NC0079758_Regional Office Historical File Pre 2018 (3)

DwQ Po+rrs So,rce Fax :.9i 900764E
Airgas
National 'Neltfers
d ea n
1V1s., Sacleiea Now�l]
L7i.visi.orn of Water Quality
r— PEDES 1..TxA3t
1617 1viai1 Service f7eszter
Raleigh, 17c2 27699-1.617
Subject:
lie
Lae :ember 28, 2009
e1z,escindii g:tsiPJ3ES Wastewater Discharge pcarti
Airgas National Welders
Permit: 1,3C:0079758
E.7.ciairatiort
Auixgas .National VVe.lders (.P.irgas) is subrrtittirxg -this letter cf request to rescind their
Npi7 S Wzio.vtcvc.^atc t hDischax-ge Permit (1TC00 79"75'8), 'T"hc permit currently expires on
.1"i,rrie. 30„ 2010,
However, the facility is in the process of closixig the lithe pond that currcrttly discharges
into the waste:water,tre:atmeat pond for neutrali2ation_ Yfpon completion of the lithe pond
closure„ the facility plans to discontinue the wastewater txe atrrt ctit pond and eorrvert it tc, a,
ste.,rrn water cLi tcntioti pond. T1te facility will no longer d.i iiirge processed wastewater
to the offsite receieitxg stream., an, unnamed tributary to Taggart Creek,
isdrgas, therefore, requests that the wastewater disc+fii;ax'ge permit be res;,cix:zdead, effective
January 31, 2010, when construction of the new storm 'water detention pond is scheduled.
to conrrn -rtcc.
E"lcase rrpT y tlx y©eer apgarea n+-xct �w.t yr*v
70.4-543-3938 if you have any question
Sincerely,
e ..ia-g'a's "t"�Sxurtio:n.,al "i7e'eleirtrs
g t
F E
EI
E
A'FR LJALC'IY
i zCL Bt RANI

Michael F. Easley, Govern r
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W, Eh.limclti P. E. Director
Division of Water Quality
DIVISION OF WATER QUALITY
October 27, 2005
Jerrell Cook
National Welders Supply Co., Inc.
P.O. Box 31007
Charlotte, North Carolina 28231-6098
Subject: NPDES Permit. NC0479758
National Welders Supply Co.
Mecklenburg County
Dear Mr. Cook:
Our records indicate that NPDES Permit No. NC0079758 was issued on October 18,
2005 for the discharge of wastewater to the surface waters of the State from your facility. The
purpose of this letter is to advise you of the importance of the Permit and the liabilities in the
event of failure to comply with the terms and conditions of the Permit. If you have not already
done so, it is suggested that you thoroughly read the Permit. Of particular importance is Page 4.
Page 4 sets forth the effluent limitations and monitoring requirements for your
discharge. Your discharge must not exceed any of the limitations set forth. The section headed
"Monitoring Requirements" describes the measurement frequencies, sample types and sampling
locations. Upon commencement of your discharge (or operation), you must initiate the required
monitoring. The monitoring results must be entered on reporting forms furnished or approved by
this Agency. For new permits/facilities, the Division may supply an initial small stock of these
forms; however, if you fail to receive the forms, please contact this Office as quickly as possible.
The forms, including directions for their completion, and other important information are also
available at http://h2o.enr.state.nc*us/NPDES/docurnents.html. It is imperative that all applicable
parts be completed, and the original and one copy be submitted as required.
Please be advised that an annual fee may be required for your facility, if so, you will
receive a statement from our Raleigh Office. It is imperative that the fee be paid in a timely
manner so as to prevent enforcement action or possible revocation of your permit.
o
a lna
CO
N, C. Division of Water Quality, Mooresville Regional twice, 61.9 E. Center Ave, Suite 301, Mooresville NC 28115 (794) 663--1699 Customer Service
1-877-623-6748

The remaining parts of the Permit set forth definitions, general conditions and special
conditions applicable to the operation of wastewater treatment facilities and/or discharge(s). The
conditions include special reporting requirements in the event of noncompliance, bypasses,
treatment unitlprocess failures, etc. Also addressed are requirements for a certified wastewater
treatment plant operator if you are operating wastewater treatment facilities. Any changes in
operation of wastewater treatment facilities, quantity and type of wastewater being treated or
discharged, expansions and/or upgrading of wastewater treatment facilities must be permitted or
approved by this Agency.
To maintain compliance with discharge limitations, proper operation and maintenance of
a wastewater treatment facility and the development of a process control program are essential.
For those facilities having chlorine tablet disinfection, please be advised that chlorine tablets
approved for wastewater treatment use must be used; swimming pool tablets are not approved.
Also, be advised that DWQ staff need to have access to the facility's discharge point into the
receiving stream; please maintain a path along the outfall line to facilitate that access.
Failure to comply with the terms and conditions of an NPDES Permit subjects the
Permittee to enforcement action pursuant to Section 143-215.6 of the North Carolina General
Statutes. A civil penalty of up to $25,000 per violation (and/or criminal penalties) may be
assessed for such violations. If you find at any time that you are unable to comply with the terms
and conditions of the Permit, you should contact this Office immediately. A Special Order by
Consent (SOC) may be necessary while pursuing action to obtain compliance.
As a final note, an NPDES Permit is normally issued for a five-year period. Permits are
not automatically renewed. Renewal requests must be submitted to this Agency no later than 180
days prior to expiration. Please make note of the expiration date of your Permit. This date is set
forth on Page 1 of the Permit. Also note that NPDES Permits are not automatically transferable.
If you, as the Permittee, cease to need this Permit, then you should request that the Division of
Water Quality rescind the Permit or request that DWQ reissue the Permit to another party, if
necessary.
As mentioned previously, the purpose of this letter is to advise you of the importance of
your NPDES Permit. Please read the Permit and contact this Office at 704/663-1699 in
Mooresville if you have any questions or need clarification. We look forward to providing any
assistance.
Since
y,
D. Rex Gleason, P.E.
Surface Water Protection Regional Supervisor

NCDENR
Michael F. Easley
Governor
William G. Ross, ir,, Secretary
North Carolina Department of Environment and Natural Resources
October 21, 2005
Jerrell Cook
National Welders Supply Co. Inc.
P.O. Box 31007
Charlotte, North Carolina 28231-6098
Dear Mr. Cook:
el*c- 6iAitan 'w; Director
siki4tyitii.rolatity
°CT 2 7 2
A
Subject: NPDES Permit Issuance
Permit No. NC0079758
National Welders Supply Co.
Mecklenburg County
Division personnel have reviewed and approved your application for
renewal of the subject permit. Accordingly, we are forwarding the attached
NPDES discharge permit. This permit is issued 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 May 9, 1994 (or as subsequently amended).
The per-mit authorizes the National Welders Supply Co. to discharge up
to 0.0143 MGD of treated wastewater to UT Taggart Creek, a class C water in
the Catawba River Basin. The draft pei mit includes discharge requirements
and/or limitations for flow, total suspended solids (TSS), total copper, total
zinc, turbidity, pH and acute toxicity.
There have been no significant changes to this permit from the draft
noticed on August 31, 2005.
Quarterly effluent monitoring for lead has been deleted. A review of
monitoring data indicated that there is no reasonable potential for this
parameter to exceed the water quality standards and is no longer a
pararneter of concern.
The parameter, Total Suspended Residue, has been changed to Total
Suspended Solids.
If any parts, measurement frequencies or sampling requirements
contained in this permit are unacceptable to you, you have the right to an
adjudicatory hearing upon written request within thirty (30) days following receipt
N. C. Division of Water Quality / NPDES Unit Phone: [phone]
1617 Mail Service Center, Raieigh, NC 27699-1617 fax: [phone]
Internet: h2o.enr,state.nc,us DENR Customer Service Center: 1 800 623-7748

Letter to Jerrell Cook
Page 2
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 a demand is made, this permit shall be final and binding.
Please take notice that this permit is not transferable. 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
the Division of Water Quality, or permits required by the Division of Land.
Resources, Coastal Area Management Act, or any other Federal or Local
governmental permits may be required.
If you have any questions or need additional info' illation, please contact Ms.
Jacquelyn Nowell at telephone number [phone], extension 512.
Sincerely,.
SUSAN
Alan W. Klimek, P.E.
Attachments
cc: Mooresville Regional Office/ Surface Water Protection
Mooresville Regional Office/Aquifer Protection Section
Aquatic Toxicology Unit
Mecklenburg County
Central Files
Permit File

Permit No. NC0079758
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,
National Welders Supply Company
is hereby authorized to discharge wastewater from a facility located at
5313 Old Dowd Road
Charlotte, North Carolina
Mecklenburg County
to receiving waters designated as an unnamed tributary to Taggart Creek in the Catawba
River Basin in accordance with effluent limitations, monitoring requirements, and other
conditions set forth in Parts I, II, III, and IV hereof.
The permit shall become effective December 1, 2005
This permit and the authorization to discharge shall expire Anight on June 30, 2010.
Signed this day October 21, 2005,
ORIGINAL SIGNED BY
SUSAN A, VMS 01,,!.
Alan W. Klimek, P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission

'e i o. NC0079758
SUPPLE ENT TO ICE T CO R SHE
All previous NPDES Permits issued to this facility, whether for operation or
discharge are hereby revoked, and as of this issuance, any previously issued
permit bearing this number is no longer effective. Therefore, the exclusive
authority to operate and discharge from this facility arises under the permit
conditions, requirements, te s, and provisions included herein,
hereby authorized to:
Naon elders Supply Comp
y
Continue to operate the existing 0.0143 MGDwastewater treatment facility located
at 5313 Old Dowd Road, Charlotte, Mecklenburg County, and consisting of the
following treatment components:
A 1.5 acre lime storage pad,
Three (3) lime stony holding tanks,
Seepage collection pond,
Seepage treatment basin with CO2 neuraliation
. Discharge from said treatment works Ma Outfall 001) into an unnamed tributmy to
Taggart Creek, a Class C water in the Catawba River Basin, at the location specified
on the attached map.

Latitude: 35° 13' 34"
Longitude: 80° 55' 43"
USGS Quad #: G 15NIW
River Basin #: 03-08-34
Receiving Stream: UT Ta azi Creek
Stream Class: C
National Welders Supply Co..
Mecklenburg County
NC0079758

Permit No. NC0079758
A (1). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
Beginning on the effective date of this permit and lasting until expiration. the Perrnittee is authorized to discharge
treated wastewater from Outfall 001. Such discharges shall be limited and monitored by the Perrnittee as
specified below:
EFFLUENT
CHARACTERISTICS
Flow
EFFLUENT UMITATIO1
Monthly
Average
0.0143 MGD
Total Suspended Solids
30.0 mg/1
Weekly Daily
Average Maximum
45.0 mg/I
MONITORING REQITIREMENTS
Measurement
Frequency
Weekly
Sample
Type
Instantaneous
Sample
Location'
2/Month
Grab
pH2
Acute Toxicity3
Total Copper
Total Zinc
Weekly
al
Quarterly'
Quarterly4
Grab
Grab
Grab
Grab
E
E
E
Turbidity5
Weekly
Grab
U. D
Notes:
1. Sample locations: E- Effluent, U- Upstream, D- Downstream,
2. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
3. Acute Toxicity (Fathead Minnow, 24-hour) Monitoring, Annual; refer to Special Condition A (2).
4. Monitoring once, during each calendar quarter (Jan -March. Apr -June, July -Sept., Oct -Dec.).
5. The discharge shall not cause the turbidity of the receiving water to exceed 50 NTU. If the turbidity exceeds
these levels due to natural background conditions, the discharge cannot cause any increase in turbidity in the
receiving water.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

Permit No. NC0079758
SUPPLEMENT TO EFFLUENT LIMITATIONS
AND MONITORING REQUIREMENTS
SPECIAL CONDITIONS
A (2.) ACUTE TOXICITY MONITORING (ANNUAL)
The perniittee shall conduct annual toxicity tests using protocols defined as definitive in
E.P.A. Document EPA/600/4-90/027 entitled "Methods for Measuring the Acute Toxicity of
Effluents to Freshwater and Marine Organisms." The monitoring shall be performed as a
Fathead Minnow (Pin-tephales promelus) 24 hour static test. Effluent samples for self -
monitoring purposes must be obtained below all waste treatment. The permittee will conduct
one test annually, with the annual period beginning in January of the calendar year of the
effective date of the per mit. The annual test requirement must be performed and reported by
June 30. If no discharge occurs by June 30, notification will be made to the Division by this
date. Toxicity testing will be performed on the next discharge event for the annual, test
requirement.
The parameter code for this test is TAE6C. All toxicity testing results required as part of this
permit condition will be entered on the Effluent Discharge Form (MR-1) for the month in
which it was performed, using the appropriate parameter code. Additionally, DWQ Form AT-1
(original) is to be sent to the following address:
Attention: NC DENR / DWQ / Environmental Sciences Branch
1621 Mail Service Center
Raleigh, N.C. 27699-1621
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 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.

NPDES Permit Requirements
Page 1 of 16
ST
Section A. Deflntt
D
PART II
CONDITIONS FOR NPDES PERMITS
2/ Motath
Samples are collected twice per month with at least ten calendar days between sampling events.
3/Week
Sarnples are collected three times per week on three separate calendar days.
e Federal er Pollutic n Control Act, also known as the Clean Water Act, as amended, 33 USC 1251, et. seq.
Annual Average
The arithmetic mean of all "daily discharges"° of a pollutant measured during the calendar ye
conform, the geometric mean of such discharges.
Arithmetic Mean
The summation of the individual values divided by the number of individual values.
In the case of fecal
Bypass
The known diversion of waste streams from any portion of a treatment facility including the collection system, which
is not a designed or established or operating mode for the facility.
Calendar Day
The period from midnight of one day until midnight of the next day. However, for purposes of this permit, any
consecutive 24-hour period thatreasonably represents the calendar day may be used for sampling.
Calendar Quarter
One of the following distinct periods:
October through December.
n
through March, April through June, July through September, and
Composite Sample
A sample collected over a 24-hour period by continuous sampling or combining grab samples of at least 100 ml in
such a manner as to result in a total sample representative of the wastewater discharge during the sample period. The
Director may designate the most appropriate method (specific number and size of aliquots necessary, the time
interval between grab samples, etc.) on a case -by -case basis. Samples may be collected manually or automatically.
Composite samples may be obtained by the following methods.
(1) Continuous: a single, continuous sample collected over a 24-hour period proportional to the rate of flow.
(2) Constant time/variable volume: a series of grab samples collected at equal time intervals over a 24 hour
period of discharge and combined proportional to the rate of flow measured at the time of individual sample
collection, or
(3) Variable time/constant volume: a series of grab samples of equal volume collected over a 24 hour period
with the time intervals between samples determined by a preset number of gallons passing the sampling
point. Flow measurement between sample intervals shall be determined by use of a flow recorder and
totalizer, and the preset gallon interval between sample collection fixed at no greater than 1/24 of the
expected total daily flow at the treatment system, or
(4) Constant time/constant volume: a series of grab samples of equal volume collected over a 24-hour period at
a constant time interval. This method may only be used in situations where effluent flow rates vary
less than 15 percent. The grab samples shall be taken at intervals of no greater than 20 minutes apart
during any 24-hour period and must be of equal size and of no less than 100 milliliters. Use of this method
requires prior approval by the Director.
Version 6/20/2003

NPDES Permit Requirernents
Page 2 of IG
In accordance with (4) above, influent grab samples shall not be collected more than once per hour.
Effluent grab samples shall not be collected more than once per hour except at wastewater treatment systems
having a detention time of greater than 24 hours. In such cases, effluent grab samples may be collected at
intervals evenly spaced over the 24-hour period that are equal in number of hours to the detention time of the
system in number of days. However, the interval between effluent grab samples may not exceed six hours nor
the number of samples less than four during a 24-hour sampling period.
Continuous flow measurement
Flow monitoring that occurs without interruption throughout the operating hours of the facility. Flow shall be
monitored continually except for the infrequent times when there may be no flow or for infrequent maintenance
activities on the flow device.
Daily Discharge
The discharge of a pollutant measured during a calendar day or any 24 hour period that reasonably represents the
calendar day for purposes of sampling. For pollutants measured in units of mass, the "daily discharge" is calculated as
the total mass of the pollutant discharged over the day. The "daily discharge" concentration comprises the mean
concentration for a 24-hour sampling period as either a composite sample concentration or the arithmetic mean of all
grab samples collected during that period. (40 CFR 122.3)
Daily Mathnurn
The highest "daily discharge" during the calendar month.
Daily Sampling
Parameters requiring daily sampling shall be sampled 5 out of every 7 days per week unless otherwise specified in the
permit. The Division expects that sampling shall be conducted on weekdays except where holidays or other
disruptions of normal operations prevent weekday sampling. If sampling is required for all seven days of the week
for any permit parameter(s), that requirement will be so noted on the Effluent Limitations and Monitoring Page(s).
DWQ or "the Division:
The Division of Water Quality, Department of Environment and Natural Resources
EC
The North Carolina Environ
n
anaement Commission.
Facility Closure
The cessation of wastewater treatment at a permitted facility, or the cessation of all activities that require coverage
under the NPDES. Completion of facility closure will allow this permit to be rescinded.
Geometric Mean
The Nth root of the product of the individual values where N = the number of individual values. For purposes of
calculating the geometric mean, values of "0" (or "< [detection level]") shall be considered = 1.
Grab Sample
Individual samples of at least 100 mi collected over a period of time not exceeding 15 minutes. Grab samples can be
collected manually. Grab samples must be representative of the discharge (or the receiving stream, for instream
samples).
J-Iazardous Substance
Any substance designated under 40 CFR Part 116 pursuant to Section 311 of the Clean Water Act.
Instantaneous flow measgrrn nt
A measure of flow taken at the time of sampling, when both the sample and flow will be representative of the total
discharge.
Version 6 20/2©03

NPDES Permit Requirements
Page 3 of 16
Monthly Average (concentration Limit)
The arithmetic mean of all "daily discharges" of a pollutant measured during the calendar month. In the case of fecal
coliforrn, the geometric mean of such discharges.
Permit Issuing Authority
The Director of the Division of Water Quality
Quarterly Average (concentration limit)
The average of all samples taken over a calendar quarter.
Sevredaae
Substantial physical damage to property, damage to the treatment facilities which causes them to become inoperable,
or substantial and permanent loss of natural resources which can reasonably be expected to occur in the absence of a
bypass. Severe property damage excludes economic loss caused by delays in production.
Toxic Pollutant:
Any pollutant listed as toxic under Section 307(a)(1) of the Clean Water Act
Upsst
An incident beyond the reasonable control of the Perrnittee causing unintentional and temporary noncompliance with
permit effluent limitations and/or monitoring requirements. An upset does not include noncompliance caused by
operational error, improperly designed treatment facilities, inadequate treatment facilities, lack of preventive
maintenance, or careless or improper operation.
Weekly Average (concentration limit)
The arithmetic mean of all "daily discharges" of a pollutant measured during the calendar week. In the case of fecal
conform, the geometric mean of suchalscharges.
Section B. General Conditions
1. Duty to Comply
The Permittee must comply with all conditions of this permit. Any per-mit noncompliance constitutes a violation
of the Clean Water Act and is grounds for enforcement action; for permit termination, revocation and reissuance,
or modification; or denial of a permit renewal application [40 CFR 122.411.
a. The Perrnittee shall comply with effluent standards or prohibitions established under section 307(a) of the
Clean Water Act for toxic pollutants and with standards for sewage sludge use or disposal established under
section 405(d) of the Clean Water Act within the time provided in the regulations that establish these
standards or prohibitions or standards for sewage sludge use or disposal, even if the permit has not yet been
modified to incorporate the requirement.
b. The Clean Water Act provides that any person who violates section 301, 302, 306, 307, 308, 318 or 405 of the
Act, or any permit condition or limitation implementing any such sections in a permit issued under section
402, or any requirement imposed in a pretreatment program approved under sections 402(a)(3) or 402(b)(8)
of the Act, is subject to a civil penalty not to exceed $25,000 per day for each violation. [40 CFR 122.41 (a)
)1
c. The Clean Water Act provides that any person who negligently violates sections 301, 302, 306, 307, 308, 318, or
405 of the Act, or any condition or limitation implementing any of such sections in a permit issued under
section 402 of the Act, or any requirement imposed in a pretreatment program approved under section
402(a)(3) or 402(b)(8) of the Act, is subject to criminal penalties of $2,500 to $25,000 per day of violation, or
imprisonment of not more than 1 year, or both: In the case of a second or subsequent conviction for a
negligent violation, a person shall be subject to criminal penalties of not more than $50,000 per day of
violation, or by imprisonment of not more than 2 years, or both. [40 CFR 122.41 (a) (2)1
Version

NPDES Permit Requirements
.Page 4 of 16
d. Any person who knowinth, xiolates such sections, or such conditions or limitations is subject to criminal
penalties Of $5,000 to $50,000 per day of violation, or imprisonment for not more than 3 years, or both. In
the case of a second or subsequent conviction for a knowing violation, a person shall be subject to criminal
penalties of not more than $100,000 per day of violation, or imprisonment of not more than 6 years, or both.
[40 CFR 122.41 (a) (2)]
e. Any person who knowingly violates section 301, 302, 303, 306, 307, 308, 318 or 405 of the Act, or any permit
condition or limitation implementing any of such sections in a permit issued under section 402 of the Act,
and who knows at that time that he thereby places another person in imminent danger of death or serious
bodily injury, shall, upon conviction, be subject to a fine of not more than $250,000 or imprisonment of not
more than 15 years, or both., In the case of a second or subsequent conviction for a knowing endangerment
violation, a person shall be subject to a fine of not more than $500,000 or by imprisonment of not more than
30 years, or both. An or anon, as defined in section 309(c)(3)(B)(iii) of the CWA, shall, upon conviction
of violating the imminent danger provision, be subject to a fine of not more than $1„000,000 and can be fined
up to $2,000,000 for second or subsequent convictions. [40 CFR 122.41 (a) (2)]
Under state law, a civil penalty of not more than $25,000 per violation may be assessed against any person
who violates, or fails to act in accordance with the terms, conditions, or requirements of a permit. [North
Carolina General Statutes § 143-,215.6A1
g.
Any person may be assessed an administrative penalty by the Administrator for violating section 301, 302,
306, 307, 308, 318 or 405 of this Act, or any permit condition or limitation implementing any of such
sections in a permit issued under section 402 of this Act. Administrative penalties for Class I violations are
not to exceed $10,000 per violation, with the maximum amount of any Class 1 penalty assessed not to exceed
$25,000, Penalties for Class II violations are not to exceed $10,000 per day for each day during which the
violation continues, with the maximum amount of any Class II penalty not to exceed $125,000. [40 CFR
122.41 (a) (3)]
2, Duty to Mitigate
The Perrnittee shall take all reasonable steps to minimize or prevent any discharge or sludge use or disposal in
violation of this permit which has a reasonable likelihood of adversely affecting human health or the environment
[40 CFR 122,41 (d)].
3. Civil and Criminal Liability
Except as provided in permit conditions on "Bypassing" (Part II. C. 4), "Upsets" (Part II. C. 5) and "Power
Failures" (Part II. C. 7), nothing in this permit shall be construed to relieve the Permittee from any
responsibilities, liabilities, or penalties for noncompliance pursuant to NCGS 143-215.3, 143-215.6 or Section 309
of the Federal Act, 33 USC 1319. Furthermore, the Permittee is responsible for consequential damages, such as
fish kills, even though the responsibility for effective compliance may be temporarily suspended.
4. Oil and Hazardous Substance Liability
Nothing in this permit shall be construed to preclude the institution of any legal action or relieve the Perrnittee
from any responsibilities, liabilities, or penalties to which the Perrnittee is or may be subject to under NCGS 143-
215.75 et seq. or Section 311 of the Federal Act, 33 USG 1321. Furthermore, the Permittee is responsible for
consequential damages, such as fish kills, even though the responsibility for effective compliance rnay be
temporarily suspended.
5. Property Rights
The issuance of this permit does not convey any property rights m either real or personal property, or any
exclusive privileges, nor does it authorize any injury to private property or any invasion of personal rights, nor
any infringement of Federal, State or local laws or regulations [40 CFR 122.41 (g)1,
6. Onshore or Offshore Construction
This permit does not authorize or approve the construction of any onshore or offshore physical structures or
facilities or the undertaking of any work in any navigable waters.
Version 6/20/2003

NPDES Pemin Re inrements
Page 5 of 16
Severability
The provisions of this permit are severable, If any provision of this permit, or the application of any provision of this
permit to any circumstances,. is held invalid, the application of such provision to other circumstances, and the remainder
of this permit,. shall not be :affected thereby [NCGS 1.50B-23].
8. Duty to Provide Information
The Permittee shall furnish to the Permit Issuing Authority, within a reasonable time, any information which the
Permit Issuing Authority may request to determine whether cause exists for modifying, revoking and reissuing, or
terminating this perrnit or to determine compliance with this permit. The Perrnittee shall also furnish to the
Permit Issuing Authority upon request, copies of records required by this permit [40 CFR 122,41 (h)].
9, Duty to Reapply
If the Perrnittee wishes to continue an activity regulated by this permit after the expiration date of this permit, the
Permittee must apply for and obtain a new permit [40 CFR 122,41 (b)],
10 ExirationofPermit
The Perrnittee is not authorized to discharge after the expiration date. In order to receive automatic
authorization to discharge beyond the expiration date, the Permittee shall submit such information, forms, and
fees as are required by the agency authorized to issue permits no later than 180 days prior to the expiration date.
Any Permittee that has not requested renewal at least 180 days prior to expiration, or any Permittee that does not
have a permit after the expiration and has not requested renewal at least 180 days prior to expiration, will subject
the Permittee to enforcement procedures as provided in NCGS 143-215,6 and 33 USC 1251 et. seq.
11 Signatory Requirements
All applications, reports, or information submitted to the Permit Issuing Authority shall be signed and certified
[40 CFR 122,41 (10],
a. All permit applications shall be signed as follows:
(1) For a corporation: by a responsible corporate officer. For the purpose of this Section, a responsible
corporate officer means: (a) a president, secretary, treasurer or vice president of the corporation in
charge of a principal business function, or any other person who performs similar policy or decision
making functions for the corporation, or (b) the manager of one or more manufacturing, production, or
operating facilities, provided, the manager is authorized to make management decisions which govern the
operation of the regulated facility including having the explicit or implicit duty of making major capital
investment recommendations, and initiating and directing other comprehensive measures to assure long
term environmental compliance with environmental laws and regulations; the manager can ensure that
the necessary systems are established or actions taken to gather complete and accurate information for
permit application requirements; and where authority to sign documents has been assigned or delegated
to the manager in accordance with corporate procedures .
(2) For a partnership or sole proprietorship: by a general partner or the proprietor, respectively; or
(3) For a municipality, State, Federal, or other public agency: by either a principal executive officer or
ranking elected official [40 CFR 122.22].
b. All reports required by the permit and other information requested by the Permit Issuing Authority shall be
signed by a person described in paragraph a. above or by a duly authorized representative of that person. A
person is a duly authorized representative only if:
1. The authorization is made in writing by a person described above;
2. The authorization specified either an individual or a position having responsibility for the overall
operation of the regulated facility or activity, such as the position of plant manager, operator of a well or
well field, superintendent, a position of equivalent responsibility, or an individual or position having
overall responsibility for environmental matters for the company. (A duly authorized representative may
thus be either a named individual or any individual occupying a named position.); and
3. The written authorization is submitted to the Permit Issuing Authority [40 CFR 122.22]
Version 6/20/2003

NPDES Permit Requirements
Page 6 of 16
c. Changes to authorization: If an authorization under paragraph (b) of this section is no longer accurate
because a different individual or position has responsibility for the overall operation of the facility, a new
authorization satisfying the requirements of paragraph (b) of this section must be submitted to the Director
prior to or together with any reports, information, or applications to be signed by an authorized
representative [40 CFR 122.22]
d. Certification. Any person signing a document under paragraphs a. or b, of this section shall make the
following certification [40 CFR 122.22]:
"/ certify, under penalty of law, that this document and all attachments were prepared under my direction or
supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate
the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons
directly responsible for gathering the information, the information submitted is, to the best of my knowledge and
belief, true, accurate, and complete, 1 am aware that them are significant penalties for submitting false information,
including the possibility of fines and imprisonment for knowing violations,'
12. Permit .Actions
This permit may be modified, revoked and reissued, or terminated for cause, The filing of a request by the
Permittee for a permit modification, revocation and reissuance, or termination, or a notification of planned
changes or anticipated noncompliance does not stay any permit condition [40 CFR 122.41 (f)].
13. Perrpit Modification. Revocation and Reissuance, or Termination
The issuance of this permit does not prohibit the permit issuing authority from reopening and modifying the
permit, revoking and reissuing the permit, or terminating the permit as allowed by the laws, rules, and regulations
contained in Title 40, Code of Federal Regulations, Parts 122 and 123; Title 15A of the North Carolina
Administrative Code, Subchapter 2H .0100; and North Carolina General Statute 143-215.1 et. al.
14. Annual Administering and Compliance Monitoring Fee Requirements
The Permittee must pay the annual administering and compliance monitoring fee within thirty days after being
billed by the Division. Failure to pay the fee in a timely manner in accordance with 15A NCAC 2H.0105 (b) (4)
may cause this Division to initiate action to revoke the permit.
eetion C. Operation and Mainte ante f Pollution Conuols
1. Certified Operator
Upon classification of the permitted facility by the Certification Commission, the Permittee shall employ a
certified water pollution control treatment system operator in responsible charge (ORC) of the water pollution
control treatment system. Such operator must hold a certification of the grade equivalent to or greater than the
classification assigned to the water pollution control treatment system by the Certification Commission, The
Permittee must also employ one or more certified Back-up ORCs who possess a currently valid certificate of the
type of the system, Back-up ORCs rnust possess a grade equal to (or no more than one grade less than) the grade
of the system [15A NCAC 8G.0201].
The ORC of each Class I facility must:
Visit the facility at least weekly
Comply with all other conditions of A NCAC 8G.0204.
The ORC of each Class II, III and IV facility must:
• Visit the facility at least daily, excluding weekends and holidays
• Properly manage and document daily operation and maintenance of the facility
• Comply with all other conditions of 15.A NCAC 8G.0204.
Once the facility is classified, the Permittee shall submit a letter to the Certification Commission designating the
operator in responsible charge:
a. Within 60 calendar days prior to wastewater being introduced into a new system
Version 6I2O/2003

NPDES Permit Requirements
Page 7 of 16
b. Within 120 calendar days of:
Receiving notification of a change in the classification of the system requiring the designation of a
new ORC and back-up ORC
A vacancy in the position of ORC or back-up ORC.
2. Proper. Operation and Maintenance
The Permittee shall at all times provide the operation and maintenance resources necessary to operate the existing
facilities at optimum efficiency. The Permittee shall at all times properly operate and maintain all facilities and
systems of treatment and control (and related appurtenances) which are installed or used by the Permittee to
achieve compliance with the conditions of this permit. Proper operation and maintenance also includes adequate
laboratory controls and appropriate quality assurance procedures. This provision requires the Permittee to install
and operate backup or auxiliary facilities only when necessary to achieve compliance with the conditions of the
permit [40 CFR 122.41 (e)].
3. Need to Halt or_Reduce not a Defense
It shall not be a defense for a Permittee in an enforcement action that it would have been necessary to halt or
reduce the permitted activity in order to maintain compliance with the condition of this permit [40 CFR 122,41
(c)].
4. Bvnassrnsr
a. Bypass not exceeding o s [40 CFR 122.41 (m) (2)]
The Permittee may allow any bypass to occur which does not cause effluent limitations to be exceeded, but
only if it also is for essential maintenance to assure efficient operation. These bypasses are not subject to the
provisions of Paragraphs b, and c. of this section.
b. Notice [40 CFR 122.41 (m) (3)]
(1) Anticipated bypass. If the Permittee knovs in advance of the need for a bypass, it shall submit prior
notice, if possible at least ten days before the date of the bypass; including an evaluation of the
anticipated quality and effect of the bypass.
(2) Unanticipated bypass. The Permittee shall submit notice of an unanticipated bypass as required in Part
II. E. 6. (24-hour notice).
c. Prohibition of Bypass
(1) Bypass from the treatment facility is prohibited and the Permit Issuing Authority may take enforcement
action against a Permittee for bypass, unless:
(A) Bypass was unavoidable to prevent loss of life, personal injury or severe property damage;
(B) There were no feasible alternatives to the bypass, such as the use of auxiliary treatment facilities,
retention of untreated wastes or maintenance during normal periods of equipment downtime. This
condition is not satisfied if adequate backup equipment should have been installed in the exercise of
reasonable engineering judgment to prevent a bypass which occurred during normal periods of
equipment downtime or preventive maintenance; and
(C) The Permittee submitted notices as required under Paragraph b. of this section.
(2) Bypass from the collection system is prohibited and the Permit Issuing Authority may take enforcement
action against a Permittee for a bypass as provided in any current or future system -wide collection system
permit associated with the treatment facility.
(3) The Permit Issuing Authority may approve an anticipated bypass, after considering its adverse effects, if
the Permit Issuing Authority determines that it will meet the three conditions listed above in Paragraph c.
(1) of this section.
5. Upsets
a. Effect of an upset [40 CFR 122.41 (n) (2)]: An upset constitutes an affirmative defense to an action
brought for noncompliance with such technology based permit effluent limitations if the requirements of
paragraph b. of this condition are met. No determination made during administrative review of claims that
Version 6/20/2003

NPDES Permit Requirernents
Page 8 of 1G
noncompliance was caused by upset, and before an action for noncompliance, is final administrative action
subject to judicial review.
b. Conditions necessary for a demonstration of upset: A Permittee who wishes to establish the
affirmative defense of upset shall demonstrate, through properly signed, contemporaneous operating logs, or
other relevant evidence that:
(1) An upset occurred and that the Permittee can identify the cause(s) of the upset;
(2) The Permittee facility was at the time being properly operated; and
(3) The Permittee submitted notice of the upset as required in Part II, E. 6. (b) (13) of this permit.
(4) The Permittee complied with any remedial measures required under Part II. B. 2. of this permit.
d Burden of proof 140 CFR 122.41 (n) (4)1: The Permittee seeking to establish the occurrence of an
upset has the burden of proof in any enforcement proceeding.
RemovedS bstances
Solids, sludges, filter backwash, or other pollutants removed in the course of treatment or control of wastewaters
shall be utilized/disposed of in accordance with NCGS 143-215.1 and in a manner such as to prevent any pollutant
from such materials from entering waters of the State or navigable waters of the United States. The Permittee
shall comply with all existing Federal regulations governing the disposal of sewage sludge. Upon promulgation of
40 CFR Part 503, any permit issued by the Permit Issuing Authority for the utilization/disposal of sludge may be
reopened and modified, or revoked and reissued, to incorporate applicable requirements at 40 CFR 503. The
Permittee shall comply with applicable 40 CFR 503 Standards for the Use and Disposal of Sewage Sludge (when
promulgated) within the time provided in the regulation, even if the permit is not modified to incorporate the
requirement. The Permittee shall notify the Permit Issuing Authority of any significant change in its sludge use
or disposal practices.
7. Power Failures
The Permittee is responsible for maintaining adequate safeguards (as required by 15A NCAC 2H.0124 —
Reliability) to prevent the discharge of untreated or inadequately treated wastes during electrical power failures
either by means of alternate power sources, standby generators or retention of inadequately treated effluent.
Section D. Monitoring and Records
1. Representative Sarnplirig
Samples collected and measurements taken, as required herein, shall be characteristic of the volume and nature of
the permitted discharge. Samples collected at a frequency less than daily shall be taken on a day and tirne that is
characteristic of the discharge over the entire period the sample represents. All samples shall be taken at the
monitoring points specified in this permit and, unless otherwise specified, before the effluent joins or is diluted
by any other wastestrearn, body of water, or substance. Monitoring points shall not be changed without
notification to and the approval of the Permit Issuing Authority [40 CFR 122.41 (j)J.
2 Reporting
Monitoring results obtained during the previous month(s) shall be summarized for each month and reported on a
monthly Discharge Monitoring Report (DMR) Form (MR. 1, 1.1, 2, 3) or alternative forms approved by the
Director, postmarked no later than the 28th day following the completed reporting period.
The first DMR is due on the last day of the month following the issuance of the permit or in the case of a new
facility, on the last day of the month following the commencement of discharge. Duplicate signed copies of
these, and all other reports required herein, shall be submitted to the following address:
NC DENR / Division of Water Quality / Water Quality Section
ATTENTION: Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Version 6120/2003

NPDES Permit Requirements
Page 9 of 16
3, Flow Measurements
Appropriate flow measurement devices and methods consistent with accepted scientific practices shall be selected
and used to ensure the accuracy and reliability of measurements of the volume of monitored discharges. The
devices shall be installed, calibrated and maintained to ensure that the accuracy of the measurements is consistent
with the accepted capability of that type of device. Devices selected shall be capable of measuring flows with a
maximum deviation of less than 10% from the true discharge rates throughout the range of expected discharge
volumes. Flow measurement devices shall be accurately calibrated at a minimum of once per year and maintained
to ensure that the accuracy of the measurements is consistent with the accepted capability of that type of device,
The Director shall approve the flow measurement device and monitoring location prior to installation,
Once -through condenser cooling water flow monitored by pump logs, or pump hour meters as specified in Part I
of this permit and based on the manufacturer's pump curves shall not be subject to this requirement.
4. Test . rocedures
Test procedures for the analysis of pollutants shall conforrn to the EMC regulations (published pursuant to
NCGS 143-215.63 et. seq.), the Water and Air Quality Reporting Acts, and to regulations published pursuant to
Section 304(g), 33 USC 1314, of the Federal Water Pollution Control Act (as Amended), and 40 CFR 136; or in
the case of sludge use or disposal, approved under 40 CFR 136, unless otherwise specified in 40 CFR 503, unless
other test procedures have been specified in this permit [40 CFR 122.411.
To meet the intent of the monitoring required by this permit, all test procedures must produce minimum
detection and reporting levels that are below the permit discharge requirements and all data generated must be
reported down to the minimum detection or lower reporting level of the procedure. If no approved methods are
determined capable of achieving minimum detection and reporting levels below permit discharge requirements,
then the most sensitive (method with the lowest possible detection and reporting level) approved method must
be used.
5. Penalties for Tampering
The Clean Water Act provides that any person who falsifies, tampers with, or knowingly renders inaccurate, any
monitoring device or method required to be maintained under this permit shall, upon conviction, be punished by
a fine of not more than $10,000 per violation, or by imprisonment for not more than two years per violation, or
by both. If a conviction of a person is for a violation committed after a first conviction of such person under this
paragraph, punishment is a fine of not more than $20,000 per day of violation, or by imprisonment of not more
than 4 years, or both [40 CFR 122.41].
6, Records Retention
Except for records of monitoring information required by this permit related to the Permittee's sewage sludge
use and disposal activities, which shall be retained for a period of at least five years (or longer as required by 40
CFR 503), the Permittee shall retain records of all monitoring information, including
> all calibration and maintenance records
> all original strip chart recordings for continuous monitoring instrumentation
> copies of all reports required by this permit
> copies of all data used to complete the application for this permit
These records or copies shall be maintained for a period of at least 3 years from the date of the sample,
measurement, report or application. This period may be extended by request of the Director at any time [40 CFR
122.41],
7. Recording Results
For each measurement or sample taken pursuant to the requirements of this permit, the Pertnittee shall record
the following information [40 CFR 122.41]:
a. The date, exact place, and time of sampling or measurements;
b. The individual(s) who performed the sampling or measurements;
c. The date(s) analyses were performed;
d. The individual(s) who performed the analyses;
Version 6/20/2003

