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HomeMy WebLinkAboutWQ0029821_Final Permit_20170605Water Resources ENVIRONMENTAL QUALITY June 5, 2017 MOSES A. THOMPSON — DIRECTOR OF OPERATIONS AQUA NORTH CAROLINA, INC. 202 MACKENAN DRIVE CARY, NORTH CAROLINA 27511 Dear Mr. Thompson: ROY COOPER Governor MICHAEL S. REGAN Secretary S. JAY ZIMMERMAN Director Subject: Permit No. WQ0029821 Bogue Watch WWTP High -Rate Infiltration System Carteret County In accordance with your permit renewal request received March 7, 2017, we are forwarding herewith Permit No. W00029821 dated June 5, 2017, to Aqua North Carolina, Inc. for the continued operation of the subject wastewater treatment and high -rate infiltration facilities. This permit shall be effective from the date of issuance until May 31, 2022, shall void Permit No. W00029821 issued July 16, 2014, and shall be subject to the conditions and limitations as specified therein. Please pay particular attention to the monitoring requirements listed in Attachments A and B for they may differ from the previous permit issuance. Failure to establish an adequate system for collecting and maintaining the required operational information shall result in future compliance problems. Please note the following permit conditions have been removed since the last permit issuance dated July 16,2014: ➢ Old Condition I.1 —The final Engineer's Certification received by the Division on September 15, 2016 states the replacement of the three submersible pumps, relocation of the flow meter, and construction of the force main permitted under W00037078. ➢ Old Condition L2 — The final Engineer's Certification was received by the Division on September 15, 2016. Please note the following permit conditions are new since the last permit issuance dated July 16,2014: ➢ Condition 111. 14 —Requires the turbidimeter to be tested and calibrated once per year. ➢ Attachment A — Total Kjeldahl Nitrogen and Total Phosphorous have been added to PPI 002 W WTP effluent limitations and monitoring requirements. "' Nothing Compares ---. State of North Carolina I Environmental Quality I Water Resources I Water Quality Permitting I Non -Discharge Permitting 1617 Mail Service Center I Raleigh, North Carolina 27699-1617 919-807-6332 Mr. Moses A. Thompson June 5, 2017 Page 2 of 2 If any parts, requirements or limitations contained in this permit are unacceptable, the Permittee has the right to request an adjudicatory hearing upon written request within 30 days following receipt of this permit. This request shall be in the form of a written petition, conforming to Chapter 1508 of the North Carolina General Statutes, and filed with the Office of Administrative Hearings at 6714 Mail Service Center, Raleigh, NC 27699-6714. Unless such demands are made, this permit shall be final and binding. If you need additional information concerning this permit, please contact Ashley Kabat at (919) 807-6348 orashlev.kabat ,ncdenr.gov. Sincerely, Jay Zimmerman, P.G., Director Division of Water Resources cc: Carteret County Health Department (Electronic Copy) Wilmington Regional Office, Water Quality Regional Operations Section (Electronic Copy) Digital Permit Archive (Electronic Copy) Central Files NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION DEPARTMENT OF ENVIRONMENTAL QUALITY RALEIGH HIGH -RATE INFILTRATION SYSTEM PERMIT In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as amended, and other applicable Laws, Rules and Regulations PERMISSION IS HEREBY GRANTED TO Aqua North Carolina, Inc. Carteret County FOR THE operation of a 150,000 gallon per day (GPD) wastewater treatment and high -rate infiltration facility consisting of the: construction only of: approximately 170 linear feet (LF) of 4 -inch force main from the property line where the force main connects to a dry treated effluent return line from Cannonsgate at Bogue Sound WWTP (Permit No. WQ0028666) to a capped end just west of the Bogue Watch W WTP effluent pump station; and all associated piping, valves, controls, and appurtenances; the continued operation of: a mechanically cleaned bar screen; a 65,700 gallon flow equalization basin with three 125 gallon per minute (GPM) submersible pumps; approximately 120 LF of 4 -inch force main from the flow equalization basin to the property line where the force main connects to the conveyance line from the Bogue Watch W WTP to the Cannonsgate at Bogue Sound W WTP (Permit No. WQ0037078); and all associated piping, valves, controls, and appurtenances; and