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HomeMy WebLinkAboutNC0025496_Fact Sheet_20210805Fact Sheet NPDES Permit No. NC0025496 Permit Writer / Email Contact Diana Yitbarek / diana.yitbarek@ncdenr.gov Date: 8/5/2021 Division/Unit: NC DEQ Division of Water Resources / NPDES Municipal Permitting Unit Fact Sheet Template: Version 1/9/2017 Permitting Action: ▪ Renewal ❑ Renewal with Expansion ❑ New Discharge ❑ Modification (Fact Sheet should be tailored to mod request) Note: A complete application should include the following: • For New Dischargers, EPA Form 2A or 2D requirements, Engineering Alternatives Analysis, Fee • For Existing Dischargers (POTW), EPA Form 2A, three effluent pollutant scans, four 2nd species WET tests. • For Existing Dischargers (Non-POTW), EPA Form 2C with correct analytical requirements based on industry category. Complete applicable sections below. If not applicable, enter NA 1. Basic Facility Information Table 1. Facility Information Facility Information Applicant/Facility Name: City of Lincolnton/Lincolnton Wastewater Treatment Plant (WWTP) Applicant Address: PO Box 617, Lincolnton, NC 28093-0617 Facility Address: 550 Highway 150 Bypass West, Lincolnton, NC 28092 Permitted Discharge Flow: 3.5, 4.5, and 6 0 million gallons per day (MGD) Facility Type/Waste: Major Municipal/ 67% Domestic and 33% Industrial' Facility Class: Class IV Biological - 15A NCAC 08G .0302 Treatment Units: Influent lift pump station, automatic bar screening and vortex grit removal structures, orbital oxidation ditch, four diffused aeration basins, two final clarifiers, three -channel chlorine contact basins (sodium hypochlorite), dechlorination chamber (sodium bisulfite), four anaerobic sludge digesters, two digested sludge storage tanks, sludge drying beds, and backup power generator Pretreatment Program (Y/N) Y County: Lincoln Region: Mooresville Regional Office (MRO) 1 Percentage based on the permitted industrial flow. Page 1 of 14 Permitting Action: The City of Lincolnton (City) applied for NPDES permit renewal for Lincolnton WWTP in February 2020. The WWTP has a design capacity of 6.0 MGD and is currently authorized to discharge 3.5 MGD (up to 4.5 MGD and 6.0 MGD upon request) into South Fork Catawba River, a class WS-IV waters. The class denotes use as water supply for drinking, culinary, or food processing purposes. The average effluent flow for the past five years was 2.2 MGD. The Lincolnton WWTP (Facility) serves about 10,400 customers within the City. The Facility currently has an active Pretreatment Program with a Long -Term Monitoring Program (LTMP). There are two non -categorical significant industrial users (SIUs) and three categorical industrial users (CIUs) discharging to the system. The Facility permitted industrial flow is 1.15 MGD, and the pretreatment program will continue to be implemented in accordance with the permit. 2. Receiving Waterbody Information: Table 2. Receiving Waterbodv Information Outfalls/Receiving Stream(s): Outfall 001 [35°27'02.5"N 81°15'38.8"W]/ South Fork Catawba River Stream Segment/Assessment Unit (AU): 11-129-(3.7) Stream Classification: WS-Iv Drainage Area (mi2): 395 Summer 7Q10 (cfs) 77 Winter 7Q10 (cfs): 140 30Q2 (cfs): 190 Average Flow (cfs): 500 Instream Waste Concentration (IWC) (% effluent): 6.5 % at 3.5 MGD (7Q10 Summer) 8.3 % at 4.5 MGD (7Q10 Summer) 10.7 % at 6.0 MGD (7Q10 Summer) 2018 303(d) listed/parameter: No/NA Subject to TMDL/parameter: Yes- Mercury Statewide TMDL implemented in 2012 Basin/Sub-basin/ Hydrologic unit code (HUC): Catawba River Basin/03-08-35/03050102 USGS Topo Quad/State Grid: Lincolnton West/F13NE The South Fork Catawba River Stream Index Number 11-129-(3.7) is not listed on North Carolina's 2010 303(d) list of impaired streams. This river is formed by the confluence of Jacob and Henry Forks in Catawba County. It flows southerly through Lincoln and Gaston counties before joining the mainstem Catawba River at Lake Wylie. The river is used extensively as both a drinking water supply and for the assimilation of municipal and industrial wastewater. The Town of Dallas' Water Treatment Plant is located approximately 13.7 miles downstream of Lincolnton's discharge point. Page 2 of 14 3. Effluent Data Summary Effluent data for Outfall 001 is summarized below from September 2016 through September 2020. Table 3. Effluent Data Summary with permit limits Outfall 001. Parameters listed as in the last permit. Parameter Units Average Max. Min. Permit Limit Flow MGD 2.12 12.752 0.62 MA* 3.5 MGD BOD5 mg/1 6.32 2533 1.9 MA 30.0 mg/I WA* 45.0 mg/I Total Suspended Solids (TSS) mg/1 8.85 660 2.3 MA 30.0 mg/I WA 45.0 mg/I NH3N mg/1 0.60 15.3 0.1 MA 12 mg/I WA 35 mg/I Fecal Coliform #/100 ml 11.0 (Geomean) 153L MA 200/100m1 WA 400/100m1 pH SU 6.9 7.8 6.0 6.0<pH<9.0 Total Residual Chlorine (TRC) µg/1 17.8 49.0 10.0 DM* 28.00 pg/I Temperature °C 19 30 8 Conductivity umhos/cm -337.6 1144.0 107.0 Total Nitrogen (TN) mg/1 9.6 13.9 4.5 Total Phosphorus (TP) m /1 g 1.81 9.2 0.2 Total Silver µg/1 < 1.0 < 1.0 < 1.0 Total Antimony µg/1 10.8 28.0 1.6 Total Cadmium µg/1 < 0.2 < 1.0 < 2.0 Bis (2-Ethylhexyl) Phthalate µg/1 55.3 < 320.04 1.2 Hardness as CaCO3 µg/1 37.6 94.0 23.8 *MA -Monthly Average, WA -Weekly Average, DM -Daily Maximum, DA=Daily Average. Table 4. Effluent Data Summary from voluntary sampling Outfall 001 from September 2016 through September 2020. Parameter Units Average Max. Dissolved Oxygen (DO) mg/1 7.8 8.3 Color Admi unit 55 75 Chem. Oxygen Demand (COD) m /1 g 96 170 Oil & grease mg/1 2.4 2.4 2 Maximum flow value recorded on 6/9/2019. 3 Due to heavy rain event on 3/26/21 when only one final clarifier was in service. 4 On 3/21/19, the contract laboratory used a much higher detection level than normal and came back non -detected at <320 ug/I. Page 3 of 14 Table 5. Effluent Data Summary from expanded effluent pollutant scan Outfall 001 from September 2016 through September 2020. Parameter Units Average Max. Cyanide µg/1 5.05 6.0 Chromium µg/1 1.34 6.0 Copper µg/1 7.7 33.0 Lead µg/1 9.0 10.0 Zinc µg/1 64.6 380.05 Selenium µg/1 9.4 10.0 Total Phenolics µg/1 9.4 14.0 Mercury ng/1 3.1 11.4 *See section 6.6 Mercury Statewide Total Maximum Daily Load (TMDL) Evaluation Sample results for the sampled constituents not included above such as arsenic, beryllium, lead, nickel, and molybdenum, were less than the method detection limit. 4. Instream Data Summary Instream monitoring may be required in certain situations, for example, 1) to verify model predictions when model results for instream DO are within 1 mg/1 of instream standard at full permitted flow; 2) to verify model predictions for outfall diffuser; 3) to provide data for future total maximum daily load (TMDL); 4) based on other instream concerns. Instream monitoring may be conducted by the Permittee, and there are also Monitoring Coalitions established in several basins that conduct instream sampling for the Permittee (in which case instream monitoring is waived in the permit as long as coalition membership is maintained). Instream data summary and instream monitoring proposed for this permit action: The current permit requires upstream monitoring for hardness. The upstream location is about 4000 feet from the outfall, at Madison Street. The formerly used downstream location is about 1 mile from the outfall, at Laboratory Road. There is not recent available instream monitoring data to report. In this permit cycle, per 15 A NCAC 02B.0508, monitoring requirements for instream conductivity, temperature, and dissolved oxygen are added to the permit. Hardness: Effluent hardness and instream hardness sampling, upstream of the discharge, were added to the permit in the last permit cycle. Instream monitoring requirement for fecal coliform, listed under 15 A NCAC 02B.0508, is not included in this permit cycle per April 22, 2002, Instream Conductivity and Fecal Coliform Monitoring Guidance. This receiving stream is not class B nor impaired for fecal coliform. Is this facility a member of a Monitoring Coalition with waived instream monitoring (Y/N): NO Name of Monitoring Coalition: NA 5 Suspected laboratory error on 9/12/19. Potential mix-up between the influent and effluent sample analysis. Page 4 of 14 5. Compliance Summary From October 2016 to March 2021, the Facility received a total of two Notices of Violation (NOVs) for exceeding weekly average (WA) limits for fecal coliform and TSS and one Notice of Deficiency (NOD). The Facility did not receive any Enforcement Cases in this period. The MRO representative, Ori Tuvia, is working with the Facility to monitor the Facility's compliance performance. The report on limit violations that proceeded to NOV and NOD were as follows: • Fecal coliform - 1 WA limit exceedance in 2019 at 1556/100 ml. • TSS - 1 WA limit exceedance at 63.9 mg/1. • BOD - 1 WA limit exceedance in 2021. Summary of the compliance record with aquatic toxicity test limits and any second species test results (past 5 years): The Facility passed eighteen of eighteen quarterly chronic toxicity tests from March 2017 to December 2020 and complied with all four 2nd species WET tests in September 2017, March 2018, June 2019, and December 2020. Summary of the results from the most recent compliance inspection: The last inspection conducted in March 2021 reported that the Facility had three of four aeration basins in service; the 4th aeration basin was used as a digester due to the wet season. One of the clarifiers was out for repairs. The Facility is equipped with three anaerobic digesters and three storage tanks; one of the digesters was out of order due to failure in the cover that causes it to tilt. This was noted in the 2019 inspection as well. The Region recommends repairing it or taking it out to prevent a major failure. 6. Water Quality -Based Effluent Limitations (WQBELs) 6.1 Dilution and Mixing Zones In accordance with 15A NCAC 2B.0206, the following stream flows are used for dilution considerations for development of WQBELs: 1Q10 streamflow (acute Aquatic Life); 7Q10 streamflow (chronic Aquatic Life; non -carcinogen HH); 30Q2 streamflow (aesthetics); annual average flow (carcinogen, HH). If applicable, describe any other dilution factors considered (e.g., based on CORMIX model results): NA If applicable, describe any mixing zones established in accordance with 15A NCAC 2B. 0204(b): NA Streamflow values were extracted from the previous fact sheet from 2012 and 2016. 6.2 Oxygen -Consuming Waste Limitations Limitations for oxygen -consuming waste (e.g., BOD) are generally based on water quality modeling to ensure protection of the instream dissolved oxygen (DO) water quality standard. Secondary TBEL limits (e.g., BOD= 30 mg/1 for Municipals) may be appropriate if deemed more stringent based on dilution and model results. If permit limits are more stringent than TBELs, describe how limits were developed: The current permit limits for BOD are secondary TBELs and are based on 40 CFR 133.102. and 15A 2B. 0406. No changes for BOD limits are proposed for this permit cycle. Page 5 of 14 6.3 Ammonia and Total Residual Chlorine Limitations Limitations for ammonia are based on protection of aquatic life utilizing an ammonia chronic criterion of 1.0 mg/1 (summer) and 1.8 mg/1 (winter). Acute ammonia limits are derived from chronic criteria, utilizing a multiplication factor of 3 for Municipals and a multiplication factor of 5 for Non -Municipals. Limitations for Total Residual Chlorine (TRC) are based on the NC water quality standard for protection of aquatic life (17 ug/1) and capped at 28 ug/1 (acute impacts). Due to analytical issues, all TRC values reported below 50 ug/1 are considered compliant with their permit limit. Describe any proposed changes to ammonia and/or TRC limits for this permit renewal: The current permit sets MA and WA limits for ammonia for the three flow tiers, 3.5 MGD, 4.5 MGD, and 6.0 MGD. None of the ammonia results from the evaluated period exceeded 35 mg/1. The maximum value of ammonia reported was 15.3 mg/1. The WQBELs for ammonia were verified in the WLA calculations for the Facility's specific flow tiers. The ammonia limits will be the same as the previous permit cycle. The facility uses chlorination as its primary disinfection, sodium hypochlorite 10%, and does not have post aeration. The current permit limits TRC at 28 ug/L as a daily maximum for the three flow tiers. Though several reported TRC values exceeded the 28 ug/L daily maximum limit, the facility is considered compliant with its permit since all reported values were less than 50 ug/L. The maximum TRC value reported was 49 ug/L. The TRC limit has been reviewed in the attached WLA and has been found to be protective. No changes are proposed for TRC. 6.4 Reasonable Potential Analysis (RPA) for Toxicants The need for toxicant limits is based upon a demonstration of reasonable potential to exceed water quality standards, a statistical evaluation that is conducted during every permit renewal utilizing the most recent effluent data for each outfall. The RPA is conducted in accordance with 40 CFR 122.44 (d) (i). The NC RPA procedure utilizes the following: 1) 95% Confidence Level/95% Probability; 2) assumption of zero background; 3) use of Y2 detection limit for "less than" values; and 4) stream flows used for dilution consideration based on 15A NCAC 2B.0206. Effective April 6, 2016, NC began implementation of dissolved metals criteria in the RPA process in accordance with guidance titled NPDES Implementation of Instream Dissolved Metals Standards, dated June 10, 2016. The RPAs were conducted for permitted flows of 3.5 MGD, 4.5 MGD, and 6.0 MGD with a 7Q 1 OS of 77 cubic feet per second (cfs) and specific hardness values. RPAs were conducted on effluent toxicant data collected in the Permittee's 2017 to 2019 effluent pollutant scans and DMRs. Pollutants of concern included toxicants with positive detections and associated water quality standards/criteria. The data set was limited for beryllium, chlorides, total phenolic compounds, chloroform, chlorodibromomethane. Based on this analysis, the following permitting actions are proposed for this permit: • Effluent Limit with Monitoring. The following parameters will receive a water quality -based effluent limit (WQBEL) since they demonstrated a reasonable potential to exceed applicable water quality standards/criteria: o 3.5 MGD: Bis (2-Ethylhexyl) Phthalate6 O 4.5 MGD: Bis (2-Ethylhexyl) Phthalate6 o 6.0 MGD: Bis (2-Ethylhexyl) Phthalate6 Bis (2-ethylhexyl) phthalate was reported at less than detection, with detection levels ranging from < 1.2 µg/L to < 320 µg/L, in the Effluent Pollutant Scans and discharge monitoring reports (DMRs). Based on the 6 Per potential laboratory detection level error explained on June 9, 2021, City's email, the RPA was performed with whole value, 1/2 value, and zero. The output remained the same in the three scenarios and a permit limit is granted for Bis (2-Ethylhexyl) Phthalate in this permit cycle. Page 6 of 14 RPA, the City's total bis (2-ethylhexyl) phthalate allowable discharge concentration is 4.8 µg/L for the 3.5 MGD flow tier. DWR's laboratory identifies the target Practical Quantification Limits (PQLs) for bis (2- ethylhexyl) phthalate as 10 µg/L. 15A NCAC 2B .0505 (e) (4) requires that all test procedures must produce detection and reporting levels that are below the permit discharge requirements, and all data generated must be reported to the approved detection level or lower reporting level of the procedure. If no approved methods can achieve a detection level below the permit discharge requirement (or allowable discharge concentration) the method with the lowest detection level must be used. To provide an opportunity for the City to develop an effluent bis (2-ethylhexyl) phthalate analysis using a target Practical Quantification Limit (PQL) of 10 µg/L, a 1-year sampling plan has been added to the permit. See Special Condition A. (8) To provide an opportunity for the City to develop a plan to assess sources of bis (2-ethylhexyl) phthalate in order to come in compliance with the limits in Section A. (1.), a 3-year schedule of compliance has been added to the permit. See Special Condition A. (9.) • Monitoring Only. The following parameters will receive a monitor -only requirement since they did not demonstrate reasonable potential to exceed applicable water quality standards/criteria. Still, the maximum predicted concentration was >50% of the allowable concentration: o 3.5 MGD: Antimony and silver o 4.5 MGD: Copper, silver, zinc7, and antimony. o 6.0 MGD: Copper, silver, zinc7, and antimony. • No Limit or Monitoring: The following parameters will not receive a limit or monitoring, since they did not demonstrate reasonable potential to exceed applicable water quality standards/criteria and the maximum predicted concentration was <50% of the allowable concentration: o 3.5 MGD: Arsenic, beryllium, cadmium, chromium, copper, cyanide, lead, mercury, molybdenum, nickel, selenium, zinc, chloroform, and total phenolic compounds. o 4.5 MGD: Arsenic, beryllium, cadmium, chromium, cyanide, lead, mercury, molybdenum, nickel, selenium, chloroform, and total phenolic compounds. o 6.0 MGD: Arsenic, beryllium, cadmium, chromium, cyanide, lead, mercury, molybdenum, nickel, selenium, chloroform, and total phenolic compounds. These compounds will be monitored in the pretreatment program during this permit cycle: Arsenic, cadmium, chromium, copper, cyanide, lead, mercury, molybdenum, nickel, selenium, antimony, silver, zinc, chlorodibromomethane, and bis (2-ethylhexyl) phthalate. • POTW Effluent Pollutant Scan Review: Three effluent pollutant scans were evaluated for additional pollutants of concern. o The following parameter(s) will receive a water quality -based effluent limit (WQBEL) with monitoring, since as part of a limited data set, two samples exceeded the allowable discharge concentration: • 3.5 MGD: NA • 4.5 MGD: NA • 6.0 MGD: NA o The following parameter(s) will receive a monitor -only requirement, since as part of a limited data set, one sample exceeded the allowable discharge concentration: • 3.5 MGD: Chlorodibromomethane • 4.5 MGD: Chlorodibromomethane • 6.0 MGD: Chlorodibromomethane Per suspected laboratory error explained on June 9, 2021, City's email, the RPA was performed with 380 ug/I, 219 ug/I, and zero. The output remained the same in the three scenarios and a monitor -only requirement is granted for zinc in this permit cycle. Page 7 of 14 RPA results as well as a copy of the Dissolved Metals Implementation Fact Sheet for freshwater are included as attachments of this Fact Sheet 6.5 Toxicity Testing Limitations Permit limits and monitoring requirements for Whole Effluent Toxicity (WET) have been established in accordance with Division guidance (per WET Memo, 8/2/1999). Per WET guidance, all NPDES permits issued to Major facilities or any facility discharging "complex" wastewater (contains anything other than domestic waste) will contain appropriate WET limits and monitoring requirements, with several exceptions. The State has received prior EPA approval to use an Alternative WET Test Procedure in NPDES permits, using single concentration screening tests, with multiple dilution follow-up upon a test failure. Describe proposed toxicity test requirement: This is a Major Publicly Owned Treatment Work (POTW), and a chronic WET limit will continue on a quarterly frequency at Outfall 001 at 6.5 % at 3.5 MGD, 8.3 % at 4.5 MGD, and 10.7 % at 6.0 MGD using Ceriodaphnia dubia. 