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Home My WebLink AboutNC0021342_Draft Permit_20170808Water Resources ENVIRONMENTAL QUALITY ROY COOPER Covemor MICHAEL S. REGAN A-aiq 5ecr.7ay S. JAY ZI-XIMERMAN Ltrecwr August 8, 2017 Darlene O. Spivey, Mayor Town of Trenton PO Box 399 Trenton, North Carolina 28585 Subject: Draft NPDES Permit Modification Permit NCO021342 Trenton WWTP Jones County Facility Class II SIC Code 4952 Dear Mayor Spivey: Enclosed with this letter is a copy of the Draft NPDES permit modification for your facility. Please review this draft carefully to ensure thorough understanding of the requirements and conditions it contains. There are several changes from the existing permit, including the following: • Permitted flow has been expanded to 0.140 MGD pending issuance of an Authorization to Construct and submittal of an Engineer's Certification form. [See Special Condition A. (2•)] • An annual total nitrogen limit of 1,415 pounds has been added for the expanded flow. [See Special Condition A. (2.)] • New limits have been added for BODS, ammonia, and total phosphorous for the expanded flow. [See Special Condition A. (2.)] • Monitoring frequencies have been increased for most parameters at the expanded flow. [See Special Condition A. (2.)] • Instream monitoring for fecal coliform has been removed based on DWR policy and the receiving stream not being impaired for fecal coliform or classification as primary recreation. • Federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and program reports. The requirement to continue reporting discharge monitoring data electronically using the NC DWR's Electronic Discharge Monitoring Report (eDMR) internet application has been added to your NPDES permit. [See Special Condition A. (7.)] State of North Carolina I Environmental Quality I Water Resources 1617 Mail Service Center I Raleigh, North Carolina 27699-1617 919 807 6300 Page 12 Concurrent with this notification the Division is publishing a notice in a newspaper having circulation in the general Jones County area, soliciting public comments on this draft permit. Please provide any written comments you may have to the following: NCDEQ/DWR, NPDES Permitting Branch, 1617 Mail Service Center, Raleigh, NC 27699-1617 no later than 30 days after receipt of this draft permit. Following the 30 -day public comment period, the Division will review all pertinent comments and take appropriate action prior to issuing a final permit. If you have questions concerning this draft permit, please call me at (919) 807-6304 or by email at david.hill@ncdenr.gov. Sincerely, David Hill, Environmental Senior Specialist NPDES Complex Permitting Unit Hardcopy: NPDES Files Ecopy: DWR/Washington Regional Office / Water Quality DWR/Operator Certification Program/Maureen Kinney Permit NCO021342 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENTAL QUALITY DIVISION OF WATER RESOURCES PERMIT TO DISCHARGE WASTEWATER UNDER THE NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM In compliance with the provisions of North Carolina General Statute 143-215.1, other lawful standards and regulations promulgated and adopted by the North Carolina Environmental Management Commission, and the Federal Water Pollution Control Act, as amended, the Town of Trenton is hereby authorized to discharge wastewater from a facility located at the Trenton Wastewater Treatment Plant 608 Jones Street Trenton Jones County to receiving waters designated as the Trent River in the Neuse River Basin in accordance with effluent limitations, monitoring requirements, and other conditions set forth in Parts I, II, III and IV hereof. This permit shall become effective Month XX, 2017. This permit and authorization to discharge shall expire at midnight on May 31, 2018. Signed this day Month XX, 2017. DR -AFT S. Jay Zimmerman, P.G. Director, Division of Water Resources By the Authority of the Environmental Management Commission Permit NCO021342 SUPPLEMENT TO PERMIT COVER SHEET All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked. As of this permit issuance, any previously issued permit bearing this number is no longer