HomeMy WebLinkAboutNC0081825_Inspection_20120511NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Charles Wakild, P. E. Dee Freeman
Governor Director Secretary
May 11, 2012
Lyndell Ingram, Mayor
Town of Ansonville
Post Office Box 437
Ansonville, North Carolina 28007
Subject: Compliance Evaluation Inspection and Request for Action
Town of Ansonville Wastewater Treatment Facility
NPDES Permit Number NC0081825
Anson County
Dear Mayor Ingram:
Enclosed please find the Compliance Evaluation Inspection report for the inspection conducted
April 3 and May 4, 2012 of the Town of Ansonville (Town) Wastewater Treatment Facility
(WWTF). I would like to thank you, Sarah Burr, Utilities Director, Buddy Waddell, Operator In
Responsible Charge and Dianna McLaughlin, Town Clerk for the time taken to participate in the
inspection.
The inspection revealed that there are several items, listed below, that must be addressed.
Wastewater Treatment Facility (WWTF) Corrosion
The Town's WWTF is a partially in ground metal package type unit. During the tour of the
facility it was noted that much of the facility is showing signs of corrosion. Corrosion in metal
facilities like the Town of Ansonville WWTF is often electrochemical in nature and if left
unchecked, can destroy the structural integrity of the facility. In extreme cases can cause
structural failure.
During the inspection it was noted that several of the supporting struts or braces have corroded
completely through. It is important to know that this includes some of the structure supporting
the influent bar screen and splitter box (6 photographs attached).
Location: 225 Green Street, Suite 714, Fayetteville, North Carolina 28301-5043
Phone: 910-433-33001 FAX: 910-486-07071 Customer Service: 1-877-623-6748
Internet: www.ncwaterquality.orq
An Equal Opportunity 4 Affirmative Action Employer
NorthCarolina
Naturally
Mayor Ingram
May 11, 2012
Page 2 of 5
Further inspection revealed that the coal tar or asphalt based coating has either worn off or is
missing (photograph attached). Also noted was that some of the electrical leads that are part of
cathodic protection were missing or broken (photograph attached). Typically these leads are
connected to a magnesium, zinc or aluminum sacrificial anode buried beside the unit to be
protected. The Town should determine if these units should be replaced as the expected life of
such devices are dependent on the soil type, metal to be protected, grounding potential and type
of wastewater. Failure of these units can cause accelerated corrosion.
Other causes of metal corrosion at WWTF is Hydrogen Sulfide (H2S). This type of corrosion can
originate in the collection systems or other non -aerated or anaerobic environments. H2S
corrosion is often observed at the headworks of a WWTF. H2S can attack not only metal but can
be a cause of concrete degradation as well.
In addition to the above chemical reactions with acids and alkalies (and other corrosive
chemicals) can cause corrosion. One major source at the end of the treatment process is chlorine.
A review of Division of Water Quality files revealed that corrosion/rust has been noted in
numerous Compliance Inspections reports -dating back to at least 2006. The Town is urged
to refer to previous reports as a review of this matter.
Please be advised that Part 2, Section C, 2. Proper Operation and Maintenance of your permit
states:
The Permittee shall at all times provide the operation and maintenance resources necessary to
operate the existing facilities at optimum efficiency. The Permittee shall at all times properly
operate and maintain all facilities and systems of treatment and control (and related
appurtenances) which are installed or used by the Permittee to achieve compliance with the
conditions of this permit. Proper operation and maintenance also includes adequate laboratory
controls and appropriate quality assurance procedures. This provision requires the Permittee to
install and operate backup or auxiliary facilities only when necessary to achieve compliance with
the conditions of the permit [40 CFR 122.41 (e)].
The Town is asked to address this item as soon as possible.
Responsibilities of An Operator in Responsible Charge (ORC)
15A NCAC 08G .0204 RESPONSIBILITIES OF AN OPERATOR IN RESPONSIBLE
CHARGE (ORC) states , in part, that an (ORC) of a water pollution control system must:
- operate and maintain the system efficiently and attempt to insure the compliance of the system
with any permit(s) issued for the system as well as any other applicable local, state, and federal
environmental permitting and regulatory requirements
- certify, by signature, as to the validity of all monitoring and reporting information performed
on the system as prescribed in any permit issued for the system and provide the owner a copy;
- document the operation, maintenance, and all visitation of the system in a daily log that must be
S
Mayor Ingram
May 11, 2012
Page 3 of 5
necessary to insure the compliance of the system with all local, state, and federal enviromnental
permitting and regulatory requirements;
The Town is asked to provide copies of the written notification by the ORC of the issues
concerning corrosion and any other need for system repairs or modifications for the Last
two years and how the Town addressed those notifications.
Effluent Disinfection
Effluent disinfection is accomplished using a tablet chlorinator. At the time of the inspection
only one of the four (4). tubes that hold the chlorine tablets had tablets present. This item was
discussed at length. The Town is urged to at all times have multiple tubes supplied with tablets. This
will help to ensure consistent chlorination and compliance with the NPDES permit limit for effluent fecal
coliform.
Effluent Discharge Pipe / Right -Of- Way
Based on discussions with Town personnel the effluent discharge pipe / right-of-way has not
been consistently inspected or maintained. Reportedly the right-of-way has only been mowed /
inspected one (1) time in the last ten (10) years. In order for the Town to meet Part 2, Section C.
2 of the Town's NPDES permit (cited above) the effluent pipe right-of-way must be inspected at
least twice (2) per year. The right-of-way must be maintained to facilitate inspection and to
provide access if maintenance work is called for. The Town is directed to complete a visual
survey of the entire effluent right-of-way by June 15, 2012. If the Town discovers that access is
limited or prevented for any reason you are asked to notify this office immediately.
You are asked to include a narrative of the findings of the inspection in the response called for
below. If the right-of-way requires mowing/ tree removal you may provide a schedule for
completing this item in your response.
Record Keeping
Please continue to document all maintenance activities at the WWTF that include but not
necessarily limited to changing/adding lubricants, changing/cleaning filters, replacing belts,
preventative maintenance and testing of standby generator, ORC/Back-up ORC visitation and
process control activities.
Effluent Monitoring and Reporting
A number of the parameters outlined in the "Effluent Limitation and Monitoring Requirements"
section of the Town's NPDES permit are measured by Town staff, Ms. Diane McLaughlin. As
part of the inspection Ms. McLaughlin was asked about calibration of equipment used to
measure pH, conductivity, chlorine and temperature. Based on the discussion with Ms.
McLaughlin there may be a misunderstanding of proper sampling, holding time, testing and
calibration procedures for the parameters noted as "Grab Sample" in the permit. In an attempt to
Mayor Ingram
May 11,2012
Page 4 of 5
assist the Town Ms. Tonja Springer of the DWQ Laboratory Section has been contacted to
provide assistance for the Town.
Ms. Springer has been asked to provide "Hands On" training for Town staff. The goal of the
technical assistance is to ensure that proper techniques are used to test and report the data
required by the permit. Attached please find a copy of Quality Assurance Policies for Field
Laboratories, Technical Assistance Information for Quality Assurance, Field Analysis of pH,
Conductivity, Dissolved Oxygen, Settleable Solids, Temperature, Total Residual Chlorine and
example calibration log. This checklist may be used to help the Town record proper calibration
data and to prepare for the upcoming visit by the DWQ Laboratory Section and this office. Also
the Town may visit the DWQ Laboratory Section web site @ http://www.dwglab.org/ for
additional information.
Safety
During the inspection of the blower room it was noted that the safety guard over the drive unit of
the blowers had been removed. It is strongly suggested that safety guards be replaced
immediately (if not already replaced). The guards should be replaced immediately after the units
are serviced or repaired. This is important as the units actuate without warning and can cause
severe injury. Photograph attached.
