Valley Generating Station
Active WDID 4 19I004624 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
- Tujunga Wash (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
- 1 waterbody; 1 on the 2026 303(d) list
- Proximity only; not a discharge pathway · Nearby waterbodies
- Monitoring results Evidence: facility-reported
- 1,082 distinct results, 8 reporting years (2015 to 2023)
- Most recent sample Feb 01, 2024 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 1 inspection · 5 violation records · 4 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
- 34.24208, -118.38993
- 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
- 11801 Sheldon St, 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
- Los Angeles Department of Water and Power Power
- Primary industry (SIC)
- 4911-Electric Services
- Application ID
- 189404
- NOI processed
- Apr 08, 1992
- Last certified
- Sep 21, 2026
- Facility size
- 157 Acres
- Impervious area
- 1 %
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 189404 | Industrial | Active | Apr 08, 1992 | — | Sep 21, 2026 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Tujunga Wash
- 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
1 official waterbody shares 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.
| Waterbody (2026 Integrated Report) | Distance | 2026 303(d) list | Appendix A decisions |
|---|---|---|---|
| Tujunga Wash (LA River to Hansen Dam) CAR4052100019990202134750 | 706 m | listed | 4 |
Waterbodies within 1.0 km of the reported facility location. Method proximity/1.
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.
1,082 distinct measurements across 17 parameters, most recent sample Feb 01, 2024.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2023 | 136 | 17 | 0 | Aug 20, 2023 | Feb 01, 2024 |
| 2022 | 170 | 17 | 0 | Nov 08, 2022 | Mar 22, 2023 |
| 2021 | 102 | 17 | 0 | Oct 25, 2021 | Mar 28, 2022 |
| 2020 | 102 | 17 | 0 | Dec 28, 2020 | Mar 15, 2021 |
| 2018 | 128 | 16 | 0 | Nov 29, 2018 | Mar 06, 2019 |
| 2017 | 96 | 16 | 0 | Jan 08, 2018 | Mar 21, 2018 |
| 2016 | 242 | 16 | 0 | Nov 20, 2016 | Feb 17, 2017 |
| 2015 | 106 | 11 | 0 | Jul 18, 2015 | Mar 11, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Cadmium, Total | mg/L | 70 | 29 | Jul 18, 2015 | Feb 01, 2024 | Results |
| Chemical Oxygen Demand (COD) | mg/L | 70 | 1 | Jul 18, 2015 | Feb 01, 2024 | Results |
| Copper, Total | mg/L | 70 | 4 | Jul 18, 2015 | Feb 01, 2024 | Results |
| Iron, Total | mg/L | 70 | 0 | Jul 18, 2015 | Feb 01, 2024 | Results |
| Lead, Total | mg/L | 70 | 0 | Jul 18, 2015 | Feb 01, 2024 | Results |
| Oil and Grease | mg/L | 70 | 45 | Jul 18, 2015 | Feb 01, 2024 | Results |
| Selenium, Total | mg/L | 70 | 41 | Jul 18, 2015 | Feb 01, 2024 | Results |
| Total Suspended Solids (TSS) | mg/L | 70 | 0 | Jul 18, 2015 | Feb 01, 2024 | Results |
| Zinc, Total | mg/L | 70 | 0 | Jul 18, 2015 | Feb 01, 2024 | Results |
| Hardness, Total (as CaCO3) | mg/L | 66 | 1 | Jan 31, 2016 | Feb 01, 2024 | Results |
| pH | SU | 66 | 3 | Jul 18, 2015 | Feb 01, 2024 | Results |
| Ammonia, Total (as N) | mg/L | 60 | 14 | Nov 20, 2016 | Feb 01, 2024 | Results |
Show 5 more parameters
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Nitrate, Total (as N) | mg/L | 58 | 4 | Nov 20, 2016 | Feb 01, 2024 | Results |
| Nitrite Plus Nitrate (as N) | mg/L | 58 | 2 | Nov 20, 2016 | Feb 01, 2024 | Results |
| Nitrite, Total (as N) | mg/L | 58 | 32 | Nov 20, 2016 | Feb 01, 2024 | Results |
| E.coli | MPN/100 mL | 56 | 14 | Nov 20, 2016 | Feb 01, 2024 | Results |
| Hardness, Ca (as CaCO3) | mg/L | 30 | 0 | Dec 28, 2020 | Feb 01, 2024 | Results |
All results (1,082 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Feb 01, 2024 | Ammonia, Total (as N) | .25 | mg/L | Internal | Qualifying Storm Event | A4500NH | 1272557 | |
