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HomeMy WebLinkAboutNC0027197_Fact Sheet_20240325DENR/DWR EXPEDITED FACT SHEET - NPDES PERMIT DEVELOPMENT NPDES Permit: NCO027197 2024 Renewal This form must be completed by Permit Writers for all expedited permits which do not require full Fact Sheets. Expedited permits are generally simple 100% domestics (e.g., schools, mobile home parks, etc.) that can be administratively renewed with minor changes, but can include facilities with more complex issues (Special Conditions, 303(d) listed water, toxicity testing, instream monitoring, compliance concerns). Facility and Stream Information Applicant/ Facility Name: City of Shelby / City of Shelby WTP Applicant Address: PO Box 207, Shelby, NC 28151 Facility Address: 801 West Grover Street, Shelby, NC 28150 Facility Class/Permit Status: Grade I Physical -Chemical WPCS / Renewal Permitted Flow (as built) 0.214n maxmonthl value) ) 0.131 MGD (monthly av Type of Waste 100% Industrial Filter Backwash from Dual Media Filters, reject water and stormwater Receiving Stream UT to First Broad River Stream Class / ID C 9-50- 28 River Basin Broad Subbasin 03-08-04 HUC 030501050702 Quad USGSToo F12SE Shelby 7Q10 Sum Win cfs 0 30Q2 cfs 0 Avg. Stream Flow (cfs) 0 IWC (%) sum/win 100 % County Cleveland Regional Office MRO Basic Information for Expedited Permit Renewal Permit Writer / Date Bradley Bennett / January 24, 2024 updated 1/31/24 Does permit need daily max NH3 limits? No Does permit need TRC limits/language? Yes - Already in permit Does permit have toxicity testing? Yes Does permit have Special Conditions? WET Requirements; Does permit have instream monitoring? Yes - Hardness Stream on 303(d) List? For w/parameter? Only for Statewide Mercury Any compliance concerns? No Issues Any modifications since last permit? One change noted in CAP - stopped use of copper sulfate to address Cu issues New expiration date: March 31, 2029 FACILITY OVERVIEW: This facility is a public water treatment plant that is 100% industrial waste and treats surface water from the First Broad River to produce finished potable water for the City of Shelby and surrounding areas. The facility is owned and operated by the City of Shelby and has a designed potable water capacity of 12 MGD and generates wastewater flows with a maximum monthly average wastewater discharge of 0.214 MGD (last three years data). The system utilizes: • Mixer • Two (2) 0.75 MG residual settling lagoons • Twelve (12) flocculators • Dechlorination • Ten (10) settling basins • Effluent meter • Eight (8) filters Chemical Usage Consists of: Phycomycin SCP and Oxidizer, Alum, Caustic, Carbon, Chlorine, Fluoride, Sodium Thiosulfate, Polyphosphate Corrosion inhibitor Raw Water Treatment Process: (from application and historical documents) Water is drawn from the First Broad River, stored in a series of reservoirs and treated with phyomycin SCP and Oxidizer. Water is then transferred to the water treatment plant where alum and caustic are added and mixed to start flocculation as the water flows through the flocculators [two trains of six (6) each for twelve (12) total]. A carbon slurry is then added to the water before it is distributed across ten (10) settling basins. From the settling basins the water is distributed across eight (8) multi -media filters where chlorine is added. From the filters water flows to final potable water treatment where fluoride, caustic, chlorine and polyphosphate corrosion inhibitor is added prior to distribution for use. Wastewater and Treatment Process: (from application, and historical documents) Potable water is stored in a backwash water tank and used to backwash the multi -media filters on average once per day. The backwash wastewater is dechlorinated with sodium thiosulfate as it flows to the two (2) wastewater settling lagoons. Stormwater from various parts of the facility also drains to the lagoons. The decanted wastewater from the lagoons passes through the effluent flow meter prior to discharge at the outfall. The lagoons are taken offline as needed (one lagoon at a time) and solids removed and allowed to dry. Solids are then excavated for disposal. APPLICATION The Water Treatment Plant is operated by the City of Shelby. The application outlines a treatment process as outlined above utilizing sedimentation, flocculation and filtration to produce potable water with wastewater and sediments going to lagoons for holding prior to discharge. The application indicates backwash, reject water and stormwater as being in the treatment lagoons and notes activities producing wastewater as filter backwash, flocculator cleaning and sediment basin cleaning. The facility contracts with Pace Analytical for copper, TOC, COD, WET, fluoride, TN, TP and aluminum analysis and with the Shelby WWTP for analysis of BOD, ammonia, TSS and Turbidity. The application notes a number of parameters that are believed to be present, and these are addressed in the permit. INSPECTION The most recent inspection occurred on September 14, 2022. The inspection report noted no issues were found and the facility was well kept and organized. The inspection notes that the groundwater monitoring condition was removed from the permit in 2021 but indicates the city should maintain the wells in accordance with well construction standards (15A NCAC .02C) and the DWM Inactive Hazardous Site Program (NCD986176451). COMPLIANCE: This facility has not had an enforcement action with penalties since 2011. There were no NODS or NOVs during the most recent permit cycle. There was one frequency violation (reporting error) and one limit violation for TRC but the value did not exceed the compliance limit of 50 µg/L. BIMS did show six (6) late or missing GW-59 reports, but no violation actions were taken. Discussion with the regional office indicated that information in the BIMS system related to the GW-59 monitoring should be removed since this monitoring is no longer required. Harnett County Regional WTP Fact Sheet NPDES Renewal 2024 — January 24, 2024 updated 1131124 and 315124 Page 2 MONITORING DATA REVIEW: Parameter Units Min Max Avg Permit Limit Comments Flow (MGD) 0.001 0.700 0.22 - TSS (mg/L) 1.25 5.60 1.66 30 MA 45 DM pH (su) 6.60 7.70 N/A >- 6 and <- 9 TRC (µg/L) < 15.0 18.00 8.70 17 DM One value over 17 but less than com liance level of 50 Turbidity (NTU) < 1.0 7.40 1.33 50 Instream Total Copper (µg/L) < 1.0 230.00 10.83 7.88 MA 10.47 DM One value over DM of 7.88 but Limit not in effect at this time. Total Aluminum (µg/L) 0.140 252.00 137.01 - Total Fluoride (mg/L) < 100 150.00 70.00 - Hardness (mg/L) - Effluent 14.00 18.00 15.89 - Hardness (mg/L - Upstream 33.40 60.00 43.88 Total N (mg/L) < 0.50 1.3 0.6 - Total P (mg/L) 0.03 0.03 0.03 - Whole Effluent Toxicity N/A N/A N/A - Failed 2 of the last 12 WET tests (2022) MA -Monthly Average DM - Daily Max QA -Quarterly Average DA - Daily Average Summer - April through Oct Winter - Nov through March The data reviewed for the renewal is from January 1, 2021 through November 2023. Note that average values in the table above are based on three years of data as required for the RPA evaluations and maximum monthly average flow as required in the WTP Guidance. This three-year period is actually longer than the previous permit cycle. REVIEW OF PERMIT MONITORING AND LIMITS: Flow - The facility's maximum monthly average flow from DMR records