As noted previously several of the structural supports have corroded to the point of failure.
Please note that bracing supporting the "catwalk" on the. influent end of the facility have
corroded and maybe unsafe. Photograph attached.
Repair, Upgrade and/or Consideration of Regionalization
During my visit with you and your staff on May 4, 2012 we discussed the Town seeking funds to
investigate repair options or seek regionalization by connecting to the Anson County Regional
Wastewater Facility. The Fayetteville regional office has a copy of a resolution by the Town
Board dated January 9, 2012 , attached, but it is unclear if the Town is actually pursuing
regionalization.
Please note that the "E" in the NPDES program (National Pollutant Discharge Elimination
System) stands for Elimination. This office has and continues to support the elimination of
point source discharges by either connecting to regional systems such as the Anson County
Regional facility or seeking other nondischarge options.
You are asked to include in your response to this letter whether or not the Town is considering
the regionalization option or planning repairs/upgrades.
Please refer to the attached report for other comments and observations.
In closing the Town is asked to develop and submit a written Plan -of -Action (POA) to address
the items noted above by June 22, 2012. At a minimum the POA should contain how long each
Mayor Ingram
May 11, 2012
Page 5 of 5
item has been ongoing, provide a schedule or time frame to resolve each item, who conducted
the evaluation that is the basis for the action planned and how the action will be funded. Please
note that many items related to.wastewater treatment facilities repair, replacement or
modification should be reviewed and developed either by or under the supervision of a North
Carolina registered Professional Engineer.
If you have questions, comments, or would like further assistance, please do not hesitate to
contact me at (910) 433-3300.
PER/pr
Sincerely,
Paul E. Rawls
Environmental Program Consultant
r
Enclosures: Photographs (6), Resolution dated 1/9/2012, Technical Assistance/Quality
Assurance Information, Inspection Report
cc: Sarah Burr, Town of Ansonville
Buddy Waddell, Operator In Responsible Charge, Town of Ansonville
Dianna McLaughlin, Town Clerk, Town of Ansonville
DWQ Central Files
• . United States Environmental Protection Agency
EPA Washington, D.C. 20460
Water Cnmpliant:e Insper.tinn 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 HI I 2 1 51 31 NC0081825 111 121 12/05/04 • 117
Type Inspector Fac Type
18I C I 19I S I 201
I I I I I I I I I I I I I I I I66
Remarks
211 I I 1 I' I I I I I I I I I I I I I I I I I I I- I I I I I I I
Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA Reserved----=--- ------- --
67I 169 701 21 711 I 72I N I 731 11 74 751 III 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)
Ansonville WWTP
NCSR 1627
Ansonville NC 28007
Entry Time/Date
09:30 AM 12/05/04
Permit Effective Date
09/12/01
Exit Time/Date
04:00 PM 12/05/04
Permit Expiration Date
14/01/31
Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) 1
///
William H. Waddell/ORC/704-695-6379/
Other Facility Data
Name, Address of Responsible OfficialfTitle/Phone and Fax Number
Contacted,
Daniel Lane Wilson,PO Box 106 Ansonville NC 280070106//704-826-8404/ 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
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
Paul E Is // Division of Water Quality//94.9-7-33-6983/
Date /
5/ ///20I'Z
`
\{{{JL✓✓✓ cite 433 37N
Signature of Management Q A Reviewer �, Agency/Office/Phone and Fax Numbers Dater
Belinda S Henson .&? `'60,0 FRO WQ//910-433-3300 Ext.726/ , /'j f i ,
EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete.
Page # 1
NPDES yr/mo/day Inspection Type
31 NC0081825 111 121 12/05/04 17 181
CI
(cont.) 1
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
Mayor Ingram, Sarah Burr, Utilities Director, Buddy Waddell, Operator In Responsible Charge and Dianna
McLaughlin, Town Clerk participated in the inspection.
The inspection revealed that there are several items, listed below,,that must be addressed.
Wastewater Treatment Facility (WWTF) Corrosion
The Town's WWTF is a partially ground metal package type unit. During the tour of the facility it was noted
that much of the facility is showing signs of corrosion. Corrosion in metal facilities like the Town of
Ansonville WWTF is often electrochemical in nature and if left unchecked, can destroy the structural
integrity of the facility. In extreme cases can cause structural failure.
During the inspection it was noted that several of the supporting struts or braces have corroded completely
through. It is important to know that this includes some of the structure supporting the influent bar screen
and splitter box (6 photographs attached).
Further inspection revealed that the coal tar or asphalt based coating has either worn -off or is missing
(photograph attached). Also noted was that some of the electrical leads that are part of cathodic protection
were missing or broken (photograph attached). Typically these leads are connected to a magnesium, zinc or
aluminum sacrificial anode buried beside the unit to be protected. The Town should determine if these units
should be replaced as the expected life of such devices are dependent on the•soil type, metal to be
protected, grounding potential and type of wastewater. Failure of these units can cause accelerated
corrosion.
Other causes of metal corrosion at WWTF is Hydrogen Sulfide (H2S). This type of corrosion can originate in
the collection systems or other non -aerated or anaerobic environments. H2S corrosion is often observed at
the headworks of a WWTF. H2S can attack not only metal but can be a cause of concrete degradation as
well.
In addition to the above chemical reactions with acids and alkalies (and other corrosive chemicals) can
cause corrosion. One major source at the end of the treatment process is chlorine.
A review of Division of Water Quality files revealed that corrosion/rust has been noted in numerous
Compliance Inspections reports dating back to at least 2006. The Town is urged to refer to previous reports
as a review of this matter.
Please be advised that Part 2, Section C, 2. Proper Operation and Maintenance of your permit states:
The Permittee shall at all times provide the operation and maintenance resources necessary to operate the
existing facilities at optimum efficiency. The Permittee shall at all times properly operate and maintain all
facilities and systems of treatment and control (and related appurtenances) which are installed or used by
the Permittee to achieve compliance with the conditions of this permit. Proper operation and maintenance
Page # 2
Permit: NC0081825 Owner - Facility: Ansonville WWTP
Inspection Date: 05/04/2012 Inspection Type: Compliance Evaluation
also includes adequate laboratory controls and appropriate quality assurance procedures. This provision
requires the Permittee to install and operate backup or auxiliary facilities only when necessary to achieve
compliance with the conditions of the permit [40 CFR 122.41 (e)].
The Town is asked to address this item as soon as possible.
Responsibilities of An Operator in Responsible Charge (ORC)
15A NCAC 08G .0204 RESPONSIBILITIES OF AN OPERATOR IN RESPONSIBLE CHARGE (ORC)
states , in part, that an (ORC) of a water pollution control system must:
- operate and maintain the system efficiently and attempt to insure the compliance of the system
with any permit(s) issued for the system as well as any other applicable local, state, and federal
environmental permitting and regulatory requirements
- certify, by signature, as to the validity of all monitoring and reporting information performed
on the system as prescribed in any permit issued for the system and provide the owner a copy;
- document the operation, maintenance, and all visitation of the system in a daily log that must be
maintained at the system;
- notify the owner, in writing, of the need for any system repairs and modifications that may be
necessary to insure the compliance of the system with all local, state, and federal environmental
permitting and regulatory requirements;
The Town is asked to provide copies of the written notification by the ORC of the issues concerning
corrosion and any other need for system repairs or modifications for the last two years and how the Town
addressed those notifications.
Effluent Disinfection
Effluent disinfection is accomplished using a tablet chlorinator. At the time of the inspection only one of the
four (4) tubes that hold the chlorine tablets had tablets present. This item was discussed at length. The
Town is urged to at all times have multiple tubes supplied with tablets. This will help to ensure consistent
chlorination and compliance with the NPDES permit limit for effluent fecal coliform.
