NCS000021_Renewal application_20230816

i
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
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.
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.
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.
S. 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 Stormwater 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)
REG
G����.5tam}Wa''�r F�ogCam
D

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
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.
. 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.
AM 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.
fM 4. A sununary 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.
jt�'/111 6. Certification of the development and implementation of a Stormwater 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)

MATERIAL INVENTORY
Siemens Energy,Inc.,Turbine-Generator Plant
Charlotte,North Carolina
Quantity Likelihood of contact with Past
Material Purpose/Location (all units lbs unless noted)
stormwater. If yes,describe reason. Significant
Based on 2008 Inventory Spill or Leak
Used Produced Stored Yes No
Abrasives- Plant Varies 0 <1,000 Outside Storage of Material X
Mineral Sands Prepare for Disposal
#2 Fuel Oil AST Fuel Oil Storage Area 16,000 gal 0 <5,000 gal Outside AST with Secondary X
Containment/Loading and Unloading
Acetylene Plant 20,000 cf 0 2,500 cf None X
Acids Plant 18,000 0 <5,0000 gal Lab Residue-Empty Containers X
Adhesives Plant Varies 0 <500 gal None X
Alcohols Plant 5,000 0 <1,000 gal Residue-Empty Drum Storage and Plastic X
Containers
Aluminum Oxide Rotor Blasting/Plant 21,000 0 <20,000 Overflow from Storage Containers X
Ambitrol Coolant/Plant Varies 0 <1,000 None X
Ammonia Plant Varies 0 <800 gal None X
Argon Manufacturing Process/Argon Varies 0 1,500 gal None X
Storage Tank storage tank
Bleach Plant <20,000 0 <5,000 None—used for bloodborne pathogen X
cleanup by ERT
I

Quantity
(all units Ibs unless noted) Likelihood of contact with Past
Material Purpose/Location stormwater. If yes,describe reason. Significant
Based on 2008 Inventory Spill or Leak
Used Produced Stored Yes No
Bronze Bearings Plant Varies 0 Varies None X
Calcium Dispersing Agent Varies 0 <500 None X
Hydroxide Plant
Caustic Plant Varies 0 <100 None X
(Ammonia)
Castic Soda Plant <20,000 0 <5,000 Residue-Empty Drum Storage X
Cement Coatings Plant Varies 0 <200 Construction mixer cleanout X
CFC-134A Ref igerant/Plant <15,000# 0 <15,000 None X
Chemical Test Power House/Corrosion Varies 0 Varies Small volume containers in Power House X
Reagents for Control chemical cabinet
Water Treatment
Chromium Plant Varies 0 Varies Outside Storage of Turbine Generator Parts X
Products and Forgings
Copper Wire Plant Varies 0 <5,000 Outside Storage Runoff X
Corrosion Plant Varies 0 <1,000 gal None X
Inhibitors
Cutting Fluids Plant Varies 0 <7,000 gal Leakage from metal turning(chip)storage X
bins and empty drums
Daconil 2787 Fungicide Varies 0 0 Applied Quarterly by Contractor X
Disinfectants Plant Varies 0 <100 None X
2

Quantity
(all units lbs unless noted) Likelihood of contact with Past
Material Purpose/Location stormwater. If yes,describe reason. Significant
Based on 2008 Inventory Spill or Leak
Used Produced Stored Yes No
Electrodes Manufacturing Process/Plant Varies 0 <10,000 None X
Electroplating Plant Varies 0 <1,000 gal None X
Empty Drums Empty Drum Storage Varies 0 <100 Runoff from Empty Drums X
Equipment Maintenance&Product Varies 0 Varies Outside Equipment Runoff X
Storage Storage Areas
Etching Marker Plant Varies 0 Varies None X
Tint
Ethylene Glycol Coolant/Plant Varies 0 <1,000 gal Residue—Empty Drum Storage X
Ethoxylated Rotor Assembly and Large Varies 0 <500 gal Overflow or pipe rupture X
amines&orange Parts Wash Booths
terpenes
Fertilizer(16-8-8) Lawn Maintenance Varies 0 0 Applied Bi-Annually by Contractor X
Fertilizer(18-8-9) Lawn Maintenance Varies 0 0 Applied Bi-Annually by Contractor X
Fibrous Glass Plant Varies 0 <5,000 None X
Insulation
Flux-Brazing& Plant Varies 0 <5,000 None X
Soldering
Glass Bead Rotor Blasting/Plant 272,000 0 <50,000 Overflow from Storage Containers X
Glutaraldehyde Microbiocide/ Varies 0 <500 None X
Process Water
Grout Plant Varies 0 <1,000 Construction mixer cleanout X
3

Quantity
(all units Ibs unless noted) Likelihood of contact with Past
Material Purpose/Location stormwater. If yes,describe reason. Significant
Based on 2008 Inventory Spill or Leak
Used Produced Stored Yes No
Helium Manufacturing process- Varies 0 150,000 None X
helium storage tanks cu.ft.gas
Industrial Plant <12,000 0 <5,000 gal Residue—Empty Drum Storage and Small X
Cleaners Volume Containers
Insecticides Plant and Property Varies 0 <100 Application As Required X
INSTAPAK Shipping/Plant Varies 0 <500 gal Part of wood boxes and packaging stored X
Packaging Foams outside or in recycle pile
Components
A&B
Iron and Plant Varies 0 <1,000 None X
Antimony Powder
Kerosene AST North of Plant 800 gal 0 <500 gal Outside AST with Secondary X
Containment/Loading and Unloading
Laminated Glass Plant <1,000 0 <1,000 None X
Cloth Sheets
Linseed Oil Plant <100 0 <200 gal None X
Live Non- Surfactants 500 0 <1,000 None X
Pathogenic
Organisms
Liquid Sevin Japanese Beetle Varies 0 0 Applied Bi-Annually by Contractor X
Lubricating Oils Drum&Flammable 51,000 gal 0 <23,000 gal Loading and Unloading X
Mat'UStorage Bldg.&Bulk
Oil AST
4

Quantity
(all units Ibs unless noted) Likelihood of contact with Past
Material Purpose/Location stormwater. If yes,describe reason. Significant
Based on 2008 Inventory Spill or Leak
Used Produced Stored Yes No
Molybdenum Plant Varies 0 Varies Outside Storage of Turbine Generator Parts X
(Products, and Forgings
Electrodes,Wire
Forging)
Nickel(Rings, Plant Varies 0 Varies Outside Storage of Turbine Generator Parts X
Plates,Forgings) and Forgings
Nitrogen Plant Varies 0 <5,000 cf None X
Non Potable Clarifier Tank Varies 0 <300,000 gal None X
Water
Oil Additives Plant Varies 0 <500 gal None X
Oxygen Manufacturing Varies 0 1,500 gal None X
Process/Oxygen Storage Tank
Paints,Stains and Plant 5,000 0 <3,000 None X
Primers
Penetrants Plant Varies 0 <1,000 gal None X
Plant Waste Dumpsters&Hazardous Mat'1 Varies 0 <20,000 Overflow from Dumpsters or Accumulation X
Accumulation Area in Secondary Containment
Photocopy Toner Radiographic Lab Varies 0 <1,000 None
Photographic Radiographic Lab Varies 0 <1,000 gal None X
Development
Chemicals
Propane Emergency Fuel/Propane Varies 0 19,000 gal None X
Storage Tank
5

