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HomeMy WebLinkAboutWQ0023634_Final Permit_20230906ROY COOPER Governor ELIZABETH S. BISER Secretary RICHARD E. ROGERS, JR. Director NORTH CAROLINA Environmental Quality September 6, 2023 DONALD IKE MCREE, JR. — COUNTY MANAGER CURRITUCK COUNTY 153 COURTHOUSE ROAD — SUITE 110 CURRITUCK, NORTH CAROLINA 27929 Subject: Permit No. WQ0023634 Waterside Villages WWTP High -Rate Infiltration System Currituck County Dear Mr. McRee, In response to your permit renewal request received on February 24, 2023, and subsequent additional information received on June 26, 2023, we are forwarding herewith Permit No. WQ0023634 dated September 6, 2023, to Currituck County for the continued operation of the subject wastewater treatment and high -rate infiltration facilities. This permit is effective from the date of issuance through November 30, 2030, shall replace Permit No. WQ0023634 issued on December 18, 2017, and is subject to the conditions and limitations therein. The Permittee shall submit a renewal application no later than June 3, 2030. Please pay attention to the monitoring requirements listed in Attachments A, B, and C for they may differ from the previous permit issuance. Failure to establish an adequate system for collecting and maintaining the required operational information may result in future non-compliance. The Division has removed the following permit conditions since the last permit issuance dated December 18, 2017: ➢ Old Condition IL3. — The Division has removed this condition. ➢ Old Condition 11.10. —The Division has removed this condition because the Permittee owns all land within the compliance boundary. ➢ Old Condition 11.11. —The Division has modified the setbacks to correspond to the applicable 15A NCAC 02H setbacks that were in effect at the time of the 2005 permitting. ➢ Old Condition VL2. — The Division has removed this condition because permits are not voidable ➢ Old Condition VL5. — The Division has replaced this condition with Condition L6. ➢ Old Condition VL 10. — The Division has removed this condition because it is in Condition VL7. D � North Carolina Department of Environmental Quality i Division of Water Resources 512 North Salisbury Street 11617 Mail Service Center I Raleigh, North Carolina 27699-1617 NORTH CAROLINA '.'roMMm 0­; /I 919,707,9000 Mr. Donald Ike McRee, Jr. September 6, 2023 Page 2 of 3 The following permit condition and attachments are new or modified since the last permit issuance dated December 18, 2017: ➢ Condition 1.1. — Within one year of the effective date of this permit, the Permittee shall remove the vegetative cover and any other deposited materials that may impede the infiltration process pursuant to 15A NCAC 02T .0707(h). ➢ Condition 12. — Prior to resuming operations of the third treatment train, the Permittee shall submit an engineering certification from a North Carolina licensed Professional Engineer. ➢ Condition L3. — Prior to operating the third treatment train, the Permittee shall notify the Washington Regional Office so the Division can conduct a startup inspection. ➢ Condition 1.4. — Within 180 days of the effective date of the permit, the Permittee shall remove all woody vegetation from and establish a protective vegetative cover on the pipe run of the groundwater lowering system. ➢ Condition L4. — This Condition replaces Old Condition VL5. ➢ Condition 11.9. — This Condition replaces Old Condition IL 11. ➢ Condition 111.1. and 11L2. — These conditions replace Old Condition 11.1. ➢ Condition 111.12. — The Permittee shall test and calibrate metering equipment annually. ➢ Condition IIL 13. — The Permittee shall provide and maintain onsite an automatically activated standby power source capable of powering all essential treatment units and test it weekly. ➢ Condition 111.14. — The Permittee shall clean the infiltration areas once per permit cycle to remove deposited materials that may impede the infiltration process and notify the regional office of cleaning events. ➢ Condition VL5.£ — Records at this facility shall include loadings for any non -hydraulic parameter specifically limited in Attachment B. Please note that there are not any non -hydraulic parameters required at the time of permitting. ➢ Condition VL8.b. and e. — The maintenance log for this facility shall include the date of infiltration equipment calibration and the date and results of power interruption testing. ➢ Condition VL9. — Unless the Division Director grants a variance, the Division shall not renew this permit if the Permittee or any affiliation has not paid an annual fee. ➢ Condition V1.10. — The Permittee shall pay an annual fee for each year of the term of this permit and continue to pay annual fees for any facility operating on an expired permit that the Division has not rescinded or revoked. ➢ Attachment A — The Division has added a new PPI to reflect the flow rate prior to the operation of the third treatment train. Mr. Donald Ike McRee, Jr. September 6, 2023 Page 3 of 3 This