the continued operation of: a diffused aeration system and a submersible mixer; a flow splitter box; an influent flow meter; a dual -train 150,000 GPD micro -filtration membrane bioreactor system with each train consisting of a 3 millimeter (mm) drum screen, a stage -one anoxic zone, a stage -two aerobic zone, and a stage -three membrane tank with coarse bubble diffusers; a dual train ultraviolet (UV) disinfection system; an effluent pump station with dual 200 GPM submersible pumps; an effluent flow meter; a sodium hypochlorite injection storage and feed system with a continuous online total chlorine analyzer; an in -plant process wastewater pump station with dual 100 GPM submersible pumps; an on-site odor control system; a continuous turbidity recorder; a permanent auxiliary power generator; a 113,089 cubic foot (ft') lined five-day upset storage pond; a 388,634 ft' high -rate infiltration basin; a 661,993 ft' high -rate infiltration basin; a green area; an infiltration basin level control system consisting of a perforated groundwater collection pipe network surrounding the two infiltration basins; motorized groundwater control valves; a groundwater pumping station with dual 300 GPM submersible pumps and a groundwater spray irrigation system; and all associated piping, valves, controls, and appurtenances to serve the Bogue Watch W WTP, with no discharge of wastes to surface waters, pursuant to the application received March 7, 2017, and in conformity with the project plans, specifications, and other supporting data subsequently filed and approved by the Department of Environmental Quality and considered a part of this permit. W00029821 Version 2.0 Shell Version 151201 Pagel of 8 I. This permit shall be effective from the date of issuance until May 31, 2022, shall void Permit No. WQ0029821 issued July 16, 2014, and shall be subject to the following specified conditions and limitations: 1. The Wilmington Regional Office, telephone number (919) 796-7215, shall be notified at least 48 hours in advance (excluding weekends and holidays) of operation of the installed facilities such that an in- place inspection can be made. Notification to the regional supervisor shall be made from 8:00 a.m. until 5:00 p.m. on Monday through Friday, excluding State Holidays. [15A NCAC 02T .0108(b)(2)] 2. Gauges to monitor waste levels in the 113,089 cubic foot (113) lined five-day upset storage pond, 388,634 ft3 high -rate infiltration basin, and 661,993 ff high -rate infiltration basin shall be installed prior to operation. Caution shall be taken not to damage the integrity of the liner (if present) when installing the gauges. [15A NCAC 02T .0108(b)(2), 02T .0705(c)] 3. No later than six months prior to the expiration of this permit, the Permittee shall request renewal of this permit on official Division forms. Upon receipt of the request, the Division will review the adequacy of the facilities described therein, and if warranted, will renew the permit for such period of time and under such conditions and limitations as it may deem appropriate. Please note Rule 15A NCAC 02T .0105(d) requires an updated site map to be submitted with the permit renewal application. [ 15A NCAC 02T .0105(d), 02T .0106, 02T .0109, 02T .0115(c)] 4. If the subject wastewater treatment or infiltration facilities are in noncompliance with the terms and conditions of this permit, governing statutes or regulations, the subject facilities shall be connected to an operational publicly owned wastewater collection system within 180 days of its availability. Prior to the initiation of these connection activities, appropriate Division approval shall be received. [15A NCAC 02H .0404(e)] IT. PERFORMANCE STANDARDS 1. The subject non -discharge facilities shall be effectively maintained and operated at all times so there is no discharge to surface waters, nor any contravention of groundwater or surface water standards. In the event the facilities fail to perform satisfactorily, including the creation of nuisance conditions due to improper operation and maintenance, or failure of the infiltration areas to adequately assimilate the effluent, the Permittee shall take immediate corrective actions including Division required actions, such as the construction of additional or replacement wastewater treatment or infiltration facilities. [G.S. 143-215.1, 143-213.3(a)] 2. This permit shall not relieve the Permittee of their responsibility for damages to groundwater or surface water resulting from the operation