Aerocraft Heat Treating Co In
Active WDID 4 19I000098 Paramount, 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
- Paramount, 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
- 381 distinct results, 11 reporting years (2015 to 2025)
- Most recent sample Feb 19, 2026 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 3 inspections · 7 violation records · 6 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
- 33.89011, -118.16672
- 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
- 15701 Minnesota Ave, Paramount 90723
- 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
- Aerocraft Heat Treating Co Inc
- Primary industry (SIC)
- 3398-Metal Heat Treating
- Application ID
- 188546
- NOI processed
- Feb 18, 1992
- Last certified
- Jul 03, 2024
- Facility size
- 3 Acres
- Impervious area
- 90 %
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 188546 | Industrial | Active | Feb 18, 1992 | — | Jul 03, 2024 |
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.
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 | 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 |
2 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.
381 distinct measurements across 7 parameters, most recent sample Feb 19, 2026.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2025 | 23 | 6 | 0 | Oct 14, 2025 | Feb 19, 2026 |
| 2024 | 17 | 6 | 0 | Feb 13, 2025 | Mar 05, 2025 |
| 2023 | 36 | 6 | 0 | Nov 15, 2023 | Feb 05, 2024 |
| 2022 | 48 | 6 | 0 | Nov 08, 2022 | Jan 10, 2023 |
| 2021 | 24 | 4 | 0 | Oct 25, 2021 | Mar 28, 2022 |
| 2020 | 16 | 4 | 0 | Jan 29, 2021 | Mar 03, 2021 |
| 2019 | 28 | 4 | 0 | Nov 27, 2019 | Mar 12, 2020 |
| 2018 | 72 | 4 | 0 | Nov 22, 2018 | May 16, 2019 |
| 2017 | 48 | 4 | 0 | Jan 08, 2018 | Mar 22, 2018 |
| 2016 | 45 | 4 | 0 | Dec 15, 2016 | Feb 06, 2017 |
| 2015 | 24 | 3 | 0 | Jan 05, 2016 | Mar 11, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Total Suspended Solids (TSS) | mg/L | 89 | 4 | Jan 05, 2016 | Feb 19, 2026 | Results |
| pH | SU | 87 | 2 | Jan 05, 2016 | Feb 19, 2026 | Results |
| Oil and Grease | mg/L | 82 | 24 | Jan 05, 2016 | Feb 19, 2026 | Results |
| Iron, Total Recoverable | ug/L | 36 | 1 | Dec 23, 2019 | Feb 19, 2026 | Results |
| Iron, Total Recoverable | mg/L | 33 | 1 | Jan 08, 2018 | Nov 27, 2019 | Results |
| Copper, Total | mg/L | 21 | 2 | Nov 08, 2022 | Feb 19, 2026 | Results |
| Lead, Total | mg/L | 21 | 2 | Nov 08, 2022 | Feb 19, 2026 | Results |
| Iron, Dissolved | mg/L | 12 | 5 | Dec 15, 2016 | Feb 06, 2017 | Results |
All results (381 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Feb 19, 2026 | Copper, Total | .00482 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1371584 | |
| Feb 19, 2026 | Iron, Total Recoverable | < .055 | ug/L | Effluent | Qualifying Storm Event | E200.7 | 1371584 | |
| Feb 19, 2026 | Lead, Total | < .0002 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1371584 | |
| Feb 19, 2026 | Oil and Grease | .8 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1371584 | |
| Feb 19, 2026 | pH | 6.5 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1371584 | |
| Feb 19, 2026 | Total Suspended Solids (TSS) | 1.3 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1371584 | |
| Feb 18, 2026 | Copper, Total | .0219 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1369819 | |
| Feb 18, 2026 | Iron, Total Recoverable | .542 | ug/L | Effluent | Qualifying Storm Event | E200.7 | 1369819 | |
| Feb 18, 2026 | Lead, Total | .00143 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1369819 | |
| Feb 18, 2026 | Oil and Grease | 3.8 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1369819 | |
| Feb 18, 2026 | pH | 6.5 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1369819 | |
| Feb 18, 2026 | Total Suspended Solids (TSS) | 7.5 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1369819 | |
| Nov 14, 2025 | Copper, Total | .0466 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1361448 | |
| Nov 14, 2025 | Iron, Total Recoverable | 3860 | ug/L | Effluent | Qualifying Storm Event | E200.7 | 1361448 | |
| Nov 14, 2025 | Lead, Total | .00974 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1361448 | |
| Nov 14, 2025 | Oil and Grease | 30.3 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1361448 | |
| Nov 14, 2025 | Total Suspended Solids (TSS) | 71.4 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1361448 | |
| Oct 14, 2025 | Copper, Total | .0274 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1360477 | |
| Oct 14, 2025 | Iron, Total Recoverable | .662 | ug/L | Effluent | Qualifying Storm Event | E200.7 | 1360477 | |
| Oct 14, 2025 | Lead, Total | .00439 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1360477 | |
| Oct 14, 2025 | Oil and Grease | 6.1 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1360477 | |
| Oct 14, 2025 | pH | 8.44 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1360477 | |
| Oct 14, 2025 | Total Suspended Solids (TSS) | 14.6 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1360477 | |
| Mar 05, 2025 | Copper, Total | .0293 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1330813 | |
| Mar 05, 2025 | Iron, Total Recoverable | 822 | ug/L | Effluent | Qualifying Storm Event | E200.7 | 1330813 | |
