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HomeMy WebLinkAboutWQ0004058_Final Permit_19910524State of North Carolina Department of Environment, Health, and Natural Resources Division of Environmental Management 512 North Salisbury Street • Raleigh, North Carolina 27626-0535 James G. Martin, Governor William W. Cobey, Jr., Secretary Mr. William E. Frye Director of Maintenance Stanly County Board of Education Post Office Box 1399 Albemarle, North Carolina 28002-1399 Dear W. Frye: George T. Everett,Ph.D. Director May 24, 1991 Subject: Permit No. WQ0004058 Stanly County Board of Education Ridgecrest Elementary School Subsurface Disposal System Stanly County On November 13, 1990, the Division of Environmental Management issued Permit No. WQ0004058 to the Stanly County Board of Education for the construction and operation of wastewater subsurface disposal facilities to serve Ridgecrest Elementary School. On April 17, 1991, the Division received your letter describing your concerns about some of the conditions in this permit. In order to alleviate any undue burden that may have been created by the subject permit, the Division has evaluated the conditions in this permit and has prepared a modified permit for the construction and operation of the subject 3600 GPD low pressure pipe wastewater subsurface disposal system. Condition H.6 of Permit No. WQ0004058, which was issued on November 13, 1990, required monthly purging and pressure testing on the subsurface laterals. This condition has now been deleted. Condition II1.2 of the modified permit has been reworded to require that the low pressure lines be maintained as necessary in order to ensure that they remain free of obstructing materials and that the pressure head on the laterals remains within the design specifications. The highest and lowest laterals in each subfield must be checked (and adjusted as necessary) annually. If adjustments are necessary to the highest and lowest laterals, thiel- emaui terals in that subfield must also be checked and adjusted to the approved specifications. Additionally, the inspection frequency on several other items specified in this condition has been relaxed. Condition 11.2 was inadvertently omitted from Permit No. WQ0004058, which was issued on November 13, 1990. This condition has been incorporated into the permit. Condition 11.6 has been reworded to require that the fields be routinely mowed and that the clippings be periodically removed. As you can see, the modified permit does not completely eliminate the necessity for maintaining a method of checking the pressure heads on the laterals, however, the requirement is now annually rather than monthly and it is possible that only the highest and lowest laterals on a subfield would have to be checked. The burden is on the Stanly County Board of Education to maintain the capability to check the pressure head as specified in the permit. One possibility would be to place the end of each lateral in a box underground which can be easily located in some manner (metal detector, etc.) or you may wish to leave the highest and lowest laterals flush with the ground and obtain a locking lid. Pollution Prevention Pays P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone 919-733-7015 An Equal Opportunity Affirmative Action Employer This permit shall be effective from the date of issuance until October 31, 1995, shall void Permit No. WQ0004058, which was issued on November 13, 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 modification 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 the 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. One set of approved plans and specifications was previously �; ,Y aided to you. If you need additional information concerning this matter, please contact Mr. Randy Jones at 9191 733-5083. Sinc rely, eorge T. Ever tt cc: Stanly County Health Department Mooresville Regional Office Groundwater Section Training and Certification Unit (no revised rating) Mr. J. Thurman Horne, P.E. NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION DEPARTMENT OF ENVIRONMENT, HEALTH, AND NATURAL RESOURCES RALEIGH SUBSURFACE DISPOSAL 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 Stanly County Board of Education Stanly County FOR THE construction and operation of a 3,600 GPD wastewater subsurface disposal system consisting of an existing grease trap, an existing 5,300 gallon septic tank, a 145 GPM pump tank with dual submersible pumps and high water alarms, dual 4 -inch force mains approximately 660 linear feet and 800 linear feet, 2,800 linear feet of 1.25 -inch distribution lines ( total of 14,400 square feet at 5 feet between laterals) and associated valves, piping and appurtenances to serve Ridgecrest Elementary School with no discharge of wastes to the surface waters, pursuant to the modification request received on April 17, 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 October 31, 1995, shall void Permit No. WQ0004058, which was issued on November 13, 1990, and shall be subject to the following specified conditions and limitations: llffillffjl§' !, 1 ! 1. The Mooresville Regional Office, phone no. 704/ 663-1699, shall be notified at least forty-eight (48) hours in advance of backfilling 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. 