Quantity
(all units Ibs unless noted) Likelihood of contact with Past
Material Purpose/Location stormwater. If yes,describe reason. Significant
Based on 2008 Inventory Spill or Leak
Used Produced Stored Yes No
Propylene Glycol Plant Varies 0 Varies None X
Ether
Propylene Glycol Plant Varies 0 Varies None X
Monomethyl
Ether
Polysiloxan Plant <500 0 <500 None X
(Silicone Rubber)
Raw Copper Plant Varies 0 <5,000 Outside Storage Runoff X
Raw Steel Raw Material/Plant Varies 0 Varies Outside Storage Runoff X
Reducing Agents Plant Varies 0 Varies None X
Refractory Fiber Plant <1,000 0 <500 None X
Resin Epoxy Plant Varies 0 <5,000 Outside disposal in regulated dumpster X
Glass and Teflon
Resin Film Tapes
Round-Up Weed Control Varies 0 0 Applied Every 3 Weeks by Contractor X
Rust Inhibitors Plant <2,000 0 <1,000 gal None X
Sand Plant Varies 0 <5,000 Outside Storage of Material X
Sealants Plant Varies 0 <500 gal None X
Sheet Metal Manufacturing Process/Plant Varies j 0 j Varies I Outside Storage Runoff X
Shellac Plant 200 0 <200 gal None X
6

Quantity
(all units lbs unless noted) Likelihood of contact with Past
Material Purpose/Location stormwater. If yes,describe reason. Significant
Based on 2008 Inventory Spill or Leak
Used Produced Stored Yes No
Shipping Timbers Shipping Material Storage Varies 0 Varies Outside storage of material(dunnage) X
North of Plant
Silastic Sealant Plant <500 0 <500 None
Silica Gel Plant <500 0 <100 None X
Silicon Potting Plant <500 0 <500 None
Compound
Silicone/Putties Plant Varies 0 <500 None X
Solder Plant Varies 0 <1,000 Outside Storage of Turbine Generator Parts X
and Forgings
Solvents and Plant 4,000 0 <1,000 gal None X
Thinners
Steel Pipe Plant Varies 0 Varies Outside Storage Runoff X
Steel Shot Rotor Blasting/Plant Varies 0 <5,000 Overflow at Collection Area X
Steel Wire Plant Varies 0 Varies Outside Storage Runoff X
Surflan A.S. Weed Control Varies 0 0 Applied Annually by Contractor X
Talc Powder and Plant 0 0 <2,000 Outside Storage/Unloading(not currently X
Diatomaceous used on site)
Earth
Test Solutions Radiographic Lab Varies 0 <1,000 None X
Trimec 992 Weed Control Varies 0 0 Applied Annually by Contractor X
Trisodium Plant Varies 0 <100 None
Phosphate
7

Quantity
(all units Ibs unless noted) Likelihood of contact with Past
Material Purpose/Location stormwater. If yes,describe reason. Significant
Based on 2008 Inventory Spill or Leak
Used Produced Stored Yes No
Varnish Plant 1,500 0 <1,000 None X
Used Oils Used Oil Storage Bldg.or Varies 0 <8,000 gal Loading and Unloading, X
Used Oil AST Transportation on-site
8

Quantitative Stormwater Results Summary:2017 through 2022
Siemens Energy,Inc--Stormwater Compliance
NPDES Permit No.NCS000021 III i
S&ME Project No.219282
Sampla pate R4infntl Location IDtT69
1'ndn ri90ii T55 a
Bendrnrark V�luus» 30 100 30 30
OF-002NO N3 NDOF-003NO ND ND 1.1
OF-005ND 14 ND 2.1
2.04 inches in 13.5 OF-006NO 230 ND 37
1012372017 Fours OF-007N❑ 95 ND 0.63
OF-010 7.66 NO 12.0 ND C.99
OF-011 W Measurable Discharge at rime afsampGny Ewm
OF-012 Z61 NO 1 27 1 ND 2.1
OF-013 No Measurable Discharge at Time of Sampl!N Event
OF-002 724 NO ND NO 0.79
OF-003 7.41 ND 30 NO 0.82
OF-065 6.96 NO 6.9 ND 0.53
OF-006 8.02 NO ND NO 0,47J
0.71 inches in 13.5 OF-007 7.41 NO NO NO 0,44 J
12/17l2019 hours OF-010 7.00 NO 44 NO 033
OF-DI 1 Na Meal-w Discharge or Time a fSampring Event
OF-012 737 NO 1.7 Nb 059
OF 013 7,17 ND it1 N¢ 029)
OF-014 No Measumble Dschvrge at Time of Sampling Event
OF-015 7.50 NO 22 N0 1.5
OF-002 7.18 NO 3 NO 0.52
OF-003 7.11 ND 2,5 ND 0.89
OF-005 6.79 NO ND NO 0.66
OF-006 1.04 3.49J 71 ND 1.00
OF-007 hro Mevrurab Discharge or Time of Sampling freer
47302020 Z96 inches in 36 hours OF-010 6.91 NO 3.8 NO 0.56
OF-M l No Measurable Dischage at Yme of sampling£.ear
OF-012 7.T2 NO 3,7 ND D48
OF-013 12a No 3-6 ND 0291
OF-014 hro Meatpra61e Dischvrge at rime of vamp["'scent
OF-015 7.07 1"J 7.1 ND 0.81
OF-002 7.43 ND ND ND l.10
OF-003 Ma Mevsurable Ouchvrge at Te'me of5amplirg Even)
OF-005 7.05 ND 21 ND 3.9
OF ON8.02 ND NO ND 7.3
OF-007 era Meawrable D-harge at time of Sampling£vent
7/82021 0.38 inches in 24 hours 0E-010 7.02 NO 1 25 1 NO 13
OF-011 No Mmvroble Discharge at Time of Sampling£vent
OF-012 7.41 NO 56 ND 0,86
OF-013 7.53 NO 1e ND 1,1
OF-ot4 Na Mea WOiuhatge m Timm ofSanp&V E-1
OF�OFS 7.31 NO j 5.7 NO 0.14
2F-002 7.32 4,921 5.1 NO 0,74
OF•003 7.05 2.731 52 NO 1.50
OF-005 7.10 NO 4.7 ND 0.56
OF-006 No Measurable Discharge ar Time of Samp&sg Ewar
OF-007 Na MmsnmbM Discharge az rime of Samping Evens
3192022 2.24 inches in 24 hours OF-010 6.99 NO 1 3.6 1 ND 0,65
Of-011 hha Measurable Discharge ae Time of Sompiing E-1
OF-012 7A3 ND 3.6 NO 0.86
OF-013 7.48 3Js51 4-3 NDQ52
OF-014 Al.Measurable Dischvr9r ar Time of Samplutg Evens
OF-015 7.37 3.917 16 NO 0.73
OF-002 7.41 NO ND NO 0.61
OF-003 7.71 NO ND NO 1.10
OF-005 735 ND 44 NO 0.73
OF-036 hb Measurable Diuharge at Time vfSvmp1m_q E,enr
OF-007 Na Measurable Discharge at Time of Sampling E:ent
12/6/2022 0.26 inches in 24 hours OF-010 8.00 ND 1 54 1 N❑ 092
OF-ail Ab Meorumble D-6a.a at Time of Sampling£reaf
OF-012 726 ND I8$ NO 0A6
-OF- 3 726 NI) 33 N❑ 2h0
OF-Qt4 Nv Mea-vhle Discharge of Time of Sampling IF.&
OF-019 739 NO 1 4.3 ND 0.71
Notes
HEM=n-hexane enractabke material
T55=total suspended solids
NO=Non-Doea;concentration detected was"c iv the laboratory Method Detection Limit(MOL)
1=the reported analyze camentration is between the labaratory MDL and the Method Reporting Limit(MRL)
mg/L=milligrams per liter
('V'g'!L=rnicro�grams per liter
L�J=Concentration is above respective benchmark value

