The URL can be used to link to this page

Home My WebLink AboutNC0048577_Fact Sheet_20200108DocuSign Envelope ID: 861AF266-C8B4-4C48-B507-025FEOF12C4E FACT SHEET FOR EXPEDITED PERMIT RENEWALS 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). Basic Information for Expedited Permit Renewals Permit Writer / Date Sydney Carpenter 12/30/2019 Permit Number NCO048577 Facility Name / Facility Class Maxton WTP / PC-1 Basin Name / Sub -basin number Lumber / 03-07-51 Receiving Stream / HUC Lumber River / 0304020303 Stream Classification / Stream Segment B; Sw; HQW / Index: 14- 4.5 Does permit need Daily Max NH3 limits? No Does permit need TRC limits/language? Already included. Does permit have toxicity testing? IWC if so. Yes; IWC % is 0.92 Does permit have Special Conditions? Yes — Chronic Toxicity Limit (Quarterly); Compliance Schedule; Permit Re -opener for WET Monitoring Does permit have instream monitorin ? Yes — Hardness Sampling Is the stream impaired (on 303(d) list)? If yes, for what arameter s ? No Any obvious compliance concerns? Numerous NOVs since last renewal, all for exceeding TRC limits. Facility has also failed 9 out of 12 toxicity tests from July 2016 — April 2019. Any permit mods since lastpermit? No New expiration date 7/31/2024 Facility Overview: The Maxton WTP operates a conventional water treatment plant designed for a potable flowrate of 12 MGD. Treatment process for raw water consists of aeration, pH adjustment with sodium hydroxide, sedimentation and filtration with pressure sand filters, and disinfection with sodium hypochlorite. Backwash is discharged to an equalization basin then pumped to the clarifier, and the supernatant is dechlorinated with calcium thiosulfate then discharged into the Lumber River. The maximum, monthly average wastewater discharge between August 2016 and August 2019 was approximately 0.3589 MGD. Compliance History: • Numerous NOVs since last renewal, all for exceeding TRC limits. • Three enforcement cases since last renewal; One in 2018 for TSS limit, and two in 2019 for TRC and Fluoride limit violations. • Facility has also failed 9 out of 12 toxicity tests from July 2016 — April 2019. DocuSign Envelope ID: 861AF266-C8B4-4C48-B507-025FEOF12C4E RPA: The maximum, monthly average wastewater discharge between August 2016 and August 2019 was approximately 0.3589 MGD. • Fluoride — no reasonable potential to exceed water quality standards; removing limit and decreasing monitoring from monthly to quarterly, as the facility has indicated that they still have the potential to discharge Fluoride. • Copper — no reasonable potential to exceed water quality standards; removing parameter from effluent table. NCG59 General Permit Eligibility (for Conventional & Greensand WTPs): • They've failed > 75% of TOX tests within the last 3 years (Jul 2016-Apr 2019), the most recent failed test occurring in April 2019 — ineligible • Conclusion: Ineligible for NCG59 General Permit. Changes from previous permit to draft: • Added regulatory citations. • Added facility grade in A. (L). • Removed former footnote #5 as this is no longer required per 2009 Changes to WTP Strategy Memo. • Removed Iron parameter in A. (L) Effluent table. Application states Iron sulfate does not have the potential to be discharged. As per "Assistance with BPJ on WTP renewals" 2012 Memo, Iron does not have a recommend limit and was monitoring only in previous permit. All reported values in previous 4 '/2 years are < 1 mg/L. • Added Zinc quarterly monitoring to A. (L) Effluent table as the parameter was inadvertently left out of the last permit renewal and the facility has indicated that it has the potential to be discharged. • Updated Turbidity monitoring frequency to Monthly per Table 5.1 in the "Changes to WTP Strategy" 2009 Memo. • Updated eDMR footnote #1 in A. (L) and updated Section A. (5.). • Updated former footnote 6 (now footnote #3) and A. (2.) with new WET testing concentration and language for results submissions. • Updated current treatment components list, new max monthly average, and HUC on the Supplement to Cover Sheet. • Added Section A. (4.) Permit Re -Opener — Whole