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HomeMy WebLinkAboutWQ0002284_Final Permit_19990920State of North Carolina Department of Environment and Natural Resources Division of Water Quality James B. Hunt, Jr., Governor Bill Holman, Secretary Kerr T. Stevens, Director September 20, 1999 Mr. Ray Hollowell, Jr., Manager Outer Banks/Kinnakeet Associates, LLC P.O. Box 1411 Manteo, NC 27954 A 11 • • NCDENR NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES Subject_ Permit No. WQ0002284 Outer Banks/Kinnakeet Assocs. Kinnakeet Shores Wastewater Rotary Distributor Facilities Dare County Dear Mr. Hollowell: 1n accordance with your name and ownership change request received June 22, 1999, we are forwarding herewith Permit No. WQ0002284, dated September 20, 1999, to Outer Banks/Kinnakeet Associates, LLC for the operation of the subject wastewater rotary distributor facilities. This permit shall be effective from the date of issuance until September 30, 2001, shall void Permit No. WQ0002284 issued October 17, 1996, 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 the new condition located in Section L, Condition 1.. 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 thirty (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, 6700 Mail Service Center, Raleigh, NC 27699-6700. Unless such demands are made this permit shall be final and binding. If you need additional information concerning this matter, please contact Dianne Thomas at (919) 733-5083 extension 364. Since J { �.�Kerr T. Stevens cc: Dare County Health Department WRO, Water Quality Section WRO, Groundwater Section Groundwater Section, Central Office Technical Assistance and Certification Unit Non -Discharge Compliance/Enforcement Unit 1617 Mail Service Center, Raleigh, NC 27699-1617 Telephone (919) 733-5083 Fax (919) 715-6048 An Equal Opportunity Affirmative Action Employer 50% recycled/10% post -consumer paper NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION DEPARTMENT OF ENVIRONMENT 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 Outer Banks/Kinnakeet Associates, LLC Dare County FOR THE operation of approximately 3,143 linear feet of 8 inch gravity sewer, a 134 GPM pump station with duplex pumps, high water alarms, approximately 3,362 linear feet of 4 inch force main and a rotary distribution treatment and disposal facility consisting of a 50,000 GPD extended aeration wastewater treatment facility, an aerated surge tank with influent bar screen and duplex pumps, 2 parallel diffused air aeration tanks with secondary clarifiers, scum removal, air lift sludge returns, low rate tertiary sand filters, a tablet chlorinator, flow recorder and totalizer, effluent dosing tank, aerated sludge holding tanks, 2 - 80 foot diameter rotary distributors and a standby power supply to serve Kinnakeet Shores, with no discharge of wastes to the surface waters, pursuant to the application received June 22, 1999, 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. This permit shall be effective from the date of issuance until August 31, 2004, shall void Permit No. WQ0002284 issued October 17, 1996, and shall be subject to the following specified conditions and limitations: I. PERFORMANCE STANDARDS Prior to any expansion at this facility, a complete and new hydrogeological study (15A NCAC 2H .0205(d)(10)(B)) must be submitted in order to determine the effects of the dredging operation on site conditions. If the dredging activities have impacted any of the existing wastewater treatment and disposal system, then the new hydrogeological study must be submitted within twelve (12) months of permit issuance in order to determine if the ability of the site to dispose of the permitted 50,000 gpd has been affected. 2. In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions, 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 or disposal facilities. 3. This permit shall become voidable if the soils fail to adequately assimilate 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. The ponding of wastewater on the surface of the distribution field when the dosing cycle commences shall be considered as evidence of failure of the soils to adequately assimilate the wastewater. Additionally, such failure shall be interpreted as a violation of this permit condition. 4. The residuals generated from these treatment facilities must be disposed in accordance with General Statute 143-215.1 and in a manner approved by the Division. Adequate measures shall be taken to divert stormwater_ from the high rate infiltration area and to prevent wastewater runoff. Diversion or bypassing of the untreated wastewater from the treatment facilities is prohibited. The issuanc-- of this permit shall not relieve the Permittee of the responsibility for damages to surface or groundwaters resulting from the operation of this facility. The following buffers shall be maintained: a) 400 feet between high rate infiltration unit and any habitable residence or place of public assembly under separate ownership or which is to be sold, b) 200 feet between high rate infiltration unit and any private or public water supply source and any streams classified as WS or B, c) 200 feet from mean high water between high rate infiltration unit and any "SA" or "SB" classified surface waters, d) 200 feet from normal high water between high rate infiltration unit and any other stream, canal, marsh, or coastal waters, e) 200 feet from normal high water between high rate infiltration unit and any Class I or Class II impounded reservoir used as a source of drinking water, f) 200 feet between high rate infiltration unit and any other lake or impoundment, g) 200 feet between high rate