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HomeMy WebLinkAboutWQ0022870_Final Permit_20081023Michael F. Easley, Governor DU)a October 23, 2009 Thomas Roberts - President Aqua North Carolina 202 Mackenan CT. Cary, North Carolina 27511 Dear Mr. Roberts: William G. Ross Jr., Secretary North Carolina Department of Environment and Natural Resources Coleen H. Sullins Director Division of Water Quality SCANNED DATE: Z f `1 1 S Subject: Permit No, WQ0022870 Buck Mountain Service Area Non -Conjunctive Wastewater Treatment and Reclaimed Water Utilization System Chatham County In accordance with your permit renewal request received September 9, 2008, we are forwarding herewith Permit No. WQ0022870, dated October 23, 2008, 2008, to Aqua North Carolina for the continued operation of the subject wastewater treatment and reclaimed water utilization facilities. An Engineer's Certification for the completion of construction of the disposal area expansion has not been received; therefore, permit conditions from Permit No. WQ0023693 issued April 26, 2006 for the construction and operation of the disposal area expansion are hereby included in this permit. This permit shall be effective from the date of issuance until September 30, 2013, shall void Permit No. WQ0023693 issued April 26, 2006, and shall be subject to the conditions and limitations as specified therein. Please pay particular attention to the monitoring requirements in this permit. Failure to establish an adequate system for collecting and maintaining the required operational information will result in future compliance problems. Please note that effluent sampling parameters and frequencies have been changed (Attachment A). If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to request an adjudicatory hearing upon written request within 30 days following receipt of this permit. This request must 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, 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 matter, please contact Matthew Fleahman at (919) 715-6173 or matthew.fleahman@ncmail.net. Sincerely, for Coleen H. Sullins 11orthCam ina Aaturally Aquifer Protection Section 1636 Mail Service Center Raleigh, NC 27699-1636 Telephone : (919) 733-3221 lntemet: www.newaterquality.org Location: 2728 Capital Boulevard Raleigh, NC 27604 Fax 1: (919) 715-0598 Fax 2: (919) 715-6048 An Equal Opportunity/Affirmative Action Employer— 50% Recycledl10%Post Consumer Paper Customer Service: (877) 623-6748 cc: Chatham County Health Department Raleigh Regional Office, Aquifer Protection Section Technical Assistance and Certification Unit (with rating sheet attached) APS Central Files LAU Files NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES RALEIGH NON -CONJUNCTIVE WASTEWATER TREATMENT AND RECLAIMED WATER UTILIZATION 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 Chatham County FOR THE operation of a 500,000 gallon per day (GPD) wastewater treatment and reclaimed water utilization system consisting of the: construction and operation of approximately 216 acres divided into 149 acres of primary low spray areas (PLEA), 50 acres of primary high spray areas (PHSA) and 17 acres of secondary spray areas (SSA); the continued operation of one (1) 2,860,825 gallon clay -lined upset pond to provide a minimum of five (5) days of upset storage, one (1) upset pond pump station with two (2) 200 GPM pumps, one (1) 42,839,747 gallon clay -lined irrigation storage pond to provide a minimum of 92 days of storage, one (1) 16 foot by 7.6 foot by 8 foot irrigation pump tank with three (3) 600 GPM pumps and spray irrigation of wastewater on approximately 212 acres on common areas and golf course areas pursuant to an Effluent Easement and Irrigation Agreement between the Permittee and Jordan Lake Preserve Corporation, and the continued operation of a 500,000 gallon per day (GPD) wastewater treatment system consisting of one (1) 165,900 gallon equalization basin with a 15 horsepower (HP) aerator, a manually cleaned bar screen, a flow splitter box, two (2) 370,200 gallon aeration basins with two (2) 15 HP aerators in each basin., two (2) 63,000 gallon clarifiers each with two (2) air lift pumps, one (1) 130,800 sludge holding basin with two (2) 10 HP aerators and a variable water level air lift pump, four (4) 100 square foot (fC) tertiary filters, one (1) 32,600 gallon clear -well with four (4) 750 gallon per minute (GPM) pumps, one (1) 38,200 gallon mudwell with two (2) 200 GPM pumps, one (1) 25,100 gallon chlorine contact chamber with two (2) variable speed pumps, two (2) UV disinfections systems with 20 lamps each (rated for 500,000 GPD), one (1) 23,800 gallon dechlorination chamber, an ultrasonic effluent flow measuring device, an effluent composite sampler, continuous effluent turbidity monitoring and recording, and a permanent standby generator with automatic transfer switch capable of powering all essential wastewater treatment units to serve approximately 1,900 residences (with a presumed average flow of 250 GPD per residence) and amenities in the Buck Mountain Service Area, which includes the Chapel Ridge, Meadowview, Woodlands, Bluffs, Creekside and McBane subdivisions, and other residential communities in the surrounding area, with no discharge of wastes to the surface waters, pursuant to the application received September 9, 2008, and subsequent additional information received by the Division of Water Quality (Division), and in conformity with the project plan, specifications, and other supporting data subsequently filed and approved by the Department of Environment and Natural Resources and considered a part of this permit. WQ0022870 Version 2,0 Shell Version 080827 Page 1 of 10 This permit shall be effective from the date