Quantitative Stormwater Results Summary.2017 through 2022
Siemens Energy,Inc.-Stormwater Compliance
NPDES Permit No.NC5000021 ' I
SWE Project No.219282
Bauellma*Valun>> 6-9 so 100 1 30 30
OF-002 7.69 NO NO NO 1.3
OF-003 7.63 NO NO NO 1.1
OF-005 7.15 NO 14 NO 21
2.04 inches in 135 OF-006 &41 NO 230 NO 3.7
10123/M17 hours OF-007 8.12 NO 95 N7 063
OF-010 7.66 ND 12A NO 0.99
OF-011 Ak Meowroble Dischorge at Time o(SomAling Eeeor
OF-012 7,61 NO 1 27 1 NO 21
OF-013 Na Measurable Discharge of Time ofSampfing Event
OF-002 724 ND ND NO 0.79
OF-003 741 ND 3,0 NO 0.82
OF-005 6,98 NO 6.9 NO 0.53
OF-oO6 8-02 NO ND NO 0.471
0.71 inches in 13.5 OF-007 7.41 NO NO NO M44 J
12/17/2019 hours OF-010 7.00 NO 9.4 NO 0.73
OF-011 No Meo We 0-horge a1 Time ofSomph q E-i
OF-012 7.37 ND 2.7 NO 0.59
OF-013 7.17 201 NO I NO 0291
OF-014 At Meosumbk 06chorge of Time of Samphrq Ewm
OF-015 7.10 NO 22 NO 1.5
OF-002 7.18 ND NO3 0.62
OF-003 7.11 ND 2.5 NO 0.89
OF-005 6.79 NO NO NO 068
OF-OM 7,04 3A91 71 ND 1,00
OF-007 No Measurable Discharge at Time of Sampling Event
4730/2C20 2-96 inches in 36 hours OF-010 6.91 ND j 3.8 1 NO 0.56
OF-0T l No t-leowrabk Discharge or Time of Sampling E-r
OF-012 7.12 3.7 NO ORS
OF-013 728 ND N❑ Ili ND 0.29J
OF-014 Ab Measurable Discharge m Time of Sampli Event
OF-015 7.07 3.17J 7.1 N❑ OB1
Of-002 7A3 NO NO NO 1.10
Of-003 No Measurable Discharge or Tlam of Sampling Eeenr
OF-0OS 7.05 NO 21 ND 3.9
OF-OW8.02 NO ND ND 7.3
OF-007 No Measurable Dicharge at Time o(Sem,plirrg Evenr
71WO21 0.38 inches in 24 hours OF-010 7.02 NO 25 NO 1.7
OF-011 lvo Measurable Durharge at Timea(Sampling Fvrnt
OF-012 741 NO 16 NO 0.8fi
OF-013 7-53 NO 10 NO 1.1
OF-014 Nn Meorurabk Discharye of lime of"Ong Event
OF-015 7.31 N❑ 57 NOMa5
OF-002 732 431.J SA NOOF-003 7,05 2331 &2 NOOF-005 7,ID NO 4.7 ND
OF-006 No Mean mNe Pa<horge a1 Time of Sampling FW-r
OF-001 Na Meararable Discharge or Time afsompling Fmi
3/9/2022 224 inches in 24 hours OF-010 6,99 NO 3-6 NO 0.65
OF-011 Na Meosurahre pirrharge at 7 me of Sampliry Fwm
OF-012 7.41 ND 3.6 N❑ 088
6F-013 1Aa 3.85J 4-3 ND 0.57
OF-014 No Measurable Duchorge o1 Time of Sampling E-I
OF-015 7.37 3.911 16 NO 0.73
OF-002 741 NO ND NO 0,61
OF-003 7,71 NO NO ND 1,10
OF-005 7.3S NO 4.0 NO 0,73
OF-MG No Measurable Duchorge of Time of Sompl ng£nenl
OF-007 No f4eosurobit Dishorge Tim of of Somptmg Esenr
12/6/2022 0.26 inches in 24 hours OF-OTO 9.00 NO 5.4 NO 0.82
OF-01 I No Meal tde Dicharge or Time of sampling Event
017412 7.26 NO 8.5 NO 0,46
OF-013 726 NO 33 NO 2.00
OF-014 No Me-rubk Discharge at TW"of sampling Ewiv
OF-015 7.39 NO 1 4.3 ND 0,71
Notes:
HEM=n-hexane Wractable material
T55=totai suspended sdids
NO=Non-Detect:coslcentratlon defected was below the laboratory Method Oetecsion Limit(MOL)
J=the reported analyte concentration is between the labwamry VOL and the Method Reporting Limit(MRL)
mg/L=milligrams per liter
Y/1 microgram per liter
=Concentration is above respective benchmark value

Quantitative 5tormwater Results Summary:2017 through 2022 =---
Siemens Energy,Inc.•Stormwater Compliance
NPDES Permit No.NCS000021 t
S&NFE Project No.219252
dp" rr+`t1u rtg l TSS by t n b0r` o trn9en
r
Benchmark VA.-> 6.5 30 100 30 30
OF-W 7.69 NO NO ND 1.3
OF-003 7.63 NO NO NO 1.1
OF-005 7.15 NO 14 NO 21
204 inches in 13-5 0f-006 8.41 ND 230 NO 3.7
10/23/2017 boom Ol 8.12 ND 95 NO 0.63
OF-010 7.66 NO 12,0 NO 099
OF-011 No Mearumbk Discharge at Time a1 Sampling Event
OF-012 7,61 NO 1 27 NO 2.1
OF-013 No Measu able Dircharge at Time of Sumphl Event
OF-(102 724 N❑ NO N❑ 0.79
OF-003 7A1 ND 3�0 Np 0.82
OF-005 6,98 Np 69 NO 0.53
OF-W6 8,02 NO NO NO GAT
0,71 inches in 135 OF-007 7.41 NO NO NO OA41
12/17/2019 OF-Diu 7A0 NO 94 NO 0.73
houm OF-011 Nd Measurable Dulharge of Time af5amphV Event
OF-012 7.37 NO 2.7 NO 059
OF-013 7.17 NO NO NO 0291
OF-014 Ma MeaswoMe CiscFarge ai Time of Sompleg£.rut
OF-015 7.10 NO 22 NO 1.5
OF-002 7.16 NO 3 N❑ 0.62
OF-003 7.11 NO 2.5 NO 0.89
OF-005 6.79 NO NO NO 0.68
OFM6 7.04 3.49J 71 NO 1.00
OF-007 M Measurobk Descharge of Fine of S-Pimli Event
4/30/2020 2,96 inches in 36 hours OF-010 6.91 NO 38 1 NO 0.56
OF-011 No Meawmble Discharge at Time of Somp4ng Event
2F-012 7.12 NO 3-7 ND 0.48
OF-011 7.28 NO 3.8 NO 0291
Of-014 No M vr.nable Discharge m Time of Sampfeng Eeenr
OF-015 7.07 3;71 7.3 NO 0.81
OF- 743 ND ND NO 110
OF-003 No Meatumble Discharge m rime of Sampling vent
OF-005 7.05 ND 1 21 i NO 3,9
OF-006 8.02 NO NA I NO 73
OF-007 No MI-mbk Discha of Tmr of5ampling E�enr
7/82021 0.38 inches In 24 hours OF-010 7.02 NO 25 ND 1.7
OF-011 No Mearumbk DixtraW m Time of Sampling Event
OF-012 7A1 NO 16 NO 0.86
OF-013 7.53 ND 10 NO T.1
OF-1114 No Meommhle Discharge or Time of sampling[vent
OF-015 7,31 NO 57 NO 074
OF-002 7.32 4A2 J 5,1 NO 0.74
(OF-003 7.05 2.73 J 5,2 NO 1.50
OF-005 7.10 NO 4.7 NO (156
OF-006 No hku mble Discharge at Time of Sampling Ewnt
OF-007 Na Mearumbk Dwhotge W Time of SompLng tsenr
31920V 2.24 inches in 24 hours OF-010 699 N❑ 36 NO 0.65
OF011 No Memurnble Duchorge at rime of sampfiV(sent
OP-012 7.43 NO 3-6 N❑ 0118
OF-013 7.48 1 3851 1 4.3 N❑ 052
OF-014 hlo Measarabk Discharge at rime of SonmItng Fvent
OF-015 7.37 3.911 16 ND 0.73
OF-002 741 NO ND ND 061
OF-003 7.71 NO ND ND 1.10
OF-005 7.35 ND 4.0 ND 073
OF-006 NJ Meorwoble Dirrharge of Tme of Sampling 6-1
OF-007 NP r,-.bk i,W Time of SomPTv DiscW ,9 Esenl
12/6/2022 0.26 inches in 24 hours OF-010 &DD No 5A NO 0.62
OF-031 Na Mearumbk Discharge or Time of Sampling Event
OF-012 726 NO 8.5 ND 0.46
OF-013 T.26 NO 3.3 NO 2.00
OF-014 No Meorumble Discharge at Time of Sampfng Esrnr
OF-0I5 7.39 NO 1 4.3 NO 0.71
N4t[}:
HEN-n-herane e>;rractable material
TSS=total suspended solids
NO-Nan-Detect romentration detected was below the laboratory Meti l Detection limit(MOLS
J=the reported analyte conceniratien is between the laboratory MDL and the Method Reporting Limit(MRq
nrl=milligrams per liter
Ip A= cr rams per liter
=Concentration is ahove respertive benchmark value

