Youngs Iron Works
Active WDID 4 19I014213 Sun Valley, 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
- Sun Valley, Los Angeles County
- Region 4 · Los Angeles · Location · Statewide map
- Receiving water
- Pacific Ocean (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
- 266 distinct results, 9 reporting years (2015 to 2025)
- Most recent sample Nov 21, 2025 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 3 inspections · 7 violation records · 5 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
- 34.23487, -118.37451
- 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
- 9133 De Garmo Ave, Sun Valley 91352
- Regional Water Board
- 4 — Los Angeles
HUC12 watershed Evidence: spatial
- Tujunga Wash-Los Angeles River HUC12 180701050208
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
- Youngs Iron Works
- Primary industry (SIC)
- 3441-Fabricated Structural Metal
- Application ID
- 190666
- NOI processed
- Jun 18, 1998
- Last certified
- Jun 16, 2015
- Facility size
- 39200 SqFt
- Impervious area
- 100 %
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 190666 | Industrial | Active | Jun 18, 1998 | — | Jun 16, 2015 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Pacific Ocean
- Discharges directly / indirectly
- N / N (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
290 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.
266 distinct measurements across 16 parameters, most recent sample Nov 21, 2025.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2025 | 21 | 11 | 0 | Oct 14, 2025 | Nov 21, 2025 |
| 2023 | 44 | 11 | 0 | Dec 20, 2023 | Feb 06, 2024 |
| 2022 | 26 | 11 | 0 | Jan 10, 2023 | Mar 22, 2023 |
| 2020 | 9 | 9 | 0 | Mar 15, 2021 | Mar 15, 2021 |
| 2019 | 21 | 8 | 0 | Dec 04, 2019 | Mar 11, 2020 |
| 2018 | 48 | 8 | 0 | Nov 29, 2018 | Mar 06, 2019 |
| 2017 | 24 | 8 | 0 | Mar 02, 2018 | Mar 21, 2018 |
| 2016 | 49 | 9 | 0 | Dec 30, 2016 | Feb 17, 2017 |
| 2015 | 24 | 11 | 0 | Dec 22, 2015 | Jan 05, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Oil and Grease | mg/L | 31 | 23 | Dec 22, 2015 | Nov 21, 2025 | Results |
| Total Suspended Solids (TSS) | mg/L | 31 | 3 | Dec 22, 2015 | Nov 21, 2025 | Results |
| Nitrite Plus Nitrate (as N) | mg/L | 30 | 3 | Dec 22, 2015 | Nov 21, 2025 | Results |
| pH | SU | 27 | 0 | Dec 22, 2015 | Nov 21, 2025 | Results |
| Aluminum, Total Recoverable | mg/L | 17 | 0 | Jan 05, 2016 | Mar 06, 2019 | Results |
| Copper, Total Recoverable | mg/L | 17 | 0 | Jan 05, 2016 | Mar 06, 2019 | Results |
| Iron, Total Recoverable | mg/L | 17 | 0 | Jan 05, 2016 | Mar 06, 2019 | Results |
| Zinc, Total Recoverable | mg/L | 17 | 0 | Jan 05, 2016 | Mar 06, 2019 | Results |
| Aluminum, Total | mg/L | 14 | 0 | Dec 22, 2015 | Nov 21, 2025 | Results |
| Zinc, Total | mg/L | 14 | 0 | Dec 22, 2015 | Nov 21, 2025 | Results |
| Copper, Total | mg/L | 12 | 0 | Dec 27, 2019 | Nov 21, 2025 | Results |
| Nickel, Total | mg/L | 10 | 2 | Dec 27, 2019 | Nov 21, 2025 | Results |
Show 5 more parameters
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Iron, Total | mg/L | 9 | 1 | Dec 22, 2015 | Nov 21, 2025 | Results |
| Nitrate, Total (as N) | mg/L | 9 | 0 | Mar 15, 2021 | Nov 21, 2025 | Results |
| Nitrite, Total (as N) | mg/L | 9 | 0 | Mar 15, 2021 | Nov 21, 2025 | Results |
| Copper, Total Recoverable | ug/L | 1 | 0 | Dec 22, 2015 | Dec 22, 2015 | Results |
| Zinc, Dissolved | mg/L | 1 | 0 | Feb 03, 2017 | Feb 03, 2017 | Results |
All results (266 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Nov 21, 2025 | Aluminum, Total | .023 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1366196 | |
| Nov 21, 2025 | Copper, Total | .002 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1366196 | |
| Nov 21, 2025 | Iron, Total | ND | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1366196 | |
