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HomeMy WebLinkAboutWQ0000798_Final Permit_20010330State of North Carolina Department of Environment and Natural Resources Division of Water Quality Michael F. Easley, Governor William G. Ross Jr., Secretary Kerr T. Stevens, Director March 30, 2001 The Honorable Carson Durham, III, Mayor Town of Shallotte Post Office Box 2287 Shallotte, NC 28459 10TWA IT 400 _A&41 2� NCDENR NORTH CAROL{NA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES Subject: Permit No. WQ0000798 Town of Shallotte Wastewater Spray Irrigation Brunswick County Dear Mayor Durham: In accordance with your application received December 22, 1999, we are forwarding herewith Permit No. WQ0000798, dated March 30, 2001, to Town of Shallotte for the continued operation of the subject wastewater treatment and spray irrigation facilities. This permit shall be effective from the date of issuance until February 28, 2006, shall void Permit No. WQ0000798 issued April 12, 1999, and shall be subject to the conditions and limitations as specified therein. Please note that the purpose of this permit issuance is to modify the irrigation application area to include Tract I and Tract H as referenced in the deed (please pay particular attention to the comment noted in Paragraph 1 on the following page concerning sprayheads) dated November 22, 1999 and to restore the now rate to 303, 430 GPD. Please note that the requests for Phase I expansion of Fields 6-9 and increased loading rate of 198,394 GPD could not be granted at this time. Additional information will be necessary in to order approve the Phase I expansion and will be forthcoming. 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, 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, 6714 Mail Service Center, Raleigh, NC 27699-6714. Unless such demands are made this permit shall be final and binding. If you need additional information concerning this matter7Slne2ely,ntact Stephanie Milan at (919) 733- 5083 extension 544. J j KerrT. Stevens cc: Brunswick County Health Department Wilmington Regional Office, Water Quality Section Wilmington Regional Office, Groundwater Section Groundwater Section, Central Office David B. Bowman, P.E., East Coast Engineering Company, P.A. Technical Assistance and Certification Unit Non -Discharge Compliance/Enforcement Unit 1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone (919) 733-5083 Fax(919)715-6M An Equal Opportunity Affirmative Action Employer 50% recycled/10% post -consumer paper NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES RALEIGH SPRAY IRRIGATION 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 Town of Shallotte Brunswick County FOR THE continued operation of a 214,290 GPD (previously permitted as 179,660 GPD, however field ownership was acquired November 22, 1999 and thus 42,858 GPD is restored) wastewater treatment facility with approximately 7,400 linear feet of 8 -inch influent force main, consisting of an influent bar screen, an 11.6 -acre treatment and storage lagoon with a 40 -mil HDPE impermeable liner, effluent trash screen, chlorine contact tank, gaseous chlorine feed system an contact basin for effluent disinfection, dual 820 GPM vertical turbine irrigation pumps with in-line strainers, ultrasonic influent and effluent flow meters, approximately 65.0 acres of spray irrigation fields, excluding the sprayheads highlighted on the enclosed map, and all associated piping and appurtenances, and continued operation of a 89,430 -GPD wastewater treatment facility consisting of an ultrasonic influent flow measurement device, stair -step -type cascade influent paths to dual clay -lined 2.75 -acre facultative lagoons with reserve storage capacity, dual manually -cleaned coarse screens, one manually -cleaned fine -mesh screen for effluent screening, chlorination facilities, a mechanical float -type effluent flow measurement device, dual 400 -GPM effluent irrigation pumps, approximately 14.8 acres of spray irrigation fields, and all associated piping and appurtenances to serve the Town of Shallotte, with no discharge of wastes to the surface waters, pursuant to the application received December 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 February 28, 2006, shall void Permit No. WQ0000798 issued April 12, 1999, and shall be subject to the following specified conditions and limitations: I. PERFORMANCE STANDARDS The spray irrigation facilities shall be effectively maintained and operated at all times so that there is no discharge to the surface waters, nor any contamination of ground waters which will render them unsatisfactory for normal use. In the event that the facilities fail to perforce satisfactorily, including the creation of nuisance conditions or failure of the irrigation area to adequately assimilate the wastewater, 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 and disposal facilities. 2. 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. 3. 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. 