NPDES 'Permit Requirements
Page 10 of 16
e. The analytical techniques or methods used; and
f. The results of such analyses.
8. Inspect i nd Entry
The Permittee shall allow the Director, or an authorized representative (including an authorized contractor acting
as a representative of the Director), upon the presentation of credentials and other documents as may be required
by law, to;
a. Enter upon the Perrnittee's premises where a regulated facility or activity is located or conducted, or where
records must be kept under the conditions of this permit;
b. Have access to and copy, at reasonable times, any records that must be kept under the conditions of this
permit;
e. Inspect at reasonable times any facilities, equipment (including monitoring and control equipment), practices,
or operations regulated or required under this pern-iit, and
cl. Sample or monitor at reasonable times, for the purposes of assuring permit compliance or as otherwise
authorized by the Clean Water Act, any substances or pararneters at any location [40 CFR 122.41 (0].
Section E Repotting Requirements
L Change in Discharge
All discharges authorized herein shall be consistent with the terms and conditions of this permit. The discharge
of any pollutant identified in this permit more frequently than or at a level in excess of that authorized shall
constitute a violation of the permit.
2. Planned Changes
The Permittee shall give notice to the Director as soon as possible of any planned physical alterations or
additions to the permitted facility [40 CFR 122.41 (1)]. Notice is required only when:
a. The alteration or addition to a permitted facility may meet one of the criteria for new sources at 40 CFR
122.29 (b); or
b. The alteration or addition could significantly change the nature or increase the quantity of pollutants
discharged. This notification applies to pollutants subject neither to effluent limitations in the permit, nor to
notification requirements under 40 CFR 122.42 (a) (1).
c. The alteration or addition results in a significant change in the Permittee's sludge use or disposal practices,
and such alternation, addition or change may justify the application of permit conditions that are different
from or absent in the existing permit, including notification of additional use or disposal sites not reported
during the permit application process or not reported pursuant to an approved land application plan.
3. Anticipated Noncompliance
The Permittee shall give advance notice to the Director of any planned changes to the permitted facility or other
activities that might result in :noncompliance with the permit [40 CFR 122.41 (1) (2)].
4. Transfers
This permit is not transferable to any person except after notice to the Director. The Director may require
modification or revocation and reissuance of the permit to document the change of ownership. Any such action
may incorporate other requirements as may be necessary under the Clean Water Act [40 CFR 122.41 (1) (3)1,
5. Monitoring Rep rts
Monitoring results shall be reported at the intervals specified elsewhere in this pen [40 CFR 122.41 (1) (4)].
a. Monitoring results must be reported on a Discharge Monitoring Report (DMR) (See Part II. D. 2) or forms
provided by the Director for reporting results of monitoring of sludge use or disposal practices.
b. If the Permittee monitors any pollutant more frequently than required by this permit, the results of such
monitoring shall be included in the calculation and reporting of the data submitted on the DMR.
Version 6/2012003

NPDES Permit Requirements
Page 11 of 1 6
6. Twenty-four Hour Reporting
a. The Perrnittee shall report to the Director or the appropriate Regional Office any noncompliance that
potentially threatens public health or the environment. Any information shall be provided orally within 24
hours from the time the Permittee became aware of the circumstances. A written submission shall also be
provided within 5 days of the time the Permittee becomes aware of the circumstances, The written
submission shall contain a description of the noncompliance., and its cause; the period of noncompliance,
including exact dates and times, and if the noncompliance has not been corrected, the anticipated time it is
expected to continue; and steps taken or planned to reduce, eliminate, and prevent reoccurrence of the
noncompliance [40 CFR 122,41 (1) (6)1.
b. The Director may waive the written report on a case -by -case basis for reports under this section if the oral
report has been received within 24 hours,
c. Occurrences outside normal business hours may also be reported to the Division's Emergency Response
personnel at [phone], [phone] or [phone].
Other Noncompliance
The Perrnittee shall report all instances of noncompliance not reported under Part II, E. 5 and 6. of this permit at
the time monitoring reports are submitted, The reports shall contain the information listed in Part IL E. 6. of
this permit [40 CFR 122,41 (1) (7)},
8. Other Information
1X/here the Permittee becomes aware that it failed to submit any relevant facts in a permit application, or
submitted incorrect information in a permit application or in any report to the Director, it shall promptly submit
such facts or information [40 CFR 122.41 (I) (8)1,
9,
Noncompliance Notification
The Permittee shall report by telephone to either the central office or the appropriate regional office of the
Division as soon as possible, but in no case more than 24 hours or on the next working day following the
occurrence or first knowledge of the occurrence of any of the following:
a. Any occurrence at the water pollution control facility which results in the discharge of significant amounts of
wastes which are abnormal in quantity or characteristic, such as the dumping of the contents of a sludge
digester; the known passage of a slug of hazardous substance through the facility; or any other unusual
circum s tanc es .
Any process unit failure, due to known or unknown reasons, that render the facility incapable of adequate
wastewater treatment such as mechanical or electrical failures of pumps, aerators, compressors, etc.
c. Any failure of a pumping station, sewer line, or treatment facility resulting in a by-pass directly to receiving
waters without treatment of all or any portion of the influent to such station or facility.
Persons reporting such occurrences by telephone shall also file a written report within 5 days following first
knowledge of the occurrence.
10. Availability of Reports
Except for data determined to be confidential under NCGS 143-215.3 (a)(2) or Section 308 of the Federal Act, 33
USG 1318, all reports prepared in accordance with the terms shall be available for public inspection at the offices
of the Division of Water Quality. As required by the Act, effluent data shall not be considered confidential.
Knowingly making any false staternent on any such report may result in the imposition of criminal penalties as
provided for in NCGS 143-215.1 (b)(2) or in Section 309 of the Federal Act.
11. Penalties for Falsification Q f Reports
The Clean Water Act provides that any person who knowingly makes any false statement, representation, or
certification in any record or other document submitted or required to be maintained under this permit, including
monitoring reports or reports of compliance or noncompliance shall, upon conviction, be punished by a fine of
Version 6/20/2003

NPDES Permit Requirements
Page 12 of 16
not more than $25,000 per violation, or by imprisonment for not more than two years per violation, or by both
[40 CFR 122,41j.
12. Annual Performance Reports
Permittees who own or operate facilities that collect or treat municipal or domestic waste shall provide an annual
report to the Permit Issuing Authority and to the users/customers served by the Permittee (NCGS 143-215.1C).
The report shall summarize the perforrnance of the collection or treatment system, as well as the extent to which
the facility was compliant with applicable Federal or State laws, regulations and rules pertaining to water quality.
The report shall be provided no later than six' ty days after the end of the calendar or fiscal year, depending upon
which annual period is used for evaluation.
PART III
OTHER REQUIREMENTS
Section A. Construction
The Permittee shall not commence construction of wastewater treatment facilities, nor add to the plant's treatment
capacity, nor change the treatment process(es) utilized at the treatment plant unless the Division has issued an
Authorization to Construct (AtC) permit. Issuance of an AtC will not occur until Final Plans and Specifications for
the proposed construction have been submitted by the Permittee and approved by the Division.
Section B. Groundwater Mon'toring
The Permittee shall, upon written notice from the Director of the Division of Water Quality, conduct groundwater
monitoring as may be required to determine the compliance of this NPDES permitted facility with the current
groundwater standards.
Section C. Changes in Discharges of Toxic Substances
The Permittee shall notify the Permit Issuing Authority as soon as it knows or has reason to believe (40 CFR 122.42);
a, That any activity has occurred or will occur which would result in the discharge, on a routine or frequent
basis, of any toxic pollutant which is not limited in the permit, if that discharge will exceed the highest of the
following "notification levels";
(1) One hundred micrograms per liter (100 ug/L);
(2) Two hundred micrograms per liter (200 ug/L) for acrolein and acrylonitrile; five hundred micrograms
per liter (500 ug/L) for 2.4-dinitrophenol and for 2-methy1-4.6-dinitrophenol; and one milligram per liter
(1 mg/L) for antimony;
(3) Five times the maximum concentration value eported for that pollutant in the permit application.
b. That any activity has occurred or will occur which would result in any discharge, on a non -routine or
infrequent basis, of a toxic pollutant which is not limited in the permit, if that discharge will exceed the
highest of the following "notification levels";
(1) Five hundred micrograms per liter (500 ug/L);
(2) One milligram per liter (1 mg/L) for antimony;
(3) Ten times the maximum concentration value reported for that pollutant in the permit application.
Section D. Evaluation of Wastewater Discharge Alternatives
The Permittee shall evaluate all wastewater disposal alternatives and pursue the most environmentally sound
alternative of the reasonably cost effective alternatives. If the facility is in substantial non-compliance with the terms
and conditions of the NPDE- permit or governing rules, regulations or laws, the Permittee shall submit a report in
such form and detail as required by the Division evaluating these alternatives and a plan of action within 60 days of
notification by the Division.
Section E. Facility Closure Requirements
The Permittee must notify the Division at least 90 days prior to the closure of any wastewater treatment system
covered by this permit. The Division may require specific measures during deactivation of the system to prevent
Version 6,20/2003

NPDES Permit Requirements
Rage 13 of 16
adverse impacts to waters of the State. This permit cannot be rescinded while any activities requiring this permit
continue at the permitted facility.
PART IV
SPECIAL CONDITIONS FOR MUNCIPAL FACILITIES
Section A,. Publicly Owned Treatment Works (POTWO
AU POTNN/s must provide adequate notice to the Director of the following:
1. Any new introduction of pollutants into the POTW from an indirect discharger which would be subject to
section 301 or 306 of CWA if it were directly discharging those pollutants; and
2. Any substantial change in the volume or character of pollutants being introduced by an indirect discharger
as influent to that POTW at the time of issuance of the perrnit.
3. For purposes of this paragraph, adequate notice shall include information on (1) the quality and quantity of
effluent introduced into the POTW, and (2) any anticipated impact of the change on the quantity or quality
of effluent to be discharged from the POTW.
n B M
f P du 'al Us
1. Effluent limitations are listed in Part I of this permit. Other pollutants attributable to inputs from
industries using the municipal system may be present in the Permittee's discharge. At such time as
sufficient information becomes available to establish limitations for such pollutants, this permit may be
revised to specify effluent limitations for any or all of such other pollutants in accordance with best
practicable technology or water quality standards.
2 Under no circumstances shall the Permittee allow introduction of the following wastes in the waste
treatment system:
a. Pollutants which create a fire or explosion hazard in the POTW, including, but not limited to,
wastestreams with a closed cup flashpoint of less than 140 degrees Fahrenheit or 60 degrees
Centigrade using the test methods specified in 40 CFR 261.21;
b. Pollutants which will cause corrosive structural damage to the POTW, but in no case Discharges
with pH lower than 5.0, unless the works is specifically designed to accommodate such Discharges;
c, Solid or viscous pollutants in amounts which will cause obstruction to the flow in the POTW
resulting in Interference;
d. Any pollutant, including oxygen demanding pollutants (BOD, etc.) released in a Discharge at a flow
rate and/or pollutant concentration which will cause Interference with the POTW;
e. Heat in amounts which will inhibit biological activity in the POTW resulting in Interference, but in
no case heat in such quantities that the temperature at the POTW Treatment Plant exceeds 40°C
(104°F) unless the Division, upon request of the POTW, approves alternate temperature limits;
f Petroleum oil, nonbiodegradable cutting oil, or products of mineral oil origin in amounts that will
cause interference or pass through;
g. Pollutants which result in the presence of toxic gases, vapors, or fumes within the Po-rw in a
quantity that may cause acute worker health and safety problems;
h. Any trucked or hauled pollutants, except at discharge points designated by the POTW.
3, With regard to the effluent requirements listed in Part I of this permit, it may be necessary for the
Permittee to supplement the requirements of the Federal Pretreatment Standards (40 CFR, Part 403) to
ensure compliance by the Perrnittee with all applicable effluent limitations. Such actions by the Perrnittee
may be necessary regarding some or all of the industries discharging to the municipal system.
4. The Perrnittee shall require any industrial discharges sending influent to the permitted system to meet
Federal Pretreatment Standards promulgated in response to Section 307(b) of the Act. Prior to accepting
wastewater from any significant industrial user, the Permittee shall either develop and submit to the
Version 6/20/2003

NPDES Permit Requirements
Page 14 of IG
Division a Pretreatment Program for approval per I5A NCAC 2H .0907(a) or modify an existing
Pretreatment Program per 15A NCAC 2H .0907(b).
5. This permit shall be modified, or alternatively, revoked and reissued, to incorporate or mtodify an approved
POTW Pretreatment Program or to include a compliance schedule for the development of a POTW
Pretreatment Program as required under Section 402(b)(8) of the Clean Water Act and implementing
regulations or by the requirements of the approved State pretreatment program, as appropriate.
Section C. Pretreatment Programs
Under authority of sections 307(b) and (c) and 402(b)(8) of the Clean Water Act and implementing regulations 40
CFR Part 403, North Carolina General Statute 143-2'15.3 (14) andimplementing regulations 15A NCAC 2H
.0900, and in accordance with the approved pretreatment program, all provisions and regulations contained and
referenced in the Pretreatment Program Submittal are an enforceable part of this permit.
The Permittee shall operate its approved pretreatment program in accordance with Section 402(b)(8) of the Clean
Water Act, the Federal Pretreatment Regulations 40 CFR Part 403, the State Pretreatment Regulations 1SA
NCAC 2H .0900, and the legal authorities, policies, procedures, and financial provisions contained in its
pretreatment program submission and Division approved modifications there of. Such operation shall include
but is not limited to the implementation of the following conditions and requirements:
1. Sewer Use Ordina.rce (SUQ)
The Permittee shall maintain adequate legal authority to implement its approved pretreatment program.
. Industrial Waste Survey (JWS,`t
The Permittee shall update its Industrial Waste Survey ((WS) to include all users of the sewer collection
system at least once every five years.
4,
Monitoring Plan
The Permittee shall implement a Division approved Monitoring Plan for the collection of facility specific
data to be used in a wastewater treatment plant Headworks Analysis (HWA) for the development of
specific pretreatment local limits. Effluent data from the Plan shall be reported on the DMRs (as required
by Part II, Section D, and Section E.5.).
The Permittee shall obtain Division approval of a Headworks Analysis (HWA) at least once every five
years, and as required by the Division. Within 180 days of the effective date of this permit (or any
subsequent permit modification) the Permittee shall submit to the Division a written technical evaluation
of the need to revise local limits (i.e., an updated HWA or documentation of why one is not needed) [40
CFR 122.42). The Permittee shall develop, in accordance with 40 CFR 403.5(c) and 15A NCAC 2H .0909„
specific Local Limits to implement the prohibitions listed in 40 CFR 403.5(a) and (b) and 15A NCAC 2H.
.0909.
Industrial User_Pretreatrnent Pennits (IUP) & Allocation Tables
In accordance with NCGS 143-215.1, the Permittee shall issue to all significant industrial users, permits for
operation of pretreatment equipment and discharge to the Permittee's treatment works. These perrnits
shall contain limitations, sampling protocols, reporting requirements, appropriate standard and special
conditions, and compliance schedules as necessary for the installation of treatment and control
technologies to assure that their wastewater discharge will meet all applicable pretreatment standards and
requirements. The Permittee shall maintain a current Allocation Table (AT) which summarizes the results
of the Headworks Analysis (HWA) and the limits from all Industrial User Pretreatment Permits (IUP).
Permitted IUP loadings for each parameter cannot exceed the treatment capacity of the POTW as
determined by the HWA.

NPDES Permit Requirements
Page S cif l6
6. t.uthorizatiora to Construct (A tta C)
The Permittee shall ensure that an Authorization to Construct putt (AtC) is issued to all applicable
industrial users for the construction or modification of any pretreatment facility, Prior to the issuance of
an AtC, the proposed pretreatment facility and treatment process must be evaluated for its capacity to
comply with all Industrial User Pretreatment Permit (IUP) limitations.
7. POTW Inspection & Monitoring of their SIUs
The Permittee shall conduct inspection, surveillance, and monitoring activities as described in its Division
approved pretreatment: program in order to determine, independent of information supplied by industrial
users, compliance with applicable pretreatment standards. The Permittee must:
a. Inspect all Significant Industrial Users (S1Us) at least once per calendar year; and
b. Sample all Significant Industrial Users (SIUs) at least twice per calendar year for all permit -
limited pollutants, once during the period from January 1 through June 30 and once during the
period from July 1 through December 31, except for organic compounds which shall be sampled
once per calendar year;
S S1f Monitoring and: Reporting
The Permittee shall require all industrial uaers to comply with the applicable monitoring and reporting
requirements outlined in the Division approved pretreatment program, the industry's pretreatment permit,
or in 15A NCAC 2H .0908.
Enforcement RRsponse Plan (FRP)
The Permittee shall enforce and obtain appropriate reinedies for violations of all pretreatment standards
promulgated pursuant to section 307(b) and (c) of the Clean Water Act (40 CFR 405 et. seq.), prohibitive
discharge standards as set forth in 40 CFR 403.5 and 15A NCAC 2H .0909, and specific local limitations.
All enforcement actions shall be consistent with the Enforcement Response Plan (ERP) approved by the
Division.
10. Pretreatrnen t AnnualwR p arta((PAR)
The Perrnittee shall report to the Division in accordance with 15A NCAC 2FI .0908. In lieu of submitting
annual reports, Modified Pretreatment Programs developed under 15A NCAC 2H .0904 (b) may be
required to meet with Division personnel periodically to discuss enforcement of pretreatment requirements
and other pretreatment implementation issues.
For all other active pretreatment programs, the Perrittee shall submit two copies of a Pretreatment Annual
Report (PAR) describing its pretreatment activities over the previous twelve months to the Division at the
following address:
NC DENR / DWQ / Pretreatment Unit
1617 Mail Service Center
Raleigh, NC 27699-1617
These reports shall be sub according to a schedule established by the Director and shall contain the
following
Narrative
A brief discussion of reasons for, status of, and actions taken for all Significant Industrial
Users (SIUs) in Significant Non -Compliance (SNC);
A pretreatment program summary (PPS) on specific forms approved by the ision;
c.) igtuficant Non -Compliance nce eport (SNCR)
The nature of the violations and the actions taken or proposed to correct the violations on
specific forms approved by the Division;
d.) Industrial Data Summary Forms._(IDSF)

NPDES Permit Ilea uirements
Page 16 of 16
Monitoring data fro ttn samples collected by both the POTW and the Significant Industrial
User (STU). These analytical results must be reported on Industrial Data Summary Forms
(IDSF) or other specific format approved by the Division;
OtherInformation
Copies of the POTW's allocation table, new or modified enforcement compliance schedules,
public notice of SIUs in SNC, and any other information, upon request, which in the
opinion of the Director is needed to determine compliance with the pretreatment
implementation requirements of this pemvt;
11. Public. Notice
The Perrnittee shall publish annually a list of Significant Industrial Users (Sllls) that were in Significant
Non -Compliance (SNC) as defined in the Permittee°s Division approved Sewer Use Ordinance with
applicable pretreatment requirements and standards during the previous twelve month period. This list
shall be published within four months of the applicable twelve-month period.
12. R,ecorcj Keeping
The Permittee shall retain for a minimum of three years records of monitoring activities and results, along
with support information including general records, water quality records, and records of industrial impact
on the POTW.
14.
Funding and Financial Repo
The Permittee shall maintain adequate funding and staffing levels to accomplish the objectives
approved pretreatment program,
oelifications to the approved pretreatment program, including but not limited to local limits
modifications, POTW monitoring of their Significant Industrial Users (SIUs), and Monitoring Plan
modifications, shall be considered a permit modification and shall be governed by 15 NCAC 2H .0114 and
15A NCAC 2H .0907.

SOC PRIORITY PROJECT: NO
To: Permits and Engineering Unit
Water Quality Section
Attention: Jacquelyn Nowell
Date: February 21, 2005
NPDES STAFF REPORT AND RECOMMENDATIONS
County: Mecklenburg
NPDES Permit No.: NC0079758
MRO No.: 05-04
PART I - GENERAL INFORMATION
Facility and address: National Welders Supply Company, Inc.
5313 Old Dowd Road
Charlotte, NC 28208
2. Date of investigation: February 8, 2005
Report prepared by: B. Dee Browder, Environ. En
4. Person contacted and telephone number: Randy Miller, Regional Plant Manager,
[phone]
Alisa Williams (ORC), [phone]
Angelique Crews, Environmental
Specialist, Eagle Engineering, (704)882-
4222
5, Directions to site: From the junction of Billy Graham Parkway and Boyer Street in
west Charlotte, travel west on Boyer Street approximately 0.1 mile. Turn left onto
Old. Dowd Road. Travel approximately 0.2 miles on Old Dowd Road. National
Welders Supply will be located on the right (south) side of the road.
6. Discharge point(s), List for all discharge points: -
Latitude: 35' 13' 34"
Longitude: 80'° 55' 43"
Attach a USGS Map Extract and indicate treatment plant site and discharge point
on map. N/A
USGS Quad No.: G14NW Charlotte West

Page Two
7. Site size and expansion area consistent with application: Limited area available
for expansion.
8. Topography (relationship to flood plain included): Slopes range from 3 —8%. The
site is not located in a flood plain.
9. Location of nearest dwelling: There are no dwellings within 500 feet of the
facility. The Charlotte Douglas International Airport is located within 1000 feet
of the facility,
10. Receiving stream or affected surface waters: Taggart Creek
a. Classification: C
b. River Basin and Subbasin No.: Catawba 03-08-34
c. Describe receiving stream features and pertinent downstream uses: The
discharge enters a ditch that enters Taggart Creek. The tributary to
Taggart Creek had flow 18 inches wide and 2 inches deep at the time of
the site visit.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
a. Volume ofWastewater: 0.0143 MGD (Design Capacity)
b. What is the current permitted capacity: 0.0143 MGD
c. Actual Treatment Capacity of current facility (current design capacity): 0.0143 MGD
d. Dates and construction activities allowed by previous ATCs issued in the previous
two years: N/A
e. Description of existing or substantially constructed WWT facilities: The facility
consists of a 1.5 acre lime storage pad, three lime slurry holding tanks, one seepage
collection pond, followed by a treatment pond where carbon dioxide is added for pH
adjustment.
f. Description of proposed WWT facilities: N/A
g. Possible toxic impacts to surface waters: The pH is adjusted to prevent impact to the
receiving stream.
h. Pretreatment program: N/A.
2. Residuals handling and utilization/disposal scheme: The residuals associated with
this system are used for industrial wastewater treatment applications and as an
agricultural lime substitute.
a. If residuals are being land applied specify D Q Perrnit No.: N/A
Residuals contractor:
Telephone No.
b. Residuals stabilization: N/A

'
Page Three
c. Landfill: N/A
Treatment plant classification: No rating given
3 SIC Code(s): 2813 Wastewater Code(s): 31
4. MTU Code(s): 52000
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with construction grant funds or are any public
monies involved (municipals only)? No
2. Special monitoring or limitations (including toxicity) requests: None at this time.
Important SOC/JOC or compliance schedule dates: N/A
Submission of plans and specifications
Begin construction
Complete construction
4. Alternative analysis evaluation
a. Spray irrigation: N/A
b. Connect to regional sewer system:N/A
c. Subsurface: N/A
d. Other disposal options: N/A
PART IV - EVALUATION AND RECOMMENDATIONS
This facility manufactures acetylene gas, which is created by combining calcium carbide
with water. Calcium carbide is created by mixing carbon and limestone or quick lime.
The by-product of the creation of acetylene is a lime slurry that is utilized as a wastewater
treatment agent and agricultural lime product.
Please note that the last permit listed a lime slurry holding pond. This is actually a lime
holding pad. MRO recommends changing the description of this part of the system to a
lime holding pad, and adding the three lime slurry holding tanks.

Page Four
Lime in solution is placed on the pad but dries quickly. Any runoff associated with this
pad travels via ditching to the collection and treatment ponds. The dried pad material is
hauled via dump truck to agricultural receiving sites. Other lime slurry by-product is
contained in holding tanks prior to transport to several industrial facilities that use it for
process controls or wastewater treatment. Historically the record of the MRO office
indicate that suggestions were made to line the lagoon and also have the groundwaters of
the area evaluated for calcium hydroxide effects associated with the pad and holding
Lagoons. There is no evidence in our files that these items were pursued. There were no
groundwater wells identified in the area at the time of the MR0 site visit but there are
concerns that inert metals and other constiuents of the process could have some effect on
the surrounding groundwater.
The perm ittee is applying for renewal of the permit to discharge wastewater. It is
recommended that the permit be renewed pending evaluation by the Aquifer Protection
Section in regards to groundwater impacts associated with the facility.
Signature o Report Prepare
D. Rex Gleason,.E.
D
Z
Surface Water Protection Regional Supervisor
n: rr9 dsr
Date

North Cali
5
A Areal Cook
National Welders Supply C caw It e.
P.O. Box 31007
Charlotte, North Car lina 28231-6098
SubJect Receipt of
NPDES Permit
National Welders
Mecklenburg Coun
Dear . v'1r. Cook:
Michael F. Easley, Governor
'iilian G. Ross Jr., Sec eetaryY
Fluvirtuttncnt and Natural Resourc r
W. Klimek.. P.F. f)irector
'vision of Water Quality
applit anti
58
yt 0.
The NPDES Unit receivcxl your perrttit rene al application on. December 29, A member of the NPDES Unit
will review your application. They will contact yctu of additional information is to:mired to cnliete your permit renewaL You
should expect to receive a draft permit approximately 30-45 days before your existing pcnnit expires_ The requirements is
your misting permit wall remain in effect until the permit is renewed (or the Division takes other action).
If you have any additional clues renewal of the subject peanut, please contact nse at [phone],
extension 520.
Point Source Branch
cc: CENTRAL, FILES
Mooresville Regional Office/Water Quality
NPDES Unit
North Carolina Division of Wator Quality 1617 Mad Service Center kakviglti NC 27699-1617 Phone [phone] Customer Service
Internet h20.enrslate:nc.us 512 N. Salisbury Si Raksgh, NC 27604 FAX [phone]-R77-623-6748

MAJOR SUPPLIERS Or .CRYOGENICS AND WEL NHS EOLPPMENT
P 0, E3ox 31007
Charlotte, NO 6O4
PhDne '7041333-5475
Fax [phone]
December 23, 2004
Mr. Charles 11 Weaver, Jr.
NCDENR
Water Quality Section, NPI)ES Unit
1017 Mail Service Center
Raleigh, NC 27699-1617
RE: NT'DES Permit Renewal„Package
National Welders Supply Company
Charlotte, North Carolina
NPDES Permit No, NC0079758
Dear Mr, Weaver:
Enclosed please find the NPDES Permit Renewal Package for NationalNatona1 Wr1den. Supply
Company.
Enclosed in the NPDES pennit renewal package are the following;
• Completed application forms (Short Form (1)
• "No sludge or other solids" letter
Please note that National Welder Supply Company is currently operating with zero discharge and
recycles I 00°/0 of the lime slurry produced onsite,
If you have any questions, please contact me at (704) 4-3317 or our environmer a
URS Corporation at 704-522-0330.
Sincerely,
.nz 1 'Weide— Supply Comp
errell Cook
Manager -Compressed Gases
Enclosures

tate UT Norm uarolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Bill Holman, Secretary
Kerr T. Stevens, Director
Mr. Gerald S. Carver
NATIONAL 'WELDERS
P 0 Box 668804
Charlotte, North Carolina 28266
Dear Mr. Carver:
DENR
NORTH CAROLINA DEPARTMENT OF
RON M ENT AND NATURAL RESOURCES
June 16, 2000
Subject: Permit No. NCS000045
NATIONAL WELDERS
Mecklenburg County
In response toyour renewal application for continued coverage under NPDES stormwater
permit NCS000045, the Division of Water Quality (Division) is forwarding herewith the subject
state - NPDES permit. This permit is issued pursuant to the requirements of North Carolina
General Statute 143-215 .1 and the Memorandum of Agreement between North Carolina and the
US Environmental Protection agency dated December 6, 1983.
Please note that the Division has revised the analytical monitoring strategy for individual
stormwater permits. Based on a review of the permit monitoring data received to date, the
analytical monitoring measurement frequencies have been changed and cut-off concentrations
have been removed. These changes will be .implemented for all second term individual
stormwater permits with analytical monitoring requirements. For those permits with analytical
monitoring requirements, Part II - Monitoring, Controls, and Limitations for Permitted
Discharges has been modified to reflect the change in monitoring strategy.
The qualitative monitoring strategy remains the same as the first term of the perrnit.
Please note that the semi-annual qualitative monitoring is a requirement of the pemiit. Failure to
complete the monitoring as required is a violation of the permit and any permit noncompliance
constitutes a violation of the Clean Water Act. Reference Part III, Section A, Item 2 "Duty to
Comply", Item 9 "Penalties .for Tampering " and Item. 10 "Penalties for Falsification of Reports"
of your permit for further information.
If any parts, measurement frequencies or sampling requirements contained in this permit
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 1.50B of the North Carolina General Statutes, and filed
with the Office of Administrative Hearings, Post Office- Drawer 27447, Raleigh, North Carolina
27611 -7447. Unless such demand. is made, this decision shall be final and binding.
Please take notice this permit is not transferable. Part ill, B.2, addresses the requirements
to be followed in case of change in ownership or control of this discharge.
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Telephone [phone] FAX [phone]
An Equal Opportunity Atf¢rmative Action Employer 50% recycled! 10% post -consumer paper

rage 2,
Sincerely,
ORIGINAL SIGNED Y
WILLIAM C. MILS
fr Kerr T. Stevens
This permit does not affect the legal requirements to obtain other permits which may be
required by the Division of Water Quality or permits required by the Division of Land Resources,
Coastal Area Management Act or any other Federal or Local governmental permit that may be
required,
fl` you have any questions concernthis permit, please contact Bi1 Mills at telephone
number 19/7-0 ext. 548
cc: Mr. Roger 0, Pfaff, EPA,
Mooresville Regional Office
Stonnwater and General Permits Unit
Central Files

NCS000045
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATLLRAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE STORMWATER UNDER THE
NATIONAL, POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provisions of North Carolina General Statute 143-215.1, other lawful
standards and regulations promulgated and adopted by the North Carolina Environmental
154anagement Commission, and the Federal Water Pollution Control Act, as amended,
National Welders
is hereby authorized to discharge stormwater from a facility located at
5301 Old Dowd Road
Charlotte, NC
Mecklenburg County
to receiving waters designated as an unnamed tributary to Taggart Creek, a class C stream, in the
Catawba River Basin
in accordance with the discharge limitations, monitoring requirements, and other conditions set
forth in Parts I, II, III, IV, V and VI hereof,
This permit shall become effective July I, 2000.
This permit and the authorization to discharge shall expire at midnight on June 30, 2005.
Signed this day June 16, 2000.
ORIGINAL SIGNED BY
WILLIAM C. MILLS
for Kerr T. Stevens, Director
Division of Water Quality
By die Authority of the Environmental Management Comniission

TABLE T:TS
PART' Ii ITRODUCTION
Section A: Ind"
dual Permit Coverage
Section R: Permitted ActiF°ities
Lion C: Location Map
PART II MONITORING, CONTROLS, AND I wIITATIO S FOR ' RMJTTED
DISCHARGES
Section A:: Stormy^ater Pollution Prevention Plan
Section P: Quanta e Morntormg Require'
PART III STANDARD CONDITIO;S
Section A. Complianceand Liability
I. Compliance Schedule
2. Duty to Comply
3. Duty to Miti t
4, Civil and Criminal Liability
Oil and Hazardous SubstanceLiability
6. Property Rights
Severability
Duty to Provide formation
9. Penalties for Tampering
10. Penalties for Falsification of Repo
Section P General Conditions
Individual Permit Ex iration
Transfers
Signatory Requirements
Individual Permit Modifi Modification Revocation and Re i nuance, or
Termination

Section C:
5. Permit Actions
Permit No. NCS0000,45
Operation and Maintenance of Pollution Controls
I. Proper Operation and Maintenance
2. Need to Halt or Reduce Not a Defense
3. Bypassing of Sion -I -twitter Control Facilities
Section a Monitoring and Records
1. Representative Sampling
2, Recording Results
3. Flow Nleasureinents
4. Test Procedures
5. Representative Outfa11
6. Records Retention
7. Inspection. and Entry
Section E: Reporting Requirements
I. Discharge Monitoring Reports
2, Submitting Reports
3. Availability of Reports
4. Non-Stormwater Discharges
5. Planned Changes
6, Anticipated Noncompliance
7, Bypass
8. Twenty-four Hour Reporting
9, Other Noncompliance
JO. Other Infomiation
PART IV LIMITATIONS REOPENER
PART V ADMINISTERING A COMPLIANCE MONITORING FEE
REQUIREMENTS
PART VI DEFINITIONS
it

No NCS00004
PART I INTRODUCTION
SECTION A: I' `I I 'IDU L PERMIT COVERAGE
During the period beginning on the effective date of the permit and lasting until expiration, the
pe ittee is authorized to discharge stormwater associated with industrial actil, ty. Such
discharges: shall he controlled, limited and monitored as specified in this permit
SECTION B: PERMITTED ACTIVITIES
'IT'IE
Until this pertaaitexpires or is modified or revoked, the perrmttee is authorized to discharge
stormwater to the surface waters of North Carolina or separate storm sewer system which has
been adequately treated and managed in accordance with the terms and conditions of this
individual permit, All discharges shall be in accordance with the conditions of this permit,
point
non-storrnwatr discharge or is covered by another permit, authorization or approval,
discharge to surface waters of the state is prohibited unless it is an
This permit does not relieve the per ittee l`rorn responsihiltty for co .:. pliance with any other
tandard, ordinance, order, judgment, or decree.
applicable federal, state, or local law, rule,
Part 1 Page
0

• , , . , ....,
e.I4
. 1 -4_, ,..... • .. ,„
. , 4 ,W
• i'l,±-': „. * ' ' " ' f , =
\ '17,./:: ''!•.','• „,.
i.,.
• .„,,, „ , "..,. q , ( i=
r.;:,
1 )4 If II44'
, ) „„.00 • * 1 , *„."' 4))",..), ,...
, .4.4' ,,,„,,,, 4...„, ,4,4) '•,„ )),
..„""
=
: 1 -
1. /7
I d ,
. '
'
0,4
= ^
,p D
• DIr •
.......Th '- 7t..--":... ../.... ..!...,....„,
'" 'r..k .....
.......,,, .......,.., -,".
es"
ki
C1P e If; . .,' ..'' ...,
. . . .
.44." ..
• IA), \ „If ' -I-I, _ II') "II)44IIII, *),-,4
i
I - • 0)'A))-,,)) )
F
1 -8
, .
.!!- '
,
• 41
'41'4
/
fi
P 4
,(1
4
;17
lil
7.1
II/ /
,,,//,"" •
4444'0/7/
'

it No NCS000045
PART II MONITORING, CONTROLS, AND LIMITATIONS FOR
PERMITTED DISCHARGES
SECTION A: STORMWATER POLLUTION PREVENTION PLAN
The permittee shall develop a Stormwater Pollution Prevention Plan, herein after referred to as
the Plan. This Plan shall be considered public information in accordance with Part III, Standard
Conditions, Section E, Paragraph 3 of this individual permit, The Plan shall include, at a
minimum, the following items:
Site Plan, The. site plan shall provide a description of the physical facility and the
potential pollutant sources which may be expected to contribute to contamination of
stormwater discharges. The site p]an shall contain the following:
(a) A general location map (USGS quadrangle map or appropriately drafted
equivalent map), showing the facility's location in relation to transportation
routes and surface waters, the name of the receiving water(s) to which the
stormwater outfall(s) discharges, or if the discharge is to a municipal separate
storm sewer system, the name of the municipality and the ultimate receiving
waters; and accurate latitude and longitude of the point(s) of discharge.
(b) A narrative description of storage practices, loading and unloading activities,
outdoor process areas, dust or particulate generating or control processes, and
waste disposal practices.
c) A site map drawn to scale with the distance legend indicating location of
:industrial activities (including storage of materials, disposal areas, process areas
and loading and unloading areas), drainage structures, drainage areas for each
outfall and activities occurring in the drainage area, building locations, existing
BMPs and impervious sinfaces, and the percentage of each drainage area that is
impervious. For each outfall, a narrative description of the potential pollutants
which could be expected to be present in the stormwater discharge.
(d) A list of significant spills or leaks of pollutants that have occurred at the facility
during the 3 previous years and any corrective actions taken to mitigate spill
impacts.
(e) Certification that the stormwater autfalls have been evaluated for the presence of
non-stormwater discharges. The certification statement will be signed in
accordance with the requirements found in Part III, Standard Conditions, Section
-B, Paragraph 3„
Storinwater Management Plan. The stormwater management plan shall contain a
narrative description of the materials management practices employed which control or
minimize the exposure of significant :materials. to stormwater, including structural and
Part 11 Page 1 of 4

Permit No, NCS000045
nonstructural measures. The stormwater management plan, at a mini u , shall
incorporate the following:
(a)
Feasibility Study. A review of the technical and economic feasibility of changing
the methods of operations and/or storage practices to eliminate or reduce exposure
of materials and processes to stormwater. Wherever practical, the pennittee shall.
prevent exposure of all storage areas, material handling operations, and
manufacturing or fueling operations. In areas where elimination of exposure is
not practical, the stormwater management plan shall document the feasibility of
diverting the storrnwater runoff away from areas of potential contamination.
(b) Secondary Containment Schedule% A schedule to provide secondary containment
for bulk storage of liquid materials, storage ofSection 313 of fitle HI of the
Superfund Amendments and Reauthorization Act (SARA.) water priority
chemicals, or storage of hazardous substances to prevent leaks and spills from
contaminating stormwater runoff„ If the secondary containment devices are
connected directly to stormwater conveyance systems, the connection shall be
controlled by manually activated valves or other similar devices [which shall be
secured with a locking .mechanism] and any stormwater that accumulates in the
containment area shall be at a minimum visuallyobserved for color, 'foam, outfall
staining, visible sheens and dry weather flow, prior torelease of the accumulated
stormwater. Accumulated stormwater shall be released if found to be
uncontaminated .by the material stored within the containment area, Records
documenting the individual making the observation, the description of the
accumulated stormwater and the date and time of the release shall be kept for a
period of five years,
(G) BMIP Summary. A narrative description shall be provided of Best Management
Practices (B.N.IPs) to be considered such as, but not limited to, oil and grease
separation, debris control, vegetative filter strips, infiltrationand stormwater
detention or retention, where necessary„ The need for structural BMIPs shall be
based on the assessment of potential of sources to contribute significant quantities
of pollutants to stormwater discharges and data collected through monitoring of
stormwater discharges.
Spill Prevention and Response Plan, The Spill Prevention and Response Plan (SPRP)
shall incorporate an assessment of potential pollutant sources based on a materials
inventory of the facility„ Facility personnel (or team) responsible for im.plementing the
SPRP shall be identified. A responsible person shall be on -site at all times during facility
operations that have 'the, potential to contaminate stormwater runoff through spills or
exposure of materials associated with the facility operations. The SPRP must be site
stormwater specific. Therefore, a SPCC plan may be a component of the SPRP, but may.
not be sufficient to completely address the stormwater aspects of the SP.RP. The cornmon
elements of the SPCC with the SPRP may be incorporated by reference into the SPRP.
4. Preventative Maintenance and Good Housekeeping Program. A preventativc.
maintenance program shall be developed. The program, shall document schedules of
inspections and maintenance, activities of stormwater control systems, plant equipment
Part II Page 2 of 4

rermit No, fVLS000045
and systems. Inspection of material handling areas and regular cleaning schedules of
these areas shall be incorporated into the program..
5. Employee Training. Training schedules shall be developed and training provided at a
minimum on an annual basis on proper spill response and cleanup procedures and
preventative maintenance activities for all. personnel involved in any of the facility's
operations that have the potential to contaminate stormwater runoff. Facility personnel
(or team) responsiblefor implementing the training shall be identified,
Responsible Party. The Storrnwater Pollution Prevention Plan shall identify a specific
position(s) responsible for the overall coordination, development, implementation, and
revision to the Plan. Responsibilities for all components of the Plan shall he documented
and position assignments provided.
7 Plan Amendment. The permittee shall amend the Plan whenever there is a change in
design, construction, operation, or maintenance which has a significant effect on the
potential for the discharge of pollutants to surface waters. The Storrnwater Pollution
Prevention Plan shall he reviewed and updated on an annual basis,
The Director may notify the permitte.e when the Plan does not meet one or more of the
minimum requirements of the pemiit. Within 30 days of such notice, the permittee shall
submit a time schedule to the Director for modifying the Plan to meet minimum
requirements. The permittee shall provide certification in writing (in accordance with
Part 111, Standard Conditions, Section B, Paragraph 3) to the Director that the changes
have been made.
Facility.' Inspection Program. .Facilities are required to inspect all stormwatcr systems on
at !east a semiannual schedule, once in the fall (September -November) and once in the.
spring (April - June). The inspection and any subsequent maintenance activities
performed shall he documented, recording date and time of inspection, individual(s)
making the inspection and a narrative description of the -facility's stormwater control
systems, plant equipment and systems. Records of these inspections shall be
incorporated into the Storrnwater Pollution Prevention Plan.
Storrnwater discharge characteristic monitoring as required in Part II of this pennit shall
be performed in addition to facility inspections,
9. Implementation. The permittee shall document all monitoring, measurements,
inspections and maintenance activities and training provided to employees, including the
log of the sampling data and of activities taken to implement BNIT's associated with the
industrial activities, including vehicle maintenance activities. Such documentation shall
be kept on -site for a period of five years and made available to the Director or his
authorized representative immediately upon request.
Part II Page 3 of 4

