NC0043176_Compliance Evaluation Inspection_20200127

ROY COOPER
cove no
MICHAEL 5. REGAN
secretary
S. DANIEL SMITH
Director
Steven Neuschafer
City of Dunn
PO Box 1065
Dunn, NC 28335
NORTH CAROLINA
En viror men tat Quality
February 04, 2020
SUBJECT: Compliance Inspection Report
Dunn WWTP
NPDES WW Permit No. NC0043176
Harnett County
Dear Permittee:
The North Carolina Division of Water Resources conducted an inspection of the Dunn WWTP on
1/27/2020. This inspection was conducted to verify that the facility is operating in compliance with the
conditions and limitations specified in NPDES WW Permit No. NCOO43176. The findings and comments
noted during this inspection are provided in the enclosed copy of the inspection report entitled
"Compliance Inspection Report". The cooperation of Donrie Dukes, facility ORC, and Dishon Allen,
back-up ORC, was greatly appreciated.
There were no significant issues or findings noted during the inspection and therefore, a response to this
inspection report is not required.
Comments:
• The facility was neat and clean during the inspection.
• Sampling and laboratory records were organized and well kept.
• Leaks in the air distribution system were noted during the inspection. Upgrades to the air distribution
system are scheduled to begin in the near future.
• During the inspection, the facility experienced a foaming event at the plant's headworks. An
investigation by the facility indicated the foam likely originated from cleaning solution that was
dumped into the sanitary sewer.
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• As part of the inspection, effluent samples were collected and sent to NC Division of Water Resources
Laboratory for testing. Results for these samples are listed below:
Parameter
Result
MDL
Coliform, MF Fecal*
34 CFU/100ml
1 CFU/100ml
Ammonia as N (NH3-N)
0.74 mg/L as N
0.02 mg/L as N
Nitrate -Nitrite as N (NO3 + NO2-N)
1.3 mg/L as N
0.02 mg/L as N
Total Kjeldahl Nitrogen as N (TKN)
2.0 mg/L as N
0.02 mg/L as N
Total Phosphorus as P (TP)
0.39 mg/L as P
0.02 mg/L as P
Total Suspended Solids
6.8 mg/L
6.2 mg/L
* Fecal coliform sample was analyzed outside of hold time.
If you should have any questions, please do not hesitate to contact Kristen Slodysko with the Water
Quality Regional Operations Section in the Fayetteville Regional Office at 910-433-3300 or via email at
[e-mail].
Sincerely,
IDocuSigned by:
VIS1U& S�6)�SL6 2/21/2020
2C DAF4695DFF454...
Kristen Slodysko, Environmental Specialist
Water Quality Regional Operations Section
Fayetteville Regional Office
Division of Water Resources, NCDEQ
ATTACHMENTS:
Field Parameter Checklist
Compliance Inspection Report
Cc: WQS Fayetteville Regional Office
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D- E Q Favatteuihe Reg'ors:{}ffte 1 t.25GreertStreet,Sit Re 714 I F:wettad"e, North Caro lina2S341

United States Environmental Protection Agency
Form Approved.
EPA Washington, D.C. 20460
OMB No. 2040-0057
Water Compliance Inspection Report
Approval expires 8-31-98
Section A: National Data System Coding (i.e., PCS)
Transaction Code NPDES yr/mo/day Inspection Type Inspector Fac Type
1 IN 1 2 15 I 3 I NCO043176 111 12 I 20/01/27 I17 18 Lam] 19 L G] 201 I
211111 I I I I I I II I I I I I I I I I I I I I I I I I I I I I I I II I I I I I f6
Inspection
Work Days Facility Self -Monitoring Evaluation Rating B1 QA ---------------------- Reserved -------------------
67
2.0 70 71 [.. I 72 73 L_LJ74 751 I I I I I I I80
u
Section B: Facility Data
Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include
Entry Time/Date
Permit Effective Date
POTW name and NPDES oermit Number)
10:OOAM 20/01/27
19/04/01
Dunn WWTP
Susan Tart Rd
Exit Time/Date
Permit Expiration Date
Dunn NC 28335
02:OOPM 20/01/27
23/09/30
Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s)
Other Facility Data
Donrie Eldridge Dukes/ORC/910-892-8162/
Name, Address of Responsible Official/Title/Phone and Fax Number
Contacted
Steven Neuschafer,PO Box 1065 Dunn NC 28335//910-892-2633/
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)
Name(s) and Signature(s) of Inspector(s) Agency/Office/Phone and Fax Numbers Date
Kristen N Slodtsko DWR/FRO WQ/919-433-3300/
DocuSigned y:
6SL .v, J �S6 2/26/2020
�Ic (-�
Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date
DocuSigned by:
Mark Brant) y frM}11 PWR/FRO WQ/910-433-3300 Ext.727/ 2/26/2020
—bob-I H`JUUIUbL465 —
EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete.
Page#