Effluent Toxicity special condition as the facility has failed > 75% of TOX tests in the last 3 years. • Updated TRC limit in A. (L) Effluent table to the daily maximum limit allowed to protect for acute toxicity. (See IWC calculations sheet) • Removed Fluoride limit in A. (L) Effluent table as RPA did not show a reasonable potential to exceed WQS. Previous permit was erroneously permitted with zero -flow. We have confirmed with the permittee that the discharge is directly into the Lumber River. USGS provided the 7Q10 for the receiving stream, significantly increasing the dilution for the RPA, which now shows that Fluoride has no reasonable potential to exceed water DocuSign Envelope ID: 861AF266-C8B4-4C48-B507-025FEOF12C4E quality standards. However, as the facility has indicated that Fluoride still has the potential to be discharged, it will continue to be monitored, now on a quarterly basis. • Removed Copper parameter in A. (1.) Effluent table, as RPA did not show a reasonable potential to exceed WQS. • Removed Manganese parameter in A. (1.) Effluent table. As per "Assistance with BPJ on WTP renewals" 2012 Memo, Manganese does not have a recommend standard and the facility has no treatment technology to remove Manganese. • Added Hardness sampling to A. (1.) Effluent table to monitor in conjunction with hardness dependent metals already being monitored (zinc), as per "Implementation of Instream Dissolved Metals Standards" 2016 Memo. Sampling in effluent and upstream. Added corresponding footnotes #4 & #5. Changes from draft to final: • Added a limit for Chronic WET Testing in the Section A. (1) Effluent table and updated the corresponding language in footnote #3 and Section A. (2), as the Permittee has failed multiple toxicity tests within the past three years. • Added new Section A. (3) Compliance Schedule for Chronic WET test limit. • Update Flow measurement frequency to 2/Month and Sample Type to Instantaneous in the Section A. (1) Effluent table as this facility is an intermittent discharger. • Added corresponding footnote #6 regarding instantaneous flow monitoring. Comments received on draft permit: • None. DocuSign Envelope ID: 861AF266-C8B4-4C48-B507-025FEOF12C4E ROY COOPER Governor MICHAEL S. REGAN Serrwrary LINDA CULPEPPER Director Gary Davenport, WTP Superintendent Robeson County Water Department 265 McGirt Rd Maxton, NC 28364 Subject: Permit Renewal Application No. NCO048577 Maxton WTP Robeson County Dear Applicant: NORTH CAROLINA r nvlronmental Quality January 28, 2019 The Water Quality Permitting Section acknowledges the January 28, 2019 receipt of your permit renewal application and supporting documentation. Your application will be assigned to a permit writer within the Section's NPDES WW permitting branch. Per G.S. 15OB-3 your current permit does not expire until permit decision on the application is made. Continuation of the current permit is contingent on timely and sufficient application for renewal of the current permit. The permit writer will contact you if additional information is required to complete your permit renewal. Please respond in a timely manner to requests for additional information necessary to allow a complete review of the application and renewal of the permit. Information regarding the status of your renewal application can be found online using the Department of Environmental Quality's Environmental Application Tracker at: https://deq.nc.gov/permits-regulations/permit-guidance/environmental-application-tracker If you have any additional questions about the permit, please contact the primary reviewer of the application using the links available within the Application Tracker. Si��nl�c��erely, dv� Wren Thedford Administrative Assistant Water Quality Permitting Section ec: WQPS Laserfiche File w/application � North CarofinaDepartment ofEnvironmental+Qualhy I DiusanofWaterResoiPv:es l FayetteviVa Regional Off -- 1 225 Green Street, Sute 714 1 Fagettevlle, North Csrofna 29301 .'w::�Q', a� .a.s� /`� 9 0.433-3300 DocuSign Envelope ID: 861AF266-C8B4-4C48-B507-025FEOF12C4E Adegon County Water *pgtent Gary D. Davenport, Superintendent 265 McGirt Road