of issuance until September 30, 2013, shall void Permit No. WQ0022870 issued April 26, 2006, and shall be subject to the following specified conditions and limitations: I. SCHEDULES [please review the entire permit for reporting, monitoring, and other on -going activities] Upon completion of construction and prior to operation of this permitted facility, a certification (see attached form) must be received from a professional engineer certifying that the permitted facility has been installed in accordance with this permit, the approved plans and specifications, and other supporting materials including the location of all monitoring wells as applicable. If this project is to be completed in phases and partially certified. you shall retain the responsibility to track further construction- approved under the same permit; _- and shall provideafinal certificate of ,completion once _ , the entire project has been completed. Mail the Certification to the Aquifer Protection Section, Division of Water Quality, 1636 Mail Service Center, Raleigh, NC 27699-1636. 2. The Raleigh Regional Office, telephone number (919) 791-4200 shall be notified at least 48 hours in advance (excluding weekends and holidays) of operation of the installed facilities so that an in -place inspection can be made. Such notification to the Aquifer Protection Section regional supervisor shall be made during the normal office hours from 8:00 a.m. until 5:00 p.m. on Monday through Friday, excluding State Holidays 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 that Rule 15A NCAC 02T .0105(d) requires an updated site map to be submitted with the permit renewal application. H. PERFORMANCE STANDARDS The reclaimed water utilization facilities shall be effectively maintained and operated at all times so that there is no discharge to the surface waters, nor any contamination of ground waters, which will render them unsatisfactory for normal use. In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions due to improper operation and maintenance, or failure of the utilization area to adequately assimilate the wastewater, the Permittee shall take immediate corrective actions including those actions that may be required by the Division of Water Quality (Division), such as the construction of additional or replacement wastewater treatment and disposal facilities. Please note that the Division has concerns regarding the amount of runoff calculated in the water balance for the irrigation system. If at any time runoff, ponding or other excessive irrigation problems occur, the Permittee may be required to acquire more irrigation area or increase the storage within the system. In addition, future phases of this project shall be required to justify similar runoff calculations 3. The issuance of this permit shall not relieve the Permittee of the responsibility for damages to ground or surface waters resulting from the operation of this facility. 4. All wells that are constructed for purposes of groundwater monitoring shall be constructed in accordance with 15A NCAC 02C .0108 (Standards of Construction for Wells Other than Water Supply) and any other state and local laws and regulations pertaining to well construction. 5. Effluent limitations shall not exceed those specified in Attachment A. 6. Application rate(s), whether hydraulic, nutrient, or other pollutant shall not exceed those specified in Attachment B. WQ0022870 Version 2.0 Shell Version 080827 Page 2 of 10 7. The COMPLIANCE and REVIEW BOUNDARIES for the reclaimed utilization system 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. 8. The Permittee shall apply for a permit modification prior to any sale or transfer of property that affects a compliance boundary to establish a new compliance boundary. 9. In accordance with 15A NCAC 02L .0107(d), no wells, other than monitoring wells, shall be constructed within the compliance boundary except as provided by 15A NCAC 02L .0107(g). 10. The facilities permitted herein must be constructed according to the following setbacks: a. The setbacks for reclaimed utilization sites shall be as follows (all distances infect): i. Surface waters not classified SA: 25 ii. Surface waters classified SA: 100 iii. Any well with exception to monitoring wells 100 b. The setbacks for treatment and storage units shall be as follows (all distances in feet): i. Any well with exception of monitoring wells: 100 ii. Any property line: 50 11. The following shall be requirements for the reclaimed water distribution, storage, and utilization facilities: a. All reclaimed water valves, storage facilities, and outlets shall be tagged or labeled to warn the public or employees that the water is not intended for drinking. Where appropriate, such warning shall inform the public or employees to avoid contact with the water. b. All reclaimed water piping, valves, outlets, and other appurtenances shall be color -coded, taped, or otherwise marked to identify the source of the water as being reclaimed water. i. All reclaimed water piping and appurtenances shall be either colored purple (i.e., Pantone 522) and embossed or integrally stamped or marked "CAUTION: RECLAIMED WATER — DO NOT DRINK" or be installed with a purple (i.e., Pantone 522) identification tape or polyethylene vinyl wrap. The warning shall be stamped on opposite sides of the pipe and repeated every three feet or less. ii. Identification tape shall be at least three inches wide and have white or black lettering on purple (i.e., Pantone 522) field stating "CAUTION: RECLAIMED WATER DO NOT DRINK." Identification tape shall be installed on top of reclaimed water pipelines, fastened at least every 10 feet to each pipe length and run continuously the entire length of the pipe. c. All