effective. Therefore, the exclusive authcnty to operate and discharge from this facility arises under the permit conditions, requirements, terns, and provisions included herem. The Town of Trenton is hereby authorized to: 1. Continue to operate and maintain an existing 0.070 MGD wastewater treatment facility consisting of the following components • Bar screen • Surge tank • Dual extended -aeration plants, each consisting of an aeration basm and secondary clarifier • Chlorine contact chamber • Tablet dechlorination • Dual post aeration basins • Aerobic sludge digester • Sludge drying beds • Sludge decanting tanks • Lime addition facilities • Standby power • Effluent measuring device This facility is located at the Trenton Wastewater Treatment Plant, 608 Jones Street, Trenton in Jones County. 2 Upon receipt of an Authorization to Construct, construct a new wastewater treatment facility with an average design flow of up to 0.14 MGD 3. Upon submitting an Engineer's Certification form and receiving an Authorization to Operate, operate said treatment works; 4. Discharge from said treatment works at the location specified on the attached map via Outfall 001 into the Trent River, classified C -Swamp NSW water in the Neuse River Basin 1 of 9 Permit NCO021342 PART I A. (L) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS [15A NCAC 02B .0400 et seq., 15A NCACO2B .0500 et seq.] During the period beginning on the effective date of the permit and lasting until expansion to 0.140 MGD or until expiration, the permittee is authorized to discharge treated domestic wastewater from Outfall 001. Such discharges shall be limited and monitored' by the pernuttee as specified below: PARAMETER CHARACTERISTICS PARAMETER CODE EFFLUENT LIMITS MONITORING REQUIREMENTS Monthly Average Weekly Average Daily Maximum Measurement Sample Frequency Type Sample Location2 Flow 50050 0 070 MGD /f f Continuous Recording I or E Total Monthly Flow (MG) Monitor and Report Monthly Recording or Calculated I or E BOD, 5 day, 20°C3 C0310 30 0 mg/L 45 0 mg/L Weekly Composite I and E Total Suspended Solids C0530 30 0 mg/L 45 0 mg/L Weekly Composite I and E NH3 as N (Apr 1- Oct 31 C0610 15 0 mg/L 35 0 mg/L Weekly Composite E NH3 as N (mg/L) (Nov 1- Mar 31) C0610 Weekly Composite E Dissolved Oxygen (mg/L) 00300 Weekly , Grab U and D pH 00400 Between 6 0 and 9 0 Standard Units 2/week Grab E Fecal Coliform (geometric mean)ti 31616 200/100mL' ,,400/100 mL Weekly Grab E Total Residual Chlorine 50060 28 µg/L Weekly Grab E Temperature °C 00010 Weekly Grab E Temperature °C 00010 Weekly Grab U and D TKNS (mg/L) 00625 Monitor and Report 2/Month Composite E NO3-N + NO2-N5 (mg/L) 00630 Monitor and Report 2/Month Composite E Total Nitro ens (mg/1)C0600 Monitor and Report 2/Month Calculated E TN Load6 "y QM600 Monitor and Report (pounds/month) Monthly Calculated E TN Load6 f QY600 Monitor and Report (pounds/year) Annually Calculated E Total Phosphorus (mg/L) C0665 Monitor and Report 2/Month Composite E Footnotes: 1. The permittee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR application system. See Special Condition A. (7.). 2. Sample locations I -Influent, E -Effluent, U -Upstream = 100 feet upstream from the outfall, D - Downstream = approximately 2.8 ymiles downstream from the outfall. 3. The monthly average effluent BODS and Total Suspended Solids concentrations shall not exceed 15% of the respective,influent value (85% removal). 4. The Division shall consider all effluent total residual chlorine values reported below 50 gg/l to be in compliance with the permit. However, the permittee shall continue to record and submit all values reported by a North Carolina certified laboratory (including field certified), even if these values fall below 50 µg/l. 5 For a given wastewater sample, TN = TKN + NO3-N + NO2-N, where TN is Total Nitrogen, TKN is Total Kjeldahl Nitrogen, and NO3-N and NO2-N are Nitrate and Nitrite Nitrogen, respectively 6. TN Load is the mass quantity of Total Nitrogen discharged in a given period of time. See Special Condition A. (3.), Calculation of Total Nitrogen Loads. There shall be no discharge of floating solids or visible foam in other than trace amounts. 