Permit No. NCS000045
SECTION B: QUAL1TATIVE MONITORING REQUIREMENTS
Qualitative monitorrequires a visual inspection of each stormwater outfall regardless of
representative outran status and shall be performed as specified below in 'Table L Qualitative
monitoring is for the purpose of evaluating, the effectiveness of the Stormwater Pollution
Prevention Plan (SPPP) and assessing new sources of stormwater pollution. No analytical tests
are required. Qualitative. monitoring of stormwater outfalls does not need to be performed during
a representative storm event.
In the event an atypical condition is noted at a stormwater discharge outfall, the Permittee shall
document the suspected. cause of the condition and any actions taken in response to the
discovery. This documentation will be maintained with the Stormwater Pollution Prevention
Pan,
All qualitativequdi[ative monitoring will be performed twice per year, once in the ,spring April - June) and
once in the fall (September - November).
Table I.
Qualitative Moni
ring Req
nts
Discharge Characteristics Frequency Moni
toring
cationl
Od
Cli
Floating 'o ids
Suspended Solids
Semi -Annual SDO
Semi -Annual SDO
Semi -Annual SDO
Serni-AnnualSDO
Semi -Annual SDO
Foam
Oil Sheen
Other obvious indicators
of stormwater pollution
-Annual SDO
Semi -Annual SDO
Semi -Annual SDO
Footnotes:
1 NIonitort.'ng Location° Quatitative monitoring, sha
regardless of representative °Wall status.
d
Paitit Pe4of4
er discharge outfall (SDO)

Permit No. NCS000045
PART III STANDARD CONDITIONS FOR NPDES STORMWATER IN AL
PERMITS
SECTION A: COMPLIANCE AM) LIABILiTY
Compliance Schedule
The permitte,e shall comply with Limitations and Controls specified for stormwater
discharges in accordance with the following schedule:
Existing Facilities: The Stormwater Pollution Prevention Plan shall be developed and
implemented within 12 months of the effective date of the initial permit and updated
thereafter on an annual basis. Secondary containment, as specified in Part 11, Section A,
Paragraph 2(b) of this permit, shall he accomplished within 12 months of the effective
date of the initial permit issuance.
Proposed Facilities: The Stormwater Pollution Prevention Han shall be developed and
implemented prior to the beginning of discharges from the operation of the industrial
activity and be updated thereafter on an annual basis. Secondary containment, as
specified in Part II, Section A. Paragraph 2(b) of this permit shall be accomplished prior
to the beginning of discharges from the operation of the industrial activity.
Duty to Comply.
The permittee must comply with all conditions of this individual permit. Any pererat
noncompliance constitutes a violation of the Clean Water Act and is grounds for
enforcement action; for permit termination, revocation and reissuance, or :modification; or
denial of a permit upon renewal application.
a. The perrnittee shall comply with standards or prohibitions established under
section 307(a) of the Clean Water Act for toxic pollutants within the time
provided in the regulations that establish these standards or prohibitions, even if
the permit has notyet been modified to incorporate the requirement.
b. The Clean Water Act provides that any person who violates a permit condition is.
subject to a civil penalty not to exceed $25„000 per day for each violation. Any.
person who negligently violates any permit condition is subject to criminal
penalties of $2,500 to $25,000 per day of violation, or imprisonment for not more
than 1 year, or both. Any person who knowingly violates permit conditions is
subject to criminal penalties of $5,000 to $50,000 per day of violation, or
imprisonment for not more than 3 years, or both. Also, any person who violates a
permit condition may be assessed an administrative penalty not to exceed $1.0,000
per violation with the maximum amount not to exceed $125,000, [Ref: Section
309 of the Federal Act 33 USC 1319 and 40 CFR 122.4.1(a)]
Part 111 Page 1 of 10 Pages

Permit No. NCSOOOo45
c.
state law, a daily civil penalty of not more than ten thousand dollars
,000) per violation may be assessed against any person who violates or fails
to act in accordance with the tours, conditions, or requirements of a permit. [Ref.
rth Carolina General Statutes 143-215.6A]
d, Any person may be assessed an administrative penalty by the. Director for
yicylating section 301, 302, 306, 307, 308, 318, or 405 of the Act, or any pet►nit
condition or limitation implementing any of such sections in a permit issued under
section 402 of the Act. Administrative penalties for Class T violations are not to
exceed $10,000 per violation, with the maximum amount of any Class T penalty
assessed not to exceed $25,000, Penalties for Class 11 violations are not to exceed
$10,000 per day for each day during which the violation continues, with the
maximum amount of any Class 13 penalty not to exceed $125,000.
Duty to Nlitig
The peer
e shall take all reasonable steps to minimize or prevent. any discharge in
it of this individual permit which has a reasonable likelihood of adversely
affecting human health or the environment.
4, Civ°iland Criminal Liability
Except as provided in Part III, Section C of this permit regarding hypassing of stctrrrvv°ate
control facilities, northing in this individual permit shall be construed to relieve the
permittee from any responsibilities, liabilities, or penalties for noncompliance pursuant to
NCGS 143-215.3, 143-215.6A, 143-215.6B, 143-215.6C or Section 309 of the Federal Act,
33 USC 1319. Furthermore, the perrnittee is responsible for consequential damages, such
as fish kilts, even though the responsibility for effective compliance may be temporarily
suspended.
Oil and Hazardous Substance Liability
Nothing ire this individual per shall be construed to preclude the institution of any
legal action or relieve the permittee from any responsibilities, liabilities, or penalties to
which the permittee is or may be subject to under NCGS 143-215.75 et seq. or Section 311
of the Federal Act, 33 USC 1321.
6. Property Rights
"The issuance of this individual permit does not convey any property rights in either real or
personal property, or any exclusive privileges, nor does it authorize any injury to private,
property or any invasion of personal rights, nor any infringement of Federal, State or local
laws or regulations.
Part III Page 2 of 10 Pages

Permit No, NCS000045
7 Severabili
The provisions of this individual permit are severable, and if any provision of this
individual permit, or the application of any provision of this individual permit to any
circumstances, is held invalid, the application of such provision to other circumstances,
and the remainder of this individual permit, shall not be affected thereby.
Duty to Provide Information
The permittee shall furnish to the Director, within a reasonable time, any information
which the Director may request to determine whether cause exists for modifying,
revoking and reissuing, or terminating the permit issued pursuant to this individual peril it.
or to determine compliance with this individual permit. The permittee shall also furnish
to the Director upon request., copies of records required to be kept by this individual
permit.
q, Penalties for Tampering,
The Clean. Water Act provides that any person who falsifies, tampers with,. or knowingly
renders inaccurate, any monitoring device or method required to be maintained under this
individual permit shall, upon conviction, be punished by a fine of not more than $10,000
per violation, or by imprisonment for not more than two years per violation, or by both.
If a conviction of a person is for a violation committed after a first conviction of such
person under this paragraph, punishment is a fine of not more that $20,000 per day of
violation, or by imprisonment of not more than 4 years, or both.
10, Penalties for Falsification of Reports
The Clean Water Act provides that any person who knowingly makes any false statement,
representation, or certification in any record or other document submitted or required to
be maintained under this individual permit, including monitoring reports or reports of
compliance or noncompliance shall, upon conviction, be punished by a fine of not more
than $10,000 per violation, or by imprisonment for not more than two years per violation,
or by both.
SECTION B: GENERAL CONDITIONS
Individual. Pci i it Expiration
The per nee is not authorized to discharge after the expiration date, in order to receive
automatic authorization to discharge beyond the expiration date, the permittee shall
submit forms and fees as are required by the agency authorized to issue permits no later
than 180 days prior to the expiration date, Any permittee that has not requested renewal
at least 180 days prior to expiration, or any permittee that does not have a permit after the
expiration and has not requested renewal at ]east 180 days prior to expiration, will be
Part 111 Page 3 of 10 Pages

Vermit No, NUS000045
subjected to enforcement procedures as pr vided in NCGS §143-2153.6 and 33 USC
1251 et. seq.
Transfers
This permit is not transferable to any person except after notice to and approval by the
Director. The Director may require modification or revocation and reissuance of the
permit to change the name and incorporate such other requirements as may he necessary
under the Clean Water Act. Perinittee is required to notify the Division in writing in the
event the permitted facility is sold or closed,
3 itznatory Requirements
All app]ications, reports, or infor
certi lied.
d
he Director shallhe signed and
a. An applications to be covered under this individual permit shall be signed as
follows:
(1)
For a corporation: by a responsible corporate officer. For the purpose of
this Section, a responsible corporate officer means: (a) a president,
secretary, treasurer or vice president of the corporation in charge of a
principal business function, or any other person who performs similar
policy or decision making functions for the corporation, or (b) the manager
of one or more manufacturing production or operating facilities employing
more than 250 persons or having gross annual sales or expenditures
exceeding 25 million (in second quarter 1980 dollars), if authority to sign
documents has been assigned or delegated to the manager in accordance
with corporate procedures.
For a partnership or sole proprietorship: by a general partner or the
proprietor, respectively; or
(.3) For a municipality,. State, Federal, or other public agency: by either a
principal executive officer or ranking elected official,
b. Al] reports required by the individual permit and other .information requested by
the Director shall be signed by a person described above or by a duly authorized
representative, of that person. A person is a duly authorized representative only if:
(1) The authonzton is made in writing by a person described above;
(2) The authorization specified either an individual or a position having,
responsibility for the overall operation of the regulated facility or activity,
such as the position of plant manager, operator of a well or well field,
superintendent, a position of equivalent responsibility, or an individual or
position having overall responsibility: for environmental matters for the
Part III Page 4 of 10 Pages

Permit No NCS000045
company. (A duly authorized representative may thus be either a named
individual or any individual occupying a named position;); and
(3) The written authorization is submitted to the Director,
c. Any person signing a document under paragraphs a. or b. of this section shall
make the following certification:
"I certify, under penalty of law, that this document and all attachments were
prepared under .my direction or supervision in accordance with a system designed
to assure that qualified personnel properly gather and evaluate the information
submitted. Based on my inquiry of the person or persons W h o manage the system,
or those persons directly responsible for gathering the information, the
information submitted is, to the best of my knowledge and belief, true, accurate,
and complete. 1 am aware that there are significant penalties for submitting false
information, including the possibility of fines and imprisonment for knowing
Individual Permit Modificat on. Revocation and Reissuan-e, or Termination
The issuance of this individual permit does not prohibit the Director from reopening and
modifying the individual permit, revoking and reissuing the individual permit, or
terminating the individual permit as allowed hv the laws, rules, and regulations contained
in Title 40, Code of Federal Regulations, Parts 122 and 123; Title 15A of the North
Carolina Administrative Code, Subchapter 2H .0100; and North Carolina General Statute
143-215.1 et. al.
After public notice and opportunity for a hearing, the individual permit may be terminated
for cause. The filing of a request for a individual permit modification, revocation and
reissuance, or termination does not stay any individual permit condition. The permit shall
expire when the individual permit is terminated.
Permit Actions
The permit may be modified, revoked and reissued, or terminated for cause. The
notification of planned changes or anticipated noncompliance does not stay any
individual permit condition.
SECTION C: OPERATION AND MAINTENANCE OF POLLUTION CONTROLS
PijOpjtion and Maintenance
The permittee shall at all times properly operate and maintain all facilities and systems of
treatment and control (and related appurtenances) which are installed or used by the
perrnittee to achieve compliance with. the conditions of this individual permit. Proper
operation and maintenance also includes adequate laboratory controls and appropriate
Part 111 Page 5 of 10 Pages

quality assurance procedures. This provision requires the operation of back-up or
auxiliary facilities or similar systems which are installed by a peitnittee only when the
operation is necessary to achieve compliance with the conditions of this individual
permit,
Need to Halt or Reduce Not a Defe
It shall not be a defense for a permittee in an enforcement act
necessary to halt or reduce the permitted activity in order to
the condition of this individual permit.
Bypassing of Stoiiiiwater Control Faci]
that it would have been
ntain compliance with
Bypass is prohibited and the Director may take enforcement acti+. n against a permittee
for bypass unless:
a. Bypass vas unavoidable to prevent loss of life, personal injury or severe property
damage, and
There were no feasible alternatives to the bypass, such as the use of auxil
control facilities, retention of stormwater or maintenance during normal periods of
equipment downtime or dry weather, This condition is not satisfied if adequate
backup controls should have been installed in the exercise of reasonable
engineering judgment to prevent a bypass which occurred during normal periods
of equipment downtime or preventive maintenance; and
The permittee submitted notices as required under, Part 111, Section E of this
permit.
If the Director detei
nes that it will meet the three conditions listed above, the Directs
may approve an anticipated bypass after considering its adverse effects.
SECTION D: MONITORING AND R'CORDS
1. Retaresentat3ve Sa
Samples col]ected and measurements taken, as required herein, shall be characteristic of
the volume and nature of the permitted discharge. Analytical sampling shall be
performed during a representative storm event. Samples shall be taken on a day and time
that is characteristic of the discharge. All samples shall be taken before the discharge
joins or is diluted by any other waste stream, body of water, or substance. Monitoring
points as specified in this permit shall not be changed without notification to and
approval of the Director.
Part 111 Page 6 of 10 Pages

Permit No. NCS000045
Recording Results
For each measurement, sample, inspection or maintenance activity performed. or collected
pursuant to the requirements of this individual permit, the perrnittee shall record the
following information:
The date, exact place, and time of sampling, measurements, inspection or
maintenance activity;
b. The individual(s) who 'perfonired the sampling, measurements, inspection or
maintenance activity;
c. The date(s) analyses were performed;
d, The individuals) who performed the analyses;
e. The analytical techniques or methods used; and
f. The results of such analyses.
Flow Measurements
Where required, appropriate flow measurement devices and methods consistent with.
accepted scientific practices shall be selected and used to ensure the accuracy and
reliability of measurements of the volume of monitored discharges.
Test. Procedures.
Test.procedures for the analysis of pollutants shall conform to the EMC regulations
published pursuant to NCGS 143-215.63 et. seq, the Water and Air Quality Reporting
Acts, and to regulations published pursuant to Section 304(g), 33 US:C 1314, of the
Federal Water Pollution Control Act, as Amended, and Regulation 40 CFR 136.
To meet the intent of the monitoring required by this individual permit, all test procedures
must produce minimum detection and reporting levels and all data generated must be
reported down to the minimum detection or lower reporting level of the procedure.
5. Representative Outfall
If a facility has multiple discharge locations with substantially identical stormwater
discharges that are required to be sampled, the permittee may petition the Director for
representative outfall status. If it is established that the stormwater discharges are
substantially identical and the permittee is granted representative outfall status, then
sampling requirements may be performed at a reduced number of outtalk.
Part III Page 7 of 10 Pages

Permit N(') NCS000045
6. Records Retention
Visual monitoring shall be documented and records maintained at the facility along with
the Storrnwater Pollution Prevention Plan. Copies of analytical monitoring results shall
also be maintained on -site. The peimittee shall retain records of all monitoring
information, including all calibration and maintenance records and all original strip chart
recordings for continuous monitoring instrumentation, and copies of all reports required.
by this individual permit for a period of at least 5 years from the date of the sample,
measurement, report or applicatio.n. This period may be extended by request of the
Director at any time
7. Inspection and Entry
The permittee shall allow the Director, or an authorized representative (including an
authorized. contractor acting as a representative of the Director), or in the case of a facility
vvhich discharges through a municipal separate storm sewer system, an authorized.
representative of a municipal operator or the separate storm sewer system receiving the
discharge, upon the presentation of credentials and other documents as may be required
by law, to;
a. Enter upon the pernuttee's premises where a regulated facility or activity is located
or conducted, or where records must be kept under the conditions of this
individual permit;
b. Haveaccess to and copy, at reasonable times, any records that must be kept under
the conditions of this individual permit;
c. Inspect at reasonable, times any facilities, equipment (including monitoring and
control equipment), practices, or operations regulated or required under this
individual permit; and
d. Sample or monitor at reasonable times, for the purposes of assuring individual.
permit compliance or as otherwise authorized by the Clean Water Act, any
substances or parameters at any location.
SECTION E: REPORTING REQUIREMENTS
Discharge Monitorino Reports
Samples analyzed in accordance with the terms of this permit, shall be submitted to the
Division on Discharge Monitoring Report forms provided by the Director. Submittals
shall be received by the Division no later than 30 days from the date the facility receives
the sampling results from the laboratory.
Part. 111 Fage 8 af 10 Pages

o N'4
Suhrnittin Reports
Duplicate signed copies of all reports required herein, shall be submitted to the follow
address:
Division of Water Quality
Water Quality Section
TTENTION: Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Availabilit =F of Reports
Except for data determined to he confidential under NCGS 143-215.3(a)(2) or Section
308 of the Federal Act, 33 USC 1318, all reports prepared in accordance with the terms
shall be available for public inspection at the offices of the Division of Water Quality, As
required by the Act, analytical data shall not be considered confidential. Knowingly
making any false statement on any such report may result in the imposition of criminal
penalties as provided for in NCGS 143-215.6B or in Section 309 of the Federal Act.
4, Non-S
isch arges
If the storm event monitored in accordance with this individual per t coincides with a
non-stormwater discharge, the pennittee shall separately monitor all parameters as
required under the non-stormwater discharge permit and provide this information with the
stormwater discharge monitoring report,
Planned Changes
The permittee shall give notice to the Director as soon as possible of any planned changes
at the permitted facility which could significantly alter the nature or quantity of pollutants
discharged. This notification requirement includes pollutants which are not specifically
listed in the individual permit or subject to notification requirements under 40 CFR Part
122,42 (a).
6. Anticipated Noncompliance
The permittee shall give notice to the Director as soon as possible of any planned changes
at the permitted facility which may result in noncompliance with the individual permit
requirements.
7. Bypass
a. Anticipated bypass. If the permittee knows in advance of the need for a bypass, it
shall submit prior notice, if possible at least ten days before, the date of the bypass;
including an evaluation of the anticipated quality and affect of the bypass.
Pert ttt Page 9 oft 0 Pages

Permit iso 0. SU(K)045
b. Unanticipated bypass. The permittee shall submit notice within 24 hours of
becoming aware of an unanticipated bypass.
Twenty-four Hour gepoding
The permittee shall report to the central office or the appropriate regional office any
noncompliance which may endanger health or the environment. Any information shall be
provided orally within 24 hours from the time the perrnittee became aware of the
circumstances. A written submission shall also be provided within 5 days of the time the
perrnittee becomes aware of the circumstances,
The written subinission shall contain a description of the noncompliance, and its causes;
the period of noncompliance, including exact dates and times, and if the noncompliance
has not been corrected, the anticipated time compliance is expected to continue; and steps
taken or planned to reduce, eliminate, and prevent reoccurrence of the noncompliance,
The Director may waive the Nxritten report on a case -by -case basis if the oral report has
been received within 24 hours.
Other Noncompliance
The pernititee shall report all instances of noncompliance not reported under 24 hour
reporting at the time monitoring reports are submitted,
10. Other Itiforihiatitsirt
Where the permittee becomes aware that it failed to submit any relevant facts in an
application for an individual permit or in any report to the Director, it shall promptly
submit such facts or information.
Pan III Page 10 of 10 Pages

PART IV TATIONS REOPENER
NC S+
This individual permit shall be modified or alternati rel=o ed and reissued, to comply with
any applicable effluent guideline or seater quality standard issued or approved under Sections
302(b) (2) (c), and (d), 304(h) (2) and 307(a) of the CleanWater Act, if the effluent guideline or
eater quality standard so issued or approved
The
requi
Contains different conditions or is other
the individual permit„ or
Controls any pollutant not li iced
Wore stringent than any effluent limitation in
the indr°iduaal permit.
dividual permit as modified or reissued under this paragraph shall also contain any other
.nts in the Act then applicable:
PAT ADM 1NI TERINAND COMPLIANCE MONITOR G FEE
REQUIREMENTS
The permittee must pay the administering and compliance m nitoring tee ithan 30 (thirty) days
after being billed by the Division, Failure to pay the fee in tiiaaely manner i accordancemid')
15A NCAC 2 .0105(b)() may cause this Division to initiate action to revoke the Individual
Permit,
Act
Clean Water Act
Arithmetic Mean
PA R. T VI DE}`I ONS
fi
The arithmetic mean of any set of values is the summation of the individual
divided by the ra an°aber of individual
Allovtable Non-Storms°ater ischar es
This perniiC regulates storrnwater discharges. Non -
owed in the storrnwater conveyance system are.
discharges ssFlricfa shall lie
(a) All other discharges that are authorized by a non-storrnvatrNPDES permit.
Parts I'vfi V and VI Page I cif

Permit NCS000045
(b) Uncontaminated groundwiater, foundation drains, air -conditioner condensate
without added chemicals, springs, discharges of uncontaminated potable water,
waterline and fire hydrant Bushings. Nvater fram footing drains, flows from,
riparian habitats and wetlands.
) I)iseharges resulting from fire -fighting or fire -fighting training,
4. Best Nlanagement Practices RiNIPs)
Measures or practices used to reduce the amount of pollution entering surface water..
BMPs may take the form of a process, activity, or physical structure.
5 flyp,iss
A bypass is the known diversion of stormwiiater frorn any portion of a stormiwater control
facility including the collection system, which is not a designed or established operating
mode for the facility.
6. Bulk Storage of Liquid Products
Liquid raw materials, manufactured products, waste materials or by-products with a
single above ground storage container having a capacity of greater than 660 gallons or
ssith multiple above ground storage containers located in close proximity to each other
having a total combined storage capacity of greater than 1,320 gallons.
Clean Water ,Asct
The Federal Water Pollution Control Act, also known as the Clean Water Act (CWA), as
amended, 33 USC 1251, et, seq,
Division or Day
-Inc Division of Water Quality, Department of Environment and Natural Resources.
Director
The Director of the Division of Water Quality, the pernitt issuing authority.
I 0. EMC
The Nisirth Carolina EI1V1rOnmental Ivlanagement C01111111SS1011,
11 Grab Sample
An individual sample collected instantaneously. Grab samples that will be directly
,
analyzed or qualitatively monitored must be taken tyvithin the first 30 minutes of
discharge.
Part V1 Page 2 of 6 Pages

Permit No. NCS000045
12. Hazardous Substance
Any substance designated under 40 CFR Part 116 pursuant to Section 311 of the Clean
Water Act.
13. Landfill
A disposal facility or part of a disposal facility where waste is placed in or on land and
which is not a land .treatment facility, a surface impoundment, an injection well, a
hazardous waste long-term storage facility or a surface storage facility.
14. Munic" S e Stot . • Sewe - S 'stem
A stormwater collection system within an incorporated area of local self-government such
as a city or town.
15. Overburden
Any material of any nature, consolidated or unconsolidated, that overlies a mineral
deposit, excluding topsoil or similar naturally -occurring surface materials that are not
disturbed by mining operations.
16. Perini Rec.
The owner or operator issued a permit pursuant to this individual permit.
17. Point Source Discharge of Stormwater
Any discernible, confined and discrete conveyance including, but not specifically limited
to, any pipe, ditch, channel, tunnel, conduit, well, or discrete fissure from which
storrnwater is or may be discharged to waters of the state.
18. Representative Storm Event
A storm event that measures greater than 0.1 inches of rainfall and that is preceded by at least 72
hours in which no storm event measuring greater than 0.1 inches has occurred. A single storm.
event may contain up to 10 consecutive hours of no precipitation. For example, if it rains for 2
hours without producing any collectable. discharge, and then stops, a sample may be collected if a
rain producing a discharge begins again within the next 10 hours.
19. Representative OutfallStatus
When it. is established that the discharge of stonnwater runoff from a single outfall is
representative of the discharges at multiple outfalls, the DWQ may grant representative
outfall status. Representative outfall status allows the permittee to perform analytical
monitoring at a reduced number of Malls.
Part VI Page 3 of 6 Pages

Permit No. NC5000045
20. Rinse Water Discharge
The discharge of rinse water from equipment cleaning areas associated with industrial
activity. Rinse waters from vehicle and equipment cleaning areas are process
wastewaters and do not include washwaters utilizing any type of detergent or cleaning
agent,
Secondary Containment
Spill containment for the contents of the single 'largest tank within the containment
structure plus sufficient freeboard to allow for the 25-year, 24-hour storm event.
Section 313 Water Priority Chemical
A chemical or chemical category which:
a. is listed in 40 CFR 372.65 pursuant to Section 313 of Title 111 of the Superfund
Amendments and Reauthorization Act (SARA) of 1986, also titled the Emergency
Planning and Community Right -to -Know Act of 1986;
b. Is present at or above threshold levels at a facility subject to SARA title HI,
Section 313 reporting requirements; and
c. Thai meet at least one of the following criteria:
(1) Is listed in Appendix D of 40 CFR part 122 on either Table 11 (organic
priority pollutants), Table HI (certain metals, cyanides, and phenols) or
Table IV (certain toxic pollutants and hazardous substances);
(2) Is listed as a hazardous substance pursuant to section 311(b)(2)(A) of the
CWA at 40 CFR 116.4; or
(3) Is a pollutant for which EPA has published acute or chronic water quality
criteria.
23 Severe Property Damage
Means substantial physical damage to property. damage to the control facilities which
causes them to become inoperable, or substantial and permanent loss of natural resources
which can reasonably he expected to occur in the absence of a bypass. Severe property
damage does not mean economic loss caused by delays in production.
24, Significant Materials
Includes., but is not limited to: raw materials; fuels; materials such as solvents, detergents,
and plastic pellets; finished materials such as metallic products; raw materials used in
food processing or production; hazardous substances designated under section 101(14) of
Part VI Page 4 of 6 Pages

Permit No. NCS5
CERCLA; any chemical the facility is required to report pursuant to section 313 of Title
III of SARA; fertilizers; pesticides; and waste products such as ashes, slag and sludge that
have the potential to be released with stormwater discharges.
Significant Spills
Includes, but is not limited to: releases of oil or hazardous substances in excess of
reportable quantities under section 311 of the Clean Water Act (Ref: 40 CFR 110.10 and
CFR 117.21) or section 102 of CERCLA (Ref: 40 CFR 302.4).
Stormwater Runoff
The flow of water which results from precipitation and which occurs immediately
following, rainfall or as a result of snowmelt.
27, Stormwater Associated a iih industrial Activity
The discharge from any point source which is used for collecting and conveying
stormwater and which is directly related to manufacturing, processing or raw material
storage areas at an industrial siteFacilities considered to be engaged in "industrial
activities" include those activities defined in 40 CFR 122.26(b)(14). The term does not
include discharges from facilities or activities excluded frorn the NPDES program.
Stormwater Pollution Prevention Plan
A comprehensive site -specific plan which details measures and practices to reduce
stormwater pollution and is based on an evaluation of the pollution potential of the site.
29. Ten Year Design Storm
The maximum 24 hour precipitation event expected to be equaled or exceeded on the
average once in ten years. Design storm information can be found in the State of North
Carolina Erosion and Sediment Control Planning and Design Manual.
30, Total Flow
The flow corresponding to the ti me period over which the entire storm event occurs.
Total flow shall be either; (a) measured continuously, (b) calculated based on the amount
of area draining to the, outfall, the amount of built -upon (impervious) area, and the total
amount of rainfall, or (c) estimated by' the measurement of flow at 20 minute intervals
during the rainfall event.
31. Toxic Pollutant
Any pollutant listed as toxic under Section 307(a
Part VI Page 5 of 6 Pages
0
he Clean 'later Act.

34.
pset
4
i Leans an exceptional incident in which there is unintentional and temporary
noncompliance eclanolopy based perm' effluent lirnatations because of factor '
be fond the reasonable control of the permittee. An upset does not include
nc ncompliance to the extent caused by operational error, improperly designed treat ent
or control facilities, inadequate treatment or control facilities, lack of preventive
maintenance, or careless or improper operation.
V l isle intenance Activity
°ity
Vehicle rehabilitation, mechanical repairs, painting, fu lir , 3tabr cation, v htcle clearairag
operations„ or airport deicing operations:
si lt. edimentatior
Solid particulat
byit
eye
gray€
.aI and organic, that has heel or is being transported
e of oriin s hich can be seen ith the unaided
24 hour St Orin event
The rnaxiniuria 24-hour' precipitation event expected tc be. equaled or exceeded. on the
average, once in 25 years,
Part VI Pa6 of 6 rages

ATA
NCDENR
Michael F. Easley
Governor
William G. Ross, Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek,. P,E,, Director
Division of Water Quality
August 17, 2005
Jerrell Cook
National Welders Supply Co. Inc.
P.O. Box 31007
Charlotte, North Carolina 28231-6098
Subject: Draft NPDES Permit
Permit No. NC0079758
National Welders Supply Co.
Mecklenburg County
Dear Mr, Cook:
The Division of Water Quality (DWQ) has drafted a NPDES permit for the
above referenced facility. The permit authorizes the National Welders Supply
Co. to discharge up to 0.0143 MGD of treated wastewater to UT Taggart Creek,
a class C water in the Catawba River Basin. The draft permit includes
discharge requirements and/or limitations for flow, total suspended solids
(TSS), total copper, total zinc, turbidity, pH and acute toxicity
The following modifications have been made in this draft permit.
Quarterly effluent monitoring for lead has been deleted. A review of
monitoring data indicated that there is no reasonable potential for
this parameter to exceed the water quality standards and is no longer
a parameter of concern,
The parameter, Total Suspended Residue, has been changed to Total
Suspended Solids.
At this time, the Division is submitting a notice to the newspapers of
general circulation in Mecklenburg County, inviting comments from you or
your representative, the public and other agencies on the draft permit. The
notice should be published on or about August 24, 2005. Following a 30-day
comment period, we will review all pertinent comments received and take
appropriate action on the permit issuance.
N. C. Division of Water Quality NPDES Unit
1617 Mail Service Center, Raleigh, NC 27699-1617
Internet, h2o enr,state,nc,us
Phone: [phone]
fax [phone]
DENR Customer Service Center, 1 800 623-7748

Letter to Jerre11 Cook
Page 2
Please provide written comments on the draft permit no later than
September 30, 2005. If you have any questions, please contact me at (919)
733-5083, extension 512.
Sincerely,
Jacquelyn M. Nowell
NPDES Unit
Attachments
cc: Mooresville Regional Office/ Surface Water Protection
Mooresville Regional Office/Aquifer Protection Section
Aquatic Toxicology Unit
Mecklenburg County
Permit File

Subject. Permit No, NC0079758
From: Jackie NCM-ell <jackiestowel1@nernaiLn
Thu, 22 Sep 2005 10:40:11 -0400
To: Dee Browder i ee, r wder, ncmaiLnet
1
' 97 Sdr tpermit2005.doe
79758 fact heet.d ac
Content -Encoding: base64
Conte° -T
Content« n
Vie. application/msword
coding. base64
Content -Type: applicair `ms
79758 draft letter Df .doe
ord
Cordon -Type: application/msword
Content -Encoding: base64
0/20/2005 : 7 A

NCDENR / DWQ
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
National Welders Supply Company
NPDES No. NC0079758
Facflity lnforrnation
ity Name:
(2.) Permitted Flow,MGD:
(3.) Facility Class:
(4.) Facility Status:
(5.) Permit Status:
(1.) Receiving Stream:
National Welders Supply Company
0.0143
Existing
Renewal
6.) County:
(7.) Regional
ce:
(8.) USGS Topo Quad:
(9). USGS Topo Site:
Stream Charact
UT Taggart Creek
Mecklenburg
Mooresville
G15NW
Charlotte West
(2.) Subbasin:
4 Index No.:
(4.) Stream Class:
303t ed:
(5.)
(6.) 3
d
us:
(7.) Use Support:
030834
NO
(8.) Drainage Area (mi2):
(9.) Summer 7Q10 (cfs)
(10.) Winter 7Q10 (c
(11.) 30Q2 (cfs):
2.) Average Flow (cfs):
(1 •
Conditions Incorporated into Permit Renewal
Proposed Conditions
Delete monthly effluent
monitoring requirement.
Delete monthly effluent
monitoring .requirement.
Reduce effluent monitoring
from monthly to quarterly.
Parameters A
d
Effluent- hardness, alkalinity
Effluent- cadmium
Effluent- cop.
a
zinc
Extend permit expiration date Permit Expiration Date
to 6/30/05.
0
0
0
0
100
Basis for Conditio
Sufficient data exists to
characterize these
parameters. There are no
relevant standards requiring
continuation,
• Cadmium was not detected
(all < 2 ug/i) in 11 samples
collected between 1/00-8/01.
These metals were each
detected only once in 11
samples collected between
1/00-8/01. No limits
necessary based on values
reported and Action Level
Policy.
Per Catawba Basin renewal
schedule.

NPDES PERMIT FACT SHEET National Welders Supply Company
Page 2 NPDES No. NC0079758
PROJECT NOTES
Summary
• This is a permit renewal for a 0.0143 MGD minor industrial facility located in Mecklenburg
County. The facility manufactures acetylene gas, using calcium carbide as the principal
raw material. The manufacturing process produces an alkaline by-product (carbide lime)
which is generally shipped offsite for use by other industries. However, this material may
still be pumped and stored in an unlined 1.5-acre lime slurry holding pond. Seepage from
this pond and stormwater runoff is then collected by two seepage collection ponds, followed
by a seepage treatment pond where carbon dioxide is added for pH adjustment. Treated
process wastewater is then discharged episodically via Outfail 001. All sanitary wastewater
is piped to the CMUD sewer system.
• The facility discharges treated process wastewater episodically to an unnamed tributary to
Taggart Creek, which is zero -flow, The receiving stream is not 303(d) listed, and there are
no specific management strategies listed in the 1999 Catawba Basin Plan.
Permit Development
• An individual NPDES permit was originally issued because CMUD would not accept the
lime slurry wastewater. The previous permit expired 8/31/01. A permit renewal
application was received 4/10/01.
There are no Federal Effluent Guidelines covering this operation (SIC= 2813). The previous
permit included effluent limitations for flow, TSS, pH, and turbidity. These effluent limits
have been retained in the permit renewal.
The previous permit also included monitoring -only for alkalinity, hardness, metals
(cadmium, copper, lead, zinc), andacute toxicity. These monitoring parameters were
originally included because the applicant indicated that metals may be present in the
wastestream. For this current renewal, the permittee requested that metals monitoring he
dropped from the permit since they are not added to the discharge. Review of the metal
data shows no detections (out of 11 samples) for cadmium, which has been deleted from
this draft permit. Effluent data shows one detection each (out of 11 samples) for copper,
lead, and zinc, so these have been retained on a reduced monitoring frequency (quarterly).
The requirement for alkalinity and hardness data has been deleted, since these parameters
are not limited, and sufficient data exists for effluent characterization . Finally, the acute
toxicity monitoring requirement has been retained.
• The facility is working toward an ultimate goal of a complete recycle system. In 1998,
some piping alterations were added to allow reuse of process water.
DMR, Data.
• Effluent Chemical Data. The facility has generally been compliant with its limits for flow,
pH, TSS, and turbidity. There were no detections of cadmium, and one detection of copper,
lead, zinc.
• Effluent Toxicity Data. Between the period 1997-2001, the facility reported acute toxicity
test LC50 results as > 100% effluent for 4 of 6 events, The receiving stream is zero flow,
with an instream waste concentration of 100%. Therefore, test results indicate a lack of
acute toxicity for the majority of events.
• Compliance Data. Between the period 1/94-3/00, the facility was assessed a civil penalty
of $23,500 in 1998 for failure to report discharge monitoring results.
WLA Data.
• The last WLA was conducted in 1990.
Mooresville Region Data.
• The MRG staff report dated 7/3/01 stated that the lime slurry holding pond is completely
filled with a solid alkaline material that is generated as a by-product of the manufacturing.
The MRO recommends that the permittee address how the solids problem will be addressed
in the future. The draft permit includes language that adequate freeboard will be
maintained in the lagoon to prevent bypassing of the treatment system.
Page 2
Version. October 20, 2005

NPDES PERMIT FACT SHEET National Welders Supply Company
Page 3
Proposed Schedule for Permit Issuance
Draft Permit to Public Notice:
Peiinit Scheduled to Issue:
State Contact
10/17/01
1.2/3/01
NPDES No. NC0079758
If you have any questions on any of the above information or on the attached
permit, please contact Tom Belnick at [phone], extension 543.
Copies of the following are attached to provide further information on the perm.i
development:
• Draft Permit
NPDES Recommendation by:
Regional Office Comments
Regional Recommendation
by:
Reviewed and accepted by:
Regional Supe
NPDES Unit Supervisor:
Signature
Signature
Signature
Signature
Date
Date
Date
Date
Page 3
Version: October 20, 2005

'
- ,Permit No. NCO079758
Subject: Permit No. NCO079758
From: ~_~Jackie Nowell
To:
� J|
| ._-_x
' --�
Content-Encoding: v
|
�|79758 fact sheet.doc, Content -Type:
| 1
Content -Encoding: base,64
'~^ ''' '' �� , '
��*����.- - �^'- ' - ' ' �

Permit No. NC0079758
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,
National Welders Supply Company
is hereby authorized to discharge wastewater from a facility located at
5313 Old Dowd Road
Charlotte, North Carolina
Mecklenburg County
to receiving waters designated as an unnamed tributary to Taggart Creek in the Catawba
River Basin in accordance with effluent limitations, monitoring requirements, and other
conditions set forth in Parts I, II, III,. and IV hereof.
The permit shall become effective
This permit and the authorization to discharge shall expire at midnight on June 30, 2010.
Signed this day
DRAFT
Alan W. Klimek, P.E., Director
Division of Water Quality
By Authority of the Environmental
agement Commission

Permit No. NC0079758
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or
discharge are hereby revoked, and as of this issuance, any previously issued
permit bearing this number is no longer effective. Therefore, the exclusive
authority to operate and discharge from this facility arises under the permit
conditions, requirements, terms, and provisions included herein.
s hereby authorized to:
National elders ply Company
Continue to operate the existing 0.0143 MGD wastewater treatment facility located
at 5313 Old Dowd Road, Charlotte, Mecklenburg County; and consisting of the
following treatment components:
A 1.5 acre lime average pad,
Three (3) lime slurry holding tanks,
Seepage collection pond,
Seepage treatment basin with CO2 neui
a
zation
2. Discharge from said treat ent works (via Outfall 001) into an unnamed tributary to
Taggart Creek, a Class Cwater in the Catawba River Basin, at the location specified
on the attached map.

Permit No. NC0079758
A (1). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
Beginning on the effective date of this permit and lasting until expiration, the Permittee is authorized to discharge
treated wastewater from Outfall OOL Such discharges shall be limited and monitored by the Permittee as
specified below:
tF1LUENT
CBARACTERISTICS
Flow
EFFLUENT ITATIONS
MONITORING REQUIRE
Monthly
Average
0.0143 MGD
Weekly
Average
Daily
Maximum
Measurement Sample
Frequency Type
Weekly In
ntan
Sample
Location'
Total Suspended Solids
pH 2
Acute Toxicity3
30.0 mg/1
45.0 mg/1
2/Month
Weekly
Grab
Grab
Annual3
Grab
Total Copper
Total Zinc
Turbidity5
Quarterly4
Grab
Quaiterly4 Grab
Weekly Grab U, D
Notes:
1. Sample locations: E- Effluent, U- Upstream, D- Downstream.
2. The pH shall not be less than 6,0 standard units nor greater than 9.0 standard units.
3. Acute Toxicity (Fathead Minnow, 24-hour) Monitoring, Annual; refer to Special Condition A (21.
4. Monitoring once during each calendar quarter (Jan -March, Apr -June, July -Sept., Oct -Dec.).
5. The discharge shall not cause the turbidity of the receiving water to exceed 50 NTU. If the turbidity exceeds
these levels due to natural background conditions, the discharge cannot cause any increase in turbidity in the
receiving water.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

Permit No. NC0079758
SUPPLEMENT TO EFFLUENT LIMITATIONS
AND MONITORING REQUIREMENTS
SPECIAL CONDITIONS
A (2.) ACUTE TOXICITY MONITORING (ANNUAL)
The permittee shall conduct annual toxicity tests using protocols defined as definitive in
E.P.A. Document EPA/600/4-90/027 entitled "Methods for Measuring the Acute Toxicity of
Effluents to Freshwater and Marine Organisms." The monitoring shall be performed as a
Fathead Minnow (Pimephales promelas) 24 hour static test. Effluent samples for self -
monitoring purposes must be obtained below all waste treatment. The permittee will conduct
one test annually, with the annual period beginning in January of the calendar year of the
effective date of the permit. The annual test requirement must be performed and reported by
June 30. If no discharge occurs by June 30, notification will be made to the Division by this
date. Toxicity testing will be performed on the next discharge event for the annual test
requirement.
The parameter code for this test is TAE6C. All toxicity testing results required as part of this
permit condition will be entered on the Effluent Discharge Form (MR-1) for the month in
which it was performed, using the appropriate parameter code. Additionally, DWQ Form AT-1
(original) is to be sent to the following address:
Attention: NC DENR / DWQ / Environmental Sciences Branch
1621 Mail Service Center
Raleigh, N.C. 27699-1621
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 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.

