NC0047597_Authorization to Construct_19880726

State of North Carolina
Department of Natural Resources and Community Development
Division of Environmental Management
512 North Salisbury Street • Raleigh, North Carolina 27611
James G. Martin, Governor
S. Thomas Rhodes, Secretary July 26, 1988
Hr. Orville Powell, City Manager
City of Durham
101 City Hall Plaza
Durham, North Carolina 27701
ATTENTION: Mr. Terry Rolan
".'"°'`4 R. Paul Wilms
Jo E�+t Director
T
JUL .8
,ry
SUBJECT: City of Durham
Permit No. NC0047597
Authorization to Construct
Wastewater Treatment Facilities
Farrington Road
EPA Project No. C370380-08
Dear Mr. Powell:
The final plans and specifications for the subject project have been
reviewed and found to be satisfactory.
Authorization is hereby granted for the construction and operation of
modifications and additions to the existing 10 MGD wastewater treatment
plant with no increase in plant capacity by the addition of chemical and
biological phosphorus removal and sludge dewatering equipment to consist of
a 10 MGD phosphorous removal tank and aerated distribution channel; a 10 MGD
dual media,.traveling bridge, automatic backwash effluent filter; and alum
storage facility with dual 10,500 gallon storage tanks, a 120 gph feed
pump and shelter; a 30 foot diameter reactor clarifier; an 855 gpm reactor
clarifier with two (2) pumps; a belt filter press facility with dual 2 meter
belt filter presses, three (3) 60 to 200 gpm belt filter press feed pumps, a
7832 square foot 2-story belt press building; a 63,500 gallon sludge blend
tank, a 200 gpm sludge transfer pump, and a polymer storage, mixing and feed
system; sludge stockpile area; and associated site work, yard piping and
electrical work.
Do not proceed with construction until the Authorization -to -Award
package, EEO, and MBE documentation/certification have been reviewed, and
you are in receipt of our approval, if Federal funding is desired for
project construction.
Pollution Prevention Pays
P.O. Box 27687, Raleigh, North Carolina 27611.7687 Telephone [phone]
An Equal Opportunity Affirmative Action Employer

The permittee shall employ an actively State certified fiede wastewater
of
treatment plant operator to be in resmustlholdcaavalid State Certificate of
treatment facilities. Such operator
thegrade at least equivalent to the classification assigned
esito the a new
the Certification
wastewater treatment facilities by � thnew
o
chief operator must be obtained to be in responsihleti arge cetse ructicn of
facilities, it is required that this be done y
the facilities is 50% complete.
The Auth
orization -to -Construct is issued in accordance with 9SrtaIIII,
Para raph C of NPDES Permit No. NC0047597, issued September 10,
1
g
shallies
subject to revocation unless the wastewater treatmeficationsnt t
areconstructed
and
re in accordance with the approved plans, specifications,
supporting Ling documents; and are in compliance with the conditions and
limitations specified in Permit Igo. NC0047597.
The p
ermittee shall have an acceptable sludge analysis ind on afsludgeh
E.P. toxicity analysis which have been approved by the Divfs
t Branch prior to the disposal of any sludge
Services, Solid Waste ManagemenCopies of .the analyses., supporting
from the new wastewater treatment plant.
documents, and approvals shall be submitted to the Division of Environmental
Management's Water Quality Section and the Raleigh Regional Off
The Ralcigg
h Regional Office, telephone number [phone]oshall be
notified at least twenty-four (24) hours inadvance
canfbepmade of said system
eration he
subject facilities so that an in -place inspection
to operation. Such notification to the Regional Water Quality
litym until
prior P the normal office hours
Supervisor shall be made during excluding State holidays.
5:00 p.m. on Monday through Friday,
In the
event the facilities fail to perform satisfactorilyinu meeting
it's NPDES Permit effluent limits, the City of Durhamishaii tikeschluding
immediate corrective actions as may be requiredby
thsthe constructio
n of additional wastewater treatment and disposal facilities.
The sludge stockpile area may
be constructed with a clay liner
consisting
of a minimum of two (2) feet in total thickness i stalled in
lifts of six (6) inches or less, withbeCmsec
hft being providedcompacted tthat a suitable
a
protective cover is installed and
permeability of no greater than IXmaintained to insure the integrity of the
liner.
During the
construction of the proposed additions/modificatists, the
permittee shall continue to properly maintain and operate the
such a
as
wa
stewater treatment facilities at all times, and iiea13nPDESer, aermit.
necessary to comply with the effluent -limits specsed in th
nded that it is mandatory for the project to be
constructed
You are toms
in ac
cordance with the North Carolina. Sedimentation Pollution a Control
Act,
the
and, when a licable, the NorthCarolina
theacontractor's responsibilities
specifications must clearly state
shall be in complying with these Acts.

The selling or free distribution of wet, dried, composted sludge or
sludge -like materials from wastewater facilities without prior review and
approval by this Division is illegal.
One (1) set of final approved plans and specifications is to be
forwarded to you, one (1) set to the Environmental Protection Agency (EPA),
and one (1) set to the Corps of Engineers.
If you have any questions or need additional information, please
contact Mr. Bill Hoffman, at [phone].
Sincerely,
R. Paul Wilms
BG:vk
cc: Hazen and Sawyer, P.C.
Mr. Coy Batten
Mr. Arthur Mouberry
CE - Raleigh
EPA
Mr. Bobby Blowe
Ms. Brenda Chesson
Mr. Bennie Goetze, Jr.
Mr. John Campbell
EMU
GPF