NC0000311_Permit (Modification)_20010420

•
�F NA7 ) Michael F. Easley
Governor
rte' NCDENR William G. Ross,Jr., Secretary
North Carolina Department of Environment and Natural Resources
O Kerr T. Stevens, Director
Division of Water Quality
April 20,2001
Mr.Edwin E.Morrow
M-B Industries,Inc.
P.O.Box 1118
Rosman,North Carolina 28772
Subject: Modification of NPDES Permit
Permit NC0000311
M-B Industries,Inc.
Transylvania County
Dear Mr.Morrow:
On April 2, 2001, a final permit for the subject facility became effective. On April 16, 2001, staff from the
Division'of Water Quality's Toxicology Unit requested a change to the toxicity requirements for the proposed new
groundwater remediation outfall 003. As a result,this permit has been modified such that you must perform a chronic'
toxicity test at outfall 003 in March, June, September and December. You are still required to perform an
acute toxicity test at outfall 001 in March,June,September and December. Please see Parts A.(4.) and A(5.)of
the modified permit for more information.
Please find enclosed the revised permit pages. The revised pages should be inserted into your permit. The old
pages may then be discarded. All other terms and conditions.contained in the original permit remain unchanged and in
frill effect. This permit modification:is issued under the requirements of North Carolina General Statutes 143-215.1'and L^
the Memorandum of Agreement between North Carolina and the U.S.Environmental Protection Agency. •
If any parts,measurement frequencies or sampling requirements contained in this permit 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 a written petition conforming to Chapter 150B of the North Carolina General Statutes,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.
If you have any questions concerning this permit modification,please contact Natalie Sierra at(919)733-5083,
extension 551.
Sincerely,
err T. Stevens
cc: Asheville Regional Office/Water Quality Section
NPDES Unit
Aquatic Toxicology Unit
Point Source Compliance and Enforcement Unit
N.C.Division of Water Quality/NPDES Unit Phone:[phone]
1617 Mail Service Center,Raleigh,NC 27699-1617 fax:[phone]
Internet:h2o.enr.state.nc.us DENR Customer Service Center:1 800 623-7748

•
Permit NC0000311
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful
standards and regulations promulgated and adopted by the North Carolina Environmental
Management Commission, and the Federal Water Pollution Control Act, as amended,
M-B Industries, Inc.
•
is hereby authorized to discharge wastewater from a facility located.at the
M-B Industries Wastewater Treatment Plant
• U.S. Highway 64
West of Rosman
Transylvania County
to receiving waters designated as the West Fork French Broad River in the French
Broad River Basin
in accordance with effluent limitations, monitoring requirements, and other
conditions set forth in Parts I, II, III and IV hereof.
This permit shall become effective June 1, 2001.
This permit and authorization to discharge shall expire at midnight on August 31, 2005.
Signed this day April 20, 2001.
err T. Stevens, Director
Division of Water Quality
By Authority of the Environmental Management Commission

Permit N00000311
SUPPLEMENT TO PERMIT COVER SHEET
M-B Industries is hereby authorized to:
1. Continue to operate an existing 0.030 MGD physical/chemical treatment facility
for the treatment of metal fabrication wastewater (001) and to discharge non-
contact cooling water (002) from facilities located at M-B Industries, Inc., U.S.
Highway 64, west of Rosman in Transylvania County, and
2. After obtaining an Authorization to Construct (ATC) from the Division of Water
Quality, operate a 0.1 MGD groundwater remediation system for the treatment
and discharge of contaminated groundwater through outfall 003.
L.
3. Discharge from said treatment works at the location specified on the attached
map into West Fork French Broad River, which is classified C-Trout HQW waters
in the French Broad River Basin.

