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Home My WebLink AboutNCG550981_Compliance Evaluation Inspection_20180907 ROY COOPER Governor MICHAEL S.REGAN t.; Secretary N a LINDA CULPEPPER Interim Director September 7, 2018 Dawn Trembath 4344 Sterling Drive Durham,NC 27712 RECEIVED/DENR/DWR Subject: Compliance Evaluation Inspection SEP Single Family Wastewater Treatment System 1 2 2018 NPDES General Permit NCG550000 Water Resources Certificate of Coverage NCG550981 Permitting Section Durham County Dear Ms. Trembath: On September 5, 2018, Vanessa Manuel from the Raleigh Regional Office visited your single-family residence (SFR)wastewater treatment system to evaluate compliance with the subject NPDES General Permit. Your assistance during the inspection was greatly appreciated. Our records indicate the treatment system consists of a septic tank, sub-surface sand filter, tablet chlorinator with chlorine contact chamber, and discharge pipe. General Permit NCG550000 and Certificate of Coverage (COC)NCG550981 authorize the discharge of domestic wastewater from your treatment system to receiving waters designated as an unnamed tributary to the Eno River (classified WS-IV; B;NSW) in the Neuse River Basin. The authorized discharge is in accordance with the effluent limits and monitoring requirements established within the General Permit. The checked boxes below show what conditions were noted at your facility: X Chlorine tablets in the chlorinator: You are reminded that it is required that chlorine tablets be maintained in the chlorinator to ensure proper disinfection of the discharged wastewater. Chlorine tablets provide effective disinfection and prevent/limit harmful bacteria from discharging to the environment. The product label for these tablets must indicate the tablets are approved for wastewater use and not for swimming pools. The inspector did not observe any chlorine tablets in the chlorinator. Part 1, Permit Conditions (Operation &Maintenance), item 4 within General Permit NCG550000 requires the permittee to maintain all system components, including...disinfection units...at all times and in good operating order. Please ensure the correct type of tablets are used and maintained in the chlorinator. ® Treatment system operation: The wastewater treatment system shall be maintained at all times to prevent seepage of sewage to the surface of the ground. ® Pumping the septic tank: You are required to inspect the septic tank at least yearly to determine if solids must be removed or if other maintenance is necessary. Septic tanks should be pumped out every five years or when the solids level is found to be more than 1/3 of the liquid depth in the septic tank compartment, whichever is greater. A pumping company can check the status periodically and State of North Carolina I Environmental Quality I Water Resources I Raleigh Regional Office 1628 Mail service Center I Raleigh,North Carolina 27699-1628 919 791-4200 NGE v.,...r�MFG477fia7�,�,�,r�7.k« ' z rt . a Dawn Trembath (NCG550981) September 7, 2018 determine when pumping is required. Within 45-days of receiving this letter,please let this office the date the septic tank was last checked and/or pumped out. VI Analyzing the effluent: Part 1. A., Effluent Limitations and Monitoring Requirements, within General Permit NCG550000 requires a permittee to sample and analyze the effluent leaving his/her treatment system prior to discharge annually. Parameters to be sampled and analyzed include Flow, BOD (Biochemical Oxygen Demand), Total Suspended Solids,Fecal Coliform and Total Residual __-- Chlorine.If you have not-monitored your effluent within-the-last 12-months;then please collect a representative sample of the effluent if it is discharging, have it analyzed by a certified commercial laboratory and submit the results to this office no later than November 30, 2018. If, during this time, you are unable to collect a representative sample of the discharge due to insufficient flow from the discharge pipe, then update this office with that information and continue to monitor the discharge and if conditions for sampling become favorable, then arrange to collect a sample. VI Discharge outlet location. A visual review of the outfall location shall be executed twice each year (one at the time of sampling)to ensure that no visible solids or other obvious evidence of system malfunctioning is observed. Any visible signs of a