NC0043176_Compliance Biomonitoring_20021126

Ala,
NCDENR
North Carolina Department of Environment and Natural Resources
Michael F. Easley, Governor
November 26, 2002
Mr. Joseph Campbell
Public Utilities Director
City of Dunn
P.O. Box 1065
Dunn, NC 28335
SUBJECT: Compliance Biomonitoring Inspection
City of Dunn Black River
Wastewater Treatment Plant (WWTP)
NPDES Permit No. NC0043176
Harnett County
Dear Mr. Campbell:
William G. Ross, Jr., Secretary
Alan Klimek, Director
Division of Water Quality
Enclosed you will find a copy of the Compliance Biomonitoring Inspection report
for the inspection conducted the week of October 28, 2002. The inspection included the
same objectives as that of a routine Compliance Inspection (conducted on October 28, 29
and 31) 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 whole effluent
sample was collected at Outfall 001 from the 24-hour composite of October 29 and
November 1 for use in a chronic Ceriodaphnia dubia pass/fail toxicity test. This sample
was sent to the Division of Water Quality (AT) Laboratory (located on Reedy Creek
Road in Raleigh). The Whole Effluent Toxicity pass/fail test results using these samples
resulted in a "Pass". Test results for these samples indicate that the effluent would not
be predicted to have water quality impacts on receiving water. The plant effluent
composite sample that was taken by DWQ-FRO at the Dunn/Black River WWTP Outfall
001 during the time period of 01:00 PM on October 28to 01:00 PM on October 29 were
analyzed for the following parameters (which are currently in your NPDES Permit): Total
Suspended Solids (TSS), Biochemical Oxygen Demand (BOD), Ammonia Nitrogen,
Total Nitrogen (Nitrate-N plus Nitrite-N plus Total.Kjeldahl-Nitrogen). The chemistry
analyses were sent to the Division of Water Quality Chemistry Laboratory, located on
Reedy Creek Road in Raleigh. The results of all laboratory tests will be forwarded to
you when they are completed.
Where recommendations are cited, we ask that you provide a written description
of how each has. or will be addressed. We ask that your response and plan of action be
forwarded to the Fayetteville Regional Office by January 13, 2003.
Fayetteville Regional Office
225 Green Street — Suite 714, Fayetteville, North Carolina 28301-5043
Phone: [phone]/FAX: [phone] Internet: www.enr.state.nc.us/ENR
An Equal Opportunity 1 Affirmative Action Employer — 50% Recycled 110% Post Consumer Paper

We appreciate the cooperation of Bobby Burnett (ORC), Mark Brantley
(Chemist), and your staff at the WWTP. The WWTP appears to be well maintained.
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 Specialist
Id!
Enclosure: Facility Site Review
Regional Field Inspectors Check List for Field Parameters
DWQ Aquatic Toxicity Unit Report
cc: Kevin Bowden, DWQ, ESB, ATU
James Meyer, ENR/DWQ Laboratory Section

NPDES COMPLIANCE INSPECTION REPORT
North Carolina Division of Water Quality
Fayetteville Regional Office
Section A. National Data System Coding
Transaction Code: N NPDES NO. NC0043176 Date: 102902 Inspection Type: B
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:
Dunn/Black River WWTP
Entry Time:
1:00 PM Permit Effective Date: 020701
Exit Time/Date: 2:40 PM / 10-28-02 Permit Expiration Date: 060931
Name(s), Title(s) of On -Site Representative(s):
Bobby Burnett (Certified Grade IV) — ORC
Joe Campbell (Certified Grade III) — ORC Backup
Phone Number: [phone]
Name, Title and Address of Responsible Official:
Mr. Joseph Campbell.
P.O. Box 1065
Dunn, NC 28335
Contacted: Yes
Section C: Areas Evaluated during Inspection
(S = Satisfactory, M = Marginal, U = Unsatisfactory, N = Not Evaluated, N/A = Not Applicable)
acility Site,Revievv'.
ahoratory::
Pretreatmerit:_r
Self-Monitor"ing Program:.
Flow Measurement:
fluent/Receiving Waters:.
Compliance Schedule:,
Operation
Iaintenance:

DUNN WWTP
BIOMONITORING EVALUATION INSPECTION performed on October 28, 2002
DESCRIPTION OF WWTP:
3.75 MGD wastewater treatment facility that includes influent pumps, mechanical bar screen,
aerated grit removal, influent flow measurement, aeration basins (4 cells), three final clarifiers,
dual gas chlorination and dechlorination, dual chlorine contact tanks, effluent pumps, effluent
flow meter, cascade discharge, sludge handling including DAF sludge thickener, aerobic sludge
digester, aerated sludge holding tank, and sludge drying beds.
SECTION D: SUMMARY OF FINDINGS/COMMENTS:
PLANT TOUR-
1. Please see the "Facility Site Review", pages 5 through 9 of this report.
2. 30 pounds of chlorine feed was used per day. 50 to 60 pounds per day of sulfur dioxide
were used.
3. The influent compositor refrigerator's temperature was 2.5 ° C.
4. Due to the nitrification of ammonia, approximately 50 pounds of soda ash is used per day
for pH adjustment.
5. During the time of the inspection, the DAF was not in operation.
6. Three influent screw pumps were operational. One was operated at a time during normal
flows. The screw pumps were rotated every 8 hours automatically.
7. The compositor was not flow proportional. 100 mL per 20 minutes was sampled at the
effluent.
LABORATORY TOUR---
1. Expiration dates of the pH buffers:
pH Buffer
Expiration Date
4
01 /30/04
7
12/12/03
10
01 / 15/02
2. Process Control tests:
a. On a daily frequency, the 30-minute settleometer test was performed. The target
for the aeration basin was 700 mL/L.
b. TSS was performed daily on the aeration basin and the Return Activated Sludge.
The target for the MLSS was 3,200 mg/L to 3,400 mg/L.
c. Daily SVI, daily Secchi dish.
d. Sludge Judge was used at the clarifier on a three times per day frequency. The
target was 2 to 3 feet of sludge blanket.
f. BOD, COD, and Microscopy were also performed.
3. The July 2002 DMR was cross-checked with the results from the laboratory benchsheets.
203 points were crosschecked. All were in agreement with the exception that a few of
the temperatures and pH duplicates were not averaged onto the DMR.

COMMENTS:
1. It was noticed that liquid was dripping from the wheelbarrow that holds the bar screen
debris. Some of this liquid appeared to drain from the cement pad to the ground.
2. It was noticed that Liquid was dripping from the dumpster that contained the grit removed
from the grit chamber. It appeared, from the rust deposits on the pavement (from the
dumpster to the nearby stormdrain), that this liquid traveled to the stormdrain.
RECOMMENDATIONS:
1. The flowmeter was not flow proportional: 100 mL per 20 minutes was sampled at the
effluent. It was our understanding that a Parshall Flume will be installed and that the
WWTP will have a flow proportional composite sampling system. Please continue to
install the flow proportional system.
2. Please address #1 and #2 of the Comments section (above). Recommend that the liquids
be captured and returned to the headworks.
Name d Signature of Inspector Agency/Office/Telephone Date
Dale Lopez ; NCDENR/Fayetteville/[phone] 11/26/02
Name and Signature of RevieweAgency/Office/Telephone Date
Belinda Henson :t? weLa.j. `Yr ,-t0o/:'NCDENR/Fayetteville/[phone] 11/27/02
Action Taken
Regulatory Office Use Only
Compliance Status
Noncompliance
_Compliance
Date

Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No N/A 1.
No N/A 2.
FACILITY SITE REVIEW
Treatment units properly operated and maintained.
Standby power or other equivalent provision provided.
The generator is tested every Monday for one hour.
No N/A 3. Adequate alarm system for power or equipment failure is available.
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.
No N/A 5. Sufficient sludge disposed of to maintain treatment process equilibrium.
No N/A 6. The ORC and Backup Operator are officially designated with
NCDENR/DWQ Training and Certification Unit.
No N/A 7. Adequate spare parts and supplies inventory maintained.
No N/A 8. Plant has general safety structures such as rails around or covers over
tanks, pits, or wells.
No N/A 9. Plant is generally clean, free from open trash areas.
10. Screening:
No N/A a. Manual
No N/A b. Mechanical
N/A c. Buildup of debris
No N/A d. Screenings properly disposed of.
Bypass
No
No
11. Grit Removal:
N/A a. Excessive organic content in the grit chamber
N/A b. Excessive odors
No N/A c. Grit properly disposed of.
Aerated Centrifugal Grit Removal
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
N/A
N/A
To Harnett County Landfill
12. 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. Secondary Clarifier (Settling Basin):
Yes INOI N/A a. Excessive gas bubbles on surface
No N/A b. Level overflow weirs
Yes No N/A c. Weir blockage
Yes No N/A d. Evidence of short-circuiting
Yes No N/A e. Excessive buildup of solids in center well of circular clarifier
Yes Nol N/A f. Pin floc in overflow
No N/A g. Effective scum rake
Yes No N/A h. Floating sludge on surface
Yes No I N/A i. Excessive high sludge blanket
Yes Nol N/A j..' Clogged sludge withdrawal ports on secondary clarifier.
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
Yes
Yes No
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
Yes No
Yes No
Yes No
Yes No
L�3
irn
fffi
r
ufi
Lis
N/A
IN/AI
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
IN/AI
13. Trickling Filter:
a. Trickling filter pounding (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.
14. 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.
15. 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 is on the surface.
Yes
Yes
INd
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
17.
N/AI
Filtration:
a. Filter surface clogging
b. 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 ofmudballs in filter media.

Yes
Yes
Yes
Yes
Yes
Yes
IYes
Yes
No
No
No
18.
N/A
N/A
N/A
No N/A
No N/A
No
No N/A
No N/A
N/AI
Yes No
N/A
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. N1OSH-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 reserves supply.
one ton cylinders
19. Ultraviolet radiation disinfection present and in use.
20. Dechlorination:
Yes No N/A 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 operating properly.
Yes
Yes
Yes No
Yes
No
No
No
Yes No
Yes No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
21.
N/A
N/A
N/A
N/A
22.
23.
No N/A
No N/A
No N/A
No N/A
No N/A
No N/A
No N/A
Aerobic Digester:
a. Excessive foaming in tank
b. Noxious odor
c. Mechanical aeration failure
d. Clogging of diffusers.
Anaerobic Digester:
a. Floating cover tilting
b. Gas burner operative
Sludge Drying and/or disposal:
a. Poor sludge distribution on drying beds
b. Vegetation in drying beds
c. Dry sludge remaining in drying beds
d. Dry sludge stored on site
e. Filtrate from sludge drying beds returned to front of plant
f. Sludge disposal through county landfill.
g. Sludge land applied.
24. Filter Press:
Yes No N/A 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 is in belt filter press sludge cake.
Yes No
Yes No
Yes No
N/AI
N/A
N/A
25. Polishing Ponds or Tanks:
a. Objectionable odor, excessive foam, floating solids, or oil sheen 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.