Maxton, North Carolina 28364 January 17, 2019 N. C. Department of Environment and Natural Resources Division of Water Quality / NPDES Unit 1617 Mail Service Center, Raleigh, NC 27699-1617 Subject: NPDES Permit Renewal Maxton WTP NPDES NCO048577 Robeson County Dear Permitting Unit: (910)844-5611 t;'Ax (910) 844-5380 RECEIVED/DENIRi®WR JAN 2 3 2419 Water Resources Permitting Section Robeson County Water Department is requesting renewal of NPDES Permit NCO048577 for the Maxton WTP. The renewal package consists of-. • Cover Letter • Application — Short Form C/WTP • Flow Schematic • Solids Handling Plan • Two copies of the Renewal Package If you have any questions, please call me at: 910/844-5611 Ext 26. Sincerely, �-Y Gary Da enport, Water Treatment Superintendant Robeson County Water Department DocuSign Envelope ID: 861AF266-C8B4-4C48-B507-025FEOF12C4E NPDES PERMIT APPLICATION - SHORT FORM C - WTP For discharges associated with water treatment plants Mail the complete application to: N. C. Department of Environment and Natural Resources Division of Water Quality / NPDES Unit 1617. Mail Service Center, Raleigh, NC 27699-1617 NPDES Permit Number INCO048577 If you are completing this form in computer use the TAB key or the up - down arrows to move from one field to the next. To check the boxes, click your mouse on top of the box. Otherwise, please print or type. 1. Contact Information: Owner Name Facility Name Mailing Address City State / Zip Code Telephone Number Fax Number e-mail Address Robeson County Water Department Maxton WTP 265 MgGirt Road Maxton NC/28364 (910)844-5611 Ext. 26 (910)844-5380 gary.davenport@co.robeson.nc.us 2. Location of facility producing discharge: Check here if same as above Street Address or State Road City State / Zip Code County 3. Operator Information: Name of the firm, consultant or other entity that operates the facility. (Note that this is not referring to the Operator in Responsible Charge or ORC) Name Robeson County Water Department Mailing Address 265 MgGirt Road City Maxton State / Zip Code NC/28364 Telephone Number (910)844-5611 Ext. 26 Fax Number (910)844-5380 4. Ownership Status: Page 1 of 4 Version 5/2012 DocuSign Envelope ID: 861AF266-C8B4-4C48-B507-025FEOF12C4E NPDES PERMIT APPLICATION - SHORT FORM C - WTP For discharges associated with water treatment plants Federal ❑ State ❑ Private ❑ Public X 5. Type of treatment plant: ® Conventional (Includes coagulation, flocculation, and sedimentation, usually followed by filtration and disinfection) ❑ Ion Exchange (Sodium Cycle Cationic ion exchange) ❑ Green Sand Filter (No sodium recharge) ❑ Membrane Technology (RO, nanofiltration) Check here if the treatment process also uses a water softener ❑ 6. Description of source water(s) (i.e. groundwater, surface water) Groundwater ?. Describe the treatment process(es) for the raw water: Raw water is aerated. Sodium Hydroxide is added for pH adjustment. Water flows to a sedimentation basin and is then filtered in Pressure Sand Filters. Sodium Hypochlorite is used for disinfection. 8. Describe the wastewater and the treatment process(es) for wastewater generated by the facility: Backwash flows to an equalization basin and then pumped to thickner/ clarifier for solids removal. Supernatant from clarifiers is dechlrmated with calcium thiosulfate prior to discharge. Solids are removed from the clarifiers to sludge drying beds for dewatering and disposal. 9. Number of separate discharge points: 1 Outfall Identification number(s) 001 10. Frequency of discharge: Continuous ❑ Intermittent If intermittent: Days per week discharge occurs: 3 Duration: 8 hours 11. Plant design potable flowrate 12.0 MGD Backwash or reject flow 0.1 MGD 12. Name of receiving stream(s) (Provide a map showing the exact location of each outfall, including latitude and longitude): Lumber River 13. Please list all water treatment additives, including cleaning chemicals or disinfection treatments, that have the potential to be discharged. Page 2 of 4 Version 5/2012 DocuSign Envelope ID: 861AF266-C8B4-4C48-B507-025FEOF12C4E NPDES PERMIT APPLICATION - SHORT FORM C - WTP For discharges associated