| Feb 01, 2024 | Ammonia, Total (as N) | .11 | mg/L | Internal | Qualifying Storm Event | A4500NH | 1272557 | |
| Feb 01, 2024 | Cadmium, Total | .00032 | mg/L | Internal | Qualifying Storm Event | EPA 200.7 | 1272557 | |
| Feb 01, 2024 | Cadmium, Total | .00025 | mg/L | Internal | Qualifying Storm Event | EPA 200.7 | 1272557 | |
| Feb 01, 2024 | Chemical Oxygen Demand (COD) | 27 | mg/L | Internal | Qualifying Storm Event | A5220D | 1272557 | |
| Feb 01, 2024 | Chemical Oxygen Demand (COD) | 20 | mg/L | Internal | Qualifying Storm Event | A5220D | 1272557 | |
| Feb 01, 2024 | Copper, Total | .025 | mg/L | Internal | Qualifying Storm Event | E200.8 | 1272557 | |
| Feb 01, 2024 | Copper, Total | .023 | mg/L | Internal | Qualifying Storm Event | E200.8 | 1272557 | |
| Feb 01, 2024 | E.coli | 7300 | MPN/100 mL | Internal | Qualifying Storm Event | A9221B | 1272557 | |
| Feb 01, 2024 | E.coli | 280 | MPN/100 mL | Internal | Qualifying Storm Event | A9221B | 1272557 | |
| Feb 01, 2024 | Hardness, Ca (as CaCO3) | 46.7 | mg/L | Internal | Qualifying Storm Event | 1272557 | ||
| Feb 01, 2024 | Hardness, Ca (as CaCO3) | 46.4 | mg/L | Internal | Qualifying Storm Event | 1272557 | ||
| Feb 01, 2024 | Hardness, Total (as CaCO3) | 46.7 | mg/L | Internal | Qualifying Storm Event | 1272557 | ||
| Feb 01, 2024 | Hardness, Total (as CaCO3) | 46.4 | mg/L | Internal | Qualifying Storm Event | 1272557 | ||
| Feb 01, 2024 | Iron, Total | 5.7 | mg/L | Internal | Qualifying Storm Event | E200.8 | 1272557 | |
| Feb 01, 2024 | Iron, Total | 5 | mg/L | Internal | Qualifying Storm Event | E200.8 | 1272557 | |
| Feb 01, 2024 | Lead, Total | .012 | mg/L | Internal | Qualifying Storm Event | E200.8 | 1272557 | |
| Feb 01, 2024 | Lead, Total | .015 | mg/L | Internal | Qualifying Storm Event | E200.8 | 1272557 | |
| Feb 01, 2024 | Nitrate, Total (as N) | 1.3 | mg/L | Internal | Qualifying Storm Event | E300.0 | 1272557 | |
| Feb 01, 2024 | Nitrate, Total (as N) | 1.7 | mg/L | Internal | Qualifying Storm Event | E300.0 | 1272557 | |
| Feb 01, 2024 | Nitrite Plus Nitrate (as N) | 1.3 | mg/L | Internal | Qualifying Storm Event | E300.0 | 1272557 | |
| Feb 01, 2024 | Nitrite Plus Nitrate (as N) | 1.7 | mg/L | Internal | Qualifying Storm Event | E300.0 | 1272557 | |
| Feb 01, 2024 | Nitrite, Total (as N) | ND | mg/L | Internal | Qualifying Storm Event | E300.0 | 1272557 | |
| Feb 01, 2024 | Nitrite, Total (as N) | ND | mg/L | Internal | Qualifying Storm Event | E300.0 | 1272557 | |
| Feb 01, 2024 | Oil and Grease | 1.1 | mg/L | Internal | Qualifying Storm Event | E1664A | 1272557 | |
| Feb 01, 2024 | Oil and Grease | 13 | mg/L | Internal | Qualifying Storm Event | E1664A | 1272557 | |
| Feb 01, 2024 | pH | DNQ 0 | SU | Internal | Qualifying Storm Event | pH_Field | 1272557 | |
| Feb 01, 2024 | pH | DNQ 0 | SU | Internal | Qualifying Storm Event | pH_Field | 1272557 | |
| Feb 01, 2024 | Selenium, Total | .00014 | mg/L | Internal | Qualifying Storm Event | E200.8 | 1272557 | |
| Feb 01, 2024 | Selenium, Total | .00024 | mg/L | Internal | Qualifying Storm Event | E200.8 | 1272557 | |
| Feb 01, 2024 | Total Suspended Solids (TSS) | 82 | mg/L | Internal | Qualifying Storm Event | A2540D | 1272557 | |
| Feb 01, 2024 | Total Suspended Solids (TSS) | 110 | mg/L | Internal | Qualifying Storm Event | A2540D | 1272557 | |
| Feb 01, 2024 | Zinc, Total | .11 | mg/L | Internal | Qualifying Storm Event | E200.8 | 1272557 | |
| Feb 01, 2024 | Zinc, Total | .16 | mg/L | Internal | Qualifying Storm Event | E200.8 | 1272557 | |
| Jan 22, 2024 | Ammonia, Total (as N) | .22 | mg/L | Internal | Qualifying Storm Event | A4500NH | 1272557 | |
| Jan 22, 2024 | Ammonia, Total (as N) | .19 | mg/L | Internal | Qualifying Storm Event | A4500NH | 1272557 | |