reclaimed water valves and outlets shall be of a type, or secured in a manner, that permits operation by authorized personnel only. d. Above -ground hose bibs (i.e., spigots or other hand -operated connections) shall not be present. Hose bibs shall be located in locked below -grade vaults that shall be clearly labeled as being of non -potable quality. As an alternative to the use of locked below -grade vaults with standard hose bibs services, hose bibs, which can only be operated by a special tool or connected to a special hose connection, may be placed in non -lockable underground services boxes clearly labeled as non -potable water. WQ0022870 Version 2.0 Shell Version 080827 Page 3 of 10 12. The Permittee shall maintain an active cross -connection control program that shall have the following minimum requirements: a. No direct cross -connections shall be allowed between the reclaimed water and potable water systems. b. A reduced pressure principle backflow preventer, an approved air gap separation, or other device approved by the Division of Environmental Health shall be installed at the potable water service connection to the use area where both reclaimed water and potable water are supplied to a reclaimed water use area. The installation of the reduced pressure principle backtlow prevention device shall allow proper testing. c. An air gap separation, approved and regularly inspected by the Permittee shall be provided between the potable water and reclaimed water systems where potable water is used to supplement a reclaimed water system. 13. Reclaimed water distribution lines shall be located 10 feet horizontally from and 18 inches below any water line where practicable. Where these separation distances cannot be met, the piping and integrity testing procedures shall meet water main standards in accordance with 15A NCAC 18C. 14. Reclaimed water distribution lines shall not be less than 100 feet from a well unless the piping and integrity testing procedures meet water main standards in accordance with 15A NCAC 18C, but no case shall they be less than 25 feet from a private well or 50 feet from a public well. 15. Reclaimed water distribution lines shall meet the .separation distances to sewer lines in accordance with Rule .0305 of Subchapter 02T. 16. The Operational Agreement (see attached) between the Permittee and the Environmental Management Commission is incorporated herein by reference and shall be a condition of this permit. Noncompliance with the terms of the Operational Agreement shall subject the Permittee to all sanctions provided by North Carolina General Statutes § 143-215.6A to § 143-215.6C for violation of or failure to act in accordance with the terms and conditions of this permit. 17. The reclaimed water utilization system shall be connected to a rain or moisture sensor that shall indicate when reclaimed water application is not appropriate in accordance with Condition II1.4..and 1I1.5. of this permit. 18. The soils located on site contain high amounts of silt and clay and are susceptible to compaction when wet. The Permittee shall ensure all necessary precautions are taken to avoid compaction that will have an adverse effect upon the drainage of the irrigation areas. 19. Areas of this site contain soils that have a seasonal high water table that is within 1 foot of the soil surface. The Permittee shall carefully monitor water tables in these areas to ensure that wastewater will not be applied when the vertical separation between the wastewater and the seasonal high water table is less than one (1) foot. III. OPERATION AND MAINTENANCE REOUIREMENTS 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 pursuant to 15A NCAC 02T .0913 including operational functions, maintenance schedules, safety measures, and a spill response plan, WQ0022870 Version 2.0 Shell Version 080827 Page 4 of 10 2. Upon classification of the wastewater treatment and reclaimed utilization facilities by the Water Pollution Control System Operators Certification Commission (WPCSOCC), the Permittee shall designate and employ a certified operator to be in responsible charge (ORC) and one or more certified operator(s) to be back-up ORC(s) of the facilities in accordance with 15A NCAC 08G .0200. The ORC shall visit the facilities in accordance with 15A NCAC 08G .0200 or as specified in this permit and shall comply with all other conditions specified in these rules. 3. A suitable year round vegetative cover shall be maintained such that crop health is optimized, allows for even distribution of effluent, and allows inspection of the reclaimed water utilization system. 4. Adequate measures shall be taken to prevent ponding or runoff from the reclaimed water utilization areas. 5. Reclaimed water application shall not be performed during inclement weather or when the ground is in a condition that will cause ponding or runoff. 6. All reclaimed water application equipment must be tested and calibrated at least once per permit cycle. Records of the calibration must be maintained for five years. 7. No type of wastewater other than that from Buck Mountain Service Area shall be applied to the reclaimed water utilization area(s). Public access to the reclaimed water utilization sites shall be controlled during active site use. Such controls may include the posting of signs showing the activities being conducted at each site. A sign shall be posted in plain sight in the clubhouse showing these activities. The residuals generated from these treatment facilities must be disposed / utilized in accordance with 15A NCAC 02T .1100. The Per�mittee shall maintain a residual management plan pursuant to 15A NCAC 02T .0914. 10. Diversion or bypassing of the untreated wastewater from the treatment facilities is prohibited. 