ALATUS AEROSYSTEMS
Terminated WDID 4 19I020049 Chatsworth, Los Angeles County Region 4 · Los Angeles
At a glance
- Permit Evidence: SMARTS record
- Terminated Industrial
- Notice of Intent (WDID code I) · Permits and applications
- Location Evidence: facility-reported
- Chatsworth, Los Angeles County
- Region 4 · Los Angeles · Location · Statewide map
- 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
- 90 distinct results, 5 reporting years (2015 to 2020)
- Most recent sample Mar 15, 2021 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 2 inspections · 2 violation records · 2 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
- 34.23988, -118.57979
- Precision
- 5 decimal places
- Shared point
- 2 permits report this exact point
- Matches application record
- same
Facility location as reported by the discharger in SMARTS; not a discharge point or outfall.
- Facility address
- 9301 Mason Ave, Chatsworth 91311
- Regional Water Board
- 4 — Los Angeles
HUC12 watershed Evidence: spatial
- Aliso Canyon Wash HUC12 180701050203
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
- Terminated
- Operator
- ALATUS AEROSYSTEMS
- Primary industry (SIC)
- 3728-Aircraft Parts and Auxiliary Equipment, NEC
- Application ID
- 296580
- NOI processed
- Feb 02, 2006
- Termination effective
- Jun 16, 2025
- Last certified
- Jan 03, 2024
- Facility size
- 5.9 Acres
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 296580 | Industrial | Terminated | Feb 02, 2006 | Jun 16, 2025 | Jan 03, 2024 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Limekiln Wash
- Discharges directly / indirectly
- N / Y (as answered in the permit application)
Evidence: not confirmed Not matchable to a single waterbody
Receiving-water text as reported by the discharger in SMARTS; no waterbody identification has been confirmed.
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
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 | Zinc, Total | .159 mg/L | NEL instantaneous | FINAL | 2020-07-01 | Y |
1 record. 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.
90 distinct measurements across 3 parameters, most recent sample Mar 15, 2021.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2020 | 18 | 3 | 0 | Dec 28, 2020 | Mar 15, 2021 |
| 2019 | 24 | 3 | 0 | Nov 27, 2019 | Apr 06, 2020 |
| 2018 | 6 | 3 | 0 | Nov 29, 2018 | Nov 29, 2018 |
| 2017 | 18 | 3 | 0 | Jan 08, 2018 | Mar 02, 2018 |
| 2015 | 24 | 3 | 0 | Jan 05, 2016 | Mar 07, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Oil and Grease | mg/L | 30 | 30 | Jan 05, 2016 | Mar 15, 2021 | Results |
| pH | SU | 30 | 0 | Jan 05, 2016 | Mar 15, 2021 | Results |
| Total Suspended Solids (TSS) | mg/L | 30 | 9 | Jan 05, 2016 | Mar 15, 2021 | Results |
All results (90 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Mar 15, 2021 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1153815 | |
| Mar 15, 2021 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1153815 | |
| Mar 15, 2021 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1153815 | |
| Mar 15, 2021 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1153815 | |
| Mar 15, 2021 | pH | 6.4 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1153815 | |
| Mar 15, 2021 | pH | 6.4 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1153815 | |
| Mar 15, 2021 | Total Suspended Solids (TSS) | 3 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1153815 | |
| Mar 15, 2021 | Total Suspended Solids (TSS) | 5 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1153815 | |
| Mar 15, 2021 | Total Suspended Solids (TSS) | 5 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1153815 | |
| Dec 28, 2020 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1153719 | |
| Dec 28, 2020 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1153719 | |
| Dec 28, 2020 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1153719 | |
| Dec 28, 2020 | pH | 6.2 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1153719 | |
| Dec 28, 2020 | pH | 6.4 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1153719 | |
| Dec 28, 2020 | pH | 6.4 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1153719 | |
| Dec 28, 2020 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 1153719 | |
| Dec 28, 2020 | Total Suspended Solids (TSS) | 3 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1153719 | |
| Dec 28, 2020 | Total Suspended Solids (TSS) | 13 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1153719 | |
| Apr 06, 2020 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1121636 | |
| Apr 06, 2020 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1121636 | |