Michael F. Easley
Governor
William G. Ross, Jr.,Secretary
North Carolina. Department of Environment and Natural Resources
Gregory J. Thorpe, Ph.D., Acting Director
Division of Water Quality
DIVISION OF WATER QUALITY
January 4, 2002
Jerrell Cook
National Welders Supply Co,
P.O. Box 31007
Charlotte, North. Carolina 28231-6098
Subject: NPDES Permit No, NC0079758
National Welders Supply Co,
Mecklenburg County, NC
Dear Itr. Cook:
Our records indicate that NPDES Permit No, NC0079758 was issued on December 21, 2001
for the discharge of wastewater to the surface waters of the State from your facility. The purpose
of this letter is to advise you of the importance of the Permit and the liabilities in the event of failure
to comply with the terms and conditions of the Permit. if you have not already done so, it is
suggested that you thoroughly read the Permit. Of particular importance is Page 4 .
Page 4 sets forth the effluent limitations and monitoring requirements for your discharge.
Your discharge must not exceed any of the limitations set forth, The section headed "Monitoring
Requirements" describes the measurement frequencies, sample types and sampling locations. Upon
commencement of your discharge (or operation), you must initiate the required monitoring. The
monitoring results must be entered on reporting forms furnished or approved by this Agency, If you
have not received these forms, they should be arriving shortly. If you fail to receive the forms, please
contact this Office as quickly as possible. 1 have enclosed a sample of the "Effluent" reporting form
(DWQ Form MR-1), plus instructions for completing the form. It is imperative that il. applicable
parts be completed, and the original and one copy be submitted as required.
Please be advised that an annual administering and compliance monitoring fee may be required
for your facility. You will soon be receiving a statement from our Raleigh Office. It is imperative
that the fee be paid in a timely manner so as to prevent enforcement action or possible revocation of
your permit,
The remaining parts of the Permit set forth definitions, general conditions and special
conditions applicable to the operation of wastewater treatment facilities and/or discharge(s). The
conditions include special reporting requirements in the event of noncompliance, bypasses, treatment
unit/process failures, etc, Also addressed are requirements for a certified wastewater treatment plant
operator if you are operating wastewater treatment facilities. Any changes in operation of wastewater
Customer Service Mooresville l epanel Office, 919 North Main Street, Mooresville, NC 28115 PHONE [phone]
1 800 523-'i'74€f FAX [phone]

Jerreli Cook
January 4, 2002
Page No. 2
treatment facilities, quantity and type of wastewater being treated or discharged, expansions and/or
upgrading of wastewater treatment facilities must be permitted or approved by this Agency.
Failure to comply with the terms and conditions of an NPDES Permit subjects the Permittee
to enforcement action pursuant to Section 143-215.6 of the North Carolina General Statutes, A civil
penalty of up to $25,000 per violation (and/or criminal penalties) may be assessed for such violations.
If you find at any time that you are unable to comply with the terms and conditions of the Permit, you
should contact this Office immediately. A Special Order by Consent (SOC) may be necessary while
pursuing action to obtain compliance.
As a final note, an NPDES Permit is normally issued for a five-year period. Permits are not
automatically renewed. Renewal requests must be submitted to this Agency no later than 180 days
prior to expiration. Please make note of the expiration date of your Permit. This date is set forth on
Page 1 of the Permit. Also note that NPDES Permits are not automatically transferable. Tf you, as
the Permittee, cease to need this Permit, then you should request that the Division of Water Quality
rescind the Permit or request that DWQ reissue the Permit to another party, if necessary.
As mentioned previously„ the purpose of this letter is to advise you of the importance of your
NPDES Permit, Please read the Permit and contact this Office at 704/663-1699 in Mooresville if you
have any questions or need clarification. We look forward to providing any assistance.
-tck
Enclosure
DRG:dee
cerely,
D. Rex Gleason, P.E.
Water Quality Regional Supervisor

NCDENR
Michael F. Easley
Governor
William G. Ross, Jr., Secretary
North Carolina Department of Enironment and Natural Resources
Gre oryt•1 Thar 1?1r::1 , Acittf i:I. it'ector
°•.. y N Ai !ivisicitt O Wat ity
December 21, 2001
Jerrell Cook
National Welders Supply Co.
P.O. Box 31007
Charlotte, North Carolina 28231-6098
Subject: NPDES Permit Issuance
Permit No. NC0079758
National Welders Supply Co.
Mecklenburg County
Dear Mr. Cook:
Division staff have reviewed and approved your application for an NPDES discharge permit.
Accordingly, the Division is forwarding the subject NPDES permit. This permit is .issued
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 May 9, 1994 (or as subsequently amended),
The following items appear in this FINAL permit:
Deletion of monthly effluent monitoring for alkalinity and hardness. Sufficient data
exists to characterize these parameters.
Deletion of monthly effluent monitoring for cadmium, since there were no detections (n=
11 samples) collected between 1/00-8/01.
Reduction in effluent monitoring from monthly to quarterly (calendar basis) for copper,
lead, and zinc, based on the limited detection (1 detection in 11 samples) collected
between 1/00-8/01.
Since the facility has already collected five acute toxicity data points, change the acute
toxicity monitoring requirement from episodic to annual frequency.
Extend the permit expiration date to 6/30/05 based on the Catawba. Basin renewal
schedule.
Please note that this facility is required to maintain sufficient freeboard in the lime slurry
holding pond to prevent overflowing and bypassing of the wastewater treatment system. The
Division also encourages the facility's investigation into a complete recycle system.
If any parts, measurement frequencies, or sampling requirements contained in this permit 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 a demand is made, this permit shall be final and binding.
Please take notice that this permit is not transferable except after notice to the Division. Part
II, E.4, addresses the requirements to be followed in case of change in ownership or control of
this discharge. The Division may require modification or revocation and reissuance of the
per Emit. This permit does not affect the legal requirements to obtain other permits which may
be required by the Division of Water Quality, the Division of Land Resources, the Coastal Area
Management Act, or any other federal or local governmental permit.
N. C. Division of Water Quality ! NPDES Unit
1617 Mail Service Center, Raleigh, NC 27699-1617
Internet: h2o.enr,state,nc.us
Phone: [phone]
fax: [phone]
DENR Customer Service Center. 1 800 623-7748

NPDES Permit Iu
Permit N.
National Welders SupplyCompany
Page
If you have any questions conce in this permit, please contact To
number 1 1 1 733-5083, ext. 543.
t No. NC0079758
Mooresville Regional Office. Water;Quality
Potnt Source Compliance Enforcement Unit
Central Files
a Unit
Sincerely,
Original Si
Gregory d.
k at telephone
Ph.D.

Pest No. NC0079758
STATE OF NORTH CAROLINA
DEPART ENT OF ENVIRONMENT AND NATURAL I OURCES
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,
National Welders Supply Company
is hereby authorized to discharge wastewater from a facility located at
5313 Old Dowd Road
Charlotte, North Carolina
Mecklenburg County
to receiving waters designated as an unnamed tributary to Taggart. Creek in the Catawba
River Basin in accordance with effluent limitations, monitoring requirements, and other
conditions set forth in Parts 1, Il, III, and IV hereof.
The permit shall become effective February 1, 2002.
This permit and the authorization to discharge shall expire at midnight on June 30, 2005.
Signed this day December 21, 2001.
Original Silted By
David AQ Goodrich
Gregory J. Thorpe, Ph.D., Acting Director
Division of Water Quality
By Authority of the Environmental Management Commission

s hereby audio
2
L
a onal
'ed to'
ders Supply Co:
t
t No. NC0079758
Continue to operate the existing 0.014 ante at r treatment la t
located at 531 Old Dowd Road, ,, Charlotte, ecklenburg County,d
consisting e folio g treatment components:
■ li e storage lagoon
seepage ponds
seepage tea en t basin CO2 eu a zation
Discharge ire said treatment e I
tribu to Ta'art Creek, a Class C
the location specified on the attached p.
Mks
is Out
all 001)
e Catawba
to
u
ver Basin, at

Latitude:
Longitude:
USGS Quad It.
River Basin #:
Receiving Stream;
Stream Class:
35° 13' 34"
80° 55' 43"
G151vW
03-08-34
ur Taggart Creek
C
N
National Welders Supply Co.
Mecklenburg County
NCDQ79758

Per t No. NC0079758
A (1). EFFLUENT LIMITATIONS AND MONITORING REQUIRE E TS
Beginning on the effective date of this permit and lasting until expiration, the Permittee is authorized to discharge
treated wastewater from Outfal1 001. Such discharges shall be limited and monitored by the Pennittee as specified
below:
EFFLUENT
CHARACTESTI(
Flow
Total Suspended Residue
PH2
Acu
To
Copper
Lead
Zinc
Turbidity5
EFFLUENT LIMITATIONS
Monthly
Average
0.0143 MGD
30.0 mg/1
Weekly
" Average
45.0 mg
MONITORING REQUIREMENTS
Weekly
2 /Month
Annual3
Quarterly's
Quarterly4
Quarterly's
Weekly
Sample
Type
instantaneous
Grab
Grab
Grab
Grab
Grab
Grab
Grab
Sample
Location'
U. 0
Notes:
1. Sample locations: E- Effluent, U- Upstream, D»» Downstream.
2. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
3. Acute Toxicity (Fathead Minnow, 24-hour) Monitoring, Annual; refer to Special Condition A (2).
4. Monitoring once during each calendar quarter (Jan -March, Apr -June, July -Sept., Oct -Dec.).
5, The discharge shall not cause the turbidity of the receiving water to exceed 50 NTU. If the turbidity exceeds
these levels due to natural background conditions, the discharge cannot cause any increase in turbidity in the
receiving water..
There shall be no discharge of floating solids or visible foam in other than trace amounts.

Permit No. NC0079758
SUPPLEMENT TO EFFLUENT LIMITATIONS
AND MONITORING REQUIREMENTS
SPECIAL CONDITIONS
A (2.) ACUTE TOXICITY MONITORING (ANNUAL)
The permittee shall conduct annual toxicity tests using protocols defined as definitive
in E.P.A. Document EP'A/600/4 90/027 entitled "Methods for Measuring the Acute
Toxicity of Effluents to Freshwater and Marine Organisms." The monitoring shall be
performed as a Fathead Minnow (. :rnephaies prom,elas) 24 hour static test. Effluent
samples for self -monitoring purposes must be obtained below all waste treatment.
The permittee will conduct one test annually, with the annual period beginning in
January of the calendar year of the effective date of the permit. The annual test
requirement must be performed and reported by June 30. If no discharge occurs by
June 30, notification will be made to the Division by this date. Toxicity testing will be
performed on the next discharge event for the annual test requirement.
The parameter code for this test is TAE6C. All toxicity testing results required as part
of this permit condition will be entered on the Effluent Discharge Form (MR-1) for the
month in which it was performed, using the appropriate parameter code.
Additionally, DWQ Form AT-1 (original) is to be sent to the following address:
Attention: NC DENR / DWQ / Environmental. Sciences Branch
1621 Mail Service Center
Raleigh, N.C. 27699-1621
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 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.

Schedule of Compliance
The permittee shall comply with Final
the following schedule.
Pertrtittee shall comply vinth Fitt
specified below.
luernt itatitns spei
tnernt Li
charge n accordance with
t*oils by the eft five dot
Per "tree shall t tunes provide the operate rt and
facilities at optimum efficiency.
fthe pe tto
u later than 14 calendar days f'rallo ing a date identified in the above schedule of ccnrnpliance, the
Fierrnittee shall subrtbit either a report of progress or, in the case of specific actionsbeing recruited by
identified dates, a written notice of compliance or noncompliance. In the latter case, the notice shall
include the cause of noncompliance, any remedial actions taken, and probability of meeting the next
schedule

PART II
STANDARD CONDI PIONS FOR NPDES PERMITS
SECTION A. DEFINITIONS
1. Permit Issuing Authority:
2. DEM or "the Division"
Resources.
The Director of the Division of Water Quality.
Mcans the Division of Water Quality, Department of Environment and Natural
3. Used herein means the North Carolina Emzronmental Management Cornrnissis n,
4. Act or "the Act" The Federal Water Pollution Control. Act, also known as the Clean Water Act, as amended,
33 USC 1251, et. seq.
So- Mass/Day Measurements
a. The "monthly average discharge" is defined as the total mass of all daily discharges sampled and/or measured
during a calendar month on which daily discharges are sampled and measured, divided by the number of daily
discharges sampled and/or measured during such month. It is therefore, an arithmetic mean found by
adding the weights of the pollutant found each day of the month and then dividing this sum by the number
of days the tests were reported. The limitation is identified as "Monthly Average" in Part I of the permit.
b. The "weekly average discharge" is defined as the total mass of all daily discharges sampled and/or measured
during the calendar week (Sunday - Saturday) on which daily discharges are sampled and measured, divided
by the number of daily discharges sampled and/or measured during such week. It is, therefore, an arithmetic
mean found by adding the weights of pollutants found each day of the week and then dividing this sum by
the number of days the tests were reported. This limitation is identified as "Weekly Average" in Part I of the
permit.
c. The "maximum daily discharge" is the total mass (weight) of a pollutant discharged during a calendar day. If
only one sample is taken during any calendar day the weight of pollutant calculated from it is the "maximum
daily discharge." This limitation is identified as "Daily Maximum," in Part I of the permit.
d. The "average annual discharge" is defined as the total mass of all daily discharges sampled and/or measured
during the calendar year on which daily discharges are sampled and measured, divided by the number of daily
discharges sampled and/or measured during such year. It is, therefore, an arithmetic mean found by adding
the weights of pollutants found each day of the year and then dividing this sumby the number of days the
tests were reported. This limitation is defined as "'Annual Average" in Part I of the permit.
6. Concentration Measured in1
The "average monthly concentration," other than for fecal coliform bacteria, is the sum of the concentrations
of all daily discharges sampled and/or measured during a calendar month on which daily discharges are
sampled and measured, divided by the number of daily discharges sampled and/or measured during such
month (arithmetic mean of the daily concentration values). The daily concentration value is equal to the
concentration of a composite sample or in the case of grab samples is the arithmetic mean (weighted by flow
value) of all the samples collected during that calendar day. The average monthly count for fecal coiif©rrn
bacteria is the geometric mean of the counts for samples collected during a calendar month, This limitation
is identified as "Monthly Average" under "Other Limits" in Part 1 of the permit.

Part II
Page 2of11
6. b. The "average weekly concentration," other than for fecal coliform bacteria, is the sum of the concentrations
of all daily discharges sampled and/or measured during a calendar week (Sunday/Saturday) on which daily
discharges are sampled and measured divided by the number of daily discharges sampled and/or measured
during such week (arithmetic mean of the daily concentration values). The daily concentration value is equal
to the concentration of a composite sample or in the case of grab samples is the arithmetic mean (weighted
by flow value) of all the samples collected during that calendar day. The average weekly count for fecal
coliform bacteria is the geometric mean of the counts for samples collected during a calendar week. This
limitation is identified as "Weekly Average" under "Other Lirnits" in Part I of the permit.
c. The "maximum daily concentration" is the concentration of a pollutant discharge during a calendar day. If
only one sample is taken during any calendar day the concentration of pollutant calculated from it is the
"Maximum Daily Concentration", It is identified as "Daily Maximum" under "Other Limits" in Part I of the
permit.
d. The "average annual concentration," other than for fecal coliform bacteria, is the sum of the concentrations
of all daily discharges sampled and/or measured during a calendar year on which daily discharges are sampled
and measured divided by the number of daily discharges sampled and/or measured during such year
(arithmetic mean of the daily concentration values). The daily concentration value is equal to the.
concentration of a composite sample or in the case of grab samples is the arithmetic mean (weighted by flow
value) of all the samples collected during that calendar day. The average yearly count for fecal coliform
bacteria is the geometric mean of the counts for sarnples collected during a calendar year. This limitation is.
identified as "Annual Average" under "Other Limits" in Part I of the permit.
e. The "daily average concentration" (for dissolved oxygen) is the mini um allowable amount of dissolved
oxygen required to be available in the effluent prior to discharge averaged over a calendar day. If only one
dissolved oxygen sample is taken over a calendar day, the sample is considered to be the "daily average
concentration" for the discharge. It is identified as "daily average" in the text of Part I,
The "quarterly average concentration" is the average of all samples taken over a calendar quarter. It is
identified as "Quarterly Average Limitation" in the text of Part I of the permit.
g. A calendar quarter is defined as one of the following distinct periods: January through March, April through
June, July through September, and October through December,
7. itlter Measurements
Flow, (MGD): The flow limit expressed in this perrta:it is the 24 hours average flow, averaged monthly. It is
determined as the arithmetic mean of the total daily flows recorded during the calendar month.
An "instantaneous flow measurement" is a measure of flow taken at the rime of sampling, when both the
sample and flow will be representative of the total discharge.
A "continuous flow measurement" is a measure of discharge flow from the facility which occurs continually
without interruption throughout the operating hours of the facility. Flow shall be monitored continually
except for the infrequent times when there may be no flow or for infrequent maintenance activities on the
flow device.
Types of Samples
a. Composite Sample: A composite sample shall consist of.
(1) a series of grab samples collected at equal time intervals over a 24 hour period of discharge and
combined proportional to the rate of flow measured at the time of individual sample collection, or

Part II
Page 3 of 11
8. a. (2) a series of grab samples of equal volume collected over a 24 hour period with the time intervals between
samples determined by a preset number of gallons passing the sampling point. Flow measurement
between sample intervals shall be determined by use of a flow recorder and totalizer, and the present
gallon interval between sample collection fixed at no greater than 1/24 of the expected total daily flow at
the treatment system, or
(3) a single, continuous sample collected aver a 24-hour period proportional to the rate of flow.
In accordance with (1) above, the time interval between influent grab samples shall be no greater than
once per hour, and the time interval between effluent grab samples shall be no greater than once per hour
except at wastewater treatment systems having a detention time of greater than 24 hours. In such cases,
effluent grab samples may be collected at time intervals evenly spaced over the 24-hour period which are
equal in number of hours to the detention time of the system in number of days. However, in no case
rnav the rime interval between effluent grab samples be greater than six (6) hours nor the number of
samples less than four (4) during a 24-hour sampling period.
b. Grab Sample: Grab samples are individual samples collected over a period of time not exceeding 15 minutes;
the grab sample can be taken manually. Grab samples must be representative of the discharge or the
receiving waters.
9. Calculation of Means
a Arithmetic Mean: The arithrnetic mean of any set of values is the summation of the individual values divided
by the number of individual values.
b. Geometric Mean: The geometric mean of any set of values is the Nth root of the product of the individual
values where N is equal to the number of individual values. The geometric mean is equivalent to the antilog
of the arithmetic mean of the logarithms of the individual values. For purposes of calculating the geometric
mean, values of zero (0) shall be considered to be one (1).
c. Weighted by Flow Value: Weighted by flow value means the summation of each concentration times its
respective flow divided by the summation of the respective flows.
10. Calendar Day, A calendar day is defined as the period from midnight of one day until midnight of the next day.
However, for purposes of this permit, any consecutive 24-hour period that reasonably represents the calendar day
may be used for sampling.
11. Hazardous Sub5tanee: A hazardous substance means any substance designated under 40 CFR Part 116
pursuant to Section 311 of the Clean Water Act,
12, Toxic Pollutant;.
Water Act.
A toxic pollutant is any pollutant listed as toxic under Section 307(a)(1) of the Clean
sgcnoN B. GENERAL CONDJTIONS
1. Duty to Comply
The permittee must comply with all conditions of this permit. Any permit noncompliance constitutes a violation
of the Clean Water Act and is grounds for enforcement action; for permit termination, revocation and reissuance,
or modification; or denial of a permit renewal application.
a. The permittee shall comply with effluent standards or prohibitions established under section 307(a) of the
Clean Water Act for toxic pollutants and with standards for sewage sludge use or disposal established under
section 405(d) of the Clean Water Act within the time provided in the regulations that establish these
standards or prohibitions or standards for sewage sludge use or disposal, even if the permit has not yet been
modified to incorporate the requirement.

Part 11.
Page 4 of 11
1. b. The Clean Water Act provides that any person who violates a permit condition is subject to a civil penalty
not to exceed $25,000 per day for each violation, Any person who negligently violates any permit condition
is subject to criminal penalties of $2,500 to $25,000 per day of violation, or imprisonment for not more than
1 year, or both. Any person who knowingly violates permit conditions is subject to criminal penalties of
$5,000 to $50,000 per day of violation, or imprisonment for not more than 3 years, or both. Also, any person
who violates a permit condition may be assessed an administrative penalty not to exceed $10,000 per
violation with the maximum amount not to exceed S125,000. [Ref: Section 309 of the Federal Act 33 U.S.C.
1319 and 40 CFR 122.41 (a)]
c. Under state law, a civil penalty of not more than ten thousand dollars ($10,000) per violation may be assessed
against any person who violates or fails to act in accordance with the terms, conditions, or requirements of a
permit. [Ref: North Carolina General Statutes '143-215.6Aj
d. Any person may be assessed an administrative penalty by the Administrator for violating section 301, 302,
306, 307, 308, 318, or 405 of the Act, or any permit condition or limitation implementing any of such
sections in a permit issued under section 402 of the Act. Administrative penalties for Class I violations are
riot to exceed $10,000 per violation, with the maximum amount of any Class I penalty assessed not to exceed
$25,000. Penalties for Class I1 violations are not to exceed $10,000 per day for each day during which the
violation continues, with the maximum amount of any Class 11 penalty not to exceed $125,000.
2. Dury 10 Mitigate.
The permittee: shall take all reasonable steps to minimize or prevent any discharge or sludge use or disposal in
violation of this permit which has a reasonable likelihood of adversely affecting human health or the
environment.
Civil and Criminal Liability
Except as provided in perrnit conditions on "Bypassing"' (Part III, C-4) and "Power Failures" (Part 1I, C-7),
nothing in this permit shall be construed to relieve the permittee from any responsibilities, liabilities, or penalties
for noncompliance pursuant to NCGS 143-215.3, 143-215.6 or Section 309 of the Federal Act, 33 USC 1319.
Furthermore, the permittee is responsible for consequential damages, such as fish kills, even though the
responsibility for effective compliance may be temporarily suspended.
Oil and Hazardous Substance Liability
Nothing in this permit shall be construed to preclude the institution of any legal action or relieve the permittee
from any responsibilities, liabilities, or penalties to which the permittee is or may be subject to under NCGS 143-
215.75 et seq. or Section 311 of the Federal Act, 33 USG 1321. Furthermore, the permittee is responsible for
consequential damages, such as fish kills, even though the responsibility for effective compliance may be
temporarily suspended.
Property Rights
The issuance of this permit does not convey any property rights in either real or personal property, or any
exclusive privileges, nor does it authorize any injury to private property or any invasion of personal rights, nor
any infringement of Federal, State or local laws or regulations.
6. Onshore or 0 fshore Construction
This permit does not authorize or approve the construction of any onshore or offshore physical structures or
facilities or the undertaking of any work in any navigable waters.
7. Severability
The provisions of this permit are severable, and if any provision of this permit, or the application of any
provision of this permit to any circumstances, is held invalid, the application of such provision to other
circumstances, and the remainder of this permit, shall not be affected thereby.

Part 11
Page 5 of 11
8. Duty to Provide Information
The permittee shall furnish to the Permit Issuing Authority, within a reasonable time, any information which the
Permit Issuing Authority may request to determine whether cause exists for modifying, revoking and reissuing, or
terminating this permit or to determine compliance with this permit. The permittee shall also furnish to the
Permit Issuing Authority upon request, copies of records required to be kept by this permit.
9. Duty to Reapply
If the permittee wishes to continue an activity regulated by this permit after the expiration date of this permit, the
permittee must apply for and obtain a new permit.
10. Expiration of Permit
The permittee is not authorized to discharge after the expiration date. In order to receive automatic authorization
to discharge beyond the expiration date, the permittee shall submit such information, forms, and fees as are
required by the agency authorized to issue permits no later than 180 days prior to the expiration date. Any
permittee that has not requested renewal at least 180 days prior to expiration, or any permittee that does not have
a permit after the expiration and has not requested renewal at least 180 days prior to expiration, will subject the
permittee to enforcement procedures as provided in NCGS 143-215.6 and 33 USC 1251 et. seq.
11. Signatory Requirements
All applications, reports, or information submitted to the Permit Issuing Authority shall be signed and certified.
All permit applications shall be signed as follows:
(1) For a corporation: by a responsible corporate officer. For the purpose of this Section, a responsible
corporate officer means: (a) a president, secretary, treasurer or vice president of the corporation in
charge of a principal business function, or any other person who performs similar policy or decision
making functions for the corporation, or (b) the manager of one or more manufacturing production or
operating facilities employing more than 250 persons or having gross annual sales or expenditures
exceeding 25 million (in second quarter 1980 dollars), if authority to sign documents has been assigned or
delegated to the manager in accordance with corporate procedures.
(2) For a partnership or sole proprietorship: by a general partner or the proprietor, respectively; or
(3) For a municipality, State, Federal, or other public agency: by either a principal executive officer or ranking
elected official.
b, All reports required by the perrnit and other information requested by the Permit Issuing Authority shall be
signed by a person described above or by a duly authorized representative of that person. A person is a duly
authorized representative only if:
(I) The authorization is made in writing by a person described above;
(2) The authorization specified either an individual or a position having responsibility for the overall
operation of the regulated facility or activity, such as the position of plant manager, operator of a well or
well field, superintendent, a position of equivalent responsibility, or an individual or position having
overall responsibility for environmental matters for the company. (A duly authorized representative may
thus be either a named individual or any individual occupying a named position.); and.
(3) The written authorization is submitted to the Permit Issuing Authority.
c. Certification. Any person signing a document under paragraphs a. or b. of this section shall make the
following certification:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or
supervision in accordance with a system designed to assure that qualified personnel properly gather and
evaluate the information submitted. Based on my inquiry of the person or persons who manage the system,
or those persons directly responsible for gathering the information, the information submitted is, to the best
of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for
submitting false information, including the possibility of fines and imprisonment for knowing violations."

Part 11
Page 6 of 11
12. Permit Actions
This permit may be modified, revoked and reissued, or terminated for cause. The filing of a request by the
permittee for a permit modification, revocation and reissuance, or termination, or a notification of planned
changes or anticipated noncompliance does not stay any permit condition.
13. Permit Modification, Revocation and Rcissuance, or Termination
The issuance of this permit does not prohibit the permit issuing authority from reopening and modifying the
permit, revolting and reissuing the permit, or terminating the permit as allowed by the laws, rules, and regulations
contained in Title 40, Code of Federal Regulations, Parts 122 and 123; Title 15A of the North Carolina
Administrative Code, Subchapter 2H .0100; and North Carolina General. Statute I43-215.1 et. al.
14. Previous Permits
All previous National Pollutant Discharge Elimination System Permits issued to this facility, whether for
operation or discharge, are hereby revoked by issuance of this permit. "lMie exclusive authority to operate this
facility arises under this permit. The authority to operate the facility under previously issued permits bearing this
number is no longer effective. 1 The conditions, requirements, terms, and provisions of this permit authorizing
discharge under the National Pollutant Discharge Elimination System govern discharges from this facility.
SgCT4ON C. OPERATION A.ND MAINTENANCEOF POLLUTION CONTROLS
1. Certified. Operator
Pursuant to Chapter 90A-44 of North Carolina General Statutes, and upon classification of the facility by the
Certification Commission, the permittee shall employ a certified wastewater treatment plant operator in
responsible charge (ORC) of the wastewater treatment facilities. Such operator must hold a certification of the
grade equivalent to or greater than the classification assigned to the wastewater treatment facilities by the
Certification. Commission. The permittee must also employ a certified back-up operator of the appropriate type
and any grade to comply with the conditions of Tide 15A NCAC Chapter 8G .0200. The ORC of the facility
must visit each Class I facility at least weekly and each Class II, III, and IV facility at least daily, excluding
weekends and holidays, and must properly manage and document daily operation and maintenance of the facility
and must comply with all other conditions of Tide 15A, NCAC Chapter SG .0200. Once the facility is classified,
the permittee shall submit a letter to the Certification Commission which designates the operator in responsible
charge within thirty days after the wastewater treatment facilities are 50% complete.
2r Proper Operation and Mainteoa,nce
The permittee shall at all times properly operate and maintain all facilities and systems of treatment and control
(and related appurtenances) which are installed or used by the permittee to achieve compliance with the
conditions of this permit. Proper operation and maintenance also includes adequate laboratory controls and
appropriate quality assurance procedures. This provision requires the operation of back-up or auxiliary facilities
or similar systems which are installed by a permittee only when the operation is necessary to achieve compliance
with the conditions of the permit.
3.N_eed to Halt or Reduce not a Defense
It shall not be a defense for a permittee in an enforcement action that it would have been necessary to halt or
reduce the permitted activity in order to maintain compliance with the condition of this permit.
4. Jiypassing of Tretrrtent Facilities
a. Definitions
(1) "Bypass' means the known diversion of waste streams from any portion of a treatment facility including
the collection system, which is not a designed or established or operating mode for the facility.
(2) "Severe property damage" means substantial physical damage to property, damage to the treatment
facilities which causes them to become inoperable, or substantial and permanent loss of natural resources
which can reasonably be expected to occur in the absence of a bypass. Severe property damage does not
mean economic loss caused by delays in production.

Part II
Page 7 ()Ill
4. b. Bypass not exceeding limitations.
The permittee may allow any bypass to occur which does not cause effluent limitations to be exceeded, but
only if it also is for essential maintenance to assure efficient operation. These bypasses are not subject to the
provisions of Paragraphs c. and d. of this section.
c. Notice
(1) Anticipated bypass. If the permittee knows in advance of the need for a bypass, it shall submit prior
notice, if possible at least ten days before the date of the bypass; including an evaluation of the
anticipated quality and affect of the bypass.
(2) Unanticipated bypass. The, permittee shall submit notice of an unanticipated bypass as required in Part II,
E. 6. of this permit. (24 hour notice).
d. Prohibition of Bypass
(I) Bypass is prohibited and the Permit Issuing Authority may take enforccrnent action against a permittee
for bypass, unless:
(A) Bypass was unavoidable to prevent loss of life, personal injury or severe propert-y damage;
(B) There were no feasible alternatives to the bypass, such as the use of auxiliary treatment facilities,
retention of untreated wastes or maintenance during normal periods of equipment downtime. This
condition is not satisfied if adequate backup equipment should have been installed in the exercise of
reasonable engineering judgment to prevent a bypass which occurred during normal periods of
equipment downtime or preventive maintenance; and
(C) The permittee submitted notices as required under Paragraph c. of this section.
(2) The Permit Issuing Authority may approve an anticipated bypass, after considering its adverse affects, if
the Permit Issuing Authority determines that it will meet the three conditions listed above in Paragraph
d. (1) of this section.
a. Definition: "Upset" means an exceptional incident in which there is unintentional and temporary
noncompliance with technology based permit effluent limitations because of factors beyond the reasonable
control of the permittee. An upset does not include noncompliance to the extent caused by operational
error, improperly designed treatment facilities, inadequate treatment facilities, lack of preventive maintenance,
or careless or improper operation.
b. Effect of an upset: An upset constitutes an affirmative defense to an action brought for noncompliance
with such technology based permit effluent limitations if the requirements of paragraph c, of this condition
are met. No determination made during administrative review of claims that noncompliance was caused by
upset, and before an action for noncompliance, is final administrative action subject to judicial review.
c. Conditions necessary for a demonstration of upset: A permittee who wishes to establish the
affirmative defense of upset shall demonstrate, through properly signed, contemporaneous operating logs, or
other relevant evidence that:
(1) An upset occurred and that the permittee can identify the cause(s) of the upset;
(2) The permittee facility was at the time being properly operated; and
(3) The permittee submitted notice of the upset as required in Part II, E. 6. (b) (B) of this permit.
(4) The permittee complied with any remedial measures required under Part II, B. 2. of this permit.
d. Burden of proof: In any enforcement proceeding the per
upset has the burden of proof.
ee seeking to establish the occurrence of an

Part II
Page 8of11
6. Removed Substances
Solids, sludges, filter backwash, or other pollutants removed in the course of treatment or control of wastewaters
shall be utilized/disposed of in accordance with NCGS 143-215.1 and in a manner such as to prevent any pollutant
from such materials from entering waters of the State or navigable wavers of the United States. The permittee
shall comply with all existing federal regulations governing the disposal of sewage sludge. Upon promulgation of
40 CFR Part 503, any permit issued by the Pertnit Issuing Authority for the utilization/disposal of sludge may be
reopened and modified, or revoked and reissued, to incorporate applicable requirements at 40 CFR Part 503.
The permittee shall comply with applicable 40 CFR Part 503 Standards for the Use and Disposal of Sewage
Sludge (when promulgated) within the time provided in the regulation, even if the permit is not modified to
incorporate the requirement. The permittee shall notify the Permit. Issuing Authority of any significant change in
its sludge use or disposal practices.
7. Power Failures
The permittee is responsible for maintaining adequate safeguards as required by DEM Regulation, Title 15A,
North Carolina Administrative Code, Subchapter 2H, .0124 Reliability, to prevent the discharge of untreated or
inadequately treated wastes during electrical power failures either by means of alternate power sources, standby
generators or retention of inadequately treated effluent.
SECTION D. MONITORING ;D 'CORDS
1. Representative Sampling
Samples collected and measurements taken, as required herein, shall be characteristic of the volume and nature of
the permitted discharge. Samples collected at a frequency less than daily shall be taken on a day and time that is
characteristic of the discharge over the entire period which the sample represents. All samples shall be taken at
the monitoring points specified in this permit and, unless otherwise specified, before the effluent joins or is
diluted by any other wastestream, body of water, or substance. Monitoring points shall not be changed without
notification to and the approval of the Permit Issuing Authority.
Reporting
Monitoring results obtained during the previous month(s) shall be summarized for each month and reported on a
monthly Discharge Monitoring Report (DMR) Form (DEM No. MR 1, 1.1, 2, 3) or alternative forms approved by
the Director, DEM, postmarked no later than the 30th day following the completed reporting period.
The first DMR is due on the last day of the month following the issuance of the permit or in the case of a new
facility, on the last day of the rnonth following the commencement of discharge. Duplicate signed copies of
these, and all other reports required herein, shall be submitted to the fallowing address:
NC DENR / Division of Water Quality / Water Quality Section
ATTENTION: Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Flow Measurements
Appropriate flow measurement devices and methods consistent with accepted scientific practices shall be selected
and used to ensure the accuracy and reliability of measurements of the volume of monitored discharges. The
devices shall be installed, calibrated and maintained to ensure that the accuracy of the measurements are
consistent with the accepted capability of that type of device. Devices selected shall be capable of measuring
flows with a maximum deviation of less than 10% from the true discharge rates throughout the range of expected
discharge volumes. Once -through condenser cooling water flow which is monitored by pump logs, or pump
hour meters as specified in Part I of this permit and based on the manufacturer's pump curves shall not be
subject to this requirement.

• Part If
Page 9 of 11
4. Test Procedures
Test procedures for the analysis of pollutants shall conform to the EMC regulations published pursuant to
NCGS I43-215.63 et. seq, the Water and Air Quality Reporting Acts, and to regulations published pursuant to
Section 304(0, 33 USC 1314, of the Federal Water Pollution Control Act, as Amended, and Regulation 40 CFR
136; or in the case of sludge use or disposal, approved under 40 CFR 136, unless otherwise specified in 40 CFR
503, unless other test procedures have been specified in this permit.
To meet the intent of the monitoring required by this permit, all test procedures must produce minimum
detection and reporting levels that are below the permit discharge requirements and all data generated must be
reported down to the minimum, detection or lower reporting level of the procedure. If no approved methods are
determined capable of achieving minimum detection and reporting levels below permit discharge requirements,
then the most sensitive (method with the lowest possible detection and reporting level) approved method must
be used.
Penalties for _ ampering
The Clean Water Act provides that any person who falsifies, tampers with, or knowingly renders inaccurate, any
monitoring device or method required to be maintained under this permit shall, upon conviction, be punished by
a fine of not more than $I0,000 per violation, or by imprisonment for not more than two years per violation, or
by both. If a conviction of a person is for a violation committed after a first conviction of such person under this
paragraph, punishment is a fine of not more than $20,000 per day of violation, or by imprisonment of not more
than 4 years, or both.
6. Records Retention
Except for records of monitoring information required by this permit related to the permitte&s sewage sludge use
and disposal activities, which shall be retained for a period of at least five years (or longer as required by 40 CFR
503), the permittee shall retain records of all monitoring information, including all calibration and maintenance
records and all original strip chart recordings for continuous monitoring instrumentation, copies of all reports
required by this permit, for a period of at least 3 years from the date of the sample, measurement, report or
application. This period may be extended by request of the Director at any time.
Recording Results
For each measurement or sample taken pursuant to the requirements of this permit, the permittee shall. record
the following information:
a.
b.
c.
d.
The date, exact place, and time of sampling or measurements;
The individuals) who performed the sampling or measurements;
The date(s) analyses were performed;
The individual(s) who performed the analyses;
The analytical techniques or methods used; and
The results of such analyses.
Inspection and Entry
The permittee shall allow the Director, or an authorized representative (including an authorized contractor acting
as a representative of the Director), upon the presentation of credentials and other documents as may be required
by law, to;
b.
d.
Enter upon the permitree's premises where a regulated
records must be kept under the conditions of this permit;
Have access to and copy, at reasonable times, any records that
permit;
Inspect at reasonable times any facilities, equipment (including monitoring and control equipment), practices,
or operations regulated or required under this perrnit; and
Sample or monitor at reasonable times, for the purposes of assuring permit compliance or as otherwise
authorized by the Clean Water Act, any substances or parameters at any location.
ty or activity is loca
us
ed or conducted, or where
be kept under the conditions of this

Part II
Page 10 of 11.
SECTION E REPORTING RE REQUIREMENTS
Change in Discharge
All discharges authorized herein shall be consistent with the terms and conditions of this permit. The discharge
of any pollutant identified in this permit more frequently than or at a level in excess of that authorized shall
constitute a violation of the permit.
2. Planned Changes
The permittee shall give notice to the Director as soon as possible of any planned physical alterations or additions
to the permitted facility. Notice is required only when:
a. The alteration or addition to a permitted facility may meet one of the criteria for determining whether a
facility is a new source in 40 CFR Part 122.29 (b); or
b. The alteration or addition could significantly change the nature or increase the quantity of pollutants
discharged. This notification applies to pollutants which are subject neither to effluent limitations in the
permit, nor to notification requirements under 40 CFR Part 122.42 (a) (I).
c= The alteration or addition results in a significant change in the pertnittee's sludge use or disposal practices,
and such alternation, addition or change may justify the application of permit conditions that are different
from or absent in the existing permit, including notification of additional use or disposal sites not reported
during the permit application process or not reported pursuant to an approved land application plan.
Anticipated Noncompliance
The permittee shall give advance notice to the Director of any planned changes in the permitted facili
which may result in noncompliance with permit requirements.
ctivity
4, Transfers
This permit is not transferable to any person except after notice to the Director. The Director may require
modification or revocation and reissuance of the permittee and incorporate such other requirements as may be
necessary under the Clean Water Act.
Monitoring Reports.
Monitoring results shall be reported at the intervals specified elsewhere in this permit.
a. Monitoring results must be reported on a Discharge Monitoring Report (DMR) (See Part II. D. 2 of this
permit) or forms provided by the Director for reporting results of monitoring of sludge use or disposal
practices.
b. If the permittee monitors any pollutant more frequently than required by the permit, using test procedures
specified in Part II, D. 4. of this permit or in the case of sludge use or disposal, approved under 40 CFR 503,
or as specified in this permit, the results of this monitoring shall be included in the calculation and reporting
of the data submitted in the DMR.
c. Calculations for all limitations which require averaging of measurements shall utilize an arithmetic mean
unless otherwise specified by the Director in the permit.
ti. Twenty-four flour Reporting
a. The permittee shall report to the central office or the appropriate regional office any noncompliance which
may endanger health or the environment. Any information shall be provided orally within 24 hours from the
time the permittee became aware of the circumstances. A written submission shall also be provided within 5
days of die time the permittee becomes aware of the circumstances. The written submission shall contain a
description of the noncompliance, and its cause; the period of noncompliance, including exact dates and
times, and if the noncompliance has not been corrected, the anticipated time it is expected to continue; and
steps taken or planned to reduce, eliminate, and prevent reoccurrence of the noncompliance..

