NC0025071_Authorization to Construct_19891220

Q 1 qc K Boo k cc�
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
NVilliam W. Cobey, Jr., Secretary
R. Paul Wilms
Director
December 20, 1989
Mr. Steve Routh, City Manager
City of Eden
350 West Stadium Drive
Eden, N. C. 27288-3299
Subject: Permit No. NC0O25O71
Authorization to Construct
City of Eden
Mebane Bridge WWTF
Sludge Lagoon
Rockingham County
Dear Mr. Routh:
� A letter of request for an Authorization to Construct was received on September 27, 1989,
�
by the Division and final plans and specifications for the subject project have been reviewed and
fund to be satisfactory. Authorization is hereby granted for the construction of a new sludge
lagoon (approximately 300 ft. by 140 ft.) with an influent structure, a drain structure to existing
sludge lagoon No. 1, a control structure, approximately 116 linear feet of 8-inch gravity sewer
line, a decant structure, and all other appurtenances to serve the Mebane Bridge Wastewater
Treatment Facility with the discharge of treated wastewater into the Dan River in the Roanoke
River Basin.
no
This Authorization to Construct is issued in accordance with Part IH paragraph B of
NPDES Permit No. NCOO25O71 issued August 1, 1985, and shall be subject to revocation unless
the wastewater treatment facilities are constructed in accordance with the conditions and limitations
specified in Permit No. NCO025071.
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 Pemrittee 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.
Pollution Prevention Pays
P.O. Box 27687, Raleigh, NortVCarolina 27611-7687 Telephone [phone]
An Equal Opportunity Affkmative Action Employer

The Winston-Salem Regional Office, phone no. 919/761-2351, shall be notified at least
t4%\ 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.
Prior to beginning waste disposal operations, two monitor wells, one upgradient and one
downgradient, must be installed to monitor groundwater quality. The location and construction
details for these wells must be approved by the Winston-Salem Regional Office, from which a
well construction permit must be obtained.
The monitor wells must be sampled initially after construction (and prior to waste disposal
operations) and thereafter every March, July, and October for the following parameters:
Nitrate (10.0) Ammonia Nitrogen
Total Dissolved Solids (500.0) Total Organic Carbon
pH (6.5-8.5 standard units) Water Level *
Chloride (250.0) Total Coliforms (1/100 ml.)
*The measurement of water level must be made prior to sampling for the remaining
parameters.
The numbers in parentheses represent the maximum allowable concentrations in
groundwater for the various analytical parameters, as specified in 15 NCAC 2L [Groundwater
Classifications and Standards]. Unless otherwise noted, the concentrations are expressed as
milligrams per liter.
If TOC concentrations greater than 10 mg/1 are detected in any downgradient monitoring
well, additional sampling and analysis must be conducted to identify the individual constituents
comprising this TOC concentration. If the TOC concentration as measured in the background
monitor well exceeds 10 mg/l, this concentration will be taken to represent the naturally occurring
TOC concentration. Any exceedances of this naturally occurring TOC concentration in the
downgradient wells shall be subject to the additional sampling and analysis as described above.
The results of the sampling and analysis shall be sent to the N.C. Division of
Environmental Management on Form GW-59 (Compliance Monitoring Report Form) every April,
August, and November.

The Compliance Boundary delineated on the attached site plan for the disposal system is
�' specified by regulations in 15 NCAC 24, Groundwater Classifications and Standards. An
exceedance of Groundwater Quality Standards beyond the Compliance Boundary is subject to
penalty provisions applicable under General Statute 143-215.6(1)a. The sale of property, by the
Permittee, which is within or contiguous to the disposal system site may alter the location of the
Compliance Boundary.
For facilities permitted on or after December 30, 1983, the Compliance Boundary is
established at the lesser of 250 feet from the sludge storage lagoons, or 50 feet within the property
boundary.
If the title to any property which may affect the location of the Compliance Boundary is
changed, the permittee shall notify the Division Director within 14 days. The Director shall then
establish a modified Compliance Boundary which will be done as a modification to the Permit.
The REVIEW BOUNDARY delineated on the attached site map for the disposal system is
specified by regulations in 15 NCAC 2L, Groundwater Classifications and Standards. A
REVIEW BOUNDARY is established around disposal systems midway between the Compliance
Boundary and the perimeter of the waste disposal area. When the concentration of any substance
equals or exceeds the maximum allowable concentration of that substance at the REVIEW
BOUNDARY, as determined by monitoring, the permittee shall either (i) demonstrate, through
predictive calculations or modeling, that natural site conditions, facility design and operational
controls will prevent a violation of standards at the Compliance Boundary; or, (ii) submit a plan for
the alteration of existing site conditions, facility design or operational controls that will prevent a
violation of standards at the Compliance Boundary, and implement that plan upon its approval by
the Director.
The interior surfaces of the lagoon shall be completely lined with a 60 -mil thick HDPE
liner. Following installation and inspection of the lagoon liner, and prior to waste disposal
operations, certification of the liner's compliance with approved construction specifications and the
liner's integrity must be provided to the Division of Environmental Management, Groundwater
Section, by the project engineer.
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 143-215.6.
The issuance of this Authorization to Construct does not preclude the
complying with any- and all statutes, rules, regulations, or ordinances which ma
other government agencies (local, state, and federal) which have jurisdiction.
i
y
Permittee from
be imposed by

001� One (1) set of approved plans and specifications is being forwarded to you. If you have
any questions or need additional information, please contacir,Randy Jones, telephone number
919/733-5083.
i'-
Sincerely,
R. Paul Wilms
V
cc: Rockingham County Health Department
Winston-Salem Regional Office
Training and Certification Unit
Groundwater Section
Finkbeiner, Pettis, & Strout, Ltd.
Permit No. NC0025071
Authorization to Construct
December 20, 1989
Engineer's Certification
I, , 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, 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 construction such that the construction was observed to be built within substantial
compliance and intent of the approved plans and specifications.
1-00*11 Signature
Date
Registration