NC0036196_Industrial User_20231229

City of Conover
Control Authority and/or Municipality
PERMIT
Industrial User Pretreatment Permit(IUP) RECEIVED
To Discharge Wastewater Under the
Industrial Pretreatment Program DEC 2 9 2023
101J 433.17 NCDEQ/DWR/NPDES
IUP Number 40 CFR Category(if Applicable)
North Carolina General Statute 143-215.1, any
compliance with the provisions of
applicable federal categorical pretreatment regulations, all other lawful standards and
regulations promulgated and adopted by the North Carolina Environmental Management
Commission, and the Control Authority and/or Municipality Sewer Use Ordinance. The
following Industry,hereafter referred to by name or as the permittee:
Industry name,permittee:
Engineered Controls International, Inc.
Facility Located at Street Address
911 Industrial Dr
City
Conover
State,Zip
North Carolina,28613
is hereby authorized to discharge wastewater from the facility located at the above listed
address into the sanitary sewer collection system and the wastewater treatment facility of
the Control Authority and/or Municipality listed below:
IUP Control Authority and/or Municipality WWTP name:
City of Conover/Clark Creek WWTP (Newton)
NPDES Number.
NC0031696
WIMP Address:
1407 McKay Rd
City,Stale,Zip
Newton,North Carolina 28658
in accordance with effluent limitations, monitoring requirements, and all other conditions
set forth in Parts I, II, and III of this Industrial User Pretreatment Permit(IUP).
Effective date, this permit and the authorization to discharge shall become
effective at midnight on this date:.
05/12/2023
Expiration date,this permit and the authorization to discharge shall expire at
midnight on this date:
05/12/2028
5111/..3
Date signed T1tIg

.—
SIU INSPECTION FORM
Name Of Industry: REGO Engineered Controls Int'l
IUP# 101J
Address Of Industry: 911 Industrial Dr SW IUP Expiration Date:
Conover,NC 28613 5/12/2028
Industry Representatives: Title
T�,v‘ ENS r��wa•-e c r
.e.) Fd.,a t.45 gm-y cer F C' .
POTW Representatives: Titre91,3
_
;Gllet'l (n1 7➢' O toe.-.Je
Date Of Inspection: 3 //-91- 13 Time Of Inspection: 0C 4a &pm
Purpose of Inspection: Annual Other(Describe) de:�.3 irt r ,,d r 1�
POTW to which IU discharges Avg IN tYv'j f' Lv:ye u'C NPDES# At6-O oag 2 5 a
Is SIU currently in SNC? Po If yes,for what?
PART I-INITIAL INTERVIEW
Has anything changed since the last inspection or RiP application in the following:
COMMENTS
Product YES/4eP
Raw materials used YES/4.1
Manufacturing processes YES/
Categorical,if applicable YES/
Production rate YES/i,►�
Number of employees YES/
Number of shifts YES/
Comments:
•
PART II-PLANT TOUR- Visit all areas where wastewater is generated or where there are
drains to the POTW.
Plant Tour Section A-PRODUCTION AND STORAGE AREAS
1. Are there floor drains in the production area? S9/NO Where do they go? I u ��
a - f o 5 la c ck ka -5pOO 4se�\\o` S-ke o j? {-et L.
2. Are productiot areas diked,con fined,or otherwise constructed in such a way as to prevent harm to the WWTP,
especially from spills or slugs? /NO Comments: Cc&'-. > L CC C SS
it.co_ d°Lp ct
3. Are there floor drains in the storage area? CZE..t/NO Where do they go? smy -4r�
3b�c a\lQti
4. Are storage tanks and areas diked,contained,or otherwise constructed in such a way as to prevent harm to the
WWTP,especially from spills or slugs? f13/NO Comments: Peuu's"-/pi I-- A((
1-11e .' ��-�;t. l_ pc sS aye w c.,�S- p 1 b',c . 4-. >ceo e\lar\ 5t- .-ti..:12.
5. Are process and storage tanks and pipes labeled? /NO
6. How are off-spec raw materials,and products dispos of? 6-,10_,t C1.tires kas.AS U:.C'•'
f4w •r1c4A \ c�}�„ q�r i�c� iKdvis r s IAA u(5 rinehc�1
7. When is the production area cleaned?' irrY ego
8. Is the wastewater from cleaning the production area discharged to the POTW? YES/(I
9. What non-process wastewaters are discharged to POTW? Cr,IQ 1-c r i'- cod tot, tram Frt.S
Title: SIU Inpsection Fonn
File name: COMP.INSP App 7-D
Revision data: August 1,1994 Page 1

' L.
•
SIU INSPECTION FORM
Comments:
PART II-Plant Tour Section B-PRETREATMENT SYSTEM '
Ask the operator to describe pretreatment system.
1. Does operator seem knowledgeable about the system? /NO Comments: 6v 4 vie,/
,i11 - 'ivtI I)pe -)-0C 5gz►t5 ;,+ery TAP 1ea,5,,,,to\e' ifSep}-- A4 i•-, 52rvz `,
2. Ake all units operational? /NO
3. How often does operator/maintenance person check system? MI di
4. Is there an operator for each shift? YES/CV
5. How and when is sludge disposed of? p _. -Id ��50L) '5 I t.JLes. @trf•'r Me eagZ
z
6. Is there a schedule for preventative maintenance? 49/NO
Comments: t,.. 1 u5Q 9t ,,eA j\c c pre qi,.,tveLs,;(f. n i+en-4:Nce
PART II-Plant Tour Section C -SAMPLING POINT(S)AND FLOW MEASUREMENT
(Collect a sample if desired.)
1. Does an outside lab complete sampling? (a,/NO If yes,name of lab. �i�c-c 4 f c-A-C
2. If industry completes sampling,ask the industry representative to describe sampling procedures. Comments:
v r - , too .. as-0 ML o,'_ s+kw,. #� Pc�r.t�t)C6-lY L,,
3. Is flow measurementr equipment operational? C.�'/NO Comments: r nw (�c,� l,G .w
CAN30r,,.Aii.+:1. tg) S ye41 C.-ck-0, '.-4 rya p,'yii-4.,\ f•PC,,d it\o-+3 liel—QC
4. Is there a calibration to or the flow meter? 0) Comments:
Comments:
PART III-EXIT INTERVIEW
Review monitoring records and other SIU records required by IUP.
1. Are files well organized? et/NO Comments: �.,c•r �4 �$)j is c:.:ic 'itticpl,' as ogee cl
2. Are sample collection/chain-of-custody forms filled out prof erly? NO Comments:
3. Do results in files agree with reports sent to POTW? /NO Comments:
4. Who has authority to shut down production should a spill or slug discharge occur? An, b0 1
evv 1oy{ec a{P .•,ftclv'►�2& �y� 4.6.uc av- -: fo
5. How does SIU inform employees of whom to call at POTW in case of spill/slug? c.41-
(51-5 0 cSired ov-•- L .4JAr pp,—r)cl,,,c-•4i ctr1._ ACC c1/4-S
If slug/spill plate is already required by POTW review procedures.
6. Is SIU implementing slug/spill plan? UP NO Comments:
Comments: •
INSPECTION RESULTS
Slug/Spill Control Plan Needed? NO
Comments,Required Or Recommended Actions: VroCe 55 142 brew t.\a v i w
ttr(y 500a wercc:,,( crtt-or-- E61 d,'d t.-b - i+ti-P ccrn-
porn) or Wk',-t. new eon:S5 'W.43. W'cli 4,I.N.6 h (. 'r►'e
operu.C6o-cif vr<iii iY1.5pec.kto+'s..
Title: SIU Inpsection Form
File name: COMP.INSP App 7-D
Revision data: August 1,1994 Page 2
1

• } ��4
SIU INSPECTION FORM
Signature Of Inspector(s) ,' -�i� � _ Date: /F—a(-a3
Date:
•
•
•
Title: SIU Inpsection Form
File name: COMP.INSP App 7-D
Revision data: August 1,1994 Page 3

IUP Synopsis
A. IUP Basic Information
Re:civtng POTu name POTW NPDES«
City of Conover/Clark Creek WWTP (Newton) NC0036196
JLP �a^te IUP Number
Engineered Controls International Inc 101J
IUP Effective date Pipe Numbers.list all regulated pipes
05/12/2023 001
IUP Expiration date. •IUP 40 CFR 0.if applicable
05/12/2028 433.17
B. IU Survey & Application form
Attach a completed copy of the Industrial User Wastewater Survey &
Application Form (see appendix 6-A).
C. IU Inspection form
Attach a copy of an Industrial User Inspection Form (see chapter 7)
completed by the Control Authority within the past 12 months.
D. RATIONALE FOR LIMITATIONS:
as listed on the MP Limits Page(s), PART I, Section F of the IUP.
RATIONALE # 1:
Review of IU Monitoring Data, with no Over Allocation situation:
The following pollutants were assigned numerical limits in this IUP based
on a review of monitoring data for the permittee to determine what range
of concentrations are currently being discharged. To account for sample
variability a factor was applied to the monitoring data to determine the
permit limit. Permit limits assigned by the Local IUP Control Authority
can not result in an Over Allocation situation for any pollutants.
Limits are based on previous IUP and no changes are needed
J —
IUP 40
Synopsis Page: t

IUP Synopsis
RATIONALE # 2:
Categorical Industrial Limits, with no Over Allocation situation
Check here if Combined Wastestream Formula (CWF)was used. If used,
please attach calculations: (see CWF Spreadsheet, Appendix 6-F)
was used
was not used X
The following pollutants were assigned numerical limits in this IUP based
on the categorical regulations. These limits do not result in over
allocations.
EPA Title 40 CFR 433.17 Cadmium, Chromium,
Copper, Lead, Nickel, Silver, Zinc, Cyanide, TTO
RATIONALE # 3a:
Over Allocation Prevention, with IU pollutant reduction
The following pollutants were assigned numerical limits in this IUP based
on allocating the Maximum Allowable Industrial Loading (MAIL)
determined with the Headworks Analysis (HWA) among all Industrial
Users. The total loading of each pollutant from all permitted discharges
does not exceed the MAIL. These limits do not result in over allocations.
N/A
RATIONALE #3b:
Interim Limits for IU pollutant reduction:
The following pollutants were assigned interim numerical limits in this
IUP to allow time for the industry to come into compliance with final
limits which will not result in over allocations.
N/A
J
IUP# -
Synopsis Page: 2

IUP Synopsis
• RATIONALE #4:
4.) Other Rationale for Limitations:
The following basis was used for developing IUP Limits:
N/A
and was applied to the following pollutants:
N/A
A
RATIONALE #5:
No Limit needed or assigned in an IUP:
The following pollutants were not assigned numerical limits in this IUP
because the loadings for these pollutants from this IU was less than 5 %
of the MARL. The loading of these pollutants from this IU is considered
insignificant at this time.
Pollutant, of the MAHL
•
N/A
1
1UPN
Synopsis Page: 3