permit can be contested as provided in Chapter 150B of the North Carolina General Statutes by filing a Petition for a Contested Case Hearing (Petition) with the North Carolina Office of Administrative Hearings (OAH) within 30 calendar days. Requirements for filing a Petition are set forth in Chapter 150B of the North Carolina General Statutes and Title 26 of the North Carolina Administrative Code. Those interested in filing may access additional information regarding the requirements for filing a Petition and Petition forms at the OAH website or by calling the OAH Clerk's Office at (919) 431-3000. A party filing a Petition shall serve a copy of the Petition on the Department of Environmental Quality's Office of General Counsel at 1601 Mail Service Center, Raleigh, NC 27699-1601. If the party filing the Petition is not the Permittee, then the party shall also serve the Permittee pursuant to G.S. 15013-23(a). If you need additional information concerning this permit, please contact Erick Saunders at (919) 707-3659 or erickson.saunders&ncdenr.gov. Sincerely, DocuSigned by: TUVV& WO D1043082680C483... Richard E. Rogers, Jr., Director Division of Water Resources cc: Currituck County Health Department (Electronic Copy) Washington Regional Office, Water Quality Regional Operations Section (Electronic Copy) Rod Holley — Currituck County (Electronic Copy) Laserfiche File (Electronic Copy) Digital Permit Archive (Electronic Copy) THIS PAGE BLANK NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION DEPARTMENT OF ENVIRONMENTAL QUALITY RALEIGH HIGH -RATE INFILTRATION SYSTEM PERMIT Pursuant to 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 Currituck County Currituck County FOR THE operation of a 120,000 gallon per day (GPD) wastewater treatment and high -rate infiltration facility consisting of the: continued operation of a 90,000 GPD wastewater treatment system consisting of. a flow splitter box; a manually cleaned bar screen; three flow equalization tanks totaling 30,000 gallons with two 83.3 gallon per minute (GPM) pumps; eight coarse bubble aeration basins totaling 73,125 gallons (for per treatment train); four 4,162 gallon clarifiers (two per treatment train); two 10,000 gallon aerated sludge holding tanks (one per treatment train); two 108 square foot (ftz) fixed media filters (one per treatment train); a tablet chlorination for disinfection; an 8,000 gallon dosing tank with two 210 GPM pumps; a 50 kilowatt (kW) diesel standby generator with automatic transfer switch; and all associated piping, valves, controls, and appurtenances; the continued operation of a 120,000 GPD high -rate infiltration system consisting of. a 1.96 acre high -rate infiltration spray bed surrounded by a 6-inch berm; a groundwater lowering drain surrounding all sides of the application area and discharging to the Currituck Sound; and all associated piping, valves, controls, and appurtenances; and the operation of a third 30,000 GPD treatment train subsequent to an Engineering Certification consisting of. a 10,000 gallon flow equalization tank with two 83.3 GPM pumps; two coarse bubble aeration basins totaling 20,000 gallons; two 4,162 gallon clarifiers; a 10,000 gallon aerated sludge holding tank; a 108 ft2 fixed media filter; and all associated piping, valves, controls, and appurtenances to serve the Waterside Villages WWTP, with no discharge of wastes to surface waters, pursuant to the application received on February 24, 2023, subsequent additional information received on June 26, 2023, and in conformity with the Division -approved plans and specifications considered a part of this permit. This permit is effective from the date of issuance through November 30, 2030, shall replace Permit No. WQ0023634 issued on December 18, 2017, and is subject to the following conditions and limitations: WQ0023634 Version 4.0 Shell Version 230515 Page 1 of 10 I. SCHEDULES 1. Within one year of the effective date of this permit, the Permittee shall remove the vegetative cover and any other deposited materials that may impede the infiltration process pursuant to 15A NCAC 02T .0707 h and Condition III.14. The Permittee shall notify the Washington Regional Office, telephone number (252) 946-6481, within two business days following the completion of this work. [ 15A NCAC 02T .0 1 08(b)(1)(B), 02T .0707(h)] 2. Prior to operation of the third treatment train, the Permittee shall submit an engineering certification from a North Carolina licensed Professional Engineer certifying that the facilities have been constructed pursuant to G.S. 143-215.1, Administrative Code Title 15A Subchapter 02T, this permit, and the Division -approved plans and specifications. The Permittee shall submit the Engineering Certification via the Non -Discharge online portal_ [15A NCAC 02T .0108(b)(1)(B), 02T .0116(a)]. 