Effluent Discharge Pipe / Right -Of- Way
Based on discussions with Town personnel the effluent discharge pipe / right-of-way has not been
consistently inspected or maintained. Reportedly the right-of-way has only been mowed / inspected one (1)
time in the last ten (10) years. In order for the Town to meet Part 2, Section C. 2 of the Town's NPDES
permit (cited above) the effluent pipe right-of-way must be inspected at least twice (2) per year. The
right-of-way must be maintained to facilitate inspection and to provide access if maintenance work is called
for. The Town is directed to complete a visual survey of the entire effluent right-of-way by June 15, 2012.'If
the Town discovers that access is limited or prevented for any reason you are asked to notify this office
immediately.
Page # 3
Permit: NC0081825 Owner - Facility: .Ansonville WWTP
Inspection Date: 05/04/2012 Inspection Type: Compliance Evaluation
You are asked to include a narrative of the findings of the inspection in the response called for below. If the
right-of-way requires mowing/ tree removal you may provide a schedule for completing this item in your
response.
Record Keeping
Please continue to document all maintenance activities at the WWTF that include but not necessarily limited
to changing/adding lubricants, changing/cleaning filters, replacing belts, preventative maintenance and
testing of standby generator, ORC/Back-up ORC visitation and process control activities.
Effluent Monitoring and Reporting
A number of the parameters outlined in the "Effluent Limitation and Monitoring Requirements" section of the
Town's NPDES permit are measured by Town staff, Ms. Diane McLaughlin. As part of the inspection Ms.
McLaughlin was asked about calibration of equipment used to measure pH, conductivity, chlorine and
temperature. Based on the discussion with Ms. McLaughlin there may be a misunderstanding of proper
sampling, holding time, testing and calibration procedures for the parameters noted as "Grab Sample" in the
permit. In an attempt to assist the Town Ms. Tonja Springer of the DWQ Laboratory Section has been
contacted to provide assistance for the Town.
Ms. Springer has been asked to provide "Hands On" training for Town staff. The goal of the technical
assistance is to ensure that proper techniques are used to test and report the data required by the permit.
Attached please find a copy of Quality Assurance Policies for Field Laboratories, Technical Assistance
Information for Quality Assurance, Field Analysis of pH, Conductivity, Dissolved Oxygen, Settleable Solids,
Temperature, Total Residual Chlorine and example calibration log. This checklist may be used to help the
Town record proper calibration data and to prepare for the upcoming visit by the DWQ Laboratory Section
and this office. Also the Town may visit the DWQ Laboratory Section web site @ http://www.dwglab.org/ for
additional information.
Safety
During the inspection of the blower room it was noted that the safety guard over the drive unit of the blowers
had been removed. It is strongly suggested that safety guards be replaced immediately (if not already
replaced). The guards should be replaced immediately after the units are serviced or repaired. This is
important as the units actuate without warning and can cause severe injury. Photograph attached.
As noted previously several of the structural supports have corroded to the point of failure. Please note that
bracing supporting the "catwalk" on the influent end of the facility have corroded and may be unsafe.
Photograph attached.
Repair, Upgrade and/or Consideration of Regionalization
During the inspection it was learned that the Town is seeking funds to investigate repair options or seek
regionalization by connecting to the Anson County Regional Wastewater Facility. The Fayetteville regional
office has a copy of a resolution by the Town Board dated January 9, 2012 , attached, but it is unclear if the
Page # 4
Permit: NC0081825 Owner - Facility: Ansonville WWTP
Inspection Date: 05/04/2012 Inspection Type: Compliance Evaluation
Town is actually pursuing regionalization.
Please note that the "E" in the NPDES program (National Pollutant Discharge Elimination System) stands
for Elimination. This office has and continues to support the elimination of point source discharges by either
connecting to regional systems such as the Anson County Regional facility or seeking other nondischarge
options.
The Town is asked to include in the response to this report whether or not the Town is considering the
regionalization option or planning repairs/upgrades.
Town is asked to develop and submit a written Plan -of -Action (POA) to address the items noted above by
June 22, 2012. At a minimum the POA should contain how long each item has been ongoing, provide a
schedule or time frame to resolve each item, who conducted the evaluation that is the basis'for the action
planned and how the action will be funded. Please note that many items related to wastewater treatment
facilities repair, replacement or modification should be reviewed and developed either by or under the
supervision of a North Carolina registered Professional Engineer.
If you have questions, comments, or would like further assistance, please do not hesitate to contact Paul
E. Rawls, Environmental Program Consultant at 910.433.3300.
Page # 5
Permit: NC0081825 Owner - Facility: Ansonville WWTP
Inspection Date: 05/04/2012 Inspection Type: Compliance Evaluation
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: Settleometer is used 2/week
Solids level is measured with sludge judge
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?
Comment: WWTF grounds were neat and well kept.
Pump Station - Effluent
Is the pump wet well free of bypass lines or structures?
• 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: See Summary Section for comments relating to effluent pipe and R/W.
Bar Screens
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: Bar Screen is showing signs corrosion. See cover letter and Summary
Section of this report relating to corrosion.
Secondary Clarifier
Yes No NA NE
■ ❑ ❑ ❑
■ nnn
Yes No NA NE
nn■❑
■ nnn
nn■n
■ nnn
■ nnn
Yes No NA NE
■ nnn
■ nnn
■ nnn
■ nnn
■ nnn
■ nnn
Yes No NA NE
■
n
■ nnn
■ ❑ ❑ ❑
■ nnn
n■nn
Yes No NA NE
Page #. 6
Permit: NC0081825 Owner - Facility: Ansonville WWTP
Inspection Date: 05/04/2012 Inspection Type: Compliance Evaluation
Secondary Clarifier
Is the clarifier free of black and odorous wastewater?
Is the site free of excessive buildup of solids in center well of circular clarifier?
Are weirs level?
Is the site free of weir blockage?
Is the site free of evidence of short-circuiting?
Is scum removal adequate?
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?
Is the sludge blanket level acceptable? (Approximately'/ of the sidewall depth)
Comment: Effluent was generally clear at the time if the inspection.
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/I)
Comment: Diffusers appear to be working well but should be periodically cleaned to
ensure even distribution of air.
De -chlorination
Type of system ?
Is the feed ratio proportional to chlorine amount (1 to 1)?
Is storage appropriate for cylinders?
# Is de -chlorination substance stored away from chlorine containers?
Are the tablets the proper size and type?
Yes No NA NE
■ ❑ ❑ ❑
nn■n
■ nnn
■ nnn
■ nnn
■ nnn
■ nnn
n n■n
■ nnn
■ nnn
■ nnn
Yes No NA NE
Diffused %
■ nnn
n ❑■❑
■ nnn
■ nnn
■ nnn
n nn■
n nn■
Yes No NA NE
Tablet
n n■n
n n■n
■ nnn
■ ❑nn.
Page # 7
Permit: NC0081825 Owner - Facility: Ansonville WWTP
Inspection Date: 05/04/2012 Inspection Type: Compliance Evaluation
De -chlorination
Comment: Tablet chlorination and dechlorination.
Are tablet de -chlorinators operational?
Number of tubes in use?
Comment: Unit was in use and free of solids.
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: See comment concerning field parameters in summary section
Portable composite sampler.
Sample container is "iced" during sampling.
Disinfection -Tablet
Are tablet chlorinators operational?
Are the tablets the proper size and type?
Number of tubes in use?
Is the level of chlorine residual acceptable?
Is the contact chamber free of growth, or sludge buildup?
Is there chlorine residual ,prior to de -chlorination?
Comment: See comment concerning chlorination in summary section of this report.