•
Permit NC0000311
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - FINAL
During the period beginning on the effective date of this permit and lasting until expiration, the Permittee is
authorized to discharge from outfall 001-METAL FINISHING. Such discharges shall be limited and
monitored by the Permittee as specified below:
EFFLUENT LIMITSMONITORING REQUIREMENTS
CHARACTERISTICS
Monthly Average Daily Maximum Measurement Sample Type Sample
Frequency Location1
Flow 0.030 MGD Weekly Instantaneous Influent or Effluent
Total Suspended Solids 31.0 mg/L 60.0 mg/L Weekly Grab Effluent
Oil and Grease 26.0 mg/L 52.0 mg/L Weekly Grab Effluent
Phenols 2/Month Grab Effluent
Temperature(°C)2 Weekly Grab Effluent,
Upstream,
Downstream
Total Toxic Organics(TTO)3 2.13 mg/L 2/Month Grab Effluent
Acute Toxicity' Quarterly ` Compobi.e Effluent
Cadmium • 0.240 mg/L 2/Month _ Grab Effluent
Chromium - 1.71 mg/L 2.77 mg/L 2/Month Graf; Effluent
Nickel 2.38 mg/L 3.98 mg/L 2/Month Grab Effluent _
Copper 2.07 mg/L 3.38 mg/L 2/Month Grab Effluent
Cyanide 0.65 mg/L 1.20 mg/L 2/Month Grab _ Effluent
Lead 0.43 mg/L 0.69 mg/L 2/Month Grab _ Effluent
Silver 0.24 mg/L 0.43 mg/L 2/Month _ Grab Effluent
Zinc 1.48 mg/L 2.61 mg/L 2/Month Grab _ Effluent
• The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units
and shall be monitored weekly at the effluent by grab sample.
There shall be no discharge of floating solids or visible foam in other than trace
amounts.
1 Sample Locations: Upstream-Upstream 50 feet, Downstream- Downstream 50 feet.
2 The temperature of the effluent shall be such as not to cause an increase in the temperature of the
receiving stream of more than 0.5°C and in no case cause the ambient water temperature to exceed
20°C.
3 In lieu of monitoring for TTO, the permittee may submit the following certification statement: Based
on my inquiry of the person or persons directly responsible for managing compliance with the permit
limitation for total toxic organics, I certify that, to the best of my knowledge and belief, no dumping of
concentrated toxic organics into the wastewater has occurred since the filing of the last discharge
monitoring report.
4 Whole Effluent Toxicity will be assessed using the Acute Toxicity (Fathead Minnow) Pass/Fail at
90% test. See part A.(4.).

•
Permit NC0000311
A. (2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - FINAL
During the period beginning on the effective date of this permit and lasting until expiration, the
Permittee is authorized to discharge from outfall 002- NON-CONTACT COOLING WATER ONLY.
Such discharges shall be limited and monitored by the Permittee as specified below:
'EFFLUENT LIMITS'' MONITORING`REQUIREMENlTS
CHARACTERISTICS
Monthly Average Daily Maximum Measurement Sample Type Sample
Frequency _ Location1
Flow Semi-annually Estimate Effluent
Temperature,ad Semi-annually Grab Effluent
Total Residual Chlorine2 Semi-annually Grab Effluent
THERE SHALL BE NO CHROMIUM, ZINC, OR COPPER ADDED TO THE COOLING
WATER EXCEPT AS PRE-APPROVED ADDITIVES TO BIOCIDAL COMPOUNDS
The pH shall not be less than 6.0 standard units nor greater than 9.0 standzcd units.
There shall be no discharge of floating solids or visible foam in other than t ace
amounts. _ ._ •
•
i The temperature of the effluent shall be such as not to causean increase in the tempt-;tore of the
- receiving stream of more than 0.50C and in no case cause the ariibient water temperatur' to exceed
_.... 200C ... - -
2 Monitoring requirements only apply if chlorine is added to the treatment system. Discharges shall
be required to meet-a daily maximum discharge limitation of 17
The permittee shall obtain authorization from the Division of Water Quality prior to utilizing
any biocide in the cooling water.

Permit NC0000311
A. (3.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - FINAL
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 monitored by the Permittee as specified below:
EFFLUENT __ LIMITS MONITORING'REQUIrREMENTS
CHARACTERISTICS
Monthly Weekly Daily Measurement Sample Sample
Average Average Maximum Frequency Type Location
- Flow 0.10 MGD Continuous Recording Effluent
- Cyanide Quarterly Grab Effluent
Cadmium 2 ug/L 2/Month Grab Effluent
Chromium 1022 ug/L 2/Month Grab Effluent
Zinc 2/Month . Grab Effluent
Arsenic _ Quarterly Grab Effluent _
Lead 34 ug/L 2/Month Grab Effluent
Selenium Quarterly Grab Effluent
:a Silver :' Quarterly Grab Effluent
Cis-1,2 dichioroethene Quarterly Grab Effluent
Trlchioroethene;.. -" ` _- -'' ` 21Month .Grab Efflueni
Tetrachloroethene _ 2/Month Grab Effluent —
Chloride , Quarterly Grab _ Effluent
t Chronic Toxicity ' ` `' ' Quarterly Composite Effluert
The pH shall not be less thap 6.0 standard units nor greater than 90 standard units _
_andshall be monitored weekly at the effluent by grab sample.
r
There shall be no discharge of floating solids or.visible foam in other than trace
amounts.
Notes:
1 Whole Effluent Toxicity will be assessed using the Chronic Toxicity at 0.55% test. See part A.(5.).