11. Freeboard in the five day upset and wet weather storage ponds shall not be less than two (2) feet at any time. 12. A waste -level gauge, to monitor waste levels in the storage pond, shall be provided. This gauge shall have readily visible penxranent markings indicating the 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 elevations. 13. A protective vegetative cover shall be established and maintained on all earthen basin embankments (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 basin dikes or embankments. Earthen basin embankment areas shall be kept snowed or otherwise controlled and accessible. 14. All wastewater shall be routed to the five-day holding pond should the limit for fecal coliform (daily maximum concentration of 25 per 100 ml) or turbidity (instantaneous maximum of 10 NTU) be exceeded, until such time that the problems associated with the treatment capability of the wastewater treatment plant have been corrected. The wastewater in the five-day holding pond shall be pumped back to the treatment plant for re -treatment or treated in the five-day holding pond prior to discharge to the storage pond. WQ0022S70 Version 2.0 Shell Version 080827 Page 5 of 10 IV. MONITORING AND REPORTING REQUIREMENTS , ' I. Any monitoring (including groundwater, surface water, soil or plant tissue analyses) deemed necessary by the Division to ensure surface and ground water protection will be established and an acceptable sampling reporting schedule shall be followed.. 2. All laboratory analyses for effluent, ground waters, or surface waters shall be made by a laboratory certified by the Division for the required parameter(s) under 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 consistent with approved engineering and scientific practices to ensure the accuracy and reliability of flow measurement. Flow measurement devices selected shall be capable of measuring flows with a maximum deviation of less than 10 percent froze true flow, accurately calibrated at a minimum of once per year, and maintained to ensure that the accuracy of the measurements is consistent with the accepted capability of that type of device. The Permittee shall keep records of flow measurement device calibration on file for a period of at least three years. At a minimum, data to be included in this documentation shall be: a. Date of flow measurement device calibration, b. Name of person performing calibration, and c. Percent from true flow. 4. The effluent from the subject facilities shall be monitored by the Permittee at the frequency(ies) and location(s) for the parameter(s) specified in Attachment A. 5. The Permittee shall monitor the surface water at the frequency(ies) and location(s) for the parameter(s) specified in Attachment A. 6, The Permittee tracking the amount of reclaimed water applied shall maintain adequate records. These records shall include, but are not necessarily limited to, the following information: a. Date of reclaimed water application, b. Volume of reclaimed water applied, c. Field irrigated, d. Length of time field is irrigated, e. Continuous weekly, monthly, and year-to-date hydraulic (inches/acre) loadings for each field. f. Continuous monthly and year-to-date loadings for any non -hydraulic parameter specifically limited in Attachment B for each field, g. Weather conditions, and h. Maintenance of cover crops. 7. Freeboard (i.e., waste level to the lowest elevation on the top of the embankment) in the storage pond shall be recorded weekly. 8. Monitor wells shall be sampled at the frequencies and for the parameters specified in Attachment C. All mapping,_well construction forms, well abandonment forms, and monitoring data shall refer to the permit number and the well nomenclature as provided in Attachment „C and Figure 1 9. Two copies of the results of the sampling and analysis must be received on Form GW-59 (Groundwater Quality Monitoring: Compliance Report Form), along with attached copies of laboratory analyses, by the Division. of Water Quality, Information Processing Unit, 1617 Mail Service Center, Raleigh, North Carolina 27699-1617 on or before the last working day of the month following the sampling month. Form GW-59 shall include the number of this permit and the appropriate well identification number. One Form GW-59a certification form shall be provided for each set of sampling results submitted. WQ0022870 Version 2.0 Shell Version 080827 Page 6 of 10 10. Three copies of all monitoring data [as specified in Conditions IV,3. IVA, and N.S.] on Form NDMR for each point prior to irrigation (PPI) and three copies of all operation and disposal records [as specified in Conditions IV.6. and IV.7.] on Form NDAR-1 for every utilization area 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 Quality Information. Processing Unit 1617 Mail Service Center Raleigh, North Carolina 27699-1617 11. A record shall be maintained of all residuals removed from this facility. This record shall include the name of the hauler, permit authorizing the disposal or a letter from a municipality agreeing to accept the residuals, date the residuals were hauled, and volume of residuals removed. 12, A maintenance log shall be maintained at this facility including but not limited to the following items: a. Visual observations of the plant and plant site. b. Record of preventative maintenance (changing of filters, adjusting belt tensions, alarm testing, diffuser inspections and cleanings, etc.). c. Date of calibration of flow measurement device. d. Date and results of power interruption testing on alternate power supply. 