with water treatment plants Alum /, aluminum sulfate Yes No X Iron sulfate / ferrous sulfate Yes No X Fluoride Yes X No Ammonia nitrogen / Chloramines Yes No X Zinc -orthophosphate or sweetwater CP1236 Yes X No List any other additives below: Sodium Hydroxide, Sodium Hypochlorite, Calcium Thiosulfate 14. Is this facility located on Indian country? (check one) Yes ❑ m 15. Additional Information: ➢ Provide a schematic of flow through the facility, include flow volumes at all points in the water treatment process. The plan should show the point[s] of addition for chemicals and all discharges routed to an outfall [including stormwater]. Attached ➢ Solids Handling Plan Attached 16. NEW Applicants Information needed in addition to items 1-15: ➢ New applicants are highly encouraged to contact a permit coordinator with the NCDENR Customer Service Center. Was the Customer Service Center contacted? ❑ Yes ❑ No ➢ Analyses of source water collected ➢ Engineering Alternative Analysis ➢ Discharges from Ion Exchange and Reverse Osmosis plants shall be evaluated using a water quality model. 17. Applicant Certification I certify that I am familiar with the information contained in the application and that to the best of my knowledge and belief such information is true, complete, and accurate. Gary Davenport Water Treatment Superintendent Printed name of Person Sienna Title of Date North Carolina General Statute 143-215.6 (b)(2) provides that. Any person who knowingly makes any false statement representation, or certification in any application, record, report, plan, or other document files or required to be maintained under Article 21 or regulations of the Environmental Management Commission implementing that Article, or who falsifies, tampers with, or knowingly renders inaccurate any recording or monitoring device or method required to be operated or maintained under Article 21 or regulations of the. Environmental Management Commission implementing that Article, shall be guilty of a misdemeanor punishable by a fine not to exceed $25,000, or by Page 3 of 4 Version 5/2012 DocuSign Envelope ID: 861AF266-C8B4-4C48-B507-025FEOF12C4E NPDES PERMIT APPLICATION - SHORT FORM C - WTP For discharges associated with water treatment plants imprisonment not to exceed six months, or by both (18 U S C Section 1001 provides a punishment by a fine of not more than $25,000 or imprisonment not more than 5 years, or both, for a similar offense.) Page 4 of 4 Version 5/2012 DocuSign Envelope ID: 861AF266-C8B4-4C48-B507-025FEOF12C4E LAURIN8URG-MAXTON AIRPORT , Wli -, N.-'. \ B .� OUTFALL ` I 71 • HiII p , r 1 � / \•'i' -/ � J � `,sir Plu _ 1307 A, rq•� , rp Sandy Grova•` 1 cb M9 I 1 ago OOO FEEI 151 MAXrQ" f M, K2 20' K� i O• ude: 34046'50" N C 0 0 4 8 5/ 7 _ F�'�� ` �—. Rude: 79° 19'S0" �� 3 _ _ - _ ��'I d r H21SE Location X Elm Gass: WS-III Robeson County WTP Dasln: 30751 living Stream: Lumber River North SCALE 1 :24000 DocuSign Envelope ID: 861AF266-C8B4-4C48-B507-025FEOF12C4E VV C,e 0 t4-957i �°;Vj C-T�cy- DocuSign Envelope ID: 861AF266-C8B4-4C48-B507-025FEOF12C4E SLUDGE MANAGEMENT PLAN NPDES NCO048577 Robeson County WTP Filter backwash water is pumped to a clarifier where solids and clear water are separated. Sludge is pumped to drying beds for treatment and disposed of at the Robeson County Landfill. Clear water is discharged to the Lumber River. Sludge is pumped from the clarifier to the drying beds approximately every two (2) months. DocuSign Envelope ID: 861AF266-C8B4-4C48-B507-025FEOF12C4E Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators MAXIMUM DATA POINTS = 58 Table 1. Project Information 0 CHECK IF HQW OR ORW WQS Facility Name WWTP/WTP Class NPDES Permit Outfall Flow, Qw (i Receiving Stream HUC Number Stream Class ❑ Apply WS Hardness WQC 7Q10s (cfs) 7Q10w (cfs) 30Q2 (cfs) QA (cfs) 1Q1Os (cfs) Effluent Hardness ------------- Upstream Hardness ------------- Combined HardnessChronic _ Combined Hardness Acute Data Source(s) ❑ CHECK TO APPLY MODEL Maxton WTP PC-1 NCO048577 001 0.359 Lumber River 03040203 B;Sw;HQW 60.00 164.00 139.00 107.00 49.15 25 mg/L (Avg) 25mg/L(Avg) 25mg/L ---- 25 mg/L------- REQUIRED