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HomeMy WebLinkAboutWQ0005173_Final Permit_19910923State 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 September 23, I991 Ms. Daisy Spell, Property Manager Cape Emerald Master Association 8810 Emerald Drive Emerald Isle, North Carolina 28594 George T. Everett, Ph.D Director Subject: Permit No. WQ0005173 Cape Emerald Master Association Cape Emerald Subdivision High Rate Infiltration Carteret County Dear Ms. Spell: In accordance with your application received May 23, 1991, we are forwarding herewith Pemtit No. WQ0005173, dated September 23, 1991, to Cape Emerald Master Association for the continued operation of the subject wastewater collection, treatment, and high rate infiltration facility. This permit shall be effective from the date of issuance until August 31, 1996, and shall supersede Permit No. 13869 issued December 4, 1986, and Permit No. I3869 issued November 3, 1986, 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 Affirntative Action Employer Ms. Spell September 23, 1991 Page Two If you need additional information concerning this matter, please contact Mark Hawes at 919/ 733- 5083. S111 erely, eorge T. cc: Carteret County Health Department Wilmington Regional Office Groundwater Section Training and Certification Unit Facilities Assessment Unit 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 Cape Emerald Master Association Carteret County FOR THE continued operation a 50,000 gpd wastewater treatment facility consisting of a bar screen, a 10,000 gallon aerated flow equalization tank with dual submersible 35 gpm pumps and high water alarms and dual 100 cfm blowers, a flow splitter box, dual 25,000 gallon aeration tanks, dual 2,500 gallon aerated sludge holding tanks, dual 4,765 gallon clarifiers, dual 270 cfm blowers, dual tertiary filters each with an area of 18 square feet, a 2,700 gallon clear well, a 2,890 gallon mud well, dual 270 gpm bask wash pumps, dual 18 gpm back wash return pumps, a 1,380 gallon chlorine contact tank, dual tablet type chlorinators, an 8,500 gallon dosing tank with dual 85 gpm dosing pumps and high water alarms, two rotary distributors each with a diameter of 80 feet, a 30 kW auxiliary power generator to serve the treatment facility and a 10 kW portable auxiliary power generator to serve the pump stations and all the associated piping, valves, and appurtenances to serve Cape Emerald Subdivision with no discharge of wastes to the surface waters, pursuant to the application received May 23, 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 August 31, 1996, and shall supersede Permit No. 13869 issued December 4, 1986, and Permit No. 13869 issued November 3, 1986, and shall be subject to the following specified conditions and limitations: I. PERFORMANCE STANDARDS 1. In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions, the Permitwe 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. 2. 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. 3. 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. 4. Adequate measures shall be taken to divert stormwater from the high rate infiltration area and to prevent wastewater runoff. 5. Diversion or bypassing of the untreated wastewater from the treatment facilities is prohibited. 6. 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. 7. The following buffers shall be maintained: 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. 8. 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. H. OPERATION AND MAINTENANCE REQUIREMENTS 1. The facilities shall be properly maintained and operated at all times. 2. Upon classification of the facility by the Certification Commission, the Permittee shall employ a certified wastewater treatment plaint operator to be in responsible charge of the wastewater treatment facilities. The operator must hold a certificate of the type and grade at Ieast equivalent to the classification assigned to the wastewater treatment facilities by the Certification Commission. 3. The application rates for the high rate infiltration system shall not exceed 5 gpd/sf. 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 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 stand by 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. 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 pennittee. 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. MONITORING AND REPORTING REQUIREMENTS 1. 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. 2. As an indicator of proper operation and maintenance, the facility shall produce an effluent in compliance with the following limitations: Parameter Monthly Averaged Daily Maximumb Flow 0.050 MGD 0.075 MGD BODS 10 mg/l 15 mg/1 NH3 as N 4 mg/1 b mg/l TSS 20 mg/1 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: Parameter BODS, 5-day, 20C NH3 as N TSS Fecal Coliform Settleable Matter Flow Residual Chlorine NO3 TDS TOC Chloride Location of Measurement Sample Sampling, Points Frequency Type Effluent *2/Month Composite Effluent *2/Month Composite Effluent *2/Month Composite Effluent *2/Month Grab Effluent *2/Month Grab Influent or Effluent Continuous Recording Effluent Daily Grab Effluent **Triannually Grab Effluent **Triannually Grab Effluent **Triannually Grab 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. **Triannual sampling frequency shall correspond with triannual monitoring of wells required by Groundwater monitoring conditions. 