13. NoneompIiance Notification: The Permittee shall report by telephone to the Raleigh Regional Office, telephone number (919) 791- 4200, 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. Any occurrence at the wastewater treatment facility which results in the treatment of significant amounts of wastes which are abnormal in quantity or characteristic, such as the dumping of the contents of a sludge digester; the known passage of a slug of hazardous substance through the facility; or any other unusual circumstances including pending in the reclaimed utilization area or runoff from the reclaimed utilization areas. b. Any process unit failure, due to known or unknown reasons, that render the facility incapable of adequate wastewater treatment such as mechanical or electrical failures of pumps, aerators, compressors, etc. c. Any failure of disposal system resulting in a by-pass directly to receiving waters. d. Any time that self monitoring information indicates that the facility has gone out of compliance with its permit limitations including, but not limited to, freeboard measurements, effluent limitations, exceedances of groundwater standards, or overloading of any utilization area. For any emergency that requires immediate reporting (e.g., discharges to surface waters, imminent failure of a storage structure, etc.) outside normal business hours must 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 (5) days following first knowledge of the occurrence. This report must outline the actions taken or proposed to be taken to ensure that the problem does not recur, V. INSPECTIONS 1. Adequate inspection and maintenance shall be provided by the Perrnittee to ensure proper operation of the subject facilities. WQ0022870 Version 2.0 Shell Version 080827 Page 7 of 10 2. The Permittee or his designee shall inspect the wastewater treatment and disposal facilities to prevent malfunctions and deterioration, operator errors and discharges which may cause or lead to the release of wastes to the environment, a threat to human health, or a nuisance. The Permittee shall keep an inspection log or summary including at least the date and time of inspection, observations made, and any maintenance, repairs, or corrective actions taken by the Permittee. This log of inspections shall be maintained by the Permittee for a period of five years from the date of the inspection and shall be made available upon request to the Division or other permitting authority. 3. Any duly authorized officer, employee, or representative of the Division may, upon presentation of credentials, enter and inspect any property, premises or place on or related to the disposal site or facilit,+ at any reasonable time for the purpose of determining compliance with this permit; may inspect or copy any records that must be maintained under the terms and conditions of this permit, and may obtain samples of groundwater, surface water, or leachate. W. GENERAL CONDITIONS 1. Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to an enforcement action by the Division in accordance with North Carolina General Statute 143- 215.6A to 143-215.6C. 2. This permit shall become voidable unless the facilities are constructed in accordance with the conditions of this permit, the approved plans and specifications, and other supporting data. This permit is effective only with respect to the nature and volume of wastes described in the application and other supporting data. No variances to applicable rules governing the construction and / or operation of the permitted facilities are granted unless specifically requested and granted in this permit. 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 government agencies (local, state, and federal) that have jurisdiction. 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 the Division's General Permit NCG010000, and any requirements pertaining to wetlands under 15A NCAC 02B .0200 and 02H .0500. In the event there is a desire for the facilities to change ownership, or there is a name change of the Permittee, a formal permit request must be submitted to the Division on official Division forms, documentation from the parties involved, and other supporting materials as may be appropriate. The approval of this request will be considered on its merits and may or may not be approved. The Permittee of record shall remain fully responsible for compliance until a permit is issued to the new owner. 6. The Permittee shall retain a set of approved plans and specifications for the life of the facilities permitted herein. 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. The Permittee must pay the annual fee within 30 days after being billed by the Division. Failure to pay the fee accordingly may cause the Division to initiate action to revoke this permit pursuant to 15A NCAC 02T .0105(e). WQ0022870 Version 2.0 Shell Version 080827 Page 8 of 10 Permit issued this the 23`' day of October 2008 NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION Coleen H. Sullins, Director O Division of Water Quality 0 By Authority of the Environmental Management Commission Permit Number WQ0022870 WQ0022870 Version 2.0 Shell Version 080827 Page 9 of 10 Permit No. WQ0022870 October 23, 2008 ENGINEER'S CERTIFICATION Partial Final I, , as a duly registered Professional Engineer in the State of North Carolina, having been authorized to observe (periodically, weekly, full time) the construction of the project, Project Name Location and County for the Permittee hereby state that, to the best of Amy abilities, due care and diligence was used in the observation of the construction such that the construction was observed to be built within substantial compliance and intent of this permit, the approved plans and specifications, and other supporting materials. Signature Date Registration No. WQ0022870 Version 2.0 Shell Version 080827 Page 10 of 10 