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NC0061638_Renewal (Application)_20221114
y.'�i u STATE o ROY COOPER �, • Governor ELIZABETH S.BISER �`. "*•13,;r. Secretary Q^" , RICHARD E.ROGERS,JR. NORTH CAROLINA Director Environmental Quality November 15, 2022 Carolina Water Service Inc of North Carolina Attn: Tony Konsul, Director of State of Operations 5821 Fairview Road, Ste 401 Charlotte, NC 28209 Subject: Permit Renewal Application No. NC0061638 Amherst Subdivision WWTP Wake County Dear Applicant: The Water Quality Permitting Section acknowledges the November 7, 2022, 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. 150B-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. Sincerely, Wren Th ord Administrative Assistant Water Quality Permitting Section cc: Brent Milliron, Compliance Manager ec: WQPS Laserfiche File w/application North Carollna Department of Environmental Quality I Division of Water Resources Raleigh Regional ice 13800 Barrett Drive Raleigh North Carolina 27609 919.7914200 Mill Carolina Water Service lied of North Carolina`' November 4, 2022 Wren Thedford Division of Water Resources Water Quality Permitting Section—NPDES Archdale Building—9th Floor 512 North Salisbury Street Raleigh, NC 27604 Subject: NPDES Permit Renewal Application Amherst WWTP NPDES NC0061638 Wake County Wren Thedford, Please find the enclosed application as our official request to renew the NPDES permit for the facility referenced above. If you should have any questions or need any additional information,please do not hesitate to contact Tony Konsul (704-576-1685), Stephen Harrell (919-868-4701) or myself. Sincerely, Brent Milliron Regulatory Compliance Manager cc: Tony Konsul—Director of State Operations, CWSNC Stephen Harrell—Area Manager, CWSNC • 5821 Fairview Rd., Suite 401 • Charlotte, North Carolina 28209 • 800-525-7990 I NPDES Permit Number Facility Name Modified Application Form 2A NC0061638 Amherst WWTP Modified March 2021 Form NC Department of Environmental Quality-Application for NPDES Permit to Discharge Wastewater NPDES MINOR SEWAGE FACILITIES(Before completing this form,please read the instructions.Failure to follow the instructions ma result in denial of the application. SECTION 1.BASIC APPLICATION INFORMATION FOR ALL APPLICANTS(40 CFR 122.21(j)(1)and(9)) 1.1 Facility name Amherst WWTP Mailing address(street or P.O.box) PO Box 240908 City or town State ZIP code 0 Charlotte NC 28224 Contact name(first and last) Title Phone number Email address Tony Konsul Director of Operations (704)576-1685 tony.konsul@carolinawatersei Location address(street,route number,or other specific identifier) ❑ Same as mailing address 4917 Johnston Pond Road ur City or town State ZIP code Apex NC 27539 1.2 Is this application for a facility that has yet to commence discharge? ❑ Yes 4 See instructions on data submission ❑ No requirements for new dischargers. 1.3 Is applicant different from entity listed under Item 1.1 above? ❑ Yes El No 4 SKIP to Item 1.4. Applicant name = Applicant address(street or P.O.box) 0 0 City or town State ZIP code Contact name(first and last) Title Phone number Email address a a 1.4 Is the applicant the facility's owner,operator,or both?(Check only one response.) ❑ Owner ❑ Operator ❑✓ Both 1.5 To which entity should the NPDES permitting authority send correspondence?(Check only one response.) ❑ Facility El Applicant ❑ Facility and applicant (they are one and the same) 1.6 Indicate below any existing environmental permits.