NC0020656_Biomonitoring Inspection_20090720

Beverly Eaves Perdue
Governor
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Coleen H. Sullins
Director
July 20, 2009
Robert Ellis, Treatment Plants Director
City of Laurinburg
P.O. Box 249
Laurinburg, NC 28379
Subject: • Biomonitoring Inspection
City of Laurinburg Wastewater Treatment Plant
NPDES Permit No. NC0020656
Scotland County
•
Dear Mr. Ellis:
Dee Freeman
Secretary
Enclosed you will find a copy of the Biomonitoring Inspection report for the
inspection that was conducted during the week of July '6, 2009. The inspection included
the same objectives as that of a routine Compliance Evaluation Inspection (conducted in
parts during the same week) 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, recommendations, and
requirements are in Part D: Summary of Findings/Comments of this inspection report. I
collected a 24-hour effluent composite sample at Outfall 001 on July 7 and July 10 for a
chronic Ceriodaphnia dubia pass/fail toxicity test. The aquatic toxicity samples were sent
to the Division of Water Quality Aquatic Toxicology. Laboratory, located on Reedy Creek
Road in Raleigh. Additionally, the July 7th 24-hour Outfall 001 composite was also
sampled and analyzed for the following parameters by the Division of Water Quality
Chemistry Laboratory, located on Reedy Creek Road in Raleigh: Biochemical Oxygen.
Demand (BOD), Total Suspended Solids (TSS), Ammonia as nitrogen, Total Kjeldahl
Nitrogen, Nitrite plus Nitrate as nitrogen, Total Phosphorus, Total Copper, and Total Zinc.
The results of all of the above mentioned analyses will be sent to you when they are
completed.
The intent of the following recommendations is based upon the goal of achieving
"optimum efficiency" for plant operation as required by the Laurinburg (Leith Creek)
NPDES Permit in Section C (2.) Proper Operation and Maintenance: "The permittee shall
at all times provide the operation and maintenance resources necessary to operate the
existing facilities at optimum efficiency."
225 Green St., Suite 714, Fayetteville, NC 28301-5043
Phone: [phone] FAX: [phone] d Customer Service: 1-877-623-6748
Internet: www.ncwaterqualily.org
An Equal Opportunity 1 Affirmative Action Employer
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NortlaCaroli.na
Naturally

Mr. Ellis
July 20, 2009
Page 2
Recommendation: #1
Please repair the chlorine contact chamber wall, between Side
#1 and Side #2, so that the integrity of the wall is restored. There were a few holes in
the wall between Side #1 and Side #2 of the Chlorine Contact Chamber Unit, as
observed when Side #1 of the chlorine contact chamber was drained for routine
cleaning on the first day of this BIO inspection.
In order to optimize the accuracy of the ultrasonic flow sensor
and possibly reduce the temperature variation that may be caused by heat from
sunlight upon the sensor, please install a shade hood for the ultrasonic sensor. For
answers to technical questions, please phone ISCO (1-800-228-4373), Service and
Support (Dennis, technician).
Please clean the effluent flume, as the walls and floor of the
flume do not appear to be smooth and clean of deposits and growth. For answers to
technical questions, please phone ISCO (1-800-228-4373), Service and Support
(Dennis, technician).
Recommendation #2:
'Recommendation #3:
Recommendation #4:
Please position the sample tubing so that it does not have the
potential to interfere with the accuracy of the ultrasonic flow meter, because the
sample tubing was positioned directly in front of the ultrasonic sensor.
Requirement #1:
Please repair the following mentioned out of service pumps. One of
the RAS pumps on Side #1 was out -of -service; the other two RAS pumps were
operational. Two influent pumps were also out -of -service.
: Please notify this Office when the pumps are operational again.
Concerning the EQ Basin, please explain how rain events are
handled, and how the EQ Basin is routinely used.
Please service the 24-hour composite flow proportional sampling
device and send this Office the technician's report that the flow proportional sampler
is operating correctly, with specific information from the flow meter technician noted
as to the mL of volume of each sample that is grabbed per aliquot, and the volume of
effluent flow that occurs between each grab sample that makes up the 24-hour
composite. On the first day of this inspection (Monday, July 6th), the effluent flow
proportional sampler was measured as dispensing 425 mL per grab aliquot. The 24-
hour composite container was two-thirds full at 10:40 AM„ and this was
approximately three hours after the beginning of the 24-hour sampling period. The
operator said that the flow -proportional sampler was originally set to pull 150 mL for
every 62,500 gallons of effluent flow. The flow meter and the 24-hour flow
proportional sampler were calibrated on March 5, 2009, and the flow meter technician
noted that he had checked the flow proportional sampler for proper operation. The
operator said that a faulty pump assembly had caused a malfunction of the flow
proportional sampler. The new pump assembly was installed on July 9th
Although the generator's run time log was not inspected during this
BIO inspection, it is required to keep a log of all generator run time, and it is highly
recommended that a routine generator runtime schedule be implemented.
Requirement #2
Requirement #3:
'Requirement #4
Requirement #5

