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HomeMy WebLinkAboutNC0085359_Permit (Modification)_19980313NPDES DOCIMENT SCANNING COVER SHEET NPDES Permit: NC0085839 Twelve Mile Creek WWTP Document Type: Permit Issuance Wasteload Allocation Authorization to Construct (AtC) Permit Modification Complete File - Historical Engineering Alternatives (EAA) Correspondence Owner Name Change Instream Assessment (67b) Speculative Limits Environmental Assessment (EA) Document Date: March 13, 1998 Min document is printed on reuse paper - ignore any content on the reYerse side State of North Carolina Department of Environment and Natural Resources Division of Water Quality James B. Hunt, Jr., Governor Wayne McDevitt, Secretary A. Preston Howard, Jr., P.E., Director March 13, 1998 Mr. Mike Shalati Union County Public Works Department P.O. Box 987 Monroe, North Carolina 28111 D E R Subject: NPDES Permit Modification NPDES Permit No. NC0085359 Twelve Mile Creek WWTP Union County Dear Mr. Shalati: The Division received your request for a modification of the subject permit on January 20, 1998. After a review of your request by the NPDES staff, the Division has approved this modification. The months of toxicity sampling have been changed as you requested. The limit for total residual chlorine has been deleted from the permit, as chlorine is not used at the subject facility. Please find enclosed the revised Effluent Limitations pages and the revised Special Conditions page for toxicity sampling. These pages should be inserted into your permit. The old pages may then be discarded. All other terms and conditions contained in the original permit remain unchanged and in full effect. This permit modification is issued pursuant to the requirements of North Carolina General Statutes 143-215.1 and the Memorandum of Agreement between North Carolina and the U. S. Environmental Protection Agency. If any parts, measurement frequencies or sampling requirements contained in this permit modification are unacceptable to you, you have the right to an adjudicatory hearing upon written request within thirty (30) days following receipt of this letter. This request must be a written petition conforming to Chapter 150B of the North Carolina General Statutes, filed with the Office of Administrative Hearings, Post Office Drawer 27447, Raleigh, North Carolina 27611-7447. Unless such demand is made, this decision shall be final and binding. If you have any questions concerning these permit modifications, please contact Charles Weaver at telephone number (919) 733-5083, extension 511. Sincerely, reston How d Jr. cc. Central Files Mooresville Regional Office, Water Quality Section NPDES Unit Compliance Enforcement Unit Aquatic Toxicology Unit P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone (919) 733-5083 FAX (919) 733-0719 An Equal Opportunity Affirmative Action Employer Charles_Weaver@h2o.enr.state.nc.us A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - SUMMER (April 1 - October 31) Permit No. NC0085359 During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from outfall 001. Such discharges shall be limited and monitored by the Permittee as specified below: EFFLUENT CHARACTERISTICS LIMITS MONITORING REQUIREMENTS Monthly . Average Weekly Average Daily Maximum Measurement Frequency Sample Type Sample Location1 Flow 2.5 MGD Continuous Recording I or E BOD, 5 day, 20°C2 5.0 mg/I 7.5 mg/1 Daily Composite E, I Total Suspended Residue2 30.0 mg/I 45.0 mg/I Daily Composite E, I NH3 as N 2.0 mg/I Daily Composite E Dissolved Oxygen3 Daily Grab E, U, D Fecal Coliform (geometric mean) 200 /100 ml 400 /100 ml Daily Grab E, U, D Temperature4 Daily Grab E, U, D Total Nitrogen (NO2 + NO3 + TKN) Monthly Composite E Total Phosphorus Monthly Composite E 5 Chronic Toxicity � Quarterly Composite E Daily Y Grab E, U, D Footnotes: 1 Sample locations: E - Effluent; I - Influent; U - Upstream 50 feet above the outfall; D - Downstream sampling points D1 + D2; D1 - One -quarter mile below the'outfall, before confluence with the first tributary; D2 - Downstream at NCSR 1301. Upstream and downstream samples shall be grab samples. Stream samples shall be collected three times per week during June, July, August & September and once per week during April & October. 2 The monthly average BOD5 and Total Suspended Residue concentrations shall not exceed 15% of the respective influent value (85% removal). 3 The daily dissolved oxygen effluent concentration shall not be less than 6.0 mg/1. 4 Chronic Toxicity (Ceriodaphnia) P/F at 90%; February, May, August & November (see Part III, Condition F.). The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored weekly at the effluent by grab sample. There shall be no discharge of floating solids or visible foam in other than trace amounts. 1 A.