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Industrial stormwater facility

Siemens Mobility Inc

5S34I029234 · Notice of Intent · Sacramento, Sacramento

Official record — State Water Resources Control Board, Industrial General Permit

Official

Facility record

Facility name
Siemens Mobility Inc
WDID
5S34I029234
Application type
Notice of Intent
City
Sacramento
County
Sacramento
ZIP
95652
Primary SIC code
3743
SIC description
Railroad Equipment
Date active
2021-05-21
Regional Water Board
Regional Board 5 - Central Valley Region

Hydrologic

Geographic context

Official facility coordinate plotted against the official 2026 impaired-water geometry.

Official facility point
38.66304, -121.39329
HUC12 subwatershed
Lower Steelhead Creek
HUC12 code
180201110303
Impaired-water associations (derived)
2
Loading map…

303(d) context

Associated impaired waters

Grouped by derived geographic association class.

Derived

Same impaired-water subwatershed

2 waterbodies
Natomas East Main Drainage Canal (aka Steelhead Creek, downstream of confluence with Arcade Creek)

River & Stream · Integrated Report category 5 · TMDL required

Listed pollutants / stressors (5) Indicator Bacteria, Mercury, Oxygen, Dissolved, PCBs (Polychlorinated biphenyls), Trash

Distance

Confidence low

Fact sheet

Natomas East Main Drainage Canal (aka Steelhead Creek, upstream of confluence with Arcade Creek)

River & Stream · Integrated Report category 5 · TMDL required

Listed pollutants / stressors (1) PCBs (Polychlorinated biphenyls)

Distance

Confidence low

Fact sheet

Associations are calculated from official facility coordinates, USGS HUC12 boundaries, and official 2026 impaired-water geometry. They do not establish a discharge connection or causation.

TMDL requirements

Water Board-stated TMDL waste load allocations applied to this industrial permit in SMARTS.

Official record — SMARTS TMDL dataset, State Water Board

No SMARTS TMDL requirement is recorded for this WDID. In the statewide TMDL export only permits in Regions 4, 8 and 9 currently carry industrial TMDL requirements, so an absence here is not a statement that the facility discharges to an unimpaired water.

Official monitoring

SMARTS monitoring

Self-reported industrial stormwater sampling results as submitted by the discharger to SMARTS.

Official record — SMARTS parameter data, State Water Board
Reported results
132
Sample events
44
Distinct parameters
3
Reporting years
2021 – 2025
First sample
2021-10-20
Latest sample
2026-04-21
Source regional dataset
Region 5S - Sacramento
Source retrieved
Aug 21, 2026

Official SMARTS public reports

Parameters reported

Reported results over time

Loading reported results…

Most recent reported results

Latest 25 of 132
Sample dateLocationParameterResultUnitsEvent
2026-04-21North East DIOil and Grease.72mg/LQualifying Storm Event
2026-04-21North East DIpH7.75SUQualifying Storm Event
2026-04-21North East DITotal Suspended Solids (TSS)30mg/LQualifying Storm Event
2026-04-21North West DIOil and Grease.68mg/LQualifying Storm Event
2026-04-21North West DIpH7.98SUQualifying Storm Event
2026-04-21North West DITotal Suspended Solids (TSS)17mg/LQualifying Storm Event
2026-04-21West DIOil and GreaseND (non-detect / est.)mg/LQualifying Storm Event
2026-04-21West DIpH7.8SUQualifying Storm Event
2026-04-21West DITotal Suspended Solids (TSS)12mg/LQualifying Storm Event
2026-02-16North East DIOil and Grease78mg/LQualifying Storm Event
2026-02-16North East DIpH7.83SUQualifying Storm Event
2026-02-16North East DITotal Suspended Solids (TSS)43mg/LQualifying Storm Event
2026-02-16North West DIOil and Grease2.1mg/LQualifying Storm Event
2026-02-16North West DIpH7.65SUQualifying Storm Event
2026-02-16North West DITotal Suspended Solids (TSS)100mg/LQualifying Storm Event
2026-02-16West DIOil and Grease6.4mg/LQualifying Storm Event
2026-02-16West DIpH7.68SUQualifying Storm Event
2026-02-16West DITotal Suspended Solids (TSS)130mg/LQualifying Storm Event
2026-02-16West side DI Luce BldgOil and Grease1.3mg/LQualifying Storm Event
2026-02-16West side DI Luce BldgpH7.36SUQualifying Storm Event
2026-02-16West side DI Luce BldgTotal Suspended Solids (TSS)76mg/LQualifying Storm Event
2025-11-13North East DIOil and Grease.98mg/LQualifying Storm Event
2025-11-13North East DIpH6.8SUQualifying Storm Event
2025-11-13North East DITotal Suspended Solids (TSS)120mg/LQualifying Storm Event
2025-11-13North West DIOil and Grease.88mg/LQualifying Storm Event

Monitoring rows are official self-reported SMARTS submissions, joined to this facility by WDID. California Stormwater Intelligence does not restate, correct, average or evaluate reported values, and no benchmark comparison or violation determination is made.

YDOS-derived

Numeric Action Level comparison

Reported SMARTS analytical results compared against the Numeric Action Levels of the Industrial General Permit version in effect for each reporting year (July 1 – June 30).

Derived
Reporting years evaluated
5
Years with an NAL exceedance
0
Most recent evaluated year
RY 2025
Ruleset
igp_nal_ruleset_v1 / igp_nal_v1
ParameterNAL typeCalculated valueNALResultSamples usedMethod

Oil and Grease

oil_grease

Instantaneous maximum1 sample above25 mg/LAt or below NALOne eligible result in this reporting year was outside the instantaneous maximum NAL. The Order states the condition as two or more results in one reporting year.15 eligible2 non-detect as zerocount of eligible effluent results outside the instantaneous maximum NAL within the July 1 - June 30 reporting year

pH

ph

Instantaneous maximum0 samples above6 – 9 pH unitsWithin NAL rangeNo eligible result in this reporting year was outside the instantaneous maximum NAL.15 eligiblecount of eligible effluent results outside the instantaneous maximum NAL within the July 1 - June 30 reporting year

Total Suspended Solids (TSS)

tss

Instantaneous maximum0 samples above400 mg/LAt or below NALNo eligible result in this reporting year was outside the instantaneous maximum NAL.15 eligiblecount of eligible effluent results outside the instantaneous maximum NAL within the July 1 - June 30 reporting year

An NAL exceedance is a permit-defined condition that triggers Exceedance Response Actions under the Industrial General Permit. It is not a violation, an enforcement action, or a Water Board compliance determination. Annual values use the arithmetic average of eligible results with non-detects treated as zero; instantaneous maximum NALs (total suspended solids, oil and grease, pH) are exceeded when two or more eligible results in a reporting year fall outside the level. Rules transcribed from 2014-0057-DWQ as amended by 2015-0122-DWQ (effective 2015-07-01, superseded 2020-06-30); 2014-0057-DWQ as amended by 2018-0028-DWQ (effective 2020-07-01).

Provenance

Source & provenance

Source agency
California State Water Resources Control Board
Source dataset
Industrial General Permit — permitted facilities (statewide GIS layer)
WDID
5S34I029234
Source feature ID
14672
Application type
Notice of Intent
Regional board derivation
WDID region prefix
Geometry status
valid
Last successful facility import
Aug 21, 2026, 1:57 AM UTC

Official IGP permitted facilities feature layer