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HomeMy WebLinkAboutNC0024228_authorization to construct_20131009hie dccrbzY�z$ AiL ern NCDENR North Carolina Department of Environment and Natural Resources Division of Water Resources Water Quality Programs Pat McCrory Thomas A. Reeder John E. Skvarla, III Governor Director Secretary October 9, 2013 Mr. Terry Houk, Assistant Director of Public Services City of High Point 211 S. Hamilton Street High Point, North Carolina 27261 SUBJECT: Authorization to Construct A to C No. 024228A03 City of High Point Westside Wastewater Treatment Plant Improvements, Phase 3 Dear Mr. Houk: A letter of request for an Authorization to Construct was received July 26, 2013, 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 6.2 MGD City of High Point Westside Wastewater Treatment Facility, with discharge of treated wastewater into Rich Creek in the Yadkin -Pee Dee River Basin. This authorization results in an increase in design capacity to 10 MGD, but limits the permitted capacity to 8.2 MGD, and is awarded for the construction of the following specific modifications: New Biological Nutrient Removal (BNR) system consisting of four parallel trains with total volumes of 0.50 MG anaerobic zone, 0.91 MG 1st stage anoxic zone, 4.95 MG aerobic zone, 1.48 MG 2nd stage anoxic zone, 0.29 MG re -aeration zone, including fine bubble diffusers and 40 vertical mixers; new blower/NRCY Building including two (2) 6,074 ICFM blowers, two (2) 4,050 ICFM blowers, and four (4) 6,944 gpm NRCY pumps; a new final clarifier distribution box; new 130-foot diameter, 15-foot side -water depth final clarifier; two (2) 3,550 gpm RAS pumps; a new process drain pump station, including one (1) 1,100 gpm pump; a new clarifier drain pump station including one (1) 800 gpm pump; two (2) 150 gpm non -potable water pumps; associated electrical and control/SCADA work, sitework, and yard piping, in conformity with the project plans, 1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Location: 512 N. Salisbury St. Raleigh, North Carolina 27604 Phone: 919-807-6300 \ FAX: 919-807-6492 Internet: www.ncwateroualitv.orq An Equal Opportunity \ Affirmative Action Employer One North Carolina Naturally Mr. Terry Houk, Assistant Director of Public Services October 9, 2013 Page 2 specifications, and other supporting data subsequently filed and approved by the Department of Environment and Natural Resources. This Authorization to Construct is issued in accordance with Part III, Paragraph A of NPDES Permit No. NC0024228 issued June 20, 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. NC0024228. 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 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 Winston-Salem Regional Office, telephone number (336) 771-5000, 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 engineer certifying that the permitted facility has been installed in accordance with the NPDES Permit, this Authorization to Construct and the approved plans and specifications. Mail the Certification to: Attn: Ron Berry, DENR/DWR, NPDES Unit, 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 approved plans and specifications shall be maintained on file by the Permittee for the life of the facility. Mr. Terry Houk, Assistant Director of Public Services October 9, 2013 Page 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. Failure to abide by the requirements contained in this Authorization to Construct may subject the Permittee to an enforcement action by the Division in accordance with North Carolina General Statute 143-215.6A to 143-215.6C. The issuance of this Authorization to Construct 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 Seth Robertson, P.E. at telephone number (919) 707-9175. Sincerely, Thomas A. Reed-r kp:sr cc: C. Todd Johnson, P.E., Hazen and Sawyer, 4011 WestChase Blvd., Suite 500, Raleigh, NC 27607 Davidson County Health Department DWR Winston-Salem Regional Office, Water Quality Section DWR, Point Source Branch, NPDES Program Ken Pohlig, P.E. ATC File