(2) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - WINTER (November 1 - March 31) Permit No. NC0085359 During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from outfall 001. Such discharges shall be limited and monitored by the Permittee as specified below: EFFLUENT CHARACTERISTICS LIMITS MONITORING REQUIREMENTS Monthly Average Weekly Average Daily Maximum Measurement Frequency Sample Type Sample Locations Flow 2.5 MGD Continuous Recording I or E BOD, 5 day, 20°C2 10.0 mg/I 15.0 mg/I Daily Composite E, I Total Suspended Residue2 30.0 mg/I 45.0 mg/I Daily Composite E, I NH3 as N 4.0 mg/I Daily Composite E Dissolved Oxygen3 Daily Grab E, U, D Fecal Coliform (geometric mean) 200 /100 ml 400 /100 ml Daily Grab E, U, D Temperature4 Daily Grab E, U, D Total Nitrogen (NO2 + NO3 + TKN) Monthly Composite E Total Phosphorus Monthly Composite E Chronic Toxicity5 • Quarterly Composite E Conductivity Daily Grab E, U, D Footnotes: 1 Sample locations: E - Effluent; I - Influent; U - Upstream 50 feet above the outfall; D - Downstream sampling points D1 + D2; D1 - One -quarter mile below the outfall, before confluence with the first tributary; D2 - Downstream at NCSR 1301. Upstream and downstream samples shall be grab samples. Stream samples shall be collected once per week. 2 The monthly average BOD5 and Total Suspended Residue concentrations shall not exceed 15% of the respective influent value (85% removal). 3 The daily dissolved oxygen effluent concentration shall not be less than 5.0 mg/1. 4 Chronic Toxicity (Ceriodaphnia) P/F at 90%; February, May, August & November (see Part III, Condition F.). The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored weekly at the effluent by grab sample. There shall be no discharge of floating solids or visible foam in other than trace amounts. ♦ Part III Permit No. NC0085359 F. CHRONIC TOXICITY PASS/FAIL PERMIT LIMIT (Quarterly) The effluent discharge shall at no time exhibit chronic toxicity using test procedures outlined in the "North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised November 1995, or subsequent versions. The effluent concentration at which there may be no observable inhibition of reproduction or significant mortality is 90% (defined as treatment two in the procedure document). The permit holder shall perform quarterly monitoring using this procedure to establish compliance with the permit condition. The tests will be performed during the months of February, May, August, and November Effluent sampling for this testing shall be performed at the NPDES permitted final effluent discharge below all treatment processes. All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge Monitoring Form (MR-1) for the month in which it was performed, using the parameter code TGP3B. Additionally, DWQ Form AT-1 (original) is to be sent to the following address: Environmental Sciences Branch North Carolina Division of Water Quality 4401 Reedy Creek Road Raleigh, North Carolina 27607 Test data shall be complete and accurate and include all supporting chemical/physical measurements performed in association with the toxicity tests, as well as all dose/response data. Total residual chlorine of the effluent toxicity sample must be measured and reported if chlorine is employed for disinfection of the waste stream. Should there be no discharge of flow from the facility during a month in which toxicity monitoring is required, the permittee will complete the information located at the top of the aquatic toxicity (AT) test form indicating the facility name, permit number, pipe number, county, and the month/year of the report with the notation of "No Flow" in the comment area of the form. The report shall be submitted to the Environmental Sciences Branch at the address cited above. Should any single quarterly monitoring indicate a failure to meet specified limits, then monthly monitoring will begin immediately until such time that a single test is passed. Upon passing, this monthly test requirement will revert to quarterly in the months specified above. Should the permittee fail to monitor during a month in which toxicity monitoring is required, .then monthly monitoring will begin immediately until such time that a single test is passed. Upon passing, this monthly test requirement will revert to quarterly in the months specified above. Should any test data from this monitoring requirement or tests performed by the North Carolina Division of Water Quality indicate potential impacts to the receiving stream, this permit may be re- opened and modified to include alternate monitoring requirements or limits. NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism survival, minimum control organism reproduction, and appropriate environmental controls, shall constitute an invalid test and will require immediate follow-up testing to be completed no later than the last day of the month following the month of the initial monitoring. QCL P/F Version 9/96 State of North Carolina Department of Environment, Health and Natural Resources Division of Environmental Management James B. Hunt, Jr., Governor Jonathan B. Howes, Secretary A. Preston Howard, Jr., P.E., Director Mr. Mike Shalati Department of Public Works P.O. Box 987 Monroe, North Carolina 28110 April 12, 1996 Subject: NPDES Permit Issuance Permit No. NC0085359 Twelve Mile Creek WWTP Union County Dear Mr. Shalati: In accordance with the application for a discharge permit received on November 13, 1995, the Division is forwarding herewith the subject NPDES permit. This permit is issued pursuant to the requirements of North Carolina General Statute 143-215.1 and the Memorandum of Agreement between North Carolina and the US Environmental Protection Agency dated December 6,1983. If any parts, measurement frequencies or sampling requirements contained in this permit are unacceptable to you, you have the right to an adjudicatory hearing upon written request within thirty (30) days following receipt of this letter. 