NC0024911_authorization to construct_19900816

State of North Carolina
Department of Environment, Health and Natural Resources
Division of Environmental Management
512 North Salisbury Street • Raleigh, North Carolina 27611
James G. Martin, Governor George T.Everett, Ph.D.
William W. Cobey, Jr., Secretary Director
August 16, 1990
Mr. William H. Mull, P.E.
Engineer-Manager
Metropolitan Sewerage District of Buncombe County
P.O. Box 8969
Asheville,NC 28814
Subject: Permit No. NCO024911
Authorization to Construct
Metropolitan Sewerage District of
Buncombe County
Wastewater Treatment Facility Improvements
Buncombe County
Dear Mr. Mull
A letter of request for an Authorization to Construct was received June 4, 1990 by the
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. an intermediate pumping
station consisting of three hydraulically driven, variable speed vertical mixed flow completely
submersible 24,300 GPM, 200 hp pumps; four Envirex, Inc. intermediate clarifiers measuring 33
feet 6 inches wide by 134 feet long,each provided with 16 equally sized effluent cells designed to
provide uniform rise rates and uniform upflow along the full tank length and equipped with two
longitudinal sludge collectors; an intermediate wastewater pumping station equipped with six
vertical non-clog heavy duty, 500 GPM, 15hp sewage pumps for sludge pumping; and one
intermediate effluent box with sluice gates to the existing final microscreen influent channel and the
existing chlorine contact chamber influent channel.
This Authorization to Construct is issued in accordance with Part III paragraph D of
NPDES Permit No. NCO024911 issued June 15, 1989 and shall be subject to revocation unless
the wastewater treatment facilities are constructed in accordance with the conditions and limitations
specified in Permit No. NCO024911
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 Environmental
Management.
Pollution Prevention Pays
P.O. Box 27687,Raleigh,North Carolina 27611-7687 Telephone [phone]
An Equal Opportunity Affirmative Action Emil wer

Permit No. NCO024911
Authorization to Construct
Metropolitan Sewerage District of Buncombe County
Page 2
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.
The Asheville Regional Office,phone no. [phone], shall be notified at least forty-
eight (48) hours in advance of operation of the installed facilities so that an in-place 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 the Permits and Engineering Unit,
P.O. Box 27687, Raleigh, NC 27611.
The Permittee shall employ a certified wastewater treatment plant operator to be in
responsible charge of the wastewater treatment facilities. The operator must hold a certificate of the
grade at least equivalent to the classification assigned to the wastewater treatment facilities by the
Certification Commission. Within thirty days after the wastewater treatment facilities are 50%
complete, the Permittee must submit a letter to the Certification Commission which designates the
operator in responsible charge.
A copy of the approved plans and specifications shall be maintained on file by the Perminee
for the life of the facility.
Failure to abide by the requirements contained in this Authorization to Construct may
subject the Permittee to an enforcement action by the Division of Environmental Management in
accordance with North Carolina General Statute 143-215.6.
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 Mr. Dana Bolden, telephone number
9191733-5083.
Si cerely,
dY!
George T. Ever
cc: Buncombe County Health Department
Asheville Regional Office
Training and Certification Unit
Hendon Engineering Associates, Inc.