Darling Ingredients Inc
Active WDID 4 19I005929 Los Angeles, 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
- Los Angeles, 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
- 1 waterbody; 1 on the 2026 303(d) list
- Proximity only; not a discharge pathway · Nearby waterbodies
- Monitoring results Evidence: facility-reported
- 123 distinct results, 5 reporting years (2015 to 2024)
- Most recent sample Jan 26, 2025 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 2 inspections · 7 violation records · 3 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
- 34.01488, -118.22482
- 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
- 2626 E 25th St, Los Angeles 90058
- 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
- Darling Ingredients Inc
- Primary industry (SIC)
- 2077-Animal and Marine Fats and Oils
- Application ID
- 189546
- NOI processed
- Apr 17, 1992
- Last certified
- Nov 04, 2024
- Facility size
- 6.4 Acres
- Impervious area
- 99 %
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 189546 | Industrial | Active | Apr 17, 1992 | — | Nov 04, 2024 |
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.
| Waterbody (2026 Integrated Report) | Distance | 2026 303(d) list | Appendix A decisions |
|---|---|---|---|
| Los Angeles River Reach 2 (Carson to Figueroa Street) CAR4051501019990202085021 | 182 m | listed | 9 |
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.
123 distinct measurements across 6 parameters, most recent sample Jan 26, 2025.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2024 | 12 | 6 | 0 | Jan 26, 2025 | Jan 26, 2025 |
| 2018 | 12 | 6 | 0 | Mar 06, 2019 | May 16, 2019 |
| 2017 | 23 | 6 | 0 | Jan 08, 2018 | Mar 22, 2018 |
| 2016 | 60 | 6 | 0 | Dec 15, 2016 | Feb 06, 2017 |
| 2015 | 16 | 4 | 0 | Sep 15, 2015 | Jan 05, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Nitrite Plus Nitrate (as N) | mg/L | 22 | 12 | Sep 15, 2015 | Jan 26, 2025 | Results |
| Oil and Grease | mg/L | 22 | 15 | Sep 15, 2015 | Jan 26, 2025 | Results |
| Total Suspended Solids (TSS) | mg/L | 22 | 0 | Sep 15, 2015 | Jan 26, 2025 | Results |
| pH | SU | 21 | 0 | Sep 15, 2015 | Jan 26, 2025 | Results |
| Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) | mg/L | 18 | 0 | Dec 15, 2016 | Jan 26, 2025 | Results |
| Chemical Oxygen Demand (COD) | mg/L | 18 | 0 | Dec 15, 2016 | Jan 26, 2025 | Results |
All results (123 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Jan 26, 2025 | Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) | 421 | mg/L | Internal | Qualifying Storm Event | A5210B | 1332509 | |
| Jan 26, 2025 | Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) | 106 | mg/L | Effluent | Qualifying Storm Event | A5210B | 1332509 | |
| Jan 26, 2025 | Chemical Oxygen Demand (COD) | 289 | mg/L | Internal | Qualifying Storm Event | E410.4 | 1332509 | |
| Jan 26, 2025 | Chemical Oxygen Demand (COD) | 1130 | mg/L | Effluent | Qualifying Storm Event | E410.4 | 1332509 | |
| Jan 26, 2025 | Nitrite Plus Nitrate (as N) | .0000092 | mg/L | Internal | Qualifying Storm Event | E353.2 | 1332509 | |
| Jan 26, 2025 | Nitrite Plus Nitrate (as N) | .00031 | mg/L | Effluent | Qualifying Storm Event | E353.2 | 1332509 | |
| Jan 26, 2025 | Oil and Grease | 9.6 | mg/L | Internal | Qualifying Storm Event | E1664A | 1332509 | |
| Jan 26, 2025 | Oil and Grease | 32.4 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1332509 | |
| Jan 26, 2025 | pH | 8.25 | SU | Internal | Qualifying Storm Event | pH_Field | 1332509 | |