NPDES yr/mo/day Inspection Type
NCO043176 I11 121 20/01/27 117 18 ISI
Comments:
(Cont.) 1
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
• The facility was neat and clean during the inspection.
• Sampling and laboratory records were organized and well kept.
• Leaks in the air distribution system were noted during the inspection. Upgrades to the air distribution
system are scheduled to begin in the near future.
• During the inspection, the facility experienced a foaming event at the plant's headworks. An
investigation by the facility indicated the foam likely originated from cleaning solution that was dumped
into the sanitary sewer.
• As part of the inspection, effluent samples were collected and sent to NC Division of Water
Resources Laboratory for testing. Results for these samples are listed below:
Parameter:
Coliform, MF Fecal*
Result: 34 CFU/100ml MDL: 1 CFU/100ml
* Fecal coliform sample was analyzed outside of hold time.
Ammonia as N (NH3-N)
Result: 0.74 mg/L as N MDL: 0.02 mg/L as N
Nitrate -Nitrite as N (NO3 + NO2-N)
Result: 1.3 mg/L as N MDL: 0.02 mg/L as N
Total Kjeldahl Nitrogen as N (TKN)
Result: 2.0 mg/L as N MDL: 0.02 mg/L as N
Total Phosphorus as P (TP)
Resulst: 0.39 mg/L as P MDL: 0.02 mg/L as P
Total Suspended Solids
Result: 6.8 mg/L MDL: 6.2 mg/L
Page# 2

Permit: NCO043176
Inspection Date: 01/27/2020
Owner - Facility: Dunn WWTP
Inspection Type: Compliance Sampling
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: Plant uses MLSS, PH, DO, and sludge fudge as process controls.
Permit
(If the present permit expires in 6 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?
Yes No NA NE
■
❑
❑
❑
■
❑
❑
❑
Yes No NA NE
❑ ❑ ■ ❑
• ❑ ❑ ❑
• ❑ ❑ ❑
• ❑ ❑ ❑
• ❑ ❑ ❑
Comment: Facilitv is ODeratina under new Dermit. which is effective from 4/1/2019 to 9/23/2023. Plant is
currently under a special permit condition, which requires nutrient sampling as part of the
Cape Fear River Basin Nutrient Monitoring Reopener. Nutrient sampling will last from April,
2019 to December, 2020. Plant is also under a special order requiring monitoring for Bis (2-
Ethvlhexvl)pthalate. Monitoring for this compound may be removed after 12 consecutive
non -detects. Plant has collected six Bis (2- Ethyl hexvl)pthalate samples to date.
Bar Screens
Yes No NA NE
Type of bar screen
a.Manual
❑
b.Mechanical
Are the bars adequately screening debris?
0
❑
❑
❑
Is the screen free of excessive debris?
0
❑
❑
❑
Is disposal of screening in compliance?
0
❑
❑
❑
Is the unit in good condition?
0
❑
❑
❑
Comment:
Grit Removal
Yes No NA NE
Type of grit removal
a.Manual
❑
b.Mechanical
Is the grit free of excessive organic matter?
❑
❑
❑
Is the grit free of excessive odor?
0
❑
❑
❑
# Is disposal of grit in compliance?
0
❑
❑
❑
Page# 3