Yes No NA NE
■ nnn
3
Yes No NA NE
n nn.
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n nn■
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Yes No NA NE
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Page # 8
Awl --rtint'
Box .28692
Charlotte, N.C.
. (704) 547 - 0193
ANSONViLLE
WASTEWATER
TREATMENT PLANT
1681 Pinkstou River Road
NPDES Perrit# C81825
24 Hour Emergency Contact #
911 OR 704-826rt8404
Ansonville Wastewater Treatment Facility
May 4, 2012
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Ansonville Wastewater Treatment Facility
May 4, 2012
Broken Cathodic Protection Wire
Ansonville Wastewater Treatment Facility
May 4, 2012
Missing Guard, Blower Room
Ansonville Wastewater Treatment Facility
May 4, 2012
Corroded / Broken Support
Ansonville Wastewater Treatment Facility
May 4, 2012
Corroded / Broken Support
Ansonville Wastewater Treatment Facility
May 4, 2012
04i'141'2012 10:11 7040258404 rOWN OF MSLhIVIEEE PAGE8''r'0'-''
CLEAN WATER MANAGEMENT TRUST FUND
Authorizing Resolution by the Board of Commissioners
of the Town of Ansonville
WHEREAS, the Town of Ansonville is hereby applying to the North Carolina Clean Water
Management Trust Fund ("the Fund") for grant funds for the project described as the Wastewater
Treatment Plant. Assessment Planning Project; and
WHEREAS, if the North Carolina Clean Water' Management Trust Fund approves funding of the
project as described in this grant application, the Fund will prepare a Grant Agreement for
execution by the Town of Ansonville, and
WHEREAS, the Grant Agreement will specify the terms and conditions under which the Fund will
provide the grant funding; and
WHEREAS, the Grant Agreement will require the Town of Ansonville to perform certain functions
and obligations in order to carry out the work described in this grant application.
NOW, THEREFORE, BE IT RESOLVED;
That the Board of Commissioners for the Town of Ansonville assures the North Carolina Clean
Water Management Trust Fund that it understands the functions and obligations to which the
Town of Ansonville is committing itself in order to carry out the work described in this grant
application, and further agrees that the Town of Ansonville will proceed with diligence to perform
those functions and obligations to accomplish the work described in this grant application.
That Lyndell P. Ingram, Sr., Mayor, or designee has authority to sign all application and contract
documents required to carry out the obligations of Board of Commissioners.
Adopted this 9th day of January, 2012, at Ansonville, North Carolina.
dell Ingram, Sr., May
Town of Ansonville
ATTEST:
Dianna cLaughlin, Clerk
Town of Ansonville
Quality Assurance Policies for Field Laboratories (NC WW/GW LC Policy 05/31/2011)
The following policies are required quality assurance practices. These policies, issued by the North Carolina
Wastewater/Groundwater Laboratory Certification (NC WW/GW LC) program, apply to analyses performed by field
laboratories and are intended to insure data produced are accurate, reliable and documented appropriately. They are
meant to clarify existing legislative rules or to'provide guidance where a legislative rule does not exist.
Mechanical Volumetric Liquid -Dispensing Devices Calibration
Mechanical volumetric liquid -dispensing devices (e.g., fixed and adjustable auto-pipettors, bottle -top dispensers, etc.)
must be calibrated at least every twelve months and documented. Each liquid -dispensing device must meet. the
manufacturer's statement of accuracy. For variable volume devices used at more than one setting, check the accuracy at
the maximum, middle and minimum values. Testing at more than three volumes is optional. When a device capable of
variable settings is dedicated to dispense a single specific volume, calibration is required at that setting only. Ref: North
Carolina Wastewater/Groundwater Laboratory Certification Policy.
Error Corrections
All documentation errors must be corrected by drawing a single line through the error so that the original entry remains
legible. Entries shall not be obliterated by erasures or markings. Wite-Out®, correction tape or similar products designed
to obliterate documentation are not to be used. Write the correction adjacent to the error. The correction must be
initialed by the responsible individual and the date of change documented. All data and log entries must be written in
indelible ink. Pencil entries are not acceptable. Ref: North Carolina Wastewater/Groundwater Laboratory Certification
Policy.
Chemical, Reagent and Consumable Expiration Dates
Adherence to manufacturer expiration dates is required. Chemicals, reagents, standards, consumables exceeding the
expiration date can no longer be considered reliable. If the expiration is only listed as a month and year (with no specific
day of the month), the last day of the month will be considered the actual date of expiration. Monitor materials for
changes in appearance or consistency. Any changes may indicate potential contamination and the item should be
discarded even if the expiration date is not exceeded.,If no expiration date is given, the laboratory must have a policy for
assigning an expiration date. If no date received or expiration date can be determined, the item should be discarded.
Ref: North Carolina Wastewater/Groundwater Laboratory Certification Policy based upon Standard Methods, 18th Edition
- Method 1070 C. (3) (c).
Traceability of Chemicals, Reagents, Standards and Consumables
All chemicals, reagents, standards and consumables used by the laboratory must have the following information
documented: Date Received, Date Opened (in use), Vendor, Lot Number, and Expiration Date. A system (e.g., traceable
identifiers) must be in place that links standard/reagent preparation information to analytical batches in which the
solutions are used. Documentation of solution preparation must include the analyst's initials, date of preparation, the
volume or weight of standard(s) used, the solvent and final volume of the solution. This information as well as the
Quality Assurance Policies for Field Laboratories
Page 2 of 2
vendor and/or manufacturer, lot number, and expiration date must be retained for chemicals, reagents, standards and
consumables used for a period of five years. Consumable materials such as pH buffers and lots of pre -made standards
are included in this requirement. Ref: North Carolina Wastewater/Groundwater Laboratory Certification Policy.
Qualifying Data
When quality control (QC) failures occur, the laboratory must attempt to determine the source of the problem and must
apply corrective action. Part of the corrective action is notification to the end user. If data qualifiers are used to qualify
samples not meeting QC requirements, the data may not be useable for the intended purposes. It is the responsibility of
the laboratory to provide the client or end -user of the data with sufficient information to determine the usability of the
qualified data.
Where applicable, a notation must be made on the Discharge Monitoring Report (DMR) form, in the comment section,
when any required sample quality control does not meet specified criteria and another sample cannot be obtained. Ref:
North Carolina Wastewater/Groundwater Laboratory Certification Policy based upon Standard Methods, 20th Edition —
Method1020 B. (14).
Analyzing Proficiency Testing Samples in the Same Manner as Environmental Samples
The analysis of proficiency testing (PT) samples is designed to evaluate the entire process used to routinely report
environmental analytical results. Therefore, PT samples must be analyzed and the process documented in the same
manner as environmental samples. Ref: North Carolina Wastewater/Groundwater Laboratory Certification Policy.
For example, for colorimetric (DPD) procedures, Total Residual Chlorine (TRC) PT samples must be analyzed on the same
spectrophotometric program (i.e., the sample wavelength) using the same procedure that is used for sample analysis. There
are two options for achieving this:
1. If a regular level TRC performance evaluation sample is analyzed, it must be diluted to the verified range of the low
level curve. The reported result must then be calculated using the dilution factor and the TRC value obtained.
2. Since the dilution factor in option 1 may introduce error, it is recommended that the low level TRC sample be
analyzed. These are currently available from many approved vendors. This sample should be within the range of
your verified curve on the low level program.
Housekeeping
A best effort must be made to perform analyses in a manner where possible sources of contamination or error will not be
introduced. Ref: North Carolina Wastewater/Groundwater Laboratory Certification Policy. For example:
• Dirty interior work area.
• Weather conditions such as rain.
• Unclean cuvettes.
