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HomeMy WebLinkAboutWQ0003044_Final Permit_19900716State 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 July 16, 1990 Mr. Gordon G. Curren, Vice President Summey Building Systems, Incorporated c/o Shannon Properties 7520 East Independence Boulevard - Suite 240 Charlotte, North Carolina 28227 Dear Mr. Curren: George T. Everett, Ph.D. Director Subject: Permit No. WQ0003044 TET Utilities, Inc. Dunescape Villas Wastewater Treatment Facilities and Rotary Distributor Disposal Carteret County In accordance with your application received February 5, 1990, we are forwarding herewith Permit No. WQ0003044, dated July 16, 1990, to TET Utilities, Inc. for the construction of additional wastewater treatment facilities, the modification to the existing wastewater treatment facilities and the continued operation of the collection and disposal facilities. This permit shall be effective from the date of issuance until June 30, 1995, shall void Permit No. 6446 issued September 14, 1981, the amendment issued October 8, 1985, the amendment issued April 19, 1988, 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. Box 11666, Raleigh, NC 27604. Unless such demands are made this permit shall be final and binding. Pollution Prevention Pays P.O. Box 27687, Raleigh, North Carolina 27611-7687 Telephone 919-733-7015 An Equal Opportunity Affirmative Action Employer Mr. Curren page 2 One set of approved plans and specifications is being forwarded to you. if you need additional information concerning this matter, please contact Mr. Mark Hawes at 919/ 733-5083. Sind rely, �U eorge T. Everett cc: Carteret County Health Depw ent Wilmington Regional Office Barrett Kays and Associates Jeff Lauber, Groundwater Section 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 GRAN-TED TO TET UTILITIES, INCORPORATED Carteret County construction and operation of a 70,200 gpd wastewater treatment plant consisting of modifying the existing treatment plant to include a 43,680 gallon aeration basin, a 28,860 gallon flow equalization basin, a 5,680 gallon clarifier, a 15,000 gallon aerated sludge holding tank, two (2) tertiary filters each with a surface area of 16 square feet, a 2,872 gallon mudwell, a 2,872 gallon clearwell combination chlorine contact tank with a tablet type chlorinator, four (4) existing 160 cfm blowers, the modifying of another existing treatment plant to include a 55,000 gallon aeration basin, two (2) 5,850 gallon clarifiers, a 3,750 gallon clear well combination chlorine contact tank with a tablet type chlorinator, a 4,700 gallon mudwell, two (2) tertiary filters each with a surface area of 15 square feet, a 5,082 gallon dosing tank, the continued operation of two (2) existing 65 foot diameter rotary distributors, the construction of a third rotary distributor with a 200 gpm dosing pump and 247 linear feet of 4 inch force main previously approved by Permit No. 6446 issued April 19, 1988, and the continued operation of a 150 gpm influent pump station with dual pumps, and approximately 1,760 linear feet of 8 inch gravity sewer, and all the associated piping, valves, and appurtenances to serve Dunescape Villas with no discharge of wastes to the surface waters, pursuant to the application received February 5, 1990 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 June 30, 1995, and shall void Permit No. 6446 issued April 19, 1988, and shall be subject to the following specified conditions and limitations: 1. PERFORMANCE STANDARDS 1. 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 27687, Raleigh, NC 27611-7687. 2. The Wilmington Regional Office, phone no. (919) 256-4161, 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: 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. 2 11. OPERATION AND MAINTENANCE REQUIREMENTS 1. The facilities shall be properly maintained and operated at al! times. 2. 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 grade at least equivalent to the classification assigned to the wastewater treatment facilities by the Certification Commission. Within thirty days after the wastewater treatment facilities are 50% complete, the Permittee must submit a letter to the Certification Commission which designates the operator in responsible charge. 3. The application rates for the high rate infiltration system shall not exceed 10 gpolsf. 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. Additional raking may be required and should be performed as necessary by the operator. 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 farm 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. III. 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. 3 2. 3. As an indicator of proper operation and maintenance, the each facility shall produce an effluent in compliance with the following limitations: Parameter Monthly Averazea Daily Maximumb Flow 0.72 MGD BOD5 10 mg/l 15 mg/1 NH3 as N 4 mg/l 6 mg/l TSS 20 mg/l 30 mg/l 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 each facility shall be monitored by the Permittee at the point prior to discharge to the rotary distributor for the following parameters:f Location of Measurement Sample Parameter Sampling Points FMqugncy LTe BOD5, 5-day, 20C Effluent *2/Month Composite NH3 as N Effluent *2/Month Composite TSS Effluent *2/Month Composite Fecal Coliform Effluent *2/Month Grab pH Influent, Effluent Daily Grab Flow Influent or Effluent Continuous Recording 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 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. f The Permittee shall monitor the influent and effluent from each wastewater treatment plant for the above specified parameters. The Permittee shall maintain a complete set of monitoring data for each wastewater treatment plant. 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. Three copies of all monitoring data (as specified in condition II1.2) shall be submitted on or before of the last day of the following month to the following address: El NC Division of Environmental Management Water Quality Section Facility Assessment Unit PO Box 27687 Raleigh, NC 27611-7687 4. A record shall be maintained of all sludge 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 sludge, date the sludge was hauled, and volume of sludge 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 d.o. in the aeration basin and clarifier, 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. 6. Noncompliance Notification: The Permittee shall report by telephone to the Wilmington Regional Office, telephone no. (919) 256-4161, 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 directly to receiving waters without treatment 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 pemut 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. R eilNam_ u 1. The three (3) existing monitor wells must be sampled every March, June, September, and December for the following parameters: NO3 (10.0) TDS (500.0) TOC pH ( 6.5-8.5 standard units) Ammonia Nitrogen Chlorides (250.0) Total Fecal Coliforms Water Level Orthophosphate Volatile Organic Compounds - In November 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 relative to mean sea level (M.S.L.). The depth of the water in each well shall be measured from the surveyed point on the top of the casing. The water level elevations shall then be determined relative to (M.S.L.). 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 backgr and 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 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. A 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, July, October, 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 143-215.6(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 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 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 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. 7 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 reasonablc tirne for the purpose of deternuning 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. GEI-LRAL CONDITIONS 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 incorporated 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. 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. 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