DATA ENTRY Par01 Par02 Par03 Par04 Par05 Par06E Par07 Par08 Par09 Par10 Par11 Par12 Par13 Par14 Par15 Par16 Par17 Par18 Par19 Par20 Par21 Par22 Par23 Par24 Table 2. Parameters of Concern Name w4s Type Chronic Modifier Acute i 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 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 INC N/A FW N/A pg/L Copper Aquatic Life INC 7.8806 FW 10.4720 ug/L Cyanide Aquatic Life NC 5 FW 22 10 ug/L Fluoride Aquatic Life INC 1,800 FW ug/L Lead Aquatic Life INC 2.9416 FW 75.4871 ug/L Mercury Aquatic Life INC 12 FW 0.5 ng/L Molybdenum Human Health NC 2000 HH ug/L Nickel Aquatic Life NC 37.2313 FW 335.2087 Ng/L Nickel Water Supply INC 25.0000 WS N/A Ng/L Selenium Aquatic Life INC 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 NCO048577 RPA 2019, input 12/30/2019 DocuSign Envelope ID: 861AF266-C8B4-4C48-B507-025FEOF12C4E REASONABLE POTENTIAL ANALYSIS H1 H2 Use "PASTE SPECIAL Use "PASTE SPECIAL Effluent Hardness values" then "COPY" Upstream Hardness values" then "COPY" . Maximum data . Maximum data points = 58 points = 58 Date Data BDL=1/2DL Results Date Data BDL=1/2DL Results 1 25 25 Std Dev. N/A 1 25 25 Std Dev. N/A 2 Mean 25.0000 2 Mean 25.0000 3 C.V. 0.0000 3 C.V. 0.0000 4 n 1 4 n 1 5 10th Per value 25.00 mg/L 5 10th Per value 25.00 mg/L 6 Average Value 25.00 mg/L 6 Average Value 25.00 mg/L 7 Max. Value 25.00 mg/L 7 Max. Value 25.00 mg/L 8 8 9 9 10 10 11 11 12 12 13 13 14 14 15 15 16 16 17 17 18 18 19 19 20 20 21 21 22 22 23 23 24 24 25 25 26 26 27 27 28 28 29 29 30 30 31 31 32 32 33 33 34 34 35 35 36 36 37 37 38 38 39 39 40 40 41 41 42 42 43 43 44 44 45 45 46 46 47 47 48 48 49 49 50 50 51 51 52 52 53 53 54 54 55 55 56 56 57 57 58 58 NCO048577 RPA 2019, data 1 12/30/2019 DocuSign Envelope ID: 861AF266-C8B4-4C48-B507-025FEOF12C4E REASONABLE POTENTIAL ANALYSIS Pal Par13 Use "PASTE SPECIAL Use "PASTE SPECIAL - Copper Values" then "COPY" Fluoride Values" then "COPY" . Maximum data . Maximum data points = 58 points = 58 Date Data BDL=1/2DL Results Date Data BDL=1/2DL Results 1 4/8/2015 3 3 Std Dev. 1.2735 1 5/6/2015 < 100 50 Std Dev. 980.7700 2 7/1/2015 5 5 Mean 4.8056 2 6/3/2015 < 100 50 Mean 381.4397 3 10/7/2015 4 4 C.V. 0.2650 3 7/1/2015 < 118 59 C.V. 2.5712 4 1/6/2016 8 8 n 18 4 8/5/2015 < 129 64.5 n 58 5 4/6/2016 4 4 5 9/2/2015 100 100 6 7/6/2016 < 3 1.5 Mult Factor = 1.18 6 10/7/2015 100 100 Mult Factor = 1.00 7 10/5/2016 6 6 Max. Value 8.00 ug/L 7 11/4/2015 < 100 50 Max. Value 5100.0 ug/L 8 1/17/2017 < 10 5 Max. Fred Cw 9.44 ug/L 8 12/2/2015 < 100 50 Max. Fred Cw 5100.0 ug/L 9 4/11/2017 < 10 5 9 1/6/2016 < 100 50 10 7/13/2017 < 10 5 10 2/3/2016 < 100 50 11 10/10/2017 < 10 5 11 3/2/2016 < 100 50 12 1/16/2018 < 10 5 12 4/6/2016 < 100 50 13 4/10/2018 < 10 5 13 5/4/2016 < 100 50 14 7/10/2018 < 10 5 14 5/18/2016 < 100 50 15 10/16/2018 < 10 5 15 6/8/2016 < 100 50 16 1/10/2019 < 10 5 16 7/6/2016 < 100 50 17 4/2/2019 < 10 5 17 8/10/2016 < 100 50 18 7/18/2019 < 10 5 18 9/7/2016 < 100 50 19 19 10/5/2016 < 100 50 20 20 11/8/2016 < 100 50 21 21 1/10/2017 < 100 50 22 22 1/17/2017 < 100 50 23 23 2/14/2017 300 300 24 24 3/7/2017 < 100 50 25 25 4/4/2017 200 200 26 26 4/11/2017 < 200 100 27 27 5/2/2017 100 100 28 28 6/6/2017 1100 1100 29 29 7/11/2017 < 900 450 30 30 8/8/2017 100 100 31 31 9/5/2017 100 100 32 32 10/10/2017 < 100 50 33 33 11/7/2017 < 200 100 34 34 12/5/2017 < 100 50 35 35 1 /16/2018 100 100 36 36 2/6/2018 < 100 50 37 37 3/6/2018 5100 5100 38 38 3/13/2018 400 400 39 39 4/10/2018 100 100 40 40 5/1/2018 200 200 41 41 6/5/2018 100 100 42 42 7/3/2018 5100 5100 43 43 8/7/2018 100 100 44 44 9/11/2018 100 100 45 45 10/16/2018 < 200 100 46 46 11 /6/2018 100 100 47 47 12/4/2018 1800 1800 48 48 12/11 /2018 100 100 49 49 1/10/2019 2100 2100 50 50 2/5/2019 < 100 50 51 51 3/5/2019 400 400 52 52 3/19/2019 1100 1100 53 53 4/2/2019 200 200 54 54 5/14/2019 100 100 55 55 6/4/2019 100 100 56 56 7/9/2019 400 400 57 57 7/18/2019 100 100 58 58 8/6/2019 200 200 NCO048577 RPA 2019, data -2- 12/30/2019 DocuSign Envelope ID: 861AF266-C8B4-4C48-B507-025FEOF12C4E Maxton WTP - NC0048577 Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators MAXIMUM DATA