(Check all that apply and print or type the corresponding permit number for each.) Existing Environmental Permits a. ❑ NPDES(discharges to surface ❑ RCRA(hazardous waste) ❑ UIC(underground injection water) control) NC0061638 ❑ PSD(air emissions) ❑ Nonattainment program(CM) ❑ NESHAPs(CM) w • El Ocean dumping(MPRSA) ❑ Dredge or fill(CWA Section ID Other(specify) w 404) Page 1 NPDES Permit Number Facility Name Modified Application Form 2A NC0061638 Amherst WWTP Modified March 2021 1.7 Provide the collection system information requested below for the treatment works. Municipality Population Collection System Type 11 Served Served (indicate percentage) Ownership Status 100 %separate sanitary sewer O Own 0 Maintain 128 Connections Z 320 population %combined storm and sanitary sewer 0 Own 0 Maintain ca) CIUnknown 0 Own 0 Maintain o %separate sanitary sewer 0 Own 0 Maintain %combined storm and sanitary sewer ❑ Own 0 Maintain I ❑ Unknown 0 Own 0 Maintain a %separate sanitary sewer ❑ Own 0 Maintain %combined storm and sanitary sewer 0 Own 0 Maintain 0 Unknown ❑ Own 0 Maintain d %separate sanitary sewer 0 Own 0 Maintain rn %combined storm and sanitary sewer 0 Own 0 Maintain 0 Unknown 0 Own ❑ Maintain Total °' Population 325 o Served Separate Sanitary Sewer System Combined Storm and Sanita y Sewer Total percentage of each type of 100 % /° ° sewer line(in miles) 1.8 Is the treatment works located in Indian Country? C o ❑ Yes 0 No v c 1.9 Does the facility discharge to a receiving water that flows through Indian Country? co c 0 Yes ❑ No 1.10 Provide design and actual flow rates in the designated spaces. Design Flow Rate 0.046 mgd 73 y Annual Average Flow Rates(Actual) a Two Years Ago Last Year This Year cam ', ' CO i 0.0180 mgd 0.0164 mgd .016073 mgd m" Maximum Daily Flow Rates(Actual) c Two Years Ago Last Year This Year 0.017 mgd 0.0270 mgd .024 mgd to 1.11 Provide the total number of effluent discharge points to waters of the State of North Carolina by type. c Total Number of Effluent Discharge Points by Type a a Constructed Treated Effluent Untreated Effluent Combined Sewer rn� Bypasses Emergency U a — Overflows Overflows U, in 1 Page 2 NPDES Permit Number FacilityNameA Modified Application Form 2 NC0061638 Amherst WWTP Modified March 2021 Outfalls Other Than to Waters of the State of North Carolina 1.12 Does the POTW discharge wastewater to basins,ponds,or other surface impoundments that do not have outlets for discharge to waters of the State of North Carolina? ❑ Yes r❑ No 4 SKIP to Item 1.14. 1.13 Provide the location of each surface impoundment and associated discharge information in the table below. Surface Impoundment Location and Discharge Data Average Daily Volume Continuous or Intermittent Location Discharged to Surface Impoundment (check one) ❑ Continuous gpd ❑ Intermittent O Continuous gpd ❑ Intermittent O Continuous gpd ❑ Intermittent 2 1.14 Is wastewater applied to land? ❑ Yes ❑ No 4 SKIP to Item 1.16. c 1.15 Provide the land application site and discharge data requested below. H Land Application Site and Discharge Data Continuous or Location Size Average Daily Volume Intermittent Applied (check one) acres d 0 Continuous o gp 0 Intermittent z acresgpd 0 Continuous o 0 Intermittent a 0 Continuous acres gpd ❑ Intermittent A 1.16 Is effluent transported to another facility for treatment prior to discharge? o ❑ Yes © No4SKIPtoItem1.21. 1.17 Describe the means by which the effluent is transported(e.g.,tank truck,pipe). 1.18 Is the effluent transported by a party other than the applicant? ❑ Yes ❑ No 4 SKIP to Item 1.20. 