3. The Permittee shall notify the Washington Regional Office, telephone number (252) 946-6481, at least two business days in advance of the initial operation of the third treatment train so that the Division can conduct a startup inspection. [15A NCAC 02T .0108(b)(1)(A)] 4. Within 180 days of the effective date of this permit, the Permittee shall remove all woody vegetation from and establish a protective vegetative cover on the pipe run of the groundwater lowering system in accordance with Condition III.11. The Permittee shall notify the Washington Regional Office, telephone number (252) 946-6481, within two business days following the completion of this work. [15A NCAC 02T .0 1 08(b)(1)(B), 02T .0707(g)1 5. If the permitted facilities change ownership or the Permittee changes its name, the Permittee shall submit a permit modification request on Division -approved forms within 90 days of the change of ownership. The Permittee shall comply with all terms and conditions of this permit until the Division transfers the permit to the successor -owner. [G.S. 143-215.1(d3)1 6. The Permittee shall request renewal of this permit on Division -approved forms no later than June 3, 2030. [15A NCAC 02T .0105(b), 02T .01091 II. PERFORMANCE STANDARDS The Permittee shall operate and maintain the subject wastewater treatment and high -rate infiltration facilities so there is no discharge to surface waters, nor any contravention of groundwater or surface water standards. In the event the facilities do not perform as designed, including the creation of nuisance conditions due to improper operation and maintenance, or failure of the infiltration areas to 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 disposal facilities. [15A NCAC 02T .0108(b)(1)(A)1 2. This permit shall not relieve the Permittee of its responsibility for contravention of groundwater or surface water standards resulting from the operation of this facility. [15A NCAC 02T .0108(b)(1)(A)] 3. Effluent quality shall not exceed the limitations specified in Attachment A. [15A NCAC 02T .0108(b)(1)(A)1 4. The Permittee shall not infiltrate effluent in exceedance of the hydraulic specified in Attachment B. [15A NCAC 02T .0 1 08(b)(1)(A)] WQ0023634 Version 4.0 Shell Version 230515 Page 2 of 10 For high -rate infiltration sites originally permitted on or after December 30, 1983, the Division has established the compliance boundary 250 feet from the infiltration area boundary or 50 feet within the property boundary, whichever is closest to the infiltration area boundary. Any exceedance of groundwater standards at or beyond the compliance boundary shall require the Permittee to take corrective action. The Division shall note any Division -approved relocation of the compliance boundary in Attachment B. The Division shall consider multiple contiguous properties under common ownership and permitted for use as a disposal system as a single property regarding the determination of a compliance boundary. [15A NCAC 02L .0106(e), 02L .0107(b), 02L .0107(c), 02L .0107(fl, 02T .0105 h 6. The Division has established the review boundary midway between the compliance boundary and the infiltration area boundary. Any exceedance of groundwater standards at or beyond the review boundary shall require the Permittee to take preventative action. [ 15A NCAC 02L .0106(d), 02L .01081 7. The Permittee shall notify the Division of any sale or transfer of property affecting a compliance boundary (i.e., parcel subdivision). [15A NCAC 02L .0107(1)] 8. The Permittee or any landowner who owns land within the compliance boundary shall not construct any water supply wells within the compliance boundary. [15A NCAC 02L .0107(i)1 9. The Permittee shall operate and maintain the permitted facilities pursuant to the following setbacks: a. The Division permitted modifications to the infiltration sites on December 29, 2005, with an application received on July 7, 2005. The setbacks for high -rate infiltration sites originally permitted or modified with an application received from February 1, 1993, through August 31, 2006, are as follows (all distances in feet): i. Each private or public water supply source: 100 ii. Surface waters: 200 In. Groundwater lowering ditches: 200 1 iv. Surface water diversions (upslope): 200 v. Surface water diversions (downslope): 200 vi. Each well with exception of monitoring wells: 100 vii. Each property line: 50 Z viii. Top of slope of embankments or cuts of two feet or more in vertical height: 100 ix. Each water line: 10 x. Each swimming pool: 100 xi. Public right of way: 50 xii. Nitrification field: 20 xiii. Each building foundation or basement: 15 ' Except for the groundwater lowering device approximately 40 feet from the infiltration site. 2 Setbacks to property lines are not applicable when the Permittee, or the entity from which the Permittee is leasing, owns both parcels separated by the property line. [ 15A NCAC 02H .0219(i)(5)] WQ0023634 Version 4.0 Shell Version 230515 Page 3 of 10 b. The Division permitted modifications to the treatment and storage units on December 29, 2005, with an application received on July 7, 2005. The setbacks for treatment and storage units originally permitted or modified with an application received from February 1, 1993, through August 31, 2006, are as follows (all distances in feet): I. Each habitable residence or place of assembly under separate ownership: 100, ii. Each private or public water supply source: 100 iii. Surface waters: 50 iv. Each well with exception of monitoring wells: 100 v. Each property line: 50 2 vi. Nitrification field: 20 Habitable residences or places of assembly under separate ownership constructed after the Division originally permitted or subsequently modified the facilities are exempt from this setback. 