NC0080071_Technical Correction_20150212

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NCDENR
North Carolina Department of Environment and Natural Resources
Pat McCrory Donald R.van der Vaart
Governor Secretary
February 12, 2015
E. Renee Ipok
Town of Vanceboro
P. O. Box 306
Vanceboro,NC 28586
Subject: Technical Correction of NPDES Permit
Permit NC0080071
Vanceboro WTP
Craven County
Class I
Dear Ms. Ipok:
The Division appreciate you notification of the invalid date reference in your recently issued
final permit NC0080071 A. (3) DISCHARGE ALTERNATIVES EVALUATION section. A
correction was made to show February 29, 2020 as the valid expiration date.
Enclosed is a technical corrected copy of the page that was impacted in NPDES Permit
NC0080071. Please replace the page in your current NPDES permit with this corrected page and
discard the removed page. This technical correction does not affect any other terms, conditions, or
compliance actions covered by the current permit.
If you have any questions concerning this permit technical correction, please contact Ron Berry
by phone [phone] or by email [e-mail].
Sincerely,
eon Berry
Engineer, Division of Water Resources
Attachments
Cc: Washington Regional Office/Water Quality Programs
Central Files
NPDES File
1617 Mail Service Center,Raleigh,North Carolina 27699-1617
Location:512 N.Salisbury St.Raleigh,North Carolina 27604
Phone:[phone] Fax:[phone]
Internet:www.ncdenr.gov
An Equal OpportunitylAffirmaive Action Employer

Permit NC0080071
A. (3) DISCHARGE ALTERNATIVES EVALUATION
[G.S. 143-215.3(a)(2)]
The Permittee shall assess potential alternatives to eliminate Whole Effluent Toxicity (WET) test
failures. This evaluation shall assess the feasibility of all the following alternatives:
1. Connect discharge to a WWTP: Determine whether the wastewater can be discharged to a
wastewater treatment plant. Approval or disapproval from the plant operator
should be acquired.
2. Obtain a Non-discharge permit: Eliminate the surface water discharge by obtaining a non-
discharge permit for spray irrigation, infiltration, or subsurface disposal (on-site
drainfield, infiltration gallery, injection wells).
3. Install Wastewater Treatment: Install improved wastewater treatment to enable the facility
effluent to consistently pass the WET test. If this is not technically feasible or
cost prohibitive,please explain and provide estimated costs.
4. Use Alternative Water Treatment Source: Obtain drinking water from another source (nearest
County, City, or Town or other wells) so the discharge or toxicity problem is
eliminated.
5. Use Alternative Water Treatment Method: Install alternative and/or innovative water treatment
methods or operational improvements that do not produce toxic wastewaters.
For example, install a recycle iron/manganese filtration system with no
discharge or combine discharge with WWTP or cooling water effluents.
6.Discharge to a Larger waterbodv/Perform a dilution model: Relocate the facility's discharge to
a larger receiving waterbody to eliminate or reduce toxic impacts to the
receiving waterbody given the increased dilution. If applicable, perform a
dilution model to receive allowance for stream dilution in WET test.
7. Combination of Alternatives: Employ any combination of the alternatives listed above that would
result in eliminating or decreasing toxicity until a more feasible solution
becomes available.
The evaluation shall include a present value of costs analysis for all technologically feasible options as
outlined in the Division's "Engineering Alternatives Analysis Guidance Document." This Document can
be found at: http://portal.ncdenr.org/web/wq/swp/ps/npdes/permits.
This evaluation is being requested to determine whether there are any economical and technologically
feasible alternatives available to the Permittee to address aquatic toxicity in the plant effluent. Based
upon the evaluation, please identify viable alternatives and present an implementation schedule and
project timeline for the preferred alternative. The Permittee shall submit the Discharge Alternatives
Evaluation to the Division along with the submission of their next permit renewal application (due 6
months prior to permit expiration on February 29, 2020)to:
NC DENR/Division of Water Resources/Water Quality Permitting
NPDES, Wastewater Branch
1617 Mail Service Center,Raleigh,NC 27699-1617
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