of this facility. [15A NCAC 02B .0200, 02L .0100] 3. Effluent quality shall not exceed the limitations specified in Attachment A. [15A NCAC 02T .0108(b)(1), 02T .0705(b)] 4. Application rates, whether hydraulic, nutrient or other pollutant, shall not exceed those specified in Attachment B. [15A NCAC 02T .0705(m)] 5. A usable green area shall be maintained for effluent disposal. The green area shall contain at least 1,000 square feet of open green area for each residential unit served, or 2,500 square feet per thousand gallons per day of waste flow, whichever is less. A green area is defined as an area suitable for waste disposal, either in its natural state or which has been modified by planting a vegetative cover of grasses or low growing shrubbery. [15A NCAC 02H .0404(g)(7)] 6. The compliance and review boundaries are established at the property boundary. Any exceedance of standards at the compliance or review boundary shall require action in accordance with 15A NCAC 02L .0106. [15A NCAC 02H .0219(k)(1)(C)(i)(III)] W00029821 Version 2.0 Shell Version 151201 Page 2 of 8 7. The Permittee shall apply for a permit modification to establish a new compliance boundary prior to any sale or transfer of property affecting a compliance boundary. [15A NCAC 02L .0107(c)] 8. In accordance with 15A NCAC 02L .0107(d), no wells, excluding Division approved monitoring wells, shall be constructed within the compliance boundary except as provided for in 15A NCAC 02L .0107(g). [15A NCAC 02L .0107] 9. Except as provided for in 15A NCAC 02L .0107(g), the Permittee shall ensure any landowner who is not the Permittee and owns land within the compliance boundary shall execute and file with the Carteret County Register of Deeds an easement running with the land containing the following items: a. A notice of the permit and number or other description as allowed in 15A NCAC 02L .0107(f)(1); b. Prohibits construction and operation of water supply wells within the compliance boundary; and c. Reserves the right of the Permittee or the State to enter the property within the compliance boundary for purposes related to the permit. The Director may terminate the easement when its purpose has been fulfilled or is no longer needed. [15ANCAC 02L .0107(f)] 10. The facilities permitted herein shall be constructed according to the following setbacks: a. The setbacks for high -rate infiltration sites permitted under 15A NCAC 02H .0200 shall be as follows (all distances in feet): i. Surface waters not classified SA: 25 ii. Surface waters classified SA: 100 iii. Any well with exception of monitoring wells: 100 [15A NCAC 02H .0219(k)] b. The setbacks for storage and treatment units permitted under 15A NCAC 02H .0200 shall be as follows (all distances in feet): i. Any well with exception of monitoring wells: 100 ii. Any property line: 50 [15A NCAC 02H.02190)] III. OPERATION AND MAINTENANCE REQUIREMENTS 1. The facilities shall be properly maintained and operated at all times.. The facilities shall be effectively maintained and operated as a non -discharge system to prevent the discharge of any wastewater resulting from the operation of this facility. The Permittee shall maintain an Operation and Maintenance Plan, which at a minimum shall include operational functions, maintenance schedules, safety measures and a spill response plan. [ 15A NCAC 02T .0707] 2. Upon the Water Pollution Control System Operators Certification Commission's (WPCSOCC) classification of the subject non -discharge facilities, in accordance with 15A NCAC 08G .0200 the Permittee shall designate and employ a certified operator in responsible charge (ORC) and one or more certified operator(s) as back-up ORC(s). The ORC or their back-up shall visit the facilities in accordance with 15A NCAC 08G .0200, and shall comply with all other conditions specified in the previously cited rules. [15A NCAC 02T .0117] 3. Only effluent from the Bogue Watch WWTP shall be infiltrated on the sites listed in Attachment B. [G.S. 143-215.1] W00029821 Version 2.0 Shell Version 151201 Page 3 of 8 4. An automatically activated standby power source capable of powering all essential treatment units shall be on site and operational at all times. If a generator is employed as an alternate power supply, it shall be tested weekly by interrupting the primary power source. [15A NCAC 02H .0404(g)(3)] 5. No automobiles or machinery shall be allowed on the infiltration sites except during equipment installation or while maintenance is being performed. [15A