Industrial User Pretreatment Permit (IUP)
PART I
Specific Conditions
City of Conover
Control Authority and/or Municipality
PERMIT
DEC 2 V 2023 C:.t.'ofConovcr
wa:ca'.G:.Y
PERMIT
NCDEQ/DWR/NPDES Indu -ria1l y1-:Prr•.Ir./iineorl'elvit(TTTP)
To Discharge Wastcw,412r I fr;le, I:.le
lndi trkti I''tn:a.:-nchll Fri!srar:r
i L}11 .1310
In cornpliar_cc tvi it lhv protii i,n, of Norm Caro.inA {:i::ner(I 54_I1..Lc' I4S 215.1, any
applicable fcdercil categorical pretreatnr;:rr. �:e'.rls�l.utTI t. :::1 t,_ilur la'tirtuJ s:;uid lids l,nd 1'
rcgu1tti a 1„,n„ulpana3 and adopted Ley Il:c Norlil Cu la I•:n..'Irolur.erral 1butHeeme,t
• [Carry iin:,,ina the C:ui:l_oJ Authh:itw'witlror A4:Inic:palii}'Szw r L 4 (.1irt u• . The
fill hc_.eaftcr roti:-rcd lit by tame or at the ncrmiaCe; rk�•
Eulgi:x n d C.OI:troL l:rcr'caiicv,al.
FaoI r_way,--1 yl r,l r."1.w.,
91 i lntlustiial •
•
Lyn 7
North Carolina,
h 1:z,T4b}• tli-c•lis:g:.W,t_t;.:wr>Lc'r lr(,tn tht facility locat;,c+NI.I.he uh t e 1ita d
tiddre.,ir•ix' tht. %anilay s:vsc:c,yllcx::iln, )...yste:ri raid the write►at:.'r Ircullk".allt la.zility of
Illy('u ir(ll Authority audio- cif!Al lisititl bt;c/v'_ '
►I•'G'.:JauJ...i•.KY'R1.' '1.1Y 1•ram" .r
(';F -A,•er Clark t:rc;ck\V 11,T'P{Ne\a l we/
City�= C
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N t•f)UJ,6.9'6 i1
rie Iv-J�.: a
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14ev.'tileisit h( lrlli_ia2RGJS
iu ace..ugli i1:C Il-iuclit 1hnita:i011s, r uira:'lents. and,tll illl:tr U)n:litiolts
•iul1•;xlh liI'ulLiI. 11,and n(Jr hhih 1litrI'iematiu.rPermit(TT0P).
r rrer are.t•.,a-Tml'. Ia.b-•r.r.chi. i:('C.'6
..Iw.ti i. ,.r - - I•I•.
05/12'21023
?T^I-,-r.. . In ..- ._r aq
j 05iI2/21)2s _
y

Industrial User Pretreatment Permit (IUP)
PART I
Specific Conditions
Industrial User Pretreatment Permit (IUP)
To Discharge Wastewater Under the
Industrial Pretreatment Program
IUP, PART I, OUTLINE:
A.) IUP Basic Information
B.) IUP Modification History
C.) Authorization Statement
D.) Description of Discharges
E.) Schematic and Monitoring Locations
F.) Effluent Limits & Monitoring Requirements
G.) Definitions and Limit Page(s) notes
A. IUP Basic Information:
Receiving Control Authority&WWTP name: POTW NPDES#:
City of Conover/Clark Creek WWTP (Newton) NC0036196
IUP Name: IUP Number:
Engineered Controls International, Inc. 101J
IUP Effective date: Pipe Numbers,list all regulated pipes:
05/12/2023 001
IUP Expiration date: IUP 40 CFR#(if applicable),or N/A:
05/12/2028 433.17
B. IUP History. (A Complete Permit History is required):
Renewal or Description of changes over previous IUP.
Modification
05/01/98 Original Issue
09/04/98 Modification Flow limit raised to 0.012
12/07/98 Modification Flow limit raised to 0.022
02/18/98 Modification Permit corrected to lower cyanide limit
02/16/99 Modification Permit reissued added special conditions 9 and
10 on additional monitoring and treatment unit
operations.
05/01/03 Modification Permit reissued removed part II 7 and 8
regarding TTO certification and part II, 8-Toxic
organic management plan.
06/30/04 Modification Removed TSS and Oil and Grease limit, added
TTO certification to Special Conditions, lowered
cyanide limit to 0.021 mg/1.
03/01/05 Modification Ion exchange treatment system online.

Industrial User Pretreatment Permit (IUP)
PART I
Specific Conditions
05/01/08 Modification Oil and grease lab detection limit changed from
1to5mg/1.
05/01/08 Renewal
5/1/13 Renewal
7/29/13 Modification Monthly metals parameters to quarterly.
6/20/16 Modification Remove TSS and Oil/Grease from POTW sampling
Change effective date from 7/25/13 to 6/14/16.
Move IUP daily monitoring of flow and pH to
monthly and reporting of flow and pH from monthly
to quarterly
4/30/18 Renewal
7/25/18 Modification Flow limits changed to 0.006 daily and 0.005 monthly
Silver limits changed to 0.020 mg/1 daily and 0.010
7/25/18 Modification monthly ave
Cyanide- daily max 1.20 mg/1
7/25/18 Modification monthly ave 0.065mg/1
Permit updated to most recent model IUP
7/25/18 Update
Changed Person of contact for POTW
1/19/2022 Update
5/12/2023 Renewal
12/8/2023 Modification IU Treatment Units and Treatment Process Updated
C.) Authorization Statement:
1.) The Permittee is hereby authorized to discharge wastewater in accordance with
the effluent limitations, monitoring requirements, and all other conditions set
forth in this Industrial User Pretreatment Permit(IUP) into the sewer collection
system and wastewater treatment facility of the Control Authority and/or
Municipality.

Industrial User Pretreatment Permit (IUP)
PART I
Specific Conditions
2.) The Permittee is hereby authorized to continue operation of and discharge
wastewater from the following treatment or pretreatment facilities. These
facilities must correspond to the treatment units listed on both the application
and inspection forms.
IU Treatment Units
Paint Storage Process Materials
T11O/T12O(Vibratory Dump Tanks) Holds Vibratory Process Water for
Treatment Via Wastewater System
T1OO (Equalization Tank) Equalization Tank for Wash and
Chromate Process Water
T2OO(Batch Treatment Tank) Physical/Chemical Treatment
T21O (Sludge Holding Tank) Pre-Sludge Processing Tank
Filter Press Solids Processing
T3OO (pH Adjustment Tank) Tank Used to Lower pH (Acid Feed)
F3OO(Bag Filter) Filter to Remove Solids
SIX System(Ion Exchange Columns) PC-R-8030(Two Columns-Cation
Exchange Resin)
T4OO(Final pH Adjustment Tank) Tank Used to Bring pH to Neutral
(Acid/Alkaline Feed)
14OO(Bag Filter) Filter to Remove Solids
3.) The Permittee is hereby authorized to, if required by the Control Authority
and/or Municipality and after receiving Authorization to Construct (A to C)
from the Control Authority and/or Municipality, construct and operate
additional pretreatment units as needed to meet final effluent limitations.
D.) Description of IUP Discharge(s):
1. Describe the discharge(s) from all regulated pipes.
Pipe# 001 , Description of Discharge:
Chromatin and parts wash process water

Industrial User Pretreatment Permit (IUP)
PART I
Specific Conditions
E.) Schematic and Monitoring Locations:
The facility schematic and description of monitoring location(s) given below must
show enough detail such that someone unfamiliar with the facility could readily find
and identify the monitoring location(s) and connection to the sewer. Include and
identify all regulated pipes.
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a I s I II as
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IUP Part 1 Section F: Receiving POTW name=> Clark Creek IU name=> Engineered Controls
International Inc.
Effluent Limits and Monitoring Requirements Receiving POTW NPDES#_> NC0036196 IUP#_> 101J
Effective date for these Limits=> 05/12/2023 Pipe#_> 001
The Permittee may discharge from this specific Expiration date for these Limits=> 05/12/2028 40 CFR#_> 433.17
Pipe number according to these specific dates,
effluent limits, and monitoring requirements THE LIMITS ON THIS PAGE ARE,(Check one below):
LIMITS for ENTIRE permit period => X
INTERIM Limits for period# 1 =>
INTERIM Limits for period#2 =>
FINAL Limits Page =>
Concentration Limits Mass Limits Monitoring Frequency
Required
Sample Laboratory
Collection Detection
Monthly Monthly Method Level
Daily Max Average Units Daily Max Average Units By Industry By POTW (C or G) (Mg/I)
1 Flow 0.006 0.003 MGD Daily Semi-annual Continuous
2 PH 6-10 6-10 S.U. Daily Semi-annual G
OTHER PARAMETERS:
3 Chromium 2.770 1.710 Mg/I Quarterly Semi-annual C 0.01
4 Copper 0.800 0.800 Mg/I Quarterly Semi-annual C 0.02
5 Zinc 2.610 1.480 Mg/I Quarterly Semi-annual C 0.005
6 Silver 0.020 0.010 Mg/1 Quarterly Semi-annual C 0.006
7 Cadmium 0.110 0.070 Mg/I Quarterly Semi-annual C 0.005
8 Lead 0.690 0.430 Mg/1 Quarterly Semi-annual C 0.04
9 Nickel 0.100 0.100 Mg/1 Quarterly Semi-annual C 0.013
10 Cyanide 1.200 0.065 Mg/1 Quarterly Semi-annual C 0.005
11 *TTO 2.130 Mg/1 *Annually *Annually G/C
12
13
14
15
16
17
18
19
20

Industrial User Pretreatment Permit (IUP)
PART I
Specific Conditions
G.) Definitions and Limit Page(s) notes:
In addition to the definitions in the City of Conover Sewer Use Ordinance the
following definitions and requirements apply:
1. Composite Sample:
Unless defined differently below, a composite sample for the
monitoring requirements of this IUP, is defined as the automatic or
manual collection of one grab sample of constant volume, not less than
100 ml, collected every hour during the entire discharge period on the
sampling day. Sampling day shall be a typical production, and
discharge day.
2. Composite Sample, alternative definition:
A composite sample for the monitoring requirements of this IUP is the same
as described above unless specifically defined below as the automatic or
manual collection of constant volume and constant time grab samples
collected and composited according to the following criteria:
specific volume of each grab sample = 250 Milliliters
specific time interval between samples = 1 Hours
total duration of sample collection period= * Hours
Total number of grab samples to be composited= * Samples
3. Daily Monitoring Frequency
Daily Monitoring Frequency as specified in this IUP shall mean each day
of discharge.
4. Grab Sample
Grab sample for the monitoring requirements of this IUP, is defined as a
single "dip and take" sample collected at a representative point in the
discharge stream.
5. Instantaneous measurement
An Instantaneous measurement for the monitoring requirements of this IUP
is defined as a single reading, observation, or measurement.

