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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. ■ nnn n nn■ ■ nnn ■ nnn ■ ❑❑❑ Yes No NA NE ■ nnn ■ nnn ■ ❑n❑ ■ n ❑ ❑ ❑ ❑❑■ 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 .;\ !!';;,..VN " • • 141e. 4 • ^,," 1,4,1 • . 7". '',,,,-"' ,, ,;_„.— • \ ', s'•:-, k i, ',.., , ,• 1-v , , ',,:,".„ , ,.. ' .-.;%$!,,, , ',--.:,• •-- -„',, ,...,- „ - er- .s.- ,',-.)-•".•.;,, —, = . --.. , , , • _•.. .,„ , • —,-L2 1%. '-e." " ' • 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 ■