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NC0026689_Regional Office Historical File Pre 2016
OTIMA NCDENR North Carolina Department of Environment and Natural Resources Pat McCrory Governor August 26, 2015 Mr. John L. Gray, Interim Town Manager Town of Denton P.O. Box 306 Denton, NC 27239-0306 SUBJECT: Compliance Evaluation Inspection Town of Denton WWTP NPDES Permit #NC0026689 Davidson County Dear Mr. Gray: Donald R. van der Vaart Secretary A compliance Evaluation Inspection was performed at the Town of Denton's WWTP on August 6, 2015 by Jenifer Carter of the Winston-Salem Regional Office. Troy Branch, Operator in Responsible Charge (ORC), was present for the inspection. This type of inspection consists of an in office review of facility records and an on -site inspection of the facility. Noted during the inspection: • Lab data, maintenance logs, ORC visitation logs and calibration records were well organized and complete. • The helisieve was out of service for repairs, with the manual bar screen used as back-up. • There were several improvements made since the last inspection, including new float controls, chlorine/sulfer dioxide detection system and effluent sampler. Mr. Branch continues to maintain all records in excellent order and to operate the plant to its maximum capability. Should you have any questions please contact me at (336) 776-9800. Sincerely, W. Corey Basinger, Regional Supervisor Water Quality Regional Operations Section Division of Water Resources, NC DENR cc: Troy Branch (same address) DWR-Central Files WSRO Files 450 W Hanes Mill Rd., Suite 300, Winston-Salem, NC 27105 Phone: 336-776-98001 Internet: www.ncdenr.gov An Equal Opportunity 1 Affirmative Action Employer — Made in part by recycled paper United States Environmental Protection Agency Form Approved. EPA Washington, D.0 20460 OMB No. 2040-0057 Water Compliance Inspection Report Approval expires 8-31-98 Section A: National Data System Coding (i.e., PCS) Transaction Code NPDES yr/mo/day Inspection Type Inspector Fac Type 1 N 1 2 15 I 3 I NC0026689 111 12 15/08/06 17 18 _ j 19 [ s 20 LJ 211 I I I I I I I I I II I I I I I I I I I I I I I I I I I I I I I I I II I I I I I f6 Inspection Work Days Facility Self -Monitoring Evaluation Rating 31 CIA ------------------ Reserved---------- 67 70 [z j 71 I„ I 72 ,,, LJ LJ 731 I 174 75I III I I I I80 I I I Section B: Facility Data Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include Entry Time/Date Permit Effective Date POTW name and NPDES permit Number) 10:OOAM 15/08/06 09/11/01 Denton WWTP 300 Council Access Rd Exit Time/Date Permit Expiration Date Denton NC 27239 12:00PM 15/08/06 14/01/31 Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) Other Facility Data /// Troy B Branch//336-859-4460 /3368593381 Name, Address of Responsible Official/Title/Phone and Fax Number Contacted Genie Russell,PO Box 306 Denton NC 272390306//336-859-4231/ No Section C: Areas Evaluated During Inspection (Check only those areas evaluated) Permit N Flow Measurement Operations & Maintenance Records/Reports Self -Monitoring Program 0 Sludge Handling Disposal Facility Site Review Effluent/Receiving Waters Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) (See attachment summary) Name(s) and Signature(s) of Inspector(s) Agency/Office/Phone and Fax Numbers Date Jan' r Carter WSRO WQ//336-776-9691/ -- 6Owh 5 Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page# NPDES yr/mo/day Inspection Type 1 31 NCO026689 I11 12 15/08/06 17 18 I C Section D: Summary of Finding/Comments (Attach additionalsheetsof narrative and checklists as necessary) Page# 2 Permit: NCO026689 Owner - Facility: Denton VW TP Inspection Date: 08/06/2015 Inspection Type: Compliance Evaluation Permit Yes No NA NE (If the present permit expires in 6 months or less). Has the permittee submitted a new M ❑ ❑ ❑ application? Is the facility as described in the permit? M ❑ ❑ ❑ # Are there any special conditions for the permit? ❑ M ❑ ❑ Is access to the plant site restricted to the general public? 0 ❑ ❑ ❑ Is the inspector granted access to all areas for inspection? 0 ❑ ❑ ❑ Comment: Record Keeping Yes No NA NE Are records kept and maintained as required by the permit? 0 ❑ ❑ ❑ Is all required information readily available, complete and current? M ❑ ❑ ❑ Are all records maintained for 3 years (lab. reg. required 5 years)? 0 ❑ ❑ ❑ Are analytical results consistent with data reported on DMRs? 0 ❑ ❑ ❑ Is the chain -of -custody complete? 0 ❑ ❑ ❑ Dates, times and location of sampling Name of individual performing the sampling Results of analysis and calibration Dates of analysis Name of person performing analyses Transported CM Are DMRs complete: do they include all permit parameters? 0 ❑ ❑ ❑ Has the facility submitted its annual compliance report to users and DWQ? ❑ ❑ ❑ (If the facility is = or > 5 MGD permitted flow) Do they operate 24/7 with a certified operator ❑ ❑ 0 ❑ on each shift? Is the ORC visitation log available and current? M ❑ ❑ ❑ Is the ORC certified at grade equal to or higher than the facility classification? 0 ❑ ❑ ❑ Is the backup operator certified at one grade less or greater than the facility classification? 0 ❑ ❑ ❑ Is a copy of the current NPDES permit available on site? 0 ❑ ❑ ❑ Facility has copy of previous year's Annual Report on file for review? ❑ ❑ ❑ Comment: Influent Sampling Yes No NA NE # Is composite sampling flow proportional? ❑ ❑ 0 ❑ Is sample collected above side streams? 0 ❑ ❑ ❑ Page# 3 Permit: NCO026689 Owner - Facility: Denton VVVVTP Inspection Date: 08/06/2015 Inspection Type: Compliance Evaluation Influent Sampling Yes No NA NE Is proper volume collected? 0 ❑ ❑ ❑ Is the tubing clean? 0 ❑ ❑ ❑ # Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees ❑ ❑ ❑ Celsius)? Is sampling performed according to the permit? ❑ ❑ ❑ Comment: Effluent Sampling Yes No NA NE Is composite sampling flow proportional? 0 ❑ ❑ ❑ Is sample collected below all treatment units? N ❑ ❑ ❑ Is proper volume collected? 0 ❑ ❑ ❑ Is the tubing clean? 0 ❑ ❑ ❑ # Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees M ❑ ❑ ❑ Celsius)? Is the facility sampling performed as required by the permit (frequency, sampling type M ❑ ❑ ❑ representative)? Comment: New effluent sampler Flow Measurement - Effluent Yes No NA NE # Is flow meter used for reporting? 0 ❑ ❑ ❑ Is flow meter calibrated annually? M ❑ ❑ ❑ Is the flow meter operational? N ❑ ❑ ❑ (If units are separated) Does the chart recorder match the flow meter? ❑ ❑ 0 ❑ Comment: Calibration last checked on March 15, 2015 Operations & Maintenance Yes No NA NE Is the plant generally clean with acceptable housekeeping? ❑ ❑ ❑ Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable ❑ ❑ ❑ Solids, pH, DO, Sludge Judge, and other that are applicable? Comment: Pump Station - Influent Yes No NA NE Is the pump wet well free of bypass lines or structures? N ❑ ❑ ❑ Is the wet well free of excessive grease? 0 ❑ ❑ ❑ Page# 4 It Permit: NCO026689 Owner - Facility: Denton WWrP Inspection Date: 08/06/2015 Inspection Type: Compliance Evaluation Pump Station - Influent Yes No NA NE Are all pumps present? 0 ❑ ❑ ❑ Are all pumps operable? 0 ❑ ❑ ❑ Are Float controls operable? ❑ ❑ ❑ Is SCADA telemetry available and operational? ❑ ❑ 0 ❑ Is audible and visual alarm available and operational? ❑ ❑ ❑ Comment: Bar Screens Yes No NA NE Type of bar screen a.Manual b.Mechanical Are the bars adequately screening debris? 0 ❑ ❑ ❑ Is the screen free of excessive debris? M ❑ ❑ ❑ Is disposal of screening in compliance? 0 ❑ ❑ ❑ Is the unit in good condition? N ❑ ❑ ❑ Comment: helisieve out for repairs during inspection. Bar screens used as back-up. Grit Removal Yes No NA NE Type of grit removal a.Manual b.Mechanical ❑ Is the grit free of excessive organic matter? 0 ❑ ❑ ❑ Is the grit free of excessive odor? N ❑ ❑ ❑ # Is disposal of grit in compliance? N ❑ ❑ ❑ Comment: Oxidation Ditches Yes No NA NE Are the aerators operational? 0 ❑ ❑ ❑ Are the aerators free of excessive solids build up? 0 ❑ ❑ ❑ # Is the foam the proper color for the treatment process? 0 ❑ ❑ ❑ Does the foam cover less than 25% of the basin's surface? 0 ❑ ❑ ❑ Is the DO level acceptable? 0 ❑ ❑ ❑ Are settleometer results acceptable (> 30 minutes)? ❑ ❑ ❑ M Page# 5 Permit: NCO026689 Owner - Facility: Denton VVWT P Inspection Date: 08/06/2015 Inspection Type: Compliance Evaluation Oxidation Ditches Yes No NA NE Is the DO level acceptable?(1.0 to 3.0 mg/1) 0 ❑ ❑ ❑ Are settelometer results acceptable?(400 to 800 ml/I in 30 minutes) 0 ❑ ❑ ❑ Comment: Mr. Branch noted that maintaining a PH of -6.8 seems to be working to control filamentous bacteria Secondary Clarifier Yes No NA NE Is the clarifier free of black and odorous wastewater? 0 ❑ ❑ ❑ Is the site free of excessive buildup of solids in center well of circular clarifier? 0 ❑ ❑ ❑ Are weirs level? M ❑ ❑ ❑ Is the site free of weir blockage? M ❑ ❑ ❑ Is the site free of evidence of short-circuiting? 0 ❑ ❑ ❑ Is scum removal adequate? 0 ❑ ❑ ❑ Is the site free of excessive floating sludge? 0 ❑ ❑ ❑ Is the drive unit operational? 0 ❑ ❑ ❑ Is the return rate acceptable (low turbulence)? 0 ❑ ❑ ❑ Is the overflow clear of excessive solids/pin floc? M ❑ ❑ ❑ Is the sludge blanket level acceptable? (Approximately % of the sidewall depth) 0 ❑ ❑ ❑ Comment: Filtration (High Rate Tertiary) Yes No NA NE Type of operation: Down flow Is the filter media present? M ❑ ❑ ❑ Is the filter surface free of clogging? 0 ❑ ❑ ❑ Is the filter free of growth? 0 ❑ ❑ ❑ Is the air scour operational? ❑ ❑ ❑ Is the scouring acceptable? ❑ ❑ ❑ Is the clear well free of excessive solids and filter media? 0 ❑ ❑ ❑ Comment: Filter installed in 2000. Filter hasn't needed replacement vet. Chemical Feed Yes No NA NE Is containment adequate? M ❑ ❑ ❑ Is storage adequate? 0 ❑ ❑ ❑ Are backup pumps available? ❑ ❑ ❑ Is the site free of excessive leaking? 0 ❑ ❑ ❑ Page# 6 .; Permit: NCO026689 Owner -Facility: DentonyW TP Inspection Date: 06/06/2015 Inspection Type: Compliance Evaluation Chemical Feed Yes No NA NE Comment: New chlorine and sulf-dioxide detection systems installed. Disinfection -Gas Yes No NA NE Are cylinders secured adequately? 0 ❑ ❑ ❑ Are cylinders protected from direct sunlight? 0 ❑ ❑ ❑ Is there adequate reserve supply of disinfectant? 0 ❑ ❑ ❑ Is the level of chlorine residual acceptable? 0 ❑ ❑ ❑ Is the contact chamber free of growth, or sludge buildup? 0 ❑ ❑ ❑ Is there chlorine residual prior to de -chlorination? 0 ❑ ❑ ❑ Does the Stationary Source have more than 2500 Ibs of Chlorine (CAS No. 7782-50-5)? ❑ ❑ ❑ If yes, then is there a Risk Management Plan on site? ❑ ❑ ❑ If yes, then what is the EPA twelve digit ID Number? (1000- -� If yes, then when was the RMP last updated? Comment: New chlorine and sulf-dioxide detection systems installed. De -chlorination Yes No NA NE Type of system ? Gas Is the feed ratio proportional to chlorine amount (1 to 1)? ❑ ❑ E ❑ Is storage appropriate for cylinders? 0 ❑ ❑ ❑ # Is de -chlorination substance stored away from chlorine containers? N ❑ ❑ ❑ Are the tablets the proper size and type? ❑ ❑ 0 ❑ Comment: New chlorine and sulf-dioxide detection systems installed. Are tablet de -chlorinators operational? ❑ ❑ E ❑ Number of tubes in use? Comment: Aerobic Digester Yes No NA NE Is the capacity adequate? N ❑ ❑ ❑ Is the mixing adequate? 0 ❑ ❑ ❑ Is the site free of excessive foaming in the tank? 0 ❑ ❑ ❑ # Is the odor acceptable? 0 ❑ ❑ ❑ # Is tankage available for properly waste sludge? E ❑ ❑ ❑ Page# 7 Permit: NC0026689 Owner - Facility: Denton WWTP Inspection Date: 08/06/2015 Inspection Type: Compliance Evaluation Aerobic Digester Yes No NA NE Comment: Standby Power Yes No NA NE Is automatically activated standby power available? 0 ❑ ❑ ❑ Is the generator tested by interrupting primary power source? 0 ❑ ❑ ❑ Is the generator tested under load? M ❑ ❑ ❑ Was generator tested & operational during the inspection? 0 ❑ ❑ ❑ Do the generator(s) have adequate capacity to operate the entire wastewater site? 0 ❑ ❑ ❑ Is there an emergency agreement with a fuel vendor for extended run on back-up power? 0 ❑ ❑ ❑ Is the generator fuel level monitored? 0 ❑ ❑ ❑ Comment: Effluent Pipe Yes No NA NE Is right of way to the outfall properly maintained? ❑ M ❑ ❑ Are the receiving water free of foam other than trace amounts and other debris? ❑ ❑ ❑ M If effluent (diffuser pipes are required) are they operating properly? ❑ ❑ 0 ❑ Comment: Right of way cuts through soybean crop and owner gets upset when driven over. Mr. Branch is willing to walk across for now, but the right-of-way gives the Town the right to maintain access as needed. Page# 8 OXIDA`ION .' ANNi :1_ fro. 2 Qr,. Gl1Cc,`: r IN1y CLAR`FIFJZ S1_UDGS (-i 0L1)t G (Alij. ,-' 1N o . 3 -', SEC0�lV Ali', CLJkR1Fli. SC"cEE�j t Gp-'r ,�SECor4oARY\ Llr;" STATLOO i S421 C!2 SS CC►a n¢ C1.�4RIt=1F'� SLUDGE } OLV M G T'(y. i P��\MP 57t�- , tcjpJ iNr-t-us T E��LU,Et�Jt C)XIDA71 C►q � 1 NCDENR North Carolina Department of Environment and Natural Resources Pat McCrory Governor February 4, 2015 John L Gray, Interim Manager Town Town of Denton PO Box 306 Denton, NC 272390306 Subject: NOTICE OF VIOLATION NOV-2015-LV-0050 Permit No. NCO026689 Denton WWTP Davidson County Dear Mr. Gray: Donald R. van der Vaart Secretary A review of Denton WWTP's monitoring report for October 2014 showed the following violation: Parameter Date Limit Value Reported Value Limit Type Coliform, Fecal 10/18/2014 400.000 #/100m1 560.130 #/100m1 Weekly Geometric Mean Exceeded MF, M-FC Broth,44.5C Remedial actions, if not already implemented, should be taken to correct the above noncompliance problem. Please be aware that violations of your NPDES permit could result in enforcement action by the Division of Water Resources for this and any additional violations of State law. If you should have any questions, please do not hesitate to contact Jenifer Carter at (336) 776-9691. cc: DWR — Central Files WSRO Files Sincerely, W. Corey Basinger, Regional Supervisor Water Quality Regional Operations Section Division of Water Resources, NC DENR 450 W. Hanes Mill Rd, Suite 300; Winston-Salem, NC 27105 Phone: 336-776-98001 Internet: www.ncdenr.gov An Equal opportunity 1 Affirmative Action Employer — Made in part by recycled paper DMR Review Record ,VOV-1�10/S—LV 0os-0 Facility: Ifa) Permit No.: NIC �j f' Pipe No,: 00 MonthNear: � a(,/� Monthly Average Violations Parameter Permit Limit DMR Value % Over Limit Action Weekly/Daily Violations Date Parameter Permit Limit Limit Type DMR Value % Over Limit Zz 4-)� Action Monitoring Frequency Violations Date Parameter Permit Frequency Values Reported # of Violations Action OtheerrViolations/Staff Remarks: NOV: actirr 1112013 7�< (�01-(2 01 "Q1A Supervisor Remarks: t4 o, I Completed by: _ Q (4e Assistant Regional Supervisor Sign Off: Regional Supervisor Sign ` Off: Date: Date: Date: Z� ZO (S RECEIVED N.C. Dept. of ENR FEB 1 1 2015 Winston-Salem Repional Office TOWN OF DENTON February 10, 2015 Mrs. Jenifer Carter NCDENR Division of Water Resources Winston Salem Regional Office 450 West Hanes Mill Road, Suite 300 Winston-Salem, NC 27105 Subject: Submission of 2014 Annual Wastewater Performance Report Dear Mrs. Carter, I am submitting for your review and records two copies of our Annual Wastewater Performance Report for 2014 calendar year. We have made available copies for the public at Town Hall by an article published in local newspaper as well as publishing the report on the Town's website http://www.TownOfDenton.com under the tab Annual Wastewater Report. If you have any questions or comments please contact me at 336/859-4460 or TBranch@triad.rr.com. Thank you for your attention in this matter. Sincerely, Troy Branch Town of Denton WWTP ORC/Collection System ORC 201 W. Salisbury Street P.O. Box 306 Phone: (336) 859-4231 Denton, NC 27239 Fax: (336) 859-3381 This institution is an equal opportunity provider and employer 2014 Annual Wastewater Report House Bill 1160, the Clean Water Act of 1999, was ratified by the North Carolina General Assembly on July 20th, 1999 and signed into law by the Governor on July 21, 1999. This legislation requires that the owner or operator of any wastewater treatment works or wastewater collection system that treats or collects primarily domestic or municipal wastes provide an annual report to its users or customers and to the Department of Environment and Natural Resources (NCDENR) that summarizes the treatment works' or collection system's performance over a 12 month period. The law states the report shall summarize the performance of the treatment works or collection system and state the extent to which any terms of its permit, federal laws, or any State laws, regulations or rules related to the protection of water quality have been violated. Collection System The sewage collection system of the Town of Denton has approximately 20 miles of pipe with lines sized from 6 inch to 10 inch in diameter. There are 6 sewer lift stations located in and around town to convey the wastewater from our customers to the Wastewater Treatment Plant. The sewer collection system is subject to regular inspection by the Division of Water Quality a branch of the North Carolina Department of Environment and Natural Resources. The collection system was last inspected in October 2011. Sanitary Sewer overflows (SSO's) Date and Location Number of Gallons Cause Environmental Impact Disciplinary Action January 11, 2014 36,000 Inflow and None Notice of Councill Access Road Infiltration Violation and civil penalty of $375.00 August 1, 2014 33,500 Inflow and None Notice of Infiltration Violation Wastewater Treatment Plant (WWTP) The wastewater treatment facility operates under the National Pollutant Discharge Elimination System (NPDES), an EPA mandated requirement for all wastewater treatment facilities nation-wide. This permit includes monitoring requirements and discharge limits, some of which vary with seasons and have different maximums for daily, weekly and monthly averages. All limits are prescribed to protect the stream and down -stream users of the water. During the reporting year, January 1, 2014 - December 31, 2014, the Town of Denton treated 179 million gallons of wastewater. The previous year, we treated 184 million gallons. The WWTP is inspected regularly by the Winston-Salem Regional Office of the Division of Water Resources to ensure compliance with Federal and State regulations. The WWTP was last inspected on January 30, 2014. The inspection showed no violations. The Town of Denton WWTP is located on Councill Access Road. It is an extended aeration biological process treatment plant with a permitted flow of 800,000 gallons per day. The treatment plant, at its current location was completed in 1984 with an expansion in 2000. In 2014, the WWTP averaged 490,000 gallons per day. After solids removal and the biological treatment has occurred the water is disinfected with chlorine gas and subsequently de - chlorinated with Sulfur Dioxide. The outgoing water (effluent) is monitored and analyzed for some 17 permitted characteristics weekly and monthly. Annually, the wastewater is tested for an additional —100 parameters. 6 of these analytes are tested in-house at the WWTP field parameter laboratory. The parameters include; Flow, Dissolved Oxygen, Temperature, pH, Conductivity and Ultra Low Range Chlorine Residual. Because aquatic life is more sensitive than humans to these materials, some of these parameter limits are lower than drinking water standards. The permits are complex and can be viewed upon request. Environmental Programs and Services As part of our commitment to support environmental awareness and promote a better understanding of our community's environmental role, Denton has offered tours of the WWTP and annually visits the local elementary school to discuss wastewater treatment, water conservation and residential grease management with their 5th Grade classes. This is when the topics of water reclamation and water conservation enter their curriculum. We have also utilized the Town's annual street festival in September by setting up a booth to spread the word about Fat's, Oil and Grease management as well as water saving tips. Prohibited pollutants or liquids include: • Pollutants which create a fire or explosive hazard • Petroleum based products • Any wastewater having a pH of less than 5.0 or greater than 9.5. • Storm water, surface water, ground water, roof run-off, or swimming pool drainage. • Fats, Oils and Greases (FOG) • Medical wastes (i.e. needles, glass fragments, razors and expired and/or unused prescriptions/medications) • Any wastes containing detergents or other substances which may cause excessive foaming in the POTW. Solid or viscous substances in amounts which will cause obstruction in the flow in the POTW resulting in the interference but in no case solids larger than one half inch(1/2") in any dimension. • Any wastewater containing pollutants, including oxygen -demanding pollutants, (BOD etc.) in sufficient quantity, either singly or by interaction with other pollutants, to cause interference with the POTW. • Any wastewater having a temperature greater than 1500 F (66°C) or which will inhibit biological activity in the POTW, but in no case wastewater which causes the temperature at the introduction into the WWTP to exceed 1040 F (40°C) Fats, Oils, and Grease (FOG) Grease is a real "pain in the drain" because it's a major cause of problems we find in sewer lines. Blockages occur when grease (things like oil, butter, margarine, Sewer line inundated with grease TH VV shortening, pan drippings, and sauces) is poured down the drain. Grease can clog sewer lines. Clogged sewer lines lead to sewer spills, which are messy, bad for the environment, and can be expensive. Town of Denton does everything it can to prevent sewer spills, but we can't do it alone. We need your help! The best way you can prevent sewer spills is to never pour grease down the drain. Instead, pour it into a used soup can, place in freezer to harden, and throw it away in the trash. Don't believe the old saying: "It's okay to pour grease down the drain as long as you run water at the same time", or "It's perfectly fine to dump grease if you use your garbage disposal to break it up." These are myths! It's never okay to pour any type of grease down the drain. Here are some more ways to "Cease the Grease"- • Wipe or scrape your dishes before washing them • Remove excess oil from pots and pans with a paper towel and throw it the trash can. • Use strainers in sink drains to collect food scraps and throw away the scraps in the trash. Thank you for your help, and please spread the word about how important it is to "Cease the Grease". Together, we can protect our sewer system and the environment. For more information, please visit our web site www.TownOfDenton.com or call 859-4460. If you have questions or comments about this report you may direct them to Mr. Troy Branch, POTW ORC at 859-4460 or you are invited to attend the Board of Commissioners meeting held the first and third Monday monthly at Town Hall at 201 West Salisbury Street. NCDENR North Carolina Department of Environment and Natural Resources Pat McCrory Governor February 23, 2015 John L Gray, Interim Manager Town Town of Denton PO Box 306 Denton, NC 272390306 Subject: NOTICE OF VIOLATION NOV-2015-LV-0078 Permit No. NCO026689 Denton WWTP Davidson County Dear Mr. Gray: Donald R. van der Vaart Secretary A review of Denton WWTP's monitoring report for November 2014 showed the following violation: Parameter Date Limit Value Reported Value Limit Type Coliform, Fecal 11/29/2014 400.000 #/100ml 512.990 #/100m1 Weekly Geometric Mean Exceeded Remedial actions, if not already implemented, should be taken to correct the above noncompliance problem. Please be aware that violations of your NPDES permit could result in enforcement action by the Division of Water Resources for this and any additional violations of State law. If you should have any questions, please do not hesitate to contact Jenifer Carter at (336) 776-9691. cc: DWR — Central Files WSRO Files Sincerely, W. Corey Basinger, Regional Supervisor Water Quality Regional Operations Section Division of Water Resources, NC DENR 450 W. Hanes Mill Rd, Suite 300; Winston-Salem, NC 27105 Phone: 336-776-98001 Internet: www.ncdenr.gov An Equal Opportunity \Aifirmafive Action Employer— Made in part by recycled paper !snnr ®acvecxr naLFWIU Facility r (/LJW Permit No.: LL( 0 Pipe No.: MonthNear: Monthly Average Violations Parameter Permit Limit DMR Value % Over Limit Action Weekly/Daily Violations Date Parameter Permit Limit Limit Tvpe DMR Value % Over Limit Action Monitoring Frequency Violations Date Parameter Permit Frequency Values Reported # of Violations Action Other Violations/Staff Remarks: �s� lZ /nlxt�tls� AvoV 4-V 0&4y Ivz 91-11, �c� /►r�, �� �a l��` ye1�f Cau� �`Co 4r)p oh l)Wk5 supervisor Remarks: NOV Completed by: �(r� Date: 2 7 3 / S Assistant Regional Supervisor Sign Off: Date: Regional Supervisor Sign Off: Date: Z2 J rig low NCDENR North Carolina Department of Environment and Natural Resources Division of Water Resources Water Quality Regional Operations Pat McCrory Thomas A, Reeder Governor Director February 28, 2014 Mr. John L. Gray, Interim Town Manager Town of Denton P.O. Box 306 Denton, NC 27239-0306 SUBJECT: Compliance Evaluation Inspection Town of Denton WWTP NPDES Permit #NC0026689 Davidson County Dear Mr. Gray: John E. Skvarla, III Secretary A compliance Evaluation Inspection was performed at the Town of Denton's WWTP on January 30, 2014 by Jenifer Carter of the Winston-Salem Regional Office. Troy Branch, Operator in Responsible Charge (ORC), was present for the inspection. This type of inspection consists of an in office review of facility records and an on -site inspection of the facility. Noted during the inspection: • Lab data, maintenance logs, ORC visitation logs and calibration records were well organized and complete. • Michael High is serving as back-up ORC until Steven Abercrombie obtains his WW Grade II Certification. • The air temperature during the inspection was below 20' Fahrenheit, and had been for several days prior. The sludge basin aerators were slightly tilted due to icing. • There was some pin floc in the secondary clarifiers, though it did not appear to negatively affect treatment. • The sand filters were out of service for repairs. • Mr. Branch now requires sludge haulers to dump at a designated location inside the gate, at the plant, so he can observe the procedure. • New land (-88 acres) has been obtained for land application purposes. Mr. Branch continues to maintain all records in excellent order and to operate the plant to its maximum capability. Should you have any questions please contact Ms. Jenifer Carter in our Winston-Salem Regional Office at (336) 771-4957. cc: Troy Branch (same address) SWP-Central Files WSRO Files North Carolina Division of Water Resources, Winston-Salem Regional Office Location: 585 Waughtown Street, Winston-Salem, NC 27107 Phone: (336) 771-50001 Fax: (336) 77146301 Customer Service: 1-877-623-6748 Internet: hftp://www.nc.vater.org Sincerely, W. Corey Basinger Regional Supervisor Water Quality Regional Operations Section Division of Water Resources Nne orthCarolina Naturally An Equal Opportunity 1 Affirmative Action Employer United States Environmental Protection Agency Form Approved. EPA Washington, D.C. 20460 OMB No. 2040-0057 Approval expires 8-31-98 Section A: National Data System Coding (i.e., PCS) Transaction Code NPDES yr/mo/day Inspection Type Inspector Fac Type 1 INI 2 15 I 31 NCO026689 111 121 14/01/30 117 18I C I 191 C,1 20IU L L! Remarks 2111111111 11111111 11111111 1111 111111111111 1111 1116 Inspection Work Days Facility Self -Monitoring Evaluation Rating 61 QA 671 169 70 L! 711 N -liI 72 IJ 73I I 174 751 I I I I I I 180 -� W Section B: FacilityData Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include Entry Time/Date Permit Effective Date POTW name and NPDES permit Number) Denton WWTP 10:00 AM 14/01/30 09/11/01 Exit Time/Date Permit Expiration Date NCSR 2569 Denton NC 27239 11:00 AM 14/01/30 14/01/31 Name(s) of Onsite Representative(syTitles(s)/Phone and Fax Number(s) Other Facility Data /// Troy B Branch//336-859-4460 /3368593381 Name, Address of Responsible Official/Title/Phone and Fax Number Contacted Genie Russell,PO Box 306 Denton NC 272390306//336-859-4231/ No Section C: Areas Evaluated During Inspection (Check only those areas evaluated) Permit E Flow Measurement 0 Operations & Maintenance Records/Reports Self -Monitoring Program 0 Sludge Handling Disposal E Facility Site Review Effluent/Receiving Waters Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) (See attachment summary) Name(s) and Signature(s) of Inspector(s) Agency/Office/Phone and Fax Numbers Date Jenifer C er WSRO WQ//336-771-50001 Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page # 1 NPDES yr/mo/day Inspection Type 3 I NC0026689 11 12 14/01 /30 1 17 18 Id Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) Overall, the plant appears to be well -operated. Mr. Branch managed to bring filamentous bacteria under control utilizing pH adjustment. In an attempt to control what is discharged to the plant, Mr. Branch requires sludge haulers to dump at a designated location within the plant, under plant operator supervision. New acreage (approx. 88 acres) has been obtained for sludge application and will be utilized when the ground thaws during warmer weather. Page # 2 0 Permit: NCO026689 Owner - Facility: Denton WWTP Inspection Date: 01/30/2014 Inspection Type: Compliance Evaluation Permit Yes No NA NE (If the present permit expires in 6 months or less). Has the permittee submitted a new application? ■ ❑ ❑ ❑ Is the facility as described in the permit? ■ ❑ ❑ 0 # Are there any special conditions for the permit? ❑ ■ ❑ ❑ Is access to the plant site restricted to the general public? ■ ❑ ❑ ❑ Is the inspector granted access to all areas for inspection? ■ ❑ ❑ ❑ Comment: . Record Keeping Yes No NA NE Are records kept and maintained as required by the permit? ■ ❑ ❑ ❑ Is all required information readily available, complete and current? ■ ❑ ❑ ❑ Are all records maintained for 3 years (lab. reg. required 5 years)? ■ ❑ ❑ ❑ Are analytical results consistent with data reported on DMRs? ■ ❑ ❑ ❑ Is the chain -of -custody complete? ■ ❑ ❑ ❑ Dates, times and location of sampling ■ Name of individual performing the sampling ■ Results of analysis and calibration ■ Dates of analysis ■ Name of person performing analyses ■ Transported COCs ■ Are DMRs complete: do they include all permit parameters? ■ ❑ ❑ ❑ Has the facility submitted its annual compliance report to users and DWQ? ❑ ❑ ❑ ■ (If the facility is = or > 5 MGD permitted flow) Do they operate 24/7 with a certified operator on each shift? ❑ ❑ ■ ❑ Is the ORC visitation log available and current? ■ ❑ ❑ ❑ Is the ORC certified at grade equal to or higher than the facility classification? ■ ❑ ❑ ❑ Is the backup operator certified at one grade less or greater than the facility classification? ■ ❑ ❑ ❑ Is a copy of the current NPDES permit available on site? ■ ❑ ❑ ❑ Facility has copy of previous year's Annual Report on file for review? ❑ ❑ ❑ ■ Comment: Influent Sampling Yes No NA NE # Is composite sampling flow proportional? ❑ ❑ ■ ❑ Page # 3 v Permit: NCO026689 Owner - Facility: Denton WWTP Inspection Date: 01/30/2014 Inspection Type: Compliance Evaluation Influent Sampling Yes No NA NE Is sample collected above side streams? ■ ❑ ❑ ❑ Is proper volume collected? ■ ❑ ❑ ❑ Is the tubing clean? ■ ❑ ❑ ❑ # Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees Celsius)? ■ ❑ ❑ ❑ Is sampling performed according to the permit? ■ ❑ ❑ ❑ Comment: Effluent Sampling Yes No NA NE Is composite sampling flow proportional? ■ ❑ ❑ ❑ Is sample collected below all treatment units? ■ ❑ ❑ ❑ Is proper volume collected? ■ ❑ ❑ ❑ Is the tubing clean? ■ ❑ ❑ ❑ # Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees Celsius)? ■ ❑ ❑ ❑ Is the facility sampling performed as required by the permit (frequency, sampling type representative)? ■ ❑ ❑ ❑ Comment: Flow Measurement - Effluent Yes No NA NE # Is flow meter used for reporting? ■ ❑ ❑ ❑ Is flow meter calibrated annually? ■ ❑ ❑ ❑ Is the flow meter operational? ■ ❑ ❑ ❑ (If units are separated) Does the chart recorder match the flow meter? ❑ ❑ ■ ❑ Comment: Operations & Maintenance Yes No NA NE Is the plant generally clean with acceptable housekeeping? ■ ❑ ❑ ❑ Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable Solids, pH, DO, Sludge ■ ❑ ❑ ❑ Judge, and other that are applicable? Comment: Pump Station - Influent Yes No NA NE Is the pump wet well free of bypass lines or structures? ■ ❑ ❑ ❑ Is the wet well free of excessive grease? 0111111 Are all pumps present? ■ 0 ❑ ❑ Are all pumps operable? ■ ❑ ❑ ❑ Page # 4 n Permit: NCO026689 Owner - Facility: Denton WWTP Inspection Date: 01/30/2014 Inspection Type: Compliance Evaluation Pump Station - Influent Yes No NA NE Are float controls operable? ❑ ❑ ■ ❑ Is SCADA telemetry available and operational? ❑ ■ ❑ ❑ Is audible and visual alarm available and operational? ■ ❑ ❑ ❑ Comment: Bar Screens Yes No NA NE Type of bar screen a.Manual ■ b.Mechanical ■ Are the bars adequately screening debris? ■ ❑ ❑ ❑ Is the screen free of excessive debris? ■ ❑ ❑ ❑ Is disposal of screening in compliance? ■ ❑ ❑ ❑ Is the unit in good condition? ■ ❑ ❑ ❑ Comment: Helisieve used in conjunction with course bar screen Grit Removal Yes No NA NE Type of grit removal a.Manual ■ b.Mechanical ❑ Is the grit free of excessive organic matter? ■ ❑ ❑ ❑ Is the grit free of excessive odor? ■ ❑ ❑ ❑ # Is disposal of grit in compliance? ■ ❑ ❑ ❑ Comment: Oxidation Ditches Yes No NA NE Are the aerators operational? ■ ❑ ❑ ❑ Are the aerators free of excessive solids build up? ■ ❑ ❑ ❑ # Is the foam the proper color for the treatment process? ■ ❑ ❑ ❑ Does the foam cover less than 25% of the basin's surface? ■ n ❑ n Is the DO level acceptable? ■ ❑ ❑ ❑ Are settleometer results acceptable (> 30 minutes)? ❑ ❑ ❑ ■ Is the DO level acceptable?(1.0 to 3.0 mg/1) ■ n ❑ n Are settelometer results acceptable?