infiltration unit and any Drainage systems (ditches, drains, surface water diversions, etc.) and from any groundwater lowering and surface drainage ditches, h) 100 feet between high rate infiltration unit and property lines, i) 50 feet between treatment units and property lines, and j) 50 feet between high rate infiltration unit and other treatment units and public right of ways. Some of the buffers specified above may not have been included in previous permits for this waste treatment and disposal system. These buffers are not intended to prohibit or prevent modifications, which are required by the Division, to improve performance of the existing treatment facility. These buffers do, however, apply to modifications of the treatment and disposal facilities which are for the purpose of increasing the flow that is tributary to the facility. These buffers do apply to any expansion or modification of the high rate infiltration areas and apply in instances in which the sale of property would cause any of the buffers now complied with, for the treatment and disposal facilities, to be violated. The applicant is advised that any modifications to the existing facilities will require a permit modification. 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 15A 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. II. OPERATION AND MAINTENANCE REQUIREMENTS The facilities shall be properly maintained and operated at all times. 2. Upon classification of the facility by the Water Pollution Control System Operator Certification Commission (WPCSOCC), the Permittee shall employ a certified wastewater treatment plant operator to be in responsible charge (ORC) of the wastewater treatment facilities_ The operator must hold a certificate of the type and grade at least equivalent to or greater than the classification assigned to the wastewater treatment facilities by the WPCSOCC. The Permittee must also employ a certified back-up operator of the appropriate type and grade to- comply with the conditions of 15A NCAC 8G .0202. The ORC of the facility must visit each Class I facility at least weekly and each Class II, III, and IV facility at least daily, excluding weekends and holidays, and must properly manage and document daily operation and maintenance of the facility and must comply with all other conditions of 15A NCAC 8A .0202. 3. The facilities shall be effcctively maintained and operated as a non -discharge system to prevent the discharge of any wastewater outside of the high rate infiltration disposal area, which result from the operation of this facility. 4_ No traffic or equipment shall be allowed on the disposal area except while installation occurs or while normal maintenance is being performed. 5. The rotary distribution fields shall be raked twice weekly during the months April through October and once a week during the months of November through March. 6. The screenings removed from the wastewater treatment plant shall be properly disposed in a sanitary landfill or by other means which have been approved by this Division. 7. Vegetative growth must be kept out of the rotary distribution areas at all times. All vegetation must be removed manually so that minimal disturbance will occur to the disposal area. 8. The application of chemicals to the distribution field(s) is expressly prohibited. 9. 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 the maintenance log 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 unit is operated for the purpose of routine exercising. 10. 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. 11. Diffusers shall be cleaned as needed to ensure that adequate aeration is provided. Records of this maintenance shall be maintained by the permittee. 12. 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. 13_ Chlorine shall be maintained in the chlorinator such that a minimum of 0.5 mg/l of chlorine residual is maintained after 30 minutes of contact time. III. MONITORING AND REPORTING REQUIREMENTS 1. Any monitoring deemed necessary by the Division to insure surface and ground water protection will be established and an acceptable sampling reporting schedule shall be followed. 2. As an indicator of proper operation and maintenance, the facility shall produce an effluent in compliance with the following limitations: Parameter Monthly Average a Daily Maximum Flow (phase 1) 50,000 GPD BOD5 (5-day, 20°C) 10 mg/l 15 mg/l NH3 as N 4 mg/1 6 mg/l TSS 20 mg/1 30 mg/l b Fecal Coliform 14 per 100 ml 43 per 100 ml a Monthly averages for all but fecal coliform shall be the arithmetic mean of all samples collected during the reporting period. b 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. The effluent from the subject facilities shall be monitored, by the Permittee, at the point prior to discharge to the rotary distributors for the following parameters: Parameter _ Sampling Point Sampling Frequency _ Type of Sample Flow Influent or Effluent Continuous Recording BOD5 (5-day, 20°C) Effluent 2/Month Composite NH3 as N Effluent 2/Montb Composite TSS Effluent *2/Month Composite Fecal Coliform Effluent *2/Month Grab Settleable Matter Effluent Daily Grab Residual Chlorine Effluent Daily Grab NO3 Effluent * Triannually Grab TDS Effluent * Triannually Grab TOC Effluent Triannually Grab Chloride Effluent * Triannually 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 shall be monitored monthly. ** Triannually sampling shall be conducted during February, June and October. If Groundwater sampling indicates or predicts problems with compliance with of the Groundwater Standards, this permit will be modified to include additional and/or more restrictive limitations. 