4. Diversion or bypassing of the untreated wastewater from the treatment facilities is prohibited. The following buffers shall be maintained: a) 400 feet between wetted area and any residence or places of public assembly under separate ownership, b) 150 feet between wetted area and property Iines, c) 100 feet between wetted area and wells, d) 100 feet between wetted area and drainageways or surface water bodies, e) 50 feet between wetted area and public right of ways, f) 100 feet between wastewater treatment units and wells, and g) 50 feet between wastewater treatment units and property lines. 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 spray irrigation 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. 6. The Permittee shall perform spray irrigation activities per the instructions defined within the operation and maintenance manual provided by the consultant. 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 Water Pollution Control System Operators 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 8G .0202. A suitable year round vegetative cover shall be maintained on the spray irrigation fields. The annual nutrient assimilation capacity of the cover crop shall not be exceeded. 4. Irrigation shall not be performed during inclement weather or when the ground is in a condition that will cause runoff. 5. Adequate measures shall be taken to prevent wastewater runoff from the spray field. 6. 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. 7. Treated wastewater effluent shall be applied only to the following fields and shall not exceed the maximum annual average irrigation rates indicated: Irrigation System Connected to the 89430 -GPD Wastewater Treatment Facility Field Wetted Area Maximum Annual Loading Rate Average Irrigation Rate acres inches per year gallons per day 9 2.0 100.36 14,970 10 5.1 78.00 29,670 11 4.7 78.00 27,340 12 3.0 78.00 17,450 14.8 89,430 Irrigation System Connected to the 214,290 -GPD Wastewater Treatment Facility Field Wetted Area Maximum Annual Loading Rate Average Irrigation Rate acres inches per year gallons per day 1 13.0 44.20 42,858 2 13.0 44.20 42,858 3 13.0 44.20 42,858 4 13.0 44.20 42,858 5 13.0 44.20 42,858 65.0 214,290 8. No type of wastewater other than that from Town of Shallotte shall be sprayed onto the irrigation area. 9. No traffic or equipment shall be allowed on the disposal area except while installation occurs or whil normal maintenance is being performed. 10. Public access to the land application sites shall be controlled during active site use. Such controls may include the posting of signs showing the activities being conducted at each site. 11. Freeboard in the treatment and storage lagoons shall not be less than two feet at any time. 12. Grass cover crops shall be harvested prior to reaching a 12 -inch height. III. MONITORING AND REPORTING REQUIREMENTS 1. Any monitoring (including groundwater, surface water, soil or plant tissue analyses) 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. Adequate records shall be maintained by the Permittee tracking the amount of wastewater disposed. These records shall include, but are not necessarily limited to, the following information: a. date of irrigation, b. volume of wastewater irrigated, c. field irrigated, d. length of time field is irrigated, e. continuous weekly, monthly, and year-to-date hydraulic (incheslacre) loadings for each field, f. weather conditions, and g_ maintenance of cover crops. 3. Influent flow shall be continuously monitored and daily flow values shall be reported on Form NDMR. c The Permittee shall install an appropriate flow measurement device consistent with approved engineering and scientific practices to ensure the accuracy and reliability of influent flow measurement. Flow measurement devices selected shall be capable of measuring flows with a maximum deviation of less than 10 percent from true flow, accurately calibrated at a minimum of once per year, and maintained to ensure that the accuracy of the measurements is consistent with the accepted capability of that type of device. Records of flow measurement device calibration shall be kept on file by the Permittee for a period of at least three years. At a minimum, data to be included in this documentation shall be: a. Date of flow measurement device calibration b. Name of person performing calibration c. Percent from true flow 4. The effluent from the subject facilities shall be monitored by the Permittee at the point prior to irrigation every month for the following parameters: BODS TSS Fecal Coliform NO3/NO2 as N NH3 as N PAN by Calculation TKN The effluent from the each of the subject facilities shall be monitored by the Permittee at the point prior to irrigation every day for the following parameters: Flow pH Residual Chlorine Residual chlorine, fecal coliform, and pH shall be monitored at the point after chlorination. The effluent from the two lagoon treatment systems shall not be mixed. Upstream and downstream monitoring shall be performed on a monthly basis for the following: pH Fecal Coliform Total Nitrogen The upstream monitoring points for the existing spray irrigation facilities shall be located at accessible points on Stinking Will Branch and Charles Branch and at the intersection of Mulberry Branch and Forest Drive Extension for the Phase I expansion facilities_ Downstream monitoring points shall be immediately below the confluence of Charles Branch and Stinking Well Branch for the existing facilities and at the intersection of Mulberry Branch and SR 1348 for the Phase I expansion facilities. Three (3) copies of all operation and disposal records (as specified in condition 1112) on Form NDAR-1 and three (3) copies of all effluent monitoring data (as specified in condition III 3 and III 4) on Form NDMR-1 shall be submitted on or before the last day of the following month. 