(400 to 800 ml/I in 30 minutes) ■ ❑ ❑ ❑ Page # 5 Permit: NCO026689 Inspection Date: 01/30/2014 Oxidation Ditches Owner - Facility: Denton WWTP Inspection Type: Compliance Evaluation Comment: Mr. Branch noted pH adjustment to >6.8 seems to have solved the problem with filamentous bacteria. Secondary Clarifier Is the clarifier free of black and odorous wastewater? Is the site free of excessive buildup of solids in center well of circular clarifier? Are weirs level? Is the site free of weir blockage? Is the site free of evidence of short-circuiting? Is scum removal adequate? Is the site free of excessive floating sludge? Is the drive unit operational? Is the return rate acceptable (low turbulence)? Is the overflow clear of excessive solids/pin floc? Is the sludge blanket level acceptable? (Approximately'/. of the sidewall depth) Comment: A small amount of pin floc noted in the clarifiers. Filtration (High Rate Tertiary) Type of operation: Is the filter media present? Is the filter surface free of clogging? Is the filter free of growth? Is the air scour operational? Is the scouring acceptable? Is the clear well free of excessive solids and filter media? Comment: Filters not being operated during the inspection - out for repairs. Yes No NA NE Yes No NA NE Yes No NA NE Yes No NA NE Is containment adequate? ■ ❑ Cl ❑ Is storage adequate? ■ ❑ ❑ ❑ Are backup pumps available? ❑ ❑ ❑ ■ Is the site free of excessive leaking? ■ ❑ ❑ ❑ Comment: Page # 6 Permit: NC0026689 Owner - Facility: Denton WWTP Inspection Date: 01/30/2014 Inspection Type: Compliance Evaluation Disinfection -Gas Yes No NA NE Are cylinders secured adequately? Are cylinders protected from direct sunlight? Is there adequate reserve supply of disinfectant? Is the level of chlorine residual acceptable? Is the contact chamber free of growth, or sludge buildup? Is there chlorine residual prior to de -chlorination? Does the Stationary Source have more than 2500 Ibs of Chlorine (CAS No. 7782-50-5)? If yes, then is there a Risk Management Plan on site? If yes, then what is the EPA twelve digit ID Number? (1000- - ) If yes, then when was the RMP last updated? Comment: De -chlorination Type of system ? Is the feed ratio proportional to chlorine amount (1 to 1)? Is storage appropriate for cylinders? # Is de -chlorination substance stored away from chlorine containers? Comment: Are the tablets the proper size and type? Are tablet de -chlorinators operational? Number of tubes in use? Comment: Aerobic Digester Is the capacity adequate? Is the mixing adequate? Is the site free of excessive foaming in the tank? # Is the odor acceptable? # Is tankage available for properly waste sludge? Comment: aerators slightly tilted due to recent/current cold temperatures/icing. Drying Beds Is there adequate drying bed space? ■n❑n ■❑00 ■❑❑❑ ■000 ■n00 ■❑❑❑ ❑00N nnn■ Yes No NA NE 0 0 E0 n ❑ ■ ❑ Yes No NA NE ■ n ❑ ■ Page # 7 Permit: NC0026689 Owner - Facility: Denton WWTP Inspection Date: 01/30/2014 Inspection Type: Compliance Evaluation Drying Beds Yes No NA NE Is the sludge distribution on drying beds appropriate? Are the drying beds free of vegetation? # Is the site free of dry sludge remaining in beds? Is the site free of stockpiled sludge? Is the filtrate from sludge drying beds returned to the front of the plant? # Is the sludge disposed of through county landfill? # Is the sludge land applied? (Vacuum filters) Is polymer mixing adequate? Comment: Effluent Pipe Is right of way to the outfall properly maintained? Are the receiving water free of foam other than trace amounts and other debris? If effluent (diffuser pipes are required) are they operating properly? Comment: Mr. Branch visits the outfall regularly. A road is maintained to the outfall across the farmer owner's property. Standby Power Is automatically activated standby power available? Is the generator tested by interrupting primary power source? Is the generator tested under load? Was generator tested & operational during the inspection? Do the generator(s) have adequate capacity to operate the entire wastewater site? Is there an emergency agreement with a fuel vendor for extended run on back-up power? Is the generator fuel level monitored? Comment: Yes No NA NE Yes No NA NE Page # 8 LPKWA MDENR North Carolina Department of Environment and Natural Resources Pat McCrory Governor Division of Water Resources Water Quality Regional Operations Section Thomas A. Reeder Director January 15, 2014 Mr. Scott Morris, Town Manager Town of Denton P.O. Box 306 Denton, NC 272390306 Subject: NOTICE OF VIOLATION NOV-2014-LV-0014 Permit No. NCO026689 Denton WWTP Davidson County Dear Mr Morris: John E. Skvarla, III Secretary A review of Denton WWTP's monitoring report for October 2013 showed the following violation: Parameter Date Limit Value Reported Value Limit Type Coliform, Fecal 10/12/13 400 #/100m1 600 #/100ml Weekly Geometric Mean Exceeded Remedial actions, if not already implemented, should be taken to correct the above noncompliance problem. Please be aware that violations of your NPDES permit could result in enforcement action by the Division of Water Resources for this and any additional violations of State law. If you should have any questions, please do not hesitate to contact Jenifer Carter at (336) 771-4957. cc: SWP — Central Files WSRO Files North Carolina Division of Water Resources, Winston-Salem Regional Office Location: 585 Waughtown St. Winston-Salem, North Carolina 27107 Phone: 336-771-50001 FAX: 336-771-4630 \ Customer Service: 1-877-623-6748 Irtternet: www.ncwater.org Sincerely, W. Corey Basinger Regional Supervisor Water Quality Regional Operations Section Division of Water Resources NorthCarolina Natuta!!ry An Equal Opportunity 1 Affirmative Action Employer N�U'� (l� — �( Lf Cover Sheet from Staff Member to Regional Supervisor �,, �� DNIR Review Record Facility.: Vi or1 iJ�u �� Permit/Pipe No.)N C Month/Year Monthly Average Violations Parameter Permit Limit DMR Value % Over Limit eekl /Daily Violations Date Parameter Permit Lin-il 'vpe DMR Value % Over Limit Monitoring Frequency Violations Date Parameter Permit Frequency Values Reported # of Violations Other Violations Zos f 12 i�'OVL h � Z v/ 3 - ono �;.,� /� l "F �l Completed by: ✓ - (arErDate: Regional Water Quality Supervisor Signoff: Date: wj T�� i . NCDENR North Carolina Department of Environment and Natural Division of Water Quality Pat McCrory Thomas A. Reeder Governor Acting Director August 19, 2013 Town Of Denton WTP- �jLj-rP P.O. Box 306 Denton, NC 27239 Subject: Receipt of permit renewal application NPDES Permit NCO026689 Davidson County Dear Genie Russell, Winston Tern — RegicTai O,fic; John E. Skvarla, III Secretary The NPDES Unit received your permit renewal application on July 26th, 2013. This permit renewal has been assigned Julie Grzyb (919-807-6389) who will contact you if any additional information is required to complete your permit renewal. Due to current backlog, you should continue to operate under terms of your current permit, until a new permit is issued. If you have any questions, please contact the assigned permit writer. Sin rely, Jeff Poupa Point Source Branch Program Supervisor IV Cc: Central Files Winston Salem Regional Office NPDES Unit 1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Location: 512 N. Salisbury St. Raleigh, North Carolina 27604 Phone: 919-807-63001 FAX: 919-807-6492 Internet: www.ncwaterguality.org An Equal Opportunity 1 Affirmative Action Employer J One NorthCarohna ;Vaturallty FACILITY NAME AND PERMIT NUMBER: I PERMIT ACTION REQUESTED: I RIVER BASIN: Denton VWVfP, NCO026689 FORM 2A NPDES APPLICATION OVERVIEW Renewal Yadkin/Pee Dee Form 2A has been developed in a modular format and consists of a "Basic Application Information" packet and a "Supplemental Application Information" packet. The Basic Application Information packet is divided into two parts. All applicants must complete Parts A and C. Applicants with a design flow greater than or equal to 0.1 mgd must also complete Part B. Some applicants must also complete the Supplemental Application Information packet. The following items explain which parts of Form 2A you must complete. BASIC APPLICATION INFORMATION: A. Basic Application Information for all Applicants. All applicants must complete questions A.1 through A.8. A treatment works that discharges effluent to surface waters of the United States must also answer questions A.9 through A.12. B. Additional Application Information for Applicants with a Design Flow z 0.1 mgd. All treatment works that have design flows greater than or equal to 0.1 million gallons per day must complete questions B.1 through 6.6. C. Certification. All applicants must complete Part C (Certification). SUPPLEMENTAL APPLICATION INFORMATION: D. Expanded Effluent Testing Data. A treatment works that discharges effluent to surface waters of the United States and meets one or more of the following criteria must complete Part D (Expanded Effluent Testing Data): 1. Has a design flow rate greater than or equal to 1 mgd, 2. Is required to have a pretreatment program (or has one in place), or 3. Is otherwise required by the permitting authority to provide the information. E. Toxicity Testing Data. A treatment works that,#44ets one or more of the following criteria must complete Part E (Toxicity Testing Data): 1. Has a design flow rate greater than or equal to 1 mgd, 2. Is required to have a pretreatment program (or has one in place), or 3. Is otherwise required by the permitting authority to submit results of toxicity testing. Industrial User Discharges and RCRA/CERCLA Wastes. A treatment works that accepts process wastewater from any significant industrial users (SIUs) or receives RCRA or CERCLA wastes must complete Part F (Industrial User Discharges and RCRA/CERCLA Wastes). SIUs are defined as: 1. All industrial users subject to Categorical Pretreatment Standards under 40 Code of Federal Regulations (CFR) 403.6 and 40 CFR Chapter I, Subchapter N (see instructions); and 2. Any other industrial user that: a. Discharges an average of 25,000 gallons per day or more of process wastewater to the treatment works (with certain exclusions); or b. Contributes a process wastestream that makes up 5 percent or more of the average dry weather hydraulic or organic capacity of the treatment plant; or C. Is designated as an SIU by the control authority. G. Combined Sewer Systems. A treatment works that has a combined sewer system must complete Part G (Combined Sewer Systems). JUL 2:6 2013 EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN: Denton WWTP, NCO026689 Renewal Yadkin/Pee Dee r P/�Rt � �ASICfa�►P�L;I��'�0�1 �(��,`0��1fAt�OM `�b� �Lt� A��4.IG�`/1��`�� 1 ' � t All treatment works must complete questions A.1 through A.8 of this Basic Application Information Packet A.1. Facility Information. Facility Name Town of Denton Wastewater Treatment Plant Mailing Address PO Box 306 Denton, NC 27239 Contact Person Troy B. Branch Title Operator in Responsible Charge Telephone Number 336-859-4460 Facility Address 300 Council Access Road (not P.O. Box) Denton, NC 27239 A.2. Applicant Information. If the applicant is different from the above, provide the following: Applicant Name Mailing Address Contact Person Title Telephone Number f Is the applicant the owner or operator (or both) of the treatment works? ❑ owner X operator Indicate whether correspondence regarding this permit should be directed to the facility or the applicant. X facility ❑ applicant A.3. Existing Environmental Permits. Provide the permit number of any existing environmental permits that have been issued to the treatment works (include state -issued permits). NPDES NCO026689 UIC Other WOCS00223 RCRA Other WQ0016966 A.4. Collection System Information. Provide information on municipalities and areas served by the facility. Provide the name and population of each entity and, if known, provide information on the type of collection system (combined vs. separate) and its ownership (municipal, private, etc.). Name Population Served Type of Collection System Ownership Town of Denton 1686 Separate Sanitary Municipal Total population served 1686 EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 2 of 22 FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN: Denton WWTP , NCO026689 Renewal I Yadkin/Pee Dee A.5. Indian Country. a. Is the treatment works located in Indian Country? ❑ Yes X No b. Does the treatment works discharge to a receiving water that is either in Indian Country or that is upstream from (and eventually flows through) Indian Country? ❑ Yes X No A.6. Flow. Indicate the design flow rate of the treatment plant (i.e., the wastewater flow rate that the plant was built to handle). Also provide the average daily flow rate and maximum daily flow rate for each of the last three years. Each year's data must be based on a 12-month time period with the 12t' month of "this year" occurring no more than three months prior to this application submittal. a. Design flow rate 0.8 MGD Two Years Aao last Year This Year b. Annual average daily flow rate 0.416 0.402 0.468 C. Maximum daily flow rate 1.141 1.374 1.473 A.7. Collection System. Indicate the type(s) of collection system(s) used by the treatment plant Check all that apply. Also estimate the percent contribution (by miles) of each. X Separate sanitary sewer 100 % ❑ Combined storm and sanitary sewer % A.8. Discharges and Other Disposal Methods. a. Does the treatment works discharge effluent to waters of the U.S.? X Yes ❑ No If yes, list how many of each of the following types of discharge points the treatment works uses: i. Discharges of treated effluent ii. Discharges of untreated or partially treated effluent iii. Combined sewer overflow points iv. Constructed emergency overflows (prior to the headworks) V. Other b. Does the treatment works discharge effluent to basins, ponds, or other surface impoundments that do not have outlets for discharge to waters of the U.S.? ❑ Yes If yes, provide the following for each surface impoundment. Location: Annual average daily volume discharge to surface impoundment(s) Is discharge ❑ continuous or ❑ intermittent? C. Does the treatment works land -apply treated wastewater? If yes, provide the following for each land application site: Location: Number of acres: Annual average daily volume applied to site: Is land application ❑ continuous or ❑ intermittent? d. Does the treatment works discharge or transport treated or untreated wastewater to another treatment works? 1 0 0 0 X No N/A mgd ❑ Yes X No mgd ❑ Yes X No EPA Forn 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 3 of 22 FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN: Denton WWTP , NCO026689 Renewal Yadkin/Pee Dee If yes, describe the mean(s) by which the wastewater from the treatment works is discharged or transported to the other treatment works (e.g., tank truck, pipe). If transport is by a party other than the applicant, provide: Transporter Name Mailing Address Contact Person Title Telephone Number ( ) For each treatment works that receives this discharge, provide the following: Name Mailing Address Contact Person Title Telephone Number ( ) If known, provide the NPDES permit number of the treatment works that receives this discharge Provide the average daily flow rate from the treatment works into the receiving facility. mgd e. Does the treatment works discharge or dispose of its wastewater in a manner not included in A.8. through A.8.d above (e.g., underground percolation, well injection): ❑ Yes X No If yes, provide the following for each disposal method: Description of method (including location and size of site(s) if applicable): Annual daily volume disposed by this method: Is disposal through this method ❑ continuous or ❑ intermittent? EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 4 of 22 FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN: Denton WWTP , NCO026689 I Renewal I Yadkin/Pee Dee WASTEWATER DISCHARGES: If you answered "Yes" to question A.8.a, complete auestions A.9 through A.12 once for each outfall (including bypass points) through which effluent is discharged. Do not include information on combined sewer overflows in this section. If you answered "No" to question A 8.a, go to Part B, "Additional Application Information for Applicants with a Design Flow Greater than or Equal to 0.1 mgd." A.9. Description of Outfall. a. Outfall number 001 b. Location Denton _ 7239 (City or town, if applicable) (Zlp Code) Davidson NC (County) (State) 35° 37' 27" 80° 09' 17" (Latitude) (Longitude) C. Distance from shore (if applicable) N/A ft. d. Depth below surface (if applicable) N/A ft. e. Average daily flow rate 0.402 mgd f. Does this outfall have either an intermittent or a periodic discharge? o Yes ® No (go to A.9.g.) If yes, provide the following information: Number f times per year discharge occurs: Average duration of each discharge: Average flow per discharge: Months in which discharge occurs: g. Is outfall equipped with a diffuser? ❑ Yes ® No A.10. Description of Receiving Waters. a. Name of receiving water: Lick Creek b. Name of watershed (if known) Yadkin/Pee Dee United States Soil Conservation Service 14-digit watershed code (if known): C. Name of State Management(River Basin (if known): Yadkin United States Geological Survey 8-digit hydrologic cataloging unit code (if known): d. Critical low flow of receiving stream (if applicable) mgd acute cfs chronic cis e. Total hardness of receiving stream at critical low flow (if applicable): mg/l of CaCO3 EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 5 of 22 FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN: Denton WWTP, NCO026689 Renewal Yadkin/Pee Dee A.11. Description of Treatment a. What level of treatment are provided? Check all that apply. ❑ Primary ® Secondary ❑ Advanced ® Other. Describe: Tertiary treatment b. Indicate the following removal rates (as applicable): Design BOD5 removal or Design CBOD5 removal >85 % Design SS removal >88 % Design P removal % Design N removal Other % C. What type of disinfection is used for the effluent from this outfall? If disinfection varies by season, please describe: Chlorine Gas in 150 pound cylinders If disinfection is by chlorination is dechlorination used for this outfall? ® Yes ❑ No Does the treatment plant have post aeration? ® Yes ❑ No A.12. Effluent Testing Information. All Applicants that discharge to waters of the US must provide effluent testing data for the following parameters. Provide the indicated effluent testing required by the permitting authority for each outfall through which effluent is discharged. Do not include information on combined sewer overflows in this section. All information reported must be based on data collected through analysis conducted using 40 CFR Part 136 methods. In addition, this data must comply with QA1QC requirements of 40 CFR Part 136 and other appropriate QAlQC requirements for standard methods for anaiytes not addressed by 40 CFR Part 136. At a minimum, effluent testing data must be based on at least three samples and must be no more than four and one-half years apart Outfall number: 001 MAXIMUM DAILY VALUE AVERAGE DAILY VALUE PARAMETER Value Units Value Units Numtier of Samples pH (Minimum) 6.0 S.U. pH (Maximum) 7.8 s.u. Flow Rate 1.595 MGD 0.417 MGD 1247 Temperature Winter) 21 CC 13.51 oC 544 Temperature (Summer) 31 oC 22.89 oC 703 * For DH please report a minimum and a maximum daily value MAXIMUM DAILY AVERAGE.DAILY'DISCHARGE POLLUTANT DISCHARGE A ANALYTICAL METHOD ML/MDL Number of Con( Units Conc. Units Samples CONVENTIONAL AND NON CONVENTIONAL COMPOUNDS BIOCHEMICAL OXYGEN BOD5 mg/L 3.49 mg/L 530 SM52108 2.0 DEMAND (Report one) 15.6 CBOD5 FECAL COLIFORM 1040 Colony! 5.70 c.tu. 530 SM9222D 1 co11100mL 100mL TOTAL SUSPENDED SOLIDS (TSS) 60 m /L 4.07 mg/L 530 SM2540C 2.0 k o' 1�Q■n1},�trt 1C A ..ft rt 1�■11 Yki l < k r • t.2'�'r .}✓`f �(J,.ar .'TJ^°'.'sn h.....' it'.v}v Y40,i3.a y�2<. Yn .i,..s-:.i.YF 1� ���.. U1111 Qq 1 V-u knev. 1-ay). meplaces crA Torms rbbu-o 6 Tbbu-22. Page 6 of 22 FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN: Denton WWTP, NCO026689 Renewal Yadkin/ Pee Dee i F�A1f����' t`II� jT1FlFI1 iftt�P'L`� ip#JI►a �I �x�it�A,��AGD �a...ur �ciii� �.vi....... w. aY, r.... .E. All applicants with a design flow rate Z 0.1 mgd must answer questions BA through B.S. All others go to Part C (Certification). B.1. Inflow and infiltration. Estimate the average number of gallons per day that flow into the treatment works from inflow and/or infiltration. 100,000 gpd Briefly explain any steps underway or planned to minimize inflow and infiltration. We received a grant from USDA for sewer collection system rehabilitation We are approximately 80% complete as of the date of this application submittal. B.2. Topographic Map. Attach to this application a topographic map of the area extending at least one mile beyond facility property boundaries. This map must show the outline of the facility and the following information. (You may submit more than one map if one map does not show the entire area.) a. The area surrounding the treatment plant, including all unit processes. b. The major pipes or other structures through which wastewater enters the treatment works and the pipes or other structures through which treated wastewater is discharged from the treatment plant. Include outfalls from bypass piping, if applicable. c. Each well where wastewater from the treatment plant is injected underground. d. Wells, springs, other surface water bodies, and drinking water wells that are: 1) within % mile of the property boundaries of the treatment works, and 2) listed in public record or otherwise known to the applicant. e. Any areas where the sewage sludge produced by the treatment works is stored, treated, or disposed. f. If the treatment works receives waste that is classified as hazardous under the Resource Conservation and Recovery Act (RCRA) by truck, rail, or special pipe, show on the map where the hazardous waste enters the treatment works and where it is treated, stored, and/or disposed. B.3. Process Flow Diagram or Schematic. Provide a diagram showing the processes of the treatment plant, including all bypass piping and all backup power sources or redunancy in the system. Also provide a water balance showing all treatment units, including disinfection (e.g., chlorination and dechlorination). The water balance must show daily average flow rates at influent and discharge points and approximate daily flow rates between treatment units. Include a brief narrative description of the diagram. B.4, Operation/Maintenance Performed by Contractor(s). Are any operational or maintenance aspects (related to wastewater treatment and effluent quality) of the treatment works the responsibility of a contractor? ❑ Yes ® No If yes, list the name, address, telephone number, and status of each contractor and describe the contractor's responsibilities (attach additional pages if necessary). Name: Mailing Address: Telephone Number: ( ) Responsibilities of Contractor: B.5. Scheduled improvements and Schedules of Implementation. Provide information on any uncompleted implementation schedule or uncompleted plans for improvements that will affect the wastewater treatment, effluent quality, or design capacity of the treatment works. If the treatment works has several different implementation schedules or is planning several improvements, submit separate responses to question B.5 for each. (If none, go to question B.6.) a. List the outfall number (assigned in question A.9) for each outfall that is covered by this implementation schedule. 001 b. Indicate whether the planned improvements or implementation schedule are required by local, State, or Federal agencies. ❑ Yes ® No EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 7 of 22 FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN: Denton WWTP, NCO026689 Renewal Yadkin/Pee Dee C. If the answer to B.5.b is "Yes," briefly describe, including new maximum daily inflow rate (if applicable). d. Provide dates imposed by any compliance schedule or any actual dates of completion for the implementation steps listed below, as applicable. For improvements planned independently of local, State, or Federal agencies, indicate planned or actual completion dates, as applicable. Indicate dates as accurately as possible. Schedule Actual Completion Implementation Stage MM/DD/YYYY MM/DD/YYYY - Begin Construction - End Construction - Begin Discharge - Attain Operational Level e. Have appropriate permits/clearances concerning other Federal/State requirements been obtained? ❑ Yes ❑ No Describe briefly: B.S. EFFLUENT TESTING DATA (GREATER THAN 0.1 MGD ONLY). Applicants that discharge to waters of the US must provide effluent testing data for the following parameters. Provide the indicated effluent testing required by the permitting authority for each outfall through which effluent is discharged. Do not Include Information on combine sewer overflows In this section. All Information reported must be based on data collected through analysis conducted using 40 CFR Part 136 methods. in addition, this data must comply with QA/QC requirements of 40 CFR Part 136 and other appropriate QA/QC requirements for standard methods for analytes not addressed by 40 CFR Part 136. At a minimum effluent testing data must be based on at least three pollutant scans and must be no more than four and on -half years old. Outfall Number: 001 MAXIMUM DAILY, AVERAGE DAILY DISCHARGE DISCHARGE ANALYTICAL POLLUTANT ML/MDL Number of METHOD Conc. Units Conc. Units Samples CONVENTIONAL AND NON CONVENTIONAL COMPOUNDS AMMONIA (as N) 8.4 mg/L 0.469 mg/L 530 EPA350.1 0.1 CHLORINE (TOTAL RESIDUAL, TRC) 47 ug/L 15.36 ug/L 630 SM4500CIG-2000 10 DISSOLVED OXYGEN 12.6 mg/L 8.6 mg/L 1247 SM45000G-2001 1.0 TOTAL KJELDAHL NITROGEN (TKN) 6.18 mg/L 1.84 mg/L 40 EPA351.1 0.20 NITRATE PLUS NITRITE NITROGEN 12.2 mg/L 3.156 mg/L 40 EPA353.2 0.10 OIL and GREASE <5 mg/L <5 mg/L 7 EPA1664A 5 PHOSPHORUS (Total) 3.28 mg/L 0.983 mg/L 42 EPA200.7 0.020 TOTAL DISSOLVED SOLIDS (TDS) 990 mg/L 691 mg/L 3 SM254OC-2001 1010 OTHER 3. EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 8 of 22 FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN: Denton WWTP, NCO026689 Renewal Yadkin/Pee Dee 3 F�tu I L R..MIT r _ ._ o.:.>+ ., ., n['s ,.. xn. .. i= L , x -' � .. �� � ' .k- !. a`.. �'1 5 .-.✓y L-: . All applicants must complete the Certification Section. Refer to instructions to determine who Is an officer for the purposes of this certification. All applicants must complete all applicable sections of Form 2A, as explained In the Application Overview. Indicate below which parts of Form 2A you have completed and are submitting. By signing this certification statement, applicants confirm that they have reviewed Form 2A and have completed all sections that apply to the facility for which this application is submitted. Indicate which parts of Form 2A you have completed and are submitting: ® Basic Application Information packet Supplemental Application Information packet: ® Part D (Expanded Effluent Testing Data) ® Part E (Toxicity Testing: Biomonitoring Data) ® Part F (Industrial User Discharges and RCRAICERCLA Wastes) ❑ Part G (Combined Sewer Systems) I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified. personnel property gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system or those persons directly responsible for gathering the information, the Information is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. Name and official title Genie Russell Town Mana er Signature --A� 21� ex4� Telephone number L1859-4231 Date signed Upon request of the permitting authority, you must submit any other information necessary to assure wastewater treatment practices at the treatment works or identify appropriate permitting requirements. SEND COMPLETED FORMS TO: NCDENR/ DWQ Attn: NPDES Unit 1617 Mail Service Center Raleigh, North Carolina 27699-1617 EPA Form 3510-2A (Rev. 1-99). Replaces EPA fortes 7550-6 & 7550-22. Page 9 of 22 FACILITY NAME AND PERMIT NUMBER: Denton WWTP, NCO026689 PERMIT ACTION REQUESTED: Renewal RIVER BASIN: Yadkin/Pee Dee Refer to the directions on the cover page to determine whether this section applies to the treatment works. Effluent Testing: 1.0 mgd and Pretreatment Works. If the treatment works has a design flow greater than or equal to 1.0 mgd or it has (or is required to have) a pretreatment program, or is otherwise required by the permitting authority to provide the data, then provide effluent testing data for the following pollutants. Provide the indicated effluent testing information and any other information required by the permitting authority for each outfall through which effluent is discharged. Do not include information on combined sewer overflows in this section. All information reported must be based on data collected through analyses conducted using 40 CFR Part 136 methods. In addition, these data must comply with QA/QC requirements of 40 CFR Part 136 and other appropriate QA/QC requirements for standard methods for analytes not addressed by 40 CFR Part 136. Indicate in the blank rows provided below any data you may have on pollutants not specifically listed in this form. At a minimum, effluent testing data must be based on at least three pollutant scans and must be no more than four and one-half years old. Outfall number. 001 (Complete once for each outtali discharging effluent to waters of the United States.) POLLUTANT MAXIMUM DAILY: DISCHARGE AVERAGE DAILY DISCHARGE ANALYTICAL METHOD MLIMDL Conc. Units Mass Units Conc. ' Units Mass Unlit Number of Samples METALS (TOTAL RECOVERABLE), CYANIDE, PHENOLS, AND HARDNESS. ANTIMONY <25 ug/L <25 ug/L 4 EPA200.7 25 ARSENIC <10 ug/L <10 ug/L 8 EPA200.7 10 BERYLLIUM <5 ug/L <5 ug/L 4 EPA200.7 5 CADMIUM <2 ug/L <2 ug/L 9 EPA200.7 2 CHROMIUM <5 ug/L <5 ug/L 8 EPA200.7 5 COPPER 25 ug/L 5.59 ug/L 44 EPA200.7 2 LEAD <10 ug/L <10 ug/L 8 EPA200.7 5 MERCURY ng/L ng/L EPA1631 1 NICKEL 2 ug/L <10 ug/L 11 EPA200.7 10 SELENIUM <10 ug/L <10 ug/L 11 EPA200.7 10 SILVER <5 ug/L <5 ug/L 4 EPA200.7 5 THALLIUM <20 ug/L <20 ug/L 3 EPA200.7 20 ZINC 102 ug/L 60.4 ug/L 43 EPA200.7 10 CYANIDE <5 ug/L <5 ug/L 4 EPA335.4 5 TOTAL PHENOLIC COMPOUNDS 0.046 mg/L 0.02 m /L 9 3 EPA420.1 10 HARDNESS (as CaCO3) 53 mg/L 50.6 mg/L 3 SM2340C 1 Use this space (or a separate sheet) to provide information on other metals requested by the permit writer EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 10 of 22 FACILITY NAME AND PERMIT NUMBER: Denton WWTP, NCO026689 PERMIT ACTION REQUESTED: Renewal RIVER BASIN: Yadkin Outfall number. 001 (Complete once for each outfall discharging effluent to waters of the United States.) POLLUTANT' MAXIMUM DAILY DISCHARGE AVERAGE DAILY DISCHARGE ANALYTICAL METHOD ML/MDL - Conc. Units Mass Units Conc. Units Mass Units Number - of Samples VOLATILE ORGANIC COMPOUNDS ACROLEIN NO ug/L NO ug/L 3 EPA624 50 ACRYLONITRILE NO ug/L NO ug/L 3 EPA624 10 BENZENE NO ug/L NO ug/L 3 EPA624 1 BROMOFORM NO ug/L NO ug/L 3 EPA624 1 CARBON TETRACHLORIDE NO ug/L NO ug/L 3 EPA624 1 CHLOROBENZENE NO ug/L NO ug/L 3 EPA624 1 CHLORODIBROMO- METHANE NO ug/L NO ug/L 3 EPA624 1 CHLOROETHANE NO ug/L NO ug/L 3 EPA624 5 ETHER ROETHYLVINYL NO ug/L NO ug/L 3 EPA624 5 CHLOROFORM 26.5 ug/L 16.0 ug/L 3 EPA624 1 DICHLOROME HANE BROMO- 5.32 ug/L 2.42 ug/L 3 EPA624 1 1,1-DICHLOROETHANE NO ug/L NO ug/L 3 EPA624 1 1,2-DICHLOROETHANE NO ug/L NO ug/L 3 EPA624 1 I,2-DICHLORO- ETHYLENE ETHYL NO ug/L NO ug/L 3 EPA624 1 1,1-DICHLORO- ETHYLENE NO ug/L NO ug/L 3 EPA624 1 1,2-DICHLOROPROPANE NO ug/L NO ug/L 3 EPA624 1 1,3-DICHLORO- PROPYLENE NO ug/L NO ug/L 3 EPA624 1 ETHYLBENZENE NO ug/L NO ug/L 3 EPA624 1 METHYL BROMIDE NO ug/L NO ug/L 3 EPA624 1 METHYL CHLORIDE NO ug/L NO ug/L 3 EPA624 1 METHYLENE CHLORIDE NO ug/L NO ug/L 3 EPA624 1 1, TETRA- CHLORLOROETHANE NO ug/L NO ug/L 3 EPA624 1 TETRACHLORO- ETHYLENE NO ug/L NO ug/L 3 EPA624 1 TOLUENE NO ug/L NO ug/L 3 EPA624 1 EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 11 of 22 FACILITY NAME AND PERMIT NUMBER: Denton WWTP, NCO026689 PERMIT ACTION REQUESTED: Renewal RIVER BASIN: Yadkin/Pee Dee Outfall number. 001 (Complete once for each outfall discharging effluent to waters of the United States.) POLLUTANT MAXIMUM DAILY DISCHARGE AVERAGE DAILY DISCHARGE ANALYTICAL METHOD MUMDL Conc. Units Mass ` Units Cone. Units Mass Units Number of Samples TRICHLOROETHANE ND ug/l ND ug/L 3 EPA624 1 1,1,2 TRICHLOROETHANE ND ug/L ND ug/L 3 EPA624 1 TRICHLOROETHYLENE ND ug/L ND ug/L 3 EPA624 1 VINYL CHLORIDE ND ug/L ND ug/L 3 EPA624 5 Use this space (or a separate sheet) to provide information on other volatile organic compounds requested by the permit writer ACID -EXTRACTABLE COMPOUNDS P-CHLORO-M-CRESOL ND ug/L ND ug/L 3 EPA625 10 2-CHLOROPHENOL ND ug/L ND ug/L 3 EPA625 10 2,4-DICHLOROPHENOL ND ug/L ND ug/L 3 EPA625 10 2,4-DIMETHYLPHENOL ND ug/L ND ug/L 3 EPA625 10 4,6-DINITRO-0-CRESOL ND ug/L ND ug/L 3 EPA625 50 2,4-DINITROPHENOL ND ug/L ND ug/L 3 EPA625 50 2-NITROPHENOL ND ug/L ND ug/L 3 EPA625 10 4-NITROPHENOL ND ug/L ND ug/L 3 EPA625 50 PENTACHLOROPHENOL ND ug/L ND ug/L 3 EPA625 50 PHENOL ND ug/L ND ug/L 3 EPA625 10 TRIC RIOHLOROPHENQL ND ug/L ND ug/L 3 EPA625 10 Use this space (or a separate sheet) to provide information on other acid -extractable compounds requested by the permit writer BASE -NEUTRAL COMPOUNDS ACENAPHTHENE ND ug/L ND ug/L 3 EPA625 10 ACENAPHTHYLENE ND ug/L ND ug/L 3 EPA625 10 ANTHRACENE ND ug/L ND ug/L 3 EPA625 10 BENZIDINE ND ug/L ND ug/L 3 EPA625 50 BENZO(A)ANTHRACENE ND ug/L ND ug/L 3 EPA625 10 BENZO(A)PYRENE ND ug/L ND ug/L 3 EPA625 10 EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 12 of 22 FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN: Denton WWTP , NCO026689 Renewal Yadkin/Pee Dee Outfall number. 001 (Complete once for each outfall discharging effluent to waters of the United States.) MAXIMUM DAILY DISCHARGE AVERAGE DAILY DISCHARGE POLLUTANT ANALYTICAL MLIMDL Number Conc. Units Mass Units Conc. Units Mass Units of METHOD Samples 3,4 BENZO- FLUORANTHENE NO ug/L ND ug/L 3 EPA625 10 BENZO(GHI)PERYLENE ND ug/L ND ug/L 3 EPA625 10 BENZO(I) FLUORANTHENE ND ug/L ND ug/L 3 EPA625 10 BIS OROETHO)CY) METHANEHAKE ND ug/L ND ug/L 3 EPA625 10 BIS CHLOROETHYL)- ETHER ND ug/L ND ug/L 3 EPA625 10 BIS (2-CHL - PROPYL)EETHER THER ND ug/L NO ug/L 3 EPA625 10 BIS (2-ETHYLHEXYL) PHTHALATE 49.5 ug/L 16.5 ug/L 3 EPA625 10 4-13ROMOPHENYL R PHENYLETHER PHENYE ND ug/L ND ug/L 3 EPA625 10 BUTYL BENZYL PHTHALATE H NAPHTTHALHAL ENE NA ND ug/L ND ug/L 3 EPA625 10 R P PHENY HENYL ETHER ND ug/L NO ug/L 3 EPA625 10 CHRYSENE ND ug/L ND ug/L 3 EPA625 10 DI-N-BUTYL PHTHALATE ND ug/L ND ug/L 3 EPA625 10 DI-N-OCTYL PHTHALATE ND ug/L ND ug/L 3 EPA625 10 THR ANTHRACENE EN ND ug/L NO ug/L 3 EPA625 10 1,2-DICHLOROBENZENE ND ug/L NO ug/L 3 EPA625 10 1,3-DICHLOROBENZENE ND ug/L ND ug/L 3 EPA625 10 1,4-DICHLOROBENZENE ND ug/L NO ug/L 3 EPA625 10 3,3-DICHLORO- BENZIDINE ND ug/L ND ug/L 3 EPA625 50 DIETHYL PHTHALATE ND ug/L ND ug/L 3 EPA625 10 DIMETHYL PHTHALATE ND ug/L ND ug/L 3 EPA625 10 2,4-DINITROTOLUENE ND ug/L NO ug/L 3 EPA625 10 2,6-DINITROTOLUENE ND ug/L ND ug/L 3 EPA625 10 1, NYL- HYDRAZINE NE ND u /L g ND ug/L g 3 EPA625 10 EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 13 of 22 FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN: Denton WWTP, NCO026689 Renewal Yadkin/Pee Dee Outfall number: 001 (Complete once for each outfall discharging effluent to waters of the United States.) MAXIMUM DAILY DISCHARGE AVERAGE DAILY DISCHARGE POLLUTANT ANALYTICAL ML/MDL Number Conc. Units Mass Units Conc. Units' Mass Units of METHOD Samples FLUORANTHENE ND ug/L ND ug/L 3 EPA625 10 FLUORENE NO ug/L ND ug/L 3 EPA625 10 HEXACHLOROBENZENE NO ug/L ND ug/L 3 EPA625 10 HEXACHLORO- ND ug/L ND ug/L 3 EPA625 10 BUTADIENE HEXACHLOROCYCLO- ND ug/L NO ug/L 3 EPA625 s0 PENTADIENE HEXACHLOROETHANE ND ug/l ND ug/I 3 EPA625 10 INDENO(1,2,3-CD) ND ug/I NO ug/L 3 EPA625 10 PYRENE ISOPHORONE ND ug/L NO ug/L 3 EPA625 10 NAPHTHALENE ND ug/L ND ug/L 3 EPA625 10 NITROBENZENE ND ug/L ND ug/I 3 EPA625 10 N-NITROSODI-N- ND ug/L ND ug/L 3 EPA625 10 PROPYLAMINE N-NITROSODI- METHYLAMINE ND ug/L NO ug/L 3 EPA625 10 N-NITROSODI- PHENYLAMINE NO ug/L ND ug/L 3 EPA625 10 PHENANTHRENE ND ug/L ND ug/L 3 EPA625 10 PYRENE ND ug/L ND ug/L 3 EPA625 10 1,2,4- TRICHLOROBENZENE NO ug/L ND ug/L 3 EPA625 10 Use this space (or a separate sheet) to provide information on other base -neutral compounds requested by the permit writer Use this space (or a separate sheet) to provide information on other pollutants (e.g., pesticides) requested by the permit writer r+ rs ss R rY�► i !/x 11fIJQIX1r�}a r s EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7560-22. Page 14 of 22 FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN: Denton WWTP, NCO026689 Renewal Yadkin RW Y :Nr _ POTWs meeting one or more of the following criteria must provide the results of whole effluent toxicity tests for acute or chronic toxicity for each of the facility's discharge points: 1) POTWs with a design flow rate greater than or equal to 1.0 mgd; 2) POTVVs with a pretreatment program (or those that are required to have one under 40 CFR Part 403); or 3) POTVVs required by the permitting authority to submit data for these parameters. • At a minimum, these results must include quarterly testing for a 12-month period within the past 1 year using multiple species (minimum of two species), or the results from four tests performed at least annually in the four and one-half years prior to the application, provided the results show no appreciable toxicity, and testing for acute and/or chronic toxicity, depending on the range of receiving water dilution. Do not include information on combined sewer overflows in this section. All information reported must be based on data collected through analysis conducted using 40 CFR Part 136 methods. In addition, this data must comply with QAlQC requirements of 40 CFR Part 136 and other appropriate QA/QC requirements for standard methods for analytes not addressed by 40 CFR Part 136. • In addition, submit the results of any other whole effluent toxicity tests from the past four and one-half years. If a whole effluent toxicity test conducted during the past four and one-half years revealed toxicity, provide any information on the cause of the toxicity or any results of a toxicity reduction evaluation, if one was conducted. • If you have already submitted any of the information requested in Part E, you need not submit it again. Rather, provide the information requested in question EA for previously submitted information. If EPA methods were not used, report the reasons for using alternate methods. If test summaries are available that contain all of the information requested below, they may be submitted in place of Part E. If no biomonitoring data is required, do not complete Part E. Refer to the Application Overview for directions on which other sections of the form to complete. E.1. Required Tests. Indicate the number of whole effluent toxicity tests conducted in the past four and one-half years. ® chronic ❑ acute E.2. Individual Test Data. Complete the following chart for each whole effluent toxicity test conducted in the last four and one-half Years. Allow one column per test (where each species constitutes a test). Copy this page if more than three tests are being reported. Test number: Ju109 Test number: Aug09 Test number: Aug09 a. Test information. Test Species & test method number Ceriodaphnia Ceriodaphnia Fathead Minnow Age at initiation of test 21.3 hours 22.6 hours 24 hours Outfall number 001 001 001 Dates sample collected 7/13/09,7/15/09 8/17/09,8/19/09 8/17/09,8/18/09,8/19112 Date test started 7/15/09 8/19/09 8/19109 Duration 7 days 7 days 7 days b. Give toxicity test methods followed. Manual title Short Term methods for Estimating the Chronic Toxicity of Efffluent and Receiving waters to Fresh Water Organisms Edition number and year of publication 4th edition 1994 EPA-600-4- 4th edition 1994 EPA-600- 4th edition 1994 EPA- 91-002 4-91-002 600-4-91-002 Page number(s) 58 -108 c. Give the sample collection method(s) used. For multiple grab samples, indicate the number of grab samples used. 24-Hour composite X X X Grab d. Indicate where the sample was taken in relation to disinfection. (Check all that apply for each. Before disinfection After disinfection X X X After dechlorination X X X EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 15 of 22 FACILITY NAME AND PERMIT NUMBER: Denton WWTP, NCO026689 PERMIT ACTION REQUESTED: Renewal RIVER BASIN: Yadkin/Pee Dee Test number: Ju109 Test number: Aug09 Test number: Aug09 e. Describe the point in the treatment process at which the sample was collected. Sample was collected: After C12 & S02 at overflow weir After Cl2 & S02 at overflow weir After Cl2 & S02 at overflow weir f. For each test, include whether the test was intended to assess chronic toxicity, acute toxicity, or both Chronic toxicity X X X Acute toxicity g. Provide the type of test performed. Static Static -renewal X X X Flow -through h. Source of dilution water. If laboratory water, specify type; if receiving water, specify source. Laboratory water Receiving water Lake Reidsville Lake Reidsville Lake Reidsville i. Type of dilution water.. If salt water, specify "natural' or type of artificial sea salts or brine used. Fresh water X X X Salt water j. Give the percentage effluent used for all concentrations in the test series. 22.6%, 45%, 75%, 90%, 100% 90% 22.5%, 45%, 76%, 90%, 100% k. Parameters measured during the test. (State whether parameter meets test method specifications) pH Yes Yes Yes Salinity No No No Temperature Yes Yes Yes Ammonia No No No Dissolved oxygen Yes Yes Yes I. Test Results. Acute: Percent survival in 100% effluent LC50 95% C.I. % % % Control percent survival % % % Other (describe) EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 16 of 22 FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN: Denton WWTP, NCO026689 Renewal Yadkin/Pee Dee Chronic: NOEC 100% % % IC25 % % % Control percent survival 100% 100% 100% Other (describe) >100% PASS PASS m. Quality Control/Quality Assurance. Is reference toxicant data available? Yes Yes Yes Was reference toxicant test within acceptable bounds? Yes Yes Yes What date was reference toxicant test run (MWDD/YYYY)? 07/22/09 08/12/09 11 /18/09 Other (describe) E.3. Toxicity Reduction Evaluation. Is the treatment works involved in a Toxicity Reduction Evaluation? ❑ Yes ® No If yes, describe: E.4. Summary of Submitted Biomonitoring Test Information. If you have submitted biomonitoring test information, or information regarding the cause of toxicity, within the past four and one-half years, provide the dates the information was submitted to the permitting authority and a summary of the results. Date submitted: / / (MM/DD/YYY`n Summary of results: (see instructions) �'_ {,}�� �}�.VYY'br' iy'a 1. YyF -. �)�I1, �'. i �^-E 4 3' : M+L� .vi„ S' h ' J��!�yfa'+ tTL«Y,+a*■ ,� Y W � -.: � � E .,5-� M � �jI '� fiAd[� F cE ■Y��{�' 'i 4 "��,y,L{71' r+� h 2� - Sy �`� �. EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 17 of 22 FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN: Denton WWTP, NCO026689 Renewal Yadkin x `1PP�1'R4 PLI�A�'tC�k3��A(���'1�,� z 3 � $ � x� L � r k".hi { S y' 4 t k s �„ n''= .i � i J C.�� S i ,('✓r '£ 'S� t{ 4. 