Permit: NC0043176 Owner - Facility: Dunn WWTP
Inspection Date: 01/27/2020 Inspection Type: Compliance Sampling
Grit Removal Yes No NA NE
Comment:
Secondary Clarifier
Yes No NA NE
Is the clarifier free of black and odorous wastewater?
0
❑
❑
❑
Is the site free of excessive buildup of solids in center well of circular clarifier?
0
❑
❑
❑
Are weirs level?
0
❑
❑
❑
Is the site free of weir blockage?
0
❑
❑
❑
Is the site free of evidence of short-circuiting?
0
❑
❑
❑
Is scum removal adequate?
0
❑
❑
❑
Is the site free of excessive floating sludge?
0
❑
❑
❑
Is the drive unit operational?
0
❑
❑
❑
Is the return rate acceptable (low turbulence)?
0
❑
❑
❑
Is the overflow clear of excessive solids/pin floc?
0
❑
❑
❑
Is the sludge blanket level acceptable? (Approximately'/ of the sidewall depth)
0
❑
❑
❑
Comment: Tested sludge fudge at two of the three secondary clarifiers. Sludge fudge levels were 2 ft
and 3 ft in the clarifiers tested.
Pump Station - Effluent
Yes No NA NE
Is the pump wet well free of bypass lines or structures?
0
❑
❑
❑
Are all pumps present?
0
❑
❑
❑
Are all pumps operable?
0
❑
❑
❑
Are float controls operable?
0
❑
❑
❑
Is SCADA telemetry available and operational?
0
❑
❑
❑
Is audible and visual alarm available and operational?
❑
❑
❑
Comment: WWTP reports that they test alarms once per month.
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?
0
❑
❑
❑
Are all pumps present?
0
❑
❑
❑
Are all pumps operable?
0
❑
❑
❑
Are float controls operable?
0
❑
❑
❑
Is SCADA telemetry available and operational?
0
❑
❑
❑
Page# 4

Permit: NC0043176 Owner - Facility: Dunn WWTP
Inspection Date: 01/27/2020 Inspection Type: Compliance Sampling
Pump Station - Influent Yes No NA NE
Is audible and visual alarm available and operational? ❑ ❑ ❑
Comment:
Disinfection -Liquid
Yes No NA NE
Is there adequate reserve supply of disinfectant?
0
❑
❑
❑
(Sodium Hypochlorite) Is pump feed system operational?
0
❑
❑
❑
Is bulk storage tank containment area adequate? (free of leaks/open drains)
0
❑
❑
❑
Is the level of chlorine residual acceptable?
❑
❑
❑
Is the contact chamber free of growth, or sludge buildup?
0
❑
❑
❑
Is there chlorine residual prior to de -chlorination?
❑
❑
❑
Comment:
Standby Power
Yes No NA NE
Is automatically activated standby power available?
0
❑
❑
❑
Is the generator tested by interrupting primary power source?
0
❑
❑
❑
Is the generator tested under load?
0
❑
❑
❑
Was generator tested & operational during the inspection?
❑
❑
❑
Do the generator(s) have adequate capacity to operate the entire wastewater site?
0
❑
❑
❑
Is there an emergency agreement with a fuel vendor for extended run on back-up power?
❑
❑
❑
Is the generator fuel level monitored?
0
❑
❑
❑
Comment: Back-up power is tested every Monday. Plant documents testing and maintenance of
back-up power supply.
De -chlorination
Yes No NA NE
Type of system ?
Liquid
Is the feed ratio proportional to chlorine amount (1 to 1)?
❑ ❑
❑
Is storage appropriate for cylinders?
0 ❑
❑
❑
# Is de -chlorination substance stored away from chlorine containers?
0 ❑
❑
❑
Comment:
Are the tablets the proper size and type? ❑ ❑ 0 ❑
Are tablet de -chlorinators operational? ❑ ❑ 0 ❑
Number of tubes in use?
Comment:
Page# 5