2 Setbacks to property lines are not applicable when the Permittee, or the entity from which the Permittee is leasing, owns both parcels separated by the property line. [ 15A NCAC 02H .0219(j)(5)] III. OPERATION AND MAINTENANCE 1. The Permittee shall operate and maintain the subject facilities as anon -discharge system. [15A NCAC 02T .0101] 2. The Permittee shall maintain an Operation and Maintenance Plan, which shall include: a. A description of the operation of the system in sufficient detail to show what operations are necessary for the system to function and who shall conduct the operations. b. A description of the anticipated maintenance of the system. c. Provisions for safety measures, including restriction of access to the site and equipment. d. Spill control provisions that include response to upsets and bypasses, including control, containment, and remediation; and contact information for personnel, emergency responders, and regulatory agencies. [ 15A NCAC 02T .0707(a)] 3. Upon the Water Pollution Control System Operators Certification Commission's (WPCSOCC) classification of the subject non -discharge facilities, the Permittee shall designate and employ a certified Operator in Responsible Charge (ORC), and one or more certified operators as Back-up ORCs. The ORC or its Back-up shall operate and visit the facilities as required pursuant to 15A NCAC 08G .0204 and 08G .0205. [15A NCAC 02T .01171 4. The Permittee shall take measures to prevent effluent ponding in or runoff from the infiltration area. The Permittee shall maintain a six-inch berm around the high -rate spray infiltration site and it shall be outside the wetted area and as close as possible to the perimeter fence. [15A NCAC 02T .0707(c)1 5. The Permittee shall test and calibrate the infiltration equipment once per permit cycle. [ 15A NCAC 02T .0707(d)] 6. The Permittee shall only infiltrate treated effluent from the Waterside Villages WWTP onto the sites listed in Attachment B. [15A NCAC 02T .07011 WQ0023634 Version 4.0 Shell Version 230515 Page 4 of 10 7. The Permittee shall not allow vehicles or heavy machinery on the infiltration area, except during equipment installation or maintenance activities. The Permittee shall take caution to protect the integrity of the infiltrative area. [ 15A NCAC 02T .0707(e)] 8. The Permittee shall prohibit public access to the wastewater treatment, storage, and infiltration facilities. [15A NCAC 02T .0705(p) 9. The Permittee shall dispose of or utilize generated residuals in a Division -approved manner. [15A NCAC 02T .0708, 02T .1101]. 10. The Permittee shall not divert or bypass untreated or partially treated wastewater from the subject facilities. [15A NCAC 02T .0705(i)] 11. The Permittee shall establish and maintain a protective vegetative cover on all berms, pipe runs, erosion control areas, surface water diversions, and earthen embankments (i.e., the outside toe of the embankment to the maximum allowable temporary storage elevation on the inside of the embankment). The Permittee shall remove all trees, shrubs, and other woody vegetation from earthen dikes and embankments. The Permittee shall keep all earthen embankments mowed or otherwise controlled and accessible. [ 15A NCAC 02T .0707(g)1 12. The Permittee shall test and calibrate metering equipment annually. [15A NCAC 02T .0707(d)] 13. The Permittee shall provide and maintain onsite an automatically activated standby power source capable of powering all essential treatment units. If the Permittee employs a generator as an alternate power supply, the Permittee shall test it weekly. [15A NCAC 02T .0705(k)] 14. The Permittee shall clean the infiltration areas once per permit cycle to remove deposited materials that may impede the infiltration process. The Permittee shall maintain cleaning records at the facility for eight years and shall make them available to the Division upon request. Prior to each cleaning, the Permittee shall notify the Washington Regional Office, telephone number (252) 946-6481. [15A NCAC 02T .0707(h)] IV. MONITORING AND REPORTING 1. The Permittee shall conduct and report any Division -required monitoring, including the monitoring of groundwater, surface water or wetlands, waste, wastewater, residuals, soil, treatment processes, lagoon or storage ponds, and plant tissue, if necessary to evaluate this facility's impact on groundwater and surface water. [ 15A NCAC 02T .0108(c)1 2. A Division -certified laboratory shall conduct all analyses