Part II
Page 11of1l
6. b. The following shall be included as information which must be reported within 24 hours under this paragraph:
(1) Any unanticipated bypass which exceeds any effluent limitation in the permit.
(2) Any upset which exceeds any effluent limitation in the permit.
(3) Violation of a maximum daily discharge limitation for any of the pollutants listed by the Director in the
permit to be reported within 24 hours,
c. The Director may waive the written report on a case -by -case basis for reports under paragraph b. above of
this condition if the oral report has been received within 24 hours.
7. Qthe Noncompliance
The perrnittee shall report all instances of noncompliance not reported under Part II. E. 5 and 6, of this permit at
the time monitoring reports are submitted. The reports shall contain the information listed in Part II. E. 6. of
this permit.
Other Information
Where the pertnittee becomes aware that it failed to submit any relevant facts in a permit application, or
submitted incorrect information in a permit application or in any report to the Director, it shall promptly submit
such facts or information.
Noncom Dance tification
The perrnittee shall report by telephone to either the central office or the appropriate regional office of the
Division as soon as possible, but in no case more than 24 hours or on the next working day following the
occurrence or first knowledge of the occurrence of any of the following
a. Any occurrence at the water pollution control facility which results in the discharge of significant amounts of
wastes which are abnormal in quantity or characteristic, such as the dumping of the contents of a sludge
digester; the known passage of a slug of hazardous substance through the facility; or any other unusual
circumstances.
b. Any process unit failure, due to known or unknown reasons, that render the facility incapable of adequate
wastewater treatment such as mechanical or electrical failures of pumps, aerators, compressors, etc.
c. Any failure of a pumping station, sewer line, or treatment facility resulting in a by-pass directly to receiving
waters without treatment of all or any portion of the influent to such station or facility.
Persons reporting such occurrences by telephone shall also file a written report in letter form within 5 days
following first knowledge of the occurrence.
10. Availability of Reports
Except for data determined to be confidential under NCGS 143-215.3 (a)(2) or Section 308 of the Federal Act, 33
USC 1318, all reports prepared in accordance with the terms shall be available for public inspection at the offices
of the Division of Water Quality. As required by the Act, effluent data shall not be considered confidential.
Knowingly making any false statement on any such report may result in the imposition of criminal penalties as
provided for in NCGS 143-215.1 (b)(2) or in Section 309 of the Federal Act.
11. Pena ties for Falsification of Reports
The Clean Water Act provides that any person who knowingly makes any false statement, representation, or
certification in any record or other document submitted or required to be maintained under this permit, including
monitoring reports or reports of compliance or noncompliance shall, upon conviction, be punished by a fine of
not more than $10,000 per violation, or by imprisonment for not more than two years per violation, or by both.

PART III
OTHER REQUIREMENTS
Construction
No construction of wastewater treatment facilities or additions to add to the planes treatment capacity or to
change the type of process utilized at the treatme t plant shall be begun until Final Plans and Specifications have
been submitted to the Division of Water Quality and written approval and Authorization to Construct has been
issued.
B C,rounc water.Monitoring,
The perrnittee shall, upon
groundwater monitoring as m
the current groundwater standards.
n notice from the
ector of the Division of Water Quality, conduct
gutted to determine the compliance of this NPDES permitted facility with
C. Changes in Discharges of Toxic Substances
The permittee shall notify the Permit Issuing Authority as soon as it knows tar has reason to believ
a. That any activity has occurred or will occur which would to
basis, of any toxic pollutant which is not limited in the permit, if that discharge will exceed the highest of the
following "notification levels";
(1) One hundred micrograms per liter (100 µg/L);
(2) Two hundred micrograms per liter (200 iµg/L) for acrolein and acrylonitrile; five hundred microgra
liter (500 ug/L) for 2.4-dinitrophenol and for 2-methy1-4.6-dinitrophenol; and one milligram per
mg/L) for antimony;
(3) Five (5) times the maxi:m concentration value reported for that pollutant in the permit application..
discharge, on a routine or frequent
per
' (1
b. That any activity has occurred or will occur which would result in any discharge, on a non -routine or
infrequent basis, of a toxic pollutant which is not limited in the permit, if that discharge will exceed the
highest of the following "notification levels";
(1) Five hundred micrograms per liter (500 vigil);
(2) One milligram per liter (1 mg/L) for antimony;
(3) Ten (10) times the maximum concentration value reported for that pollutant in the per application.
D. Requirement, to Continually Evaluate AlternatiVes tt Wastewater Discharge
The perrnittee shall continually evaluate all wastewater disposal alternatives and pursue the rrtost environmentally
sound alternative of the reasonably cost effective alternatives. If the facility is in substantial non-compliance with
the terms and conditions of the NPDES permit or governing rules, regulations or laws, the permittee shall submit
a report in such foam and detail as required by the Division evaluating these alternatives and a plan of action
within sixty (60) days of notification by the Division.
PART IV
ANNUAL ADMINISTERING AND COMPLIANCE MONITRING I'P,E
REQUIREMENTS
A. The perrnittee must pay the annual administering and compliance monitoring fee within 30 (thirty) days
after being billed by the Division. Failure to pay the fee in a timely manner in accordance with 15A
NCAC 2H .0105(b)(4) may cause this Division to initiate action to revoke the permit.

A .4
NCDENR
October 1.0,, 2001
rrell Cook
National Welders Supply Company
P.O. Box 31007
Charlotte, North Carolina 28231-6098
Michael F. Easley
Governor
William G, Ross, Jr,. Secretary
North Carol na Department. of Environment and Natural Resources
Gregory J Thorpe, Ph..D., Acting Director
Division of Water Quality
NC DEPT, OF tN0qMEWr
AND NATURAL RESOURCES
NOCRESNELLE REGIONAL ckna
ENfor: ti,INGENk
OCT 1 2 2001
Subject: NPDES Draft Permit
Permit No. NC0079758 MQU
National Welders Supply Company
Mecklenburg County
Dear Mr. Cook:
UTY SECT
Please find enclosed the DRAFT permit for the subject wastewater treatment plant for your
review and comment. The draft permit includes the following items:
• Deletion of monthly effluent monitoring for alkalinity and hardness. Sufficient data
exists to characterize these parameters.
• Deletion of monthly effluent monitoring for cadmium, since there were no detections (n=-
11 samples) collected between 1/00-8/01.
• Reduction in effluent monitoring from monthly to quarterly for copper, lead, and zinc,
based on the limited detection (1 detection in 11 samples) collected between 1/00-8/01.
• Extend the permit expiration date to 6/30/05 based on the Catawba Basin renewal
schedule.
• Please note that this facility is required to maintain sufficient freeboard in the lime
slurry holding pond to prevent overflowing and bypassing of the wastewater treatment
system. The Division also encourages the facility's investigation into a complete recycle
system.
Please provide any comments you have regarding the draft permit to this office by
November 16, 2001. At this time, the Division is also publishing a notice in the newspapers
of general circulation in Mecklenburg County, inviting public comment on the draft permit.
Following the 30-day comment period, we will review all pertinent comments received and take
appropriate action on the permit renewal.
If you have any questions concerning the draft permit or the other requirements for your
facility, please call me at [phone], extension 543.
cc (w/ DRAFT permit + Fact Sheet):
MCDEP
MRO, Water Quality
NPDES Files
N, C, Division of Water Quality / NPDES Unit
1617 Mail Service Center, Raleigh, NC 27699.1617
Internet: h2o.enrstate.nc.us
S* rely,
om Belnick
NPDES Unit
Phone: [phone]
tax: [phone]
DENR Customer Service Center: 1 800 623-7748

Permit No. NC0079758
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,
National Welders Supply Company
is hereby authorized to discharge wastewater from a facility located at
5313 Old Dowd Road
Charlotte, North Carolina
Mecklenburg County
to receiving waters designated as an unnamed tributary o Taggart Creek in the Catawba
River Basin in accordance with effluent limitations, monitoring requirements, and other
conditions set forth in Parts I, II, HI, and IV hereof.
The permit shall become effective Month xx, xxxx.
This permit and the authorization to discharge shall expire at midnight on June 30, 2005.
Signed this day Month )0c, cxxx
DRAFT
Gregory J. Thorpe, Ph.D., Acting Director
Division of Water Quality
By Authority of the Environmental Management Commission

Permit No. NC0079758
SUPPLEMENT TO PERMIT COVER SHEET
National Welders Supply Company
is hereby authoz ed to:
1. Continue to operate the existing 0.0143 MGD wastewater treatment facility
located at 5313 Old Dowd Road, Charlotte, Mecklenburg County, and
consisting of the following treatment components:
lime storage lagoon
seepage ponds
seepage treatment basin with CO2 neutrala.ation
2. Discharge from said treatment works (via Outfall 001) into an unnamed
tributary to Taggart Creek, a Class C water in the Catawba River Basin, at
the location specified on the attached map.

Latitude:
Longitude:
USGS Quad #:
River Basin #:
Receiving Stream:
Stream Class:
353 13' 34"
80° 55' 43"
G I 5NW
03-08-34
UT Taggart Creek
Nt
National Welders Supply Co.
Mecklenburg County
NC0079758

Perky it Nov NC0079758
SUPPLEMENT TO EFFLUENT LIMITATIONS
AND MONITORING REQUIREMENTS
SPECIAL CONDITIONS
A (2.) ACUTE TOXICITY MONITORING (EPISODIC)
The permittee shall conduct FIVE acute toxicity tests using protocols defined as
definitive in E.P.A. Document EPA/600/4-90/027 entitled "Methods for Measuring
the Acute Toxicity of Effluents to Freshwater and Marine Organisms," The monitoring
shall be performed as a Fathead Minnow (Ptmephales promelas) 24 hour static test.
Effluent samples for self -monitoring purposes must be obtained below all waste
treatment. Sampling and subsequent testing will occur during the first five discrete
discharge events after the effective date of this permit. After monitoring of the first
five toxicity tests, the permittee will conduct one test annually, with the annual period
beginning in January of the next calendar year. The annual test requirement must be
performed and reported by June 30. If no discharge occurs by June 30, notification
will be made to the Division by this date. Toxicity testing will be performed on the
next discharge event for the annual test requirement.
The parameter code for this test is TAE6C. All toxicity testing results required as part
of this permit condition will be entered on the Effluent Discharge Form (MR-1) for the
month in which it was performed, using the appropriate parameter code.
Additionally, DWQ Form AT-1 (original) is to be sent to the following address:
Attention: NC DENR / DWQ / Environmental, Sciences Branch
1621 Mail Service Center
Raleigh, N.C. 27699-1621
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 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.

NCDENR / DWg
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
National Welders Supply Company
NPDES No. NC0079758
acility Narne:
(2.) Permitted Flow,1VYGD:
(3.) Facility Class:
(4.) Facility Status:
(5.) Permit Status:
Receiving Stream:
(2.) Subbasin:
National Welders Supply Company
0.0143 (6.) County:
1 (7.) Regional Office:
Renewal
(9). USGS Topo Site:
UT Taggart Creek
030834
(8.) Drainage Area (mi2):
lecklenburg
Mooresville
Charlo
(3.) Index No.:
(4.) Stream Ca
(5.) 303(d) Listed:
(6.) 305(b) Status:
(7.) Use Support:
Conditions
°poed Contli
NO
(9.) Summer 7g 10
(10.) Winter 7g10 (cfs):
0Q2
2.) Average Flow (cfs):
(13.) YWC (%):
ed into Peit Rene
ions
0
0
0
0
100
it Condition(s)
[delete monthly effluent
monitoring requirement.
Effluent- hardness. alkalinity Sufficient data exists to
characterize these
parameters. There are no
relevant standards requirir
continuation.
Delete mr2tl ly efflrtt nt
monitoring requirernent.
:admiuni
Cadmium was not detected
fall < 2 ug/l) in 11 samples
collected between 1 /00-8/01.
Reduce effluent nronitori
from monthly to quarter]
Extend permit e piratio
to (3/30/05.
date
nt- copper. lead. zinc
Permit Expiration Date
These metals were each
detected only once in 11
samples collected between
1 /00-8/01. No limits
necessary based on values
reported and Action Level
Policy.
Per Catawba Basin renewal
schedule.

NPDES PERMIT FACT SHEET National Welders Supply Company
Page 2 NPDES No. NC0079758
PROD CT NOTES
Summary
• This is a permit renewal for a 0.0143 MGD minor industrial facility located in Mecklenburg
County. The facility manufactures acetylene gas, using calcium carbide as the principal
raw material. The manufacturing process produces an alkaline by-product (carbide lime)
which is generally shipped offsite for use by other industries. However, this material may
still be pumped and stored in an unlined 1.5-acre lime slurry holding pond. Seepage from
this pond and stormwater runoff is then collected by two seepage collection ponds, followed
by a seepage treatment pond where carbon dioxide is added for pH adjustment. Treated
process wastewater is then discharged episodically via Outfall 001. All sanitary wastewater
is piped to the CMUD sewer system.
• The facility discharges treated process wastewater episodically to an unnamed tributary to
Taggart. Creek, which is zero -flow. The receiving stream is not 303(d) listed, and there are
no specific management strategies listed in the 1999 Catawba Basin Plan.
Permit Development
• An individual NPDES permit was originally issued because CMUD would not accept the
lime slurry wastewater. The previous pei quit expired 8/31/01. A permit renewal
application was received 4/10/01.
There are no Federal Effluent Guidelines covering this operation (SIC= 2813). The previous
permit included effluent limitations for flow, TSS, pH, and turbidity. These effluent limits
have been retained in the permit renewal.
The previous permit also included monitoring -only for alkalinity, hardness, metals
(cadmium, copper, lead, zinc), and acute toxicity. These monitoring parameters were
originally included because the applicant indicated that metals may be present in the
wastestream. For this current renewal, the permittee requested that metals monitoring be
dropped from the permit since they are not added to the discharge. Review of the metal
data shows no detections (out of 11 samples) for cadmium., which has been deleted from
this draft permit. Effluent data shows one detection each (out of 11 samples) for copper,
lead, and zinc, so these have been retained on a reduced monitoring frequency (quarterly).
The requirement for alkalinity and hardness data has been deleted, since these parameters
are not limited, and sufficient data exists for effluent characterization . Finally, the acute
toxicity monitoring requirement has been retained.
• The facility is working toward an ultimate goal of a complete recycle system. In 1998,
some piping alterations were added to allow reuse of process water.
DMR Data.
• Effluent Chemical Data, The facility has generally been compliant with its limits for flow,
pH, 15S, and turbidity. There were no detections of cadmium, and one detection of copper,
lead, zinc.
• Effluent Toxicity Data. Between the period 1997-2001, the facility reported acute toxicity
test LC50 results as >100% effluent for 4 of 6 events. The receiving stream is zero flow,
with an instrearn waste concentration of 100%. Therefore, test results indicate a lack of
acute toxicity for the majority of events.
• Compliance Data. Between the period 1/94-3/00. the facility was assessed a civil penalty
of $23,500 in 1998 for failure to report discharge monitoring results.
WLA Data.
• The last WLA was conducted in 1990.
Mooresville Region Data.
• The MR0 staff report dated 7/3/01 stated that the lime slurry holding pond is completely
filled with a solid alkaline material that is generated as a by-product of the manufacturing.
The MR© recommends that the pei inittee address how the solids problem will be addressed
in the future, The draft permit includes language that adequate freeboard will be
maintained in the lagoon to prevent bypassing of the treatment system.
Page 2
ion; October 8, 2001

NPDES PERrvllT FACT SHEET
Page 3
Proposed Schedule for Permit
Draft Permit to Public Notice:
Permit Scheduled to Issue:
State Contact
10 17/01
12/3/01
National Welders Supply Company
NPDES No. NC0079758
If you have any questions on any of the above information or on the attached
permit, please contact TomBelnick at [phone], extension 543.
Copies of the following are attached to provide further information on the permit
development:
• Draft Permit
NPDES Recommendation by:
Regional 01
ce Comments
Regional Recommendation
by:
Reviewed and accepted by:
Regional Supervisor:
NPDES Unit Supervisor:
Signature
Signature
Signature
Date
Date
Page 3
Version: October S. 2001

SOC PRIORITY PROJECT: NO
To: Permits and Engineering Unit
Water Quality Section
Attention: Tom Belnick
Date. July 3, 2001
NPDES STAFF REPORT AND RECOMMENDATIONS
County: Mecklenburg
NPDES Permit No.: NC0073758
MRO No.: 01-84
PART I - GENERAL INFORMATION
Facility and. Address: National Welders Supply Company, Inc.
PO Box 31007
Charlotte, NC 28231
2. Date of Investigation: May 22, 2001
Report Prepared By: B. Dee Browder, Environ. Engr. I.
Person Contacted and Telephone Number: Jack Harrison, [phone]
Directions to Site: National Welders Supply Company, Inc. is located at 5313 Old Dowd
Road in Charlotte.
Discharge Point(s), List for all discharge Points: -
Latitude: 35 ° 13' 34"
Longitude: 80' 55' 43"
Attach a USGS Map Extract and indicate treatment plant site and discharge point on map.
USGS Quad No.: G15NW Charlotte West
7. Site size and expansion area consistent with application: Limited land availahle for
expansion/upgrading.
Topography (relationship to flood plain
receiving water.
n
uded): Rolling with 3-1.0% slopes to
Location of Nearest Dwelling: There are no dwellings within 500 feet of the fact
Y.

Page Two
10. Receiving Stream or Affected Surface Waters: Unnamed tributary to Taggart Creek.
a. Classification: C
b. River Basin and Subbasin No.: Catawba 03-08-34
c. Describe receiving stream features and pertinent downstream uses: The discharge
enters a narrow, deep trench, that enters an unnamed tributary to Taggart Creek.
Downstream users are unknown.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
a. Volume of Wastewater: 0.0143 MGD (Design Capacity)
b. What is the current permitted capacity: 0.0143 MGD
c. Actual treatment capacity of current facility (current design capacity):0.0143
MGD
d. Date(s) and construction activities allowed by previous ATCs issued in the
previous two years: NIA
e. Description of existing or substantially constructed WWT facilities: The existing
WWT facilities consist of a 1.5 acre lime slurry holding pond, two seepage
collection ponds, followed by a treatment pond where carbon dioxide is added for
pH adjustment.
f Description of proposed WWT facilities: N/A
g. Possible toxic impacts to surface waters: There are no toxic impacts expected,
h. Pretreatment Program (POTWs only): Not Needed.
Residual handling and utilization/disposal scheme: None at this time.
a. If residuals are being land applied specify DEM Permit No, N/A.
Residuals Contractor: N/A
Telephone No. ( )NIA
b. Residuals stabilization: PSRP PFRP
c. Landfill: N/A
3. Treatment Plant Classification: No rating given
SIC Code(s):2813
5, MTU Code(s): 52000
Wastewater Code(s): 31

Page Three
PART III - OTHER PERTINENT INFORMATION
Is this facility being constructed with Construction Grant Funds or are any public monies
involved (municipals only)? No
Special monitoring or limitations (including toxicity) requests: None at this tim
Important. SOC/JOC or Compliance Schedule dates: N/A
Submission of plans and specifications
Begin Construction
Complete construction
4. Alternative Analysis Evaluation
a. Spray Irrigation: N/A
b. Connect to regional sewer system: N/A
c. Subsurface: N/A
d. Other disposal options: N/A
PART IV - EVALUATION AND RECOMMENDATIONS
National Welders Supply Company, Inc. requests renewal of their NPDES permit.
Correspondence included with their renewal applications indicates that no solids are generated as
a by product of this operation. A solid alkaline material is generated as a by -product of their
manufacturing. National Welders Supply is trying to develop a market for distribution of this
material as an agricultural liming agent. The lime slurry holding pond is at this point completely
filled with the material. At some point this will interfere with the operation of the WWT
system. Historically their has been some concern regarding both groundwater quality and the
effluent water quality as it relates to the build up of solids in this system.
This office recommends renewal of this permit provided National Welders submit a proposal
describing how the solids problem will be sed in the future.
Signature of Report. Preparer
Water Quality Regional Supervisor
h:sdsrAdsr99+Adsr
1:c;�
ate
Date

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
Michael F. Easley, Governor
William G. Ross, Jr., Secretary
Kerr T. Stevens, Director
April 12,2001
Mr, Terrell Cook
National Welders Supply Company
PO Box 31007
Charlotte, North Carolina 28231
NORTH CAROL] A DPAETMNT OF
ENVIRONMENT AND NATURAL RESOURCES
APR 1 9 2001
JALrr
Subject: NPDES Permit Renewal Application
Permit NC0079758
National Welders Supply Company
Mecklenburg County
Dear Mr, Cook:
The NPDES Unit received your permit renewal application on April 10,2001.. Thank you for submitting
this package.
The permit renewal for this facility has been assigned to Tom Belnick. This staff member will contact you if
further information is needed to complete the permit renewal. Please note that the NPDES Unit has several
vacant positions. This staff shortage has lasted for over a year and is delaying all permit renewals. Our
remaining permit writers are currently reviewing Authorizations to Construct, speculative limit requests,
major permit modifications and 201 plan updates ahead of .permit renewals, This is necessary due to a
variety of factors, including mandatory deadlines in the statutes which govern our program.
If this staff shortage delays reissuance of NC0079758 the existing requirements in your permit will remain
in effect until the perm -it is renewed (or the Division takes other action). We appreciate your patience and
understanding while we operate with a severely depleted staff. If you have any additional questions
concerning renewal of the subject permit, please contact Tom Belnick at [phone], extension 543.
cc: Mooresville Regional Office, Water Quality Section
NPDES File
1617 Mail Service Center, Ra}eigh, North Carolina 27699-1617
Sincerely,
Valery Stephens
Point Source Unit
919 733-5083, extension 520 (tax) 919 7330719
VISIT US ON THE INTERNET http://h2o,enr.stale.nc,usiNPDES Valery,Stephens@ncmail,net

MAJOR SUPPLIERS OF CRYOGENICS AND WELDING EOUIP(k ENT
P.C. Box m31i107
Charlotte, NC 26231-6093
Phone [phone]
Fax [phone]
April 5, 2001
Mr. Charles 11. Weaver, Jr..
NCDENR
Water Quality Section, NPDES Unit
1617 Mail Service Center
Raleigh, NC 2.7699-1.617
RE: NPDES Permit Renewal Package
National Welders Supply Company
Charlotte, North Carolina
NPDES Permit No. NC0O79758
Dear Mr. Weaver:
Enclosed please find the NPDES Permit Renewal Package for National Welders Supply Co afiy.
1 received your "Notice of Violation" letter dated March 27. 2001 and am submitting this renewal
package in order to comply with the requirements set forth in the permit and to avoid an assessment
of civil. penalties. I did not receive the initial permit renewal package that was sent from your
office on January 29, :2001 and that is why we did not submit a permit renewal package by the
March 4, 2001 deadline.
Enclosed in the NPDES permit renewal package are the following;
• Completed application forms (Short Form C)
"No sludge or other solids" letter
Figure 1: Wastewater Pretreatment Flow Diagram
Currently our NPDES permit requires that we monitor for Cadmium, Copper, Lead, and Zinc once
a month if we discharge in that month. However you'll notice that in Section 1.2 of Short Form C
that those substances are not circled. We do not add Cadmium, Copper, Lead, or Zinc to the
discharge and are proposing that they be removed from the required parameters we monitor for
under the renewed permit. In the past twelve (12) months the results for analysis of these metals
has yielded rnostl.y levels that are below the Practical Quantitation Limit (PQL).
If you have any questions, please contact me at [phone] ext. 317, or our environmental
consultants, Pollution, Prevention Engineering, P.A. at [phone].
Sincerely
Nat'
elders Supply Compa
Manager -Compressed Cases
Enclosures

NATIONAL WELDERS
5313 Old Dowd Road
Charlotte, NC. 28208
Fiore 1. Wastewater Pretreatment Flow Diararn
Lime
Slurry
Excess
Water
n
Tanks
CO, Sparger
©utfall
001
Turbidity
Downstream
Sample
Point
Turbidity
Upstream
Semple
Point

State of North Carolina
Department of Environment,
Health and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
Mr. Del Lunsford
National Welders Supply Company
P.O. Box 31007
Charlotte, North. Carolina 28231
unsford:
January 2,197
111
Subject: NPDES Penh Issuance
Permit No. NC0079758
National Welders Supply Company
Mecklenburg County
In accordance with the application for a discharge permit received on March 28, 1996, the Division is
forwarding herewith the subject NPDES permit. This permit is issued pursuant to the requirements of North
Carolina General Statute 143-2.15.1 and the Memorandum of Agreement between North Carolina and the US
Environmental Protection Agency dated December 6,1983,.
If any parts, measurement frequencies or sampling requirements contained in this permit 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 150'B of the
North Carolina General Statutes, and filed with the Office of Administrative Hearings, Post Office Drawer
27447, Raleigh, North Carolina 27611-7447. Unless such demand is made, this decision shall be final and
binding.
Please take notice this perrrtzt is not transferable, Part II, E.4, addresses the requirements to be followed
in case of change in ownership or control of this discharge.
This permit does not affect the legal requirements to obtain other permits which may be required by the
Division of Water Quality or permits required by the Division of Land Resources, Coastal Area Management
Act or any other Federal or Local governmental permit that may be required.
If you have any questions concerning this permit, please contact Paul Clark at telephone number (919) 733-
0. extensiion 580.
Sincerely,.
Ori nal Signed By
David k Goodrich
A. Preston Howard, Jra, P.E..
cc: Central Files
tit 11 itl Ofi
Mr. Roosevelt Childress, EPA
Permits and Engineering Unit
Facility Assessment Unit
Aquatic Survey & Toxicology Unit
P.Q. Box 29535, Raleigh, North Carolina 27626-0535
An Equal Opportunity Affirmative Action Employer
Telephone (91
50% recycled
73
FAX [phone]
onsumer paper

Permit No. NCOO79758
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTI HEALTH, 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 prornulgated and adopted by the North Carolina Environmental Management
Commission, and the Federal. Water Pollution Control Act, as amended,
National Welders Supply Company, Inc..
is hereby authorized to discharge wastewater from a facility located at
5313 old Dowd. Road
Charlotte
Mecklenburg County
to receiving waters designated as an unnamed tributary to Taggart Creek in the Catawba River Basin
in accordance with effluent limitations, monitoring requirements, and other conditions set forth in Parts 1,
II, III, and IV hereof.
The per
This pe
shall become effective February 1, 1997
and the authorization to discharge shall expire at midnight on August 31, 2001
Signed this day January 2, 1997
,girl Signed By
v d A. Goodrich
A, Preston. Howard, Jr., P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission.

SUPPLEMENT TO PERMIT COVER SHEET
National Welders Supply Company, Inc.
is hereby authorized to:
Permit No. NC0079758
1, Continue to operate an existing 0.0143 MGD wastewater treatment facility consisting of a
lime slurry holding lagoon andneutralization pond utilizing CO2 gas. Wastewater treatment
facility is located at 5313 Old Dowd Road, Charlotte, Mecklenburg County (See Part III of
this permit), and
2. Discharge wastewater from said treatment works at the location specified on the attached
map into an unnamed tributary of Taggart Creek which is classified Class C waters in the
Catawba River Basin.

ROAD CLASSIFICATION
PRIMARY HIGHWAY
HARD SURFACE IMME
SECONDARY HIGHWAY
HARD SURFACE C
UGHT-DUTY ROAD, HARD OR
IMPROVED SURFACE
UNIMPROVED ROAD
Latitude 35°1'34" Longitude 8055'43"
Map # G 15NW Sub -basin E30834
Stream Class C
Receiving Stream UT to Tagart Creek
Design Q Q.0143 MGP Permit expires 8/31/01
SCALE 1:24 000
© 1 MILE
7000 FEET
L4 1 KILOMETER
CONTOUR INTERVAL 10 FEET
National Welders Supply Co.
NC0079758
Mecklenburg County

A (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS Permit No. NC0079758
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee Is authorized to discharge from outfall serial number
001. Such discharges shall be limited and monitored by the Permittee as specified below:
Flow
Total Suspended Solids
Turbidity2
Alkalinity
Hardness3
Cadmium
Copper
Lead
Zinc
Acute Toxic
0.0143 MGD
30.0 mg/I
45.0 m I
MONITORMOK.REQWREMPOSi
Week
2/month
Weekly
Monthl
Monthly
Monthly*
Monthly*
Monthly
Monthly
Instantaneous
d
Grab
b
Grab
Grab
Grab
Grab
Grab
b
Grab
UrD
E
E
E
Notes:
1 Sample locations: E - Effluent, I - Influent, U - Upstream of discharge , D - Downstream of discharge .
2 The discharge shall not cause the turbidity of the receiving water to exceed 50 NTU. If the turbidity oxceeds these tevels due to natural background
conditions, the discharge level cannot cause any increase in the turbidity in the receiving water.
3 Expressed in mg/1 of CaCO3.
4 If facility discharges less than once/month, metals monitoring is only required during discharge events, but not more than once/month. If facility discharges
at frequency greater than or equal to once/month, then metal monitoring is required once/month. If after at least one year, monitoring data indicate that
metals are not a problem in the discharge, permittee may request a reduction or elimination in metals monitoring.
Acute Toxicity (Fathead Minnow, 24-hour) Monitoring, Episodic, See Supplement to Effluent Limitations and Monitoring Requirements - Special
Conditions page A (2).
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.
Special permit conditions applicable to the subject facility are listed on the Supplement to Effluent Limitations and Monitoring Requirements - Special
Conditions page.

Permit No. NC0079758
SUPPLEMENT TO EFFLUENT LIMITATIONS AND MONITORING
REQUIREMENTS
SPECIAL CONDITIONS PAGE
A (2) ACUTE TOXICITY MONITORING (EPISODIC)
The permittee shall conduct FIVE acute toxicity tests using protocols defined as defmitivee in
E.P.A. Document EPA/600/4-90/027 entitled "Methods for Measuring the Acute Toxicity of
Effluents to Freshwater and Marine Organisms." The monitoring shall be performed as a Fathead
Minnow (Pimephales promelas) 24 hour static test. Effluent samples for self -monitoring purposes
must be obtained below all waste treatment. Sampling and subsequent testing will occur during the
first five discrete discharge events after the effective date of this permit. After monitoring of the
first five toxicity tests, the perrnittee will conduct one test annually, with the annual period
beginning in January of the next calendar year. The annual test requirement must be performed and
reported by June 30. If no discharge occurs by June 30, notification will be made to the Division
by this date. Toxicity testing will be performed on the next discharge event for the annual test.
requirement.
The parameter code for this test is TAE6C. All toxicity testing results required as part of this permit
condition will be entered on the Effluent Discharge Form (MR-1) for the month in which it was
performed, using the appropriate parameter code. Additionally, DWQ Form AT-1 (original) is to
be sent to the following address:
Attention: Environmental Sciences Branch
North Carolina Division of
Water Quality
4401 Reedy Creek Rd.
Raleigh, N.C. 27607
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 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.
Failure to submit suitable test results will constitute noncompliance with monitoring requirements.
EAM Fathead 24 Version 3/96

PART I
le of Compliance
1. The permittee shall comply with Final Effluent Limitations specified for discharges in accordance
with the following schedule:
Permittee shall comply with Final Effluent Limitations by the effective date of the permit unless
specified below.
2. Permittee shall at all times provide the operation and maintenance necessary to operate the
existing facilities at optimum efficiency.
. No later than 14 calendar days following a date identified in the above schedule of compliance,
the perrnittee shall submit either a report of progress or, in the case of specific actions being
required by identified dates, a written notice of compliance or noncompliance. In the latter case,
the notice shall include the cause of noncompliance, any remedial actions taken, and the
probability of meeting the next schedule requirements.

Part II
Page 1 o 14
PART II
STANDARD CONDITIONS FOR NPDES PERMITS
SECTION A. DEFINITIONS
1. Permit Issuing Ajithority
The Director of the Division of Water Quality,
2. DEM or the Division'
Means the Division of Water Quality, Department of Environment, Health and Natural Resources.
Used herein means the North Carolina Environmental Manage
4. Act or "the Act"
n
Co ion.
The Federal Water Pollution Control Act, also known as the Clean Water Act, as amended, 33 USC
1251, et. seq.
Mass/Day Measurement)
a . The "monthly average discharge" is defined as the total mass of all daily discharges sampled
and/or measured during a calendar month on which daily discharges are sampled and
measured, divided by the number of daily discharges sampled and/or measured during such
month. It is therefore, an arithmetic mean found by adding the weights of the pollutant found
each day of the month and then dividing this sum by the number of days the tests were
reported. The limitation is identified as "Monthly Average" in Part I of the permit.
b. The "weekly average discharge" is defined as the total mass of all daily discharges sampled
and/or measured during the calendar week (Sunday - Saturday) on which daily discharges are
sampled and measured, divided by the number of daily discharges sampled and/or measured.
during such week. It is, therefore, an arithmetic mean found by adding the weights of
pollutants found each day of the week and then dividing this sum by the number of days the
tests were reported. This limitation is identified as 'Weekly Average" in Part I of the permit.
c. The "maximum daily discharge" is the total mass (weight) of a pollutant discharged during a
calendar day. If only one sample is taken during any calendar day the weight of pollutant
calculated from it is the "maximum daily discharge." This limitation is identified as "Daily
Maximum,n Part I of the permit.
d. The "average annual discharge" is defined as the total mass of all daily discharges sampled
and/or measured during the calendar year on which daily discharges are sampled and
measured, divided by the number of daily discharges sampled and/or measured during such
year. It is, therefore, an arithmetic mean found by adding the weights of pollutants found each
day of the year and then dividing this sum by the number of days the tests were reported. This
limitation is defined as "Annual Average" in Part I of the permit.

Part II
Page 2 of J 4
6. Concentration Measurement
a. The "average monthly concentration," other than for fecal coliform bacteria, is the sum of the
concentrations of all daily discharges sampled and/or measured during a calendar month on
which daily discharges are sampled and measured, divided by the number of daily discharges
sampled and/or measured during such month (arithmetic mean of the daily concentration
values). The daily concentration value is equal to the concentration of a composite sample or in
the case of grab samples is the arithmetic mean (weighted by flow value) of all the samples
collected during that calendar day. The average monthly count for fecal coliform bacteria is
the geometric mean of the counts for samples collected during a calendar month. This
limitation is identified as "Monthly Average" under '"Other Limits" in Part I of the permit.
b. The "average weekly concentration," other than for fecal coliform bacteria, is the sum of the
concentrations of all daily discharges sampled and/or measured during a calendar week
(Sunday/Saturday) on which daily discharges are sampled and measured divided by the
number of daily discharges sampled and/or measured during such week (arithmetic mean of the
daily concentration values). The daily concentration value is equal to the concentration of a
composite sample or in the case of grab samples is the arithmetic mean (weighted by flow
value) of all the samples collected during that calendar day. The average weekly count for
fecal coliform bacteria is the geometric mean of the counts for samples collected during a
calendar week. This limitation is identified as "Weekly Average" under "Other Limits" in
Part I of the permit.
c. The "maximum daily concentration" is the concentration of a pollutant discharge during a
calendar day. If only one sample is taken during any calendar day the concentration of
pollutant calculated from it is the "Maximum Daily Concentration". It is identified as "Daily
Maximum" under '''Other Limits" in Part I of the permit.
d. The "average annual concentration," other than for fecal coliform bacteria, is the sum of the
concentrations of all daily discharges sampled and/or measured during a calendar year on
which daily discharges are sampled and measured divided by the number of daily discharges
sampled and /or measured during such year (arithmetic mean of the daily concentration
values). The daily concentration value is equal to the concentration of a composite sample or in
the case of grab samples is the arithmetic mean (weighted by flow value) of all the samples
collected during that calendar day . The average yearly count for fecal coliform bacteria is the
geometric mean of the counts for samples collected during a calendar year. This limitation is
identified as "Annual Average" under "Other Limits" in Part I of the permit.
e. The "daily average concentration" (for dissolved oxygen) is the minimum allowable amount of
dissolved oxygen required to be available in the effluent prior to discharge averaged over a
calendar day. If only one dissolved oxygen sample is taken over a calendar day, the sample is
considered to be the "daily average concentration" for the discharge. It is identified as "daily
average" in the text of Part I.
g.
The "quarterly average concentration" is the average of all samples taken over a calendar
quarter. It is identified as "Quarterly Average Limitation" in the text of Part I of the permit.
A calendar quarter is defined as one of the following distinct periods: January through March,
April through June, July through September, and October through December.

Part II
Page 3 of 14
7. Other. Measurements
Flow, (MGD): The flow limit expressed in this p
monthly. It is determined as the arithmetic mean
calendar month.
t is the 24 hours average flow, averaged
he total daily flows recorded during the
b. An "instantaneous flow measurement" is a measure of flow taken at the time of sampling, when
both the sample and flow will be representative of the total discharge.
c. A "continuous flow measurement" is a measure of discharge flow from the facility which occurs
continually without interruption throughout the operating hours of the facility. Flow shall be
monitored continually except for the infrequent times when there may be no flow or for
infrequent maintenance activities on the flow device.
8. Types of Samples
a. Composite Sample: A composite sample shall consist of:
(1) a series of grab samples collected at equal time intervals over a 24 hour period of discharge
and combined proportional to the rate of flow measured at the time of individual sample
collection, or
(2) a series of grab samples of equal volume collected over a 24 hour period with the time
intervals between samples determined by a preset number of gallons passing the sampling
point. Flow measurement between sample intervals shall be determined by use of a flow
recorder and totalizer, and the present gallon interval between sample collection fixed at
no greater than 1/24 of the expected total daily flow at the treatment system, or
(3) a single, continuous sample collected over a 24 hour period proportional to the rate of flow.
In accordance with (1) above, the time interval between influent grab samples shall be no
greater than once per hour, and the time interval between effluent grab samples shall be no
greater than once per hour except at wastewater treatment systems having a detention time of
greater than 24 hours. In such cases, effluent grab samples may be collected at time intervals
evenly spaced over the 24 hour period which are equal in number of hours to the detention time
of the system in number of days. However, in no case may the time interval between effluent
grab samples be greater than six (6) hours nor the number of samples less than four (4) during a
24 hour sampling period.
b. Grab Sample: Grab samples are individual samples collected over a period of time not
exceeding 15 minutes,; the grab sample can be taken manually. Grab samples must be
representative of the discharge or the receiving waters.
9. Calculation of Means
a Arithmetic Mean: The arithmetic mean of any set of values is
values divided by the number of individual values.
b. Geometric Mean: The geometric mean of any set of values is the Nth root of the product of the
individual values where N is equal to the number of individual values. The geometric mean is
equivalent to the antilog of the arithmetic mean of the logarithms of the individual values.
For purposes of calculating the geometric mean, values of zero (0) shall be considered to be one
(1).
ion of the individual
c. Weighted by Flow Value: Weighted by flow value means the summation of each concentration
times its respective flow divided by the summation of the respective flows.

Part II
Page 4 o l4
10. Calendar Day
A calendar day is defined as the period from midnight of one day until midnight of the next day.
However, for purposes of this permit, any consecutive 24-hour period that reasonably represents
the calendar day may be used for sampling.
Hazardous Substance
A hazardous substance means any substance designated under 40 Part 116 pursuant to Section
311 of the Clean Water Act.
12. Toxic Pollutant
A toxic pollutant is any pollutant listed as toxic under Section 307(a)(1) of the Clean Water Act.
SF4TI©N B. GENERAI.a_cONDfJONS
1. Duty to Comply
The permittee must comply with all conditions of this permit. Any permit noncompliance
constitutes a violation of the Clean Water Act and is grounds for enforcement action; for permit
termination, revocation and reissuance, or modification; or denial of a permit renewal application.
a. The permittee shall comply with effluent standards or prohibitions established under section
307(a) of the Clean Water Act for toxic pollutants and with standards for sewage sludge use or
disposal established under section 405(d) of the Clean Water Act within the time provided in
the regulations that establish these standards or prohibitions or standards for sewage sludge
use or disposal, even if the permit has not yet been modified to incorporate the requirement.
b. The Clean Water Act provides that any person who violates a permit condition is subject to a
civil penalty not to exceed $25,000 per day for each violation. Any person who negligently
violates any permit condition is subject to criminal penalties of $2,500 to $25,000 per day of
violation, or imprisonment for not more than 1 year, or both. Any person who knowingly
violates permit conditions is subject to criminal penalties of $5,000 to $50,000 per day of
violation, or imprisonment for not more than 3 years, or both. Also, any person who violates a
permit condition may be assessed an administrative penalty not to exceed $1.0,000 per violation
with the maximum amount not to exceed $125,000, [Ref: Section 309 of the Federal Act 33
US.C. 1319 and 40 CFR 122.41 (a)]
c. Under state law, a civil penalty of not more than ten thousand dollars ($10,000) per violation
may be assessed against any person who violates or fails to act in accordance with the terms,
conditions, or requirements of a permit. [Ref; North Carolina General Statutes § 143-215.6A]
d. Any person may be assessed an administrative penalty by the Administrator for violating
section 301, 302, 306, 307, 308, 318, or 405 of the Act, or any permit condition or limitation.
implementing any of such sections in a permit issued under section 402 of the Act.
Administrative penalties for Class 1 violations are not to exceed $10,000 per violation, with
the maximum amount of any Class I penalty assessed not to exceed $25,000. Penalties for Class
11 violations are not to exceed $10,000 per day for each day during which the violation
continues, with the maximum amount of any Class 11 penalty not to exceed $125,000.