IUP Synopsis
Industrial User Pretreatment Permit Part II
General Conditions
Outline of PART II, General Conditions
1. Representative Sampling 16. Federal and/or State Laws
2. Reporting 17. Penalties
3. Test Procedures 18. Need to Halt or Reduce
4. Additional Monitoring by 19. Transferability
Permittee
5. Duty to comply 20. Property Rights
6. Duty to Mitigate 21. Severability
7. Facilities Operation, Bypass 22. Modification, Revocation,
Termination
8. Removed substances 23. Reapplication
9. Upset Conditions 24. Dilution Prohibition
10. Right of Entry 25. Reports of Changed Conditions
11. Availability of Records 26. Construction of pretreatment
facilities
12. Duty to provide information 27. Reopener
13. Signatory Requirements 28. Categorical Reopener
14. Toxic Pollutants 29. General Prohibitive Standards
15. Civil and Criminal Liability 30. Reports of Potential Problems
1. Representative Sampling
Samples and measurements taken as required herein shall be representative of the volume and nature
of the monitored discharge. 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 approval by,the permit issuing authority.
2. Reporting
a.) Monitoring results obtained by the permittee shall be reported on forms specified by the
City of Conover, postmarked no later than the twentieth day of the month following the
month in which the samples were taken. If no discharge occurs during a reporting period
(herein defined as each calendar month)in which a sampling event was to have occurred,
a form with the phrase "no discharge" shall be submitted. Copies of these and all other
reports required herein shall be submitted to the Control Authority and/or Municipality and
shall be sent to the following address:
Andrew Evans
[e-mail]
Pretreatment Coordinator
City of Conover
1

IUP Synopsis
PO Box 549
Conover,NC 28613
b.) If the sampling performed by the permittee indicates a violation,the permittee shall notify the
Control Authority and/or Municipality within 24 hours of becoming aware of the violation. The
permittee shall also repeat the sampling and analysis and submit the results of the repeat
analysis to the Control Authority and/or Municipality within 30 days after becoming aware of
the violation.
3. Test Procedures
Test procedures for the analysis of pollutants shall be performed in accordance with the techniques
prescribed in 40 CFR part 136 and amendments thereto unless specified otherwise in the monitoring
conditions of this permit.
4. Additional Monitoring by Permittee
If the permittee monitors any pollutant at the location(s) designated herein more frequently than
required by this permit, using approved analytical methods as specified above,the results of such
monitoring shall be submitted to the Control Authority and/or Municipality. The Control Authority
and/or Municipality may require more frequent monitoring or the monitoring of other pollutants not
required in this permit by written notification.
5. Duty to Comply
The permittee must comply with all conditions of this permit.Any permit noncompliance constitutes
a violation of the Control Authority and/or Municipality Sewer Use Ordinance and is grounds for
possible enforcement action.
6. Duty to Mitigate - Prevention of Adverse Impact
The permittee shall take all reasonable steps to minimize or prevent any discharge in violation of
this permit which has a reasonable likelihood of adversely affecting human health,the POTW,the
waters receiving the POTW's discharge,or the environment.
7. Facilities Operation, Bypass
The permittee shall at all times maintain in good working order and operate as efficiently as possible,
all control facilities or systems installed or used by the permittee to achieve compliance with the
terms and conditions of this permit. Bypass of treatment facilities is prohibited except when
approved in advance by the Control Authority and/or Municipality. Bypass approval shall be given
only when such bypass is in compliance with 40 CFR 403.17.
8. Removed Substances
Solids,sludge,filter backwash,or other pollutants removed in the course of treatment or control of
wastewaters shall be disposed of in a manner such as to prevent any pollutants from such materials
from entering the sewer system. The permittee is responsible for assuring its compliance with any
requirements regarding the generation,treatment,storage,and/or disposal of"Hazardous waste"as
defined under the Federal Resource Conservation and Recovery Act.
9. Upset Conditions
An "upset" means an exceptional incident in which there is an unintentional and temporary
noncompliance with the effluent limitations of this permit because of factors beyond the reasonable
control of the permittee. An upset does not include noncompliance to the extent caused by
2

IUP Synopsis
operational error, improperly designed or inadequate treatment facilities, lack of preventative
maintenance,or careless or improper operations.
An upset may constitute an affirmative defense for action brought for the noncompliance. The
permittee has the burden of proof to provide evidence and demonstrate that none of the factors
specifically listed above were responsible for the noncompliance.
10. Right of Entry
The permittee shall allow the staff of the State of North Carolina Department of Environment and
Natural Resources, Division of Water Quality, the Regional Administrator of the Environmental
Protection Agency, the Control Authority and/or Municipality, and/or their authorized
representatives,upon the presentation of credentials:
1. To enter upon the permittee's premises where a real or potential discharge is located or
in which records are required to be kept under the terms and conditions of this permit;
and
2. At reasonable times to have access to and copy records required to be kept under the
terms and conditions of this permit;to inspect any monitoring equipment or monitoring
method required in this permit;and to sample any discharge of pollutants.
11. Availability of Records and Reports
The permittee shall retain records of all monitoring information, including all calibration and
maintenance records as well as copies of reports and information used to complete the application
for this permit for at least three years. All records that pertain to matters that are subject to any type
of enforcement action shall be retained and preserved by the permittee until all enforcement
activities have concluded and all periods of limitation with respect to any and all appeals have
expired.
Except for data determined to be confidential under the Sewer Use Ordinance,all reports prepared
in accordance with terms of this permit shall be available for public inspection at the Control
Authority and/or Municipality. As required by the Sewer Use Ordinance,effluent data shall not be
considered confidential.
12. Duty to Provide Information
The permittee shall furnish to the Director of Public Works or his/her designees,within a reasonable
time, any information which the Director, his/her designee, or the Division of Water Quality 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,upon request,
copies of records required to be kept by this permit.
13. Signatory Requirements
All reports or information submitted pursuant to the requirements of this permit must be signed and
certified by the Authorized Representative as defined under the Sewer Use Ordinance. If the
designation of an Authorized Representative is no longer accurate because a different individual or
position has responsibility for the overall operation of the facility, or overall responsibility for
environmental matters for the company, a new authorization satisfying the requirements of this
section must be submitted to the City of Conover Pretreatment Coordinator prior to or together with
anyreports to be signed byan authorized representative.
P g P
14. Toxic Pollutants
If a toxic effluent standard or prohibition(including any schedule of compliance specified in such
effluent standard or prohibition)is established under Section 307(a)of the Federal Clean Water Act
for a toxic pollutant which is present in the discharge and such standard or prohibition is more
3

IUP Synopsis
stringent than any limitation for such pollutant in this permit,this permit may be revised or modified
in accordance with the toxic effluent standard or prohibition and the permittee so notified.
15. Civil and Criminal Liability
Nothing in this permit shall be construed to relieve the permittee from civil or criminal penalties for
noncompliance.
16. Federal and/or State Laws
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 established pursuant to any applicable
Federal and/or State law or regulation.
17. Penalties
The Sewer Use Ordinance of the Control Authority and/or Municipality provides that any person
who violates a permit condition is subject to a civil penalty not to exceed$25,000 dollars per day of
such violation.
Under state law, (NCGS 143-215.6B), under certain circumstances it is a crime to violate terms,
conditions, or requirements of pretreatment permits. It is a crime to knowingly make 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. These crimes are enforced at the prosecutorial discretion of the local District
Attorney.
18. 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 to maintain compliance with the conditions of the permit.
19. Transferability
This permit shall not be reassigned or transferred or sold to a new owner, new user, different
premises,or a new or changed operation without approval of the Town.
20. Property Rights
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.
21. 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 circumstance is held invalid,the application of such provision to
other circumstances and the remainder of this permit shall not be affected thereby.
22. Permit Modification, Revocation, Termination
This permit may be modified, revoked and reissued or terminated with cause in accordance to the
requirements of the Control Authority and/or Municipality Sewer Use Ordinance and North
Carolina General Statute or implementing regulations.
23. Re-Application for Permit Renewal
4

IUP Synopsis
The permittee is responsible for filing an application for reissuance of this permit at least 180 days
prior to its expiration date.
24. Dilution Prohibition
The permittee shall not increase the use of potable or process water or in any other way attempt to
dilute the discharge as a partial or complete substitute for adequate treatment to achieve compliance
with the limitations contained in this permit.
25. Reports of Changed Conditions
The permittee shall give notice to the Control Authority and/or Municipality of any planned
significant changes to the permittee's operations or system which might alter the nature,quality,or
volume of its wastewater at least 180 days before the change. The permittee shall not begin the
changes until receiving written approval from the Control Authority and/or Municipality. Also see
Part II,30 below for additional reporting requirements for spill/slug issues.
Significant changes may include but are not limited to
(a) increases or decreases to production;
(b) increases in discharge of previously reported pollutants;
(c) discharge of pollutants not previously reported to the Control Authority and/or
Municipality;
(d) new or changed product lines;
(e) new or changed manufacturing processes and/or chemicals;or
(f) new or changed customers.
26. Construction
No construction of pretreatment facilities or additions thereto shall be begun until Final Plans and
Specifications have been submitted to the Control Authority and/or Municipality and written
approval and an Authorization to Construct(A to C)have been issued.
27. Reopener
The permit shall be modified or,alternatively,revoked and reissued to comply with any applicable
effluent standard or limitation for the control of any pollutant shown to contribute to toxicity of the
WWTP effluent or any pollutant that is otherwise limited by the POTW discharge permit. The
permit as modified or reissued under this paragraph may also contain any other requirements of
State or Federal pretreatment regulations then applicable.
28. Categorical Reopener
This permit shall be modified,or alternatively,revoked and reissued,to comply with any applicable
effluent standard or limitation issued or approved under Sections 302(b)(2)(C)and(D),304(b)(2),
and 307(a)(2)of the Clean Water Act,if the effluent standard or limitation so issued or approved:
1.) contains different conditions or is otherwise more stringent than any effluent
limitation in this permit;or
2.) controls any pollutant not limited in this permit.
The permit as modified or reissued under this paragraph shall also contain any other requirements
of the Act then applicable.
29. General Prohibitive Standards
The permittee shall comply with the general prohibitive discharge standards in 40 CFR 403.5 (a)
and(b)of the Federal pretreatment regulations.
5

IUP Synopsis
30. Potential Problems
The permittee shall provide protection from accidental and slug discharges of prohibited materials
and other substances regulated by this permit. The permittee shall also notify the POTW
immediately of any changes at its facility affecting the potential for spills and other accidental
discharge, discharge of a non-routine, episodic nature, a non-customary batch discharge, or a slug
load as defined in the Sewer Use Ordinance.
Additionally, the permittee shall notify by telephone the Control Authority and/or Municipality
immediately of all discharges that could cause problems to the POTW including any slug loadings
as defined in the Sewer Use Ordinance. If the permittee experiences such a discharge,they shall
inform the Control Authority and/or Municipality immediately upon the first awareness of the
commencement of the discharge. Notification shall include location of the discharge,type of waste,
concentration and volume if known and corrective actions taken by the permittee. A written follow-
up report thereof shall be filed by the permittee within five(5)days,unless waived by the Control
Authority and/or Municipality.
Industrial User Pretreatment Permit (IUP)
PART III
Special Conditions
1. Slug/Spill Control Measures:
Continue to implement POTW approved Slug/Spill Control Plan. (see table)
In addition to the requirements in Part II, 30, the Permittee shall complete
installation and/or commence implementation, operation, and/or maintenance of
the following specific protection Measures, Activities, Plans. Etc. (Items without
specific completion dates, or marked as "Continuous." must be performed for the
entire duration of the permit):
6

IUP Synopsis
Required
Completion/
Implementation
Description of Measure, Activity, Plan, etc. Date
Engineered Controls has submitted an updated Slug/Spill
control plan to the City of Conover Submitted
The permittee shall provide updates to the Control Authority as required by Part II,
30, of this IUP. Modifications to the measures shall be approved by the Control
Authority prior to installation/implementation. If a measure fails, the Control
Authority shall be notified within 24 hours.
2. Sludge Management Plan
Ninety days prior to the initial disposal of sludge generated by any pretreatment
facility, the permittee shall submit a sludge management plan to the Control
Authority.
Industrial User Pretreatment Permit (IUP)
PART III
Special Conditions
3. Flow Measurement Requirements
The permittee shall maintain appropriate discharge flow measurement devices and
methods consistent with approved scientific practices to ensure the accuracy and
reliability of measurements of the volume of monitored discharges. Devices
installed shall be a continuous recording flow meter capable of measuring flows
with a maximum deviation of less than 10% from true discharge rates throughout
the range of expected discharge volumes. The devices shall be installed,calibrated,
and maintained to ensure accuracy. At the time of issuance of the permit, this
method consists of a dedicated discharge flow meter. The meter shall be calibrated
every once (1 x)every year. Modifications to the flow metering equipment shall be
approved by the Control Authority prior to installation. If a required flow
measurement device fails,the Control Authority shall be notified within 24 hours.
7