Stormwater Discharge outfall(SDO)Visual Monitoring Results Summary:2017 through 2022 t.
Siemens Energy,Inc.-Stormwater Compliance �`■' �`�"
NPDES permit No.NCS000021
S&ME Project No.219282
7W7 OF-002 Tan None 3 2 4 No Yes None Nei-r_
OF-003 Tan/Light Tan None 3 3 2 No No _ None None
OF-005 Tan None 4 4 4 No No Very slight sheen on water None
2A4 inches in 13.5 OF-006 Brown/Light Blown None 5 3 6 No No Very low flow,organics present None
1 012 3/2 0 1 7 hours OF-007 Very Light Tan None 2 2 2 No No None None
OF-010 Tan None 4 2 4 Yes No None None
OF-011 No Measurable Discharge of Time of Sampling Event
kOF(U)07
Light Tan None 3 2 2 No No None None
No Measurable Discharge at lime of Sampling Evenf
Very Light Tan None 3 2 4 Yes Yes Minor areas of foam slightly downstream from outfall None
ti ht Brown None 3.0 2 3 No No None None
Li ht Tan None 4 3 4 No No None None
Li ht Brown/Tan None 4 2 4 No No None None
0.71 inches in 13.5 Light Tan None 2 2 3 No No Some areas of foam at top of riprap channel-not at outfall None
1211712019 hours OF-010 Tan/Light Tan None 3.0 2 3 Yes No Minor areas of foam at edge of concrete flared end None
OF-011 No Measurable Discharge at Time of Sampling Event
OF-012 Clear to Tan None 2 2 2 No No None None
OF-013 CSeartoTan None 2 1 2 No No None None
OF-014 No Measurable Discharge at time of Sampling Event
OF-015 Orange to Brown ND 22 3 7 No No None None
OF-602 Light Brown Slight Organic 7 7 7 No No Non-oil related sheen observed on water None
OF-003 Tan to Light Brown None 4 4 5 No No None None
OF-005 Tan None 2 1 2 No No None None
OF-006 Light Brown None 6 1 5 No No None None
2.96 inches in 36 OF-007 No Measurable Discharge at Time of Sampling Event
4/30/2020 OF-010 Light Tan None 3 3 4 Yes No None None
hours OF-011 No Measurable Discharge at Time of Sampling Even;
OF-012 Li htTan None 2 2 2 No No None None
OF-013 Light Tan None 2 2 2 No No None None
OF-014 No Measurable Discharge at Time of Sampling Event
OF-015 Light Orange/Brown None 8 8 5 I No No None None
OF-002 Clear None 2 1 200 1 No No None None
OF�003 No Measurabie Discharge at Time of Sampling Event
0F•005 Tan None 2 5 5 Yes No None None
OF-0% Clear None 1 1 1 Yes No None None
0.38 inches in 24 OF-007 No Measurabie Discharge at Time of Sampling Event
7/012021 OF-010 Tan None 3 3 3 No No None None
hours
OF-011 No Measurabie Discharge of Time of Sampling Event
OF-012 Light Tan Atone 2 2 2 No No None None
OF-013 Light Tan None 2 3 3 No No None None
OF-014 No Measurable Discharge at Time ofSamphng Event
OF-015 Clear None 1 2 2 No No None None
OF-002 Light Tan None 2 1 2 No No None None
OF-003 Tan None B 1 1 No No None None
OF-005 Clear None 1 1 1 Yes No None None
OF-006 No Measurable Discharge at Time of Sampling Event
2.24 inches in 24 OF-007 No Measurabia Discharge at Time of Sampling Event
3/9/2022 OF-01C Tan None 2 3 Yes No None None
hours
OF-011 No Measarabfe Discharge of Time of Sampling Event
OF-012 Light Tan I None 2 1 1 Yes No None None
OF-013 Clear None 1 1 1 No No None None
OF-014 No Measurabie Discharge of Time of Sampling Event
OF-015 Tan None 5 5 S No No None None
OF-002 Clear None 1 1 1 No No None None
OF-003 Clear None 21 1 No No None None
OF-005 Clear None 1 1 1 No No None None
OF-006 No Measorahie Discharge of Time of Sampling Event
0.26 inches in 24 OF-OD7 No Measurabie Ditcharge at rune of Sampling Event
12/6/2022 hours OF-010 Light Tan None 2 2 2 1 Yes I No None None
OF-011 No Measurabie Discharge or Time of Sampling Event
OF-012 Yellowish Tint None 2.0 3 3 Yes No None None
OF-013 Clear None 1 1 1 No No None None
OF-014 No Measarabie Discharge at Time of Sompfing Event
OF-015 Clear None 1 1 1 1 Yes I No None None