| Jan 22, 2024 | Cadmium, Total | .00067 | mg/L | Internal | Qualifying Storm Event | EPA 200.7 | 1272557 | |
| Jan 22, 2024 | Cadmium, Total | .00066 | mg/L | Internal | Qualifying Storm Event | EPA 200.7 | 1272557 | |
| Jan 22, 2024 | Chemical Oxygen Demand (COD) | 31 | mg/L | Internal | Qualifying Storm Event | A5220D | 1272557 | |
| Jan 22, 2024 | Chemical Oxygen Demand (COD) | 25 | mg/L | Internal | Qualifying Storm Event | A5220D | 1272557 | |
| Jan 22, 2024 | Copper, Total | .046 | mg/L | Internal | Qualifying Storm Event | E200.8 | 1272557 | |
| Jan 22, 2024 | Copper, Total | .048 | mg/L | Internal | Qualifying Storm Event | E200.8 | 1272557 | |
| Jan 22, 2024 | E.coli | 17000 | MPN/100 mL | Internal | Qualifying Storm Event | A9221B | 1272557 | |
| Jan 22, 2024 | E.coli | 430 | MPN/100 mL | Internal | Qualifying Storm Event | A9221B | 1272557 | |
| Jan 22, 2024 | Hardness, Ca (as CaCO3) | 80.4 | mg/L | Internal | Qualifying Storm Event | 1272557 | ||
| Jan 22, 2024 | Hardness, Ca (as CaCO3) | 47.9 | mg/L | Internal | Qualifying Storm Event | 1272557 | ||
| Jan 22, 2024 | Hardness, Total (as CaCO3) | 80.4 | mg/L | Internal | Qualifying Storm Event | 1272557 | ||
| Jan 22, 2024 | Hardness, Total (as CaCO3) | 47.9 | mg/L | Internal | Qualifying Storm Event | 1272557 | ||
| Jan 22, 2024 | Iron, Total | 12 | mg/L | Internal | Qualifying Storm Event | E200.8 | 1272557 | |
| Jan 22, 2024 | Iron, Total | 9.1 | mg/L | Internal | Qualifying Storm Event | E200.8 | 1272557 |
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 | 5 | 5 Violation · 0 Potential (preliminary) · 0 Dismissed | Apr 09, 1999 – Nov 20, 2020 | Oct 21, 2026 | All violations |
| Enforcement actions | 4 | 4 issued · 0 draft · 0 withdrawn, rescinded or superseded | Sep 04, 2002 – Nov 20, 2020 | Oct 21, 2026 | All actions |
| Inspections | 1 | inspections, not findings | Aug 14, 2002 – Aug 14, 2002 | 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 | 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 (21 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jul 15, 2026 | Annual reports | 1333969 | Annual report 2025 | — | |
| Jul 15, 2025 | Annual reports | 1292733 | Annual report 2024 | — | |
| Jul 15, 2024 | Annual reports | 1241725 | Annual report 2023 | — | |
| Jul 17, 2023 | Annual reports | 1187644 | Annual report 2022 | — | |
| Jul 15, 2022 | Annual reports | 1110889 | Annual report 2021 | — | |
| Jul 15, 2021 | Annual reports | 1066812 | Annual report 2020 | — | |
| Nov 20, 2020 | Enforcement actions | 439121 | NOV (Notice of Violation) | Historical | |
| Nov 20, 2020 | Violations | 875320 | Incomplete/Insufficient SWPPP | Violation | Report |
| Jul 15, 2020 | Annual reports | 983953 | Annual report 2019 | — | |
| Jul 15, 2019 | Annual reports | 951445 | Annual report 2018 | — | |
| Jul 16, 2018 | Annual reports | 936851 | Annual report 2017 | — | |
| Jul 17, 2017 | Annual reports | 875986 | Annual report 2016 | — | |
| Jul 14, 2016 | Annual reports | 844970 | Annual report 2015 | — | |
| May 04, 2010 | Enforcement actions | 404624 | SEL (Staff Enforcement Letter) | Historical | |
| Nov 25, 2008 | Violations | 843894 | Deficient BMP Implementation | Violation | Report |
| Dec 20, 2002 | Enforcement actions | 245903 | NOV (Notice of Violation) | Historical | UNKNOWN |
| Sep 04, 2002 | Enforcement actions | 246943 | NOV (Notice of Violation) | Historical | UNKNOWN |
| Aug 14, 2002 | Inspections | 1733750 | B Type compliance | — | Additional Info Required |
| Aug 14, 2002 | Violations | 215571 | Deficient BMP Implementation | Violation | Inspection |
| Aug 14, 2002 | Violations | 215572 | Deficient BMP Implementation | Violation | Inspection |
| Apr 09, 1999 | Violations | 205063 | Failure to Pay Enforcement Fee | 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.