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HomeMy WebLinkAboutWQ0002284_Other_19920123IVED WAS'HINGTON OFFICE 1 . ,JAN 2 3 M2 State of North Carolina Department of Environment, Health and Natural Resources.. Division of Environmental Management 512 North Salisbury Street • Raleigh, North Carolina 27611 James G. Martin, Governor William W. Cobey, Jr., Secretary Mr. William T. Joyner, Project'Manager Kinnakeet Shores Partnership Post Office Box 541 Avon, NC 27915 January 23, 1992 Subject: George T. Everett, Ph.D Director Permit No. WQ0002284 Kinnakeet Shores Partnership Renewal Wastewater Treatment and Disposal, Facilities Dare County Dear Mr. Joyner: In accordance with your application for renewal received May 14, 1991, we are forwarding herewith Permit No. WQ0002284, dated January 23, 1992, to Kinnakeet Shores Partnership for the . continued operation and the construction of the subject facilities. This permit shall be effective from the date of issuance until December 31, 1996, shall hereby void Permit No. WQ0002284 issued February 5, 1990, 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. If any parts, requirements, or limitations contained in this permit are unacceptable to you, 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 North Carolina General Statutes, and filed with the Office of Administrative. Hearings, P.O. Drawer 27447, Raleigh, NC 27611-7447. Unless such demands are made this permit shall be final and binding. Regional Offices Asheville Fayetteville Mooresville Raleigh Washington Wilmington Winston-Salem 704/251-6208 919/486-1541 704/663-1699 919/733-2314 919/946-6481 919/395-3900 919/761-2351 Pollution Prevention Pays P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone 919-733-7015 An Equal Opportunity Affirmative Action Employer Mr. Joyner J4nuary 23, 1992 jPage Two The set of approved plans and specifications that were submitted as part of this renewal request is being forwarded to you. If you need additional information concerning this matter, please contact Mr. Lindsay L. Mize at 919/ 733-5083. cc: Dare Coun Health Department Groundwater Section Training and Certification Unit Facilities Assessment Unit u NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES 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 Kinnakeet Shores Partnership Dare County FOR THE operation of existing facilities consisting of approximately 3143 linear feet of 8-inch gravity sewers, 3362 linear feet of 4-inch force main, a 134 GPM wet well pump station equipped with duplex submersible pump high water alarms, and an existing 0.05 mgd extended aeration wastewater treatment facility; and construction and operation of a new 0.220 mgd extended aeration wastewater treatment and disposal facility consisting of a flow splitter box with bar screen, a 55,000 gallon surge tank with 153 gpm duplex surge pumps, dual 110,000 gallon each aeration basins, dual 24,684 gallon secondary clarifiers, a 32,912 gallon aerated sludge holding tank, 468 cfm triplex blowers, a 174 square -feet traveling bridge filter with 120 gpm backwash pumps, 3820 gallon each chlorine contact chambers with gaseous feed chlorinator, an effluent flow recorder and totalizer, a 5000 gallon effluent dosing tank with 80 gpm duplex dosing pumps and high water alarm, four (4) 100-foot diameter each hydraulically driven rotary distributors and all associated valves, nozzles, pipes and appurtenances, and a standby power unit to serve Kinnakeet Shores Partnership - Kinnakeet Shores Soundside with no discharge of wastes to the surface waters, pursuant to the application received May 14, 1991 and in conformity with the project plan, specifications, and other supporting data subsequently filed and approved by the Department of Environment, Health and Natural Resources and considered a part of this permit. This permit shall be effective from the date of issuance until December 31, 1996, and shall be subject to the following specified conditions and limitations: Upon completion of construction and prior to operation of this permitted facility, a certification 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. Mail the Certification to the Permits and Engineering Unit, P.O. Box 29535, Raleigh, NC 27626-0535. 2. The Washington Regional Office, phone no. 919/946-6481, shall be notified at least forty-eight (48) hours in advance of operation of the installed facilities so that an in -place inspection can be made. Such notification to the 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. 3. In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions, the Permittee shall take immediate corrective action to correct the problem, including actions as may be required by this Division, such as the construction of additional or replacement wastewater treatment or disposal facilities. 4. This permit shall become voidable if the soils fail to adequately absorb the wastes and may be rescinded unless the facilities are installed, maintained, and operated in a manner which will protect the assigned water quality standards of the surface waters and ground waters. Ponding of wastewater on the surface of the distribution field when the dosing cycle commences shall be considered evidence of failure of the soils to adequately absorb the wastewater. Additionally, such failure shall be interpreted as a violation of this permit condition. 5. The sludge generated from these treatment facilities must be disposed of in accordance with General Statute 143-215.1 and in a manner approved by the North Carolina Division of Environmental Management. 6. Adequate measures shall be taken to divert stormwater from the high rate infiltration area and to prevent wastewater runoff. 