POINTS = 58 Qw (MGD) = 0.3589 WWTP/WTP Class: PC-1 1Q10S (cfs) = 49.15 IWC% @ 1Q10S = 1.119174041 7Q10S (cfs) = 60.00 1WC% @ 7Q10S = 0.918649268 7Q10W (cfs) = 164.00 IWC% @ 7Q10W = 0.338060595 30Q2 (cfs) = 139.00 1WC% @ 30Q2 = 0.39862049 Avg. Stream Flow, QA (cfs) = 107.00 IW%C @ QA = 0.5172175 Receiving Stream: Lumber River HUC 03040203 Stream Class: B;Sw;HQW Outfall 001 Qw = 0.35890323 MGD YOU HAVE DESIGNATED THIS RECEIVING STREAM AS HQW OR ORW COMBINED HARDNESS (mg/L) Acute = 25 mg/L Chronic = 25 mg/L PARAMETER NC STANDARDS OR EPA CRITERIA REASONABLE POTENTIAL RESULTS RECOMMENDED ACTION TYPE a Applied Chronic Acute ri # Det. Max Pred Cw Allowable Cw Standard Acute: 467.84 No RP, Predicted Max < 50% of Allowable Cw - No Copper NC 3.9403 FW(7Q10s) 5.2360 ug/L 18 6 9.44 Monitoring required Chronic: 428.93 No RP, Predicted Max < 50% of Allowable Cw - No No value > Allowable Cw Monitoring required Acute: NO WQS Fluoride NC 900 FW(7Q10s) ug L 58 29 5,100.0 Chronic: 97,969.9 No RP, Predicted Max < 50% of Allowable Cw - No No value > Allowable Cw Monitoring required Acute: 0 0 N/A — -Chronic: ---------- -------------------------- Acute: 0 0 N/A — -Chronic: ---------- --------------------- Acute: 0 0 N/A _ __________ Chronic: Acute: 0 0 N/A Now- —_ _ -Chronic: ---------- ------------- NCO048577 RPA 2019, rpa Page 3 of 3 12/30/2019 DocuSign Envelope ID: 861AF266-C8B4-4C48-B507-025FEOF12C4E IWC Calculations Facility: Maxton WTP Permit No.: NCO048577 Prepared By: Sydney Carpenter Enter Design Flow (MGD): 0.358903 Enter s7Q10 (cfs): 60 Enter w7Q10 (cfs): 164 Total Residual Chlorine (TRC) Daily Maximum Limit (ug/1) Ammonia (Summer) Monthly Average Limit (mg NH3-N/1) s7Q10 (CFS) 60 s7Q10 (CFS) 60 DESIGN FLOW (MGD) 0.358903 DESIGN FLOW (MGD) 0.3589 DESIGN FLOW (CFS) 0.5563 DESIGN FLOW (CFS) 0.5563 STREAM STD (UG/L) 17.0 STREAM STD (MG/L) 1.0 Upstream Bkgd (ug/1) 0 Upstream Bkgd (mg/1) 0.22 IWC (%) 0.92 IWC (%) 0.92 Allowable Conc. (ug/1) 1851 Allowable Conc. (mg/1) 85.1 Ammonia (Winter) Monthly Average Limit (mg NH3-N/1) Fecal Coliform w7Q10 (CFS) 164 Monthly Average Limit: 200/100ml DESIGN FLOW (MGD) 0.3589 (If DF >331; Monitor) DESIGN FLOW (CFS) 0.5563 (If DF<331; Limit) STREAM STD (MG/L) 1.8 Dilution Factor (DF) 108.86 Upstream Bkgd (mg/I) 0.22 IWC (%) 0.34 Allowable Conc. (mg/1) 467.6 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 Fecal Coliform 1. Monthly Avg limit x 2 = 400/100 ml = Weekly Avg limit (Municipals) = Daily Max limit (Non -Muni) DocuSign Envelope ID: 861AF266-C8B4-4C48-B507-025FEOF12C4E Wnole Ltrluent I oxlclty I esting ana Seit Ivlonitoring Summary Marion-Corpening Cr. WWTP NCO031879/001 County: McDowell Region: ARO Basin: CTB30 Feb May Aug Nov Ceri7dPF Begin: 5/1/2016 chrlim: 63%@2.5M NonComp: Single 701.10: 2.3 PF: 3.0 IWC: 67 Freq: Q J F M A M J J A S O 2015 - Pass - - Pass - - Pass - - 2016 - Pass - - Pass - - Pass - - 2017 - Pass - - Pass - - Pass - - 2018 - Pass - - Pass - - Pass - - 2019 - Pass - - Pass - - >100(P) Pass - - Mars Hill WTP NCO083712/001 County: Madison Region: ARO Basin: FRB04 Jan Apr Jul Oct Ceri7dPF Begin: 7/1/2011 Chr Monit: 5.78% NonComp: 7Q10: PF: IWC: Freq: Q J F M A M J J A S O 2015 Pass - - Pass - - Pass - - Pa: 2016 Pass - - Pass - - Pass - - Pa! 2017 Pass - - Pass - - Pass - - Pa! 2018 Pass - - Pass - - Pass - - Pa! 2019 Pass - - Pass - - Pass - - - Marshall WWTP NCO021733/001 County: Madison Region: ARO Basin: FRB04 Feb May Aug Nov Fthd24PF Begin: 4/1/2012 24hr p/f ac lim: 90% + NonComp: Single 7Q10: 535 PF: 0.40 IWC: 0.12 Freq: Q J F M A M J J A S O 2015 - Pass - - Pass - - Pass - - 2016 - Pass - - Pass - - Pass - - 2017 - Pass - - Pass - - Pass - - 2018 - Pass - - Pass - - Pass - - 2019 - Pass - - Pass - - Pass - - Martin County WTP NCO089435/001 County: Martin Region: WARO Basin: ROA09 Mar Jun Sep Dec Ceri7dPF Begin: 4/1/2014 Chr Monit: 90% NonComp: 7Q10: PF: IWC: Freq: Q J F M A M J J A S O 2015 - - - - - - - - - - 2016 - - Pass - - H - - Pass - 2017 - - Pass - - Pass - - Pass - 2018 - - Pass - - Pass - - Pass - 2019 - - Pass - - Pass - - - - Maxton WTP NCO048577/001 County: Robeson Region: FRO Basin: LUM51 Jan Apr Jul Oct Ceri7dPF