TECHNICAL ASSISTANCE FOR FIELD ANALYSIS OF pH
This document is intended to provide technical assistance and guidance for the measurement of pH. This is not meant to be a
substitute for the method, but is offered as a guide to the method.
HOLDING TIME:
• Samples must be analyzed within 15 minutes of collection.
METER CALIBRATION:
• The meter must be calibrated prior to the analysis of samples.
• If compliance samples are analyzed throughout the day, a post calibration check (e.g., 7 buffer) must be analyzed mid-
day and at the end of the run (i.e., roughly every 4 hours based on an eight hour day).
• For routine work, use a pH meter accurate and reproducible to 0.1 pH unit with a range of 0 to 14, equipped with a
temperature compensation device. Follow all manufacturers' recommendations for the calibration of the meter each
analysis day. The meter must be calibrated with at least two buffers. In addition to the calibration standards, the meter
must be verified with a third calibration standard. The calibration and check standard buffer must bracket the range of the
samples being analyzed.
• The check standard buffer must read within a range of ± 0.1 pH units to be acceptable.
General Information:
• Samples shall be gently stirred during measurement.
• • The electrode must be rinsed and blotted dry between measurements.
• All thermometers and temperature measuring devices must be checked every 12 months against a NIST certified or
NIST traceable thermometer and the process documented. To check a thermometer or the temperature sensor of a
meter, read the temperature of the thermometer/meter against a NIST certified or NIST traceable thermometer and record
the two temperatures. The thermometer/meter readings must be less than or equal to 1°C from the NIST certified or NIST
traceable thermometer reading. The documentation must include the serial number of the NIST certified thermometer or
NIST traceable thermometer that was used in the comparison. Also document any correction that applies on both the
thermometer/meter and on a separate sheet to be filed. (NOTE: Other certified laboratories may provide assistance in
meeting this requirement.)
DOCUMENTATION:
The following must be documented whenever sample analysis is performed.
1. Time and date of sample collection
2. Time of calibration
3. Time and date of analysis (to verify 15 minute holding time is met)
4. Collector's/analyst's name
5. Value of buffers used for calibration
6. Value obtained for check buffer
7. Sample location/site
8. Post calibration checks (if applicable)
9. Report all, data values to the nearest 0.1 pH unit.
10. Traceability for chemicals, reagents, standards and consumables
Ref: Standard Methods 4500-H+ B - 2000
Rev. 04/2012
TECHNICAL ASSISTANCE FOR FIELD ANALYSIS OF CONDUCTIVITY SAMPLES
This document is intended to provide technical assistance and guidance for the measurement of Conductivity. This
is not meant to be a substitute for the method, but is offered as a guide to the method.
Holding Time:
• Samples must be analyzed within 28 days of collection. If samples are not analyzed immediately, all
samples are to be stored at above freezing to 6°C.
Conductivity:
• In water analysis, the measurement is expressed in pmhos/cm. Some meters display units in µS/cm.
(1pmho/cm = 1 µS/cm)
Meters:
• For routine work, a conductivity meter must produce results that are accurate and reproducible. Most
meters automatically adjust for temperature. Meters that adjust for temperature will automatically adjust for
the cell constant.
If the meter does not adjust for the cell constant, a cell constant must be calculated and factored into the
final result daily.
Probes:
• Conductivity probes must be constructed from durable common metals (i.e., stainless steel among others)
for continuous and field studies. The electrode should be kept very clean. Make sure the electrode is
submerged for each standard and sample and that the electrode chamber contains no air or bubbles.
NOTE: If the electrode is stored dry, it should be soaked in distilled or deionized water for at least 10 minutes
before use to thoroughly wet the electrode.
Standards:
Conductivity standards may be purchased in the ranges desired, or they may be prepared using Potassium Chloride
(KCI). KCI standards can be prepared according to Table 2510:1 found on page 2-43 of Standard Methods, 18th
Edition — Method 2510 A. Standards must be clean. A portion of the standard should not be used for more than one
calibration. Discard any used standard portions.
Procedures for calibration:
1. Analyze and document the value of a daily calibration standard. It is recommended that the calibration
standard be in the range of 1413 µmhos/cm.
2. Rinse the conductivity cell with conductivity -free water between standards.
• Analyze and document a calibration verification check standard. It is recommended that this standard be at
a lower range.
• The value obtained from the calibration check standard must read within 10% of the true value of the check
standard. If the obtained value is outside of the ±10% range, corrective action must be taken.
NOTE: Conductivity samples and standards should not be diluted.
Rev. 04-2012
To verify the temperature correction or compensation:
The Automatic Temperature Compensator (ATC) must be verified by analyzing a standard at 25° C (the temperature
that conductivity values are compensated to) and a temperature(s) that bracket the temperature ranges of the
samples to be analyzed. This may require the analysis of a third temperature reading that is > 25° C. The following
must be performed on an annual (i.e., 12 month) basis:
1. Pour an adequate amount of conductivity standard into a beaker or other container and analyze at
25° C. Document the temperature and conductivity value.
2. Lower the temperature of the standard by placing the container in cool water or a refrigerator to less
than the lowest anticipated sample temperature and analyze. Document the temperature and
conductivity value.
3. If samples greater than 25° C are to be analyzed, perform the following additional step: Place the
container in warm water or a water bath and raise the temperature above 25° C to greater than the
highest anticipated sample temperature and analyze. Document the temperature and conductivity
value.
As the temperature increases or decreases, the value of the conductivity standard must be within ± 10% of
the true value of the standard.
Comment: Anticipated temperatures can be obtained from a review of the Discharge Monitoring Reports
(DMRs) from the peak summer and winter months. Historical data should provide a reasonably accurate
estimation of ranges that will bracket the expected sample temperatures.
Ref: North Carolina Wastewater/Groundwater Laboratory Certification (NC WW/GW LC) Policy Statement
February 2006.
Other certified laboratories may provide assistance in meeting this requirement.
Documentation requirements:
The following criteria must be documented whenever sample analysis is performed.
1. Date and time of sample collection.
2. Date and time of sample analysis.
3. Collector/analyst's name.
4. Sample Site/ Sample identification.
5. Value of standard used for calibration.
6. Instrument calibration time.,
7. Concentration and obtained value of the check standard.
8. Reported values for all samples in pmhos/cm at 25° C or corrected to 25° C.
9. Traceability for chemicals, reagents, standards and consumables
Ref: Standard Methods 2510 B —1997
Rev. 04-2012
TECHNICAL ASSISTANCE FOR FIELD ANALYSIS
OF DISSOLVED OXYGEN (DO)
This document is intended to provide technical assistance and guidance for the measurement of Dissolved Oxygen
(DO) samples. This is not meant to be a substitute for the method, but is offered as a guide to the method.
HOLDING TIME:
• Samples must be analyzed within 15 minutes (40 CFR Part 136 Table II); however, immediate analysis is
recommended due to the unstable nature of dissolved oxygen samples.
• When analyzing samples in a hazardous area (such as highway bridges, etc.), the samples should be transported
and analyzed at a safe location near the collection point.
GENERAL INFORMATION:
• Some instruments (i.e., those designated as benchtop models), are not recommended for field use. Be sure that
the DO meter used for field analysis is approved for field use.
• Movement of water across the membrane is important to good readings. Some probes come with stirrers for this
purpose. Measurements should be taken while the stirrer is in use or by swirling the DO probe in the sample flow.
METER CALIBRATION:
• The meter must be calibrated prior to analysis of, samples.
• The meter must be calibrated either by the air calibration method or according to the manufacturer's calibration
procedure.