| Jan 26, 2025 | pH | 8.25 | SU | Effluent | Qualifying Storm Event | pH_Field | 1332509 | |
| Jan 26, 2025 | Total Suspended Solids (TSS) | 306 | mg/L | Internal | Qualifying Storm Event | A2540D | 1332509 | |
| Jan 26, 2025 | Total Suspended Solids (TSS) | 118 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1332509 | |
| May 16, 2019 | Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) | 119 | mg/L | Effluent | Qualifying Storm Event | A5210B | 1061532 | |
| May 16, 2019 | Chemical Oxygen Demand (COD) | 692 | mg/L | Effluent | Qualifying Storm Event | A5220D | 1061532 | |
| May 16, 2019 | Nitrite Plus Nitrate (as N) | ND | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1061532 | |
| May 16, 2019 | Oil and Grease | 23 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1061532 | |
| May 16, 2019 | pH | 8.9 | SU | Effluent | Qualifying Storm Event | pH_Field | 1061532 | |
| May 16, 2019 | Total Suspended Solids (TSS) | 118 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1061532 | |
| Mar 06, 2019 | Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) | 13 | mg/L | Effluent | Qualifying Storm Event | A5210B | 1054286 | |
| Mar 06, 2019 | Chemical Oxygen Demand (COD) | 167 | mg/L | Effluent | Qualifying Storm Event | A5220D | 1054286 | |
| Mar 06, 2019 | Nitrite Plus Nitrate (as N) | .504 | mg/L | Effluent | Qualifying Storm Event | A4500NE | 1054286 | |
| Mar 06, 2019 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | A5220B | 1054286 | |
| Mar 06, 2019 | pH | 8.4 | SU | Effluent | Qualifying Storm Event | pH_Field | 1054286 | |
| Mar 06, 2019 | Total Suspended Solids (TSS) | 84 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1054286 | |
| Mar 22, 2018 | Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) | 43 | mg/L | Effluent | Qualifying Storm Event | A5210B | 999477 | |
| Mar 22, 2018 | Chemical Oxygen Demand (COD) | 130 | mg/L | Effluent | Qualifying Storm Event | E410.4 | 999477 | |
| Mar 22, 2018 | Nitrite Plus Nitrate (as N) | .29 | mg/L | Effluent | Qualifying Storm Event | A4500NOH | 999477 | |
| Mar 22, 2018 | Oil and Grease | 20 | mg/L | Effluent | Qualifying Storm Event | E1664A | 999477 | |
| Mar 22, 2018 | pH | 8.21 | SU | Effluent | Qualifying Storm Event | pH_Field | 999477 | |
| Mar 22, 2018 | Total Suspended Solids (TSS) | 9.8 | mg/L | Effluent | Qualifying Storm Event | A2540D | 999477 | |
| Mar 15, 2018 | Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) | 15 | mg/L | Effluent | Qualifying Storm Event | A5210B | 999488 | |
| Mar 15, 2018 | Chemical Oxygen Demand (COD) | 110 | mg/L | Effluent | Qualifying Storm Event | E410.4 | 999488 | |
| Mar 15, 2018 | Nitrite Plus Nitrate (as N) | 3.3 | mg/L | Effluent | Qualifying Storm Event | A4500NOH | 999488 | |
| Mar 15, 2018 | Oil and Grease | 14 | mg/L | Effluent | Qualifying Storm Event | E1664A | 999488 | |
| Mar 15, 2018 | pH | 7.62 | SU | Effluent | Qualifying Storm Event | pH_Field | 999488 | |
| Mar 15, 2018 | Total Suspended Solids (TSS) | 53 | mg/L | Effluent | Qualifying Storm Event | A2540D | 999488 | |
| Mar 02, 2018 | Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) | 42 | mg/L | Effluent | Qualifying Storm Event | A5210B | 997843 | |
| Mar 02, 2018 | Chemical Oxygen Demand (COD) | 130 | mg/L | Effluent | Qualifying Storm Event | E410.4 | 997843 | |
| Mar 02, 2018 | Nitrite Plus Nitrate (as N) | 1.3 | mg/L | Effluent | Qualifying Storm Event | A4500NOH | 997843 | |
| Mar 02, 2018 | Oil and Grease | 10 | mg/L | Effluent | Qualifying Storm Event | E1664A | 997843 | |