for the required parameters specified in Attachments A and C. Parameters measured on -site with in -line metering equipment are exempt from a Division -certified laboratory analysis. [15A NCAC 02H .0805] The Permittee shall continuously monitor flow through the treatment facility and report daily flow values on Form NDMR. Facilities with a permitted flow of less than 10,000 GPD may estimate its flow from water usage records provided the water source has a metering device. [15A NCAC 02T .0105 k , 02T .0108(c)1 4. The Permittee shall monitor the treated effluent at the frequencies and locations for the parameters specified in Attachment A. [ 15A NCAC 02T .0105(k), 02T .0108(c)] WQ0023634 Version 4.0 Shell Version 230515 Page 5 of 10 5. The Permittee shall maintain records tracking the amount of effluent infiltrated, which 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. Length of site infiltration time. e. Continuous weekly, monthly, and year-to-date hydraulic (inches/acre) loadings. f Continuous monthly and year-to-date loadings for any non -hydraulic parameter specifically limited in Attachment B. g. Weather conditions. [ 15A NCAC 02T .0108(c)] 6. On or before the last day of the month following the previous month's sampling, the Permittee shall submit monitoring data (as specified in Conditions IV.3 and IVA) on Form NDMR for each PPI and operation and disposal records (as specified in Condition IV.S) on Form NDAR-2 for every site in Attachment B). If no activities occurred during the monitoring month, the Permittee shall still submit monitoring reports documenting the absence of the activity. The Permittee shall submit the reports via the Non -Discharge monitoring report portal. [15A NCAC 02T .0105(1)] 7. The Permittee shall maintain records of all residuals removed from this facility. The Permittee shall maintain these records for eight years and shall make them available to the Division upon request. These records 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. Residuals hauling date. d. Volume of residuals removed. [ 15A NCAC 02T .0708(b)] 8. The Permittee shall keep a log of all maintenance done at this facility. The Permittee shall maintain this log for eight years and shall make it available to the Division upon request. This log shall include: a. Date of flow measurement device calibration. b. Date of infiltration equipment calibration. c. Visual observations of the plant and plant site. d. Record of preventative maintenance (e.g., changing of equipment, adjustments, testing, inspections, cleanings, etc.). e. Date and results of the alternate power supply testing. [ 15A NCAC 02T .0707(i)] 9. The Permittee shall sample monitoring wells MW-10, MW-11, MW-12, MW-13, and MW-14 at the frequencies and for the parameters specified in Attachment C. [ 15A NCAC 02T .0105(m)] 10. On or before the last day of the month following the previous month's sampling, the Permittee shall submit a Compliance Monitoring Form (GW-59) and its associated laboratory analyses for each monitoring well in Attachment C. The Permittee shall submit the Compliance Monitoring Forms via the Non -Discharge monitoring report portal. [15A NCAC 02T .0105(m)] WQ0023634 Version 4.0 Shell Version 230515 Page 6 of 10 11. Noncompliance Notification: The Permittee shall report to the Washington Regional Office, telephone number (252) 946-6481, within 24 hours of first knowledge 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, structural, etc.) that makes the facility incapable of adequate wastewater treatment. c. Any facility failure resulting in a discharge to surface waters. d. Any time self -monitoring indicates the facility has gone out of compliance with its permit limitations. e. Ponding in or runoff from the infiltration sites. Emergencies requiring reporting outside normal business hours shall call the Division's Emergency Response personnel at the telephone number (800) 858-0368. All noncompliance notifications shall file a written report to the Washington Regional Office within five days of first knowledge of the occurrence, and this report shall outline the actions proposed or taken to ensure the problem does not recur. [15A NCAC 02T .0108(b)(1)(A)1 V. INSPECTIONS 1. The Permittee shall perform inspections and maintenance to ensure proper operation of the wastewater treatment and infiltration facilities. [15A NCAC 02T .0707(i)] 2. The Permittee shall inspect the wastewater treatment and infiltration facilities to prevent malfunctions, facility deterioration, and operator errors that may result in discharges of wastes to the environment, threats to human health, or public nuisances. The Permittee shall maintain an inspection log that includes the date and time of inspection, observations made, and maintenance, repairs, or corrective actions taken. The Permittee shall maintain this inspection log for eight years from the date of the inspection and shall make this log available to the Division upon request. [15A NCAC 02T .0707(i), 02T .0707(j)1 Division -authorized