6.6 Mercury Statewide Total Maximum Daily Load (TMDL) Evaluation There is a statewide TMDL for mercury approved by EPA in 2012. The TMDL target was to comply with EPA's mercury fish tissue criteria (0.3 mg/kg) for human health protection. The TMDL established a wasteload allocation for point sources of 37 kg/year (81 lb/year) and is applicable to municipals and industrial facilities with known mercury discharges. Given the small contribution of mercury from point sources (-2% of total load), the TMDL emphasizes mercury minimization plans (MMPs) for point source control. Municipal facilities > 2 MGD and discharging multiple quantifiable levels of mercury (>1 ng/1) received an MMP requirement. Industrials are evaluated on a case -by -case basis, depending if mercury is a pollutant of concern. Effluent limits may also be added if annual average effluent concentrations exceed the WQBEL value (based on the NC WQS of 12 ng/1) and/or if any individual value exceeds a TBEL value of 47 ng/1 A mercury evaluation was conducted in accordance with the Permitting Guidance developed for the implementation of the statewide Mercury TMDL to determine the need for a limit. Below find summaries of compliance mercury data from 2016 to 2020 for 3.5 MGD, 4.5 MGD, and 6.0 MGD. Table 6. Mercury Effluent Data Summary and Evaluation - 3.5 MGD 2016 2017 2018 2019 2020 # of Samples 2 4 4 Mercury Annual Average (ng/l) 2.4 3.1 3.2 4.7 2.1 Mercury Annual Max (ng/1) 3.3 5.9 6.1 11.4 3.1 TBEL, ng/L 47 WQBEL, ng/L 182.3 Table 7. Mercury Effluent Data Summary and Evaluation - 4.5 MGD 2016 2017 2018 2019 2020 # of Samples 2 4 -. Mercury Annual Average (ng/1) 2.4 3.1 3.2 4.7 2.1 Mercury Annual Max (ng/1) 5.9 6.1 11.4 3.1 Page 8 of 14 TBEL, ng/L 47 WQBEL, ng/L 144.5 Table 8. Mercury Effluent Data Summary and Evaluation - 6.0 MGD 2016 2017 2018 2019 2020 #of Samples 2 4 4 4 Mercury Annual Average (ng/1) 2.4 3.1 3.2 4.7 2.1 Mercury Annual Max (ng/1) 3.3 5.9 6.1 11.4 3.1 TBEL, ng/L 47 WQBEL, ng/L 111.4 Based on the NC water quality standard of 12 ng/L and the data collected, the water quality -based effluent limitation (WQBEL) for mercury is 182.3 ng/1, 144.5 ng/1, and 111.4 ng/1 for 3.5 MGD, 4.5 MGD, and 6.0 MGD, respectively. The technology -based effluent limit (TBEL) is 47 ng/1 for all flow tiers. Describe proposed permit actions based on mercury evaluation: Mercury evaluation results used method 1631E. No annual average mercury concentration exceeded the WQBEL, and no individual mercury sample exceeded the TBEL. The maximum value reported in this period was 11.4 ng/1. No mercury limit is required, but the mercury minimization plan (MJ\1P) will continue to be required in this permit cycle because the Facility is greater than 2.0 MGD and discharged multiple quantifiable levels of mercury (>1 ng/1). 6.7 Other TMDL/Nutrient Management Strategy Considerations If applicable, describe any other TMDLs/Nutrient Management Strategies and their implementation within this permit: The current permit reflects the monthly nutrient (TP and TN (TKN + NO3-N + NO2-N)) monitoring for the three flow tiers, 3.5 MGD, 4.5 MGD, and 6.0 MGD. No changes are proposed for nutrients. Annual loads for TN and TP will be revisited when a final nutrient TMDL for the Catawba River Basin is concluded. Annual nutrient TN and TP loads: The maximum TN and TP annual loads during the evaluated period were 85,232 lb/yr (2020) and 14,820 lb/yr (2020). The Facility is currently operating at a flow limit of 3.5 MGD. Table 9. Nutrients Effluent Data Summary Parameter 2017 2018 2019 2020 Annual TN load, Ib/yr 53,219 50,556 61,630 85,232 Annual TP load, Ib/yr 15,931 5,980 9,849 14,820 6.8 Other WQBEL Considerations If applicable, describe any other parameters of concern evaluated for WQBELs: NA If applicable, describe any special actions (HQW or ORW) this receiving stream and classification shall comply with in order to protect the designated waterbody: NA Page 9 of 14 If applicable, describe any compliance schedules proposed for this permit renewal in accordance with 15A NCAC 2H.0107(c)(2)(B), 40CFR 122.47, and EPA May 2007 Memo: NA If applicable, describe any water quality standards variances proposed in accordance with NCGS 143- 215.3(e) and 15A NCAC 2B. 0226 for this permit renewal: NA 7. Technology -Based Effluent Limitations (TBELs) Municipals (if not applicable, delete and skip to Industrials) Are concentration limits in the permit at least as stringent as secondary treatment requirements (30 mg/1 BOD5/TSS for Monthly Average, and 45 mg/lfor BOD5/TSS for Weekly Average). YES If NO, provide a justification for alternative limitations (e.g., waste stabilization pond). NA Are 85% removal requirements for BODS/TSS included in the permit? YES. The BOD removal rate for the evaluated period was over 96% and the TSS removal rate was over 95%. If NO, provide a justification (e.g., waste stabilization pond). NA 8. Antidegradation Review (New/Expanding Discharge) The objective of an antidegradation review is to ensure that a new or increased pollutant loading will not degrade water quality. Permitting actions for new or expanding discharges require an antidegradation review in accordance with 15A NCAC 2B.0201. Each applicant for a new/expanding NPDES permit must document an effort to consider non -discharge alternatives per 15A NCAC 2H.0105( c)(2). In all cases, existing instream water uses and the level of water quality necessary to protect the existing use is maintained and protected. If applicable, describe the results of the antidegradation review, including the Engineering Alternatives Analysis (EAA) and any water quality modeling results: NA 9. Antibacksliding Review Sections 402(o)(2) and 303(d)(4) of the CWA and federal regulations at 40 CFR 122.44(1) prohibit backsliding of effluent limitations in NPDES permits. These provisions require effluent limitations in a reissued permit to be as stringent as those in the previous permit, with some exceptions where limitations may be relaxed (e.g., based on new information, increases in production may warrant less stringent TBEL limits, or WQBELs may be less stringent based on updated RPA or dilution). Are any effluent limitations less stringent than previous permit (YES/NO): YES. Monitoring and reporting for cadmium was removed for 3.5 MGD and 4.5 MGD. Limits for cadmium were removed for 6.0 MGD. If YES, confirm that antibacksliding provisions are not violated: Confirmed. Cadmium was removed based on updated RPA calculations. However, data with the expanded effluent testing will continue to verify this. 10. Monitoring Frequency Requirements Monitoring frequencies for NPDES permitting are established in accordance with the following regulations and guidance: 1) State Regulation for Surface Water Monitoring, 15A NCAC 2B.0500; 2) NPDES Guidance, Monitoring Frequency for Toxic Substances (7/15/2010 Memo); 3) NPDES Guidance, Reduced Monitoring Frequencies for Facilities with Superior Compliance (10/22/2012 Memo); 4) Best Professional Judgement (BPJ). Per US EPA (Interim Guidance, 1996), monitoring requirements are not considered effluent limitations under Section 402(o) of the Clean Water Act, and therefore anti -backsliding prohibitions would not be triggered by reductions in monitoring frequencies. For instream monitoring, refer to Section 4. Page 10 of 14 11. Electronic Reporting Requirements The US EPA NPDES Electronic Reporting Rule was finalized on December 21, 2015. Effective December 21, 2016, NPDES regulated facilities are required to submit Discharge Monitoring Reports (DMRs) electronically. While NPDES regulated facilities would initially be required to submit additional NPDES reports electronically effective December 21, 2020, EPA extended this deadline from December 21, 2020, to December 21, 2025. The current compliance date, effective January 4, 2021, was extended as a final regulation change published in the November 2, 2020, Federal Register. This permit contains the requirements for electronic reporting, consistent with Federal requirements. 12.Summary of Proposed Permitting Actions Table 10. Current Permit Conditions and Proposed Changes for 3.5 MGD, 4.5 MGD, and 6.0 MGD Parameter Current Permit Limits and Monitoring Frequency Proposed Change Basis for Condition/Change Flow MA 3.5 MGD, 4.5 MGD, and 6.0 MGD Monitor & Report Continuous No changes 15A NCAC 2B .0505 The average flow for the past five years was 2.2 MGD BOD5 For 3.5 MGD, 4.5 MGD, and 6.0 MGD (All Flows) MA 30.0 mg/I WA 45.0 mg/I Monitor & Report Daily for All Flows No changes TBEL. Secondary treatment standards/40 CFR 133 / 15A NCAC 2B .0406. TSS For 3.5 MGD, 4.5 MGD, and 6.0 MGD MA 30.0 mg/I WA 45.0 mg/I Monitor & Report Daily for All Flows No changes TBEL. Secondary treatment standards/40 CFR 133 / 15A NCAC 2B .0406. NH3-N (Summer) 3.5 MGD: 12 mg/I MA 35 mg/I WA 4.5 MGD: 9 mg/I MA 27 mg/I WA 6 MGD: 7 mg/I MA 21mg/IWA Monitor & Report 3/week for All Flows No changes WQBEL based on WLA calculations for Protection of aquatic life due to ammonia toxicity. Fecal coliform (Geometric Mean) For 3.5 MGD, 4.5 MGD, and 6.0 MGD MA 200 /100m1 WA 400 /100m1 No changes WQBEL. State WQ standard, 15A NCAC 2B .0200. Page 11 of 14 Monitor & Report Daily for All Flows pH For 3.5 MGD, 4.5 MGD, and 6.0 MGD 6-9 SU. Monitor & Report Daily for All Flows No changes WQBEL. State W.Q. standard, 15A NCAC 2B .0200 TRC For 3.5 MGD, 4.5 MGD, and 6.0 MGD DM 28.0 µg/I Monitor & Report Daily for All Flows No changes WQBEL. State WQ standard, 15A NCAC 2B .0200. The Division considers all effluent TRC values reported below 50 ug/I to be in compliance with the permit. Temperature Monitor and report effluent daily for All Flows Added requirement for monitoring and report instream for All Flows at a variable** frequency 15A NCAC 2B.0200 and 15A NCAC 2B.0500 Conductivity Monitor and report effluent daily for All Flows Added requirement for monitoring and report instream for All Flows at a variable** frequency The facility has industrial dischargers 15A NCAC 2B.0500 DO None Added requirement for monitoring and report effluent daily for All Flows Added minimum DO limit as 5 mg/I requirement for monitoring and report instream at a variable** frequency 15A NCAC 2B .0500 — Surface Water Monitoring and Reporting. 15A NCAC 02B .0211(6) — Surface water limit (class C waters apply to all waters of the state) Total Nitrogen (TN) Monitor and report monthly for All Flows No changes 15A NCAC 2B .0500 — Surface Water Monitoring and Reporting. Total Phosphorus (TP) Monitor and report monthly for All Flows No changes 15A NCAC 2B .0500 — Surface Water Monitoring and Reporting. Total Silver Quarterly monitoring for All Flows No changes Based on results of Reasonable Potential Analysis (RPA); Predicted Max >_ 50% of Allowable Cw - Continue Quarterly Monitoring State WQ standards, 15A 2B .0200 Page 12 of 14 Total Antimony Quarterly monitoring for 3.5 MGD and 4.5 MGD Monthly monitoring for 6.0 MGD with limits: MA: 52.0 ug/I DM: 52.0 ug/I No changes Based on results of RPA; Predicted Max >_ 50% of Allowable Cw Total Cadmium Quarterly monitoring for 3.5 MGD and 4.5 MGD Monthly monitoring for 6.0 MGD with limits: MA: 5.5 ug/I DM: 25.2 ug/I Removed monitoring, reporting for 3.5 MGD and 4.5 MGD, and limits for 6.0 MGD Based on results of RPA; Predicted Max < 50% of Allowable Cw Total Copper None Added quarterly monitoring for 4.5 MGD and 6.0 MGD Based on results of RPA; Predicted Max >_ 50% of Allowable Cw Total Zinc None Added quarterly monitoring for 4.5 MGD and 6.0 MGD Based on results of RPA; Predicted Max >_ 50% of Allowable Cw Bis (2-ethylhexyl) phthalate Quarterly monitoring for All Flows Added monthly monitoring requirement and limits 3.5 MGD: MA: 4.9 ug/I 4.5 MGD: MA: 3.8 ug/I 6.0 MGD: MA: 3.0 ug/I Added Special Condition A. (8) one year sampling plan. Added Special Condition A. (9) three- year compliance schedule. Based on results of RPA; Predicted Max >_ 50% of Allowable Cw 6 values > allowable concentration Chlorodibromomethane None Added quarterly monitoring for 3.5MGD, 4.5 MGD and 6.0 MGD Based on results of RPA; Predicted Max >_ Allowable Cw Total Hardness Quarterly monitoring upstream and in effluent for All Flows No changes Hardness -dependent dissolved metals water quality standards approved in 2016. Toxicity Test Chronic limit: 6.5 % at 3.5 MGD, 8.3 % at 4.5 MGD, and 10.7 % at 6.0 MGD No changes WQBEL. No toxics in toxic amounts. 15A NCAC 2B.0200 and 15A NCAC 2B.0500 Page 13 of 14 Effluent Pollutant Scan Three times per permit cycle for 3.5 MGD, 4.5 MGD, and 6.0 MGD Next scans must be performed in each of the following years: 2023, 2024, and 2025. 40 CFR parts 423 and 122 Mercury Minimization Plan (MMP) MMP for 3.5 MGD, 4.5 MGD, and 6.0 MGD No changes Consistent with EPA approved 2012 Statewide Mercury TMDL Implementation. Electronic Reporting Electronic reporting special condition for 3.5 MGD, 4.5 MGD, and 6.0 MGD Added language for new electronic reporting deadline December 21, 2025 In accordance with EPA Electronic Reporting Rule 2015 and Rule -Phase 2 Extension *MA - Monthly Average, WA - Weekly Average, DM - Daily Max. * * Variable monitoring frequency is defined as follows: samples collected three times per week during June 1 through September 30 and once per week October 1 through May 31. 13. Public Notice Schedule Permit to Public Notice: June 22, 2021 Per 15A NCAC 2H .0109 & .0111, The Division will receive comments for a period of 30 days following the publication date of the public notice. Any request for a public hearing shall be submitted to the Director within the 30 days comment period indicating the interest of the party filing such request and the reasons why a hearing is warranted. If you have questions regarding any of the above information or on the attached permit, please contact Diana Yitbarek at (919) 707-9130 or by email at diana.yitbarek@ncdenr.gov. 14. Fact Sheet Addendum (if applicable) Were there any changes made since the Draft Permit was public noticed (Yes/No): No If Yes, list changes and their basis below: NA 15. Fact Sheet Attachments (upon request): 1. RPA Sheets Summary for 3.5, 4.5, and 6.0 MGD. Each sheet contains: input information tab, data analyzed tab, results summary tab, and dissolve to total metals calculation tab. 2. BOD and TSS Removal Rate calculations 3. NH3/TRC/Fecal Waste Load Allocation (WLA) Spreadsheet for 3.5, 4.5, and 6.0 MGD 4. Mercury TMDL Calculations for 3.5, 4.5, and 6.0 MGD 5. Toxicity Summary/WET testing 6. Pretreatment (PT) Summary 7. Monitoring Report Violations Summary 8. Renewal Application Addendums o Signed Effluent Pollutant Scans o Addendum Form 2A o Mercury Minimization Plan (MMP) summary 9. Correspondence 10. NPDES Implementation of Instream Dissolved Metals Standards - Freshwater Standards 11. Compliance Inspection Report 12. Public Water Supply Memo 13. Affidavit 14. NPDES-PT POC's review form Page 14 of 14 Metal Translator /95% Confidence Usi 95% Probabilit NaN Freshwate MAXIMUM DATA POINTS = 58 REQUIRED DATA ENTRY Table 2. Parameters of Concern 0 E 4- 0 d 0 L a d -71 co J 0 a O U O C9 E ❑ CHECK IF HQW OR ORW WQS J_ O 7 J co 7 J coO 7 J_ 7 —I CDC E J coO 7 J_ 7 J O 7 J_ O M J_ O M J co 7 J co 7 J_ 3) 7 J_ 0 7 J_ a) C J_ O 7 J_ O 1 J_ O 1 J coO 7 J_ 7 J O 7 J_ O M J_ O 1 J_ O 1 O LJ? O 340 Q Z CO O 3.2396 905.0818 CO Q Z 10.4720 N N 75.4871 335.2087 Q Z CO LC) 0.2964 125.7052 u CO 1 2 u LL Q Q u u u u u u uU_ U_ u u u 150 10 LO Cq 0.5899 O N 300 117.7325 Q Z 7.8806 LO C. 00 a- 2.9416 ,H CO CO N N- CO 25.0000 Ln O O 126.7335 cUp u'i 0.8 U U 0 Z 0 Z 0 Z 0 Z 0 Z C.) Z C.) Z 0 Z C.) Z 0 Z 0 Z 0 Z C.) Z 0 Z 0 Z 0 Z C.) Z C.) Z 0 Z U U Z U Aquactic Life Human Health Water Supply Aquatic Life Aquatic Life Water Supply Water Supply Aquatic Life Aquatic Life Aquatic Life Aquatic Life Aquatic Life Aquatic Life Aquatic Life Aquatic Life Aquatic Life Water Supply Aquatic Life Water Supply Aquatic Life Aquatic Life Aquatic Life Water Supply Water Supply Water Supply U C VOA) Q U C N Q E m Cadmium N U O 0 Chlorinated Phenolic Compounds Total Phenolic Compounds Chromium III Chromium VI Chromium, Total Copper Cyanide Fluoride Lead Mercury E 2 O Q o Nickel Nickel E C N- v) > C N Chloroform c E Q Chlorodibromomethane N M 7 u) f- co O O N M 7 u) W N- CO Cr, 0 N vl 2 2 0 0 0 0 0 0 0 N N N N N R R R R R R R R R co R R R c R R R R R R R R R R a a a a a a a a a a a a a a a a a a a a a a a a Lincolnton WWTP NC0025496 LO South Fork Catawba River N CO O (T N CO Facility Name WWTP/WTP Class NPDES Permit ca 0 Flow, Qw (MGD) Receiving Stream HUG Number Stream Class ❑� Apply WS Hardness WQC <1< JIJ E E I (010 "I°) co EIE N I N Effluent Hardness Upstream Hardness N 0 0 0) R R 0 0 0 J a 0 O Effluent Hard: 0 value > 100 mg/L Effluent Hard Avg = 37.61 mg/L i COOF-CrNO • M O1 N O v- ia; COO crctOIO 0Oh OM> = MODMhh O1 O h h O V% 03 ?n 00 MN,-3: ~ y h 2 haaa7g2 ,r CU 00 E. o U • II U (r) c i_. 'a Z_ c O d U a in a `>++ Q N O o 3 in M 10 O O G 0 a x x 1)) 0') C2 Q a re i 0 a) = at L O • O o CD CD CDL s oti0000... N o m O o 0 0 3 O N h Nr 0 O a)M co h iO Q) II II II II II I-. E 4v 4v 4v 4v 4v h cA O O O Oa d og r on d RECOMMENDED ACTION No RP, Predicted Max < 50 % of Allowable Cw. All values reported non -detect < 10 ug/L - No Monitoring required, other than pollutant scan (PS) No - RP, Predicted Max < 50 % of Allowable Cw - All values in limited dataset reported non -detect - No Monitoring required, other than PS. No RP, Predicted Max < 50 % of Allowable Cw - All values reported non -detect < 1 ug/L - No Monitoring required, other than PS. No - RP, Predicted Max < 50 % of Allowable Cw Limited dataset. No Monitoring required, other than PS. No - RP, Predicted Max < 50 % of Allowable Cw - No Monitoring required, other than PS. See Chromium, Total See Chromium, Total a: No monitoring required if all Total Chromium samples are < 5 pg/L or Pred. max for Total Cr is < allowable Cw for Cr VI. Tot Cr value(s) >_ 5 but < Cr VI Allowable Cw No RP ,Predicted Max < 50 % of Allowable Cw No I REASONABLE POTENTIAL RESULTS Tl # Det. Max Pred Cw Allowable Cw Acute (FW): 4,286.5 Chronic (FW): 2,279.0 Max MDL = 10 Chronic (HH): 93- 1.7 Max MDL = 10 Acute: 819.48 - Chronic: 98.76 Max MDL = 20 Acute: 40.843 - Chronic: 8.962 Max MDL = 1 Acute: NO WQS - Chronic: 3,798.4 No value > Allowable Cw Acute: NO WQS - Chronic: 10,806.9 No value > Allowable Cw Acute: 11,410.7 Chronic: 1,7- 88.8 Acute: 201.7 - Chronic: 167.1 kIlowable Cw Max reported value = 6 Acute: 132.02 Chronic: 119.73 h C. h wn q O 25.90 C.V. (default) NO DETECTS 0.745 NO DETECTS 272.8 C.V. (default) 42.0 C.V. (default) z 6 '< v N z 9� "' Al O O 01 4 0 Note: n < 9 Limited data set O 01 1 1 Note: n < 9 Limited data set 3 2 Note: n < 9 Limited data set O O o O Tot Cr value 19 4 01 S11Nn t) t) 7bd NC STANDARDS OR EPA CRITERIA Chronic Applied Acute Standard 150 FW(7Q10s) 340 10 HH/WS(Qavg) 6.5 FW(7Q10s) 65 0.5899 FW(7Q10s) 3.2396 250 WS(7Q10s) (Za0£)V 00£ 117.7325 FW(7Q10s) 905.0818 11 FW(7Q10s) 16 7.8806 FW(7Q10s) 10.4720 U V z z z z z z z z PARAMETER Arsenic Arsenic E .2 Cadmium Chlorides Total Phenolic Compounds Chromium III Chromium VI Chromium, Total Copper m 0 M 0 a p o o2 73 %.15 O a 'Monitoring required, other than PS. No - RP , Predicted Max < 50 % of Allowable Cw No Monitoring required, other than PS. No - RP. All values reported non -detect. Predicted Max < 50 % of Allowable Cw - No Monitoring required, other than PS. Se- e Mercury WQBEL/TBEL evaluation. MMP will continue to be required in this permit cycle. No - RP. Predicted Max < 50 % of Allowable Cw - No Monitoring required, other than PS. No RP. Predicted Max < 50 % of Allowable Cw - No Monitoring required other than PS. No RP. All values reported non -detect < 10 ug/L - No Monitoring required other than PS All values reported non -detect < 1 ug/L. Predicted Max > 50% of Allowable Cw - continue quarterly monitoring. No RP, Predicted Max < 50 % of Allowable Cw - No Monitoring required other than PS No RP, Predicted Max < 50 % of Allowable Cw - No Monitoring required other than PS Predic ted of AllowbleaCwC - ontinue quarterly monitoring RP. Limited dataset. Predicted M>_ax Allowable Cw - Quarterly monitoring required 'No value > Allowable Cw Acute: 277.4 - Chronic: 76.0 No value > Allowable Cw Acute: 951.694 - Chronic: 44.694 Max MDL =10 Acute: NO WQS - Chronic: 182.3 No value > Allowable Cw Acute: NO WQS - Chronic: 2,431.0 Max MDL = 1 Acute (FW): 4,226.1 Chronic (FW): 565.7 Max MDL =1 Chronic (WS): 379.8 Max MDL = 1 Acute: 706.0 - Chronic: 76.0 Max MDL = 10 Acute: 3.737 Chronic: 0.912 Max MDL = 1 Acute: 1,584.8 - Chronic: 1,925.5 No value > Allowable Cw Acute: NO WQS - Chronic: 5589.954 No value > Allowable Cw Acute: NO WQS - Chronic: 85.08387 No value > Allowable Cw Acute: NO WQS - Chronic: 74.53272 No value > Allowable Cw I Acute: NO WQS I O 6.000 NO DETECTS M 0.5 NO DETECTS ti U V1 6-1 5.0 NO DETECTS 0.500 NO DETECTS r 75.00000 C.V. (default) 42.84000 75.00000 C.V. (default) o a, - a, O a, O a, O a, O o - a, 3 2 Note: n < 9 Limited data set M o 3 1 Note: n < 9 Limited data set t t o?