for the last three years - as used in RPA analyses - is 0.214 MGD. This value is a bit higher than the maximum average flow in the previous renewal process. Note on flow values -The eDMR system calculates average flow in away that includes all zero values in the calculation. Days with Waivers appear to be given zero values in eDMR and used in the average calculation. This data is taken over into BIMS since the eDMR values are considered the "Copy of Record." Evaluating the flow by excluding the zero values would give a maximum monthly flow of 0.343 MGD. Since the eDMR data is the accepted record and the data found in the system, these results are used in the renewal process. TSS. pH, Turbidity. TN and TP - Data for these parameters do not seem to indicate any major issues during the review period. The turbidity limit has been removed from the permit since the turbidity impairment for the receiving stream was delisted in the 2020 303(d) process. Monitoring for turbidity will be mainatianed. TRC- There was one (1) exceedance of the 17 µg/L limit, but the value was below the compliance level of 50µg/L. Total Aluminum (Al) - There is no water quality standard for this parameter to evaluate towards, but the values from the data were well below the In -Stream Target Values from the Stream Standards guidance spreadsheet. Maintain monitoring due to chemical usage and potential for presence. Whole Effluent Toxicity (WET) - The facility failed two (2) of their WET tests in the three year period evaluated. This represents 17% of their evaluations in that time period. Harnett County Regional WTP Fact Sheet NPDES Renewal 2024 - January 24, 2024 updated 1131124 and 315124 Page 3 Reasonable Potential (RPA) Analysis (Copper and Fluoride) - RPA Evaluations were run using the zero flow values for the low flow numbers and data from the last three years - as established in the WTP Guidance - including the maximum monthly flow value of 0.214 MGD during this time. Note: BIMS has stream flow numbers that appear to be for the First Broad River rather than for the UT which has always been evaluated as zero flow. BIMS stream flow information in the system will be updated. Copper Evaluation: In the 2021 permit renewal Cu limits were set at 7.88 µg/L monthly average and 10.47 µg/L daily max. In this RPA evaluation one DMR value was higher than the allowable chronic Cw (7.88) and the maximum predicted Cw (9.92) was well above the allowable Cw value. Because of this show of reasonable potential, the permit limits will remain in the permit. The 2021 permit had given the City a five year compliance period (to begin November 1, 2026). The city evaluated the cause of their Cu exceedance and changed their biocide control chemical from Copper Sulfate to Phycomycin SCP. Since that change the facility has been meeting their Cu limit. The previous permit gave five years for compliance which would run into the renewal cycle, and require the schedule to be maintained in the permit. Division staff has discussed with the city the possibility of making the limits effective now given their current compliance. The City responded in a February 1, 2024 email (from Brad Greene) that they wanted to remove the compliance schedule and make the limits effective with the permit issuance (effective date). Unfortunately this was neglected in the draft permit. The City commented on this needed change (see March 4, 2024 email) and the Final permit reflects this change. The RPA evaluation for Cu included two values from the previous permit cycle so these values were used for a second time in RPA analyses. One value is a high value of the data set (230) and could be excluded as an outlier. Even without this value the data would still show reasonable potential. Fluoride Evaluation: The data evaluated in the RPA did not show any reasonable potential for water quality impacts. The maximum value in the DMR data was 150 µg/L which is well below the allowable level of 1,800 µg/L. Monitoring could potentially be removed for this parameter, but since fluoride is a chemical additive in the treatment process and could be present, the quarterly monitoring will be maintained. NCG59 GENERAL PERMIT EVALUATION The facility requires a permit limit for copper so the system is not eligible for coverage under the general permit. FILE HISTORY REVIEW SUMMARY • Original Issue Date in BIMS is given as December 31, 1980. Documents in Laserfiche only go back to 1990. • December 18, 1985 - Authorization to Construct (ATC) - This ATC was issued for construction of a 0.72 MGD wastewater treatment facility with two (2) lagoons each having a capacity of 1,565,300 gallons and all piping, etc. for influent and discharge. • April 18, 1990 - Division letter to City's consultant noting that their recent considerations for expansion of water treatment needs to be evaluated to determine the downstream impacts of additional withdrawal and how it would impact the 7Q10 flow and downstream dischargers. • June 1, 1990 - Permit Renewal - Flow TSS SS Turbidity pH Monitoring Parameters MGD m L m L) (NTU) (Standard Units 0 Instantaneous 30 / 45 0.1 / 0.15 Between 6 & 9 None Instr • October 1, 1992 - Division Comments on Environmental Assessment - The EA was for expansion of the Water Treatment Plant from 10 to 18 MGD. The Division noted the need for the City to assess the impact of this added withdrawal on the dischargers downstream since the 7Q10 could be impact and cause a need for Harnett County Regional WTP Fact Sheet NPDES Renewal 2024 — January 24, 2024 updated 1131124 and 315124 Page 4 more stringent discharge limits. Comments indicated that the WTP expansion should not be approved until the city properly evaluated the impact. • April 27, 1994 - Permit Renewal - This renewal added monitoring for Iron, TRC and Aluminum. The staff report noted minimal flow in the receiving stream. The report noted a facility design discharge flow of 0.72 MGD and indicated the treatment system as two alum sludge lagoons. This staff report was completed by the MRO so Cleveland county had moved at this point from the ARO. • November 23, 1998 - Permit Renewal - This renewal changed the daily max limit for settleable solids to 0.2 ml/L and eliminated monitoring for pH noting it was not required for WTPs. The staff report notesthe City requesting reduction in flow for various parameters to twice per month but the requirements remained as weekly in the permit. • September 29, 2003 - Permit Renewal - This renewal added a daily max limit of 17 µg/L for TRC that was set to become effective May 1, 2005. Footnote for TRC noted the 50 µg/L compliance level. Design flow in the staff report continues to show 0.72 MGD but the application indicates a design capacity of 0.78 MGD. • November 9, 2004 - ATC for modifications to add sodium thiosulfate storage and chemical feed system to provide dichlorination. The document notes the need for an operator in responsible charge (ORC) once the system is classified by the Certification Commission. • August 29, 2008 - Permit Renewal - This renewal added pH back into the permit requirements with a 6 to 9 compliance range and removed total settleable solids and turbidity requirements. There were also a number of additions to the parameter monitoring requirements. All requirements are summarized in the table below. Flow TSS pH TRC Monitoring Parameters MGD m L Standard Units µ L 