Permit: NCO043176
Inspection Date: 01/27/2020
Aeration Basins
Mode of operation
Type of aeration system
Is the basin free of dead spots?
Are surface aerators and mixers operational?
Are the diffusers operational?
Is the foam the proper color for the treatment process?
Does the foam cover less than 25% of the basin's surface?
Is the DO level acceptable?
Is the DO level acceptable?(1.0 to 3.0 mg/1)
Owner - Facility: Dunn WWTP
Inspection Type: Compliance Sampling
Yes No NA NE
Ext. Air
Diffused
■
❑
❑
❑
❑
❑
■
❑
•
❑
❑
❑
•
❑
❑
❑
■
❑
❑
❑
■
❑
❑
❑
■
❑
❑
❑
Comment: Air lines leading to the aeration basin have leaks. Operator reports that the aeration basin
experiences variations in D.O. levels with one side consistently being higher than the other.
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)?
Comment: Growth was observed inside of the tubing leading to the composite sampler.
Influent Sampling
# Is composite sampling flow proportional?
Is sample collected above side streams?
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 sampling performed according to the permit?
Comment: Growth was observed inside of the tubing leading to the composite sampler.
Upstream / Downstream Sampling
Yes No NA NE
•
❑
❑
❑
•
❑
❑
❑
•
❑
❑
❑
❑
■
❑
❑
•
❑
❑
❑
•
❑
❑
❑
Yes No NA NE
❑
■
❑
❑
■
❑
❑
❑
■
❑
❑
❑
❑
■
❑
❑
•
❑
❑
❑
•
❑
❑
❑
Yes No NA NE
Page# 6

Permit: NCO043176 Owner - Facility: Dunn WWTP
Inspection Date: 01/27/2020 Inspection Type: Compliance Sampling
Upstream / Downstream Sampling Yes No NA NE
Is the facility sampling performed as required by the permit (frequency, sampling type, and ❑ ❑ 0 ❑
sampling location)?
Comment: WWTP is a member of the Mid Cape Fear River Basin Association, which conducts the
plant's upstream and downstream sampling.
Laboratory
Yes No NA NE
Are field parameters performed by certified personnel or laboratory?
0
❑
❑
❑
Are all other parameters(excluding field parameters) performed by a certified lab?
M
❑
❑
❑
# Is the facility using a contract lab?
0
❑
❑
❑
# 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?
0
❑
❑
❑
Incubator (BOD) set to 20.0 degrees Celsius +/- 1.0 degrees?
❑
❑
0
❑
Comment: Plant performs fecal, NH3, and field parameters. Other parameters are sent out to contract
lab.
Flow Measurement - Effluent
Yes No NA NE
# Is flow meter used for reporting?
0
❑
❑
❑
Is flow meter calibrated annually?
0
❑
❑
❑
Is the flow meter operational?
0
❑
❑
❑
(If units are separated) Does the chart recorder match the flow meter?
❑
❑
❑
Comment: Flow meter was last calibrated on 11/30/2019.
Aerobic Digester
Yes No NA NE
Is the capacity adequate?
0
❑
❑
❑
Is the mixing adequate?
0
❑
❑
❑
Is the site free of excessive foaming in the tank?
0
❑
❑
❑
# Is the odor acceptable?
0
❑
❑
❑
# Is tankage available for properly waste sludge?
0
❑
❑
❑
Comment:
Drying Beds
Yes No NA NE
Is there adequate drying bed space?
❑
❑
0
❑
Is the sludge distribution on drying beds appropriate?
❑
❑
0
❑
Are the drying beds free of vegetation?
❑
❑
0
❑
Page# 7

Permit: NCO043176 Owner - Facility: Dunn WWTP
Inspection Date: 01/27/2020 Inspection Type: Compliance Sampling
Drying Beds
Yes No NA NE
# Is the site free of dry sludge remaining in beds?
❑
❑
0
❑
Is the site free of stockpiled sludge?
❑
❑
0
❑
Is the filtrate from sludge drying beds returned to the front of the plant?
❑
❑
0
❑
# Is the sludge disposed of through county landfill?
0
❑
❑
❑
# Is the sludge land applied?
❑
❑
0
❑
(Vacuum filters) Is polymer mixing adequate?
❑
❑
0
❑
Comment: Drying beds not currently in use.
Solids Handling Equipment
Yes No NA NE
Is the equipment operational?
0
❑
❑
❑
Is the chemical feed equipment operational?
0
❑
❑
❑
Is storage adequate?
0
❑
❑
❑
Is the site free of high level of solids in filtrate from filter presses or vacuum filters?
❑
❑
❑
Is the site free of sludge buildup on belts and/or rollers of filter press?
0
❑
❑
❑
Is the site free of excessive moisture in belt filter press sludge cake?
❑
❑
0
❑
The facility has an approved sludge management plan?
0
❑
❑
❑
Comment:
Record Keeping
Yes No NA NE
Are records kept and maintained as required by the permit?
0
❑
❑
❑
Is all required information readily available, complete and current?
0
❑
❑
❑
Are all records maintained for 3 years (lab. reg. required 5 years)?
0
❑
❑
❑
Are analytical results consistent with data reported on DMRs?
0
❑
❑
❑
Is the chain -of -custody complete?
0
❑
❑
❑
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?
Page#
8