2of9 Permit NCO021342 A. (2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS [15A NCAC 02B .0400 et seq., 15A NCACO2B .0500 et seq.] During the period beginning upon expansion (and receipt of an Engineer's Certification) to 0.140 MGD and lasting until expiration, the permittee is authorized to discharge treated domestic wastewater from Outfall 001. Such discharges shall be limited and monitored' by the permittee as specified below: PARAMETER CHARACTERISTICS PARAMETER CODE EFFLUENT LIMITS MONITORING REQUIREMENTS Monthly Average Weekly Average Daily Maximum Measurement Sample Sample Frequency Type Location2 Flow 50050 0 140 MGD ` Continuous Recording I or E Total Monthly Flow (MG) Monitor and Report j Monthly Recording or Calculated I or E BOD, 5 day, 20°C3 C0310 15 0 mg/L 22 5 mg/L ` 3/Week Composite I and E Total Suspended Solids3 C0530 30 0 mg/L 45 0 mg/L',, 3/Week Composite I and E NH3 as N Art -Oct 31) C0610 4 6 mg/L 13 8 mg/L 3/Week Composite E NH3 as N (mg/L) ov 1 -Mar 31) C0610 ` 3/Week Composite E Dissolved Oxygen (mg/L) 00300 Daily Mmimu`m > 5 0 mg/L,' 3/Week\, Grab E Dissolved Oxygen (mg/L) 00300 /' . Variable' Grab U and D pH 00400 \Be=ween 6 0 and 9 0 Standard Units 3/Week Grab E Fecal Coliform (geometric mean 31616 200/ 100 mL- , 400/100 mL 3/Week Grab E Temperature °C 00010 3/Week Grab E Temperature °C f- 00010 �, Variable' Grab U and D TKN' (mg/L) / 00625 Monitor and Report- Weekly Composite E NO3-N + NO2-NQ (mg/L) ( 00630 , Momtor and Report Weekly Composite E Total Nitrogen, (mg/L) `• C0600 Monitor and Report Weekly Calculated E TN Load4.5 ',,&600 ,' Monitor and Report (pounds/month) Monthly Calculated E TN Load 4,5 QY600 1,415 lbs/year6 Annually Calculated E Total Phosphorus (mg/L) C0665 710 mg/L- , Weekly Composite E Footnotes: , 1. The permittee shall submit Discharge Monitoring'Reports electronically using NC DWR's eDMR application system. See Special Condition A. (7 ) 2. Sample locations I -Influent, E -Effluent, U -Upstream = 100 feet upstream from the outfall, D - Downstream = approximately 2.8 miles ' downstream from the outfall. Upstream and downstream samples shall be grab samples'collected 3/week during June, July, August, and September and I/week during the remainder of the year. 3. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15% of the respective influent value (85% removal). 4. For a given wastewater sample, TN = TKN + NO3-N + NO2-N, where TN is Total Nitrogen, TKN is Total Kjeldahl Nitrogen, and NO3-,N and NO2-N are Nitrate and Nitrite Nitrogen, respectively. 5 TN Load is the mass quantity of Total Nitrogen discharged in a given period of time. See Special Condition A. (3.), Calculation of Total Nitrogen Loads. 6.' Compliance with this limit shall be determined in accordance with Special Condition A. (4.) of this permit, Annual Limits for Total Nitrogen. There shall be no discharge of floating solids or visible foam in other than trace amounts. 3 of 9 Permit NC0021342 A. (3.) CALCULATION OF TOTAL NITROGEN LOADS [G.S. 143-215.1(b)] a. The permittee shall calculate monthly and annual TN Loads as follows: 1. Monthly TN Load (lb/mo) = TN x TMF x 8.34 where TN = "the average Total Nitrogen concentration (mg/L) of the composite samples collected during the month TMF = the Total Monthly Flow of wastewater discharged during the month (MG/mo) 8.34 = conversion factor, from (mg/L x MG) to pounds f ii. Annual TN Load (lb/yr) = Sum of the 12 Monthly TN Loads for the calendar year b. The permittee shall report monthly Total Nitrogen results (mg/L and lb/mo) in the appropriate discharge monitoring report for each month and shalf report each year's results (lb/yr) with the December report for that year A. (4.) ANNUAL LIMITS FOR TOTAL NITROGEN [G.S.143-215.1(b)] a. Total Nitrogen (TN) allocations and IN Load limits for NPDES dischargers in the Neuse River basin apply on a calendar year basis. b. For any given calendar year, the permittee shall be in compliance with the annual TN Load limit in this permit if: (i.) the permittee's annual TN discharge is less than or equal to its TN Load limit, or (ii.) the permittee is a co -permittee member of a compliance association. c. If the permittee is not a co -permittee member of a compliance association and the permtttee's cumulative -annual TN discharge exceeds the effective TN Load limit in this permit at any point during the calendar year, the permittee is in violation of its TN Load limit, and each day of a continuing violation shall constitute a separate violation. d. The TN Load limit in this permit (if any) may be modified as the result of allowable changes in the permrttee's TN allocation. 