3 :. Yfi L' ... POTWs meeting one or more of the following criteria must provide the results of whole effluent toxicity tests for acute or chronic toxicity for each of the facility's discharge points: 1) POTWs with a design flow rate greater than or equal to 1.0 mgd; 2) POTWs with a pretreatment program (or those that are required to have one under 40 CFR Part 403), or 3) POTWs required by the permitting authority to submit data for these parameters. • At a minimum, these results must include quarterly testing for a 12-month period within the past 1 year using multiple species (minimum of two species), or the results from four tests performed at least annually in the four and one-half years prior to the application, provided the results show no appreciable toxicity, and testing for acute and/or chronic toxicity, depending on the range of receiving water dilution. Do not include information on combined sewer overflows in this section. All information reported must be based on data collected through analysis conducted using 40 CFR Part 136 methods. In addition, this data must comply with QA/QC requirements of 40 CFR Part 136 and other appropriate QA/QC requirements for standard methods for analytes not addressed by 40 CFR Part 136. • In addition, submit the results of any other whole effluent toxicity tests from the past four and one-half years. If a whole effluent toxicity test conducted during the past four and one-half years revealed toxicity, provide any information on the cause of the toxicity or any results of a toxicity reduction evaluation, if one was conducted. • If you have already submitted any of the information requested in Part E, you need not submit it again. Rather, provide the information requested in question EA for previously submitted information. If EPA methods were not used, report the reasons for using aitemate methods. If test summaries are available that contain all of the information requested below, they may be submitted in place of Part E. If no biomonitoring data is required, do not complete Part E. Refer to the Application Overview for directions on which other sections of the form to complete. E.1. Required Tests. Indicate the number of whole effluent toxicity tests conducted in the past four and one-half years. ® chronic ❑ acute E.2. Individual Test Data. Complete the following chart for each whole effluent toxicity test conducted in the last four and one-half years. Allow one column per test (where each species constitutes a test). Copy this page if more than three tests are being reported. Test number. Mav13 Test number. Jun13 Test number. a. Test information. Test Species & test method number Ceriodaphnia Fathead Minnow Age at initiation of test 22.17 hours 40 hours Outfall number 001 001 Dates sample collected 5/20113,5122/13 6/3/13,6/5/13,6/6/13 Date test started 5/22/13 6/5/13 Duration 7 days 7 days b. Give toxicity test methods followed. Manual title Short Term methods for Estimating the Chronic Toxicity of Efffluent and Receiving waters to Fresh Water Organisms Edition number and year of publication 4th edition 1994 EPA-600-4- 4th edition 1994 EPA-600- 91-002 4-91-002 Page number(s) 58 -108 58 -108 c. Give the sample collection method(s) used. For multiple grab samples, indicate the number of grab samples used. 24-Hour composite X X Grab d. Indicate where the sample was taken in relation to disinfection. (Check all that apply for each. Before disinfection After disinfection X X After dechlorination X X EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 15 of 22 FACILITY NAME AND PERMIT NUMBER: Denton WWTP, NCO026689 PERMIT ACTION REQUESTED: Renewal RIVER BASIN: Yadkin/Pee Dee Test number: May13 Test number. Jun13 Test number. e. Describe the point In the treatment process at which the sample was collected. Sample was collected: After Cl2 & S02 at overflow weir I After Cl2 & S02 at overflow --T weir f. For each test, include whether the test was intended to assess chronic toxicity, acute toxicity, or both Chronic toxicity X X Acute toxicity g. Provide the type of test performed. Static Static -renewal X X Flow -through h. Source of dilution water. If laboratory water, specify type; if receiving water, specify source. Laboratory water Receiving water Lake Hunt Lake Hunt I. Type of dilution water. If salt water, specify "natural" or type of artificial sea salts or brine used. Fresh water X X Salt water j. Give the percentage effluent used for all concentrations in the test series. 90% 22.5%,45%,75%,90%,100% k. Parameters measured during the test. (State whether parameter meets test method specifications) pH Yes Yes Salinity No No Temperature Yes Yes Ammonia No No Dissolved oxygen Yes Yes I. Test Results. Acute: Percent survival in 100% effluent LC50 95% C.I. % % % Control percent survival % % % Other (describe) EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 16 of 22 FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN: Denton WWTP, NCO026689 Renewal Yadkin/Pee Dee k5^"? �.#il t���%�y Tr i3v.. Y }�(�� 1 h✓` y �'i�+'i.l � r L^'t �- � � � r � * iAi $ �` � � ��»��ul[[�i' 4 '� $a�$: 4�� 4 "' �^. `v 9' k ✓�"4 W..1 � ' -t � �� °9 �u a All treatment works receiving discharges from significant industrial users or which receive RCRA,CERCLA, or other remedial wastes must complete part F. GENERAL INFORMATION: F.I. Pretreatment program. Does the treatment works have, or is subject ot, an approved pretreatment program? ® Yes ❑ No F.2. Number of Significant Industrial Users (SIUs) and Categorical Industrial Users (CIUs). Provide the number of each of the following types of industrial users that discharge to the treatment works. a. Number of non -categorical SIUs. 2 b. Number of CIUs. 0 SIGNIFICANT INDUSTRIAL USER INFORMATION: Supply the following information for each SIU. If more than one SIU discharges to the treatment works, copy questions F.3 through F.8 and provide the Information requested for each SIU. F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages as necessary. Name: Century Hosiery Mailing Address: 41 East Salisbury St. Denton NC 27239 F.4. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge. Sock dying operation process water F.5. Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's discharge. Principal product(s): Socks Raw material(s): Textile Dyes. Salts and bleach F.S. Flow Rate. a. Process wastewater flow rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per day (gpd) and whether the discharge is continuous or intermittent. 28.500 gpd ( continuous or X intermittent) b. Non -process wastewater flow rate. Indicate the average daily volume of non -process wastewater flow discharged into the collection system in gallons per day (gpd) and whether the discharge is continuous or intermittent. 295 gpd ( continuous or X intermittent) F.T. Pretreatment Standards. Indicate whether the SIU is subject to the following: a. Local limits ® Yes ❑ No b. Categorical pretreatment standards ❑ Yes ® No If subject to categorical pretreatment standards, which category and subcategory? EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 18 of 22 FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN: Denton WINTP, NCO026689 Renewal Yadkin/Pee Dee F.8. Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e.g., upsets, interference) at the treatment works in the past three years? ❑ Yes ID No If yes, describe each episode. RCRA HAZARDOUS WASTE RECEIVED BY TRUCK, RAIL, OR DEDICATED PIPELINE: F.9. RCRA Waste. Does the treatment works receive or has it in the past three years received RCRA hazardous waste by truck, rail or dedicated pipe? ❑ Yes ® No (go to F.12) F.10. Waste transport. Method by which RCRA waste is received (check all that apply): ❑ Truck ❑ Rail ❑ Dedicated Pipe F.11. Waste Description. Give EPA hazardous waste number and amount (volume or mass, specify units). EPA Hazardous Waste Number Amount Units CERCLA (SUPERFUND) WASTEWATER, RCRA REMEDIATION/CORRECTIVE ACTION WASTEWATER, AND OTHER REMEDIAL ACTIVITY WASTEWATER: F.12. Remediation Waste. Does the treatment works currently (or has it been notified that it will) receive waste from remedial activities? ❑ Yes (complete F.13 through F.15.) ® No F.13. Waste Origin. Describe the site and type of facility at which the CERCLA/RCRA/or other remedial waste originates (or is excepted to origniate in the next five years). F.14. Pollutants. List the hazardous constituents that are received (or are expected to be received). Include data on volume and concentration, if known. (Attach additional sheets if necessary.) F.15. Waste Treatment a. Is this waste treated (or will be treated) prior to entering the treatment works? ❑ Yes ® No If yes, describe the treatment (provide information about the removal efficiency): b. Is the discharge (or will the discharge be) continuous or intermittent? ❑ Continuous ® Intermittent If intermittent, describe discharge schedule. Flow from business only during business hours Currently two shifts 7 AM to 11 PM This may chance T�� �� �� `'i J �._� S_ "` Y e` �K74�.■ N `e4.y�{Y ?.r�%' �'iYrf t.i."lC TiPIIL�!�l�1/((fA 'I) Tb�RIIIN N11-C (5 2�U115T314- 1 ,, t <� EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-8 & 7550-22. Page 19 of 22 WA 4 1 NCDENR North Carolina Department of Environment and Natural Resources Pat McCrory Governor Mr. John L. Gray, Interim Town Manager Town of Denton P.O. Box 306 Denton, NC 272390306 Subject: NOTICE OF VIOLATION LV-2013-LV-0654 Permit No. NCO026689 Denton WWTP Davidson County Dear Mr. Gray: Division of Water Resources Water Quality Programs Thomas A. Reeder Director October 24, 2013 A review of Denton WWTP's monitoring report for July 2013 showed the following violation: John E. Skvarla, III Secretary Parameter Date Limit Value Reported Value Limit Type Coliform, Fecal 07/27/13 400 #/100ml 709 #/100ml Weekly Geometric Mean Exceeded Remedial actions, if not already implemented, should be taken to correct the above noncompliance problem. Please be aware that violations of your NPDES permit could result in enforcement action by the Division of Water Quality for this and any additional violations of State law. If you should have any questions, please do not hesitate to contact Jenifer Carter at (336) 771-4957. cc: SWP — Central Files WSRO Files North Carolina Division of Water Resources, Winston-Salem Regional Office Location: 585 Waughtown St. Winston-Salem, North Carolina 27107 Phone: 336-771-50001 FAX: 336-771-46301 Customer Service: 1-877-623-6748 Internet: www.ncwater.org Sincerely, W. Corey Basinger Regional Supervisor Water Quality Regional Operations Section Division of Water Resources NorthCarolina Naturally An Equal Opportunity, Affirmative Action Employer W , 060 Cover Sheet from No�� go �� Staff Member to Regional Supervisor DNIR Review Record Facility.: kn�On UWF1P Permit/Pipe No.:/V'002WMonth/Year aUl3 Monthly Average Violations Parameter Permit Limit DMR Value % Over Limit ee aily Violations Date Parameter Permit Lirnit/Tv e DMR Value % Over Limit Monitoring Frequency Violations Date Parameter Permit Frequency Values Reported # of Violations Other Violations ZA5� /Z /1/lckAw'g." my moy - ozvice. - v Completed by: T- Regional Water Quality Supervisor Signoff: Date: /c)1a,3/// Date: 23 Our" 3 tDJ Michael Shane Parrish 2740 Cid Road Thomasville, NC 27292 Operator Certification ID# 998242 June 12, 2013 NCDENR Division of Water Quality 585 Waughtown Street Winston-Salem, NC 27107 Attn: Jenifer Carter Subject: Vacating Back-up ORC position Dear Mrs. Carter, �("A s RECEIVED N N.C.Dept. of ENR JUN 14 2013 Winston-Salem R Tonal Office As per 15A NCAC 08G .0205 1 am notifying you that as of July 1, 2013 1 am no longer the back-up Operator in Responsible Charge (ORC) of the Denton WWTP. Thank you for your understanding and assistance through my time in Denton. I look forward to continuing to work with you in the future. If you have any questions you may contact me at 336-250- 6680 or Mr. Troy B. Branch the ORC of Denton WWTP at 336-859-4460. Sincerely, M Michael Shane Parrish ►� 'A ) 7i'n j� NCDENR North Carolina Department of Environment and Natural Resources Division of Water Quality Pat McCrory Charles Wakild, P.E. Governor Director May 7, 2013 Mr. Victor Pizzurro, Town Manager Town of Denton P.O. Box 306 Denton, NC 27239-0306 SUBJECT: Compliance Evaluation Inspection Town of Denton WWTP NPDES Permit #NC0026689 Davidson County Dear Mr. Pizzurro: John E. Skvarla, III Secretary A compliance Evaluation Inspection was performed at the Town of Denton's WWTP on May 16, 2013 by Jenifer Carter of the Winston-Salem Regional Office. Troy Branch, Operator in Responsible Charge (ORC), and Shane Parrish (back-up ORC) were present for the inspection. This type of inspection consists of an in office review of facility records and an on -site inspection of the facility. Facility Records Review: Self -monitoring data for the period of January 2011 through December 20112 showed several permit limits violations, all of which have previously been addressed through the Division's regular monthly enforcement program. Permit records, including maintenance logs, ORC visitation logs and calibration records were well organized and complete. ORC visitation logs revealed Grade 1 certified operator, Travis Morris, to be the most frequent assistant to Mr. Branch. Mr. Morris may assist Mr. Branch, as long as he is not acting in Mr. Branch's absence as a back-up ORC in order to meet the WWTP's minimum visitation requirements. At Class III facility like Denton's WWTP, a back-up ORC being utilized in order to meet visitation requirements must hold a minimum of a Grade II certification. Mr. Branch is responsible for visiting the treatment system at least 5 days per week, excluding holidays. A properly certified back-up ORC can act as surrogate for the ORC for up to 20 percent of the system visitations required per calendar year. Site Inspection: There was foaming throughout the plant, though none was visible in the chlorine contact chamber or in the effluent. Mr. Branch believed the foam was due to an overabundance of filamentous bacteria in the activated sludge. He had ordered a de -foaming agent as well as chemicals for pH adjustment, and plans to use both to help restore balance to the plant and, thereby stop the excessive foaming and improve settleability. North Carolina Division of Water Quality, Winston-Salem Regional Office Location: 585 Waughtown Street, Winston-Salem, NC 27107 Phone: (336) 771-50001 Fax: (336) 771-46301 Customer Service:1-877-623-6748 Internet: http://portal.ncdenr.org/weblwq ...continued on reverse None Carolina Aaturallry An Equal Opportunity 1 Affirmative Action Employer Aside from the foam, the plant appeared to be operating sufficiently. One of the refrigerated samplers had a door that would not stay shut, making it difficult to maintain the proper storage temperature. Mr. Branch said there were already plans in place to replace the refrigerator. Mr: Branch continues to maintain all records in excellent order and operates the plant to its maximum capability. Should you have any questions please contact Ms. Jenifer Carter in our Winston-Salem Regional Office at (336) 771-4957. Sincerely, 1 UJ,u% % . NV,4 W. Corey Basinger Surface Water Regional Supervisor Winston-Salem Regional Office Division of Water Quality cc: Troy Branch (same address) SWP-Central Files .WSRO Files United States Environmental Protection Agency Form Approved. EPA Washington, D.C. 20460 OMB No. 2040-0057 Approval expires 8-31-98 Section A: National Data System Coding (i.e., PCS) Transaction Code NPDES yr/mo/day Inspection Type Inspector Fac Type 1 I N I 2 1 5 I 31 NCO026689 111 121 13/05/16 117 181 C I 191 c I 201 I LJ I.J l J IJ LJ Remarks 21111111111111111111111111111111111111111111111116 Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA ---- —---- —-------- Reserved----------------- 67 I 169 70 U 71) N 72 ) N 73 L U 74 751 I I I I I Li 80 �' ��----�� Section B: Facility Data Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include Entry Time/Date Permit Effective Date POTW name and NPDES permit Number) 10:00 AM 13/05/16 09/11/01 Denton WWTP Exit Time/Date Permit Expiration Date NCSR 2569 Denton NC 27239 12:00 PM 13/05/16 14/01/31 Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) Other Facility Data /// Troy B Branch/ORC/336-859-4460/ Name, Address of Responsible Official/Title/Phone and Fax Number Contacted Scott Morris,PO Box 306 Denton NC 272390306//336-859-5885/3368593381 No Section C: Areas Evaluated During Inspection Check only those areas evaluated) Permit 0 Flow Measurement Operations & Maintenance Records/Reports Self -Monitoring Program 0 Sludge Handling Disposal Facility Site Review Effluent/Receiving Waters Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) (See attachment summary) Name(s) and Signature(s) of Inspector(s) Agency/Office/Phone and Fax Numbers Date Jenifer Carter WSRO WQ//336-771-5000/ Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page # 1 W NPDES yr/mo/day Inspection Type (cont.) 1 3 NC0026689 11 12, 13/05/16 17 18U Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) Self -monitoring data for the period of January 2011 through December 20112 showed several permit limits violations, all of which have previously been addressed through the Division's regular monthly enforcement program. Permit records, including maintenance logs, ORC visitation logs and calibration records were well organized and complete. ORC visitation logs revealed Grade 1 certified operator, Travis Morris, to be the most frequent assistant to Mr. Branch. Mr. Morris may assist Mr. Branch, as long as he is not acting in Mr. Branch's absence as a back-up ORC in order to meet the WWTP's minimum visitation requirements. At Class III facility like Denton's WWTP, a back-up ORC being utilized in order to meet visitation requirements must hold a minimum of a Grade II certification. Mr. Branch is responsible for visiting the treatment system at least 5 days per week, excluding holidays. A properly certified back-up ORC can act as surrogate for the ORC for up to 20 percent of the system visitations required per calendar year. Page # 2 I Permit: NCO026689 Owner - Facility: Denton WWTP Inspection Date: 05/16/2013 Inspection Type: Compliance Evaluation Permit Yes No NA NE (If the present permit expires in 6 months or less). Has the permittee submitted a new application? Q ❑ ■ Is the facility as described in the permit? 000 0 # Are there any special conditions for the permit? Q ■ Q Is access to the plant site restricted to the general public? ■ 0 O 0 Is the inspector granted access to all areas for inspection? ■ 0 0 0 Comment: Record Keeping Yes No NA NE Are records kept and maintained as required by the permit? ■ 0 0 D Is all required information readily available, complete and current? ■ 00 0 Are all records maintained for 3 years (lab. reg. required 5 years)? ■ 00 O Are analytical results consistent with data reported on DMRs? ■ O Q Is the chain -of -custody complete? ■ 00 Q Dates, times and location of sampling ' 0 Name of individual performing the sampling O Results of analysis and calibration ❑ Dates of analysis Q Name of person performing analyses 0 Transported COCs Are DMRs complete: do they include all permit parameters? ■ 000 Has the facility submitted its annual compliance report to users and DWQ? ■ 0 0 O (If the facility is = or > 5 MGD permitted flow) Do they operate 24/7 with a certified operator on each shift? 0 O ■ Is the ORC visitation log available and current? ■ O 0 Is the ORC certified at grade equal to or higher than the facility classification? ■0 O Is the backup operator certified at one grade less or greater than the facility classification? ■0 0 0 Is a copy of the current NPDES permit available on site? ■ ❑ Q O Facility has copy of previous year's Annual Report on file for review? ■D ❑ Comment: Make sure Mr. Travis Morris is not acting as a back-up ORC, unless he obtains a Grade II wastewater operator license. Influent Sampling Yes No NA NE # Is composite sampling flow proportional? I] 0 ■ ❑ Page # 3 9 Permit: NCO026689 Owner -Facility: DentonWWTP Inspection Date: 05/16/2013 Inspection Type: Compliance Evaluation Influent Sampling Yes No NA NE Is sample collected above side streams? ■ ❑ ❑ ❑ Is proper volume collected? ■ ❑ ❑ ❑ Is the tubing clean? ■ ❑ ❑ ❑ # Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees Celsius)? ■ ❑ ❑ ❑ Is sampling performed according to the permit? ■ ❑ ❑ ❑ Comment: Make sure refrigerator is able to maintain proper storage temperature. Effluent Sampling Yes No NA NE Is composite sampling flow proportional? ■ ❑ ❑ ❑ Is sample collected below all treatment units? ■ ❑ ❑ ❑ Is proper volume collected? ■ ❑ ❑ ❑ Is the tubing clean? ■ ❑ ❑ ❑ # Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees Celsius)? ■ ❑ ❑ ❑ Is the facility sampling performed as required by the permit (frequency, sampling type representative)? ■ ❑ ❑ ❑ Comment: make sure refrigerated sampler is operating properly in oder to maintain proper temperature Flow Measurement - Effluent Yes No NA NE # Is flow meter used for reporting? ■ ❑ ❑ ❑ Is flow meter calibrated annually? ■ ❑ ❑ ❑ Is the flow meter operational? ■ ❑ ❑ ❑ (If units are separated) Does the chart recorder match the flow meter? ❑ ❑ ■ ❑ Comment: Calibration last checked on March 8, 2013. Operations & Maintenance Yes No NA NE Is the plant generally clean with acceptable housekeeping? ■ ❑ ❑ ❑ Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable Solids, pH, DO, Sludge ■ ❑ ❑ ❑ Judge, and other that are applicable? Comment: Standby Power Yes No NA NE Is automatically activated standby power available? ■ ❑ ❑ ❑ Is the generator tested by interrupting primary power source? ■ ❑ ❑ ❑ Is the generator tested under load? ■ ❑ ❑ ❑ Was generator tested & operational during the inspection? ■ ❑ ❑ ❑ Page # 4 1 Permit: NCO026689 Owner - Facility: Denton WWTP Inspection Date: 05/16/2013 Inspection Type: Compliance Evaluation Standby Power Yes No NA NE Do the generator(s) have adequate capacity to operate the entire wastewater site? 0 ❑ Q ❑ Is there an emergency agreement with a fuel vendor for extended run on back-up power? m0013 Is the generator fuel level monitored? 0 Q ❑ Q Comment: The generator is automatically run monthly and can power the entire plant if the the sludge tanks are not aerated. Pump Station - Influent Yes No NA NE Is the pump wet well free of bypass lines or structures? 0 ❑ Q Q Is the wet well free of excessive grease? 0 ❑ ❑ Q Are all pumps present? 0 Q Are all pumps operable? 0 ❑ ❑ ❑ ❑ ❑ N O Are float controls operable? Is SCADA telemetry available and operational? Q N ❑ Q Is audible and visual alarm available and operational? 0 ❑ Q Comment: Yes No NA NE Type of bar screen a.Manual b.Mechanical Are the bars adequately screening debris? Q 0 O O Q Q Is the screen free of excessive debris? Is disposal of screening in compliance? 0 0 0 Is the unit in good condition? Q 0 0 Comment: Helisieve utilized in conjunction with course manual barscreen. Oxidation Ditches Yes No NA NE Are the aerators operational? O Q Are the aerators free of excessive solids build up? # Is the foam the proper color for the treatment process? Q Q Does the foam cover less than 25% of the basin's surface? Q N 11 Is the DO level acceptable? 0 ❑ Are settleometer results acceptable (> 30 minutes)? ❑ 0 Q 0 Page # 5 Permit: NCO026689 Owner - Facility: Denton WWTP Inspection Date: 05/16/2013 Inspection Type: Compliance Evaluation Oxidation Ditches Yes No NA NE Is the DO level acceptable?(1.0 to 3.0 mg/1) ■ ❑ ❑ ❑ Are settelometer results acceptable?(400 to 800 ml/I in 30 minutes) ❑ ❑ ❑ ■ Comment: ORC said there is a problem with filamentous bacteria causing excessive sludge and poor settling. He has ordered de -foaming agent and pH adjustment. Secondary Clarifier Yes No NA NE Is the clarifier free of black and odorous wastewater? ■ ❑ ❑ ❑ Is the site free of excessive buildup of solids in center well of circular clarifier? ■ ❑ ❑ ❑ Are weirs level? ■ ❑ ❑ ❑ Is the site free of weir blockage? ■ ❑ ❑ ❑ Is the site free of evidence of short-circuiting? ■ ❑ ❑ ❑ Is scum removal adequate? ■ ❑ ❑ ❑ Is the site free of excessive floating sludge? ❑ ■ ❑ ❑ Is the drive unit operational? ■ ❑ ❑ ❑ Is the return rate acceptable (low turbulence)? ■ ❑ ❑ ❑ Is the overflow clear of excessive solids/pin floc? ■ ❑ ❑ ❑ Is the sludge blanket level acceptable? (Approximately''% of the sidewall depth) ❑ ❑ ❑ ■ Comment: The foaming in the plant did not seem to make it past the secondary clarifiers. Chemical Feed Yes No NA NE Is containment adequate? ■ ❑ ❑ ❑ Is storage adequate? ■ ❑ ❑ ❑ Are backup pumps available? ❑ ❑ ❑ ■ Is the site free of excessive leaking? 000 ❑ Comment: Filtration (High Rate Tertiary) Yes No NA NE Type of operation: Down flow Is the filter media present? ■ ❑ ❑ ❑ Is the filter surface free of clogging? ■ ❑ ❑ ❑ Is the filter free of growth? ■ ❑ ❑ ❑ Is the air scour operational? ■ ❑ ❑ ❑ Page # 6 Permit: NCO026689 Owner - Facility: Denton WWTP Inspection Date: 05/16/2013 Inspection Type: Compliance Evaluation Filtration (High Rate Tertiary) Yes No NA NE Is the scouring acceptable? E O Q 0 Is the clear well free of excessive solids and filter media? E ❑ Q 0 Comment: Disinfection -Gas Yes No NA NE Are cylinders secured adequately? MOO 0 Are cylinders protected from direct sunlight? Q O Is there adequate reserve supply of disinfectant? 0 Q ❑ Is the level of chlorine residual acceptable? O 0 Is the contact chamber free of growth, or sludge buildup? ❑ E! 0 Is there chlorine residual prior to de -chlorination? 0 Q 0 Does the Stationary Source have more than 2500 Ibs of Chlorine (CAS No. 7782-50-5)? 0 O 0 E If yes, then is there a Risk Management Plan on site? 0 Q If yes, then what is the EPA twelve digit ID Number? (1000- - ) If yes, then when was the RMP last updated? Comment: De -chlorination Yes No NA NE Type of system ? Gas Is the feed ratio proportional to chlorine amount (1 to 1)? 0 0 0 0 Is storage appropriate for cylinders? 0000 # Is de -chlorination substance stored away from chlorine containers? E 0 Q 0 Comment: Are the tablets the proper size and type? 0000 Are tablet de -chlorinators operational? Q Q N 0 Number of tubes in use? Comment: Aerobic Digester Yes No NA NE Is the capacity adequate? 0 0 ❑ O Is the mixing adequate? ❑ 0 Is the site free of excessive foaming in the tank? # Is the odor acceptable? 0 ❑ ❑ ❑ Page # 7 Permit: NC0026689 Owner - Facility: Denton WWTP Inspection Date: 06/16/2013 Inspection Type: Compliance Evaluation Aerobic Digester Yes No NA NE # Is tankage available for properly waste sludge? ■ ❑ ❑ ❑ Comment: Still struggling to be able to land apply as often as necessary. Drying Beds Yes No NA NE Is there adequate drying bed space? ■ ❑ ❑ ❑ Is the sludge distribution on drying beds appropriate? ■ ❑ ❑ ❑ Are the drying beds free of vegetation? ■ ❑ ❑ ❑ # Is the site free of dry sludge remaining in beds? ■ ❑ ❑ ❑ Is the site free of stockpiled sludge? ■ ❑ ❑ ❑ Is the filtrate from sludge drying beds returned to the front of the plant? ❑ ❑ ■ ❑ # Is the sludge disposed of through county landfill? ■ ❑ ❑ ❑ # Is the sludge land applied? ■ ❑ ❑ ❑ (Vacuum filters) Is polymer mixing adequate? ❑ ❑ ■ ❑ Comment: Effluent Pipe Yes No NA NE Is right of way to the outfall properly maintained? ■ ❑ ❑ ❑ Are the receiving water free of foam other than trace amounts and other debris? ❑ ❑ ❑ ■ If effluent (diffuser pipes are required) are they operating properly? ❑ ❑ ■ ❑ Comment: Page # 8 WDEE R North Carolina Department of Environment and Natural Resources Pat McCrory Governor Mr. Victor Pizzurro, Town Manager Town of Denton P.O. Box 306 Denton, NC 27239-0306 Subject: NOTICE OF VIOLATION NOV-2013-LV-0199 Permit No. NCO026689 Denton WWTP Davidson County Dear Mr. Pizzurro: Division of Water Quality Charles Wakild, P.E, Director March 28, 2013 John E. Skvarla, III Secretary A review of Denton WWTP's monitoring report for December 2012 showed the following violations: Parameter Date Limit Value Reported Value Limit Type Mercury, Total (asHg) 12/10/12 0.012 ug/1 0.046 ug/l Daily Maximum Exceeded Remedial actions, if not already implemented, should be taken to correct the above noncompliance problem. Please be aware that violations of your NPDES permit could result in enforcement action for this by the Division of Water Quality for this and any additional violations of State law. If you should have any questions, please do not hesitate to contact Jenifer Carter at (336) 771-4957. cc: SWP — Central Files WSRO Files North Carolina Division of Water Quality, Winston-Salem Regional Office Location: 585 Waughtown St. Winston-Salem, North Carolina 27107 Phone: 336-771-50001 FAX: 336-771-46301 Customer Service: 1-877-623-6748 Internet: www.ncwaterquality.org Sincerely, W. Corey Basinger Surface Water Regional Supervisor Winston-Salem Regional Office Division of Water Quality Nne orthCarolina 11 ,.A ii fry lly An Equal Opportunity 1 Affirmative Action Employer Cover Sheet from fNl a0 6 - LV— OW Staff Member to Regional Supervisor ���� DNIR Review Record Facility:,_l/i L)1 kVT Permit/Pipe No.: Ao2LV MontWYear a� 1 Monthly Average Violations Parameter Permit Limit DMR Value % Over Limit Weekly �wliolations Date Parameter Permit Limitgvpe DMR Value 10 H e , v S Monitoring Frequency Violations % Over Limit --4a2 71 Date Parameter Permit Frequencv Values Reported # of Violations Other Violations ZasJ- /2 Mor7 k / IVO' �� via r9dD Vim) a AId> 5, - M 0 y� �2ne 2012 ('6eLaZ SPA n���P /A) Completed by: ,,J - rfe✓ Regional Water Quality Supervisor Signoff: nId" I" Date: / 3 Date: If •ktk —� Z9 c3 _AVVV 4'W NCDENR North Carolina Department of Environment and Natural Resources Beverly Caves Perdue Governor Mr. Victor Pizzurro, Town Manager Town of Denton P.O. Box 306 Denton, NC 27239-0306 Subject: NOTICE OF DEFICIENCY NOD-2012-LV-0090 Permit No. NCO026689 Denton WWTP Davidson County Dear Mr. Pizzurro: Division of Water Quality Charles Wakild, P.E. Director October 2, 2012 A review of Denton WWTP's monitoring report for June 2012 showed the following violations: Dee Freeman Secretary Parameter Date Limit Reported Value Limit Type Coliform, Fecal MF 06/23/12 400 #/100m1 408.96 #/100ml Weekly Geometric Mean Exceeded Remedial actions should be taken to correct the cause(s) of this deficiency. Unresolved deficiencies may lead to the issuance of a Notice of Violation and/or assessments of civil penalties by the Division of Water Quality of up to $25,000.00 per day for each violation. Any efforts undertaken to bring the facility back into compliance are not an admission of culpability. Your response, the degree and extent of harm to the environment, and the duration and gravity of the violation(s) will be considered in any future actions undertaken. If you should have any questions, please do not hesitate to contact Jenifer Carter at (336) 771-4957. cc: SAT - Central Files WSRO Files North Carolina Division of Water Quality, Winston-Salem Regional Office Location: 585 Waughtown St. Winston-Salem: North Carolina 27107 Phone: 336-771-50001 FAX: 336-771-46301 Customer Service: 1-877-623-6748 Internet: www.ncwaterquality.org Sincerely, W. Corey Basinger Surface Water Regional Supervisor Winston-Salem Regional Office Division of Water Quality NorthCarolina 11 An Equal Opportunity \ Affirmative action Employer Cover Sheet from Staff Member to Regional Supervisor DMR Review Record 71.�j����� Facility: Permit/Pipe No.: N Month/Year 02�)� Monthly Average Violations Parameter Permit Limit DMR Value % Over Limit Wee wily Violations Date Parameter Permit Lin-lit/Type DMR Value % Over Limit o()ML- 4a, 9(10 Monitoring Frequency Violations Date Parameter Permit Frequency Values Reported # of Violations Other Violations c yf a mat? is o `Mils ' Tuh 2011 deIQ a o 11 <rn VA, i+vri> A)oV a o o n -huff roc i T I f ) - 440c r,,2 ova (�eca - �Y, Mom) Completed by: Date: / Regional Water Quality I� Supervisor Signoff. Date: �� NCDENR North Carolina Department of Environment and Natural Resources Beverly Eaves Perdue Governor Honorable Scott Morris, Mayor Town of Denton P.O. Box 306 Denton, NC 272390306 Subject: NOTICE OF DEFICIENCY NOD-2012-LV-0075 Permit No. NCO026689 Denton WWTP Davidson County Dear Mr. Morris: Division of Water Quality Charles Wakild, P.E. Director August 22, 2012 A review of Denton WWTP's monitoring report for May 2012 showed the following violations: Dee Freeman Secretary Parameter Date Limit Value Reported Value Limit Type Coliform, Fecal MF 05/05/12 400 #/100ml 416.02 #/100ml Weekly Geometric Mean Exceeded Remedial actions should be taken to correct the cause(s) of this violation. Unresolved violations may lead to the issuance of a Notice of Violation and/or assessments of civil penalties by the Division of Water Quality of up to $25,000.00 per day for each violation. Any efforts undertaken to bring the facility back into compliance are not an admission of culpability. Your response, the degree and extent of harm to the environment, and the duration and gravity of the violation(s) will be considered in any future actions undertaken. If you should have any questions, please do not hesitate to contact Jenifer Carter at (336) 771-4957. cc: SWP — Central Files WSRO Files North Carolina Division of Water Quality, Winston-Salem Regional Office Location: 585 Waughtown St. Winston-Salem, North Carolina 27107 Phone: 336-771-5000 \ FAX: 336-771-4630 \ Customer Service: 1-877-623-6748 Internet: wvw.ncvvaterquality.org Sincerely, I—J W. Corey Basinger Surface Water Regional Supervisor Winston-Salem Regional Office Division of Water Quality ne NorthCarohna An Equal Opportunity Affirmative Action Employer Cover Sheet from j05D-9 L-U p Staff Member to Regional Supervisor DNIR Review Record Facility: D2nkn 14" Perniit/Pipe No.: 1W,61 a&4 Month/Year �1 02019 Parameter Monthly Average Violations Permit Limit DMR Value % Over Limit Wee /Daily Violations Date Parameter Permit Limitgv )e Date Parameter DMR Value % Over Limit °a Monitoring Frequency Violations Permit Frequency Values Reported # of Violations Other Violations LAS� /&y av/i �3 —No : Tun o?Dl1 (bop, Feca) o Afoy aoh rhvn1*+dr"M, ) C�01 L Dr rn �- J N Completed by: �,� o �� �ifX Date: b,911Z Regional Water Quality Supervisor Sianoff: —tyj� Date: �/ N.C. Dept,, of ENR AUG 2,9`2012 Winston-Salem TOWN OF DENTON August 27, 2012 North Carolina Division of Water Quality Winston-Salem Regional Office 585 Waughtown Street, North Carolina 27107 Subject: Request for leniency NOV-2012-LV-0433 NPDES Permit No. NCO026689 Dear Mr. Basinger: We respectfully request leniency in regards to NOV-2012-LV-0433 received in this office August 24, 2012. We report that the week that caused us to exceed our weekly and subsequently the monthly limit was an isolated instance. If you would review the previous month and the following weeks and month from the week in question, you will see that we have had no other issues with BOD. We have by all accounts rectified this issue (BOD and NH3(n)) by reducing our MLSS to approximately 3000 mg/L and we have since began nitrifying. We increased our land application events until we obtained the desired Sludge Age and MCRT. Historically, August has been the month that we struggled with compliance issues, but since these changes were made in April we have had no problems at all. Thank you for your attention in this matter. Sincerely, Troy B. Branch Town of Denton WWTP ORC 201 W. Salisbury Street P.O. Box 306 Phone: (336) 859-4231 Denton, NC 27239 Fax: (336) 859-3381 A& NCDENR North Carolina Department of Environment and Natural Resources Division of Water Quality Beverly Eaves Perdue Charles Wakild, P.E. Governor Director August 22, 2012 CERTIFIED MAIL #7010 2780 0001 4236 4021 RETURN RECEIPT REQUESTED Honorable Scott Morris, Mayor Town of Denton P.O. Box 306 Denton, NC 272390306 Subject: Notice of Violation and Recommendation for Enforcement NOV-2012-LV-0433 Permit No. NCO026689 Denton WWTP Davidson County Dear Mr. Morris: A review of Denton WWTP's monitoring report for April 2012 showed the following violations: Dee Freeman Secretary Parameter Date Limit Value Reported Value Limit Type BOD, 5-Day (20 Deg. Q 04/07/12 7.5 mg/l 13.17 mg/l Weekly Average Exceeded Nitrogen, Ammonia Total 04/07/12 6 mg/l 6.57 mg/l Weekly Average Exceeded BOD, 5-Day (20 Deg. C) 04/30/12 5 mg/l 6.03 mg/l Monthly Average Exceeded Nitrogen, Ammonia Total 04/30/12 2 mg/l 3.89 mg/1 Monthly Average Exceeded A Notice of Violation/Notice of Recommendation for Enforcement (NOV/NRE) is being issued for the noted violation of North Carolina General Statute (G.S.) 143-215.1 and NPDES Permit No. NC0026689. Pursuant to G.S. 143-215.6A, a civil penalty of not more than twenty-five thousand dollars ($25,000.00) may be assessed against any person who violates or fails to act in accordance with the terms, conditions, or requirements of any permit issued pursuant to G.S. 143-215.1. If you wish to provide additional information regarding the noted violation, request technical assistance, or discuss overall compliance please respond in writing within ten (10) business days after receipt of this Notice. A review of your response will be considered along with any information provided on the April 2012 Discharge Monitoring Report. You will then be notified of any civil penalties that may be assessed regarding the violations. If no response is received in this Office within the 10-day period, a civil penalty assessment may be prepared. Remedial actions, if not already implemented, should be taken to correct any problems. The Division of North Carolina Division of Water Quality, Winston-Salem Regional Office Location: 585 Waughtown St. Winston-Salem, North Carolina 27107 Phone: 336-771-50001 FAX: 336-771-46301 Customer Service: 1-877-623-6748 Internet: www,ncwaterquality.org NatuAdY NofthCarolina An Equal Opportunity'• Affirmative action Employer Water Quality may pursue enforcement actions for this and any additional violations. If the violations are of a continuing nature, not related to operation and/or maintenance problems, and you anticipate remedial construction activities, then you may wish to consider applying for a Special Order by Consent. If you have questions concerning this matter, please do not hesitate to contact Jenifer Carter or me at (336) 771-5000. Sincerely, W. Corey Basinger Surface Water Regional Supervisor Winston-Salem Regional Office Division of Water Quality cc: Point Source Branch SWP — Central Files WSRO Files Cover Sheet from Staff Member to Regional Supervisor DMR Review Record Facility: Permit/Pipe No.: [ aVM & Month/Year Monthly Average Violations Parameter Permit Limit DMR Value % Over Limit 0 17 5- ft U l to 1n y,h v eekly aily Violations Date Parameter 4T-q g m Permit LimiVTvpe DMR Value 13. j % Over Limit Monitoring Frequency Violations Date Parameter Permit Frequency Values Reported # of Violations w� Other Violations bsf =nf-: ftUdo►l /a mofiAS.' (00D) �3 JVOo?d I 600 f C� i ✓ d a l i �m Dili �r7r/�nv Completed by: -T— Date: 0217. Regional Water Quality Supervisor SiQnoff: Date: P-3 ��-, Za �,L. - f� NCDENR North Carolina Department of Environment and Natural Resources Beverly Eaves Perdue Governor Honorable Scott Morris, Mayor Town of Denton P.O. Box 306 Denton, NC 27239-0306 Subject: NOTICE OF VIOLATION NOV-2012-MV-0014 Permit No. NCO026689 Denton WWTP Davidson County Dear Mr. Morris: Division of Water Quality Charles Wakild, P.E. Director March 13, 2012 Dee Freeman Secretary A review of Denton WWTP's monitoring report for November 2011 showed the following violations: Parameter Week Ending: Frequency Required Violation Conductivity 11/19/11 3 X week 2 of 3 required values reported pH 11/19/11 