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HomeMy WebLinkAboutWQ0030775_Final Permit_20220502ROY COOPER Governor ELIZABETH S. BISER Secretary RICHARD E. ROGERS, JR. Director NORTH CAROLINA Environmental Quality May 2, 2022 MICHAEL A. MELTON — ENGINEERING MANAGER AQUA NORTH CAROLINA, INC. 202 MACKENAN COURT CARY, NORTH CAROLINA 27511 Subject: Permit No. WQ0030775 Avendale WWTP High -Rate Infiltration System Pender County Dear Mr. Melton: In accordance with your permit minor modification request received August 23, 2021, and subsequent additional information received December 17, 2021 and April 4, 2022, we are forwarding herewith Permit No. WQ0030775 dated May 2, 2022, to Aqua North Carolina, Inc. for the construction and operation of the modified wastewater treatment facilities, as well as the continued operation of the subject wastewater treatment and high -rate infiltration facilities. The following modifications to the subject permit are as follows: The installation of a mechanical semi -cylindrical fine screen with integrated wash press at the plant headworks. This permit shall be effective from the date of issuance through April 30, 2028, shall void Permit No. WQ0030775 issued September 9, 2021, and shall be subject to the conditions and limitations therein. The Permittee shall submit a renewal application no later than November 2, 2027. Please pay attention to the monitoring requirements listed 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. The following permit conditions are new since the last permit issuance dated September 9, 2021: ➢ Condition I.I. — This condition requires an engineering certification be submitted prior to operation of the permitted modifications. ➢ Condition L2. — This condition requires that the Permittee contact the Wilmington Regional Office at least 48 hours prior to operating the permitting modifications. ➢ Condition L3. — This condition requires a final Operation and Maintenance Plan be submitted prior to operation of modified facilities. NORTH CAROLINAD �`���` � V rhw�eM or �wim�m¢mpi 0uai� !' 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 919,707,9000 Mr. Michael A. Melton May 2, 2022 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 150B of the North Carolina General Statutes, and filed with the Office of Administrative Hearings at 6714 Mail Service Center, Raleigh, NC 27699-6714. Otherwise, this permit shall be final and binding. One set of approved plans and specifications is being forwarded to you. If you need additional information concerning this permit, please contact Lauren Raup-Plummer at (919) 707-3660 or Lauren.Plummerkncdenr.gov. Sincerely, Richard E. Rogers, Jr., Director Division of Water Resources cc: Pender County Health Department (Electronic Copy) Wilmington Regional Office, Water Quality Regional Operations Section (Electronic Copy) James W. Holland, PE — McKim & Creed (Electronic Copy) Jeff Talbot — Protection and Enforcement Branch (Electronic Copy) Laserfiche File (Electronic Copy) Digital Permit Archive (Electronic Copy) 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. Pender County FOR THE operation of a 72,000 gallon per day (GPD) wastewater treatment and high -rate infiltration facility consisting of the: construction and operation of. a mechanical semi -cylindrical fine screen with an integrated wash press located prior to the manually cleaned bar screen at the plant headworks; and all associated piping, valves, controls, and appurtenances; the continued operation of facilities from Permit No. WQ0030864: a manhole (ME-1) receiving gravity flow from the 5-day upset pond; approximately 39 linear feet (LF) of 8-inch PVC gravity sewer; an influent pump station with two 156 gallon per minute (GPM) pumps; approximately 55 LF of 4-inch ductile iron pipe (DIP); and all associated piping, valves, controls and appurtenances; and the continued operation of. a manually cleaned bar screen; a flow splitter box; three aerated flow equalization basins with a total capacity of 21,250 gallons, two 45 GPM equalization pumps, and a 58 cubic feet per minute (CFM) equalization blower; two anoxic basins with a total capacity of 21,357 gallons, and two 45 GPM anoxic mixing pumps; six aeration basins with a total capacity of 64,000 gallons, two 45 GPM recycle pumps, coarse -bubble diffusers, and two 234 CFM blowers to serve aeration and sludge digestion; four 4,050 gallon hopper -bottomed clarifiers with four 28 GPM geyser lift pumps; an aerated 14,577 gallon sludge holding tank; three 96 square foot (ft) Pyradeck fixed -media filters with three 50 GPM fixed media dewatering pumps; two