- o? t t t o? o? t v? o 5 FW(7Q10s) 22 2.9416 FW(7Q10s) 75.4871 12 FW(7Q10s) 160 WS(7Q10s) 37.2313 FW(7Q10s) 335.2087 25.0000 WS(7Q10s) 5 FW(7Q10s) 56 0.06 FW(7Q10s) 0.2964 126.7335 FW(7Q10s) 125.7052 60 WS(Qavg) 5.6 WS(7Q10s) te 3 0 0 0 0 0 0 0 0 0 0 U Z U Cyanide y _1Z Mercury Molybdenum U U Z Selenium G f/1 U _ N Chloroform >. CO E •_ Q Chlorodibromomethane Outfal 1001 Allowable Cw Bis (2-Ethylhexyl)`Phthalate Date: 6/17/2021 Dissolved to Total Metal Calculator ryV 0 V 6 2 F E E E In accordance with Federal Regul =Q� 8 8 UI E E1 o m?ECl CEO U o E o E E .7 Q O W rs to PERCS Branch to ma COMMENTS (identay parame z U 8 z co 8 E E E U E E t E E E z E N 2 N Dissolved to Total Metal Calculator Do NOT enter any data directly into this spreadsheet L. co L. co E 0 REASONABLE POTENTIAL ANALYSIS H1 Effluent Hardness Date Data BDL=1/2DL 1 12/8/2016 50.2 50.2 2 3/9/2017 94 94 3 6/8/2017 43.5 43.5 4 9/14/2017 34.1 34.1 5 12/7/2017 29.8 29.8 6 3/8/2018 34.2 34.2 7 6/7/2018 40.3 40.3 8 9/27/2018 25.3 25.3 9 12/20/2018 23.8 23.8 10 3/21/2019 43.9 43.9 11 6/6/2019 34.8 34.8 12 9/12/2019 34.7 34.7 13 12/5/2019 29.5 29.5 14 3/12/2020 30.5 30.5 15 6/11/2020 28.9 28.9 16 9/17/2020 26.4 26.4 17 12/10/2020 24.8 24.8 18 3/11/2021 48.3 48.3 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 Results Std Dev. Mean C.V. n 10th Per value Average Value Max. Value Use "PASTE SPECIAL. Values.' then "COPY" . Maximum data points = 58 H2 Upstream Hardness 16.1966 37.6111 0.4306 18 25.15 mg/L 37.61 mg/L 94.00 mg/L Date Data BDL=1/2DL 1 12/8/2016 87.5 87.5 2 3/9/2017 29.4 29.4 3 6/8/2017 19 19 4 9/14/2017 10.6 10.6 5 12/7/2017 15.2 15.2 6 3/8/2018 14.2 14.2 7 6/7/2018 17.4 17.4 8 9/27/2018 7.96 7.96 9 12/20/2018 5.65 5.65 10 3/21/2019 19.6 19.6 11 6/6/2019 17.1 17.1 12 9/12/2019 20.9 20.9 13 12/5/2019 9.13 9.13 14 3/12/2020 14.6 14.6 15 6/11/2020 13.8 13.8 16 9/17/2020 11.8 11.8 17 12/10/2020 10.8 10.8 18 3/11/2021 18.2 18.2 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 Results Std Dev. Mean C.V. n 10th Per value Average Value Max. Value Use "PASTE SPECIAL. Values.' then "COPY" . Maximum data points = 58 17.9578 19.0467 0.9428 18 8.78 mg/L 19.05 mg/L 87.50 mg/L -7- 25496 RPA 3.5, data 6/17/2021 REASONABLE POTENTIAL ANALYSIS Par01 & Par02 Arsenic Date Data BDL=1/2DL Results 1 10/5/2016 < 10 5 Std Dev. 2 12/8/2016 < 10 5 Mean 3 3/9/2017 < 10 5 C.V. 4 6/8/2017 < 10 5 n 5 9/14/2017 < 10 5 6 12/7/2017 < 10 5 Mult Factor = 7 3/8/2018 < 10 5 Max. Value 8 6/7/2018 < 10 5 Max. Pred Cw 9 9/27/2018 < 10 5 10 12/20/2018 < 10 5 11 3/21/2019 < 10 5 12 6/6/2019 < 10 5 13 9/12/2019 < 10 5 14 12/5/2019 < 10 5 15 3/12/2020 < 10 5 16 6/11/2020 < 10 5 17 9/17/2020 < 10 5 18 12/10/2020 < 10 5 19 3/11/2021 < 10 5 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 Use "PASTE SPECIAL. Values" then "COPY" . Maxim um data points = 58 0.0000 5.0000 0.0000 19 1.00 5.0 ug/L 5.0 ug/L -8- 25496 RPA 3.5, data 6/17/2021 REASONABLE POTENTIAL ANALYSIS Par03 Beryllium Date Data BDL=1/2DL Results 1 9/14/2017 < 20 10 Std Dev. 2 12/20/2018 < 1 0.5 Mean 3 3/21/2019 < 1 0.5 C.V. (default) 4 12/10/2020 < 1 0.5 n 5 6 Mult Factor = 7 Max. Value 8 Max. Pred Cw 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 Use "PASTE SPECIAL. Values.' then "COPY" . Maximum data points = 58 Par04 Cadmium 4.7500 2.8750 0.6000 4 2.59 10.00 ug/L 25.90 ug/L Date Data BDL=1/2DL Results 1 10/5/2016 < 0.2 0.1 Std Dev. 2 12/8/2016 < 0.2 0.1 Mean 3 3/9/2017 < 0.2 0.1 C.V. 4 6/8/2017 < 0.2 0.1 n 5 9/14/2017 < 0.2 0.1 6 12/7/2017 < 0.2 0.1 Mult Factor = 7 3/8/2018 < 0.2 0.1 Max. Value 8 6/7/2018 < 0.2 0.1 Max. Pred Cw 9 9/27/2018 < 0.2 0.1 10 12/20/2018 < 0.2 0.1 11 3/21/2019 < 0.2 0.1 12 6/6/2019 < 0.2 0.1 13 9/12/2019 < 0.2 0.1 14 12/5/2019 < 0.2 0.1 15 3/12/2020 < 0.2 0.1 16 6/11/2020 < 0.2 0.1 17 9/17/2020 < 0.2 0.1 18 12/10/2020 < 0.2 0.1 19 3/11/2021 < 1 0.5 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 Use "PASTE SPECIAL. Values.' then "COPY" . Maximum data points = 58 0.0918 0.1211 0.7581 19 1.49 0.500 ug/L 0.745 ug/L -9- 25496 RPA 3.5, data 6/17/2021 REASONABLE POTENTIAL ANALYSIS Par05 Chlorides Use "PASTE SPECIAL - Values.' then "COPY" . Maxim um data points = 58 Date Data BDL=1/2DL Results 1 4/4/2018 44 44 Std Dev. N/A 2 Mean 44.0 3 C.V. (default) 0.6000 4 n 1 5 6 Mult Factor = 6.2 7 Max. Value 44.0 mg/L 8 Max. Pred Cw 272.8 mg/L 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 Par06 Use "PASTE SF Values" then "C Maximum data = 58 Date Data BDL=1/2DL Results 1 Std Dev. NO DATA 2 Mean NO DATA 3 C.V. NO DATA 4 n 0 5 6 Mult Factor = N/A 7 Max. Value N/A 8 Max. Pred Cw N/A 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 Chlorinated Phenolic Compounds -10- 25496 RPA 3.5, data 6/17/2021 REASONABLE POTENTIAL ANALYSIS 'ECIAL. :O PY" . points Par07 Total Phenolic Compounds Date Data BDL=1/2DL Results 1 9/14/2016 6 6 Std Dev. 3.7815 2 10/5/2016 7 7 Mean 7.4000 3 12/20/2018 < 10 5 C.V. (default) 0.6000 4 3/21/2019 14 14 n 5 5 12/10/2020 < 10 5 6 Mult Factor = ug/L 7 Max. Value ug/L 8 Max. Pred Cw 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 Use "PASTE SPECIAL. Values" then "COPY" . Maxim um data points = 58 3.00 14.0 ug/L 42.0 ug/L Par10 Use "PASTE SF Chromium, Total Values" then "C Maximum data = 58 Date Data BDL=1/2DL Results 1 10/5/2016 1 1 Std Dev. 1.3074 2 12/8/2016 < 1 0.5 Mean 0.9147 3 3/9/2017 6 6 C.V. 1.4292 4 6/8/2017 < 1 0.5 n 19 5 9/14/2017 < 1 0.5 6 12/7/2017 < 1 0.5 Mult Factor = 1.86 7 3/8/2018 < 1 0.5 Max. Value 6.0 8 6/7/2018 < 1 0.5 Max. Pred Cw 11.2 9 9/27/2018 < 1 0.5 10 12/20/2018 < 1 0.5 11 3/21/2019 < 1 0.5 12 6/6/2019 < 1 0.5 13 9/12/2019 < 1 0.5 14 12/5/2019 < 1 0.5 15 3/12/2020 < 1 0.5 16 6/11/2020 < 1 0.5 17 9/17/2020 < 1 0.5 18 12/10/2020 < 1 0.5 19 3/11/2021 2.38 2.38 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 -11- 25496 RPA 3.5, data 6/17/2021 REASONABLE POTENTIAL ANALYSIS 'ECIAL. :O PY" . points Pall Copper Date Data BDL=1/2DL Results 1 10/5/2016 6 6 Std Dev. 2 12/8/2016 < 1 0.5 Mean 3 3/9/2017 26 26 C.V. 4 6/8/2017 9 9 n 5 9/14/2017 2 2 6 12/7/2017 14 14 Mult Factor = pg/L 7 3/8/2018 11 11 Max. Value pg/L 8 6/7/2018 10 10 Max. Pred Cw 9 9/27/2018 33 33 10 12/20/2018 8 8 11 3/21/2019 3 3 12 6/6/2019 < 1 0.5 13 9/12/2019 11 11 14 12/5/2019 < 1 0.5 15 3/12/2020 < 1 0.5 16 6/11/2020 3 3 17 9/17/2020 1 1 18 12/10/2020 3 3 19 3/11/2021 2.89 2.89 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 Use "PASTE SPECIAL. Values" then "COPY" . Maxim um data points = 58 Par12 Cyanide 8.8834 7.6258 1.1649 19 1.73 33.00 ug/L 57.09 ug/L Use "PASTE SF Values.' then "C Maximum data = 58 Date Data BDL=1/2DL Results 1 10/5/2016 < 5 5 Std Dev. 0.0000 2 12/8/2016 < 5 5 Mean 5.00 3 3/9/2017 < 5 5 C.V. 0.0000 4 6/8/2017 < 5 5 n 19 5 9/14/2017 < 5 5 6 12/7/2017 < 5 5 Mult Factor = 1.00 7 3/8/2018 < 5 5 Max. Value 5.0 8 6/7/2018 < 5 5 Max. Pred Cw 5.0 9 9/27/2018 < 5 5 10 12/20/2018 < 5 5 11 3/21/2019 5 5 12 6/6/2019 < 5 5 13 9/12/2019 < 5 5 14 12/5/2019 < 5 5 15 3/12/2020 < 5 5 16 6/11/2020 5 5 17 9/17/2020 6 5 18 12/10/2020 5 5 19 3/11/2021 < 5 5 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 -12- 25496 RPA 3.5, data 6/17/2021 REASONABLE POTENTIAL ANALYSIS 'ECIAL. :O PY" . points Par14 Lead Date BDL=1/2DL Results 1 10/5/2016 < 10.00 5 Std Dev. 2 12/8/2016 < 10.00 5 Mean 3 3/9/2017 < 10.00 5 C.V. 4 6/8/2017 < 10.00 5 n 5 9/14/2017 < 10.00 5 6 12/7/2017 < 10.00 5 Mult Factor = ug/L 7 3/8/2018 < 10.00 5 Max. Value ug/L 8 6/7/2018 < 10.00 5 Max. Pred Cw 9 9/27/2018 < 10.00 5 10 12/20/2018 < 10.00 5 11 3/21/2019 < 10.00 5 12 6/6/2019 < 1.00 0.5 13 9/12/2019 < 10.00 5 14 12/5/2019 < 10.00 5 15 3/12/2020 < 10.00 5 16 6/11/2020 < 10.00 5 17 9/17/2020 < 10.00 5 18 12/10/2020 < 10.00 5 19 3/11/2021 < 1.00 0.5 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 Use "PASTE SPECIAL. Values" then "COPY" . Maximum data points = 58 Par15 1.4189 4.5263 0.3135 19 1.20 5.000 ug/L 6.000 ug/L Date Data 10/5/2016 1.44 12/8/2016 3.3 3/9/2017 5.98 6/8/2017 1.7 9/14/2017 1.86 12/7/2017 3 3/8/2018 6.1 6/7/2018 3.57 9/27/2018 1.31 12/20/2018 2 3/21/2019 3.18 6/6/2019 11.45 9/12/2019 2.13 12/5/2019 2.15 3/12/2020 1.72 6/11/2020 3.06 9/17/2020 2.28 12/10/2020 1.5 3/11/2021 1.24 Use "PASTE SF Values" then "C Maximum data = 58 BDL=1/2DL Results 1.44 Std Dev. 2.4541 3.3 Mean 3.1037 5.98 C.V. 0.7907 1.7 n 19 1.86 3 Mult Factor = 1.51 6.1 Max. Value 11.5 3.57 Max. Pred Cw 17.3 1.31 2 3.18 11.45 2.13 2.15 1.72 3.06 2.28 1.5 1.24 Mercu ry -13- 25496 RPA 3.5, data 6/17/2021 REASONABLE POTENTIAL ANALYSIS 'ECIAL. :O PY" . points Par16 Molybdenum Date Data BDL=1/2DL Results 1 10/5/2016 < 1 0.5 Std Dev. 2 12/8/2016 < 1 0.5 Mean 3 3/9/2017 < 1 0.5 C.V. 4 6/8/2017 < 1 0.5 n 5 9/14/2017 < 1 0.5 6 12/7/2017 < 1 0.5 Mult Factor = ng/L 7 3/8/2018 < 1 0.5 Max. Value ng/L 8 6/7/2018 < 1 0.5 Max. Pred Cw 9 9/27/2018 < 1 0.5 10 12/20/2018 < 1 0.5 11 3/21/2019 < 1 0.5 12 6/6/2019 < 1 0.5 13 9/12/2019 < 1 0.5 14 12/5/2019 < 1 0.5 15 3/12/2020 < 1 0.5 16 6/11/2020 < 1 0.5 17 9/17/2020 < 1 0.5 18 12/10/2020 < 1 0.5 19 3/11/2021 < 1 0.5 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 Use "PASTE SPECIAL. Par17 & Par18 Values" then "COPY" . Maxim um data points = 58 Nickel 0.0000 0.5000 0.0000 19 1.00 0.5 ug/L 0.5 ug/L Date Data BDL=1/2DL Results 1 10/5/2016 < 1 0.5 Std Dev. 2 12/8/2016 < 1 0.5 Mean 3 3/9/2017 < 1 0.5 C.V. 4 6/8/2017 < 1 0.5 n 5 9/14/2017 < 1 0.5 6 12/7/2017 < 1 0.5 Mult Factor = 7 3/8/2018 < 1 0.5 Max. Value 8 6/7/2018 < 1 0.5 Max. Pred Cw 9 9/27/2018 < 1 0.5 10 12/20/2018 < 1 0.5 11 3/21/2019 < 1 0.5 12 6/6/2019 < 1 0.5 13 9/12/2019 < 1 0.5 14 12/5/2019 < 1 0.5 15 3/12/2020 < 1 0.5 16 6/11/2020 < 1 0.5 17 9/17/2020 < 1 0.5 18 12/10/2020 < 1 0.5 19 3/11/2021 < 1 0.5 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 -14- 25496 RPA 3.5, data 6/17/2021 REASONABLE POTENTIAL ANALYSIS Use"PASTE Par19 SPECIAL -Values" then "COPY" . Maximum data points = 58 Selenium 0.0000 0.5000 0.0000 19 1.00 0.5 pg/L 0.5 pg/L Date Data BDL=1/2DL Results 1 10/5/2016 < 10.00 5 Std Dev. 2 12/8/2016 < 10.00 5 Mean 3 3/9/2017 < 10.00 5 C.V. 4 6/8/2017 < 10.00 5 n 5 9/14/2017 < 10.00 5 6 12/7/2017 < 10.00 5 Mult Factor = 7 3/8/2018 < 10.00 5 Max. Value 8 6/7/2018 < 10.00 5 Max. Pred Cw 9 9/27/2018 < 10.00 5 10 12/20/2018 < 10.00 5 11 3/21/2019 < 10.00 5 12 6/6/2019 < 10.00 5 13 9/12/2019 < 10.00 5 14 12/5/2019 < 10.00 5 15 3/12/2020 < 10.00 5 16 6/11/2020 < 10.00 5 17 9/17/2020 < 10.00 5 18 12/10/2020 < 10.00 5 19 3/11/2021 < 10.00 5 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 Use"PASTE SPECIAL -Values then "COPY" . Maximum data points = 58 0.0000 5.0000 0.0000 19 1.00 5.0 ug/L 5.0 ug/L Par20 Silver Date Data BDL=1/2DL Results 1 9/14/2016 < 1 0.5 Std Dev. 2 10/5/2016 < 1 0.5 Mean 3 12/8/2016 < 1 0.5 C.V. 4 3/9/2017 < 1 0.5 n 5 6/8/2017 < 1 0.5 6 9/14/2017 < 1 0.5 Mult Factor = 7 12/7/2017 < 1 0.5 Max. Value 8 3/8/2018 < 1 0.5 Max. Pred Cw 9 6/7/2018 < 1 0.5 10 9/27/2018 < 1 0.5 11 12/20/2018 < 1 0.5 12 3/21/2019 < 1 0.5 13 6/6/2019 < 1 0.5 14 9/12/2019 < 1 0.5 15 12/5/2019 < 1 0.5 16 3/12/2020 < 1 0.5 17 6/11/2020 < 1 0.5 18 9/17/2020 < 1 0.5 19 12/10/2020 < 1 0.5 20 3/11/2021 < 1 0.5 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 -15- 25496 RPA 3.5, data 6/17/2021 REASONABLE POTENTIAL ANALYSIS Use "PASTE SPECIAL- Par21 Values" then "COPY" . Maximum data points = 58 Zinc 0.0000 0.5000 0.0000 20 1.00 0.500 ug/L 0.500 ug/L Date Data BDL=1/2DL 1 10/5/2016 27 27 2 12/8/2016 89 89 3 3/9/2017 1 1 4 6/8/2017 94 94 5 9/14/2017 83 83 6 12/7/2017 1 1 7 3/8/2018 56 56 8 6/7/2018 195 195 9 9/27/2018 1 1 10 12/20/2018 1 1 11 3/21/2019 20 20 12 6/6/2019 1 1 13 9/12/2019 380 380 14 12/5/2019 14 14 15 3/12/2020 58 58 16 6/11/2020 86 86 17 9/17/2020 57 57 18 12/10/2020 24 24 19 3/11/2021 40.5 40.5 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 Results Std Dev. Mean C.V. n Mult Factor = Max. Value Max. Pred Cw Use "PASTE SPECIAL. Values.' then "COPY" . Maximum data points = 58 90.4710 64.6579 1.3992 19 1.85 380.0 ug/L 703.0 ug/L Par22 Chloroform Date Data BDL=1/2DL 1 9/14/2017 22.5 22.5 2 12/20/2018 10.2 10.2 3 3/21/2019 < 50 25 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 -16- 25496 RPA 3.5, data 6/17/2021 REASONABLE POTENTIAL ANALYSIS Results Std Dev. Mean C.V. (default) n Mult Factor = Max. Value Max. Pred Cw Use "PASTE SPECIAL - Values" then "COPY" . Maxim um data points - 58 7.9223 19.2333 0.6000 3 3.00 25.000000 pg/L 75.000000 pg/L Par23 Antimony Date Data BDL=1/2DL Results 1 9/14/2016 < 10 5 Std Dev. 2 10/5/2016 < 10 5 Mean 3 12/8/2016 < 10 5 C.V. 4 3/9/2017 < 10 5 n 5 6/8/2017 17 17 6 9/14/2017 28 28 Mult Factor = 7 12/7/2017 < 10 5 Max. Value 8 3/8/2018 < 10 5 Max. Pred Cw 9 6/7/2018 < 10 5 10 9/27/2018 < 10 5 11 12/20/2018 < 10 5 12 3/21/2019 < 10 5 13 6/6/2019 < 10 5 14 9/12/2019 < 10 5 15 12/5/2019 < 10 5 16 3/12/2020 < 10 5 17 6/11/2020 < 10 5 18 9/17/2020 < 10 5 19 12/10/2020 < 10 5 20 3/11/2021 1.61 1.61 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 Use "PASTE SPECIAL -Values" then "COPY" . Maxim um data points = 58 5.7790 6.5805 0.8782 20 1.53 28.000000 pg/L 42.840000 pg/L Par24 Date Da 1 9/14/2017 2 12/20/2018 < 3 3/21/2019 < 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 -17- 25496 RPA 3.5, data 6/17/2021 REASONABLE POTENTIAL ANALYSIS Chlorodibromomethane to BDL=1/2DL Results 9.92 Std Dev. 2.5 Mean 25 C.V. (default) n Mult Factor = Max. Value Max. Pred Cw 9.92 5 50 Use "PASTE SPECIAL - Values" then "COPY" . Maximum data points - 58 Par25 Bis (2-Ethylhexyl) Phthalate 11.4653 12.4733 0.6000 3 3.00 25.000000 pg/L 75.000000 pg/L Date Data BDL=1/2DL Results 1 12/8/2016 < 11.3 5.65 Std Dev. 2 3/9/2017 3.57 3.57 Mean 3 6/19/2017 < 4.3 2.15 C.V. 4 9/14/2017 < 1.2 0.6 n 5 12/7/2017 < 10.4 5.2 6 12/29/2017 < 5.8 2.9 Mult Factor = 7 3/28/2018 < 5.6 2.8 Max. Value 8 6/8/2018 < 110 55 Max. Pred Cw 9 9/27/2018 5 5 10 12/20/2018 < 5.6 2.8 11 3/21/2019 < 10 5 12 6/6/2019 < 162 81 13 9/12/2019 32.3 32.3 14 12/5/2019 < 16 8 15 3/12/2020 < 32.3 16.15 16 6/19/2020 < 10 5 17 9/17/2020 < 80 40 18 12/10/2020 < 152 76 19 3/11/2021 < 83.3 41.65 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 Use "PASTE SPECIAL. Values" then "COPY" . Maximum data points = 58 26.0381 20.5668 1.2660 19 1.78 81.000000 pg/L 144.180000 pg/L -18- 25496 RPA 3.5, data 6/17/2021 Metal Translator /95% Confidence Usi 95% Probabilit NaN Freshwate MAXIMUM DATA POINTS = 58 REQUIRED DATA ENTRY Table 2. Parameters of Concern 0 E 4- 0 d 0 L a d -71 CCI co J 0 a O U O C9 E co ❑ CHECK IF HQW OR ORW WQS J_ O 7 J co 7 J coO 7 J_ 7 —IJ CDC E coO 7 J_ 7 J O 7 J_ O M J_ O M J co 7 J co 7 J_ 3) 7 J_ 0 7 J_ a) C J_ O 7 J_ O 1 J_ O 1 J coO 7 J_ 7 J O 7 J_ O M J_ O 1 J_ O 1 O LJ? O 340 Q Z CO O 3.2396 905.0818 CO Q Z 10.4720 N N 75.4871 335.2087 Q Z CO 0.2964 125.7052 u CO 1 2 u LL Q Q u u u u u u uU_ U_ u u u 150 10 LO Cq 0.5899 O N 300 117.7325 Q Z 7.8806 LO C. 0 0 a- 2.9416 ,H CO CO N N- CO 25.0000 Ln O 0 126.7335 cUp u'i 0.8 U U 0 Z 0 Z 0 Z 0 Z 0 Z C.) Z C.) Z 0 Z C.) Z 0 Z 0 Z 0 Z C.) Z 0 Z 0 Z 0 Z C.) Z C.) Z 0 Z U U Z U Aquactic Life Human Health Water Supply Aquatic Life Aquatic Life Water Supply Water Supply Aquatic Life Aquatic Life Aquatic Life Aquatic Life Aquatic Life Aquatic Life Aquatic Life Aquatic Life Aquatic Life Water Supply Aquatic Life Water Supply Aquatic Life Aquatic Life Aquatic Life Water Supply Water Supply Water Supply U C VOA) Q U C N Q E m Cadmium N U O 0 Chlorinated Phenolic Compounds Total Phenolic Compounds Chromium III Chromium VI Chromium, Total Copper Cyanide Fluoride Lead Mercury E 2 O Q o Nickel Nickel E C N— v) > C N Chloroform c E Q Chlorodibromomethane N el LC)f- co O O N M 7 u) W N- CO 0 0 Cs/) 2 2 0 0 0 0 0 0 0 N N N N N R R 030303030303Rica c f0 c c6 R R R R R R R R R R a a a a a a a a a a a a a a a a a a a a a a a a Lincolnton WWTP NC0025496 LO South Fork Catawba River CO O (T N CO Facility Name WWTP/WTP Class NPDES Permit cc 0 Flow, Qw (MGD) Receiving Stream HUG Number Stream Class ❑� Apply WS Hardness WQC <1< JIJ cnrEE I C0IO "I°) co EIE N I N Effluent Hardness Upstream Hardness N 0 0 0) R R 0 0 0 J a 0 O Effluent Hard: 0 value > 100 mg/L Effluent Hard Avg = 37.61 mg/L (22 IOOCCD10a- W 01 et O O et O MOC1OIh (a Net 0Io0 a- O h O GO > (/) N CO IO a- IO — = h O et et h co M h O M N ~ y h r"CU oo E. o U II U (� c F, MS Z_ c O d U a In p N O o in M O O G U a X x 1)) a) c2 Q a Ce i 0 a) = L cc O LL O O O O L s Or-OOOO., N O m O o 0 0 3 N h N an O O Lt CDac0h OQ) (...7 u� u� u� u� u� h cA v d a 8 8 .3 N Q' bA O O O O. 3aaaaMa og r RECOMMENDED ACTION No RP, Predicted Max < 50 % of Allowable Cw. All values reported non -detect < 10 ug/L - No Monitoring required, other than pollutant scan (PS) No - RP, Predicted Max < 50 % of Allowable Cw - All values in limited dataset reported non -detect - No Monitoring required, other than PS. 76 RP, Predicted 1ZZ < 50 % of Allowable Cw - AI I values reported non -detect < 1 ug/L - No Monitoring required, other than PS. No - RP, Predicted Max < 50 % of Allowable Cw Limited dataset. No Monitoring required, other than PS. No - RP, Predicted Max < 50 % of Allowable Cw - No Monitoring required, other than PS. See Chromium, Total See Chromium, Total a: No monitoring required if all Total Chromium samples are < 5 pg/L or Pred. max for Total Cr is < allowable Cw for Cr VI. Tot Cr value(s) >_ 5 but < Cr VI Allowable Cw Predicted Max >_ 50 % of Allowable Cw - Quarterly REASONABLE POTENTIAL RESULTS Tl # Det. Max Pred Cw Allowable Cw Acute (FW): 3,409.5 Chronic (FW): 1,805.9 Max MDL =10____ ____ Chronic (HH): 726.8 Max MDL = 10 Acute: 651.82 - Chronic: 78.26 Max MDL = 20 Acute: 32.487 - Chronic: 7.102 Max MDL = 1 Acute: NO WQS - Chronic: 3,009.9 No value > Allowable Cw Acute: NO WQS - Chronic: 8,472.0 No value > Allowable Cw Acute: 9,076.1 Chronic: 1,417.4 Acute: 160.4 - Chronic: 132.4 kIlowable Cw Max reported value = 6 Acute: 105.01 Chronic: 94.88 h O E. krn q O 25.90 C.V. (default) NO DETECTS 0.745 NO DETECTS 272.8 C.V. (default) 42.0 C.V. (default) z 6 '< v N z 9-, "' Al O O 4 0 Note: n < 9 Limited data set O 1 1 Note: n < 9 Limited data set 3 2 Note: n < 9 Limited data set O o Tot Cr value 19 4 slum t t t t t t 7bd NC STANDARDS OR EPA CRITERIA Chronic Applied Acute Standard 150 FW(7Q10s) 340 10 HH/WS(Qavg) 6.5 FW(7Q10s) 65 0.5899 FW(7Q10s) 3.2396 250 WS(7Q10s) (Za0£)V 00£ 117.7325 FW(7Q10s) 905.0818 11 FW(7Q10s) 16 7.8806 FW(7Q10s) 10.4720 w a. U V 0 z z z z z 0 z PARAMETER Arsenic Arsenic E .2 Cadmium Chlorides Total Phenolic Compounds Chromium III Chromium VI Chromium, Total Copper 'monitoring required No RP , Predicted Max < 50 % of Allowable Cw No Monitoring required, other than PS. No - RP. All values reported non -detect. Predicted Max < 50% of Allowable Cw - No Monitoring required, other than PS. Se- e Mercury WQBEL/TBEL evaluation. MMP will continue to be required in this permit cycle. No - RP. Predicted Max < 50% of Allowable Cw - No Monitoring required, other than PS. No RP. Predicted Max < 50% of Allowable Cw - No Monitoring required other than PS. No RP. All values reported non -detect < 10 ug/L. Predicted Max < 50% of Allowable Cw - No Monitoring required other than PS All values reported non -detect < 1 ug/L, but Predicted Max > 50% of Allowable Cw - Continue quarterly monitoring using method with lowest PQL Predicted Max >_ 50% of Allowable Cw - Quarterly monitoring required No RP, Predicted Max < 50% of Allowable Cw - No Monitoring required other than PS Predic ted of AllowbleaCwC - ontinue quarterly monitoring RP. Limited dataset. Predicted M>_ax Allowable Cw - Quarterly monitoring required INo value > Allowable Cw Acute: 220.6 - Chronic: 60.2 No value > Allowable Cw Acute: 756.981 - Chronic: 35.415 Max MDL=10 Acute: NO WQS - Chronic: 144.5 No value > Allowable Cw Acute: NO WQS - Chronic: 1,926.3 No value > Allowable Cw Acute (FW): 3,361.5 Chronic (FW): 448.2 No value > Allowable Cw Chronic (WS): 301.0 No value > Allowable Cw Acute: 561.6 - Chronic: 60.2 Max MDL = 10 Acute: 2.972 Chronic: 0.722 Max MDL = 1 Acute: 1,260.6 - Chronic: 1,525.8 No value > Allowable Cw Acute: NO WQS - Chronic: 4361.075 No value > Allowable Cw Acute: NO WQS - Chronic: 67.42079 No value > Allowable Cw Acute: NO WQS - Chronic: 58.14767 No value > Allowable Cw I Acute: NO WQS I ,n 6.000 NO DETECTS M --, ^" ci ,-. 