0.20 MGD Aluminum, Calcium, Magnesium, Manganese, Fluoride, 30 / 45 Between 6 & 9 17 DM Instantaneous Copper, Iron, WET The permit also required reporting of duration of flow with the flow monitoring. The staff report notes wastewater coming from filter backwash that is dechorinated prior to going to the treatment lagoons. The permit renewal application describes the water and wastewater treatment processes (similar to current system) and indicates a facility with water treatment capacity of 12 MGD and discharge of 0.058 MGD. August 13, 2009 - Permit Correction to change the permit flow limit from 0.20 MGD to 0.40 MGD as requested by the City. April 24, 2015 - Permit Renewal - This renewal made significant changes in the monitoring requirements. - Flow limit was removed from the permit but monitoring maintained (WTP guidance) - Removed calcium, Manganese, magnesium and fluoride monitoring requirements. - Reduced copper and iron monitoring to quarterly to match WET testing. - Added turbidity monitoring back to the permit. - Added a special condition with compliance schedule for implementation of eDMR. - Added a special condition with requirements for groundwater monitoring as requested by the Groundwater Branch of DWR. The facility lagoons are located partially on top of an inactive Hazardous Waste Landfill and information was requested to evaluate potential impacts. As part of their application (February 6, 2013) the city requested removal of a number of parameters. Copper, Iron, Aluminum and WET remained in the permit. Maximum monthly average discharge noted as 0.298 MGD September 16, 2021 - Permit Renewal - This renewal included updated language for eDMR requirements, outfall map, system process descriptions and treatment components, footnotes, and WET. The treatment system classification, PC - I, was also added to the permit along with regulator citations, parameter codes, duration of flow as a parameter and units of measure. Monitoring changes included: - Added limits for turbidity based on 2018 designation of waters as impaired. - Added limits for copper based on RPA analysis and a five-year compliance schedule (November 1, 2026). - Monitoring added for fluoride (2019 application indicated use of fluoride), Total Hardness, Total Nitrogen and Total Phosphorous. - Groundwater monitoring was removed from the permit at the request of the regional office and the cover letter outlined the city's ongoing responsibilities. The maximum monthly average discharge was noted in the permit as 0.193 MGD. Monitoring Summary: Harnett County Regional WTP Fact Sheet NPDES Renewal 2024 — January 24, 2024 updated 1131124 and 315124 Page 5 Flow TSS pH Turbidity TRC Copper Monitoring Parameters (MGD) (mg/L) (Standard (NTU) (µg/L) (µg/L) Units No Limit 30 / 45 Between 6 & 9 50 DM 17 DM 7.88 / 10.47 Duration of Flow, Aluminum, Fluoride, TN, TP, Hardness, WET PROPOSED PERMIT CHANGES: • Updated eDMR requirements to be consistent with final EPA rule. • Added regulatory citations throughout permit as needed. • Language on the Supplement to Permit Cover Sheet has been updated. This includes modification of the treatment system components to include maximum average monthly discharge of 0.214 MGD and add the use of phycomycin SCP in the place of copper sulfate. • Total Copper - The Reasonable Potential Analysis (RPA) using data from the last three years continues to show reasonable potential for discharge to result in potential water quality impacts. The previous permit set a five-year compliance schedule with the limits becoming effective November 1, 2026. The compliance schedule in Section A.(3.) has been updated. • Turbidity - The receiving stream was declassified as impaired for this parameter in 2020. The limit has been removed but monitoring is still required. • Permit map and descriptive information on the permit map have been updated. • Expiration date has been changed to March 31, 2029 to allow for a nearly full five year permit term. • Groundwater wells removed from the permit in BIMS to avoid any future failure to monitor violations. PROPOSED SCHEDULE FOR PERMIT ISSUANCE: Draft Permit to Public Notice: February 6, 2024 Permit Scheduled Effective Date: May 1, 2024 STATE CONTACT: If you have questions concerning the above or the attached documents, please contact Bradley Bennett at bradley.bennett@deq.nc.gov. . COMMENTS ON DRAFT PERMIT: The city provided comments on the draft in an email from Brian Wilson received on March 4, 2024. The city noted that the compliance schedule for Total Copper should have been removed from the permit. As noted above in the Fact Sheet RPA section, the city had been approached by Division staff about forgoing the compliance schedule into this permit cycle since the facility was meeting their limits. The city agreed to this in a February 1, 2024 email. However, the February draft permit did not make this change. The Final Permit has been corrected so that the Total Copper limits will be effective on the effective date of the permit. The city also requested that three other parameters in the effluent table (Turbidity, Aluminum and Fluoride) be noted as "Monitor and Report" like some other parameters without limits. This change has also been made in the final permit. Harnett County Regional WTP Fact Sheet NPDES Renewal 2024 — January 24, 2024 updated 1131124 and 315124 Page 6 LOCAL'1*0 StarNews I The Dispatch I Times -News PO Box 631697 Cincinnati, OH 45263-1697 Sun Journal I The Daily News I The Star The Free Press I Gaston Gazette PROOF OF PUBLICATION Wren Thedford 1617 Mail Service Center Raleigh NC 27699-1617 STATE OF NORTH CAROLINA, COUNTY OF CLEVELAND The Star, a newspaper printed and published in the city of Shelby, and of general circulation in the County of Cleveland, State of North Carolina, and personal knowledge of the facts herein state and that the notice hereto annexed was Published in said newspapers in the issue dated: 02/09/2024 and that the fees charged are legal. Sworn to and subscribed before on 02/09/2024 '2 ` I L-t 9Z My commission expires Publication Cost: $85.50 Order No: 9831716 # of Copies: Customer No: 1018659 0 PO #: LWLM0059520 THIS IS NOT AN INVOICE! Please do not use this form for payment remittance. KEEGAN MORAN Notary Public State of Wisconsin Page 1 of 2 Public Notice North Carolina Environmen- tal Management Commis- sion/NPDES Unit 1617 Mail Service Center Raleigh, NC 27699-1617 Notice of Intent to Issue NPDES Wastewater Permit NCO027197 — City of Shelby WTP The North Carolina Envi- ronmental Management Commission proposes to issue a NPDES wastewa- ter discharge permit to the person (s) listed below. Written comments regard- ing the proposed permit will be accepted until 30 days after the publish date of this notice. The Direc- tor of the NC Division of Water Resources (DWR) may hold a public hearing should there be a significant degree of public interest. Please mail comments and/ or information requests to DWR at the above address. Interested persons may visit the DWR at 512 N. Salisbury Street, Raleigh, NC 27604 to review the information on file. Additional information on NPDES permits and this notice may be found on our website: https://deq.nc.gov/ public-notices-hearings,or by calling (919) 707-3601. The City of Shelby [PO Box 207, Shelby, NC 281511 has requested renewal of NPDES permit N00027197 for the City of Shelby WTP, located in Cleveland County. This permitted facility discharges treated wastewater to a UT to First Broad River, a class C water in the Broad River Basin. Some of the param- eters in the permit are water quality limited. This discharge may affect future allocations in this segment of the First Broad River. February 9 2024 LW LM0059520 Bennett, Bradley From: Bennett, Bradley Sent: Tuesday, March 5, 2024 5:47 AM To: Brian Wilson Cc: Jamie Byers; Wilkie, Billy; Greene, Brad; Howell, Rick Subject: RE: [External] RE: Draft Permit - City of Shelby WTP - NC0027197 Mr. Wilson, Thanks for your comments on the draft permit. Below are responses to the questions you raised. Your Questions are shown first and our responses are given below them in Red Copper limit requirements to be removed. Section A.