MGM Transformer Company
Active WDID 4 19I024988 Commerce, Los Angeles County Region 4 · Los Angeles
At a glance
- Permit Evidence: SMARTS record
- Active Industrial
- Notice of Intent (WDID code I) · Permits and applications
- Location Evidence: facility-reported
- Commerce, Los Angeles County
- Region 4 · Los Angeles · Location · Statewide map
- Receiving water
- Los Angeles River (as reported by the facility)
- Evidence: candidate, awaiting review Details
- Identified receiving water on the 2026 303(d) list
- Not established
- Shown only when the reported receiving water is identified and corroborated.
- 2026 Integrated Report waters within 1.0 km Evidence: geographic proximity
- None
- Monitoring results Evidence: facility-reported
- 30 distinct results, 4 reporting years (2017 to 2020)
- Most recent sample Jan 25, 2021 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 1 inspection · 6 violation records · 6 enforcement actions
- Counts as published in SMARTS; not a compliance determination · Details
Each label shows where a statement comes from. How to read the labels.
Overview and location
Reported facility location HUC12 watershed Corroborated receiving water 2026 Integrated Report waterbodies nearby
Reported location Evidence: facility-reported
- Coordinates
- 34.00773, -118.14978
- Precision
- 5 decimal places
- Shared point
- No
- Matches application record
- same
Facility location as reported by the discharger in SMARTS; not a discharge point or outfall.
- Facility address
- 5701 Smithway Street, Commerce 90040
- Regional Water Board
- 4 — Los Angeles
HUC12 watershed Evidence: spatial
- Chavez Ravine-Los Angeles River HUC12 180701050401
The facility's reported location lies within this HUC12 watershed (spatial derivation); it is not a discharge location.
Permits and applications Evidence: SMARTS record
Current permit record
- Permit type
- Industrial
- Application type
- Notice of Intent (WDID code I)
- Status
- Active
- Operator
- MGM Transformer Company
- Primary industry (SIC)
- 3612-Power, Distribution, and Specialty Transformers
- Application ID
- 448480
- NOI processed
- Aug 04, 2014
- Last certified
- Aug 19, 2025
- Facility size
- 135000 SqFt
- Impervious area
- 99 %
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 448480 | Industrial | Active | Aug 04, 2014 | — | Aug 19, 2025 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Los Angeles River
- Discharges directly / indirectly
- N / Y (as answered in the permit application)
Evidence: not confirmed Evidence: candidate, awaiting review Awaiting review
Receiving-water text as reported by the discharger in SMARTS; no waterbody identification has been confirmed.
Why it is not confirmed (1)
- C1 name is only a prefix of official names
7 official waterbodies share this name; none is assigned without review.
Impaired waters and TMDLs
Two kinds of information, kept apart: 2026 Integrated Report waterbodies near the reported location (geographic proximity only), and TMDL records that SMARTS lists for this facility. Neither establishes where the facility discharges; see Receiving water for the facility's own statement.
Nearby waterbodies Evidence: geographic proximity
Spatial proximity only; discharge pathway not established. Being near a waterbody does not mean the facility discharges to it.
No 2026 Integrated Report waterbody lies within the proximity threshold of the reported location.
SMARTS TMDL records Evidence: SMARTS-reported
No TMDL records for this facility in the SMARTS TMDL export.
Reported monitoring results Evidence: facility-reported
Numeric Action Level (NAL) screening is being independently validated and is not shown. Nothing on this page states whether a result exceeded a NAL.