| Mar 02, 2018 | pH | 9.05 | SU | Effluent | Qualifying Storm Event | pH_Field | 997843 | |
| Mar 02, 2018 | Total Suspended Solids (TSS) | 27 | mg/L | Effluent | Qualifying Storm Event | A2540D | 997843 | |
| Jan 08, 2018 | Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) | 44 | mg/L | Effluent | Qualifying Storm Event | A5210B | 977102 | |
| Jan 08, 2018 | Chemical Oxygen Demand (COD) | 354 | mg/L | Effluent | Qualifying Storm Event | A5220D | 977102 | |
| Jan 08, 2018 | Nitrite Plus Nitrate (as N) | .401 | mg/L | Effluent | Qualifying Storm Event | A4500NE | 977102 | |
| Jan 08, 2018 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | A5220B | 977102 | |
| Jan 08, 2018 | Total Suspended Solids (TSS) | 65 | mg/L | Effluent | Qualifying Storm Event | A2540D | 977102 | |
| Feb 06, 2017 | Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) | 21 | mg/L | Effluent | Qualifying Storm Event | A5210B | 929430 | |
| Feb 06, 2017 | Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) | 82 | mg/L | Effluent | Qualifying Storm Event | A5210B | 929430 | |
| Feb 06, 2017 | Chemical Oxygen Demand (COD) | 36 | mg/L | Effluent | Qualifying Storm Event | A5220B | 929430 |
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 | 6 Violation · 1 Potential (preliminary) · 0 Dismissed | Jul 02, 1999 – Jul 25, 2024 | Oct 21, 2026 | All violations |
| Enforcement actions | 3 | 3 issued · 0 draft · 0 withdrawn, rescinded or superseded | Jan 05, 2004 – Jul 25, 2024 | Oct 21, 2026 | All actions |
| Inspections | 2 | inspections, not findings | Feb 11, 2003 – Dec 15, 2003 | 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 (23 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jul 13, 2026 | Annual reports | 1336392 | Annual report 2025 | — | |
| Jul 10, 2025 | Annual reports | 1295254 | Annual report 2024 | — | |
| Jul 25, 2024 | Enforcement actions | 453686 | NOV (Notice of Violation) | Historical | |
| Jul 25, 2024 | Violations | 889381 | Failure to Notify | Potential | Report |
| Jul 09, 2024 | Annual reports | 1244387 | Annual report 2023 | — | |
| Jul 06, 2023 | Annual reports | 1190441 | Annual report 2022 | — | |
| Jul 15, 2022 | Annual reports | 1113923 | Annual report 2021 | — | |
| Jul 13, 2021 | Annual reports | 1069990 | Annual report 2020 | — | |
| Jul 13, 2020 | Annual reports | 987346 | Annual report 2019 | — | |
| Jul 09, 2019 | Annual reports | 954953 | Annual report 2018 | — | |
| Jul 03, 2018 | Annual reports | 940371 | Annual report 2017 | — | |
| Jul 11, 2017 | Annual reports | 879696 | Annual report 2016 | — | |
| Jul 15, 2016 | Annual reports | 840693 | Annual report 2015 | — | |
| Feb 09, 2010 | Enforcement actions | 404521 | SEL (Staff Enforcement Letter) | Historical | |
| Nov 26, 2008 | Violations | 843803 | Deficient BMP Implementation | Violation | Report |
| Jan 05, 2004 | Enforcement actions | 250491 | NOV (Notice of Violation) | Historical | UNKNOWN |
| Dec 15, 2003 | Inspections | 1733134 | B Type compliance | — | |
| Dec 15, 2003 | Violations | 244612 | Deficient BMP Implementation | Violation | Inspection |
| Dec 15, 2003 | Violations | 244613 | Deficient BMP Implementation | Violation | Inspection |
| Dec 15, 2003 | Violations | 244614 | Deficient BMP Implementation | Violation | Inspection |
| Dec 15, 2003 | Violations | 244657 | Deficient BMP Implementation | Violation | Inspection |
| Feb 11, 2003 | Inspections | 1733135 | B Type compliance | — | |
| Jul 02, 1999 | Violations | 154762 | Deficient Report | 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.