IUP Synopsis
4. Certified Laboratory Analysis
Pollutant analysis shall be performed by a North Carolina Division of Water
Quality Certified Laboratory that is certified in the analysis of the pollutant in
wastewater.
5. 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 pretreatment plant operator in responsible charge
(ORC) of the wastewater treatment facilities. Such operator must hold a
certification of the type and 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 backup 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 the wastewater facility as required; 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. The
permittee shall submit a letter designating the operator in responsible charge to the
Certification Commission or their designee within thirty days after facility
classification.
_ Industrial User Pretreatment Permit (IUP)
PART III
Special Conditions
6. Total Toxic Organics (TTO) Definition
"TTO", or Total Toxic Organics, is the sum of the concentrations of the toxic
organic compounds listed in 40 CFR that are found in the permittee's process
discharge at a concentration greater than 0.01 mg/l.
8

IUP Synopsis
7. Total Toxic Organics (TTO) Certification
In lieu of monitoring for TTO, the permittee may, upon submitting to the Control
Authority one sample showing TTO compliance and a toxic organic management
plan, make the following certification every six months:
"Based upon my inquiry of the person or persons directly responsible for managing
compliance with the permit limitation for total toxic organics (TTO), I certify
that, to the best of my knowledge, no dumping of concentrated toxic organics
into the wastewaters has occurred since filing of the last monitoring report. I
further certify that this facility is implementing the toxic organic management
plan submitted to the Control Authority."
At a minimum,the certification statements are due by June 30 of each year covering
the January through June six month period, and December 7 of each year covering
the July through December six month reporting period. If the certification is not
submitted for both periods within 7 days of the respective due dates, the Control
Authority shall collect TTO samples before December 31 and the permittee will be
billed for the cost of the TTO sampling and/or analysis.
8. Toxic Organic Management Plan
Within ninety days of the issuance of this permit, the permittee shall develop and
submit to the Control Authority a toxic organic management plan.
9. Additional Monitoring Conditions
All monthly monitoring shall be conducted the first week of each month or as soon
in the month as process water is discharged. Quarterly monitoring shall be
conducted no later than the second month of each quarter.
Duty
10 ty to Maintain
It is the obligation of the permittee to maintain all equipment necessary to meet
permit requirements. Spare parts inventory shall be kept to insure timely repairs.
Upon the discovery of equipment failure, that could lead to permit violation, all
discharge shall cease until repairs are completed.
9

IUP Synopsis
IUP Basic Information
Receiving POTW name: POTW NPDES#:
Clark Creek Regional WWTP Newton NC0036196
IUP name: IUP Number:
Engineered Controls International,Inc. 101J
IUP Effective date: Pipe Numbers,list all regulated pipes:
05/12/2023 001
IUP expiration date: IUP 40 CFR#,if applicable:
05/12/2028 433.17
A. IUP Survey&Application form
Attach a completed copy of the Industrial User Wastewater Survey&
Application Form(see appendix 6-A)
B. IU Inspection form
Attach a copy of an Industrial User Inspection Form(see chapter 7) completed
by the Control Authority within the past 12 months.
C. RATIONALE FOR LIMITATIONS:
As listed on the IUP Limits Page(s), PART I, Section F of the IUP.
All parameter limits are calculated to protect the POTW from
pass through and inhibition and to allow the beneficial use of
biosolids generated by the WWTP.
These limits do not result in over allocation of the POTW's
treatment capacity.
Limits are achievable with standard technology.
10

Sewer Slug/Spill Control Plan
Sludge Control Plan RECEIVED
DEC 2 9 2023
For NCDEQ/DWRINPDES
Engineered Controls International
911 Industrial Drive SW
Conover NC 28613
Engineered Controls International, LLC (ECI) is in the business of
manufacturing regulators for the LP gas industry. As a part of the
manufacturing process, ECI uses a variety of chemicals in the
cleaning and finishing operations.
A captive wastewater pretreatment system is used to remove
prohibited materials from the cleaning and finishing operations
wastewater before it goes to sewer. The treated wastewater is
permitted to be discharged to the sewer by The City of Conover per
IUP #101J.
This plan shall serve as official policy and guidance on the
management of chemicals and other prohibited substances and
provide procedures for spill control.
Revised 2023
Tammy Isaacs
EHS Manager

Operations Using Prohibited Chemicals
All operations within the company shall be reviewed for the presence of sewer prohibited
chemicals. All chemicals shall be used in the designated areas and for the designated
processes only. Deviation from the designated use of any chemical shall be with the
approval of the ECI Environmental Coordinator only.
The following operations use, consume or produce prohibited substances.
(1) Machining of Zinc alloy regulator bodies and bonnets
(A) Xtreme Cut 231 (machining lubricant)
(2) Electrostatic spray paint of regulators
(A) Water based paint, Colors are Blue, Gray, Red, Fawn or Beige
(Contains 11-14% 2-Butoxyethanol and 3-17% Titanium Dioxide)
(B) Paint Thinner TS-2-0299 (for cleaning paint spray equipment)
(C) Hazardous Waste Flammable (from spray equipment cleaning with
thinner)
(D) Waste paint Non-Hazardous (from flushing spray equipment with water)
(3) Vibratory finishing of regulator bodies
(A) Madison BC-A burnishing compound (Biodegradable surfactants)
(B) Dissolved metals (zinc) in wastewater
(4) Chromate conversion of regulator bodies and bonnets, Chemicals used:
(A) Madison compound AC-L Soak cleaner (Biodegradable surfactants)
(B) Madison compound DX 1100 Etch Solution (Biodegradable surfactants)
(C) Dart 169 Plus Chromate Solution
(D) Dissolved metals Zinc and Chromium in wastewater
(5) Wastewater Pretreatment
(A) Sodium Hydroxide
(B) Sulfuric Acid
(C) Hazardous waste (Filters) containing Chromium
(6) Maintenance of equipment
(A) Mobile DTE 24 hydraulic oil
(B) Mobile DTE 25 hydraulic oil

Chemical Control and Storage
All chemicals used in the above-named operations shall be stored as follows.
(1) Xtreme Cut 231 shall be purchased in a 330-gallon tote and stored along the
east wall near entrance to waste water treatment area. Drips pads/container
shall be used under spout of the container.
(2) Water based Paint shall be purchased in 5-gallon pails and stored in
the guttered and diked wastewater treatment area on pallet racks. The
storage area is labeled to segregate paint by color. The storage area will
hold a maximum of 80 pails of paint, Paint shall be ordered in limited
quantities to avoid overfilling the storage area.
(3) Vibratory finishing compound Madison BC-A shall be ordered in 55-gallon
drums. It shall be ordered in 2 drums lots when the last drum is app half
empty. Full drums shall be stored inside the containment area of Chromate
Conversion with only the drum in-use placed at the vibratory machine.
(4) Sodium Hydroxide shall be stored in 55-gallon plastic drums in the guttered
and diked wastewater pretreatment area. Sodium Hydroxide purchases shall
be limited to one drum lots.
(5) Sulfuric Acid shall be stored in 55-gallon plastic drums in the guttered and
diked wastewater pretreatment area. Sulfuric acid shall be purchased in one
drum lots.
(6) Madison Compound AC-L shall be purchased in lots of (3-4) 55-gallon drums
and stored inside of the guttered and diked Chromate conversion area.
(7) Madison Compound DX 1100 shall be stored in 55-gallon drums inside of the
guttered and diked Chromate conversion area. Compound DX 1100 shall be
purchased in lots of(3-4) 55-gallon drums.
(8) Madison Dart 169 Plus shall be stored in a 275-gallon IBC inside of the
guttered and diked Chromate conversion area. Dart 169 Plus shall be
purchased in single container lots.
(9) Mobile DTE 24 and DTE 25 hydraulic oils shall be stored in 55-gallon metal
drums along the east wall near the entrance to the wastewater treatment
area. The drums shall be stored on containment pallets.
(10) Paint Thinner TS-2-0299 shall be purchased in 1-gallon containers and
stored in flammables cabinets in the maintenance area and/or paint area.
(11) Hazardous Waste Filters containing Chromium shall be accumulated in the
wastewater treatment area and stored in plastic 55-gallon drums. The
drums shall remain closed at all times other than when adding waste.
The filled drums of Hazardous waste shall be stored on the receiving dock in
an area labeled "Hazardous Waste Storage."

(12) Used paint thinner and paint mixture shall be accumulated as Hazardous
Waste in metal 5-gallon pails and stored on containment pallets on the
receiving dock in the Hazardous Waste Storage area.
(13) Wastewater from the vibratory finishing process contains zinc and shall be
prohibited from going to the city sewer or to the ECI's wastewater treatment
system. This wastewater is pumped to a labeled holding tank inside of the
wastewater treatment area and shall be pick up by an outside vendor as
non-hazardous wastewater destined for wastewater treatment.
(14) Used coolant Xtreme Cut 231and water mix shall be stored in a labeled
holding tank in the wastewater treatment area and shall be sent to an
outside vendor for wastewater treatment. Although this mixture is non-
hazardous, it is prohibited from entering the sewer because it contains zinc.
(15) Used oil from maintenance or other sources shall be collected in 55-gallon
metal drums and stored along the east wall near wastewater treatment
room. The drums shall be labeled "USED OIL" and kept closed at all times
other than when adding oil to the drum.
Disposal Control of Sewer Prohibited Substances
The following chemicals are present at ECI and are prohibited from entering the sewer.
These chemicals shall not be introduced directly into the sewer system by pouring into
sinks, commodes, or floor drains.
All unused, obsolete, out of date, unknown or otherwise discarded chemicals are
prohibited from entering the sewer or the wastewater treatment system. These
chemicals shall be reported to the Environmental Coordinator for evaluation of disposal
method.
(A) Compound AC-L (Soak Cleaner)
(B) Compound DX 1100 (Etch Solution)
(C) Dart 169 Plus (Chromate solution)
(D) Gasoline
(E) Hydraulic Oil
(F) Madison BC-A (Vibratory Solution)
(G) Mobile DTE 24, (Hydraulic Oil)
(H) Mobile DTE 25 (Hydraulic Oil)
(I) Paint
(J) Paint and water waste mixture
(K) Sodium Hydroxide (wastewater treatment)
(L) Sulfuric Acid (wastewater treatment)
(M) Thinner TS-2-0229
(N) Untreated Waste waters containing dissolved Metals (chromium, zinc,)
(0) Used oil.
(P) Waste Coolant
(Q) Hazardous Waste containing Chromium.
(R) Flammable Hazardous waste

