NC0005258_application_20230219

February 17, 2023
Mr. Douglas Dowden
Environmental Program Supervisor II
Division of Water Resources / Permitting
Department of Environmental Quality
1617 Mail Service Center
Raleigh, NC 27699-1617
Submitted via Email: [e-mail]
RE: Application for Permit Renewal
Permit No. NC0005258
SGL Carbon LLC
Morganton, NC
Dear Mr. Dowden
SGL Carbon LLC is submitting the attached Permit Renewal Application for the SGL Carbon
LLC - Morganton Facility. A paper copy of the attached application will also be mailed to the
Division of Water Resources / Permitting.
Please contact me at 828-925-0572 or [e-mail] if you have any
questions.
Sincerely,
SGL Carbon LLC ------
Stephen Richards
EHS Manager
Attachment

PermitApplication for
Permit
l.- . O i 0 ' Y:.
LF
sgi carbon
SGL Carbon LLC
307 3amestown Road
Morganton, North Carolina
'ebruary 2023
TRINITY CONSULTANTS
1 Copley Pkwy, Ste 205
Morrisville, NC 27560
919-561-7055
Project Number 233402.0049
2
Trinri)(
Consultants

TABLE OF CONTENTS
EPA Form 3510-1
Section 7.0 Attachment - Map
EPA Form 3510-2C
Section 2.0 Attachment — Line Drawing
Section 7.0 Attachment — Table A thru Table E and Analytical Results

EPA Form i

EPA Identification Number
NPDES Permit Number
Facility Name
Form Approved 03/05/19
NCR000138214
N00005258
SGL Carbon LLC
OMB No. 2040-0004
Form
U.S. Environmental Protection Agency
1
\EPA
Application for NPDES Permit to Discharge Wastewater
NPDES
GENERAL INFORMATION
1. ACTIVITIES
REQUIRINGSECTION r r
Applicants Not Required to Submit Form 1
1.1
1.1.1
Is the facility a new or existing publicly owned
1.1.2
Is the facility a new or existing treatment works
treatment works?
treating domestic sewage?
If yes, STOP. Do NOT complete ❑✓ No
If yes, STOP. Do NOT 0 No
Form 1. Complete Form 2A.
complete Form 1. Complete
Form 2S.
1.2
Applicants Required to Submit Form 1
1.2.1
Is the facility a concentrated animal feeding
1.2.2
Is the facility an existing manufacturing,
operation or a concentrated aquatic animal
commercial, mining, or silvicultural facility that is
IL
production facility?
currently discharging process wastewater?
❑ Yes 4 Complete Form 1 No
✓� Yes 4 Complete Form No
IL
and Form 2B.
1 and form 2C.
A1.2.3
Is the facility a new manufacturing, commercial,
1.2.4
Is the facility a new or existing manufacturing,
mining, or silvicultural facility that has not yet
commercial, mining, or silvicultural facility that
commenced to discharge?
discharges only nonprocess wastewater?
d
Yes 4 Complete Form 1 0 No
Yes 4 Complete Form �✓ No
and Form 2D.
1 and Form 2E.
4l _c
a=:
1.2.5
Is the facility a new or existing facility whose
discharge Is composed entirely of stormwater
associated with industrial activity or whose
discharge is composed of both stormwater and
non-stormwater?
Yes 4 Complete Form 1 ❑✓ No
and Form 2F
unless exempted by
40 CFR
122.26(b)(14)(x) or
b 15.
SECTION
2. NAME,
MAILING rr• ,i
Faciii Name
2.1
SGL Carbon LLC
2.2
EPA Identification Number
mo s
J ;,
NCR000138214
v
2.3
Facility Contact
Name (first and last)
Title
Phone number
9 1
Stephen Richards
EHA Manager
[phone]
Email address
:;a
[e-mail]
2.4
Facility Mailing Address
zStreet
or P.O. box
307 Jamestown Road
City or town
State
ZIP code
Morganton
NC
28655
EPA Form 3510-1 (revised 3-19) Page 1

EPA Identification Number
NPDES Permit Number
Facility Name
Form Approved 03/05/19
NCR000138214
NC0005258
SGL Carbon LLC
OMB No. 2040-0004
d'
2.5
facility Location
Street, route number, or other specific identifier
4 V „
307 Jamestown Road
Ce
c
County name
County code (if known)
WE
Burke
E
City or town
State
ZIP code
z A i
IMorganton
NC
28655
SECTION
3. SIC
r NAICS CODESr CFR
Description (optional)
3.1
SIC Code(s)
o:-:.::
y
3.2
NAICS Code(s)
Description (optional)
335991
Carbon and Graphite Product Manufacturing
'`Name of Operator
4.1
SGL Carbon LLC
o
4.2
Is the name you listed in Item 4.1 also the owner?
o
0Yes El No
0 ,
4.3
iOperator Status
❑ Public —federal ❑ Public —state ❑ Other public (specify)
o
❑✓ Private ❑ Other (specify)
4.4
<Phone Number ofOperator
[phone]
4.5
Operator Address
Street or P.O. Box
307 Jamestown Road
City or town
State
ZIP code
'`q V
Morganton
NC
28655
a
Email address of operator
O
SECTION
5. INDIAN
LAND , r
Is the facility located on Indian Land?
o
5.1
_ �,,
3
❑ Yes ❑✓ No
EPA Form 3510-1 (revised 3.19) Page 2

EPA IdentiRpdon Number NPDES Permit Number Facility Name Form Approved 03/05/19
NCR000138214 I NC0005258 SGL Carbon LLC OMB No. 2040-0004
SECTION• 1
6.1 Existing Environmental Permits (check all that apply and print or type the corresponding permit number for each)
d
m NPDES (discharges to surface
❑ RCRA (hazardous wastes)
❑ UIC (underground injection of
Q
water)
fluids)
NCS000009
t a
❑ PSD (air emissions)
❑ Nonattainment program (CAA)
❑ NESHAPs (CAA)
C
032a7i37
in
❑ Ocean dumping (MPRSA) ❑ Dredge or fill (CWA Section 404) ❑ Other (specify)
SECTION
7. MAP
7.1
Have you attached a topographic map containing all required information to this application? (See instructions for
specifcrequirements.)
❑✓ Yes ❑ No ❑ CAFO—Not Applicable (See requirements in Form 2B.)
SECTION;
OF ;
Describe the nature of your business.
8.1
Producer of unique graphite and composite materials and products.
c
y
to
:
O
SECTION••
1
Does your facility use cooling water?
✓❑ Yes El No 4 SKIP to Item 10.1.
A
the source of cooling water. (Note that facilities that use a cooling water intake structure as described at
uIdentify
F9.
40 CFR 125, Subparts I and J may have additional application requirements at 40 CFR 122.21(r). Consult with your
NPDES permitting authority to determine what specific information needs to be submitted and when.)
The water is obtained from the City of Morganton.
SECTION1
VARIANCE
REQUESTS1
Do you Intend to request or renew one or more of the variances authorized at 40 CFR 122.21(m)? (Check all that
10.1
(
apply. Consult with your NPDES permitting authority to determine what information needs to be submitted and
d
when.)
d
❑ Fundamentally different factors (CWA ❑ Water quality related effluent limitations (CWA Section
Section 301 (n)) 302(b)(2))
„
❑ Non -conventional pollutants (CWA ❑ Thermal discharges (CWA Section 316(a))
Section 301(c) and (g))
❑✓ Not applicable
EPA Form 3510-1 (revised 3-19) Page 3

EPA Identification Number _- NPDES Permit Number Facility Name Form Approved U3Nb1e
NCR000138214 NC0005258 SGL Carbon LLC OMB No. 2040-0004
In Column 1 below, mark the sections of Form 1 that you have completed and are submitting with your application.
11.1
For each section, specify In Column 2 any attachments that you are enclosing to alert the permitting authority. Note
that not all applicants are required to provide attachments.
Column 1
Column 2
❑✓ Section 1: Activities Requiring an NPDES Permit
❑ w/ attachments
❑✓ Section 2: Name, Mailing Address, and Location
❑ w/ attachments
❑✓ Section 3: SIC Codes
❑ wl attachments
✓❑ Section 4: Operator Information
❑ w/ attachments
❑✓ Section 5: Indian Land
❑ wl attachments
❑✓ Section 6: Existing Environmental Permits
❑ wl attachments
c
E
❑✓ Section 7: Map
w/topographic
❑✓ ❑ w/ additional attachments
2
ma
o, ;,,
❑✓ Section 8: Nature of Business
❑ wl attachments
❑✓ Section 9: Cooling Water Intake Structures
❑ w/ attachments
ci
Section 10: Variance Requests
❑ col attachments
m
�,,,,,
❑✓ Section 11: Checklist and Certification Statement
❑ col attachments
Y v
11.2
Certification Statement
1 certify underpenalty of law that this document and all attachments were prepared undermy direction orsupervision
in accordance with a system designed to assure that qualified personnel property 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.) am aware that there are significant penalties for submitting false information,
including the possibility of Me and imprisonment for knowing violations.
Name (print or type first and last name)
Official title
Stephen Richards
EHA Manager
Signature
Date signed
EPA Form 3510-1 (revised 3-19) Page 4

I Section 0 1.

P
05/
iABi 'B I092
1
/026 •.:/, .,.
126
0-.
X
.AER MAD'O W
>°
.,
/
1 ,
r
`'�.� � � r
��
�•!_ tom'-:,�-"• J
-f 6 -' �� ��..-.
SGL Carbon, LLC�'�'�
� r� a•i ` ;Galvin
,; +'", •.. soUTHERN .."'"" 6M. :�
✓ Downstream ` \
Upstream
Discharge
NC0005258 v� �
��
J ti _ 10 '•I
� )
SCALE
USGS Quad: E13NW Morganton, NC
Outfall Facility
Latitude: 35' 43' 4111 N 350 43' 53" N
`
r
Longitude: 81° 43' 3511 W 810 43' 35" W
h
Facility Location
Stream Class: WS-IV
North
Subbasin: 03-08-30 HUC: 03050101
SGL Carbon NC0005258
Receiving Stream: Silver Creek
Burke County

EPA Form1

EPA ldentilicallon Number NPDES Permit Number Facility Name - Form Approved 03/05/19
NCR000138214 NC0005258 SGL Carbon LLC OMB No. 2040-0004
Form U.S. Environmental Protection Agency
2C \�/EPA Application for NPDES Permit to Discharge Wastewater
NPDES EXISTING MANUFACTURING, COMMERCIAL, MINING, AND SILVICULTURE OPERATIONS
1.1 1 Provide information on
001 Silver Creek 35° 43' 41" 81, 43' 45"
2.1 Have you attached aline drawing to this application that shows the water flow through your facility with a water
balance? (See instructions for drawing requirements. See Exhibit 2C-1 at end of instructions for example.)
❑✓ Yes ❑ No
3.1 1 For each outfall identified under Item 1.1, provide average flow and treatment Information. Add additional sheets if
Stormwater .002 mgd
Coolingwater .407 mgd
mgd
mgd
lm
NA
NA
EPA Form 3510-2C (Revised 3-19) Page 1

EPA Identification Number
NPDES Permit Number
Facility Name
Form Approved 03/05119
NCR000138214
NC0005258
SGL Carbon LLC
OMB No. 2040-0004
3.1
"Ouffall Number** NA
cont.
Operations Contributing
to Flow
Operation
Average Flow
mgd
mgd
mgd
mgd
Treatment
Description
Units
Code from
Final Disposal of Solid or
(include size, flow rate through each treatment unit,
Table 2C-1
Liquid Wastes Other Than
retention time, etc.)
by Discharge
0
ct
"Outfall Number*` NA
Operations Contributing to Flow
o
Operation '. Average Flow
or
mgd
_
O
mgd
mgd
mgd
Description
Code from
Final Disposal of Solid or
(include size, flow rate through each treatment unit,
Table 2C-1
Liquid Wastes Other Than
retention time, eta
by Discharge
3.2
Are you applying for an NPDES permit to operate a privately owned treatment works?
E d
❑ Yes ❑✓ No 4 SKIP to Section 4.
y =
3.3
Have you attached a list that Identifies each user of the treatment works?
❑ Yes ❑ No
EPA Form 3510-2C (Revised 3-19) Page 2

EPA identification Number NPDES Permit Number Facility Name Form Approved 03/05119
NCR000138214 NC0005258 SGL Carbon LLC OMa No.2040-0004
SECTION 4. INTERMITTENT FLOWS (40 CFR 122.21(g)(4))
4.1 Except for storm runoff, leaks, or spills, are any discharges described in Sections 1 and 3 Intermittent or seasonal?
❑ Yes ❑✓ No 4 SKIP to Section 5.
4.2
Provide Information
on Intermittent or seasonal flows for each applicable outfall.
Attach additional pages, if n cessary.
Frec
uency
Flow Rate
Outfall
Operation
Duration
Average
Average
Long -Term
Maximum
Number
(list)
Da slWeek
MonthsNear
Average
Dail
daystweek
monthslyear
mgd
mgd
days
cdaystweek
months/year
mgd
mgd
days
ri
�.
days/week
months/year
mgd
mgd
days
�€
daysMeek
monthslyear
mgd
mgd
days
m
days/week
monthslyear
mgd
mgd
days
days/week
monthslyear
mgd
mgd
days
daystweek
monthslyear
mgd
mgd
days
daystweek
monthslyear
mgd
mgd
days
daystweek monthslyear mgd mgd days
SECTIONPRODUCTION
Do any effluent limitation guidelines (ELGs) promulgated by EPA under Section 304 of the CWA apply to your facility?
5.1
❑ Yes ❑✓ No 4 SKIP to Section 6.
ti
5.2
Provide the following information on applicable ELGs.
ELG Category
ELG Subcategory
Regulatory Citation
W
.2
O.
5.3
Are any of the applicable ELGs expressed in terms of production (or other measure of operation)?
❑ Yes ❑ No 4 SKIP to Section 6.
5.4
Provide an actual measure of daily production expressed In terms and units of applicable ELGs.
E
Oulfail
Operation, Product, or Material
Quantity per Day
M
o
Number
Measure
d
C i
Y i
a; -
EPA Form 3510-2C (Revised 3-19) Page 3

EPA ldenti0calion Number NPDES Permit Number Facility Name Form Approved 03/05/19
NCR000138214 NC0005258 SGL Carbon LLC OMB No. 2040-0004
SECTION• r
6.1 Are you presently required by any federal, state, or local authority to meet an implementation schedule for constructing,
upgrading, or operating wastewater treatment equipment or practices or any other environmental programs that could
affect the discharges described in this application?
❑ Yes ❑✓ No 4 SKIP to Item 6.3.
6.2
Briefly identify each applicable project in the table below.
Affected
Final Compliance
Dates `
E
Brief Identification and Description of
Ouffalls
Source(s) of,
Q
Project
(listoutfall
Discharge
Required
Projected
c ;
number
E
vi
ro ;
>rd
E
6.3
Have you attached sheets describing any additional water pollution control programs (or other environmental projects
that may affect your discharges) that you now have underway or planned? (optional item)
❑ Yes ❑ No ❑✓ Not applicable
SECTIONr
See the Instructions to determine the pollutants and parameters you are required to monitor and, in turn, the tables you must
complete. Not all applicants need to complete each table.
Table A. Conventional and Non -Conventional Pollutants
7.1
Are you requesting a waiver from your NPDES permitting authority for one or more of the Table A pollutants for any of
your ouffalls?
❑ Yes No 4 SKIP to Item 7.3.
7.2
If yes, indicate the applicable ouffalls below. Attach waiver request and other required information to the application.
Outfall Number Oulfall Number_ Ouffall Number_
a
7.3
Have you completed monitoring for all Table A pollutants at each of your ouffalls for which a waiver has not been
y
requested and attached the results to this application package?
❑ Yes Additional data is forthcoming. ❑ No; a waiver has been requested from my NPDES
12
permittingauthority for all pollutants at all ouffalls.
TableB. Toxic Metals, 'Cyanide, Total Phenols,and Organic Toxic Pollutants
�e
7.4
Do any of the facility's processes that contribute wastewater fall into one or more of the primary industry categories
listed in Exhibit 2C-3? (See end of instructions for exhibit.)
❑ Yes ✓❑ No + SKIP to Item 7.8.
7.5
Have you checked "Testing Required" for all toxic metals, cyanide, and total phenols in Section 1 of Table B?
w
❑ Yes ❑ No
7.6
List the applicable primary industry categories and check the boxes Indicating the required GC/MS fraction(s) identified
in Exhibit 2C-3.
Primary Industry Category
Required GCIMS Fraction(s)
Check applicable boxes,
NA
❑ Volatile ❑ Acid ❑ BaselNeutral ❑ Pesticide
❑ Volatile ❑ Acid ❑ Base/Neutral ❑ Pesticide
❑ Volatile ❑ Acid ❑ Base/Neutral ❑ Pesticide
EPA Form 3510-2C (Revised 3-19) Page 4

EPA Identification Number
NPDES Permit Number
Facility Name
Form Approved 03/05/19
NCR000138214
NC0005258
SGL Carbon LLC
OMB No. 2040-0004
7.7
Have you checked 'Testing Required" for all required pollutants In Sections 2 through 5 of Table B for each of the
GC/MS fractions checked in Item 7.6?
❑ Yes ❑ No
7.8
Have you checked "Believed Present" or "Believed Absent" for all pollutants listed in Sections 1 through 5 of Table B
where testing Is not required?
❑✓ Yes ❑ No
7.9
Have you provided (1) quantitative data for those Section 1, Table B, pollutants for which you have indicated testing is
required or (2) quantitative data or other required Information for those Section 1, Table B, pollutants that you have
indicated are 'Believed Present" in your discharge?
© Yes ❑ No
7.10
Does the applicant qualify for a small business exemption under the criteria specified In the Instructions?
❑ Yes 4 Note that you qualify at the top of Table B, ❑✓ No
a
then SKIP to Item 7.12.
c
7.11
Have you provided (1) quantitative data for those Sections 2 through 5, Table B, pollutants for which you have
determined testing is required or (2) quantitative data or an explanation for those Sections 2 through 5, Table B,
ca
pollutants you have indicated are "Believed Present" in your discharge?
13
❑✓ Yes ❑ No
Table C.`Certaln Conventional and Non -Conventional Pollutants
E7.12
Have you indicated whether pollutants are "Believed Present" or "Believed Absent" for all pollutants listed on Table C
for all outfalls?
Y»;
❑✓ Yes ❑ No
7.13
Have you completed Table C by providing (1) quantitative data for those pollutants that are limited either directly or
Indirectly in an ELG and/or (2) quantitative data or an explanation for those pollutants for which you have indicated
@
"Believed Present"?
❑✓ Yes ❑ No
w
Table D. Certain Hazardous Substances and Asbestos
7.14
Have you Indicated whether pollutants are "Believed Present" or "Believed Absent" for all pollutants listed in Table D for
all outfalis?
❑✓ Yes ❑ No
7.15
Have you completed Table D by (1) describing the reasons the applicable pollutants are expected to be discharged
and (2) by providing quantitative data, if available?
❑✓ Yes ❑ No
Table E. 2,3,7,8•Tetrachlorodibenzo- •Dioxin 2,3,7,8•TCDD
7.16
Does the facility use or manufacture one or more of the 2,3,7,8-TCDD congeners listed in the instructions, or do you
know or have reason to believe that TCDD is or may be present In the effluent?
❑ Yes 4 Complete Table E. ❑✓ No 4 SKIP to Section 8.
7.17
Have you completed Table E by reporting qualitative data for TCDD?
❑ Yes ❑ No
SECTIONOR
• r
is any pollutant listed In Table B a substance or a component of a substance used or manufactured at your facility as
8.1
d
an intermediate or final product or byproduct?
❑ Yes ❑✓ No 4 SKIP to Section 9.
! Yi
8.2
List the pollutants below.
-'
1. 4. 7.
d
N
2. 5. 8.
3. 6. 9.
EPA Form 3510-2C (Revised 3-19) Page 5

EPA Identification Number NPDES Permit Number Fadlily Name Form Approved 03/05/19
NCR000138214 NC0005258 SGL Carbon LLC OMB No. 2040-0004
SECTION• • • m
9.1 Do you have any knowledge or reason to believe that any biological test for acute or chronic toxicity has been made
within the last three years on (1) any of your discharges or (2) on a receiving water in relation to your discharge?
❑✓ Yes ❑ No 4 SKIP to Section 10.
9.2
Identify the tests and their
ur oses below.
Test(s)
Purpose of Test(s)
Submitted to NPDES
Date Submitted
•o
Permitting Authority?
r-
CERI7DPF
Permit Required
✓❑ Yes ❑ No
01/11/2023
'rn
.22
❑ Yes ElNo
❑ Yes ❑ No
SECTIONr
CONTRACT
10.1
ANALYSES (40
Were any of the analyses reported in Section 7 performed by a contract laboratory or consulting firm?
❑✓ Yes ❑ No 4 SKIP to Section 11.
10.2
Provide Information for each contract laboratory or consulting firm below.
Laboratory Number l '
Laboratory Number 2
Laboratory Number 3
Name of laboratory/firm
SGL Carbon LLC
Meritech Inc.
Laboratory address
307 Jamestown Rd
642 Tamco Rd, Reidsville, NC
,... ,.:.
a
Morganton NC
27320
Phone number
[phone]
[phone]
Pollutant(s) analyzed Temperature, pH, Chlorine Total Suspended Solids,
Chronic Toxicity, Copper, Total
Hardness, Lead, Oil and Grease,
Selenium
Has the NPDES permitting authority requested additional information?
11.1
.:..,c.,-.:.
❑ Yes ❑✓ No 4 SKIP to Section 12.
11.2
List the information requested and attach it to this application.
1. 4.
v
2. 5.
;
v
a
3. 6.
EPA Form 3510-2C (Revised 3-19) Page 6

EPA ldenlifcsUon Number - NPDES Permit Number Facility Name Form Approved 03/05/19
NCR000138214 NC0005258 SGL Carbon LLC OMB No. 2040-0004
SECTION
12. CHECKLIST
AND CERTIFICATION STATEMENT (40 CFR 122.22(a) and (d))
In Column 1 below, mark the sections of Form 2C that you have completed and are submitting with your application.
12.1
For each section, specify In Column 2 any attachments that you are enclosing to alert the permitting authority. Note
that not all applicants are required to corr plate all sections or provide attachments.
Column 1
Column 2
❑✓ Section 1: Outfall Location
❑ w/ attachments
❑✓ Section 2: Line Drawing
✓❑ w/ line drawing ❑ w/ additional attachments
Section 3: Average Flows and
w/ list of each user of
❑ w/ attachments El privately owned treatment
Treatment
works
❑✓ Section 4: Intermittent Flows
❑ w/ attachments
❑✓ Section 5: Production
❑ w/ attachments
w/ optional additional
❑✓ Section 6: Improvements
❑ w/ attachments ❑ sheets describing any
additional pollution control
tans
❑ w/ request for a waiver and ❑ w/ explanation for identical
supporting information outfalls
m
❑ w/small business exemption E] w/ other attachments
E
request
`"
Section 7: Effluent and Intake
❑✓
❑✓ w/ Table A ❑✓ wl Table B
Characteristics
0
❑✓ w/ Table C ❑✓ w/ Table D
w/ analytical results as an
❑✓ w/ Table E
attachment
Section 8: Used or Manufactured
❑
E]w/ attachments
Toxics
✓❑ Section 9: Biological Toxicity
❑ w/ attachments
Tests
a
© Section 10: Contract Analyses
❑ wl attachments
❑✓ Section 11: Additional Information
❑ w/ attachments
❑✓ Section 12: Checklist and
❑ w/ attachments
Certification Statement
12.2
Certification Statement
1 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 property 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.) am aware that there are significant penalties for submitting false information, including the
possibility of fine and imprisonment for knowing violations.
Name (print or type first and last name)
Official title
Stephen Richards
EHA Manager
Signature —
Date signed
EPA Form 3510-2C (Revised 3-19) Page 7

Section 2.0 Attachment — Line Drawing

150,000 #GPD
Exstrusion Bldg.
1,2,15,15a,3
20,000 #GPD
Municipal Water Supply
430,000 #G P D
Bake Building 55
Bake Building 5
50,000 #GPD
SGL Carbon, LLC
Morganton NC NC0005258
Bake Building 57
50,000 #GPD
.®'
100,000#GPD
Weir Outfall #001
Municipal Water Supply
50,000 #GPD
Graphite Bldg 24
30,000#GPD
Cooling Tower
7,000 #GPD
407,000 #GPD + Storm Water
Stormwater — —� — —
Silver Creek

Section 7.0 Attachment — Table A thru
Table E and Analytical Results

EPA Identification Number
NPDES Permit Number Facility Name
Ouffall Number
Form Approved 03/05/19
NCR000138214
NC0005258 SGL Carbon LLC
001
OMB No. 2040-0004
TABLE
A. CONVENTIONAL AND NON•
• POLLUTANTS (40
Effluent
Intake
Pollutant
Waiver
Requested Units
o lion
Maximum
Maximum
Long -Term
(spedy)
Daily
Monthly
Average Daily
Number of
Long -Terra
Number of
fdappficable)i
Discharge
Discharge
Discharge
Analyses
Average Value
Analyses
reuired
'.: Savailable ::
davailable
❑
Check here if you have applied to your NPDES permitting authority for a waiver for all of the pollutants listed on this table for the noted outfall.
1.
Biochemical oxygen demand
❑
Concentration
Mass
(BOD5)
2'
Chemical oxygen demand
❑
Concentration
Mass
(COD)
Concentration
3.
Total organic carbon (TOC)
❑
Mass
Concentration
mg/L
7
58
4.
Total suspended solids (TSS)
❑
Mass
Concentration
5.
Ammonia (as;N)
❑
Mass
6.
Flow
❑
Rate
MGD
1.74
58
Temperature (winter)
❑
°C
°C
14.82
13
7.
Temperature (summer)
❑
°C
°C
24.97
15
pH (minimum)
❑
Standard units
s.u.
6.42
58
8.
pH (maximum)
❑
Standard units
S.U.
7.20
58
r Sampling shall be conducted according to sufficiently sensitive test procedures (i.e., methods) approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or
required under 40 CFR chapter I, subchapter N or 0. See instructions and 40 CFR 12221(e)(3).
Note:' Parameters highlighted in yellow will be analyzed and the results will be forwarded to DEQ upon receipt.
EPA Form 3510-2C (Revised 3-19) Page 1

NCR000138214
NC0005258
SGL Carbon LLC
001
Form Approved 03105/19
OMB No. 2040-0004
Presence or Absence
Intake
dhedc one
Effluent
(optional)
PollutantlParameter
(and GAS Number,lf available)
Testing'
Required
Believed'
Believed
Units
(specify)
Maximum
Maximum
Lon
Average g-Tenn
Number
Lon
Number
Present i
Absent
Daily
Disc,Daily
Monthly
of
Term
verag
of
(required)
ifava„la�)
Discharge
Analyses
AVa uee
Analyses
d available
El
Check here if you qualify as a small business per the instructions to Form 2C and, therefore, do not need to submit quantitative data for any of the organic toxic pollutants in Sections
2 through 5 of this table. Note, however, that you must still indicate in the appropriate column of this table if you believe any of the pollutants listed are present in your discharge.
Section 1 Toxic Metals, Cyanide, and Total Phenols
1.1
Antimony, total
Concentration
(7440-36-0)
Mass
12
Arsenic total
El
El
F/i
Concentration
(7440-38-2)
Mass
1.3
Beryllium, total
El
El
O
Concentration
(7440-41-7)
Mass
1.4
Cadmium, total
El
El
Z
Concentration
(7440-43-9)
I
Mass
1.5
Chromium, total
❑
Concentration
(7440147-3)
Mass
1.6
Copper, total
O
Concentration
mg/L
0.0146
20
(7440-50-8)
Mass
1.7
Lead total
❑✓
❑
El
Concentration
mg/L
0
5
(7439-92-1)
Mass
1.8
Mercury, total
ci
❑
Concentration
(7439-97-6)
Mass
1.9
Nickel total
El
z
Concentration
(7440-02-0)
Mass
1.10
Selenium, total
El
El
concentration
mg/L
0.026
S
(7782-49-2)
Mass
1.11
Silver, total
El
11
❑
Concentration
(7440-22-4)
Mass
EPA Form 3510.2C (Revised 3-19)
Page 2

\ Iderdiication Number NPDES Permit Number Fadfity Name Outfall Number Form Approved 03105/19
NC NC0005258 SGL Carbon LLC 001 OMB No. 2040-0004
Testing
Required
Presence or Absence
diedc one
Units
(specify)
Effluent
Intake
(optional) i
PollutantlParameter
(and CAS Number, if available)
Believed
Present
Believed
Absent
Maximum
Daily
Discharge
(required)
Maximum
Monthly
Discharge
(if available)
Long -Terre
Average
Discharge
<- rfavailable
Number
of
Analyses
Long-
Term
Ave Ve
aue
Number
orf
Analyses
1.12
Thallium, total
(7440-28-0)
El
1
R1
Concentration
Mass
1.13
Zinc total
(7440-66-6)
El
El
s
Concentration
Mass
1.14
Cyanide, total
(57-12-5)
El
El
Concentration
Mass
1.15
Phenols, total
El
R1Mass
Concentration
Section 2. Organic Toxic Pollutants'(GCIMS Fraction -Volatile Compounds)
21
Acrolein
(107-02-8)
El
IZI
Concentration
Mass
2.2
Acrylonitrile
(107-13-1)
Concentration
Mass
23
Benzene
(71-43-2)
Concentration
Mass
24
Bromoform
(75-25-2)
❑
❑
❑
Concentration
Mass
2.5
Carbon tetrachloride
(56-235)
El
F/1
Concentration
Mass
2.6
Chlorobenzene
(108-90-7)
Concentration
Mass
2.7
Chlorodibromomethane
(124-48-1)
❑
0
❑
Concentration
Mass
2.8
Chloroethane
(75-00-3)
El
11
ED
Concentration
Mass
EPA Form 3510-2C (Revised 3-19) Page 3

EPA
NCR000138214
NC0005258
SGL Carbon LLC
001
Fonn Appmved 03105119
OMB No. 2040-0004
Presence or Absence
Intake
cM1eckone
Effluent
(optional)
Pollutant/Parameter
Testing
Units
Maximum
Maximum
Long -Term
Long-
(and CAS Number, Kavailable)
Required
Believed
Believed)
(spedfy)
Daily
Monthly
Average..
Number
Term
Number
Present'
Absent
Discharge
Ddavaille�)
Of
a
Of
Dichaarge
Analyses
Averag
Analyses
rfavailable
2.9
2-chloroethylvinyl ether
❑
❑
O
Concentration
Mass
(110-75-8)
2.10
Chloroform (67 66 3)
❑
ElConcentration
Mass
2.11
Dichlorobromomethane
El
❑
❑
Concentration
Mass
(75-27-4)
212
11-dichloroethane
El
❑
❑
Concentration
Mass
(75-34-3)
2.13
12-dichloroethane
❑
❑
❑
Concentration
Mass
(107-06-2)
214
11-dichloroethylene
❑
❑
❑
Concentration
Mass
(75-35-4)
2.15
12-dichloropropane
El
❑
❑
Concentration
(78-87-5)
Mass
216
13-dichloropropylene
❑
❑
O
Concentration
Mass
(542-7M)
2.17
Ethylbenzene
El
ElMass
Concentration
(100-41-4)
2.18
Methyl bromide
❑
❑
❑
Concentration
(74-83-9)
Mass
219
Methyl chloride
❑
❑
❑
Concentration
(74-87-3)
Mass
2.20
Methylene chloride
❑
❑
❑
Concentration
(75-09-2)
Mass
2.21
1 12 2- tetrachloroethane
❑
❑
O
Concentration
(79-34-5)
Mass
EPA Form 3510-2C (Revised 3-19) Page 4

EPA
NCR000138214
NC0005258
raaury Name
SGL Carbon LLC
001
Form Approved 03/05119
OMB No. 2040-0004
•
•
• 1 • '
• • • • 1
Presence or Absence
Intake
check one
Effluent
(optional)
PollutantlParameter
Testing
'
Units
Maximum
Maximum
Long -Tenn
Long"
and CAS Number,
Required
q
Believed
Believed
s
(Pev)
Daily
Monthly
Average
Number
Tenn
Number
Present
Absent
Discharge
Discharge
Dail
of
Average
of
(required)
(eavailable)
Discharge
ischfffable
Analyses
Value
Analyses'
222
Tetrachloroethylene
El
O
Concentration
Mass
(127-18-4)
2.23
Toluene
Concentration
Mass
(108-88-3)
2.24
12-trans-dichloroethylene
Concentration
Mass
(156-60-5)
225
11,1-trichioroethane
El
El
r/1
Concentration
Mass
(71-55-6)
2.26
1 1 2-trichloroethane
El
El
O
Concentration
Mass
(79-00-5)
2.27
Tdchloroethylene
❑✓
Concentration
Mass
(79-01-6)
2.28
Vinyl chloride
El
❑
✓❑
Concentration
Mass
(75-01-4)
Section3. Organic Toxic Pollutants '(GCIMS'Fraction—Acid Compounds)
31
2-chlorophenol
Ei
✓❑
Concentration
Mass
(95-57-8)
32
24-dichlorophenol
El
R1
Concentration
Mass
(120-83-2)
3.3
24-dlmethylphenol
11
El
O
Concentration
Mass
(105.67-9)
3.4
4 6-dinitro-o-cresol
Concentration
Mass
(534-52-1)
3.5
2,4-dlnitrophenel
El
El
R1
Concentration
(51-28-5)
1
1Mass
EPA Form 3510-2C (Revised 3.19) Page 5

NCR000138214
NC0005258
SGL Carbon LLC
001
Form Approved 03/05/19
OMB No. 2040-0004
TABLE
B. TOXIC METALS, CYANIDE,
TOTAL PHENOLS,
AND ORGANIC TOXIC
Presenceor Absence'
POLLUTANTS (40 CFR
122.21(g)(7)(v))l
Intake
checkone
Effluent
(optional)
PollutantlParameter
d CAS Number, ifavailable) ;cRequired
Testing
Believed' Believed
Units
(specify)
Maximum
Maximum
Long -Term
Average
Number
Long
Number
k
Present Absent
Daily
Discharge
Monthly
Discharge
Daily
of
Tenn
Average
of
(required)
(if available)
Discharge
Analyses
Value
Analyses
davailablephenol
Concentration-5)
Mass
3.7
4-nitrophenol
❑
✓❑
Concentration
(100-02-7)
Mass
3.8
p-chloro-m-cresol
El
❑
✓❑
Concentration
(59-50-7)
Mass
3.9
Pentachlorophenol
❑
11
F1
Concentration
(87-86-5)
Mass
3.10
Phenol
El
✓�
Concentration
(108-95-2)
Mass
3.11
24,6-tnchlorophenol
❑
El
❑
Concentration
(88-05-2)
1Mass
Section 4.'Organic Toxic Pollutants(GCIMS Fraction -Base /Neutral Compounds)
4.1
Acenaphthene
✓
Concentration
(63-32-9)
Mass
42
Acenaphthylene
❑
El
❑✓
Concentration
(208-96-8)
Mass
4.3
Anthracene
❑
✓❑
Concentration
(120-12-7)
Mass
4.4
Benzidine
❑
El
✓
Concentration
(92-87.5)
Mass
4.5
Benzo (a) anthracene
❑
Concentration
(56-55-3)
Mass
4.6
Benzo (a) pyrene
El
11
❑✓
Concentration
(50-32-8)
Mass
EPA Form 3510-2C (Revised 3-19) Page 6

NCR000138214
NC0005258
SGL Carbon LLC
001
Form Approved 03/05119
OMB No. 2040-0004
Presence or Absence
Intake
dbedcone
Effluent
(optional)
PollutantfParameter
Testing
Units
Maximum
Maximum
Long -Term
Long -
(and CAS Numbeq'rfavailable) ;
Required
Believed
Believed
i(spedfy)
Daily
Monthly
Average
Number
Term
Number
Present
Absent
Discharge
Discharge
Daily
of
Average
of
(required)
(davailable)
Discharge
Analyses
Value
Analyses'
;-. davailable)
4.7
3,4-benzofluoranthene
El
El
[a
Mass
Mass
(205-99-2)
4.8
Benzo (ghi) perylene
Concentration
Mass
(191-24-2)
4.9
Benzo (k) fluoranthene
El
IZI
Concentration
Mass
(207-08-9)
4,10
Bis (2-chloroethoxy) methane
EJ
Concentration
Mass
(111-91-1)
411
Bis (2-chloroethyl) ether
Concentration
Mass
(111-44-4)
4.12
Bis (2-chloroisopropyl) ether
El
11
✓❑
Concentration
Mass
(102-80-1)
4.13
Bis (2-ethylhexyl) phthalate
El
El
❑✓
Concentration
Mass
(117-81-7)
4.14
4-bromophenyl phenyl ether
El
El
ID
Concentration
Mass
(101-55-3)
4.15
Butyl benzyl phthalate
El
IZI
Concentration
Mass
(85-68-7)
4.16
2-chloronaphthalene
Concentration
Mass
(91-58-7)
4.17
4-chlorophenyl phenyl ether
El
❑
ED
Concentration
Mass
(7005-72-3)
4.18
Chrysene
El
❑
�
Concentration
Mass
(218-01-9)
4.19
Dibenzo (a,h) anthracene
Concentration
Mass
(53-70-3)
EPA Form 3510-2C (Revised 3-19) Page 7

NCR000138214
NC0005258
SGL Carbon LLC
001
Form Approved 03/05/19
OMB No. 2040-0004
Presence or Absence
Intake
chedrone
Effluent
(optional)
Pollutant/Parameter
Testing
Units
Maximum
Maximum
Long -Term
Lon
11(95-50-1),2-dichlorobenzene
(and CAS Number, if available)
Required
Believed
Believed
(specify)
Daily
Monthly
Average
Number
Term
Number
Present
Absent
Discharge
Discharge
Daily
Daily
of
Average
of
(required)
(if available)
Disc g a
Analyses
Value
Analyses
lif available
El✓❑
11
Concentration
Mass
1
4.21
13-dichlorobenzene
Concentration
Mass
(541-73-1)
422
14-dichlorobenzene
El
El
0
Concentration
Mass
(106-46-7)
4.23
3 3-dichlorobenzidine
El
El
IZI
Concentration
Mass
(91-94-1)
4.24
Diethyl phthalate
El
11
IZI
Concentration
Mass
(84-66-2)
425
Dimethyl phthalate
Concentration
Mass
(131-11-3)
426
Di-n-butyl phthalate
El
El
M
Concentration
Mass
(84-74-2)
427
24-dinitrotoluene
Concentration
Mass
(121-14-2)
428
2 6-dinitrotoluene
El
El
O
Concentration
Mass
(606-20-2)
429
Di-n-octylphthalate
Concentration
Mass
(117-84-0)
4.30
1,2-Diphenylhydra7ine
El
11
❑✓
Concentration
Mass
(as azobenzene) (122-66-7)
4.31
Fluoranthene
Concentration
Mass
(206-44-0)
4.32
Fluorene
El
El
0
Concentration
Mass
(86-73-7)
EPA Form 3510.2C (Revised 3-19) Page 8

% Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/0 /19
NCR000138214 I NC0005 I SGL Carbon LLC 1 001 OMB No. 2040-0004
TABLE B. TOXIC METALS, CYANIDE,
TOTAL PHENOLS,
AND ORGANIC TOXIC
POLLUTANTS (40 CIFR
122.21(g)(7)(v))'
Presence or Absence'
Intake
dieckone
Effluent
(optional):
Pollutant/Parameter
Testing
Units
Maximum
Maximum
Long -Term
Long-
_ (and CAS Number, if available)
Required
Believed
Believed
(Speaty)
Daily
Monthly
Average
Number
Term
Number
Present
Absent
Discharge
Discharge
Dail
of
of
Discharge
Analyses
AVaueverage
Analyses
rfavailable
4.33
Hexachlorobenzene
❑
❑
Concentration
Mass
(118-74-1)
4.34
Hexachlorobutadiene
El
F-1
Concentration
Mass
(87-68-3)
4.35
Hexachlorocyclopentadiene
El
IZI
Concentration
(77-474)
Mass
4.36
Hexachloroethane
❑
F1
Concentration
(67-72-1)
Mass
4.37
Indeno (1,2,3-cd) pyrene
✓❑
Concentration
(193-39-5)
Mass
4.38
Isophorone
ri
Concentration
(7859-1)
Mass
4.39
Naphthalene
El
RVConcentration
(91-20-3)
Mass
4.40
Nitrobenzene
El
El
R1
Concentration
Mass
(98-95-3)
4A1
N-nitrosodimethylamine
El
❑
Concentration
(62-75-9)
Mass
4.42
N-nitrosodi-n-propylamine
Concentration
(621-64-7)
Mass
4.43
N-nitrosodiphenylamine
❑
Concentration
(86-30-6)
Mass
444
Phenanthrene
11
El
F11
Concentration
(85-01-8)
Mass
4.45
Pyrene
El
110
Concentration
(129-00-0)
Mass
EPA Form 3510-2C (Revised 3-19)
Page 9

NCR000138214
NC0005258
SGL Carbon LLC
001
Form Approved 03/05/19
OMB No. 2040-0004
TOXICTABLE B. rE,
TOTAL PHENOLS,AND
ORGANIC TOXICPOLLUTANTSr
Presence or Absence
check one
Effluent
Intake
(optional)
Pollutant/Parameter
Testing
Units
`
Maximum
Maximum
Long -Term
Long -
(and
;(and CAS Number, if available)
Required
Believed
Believed
s e '
(v �+v)
Daily
Monthly
Average
Number
Tenn
Number
Present
Absent
Dirosgchaarrge
Drfschaarg)
Daily
of
Averagvalue
of
Discharge
Analyses
Analyses
davailable
4
1,2,4 trichlorobenzene
❑
El
O
Concentration
Mass
(120-82-1)
Section 5.Organic Toxic Pollutants (GCIMS'Fraction-Pesticides)
5.1
Aldnn
11
O
Concentration
Mass
(309-00-2)
5.2
a-BHC
El
El
ID
Concentration
Mass
(319-84-6)
5.3
P-BHC
Concentration
Mass
(319-85-7)
5.4
y-BHC
Concentration
Mass
(58-89-9)
5.5
&BHC
Concentration
Mass
(319-86-8)
5.6
Chlordane
Concentration
Mass
(57-74-9)
5.7
44'-DDT
Concentration
Mass
(50-29-3)
5.8
44'-DDE
❑
❑
0
Concentration
Mass
(72-55-9)
59
44'-DDD
Concentration
Mass
(72-54-8)
5.10
Dielddn
❑
Concentration
Mass
(60-57-1)
5.11
a-endosulfan
R]
Concentration
Mass
(115-29-7)
EPA Fan 35104C (Revised 3-19) Page 10

Number
NCR000138214
NC0005258
SGL Carbon LLC
001
Fonn Approved 03/05/19
OMB No. 2040-0004
•
PollutantlParameter
(and CAS Number,ifavallable)
(and
•
Testing;
Required
• r • •
Presence or Absence
check one
Units
(specify)
Effluent :
intake
(optional);
Believed
Present
Believed
Absent
Maximum
Daily
Discharge
(required)
Maximum
Monthly
Discharge
(davailable)
Long -Term
Average
Daily
Discharge
davailable
Number
of
Analyses
Long -
Tenn
Average
:Value
Number
of
Analyses'
5.12
(i-endosulfan
(115-29-7)
El
❑
Concentration
Mass
5.13
Endosulfan sulfate
(1031-07-8)
El
Concentration
Mass
5.14
Endnn
(72 20-8)
❑
❑✓
Concentration
Mass
5.15
Endnn aldehyde
(7421-934)
❑
Concentration
Mass
5.16
Heptachlor
(76-44.8)
0
❑
IZI
Concentration
i Mass
5.17
Heptachlor epoxide
(1024-57-3)
Concentration
Mass
5.18
PCB-1242
(53469-21-9)
0
Concentration
Mass
5.19
PCB-1254
(11097-69-1)
❑
❑
IZI
Concentration
Mass
5.20
PCB-1221
(11104-28-2)
❑
Concentration
Mass
5.21
PCB-1232
(11141-16-5)
❑
❑
O
Concentration
Mass
5•22
PCB-1248
(12672-29-6)
❑
❑
O
Concentration
Mass
5.23
PCB-1260
(11096-82-5)
Concentration
Mass
5.24
PCB-1016
(12674-11-2)
❑
❑
Concentration
Mass
EPA Form 3510-2C (Revised 3-19) Page 11

NCR000138214
NC0005258
SGL Carbon LLC
001
Form Approved 03/05/19
OMB No. 2040-0004
Presence or Absence
Intake
cfied one
Effluent
(optional'
PollutantlParameter
Testing
Units
Maximum
Maximum
Long -Term
(and CAS Number, 'rfavailable)
Required
Believed
Believed
(specify)
Daily
-
Monthly
Average
NumberLon
Term
Term
Number
Present
Absent'
Discharge
Disc
aily
Discharge
of
Analyses
Averag
of
Analyses
valable)
rfavailable
Vauee
Toxaphene
5.25
❑
Concentration
Mass
(8001-35-2)
1 Sampling shall be conducted according to sufficiently sensitive test procedures (i.e., methods) approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or
required under 40 CFR chapter I, subchapter N or 0. See instructions and 40 CFR 122.21(e)(3).
EPA Form 3510.2C (Revised 3-19) Page 12

EPA Identification Number NPDES Permit Number Facility Name Outrall Number Form Approved 03105119
NCR000138214 NC0005258 SGL Carbon LLC 001 OMBNo.2040-0004
Presence or Absence Intake
check one Effluent Orton
jOptionaq
Units
llutant Maximum Long -Tenn
Believed' Believed (spe*) Maximum Daily Monthly Average Daily Number of Long -Term Number of
F—Chprk
Present Absent Discharge Discharge Discharge Anatyses Average Anatyses
'(required) rfavailable `iiavailable ValUe<
here if you believe all pollutants on Table C to be present in your discharge from the noted outfall. You need not complete the "Presence or Absence" column of Table C for
each pollutant.
❑ Check here if you believe all pollutants on Table C to be absent in your discharge from the noted outfall. You need not complete the "Presence or Absence' column of Table C for
each pollutant.
1'
Bromide
❑
❑
Concentration
(24959-57-9)
Mass
2
Chlorine, total
❑
El
Mass
Mass
residual
3.
Color
❑
El
Concentration
Mass
4.
Fecal col form
El❑
ConcentrationMass
5
Fluoride
❑
❑
Concentration
(169e4-49-8)
Mass
6
Nitrate -nitrite
El
El
Concentration
Concentration
7.
Nitrogen, total
El
❑
Concentration
organic (as N)
Mass
8.
Oil and grease
❑
❑
Concentration
Mass
g
Phosphorus (as
❑
❑
Concentration
Mass
P), total (7723-14-0)
10.
Sulfate (as SO4)
❑
❑
Concentration
(148o&79-8)
Mass
11.
Sulfide (as S)
❑
❑
Concentration
Mass
EPA Form 3510-2C (Revised 3-19) Page 13

EPA Identification Number - -- NPDES Permit Number Facility Name Oudall Number Form Approved 03/05/19
NCR000138214 NC0005258 SGL Carbon LLC 001 OMB No. 2040-0004
Presence or Absence 'Intake
(check one Effluent
(OPtiona9
Units
Pollutant Maximum Long -Term
Believed Believed (speaty) MazimumDaityi Long -Term
Monthly Average Daily 'Nu of
Present Absent Discharge Average AnaNumlyses
Analysber es s
Discharge Discharge Analyses Anatyses
:(required) available) davailable Values
12
Sulfite (as S0s)
❑
Concentration
(14265-053)
Mass
13.
Surfactants
Concentration
Mass
14
Aluminum, total
❑
Concentration
(2429-905)
Mass
15.
Barium, total
Concentration
(744039-3)
Mass
16.
Boron total
El
M
Concentration
(7440-42-8)
Mass
17
Cobalt total
❑
❑
Concentration
(7440484)
Mass
18
Iron total
F1
Concentration
(7439-8H)
Mass
19.
Magnesium, total
Concentration
(7439 95v4)
Mass
Molybdenum,
Concentration
20.
total
439-98-
Mass
21
Manganese, total
El
El
Concentration
(7439-96-5)
Mass
22
Tin total
El
El
Concentration
(7440-315)
Mass
23
Titanium, total
❑
Concentration
(744032-6)
Mass
EPA Form 3510-2C (Revised 3-19) Page 14

EPA Identification Number
NPDES Permit Number
Facility Name
Outfall Number
Form Appmved 03/05/19
NCR000138214
NC0005258
SGL Carbon LLC
001
OMB No. 2040-0004
Presence or Absence
Intake
check one
Effluent
:.(Optionao
Pollutant
Believed
Believetl
Units
(spedty)
Maximum Dail y
Maximum
Long -Term
Lon -Term
g
Present
Absent
Discharge
Monthly
Average Daily iNumber of
Numberof'
Average
'.(required)
Discharge
Discharge
Discharge Analyses
Ddava0able
analyses '
V81U0'
24.
Radioactivity
Alpha, total
❑
❑
Concentration
Mass
Beta, total
❑
❑
Concentration
Mass
Radium, total
❑
El
Concentration
Mass
Radium 226, total
❑
❑
Concentration
Mass
r Sampling shall be conducted according to sufficiently sensitive test procedures (i.e., methods) approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or
required under 40 CFR chapter I, subchapter N or 0. See instructions and 40 CFR 122.21(e)(3).
EPA Form 3510.2C (Revised 3-19) Page 15

EPA Identificallon Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NCR000138214 NC0005258 SGL Carbon LLC 001 OMB No. 2040-0004
r
Presence or Absence
Pollutant check ne Reason Pollutant Believed Present in Discharge Available Quantitative Data
Believed- Believed (specify un'ds)
Present 1 Absent
1.
Asbestos
❑
2.
Acetaldehyde
❑
3.
Allyl alcohol
❑
❑✓
4.
Allyl chloride
❑
z
5.
Amyl acetate
❑
❑✓
6.
Aniline
❑
❑�
7.
Benzonitrile
❑
❑✓
8.
Benzyl chloride
❑
❑✓
9.
Butyl acetate
❑
❑�
10.
Butylamine
❑
❑✓
11.
Caplan
❑
z
12.
Carbaryl
❑
13.
Carbofuran
❑
14.
Carbon disulfide
❑
15.
Chlorpyrifos
❑
16.
Coumaphos
❑
❑✓
17.
Cresol
❑
❑�
18.
Crotonaldehyde
❑
❑✓
19.
Cyclohexane
❑
❑�
EPA Form 3510-2C (Revised 3.19) Page 16

EPA Identification Number NPDES Permit Number Fadrdy Name Outfall Number Form Approved 03105/19
NCRnon[L3R2.1a NC0005258 SGL Carbon LLC 001 OMB No. 2040-0004
r r•
TI• .r
Presence or Absence
check one
Reason Pollutant Believed Present in Discharge
Available Quantitative Data
(spe*units)
Pollutant
Believed
Present
Believed
Absent
20.
2,4-D (2,4-dichlorophenoxyacetic acid)
❑
0
21.
DIaZJnOn
❑
❑�
22.
Dicamba
❑
23.
Dichlobenil
❑
24.
Dichlone
❑
25.
2,2-dichloropropionic acid
❑
❑✓
26.
Dlchlorvos
❑
❑✓
27.
Diethyl amine
❑
W, 1
28.
Dimethyl amine
❑
❑✓
29.
Dintrobenzene
❑
❑�
30.
Diquat
❑
❑✓
31.
Disulfoton
❑
32.
Diuron
❑
❑✓
33.
Epichlorohydrin
❑
❑✓
34.
Ethion
❑
❑✓
35.
Ethylene diamine
❑
36.
Ethylene dibromide
❑
❑✓
37.
Formaldehyde
❑
❑✓
38.
1 Furfural
❑
❑✓
EPA Forth 3510-2C (Revised 3-19) Page 17

EPA Identification Number NPDES Permit Number Facft Name Oudall Number Form Appmveo 03lub/19
NCR000138214 N00005258 SGL Carbon LLC 001 OMB No.2040-0004
•r• ttt
Presence or Absence
checkone Available Quantitative Data
Pollutant Reason Pollutant Believed Present in Discharge
Believed ' Believed (spediy boils)
Present Absent
39.
Guthion
❑
40.
Isoprene
❑
rV1
41.
Isopropanolamine
❑
El
42.
Kelthane
❑
43.
Kepone
❑
44.
Malathion
❑
❑✓
45.
Mercaptodimethur
❑
0
46.
Methoxychlor
❑
❑�
47.
Methyl mercaptan
❑
❑✓
48.
Methyl methacrylate
❑
❑�
49.
Methyl parathion
❑
0
50.
Mevinphos
❑
✓❑
51.
Mexacarbate
❑
❑�
u yane
t
tM�onuon�ethyl"a"mine
❑
❑✓
54.
1 Naled
❑
❑✓
55.
Naphthenic acid
❑
0
56.
Nitrotoluene
❑
❑�
57.
Parathion
❑
0
EPA Form 3510.2C (Revised 3-19) Page 18

EPA Identification Number NPDES Permd Number Fad Name Outfall Number Form Approved 03/05/19
NCROODIRS214 NC0005258 SGL Carbon LLC 001 1 OMB No. 2040-0004
Presence or Absence
deck one
I Reason Pollutant Believed Present in Discharge
Available Quantitative Data
(spedyunits)
Pollutant
Believed
Present '
Believed
Absent
58. Phenolsulfonate
❑
❑✓
59.
Phosgene
❑
❑�
60.
Propargite
❑
❑✓
61.
Propylene oxide
❑
✓❑
62.
Pyrethrins
❑
❑�
63.
1 Quinoline
❑
❑✓
64.
Resorcinol
❑
ID
65.
Strontium
❑
0
66,
Strychnine
❑
❑✓
67.
Styrene
❑
❑✓
68
2,45-T(2,4,5-tdchlorophenoxyacetic
acid
❑
0
69.
1 TDE (tetrachlorodiphenyl ethane)
❑
❑✓
70
2,4,5-TP [2-(2,4,54dchlorophenoxy)
ro anoic acid]
❑
0
71.
Trichlorofon
❑
❑✓
72.
Triethanolamine
❑
❑✓
73.
Triethylamine
❑
M
74.
Trimethylamine
❑
r7l
75.
Uranium
❑
76.
Vanadium
❑
❑✓
EPA Form 3510.2C (Revised 3-19) Page 19

EPA Identification Number
NPDES Permit Number Facility Name OutfaU Number
Form Approved 03/05/19
NCR000138214
NC0005258 SGL Carbon LLC 001
OMB No. 2040-0004
Presence or Absence
Pollutant
checkone Reason Pollutant Believed Present in Discharge
Available Quantitative Data
Believed Believed
(Spedfy unb)
r78.Xylene
Present Absent
cetate
❑
❑�
❑
79.
Xylenol
❑
0
80.
1 Zirconium
❑
❑✓
1 Sampling shall be conducted according to sufficiently sensitive test procedures (i.e., methods) approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or
required under 40 CFR chapter 1, subchapter N or 0. See instructions and 40 CFR 122.21(e)(3).
EPA Form 3510.2C (Revised 3-19) Page 20

EPA Form 3510-2C (Revised 3-19) Page 21

SGL Carbon LLC
Morganton NPDES Data
NPDES Data Summarized by Month - Discharge Up Stream Downstream
Flow (MGD)
Temp C
pH
Cl
TSS
TOX
Cu
TOT Hard
Lead
FOG
Se
TOT Hard
Temp
Temp
Dec-22:
0.425 :.
13.595:
6.2
6
- 1.5
:Pass.
_0.003
..... 24
0
20 -
7.65 '.I
-8.165
Nov-22
0.5
17.1 -
6.3
7
-. 0
0
11.53
-11.89 -..
Oct-22
0.3
20.0.-
6.2
4.4
- 0
-0
15.6-,
16.04
Sep-22
0.4
20.7 ::
6.2
0
0
Pass
0-.
19.27
19.6
Aug-22
0.4
23.9 -
6.2
: 5.6
'. 2
0
20.53 ',
.. 21
Jul-22
0.4
20.4 -
6.7
0
0
0.004
20
0
0
0.026
':24
-18.35 -
-18.565
Jun-221
0.4
20.2 -:
0.07
0
0
1 Pass
0
16.31:.
16.53-
May-22
0.6
18.9
6.5
1 5
0
0.003
20
0
20
15.52 -:
-15.7
Apr-22
0.3
15.3 :
6.6
6.5
0
4.75
11.89 -
12.12
Mar-22
0.7
13.6
6.5
0
: 0
iPass
2.5
10.6 -
:. 10.86
Feb-22-
0.3
10.5
6.5
0
: 0
0.002
18
-0
18
7.53
7.66
Jan-22
0.4
11.9
6.7
- 4.6
0
0
6.5
6.83
Dec-21:
0.3
13.7 :
6.7
: 5
=. 0
:Pass
0
7.76
7.97
Nov-21
0.3
18.5
6.5
0
- 0
0146
206
0 ::
0
0
21.5
1 9.75 ':
9.88
Oct-21
0.3
24.5
6.7
6.75
0
0
15.455
15.64 `-
Sep-21
'. 0.31
18.3
6.6
- 6.25
=-. 0
:Pass
0.00146
225
0.65 :
21.3
18.35
18.5 =:
Aug-21
0.45
21.33
6.6
:: 8.8
0
0.65 ::
19.94 ':
20.04
Jul-21
0.28
21.92
6.6
0
' 0
0.6
20.65
20.75
Jun-21
0.21
20.51
6.6
0
+ 0
tPass
0.00203
20.4
0
18
17.81 :
17.9
May-21
0.24
18.4
6.6
0
0
0
16.435 :
16.28
Apr-21'
0.28
15.88
6.5
0
'. 0
3A
13.404 ':
13.1 i
Mar-21'
0.36
13.38
6.5
li SA
3 0
±Pass
0.00306
21.2
0.06
17.3
1 10.48 -
10.21 ".
Feb-21
'. 0.41
10.27
6.5
= 6
s 0
0
7.07 :.
6.85
Jan 21
0.52
11.61
6.6
'. 0
:: 0
0
6.67
6.96
Dec-20
0.32
13.7
6.5
0
D
Pass
0.002
-.20.4
0
0.65
0
15.1
;7.93
,: 7.8
Nov-20
0.1
,18.22
6.5
0
0
0.6
511.54
INV
Oct-20
0
20.165:
6.5
0
0
0.65
_.15.8
16.025
Sep-20
0.11
-22.49
6.5
5.5
0
,Pass
-.0.002
-23.4
0.65
18.7
19.41_.
19.59
Aug-20
0.25
22.37
6.6
0
0
0-:.
21.14-
21.32.
Jul-20
0.39
23.21-::
6.6
11.25
- 0
0
20.72
20.9
Jun-20
0.38 -
20.SS
6.6
10.6
0
.Pass
0
21.7
0
16.3
17.99 L
-:18.18
May-20
0.41
-19.49
6.6
5.75
0
__0
14.63 :-
:14.81
Apr-20
0.633
16.65 -.
6
: 0
0
0.6
13.02
1121
Mar-20
-0.4
14.79 ..
6.7
- 0
0
.Pass
0.6
11.96:-
12.2
Feb-20
1.19
13.49
5.9
0
0
0
10.1
0
14.5
9.48
9.71
Jan-20
1
13.89
6.5
0
0
-0
8.25
8.45

SGL Carbon LLC
Morganton NPDES Data
NPDES Data Summarized by Month - Discharge up stream Downstream
Flow (MGD)
Temp C
pH
Cl
TSS
TOX
Cu
TOT Hard
Lead
FOG
Se
TOT Hard
Temp
Temp
Dec-19
r 0.82
14.815
is 6.6
4.4
0
:Pass
0
8.735
8.92
Nov-19
! 0.63
18.82
6.6
% 5.25
:. 0
i0
24.7
0 =
0
0
20.9
10.13
10.54
Oct-19
0.7
24.35
6.6
6.25
0
0
16.1
17
Sep-19
0.44
26.23
6.7
- 9
0
:Pass
0
168
0
16.4
17.51
20.1
Aug 19
0.3
24.2
6.6
= 0
: 0
0
19.36
21.08 '
Jul 19
0.5
24.3
" 6.6
€ 15.2
0
0
20.22
21
Jum-191
0.3
23.13
1 6.7
1 5.75
: 0
Pass
1 0
16.3
1
0
15.3
18.66 '-
18.84 '.
May-19
'' 0.38
21.24
6.6
7
: 6.1
0
17.01 -
17.37 r
Apr-19
£ 0.68
18.19
6.5
a 12.8
: 0
0
14.08 r
15
Mar-19
0.58
14.68
6.6
:: 6
-: 0
.Pass
0
13':
0
11.1
9.25 ':
9.35
Feb-19
S 0.71
12.58
6.5
" 0
'r 0
0
9.04
8.97
Jan-19
0.8
12.58
s 6.5
8.8
0
0.5
7.95
8.18
Dec-18
- 1.11
13.07
6.5
0
0
- Pass
-0
7.87
8.04
Nov-18
1.74
16.72
6.5
5.75 -
2.7
0.011
34.8
0
21.2
11.38
- 11.69
Oct-18
1.31
23.68 -.
6.5
4.8
0
0
16.43
16.96
Sep-18
- 1.72
25.05 '
6.5
18.25
0
-'Pass
0.012
21.1
0
21.068
,21.96
Aug-18
1.02
24.97
6.6
0
0
0
20.93
21.43
Jul-18
0.8
23.95
6.4
5
--3.15
0
21.62
":21.92
Jun-18
1.47
23.66
6.5 .
6.25
- 0
Pass
0.01
19.8
0
0
0
14.1
..19.9
20.25
May-18
: 0.89
:21.27
6.5
0
0
0
17.76 1
18.11
Apr-18
1.015
16.55
6.7
5.75
7
7
,13.205
13.745
Mar-18
0.83
- _13.58
7.2
950 r.
0
.Pass
0.002
16.6 -'
0
9.88 '.c
10.41
950. = Reported Equipment issues