• The laboratory must document each time that a calibration is performed. Depending upon the instrument used and
type of calibration performed, calibration documentation may be accomplished by recording elevation and
temperature or barometric pressure (in psi) or salinity or by simply recording a final reading (in mg/L) for
instruments that auto calibrate.
Note: The laboratory should use moist air for the air calibration. This is accomplished by calibrating the
electrode in an environment with a high relative humidity. Using dry air for the calibration can result in errant
readings.
• When performing analysis at multiple sampling locations, re-calibration(s) must be performed every four hours.
DOCUMENTATION:
The following criteria must be documented whenever sample analysis is performed.
1. Date and time collected
2. Date and time of analysis
3. Sample site
4. Collector's/analyst's name
5. Meter calibration and time(s) of calibration
6. All data must be labeled with the proper units of measure and reported in units of mg/L.
7. Traceability for chemicals, reagents, standards and consumables
Ref: Standard Methods 4500-0 G.- 2001
Rev. 04/2012
TECHNICAL ASSISTANCE FOR FIELD ANALYSIS OF SETTLEABLE
SOLIDS
HOLDING TIME: Samples must be analyzed within 48 hours of collection. Samples must
be stored at 4°C, if not analyzed immediately.
Collect a minimum of 1 liter of sample.
Be sure Imhoff Cone is clean and dry prior to analysis.
ANALYSIS REQUIREMENT: Pour exactly 1 liter of well mixed sample into the Imhoff
Cone and allow to settle for 45 minutes. After 45 minutes gently stir on the sides of the
cone or gently spin the cone. Allow to settle for another 15 minutes. •
Measure the volume of residue in the bottom of the cone in ml/L. Be sure to subtract
pockets of liquid from the final volume of residue reported. Results, which fall below
0.1 ml/L, must be reported as <0.1 ml/L.
DOCUMENTATION: The following criteria must be documented whenever sample
analysis is performed.
1. Time of sample collection
2. Time of analysis (to verify 48 hour holding time a is met)
3. Collector's/analyst's name
4. Sample Site/ Sample identification
5. Volume of sample analyzed
6. Analysis time (Start and end)
7.45 minute stir time
Ref: Standard Methods 2540 F - 1997.
Rev 04/2012
Rev 2006
TECHNICAL ASSISTANCE FOR FIELD ANALYSIS
OF TEMPERATURE
This document is intended to provide technical assistance and guidance for the measurement of
temperature. This is not meant to be a substitute for the method, but is offered as a guide to the method.
HOLDING TIME:
• Immediate analysis is required.
• When collecting samples in a hazardous area (such as highway bridges, etc.), measurement may be
delayed only as long as it takes to transport and analyze the samples at a safe location near the
collection point.
GENERAL INFORMATION:
• Temperature measurements must be made with a Celsius thermometer or other acceptable
temperature -measuring device. It is recommended that all glass thermometers have a metal case to
prevent breakage.
• The Conductivity, Dissolved Oxygen, or pH meter may be used to analyze and document temperature
data.
• When using glass type thermometers, the number of decimal places that the measurement is reported to
will determine the graduations required for the thermometer. Standard Methods 2550 B — 2000 states
that the thermometer should have a scale marked for every 0.1 ° C. This is required for all measurements
performed to tenth degree increments. (e.g., 24.7° C). If measurements are reported in whole numbers,
a thermometer having a scale marked for every 1° C is adequate (e.g., 22° C).
All thermometers and temperature measuring devices must be checked every 12 months against a NIST
certified or NIST traceable thermometer and the process documented. To check a thermometer or the
temperature sensor of a meter, read the temperature of the thermometer/meter against a NIST certified or
NIST traceable thermometer and record the two temperatures. The thermometer/meter readings must be
Tess than or equal to 1°C from the NIST certified or NIST traceable thermometer reading. (NC
Wastewater/Groundwater Laboratory Certification Policy). The documentation must include the serial number
of the NIST certified thermometer or NIST traceable thermometer that was used in the comparison. Also
document any correction that applies on both the thermometer/meter, and on a separate sheet to be filed.
(NOTE: Other certified laboratories may provide assistance in meeting this requirement.)
• NIST traceable thermometers used for temperature measurement must be recalibrated in accordance
with the manufacturer's recalibration date. If no recalibration date is given, the NIST traceable
thermometer must be recalibrated annually.
• NIST certified thermometers must be recalibrated, at a minimum, every five years. A new certificate must
be issued and maintained for inspection upon request. NC Wastewater/Groundwater Certification Policy
DOCUMENTATION:
The following criteria must be documented whenever sample analysis is performed.
1. Time and date of collection/analysis
2. Collector's/analyst's name
3. Collection location/site
4. All data is to be reported in °C
5. The temperature correction (even if it is zero) must be posted on the meter as well as in hard copy format
(to be retained for 5 years).
Ref: Standard Methods 2550 B - 2000.
Rev04/2012
TECHNICAL ASSISTANCE FOR FIELD ANALYSIS OF
TOTAL RESIDUAL CHLORINE
This document is intended to provide technical assistance and guidance for the measurement of Total
Residual Chlorine using the colorimetric procedure. This is not meant to be a substitute for the method, but is
offered as aiguide to the method.
Holding Time:
• Samples must be analyzed within 15 minutes of collection.
General Information:
• Color wheel visual comparison may not be used to quantitate a permit compliance value.
• If there is a limit stated on the facility permit, you must have an instrument capable of
detecting concentrations at that level.
If there is no limit stated on the facility permit, you may use a pocket colorimeter or other approved
instrument. Pocket colorimeters are generally capable of analyzing down to 100 µg/L or 0.100 mg/L. Ref:
Division of Water Quality letter dated August 14, 2001.
Instrument Calibration or Calibration Verification:
Instruments are to be calibrated or a calibration check must be performed prior to analysis of samples each
day compliance monitoring is performed. Calibration checks must be for the curve and/or program used for
sample analysis.
The concentrations of the calibration standards must bracket the concentrations of the samples analyzed.
One of the standards must have a concentration equal to or below the lower reporting concentration for Total
Residual Chlorine.
Example:
If the laboratory chooses to have a lower reporting limit of 100 pg/L for residual chlorine, you must
analyze at least 100 µg/L or lower standard and report lower concentrations as < 100 pg/L or < the
concentration of the chosen standard.
If you choose 1000 pg/L for the top of your standard curve, all samples above this limit must be diluted
and reanalyzed to fall within the range of the chosen lower standard and 1000 µg/L.
Most field photometric instruments have factory -set (i.e., stored) calibration programs, which when selected
in combination with the optimum wavelength for a particular analysis, give a direct readout in concentration.
These stored calibration programs are acceptable for quantitation, but due to possible analyst error, variation
in sample or standard preparation, variation in reagents or malfunction of the instrument, the stored
calibration must be verified with a laboratory -generated calibration at least every 12 months. The definition
of a laboratory -generated calibration; as opposed to a factory -set or stored calibration verification is as
follows:
Laboratory -generated Calibration means: A series of ,standards are analyzed by the permitted facility and the
obtained values are programmed into the instrument, computer spreadsheet, scientific calculator, or plotted
manually. Sample results are obtained by comparison to the linear regression of those values. The standard
materials used must be of an acceptable purity. Each analyst performing the test must generate an individual
calibration curve.
Factory -set or Stored Calibration verification means: An internal curve, generated by the instrument
.manufacturer, is checked (i.e., verified) using a series of known standards. The standard materials used to
verify the factory -set calibration must be of an acceptable, purity. This procedure may be performed bythe
permitted facility or may be contracted to a vendor or another laboratory. Since a single curveis always used
for sample measurement and is verified for accuracy, each analyst does not have to perform calibration
verification, this may be done per instrument.