ultraviolet (UV) disinfection units with two lamps per unit; a turbidimeter meter; an effluent flow meter; two 18,000 gallon field dosing tanks each with two 54 GPM dosing pumps; a 456,893 gallon synthetically -lined 5-day upset pond; a 1.32 acre high -rate spray infiltration field with a 0.65 gallon per day per square foot (GPD/ft2) loading rate; a 1.22 acre high -rate spray infiltration field with a 0.65 GPD/ft2 loading rate; and all associated piping, valves, controls, and appurtenances to serve the Avendale WWTP, with no discharge of wastes to surface waters, pursuant to the application received August 23, 2021, subsequent additional information received December 17, 2021 and April 4, 2022, and in conformity with the Division -approved plans and specifications considered a part of this permit. This permit shall be effective from the date of issuance through April 30, 2028, shall void Permit No. WQ0030775 issued September 9, 2021, and shall be subject to the following conditions and limitations: WQ0030775 Version 3.1 Shell Version 200201 Page 1 of 10 I. SCHEDULES Upon completion of construction and prior to operation of the permitted modifications, the Permittee shall submit an engineering certification from a North Carolina licensed Professional Engineer certifying that the permitted facility has been constructed in accordance with G.S. 143-215.1, Administrative Code Title 15A Subchapter 02T, this permit, and the Division -approved plans and specifications. For phased and partially certified facilities, the Permittee shall retain the responsibility to track further construction approved under this permit, and shall provide a final engineering certification upon project completion. Mail the Engineering Certification to the Division of Water Resources, Non -Discharge Branch, 1617 Mail Service Center, Raleigh, NC 27699-1617, or Non- Discharge.Reports&ncdenr.aov. [15A NCAC 02T .0116(a)] 2. The Permittee shall notify the Wilmington Regional Office, telephone number (910) 796-7215, at least two business days in advance of initial operation of the constructed facilities so that the Division can conduct a startup inspection. [15A NCAC 02T .0108(b)(1)(B)] 3. Prior to operation of the modified facilities, a Final Operation and Maintenance Plan shall be submitted for review. The plan shall be sent to the Division of Water Resources, Non -Discharge Branch, 1617 Mail Service Center, Raleigh, NC 27699-1617 or Non-Discharge.Reportskncdenr.gov. [15A NCAC 02T .0108(b)(1)(B), 02T .0707(a)] 4. The Permittee shall request renewal of this permit on Division -approved forms no later than November 2, 2027. [15A NCAC 02T .0105(b), 02T .0109] IL PERFORMANCE STANDARDS The Permittee shall maintain and operate the subject non -discharge facilities 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 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)] 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 02T .0108(b)(1)(A)] 3. Effluent quality shall not exceed the limitations specified in Attachment A. [15A NCAC 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)] High -rate infiltration sites permitted on or after December 30, 1983 have a compliance boundary that is either 250 feet from the infiltration area, or 50 feet within the property boundary, whichever is closest to the infiltration area. Any exceedance of groundwater standards at or beyond the compliance boundary shall require corrective action. Division -approved relocation of the compliance boundary shall be noted in Attachment B. Multiple contiguous properties under common ownership and permitted for use as a disposal system shall be treated as a single property with regard to determination of a compliance boundary. [15A NCAC 02L .0106(d)(2), 02L .0107(b), 02T .0105(h), G.S. 143- 215.1(1), G.S. 143-215.1(k)] 6. The review boundary is midway between the compliance boundary and the infiltration area. Any exceedance of groundwater standards at or beyond the review boundary shall require preventative action. [15A NCAC 02L .0106(d)(1), 02L .0108] WQ0030775 Version 3.1 Shell Version 200201 Page 2 of 10 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 (i.e., parcel subdivision). [ 15A NCAC 02L .0107(c)] 8. 