3 X week 2 of 3 required values reported Remedial actions, if not already implemented, should be taken to correct the above noncompliance problem. Submit amended DMR if necessary to both Central Files and this office. Please be aware that these violations of your NPDES permit, and any additional violation of State law, could result in enforcement action by the Division of Water Quality. If you should have any questions, please do not hesitate to contact Jenifer Carter at (336) 771-4957. cc: SWP — Central Files WSRO Files North Carolina Division of Water Quality, Winston-Salem Regional Office Location: 585 Waughtown St, Winston-Salem, North Carolina 27107 Phone: 336-771-50001 FAX: 336-771-46301 Customer Service: 1-877-623-6748 Internet: www,ncwaterquality.org Sincerely, W. Corey Basinger Surface Water Regional Supervisor Winston-Salem Regional Office Division of Water Quality Nne orthCarolina Aaturalltl An Eoual 0000rtunity 1 Affirmative Action Emolover l vov aD - IV V 0014 Cover Sheet from Staff Member to Regional Supervisor DNIR Review Record Facility: ww l e Permit/Pipe No.: hLaJ,2fkff Month/Year �Jcv g4 t Monthly Average Violations Parameter Permit Limit DMR Value % Over Limit Weekly/Daily Violations Date Parameter Permit Limitll'vpe DMR Value % Over Limit Monitoring Frequency Violations Date Parameter Permit Frequency Values Reported # of Violations —Pg a Other Violations �-evicus iT m6'AtS ' Completed by: '� Date: q Z Regional Water Quality Supervisor Signoff: Date: 1-1,/AA4tkAi 46J OF \N A 7-F� State of North Carolina p Department of Environment and Natural Resources y Division of Water Quality r p Flow Tracking/Acceptance for Sewer Extension Permit Applications (FTSE—10/07) Project Applicant Name: Town of Denton Project Name for which flow is being requested: More than one FTSE-10/07 may be required for a single project if the owner of the WWTP is not responsible for all pump stations along the route of the proposed wastewater flow. I. Complete this section only if you are the owner of the wastewater treatment plant. a. WWTP Facility Name: Denton WWTP b. WWTP Facility Permit #: NC0026689 All flows are in MGD c. WWTP facility's permitted flow 0.800 d. Estimated obligated flow not yet tributary to the WWTP 0.0299(Exhibit A) e. WWTP facility's actual avg. flow 0.406 f. Total flow for this specific request g. Total actual and obligated flows to the facility 0.436 h. Percent of permitted flow used 54.5% II. Complete this section for each pump station you are responsible for along the route of this proposed wastewater flow. List pump stations located between the project connection point and the WWTP Pump Station Name Approx. Capacity, MGD Approx. Current Avg. (Firm/Design) Daily Flow, MGD Nicoma (P S 1) 0.403 0.046 III. Certification Statement: I, Troy B. Branch ,certify that, to the best of my knowledge, the addition of the volume of wastewater to be permitted in this project has been evaluated along the route to the receiving wastewater treatment facility and that the flow from this project is not anticipated to cause any capacity related sanitary sewer overflows or overburden any downstream pump station en route to the receiving treatment plant under normal circumstances. This analysis has been performed in accordance with local established policies and procedures using the best available data. This certification applies to those items listed above in Sections I and II for which I am the responsible party. Signature of this form indicates acceptance of this wastewater flow. Signing Official Signature Date • Exhibit A SLunmary of Obligated Wastewater Flows 2005 - Present Town of Denton Flow Total Current Currently Not Yet Project Permit Permitted Number Active Flow Tributary Permit No. Name Date Flow (GPD) Of Units Flow (GPD) (GPD) 1.WQ0028616 Tower 3/28/05 3,600 0 0 3,600 Mountain 2.WQ0030855 Flat 10/5/06 7,920 0 0 7,920 Swamp Road 3.WQ0032993 Old Camp 5/6/08 4,320 5 1800 2,520 & Floyd Street 4.WQ0033520 Nicoma 10/17/08 6,120 8 2880 3,240 Park Ph I 5.WQ0033664 Greenbrier 12/10/08 17,640 14 5040 12,600 & Nicoma Park Ph II Totals 39,600 27 9720 29,880 Exhibit B Total Wastewater Flow Summary January 1, 2011 — December 31, 2011 Town of Denton Facility No. NC 0026689 Total Flow Average Daily Month (Gallons) Flow (GPD) January 2011 12,369,000 399,000 February 2011 12,432,000 444,000 March 2011 15,717,000 507,000 April 2011 11,310,000 377,000 May2011 9,517,000 370,000 June 2011 10,110,000 337,000 July 2011 9,672,000 312,000 August 2011 9,827,000 317,000 September 2011 11,940,000 342,000 October 2011 13,082,000 422,000 November 2011 13,950,000 465,000 December 2011 16,048,000 518,000 Daily Average = 405,500 Gallons for 2011 Calendar Year 7N.C. ECEIVED I Dept. of ENR OF W ATFR 2 6 State of North Carolina P Winston-Salem Department of Environment and Natural Resources 0� CO Regional office v Division of Water Quality 0 Flow Tracking/Acceptance for Sewer Extension Permit Applications (FTSE—10/07) Project Applicant Name: TOWN OF DENTON Project Name for which flow is being requested: More than one ME-10/07 may be required for a single project if the owner of the WWTP is not responsible for all pump stations along the route of the proposed wastewater flow. I. Complete this section only if you are the owner of the wastewater treatment plant. a. WWTP Facility Name: Town of Denton WWTP b. WWTP Facility Permit #: NCO026689 All flows are in MGD c. WWTP facility's permitted flow 0.800 d. Estimated obligated flow not yet tributary to the WWTP 0.0385 (EXHIBIT A) e. WWTP facility's actual avg. flow 0.387 f. Total flow for this specific request g. Total actual and obligated flows to the facility 0.4255 h. Percent of permitted flow used 53.2% II. Complete this section for each pump station you are responsible for along the route of this proposed wastewater flow. List pump stations located between the project connection point and the WWTP Pump Station Name Approx. Capacity, MGD Approx. Current Avg. (Finn/Design) Daily Flow, MGD NICOMA (PSI) 0.403 0.041 III. Certification Statement: I, Troy B Branch , certify that, to the best of my knowledge, the addition of the volume of wastewater to be permitted in this project has been evaluated along the route to the receiving wastewater treatment facility and that the flow from this project is not anticipated to cause any capacity related sanitary sewer overflows or overburden any downstream pump station en route to the receiving treatment plant under normal circumstances. This analysis has been performed in accordance with local established policies and procedures using the best available data. This certification applies to those items listed above in Sections I and H for which I am the responsible p -Signature of this form indicates acceptance of this wastewater flow.A,,a, s aez o C'irrv�iv�� nfii�inl .Cirrwnt�iro ��� )lntn ro� FJ • ��(`C�1nC Exhibit A Summary of Obligated Wastewater Flows 2005 - Present Town of Denton Flow Total Current Currently Not Yet Project Permit Permitted Number Active Flow Tributary Permit No. Name Date Flow (GPD) Of Units Flow (GPD) (GPD) l.WQ0028616 Tower 3/28/05 3,600 0 0 3,600 Mountain 2.WQ0030855 Flat 10/5/06 7,920 0 0 7,920 Swamp Road 3.WQ0032993 Old Camp 5/6/08 4,320 3 1080 3,240 & Floyd Street 4.WQ0033520 Nicoma 10/17/08 6,120 0 0 6,120 Park Ph I 5.WQ0033664 Greenbrier 12/10/08 17,640 0 0 17,640 & Nicoma Park Ph II Totals 39,600 0 0 38,520 May 27, 2009 Mr. F. E. Isenhour, Town Manager Town of Denton P O Box 306 Denton, North Carolina 27239 SUBJECT: Removal of General Moratorium FTSE 10/07 Submittal Denton Davidson County Dear Mr. Isenhour: The Division of Water Quality's Winston-Salem Regional Office has received your submittal of the Flow Tracking/Acceptance for Sewer Extension Permit Applications (FTSE 10/07) for 2009. This report was found to be complete and it indicated your total actual plus obligated flows to be 53.2% of the permitted flow for your WWTP. Since your facility has less that 60% of its permitted flow committed, you will only need to submit the annual update to this office by January 15, 2010. When the total reaches 60% you will need to submit semi-annual updates. This correspondence removes the General Moratorium as noted in our letter of May 12, 2009. Should you have any additional questions, please contact Steve Mauney at (336) 771-4969 or another member of my staff at (336) 771-5000. Sincerely, Steve W. Tedder Water Quality Supervisor Cc: Troy Branch, ORC SWP-Central Files & WSRO PERCS Unit cc: Petmits and Engineering Technical Support Branch County Health Dept. Central Files WSRO Dane October 16, 1991 NPDES STAFF REPORT AND COMMENDATIONS County Dav'dson NPDES Permit No NC0046094 PART I - GENERAL INFORMATION / 1. Facility and Address: Mr. Dennis Vaughn, SFR (Thomasville Twsp, Route 8, Box 1373 Map 340F, Lot #15) Thomasville, N.C. 273,60 2. Date of Investigation': September 17, 1991 3. Report Prepared by:` Mike Mickey, Environmental Technician V 4. Persons Contacted `and Telephone Number: Mr. Dennis Vaughn, ph (919) 476-6064(H); 861-2009(W) 5. Directions to Site: Take Hwy 29 & 70 south out of Thomasville. Turn left onto SR 1022 and travel east approximately 1.4 miles to Upper Lake Rd (SR 2024). Turn right and travel east 1.5 mile to Greentree Rd '(SR 2751). The Vaughn SFR is the third house on the right past SR 2751. 6. Discharge Point(s) - List for all discharge points Latitude: 350 51' 26" Longitude: 800 08' 42" Attach a USGS Map Extract and indicated treatment plant site and discharge point on map. USGS Quad No. D18SW or USGS Quad Name Lexington East 7. Size, (land available for expansion and upgrading): Lan /is available for repair of the system. 8. T ppgraphy (relationship to flood plain included): he sandfilter is located behind the residence in a low area near the U.T. 9. 1 Location of nearest dwelling: The Vaug" residence is surrounded by other dwellings. _D UR .''L,82013 L --- - . ''! Office Town of ID�znton 2012'Onnual Rport for Wazt¢watu TreatmQnt and GollQetion §g6tv_m House Bill 1160, the Clean Water Act of 1999, was ratified by the North Carolina General Assembly on July 20th, 1999 and signed into law by the Governor on July 21, 1999. This legislation requires that the owner or operator of any wastewater treatment works or wastewater collection system that treats or collects primarily domestic or municipal wastes provide an annual report to its users or customers and to the Department of Environment and Natural Resources (NCDENR) that summarizes the treatment works' or collection system's performance over a 12 month period. The law states the report shall summarize the performance of the treatment works or collection system and state the extent to which any terms of its permit, federal laws, or any State laws, regulations or rules related to the protection of water quality have been violated. The following personnel are recognized by the State of North Carolina as The Town of Denton Operators in Responsible Charge (ORC) and Back-up'Operators in Responsible Charge (Back- up ORC) of their Publicly Owned Treatment Works (POTW). Wastewater Treatment Plant, NPDES #0026689, ORC Troy B. Branch, Back-up ORC Michael Parrish/ Office 336-859-4460 Wastewater Collection System, Water Quality Permit # WQCS00223, ORC Troy B. Branch, Back-up ORC Michael S. High/Office 336-859-5580 Land Application Program, Permit # WQ0016966, ORC Troy B. Branch Collection System The sewage collection system of the Town of Denton has approximately 20 miles of pipe with lines sized from 6 inch to 10 inch in diameter. There are 6 sewer lift stations located in and around town to convey the wastewater from our customers to the Wastewater Treatment Plant. The sewer collection system is subject to regular inspection by the Division of Water Quality a branch of the North Carolina Department of Environment and Natural Resources. The collection system was last inspected in October 2011. The collection system received a Notice of Violation for inadequate line cleaning. The law requires 10% of all sewer lines, older than 5 years old, be cleaned annually. This equates to 1.13 miles of sewer line. 0.86 miles of line were documented as being cleaned for 2010. Upon receiving the Notice of Violation, we have been more vigilant in documenting our preventative cleaning operations. Sanitary Sewer Overflows (SSO's) Date and Location Number of Gallons Cause Environmental Impact June 6, 2012 27,000 Inflow and None Councill Access Infiltration Road Wastewater Treatment Plant (WWTP) The wastewater treatment facility operates under the National Pollutant Discharge Elimination System (NPDES), an EPA mandated requirement for all wastewater treatment facilities nation- wide. This permit includes monitoring requirements and discharge limits, some of which vary with seasons and have different maximums for daily, weekly and monthly averages. All limits are prescribed to protect the stream and down -stream users of the water. During the reporting year, January 1, 2012 - December 31, 2012, the Town of Denton treated 147 million gallons of wastewater. The previous year, we treated 146 million gallons. The WWTP is inspected regularly by the Winston-Salem Regional Office of the Division of Water Quality to ensure compliance with Federal and State regulations. The WWTP was last inspected in April 2011. The inspection showed no violations. The following is a table showing and explaining the Notice of Violation's (NOV's) received in 2012. Parameter Date Infraction Disciplinary Action Environmental Impact Chronic February Failed to exceed Notice of Violation. Toxicity control organism Additional testing for None young produced March and April BOD April 2-- 4-, Exceeded Weekly Notice of Violation/No None 1 )b and Monthly limit civil penalty assessed Ammonia as April Exceeded Weekly Notice of Violation/No None Nitrogen r 31 and Monthly limit civil penalty assessed Fecal Coliform June 2012 Exceeded Weekly Notice of Deficiency None Geometric Mean limit of 400# 100m1? Mercury December Exceeded Monthly As of the date of this None average limit report, no actin �a taken 0` k^ I' The Town of Denton WWTP is located on Councill Access Road. It is an extended aeration biological process treatment plant with a permitted flow of 800,000 gallons per day. The treatment plant, at its current location was completed in 1984 with an expansion in 2000. In 2012, the WWTP averaged 402,000 gallons per day. After solids removal and the biological treatment has occurred the water is disinfected with chlorine gas and subsequently de - chlorinated with Sulfur Dioxide. The outgoing water (effluent) is monitored and analyzed for some 17 permitted characteristics weekly and monthly. Annually, the wastewater is tested for an additional - 100 parameters. 6 of these analytes are tested in-house at the WWTP field parameter laboratory. The parameters include; Flow, Dissolved Oxygen, Temperature, pH, Conductivity and Ultra Low Range Chlorine Residual. Because aquatic life is more sensitive than humans to these materials, some of these parameter limits are lower than drinking water standards. The permits are complex and can be viewed upon request. Environmental Programs and Services As part of our commitment to support environmental awareness and promote a better understanding of our community's environmental role, Denton has offered tours of the WWTP and annually visits the local elementary school to discuss waste treatment, water conservation and residential grease management with their 5th Grade classes. This is when the topics of water reclamation and water conservation enter their curriculum. We have also utilized the Town's annual street festival by setting up a booth to spread the word about Fat's Oil and Grease management. Prohibited pollutants or liquids include: • Pollutants which create a fire or explosive hazard q� • Petroleum based products • Any wastewater having a pH of less than 5.0 or greater than 9.5. . • Storm water, surface water, ground water, roof run-off, or swimming pool drainage. u. • Fats, Oils and Greases (FOG) • Medical wastes (i.e. needles, glass fragments, razors and expired and/or unused prescriptions/medications)` • Any wastes containing detergents or other substances which may cause excessive foaming in the POTW. • Solid or viscous substances in amounts which will cause obstruction in the flow in the POTW resulting in the sewer line inundated with grease interference but in no case solids larger than one half inch(1/2") in any dimension. • Any wastewater containing pollutants, including oxygen -demanding pollutants, (BOD etc.) in sufficient quantity, either singly or by interaction with other pollutants, to cause interference with the POTW. • Any wastewater having a temperature greater than 150' F (66°C) or which will inhibit biological activity in the POTW, but in no case wastewater which causes the temperature at the introduction into the WWTP to exceed 104' F (40°C) Fats, Oils, and Grease (FOG Grease is a real "pain in the drain" because it's a major cause of problems we find in sewer lines. Blockages occur when grease (things like oil, butter, margarine, shortening, pan drippings, and sauces) is poured down the drain. Grease can clog sewer lines. Clogged sewer lines lead to sewer spills, which are messy, bad for the environment, and can be , expensive. Town of Denton does everything it can to prevent sewer _ spills, but we can't do it alone. We need your help!" The best way you can prevent sewer spills is to never pour grease down the drain. Instead, pour it into a used soup can, place in freezer to harden, and throw it away in the trash. Don't believe the old saying (1) its okay to pour grease down the drain as long as you run water at the same time, or (2) its perfectly fine to dump grease if you use your garbage disposal to break it up. These are myths! It's never okay to pour any type of grease down the drain. Here are some more ways to "Cease the Grease"- • Wipe or scrape your dishes before washing them • Remove excess oil from pots and pans with a paper towel and throw it the trash can. • Use strainers in sink drains to collect food scraps and throw away the scraps in the trash. Thank you for your help, and please spread the word about how important it is to "cease the grease". Together, we can protect our sewer system and the environment. For more information, please visit our web site www.TownOfDenton.com or call 859-4460. If you have questions or comments about this report you may direct them to Mr. Troy Branch, POTW ORC at 859-4460 or you are invited to attend the Board of Commissioners meeting held the first and third Mondays monthly at Town Hall at 201 West Salisbury Street. ALTIPIPTA ;A NCDENR North Carolina Department of Envir onme it and Beverly Eaves Perdue Governor Honorable Scott Morris Town of Denton P.O. Box 306 Denton, NC 27239-0306 Subject: NOTICE OF VIOLATION NOV-2011-LM-0071 Permit No. NCO026689 Denton WWTP Davidson County Dear Mr. Morris: Division of Water Quality Coieen H. St.tllins Director December 21, 2011 Natural resources Dee Freeman Secretary A review of Denton WWTP's monitoring report for September 2011 showed the following violations: Parameter Date Limit Value Reported Value Limit Type BOD, 5-Day (20 Deg. C) 09/17/11 7.5 mg/1 10.2 mg/l Weekly Average Exceeded BOD, 5-Day (20 Deg. C) 09/30/11 5 mg/1 5.27 mg/l Monthly Average Exceeded Parameter Week ending Measuring Frequency Violation pH 09/03/11 3 X week Monitored only 2X Conductivity 09/03/11 3 X week Monitored only 2X Remedial actions, if not already implemented, should be taken to correct the above noncompliance problem. Please be aware that these violations of your NPDES permit, and any additional violation of State law, could result in enforcement action by the Division of Water Quality. If you should have any questions, please do not hesitate to contact Jenifer Carter at (336) 771-4957. Sincerely, cc: SWP — Central Files WSRO Files North Carolina Division of Water Quality, Winston-Salem Regional Office Location: 585 Waughtown St, Winston-Salem, North Carolina 27107 Phone: 336-771-50001 FAX: 336-771-46301 Customer Service: 1-877-623-6748 Internet: vvww.ncwaterquality.org W. Corey Basinger Surface Water Regional Supervisor Winston-Salem Regional Office Division of Water Quality Nne orthCarolina Naturally An 'r_quai Opportunity � Affirmative Action Employer LA— oo Cover Sheet from Nw'doll—Staff Member to Regional Supervisor DMR Review Record Facility:�L�Wwi► Permit[Pipe No.: Month/Year .�* c2C1 1( Monthly Average Violations Parameter Permit Limit DMR Value % Over Limit "ee/Daily Violations Date Parameter Permit L-b tl -V-4 e 60V — DMR Value %Over Limit A).-�?-- _ o Monitorincy Frequency Violations Date Parameter Permit Frequency Values Reported # of Violations AZ / Other Violations � r�Ul 1Lk3 (Z il'1�,71 �(/ ad 1 I ({M ✓l� Gl I� - 1 Gt l�% V Q �L44 r0o Mor o l 60'kl recQf a r,, %?-o✓,N� bj en) �4 �)w, ero __l 6oLeh �e4cno�-- Completed by: _v (G� i' �2y Date: J '� Regional Water Quality � 2-0LI( Supervisor Signoff: Date: eOD) Beverly Eaves Perdue Governor NCDENR North Carolina Department of Environment and Natural Resources Division of Water Quality Coleen H. Sullins Director October 3, 2011 CERTIFIED MAIL #7009 2250 0004 1083 6012 RETURN RECEIPT REQUESTED Honorable Scott Morris, Mayor Town of Denton P.O. Box 306 Denton NC 27239-0306 Subject: Notice of Violation and Recommendation for Enforcement NOV-2011-LV-0469 Permit No. NCO026689 Denton WWTP Davidson County Dear Mr. Morris: A review of Denton WWTP's monitoring report for June 2011 showed the following violations: Dee Freeman Secretary Parameter Date Limit Reported Limit Type BOD, 5-Day (20 Deg. C) - Concentration 06/11/11 7.5 mg/l 8.97 mg/l Weekly Average Exceeded BOD, 5-Day (20 Deg. C) - Concentration 06/04/11 7.5 mg/l 11.75 mg/l Weekly Average Exceeded BOD, 5-Day (20 Deg. C) - Concentration 06/25/11 7.5 mg/l 7.77 mg/1 Weekly Average Exceeded BOD, 5-Day (20 Deg. C) - Concentration 06/18/11 7.5 mg/1 8.1 mg/1 Weekly Average Exceeded Coliform, Fecal MF, M-FC Broth,44.5C 06/25/11 400 #/100ml 600 #/100ml Weekly Geometric Mean Exceeded BOD, 5-Day (20 Deg. C) - Concentration 06/30/11 5 mg/l 7.97 mg/l Monthly Average Exceeded A Notice of Violation/Notice of Recommendation for Enforcement (NOV/NRE) is being issued for the noted violation of North Carolina General Statute (G.S.) 143-215.1 and NPDES Permit No. NC0026689. Pursuant to G.S. 143-215.6A, a civil penalty of not more than twenty-five thousand dollars ($25,000.00) may be assessed against any person who violates or fails to act in accordance with the terms, conditions, or requirements of any permit issued pursuant to G.S. 143-215.1. If you wish to provide additional information regarding the noted violation, request technical assistance, or discuss overall compliance please respond in writing within ten (10) days after receipt of this Notice. A review of your response will be considered along North Carolina Division of Water Quality, Winston-Salem Regional Office Location: 585 Waughtown St. Winston-Salem, North Carolina 27107 Phone: 336-771-50001 FAX: 336-77146301 Customer Service: 1-877-623-6748 Internet: www,nowaterquality.org NorthCarolina naturally An Equal Opportunity 1 Affirmative Action Employer with any information provided on the June 2011 Discharge Monitoring Report. You will then be notified of any civil penalties that may be assessed regarding the violations. If no response is received in this Office within the 10-day period, a civil penalty assessment may be prepared. Remedial actions, if not already implemented, should be taken to correct any problems. The Division of Water Quality may pursue enforcement actions for this and any additional violations. If the violations are of a continuing nature, not related to operation and/or maintenance problems, and you anticipate remedial construction activities, then you may wish to consider applying for a Special Order by Consent. If you have questions concerning this matter, please do not hesitate to contact Jenifer Carter or me at (336) 771-5000. Sincerely, W. Corey Basinger Surface Water Regional Supervisor Winston-Salem Regional Office Division of Water Quality cc: Point Source Branch SWP — Central Files WSRO Files NoV")O `� ,�y � / Cover Sheet from Staff Member to Regional Supervisor M'IR Review Record Facility: w Permit/Pipe No.: AYCU�&&11 MontIVYear Parameter Date � ZS Date 4�— Monthly Average Violations Permit Limit DMR Value _ALL .q7 LWee�,aily Violations Parameter Permit LimitlI'vDe DMR Value Cc Monitoring Parameter 2L P Violations zquency Violations Permit Frequencv Values Reported Over Limit Over Limit 5771, /' � Z 02 , � o 0 b A Tv r # of Violations L572� - Completed by: C« — Date: ��z% Regional Water Quality ` Date: Supervisor Sianoff: �� NCDENR North Carolina Department of Environment and Natural Resources Beverly Eaves Perdue Governor Honorable Scott Morris Town of Denton P.O. Box 306 Denton, NC 27239-0306 Subject: NOTICE OF VIOLATION NOV-2011-LV-0219 Permit No. NCO026689 Denton WWTP Davidson County Dear Mr. Morris: Division of Water Quality Coleen H. St.illins Director June 13, 2011 A review of Denton WWTP's monitoring report for March 2011 showed the following violations: Dee Freeman Secretary Parameter Date Limit Reported Limit Type Coliform, Fecal MF, M-FC Broth,44.5C 03/05/11 400 /100m1 512.99 #/100ml Wkly Geometric Mean Exceeded Remedial actions, if not already implemented, should be taken to correct the above noncompliance problem. Please be aware that these violations of your NPDES permit, and any additional violation of State law, could result in enforcement action by the Division of Water Quality. If you should have any questions, please do not hesitate to contact Jenifer Carter at (336) 771-4957. cc: SWP — Central Files WSRO Files North Carolina Division of Water Quality, Winston-Salem Regional Office Location: 585 Waughtown St. Winston-Salem, North Carolina 27107 Phone: 336-771-50001 FAX: 336-771-46301 Customer Service: 1-877-623-6748 Internet: www.nmaterquality.org Sincerely, W. Corey Basinger Surface Water Regional Supervisor Winston-Salem Regional Office Division of Water Quality NorthCarolina Naturally An Equal Opportunity 1 Affirmative Action Employer Cover Sheet from Staff Member to Regional Supervisor DNIR Review Record Facility:Permit/Pipe No.: ALO&OMW Month/Year �wc t�( o2Ql Monthly Average Violations Parameter Permit Limit DMR Value (Wee-k)-1/Daily Violations % Over Limit Date Parameter Permit LimitfTvpe DMR Value % Over Limit Monitoring Frequency Violations Date Parameter Permit Frequency Values Reported # of Violations Pther Violations /`--� Completed by: _ _ 1 Gt r%Y Date: Regional Water Quality4* Supervisor Signoff: Date: North Carolina Beverly Eaves Perdue Governor ��A ���� NCDENR Department of Environment and Natura Division of Water Quality Coleen H. Sullins Director May 2, 2011 Honorable Scott Morris Town of Denton P.O. Box 306 Denton, NC 27239-0306 SUBJECT: Compliance Evaluation Inspection Town of Denton WWTP NPDES Permit #NC0026689 Davidson County Dear Mr. Morris: Resources Dee Freeman Secretary A compliance Evaluation Inspection was performed at the Town of Denton's WWTP on April 7, 2011 by Jenifer Carter of the Winston-Salem Regional Office. Mr. Troy Branch, Operator in Responsible Charge (ORC), was present for the inspection. This type of inspection consists of two basic parts: an in office review of facility files and self -monitoring data, and an on -site inspection of the facility. A review of self -monitoring data for the period of January through December 2010 revealed several Biochemical Oxygen Demand Limits violations. All have been addressed through the Division's regular monthly enforcement program. Problems noted during the last inspection have been addressed as follows: • The generator was fixed by replacing the automatic transfer switch • The helisieve was repaired • A finer bar screen was installed to protect equipment when the helisieve is under repair or maintenance. • The leaking weir in clarifier #3 was repaired • Sludge was contained to the sludge drying beds and the Stormwater Pollution Prevention Plan updated accordingly. • Sludge storage capacity may continue to be a problem, though violations seem to have lessened for the time being. That being said, related violations do seem to occur most often during the heat of the summer. It was noted by Mr. Branch that ideas for increasing sludge storage capacity are currently being discussed, including modifying existing unused portions of the plant. North Carolina Division of Water Quality, Winston-Salem Regional Office Location: 585 Waughtown St. Winston-Salem, North Carolina 27107 Phone: 336-771-50001 FAX: 336-771-4630 ,. Customer Service: 1-877-623-6748 Internet: mm,nmaterquality.org An Equal Opportunity \ A�irmauve Action Eiroloyer ...continued on reverse NorthCarolina Naturally Mr. Branch continues to maintain all records in excellent order and operates the plant to its maximum capability. Should you have any questions please contact Ms. Jenifer Carter in our Winston-Salem Regional Office at (336) 771-4957. Sincerely, W. Corey Basinger Surface Water Regional Supervisor Winston-Salem Regional Office Division of Water Quality cc: Troy Branch (same address) SWP-Central Files WSRO Files United States Environmental Protection Agency Form Approved. EPA Washington, D.C. 20460 OMB No. 2040-0057 Water Compliance Inspection Report Approval expires 8-31-98 Section A: National Data System Coding (i.e., PCS) Transaction Code NPDES yr/mo/day Inspection Type Inspector Fac Type 1 U 2 U 31 NCO026689 I11 121 11/04/07 117 181C1 19u 201 I U IJ 1'-�—l+ I„� t„� Remarks 211 1 1 1 1 1 1 1 Jill 1 1 1 1 I I I I Jill 1 1 1 1 Jill I I I I I I I I I I I I I IJ6 Inspection Work Days Facility Self -Monitoring Evaluation Rating B 1 CIA ----- — - -- --Reserved— -- - — -- 67I 169 70U 3 ( 71(N( 72I NI I 73I 174 751 I I I I I I 180 +--' W Section B: Facility Data Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include Entry Time/Date Permit Effective Date POTW name and NPDES permit Number) 10:00 AM 11/04/07 09/11/01 Denton WWTP Exit Time/Date Permit Expiration Date NCSR 2569 Denton NC 27239 01:00 PM 11/04/07 14/01/31 Name(s) of Onsite Representative(s)mtles(s)/Phone and Fax Number(s) Other Facility Data Troy B Branch//336-859-4460 /3368593381 Name, Address of Responsible Official/title/Phone and Fax Number Scott morriB,PO Box 306 Denton NC 272390306//336-859-5885/3368593387NCted 0 Section C: Areas Evaluated During Inspection (Check only those areas evaluated) Permit E Flow Measurement Operations & Maintenance Records/Reports Self -Monitoring Program N Sludge Handling Disposal Facility Site Review Effluent/Receiving Waters Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) (See attachment summary) Name(s) and Signature(s) of Inspector(s) Agency/Office/Phone and Fax Numbers Date Jenifer Cart r WSRO WQ//336-771-5000/ �A/� SigMrfge nt Q A Reviewer and Fax Numbers Date ,Agency/Office/Phone ?tea EPA Form 3560-3 (Rev 9-94) Previou editions are obsolete. Page # 1 NPDES yr/mo/day Inspection Type 1 3I NCO026689 1 11 121 11/04/07 1 17 18U Section D: Summary of Finding/Comments (Attach additionalsheetsof narrative and checklists as necessary) Page # 2 Permit: NCO026689 Owner - Facility: Denton WWTP Inspection Date: 04/07/2011 Inspection Type: Compliance Evaluation Permit Yes No NA NE (If the present permit expires in 6 months or less). Has the permittee submitted a new application? 00011 Is the facility as described in the permit? ■ ❑ ❑ ❑ # Are there any special conditions for the permit? ❑ ■ ❑ ❑ Is access to the plant site restricted to the general public? ■ ❑ ❑ ❑ Is the inspector granted access to all areas for inspection? ■ ❑ ❑ ❑ Comment: Record Keeping Yes No NA NE Are records kept and maintained as required by the permit? ■ ❑ ❑ ❑ Is all required information readily available, complete and current? ■ ❑ ❑ ❑ Are all records maintained for 3 years (lab. reg. required 5 years)? ■ ❑ ❑ ❑ Are analytical results consistent with data reported on DMRs? ■ ❑ ❑ ❑ Is the chain -of -custody complete? ■ ❑ ❑ ❑ Dates, times and location of sampling ■ Name of individual performing the sampling ■ Results of analysis and calibration ■ Dates of analysis ■ Name of person performing analyses ■ Transported COCs ■ Are DMRs complete: do they include all permit parameters? ■ ❑ ❑ ❑ Has the facility submitted its annual compliance report to users and DWQ? ■ ❑ ❑ ❑ (If the facility is = or > 5 MGD permitted flow) Do they operate 24/7 with a certified operator on each shift? ❑ ❑ ■ ❑ Is the ORC visitation log available and current? ■ ❑ ❑ ❑ Is the ORC certified at grade equal to or higher than the facility classification? ■ ❑ ❑ ❑ Is the backup operator certified at one grade less or greater than the facility classification? ■ ❑ ❑ ❑ Is a copy of the current NPDES permit available on site? ■ ❑ ❑ ❑ Facility has copy of previous year's Annual Report on file for review? ❑ ❑ ❑ ■ Comment: Influent Sampling Yes No NA NE # Is composite sampling flow proportional? ❑ ❑ ■ ❑ Page # 3 Permit: NCO026689 Owner - Facility: Denton WIMP Inspection Date: 04/07/2011 Inspection Type: Compliance Evaluation Influent Sampling Yes No NA NE Is sample collected above side streams? ■ ❑ ❑ ❑ Is proper volume collected? ■ ❑ ❑ ❑ Is the tubing clean? ■ ❑ ❑ ❑ # Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees Celsius)? ❑ ❑ ■ ❑ Is sampling performed according to the permit? ■ ❑ ❑ ❑ Comment: sampler is iced. A refrigerated sampling device is recommended. Effluent Sampling Yes No NA NE Is composite sampling flow proportional? ■ ❑ ❑ ❑ Is sample collected below all treatment units? ■ ❑ ❑ ❑ Is proper volume collected? ■ ❑ ❑ ❑ Is the tubing clean? ■ ❑ ❑ ❑ # Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees Celsius)? ■ ❑ ❑ ❑ Is the facility sampling performed as required by the permit (frequency, sampling type representative)? ■ ❑ ❑ ❑ Comment: Flow Measurement - Effluent Yes No NA NE # Is flow meter used for reporting? ■ ❑ ❑ ❑ Is flow meter calibrated annually? ■ ❑ ❑ ❑ Is the flow meter operational? ■ ❑ ❑ ❑ (If units are separated) Does the chart recorder match the flow meter? ❑ ❑ ❑ ■ Comment: Operations & Maintenance Yes No NA NE Is the plant generally clean with acceptable housekeeping? ■ ❑ ❑ ❑ Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable Solids, pH, DO, Sludge ■ ❑ ❑ ❑ Judge, and other that are applicable? Comment: Standby Power Is automatically activated standby power available? Is the generator tested by interrupting primary power source? Is the generator tested under load? Was generator tested & operational during the inspection? Yes No NA NE Page # 4 Permit: NCO026689 Owner - Facility: Denton WwrP Inspection Date: 04/07/2011 Inspection Type: Compliance Evaluation Standby Power Yes No NA NE Do the generator(s) have adequate capacity to operate the entire wastewater site? 00110 Is there an emergency agreement with a fuel vendor for extended run on back-up power? ■ ❑ ❑ ❑ Is the generator fuel level monitored? ■ ❑ ❑ ❑ Comment: The generator is automatically run every month and can power the entire plant if the suldge tanks are not aerated. A new automatic transfer switch was installed since the last inspection. It did start during this inspection. Pump Station - Influent Yes No NA NE Is the pump wet well free of bypass lines or structures? ■ ❑ ❑ ❑ Is the wet well free of excessive grease? ■ ❑ ❑ ❑ Are all pumps present? ■ ❑ ❑ ❑ Are all pumps operable? ■ ❑ ❑ ❑ Are float controls operable? ❑ ❑ ■ ❑ . Is SCADA telemetry available and operational? ❑ ■ ❑ ❑ Is audible and visual alarm available and operational? ■ ❑ ❑ ❑ Comment: Rnr Ctrraonc Yes No NA NE Type of bar screen a.Manual ■ b.Mechanical ■ Are the bars adequately screening debris? ■ ❑ ❑ ❑ Is the screen free of excessive debris? MOOO Is disposal of screening in compliance? ■ ❑ ❑ ❑ Is the unit in good condition? ■ ❑ ❑ ❑ Comment: The heliesieve had been repaired since the last inspection and a finer bar screen installed to protect equipment during times it is used for back-up screening. Oxidation Ditches Yes No NA NE Are the aerators operational? ■ ❑ ❑ ❑ Are the aerators free of excessive solids build up? ■ ❑ ❑ ❑ # Is the foam the proper color for the treatment process? ■ ❑ ❑ ❑ Does the foam cover less than 25% of the basin's surface? ■ ❑ ❑ ❑ Page # 5 Permit: NCO026689 Owner - Facility: Denton WVVrP Inspection Date: 04/07/2011 Inspection Type: Compliance Evaluation Oxidation Ditches Yes No NA NE Is the DO level acceptable? ■ ❑ ❑ ❑ Are settleometer results acceptable (> 30 minutes)? ■ ❑ ❑ ❑ Is the DO level acceptable?(1.0 to 3.0 mg/1) ■ ❑ ❑ ❑ Are settelometer results acceptable?(400 to 800 ml/I in 30 minutes) ■ ❑ ❑ ❑ Comment: Secondary Clarifier Yes No NA NE Is the clarifier free of black and odorous wastewater? ■ ❑ ❑ ❑ Is the site free of excessive buildup of solids in center well of circular clarifier? ■ ❑ ❑ ❑ Are weirs level? ■ ❑ ❑ ❑ Is the site free of weir blockage? ■ ❑ ❑ ❑ Is the site free of evidence of short-circuiting? ■ ❑ ❑ ❑ Is scum removal adequate? ■ ❑ ❑ ❑ Is the site free of excessive floating sludge? ■ ❑ ❑ ❑ Is the drive unit operational? ■ ❑ ❑ ❑ Is the return rate acceptable (low turbulence)? ■ ❑ ❑ ❑ Is the overflow clear of excessive solidslpin floc? ■ ❑ ❑ ❑ Is the sludge blanket level acceptable? (Approximately''Y4 of the sidewall depth) ■ ❑ ❑ ❑ Comment: A leaking gasket in weir #3 had been fixed since the last inspection. Chemical Feed Yes No NA NE Is containment adequate? ■ ❑ ❑ ❑ Is storage adequate? ■ ❑ ❑ ❑ Are backup pumps available? ❑ ❑ ❑ ■ Is the site free of excessive leaking? ■ ❑ ❑ ❑ Comment: Filtration (High Rate Tertiary) Yes No NA NE Type of operation: Down flow Is the filter media present? ■ ❑ ❑ ❑ Is the filter surface free of clogging? 