1 Allowable changes include those resulting from purchase of TN allocation from the Wetlands Restoration Fund; purchase, sale, trade, or lease of allocation between the permittee and other dischargers; regionalization; and other transactions approved by the Division. ii. The permittee may request a modification of the TN Load limit in this permit to reflect allowable changes in its TN allocation. Upon receipt of timely and proper application, the Division will modify the permit as appropriate and in accordance with state and federal program requirements iii. Changes in TN limits become effective on January 1 of the year following permit modification. The Division must receive application no later than August 31 for changes proposed for the following calendar year. iv. Application shall be sent to. 4 of 9 Permit NC0021342 NCDWR ; NPDES Programs Attn: Neuse River Basin Coordinator 1617 Mail Service Center Raleigh, NC 27699-1617 e. If the permittee is a member and co -permittee of an approved compliance association, its TN discharge during that year is governed by that association's group NPDES permit and the TN limits therein. i. The permittee shall be considered a co -permittee member for any given calendar year in which it is identified as such in Appendix A of the association's group NPDES permit. ii. Association roster(s) and members' TN allocations will be updated annually and in accordance with state and federal program requirements in. If the permittee intends to loin or leave a compliance association, the Division must be notified of the proposed action in accordance with the procedures defined in the association's NPDES permit. (A) Upon receipt of timely and proper notification, the Division will modify the permit as appropriate and in accordance with state and federal program requirements. (B) Membership changes in a compliance association become effective on.January 1 of the year following modification of the association's permit. The TN monitoring and reporting requirements in this permit remain in effect until expiration of this permit and are not affected by the permittee's membership in a compliance association. A. (5.) TOTAL NITROGEN ALLOCATIONS [G.S. 143-215.1(b)] a. The following table lists the Total Nitrogen (TN) allocation(s) assigned to, acquired by, or transferred to the permittee in accordance with the Neuse River nutrient management rule (Tl 5A NCAC 02B.0234) and the status of each as of permit issuance. For compliance purposes, this table does not supercede any TN limit(s) established elsewhere in this permit or in the NPDES permit of a compliance association of which the,permittee is a co -permittee member. Footnote: (1) Transport Factor= 100% a. Any addition, deletion, or modification of the listed allocation(s) (other than to correct typographical errors) or any change of any of the listed allocations to from Reserve to Active status shall be considered a major modification of this permit and shall be subject to the public review process afforded such modifications under state and federal rules. 5 of 9 Allocation Amount (1) Allocation Type Source Date Status Estuary (lb/ Discharge year) (lb/year) Assigned by Rule Base (Tl 5A NCAC 12/7/97 1,415 1,415 Active 0213.0234) Total 1,415 1,415 Active Footnote: (1) Transport Factor= 100% a. Any addition, deletion, or modification of the listed allocation(s) (other than to correct typographical errors) or any change of any of the listed allocations to from Reserve to Active status shall be considered a major modification of this permit and shall be subject to the public review process afforded such modifications under state and federal rules. 