all facilities and systemsof treatment
and control (and related appurtenances) which are installed or used by the permittee to achieve
compliance with the conditions ofthis permit." The following itemsare addressed in this report as
violations of the NPDES permit:
1) On the day of the inspection; Monday, March 26,. solids at clarifier #1 were overflowing
into the chlorine contact chamber. Solids.had not been wasted since January 2001.
2) Digester capacity was full of solids through the entire week of March 26.
3) The TSS sample, collected from noon on Thursday (March 29) to noon on Friday (March
'30) by DWQ, was 370 mg/L.
4) On Friday, March 30, condoms were floating in the chlorine contact chamber:
5) The chlorine contact chamber. was not properly maintained. The walls need immediate
repair.
This office is very concerned about the solids inventory of the WWTP: We feel that such
inventory had reached a critical level due to the reported MLSS of between 5580 to 5880 mg/L. It is our
understanding that your target MLSS is 2500. mg/L and that by not disposing of waste residuals (land
applying) in a timely manner had resulted in the excessive solids observed and measured leaving your
facility: We are requesting that your facility empty your digesters on a more frequent basis. You are
asked to perform and document weekly monitoring of the sludge depth in the chlorine contact chambers
until further notice. This data will be reviewed during future inspections. You are asked to send a
response letter to this office within ten (10) days of receiving this report with a timeline for fixing the
holes in the walls of the chlorine contact chamber. The response letter should also address the corrective
action(s) that will be taken to eliminate the excessive sludge in the clarifiers; chlorine contact chambers,
and digesters:.
•Mayor Slaughter
Page 3:.
April 17, 2001
If you have any questions or comments concerning this report or require clarification. on part(s) of
this. report,- please feel free to contact me at 910/486-1541.
.Sineereiy,-).
;l1
Paul Rawls .
Water. Quality Regional Supervisor.
DL:PR/dl
Enclosures: Schematic of WWTP., FACILITY SITE REVIEW
cc: Kevin Bowden, DWQ, ESB, ATU,
Dan Register DWQ-FRO
Robert Ellis, City of Laurinburg, (ORC)
Ricky Odum, City of Laurinburg, (Backup-ORC)
NPDES COMPLIANCE INSPECTION REPORT
North Carolina Division of Water Quality
Fayetteville Regional Office
Section A. National Data System Coding
Transaction Code: N
Inspector: S
NPDES NO. NC0020656
Facility -Type: 1
Facility Evaluation Rating: 3 BI: N QA: N
Section B: Facility Data •
Name. and Location of Facility Inspected:
City of Laurinburg WWTP (Leith Creek)
Entry Time: 10:00 AM
Exit Time/Date: 02:35 PMi010326
Name(s), Title(s) of On -Site Representative(s):
Robert Ellis — (Certified Grade IV) — "ORC"
Ricky Odum ---(Certified Grade III) --- "Backup ORC"
Name, Title and Address of Responsible Official:
Ms: Ann Slaughter, Mayor
P.O. Box 249
Laurinburg, NC 28352
Date: 010327
Inspection Type: B
Reserved:
Reserved:
Permit Effective Date: 010301
Permit Expiration Date: 040831
Contacted: No
Section C: Areas Evaluated during Inspection
(S = Satisfactory, M = Marginal, U = Unsatisfactory, N = Not Evaluated, N/A = Not Applicable)
Pei niit: = S
Facility Site Review: M.
Laboratory: S
Pretreatment:. N/A
Self -Monitoring Prograin: S
Sludge Disposal: NI
Records/Reports: S
Flow Measurement: S
Effluent/Receiving Waters: S
Compliance Schedule: N/A
Operation & Maintenance: 1N1
Mayor Slaughter
Page 5
April 17, 2001
Laurinburg (Leith Creek) Wastewater Treatment Plant (WWTP)
BIOMONITORING EVALUTATION INSPECTION.
performed during the week of March 26, 2001
DESCRIPTION OF LAURINGBURG WWTP:
The Laurinburg WWTP is a 4 MGD wastewater'treatment facility consisting of mechanical bar screen,
• mechanical grit removal, influent Parshall Flume and ultrasonic - flow monitoring .device,• aerated
equalization basin (E.Q. basin), influent pump station (overflow from the influent pump station goes to
the E.Q. pump station, and then to a 6MG.E.Q. basin with six floating aerators), flow splitter box divides
flow:'equally between dual extended .aeration.basins (both: aeration basins with. secondary
clarification), 2 MGD oxidation ditch with secondary clarification, dualchlorine contact basin, effluent
force main pumps treated wastewater approximately one mile to the effluent Parshall Flume (equipped
with ultrasonic flow monitoring device), cascade aeration, and discharge of treated wastewater into Big
Shoe Heel Creek (Lumber River Basin) Sludge is treated in two aerobic • digesters and sludge drying
beds, then land applied at the Laurinburg Maxton AirportCommission land application site.