000 ❑ Is the filter free of growth? ■ ❑ ❑ ❑ Is the air scour operational? ■ ❑ ❑ ❑ Page # 6 Permit: NCO026689 Owner - Facility: Denton WWTP Inspection Date: 04/07/2011 Inspection Type: Compliance Evaluation Filtration (High Rate Tertiary) Yes No NA NE Is the scouring acceptable? ■ ❑ ❑ ❑ Is the clear well free of excessive solids and filter media? ■ ❑ ❑ ❑ Comment: Disinfection -Gas Are cylinders secured adequately? Are cylinders protected from direct sunlight? Is there adequate reserve supply of disinfectant? Is the level of chlorine residual acceptable? Is the contact chamber free of growth, or sludge buildup? Is there chlorine residual prior to de -chlorination? Does the Stationary Source have more than 2500 Ibs of Chlorine (CAS No. 7782-50-5)? If yes, then is there a Risk Management Plan on site? If yes, then what is the EPA twelve digit ID Number? (1000 If yes, then when was the RMP last updated? Comment: De -chlorination Type of system ? Is the feed ratio proportional to chlorine amount (1 to 1)? Is storage appropriate for cylinders? # Is de -chlorination substance stored away from chlorine containers? Comment: Are the tablets the proper size and type? Are tablet de -chlorinators operational? Number of tubes in use? Comment: Aerobic Digester Is the capacity adequate? Is the mixing adequate? Is the site free of excessive foaming in the tank? # Is the odor acceptable? Yes No NA NE Gas ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ Permit: NC0026689 Owner - Facility: Denton WWfP Inspection Date: 04/07/2011 Inspection Type: Compliance Evaluation Aerobic Digester Yes No NA NE # Is tankage available for properly waste sludge? M ❑ ❑ ❑ Comment: sludge is land applied-5x/year Drying Beds Yes No NA NE Is there adequate drying bed space? M ❑ ❑ ❑ Is the sludge distribution on drying beds appropriate? Are the drying beds free of vegetation? # Is the site free of dry sludge remaining in beds? Is the site free of stockpiled sludge? Is the filtrate from sludge drying beds returned to the front of the plant? # Is the sludge disposed of through county landfill? # Is the sludge land applied? (Vacuum filters) Is polymer mixing adequate? Comment: Since the last inspection, sludge has been contained to the drying beds. This was recorded in the plant's Stormwater Pollution Prevention Plan. Effluent Pipe Is right of way to the outfall properly maintained? Are the receiving water free of foam other than trace amounts and other debris? If effluent (diffuser pipes are required) are they operating properly? Comment: Page # 8 N.C.Dept, of ENR MAR, 2 ) 2012 Winston-Salem M__, TOWN OF DENTON March 19, 2012 Mr. Steve Mauney NC Div. of Water Quality Winston Salem Regional Office 585 Waughtown Street Winston Salem, NC 27107 Subject: 2011 Annual Wastewater Report submittal Dear Mr. Mauney; The Town of Denton hereby submits its Annual Wastewater Report for 2011. If you have any questions or comments, please contact me at 336-859-4460 or tbranch@triad.rr.com. Thank you for your assistance in this matter. Sincerely, 4h�x—� Troy B. Branch Town of Denton POTW ORC cc: Jenifer Carter- WSRO 201 W. Salisbury Street P.O. Box 306 Denton, NC 27239 Phone: (336) 859-4231 Fax: (336) 859-3381 Town of Denton 2011 Annual Wastewater Performance Report NPDES No. NCO026689 Collection System Permit No. WQCS00223 Land Application Permit No. WQ0016966 336/859-4460 Created March 2012 Facility: Town of Denton Publically Owned Treatment Works (POTW) Responsible Entity: Town of Denton Town Manager: Genie Russell Operator in Responsible Charge (ORC): Troy Branch The Clean Water Act of 1999 requires that the owner or operator of any wastewater treatment works or wastewater collection system that treats or collects primarily domestic or municipal waste must provide an annual report that summarizes the treatment works or collection system's performance over a 12 month period to its users or customers and to the Department of Environment and Natural Resources. The report must summarize the performance of the treatment works or collection system and define the extent to which any terms of its permit, federal laws, or state laws related to the protection of water quality may have been violated. This report covers the calendar year from January 1, 2011 to December 31, 2011. Town of Denton Wastewater Treatment Plant (W WIT), located on Councill access Road, is a 0.8 MGD (millions of gallons per day) activated sludge process plant. The WWTP accepts and treats wastewater from residents and businesses (commercial and industrial) in Denton, as well as pump and haul septic tank haulers that have been permitted for discharge. In 2011 our W VVTP treated 146 million gallons of wastewater en lieu of 145 million gallons in 2010. There are six (06) wastewater lift stations in and around Denton that pump wastewater from you, the customer, to the W X71P. For those lines in our collection system that are gravity, Polyvinyl Chloride (PVC), Vitrified Clay (VC) and Ductile Iron pipes are used. For those lines that are forced, Cast Iron and PVC pipes are used. The wastewater treatment plant uses the following equipment to treat and disinfect the waste stream. • Helisieve (grit and solids removal) • Four Influent Centrifugal Pumps • Oxidation Ditches (biological process) • Secondary Clarifiers (solids separation) • Tertiary Treatment Sand Filters (fine particulate removal) • Chlorine Contact Chamber (disinfection) • Sulfur Dioxide (dechlorination) • Aerobic Digesters for Bio-solids treatment The Denton WWTP discharges the treated wastewater (effluent) into Lick Creek, which is a part of the Yadkin-PeeDee River basin. The by-product of the treatment process, known as "bio-solids" are land applied due to their high concentrations of phosphorus and nitrogen. The facilities effluent average flow was 0.405 MGD or 405,000 gallons per day for calendar year 2011. The effluent is monitored and analyzed for 17 permitted characteristics. Six of these analytes are tested `in house' at the WWTP laboratory. These parameters include; Flow, Dissolved Oxygen, pH, Conductivity, Ultra Low Range Chlorine Residual, and Temperature. A full list of parameters is available through town hall or the WWTP upon requests. Definitions and Abbreviations Aeration: The mixing or turbulent exposure of water to air and oxygen to dissipate volatile contaminants and other pollutants into the air Biochemical Oxygen Demand (BOD) - The amount of oxygen (measured in mg/L) that is required for the decomposition of organic matter by single -cell organisms, under test conditions. It is used to measure the amount of organic pollution in wastewater. Collection System —A system of pipes and pumps that gathers used water from homes and businesses and conveys it to a wastewater treatment plant (WWTP). Effluent— Wastewater or other liquid, partially or completely treated, flowing from a reservoir, basin, treatment process or treatment plant. Fecal Coliform— The presence of coliform bacteria is an indication of possible pathogenic bacteria contamination. The human intestinal tract is one of main habitats of coliform bacteria. The bacteria may also be found in the intestinal tract of warm-blooded animals, in plants, soil, air and the aquatic environment. Force Main— A pipe that carries wastewater under pressure from the discharge side of a pump to a point of gravity flow. Gravity Sewer— A pipe containing wastewater that flows freely without the aid of mechanical pumping equipment. GPD d— Gallons Per Day Inflow/Infiltration— The unintentional addition of ground water or surface water entering a sewer collection system. Line breaks, roots, broken clean -outs are common causes of I/I. Lift Station— A wastewater pumping station that lifts wastewater to a higher elevation when the continuation of the sewer at reasonable slopes would involve excessive trench depths. Also, an installation of pumps that raise wastewater from areas too low to drain into available sewers. MGD— Million of Gallons per Day Mg/--L— milligrams per liter NOV— Notice of Violation NPDES— National Pollutant Discharge Elimination System POTW—Publicly Owned Treatment Works —Includes the WWTP, Lift Stations and Gravity Sewers as well as Forced Mains SSO— Sanitary Sewer Overflow Ug/Ir Micrograms per liter VUVUTP Wastewater Treatment Plant Performance Overview Town of Denton public works department maintains and operates its Publicly Owned Treatment Works (POTW). The collection system includes gravity sewers, force mains, manholes, pumping equipment and other facilities that collect and convey the water to the wastewater treatment plant (WWTP). The Town of Denton collection system includes approximately 20 miles of pipe and 6 sewer lift stations. The Town of Denton WWTP received three (03) NOV's during calendar year 2011. In March 2011 the WWTP exceeded the weekly geometric mean for Fecal Coliform. No fines or penalties were levied. 04 In ly 2011 the WWTP exceeded the weekly and monthly concentration limits for BOD and the frequency for analyzing Conductivity and pH were not met. A fine was issued in the amount of $1,184.13, and it was pLd n request for remissign was denied. k6-1 '�o [ t_'b ry In November 2011 the P received an NOV for reporting two (02) values of Conductivity and pH en lieu of the required three (03) weekly analyses. The Town of Denton Collection System experienced one (01) Sanitary Sewer Overflow during calendar year 2011. It occurred March 30a' and was due to an exorbitant amount of rain over a 24 hour period. Two 3 manholes were affected, both located on Councill Access Road, losing approximately 18,500 gallons. The NC Department of Natural Resources Winston Salem Regional Office was notified, a report was filed, and clean-up was conducted. NOV was issued by the NCDENR Division of Water Quality, but no fine was levied. \V �J Inspections V c.� \\\ The Town of Denton WWTP was inspected by personnel from the NC DENR Division of Water Quality Winston-Salem Regional Office on April 7, 2012. No Violations were noted. The Town of Denton Sewer Collection System was inspected by personnel from NC DENR Division of Water Quality Winston-Salem Regional Office on October 5, 2011. The only item noted during the inspection was that we did not meet the required footage of sewer line cleaned during calendar year 2010. The State recognized that at the end of 2010 we maintained approximately 11.3 miles of sewer line that was older than 5 years old. We are required to clean greater than 10% annually. We had it documented that we had cleaned 0.75 miles whereas there should have been 1.13 miles cleaned. We felt, and expressed to the auditor, that we had indeed exceeded this amount but our documentation showed otherwise. We have improved our documentation of line cleaning and repair. Prohibited pollutants or liquids include: • Pollutants which create a fire or explosive hazard • Petroleum based products • Any wastewater having a pH of less than 5.0 or greater than 9.5. • Storm water, surface water, ground water, roof run-off, or swimming pool drainage. • Fats, Oils and Greases (FOG) • Medical wastes (i.e. needles, glass fragments, razors and expired and/or unused prescriptions/medications) • Any wastes containing detergents or other substances which may cause excessive foaming in the POTW. • Solid or viscous substances in amounts which will cause obstruction Sewer line inundated with grease in the flow in the POTW resulting in the interference but in no case solids larger than one half inch(1/2'� in any dimension. • Any wastewater containing pollutants, including oxygen -demanding pollutants, (BOD etc) in sufficient quantity, either singly or by interaction with other pollutants, to cause interference with the POTW. • Any wastewater having a temperature greater than 150' F (66°C) or which will inhibit biological activity in the POTW, but in no case wastewater which causes the temperature at the introduction into the WWTP to exceed 104' F (40°C) Fats. Oils. and Grease (FOG Grease is a real "pain in the drain" because it's a major cause of problems we find in sewer lines. Blockages occur when grease (things like oil, butter, margarine, shortening, M-rur pan drippings, and sauces) is poured down the drain. Grease can clog sewer THE lines. Clogged sewer lines lead to sewer spills, which are messy, bad for the environment, and can be expensive. Town of Denton does everything it can to prevent sewer spills, but we can't do it alone. We need your help! The best way you can prevent sewer spills is to never pour grease down the -- --- drain. Instead, pour it into a used soup can, place in freezer to harden, and throw it away in the trash. Don't believe the old saying (1) it's okay to pour grease down the drain as long as you run water at the same time, or (2) it's perfectly fine to dump grease if you use your garbage disposal to break it up. These are myths! It's never okay to pour any type of grease dawn the drain. Here are some more ways to "Cease the Grease"- • Wipe or scrape your dishes before washing them • Remove excess oil from pots and pans with a paper towel and throw it the trash can. • Use strainers in sink drains to collect food scraps and throw away the scraps in the trash. Thank you for your help, and please spread the word about how important it is to "cease the grease". Together, we can protect our sewer system and the environment. For more information, please visit our web site www.townofdenton.com or call 859-4460. If you have questions or comments about this report you may direct them to Mr. Troy Branch, POTW ORC at 859-4460 or you are invited to attend the Board of Commissioners meeting held the first and third Mondays monthly at Town Hall at 201 West Salisbury Street. IFFAA NCDENR North Carolina Department of Environment and Natural Resources Beverly Eaves Perdue Governor Honorable Scott Morris Town of Denton P.O. Box 306 Denton, NC 27239-0306 Subject: NOTICE OF VIOLATION NOV-2011-LV-0052 Permit No. NCO026689 Denton WWTP Davidson County Dear Mr. Morris: Division of Water Quality Coleen H. Sullins Director February 8, 2011 A review of Denton WWTP's monitoring report for October 2010 showed the following violations: Dee Freeman Secretary Parameter Date Limit Value Reported Value Limit Type BOD, 5-Day (20 Deg. C) - Concentration 10/02/10 7.5 mg/l 10.13 mg/1 Weekly Average Exceeded Remedial actions, if not already implemented, should be taken to correct the above noncompliance problem. Please be aware that these violations of your NPDES permit, and any additional violation of State law, could result in enforcement action by the Division of Water Quality. If you should have any questions, please do not hesitate to contact Jenifer Carter at (336) 771-4957. cc: SWP — Central Files WSRO Files North Carolina Division of Water Quality, Winston-Salem Regional Office Location: 585 Waughtown St. Winston-Salem, North Carolina 27107 Phone: 336-771-5000 \ FAX: 336-771-46301 Customer Service: 1-877-623-6748 Internet: wwvv.ncwaterquality.org Sincerely, W. Corey Basinger Interim Regional Supervisor Winston-Salem Regional Office Division of Water Quality NorthCarolina Aaturall l An Equal Opponunity', Affirmative Action Employer [0ov- �o I I - w- C) DMR Review Record Cover Sheet from Staff Member to Regional Supervisor Faciliry--� 1w l Permit/Pipe No.: 9009* Month/Year I?0 10 Monthly Average Violations Parameter Permit Limit DMR Value % Over Limit ee aily Violations Date Parameter Permit Limit/Tvpe DMR Value % Over Limit Monitoring Frequency Violations Date Parameter Permit Frequency Values Reported # of Violations Other Vi /47f, O(A Completed by: Date: / /8 / Regional Water Quality "O— I Supervisor Signoff: ��� 1-"Z' Date: (Y /NmYR) 4 A' NCDENR North Carolina Department of Environment and Natural Division of Water Quality Beverly Eaves Perdue Coleen H. Sullins Governor Director January 27, 2011 CERTIFIED MAIL: 7002 3150 0003 7052 4016 RETURN RECEIPT REQUESTED Ms. Genie M. Russell Town Clerk, Town of Denton P.O. Box 306 Denton, NC 27239-0306 SUBJECT: NOTICE OF VIOLATION Whole Effluent Toxicity (WET) Testing Copper and Zinc Action Level Policy NPDES Permit No. NCO026689 Denton WWTP Davidson County Dear Ms. Russell: RECEIVED N.C. Dept. of ENR I FEB 0 4 2011 Winston-Salem ResourcesRegional Office Dee Freeman Secretary This is to inform you that a review of your toxicity self -monitoring report form for the month of November 2010 indicates a violation of the toxicity limitation specified in your NPDES Permit. You should undertake necessary actions to eliminate or reduce effluent toxicity to acceptable levels. In addition, this correspondence contains important information on the Division's Copper and Zinc Action Level Policy which is triggered by two or more toxicity limit violations that occur during the toxicity testing calendar quarter specified by the toxicity testing special condition of your NPDES Permit. Attachments addressing policy implementation and a copy of the Division's Toxicity Reduction Guidance have been included with this Notice of Violation. You should initiate follow-up toxicity testing upon a single WET test failure which occurs during the toxicity testing calendar quarter. Your facility is currently monitoring for copper and/or zinc and the data indicate that the levels of copper/zinc in your effluent have the potential to cause an exceedance of the NC water quality action level for this (these) parameter(s) in your receiving stream during low stream flow conditions. The policy states that whenever a facility experiences two or more toxicity limit violations during a toxicity testing calendar quarter, the NPDES Permit will be modified to include numeric limits for copper and/or zinc UNLESS the permittee provides one or more of the following: Environmental Sciences Section 1621 Mail Service Center, Raleigh, North Carolina 27699-1621 Location: 4401 Reedy Creek Road, Raleigh, North Carolina 27607 Phone: 919-743-84001 FAX: 919-743-85171 Customer Service: 1-877-623-6748 Internet hftp://h2o.enr.state.nc.us/esb/ One NorthCarolina Aatura!!y An Equal Opportunity 1 Affirmative Action Employer 1. Instream measurements of dissolved metal during low flow conditions that demonstrate compliance with the Action Level standard 2. A revision of the prospective permit limit using improved inputs that in concert with existing or additional monitoring data demonstrates compliance with the Action Level standard 3. Toxicity Identification Evaluation (TIE) results that definitively rule out copper and/or zinc as causes of effluent toxicity 4. Demonstration by an alternative method approved by the Division and EPA that copper and/or zinc is not the cause of toxicity The Division has evaluated your copper and/or zinc monitoring data. The Division has also developed a prospective NPDES permit limit based on your facility's instream waste concentration, the copper and/or zinc action level criterion and a translator procedure. Based on this data your prospective copper permit limit is 13.7 µg/L and your prospective zinc permit limit is 110.9 µg/L. The permittee, upon experiencing two or more toxicity limit violations during a toxicity testing calendar quarter must either provide DWQ with: a) Written notification indicating acceptance of the prospective copper and/or zinc permit limit. Notification is due within 30 days after the date of the second WET Notice of Violation. OR b) Written notification indicating your choice of option(s) as noted on page one of this correspondence. Notification is due within 30 days after the date of the second WET Notice of Violation. DWQ approval of options 1-3 (previous page) is not necessary as the Division expects work to rule out copper and/or zinc as causative effluent toxicants to begin immediately upon the second WET permit limit violation. Written notification (a or b above) shall be sent to: NC Division of Water Quality Environmental Sciences Section Aquatic Toxicology Unit 1621 Mail Service Center Raleigh, NC 27699-1621 Please note that if you choose item b) above, you will be given nine months to submit documentation that eliminates copper and/or zinc as causative effluent toxicants. Your final report should be comprehensive and include all data used to support your conclusion(s). Should the data indicate copper and/or zinc as the source of effluent toxicity or if Environmental Sciences Section 1621 Mail Service Center, Raleigh, North Carolina 27699-1621 Location: 4401 Reedy Creek Road, Raleigh, North Carolina 27607 Phone: 919-743-84001 FAX: 919-743-8517 \ Customer Service: 1-877-623-6748 Intemet: http://h2o.enr.state.nc.us/esb/ NorthCarohna Naturally An Equal Opportunity \ Affirmative Action Employer ..p the data are inconclusive as to copper and/or zinc's role as a toxicity source, then the NPDES Permit will be reopened and the metal limits specified above will be applied to the permit. The report is due nine months after the date of the second WET Notice of Violation. Three copies of the final report shall be submitted to: North Carolina Division of Water Quality Environmental Sciences Section Aquatic Toxicology Unit 1621 Mail Service Center Raleigh, North Carolina 27699-1621 You should consider submitting the above correspondence certified mail. Failure to notify DWQ of your acceptance of a copper and/or zinc limit, failure to notify DWQ of your option selection or failure to make acceptable demonstration to DWQ that copper and/or zinc are not causative effluent toxicants within the stated time frames will result in reopening of the NPDES Permit to include copper and/or zinc numeric limitations, as appropriate. If the effluent is toxic, then we expect work to commence immediately with toxic effluent samples. Failure to initiate work with toxic effluent samples during the study period is unacceptable and will be considered a failure to make acceptable demonstration as cited above. We recommend a minimum of three separate sampling events during the nine month period to definitively rule out copper and/or zinc as causative effluent toxicants. Please note that your actions to notify DWQ of prospective limit acceptance or to notify DWQ of plan option(s) and subsequent submission of a plan are contingent upon two or more toxicity NPDES permit limit violations occurring during a toxicity testing calendar quarter. Also note that the WET limit will remain in your NPDES permit regardless of whether metals are the source of effluent toxicity. The data resulting from your actions to disprove copper and/or zinc as sources of effluent toxicity will determine whether NPDES Permit limits will be assigned for these parameters. You are responsible for initiating actions to address these issues. You may consider entering into a Special Order by Consent (SOC) with DWQ. A SOC provides regulatory relief for specific NPDES permit limit violations and, if signed, will contain a requirement to conduct a Toxicity Reduction Evaluation. The SOC will contain a compliance schedule, stipulated penalties for failing to meet milestone activity dates and may contain upfront penalties to settle past permit limit violations. Environmental Sciences Section 1621 Mail Service Center, Raleigh, North Carolina 27699-1621 Location: 4401 Reedy Creek Road, Raleigh, North Carolina 27607 Phone: 919-743-84001 FAX: 919-743-85171 Customer Service: 1-877-623-6748 Internet: http:/lh2o.enr.state.nc.us/esb/ ne NorthCaro ina Nr hmallif An Equal Opportunity 1 Affirmative Action Employer Additional information regarding the Division's Copper and Zinc Action Level Policy can be found at the following web site - http://www.esb.enr.state.nc.us. Click on the "Aquatic Toxicology" Unit and go to the prompt "AT Downloadable Files" located at the bottom of the page. This web site also contains EPA's "Toxicity Reduction Evaluation Guidance for Municipal Wastewater Treatment Plants." Section 4 of this document contains pertinent information on Toxicity Identification Evaluations. If you have any questions concerning this correspondence, please contact me at (919) 743-8442 or Mr. John Giorgino at (919) 743-8441. Sincerely, Cindy Moore Supervisor, Aquatic Toxicology Unit ATTACHMENTS cc: Corey Basinger- Winston-Salem Regional Office (no attachments) Jenifer Carter- Winston-Salem Regional Office (no attachments) Tom Belnick Point Source Branch (no attachments) Pamala Myers-USEPA Region IV, Atlanta Federal Center, 61 Forsyth St., SW, Atlanta, GA 30303 (no attachments) Central Files (no attachments) Aquatic Toxicology Unit Files (no attachments) Environmental Sciences Section 1621 Mail Service Center, Raleigh, North Carolina 27699-1621 Location: 4401 Reedy Creek Road, Raleigh, North Carolina 27607 Phone: 919-743-84001 FAX: 919-743-85171 Customer Service: 1-877-623-6748 Intemet: http://h2o.enr.state.nc.us/esb/ NorthCarolina Naturally An Equal Opportunity 1 Affirmative Action Employer Carter, Jenifer From: Tedder, Steve Sent: Friday, November 19, 2010 12:29 PM To: Weaver, Charles Cc: Carter, Jenifer; Hudson, Gary; Smith, George Subject: FW: NPDES Repeat Violators Watch List Oct2010 Attachments: RepeatViolatorsWL 20100ct.xlsx Denton: NCO026689: The WWTP has had BOD and TSS violations on a routine basis prior to 2010. The primary issue was the solids handling capabilities (money$$) at the facility. Repeated and escalating penalties and some discussion with management appears to have allowed substantial progress during the past 10 month. This will continue to be an issue with Denton and other small municipalities and the solids inventory is critical to compliance. The ORCs are aware, it's getting the town managers to appropriate sufficient funds for solids removal from the facilities. I believe the appropriate actions have occurred for this facility to date. Captain Stevens Seafood: NCO059218: This facility has a history of compliance problems. We have worked with the owner over the past year to attempt to resolve the issues. This is a septic tank/sand filter system with the sand filter underground. The sand was replaced in April of this year and the system converted from non operational siphons to a pump delivery system. Unfortunately, when the owner's consultant replaced the sand he did not check out the piping to ensure full and complete delivery to the bed. They may have to remove the sand and check out distribution to be sure short-circuiting is not occurring as the next step. Plus, the system is very under -loaded. They are permitted for 2400 gpd and running in the range of 200-400 gpd. This could be starving the system. We have provide the owner small treatment experts contacts to assist. We will continue to work with the owner. Very cooperative and very dependent on the firm that manages the system for him. The very low volume should provide us some continued time to try to resolve the issues as connection is not possibility. Boomer/ Wilkes County Schools: NCO075515: The overall compliance of this system has improved over the past 12 months. This is a septic tank/surface sand -filter design. They are working with Bob DeWeese on treatment design modifications. Possible issues are that the sand needs to be replaced and they may need to go to recirc sand filter to attain continued compliance. There is some information that leads us to believe that the sand filter may be tainted with some floor stripper releases that occurred a couple years back. Elevating penalties may be the method to force County Management to take the next steps to attain constant compliance. 308/309 letter approaches would be totally counterproductive. We need their resources targeted at the plant not a copier. Aqua North Bannertown: NCO088536: This is a green sand filter WTP. Previous violations for TSS and Chlorine. Facility was late getting Dechlor constructed and this office proceeded with penalties to speed the compliance process. Dechlor now installed and no violations since April 2010. No further actions required at this facility at this time. E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties. Steve Tedder Steve.Tedder@NCDENR.gov NC DENR Division of Water Quality 585 Waughtown Street Winston-Salem, NC 27107 (336)-771-4950 Fax (336) 771-4630 From: Manuel, Vanessa Sent: Monday, November 15, 2010 10:25 AM To: Corporon, Joe; Guerra, Bob; Rust, Karen; Scardina, Maureen; Sledge, Bob; Weaver, Charles; Edwards, Roger; Henson, Belinda; Hodge, Al; Krebs, Rob; Shiver, Rick; Smith, Danny; Tedder, Steve Cc: Poupart, Jeff; Matthews, Matt; Tom Belnick; Folley, Dana; Bowden, Kevin Subject: NPDES Repeat Violators Watch List Oct2010 Timing: Need responses by COB Monday, November 291n Background. The NPDES Repeat Violators Watch List, a management tool used for internal purposes only, identifies Major and Minor NPDES wastewater facilities that have received either 5 civil penalty assessments or 10 NOVs within a 12-month period. In light of EPA's interest in what actions non -compliant major facilities are taking independently or through DWQ requirements to evaluate and correct their problems, the Director has also shown interest in what the program is doing to address repeat violators for all NPDES wastewater facilities. The objective of NPDES Repeat Violators Watch List is to identify facilities in chronic noncompliance and to ensure repeat violators are addressed appropriately and suitable measures are taken timely to resolve the noncompliance (e.g., show cause meetings, technical assistance, SOC, etc.). Review Period ending June 30, 2010. There are 27 wastewater facilities listed (23 Minors, 4 Majors) for having received at least 5 penalty assessments during the review period; no facility met the 10 NOV threshold. In addition, 3 of the Majors listed are also on EPA's Facilities Watch List for October 2010. Each region should review the list, indicate what actions have been taken and/or will be taken to address the noncompliance, and provide comments to the appropriate Regional Office Contact by COB Wednesday, November 24tn. Once comments have been received, the ROCs will add the °regions' responses to the NPDES Repeat Violators Watch List, which is located on the NPDES Server/Repeat Violators Watch List. I will need all responses added to the spreadsheet by COB Monday, November 29tn. Let me know if you have any questions. O WATF,0 V Vanessa E. Manuel, Environmental Senior Specialist NC DENR / Division of Water Quality / Surface Water Protection Section Point Source Branch 1617 Mail Service Center, Raleigh, NC 27699-1617 919/807-6392 (wk); 919/807-6495 (fax) E-mail correspondence to and from this address may be subject to the ,forth Carolina Public Records lac and mqv be disclosed to third parties. Denton WWTP NCO026689 Month 9 9 9 9 9 Day 5 12 19 26 Year 2009 2009 2009 2009 2009 Comment Parameter C0310 - BOD, 5-Day (20 Deg. C) - Concentration C0310 - BOD, 5-Day (20 Deg. C) - Concentration C0310 - BOD, 5-Day (20 Deg. C) - Concentration C0310 - BOD, 5-Day (20 Deg. C) - Concentration C0310 - BOD, 5-Day (20 Deg. C) - Concentration Sample Composite Composite Composite Composite Composite UoM mg/I mg/I mg/I mg/I mg/I Value 3.533333 5.933333 6.4 7.133333 6.106667 Cell Type CAWKLAVG CAWKLAVG CAWKLAVG CAWKLAVG CAMONAVG 10 3 2009 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 7.533333 CAWKLA G Q,PI 10 10 2009 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 5.833333 CAWKLAVG 10 17 2009 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 4.7 CAWKLAVG 10 24 2009 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 5. CAWKLAVG 10 31 2009 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 6.666667 CAWKLAVG 10 2009 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 5.55 CAMONAVG 11 7 2009 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 9.233333 CAWKLAVG 11 14 2009 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 4.966667 CAWKLAVG 11 21 2009 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 2.033333 CAWKLAVG 11 28 2009 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 5.366667 CAWKLAVG 11 2009 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 5.261538 CAMONAVG 12 5 2009 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 5.9 CAWKLAVG 12 12 2009 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 9.266667 CAWKLAVG 12 19 2009 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 5.233333 CAWKLAVG 12 26 2009 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 4.466667 CAWKLAVG 12 2009 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 6.185714 CAMONAVG 1 2 2010 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 5.2 CAWKLAVG 1 9 2010 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 4.766667 CAWKLAVG 1 16 2010 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 7.666667 CAWKLAVG 1 23 2010 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 8.4 CAWKLAVG 1 30 2010 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 5.3 CAWKLAVG 1 2010 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 6.533333 CAMONAVG 2 6 2010 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 5.866667 CAWKLAVG 2 13 2010 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 5.366667 CAWKLAVG 2 20 2010 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 4.3 CAWKLAVG 2 27 2010 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 3.433333 CAWKLAVG 2 2010 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 4.741667 CAMONAVG 3 6 2010 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 3.933333 CAWKLAVG 3 13 2010 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 5.2 CAWKLAVG 3 20 2010 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 4.166667 CAWKLAVG 3 27 2010 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 3.633333 CAWKLAVG 3 2010 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 4.093333 CAMONAVG 4 3 2010 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 3.533333 CAWKLAVG 4 10 2010 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 6.8 CAWKLAVG 4 17 2010 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 6.366667 CAWKLAVG 4 24 2010 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 1.933333 CAWKLAVG 4 2010 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 3.975 CAMONAVG 5 1 2010 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 0.8 CAWKLAVG 5 8 2010 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 4.266667 CAWKLAVG 5 15 2010 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 4.466667 CAWKLAVG 5 22 2010 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 6.833333 CAWKLAVG 5 29 2010 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 8.533333 CAWKLAVG 5 2010 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 6.161538 CAMONAVG 6 5 2010 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 6.4 CAWKLAVG 6 12 2010 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 4.333333 CAWKLAVG 6 19 2010 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 6.366667 CAWKLAVG 6 26 2010 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 6.3 CAWKLAVG 6 2010 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 5.121429 CAMONAVG ;f 7 3 2010 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 3.1 CAWKLAVG 7 10 2010 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 2.6 CAWKLAVG 7 1 17 1 2010 1 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 6.066667 CAWKLAVG continued... continued 7 24 2010 CO310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 5.366667 CAWKLAVG 7 31 2010 CO310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 3.766667 CAWKLAVG 7 2010 CO310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/t 4.45 CAMONAVG 8 7 2010 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 3.633333 CAWKLAVG 8 14 2010 CO310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 4.2 CAWKLAVG 8 21 2010 CO310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 2.666667 CAWKLAVG 8 28 2010 CO310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 4.666667 CAWKLAVG 8 2010 CO310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 4.064286 CAMONAVG 9 4 2010 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 5.7 CAWKLAVG 9 11 2010 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 3.3 CAWKLAVG 9 18 2010 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 2.966667 CAWKLAVG 9 25 2010 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 4,266667 CAWKLAVG 9 2010 C0310 - BOD, 5-Day (20 Deg. C) - Concentration Composite mg/I 5,166667 CAMONAVG Denton WWTP NCO026689 411h �5 Month Day Year Comment Parameter Sample UoM Value Cell Type 9 5 2009 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 7.266667 CAWKLAVG 9 12 2009 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 7.466667 CAWKLAVG 9 19 2009 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 8.533333 CAWKLAVG 9 26 2009 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 7.866667 CAWKLAVG 9 2009 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 7.486667 CAMONAVG 10 3 2009 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 6.3 CAWKLAVG 10 10 2009 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 4.466667 CAWKLAVG 10 17 2009 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 5.9 CAWKLAVG 10 24 2009 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 5,066667 CAWKLAVG 10 31 2009 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 5.033333 CAWKLAVG 10 2009 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 5.116667 CAMONAVG 11 7 2009 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 2.6 CAWKLAVG 11 14 2009 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 2.266667 CAWKLAVG 11 21 2009 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0. CAWKLAVG 11 28 2009 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0. CAWKLAVG 11 2009 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 1.123077 CAMONAVG 12 5 2009 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0. CAWKLAVG 12 12 2009 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0.246667 CAWKLAVG 12 19 2009 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0.733333 CAWKLAVG 12 26 2009 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0.2 CAWKLAVG 12 2009 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0.267143 CAMONAVG 1 2 2010 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0.066667 CAWKLAVG 1 9 2010 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0. CAWKLAVG 1 16 2010 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0.033333 CAWKLAVG 1 23 2010 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0.2 CAWKLAVG 1 30 2010 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0.266667 CAWKLAVG 1 2010 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0.125 CAMONAVG 2 6 2010 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0.166667 CAWKLAVG 2 13 2010 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0.266667 CAWKLAVG 2 20 2010 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0.033333 CAWKLAVG 2 27 2010 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0.1 CAWKLAVG 2 2010 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0.141667 CAMONAVG 3 6 2010 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0.3 CAWKLAVG 3 13 2010 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0.6 CAWKLAVG 3 20 2010 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0.4 CAWKLAVG 3 27 2010 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0.5 CAWKLAVG 3 2010 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0.393333 CAMONAVG 4 3 2010 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0.166667 CAWKLAVG 4 10 2010 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 1.333333 CAWKLAVG 4 17 2010 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 1.033333 CAWKLAVG 4 24 2010 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0.333333 CAWKLAVG 4 2010 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0.833333 CAMONAVG 5 1 2010 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 4-.44 GAMONAUG 5 8 2010 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Grab(?) agA mg/I 2-7-2 GAMQNAVG 5 15 2010 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 5�4 6AM9NAV6 5 22 2010 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0-765 GAMONAVG 1 5 29 2010 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Grab(?) n9A mg/I 2 64 GAMONAVG 1 5 2010 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 3-4 CAMONAVG I 6 5 2010 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0.133333 CAWKLAVG 6 