representatives may, upon presentation of credentials, enter and inspect any property, premises, or place related to the permitted wastewater treatment and infiltration facilities at any reasonable time for determining compliance with this permit. Division -authorized representatives may inspect or copy records maintained under the terms and conditions of this permit and may collect influent, treatment process water, effluent, residual, soil, plant tissue, groundwater, or surface water samples. [G.S. 143-215.3(a)(2)1 WQ0023634 Version 4.0 Shell Version 230515 Page 7 of 10 Vl. GENERAL 1. The Permittee's failure to comply with this permit's conditions and limitations may subject the Permittee to a Division enforcement action. [G.S. 143-215.6A, 143-215.6B, 143-215.6C] 2. This permit is effective only for the nature and volume of wastes described in the permit application and Division -approved plans and specifications. [G.S. 143-215.1(d)1 3. There are no variances to administrative codes or general statutes governing the construction or operation of the permitted facilities unless the Permittee specifically requested a variance in the application and the Division approved the variance as noted in this permit's facility description. [15A NCAC 02T .0105(b)] 4. This permit does not exempt the Permittee from complying with all statutes, rules, regulations, or ordinances that other jurisdictional government agencies (e.g., local, state, and federal) may require. [15A NCAC 02T .0 1 08(b)(1)(A)] 5. The Permittee shall retain this permit and the Division -approved plans and specifications for the life of the permitted facilities. [15A NCAC 02T .0105(o), 02T .0116(d)] 6. The Permittee shall comply with all permit conditions and requirements until the proper closure of the permitted facilities, or until another appropriate authority permits the facilities. [15A NCAC 02T .0105 ] 7. This permit is subject to revocation or modification upon 60-day notice from the Division Director in whole or part for: a. Violation of any terms or conditions of this permit or 15A NCAC 02T. b. Obtaining a permit by misrepresentation or failure to disclose all relevant facts. c. The Permittee's refusal to allow authorized Department employees upon presentation of credentials: I. To enter the Permittee's premises where a system is located or where the Permittee keeps any Division -required records under the terms and conditions of this permit. ii. To have access to any permit -required documents and records. iii. To inspect any monitoring equipment or method as required in this permit. iv. To sample any pollutants. d. The Permittee's failure to pay the annual fee for administering and compliance monitoring. e. A Division determination that the conditions of this permit conflict with the North Carolina Administrative Code or General Statutes. [ 15A NCAC 02T .01101 WQ0023634 Version 4.0 Shell Version 230515 Page 8 of 10 8. Unless the Division determines that the Permittee needs a permit modification for the construction of facilities to resolve non-compliance with any environmental statute or rule, or the Division Director grants a variance, expansion of the permitted facilities shall not occur if any of the following apply: a. The Permittee or any parent, subsidiary, or other affiliate of the Permittee has been convicted of environmental crimes under G.S. 143-215.6B or under Federal law that would otherwise be prosecuted under G.S. 143-215.6B, and the Permittee or any parent, subsidiary, or other affiliate of the Permittee has abandoned or exhausted all appeals of this conviction. b. The Permittee or any parent, subsidiary, or other affiliate of the Permittee has previously abandoned a wastewater treatment facility without properly closing the facility in accordance with its permit or 15A NCAC 02T. c. The Permittee or any parent, subsidiary, or other affiliate of the Permittee has not paid a civil penalty, and the Permittee or any parent, subsidiary, or other affiliate of the Permittee has abandoned or exhausted all appeals of this penalty. d. The Permittee or any parent, subsidiary, or other affiliate of the Permittee is currently not compliant with any compliance schedule in a permit, settlement agreement, or order. e. The Permittee or any parent, subsidiary, or other affiliate of the Permittee has not paid an annual fee pursuant to 15A NCAC 02T .0105(e)(2). [ 15A NCAC 02T .0120(b), 02T .0120(d)] 9. Unless the Division Director grants a variance, the Division shall not renew this permit if the Permittee or any affiliation has not paid an annual fee pursuant to 15A NCAC 02T .0I05(e)(2). [15A NCAC 02T .0120 c , 02T .0120(d)] 10. The Permittee shall pay an annual fee for each year of the term of this permit pursuant to the schedule in G.S. 143-215.31)(a). The Permittee shall continue to pay annual fees for any facility operating on an expired permit that the Division has not rescinded or revoked. [ 15A NCAC 02T .0105(e)(2)] Permit issued this the 6' day of September 2023 NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION DocuSigned by: v"W� D1043082080C483... Richard E. Rogers, Jr., Director Division of Water Resources By Authority of the Environmental Management Commission Permit Number WQ0023634 WQ0023634 Version 4.0 Shell Version 230515 Page 9 of 10 Permit No. WQ0023634 Currituck County Waterside Villages WWTP ENGINEERING CERTIFICATION ❑ Partial ❑ Final High -Rate Infiltration System September 6, 2023 Currituck County I, , as a duly licensed North Carolina Professional Engineer, having ❑ periodically / ❑ fully observed the reconnection of the third treatment train, do hereby state to the best of my abilities that the facility was constructed in compliance with G.S. 143-215.1, Administrative Code Title 15A Subchapter 02T, this permit, and the Division -approved plans and specifications. Documentation of any variation to this permit, and the Division -approved plans and specifications, is in the attached as -built drawings. Description of variations: Professional Engineer's Name Firm Name Firm No. Address City StaME& Zip Code Telephone ANELEmail Seal, Signature, and Date THE PERMITTEE SHALL SUBMIT THE COMPLETED ENGINEERING CERTIFICATION, INCLUDING ALL SUPPORTING DOCUMENTATION, VIA THE NON -DISCHARGE ONLINE PORTAL. WQ0023634 Version 4.0 Shell Version 230515 Page 10 of 10 ATTACHMENT A — LIMITATIONS AND MONITORING REQUIREMENTS Currituck County PPI 001— WWTP Effluent (Without Third Treatment Train) r Certification Date: September 6, 2023 Permit Number: WQ0023634 Version: 4.0 EFFLUENT CHARACTERISTICS EFFLUENT LIMITS MONITORING REQUIREMENTS PCS Code Parameter Description Units of Measure Monthly Monthly Average Geometric Mean Daily Minimum Daily Maximum Measurement Frequency Sample Type 00310 BOD, 5-Day (20 °C) mg/L 10 Monthly Composite 00940 Chloride (as Cl) mg/L 3 x Year 2 Composite 50060 Chlorine, Total Residual mg/L 5 x Week Grab 31616 Coliform, Fecal MF, M-FC Broth, 44.5 °C #/100 mL 14 43 Monthly Grab 50050 Flow, in Conduit or thru Treatment Plant GPD 90,000 Continuous Recorder 00610 Nitrogen, Ammonia Total (as N) mg/L 4 Monthly Composite 00625 Nitrogen, Kjeldahl, Total (as N) mg/L Monthly Composite 00620 Nitrogen, Nitrate Total (as N) mg/L Monthly Composite 00600 Nitrogen, Total (as N) mg/L 10 Monthly Composite 00400 pH su 5 x Week Grab 00665 Phosphorus, Total (as P) mg/L Monthly Composite 70300 Solids, Total Dissolved — 180 °C mg/L 3 x Year 2 Composite 00530 Solids, Total Suspended mg/L 20 Monthly Composite 1. This PPI shall be active until the Division has received an Engineering Certification for the third treatment train pursuant to Condition I.2. 2. The Permittee shall conduct 3 x Year sampling in May, August, and December. WQ0023634 Version 4.0 Attachment A Page 1 of 3 ATTACHMENT A — LIMITATIONS AND MONITORING REQUIREMENTS Currituck County PPI 002 — WWTP Effluent (Including Third Treatment Train)' Certification Date: September 6, 2023 Permit Number: WQ0023634 Version: 4.0 EFFLUENT CHARACTERISTICS EFFLUENT LIMITS MONITORING REQUIREMENTS PCS Code Parameter Description Units of Measure Monthly Monthly Average Geometric Mean Daily Minimum Daily Maximum Measurement Frequency Sample Type 00310 BOD, 5-Day (20 °C) mg/L 10 2 x Month Composite 00940 Chloride (as Cl) mg/L 3 x Year' Composite 50060 Chlorine, Total Residual mg/L 5 x Week Grab 31616 Coliform, Fecal MF, M-FC Broth, 44.5 °C #/100 mL 14 43 2 x Month Grab 50050 Flow, in Conduit or thru Treatment Plant GPD 120,000 Continuous Recorder 00610 Nitrogen, Ammonia Total (as N) mg/L 4 2 x Month Composite 00625 Nitrogen, Kjeldahl, Total (as N) mg/L 2 x Month Composite 00620 Nitrogen, Nitrate Total (as N) mg/L 2 x Month Composite 00600 Nitrogen, Total (as N) mg/L 10 2 x Month Composite 00400 pH su 5 x Week Grab 00665 Phosphorus, Total (as P) mg/L 2 x Month Composite 70300 Solids, Total Dissolved — 180 °C mg/L 3 x Year 1 Composite 00530 Solids, Total Suspended mg/L 20 2 x Month Composite 1. This PPI shall not be active until the Division has received the Engineering Certification for the third treatment train pursuant to Condition I.2. 2. The Permittee shall conduct 3 x Year sampling in May, August, and December. WQ0023634 Version 4.0 Attachment A Page 2 of 3 ATTACHMENT A — LIMITATIONS AND MONITORING REQUIREMENTS Currituck County PPI 003 — Groundwater Lowering System Effluent Certification Date: September 6, 2023 Permit Number: WQ0023634 Version: 4.0 EFFLUENT CHARACTERISTICS EFFLUENT LIMITS MONITORING REQUIREMENTS PCS Code Parameter Description Units of Measure Monthly Average Monthly Geometric Mean Daily Minimum Daily Maximum Measurement Frequency Sample Type 31616 Coliform, Fecal MF, M-FC Broth, 44.5 °C #/100 mL Monthly Grab 01045 Iron, Total (as Fe) mg/L 3 x Year' Grab 01055 Manganese, Total (as Mn) mg/L 3 x Year' Grab 00610 Nitrogen, Ammonia Total (as N) mg/L 3 x Year' Grab 00620 Nitrogen, Nitrate Total (as N) mg/L 3 x Year' Grab 00600 Nitrogen, Total (as N) mg/L 3 x Year' Grab 00400 pH su Monthly Grab 00665 Phosphorus, Total (as P) mg/L 3 x Year 1 Grab 1. The Permittee shall conduct 