NCAC 02T .0108(b)(1)] 6. Public access to the infiltration sites and wastewater treatment facilities shall be prohibited. [15A NCAC 02T .0705(p)] The residuals generated from the wastewater treatment facilities shall be disposed or utilized in accordance with 15A NCAC 02T .1100. The Permittee shall maintain a residual management plan pursuant to 15A NCAC 02T.0708. [ 15A NCAC 02T .0708, 02T .1100] 8. Diversion or bypassing of untreated or partially treated wastewater from the treatment facilities is prohibited. [15A NCAC 02T .0705(i)] 9. Freeboard in the 113,089 cubic foot (ft) lined five-day upset storage pond, 388,634 ft3 high -rate infiltration basin, and 661,993 ft3 high -rate infiltration basin shall not be less than two feet at any time. [15A NCAC 02T .0705(c)] 10. Gauges to monitor waste levels in the 113,089 cubic foot (fit') lined five-day upset storage pond, 388,634 ft' high -rate infiltration basin, and 661,993 ft -3 higb-rate infiltration basin shall be provided. These gauges shall have readily visible permanent markings, at inch or tenth of a foot increments, indicating the following elevations: maximum liquid level at the top of the temporary liquid storage volume; minimum liquid level at the bottom of the temporary liquid storage volume; and the lowest point on top of the dam. [15A NCAC 02T .0108(b)(1)] 11. A protective vegetative cover shall be established and maintained on all earthen embankments (i.e., outside toe of embankment to maximum allowable temporary storage elevation on the inside of the embankment), berms, pipe runs, erosion control areas, and surface water diversions. Trees, shrubs, and other woody vegetation shall not be allowed to grow on the earthen dikes or embankments. Earthen embankment areas 'shall be kept mowed or otherwise controlled and accessible. [15A NCAC 02T .0108(b)(1)] 12. All effluent shall be routed to the five day upset pond should the limit for fecal coliform (e.g., daily maximum concentration of 25 colonies per 100 mL) or turbidity (e.g., instantaneous maximum of 10 NTU) be exceeded, until the problems associated with the wastewater treatment plant have been corrected. The wastewater in the five day upset pond shall be pumped back to the treatment plant headworks for re -treatment or treated in the five day upset pond prior to infiltration. [15A NCAC 02T .0108(b)(1)] 13. The infiltration basins shall be periodically cleaned to remove deposited materials that may impede the infiltration process. Cleaning records shall be maintained at the facility for a period of no less than five years, and shall be made available to the Division upon request. The Wilmington Regional Office, telephone number (910) 796-7215, shall be notified prior to each cleaning. [15A NCAC 02T .0108(b)(1)] 14. The turbidimeter shall be tested and calibrated at a minimum of once per year. Calibration records shall be maintained at the facility for a period of no less than five years, and shall be made available to the Division upon request. [15A NCAC 02T .0108(b)(1)] WO0029821 Version 2.0 Shell Version 151201 Page 4 of 8 Irv. 1. Any Division required monitoring (including groundwater, plant tissue, soil and surface water analyses) necessary to ensure groundwater and surface water protection shall be established, and an acceptable sampling reporting schedule shall be followed. [15A NCAC 02T .0108(c)] 2. A Division certified laboratory shall conduct all laboratory analyses for the required effluent, groundwater or surface water parameters. [15A NCAC 02H .0800] 3. Flow through the treatment facility shall be continuously monitored, and daily flow values shall be reported on Form NDMR. The Permittee shall install and maintain an appropriate flow measurement device to ensure the accuracy and reliability of flow measurement consistent with accepted engineering and scientific practices. Selected flow measurement devices shall be capable of measuring flows with a maximum deviation of less than ten percent from true flow; accurately calibrated at a minimum of once per year; and maintained to ensure the accuracy of measurements is consistent with the selected device's accepted capability. The Permittee shall maintain records of flow measurement device calibration on file for a period of at least five years. At a minimum, documentation shall include: a. Date of flow measurement device calibration, b. Name of person performing calibration, and c. Percent from true flow. [15A NCAC 02T .0105(k)] 4. The Permittee shall monitor the effluent