Rev 04/2012
Calibration and Verification Options:
Option 1 — Annual Factory -set Curve Verification: Analyze a water blank to zero the instrument and then
analyze a series of five standards. The curve verification must check 5 concentrations (not counting the
blank) that bracket the range of the samples to be analyzed. This type of curve verification must be
performed at least every 12 months. The values obtained must not vary by more than 10% of the known
value for standard concentrations greater than or equal to 50 µg/L and must not vary by more than 25% of
the known value for standard concentrations less than 50 µg/L. The overall correlation coefficient of the curve
must be >_0.995.
If the stored program readings vary by more than the above acceptance criteria, the stored calibration
program must not be used for quantitation until troubleshooting is carried out to determine and correct the
source of error.
• When a five standard annual curve verification (Option 1) is used the laboratory must check the
calibration curve each analysis day. To do this, the laboratory must analyze a blank to zero the
instrument and analyze a check standard each day that samples are analyzed.
• If compliance samples are analyzed throughout the day, a post calibration check (mid -range) must be
analyzed mid -day and at the end of the run (i.e., roughly every 4 hours based on an eight hour day).
• The check standard concentration must be at mid range and recovery must be within 10% of the known
value.
NOTE: General absorbance standards (Le., DR/check) supplied by some manufacturers cannot be used for
the check standard.
Option 2 — Daily Factory -set Curve Verification: The internal curve may be verified each day compliance
samples are to be analyzed using three standards (not gel or sealed liquid standards) that bracket the range
of the sample .to be analyzed. The values obtained must not vary by more than 10% of the known value for
standard concentrations greater than or equal to 50 µg/L and must not vary by more than 25% of the known
value for standard concentrations Tess than 50 µg/L. The overall correlation coefficient of the curve must be
>_0.995.
Option 3 — Annual Laboratory -generated Calibration Curve: A series of 5 standard concentrations (not
counting the blank) that bracket the range of the samples to be analyzed are analyzed. The obtained values
are programmed into the instrument, computer spreadsheet, scientific calculator, or plotted manually.
Sample results are obtained by comparison to the linear regression of those values. The standard materials
used must be of an acceptable purity. Each analyst performing the test must have an individual calibration
curve. This type of curve must be performed annually (i.e., at least every 12 months)..
• When a five standard annual curve is generated (Option 3), the laboratory must check the calibration
curve each analysis day. To do this, the laboratory must analyze a blank to zero the instrument and
analyze a check standard each day that samples are analyzed. The calibration check is performed
immediately after calibration.
• If compliance samples are analyzed throughout the day, a post calibration check (mid -range) must be
analyzed mid -day and at the end of the run (i.e., roughly every 4 hours based on an eight hour day).
• The check standard concentration must be at mid range and recovery must be within 10% of the known
value.
NOTE: General absorbance standards (i.e., DR/check) supplied by some manufacturers cannot be used for
the check standard.
Option 4 — Daily Laboratory -generated Calibration Curve: A series of 3 standard concentrations (not
counting the blank) that bracket the range of the samples are analyzed. The obtained values are
programmed into the instrument, computer spreadsheet, scientific calculator, or plotted manually. Sample
results are obtained by comparison to the linear regression of those values. The standard materials used
must be of an acceptable purity. Each analyst performing the test must have an individual calibration curve.
This type of curve must be performed each day compliance samples are analyzed.
Rev 04/2012
• When a three standard daily curve is generated (Option 4), the laboratory must check instrument
calibration each day. To do this, the laboratory must analyze a blank to zero the instrument and analyze a
check standard each day that compliance samples are analyzed. The calibration check is performed
immediately after calibration.
• If compliance samples are analyzed throughout the day, a post calibration check (mid -range) must be
analyzed mid -day and at the end of the run (i.e., roughly every 4 hours based on an eight hour day).
• The check standard concentration must be at mid range and recovery must be within 10% of the known
value.
NOTE: General absorbance standard (i.e., DR/check) supplied by some manufacturers cannot be used for
the check standard.
Standard Solutions:
You may prepare a stock standard solution of potassium permanganate and subsequent standard solutions
as described in Standard Methods, 18th Edition - Method 4500-CI G DPD Colorimetric Method 4(a)(2) page
4-46.
NOTE: If purchased standard ampules with a stated range and average value are used, the average
value must be used for the true value of the standard.
Purchased "Gel -type" or sealed liquid ampoule standards may be used for daily calibration verification only.
These standards must be verified initially and every 12 months thereafter, with the standard curve. Note: It
is only necessary to verify the gel or sealed liquid standard which falls within the concentration range of the
curve used to measure sample concentrations. For example, if you are measuring samples against a low
range curve, a 200 µg/L standard would be verified, and not the 800 µg/L standard since the 800 standard
would be measured using a high range curve.
Immediately following curve verification:
1. Zero the instrument with the gel blank.
2. Read and record gel standard values.
3. Assign the obtained values as the true value.
The assigned values will be used for the next twelve months, or until a new curve verification is performed.
The gel/liquid standard verification must be performed for each instrument on which they are to be used. If
multiple instruments and/or standard sets are used, each must have assigned values specific for the
instrument and standard set.
Some commercial laboratory facilities may be able •to provide assistance with the field photometric meter
curve verifications.
Equipment Maintenance:
Equipment required to perform the analysis means properly maintained equipment. Clean and maintain
equipment as indicated by the manufacturer's instructions. Ref: 15 A NCAC 2H .0805 (a) (6) (H).
Sample lines and the pour-thru cell can become discolored and clogged due to a build up of colored reaction
products.
The Hach Water Analysis Handbook, Third Edition (pg. 389) states:
Cleaning the Pour-Thru Cell
The Pour-Thru Cell may accumulate a buildup of colored reaction products, especially if the reacted
solutions are allowed to remain in the cell for long periods after measurement. Remove the buildup
by rinsing the cell with 5.25 N sulfuric acid followed by rinsing with deionized water.
If your facility does not have access to or is not comfortable using sulfuric acid cleaning solution, a
contract laboratory or vendor may perform this service. Please exercise proper safety precautions when
handling acid solutions.
Rev 04/2012
Documentation:
The following must be documented whenever sample analysis is performed.
1. Time and date of sample collection
2. Time and date of analysis (to verify the 15 minute holding time is met)
3. Collector's/analyst's name
4. Value obtained for the check standard (verification of ± 10% recovery)
5. The time the calibration check was performed.
6. Value obtained for the blank
7. Sample location/site
8. Proper units of measure
9. Post calibration checks (if applicable)
10. Traceability for chemicals, reagents, standards and consumables
11. Equipment maintenance (recommended)
Refer to Quality Assurance Policies for Field Laboratories, (at
http://portal.ncdenr.orq/web/wq/lab/cert/field/policv) for additional quality assurance and quality control
requirements.
Ref: Standard Methods 4500-CI G
'Ref: Standard Methods, 20th Edition - Method 1020B Quality Control (10)
Rev 04/2012
Certification #
Date Facility Name:
Analyst:
Permit #:
pH and Temperature
rcererence metnoa: (ph) sm lti— Edition 4500 H B/ (Temperature) SM 18' Edition 2550B
Cal. Time
Cal Buffer 4.0
Cal Buffer 7.0
Cal Buffer 10.0
*Check Buffer 7.0
% Slope
Comments
*pH buffer checks are to be within ± 0.1 pH units of the standards true value
Facility/Sample location
Time Analyzed*
pH Result S.U.
*Temperature
(Reported)
►Buffer Check
value S.U.
Comments
*Sample measured direct y in the stream only time analyzed is recorded.
0-Indicates a recommended drift check. (Use Buffer 7.0) Should be within ± 0.1 units of the buffer's true
value)
* Reported temperature is the effluent sample temperature. Analyzed on the pH meter.
