NC0039420_Authorization to Construct_19940805

State of,,North Carolina
Department of Environment,
Health and Natural Resources m • �
Division of Environmental Management
James B. Hunt, we Governor p E
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
August 5, 1994
Earl T. Robb
Commonwealth of Virginia
Department of Transportation
1401 East Broad Street
Richmond, Virginia 23219
Subject: Permit No. NCO039420
Authorization to Construct
Virginia DOT I-77 Rest Area
Wastewater Treatment Facility
Surry County
Dear Mr Robb:
A letter of request for an Authorization to Construct was received April 25, 1994 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 additional wastewater treatment facilities at the
subject site consisting of a 10,000 gallon aeration basin, 3-way flow splitter box, a clarifier. chamber with
a minimum' of 1667 gallons, a surface loading rate of 167 gpd/ft2 and a weir overflow rate of 1667 gpd/ft,
an airlift sludge return system, a scum skimmer with return, a froth control system, an aerated sludge
holding tank with a minimum volume of 267 cubic feet, six aeration blower units capable of delivering 160
cfm at 5 psi, two control panels, a chlorine contact tank with a minimum volume of 209 gallons and
gaseous chlorine diffuser located at the farthest feasible point in the water flow from the discharge point of
the tank, a continuous recording effluent flow meter, a soda ash feed system and all necessary pipes,
fittings, valves and appurtenances with discharge of treated wastewater into Naked Run in the Lumber
River Basin.
The Division has concerns that turbulence in the reaeration tank may hinder accurate flow
measurement. If such is the case, the permittee shall be required to modify the method, structure or
devices used in flow measurement such that accurate measurement is obtained.
This Authorization to Construct is issued in accordance with Part III, Paragraph A of NPDES
Permit No. NCO039420 issued June 30,.1994, and shall be'subject to revocation unless the wastewater
treatment facilities are constructed in accordance with the conditions and limitations specified in Permit No.
NC0039420.
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.
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.
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled(10% post -consumer paper

Permit No. NC0039420
Airdiorization to Construct
Virginia Department of Transportation
August 5, 1994
Page 2
The Winston-Salem Regional Office, telephone number 910/896-7007, 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 29535, Raleigh, NC
27626-0535.
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 Title 15A, Chapter 8A, .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 of Title 15A, Chapter 8A, .0202. Once the facility is classified, the Permittee must
submit a letter to the Certification Commission which designates the operator in responsible charge within
thirty days after the wastewater treatment facilities are 50% complete.
A copy of the approved plans and specifications shall be maintained on file by the Permittee 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 143-215.6A 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 Sean Goris, telephone number 919/733-5083.
Sincerely,
Preston ard, Jr., P.E.
cc: Surry County Health Department
Winston-Salem Regional Office, Water Quality
Training and Certification Unit