Part II
Page 5 of 14
2. Duty to Mitigate
The permittee shall take all reasonable steps to minimize or prevent any discharge or sludge use or
disposal in violation of this permit which has a reasonable likelihood of adversely affecting
human health or the environment.
Civil and Criminal Liability
Except as provided in permit conditions on "Bypassing" (Part II, C-4) and "Tower Failures" (Part II,
C-7), nothing in this permit shall be construed to relieve the permittee from, any responsibilities,
liabilities, or penalties for noncompliance pursuant to NCGS 143-215.3, 143-215.6 or Section 309 of
the Federal Act, 33 USC 1319. Furthermore, the permittee is responsible for consequential damages,
such as fish kills, even though the responsibility for effective compliance may be temporarily
suspended.
4. Qii and Hazardous Substance Li?iiity
Nothing in this permit shall be construed to preclude the institution of any legal action or relieve
the permittee from any responsibilities, liabilities, or penalties to which the permittee is or may
be subject to under NCGS 143-215.75 et seq. or Section 311 of the Federal Act, 33 USG 1321.
Furthermore, the permittee is responsible for consequential damages, such as fish kills, even
though the responsibility for effective compliance may be temporarily suspended.
5. Property Rights
The issuance of this permit does not convey any property rights in either real or personal property,
or any exclusive privileges, nor does it authorize any injury to private property or any invasion of
personal rights, nor any infringement of Federal, State or local laws or regulations.
6. Onshore or. Offshore Construction
This permit does not authorize or approve the construction of any onshore or offshore physical
structures or facilities or the undertaking of any work in any navigable waters.
7. S verability
The provisions of this permit are severable, and if any provision of this permit, or the application
of any provision of this permit to any circumstances, is held invalid, the application of such
provision to other circumstances, and the remainder of this permit, shall not be affected thereby.
8. Duty to Provide Information
The permittee shall furnish to the Permit Issuing Authority, within a reasonable time, any
information which the Permit Issuing Authority may request to determine whether cause exists for
modifying, revoking and reissuing, or terminating this permit or to determine compliance with this
permit. The permittee shall also furnish to the Permit Issuing Authority upon request, copies of
records required to be kept by this permit.
9. Duty to Reapply
If the permittee wishes ttr continue an activity regulated by this pa
this permit, the permittee must apply for and obtain a new permit.
ion date of

Part II
Page 6 of 14
10. Expiration of Permit
The permittee is not authorized to discharge after the expiration date, In order to receive
automatic authorization to discharge beyond the expiration date, the perrittee shall submit such
information, farms, and fees as are required by the agency authorized to issue permits no later than.
180 days prior to the expiration date. Any permittee that has not requested renewal at least 180
days prior to expiration, or any permittee that does not have a permit after the expiration and has
not requested renewal at least 180 days prior to expiration, will subject the permittee to enforcement
procedures as provided in NCGS 143-215.6 and 33 USC 1251 et. seq.
11. Signatory Requirements
All applications, reports, or information submitted to the Permit Issuing Authority shall
and certified.
a. All permit applications shall be signed as follows:
(1) For a corporation: by a responsible corporate officer. For the purpose of this Section, a
responsible corporate officer means: (a) a president, secretary, treasurer or vice president
of the corporation in charge of a principal business function, or any other person who
performs similar policy or decision making functions for the corporation, or (b) the manager
of one or more manufacturing production or operating facilities employing more than 250
persons or having gross annual sales or expenditures exceeding 25 million (in second quarter
1980 dollars), if authority to sign documents has been assigned or delegated to the manager
in accordance with corporate procedures.
(2) For a partnership or sole proprietorship: by a general partner or the proprietor,
respectively; or
(3) For a municipality, State, Federal, or other public agency: by either a principal executive
officer or ranking elected official.
b. All reports required by the permit and other information requested by the Permit Issuing
Authority shall be signed by a person described above or by a duly authorized representative of
that person. A person is a duly authorized representative only if:
(1) The authorization is made in writing by a person described above;
(2) The authorization specified either an individual or a position having responsibility for the
overall operation of the regulated facility or activity, such as the position of plant
manager, operator of a well or well field, superintendent, a position of equivalent
responsibility, or an individual or position having overall responsibility for environmental
matters for the company. (A duly authorized representative may thus be either a named
individual or any individual occupying a named position.); and
(3) The written authorization is submitted to the Permit Issuing Authority.
c. Certification. Any person signing a document under paragraphs a. or b. of this section shall
make the following certification:
certify, under penalty of law, that this document and all attachments were prepared under
my direction or supervision in accordance with a system designed to assure that qualified
personnel properly gather and evaluate the information submitted. Based on my inquiry of the
person or persons who manage the system, or those persons directly responsible for gathering
the information, the information submitted is, to the best of my knowledge and belief, true,
accurate, and complete. I am aware that there are significant penalties for submitting false
information, including the possibility of fines and imprisonment for knowing violations."

Part II
Page 7 of 14
12. Permit Acti
This permit may be modified, revok
by the permittee for a permit m
notification of planned changes or an
and reissued, or terminated for cause. The filing of a request
ification, revocation and reissuance, or termination, or a
ed noncompliance does not stay any permit condition.
The issuance of this permit does not prohibit the permit issuing authority from reopening and
modifying the permit, revoking and reissuing the permit, or terminating the permit as allowed by
the laws, rules, and regulations contained in Title 40, Code of Federal Regulations, Parts 122 and
123; Title 15A of the North Carolina Administrative Code, Subchapter 2H .0100; and North
Carolina General Statute 143-215.1 et. al.
14. Previous Permits
All previous National Pollutant Discharge Elimination System Permits issued to this facility,
whether for operation or discharge, are hereby revoked by issuance of this permit. [The exclusive
authority to operate this facility arises under this permit. The authority to operate the facility
under previously issued permits bearing this number is no longer effective. ] The conditions,
requirements, terms, and provisions of this permit authorizing discharge under the National
Pollutant Discharge Elimination System govern discharges from this facility.
SECTION C. QJ'EJ .AT1ON AND MAINTENANCE OF J QL,LU1'IQN CONTROL-5
1. CQrtified Operator
Pursuant to Chapter 90A-44 of North Carolina General Statutes, and upon classification of the
facility by the Certification Commission, the permittee shall employ a certified wastewater
treatment plant operator in responsible charge (ORC) of the wastewater treatment facilities. Such.
operator must hold a certification of the grade equivalent to or greater than the classification
assigned to the wastewater treatment facilities by the Certification Commission. The permittee
must also employ a certified back-up operator of the appropriate type and any grade to comply
with the conditions of Title 15A, Chapter 8A .0202. The ORC of the facility must visit each Class I
facility at least weekly and each Class II, I➢l, and IV facility at least daily, excluding weekends
and holidays, and must properly manage and document daily operation and maintenance of the
facility and must comply with all other conditions of Title 15A, Chapter 8A .0202. Once the
facility is classified, the permittee shall submit a letter to the Certification Commission which
designates the operator in responsible charge within thirty days after the wastewater treatment
facilities are 50% complete.
2. Proper Operation and Maintenance
The permittee shall at all times properly operate and maintain all facilities and systems of
treatment and control (and related appurtenances) which are installed or used by the permittee to
achieve compliance with the conditions of this permit. Proper operation and maintenance also
includes adequate laboratory controls and appropriate quality assurance procedures. This provision
requires the operation of back-up or auxiliary facilities or similar systems which are installed by a
permittee only when the operation is necessary to achieve compliance with the conditions of the
permit.

Part II
Page 8ofI4
3. _Nevi to I{lt or Reduce not a Dense
It shall not be a defense for a permit
to halt or reduce the permitted activi
permit.
4. Bypassing of Treatment, Faciljti+
a. Definitions
an enforcement action that it would have been necessary
order to maintain compliance with the condition of this
(1) "Bypass" means the known diversion of waste streams from any portion of a treatment
facility including the collection system, which is not a designed or established or operating
mode for the facility.
(2) "Severe property damage" means substantial physical damage to property, damage to the
treatment facilities which causes them to become inoperable, or substantial and permanent
loss of natural resources which can reasonably be expected to occur in the absence of a
bypass. Severe property damage does not mean economic loss caused by delays in
production.
b. Bypass not exceeding limitations.
The permittee may allow any bypass to occur which does not cause effluent limitations to be
exceeded, but only if it also is for essential maintenance to assure efficient operation. These
bypasses are not subject to the provisions of Paragraphs c. and d. of this section.
c. Notice
(1) Anticipated bypass. If the permittee knows in advance of the need for a bypass, it shall
submit prior notice, if possible at least ten days before the date of the bypass; including an
evaluation of the anticipated quality and affect of the bypass.
(2) Unanticipated bypass. The permittee shall submit notice of an unanticipated bypass as
required in Part II, B. 6. of this permit. (24 hour notice).
d. Prohibition of Bypass
(1) Bypass is prohibited and the Pe
a permittee for bypass, unless:
wing Au
rit
0
action against
(A) Bypass was unavoidable to prevent loss of life, personal injury or severe property
damage;
(B) There were no feasible alternatives to the bypass, such as the use of auxiliary treatment
facilities, retention of untreated wastes or maintenance during normal periods of
equipment downtime. This condition is not satisfied if adequate backup equipment should
have been installed in the exercise of reasonable engineering judgment to prevent a bypass
which occurred during normal periods of equipment downtime or preventive maintenance;
and
(C) The permittee submitted notices as required under Paragraph c. of this section.
(2) The Permit Issuing Authority may approve an anticipated bypass, after considering its
adverse affects, if the Permit Issuing Authority determines that it will meet the three
conditions listed above in Paragraph d. (1) of this section.

Part II
Page9of 14
5. Upsets
a. Definition.
"Upset " means an exceptional incident in which there is unintentional and temporary
noncompliance with technology based permit effluent limitations because of factors beyond the
reasonable control of the permittee. An upset does not include noncompliance to the extent
caused by operational error, improperly designed treatment facilities, inadequate treatment
facilities, lack of preventive maintenance, or careless or improper operation.
b. Effect of an upset.
An upset constitutes an affirmative defense to an action brought for noncompliance with such
technology based permit effluent limitations if the requirements of paragraph c. of this
condition are met. No determination made during administrative review of claims that
noncompliance was caused by upset, and before an action for noncompliance, is final
administrative action subject to judicial review.
c. Conditions necessary for a demonstration of upset.
A perrnittee who wishes to establish the affirmative defense of upset shall demonstr
through properly signed, contemporaneous operating logs, or other relevant evidence that:
(1) An upset occurred and that the permittee can identify the cause(s) of the upset;
(2) The permittee facility was at the time being properly operated; and
(3) The permittee submitted notice of the upset as required in Part II, E. 6. (b) (B) of this permit.
(4) The perrnittee complied with any remedial measures required under Part II, B. 2. of this
permit.
d. Burden of proof.
In any enforcement proceeding the permi
the burden of proof.
6. Removed Substancrss
ate,
to establish the occurrence of an upset has
Solids, sludges, filter backwash, or other pollutants removed in the course of treatment or control of
wastewaters shall be utilized/disposed of in accordance with NCGS 143-215.1 and in a manner such
as to prevent any pollutant from such materials from entering waters of the State or navigable
waters of the United States. The permittee shall comply with all existing federal regulations
governing the disposal of sewage sludge. Upon promulgation of 40 CFR Part 503, any permit issued.
by the Permit Issuing Authority for the utilization/disposal of sludge may be reopened and
modified, or revoked and reissued, to incorporate applicable requirements at 40 CFR Part 503. The
permittee shall comply with applicable 40 CFR Part 503 Standards for the Use and Disposal of
Sewage Sludge (when promulgated) within the time provided in the regulation, even if the permit
is not modified to incorporate the requirement. The perrnittee shall notify the Permit Issuing
Authority of any significant change in its sludge use or disposal practices.
7. Power Failures
The perrnittee is responsible for maintaining adequate safeguards as required by DEM Regulation,
Title 15A, North Carolina Administrative Code, Subchapter 2H, .0124 Reliability, to prevent the
discharge of untreated or inadequately treated wastes during electrical power failures either by
means of alternate power sources, standby generators or retention of inadequately treated effluent

Part II
Page 1©of 14
SECTION D. MONITORING
1. Representative Sampling
Samples collected and measurements taken, as required herein, shall be characteristic of the
volume and nature of the permitted discharge. Samples collected at a frequency less than daily
shall be taken on a day and time that is characteristic of the discharge over the entire period
which the sample represents. All samples shall be taken at the monitoring points specified in this
permit and, unless otherwise specified, before the effluent joins or is diluted by any other
wastestream, body of water, or substance. Monitoring points shall not be changed without
notification to and the approval of the Permit Issuing Authority.
2. &outing
Monitoring results obtained during the previous month(s) shall be summarized for each month and
reported on a monthly Discharge Monitoring Report (DMR) Form (DEM No. MR 1, 1.1, 2, 3) or
alternative forms approved by the Director, DEM, postmarked no later than the 30th day
following the completed reporting period.
The first DMR is due on the last day of the month following the issuance of the permit or in the case
of a new facility, on the last day of the month fallowing the commencement of discharge.
Duplicate signed copies of these, and all other reports required herein, shall be submitted to the
following address;
Division of Water Quality
Water Quality Section
ATTENTION: Central Files
Post Office Box 29535
Raleigh, North Carolina 27626-0535
Flow Measurements
Appropriate flow measurement devices and methods consistent with accepted scientific practices
shall be selected and used to ensure the accuracy and reliability of measurements of the volume of
monitored discharges. The devices shall be installed, calibrated and maintained to ensure that the
accuracy of the measurements are consistent with the accepted capability of that type of device.
Devices selected shall be capable of measuring flows with a maximum deviation of less than + 10%
from the true discharge rates throughout the range of expected discharge volumes. Once -through
condenser cooling water flow which is monitored by pump logs, or pump hour meters as specified in
Part I of this permit and based on the manufacturer's pump curves shall not be subject to this
requirement.
4. Test Procedure
Test procedures for the analysis of pollutants shall conform to the EMC regulations published
pursuant to NCGS 143-215.63 et. seq, the Water and Air Quality Reporting Acts, and to regulations
published pursuant to Section 304(g), 33 USC 1314, of the Federal Water Pollution Control Act, as
Amended, and Regulation 40 CFR 136; or in the case of sludge use or disposal, approved under 40
CFR 136, unless otherwise specified in 40 CFR 503, unless other test procedures have been specified
in this permit.
To meet the intent of the monitoring required by thus permit, all test procedures must produce
minimum detection and reporting levels that are below the permit discharge requirements and all
data generated must be reported down to the minimum detection or lower reporting level of the
procedure. If no approved methods are determined capable of achieving minimum detection and

Part II
Page 11 of 14
reporting levels below permit discharge requirements, then the most sensitive (method with the
lowest possible detection and reporting level) approved method must be used.
Penalties for a arnpering
The Clean Water Act provides that any person who falsifies, tampers with, or knowingly renders
inaccurate, any monitoring device or method required to be maintained under this permit shall,
upon conviction, be punished by a fine of not more than $10,000 per violation, or by imprisonment for
not more than two years per violation, or by both. If a conviction of a person is for a violation
committed after a first conviction of such person under this paragraph, punishment is a fine of not
more than $20,000 per day of violation, or by imprisonment of not more than 4 years, or both.
ecords Retention
Except for records of monitoring information required by this permit related to the permittee's
sewage sludge use and disposal activities, which shall be retained for a period of at least five
years (or longer as required by 40 CFR 503), the permittee shall retain records of all monitoring
information, including all calibration and maintenance records and all original strip chart
recordings for continuous monitoring instrumentation, copies of all reports required by this permit,
for a period of at least 3 years from the date of the sample, measurement, report or application.
This period may be extended by request of the Director at any time.
'. Revording Results
For each measurement or sample taken pursuant to the requirements of than permit, the
shall record the following information:
a. The date, exact place, and time of sampling or measurements;
b. The individual(s) who performed the sampling or measurements;
c. The date(s) analyses were performed;
d. The individual(s) who performed the analyses;
e. The analytical techniques or methods used; and
f. The results of such analyses.
Inspection and Entry
The permittee shall allow the Director, or an authorized representative (including an authorized
contractor acting as a representative of the Director), upon the presentation of credentials and other
documents as may be required by law, to;
a . Enter upon the permnittee's premises where a regulated facility or activity is located or
conducted, or where revurds must be kept under the conditions of this permit;
b. Have access to and copy, at reasonable times, any records that must be kept under the conditions
of this permit;
c. Inspect at reasonable times any facilities, equipment (including monitoring and control
equipment), practices, or operations regulated or required under this permit; and
d. Sample or monitor at reasonable times, for the purposes of assuring permit compliance or as
otherwise authorized by the Clean Water Act, any substances or parameters at any location.

Part I1
Page 12 of 14
All discharges authorized herein shall be consistent with the terms and conditions of this permit.
The discharge of any pollutant identified in this permit more frequently than or at a level in excess
of that authorized shall constitute a violation of the permit.
2. Planned Changes
The permittee shall give notice to the Director as soon as possible of any planned physical
alterations or additions to the permitted facility. Notice is required only when:
a.
The alteration or addition to a permitted facility may meet one of the
whether a facility is a new source in 40 CFR Part 122.29 (b); or
a
rd
fining
b. The alteration or addition could significantly change the nature or increase the quantity of
pollutants discharged. This notification applies to pollutants which are subject neither to
effluent limitations in the permit, nor to notification requirements under 40 CFR Part 122.42 (a)
(1).
c. The alteration or addition results in a significant change in the pernuttee's sludge use or
disposal practices, and such alternation, addition or change may justify the application of
permit conditions that are different from or absent in the existing permit, including notification
of additional use or disposal sites not reported during the permnit application process or not
reported pursuant to an approved land application plan.
Anticipated Noncompliance
The permittee shall give advance notice to the Director of any pl;
facility or activity which may result in noncompliance with permit
4. Transfers
This permit is not transferable to any person exce
require modification or revocation and reissuan
requirements as may be necessary under the Clean
5. Monitoring Reports
after notice to the Director. The Director may
of the permittee and incorporate such other
ater Act.
Monitoring results shall be reported at the intervals specified elsewhere in this permit.
a. Monitoring results must be reported on a Discharge Monitoring Report (DMR) (See Part II. D. 2
of this permit) or forms provided by the Director for reporting results of monitoring of sludge use
or disposal practices.
b. If the permittee monitors any pollutant more frequently than required by the permit,
procedures specified in Part II, D. 4. of this permit or in the case of sludge use o
approved under 40 CFR 503, or as specified in this permit, the results of this monitoring sl
included in the calculation and reporting of the data submitted in the DMR.
c. Calculations for all limitations which require averaging of measurements shall utilize an
arithmetic mean unless otherwise specified by the Director in the permit.

Part II
Page 13 of 14
6. Twenty-four 1-lour
a . The permittee shall report to the central office or the appropriate regional office any
noncompliance which may endanger health or the envirorunent. Any information shall be
provided orally within 24 hours from the time the pennittee became aware of the
circumstances, A written submission shall also be provided within 5 days of the time the
permittee becomes aware of the circumstances. The written submission shall contain a
description of the noncompliance, and its cause; the period of noncompliance, including exact
dates and times, and if the noncompliance has not been corrected, the anticipated time it is
expected to continue; and steps taken or planned to reduce, eliminate, and prevent reoccurrence
of the noncompliance.
b. The following shall be included as information which must be reported within 24 hours under
this paragraph:
(1) Any unanticipated bypass which exceeds any effluent limitation in the permit.
(2) Any upset which exceeds any effluent limitation in the permit.
(3) Violation of a maximum daily discharge limitation for any of the pollutants listed by the
Director in the permit to be reported within 24 hours.
c, The Director may waive the written report on a case -by -case basis for reports under paragraph
b. above of this condition if the oral report has been received within 24 hours.
7. Other Noncompliance
The permittee shall report all instances of noncompliance not reported under Part IL E. 5 and 6. of
this permit at the time monitoring reports are submitted. The reports shall contain the information
listed in Part II. E. 6. of this permit.
Other Information
Where the permittee becomes aware that it failed to submit any relevant facts in a permit
application, or submitted incorrect information in a permit application or in any report to the
Director, it shall promptly submit such facts or information.
9. Noncompliance Notification
The permittee shall report by telephone to either the central office or the appropriate regional
office of the Division as soon as possible, but in no case more than 24 hours or on the next working
day following the occurrence or first knowledge of the occurrence of any of the folio 'wing:
a Any occurrence at the water pollution control facility which results in the discharge of
significant amounts of wastes which are abnormal in quantity or characteristic, such as the
dumping of the contents of a sludge digester; the known passage of a slug of hazardous substance
through the facility; or any other unusual circumstances.
b. Any process unit failure, due to known or unknown reasons, that render the facility incapable of
adequate wastewater treatment such as mechanical or electrical failures of pumps, aerators,
compressors, etc.
c. Any failure of a pumping station, sewer line, or treatment facility resulting in a by-pass
directly to receiving waters without treatment of all or any portion of the influent to such
station or facility.

Part II
Page 14 of 14
Persons reporting such occurrences by telephone shall also file a written report in letter form within
5 days following first knowledge of the occurrence.
10. Availability. Qf Reports
Except for data determined to be confidential under NCGS 143-215.3(a)(2) or Section 308 of the
Federal Act, 33 USC 1318, all reports prepared in accordance with the terms shall be available for
public inspection at the offices of the Division of Water Quality. As required by the Act, effluent
data shall not be considered confidential. Knowingly making any false statement on any such
report may result in the imposition of criminal penalties as provided for in NCGS 143-215.1(b)(2) or
in Section 309 of the Federal Act.
11. Penalties for Falsification of Reports
The Clean. Water Act provides that any person who knowingly makes any false statement,
representation, or certification in any record or other document submitted or required to be
maintained under this 'permit, including monitoring reports or reports of compliance or
noncompliance shall, upon conviction, be punished by a fine of not :more than $iO,000 per violation,
or by imprisonment for not more than two years per violation, or by both.

PART liI
OTHER REQUIREMENTS
A. Construction
No construction of wastewater treatment facilities or additions to add to the plant's treatment
capacity or to change the type of process utilized at the treatment plant shall be begun until Final
Plans and Specifications have been submitted to the Division of Water Quality and written approval
and Authorization to Construct has been issued.
B. Groundwater Monitoring
The permittee shall, upon written notice from the Director of the Division of Water Quality, conduct
groundwater monitoring as may be required to determine the compliance of this NPDES permitted
facility with the current groundwater standards.
C. Changes in Discharges of Toxic Substance
The permittee shall notify the Permit Issuing Autl
n as it knows or has reason to believe:
a.That any activity has occurred or will occur which would result in the discharge, on a routine or
frequent basis, of any toxic pollutant which is not limited in the permit, if that discharge will
exceed the highest of the following "notification levels";
(1) One hundred micrograms per liter (lib ug/1);
(2)Two hundred micrograms per liter (200 ug/1) for acrolein and acrylonitrile; five hundred
micrograms per liter (500 ug/1) for 2.4-dinitrophenol and for 2-methyl-4.6-dinitrophenol; and
one milligram per liter (1 mg/1) for antimony;
(3) Five (5) times the maximum concentration value reported for that pollutant in the permit
application.
b. That any activity has occurred or will occur which would result in any discharge, on a non -routine
or infrequent basis, of a toxic pollutant which is not limited in the permit, if that discharge will
exceed the highest of the following "notification levels";
(1) Five hundred micrograms per liter (500 ug/1);
(2) milligram per liter {l mg/1) for antimony;
(3) Ten (10) times the maximum concentration value reported for
application.
in the permit
shall continually evaluate all wastewater disposal alternatives and pursue the most.
ntally sound alternative of the reasonably cost effective alternatives. If the facility is in
sutustantial non-compliance with the terms and conditions of the NPDES permit or governing rules,
regulations or laws, the permittee shall submit a report in such form and detail as required by the
Division evaluating these alternatives and a plan of action within sixty (60) days of notification by the
Division.

AN
PART IV
AL ADMINIS G AND CO NCE ONITORING
REQU E
A The permittee ust pay the arirmal ad innermg and compliance monitofing
it i 0 ithirt ,) days after being blued by the Division, Failure to pay the fee in a
canner in accordance with l A ; AC 2H .0105(b)(4) may cause this DiNrision to
initiate action to revoke the permit.;

State of North Carolina
Department of Environment,
Health and Natural Resources
Mooresville Regional Office
James B. Hunt, Jr„ Governor
Jonathan B. Howes, Secretary
E")EHNR
DIVISION OF WATER QUALITY
January 7, 1996
Mr. Del Lunsford
National Welders Supply Company
Post Office Box 31007
Charlotte North Carolina 28231
Subject: NPDES Permit No. NC0079758
National Welders Supply Company
Mecklenburg County, NC
Dear Mr. Lunsford:
Our records indicate that NPDES Permit No. NC0079758 was
issued on January 2, 1996 for the discharge of wastewater to the
surface waters of the State from your facility. The purpose of
this letter is to advise you of the importance of the Permit and
the liabilities in the event of failure to comply with the terms
and conditions of the Permit. If you have not already done so, it
is suggested that you thoroughly read the Permit. Of particular
importance is Page 4.
Page 4 sets forth the effluent limitations and monitoring
requirements for your discharge. Your discharge must not exceed
any of the limitations set forth. The section headed "Monitoring
Requirements" describes the measurement frequencies, sample types
and sampling locations. Upon commencement of your discharge (or
operation), you must initiate the required monitoring. The
monitoring results must be entered on reporting forms furnished or
approved by this Agency. If you have not received these forms,
they should be arriving shortly. If you fail to receive the forms,
please contact this Office as quickly as possible. I have enclosed.
a sample of the "Effluent" reporting form (DEM Form MR -I), plus
instructions for completing the form. It is imperative that all
applicable parts be completed, and the original and one copy be
submitted as required.
Please be advised that an annual administering and compliance
monitoring fee may be required for your facility. You w ll soon be
receiving a statement from our Raleigh Office. It is imperative
that the fee be paid in a timely manner so as to prevent
enforcement action or possible revocation of your permit.
The remaining Parts of the Permit set forth definitions,
general conditions and special conditions applicable to the
operation of wastewater treatment facilities and/or discharge(s).
919 North Main Street,
Mooresville. North Carolina 28115
Voice 704-663-1699
FAX [phone]O40
An Equal Opportunity/Affirmative Action Employer
50% recycled/ 1©% post -consumer paper

Mr. Del Lunsford
January 7, 1997
Page Two
The conditions include special reporting requirements in the event
of noncompliance, bypasses, treatment unit/process failures, etc.
Also addressed are requirements for a certified wastewater
treatment plant operator if you are operating wastewater treatment
facilities. Any changes in operation of wastewater treatment
facilities, quantity and type of wastewater being treated or
discharged, expansions and/or upgrading of wastewater treatment
facilities must be permitted or approved by this Agency.
Failure to comply with the terms and conditions of an NPDES
Permit subjects the Permittee to enforcement action pursuant to
Section 143-215.6 of the North Carolina. General. Statutes. A civil
penalty of up to $10,000 per violation (and/or criminal penalties)
may be assessed for such violations, If you find at any time that
you are unable to comply with the terms and conditions of the
Permit, you should contact this Office immediately. A Consent
Order may be necessary while pursuing action to obtain compliance.
As a final note, an NPDES Permit is normally issued for a
five-year period. Permits are not automatically renewed. Renewal
requests must be submitted to this Agency no later than 180 days
prior to expiration. Please make note of the expiration date of
your Permit. This date is set forth on Page 1 of the Permit. Also
note that NPDES Permits are not automatically transferable. If
you, as the Permittee, cease to need this Permit, then you should
request that the Permit be rescinded or transferred to another
party, if necessary.
As mentioned previously, the purpose of this letter is to
advise you of the importance of your NPDES Permit. Please read the
Permit and contact this Office at 704/663-1.699 in Mooresville if
you have any questions or need clarification. We look forward to
providing any assistance.
Sincerely,
{
Rex Gleason, P. E.
Water Quality Regional Supervisor
Enclosure
DRG:ls

To: Permits and Engineering Unit
Water Quality Section
Date: April 7, 1992
NPDES STAFF REPORT AND RECOMMENDATIONS
County: Mecklenburg
NPDES Permit No.: NC0079758
MRO No.: 90 - 163
PART I - GENERAL INFORMATION
1. Facility and Address: National Welders Supply Company, Inc.
Post Office Box 31007
Charlotte, North Carolina 28231
2. Date of Investigation: October 10, 1990
3. Report Prepared By: G. T. Chen
4. Person Contacted and Telephone Number: Mr. Forest Medlin;
[phone]
5. Directions to Site: National Welders Supply Company, Inc.
is located at 5313 Old Dowd Road, Charlotte, North Carolina.
6. Discharge Point(s), List for all discharge Points:
Latitude: 350 13" 34"
Longitude: 80° 55' 43"
Attach a USGS Map Extract and indicate treatment plant site
and discharge point on map.
USGS Quad No.: G 15 NW USGS Quad Name: Charlotte West
7. Size (land available for expansion and upgrading): Limited
land area available for expansion/upgrading.
8. Topography (relationship to flood plain included): Rolling
with 3-10% slopes to receiving water. The two wastewater
collection ponds may be subject to surface runoff.
9. Location of Nearest Dwelling: One dwelling within 400 feet
of the lime slurry holding lagoon.
10. Receiving Stream or Affected Surface Waters: Unnamed
tributary to Taggart Creek.
a. Classification: C
b. River Basin and Subbasin No.: Catawba and 03-08-34

Page Two
c. Describe receiving stream features and pertinent
downstream uses: A narrow, deep trench, which enters
an unnamed tributary to Taggart Creek, was designated
as the receiving stream. An on -site investigation
performed on October 10, 1990 indicated that both the
trench and the tributary appeared to have no natural
flow. The applicant has requested that the wastewater
be discharged to the tributary. Downstream users are
unknown.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. Type of Wastewater: 0% Domestic
100 Industrial
a. Volume of Wastewater: 0.0143 MGD (Design Capacity)
b. Types and quantities of industrial wastewater:
The proposed wasteflow consists primarily of stormwater
and seepage from the retention pond (for lime storage).
c. Prevalent toxic constituents in wastewater: N/A
d. Pretreatment Program (POTWs only): N/A
in development approved
should be required - not needed
Production Rates (industrial discharges only) in pounds per
day: 908,000 cubic feet/day - Acetylene Gas.
a. Highest month in past 12 months: lbs/day
b. Highest year in the past 5 years: lbs/day
Description of Industrial Process (for industries only) and
Applicable CFR Part and Subpart: Calcium carbide is mixed
with water in reactors to produce acetylene gas.
4. Type of Treatment (specify whether proposed or existing):
The proposed facility consists of a 1.50 acre lime slurry
holding pond and a water collection system consisting of two
small ponds with pumping capability.
Sludge Handling and Disposal Scheme: Lime accumulated in
the lime slurry holding lagoon will be removed as often as
necessary and marketed for agricultural usage.
6. Treatment Plant Classification (attach completed rating
sheet): Proposed facility, no rating determined.
7. SIC Code(s): 2813
Wastewater Code(s):

Page Three
Primary: 73
Secondary: Lime water
Main Treatment Unit Code: 00000
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grants
Funds (municipals only)? N/A
2. Special monitoring requests: N/A
3. Additional effluent limits requests: N/A
4. Air Quality and/or Groundwater concerns or hazardous waste
utilized at this facility that may impact water quality, air
quality or groundwater? The proposed wastewater consists
primarily of stormwater and lime slurry lagoon seepage. The
lime seepage is a caustic industrial waste. Unless it is
properly pretreated (by neutralization) prior to dischage,
it would have an adverse impact on aquatic life. Since the
holding lagoon is not lined, vertical movement of Ca(OH)2
may also affect groundwater. Therefore, it is suggested
that the Groundwater Section further investigate to
determine whether or not the groundwater has been impacted
or precautions need to be taken to assure against such
contamination.
5. Other: N/A
PART IV - EVALUATION AND RECOMMENDATIONS
It was pointed out in a previous staff report dated October
31, 1990 by G. T. Chen that the designated receiving stream had
no natural flow. The Division of Environmental Management does
not permit discharges into receiving waters having no positive
7Q10 or 30Q2 flow. In addition, the applicaat was investigating
the possibility of connecting the discharge to the Charlotte -
Mecklenburg Utilities Department (CMUD) sewer collection system.
Therefore, the Mooresville Regional. Office recommended that an
NPDES Permit not be issued until the applicant provided documen-
tation that CMUD has refused to accept the wastewater.
Since the proposed wastewater consisted primarily of storm -
water (plus lime slurry holding lagoon seepage) CMUD would not
accept the wasteflow to its sewer system. Therefore, the Moores-
ville Regional Office hereby revises its previous decision and
recommends that an NPDES Discharge Permit be issued as requested
by the applicant.
Should you have any questions regarding this matter, please
advise.

Page Four
Tsr9L -- 44
lgnature +f Report Preparer Date
Water r ua
onal Supery
Date

7 55' 43° 000 FEET
CHARLOTTE WEST QUADRANGLE
NORTH CAROLINA-MECKLENBURG CO.
7.5.MINUTE SERIES (TOPOGRAPHIC)
0 2'30"
-35°15'
1
N

1,1111r-
iw r+'Ng
EirAit�MF�N� INC.
April 2, 1992
Mr. G. T. Chin
North Carolina Department of Environment,
Health and Natural Resources
Water Quality Section
P.O. Box 919
Mooresville, North Carolina 28115
Re:
National Welders
NPDES Discharge Permit No. NC0079758
AEI Job No. N159-02
Dear Mr. Chin:
P►. G. DEM OF NATURAL
RESOURCES AND
COMMUNITY DEVELOPMENT
APR 0 6 1992
QSVISIA OF EO(VIR1RMENTAL MAMEG[M[MT
MOORESVILLE RESIZXAL OFFICE
The purpose of this letter is to provide additional information
concerning the referenced NPDES permit application for National
Welders Old Dowd Road facility which was reactivated per the
suggestion of Mr. Rex Gleason and Mr. Mike Parker of your office.
The additional information which you have requested includes:
1. An updated topographic map showing the discharge
location into the tributary of Taggart Creek;
2. Design capacity of the retention basin;
Estimated flows from the retention basin;
4. CharacterisLics of the wastewater discharge; and
5. Proposed sludge disposal plan.
The requested information is provided in the attachments to this
letter.
9305 MONROE ROAD ^ SUITE J • CHM' TTEa N,C., 26270-14 • TELEPHONE -'' -4$ 7 FAX [phone]i59

:f you have any questions concerning the information submitted,
or need any further information P pertainingto the National
Welders permit application, please do not hesitate to call..
Sincerely,
AWARE Environmental Inc.
David L . Wagoner
Senior Project Engineer
DLW/mre
Attachments
cc: File
Gerald Carver, National Weide
Delane urc , National Welder
Bob Stein, AEI
Carol Hambridge, AEI
11905
5

A
I©.n7 . :11- 'JCi'E_ 35 /3' 34"
i-0ng: rde 8C>
CHARLOTTE WEST QUADRANGLE
NORTH CAROLINA—MECKLENBURG CO.
5 MINUTE SERIES (TOPOGRAPHIC)

N. C. DE PT. OF NATURAL
R (ISM Rtr;C S AND
CoNf ktt= ITV DCI tl:t.OP.!' ENT
7 6 1992
ATTA
PROPOSED P"I TTENTI©N POND CAPACITY, ESTIMATED WASTEWATER
CHARACTERISTICS AND SLUDGE DISP©SAL OPTIONS
Design capacity of the retention pond: 23,500 gp
II. Estimated discharge from the retention pond: 14,300 gpd
III. Estimated water reuse - lime recovery system: 9,500 gpd
IV. "hara: ter istics of discharge
A. Stormwater runoff
1. Stormwater collection area includes lime storage
and acetylene production areas
2. Possible high pH
B. Seepage from lime storage area
1. Caused by rainfall directly on storage area
2. High pH
C. Effluent pH to be monitored and adjusted as necessary
to meet permit requirements.
V. Proposed sludge disposal plan
A. Sludge produced will be due to silt/'soil being washed
into the retention basin during storm events.
Dispal plcn
1. Test pH of collected silt and periodically remove..
2. Disposal options depend on pH of the collected
material.
a. If pH is less than 9.0 s.u. - on -site use
will be evaluated.
b. If pH is greater than 9.0 s.u. - off -site
disposal options (agricultural use, landfill.
cover, landfill disposal) and on -site
neutralization/use will be evaluated.