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 Pender 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. [15A NCAC 02L .0107(f)] 10. The facilities herein were permitted per the following setbacks: a. The infiltration sites were originally permitted March 26, 2007, with an initial application date of August 31, 2006. The setbacks for infiltration sites originally permitted or modified as a reclaimed water system from June 1, 1996 to September 1, 2006 are as follows (all distances in feet): i. Surface waters classified SA: 100 ii. Surface waters classified non -SA: 25 iii. Each water supply well: 100 iv. Each non -potable well: 10 [15A NCAC 02H .0219(k)] b. The storage and treatment units, excluding the mechanical screen, were originally permitted March 26, 2007, with an initial application date of August 31, 2006. The setbacks for storage and treatment units originally permitted or modified from February 1, 1993 to September 1, 2006 are as follows (all distances in feet): i. Each habitable residence or place of assembly under separate ownership: 1001 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 2,3 vi. Nitrification field: 20 ' Habitable residences or places of assembly under separate ownership constructed after the facilities herein were originally permitted or subsequently modified 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. 3 Per setback waivers recorded in the Pender County Register of Deeds, reduced setbacks from the storage and treatment units to any property line are as follows: WQ0030775 Version 3.1 Shell Version 200201 Page 3 of 10 Parcel No. Deed Book / Page Setback Easement 3273-06-8057-0000 4761 / 1031 20 feet 30 feet 3273-06-8231-0000 4761 / 1033 20 feet 30 feet 3273-06-8315-0000 4761 / 1035 20 feet 30 feet 3273-06-8144-0000 4761 / 1037 20 feet 30 feet 3273-06-8412-0000 4761 / 1039 20 feet 30 feet 3273-06-8228-0000 4761 / 1041 20 feet 30 feet [15A NCAC 02H .02190)(5)] c. The mechanical screen was originally permitted May 2, 2022. The setbacks for storage and treatment units originally permitted or modified on or after September 1, 2018 are as follows (all distances in feet): I. Each habitable residence or place of assembly under separate ownership: 1001 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 ' Habitable residences or places of assembly under separate ownership constructed after the facilities herein were originally permitted or subsequently modified 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 02T .0706(d), 02T .0706(f), 02T .0706(g)] OPERATION AND MAINTENANCE REQUIREMENTS 1. The Permittee shall operate and maintain the subject facilities as anon -discharge system. [15A NCAC 02T .0700] 2. The Permittee shall maintain an Operation and Maintenance Plan, which shall include operational functions, maintenance schedules, safety measures, and a spill response plan. [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 their back-up shall operate and visit the facilities as required by the WPCSOCC. [15A NCAC 02T .0117] 4. The Permittee shall take measures to prevent effluent ponding in or runoff from the infiltration sites listed in Attachment B. [15A NCAC 02T .0707(c)] 5. Infiltration equipment shall be tested and calibrated once per permit cycle. [15A NCAC 02T .0707(d)] 6. Only treated effluent from the Avendale WWTP shall be infiltrated on the sites listed in Attachment B. [15A NCAC 02T .0701] 7. The Permittee shall not allow vehicles or heavy machinery on the infiltration area, except during equipment installation or maintenance activities. [15A NCAC 02T .0707(e)] WQ0030775 Version 3.1 Shell Version 200201 Page 4 of 10 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 or utilize generated residuals in a Division -approved manner. [15A NCAC 02T .0708, 02T .I 100]. 10. The Permittee shall not divert or bypass untreated or partially treated wastewater from the subject facilities. [15A NCAC 02T .0705(i)] 11. Freeboard in the 456,893 gallon synthetically -lined five day upset pond shall not be less than two feet at any time. [15A NCAC 02T .0705(c)] 12. A gauge to monitor waste levels in the 456,893 gallon synthetically -lined five day upset pond shall be provided. This gauge 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 .0707(f)] 13. A protective vegetative cover shall be established and maintained on all berms, pipe runs, erosion control areas, surface water diversions, and earthen embankments (i.e., outside toe of embankment to maximum allowable temporary storage elevation on the inside of the embankment). Trees, shrubs, and other woody vegetation shall not be allowed to grow on the earthen dikes or embankments. Earthen embankments shall be kept mowed or otherwise controlled and accessible. [ 15A NCAC 02T .0707(g)] 14. Metering equipment shall be tested and calibrated annually. [15A NCAC 02T .0707(d)] 15. 