Mr: Ellis
July 20, 2009
- Page 3
Please send a written response to this Office by September 1, 2009 concerning the
status of the above mentioned recommendations and requirements. We appreciate the time
and professional courtesy that was extended by you and your staff during the inspection.
If you have any questions or comments concerning this report, please contact me at (910)
433-3312.
Dale Lopez
Environmental Specialist
/d1
Enclosures: EPA Water Compliance Inspection. Report
Regional Field Inspectors Check List for Field Parameters
cc: Central Files
EFayetteoleRgion_a'lri_O,fficeFles
Ricky Odum, City of Laurinburg, (Backup-ORC)

United States Environmental Protection Agency
E n /� Washington, D.C. 20460
r/`1 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 I NI 2 151 31 NC0020656 111 121 09/07/06 117
Type Inspector Fac Type
18I BI 19I sI 20I
IIIIIII66
Remarks
21IIII IIIIIII_IIIIIIIIIIIIIIIIIIIIIIIIIIIII
Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA —Reserved---
67 I 5. 0 169 70 13 I 711 1 72 I NI 73I 1174 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)
Leith Creek WWTP
Hall St Extension
Laurinburg NC 28352
Entry Time/Date
10:30 AM 09/07/06
Permit Effective Date
04/11/01
Exit Time/Date
03:00 PM 09/07/06
Permit Expiration Date
09/08/31
Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s)
///
Robert A. Ellis/ORC/910-277-0214/
Other Facility Data
Name, Address of Responsible Official/Title/Phone and Fax Number
Contacted
Robert A. Ellis,PO Box 249 Laurinburg NC 28353//910-277-0214/ No
Section C: Areas Evaluated During Inspection (Check only those areas evaluated)
Permit Flow Measurement Operations & Maintenance • Records/Reports
Self -Monitoring Program Sludge Handling Disposal • Facility Site Review • Effluent/Receiving Waters
Laboratory
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
(See attachment summary)
1
Name(s) and ture(s) of Inspector(s) Agency/Office/Phone and Fax Numbers Date
Dale Lopez t ��,,q�p��� \ / FRO WQ//910-433-3300 Ext.712/ 7
Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date
44(o .,J. g7/2oh, 9
EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete.
Page # 1