5.0 NO DETECTS 0.500 NO DETECTS o O r 75.00000 C.V. (default) 42.84000 75.00000 C.V. (default) a. O a, a, — a, — a, o a, o o a, 3 2 Note: n < 9 Limited data set M o 3 1 Note: n < 9 Limited data set t t o?- o? t t t o? o? t v? o 5 FW(7Q10s) 22 2.9416 FW(7Q10s) 75.4871 12 FW(7Q10s) 160 WS(7Q10s) 37.2313 FW(7Q10s) 335.2087 25.0000 WS(7Q10s) 5 FW(7Q10s) 56 0.06 FW(7Q10s) 0.2964 126.7335 FW(7Q10s) 125.7052 60 WS(Qavg) 5.6 WS(7Q10s) a 3 0 0 0 0 0 0 0 0 0 0 U Z U Cyanide y _1Z Mercury Molybdenum U U Z Selenium G 6 U _E N Chloroform T = O E. Q Chlorodibromomethane O 0 a Outfal 1001 Bis (2-Ethylhexyl) Phthalate Date: 6/17/2021 Dissolved to Total Metal Calculator ryV 0 V 6 2 F E E E In accordance with Federal Regul =Q� 8 8 UI E E1 o m?ECl CEO U o E o E E 27 Q 12 O W rs to PERCS Branch to ma COMMENTS (identay parame z U 8 z co 8 E E E U E E t E E E z E N 2 a N Dissolved to Total Metal Calculator Do NOT enter any data directly into this spreadsheet L. co L. co E 0 Metal Translator /95% Confidence Usi 95% Probabilit NaN Freshwate MAXIMUM DATA POINTS = 58 REQUIRED DATA ENTRY Table 2. Parameters of Concern 0 E 4- 0 d .- 2 a CD CCI J 0 a O 0 u) O E ❑ CHECK IF HQW OR ORW WQS J_ O 7 J co 7 J co 7 J_ O 7 -I CDC G J O) 7 J_ O) 7 J 0 7 J_ 0 1 J_ 0 1 J 0 7 J cc 7 J_ O) 7 J_ O 7 J_ a) C J_ O 7 J_ O 1 J_ O 1 J coO 7 J_ 7 J coO 7 J_ 1 J_ O 1 J_ O 1 O LJ? O 340 Q Z LC) (0 3.2396 905.0818 CO Q Z 10.4720 N N 75.4871 335.2087 Q Z O LC) 0.2964 125.7052 u CO 1 2 uLL Q Q u u u u u u uU_ U_ u u u 150 10 LO CO 0.5899 O N 300 117.7325 Q Z 7.8806 LO 00 0 a- 2.9416 .- CO CO N N- CO 25.0000 c) O 126.7335 8 u'i 0.8 U U 0 Z 0 Z 0 Z 0 Z 0 Z C.) Z C.) Z 0 Z C.) Z 0 Z 0 Z 0 Z C.) Z 0 Z 0 Z 0 Z C.) Z C.) Z 0 Z U U Z U Aquactic Life Human Health Water Supply Aquatic Life Aquatic Life Water Supply Water Supply Aquatic Life Aquatic Life Aquatic Life Aquatic Life Aquatic Life Aquatic Life Aquatic Life Aquatic Life Aquatic Life Water Supply Aquatic Life Water Supply Aquatic Life Aquatic Life Aquatic Life Water Supply Water Supply Water Supply U C Q U c Q E m Cadmium N .c 0 Chlorinated Phenolic Compounds Total Phenolic Compounds Chromium III Chromium VI Chromium, Total Copper Cyanide Fluoride Lead Mercury E 2 O o Nickel Nickel E c v) > c Chloroform c E Q Chlorodibromomethane N M 7 u7 f- co O O N M 7 u7 W N- W Cr) 0 N M 2 2 0 0 0 0 0 0 0 N N N N N R R R R R R R R t6 c cacao) c6 R R R R R R R R R R a a a a a a a a a a a a a a a a a a a a a a a a Lincolnton WWTP > NC0025496 South Fork Catawba River O O O N CO Facility Name WWTP/WTP Class NPDES Permit cc 0 Flow, Qw (MGD) Receiving Stream HUG Number Stream Class ❑� Apply WS Hardness WQC 0) <1< JIJ E E �I(0 (010 "I°) co Effluent Hardness Upstream Hardness N 0 0 0) R N 0 0 0 J a 0 O Effluent Hard: 0 value > 100 mg/L i 01 a- 1.0 OOD CCD _ • O O1 a- • 'Cr CCD O M ) O • NON COO OND V) a- w Ti: 11: I I II II II II r Cai U P. 00 H.:,o o U to Lo U U U II U (� d "0 Z_ c o O d U a u) a `�+ Q N O o 3 in o CO D M St O O G U a x _ in a) ii Q a l6 Ce i U a) = co co t) LL O O O O L s oti0000..... N o m O o 0 0 3 O N N.Nr a) 0 O Li a) CD CO h O Q) 11 11 11 11 11 , I-. Q u� u� u� u� u� h v 8 8 .3 N Q'd oA O O O Oa og r Effluent Hard Avg = 37.61 mg/L I.£ on RECOMMENDED ACTION No RP, Predicted Max < 50 % of Allowable Cw. All values reported non -detect < 10 ug/L - No Monitoring required, other than pollutant scan (PS) No - RP, Predicted Max < 50 % of Allowable Cw - All values in limited dataset reported non -detect - No Monitoring required, other than PS. 76 RP, Predicted 1ZZ < 50 % of Allowable Cw - AI I values reported non -detect < 1 ug/L - No Monitoring required, other than PS. No - RP, Predicted Max < 50 % of Allowable Cw Limited dataset. No Monitoring required, other than PS. No - RP, Predicted Max < 50 % of Allowable Cw - No Monitoring required, other than PS. See Chromium, Total See Chromium, Total a: No monitoring required if all Total Chromium samples are < 5 pg/L or Pred. max for Total Cr is < allowable Cw for Cr VI. Tot Cr value(s) >_ 5 but < Cr VI Allowable Cw FrLIcieTFv17x >_ 50 % of Allowable Cw - Quarterly REASONABLE POTENTIAL RESULTS Tl # Det. Max Pred Cw Allowable Cw Acute (FW): 2,642.1 Chronic (FW): 1,391.9 Max MDL = 10 Chronic (HH): 54- 7.6 Max MDL = 10 Acute: 505.11 - Chronic: 60.32 Max MDL = 20 Acute: 25.175 - Chronic: 5.474 Max MDL = 1 Acute: NO WQS - Chronic: 2,319.9 No value > Allowable Cw Acute: NO WQS - Chronic: 6,429.0 No value > Allowable Cw Acute: 7,033.4 Chronic: 1,0- 92.5 Acute: 124.3 - Chronic: 102.1 kIlowable Cw Max reported value = 6 Acute: 81.38 Chronic: 73.13 h O h krn q O 25.90 C.V. (default) NO DETECTS 0.745 NO DETECTS 272.8 C.V. (default) 42.0 C.V. (default) z 6 .< v N z 9-, "' Al O 0 4 0 Note: n < 9 Limited data set 0 01 1 1 Note: n < 9 Limited data set 3 2 Note: n < 9 Limited data set 0 O 0 O Tot Cr value 19 4 01 slum t t t t t t 7bd NC STANDARDS OR EPA CRITERIA Chronic Applied Acute Standard 150 FW(7010s) 340 10 HH/WS(Qavg) 6.5 FW(7Q10s) 65 0.5899 FW(7Q10s) 3.2396 250 WS(7Q10s) (Za0£)V 00£ 117.7325 FW(7Q10s) 905.0818 11 FW(7Q10s) 16 7.8806 FW(7Q10s) 10.4720 w a. U V 0 z z z z z 0 z PARAMETER Arsenic Arsenic E .2 Cadmium Chlorides Total Phenolic Compounds Chromium III Chromium VI Chromium, Total Copper M a 'Monitoring required No - RP , Predicted Max < 50% of Allowable Cw No Monitoring required, other than PS. No - RP. All values reported non -detect. Predicted Max < 50% of Allowable Cw - No Monitoring required, other than PS. Se- e Mercury WQBEL/TBEL evaluation. MMP will continue to be required in this permit cycle. No - RP. Predicted Max < 50% of Allowable Cw - No Monitoring required, other than PS. No RP. Predicted Max < 50% of Allowable Cw - No Monitoring required other than PS. No RP. All values reported non -detect < 10 ug/L - No Monitoring required other than PS All values reported non -detect < 1 ug/L, but Predicted Max > 50% of Allowable Cw - Continue quarterly monitoring using method with lowest PQL No RP, Predicted Max > 50% of Allowable Cw - Quarterly monitoring required No RP, Predicted Max < 50% of Allowable Cw - No Monitoring required other than PS Predicted Max >_ 50 % of Allowable CwC - ontinue monthly monitoring with limit RP. Limited dataset. Predicted M>_ax Allowable Cw - Quarterly monitoring required INo value > Allowable Cw Acute: 171.0 - Chronic: 46.4 No value > Allowable Cw Acute: 586.608 - Chronic: 27.297 Max MDL=10 Acute: NO WQS - Chronic: 111.4 No value > Allowable Cw Acute: NO WQS - Chronic: 1,484.7 No value > Allowable Cw Acute (FW): 2,604.9 Chronic (FW): 345.5 No value > Allowable Cw Chronic (WS): 232.0 No value > Allowable Cw Acute: 435.2 - Chronic: 46.4 Max MDL = 10 Acute: 2.303 Chronic: 0.557 Max MDL = 1 Acute: 976.9 - Chronic: 1,176.0 No value > Allowable Cw Acute: NO WQS - Chronic: 3285.806 No value > Allowable Cw Acute: NO WQS - Chronic: 51.96559 No value > Allowable Cw Acute: NO WQS - Chronic: 43 81075 No value > Allowable Cw I Acute: NO WQS I 6.000 NO DETECTS M 5.0 NO DETECTS 0.500 NO DETECTS o r 75.00000 C.V. (default) 42.84000 75.00000 C.V. (default) O a, a, — a, — a, o a, o o a, 3 2 Note: n < 9 Limited data set M o 3 1 Note: n < 9 Limited data set t t o?- o? t t t o? o? t v? o 5 FW(7Q10s) 22 2.9416 FW(7Q10s) 75.4871 12 FW(7Q10s) 160 WS(7Q10s) 37.2313 FW(7Q10s) 335.2087 25.0000 WS(7Q10s) 5 FW(7Q10s) 56 0.06 FW(7Q10s) 0.2964 126.7335 FW(7Q10s) 125.7052 60 WS(Qavg) 5.6 WS(7Q10s) a 3 0 0 0 0 0 0 0 0 0 0 U Z U Cyanide y J Mercury Molybdenum U U Z Z Selenium G 6 U _E N Chloroform >. = O E. Q Chlorodibromomethane Allowable Cw Bis (2-Ethylhexyl)`Phthalate Date: 6/17/2021 Dissolved to Total Metal Calculator ryV 0 V 6 2 F E E E In accordance with Federal Regul =Q� 8 8 8 UI E o m?ECl CEO U o E o E E Q Q O W rs to PERCS Branch to ma COMMENTS (identay parame z z U 8 z co 8 E E E U E E t E E E z E N z N Dissolved to Total Metal Calculator Do NOT enter any data directly into this spreadsheet L. co L. co E 0 %-1 N 0 N 0 N LA Lincolnton WWTP NC0025496 r. cc cc 00 N T -1 N N T -1 c-1 N O 4 N m Cr CO %-I l0 00 00 I, Ln N 00 Ln Lf1 c-I l0 c-I 00 l0 N c-1 l0 l0 m N 4 O 4 4 c-1 N CO c-1 m l0 Ln Ol l0 N Ln 00 N N N 00 oo l0 l0 l0 m 00 Ol 00 00 Ol Ol 00 Ol Ol Ol Ol Ol Ol Ol Ol Ol Ol col Ol col Ol Ol Ol Ol Ol Ol Ol Ol Ol Ol Ol Ol 00 00 al Ol al -1 s Ol Ol Ol al cI l W JD 0 ,7>• = (0 o_ , an a) 2 Q a Q a) October-19 November-19 December-19 January-20 February-20 0 N o N S O O O o oN N N N N N c10 Q- 2 , E -a 7 a) ° 2 Q -, an —, = a u Q a) O V) November-20 December-20 January-21 c-I c-I c-I N N N 5.7 co c a 2 m 01 4 c 1 00 01 4 N O c 1 N CO Ln n O Ln I N m CO l0 O h o l0 h co N Ln N co 4 N 01 m l0 O co h o Ln m N 00 O L) T -1 r-1 Ol Ln O m 4 4 0. 00 n 4 Ln 4 N N h: n n n W l0 h: n l0 4 4 l0 00 h: 00 h: l0 n n l0 l0 4 Ol Ol Ol col Ol Ol Ol Ol Ol Ol Ol Ol Ol Ol col Ol Ol Ol Ol Ol Ol Ol Ol Ol Ol Ol Ol Ol Ol Ol D L N N N 00 oo i `� c0-I c�-I i 00 00 i 0000c-1 . I c�-I i i i i i 71 00 00 00 71 i i _a a) s i a) s `� a) E -aE Eco co co c E E co ( a) co co CO CO (1) p o " Q Q aa)) p ° a) Li < aQi p ° Li c„ z o c„ z o c„ C Overall TSS removal rate 0 r. cc cc t C 0 l0 c I m O N m 4 m . 1 4 00 00 I 00 N 4 oo Ol 4 c I c I Ln N l0 4 L) l0 W N N O N oo n I N l0 N Ln O . . . . . . . . . . . . . . . . . . . . . . . . I� n 00 00 00 00 00 00 00 00 00 1� 00 00 00 00 Ol 00 00 00 1� l0 n O N Ol col Ol Ol Ol Ol Ol Ol col Ol Ol Ol Ol col Ol Ol Ol Ol Ol Ol Ol Ol Ol Ol Ol Ol CI Ol c' Ol Ol Ol CI c N c-I c-I ci l I JD = c >. E (0 Q- = tin a) Q iQ a a) October-19 November-19 December-19 January-20 February-20 0 N o 0 0 0 0 o ON - N a) N N fV N a) E co c = E o a) O V) November-20 December-20 January-21 01 N O c 1 Ol Ln r-1 N Ln Ol 4 m l0 Ln % -1 l0 in m Cr) Ln m O 01 O 01 N N 00 Ln l0 N cI N l0 N m N m O 01 O %-1 N n Ol O cI Ol l0 4 n n l0 n n Ln m Cr O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . W Ol Ol W I� n l0 Ln 00 Ol W Ol Ol W 00 W W h: l0 n W 00 W l0 Ln n n l0 l0 l0 m Ol Ol Ol m Ol m Ol Ol m m Ol Ol m Ol m m Ol Ol m m Ol m m Ol m m Ol Ol Ol L 0 n n 00 ia) a) j, ' r�-1 c�-1 c�-1 r�-1 Cr/i a) T-5 CO CO 00 00 07'0 N a) a) j, i` E o E E i" 'Q c= o E E i s 'Q CO c E o E E a u (0 Q 2-,—,= a u> u Q 2 a u> u a) p Li Q a) p o a) Li < a) p o—' Li V) z 0 c„ z 0 cn C Overall CBOD removal rate NH3/TRC WLA Calculations Facility: City of Lincolnton/Lincolnton Wastewater Treatment Plant (WWTP) PermitNo. NC0025496 Prepared By: Diana Yitbarek Enter Design Flow (MGD): Enter s7Q10 (cfs): Enter w7Q10 (cfs): 3.5 77 140 Total Residual Chlorine (TRC) Daily Maximum Limit (ug/I) s7Q10 (CFS) DESIGN FLOW (MGD) DESIGN FLOW (CFS) STREAM STD (UG/L) Upstream Bkgd (ug/I) IWC (%) Allowable Conc. (ug/I) Maintain limit at 28 ug/I Fecal Coliform Monthly Average Limit: (If DF >331; Monitor) (If DF<331; Limit) Dilution Factor (DF) Maintain 200/100 ml MA limit 77 3.5 5.425 17.0 0 6.58 258 Ammonia (Summer) Monthly Average Limit (mg NH3-N/I) s7Q10 (CFS) DESIGN FLOW (MGD) DESIGN FLOW (CFS) STREAM STD (MG/L) Upstream Bkgd (mg/I) IWC (%) Allowable Conc. (mg/I) Maintain limit at 12.0 mg/I Ammonia (Winter) Monthly Average Limit (mg NH3-N/I) w7Q10 (CFS) 200/100mI DESIGN FLOW (MGD) DESIGN FLOW (CFS) STREAM STD (MG/L) 15.19 Upstream Bkgd (mg/I) IWC (%) Allowable Conc. (mg/I) Maintain limit at 12.0 mg/I Total Residual Chlorine 1. Cap Daily Max limit at 28 ug/I to protect for acute toxicity Ammonia (as NH3-N) 1. If Allowable Conc > 35 mg/I, Monitor Only 2. Monthly Avg limit x 3 = Weekly Avg limit (Municipals) 3. Monthly Avg limit x 5 = Daily Max limit (Non-Munis) If the allowable ammonia concentration is > 35 mg/L, no limit shall be imposed 77 3.5 5.425 1.0 0.22 6.58 12.1 140 3.5 5.425 1.8 0.22 3.73 42.6 Fecal Coliform 1. Monthly Avg limit x 2 = 400/100 ml = Weekly Avg limit (Municipals) = Daily Max limit (Non -Muni) NH3/TRC WLA Calculations Facility: City of Lincolnton/Lincolnton Wastewater Treatment Plant (WWTP) PermitNo. NC0025496 Prepared By: Diana Yitbarek Enter Design Flow (MGD): Enter s7Q10 (cfs): Enter w7Q10 (cfs): 4.5 77 140 Total Residual Chlorine (TRC) Daily Maximum Limit (ug/I) s7Q10 (CFS) DESIGN FLOW (MGD) DESIGN FLOW (CFS) STREAM STD (UG/L) Upstream Bkgd (ug/I) IWC (%) Allowable Conc. (ug/I) Maintain limit at 28 ug/I Fecal Coliform Monthly Average Limit: (If DF >331; Monitor) (If DF<331; Limit) Dilution Factor (DF) Maintain 200/100 ml MA limit 77 4.5 6.975 17.0 0 8.31 205 Ammonia (Summer) Monthly Average Limit (mg NH3-N/I) s7Q10 (CFS) DESIGN FLOW (MGD) DESIGN FLOW (CFS) STREAM STD (MG/L) Upstream Bkgd (mg/I) IWC (%) Allowable Conc. (mg/I) Maintain limit at 9.0 mg/I Ammonia (Winter) Monthly Average Limit (mg NH3-N/I) w7Q10 (CFS) 200/100mI DESIGN FLOW (MGD) DESIGN FLOW (CFS) STREAM STD (MG/L) 12.04 Upstream Bkgd (mg/I) IWC (%) Allowable Conc. (mg/I) Maintain limit at 9.0 mg/I Total Residual Chlorine 1. Cap Daily Max limit at 28 ug/I to protect for acute toxicity Ammonia (as NH3-N) 1. If Allowable Conc > 35 mg/I, Monitor Only 2. Monthly Avg limit x 3 = Weekly Avg limit (Municipals) 3. Monthly Avg limit x 5 = Daily Max limit (Non-Munis) If the allowable ammonia concentration is > 35 mg/L, no limit shall be imposed 77 4.5 6.975 1.0 0.22 8.31 9.6 140 4.5 6.975 1.8 0.22 4.75 33.5 Fecal Coliform 1. Monthly Avg limit x 2 = 400/100 ml = Weekly Avg limit (Municipals) = Daily Max limit (Non -Muni) NH3/TRC WLA Calculations Facility: City of Lincolnton/Lincolnton Wastewater Treatment Plant (WWTP) PermitNo. NC0025496 Prepared By: Diana Yitbarek Enter Design Flow (MGD): Enter s7Q10 (cfs): Enter w7Q10 (cfs): 6 77 140 Total Residual Chlorine (TRC) Daily Maximum Limit (ug/I) s7Q10 (CFS) DESIGN FLOW (MGD) DESIGN FLOW (CFS) STREAM STD (UG/L) Upstream Bkgd (ug/I) IWC (%) Allowable Conc. (ug/I) Maintain limit at 28 ug/I Fecal Coliform Monthly Average Limit: (If DF >331; Monitor) (If DF<331; Limit) Dilution Factor (DF) Maintain 200/100 ml MA limit 77 6 9.3 17.0 0 10.78 158 Ammonia (Summer) Monthly Average Limit (mg NH3-N/I) s7Q10 (CFS) DESIGN FLOW (MGD) DESIGN FLOW (CFS) STREAM STD (MG/L) Upstream Bkgd (mg/I) IWC (%) Allowable Conc. (mg/I) Maintain limit at 7.0 mg/I Ammonia (Winter) Monthly Average Limit (mg NH3-N/I) w7Q10 (CFS) 200/100mI DESIGN FLOW (MGD) DESIGN FLOW (CFS) STREAM STD (MG/L) 9.28 Upstream Bkgd (mg/I) IWC (%) Allowable Conc. (mg/I) Maintain limit at 7.0 mg/I Total Residual Chlorine 1. Cap Daily Max limit at 28 ug/I to protect for acute toxicity Ammonia (as NH3-N) 1. If Allowable Conc > 35 mg/I, Monitor Only 2. Monthly Avg limit x 3 = Weekly Avg limit (Municipals) 3. Monthly Avg limit x 5 = Daily Max limit (Non-Munis) If the allowable ammonia concentration is > 35 mg/L, no limit shall be imposed 77 6 9.3 1.0 0.22 10.78 7.5 140 6 9.3 1.8 0.22 6.23 25.6 Fecal Coliform 1. Monthly Avg limit x 2 = 400/100 ml = Weekly Avg limit (Municipals) = Daily Max limit (Non -Muni) Lincolnton WWTP/NC0025496 • U • ct (21 Acji N O cr N cI O O N cr.) N Ol O N m N 00 O N N m N O N c-I 0 N N N O m m N m N 00 # of Samples J OA J W CO J 00 J W CO Lincolnton WWTP/NC0025496 • U • ct (21 Acji N O cr N cI O O N m m N 00 O N N m N O N c-I 0 N N N O m m N # of Samples J OA J W CO J 00 J W CO Lincolnton WWTP/NC0025496 • U • ct (21 Acji N O cr N cI O O N cr.) N Ol O N m N 00 O N N m N O N c-I 0 N N N O m m N # of Samples J 0.0 J W CO J 00 J W CO Whole Effluent Toxicity Testing and Self Monitoring Summary V 0 V 0 Mar Jun Sep Dec O 2 0 U1 r-1 O N n C Q O E 0 J O 0 z NC0085588/001 Lincolnton WTP 0 C Chr Monit: 0 N 0 CO C 00 z D_ D_ O_ CO m 0 0 0 0 0 V 0 V 0 0, Mar Jun Sep Dec NC0025496/001 Lincolnton WWTP 0' IWC: 11.0 7Q10: 77.0 chr lim: 6% (3.5MGD) z LL CO m 0 0 0 0 V 0 V 0 0, Jan Apr Jul Oct County: Avery NC0039446/001 Linville Resorts, Inc. IWC: 10.0 NonComp: Single Chr Lim: 10% 0a 1 d z z LL V 0 VI 0 Jan Apr Jul Oct m V C ro f0 O 2 0 .Ft° 0 NC0005177/001 7Q10: 0.27 Chr Lim: 78% CO 0 O Ol cu m 0 n n 2 O O 0 0 = _ = O O O O O O O O O Q A A A A z L V 0 VI 0 0, Mar Jun Sep Dec NC0020231/001 Louisburg WWTP 0' 0- 0 7Q10: 14.0 NonComp: Single chr lim: 13% LD 0 O c M C w co LL CO m O 0 0 0 0 Page 66 of 117 Legend: P= Fathead minnow (Pimphales promelas), H=No Flow (facility is active), s = Split test between Certified Labs Pretreatment Program Info Database for Program Name Lincolnton WWTP Name City of Lincolnton Program Approval Date Pretreatment Status Region County NPDES Number NPDES Effective Date NPDES Expire Date POTW is Primary WWTP Design Flow mgd WWTP SIU's WWTP CIU's 3 5 date Inactive 08/12/1983 Full MRO Lincoln NC0025496 11/01/2016 07/31/2020 TRUE 6.0000 Program SIUs Program ClUs printed on: 5/20/2021 Stream Information 7Q10 Flow cfs / mgd 1Q10 Flow cfs / mgd Stream Classification IWC%at7Q1010.76 77 / 49.74 62.97 / 40.70 WS-IV Basin Number CTB35 Receiving Stream Name SOUTH FORK CATAWBA Last PAR Rec 02/19/2021 Current Fiscal Year PCI Done Last Audit on 09/05/2019 Design mgd is SIU permitted Is I 3 Date Next Due Date Received by DWR Date Approved Adopt Date Required Date Adopted HWA 06/01/2022 05/08/2017 08/03/2017 19.17 PAR Due Date03/01/2022 Audit Year Nex123/24 Permitted SIU flow (mgd) [Pt_SIU) 1.15 mercury 1631 required yes LTMP) IWS 10/01/2024 03/30/2022 12/29/2016 03/30/2017 09/30/2019 01/17/2020 SUO 10/02/2013 10/07/2013 07/10/2014 ERP 12/06/2019 02/05/2020 e- Info in this Box from Pt Contacts PT_Pro g.Prime Formal Name Phonel ext Fax Date Date Date Attended Attended Attended HWA Wksp IUP Wksp PAR Wksp Mr. Robert Pearson I II(704) 736-8970 I 1(704) 736-8979 II I I mearsona,lincolntonnc.ora (Director of Public Works/Utilities PO Box 617 28092 Mr. Don Burkey, Jr. I II(704) 736-8960 1 1(704) 732-6137 II 4/13/2005 I 11/25/2001 I dburkevn,lincolntonnc.ora WWTP Superintendent PO Box 617 28092 Mr. Daniel Perry (Pr1m 11704-736-8960 1 1704-732-6137 II 1/19/2017 15/17/2016 11/21/2015 I dnerrvn,lincolntonnc.ora Pretreatment Coordinator PO Box 617 28092 Pretreatment Related NOVs from DWQ 5/15/2012 10/8/2012 5/13/2013 5/12/2014 7/11/2014 6/5/2015 NOD-2012-PC-0030 Notice of Deficiency: Sampling data NOV-2012-PC-0342 Failure to take appropriate NOV-2013-PC-0176 Failure to submit PAR NOV-2014-PC-0105 Failure to take appropriate NOV-2014-PC-0148 Failure to submit HWA NOD-2015-PC-0129 Failure to take enforcement per DWR Central Office Contact DWR Regional Contact Diana Yitbarek 'Wes Bell J N 0 co O O 0 0 Q 0 MONITORING REPORT(MR) VIOLATIONS for: 0 0) is 0 E a) O d Violation Action: % Subbasin: % Param Nam( Major Minor: REGION: Mooresville COUNTY: Lincoln FACILITY: City of Lincolnton - Lincolnton WWTP NC0025496 F 5 W a Limit Violation VIOLATION ACTION VIOLATION TYPE H 2 J LL O ct H Q zW 2 PARAMETER LOCATION Proceed to NOD a) 0 z No Action, BPJ No Action, BPJ No Action, BPJ No Action, BPJ No Action, BPJ No Action, BPJ No Action, BPJ No Action, BPJ No Action, BPJ No Action, BPJ No Action, BPJ No Action, BPJ No Action, BPJ No Action, BPJ a) rn E E E E E E E E E E E E E E N -O N -O • -O • -O • -O -O -O -O -O E -O • -O • -O • -O -O D-O D E E E E E E E E • E w Ea) Ea) Ea) Ea) E a) >-co >-co 'x-co 'x-co 'x-co 'x-co 'x-co 'x-co 'x-co 'x-co 'x-co 'x-co 'x-co 'x-co 'x-co 'x-co Q a) Q w co cu co cu a) w co w co w co w co w co w co w co w co w co w co w co >, >, 2 2 2 2 2 2 ow 2 ow 2 ow ▪ 2 2 2 2 2 2 X Y X >, X >, X >, X >, X >, X >, X >, X >, X >, X >, X >, X >, X >, X >, X a�• w a�• w —w —w —w —w —w —w =w =w =w =w —w —w —w —w 0 0 0 0 0 0 0 0 0 0 0 0 0 0 O O In ( • O) N- N- a0 O • L() r- 6j N • N V M N O 0 (O M • N- N W L() cc-) M cc-)O N M (() M ✓ uo V N ruo - N N N- L() O N N W 6j M M M M M V c) M N N M Voo oo N Lo co co co co co co co co co co co co co co ✓ V N N N N N N N N N N N N N N 0) rn rn rn rn rn rn rn rn CS) CS) CS) CS) CS) CS) rn E E Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y a) a) a) N N N N N N N N a) a) a) N a) a) a) a) a) a) a) a) a) a) a) a) a) a) a) a) a) X X X X X X X X X X X X X X X X in N in in in N in in in in in in in in in in O co O O co co co co co co co co co co N N _ _ O I- N W In 0 \ N in- I- O) 0 \ N N 0 0 7 N N N N N 7 N N V O 0 N M O) O) co) O) O) O) O) O) 0 O 0 0 o 0 0 0 0 0 0 0 0 U U D D D D D D D D D D D D D D 0 0 0 0 N a) • a) • a) • a) • a) • a) • N • N N • N N N N 0:_ :_ 2' Q_ Q_ Q_ Q_ Q_ Q_ Q_ Q_ Q_ Q_ Q_ Q_ Q_ O (6 O (6 N +�. 