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 III.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. 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. 5. 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. f. Dates fields were raked and arms inspected. 4 6. Noncompliance Notification: The Permittee shall report by telephone to the Wilmington Regional Office, telephone no. (919) 395-3900, 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 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. IV. GROUNDWATER REQUIREMENTS 1. The three onsite monitoring wells shall be sampled every March, July, and November for the following parameters: NO3 (10.0) TOC Ammonia Nitrogen Water Level Total Suspended Solids Volatile Organic Compounds below) TDS (500.0) pH (6.5-8.5 standard units) Chloride (250.0) Fecal Coliforms (1/100 ml) In November only (by Method I or Method 2 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. The numbers in parentheses represent the maximum allowable concentrations in groundwater for the various analytical parameters, as specified in 15 NCAC 2L [Groundwater Classifications and Standards]. Unless otherwise noted, the concentrations are given in parts per million. 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 $ickground 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 GW-59 (Compliance Monitoring Report Form) every April, August, and December. 2. The Compliance Bounder 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 143-215.6(1)a. 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 perimeter of waste disposal 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 DEM 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 groundwater quality monitoring as deemed necessary by the Division of Environmental Management shall be provided. V . INSPECTIONS 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 Ieast the date and time of inspection, observations made, and any maintenance, repairs, or corrective actions taken by the Pernaittee. 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. 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. VI. GENERAL CONDITI. NS 1. 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. 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 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. This wastewater treatment facility shall connect to a publicly owned areawide sewage collection system within 180 days of its availability. All discharge of wastewater to the rotary distribution fields shall cease at the time of the connection to the sewerage collection system. 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. Prior to a transfer of this land to a new owner, a notice shall be given to the new owner that gives full details of the materials applied or incorporates[ at this site. 7. 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 143-215.6. 8. 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. 9. A set of approved plans and specifications for the subject project must be retained by the Permittee for the life of this project. 10. 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. 11. The Operational Agreement between the Permittee and the Environmental Management Commission is incorporated herein by reference and is a condition of this Permit. Noncompliance with the terms of the Operational Agreement shall subject the Permittee to all sanctions provided by G. S. 143-215.6 for violation of or failure to act in accordance with the terms and conditions of this Permit. 12. Within 60 days of the reissuance of the permit, the Permittee shall have the stand by power supply converted to an automatically activated stand by power supply. 13. Within 60 days of the reissuance of the permit, the Permittee shall have an acceptable auxiliary power supply to serve the pump stations on site. 14. Within 90 days of the issuance of this permit, the Permittee shall submit an acceptable sludge management plan to the Wilmington Regional Office. 15. Prior to March 31, 1992, the Permittee shall have the tertiary filters refurbished including the installation of an air scour and filter backwash controls. The Permittee shall notify the Wilmington Regional Office in writing when this work has been completed. 16. Within 60 days of the issuance of the permit, the Penmittee shall submit a map identifying the "Green Area" previously approved to the Wilmington Regional Office. Permit issued this the 23rd day of September, 1991 CAROLINA ENVIR George T. Everett, Prirmbr Division of EnvirontRental Man By Authority of the En Permit No. WQ0005173 ITAL MANAGEMENT COMMISSION ent Commission Spoil Area d rj Mud -13 k 130�jcs Hogue A (E) . . . . . . . . . . 0 0 [-4 c W st G S, ion. Fl op El 39 40 f-� 33 44 c 11 MMSM 9