Stormwater Discharge Outfall(SDO)Visual!Monitoring Results Summary.2017 through 2022 =_
Siemens Energy,Inc.-Stormwater Compliance
NPDES Permit No.NCS000021
S&ME Project No.219282
OF-002 Tan None 3 2 4 No Yes None None
OF-003 Tan/Light Tan None 3 3 2 No No None None
OF-005 Tan None 4 4 4 No No Very slight sheen on water None
2.04 inches in 13.5 OF-006 Brown/Light Brown None 5 3 6 No No Very low flow,organics present None
1012312017 hours OF-007 Very Light Tan None 2 2 2 No No None None
OF-010 Tan None 4 2 4 Yes No None None
OF-oil No Measurable Discharge or Time of Sampling Event
OF-012 Light Tan None 3 2 2 No No None None
OF-013 No Measurable Discharge at Time of Sampling Event
OF-002 Very Light Tan None 3 2 4 Yes Yes Minor areas of foam slightly downstream from outfall None
OF-003 Light Brown None 3.0 2 3 No No I None None
OF-005 Light Tan None 4 3 4 No No None None
OF-006 Light Brown/Tan None 4 2 4 No No None None
0.71 inches in 13.5 OF-007 Light Tan None 2 2 3 No No Some areas of foam at top of riprap channel-not at outfall None
1 2117/2 01 9 OF-010 Tan/Light Tan More 3.0 2 3 Yes No Minor areas of foam at edge of concrete Bared end None
hours OF-011 No Measurable Discharge at Time of Sampling Event
OF-012 Clear to Tan None 2 2 2 No No None None
OF-013 Clear to Tan None 2 1 2 No No None None
OF-014 No Measurable Discharge at Time of 5amp8ng Event
OF-015 Orange to Brown ND 22 3 7 No No None None
OF-002 Light Brown Slight Organic 7 7 7 No No Non-oil related sheen observed on water None
OF-003 Tan to Light Brown None 4 4 5 No No None None
OF-MS Tan None 2 1 2 No No None None
OF-006 Li ht Brown None 6 1 5 No No None None
296 inches in 36 OF-007 No Measurable Discharge at Time of Sampling Event
4/30/2020 OF-010 Light Tan None 3 3 4 Yes No None None
hours OF-011 No Measurable Discharge at Time of Sampling Event
OF-012 Light Tan None 2 2 2 No Nn None None
OF-013 Light Tan None 2 2 2 No No None None
OF-014 Na Measurabte Discharge at IIme of sampling Event
OF-015 Light Orange/Brown None B B 5 No No None None
OF-002 Clear None 2 1 2.00 No No None None
OF-003 No Measurable Discharge of Time of Sampling Event
OF-005 Tan None 2 5 5 Yes I No None None
OF-006 Clear None 1 1 1 Yes I No None None
0.36 inches in 24 OF-007 No Measurable Discharge at rime of Sampling Event
7/5/2021 hours OF-010 Tan None 3 3 3 1 No I No None None
OF-011 No Meosurobfe Discharge at Time of Sampling Event
OF-012 Light Tan None 2 2 2 No T No None None
OF-013 Li hlTan None 2 3 3 No I No None None
OF-014 No Measurable Discharge at Time of Sampling Fvew
OF-01s Clear None 1 2 2 No No None None
OF-002 Light Tan None 2 1 2 No No None None
OF-003 Tan None B 1 1 No No None None
OF-005 Clear None l 1 1 Yes No None None
OF-006 No Measurable Discharge at Time of sampling Event
2.24 inches in 24 OF-007 No Measurable Discharge at rime of Sampling Event
3/9/2022 hours OF-010 Tan None 2 3 3 1 Yes I No None None
OF-011 No Measurable Dischorge of Time of Sampling Event
OF-012 Light Tan None 2 1 1 Yes Np None None
OF-013 Clear None 1 1 No No None None
OF-014 No Measurable Discharge at Time of sampling Event
OF-015 Tan None 5 5 5 No No None None
OF-002 Clear None 1 1 1 No No None None
OF-003 Clear None 2 1 1 No No None None
OF-005 Clear None 1 1 1 No No None None
OF-006 No Measurable Discharge at Time of Sampling Event
0.26 inches in 24 OF-007 No Measurable Discharge at Tone of Sampling Event
12161222 0 hours OF-010 Light Tan None 2 2 2 1 Yes Na None None
OF-011 No Measurable Discharge at Time of sampling Event
OF-012 Yellowish Tint None 2,0 3 3 Yes No None None
OF-013 Clear None 1 1 1 No No None None
OF-014 No Measurable Discharge at Time of Sampling Event
OF-015 Clear None 1 1 1 1 Yes I No None None

SIEMENS
enemy August 11, 2023
Summary of Best Management Practices and Significant Industrial Activity Changes
Best management practices onsite include a preventative maintenance and housekeeping program. Outside
equipment are routinely inspected and serviced to maintain good working order. Grounds are maintained and
cleaned of debris. Containerized products and wastes are stored within secondary containment structures that are
routinely monitored and cleaned. Any accumulated stormwater is visually inspected before draining and
documented on inspection forms. Metal recycling roll offs are located under covered storage. Scrap equipment is
drained, cleaned, and covered if needed prior to stockpiling or sending off for recycling.
There have not been any significant industrial activity changes since last renewal of this permit.
Siemens Energy is a trademark licensed by Siemens AG. Page 1 of 1

SIEMENS
e n e rey August 11, 2023
Summary of Best Management Practices and Significant Industrial Activity Changes
Best management practices onsite include a preventative maintenance and housekeeping program. Outside
equipment are routinely inspected and serviced to maintain good working order. Grounds are maintained and
cleaned of debris. Containerized products and wastes are stored within secondary containment structures that are
routinely monitored and cleaned. Any accumulated stormwater is visually inspected before draining and
documented on inspection forms. Metal recycling roll offs are located under covered storage. Scrap equipment is
drained, cleaned, and covered if needed prior to stockpiling or sending off for recycling.
There have not been any significant industrial activity changes since last renewal of this permit.
Siemens Energy is a trademark licensed by Siemens AG. Page 1 of 1

STORMWATER POLLUTION PREVENTION PLAN
DEVELOPMENT AND IMPLEMENTATION
CERTIFICATION
North Carolina Division of Energy, Mineral, and Land Resources—Stormwater Program
Facility Name: Charlotte Turbine Generator Service Center
Permit Number: NCS000021
Location Address: 5101 Westinghouse Blvd.
Charlotte,HC 28273
County:
Mecklenburg
"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 STO WATER POLLUTION PREVENTION PLAN WITH THIS CERTIFICATION.
Signature Date ` 0 2-3 -0E3`11 0
k)-P LA96c6 F
Print or type name of person signing above Title
SPPP Certification 10/13

EPA Identification Number NPOES Permit Number Facility Name Form Approved 03105/19
110000349588 NCS000021 Siemens Energy,Inc. OMB No.2040a04
Form U.S.Environmental Protection Agency
1 vioEPA Application for NPDES Permit to Discharge Wastewater
NPDES GENERAL INFORMATION
SECTIONi
1.1 Applicants Not Requiredto 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 Requiredto Submit Farm 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
o_ production facility? currently discharging process wastewater?
n ] Yes 3 Complete Farm 1 No Yes 4 Complete Form 0 No
o- and Form 213. 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,
Q, mining,or silvicultural facility that has not yet commercial,mining,or silvicultural facility that
commenced to discharge? discharges only nonprocess wastewater?
a ❑ Yes> Complete Form 1 []r No Yes 4 Complete Form 0 No
and Form 2D. 1 and Form 2E.
1.2.5 Is the facility a new or existing facility whose
'— discharge is composed entirely of stormwater
a 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- AND LOCATION(40
2.1 Facility Name
Siemens Energy,Inc.
0 2.2 EPA Identification Number
U
0 110000349588
2.3 Facility Contact
Name(first and last) Title Phone number
Richard Pope EQS Manager [phone]
a
Email address
[e-mail]
2.4 Facility Mailing Address
z
Street or P.O,box
5101 Westinghouse Blvd.
City or town State ZIP code
Charlottte NC 28273
EPA Form 3510-1(revised 3-19) Pagel