5 of 9 Permit NCO021342 A. (6.) EFFLUENT MERCURY ANALYSIS [G.S. 143-215.1(b)] The permittee shall provide one effluent mercury analysis, using EPA Method 1631E, in conjunction with the next permit renewal application. The analysis should be taken within 12 months prior to the application date. Any additional effluent mercury measurement conducted from the effective day of this permit and up to the application date shall also be submitted with the renewal application. If the result of the mercury analysis is not provided with the application, the application may be returned as incomplete and the permittee considered non-compliant. f A. (7.) ELECTRONIC REPORTING OF MONITORING REPORTS [G.S. 143-215.1(b)] Federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and program reports. The final NPDES Electronic Reporting Rule was adopted and became effective on December 21, 2015 NOTE: This special condition supplements or supersedes the following sections within Part H of this permit (Standard Conditions for NPDES Permits) • Section B. (11.) Signatory Requirements • Section D. (2.) Reporting • Section D. (6.) Records Retention • Section E (5.) Monitoring Reports 1. Reporting Reauirements [Supersedes Section D. (2.) and Section E. (5.) (a)1 The permittee shall report discharge monitoring data electronically using the NC DWR's Electronic Discharge Monitoring Report (eDMR) internet application. Monitoring results obtained during the previous month(s) shall be summarized for each month and submitted electronically using eDMR. The eDMR system allows permitted facilities to enter monitoring data and submit DMRs electronically using the internet. Until such time that the state's eDMR application is compliant with EPA's Cross -Media Electronic Reporting Regulation (CROMERR), permittees will be required to submit all discharge monitoring data to the state electronically using eDMR and will be required to complete the eDMR submission by printing, signing, and submitting one signed original and a copy of the computer printed eDMR to the following address: NC DEQ / Division of Water Resources / Water Quality Permitting Section ATTENTION: Central Files 1617 Mail Service Center Raleigh, North Carolina 27699-1617 If a permittee is unable to use the eDMR system due to a demonstrated hardship or due to the facility being physically located in an area where less than 10 percent of the households have broadband 6 of 9 Permit NC0021342 access, then a temporary waiver from the NPDES electronic reporting requirements may be granted and discharge monitoring data may be submitted on paper DMR forms (MR 1, 1. 1, 2, 3) or alternative forms approved by the Director. Duplicate signed copies shall be submitted to the mailing address above. See "How to Request a Waiver from Electronic Reporting" section below. Regardless of the submission method, the first DMR is due on the last day of the month following the issuance of the permit or in the case of a new facility, on the last day of the month following the commencement of discharge. Starting on December 21, 2020, the permittee must electronically report the following compliance monitoring data and reports, when applicable: Sewer Overflow/Bypass Event Reports; Pretreatment Program Annual Reports; and Clean Water Act (CWA) Section 316(b) Annual Reports. The permittee may seek an electronic reporting waiver from the Division (see "How to Request a Waiver from Electronic Reporting" section below). 2. Electronic Submissions In accordance with 40 CFR 122.41(1)19), the permittee must identify the initial recipient at the time of each electronic submission. The permittee should use the EPA's website resources to identify the initial recipient for the electronic submission. Initial recipient of electronic NPDES information from NPDES-regulated facilities means the entity (EPA or the state authorized by EPA to implement the NPDES program) that is the designated entity for receiving electronic NPDES data [see 40 CFR 127.2(b)]. EPA plans to establish a website that will also link to the appropriate electronic reporting tool for each type of