SECTION D: SUMMARY OF FINDINGS/COMMENTS: _
PLANT TOUR---
1. The facility has influent and effluent flow meters. The effluent flow is used for reporting.
2... The effluent composite sampler is flow proportional (constant volume/variable time), sampling
every 50,000 gallons. It has been flowproportional for approximately five years.
3. The automatic climber bar screen has not been operational for three to four weeks (waiting for worm
gear replacement items). Screenings go to the Scotland County Landfill.
4. The effluent composite sampler temperature was 5 degrees Celsius.
5. The grit removal system was operational. All grit goes to the Scotland County Landfill.
6. There is a workorder to replace the rails in the influent pump station.
7. The generator at the influent pump station is tested once per month.
8. Influent pumps are tested daily (each morning).
9. The ultrasonic flow -measuring device was installed in November 2000.
10. Land application will occur next week, Monday April 2, at the LMAC land application site. They
will remove 700,000 gallons. Both of the aerobic digesters are full.
11. Launders of the clarifiers are cleaned daily.
12. In the winter, it takes approximately 2 to 3 months to dry sludge in the drying beds.. In the summer,
it takes approximately 1 month.
13. Solids from the large and small digesters are land applied; solids from the small digester are applied
to the drying beds.
14. Routine plant maintenance includes changing the oil in the aerators annually, and inspecting the
pump impellers once every 3 months.
Mayor Slaughter
Page 6
April 17, 2001
15. Sludge blankets in the clarifiers on Monday,. March 26:
CLARIFIER #
CLARIFIER DEPTH
SLUDGE BLANKET DEPTH
#1
12 feet
;Solids overflowing •
#2
12 feet
5 feet
#3
12 feet
5 feet .:... .
Sludge blankets in the clarifiers: on Friday, March 30:
CLARIFIER #
CLARIFIER DEPTH
SLUDGE BLANKET DEPTH
,.-
Unit #1
12 feet
10 feet
Unit #2
12 feet
" 12 feet
Unit #3 .. .
12 feet .
11 feet
Sludge blankets iri the chlorine contact chambers on Tuesday, March 27:
CHLORINE CONTACT #
Unit# 1
CHAMBER DEPTH
10 feet
SLUDGE BLANKET. DEPTH
` 3 feet
Unit # 2
10 feet
4feet
Unit. # 3
none
none
Starting on the afternoon of Tuesday, March 27, both chlorine contact chambers were cleaned.
Sludge blankets in the chlorine contact chambers on Friday, March 30:.
CHLORINE CONTACT #
Unit #1
CHAMBER DEPTH
10 feet
SLUDGE BLANKET DEPTH
* . 5 feet
Unit #2
Unit #3
10 feet
* 5 feet
none
none
.* Please note the significant increase in the solids from 3/27 to 3/30.
16. Climbing Mechanical Bar Screen is not in operation due to gearbox. repair (waiting for the main
drive worm gear replacement items). This has not caused compliance problems.
•
17. During the inspection the back-up ORC initiated cleaning of Contact Basin #1, followed by #2.
Normally, the chlorine contact basins are cleaned out once per month.
18. Two of the walls of Chlorine Contact Basin #1 areeroded completely through at the surface. and
one wall of Chlorine Contact Basin #2 is also eroded badly.
Mayor Slaughter
Page 7
April 17, 2001
LABORATORY TOUR --
Laboratory parameters that are analyzed on site: pH, Total Residual Chlorine, Biochemical Oxygen
Demand (BOD), Total Suspended Solids (TSS), Fecal Coliform,.Dissolved Oxygen, Conductivity,
Ammonia Nitrogen, and temperature
Metals (Hg, Cu, and Zn), Total Nitrogen (NH3, NO2; NO3, and TKN) and Total Phosphorus are sent
to Oxford Laboratories, Inc:
Chronic Toxicity is analyzed at Burlington Research.
The pH buffer.: expiration dates are:
HACH LOT #
EXPIRATION DATE
PH BUFFER
A0230 :
` August 17,
2004 :
4
A0230
_
August 17,
2002
7
A0066
:.