•
Engineered Controls International has in place within the Chromate Conversion area, a
wastewater collection system consisting of trenches, dikes, and a containment pit. The
floor, trenches and raised curbs around this area are epoxy coated for chemical
resistance. This system is designed to contain all process wastewaters and any spill of
chemicals within the chemical process area. All hazardous chemicals used in this area
are stored within the diked and trenched areas.
Overflow from the rinse tanks are directed into a pit inside of the of the curbed area via
pvc pipes. Trenches are constructed around the chemical process tanks to direct all
spills and wash-down water into the pit.
The wastewater shall be pumped from the below ground pit to the pretreatment system.
The wastewater pretreatment system shall operate automatically. The influent pump
shall be controlled by limit switches in the collection pit. When the pit has sufficient water
levels the pump shall start and send raw wastewater thru the pretreatment system. The
treated clean water from the wastewater pretreatment system flows to the city sewer
system.
The pretreatment system operator shall monitor the quality of water using handheld pH
meter and Hach Chromium and Zinc analysis kits at least 2 times per shift.
If the pretreatment system effluent analysis shows pH, chromium, zinc or clarity levels
outside of Permit limits the system shall be immediately shut down and analyzed for
cause of problem. No effluent shall be allowed to go to sewer if the dissolved metals
readings are outside of permit limits.
The wastewater pretreatment system is in a room separated from the manufacturing
facility by a wall and is at a lower level than the general facility. This room has a system
of epoxy lined trenches and a pit to contain any spills. Spills shall be pumped from the
below ground level, epoxy lined pit via automatic pumps to the wastewater pretreatment
equalization tank.
Sludge Control Plan
The sludge generated at ECI's wastewater pretreatment system shall be collected in 1-
cubic yard polyethylene bags and labeled "F006 Hazardous Waste". It shall be stored in
the Hazardous Waste Storage area until shipment to an EPA approved Hazardous
Waste Treatment/storage facility. Sludge collected from the dip tanks shall be placed in
55-gallon plastic drums and labeled "D002/D008 Waste corrosive liquid acidic inorganic".
This waste shall also be stored in the Hazardous waste storage area. It is strictly
forbidden for any hazardous waste to be disposed of other than in the approved, labeled
hazardous waste containers. All Hazardous Waste shall be shipped to an EPA approved
Hazardous Waste Treatment/Storage facility. A Uniform Hazardous Waste Manifest shall
accompany all hazardous waste shipments.
Wastewater from the vibratory finishing process contains zinc and shall be prohibited
from going to the city sewer or to the ECI's wastewater treatment system. This
wastewater shall be pumped to a labeled holding tank inside of the wastewater
treatment area and shall be pick up by an outside vendor as non-hazardous wastewater
destined for wastewater treatment.

Used coolant Xtreme Cut 231 and water mix shall be stored in a labeled holding tank in
the wastewater treatment area and shall be sent to an outside vendor for wastewater
treatment. Although this mixture is non-hazardous, it is prohibited from entering the
sewer because it contains zinc in higher concentration than is permitted to enter sewer.
Paint waste from flushing the spray paint equipment with water shall be collected in 55-
gallon steel drums, labeled "Waste Paint non-regulated" and stored on containment
pallets on the east receiving dock area until shipment to a treatment facility. No paint
waste shall be put into the sewer or the wastewater pretreatment system.
ECI shall maintain a supply of spill pillows, spill neutralizers, and clean-up tools that shall
be readily available in the event of spills outside of the diked storage areas. These
supplies shall be stored in a yellow over-pack drum inside of the east wall near the
receiving area.
Employee Training
All ECI employees who handle and/or use any hazardous chemical shall be given
annual chemical training. Training topics shall consist of:
(A) Identification of Chemicals, Labels, MSDS
(B) Processes where chemicals are used.
(C) Hazards of chemicals (SDS)
(D) Proper handling of chemicals (PPE)
(E) Disposal of chemicals
(F) Hazardous Waste handling rules
(G) Storage of chemicals and Hazardous waste
(H) Spill control and countermeasures
(I) Notification for spills
Notification of Slug Discharge
The City of Conover requires immediate notification if any prohibited substance or
unusually large volume of regulated material is introduced into the sewer on the
premises of ECI.
The following persons shall be notified by phone with a description of the discharge,
including name of chemical or pollutant, amount of pollutant, time of discharge and
duration of discharge.
Conover Wastewater Treatment [phone]
Pretreatment Coordinator, Andrew Evans [phone]
A written follow-up report shall be filed within 5 days and sent to:
Andrew Evans
Wastewater Treatment
City of Conover
P.O. Box 549
Burlington, NC 27216-1358

♦J . -
Any violation of this policy will warrant disciplinary action, which could
include termination.
THE BASIS STEPS IN MANUFACTURING REGULATION AT ENGINEERED CONTROLS
INTERNATIONAL
911 Industrial Dr SW, Conover, NC
Receive Machine Vibratory Chromate Assembly Regulators Paint Pack and
Zinc * finish . conversion* using chromated casting * Regulators ship
Zinc Castings regulator coat and received components * regulators
Castings bodies castings
Receive A t
components
♦ • 4
Load Hot CF Deox clean CF Chromate CF H H Unload
racks Alkaline conversion 0 0 racks
Cleaner C C C T T
165° 0 o
0 R AIR
Compound LD Compound LD Dart 169 Plus L I
AC-95L DX-1100 D N D
R R R S R
I I I E Y
N N N
S S S 110°
E E E
VENT VENT VENT VENT VENT
1 1 1 • Ir 1 1
TO WASTE
TREATMENT

• . _-a
Wastewater pretreatment system receives rinse waters and bath dumps from the Chromate
conversion process.
Wastewater is pumped through activated carbon for removal of organics, and through Ion exchange
columns to remove chromium and zinc. The wastewater goes to a final pH adjust tank for adjustment
to 6-10 units' pH before it is pumped to sewer.

Industrial User Wastewater SurveyRECEIVED
& Permit Application
COVER PAGE DEC 2 9 2023
Company Name:Engineered Controls International,Inc.
NCDEQ/DWR/NPDES
Name of responsible person on site at the facility authorized to represent the Name of alternative on site person farnitiar with the day-to-day operations,
company in official dealings with the Sewer Authority and/or the City. environmental permitting requirements,monitoring,record keeping,and data
management.
Tamm Isaacs Michael Shepherd
Title:Clean Energy Solutions EIS Manager Years with firm:4 mos. Title:Site EIS Rep Years with firm
Phone#[phone] Fax# Phone# Fax#
Physical street address of facility: Official mailing address,if different. Note if same.
911 Industrial Dr Same
City:Conover State:NC Zip:28e13 City State Zip
The information provided by you on this questionnaire serves two functions:
1. The information is used to determine if your facility needs an Industrial
User Pretreatment Permit(IUP)for the discharge of wastewater to the local
sewer.
2. If an Industrial User Pretreatment Permit (IUP) is required, this survey
serves as the application for an Industrial User Pretreatment Permit(IUP).
Requests for confidential treatment of information provided on this form shall be governed by procedures
specified in 40 CFR Part 2. In accordance with Title 40 of the Code of Federal Regulations Part 403,
Section 403.14 and the Local Sewer Use Ordinance (SUO), information and data provided in this
questionnaire which identifies the content, volume and frequency of discharge shall be available to the
public without restriction.
This is to be signed by an authorized official of your firm,as defined in the Local Sewer Use Ordinance or the NC Model
Sewer Use Ordinance,Section 1.2,after completion of this form.
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 upon 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
informatio , including the possibility of fine and/or imprisonment for knowing violations.
=-- 2/2/ .23
Sign re of Authorized Representative Date
ted above (seal if aj,plicable)
Title: IU Wastewater Survey & Permit Application
File name: C:\Users\tisaacs\Desktop\Industrial Wastewater Survey&IUP Permit Application(Long Form) (1).docx
Revision date: 12/30/97 Page 1 of 198

•
Industrial User Wastewater Survey
& Permit Application
1. Provide a brief narrative description of the type of business, manufacturing
processes, or service activities your firm conducts at this site.
Manufacturing of LP Gas regulators,which includes machining,chromate conversion,
assembly,testing, painting,packing and shipping.
2. List the primary products produced at this facility:
1. All components are received,
2. Castings are machined to specs
3. Castings are put through chromate conversion process
4. Parts are assembled into regulator
5. Regulator is tested
6. Regulator is painted
7. Regulator is packed
8. Regulator is shipped
3. List raw materials and process additives used:
• Raw Materials — Zinc castings, brass components, rubber bladders, plastic
components, aluminum components, metal springs (steel), metal screws (steel),
Paint(water based)
• Additives — AC-95L (soap), DX-1100 (soap), Duracoat 1237 (Hexavalent Chromium),
GX Cool 3990 MM (machining fluid), BC-610A(vibratory compound)
4. Are biocides added to any water discharged to the POTW,
if yes describe:
Yes
No x
5. Describe weekly production schedule, including shifts worked per day,
employees per shift, and primary operation during shift.
Office/Administrative Staff
Monday_ Tuesday Wednesday Thursday Friday Saturday Sunday
#Employees 6 6 6 6 6
Start/End Time 7:30 AM 7:30 AM 7:30 AM 7:30 AM 7:30 AM
4:00 PM 4:00 PM 4:00 PM 4:00 PM 4:00 PM
Production Staff
Monday Tuesday Wednesday Thursday Friday Saturday Sunday
1st Shift #Employees 35 35 35 35 35
Start Time 7:30 AM 7:30 AM 7:30 AM 7:30 AM 7:30AM
End Time 4:00 PM 4:00 PM 4:00 PM 4:00 PM 4:00PM
2nd Shift #Empioyees 15 15 15 15 15
Start Time 4:00 PM 4:00 PM 4:00 PM 4:00 PM 4:00PM
End Time 1230AM 12:30AM 12:30AM 12:30AM 12:30AM
3rd Shift #Employees
Start Time
End Time
Title: [U Wastewater Survey & Permit Application
Filename: CAUsers\tisaacs\Desktop\Industrial Wastewater Survey&IUP Permit Application(Long Form)(1).docx
Revision date: 12/30/97 Page 2 of 198

•
Industrial User Wastewater Survey
& Permit Application
6. Production process is: Check, if all continuous X
Check,if all batch
If both please enter, %continuous= % %Batch=
7. Does production vary significantly(+-20 %)by season. Describe.
Yes X
No
The"busy season"would be from February through July.These
months are when we are attempting to produce at our highest
level = 6,000 units per day.
August through January is our"slow season"where we are
building inventory and smaller orders and we are at a normal
production pace of= 2,500 units per day.
8. Are any significant (+- 20 %) changes in production that will affect wastewater
discharge expected in the next 5 years. If yes,please describe.
Yes
No X
9. List all current waste haulers. Give name, address, phone numbers, volume and
materials hauled off.
• ProChem
o Brody Edwards
O 5100 Enterprise Dr
Elliston,VA 24087
O 800-290-2295
O Ionic Columns -Spent
o 20,000 gall bi-weekly
10. Attach a copy of laboratory analyses performed in the last year on the wastewater
discharge(s) from your facilities. Summarize data on the attached Data Summary
Form.
See attached
Title: 1U Wastewater Survey & Permit Application
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Revision date: 12/30/97 Page 3 of 198

Industrial User Wastewater Survey
& Permit Application
11. Attach sketch or schematic showing sampling points and all connections to the sewer.
Engineered Controls International
911 Industrial Drive SW
Conover NC 28613 S
F
>(
SITE PLAWLAYOUT
71,959 S.F. k'
. N
RIttRI j t ,Fes
RV t �� 1 '...IER
r. . ; ' — 1 iI 4.
i l 0i
. , 1 RI
"cam«!1 •uv.rara: ,..., •t''_ l 6
} 0 i
I I WILK CD. €
1 ti 0
...19 1 i , r_i 1
I ,
I XY; = 01
i i---- (Office)
H ,1
3
i D3KESTIC VATER Li(E, 3' 1-1 vwvt P"w"
I :+
p np ICM.rr 1
� v� iRcwn
1116 A SPR3NKLER LtNE, 8'
7
�� MCc r CS.tT c
j T
3` i CIT arc
INDUSTRIAL CR.' S.W. I W`
t, ,:G.t•1.1-
_ —� .
t
Title: IU Wastewater Survey & Permit Application
File name: C:\Users\tisaacs\Desktop\Industrial Wastewater Survey&IUP Permit Application(Long Form) (1).docx
Revision date: 12/30/97 Page 4 of 198