from the subject facilities at the frequencies and locations for the parameters specified in Attachment A. [15A NCAC 02T .0108(c)] 5. The Permittee shall maintain adequate records tracking the amount of effluent infiltrated. At a minimum, these records shall include the following information for each infiltration site listed in Attachment B: a. Date of infiltration; b. Volume of effluent infiltrated; c. Site infiltrated; d. Loading rates to each infiltration site listed in Attachment B; and e. Weather conditions. [ 15A NCAC 02T.0 I 08(c)] 6. Freeboard (i.e., waste level to the lowest embankment elevation) in the 113,089 cubic foot (ft) lined five-day upset storage pond, 388,634 ft' high -rate infiltration basin, and 661,993 ft3 high -rate infiltration basin shall be measured to the nearest inch or tenth of a foot, and recorded weekly. Weekly freeboard records shall be maintained at the facility for a period of no less than five years, and shall be made available to the Division upon request. [15A NCAC 02T .0108(c)] Three copies of all monitoring data (as specified in Conditions IV.3. and IVA.) on Form NDMR for each PPI and three copies of all operation and disposal records (as specified in Conditions IV.5. and N.6.) on Form NDAR-2 for every site in Attachment B shall be submitted on or before the last day of the following month. If no activities occurred during the monitoring month, monitoring reports are still required documenting the absence of the activity. All information shall be submitted to the following address: [15A NCAC 02T.01 05(l)] Division of Water Resources Information Processing Unit 1617 Mail Service Center Raleigh, North Carolina 27699-1617 W00029821 Version 2.0 Shell Version 151201 Page 5 of 8 8. A record shall be maintained of all residuals removed from this facility. This record shall be maintained at the facility for a period of no less than five years, and shall be made available to the Division upon request. At a minimum, this record shall include: a. Name of the residuals hauler; b. Non -Discharge permit number authorizing the residuals disposal, or a letter from a municipality agreeing to accept the residuals; c. Date the residuals were hauled; and d. Volume of residuals removed. [15A NCAC 02T .0108(b)(1)] 9. A maintenance log shall be maintained at this facility. This log shall be maintained at the facility for a period of no less than five years, and shall be made available to the Division upon request. At a minimum, this log shall include: a. Date and results of power interruption testing on alternate power supply; b. Date of calibration of flow measurement device; c. Date of calibration of turbidimeter; d. Visual observations of the plant and plant site; and e. Record of preventative maintenance (e.g., changing of equipment, adjustments, testing, inspections and cleanings, etc.). [15A NCAC 02T .0108(b)(1)] 10. Noncompliance Notification: The Permittee shall report by telephone to the Wilmington Regional Office, telephone number (910) 796-7215, as soon as possible, but in no case more than 24 hours, or on the next working day following the occurrence or first knowledge of the occurrence of any of the following: a. Treatment of wastes abnormal in quantity or characteristic, including the known passage of a hazardous substance. b. Any process unit failure (e.g., mechanical, electrical, etc.), due to known or unknown reasons, rendering the facility incapable of adequate wastewater treatment. c. Any facility failure resulting in a by-pass directly to receiving surface waters. d. Any time self-monitoring indicates the facility has gone out of compliance with its permit limitations. e. Effluent breakout from the infiltration basins. Any emergency requiring immediate reporting (e.g., discharges to surface waters, imminent failure of a storage structure, etc.) outside normal business hours shall be reported to the Division's Emergency Response personnel at telephone number (800) 662-7956, (800) 858-0368, or (919) 733-3300. Persons reporting such occurrences by telephone shall also file a written report in letter form within five days following first knowledge of the occurrence. This report shall outline the actions taken or proposed to betaken to ensure the problem does not recur. [ISA NCAC 02T .0105(1), 02T .0108(b)(1)] WO0029821 Version 2.0 Shell Version 151201 Page 6 of 8 V. 1. The Permittee shall provide adequate inspection and maintenance to ensure proper operation of the wastewater treatment and infiltration