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HomeMy WebLinkAboutWQ0001759_Final Permit_20060717State of North Carolina Department of Environment, Health and Natural Resources • • Division of Environmental Management James B. Hunt, Jr., Governor Jonathan B. Howes, Secretary ID E ---[ N A. Preston Howard, Jr., P.E., Director July 17, 1996 Mr. Jack King, City Manager City of Statesville P.O. Box 1111 Statesville, NC 28687-1111 Subject: Permit No. WQ0001759 City of Statesville, Fourth Creek Monofill Surface Disposal of Wastewater Residuals Iredeil County Dear Mr- King: In accordance with the request dated January 18, 1996, a draft permit and the subsequent acceptance of this draft by the City of Statesville by letter dated June 24, 1996, we are forwarding herewith Permit No. WQ0001759, dated July 17, 1996, to the City of Statesville for continuing operation of a surface disposal site for the purpose of the disposal of wastewater residuals with temporary storage of dewatered residuals allowed at the surface disposal site on recognized holidays, weekends and after normal business hours. The facility must comply with federal and state requirements for the collection of all runoff from the surface disposal site (as outlined in 40 CFR Part 503.24 (g) (1) and (2)). A site visit, conducted on February 21, 1996, revealed that the berm currently -in place around the active area of the surface disposal site was not adequate to meet the requirements specified above. The attached permit contains revised conditions (namely, conditions I.6 and I.7) which allow the temporary stockpiling of residuals near an active sewage sludge unit, contingent upon proper containment or collection of all runoff. When the proper containment or collection system has been installed at the facility, the Mooresville Regional Office, telephone number (704) 663-1699, shall be contacted so that a follow-up inspection can be conducted to assess the adequacy of the system. This permit shall be effective from the date of issuance until November 30, 2000 shall void Permit No. WQ0001759 issued December 20, 1995, and shall be subject to the conditions and limitations as specified therein. Please pay particular attention to the monitoring and reporting requirements contained in this permit. Failure to establish an adequate system for collecting and maintaining the required operational information will result in future compliance problems. The City of Statesville has reviewed and accepted a draft of this permit, therefore, this permit is final and binding. P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone 919-733-7015 FAX 919-733-2496 An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper If you need additional information concerning this matter, please contact Ms. Carolyn McCaskill at (919) 733-5083 ext. 540 or Mr. Matt Williams at ext. 5W Sincerely, Oc A. Presto Howard, 7 ., P.E. Iredell County Health Department Mooresville Regional Office, Water Quality Section Mooresville Regional Office, Groundwater Section Bob Cheek, Groundwater Section, Central Office Training and Certification Unit (no revised rating) Facilities Assessment Unit NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES RALEIGH SURFACE DISPOSAL 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 THE City of Statesville Iredell County FOR THE continued operation of a surface disposal site at the Fourth Creek wastewater treatment facility consisting of a monofill with an area of approximately 9.4 acres, with trenches 80-100 feet long and 10 feet deep for the disposal (by complete burial) of approximately 1,200 dry tons per year of residuals from the Fourth Creek wastewater treatment facility, approximately 930 dry tons per year of residuals from the'Third Creek wastewater treatment facility and approximately 160 dry tons per year of residuals from the City of Statesville water treatment facility with no discharge of wastes to the surface waters, pursuant to the renewal request received on August 30, 1995, 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 November 30, 2000, shall void Permit No. WQ0001759 issued December 20, 1995, and shall be subject to the following specified conditions and lbuitations- I. PERFORMANCE STANDARDS 1. The sewage sludge units shall be effectively maintained and operated as a non -discharge system to prevent the discharge of any wastes resulting from the operation of this program. 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 program. 3. In the event that any sewage sludge unit is not operated satisfactorily, including the creation of he conditions, the Permittee shall cease disposing of the wastewater residuals to the sewage sludge unit and take any immediate corrective actions as may be required by the Division. 4. The following buffer zones shall be maintained: a. 400 feet from any habitable residence, b. 100 feet between an active sewage sludge unit and any public or private water supply source, all streams classified as WS or B, waters classified as SA or SB and any Class I or Class 11 impounded reservoir used as a source of drinking water, c. 100 feet between an active sewage sludge unit and any stream, lake, river, or natural drainage way, d _ 50 feet between an active sewage sludge unit and property lines (if the original permit was issued with the buffer distance to property line as 100 feet, updated maps must be submitted and new acreage delineated for the buffer to be reduced), e. 10 feet between an active sewage sludge unit and any interceptor drains or surface water diversions (upsiope), f. 25 feet between an active sewage sludge unit and any interceptor drains or surface water diversions (downslope), g. 25 feet between an active sewage sludge unit and any groundwater lowering and surface drainage ditches. Some of the buffers specified above may not have been included in previous permits for this surface disposal site. These buffers are not intended to prohibit or prevent modifications, which are required and approved by the Division, to improve performance of the existing disposal facility. These buffers do apply, however, to any expansion or modification of the surface disposal site, and apply in instances in which the sale of property would cause any of the buffers now complied with, for the disposal facilities, to be violated. The applicant is advised that any modifications to the existing facilities will require a permit modification. 