31
NPDES
NC0020656
111 121
yr/mo/day
09/07/06
Inspection Type
17 18I B
(cont.) 1
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
The intent of the following recommendations is based upon achieving "optimum efficiency" for plant
operation as required by the Laurinburg (Leith Creek) NPDES Permit in Section C (2.) Proper Operation
and Maintenance: "The permittee shall at all times provide the operation and maintenance resources
necessary to operate the existing facilities at optimum efficiency."
Recommendation: #1 please repair the chlorine contact chamber wall, between Side #1 and Side #2, so
that the integrity of the wall is restored. There were a few holes in the wall between Side #1 and Side #2 of
the Chlorine Contact Chamber Unit, as observed when Side #1 of the chlorine contact chamber was drained
for routine cleaning on the first day of this BIO inspection.
Recommentation #2: In order to optimize the accuracy of the ultrasonic flow sensor and possibly reduce the
temperature variation that may be caused by heat from sunlight upon the sensor, please install a shade
hood for the ultrasonic sensor. For answers to technical questions, please phone ISCO (1-800-228-4373),
Service and Support (Dennis, technician).
Recommentation #3: Please clean the effluent flume, as the walls and floor of the flume do not appear to be
smooth and clean of deposits and growth. For answers to technical questions', please phone ISCO
(1-800-228-4373), Service and Support (Dennis, technician).
Recommentation #4: Please position the sample tubing so that it does not have the potential to interfere
with the accuracy of the ultrasonic flow meter, because the sample tubing was positioned directly in front of
the ultrasonic sensor.
Requirement #1: Please repair the following mentioned out of service pumps. One of the RAS pumps on
Side #1 was out -of -service; the other two RAS pumps were operational. Two influent pumps were also
out -of -service.
Requirement #2: Please notify this Office when the pumps are operational again.
Requirement #3: Concerning the EQ Basin, please explain how rain events are handled, and how the EQ
Basin is routinely used.
Requirement #4 Please service the 24-hour composite flow proportional sampling device and send this
Office the technician's report that the flow proportional sampler is operating correctly, with specific
information from the flow meter technician noted as to the mL of volume of each sample that is grabbed per
aliquot,.and the volume of effluent flow that occurs between each grab sample that makes up the 24-hour
composite. On the first day of this inspection (Monday, July 6th), the effluent flow proportional sampler was
measured as dispensing 425 mL per grab aliquot. The 24-hour composite container was two-thirds full at
10:40 AM„ and this was approximately three hours after the beginning of the 24-hour sampling period. The
operator said that the flow -proportional sampler was originally set to pull 150 mL for every 62,500 gallons of
effluent flow. The flow meter and the 24-hour flow proportional sampler were calibrated on March 5, 2009,
and the flow meter technician noted that he had checked the flow proportional sampler for proper operation.
The operator said that a faulty pump assembly had caused a malfunction of the flow proportional sampler.
The new pump assembly was installed on July 9th.
Requirement #5 Although the generator's run time log was not inspected during this BIO inspection, it is
required to keep a log of all generator run time, and it is highly recommended that a routine generator
runtime schedule be implemented.
NOTES AND OBSERVATIONS:
1. SLUDGE: Every time that the operators have wasted last week they were able to decant it the next day
at 30,000 gallons. At the time of this inspection, there was 10 feet of available room in the 650,000-gallon
sludge holding tank, which equals 340,000 gallons of capacity available. The operator mentioned that the
last time that the sludge was hauled was during the latter part of last year. The beds were run out
approximately two and a half weeks ago. The 650,000 gallon holding tank was decanted approximately
one week ago, as far down as the decant would go, approximately 11 feet. The tank holds 34,000 gallons
Page # 2

Permit: NC0020656 Owner - Facility: Leith Creek VWVTP
Inspection Date: 07/06/2009 Inspection Type: Bioassay Compliance
per foot (approximately 350,000 gallon capacity). Drying bed #4 (in the new plant) will be moved out during
the latter part of this year. The plan is that they will not haul until the capacity of the drying bed has been
filled with dried sludge; this occurs at a frequency of approximately every two and a half years. A local
farmer will probably haul the dried sludge from the dried sludge holding area. EMA will haul the wet sludge
from the digesters to LMAC for land application. At the time of this inspection, the VWVfP was wasting
from Clarifier #3. The sludge blanket in Clarifier #3 was 5 feet on the morning of July 6th..
2. GENERATOR: The generator at the influent pump station handles everything at the influent pump
station. The influent pump station generator diesel tank was 3/4 full. The generator for the VWVTP can
handle the new and the old VVVVTPs, the blowers, and the office. Load Management checks the generators
under load; but, if they don't then the operator will check the generator. The generators are checked once
per week, with Load Management. On the day of this inspection, the influent pump station generator was
started (but, not placed under load).
3. DRYING BEDS AND SEPTAGE HAULERS: A drying bed that was located on the far end of the drying
bed area in the old plant was used for drying waste from the collection system, as occurs when a pipe is
clogged and is pumped out. Occasionally, a septic tank hauler will discharge (from Scotland County only)
into a manhole that is located near St. Andrews College.
4. LABORATORY: The TSS drying oven temperature was measured at 105 degrees Celsius, 44.5
degrees Celsius for the Fecal Coliform water bath, and the refrigerator was at 4 degrees Celsius
5. VVVVTP NOTES: The dechior facility was located on the old plant side, and its discharge was located on
the new plant side. There was automatic switchover of Sulfur Dioxide dechior cylinders. Both grit pumps
were operational.
6. VVVVTP PROCESS CONTROL: On the day of this inspection, the clarifier blankets were between 3 feet
and 5 feet. The MLSS was 3,000 mg/L. As a routine check for the influent pump station alarm system,
everyday the influent pumps are shut off.
Page # 3