malfunctioning system shall be documented and steps taken to correct the problem. Please ensure the outlet is always maintained and cleared of vegetation, soil and leaves. The discharge pipe was visible and accessible the day of the inspection. The wastewater treatment system should be periodically inspected to ensure the treatment components are always rriaintained and in good operating order. You are also reminded to maintain all monitoring data onsite for a minimum of three years from date of sampling and available for inspection. If you have questions or comments about this inspection or the requirements to take corrective action(if applicable),then please contact Vanessa Manuel at 919-791-4255. Licensed plumbers should be used to make plumbing changes within your home. Contractors for installing disinfection or other equipment may be found in the Yellow Pages under Environmental Consultants. Sincerely, )/7-- S. Daniel Smith, Supervisor Water Quality Regional Supervisor Raleigh Regional Office Attachment(s): Inspection Report Cc: RRO/SWP Files Charles Weaver,NPDES Compliance&Expedited Permitting Unit 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 1E IS 2 I 3 I NCG550981 111 12 I 18/09/05 117 18 19 IS I 201 I 21111 1 1 1 1 Ilill111 ( 1I III IIII 11IIIII I1I1111I1li 166 Inspection Work Days Facility Self-Monitoring Evaluation Rating 51 QA --------------Reserved------------ 671 7°11 71i I 72 1 n, 1 73I I I' 761 1 1 1 1 1 1 180 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 40AM 18/09/05 13/08/01 4344 Sterling Drive 4344 Sterling Dr Exit Time/Date Permit Expiration Date Durham NC 27712 11 OOAM 18/09/05 18/07/31 Name(s)of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) Other Facility Data /// Name,Address of Responsible Official/Title/Phone and Fax Number Contacted Dawn Trembath,4344 Durham NC 2771211919-383-0373/ No Section C Areas Evaluated During Inspection(Check only those areas evaluated) Permit El Operations&Maintenance M Facility Site Review El 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 Vanessa E Manuel RO WQ//91C .n-z – 91,- 1– Sew. s 2.-c. /S ignat a of Managei Q A R:bview- - Agency/Office/Phone and Fax Numbers D.te EPA Form 7.0-3(Rev 9-94)Previous edit ons a e obsolete / Page 1 NPDES yr/mo/day Inspection Type 1 3I NCG550981 I11 121 18/09/05 I 17 18 u Section D Summary of Finding/Comments(Attach additional sheets of narrative and checklists as necessary) See attached inspection report. Page 2 Permit. NCG550981 Owner-Facility 4344 Sterling Drive Inspection Date' 09/05/2018 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 0 ❑ #Are there any special conditions for the permit? ❑ 0 0 Is access to the plant site restricted to the general public'? 0 0 •, ❑ Is the inspector granted access to all areas for inspection? 0 0 0 Comment Operations & Maintenance Yes No NA NE Is the plant generally clean with acceptable housekeeping'? 0 0 ❑ Does the facility analyze process control parameters,for ex MLSS, MCRT, Settleable 0 0 El ❑ Solids, pH, DO, Sludge Judge, and other that are applicable'? Comment Septic Tank Yes No NA NE (If pumps are used) Is an audible and visual alarm operational'? 0 0 0 Is septic tank pumped on a schedule'? 0 ❑ ® ❑_ Are pumps or syphons operating properly'? ❑ ❑ ❑ Are high and low water alarms operating properly'? 0 0 ❑ Comment: Sand Filters (Low rate) Yes No NA NE (If pumps are used)Is an audible and visible alarm Present and operational'? 0 0 ® 0 Is the distribution box level and watertight'? ❑ 0 0 L2 Is sand filter free of ponding? 0 0 ❑ Is the sand filter effluent re-circulated at a valid ratio'? 0 0 ❑ #Is the sand filter surface free of algae or excessive vegetation? 0 0 117 ❑ #Is the sand filter effluent re-circulated at a valid ratio?(Approximately 3 to 1) 0 0 El El Comment Sub-surface sand filter Disinfection-Tablet Yes No NA NE Are tablet chlorinators operational'? ❑ 0 0 Are the tablets the proper size and type'? ❑ ❑ ❑ Number of tubes in use? 1 Page# 3 • Permit: NCG550981 Owner-Facility: 4344 Sterling Drive Inspection Date. 09/05/2018 Inspection Type• Compliance Evaluation Yes NoldAtdE Disinfection-Tablet Is-the level of chlorineresidual acceptable Is the contact chamber free of growth, or sludge buildup Is there chlorine residual prior to de-chlorination Comment The inspector-did-not-observe-any-chlorine-tablets_ln-the_chlorinator. _-- _ Yes fdoPlAtdE 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# 4