| Mar 05, 2025 | Lead, Total | .00248 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1330813 | |
| Mar 05, 2025 | Oil and Grease | 1.3 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1330813 | |
| Mar 05, 2025 | Total Suspended Solids (TSS) | 21.3 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1330813 | |
| Feb 13, 2025 | Copper, Total | ND | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1329055 | |
| Feb 13, 2025 | Copper, Total | ND | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1329055 | |
| Feb 13, 2025 | Iron, Total Recoverable | 189 | ug/L | Effluent | Qualifying Storm Event | E200.7 | 1329055 | |
| Feb 13, 2025 | Iron, Total Recoverable | 481 | ug/L | Effluent | Qualifying Storm Event | E200.7 | 1329055 | |
| Feb 13, 2025 | Lead, Total | .000657 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1329055 | |
| Feb 13, 2025 | Lead, Total | .000648 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1329055 | |
| Feb 13, 2025 | Oil and Grease | 1.4 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1329055 | |
| Feb 13, 2025 | Oil and Grease | 4.5 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1329055 | |
| Feb 13, 2025 | pH | ND | SU | Effluent | Qualifying Storm Event | pH_Paper | 1329055 | |
| Feb 13, 2025 | pH | ND | SU | Effluent | Qualifying Storm Event | pH_Paper | 1329055 | |
| Feb 13, 2025 | Total Suspended Solids (TSS) | 7.5 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1329055 | |
| Feb 13, 2025 | Total Suspended Solids (TSS) | 6.7 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1329055 | |
| Feb 05, 2024 | Copper, Total | .00196 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1280002 | |
| Feb 05, 2024 | Copper, Total | .00326 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1280002 | |
| Feb 05, 2024 | Iron, Total Recoverable | 82.9 | ug/L | Effluent | Qualifying Storm Event | E200.7 | 1280002 | |
| Feb 05, 2024 | Iron, Total Recoverable | 72.9 | ug/L | Effluent | Qualifying Storm Event | E200.7 | 1280002 | |
| Feb 05, 2024 | Lead, Total | < .0002 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1280002 | |
| Feb 05, 2024 | Lead, Total | .000522 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1280002 | |
| Feb 05, 2024 | Oil and Grease | 2.8 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1280002 | |
| Feb 05, 2024 | Oil and Grease | 2.3 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1280002 | |
| Feb 05, 2024 | pH | 6.8 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1280002 | |
| Feb 05, 2024 | pH | 7.6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1280002 |
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 | 5 Violation · 0 Potential (preliminary) · 2 Dismissed | Jul 01, 1996 – Aug 24, 2022 | Oct 21, 2026 | All violations |
| Enforcement actions | 6 | 6 issued · 0 draft · 0 withdrawn, rescinded or superseded | Apr 28, 1998 – Sep 28, 2022 | Oct 21, 2026 | All actions |
| Inspections | 3 | inspections, not findings | Dec 19, 2001 – Sep 22, 2022 | 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 (27 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jul 08, 2026 | Annual reports | 1335402 | Annual report 2025 | — | |
| Jun 19, 2025 | Annual reports | 1294216 | Annual report 2024 | — | |
| Jul 08, 2024 | Annual reports | 1243302 | Annual report 2023 | — | |
| Jul 06, 2023 | Annual reports | 1189305 | Annual report 2022 | — | |
| Sep 28, 2022 | Enforcement actions | 447708 | Verbal Communication | Historical | |
| Sep 22, 2022 | Inspections | 2057795 | Complaint | Finalized | Follow-up Inspection Needed |
| Aug 24, 2022 | Violations | 882972 | Deficient BMP Implementation | Violation | Inspection |
| Jul 14, 2022 | Annual reports | 1112683 | Annual report 2021 | — | |
| Jul 09, 2021 | Annual reports | 1068693 | Annual report 2020 | — | |
| Jun 04, 2020 | Annual reports | 985953 | Annual report 2019 | — | |
| Jul 03, 2019 | Annual reports | 953507 | Annual report 2018 | — | |
| Jul 06, 2018 | Annual reports | 938923 | Annual report 2017 | — | |
| Jul 13, 2017 | Annual reports | 878162 | Annual report 2016 | — | |
| Mar 10, 2017 | Enforcement actions | 425603 | NOV (Notice of Violation) | Historical | |
| Jan 10, 2017 | Inspections | 2032895 | Enforcement Follow-up | — | Additional Info Required |
| Jan 10, 2017 | Violations | 862551 | Incomplete/Insufficient SWPPP | Violation | Inspection |
| Jan 10, 2017 | Violations | 862552 | Deficient BMP Implementation | Violation | Inspection |
| Jul 14, 2016 | Annual reports | 845060 | Annual report 2015 | — | |
| May 18, 2012 | Enforcement actions | 408717 | SEL (Staff Enforcement Letter) | Historical | |
| Oct 19, 2010 | Violations | 847907 | Deficient BMP Implementation | Violation | Report |
| Jun 21, 2010 | Enforcement actions | 404314 | SEL (Staff Enforcement Letter) | Historical | |
| Oct 31, 2008 | Violations | 843632 | Deficient BMP Implementation | Violation | Report |
| Aug 24, 2005 | Enforcement actions | 408131 | 1st NNC - AR (First Notice of Non-Compliance (annual report)) | Historical | |
| Jul 01, 2005 | Violations | 847440 | Late Report | Dismissed | Report |
| Dec 19, 2001 | Inspections | 1735502 | B Type compliance | — | Additional Info Required |
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.