Permit: NC0020656 Owner - Facility: Leith Creek W\NTP
Inspection Date: 07/06/2009 Inspection Type: Bioassay Compliance
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:
Permit
(If the present permit expires in6 months or less). Has the permittee submitted a new application?
Is the facility as described in the permit?.
# Are there any special conditions for the permit?
Is access to the plant site restricted to the general public?
Is the inspector granted access to all areas for inspection?
Comment:
Record Keeping
Are records kept and maintained as required by the permit?
Is all required information readily available, complete and current?
Are all records maintained for 3 years (lab. reg. required 5 years)?
Are analytical results consistent with data reported on DMRs?
Is the chain -of -custody complete?
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 andlcurrent?
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
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Page # 4

Permit: NC0020656 Owner - Facility: Leith Creek WWTP
Inspection Date: 07/06/2009 Inspection Type: Bioassay Compliance
Record Keeping
Facility has copy of previous year's Annual Report on file for review'?
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:
Flow Measurement - Effluent
# 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:
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:
Drying Beds
Is there adequate drying bed space?
Is the sludge distribution on drying beds appropriate?
Are the drying beds free of vegetation?
# Is the site free of dry sludge remaining in beds?
Is the site free of stockpiled sludge?
Is the filtrate from sludge drying beds returned to the front of the plant?
# Is the sludge disposed of through county landfill?
# Is the sludge land applied?
(Vacuum filters) Is polymer mixing adequate?
Yes No NA NE
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Page # 5

Permit: NC0020656 Owner - Facility: Leith Creek WNTP
Inspection Date: 07/06/2009 Inspection Type: Bioassay Compliance
Drying Beds Yes No NA NE
Comment: It appeared that there was an excessive amount of dried sludge piled in a
sludge holding bed.
Pump Station - Influent Yes No NA NE
Is the pump wet well free of bypass lines or structures? ❑ 0 ❑ ■
Is the wet well free of excessive grease? ■ ❑ n ❑
Are all pumps present? ■ ❑ ❑ ❑
Are all pumps operable? ❑ ❑ ■ ❑
Are float controls operable? ■ ❑ ❑ ❑
Is SCADA telemetry available and operational? ❑ ❑ ❑ ■
Is audible and visual alarm available and operational? ■ ❑ ❑ ❑
Comment: Two influent pumps were out of servise.
Bar Screens Yes No NA NE
Type of bar screen .
a. Manual ■
b. Mechanical ■
Are the bars adequately screening debris? ■ ❑ ❑ ❑
Is the screen free of excessive debris? ■ ❑ ❑ ❑
Is disposal of screening in compliance? ■ ❑ ❑ ❑
Is the unit in good condition? • ❑ ❑ ❑
Comment: -
Grit Removal Yes No NA NE
Type of grit removal
a. Manual 0
b. Mechanical ■
Is the grit free of excessive organic matter? ■ ❑ n ❑
Is the grit free of excessive odor? ■ ❑ ❑ ❑
# Is disposal of grit in compliance? i• ❑ ❑ ❑
Comment:
Equalization Basins Yes No NA NE
Is the basin aerated? ■ ❑ ❑ ❑
Page # 6