A
A : A r7 illmw
ENVIRONMENTAL INC,
October 3 1991
Mr. Rex Gleason
State of North Carolina Department of
Environmental Management
P.O. Box 950
Mooresville, North Carolina 28115
Re: National Welders
AEI Job No. N159-02
Dear Mr. Gleason:
199
We would like to thank you for meeting with us at the National
Welders facility. Based on our discussions and your concurrence
we are going to proceed with the initiation of the decant system
construction, contact Barbara Christian concerning the
groundwater issue, and follow up with Mr. G. T. Chin with regard
to reopening the NPDES permit application for the
stormwater/seepage discharge to the tributary of Taggart Creek.
We feel these actions will allow us to proceed with our project.
As we mentioned, we had been awaiting approval from your office
or MCDEP to proceed on these projects.
Again we thank you for your assistance and look forward to the
time that we can have all of these projects in place. If there
are any additional items we should be implementing or if you have
any other ideas with regard to this project, please feel free to
contact us.
Sincerely,
AWARE Environmental Inc.
Robert M. Stein, P.E.
President
RMS/mre
cc: Russell Rozzelle, MCDEP
Gerald Carver, National Welders
David Wagoner, AEI
wp/1©926
NE ,7s,1 ) 11,45 959 PAX yt ) k3 45 7 ,.:,4

SOC PRIORITY PROJECT: Yes No x
If Yes, SOC No.
To: Permits and Engineering Unit
Water Quality Section
Attention: Dana Bolden
Date: March 5, 1993
AUTHORIZATION TO CONSTRUCT
NPDES PERMIT
REPORT AND RECOMMENDATIONS
County: Mecklenburg
Permit No. AC0079758
PART I - GENERAL INFORMATION
1. Facility and Address: National Welders Supply Company
Post Office Box 31007
Charlotte, North Carolina 28231
2. Date of On -Site Investigation (if conducted): Last on -site
investigation was performed on October 10, 1990.
3. Report Prepared By: G. T. Chen
4. Persons Contacted and Telephone Number: N/A
5. Verified Discharge Point(s). List for all discharge points:
Latitude: 35° 13' 34" Longitude: 80° 55' 43"
Attach a U.S.G.S. map extract and indicate treatment facility
site and discharge point on map. Ensure discharge point(s)
correspond to NPDES permitted discharge points.
USGS Quad No.: G 15 NW USGS Quad Name: Charlotte West
6. Site size and expansion area consistent with application?
Yes No If No, explain: N/A
7. Topography (relationship to flood plain included): Rolling
with slopes of 3-10% toward receiving stream. The site is not
in a flood plain.
8. Location of nearest dwelling: One dwelling within 400 feet of
the lime slurry holding lagoon.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. Existing treatment facility

a. What is the current permitted capacity of the faci ty?
0.0143 MGD
b. Date(s) and construction activities allowed by previous
Authorizations to Construct issued in the previous two
(2) years: N/A
c. What is the actual treatment capacity of the current
facility (design volume)? 0.0143 MGD
d. Please provide a description of existing or substantially
constructed wastewater treatment facilities: The
existing facility consists of a 2.0 acre lime slurry
holding pond and a 8,800 gallon capacity seepage neutra-
lization pond with pumping capability.
2. Please provide a description of proposed wastewater treatment
facilities: The proposed treatment facilities will consist of
a 290,000 gallon capacity seepage treatment basin with flow
monitoring channel, a transfer pump (40 GPM with a 60' TDH),
a carbonator with diffusers and a carbon dioxide bulk storage
tank (6 ton capacity).
Residuals handling and utilization/disposal scheme:
a. If residuals are being land applied, please specify DEM
Permit No.:
Residual Contractor:
Telephone No.:
b. Residuals stabilization: PSRP:
PFRP:
Other:
c. Landfill:
d. Other disposal/utilization scheme (specify): Calcium
carbonate generated from neutralization process in the
seepage treatment basin will be removed and transferred
to the lime slurry lagoon for storage.
4. Treatment plant classification (attach completed rating
sheet): No rating is given
SIC Code(s): 2813
Wastewater Code(s) of actual wastewater, not particular
facilities, i.e., non -contact cooling water discharge from a
Authorization to Construct Staff Report
Version 10/92
Page 2

metal plating company would be 14, not 56.
Primary: 73 Secondary: Neutralized lime water
Main Treatment Unit Code: 52000
6. Important SOC, JOC or Compliance Schedule dates: (please
indicate) N/A
Date
Submission of Plans and Specifications
Begin Construction
Complete Construction
PART III - EVALUATION AND RECOMMENDATIONS
National Welders Supply Company, Inc. requests an
Authorization to Construct for the construction of a 290,000 gallon
capacity earthen basin for the treatment of wastewater. The waste-
water consists of seepage from a lime slurry storage pond plus
stormwater. Since the proposed treatment basin is an earthen one,
the Groundwater Section of the Mooresville Regional Office
recommends that the basin be lined with clay.
Pending review and approval by the SERG and the Groundwater
Section, if necessary, it is recommended that an Authorization to
Construct be issued to the applicant as requested.
Signature of Report Preparer
uality Reon Supervisor
Date
Authorization to Construct Staff Report
Version 10/92
Page 3

CHARLOTTE WEST QUADRANGLE
NORTH CAROLINA-MECKLENBURG CO,
7.5 MINUTE SERIES (TOPOGRAPHIC)

To: Permits and Engineering Unit
Water Quality Section
Date: October 31, 1990
NPDES STAFF REPORT AND RECOMMENDATIONS
County: Mecklenburg
NPDES Permit No.: NC0079758
MRO No.: 90-163
PART I GENERAL INFORMATION
1. Facility and Address: National Welders Supply Company, Inc..
Post Office Box 31007
Charlotte, North Carolina 28231
2. Date of Investigation: October 10, 1990
3. Report Prepared By: G. T. Chen
4. Person Contacted and Telephone Number: Mr. Forest Medlin,
[phone]
5. Directions to Site: National Welders Supply Company, Inc. is
located at 5313 Old Dowd Road, Charlotte, North Carolina.
6. Discharge Point(s), List for, all. discharge Points:
Latitude: 350 13' 34"
Longitude: 8O0 55' 40"
Attach a USGS Map Extract and indicate treatment plant site
and discharge point on map.
USGS Quad No.:. G 15 NW
Size (land available for expansion and upgrading): Litited
land area available for expansion/upgrading.
Topography (relationship to flood plain included): Rolling
with 3-10% slopes to receiving water. The two wastewater
collection ponds may be subject to surface runoff.
9. Location of Nearest Dwelling: One dwelling within 400 feet of
the lime slurry holding lagoon.
10. Receiving Stream or Affected. Surface Waters: UT to Taggart
Creek
a. Classification: C
b. River Basin and. Subbasin No.: Catawba & 03-08-34
c. Describe receiving stream features and pertinent
downstream uses: The receiving stream is a narrow, deep

Page. Two
trench which enters an unnamed tributary to Taggart
Creek. Both the trench and the tributary appeared to have
no natural flow during the site inspection performed an
October 10, 1990. Downstream users are unknown.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. Type of Wastewater: 0% Domestic
100% Industrial
a. 'Volume of Wastewater: 0.0014 MGD (Design Capacity)
b. Types and quantities of industrial wastewater: The
proposed wasteflow of 1,400 gpd is the seepage from a 1.5
acre lagoon which is used for holding lime slurry
generated from the manufacture of acetylene gas. Storm
run-off may also be included in the, discharge during rain.
events.
c. Prevalent toxic constituents in wastewater: N/A.
d. Pretreatment Program (POTWs only): N/A
2. Production Rates (industrial discharges only) in Pounds:
908,000 cubic feet/day - Acetylene Gas.
Description of Industrial Process (for industries only) and
Applicable CFR Part and Subpart: Calcium carbide mixes with
water in reactors to produce acetylene gas.
4. Type of Treatment (specify whether proposed or existing): The
existing wastewater treatment units consist of a 1.5 acre lime
slurry holding pond and impounded water collection system with
pump.
5. Sludge Handling and Disposal Scheme: Lime accumulated in the
lime slurry holding lagoon has never been removed, and, as a
result, the lagoon is almost completely filled with lime. It
was noted that a small portion of the lagoon is used for
mixing lime slurry which is pumped to tanker trucks
periodically for off -site use or disposal. Therefore, it is
requested that a comprehensive plan for the management of lime
and its slurry be developed by the Company and submitted to
the Division for review and approval.
6. Treatment Plant Classification: Less than 5 points; no rating
(include rating sheet). N/A
7. SIC Code(s): 2813
Wastewater Code(s):
Primary: 31
Secondary:

Page Three
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grants
Funds (municipals only)? N/A
2. Special monitoring requests: pH, Alkalinity and Hardness
3. Additional effluent limits requests: N/A
4. Air Quality and/or Groundwater concerns or hazardous waste
utilized at this facility that may impact water quality, air
quality or groundwater? The proposed wastetlow of 1,400 gpd
is a caustic industrial waste. Unless it is properly
pretreated (through neutralization) prior to discharge, it
would have an adverse impact on aquatic life. Since the
holding lagoon is not lined, vertical movement of Ca(OH) may
also affect groundwater. Therefore, it is suggested that the
Groundwater Section further investigate to determine whether
or not the groundwater has been impacted.
5. Other: N/A
PART IV - EVALUATION AND RECOMMENDATIONS
National Welders Supply Company, Inc. has applied for an NPDES
Permit for the existing discharge of industrial wastewater into a
wet weather ditch that enters an unnamed tributary to Taggart Creek
in the Catawba River Basin. the proposed wasteflow of 1,400 gpd'
results from seepage from a 1.5 acre lagoon that has been used for
holding lime slurry generated from the manufacture of acetylene gas
by a process in which calcium, carbide reacts with water in
reactors. Due to decades of operation at this facility, the
accumulated lime has almost occupied the entire lagoon. The
seepage, (and also storm run-off) is collected in two (2) small
ponds in series on the lower side of the lagoon and neutralized
with carbon dioxide gas before being discharged. A part of the
pretreated wasteflow is pumped back to the holding lagoon for
re -use. Since the lagoon is not lined, vertical movement of
calcium hydroxide, may impact groundwater. Therefore, it is
suggested that the Groundwater Section further investigate to
determine whether or not the groundwater has been impacted.
An on -site investigation performed by staff of this Office on
October IG, 1990 indicated that the wet weather ditch and the
unnamed tributary it enters appears to have no natural flow
(7Q10/30Q2 estimated to be 0 cfs). Given the fact the discharge is
existing, the Staff of the Mooresville Regional Office has concern
regarding potential instream impacts. Furthermore, current division
policy does not permit discharges into receiving waters having no
positive 7Q10 or 30Q2 flow. It is our understanding, however, that
the applicant has investigated the possibility of connecting the
LLY

Page Four
discharge to the Charlotte -Mecklenburg Utilities Department (CMUD)
sewer collection system. Approval of this connection is still
pending.
It is, therefore, recommended that an NPDES Permit not be.
issued until the applicant provides documentation that CMUD has
refused to accept the wastewater. Upon receipt of this information,
an NPDES Permit should be issued and a Special Order by Consent will
be negotiated with National Welders which will establish a schedule
to ultimately eliminate the discharge.
Signature
GTC/bb
Report Prepare r Date
y Regional S1ervisor Date

35 l,.3-4
CHARLOTTE WEST QUADRANGLE
NORTH CAROLINA--MECKLENBURG GO.
7.5 MINUTE SERIES (TOPOGRAPHIC)

VIKIxx t/
State of North Carolina �Io
partment of Environment, Health, and Natural Resou
Division of Environmental Management
512 North Salisbury Street • Raleigh, North Carolina 27611
arrme G. Martin, �cr
MUtam W. Cobey, jr., Secretary
Gerald S. Carter, VP
National Welders Supply Co., Inc.
PO Box 31007
Charlotte, NC 28231
Dear Mr, Carver :
e T. Everett, Ph.D.
Director
Subject: NPDES Permit Application
NPDES Permit No.NC0079758
National Welders Supply
Mecklenburg
County
This is to acknowledge receipt of the following documents on Septeer 12, 1990:
Application Form
Engineering Proposal (for proposed control facilities),
Request for permit renewal,
*Ni. Application Processing Fee of $200.00,
Other ,
The items checked below are needed before review can begin:
,Application Form
Engineering proposal (see, attachment)
.Application Processing Fee of
Delegation of Authority (see attached)
Biocide Sheet (see attached)
Other
If the application is not made complete within thirty (30) days, it will be
returned to you and may be resubmitted when complete.
This application has been assigned to
(919/733-5083) of our Permits Unit for review. You will be advised of any
comments recommendations, questions or other information necessary for the
review of the application.
Jule Shanklin
I am, by copy of this letter, requesting that our Regional Office
Supervisor prepare a staff report and recommendations regarding this
discharge. If you have any questions regarding this applications,
please contact the review person listed above.
Sincerely,
CC:
Dale Oercash, P.E.
P©ndan Pays
P.0, Box 2.7687. Raleigh, North Carolina 27611-7687 Telephone' l 733-7015

N. C. DEPT. OF NATURAL RESOURCES AND COMMUN TY DEV.
ENVIRONMENTAL MANAGEMENT COMMISSION
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
APPLICATION FOR PERMIT TO DISCHARGE WASTEWATER
STANDARD FORM C — MANUFACTURING AND COMMERCUAL
SECTION I. APPLICANT AND FACILITY DESCRIPTION
Unless otherwise specified on this form all Stems are to be completed, If an Item is not applicable Indicate 'NA,'
ADDITIONAL INSTRUCTIONS FOR SELECTED ITEMS APPEAR IN SEPARATE INSTRUCTION BOCrKLET AS INIPIVAVILO.
BOOKLET BEFORE FILLING OUT THESE ITEMS.
APPlicant
ns)
2. eAaitdnfp Address of APPlicent
(see Instructions)
Number & Street
City
State
Zip Code
Applicant's Authorized Agent
(see Instructions)
Name and Title
Number & Street Address
City
State
Zip Code
Telephone
4. Previous Application
If a previous application for a
National or Federal' discharge per,,
mit has been made, glve the date
of application. Use numeric
designation for date.
IOUb
Please Print or Type
National Welders Supply Company, Inc,
REFEP. TO
P.O. Box 31007
Charlotte
North Carolina
28231
Gerald S. Cary
Vice President Production
P.O. Box 31007
Charlotte
North Carolina
28231
704 333-5475
Area
Code
Number
90 05 17
YR MO DAY
r
6 certify that I am familiar with the Information contained In this application and that to the best of my knowledge and belief such }nforr radon
Is true, complete, and accurate.
,era.id S. Carver
Printed Name of Pars
Signature of Applicant or Authorized Agent
North Cerolitse General Statute 143-215,6(b) (2) 1rt vtdes that
any false statement representation, or certification in any a
or other document files or required to be maintained corder Ax
Environmental Management Commission implementing that Article
or knclwly renders inaccurate any recording or monitoring devic
operated cr maintained under Article 21 or regulations of the
i nlementing that Article, shall be guilty of a misdemeanor*in
$10,000, or by imprisonment not to exceed six months, or by bot.s.
a ptznishme t by a fine of not rsore than $10,000 or imprisonment n
for a similar offense.)
TItle
90 9 6
YR MO DAY
a fi
(18 U.S.C. S
t e than
tiO)7
;ly wakes
rt, plan,
,f the
rs with,
5e
nt Commission
e not to exceed
ction 1001 proviiit
year, br both,

Faculty/Activity (see Instructions)
Hive the name, ownership, and
physical location of the plant or
other operating facility where disc
chargels) dolts or will occur.
Name
Ownership (Public, Private or
Both Public and Private)
Check block 11 Federal Facility
and ghee GSA Inventory Control
Number
Location
Street i Number
City
County
State
Nature of putiness State the
nature of the business conducted
atthe plant or operating facility.
7. Factllty Intake Water (see Instruc-
tlonS) Indicate water Intake volume
per day by sources: Estimate
average volume per day in thousand
gallons per day.
Neunlelpal or private water lystem
Surface water
Groundwater
Total item 7
*If there is Intake water from
'other,' specify the source.
Facillty Water Use Estimate
average 'volume per day in thousand
gallons per day for the following
types of water usage at the 'facility,
(see Instructions)
Noncontact cooling water
Boller feed, water
Process water (including contact
cooling water)
Sanitary water
()trier*
Total Item !!
*if there ere-dIscharges to
"other,' Specify.
If there Is 'Sanitary" water use, give
the number of people served,
O PUB OPR V
Q FED
D ePP
5313 Old D and Road
harlotte
Mecklenburg
North Carolina.
Acetylene Production
AGENCY USE
17.0
thousand gallons per day
thousand gallons per day
thousand gallons per day
lions per day
housand pillions per day
d galfont per day
thousand gallons per day
12.7
thousand gallons per day
3.55 thduSand Winona per day
6.75
thousand paltons per day
17 thousand gallons per day
Tani Testing
40 people served
1-2

FDA AGENCY USE
All Facility Discharges and other
Losses; Number and Discharge (see
Instructions, Volume Specify the
number of discharge points and the
volume of water discharged or
lost from the facility according to
the categories below. Estimate
average volume per day In thousand
gallons. per day.
Surface Water
Sanitary wastewater transport
system
Storm water transport system
Combined sanitary and storm
water transport system
Surface Impoundment with no
effluent
Underground percolation
Waste acceptance firm
Evaporation
Consumptlan.
Other'
Facility discharges and volume
Tot& item 9.
If there are discharges to ;otner,
specify„
Number of
Dlscharge
Points
Total Volume Used
or Discharged,
Thousand Gal/Day
site Trans
10. Permits, Licenses and Applications
List all existing, pending or denied permits, licenses and appticatlo
Issuing Agency
For Agency Use
Type of Permit
or License
ID Number
0.75
10.0
17.0
e S1u
discharges from this facility tsee Instructions).
Date
Flied
Y R/MO/DA
Da t e
issued
YR/MO/DA
Date
Denied
YR/MO/DA
Expiration
Date
Y R/MO/DA
11. Maps and Drawings
Attach all required maps and drawl
12. Addition
Nu
back of this applicatlon,tsee Instructions)
intormatlon

STANDARD FORM C — MANUFACTURING AND COMMERCIA
SECTION II. BASIC DISCHARGE DESCRIPTION
Complete this section Tor each CiSChiii;ic indicated in Section I, Item 9, that is to surlace waters. This inciudes discharges to municipal sewerage
systems in which toc stew ate, ocio not go through a treatment works prior to being discharged io surface waters, Discharges to wells Must
be descr4)ed where u,ere are also disc,arges to surface waters fruit; this facility, SEPARATE DESCRIPTIONS OF EACH DISCHARGE ARE
REQUIRED EVEN IFSEVERAL DISCHARGES ORIGINATE IN THE SAME FACILITY, All values for an existing discharge should ue repre
sentative of the twelve previous monins of operation. It this Is a larODOSed discharge, .,slues should reflect best engineering estimates,
ADDITIONAL INSTRUCTIONS FOP SELECTED ITEMS APPEAR IN SEPARATE .NSTRUCT1CIN BOOKLET AS INDICATED. REFER
TO BOOKLET BEFORE F It LING Diu* THESE ITEMS.
1. Discharge Serial No, and Name
a. Discharge Serial No,
(see instruc(ions)
0. Discharge Name
Give name of discharge. ao,
(see instruct.00s)
c. Previous Discharge Serial No
previous per mlit applicatio,
',Jai made for (MS discharge
iLem 4, Section I), prokicle pe
taus discharge serial numoei,
2. Discharge Operating Dates
a. Discharge Began Date t, 7rie
discharge described betow is in
operation, gise the date
best estoylatc IOC OiSChir
b. Discharge to Begin Date ii
discharge naii never occs.:,ied
ss planned lc, some Cle!E,
give 5110 Ball (within bes' esti-
mate) the cTscriarge wili eegiri
c. (Discharge tc End Date i" disi
charge is sc ri 1,0 0S,
iinued within the ilext
give ine dale
male] the discnaige
3. Engineering Report Availatie
Check it an engineering reps,: is
available to revie^ing
request. (see I n5 ,,C110n5)
4, Discharge Location Name
bountlaiies within
the puled 01 disc riar9e is ipca.,ed
Slate
Count)
(If sPriliLable) Cit) or row,
5, Discharge Point Description
Discharge is intu leneck oncll
ISee tostructions
Stream Iinctudes ditches, airokos
and Other intermillenl waln/CourSeil
Lake
Ocean
Munkwal Santlaiy liNastew ate,
Transport Skste°‘
Municipal Combined Sanitary and
Storm Transport System
001
TaggairL_Lreek Qutf all
NA
YR MO
90 11
YR MC)
YR Mfl
NC_
Mecklenburg_
Charlotte
TR
o LKE
DOCE
DMTS
OMES
2
Agency Use
This section contains 9 pages,

DISCHARGE SERIAL NUMBER
Municipal Storm Water Transport
System © STS
WePI (lniectlonl 0WCL
Other DOTH
If 'other' is checked, specify
Discharge Point — Lat/Long Give
the precise location of the point
of discharge to the nearest second.
Let! tude
Longitude
Discharge Receiving Water Name
Name the waterway at the point
01 dIscharge.('$ee instructions)
If the discharge is through an outs
fall that extends beyond the shore,
line or Is below the mean tow
water Ilne, complete stern 8.
Offshore Discharge
a. Discharge Distance from Shore tSta _ feet
35 DEG ,..._3
55 MIN
30sEc
©©SEC
Unnamed Tributary to Taggart Creek
F t7r Aoencv Use For Agency Use
b. Discharge Dapth Below Water
SurfaCe
Discharge Type and Occurrence
a, Type of Discharge Check
whether the discharge
tlnuous or intermittent.
(see Instructions)
b. Discharge Occurrence Days per
Week Enter the average num
ber of day'[ per week (during
periods tsf discharge) this dis-
charge occurs.
c, Discharge Occurrence —Months F�++rr I, r1
If this discharge normalcy 20�C [<y7AN FEl9 In ysyAPR
operates (eilner inlermittentty,
or continuo0sly) on less than ,IMAM JJUN isl JUL ( AUG
e year -around basis (excluding
Shutdowns far routine morose- SEP OCT D'))NOV ®DEC.
Hance), check the. months due.
Mg the year when Inc discharge
Is operating. (see instructions)
feet
Continuous
(tnt) lnternnrllent
..days per week
:amplete items 10 and 11 if ^inter
nittent" is checked in Item 9,a.
)tnerwise, proceed to Item 12,
0. Intermittent Discharge quantity
State the average volume per dis-
charge occurrence in thousands of
gallons.
11, Intermittent Discharge Duration
and Frequency
a. Intermittent Discharge Duration
Per Day State the average
number of Hours per day the
discharge is operating.
(nlermifttnt Discharge
Frequency State the average
number of discharge occur•
rences per day during days
when discharging.
12. Maximum Flow Period Give the
time period in which the maximum
flow of this discharge occurs.
303e
thousand gallons per discharge occurrence.
urs per day
_discharge occurrences per day
From Jan,,, Feb
month month
I 1 _')

DISCHARGE SERIAL NUMBER
13. Activity Description Give a
narrative description. of activity
producing this chscharge.fsee
InstructionS)
14. Activity Causing Discharge For
each SIC Code which describes
the activity causing 'this discharge.
supply the type anc maximum
amount of either the raw material
consumed (Item 13a) or the product
produced (Item 14.c) in the units
specified in Table of the InstruCi
bon Booklet. 1/- or 5/C Codes not
listed in Table I, use raw material
or production units normally used
for measuringproctonee
instructions).
a. Raw Materials
SIC Code
2144
213a
Na me
(2)
Acetylene Gas Production. - Calcium carbide is
mixed with water inside reactor vesselsproducing
ene Gas and Carbide
a by-product and is being sold or stored in a
holding p ond, Water from the pond is theprgEosed
discharge to be permitted.
Maximum Unit
Amount/Day (See Table It
Shared Discharges
(Serial Prlumber(
(3}
(.4)
(5)
cs, Products
Maximum
Amount/Day
Unit Shared DiScharges
e TbI I) (Serial Number)
II-3

15. Waste Abatement
a, Waste Abatement Practices
Describe the uuabe abatement
pfacbces USt0 on this discharge
with a brief narrative. (see
instructions)
b. Waste Abatement Codes
Using the nodes hsled in Tati)e
It of the instruntion Bodetet,
destribe the waste abatement
processes for this discharge in
the order )r) Which they occur
if based:de,
215a
PSEDIM (2)
CNEUTR
1999)1ARrif SF biAl. Nittetin 11
lupounded dater collection
water will then be clarified via
followed by neutralization prior
reuse. Lim.e collected will be u
r..._
FOR AGENCY USE
system Collected
edimerltation,
to discharge or
sed off -site.
ass_ __pm_ sts
SLANDD
(3)
(et () (63
(t) (E) (9)
(101, (11) , (12)
et3t (14) (15)
(16) , (17) (lb)
(19) (20) (21)
122) (23) , (24t
(25)

DISCHARGE SERIAL NUMBER
Wastewater Characteristics
Check the box beside each constituent which Is
or best estimate,(see Instructions)
nt +n
Color
0
Parameter
216
opper
01042
Ammonia
00610
Iron
01045
Organic nitrogen
00605
Nitrate
00620
Nitrite
00615
d
u
27
Mange nese
01055
Phosphorus
00665
Sulfate.
00945
719
olybdenum
062
ulfidr
74
Nickel
01067
Sulfite
00740
Brom
7187
Selenium
01147
Silver
01077
Chloride
00940
an de
0072
ot$situ
Sodium
00929
00951
Thallium
01059
Aluminum
01105
Titanium
01152
Antimonq Tin
01097 01l
02
Arsenic
1002
yr,tu
010I2
Zinc
01092
Al,gicides
74051
Barium Chlorinated organic compounds'
010t17 ` 74052
Boron
01022
Pesticides'
74053
Cadmium
01027
Oil and grease
00550
Calcium
0(1916
Phenols
32730
Cobalt
01037
Chromium
01034
Fecal ccaliform bacteria
74055
X
Surfactants
35260
Chlorine
50060
Radioactivitya
74050
'Specify substances, compounds and/or elements in Item 26.
Pesticides (insecticides, funggicides, and rodenticides) must be re_
names specified in Acceptable Common Nantes and Chemical Name,
Pesticide Labels. end Edition, Environmental Protection Agency, Washington
required by Subsection 162.7(b) of the Regulations for the Enforcement of t
Fungicide, and Rodenticide Act.
f the acceptable common
lent Statement on
.C. 20250, lune 1972,as
Federal Insecticide,
11-5

DISCHARGE SERIAL HUMBER
17. Description of Inteee and Discharge
For each of the parameters listed below, enter In the appropriate box the welt)* or code letter answer called for,(see InstructionSi
tn addition, enter the parameter name and code and all required valustS fOr any of Me following parameters If they were checked In Item 16;
ammonia, cyanide, aluminum, arsenic, beryllium, cadmium, chromium, copper, led, mercury, nickel, selenium, zinc, tthenors, oil end Greatc„
and Chlorine (netkluit1).
Influent Effluent
nil Code
Temperature (
F
74027
Etiocherniail Oxygen Dernend
(BOD 5-day)
mel
00310
Sptcific Conductance
micrornhoWcm at 25° C
*Other discharges sharing intake flow (serial number
11-6

DISCHARGE SERIAL NUMBER
17. (Cont'd.)
le, Plant Controls Check If the fol-
lowing plant controls are available
for this discharge.
Alternate power source for major
Pumping facility.
Alarm or emergency procedure for
power or equipment fa➢lure
Complete item 19 If discharge Is
from cooling and/or steam water
generation and water treatment
additives are used.
19. Water Treatment Additives If the
discharge Is treated with any con-
ditioner, inhibitor, or algicide,
answer the following;
a. Name of Materiar(s)
b. Name and address of manu-
facturer
c. Quantity (pounds added per
nsitllon gallons of water treated}.
Q ALM
117

ch Chemical composition of these
additives (see instructions).
Complete items 20-25 If there Is a thermal discharge
associated with a steam and/o( power generation
Silent, steel mill, petroleum refinery, or any other
manufacturing process) and the total discharge flow is
10 million gallons per day or more. (see Instructions)
20. Thermal Discharge Source Chock
the appropriate Itern(s) Indicating
the source of the discharge. (see
Instructions)
Blowdown
Boller Chemical Cleaning
Ash Pond Overflow
Boller Water Treatment — Evapora-
tor Blowdown
011 or Coal Fired Plants — Effluent
from Alr Pollution Control Devices
Condense Cooling Water
Goofing Tower Blowdown
Manufacturing Process
Other
21. Oischarge/Ritoeiving Water Tefflpir•
Mum Difference
Give the maximum temperature
difference between the discharge
and receiving waters for summer
and winter operating conditions,
(see instructions)
Summer
Winter
22. Discharge Temperature, Rate of
Change PIT Hour
Give the maximum possible rate of
temperature change per hour of
discharge uncle' operating con-
ditions, (see Instructions)
23. Water Temperature, Percentile
Report (Frequency of Occurrence)
In the table below, enter the
temperature which Is exceeded 10%
of the year, 5% of the year, 1% of
Use year and not at all (maximum
yearly temperature). (see Instructions
Frequency of occurrence
a. Intake Water Temperature
(Subject to natural changes)
b. Discharge Water Temperature
24. Wolter intake Velocity
(see instructions)
25. Retention Time Give the length of
time, in minutes, from start of
water temperature rise to discharge
of Cooling water. (see Instructions)
DISCHARGE SERIAL NUMBER
D BLBD
D sca_
APOF
o
EPSD
DOCFP
o
COND
D CTBD
OMFPR
0 OTHR
°F.
oF
°F./hour
10%
5%
°F
°F
feet/sac.
minutes
°F
II-8
OF.
Maximum
°F
°F °F

DISCHARGE SERIAL. NUMBER
FOR AGENCY USE
2d. Additionat information
226 stem
frrforrnat on
11-9

STANDARD FORM C - MANUFACTURING AND COMMERCIAL
SECTION 111 WASTE ABATEMENT REQUIREMENTS & IMPLEMENTATION (CONSTRUCTION) SCHEDULE
This section requires Information on any uncompleted ImpternentetiOn schedule which may have been imposed for construction of waste abate-
ment facilities. Such requirement and Implementation schedules may have been established by loc-al, State, or Federal agencies or by court
action. In addition to completing the following Items, a copy of an official Implementation schedule should be attached to this application,
iE YOU ARE SUBJECT TO SEVERAL DIFFERENT IMPLEMENTATION SCHEDULES, EITHER BECAUSE OF DIFFERENT LEVELS OF
AUTHORITY IMPOSING DIFFERENT SCHEDULES (Item la.) ANO/CR STAGED CONSTRUCTION OF SEPARATE OPERATION UNITS
(Item lc), SUBMIT A SEPARATE SECTION III FOR EACH ONE.
t. Improvements
a. Dfscharge Serial Number
Affected List the discharge
serial numbers, assigned In
Section 11, that are covered by
this Implementation schedule.
b. Authority Imposing ROCWIFO.
mints Check the appropriate
Item Indicating the authority for
implementation schedule. If
the Identical Implementation
Schedule has been ordered by
more thanone authorttV, Check
the appropriate Items. (see
Instructions)
LoctIy developed plan
Areawkie Plan
Basic Plan
State approved Implementa-
tion schedule
Federal approved water
quality standards Implementa-
tion plan.
Federal enforcement proced-
ure or action
State Court order
Federal court order
c. Facility Requirement. Specify
the 3-character code of those
listed below that best describes
In general terms the require-
ment of the implementation
schedule and the applicable
charaeter abatement code(s)
from Table II of the Instruction
booklet. If more than one
schedule appliee to the facility
because of a staged construction
schedule, state the stage of con-
struction being described here
with the appropriate general
attlon code. Submit a separate
Section III for each stage of
construction pianned.
001
OLOC
DARE
OEMS
DSOS
OWQS
DENF
DCRT
o
FED
3-character
(general)
NEW
5-character
(sPecific)
see Table II)
RUSEUR
PSEDIM
CNEUTR
New Facility
Modification (no Increase In capacity or treatment)
increase In Capacity
increase In Treatment Level
Both increase in Treatment Level and Capacity
Process Change)
EllmlnatIon of Discharge
FOR AGENCY USE
NEW
MOD
INC
INT
ICT
PRO
ELI
This section contains 2 pages.

oed by #cheduwe arip arty actue
urateiy As #4s. { lnxt
tip enteticrrr taps
timlrary Dian complete
Fitt ai plan raabm6ssion
Final plan tort piet#
Flrtare.En c ip ata 8c Ont'�
It aui
f', •ir4 action Qa g , Cdn3trup
9.. End Iorr a.g :; onttru ti
h. Dtsch# n
1. perattonai iav 1 att#in
2. 5 h uia (Yr o a
10 5

N. C. DEPARTMENT OF NATURAL RESOURCES & COMMUNITY DEVELOPMENT
ENVIRONMENTAL MANAGEMENT commissInN
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
APPLICATION FOR PERMIT TO DISCHARGE
ADDITIONAL REQUIRED INFORMATION
APPLICATION NUMBER
DISCHARGE SERIAL NUMBER
REFER TO DIRECTIONS ON REVERSE SIDE BEFORE ATTEMPTING TO COMPLETE THIS FORM
REMARKS:
I certify that 1 am familiar with the information contained In this report and that to the
best of my knowledge and belief such information Is true, complete and accurate.
ate Form C mpleted
Gerald S. Carver
Name of Authorized A n ,
Signature

Directions. —For each parameter listed, complete the
information requested in each column in the units specified.
according to the instructions given below.
Column 1.—Enter the daily average value of the intake
water at the point it enters the facility. If intake water is
from more than one source, and enters the facility at
separate entry points, the value given in column I should be
weighted proportional to the quantity of flow contributed
from each source, If water is treated before use, completion
of this column is not required (see instructions for column
2). Values of intake are not required for mining activities.
Column 2.—if all or part of intake water is treated before
use, provide values for total intake here instead of in
Column 1. Also describe briefly in item 26 "additional
information," the type of treatment performed on intake
water (e.g., rapid sand filtration, coagulation, flocculation,
ion exchange, etc.) and the percent or intake water
contributing to this discharge that has been treated.
Column 3.—Supply daily average value for the days when
discharge is actually operating or is expected to be operat-
ing (a new discharge). Daily average values are to be com-
puted by weighting the daily value in proportion to the daily
flow. If a discharge occurs irregularly, the value supplied
in the column marked "Daily Average" should represent
an average for the average for the days the discharge actually
occurs. Average values are not to be supplied for pH,
specific conductance, and bacteriological parameters (e.g.,
coliform bacteria).
Columns 4 and 5. —Supply minimum and maximum value
observed (or expected for new discharge) over any one day
when the discharge is operating.
Column 6. —Specify the average frequency of analysis for
each parameter as number analyses per number of days (e.g.,
"3/7" is equivalent to three analyses performed every 7
days). If continuous, enter "CONT." When analyses are
conducted on more than one individual grab sample col-
lected during the same day, the analysis frequency should
reflect one analysis whose value is the average of the
individual grab sample measurements. Average frequency
should be based on an operating month.
Column 7.—Specify the number of analyses performed at
the average frequency specified in column 6, up to 365.
Column 8.—Specify sample type as follows:
G For grab sample (individual sample collected in Tess
than 15 minutes).
#C For composite sample "#" is to be replaced h
average number of hours over which the
sample was collected. Composite samples .u:
binations of individual samples obtained at hilt' ,
over a time period. Either the volume of each nF
dividual sample is directly proportional to disct,..r, r
flow rates or the sampling interval (for consrar,!-
volume samples) is inversely proportional tt,
flow rates over the time period used to produt:
composite.
NA if "CONT" was entered in column 6.
Analytical methods. —Appendix A contains all pai to}t r °ts
with their reporting levels, test descriptions, and refercn :
The parameter values can be determined either by use rit
of the standard analytical methods as described in table A 00
by methods previously approved by the EPA Rrti n; l
Administrator or Director of a federally apprr,c,i
program (or their authorized representatr
jurisdiction over the State in which the disctrnrg c..o rl
the test used is not one shown in table A, the rest nrot.,
should be referenced in "Remarks" or on a sepalatr
values are determined to be less than the detectable
determined by referenced standard analytical te4h ai..
and/or instrument manufacturer's literature), spry
(value of detectable limit)" in the appropriate soiree.
example, if the detectable limit is .005 mgjl and quairrtrrr rc
of Tess than this are determined, specify "LT .005." Do nu
enter descriptors such as "NiL," "TRACE," "NEG," ct;:.,.
for this purpose. If it is your reasoned judgement that one 0,
more of the required parameters' is not present in the initr�,l
untreated or treated process water and/or the dischar,n
enter an "A" (meaning "absent") in the appropriate space.
In order for values reported to be representative, it is
recommended that they be based on from at least file ta,
seven analyses of composite samples (if applicable). Each of
the composite samples should be obtained by compositing
frequent samples in proportion to flow over an operating
day. Samples should be taken during period of maximum
production, if possible. If samples are taken at periods of
less than maximum production, state in "Remarks" the
percent of maximum production that was obtained during
the sampling period.
GPO 865.710

4834 !V 5W
5 7 3 4 505 tn.+TN ISLAND LAKE! '45
55'
SCALE: 1: 24000
0
1000
1000
2000
3000
4000
5000
6000 7000 ft.
-figure 1
SITE LOCATION MAP
AEI JOB No, N I59 -O
A ArA Pt Alm'
ENVIRONMENTAL INC

CIFY
WAT
AC
2,700 gpd
700 gpd
12,000 gpd
YI_EN E-
1,400 gpd
DECA
E
1400 gpd
10,000 gpd
0
US
TE
ENVIRONMENTAL INC
�1111atm
N
A ZONAL
YOGE H I CCS
1400 gpd
POND
^�R
A
UI
N
400 gpd
700 gpd
SEPTIC
TANK
DISCHARGE 001
CI r..y
WA -
4500 c d
RE
CI.
S`\
A
I I �R _S
0 C
550 gpd
v
C1L_II`;IDER
PRESSURE
TEST I\, G
750 gpd
S_ORM
DRAIN,
SCHEMATIC OF WATER F_OW
NATIONAL WELDERS, Inc.
CHARLOTTE, NORTH CAROLI\A
AUGUST 14, 1990
AEI JOB No. N159--01

pirState of North Carolina
Department of Environment,
Health and Natural Resources
Division of Environmental Management
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
October 29, 1993
DeLane Burch, Production Engineer
National Welders Supply Company
Post Office Box 31007
Charlotte, North Carolina 28231
„ JFP'E OF
OVRTV N/ NA i OVA AAL:A ug ci3s,
NOV 0 5 1993
. (NIZA1
Ohik:t
Subject: Permit No. NC0079758
Authorization to Construct
National Welders Supply Company
Groundwater Treatment Facility
Mecklenburg County
Dear Mr. Burch:
A letter of request for an Authorization to Construct was received January 27, 1993 by the Division
and final plans and specifications for the subject project have been reviewed and found to be satisfactory.
Authorization is hereby granted for the construction of a high pH groundwater treatment system consisting
of a 290,000 gallon seepage treatment basin with a CO2 diffusers, a 40 gpm transfer pump, a flow
monitoring channel with discharge of treated wastewater into Taggart Creek. A portion of the collected
seepage may also be utilized for lime removal operations.
This Authorization to Construct is issued in accordance with Pan III, Paragraph A of NPDES
Permit No. NC0079758 issued September 14, 1992, and shall be subject to revocation unless the
wastewater treatment facilities are constructed in accordance with the conditions and limitations specified in
Permit No. NC0079758.
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 Permittee 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.
The Mooresville Regional Office, telephone number [phone], shall be notified at least 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 nonnal office hours from 8:00
a.rn. 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 29535, Raleigh, NC
27626-0535.
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Acton Employer 50% recycled/ 10% post -consumer paper

IrPermit No. NC0079758
Authorization to Construct
National Welders Supply Company
October 29,1993
Page 2
Upon classification of the facility by the Certification Commission, the Permittee shall employ a
certified wastewater treatment plant operator to be in responsible charge (ORC) of the wastewater treatment
facilities. The operator must hold a certificate of the type and grade at least equivalent to or greater than the
classification assigned to the wastewater treatment facilities by the Certification Commission. The
Permittee must also employ a certified back-up operator of the appropriate type and grade to comply with
the conditions of Title 15A, Chapter 8A, .0202. The ORC of the facility must visit each Class 1 facility at
least weekly and each Class II, III, and IV facility at least daily, excluding weekends and holidays, and
must properly manage and document daily operation and maintenance of the facility and must comply with.
all other conditions of Title 15A, Chapter 8A, .0202. Once the facility is classified, the Permittee must
submit a letter to the Certification Commission which designates the operator in responsible charge within
thirty days after the wastewater treatment facilities are 50%© complete.
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 143-215.6A to 143-215.6C.
The issuance of this Authorization to Construct does not preclude the Permittee from complying
with any and all statutes, rules, regulations, or ordinances which may be imposed by other government
agencies (local, state, and federal) which have jurisdiction.
One (1) set of approved plans and specifications is being forwarded to you. If you have any
questions or need additional information, please contact Mr. Dana J. Bolden, telephone number 919/733-
5083.
Mecklenburg County Health Department
Mooresville Regional Office, Water Quality
Training and Certification Unit
Mooresville Regional Office, Groundwater
Jack Floyd, Groundwater Section, Permits Unit
David Wagoner, Aware Environmental, Incorporated

Permit N. Nak179758
Authorization to ns ct
National Welders Supply Company
October 29,1993
Page
Engine
I
Cert
Carolina, haying been au
project,
Project
s a duly registered Professional Engineer in the State of North
o observe (periodically, weekly, full time) the construction of the
Location
for the
Permittee hereby state that, to e best of abilities, due care and dili enee 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.
Signature Regi tract n No.
Date

CHARLOTTE WEST QUADRANGLE
NORTH CAROLINA-MECKLENBURG CO.
7.5 MINUTE SERIES (TOPOGRAPHIC)
0 U.S. 29
55' h 1 430 • FEET [ r r r. TO N.C. 16
/Y ✓Y

•
11, C. DEPT% OF NATURAL
RESOURCES AND
COMMUNITY DEVELOPMYN,"r
SEP 1 7 ?992
1111/1SM J rkfinMEVAA. MAY,P4[141
State of North Carolina. 14CORESVILLE REStilida 0/F10E
Department of Environment, Health and Natural Resources
Division of Environmental Management
512 North Salisbury Street • Raleigh, North Carolina 27611
James G. Martin, Governor A. Preston Howard, Jr., P. E.
William W. Cobey, Jr., Secretary Acting Director
September 14, 1992
Gerald S. Carter
P 0 Box 31007
Charlotte, NC 28231
Subject: Permit No. NC0079758
National Welders Supply Co., Inc.
Mecklenburg County
Dear Mr. Carter:
In accordance with your application for discharge permit received on September 12, 1990,
we are forwarding herewith the subject state - NPDES permit. This permit is issued pursuant to
the requirements of North Carolina General Statute 143-215 .1 and the Memorandum of
Agreement between North Carolina and the US Environmental Protection agency dated December
6, 1983.
If any parts, measurement frequencies or sampling requirements contained in this permit are
unacceptable to you, you have the right to an acijudicatory 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, Post Office Drawer 27447, Raleigh, North Carolina 27611
-7447. Unless such demand is made, this decision shall be final and binding.
Please take notice this permit is not transferable. Part IL E.4. addresses the requirements to
be followed in case of change in ownership or control of this discharge.
This permit does not affect the legal requirements to obtain other permits which may be
required by the Division of Environmental Management or permits required by the Division of
Land Resources, Coastal Area Management Act or any other Federal or Local governmental permit
that may be required.
If you have any questions concerning this permit, please contact Mr. Jule Shanklin at
telephone number 919/733-5083.
Sincerely,
Original Signed By
Coleen H, Sullins
A, Preston Howard, Jr.
cc: ' ..,,inryatrick, EPA
Pollution Prevention Pays
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone]
An Equal Opportunity Affirmative Action Employer

Permit No. NC0079758
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT, HEALTH, AND NATURAL RESOURCES
DIVISION OF ENVIRONMENTAL MANAGEMENT
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANTIASCHARGE 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,
National Welders Supply Company, Inc.
is hereby authorized to discharge wastewater from a facility located at
5313 Old Dowd Road
Charlotte
Mecklenburg County
to receiving waters designated as Taggart Creek in the Catawba River Basin
in accordance with effluent limitations, monitoring requirements, and other conditions set fort.
Parts I, II, and 111 hereof.
This permit shall become effective October 1, 1992
This permit and the authorization to discharge shall expire at midnight on August 31, 1996
Signed this day September 14, 1992
Original Signed By
Coleen H. Sullins
A. Preston Howard, Tr., Acting Director
Division of Environmental Management
By Authority of the Environmental Management Commission

No,
2.
by al
Con 'u
Road , Charlet
SUPP
National Weld Supply
ring tin
nburg
TOP]
Pat
s
ay, Inc,
holdingpo«�»: p at5 Old
this Permit), and
e Division of Enviro•yen gement,
nditions of
Discharge from said treatment works at the 1.. tin sped ed on the attach .p into Taggart
Creek which is classified Class C eaters in the Catawba River

7.5 MINUTE SERIES (T©PCh RAPHIG)

A. O. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL
Permit N . NC0079758
During the period beginning on the effective date of the permit and lasting until expiration, the ern ittee is authorized to discharge from
outfall(s) serial number 001. Such discharges shall be limited and monitored by the permittee as specified below:
Et ll ent Characteristics
Flow
Total Suspended Solids
Turbidity
Alkalinity*`*
Hardness'
Lba/day,.
Mort, An, NIP( Mel Mon. Ava. 17 I1y Max. Frequency
0.0143 M3D Weekly
30.0 mg/I 45.0 mg/I 2/Month
Weekly
Monthly
Monthly
Discharge Limitations Mtltctrin
Units (specify); Measurement
emertts
SampI
Type
Instantaneous E
Grab E
Grab U,©
Grab E
Grab E
* Sample locations: E - Effluent, U - Upstream, D - Downstream
** The discharge shall not cause the turbidity of the receiving water to exceed 50 NTU. If the turbidity exceeds these levels due to natural.
background conditions, the discharge level cannot cause any increase in the turbidity in the receiving water.
*** Expressed in mg/1 of CaCO3
All samples collected should be of a representative discharge.
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 rather than trace amounts.