| Nov 21, 2025 | Nickel, Total | .0034 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1366196 | |
| Nov 21, 2025 | Nitrate, Total (as N) | .16 | mg/L | Effluent | Qualifying Storm Event | E353.2 | 1366196 | |
| Nov 21, 2025 | Nitrite Plus Nitrate (as N) | .16 | mg/L | Effluent | Qualifying Storm Event | E353.2 | 1366196 | |
| Nov 21, 2025 | Nitrite, Total (as N) | .05 | mg/L | Effluent | Qualifying Storm Event | E353.2 | 1366196 | |
| Nov 21, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1366196 | |
| Nov 21, 2025 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Field | 1366196 | |
| Nov 21, 2025 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 1366196 | |
| Nov 21, 2025 | Zinc, Total | .167 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1366196 | |
| Oct 14, 2025 | Aluminum, Total | .0781 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1355627 | |
| Oct 14, 2025 | Copper, Total | .0056 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1355627 | |
| Oct 14, 2025 | Iron, Total | .11 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1355627 | |
| Oct 14, 2025 | Nickel, Total | .0027 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1355627 | |
| Oct 14, 2025 | Nitrate, Total (as N) | .05 | mg/L | Effluent | Qualifying Storm Event | E353.2 | 1355627 | |
| Oct 14, 2025 | Nitrite Plus Nitrate (as N) | .79 | mg/L | Effluent | Qualifying Storm Event | E353.2 | 1355627 | |
| Oct 14, 2025 | Nitrite, Total (as N) | .79 | mg/L | Effluent | Qualifying Storm Event | E353.2 | 1355627 | |
| Oct 14, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1355627 | |
| Oct 14, 2025 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 1355627 | |
| Oct 14, 2025 | Zinc, Total | .138 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1355627 | |
| Feb 06, 2024 | Aluminum, Total | .0315 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1281859 | |
| Feb 06, 2024 | Copper, Total | .002 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1281859 | |
| Feb 06, 2024 | Iron, Total | .07 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1281859 | |
| Feb 06, 2024 | Nickel, Total | .0005 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1281859 | |
| Feb 06, 2024 | Nitrate, Total (as N) | .14 | mg/L | Effluent | Qualifying Storm Event | E353.2 | 1281859 | |
| Feb 06, 2024 | Nitrite Plus Nitrate (as N) | .14 | mg/L | Effluent | Qualifying Storm Event | E353.2 | 1281859 | |
| Feb 06, 2024 | Nitrite, Total (as N) | .05 | mg/L | Effluent | Qualifying Storm Event | E353.2 | 1281859 | |
| Feb 06, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1281859 | |
| Feb 06, 2024 | pH | 6.5 | SU | Effluent | Qualifying Storm Event | pH_Field | 1281859 | |
| Feb 06, 2024 | Total Suspended Solids (TSS) | 2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1281859 | |
| Feb 06, 2024 | Zinc, Total | .275 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1281859 | |
| Feb 01, 2024 | Aluminum, Total | .072 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1281854 | |
| Feb 01, 2024 | Copper, Total | .0039 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1281854 | |
| Feb 01, 2024 | Iron, Total | .1 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1281854 | |
| Feb 01, 2024 | Nickel, Total | .0009 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1281854 | |
| Feb 01, 2024 | Nitrate, Total (as N) | .21 | mg/L | Effluent | Qualifying Storm Event | E353.2 | 1281854 | |
| Feb 01, 2024 | Nitrite Plus Nitrate (as N) | .21 | mg/L | Effluent | Qualifying Storm Event | E353.2 | 1281854 | |
| Feb 01, 2024 | Nitrite, Total (as N) | .05 | mg/L | Effluent | Qualifying Storm Event | E353.2 | 1281854 | |
| Feb 01, 2024 | Oil and Grease | 3 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1281854 | |
| Feb 01, 2024 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Field | 1281854 | |