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Lincolnton WWTP NC0025496 F 5 W 0 Limit Violation VIOLATION ACTION VIOLATION TYPE FREQUENCY PARAMETER LOCATION No Action, BPJ No Action, BPJ No Action, BPJ No Action, BPJ No Action, BPJ No Action, BPJ No Action, BPJ No Action, BPJ No Action, BPJ No Action, BPJ No Action, BPJ No Action, BPJ No Action, BPJ No Action, BPJ No Action, BPJ No Action, BPJ E E E E E E E E E E E E E E E E E E E E W E W E(D E W E W E W E W E W E W EFp EFp EFp EFp 'x - 'x - 'x - 'x - 'x - 'x - 'x - 'x - 'x - 'x - 'x - 'x - 'x - 'x 'a 'x 'a 'x 'a as ( ( ( W( a)( a)( a)( a)( a)( ( ( (o CD COCD (o CD COCD a)a)CD >, x >, x >, x >, x >, x >, x >, x >, x > x >, x >, x >, x >, x >, x >, x >, x W .( w .( w .( w .( W .( W .( W .( W .( W .( W .( W .( W .( w .( w .( w .( w 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (3) 0) 0) 0) N- (0 V N- (0 V 0) (3) (3) I� O W N 0 W (0 (0 (0 (0 N N N M (0 L() V (0 M M M V M V M V M M M M M C) M V M M M CO CO CO CO CO CO CO CO CO CO CO CO CO CO CO CO N N N N N N N N N N N N N N N N 0) 0) 0) Cr) Cr) Cr) Cr) Cr) Cr) Cr) 0) 0) 0) 0) 0) 0) Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y a) a) a) N N N N N N N N N N N N N a) N N N N N N N N N N N N N N N X X X X X X X X X X X X X X X X in in in co in in in co in in in in in in in N N- N- N- N- N- N- N- N- N- N- N- N- N- N- N- N- M O \ N O 0 N V N N co co O O O 7 N N N co N- O O O O O O O O O O O O O O O O m m m m m m m m m m m m m m m To (77 7 7 7 7 7 7 7 7 7 7 7 7 7 () a) N N as N N N N N N N N N N N a) _ To (6 To (6 (6 (6 (6 (6 (6 (6 (6 (6 (6 To (6 (6 F2 F2 F2 F F F F F F F F F F F F F N ai ai ai ai ai ai ai ai ai ai ai ai ai ai ai C C C C C C C C C C C C C C C C O O O O O O O O O O O O O O O O _c L L L L L L L L L L L L L L L U U U U U U U U U U U U U U U U C C C C C C C C C C C C C C C C N N N N N N N N N N N N N N N N 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 - 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C C C C C C C C C C C C C C C C N N N N N N N N N N N N N N N N 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 W W W W W W W W W W W W W W W W 0 O O O O O O O O O O O O O O O O 0 0 O O O O O O O O O O O O O O O (9 6) 6) O) O) O) O) O) O O O O O O O O O Z H N N N N N N N N N E ce O O O O O O O O O O O O O O O O 0 0 N N N N N N N N N N N N N N N N I— a 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 W V V V V N N N M V N— N— N— () N N OF:t CD O 0 0 0 0 0 0 0 0 2 N 0 co O N as 0 O Q N MONITORING REPORT(MR) VIOLATIONS for: Violation Action: % Subbasin: % Param Nam( % Major Minor: REGION: Mooresville COUNTY: Lincoln FACILITY: City of Lincolnton - Lincolnton WWTP NC0025496 F 5 W a Limit Violation VIOLATION ACTION VIOLATION TYPE O H 2 J a_ W O D I— CO za D W 2 FREQUENCY PARAMETER LOCATION Proceed to NOV Proceed to NOV a) a) c c O 0 z z a) a) a) • 0) 0) 0) U N a) a) a) a) N a) E a) < a) < a) < a) T T _T a) X Y CD X Y 0 _c 0 w cow cow c W T 2 a) VIOLATION ACTION VIOLATION TYPE N W N • tri N N N 0 0 W 0) (.0 0) Q W (0 O) co L() J D (0 CO cci —1(0 • COM J Q 0 u W — — — O D O 0) 0) 0) 7 �_ E E E z a U Y Y Y Y z a) a) a) a) W W X • X X X CC In In In N LL z 0) 0 O N N N H F I� Q Q O N M d ❑ N M M � O O 0 0 c c c c a) a) a) a) W W W W W W W W J J Q LL H D O - 0 - 0 - 0 O O 0 0 0 O 0 _ _ Z H O N N N E ce O O 0 0 O 0 N N N N H d 1 1 1 1 Z W N M COO O O O O 2 Monitoring Violation PARAMETER LOCATION CO • O 0 CO W m W c c • O C O < • 0 < 0 O a3 0 a3 z U z Parameter Missing Parameter Missing o o u u O 0 c c n n a a a)) a a a)) > > Annual Pollutant Scan [126 an [126 F ( E a) a) E • E as as o_ d o_ Proceed to NOD Frequency Violation a) W VIOLATION ACTION VIOLATION TYPE H 2 J a_ W O c I— CO za D W 2 PARAMETER LOCATION J J LL c H O O o 0 Attachment A —Request for Missing Information Table 2. EPA Application Form 2A Missing Information 40 CFR 122.21(j)(1) 1.1 Email address of facility contact dburkey@lincolntonnc.org 1.2 Applicant email address dburkey@lincolntonnc.org 1.3 Email address of the organization transporting the discharge for treatment prior to discharge N/A 1.4 Email address of the organization receiving the discharge for treatment prior to discharge N/A 1.5 Do you intend to request or renew one or more of the variances authorized at 40 CFR 122.21(n)? (Check all that apply. Consult with your NPDES permitting authority to determine what information needs to be submitted and when.) Discharges into marine waters (CWA Section ❑ Water quality related effluent limitation (CWA 301(h)) Section 302(b)(2)) EA/ Not applicable 1.6 Email address of contractor responsible for operational or maintenance aspects of the treatment works N/A 40 CFR 122.21(j)(6) 1.7 Indicate the number of SIUs and NSCIUs that discharge to the POTW. Number of SIUs Number of CIUs 2 3 40 CFR 122.22(a) and (d) 1.8 Certification Statement I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. Name (print or type first and last name) Official title Donald Berkey Jr. ORC 1 Superintendent WWTP Signature42k Date signed &2') 1-- 5.6-2021 NC Department of Environment and Natural Resources Model Mercury Minimization Plan Background The North Carolina Department of Environment and Natural Resources, Division of Water Resources (DENR), has issued a statewide total maximum daily load (TMDL) for mercury. The TMDL responds to a statewide fish consumption advisory for mercury. The TMDL calls for a 67% reduction in mercury levels from the year 2002 baseline mercury loading. The ultimate goal of the TMDL is to ensure safe - levels of mercury in fish throughout North Carolina for human consumption. As explained in the TMDL, 98 percent of mercury in North Carolina waters comes from atmospheric sources — the vast majority of which are located outside of the State. Under the Clean Water Act, atmospheric deposition of mercury into surface waters is regarded as a nonpoint source. Minor amounts of mercury are discharged directly into surface waters by industrial and municipal point sources as a group. Specifically, the TMDL determined that point sources contribute less than two (2) percent of the annual mercury loadings to State waters. The TMDL allocates two percent of the statewide allowable loadings collectively to the point source sector. This does not mean that an individual discharger may not have significant levels of mercury in its discharge in terms of local water quality considerations. While we expect such instances to be rare based upon the Department's review of statewide mercury data, dischargers with higher mercury loadings will be expected to implement more aggressive mercury controls. Notably, unlike any other source, local governments actually reduce mercury loadings in the environment by first filtering mercury out in the treatment of public drinking water (particularly where the source of raw drinking water is surface water) and then a second time when wastewater is treated. In order to implement the two percent point source sector wasteload allocation, the Department has developed a point source permitting strategy which is located at http://deq.nc.gov/about/divisions/water- resources/planning/modeling-assessment/special-studies/mercury-tmdl. The Environmental Management Commission has approved both the TMDL and the Permitting Strategy. The permitting strategy calls for certain point sources to develop and implement mercury minimization plans (MMPs). For POTWs, an MMP will be required if the facility has (1) a permitted design capacity of more than two million gallons per day and (2) mercury at quantifiable levels in their effluent. MMPs feature best management practices and have been implemented successfully in numerous states around the country. The attached document is the City of Lincolnton's MMP. Typically, MMPs focus on pretreatment controls — a local government's interaction with non -domestic users of its sewer system as well as outreach to the public at large regarding the proper use and disposal of household products containing mercury. The MMP approach is intended as a reasonable, low-cost approach toward making some progress toward managing the two percent loading statewide from point sources. Mercury treatment and even testing is very expensive and does not make sense to reduce a small part of the already insignificant two percent overall point source annual loading to State waters. City of Lincolnton Wastewater Treatment Plant MERCURY MINIMIZATION PLAN February 17, 2017 SECTION I - PURPOSE The purpose of this Mercury Minimization Plan ("MMP") is to describe best management practices through which the City of Lincolnton WWTP will seek to reduce the amount of mercury discharged into its system and, ultimately, to the environment. The MMP compiles mercury reduction -related efforts to - date and potential future action items. It is designed to be a working document to help guide the City of Lincolnton in its efforts to control mercury loadings discharged into its Publicly -Owned Treatment Works (POTW) by users of the sewer system. Such a reduction in loadings to the sewer system should translate to a reduction in the amount of mercury which is discharged from the treatment plant. The management practices summarized below may also help control some of the mercury reaching our storm sewer system as well. SECTION II — FACILITY DESCRIPTION The City of Lincolnton operates a publicly owned treatment works (POTW), including a collection system and wastewater treatment plant (WWTP), that serves the City, and Industrial Users inside the County. This Wastewater system is permitted to treat 6.0 MGD and break/removes organic waste through an Activated Sludge process. Our facility utilizes a three -step removal process inclusive of preliminary, primary and secondary treatment systems. Our Preliminary Treatment begins when the wastewater enters our plant from various locations throughout the City and County's Industrial Users. The wastewater is received at the Main Lift Station where debris is grind into smaller pieces using a huge grinder. The pumps lift the water from the Main Lift and the wastewater is further processed for additional removal of debris and grit. The grit is removed using a Vortex Removal System and dumped onto a belt for disposal. . Primary treatment begins when the wastewater travels from preliminary system to the Oxidation Ditch. This begins the first of two biological phases. The Oxidation Ditch has inner and outer rings which aids in breaking down organic matter. The wastewater enters the outer ring and mixes with microorganisms. The mixture of wastewater and microorganisms travels to the inner rings and is further mixed with rotating disc, which are located around the orbital. The microorganism undergoes further breakdown as the wastewater flows to the Aeration Basins. Blowers are used to sustain a comfortable level of oxygen for the survival of the microorganism. The Aeration Basins allows microorganisms to clean the water by consuming the waste and sending less organic matter to the Secondary Clarifiers. This process aids in BOD, COD, Phosphorus, and Ammonia removals. Our last treatment is called, Secondary Treatment. This occurs when the water travels from the Aeration Basins and splits off into one of two Secondary Clarifiers where additional settling occurs. The solids either returns to the Oxidation Ditch to restart another cycle of organic matter breakdown, or the solids goes to the Diffused Air Flotation Unit for sludge removal. The wastewater leaves the Secondary via notch weirs, prevents bypass of floatables, thus increasing Effluent quality, and travels to the Contact Chambers for disinfection prior to discharge. After proper disinfection, the water is discharged into the South Fork River. The City of Lincolnton's Wastewater Treatment Plant is not designed to remove mercury, but does use the 1631 method of collection to monitor mercury levels. Incidental mercury removal occurs through typical municipal treatment with trace levels of mercury (and other metals) ending up in solids removed from the raw wastewater. Mercury is not used in the treatment processes at the WWTP. Mercury may be introduced into the sewer system through a variety of sources, such as from industrial users, laboratories, and other businesses. Residual deposits of mercury are also possible in the sewer system from historic practices. Finally, trace amounts from household products and atmospheric deposition (both wet and dry) contribute to sewer system mercury loadings. While there is typically some mercury contributed to public sewer systems statewide, it is usually in minute quantities and comprises a tiny portion of the already insignificant statewide loading for all point sources - just two percent of the annual mercury loadings to all State waters. SECTION III — PROGRAM PLAN A. EVALUATION OF POTENTIAL NON -DOMESTIC SOURCES CONTRIBUTING MERCURY TO THE POTW Within 24 months from the NPDES required 180-day period for development of an MMP, the City of Lincolnton will evaluate available information to assess the potential for non -domestic users of the sewer system to contribute mercury to the system. The information to be reviewed may include: (1) POTW influent and effluent mercury data and trends; (2) industrial user permits and associated mercury monitoring data; (3) Toxics Release Inventory (TRI); (4) state hazardous site registry and the National Priority List relating to mercury contamination; and (5) historical records of industrial sites which have contributed mercury loadings to the sewer system. The City of Lincolnton will also survey and evaluate the following common sources of mercury in its service area: (1) dentist offices; (2) hospitals; (3) laboratories; (4) auto recyclers; and (5) other potential sources of mercury based on existing information. The City of Lincolnton began surveying dentist offices October 2015, and has identified offices in need of proper disposal of mercury fillings (amalgam). The City of Lincolnton will request that industrial users review mercury concentrations in high -volume process chemicals and demonstrate that the mercury concentrations are below industry average. The City of Lincolnton will request that alternative sources for chemicals be explored if the mercury levels are determined to be significantly higher than would normally be expected. The evaluation of potential non -domestic sources of mercury to the sewer system will be updated every five years, as warranted by prior sampling results and any additional new potentially significant sources to the system. B. ADDITIONAL CONTROL MEASURES This MMP identifies reasonable and cost-effective control measures to minimize mercury being discharged into the POTW. Below is a listing of initial BMPs for this POTW. Pollution Prevention Substances used at the WWTP will be evaluated to determine if they contain mercury or mercury -based compounds. Any such chemicals will be evaluated for substitution with non -mercury -containing substances. Housekeeping, Spill Control and Collection, and Education The City of Lincolnton WWTP will develop procedures to minimize the possibility of any spill or release at the WWTP involving mercury containing substances. City of Lincolnton WWTP will add mercury identification and proper disposal to ongoing and future operator training procedures. Public Outreach The City of Lincolnton will make available educational information regarding sources of household mercury and appropriate use/disposal practices. This information will be posted on the City of Lincolnton's website and copies will be made available at Public Works. The availability of this information will be ongoing on the website and updated for changes. The City of Lincolnton will also facilitate public awareness regarding community collection points for mercury -containing products from residents/customers for proper disposal. Periodic reminders of such collection programs will be provided as part of the City of Lincolnton's ongoing public outreach. Laboratory Practice The City of Lincolnton WWTP operates a laboratory for purposes of complying with state and federal monitoring and sampling requirements. The laboratory is a potential source of small quantities of mercury -containing compounds. Laboratory employees will be trained in the proper handling and disposal of these materials. The laboratories have also replaced mercury thermometers with non -mercury thermometers, whenever practical. A Mercury Spill Kit is available on site in the laboratory for incidental mercury spills. C. TRACKING AND MONITORING In order to assess the implementation of the control measures, the City of Lincolnton proposes to undertake the following evaluations beginning after the first full year that this MMP is implemented: 1. Survey annually at least ten percent (10%) of any non -domestic users identified as possible significant sources of mercury to the POTW; 2. Track the implementation of the programs outlined above; 3. Monitor influent mercury at least annually. Require significant non -domestic sources of mercury to monitor periodically, as warranted; and 4. Measure effluent mercury as required by the NPDES permit. These efforts will allow the City of Lincolnton to establish a baseline of influent and effluent mercury levels to assist in identifying any trends in mercury contributions from domestic and non -domestic users of the sewer system. This baseline will be tracked annually. SECTION IV — IMPLEMENTATION OF CONTROL MEASURES The City of Lincolnton WWTP monitors mercury levels on all industrial users. Ninety-nine percent of our industrial users, lab results are non- detectable. The other one percent has a minute/trace amount. At this time, the City of Lincolnton does not see a need for implementation of mercury limits for our industrial users. The pretreatment department continues to monitor our Influent mercury levels for potential elevations. The City will remain vigilant towards environmental concerns with regards to increase mercury levels. The City of Lincolnton will implement the control measures summarized in Section III over the permit term and will update this MMP as warranted. SECTION V - REPORTING A summary of the MMP activities will be submitted as part of the NPDES permit renewal process. CITY OF LINCOLNTON Mercury Minimization Plan (MMP) Info: • Implemented a Full Pretreatment Program — August 12, 1983 • Implemented a MMP — February 17, 2017 • Updated Enforcement Response Plan (ERP) to reflect the MMP — February 5, 2020 MMP Implementation Summary: • Public outreach and education (brochures, flyers, Inter -local Jurisdiction Agreement (IJA) with Lincoln County) • Yearly training with WWTP staff concerning mercury • Implemented a collection and disposal policy for the community for proper disposal of mercury containing equipment (i.e. Replace mercury thermometers with non - mercury based