5. A copy of this permit shall be maintained at the surface disposal site when residuals are being disposed during the life of this permit. A spill prevention and control plan shall be maintained in all residuals transport and application vehicles. 6. Residuals placed in a subject sewage sludge unit shall be covered with soil or other material at the end of each operating day. Residuals generated at times other than regular business hours shall be covered as soon as proper personnel are available to do so. At no time shall residuals remain uncovered for more than five consecutive days. 7. No residuals shall be stored on site at any time, unless approval has been requested and obtained from the Division of Environmental Management. Residuals generated at times other than regular business hours may be temporarily stockpiled in the vicinity of the active sewage sludge unit provided all leachate is either contained on site or collected and routed to the head of the wastewater treatment plant.. The temporary stockpile shall not exceed 20 dry tons at any time, nor remain for more than five consecutive days. S. Disposal (or any application) of residuals which test, or are classified, as hazardous or toxic waste as defined in 40 CFR Part 261 is expressly prohibited at this site. I1. OPERATION AND MAINTENANCE REQUIREMENTS I. The facilities and sewage sludge sites shall be properly maintained and operated at all times. 2. No residuals other than the following are hereby approved for disposal in the sewage sludge units in accordance with this permit: Permit Estimated Source County Number,. ._ Vol ume(dry tons/ year) Fourth Creek WWTP Iredell NCO031836 I,200 Third Creek WWTP Iredell NCO020591 930 Statesville WTP Iredell 160 3. The pollutant concentrations in the residuals which will be disposed in sewage sludge unit shall not exceed the following Ceiling Concentrations (Dry Weight Basis): Parameters _ --m--Jkjz Arsenic 39 Chromium 260 Nickel 270 4. Upon classification of the facility by the Certification Commission, the Permittee shall employ a certified operator to be in responsible charge (4RC) of the active sewage sludge unit. The operator must hold a certificate of the type classification assigned to the sewage sludge unit by the Certification Commission. The Permittee must also employ a certified back-up operator of the appropriate type to comply with the conditions. of Title 15A NCAC 8A, .0202. 5. Adequate procedures shall be provided to prevent any surface runoff from occurring at any active sewage sludge unit. If runoff cannot be prevented, a collection system shall be installed with the capacity to handle runoff from a 24-hour, 25-year storm event. All collected runoff shall be disposed in a manner approved by the North Carolina Division of Environmental Management. 6. An active sewage sludge unit shall not restrict the flow of a base flood. 7. An active sewage sludge unit shall not be located in an unstable area. Appropriate measures must be taken to control public access to the surface disposal site during active site use and for the 36-months following closure of the sewage sludge unit. Such controls may include fencing and the posting of signs indicating the activities being conducted at each site. 9. Adequate provisions shall be taken to prevent wind erosion from conveying pollutants from the surface disposal site onto the adjacent property or into any surface waters. 10. Application rates to this surface disposal site shall not exceed 91,000 cubic feet per year. 11. Food crops, feed crops and fiber crops shall not be grown on an active sewage sludge unit, unless approval has been requested and received from the Division of Environmental Management. 12. Animals shall not be grazed on an active sewage sludge unit unless approval has been requested and received from the Division of Environmental Management. ki III. MONITORING AND REPORTING REQUIREMENTS Any monitoring (including groundwater, surface water, residuals, soil, or plant tissue analyses) deemed necessary by the Division of Environmental Management to insure protection of the environment will be established and an acceptable sampling and reporting schedule shall be followed. 2. Proper records shall be maintained by the Permittee tracking all application activities. These records shall include, but are not necessarily limited to the following information: a. source of residuals b . volume of residuals disposed in gallons/year, dry tons/year, or kilograms/year 3. A residuals analysis shall be conducted quarterly from the date of permit issuance for the residuals from the Third Creek and Fourth Creek wastewater treatment facilities, and annually for the residuals from the water treatment plant. The analyses shall be the responsibility of the Permittee and the results shall be maintained on file by the Permittee for a minimum of five years. If disposal of residuals from either of these facilities at the subject site occurs at a frequency less than quarterly, a residuals analysis will be required for each instance of land application for the applicable facility. The residuals analysis shall include but is not necessarily limited to the following parameters: Arsenic % Total Solids Chromium pH Nickel After the residuals have been monitored for two years at the above frequency, the Permittee may submit a request to the Division for a permit modification for the reduction of the frequency of monitoring for pollutant concentrations and for the pathogen density requirements, but in no case shall the frequency of monitoring be less than once per year when residuals are applied to the land. 4. A Toxicity Characteristics Leaching Procedure (TCLP) analysis shall be conducted by the Permittee annually for the residuals from each of the wastewater treatment facilities. This requirement does not apply to the residuals from the water treatment plant. The TCLP analysis shall include the following parameters (please note the regulatory level in mg/L in parentheses): Arsenic (5.0) Barium (100.0) Benzene (0.5) Cadmium (1.0) Carbon tetrachloride (0.5) Chlordane (0.03) Chlorobenzene (100.0) Chloroform (6.0) Chromium (5.0) o-Cresol (200.0) m-Cresol (200.0) p-Cresol (200.0) Cresol (200.0) 2,4-D (10.0) 1,4-Dichlorobenzene (7.5) 1,2-Dichloroethane (0.5) 1,1-Dichloroethylene (0.7) 2,4-Dinitrotoluene (0.13) Endrin (0.02) Heptachlor (and its hydroxide) (0.008) Hexachlorobenzene (0.13) Hexachloro-1,3-butadiene (0.5) Hexachloroethane (3.0) Lead (5.0) Lindane (0.4) Mercury (0.2) Methoxychlor (10.0) Methyl ethyl ketone (200.0) Nitrobenzene (2.0) Pentachlorophenol (100.0) Pyridine (5.0) Selenium (1.0) Silver (5.0) Tetrachloroethylene (0.7) Toxaphene (0.5) Trichloroethylene (0.5) 2,4,5-Trichlorophenol (400.0) 2,4,6-Trichlorophenol (2.0) 2,4,5-TP (Silvex) (1.0) Vinyl chloride (0.2) 4 5. The EPA certification statements concerning compliance with pathogen requirements, vector attraction reduction requirements and management practices must be completed quarterly by the proper authority or authorities if more than one is involved, either the person who prepares the residuals, the person who derives the material, or the person who applies the residuals. After the residuals have been monitored for two years at the above frequency, the Permittee may request a permit modification for the reduction of the frequency of monitoring for pollutant concentrations and for the pathogen density requirements, but in no case shall the frequency of monitoring be less than once per year when residuals are applied to the land. 6. Three copies of all required monitoring and reporting requirements as specified in conditions 1111, 1112,1113,1I14, and 1115 shall be submitted annually on or before March 1 of the following year to the following address: NC Division of Environmental Management Water Quality Section Facility Assessment Unit PO Box 29535 Raleigh, NC 27626-0535 7. The air in all structures within the surface disposal site and the air at the property line shall be continuously monitored for methane gas. The following criteria shall be met: • In structures: the concentration of methane gas in the air shall not exceed 25% of the lower explosive limit (LEL) for methane gas. • At the property line: the concentration of methane gas in the air shall not exceed the lower explosive limit (LEL) for methane gas. 8. Noncompliance Notification: The Permittee shall report by telephone to the Mooresville Regional Office, telephone number (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 with the surface disposal program which results in the disposal of significant amounts of wastes which are abnormal in quantity or characteristic. b. Any failure of the surface disposal program resulting in a release of material to receiving waters. c. Any time that self -monitoring information indicates that the facility has gone out of compliance with the conditions and limitations of this permit or the parameters on which the system was designed. d. Any process unit failure, due to known or unknown reasons, that render the facility incapable of adequate residual treatment. e. Any spillage or discharge from a vehicle or piping system transporting residuals to the disposal site. 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 The three (3) existing monitor wells (numbers 1, 2 and 3) shown on the attached site map, must be sampled every March, July and November for the following parameters: NO3 TDS TOC pH Ammonia Nitrogen Chloride Water Level Fecal Coliforms Cadmium Zinc Copper 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 ed., 1989 Method 2: Method 502.2 "Methods For The Determination Of Organic Compounds In Drinking Water", U.S. EPA-600/4-88/039 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. If any volatile organic compounds are detected by Method 6230D, or the equivalent Method 502.2, then the Mooresville Regional Office Groundwater Supervisor, telephone number (704) 663-1699, 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 results of the sampling and analysis shall be sent to the Groundwater Section, Permits and Compliance Unit, P.O. Box 29535 Raleigh, N.C. 27626-0535 on Form GW-59 [Compliance Monitoring Report Form] every April, August and December. 2. 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). 111 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. 3. Any additional groundwater quality monitoring, as deemed necessary by the Division, shall be provided. V . INSPECTIONS 1. The Permittee or his designee shall inspect the residuals storage, transport, 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 five years from the date of the inspection and shall be made available to the Division of Environmental Management or other permitting authority, upon request. 2. 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 surface 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 kept under the terms and conditions of this permit; and may obtain samples of groundwater, surface water, or leachate. V I. GENERAL CONDITIONS 1. This permit shall become voidable unless the surface disposal activities are carried out in accordance with the conditions of this permit, the supporting materials, and in the manner approved by this Division. 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 automatically transferable. In the event that there is a desire for the facilities to change ownership or 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. 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(a) to 143-215.6(c). 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. 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. 7. 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. 8. This permit may be modified, or revoked and reissued to incorporate any conditions, limitations and monitoring requirements the Division of Environmental Management deems necessary in order to adequately protect the environment and public health. 9. The Division must be notified in writing at least 180 days prior to closing of the surface disposal site. A formal closure plan shall be required to be submitted at that time. Permit issued this the 17th day of July, 1996 NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION A. Prestopoward, Jr.,TE., Director Division nvironmental Management By Authority of the Environmental Management Commission Permit Number WQ0001759