electronic submission and for each state. Instructions on how to access and use the appropriate electronic reporting tool will be available as well. Information on EPA's NPDES Electronic Reporting Rule is found at: https•//www.federalregister.2ov/documents/2015/10/22/2015- 24954/national-pollutant-discharge-elimination-system-npdes-electronic-reporting-rule Electronic submissions must start by the dates listed in the "Reporting Requirements" section above 3. How to Request a Waiver from Electronic Reporting The permittee may seek a temporary electronic reporting waiver from the Division. To obtain an electronic reporting waiver, a permittee must first submit an electronic reporting waiver request to the Division Requests for temporary electronic reporting waivers must be submitted in writing to the Division for written approval at lea -3t sixty (60) days prior to the date the facility would be required under this permit to begin submitting monitoring data and reports. The duration of a temporary waiver shall not exceed 5 years and shall thereupon expire At such time, monitoring data and reports shall be submitted electronically to the Division unless the permittee re -applies for and is granted a new temporary electronic reporting waiver by the Division Approved electronic reporting waivers are not transferrable. Only permittees with an approved reporting waiver request may submit monitoring data and reports on paper to the Division for the period that the approved reporting waiver request is effective. 7 of 9 Information on eDMR and the application for a temporary electronic reporting waiver are found on the following web page: httj)://deg nc gov/about/divisions/water-resources/edmr 4. Signatory Requirements [Supplements Section B. (11.) (b) and Supersedes Section B. (11.) (d)1 All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part H, Section B (I 1.)(a) or by a duly authorized representative of that person as described in Part 11, Section B. (11.)(b). A person, and not a position, must be delegated signatory authority for eDMR reporting purposes. For eDMR submissions, the person signing and submitting the DMR must obtain an eDMR user account and login credentials to access the eDMR system. For more information on North Carolina's eDMR system, registering for eDMR and obtaining an eDMR user account, please visit the following web page: http://deq nc gov/about/divisions/water-resources/edmr Certification. Any person submitting an electronic DMR using the state's eDMR system shall make the following certification [40 CFR 122.22] NO OTHER STATEMENTS OF CERTIFICATION WILL BE ACCEPTED: "I cert, 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 fines and imprisonment for knowing violations " 5. Records Retention [Supplements Section D. (6.)] The permittee shall retain records of all Discharge Monitoring Reports, including eDMR submissions. These records or copies shall be maintained for a period of at least 3 years from the date of the report This period may be extended by request of the Director at any time [40 CFR 122.41]. -4- • • Trenton •; •. , • . Proposed Outfall Old .: • ' • • 35.06494 N 77.35087 W 1111:1 • ',Y,,• �• : • `-••4 L`' • \ - Q � ' • •r • =s � \1 C �a f � _ ill Rac�e Outfall 001 Kulll � " +,yo- .� r-. �. ,�\. �`.. - _ �• �. �i _. � • 1r.s G, s _.---; �• � � f_ ., � tee: i Racjto Tower (WCTI TVI _ I' 13 13.6 t Y Trenton VWNTP - NCO021342 Facility Location USGS Quad Name: Trenton, NC Lat.: 35° 03' 50" Receiving Stream: Trent River Long.: 77° 21' 00" Stream Class: C -Swamp, NSW Subbasin: Neuse - 03-04-11 North Jones County rJ r 1 • 120 �, . , � -, f• 1 ` , D 319 • • 1l x' . —_121) Tre ob t i`, .� • P,F�O,POSE 1 ,' • �' 14E1�,000 G p 1123 . •t gISCR J '� •• • ' isno�aj�• • • • •' \ .; e LOC 10 UMP , ... —Ll Ly 1 110, 0 OCATION.\ O PRgPABANQO E f C7t 140,00Q G D VVVVTP { � r • �� j t� _ I f .\fit � ! l L,\' 6 � I 2 A FORCE' x mo j - •. Y MAIN$ ^1 ({�j -as � `� • -• X rsa �" `� ' ; 1321 , r CTower ° TI TV) , i rzo `' 1325 1123 x fSA I 160 --- ! TOWN OF TRENTON NPDES PERMIT EE1 1" y z000 0 2000 1', 4000 _ ,4 70,000 GPD EXPANSION - t x14.0 TO 140,000 GPD '� .—� .1 .., I