Hughes Bros Aircrafters
Active WDID 4 19I012943 South Gate, 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
- South Gate, 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
- 2 waterbodies; 2 on the 2026 303(d) list
- Proximity only; not a discharge pathway · Nearby waterbodies
- Monitoring results Evidence: facility-reported
- 397 distinct results, 6 reporting years (2018 to 2023)
- Most recent sample Feb 01, 2024 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 1 inspection · 5 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
- 33.92829, -118.16963
- 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
- 11010 Garfield Pl, South Gate 90280
- Regional Water Board
- 4 — Los Angeles
HUC12 watershed Evidence: spatial
- Compton Creek-Los Angeles River HUC12 180701050402
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
- Hughes Brothers Aircraft Inc
- Primary industry (SIC)
- 3728-Aircraft Parts and Auxiliary Equipment, NEC
- Secondary SIC
- 3369-Nonferrous Foundries, Except Aluminum and Copper
- Tertiary SIC
- 3398-Metal Heat Treating
- Application ID
- 190456
- NOI processed
- Mar 05, 1997
- Last certified
- Sep 22, 2015
- Facility size
- 1.17 Acres
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 190456 | Industrial | Active | Mar 05, 1997 | — | Sep 22, 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 / 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
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.
| Waterbody (2026 Integrated Report) | Distance | 2026 303(d) list | Appendix A decisions |
|---|---|---|---|
| Los Angeles River Reach 2 (Carson to Figueroa Street) CAR4051501019990202085021 | 619 m | listed | 9 |
| Rio Hondo Reach 1 (Confl. LA River to Snt Ana Fwy) CAR4051501019990202112624 | 667 m | listed | 8 |
Waterbodies within 1.0 km of the reported facility location. Method proximity/1.
SMARTS TMDL records Evidence: SMARTS-reported
SMARTS TMDL record as reported for this facility; it is not a determination that the TMDL applies to the facility.
| TMDL | Waterbody (as reported) | Parameter | Limit | Type | Period | Due | Discharges to TMDL water |
|---|---|---|---|---|---|---|---|
| Los Angeles River Metals TMDL | Los Angeles River and Los Angeles River Tributaries | Copper, Total | .06749 mg/L | NEL instantaneous | FINAL | 2020-07-01 | Y |
| Los Angeles River Metals TMDL | Los Angeles River and Los Angeles River Tributaries | Lead, Total | .094 mg/L | NEL instantaneous | FINAL | 2020-07-01 | Y |
| Los Angeles River Metals TMDL | Los Angeles River and Los Angeles River Tributaries | Zinc, Total | .159 mg/L | NEL instantaneous | FINAL | 2020-07-01 | Y |
| Los Angeles River Nitrogen TMDL | Los Angeles River Watershed | Nitrite Plus Nitrate (as N) | 8 mg/L | NEL instantaneous | FINAL | 2020-07-01 | Y |
4 records. Links between these records and specific TMDL projects or listed waterbodies have not been reviewed and are not shown.
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.