7. Diversion or bypassing of the untreated wastewater from the treatment facilities is prohibited. 8. The issuance of this permit shall not relieve the Permittee of the responsibility for damages to surface or groundwaters resulting from the operation of this facility. 9. The following buffers shall be maintained (existing facilities may be exempt): a) 500 feet between high rate infiltration unit and any public works surface supply or public shallow potable water well. b) 100 feet between high rate infiltration unit and any "SA" classified surface waters. c) 50 feet between high rate infiltration unit and any other surface waters. d) 100 feet between high rate infiltration unit and property lines. e) 50 feet between treatment units and property lines. f) 50 feet between high rate infiltration unit and other treatment units and public right of ways. g) 200 feet between high rate infiltration unit and surface or groundwater drainage systems. 10. A usable green area shall be maintained for wastewater disposal. The green area shall have the capability of accommodating the average daily flow of the facility being served without exceeding the loading rates of the green area. A "green area" as defined in 15 NCAC 2H .0404 (g)(7) is an area suitable for waste disposal, either in its natural state or which has been modified by planting a vegetative cover of grasses or low growing shrubbery. The facilities shall be properly maintained and operated at all times. i 2. Upon classification of the facility by the Certification Commission, the Permittee shall employ a certified wastewater treatment plant operator to be in responsible charge of the wastewater treatment facilities. The operator must hold a certificate of the type and grade at least equivalent to the classification assigned to the wastewater treatment facilities by the Certification Commission. Once the facility is classified, the Permittee must submit a letter to the Certification Commission which designates the operator in responsible charge within thirty days after the wastewater treatment facilities are 50% complete. 3. The Permittee shall provide for the pump station and force main the following items: a. Pump-on/pump-off elevations located so that 2-8 pumping cycles may be achieved per hour in the pump station. b. An air relief valve located at all high points along the force main. C. A screened vent for the wet well. d. Fillets located in the wet well at the intersection of the flooring and sidewalls. e. Three (3) feet of cover (minimum) over the force main or the use of ferrous material where three (3) feet cannot be maintained. f. Sufficient devices which will protect the pump station from vandals. g. Flood protection if the pump station is located below the 100-year flood elevation. 4. The facilities shall be effectively maintained and operated as a non -discharge system to prevent the discharge of any wastewater outside the high rate I infiltration disposal area resulting from the operation of this facility. 5. No traffic or equipment shall be allowed on the disposal area'except while installation occurs or while normal maintenance is being performed. 6. The rotary distribution fields shall be raked twice weekly during the months April to October, and once a week during the months of November to March. 7. The screenings removed from the wastewater treatment plant shall be properly disposed of in a sanitary landfill. 8. The distribution field(s) shall be kept free of vegetation at all times. There shall be no rotor tillers used on the rotary distribution field(s). Vegetation must be removed from the field(s) manually. 9. The application of chemicals to the distribution field(s) is expressly prohibited. 10. An automatically activated standby power source 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. The length of time that the standby power unit is operated shall be monitored and reported in maintenance referenced in Condition III 6. of this permit. The length of time that the standby power unit is operated due to power outage shall be reported separately from the time that the standby power is operated for the purpose of routine exercising. 11. The flow measurement device shall be calibrated annually by a representative of a firm which is routinely engaged in the calibration of flow measurement devices. Records of this calibration, including all information pertinent to the calibration, 'shall be available during any inspection by Division staff. 12. Diffusers shall be cleaned as needed to assure adequate aeration. Records of maintenance shall be maintained by the permittee. 13. The chlorine tablets used in the disinfection facility shall be of the kind and type specified in the plans and specifications approved by the Division. 14. Chlorine shall be maintained in the chlorinator at all times such that a minimum of 0.5 mg/l of chlorine residual is maintained after 30 minutes of contact time. 1. 