thermometer) • Surveyed and Inspection of dental and other related medical facilities (i.e. Dental dischargers per EPA and state guidance [surveyed 16 facilities — 2 are no longer in service as of October 2020]) • Monitor and report lab. analysis of every industrial user (per LTMP and permit requirements) • Monitor and report lab. analysis of WWTP Influent and Effluent (per LTMP and permit requirements) June 3, 2021 DP Annual Monitoring and Pollutant Scan Permit No. NC0025496 Outfall 001 Month September Year 2017 Facility Name City of Lincolnton ORC Donald Burkey Date of sampling 9/14/2017 Phone (704) 736-8960 City of Lincolnton WWTP Lab (NC# 153) / Prism Lab Inc (NC#402) / Blue Ridge Analytical Laboratory Labs (NC#275) / Crowders Creek Lab (NC #210)/Summit Envr (NC#631) Parameter Sample Type Analytical Method Quantitation Level Sample Result Units of Measurement Number of samples Ammonia (as N) Composite SM4500NH3D1997 0.1 0.3 mg/1 1 Dissolved oxygen Grab HACH 10360-2011 rev 1.2 (LDO)(AQ) 0.1 7.1 mg/1 1 Nitrate/Nitrite Composite SM4500-NO3 F 0.5 5.4 mg/1 1 Total Kjeldahl nitrogen Composite EPA351.2 1.0 3.2 mg/1 1 Total Phosphorus Composite SM4500-P F 0.25 1.8 mg/1 1 Total dissolved solids Composite SM2540C 1.0 830 mg/1 1 Hardness Composite 2340B 1997 0.03 34.1 mg/1 1 Chlorine (total residual, TRC) Grab SM4500CLG2000 10 22 ug/1 1 Oil and grease Grab 5520B2001 1 1.4 mg/1 1 Metals (total recoverable), cyanide and total phenols Antimony Composite 200.7 1994 0.01 0.028 mg/L 1 Arsenic Composite 200.7 1994 0.01 <0.01 mg/L 1 Beryllium Composite 200.7 1994 0.02 <0.02 mg/L 1 Cadmium Composite 200.7 1994 0.0002 <0.0002 mg/L 1 Chromium Composite 200.7 1994 0.001 <0.001 mg/L 1 Copper Composite 200.7 1994 0.001 0.002 mg/L 1 Lead Composite 200.7 1994 0.01 <0.01 mg/L 1 Mercury Composite EPA 1631E 0.3 1.86 ng/1 1 Nickel Composite 200.7 1994 0.001 <0.001 mg/L 1 Selenium Composite 200.7 1994 0.01 <0.01 mg/L 1 Silver Composite 200.7 1994 0.001 <0.001 mg/L 1 Thallium Composite EPA 200.7 0.02 <0.02 mg/L 1 Zinc Composite 200.7 1994 0.001 0.083 mg/L 1 Cyanide Grab 4500-CN E 1 0.005 <0.005 mg/L 1 Total phenolic compounds Grab 420.1 1978 0.005 0.005 mg/L 1 Volatile organic compounds Acrolein Grab EPA 624 50 <50 ug/1 1 Acrylonitrile Grab EPA 624 50 <50 ug/I 1 Benzene Grab EPA 624 5 <5 ug/1 1 Bromoform Grab EPA 624 5 <5 ug/1 1 Carbon tetrachloride Grab EPA 624 5 <5 ug/1 1 Chlorobenzene Grab EPA 624 5 <5 ug/1 1 Chlorodibromomethane Grab EPA 624 5 9.92 ug/1 1 Chloroethane Grab EPA 624 10 <10 ug/1 1 2-chloroethylvinyl ether Grab EPA 624 10 <10 ug/1 1 Chloroform Grab EPA 624 5 22.5 ug/1 1 Dichlorobromomethane Grab EPA 624 5 <5 ug/1 1 1.,1-dichloroethane Grab EPA 624 5 <5 ug/1 1 1,2-dichloroethane Grab EPA 624 5 <5 ug/1 1 Trans-1,2-dichloroethylene Grab EPA 624 5 <5 ug/1 1 Form - DMR- PPA-1 Page 1 Annual Monitoring and Pollutant Scan Month September Year 2017 Permit No. NC0025496 Outfall 001 Parameter Sample Type Analytical Method Quantitation Level Sample Result Units of Measurement Number of samples Volatile organic compounds (Cont.) 1,1-dichloroethylene Grab EPA 624 5 <5 ug/1 1 1,2-dichloropropane Grab EPA 624 5 _ <5 ug/1 1 1,3-dichloropropylene Grab EPA 624 5 <5 ug/1 1 Ethylbenzene Grab EPA 624 5 <5 ug/1 1 Methyl bromide Grab EPA 624 10 <10 ug/1 1 Methyl chloride Grab EPA 624 10 <10 ug/1 1 Methylene chloride Grab EPA 624 5 <5 ug/1 1 1,1,2,2-tetrachloroethane Grab EPA 624 5 <5 ug/1 1 Tetrachloroethylene Grab EPA 624 5 <5 ug/1 1 Toluene Grab EPA 624 5 <5 ug/1 1 1,1,1-trichloroethane Grab EPA 624 5 <5 ug/1 1 1,1,2-trichloroethane Grab EPA 624 5 <5 ug/1 1 Trichloroethylene Grab EPA 624 5 <5 ug/1 1 Vinyl chloride Grab EPA 624 2 <2 ug/1 1 Acid -extractable compounds P-chloro-m-creso Grab EPA 625 0.0012 <0.0012 mg/1 1 2-chlorophenol Grab EPA 625 0.0012 <0.0012 mg/1 1 2,4-dichlorophenol Grab EPA 625 0.0012 <0.0012 mg/1 1 2,4-dimethylphenol Grab EPA 625 0.0012 <0.0012 mg/1 1 4,6-dinitro-o-cresol Grab EPA 625 0.0012 <0.0012 mg/1 1 2,4-dinitrophenol Grab EPA 625 0.0059 <0.0059 mg/1 1 2-nitrophenol Grab EPA 625 0.0012 <0.0012 mg/1 1 4-nitrophenol Grab EPA 625 0.0012 <0.0012 mg/1 1 Pentachlorophenol Grab EPA 625 0.0059 <0.0059 mg/1 1 Phenol Grab EPA 625 0.0012 <0.0012 mg/1 1 2,4,6-trichlorophenol Grab EPA 625 0.0012 0.00181 mg/1 1 Base -neutral compounds Acenaphthene Grab EPA 625 0.0012 <0.0012 mg/1 1 Acenaphthylene Grab EPA 625 0.0012 <0.0012 mg/1 1 Anthracene Grab EPA 625 0.0012 <0.0012 mg/1 1 Benzidine Grab EPA 625 0.0012 <0.0012 mg/1 1 Benzo(a)anthracene Grab EPA 625 0.0012 <0.0012 mg/1 1 Benzo(a)pyrene Grab EPA 625 0.0012 <0.0012 mg/1 1 3,4 benzofluoranthene Grab EPA 625 0.0012 <0.0012 mg/1 1 Benzo(ghi)perylene Grab EPA 625 0.0012 <0.0012 mg/1 1 Benzo(k)fluoranthene Grab EPA 625 0.0012 <0.0012 mg/1 1 Bis (2-chloroethoxy) methane Grab EPA 625 0.0012 <0.0012 mg/1 1 Bis (2-chloroethyl) ether Grab EPA 625 0.0012 <0.0012 mg/1 1 Bis (2-chloroisopropyl) ether Grab EPA 625 0.0012 <0.0012 mg/1 1 Bis (2-ethylhexyl) phthalate Grab EPA 625 0.0012 <0.0012 mg/1 1 4-bromophenyl phenyl ether Grab EPA 625 0.0012 <0.0012 mg/1 1 Butyl benzyl phthalate Grab EPA 625 0.0012 <0.0012 mg/1 1 2-chloronaphthalene Grab EPA 625 0.0012 <0.0012 mg/1 1 4-chlorophenyl phenyl ether Grab EPA 625 0.0012 <0.0012 mg/1 1 Form - DMR- PPA-1 Page 2 Annual Monitoring and Pollutant Scan Permit No. NC0025496 Outfall 001 Month September Year 2017 Parameter Sample Type Analytical Method Quantitation Level Sample Result Units of Measurement Number of samples Base -neutral compounds (coat ) Chrysene Grab EPA 625 0.0012 <0.0012 nag/1 1 Di-n-butyl phthalate Grab EPA 625 0.0012 <0.0012 mg/1 1 Di-n-octyl phthalate Grab EPA 625 0.0012 <0.0012 mg/1 1 Dibenzo(a,h)anthracene Grab EPA 625 0.0012 <0.0012 mg/1 1 1,2-dichlorobenzene Grab EPA 625 0.0012 <0.0012 mg/1 1 1,3-dichlorobenzene Grab EPA 625 0.0012 <0.0012 mg/1 1 1,4-dichlorobenzene Grab EPA 625 0.0012 <0.0012 mg/1 1 3,3-dichlorobenzidine Grab EPA 625 0.0012 <0.0012 mg/1 1 Diethyl phthalate Grab EPA 625 0.0012 <0.0012 mg/1 1 Dimethyl phthalate Grab EPA 625 0.0012 <0.0012 mg/1 1 2,4-dinitrotoluene Grab EPA 625 0.0012 <0.0012 mg/1 1 2,6-dinitrotoluene Grab EPA 625 0.0012 <0.0012 mg/1 1 1,2-diphenylhydrazine Grab EPA 625 0.0047 <0.0047 mg/1 1 Fluoranthene Grab EPA 625 0.0012 <0.0012 mg/1 1 Fluorene Grab EPA 625 0.0012 <0.0012 mg/1 1 Hexachlorobenzene Grab EPA 625 0.0012 <0.0012 mg/1 1 Hexachlorobutadiene Grab EPA 625 0.0012 <0.0012 mg/1 1 Hexachlorocyclo-pentadiene Grab EPA 625 0.0012 <0.0012 mg/1 1 Hexachloroethane Grab EPA 625 0.0012 <0.0012 mg/1 1 Indeno(1,2,3-cd)pyrene Grab EPA 625 0.0012 <0.0012 mg/1 1 Isophorone Grab EPA 625 0.0012 <0.0012 mg/1 1 Naphthalene Grab EPA 625 0.0012 <0.0012 mg/1 1 Nitrobenzene Grab EPA 625 0.0012 <0.0012 mg/1 1 N-nitrosodi-n-propylamine Grab EPA 625 0.0012 <0.0012 mg/1 1 N-nitrosodimethylamine Grab EPA 625 0.0012 <0.0012 mg/1 1 N-nitrosodiphenylamine Grab EPA 625 0.0012 <0.0012 mg/1 1 Phenanthrene Grab EPA 625 0.0012 <0.0012 mg/1 1 Pyrene Grab EPA 625 0.0012 <0.0012 mg/1 1 1,2,4,-trichlorobenzene Grab EPA 625 0.0012 <0.0012 mg/1 1 Dibenzofuran Grab EPA 625 0.0012 <0.0012 mg/1 1 m 85p Cresol Grab EPA 625 0.0047 <0.0047 mg/1 1 "I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who managed the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations." Auth Signature 10�3///7 Date ame Form - DMR- PPA-1 Page 3 Permit No. NC0025496 Outfall 001 Annual Monitoring and Pollutant Scan Month. December Year. 2018 Facility: Name City of Lincolnton Date of sampling- December 20, 2018 ORC Donald Burkey Phone 704-736-8960 Analytical Laboratory: Blue Ridge Labs (NC #275)/ City of Lincolnton WWTP Lab (NC #153) Crowders Creek Lab (NC #210)/ Summit Environmental (NC #631) anlete ti Method 140: Ammonia (as N) Composite SM4500NH3D 1997-2011 0.2 <0.2 mg/1 1 Chlorine (total residual, TRC Grab SM4500CLG-20 11 10 31 ug/1 Hach 10360-2011 Dissolved Oxygen Grab rev 1.2 (LDO) (AQ) 0.1 8.32 Nitrite plus Nitrate Total (as N Composite SM 194500-N 0.08 2.72 mg/1 mg/1 1 Total Kjeldahl Nitrogen Composite SM 194500-N 0.5 4.76 mg/1 1 Oil and Grease Grab 5520B 2001 1 1.2 Total Phosphorus Composite EPA 200.7 0.02 0.675 mg/1 mg/1 1 1 Total Dissolved Solids Composite 2540C 1997 1 145 mg/1 1 Hardness rec Composite 2340B 1997 0.03 23.8 mg/1 Antimony Composite EPA 200.7 1994 0.01 <0.01 mg/1 Arsenic Composite EPA 200.7 1994 0.01 <0.01 mg/1 1 Beryllium Composite EPA 200.7 1994 0.001 <0.001 mg/1 1 Cadmium Composite EPA 200.7 1994 0.0002 <0.0002 mg/1 1 Chromium Composite EPA 200.7 1994 0.001 <0.001 mg/1 1 Copper Composite EPA 200.7 1994 0.001 0.008 mg/1 1 Lead Composite EPA 200.7 1994 0.01 <0.01 mg/1 1 Mercury (Method 1631E) Composite EPA1631E 1 2 ng/1 1 Nickel Composite EPA 200.7 1994 0.001 <0.001 mg/1 1 Selenium Composite EPA 200.7 1994 0.01 <0.01 mg/1 1 Silver Composite EPA 200.7 1994 0.001 <0.001 mg/1 1 Thallium Composite EPA 200.7 1994 0.001 <0.001 mg/1 1 Zinc Composite EPA 200.7 1994 0.001 <0.001 mg/1 1 Cyanide Grab 4500-CN-E 1 0.005 <0.005 mg/1 1 Total phenolic compounds Grab 420.1 0.01 <0.01 mg/1 vo1atilri c com Acrolein Grab EPA 624 50 <50 ug/ Acrylonitrile Grab EPA 624 50 <50 ug/1 1 Benzene Bromoform Carbon Tetrachloride Chlorobenzene Grab Grab Grab Grab EPA 624 EPA 624 EPA 624 EPA 624 5 5 5 5 <5 <5 <5 <5 Chlorodibromomethane Chloroethane Grab Grab EPA 624 EPA 624 5 5 <5 <5 ug/1 ug/1 ug/1 ug/1 ug/1 ug/1 1 1 1 1 1 1 2-chloroethyl vinyl ether Grab EPA 624 10 <10 ug/1 1 Chloroform Dichlorobromomethane Grab Grab EPA 624 EPA 624 5 5 10.2 <5 ug/1 ug/1 1 1 1,1-dichloroethane Grab EPA 624 5 <5 ug/1 1 1,2-dichloroethane Grab EPA 624 5 <5 ug/1 1 Trans- 1,2-dichloroethylene 1, 1-dichloroethylene 1,2-dichloropropane 1,3-dichloropropylene Grab Grab Grab Grab EPA 624 EPA 624 EPA 624 EPA 624 5 5 5 <5 <5 <5 <5 ug/1 ug/1 ug/1 ug/1 1 1 1 1 Ethylbenzene Grab EPA 624 5 <5 ug/1 1 Form - DMR- PPA-1 Page 1 Permit No.0 C o° Lj C (O Outfall t Annual Monitoring and Pollutant Scan Monthn.Q 3L Year a. o Methyl Bromide Methyl Chloride Grab Grab EPA 624 EPA 624 <5 ug/1 ug/1 1 1 Methylene Chloride Grab EPA 624 5 <5 ug/1 1 1,1,2,2-tetrachloroethane Grab EPA 624 5 <5 Tetrachloroethylene Toluene Grab Grab EPA 624 EPA 624 5 5 1,1,1-trichloroethane 1,1,2-trichloroethane Grab Grab EPA 624 EPA 624 5 5 Trichloroethylene Grab EPA 624 5 <5 <5 <5 <5 <5 ug/1 ug/1 ug/1 1 ug/1 ug/1 ug/1 1 1 1 1 1 Vinyl Chloride Grab EPA 624 5 <5 ug/1 1 actabie;com P-chloro-m-creso Grab EPA 625.1 0.0056 <0.0056 mg/1 1 2-chlorophenol 2,4-dichlorophenol Grab EPA 625.1 0.0056 <0.0056 mg/1 1 2,4-dimethylphenol 4,6-dinitro-o-cresol Grab Grab Grab EPA 625.1 EPA 625.1 EPA 625.1 0.0056 0.0056 0.0056 <0.0056 <0.0056 <0.0056 mg/1 mg/1 mg/1 1 1 1 2,4-dinitrophenol Grab EPA 625.1 0.0278 <0.0278 mg/1 1 2-nitrophenol Grab EPA 625.1 0.0056 <0.0056 mg/1 1 4-nitrophenol Pentachlorophenol Grab EPA 625.1 0.0056 <0.0056 mg/1 Grab EPA 625.1 0.0278 <0.0278 mg/1 1 Phenol Grab EPA 625.1 0.0056 <0.0056 mg/1 1 2 , 4 , 6-trichlorophenol Grab EPA 625.1 0.0056 <0.0056 mg/1 1 Rase-neutral-compow Acenaphthene Grab EPA 625.1 0.0056 <0.0056 mg/1 1 Acenaphthylene Anthracene Benzidine Benzo(a)anthracene Benzo(a)pyrene 3,4 benzofluoranthene Grab Grab EPA 625.1 EPA 625.1 0.0056 0.0056 <0.0056 <0.0056 1 1 Grab EPA 625.1 0.0056 <0.0056 mg/1 1 Grab EPA 625.1 0.0056 <0.0056 mg/1 1 Grab EPA 625.1 0.0056 <0.0056 mg/1 1 Grab EPA 625.1 0.0056 <0.0056 mg/1 1 Benzo(ghi)perylene Grab EPA 625.1 0.0056 <0.0056 mg/1 1 Benzo(k)fluoranthene Grab EPA 625.1 0.0056 <0.0056 mg/1 1 Bis (2-chloroethoxy) methane Grab EPA 625.1 0.0056 <0.0056 mg/1 1 Bis (2-chloroethyl) ether Bis (2-chloroisopropyl) ether Bis (2-ethylhexyl) phthalate 4-bromophenyl phenyl ether Butyl benzyl phthalate Grab Grab Grab EPA 625.1 EPA 625.1 EPA 625.1 0.0056 0.0056 0.0056 <0.0056 <0.0056 <0.0056 mg/1 mg/1 mg/1 1 1 1 Grab Grab EPA 625.1 EPA 625.1 0.0056 0.0056 <0.0056 <0.0056 mg/1 mg/1 1 1 2-chloronaphthalene Grab EPA 625.1 0.0056 <0.0056 mg/1 1 4-chlorophenyl phenyl ether Grab EPA 625.1 0.0056 <0.0056 mg/1 1 Chrysene Di-n-butyl phthalate Di-n-octyl phthalate Dibenzo (a,h) anthracene 1,2-dichlorobenzene 1,3-dichlorobenzene Grab Grab Grab Grab Grab Grab EPA 625.1 EPA 625.1 EPA 625.1 EPA 625.1 EPA 625.1 EPA 625.1 0.0056 0.0056 0.0056 0.0056 0.0056 0.0056 <0.0056 <0.0056 <0.0056 <0.0056 <0.0056 <0.0056 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 1 1 1 1 1 1 1,4-dichlorobenzene Grab EPA 625.1 0.0056 <0.0056 mg/1 1 3,3-dichlorobenzidine Diethyl phthalate Dimethyl phthalate Grab Grab EPA 625.1 EPA 625.1 0.0056 0.0056 <0.0056 <0.0056 mg/1 mg/1 1 1 Grab EPA 625.1 0.0056 <0.0056 mg/1 1 Form - DMR- PPA-1 Page 2 Permit No. IN L 01).-c'i.fi Outfall 001 Annual Monitoring and Pollutant Scan Month 0,2 c- Year Sj 2,4-dinitrotoluene Grab EPA 625.1 0.0056 <0.0056 mg/1 1 2,6-dinitrotoluene Grab EPA 625.1 0.0056 <0.0056 mg/1 1 1,2-diphenylhydrazine Grab EPA 625.1 0.0222 <0.0222 mg/1 1 Fluoranthene Grab EPA 625.1 0.0056 <0.0056 mg/1 1 Fluorene Grab EPA 625.1 0.0056 <0.0056 mg/1 1 Hexachlorobenzene Grab EPA 625.1 0.0056 <0.0056 mg/1 1 Hexachlorobutadiene Grab EPA 625.1 0.0056 <0.0056 mg/1 1 Hexachlorocyclo-pentadiene Grab EPA 625.1 0.0056 <0.0056 mg/1 1 Hexachloroethane Grab EPA 625.1 0.0056 <0.0056 mg/1 1 Indeno(1,2,3-cd)pyrene Grab EPA 625.1 0.0056 <0.0056 mg/1 1 Isophorone Naphthalene Grab EPA 625.1 0.0056 <0.0056 mg/1 1 Grab EPA 625.1 0.0056 <0.0056 mg/1 1 Nitrobenzene Grab EPA 625.1 0.0056 <0.0056 mg/1 1 N-nitrosodi-n-propylamine Grab EPA 625.1 0.0056 <0.0056 mg/1 1 N-nitrosodimethylamine Grab EPA 625.1 0.0056 <0.0056 mg/1 1 N-nitrosodiphenylamine Grab EPA 625.1 0.0056 <0.0056 mg/1 1 Phenanthrene Pyrene Grab EPA 625.1 0.0056 <0.0056 mg/1 1 Grab EPA 625.1 0.0056 <0.0056 mg/1 1 1,2,4,-trichlorobenzene Grab EPA 625.1 0.0056 <0.0056 mg/1 1 "I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who managed the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations." Signature lhi ilg Date Form - DMR- PPA- 1 Page 3 Annual Monitoring and Pollutant Scan Permit No. NC0025496 Outfall 001 Month MARCH Year 2019 Facility Name City of Lincolnton VNNTP oxc Donald A. Burkey Jr. Date of sampling: 03/21/2019 Phone (704) 736-8960 Analytical Laboratory: Blue Ridge Labs (NC #275) City of Lincolnton WWTP Lab (NC #153) Summit Environmental (NC8831) Crowders Creek Lab (NC #210) -. Faremete[ - . Parameter,-' Code; .> 3emgte; 719pe' . ,-� r- Aualytieai;Method �. Q nt5tatloa Level. - :-'"uamp'f#t3ie#}t1R ...: -D`aits ofMeasarement Ammonia (as N) C0610 Composite SM4500NH3D 1997-2011 0.2 0-3 mg/1 Chlorine (total residual, TRC) 50060 Grab SM4500CLG-2011 10 <10 ug/1 Hach 10360-2011 Dissolved Oxygen 00300 Grab Rev 1.2(LDO) (AQ) 0.1 7.94 mg/1 Nitrite plus Nitrate Total (as N) 00630 Composite SM194500-N 0.08 3.23 mg/1 Total Kjeldahl Nitrogen 00625 Composite SM194500-N 0.5 5.46 mg/1 Oil and Grease 00556 Grab 5520B 2001 1 3.6 mg/1 Total Phosphorus C0665 Composite EPA 200.7 0.02 1.41 mg/1 Total Dissolved Solids 70295 Composite 2540C 1997 1 128 mg/1 Hardness 00900 Composite 2340B 1997 0.03 43.9 mg/1 ldetals (fot af're2bve,�a6le�jr cpaacde.an$ i totes Antimony 01097 Composite EPA 200.7 1994 0.01 <0.01 mg/1 Arsenic 01002 Composite EPA 200.7 1994 0.01 <0.01 mg/1 Beryllium 01012 Composite EPA 200.7 1994 0.001 <0.001 mg/1 Cadmium 01027 Composite EPA 200.7 1994 0.0002 <0.00002 mg/1 Chromium 01034 Composite EPA 200.7 1994 0.001 <0.001 mg/1 Copper 01042 Composite EPA 200.7 1994 0.001 0.003 mg/1 Lead 01051 Composite EPA 200.7 1994 0.01 <0.01 mg/1 Mercury (Method 1631E) COMER Composite EPA 1631E 3.18 1 ng/1 Nickel 01067 Composite EPA 200.7 1994 0.001 <0.001 mg/1 Selenium 01147 Composite EPA 200.7 1994 0.01 <0.01 mg/1 Silver 01077 Composite EPA 200.7 1994 0.001 <0.001 mg/1 Thallium 01059 Composite EPA 200.7 1994 0.001 <0.001 mg/1 Zinc 01092 Composite EPA 200.7 1994 0.001 0.02 mg/1 Cyanide 00720 Grab 4500-CN-E 1 0.005 <0.005 mg/1 Total phenolic compounds 32730 Grab 420.1 0.01 0.014 mg/1 Voia'ti 6 oi<gauirconnpoYWde . . - _ _ . _ - Acrolein , 34210 Grab EPA 624 500 ,500 ug/I Acrylonitrile 34215 Grab EPA 624 500 <500 ug/1 Benzene 34030 Grab EPA 624 50 <50 ug/1 Bromoform 32104 Grab EPA 624 50 <50 ug/1 Carbon Tetrachloride 32102 Grab EPA 624 50 <50 ug/1 Chlorobenzene 34301 Grab EPA 624 50 <50 ug/1 Chlorodibromomethane 34306 Grab EPA 624 50 <50 ug/1 Chloroethane 85811 Grab EPA 624 50 <50 ug/1 2-chloroethyl vinyl ether 34576 Grab EPA 624 100 <100 ug/1 Chloroform 32106 Grab EPA 624 50 <50 ug/I Dichlorobromomethane 32101 Grab EPA 624 50 <50 ug/1 1,1-dichloroethane 34496 Grab EPA 624 50 <50 ug/1 1,2-dichloroethane 32103 Grab EPA 624 50 <50 ug/1 Trans-1,2-dichloroethylene 34546 Grab EPA 624 50 <50 ug/1 1,1-dichloroethylene 34501 Grab EPA 624 50 <50 ug/1 1,2-dichloropropane 34541 Grab EPA 624 50 <50 ug/1 1,3-dichloropropylene 77163 Grab EPA 624 50 <50 ug/1 Ethylbenzene 34371 Grab EPA 624 50 <50 ug/1 Methyl Bromide - 34413 Grab EPA 624 50 <50 ug/1 Methyl Chloride 34418 Grab EPA 624 50 <50 ug/I Methylene Chloride 34423 Grab EPA 624 50 <50 ug/1 1,1,2,2-tetrachloroethane 81549 Grab EPA 624 50 <50 ug/1 Tetrachloroethylene 34475 Grab EPA 624 . 50 <50 ug/1 Toluene 34010 Grab EPA 624 50 <50 ug/1 1,1,1-trichloroethane 34506 Grab EPA 624 50 <50 ug/1 1, 1,2-trichloroethane 34511 Grab EPA 624 50 <50 ug/I Trichloroethylene 39180 Grab EPA 624 50 <50 ug/1 Grab- EPA-624 -__ -_--. 50 __ _ ___.__ <50--..----_.___-_._ ug/1 Vinyl-Chlu,ide 39-17r5- P-ebloro-m-creso 34452 Grab EPA 625.1 0.02 <0.02 mg/1 2-chlorophenol 34586 Grab EPA 625.1 0.02 <0.02 mg/1 2,4-dichlorophenol 34601 Grab EPA 625.1 0.02 <0.02 mg/1 2,4-dimethylphenol 34606 Grab EPA 625.1 0.02 <0.02 mg/1 4,6-diniiro-o-cresol 34657 Grab EPA 625.1 0.28 <0.28 mg/1 2,4-dinitrophenol 34616 Grab EPA 625.1 0.32 <0.32 mg/1 2-nitrophenol 34591 Grab EPA 625.1 0.02 <0.02 mg/1 4-nitrophenol 34646 Grab EPA 625.1 0.16 <0.16 mg/I Pentachlorophenol 39032 Grab EPA 625.1 0.1 <0.01 mg/I Phenol 34694 Grab EPA 625.1 0.02 <0.02 mg/1 2,4,6-trichlorophenol 34621 Grab EPA 625.1 0.02 <0.02 mg/I Form - DMR- PPA-1 Page 1 Permit No. NC0025496 Outfall 001 Annual Monitoring and Pollutant Scan Month MARCH Year 2019 Pgcame(btr #ode Bo, lia8dgticaZMet 4d aantta�lon7e+ret Saatl cl4 p Uieiisofihxe asucemeatr Baas-nepi +ait edmpoiftikds _ . , r _. , , .,. �0.02 Acenaphthene 34205 Grab EPA 625.1 <0.02 mg/1 Acenaphthylene - 34200 Grab EPA 625.1 0.02 <0.02 mg/1 Antbracene CO220 Grab EPA 625.1 0.02 <0.02 mg/1 Benzidine 39120 Grab EPA 625.1 0.34 <0.34 mg/1 Benzo(a)anthracene 34526 Grab EPA 625.1 0.02 <0.02 mg/1 Benzo(a)pyrene 34247 Grab EPA 625.1 0.02 <0.02 mg/1 3,4 benzofluoranthene 34230 Grab EPA 625.1 0.02 <0.02 mg/1 Benzo(gbi)perylene 34521 Grab EPA 625.1 0.06 <0.06 mg/1 Benzo(k)fluoranthene 34242 Grab EPA 625.1 0.02 <0.02 mg/1 Bis (2-chloroethoxy) methane 34278 Grab EPA 625.1 0.02 <0.02 mg/I Bis (2-chloroethyl) ether 34273 Grab EPA 625.1 0.02 <0.02 tag/1 Bis (2-chloroisopropyl) ether 34283 Grab EPA 625.1 0.02 <0.02 mg/I Bis (2-ethylhexyl) phthalate 39100 Grab EPA 625.1 0.32 <0.32 mg/1 4-bromophenyl phenyl ether 34636 Grab EPA 625.1 0.02 - <0.02 mg/1 Butyl benzyl phthalate 34292 Grab EPA 625.1 0.04 <0.04 mg/1 2-chloronaphthalene 34581 Grab EPA 625.1 0.02 <0.02 mg/1 4-chlorophenyl phenyl ether 34641 Grab EPA 625.1 0.02 <0.02 mg/1 Chrysene 34320 Grab EPA 625.1 0.02 <0.02 mg/1 Di-n-butyl phthalate 39110 Grab EPA 625.1 0.02 <0.02 mg/1 Di-n-octyl phthalate 34596 Grab EPA 625.1 0.12 <0.12 mg/1 Drbenzo(a,h)anthracene 34556 Grab EPA 625.1 0.02 <0.02 mg/1 1,2-dichlorobenzene 34536 Grab EPA 625.1 0.02 <0.02 mg/1 1,3-dichlorobenzene 34566 Grab EPA 625.1 0.02 <0.02 mg/1 1,4-dichlorobenzene 34571 Grab EPA 625.1 0.02 <0.02 mg/1 3,3-dichlorobenzidine 34631 Grab EPA 625.1 0.24 <0.24 mg/1 Diethyl phthalate 34336 Grab EPA 625.1 0.02 <0.02 mg/1 Dimethyl phthalate 34341 Grab EPA 625.1 0.02 <0.02 mg/1 2,4-dinitrotoluene 34611 Grab EPA 625.1 0.02 <0.02 mg/I 2,6-dinitrotoluene C0626 Grab EPA 625.1 0.02 <0.02 mg/1 1,2-diphenylhydrazine 34346 Grab EPA 625.1 0.08 <0.08 mg/I Fluoranthene C0376 Grab EPA 625.1 0.02 <0.02 mg/1 Fluorene 34381 Grab EPA 625.1 0.02 <0.02 mg/1 Hexachlorobenzene C0700 Grab EPA 625.1 0.02 <0.02 mg/1 Hexorhlorobutadiene 39702 Grab EPA 625.1 0.02 <0.02 mg/1 Hexachlorocyclo-pentadiene 34386 Grab EPA 625.1 0.24 <0.24 mg/1 Hexachloroethane 34396 Grab EPA 625.1 0.02 <0.02 mg/1 lndeno(1,2,3-cd)pyrene 34403 Grab EPA 625.1 0.056 <0.056 mg/1 Isophorone 34408 Grab EPA 625.1 0.02 <0.02 mg/1 Naphthalene - 34696 Grab EPA 625.1 0.02 <0.02 mg/1 Nitrobenzene 34447 Grab EPA 625.1 0.02 <0.02 mg/I N-nitrosodi-n-propylamine 34428 Grab EPA 625.1 0.02 <0.02 mg/1 N-nitrosodimethylamine 34438 Grab EPA 625.1 0.02 <0.02 mg/1 N-nitrosodiphenylamine 34433 Grab EPA 625.1 0.02 <0.02 mg/1 Phenanthrene 34461 Grab EPA 625.1 0.02 <0.02 mg/1 Pyrene 34469 Grab EPA 625.1 0.02 <0.02 mg/I 1,2,4,-trichlorobenzene 34551 Grab EPA 625.1 0.02 <0.02 mg/1 "I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who managed the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations." Auth Signature �I-3o- 19 7 Date Form - DMR- PPA-1 Page 2 [External] Lincolnton WWTP, NPDES Permit # NC0025496 Donald Burkey <dburkey@lincolntonnc.org> Fri 4/30/2021 13:07 To: Yitbarek, Diana <diana.yitbarek@ncdenr.gov> �l 3 attachments (11 MB) Lincolnton WWTP Annual Pollutant Scan Sept 2017.pdf; Lincolnton WWTP Annual Pollutant Scan Dec 2018.pdf; Lincolnton WWTP Annual Pollutant Scan March 2019.pdf; CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to Report Spam. Diana, I am supplying some of the information that you had requested for our NPDES Permit Renewal. I have attached the 2017, 2018 and 2019 Annual Monitoring and Pollutant Scans to this email. I will be submitting more of the requested information in separate emails, as our system has a hard time sending multiple attachments. Please let me know if you have any questions about the information provided. Also, this is my new email address for the City of Lincolnton. Thank you, Donald A. Burkey, Jr., Superintendent City of Lincolnton Waste Water Treatment Plant P.O. Box 617 608 W. Hwy 150 Bypass Lincolnton, NC 28093 Phone: (704) 736-8960 Fax : (704) 732-6137 L,Lincolnton Logo 2017 jpg From: Yitbarek, Diana[mailto:diana.yitbarek@ncdenr.gov] Sent: Thursday, April 08, 2021 1:46 PM To: Donald A. Burkey Cc: Basinger, Corey Subject: NC0025496, Lincolnton WWTP, City of Lincolnton, Lincoln County, MRO Good afternoon, Dear Donald Burkey I am the assigned permit writer for the subject line facility. I look forward to working with you to complete this permit renewal. Thanks for submitting the February 10, 2020, NPDES permit application. I will appreciate your support with some additional/revised information: 1. Please submit the signed Annual Monitoring and Pollutant Scans for 2017, 2018, and 2019. 