1.19 Provide information on the transporter below. Transporter Data Entity name Mailing address(street or P.O.box) City or town State ZIP code Contact name(first and last) Title Phone number Email address Page 3 NPDES Permit Number Facility Name Modified Application Form 2A NC0061638 Amherst WWTP Modified March 2021 1.20 In the table below,indicate the name,address,contact information, NPDES number,and average daily flow rate of the receiving facility. Receiving Facility Data a Facility name Mailing address(street or P.O.box) I � City or town State ZIP code 0 II U Contact name(first and last) Title 0 Phone number Email address oNPDES number of receiving facility(if any) ❑None Average daily flow rate mgd 0 1.21 Is the wastewater disposed of in a manner other than those already mentioned in Items 1.14 through 1.21 that do not have outlets to waters of the State of North Carolina(e.g.,underground percolation,underground injection)? CD ❑ Yes ❑ No 4 SKIP to Item 1.23. 0 1.22 Provide information in the table below on these other disposal methods. Information on Other Disposal Methods oDisposal Location of Size of Annual Average Continuous or Intermittent Method Disposal Site Disposal Site Daily Discharge (check one) Description Volume _ ❑ Continuous acres gpd 0 Intermittent 0 Continuous acres gpd ❑ Intermittent acresgpd ❑ Continuous ❑ Intermittent 1.23 Do you intend to request or renew one or more of the variances authorized at 40 CFR 122.21(n)?(Check all that apply. „ a Consult with your NPDES permitting authority to determine what information needs to be submitted and when.) • 0 Discharges into marine waters(CWA Water quality related effluent limitation(CWA Section r▪ r ❑ Section 301(h)) ❑ 302(b)(2)) ElNot applicable 1.24 Are any operational or maintenance aspects(related to wastewater treatment and effluent quality)of the treatment works the responsibility of a contractor? ❑ Yes 0 No+SKIP to Section 2. 1.25 Provide location and contact information for each contractor in addition to a description of the contractor's operational and maintenance responsibilities. Contractor Information Contractor I Contractor 2 Contractor 3 0 Contractor name (company name) € Mailing address (street or P.O.box) City,state,and ZIP R code Contact name(first and 0i last) Phone number Email address Operational and maintenance responsibilities of contractor Page 4 NPDES Permit Number Facility Name Modified Application Form 2A NC0061638 Amherst WWTP Modified March 2021 SECTION 2.ADDITIONAL INFORMATION(40 CFR 122.21(j)(1)and(2)) o Outfalls to Waters of the State of North Carolina rn 2.1 Does the treatment works have a design flow greater than or equal to 0.1 mgd? o ❑ Yes ❑✓ No 4 SKIP to Section 3. = 2.2 Provide the treatment works'current average daily volume of inflow Average Daily Volume of Inflow and Infiltration and infiltration. gpd Indicate the steps the facility is taking to minimize inflow and infiltration. v 0 2.3 Have you attached a topographic map to this application that contains all the required information?(See instructions for 03 0. specific requirements.) o 0 0 ❑ Yes ❑ No 0 E 2.4 Have you attached a process flow diagram or schematic to this application that contains all the required information? of° (See instructions for specific requirements.) w c ❑ Yes ❑ No 2.5 Are improvements to the facility scheduled? ❑ Yes ❑ No 4 SKIP to Section 3. = Briefly list and describe the scheduled improvements. 0 1. d d 2. 0 0 3. d 4. N TS 2.6 Provide scheduled or actual dates of completion for improvements. Scheduled or Actual Dates of Completion for Improvements Affected Attainment of Scheduled Begin End Begin Outfalls Operational 2 Improvement Construction Construction Discharge (list outfall Level (from above) (MM/DD/YYYY) (MM/DD/YYYY) (MM/DD/YYYY) number) (MM/DD/YYYY) -a 1. N 2• 3. 4. 