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 02T .0705(k)] 16. All effluent shall be routed to the 456,893 gallon synthetically -lined 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 456,893 gallon synthetically -lined five day upset pond shall be pumped back to the treatment plant headworks for re -treatment or treated in the 456,893 gallon synthetically -lined five day upset pond prior to infiltration. [15A NCAC 02T .0108(b)(1)] WQ0030775 Version 3.1 Shell Version 200201 Page 5 of 10 IV. MONITORING AND REPORTING REQUIREMENTS The Permittee shall conduct and report any Division required monitoring necessary to evaluate this facility's impact on groundwater and surface water. [15A NCAC 02T .0108(c)] 2. A Division -certified laboratory shall conduct all analyses for the required effluent, groundwater, and 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. Facilities with a permitted flow less than 10,000 GPD may estimate their flow from water usage records provided the water source is metered. [15A NCAC 02T .0105(k), 02T .0108(c)] 4. The Permittee shall monitor the treated effluent at the frequencies and locations for the parameters specified in Attachment A. [15A NCAC 02T .0108(c)] 5. The Permittee shall maintain records tracking the amount of effluent infiltrated. 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. Length of time site is infiltrated; e. Loading rates to each infiltration site listed in Attachment B; and f. Weather conditions. [I5A NCAC 02T .0108(c)] 6. Freeboard (i.e., waste level to the lowest embankment elevation) in the 456,893 gallon synthetically - lined five day upset pond shall be measured to the nearest inch or tenth of a foot, and recorded weekly. Weekly freeboard records shall be maintained for five years, and shall be made available to the Division upon request. [15A NCAC 02T .0108(c)] 7. 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.S. and IV.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: Division of Water Resources Information Processing Unit 1617 Mail Service Center Raleigh, North Carolina 27699-1617 [I5A NCAC 02T .0105(l)] 8. The Permittee shall maintain a record of all residuals removed from this facility. This record shall be maintained for five years, and shall be made available to the Division upon request. 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 .0708(b)] WQ0030775 Version 3.1 Shell Version 200201 Page 6 of 10 9. A maintenance log shall be kept at this facility. This log shall be maintained for five years, and shall be made available to the Division upon request. This log shall include: a. Date of flow measurement device calibration; b. Date of infiltration equipment calibration; c. Date of turbidimeter calibration; d. Date and results of power interruption testing on alternate power supply; e. Visual observations of the plant and plant site; and f Record of preventative maintenance (e.g., changing of equipment, adjustments, testing, inspections and cleanings, etc.). [15A NCAC 02T .0707(i)] 10. Noncompliance Notification: The Permittee shall report to the Wilmington Regional Office, telephone number (910) 796-7215, 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, etc.) rendering 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 telephone number (800) 662-7956, (800) 858-0368, or (919) 733-3300. All noncompliance notifications shall file a written report to the Wilmington 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)] V. INSPECTIONS 1. The Permittee shall perform inspections and maintenance to ensure proper operation of the wastewater treatment and infiltration facilities. [15A NCAC 02T .07070)] 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 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 .0707(1), 02T .07070)] Division authorized representatives may, upon presentation of credentials, enter and inspect any property, premises, or place related to the wastewater treatment and infiltration facilities permitted herein 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 groundwater, surface water, or leachate samples. [G.S. 143-215.3(a)(2)] WQ0030775 Version 3.1 Shell Version 200201 Page 7 of 10 VI. GENERAL CONDITIONS 1. Failure to comply with the conditions and limitations contained herein may subject the Permittee to a Division enforcement action. [G.S. 143-215.6A, 143-215.613, 143-215.6C] 2. This permit is effective only with respect to the nature and volume of wastes described in the permit application, and Division -approved plans and specifications. [G.S. 143-215.1(d)] 3. Unless specifically requested and approved in this permit, there are no variances to administrative codes or general statutes governing the construction or operation of the facilities permitted herein. [15A NCAC 02T .0105(n)] 4. The issuance of 