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, Post Office Drawer 27447, Raleigh, North Carolina 27611-7447. Unless such demand is made, this decision shall be final and binding. Please take notice this permit is not transferable. Part II, E.4. addresses the requirements to be followed in case of change in ownership or control of this discharge. This permit does not affect the legal requirements to obtain other permits which may be required by the Division of Environmental Management or permits required by the Division of Land Resources, Coastal Area Management Act or any other Federal or Local governmental permit that may be required. If you have any questions concerning this permit, please contact Greg Nizich at telephone number (919) 733-5083, extension 541. Sincerely, Original Signed By D?v;d A. Cnnrlr;Ch A. Preston Howard, Jr., P.E. cc: Central Files Mooresville Regional Office Mr. Roosevelt Childress, EPA Permits and Engineering Unit Facility Assessment Unit P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone 919-733-5083 FAX 919-733-9919 An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper Permit No. NC0085359 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT, HEALTH, AND NATURAL RESOURCES DIVISION OF ENVIRONMENTAL MANAGEMENT PERMIT TO DISCHARGE WASTEWATER UNDER THE NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards and regulations promulgated and adopted by the North Carolina Environmental Management Commission, and the Federal Water Pollution Control Act, as amended, Union County Department of Public Works is hereby authorized to discharge wastewater from a facility located at Twelve Mile Creek Wastewater Treatment Plant on NC Highway 16 West of Monroe Union County to receiving waters designated as Twelve Mile Creek in the Catawba River Basin in accordance with effluent limitations, monitoring requirements, and other conditions set forth in Parts I, II, III, and IV hereof. The permit shall become effective May 1, 1996. This permit and the authorization to discharge shall expire at midnight on April 30, 2001. Signed this day April 12, 1996. `1rgtr►a! Signed By David A. Goodrich A. Preston Howard, Jr., P.E., Director Division of Environmental Management By Authority of the Environmental Management Commission Permit No. NC0085359 SUPPLEMENT TO PERMIT COVER SHEET Union County Department of Public Works is hereby authorized to: 1. Obtain an Authorization to Construct from the Division of Environmental Management for construction of a wastewater treatment facility, and 2. Construct and operate a 2.5 MGD wastewater treatment facility located at the Twelve Mile Creek Wastewater Treatment Plant, on NC Highway 16, West of Monroe, Union County (See Part III of this Permit), and 3. Discharge from said treatment works at the location specified on the attached map into Twelve Mile Creek, classified as C waters in the Catawba River Basin. .r6SO • • ^r/ • a �---- =, "tea 1--- •'-b ‘.. • • r _ - 72n COO F<E1 3910 --aa-arras-ss=a1 3B69 • 1. RD157'30" T1eeE�750N Discharge Point • • 3568 A. (). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS Summer (April 1 - October 31) Permit No. NC0085359 During the period beginning upon the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from outfall(s) serial number 001. Such discharges shall be limited and monitored by the permittee as specified below: )affluent Characteristics Discharge Limitations MonLtoring Requirements Measurement Sample 1Sample Monthly. Avg. Weekly Avq. Daily Max. Frequency Type Location Flow 2.5 MGD Continuous Recording I or E BOD, 5-Day, 20°C2 5.0 mg/I 7.5 mg/I Daily Composite I,E Total Suspended Residue2 30.0 mg/I 45.0 mg/I Daily Composite I,E NH3asN 2.0 mg/I Daily Composite E Dissolved Oxygen3 Daily Grab E,U,D1 Fecal Coliform (geometric mean) 200 /100 ml 400 /100 ml Daily Grab E,U,D1 Total Residual Chlorine 17.0 µg/I Daily Grab E Temperature Daily Grab E,U,D1 Total Nitrogen (NO2 + NO3 + TKN) Monthly Composite E Total Phosphorus Monthly Composite E Chronic Toxicity4 Quarterly Composite E Conductivity Daily Grab E,U,D1 pH5 See note 5 Daily Grab E t Sample locations: E - Effluent, I - Influent, U - Upstream approximately 50 feet above outfall; D = D1 + D2, DI - Downstream 1/4 mile below the outfall (before confluence with first triburary), D2 - Downstream at SR 1301. Upstream and downstream samples shall be grab samples. Stream samples shall be taken three times per week during the months of June, July, August and September, and once per week during the remaining months of the year. 2 The monthly average effluent BOD5 and Total Suspended Residue concentrations shall not exceed 15% of the respective influent value (85 % removal). 