12 2010 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0. CAWKLAVG 6 19 2010 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0.833333 CAWKLAVG 6 26 2010 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0.5 CAWKLAVG 6 2010 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0.321429 CAMONAVG 7 3 2010 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0.1 CAWKLAVG 7 10 2010 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0. CAWKLAVG 53 WKLAVG .73 WKLAVG .47 WKLAVG i.1 WKLAVG i.1 WKLAVG 1.88 continued... continued 7 17 2010 CO610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0. CAW KLAVG 7 24 2010 CO610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0. CAWKLAVG 7 31 2010 CO610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0. CAWKLAVG 7 2010 CO610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0. CAMONAVG 8 7 2010 CO610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0.033333 CAWKLAVG 8 14 2010 CO610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0.033333 CAWKLAVG 8 21 2010 CO610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0.166667 CAWKLAVG 8 28 2010 CO610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0.1 CAWKLAVG 8 2010 CO610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0.071429 CAMONAVG 9 4 2010 CO610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0. CAWKLAVG 9 11 2010 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0.066667 CAWKLAVG 9 18 2010 CO610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0. CAWKLAVG 9 25 2010 CO610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 0.033333 CAWKLAVG 9 2010 C0610 - Nitrogen, Ammonia Total (as N) - Concentration Composite mg/I 1 0.6 CAMONAVG Denton WWTP N CO026689 Month Day Year Comment Parameter Sample UoM Value Cell Type 9 2009 50050 - Flow, in conduit or thru treatment plant Recorder mgd 0.299233 CAMONAVG 10 2009 50050 - Flow, in conduit or thru treatment plant Recorder mgd 0.315032 CAMONAVG 11 2009 50050 - Flow, in conduit or thru treatment plant Recorder mgd 0.527067 CAMONAVG 12 2009 50050 - Flow, in conduit or thru treatment plant Recorder mgd 0.656419 CAMONAVG 1 2010 50050 - Flow, in conduit or thru treatment plant Recorder mgd 0.553903 CAMONAVG 2 2010 50050 - Flow, in conduit or thru treatment plant Recorder mgd 0.64775 CAMONAVG 3 2010 50050 - Flow, in conduit or thru treatment plant Recorder mgd 0.527323 CAMONAVG 4 2010 50050 - Flow, in conduit or thru treatment plant Recorder mgd 0.3619 CAMONAVG 5 2010 50050 - Flow, in conduit or thru treatment plant Recorder mgd 0.387 CAMONAVG 6 2010 50050 - Flow, in conduit or thru treatment plant Recorder mgd 0.316567 CAMONAVG 7 2010 50050 - Flow, in conduit or thru treatment plant Recorder mgd 0.28571 CAMONAVG 8 2010 50050 - Flow, in conduit or thru treatment plant Recorder mgd 0.350129 CAMONAVG 9 1 1 2010 1 50050 - Flow, in conduit or thru treatment plant Recorder mgd 0.342433 CAMONAVG Month Day Year Comment Parameter Sample UoM Value Cell Type 9 2009 50060 - Chlorine, Total Residual Grab ug/I 11.384615 CAMONAVG 10 2009 50060 - Chlorine, Total Residual Grab ug/I 12.923077 CAMONAVG 11 2009 50060 - Chlorine, Total Residual Grab ug/I 9.692308 CAMONAVG 12 2009 50060 - Chlorine, Total Residual Grab ug/I 9.785714 CAMONAVG 1 2010 50060 - Chlorine, Total Residual Grab ug/I 8.583333 CAMONAVG 2 2010 50060 - Chlorine, Total Residual Grab ug/I 13.8125 CAMONAVG 3 2010 50060 - Chlorine, Total Residual Grab ug/I 9.214286 CAMONAVG 4 2010 50060 - Chlorine, Total Residual Grab ug/I 7.615385 CAMONAVG 5 2010 50060 - Chlorine, Total Residual Grab ug/I 8. CAMONAVG 6 2010 50060 - Chlorine, Total Residual Grab ug/I 11.357143 CAMONAVG 7 2010 50060 - Chlorine, Total Residual Grab ug/I 11.928571 CAMONAVG 8 2010 50060 - Chlorine, Total Residual Grab ug/I 10.846154 CAMONAVG 9 1 1 2010 1 50060 - Chlorine, Total Residual Grab ug/I 8.846154 CAMONAVG Cover Sheet from Staff Member to Regional Supervisor DMR Review Record Facility: Grufoo (A01 Permit/Pipe No.: 6 & Month/Year � v-w/o Monthly Average Violations Parameter Permit Limit DMR Value % Over Limit 0 ;7a67 Date Date Weekly/Daily Violations Parameter Permit Urnit/Tvpe DMR Value % Over Limit Monitoring Frequency Violations Parameter Permit Frequency Values Reported # of Violations Other Violations ®x.ls SUS ism m C?M /0 , lwj4l �a I-n lulu -�2a10 fiy- Completed by: av Date: v2 Regional Water Quality / y Supervisor Signoff: Date: IJ ,Zmi, 10 Aria o NCDENR North Carolina Department of Environment and Natural Resources Beverly Eaves Perdue, Governor Mayor Scott Morris Town of Denton P.O. Box 306 Denton, N.C. 27239-0306 Dear Permittee: Division of Water Quality Coleen H. Sullins, Director September 30, 2010 RECEIVED N.C, Dept. of ENR OCT 052010 Winston-Salem Regional Office Dee Freeman, Secretary SUBJECT: Notice of Facility Status Change NPDES Permit NCO026689 Denton WWTP Davidson County A recent internal review of the Division's facility classifications determined that the subject municipal wastewater treatment plant is improperly classified as a Minor facility. The Denton WWTP should be classified as a Major facility, per the definition for Major/Minor facilities found in the General Statute: § 143-215.31). Fee schedule for water quality permits. (a) Annual fees for discharge and nondischarge permits under G.S. 143-215.1. — (1) Major Individual NPDES Permits. — The annual fee for an individual permit for a point source discharge of 1,000,000 or more gallons per day, a publicly owned treatment works (POTW) that administers a POTW pretreatment program, as defined in 40 Code of Federal Regulations § 403.3 (1 July 1996 Edition), or an industrial waste treatment works that has a high toxic pollutant potential is three thousand four hundred forty dollars ($3,440). Beginning in 2011, you will be billed the permit fee for a Major NPDES permit for the subject facility. If at any time your pretreatment program becomes inactive, your facility status will revert to Minor. If you have questions regarding preparation of the report, contact Mr. Tom Belnick at (919) 807- 6390 or via e-mail [tom.belnick@ncdenr.gov]. Sincerely, Coleen H. Sullins cc: Central Files Winston-Salem Regional Office NPDES file 1617 Mail Service Center, Raleigh, North Carolina 27699-1617 One 512 North Salisbury Street, Raleigh, North Carolina 27604 NorthCarolina Phone: 919 8076300 /FAX 919 807-6495 /Internet: www.ncwaterquality.org ;Vatmrally An Equal Opportunity/Affirmative Action Employer — 50% Recycled/10% Post Consumer Paper =�� NCDENR North Carolina Department of Environment and Natural Resources Beverly Eaves Perdue Governor Honorable Scott Morris Town of Denton P.O. Box 306 Denton, NC 27239-0306 Subject: NOTICE OF VIOLATION NOV-2010-LV-0313 Permit No. NCO026689 Denton WWTP Davidson County Dear Mr. Morris: Division of Water Quality Coieen H. Sullins Director August 20, 2010 A review of Denton WWTP's monitoring report for May 2010 showed the following violations: Dee Freeman Secretary Parameter Date Limit Value Reported Value Limit Type BOD, 5-Day (20 Deg. C) - Concentration 05/29/10 7.5 mg/l 8.53 mg/l Weekly Average Exceeded BOD, 5-Day (20 Deg. C) - Concentration 05/31/10 5 mg/l 6.16 mg/l Monthly Average Exceeded Remedial actions, if not already implemented, should be taken to correct the above noncompliance problem. Please be aware that these violations of your NPDES permit, and any additional violation of State law, could result in enforcement action by the Division of Water Quality. If you should have any questions, please do not hesitate to contact Jenifer Carter at (336) 771-4957. cc: SWP — Central Files ,'SRO Files a North Carolina Division of Water Quality, Winston-Salem Regional Office Location: 585 Waughtown St. Winston-Salem; North Carolina 27107 Phone: 336-771-50001 FAX: 336-771-46301 Customer Service: 1-877-623-6748 Internet: www.ncwaterquality.org Sincerely, Steve W. Tedder Surface Water Regional Supervisor Winston-Salem Regional Office Division of Water Quality One NorthCarolina Natma!!t, An Equal Opportunity'. Affirmative Action Employer FEB 7 IN Winston-Salem'' I Regional office Town of Denton 2009 Annual Wastewater Performance Report NPDES No. NCO026689 Collection System Permit No. WQCS00223 Land Application Permit No. WQ0016966 336/85974460 Created January 2010 Facility: Town of Denton Wastewater Collection System and Wastewater Treatment Plant Responsible Entity: Town of Denton Town Manager: Genie Russell Operator in Responsible Charge (ORC): Troy Branch The Clean Water Act of 1999 requires that the owner or operator of any wastewater treatment rn co works or wastewater collection system that treats ��yI or collects primarily domestic or municipal waste Cal 0 must provide an annual report that summarizes C the treatment works or collection system's per - CD ^ formance over a 12 month period to it's users or ® customers and to the Department of Environ- mentand Natural Resources. The report must summarize the performance of the treatment works or collection system and de- fine the extent to which any terms of it's permit, federal laws, or state laws related to the protection of water quality may have been violated. This report covers the calendar year from January 1, 2009 to December 31, 2009. System Description The Town of Denton Wastewater Treatment Plant (WWTP), located on Councill access Road, is a 0.8 MGD (millions of gallons per day) activated sludge process plant. The WWTP accepts and treats wastewater from residents and businesses (commercial and industrial) in Denton, as well as pump and haul septic tank haulers that have been permitted for discharge. In 2009 our WWTP treated 162 million gallons of wastewater en lieu of 145 million gallons in 2008. There are six (06) wastewater lift stations in and around Denton that pump wastewater from you; the customer, to the WWTP. For those lines in our collection system that are gravity, Polyvinyl Chloride (PVC), Vitrified Clay (VC) and Ductile Iron pipes are used. For those lines that are forced, Cast Iron and PVC pipes are used. The treatment facility uses the following equipment to treat and disinfect the waste stream. Helisieve (grit and solids removal) Four Influent Centrifugal Pumps Oxidation Ditches (biological process) Secondary Clarifiers (solids separation) Tertiary Treatment Sand Filters (fine particulate removal) Chlorine Contact Chamber (disinfection) Sulfur Dioxide (dechlorination) Aerobic Digesters for Bio-solids treatment Customer F. water treatment Wastewater pI nt treatment plant Rivers; lakes, groutidwater, etc. [im3l iirx��. ,,.....a'him11mcd. e Denton WWTP discharges the treated wastewater- b— ■ rkrn u:Y,cr .:__ thn. n x7sr <4.� xau'r. (effluent) into Lick Creek, which is apart of the Yadkin- PeeDee River basin. The by-product of the treatment process, known as "bio-solids" are land ap- plied due to their high concentrations of phosphorus and nitrogen. The facilities effluent average flow was 0.444 MGD or 444,000 gallons per day for calendar year 2009. The effluent is monitored and analyzed for 17 permitted characteristics. Six of these analytes are tested in house at the WWTP laboratory. These parameters include; Flow, Dissolved Oxygen, pH, Conductivity, Ultra Low Range Chlorine Residual, and Temperature. Definitions and Abbreviations Collection Sys` tern —A system of pipes and pumps that gathers used water from homes and businesses and conveys it to a wastewater treat- ment plant (WWTP). Effluent— Wastewater or other liquid, partially or completely treated, flowing from a reservoir, basin, treatment process or treatment plant. Fecal Coliform— The presence of coliform bacte- ria is an indication of possible pathogenic bacte- ria contamination. The human intestinal tract is one of main habitats of coliform bacteria. The bacteria may also be found in the intestinal tract of warm-blooded animals, in plants, soil, air and the aquatic environment. Force Main— A pipe that carries wastewater un- der pressure from the discharge side of a pump to a point of gravity flow. Gravity Sewer— A pipe containing wastewater that flows freely without the aid of mechanical pumping equipment. PD d G— Gallons Per Day Inflow/Infiltration— The unintentional addition of ground water or surface water entering a sewer collection system. Line breaks, roots, bro- ken clean -outs are common causes of I/I. Lift Station— A wastewater pumping station that lifts wastewater to a higher elevation when the continuation of the sewer at reasonable slopes would involve excessive trench depths. Also, an installation of pumps that raise wastewater from areas too low to drain into available sewers. MGD— Millions or Gallons per Day �Lr milligrams per literV N — Notice of Violation NPDES— National Pollutant Discharge Elimina- tion System SSO— Sanitary Sewer Overflow. Ug/Lr- Micrograms per liter #/100 ml— Number of colonies per 100 mis Performance Overview Town of Denton public works department main- tains and operates its Publicly Owned Treatment Works (POTW). Sometimes ground water, surface water and storm water may be present also, espe- cially during rain events. The collection system includes gravity sewers, force mains, manholes, pumping equipment and other facilities that col- lect and convey the water to the wastewater treat- ment plant (WWTP). The Town of Denton collection system includes approximately 20 miles of pipe and 6 sewer lift stations. Denton experienced four collection system sani- tary sewer overflows during 2009. The first occurred January 6, 2009 when an esti- mated 38,000 gallons spilled from manholes 3-3 and 3-4 located on Council Access Road into Bully Boy Creek. The spill was attributed to heavy rains and I/I. Appropriate agencies were notified. A NOV was issued to Denton. No fines were assessed. The second SSO occurred March 1, 2009 when an estimated 33,000 gallons entered Bully Boy Creek - from manholes 3-3 & 3-4 on Council Access Road. The spill occurred due to heavy rains and I/ I. Appropriate agencies were notified. A NOV was issued to Denton. No fines were assessed.. The third SSO occurred June 5, 2009 when an estimated 13,000 gallons entered Bully Boy Creek from manholes 3-3 &3-4 on Council Access Road. The spill occurred due to severe weather and I/I. The appropriate agencies were notified. A NOV was issued. No fines were assessed. The forth occurred on November 11, 2009 when an estimated 86,000 gallons overflowed from man- holes 373 & 3-4 on Council Access Road. The appropriate agencies were notified. A NOV was issued. No fines have been assessed. Bully Boy Creek is a seasonal stream as well as the receiving ditch for the town's storm sewers. During the calendar year the wastewater treatment plant received NOV's to it's NPDES permit. in Apru 2009 the Town was issued an NOV for exceeding the monthly limits of BOD and NH3 (N) as well as Fecal Coliform weekly limit. No fine was received. In May 2009 the Town received an NOV for ex- ceeding weekly and monthly limits for BOD and NH3(N).A fine of $4,003.67 was issued. The Town requested remission of the fine due to budget restraints. In June 2009 the Town received an NOV for ex- ceeding weekly and monthly limits for BOD and NH3(N) and Fecal Coliform weekly limit. A fine of $4228.00 was issued. The Town requested re- mission of the imposed fine. In July 2009 the Town received a NOV and fine of $3478.00 for exceeding weekly and monthly Emits of BOD and NH3(N). The Town requested remission of the imposed fine. In August 2009 the Town received a NOV and fine of $3,478.00 for exceeding monthly and weekly limits of BOD, NH3(3) and TSS. Remis- sion of the fine was requested and the fine was reduced to $1,103.00 In September and October 2009 the Town ex- ceeded weekly and monthly limits of BOD and NH3(N). A NOV was issued and a fine of $1,978.00 was issued for September and $1,040.50 was issued for October 2009. Request for remis- sion has been sent to the State for the above fines but no response has been received as of the date of this brochure. In November the Town returned to full compli- ance. The problems the WWTP were experiencing were related to a build-up of solids within the wastes stream of the treatment facility. The town increased funding to the land application of bio- solids and the situation has been rectified. Under State and Federal laws, no user shall con- tribute or cause to be contributed into the POTW, any pollutant or wastewater which causes interfer- ence or pass through. These prohibitions apply to all users of a POTW whether or not the user is an industrial, commercial or domestic user. • Prohibited pollutants or wastewater include: • Pollutants which create a fire or explo- sive hazard • Petroleum based products • Any wastewater having a pH of less than 5.0 or greater than 9.5. • Storm water, surface water, ground water, roof run-off, or swimming pool drainage. • Fats, Oils and Greases (FOG) • Medical wastes • Any wastes containing detergents or other substances which may cause ex- cessive foaming in the POTW. This report will not be mailed, however a copy of this report can be obtainedfrom the Town of Denton Town Hall between the hours of 9:00 am and S pm Monday thru Friday, beginning February 28, 2010. It will also be available on the Town's web - site www.townofdenton.com The Town of Denton Board of Commissioners holds its public meetings the first and third Mon- day of each month at 7:30 at Town Hall. The community is invited to attend these meetings and utilize this time to share concerns and objec- tions that you may have. Cover Sheet from Staff Member to Regional Supervisor DNIR Review Record Facility -at" Permit/Pipe No.: N 2 Month/Year O) a0(0 Monthly Average Violations Parameter Permit Limit DMR Value % Over Limi 0 , i� Weekly/Daily Violations Date Parameter Permit Limit/Tvpe DMR Value % Over Limit Monitoring Frequency Violations Date Parameter Permit Frequency Values Reported # of Violations Other Violations i Jr �i1 TUB A 1141�4 A14 Av 7 0 1 Completed by: I _ el'A r�x Regional Water Quality , Supervisor Signoff: Date: �% 1 Date: � )/,�1 - _)V 10 , LV — 050 Cover Sheet from V V C�Staff Member to Regional Supervisor 1q DMR Review Record Facility: Pertnit/Pipe No.: W XQWU Month/Year DILI C20( 0 Monthly Average Violations Parameter Permit Limit DMR Value % Over Limit �aily Violations Date Parameter Permit Limit/Tvpe DMR Value % Over Lit Monitoring Frequency Violations Date Parameter Permit Frequency Values Reported # of Violations Other Violations r 61. Completed by: Date: r IZ t O Regional Water Quality Supervisor Signoff: 4(� Date: A& 06V 4140,rn. Av • • NCDENR North Carolina Department of Environment and Natural Resources Division of Water Quality Beverly Eaves Perdue Coleen H. Sullins Governor Director February 8, 2010 5455 Mr. Troy B. Branch Town of Denton WWTP PO Box 306 Denton, NC 27239- SUBJECT: North Carolina Wastewater/Groundwater Laboratory Certification Renewal FIELD PARAMETERS ONLY Dear Mr. Branch: Dee Freeman Secretary FEB 10 2010 Winston•Salern i R��°nat Offic e The Department of Environment and Natural Resources, in accordance with the provisions of NC GS 143- 215-.3 (a) (10), 15 NCAC 2H .0800, is pleased to renew certification for your laboratory to perform specified environmental analyses required by EMC monitoring and reporting regulations 15 NCAC 2B .0500, 2H .0900 and 2L .0100, .0200, .0300, and 2N .0100 through .0800. Enclosed for your use is a certificate describing the requirements and limits of your certification. Please review this certificate to insure that your laboratory is certified for all parameters required to properly meet your certification needs. Please contact us at 919-733-3908 if you have questions or need additional information. Sincerely, Pat Donnelly Certification Branch Manager Laboratory Section Enclosure cc: Ramon L. Cook Dana Satterwhite Winston-Salem Regional Office DENR DWO Laboratory Section INC Wastewater/Groundwater Laboratory Certification Branch 1623 Mail Service Center, Raleigh, North Carolina 27699-1623 One Location: 4405 Reedy Creek Road. Raleigh, North Carolina 27607-6445 NO1�hCaI 011na Phone: 919-733-39081 FAX: 919-733-6241 Internet: www.dwglab.org ��y����� An Equal Opportunity 1 Affirmative.Action Employer Customer Service: 1-877-623-6748 www,ncwaterquality.org `' %tzl STATE OF NORTH CAROLINA DEPARTMENT OF THE ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER QUALITY LABORATORY CERTIFICATION PROGRAM In accordance with the provisions of N.C.G.S. 143-215.3 (a) M 143-215.3 (a)(10) and NCAC 2H.0800. 2010 TOWN OF DENTON WWTP Is hereby certified to perform environmental analysis as listed on Attachment I and report monitoring data to DWQ for compliance with NPDES effluent surface water, groundwater, and pretreatment regulations. By reference 15A NCAC 2H .0800 is made a part of this certificate. This certificate does not guarantee validity of data generated, but indicates the methodology, equipment, quality control procedures, records, and proficiency of the laboratory have been examined and found to be acceptable. This certificate shall be valid until December 31, 2010 Certificate No 5455 Pat Donnelly — -- ---- --- Attachment I North Carolina Wastewater/Groundwater Laboratory Certification Certified Parameters Listing ab Name: Town of Denton WWTP Certificate Number: 5455 ddress: PO Box 306 Effective Date: 01/01/2010 Denton, NC 27239- Expiration Date: 12/31/2010 Date of Last Amendment: ie above named laboratory, having duly met the requirements of 15A NCAC 21-1.0800, is hereby certified for the measurement of the parameters listed below. CERTIFIED PARAMETERS 'ORGANICS °SIDUAL CHLORINE Std Method 4500 Cl G )NDUCTIVITY Sid Method 2510B SSOLVED OXYGEN 3td Method 4500 O G I 3td Method 4500 H B ;MPERATURE 3td Method 2550E lertification requires maintance of an acceptable quality assurance program, use of approved methodology, and satisfactory performance on evaluation samples. Laboratories are ct to civil penalties and/or decertification for infractions as set forth in 15A NCAC 2H.0807. A NCDENR/DWQ FACT SHEET FOR NPDES PERMIT DEVELOPMENT Town of Denton WWTP* NCO026689 Facility Information (1.) Facility Name: ;Town of Denton —....._........_._.....................--._...__._..__...._.__-_.._.._ _—... ..._........._.........................._.._.—_.__........._..._..._ --- ......_..----.._.._.._.._._....._.__._.._.._....._. _ _ ---- (2.) Permitted Flow (MGD): 0.8 MGD (6.) County: Davidson ... . ........................... _...._...................._....._...................._.......................... _......._._....._.........._._....-_.__._._..._.............................,....................................._..._...._.....-----..............._......._....._._._.....----__................... __........................... _..... (3.) Facility Class: ;III (7.) Regional Office: Winston-Salem _ __.... _ _.__... __................--------....---..........._....----.._..._..............................�... __ __ .._-.........__..._.._._ —. (4.) Pretreatment Program_ Yes i (8.) USGS Topo Quad L18SW — -- ..... ......— .............. . (5.) Permit Status: Renewal (9.) USGS Quad Name: I High Rock Stream Characteristics (1.) Receiving Stream: Lick G eek (7.) Drainage Area (mi'): 0.57 — .........................__................ (2.) Sub -basin: . _ .._...... i 03-07-0� . ........__...... ............ �8.) Summer 7Q10 (cfs) __.. 0 _._ ............................. --..._.... Stream Index Number: _..... 12 126 _(3) ............_....___ (9.) Winter 7Q10 (cfs): _�............................................................ 0 T(3.) 4. Stream Classification: WS IV 10. 30 2 cfs • ) Q _ .............................. 0.09 _�..._ ...._.. (5.) 303(d) Status: --- — ---—.�_.._— Listed .._ --� --- (11.) Average Flow (cfs): 0.5 .__..........-.......................................... _.......................................... _.........._.................. __....._.....,.................._.._._._..__..__.._..._..........._...._..._........._.......-- (6.) 305(b) Status: I - -........................................................................................................_...............__...._....----...._...---......----.............. (12.) IWC %: 100 1.0 Proposed Changes Incorporated into Permit Renewal Add daily maximum mercury limit of 12 ng/1(0.012 ug/1) with 2/month monitoring frequency, based on reasonable potential to cause an exceedance of the water quality standard Remove weekly average and daily maximum nickel limits because of no reasonable potential to cause an exceedance of the water quality standard Modification and addition of wastewater treatment components added to the supplement to cover sheet. 2.0 Summary The Town of Denton currently has a design capacity of 0.8 MGD and continues its discharge to Lick Creek. The facility has tertiary limits of 5/2/6 (summer) and 10/4/6 (winter) with monitoring for fecal coliform, TRC, temperature, TN and TP, mercury, copper, nickel and zinc. The Denton WWTP discharges into Lick Creek, which is listed on the 2006 303d list with impairment for aquatic life with low dissolved oxygen. Potential sources are agriculture and other unknown sources. The 2008 Yadkin Basinwide Plan notes that Lick Creek is impaired for DO and impacted by nutrient inputs from the upstream NPDES WWTP. Denton WWTP has two non -categorical SIUs. Century Hosing (0.0243 MGD) and Surratt Hosiery Mills (.0043 MGD). It is recommended that the modified pretreatment program with Short Term Monitoring Plan be continued during the next permitting cycle. Town of Denton WWTP NC0026689 NPDES Permit Fact Sheet - 08/ 12/09 Page 2 3.0 Compliance Summary Correspondence File Review/Compliance History The Denton WWTP appears to have had consistent problems in the last three years in meeting BOD5, TRC, NH3, fecal coliform and chronic toxicity limits. In the renewal application, the facility asked for some relaxation of the stringent BOD5 and NH3 limits. There have been several permit violations and NOVs issued by DWQ. The facility has sought technical assistance from DWQ (June 2009) and the NC Rural Water Association (July 2008) to help with trying to correct treatment problems. Site visits and written recommendations have been given to the facility to help bring them in compliance. It appears that during the hottest summer months, compliance with BOD5 and NH3 are the most problematic. There is no mechanism to reduce the facility's permit limits for BOD5 and NH3 and with the stream listed as impaired on the 303d list, making discharge limits less stringent is not recommended. See attached reported on limits and monitoring violations. The Town of Denton is a member of the Yadkin Pee Dee monitoring coalition, so instream requirements have been waived. At this time, however, there is no downstream monitoring station in the vicinity of the outfall. RPA Analysis A RPA was conducted for existing limited/ monitored metals: mercury, nickel, copper and zinc. Data from 2007 through May 2009 was input into the RPA and evaluated to determine whether monitoring or limited were needed. Copper and zinc- both parameters have NC action level standards that normally are not limited unless they are shown to be causative of toxicity test failures. The RPA showed that both parameters had reasonable potential to exceed the state action levels instream. However because there are no ongoing toxicity test problems, will recommend that monthly monitoring for both copper and zinc continue in the permit. Mercury - there was detection in 23 of 24 samples submitted. The maximum predicted concentration was greater than the allowable concentration and therefore showed reasonable potential to exceed the water quality standard instream. A limit of 0.012 ug/1 or 12 ng/1 will be recommended to be put in the permit. This same parameter was deleted during the last permit renewal however since January 2007, there have been three submitted data values that have been greater than 12 ng/1. Based on this data, the facility's discharge does not show reasonable potential to exceed mercury water quality standards. The limit will be removed and monitoring reduced from 2/month to monthly. Nickel - only 1 of 56 samples showed nickel levels above the detection limit. The maximum predicted concentration was less than the allowable concentration. There was no reasonable potential shown to exceed the water quality standard. It is recommended that the nickel limit be dropped from the permit and that nickel continue to be monitored in the Denton pretreatment program. Additional data review Facility did run PPAs for the renewal application. Most data was below detection however, there were detected hits of chloroform and dichlorobromomethane. Will not recommend any monitoring for these parameters. They will be sampled in the next four PPAs. NPDES Permit Fact Sheet — 08/ 12/09 Page 3 Town of Denton WWTP NCO026689 WET Test Results Self monitoring summary from January 2005 through April 2009 was reviewed. The most recently submitted DMR (May 2009) indicated that Denton had failed its chronic tox test. The facility has passed 16 of 19 WET tests within the past 5 years. The failures were in November 2006, February 2007 and May 2009. The cause for these failures has not yet been determined. It is recommended that the chronic ceriodaphnia toxicity test at 90% be renewed for this permit cycle. . 4.0 Proposed Schedule for Permit Issuance Draft Permit to Public Notice: 7/29/09 Permit Scheduled to Issue (tentative): 9/21/09 5.0 State Contact Information If you have any questions on any of the above information or on the attached permit, please contact Jackie Nowell at (919) 807-6386 or jackie.nowell®ncdenr.gov. Copies of the following are attached to provide further information on the permit development: • Draft permit • RPA analysis NPDES Recommendation by: Signature Date Town of Denton WWTP NC0026689 NPDES Permit Fact Sheet — 08/ 12/09 Page 4 Regional Office Comments: Regional Recommendation by: Signature Date Reviewed and accepted by: Regional Supervisor: Signature Date NPDES Unit Supervisor: Signature Date • - RECEIVED r� -ft.-Oft�� N.C. Deot of ENR NCDENR JUL 2 9 2009 North Carolina Department of Environment and Natural Resource Winston-Salem Division of Water Quality Regional Office Beverly Eaves Perdue Coleen H. Sullins Dee Freeman Governor Director Secretary July 27, 2009 CERTIFIED MAIL: 7007 2760 0001 9282 0082 RETURN RECEIPT REQUESTED Mr. F. E. Isenhour Town Manager Town of Denton P.O. Box 306. Denton, North Carolina 27239-0306 SUBJECT: NOTICE OF VIOLATION Whole Effluent Toxicity (WET) Testing Copper and Zinc Action Level Policy NPDES Permit No. NCO026689 Denton W WTP Davidson County Dear Mr. Isenhour: This is to inform you that a review of your toxicity self -monitoring report form for the month of May 2009 indicates a violation of the toxicity limitation specified in your NPDES Permit. You should undertake necessary actions to eliminate or reduce effluent toxicity to acceptable levels. In addition, this correspondence contains important information on the Division's Copper and Zinc Action Level Policy which is triggered by two or more toxicity limit violations that occur during the toxicity testing calendar quarter specified by the toxicity testing special condition of your NPDES Permit. Attachments addressing policy implementation and a copy of the Division's Toxicity Reduction Guidance have been included with this Notice of Violation. You should initiate follow-up toxicity testing upon a single WET test failure which occurs during the toxicity testing calendar quarter. Your facility is currently monitoring for copper and/or zinc and the data indicate that the levels of copper/zinc in your effluent have the potential to cause an exceedance of the NC water quality action level for this (these) parameter(s) in your receiving stream during low stream flow conditions. The policy states that whenever a facility experiences two or more toxicity limit violations during a toxicity testing calendar quarter, the NPDES Permit will be modified to include numeric limits for copper and/or zinc UNLESS the permittee provides one or more of the following: Environmental Sciences Section 1621 Mail Service Center, Raleigh, North Carolina 27699-1621 Location: 4401 Reedy Creek Road, Raleigh, North Carolina 27607 Phone: 919-743-84001 FAX: 919-743-85171 Customer Service: 1-877-623-6748 Internet: http://h2o.enr.state.nc.us/esb/ oni On e NaturallY An Equal Opportunity 1 Affirmative Action Employer 1. Instream measurements of dissolved metal during low flow conditions that demonstrate compliance with the Action Level standard 2. A revision of the prospective permit limit using improved inputs that in concert with existing or additional monitoring data demonstrates compliance with the Action Level standard 3. Toxicity Identification Evaluation (TIE) results that definitively rule out copper and/or zinc as causes of effluent toxicity 4. Demonstration by an alternative method approved by the Division and EPA that copper and/or zinc is not the cause of toxicity The Division has evaluated your copper and/or zinc monitoring data. The Division has also developed a prospective NPDES permit limit based on your facility's instream waste concentration, the copper and/or zinc action level criterion and a translator procedure. Based on this data your prospective copper permit limit is 13.7 µg/L and your prospective zinc permit limit is 111.0 jig/L. The permittee, upon experiencing two or more toxicity limit violations during a toxicity testing calendar quarter must either provide DWQ with: a) Written notification indicating acceptance of the prospective copper and/or zinc permit limit. Notification is due within 30 days after the date of the second WET Notice of Violation. OR b) Written notification indicating your choice of option(s) as noted on page one of this correspondence. Notification is due within 30 days after the date of the second WET Notice of Violation. DWQ approval of options 1-3 (previous page) is not necessary as the Division expects work to rule out copper and/or zinc as causative effluent toxicants to begin immediately upon the second WET permit limit violation. Written notification (a or b above) shall be sent to: NC Division of Water Quality Environmental Sciences Section Aquatic Toxicology Unit 1621 Mail Service Center Raleigh, NC 27699-1621 Please note that if you choose item b) above, you will be given nine months to submit documentation that eliminates copper and/or zinc as causative effluent toxicants. Your final report should be comprehensive and include all data used to support your conclusion(s). Should the data indicate copper and/or zinc as the source of effluent toxicity or if Environmental Sciences Section 1621 Mail Service Center, Raleigh, North Carolina 27699-1621 Location: 4401 Reedy Creek Road, Raleigh, North Carolina 27607 Phone: 919-743-84001 FAX: 919-743-85171 Customer Service: 1-877-623-6748 Internet: http://h2o.enr.state.nc.uslesbl One NorthCarolina Naturally An Equal Opportunity 1 Affirmative Action Employer the data are inconclusive as to copper and/or zinc's role as a toxicity source, then the NPDES Permit will be reopened and the metal limits specified above will be applied to the permit. The report is due nine months after the date of the second WET Notice of Violation. Three copies of the final report shall be submitted to: North Carolina Division of Water Quality Environmental Sciences Section Aquatic Toxicology Unit 1621 Mail Service Center Raleigh, North Carolina 27699-1621 You should consider submitting the above correspondence certified mail. Failure to notify DWQ of your acceptance of a copper and/or zinc limit, failure to notify DWQ of your option selection or failure to make acceptable demonstration to DWQ that copper and/or zinc are not causative effluent toxicants within the stated time frames will result in reopening of the NPDES Permit to include copper and/or zinc numeric limitations, as appropriate. If the effluent is toxic, then we expect work to commence immediately with toxic effluent samples. Failure to initiate work with toxic effluent samples during the study period is unacceptable and will be considered a failure to make acceptable demonstration as cited above. We recommend a minimum of three separate sampling events during the nine month period to definitively rule out copper and/or zinc as causative effluent toxicants. Please note that your actions to notify DWQ of prospective limit acceptance or to notify DWQ of plan option(s) and subsequent submission of a plan are contingent upon two or more toxicity NPDES permit limit violations occurring during a toxicity testing calendar quarter. Also note that the WET limit will remain in your NPDES permit regardless of whether metals are the source of effluent toxicity. The data resulting from your actions to disprove copper and/or zinc as sources of effluent toxicity will determine whether NPDES Permit limits will be assigned for these parameters. You are responsible for initiating actions to address these issues. You may consider entering into a Special Order by Consent (SOC) with DWQ. A SOC provides regulatory relief for specific NPDES permit limit violations and, if signed, will contain a requirement to conduct a Toxicity Reduction Evaluation. The SOC will contain a compliance schedule, stipulated penalties for failing to meet milestone activity dates and may contain upfront penalties to settle past permit limit violations. Environmental Sciences Section 1621 Mail Service Center, Raleigh, North Carolina 27699-1621 Location: 4401 Reedy Creek Road, Raleigh, North Carolina 27607 Phone: 919-743-84001 FAX: 919-743-85171 Customer Service: 1-877-623-6748 Internet: http://h2o.enr.state.nc.us/esb/ One NorthCarolina Naturally An Equal Opportunity, Affirmative Action Employer Additional information regarding the Division's Copper and Zinc Action Level Policy can be found at the following web site - http://www.esb.enr.state.nc.us. Click on the "Aquatic Toxicology" Unit and go to the prompt "AT Downloadable Files" located at the bottom of the page. This web site also contains EPA's "Toxicity Reduction Evaluation Guidance for Municipal Wastewater Treatment Plants." Section 4 of this document contains pertinent information on Toxicity Identification Evaluations. If you have any questions concerning this correspondence, please contact Mr. John Giorgino at (919) 743-8441. Sincerely, c Cindy Moore Supervisor, Aquatic Toxicology Unit ATTACHMENTS cc: Steve Tedder- Winston-Salem Regional Office (no attachments) Jenifer Carter- Winston-Salem Regional Office (no attachments) Karen Rust- Point Source Branch (no attachments) Marshall Hyatt-USEPA Region IV, Atlanta Federal Center, 61 Forsyth St., SW, Atlanta, GA 30303 (no attachments) Central Files (no attachments) Aquatic Toxicology Unit Files (no attachments) Environmental Sciences Section 1621 Mail Service Center, Raleigh, North Carolina 27699-1621 Location: 4401 Reedy Creek Road, Raleigh, North Carolina 27607 Phone: 919-743-84001 FAX: 919-743-85171 Customer Service: 1-877-623-6748 Internet: http://h2o.enr.state.nc.us/esb/ One NorthCarolina Naturally An Equal Opportunity 1 Affirmative Action Employer �� NCDENR North Carolina Department of Environment and Naj ra! esol_ ices Beverly Eaves Perdue Governor Division of v`later Q!aiit`! Coleen H. Sullins Director December 17, 2009 F.E. Isenhour, Jr., Town Manager Town of Denton P.O. Box 306 Denton, NC 27239-0306 SUBJECT: Compliance Evaluation Inspection Town of Denton WWTP NPDES Permit #NC0026689 Davidson County Dear Mr. Isenhour: Dee Freeman Secretary A compliance Evaluation Inspection was performed at the Town of Denton's WWTP on November 19, 2009 by Jenifer Carter of the Winston-Salem Regional Office. Mr. Troy Branch, Operator in Responsible Charge (ORC), was present for the inspection. This type of inspection consists of two basic parts: an in office review of facility files and self -monitoring data, and an on -site inspection of the facility. A review of self -monitoring data for the period of January 2008 through September 2009 revealed numerous BOD, Ammonia and Fecal Coliform Limits violations. All have been, or are being addressed through the Division's regular monthly enforcement program. Limited sludge storage capacity appears to be a major cause for the violations, as well as seasonal variations. Since the higher winter limits have come into effect for the year, violations have decreased. This does not mean, however, that the cause(s) of the violations have disappeared. During a meeting with you after the inspection, you promised to submit an outline of plans for improvements, including funding efforts, which would address the ongoing violations. Please submit a detailed summary of where the City's efforts stand by January 31, 2010. Problems noted during the inspection included a leaking weir gasket in clarifier #3, and a malfunctioning helisieve. Mr. Branch had already made arrangements for repairs/adjustments to these systems. During the inspection, a coarse bar screen was being used, and plans were in place to install a fine screen the following week to better protect downstream equipment. A new heater was in hand to replace a failing heater for the generator, though it had not been installed yet. This may be why the generator could not be started during the inspection. Mr. Branch explained that evidence of overflow at the splitter box between the oxidation ditch and secondary clarifiers was a result of years worth of solids build-up plugging the pipes. Upon discovery Nerth Caroiina Division of ` ater Quality, Vlirstor,-Salem Regiona ;office One Location:585 Waughtown St. Winston-Salem, North Carolina 27107 NOl'C11Ca1Ohria Phone. 