| Apr 06, 2020 | pH | 6.5 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1121636 | |
| Apr 06, 2020 | pH | 5.8 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1121636 | |
| Apr 06, 2020 | Total Suspended Solids (TSS) | 8 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1121636 | |
| Apr 06, 2020 | Total Suspended Solids (TSS) | 3 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1121636 | |
| Mar 10, 2020 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1121616 | |
| Mar 10, 2020 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1121616 | |
| Mar 10, 2020 | pH | 6.5 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1121616 | |
| Mar 10, 2020 | pH | 6.5 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1121616 | |
| Mar 10, 2020 | Total Suspended Solids (TSS) | 26 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1121616 | |
| Mar 10, 2020 | Total Suspended Solids (TSS) | 32 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1121616 | |
| Dec 04, 2019 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1095646 | |
| Dec 04, 2019 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1095646 | |
| Dec 04, 2019 | pH | 6.4 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1095646 | |
| Dec 04, 2019 | pH | 6.4 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1095646 | |
| Dec 04, 2019 | Total Suspended Solids (TSS) | 36 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1095646 | |
| Dec 04, 2019 | Total Suspended Solids (TSS) | 2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1095646 | |
| Nov 27, 2019 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1095641 | |
| Nov 27, 2019 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1095641 | |
| Nov 27, 2019 | pH | 6.4 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1095641 | |
| Nov 27, 2019 | pH | 6.4 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1095641 | |
| Nov 27, 2019 | Total Suspended Solids (TSS) | 25 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1095641 | |
| Nov 27, 2019 | Total Suspended Solids (TSS) | 25 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1095641 | |
| Nov 29, 2018 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1075126 | |
| Nov 29, 2018 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1075126 | |
| Nov 29, 2018 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1075126 | |
| Nov 29, 2018 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1075126 | |
| Nov 29, 2018 | Total Suspended Solids (TSS) | 16 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1075126 | |
| Nov 29, 2018 | Total Suspended Solids (TSS) | 34 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1075126 | |
| Mar 02, 2018 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 991847 | |
| Mar 02, 2018 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 991847 |
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 | 2 | 2 Violation · 0 Potential (preliminary) · 0 Dismissed | Nov 25, 2008 – Dec 06, 2023 | Oct 21, 2026 | All violations |
| Enforcement actions | 2 | 2 issued · 0 draft · 0 withdrawn, rescinded or superseded | Dec 28, 2009 – Dec 06, 2023 | Oct 21, 2026 | All actions |
| Inspections | 2 | inspections, not findings | Oct 01, 2021 – Jul 14, 2025 | 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 | 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 (16 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jul 14, 2025 | Inspections | 2068439 | NOT | Finalized | No Further Action |
| Apr 23, 2025 | Annual reports | 1293268 | Annual report 2024 | — | |
| Jul 15, 2024 | Annual reports | 1242292 | Annual report 2023 | — | |
| Dec 06, 2023 | Enforcement actions | 451638 | NOV (Notice of Violation) | Historical | |
| Dec 06, 2023 | Violations | 886742 | Incomplete/Insufficient SWPPP | Violation | Report |
| Aug 10, 2023 | Annual reports | 1188247 | Annual report 2022 | — | |
| Aug 08, 2022 | Annual reports | 1111532 | Annual report 2021 | — | |
| Oct 01, 2021 | Inspections | 2055102 | B Type compliance | Finalized | No Further Action |
| Jul 14, 2021 | Annual reports | 1067493 | Annual report 2020 | — | |
| Jul 15, 2020 | Annual reports | 984677 | Annual report 2019 | — | |
| Aug 15, 2019 | Annual reports | 952188 | Annual report 2018 | — | |
| Jul 12, 2018 | Annual reports | 937601 | Annual report 2017 | — | |
| Jul 18, 2017 | Annual reports | 876772 | Annual report 2016 | — | |
| Jun 26, 2016 | Annual reports | 839596 | Annual report 2015 | — | |
| Dec 28, 2009 | Enforcement actions | 404741 | SEL (Staff Enforcement Letter) | Historical | |
| Nov 25, 2008 | Violations | 843999 | Deficient BMP Implementation | 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.