| Feb 01, 2024 | Total Suspended Solids (TSS) | 8 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1281854 | |
| Feb 01, 2024 | Zinc, Total | .275 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1281854 | |
| Jan 22, 2024 | Aluminum, Total | .121 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1281548 | |
| Jan 22, 2024 | Copper, Total | .004 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1281548 | |
| Jan 22, 2024 | Iron, Total | .14 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1281548 | |
| Jan 22, 2024 | Nickel, Total | .001 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1281548 | |
| Jan 22, 2024 | Nitrate, Total (as N) | .24 | mg/L | Effluent | Qualifying Storm Event | E353.2 | 1281548 | |
| Jan 22, 2024 | Nitrite Plus Nitrate (as N) | .24 | mg/L | Effluent | Qualifying Storm Event | E353.2 | 1281548 | |
| Jan 22, 2024 | Nitrite, Total (as N) | .05 | mg/L | Effluent | Qualifying Storm Event | E353.2 | 1281548 |
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 | 7 | 7 Violation · 0 Potential (preliminary) · 0 Dismissed | Jul 02, 1999 – Jan 07, 2026 | Oct 21, 2026 | All violations |
| Enforcement actions | 5 | 5 issued · 0 draft · 0 withdrawn, rescinded or superseded | Oct 26, 1999 – Jan 07, 2026 | Oct 21, 2026 | All actions |
| Inspections | 3 | inspections, not findings | Jan 28, 2002 – Nov 29, 2017 | Oct 21, 2026 | All inspections |
| Annual reports | 11 | certified reports (contents not shown) | 2015 – 2025 | Oct 21, 2026 | All reports |
| Water-quality-based corrective action reports | 2 | reports, by parameter | 2022-23 – 2023-24 | Oct 21, 2026 | All reports |
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 (28 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jun 24, 2026 | Annual reports | 1336399 | Annual report 2025 | — | |
| Jun 05, 2026 | Water-quality-based corrective action reports | 1374025 | WQBCAR 2023-24 | — | Zinc, Total |
| Jan 07, 2026 | Enforcement actions | 468301 | ACL (Administrative Civil Liability) | Historical | R4-2025-0279 |
| Jan 07, 2026 | Violations | 902760 | Effluent | Violation | Report |
| Jan 07, 2026 | Violations | 902761 | Late Report | Violation | Report |
| Jun 26, 2025 | Annual reports | 1295261 | Annual report 2024 | — | |
| Dec 02, 2024 | Water-quality-based corrective action reports | 1315532 | WQBCAR 2022-23 | — | Zinc, Total |
| Jul 11, 2024 | Annual reports | 1244394 | Annual report 2023 | — | |
| Jun 05, 2024 | Enforcement actions | 453401 | ACL (Administrative Civil Liability) | Historical | R4-2024-0216 |
| Jun 05, 2024 | Violations | 889080 | Effluent | Violation | Report |
| Jul 13, 2023 | Annual reports | 1190448 | Annual report 2022 | — | |
| Jun 30, 2022 | Annual reports | 1113931 | Annual report 2021 | — | |
| Jun 17, 2021 | Annual reports | 1069998 | Annual report 2020 | — | |
| Jun 22, 2020 | Annual reports | 987354 | Annual report 2019 | — | |
| Jul 02, 2019 | Annual reports | 954962 | Annual report 2018 | — | |
| Jul 05, 2018 | Annual reports | 940380 | Annual report 2017 | — | |
| Nov 29, 2017 | Inspections | 2035500 | B Type compliance | — | No Further Action |
| Jul 05, 2017 | Annual reports | 879705 | Annual report 2016 | — | |
| Jun 13, 2016 | Annual reports | 844068 | Annual report 2015 | — | |
| Jun 07, 2012 | Inspections | 2015831 | B Type compliance | — | Follow-up Inspection Needed |
| Apr 12, 2010 | Enforcement actions | 404773 | SEL (Staff Enforcement Letter) | Historical | |
| Feb 13, 2009 | Violations | 844033 | Deficient BMP Implementation | Violation | Report |
| Mar 18, 2003 | Enforcement actions | 245145 | NOV (Notice of Violation) | Historical | UNKNOWN |
| Mar 06, 2003 | Violations | 232329 | Deficient BMP Implementation | Violation | Inspection |
| Mar 06, 2003 | Violations | 232330 | Deficient BMP Implementation | Violation | Inspection |
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.