(3) Schedule of Compliance (Outfall 001) and Footnote #3 then should be removed from also from the footnotes. apologize for missing this change in the draft after we discussed it earlier. As noted in Mr. Greene's email response from February 1, 2024, we will remove the footnote and compliance schedule from the permit and the copper limits will be in place on the effective date of your permit. I just neglected to make this adjustment to the permit after getting your final approval. Thanks for pointing this out! • Turbidity Limits have been removed but we are still required to monitor and Report. Can "Monitor and Report" be added to the Limits table in Part 1? We will add "Monitor and Report" in the Effluent Table for Turbidity Aluminum and Total Fluoride currently do not have limits, but we are still required to Monitor and Report. Can "Monitor and Report" be added to the Limits table in Part 1? We will add "Monitor and Report" in the Effluent Table for Aluminum and Fluoride If you have any other question please let me know. Again, thank you for your review and comments. Bradley Bennett Compliance and Expedited Permitting NC Division of Water Resources 1617 Mail Service Center Raleigh, NC 27699-1617 Phone: (919) 707-3629 Email: bradley.bennett@deq.nc.gov Email correspondence to and from this address may be subject to public records laws DEQ is updating its email addresses to @deq.nc.gov in phases from May 1st to June 9th 2023. Employee email addresses may look different, but email performance will not be impacted. From: Brian Wilson <brian.wilson@cityofshelby.com> Sent: Monday, March 4, 2024 5:03 PM To: Bennett, Bradley <bradley.bennett@deq.nc.gov> Cc: Jamie Byers <jamie.byers@cityofshelby.com>; Wilkie, Billy <Billy.Wilkie@cityofshelby.com>; Greene, Brad <Brad.Greene@cityofshelby.com>; Howell, Rick <rick.howell@cityofshelby.com> Subject: [External] RE: Draft Permit - City of Shelby WTP - NCO027197 CAUTION: External email. Do not click links or open attachments unless verified. Report suspicious emails with the Report Message button located on your Outlook menu bar on the Home tab. Mr. Bennett, Please see the following comments from staff regarding the City of Shelby Draft Permit NCO027197 • Copper limit requirements to be removed. Section A.(3) Schedule of Compliance (Outfall 001) and Footnote #3 then should be removed from also from the footnotes Turbidity Limits have been removed but we are still required to monitor and Report. Can "Monitor and Report" be added to the Limits table in Part 1? Aluminum and Total Fluoride currently do not have limits, but we are still required to Monitor and Report. Can "Monitor and Report" be added to the Limits table in Part 1? We would appreciate your feedback on the above comments or any other feedback regarding our draft permit. Thank you. Shelb NORTH CAROLINAy Brian Wilson Director of Water Resources Utilities Operations Center 824 W Grover Street, Shelby, NC 28150 0:704.669.6570 1 D:704.418.6882 www.cityofshelby.com From: Bennett, Bradley <bradley. ben nett@deg.nc.Rov> Sent: Tuesday, February 6, 2024 10:30 AM To: Greene, Brad <Brad.Greene@cityofshelby.com>; Rick Howell <Rick.HowelI@cityofshelby.com> Cc: Brian Wilson<brian.wilson@citvofshelby.com>; Jamie Byers <jamie.byers@cityofshelby.com>; Wilkie, Billy <Billy.Wilkie@cityofshelby.com> Subject: Draft Permit - City of Shelby WTP - NCO027197 You don't often get email from bradley.bennett@deg.nc.gov. Learn why this is important Attached is the draft permit for the NPDES discharge for the City of Shelby WTP — NC0027197. This permit will go to public notice in a local paper later this week. Please take a look and let us know if you have any comments or questions about the draft. Please note that the draft permit continues to have language about a compliance schedule for the Copper limits. I'm sorry that this change did not happen before the notice copy was sent out. Based on the information you provided in your February 1, 2024 email we will correct this in the final permit and remove the schedule making the copper limits effective on the effective date of the permit. Please respond to this email to verify that you got the draft permit and were able to open, view, download and print the document for your use. Thanks Bradley Bennett Compliance and Expedited Permitting Phone: (919) 707-3629 NC Division of Water Resources 1617 Mail Service Center Email: bradley. ben nett()deg.nc.gov Raleigh, NC 27699-1617 Email correspondence to and from this address may be subject to public records laws DEQ is updating its email addresses to @deg.nc.gov in phases from May 1st to June 9th 2023. Employee email addresses may look different, but email performance will not be impacted. Email correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties by an authorized state official. *** This message came from outside the City of Shelby network. Please be careful in opening attachments you are not expecting or clicking on links in messages. If you have any questions, please contact Mark at 6858 or Jeff at 6578.*** Bennett, Bradley From: Talbott, Jeffrey Sent: Tuesday, February 27, 2024 10:22 AM To: Bennett, Bradley Subject: RE: Draft NPDES Permit for City of Shelby WTP - NCO027197 Hello Bradley - Operator certification notes that this facility is classified as a PC -I, with the ORC and all Backup ORC's active and in good standing with the program. We have no comments at this time. Thank you. Jeff Talbott Supervisor, NC Operator Certification Program Division of Water Resources Department of Environmental Quality Phone: (919)707-9108 Email: Jeff rey.TalbottPdeq.nc.gov -------------------------------------------------------------------------------- Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties. From: Bennett, Bradley <bradley.bennett@deq.nc.gov> Sent: Tuesday, February 6, 2024 10:34 AM To: Talbott, Jeffrey <jeffrey.talbott@deq.nc.gov> Subject: Draft NPDES Permit for City of Shelby WTP - NCO027197 Hey Jeff, I have attached the draft permit for this facility. Let me know if you see any issues with this one. Thanks mm Bradley Bennett Compliance and Expedited Permitting NC Division of Water Resources 1617 Mail Service Center Raleigh, NC 27699-1617 Phone: (919) 707-3629 Email: bradIev.bennettC@deg.nc.gov 1 Email correspondence to and from this address may be subject to public records laws DEQ is updating its email addresses to @deq.nc.gov in phases from May 1st to June 91h 2023. Employee email addresses may look different, but email performance will not be impacted. Email correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties by an