Total Residual Chlorine (TRC)
Reference Method: SM 18th Edition 4500 CI G
Sample Location
Time
Sampled
Time
Analyzed
TRC
Result
ug/L
*Daily check obtained
value ug/L/ time
analyzed
Comment
* (Must recover within ±10% of the check standard's obtained true value)
*Daily check standard analyzed immediately before sample analyzed
Dissolved Oxygen (DO)
Reference (DO) Method: SM 18th Edition 4500 0 G
Facility/Sample
Location
Calibration
Time
Adjusted Air
Calibration♦
(% or mg/L)
Temp °C
(Calibration)
DO reading
• mg/L
*Time
Analyzedlfime
Sampled
Comments
♦ Based on appropriate altitude adjustment
• When performing analysis at multiple sampling locations, re-calibration(s) should be performed every four
hours.
*Analysis time and sampling time the same. (Ideally the sample should be analyzed in -situ).
Information
Dates
Reagent
Vendor
Lot#
Expiration
(date)
Received
(date)
*Opened
(date)
*In use
(date)
pH 4 buffer
pH 7 Buffer
pH 10 Buffer
DPD
* Date opened and date put in use is the same unless otherwise noted.
Annual Temperature Sensor Verifications
Temperature Sensor Verification
(Must be done every 12 months)
Meter
Model
NIST Them
Serial#
Temp. reading
from meter °C
Temp.
reading from
NIST °C
*Correction
Date Verified
Next Date Due,
#pH
DO
•
*Thermometer reading must be less than 1°C from the NIST Thermometer.
#If effluent temperature is not being reported off the pH meter, the Temperature Sensor does not have to be
verified.
TRC Curve Verification
Verification Date
Program
Used on Meter
Date Due
Comments
* Annual verification must be done every 12 months
Gel Standard Verification
Lot #
Vendor
Date Verified
Date Due
Assigned value
pg/L
Acceptance Range
* must be + 10% of true value
* Must be verified every 12 months against the annual verification curve and assigned a new value
Field Personnel Notes
5/7/2012
DENR-FRC
JUN 0 7 2012
OWO
TOWN OF. ANSONVILLE
June 1, 2012
Paul Rawls
Environmental Program Consultant
NCDENR
225 Green Street, Suite 714
Fayetteville, NC 28301-5043
Re: Compliance Evaluation Inspection and Request for Action
Town of Ansonville Wastewater treatment Facility
NPDES Peimit #NC0081825
Anson County
Dear Mr. Rawls:
In response to your Compliance Inspection conducted on May 4, 2012, please be advised that we
will review our Sewer Use Ordinance and suggest that Universal Fibers Systems, Inc. install an
Oil and Grease Separator in order to remove heavy debris, including rags and plastic waste.
Also please be advised that the second grinder pump for the Depot Lift Station has been replaced
and is in service.
Thank you for your helpful suggestions to improve our service to our citizens.
Sincerely,
lama)/
Sarah Burr •
Town of Ansonville
Water/Sewer Department
• PO BOX 437 • ANSONVILLE, NORTH CAROLINA • 28007 • (704) 826-8404 •
}J A.. e SON; f3' IEEE
June 1, 2012
Ravi Kumar
Universal Fibers Systems, Inc.
POBox 456
Ansonville, NC 28007
Re: Repairs at Universal Lift Station
Dear Mr. Kumar:
Enclosed please find invoices from Aqu -Trol, Inc. along with Tim's Septic Tank in the amount
of $1,714.36, which was the Town of Ansonville's costto repair the Universal Pump Station on
April 25, 2012 due to descript debris including heavy rags., Please make your check payable to
the Town of Ansonville, as that our service contractors have already been paid.
Also, please secure, for our review, quotes for the installation of an Oil and Grease Separator to
be installed on your process sewer outfall connection. We feelthat this improvement will prevent
any future damage to the pump station. Any additional damage to our equipment will be charged
back to Universal Fibers Systems, Inc. The Highway 52 Pump Station has also been adversely:
affected by waste products from your premises.
Thank you for your prompt attention in this matter.
Sincerely,
Sarah Burr
Town of Ansonville
Water/Sewer Department
BOX PO s 437 ANSON\'ILLS, NORTH CAROLINA 2800 r (704) 826-8404
6f 4' � r't. 1
TOWN 'OF ANSONVILLE
July 13, 2012
Paul Rawls
Environmental Program Consultant
NCDENR
225 Green Street, Suite 714
Fayetteville, North Carolina 28301-5043
Re: Compliance Evaluation Inspection and Request for Action
Town of Ansoriville Wastewater Treatmehadeility --- - —
NPDES Permit #NC0081825
Anson County
Dear Mr. Rawls:
DENR-FRO
JUL 2 0 2012
DINS
Thank you for your through inspection of our Treatment Plant on May 4, 2012. Please review
our response to the noted deficiencies:
Wastewater Treatment Facility (WWTP) Corrosion
Per your suggestion, our Mayor Mr. Lyndell Ingram has approved'the rehabilitation of the
Equalization Basin and theDigestor. Repairs will include replacement of rusted support member
and the welding of bulkheads as needed. Gopher Utilities will dewater, sandblast and re -coat
these tanks. The repairs are scheduled for the week of July 16, 2012 weather permitting.
Cathodic protection will be reconnected at that time.
Responsibilities of an Operator'in Responsible Charge (ORC)
Mr. Buddy Waddell willcontinue to be the.ORC_ofthis Treatment Plant. As suggested. Mr.
Waddell will be encouraged to report any defect that becomes apparent to him during his daily
visits. A log is provided for this purpose and can be located in the Flow Meter enclosure. In
addition to Mr. Waddell's visual inspection Ms. Sarah Burr will log defects for immediate repair.
An example of improved response is the' fabrication of new belt guards for the two PD Blowers.
Effluent Disinfection
Prior to the inspection,, our staff had resorted to using one tube for the application of HTH. Our
chemical supplier, Norweco, apparently had a bad bunch of "quick" dissolving tablets that
resulted in an extremely high.residual chlorine. This condition has been corrected and three tubes
are now in service.
•
Effluent Discharge Pipe/Right of Way
Our staff has secured a key to the gate that prevents easy access to this right of way. As of this
writing, we regret to inform you that a beaver pond prevents our cross country access to the
discharge site.
The pond is located on the Pee Dee River Wildlife Preserve and has become a noted attraction
for visitors. We cannot at this time manage this ongoing condition. Perhaps the Corp of
Engineers can determine an appropriate remedy.
Record Keeping
As suggested in your correspondence, we are committed to good record keeping. Process records
can be found on the bi-weekly bench sheets.
Effluent Monitoring and Reporting
During the lab. inspection conducted on July 12, 2012, Mr. Jeff Adams from the Laboratory
Certification Branch provided instructionconcerning appropriate instrument calibrations, i.e., pH
and DO meters. Please extend our thanks for such helpful assistance to Mr. Adams. Ms.
McLaughlin has reviewed the composite sampler instructions and will continue to composite
samples as required.
Safe
Belt guards for the two PD Blowers have been locally fabricated by Mr. Bill Cratty and have
been installed. Catwalk supports will be replaced during the week of July 16, 2012.
Repairs, Upgrade and/or Consideration of Regionalization
The Town of Ansonville has an outstanding loan balance greater than $700,000.00 on our sewer
infrastructure. Therefore, withoutadditional grant funding, regionalization is not feasible at this
time.
If you have any questions or comments, please do not hesitate to contact me.
Sincerely,
CiACQA 81-tAJN--'
Sarah Burr
Utility Director
Town of Ansonville
■ PO BOX 437 ■ ANSONVILLE, NORTH CAROLINA ■ 28007 ■ (704) 826-8404 ■