Industrial User Wastewater Survey
& Permit Application
12. Complete the Wastewater Pollutants Checklist attached to this Survey.
See attached
13. Do you have,or have you ever applied for,been issued,or been denied an
NPDES permit to discharge to the surface waters or storm sewers of North
Carolina? If yes,list all other NPDES permits,permit numbers,dates,and
names used to apply for them,or reason denied.
If yes: Permit,#,date,applicant name
Yes
If yes: Permit,#,date,applicant name X
No
14. Do you have, or have you ever applied for or been issued an Industrial
User Pretreatment Permit (IUP) to discharge wastewater to the sewer
collection system. If yes,list all other IUP permits,permit numbers,dates,
and names used to apply for them.
If yes: Permit,#,date,applicant name IUP/ 101 J/City of Conover Yes X
If yes: Permit,#,date,applicant name
No
15. Do you have, or have you ever applied for or been issued any other
Environmental Permits (for example; air, RCRA, groundwater,
stormwater,general,Non-Discharge,septic tank,etc.). If yes,list all other
permits, permit numbers,dates, and names used to apply for them.
If yes: Permit type,#,date,applicant name N/A Yes
If yes: Permit type,#,date,applicant name X
No
If yes: Permit type,#,date,applicant name
16. Is a Spill Prevention Control and Countermeasure(SPCC)Plan prepared
for this facility?
Yes X
No
17. Is a Spill /Slug Control Plan required by the POTW, prepared for this
facility?
Yes X
No
Title: IU Wastewater Survey & Permit Application
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Revision date: 12/30/97 Page 5 of 198

Industrial User Wastewater Survey
& Permit Application
18. Do you have any underground storage tanks at your facility? If yes, list
contents and volume of each tank.
Yes
No X
19. Do you have any above ground storage tanks at your facility? If yes, for
each tank, list the contents, volume, whether the tank has any spill
prevention or containment devices, such as dikes, and procedures for
draining any containment devices.
Yes X #of Tanks
No
Associated with
0 . 0 3 [P]rocess;
> ° [W]astewater
e .2, ,o m i Volume treatment; Spill
yO a .0 (in [G]roundwater Containment
Tank ID gallons) Contents remediation; Devices
Equalization I A 3,000 Wastewater W Yes
X2 Accumulation Vibratory
1 A 1,500 Water P Yes
Initial pH A 700 Wastewater W Yes
Adjustment. —........_
Final pH A 700 Wastewater W Yes
Adjustment
Title: IU Wastewater Survey & Permit Application
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Revision date: 12/30/97 Page 6 of 198

Industrial User Wastewater Survey & Permit Application
PART II, Water Supply, Use, & Disposal Worksheet:
Water Used for: Water Avg. Max. M E Disposal Avg. Max. M ' E
gal/day gal/day e st gal/day gal/day e st
Source(s) a i Method(s) a i
s m s m
u at u at
re e re e
d d d d
(see Source List below) (see Disposal List below)
1. Process water City Water 3000 6000 X (9)
2. Washdown water City Water 300 500 X (9)
3. Water into product
4. Air Quality Permitted units
5. Domestic-toilets,drinking, cafe City Water 500 1000 X (2)
6. Cooling water,Process NON-Contact City Water 20 100 X (9)
7. Boiler/Cooling tower blowdown
8. Cooling water,HVAC
9. Other:
Totals=> 3820 7600 Totals=>
Typical Water Sources: Possible Water Disposal Methods
1. City/Public supply 1. Sanitary sewer,with pretreatment
2. Private wells,drinking 2. Sanitary sewer,without pretreatment
3. Groundwater remediation wells 3. Storm sewer
4. Private ponds 4. Surface waters of NC
5. Surface waters of NC,please identify 5. Evaporation
6. Include others if applicable 6. Land applied
7. To groundwater
8. Septic Tank
9. Waste Haulers(identify)
10. Water into Product
11. Include others,if applicable
Title: IU Wastewater Survey & Permit Application
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Revision date: 12/30/97 Page 7 of 198

PART III, PRETREATMENT FACILITIES:
Are there any pretreatment devices or processes used for treating wastewater
before being discharged to the sewer? Check all that are present, and describe.
No pretreatment facilities=>
1. Flow equalization Aerated equalization=> Y
NON-Aerated equalization
=>
Total volume of equalization (million gal.)=> 700
2. Activated Carbon Yes X No Describe any,if present.
3. Activated Sludge Yes No X
4. Air Stripping Yes No X
5. Centrifugation Yes No X
6. Chemical Precipitation Yes No X
7. Chlorination Yes No X
8. Cyanide Destruction Yes No X
9. Cyclone Yes No X ,
10. Dissolved Air Floatation Yes No X
11. Filtration Yes No X
12. Flocculation Yes No X
13. Grease Trap Yes No X
14. Grit Removal Yes No X
15. Ion Exchange Yes X No Carbon,Anion,Cation
16. Neutralize,pH adjust Yes X No Caustic soda, Sulfuric Acid
17. Other Biological Treatment Yes No X
18. Ozonation Yes No X
19. Reverse Osmosis Yes No X
20. Screening Yes No X
21. Sedimentation Yes No X
22. Septic Tank Yes No X
23. Silver Recovery Yes No X
24. Solvent Separation Yes No X
25. Spill protection Yes X No
List any others.
Title: lU Wastewater Survey & Permit Application
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Revision date: 12/30/97 Page 8 of 198

PART IV, CATEGORICAL INFORMATION:
1. When were operations started at this facility Facility start up date 1997
2. List all Standard Industrial Classification(SIC) codes for your facility.
These may be found on State Unemployment forms,tax forms,
accounting records,or from the Chamber of Commerce.
3491
3. Has this facility ever been considered a Categorical Industrial User
(CIU)as described by the Code of Federal Regulations(40 CFR)?
If yes,give complete 40 CFR number=> 433.17
No
4. Are any other facilities owned and/or operated by your company
permitted as Categorical Industrial Users(CIUs) as described by the
Code of Federal Regulations (40 CFR)?
If yes please give name(s), location, and 40 CFR number. Yes
No X
Title: IU Wastewater Survey & Permit Application
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Revision date: 12/30/97 Page 9 of 198

PART IV, CATEGORICAL INFORMATION:
(continued)
5. Check any activities listed below that are performed at your facility:
Check 40 Industrial Activity Check 40 Industrial Activity
below CFR# below CFR#
467 Aluminum Forming 432 Meat products
427 Asbestos Manufacturing X 433 Metal finishing
461 Battery Manufacturing 464 Metal molding and casting
431 Builders paper&board mills 436 Mineral mining and processing
407 Canned&preserved fruits&veg. 471 Nonferrous Metal,Form&Powders
408 Canned&preserved seafood 421 Nonferrous Metals Manufacturing
458 Carbon black Manufacturing 414 OCPSF,Organic Chemicals,Plastics,
411 Cement Manufacturing &Synthetic Fiber Manufacturing
437 Centralized Waste Treatment 435 Oil&gas extraction
434 Coal Mining 440 Ore mining and dressing
465 Coil Coating 446 Paint formulating
468 Copper Forming 443 Paving and roofing materials Mfg.
405 Dairy products processing 455 Pesticide Manufacturing
469 Electrical,electronic components 419 Petroleum Refining
413 Electroplating 439 Pharmaceutical Manufacturing
457 Explosives Manufacturing 422 Phosphate Manufacturing
412 Feedlots 459 Photographic supplies
424 Ferro allay Manufacturing 463 Plastics molding and forming
418 Fertilizer Manufacturing 466 Porcelain enameling
464 Foundries,Metal Mold&Casting 430 Pulp,paper,and paperboard
426 Glass Manufacturing 428 Rubber Manufacturing
406 Grain mills 417 Soap&Detergent Manufacturing
454 Gum&Wood Chemicals Mfg. 423 Steam Electric power Generation
460 Hospitals 409 Sugar processing
447 Ink formulating 410 Textile Mills
415 Inorganic chemical Manufacturing 429 Timber products processing
420 Iron&Steel Manufacturing 442 Transportation Equipment Cleaning
425 Leather Tanning&Finishing Others
Title: IU Wastewater Survey & Permit Application
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Revision date: 12/30/97 Page 10 of 198

Wastewater Pollutant Checklist
Chemical Name EPA Check if Check if Check if Check if Concentration
Storet Present at Absent at Present in Absent in in Discharge,
Code Facility Facility Discharge Discharge if Known
(mg/1)
Acid Extractable Organics
2-Chloronhenol 34586 X X
2,4-Dichloronhenol 34601 X X
2,4-Dimethy'lnhenol 34606 X X'
2,4-Dinitronhenol 34616 X X
2-Methv1-4,6-dlnitrophenol 34657 X
4-Chloro-3-methvinhenol 34452 X. X
2-Nitronhenol 34591 X X
4-Nitrophenol 34646 X X
Pentachloronhenol 39032 X. X
Phenol 34694 X X
2,4,6-Trichlorophenol 34621 X X
Base Neutral Organics
1,2.4-Trichlorobenzene 34551 X. X
1,2-Dichlorobenzene 34536 X X
1,2-Dinhenvillvdrazine 34346 X X
1,3-Dichlorobenzene 34566 X X
1,4-Dichlorobenzene 34571 _ X X
2,4-Dinitrotoluene 34611 Xr X
2,6-Dinitrotoluene 34626 X X
2-Chloronaphthalene 34581 X X
3,3-Dichlorobenzidine 34631 X X
4-Bromophenyl phenyl ether 34636 X X
4-Chlorophenyl phenyl ether 34641 X X
Acenaphthene 03405 X X
Acenaphthylene 34200 X X
Anthracene 34220 X X
Benzidine 39120 X X
Benzo(a)anthracene _ 34526 X X
Benzo(a)pyrene 34247 X X
Benzo(b)fluoranthene 34230 X X
Benzo(ghi)perylene 34521 X X
Benzo(k)fluoranthene 34242 X X
Bis(2-chloroethoxy)methane 34278 + X X
Bis(2-chloroethyl)ether 34273 X X
Bis(2-chloroisopropyl)ether 34283 X X
Bis(2-ethylhexyl)phthalate 39100 X X
Butyl benzyl phthalate 34292 _ X X
Chrysene 34320 r X X
Di-n-butyl phthalate 39110 X X
Title: IU Wastewater Survey & Permit Application
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Wastewater Pollutant Checklist
Chemical Name EPA Check if Check if Check if Check if Concentration
Storet Present at Absent at Present in Absent in in Discharge,
Code Facility Facility Discharge Discharge if Known
(mgi1)
Base Neutral Organics (continued)
Di-n-octyl phthalate 34596 X X
Dibenzo(a,h) anthracene 34556 X X
Diethyl phthalate 34336 X X
Dimethyl phthalate 34341 X X
Fluoranthene 34376 X X
Fluorene 34381 - X X
Hexachlorobenzene 39700 X X
Hexachlorobutadiene 34391 X X
Hexachlorocyclopentadiene 34386 X X
Hexachloroethane 34396 X X
Indeno(1,2,3-cd) pyrene 34403 X X
Isophorone 34408 X X
N-nitroso-di-n-propylamine 34428 X X
N-nitrosodimethylamine 34438 X X
N-nitrosodiphenylamine 34433 X X
Naphthalene 34696 X X
Nitrobenzene 34447 X X
Phenanthrene 34461 X X
Pyrene 34469 X X
Metals
Aluminum 01104 X X
Antimony 01097 X X
Arsenic 01002 X X
Beryllium 01012 X X
Cadmium 01027 X X
Chromium 01034 X X
Copper 01042 X X
Lead 01051 X X
Mercury 71900 X X
Molybdenum 01062 X X
Nickel 01067 X X
Selenium 01147 X X
Silver 01077 X
Thalium 00982 X X
"
Zinc 01092 X X
Title: IU Wastewater Survey & Permit Application
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Revision date: 12/30/97 Page 12 of 198

i
Wastewater Pollutant Checklist
Chemical Name EPA Check if Check if Check if Check if Concentration
Storet Present at Absent at Present in Absent in in Discharge,
Code Facility Facility Discharge Discharge if Known
(mg/1)
Other Inorganics
Barium 01007 X X.
Chloride 00940 X X
Cyanide 00720 X X
Fluoride 00951 X X
Purgeable Volatile Organics
1,1,1-Trichloroethane 34506 XX
1,1,22-Tetrachloroethane 34516 X. X
1,1,2-Trichloroethane 34511 X X.
1,1-Dichloroethane 34496 X. X
1,1-Dichloroethylene 34501 X. X
'
1.2-Dichloroethane 34531 X.. X.
1.2-Dichloropropane 34541 X X
2-Chloroethvl vinyl ether 34576 X X
Acrolein 34210 X X
Acrvlonitrile 34215 X X
,Benzene 34030 X X
Bromodichloromethane 32101 X
Bromoform 32104 X X
Bromomethane 34413 X _W X
Carbon tetrachloride 32102 X X
Chlorobenzene 34301 X X
Chloroethane 34311 X X
Chloroform 32106 X
Chloromethane 34418 X. X
cis 1,3-Dichloropropene 34704 X X
Dibromochloromethane 32105 X<
Ethvlbenzene 34371 X. X
Methylene chloride 34423 X. X
Tetrachloroethylene 34475 X. X
Toluene 34010 X X
trans 1,3-Dichlorapropene 34699 X. X
trans-1,2-Dichloroethylene 34546 X X
Trichloroethvlene 39180 X. X
Trichlorofluoromethane 34488 X X
Vinyl chloride 39175 X X
Others
Xylene X X
Title: N Wastewater Survey & Permit Application
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Data Summary Form
X<= Receiving POTW
<= Receiving NPDES #
<= Specific Sample Location!
i.e., Give IU Name,IUP#, and/or pipe#
BOD TSS Ammonia
Lab=> Laboratory performing analysis =>
MDL=> Laboratory Method Detection Limits—>
Notes=> Notes—>
Q = Flow
Sample Date Notes about Sample M=Metered Conc. Results Conc. Results Conc. Results
ID, or Sample E=Estimated from Lab from Lab from Lab
Count Collected
mgd gal/day <? mg/1 <? mg/1 <? mg/1
1 1/25/20223 M
2
3
4
5
6
7
8
9
10
11
12
etc
TNS => Total number of samples=>
Max. value=> Maximum data value(mg/1)=>
Avg. (use 1/2 BDL)=> Avg. data value, Include BDL values as 1/2 detection limit=>
Title: IU Wastewater Survey & Permit Application
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Data Summary Form
<= Receiving POTW
<= Receiving NPDES #
<= Specific Sample Location!
i.e., Give IU Name, IUP#, and/or pipe#
Arsenic Copper Chromium Cadmium COD Copper
Lab =>
MDL=>
Notes=>
Sample Date Sample Conc. Results Conc. Results Conc. Results Conc. Results Conc. Results Cone. Results
ID or Collected from Lab from Lab from Lab from Lab from Lab from Lab
Count
<? mg/1 <? mg/1 <? mg/1 <? mg/1 <? mg/1 <? mg/1
1
2
3
4
5
6
7
8
9
10
11
12
etc
TNS =>
Max. Value=>
Avg. (use1/2 BDL) =>
Title: IU Wastewater Survey & Pennit Application
File name: C:\Users\tisaacs\Desktop\Indusfial Wastewater Survey&IUP Permit Application(Long Form) (1).docx
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Data Summary Form
<= Receiving POTW
<= Receiving NPDES #
<= Specific Sample Location!
i.e., Give 1U Name, IUP#, and/or pipe#
Cyanide Lead Mercury Nickel Silver Zinc
Lab =>
MDL=>
Notes=>
Sample Date Sample Conc. Results Conc. Results Conc. Results Conc. Results Conc. Results Conc. Results
ID or Collected from Lab from Lab from Lab from Lab from Lab from Lab
Count
<? mg/1 <? mg/1 <? mg/1 <? mg/1 <? mg/1 <? mg/1
l
2
3
4
5
6
7
8
9
10
11
12
etc
TNS =>
Max. Value=>
Avg. (usel/2 BDL)=>
Title: IU Wastewater Survey & Permit Application
File name: C:\Users\tisaacs\Desktop\Industrial Wastewater Survey&IUP Permit Application(Long Form) (1).docx
Revision date: 12/30/97 Page 16 of 198

Data Summary Form
<=Receiving POTW
<=Receiving NPDES #
<= Specific Sample Location!
i.e., Give IU Name, IUP#, and/or pipe#
Other Other Other Other Other Other
Lab=>
MDL=>
Notes=>
Sample Date Sample Conc. Results Conc. Results Conc. Results Conc.Results Conc. Results Conc. Results
ID or Collected from Lab from Lab from Lab from Lab from Lab from Lab
Count
<? mg/1 <? mg/1 <? mg/1 <? mg/1 <? mg/1 <? mg/1
1
2
3
4
5
6
7
8
9
10
11
12
etc
TNS=>
Max. Value=>
Avg. (use1/2 BDL) =>
Title: IU Wastewater Survey & Permit Application
File name: C:\Users\tisaacs\Desktop\Jndustrial Wastewater Survey&IUP Permit Application(Long Form) (1).docx
Revision date: 12/30/97 Page 17 of 198

Industrial User Wastewater Survey
& Permit Application
Part V, Waste Reduction Information :
State Pretreatment Rule 15A NCAC 2H.0916 (c)(l)(M) requires Significant Industrial
Users to include a description of current and projected waste reduction (pollution
prevention) activities. The codes listed are standard EPA codes found on Toxic Release
Inventory and other environmental forms. Please check all applicable codes for your
facility related to wastewater discharge.
Current Projected Code Description
X W13 Improved maintenance scheduling recordkeeping, or procedures
X W14 Changed production schedule to minimize equipment and feedstock
changeovers
W19 Other changes in operating practices(explain briefly in comments)
X W21 Instituted procedures to ensure that materials do not stay in inventory
beyond shelf-life
W22 Began to test outdated material-continue to use if still effective
W23 Eliminated shelf-life requirements for stable materials
X W24 Instituted better labeling procedures
X W25 Instituted clearinghouse to exchange materials that would otherwise
be discarded
W29 Other changes in Inventory control(explain briefly in comments)
X W31 Improved storage or stacking procedures
W32 Improved procedures for loading,unloading and transfer operations
X W33 Installed overflow alarms or automatic shutoff valves
X W34 Installed secondary containment
W35 Installed vapor recovery systems
X W36 Implemented inspection or monitoring program of potential spill or
leak sources
W39 Other spill and leak prevention(explain briefly in comments)
W41 Increased purity of raw materials
W42 Substituted raw materials
W49 Other raw material modifications(explain briefly in comments)
W51 Instituted recirculation within a process
Title: IU Wastewater Survey&Permit Application
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Revision date: 12130/97 Page 18 of 18

Industrial User Wastewater Survey
& Permit Application
Current Projected Code Description
W52 Modified equipment, layout,or piping
W53 Use of a different process catalyst
X W54 Instituted better controls on operating bulk containers to minimize
discarding of empty containers
X W55 Changed from small volume containers to bulk containers to
minimize discarding of empty containers
W58 Other process modifications (explain briefly in comments)
W59 Modified stripping/cleaning equipment
W60 Changed to mechanical stripping/cleaning devices (from solvents or
other materials)
W61 Changed to aqueous cleaners(from solvents or other materials)
X W62 Reduced the number of solvents used to make waste more amenable
to recycling
W63 Modified containment procedures for cleaning units
W64 Improved draining:procedures
W65 Redesigned parts racks to reduce dragout
W66 Modified or installed rinse systems
W67 Improved rinse equipment design
W68 Improved rinse equipment operation
W71 Other cleaning and degreasing operation(explain briefly in comments)
W72 Modified spray systems or equipment
X W73 Substituted coating materials used
X W74 Improved application techniques
W75 Changed from spray to other system
W78 Other surface preparation and finishing(explain briefly in comments)
W81 Changed product specifications
W82 Modified design or composition ofproduct
W83 Modified packaging
W89 Other product modifications (explain briefly in comments)
W99 Other(specify in comments )
Comments (Please list corresponding code)
Title: IU Wastewater Survey & Permit Application
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/��� ,,,,) Pm Anrdstla d Services.LLC
moo ow Ave. Sults 100
(ir11Q1yu11 ial Hununters„9e.NC 28078
inerpateblton
C704fe76.9092
February 01, 2023
Michael Shepherd
Engineered Controls
911 Industrial Drive SW
Conover, NC 28613
RE: Project: EOTP 1-25-23
Pace Project No.: 92648841
Dear Michael Shepherd:
Enclosed are the analytical results for sample(s)received by the laboratory on January 26,2023. The results relate only to
the samples Included in this report. Results reported herein conform to the applicable TNI/NELAC Standards and the
laboratory's Quality Manual,where applicable,unless otherwise noted in the body of the report.
The test results provided in this final report were generated by each of the following laboratories within the Pace Network:
•Pace Analytical Services-Asheville
•Pace Analytical Services-Peachtree Corners,GA
If you have any questions concerning this report,please feel free to contact me.
Sincerely,
Tyriek Hooks
[e-mail]
[phone]
Project Manager
Enclosures
cc: Jeff Main,Engineered Controls
Accounts Payable,Engineered Controls
REPORT OF LABORATORY ANALYSIS
0 This report shall not be reproduced,except In full,
without the written consent of Pace Analytical Services,LLC. Page 1 of 11

•
Pace Analytical Services,LLC
( eAr1aYficai
�,!_ HunteravNe,NC 28078
[phone]
CERTIFICATIONS
ProJact EOTP 1-25-23
Pace Project No,: 92648841
Pace Analytical Services Asheville
2225 Riverside Drive,Asheville,NC 28804 South Carolina Laboratory ID:99030
Florida/NELAP Certification#:E87648 South Carolina Certification#:99030001
North Carolina Drinking Water Certification#:37712 VirginlaNELAP Certification#:460222
North Carolina Wastewater Certification#:40
Pace Analytical Services Peachtree Comers
110 Technology Pkwy,Peachtree Corners,GA 30092 North Carolina Certification#:381
Florida DOH Certtiication#:E87315 South Carolina Certification#:98011001
Georgia OW inorganics Certification#:812
REPORT OF LABORATORY ANALYSIS
This report shell not be reproduced,except in full,
without the written consent of Pace Analytical Services,LLC. Page 2 Of 11

•
Pere Analytical Services.LLG
at�A„,�6�n,��e 9800 IGncey Ave.Suite 100
f11 kt(�/tka Huntersville,NC 28078
■>W.yedaEedon [phone]
SAMPLE ANALYTE COUNT
Project: EOTP 1-25-23
Peoe Project No.: 92548841
Analysts
Lab ID Sample ID Method Analysts Reported Laboratory
92848841001 EOTP 1-25-23 METALS EPA200.8 CW1 7 PASI-GA
92848841002 EOTP 145-23 CYANIDE SM 4500-CN-E-2016 ANM 1 PASI-A
PASI-A=Pam Analytical Services-Asheville
PASI-GA=Pace Analytical Services-Peachtree Corners,GA
REPORT OF LABORATORY ANALYSIS
Thie report shall not be reproduced,except In full.
without the written consent of Pace Analytical Sentces,LLC. Page 3 of 11

® Pees Analytical Services,LLC
9800 Kf Analytical
e. Suite 100
__Ate
f
HuMersvllla,NC 28078
[phone]
ANALYTICAL RESULTS
Project EOTP 1-25-23
Pace Project No.: 92648341
Sample: EOTP 1-25-23 METALS Lab ID: 92648841001 Collected: 01/25/23 15:00 Received: 01/26123 08:22 Matrix:Water
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Dual
200.8 ATL ICPMS Analytical Method:EPA200.8 Preparation Method:EPA 200.8 1
Pace Analytical Services-Peachtree Corners,GA
Cadmium ND ug/L 0.50 1 01/30/2310:30 01/30/2319:50 7440-43-9
Chromium 64.3 ug/L 5.0 1 01/30/23 10:30 01/30/2319:50 7440-47-3
Copper ND ugh. 5.0 1 01/30/73 10:30 01/3012319:50 7440-50-8
Lead ND ug/L 1.0 1 01/30/2310:30 01/30/2319:50 7439-92-1
Nickel ND ugh 5.0 1 01/30/2310:30 01/30/2319:50 7440-02-0
Silver ND ug/L 5.0 1 01/30/2310:30 01/30/23 19:50 7440-22-4
Zinc 61.0 ug/L 10.0 1 01/302310 0 01/30/23 19:50 7440-66-6
Sample: EOTP 1-25-23 CYANIDE Lab ID: 92648841002 Collected: 01/25/23 15:00 Received: 01/28/23 08:22 Matrix:Water
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Dual
4500CNE Cyanide,Total Analytical Method:SM 4500-CN-E-2016 Preparation Method:SM 4500-CN-E-2016
Pace Analytical Services-Asheville
Cyanide ND mg/L 0.0080 1 01/30/23 17:28 01/30/23 20:29 57-12-5
REPORT OF LABORATORY ANALYSIS
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Pace Analytical Services,LLC
aceAnaVical s 9800 kIncey Ave. Suite 100
Mete prale�rer Huntersvills,NC 28078
(70418758092
QUALITY CONTROL DATA
Project EOTP 1-25-23
Pace Project No.: 92648841
QC Batch: 752567 Analysis Method: EPA 200.8
QC Batch Method: EPA 200.8 Analysis Description: 200.8 ATL
Laboratory: Pace Analytical Services-Peachtree Corners.GA
Associated Lab Samples: 92848841001
METHOD BLANK: 3910038 Matrix: Water
Associated Lab Samples: 92848841001
Blank Reporting
Parameter Units Result Limit Analyzed Qualifiers
Cadmium ug/L ND 0.50 01/30/23 17:45
Chromium ugh ND 5.0 01/30/23 17:45
Copper ug/L ND 5.0 01/30/2317:45
Lead ug/L ND 1.0 01/30/23 17:45
Nickel ug/L ND 5.0 01/30/23 17:45
Silver ugh ND 5.0 01/30/23 17:45
Zinc ug/L ND 10.0 01/30/23 17:45
LABORATORY CONTROL SAMPLE: 3910039
Spike LCS LCS %Rec
Parameter Units Conc. Result %Rec Limits Qualifiers
Cadmium ugh 100 98.2 98 85-115
Chromium ugh 100 98.9 99 85-115
Copper ugh 100 100 100 85-115
lead ugh 100 98.7 99 85-115
:kel ugh 100 99.0 99 85-115
.,liver ugh 100 99.5 100 85-115
Zinc ugh 100 98.5 99 85-115
MATRIX SPIKE 8 MATRIX SPIKE DUPLICATE: 3910040 3910041
MS MSD
92648740001 Spike Spike MS MSD MS MSD %Rec
Parameter Units Result Conc. Conc. Result Result %Rec %Rec Limits RPD Quel
Cadmium ugh ND 100 100 102 102 102 102 70-130 0
Chromium ugh 1.7J 100 100 103 102 101 100 70-130 0
Copper ug/L ND 100 100 102 103 102 103 70-130 1
Lead ug/L ND 100 100 101 99.3 101 99 70-130 2
Nickel ug/L ND 100 100 102 100 101 100 70-130 1
Silver ugh ND 100 100 101 98.4 101 98 70-130 3
Zinc ug/L ND 100 100 103 102 100 100 70-130 1
MATRIX SPIKE 8 MATRIX SPIKE DUPLICATE: 3910255 3910256
MS MSD
92648664001 Spike Spike MS MSD MS MSD %Rec
Parameter Units Result Conc. Conc. Result Result %Rec %Rec Limits RPD Qual
Cadmium ugh ND 100 100 95.5 97.7 95 98 70-130 2
nouns presented on tine page ere In the unite Indicated by the"UMW column except*here an alternate unit Is presented to the right of the result,
REPORT OF LABORATORY ANALYSIS
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acGArA/ju Wre Pace Analytical Services,LLC
4800 Macey Suss 100
Humersville,NC 28078
restMplafsamn
n04}875-9092
QUALITY CONTROL DATA
Project EOTP 1-25-23
Pace Project No.: 92648841
MATRIX SPIKE&MATRIX SPIKE DUPLICATE: 3910255 3910256
MS MSD
92648664001 Space Spike MS MSD MS MSD %Rec
Parameter Units Result Conc. Conc. Result Result %Rec %Rec Limits RPD Dual
Chromium ug/L 6.2 100 100 99.5 100 93 94 70-130 1
Copper ug/L ND 100 100 93.9 94.5 89 90 70-130 1
Lead ug/L ND 100 100 89A 89.6 89 90 70-130 1
Nickel ug/L 190 100 100 275 269 85 79 70-130 2
Silver ug/L ND 100 100 88.9 90.5 90 91 70-130 1
Zinc ug/L 186 100 100 270 267 84 82 70-130 1
*mutts presented on this page are to the units tndieetad by the'theta"column except when an aternota trait Is presented to the rights(the result
REPORT OF LABORATORY ANALYSIS
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Pace Analytical Services,LLC
9s00 kancey Ave. Sults 100
Ct+n+ru LA! Huntersville,NC 28078
tenet tsttssen [phone]
QUALITY CONTROL DATA
Project EOTP 1-25-23
Pace Project No.: 92648841
CC Batch: 752644 Analysis Method: SM 4500-CN-E-2018
CC Batch Method: SM 4500-CN-E-2016 Analysis Description: 4500CNE Cyanide,Total
Laboratory: Pace Analytical Services-Asheville
Associated Lab Samples: 92848841002
METHOD BLANK: 3910506 Matrix: Water
Associated Lab Samples: 92648841002
Blank Reporting
Parameter Units Result Limit Analyzed Qualifiers
Cyanide mg&L ND 0.0080 01/30/23 20:16
LABORATORY CONTROL SAMPLE: 3910507
Spike LCS LCS e%Rec
Parameter Units Conc. Result %Rec Limits Qual8sts
Cyanide mg/L 0.1 0.10 102 80-120
MATRIX SPIKE&MATRIX SPIKE DUPLICATE: 3910508 3910509
MS MSD
92648843003 Spike Spike MS MSD MS MSD %Rec
Parameter Units Result Conc. Conc. Result Result %Rec %Rec Limits RPD Dual
Cyanide rng/L ND 0.1 0.1 0.090 0.085 86 82 80-120 5
ATRIX SPIKE&MATRIX SPIKE DUPLICATE: 3910510 3910511
MS MSD
92648843004 Spite Spike MS MSD MS MSD %Rec
Parameter Units Result Conc. Conc. Result Result %Rec %Rec Limits RPD Qual
Cyanide mg& ND 0.1 0.1 0.096 0.098 94 94 80-120 0
Rautte presented on thla pega are In the unite indicated by tha'Unite"column except where an alternate unil to presented to the right at the result.
REPORT OF LABORATORY ANALYSIS
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® Pace Analytical 8eMcaa,LLC
���nalyti'/+q� 8800 Kincey Ave.Side 100
cal Huntersvite,NC 28078
rnc}seddasana [phone]
QUALIFIERS
Project EOTP 1-25-23
Pace Project No.: 92E48841
DEFINITIONS
DF-Dilution Factor,if reported,represents the factor applied to the reported data due to dilution of the sample aliquot.
ND-Not Detected at or above adjusted reporting limit.
TNTC-Too Numerous To Count
J-Estimated concentration above the adjusted method detection limit end below the adjusted reporting limit.
MDL-Adjusted Method Detection Limit.
POL-Practical Quantitation Limit.
RL-Reporting Limit-The lowest concentration value that meats project requirements for quantitative data with known precision and
bias for a specific analyte in a specific matrix.
S-Surrogate
1,2-Dlpheny hydrazine decomposes to and cannot be separated from Azobenzene using Method 8270.The result for each analyte is
a combined concentration.
Consistent with EPA guidelines,unrounded data are displayed and have been used to calculate%recovery and RPD values.
LCS(D)-Laboratory Control Sample(Duplicate)
MS(D)-Matrix Spire(Duplicate)
DUP-Sample Duplicate
RPD-Relative Percent Difference
NC-Not Calculable.
SG-Silica Gel-Clean-Up
U-Indicates the compound was analyzed for,but not detected.
Acid preservation may not be appropriate for 2 Chioroethylvinyl ether.
A separate vial preserved to a pH of 4-5 is recommended in 5W848 Chapter 4 for the analysis of Acrolein and Acryionitrile by EPA
Method 8260.
t4-Nttrosodiphenyfamine decomposes and cannot be separated from Diphenylamine using Method 8270. The result reported for
each analyte is a combined concentration.
Reported results are not rounded until the final step prior to reporting.Therefore,calculated parameters that are typically reported as
'Toter may vary slightly from the sum of the reported component parameters.
Pace Analytical is TNt accredited.Contact your Pace PM for the current list of accredited analytes.
TNt-The NELAC Institute.
REPORT OF LABORATORY ANALYSIS
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Pace Analytical Services,LLC
G �7V'I'f`!'�"!
Ana 1.__�s MOO KinoeyAve. Suite 100
Hvntarsvl0e,NC 28078
www.pnla31.cara C704)8754092
QUALITY CONTROL DATA CROSS REFERENCE TABLE
Project: EOTP 1-25-23
Pace Project No.: 92648841
Analytical
Lab ID Sample ID QC Batch Method QC Batch Analytical Method Batch
92645841001 EOTP 1-25-23 METALS EPA200.8 752587 EPA 200.8 752679
92648841002 EOTP 1-25-23 CYANIDE SM 4500-CN-E-2016 752644 SM 4500-CN-E-2016 752709
REPORT OF LABORATORY ANALYSIS
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