authorized state official. Bennett, Bradley From: Weaver, Charles Sent: Tuesday, February 6, 2024 11:29 AM To: Bennett, Bradley Subject: RE: Question on City of Shelby WTP - NC0027197 Not personally, no. I'd recommend contacting Groundwater in the MRO. Someone there should have BIMS access. Charles H. Weaver Environmental Specialist II Division of Water Resources 919-707-3616 charles.weaver(c)deg.nc.gov (mailing address) 1617 Mail Service Center, Raleigh, NC 27699-1617 ,r�,-QEQ ErrraJ corresporldenc+e tv and from this azUresa is subject to the MW17 Caro+irsa Public Recofds Law and may be discbted to third parties, From: Bennett, Bradley <bradley.bennett@deq.nc.gov> Sent: Tuesday, February 6, 2024 11:23 AM To: Weaver, Charles <charles.weaver@deq.nc.gov> Subject: RE: Question on City of Shelby WTP - NCO027197 Thanks Charles. Do you know anyone there that would be a good contact? Bradley Bennett Compliance and Expedited Permitting NC Division of Water Resources 1617 Mail Service Center Raleigh, NC 27699-1617 Phone: (919) 707-3629 Email: brad ley. ben nett ,deq.nc.gov Email correspondence to and from this address may be subject to public records laws DEQ is updating its email addresses to @deq.nc.gov in phases from May 1st to June 9th 2023. Employee email addresses may look different, but email performance will not be impacted. From: Weaver, Charles <charles.weaver@deg. nc.gov> Sent: Tuesday, February 6, 2024 11:22 AM To: Bennett, Bradley <bradley.ben nett@deg.nc.gov> Subject: RE: Question on City of Shelby WTP - NCO027197 Contact groundwater. We allowed them access to that portion of our permits in BIMS so they could maintain wells, etc. They need to delete the wells if they are no longer being monitored. Charles H. Weaver Environmental Specialist II Division of Water Resources 919-707-3616 charles.weaver(cDdeg.nc.gov (mailing address) 1617 Mail Service Center, Raleigh, NC 27699-1617 n{ r�i.air.wared.a�� Email correspondence to arad from Phis address is subjecl to the Norlh Carolina Public Records Law and may be disclosed to Ihird parties, From: Bennett, Bradley <bradley.bennett@deq.nc.gov> Sent: Tuesday, February 6, 2024 10:49 AM To: Weaver, Charles <charles.weaver@deg.nc.gov> Subject: Question on City of Shelby WTP - NCO027197 Hey Charles, This draft permit is going to notice this week. The permit used to have groundwater monitoring requirements but those were removed in the renewal in 2021. However, over the last permit cycle BIMS was still producing late violations for the GW-57 forms. Can you help with getting this stopped in BIMS or is there someone in groundwater I need to talk with? Thanks M Bradley Bennett Compliance and Expedited Permitting Phone: (919) 707-3629 NC Division of Water Resources 1617 Mail Service Center Email: bradlev.bennett(@deg.nc.gov Raleigh, NC 27699-1617 Email correspondence to and from this address may be subject to public records laws DEQ is updating its email addresses to @deq.nc.gov in phases from May 1st to June 9th 2023. Employee email addresses may look different, but email performance will not be impacted. Email correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties by an authorized state official. Bennett, Bradley From: Greene, Brad <Brad.Greene@cityofshelby.com> Sent: Thursday, February 1, 2024 7:52 AM To: Bennett, Bradley Cc: Brian Wilson; Jamie Byers Subject: [External] Shelby WTP NPDES Permit NCO027197 CAUTION: External email. Do not click links or open attachments unless verified. Report suspicious emails with the Report Message button located on your Outlook menu bar on the Home tab. Mr. Bennet, After review of the questions, you sent relating to the Shelby WTP NPDES permit renewal (NC0027197), please accept the City's following response. • Copper Limits — The City would like to add the copper limit (7.88 ug/L monthly average and the 10.47 ug/L daily max) to the upcoming permit and forgo the remaining requirements of the five-year compliance plan. • Permit Contact Information — Please remove David Hux from the contact list. Change Brian Wilson's title to Director of Water Resources. Add Jamie Byers as the Facility Contact Person. Add Brad Greene and Brian Wilson as the Permit Contact Person(s). Contact Information for Brad and Jamie will be below. • Electronic Submittal of Permitting Documents —The City will accept electronic correspondence as the preferred method. • Settling Lagoon Size — The City has two (2) 0.75 mgd settling lagoons for a total of 1.5 mgd of capacity. Contact Information Brad Greene Plant Operations Superintendent 824 West Grover Street, Shelby NC 28150 Phone: 704-484-6840 Fax: 704-484-6808 brad.greene@cityofshelby.com Jamie Byers Water Treatment Plant Supervisor/ORC 824 West Grover Street, Shelby NC 28150 Phone: 704-484-6885 Fax: 704-484-6808 iamie.byers@cityofshelbv.com If you need any more information, please feel free to reach out. Brad Greene Plant Operations Superintendent City of Shelby 1 Bennett, Bradley From: Bassett, Sara Sent: Friday, January 26, 2024 2:46 PM To: Bennett, Bradley Subject: RE: Draft WTP Permit for Review - Shelby WTP - NCO027197 Hey Bradley, Just a few comments/questions on the draft: In the RPA for copper, the value for 1/19/2021 was reported as 0.23 mg/L. Apologies if this was addressed in your factsheet and I missed it, but was that a misreported value or unit? I also noticed that the BIMS coordinates seem to be slightly different from those in the application, although it was quite close. Finally, just a formatting note, there is an extra blank bullet point in the factsheet under the facility overview. The rest looked good to me; it was helpful to see a more in-depth factsheet example. Hope I didn't miss anything! Sara From: Bennett, Bradley <bradley.bennett@deq.nc.gov> Sent: Wednesday, January 24, 2024 1:32 PM To: Bassett, Sara <sara.bassett@deq.nc.gov> Subject: RE: Draft WTP Permit for Review - Shelby WTP - NCO027197 Hey Sara, Yes, we do run the RPA analysis with the most recent data from their DMRs. We generally use the last three years of data in the analysis. If you need to walk through any of that process let me know. Do you have the documents that Sydney used in her WTP training late last year? That includes info on the RPA process. Meeting tomorrow. I will try to be available for that. I am part-time and generally only work Monday -Wednesday but if you are able to get the meeting with John on this issue I'd like to participate if I am able. Bradley Bennett Compliance and Expedited Permitting Phone: (919) 707-3629 NC Division of Water Resources 1617 Mail Service Center Email: bradley.bennettC@deg.nc.gov Raleigh, NC 27699-1617 Email correspondence to and from this address may be subject to public records laws DEQ is updating its email addresses to @deq.nc.gov in phases from May 1st to June 9th 2023. Employee email addresses may look different, but email performance will not be impacted. From: Bassett, Sara <sara.bassett@deg.nc.Bov> Sent: Wednesday, January 24, 2024 1:25 PM To: Bennett, Bradley <bradley.ben nett@deg.nc.Bov> Subject: RE: Draft WTP Permit for Review - Shelby WTP - NCO027197 Thanks, I will take a look at it. When you are reviewing WTP do you go ahead and re -run the RPA as well? I am trying to meet with John tomorrow at 11:30 to ask about the 'reporting after commencement' special condition and a question about another permit of mine because I haven't gotten an email response