2 Any monitoring deemed necessary by the Division of Environmental Management to insure surface and ground water protection will be established and an acceptable sampling reporting schedule shall be followed. As an indicator of proper operation and maintenance, the facility shall produce an effluent in compliance with the following limitations: Parameter Monthly Averagea Daily Maximumb Flow -Phase 1 50,000 GPD Flow -Phase 2 220,000 GPD BOD5 10 mg/1 15 mg/1 NH3 as N 4 mg/l 6 mg/1 TSS 20 mg/l 30 mg/1 a. Monthly average shall be the arithmetic mean of all samples collected during the reporting period. b. Daily maximum shall be the maximum value of all samples collected during the reporting period. The effluent from the subject facilities shall be monitored by the Permittee at the point prior to discharge to the rotary distributor for the following parameters: Location of Measurement Sample Parameter Sampling Points FreQuency IYW- BOD5, 5-day, 20C Effluent *2/Month Composite NH3 as N Effluent *2/1\4onth Composite TSS Effluent *2/Month Composite Fecal Coliform Effluent *2/1\4onth Grab pH Influent or Effluent Monthly Grab Flow Influent or Effluent Continuous Recording Settleable Matter Effluent Daily Grab Residual Chlorine Effluent Daily Grab NO3 Effluent Monthly Grab TDS Effluent Monthly Grab TOC Effluent Monthly Grab Chloride Effluent Monthly Grab Total Coliforms Effluent Monthly Grab Orthophosphate Effluent Monthly Grab TOX Effluent Monthly Grab N1 4 Effluent Monthly Grab The effluent pH shall not be less than 6.0 standard 'units nor greater than 9.0 standard units. *2/Month sampling frequency only during the months of April through October. During the remainder of the year, these parameters shallbe monitored monthly. If Groundwater sampling indicates or predicts problems with the compliance with Groundwater Standards, this permit will be modified to include additional and/or more restrictive limitations. 3. Three copies of all monitoring data (as specified in condition IH.2) shall be submitted on or before of the last day of the following month to the following'address: NC Division of Environmental Management Water Quality Section Facility Assessment Unit PO Box 29535 Raleigh, NC 27626-0535 4. The treatment facility shall be operated such that the treatment facility achieves a minimum of 90 percent removal of BODS and Total Suspended Solids and shall meet monthly average effluent limits contained in Condition III.2. 5. A record shall be maintained of all residuals removed from this facility. The 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 a volume of residuals removed. 6. A maintenance log shall be maintained at this facility including but not limited to the following items: i i a. Daily sampling results including residual chlorine, settleable matter, and dissolved oxygen in the aeration basin and at the clarifier weir. b. Visual observations of the plant and plant site. C. Record of preventative maintenance (changing of filters, adjusting belt tensions, alarm testing, diffuser inspections and cleanings, etc.). d. Date of calibration of flow measurement device. e. Date and results of power interruption testing on alternate power supply. f. Dates fields were raked and arms inspected. 7. Noncompliance Notification: The Permittee shall report by telephone to the Washington Regional Office, telephone no. 919/946-6481, 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 basin or tank; the known passage of a slug of hazardous substance through the facility; or any other unusual circumstances. IV. 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 a pumping station, sewer line, or treatment facility resulting in a by- pass of all or any portion of the influent to such station or facility. d. Any time that self -monitoring information indicates that the facility is not in compliance with its permit limitations. Persons reporting such occurrences by telephone shall also file a written report in letter form within 15 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. 1. The five (5) existing monitor wells, one (1) upgradient and four (4) downgradient, shall be sampled every April, August, and December for the following parameters: NO3 TOC Ammonia Nitrogen Water Level Total Suspended Solids Volatile Organic Compounds - TDS pH Chloride Total Coliforms In December only ( by Method 1 or Method 2 below) Method 1: Method 6230D ( Capillary - Column), "Standard Methods for the Examination of Water and Wastewater", 17th edition, 1989 Method 2: Method 502.2 " Methods for the Determination of Organic Compounds in Drinking Water", United States Environmental Protection Agency - 600/4-88/039 The measurement of water level must be made prior to sampling for the remaining parameters. The measuring points (top of well casing) of all monitoring wells shall be surveyed to provide relative elevations of the measuring point for each of the monitoring wells. The depth of water in each well shall be measured from the surveyed point on the top of the casing. 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. If any volatile organic compounds are detected by method 6230D, or the equivalent method 502.2, then EPA methods 604 and 611 must also be run to detect other organic compounds which may be present. The results of all analysis specified in the monitoring requirements, including 604 and 611 if required, must be submitted simultaneously. The results of the sampling and analysis shall be sent to the N.C. Division of Environmental Management on Form OW-59 (Compliance Monitoring Report Form) every May, September, and January. 