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HomeMy WebLinkAboutNC0024538_Authorization to Construct_20170911Water Resources ENVIRONMENTAL QUALITY ROY COOPER Gove17101 MICHAEL S REGAN Sect eta1), S JAY ZIMMERMAN Du ecto7 September 11 , 2017 Mr David Hux Water Resources Director 824 West Grover Street Shelby, North Carolina 28150 SUBJECT: Authorization to Construct A to C No. 024538A03 City of Shelby First Broad River WWTP NPDES No. NCO024538 Dear Mr. Hux: A letter of request for an Authorization to Construct was received July 28, 2017 by the Division of Water Resources (Division), and final plans and specifications for the subject project have been reviewed and found to be satisfactory. Authorization is hereby granted for the construction of modifications to the existing 6 0 MGD First Broad River WWP, with discharge of treated wastewater into the First Broad River in the First Broad Raver Basin This authorization results in no increase in design or permitted capacity and is awarded for the construction of the following specific modifications: Installation of new headworks consisting of one (1) inclined manual bar screen designed for 20 MGD , one (1) inclined rotary drum bar screen designed for 15.75 MGD, relocation of existing mechanical rotary drum bar screen, two (2) shaftless screw conveyors sized at 60 cf/hr, one (1) grit removal system designed for 21 MGD which includes one (1) forced vortex grit removal chamber, one (1) vacuum primed grit pumping system, one (1) grit concentrator, one (1) grit washer/classifier, piping and controls, replacement of exiting 24" influent force main with new 1,100 ft long 30" influent force main; upgrade of influent pump station which includes installation of two (2) new 5,300 GPM at 68 ft TDH non - clog centrifugal influent pumps with VFD, installation of new VFDs on existing two (2) pumps, piping and controls, replacement of existing primary clarifier splitter box with a new splitter box for existing four (4) primary clarifiers, piping and controls; installation of two (2) enclosed circular 337,500 gallon anaerobic digesters with total four (4) 5 HP mixers (two per digester) with off gas removal/processing and with sludge heating system consisting of heat exchangers, sludge recirculation pumps, hot water boiler system consisting of boilers, hot water circulation pumps, piping and controls; installation of three (3) 250 GPM at 48 9 ft TDH horizontal chopper digested sludge recirculation pumps, piping and controls; installation of one (1) 250,000 gallon sludge holding tank with one (1) 8 HP submersible mixer; piping and controls; installation of two (2) belt filter press systems rated for 2,000 dry lb/hr consisting of two (2) belt filter presses, polymer feed system consisting of two (2) polymer blenders with progressive cavity polymer feed pump, dilution water assembly, belt wash system, solution discharge assembly, piping and controls; installation of three (3) 200 GPM at 46 2 ft TDH progressive cavity belt filter press feed/transfer pumps, piping and controls; installation of filtrate pump station State of North Carolina I Environmental Quality I Water Resources 512 N Salisbury Street 11612 Mad service Center I Raleigh, North Carolina 27699-1612 Phone 919 807 6464 Mr. David Hux Water Resources Director September 11, 2017 Page 2 of 3 consisting of two (2) 550 GPM at 50 ft TDH submersible non -clog filtrate pumps, piping and controls; installation of two (2) 4 HP submersible mixers in existing two (2) filtrate equalization tanks (one in each), piping and controls, installation of three (3) 225 GPM at 129 ft TDH vertical turbine non potable water pumps, piping and controls; installation of one (1) new 6,000 lbs/hr (dry) cake conveyor and controls; installation of new 7,600 fe roofed cake storage; demolition of existing composting facility; in conformity with the project plans, specifications, and other supporting documentation comprising the ATC Permit Application package submitted to the Department of Environmental Quality. This ATC is issued in accordance with Part III, Paragraph A of NPDES Permit No. NC0024538 issued effective December 1, 2013, and shall be subject to revocation unless the wastewater treatment facilities are constructed in accordance with the conditions and limitations specified in Permit No. NC000024538. It is the Owner's responsibility to ensure that the as -constructed project meets the requirements of all applicable regulations and statutes, the ATC Permit Application package, and all of the requirements contained herein. Failure to comply may result in penalties in accordance with North Carolina General Statute §143-215.6A through §143-215.6C. The sludge generated from these trea7ment facilities must be disposed of in accordance with G.S. 143-215.1 and in a manner approved by the Division. In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions, the Permittee shall take immediate corrective action, including those as may be required by the Division, such as the construction of additional or replacement wastewater treatment or disposal facilities The Mooresville Regional Office, telephone number704-663-1699, shall be notified at least forty- eight (48) hours in advance of operation of the installed facilities so that an on site inspection can be made. Such notification to the regional supervisor shall be made during the normal office hours from 8:00 a.m. until 5.00 p.m. on Monday through Friday, excluding State Holidays. Upon completion of construction and prior to operation of this permitted facility, a certification must be received from a Professional Engin: er certifying that the permitted facility has been installed in accordance with the NPDES Permit and the ATC Permit Application package. Mail the Certification to: Division of Water Resources, WQ Permittir-g — NPDES, 1617 Mail Service Center, Raleigh, NC 27699- 1617. Upon classification of the facility by the Certification Commission, the Permittee shall employ a certified wastewater treatment plant operator to be in responsible charge (ORC) of the wastewater treatment facilities. The operator must hold a certificate of the type and grade at least