336-771-50001 FAX: 336-771-46301 Customer Service: 1-87 7-623 c'48 1 Internet www.ncwaterquality org ",Equal CGUOru;,..tly`A.5n-aJre-OU11% recently, each side was purged of the slugs that had formed, and it was during this effort that some of the wastewater was lost. It is the first such occurrence of such blockage that Mr. Branch was aware of. Mr. Branch maintains all records in excellent order and operates the plant in as efficient a manner as may be possible. Should you have any questions please contact Ms. Jenifer Carter in our Winston-Salem Regional Office at (336) 771-4957. ,Smcjely,_ v A -- Steve W. Tedder Surface Water Regional Supervisor Winston-Salem Regional Office Division of Water Quality cc: Troy Branch, ORC SWP-Central Files United States Environmental Protection Agency Form Approved. EPA Washington, D.C. 20460 OMB No. 2040-0057 Water Compliance Inspection Report Approval expires 8-31-98 Section A: National Data System Coding (i.e., PCS) Transaction Code NPDES yr/mo/day Inspection Type Inspector Fac Type 1 I NI 2 15I 11 NCO026689 111 121 09/11/19 117 18I cI 191 SI 20I 1 I Remarks 2,IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII6 Inspection Work Days Facility Self -Monitoring Evaluation Rating 81 QA —------------------------- Reserved ---------------------- 67 I 169 70131 71 I N I 72 I N I 73 W 74 751 I I I I I I 180 t-1 Section B: Facility Data Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include Entry Time/Date Permit Effective Date POTW name and NPDES permit Number) 10:00 AM 09/11/19 09/11/01 Denton WWTP Exit Time/Date Permit Expiration Date NCSR 2569 Denton NC 27239 12:00 PM 09/11/19 14/01/31 Name(s) of Onsite Representative(s)Mtles(s)/Phone and Fax Number(s) Other Facility Data Troy B Branch//336-859-4460 /3368593381 Name, Address of Responsible Official/Title/Phone and Fax Number F E Isenhour,PO Box 306 Denton NC 272390306/Town Contacted Manager/336-859-5885/3368593381 Yes Section C: Areas Evaluated During Inspection (Check only those areas evaluated) Permit 0 Flow Measurement Operations & Maintenance Records/Reports Self -Monitoring Program E Sludge Handling Disposal Facility Site Review Effluent/Receiving Waters Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) (See attachment summary) Name(s) and Signature(s) of Inspector(s) Agency/Office/Phone and Fax Numbers Date Jenifer Carter WSRO WQ//336-771-5000/ f � i Signature of agey nt Q A Review Agency/Office/Phone and Fax Numbers Date EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page # 1 NPDES yr/mo/day Inspection Type 3i NCO026689 Ill 12I 09/11/19 I17 18ICI (cont.) 1 Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) The heliesieve was out of order during the inspection. So far, replacement parts have not been able to be located. Short-term plans are to install a fine bar screen to better protect downstream equipment than the course sreen currently being used. The back-up generator was not able to be started during the inspection. Mr. Branch thought this was due to a malfunctioning heater, for which parts had already been ordered and received. Plans were in place already to make the necessary repairs. Evidence of spillover from the splitter box between the oxidation ditches and secondary clarifiers was apparently due to recent work to clear the pipes of blockage from years of build-up in the lines. During visit, there was a pile of dried sludge next to the beds in preparation for being picked up for land app. Mr. Branch said there was usually silt fencing around the piles, but that it had been removed to enable access by the trucks. The silt fencing or some type of berm needs to be placed around the piles to prevent stormwater from washing sludge off site, especially if rain is in the forecast. This needs to be addressed in the Stormwater Pollution Prevention Plan for the new stormwater permit recently obtained by the WWTP. Limited sludge storage capacity appears to be a major cause for frequent and ongoing permit limits violations, as well as seasonal variations. Since the higher winter limits have come into effect for the year, violations have decreased. This does not mean, however, that the cause(s) of the violations have disappeared. During a meeting after the site inspection, Mr. Isenhour promised to submit an outline of plans for improvements, including funding efforts, which would address the ongoing violations. A detailed summary of where the City's efforts stand must be submitted by January 31, 2010 Page # 2 Permit: NCO026689 Inspection Date: 11/19/2009 Owner - Facility: Denton VVWTP Inspection Type: Compliance Evaluation (if the present permit expires in 6 months or less). Has the permittee submitted a new application? 0 D ■ Is the facility as described in the permit? ■ n n n # Are there any special conditions for the permit? n ■ n n Is access to the plant site restricted to the general public? ■ n n n Is the inspector granted access to all areas for inspection? ■ n n n Comment: Record Keeping Yes No NA NE Are records kept and maintained as required by the permit? ■ n n n Is all required information readily available, complete and current? ■ n n n Are all records maintained for 3 years (lab. reg. required 5 years)? ■ n n n Are analytical results consistent with data reported on DMRs? ■ n n n Is the chain -of -custody complete? ■ n n n Dates, times and location of sampling ■ Name of individual performing the sampling ■ Results of analysis and calibration ■ Dates of analysis ■ Name of person performing analyses ■ Transported CM ■ Are DMRs complete: do they include all permit parameters? ■ n n n Has the facility submitted its annual compliance report to users and DWQ? ■ n n n (If the facility is = or > 5 MGD permitted flow) Do they operate 24/7 with a certified operator on each shift? n n ■ n Is the ORC visitation log available and current? ■ n n n Is the ORC certified at grade equal to or higher than the facility classification? ■ n n n Is the backup operator certified at one grade less or greater than the facility classification? ■ ❑ O O Is a copy of the current NPDES permit available on site? ■ n n n Facility has copy of previous year's Annual Report on file for review? ■ n n n Comment: Influent Sampling Yes No NA NE # Is composite sampling flow proportional? nn■o Page # 3 It Permit: NCO026689 Inspection Date: 11/19/2009 Influent Sampling Is sample collected above side streams? Is proper volume collected? Is the tubing clean? Owner - Facility: Denton VWVTP Inspection Type: Compliance Evaluation # Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees Celsius)? Is sampling performed according to the permit? Comment: Flow -proportional sampling provided at the effluent Sampler is iced. A refrigerated device is recommended as can be difficult to keep the sampler iced during hot weather. Effluent Sampling Is composite sampling flow proportional? Is sample collected below all treatment units? Is proper volume collected? Is the tubing clean? # Is proper temperature set for sample storage (kept at less than or equal to 6 0 degrees Celsius)? Is the facility sampling performed as required by the permit (frequency, sampling type representative)? Comment: A thermometer has been placed in the refrigerated sampler to enable verification of the temperature. Flow Measurement - Effluent # Is flow meter used for reporting? Is flow meter calibrated annually? Is the flow meter operational? (If units are separated) Does the chart recorder match the flow meter? Comment: Calibration of the flow meter last checked on April 1, 2009. No adjustment was needed. Operations & Maintenance Yes No NA NE Is the plant generally clean with acceptable housekeeping? ■ ❑ ❑ ❑ Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable Solids, pH, DO, Sludge ■ fl ❑ ❑ Judge, and other that are applicable? Comment: Standby Power Yes No NA NE Is automatically activated standby power available? ■ ❑ ❑ ❑ Page # 4 I Permit: NC0026689 Inspection Date: 11/19/2009 Standby Power Is the generator tested by interrupting primary power source? Is the generator tested under load? Was generator tested & operational during the inspection? Owner- Facility: Denton VwVfP Inspection Type: Compliance Evaluation Do the generator(s) have adequate capacity to operate the entire wastewater site? Is there an emergency agreement with a fuel vendor for extended run on back-up power? Is the generator fuel level monitored? Comment: Generator is run automatically every month. It can power the entire plant for one day if sludge tanks are not aerated. The generator would not start during the inspection. The heater was not working... parts had been ordered and were on hand to to be installed. Pump Station - Influent Is the pump wet well free of bypass lines or structures? Is the wet well free of excessive grease? Are all pumps present? Are all pumps operable? Are float controls operable? Is SCADA telemetry available and operational? Is audible and visual alarm available and operational? Comment: There are 4 pumps, alternating each as lead pump. The bubbler senses 5 water levels, 6 including high water alarm. -- c------ Type of bar screen a.Manual b. Mechanical Are the bars adequately screening debris? Is the screen free of excessive debris? Is disposal of screening in compliance? Is the unit in good condition? Comment: The Heliesieve is out of order, with a course bar screen being used as back-up. Thtere are plans to add a fine screen to further protect downstream equipment. Replacement parts for the heliesieve are not able to be located, so it remains to be seen if it will/ can be put back into use. ■ ❑ ❑ ❑ ■ n n n ■nnn ■nnn ■nnn ■nnn Yes No NA NE ■nnn ■ n n n ■ n n n ■nnn nn■o n■nn ■nnn ■ ■ n■nn ■ n n n ■ n n n ■ n n n Page # 5 Permit: NCO026689 Owner -Facility: Denton VWVTP Inspection Date: 11/19/2009 Inspection Type: Compliance Evaluation Oxidation Ditches Yes No NA NE Are the aerators operational? ■ n D n Are the aerators free of excessive solids build up? ■ n n n # Is the foam the proper color for the treatment process? ■ n n n Does the foam cover less than 25% of the basin's surface? ■ n n n Is the DO level acceptable? ■ n n n Are settleometer results acceptable (> 30 minutes)? ■ n n n Is the DO level acceptable?(1.0 to 3 0 mg/1) ■ n n n Are settelometer results acceptable?(400 to 800 ml/I in 30 minutes) ■ n n n Comment: Settleometer results were —450 ml/I during the inspection. Mr. Branch says the MLSS has been running--4000-4200 and DO has been —1.1 mg/L. Secondary Clarifier Yes No NA NE Is the clarifier free of black and odorous wastewater? ■ n n n Is the site free of excessive buildup of solids in center well of circular clarifier? ■ n n n Are weirs level? ■ n ❑ n Is the site free of weir blockage? ■ n n n Is the site free of evidence of short-circuiting? ■ n n n Is scum removal adequate? ■ n n n Is the site free of excessive floating sludge? ■ n n n Is the drive unit operational? ■ n n n Is the return rate acceptable (low turbulence)? ■ n n n Is the overflow clear of excessive solids/pin floc? ■ n n n Is the sludge blanket level acceptable? (Approximately % of the sidewall depth) ■ n n n Comment: 3 of 4 clarifiers in use. Mr. Branch pointed out that Weir #3 had some minor flow under weir due to leaking gasket. Repairs are being planned. Yes No NA NE Is containment adequate? ■ n n n Is storage adequate? ■ n n n Are backup pumps available? n n n ■ Is the site free of excessive leaking? ■ n n n Comment Page # 6 Permit: NC0026689 Inspection Date: 11/19/2009 Owner - Facility: Denton VWVfP Inspection Type: Compliance Evaluation Filtration (High Rate Tertiary) res No NA Nt Type of operation: Down flow Is the filter media present? ■ n n n Is the filter surface free of clogging? ■ n n n Is the filter free of growth? ■ n In In Is the air scour operational? ■ n n n Is the scouring acceptable? ■ n n n Is the clear well free of excessive solids and filter media? ■ n n n Comment: Disinfection -Gas Yes No NA NE Are cylinders secured adequately? ■ n n n Are cylinders protected from direct sunlight? ■ n n n Is there adequate reserve supply of disinfectant? ■ n n n Is the level of chlorine residual acceptable? ■ n n n Is the contact chamber free of growth, or sludge buildup? ■ n n n Is there chlorine residual prior to de -chlorination? ■ n n n Does the Stationary Source have more than 2500 Ibs of Chlorine (CAS No. 7782-50-5)? n n n ■ If yes, then is there a Risk Management Plan on site? n n n ■ If yes, then what is the EPA twelve digit ID Number? (1000- - ) If yes, then when was the RMP last updated? Comment: _ ... V. AI.. W A AIC Type of system ? Gas Is the feed ratio proportional to chlorine amount (1 to 1)? n n ■ n Is storage appropriate for cylinders? ■ n n In # Is de -chlorination substance stored away from chlorine containers? ■ n n n Comment: Are the tablets the proper size and type? n n ■ o Are tablet de -chlorinators operational? ❑ n ■ Number of tubes in use? Page # 7 Permit: NC0026689 Owner -Facility: Denton WWrP Inspection Date: 11/19/2009 Inspection Type: Compliance Evaluation De -chlorination Yes No NA NE Comment: Aerobic Digester Yes No NA NE Is the capacity adequate? ■ n n n Is the mixing adequate? ■ n n n Is the site free of excessive foaming in the tank? ■ n fl n # Is the odor acceptable? ■ n n n # Is tankage available for properly waste sludge? ■ n n n Comment: Land application now occuring every 5-6 weeks. Drying Beds Yes No NA NE Is there adequate drying bed space? ■ n n n Is the sludge distribution on drying beds appropriate? ■ n n n Are the drying beds free of vegetation? ■ n ❑ # Is the site free of dry sludge remaining in beds? ■ n n n Is the site free of stockpiled sludge? n ■ n n Is the filtrate from sludge drying beds returned to the front of the plant? ■ n n n # Is the sludge disposed of through county landfill? n ■ n n # Is the sludge land applied? ■ n n n (Vacuum filters) Is polymer mixing adequate? n n ■ n Comment: Beds are now used regularly for drying sludge prior to land app. During visit, there was a pile of dried sludge next to the beds in preparation for being picked up for land app. Mr. Branch said there was usually silt fencing around the piles, but that it had been removed to enable access by the trucks. The silt fencing or some type of berm needs to be placed around the piles to prevent stormwater from washing sludge off site. This needs to be addressed in the Stormwater Pollution Prevention Plan for the new stormwater permit recently obtained for the WVVfP. Effluent Pipe Yes No NA NE Is right of way to the outfall properly maintained? ■ 0 n 0 Are the receiving water free of foam other than trace amounts and other debris? D 0 ❑ ■ If effluent (diffuser pipes are required) are they operating properly? ❑ n ■ n Comment: Effluent leaving the pipe was clear and free of foam/ debris. Page # 8 NCDENR North Carolina Department of Environment and Natural Resources Division of Water Quality Beverly Eaves Perdue Coleen H. Sullins Dee Freeman Governor Director Secretary July 21, 2009 Mr. F. E. Isenhour, Jr., Town Manager Town of Denton P.O. Box 306 Denton, NC 27239-0306 Subject: NOTICE OF VIOLATION NOV-2009-LV-0324 Permit No. NCO026689 Denton WWTP Davidson County Dear Mr. Isenhour: A review of Denton WWTP's monitoring report for April 2009 showed the following violations: Parameter Date Limit Value Reported Value Limit Type Coliform, Fecal MF, M-FC 04/11/09 400 #/100ml 446.14 4/100ml Weekly Geometric Mean Broth,44.5C Exceeded BOD, 5-Day (20 Deg. C) - 04/30/09 5 mg/1 6.22 mg/1 Monthly Average Concentration Exceeded Nitrogen, Ammonia Total 04/30/09 2 mg/1 2.29 mg/1 Monthly Average (as N) - Concentration Exceeded Remedial actions, if not already implemented, should be taken to correct the above noncompliance problem. Please be aware that violations of your NPDES permit could result in enforcement action for this by the Division of Water Quality for this and any additional violations of State law. If you should have any questions, please do not hesitate to contact Jenifer Carter at (336) 771- 4957. Sincerely, �Jv Steve W. Tedder Surface Water Regional Supervisor Winston-Salem Regional Office cc: SWP — Central Files Division of Water Quality WSRO Files North Carolina Division of Water Quality, Winston-Salem Regional Office One Location: 585 Waughtown St, Winston-Salem, North Carolina 27107 NorthCarolina Phone: 336-771-50001 FAX: 336-771-46301 Customer Service: 1-877-623-6748 n/ Internet: www,ncwaterquality.org vv �'atmally An Equal Opportunity \ Affirmative Ac5on Employer �/ Z4,L,)r RUM North Carolina Department of Environment and Natural Resources Beverly Eaves Perdue Governor Division of Water Quality Coleen H. Sullins Director June 26, 2009 Mr. F. E. Isenhour, Jr., Town Manager Town of Denton P.O. Box 306 Denton, NC 27239-0306 Subject: NOTICE OF VIOLATION NOV-2009-LV-0274 Permit No. NCO026689 Denton WWTP Davidson County Dear Mr Isenhour: Dee Freeman Secretary A review of Denton WWTP's monitoring report for March 2009 showed the following violations: Parameter Date Limit Value Reported Value Limit Type Coliform, Fecal MF, M-FC Broth,44.5C 03/28/09 400 #/100ml 600 #/100ml Weekly Geometric Mean Exceeded Remedial actions, if not already implemented, should be taken to correct the above noncompliance problem. Please be aware that violations of your NPDES permit could result in enforcement action for this by the Division of Water Quality for this and any additional violations of State law. If you should have any questions, please do not hesitate to contact Jenifer Carter at (336) 771- 4957. cc: SWP — Central Files WSRO Files North Carolina Division of Water Quality, Winston-Salem Regional Office Location: 585 Waughtown St. Winston-Salem, North Carolina 27107 Phone: 336-771-50001 FAX: 336-771-46301 Customer Service:1-877-623-6748 Internet: www.ncwaterquality.org Sincerely, 0 4 Steve W. Tedder Surface Water Regional Supervisor Winston-Salem Regional Office Division of Water Quality Nne orthCarolina Naturally An Equal Opportunity `1 Affirmative Action Employer Beverly Eaves Perdue Governor I/C RECEIVED eot. of ENR JUN 0 I Y..� 4 20M NCDE I�R Winston-Salem North Carolina Department of Environment and Natural Resources R�tonat off °e Division of Water Quality Coleen H. Sullins Dee Freeman 5455 Mr. Troy B. Branch Town of Denton WWTP PO Box 306 Denton, NC 27239- Director May 13, 2009 Secretary Subject: North Carolina Wastewater/Groundwater Laboratory Certification (NC WW/GW LC) Maintenance Inspection Dear Mr. Branch : Enclosed is a report for the inspection performed on April 21, 2009 by Mr. Ramon Cook. Where finding(s) are cited in this report, a response is required. Within thirty days of receipt, please supply this office with a written item for item description of how these finding(s) were corrected. If the finding(s) cited in the enclosed report are not corrected, enforcement actions may be recommended. For certification maintenance, your laboratory must continue to carry out the requirements set forth in 15A NCAC 2H .0800. Copies of the checklists completed during the inspection may be requested from this office. Thank you for your cooperation during the inspection. If you wish to obtain an electronic copy of this report by email or if you have questions or need additional information, please contact us at 919-733-3908. Enclosure cc: Ramon Cook Winston-Salem Regional Office Sincerely, Dana Satterwhite Certification Unit Supervisor Laboratory Section DENR DWQ Laboratory Section NC Wastewater/Groundwater Laboratory Certification Branch 1623 Mail Service Center, Raleigh, North Carolina 27699-1623 Location: 4405 Reedy Creek Road. Raleigh, North Carolina 27607-6445 Phone: 919-733-39081 FAX: 919-733-6241 Internet: www.dwglab.org NorthCarolina Naturally An Equal opportunity 1 Affirmative Action Employer Customer Service: 1-877-623-6748 www.ncwaterquality.org LABORATORY NAME: NPDES #: ADDRESS: CERTIFICATE #: DATE OF INSPECTION: TYPE OF INSPECTION: AUDITOR(S): LOCAL PERSON(S) CONTACTED: INTRODUCTION: On -Site Inspection Report Town of Denton VWVTP NCO026689 P.O. Box 306 Denton, NC 27239 5455 April 21, 2009 Field Maintenance Ramon L. Cook Troy Branch This laboratory was inspected to verify its compliance with the requirements of 15A NCAC 2H .0800 for the analysis of environmental samples. II. GENERAL COMMENTS: The laboratory is spacious and well equipped. All facilities and instrumentation are well maintained. The laboratory was given copies of the Technical Assistance Documents for all field parameters during the inspection. III. FINDINGS, REQUIREMENTS, COMMENTS AND RECOMMENDATIONS: Dissolved Oxygen — Standard Methods, 18t' Edition, 4500 O G A. Finding: The laboratory is not documenting each time the meter is being calibrated. Requirement: The laboratory must document each time that a calibration is performed. Depending upon the instrument used and type of calibration performed, calibration documentation may be accomplished by recording elevation and temperature or barometric pressure (in psi) or salinity or by simply recording a final reading (in mg/L) for instruments that auto calibrate. Ref: Technical Assistance for Field Analysis of Dissolved Oxygen. Page 2 # 5455 Town of Denton WVVfP Requirement: A record of instrument calibration where applicable, must be filed in an orderly manner so as to be readily available for inspection upon request. Ref: 15A NCAC 2H .0805 (g) (2). pH — Standard Methods, 18th Edition, 4500 H+ B Temperature — Standard Methods, 18th Edition, 2550 B Dissolved Oxygen — Standard Methods, 18th Edition, 4500 O G Residual Chlorine — Standard Methods 18th Edition, 4500 Cl G Conductivity_— Standard Methods, 18th Edition, 2510 B B. Finding: Data on the benchsheets contained corrections either with scratch outs, write overs, or the use of Wite-Out®. Requirement: All documentation errors must be corrected by drawing a single line through the error so that the original entry remains legible. Entries shall not be obliterated by erasures or markings. Wite-Out®, correction tape or similar products designed to obliterate documentation are not to be used. Write the correction adjacent to the error. The correction must be initialed by the responsible individual and the date of change documented. All data and log entries must be written in indelible ink. Pencil entries are not acceptable. Ref: North Carolina Wastewater/Groundwater Laboratory Certification (NC WW/GW LC) Policy. Total Residual Chlorine — Standard Methods, 18th Edition, 4500 Cl G Comment: The laboratory had been analyzing samples on a Hach 2400 meter. They have recently purchased a new meter (i.e., Hach DR 2700) and has not verified the internal curve. Finding: An annual verification curve has not been analyzed on the new meter. Requirement: Most field photometric instruments have factory -set (i.e., stored) calibration programs, which when selected in combination with the optimum wavelength for a particular analysis, give a direct readout in concentration. These stored calibration programs are acceptable for quantitation, but due to possible analyst error, variation in sample or standard preparation, variation in reagents or malfunction of the instrument, the stored calibration must be verified with a laboratory -generated calibration at least every 12 months. Analyze a water blank to zero the instrument and then analyze a series of five standards. The curve verification must check 5 concentrations (not counting the blank) that bracket the range of the samples to be analyzed. (Other certified laboratories may provide assistance in meeting this requirement.) Ref: Technical Assistance for Field Analysis of Total Residual Chlorine. Please send a copy of the curve verification to our office with the inspection report reply. Recommendation: A curve was analyzed on the Hach 2400 on 4/6/2009. It is recommended that the laboratory use the Hach 2400 until a curve is analyzed on the DR 2700 meter. D. Finding: A gel standard is analyzed each analysis day; however, the true value of the gel standard has not been established. Requirement: Establish the true value of the gel standard by reading the gel standard on a meter that has just had the internal curve verified. Assign that reading as the true Page 3 # 5455 Town of Denton WWTP value of the gel standard. Document this procedure. This procedure must be performed annually (every 12 months) to verify gel standards that have exceeded the documented expiration date. Each gel standard must be verified specifically to each meter. Ref: Technical Assistance for Field Analysis of Total Residual Chlorine. Please submit a copy of the gel standard verification against the curve with the inspection report reply. Conductivity_— Standard Methods, 18th Edition, 2510 B E. Finding: The laboratory is not analyzing a calibration verification check standard each analysis day. Requirement: Analyze and document a calibration verification check standard. It is recommended that this standard be at a lower range. The value obtained from the calibration check standard must read within 10% of the true value of the check standard. If the obtained value is outside of the ±10% range, corrective action must be taken. Ref: Technical Assistance for Field Analysis of Conductivity. Comment: The instrument is calibrated on a 1000 µmhos/cm standard each analysis day. IV. PAPER TRAIL INVESTIGATION: The paper trail consisted of comparing field testing records to Discharge Monitoring Reports (DMRs) submitted to the North Carolina Division of Water Quality. Data was reviewed for (NPDES # NC0026689) for November, December, 2008 and January 2009. No transcription errors were detected. The facility appears to be doing a good job of accurately transcribing data. V. CONCLUSIONS: Correcting the above -cited findings and implementing the recommendation will help this lab to produce quality data and meet certification requirements. The inspector would like to thank the staff for its assistance during the inspection and data review process. Please respond to all findings. Report prepared by: Ramon L. Cook Date: April 27, 2009 Report reviewed by: Tonja Springer Date: May 8, 2009 cc: Permits and Engineering Technical Support Branch County Health Dept. Central Files WSRO SOC PRIORITY PROJECT: Yes X No If Yes, SOC No. 96-23 To: Permits and Engineering Unit Water Quality Section Attention: Mary Cabe Date: October 7, 1997 NPDES STAFF REPORT AND RECOMMENDATION County Davidson Permit No. NCO026689 PART I - GENERAL INFORMATION 1. Facility and Address: Mr. John Everhart, Town Manager Town of Denton P. O. Box 306 Denton, N.C. 27239 2. Date of Investigation: September 3, 1997 3. Report Prepared by: Abner Braddy 4. Persons Contacted and Telephone Number: John Everhart, Town Manager (910) 859-4231 Dan Pritchett, P.E.; Jamestown Engineering (910) 886-5523 5. Directions to Site: From Winston-Salem, travel N.C. Hwy. 109 South to Denton; turn right at the stop light onto Peacock Street (S.R. 2511); travel 0.8 mile to High Rock Street (S.R. 1002) and turn left; travel 0.1 mile and turn left onto S.R. 2569 after crossing the railroad tracks; go past the furniture plant on the left, pass through the gate at the entrance to the dirt road, and follow the dirt road to the WWTP at the end. 6. Discharge Points(s), List for all discharge points: Latitude: 350 37' 22" Longitude: 800 09' 22" The Town's engineers are considering a request for the discharge at an alternate site on Lick Creek. During the September 3 on -site evaluation, each of the locations was visited. Although the location being investigated for purposes of this application is only approximately 1000' downstream of the alternate site, what appears to be a relatively significantly -sized tributary enters Lick Creek between the two locations. That unnamed tributary is the one into which the Denton WWTP presently discharges. The reason given for the applicant considering the alternate site is the fact that there does not appear to be sufficient working right-of-way between the unnamed tributary to Lick and S.R. 2504 at a point about 400' upstream of the proposed discharge point. Due to the right-of-way constrictions, the engineer stated that at least one, and possibly two additional creek crossings will be necessary to reach the proposed discharge point. The latitude and longitude of the alternate site are: Latitude: 350 371 27" Longitude: 800 09 17" See attached letter. lb U.S.G.S. Quad No. E18SW U.S.G.S. Quad Name High Rock NC 7. Site size and expansion area consistent with application? X Yes No If No, explain: There is sufficient room for the proposed expansion. 8. Topography (relationship to flood plain included): the site is level, and is above the flood plain. 9. Location of nearest dwelling: None within 1000.01. 10. Receiving stream or affected surface waters: Lick Creek a. Classification: WS-IV b. River Basin and Subbasin No.: Yadkin 03-07-08 C. Describe receiving stream features and pertinent downstream uses: Lick Creek is a rural watercourse, with agricultural uses, Its "WS" classification stems from the fact that it flows into Tuckertown Reservoir. Part II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS 1. a. Volume of Wastewater to be permitted: 0.8 MGD (Ultimate Design Capacity) b. What is the current permitted capacity of the Waste Water Treatment facility? 0.3 MGD C. Actual treatment capacity of the current facility (current design capacity)? 0.3 MGD d. Date(s) and construction activities allowed by previous Authorizations to Construct issued in the previous two years. None. e. Please provide a description of existing or substantially constructed wastewater treatment facilities; Bar screen, comminutor, grit settling NPDES Permit Staff Report Version 10/92 Page 2 basin, wetwell (4 pumps),e258,500 gallon oxidation ditch with 2 aerators, twin 25.0' diameter clarifiers, chlorine contact chamber with gas chlorination, followed by cascade aeration. Solids are handled in an aerated sludge holding tank (45,100 gallons), and there are also six 920 square foot sludge drying -beds, though they are not currently in use. f. Please provide a description of proposed wastewater treatment facilities. The wetwell pumps will be modified, an additional 400,000 gallon oxidation ditch will be constructed. Discharge from the new oxidation channel will be split to evenly distribute flow between the existing 25' clarifiers and a new 30' clarifier. A new 35' clarifier will receive the flow from the existing oxidation channel. The chlorine contact chamber is to be tripled in size. From the chlorine contact chamber, effluent will go to dual tertiary filters, followed by sulfur oxide injection for de - chlorination. Three additional sludge drying beds will be constructed. The effluent outfall will be relocated from an unnamed tributary to Lick Creek proper via 10,500 linear feet of 15" gravity sewer line. A generator for stand-by power is also being provided. g. Possible toxic impacts to surface waters: None known. h. Pretreatment Program (POTWs only): in development approved X should be required not needed 2. Residuals handling and utilization/disposal scheme: At present, the Town's sludge is trucked to the City of Lexington's compost facility (WQ0001318) where it is used in that program. a. If residuals are being land applied, please specify DEM Permit No. Residuals Contractor Telephone No. b. Residuals stabilization: PSRP PFRP Other C. Landfill: d. Other disposal/utilization scheme (Specify): The Town's approved 201 Facilities Plan calls for the permitting of agricultural land, and the establishment of a land application program. NPDES Permit Staff Report Version 10/92 Page 3 3. Treatment plant classification A attach completed rating sheet). 3 4. SIC Code(s): 4952 Primary 01 Secondary Main Treatment Unit Code: 1 0 1 5 PART III - OTHER PERTINENT INFORMATION 1. Is this facility being constructed with Construction Grant Funds or are any public monies involved. (municipals only)? The project is being funded in part by State Revolving Loan Fund monies. 2. Special monitoring or limitations (including toxicity) requests: None. 3. Important SOC, JOC or Compliance Schedule dates: (Please indicate) *Draft SOC is in Central Office. Date Submission of Plans and Specifications November 1, 1997 Begin Construction July 1, 1998 Complete Construction July 1, 1999 4. Alternative Analysis Evaluation: Has the facility evaluated all of the non -discharge options available. Please provide regional perspective for each .option evaluated. Spray Irrigation: Ruled out during the 201 evaluation as cost prohibitive. Connection to Regional Sewer System: N.A. Subsurface: N.A. Other disposal options: 5. Other Special Items: PART IV - EVALUATION AND RECOMMENDATIONS The Town has routinely exceeded their flow limit for the last 2 years due to excessive infiltration and inflow. They have undertaken a program to rehabilitate various sections of the sewerage system, as required under the approved 201 Facilities Plan. Those areas identified as being most in need of repair or NPDES Permit Staff Report Version 10/92 Page 4 replacement are to be rehabilitated by July 1, 1998, under the proposed S.O.C. The addition of the new treatment components should produce a higher quality effluent, and the relocation of the outfall to the main stem of Lick Creek will improve the water quality in the U.T. where the WWTP presently discharges. The Region recommends the permit be issued with 2 sets of effluent pages, one at 0.30 MGD and one at 0.80 MGD. /7 Signature'of report arer Water Quality Regional upervisor /0 -164 --,7 7 Date NPDES Permit Staff Report Version 10/92 Page 5 He Lick / S Pon �\ 3 ;� LA -600 a. J _ /r F �r Ga bti 3 _ r C� L JJ �n; llt 3 .M U � 7�r�; 1) -00—F , 319&- AI 1\1 LVW,►LIN")" L-t-, I' I/At' I\i R. VJ \1 )V f V(- 71, _Z1.1 ' � `' �t. ' , # � ` �� � • ' , ;�• l a ,�°n ��.. C_� 6$0 ., � l .� 'l-J .�aM � _, ; r I fc 0 J�, '..f O !-_. I/'•= i'„ f�lrr `% so �/ -01 � � I ,� / ' r ,� ey°/• \J� 1. ,. _ ,7 � I• ''•' - 1 II • r.� �.I �r•: `, j I . ' , . • I`l�• Z/ 640" {{—r �- -i / I I 1r` .;V�. i� ( '� .� f �� 'Tralle _�:� : i' I_I .Park I+ `.�'\-j�'r� i -631 ii 2351 / f �((, It, PC .. �...la. VIP _n;.9-'•—::�:.��,.I-=''. (f,. I . -- /- I ,I �_ l_ ���� lid \ ,. ,,/, � 1 :�,: .r � = =r.-,- ' � � 7- W1 AI 214 4 F.. yj 04 41 ASO to 69 41) 251 1 6W di M!" .150 it 100 ..7 WA12 hl a I 1AL)PAt, 1( it_. MM RATING SCALE FOR CLASSIFICATION OF WATER POLLUTION CONTROL SYSTEMS Name of Facility: � j�141-17,11 i� Owner or Contact Person: 5z�� Mailing Address: County: Telephone: 2 05'% Present Classification: New Facility Existing Facility NPDES Per. N9. NC00 ondisc. Per. No.WO Health Dept.Fer No. Rated by:Z�' Telephone: /D %- ���ate: Reviewed b Y Health Dept. Telephone: Regional Office Telephone: /— Central Office Telephone: ORC: Grade: _ Telephone Check Classification(s): Subsurface Spr rrigation Land Application Wastewater Classification: (Circle One) I If II IV Total Points- IN-Ft_ANT P S S ND RELATED COrfTf1CX EQl IIPMEM WHICf 1 ARE /lUti oet ae ar r� ins �c r -- A ------ E OECLASSIFICATION, SO P TAM( SY!3JEM5 CONSISTILr, MYOF SFPT)C TANK AND CRAVfTY NrMIF ATION LINES AC AS.S R eT4 SUBSURFACE CLASSIFICATKCI (check all units that apply) 1. septic tanks 2. pump tanks 3. siphon or pump -dosing systems 4. sand filters 5. grease trap/interceptor 6. oil/water separators 7. gravity subsurface treatment and disposal: 8. pressure subsurface treatment and disposal: SPRAY IRRIGATION CLASSIFICATION (check all units that apply) . 1. preliminary treatment (definition no. 32 ) 2. lagoons 3. septic tanks 4. pump tanks 5. pumps 6. sand filters 7, grease trap/interceptor S. oil/water separators 9. disinfection 10. chemical addition for nutrient/algae control 11. spray irrigation of wastewater In *addition to the above classifications, pretreatment of wastewater In excess of these components shell be rated using the point rating system and will require an operator with an appropriate dual certification. LAND APPLICATION/RESIDUALS CLASSIFICATION (Applies only to permit holder) 1. Land application of biosolids, residuals or contaminated soils on a designated site. ----------------------------------------- WASTEWATER TREATMENT FACILITY CLASSIFICATION The following systems shall be assigned a Class I classification, unless the flow is of a significant quantity or the technology is unusually complex, to require consideration by the Commission on a case -by -case basis: (Check if Appropriate) 1. Oil/wafer Separator Systems consisting only of physical separation, pumps and disposal; 2• Septic Tank/Sand Fitter Systems consisting only of septic tanks, dosing apparatus, pumps,sand fitters, disinfection and direct discharge; 3. Lagoon Systems consisting only of preliminary treatment, lagoons, pumps, disinfection, necessary chemical treatment for algae or nutrient control, and direct discharge; 4. Closed -loop Recycle Systems; 5. Groundwater Remediation Systems consisting only of cil/water separators, pumps, air -stripping, carbon adsorption, disinfection and disposal; 6. Aquaculture operations with discharge to surface waters; 7. Water Plant sludge handling and back -wash water treatment; 8. Seafood processing consisting of screening and disposal. 