Permit: NC0020656 Owner - Facility: Leith Creek VVVVTP
Inspection Date: 07/06/2009 Inspection Type: Bioassay Compliance
Equalization Basins Yes No NA NE
Is the basin free of bypass lines or structures to the natural environment? ■ ❑ ❑ ❑
Is the basin free of excessive grease? ■ ❑ n n
Are all pumps present? ■ n n n
Are all pumps operable? ■ ❑ ❑ ❑
Are float controls operable? n n n •
Are audible and visual alarms operable? ❑ ❑ ❑ ■
# Is basin size/volume adequate? ■ n n n
Comment:
Secondary Clarifier Yes No NA NE
Is the clarifier free of black and odorous wastewater? ■ n n n
Is the site free of excessive buildup of solids in center well of circular clarifier? ■ n n n
Are weirs level? ■ ❑ n ❑
Is the site free of weir blockage? ■ n n n
Is the site free of evidence of short-circuiting? ■ ❑ ❑ ❑
Is scum removal adequate? ■ n n n
Is the site free of excessive floating sludge? • ❑ ❑ ❑
Is the drive unit operational? ■ ❑ ❑ ❑
Is the return rate acceptable (low turbulence)? • ❑ ❑ ❑
Is the overflow clear of excessive solids/pin floc? ■ n n n
Is the sludge blanket level acceptable? (Approximately 1/4 of the sidewall depth) • ❑ ❑ ❑
Comment:
Aeration Basins Yes No NA NE .
Mode of operation Ext. Air
Type of aeration system Fixed
Is the basin free of dead spots? ■ ❑ ❑ ❑
Are surface aerators and mixers operational? ■ n n n
Are the diffusers operational? n n 1 ❑
Is the foam the proper color for the treatment process? ■ n ❑ ❑
Does the foam cover less than 25% of the basin's surface? • ❑ ❑ ❑
Page # 7

Permit: NC0020656 Owner - Facility: Leith Creek VVVVFP
Inspection Date: 07/06/2009 Inspection Type: Bioassay Compliance
Aeration Basins Yes No NA NE
Is the DO level acceptable? • 0 0 0 •
Is the DO level acceptable?(1.0 to 3.0 mg/I) • n ❑ ❑
Comment:
Disinfection -Gas Yes No NA NE
Are cylinders secured adequately? n n • n
Are cylinders protected from direct sunlight? rl ❑ • ❑
. Is there adequate reserve supply of disinfectant? • ❑ ❑ ❑
Is the level of chlorine residual acceptable? • n fl n
Is the contact chamber free of growth, or sludge buildup? • ❑ 0 ❑
Is there chlorine 'residual prior to de -chlorination? . .n ❑ ❑ ■
Does the Stationary Source have more than 2500 Ibs of Chlorine (CAS No. 7782-50-5)? ❑ ❑ • El
If yes, then is there a Risk Management Plan on site? n n • n
If yes, then what is the EPA twelve digit ID Number? (1000- - )
If yes, then when was the RMP last updated?
Comment:
De -chlorination Yes No NA NE
Type of system ?
Is the feed ratio proportional to chlorine amount (1 to 1)? ❑ El ❑ ■
Is storage appropriate for cylinders? ■
El 11 El
. # Is de -chlorination substance stored away from chlorine containers? • n n n
Comment:
Are the tablets the proper size and type? ❑ ❑. • 11
Are tablet de -chlorinators operational? ❑ n •
11
Number of tubes in use?
Comment:
Standby Power Yes No NA NE
Is automatically activated standby power available? ■ Q n ❑
Is the generator tested by interrupting primary power source? • n
El 11
Is the generator tested under load? • ❑ ❑ ❑
Was generator tested & operational during the inspection? n ❑ • 11
Page # 8

Permit: NC0020656 Owner - Facility: Leith Creek WNTP
Inspection Date: 07/06/2009 Inspection Type: Bioassay Compliance
Standby Power
Do the generator(s) have adequate capacity to operate the entire wastewater site?
Is there an emergency agreement with a fuel vendor for extended run on back-up power?
Is the generator fuel level monitored?
Comment: During this inspection, the influent pump station generator was test (not
under load), but the WVVfP generator was not. tested during this inspection
Pumps-RAS-WAS
Are pumps in place?
Are pumps operational?
Are there adequate spare parts and supplies on site?
Comment: One of the RAS pumps on Side #1 was out -of -service; the other,two RAS
pumps were operational.
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)?
Yes No NA NE
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Page # 9