from him and would like to move forward with those permits. I don't think my questions would take long though so I can add you to that call if you would like and we could talk to him about the TSS. (I will say he has not accepted the meeting yet so it may fall through but Mike did accept it.) From: Bennett, Bradley <bradley. ben nett@deg.nc.gov> Sent: Wednesday, January 24, 2024 1:15 PM To: Bassett, Sara <sara.bassett@deg.nc.gov> Subject: Draft WTP Permit for Review - Shelby WTP - NCO027197 Hey Sara, Here is the draft WTP permit that I mentioned to you a while back (link to files on OneDrive below). If you could review it and give me any comments you might have I would appreciate it. Let me know if you have any questions. M NCO027197 - City of Shelby - Shelby WTP By the way, I still haven't heard back from Nick on the TSS limits. I may try and schedule a meeting with John to discuss that. Bradley Bennett Compliance and Expedited Permitting Phone: (919) 707-3629 NC Division of Water Resources 1617 Mail Service Center Email: bradlev.bennettC@deg.nc.gov Raleigh, NC 27699-1617 Email correspondence to and from this address may be subject to public records laws DEQ is updating its email addresses to @deq.nc.gov in phases from May 1st to June 9th 2023. Employee email addresses may look different, but email performance will not be impacted. Email correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties by an authorized state official. Bennett, Bradley From: Bennett, Bradley Sent: Wednesday, January 24, 2024 1:20 PM To: Pitner, Andrew Subject: Draft Permit Renewal - Shelby WTP _ NCO027197 Attachments: NC0027197_Fact Sheet Binder_2024.pdf; NC0027197_Draft Permit and Cover Ltr_ 2024.pdf Hey Andrew, Here is the draft permit and fact sheet for Shelby WTP — NC0027197. Please take a look and let me know if you have any comments/questions. Please forward this along to anyone else in the region that should be involved. The application is in Laserfiche if you need that. I will also work with Charles during the renewal to assure that there aren't any future late notices generated on the GW- 59 reports since this monitoring was removed. Thanks Bradley Bennett Compliance and Expedited Permitting NC Division of Water Resources 1617 Mail Service Center Raleigh, NC 27699-1617 Phone: (919) 707-3629 Email: bradley.bennett@deq.nc.gov Email correspondence to and from this address may be subject to public records laws DEQ is updating its email addresses to @deq.nc.gov in phases from May 1st to June 9th 2023. Employee email addresses may look different, but email performance will not be impacted. Bennett, Bradley From: Bennett, Bradley Sent: Wednesday, January 24, 2024 12:00 PM To: billy.wilkie@cityofshelby.com Cc: brian.wilson@cityofshelby.com Subject: Shelby WTP Renewal - NCO027197 Mr. Wilkie, Thanks for talking with me today about the permit renewal. As we discussed, I will leave the treatment system description in the permit as indicating you have two (2) 0.75 MG settling lagoons. I was just making sure since some previous applications and an old ATC had indicated two (2) 1.5 MG lagoons. Thanks for clarifying that for me. Also, we discussed the Total Copper limits in your permit. In the 2021 renewal the limits were added with a five-year compliance schedule in the permit which would put the limits effective November 1, 2026. The last permit gave you until 2026 and we can certainly leave that in the permit as it is if you want. That would include the current requirement that you provide annual response to our Division on the efforts toward compliance with the limits until the 2026 compliance timeframe. However, it looks as if you may have found to reason for your copper issues in changing the use of copper sulfate in your process. Since that time, it appears that you have been meeting the copper limits. I wanted tc see if the City was interested in removing the compliance scheduled from the permit and just having the copper limits be effective with issuance of the permit. If so, please respond to let us know this is okay along with your response to my January 16, 2024 email questions on permit contact changes and electronic submittal of permit documents. Thanks Again for your help! Bradley Bennett Compliance and Expedited Permitting Phone: (919) 707-3629 NC Division of Water Resources 1617 Mail Service Center Email: bradley.bennett@deq.nc.gov Raleigh, NC 27699-1617 Email correspondence to and from this address may be subject to public records laws DEQ is updating its email addresses to @deq.nc.gov in phases from May 1st to June 9th 2023. Employee email addresses may look different, but email performance will not be impacted. Bennett, Bradley From: Pitner, Andrew Sent: Tuesday, January 16, 2024 1:42 PM To: Bennett, Bradley Subject: RE: City of Shelby WTP Permit Renewal - NC0027197 Yes, the monitoring wells were removed on purpose. Please take any steps necessary to keep BIMS from generating any violations related to the wells. Thanks, Andrew Andrew Pitner, P.G. - Andrew.Pitner@ncdenr.gov Division of Water Resources - Water Quality Regional Operations Mooresville Regional Office (MRO) North Carolina Department of Environment & Natural Resources 610 East Center Avenue, Suite 301, Mooresville, NC 28115 MRO Main Phone: (704) 663-1699 Direct Office Phone: (704) 235-2180 MRO Fax: (704) 663-6040 DWR website: http://www.ncwater.org NOTICE: Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties unless the content is exempt by statute or other regulation. From: Bennett, Bradley <bradley.bennett@deq.nc.gov> Sent: Tuesday, January 16, 2024 1:37 PM To: Pitner, Andrew <andrew.pitner@deq.nc.gov> Subject: City of Shelby WTP Permit Renewal - NC0027197 Hey Andrew, Just wanted to touch base and let you know that I am working on this permit renewal now in case you guys have any issues with this one. I hope to have it ready for public notice soon so I'll forward you a draft before that. On thing I did want to get your feedback on. This facility apparently has lagoons that were built in an old closed landfill. The permit used to have conditions related to groundwater well monitoring, but that section was removed in the last permit renewal in 2021. 1 think the regional office requested to have this removed. Looking at data in BIMS I noticed that there had been 6 instances noted over the this permit cycle of Late/Missing GW-59 reports. There were no actions taken so I'm wondering if we need to make some adjustments in BIMS so the system isn't looking for these or is there a reason for this to remain? Do they still have some responsibility for groundwater monitoring? Thanks L3.3 Bradley Bennett Compliance and Expedited Permitting Division of Water Resources 1617 Mail Service Center Raleigh, NC 27699-1617 Phone: (919) 707-3629 email: bradley.bennett@deq.nc.gov Bennett, Bradley From: Bennett, Bradley Sent: Tuesday, January 16, 2024 1:51 PM To: billy.wilkie@cityofshelby.com Cc: brian.wilson@cityofshelby.com; Howell, Rick Subject: Permit Renewal for City of Shelby WTP - NCO027197 Attachments: NCO027197_NPDES WW Permit Contacts_20240116.pdf I am a permit writer in the Division of Water Resources and I am currently working on the permit renewal for the NPDES wastewater discharge for the City of Shelby's Water Treatment Plant — NC0027197. I wanted to get in touch on a couple of items as outlined below, and also to give you my contact