9• Single-family discharging systems, with the exception of Aerobic Treatment Units, will be classified if permitted after July 1, 1993 or if upon inspection by the Division, it is found that the system is not -being adequately operated or maintained. Such systems will be notified of the classification or reclassification by the Commission, in writing. ( ne to(iowing scale is used for rating wastewater treatment facilities: (circle appropriate points) (6) . ITEM POINTS (1) Industrial Pretreatment Units or Industrial Pretreatment Program (see definition No. 33)....................... �) 2) DESIGN FLOW OF PLANT IN gpd [rot applicable to non -contaminated cooing waters, sludge handing facilities for water purification plants, totally closed cycle systems(see definition No. 11). and facilities consisting only of hem ,(4)(d) or Items (4)(d) and (it)(d)) 0 - 20,000................................................................................................ 1 50,001 - 100.000..................................................................................................................................... 100.001 - 250,000...................................................................................................................................4 250.001 - 500,000.................................................................................................:................................ 500.001 - 1.000,000.................................................. .......................................... I...................... 1.000,001 - 2,000,000....................................................................... 001 (and up) iJIY for each 200.000 gpd capacity up to a maximum of .................30 Design Flow (gpd) (3) PRELIMINARY LINITS✓PROCESSES (see de nition No.32) (a) Bar Screens .....................................•--- 11 or...............................................f-1-i (b) Mechanical Screens, Static Screens or Comminuting Devices ......................... _............................ ................. ..2 (c) Grit Removal or............................................................................................... ..........................................._ (d) Mechanical or Aerated Grit Removal.............................................................:...............................................2 (e) Flow Measuring Device...........................................:....................................................................................1 or (f) Instrumented Flow Measurement ......:......................... (h)(g) Preaeration...............................................................................................................................................2 Influent Flow Equalization..........................................................................................................................2 - (i) Grease or Oil Separators - Gravity.................................................................................................................2 DMechanical................................................................................................................................................ .2 issolved Air Flotation...............................................................................................................................A ()) Prechlorination................................................................................................... (4) PRIMARY TREATMENT UVrrSIPROCESSES......................................5 (a) Septic Tank (see definition No. 43)............................................................................................................2 ((b) Imhoff Tank.....................................................................:.........................................................................2 c) Primary Clarhiers........................................................................................................................................5 (d) Settling ponds or Settling Tanks for Inorganic Non -toxic Materials (sludge handling facilities for water purification plants, sand, gravel, stone, and other mining operations except recreational activities such as gem orgold mining)........................................................................................................................................2 (5) SECONDARY TREATMENT U ITSIPROCESSES (a) Carbonaceous Stage (1) Aeration -High Purity Oxygen System...............................................................................20 DiffusedAir System...............................:.................................................................... I Mechanical Ali System (fixed, floating or rotor) ......................................... ...... Separate Sludge Reaeration............................................................................................3 (il) Trickling Flier HighRate.........................:................................................ 7 StandardRate...............................................................................................................5 Packed Tower................................................................................................................5 pil) Biological Aerated Filter or Aerated Biological Flier ................................. 10 (1v) Aerated Lagoons..........................................................................................................10 (v) Rotating Biological Contactors ......................................................................................10 (v1) Sand Filters -intermittent biological..................................................................................2 Recirculating biological (viii) ....................................................................................................3 (vii) Stabilization Lagoons..................................................................................................� Clarifier........................................................................................................................ (ix) Single stage system for combined carbonaceous removal of BOO and nitrogenous removal by nitrification (see definition No. 12)(Points for this hem have to be in addition to hems (5)(a)(i) through (5)(a)(viii), utilizing the extended aeration process (see definition No.3a)........................................ utilizing other than the extended aeration process ............................. .. ...................... ....... x) Nutrient additions to enhance BOO removal....................................................................5 (x1) Biological Culture ('Super Bugs')addhion....................................:...................................5 (b) Nitrogenous Stage (1) Aeration - High Purity Oxygen System ....... ..................................................................... 20 DiffusedAir System.......................................................................................................1 0 Mechanical Air System (fixed, floating or rotor)................................................................ 5 Separate Sludge Reaeration............................................................................................3 (11) Trickling Filter -High Rate...................................................................................................7 StandardRate...............................................................................................................5 PackedTower............................................................................................................... 5 (lit) Biological Aerated Filter or Aerated Biological Ffter................................:...........................1 0 (1v) Rotating Biological Contactors......................................................................................1 0 (v) Sand Fitter - Intermittent biological......................................................... ...................2 Recirculatingbiological....................................................................................................3 (v1) Clarifier..........................................................................................................................5 TERTIARY ORADVANCEDTREATMENTL 11-SPRDCESSES (a) Activated Carbon Beds without carbon carbon regeneration ......................... ........................... with carbon regeneration.................... ...................................... Powdered or Granular Activated Carbon Feed- ;0hout carbon regeneration.................................................. with carbon reaeneratton_--- �d) (e) (g) (h) .......................................5 .....................................1 5 ...............................................5 - - .........................................................................................1 5 Air atrfpptng...._...ess................................................................................................................................ Efe itrodialys Process .......:.......... ......... .....• ..................1 0 is Foam Separation 5 Foam Exchange .................................................................. Ion Exchange ...................................... 5 *def-.._........o.._..._....-••••_....._. ab,I-..._...... nit,-• ................ nit Application of Treated Effluent (sae definition No. 22b) (rot applicable for sand, gravel; stone and other similar mining operations) by high rate Infiltration ................._. 4 ..._........................_..._...... rcro scre ens ................................... . Phosphorous Removal by Biological Processes (See definition No. 26)........................................................20 Polishing Ponds - without aeration ............... _............................................................................................ with aeration.................................•-------------- (7) (8) (9) (10) HE .................................... diffused or mechanical........................................................ ......... u (m) Reverse Osmosis ...................................................................2 ...................................................................... (n) Sand or Mixed -Media Filters - low rate.......................................................................................................5 ................................................................. 5 .......................... high rate............................................5 (o) Treatment processes for removal of metal or cyanide ........................................ (p) treatment processes for removal of toxic materials other than metal or cyanide............................................ 5 SLUOGETREATMEM ................................... 15 (a) Sludge Digestion Tank - Heated (anaerobic)...............................................................................................10 Aerobic:..................................................................................... Unheated (anaerobic)............................................................................................................................. (b) Sludge Stabilization (chemical or thermal) .................. (c) Sludge Drying Beds - Gravity 5 y..............:............................................................ VacuumAssisted........................................................................................................5 .............................. Sludge Elutriatton............................................................... 5 (e) Siudge Thickener (gravity).......................Conditioner (chemical or thermal) ..........................:. Siudge ....................................................................... 5 (1) .................................................................. .........................5 (g) Dissolved Air Flotation Unit [not applicable to a unit rated ..... as (3)(i)}...........:..........; 8 ......................... h) Sludge Gas Utilization (including gas storage).............................................................................................2 (i) Sludge Holding Tank - Aerated...................................................................................................................5 Non -aerated ............................................................................................................................................. 2 ()) Sludge Incinerator (not Including activated carbon regeneration)........................................................... 10 (k) Vacuum Filter, Centrifuge, or Filter Press or other similar ciewatering devices...................................................i 0 RESIDUALS UTILIZATION/DISPOSAL including incinerated ash} (a) Lagoons..................................................................................................................................................2 (b) Land Application (surface and subsurface) (see definition 22a) by contracting to a land application operator or landfill operator who holds the land application permit or landfill permit ..................... c Dedicated Landfill(burial) by the permittee of the wastewater treatment facility ............................ DtSr,FECi CN 5 (b)(a) Chlorination...........................:................................................................................................................ Dechlorination....................................................................................................................................... (c) Ozone...................................................................................................................................................... Radiation................................................................................................................ CHEMICAL ADDITION SYSTEM(S ) (see definition No. 9) [not applicable to chemical additlores rated as hem (5)(a)(xi), (6)(a), (6)(b), (7)(b), (7)(e). (9a), (9)(b) or (9)(c) 5 points each: List .............................. ................ ........................:..............................................:. ........................5 ..................................................................................................................................... 5 ..CESSES ............................................................;..:................................................................... MISCELLANEOUS UNirS/PIaO (a) Holding Ponds, Holding Tanks or Settling Ponds for Organic or Toxic Materials inc!udng wastes from mining operations containing nitrogen or phosphorus compounds in amounts significantly greater than is common for domestic wastewater ........................... Effluent Flow Equalization (not applicable to storage basins which are inherent In land application systems).....2 (c) Stage Discharge (not applicable to storage basins inherent in land application systems)..................................5 ((d) Pumps.:................................................................................................................................................. (f)e) Stand -By Power Supply......................................................................................................................... Thermal Pollution Control Device................................................................................................................ TOTALPOINTS.......................................................................... :7C'�fo'e�i-rr, ClassI ....................................................... 5-25 Points Class11................................................................................................... 26-50 Points Class III........................................................................................................51.65 Points classIV .......................................................................................................66-Up Points -------------------- -------------- Facilhies having a rating of one through four points, inclusive, do not require a certified operator. Facilities having an activated sludge process will be assigned a minimum 6assif1=1on of Class if. Facilities having treatment processes for the removal of metal or cyanide will be assigned a minimum classification of Class II Facilities having treatment processes for the biological removal of phosphorus will be assigned a minimum classification of Class III. ------------- 0OOd DEFiNfTIONS ------------- The following definitions shall apply throughout this Subchapter. (1) Activated Carbon Beds. A physical/chemical method for reducing soluble organic material from wastewater effluent; The column -type beds used in this method will have a flow rate varying from two to eight gallons per minute per square foot and may be either upflow or downflow carbon beds. Carbon may or may not be regenerated on the wastewater treatment plant site; (2) Aerated Lagoons. A basin in which all solids are maintained in suspension and by which biological oxidation or organic matter is reduced through artificially accelerated transfer of oxygen on a flow -through basis; (3) Aeration. A process of bringing about intimate contact between air or high purity oxygen in a liquid by spraying, agitation or ditfuslon;(3a) Extended Aeration. An activated sludge process utilizing a minimum hydraulic detention time of 18 hour;. (4) Agriculturally managed site. Any site on which a crop Is produced, managed, and harvested (Crop Includes grasses, grains, trees, etc.); (5) Air Stripping. A process by which the ammonium ion is first converted to dissolved ammonia (pH adjustment) with the ammonia then released to the atmosphere by physical means; or other similar processes which remove petroleum products such as benzene, toluene, and xylene; (6) Carbon Regeneration. The regeneration of exhausted carbon by the use of a furnace to provide extremely high temperatures which volatilize and oxidize the absorbed impurftles; (7) Carbonaceous Stage. A stage of wastewater treatment designed to achieve 'secondary' allluent limits; (8) Centrifuge. A mechanical device In which centrifugal force Is used to separate solids from liquids or to separate rtquids of different dense:as; (9) Chemical Addition Systems- The addition of chemical(s) to wastewater at an application point for purposes of improving solids removal, pH adjustment, alkalinity control, etc.; the capability to experiment with different chemicals and different application points to achieve a specific result will be considered one system; the capability to add chemical(s) to dual units will be rated as one system; capability to add a chemical at a different application points for different Purposes will result in the systems being rated as separate systems; (10) Chemical Sludge Conditioning. The addition of a chemical compound such as lime. ferric chloride, or a polymer to wet sludge to coalesce the mass prior to its application to a dewatering device; 01) Closed Cycle Systems. Use of holding ponds or holding tanks for containment of wastewater containing Inorganic, non -toxic materials from sand, gravel, crushed stone or other similar operations. Such systems shall tarty a maximum of two points regardless of pumping facilities or any other appurtenances; (12) Combined Removal or Carbonaceous BOO and Nitrogenous Removal by Nitrification- A single stage system required to achieve permit effluent limits on BOO and ammonia nitrogen within the same biological reactor, (13) Dechlodnatlon. The partial or complete reduction of residual chlorine In a liquid by any chemical or phys.*=l process; (14) Denftriticaticn Process. The conversion of nhrate-nitrogen to nitrogen gas; b //f2, 52, JAMESTOWN ENGINEERING GROUP, INC.l CIVIL • SANITARY • SURVEYING CL 117 East Main Street • P.O. Box 365 • Jamestown, N.C. 27282 i V 4 r, Inc. Telephone (910) 886-5523 Fax (910) 886-5478 Charles J. Jones, PE & RLS = y f Daniel W. Pritchett, PE & RLS September 16, 1997 Re: WWTP Discharge Point Town of Denton Davidson County NPDES Permit No. NC 0026689 State Ref. No. CS 370519-04 JEG Job No. 95147 Mr. Abner Brady N.C. Department of Environmental Health And Natural Resources Division of Water Quality 585 Waughtown Road Winston-Salem, N.C. 27107 Dear Mr. Brady: As requested in our meeting on September 5, 1997, we have enclosed a copy of the original exhibit for speculative wasteloads. This exhibit has been revised to indicate the original and the revised requested discharge point on Lick Creek. If you have any questions or concerns, please feel free to contact us at 886-5523. Yours very truly, JAMESTOWN ENGINEERING GROUP, INC. Daniel W. Pritchett, PE & RLS DWP/cp Enclosure cc: Mr. John Everhart, Town Manager James B. Stephens, RLS M. William Tilley James D. Terrell State of North Carolina Department of Environment, Health and Natural Resources Division of Water Quality James B. Hunt, Jr., Governor Jonathan B. Howes, Secretary A. Preston Howard, Jr., P.E., Director June 4, 1997 Mayor C. Ray Kirkman 101 W. Newsom Ave. / P.O. Box 306 Denton, North Carolina 27239-0306 RECEIVED N.C. Dopt. of EI-3NR JUU 0 5 1997 Subject: Receipt of NPDES PermMlir1,BIBiYI Permit No. NC0026689 Town of Denton WWTPFi'9iofiai Office Davidson County Mayor Kirkman: The Division acknowledges receipt of your NPDES permit application, Short Form A, in triplicate, your request for an expansion from 0.3 MGD to 0.8 MGD with an approved EA and FONSI, and application fee (check #20108 for $400) received on May 2, 1997 for the above referenced facility. Be aware that the Division's regional office, copied below, must provide recommendations from the Regional Supervisor for this project prior to final action by the Division. You will be advised of any comments, recommendations, questions, or other information necessary for the application review. I am by copy of this letter, requesting that the regional office prepare a staff report containing recommendations regarding this discharge. This application has been assigned to me for review. If you have any questions, I can be contacted at (919)733-5083, extension 518. Sincerely, Ma VCabe NPDES Group cc: Winston-Salem Regional Office / Water Quality Section Permits & Engineering Unit Mr. Rich Glover Jamestown Engineering Group 117 East Main Street / P.O. Box 365 Jamestown, NC 27282 0A7 ASSIGNED TO _ nu b DATE ..�..� P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone 919-733-5083 FAX 919-733-0719 An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper N.C. DEPARTMENT OF ENVIRONMENT, HEALTH, AND NATURAL RESOURCES ENVIRONMENTAL MANAGEMENT COMMISSION NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM APPLICATION FOR PERMIT TO DISCHARGE - SHORT FORM A To be filed only by municipal wastewater discharges Do not attempt to complete this form before reading the accompanying instructions Please print or type 1. Name of organization responsible for facility Town of Denton 2. Address, location, and telephone number of facility producing discharge: A. Name Denton Wastewater Treatment Plant B. Mailing address: 1. Street ad 101 P�. Newsom Ave. , P. O. z3ox 306 2. City Denton 3. County UUZ dS Qn 4 North Carolina 5 �, 27239-0306 C. Location: 1. Street address Off NC SR 2569 �nnthwP,i of Denton 2. City Denton 3. County Davidson 4. State North Carolina D. Telephone No. (910) 859-4231 & (910) 359-4460 Area Code If all vour waste is discharged into a publicly owned waste treatment facility and to the best of your knowledge your are not required to obtain a discharge permit, proceed to item 3. Otherwise proceed directly to item 4. s 3. If you meet the condition stated above, check here and supply the information asked for below. After completing these items, please complete the date, title, and signature blocks below and return this form to the proper reviewing office without completing the remainder of the form. A. Name of organization responsible for receiving waste - B. Facility receiving waste: 1. Street address 2. City 3. County, 4. State 5. 7' 4. Type of treatment: A. None B. Primary E. F—Advanced (proposed) 5. De4ign flow (average daily) of facility 0.800 6. Percent BOD removal (actual): A. [)0-29.9 B. ❑ 30-64.9 E. [7,,95ormore (proposed) C. 71nterrnediate D. ®Secondary (existing) mgd (existing = 0.300 MGD) C 65-84.9 Population served: A. 71-199 B. []200-499 C C1500-999 E. 75,000-9,999 F. 710,000 or more 8. Number of separate discharge points: A. FZJ1 B. Cj2 C. []3 D. 74 D. ®85-94.9 D. ®1,000-4,999 E. []5 F. [)6 (existing) Description of waste water discharged to surface waters only (check as applicable). Discharge pper ratin day ow, (million gallons per operating ay) Volume trey fore discharging (percent) A. Average B. Maximum 0.800 MGD (proposed) 100% 10. If any waste water, treated or untreated, is discharged to places other than surface waters, check below as applicable. Waste water is discharged to I -low, mi ion gallons per operatingday 0-0.0099 1 0.01-0.049 2) 0.05-0.099 31 0.1-0.491.0-4.9 4 (5) 5 or more A. Deep well B. vanoration lagoon C. Subsurface percolation ss.stem Uther, specity: 11. Is any sludge ultimately returned to a waterway? A. Cl Yes B. ®No 12. a. Do you receive industrial waste? 1. FX'j Yes 2. 7No If yes, enter approximate number of industrial dischargers into system ' 13. Type of collection sewer system: A. ®Separate sanitary B. Combined sanitary and storm C. Both separate and combined sewer systems 14. Name of receiving water or waters Lick Creek (proposed) 15. Does your discharge contain or is it possible for your discharge to contain one or more of the following substances: ammonia, cyanide, aluminum, beryllium, cadmium, chromium, copper, lead, mercury, nickel, selenium, zinc, phenols. A. © Yes B. 7No I certify that I am familiar with the information contained in the application and that to the best of my knowledge and belief such information is true, complete, and accurate. C. Ray Kirxman Printed name of Person Signing Mayor Title T_0�_) Date Application Signed Sigrfatu#e o /ag¢li nt North Carolina General Statute 143-21 .6 (b)(2) provides that: Any person who knowingly makes any false statement representation, or certification in any application, record, report, plan, or other document files or required to be maintained under Article 21 or regulations of the Environmental Management Commission implementing that Article, or who falsifies, tampers �� ith, or knowlv renders inaccurate any recording or monitoring device or method required to be operated or maintatned under Article 21 or regulations of the Environmental Management Commission implementing that Article, shall be ilty of a misdemeanor punishable by a fine not to exceed 510,000, or by imprisonment not to exceed six months, or by both. (18 U.S.C. Section 1001 provides a punishment by a fine of not more than 510,000 or imprisonment not more than 5 years, or both, for a similar offense.) JAMESTOWN ENGINEERING GROUP, INC. CIVIL - SANITARY - SURVEYING 117 East Main Street - P.O. Box 365 - Jamestown, N.C. 27282 /4E, inc. Telephone (910) 886-5523 Fax (910) 886-5478 Charles J. Jones, PE & RLS Daniel W. Pritchett, PE & RLS April 30, 1997 Re: Wastewater Treatment Facility Expansion Town of Denton NPDES Permit No. NCO026689 Project No. CS370519-04 JEG Job No. 95147 Mr. Dave Goodrich, Supervisor NPDES Permit Group Division of Water Quality N. C. Department of EH&NR Post Office Box 29535 Raleigh, N. C. 27626-0535 Dear Mr. Goodrich: With regards to the referenced project and on behalf of the Town of Denton, we have enclosed the original and 2 copies of an NPDES Permit Application and $400.00 processing fee for upgrading of their treatment facility from 0.300 MGD to 0.800 MGD. The current NPDES permit for the 0.300 MGD facility was re -issued on July 29, 1994, to be in effect between September 1, 1994 and August 31, 1999. As the enclosed request occurs during the existing term of the current permit, we assume limits will be established for the existing 0.300 MGD facility as well as for the completed facility at a design discharge rate of 0.800 MGD. Please be aware that the Town of Denton made an application for a Special Order By Consent on August 19, 1996 (EMC SOC 96-23). In support of this request, we have enclosed a copy of the full 201 Facilities Plan approval letter from the Construction Grants and Loans Section dated April 16, 1997. In addition, we have enclosed a copy of the Verification of Speculative Limits dated October 5, 1995 and supporting proposed discharge location maps. Currently their surface discharge is to an unnamed tributary to Lick Creek which is projected as a zero flow stream for the 7Q10, and 30Q2 events. It is anticipated that this effluent outfall will be extended to the main body of Lick Creek as part of the facility's upgrade. As indicated in your department's enclosed letter of October 5, 1995, Lick Creek has a positive flow. during the 30Q2 event at this proposed discharge point. James B. Stephens, RLS - M. William Tilley - James D. Terrell Mr. Dave Goodrich April 30, 1997 Page -2- In addition to the extension of the facility's effluent outfall, the approved 201 Facilities Plan provides for expansion or provision of additional aeration basin capacity (oxidation channel), clarifiers, chlorination/dechlorination facilities and tertiary filters. If any additional information is required for your evaluation of this permit for 0.800 MGD surface discharge, please call. Your early consideration of this request would be appreciated. Yours very truly, JAMESTOWN ENGINEERING GROUP, INC. aniel W. ritchett, PE & RLS DWP/cp Enclosures cc: Mr. John Everhart, Town Manager Mr. Jay Lucas, Construction Grants and Loans Mr. Cecil Madden, PE, Construction Grants and Loans Mr. Abner Braddy, Winston-Salem Regional Office 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 October 5, 1995 Mr. John Everhart, Town Manager P. O. Box 306 Denton, NC 27239-0306 Subject: Verification of speculative limits Town of Denton NPDES Permit No. NCO026689 Davidson County Dear Mr. Everhart, A01:5WAA mom �EHNR The Technical Support Branch has received your request for verification/updating of the speculative limits for the Town's existing discharge location as well as for the second alternate discharge point. Given that both the 7Q10 and 30Q2 flow in the existing receiving stream, UT to Lick Creek, is zero, expansion would not be allowed at the existing location per 15A NCAC 2B .0206(d)(2). The flow for Lick Creek at the second alternate discharge location is estimated to be 7Q10=0 cfs and 30Q2= 0.09 cfs. 'Therefore, relocation and expansion would be allowed at this site. Based on current regulations, 15A NCAC 2B .0206(d)(1), upon expansion and 1...,..4:•... ,n ,L...^^--a glt's Os .linn3,n�ns Mss •tia inllnwww� 14w 4w wa,,,IA gwwt,r. i�rL,.IVY4V►• ♦V Y&V JVVVAA4 WYr=M .i&— .. W-- Parameter BOD5 (mg/L) NH3-N (mg/L.) D. O. (mg/L) TSS (mg(L) Fecal colifonn (#/100 mL) Chlorine (ug(L) P.O. Box 29535, Raleigh. North Carolina 27626-0535 An Equal Opportunity Affirmative Action Employer Summer / winter Limit 5110 2/4 616 30 / 30 200 / 200 17 / 17 Telephone 919-733-5083 FAX 919-733-9919 50% recycled/ 10% post -consumer paper These limitations would be applicable to both 0.6 and 1.0 MGD. Metals limits if applicable, would be evaluated when the facility submits a formal request for a permit Please be advised that response to this request does not guarantee that the Division will issue an NPDES permit to discharge treated wastewater into these receiving waters. It should be noted that new and expanding facilities, involving an expenditure of public funds or use of public (state) lands, will be required to prepare an environmental assessment (EA) when waste flows: 1) exceed or equal OS MGD, or 2) exceed one-third of the 7Q10 flow of the receiving stream. DEM will not accept a permit application for a project requiring an EA until the document has been approved by the Department of Environment. Health and Natural Resources and a Finding of No Significant Impact (FONSI) has been sent to the state Clearinghouse for review and comment The EA should contain a clear justification for the proposed facility and an analysis of potential alternatives which chonld incl»dP a thorn„ --valuation c f non-di=b.;e alternatives. Nondischarge alternatives or alternatives to expansion, such as spray irrigation, water conservation, inflow and infiltration reduction or connection to a regional treatment and disposal system, are considered to be environmentally preferable to a surface water discharge. In accordance with the North Carolina General Statutes, the practicable waste treatment and disposal alternative with the least adverse impact on the environment is required to be implemented. If the EA demonstrates that the project may result in a significant adverse affect on the quality of the environment, an Environmental Impact Statement would be required. Monica Swihart of the Water Quality Planning Branch can provide further information regarding the requirements of the N.C. Environmental Policy Act If you have any questions feel free to call Andy McDaniel of my staff at (919) 733- 5083 ext. 513. Donald Safrit E., Ass' ' � Chief Technical Su000 cc: Jamestown Engineering Group, Inc Winston-Salem Regional Office Permits and Engineering Unit Central Files EXHIBIT C PROPOSED EFFLUENT OUTFALL I TOWN OF DENTON DAVIDSON COUNTY, NORTH CAROLINA PROPOSED EFFLUENT j OUTFALL DISCHARGE POINT rfj G SPRINGS HIGH ROCK RD. LICK 0 N / / c I / WASTEWATER TREATMENT PLANT SITE 800' 400' 0 800' 1600' SCALE: 1 " 800' 95152\EXHIBIT.DVM State of North Carolina Department of Environment, W'A Health and Natural ResourcesA746ja Division of Water Quality James B. Hunt, Jr., Governor E H N R Jonathan B. Howes, Secretary A. Preston Howard, Jr., P.E., Director April 16, 1997 Mr. John Everhart, Town Manager Town of Denton Post Office Box 306 Denton, North Carolina 27239-0306 SUBJECT: Full Facilities Plan Approval Town of Denton 201 Facilities Plan Project No. CS370519-04 Dear Mr. Everhart: The subject amendment to the Town of Denton 201 Facilities Plan has been reviewed by the Division of Water Quality and has been found to comply with the requirements set forth in 40 CFR Part 35. Therefore, the subject plan is hereby given full approval. If you have any questions, please contact Mr. Jay Lucas of our staff at (919) 715-6225. Sincerely, �l ohn R. Blowe, P.E., Chief RMS/kc cc: Jamestown Engineering Group - Winston -Salem Regional Office PMB DMU FEU SRF Construction Grants & Loans Section �`wl � FAX 919-715-6229 P.O. Box 29579, Raleigh, North Carolina 27626-0579 �An Equal Opportunity/Affirmative Action Employer Voice 919-733-6900 71 PRE 50% recycles/10% post -consumer paper IF ., -f %JR141 MVVIr�I�u� % f� 1 I QUADRANGLE G ,�i EXHIBIT 8 (' l QUADRANGLE MAP ,.s,. MAP / — I�I�, A.K.A. DENTON N.W. 1 �: ' �, ` • ' 1 II 1 1 ) QUADRANGLE MAP c !, v •` ( 1 ►� T11arYi 6 •' � I )t IM 1'' �Illii, 1 I ► ► I ( ;� % '��` �af ;(j�' _ lI` I' I�)I 'l ► i gaA '� I'. ' , �t , `1 )! 1 • N ( '' \ I Traile 1� , _JI�' f i �. `r.. �.. 1 , ; 1 • , fJ! // l(i/ �� I• �• i i �Falk 7�s•" -1 L*J if efiton IF foe ,I"-- bs � 1 /� 1 ��' • ,d �� T.N. � I 1)6 1� k—I t�;109 111 EFFLUENT OUTFACE J_ f '� SCHARGE POINT695 ' -� • C re`k '� S ( (, rt l ( /) I' WASTEWATER., TREATMENT ✓ I 60 __ r �� PUNT --- — — j; 1 • • '�',- , ( 1 1 1 , 1 I ' 1 11 ` 1 I1 1�• ,!• 2 � r 1 1��r/' I' � /;--; �•• ` �',•I � , •t� If \) I�1J it ' 1 �•II '� i �. �`':.; ` l\\� ,i s( , 1 ��'' . ► I I I I I t/ ,11lp,. I/ 11• � `� � (� � ` �(�``;i\ / I, `' a � � I �) I, , A_ HIGH ROCK 4, HANDY __ : i .. / '��' — - , ►11 QUADRANGLE I QUADRANGLE % • r, 1 I /• III/ 1 ..ar. ZONE C i , A EXHIBIT E ��' C( FIRM FLOOD MAP PANEL NO. 370307-01505 MAY 1, 1980 o TOWN OF DENTON I, (AREA NOT iumimpni 1 R R. Uti J° • w�►s1Ew�Y�K ��J TR ATM F, Sal ■ Complete items 1, 2, and 3. Also complete item 4 if Restricted Delivery is desired. ■ Print your name and address on the reverse so that we can return the card to you. ■ Attach this card to the back of the mailpiece, or on the front if space permits. 1. Article Addressed to: The Honorable Scott Morris, Mayor Town w Denton PCB Box 306 Denton, I!'(: 27239-0306 �ElX Agent . ❑ Addressee Received b (Printed Name) Date of Delivery D. Is delivery address different from item 1? ❑ Yes If YES, enter delivery address below: ❑ No 3. .SS�ervr�ice Type &?6ertified Mail ❑ Express Mail ❑ Registered ❑ Return Receipt for Merchandise ❑ Insured Mail ❑ C.O.D. _ Lv -V4 ! 14. Restricted Delivery? (Extra Fee) ❑ Yes 2. 7009 2250 0004 1083 L012 '013 A)0V-re, AE :3S Fnrm 381 1 - Fehnjary 2004 Domestic Return Receipt 102595-02-M-1541 UNITED STATES POSTAL SERVICE j%4t- ~s r �- Frst Ctas� nAa�P ^a` `^ ostage-& Fehsi2sM • Sender: Please print your name, address, and ZIP+4 in this box • NCDENR - Division of Water Quality j 585 Waughtown Street Winston-Salem, NC 27107 I I I I I I I I I I I I f I I I I I I I I I I I I I I I I I I I I I a I I I I I I I I I I I I I I I I I I 110111111 ■ Complete items 1, 2, and 3. Also complete item 4 if Restricted- Delivery is desired. ■ Print your name and address on the reverse so that we can return the card to you. ■ Attach this card to the back of the mailpiece, or on the front if space permits. 1. Article Addressed to: The Honorable Scott Morris, Mayor Town of Denton PO Box 306 Denton, NC 27239-0306 A. Agent ❑ Addressee B. Received by (Pri ted Name) C. Date of Delivery ON; D. Is delivery address different from Rem 1? ❑ Yes If YES, enter delivery address below: 0 No AJJs 2 4 2012 i 3. Serv' e Type ) 3S Certified Mail ❑ Express Mail ❑ Registered ❑ Return Receipt for Merchandise ❑ Insured Mail ❑ C.O.D. -01 S.� 14. Restricted Delivery? (Extra Fee) ❑ Yes z. Ar ticle (IPansfi 7010 2780 0001 4236 4021 PS Form 3811. February 2004 Domestic Retum Receipt 102595-02-M-154i IGNITED STATES First -Class Mail D Postage & Fees Paid USPS Permit No. G-10 * Sender: Please print your name, address, and ZIP+4 in this box 0 NCDENR Water Quality Section 585 Waughtown Street Winston-Salem, NC 27107 kik 01iJ.. -