Permit: NC0020656 Owner - Facility: Leith Creek wwTP
Inspection Date: 07/06/2009 Inspection Type: Bioassay Compliance
Effluent Sampling
Comment: On the first day of this inspection (Monday, July 6th), the effluent flow
proportional sampler was measured as dispensing 425 mL per grab aliquot. The
24-hour composite container was two-thirds full'at 10:40 AM„ and this was
approximately three hours after the beginning of the 24-hour sampling period. The
operator said that the flow -proportional sampler was originally set to pull 150 mL for
every 62,500 gallons of effluent flow. The operator said that a faulty pump assembly
had caused a malfunction of the flow proportional sampler. The new pump assembly
was installed on July 9th.
Yes No NA NE
Page # 10

Regional Field Inspectors Check List for Field Parameters
Name of site to be Inspected: Laurinburq WWTP Date:July 6, 2009
Field certification # (if applicable):
NPDES #:NC0020656
Inspector:Dale Lopez
Region: FRO
I. Circle the parameter or parameters performed at this site.
L esidual Chlorine
, Settleable Solids,
II. Instrumentation:
pH
DO
Conductivity
Temperature
A. Does the facility have the equipment necessary to analyze field parameters as circled above?
1. A pH meter
IYSI 60
2. A Residual Chlorine meter
3. DO meter
HACH DR 2400
NYSI 550
4. A Cone for settleable solids
5. A thermometer or meter that measures temperature.
YSI 60
6. Conductivity meter
III. Calibration/Analysis:
Orion 3 Star
Yes,
Yes
Yes
No
No
No
Yes No
NYes
Yes
No
No
1. Is the pH meter calibrated with 2 buffers and
checked with a third buffer each day of use? Yes No
2. For Total Residual Chlorine, is a check standard
analyzed each day of use? Yes No
3. Is the air calibration of the DO meter performed
each day of use? Yes No
4. For Settleable. Solids, is 1 liter of sample
settled for 1 hour?
Yes No
5. Is the temperature measuring device calibrated
annually against a certified thermometer? Yes No
6. For Conductivity, is a calibration standard
analyzed each day of use? Iles 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?
Yes
Yes
1Yes
[Yes
[Yes
fres
Yes
[Yes
No
No
No
No
No
Comment: pH 10 buffer expiration date = April 2010
pH 4 buffer expiration date = February 2010
PH 7 buffer expiration date = June 2010
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

NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins
Governor Director
July 31, 2009
Robert Ellis, Treatment Plants Director
City of Laurinburg
P.O. Box 249•
Laurinburg, NC 28379.
Subject: Biomonitoring Inspection Laboratory Results
City of Laurinburg Wastewater Treatment Plant
NPDES Permit No. NC0020656
Scotland County
Dee Freeman
Secretary
Dear Mr. Ellis:
Concerning the laboratory analyses for samples that were collected during the week
of the July 6, 2009 Biomonitoring Inspection, the chemistry results are as follows:
Analyses Parameters
Outfall 001 results
Total Suspended Solids (TSS)
19 mg/L
NH3 as N
0.34 mg/L
TKN as N
1.6 mg/L
NO2 plus NO3 as N
23 mg/L
Total Phosphorus as P
3.9 mg/L
BOD
2.9 mg/L
Copper
0.021 mg/L
r
Zinc
0.110 mg/L
In addition, the Ceriodaphnia Chronic toxicity samples that were collected at your
facility during the same week resulted in a "Pass". The two DWQ 24-hour samples
were sent to the Division of Water Quality Aquatic Toxicology Laboratory (located on
Reedy Creek Road in. Raleigh). The DWQ test results for the whole effluent toxicity
samples indicated that the effluent would not be predicted to have water quality impacts on
the receiving water. For additional information, please refer to the Compliance
Biomonitoring Inspection report, dated July 20, 2009.
225 Green St, Suite 714, Fayetteville, NC 28301-5043
Phone: [phone] FAX: [phone] d Customer Service: 1-877-623-6748
Internet. www.ncwaterquality.org
An Equai Opportunity \ Affirmative Action Employer
One.
Nortla Caroli..na
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Mr. Ellis
July 31, 2009
Page 2
We appreciate the time and professional courtesy that was extended by you and
your staff during the inspection. If you have any questions or comments concerning this
report, please contact me at [phone].
Sincerely,
Dale Lopez
Environmental Specialist
/dl
cc: Central Files
Faye` te<ville_1Zegional Office_Fileg)
Ricky Odum, City of Laurinburg, (Backup-ORC)