2.7 Have appropriate permits/clearances concerning other federal/state requirements been obtained?Briefly explain your response. ❑ Yes ❑ No ❑ None required or applicable Explanation: Page 5 NPDES Permit Number Facility Name Modified Application Form 2A i NC0061638 Amherst WWTP Modified March 2021 SECTION 3.INFORMATION ON EFFLUENT DISCHARGES(40 CFR 122.210)(3)to(5)) 3.1 Provide the following information for each outfall.(Attach additional sheets if you have more than three outfalls.) 001 Outfall Number Outfall Number Outfall Number State NC y Wake County co O City or town Apex 0 o Distance from shore 0 ft. ft. ft, c. d Depth below surface o ft. ft. ft. 0 Average daily flow rate .016073 mgd mgd mgd Latitude 35' 3S 37'' N ° ' Longitude 78 43' 53" w ° ' " n3 3.2 Do any of the outfalls described under Item 3.1 have seasonal or periodic discharges? o ❑ Yes ✓❑ No 4 SKIP to Item 3.4. d P, 3.3 If so,provide the following information for each applicable outfall. .c —T h Outfall Number Outfall Number Outfall Number Number of times per year •o discharge occurs CD Average duration of each o discharge(specify units) — - c Average flow of each mgd mgd mgd discharge ao c n Months in which discharge occurs 3.4 Are any of the outfalls listed under Item 3.1 equipped with a diffuser? ❑ Yes 0 No 4 SKIP to Item 3.6. a; 3.5 Briefly describe the diffuser type at each applicable outfall. a 1- Outfall Number Outfall Number Outfall Number N 0 0 3.6 Does the treatment works discharge or plan to discharge wastewater to waters of the State of North Carolina from L one or more discharge points? 3 w 0 Yes 0 No+SKIP to Section 6. Page 6 NPDES Permit Number Facility Name Modified Application Form 2A NC0061638 Amherst WWTP Modified March 2021 3.7 Provide the receiving water and related information(if known)for each outfall. Outfall Number o01 Outfall Number Outfall Number Receiving water name Middle Creek Name of watershed,river, Neuse 0 or stream system a U.S.Soil Conservation y Service 14-digit watershed 030202010901 code Name of state Neuse management/river basin rn .- U.S.Geological Survey 8-digit hydrologic 03020201 cc cataloging unit code Critical low flow(acute) cfs cfs cfs Critical low flow(chronic) cfs cfs cfs Total hardness at critical mg/L of mg/L of mg/L of low flow CaCO3 CaCO3 CaCO3 3.8 Provide the following information describing the treatment provided for discharges from each outfall. Outfall Number not Outfall Number Outfall Number Highest Level of ❑ Primary 0 Primary 0 Primary Treatment(check all that ❑ Equivalent to ❑ Equivalent to ❑ Equivalent to apply per outfall) secondary secondary secondary 0 Secondary ❑ Secondary 0 Secondary ❑ Advanced 0 Advanced 0 Advanced ❑ Other(specify) 0 Other(specify) 0 Other(specify) 0 0 Design Removal Rates by Outfall N ' BOD5 or CBODs E a`)i TSS F- ❑Not applicable 0 Not applicable ❑Not applicable Phosphorus cyo 0 Not applicable 0 Not applicable ❑Not applicable Nitrogen Other(specify) ❑Not applicable ❑Not applicable ❑Not applicable Page 7 NPDES Permit Number Facility Name Modified Application Form 2A NC0061638 Amherst WWTP Modified March 2021 3.9 Describe the type of disinfection used for the effluent from each outfall in the table below. If disinfection varies by season,describe below. d Dual hypochlorinator and dechlorinator both used. 7 0 -- Outfall Number 001 Outfall Number Outfall Number Disinfection type Chlorine co O Seasons used All Dechlorination used? ❑ Not applicable ❑ Not applicable ❑ Not applicable ❑r Yes ❑ Yes ❑ Yes ❑ No ❑ No ❑ No 3.10 Have you completed monitoring for all Table A parameters and attached the results to the application package? El Yes ❑ No 3.11 Have you conducted any WET tests during the 4.5 years prior to the date of the application on any of the facility's discharges or on any receiving water near the discharge points? ❑ Yes ❑ No 4 SKIP to Item 3.13. 