397 distinct measurements across 9 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 | 36 | 9 | 0 | Aug 21, 2023 | Feb 01, 2024 |
| 2022 | 64 | 8 | 0 | Nov 08, 2022 | Dec 12, 2022 |
| 2021 | 108 | 9 | 0 | Dec 14, 2021 | Mar 28, 2022 |
| 2020 | 27 | 9 | 0 | Mar 15, 2021 | Mar 15, 2021 |
| 2019 | 75 | 9 | 0 | Dec 05, 2019 | Apr 06, 2020 |
| 2018 | 87 | 9 | 0 | Nov 28, 2018 | Feb 06, 2019 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Lead, Total | mg/L | 48 | 2 | Nov 28, 2018 | Feb 01, 2024 | Results |
| Oil and Grease | mg/L | 48 | 29 | Nov 28, 2018 | Feb 01, 2024 | Results |
| Total Suspended Solids (TSS) | mg/L | 48 | 6 | Nov 28, 2018 | Feb 01, 2024 | Results |
| Zinc, Total | mg/L | 48 | 1 | Nov 28, 2018 | Feb 01, 2024 | Results |
| Aluminum, Total | mg/L | 42 | 1 | Feb 01, 2019 | Feb 01, 2024 | Results |
| Iron, Total | mg/L | 42 | 4 | Feb 01, 2019 | Feb 01, 2024 | Results |
| Nitrite Plus Nitrate (as N) | mg/L | 42 | 3 | Feb 01, 2019 | Feb 01, 2024 | Results |
| pH | SU | 40 | 0 | Nov 28, 2018 | Feb 01, 2024 | Results |
| Copper, Total | mg/L | 39 | 3 | Nov 28, 2018 | Feb 01, 2024 | Results |
All results (397 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Feb 01, 2024 | Aluminum, Total | .0546 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1285190 | |
| Feb 01, 2024 | Copper, Total | ND | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1285190 | |
| Feb 01, 2024 | Iron, Total | ND | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1285190 | |
| Feb 01, 2024 | Lead, Total | .00213 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1285190 | |
| Feb 01, 2024 | Nitrite Plus Nitrate (as N) | ND | mg/L | Effluent | Qualifying Storm Event | E353.2 | 1285190 | |
| Feb 01, 2024 | Oil and Grease | DNQ 2.2 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1285190 | |
| Feb 01, 2024 | pH | 6.9 | SU | Effluent | Qualifying Storm Event | pH_Field | 1285190 | |
| Feb 01, 2024 | Total Suspended Solids (TSS) | DNQ 1.2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1285190 | |
| Feb 01, 2024 | Zinc, Total | .0163 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1285190 | |
| Jan 22, 2024 | Aluminum, Total | .041 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1277063 | |
| Jan 22, 2024 | Copper, Total | DNQ .000672 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1277063 | |
| Jan 22, 2024 | Iron, Total | DNQ .0218 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1277063 | |
| Jan 22, 2024 | Lead, Total | .00318 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1277063 | |
| Jan 22, 2024 | Nitrite Plus Nitrate (as N) | .29 | mg/L | Effluent | Qualifying Storm Event | E353.2 | 1277063 | |
| Jan 22, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1277063 | |
| Jan 22, 2024 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Field | 1277063 | |
| Jan 22, 2024 | Total Suspended Solids (TSS) | DNQ .6 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1277063 | |
| Jan 22, 2024 | Zinc, Total | .0116 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1277063 | |
| Dec 21, 2023 | Aluminum, Total | .0368 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1277044 | |
| Dec 21, 2023 | Copper, Total | DNQ .000612 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1277044 | |
| Dec 21, 2023 | Iron, Total | ND .02 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1277044 | |
| Dec 21, 2023 | Lead, Total | DNQ .000581 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1277044 | |
| Dec 21, 2023 | Nitrite Plus Nitrate (as N) | DNQ .162 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1277044 | |
| Dec 21, 2023 | Oil and Grease | DNQ 2.1 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1277044 | |
| Dec 21, 2023 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Field | 1277044 | |
| Dec 21, 2023 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 1277044 | |
| Dec 21, 2023 | Zinc, Total | DNQ .00892 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1277044 | |
| Aug 21, 2023 | Aluminum, Total | .024 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1267010 | |
| Aug 21, 2023 | Copper, Total | .0016 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1267010 | |
| Aug 21, 2023 | Iron, Total | ND | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1267010 | |
| Aug 21, 2023 | Lead, Total | .002 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1267010 | |
| Aug 21, 2023 | Nitrite Plus Nitrate (as N) | DNQ .049 | mg/L | Effluent | Qualifying Storm Event | E353.2 | 1267010 | |