2. In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions, the Permittee shall take immediate corrective action, including those as may be required by this Division, such as construction of additional or replacement wastewater treatment or disposal facilities. 3. 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. 1 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. 5. Adequate measures shall be taken to divert stormwater from the disposal area and prevent wastewater runoff from the subsurface disposal field. b. 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. 7. A usable reserve area shall be maintained for wastewater disposal. The reserve area shall have the capability of accommodating the average daily flow of the facility being served without exceeding the loading rates of the reserve area while meeting all required buffer requirements. 8. Diversion or bypassing of the untreated wastewater from the treatment facilities is prohibited. 9. The following buffers shall be maintained: a) 100 feet between disposal area and any public or private water supply including wells b) 100 feet between disposal area and "SA and SB" classified surface waters c) 50 feet between disposal area and any stream, lake, river or natural drainageway d) 50 feet between disposal area and property lines e) 10 feet between disposal area and surface water interceptor drains or diversions (upslope) f) 25 feet between disposal area and surface water interceptor drains or diversions (downslope) and groundwater drainage systems. 10. A leakage test shall be performed on the septic tank and dosing tank to insure that any exfiltration occurs at a rate which does not exceed twenty (20) gallons per twenty-four (24) hours per 1,000 gallons of tank capacity. The engineer's certification will serve as proof of compliance with this condition. 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 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 application rates to the disposal field shall not exceed 0.25 GPD per square foot. 2 4. The facilities shall be effectively maintained and operated as a non -discharge system to prevent the discharge of any wastewater resulting from the operation of this facility. 5. No traffic or equipment shall be allowed on the disposal area except while installation occurs or while normal maintenance is being performed. 6. A suitable cover shall be maintained on the LPP field(s) and the field(s) shall be routinely mowed. The clippings shall be periodically removed to prevent the build-up of thatch. III. MONITORING_AND REPORTING REQUIREMENTS 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. The low pressure lines shall be maintained as necessary (including purging of the lines and pressure testing) in order to ensure that they remain free of obstructing materials and that the pressure head on the laterals remains within the design specifications. The highest and lowest laterals on each subfield shall be checked (and adjusted as necessary) annually to ensure that the pressure heads are within the approved specifications. If adjustments are necessary to the highest and lowest laterals, the remaining laterals in that subfield shall also be checked and adjusted to the approved specifications. Adequate records showing all maintenance shall be maintained by the Permittee. These records should include but are not limited to the following: Items Inspection Frequency a) Individual dosing pump operation. Monthly b) Individual field rotation. Monthly c) High water alarms Monthly d) Residual pressure on highest and lowest lateral on each subfield Annually 3. Three copies of all operation and maintenance records (as specified in condition III 2) shall be submitted on or before January 31 of the following-leseft 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 sludge removed from this facility. This record shall include the name of the hauler, permit authorizing the disposal or a letter from a municipality agreeing to accept the sludge, date the sludge was hauled, and volume of sludge removed. 3 5. Noncompliance Notification: The Permittee shall report by telephone to the Mooresville Regional Office, telephone no. 704/ 663-1699, 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 resultingin 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 has gone out of 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. 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 Pezinittee 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. 4 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. !2 W13111►f.� 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 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. Prior to any transfer of this land, a notice shall be given to the new owner that gives full details of the materials applied or incorporated at this site. 5. A set of approved plans and specifications for the subject project must be retained by the applicant for the life of the project. 6. 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). 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 S�215,_. 8. The 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 system shall cease at the time of the connection to the sewerage collection system. 9. 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. 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. 5 Permit issued this the 24th day of May, 1991. CAROLINA eeorge T. Everett,t Division of Environ By Authority of the AL MANAGEMENT COMMISSION Management Commission 6