information in case you had any questions during the process. Please see the items below. Review of Permit Contact Information: Attached is a pdf file with information on contacts that we currently have in our permitting database for this facility. Could you please review the information and let us know if we need to make any corrections/additions or deletions int the information to keep or information up to date. Electronic Submittal of Permitting Documents: In order to provide more convenience, control, and security to our permittees and assist them in processing their transactions, The Division of Water Resources is currently transitioning towards electronic correspondence. This hopefully provides more efficient service to our permittees and other partners and will allow us to more effectively process and track documents. We are writing to ask you for your approval of the transmittal of documents related to your permitting and related activities with the Division in an electronic format. Documents will be emailed to the appropriate contact person(s) in your organization in a PDF format. Please respond to me through email with verification that transmittal of your documents in an electronic manner is acceptable to you. If you have any questions, please feel free to contact me. Thanks Bradley Bennett Compliance and Expedited Permitting Division of Water Resources 1617 Mail Service Center Raleigh, NC 27699-1617 Phone: (919) 707-3629 email: bradley.bennett@deg.nc.gov Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties. North Carolina Department of Environmental Quality Division of Water Resources Permit Number: NCO027197 Permit Type: Water Plants and Water Conditioning Discharge Facility Name: Shelby WTP Facility Addressl: 801 W Grover St Facility Address2: City, State & Zip: Shelby, NC 28150 Owner Information Details: MUST submit a Change of Name/Ownership form to DWR to make any changes to this Owner information. (Click Here for "Change of Name/Ownership"Form) Owner Name: City of Shelby Owner Type: Government - Municipal Owner Type Group: Organization *** Legally Responsible for Permit *** (Responsible corporate officer/principle executive officer or ranking elected official/general partner or proprietor; or any other person with delegated signatory authority from the legally responsible person.) Owner Affiliation: Rick Howell Title: City Manager Addressi: PO Box 207 Address2: City, State & Zip: Shelby, NC 28151-0207 Work Phone: 704-484-6800 Fax: 704-484-6871 Email Address: rick.howell0)cityofshelby.com Owner Contact Person(s) Contact Name Title Address Phone Fax Email Rick Howell 300 S Washington St, PO Box 207, 919-828-5252 Shelby, NC 28150 Ben Yarboro 824 W Grover St, Shelby, NC 28150 704-484-6840 ben.yarboro@cityofshelb y.com O'Brian Wilson Water Resources PO Box 207, Shelby, NC 28151-0207 704-669-6552 brian.wilson@cityofshelb Operations Manager y.com Facility Contact Person(s) Contact Name Title Address Phone Fax Email Permit Contact Person(s) Contact Name Title Address Phone Fax Email Permit Billing Contact Person(s) Contact Name Title Address Phone Fax Email Rick Howell PO Box 207, Shelby, NC 28151-0207 704-484-6800 704-484-6871 rick.howell@cityofshelby. com Persons with Signatory Authority Type Contact Name Title Address Phone Fax Email Permit David W Hux PO Box 207, Shelby, NC 704-484-6840 704-484-6808 david.hux@cityofshelby. 28151-0207 com Permit Brian Wilson Operations Manager PO Box 207, Shelby, NC 704-699-6552 28151-0207 1/16/2024 Page 1 Permit Number: NCO027197 Permit Type: Water Plants and Water Conditioning Discharci Facility Name: Shelby WTP Facility Addressl: 801 W Grover St Facility Address2: City, State & Zip: Shelby, NC 28150 Designated Operators If the designated operators listed below are incorrect or no longer associated with the collection system, the information can be updated by a "Operator Designation Form " (Click Here for ORC Designation FormJ. P/ease pro vide specific details as to the changes requested, including th designated operators For a// other operator questions or issues, please call 919-807-6353, Facility Classification: PC1 Operator Name Role Cert Type Cert Status Cert # Effective Date Billy J Wilkie ORC PC-1 Active 985377 4/24/2009 Charles Wendell Leonard Backup PC-1 Active 985366 4/24/2009 1/16/2024 Page 2 Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators MAXIMUM DATA POINTS = 58 REQUIRED DATA ENTRY Table 1. Project Information Facility Name WWTP/WTP Class NPDES Permit Outfall Flow, Qw (MGD) Receiving Stream HUC Number Stream Class ❑ Apply WS Hardness WQC 7Q10s (cfs) 7Q10w (cfs) 30Q2 (cfs) QA (cfs) 1 Q10s (cfs) _Effluent Hardness Upstream Hardness _Combined Hardness Chrc_ oni Combined Hardness Acute Data Source(s) ❑ CHECK TO APPLY MODEL ❑ CHECK IF HQW OR ORIN WQS City of Shelby WTP WTP - P/C Class I NCO027197 001 0.214 UT to First Broad River 030501050702 C 0.00 0.00 0.00 0.00 0.00 15.89 mg/L (Avg) 43.88 mg/L (Avg) -------- 25 mg/L--- 25 mg/L - - - - - - - - - - - - - - Partll Par02 Par03 Par04 Partly Par06E Par07 Partl8 Par09 Par10 Par11 Par12 Par13 Par14 Par15 Par16 Par17 Par18 Par19 Par20 Par21 Par22 Par23 Par24 Table 2. Parameters of Concern Name WQs Type Chronic Modifier Acute PQL Units Arsenic Aquactic Life C 150 FW 340 ug/L Arsenic Human Health Water Supply C 10 HH/WS N/A ug/L Beryllium Aquatic Life NC 6.5 FW 65 ug/L Cadmium Aquatic Life NC 0.5899 FW 3.2396 ug/L Chlorides Aquatic Life NC 230 FW mg/L Chlorinated Phenolic Compounds Water supply NC 1 A ug/L Total Phenolic Compounds Aquatic Life NC 300 A ug/L Chromium III Aquatic Life NC 117.7325 FW 905.0818 ug/L Chromium VI Aquatic Life NC 11 FW 16 pg/L Chromium, Total Aquatic Life NC N/A FW N/A pg/L Copper Aquatic Life NC 7.8806 FW 10.4720 ug/L Cyanide Aquatic Life NC 5 FW 22 10 ug/L Fluoride Aquatic Life NC 1,800 FW ug/L Lead Aquatic Life NC 2.9416 FW 75.4871 ug/L Mercury Aquatic Life NC 12 FW 0.5 ng/L Molybdenum Human Health NC 2000 HH ug/L Nickel Aquatic Life NC 37.2313 FW 335.2087 pg/L Nickel Water Supply NC 25.0000 WS N/A pg/L Selenium Aquatic Life NC 5 FW 56 ug/L Silver Aquatic Life NC 0.06 FW 0.2964 ug/L Zinc Aquatic Life NC 126.7335 FW 125.7052 ug/L NCO027197_9595 Final FW RPA_2024, input 1 /24/2024 H1 1 2 3 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 REASONABLE POTENTIAL ANALYSIS Use "PASTE SPECIAL H2 Effluent Hardness Values" men a point . Upstream Hardness Maximum data points = 58 Use "PASTE SPECIAL Values" then "COPY". Maximum data points = 58 Date Data BDL=1/2DL Results Date Data BDL=1/2DL Results 11/23/2021 15 15 Std Dev. 1.3157 1 11/24/2021 40 40 Std Dev. 8.3266 1/4/2022 18 18 Mean 15.8889 2 1/4/2022 60 60 Mean 43.8778 4/5/2022 14 14 C.V. (default) 0.6000 3 4/5/2022 46 46 C.V. (default) 0.6000 7/5/2022 15.6 15.6 n 9 4 7/5/2022 33.4 33.4 n 9 10/11/2022 16.2 16.2 10th Per value 14.48 mg/L 5 10/11/2022 39.9 39.9 10th Per value 36.84 mg/L 1/11/2023 14.6 14.6 Average Value 15.89 mg/L 6 1/11/2023 53.2 53.2 Average Value 43.88 mg/L 4/3/2023 15.4 15.4 Max. Value 18.00 mg/L 7 4/3/2023 45.5 45.5 Max. Value 60.00 mg/L 7/10/2023 17 17 8 7/10/2023 39.2 39.2 10/2/2023 17.2 17.2 9 10/2/2023 37.7 37.7 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 NCO027197_9595 Final FW RPA w corrected 2021 data_2024, data - 1 - 1 /31 /2024 REASONABLE POTENTIAL ANALYSIS Pall Copper Date Data BDL=1/2DL Results 1 1/19/2021 203 203 Std Dev. 2 4/27/2021 < 5 2.5 Mean 3 