3 x Year sampling in May, August, and December. NOTE: See Figure 2 for location of the groundwater lowering system effluent. The Permittee has provided a wastewater system easement for this facility, which is recorded in the Currituck County Register of Deeds (Deed / Book: 1198 / 243). WQ0023634 Version 4.0 Attachment A Page 3 of 3 THIS PAGE BLANK ATTACHMENT B — APPROVED LAND APPLICATION SITES AND LIMITATIONS Currituck County Certification Date: September 6, 2023 Permit Number: WQ0023634 Version: 4.0 INFILTRATION AREA INFORMATION APPLICATION LIMITATIONS Site Owner Parcel No. County Latitude Longitude Net Acreage Dominant Parameter Soil Series Rate Units 1 Currituck County 9921-27-9740 Currituck 36.231139'-75.870688' 1.96 1 Conetoe 01284 — Non -Discharge Application Rate 1.40 GPD/ft2 Total: 11.96 WQ0023634 Version 4.0 Attachment B Page 1 of 1 THIS PAGE BLANK ATTACHMENT C — GROUNDWATER MONITORING AND LIMITATIONS Currituck County Monitoring Wells: MW-10, MW-11, MW-12, MW-13, and MW-14 Certification Date: September 6, 2023 Permit Number: WQ0023634 Version: 4.0 GROUNDWATER CHARACTERISTICS GROUNDWATER STANDARDS MONITORING REQUIREMENTS PCS Code Parameter Description Daily Maximum Frequency Measurement Sample Type Footnotes 00680 Carbon, Total Organic (TOC) mg/L 3 x Year Grab 1,6 00940 Chloride (as Cl) 250 mg/L 3 x Year Grab 1 31616 Coliform, Fecal MF, M-FC Broth, 44.5 °C #/100 mL 3 x Year Grab 1 00610 Nitrogen, Ammonia Total (as N) 1.5 mg/L 3 x Year Grab 1 00620 Nitrogen, Nitrate Total (as N) 10 mg/L 3 x Year Grab 1 00400 pH 6.5-8.5 su 3 x Year Grab 1,2 00665 Phosphorus, Total (as P) mg/L 3 x Year Grab 1 70300 Solids, Total Dissolved - 180 °C 500 mg/L 3 x Year Grab 1 GWVOC Volatile Compounds (GW) Present: Yes/No Annually Grab 1, 4, 5 82546 Water Level, Distance from measuring point feet 3 x Year Calculated 1, 2, 3 1. The Permittee shall conduct 3 x Year monitoring in March, July, and November, and Annual monitoring in November. 2. The Permittee shall measure the water levels prior to purging the wells. The Permittee shall measure the depth to water in each well from the surveyed point on the top of the casing. The Permittee shall measure pH after purging and prior to sampling for the remaining parameters. 3. The Permittee shall survey the measuring points (top of well casing) of all monitoring wells to provide the relative elevation of the measuring point for each monitoring well. The Permittee shall survey the measuring points (top of casing) of all monitoring wells relative to a common datum. 4. Volatile Organic Compounds (VOC) — Analyze by one or more of the following methods: a. Standard Method 6200 B-2011, PQL at 0.5 �ug/L or less b. Standard Method 6200 C-2011, PQL at 0.5 �ug/L or less c. SW-846 Method 8021 B, Low Concentration, PQL at 0.5 gg/L or less d. SW-846 Method 8260 D, Low Concentration, PQL at 0.5 gg/L or less e. Another method with prior approval by the Water Quality Permitting Section Chief Any method used shall meet the following qualifications: a. A Division -certified laboratory shall run any method used. b. The method used shall include all the constituents listed in Table 6200:I of Standard Methods. c. The method used shall provide a PQL of 0.5 �ug/L or less supported by laboratory proficiency studies as required by the Division's Laboratory Certification Branch. A Division -certified laboratory shall qualify (estimate) and report any constituents detected above the MDL but below the PQL of 0.5 gg/L. 5. If monitoring detects any volatile organic compounds (VOC), then the Permittee shall immediately contact the Washington Regional Office supervisor, telephone number (252) 946-6481, for further instructions regarding any additional follow-up analyses required. WQ0023634 Version 4.0 Attachment C Page 1 of 2 ATTACHMENT C — GROUNDWATER MONITORING AND LIMITATIONS Certification Date: September 6, 2023 Currituck County Permit Number: WQ0023634 Version: 4.0 6. If monitoring detects TOC concentrations greater than 10 mg/L in any downgradient monitoring well, the Permittee shall conduct additional sampling and analysis to identify the individual constituents comprising this TOC concentration. If the TOC concentration as measured in the background monitor well exceeds 10 mg/L, this concentration shall represent the naturally occurring TOC concentration. Any exceedances of this naturally occurring TOC concentration in the downgradient wells are subject to additional sampling and analysis as described above. 7. The Permittee shall report monitoring well data on Compliance Monitoring Forms (GW-59s) consistent with the nomenclature and location information provided in this attachment. WQ0023634 Version 4.0 Attachment C Page 2 of 2 t ' I ;Legend ;Cm) Monitoring Wells ►0 SprayBeds ' Spray Bed P M.W-13 rr 3 (MW-14 Treatmen' 'Facility y f r' Spray Bed MW-11 f` MW-10 oo/�gle�Earth ,r 400ft FigureWQ0023634 J - • - r' x'^ . 'Am or League Mowing ViflasA't' Waterside A I i -aterside VillagesIF y /* a ?enience ArAe Treatment/Facility -Goagle./Ear 'ti 7J ,y� 900 ft