Permit: NCO043176
Inspection Date: 01/27/2020
Record Keeping
Owner - Facility: Dunn WWTP
Inspection Type: Compliance Sampling
Yes No NA NE
Is the ORC visitation log available and current?
0
❑
❑
❑
Is the ORC certified at grade equal to or higher than the facility classification?
0
❑
❑
❑
Is the backup operator certified at one grade less or greater than the facility classification?
0
❑
❑
❑
Is a copy of the current NPDES permit available on site?
0
❑
❑
❑
Facility has copy of previous year's Annual Report on file for review?
M
❑
❑
❑
Comment: Compared analytical data to eDMR for the month of June 2019. No errors or inconsistencies
were observed.
Page# 9

Regional Inspectors' Checklist for Field Parameters
[This checklist is to be completed during regional plant inspections for Field Laboratories, denoted by certification numbers in the 5000s]
Facility Name: Dunn WWTP
Regional Plant Inspector: Kristen Slodysko
NPDES #: NC0043176
Regional Inspector Contact #: 910-433-3343
Field Lab Certification #: 115
Region: FRO
Lab Contact: Donrie Dukes
Date:1 /27/20
I. Check the parameter(s) performed at this site for reporting purposes.
® Total Residual Chlorine (TRC) ® Temperature (TEMP) ❑ Specific Conductivity (SC)
® pH ® Dissolved Oxygen (DO) ❑ Settleable Residue (SETT)
II. General Laboratory (note any exceptions in section XI)
Are instruments, meters, probes, photometric cells, etc. maintained in good condition?
®
Yes
❑
No
Are standards, reagents and consumables used within manufacturer expiration dates?
[TRC gel standard is exempt.]
® Yes ❑ No
Are the following items documented ( where applicable):
Item
TRC
pH
TEMP
DO
SC
SETT
Date of sample collection*
Y
Y
Y
Y
NA
NA
Time of sample collection*
Y
Y
Y
Y
NA
NA
Sample collector's initials or signature
Y
Y
Y
Y
NA
NA
Date of sample analysis*
Y
Y
Y
Y
NA
NA
Time of sample analysis*
Y
Y
Y
Y
NA
NA
Analyst initials or signature
Y
Y
Y
Y
NA
NA
Sample site i.e., facility name, location, ID, etc.
Y
Y
Y
Y
NA
NA
Instrument ID
Y
Y
Y
Y
NA
NA
Parameter
Y
Y
Y
Y
NA
NA
Data qualifiers, when required
NA
NA
NA
NA
NA
NA
*Date and time of sample collection and analysis may be the same for in situ or on -site measurements.
III. Total Residual Chlorine — reference method:
Total Residual Chlorine meter make and model: Hach DR4000V
Is a check standard analyzed each day of use? Circle one: gel or liquid standard Use Gel
® Yes
❑ No
What is the assigned/observed value of the daily check standard?
Is a 5-point calibration verification performed? Note date of last verification:
❑ Yes
® No
Alternatively, does the lab construct a linear regression, using 5 standards, to calculate
results? Note date of last calibration curve constructed: 1/14/19
® Yes
❑ No
True values: ® pg/L ❑ mg/L 20_ 100 _50_ _200_ 400
Obtained values: ® pg/L ❑ mg/L 21_ 105_ _53_ _ 204_ _406
What program are samples analyzed on?
Are results reported in proper units? Check one: ®p /L ❑ mg/L
® Yes
❑ No
Are results reported between the facility's permit limit and the compliance limit of 50 pg/L?
If value is less than the low standard, report as "<x", where x=low standard conc.
® Yes
❑ No
Are samples analyzed within 15 minutes of collection?
® Yes
❑ No
IV. pH — reference method:
pH meter make and model: Thermo Scientific — Orion Dual Star
Is the pH meter calibrated with at least 2 buffers per mfg's instructions each day of use?
Note buffers used: 4, 7, and 10
® Yes
❑ No
Is the pH meter calibration checked with an additional buffer each day of use?
Note check buffer used: 7
❑ Yes
❑ No
Does the check buffer read within ±0.1 S.U. of the known value?
® Yes
❑ No
Are the following items documented:
Meter calibration?
® Yes
❑ No
Check buffer reading(s)?
® Yes
❑ No
Are samples analyzed within 15 minutes of collection?
® Yes
❑ No
Are sample results reported to 0.1 pH units?
® Yes
❑ No