30 distinct measurements across 3 parameters, most recent sample Jan 25, 2021.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2020 | 6 | 3 | 0 | Jan 25, 2021 | Jan 25, 2021 |
| 2019 | 6 | 3 | 0 | Mar 13, 2020 | Mar 13, 2020 |
| 2018 | 12 | 3 | 0 | Jan 17, 2019 | Mar 06, 2019 |
| 2017 | 6 | 3 | 0 | Mar 02, 2018 | Mar 02, 2018 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Oil and Grease | mg/L | 10 | 10 | Mar 02, 2018 | Jan 25, 2021 | Results |
| pH | SU | 10 | 0 | Mar 02, 2018 | Jan 25, 2021 | Results |
| Total Suspended Solids (TSS) | mg/L | 10 | 2 | Mar 02, 2018 | Jan 25, 2021 | Results |
All results (30 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Jan 25, 2021 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1140687 | |
| Jan 25, 2021 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1140687 | |
| Jan 25, 2021 | pH | 6.25 | SU | Effluent | Qualifying Storm Event | pH_Field | 1140687 | |
| Jan 25, 2021 | pH | 5.75 | SU | Effluent | Qualifying Storm Event | pH_Field | 1140687 | |
| Jan 25, 2021 | Total Suspended Solids (TSS) | 34 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1140687 | |
| Jan 25, 2021 | Total Suspended Solids (TSS) | 13 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1140687 | |
| Mar 13, 2020 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1102509 | |
| Mar 13, 2020 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1102509 | |
| Mar 13, 2020 | pH | 6.82 | SU | Effluent | Qualifying Storm Event | A4500HB | 1102509 | |
| Mar 13, 2020 | pH | 6.77 | SU | Effluent | Qualifying Storm Event | A4500HB | 1102509 | |
| Mar 13, 2020 | Total Suspended Solids (TSS) | 2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1102509 | |
| Mar 13, 2020 | Total Suspended Solids (TSS) | 2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1102509 | |
| Mar 06, 2019 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1049396 | |
| Mar 06, 2019 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1049396 | |
| Mar 06, 2019 | pH | 6.52 | SU | Effluent | Qualifying Storm Event | A4500HB | 1049396 | |
| Mar 06, 2019 | pH | 6.59 | SU | Effluent | Qualifying Storm Event | A4500HB | 1049396 | |
| Mar 06, 2019 | Total Suspended Solids (TSS) | 57 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1049396 | |
| Mar 06, 2019 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 1049396 | |
| Jan 17, 2019 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1036616 | |
| Jan 17, 2019 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1036616 | |
| Jan 17, 2019 | pH | 6.31 | SU | Effluent | Qualifying Storm Event | A4500HB | 1036616 | |
| Jan 17, 2019 | pH | 6.74 | SU | Effluent | Qualifying Storm Event | A4500HB | 1036616 | |
| Jan 17, 2019 | Total Suspended Solids (TSS) | 54 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1036616 | |
| Jan 17, 2019 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 1036616 | |
| Mar 02, 2018 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 994458 | |
| Mar 02, 2018 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 994458 | |
| Mar 02, 2018 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Field | 994458 | |
| Mar 02, 2018 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Field | 994458 | |
| Mar 02, 2018 | Total Suspended Solids (TSS) | 48 | mg/L | Effluent | Qualifying Storm Event | A2540D | 994458 | |
| Mar 02, 2018 | Total Suspended Solids (TSS) | 3 | mg/L | Effluent | Qualifying Storm Event | A2540D | 994458 |
Results are shown exactly as reported by the discharger. Identical rows repeated in the State's export are shown once. Where the export contains different versions of the same sample and parameter, each version is listed and flagged. Details.
Compliance and enforcement records Evidence: SMARTS record
These are records as the State Water Board publishes them in SMARTS, with the source's own types and statuses. They are not a compliance determination or rating. A record listed here is not proof of a violation beyond what the source states, and the absence of records does not establish compliance.
| Record type | Records | As published | Dates | Retrieved | List |
|---|---|---|---|---|---|
| Violations | 6 | 6 Violation · 0 Potential (preliminary) · 0 Dismissed | Oct 01, 2014 – May 26, 2026 | Oct 21, 2026 | All violations |
| Enforcement actions | 6 | 6 issued · 0 draft · 0 withdrawn, rescinded or superseded | Feb 20, 2018 – Jun 11, 2026 | Oct 21, 2026 | All actions |
| Inspections | 1 | inspections, not findings | May 26, 2026 – May 26, 2026 | Oct 21, 2026 | All inspections |
| Annual reports | 12 | certified reports (contents not shown) | 2015 – 2026 | Oct 21, 2026 | All reports |
| Water-quality-based corrective action reports | 0 | reports, by parameter | — | Oct 21, 2026 |
Each record type is counted by its own SMARTS identifier. A violation and the enforcement action that cites it are two records in two lists; they are never added together.