2. Please complete this form to meet the latest application requirements for the updated application form 2A. 3. Please provide coordinates for the outfall, upstream, and downstream location points (approximate coordinates to the actual location from an online map would suffice). a. The current outfall coordinate in the permit (35°26134"N 81°15139"W) and the coordinate in the permit application renewal (35°26'26"N 81°16144"W) appears to be off. The application package included a map depicting the outfall (pg. 56). Would it be ok if we update the coordinate to 35°27'02.5"N 81°15'38.8"W? Would this be closer to the actual location? 4. If there are additional pollutants with certified methods to be reported, please submit this Chemical Addendum. Please provide this information by May 7, 2021. If you need more time, please let me know. Thanks for your continued cooperation with the NPDES program and your work protecting public health and the environment. Please let me know if you have any questions. -Diana Diana Yitbarek Engineer T: +1-919-707-9130 M: +1-415-735-5582 diana.yitbarek@ncdenr.gov NPDES Municipal Permitting Unit NC Department of Environmental Quality/ Division of Water Resources Mailing: 1617 Mail Service Center, Raleigh, NC 27699-1617 Physical: 512 N. Salisbury Street, Rm. 925T, Raleigh, NC 27604-1170 *Please check with the appropriate staff before visiting our offices, as we may be able to handle your requests by phone or email. We can also be available via Microsoft Teams if requested. Thanks for your patience and stay safe. Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties. Re: [External] Lincolnton WWTP Outfall Coordinates Yitbarek, Diana <diana.yitbarek@ncdenr.gov> Wed 5/5/2021 11:00 To: Donald Burkey <dburkey@lincolntonnc.org> Bcc: Montebello, Michael J <Michael.Montebello@ncdenr.gov> Thank you, Donald. I will update the outfall coordinate in the permit as 35°27'02.5"N 81°15'38.8"W. Regarding the downstream coordinate: The permit only requires upstream hardness, but the fact sheet mentioned color monitoring in one upstream and two downstream locations. The Facility has followed what was required in the permit. I will do some digging on this and update you if there are any changes to the upstream and downstream monitoring based on the regulations. Is the facility part of a monitoring coalition program or a river association? -Diana Diana Yitbarek Engineer T: +1-919-707-9130 diana.yitbarek@ncdenr.gov NPDES Municipal Permitting Unit NC Department of Environmental Quality/ Division of Water Resources Mailing: 1617 Mail Service Center, Raleigh, NC 27699-1617 Physical: 512 N. Salisbury Street, Rm. 925T, Raleigh, NC 27604-1170 „OWnnIt l al Em.rannFMrl+l 041A11Y *Please check with the appropriate staff before visiting our offices, as we may be able to handle your requests by phone or email. We can also be available via Microsoft Teams if requested. Thanks for your patience and stay safe. Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties. From: Donald Burkey <dburkey@lincolntonnc.org> Sent: Friday, April 30, 2021 14:12 To: Yitbarek, Diana <diana.yitbarek@ncdenr.gov> Subject: [External] Lincolnton WWTP Outfall Coordinates CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to Report Spam. Diana, I have attached a photo of our WWTP Outfall and a picture of the coordinates taken from an iPhone standing about 25 feet from the outfall entering the South Fork River. Your suggested coordinates were dead on. We will be taking similar photos at our upstream and downstream locations. However, we currently do not do any downstream sampling. Please let me know if you have any questions. Thanks, Donald A. Burkey, Jr., Superintendent City of Lincolnton Waste Water Treatment Plant P.O. Box 617 608 W. Hwy 150 Bypass Lincolnton, NC 28093 Phone: (704) 736-8960 Fax : (704) 732-6137 ,Lincolnton Logo 2017 jpg Permit No. NC0025496 NPDES Implementation of Instream Dissolved Metals Standards - Freshwater Standards The NC 2007-2015 Water Quality Standard (WQS) Triennial Review was approved by the NC Environmental Management Commission (EMC) on November 13, 2014. The US EPA subsequently approved the WQS revisions on April 6, 2016, with some exceptions. Therefore, metal limits in draft permits out to public notice after April 6, 2016 must be calculated to protect the new standards - as approved. Table 1. NC Dissolved Metals Water Quality Standards/Aquatic Life Protection Parameter Acute FW, µg/1 (Dissolved) Chronic FW, µg/1 (Dissolved) Acute SW, µg/1 (Dissolved) Chronic SW, µg/1 (Dissolved) Arsenic 340 150 69 36 Beryllium 65 6.5 --- --- Cadmium Calculation Calculation 40 8.8 Chromium III Calculation Calculation --- --- Chromium VI 16 11 1100 50 Copper Calculation Calculation 4.8 3.1 Lead Calculation Calculation 210 8.1 Nickel Calculation Calculation 74 8.2 Silver Calculation 0.06 1.9 0.1 Zinc Calculation Calculation 90 81 Table 1 Notes: 1. FW= Freshwater, SW= Saltwater 2. Calculation = Hardness dependent standard 3. Only the aquatic life standards listed above are expressed in dissolved form. Aquatic life standards for Mercury and selenium are still expressed as Total Recoverable Metals due to bioaccumulative concerns (as are all human health standards for all metals). It is still necessary to evaluate total recoverable aquatic life and human health standards listed in 15A NCAC 2B.0200 (e.g., arsenic at 10 µg/1 for human health protection; cyanide at 5 µg/L and fluoride at 1.8 mg/L for aquatic life protection). Table 2. Dissolved Freshwater Standards for Hardness -Dependent Metals The Water Effects Ratio (WER) is equal to one unless determined otherwise under 15A NCAC 02B .0211 Subparagraph (11)(d) Metal NC Dissolved Standard, µg/I Cadmium, Acute WER*{1.1366724ln hardness](0.041838)} - e^{0.9151 [ln hardness]-3.1485} Cadmium, Acute Trout waters WER*{1.1366724ln hardness](0.041838)} - e^{0.9151[ln hardness]-3.6236} Cadmium, Chronic WER*{1.1016724ln hardness](0.041838)} - e^{0.7998[ln hardness]-4.4451} Chromium III, Acute WER*0.316 - e^{0.8190[ln hardness]+3.7256} Chromium III, Chronic WER*0.860 • e^{0.8190[ln hardness]+0.6848} Copper, Acute WER*0.960 • e^{0.9422[ln hardness]-1.700} Copper, Chronic WER*0.960 • e^{0.8545[ln hardness]-1.702} Lead, Acute WER*{1.462034ln hardness](0.145712)} • e^{1.273[ln hardness]-1.460} Lead, Chronic WER*{1.462034ln hardness](0.145712)} • e^{1.273[ln hardness]-4.705} Nickel, Acute WER*0.998 • e^{0.8460[ln hardness]+2.255} Nickel, Chronic WER*0.997 • e^{0.8460[ln hardness]+0.0584} Page 1 of 4 Permit No. NC0025496 Silver, Acute WER*0.85 • e^{1.72[ln hardness]-6.59} Silver, Chronic Not applicable Zinc, Acute WER*0.978 • e^{0.8473[ln hardness]+0.884} Zinc, Chronic WER*0.986 • e^{0.8473[ln hardness]+0.884} General Information on the Reasonable Potential Analysis (RPA) The RPA process itself did not change as the result of the new metals standards. However, application of the dissolved and hardness -dependent standards requires additional consideration in order to establish the numeric standard for each metal of concern of each individual discharge. The hardness -based standards require some knowledge of the effluent and instream (upstream) hardness and so must be calculated case -by -case for each discharge. Metals limits must be expressed as `total recoverable' metals in accordance with 40 CFR 122.45(c). The discharge -specific standards must be converted to the equivalent total values for use in the RPA calculations. We will generally rely on default translator values developed for each metal (more on that below), but it is also possible to consider case -specific translators developed in accordance with established methodology. RPA Permitting Guidance/WQBELs for Hardness -Dependent Metals - Freshwater The RPA is designed to predict the maximum likely effluent concentrations for each metal of concern, based on recent effluent data, and calculate the allowable effluent concentrations, based on applicable standards and the critical low -flow values for the receiving stream. If the maximum predicted value is greater than the maximum allowed value (chronic or acute), the discharge has reasonable potential to exceed the standard, which warrants a permit limit in most cases. If monitoring for a particular pollutant indicates that the pollutant is not present (i.e. consistently below detection level), then the Division may remove the monitoring requirement in the reissued permit. 1. To perform a RPA on the Freshwater hardness -dependent metals the Permit Writer compiles the following information: • Critical low flow of the receiving stream, 7Q10 (the spreadsheet automatically calculates the 1Q10 using the formula 1Q10 = 0.843 (s7Q10, cfs) 0.993 • Effluent hardness and upstream hardness, site -specific data is preferred • Permitted flow • Receiving stream classification 2. In order to establish the numeric standard for each hardness -dependent metal of concern and for each individual discharge, the Permit Writer must first determine what effluent and instream (upstream) hardness values to use in the equations. The permit writer reviews DMR's, Effluent Pollutant Scans, and Toxicity Test results for any hardness data and contacts the Permittee to see if any additional data is available for instream hardness values, upstream of the discharge. If no hardness data is available, the permit writer may choose to do an initial evaluation using a default hardness of 25 mg/L (CaCO3 or (Ca + Mg)). Minimum and maximum limits on the hardness value used for water quality calculations are 25 mg/L and 400 mg/L, respectively. If the use of a default hardness value results in a hardness -dependent metal showing reasonable potential, the permit writer contacts the Permittee and requests 5 site -specific effluent and upstream hardness samples over a period of one week. The RPA is rerun using the new data. Page 2of4 Permit No. NC0025496 The overall hardness value used in the water quality calculations is calculated as follows: Combined Hardness (chronic) = (Permitted Flow, cfs *Avg. Effluent Hardness, mg/L) + (s7Q10, cfs *Avg. Upstream Hardness, mg/ (Permitted Flow, cfs + s7Q10, cfs) The Combined Hardness for acute is the same but the calculation uses the 1Q10 flow. 3. The permit writer converts the numeric standard for each metal of concern to a total recoverable metal, using the EPA Default Partition Coefficients (DPCs) or site -specific translators, if any have been developed using federally approved methodology. EPA default partition coefficients or the "Fraction Dissolved" converts the value for dissolved metal at laboratory conditions to total recoverable metal at in -stream ambient conditions. This factor is calculated using the linear partition coefficients found in The Metals Translator: Guidance for Calculating a Total Recoverable Permit Limit from a Dissolved Criterion (EPA 823-B-96-007, June 1996) and the equation: Cdiss = 1 Ctotal 1 + { LKPoI �SS(1+a)l r 1 0-6l } Where: ss = in -stream suspended solids concentration [mg/1], minimum of 10 mg/L used, and Kpo and a = constants that express the equilibrium relationship between dissolved and adsorbed forms of metals. A list of constants used for each hardness -dependent metal can also be found in the RPA program under a sheet labeled DPCs. 4. The numeric standard for each metal of concern is divided by the default partition coefficient (or site -specific translator) to obtain a Total Recoverable Metal at ambient conditions. In some cases, where an EPA default partition coefficient translator does not exist (ie. silver), the dissolved numeric standard for each metal of concern is divided by the EPA conversion factor to obtain a Total Recoverable Metal at ambient conditions. This method presumes that the metal is dissolved to the same extent as it was during EPA's criteria development for metals. For more information on conversion factors see the June, 1996 EPA Translator Guidance Document. 5. The RPA spreadsheet uses a mass balance equation to determine the total allowable concentration (permit limits) for each pollutant using the following equation: Ca = (s7Q10 + Qw) (Cwqs) — (s7Q10) (Cb) Qw Where: Ca = allowable effluent concentration (µg/L or mg/L) Cwqs = NC Water Quality Standard or federal criteria (µg/L or mg/L) Cb = background concentration: assume zero for all toxicants except NH3* (µg/L or mg/L) Qw = permitted effluent flow (cfs, match s7Q10) s7Q10 = summer low flow used to protect aquatic life from chronic toxicity and human health through the consumption of water, fish, and shellfish from noncarcinogens (cfs) * Discussions are on -going with EPA on how best to address background concentrations Flows other than s7Q10 may be incorporated as applicable: 1Q10 = used in the equation to protect aquatic life from acute toxicity Page 3 of 4 Permit No. NC0025496 QA = used in the equation to protect human health through the consumption of water, fish, and shellfish from carcinogens 30Q2 = used in the equation to protect aesthetic quality 6. The permit writer enters the most recent 2-3 years of effluent data for each pollutant of concern. Data entered must have been taken within four and one-half years prior to the date of the permit application (40 CFR 122.21). The RPA spreadsheet estimates the 95th percentile upper concentration of each pollutant. The Predicted Max concentrations are compared to the Total allowable concentrations to determine if a permit limit is necessary. If the predicted max exceeds the acute or chronic Total allowable concentrations, the discharge is considered to show reasonable potential to violate the water quality standard, and a permit limit (Total allowable concentration) is included in the permit in accordance with the U.S. EPA Technical Support Document for Water Quality -Based Toxics Control published in 1991. 7. When appropriate, permit writers develop facility specific compliance schedules in accordance with the EPA Headquarters Memo dated May 10, 2007 from James Hanlon to Alexis Strauss on 40 CFR 122.47 Compliance Schedule Requirements. 8. The Total Chromium NC WQS was removed and replaced with trivalent chromium and hexavalent chromium Water Quality Standards. As a cost savings measure, total chromium data results may be used as a conservative surrogate in cases where there are no analytical results based on chromium III or VI. In these cases, the projected maximum concentration (95th %) for total chromium will be compared against water quality standards for chromium III and chromium VI. 9. Effluent hardness sampling and instream hardness sampling, upstream of the discharge, are inserted into all permits with facilities monitoring for hardness -dependent metals to ensure the accuracy of the permit limits and to build a more robust hardness dataset. 10. Hardness and flow values used in the Reasonable Potential Analysis for this permit included: Parameter Value Comments (Data Source) Average Effluent Hardness (mg/L) [Total as, CaCO3 or (Ca+Mg)] 37.61 Data provided in DMRs Average Upstream Hardness (mg/L) [Total as, CaCO3 or (Ca+Mg)] 19.5 Data provided in DMRs 7Q10 summer (cfs) 77.0 NPDES Files 1Q10 (cfs) 62.97 Calculated in RPA Permitted Flow (MGD) 3.5 NPDES permit application Date: 5/20/2021 Permit Writer: Diana Yitbarek Page 4 of 4 United States Environmental Protection Agency EPA Washington, D.C. 20460 Water Compliance Inspection Report Form Approved. OMB No. 2040-0057 Approval expires 8-31-98 Section A: National Data System Coding (i.e., PCS) Transaction 1 IN I 211I1111 Code NPDES yr/mo/day Inspection 2[ I 3 I NC0025496 111 121 21/03/23 117 Type 181 I II 111111111 Inspector Fac Type 191 g I 2011 111111111 II 1111111 I I II I 66 11 1 Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA Reserved 67I1.0 I 7° I4 I 71 IN I 72 I N I 73I I 174 I 751 I 1 1 I I I I I I 180 Section B: Facility Data Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include POTW name and NPDES permit Number) Lincolnton WWTP 550 W Hwy 150 Bypass Lincolnton NC 28092 Entry Time/Date 09:20AM 21/03/23 Permit Effective Date 16/11/01 Exit Time/Date 11:OOAM 21/03/23 Permit Expiration Date 20/07/31 Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) /// Donald A Burkey/ORC/704-736-8960/ Other Facility Data Name, Address of Responsible Official/Title/Phone and Fax Number Contacted Stephen H Peeler,PO Box 617 Lincolnton NC 280930617/Public Works Director/704-736-8940/7047368959 No Section C: Areas Evaluated During Inspection (Check only those areas evaluated) Permit Flow Measurement Operations & Maintenar Records/Reports Self -Monitoring Progran Sludge Handling Dispo: Facility Site Review Effluent/Receiving Wate Laboratory Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) (See attachment summary) Name(s) and OriATuvia Signature(s) of Inspector(s) Agency/Office/Phone and Fax Numbers Date 4/1/2021 (—DocuSigned by: DWR/MRO WQ/704-663-1699/ CC- BB057A2DE017498_ Signature of Ma rAdflliftviewer Agency/Office/Phone and Fax Numbers Date Andrew Pitn r A44444`' N P4415M/R/MRO WQ/704-663-1699 Ext.2180/ 4.1.21 F161FB69A2D84A3... EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page# 1 NPDES yr/mo/day 31 NC0025496 111 121 21/03/23 I17 Inspection Type 18 [j 1 Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) Page# 2 Permit: NC0025496 Inspection Date: 03/23/2021 Owner - Facility: Lincolnton WWTP Inspection Type: Compliance Evaluation Permit Yes No NA NE (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: The subject permit expired on 7/31/2020, renwall application has been submitted .The City implements an approved Industrial Pretreatment Program. Record Keeping Are records kept and maintained as required by the permit? Is all required information readily available, complete and current? Are all records maintained for 3 years (lab. reg. required 5 years)? Are analytical results consistent with data reported on DMRs? Is the chain -of -custody complete? Dates, times and location of sampling Name of individual performing the sampling Results of analysis and calibration Dates of analysis Name of person performing analyses Transported COCs Are DMRs complete: do they include all permit parameters? Has the facility submitted its annual compliance report to users and DWQ? Yes No NA NE • ❑ DE • ❑ DO • ❑ OD • ❑ ❑ ❑ ▪ ❑ ❑ ❑ • ❑ OD • ❑ ❑ ❑ (If the facility is = or > 5 MGD permitted flow) Do they operate 24/7 with a certified operatc • ❑ ❑ ❑ on each shift? Is the ORC visitation log available and current? • ❑ ❑ ❑ Is the ORC certified at grade equal to or higher than the facility classification? • ❑ ❑ ❑ Is the backup operator certified at one grade less or greater than the facility classification' • ❑ ❑ ❑ Is a copy of the current NPDES permit available on site? • ❑ ❑ ❑ Facility has copy of previous year's Annual Report on file for review? ❑ ❑ ❑ • Comment: The records reviewed during the inspection were organized and well maintained. DMRs, COCs, ORC visitation logs, bench sheets, and calibration logs, were reviewed for December 2020. Laboratory Yes No NA NE Page# 3 Permit: NC0025496 Inspection Date: 03/23/2021 Owner - Facility: Lincolnton WWTP Inspection Type: Compliance Evaluation Laboratory Are field parameters performed by certified personnel or laboratory? Are all other parameters(excluding field parameters) performed by a certified lab? # Is the facility using a contract lab? # Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees Celsius)? Incubator (Fecal Coliform) set to 44.5 degrees Celsius+/- 0.2 degrees? Incubator (BOD) set to 20.0 degrees Celsius +/- 1.0 degrees? Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • Comment: Influent and effluent analyses (including field parameters) are performed under the City's on -site certified laboratory (#153). Due to Covid-19 the laboratory instruments were not inspected.The laboratory instrumentation used for field analyses appeared to be properly calibrated and documented. The following commercial laboratories (NC certified) have been contracted to provide analytical support:Prism Labs (COD, total nitrogen, total phosphorusBlue Ridge Labs (metals, cyanide, Oil and Grease, Phenols, Bis-Phalte, HardnessTwo Rivers Utilities: Low level mercury)Meritech: toxicity pollutant scan Influent Sampling # Is composite sampling flow proportional? Is sample collected above side streams? Is proper volume collected? Is the tubing clean? # Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees Celsius)? Is sampling performed according to the permit? Yes No NA NE ▪ ❑ ❑ ❑ • ❑ ❑ ❑ ▪ ❑ ❑ ❑ ▪ ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Comment: The subject permit requires influent composite BOD and TSS samples. The facility staff perform and document monthly aliquot verifications Effluent Sampling Yes No NA NE 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: The subject permit requires composite and grab effluent samples. The facility staff perform and document monthly aliquot verifications on the sampler used for daily sampling Page# 4 Permit: NC0025496 Inspection Date: 03/23/2021 Owner - Facility: Lincolnton WWTP Inspection Type: Compliance Evaluation Upstream / Downstream Sampling Yes No NA NE Is the facility sampling performed as required by the permit (frequency, sampling type, anc • ❑ ❑ ❑ sampling location)? Comment: 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? Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ Comment: The facility appeared to be adequately treating wastewater at the time of the inspection. The facility staff incorporate a comprehensive process control program with all measurements being properly documented and maintained on-site.The facility is equipped with a SCADA system to assist the staff with the operation of the treatment units/processes. The audible and visual alarms are tested (and documented) on a monthly basis. Pump Station - Influent Is the pump wet well free of bypass lines or structures? Is the wet well free of excessive grease? 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? Yes No NA NE ▪ ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ▪ ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Comment: The influent passes through a muffin monster prior to entering the wet well. at the time of the inspection 4/5 of pump were in service. Flow Measurement - Influent # Is flow meter used for reporting? Is flow meter calibrated annually? Is the flow meter operational? (If units are separated) Does the chart recorder match the flow meter? Yes No NA NE ❑•❑ ❑ ▪ ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ED Comment: The flow meter is calibrated annually and was last calibrated on 4/15/2020 by Clearwater, Inc Bar Screens Type of bar screen a.Manual Yes No NA NE • Page# 5 Permit: NC0025496 Inspection Date: 03/23/2021 Owner - Facility: Lincolnton WWTP Inspection Type: Compliance Evaluation Bar Screens 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? Yes No NA NE • • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Comment: The bar screenings are disposed into an open dumpster equipped with a drain plug. Grit Removal Type of grit removal a.Manual b.Mechanical Is the grit free of excessive organic matter? Is the grit free of excessive odor? # Is disposal of grit in compliance? Comment: Screenings and grit are disposed at the County Landfill. Oxidation Ditches Are the aerators operational? Are the aerators free of excessive solids build up? # 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? Are settleometer results acceptable (> 30 minutes)? Is the DO level acceptable?(1.0 to 3.0 mg/I) Are settelometer results acceptable?(400 to 800 ml/I in 30 minutes) Comment: Yes No NA NE • • ❑ ❑ ❑ • ❑ ❑ ❑ ▪ ❑ ❑ ❑ Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ❑ ❑ • ❑ ❑ ❑ • Aeration Basins Yes No NA NE Mode of operation Ext. Air Type of aeration system Diffused Is the basin free of dead spots? • ❑ ❑ ❑ Are surface aerators and mixers operational? • ❑ ❑ ❑ Are the diffusers operational? • ❑ ❑ ❑ Page# 6 Permit: NC0025496 Inspection Date: 03/23/2021 Owner - Facility: Lincolnton WWTP Inspection Type: Compliance Evaluation Aeration Basins 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) Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ ▪ El El El • ❑ ❑ ❑ Comment: Three of four aeration basins were in service. The 4th was used has a digester due to long wet season. Secondary Clarifier Yes No NA NE 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: one of the two clarfiers was out for repaires. Pumps-RAS-WAS Are pumps in place? Are pumps operational? Are there adequate spare parts and supplies on site? Comment: Flow Measurement - Effluent # Is flow meter used for reporting? Is flow meter calibrated annually? Is the flow meter operational? (If units are separated) Does the chart recorder match the flow meter? ■ ❑ ❑ ❑ ▪ ❑ ❑ ❑ ■ ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ▪ ❑ ❑ ❑ ▪ ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ❑ ❑ • Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Comment: The flow meter is calibrated annually and was last calibrated on 4/15/2020 by Clearwater, Inc Page# 7 Permit: NC0025496 Inspection Date: 03/23/2021 Owner - Facility: Lincolnton WWTP Inspection Type: Compliance Evaluation Disinfection -Liquid Is there adequate reserve supply of disinfectant? (Sodium Hypochlorite) Is pump feed system operational? Is bulk storage tank containment area adequate? (free of leaks/open drains) 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: Yes No NA NE • ❑ ❑ ❑ ▪ ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ❑ ❑ • • ❑ ❑ ❑ • ❑ ❑ ❑ De -chlorination Yes No NA NE Type of system ? Liquid Is the feed ratio proportional to chlorine amount (1 to 1)? ❑ ❑ • ❑ Is storage appropriate for cylinders? ❑ ❑ • ❑ # Is de -chlorination substance stored away from chlorine containers? • ❑ ❑ ❑ Are the tablets the proper size and type? ❑ ❑ ❑ Comment: Aqueous sodium bisulfite is used for dechlorination. Are tablet de -chlorinators operational? ❑ ❑ • ❑ Number of tubes in use? Comment: Chemical Feed Is containment adequate? Is storage adequate? Are backup pumps available? Is the site free of excessive leaking? Comment: Effluent Pipe Is right of way to the outfall properly maintained? Are the receiving water free of foam other than trace amounts and other debris? If effluent (diffuser pipes are required) are they operating properly? Comment: Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ▪ ❑ ❑ ❑ Yes No NA NE ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • Page# 8 Permit: NC0025496 Inspection Date: 03/23/2021 Owner - Facility: Lincolnton WWTP Inspection Type: Compliance Evaluation Anaerobic Digester Type of operation: Is the capacity adequate? # Is gas stored on site? Is the digester(s) free of tilting covers? Is the gas burner operational? Is the digester heated? Is the temperature maintained constantly? Is tankage available for properly waste sludge? Yes No NA NE Floating cover • ❑ ❑ ❑ ❑ ❑ ❑ • ❑ ■ ❑ ❑ ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • • ❑ ❑ ❑ Comment: The facility is equipped with three anaerobic digesters and three storage tanks. One of the digesters was out of order due to a tilting cover that made the cover come out of the brackets. The tilting cover could cause a catastrophic failure to the structure and need to either be repaired or taken out, this was noted on the previous inspection (5/30/2019). Solids Handling Equipment Is the equipment operational? Is the chemical feed equipment operational? Is storage adequate? Is the site free of high level of solids in filtrate from filter presses or vacuum filters? Is the site free of sludge buildup on belts and/or rollers of filter press? Is the site free of excessive moisture in belt filter press sludge cake? The facility has an approved sludge management plan? Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • • ❑ ❑ ❑ Comment: Waste activated sludge (WAS ) is thickened by a DAF unit prior to being pumped to the anaerobic digesters. Drying Beds Is there adequate drying bed space? Is the sludge distribution on drying beds appropriate? Are the drying beds free of vegetation? # Is the site free of dry sludge remaining in beds? Is the site free of stockpiled sludge? Is the filtrate from sludge drying beds returned to the front of the plant? # Is the sludge disposed of through county landfill? # Is the sludge land applied? (Vacuum filters) Is polymer mixing adequate? Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ ▪ ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ Page# 9 Permit: NC0025496 Inspection Date: 03/23/2021 Owner - Facility: Lincolnton WWTP Inspection Type: Compliance Evaluation Drying Beds Yes No NA NE Comment: Land application is the primary disposal of the bio-solids; however, drying beds are used during emergency situations when wet weather prevents land application (drying beds were being used at the time of the inspection). The drying bed sections currently being used appeared to be well maintained Standby Power Is automatically activated standby power available? Is the generator tested by interrupting primary power source? Is the generator tested under load? Was generator tested & operational during the inspection? Do the generator(s) have adequate capacity to operate the entire wastewater site? Is there an emergency agreement with a fuel vendor for extended run on back-up power? Is the generator fuel level monitored? Yes No NA NE • ❑ ❑ ❑ IN ❑ ❑ ❑ ▪ El El El • ❑ ❑ • • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Comment: The facility is equipped with two backup generators. Both generators are tested monthly (nol under load) and serviced twice per year by a contracted company. The contracted company tests the generators under load during each servicing event Page# 10 ROY COOPER Governor JOHN NICHOLSON Interim Secretary S. DANIEL SMITH Director MEMORANDUM To: NORTH CAROLINA Environmental Quality June 22, 2021 Clinton Cook NC DEQ / DWR / Public Water Supply Mooresville Regional Office From: Diana Yitbarek NC DEQ / DWR / Municipal Permitting Unit Subject: Review of Draft NPDES Permit NC0025496 Lincolnton WWTP Outfall 001 [35°27'02.5"N 81°15'38.8"W]/ South Fork Catawba River Lincoln County Please indicate below your agency's position or viewpoint on the draft permit and return this form by July 22, 2021. If you have any questions on the draft permit, please contact me at 919-707-9130 or via e-mail [diana.yitbarek@ncdenr.gov]. RESPONSE: (Check one) X §§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§ Concur with the issuance of this permit provided the facility is operated and maintained properly, the stated effluent limits are met prior to discharge, and the discharge does not contravene the designated water quality standards. Concurs with issuance of the above permit, provided the following conditions are met: * * I have no appreciable expertise in implementation of the Clean Water Act requirements and have minimal understanding of the information provided. As a result, I have no basis for opposing the permit. Opposes the issuance of the above permit, based on reasons stated below, or attached: aha!a_Signature:' v Date: July 22, 2021 North Carolina Department of Environmental Quality 1 Division of Water Resources 512 North Salisbury Street 11617 Mail Service Center I Raleigh, North Carolina 27699-1617 919.707.9000 LINCOLN TIMES -NEWS P.O. Box 40 Lincolnton, North Carolina 28093-0040 Telephone (704) 735-3031 I, Jerry Leedy, Publisher of the Lincoln Times -News, do hereby acknowledge that the attached advertisement was published in the Lincoln Times -News on the following Dates: J ne 25, 2021 This is the 25th of June, 2021. WITNESS .. J 17.1g Efif.l My Commission Expires: 05/19/2022 Copy Public Notice North Carolina Environmental Managemen ComissonINPDES Unit 1617 Mail Service Center Raleigh, NC 27699-1617 Notice of Intent to Issue a NPDI Wastewater Permit NC0025496 Ci of Lineolnton WWTP and NC00845 Lince1n County WTP The North Carolit Environmental Management Commissic proposes to issue a NPDES wastewat discharge permit to the person(s) listed belo' Written comments regarding the propost permit will be accepted until 30 days after ti publish date of this notice. The Director i the NC Division of Water Resources (DWI may hold a public hearing should there be significant degree of public interest. Plea mail comments and/or information requests i DWR at the above address. Interested persor may visit the DWR at 512 N. Salisbury Stec Raleigh, NC 27604 to review infonnati.c on file. Additional information on NPDE permits and this notice may be found on of website: http://deq.nc.gov/about/division, w ater-res ourc es/water-resources-permit! wastewater-branch/npdes-wastewater/public notices,or by calling (919) 707-3601. The Cit of Lincolnton (P.O. Box 617, Lincolnton, NI 28093) has requested renewal of the NPDE Permit NC0025496 for its Wastewate Treatment Plant in Lincoln County. Thi permitted facility discharges treated domesti and pretreated industrial wastewater t South Fork Catawba River in the Catawb River Basin. Ammonia, biochemical oxyge demand, bis (2-ethylhexyl) phthalate dissolved oxygen, fecal coliform, pH, tots residual chlorine, and total suspended solid are water quality limited parameters in th permit. This discharge may affect futur allocations in this segment of the South Fora Catawba River. Lincoln County [115 V Main Street] has requested renewal of permi NC0084573 for its WTP in Lincoln County This permitted facility discharges filte backwash and sludge supertenant wastewate to Lake Norman (Little Creek Arm) in thi Catawba River Basin. Currently total residua chlorine and total suspended solids parameter are water quality limited. This discharge ma} affect future allocations in this segment o Lake Norman. IT: lone 25, 2021 NPDES/Aquifer Protection Permitting Unit Pretreatment Information Request Form PERMIT WRITER COMPLETES THIS PART: PERMIT WRITERS - AFTER you get this form back from Pretreatment Staff: Check all that apply Notify Pretreatment staff if LTMP/STMP data we Date 5/24/2021 municipal renewal X said should be on DMRs is not really there, so we Requestor Diana Yitbarek new industries can get it for you (or NOV POTW). Facility Name Lincolnton WWTP WWTP expansion - Notify Pretreatment staff if you want us to keep a Permit Number NC0025496 Speculative limits specific POC in LTMP/STMP so you will have data for Region Mooresville stream reclass. next permit renewal. - Email Pretreatment staff draft permit, fact sheet, Basin Catawba outfall relocation RPA. 7Q1 0 change - Send Pretreatment paper copy of permit (w/o other NPDES boilerplate), cover letter, final fact sheet. other Email RPA if changes. check applicable Pretreatment staff: Other Comments to Pretreatment STaff: BRD, CPF, CTB, FRB, TAR The WWTP has a design capacity of 6.0 MGD and is currently authorized to discharge 3.5 MGD (up to 4.5 MGD and 6.0 MGD upon request) into South Fork CHO, HIW, LTN, LUM, NES, NEW, ROA, YAD Catawba River, a class WS-IV waters. This Facility also two non -categorical significant industrial users (SIUs) and three categorical industrial users (ClUs) in their The Town has long-term pretreatment program. a monitoring plan (LTMP). The average industrial flow discharged by the SIUs is 1.15 MGD. Bis (2-Ethylhexyl) Phthalate and Dichlorobromomethane are new parameters with limit/monitoring PERMIT WRITER COMPLETES THIS PART: Status of Pretreatment Program (check all that apply) 1) facility has no SIU's, does have Division approved Pretreatment Program that is INACTIVE 2) facility has no SIU's, does not have Division approved Pretreatment Program _ X 3) facility has SIUs and DWQ approved Pretreatment Program (list "DEV" if program still under development) X 3a) Full Program with LTMP 3b) Modified Program with STMP _ 4) additional conditions regarding Pretreatment attached or listed below Flow, MGD Permitted Actual Time period for Actual LTMP time frame: Industrial 1.15 1.15 2017 Most recent: 3/30/2017 Uncontrollable n/a 1.51 2017 Next Cycle: 3/30/2022 POC in LTMP/ STMP Parameter of Concern (POC) Check List POC due to NPDES/ Permit Limit Required by EPA Required by 503 Sludge"" POC due to SIU""" POTW POC (Explain below)"""" STMP Effluent Freq LTMP Effluent Freq BOD NI Q / TSS NI Q Q = Quarterly NH3 NI Q M = Monthly Arsenic Q Cadmium NI Q Chromium NI NI NI Q Copper NI NI NI Q Cyanide NI Q Is all data on DMRs? Lead \I NI NI Q Yes NI Mercury NI Q NO (attach data) Molybdenum NI Q Nickel NI Q Silver NI Q Selenium NI Q Zinc NI Q Is data in spreadsheet? TN NI Q YES NI TP NI Q NO Oil and grease NI Antimony NI NI Q Hardness NI Q Bis (2-Ethylhexyl) f NI Added in this permit cycle Dichlorobromomet NI Added in this permit cycle "Always in the LTMP/STMP ** Only in LTMP/STMP if sludge land app or composte (dif POCs for incinerators) """ Only in LTMP/STMP while SIU still discharges to POTW """" Only in LTMP/STMP when pollutant is still of concern to POTW PRETREATMENT STAFF COMPLETES THIS PART: Comments to Permit Writer(ex.. explanation of any POCs: info you have on IU related investigations into NPDES problems): Bis (2-Ethylhexyl) Phthalate and Dichlorobromomethane will be added to the LTMP and HWAs. 25496 NPDES_PT.request.form.July2020 Revised: July 24, 2007