7/20/2021 8 8 C.V. 4 10/19/2021 < 5 2.5 n 5 11 /2/2021 3 3 6 12/7/2021 2 2 Mult Factor = 7 1/4/2022 < 2 1 Max. Value 8 2/1/2022 4 4 Max. Pred Cw 9 3/1/2022 < 2 1 10 4/5/2022 < 2 1 11 5/5/2022 3 3 12 6/1/2022 3.7 3.7 13 7/5/2022 2.6 2.6 14 8/2/2022 4.5 4.5 15 9/6/2022 2.6 2.6 16 10/11/2022 8 8 17 11/1/2022 6.5 6.5 18 12/6/2022 3.4 3.4 19 1/11/2023 2.1 2.1 20 2/1/2023 2.2 2.2 21 3/1/2023 4.2 4.2 22 4/3/2023 < 2 1 23 5/2/2023 2.1 2.1 24 6/7/2023 < 2 1 25 7/10/2023 2.5 2.5 26 8/1/2023 2.5 2.5 27 9/5/2023 4.6 4.6 28 10/2/2023 2.1 2.1 29 11 /1 /2023 < 1 0.5 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 Par13 Values" then "COPY". Maximum data points = 58 9.9000 3.7563 29 1.79 203.00 ug/L 363.37 ug/L Use "PASTE SPECIAL Fluoride Values" then "COPY". Maximum data points = 58 Date Data BDL=1/2DL Results 1 11/23/2021 150 150 Std Dev. 2 1/4/2022 < 50 25 Mean 3 4/5/2022 < 50 25 C.V. (default) 4 7/5/2022 130 130 n 5 10/11/2022 < 50 25 6 1/11/2023 < 50 25 MultFactor= 7 4/3/2023 < 50 25 Max. Value 8 7/10/2023 < 50 25 Max. Pred Cw 9 10/2/2023 < 50 25 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 50.5556 0.6000 9 1.81 150.0 ug/L 271.5 ug/L NCO027197_9595 Final FW RPA w corrected 2021 data_2024, data -2- 1 /31 /2024 City of Shelby WTP - Outfall 001 NCO027197 Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators Qw = 0.214 MGD MAXIMUM DATA POINTS = 58 Qw (MGD) = 0.21 WWTP/WTP Class: WTP - P/C Class I COMBINED HARDNESS (mg/L) 1Q10S (cfs) = 0.00 IWC% @ 1Q10S = 100 Acute = 25 mg/L 7Q10S (cfs) = 0.00 IWC% @ 7Q10S = 100 Chronic = 25 mg/L 7Q10W (cfs) = 0.00 TWC% @ 7Q10W = 100 30Q2 (cfs) = 0.00 IWC% @ 30Q2 = 100 Avg. Stream Flow, QA (cfs) = 0.00 TW%C @ QA = 100 Receiving Stream: UT to First Broad River HUC 030501050702 Stream Class: C PARAMETER NC STANDARDS OR EPA CRITERIA F REASONABLE POTENTIAL RESULTS RECOMMENDED ACTION TYPE J an Applied Chronic Acute # Det. Max Pred Cw Allowable Cw Standard Acute: 10.47 RP shown - apply Monthly Monitoring with Limit Copper NC 7.8806 FW 10.4720 ug/L 29 21 363.37 _ _ _ _ _ -- --------------------------- Chronic:----- 7.88 3 values > Allowable Cw Acute: NO WQS No RPA, Maintain quarterly monitoring due to Fluoride NC 1800 FW ug/L 9 2 271.5 Fluoride use Note: n 5 9 C.V. (default) Chronic: 1,800.0 Limited data set I lNo value > Allowable Cw NCO027197_9595 Final FW RPA w corrected 2021 data_2024, rpa Page 1 of 1 1/31/2024 Whole Effluent Toxicity Testing and Self Monitoring Summary SGWASA (S. Granville/Butner WWTP) NCO026824/001 County: Granville Ceri7dPF Begin: 8/1/2013 chr lim: 90% NonComp: Single J F M A M 2019 - Pass - - Pass 2020 - Pass>100(P) - - Pass 2021 - Pass - - Pass 2022 - Pass - - Pass >100(P) 2023 - Pass - - Pass Region: FRO Basin: NEU01 Feb May Aug Nov 70,10: 0.09 PF: 5.5 IWC: 99 Freq: Q J J A S O Pass Pass - - Pass >100(P) - - Pass Pass SOC_JOC: N Pass Pass Pass Pass INVALID>100 0 SGWASA WTP NCO058416 County: Granville Region: FRO Basin: NEU01 Jan Apr Jul Oct SOC JOC: Ceri7dPF Begin: 6/1/2018 Chr Monit: 90% NonComp: 70,10: PF: 0.20 IWC: Freq: Q J F M A M J J A S O N D 2019 Fail - - Fail - - Pass - - Fail - - 2020 Fail - - Fail - - Fail - - Fail - - 2021 Fail - - Fail - - Fail - - Fail - - 2022 Pass - - Fail - - Fail - - Fail - - 2023 Fail - - Fail - - Fail - - Fail - - Shearon Harris Nuclear Power Plant NCO039586/006 County: Chatham Region: FRO Basin: CPF07 Feb May Aug Nov SOC JOC: Fthd24PF Begin: 9/30/2021 24hr p/f ac lim: 90% NonComp: 7Q10: LAKE PF: 18.6 IWC: NA Freq: Q J F M A M J J A S O N D 2019 - Pass - - Pass - - Pass - - Pass - 2019 - Pass - - Pass - - Pass - - Pass - 2020 - Pass - - Pass - - Pass - - Pass - 2020 - Pass - - Pass - - Pass - - Pass - 2021 - Pass - - Pass - - Pass - - Pass - 2021 - Pass - - Pass - - Pass - - Pass - 2022 - Pass - - Pass - - Pass - - Pass - 2022 - Pass - - Pass - - Pass - - Pass - 2023 - Pass - - Pass - - Pass - - - - 2023 - Pass - - Pass - - Pass - - - - Shelby WTP, City of NCO027197/001 County: Cleveland Region: MRO Basin: BRD04 Jan Apr Jul Oct SOC JOC: Ceri7dPF Begin: 11/1/2021 Chr Monit: 90% NonComp: 70,10: PF: 0.400 IWC: Freq: Q J F M A M J J A S O N D 2019 Pass - - Pass - - Pass - - Pass - - 2020 Fail - - Pass - - Pass - - Pass - - 2021 Pass - - Pass - - Pass - - Pass - - 2022 Fail - - Fail - - Pass - - Pass - - 2023 Pass - - Pass - - Pass - - Pass - - Legend: P= Fathead minnow (Pimohales Dromelas). H=No Flow (facilitv is active). s = Solit test between Certified Labs Page 94 of 114 NORTH CAROLINA 2022 INTEGRATED REPORT Upper Broad Broad River Basin AU Name AU Number Classification AU LengthArea AU Units AU ID Description First Broad River 9-50-(19.5) WS-IV 16.5 FW Miles 12762 [From Cleveland County Sanitary District Raw Water Supply Intake (just below Knob Creek) to a point 1.0 ile upstream of Shelby downstream Raw Water Intake 2022 Water Quality Assessments PARAMETER IR CATEGORY CRITERIA STATUS IBenthos (Nar, AL, FW) 1 Meeting Criteria =irst Broad River 9-50-(28) C ] 14.6 FW Miles 12 664 From Shelby Downstream Raw Water Intake to Broad River 2022 Water Quality Assessments PARAMETER IR CATEGORY CRITERIA STATUS LWater Temperature (292C, AL, MT&UP) 1 IMeeting Criteria [Dissolved Oxygen (4 mg/I, AL, FW) 1 Meeting Criteria Fr (6 su, AL, FW) 1 Meeting Criteria pH (9.0, AL, FW) Meeting Criteria Turbidity (50 NTU, AL, FW miles) Meeting Criteria Benthos (Nar, AL, FW) Meeting Criteria Fecal Coliform (GM 200/400, REC, FW) 3a Data Inconclusive Nards Creek 9-50-12 EC77 10.2 FW Miles 12767 From source to First Broad River t022 Water Quality Assessments PARAMETER Er IR CATEGORY CRITERIA STATUS =ish Community (Nar, AL, FW) 1� Meeting Criteria Duncans Creek 12771 From source to First Broad River 2022 Water Quality Assessments ARAMETER Fish Community (Nar, AL, FW) 9-50-13 10.1 W Miles IR CATEGORY t CRITERIA STATUS 1 Meeting Criteria 6/7/2022 NC 2022 INTEGRATED REPORT -Category 5 Approved by EPA 4/30/2022 Page 23 of 1346 North Carolina 2022 Section 303(d) List Decision Document Appendix B: Delistings --ASSESSMENT SES ENT UNIT PARAMETER NAME PARAMMMELISTING AhASON UNIT ID NAME NC30-19-1b Colington Creek ENTEROCOCCUS Applicable WQS attained; original basis for listing was incorrect NC30-lc Currituck Sound ENTEROCOCCUS Applicable WQS attained; original basis for listing was incorrect NC30-5-(1)b Little River CHLOROPHYLL -A Data and/or information lacking to determine WQ status; original basis for listing was incorrect NC30-9-4 Main Canal BENTHIC BIOASSESSMENTS Applicable WQS attained; based on new data NC7-3-(13.7)b Cane River TURBIDITY Data and/or information lacking to determine WQ status; original basis for listing was incorrect NC9-50-(28) First Broad River TURBIDITY Applicable WQS attained; based on new data NC20-36-(8.5)a8 Bogue Sound (Including PATHOGENS Applicable WQS attained; based on new data, Intracoastal Waterway) mapping refinement NC21-35-(0.5)bl Back Sound PATHOGENS Applicable WQS attained; based on new data, mapping refinement NC27-(118)e NEUSE RIVER Estuary PATHOGENS Applicable WQS attained; based on new data, mapping refinement NC27-128c2 Adams Creek PATHOGENS Applicable WQS attained; based on new data, mapping refinement NC27-135-19 Horton Bay PATHOGENS Applicable WQS attained; based on new data, mapping refinement NC27-137-4-1 Pitman Creek PATHOGENS Applicable WQS attained; based on new data, mapping refinement NC27-152-2 Henry Creek PATHOGENS Applicable WQS attained; based on new data, mapping refinement M.