26. Plant Effluent:
Yes No N/A a. Excessive suspended solids, turbidity, foam, grease, scum, color, and
other macroscopic particulate matter present
Yes No N/A b. Potential toxicity (dead fish, dead plant at discharge)
No N/A c. Outfall discharge line easily accessible.
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
27.
No N/A
No N/A
No N/A
No N/A
No
No N/A
No N/A
1N/A
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. Clogged or broken stilling wells
f. Weir plate edge corroded or damaged
g. Flow measurement error less than 10%.
Influent Flow Measurement
May 2002
28. Sampling:
No N/A a. Sampling and analysis completed on parameters specified by permit
No N/A b. Composite sample temperatures maintained at 4 degrees Celsius or
less (but above freezing) during sampling
No N/A c. Contract laboratory used for sample analysis
No N/A d. Effluent composite samples obtained are flow proportional.
RECORDKEEPING AND REPORTING:
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No N/A 1. Records and reports maintained as required by permit.
No N/A 2. All required information is available, complete, and current.
No N/A 3. Records maintained for 3 years and all sludge records maintained for 5 years.
No N/A 4. Analytical results consistent with data reported on DMRs.
5. Sampling and analyses data adequate and include:
No N/A a. Dates, times, and location of sampling
No N/A b. Name of individual performing sampling
No N/A c. Results of analyses and calibration
No N/A d. Dates of analyses
No. N/A e. Name of person performing analyses.
6. Monitoring records adequate and includes:
Yes No N/A a._ Monitoring charts kept for 3 years
No N/A b. Flowmeter calibration records kept for 3 years.
No N/A 7. The pH meter is calibrated daily with two buffers and checked with a third buffer
and properly documented.
Yes
Yes
Yes
No N/A 8. Expiration dates of pH buffers adequate.

Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No N/A 9. All thermometers used in NPDES permit reporting is calibrated annually with an
NIST certified thermometer or a traceable thermometer annually and
documented.
No N/A 10.
The following NPDES permit required parameters are analyzed on site:
pH, BOD, TSS, fecal coliform, temperature, dissolved oxygen.
No N/A 11. The NPDES permit required parameter Total Chlorine Residual is
analyzed by approved method.
No N/A 12. BOD incubator temperature maintained at 20 +/- 1 Degrees Celsius
and the temperature maintained in a log for every day of operation.
No N/A 13. Fecal coliform incubator maintained at 44.5 +/- 0.2 Degree Celsius and
the temperature maintained in a log for every day of operation.
14. Plant records adequate and include:
No N/A a. 0 & M Manual
No N/A b. "As -built" engineering drawings
No N/A c. Schedules and dates of equipment maintenance repairs
No N/A d. Equipment data cards.
Yes No
Yes
N/A
15. Permittee is meeting compliance schedule.
No N/A 16. DMRs complete and include all NPDES permit required parameters.
Yes No N/A 17. The facility has a permitted flow greater than 5 MGD and is required
Yes
Yes
Yes
Yes
Yes
Yes
Yes
to operate seven days per week 24 hours a day.
No N/A 18. ORC visitation logs available and current.
No N/A 19. ORC certified at a level equal to or greater than the classification of the
wastewater facility.
No N/A 20. Backup Operator certified at one level less than the classification of the
wastewater facility or greater.
No N/A 21. Current copy of the complete NPDES permit is on site.
No N/A 22. Facility description verified as contained in NPDES permit.
No N/A 23. Facility analyzes process control parameters for example:
No N/A 24. Industrial Waste Surveys (IWS) sent to all possible Significant Industrial Users
(SIUs) within the last five years (especially new industries).
Name Signature of In�c
Dale Lop
c/t
Agency/Office/Telephone
NCDENR/Fayetteville/[phone]
Date
11/26/02

Regional Field Inspectors Check List for Field Parameters
Name of site to be Inspected: Dunn WWTP Date: 10/29/02
Field certification # (if applicable):
Inspector: Dale Lopez
NPDES #: NC0043176 Region: Fayetteville
I. Circle the parameter or parameters performed at this site.
Residual Chlorine
, Settleable Solids, FI , 001, Conductivity,
II. Instrumentation:
Temperature
A. Does the facility have the equipment necessary to analyze field parameters as circled above?
1. A pH meter
Fischer AR 50
2. A Residual Chlorine meter
3. DO meter
4. A Cone for settleable solids
5. A thermometer or meter that measures temperature.
HACH DR-3000
YSI 52
6. Conductivity meter
III. Calibration/Analvsis:
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 device calibrated
annually against a certified thermometer?
6. For Conductivity, is a calibration standard
analyzed each day of use?
3 pt slope, then ck w/7
Yes
[Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
No
No
No
Yes 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
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
the measuring device documented? Yes No
Comments:
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