facilities. [15A NCAC 02T .0108(b)] 2. The Permittee or their designee shall inspect the wastewater treatment and infiltration facilities to prevent malfunctions, facility deterioration and operator errors resulting in discharges, which may cause the release of wastes to the environment, a threat to human health or a public nuisance. The Permittee shall maintain an inspection log that includes, at a minimum, the date and time of inspection, observations made, and any maintenance, repairs, or corrective actions taken. The Permittee shall maintain this inspection log for a period of five years from the date of the inspection, and this log shall be made available to the Division upon request. [15A NCAC 02T .0108(b)] 3. Any duly authorized Division representative may, upon presentation of credentials, enter and inspect any property, premises or place on or related to the wastewater treatment and infiltration facilities permitted herein at any reasonable time for the purpose of determining compliance with this permit; may inspect or copy any records required to be maintained under the terms and conditions of this permit, and may collect groundwater, surface water or leachate samples. [G.S. 143-21.5.3(a)(2)] VI. GENERAL CONDITIONS 1. Failure to comply with the conditions and limitations contained herein may subject the Permittee to an enforcement action by the Division in accordance with North Carolina General Statutes 143-215.6A to 143-215.60. [G.S. 143-215.6A to 143-215.6C] 2. This permit shall become voidable if the permitted facilities are not constructed in accordance with the conditions of this permit, the Division approved plans and specifications, and other supporting documentation. [15A NCAC 02T .0110] 3. This permit is effective only with respect to the nature and volume of wastes described in the permit application, Division approved plans and specifications, and other supporting documentation. No variances to applicable rules governing the construction or operation of the permitted facilities are granted, unless specifically requested and approved in this permit pursuant to 15A NCAC 02T .0105(n). [G.S. 143-21.5.11 4. The issuance of this permit does not exempt the Permittee from complying with any and all statutes, rules, regulations, or ordinances, which may be imposed by other jurisdictional government agencies (e.g., local, state, and federal). Of particular concern to the Division are applicable river buffer rules in 15A NCAC 02B .0200; erosion and sedimentation control requirements in 15A NCAC Chapter 4 and under General Permit NCGO10000; any requirements pertaining to wetlands under 15A NCAC 02B .0200 and 02H .0500; and documentation of compliance with Article 21 Part 6 of Chapter 143 of the General Statutes. [15A NCAC 02T .0105(c)(6)] 5. In the event the permitted facilities change ownership or the Permittee changes their name, a formal permit modification request shall be submitted to the Division. This request shall be made on official Division forms, and shall include appropriate property ownership documentation and other supporting documentation as necessary. The Permittee of record shall remain fully responsible for maintaining and operating the facilities permitted herein until a permit is issued to the new owner. [15A NCAC 02T.0104] 6. The Permittee shall retain a set of Division approved plans and specifications for the life of the facilities permitted herein. [15A NCAC 02T .0108(b)(1)] 7. The Permittee shall maintain this permit until all permitted facilities herein are properly closed or permitted under another permit issued by the appropriate permitting authority. [15A NCAC 02T .01050)] W00029821 Version 2.0 Shell Version 151201 Page 7 of 8 8. This permit is subject to revocation or unilateral modification upon 60 days notice from the Division Director, in whole or part for the requirements listed in 15A NCAC 02T.01 10. [15A NCAC 02T .0110] 9. Unless the Division Director grants a variance, expansion of the permitted facilities contained herein shall not be granted if the Permittee exemplifies any of the criteria in 15A NCAC 02T .0120(b). [15A NCAC 02T.01201 10. The Permittee shall pay the annual fee within 30 days after being billed by the Division. Failure to pay the annual fee accordingly shall be cause for the Division to revoke this permit. [15A NCAC 02T .0105(e)(3)] Permit issued this the 5' day of June 2017 NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION S. 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