EPA Identification Number NPOES Permit Number Facility Name Form Approved 03105/19
110000349588 NCS00O021 Siemens Energy,Inc. OMB No.2040-0004
2.5 Facility Location
W Street,route number,or other specific identifier
Q 0 5101 Westinghouse Blvd.
rn
C o County name County code(if known)
g Mecklenburg 590
E City or town State ZIP code
z m Charlotte NC 28273
SECTION1 NAICS CODES1
3.1 SIC Code(s) Description(optional)
3511 Steam,Gas,and Hydraulic Turbines,and Turbine Generator Sets
m
a
a
U
co
U
3.2 NAICS Code(s) Description(optional)
333611 Turbine and Turbine Generator Set Units Manfacturing
U
N
4.1 Name of Operator
Siemens Energy,Inc.
0 4.2 Is the name you listed in Item 4.1 also the owner?
.m
E 0 Yes ❑ No
`o
4.3 Operator Status
❑ Public—federal ❑ Public—state ❑ Other public(specify)
o Private ❑ Other(specify)
4.4 Phone Number of Operator
[phone]
4.5 Operator Address
1�
Street or P.O.Box
E 4400 N Alafaya Trail
.= City or town State ZIP code
0 o Orlando Florida 32826
is U
Q Email address of operator
O See contact information
SECTION1 1 I
5.1 Is the facility located on Indian Land?
a as
_ _j El Yes F-1No
EPA Form 3510-1(revised 3-19) Page 2

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03105/19
110000349588 NC5000021 Siemens Energy,Inc, OMB No.2040.0004
SECTION -/ I
6.1 Existing Environmental Permits(check all that apply and print or type the corresponding permit number for each)
w NPDES(discharges to surface 0 RCRA(hazardous wastes) ❑ UIC(underground injection of
o water) fluids)
L "= NCS000021 NCD079054680
> E:
LU a ❑ PSD(air emissions) ❑ Nonattainment program(CAA) ❑ NESHAPs(CAA)
� 19-068-568
w ❑ Ocean dumping(MPRSA) ❑ Dredge or fill(CWA Section 404) ® Other(specify)
SECTIONI
7A Have you attached a topographic map containing all required information to this application?(See instructions for
specific requirements.)
❑r Yes ❑ No ❑ CAFO—Nat Applicable(See requirements in Form 28.)
SECTION 8.NATURE / I
8A Describe the nature of your business.
Manufacturing and repair of large power generation rotating equipment and associated auxiliaries.
m
c
Co
a
m
z
SECTION •s I
F9.
Does your facility use cooling water?
❑ Yes 0 No 4 SKIP to Item 10.1.
w Identify the source of cooling water.(Note that facilities that use a cooling water intake structure as described at
aU
, = 40 CFR 125,Subparts I and J may have additional application requirements at 40 CFR 122.21(r).Consult with your
75 NPDES permitting authority to determine what specific information needs to be submitted and when.)
CU
a N/A
U �
SECTION
I I 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
apply.Consult with your NPDES permitting authority to determine what information needs to be submitted and
when.)
❑ Fundamentally different factors(CWA ❑ Water quality related effluent limitations(CWA Section
a
Section 301(n)) 302(b)(2))
❑ Non-conventional pollutants(CWA ❑ Thermal discharges(CWA Section 316(a))
Section 301(c)and(g}}
0 Not applicable
EPA Farm 3510-1(revised 3-19) Page 3

EPA Identification Number NPDES Permit Number Facility Name form Approved 03105119
110000349588 NCS000021 Siemens Energy,Inc. OMB No.2040-0004
SECTION • i
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 ❑ w/attachments
0 Section 2:Name,Mailing Address,and Location ❑ wl attachments
E] Section 3:SIC Codes ❑ w/attachments
✓❑ Section 4:operator Information ❑ wl attachments
© Section 5:Indian Land ❑ wl attachments
© Section 6: Existing Environmental Permits ❑ w/attachments
a�
✓❑ Section 7: Map wl topographic
ma Elwl additional attachments
o ❑� Section 8:Nature of Business ❑ wl attachments
© Section 9:Cooling Water Intake Structures ❑ w/attachments
Section 10:Variance Requests ❑ w/attachments
C
❑r Section 11:Checklist and Certification Statement ❑ w/attachments
r
11.2 Certification Statement
U
I certify under penalty of law that this document and all attachments were prepared under my direction or supervision
in accordance with a system designed to assure that qualified personnel properly gather and evaluate the
information submitted. Based on my inquiry of the person or persons who manage the system,or those persons
directly responsible for gathering the information,the information submitted is,to the best of my knowledge and
belief, true,accurate,and complete. I am aware that there are significant penalties for submitting false information,
including the possibility of fine and imprisonment for knowing violations.
Name(print or type first and last name) Official title
Brian Maragno VP Large Generators
S' Date signed
08/10/2023
EPA Farm 3510-1(revised 3-19) Page 4

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
110000349588 NC5000021 SIEMENS ENERGY CHARLOTTE OMB No.2040-0004
Form U.S Environmental Protection Agency
2F :.EPA Application for NPDES Permit to Discharge Wastewater
NPDES STORMWATER DISCHARGES ASSOCIATED WITH INDUSTRIAL ACTIVITY
SECTIONOUTFALL LOCATIONt
1.1 Provide information on each of the facility's outfalls in the table below
Outfall Receiving Water Name latitude Longitude
Number
OF-002 Lake Wylie 35' 8' 36.69" 80° 59' 38.98"
c
0
OF 003 Lake Wylie 35° 8' 51.28" 80° 59' 41.62"
c�
0
'-� OF-005 Lake Wylie 35° 8' 28.54" 80, 59' 29.72"
is
Facility O
OF-006 Spray Y Pond 35° 8' 37.28" 80° 59' 25.41"
OF 017 Facility Spray Pond 350 8' 32.77" 80° 59' 24.95"
OF-008 Faci I ity Sp ray Po nd 35° 8' 31.55" 80' 59' 26.95"
IMPROVEMENTSSECTION 2. t
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.
2.2 Briefly identify each applicable project in the table below.
Brief Identification and Affected Outfalls Final Compliance Dates
Description of Project (list cuffall numbers) Source(s)of Discharge
Required Projected
w
c
m
E
0
0
n
E
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 ❑ No
EPA Form 3510.21F(Revised 3-19) Pagel

EPA Identification Number NPOES Permit Number Facility Name Form Approved 03105/19
110000349588 NCS000021 SIEMENS ENERGY CHARLOTTE OMB No.2040-0004
SECTIONti• 1
4 3.1 Have you attached a site drainage map containing all required information to this application?(See instructions for
°i M R specific guidance.)
a` ® Yes ❑ No
SECTION 4. •O 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 mite radius of the facility)
specify units specify units
OF-002 5.1 acres 8.4 acres
specify units specify units
OF-003 11.6 acres 16.0 acres
specify units specify units
OF-005 3.05 acres 3.2 acres
specify units specify units
OF-006 3.9 acres 6.3 acres
specify units specify units
OF-007 1.9 acres 2.4 acres
specify units specify units
OF-008 0.6 acres 0.6 acres
4.2 Provide a narrative description of the facility's significant material in the space below. (See instructions for content
requirements.)
See attachment
m
y
C
[tl
7
O
Q
4.3 Provide the location and a description of existing structural and non-structural control measures to reduce pollutants in
stormwater runoff. See instructions forspecificguidance.)
Stormwater Treatment
Codes
Outfall from
Number Control Measures and Treatment Exhibit
2F-1
(list)
OF-002 Spill Prevention,Control,and Countermeasure Plan;visual inspections, housekeeping,preve Not Applica
OF-003 Spill Prevention,Control,and Countermeasure Plan;visual inspections, housekeeping,preve Not Applica
OF-005 Spill Prevention,Control,and Countermeasure Plan;visual inspections,housekeeping, preve Not Applica
OF-006 Spill Prevention,Control,and Countermeasure Plan;visual inspections,housekeeping,preve Not Applica
OF-007 Spill Prevention,Control,and Countermeasure Plan;visual inspections,housekeeping,preve Not Applica
OF-008 Spill Prevention,Control,and Countermeasure Plan;visual inspections,housekeeping,preve Not Applica
EPA Form 3510-2F(Revised 3-19) Page 2