3 The daily average dissolved oxygen effluent concentration shall not be less than 6.0 mg/1. 4 Chronic Toxicity (Ceriodaphnia) P/F at 90%; January, April, July and October; See Part III Condition F. 5 The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units. There shall be no discharge of floating solids or visible foam in other than trace amounts. A. (). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS Winter (November 1 - March 31) Permit No. NC0085359 During the period beginning upon the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from outfall(s) serial number 001. Such discharges shall be limited and monitored by the permittee as specified below: Effluent Characteristics Flow BOD, 5-Day, 20°C2 Total Suspended Residue2 NH3 as N Dissolved Oxygen3 Fecal Coliform (geometric mean) Total Residual Chlorine Temperature Total Nitrogen (NO2 + NO3 + TKN) Total Phosphorus Chronic Toxicity4 Conductivity pH5 Discharge Limitations Monthly. Avq. 2.5 MGD 10.0 mg/I 30.0 mg/I 4.0 mg/I 200 /100 ml Measurement Weekly Avq. Daily Max. Frequency Continuous 15.0 mg/I Daily 45.0 mg/I Daily Daily Daily 400 /100 ml Daily 17.0 µg/I Daily Daily Monthly Monthly Quarterly Daily See note 5 Daily Monitoring Requirements Sample 1Sample Typo Location Recording I or E Composite I,E Composite I,E Composite E Grab E,U,D1 Grab E,U,D1 Grab E Grab E,U,D1 Composite E Composite E Composite E Grab E,U,D1 Grab E 1 Sample locations: E - Effluent, I - Influent, U - Upstream approximately 50 feet above outfall; D = D1 + D2, D1 - Downstream 1/4 mile below the outfall (before confluence with first triburary), D2 - Downstream at SR 1301. Upstream and downstream samples shall be grab samples. Stream samples shall be taken three times per week during the months of June, July, August and September, and once per week during the remaining months of the year. 2 The monthly average effluent BOD5 and Total Suspended Residue concentrations shall not exceed 15% of the respective influent value (85 % removal). 3 The daily average dissolved oxygen effluent concentration shall not be less than 5.0 mg/l. 4 Chronic Toxicity (Ceriodaphnia) P/F at 90%; January, April, July and October, See Part III Condition F. 5 The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units. There shall be no discharge of floating solids or visible foam in other than trace amounts. .0 Part III Permit No. NC0085359 F. CHRONIC TOXICITY PASS/FAIL PERMIT LIMIT (QRTRLY) The effluent discharge shall at no time exhibit chronic toxicity using test procedures outlined in: 1.) The North Carolina Ceriodaphnia chronic effluent bioassay procedure (North Carolina Chronic Bioassay Procedure - Revised *September 1989) or subsequent versions. The effluent concentration at which there may be no observable inhibition of reproduction or significant mortality is 90% (defined as treatment two in the North Carolina procedure document). The permit holder shall perform quarterly monitoring using this procedure to establish compliance with the permit condition. The first test will be performed after thirty days from the effective date of this permit during the months of January, April, July and October. Effluent sampling for this testing shall be performed at the NPDES permitted final effluent discharge below all treatment processes. All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge Monitoring Form (MR-1) for the month in which it was performed, using the parameter code TGP3B. Additionally, DEM Form AT-1 (original) is to be sent to the following address: Attention: Environmental Sciences Branch North Carolina Division of Environmental Management 4401 Reedy Creek Road Raleigh, N.C. 27607 Test data shall be complete and accurate and include all supporting chemical/physical measurements performed in association with the toxicity tests, as well as all dose/response data. Total residual chlorine of the effluent toxicity sample must be measured and reported if chlorine is employed for disinfection of the waste stream. Should any single quarterly monitoring indicate a failure to meet specified limits, then monthly monitoring will begin immediately until such time that a single test is passed. Upon passing, this monthly test requirement will revert to quarterly in the months specified above. Should any test data from this monitoring requirement or tests performed by the North Carolina Division of Environmental Management indicate potential impacts to the receiving stream, this permit may be re -opened and modified to include alternate monitoring requirements or limits. NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism survival and appropriate environmental controls, shall constitute an invalid test and will require immediate retesting(within 30 days of initial monitoring event). Failure to submit suitable test results will constitute noncompliance with monitoring requirements.