2. The Compliance Boundary for the disposal system is specified by regulations in 15 NCAC 2L, Classifications and Water Quality Standards applicable to the groundwater of North Carolina. An exceedance of Groundwater Quality Standards beyond the Compliance Boundary is subject to penalty provisions applicable under General Statute 143-215.6A. The sale of property, by the Permittee, which is within or contiguous to the disposal system site may alter location of the Compliance Boundary. For facilities permitted on or after December 30, 1983, the Compliance Boundary is established at the lesser of 250 feet from the edge of the rotary distributors, or 50 feet within the property boundary. If the title to any property which may affect the location of the Compliance Boundary is changed, the permittee shall notify the Division Director within 14 days. The Director shall then establish a modified Compliance Boundary which will be done as a modification to the Permit. The REVIEW BOUNDARY for the disposal system is specified by regulations in 15 NCAC 2L, Groundwater Classifications and Standards. A REVIEW BOUNDARY is established around disposal systems midway between the Compliance Boundary and the perimeter of the waste disposal area. When the concentration of any substance equals or exceeds the maximum allowable concentration of that substance at the REVIEW BOUNDARY, as determined by monitoring, the permittee shall either (i) demonstrate, through predictive calculations or modeling, that natural site conditions, facility design and operational controls will prevent a violation of standards at the Compliance Boundary; or, (ii) submit a plan for the alteration of existing site conditions, facility design or operational controls that will prevent a violation of standards at the Compliance Boundary, and implement that plan upon its approval by the Director. 3. Any additional groundwater quality monitoring as deemed necessary by the Division of Environmental Management shall be provided. 1. Adequate inspection, maintenance, and cleaning shall be provided by the Permittee to insure proper operation of the subject facilities. 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 three years from the date of the inspection and shall be made available upon request to the Division of Environmental Management or other permitting authority. 3. Additional reports on the operations of the treatment and disposal facilities shall be submitted to the Washington Regional Office at regular intervals and in such form and detail as may be required by this Division. 4. Any duly authorized officer, employee, or representative of the Division of Environmental Management may, upon presentation of credentials, enter and inspect any property, premises or place on or related to the disposal site and facility at any reasonable time for the purpose of determining compliance with this permit; may inspect or copy any records that must be kept under the terms and conditions of this permit; or may obtain samples of groundwater, surface water, or leachate. l . This permit shall become voidable unless the facilities are constructed in accordance with the conditions of this permit, the approved plans, specifications and other supporting data. 2. This permit is effective only with respect to the nature and volume of wastes described in the application and other supporting data. This permit is not transferable. 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 of Environmental Management accompanied by an application fee, 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. 4. The subject wastewater treatment and disposal facilities shall be connected to an operational publicly owned wastewater collection system within 180 days of its availability to the subject facilities, if the subject wastewater treatment or disposal facilities are in noncompliance with the terms and conditions of this non -discharge permit or the governing statutes or regulations. Prior to the initiation of these connection activities, appropriate approval must be received from this Division. 5. The annual administering and compliance fee must be paid by the Permittee within thirty (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 as specified by 15 NCAC 2H .0205 (c)(4). 6. Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to an enforcement action by the Division of Environmental Management in accordance with North Carolina General Statute 143-215.6A to 143-215.6C. 7. The issuance of this permit does not preclude 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) which have jurisdiction. 8. A set of approved plans and specifications for the subject project must be retained by the Permittee for the life of this project. 9. The Permittee, at least six (6) months prior to the expiration of this permit, shall request its extension. Upon receipt of the request, the Commission will review the adequacy of the facilities described therein, and if warranted, will extend the permit for such period of time and under such conditions and limitations as it may deem appropriate. 10. Two (2) weeks prior to system start-up, the Permittee shall notify the Division of Environmental Management, Washington Regional Office, that operation is about to commence. 11. The permittee shall begin construction of this upgraded facility within sixty (60) days of the thirty (30) day average exceedance of 80 percent of the design capacity of the plant currently in operation. Eighty (80) percent of the design capacity is 40,000 gpd, therefore, 83 bedrooms at 120 gallons/bedroom is the allowable connections to be made once 40,000 gpd is reached. Any additional connections made to this facility will be a violation of North Carolina General Statute 143-215.1 and is enforceable by the Environmental Management Commission. 12. The thirty (30) day average of 220,000 gpd shall not be exceeded. Permit issued this the 23rd day of January, 1992 CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION --George T. Ever Director Division of Envir ental IM age ent By Authority of the EnviroManagement Commission ERMIT NO. WQ0002284 Permit No. WQ0002284 January 23, 1992 I s• 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 for the Permittee hereby state that, to the best of my 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 the approved plans and specifications. 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