ATTACHMENT A - LIMITATIONS AND MONITORING REQUIREMENTS PPI 001— WWTF EFFLUENT Permit Number: WQ0022870 Version: 2.0 EFFLUENT CHARACTERISTICS EFFLUENT LIMITS MONITORIING REQUIREMENTS Parameter Description - PCS Code Monthly Average° Weekly Average Daily Maximum` Measurement Frequency Sample Type Nitrogen, Nitrate Total (as N) - 00620 2 X month Composite Solids, Total Suspended - 00530 5 mg/l 10. mg/l 2 X month Composite Nitrogen, Ammonia Total (as N) - 00610 4 mg/1 6. mg/l 2 X month Composite Chloride (as Cl) - 00940 4 X years Composite BOD, 5-Day (20 Deg. C) - 00310 10 mg/l 15. mg/l 2 X month Composite PH - 00400 6.0 - 9,0e su 9. su 5 X week Grab Solids, Total Dissolved - 70295 4 X yearn Composite Coliform, Fecal MF, M-FC Broth,44.5C - 31616 (geom.zmean) 14b ##/100m1 25. #/100ml 2 X month Grab Chlorine, Total Residual - 50060 5 X week Grab Carbon, Tot Organic (TOC) - 00680 4 X year" Grab Flow, in conduit or thru treatment plant - 50050 500,000t gpd Continuous Recorder Flow, in conduit or thm treatment plant - 50050 270,000 gpd Continuous Recorder Turbidity, HCH Turbidimiter - 00076 10. ntu Continuous Recorder PPI 002 — SURFACE WATER MONITORING STATION #1 EFFLUENT CHARACTERISTICS EFFLUENT LIMITS MONITORING REQUIREMENTS Parameter Description - PCS Code Monthly Averages Weekly Average Daily Maximum` Measurement Frequency Sample Type Water level, distance from measuring point - 82546 4 X year° Calculated Nitrogen, Total (as N) - 00600 4 X years Grab pH - 00400 4 X years Grab Phosphorus, Total (as P) - 00665 4 X yearn Grab Coliform, Fecal MF, M-FC Broth,44.5C - 31616 b 4 X yearn Grab WQ0022870 Version 2.0 Attachment A Page 1 of 4 PPI 003 - SURFACE WATER MONITORING STATION #2 EFFLUENT CHARACTERISTICS EFFLUENT LIMITS MONITORING REQUIREMENTS Parameter Description - PCS Code Monthly Average° Weekly Average Daily Maximum` Measurement Frequency Sample Type Water level, distance from measuring point - 82546 4 X yeard Calculated Nitrogen, Total (as N) - 00600 4 X yeard Grab pH - 00400 4 X yeard Grab Phosphorus, Total (as P) - 00665 4 X yeard Grab Coliform, Fecal MF, M-FC Broth,44.5C - 31616 b 4 X yeard Grab PPI 004 - SURFACE WATER MONITORING STATION #3 EFFLUENT CHARACTERISTICS EFFLUENT LIMITS MONITORING REQUIREMENTS Parameter Description - PCS Code Monthly Average' Weekly Average Daily Maximum Measurement Frequency Sample Type Water level, distance from measuring point - 82546 4 X yeard Calculated Nitrogen, Total (as N) - 00600 4 X yeard Grab pH -00400 4 X yeard Grab Phosphorus, Total (as P) - 00665 4 X yeard Grab Coliform, Fecal MF, M-FC Broth,44.5C - 31616 b 4 X yeard Grab PPI 005 -- SURFACE WATER MONITORING STATION #4 EFFLUENT CHARACTERISTICS EFFLUENT LIMITS MONITORING REQUIREMENTS Parameter Description - PCS Code Monthly Average" Weekly Average Daily Maximum` Measurement Frequency Sample Type Water level, distance from measuring point - 82546 4 X yeard Calculated Nitrogen, Total (as N) - 00600 4 X yeard Grab pH - 00400 4 X yeard Grab Phosphorus, Total (as P) - 00665 4 X yeard Grab Coliform, Fecal MF, M-FC Broth,44.5C - 31616 b 4 X yeard Grab WQ0022g' 'ersion 10 Attachment A ° 2 of 4 PPI 006 — SURFACE WATER MONITORING STATION #5 EFFLUENT CHARACTERISTICS EFFLUENT LIMITS MONITORING REQUIREMENTS Parameter Description - PCS Code Monthly Average Weekly Average Daily Maximum` Measurement Frequency Sample Type Water level, distance from measuring point - 82546 4 X year Calculated Nitrogen, Total (as N) - 00600 4 X yeard Grab pH - 00400 4 X year Grab Phosphorus, Total (as P) - 00665 4 X yearn Grab Coliform, Fecal MF, M-FC Broth,44.5C - 31616 b 4 X yeard Grab PPI 007 — SURFACE WATER MONITORING STATION #6 EFFLUENT CHARACTERISTICS EFFLUENT LIMITS MONITORING REQUIREMENTS Parameter Description - PCS Code Monthly Average' Weekly Average Daily Maximum e Measurement Frequency Sample Type Water level, distance from measuring point - 82546 4 X yeard Calculated Nitrogen, Total (as N) - 00600 4 X year Grab pH - 00400 4 X yeard Grab Phosphorus, Total (as P) - 00665 4 X yeard Grab Coliform, Fecal MF, M-FC Broth,44.5C - 31616 b 4 X yeard Grab Notes: 'Monthly averages for all but fecal coliform shall be the arithmetic mean of all samples collected during the reporting period. "Monthly average for fecal coliform shall be the geometric mean of all samples collected during the reporting period. Daily maximum shall be the maximum value of all samples collected during the reporting period. d 4 X year sampling shall be conducted during March, June, September, and December.. The effluent pH shall not be less than 6.0 standard units nor greater than 9.0 standard units r. Upon receipt Engineer's Certification for the completion of construction activities, the permitted flow will increase to 500,000 gallons per day WQ0022870 Version 2.0 Attachment A Page 3 of 4 THIS PAGE BLANK WQ00228' 'ersion 2.0 Attachment A ; 4 of ATTACHMENT B T APPROVED LAND APPLICATION SITES AND LIMITATIONS Aqua North Carolina - Buck Mountain Service Area Permit Number: WQ0022870 Version: 2.0 UTILIZATION AREA INFORMATION APPLICATION LIMITATIONS Field/ Basin Owner County Latitude Longitude Net Acreage Soil Dominant Soil Series Parameter Rate Yearly Max Units CR Heater Utilities Inc Chatham 35047'18" 79014'14" 1.34 Georgeville 01284 - Application Surface Irrigation 0.5 17.58 inches DR Heater Utilities Inc Chatham 35'47'18" 79014'14" 14.90 Goldston 01284 - Application Surface Irrigation 0.1 20.47 inches F-I Heater Utilities Inc Chatham 35047'18" 79°14'14" 11.40 Nason 01284 - Application Surface Irrigation 0.1 20.47 inches F-10 Heater Utilities Inc Chatham 35°47'18" 79°14'14" 5.76 Georgeville 01284 - Application Surface Irrigation 0.1 20A7 inches F-106 Heater Utilities Inc Chatham 35047'19" 79°IT14" 5.69 Lignum 01284 - Application Surface