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03105/19
110000349588 NCS000021 SIEMENS ENERGY CHARLOTTE OMB Nu.2o4M004
Form U.S Environmental Protection Agency
2F 4'CPA Application for NPDES Permit to Discharge Wastewater
NPDES G l'"'� STORMWATER DISCHARGES ASSOCIATED WITH INDUSTRIAL ACTIVITY
SECTION 1.OUTFALL LOCATION r
1.1 Provide information on each of the facili 's outfalls in the table below
Outfall Receiving Water Name Latitude Longitude
Number
OF-010 facility Spray Pond 35' 8' 34.95" 80, 59' 23.52"
rW
0
OF-011 Lake Wylie 35` 8' 55.28" 80` 59' 26.60"
U
D
J OF-012 Lake Wylie 35' 8' 41.72" 80° 59' 51.85"
p OF-013 Lake Wylie 35` 8' 40.21" 8o* 59' 43.99"
OF-014 Lake Wylie 35' 8' 37.40" 80° 59' 54.36"
OF-015 Lake Wylie 35" 8' 13.53" 80, 59' 34.43"
SECTION • • 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 -*SKIP to Section 3.
2.2 Briefly identify each applicable project in the table below.
Brief Identification and Affected Outfalls Source(s)of Discharge Final Compliance Dates
Description of Project (listouftall numbers)
Required Projected
w
c
as
E
m
0
Q-
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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 ❑ No
EPA Form 3510.2F(Revised 3-19) Page 1

EPA Identiftcation Number NPDES Permit Number Facility Name Form Approved 03105/19
110000349588 NCS000021 SIEMENS ENERGY CHARLOTTE OMB No.2040-0004
SECTION1 ' I
W 3.1 Have you attached a site drainage map containing all required information to this application?(See instructions for
W R specific guidance.)
o ® Yes ❑ No
SECTIO 4.POLLUTANT SOURCESi CFR 1122.26(c)(I)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) (wllhin a mile radius of the facility)
specify units specify units
OF-010 5.2 acres 16.8 acres
specify units specify units
OF-Oil 4.2 acres 7.8 acres
specify units specify units
OF-012 16.8 acres 22.6 acres
specify units specify units
OF-013 8.0 acres 11.8 acres
specify units specify units
OF-014 D,1 acres 2.9 acres
specify units specify units
OF-015 0.2 acres 3.1 acres
4.2 Provide a narrative description of the facility's significant material in the space below.(See instructions for content
requirements.)
See attachment
w
m
0
c
0
d
4.3 Provide the location and a description of existing structural and non-structural control measures to reduce pollutants in
stormwater runoff. See instructions forspecificguidance.)
Stormwater Treatment
Codes
Outfall from
Number Control Measures and Treatment Exhibit
2F-1
list
OF-010 Spill Prevention,Control,and Countermeasure Plan;visual inspections,housekeeping,preve Not Applica
OF-011 Spill Prevention,Control,and Countermeasure Plan;visual inspections,housekeeping,preve Not Applica
OF-012 Spill Prevention,Control,and Countermeasure Plan;visual inspections,housekeeping,preve Not Applica
OF-013 Spill Prevention,Control,and Countermeasure Plan;visual inspections,housekeeping,preve Not Applica
OF-014 Spill Prevention,Control,and Countermeasure Plan;visual inspections,housekeeping,preve Not Applica
OF-015 Spill Prevention,Control,and Countermeasure Plan;visual inspections,housekeeping,preve Not Applica
EPA Form 3510-21F(Revised 3-19) Page 2

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
110000349588 NCS000021 SIEMENS ENERGY CHARLOTTE OMB No.2040-0004
SECTION •N STORMWATER 1 I
5.1 l certify under penalty of law that the outfall(s) covered by this application have been tested or evaluated for the
presence of non-stormwater discharges. Moreover, l 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
Signature Date signed
Fn 5.2 Provide the testing information requested in the table below.
Onsite Drainage Points
y Outfall
Number Description of Testing Method Used Date(s)of Testing Directly Observed
a
During Test
m
NA
0
c
0
Z
SECTIONOR I 1
6.1 Describe any significant leaks or spills of toxic or hazardous pollutants in the last three years.
None.
`o
Cal
Y
Qf
J
f9
U
w.
SECTIONDISCHARGE INFORMATIONI
See the instructions to determine the pollutants and parameters you are required to monitor and,in turn,the tables you must
a com lete. Not all applicants need to complete each table.
7.1 Is this a new source or new discharge?
❑ Yes-+ See instructions regarding submission of No 3 See instructions regarding submission of
estimated data. El actual data.
Tables A, B,C,and D
7.2 Have you completed Table A for each outfall?
❑ Yes El No
EPA Form 3510-2F(Revised 3-19) Page 3

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
110000349588 NCS000021 SIEMENS ENERGY CHARLOTTE 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 and/or(2)subject to effluent limitations in an NPDES permit for the facility's process wastewater?
❑ Yes ❑ No
7.5 Do you know or have reason to believe any pollutants in Exhibit 2F-2 are present in the discharge?
❑ Yes 0 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 ❑ 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?
Cl Yes 0 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
:r
Table C?
c
C ❑ Yes ❑ No
ca
0 7.10 Do you expect any of the pollutants in Exhibit 2F-3 to be discharged in concentrations of 10 ppb or greater?
❑ Yes 0 No 4 SKIP to Item 7.12.
C 7.11 Have you provided quantitative data in Table C for those pollutants in Exhibit 2F-3 that you expect to be discharged in
a, concentrations of 10 ppb or greater?
R
y ❑ Yes ❑ No
7.12 Do you expect acrolein,acrylonitrile,2,4-dinitrophenol,or 2-methyl-4,6-dinitrophenol to be discharged in concentrations
of 100 ppb or greater?
❑ Yes 0 No-* 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?
❑ 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 2F-4 are present in the discharge?
❑ Yes ❑✓ No-> SKIP to Item 7.17.
7.16 Have you listed pollutants in Exhibit 2F-4 that you know or believe to be present in the discharge and provided an
explanation in Table C?
❑ Yes ❑ No
7.17 Have you provided information for the storm event(s)sampled in Table D?
0 Yes ❑ No
EPA Form 3510-2F(Revised 3.19) Page 4