•
Permit NC0000311
A. (4.) ACUTE TOXICITY PASS/FAIL LIMIT (Quarterly)
The permittee shall conduct acute toxicity tests on a quarterly basis 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 during 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, DWQ Form AT-2 (original) is to be sent to the following address:
Attention: North Carolina Division of Water Quality
Environmental Sciences Branch
1621 Mail Service Center
Raleigh, North Carolina 27699-1621 •
- Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Branch 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 ifi 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
- •Y` 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
�. .
;1, . required, the permittee will completeCthe information located at the top of the aquatic toxicity (AT)
test form indicating the-facility narif" , permit number, pipe number, County, and the month/year cf
- - the report with the notation of"No Flow" in the comment area of the form. The report shall be
submitted to the Environmental Sciences Branch 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 Quality 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.
A. (5.) CHRONIC TOXICITY LIMIT (Quarterly)
The effluent discharge shall at no time exhibit observable inhibition of reproduction or
significant mortality to Ceriodaphnia dubia at an effluent concentration of 0.55%.
The permit holder shall perform at a minimum, quarterly monitoring using test procedures outlined
in the "North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised February 1998,

Permit NC0000311
or subsequent versions or"North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure"
(Revised-February 1998) or subsequent versions. The tests will be performed during the months
of March,June, September, and December. Effluent sampling for this testing shall be performed
at the NPDES permitted final effluent discharge below all treatment processes.
If the test procedure performed as the first test of any single quarter results in a failure or ChV below
the permit limit, then multiple-concentration testing shall be performed at a minimum, in each of the
two following months as described in "North Carolina Phase II Chronic Whole Effluent Toxicity Test
Procedure" (Revised-February 1998) or subsequent versions.
The chronic value for multiple concentration tests will be determined using the geometric mean of the
highest concentration having no detectable impairment of reproduction or survival and the lowest
concentration that does have a detectable impairment of reproduction or survival. The definition of
"detectable impairment," collection methods, exposure regimes, and further statistical methods are
specified in the "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised-
February 1998) or subsequent versions.
All toxicity testing results required as part of this permit condition will be entered on the Effluent
Discharge Monitoring Form (MR-1) for the months in which tests were performed, using the
parameter code TGP3B for the pass/fail results and THP3B for the Chronic Value. Additionally, DWQ
Form AT-3 (original) is to be sent to the following address:
• Attention: North Carolina Division of Water Quality
Environmental Sciences Branch
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
•
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Branch no
later than 30 days after the end of the reporting period for which the reportis made.
Test data' shall be complete, accurate, include all supporting,chemical/physical measurements and • '
all conce4itration/response data, and be certified by laboratory supervisor and ORC or approved
designate signature. 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 Branch at the address cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required,
monitoring will be required during the following month.
Should any test data from this monitoring requirement or tests performed by the North Carolina
Division of Water Quality 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, minimum control organism reproduction, 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.
A. (6.) BIOCIDE CONDITION
The permittee shall not use any biocides except those approved in conjunction with the permit
application. The permittee shall notify the Director in writing not later than ninety (90) days prior to
instituting use of nay additional biocide used in cooling systems which may be toxic to aquatic life
other than those previously reported to the Division of Water Quality. Such notification shall include
completion of Biocide Worksheet From 101 and a map locating the discharge point and receiving
stream.

Re:MB Industries outfall 003
•
Subject: Re: MB Industries outfall 003
Date: Mon, 16 Apr 2001 15:53:17-0400
From: Kristie Robeson<[e-mail]>
To:Natalie Sierra<[e-mail]>
Should be a chronic test at 0.55%. The IWC I get is 0.55 so under the
permitting strategy that puts them in the chronic category. Check my math
but I plugged in 27.9(7Q10) , 0.1 (PF) , and got 0.55 for the IWC.
Natalie Sierra wrote:
> Forgot to ask - should it still be an acute test?
> Kristie Robeson wrote:
> > This permit issued 4/2/01 and I think 003 has the wrong type of tox
> > test. This outfall was not included in their draft and they may not
> > have known about it when the draft issued, I don 't know. I'm assuming
> > the receiving stream 7Q10 is the same as 001 which is 27. 9cfs. The
> > permitted flow at 003 is 0.10MGD. I come up with an IWC of 0.55, which
> > would give them a chronic test at 0.554. Let me know if I'm missing
> > something here.
> > Thanks.
1 of 1 4/16/01 4:44 PM

MB Industries outfall 003
Subject: MB Industries outfall 003
Date: Mon, 16 Apr 2001 12:46:40 -0400
From: Kristie Robeson<[e-mail]>
To:Natalie Sierra<[e-mail]>
This permit issued 4/2/01 and I think 003 has the wrong type of tox
test. This outfall was not included in their draft and they may not
have known about it when the draft issued, I don't know. I'm assuming
the receiving stream 7Q10 is the same as 001 which is 27.9cfs. The
permitted flow at 003 is 0.10MGD. I come up with an IWC of 0.55, which
would give them a chronic test at 0.55%. Let me know if I'm missing
something here.
Thanks.
1 of 1 4/16/01 4:44 PM