Irrigation 0.1 7.43 inches F-1 I Heater Utilities Inc Chatham 35°47'18" 79°14'14" 4.69 Herndon 01284 - Application Surface Irrigation 0.1 20.47 inches F-11B Heater Utilities Inc Chatham 35047'18" 7901414" 4.20 Georgeville 01284 - Application Surface Irrigation 0.1 20.47 inches F-11C Heater Utilities Inc Chatham 35047'18" 79°14'14" 9.37 Lignum 01284 - Application Surface Irrigation 0.1 7.43 inches F-12 Heater Utilities ]no Chatham 35°47'18" 79°14'14" 2.62 Georgeville 01284 - Application Surface Irrigation 0.1 20.47 inches F-12B Heater Utilities Inc Chatham 35047'18" 79014/4/' 1.54 Cid 01284 - Application Surface Irrigation 0.1 7.43 inches F-13 Heater Utilities Inc Chatham 35°4718" 79°14'I4" 8.49 Georgeville 01284 - Application Surface Irrigation 0.1 20.47 inches F-13B Beater Utilities Inc Chatham 35'47'18" 79°14'14" 2.20 Lignum 01284 - Application Surface Irrigation 0.1 7A3 inches F-14 Heater Utilities Inc Chatham 35047'18" 79014'14" 9.91 Georgeville 01284 - Application Surface Irrigation 0.1 20.47 inches F-15 Heater Utilities Inc Chatham 35047'18" 79014-14" 4.79 Nason 01284 - Application Surface Irrigation 0.1 20.47 inches F-16 Heater Utilities Inc Chatham 35047'18" 79014'14" 9.05 Goldston 01284 - Application Surface Irrigation 0.1 20A7 inches F-17 Heater Utilities Inc Chatham 35047'18" 79014' 14" 5.37 Georgeville 01284 - Application Surface Irrigation 0.1 20.47 inches F-18 Heater Utilities Inc Chatham 3504718" 79014'I4" 17.80 Georgeville 01284 - Application Surface Irrigation 0.1 20.47 inches F-2 Heater Utilities Inc Chatham 35°47'18" 79014-14" 5.56 Nason 01284 - Application Surface Irrigation 0.1 20.47 inches F-23 Heater Utilities Inc Chatham 35°47'18" 79014'14" 4.22 Lignum 01284 - Application Surface Irrigation 0.1 7.43 inches F-3 Neater Utilities Inc Chatham 35047'18" 79014'14" 10.66 Goldston 01284 - Application Surface Irrigation 0.1 20A7 inches F-313 heater Utilities Inc Chatham 35047'18" 790tT14" 3.01 Cid 01284 - Application Surface Irrigation 0.1 7.43 inches F-4 Heater Utilities Inc Chatham 3504718" 79014'14" 7.18 Herndon 01284 - Application Surface Irrigation 0.1 20.47 inches F-5 Heater Utilities Inc Chatham 3504718" 790I4'14" 13.22 Georgeville 01284 - Application Surface Irrigation 0.1 20.47 inches F-6 Heater Utilities Inc Chatham 35047'18" 79°1414" 4.94 Georgeville 01284 - Application Surface Irrigation 0.1 20.47 inches WQ0022870 Version 2.0 Attachment B Page 1 of F-7 Heater Utilities Inc Chatham 35R47'18" 79014'14" 16.48 Georgeville 01284 - Application Surface Irrigation 0.1 20.47 inches F-8 Heater Utilities Inc Chatham 35°47'18" 79°14'14" 4.06 Georgeville 01284 - Application Surface Irrigation 0.1 20.47 inches F-9 Heater Utilities Inc Chatham 35°4718" 7901414" 10.11 Nason 01284 - Application Surface Irrigation 0.1 20.47 inches OS-1 Heater Utilities Inc Chatham 35047'18" 79014'14" .70 Georgeville 01284 - Application Surface Irrigation 0.1 20.47 inches OS-2 Heater Utilities Inc Chatham 3504718" 79014'14" 1.65 Georgeville 01284 - Application Surface Irrigation 0.1 20.47 inches OS-3 Heater Utilities Inc Chatham 35047'l8" 79°14'14" .49 Georgeville 01284 - Application Surface Irrigation 0.1 20.47 inches OS-4 Heater Utilities Inc Chatham 35°47'18" 79°14'14" 2.71 Nason 0 12 84 - Application Surface Irrigation 0.1 20.47 inches OS-5 Heater Utilities Inc Chatham 35°47'18" 79°14'14" 95 Nason 01284 - Application Surface Irrigation 0.1 20.47 inches OS-6 Heater Utilities Inc Chatham 35047'18" 79014'14" 1.29 Tatum 01284 - Application Surface Irrigation 0.1 20.47 inches OS-6I3 Heater Utilities Inc Chatham 3504718" 79014'14" 1.99 Cid 01284 - Application Surface Irrigation 0.1 7.43 inches OS-7 Heater Utilities Inc Chatham 351147'18" 79014'14" 3.83 Tatum 01284 - Application Surface Irrigation 0.1 2047 inches PHSA-1 Heater Utilities Inc Chatham 35046'l9" 79013'00" 1.10 Cid 01284 - Application Surface Irrigation 0.1 15.86 inches PHSA-2 Heater Utilities Inc Chatham 35046'54" 79013'30" 6.00 Goldston 01284 - Application Surface Irrigation 0.1 15.86 inches PHSA-3 Heater Utilities Inc Chatham 35046'54" 79°13'44" 2.90 Goldston 01284 - Application Surface Irrigation 0.1 15.86 inches PHSA-4 Heater Utilities Inc Chatham 35°47'03" 79°14'08" 15.70 Cid 01284 - Application Surface Irrigation 0.1 15.86 inches PHSA-5 Heater Utilities Inc Chatham 35°47'04" 79014'21" 9.70 Cid 01284 - Application Surface Irrigation 0.1 15.86 inches PHSA-6 Heater Utilities Inc Chatham 35047'12" 79°14'22" 1.70 Tan -us 01284 - Application Surface Irrigation 0.1 15.86 inches PHSA-7 Heater Utilities Inc Chatham 35°4733" 79°14'21" 13.60 Tarrus 01284 - Application Surface Irrigation 0.1 15.86 inches PLSA-I Heater Utilities Inc Chatham 35°46'14" 79012127" 5.10 Cid 01284 - Application Surface Irrigation 0.1 13.538 inches PLSA-10 Heater Utilities Inc Chatham 35°46'51" 79013'45" 7.20 Cid 0 12 84 - Application Surface Irrigation 0.1 13.538 inches PLSA-11 Heater Utilities Inc Chatham 35°46'45" 79'13'55" 12.60 Misenheimer 01284 - Application Surface Irrigation 0.1 13.533 inches PLSA-12 Heater Utilities Inc Chatham 35046'37" 79013'54" 2.20 Cid 01284 - Application Surface Irrigation 0.1 13.532 inches PLSA-13 Heater Utilities Inc Chatham 35°46'39" 79°I4'16" 7.10 Cid 01284 - Application Surface Irrigation 0. L 13.53' inches PLSA-14 Heater Utilities Inc Chatham 35°46'48" 79014'13" 3.I0 Cid 01284 - Application Surface Irrigation 0.1 13.53' inches PLSA-15 Heater Utilities Inc Chatham 35°46'56" 7901417" 5.00 Cid 01284 - Application Surface Irrigation 0.1 13.53' inches PLSA-16 Heater Utilities Inc Chatham 35°46'53" 79°13'59". 