Begin: 9/1/2014 Chr Monit: 90% NonComp: 7Q1O: PF: IWC: Freq: Q J F M A M J J A S O 2015 Fail - - Fail - - - - - Fa 2016 Fail - - Pass - - Fail - - Pa! 2017 Fail - - Pass - - Fail - - Fa 2018 Pass - - Fail - - Fail - - Fa 2019 Fail - - Fail - - NIR - - - SOC JOC N Pass Pass Pass Pass SOC JOC: N SOC JOC: N Pass Pass Pass Pass SOC JOC: N SOC JOC: N C r G D Fail Pass Pass Pass C Leeend: P= Fathead minnow (Pimohales oromelas). H=No Flow (facility is active). s = Solit test between Certified Labs Page 73 of 124 DocuSign Envelope ID: 861AF266-C8B4-4C48-B507-025FEOF12C4E AFFP NC0085685/NPDES Water Permit Affidavit of Publication STATE OF NORTH SS CAROLINA ) COUNTY OF ROBESON ) Tammy Oxendine, being duly sworn, says: That she is Legal Advertising Clerk of the The Robesonian, a daily newspaper of general circulation, printed and published in Lumberton, Robeson County, North Carolina; that the publication, a copy of which is attached hereto, was published in the said newspaper on November 01, 2019 That said newspaper was regularly issued and circulated on those dates. SIGNED: _ u Legal Advertising C rk Subscribed to and sworn to me this 20th day of November 2019. Public Notice North Carolina Environmental Management Commission/NPDES Unit 1617 Mail Service Center Raleigh, NC 27699-1617 Notice of Intent to Issue a NPDES Wastewater Permit The North Carolina Environmental Management Commission proposes to issue a NPDES wastewater discharge permit to the person(s) listed below. Written comments regarding the proposed permit will be accepted until 30 days after the publish date of this notice. The Director 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 to review information on file. Additional information on NPDES permits and this notice may be found on our website: http://deq.nc.gov/about/divisions/water- resou rces/water-resources-permits/wastewater-branch/npdes-wastewater/public- notices,or by calling (919) 707-3601. Robeson County Water Department has requested renewal of NPDES permit NC0085685/Lumber Bridge WTP. Facility discharges filter -backwash wastewater to UT to Big Marsh Swamp/Lumber River Basin. Currently, total residual chlorine is water -quality limited. Robeson County Water Department has requested renewal of NPDES permit NC0089864/Raemon Well WTP. Facility discharges filter -backwash wastewater to unnamed tributary to First Swamp/Lumber River Basin. Currently, total residual chlorine is water -quality limited. Robeson County Water Department has requested renewal of NPDES permit NC0086991/Sanchez Drive WTP. Facility discharges filter -backwash wastewater to unnamed tributary to Little Jacob Branch/Lumber River Basin. Currently, total residual chlorine is water -quality limited. Robeson County Water Department has requested renewal of NPDES permit NC0048577/Maxton WTP. Facility discharges filter -backwash wastewater to Lumber River/Lumber River Basin. Currently, total residual chlorine is water -quality limited. Robeson County Water Department has requested renewal of NPDES permit NC0084204/Kenric Road WTP. Facility discharges filter -backwash wastewater to unnamed tributary to Lumber River/Lumber River Basin. Currently, total residual chlorine is water -quality limited. Clarissa Jackson, Nota Public, Robeson County, North �.�'`��SSAJACkS��''•, Carolina .� My commission expires: July 23, 2021 20152554 00985551 Attn: Wren Thedford 190-NCDENR 1617 Mail Service Center RALEIGH, NC 27699 DocuSign Envelope ID: 861AF266-C8B4-4C48-B507-025FEOF12C4E USGS response to DWR USGS Low Flows request # 2019-12 (dated 2019/06/13) for Lumber River... Re: [EXTERNAL] Low -Flow Request - Approved & Sent to USGS Weaver, John <jcweaver@usgs.gov> Mon 6/17/2019 6:09 PM To: Carpenter, Sydney <sydney.carpenter@ncdenr.gov> Cc: DWR USGS Low Flows <dwrlowflows@ncdenr.gov>; Albertin, Klaus P <klaus.albertin@ncdenr.gov>; Grzyb, Julie <julie.grzyb@ncdenr.gov>; Hill, David A <david.hill@ncdenr.gov>; Kebede, Adugna <adugna.kebede@ncdenr.gov>; Fine, Jason M <jmfine@usgs.gov>; Fransen, Tom <tom.fransen@ncdenr.gov>; Weaver, John C <jcweaver@usgs.gov> CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to