Secti . , ale of Compr
shall comp itl Final Effluent Lim Limitations
the folio ": sch ule
shall comply with Final Effluent Limitations by the
unless specified below.
2. Pe in shall at
existmg . f.. " `ties at op
fordischarges in
cdve date of
ssa:
3. No later th l ys followingto i n
compliance ttee shall submit either a f pry
actions being 'ter' byidentified dates, n n
fc
In the latter case, the nonceincludethe can noncompli
and the p bablit of m la hest schedulem
t0 0
eve schedule of
thc
e or
age re
PH
n
e

Part II
Page l of 14
PART II
STANDARD CONDITIONS FOR NPDES PERMITS
SECTION A. DEFINITIQNS
1. Permit Issuing Authority
The Director of the Division of Environmental Management.
2. L EM or Division
Means the Division of Environmental Management, Department of Environment, Health
and Natural Resources.
3.
Used herein means the North Tina En en Management Commission.
4. Act or "the Act"
The Federal Water Pollution Control Act, also known as the Clean Water Act, as amended,
33 USC 1251, et. seq.
5. Nlass/Dav Measurements
a. The "monthly average discharge" is defined as the total mass of all daily discharges
sampled and/or measured during a calendar month on which daily discharges are
sampled and measured, divided by the number of daily discharges sampled and/or
measured during such month. It is therefore, an arithmetic mean found by adding the
weights of the pollutant found each day of the month and then dividing this sum by the
number of days the tests were reported. The limitation is identified as "Monthly
Average" in Part I of the permit.
b. The "weekly average discharge" is defined as the total mass of all daily discharges
sampled and/or measured during the calendar week (Sunday - Saturday) on which daily.
discharges are sampled and measured, divided by the number of daily discharges
sampled and/or measured during such week. It is, therefore, an arithmetic mean found
by adding the weights of pollutants found each day of the week and then dividing this
sum by the number of days the tests were reported. This limitation is identified as
"Weekly Average" in Part I of the permit.
c. The "maximum daily discharge" is the total mass (weight) of a pollutant discharged
during a calendar day. If only one sample is taken during any calendar day the weight
of pollutant calculated from it is the "maximum daily discharge," This limitation is
identified as "Daily Maximum," in Part I of the permit.

Part II
Page2of 14
d. The "average annual discharge" is defined as the total mass of all daily discharges
sampled and/or measured during the calendar year on which daily discharges are
sampled and measured, divided by the number of daily discharges sampled and/or
measured during such year. It is, therefore, an arithmetic mean found by adding the
weights of pollutants found each day of the year and then dividing this sum by the
number of days the tests were reported. This limitation is defined as "Annual Average
in Part I of the permit.
6. Concentration Measurement
a. The "average monthly concentration," other than for fecal coliform bacteria, is the sum
of the concentrations of all daily discharges sampled and/or measured during a calendar
month on which daily discharges are sampled and measured, divided by the number of
daily discharges sampled and/or measured. during such month (arithmetic mean of the
daily concentration values). The daily concentration value is equal to the concentration
of a composite sample or in the case of grab samples is the arithmetic mean (weighted
by flow value) of all the samples collected during that calendar day. The average
monthly count for fecal coliform bacteria is the geometric mean of the counts for
samples collected during a calendar month. This limitation is identified as "Monthly
Average" under "Other Units" in Part I of the permit.
b. The "average weekly concentration," other than for fecal coliform bacteria, is the sum
of the concentrations of all daily discharges sampled and/or measured during a calendar
week (Sunday/Saturday) on which daily discharges are sampled and measured divided
by the number of daily discharges sampled and/or measured during such week.
(arithmetic mean of the daily concentration values). The daily concentration value is
equal to the concentration of a composite sample or in the case of grab samples is the
arithmetic mean (weighted by flow value) of all the samples collected during that
calendar day. The average weekly count for fecal coliform bacteria is the geometric
mean of the counts for samples collected during a calendar week. This limitation is
identified as "Weekly Average" under "Other Units" in Part I of the permit.
c. The "maximum daily concentration" is the concentration of a pollutant discharge during
a calendar day. If only one sample is taken during any calendar day the concentration
of pollutant calculated from it is the "Maximum Daily Concentration". It is identified
as "Daily Maximum" under "Other Units" in Part I of the permit.
d. The "average annual concentration," other than for fecal coliform bacteria, is the sum of
the concentrations of all daily discharges sampled and/or measured during a calendar
year on which daily discharges are sampled and measured divided by the number of
daily discharges sampled and/or measured during such year (arithmetic mean of the
daily concentration values). The daily concentration value is equal to the concentration
of a composite sample or in the case of grab samples is the arithmetic mean (weighted
by flow value) of all the samples collected during that calendar day . The average
yearly count for fecal coliform bacteria is the geometric mean of the counts for samples
collected during a calendar year.
e. The "daily average concentration" (for dissolved oxygen) is the minimum allowable
amount of dissolved oxygen required to be available in the effluent prior to discharge
averaged over a calendar day. If only one dissolved oxygen sample is taken over a
calendar day, the sample is considered to be the "daily average concentration" for the
discharge. It is identified as "daily average" in the text of Part I.

Part II
Page 3 of 14
The "quarterly average concentration" is the average of all samples taken over a
calendar quarter. It is identified as "Quarterly Average Limitation" in the text of Part I
of the permit.
g. A calendar quarter is defined as one of the following distinct periods: January through
March, April through June, July through September, and October through December.
'. Other Measurements
a. Flow, (MGD): The flow limit expressed in this permit is the 24 hours average flow,
averaged monthly. It is determined as the arithmetic mean of the total daily flows
recorded during the calendar month.
b. An "instantaneous flow measurement" is a measure of flow taken at the time of
sampling, when both the sample and flow will be representative of the total discharge.
c. A "continuous flow measurement" is a measure of discharge flow from the facility
which occurs continually without interruption throughout the operating hours of the
facility. Flow shall be monitored continually except for the infrequent times when
there may be no flow or for infrequent maintenance activities on the flow device,
8. Types of Samples
a. Composite Sample: A composite sample shall consist of:
(1) a series of gab samples collected at equal time intervals over a 24 hour peril of
discharge and combined proportional to the rate of flow measured at the tithe of
individual sample collection, or
(2) a series of grab samples of equal volume collected over a 24 hour period with the
time intervals between samples determined by a preset number of gallons passing
the sampling point. Flow measurement between sample intervals shall be
determined by use of a flow recorder and totalizer, and the present gallon interval
between sample collection fixed at no greater than 1 /24 of the expected total daily
flow at the treatment system, or
(3) a single, continuous sample collected over a 24 hour period proportional
to the rate of flow.
In accordance with (1) above, the time interval between influent grab samples shall be
no greater than once per hour, and the time interval between effluent grab samples shall
be no greater than once per hour except at wastewater treatment systems having a
detention time of greater than 24 hours. In such cases, effluent grab samples may be
collected at time intervals evenly spaced over the 24 hour period which are equal in
number of hours to the detention time of the system in number of days. However, in
no case may the time interval between effluent grab samples be greater than six (6)
hours nor the number of samples less than four (4) during a 24 hour sampling period.
b. Grab Sample: Grab samples are individual samples collected over a period of time not
exceeding 15 minutes; the grab sample can be taken manually.
9. Galculatipn of Means
a Arithmetic Mean: The arithmetic mean of any set of values is the summation of the
individual values divided by the number of individual values.

Part II
Page 4 of 14
b. Geometric Mean: The geometric mean of any set of values is the Nth root of the
product of the individual values where N is equal to the number of individual values.
The geometric mean is equivalent to the antilog of the arithmetic mean of the logarithms
of the individual values. For purposes of calculating the geometric mean, values of
zero (0) shall be considered to be one (1),
c. Weighted by Flow Value: Weighted by flow value means the summation of each
concentration times its respective flow divided by the summation of the respective
flows.
10. Calendar Day
A calendar day is defined as the period faroiri irtidnight of one day until midnight of the next
day. However, for purposes of this permit, any consecutive 24-hour period that
reasonably represents the calendar day may be used for sampling.
11. Hazardous Substance
A hazardous substance means any substance designated under 40 lei Dart 116 pursuant
to Section 311 of the Clean Water Act.
12. Toxic Pollutant
A toxic pollutant is any pollutant listed as toxic under Section 307(a)(1) of the Clean a
Act.
SECT ON E. ENEITIONS
1. Duty
rap!
The perrnittee must comply with all conditions of this permit. Any permit noncompliance
constitutes a violation of the Clean Water Act and is grounds for enforcement action; for
permit termination, revocation and reissuance, or modification; or denial of a permit
renewal application.
a. The permittee shall comply with effluent standards or prohibitions established under
section 307(a) of the Clean Water Act for toxic pollutants and with standards for
sewage sludge use or disposal established under section 405(d) of the Clean Water Act
within the time provided in the regulations that establish these standards or
prohibitions, even if the permit has not yet been modified to incorporate the
requirement.
b. The Clean Water Act provides that any person who violates a permit condition is
subject to a civil penalty not to exceed $25,000 per day for each violation.
Any person who negligently violates any permit condition is subject to criminal
penalties of $2,500 to $25,000 per day of violation, or imprisonment for not more than
1 year, or both. Any person who knowingly violates permit conditions is subject to
criminal penalties of $5,000 to $50,000 per day of violation, or imprisonment for not
more than 3 years, or both. Also, any person who violates a permit condition may be
assessed an administrative penalty not to exceed $10,000 per violation with the
maximum amount not to exceed $125,000. [Ref: Section 309 of the Federal Act 33
U.S.C. 1319 and 40 CFR 122.41 (a)]

Part II
Page 5 of 14
c. Under state law, a daily civil penalty of not more than ten thousand dollars ($10,000)
per violation may be assessed against any person who violates or fails to act in
accordance with the terms, conditions, or requirements of a permit. (Ref: North
Carolina General Statutes § 143-215.6 (a))
2. Duty to)4itigate
The permittee shall take all reasonable steps to minis
violation of this permit which has a reasonable likelih
health or the environment
e or prevent any discharge in
of adversely affecting human
3. Civil and Criminal Liability
Except as provided in permit conditions on "Bypassing" (Part 11, C.4.) and "Power
Failures" (Part II, C.7,), nothing in this permit shall be construed to relieve the permittee
from any responsibilities, liabilities, or penalties for noncompliance pursuant to NCGS
143-215.3, 143-215.6 or Section 309 of the Federal Act, 33 USC 1319. Furthermore, the
permittee is responsible for consequential damages, such as fish kills, even though the
responsibility for effective compliance may be temporarily suspended.
4. Oil_and Hazardous Substance Liability
Nothing in this permit shall be construed to preclude the institution of any legal action or
relieve the permittee from any responsibilities, liabilities, or nalties to which the permittee
is or may be subject to under NCGS 143-215.75 et seq. or Section 311 of the Federal Act,
33 USG 1321. Furthermore, the permittee is responsible for consequential damages, such
as fish kills, even though the responsibility for effective compliance may be temporarily
suspended.
Property Rights
The issuance of this permit does not convey any property rights in either real or personal
property, or any exclusive privileges, nor does it authorize any injury to private property or
any invasion of personal rights, nor any infringement of Federal, State or local laws or
regulations.
6. Onshore or Offshore .const
This permit does not authorize or approve the construction of any onshore or offshore
physical structures or facilities or the undertaking of any work in any navigable waters.
7. Severability
The provisions of this permit are severable, and if any provision of this permit., or the
application of any provision of this permit to tiny circumstances, is held invalid, the
application of such provision to other circumstances, and the remainder of this permit, shall
not be affected thereby.

8. Duty to Provide Information
Part ll
Page 6 of 14
The permittee shall furnish to the Permit Issuing Authority, within a reasonable time, any
information which the Permit Issuing Authority may request to determine whether cause
exists for modifying, revoking and reissuing, or terminating this permit or to determine
compliance with this permit. The permittee shall also furnish to the Permit Issuing
Authority upon request, copies of records required to be kept by this permit.
9. Duv tp RealtciY
If the permittee wishes to continue an +t tivity regaiated by this permit after the expiration
date of this permit, the permittee must apply for and obtain a new permit.
10.. Expiration of Permit
The permittee is not authorized to discharge after the expiration date. In order to receive
automatic authorization to discharge beyond the expiration date, the permittee shall submit
such information, forms, and fees as are required by the agency authorized to issue permits
no later than 180 days prior to the expiration date. Any discharge that has not requested
renewal at least 180 days prior to expiration, or any discharge that does not have a permit
after the expiration and has not requested renewal at least 180 days prior to expiration, will
subject the permittee to enforcement procedures as provided in NCGS 143-215.6 and 33
USC 1251 et. seq.
11. Signatory Requirements
All applications, reports, or information submitted to the Permit Issuing Authority shall be
signed and certified.
a. All permit applications shall be signed as follows:
(1) For a corporation: by a responsible corporate officer. For the purpose of this
Section, a responsible corporate officer means: (a) a president, secretary, treasurer
or vice president of the corporation in charge of a principal business function, or
any other person who performs similar policy or decision making functions for the
corporation, or (b) the manager of one or more manufacturing production or
operating facilities employing more than 250 persons or having gross annual sales
or expenditures exceeding 25 million (in second quarter 1980 dollars), if authority to
sign documents has been assigned or delegated to the manager in accordance with
corporate procedures.
(2) For a partnership or sole proprietorship: by a general partner or the proprietor,
respectively; or
(3) For a municipality, State, Federal, or other public agency: by either a principal
executive officer or ranking elected official.
b. All reports required by the permit and other information requested by the Permit Issuing
Authority shall be signed by a person described above or by a duly authorized
representative of that person. A person is a duly authorized representative only if:
(1) The authorization is made in writing by a person described above;
(2) The authorization specified either an individual or a position having responsibility
for the overall operation of the regulated facility or activity, such as the position of
plant manager, operator of a well or well field, superintendent, a position of

Part II
Page 7 of 14
equivalent responsibility, or an individual or position having overall responsibility
for environmental matters for the company. (A duly authorized representative may
thus be either a named individual or any individual occupying a named position.);
and
(3) The written authorization i submitted to the Permit Issuing Authonty.
c. Certification. Any person signing a document under paragraphs a. or b. of this section.
shall make the following certification:
"I certify, under penalty of law, that this document and all attachments were prepared
under my direction or supervision in accordance with a system designed to assure that.
qualified personnel properly gather and evaluate the information submitted. Based on
my inquiry of the person or persons who manage the system, or those persons directly
responsible for gathering the information, the information submitted is, to the best of
my knowledge and believe, true, accurate, and complete. I am aware that there are
significant penalties for submitting false information, including the possibility of fines
and imprisonment for knowing violations."
12. rmit Actions.
This permit may be modified, revoked and reissued, or terminated for cause.The filing of a
request by the perrnittee for a permit modification, revocation and reissuance, or
termination, or a notification of planned changes or anticipated noncompliance does not
stay any permit condition.
13. Femiit Modification. Revocation and Reissuance. +or Termination
The issuance of this permit does not prohibit the permit issuing authority from reopening
and modifying the permit, revoking and reissuing the permit, or terminating the permit as
allowed by the laws, rules, and regulations contained in Title 40, Code of Federal
Regulations, Parts 122 and 123; Title 15A of the North Carolina Administrative Code,
Subchapter 2H .0100; and North Carolina General Statute 143-215.1 et. al.
14. Previous Permits
The exclusive authority to operate this facility arises under this permit. The authority to.
operate the facility under previously issued permits bearing this number is no longer
effective. The conditions, requirements, terms, and provisions of this permit authorizing
discharge under the National Pollutant Discharge Elimination. System govern discharges
from this facility.
SECTION C.OPERATION AND MAINTENANCE OF PO ON C NT'ROLS
1. Certified Operator
Pursuant to Chapter 90A-44 of North Carolina General Statutes, the permittee shall
employ a certified wastewater treatment plant operator in responsible charge (ORC) of the
wastewater treatment facilities. Such operator must hold a certification of the grade
equivalent to or greater than the classification assigned to the wastewater treatment
facilities. The permittee shall notify the Division's Operator Training and Certification Unit
within thirty days of any change in the ORC status.

Part II
Page 8 of 14
2. Proper Oration and Maintenance
The permittee shall at all times properly operate and maintain all facilities and systems of
treatment and control (and related appurtenances) which are installed or used by the
permittee to achieve compliance with the conditions of this permit. Proper operation and
maintenance also includes adequate laboratory controls and appropriate quality assurance
procedures. This provision requires the operation of back-up or auxiliary facilities or
similar systems which are installed by a permittee only when the operation is necessary to
achieve compliance with the conditions of the permit.
3. Need to Halt or Reduce not aDfense
It shall not be a defense for a perrnittee in an enforcement action that it would have been
necessary to halt or reduce the permitted activity in order to maintain compliance with the
condition of this permit.
4. Bypassing of Treatment Facilities
a. Definitions
(1) °'Bypass" means the known diversion of waste streams from any portion of a
treatment facility including the collection system, which is not a designed or
established or operating mode for the facility.
(2) "Severe property damage" means substantial physical damage to property, damage
to the treatment facilities which causes them to become inoperable, or substantial
and permanent loss of natural resources which can reasonably be expected to occur
in the absence of a bypass. Severe property damage does not mean economic loss
caused by delays in production.
b. Bypass not exceeding limitations.
The permittee may allow any bypass to occur which does not cause effluent limitations
to be exceeded, but only if it also is for essential maintenance to assure efficient
operation. These bypasses are not subject to the provisions of Paragraphs c. and d. of
this section.
c. Notice
(1) Anticipated bypass. If the perrnitt knows in advance of the need for a bypass, it
shall submit prior notice, if possible at least ten days before the date of the bypass;
including an evaluation of the anticipated quality and affect of the bypass.
(2) Unanticipated bypass. The permittee shall submit notice of an unanticipated bypass
as required in. Pan II, E. 6. of this permit. (24-hour notice).
d. Prohibition of Bypass
(1) Bypass is prohibited and the Permit Issuing Authority may take enforcement action
against a permittee for bypass, unless:
(a) Bypass was unavoidable to prevent loss of life, personal injury or severe
property damage;

PartII
Page 9 of 14
(b) There were no feasible alternatives to the bypass, such as the use of auxiliary
treatment facilities, retention of untreated wastes or maintenance during normal
periods of equipment downtime. This condition is not satisfied if adequate
backup equipment should have been installed in the exercise of reasonable
engineering judgment to prevent a bypass which occurred during normal
periods of equipment downtime or preventive maintenance; and
(c) The permittee submitted notices as required under Paragraph c. of this section.
The Permit Issuing Authority may approve an anticipated bypass, after considering
its adverse affects, if the Permit Issuing Authority determines that it will meet the
three conditions listed above in Paragraph d. (1) of this section.
5. Upsets
a. Definition.
"Upset " means an exceptional incident in which there is unintentional and
temporary noncompliance with technology based permit effluent limitations because of
factors beyond the reasonable control of the permittee. An upset does not include
noncompliance to the extent caused by operational error, improperly designed treatment
facilities, inadequate treatment facilities, lack of preventive maintenance, or careless or
improper operation.
b. Effect of an upset.
An upset constitutes an affirmative defense to an action brought for
noncompliance with such technology based permit effluent limitations if the
requirements of paragraph c. of this condition are met. No determination made during
administrative review of claims that noncompliance was caused by upset, and before an
action for noncompliance, is final administrative action subject to judicial review.
c. Conditions necessary for a demonstration of upset.
A permittee who wishes to establish the affirmative defense of upset shall demonstrate,
through properly signed, contemporaneous operating logs, or other relevant evidence
that:
(a) An upset occurred and that the pertnittee can identify the cuu(s) of the upset;
(b) The permittee facility was at the time being properly operated; and
(c) The permittee submitted notice of the upset as required in Part II, E. 6. (b) (B) of
this permit.
(d) The permitte complied with any remedial measures required under Part II, B. 2. of
this permit.
d. Burden of proof.
In any enforcement proceeding the permittee seeking to establish the occurrence of an
upset has the burden of proof.

Part II
Page 10 of 14
6. Removed ,Substances
Solids, sludges, filter backwash, or other pollutants removed in the course of treatment or
control of wastewaters shall be disposed of in accordance with NCGS 143-215.1 and in a
manner such as to prevent any pollutant from such materials from entering waters of the
State or navigable waters of the United States. The penmittec shall comply with all existing
federal regulations governing the disposal of sewage sludge. Upon promulgation of 40
CFR Part 503, any permit issued by the Permit Issuing Authority for the disposal of sludge
may be reopened and modified, or revoked and reissued, to incorporate applicable
requirements at 40 CFR Part 503. The permitter shall comply with applicable 40 CFR Part
503 Standards for the Use and Disposal of Sewage Sludge (when promulgated) within the
time provided in the regulation, even if the permit is not modified to incorporate the
requirement. The permittee shall notify the Permit Issuing Authority of any significant
change in its sludge use or disposal practices.
7. Power Failures
The permittee is responsible for maintaining adequate safeguards as required by DEM
Regulation, Title 15A, North Carolina Administrative Code, Subchapter 2H, .0124
Reliability, to prevent the discharge of untreated or inadequately treated wastes during
electrical power failures either by means of alternate power sources, standby generators or
retention of inadequately treated effluent.
5ECTIQND. MON1TQ'RING AND RECORDS
1. Representative Sampling
Samples collected and measurements taken, as required herein, shall be characteristic of the
volume and nature of the permitted discharge. Samples collected at a frequency less than
daily shall be taken on a day and time that is characteristic of the discharge over the entire
period which the sample represents. All samples shall be taken at the monitoring points
specified in this perrnit and, unless otherwise specified, before the effluent joins or is
diluted by any other wastestream, body of water, or substance. Monitoring points shall
not be changed without notification to and the approval of the Permit Issuing Authority.
2 , Earag
Monitoring results obtained during the previous month(s) shall be summarized for each
month and reported on a monthly Discharge Monitoring Report (DMR) Form (DEM No.
MR 1,1.1, 2, 3) or alternative forms approved by the Director, DEM, postmarked no later
than the 30th day following the completed reporting period.
The first DMR is due on the last day of the month following the issuance of the permit or in
the case of a new facility, on the last day of the month following the commencement of
discharge. Duplicate signed copies of these, and all other reports required herein, shall be
submitted to the following address:
Division of Environrnental Management
Water Quality Section
ATTENTION: Central Files
Post Office Box 27687
Raleigh, North Carolina 27611

Part lI
Page 11 of 14
Flow Measurements
Appropriate flow measurement devices and methods consistent with accepted scientific
practices shall be selected and used to ensure the accuracy and reliability of measurements
of the volume of monitored discharges. The devices shall be installed, calibrated and
maintained to ensure that the accuracy of the measurements are consistent with the accepted
capability of that type of device. Devices selected shall be capable of measuring flows with
a maximum deviation of Tess than 10% from the true discharge rates throughout the range
of expected discharge volumes. Once -through condenser cooling water flow which is
monitored by pump logs, or pump hour meters as specified in Part I of this permit and
based on the manufacturer's pump curves shall not be subject to this requirement,
4. Test Procedures
Test procedures for the analysis of pollutants shall conform to the EMC regulations
published pursuant to NCGS 143-215.63 et. seq, the Water and Air Quality Reporting Acts,
and to regulations published pursuant to Section 304(g), 33 USC 1314, of the Federal
Water Pollution Control Act, as Amended, and Regulation 40 CFR 136,
To meet the intent of the monitoring required by this permit, all test procedures must
produce minimum detection and reporting levels that are below the permit discharge
requirements and all data generated must be reported down to the minimum detection or
lower reporting level of the procedure. If no approved methods are determined capable of
achieving minimum detection and reporting levels below permit discharge requirements,
then the most sensitive (method with the lowest possible detection and reporting level)
approved method must be used.
5. Penalties for Tampering
The Clean Water Act provides that any person who falsifies, tampers with, or knowingly
renders inaccurate, any monitoring device or method required to be maintained under this
permit shall, upon conviction, be punished by a fine of not more than $10,000 per
violation, or by imprisonment for not more than two years per violation, or by both.
6. Records Retention
The permittee shall retain records of ail monitoring information, including all calibration
and maintenance records and all original strip chart recordings for continuous monitoring
instrumentation, copies of all reports required by this permit, for a period of at least 3
years from the date of the sample, measurement, report or application. This period may be
extended by request of the Director at any time,
7. ,Recording Results
For each measurement or sample taken pursuant to the uire:ments of this permit, the
permittee shall record the following information:
a. The date, exact place, and time of sampling or
b. The individual(s) who performed the sampling or measumen
c, The date(s) analyses were performed;
d. The individual(s) who performed the analyses;
e. The analytical techniques or methods used; and
f. The results of such analyses.
n

Part 11
Page 12 of 14
8. Inspection and Entry
The permittee shall allow the Director, or an authorized representative, upon the
presentation of credentials and other documents as may be required by law, to;
a. Enter upon the permittee°s premises where a regulated facility or activity is located or
conducted, or where records must be kept under the conditions of this permit;
b. Have access to and copy, at reasonable times, any records that roust be kept under the
conditions of this permit;
c. Inspect at reasonable times any facilities, equipment (including monitor nog and control
equipment), practices, or operations regulated or required under this per lit and
d. Sample or monitor at reasonable times, for the purposes of assuring permit compliance
or as otherwise authorized by the Clean Water Act, any substances or parameters at any
location.
CT JON E. REPORTING RE©UIREI'rIEN'T'S
1. Change in Discharge,
All discharges authorized herein shall be consistent with the terms and conditions of this
permit. The discharge of any pollutant identified in this permit more frequently than or at a
level in excess of that authorized shall constitute a violation of the permit.
2. Planned Changes
The permittee shall give notice to the Director as soon as possible of any planned physical
alterations or additions to the permitted facility. Notice is required only when:
a. The alteration or addition to a permitted facility may meet one of the criteria for
determining whether a facility is a new source in 40 CFR Part 122.29 (b); or
b. The alteration or addition could significantly change the nature or increase the quantity
of pollutants discharged. This notification applies to pollutants which are subject
neither to effluent limitations in the permit, nor to notification requirements under 40
CFR Part 122.42 (a) (1).
aticipated Noncompliance
T'he permittee shall give advance notice to the Director of any planned changes in the
permitted facility or activity which may result in noncompliance with permit requirements.
4. Transfer
This permit is not transferable to any person except after notice to the Director. The
Director may require modification or revocation and reissuance of the permittee and
incorporate such other requirements as may be necessary under the Clean Water Act.

Part II
Page 13 of 14
5. Monitoring Report
Monitoring results shall be reported at the intervals specified eiswhere in this pennit.
a. Monitoring results must be reported on a Discharge Monitoring Report (DMR) (See
Part H. D. 2. of this permit).
b. If the permittee monitors any pollutant more frequently than required by the permit,
using test procedures specified in Part II, D. 4, of this permit, the results of this
monitoring shall be included in the calculation and reporting of the data submitted in the
DMR.
c. Calculations for all limitations which require averaging of measurements shall utilize an
arithmetic mean unless otherwise specified by the Director in the permit.
6. Twenty-four Hour Reporting
a. The permittee shall report to the central office or the appropriate regional office any
noncompliance which may endanger health or the environment. Any information shall
be provided orally within 24 hours from the time the permittee became aware of the
circumstances. A written submission shall also be provided within 5 days of the time
the permittee becomes aware of the circumstances. The written submission shall
contain a description of the noncompliance, and its cause; the period of noncompliance,
including exact dates and tunes, and if the noncompliance has not been corrected, the
anticipated time it is expected to continue; and steps taken or planned to reduce,
eliminate, and prevent reoccurrence of the noncompliance.
b. The following shall be included as information which must be reported within 4 hours
under this paragraph.
(A) Any unanticipated bypass which exceeds any effluent limitation in the permit.
(B) Any upset which exceeds any effluent limitation in the permit..
(C) Violation of a maximum daily discharge limitation for any of the pollutants listed by
the Director in the permit to be reported within 24 hours.
c. The Director may waive the written report on a case -by -case basis for reports under
paragraph b. above of this condition if the oral report has been received within 24
hours.
7. Other Noncompliance
The permittee shall report all instances of noncompliance not re
and 6. of this permit at the time monitoring reports are submitted.
the information listed in Part II. E. 6. of this perrnit.
8. Other. Information
under Part I3. E. 5
ports shall contain
Where the permittee becomes aware that it failed to submit any relevant facts in a permit
application, or submitted incorrect information in a permit application or in any report tta the
Director, it shall promptly submit such facts or information.

Part. II
Page 14 of 14
9. Noncompliance Notification
The permittee shall report by telephone to either the central office or the appropriate regional
office of the Division as soon as possible, but in no case more than 24 hours or on the next
working day following the occurrence or first knowledge of the occurrence of any of the
following:
a. Any occurrence at the water pollution control facility which results in the discharge of
significant amounts of wastes which are abnormal in quantity or characteristic, such as
the dumping of the contents of a sludge digester, the known passage of a slug of
hazardous substance through the facility; or any other unusual circumstances.
b. Any process unit failure, due to known or unknown reasons, that render the facility
incapable of adequate wastewater treatment such as mechanical or electrical failures of
pumps, aerators, compressors, etc.
c. Any failure of a pumping station, sewer line, or treatment facility resulting in a by-pass
directly to receiving waters without treatment of all or any portion of the influent to
such station or facility..
Persons reporting such occurrences by telephone shall also file a written report in letter
form within 5 days following first knowledge of the occurrence.
10. Availability of Reports
Except for data determined to be confidential under NCGS 143-215.3(a)(2) or Section 308
of the Federal Act, 33 USC 1318, all reports prepared in accordance with the terms shall be
available for public inspection at the offices of the Division of Environmental Management.
As required by the Act, effluent data shall not be considered confidential. Knowingly
making any false statement on any such report may result in the imposition of criminal
penalties as provided for in NCGS 143-215.1(b)(2) or in Section 309 of the Federal Act.
11. Penalties for Falsification of Report
The Clean Water Act provides that any person who knowingly makes any false statement,
representation, or certification in any record or other document submitted or required to be
maintained under this permit, including monitoring reports or reports of compliance or
noncompliance shall, upon conviction, be punished by a fine of not more than $10,000 per
violation, or by imprisonment for not more than two years per violation, or by both,

PART HI
OTHER REQUIREMENTS
A. Construction
No construction of wastewater treatment facilities or additions to add to the plant's treatment
capacity or to change the type of process utilized at the treatment plant shall be begun until Final
Plans and Specifications have been submitted to the Division of Environmental Management
and written approval and Authorization to Construct has been issued.
B. Groundwater Monitoring
The permittee shall, upon written notice from the Director of the Division of Environmental
Management, conduct groundwater monitoring as may be required to determine the compliance
of this NPDES permitted facility with the current groundwater standards.
C. Changes in Discharges of Toxic Substances
The permittee shall notify the Permit Issuing Authority as soon as it knows or has reason to
believe:
a. That any activity has occurred or will occur which would result in the discharge, on a
routine or frequent basis, of any toxic pollutant which is not limited in the permit, if that
discharge will exceed the highest of the following "notification levels";
(1) One hundred micrograms per liter (100 ug/l);
(2) Two hundred micrograms per liter (200 ug/1) for acrolein and acrylonitrile; five hundred
micrograms per liter (500 ug/l) for 2.4-dinitrophenol and for
2-methy1-4.6-dinitrophenol; and one milligram per liter (1 mg/1) for antimony;
(3) Five (5) times the maximum concentration value reported for that pollutant in the permit
application.
b. That any activity has occurred or will occur which would result in any discharge, on a
non -routine or infrequent basis, of a toxic pollutant which is not limited in the permit, if
that discharge will exceed the highest of the following "notification levels";
(1) Five hundred micrograms per liter (500 ug/1);
(2) One milligram per liter (1 mg/1) for antimony;
(3) Ten (10) times the maximum concentration value reported for that pollutant in the permit
application.

D. Dispcas
Permit No. NC 79758
The Permittee shall continually evaluate all wastewater disposal alternatives and pursue the most
environmentally sound alternative of the reasonably cost effective alternatives. If the facility is a.n
substantial non-compliance with the terms and conditions of the NPDES pennit or governing rules, ._
regulations, or laws, the perinittee shall submit a report in such form d detail as required by the
Division evaluating these alternatives and a plan of action within sixty (60) days of notification. by
the Division.

A. The
( days
accordance
revoke the
ust pay the c "g and complianc tiring fee within 3
er being billed by the Division. Failure to pay the fee i s a timely cr i
5A NCAC 2 .O1O5(€a)( may cause this Division to initiate an on f

PERMIT NO.: NC0079758
PERMITTEE NAME:
NPDES WASTE LOAD ALLOCATION
National Welders Supply Company, Inc.
Facility Status: Proposed
Permit Status:
New
Major
Pipe No.: 001
Design Capacity: 0.0014 MGD
Domestic (% of Flow):
Industrial (% of Flow):
Comments:
RECEIVE
OF EIVIIRCIc4401104.
DEC 7 V..;9J
5
(./
sTuAm uswx; 11-137-2
RECEIVING S
Class: C
X.7
Tarart creek
'7
Sub -Basin: 03-08-34
Reference USGS Quad: G15NW, Charlotte W. (please attach)
County: Mecklenburg
Regional Office: Mooresville Regional Office
Previous Exp. Date: 00/00/00 Treatment Plant Class:
Classification changes within three miles:
n ne to site line
Requested by: Jule Shanklin
Prepared by:
Reviewed by:
Date: 9/14 0
Date:
Date: 0
?
Date Rec.
Drainage (2mi. ) Avg. Streamflow cfs
7Q10 (cfs) 0 Winter 7Q10 (cfs) 0 30Q2 (cfs)
Toxicity Limits: IWC
Instream Monitoring:
Acute/Chronic
Parameters
Upstream Location
Downstream Location,
Effluent
Characteristics
BOD
-N m
D.O. (m
TSS (m
pH (SU)
Comments: Pei :
(.4.42.5 tato
0

Request
WASTELOAD ALLOCATION APPROVAL FORM
Facility Name:
NPDES No.:
Type of Waste:
Status:
Receiving Stream:
Classification:
Subbasin:
County:
Regional Office:
Requestor:
Date of Request:
Quad:
National Welders
NC0079758
Industrial
Proposed/New
UT to Taggart Creek
30834
Mecklenburg
Mooresville
Jule Shanklin
9/14/90
G15NW
No.: 5858
N. C. DEPT. OF NATURAL
- -RF,SrItrItCET AND
COMMUNITY DEVELOPMENT
Supply Co., Inc.
Drainage
Summer
Winter
Average
RECOMMENDED EFFLUENT LIMITS
PROPOSED
Wasteflow (mgd): 0.001N
TSS (mg/1) : 30
pH (su): 6-9
Alkalinity (mg/1): monitor
Hardness (mg/1): monitor
liss(Tv') 50 At,
Toxicity Testing Req.: none
Upstream (Y/N): N
Downstream (Y/N): N
MONITORING
Location:
Location:
---- COMMENTS ---
Existing, unpermitted discharge consisting of seepage from lagoon holding
lime slurry. The lime slurry is generated by the production of acetylene
gas. Discharge is to a dry ditch. Hook-up to CMUD is recommended.
PC 47 64-43kLuLC) 1,ct d C ii)16) co -it a 6atc
t
C.-k))thOri ',7)101. e victC C CA I A4 (iiu.,24k,L
RAD on 1(4)00,...tb (,,e4,4t X AO VIAL f otoCCt
area:
7010:
7Q10:
flow:
30Q2:
NOV1 9 1990
NM Of EIVICINKATki WiiGEMENT
NORISVIlif 110301, Int
sq mi
0.00 cfs
0.00 cfs
cfs
0.00 cfs
CEI
PERMiTS
Recommended by:
Reviewed by
Instream Assessment:
Regional Supervisor:
Permits & Engineering:
RETURN TO TECHNICAL SUPPORT BY: DEC 12 99
Date:
Date:
Date:
Date:

N r: ncrr. or NATURAL
"J? r.:3 AND
COMM, I-1,‘ !TY 1)1; F101'11E:NT
SEP ? 0 1990
DIVISION Of Uittid'i k7'
State of North Carolina 1400RESVILLE RECI0141 O'FfiCE"ir
Department of Environment, Health, and Natural Resources
Division of Environmental Management
512 North Salisbury Street • Raleigh, North Carolina 27611
James G. Martin, Governor
William W. Cobey, Jr., Secretary
9/17
Gerald S. Carter, VP
National Welders Supply Co., Inc.
PO Box 31007
Charlotte, NC 28231
Dear Mr. Carver
George T. Everett, PhD.
Director
Subject: NPDES Permit Application
NPDES Permit No.NC0079758
National Welders Supply
Mecklenburg
This is to acknowledge receipt of the following documents on
''N/ Application Form
Engineering Proposal (for proposed control facilities),
Request for permit renewal,
$200.00,
Application Processing Fee of
Other
The items checked below
Application Form
Engineering proposal (see attachment),
e needed before review can begin:
Application Processing Fee of
Delegation of Authority (see attached)
Biocide Sheet (see attached)
. Other
unty
September 12, 199C:
If the application is not made complete within thirty (30) days, it wiil be
returned to you and may be resubmitted when complete.
This application has been assigned to
(919/733-5083) of our Permits Unit for review You will be advised of a
comments recommendations, questions or other information necessary for lb
review of the application,
Jule Shanklin.
I am, by copy of this letter, requesting that our Regional Office
Supervisor prepare a staff report and. recommendations regarding this
discharge. If you have any questions regarding this applications,
please contact the review person listed. above.
Sincerely,
CC:
sAt
Dale OYercash, P.E.
Pollution PreNention Pays
70%4
P,O, Box 27687, Raleigh. North Carolina 27611-7687 Telephone [phone]

CHARLOTTE WEST QUA..QRANGLE
NORTH CAROLINA_AMECfK.LENBURG 00,
7.5 MINUTE SERIES (TOPOGRAPHIC)

Permit. No. NC0079758
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT, HEALTH, AND NATURAL RESOURCES
DIVISION OF ENVIRONMENTAL MANAGEMENT
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIO;NAL, POLLUTANT DISCHARGE ELIMJNATION 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.,
National Welders Supply Company, Inc.
is hereby authorized to discharge wastewater from a facility Located at
5313 Old Dowd Road
Charlotte
Mecklenburg County
to receiving waters designated as Taggart Creek in the Catawba River Basin
in accordance with effluent limitations, monitoring requirements, and other conditions set forth in
Pans I, II, and III hereof.
This permit shall become effective
This permit and the authorization to discharge shall expire at
Signed this day
fight on August 31, 1996
George T. Everett, Director
Division of Environmental Management
By Authority of the Environmental Management Concession

°
TO
National Wfd Supply
_' ` Road t
,
dug un
enburg Cot
S 1T
c;
See Pan f this Pe
2, an Au onzation to s
uct e ontrol facilities to
sI hol...g f
d
the Division of Eta .«.mntal getnettt
e nditions of this. . t, and
3 . Discharge said ttnent works at the ocation spectfi theCreek ai
which is class" ed Class C waters in the Catawba River Basin.
ched
p f st Taggart

A. (. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL
During the period beginning on the effective date of the
outfall(s) serial number 001. Such discharges shall be limited ted and monitored bytrmit and lasting until he permittee the s
as
ffluent haractsrlstic,.
Flow
Total Suspends
Turbidity
Alkalinity•••
Hardness***
olld
Lb1i
IliguL_Aya. Dolly Max
0.0014 MtJ
30,0 mg/I
• •
45.0 mg/I
x,
Permit No. NC007975g
authorized to dis+l barge from
below:
Quencv
Weekly
2/Month
Weekly
Monthly
Monthly
Instant + ous E
Grab
Grab U,D
Grab E
Grab E
* Sample locations: E - Effluent, U - Upstream, D Downstream
** The discharge shall not cause the turbidity of the receiving water to exceed 50 NTU. If the turbidity exceeds these Ieve
background conditions, the discharge level cannot cause any increase in the turbidity in the receiving water.is due to natut
***Expressed in mg/I of CaCO3
All samples collected should be of a representative discharge.
The pH shall not be less than 6.0 standard units nor
sample.greater than 9.0 standard units and shall be monitored weekly at the effluent by grab
There shall be no discharge of floating solids or visible foam in other than trace amounts.

Part ILI
Pe No. N 79758
s
The Perm sball continually evalu wastewater disposal
al atives and environmentallysound alternative of thereasonablycost effective alternatives. the facility ue the c
substantial non-compliancethe s conditionsof °i
regulations, or laws, the e itt shall submit report insuch fo e governinge NI:DES permit or e;
Division evaluating these alternatives i of tin by
the Division. s of notification b^

R op ct
Perm):
MRO
Recer
Completeness ±Application Pac
ate of Invest a 10n:
`tete SR Submitted for Review:
IT APPLIC .TION STATUS
or
t an Request
Telephone
a
c.
Date
Bawd.