17.40 Cid 01284 - Application Surface Irrigation 0.1 13.53a inches PLSA-17 Heater Utilities Inc Chatham 35°47'03" 79°14'12" 1.30 Cid 01284 - Application Surface Irrigation 0.1 13.53a inches PLSA-18 Heater Utilities Inc Chatham 35°46'60" 79014'24" 5.10 Cid 01284 - Application Surface Irrigation 0.1 13.53a inches PLSA-19 Heater Utilities Inc Chatham 35046'57" 79014'34" 1.10 Cid 01284 - Application Surface Irrigation 0.1 13.53" inches WQ0022F ' 'ersion 2.0 Attachment B age 2 of 4 PLSA-2 Heater Utilities Inc Chatham 35046'20" 79012-29" 6.20 Cid 01284 - Application Surface Irrigation 0.1 13.53a inches PLSA-20 Heater Utilities Inc Chatham 35'47'11" 79014'23" 1.40 Cid 01284 - Application Surface Irrigation 0.1 13.533 inches PLSA-21 Heater Utilities Inc Chatham 35°46'17" 79°14'24" 5.30 Cid 0J284 - Application Surface Irrigation 0.1 13.53a inches PLSA-22 Heater Utilities Inc Chatham 35a47'25" 79014'23" 9.40 Cid 01284 - Application Surface Irrigation 0.1 13.533 inches PLSA-24 Heater Utilities Inc Chatham 35°46'45" 79°I3'24" 3.20 Cid 01284 - Application Surface Irrigation 0.1 11V inches PLSA-26 Heater Utilities Inc Chatham 35°47'08" 79014'27" 1.10 Cid 01284 - Application Surface Irrigation 0.1 13.53a inches PLSA-3 Heater Utilities Inc Chatham 35°46'07" 79°12'45" 16.90 Cid 01284 - Application Surface Irrigation 0.,1 13.53' inches PLSA-4 Heater Utilities Inc Chatham 35a46'20" 79012'43" 3.70 Misenheimer 01284 - Application Surface Irrigation 0.1 13.53" inches PLSA-5 Heater Utilities Inc Chatham 35°46'14" 79'13'04" 5.90 Cid 01284 - Application Surface Irrigation 0.1 13.53' inches PLSA-6A Heater Utilities Inc Chatham 35°46'21" 79°12'55" 2.80 Cid 01284 - Application Surface Irrigation 0.1 13.53a inches PLSA-6B Heater Utilities Inc Chatham 35046'26" 7901311" 2.30 Cid 01284 - Application Surface Irrigation 0.1 13.53a incites PLSA-7 Heater Utilities Inc Chatham 35°46'24" 79°13'22" 17.90 Cid 01284 - Application Surface Irrigation 0.1 13.53a inches PLSA-8 Heater Utilities Inc Chatham 35046'55" 79013'06" 3.80 Cid 01284 - Application Surface Irrigation 0.1 13.53a inches PLSA-9 Heater Utilities Inc Chatham 35046'53" 79'13'27" 1.70 Goldston 01284 - Application Surface Irrigation 0.1 13.53a inches SSA-1 Heater Utilities Inc Chatham 35'46'19" 79°13'08" 1.10 Cid 01284 - Application Surface Irrigation 0.I 7b inches SSA-2 Heater Utilities Inc Chatham 3504621" 79013115" 3.30 Crawfordsville 01284 - Application Surface Irrigation 0.1 7b inches SSA-4 Heater Utilities Inc Chatham 35046'21" 7901328" 5.60 Cid 01284 - Application Surface Irrigation 0.1 7b inches SSA-6 Heater Utilities Inc Chatham 35°47'04" 79014'21" 4.00 Cid 01284 - Application Surface Irrigation 0.1 76 inches SSA-8 Heater Utilities Inc Chatham 35046'57" 79014'29" 3.40 Cid 01284 - Application Surface Irrigation 0.1 7b inches Total 429.07 Notes' 'Fields PLSA-1 through PLSA-26 shall only be irrigated from April 1 through November 30. b Fields PHSA-1 through PHSA-7 shall only be irrigated from May 1 through October 31. WQ0022870 Version 2.0 Attachment B Page 3 of THIS PAGE BLANK WQ00228- 'ersion 2.0 Attachment B cge 4 of 4 ATTACHMENT C — GROUNDWATER MONITORING AND LIMITATIONS Monitoring wells: MW-1, MW-2, and MW-3 Permit Number: WQ0022870 Version: 2.0 GROUNDWATER CHARACTERISTICS GROUNDWATER STANDARDS MONITORING REQUIREMENTS Parameter Description - Parameter Code Daily Maximum Frequency Measurement Sample Type Footnotes pH - 00400 8.50 su 4 X year Grab 1, 2, 5 Coliform, Fecal MF, M-FC Broth,44.5C - 31616 4 X year Grab 1,5 Water level, distance from measuring point - 82546 4 X year Calculated 1, 2, 3, 5 Carbon, Tot Organic (TOC) - 00680 4 X year Grab 1, 4, 5 Chloride (as Cl) - 00940 250.00 mg/L 4 X year Grab 1,5 Nitrogen, Ammonia Total (as N) - 00610 Nitrogen, Nitrate Total (as N) - 00620 10.00 mg/L 4 X year 4 X year Grab Grab 1,5 1, $ Phosphorus, Total (as P) - 00665 4 X year Grab 1,5 Solids, Total Dissolved - 70295 4 X year Grab 1,5 1. 4 X year monitoring shall be conducted in March, June, September, and December. 2. The measurement of water levels shall be made prior to purging the wells. The depth to water in each well shall be measured from the surveyed point on the top of the casing. The measurement of pH shall be made after purging and prior to sampling for the remaining parameters. 3. The measuring points (top of well casing) of all monitoring wells shall be surveyed to provide the relative elevation of the measuring point for each monitoring well. The measuring points (top of casing) of all monitoring wells shall be surveyed relative to a common datum. 4. If TOC concentrations greater than 10 mg/l are detected in any downgradient monitoring well, additional sampling and analysis must be conducted 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 will be taken to represent the naturally occurring TOC concentration. Any exceedances of this naturally occurring TOC concentration in the downgradient wells shall be subject to the additional sampling and analysis as described above. 5. Monitoring wells shall be reported consistent with the nomenclature and location information provided in Figure 1 and this attachment. WQ0022870 Version 2.0 Attachment C Page 1 of I %A N7 Exhibit 1 PSW-4 Nil �X, .'1Q., i� '1.i '�`� r 'a •-`' LJ ~j'�f�. f € \74 . MI, IICM Sw- cz�,:• 4 r• I t v 2.5' ST i CAP WIT LOCK EEL COVER 25' RfSER /" u 7 GROUT 4 €0 SCREENED P" PVC FILTER 5ANO - TYPICAL MONITOR[NG WELL � Le end . GW ® Monitoring Well (Existing)(Chapel Ridge) NOTE: TtIE FEATURE5 DE5CR€BED AND DEPICTED HEREIN ARE 5A5ED UPON SW !� Stream and Sediment Sample (Existing)(Chapel Ridge) CURRENT DEVELOPMENT PLAN5. ACTUAL DEVELOPMENT MAY 5E 5U5JECT TO MOM SW • -Proposed Stream Sample (Meadowview) CHANGE BA5PD UPON FURTHER COUNTY MVI EW. 1 Town of Chapel Hill cs 7 Chapel Ridge N � o SR 'J. r5 50i Meatlpwvfew 8YAA5S 064 64 rawer of vrrrseorra VICINITY MAP c p z Q LJ IL P 0 u Lu �2.. .) z Q O N J b Q N U) F 0 2 ��Q O 1. N ®m �3: cc w L ^% >W 6O 1 EXHIBIT ra�r�ra