| Aug 21, 2023 | Oil and Grease | DNQ 2.1 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1267010 | |
| Aug 21, 2023 | pH | 6.9 | SU | Effluent | Qualifying Storm Event | pH_Field | 1267010 | |
| Aug 21, 2023 | Total Suspended Solids (TSS) | 1.73 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1267010 | |
| Aug 21, 2023 | Zinc, Total | .013 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1267010 | |
| Dec 12, 2022 | Aluminum, Total | .213 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1222231 | |
| Dec 12, 2022 | Aluminum, Total | .223 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1222231 | |
| Dec 12, 2022 | Aluminum, Total | .246 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1222231 | |
| Dec 12, 2022 | Aluminum, Total | .155 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1222231 | |
| Dec 12, 2022 | Copper, Total | .0149 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1222231 | |
| Dec 12, 2022 | Copper, Total | .0152 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1222231 | |
| Dec 12, 2022 | Copper, Total | .0146 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1222231 | |
| Dec 12, 2022 | Copper, Total | .00623 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1222231 | |
| Dec 12, 2022 | Iron, Total | .257 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1222231 | |
| Dec 12, 2022 | Iron, Total | .286 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1222231 | |
| Dec 12, 2022 | Iron, Total | .277 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1222231 | |
| Dec 12, 2022 | Iron, Total | .174 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1222231 | |
| Dec 12, 2022 | Lead, Total | .114 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1222231 | |
| Dec 12, 2022 | Lead, Total | .114 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1222231 |
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 | 4 Violation · 1 Potential (preliminary) · 0 Dismissed | Jul 02, 1999 – Jul 16, 2026 | Oct 21, 2026 | All violations |
| Enforcement actions | 5 | 5 issued · 0 draft · 0 withdrawn, rescinded or superseded | May 04, 2010 – Jul 22, 2026 | Oct 21, 2026 | All actions |
| Inspections | 1 | inspections, not findings | Sep 13, 2021 – Sep 13, 2021 | Oct 21, 2026 | All inspections |
| Annual reports | 10 | certified reports (contents not shown) | 2015 – 2024 | Oct 21, 2026 | All reports |
| Water-quality-based corrective action reports | 1 | reports, by parameter | 2021-22 – 2021-22 | 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 (22 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jul 22, 2026 | Enforcement actions | 470398 | NOV (Notice of Violation) | Historical | |
| Jul 16, 2026 | Violations | 904476 | Late Report | Violation | Report |
| Jul 11, 2025 | Annual reports | 1292918 | Annual report 2024 | — | |
| Aug 29, 2024 | Water-quality-based corrective action reports | 1302423 | WQBCAR 2021-22 | — | Lead, Total, Zinc, Total |
| Jul 11, 2024 | Annual reports | 1241919 | Annual report 2023 | — | |
| Jul 12, 2023 | Annual reports | 1187848 | Annual report 2022 | — | |
| Jul 12, 2022 | Annual reports | 1111108 | Annual report 2021 | — | |
| Sep 13, 2021 | Inspections | 2053977 | B Type compliance | Finalized | No Further Action |
| Jul 15, 2021 | Annual reports | 1067041 | Annual report 2020 | — | |
| Feb 18, 2021 | Enforcement actions | 440047 | TSO (Time Schedule Order) | Historical | R4-2021-0001 |
| Feb 18, 2021 | Violations | 876319 | Effluent | Potential | Report |
| Jul 06, 2020 | Annual reports | 984191 | Annual report 2019 | — | |
| Jul 03, 2019 | Annual reports | 951690 | Annual report 2018 | — | |
| Jul 13, 2018 | Annual reports | 937100 | Annual report 2017 | — | |
| Jul 19, 2017 | Annual reports | 876249 | Annual report 2016 | — | |
| May 08, 2017 | Enforcement actions | 426131 | NOV (Notice of Violation) | Historical | |
| Aug 08, 2016 | Annual reports | 846773 | Annual report 2015 | — | |
| Aug 08, 2016 | Violations | 863335 | Incomplete/Insufficient SWPPP | Violation | Report |
| Mar 10, 2011 | Enforcement actions | 404555 | NOV (Notice of Violation) | Historical | |
| May 04, 2010 | Enforcement actions | 405089 | SEL (Staff Enforcement Letter) | Active | |
| Dec 22, 2008 | Violations | 844340 | Deficient BMP Implementation | Violation | Report |
| Jul 02, 1999 | Violations | 156731 | 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.