equivalent to or greater than the classification assigned to the wastewater treatment facilities by the Certification Commission. The Permittee must also employ a certified back-up operator of the appropriate type and grade to comply with the conditions of T15A•8G.0202. The ORC of the facility must visit each Class I facility at least weekly and each Class II, III and IV facility at least daily, excluding weekends and holidays, must properly manage the facility, must document daily operation and maintenance of the facility, and must comply with all other conditions of T15A:8G.0202. A copy of the project plans and specifications shall be maintained on file by the Permittee for the life of the facility. Mr David Hux Water Resources Director September 11, 2017 Page 3 of 3 During the construction of the proposed additions/modifications, the Permittee shall continue to properly maintain and operate the existing wastewater treatment facilities at all times, and in such a manner, as necessary to comply with the effluent limits specified in the NPDES Permit. You are reminded that it is mandatory for the project to be constructed in accordance with the North Carolina Sedimentation Pollution Control Act, and when applicable, the North Carolina Dam Safety Act. In addition, the specifications must clearly state what the contractor's responsibilities shall be in complying with these Acts. Prior to entering into any contract(s) for construction, the recipient must have obtained all applicable permits from the State. The issuance of this ATC does not preclude the Permittee from complying with any and all statutes, rules, regulations, or ordinances which may be imposed by other government agencies (local, state, and federal) which have jurisdiction. If you have any questions or need additional information, please contact Trupti Desai at telephone number (919) 807-6351. &Y,Sincerely,yg S. Jay Zimmerman, P.G. Director, Division of Water Resources With Engineer's Certificate attached: cc DWR Mooresville Regional Office, Water Quality Programs Central Files e -copy Mr Will Shull, P.E. HDR Email: Will.Shull@hdrinc com NPDES File Without Engineer's Certificate attached: cc: Cleveland County Health DWI/Mr. Ken Pohlig City of Shelby First Broad River WWTP NPDES No. NCO024538 Authorization to Construct No. 024538A03 Issued September 11, 2017 Page 1 of 2 Engineer's Certification I, , as a duly registered Professional Engineer in the State of North Carolina, having been authorized to observe (periodically/weekly/full time) the construction of the modifications and improvements to the First Broad Wastewater Treatment Plant, located in Cleveland County, hereby state that, to the best of my abilities, due care and diligence was used in the observation of the following construction: Installation of new headworks consisting of one (1) inclmed manual bar screen designed for 20 MGD, one (1) inclined rotary drum bar screen designed for 15.75 MGD, relocation of existing mechanical rotary drum bar screen, two (2) shaftless screw conveyors sized at 60 cf/hr, one (1) grit removal system designed for 21 MGD which includes one (1) forced vortex grit removal chamber, one (1) vacuum primed grit pumping system, one (1) grit concentrator, one (1) grit washer/classifier, piping and controls; replacement of exiting 24" influent force main with new 1,100 ft long 30" influent force main, upgrade of influent pump station which includes installation of two (2) new 5,300 GPM at 68 ft TDH non - clog centrifugal influent pumps with VFD, installation of new VFDs on existing two (2) pumps, piping and controls; replacement of existing primary clanfier splitter box with a new splitter box for existing four (4) primary clarifiers, piping and controls; installation of two (2) enclosed circular 337,500 gallon anaerobic digesters with total four (4) 5 HP mixers (two per digester) with off gas removal/processing and with sludge heatmg system consisting of heat exchangers, sludge recirculation pumps, hot water boiler system consisting of boilers, hot water circulation pumps, piping and controls; installation of three (3) 250 GPM at 48.9 ft TDH horizontal chopper digested sludge recirculation pumps, piping and controls; installation of one (1) 250,000 gallon sludge holding tank with one (1) 8 HP submersible mixer; piping and controls; installation of two (2) belt filter press systems rated for 2,000 dry lb/hr consisting of two (2) belt filter presses, polymer feed system consisting of two (2) polymer blenders with progressive cavity polymer feed pump, dilution water assembly, belt wash system, solution discharge assembly, piping and controls; installation of three (3) 200 GPM at 46.2 ft TDH progressive cavity belt filter press feed/transfer pumps, piping and controls; installation of filtrate pump station consisting of two (2) 550 GPM at 50 ft TDH submersible non -clog filtrate pumps, piping and controls; installation of two (2) 4 HP submersible mixers in existing two (2) filtrate equalization tanks (one in each), piping and controls; installation of three (3) 225 GPM at 129 ft TDH vertical turbine non potable water pumps, piping and controls; installation of one (1) new 6,000 lbs/hr (dry) cake conveyor and controls; installation of new 7,600 ft' roofed cake storage; demolition of existing composting facility; in conformity with the project plans, specifications, and other supporting documentation comprising the ATC Permit Application package submitted to the Department of Environmental Quality. City of Shelby First Broad River WWTP NPDES No. NCO024538 Authorization to Construct No. 024538A03 Issued September 11, 2017 Page 2 of 2 I certify that the construction of the above referenced project was observed to be built within substantial compliance, intent and in confo--nity with all applicable regulations and statutes and the project plans, specifications, and other supporting documentation comprising the Authorization to Construct Permit Application package. Signature Date Registration No. Mail this Certification to: Attn: Trupti Desai Complex Permitting Unit DEQ/DWR/Water Quality Programs 1617 Mail Service Center Raleigh, NC 27699-1617