3.12 Indicate the number of acute and chronic WET tests conducted since the last permit reissuance of the facility's discharges by outfall number or of the receiving water near the discharge points. Outfall Number Outfall Number Outfall Number Acute Chronic Acute Chronic Acute Chronic 0) Number of tests of discharge _ water d Number of tests of receiving Ewater W 3.14 Does the POTW use chlorine for disinfection,use chlorine elsewhere in the treatment process,or otherwise have reasonable potential to discharge chlorine in its effluent? ❑✓ Yes 4 Complete Table B,including chlorine. ❑ No 4 Complete Table B,omitting chlorine. 3.15 Have you completed monitoring for all applicable Table B pollutants and attached the results to this application package? ❑✓ Yes ❑ No Have you completed monitoring for all applicable Table D pollutants required by your NPDES permitting authority and 3.18 attached the results to this application package? El Yes No additional sampling required by NPDES permitting authority. Page 8 NPDES Permit Number Facility Name Modified Application Form 2A NC0061638 Amherst WWTP Modified March 2021 3.19 Has the POTW conducted either(1)minimum of four quarterly WET tests for one year preceding this permit application or(2)at least four annual WET tests in the past 4.5 years? No 4 Complete tests and Table E and SKIP to El Yes ❑ Item 3.26. 3.20 Have you previously submitted the results of the above tests to your NPDES permitting authority? El Yes ❑ No 4 Provide results in Table E and SKIP to Item 3.26. 3.21 Indicate the dates the data were submitted to your NPDES permitting authority and provide a summary of the results. Date(s)Submitted Summary of Results (MMIDDNYYY) v C C 0 w 3.22 Regardless of how you provided your WET testing data to the NPDES permitting authority,did any of the tests result in toxicity? ❑ Yes ❑ No 4 SKIP to Item 3.26. d 3.23 Describe the cause(s)of the toxicity: d w 3.24 Has the treatment works conducted a toxicity reduction evaluation? ❑ Yes ❑ No 4 SKIP to Item 3.26. 3.25 Provide details of any toxicity reduction evaluations conducted. 3.26 Have you completed Table E for all applicable outfalls and attached the results to the application package? El Yes ❑ Not applicable because previously submitted information to the NPDES 'ermittin' authori . Page 9 NPDES Permit Number Facility Name Modified Application Form 2A NC0061638 Amherst WWTP Modified March 2021 SECTION 6.CHECKLIST AND CERTIFICATION STATEMENT(40 CFR 122.22(a)and(d)) 6.1 In Column 1 below,mark the sections of Form 2A that you have completed and are submitting with your application.For each section,specify in Column 2 any attachments that you are enclosing to alert the permitting authority.Note that not all applicants are required to provide attachments. Column 1 Column 2 Section 1:Basic Application Information for All Applicants ❑ w/variance request(s) ❑ w/additional attachments ❑ Section 2:Additional 0 w/topographic map ❑ w/process flow diagram Information ❑ wl additional attachments ✓❑ w/Table A ❑ w/Table D s Section 3: Information on El w/Table B ❑ wl additional attachments Effluent Discharges ❑ w/Table C is �' Section 4:Not Applicable 0 Section 5:Not Applicable Section 6:Checklist and Certification Statement El wl attachments Y 6.2 Certification Statement I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted.Based on my inquiry of the person or persons who manage the system,or those persons directly responsible for gathering the information,the information