NC0037508_Compliance Biomonitoring Insp_20031210

NCDENR
North Carolina. Department of Environment and Natural Resources
Michael F. Easley, Governor
December 10, 2003
Dennis Brobst
Moore County PublicWorks Director
P. O. Box 1927
Carthage, NC 28327
Subject-- COMPLIANCE BIOMONITORING INSPECTION
Moore County Water Pollution Control Plant
NPDES Permit No. NC0037508
Moore County
William G. Ross Jr., Secretary
Alan W. Klimek, P.E., Director
Coleen H. Sullins, Deputy Director
Division of Water Quality
Dear Mr. Brobst:
Enclosed you will find a copy of the Compliance Biomonitoring Inspection report for the inspection conducted
the week of December 1, 2003. The inspection included the same objectives as that of a routine Compliance Evaluation
Inspection (conducted on December 1 & 2) 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 anda recommendation are in Part D. Summary of Findings/Comments of this inspection report. The
results of the (AT) will be forwarded to you when the Division of Water Quality (AT) Laboratory completes them.
Additionally, plant effluent samples were taken at the WWTP outfall for the following parameters which are currently in
your NPDES Permit: total phosphorus, ammonia as nitrogen, nitrate as N, nitrite as N, TKN as N, zinc, copper, silver,
total suspended solids, and five-day biochemical oxygen demand. The results of these parameters will be forwarded to
you when the Division of Water Quality Chemistry Laboratory completes the analyses. You and your staff are
commended for your continued efforts to comply with the NPDES permit. 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.
Dale Lopez
Environmental Specialist
/dl
Enclosures
cc: James Delmo Frye, ORC
Kevin Bowden, DWQ, ESB, ATU
225 Green Street — Suite 714, Fayetteville, North Carolina 28301-5043
Phone: [phone] FAX: [phone] \ Internet: www.enr.state.nc.us/ENR/
NorthCarolina
jVaturallij
An Equal opportunity / Affirmative Action Employer - 50 % Recycled 110 % Post Consumer Paper

United States Environmental Protection Agency
EPA Washington, D.C. 20460 s
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 Code NPDES yr/mo/day Inspection
1 . H 2 Li; 3 I N0003O508 111 121 ' 03/12/01 117
Type Inspector Fac Type
18 U 19I s_I 20 Li
Remarks
21 11111IIIIIII11111!111IIIIII IIIIIIII1I11IIII'II166
Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA Reserved
671 5.0 169 70 LJ 71 U 72 U 731 I 174 751 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)
Moore County WPCF
1060 Addor Road
Aberdeen NC 28315
Entry Time/Date
11:00 AM 03/12/01
Permit Effective Date
00/06/01
Exit Time/Date
03:00 PM 03/12/01
Permit Expiration Date
04/G7/31
Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s)
James D Frve/ORC/910-281-3146/
James Frye//91.0-28I-3146/
lames Frye//910-281-3146/
Other Facility Data
Name, Address of Responsible Official/Title/Phone and Fax Number .
Gary Frick,PO Box 813 Pine Bluff NC 28373//910-281-3146/ Contacted
No
Section C: Areas Evaluated During Inspection.(Check only those areas evaluated)
Permit Flow Measurement Operations & Maintenance Records/Reports
Self -Monitoring Program Facility Site Review Effluent/Receiving Waters
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
Recommendation: In order to reduce the algae buildup at ;:he weirs of the final clarifiers. please repair o
replace the brushes of the Ford .tall. .brush assemblies. The following lint o.. in -plant wastewaters
constitute an average of 0.2. no 0.3 MGD of .flow that were subtracted from the main flow meter reading _..._
reporting onto the DMRs: a) decant from the digesters, b) drainage from the drying beds, c) scum from the
clarifiers, d) all waste activated sludge of MLSS from both the First Stage and
(cont.)
Name(s) and Signature(s) of Inspector(s) Agency/Office/Phone and Fax
Lopez FRO WQ//910-468-1541/3t0-436-0707
Numbers Date
1 /e 4.._
Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date
�9. . mlir`o 3
EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete.

DESCRIPTION OF MOORE COUNTY WATER POLLUTION CONTROL PLANT:
Moore County Water Pollution Control Plant is a Grade IV Biological WPCS. The following is a
brief facility description: raw sewage comes from twelve monitoring/metering stations (the furthest
is Carthage), a Plant Influent sewage flowed through the mechanical center flow bar screen to the
Grit Chamber (with aeration from blower), to two Primary Clarifiers (75 ft diameter by 10 ft deep),
to the First Stage Aeration Basin (70 ft by 30 ft by 15 ft deep, four chambers with air diffusers, with
approximately three hours of retention time), the chemical unit/building houses the blowers that
supply the diffuser air to both the Primary and Secondary Aeration Basins, to the two Intermediate
Clarifiers (90 ft diameter by 12 ft deep), the overflow from the Intermediate Clarifiers goes to the
Second Stage Aeration Basins (90 ft by 30 ft by 15 ft deep, four chambers with air diffusers, with
approximately four hours of retention time), the flow travels to two Final Clarifiers (105 ft diameter
by 12 ft deep), the overflow from the Final Clarifiers goes to the Chlorine Contact Basin (30 minutes
of detention time), the effluent is then dechlorinated with sulfur dioxide, and the dechlorinated Plant
Effluent 001 (with an average of 200 micrograms per liter of chlorine) travels through a 36 inch
diameter ductile iron pipe to the receiving stream, Aberdeen Creek. The waste activated sludge
flows to two Anaerobic Digesters. The digested sludge is then pumped to 36 drying beds (each 100-
ft by 44 ft). The dried sludge is hauled to a lined landfill in Anson County.
SECTION D: SUMMARY OF FINDINGS/COMMENTS:
PLANT TOUR---
1. The following list of in -plant wastewaters constitute an average of 0.2 to 0.3 MGD of flow
that were subtracted from the main flow meter reading for reporting onto the DMRs:
a) decant from the digesters (continuous flow),
b) drainage from the drying beds (continuous flow),
c) scum from the clarifiers (continuous flow),
d) all Waste Activated Sludge (WAS) of MLSS from both the First Stage and the
Second Stage Aeration Basins,
e) any drainage from a tank or a unit when being cleaned.
2. Process control for the wastewater treatment plant was based on the following analyses:
MLSS, turbidity, BOD, ammonia, alkalinity, pH, 30 to 60 minute settleometer, Sludge Age,
F/M ratio, and the clarifier sludge blanket. The Primary Clarifier's sludge blanket is
maintained at 2 ft or less, the Intermediate Clarifier's sludge blanket is maintained at 1 to 11/2
feet of sludge blanket, and the Final Clarifier's sludge blanket is maintained between %2 to 1-
foot depth. The target for the 1't and 2d stages was 1,800 mg/L to 2,000 mg/L.
3. The Plant Influent Fisher Porter Ultrasonic Flowmeter, located at the Parshall Flume, was
calibrated on October 10, 2003 by ISI (within 2% error). It was noted that there was less
than 2% error when the before and after calibration were compared.
4. The refrigerator at the Plant Influent was 3 degrees Centigrade, and the refrigerator at the
Plant Effluent was 0 degrees Centigrade.
5. A Royce Model 711 Suspended Solids/Interface Meter analyzed the Mixed Liquor
Suspended Solids (MLSS).
6. Each trough of the two final clarifiers was continuously brushed with a brush assembly (Ford
Hall) that was attached to the scum arm.

NPDES yr/mo/day Inspection Type
3 I NC0037508 111 121 03 / 12/01 117 18 U
(cont.) 1
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
the Second Stage Aeration Basins, e) any drainage from a tank or a unit when being cleaned. The effluent
DMR for August 2003 was crosschecked with the laboratory bench sheets and with the commercial laboratory report
sheets. There were no discrepancies observed. The :inspection of the areas noted did not reveal any
defeciences.

LABORATORY INSPECTION:
1. Expiration dates of the pH buffers: pH 4 = January 4, 2005
pH 7 = September 2004
pH 10 = May 2005
2. The BOD incubator thermometer indicated 19.5 degrees Centigrade.
3. The operator measured Temperature and Dissolved Oxygen with a YSI meter.
4. TSS drying oven was 103 degrees Centigrade.
5. The pH meter was sloped daily with a three-point calibration technique using the 4, 7, and 10
pH buffers (the NPDES permit limit range is 6 to 9 pH).
6. The following were the NPDES parameters that were analyzed at the facility: Conductivity,
Dissolved Oxygen, Temperature, Total Suspended Solids (TSS), Ammonia as Nitrogen,
Fecal Coliforms, Chlorine residual, and pH.
7. The Plant Effluent 001 DMR for August 2003 was crosschecked with the laboratory bench
sheets and with the commercial laboratory report sheets. There were no discrepancies
observed.
RECOMMENDATION---
1. In order to reduce the algae buildupat the weirs of the final clarifiers, please repair or
replace the brushes of the Ford Hall brush assemblies.
Name a Signature of InspectoJr Agency/Office/Telephone Date
Dale Lopez r�v�(✓ NCDENR/ Fayetteville/ [phone] . 12/10/03

760,ut
abA Azzew-
Section D: Summary of Findings/Comments
Brief Facility Description:
aA/6
544,t0/44,7L
FACILITY SITE REVIEW
No N/A 1. Treatment units properly operated and maintained.
No N/A 2. ' Standby power or other equivalent provision provided.
Yes o N/A 3. Adequate alarm system for power or equipment failure 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.
Yes
No N/A 6. The ORC and Backup Operator are officially designated with
NCDENR/DWQ Training and Certification Unit.
0-esNo N/A 7. Adequate spare parts and supplies inventory maintained.
,es % No N/A 8. Plant has general safety structures such as rails around or covers over
tanks, pits, or wells.
Yes No N/A 9. Plant is generally clean, free from open trash areas.
Yes
10. Screening: ,
No N/A a. Manual C>>�G4`l ,,C1'�'t��
No N/A b. Mechanical (C&uTE, FLeu, 8/94 .Se/et-EN)
N/A c. Buildup of debris
No N/A d. Screenings properly disposed of. CE, F1)
11. Grit Removal:
N/A a. Excessive organic content in the grit chamber
N/A b. Excessive odors
N/A c. Grit properly disposed of. (44soA) oaf II 1-4 D F/4-0

Page 2
12. Primary clarifier:
Yes e. N/A a. Excessive gas bubbles
Yes �o& N/A b. Black and odorous wastewater
Yes to N/A c. Poor suspended solids removed
Yes a. N/A d. Excessive buildup of solids in center well of circular clarifier
60es. " o N/A e. Weirs level
Yes r. N/A f. Weir blockage
Ye k 1 o N/A g. Evidence of short circuiting
N/A h. Lack of adequate scum removal
Yes N/A i. Excessive floating sludge
Yes N/A j. Broken sludge scraper.
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes No
Yes No
Yes No
Yes No
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
13. 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.
14. Activated Sludge Basins/Oxidation Ditches:
a. Dead spots
b. Failure of surface aerators
/A c. Air rising in clumps
N/A d. Dark foam or bad color
N/A e. Thick billows of white, sudsy foam
N/A f. Air rising unevenly
N/A 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 on surface.

Page 3
No
f iN,gL
--H5,4 etfpe,f/EWS IMP A 549Le.
16. Secondary Clarifier: /U.0 A�t o,t i DE/9GQ4e B OI L D UA
•R7r 'rile �/LIcIIQS
N/A a. Excessive gas bub les on sur ace
N/A b. Level overflow weirs
N/A c. Weir blockage
Yes N/A d. Evidence of short circuiting
Yes o N/A e. Excessive buildup of solids in center well of circular clarifier
Yes o . N/A f. Pin floc in overflow c,4iti PL .w.4) etz( Alui.temtal yim iehA4 Cam)
eggo N/A g. Effective scum rake
Yes T N/A h. Floating sludge on surface
Yes o N/A i. Excessive high sludge blanket
Yes o N/A j. Clogged sludge withdrawal ports on secondary clarifier.
17. Filtration:
Yes No N/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.
18. Chlorination Unit:
Yes N/A a. Sludge buildup in contact chamber
Yes T N/A b. Gas bubbles
Yes N/A c. Floating scum and/or solids
I\ To N/A d. Adequate ventilation of chlorine feeding room and storage area
No N/A e. NIOSH-approved 30 minute air pack
No N/A f. All standing chlorinecylinders chained in place
No N/A g. All personnel trained in the use of chlorine
No N/A h. Proper chlorine feed, storage, and reserve supply.
Yes No
19. Ultraviolet radiation disinfection present and in use:
20. Dechlorination:-
No o. N/A a. Proper storage of sulfur dioxide cylinders
pes
No N/A b. Adequate ventilation of sulfur dioxide feeding room
To N/A c. Automati su fur diox}}de feed or eedback control operating
properl � All/A-tat57u)-1
Yes No
Yes No
Yes No
Yes No
N/A'
N/A
N/A
N/A
21. Aerobic Digester:
a. Excessive foaming in tank
b. Noxious odor
c. Mechanical aeration failure
d. Clogging of diffusers.

Page 4
22. Anaerobic Digester:
Yes To N/A a. Floating cover tilting
No N/A b. Gas burner operative
Yes
Yes
Yes
No
No
es
Yes No
Yes No
Yes No
Yes No
23. Sludge Drying and/or disposal:
N/A a. Poor sludge distribution on drying beds
N/A b. Vegetation in drying beds
N/A c. Dry sludge remaining in drying beds.
N/A d. Dry sludge stored on site
N/A e. Filtrate from sludge drying beds returned to front of plant
N/A f. Sludge disposal through county landfill.
N/A g. Sludge land applied.
N/A
N/A
N/A
N/A
24. Filter 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 belts and/or rollers of filter press
d. Excessive moisture in belt filter press sludge cake.
25 Polishing Ponds or Tanks:
Yes No N A/ a. Objectionable odor, excessive foam, floating solids, or oil sheens on
water surface
Yes No N/A b. Solids or scumaccumulations in tank or at side of pond
Yes No N/A, c. Evidence of bypassed polishing ponds or tanks because of low
capacity.
26. Plant Effluent:
Yes N/A a. Excessive suspended solids, turbidity, foam, grease, scum, color, and
other macroscopic particulate matter present
Yes (Ny) N/A b. Potential toxicity (dead fish, dead plant at discharge)
No N/A c. Outfall discharge line easily accessible.
xwfL.0 JT
27.4 Flow Measurement:
No N/A a. Proper placement of flow measurement device
No N/A b. Flow meter calibrated 00/3o/ 3 h - s".4 C'.�L�a-Wee�d�.-
Yes o N/A c. Buildup of solids in flume or weir / „
Yes o N/A • d. Broken or cracked flume or weir U
Yes No / e. Clogged or broken stilling wells
Yes No / f. Weir plate edge corroded or damaged
No /A g. Flow measurement error less than 10%.

Page 5
No N/A
gNo N/A
No N/A
No N/A
28. Sampling:
a. Sampling and analysis completed on parameters specified by permit
b. Composite sample temperatures maintained at 4 degrees Celsius or
less (but above freezing) during sampling
c. Contract laboratory used for sample analysis
d. Effluent composite samples obtained are flow proportional.
RECORDKEEPING AND REPORTING
es No N/A 1. Records and reports maintained as required by permit.
gNo N/A 2. All required information available, complete, and current.
es No N/A 3. Records maintained for 3 years and all sludge records maintained for 5
years.
e�s No N/A 4. Analytical results consistent with data reported on DMRs. CHEckCD 41/01)5r ao031
5. Sampling and analyses data adequate and include:
No N/A
No N/A
a. Dates, times, and location of sampling
No N/A b. Name of individual performing sampling
e No N/A c. Results of analyses and calibration
d. Dates of analyses
es No N/A e. Name of person performing analyses.
6. Monitoring records adequate and include:
No N/A a. Monitoring charts kept for 3 years
No N/A b. Flowmeter calibration records kept for 3 years.
Yes No N/A 7. The pH meter is calibrated daily with two buffers and checked with a
third buffer and properly documented.
de; No N/A 8. Expiration dates of pH buffers adequate.
es 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, Temperature, Dissolved Oxygen and Chlorine Residual.

Page 6
eNo N/A 11. The NPDES permit required parameter Total Chlorine Residual is
analyzed by approved method.
6.e- 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(NPR r tt yam)
Yes No /A d. Equipment data cards.
Yes No 15. Pennittee is meetingcompliance schedule.
No N/A 16. DMRs complete and include all NPDES permit required parameters.
No N/A 17. The facility has a permitted flow greater than 5 MGD and is required
to operate seven days per week 24 hours a day.
No N/A 18. ORC visitation logs available and current.
Yes No N/A 19. ORC certified at a level equal to or greater than the classification of
the wastewater facility.
es No N/A 20. Backup Operator certified at one level less than the classification of
the wastewater facility or greater.
Cf-9 No N/A 21. Current copy of the complete NPDES permit on site.
es No N/A 22. Facility description verified as contained in NPDES permit.
es No N/A 23. Facility analyzes process control parameters for example: MLSS,
MCRT, Settleable Solids and others that are applicable.
No N/A 24. Industrial Waste Surveys (IWS) sent to all possible Significant
Industrial.Users (SIUs) within the last five years (especially new
industries).
Revised 7/16/01
by Belinda Henson

ATA
NCDENR
North Carolina Department of Environment and Natural Resources
Michael F. Easley, Governor
February 11, 2004
Phillip Boles
Moore County Public Works Director
703 Pinehurst Avenue
P.O. Box 756
Carthage, NC 28327
William G. Ross Jr., Secretary
Alan W. Klimek, P.E., Director
Coleen H. Sullins, Deputy Director
Division of Water Quality
Subject: COMPLIANCE BIOMONITORING INSPECTION
LABORATORY RESULTS
Moore County Water Pollution Control Plant
NPDES Permit No. NC0037508
Moore County
Dear Mr. Boles:
This letter concerns the laboratory results of samples that were collected during the
Compliance Biomonitoring Inspection that was conducted during the week of December 1, 2003.
24-hour Outfall 001 effluent composite samples were collected on December 2 and December 5
by Dale Lopez (DWQ-FRO) for use in a chronic Ceriodaphnia dubia pass/fail toxicity test. The
Division of Water Quality Aquatic Toxicology Laboratory, located on Reedy Creek Road in
Raleigh, completed the aquatic toxicity analysis. The test using these samples resulted in a pass,
but these results should not be used for compliance monitoring purposes. The test was deemed
invalid due to organism feeding criteria. Additionally, the Division of Water Quality Chemistry
Laboratory (located on Reedy Creek Road in Raleigh) completed the testing of samples from the
December 2nd 24-hour composite sample:
Analyses Parameters
Outfall 001
Total Suspended Solids (TSS)
12 mg/L
NH3 as N
0.02 mg/L
TKN as N
1.4 mg/L
_
NO2 plus NO3 as N
22 mg/L
Total Phosphorus as P
2.6 mg/L
BOD
12 mg/L
225 Green Street — Suite 714, Fayetteville, North Carolina 28301-5043
Phone: [phone] \FAX: [phone] \ Internet: www.enr.state.nc.us/ENR/
Equal Opportunity I Affirmative Action Employer - 50 % Recycled t 10 % Post Consumer Paper
_A:
North
Carolina
Naturally

Mr. Boles
Page 2
February 11, 2004
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.
Sincerely,
i
Dale Lopez
Environmental Specialist
Idl
cc: Kevin Bowden, DWQ, ESB, ATU
James Delmo_ Frye, ORC, Moore County Water Pollution Control Plant