* March 6,
2001
10
*. Expired
The millivolts of the,7 pH buffer is 21.2 mV
TSS weights are Class S. A 1 mg, 10 mg, and 50 mg weight crosscheck is performed quarterly, and a
50 mg weight iscrosscheck daily..
. Laboratory temperatures:
Instrument
Temperature (degrees C)
BOD Incubator_ .
.20.7
Fecal-Coliform
44.4
TSS Drying Oven
106
Sample Refrigerator..
3
8. An NIST crosscheck of all of the thermometers is performed and documentedannuaiiy.
9. The YSI Model 5100 is used for measuring the IDO and FDO of the BOD. The membrane is
changed every three weeks.
10. The BOD GGA standard is purchased from North Central Laboratory.
RECORDKEEPING:AND REPORTING:
Eighty-four DMR data points from December 2000 were crosschecked with the laboratory bench.
All data points were in agreement.
Slaughter
Page 8
April 17, 2001
RECOMMENDATIONS---
1. Recommend that, in order to calculate the % error, the calibration. report sheet of the ultrasonic
flowmeter at the Parshall Flume have the ultrasonic's reading beforeand after calibration, and the
Parshall Flume's head measurement (in inches at the ultrasonic flowmeter location). According
to 15A NCAC 2B .0505 (b) (1): "Devices selected shall be capable of measuring flows with a
maximum deviation of less than 10 percent from true discharge.v.olumes. Flow, measurement
devices shall be accurately calibrated at a minimum of once per year and :Maintained to ensure
that the accuracy of the measurements are consistent with the accepted capability of that type of
device.".:;-- ..
2. Remind. the facility that the following parameters are to be run on a grab sample: Chlorine, pH,
Dissolved Oxygen, and Fecal. Coliform.. . . ' • -
3. Require that the pH, dissolved oxygen; and chlorine analyses be performed within fifteen minutes
of collection as according to 40 CFR 136, page 29, Table II ---Required Containers, Preservation
Techniques, and Holding Times: `Analyze immediately' usually means within 15 minutes or
less of sample collection."
.4. Recommend that the chlorine contact chamber be cleaned out when the sludge depth is no greater
than one foot deep in the chamber.
5. Suggest that your facility empty the digesters on a quarterly basis to minimize the solids in the
plant.
6. Require that your facility perform and. document weekly monitoring of the sludge depth in the
chlorine contact chambers. ' • . -`
7. Require that your facility send this office a response letter within ten days of receiving this report
addressing a timeline for fixing the holes .in the walls of the chlorine contact chamber and also
addressing the corrective actions thatwill be taken to eliminate the excessive sludge in the
clarifiers, chlorine contact chambers, and the digesters. `
8. Require that your laboratory10 pH buffer be replaced because it has exceeded the expiration
date.. .. .•
9. Since the effluent composite sample refrigerator temperature was:5 degrees Celsius, recommend
that samples be collected, transported, and stored as according to the official storage temperature
requirement published in 40 CFR Part 136.3(e), Table II. The acceptable temperature range is 0
to 4 degrees Centigrade. . However, the sample must not be frozen, especially for a biological
sample. -The intent of cooling samples to 4 degrees Centigrade is to minimize any biological and
chemical reactions such that the integrity of the sample is not compromised.
Name aupignature of Insp ,ctor Agency/Office/Telephone
Dale Lopez `�,��',� {.�, NCDENR/Fayetteville/(9 1 0) 486-1541
Don Register ``= = ; . 7 j> NCDENR/Fayetteville/(910) 486-1541
' 1,;
Name and Signature of Reviewer
Agency/Office/Telephone
Belinda Henson NCDENR/Fayetteville/(910) 486-1541
art 1-114..00
Date
Date
Mayor Slaughter•
Page9.
April 17, 2001
Action Taken
Regulatory Office Use Only
Compliance Status
Noncompliance
_Compliance
Date
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Section D:_SIunmary of Findings/Comments
Brief Facility Description:
'(' tin 2�)b56
/P,9rj?
FACILITY SITE REVIEW
. Yes 6N/A 1 . Treatment units properly operated and maintained.
.FL 1-)/(;-1)
Yes &c, N/A 2. Standby power or other equivalent provision provided. � y
• Yes C9 N/A.. 3. Adequate•alarm system for power or equipment failure available,
4. .Sludge disposal procedures appropriate:
Ye No N/A a. Disposal of sludge according to regulations
No N/A b. State approval for sludge disposal received.
Yes io1 N/A 5 All treatment units other than backup units in service.(f./'b' SC'i'CC h /5
Yes 6Tc�' N/A 6. Sufficient sludge disposed of to maintain treatment process equilibrium.
