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Home My WebLink AboutNC0036277_Authorization to Construct_20080222WDES DOCUWENT SCANNINU COVER :iMEET NPDES Permit: NC0036277 McDowell Creek WWTP Document Type: Permit Issuance Wasteload Allocation Authorization to Construct (AtC) Permit Modification Complete File - Historical Engineering Alternatives (EAA) Correspondence Instream Assessment (67b) Speculative Limits Environmental Assessment (EA) Document Date: February 22, 2008 Thig document ig prizited on reuise paper - ignore aYiy content on the revenge Bide 63(oZ77 Ao2 Ell BLACK & VEATCH 8520 Cliff Cameron Drive Black & Veatch International Company Suite 210 Charlotte, North Carolina 28269 Ph (704) 548-Ml Fax (704) 5484WO Charlotte -Mecklenburg Utilities B&V Project 97057.450 McDowell Creek Wastewater Treatment Plant B&V File G-1.0.1 Expansion to 12 MGD CMU Project 150-00-621 Mr. Alan Klimek, P. E. NCDENR, NPDES Unit 1617 Mail Service Center Raleigh, NC 27966-1617 Dear Mr. Klimek: November 12, 2007 Ii F E P, 2 2 2008 1 Subject: Engineer's Certification NPDES Permit NCO036277 Mecklenburg County Please find enclosed both Engineer's Certifications for the McDowell Creek Wastewater Treatment Plant Expansion from 6.6 mgd to 9 mgd and 9 mgd to 12 mgd. The original attachment to the ATC has been modified to match what was actually constructed and placed into service. Originally the expansion from 6.6 mgd to 12 mgd was going to be achieved via two construction phases. However, the expansion was completed in one construction project and therefore the McDowell Creek Wastewater Treatment Plant will begin meeting the requirements for the 12 MGD permit on December 1, 2007. Please forward this notification to any other required recipient not included on the cc list below. Contact me at (704) 622-7582 if you have any questions. Very truly yours, BLACK & VEATCH IN RNATIONAL OMPANY Alan P;ty,.Project E ICEIVED NIP, ')937 LOAN 1EC;0N 631 A 0 1 Permit No. NC0036277 CMU—McDowell Creek WWTP March 2, 2004 Engineer's Certification — Proiect Number 036277AOIB — 9.0 MGD I, Alan C. Petty , 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 project, McDowell Creek W WTP Expansion from 6.6MGD to 9MGD, Mecklenburg County for the Project Name Location Permittee hereby state that, to the best of my abilities, due care and diligence was used in the observation of the following installations: • Conversion of filtrate equalization basin to 70-foot diameter primary clarifier number 4; • Demolition of the existing trickling filter structures; • Construction of a third 5-stage BNR treatment basin; • Construction of a new 100-foot diameter final clarifier; • Construction of a new 15 MGD RAS/WAS pumping station; • Construction of a new blower building; • Construction of a primary sludge pumping station; • Construction of a membrane filtration facility including filtration equipment, tense punaPing equipment (Reuse pumping equipment not installed); non -potable water pumping equipment, sodium hypochlorite and sodium bisulfite storage and feed equipment, and control and electrical rooms; • Construction of a chlorine contact tank for membrane feed; • a Reuse pumping equipment not installed); • Construction of a new cascade post -aeration structure; • Construction of an 80-foot diameter filtrate dewatering equalization tank; • Construction of a new chemical storage and feed facility; • Construction of a new lime storage and feed facility; and • All necessary piping and appurtenances. W C Signature Registration No. 027706 Date 11/12/07 Mail this Certification to the NPDES Unit DENR/DWQ 1617 Mail Service Center Raleigh, NC 27699-1617 WVrEle1 d ED ntcv . OXTRUCT10;d (WITS A LOAN mcM Permit No. NCO036277 CMU — McDowell Creek W WTP March 2, 2004 Engineer's Certification — Project Number 036277A01B —12.0 MGD 1, Alan C. Petty , 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 project, McDowell Creek W WTP Expansion from 9MGD to 12MGD, Mecklenburg County for the Project Name Location Permitter hereby state that, to the best of my abilities, due care and diligence was used in the observation of the following installations: • Construction of a new headworks structure and influent pumping station including influent 'screening, grit removal, and pumping for the ultimate design capacity of the plant; • i Construction of two one 1.3 million gallon (110-foot diameter) flow equalization day tanks; • Construction of a new -1 2-cell, 4-912 million gallon storm flow equalization basin; • Construction of a new 70-foot diameter primary clarifier; • I Construction of a fourth 5-stage BNR treatment basin; • Construction of a new 100-foot diameter final clarifier; • Construction of a new 5-cell effluent filtration structure; • Construction of a new three channel ultraviolet disinfection structure; installed) r.............:.... of a new o eel! 457,00 gall,...waste sludge t.,aa:..a ...sin;' at installed) • Construction of twe one new 90-foot diameter anaerobic digesters; • Construction of a new digester control building including all necessary heat exchangers, recirculation pumps, heating water pumps, gas collection equipment, heating water boilers, and controls; • Construction of a new digester gas scrubbing system; • Construction of a new 48-inch ductile iron gravity effluent line; and All necessary piping and appurtenances. Signature Date II/lout , Registration No. 027706 Mail this Certification to the NPDES Unit DENR/DWQ 1617 Mail Service Center Raleigh, NC 27699-1617 IECEIVED NJOV 1 n 2007 OCKTWK NGPJ#A B& LGh'r.:�.vTGN Michael F. Easley, Governor State of North Carolina William G. Ross, Jr., Secretary Department of Environment and Natural Resources Alan W. Klimek, P.E., Director Division of Water Quality March 2, 2004 Mr. Barry Gullet, Deputy Director Charlotte -Mecklenburg Utilities 5100 Brookshire Boulevard Charlotte, North Carolina 28216 Subject: Authorization to Construct Permit Issuance ATC (ATO) Number 036277A01 B NPDES Permit NCO036277 Mecklenburg County Dear Mr. Gullet: A request for an Authorization to Construct (ATC) was received by the Division and final plans and specifications for the subject project have been found to be satisfactory. Authorization is hereby granted for construction activities at