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 7. A representative annual soils analysis (Standard Soil Fertility Analysis) shall be conducted on each spray field and the results maintained on file by the Permittee for a minimum of five years. The Standard Soil Fertility Analysis shall include, but is not necessarily limited to, the following parameters: Acidity Manganese Potassium Calcium Percent Humic Matter Sodium Copper Magnesium Cation Exchange Capacity 8. Noncompliance Notification: pH Zinc Exchangeable Sodium Percentage Phosphorus Base Saturation (by calculation) The Permittee shall report by telephone to the Wilmington Regional Office, telephone number (910) 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 sludge digester; 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 has gone out of compliance with its permit limitations. Persons reporting such occurrence$ by telephone shall also file a written report in letter form within five (5) 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 Existing monitor wells MW -6, MW -7, MW -8, MW -9, MW -10, MW -11, MW -12, MW -13, and MW -14 shall be sampled every March, July, and November for the following parameters: Water Level pH Chloride Total Dissolved Solids (TDS) Fecal Coliforms Total Organic Carbon (TOC) Nitrate (NO3) Total Ammonia Volatile Organic Compounds - Using one of the following methods: (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 VIII 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 Wilmington Regional Office Groundwater Supervisor, telephone number (910) 395-3900, 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. If TOC concentrations greater than 10 mg/I 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 Iast working day of the month following the sampling month. Any additional groundwater quality monitoring, as deemed necessary by the Division, shall be provided. 5_ 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 exceedanee 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). 6. 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. 7. The application rates shall not exceed those rates specified by the soil scientist. In addition, each field shall be visually monitored during each day of application, and the application rate onto any given field shall be reduced if spray water accumulation is observed at the ground surface. Within ninety days of permit issuance, four copies of a site map shall be furnished to the Division which illustrates and labels all of the sprayfields in use, delineates all of the property boundaries, delineates each sprayhead and its spray radii, shows every storage lagoon, and shows any other significant site features. V. INSPECTIONS 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 Iog 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 or other permitting authority. 6 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 c groundwater, surface water, or leachate. VI. GENERAL CONDITIONS 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. 1n 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. 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. 5. The issuance of this permit does not exempt 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, including but not limited to applicable river buffer rules in 15A NCAC 2B .0200, erosion and sedimentation control requirements in 15A NCAC Ch. 4 and under the Division's Genera Permit NCGO100000, and any requirements pertaining to wetlands under 15A NCAC 2B .0200 and 2H .0500. 6. A set of approved plans and specifications for the subject project must be retained by the Permittee for the life of the project. 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). 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. 9. 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. Permit issued this the 30th day of March, 2001 NORTH' LINA E�N'VIRO NTAL MANAGEMENT COMMISSION Kerr T. Stevens, Director Division of Water Quality By Authority of the Environmental Management Commission Permit Number WQ0000798 Permit No. WQ0000798 March 30, 2001 ENGINEER'S CERTIFICATION Partial Final 1, , 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 Location and County 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 this permit, the approved plans and specifications, and other supporting materials. 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