CZ -es) No N/A 7.: .Adequate number of qualif ed operators on staff.
Y9>%No N/A 8. Established procedures available for.training new employees.
Yes i Tp) N/A 9. Adequate spare parts and supplies inventory maintained. .
Yes
Yes
Yes
NIA 10. a. Hydraulic overflows and/or organic overloads experienced
N/A b. Untreated bypass discharge occurs during power failure
N/A c. Untreated overflows occurred since last inspection.
est No N/A 11. Plant has general safety structures such as rails around or covers over
tanks, pits, or wells.. .
es; No N/A 12. Plant is generally clean, free from. open trash areas.
Yes No N/A
No ..N/A
Yes LI§ • N/A
Ye No. N/A
Yes N ' N/A
Yes wi NIA
des:) N/A
h
Yes No - N/A
Yes No N/A
Yes No N/A
Yes No N/A
Yes No N/A
Yes No N/A
Yes No N/A
Yes No. N/A
-Yes No N/A
Yes No N/A
Yes No N/A
Yes No NIA
. Yes No N/A
• Yes No N/A
.Yes No N/A
Yes No N/A
• Yes No N/A
Yes No N/A
13. Screening:
a. Manual
b. -Mechanical Gcvr GF S�ot'�'1� E
c. Buildup of de ris : .
d. Screenings properly disposed of.
Page 2
7-2-'h'EE. c.47 Fe?cif;
14. Grit Removal:
a. Excessive organic content in the grit chamber
b. Excessiveodors
c. Grit properly disposed of.
15: • Primary clarifier:
a. Excessive gas bubbles'
b. • Black and odorous wastewater
c. Poor suspended solids removed .
d:• Excessive buildup of'solids-in center well of circular clarifier
e. Weirs level
f. Weir blockage • .
g. Evidence of short circuiting
h. Lack of adequate scum removal
I. Excessive floating sludge
j. Broken sludge scraper.
16 Trickling Filter:_
a. Trickling filter ponding(indicating clogged media) •
b: Leak at center column of trickling •filter's- distribution arms.
c.. Uneven distribution of flow on trickling filter surface
• d.' • Uneven or discolored growth.
-e. Excessive sloughing of growth •
_ f. - Odor
g. • Clogging of trickling filter's distribution arm orifices
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 NIA , 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 NIA) e. Shaft, bearing, drive gear, or motor failure on disk or brush aerators.
Page 3
Cy_ pi) No NrA
Yes i T N/A
Yes No 63
No N/A
NIA
Yes
Yes
Yes
Yes No
Yes No
Yes No
Yes No
Yes N/A
Yes N/A
Yes i o N/A.
.Yes N/A •
Yes ' ' N/A.
Yes o) N/A
Yes i 9) • N/A
N/A
No N/A
o N/A
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
18. Activated Sludge Basins/Oxidation Ditches:
a. Dead spots
b. Failure of surface aerators
c. Air rising in clumps
d: Dark foam or bad color.,
e.. Thick billows of White, sudsy foam
f. Air rising unevenly
g. Excessive air leaks in compressed air piping.
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.
2
/"1 21.
N/A
N/A
N/A
N/A
N/A
N/A
(re No N/A
) No N/A •
j No N/A •
Yes No NiA
Yes No 2,
Yes No ")IL4)
Yes No NiA
Yes No N/A
Secondary Clarifier:
a. Excessive gas bubbles on surface
b. Unlevel overflow weirs
c. Weir blockage
d. Evidence of short circuiting
e. Excessive buildup of solids in center well of circular clarifier
f. Pin floc in overflow
g. Ineffective scum rake
h. Floating sludge on surface
i. Excessive high sludge blanket
j. Clogged sludge withdrawal ports on secondary clarifier.
Filtration:
a: ' Filter surface clogging
. Short filter run
c. Gravel displacement' of filter media
d. Loss of filter media during backwashing
e. Recycled filter. backwash water in excess of 5 percent
• f. Formation of mudballs in filter media.
22. Chlorination Unit:
Sludge buildup in contact chamber
Gas bubbles
Floating scum and/or solids.
Adequate ventilation of chlorine feeding room and storage area
NIOSH-approved 30 minute air pack •
All standing chlorine cylinders chained in place
All personnel trained in the use of chlorine
Proper chlorine feed, storage,_ and reserve supply.
a.
b.
c.
d.
e.
f.
g•
h.