V. Temperature — reference method:
What instrument(s) is used to measure temperature? Check all that apply: ❑ pH meter
❑ DO meter ❑ Conductivity meter ❑ Digital thermometer ❑ Glass thermometer
Is the instrument/thermometer calibration checked at least annually against a NIST
traceable or NIST certified thermometer?
® Yes
❑ No
Are temperature corrections (even if zero) posted on the instrument/thermometer?
Temperature correction for DO is kept in a notebook.
® Yes
® No
Are samples measured in situ or on -site? [REQUIRED - there is no holding time for
temperature]
® Yes
❑ No
Are sample results reported in degrees C?
® Yes
❑ No
VI. Dissolved Oxygen — reference method:
DO meter make and model: Hach LDO HQ30d
Is the air calibration of the DO meter performed each day of use?
® Yes
❑ No
Are the following items documented:
Meter calibration?
® Yes
❑ No
Are samples analyzed within 15 minutes of collection?
® Yes
❑ No
Are results reported in mg/L?
® Yes
❑ No
VII. Conductivity — reference method: NA
Conductivity meter make and model:
Is the meter calibrated daily according to the manufacturer's instructions? Note standard
used this is generally a one -point calibration):
❑ Yes
❑ No
Is a daily check standard analyzed? Note value:
❑ Yes
❑ No
Are the following items documented:
Meter calibration?
❑ Yes
❑ No
Are samples analyzed within 28 days of collection?
❑ Yes
❑ No
Are results reported in pmhos/cm some meters display equivalent pS/cm units)?
❑ Yes
❑ No
Vill. Settleable Residue — reference method: NA
Does the laboratory have an Imhoff Cone in good condition?
❑ Yes
❑ No
Is the sample settled for 1 hour?
❑ Yes
❑ No
Is the sample agitated after 45 minutes?
❑ Yes
❑ No
Are the following items documented:
Volume of sample analyzed? Note volume analyzed:
❑
Yes
❑
No
Date and time of sample analysis (settling start time)?
❑
Yes
❑
No
Time of agitation after 45 minutes of settling?
❑
Yes
❑
No
Sample analysis completion (settling end time)?
❑
Yes
❑
No
Are samples analyzed within 48 hours of collection?
❑
Yes
❑
No
Are results reported in ml/L?
❑
Yes
❑
No
IX. Was a paper trail (comparing contract lab and on -site data to DMRs)
performed? If so, list months reviewed: June 2019
® Yes
❑ No
X. Is follow-up by the Laboratory Certification program recommended?
❑ Yes
® No
XI. Additional comments: Gel TRC standard expires 1/2020. Laboratory is due for TRC calibration.
However, construction of the new calibration curve was delayed due to the death of the facility's laboratory
technician.
Please submit a copy of this completed form to the Laboratory Certification program at:
DWR Lab Certification, Water Sciences Section, 1623 Mail Service Center, Raleigh NC, 27699-1623
Electronic copies may be emailed to linda.chavis(a-)ncdenr.gov.
Revision 09/11/2015
IDocuSigned by:
VIS1UAI S�6),SL6 2/21/2020
2C DAF4695DFF454_.