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03105/19
1100D0349588 NCS000021 SIEMENS ENERGY CHARLOTTE OMB No.2040-0004
Used or Manufactured Toxics
7.18 Is any pollutant listed on Exhibits 2F-2 through 2F-4 a substance or a component of a substance used or
o manufactured as an intermediate or final product or byproduct?
c a ElYes ElNo 4 SKIP to Section 8.
0
7.19 List the pollutants below,including TCDD if applicable,
E
`o
1.Nitrate-nitrite 4. Phosphorus(as P),total 7. Iron,total
m
rn
t 2• Nitrogen,total organic(as N) 5,Surfactants 8- Molybdenum,total
2
a 3.Oil and grease 6•Aluminum,total 9• Chromium,total
SECTION 8.BIOLOGICAL TOXICITY TESTING DATA I
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?
a
❑ Yes 0 No 4 SKIP to Section 9.
r
8.2 Identify the tests and their purposes below.
Submitted to NPDES
W Test(s) Purpose ofTest(s) Date Submitted
x Permitting Authori ?
0
H
❑ Yes ❑ No
0
❑ Yes ❑ No
m0
❑ Yes ❑ No
INFORMATIONSECTION 9.CONTRACT ANALYSIS I
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 laboratorylfirm ENCO Laboratories S&ME,Inc.
0
M
E
0
N Laboratory address 102-A Woodwinds Industrial 2016 Ayrsley Town Blvd.,
a1 Court,Cary,North Carolina Suite 2-A,Charlotte,North
c 27511 Carolina 28273
a
o Phone number
Ca [phone] (7041523-4726
Pollutant(s)analyzed Nitrate/Nitrite as N,pH, Consulting firm-S&ME,
Temperature,Total Kjedahl subcontract laboratory for
Nitrogen,Total Nitrogen,Total analysis is ENCO.
Suspended Solids
EPA Form 3510-2F(Revised 3-19) Page 5

EPA identification Number NPDES Permit Number Facility Name Farm Approved 03/05119
110000349588 NCS000021 SIEMENS ENERGY CHARLOTTE OMB No,2040.0004
g Used or Manufactured Toxics
7.18 Is any pollutant listed on Exhibits 2F-2 through 2F-4 a substance or a component of a substance used or
omanufactured as an intermediate or final product or byproduct?
c
❑ Yes ❑ No 4 SKIP to Section 8.
0
E 7.19 List the pollutants below, including TCOD if applicable.
0
1.Copper,total 4. 7.
m
rn
2• Nickel,total 6• 8.
U
�2
R 3.Antimony,total 6. 9•
SECTION • •GICAL TOXICITY TESTING I i
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?
a
U)
❑ Yes ❑ No 4 SKIP to Section 9.
4) 8.2 Identify the tests and their purposes below.
Test(s) Purpose of Test(s) Submitted to NPDI±B Date Submitted
Permitting Authori
0
❑ Yes ❑ No
c�
o ❑ Yes ❑ No
0
m ❑ Yes ❑ No
SECTIO 9.CONTRACT •' • i
9.1 Were any of the analyses reported in Section 7(on Tables A through C)performed by a contract laboratory or
consulting firm?
❑ 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 laboratory/firm
0
E
0
N Laboratory address
c
U
L
0
Phone number
ca
Pollutant(s)analyzed
EPA Form 3510-2F(Revised 3-19) Page 5

EPA Identification Number NPIJES Permit Number Facility Name Form Approved 03/05/19
110000349588 NCS000021 SIEMENS ENERGY CHARLOTTE OMB No.2040-0004
SECTION1 CHECKLIST AND CERTIFICATION STATEMENT(40
10.1 In Column 1 below, mark the sections of Form 2F that you have completed and are submitting with your appiica#ion. For
each section,specify in Column 2 any attachments that you are enclosing to aiert the permitting authority. Note that not
all applicants are required to com Iete all sections or provide attachments.
Column 1 Column 2
ID Section 1 wl attachments(e.g.,responses for additional outfalls)
Z Section 2 ❑ wl attachments
r❑ Section 3 [] wl site drainage map
✓❑ Section 4 r❑ wl attachments
0 Section 5 ❑ wl attachments
0 Section 6 ❑ wl attachments
G
E 0 Section 7 ❑ Table A ❑ wl small business exemption request
is
❑ Table B wl analytical results as an attachment
0
w ❑ Table C ❑ Table D
❑ Section S ❑ wlattachments
G
❑ Section 9 ❑ wlattachments(e.g., responses for additional contact laboratories or firms)
Y
❑ Section 10 ❑
U
10.2 Certification Statement
I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in
accordance with a system designed to assure that qualified personnel properly gather and evaluate the information
submitted. Based on my inquiry of the person or persons who manage the system or those persons directly responsible
for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and
complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine
and imprisonment for knowing violations.
Name(print or type first and last name) Official title
6ew em-ao
Sign re Date signed eon
EPA Form 351 D-2F(Revised 3-19) Page 6

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 0310509
110000349588 NCS000021 SIEMENS ENERGY CHARLOTTE SEE ATTACHED TABLE OMB No.2040-0004
TABLE A.CONVENTIONAL AND NON CONVENTIONAL1
You must provide 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 requirements.
Maximum Daily Discharge Average Daily Discharge Source of
(specify units) (specify units) Number of Storm Information
Pollutant or Parameter Grab Sample Taken Flow-Weighted Grab Sample Taken Flow-Weighted Events Sampled (new sourceinew
During First During First dischargers only;use
30 Minutes Composite 30 Minutes Composite codes in instructions)
1. Oil and grease
2. Biochemical oxygen demand (BOD5)
3. Chemical oxygen demand (COD)
4. Total suspended solids(TSS)
5. Total phosphorus
6. Total Kjeldahl nitrogen(TKN)
7. Total nitrogen(as N)
pH(minimum)
8.
pH(maximum)
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

This page intentionally left blank.

EPA Identification Number NPOES Permit Number Facility Name Outtall Number Form Approved 03105l19
110000349588 NCS000021 SIEMENS ENERGY CHARLOTTE SEE ATTACHED TABLE 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
(specify units) (specify units) Number of Storm Information
Pollutant and CAS Number(if available) Grab Sample Taken Flow-Weighted Grab Sample Taken Flow-Weighted Events Sampled (new source/new
During First During First 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 3510-2F(Revised 3-19) Page 9

This page intentionally left blank.

EPA Identification Number NPDES Permit Number Facility Name Outfall Number J Form Approved 03/05119
110000349588 NCS000021 SIEMENS ENERGY CHARLOTTE SEE ATTACHED TABLE OMB No.2040-00D4
TABLE C.TOXIC POLLUTANTS, CERTAIN HAZARDOUS SUBSTANCES,AND ASBESTOS(40 CFR 122.26(c)(1)(i)(E)(4)and 40 CFR 122.21(g)(7)(vi)(B)and (vii))'
List each pollutant shown in Exhibits 2F-2,2F-3,and 21` 4 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
s e ' units (spec units Number of Storm Information
Pollutant and CAS Number(if available) Grab Sample Taken Flow-Weighted flow-Weighted Events Sampled Grab Sample Taken (new source/new
.'
During First During First 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 3510-2F(Revised 3-19) Page 11

This page intentionally left blank.

EPA Identification Number NPDES Permit Number Facility name Oultall Number Form Approved 03105119
110000349588 NCSOOOD21 SIEMENS ENERGY CHARLOTTE SEE ATTACHED TABLE OMB No.2040-0004
TABLE D.STORM EVENT INFORMATION40
Provide data for the storm event(s)that resulted in the maximum daily discharges for the Flow-weighted composite sample.
Number of Hours Between
Total Rainfall during Maximum Flow Rate
Duration of Storm Event Beginning of Storm Measured and Total Flow from Rain Event
Date of Storm Event tin hours) Storm Event End of Previous Measurable Rain During Rain Event (in gallons or specify units)
(in inches) Event (in gpm or specify units)
Provide a description of the method of flow measurement or estimate.
EPA Form 3510-2F(Revised 3-19) Page 13