Page 4
23. Ultraviolet radiation disinfection present and in use.
7—Th 24. Dechlorination:
N/A
N/A
NIA
Yes No
Yes No
Yes No
Yes No
a. Proper storage of sulfur dioxide cylinders
b. Adequate ventilation of sulfur dioxide feeding room
c. Automatic sulfur dioxide feed or feedback control not operating
properly.
25. Aerobic Digester:
Yes N/A a ExcessiVe foaming in tank
Yes 9) N/A: b. Noxious odor
Yes No N/A c. Mechanical aeration failure
Yes No N/A d. Clogging of diffusers.
26. naerobic Digester:
Yes No N/A 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 (NIg',-- ) N/A.:..a. Poor sludge distribution on drying beds.
?;-.1 No N/A b. Vegetation in drying beds
_13) No N/A c. Dry sludge remaining in drying beds •
6..eS) No NIA d. Dry sludge stored on site
(es) No N/A e. Filtrate from sludge drying beds returned to front. of plant
(Ye) No ' NIA f. Approved:disposal site for the sludge
iYes) No N/A EY... Sludge land applied.
.......„
Yes No
Yes 'NO
• Yes No
yes No
Yes No
Yes No
Yes No
N/A
N/A
N/A
N/A
N!A
1N/A
28. Fitter Press:
A. High level of solids in filtrate from filter presses or vacuum filters
-b. Thin filter cake caused by poor dewatering
c. Sludge buildup on beltsand/or rollers of filter press
d. Excessive moisture in belt filter press sludge cake.
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
No N/A
30. Plant Effluent:
a. (Excessive suspended solids turbidity, foam, grease, scum; color, and
other macroscopic particulate matter present
Yes (N N/A b. Potential toxicity (dead fish, dead plant at discharge)
Yes i o,' N/A c. Outfall discharge line easily accessible.
31. Flow. Measurement:
es).No N/A - a. Proper placement of flow measurement device
es No N/A b, Flow meter calibrated :. .
Yes go,!:.N/A c: Buildup of solids in flume or weir
Yes c7 N/A d. Broken or cracked flume or weir Yes�y
No -
" e:..Properly:functioning magnetic flometer
. :
Yes No f. ;Clogged or broken stilling wells. -
Yes No JA` g. Weir plate edge corroded or damaged
) No N/A h. System capable of measuring maximum flow
Yes No N/A i. Flow measurement error less than 10N..
32. Sampling:
es -iNo N/A. a. Sampling and analysis completed on parameters specified by permit
'S No N/A
b. Samples refrigerated during compositing
es,) No . N/A c. Composite sample temperatures. maintained at 0 to 4 degrees Celsius
during sampling
d. Contract laboratory used for sample analysis
e. Composite samples obtained are flow proportional.
es J No . N/A
e_, No . N/A
RECORDKEEPING AND REPORTING
teilsT) No N/A 1. Records and reports maintained as required by permit.
cs? No N/A 2. All required information available, complete, and current.
pNo N/A 3. Recordsmaintained for.3 years and all sludge records maintained for 5
years.
/Yes No N/A 4. Analytical results consistent with data reported on DMRs.
5. Sampling and analyses data adequate and include:
e ' No N/A a. Dates, times, and location of sampling
No N/A b. Name of individual performing sampling
es) No N/A c. Results of analyses and calibration
Y.es) No N/A . d. Dates o.f analyses.
es) No N/A e. Name of person performing analyses.
L'YF)No N/A
ee&s No. N/A
No N/A
6. Monitoring records adequate and include;
a Monitoring charts kept for 3 years
b. Flowmeter calibration records kept for .3'years.
Page 6
No N/A 7. Laboratory equipment calibration and maintenance records adequate.
No N/A 3. BOD incubator temperature maintained at 20 +/- 1 Degrees Celsius
and the temperature maintained in a log for:every day of operation.
9. Fecal coliform incubator maintained at 44.5+/- 0.2Degrees
Celsius and the temperature maintained in a log for every`day of
operation.
10. Plant records' adequate and include
EV No. N/A a. 0 & M Manual
es No N/A b. "As -built" engineering drawings
es) No N/A c. Schedules and dates of equipment maintenance repairs
es No N/A d. Equipment data cards.
Yes No �N/A11:... Permittee is meeting compliance schedule:
Yes) No N/A
9NoN/A
s1 No . N/A
'No N/A-
• es ? No N/A
es No . N/A
Revised 7/11/00
by Belinda Henson'
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.
16. Current copy of the complete NPDES permit on site.
17. Facility description verified as contained in NPDES permit.