report.spam@nc.gov Sydney Carpenter, In response to your inquiry about the low -flow characteristics for the Lumber River upstream from USGS Sta. 02133624 Lumber River near Maxton (drainage area 365 sgmi) in Robeson County, the following information is provided: The location coordinates provided for this request are 34.776145,-79.331985 on the Lumber Riverjust upstream from INC Highway 71 (Red Springs Road, via email dated June 13, 2019, from Tom Fransen via the DWR USGS Low Flows portal). Because the point of interest is immediately upstream from the USGS streamgage at this road crossing, the low -flow characteristics provided below are based on the most recent published low -flow statistics for the streamgage near Maxton. Available data for this streamgage near Maxton is described here In operation since June 1987, the most recent low -flow statistics for this streamgage were published in a statewide report published in March 2015. It is USGS Scientific Investigations Repori 2015-5001, "Low -flow characteristics and flow -duration statistics for selected USGS continuous -record streamgaging stations in North Carolina through 2012" (Weaver, 2015). The report is available online at http//pubs.usga.gov/sir/2015/5001/. The report provides updated low -flow characteristics and flow -duration statistics for 266 active (as of 2012 water year) and discontinued streamgages across the state where a minimum of 10 climatic years discharge records were available for flow analyses. The following low -flow statistics from Table 3 of the above -referenced low -flow report are based on the period of record (analysis) during the 1988-2011 climatic years. The climatic year is the standard annual period used in low -flow analyses for continuous -record streamgages and runs from April 1 through March 31, designated by the year in which the period begins. For example, the 2011 climatic year is from April 1, 2011, through, March 31, 2012. Streamflows at this streamgage are known or considered to be unregulated. Annual 7Q10 = 60 cfs (Table 3, page 25) Annual 30Q2 = 139 cfs (Table 3, page 25) Winter 7Q10 = 164 cfs (Table 3, page 25) Annual 7Q2 = 107 cfs (Table 3, page 25) Annual average discharge = 430 cfs (period of record 1988-2012 water years; Table 5, page 81) Please note the estimated flows are provided in units of cubic feet per second (cfs). Again, please understand the information provided in this message is based on a preliminary assessment and considered provisional, subject to revision pending collection of future data and further analyses. These provisional streamflow statistics are provided via the DWR USGS Low Flows cooperative agreement between USGS and the N.C. Department of Environmental Quality, Division of Water Resources. Hope this information is helpful. Thank you. DocuSign Envelope ID: 861AF266-C8B4-4C48-B507-025FEOF12C4E Curtis Weaver J. Curtis Weaver, Hydrologist, PE USGS South Atlantic Water Science Center North Carolina - South Carolina - Georgia 3916 Sunset Ridge Road Raleigh, NC 27607 Email: jcweaver@usgs.gov Online: https://www.usgLgov/centers/sa-water Phone: (919) 571-4043 // Fax: (919) 571-4041 On Thu, Jun 13, 2019 at 4:03 PM Fransen, Tom <tom.fransen@ncdenr.gov> wrote: Your request has been approved and sent to USGS. Request for USGS to provide low -flow statistics. Request details: Request ID: 12 Date of request: 6/13/2019 6:30:01 PM Requestor: Sydney Carpenter Phone Number: 919-707-3712 Program: Water Quality Permitting Section Email: (anonymous) Agency: Division of Water Resources (DWR) or other Department of Environmental Quality (DEQ) Division Have you spoken with someone from DWR?: Reason for request: Permit Whom did you speak with?: Local Government: Consultanting Company/Organization: Contact Name: Contact Phone Number: Contact Email: Reason for request: Permit Permit Number: NCO048577 Public Water Supply ID: Site Information: River/Stream: Lumber River Latitude - Longitude: 34.776145 Other location Information: Statistics being requested: [7Q10",7Q10 - Winter","30Q2","Average Annual"] Other information: Approved by: Fransen, Tom (tom.fransen@ncdenr.gov) Comments: