NCS000040_Renewal application_20230731

CHARL40TTE
PIPE and FOUNDRY COMPANY
P.O. Box 35430 • Telephone [phone]
CHARLOTTE, NORTH CAROLINA 28235
July 27, 2023
Brianna Young
1612 Mail Service Center 1�11 1 4 tit
Raleigh, NC 27699-1612 �1
RE: Individual Stormwater Permit Renewal Application
Charlotte Pipe & Foundry Company
Permit Number NCS000040
Dear Ms. Young,
Please find included with this cover letter the Individual Stormwater Permit
renewal application for Charlotte Pipe and Foundry located in Charlotte, NC.
The following is included and has been sent to your attention via email:
• Completed NC DEQ Certification Form,
• Completed EPA Form 1 with attachments,
• Completed EPA Form 2f with attachments, and
• Completed NC DEQ Supplemental Information Form with
attachments.
Please contact Jenny Pappalardo at [phone] or David Waggoner at
[phone] if you have any questions or need any additional information.
Sincerely,
Jenny L. Pappalardo
Charlotte Pipe and Foundry Co.
Environmental Department

STORMWATER POLLUTION PREVENTION PLAN
DEVELOPMENT AND IMPLEMENTATION
CERTIFICATION
North Carolina Division of Energy, Mineral, and Land Resources-- Stormwater Program
La, � L-
Facility Name: Charlotte Pipe&Foundry Company _
Permit Number: NCSooas40
l o
Location Address: 1335 South Clafton Street 17, G'5
Charlotte,NC 28208
County: MgckEenhurg ""^� �.j]
"I certify, under penalty of law, that the Stormwater Pollution Prevention Plan (SPPP) document and all
attachments were developed and implemented under my direction or supervision in accordance with a system
designed to assure that qualified personnel properly gather and evaluate the information required by the SPPP.
Based on my inquiry of the person or persons who manage the system, or those persons directly responsible
for gathering the information, the information gathered is, to the best of my knowledge and belief, true,
accurate and complete."
And
"I certify that the SPPP has been developed, signed and retained at the named facility location, and the SPPP
has been fully implemented at this facility location in accordance with the terms and conditions of the
stormwater discharge permit."
And
"I am aware that there are significant penalties for falsifying information, including the possibility of fines and
imprisonment for knowing violations."
Sign (according to permit signatory requirements) and return this Certification, DO NOT
SEND STORMWATER POLLUTION PREVENTION PLAN WITH THIS CERTIFICATION.
Signature A-w Date 4-3
Mike Hall VP of Cast iron Operations
Print or type name of person signing above Title
SPPP Certification 10113

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03105119
110000349267 NCS000040 Charlotte Pipe&Foundry OMB No.2040.0004
Form U.S.Environmental Protection Agency
1 \—.EPA Application for NPDES Permit to Discharge Wastewater
NPDES GENERAL INFORMATION
SECTIONPD r
1.1 Applicants Not Required to Submit Form 1
Is the facility a new or existing publicly owned Is the facility a new or existing treatment works
1.1.1 treatment works? 1.1.2 treating domestic sewage?
If yes,STOP.Do NOT complete 0 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,
E operation or a concentrated aquatic animal commercial,mining,or silvicultural facility that is
a- production facility? currently discharging process wastewater?
o ❑ Yes 4 Complete Form 1 ® No Yes 4 Complete Form No
a and Form 2B. 1 and Form 2C.
z
1.2.3 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?
Cr ❑ Yes 4 Complete Form 1 0 No Yes 4 Complete Form No
and Form 2D. 1 and Form 2E.
N
61 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).
SECTIONDD• 1
2,1 Facility Name
Charlotte Pipe&Foundry Company
0 2.2 EPA Identification Number
U
0 110000349267
2.3 Facility Contact
Name(first and last) Title Phone number
David Waggoner Technical Director [phone]
Q
Email address
:R [e-mail]
2.4 Facility Mailing Address
cc E Street or P.O.box
z
1335 South Clarkson Street
City or town State ZIP code
Charlotte INC 2=8
EPA Form 3510-1(revised 3-19) Page 1

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03105/19
110000349267 NCS000040 Charlotte Pipe&Foundry OMB No.2040-0004
2.5 Facility Location
2 Street,route number,or other specific identifier
a 1335 South Clarkson Street
o County name County code(if known)
Mecklenburg
City or town State ZIP code
z Charlotte NC 28208
SECTION1 NAICS CODES1
3.1 SIC Code(s) Description(optional)
3321 Gray Iron Foundries
a�
0
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3.2 NAICS Code(s) Description(optional)
ego 331511 Iron Foundries
U
332996 Fabricated Pipe and Pipe Fitting Manufacturing
4.1 Name of Operator
Charlotte Pipe&Foundry Company
0 4.2 Is the name you listed in Item 4.1 also the owner?
0
® Yes ❑ No
L 4.3 Operator Status
0
2 ❑ Public—federal ❑ Public—state ❑ Other public(specify)
Q ® Private El (specify)
4.4 Phone Number of Operator
[phone]
4.5 Operator Address
Street or P.O.Box
E 1335 South Clarkson Street
c City or town State ZIP code
o a Charlotte NC 28208
i4 U
CL Email address of operator
O [e-mail]
SECTION1 1 I
0 -0 5.1 Is the facility located on Indian Land?
❑ Yes ® No
EPA Form 3510-1(revised 3-191 Page 2

EPA Identification Number NPDES Permit Number Facility Name Form Approved 031D5119
110000349267 NC5000040
Charlotte Pipe&Foundry OMB No.2040-0004
ENVIRONMENTALSECTION 6.EXISTING I CFR 122.21(ffl6))
6.1 Existing Environmental Permits(check all that apply and print or type the corresponding permit number for each)
❑✓ NPDES(discharges to surface 10 RCRA(hazardous wastes) ❑ UIC(underground injection of
o water) fluids)
NCS000040 28208CHRLT13355
ry ® PSD(air emissions) ❑ Nonattainment program(CAA) NESHAPs(CAA)
NGMECO626 NCMECO626
❑ Ocean dumping(MPRSA) ❑ Dredge or fill(CWA Section 404) ❑ Other(specify)
LU
7.1 Have you attached a topographic map containing all required information to this application?(See instructions for
C specific requirements.)
® Yes ❑ No ❑ CAFO—Not Applicable(See requirements in Form 213.)
SECTION1
8.1 Describe the nature of your business.
Gray iron foundry manufacturing soil pipe and fittings.
N
N
d
C
.y
7
ca
O
3
Z
SECTIONOO 1
9.1 Does your facility use cooling water?
0 Yes ❑ No -+ SKIP to Item 10.1.
a 9.2 Identify the source of cooling water.(Note that facilities that use a cooling water intake structure as described at
:: 2 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.)
a Cooling water does not consist of stormwater nor is cooling water discharged to surface waters.
c
I VA RIANCE REQUESTSI I
10.1 Do you intend to request or renew one or more of the variances authorized at 40 CFR 122.21(m)?(Check all that
N apply.Consult with your NPDES permitting authority to determine what information needs to be submitted and
when.)
C ❑ Fundamentally different factors(CWA ❑ Water quality related effluent limitations(CWA Section
Section 301(n)) 302(b)(2))
❑ Nan-conventional pollutants(CWA ❑ Thermal discharges(CWA Section 316(a))
M Section 301(c)and(g))
0 Not applicable
EPA Form 3510-1(revised 3-19) Page 3

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03105/19
110000349267 NCS000040 Charlotte Pipe&Foundry OMB No.2040-0004
SECTION 11.CHECKLIST 1 1
11.1 In Column 1 below,mark the sections of Form 1 that you have completed and are submitting with your application.
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 ❑ wl attachments
® Section 2:Name,Mailing Address,and Location ❑ wl attachments
® Section 3:SIC Codes ❑ wl attachments
® Section 4:Operator Information ❑ wl attachments
® Section 5:Indian Land ❑ wl attachments
® Section 6: Existing Environmental Permits ❑ wl attachments
w
E wl topographic
® Section 7:Map ® map 0 wl additional attachments
U)
a ® Section 8:Nature of Business ❑ wl attachments
0 Section 9:Cooling Water Intake Structures ❑ wl attachments
d
U ® Section 10:Variance Requests ❑ wl attachments
a
c
y ® Section 11:Checklist and Certification Statement ❑ wl attachments
a 11.2 Certification Statement
s
U
t certify under penalty of taw that this document and all attachments were prepared under my direction or supervision
in accordance with a system designed to assure that qualified personnel properly gather and evaluate the
information submitted.Based on my inquiry of the person or persons who manage the system,or those persons
directly responsible for gathering the information, the information submitted is, to the best of my knowledge and
belief, true, accurate,and complete, 1 am aware that 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
Mike Hall VP of Cast Iron Operations
Signature Date signed
f . P T 3
EPA Form 3510-1(revised 3-19) Page 4

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4' OUTFALL LAT LONG
A 35.223811 N -80.864227 W ��x`� , ,' :;
B 35.223895 N -30.862312 W i
C 35.224070 N -80.860025 W
.. ! - ..- `.�. i•r'��. f� .... �� `.3}zr-+' 1�FE � :. �2 3 -�' ..e � rho - •_e���'i..)ti�..
N
0 0.2 0.4 0.6 0.8 1 and
OURCE: CHARLOTTE WEST, NC 7.5 MINUTE TOPOGRAPHIC QUADRANGLE, 1991
CHARUOTTE SITE LOCATION MAP Figure
PIPE and FOUNDRY COMPANY 1335 SOUTH CLARKSON STREET
CHARLOTTE,NORTH CAROLINA

ortwwir.c NUMeert
34-�2
IPTR
1. RB101EDWAOFARFA'AORTIE OTNA SIX 0` RON OIRTC7NAIOFSi0R11W119t RAW
2 RBA0IED SIX OFARHMONTIEOTIER SIX OF10000 +•s. cranam serene 40'
1 OTWIO®wWESdIORAAT S - L0GAT0iOFS7=MTERWrFA115
4. EIRIMAREAIATMLOT . ."
S. ADOEOWTFALLW
t ADDEDODIFALLI)MALDOXIMTEM1101I n r- ;
7. AOO WIFAILOGS L-_- T OUTFALL LATITUDE—LONGITUDE
t AOOB)000'AILVA F •' _
-� OLD001 35'13'28"N 8T51'50V
OLD002 351329'N 80'5114699
M OLD002A 35'1737'N 80'51'47V
a OLD ON 35'1127"N 80'51mv
OLD065 35'13'2rN •80'5141V
3 T e OLD 005A 35'112r'N V5140V
OLD006A 35'13'33'N 80'51'45W
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a _ A 35223811N •80.664271W
B 35123895N 80.862312IN
„' �.'-- �. \ • 1 ��r ___ C 35224070N •80.860025W F
`"`a'Y.-- •v— �' ' ' 3 � �' AREA PERCENT
(ACRES) NPERNOUS
AREA I 9.19 50%
t _ , W -, AREA II 290 95%
- t , w- -_ • _ II ,¢ (i AREA III 3.33 85%
AREAN 10.23 95%
AREAV 128 95%
4b AREAVI 8.14 85%
`d•`,d AREANI 1250 95%
;
v
OUTFALL POTENTIAL POLLUTANTS F
t T _..e_.��=�•t METHS,CiEMiCA1RESID1E5,gLtGRFASE
y1 _ a t"•— pLDaQ METALS,CHEMICAL RESMS,OIL&GREASE
OLD ONA METALS,CHEMICAL RESIDUES,OIL dGREASE _
OLD004 METALS,CUM RESIOLES,OIL&GREASE
-a Q METALS CHEMICAL RESIDUES,OIL&GREASE
,�; - n �` / e. n•L ` �� �� q a W>� d``w OLD 005 METALS:MICALRESIDUES,OIL&GREASE
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—
T- OLD 006 E
METALS,CR01M'ALRESIDIIES,OIL 9GREASE
;A r t - \! "I.. �--•- y OLD 006A PROPOSED METALS,CWWCALRESMILES,OL&GREASE
8 .$ - •� '"• .� t �• ALL A METALS,CHEWCALREWLES,OIL&GREASE
i ! \
� B METALS,CIEWCAI.PESAl1.ES,CldGREASE
METALS,CIEMICALRESIDUES,OLIGREASE
OLD
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1 S `\ "•. i `T 8g» S1O0�L \DeSSwool
1} •t' OLD
W006(Nwoos 8
SA r e t
SCALE
f. n A 0' too* 200'
OLD OUTFACE
_Sw002A
1
2
I \
i WI6 Revised is Noted
e. RE,
DATE DESCRUMON
LIMITS UNLESS OTHERWISE SPECIFIED
FRACTIONS} 1/64 DEC.FRACTIONS} .01 ANGLES}30'
DECIMALS}.005 SURFACE nNISH 125 R.M.S.
e CHARLOTTE PIPE AND FOUNDRY CO.
1335 SOUTH CLARKSON STREET
CHARLOTTE, NORTH CAROUNA I CAST IRON F
TITLE Environmental SILEve
SCALE DR BY DID o wirtc.uueErt
DATE 4-29-2015 CK V �34"I2

EPA Identification Number NPDES Permit Number Facility Name Farm Approved 03105119
110000349267 NCS000040 Charlotte Pipe&Foundry OMB No.20404004
Form U.S Environmental Protection Agency
2F EPA Application for NPDES Permit to Discharge Wastewater
NPDES STORMWATER DISCHARGES ASSOCIATED WITH INDUSTRIAL ACTIVITY
SECTION 1.OUTFALL LOCATIONi
1.1 Provide information on each of the facili 's ouffalls in the table below
Outfall Receiving Water Name Latitude Longitude
Number
A Irwin Creek 35' 13' 25.72" N 80, 51, 51.22" W
C
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;a B Irwin Creek 35' 13' 26.02" N 80' 51' 44.36" W
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C Irwin Creek 35° 13' 26.65" N 80' 51' 36.09" W
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SECTI
ti r ,
2.1 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 0 No 4 SKIP to Section 3.
22 Briefly identify each applicable project in the table befiow.
Brief Identification and Affected Outfalls Final Compliance Dates
Description of Project (list outfall numbers) Source(s)of Discharge
Required Projected
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E
a
a
0
n.
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2.3 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 0 No
EPA Form 3510.2F(Revised 3-19) Pagel

EPA identification Number NPDES Permit Number Facility Name Form Approved 03105119
110000349267 NCS000040 Charlotte Pipe&Foundry OMB No.2040-0004
SECTION 3.SITE 1' i
C 3.1 Have you attached a site drainage map containing all required information to this application?(See instructions for
CD W S specific guidance)
© ® Yes ❑ No
SECTION 4. •• i
4.1 Provide information on the facility's pollutant sources in the table below.
Outfall Impervious Surface Area Total Surface Area Drained
Number (within a mile radius of the facility) (within a mile radius of the facility)
specify units specify units
A 9•72 acres 10.23 acres
specify units specify units
B 4.7 acres 8.14 acres
specify units specify units
C 11.9 acres 12.5 acres
specify units specify units
specify units specify units
specify units specify units
4.2 Provide a narrative description of the facility's significant material in the space below.(See instructions for content
requirements.)
y See Attached Section 4.2
m
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Q
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Id
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4.3 Provide the location and a description of existing structural and non-structural control measures to reduce pollutants in
stormwater runoff. See instructions fors ecifcguidance.)
Stormwater Treatment
Codes
Outfall from
Number Control Measures and Treatment Exhibit
2F-1
(list)
A-C Roof drains,sheet now on impervious surfaces and underground transport 4A
A-C Drain filter inserts to capture solids around main processing areas 1Q
EPA Form 3510-2F(Revised 3-19) Page 2

Form 2F,Section 4.2
Stormwater drainage at the facility is from roof areas,asphalt parking areas,gravel paved areas,loading/
unloading areas,material storage areas,and grass areas. Stormwater flows into storm drains located throughout
the paved and landscaped areas of the property. Stormwater run-off flows overland and/or through underground
storm sewers to the west towards Irwin Creek. The following storage areas are located outside:
• One 15,000-gallon hot dip storage tank is located on an asphalt-paved surface south of the main
building. The tank is provided with secondary containment in the form of an open-top containment area
concrete sump. The sump is approximately 23.2 feet by 17.4 feet by 5 feet,which equates to an
approximate storage capacity of 2,018ft3,or approximately 15,097 gallons. Spilled material collected
within the containment area is removed and disposed of in accordance with applicable regulations.
• One 50-ton sand silo is located west of the main production building. In addition,one feldspar silo is
located south of the waste treatment building. The silo is not equipped with secondary
containment. However,since the contents are not liquid,spilled material will be easily cleaned up and
should not impact stormwater.
• One 550-gallon used oil storage tank is located on an asphalt-paved surface south of the Oil House. The
tank is provided with secondary containment in the form of metal walls. The containment area is
approximately 4 feet X 6 feet X 2 feet,which equates to an approximate storage capacity of 48 ft3, or
approximately 359 gallons. Spilled material collected within the containment area is removed and
disposed of in accordance with applicable regulations.
• One 10,000-gallon gasoline storage double walled tank and one 10,000-gallon diesel storage double
walled tank are located on an asphalt-paved surface near the northeast corner of the property. The tanks
are provided with secondary containment in the form of concrete walls. The containment area is
approximately 30 feet by 30 feet by 3 feet,which equates to an approximate storage capacity of 2,700 ft3,
or approximately 20,200 gallons. Spilled material collected within the containment area is removed and
disposed of in accordance with applicable regulations.
• One fueling station with four pumps is located on an asphalt-paved surface near the northeast corner of
the property. The fueling station is covered and equipped with an emergency shut off valve. The fueling
station is provided with secondary containment in the form of a trench drain. Spilled material collected
within the containment area is removed and disposed of in accordance with applicable regulations.
• Oil drums are stored under cover outside the Oil House. The area is not equipped secondary containment
or with a berm.
• Materials are stored in totes and drums in a covered shed located at the northeastern portion of the
facility. The entrance to the shed is equipped with an asphalt berm to minimize the potential impact of
spills on Stormwater.
• Materials are stored in totes and drums in a covered shed located at the southeastern portion of the
facility. This area is not equipped with a berm.
• Two totes of oil are stored on the ground without secondary containment in the shell core unloading
area.

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03105119
110000349267 NCS000040 Charlotte Pipe&Foundry OMB No.2040-0004
SECTION 5.NON STORMWATER DISCHARGES I
5.1 1 certify under penalty of taw that the oulfall(s) covered by this application have been tested or evaluated for the
presence of non-stormwater discharges. Moreover, t certify that the outfalls identified as having non-stormwater
discharges are described in either an accompanying NPDES Form 2C,2D,or 2E application.
Name(print or type first and last name) Official title
Mike Hall VP of Cast Iron Operations
Signature Date signed
CD
O �� 7,,77,,9
rn 5.2 Provide the testing information requested in the table below.
Outtall Onsite Drainage Points
n Number Description of Testing[Method Used Date(s)of Testing Directly Observed
During Test
is
NA
0
SECTION 6.SIGNIFICANT LEAKS
in
0
z
OR SPILLS(40 1
6.1 Describe any significant leaks or spills of toxic or hazardous pollutants in the last three years.
'Ln Charlotte Pipe has not experienced any significant leaks or spills of toxic or hazardous pollutants in the last three years.
.a
0
Y
J
C
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SECTION 7,DISCHARGE INFORMATION1
See the instructions to determine the pollutants and parameters you are required to monitor and,in turn,the tables you must
o com lete.Not all applicants need to complete each table.
7.1 Is this a new source or new discharge?
o ❑ Yes 4 See instructions regarding submission of 0 No 4 See instructions regarding submission of
estimated data. actual data.
Q
C Tables A,B,C,and D
7.2 Have you completed Table A for each outfal[?
® Yes ❑ No
EPA Form 3510-21'(Revised 3-19) Page 3

EPA Identification Number NPOE5 Permit Number Facility Name Farm Approved 03105119
110000349267 NC5000040 Charlotte Pipe&Foundry OMB No.2040-0004
7.3 Is the facility subject to an effluent limitation guideline(ELG)or effluent limitations in an NPDES permit for its process
wastewater?
❑ Yes 0 No 4 SKIP to Item 7.5.
7.4 Have you completed Table B by providing quantitative data for those pollutants that are(1)limited either directly or
indirectly in an ELG andlor(2)subject to effluent limitations in an NPDES permit for the facility's process wastewater?
❑ Yes 0 No
7-5 Do you know or have reason to believe any pollutants in Exhibit 2F-2 are present in the discharge?
0 Yes ❑ No 4 SKIP to item 7.7-
7-6 Have you listed all pollutants in Exhibit 2F-2 that you know or have reason to believe are present in the discharge and
provided quantitative data or an explanation for those pollutants in Table C?
❑ Yes 0 No
7.7 Do you qualify for a small business exemption under the criteria specified in the Instructions?
❑ Yes 4SKIP to Item 7.18. 0 No
7.8 Do you know or have reason to believe any pollutants in Exhibit 2F-3 are present in the discharge?
0 Yes ❑ No 4 SKIP to Item 7.10.
7.9 Have you listed all pollutants in Exhibit 2F-3 that you know or have reason to believe are present in the discharge in
c Table C?
•C
0 Yes ❑ No
U
0 7.10 Do you expect any of the pollutants in Exhibit 2F-3 to be discharged in concentrations of 10 ppb or greater?
w
E 0 Yes ❑ No 4 SKIP to Item 7.12.
0
7.11 Have you provided quantitative data in Table C for those pollutants in Exhibit 2F-3 that you expect to be discharged in
En concentrations of 10 ppb or greater?
s ® Yes ❑ No
U
n
7.12 Do you expect acrolein,acrylonitdle,2,4-dinitrophenol,or 2-methyl-4,6-dinitrophenol to be discharged in concentrations
of 100 ppb or greater?
❑ Yes l No 4 SKIP to Item 7.14.
7.13 Have you provided quantitative data in Table C for the pollutants identified in Item 7.12 that you expect to be
discharged in concentrations of 100 ppb or greater?
0 Yes ❑ No
7.14 Have you provided quantitative data or an explanation in Table C for pollutants you expect to be present in the
discharge at concentrations less than 10 ppb(or less than 100 ppb for the pollutants identified in Item 7.12)?
® Yes ❑ No
7.15 Do you know or have reason to believe any pollutants in Exhibit 2F4 are present in the discharge?
❑ Yes 0 No 4 SKIP to Item 7.17.
7.16 Have you listed pollutants in Exhibit 2F4 that you know or believe to be present in the discharge and provided an
explanation in Table C?
0 Yes ❑ No
7.17 Have you provided information for the storm event(s)sampled in Table D?
0 Yes ❑ No
EPA Farm 3510-2F(Revised 3-19) Page 4

EPA Identificafion Number NPDES Permit Number Facility Name Form Approved 03/05/19
110000349267 NC5000040 Charlotte Pipe&Foundry OMB No.2040-0004
o Used or Manufactured Toxics
7.18 Is any pollutant listed on Exhibits 2F-2 through 217-4 a substance or a component of a substance used or
manufactured as an intermediate or final product or byproduct?
0
Yes ❑ No SKIP to Section 8.
0
0
E
7.19 List the pollutants below,including TCDD if applicable.
0
c 1.Oil&Grease 4.Zinc 7.
a�
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s 2.Coppef 5. &
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3 Lead 6. 9.
SECTION ! !GICAL TOXICITY TESTING DATA r
8.1 Do you have any knowledge or reason to believe that any biological test for acute or chronic toxicity has been made on
any of your discharges or on a receiving water in relation to your discharge within the last three years?
0
c ❑ Yes 0 No 4 SKIP to Section 9.
.y
1 CU 8.2 Identify the tests and their purposes below.
21' Submitted to NPDES
ra Tesgs) Purpose of Tests) Permitting Authority?
Date Submitted
x
0
~ ❑ Yes ❑ No
M
o El Yes ❑ No
m0
❑ Yes ❑ No
SECTION ! INFORMATION
9.1 Were any of the analyses reported in Section 7(on Tables A through C)performed by a contract laboratory or
consulting firm?
0 Yes ❑ No 4 SKIP to Section 10.
9.2 Provide information for each contract laboratory or consulting firm below.
Laboratory Number 1 Laboratory Number 2 Laboratory Number 3
Name of laboratoryffirm Pace Analytical Services Pace Analytical Services Pace Analytical Services
c Charlotte Asheville Peachtree Corners
b
0
w
C
Laboratory address 9800 KinceyAve.Ste 100, 222S Riverside Drive, 110 Technology Pkwy,
> Huntersville,NC 28078 Asheville,NC 28804 Peachtree Corners,GA
cc
30092
a
L
o Phone number
v [phone]
Polluiant(s)analyzed Total Petroleum Hydrocarbons Total Suspended Solids, Copper,Lead,Zinc
Chemical Oxygen Demand
EPA Form 3510-2F(Revised 3-19) Page 5

EPA Identification Number NPOES Permit Number Facility Name Form Approved 03105119
110000349267 NC5000040 Charlotte Pipe&Foundry Wil No.2040-0004
SECTION I CHECKLIST AND Y
10.1 In Column 1 below,mark the sections of Form 2F that you have completed and are submitting with your application.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 cam lete all sections or provide attachments.
Column 1 Column 2
0 Section 1 ❑ wl attachments(e.g.,responses for additional outfalls)
0 Section 2 ❑ w/attachments
0 Section 3 ❑ wl site drainage map
0 Section 4 ❑ wl attachments
0 Section 5 ❑ wl attachments
c
© Section 6 ❑ wl attachments
® Section 7 0 Table A ❑ wl small business exemption request
o ❑ Table B RI wl analytical results as an attachment
0 Table C 0 Table D
0 Section 8 ❑ wlattachments
y ® Section 9 ❑ wlattachments(e.g., responses for additional contact laboratories or firms)
❑✓ Section 10 ❑
c)
10.2 Certification Statement
I certify under penalty of taw that this document and all attachments were prepared under my direction or supervision in
accordance with a system designed to assure that qualified personnel properly gather and evaluate the information
submitted. Based on my inquiry of the person orpersons who manage the system or those persons directly responsible
for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and
complete. I am aware that there are significant penalties for submitting false information, including the possibility of tine
and imprisonment for knowing violations.
Name(print or type first and last name) Official title
Mike Hall VP of Cast Iron Operations
Signature Date signed �J
EPA Form 3510-2F(Revised 3-19) Page 6

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
110DO0349267 NCS000040 Charlotte Pipe&Foundry A OMB No.2040-0004
TABLE A. 4t
You must provide the results of at least one anall sis for every pollutant in this table.Complete one table for each outfall.See Instructions for additional details and recluirements.
Maximum Daily Discharge Average Daily Discharge Source of
(specify units) (specify units) Number of Storm Information
Pollutant or Parameter Grab Sample Taken Grab Sample Taken (new source/new
During First FlComposit ed During First Flow-Weighted Events Sampled dischargers only;use
30 Minutes Composite 30 Minutes Composite codes in Instructions)
1. Oil and grease ND 2
2. Biochemical oxygen demand(BOD5) NA
3. Chemical oxygen demand(COD) 59 mg/L 11
4. Total suspended solids(TSS) 22 mg/L 11
5. Total phosphorus NA
6. Total Neldahl nitrogen(TKN) ND 2
7. Total nitrogen(as N) NA
pH(minimum) 5.2 11
8.
pH(maximum) 8.6 11
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 Forth 3510-21'(Revised 3-19) Page 7

EPA Identification Number NPDES Permit Number Fadlily Name Cutfali Number Form Approved 03105/19
110000349267 NC5000040 Charlotte Pipe&Foundry B OMB No.2040-0004
TABLE A.CONVENTIONAL AND NON CONVENTIONAL PARAMETERS(40 CFR 122.26(c)(1)(1)(E)(3)),
You must provide the results of at least one anal sis for every pollutant in this table.Com lete one table for each outfall.See instructions for additional details and re uirements.
Maximum Daily Discharge Average Daily Discharge Source of
(specify units) (specify units) Information
Number of Storm
Pollutant or Parameter Grab Sample Taken Grab Sample Taken (new sourcetnew
During First Flow-Weighted Sit ed During First Flow-Weighted Events Sampled dischargers only;use
30 Minutes ComposiEe 30 Minutes Composite codes in instructions)
1. Oil and grease 5.8 mg/L 2
2. Biochemical oxygen demand(BODs) NA
3. Chemical oxygen demand(COD) 158 mg/L 11
4. Total suspended solids(TSS) 126 mg/L 11
5. Total phosphorus NA
6. Total Kjeldahl nitrogen(TKN) ND 2
7. Total nitrogen (as N) NA
pH(minimum) 5.4 11
8.
pH(maximum) 8.8 11
' 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 3510.2F(Revised 3.19) Page 7

EPA Identification Number NPDES Permit Number Facility Name Wall Number Form Approved 030/19
110000349267 NC5000040 Charlotte Pipe&
P Foundry C-Prefilter OMB No.2040-M ,
TABLE A. CONVENTIONAL AND NON CONVENTIONAL PARAMETERS(40 CFR 122.26(c)(1)(i)(E)(3)),
You must provid2 the results of at least one anal sis for every pollutant in this table.Complete one table for each outfall.See instructions for additional details and rMequirements.
Maximum Daily Discharge Average Daily Discharge Source of
(spedfyunits) (spedfyunits) Number of Storm Information
Pollutant or Parameter Grab Sample Taken Grab Sample Taken (new source/new
During First Flow-Weighted ed During First Flow-Weighted Events Sampled dischargers only,use
30 Minutes Composite 30 Minutes Composite codes in instructions)
1. Oil and grease ND 13
2. Biochemical oxygen demand(BOD5) NA
3. Chemical oxygen demand(COD) 93 mg/L 13
4. Total suspended solids(TSS) 183 mg/L 13
5. Total phosphorus NA
6. Total Neldahl nitrogen(TKN) ND 2
7. Total nitrogen(as N) NA
pH(minimum) 5.2 13
8.
pH(maximum) 9.0 13
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 3510-21'(Revised 3-19) Page 7

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03A5119
110000349267 NCS000040 Charlotte Pipe&Foundry A.0 OMB No.2040-0004
List each pollutant that is limited in an effluent limitation guideline(ELG)that the facility is subject to or any pollutant listed In the facility's NPDES permit for its process wastewater(if the
facility is operating under an existing NPDES permit).Complete one table for each outfall.See the instructions for additional details and requirements.
Maximum Daily Discharge Average Daily Discharge Source of
(sped units s e units Number of Storm Information
Pollutant and CAS Number(If available) Grab Sample Taken Grab Sample Taken (new sourcelnew
During First Flow-Weighted ed During First Flo Composite
Events Sampled dischargers only;use
30 Minutes Composite 30 Minutes Composite codes in Instructions)
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 3510-21'(Revised 3-19) Page 9

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Farm Approved 03105J19
110000349267 NCSO0004O Charlotte Pipe&Foundry A.0 OMB No.2040aU
TABLE C.TOXICPOLLUTANTS, A•/• SUBSTANCES, / 41 41
List each pollutant shown in Exhibits 2F-2,2F-3,and 2F4 that you know or have reason to believe is present.Complete one table for each outfall.See the instructions for additional
details and requirements.
Maximum Daily Discharge Average Daily Discharge Source of
(sped units (sped units Number of Storm Information
Pollutant and CAS Number(if available) Grab Sample Taken Grab Sample Taken (new sourceMew
During First Flo Composite
Flow-Weighted During First Flo Composite
Events Sampled dischargers only;use
30 Minutes Compostte 30 Minutes Composite codes In Instructlons)
See Summary table of sampling analyses
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 Forth 3510-217(Revised 3.19) Page 11

EPA Identification Number NPDES Permit Number Facility name Outfall Number Form Approved 030/19
110000349267 NCS000040 Charlotte Pipe&Foundry A-C OMB No.2040-0004
TABLE D. STORM EVENT INFORMATION(40 GFR 122.26(c)(1)(i)(E)(6))
Provide data for the storm event(s)that resulted in the maximum dally discharges for the flow-weighted composite sample.
Number of Hours Between
Total Rainfall During Maximum Flow Rate
Date of Storm Event Duration of Storm Event Storm Event Beginning of Storm Measured and During Rain Event Total Flow from Rain Event
(In hours) (in inches) End of Previous Measurable Rain (In gpm or specfy unHs) M gallons or specify units)
Event
06/19/2023
Unknown 1.0 Unknown Unknown 714,865
Provide a description of the method of flow measurement or estimate.
26.32 Acres*6.27264E+6 sq-in/acre*1 in rainfall*0.00432 gallon/cubic in=714,865 gallons
EPA Form 3510-21'(Revised 3.19) Page 13

SUPPLEMENTAL INFORMATION REQUIRED FOR RENEWAL OF INDIVIDUAL
NPDES STORMWATER PERMIT
Two copies of each of the following shall accompany this submittal in order for the application
to be considered complete:
(Do not submit the site Stormwater Pollution Prevention Plan)
Initials
A4 1. A current Site Map from the Stormwater Pollution Prevention Plan. The location of
industrial activities (including storage of materials, disposal areas,process areas and
loading and unloading areas), drainage structures, drainage areas for each outfall,
building locations and impervious surfaces should be clearly noted.
1f4 2. A summary of Analytical Monitoring results during the term of the existing permit
(if your permit required analytical sampling). Do not submit individual lab reports.
The summary can consist of a table including such items as outfall number,
parameters sampled, lab results, date sampled,and storm event data.
l4 3. A summary of the Visual Monitoring results. Do not submit individual monitoring
reports. The summary can consist of a table including such items as outfall number,
parameters surveyed, observations, and date monitoring conducted.
4. A summary of the Best Management Practices utilized at the permitted facility.
Summary should consist of a short narrative description of each BMP's in place at
the facility. If the implementation of any BMP's is planned,please include
information on these BMP's.
5. A short narrative describing any significant changes in industrial activities at the
permitted facility. Significant changes could include the addition or deletion of
work processes, changes in material handling practices, changes in material storage
practices, and/or changes in the raw materials used by the facility.
6. Certification of the development and implementation of a Stonmwater Pollution
Prevention Plan for the permitted facility(Sign and return attached form).
If the final year analytical monitoring of the existing permit term has not been completed
prior to filing the renewal submittal,then the last years monitoring results should be submitted
within 30 days of receipt of the laboratory reports. (i.e. do not withhold renewal submittal
waiting on lab results)

Summary of Analytical Monitoring Results
SW Outfall A(sheet flow behind Shipping)
10/2018 01/2019 06/2019 10/2019 03/2020 11/2020 03/2021 11/2021 05/2022 11/2022 05/2023
Bench- Post Filter Post Filter Post Filter Post Filter Post Filter Post Filter Post Filter Post Filter Post Filter Post Filter
Characteristic Mark units Monrhly Monrhly As Requested As Requested As Requesred SemiAnnll SemlAnnfl semi-Ann12 Semi-Anna 5emi-Ann12 Semi-Ann11
Oil&Grease 30.00 mg/L NO ND
Cr 1.00 mg/L ND NO
Cu 0.01 mg/L 0.009 0.005 0.010 0.006 0.012 0.008 0.027 0.01 ND ND ND
Ph 0.075 mg/L 0.01 NO 0.009 ND 0.010 0.008 0.037 ND ND NO NO
N1 0.335 mg/L ND ND
Zn 0.126 mg/L 0.138 0.076 0.048 0.110 0,147 0.093 0.408 0,102 0.130 0.056 0.108
TSS 100 mg/L 31 51.6 22.2 20.9 54.7 27.0 83.3 18 4.2 ND 22.0
PH 6-9 6.8 5.2 5.3 5.2 8.6 6.5 6.9 6.8 7.3 9.7 7.8
TKN 20-Jan mg/L ND ND
Phenols 4-Jan mg/L 0.0 ND
COD 1 120 mg/L 39 N❑ ND 41.2 59.8 54.6 112 31 77 32 59
Total Rainfall in 1-8 1.24 1.0 1 1.8 1 0.5 1 4.3 1 0.5 1 0.2 1 0.3 1 0.5 1.0
SW Outfall B(sheet flow @ Ecoat)
10/2018 01/2019 06/2019 10/2019 03/2020 11/2020 03/2021 12/2021 0512022 11/2022 06/2023
Bench- Post Filter Post Filter Post Filter Post Filter Post-Filter Past-Filter Post-Filter Post-Filter Post-Filter Post-Filter
Characteristic Mark Units M-thly Monthly As Requesred MRequested As Requested semi,AnmU semfAnnll srmf-Annl2 semf-Annll semiAnn12 Semr-Annll
Oil&Grease 30.00 mg/L ND 5.8
Cr 1.00 mg/L ND 0.008
Cu 0.01 mg/L 0.009 0.012 0,006 0.93 0.02 0.03 0.02 0.02 0.03 ND 0.04
Ph 0.075 mg/L 0.01 0.014 0.010 0.124 0.027 0,037 0.043 0.030 0.063 ND 0.042
Ni 0.335 mg/L ND NO
Zn 0.126 mg/L 0.223 0.21 0.096 1.27 0.216 0.274 0.334 0.287 0.578 0.156 0.543
TSS 100 mg/L 31 125 24.6 1640 111 101 102 69 147 24 126
PH 6-9 7.6 5.4 5.4 6.2 8.8 8.7 7.2 7.4 7.9 8.0 9.5
TKN 20-Jan mg/L ND ND
Phenols 4-Jan mg/L 0.0 ND
COD 120 mg/L 44 53.1 NO 183.0 87.7 86.2 159 ND ND 27 158
Total Rainfall I in 1.8 1.24 7.0 1 1.$ 1 0.5 1 4.3 1 0.5 1 0.2 1 0.3 1 O.5 l.D
SW Outfall C(prefilter sheet flow @ Oil House)
10/2019 01/2019 0612019 SO/2019 03/2020 11/2020 03/2021 11/2021 05/2022 06/2023
Bench- Post Filter Pre-Filter Post-Filter Pre-filter Post-Filter Pre-Filter Post-Filter Pre-Filter Pre-Filter Pre-Filter Pre-Filter Pre-Filter
Characteristic Mark Units Monthly Monthly MRequested MRequesred As Requrrrrd At Requesred As Requesred As Requested Srmi-An f2 semi-Ann11 Semi.Ann12 SrmMnnll Sem1-A-0
Oil&Grease 30.00 mg/L ND ND NO ND ND ND ND NO ND NO ND ND ND
Cr 1,00 mg/L 0 0.010
Cu 0.01 mg/L 0.023 0.016 ND 0.006 0.035 0.014 0.039 0,132 0.022 0.016 0,04 ND 0.033
Ph 0.075 mg/L 0.02 0.014 ND 0.005 0.040 0.010 0.035 0.114 0.027 0.014 0.140 NO 0.051
Ni 0.335 mg/L 0.01 0.006
Zn 0.126 mg/L 0.651 0.372 0.404 0.307 0.356 0.577 0.652 0.657 0,691 0.917 0.523 0.07 0.30
TSS 100 mg/L 179 88.3 15.9 27.0 138 14.0 317 836 162 92.7 220 88 183
PH 5-9 7.2 6.4 5.6 5.8 6.0 5.2 9.0 8.7 7.8 7.4 7.7 7.7 7.9
TKN 20-Jan mg/L ND ND
Phenols 4-Jan mg/L 0.0 0.38
COD 120 mg/L 156 80.9 ND 202 117 60.1 232 678 57.0 77.4 71 46 93
Total Rainfaill in 1 1.$ 1 1.24 1 1.0 1 1.8 1 0.5 1 4.3 1 0.5 1 0.2 1 0.5 1 1.0
Rainwater(collected in a Plastic Bucket)
Bench- 10/2018 01/2019 O6/2019 10/2019 03/2020 11/2020 03/2021
Characteristic Mark Units Monrhfy Monthly A,Requested As Requesred As Requested semi-Anna srmf Annll
PH 1 6-9 5.6 1 1 4.3 1 5.6 1 4.4 1 5.5

Summary of Visual Inspections
Floating Suspended
Precipitation Clarity Solids Solids Foam Oil Sheen Erosion
Date (in) Outfall Color Odor (1 to 5)* (1 to 5)"* (1 to 5)*** Present? Present? Present?
6/19/2023 1.0 A Lt Gray None 1 1 1 No No No
6/19/2023 1.0 B Lt Gray None 2 2 2 No No No
6/19/2023 1.0 C Med Gtay None 2 2 2 No No No
11/6/2022 0.5 A Lt Gray I None 1 1 1 No No I No
11/6/2022 0.5 B Lt Gray None 2 2 2 No No No
11/6/2022 0.5 C Med Gray None 2 2 2 No No No
5/21/2022 0.3 A Lt Gray None 1 1 1 No No No
5/21/2022 0.3 B Med Gray None 3 3 3 No No No
5/21/2022 0.3 C Dark Gray None 4 3 4 No No No
11/22/2021 0.2 A Lt Gray None 1 1 1 No No No
11/22/2021 0.2 B Med Gray None 2 2 2 No No No
11/22/2021 0.2 C Dark Gray None 4 3 4 No No No
5/31/2021 0.5 A Lt Gray None 2 1 1 No No No
3/31/2021 0.5 B Med Gray None 2 2 3 No No No
3/31/2021 0.5 C Dark Gray None 4 3 4 No Yes No
11/12/2020 4.3 A Lt Gray None 2 1 1 No No No
11/12/2020 4.3 B Med Gray None 3 3 3 No No No
11/12/2020 4.3 C Dark Gray None 4 3 4 No No No
3/23/7020 0.5 A Lt Gray None 2 1 1 No No No
3/23/2020 0.5 31 Med Gray None 2 2 3 No No No
3/23/2020 0.5 C2 Dark Gray None 4 3 4 No Yes No
10/22/2019 0.7 A Clear None 2 1 1 No No No
10/22/2019 0.7 131 Med Gray None 2 3 3 No No No
10/22/2019 0.7 e Med Gray None 2 3 3 No No No
6/12/2019 1.0 A Clear None 2 1 1 No No No
6/12/2019 1.0 BI Lt Gray None 2 1 1 No No No
6/12/2019 1.0 C2 Gray None 2 3 2 No No No
3/23/2020 0.5 B' Lt Gray None 2 2 2 No No No
6/12/2019 1.0 B3 Gray None 2. 2 2 No No No
10/22/2019 0.7 63 Gray None 2 2 3 No No No
"where 1 is clear and 5 is very cloudy
"*where 1 is no solids and 5 is the surface covered with floating solids
***where 1 is no solids and 5 is extremely muddy
Nate:
Originally recorded as Outfall C prior to approved removal of Old Outfall B in late 2020 when Outfall C became B
2 Originally retarded as Outfall D prior to approved removal of Old Outfall B in late 2020 when Outfall D became C
3 This Old Outfall B removed in Late 2020

BEST MANAGEMENT PRACTICES
Outfall
Impacted Location BMP Description Approved Date of Completion
OutfaI]A Foundry Areas draining to Sweeping outside areas of foundry Continuous Continuous
SWO `A'
Outfall A Foundry Areas draining to Implemented policy that as galvanized metal siding is 2013 2013
SWO W replaced,galvanized aluminum siding will be used
Outfall A Behind Pipe Storage Installed sock insert at storm culvert: Behind Pipe Storage Nov 2018 Dec 2018
(Swig)
Outfall A Product Storage Cover Product Storage Areas Not Feasible Not Feasible
Outfall B Foundry Areas draining to Sweeping outside areas of foundry Continuous Continuous
Outfall B
Outfall B Melt Sweep up dustings around the Cupola baghouse Continuous Continuous
Outfall B Melt Operation &Collection of Dust in Cupola Baghouse Continuous while in Continuous while in
Operation Operation
Outfall B Hot Dip #2 &#3 Hot Dip Collection Totes relocated to be within the 2008 2008
building
Outfall B Hot Dip Sump from Hot Dip Main Storage Tank piped to WWTP for 2008 2008
treatment
Outfall B Melt Sumps from Coke Unloading piped to WWTP for treatment 2009 2010
Outfall B Melt Sumps from Additives Handling piped to WWTP for 2010 2011
treatment
Outfall B Melt Sumps from Charging System and ground area around 2010 2011
charging area piped to WWTP for treatment
Outfall B Foundry Areas draining to Implemented policy that as galvanized metal siding is 2013 2013
Outfall B replaced, galvanized aluminum siding will be used
Outfall B E-Coat Process Started e-coating fittings; more rust-resistant therefore June 2013 June 2013
less rust present on stored fittings product
Page 1 of 4

BEST MANAGEMENT PRACTICES
Outfall
Impacted Location BMP Description Approved Date of Completion
Outfall B Melt Dust Supression -Water Spray on charging system to keep 2013 2014
metallics from drifting to areas where run-off will go to
stormwater
Outfall B Melt Dust Supression -Water Spray in scrap yard to keep Jan 2015 Mar 2015
metallics contained to that area where run-off will go to
WWTP for treatment
Outfall B Foundry Areas draining to Installed filter inserts into storm drains: Corner of Office Nov 2018 Dec 2018
Outfall B Bldg (SW1), Hot Dip Lean-To (SW2)
Outfall B Main Gate/E-coat Installed sock insert into storm culvert: Outside E-coat Nov 2018 Dec 2018
(SW18)
Outfall B Scrap Yard Cover Scrap Yard Not Feasible Not Feasible
Outfall B Product Storage Cover Product Storage Areas Not Feasible Not Feasible
Outfall B Other Foundry Areas Treat Stormwater Not Feasible Not Feasible
draining to Outfall B
Outfall C Foundry Areas draining to Sweeping outside areas of foundry Continuous Continuous
Outfall C
Outfall C Foundry Areas draining to Operation & Collection of Dust in Baghouses associated Continuous while in Continuous while in
OutfalI C with HWS, NPF and Rolocast areas Operation Operation
Outfall C NPF Sweep dustings around the HWS, NPF and Rolocast Continuous Continuous
baghouses sand handling collection bins
Outfall C Waste Area Installed building to cover Waste Aggregate Area 2009 Jul 2010
Outfall C NPF Dust Supression -Covered NPF & Rolocast baghouse dust 2012 2012
collection boxes
Page 2 of 4

BEST MANAGEMENT PRACTICES
Outfall
Impacted Location BMP Description Approved Date of Completion
Outfall C NPF Bust Supression -Covered HWS baghouse dust collection Feb 2018 Feb 2018
boxes
Outfall C Foundry Areas draining to Installed filter inserts into storm drains: Oil house (SW6), Nov 2018 Nov/Dec 2018
Outfall C NPF Bagouse (SW7), Sand Lab (SW8), 3 hill @ gas pumps
(SW9, SW10,SW11), HWS Baghouse (SW12),Top of Hill
(SW17)
Outfall C Core Storage Cover Core Storage Areas Not Feasible Not Feasible
Outfall C Hill Cover roll-off bins Not Feasible Not Feasible
Outfall C Foundry Areas draining to Treat Stormwater Not Feasible Not Feasible
Outfall C
Misc Areas Facility-Wide Sweeping outside areas of foundry Continuous Continuous
Misc Areas Facility-Wide Dust Supression - Covered facility-wide baghouse dust Continuous Continuous
collection boxes
Misc Areas Facility-Wide Sweep dustings around all baghouse collection bins Continuous Continuous
Misc Areas Facility-Wide Operation &Collection of Facility-Wide Baghouses Continuous while in Continuous while in
Operation Operation
Misc Areas Gun Drill Collect Compressor Condensate in a Tote that is carried to Continuous Continuous
WWTP for treatment
Misc Areas Facility-Wide Implemented policy that as galvanized metal siding is 2013 2013
replaced,galvanized aluminum siding will be used
Misc Areas WWTP Required the feldspar delivery truck to place catch pans Feb 2014 Mar 2014
under hopper bottoms to catch potential leaks
Misc Areas Rolocast Rolocast Office AC Condensate collected and taken to Sep 2014 Oct 2014
WWTP for treatment
Page 3 of 4

BEST MANAGEMENT PRACTICES
Outfall
Impacted Location BMP Description Approved Date of Completion
Misc Areas Rolocast Dust Supression - Replaced Silo Bin Vent with ductwork to Feb 2018 Aug 2018
vent through baghouse for better capture
Misc Areas Shell Core/NPF Installed filter inserts into storm drains: Kitchen Alley side Jun 2018 Jun 2018
(SW13, SW14, SW15), Alley @ Pattern Shop (SW16)
Misc Areas Rolocast Installed filter inserts into storm drains: Corner of Oct 2018 Oct 2018
Substation & Rolo Laempe (SW4), Corner of Substation &
Rolo Electr Rm (SW5)
Misc Areas WWTP Installed filter inserts into storm drain: Water Treatment Nov 2018 Nov 2018
(SW3)
MiscAreas Foundry Areas draining to Treat Stormwater Not Feasible Not Feasible
Misc Areas
Page 4 of 4

Summary of Significant Changes in Industrial Activity
Charlotte Pipe and Foundry has not experienced significant changes in Industrial Activity since
the last permit renewal.
The Charlotte Pipe and Foundry Charlotte location does plan to initiate shutdown of process
equipment during the later part of CY2023.