4 3. Three (3) copies of all effluent monitoring data (as specified in condition III 2) on Form NDMR-1 shall be submitted on or before the last day of March, July and October. All information shall be submitted to the following address: NC Division of Water Quality Water Quality Section Non -Discharge Compliance/Enforcement Unit 1617 Mail Service Center Raleigh, North Carolina 27699-1617 4. A record shall be maintained of all residuals removed from this facility. The record shall include the name of the hauler, the permit authorizing the disposal or a letter from a municipality agreeing to accept the residuals, the date the residuals were hauled, and the volume of residuals removed. A maintenance log shall be maintained at this facility including, but not limited to, the following items: 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; and f. Dates fields were raked and arras inspected. 6. Noncompliance Notiflcation: The Permittee shall report by telephone to the Washington Regional Office, telephone number (252)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; b. Any process unit failure, due to known or unknown reasons, that renders 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; or 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 five (S) 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. IV. GROUNDWATER REQUIREMENTS I. Monitor wells MWA, MW-2, MW-3 and MW-4 (depicted on the attached maps) shall be sampled every February, June and September for the following parameters: Water Level pH Chloride Total Dissolved Solids (TDS) Fecal Coliforms Total Organic Compounds (TOC) Nitrate (NO3) Ammonia Nitrogen Volatile Organic Compounds - In November only using one of the following: (A) Standard Method 6230D, PQL at 0.5 ug/L or less (B) Standard Method 6210D, PQL at 0.5 ug/L or less (C) EPA Method 8021, Low Concentration, PQL at 0.5 ug/L or less (D) EPA Method 8260, Low Concentration, PQL at 0.5 ug/L or less (E) Another method with prior approval by the Groundwater Section Chief Any method used must meet the following qualifications: (1) A laboratory must be DWQ certified to run any method used. (2) The method used must, at a minimum, include all the constituents listed in Table VHI of Standard Method 6230D. (3) The method used must provided a PQL at 0.5 ug/L or less which must be supported by laboratory proficiency studies as required by the DWQ Laboratory Certification Unit. Any constituents detected above the MDL but below the PQL at 0.5 ug/L must be qualified (estimated) and reported. If any volatile organic compounds are detected by the methods listed, then the Washington Regional Office Groundwater Supervisor, telephone number (252) 946-6481, must be contacted immediately for further instructions regarding any additional follow-up analyses required. The results of all initial and follow-up analyses must be submitted simultaneously. The measurement of water levels must be made prior to sampling for the remaining parameters. The depth to water in each well shall be measured from the surveyed point on the top of the casing. 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. If TOC concentrations greater than 10 mg/1 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. The results of the sampling and analysis must be received on Form GW-59 (Groundwater Quality Monitoring: Compliance Report Form) by the Groundwater Section, Permits and Compliance Unit, 1636 Mail Service Center, Raleigh, N.C. 27699-1636 on or before the last working day of the month following the sampling month. 2. Any additional groundwater quality monitoring, as deemed necessary by the Division, shall be provided. The COMPLIANCE BOUNDARY for the disposal system is specified by regulations in 15A NCAC 2L, Groundwater Classifications and Standards. The Compliance Boundary is for the disposal system constructed after December 31, 1983 is established at either (1) 250 feet from the waste disposal area, or (2) 50 feet within the property boundary, whichever is closest to the waste disposal area. An exceedance of Groundwater Quality Standards at or beyond the Compliance Boundary is subject to immediate remediation action in addition to the penalty provisions applicable under General Statute 143-215.6A(a)(1). In accordance with 15A NCAC 2L, a REVIEW BOUNDARY is established around the disposal systems midway between the Compliance Boundary and the perimeter of the waste disposal area. Any exceedance of standards at the Review Boundary shall require remediation action on the part of the permittee. V. INSPECTIONS L 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 maintain 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 to the Division or other permitting authority, upon request. 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 facility 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. VI. GENERAL CONDITIONS 1. 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. 2. This permit is effective only with respect to the nature and volume of wastes described in the application and other supporting data. 3. 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 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- 7 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 15A 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 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 goVemment 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 Penmittee 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. Permit issued this thR20th day of September 1999 NORTH C' OLINA E IRONMENTAL MANAGEMENT COMMISSION Kerr T. Stevens, Director Division of Water Quality By Authority of the Environmental Management Commission Permit Number WQ0002284 8