NC0000311_Technical Correction to Permit_20170901

ROY COOPER
Govemot
s;. MICHAEL S. REGAN
beuelaiy
S. JAY ZIMMERMAN
Du ecru,
Water Resources
ENVIRONMENTAL QUALITY
September 1, 2017
Mr. Edwin Morrow
M -B Industries, Inc.
P.O. Box 1118
Rosman, NC 28772-1118
Subject: Technical correction to NPDES Permit NC0000311
M -B Industries
Forsyth County
Dear Mr. Morrow:
The Division recently issued the subject permit. A review of the final permit noted a typographical
error on page 5 of 10, in section I. A. (3.). The three chemical compounds listed in the table that end with
"ethane" should end with "ethene" instead. This modification is issued to correct the error, pursuant to the
requirements of North Carolina General Statute 143-215.1 and the Memorandum of Agreement between
North Carolina and the U.S. Environmental Protection Agency dated October 15, 2007 (or as subsequently
amended). Insert the attached page into your permit and discard the old page.
This modified permit includes the following changes to page 5 of 10:
➢ Tetrachloroethene replaces Tetrachloroethane.
➢ Trichloroethene replaces Trichloroethane
➢ Cis -1,2 dichloroethene replaces Cis -1,2 dichloroethane.
If any parts, measurement frequencies or sampling requirements contained in this modification are
unacceptable to you, you have the right to an adjudicatory hearing upon written request within thirty (30)
days following receipt of this letter. This request must be in the form of a written petition, conforming to
Chapter 150B of the North Carolina General Statutes, and filed with the Office of Administrative Hearings
(6714 Mail Service Center, Raleigh, North Carolina 27699-6714). Unless such demand is made, this
decision shall be final and binding.
This permit is not transferable except after notice to the Division. The Division may require
modification or revocation and reissuance of the permit. This permit does not affect the legal requirements
to obtain other permits which may be required by any other Federal, State, or Local governmental
regulation. If you have any questions concerning this matter, please contact Dr. Sergei Chernikov at (919)
807-6386 or via e-mail [[e-mail]].
Sincerely,
�D?aymme0nf��xector
of Water Resources
cc: Central Files Asheville Regional Office / Danny Smith NPDES Unit
State of North Carolina I Environmental Quality I Water Resources
1617 Mail Service Center I Raleigh, NC 27699-1617
919 807 6300 919-807-6389 FAX
https://deq nc.gov/about/divisions/water-resources/water-resources-pennits/wastewater-branch/npdes-wastewater-permits

Permit NC0000311
A. (3.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B .0400 et seq., 02B .0500 et seq ]
During the period beginning on the effective date of this permit and lasting until expiration, the Permittee is
authorized to discharge from outfall 003 - GROUNDWATER REMEDIATION Such discharges shall be limited
and momtored2 by the Permittee as specified below
EFFLUENT
CHARACTERISTICS
LIMITS
MONITORING REQUIREMENTS
Monthly Weekly
Average Average
Daily
Maximum
Measurement Sample
Frequency Type
Sample
Location
Flow
0.10 MGD
Continuous Recording
Effluent
Cis -1,2 dichloroethene, g/L
Quarterly Grab
Effluent
Trichloroethene, /L
Quarterly Grab
Effluent
Tetrachloroethene, N /L
Quarterly Grab
Effluent
Total Chromium
Quarterly Grab
Effluent
Chronic Toxicity'
Quarterly Grab
Effluent
H
Between 6 0 and 9 0 S.U.
Weekly Grab
Effluent
Notes:
1.. Whole Effluent Toxicity shall be assessed using the Chronic Toxicity at 0.55% test See part
A. (5 ).
2 The permittee shall submit Discharge Monitoring Reports electronically using NC DWR's
eDMR application system. Please See Special Condition A. (7.).
There shall be no discharge of floating solids or visible foam in other than trace
amounts.
Page 5of10

Permit NC0000311
A. (4.) ACUTE TOXICITY PASS/FAIL LIMIT (Quarterly)
[15A NCAC 02B .0200 et seq.]
The permittee shall conduct acute toxicity tests on a quarterlbasis using protocols defined in the
North Carolina Procedure Document entitled "Pass/Fail Methodology for Determining Acute Toxicity
In A Single Effluent Concentration" (Revised -July, 1992 or subsequent versions). The monitoring
shall be performed as a Fathead Minnow (Pimephales promelas) 24 hour static test. The effluent
concentration at which there may be at no time significant acute mortality is 90% (defined as
treatment two in the procedure document). Effluent samples for self-monitoring purposes must be
obtained during representative effluent discharge below all waste treatment. The tests will be
performed dunng the months of March, June, September and December.
All toxicity testing results required as part of this permit condition will be entered on the Effluent
Discharge Monitoring Form (MR -1) for the month in which it was performed, using the parameter
code TGE6C. Additionally, DWR Form AT -2 (original) is to be sent to the following address:
Attention: North Carolina Division of Water Resources
Water Sciences Section
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Water Sciences Section no later than
30 days after the end of the reporting period for which the report is made.
Test data shall be complete and accurate and include all supporting chemical/ physical
measurements performed in association with the toxicity tests, as well as all dose/response data.
Total residual chlorine of the effluent toxicity sample must be measured and reported if chlorine is
employed for disinfection of the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is
required, the permittee will complete the information located at the top of the aquatic toxicity (AT)
test form indicating the facility name, permit number, pipe number, county, and the month/year of
the report with the notation of "No Flow" in the comment area of the form. The report shall be
submitted to the Environmental Sciences Section at the address cited above.
Should any single quarterly monitoring indicate a failure to meet specified limits, then monthly
monitoring will begin immediately until such time that a single test is passed. Upon passing, this
monthly test requirement will revert to quarterly in the months specified above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required, then
monthly monitoring will begin immediately until such time that a single test is passed. Upon
passing, this monthly test requirement will revert to quarterly in the months specified above.
Should any test data from either these monitoring requirements or tests performed by the North
Carolina Division of Water Resources indicate potential impacts to the receiving stream, this permit
may be re -opened and modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum
control organism survival and appropriate environmental controls, shall constitute an invalid test
and will require immediate follow-up testing to be completed no later than the last day of the month
following the month of the initial monitoring.
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