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 .0105(c)(6)] 5. If the permitted facilities change ownership, or the Permittee changes their name, the Permittee shall submit a permit modification request on Division -approved forms. The Permittee shall comply with all terms and conditions of this permit until the permit is transferred to the successor -owner. [G.S. 143- 215.1(d3)] 6. The Permittee shall retain a set of Division -approved plans and specifications for the life of the facilities permitted herein. [15A NCAC 02T .0105(o)] 7. The Permittee shall maintain this permit until the proper closure of all facilities permitted herein, or until the facilities permitted herein are permitted by another authority. [15A NCAC 02T .01050)] 8. 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 Administrative Code Title 15A Subchapter 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 any records are required to be kept; ii. to have access to any permit required documents and records; iii. to inspect any monitoring equipment or method as required in this permit; or iv. to sample any pollutants; d. the Permittee's failure to pay the annual fee for administering and compliance monitoring; or e. a Division determination that the conditions of this permit are in conflict with North Carolina Administrative Code or General Statutes. [15A NCAC 02T .0110] WQ0030775 Version 3.1 Shell Version 200201 Page 8 of 10 9. Unless the Division Director grants a variance, expansion of the facilities permitted herein 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. 143-215.613, or under Federal law that would otherwise be prosecuted under G.S. 143-215.613, and all appeals of this conviction have been abandoned or exhausted. 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. c. The Permittee or any parent, subsidiary, or other affiliate of the Permittee has not paid a civil penalty, and all appeals of this penalty have been abandoned or exhausted. 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. [15A NCAC 02T .0120(b), 02T .0120(d)] 10. This permit shall not be renewed if the Permittee or any affiliation has not paid the required annual fee. [15A NCAC 02T .0120(c)] Permit issued this the 2nd day of May 2022 NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION 7Z.�z S�7;� - Richard E. Rogers, Jr., Director Division of Water Resources By Authority of the Environmental Management Commission Permit Number WQ0030775 WQ0030775 Version 3.1 Shell Version 200201 Page 9 of 10 Permit No. WQ0030775 Aqua North Carolina, Inc. Avendale WWTP ENGINEERING CERTIFICATION ❑ Partial ❑ Final High -Rate Infiltration System May 2, 2022 Pender County I, , as a duly licensed North Carolina Professional Engineer, having ❑ periodically / ❑ fully observed the construction of the permitted facilities, 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 State Zip Code Telephone Email Seal, Signature, and Date THE COMPLETED ENGINEERING CERTIFICATION, INCLUDING ALL SUPPORTING DOCUMENTATION, SHALL BE SENT TO THE FOLLOWING ADDRESS: NORTH CAROLINA DEPARTMENT OF ENVIRONMENTAL QUALITY DIVISION OF WATER RESOURCES NON -DISCHARGE BRANCH By U.S. Postal Service By Courier/Special Delivery 1617 MAIL SERVICE CENTER 512 N. SALISBURY ST. RALEIGH, NORTH CAROLINA 27699-1617 RALEIGH, NORTH CAROLINA 27604 WQ0030775 Version 3.1 Shell Version 200201 Page 10 of 10 z a A A a w � o W � � O O � N 4. 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HIGH -RATE INFILTRATION SYSTEM PENDER COUNTY W O03077S SITE AERIAL MAP Avendale,WWTP .WO0030775�7 ROZA MELD afiltration Basin cn Cd PPI 002 I a') us 5 -Day 6 11 d -D,r. cy owe-" i I I IV - ME 8 S0'I<a �g ro N 9 � r •rsv ¢Q_ ffi� N $ � 5zp�o8p w 8,.� 8 _ a NE o��s _ _ 8 aw 44 ------------ F 61a S R wN tl �C � _ glc_sescxa e� o �'ry MS g a;s e 3J wr A- �341111n qy SS.b]bdC .---' ¢3 r � x "o _ r Q m . \ • pin d In W� CINVIdn _ N � \ \ 'ahb�1�M RAI s Nc210 z zxren�a:;e:=-g j^^ssss.. g ^^aaa::�� ` a NYsmM.s�xsa2r�Y�dsaa�aapol- i`j £I=-x a g , rZWO s.^=i_.RY � btiCv3^ P8� d'^ a �.^.�3Rp �4ti832„e¢�AR9��R`��2It € " ' €,"- z 61=see^' -=jwxR' g:sr V yy�pppll�Ill z/ ' J' 6 ' :.......W........... u • 'w.w......... ' ..•...,..... ....:•............,..ww•..•.,•..----............... yia a I... 41z x3wGlS__i1.;,£�R-N 85i�YtrF�!S3X•..96j�xs'�R�a�C' g6 Lei a e6: '._.'yrv='&6".�CCBCE832 M�Y:.c&�S�C gi Wk,,.� tgCi ��i:S3Rs: gC l'"..m e:i9 - a^s^a��ry.ef�e^ .� •f-—ft I f♦ff rO- 23 26 fi � ,ry`••., i '�. !'•� FIGURE 6 AQUA NORTH CAROLINA, INC. HIGH -RATE INFILTRATION SYSTEM I J PENDER COUNTY WQ0030775 [Home use only] AVENDALECONST dgn 3/14/2008 11 05 50 AM INFILTRATION BASIN MAP