Charlotte Mecklenburg Utilities - McDowell Creek Wastewater Treatment Plant associated with expansion from 6.6 MGD to 12.0 MGD. This expansion will be achieved via two construction phases. The first phase is for expansion from 6.6 MGD to 9.0 MGD. The second phase is for expansion from 9.0 MGD to 12.0 MGD. This ATC is specifically issued for the following construction activities: Expansion from 6.6 MGD to 9.0 MGD • Conversion of filtrate equalization basin to 70-foot diameter primary clarifier number 4; • Demolition of the existing trickling filter structures; • Construction of a third 5-stage BNR treatment basin; • Construction of a new 100-foot diameter final clarifier; • Construction of a new 15 MGD RAS/WAS pumping station; • Construction of a new blower building; • Construction of a new primary sludge pumping station; • Construction of a membrane filtration facility including filtration equipment, reuse pumping equipment; non -potable water pumping equipment, sodium hypochlorite and sodium bisulfite storage and feed equipment, and control and electrical rooms; • Construction of a chlorine contact tank for membrane feed; • Construction of a reuse pumping station; • Construction of a new cascade post -aeration structure; • Construction of an 80-foot diameter filtrate dewatering equalization tank; • Construction of a new chemical storage and feed facility; • Construction of a new lime storage and feed facility; and • All necessary piping and appurtenances. Expansion from 9.0 MGD to 12.0 MGD Construction of a new headworks structure and influent pumping station including influent screening, grit removal, and pumping for the ultimate design capacity of the plant; Construction of two 1.3 million gallon (110-foot diameter) flow equalization -day tanks; 1617 MAIL SERVICE CENTER, RALEIGH, NORTH CAROLINA 27699-1617 - TELEPHONE 919-733-5083/FAX 919-733-0719 VISIT US ON THE WEB AT http://h2o.enr.state.nc.us/NPDES Permit No. NCO036277 CMU — McDowell Creek WWTP March 2, 2004 • Construction of a new 3-cell, 18 million gallon storm flow equalization basin; • Construction of a new 70-foot diameter primary clarifier; • Construction of a fourth 5-stage BNR treatment basin; • Construction of a new 100-foot diameter final clarifier; • Construction of a new 5-cell effluent filtration structure; • Construction of a new three channel ultraviolet disinfection structure; • Construction of a new WAS thickening building including pumps, a new 2.0 meter gravity belt thickener, polymer feed system; blowers, electrical, controls, and HVAC equipment; • Construction of a new 2-cell, 457,000 gallon waste sludge holding basin; • Construction of two new 90-foot diameter anaerobic digesters; • Construction of a. new digester control building including all necessary heat exchangers, recirculation pumps, heating water pumps, gas collection equipment, heating water boilers, and controls; • Construction of a new digester gas scrubbing system; • Construction of a new 48-inch ductile iron gravity effluent line; and • All necessary piping and appurtenances. This Authorization to Construct is issued in accordance with NPDES Permit No. NCO036277 issued January 9, 2004, and shall be subject to revocation unless the wastewater treatment facilities are constructed in accordance with the conditions and limitations specified in the permit. The sludge generated from these treatment facilities must be disposed of in accordance with G.S. 143-215.1 and in a manner approved by the North Carolina Division of Water Quality. 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 this Division, such as the construction of additional or replacement wastewater treatment or disposal facilities. Upon classification of the facility by the Certification Commission, the Permittee shall employ a certified water pollution control treatment system operator to be in responsible charge (ORC) of the water pollution control treatment system. The operator must hold a certificate of the type and grade at least equivalent to or greater than the classification assigned to the water pollution control treatment system 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 Title 15A, Chapter 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, and must properly manage and document daily operation and maintenance of the facility and must comply with all other conditions outlined in Title 15A, Chapter 8G, .0204. Once the facility is classified, the Permittee must submit a letter to the Certification Commission which designates the operator in responsible charge within: (A) Sixty calendar days prior to wastewater being introduced into a new system or (B) within 120 calendar days of the following, (i) after receiving notification of a change in the classification of the system requiring the designation of a new ORC and back-up ORC or (ii) a vacancy in the position of ORC or back-up ORC. A copy of the approved plans and specifications shall be maintained on file by the Permittee for the life of the facility. The Operational Agreement between the Permittee and the Environmental Management Commission is incorporated herein by reference and is a condition of this Permit. Noncompliance with the terms of the Operational Agreement shall subject the Permittee to all Permit No. NC0036277 CMU - McDowell Creek W WTP March 2, 2004 sanctions provided by G. S. 143-215.6 for violation of or failure to act in accordance with the terms and conditions of this Permit. Failure to abide by the requirements contained in this Authorization to Operate may subject the Permittee to an enforcement action by the Division of Water Quality in accordance with North Carolina General Statute 143-215.6A to 143-215.6C. The issuance of this Authorization to Operate 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. One (1) set of approved plans and specifications is being forwarded to you. If you have any questions or need additional information, please contact Mr. Mark McIntire, P.E., telephone number (919) 733-5083, extension 508. Sincerely, 4� (�an W. Klimek, P.E. cc: Central Files NPDES Unit, Permit File Mooresville Regional Office, Water Quality Training and Certification Unit Mr. Dave Parker, Black & Veatch, 8520 Cliff Cameron Drive - Suite 350, Charlotte, NC 28269-0019