submitted is,to the best of my knowledge and belief,true,accurate,and complete.I am aware that there are significant penalties for submitting false information,including the possibility of fine and imprisonment for knowing violations. Name(print or type first and last name) Official title Signature Date signed Ct (1A 29_ Page 10 NPDES Permit Number Facility Name Outfall Number Modified Application Form 2A NC0061638 Amherst WWTP 001 Modified March 2021 TABLE A.EFFLUENT PARAMETERS FOR ALL POTWS Maximum Daily Discharge Average Daily Discharge Analytical ML or MDL Pollutant Value Units Value Units NSamb lest Method' (include units) •Biochemical oxygen demand 0 ML o BOD5 or o CBOD5 5.8 mg/L 1.137 'mg/L 52 SM 5210 B-2011 2.0 mg/I o MDL resort one 0 ML Fecal coliform 690 ml 2.643 ml 52 Colilert 18 1 MPN/10I tEl MDL Design flow rate .024 MGD .016 MGD 365 pH(minimum) 7.342 STD Units pH(maximum) 9.48 STD Units Temperature(winter) 17 C 16.333 C 64 Temperature(summer) 27 C 24.833 C 131 0 ML Total suspended solids(TSS) 3.5 mg/L .193 mg/L 52 SM 2540D-2015 2.5 mg/I o MDL 1 Sampling shall be conducted according to sufficiently sensitive test procedures(i.e.,methods)approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or required under 40 CFR chapter I,subchapter N or 0.See instructions and 40 CFR 122.21(e)(3). Page 11 Number Modified Application Form 2A EPA Identification Number NPDES Permit Number Facility Name OuttenApp NC0061638 Amherst WWTP 001 Modified March 2021 TABLE B.EFFLUENT PARAMETERS FOR ALL POTWS WITH A FLOW EQUAL TO OR GREATER THAN 0.1 MGD Maximum Daily Discharge Average Daily Discharge Analytical ytca or MDL - ---- Pollutant Number of Value Units Value Units Method, (include units) SamplesD ML _ Ammonia(as N) .250 mg/L .037 mg/L 52 EPA 350.1 0.045 mg/I 2 MDL Chlorine IDML (total residual,TRC)2 0 mg/L 0 mg/L 104 SM4500 G-2011 10µg/L ❑MDL Dissolved oxygen 14.6 mg/L 7.867 mg/L 52 SM4500 0 G-2016 >5.0 mg/I CIO M ❑MLDL ID ML Nitrate/nitrite 20 mg/L 11.756 mg/L 104 EPA 353.2 0.41mg/I O MDL Kjeldahl nitrogen 6.8 mg/L 1.436 mg/L 104 EPA 351.2 0.26 mg/I 2 MDL Oil and grease N/A N/A - ❑MDL 0 ML Phosphorus 7.9 mg/L 6.033 mg/L 104 EPA 365.4 0.12mg/I MDL Total dissolved solids N/A N/A - ❑ML ❑MDL 1 Sampling shall be conducted according to sufficiently sensitive test procedures(i.e.,methods)approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or required under 40 CFR chapter I,subchapter N or 0.See instructions and 40 CFR 122.21(e)(3). 2 Facilities that do not use chlorine for disinfection,do not use chlorine elsewhere in the treatment process,and have no reasonable potential to discharge chlorine in their effluent are not required to report data for chlorine. EPA Form 3510-2A(Revised 3-19) Page 12 78°44'20"4 78°44'15'W 78°44'10"W T Of 16 •1 I el 1 ' 1 Z 1 f Influent _01.-241)„ IP Z • • • ...36104.1{ I F I , ' 1 j6114. a "CONFIDENTUl.&PROPRIETARY INFORMATION" Al^ H �� �� I DISCLAIMER:This map is not a survery. Map Produced By:CSC A "'Lim Amherst WWTP o m 4o eo w tm CWSNC makes no guarantee,implicit or Date:10/18/2022 N Water Service Meters implied,about the accuracy of this data. 7S•4410'W 7!•44'15 W 7e•4 0"W ir .11:7 1 .ciii ae \ . , I. .. • 4 Ol 2/2 mIL am omr. ..., MI i • Influent `°" .a' ill 1n lf�PP . i • I Effluent Discharge 000 4aO% • Ca z 4. LIIQ Mk • 41111 .%et ....ja.44.. 1\ • 11,,:c.. „„ . . i• z ....uwir..-. IIIII.. fi r 1 ram, "CONFIDENTIAL 8 PROPRIETARY INFORMATION" N Amherst WWTP ��, t { I DISCLAIMER This map is not a survery Map Produced By-CSC ^ v,aier se.�ce o m ao eo SO too CWSNC makes no guarantee,implicit or Date:10/18/2022 A Meter. implied,about the accuracy of this data