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IV,e1 542--o
of Caurio6urg
OFFICE OF THE TREATMENT PLANTS DIRECTOR
DENR-FRO
August 28, 2009
DING
Dale Lopez
Environmental Specialist
NC Department of Environment
And Natural Resources
225 Green St., Suite 714
Fayetteville, NC 28301-5043
Re: Biomonitoring Inspection Response
City of Laurinburg Wastewater Treatment Plant
NPDES Permit No. NC002056,-„,7.
Scotland County
Dear Mr. Lopez:
All-Ametica City
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1956 2 3 1967
In response to your
i recommendations,',.and freRtnrernen sduring your Biomonitoring
da' •
Inspection conducted during the *eek:(Sf;W:ifY16-,;,4009, please se'eAhgfollowing:
u...,(..-1
,( Recommendation #1''We=areirilli.6-=prod§§'CiT locating contractors who can
perform this.`,Vpei-9f repair-t0 our chlorine contact chambet-*all. We have been
unsuccessful at this time but will continue to make contact*-ith potential
‹„-,.3:---=',,,
contractors to complete this task.-- ..:- t:.:-.2.-3,-,-- . -- ----
.
R&ommendation #2 Aft3yourrespduset9; oPtirnize-,the accuracy of the ultrasonic
meat ' flow sensor, thetype that'we have i.§•hof ari-ISCO'blit a Milltronic. After speaking
== ',
with you by phone, I have spoken with staff at J.S. Dismuke Inc. about this issue
and they informed me that this unit has an automatic temperature compensation
sensor built in. We will investigate the installation of a shade hood for this
ultrasonic flow sensor.
Recommendation #3 The effluent flume was cleaned on August 25, 2009.
,7 Recommendation #4 The sampling tube has been moved so it will not have the
potential of interfering with the accuracy of the ultrasonic flow meter.
603 LAUCHWOOD DRIVE • P.O. BOX 249 • LAURINBURG, N.C. 28353 • PHONE: [phone] • FAX [phone]

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Requirement #1 The returned activated sludge pump on side 1 will be replaced
with new Davis EMU pumps. Some of the equipment is on site at this time. To
respond to influent pump station pumps out of service all of the pumps at the
influent pump station will be replaced with a different style HOMA pump.
✓ Requirement #2 Charles R. Underwood Inc. is in process of obtaining the
pumps for both the RAS pump station and the Influent pump station. We will
notify your office as the new pumps are installed and in operation.
✓ . Requirement #3 The EQ Basin is utilized mainly during rain events to handle
the excess water that may enter the Influent Pump Station. If the incoming flow
is more than the pump station can handle the excess water flows into the EQ
pump station and pumped to the EQ Basin. As soon as the flow to the Influent
Pump Station has returned to normal the water in the EQ Basin is drained back to
the Influent Pump Station at a rate that will not overwhelm the pumping capacity
of the pump station.
✓ Requirement #4 As we informed you during the inspection, Tech support @
ISCO had recommended a new pump assembly to correct the inaccurate sample
collection volume at the effluent composite sampler. The new pump assembly
was installed July 9, 2009 and the composite sampler is operating properly. Due
b the new pump assembly we did not see the need to occur additional cost for a
srr44'rvice technician to visit the site.
✓ Requirement #5 There is a log of the generators run time inside the generators.
We have im
plemented a routine run time schedule for the first Monday of every
month unless it is a holiday, in that case the generators will be ran the first day
following the holiday.
If you have any questions or comments concerning these matters please contact me at
(910)-277-0214.
Sincerely,
Robert A. Ellis
City of Laurinburg
Treatment Plants Director
cc: Ed Burchins
City Manager
Ricky Odom
Back -Up ORC