Chronological record history (25 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Aug 13, 2026 | Annual reports | 1382787 | Annual report 2026 | — | |
| Jul 08, 2026 | Annual reports | 1338608 | Annual report 2025 | — | |
| Jun 11, 2026 | Enforcement actions | 471264 | Verbal Communication | Active | |
| May 26, 2026 | Inspections | 2071207 | NOT | Performed | Additional Info Required |
| May 26, 2026 | Violations | 905308 | Deficient BMP Implementation | Violation | Inspection |
| May 26, 2026 | Violations | 905309 | Incomplete/Insufficient SWPPP | Violation | Inspection |
| Aug 28, 2025 | Annual reports | 1297612 | Annual report 2024 | — | |
| Aug 28, 2025 | Enforcement actions | 458204 | 1st NNC - AR (First Notice of Non-Compliance (annual report)) | Historical | |
| Aug 08, 2025 | Enforcement actions | 457447 | NOV (Notice of Violation) | Historical | |
| Jul 15, 2025 | Violations | 892918 | Late Report | Violation | Report |
| May 15, 2025 | Enforcement actions | 456056 | NOV (Notice of Violation) | Historical | |
| May 15, 2025 | Violations | 891341 | Failure to Notify | Violation | Report |
| Jul 11, 2024 | Annual reports | 1246858 | Annual report 2023 | — | |
| Dec 06, 2023 | Enforcement actions | 451658 | NOV (Notice of Violation) | Historical | |
| Dec 06, 2023 | Violations | 886763 | Incomplete/Insufficient SWPPP | Violation | Report |
| Jul 06, 2023 | Annual reports | 1193028 | Annual report 2022 | — | |
| Jun 10, 2022 | Annual reports | 1116800 | Annual report 2021 | — | |
| Jun 29, 2021 | Annual reports | 1064984 | Annual report 2020 | — | |
| Jul 02, 2020 | Annual reports | 982038 | Annual report 2019 | — | |
| Jun 19, 2019 | Annual reports | 958368 | Annual report 2018 | — | |
| Jul 10, 2018 | Annual reports | 943811 | Annual report 2017 | — | |
| Feb 20, 2018 | Enforcement actions | 429196 | NOV (Notice of Violation) | Historical | |
| Jul 05, 2017 | Annual reports | 883334 | Annual report 2016 | — | |
| Jul 29, 2016 | Annual reports | 844307 | Annual report 2015 | — | |
| Oct 01, 2014 | Violations | 866298 | Deficient Report | Violation | Report |
Sources and provenance
| Information | Source | Retrieved or published |
|---|---|---|
| Permit, location, receiving-water text | SMARTS Industrial Application Specific Data | Oct 20, 2026 |
| Permit history | SMARTS Storm Water Applications | Oct 20, 2026 |
| Monitoring results | SMARTS Industrial Parameter Data | Oct 20, 2026 |
| Watershed Boundary Dataset HU2 GeoPackages 15, 16, 18 (WBDHU12) | USGS | 2026-10-22 |
| 2026 California Integrated Report, Appendix A: 2026 303(d) List (final) | SWRCB | 2026-10-22 |
| Final_2026_Rivers_and_Streams + Final_2026_Lakes_and_Reservoirs (FeatureServer 0) | SWRCB GIS | 2026-10-22 |
| SMARTS TMDL requirements | SMARTS | 2026-10-21 |
Relationships computed 2026-10-22 with methods facility_huc12/1, proximity/1, receiving_water/2, tmdl_reference/1, waterbody_huc12_ovl/1, waterbody_huc12_pub/1; proximity threshold 1.0 km.
How to read the evidence labels
- Evidence: SMARTS record Evidence: facility-reported Information as published in SMARTS or reported by the discharger.
- Evidence: identification corroborated The reported receiving-water name identifies one official waterbody and the facility's location is consistent with it. It does not establish a discharge pathway.
- Evidence: candidate, awaiting review Evidence: not confirmed The reported name could match one or more official waterbodies, but no identification has been confirmed; nothing is assigned without review.
- Evidence: spatial Evidence: geographic proximity Derived from the reported location only.
- Evidence: SMARTS-reported Source records whose links to official references are not yet reviewed.
- Evidence: unavailable The information could not be loaded or is not in the sources.
Records are shown as published and are not compliance determinations. How geographic context is derived.