Principle Plastics
Active WDID 4 19I027074 Gardena, 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
- Gardena, Los Angeles County
- Region 4 · Los Angeles · Location · Statewide map
- Receiving water
- Dominguez Channel (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
- 72 distinct results, 11 reporting years (2015 to 2025)
- Most recent sample Nov 21, 2025 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 2 inspections · 2 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
- 33.90917, -118.29508
- Precision
- 5 decimal places
- Shared point
- 3 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
- 1136 W 135th St, Gardena 90247
- Regional Water Board
- 4 — Los Angeles
HUC12 watershed Evidence: spatial
- Lower Dominguez Channel HUC12 180701060102
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
- David Hoyt
- Primary industry (SIC)
- 3089-Plastics Products, NEC
- Application ID
- 189835
- NOI processed
- Mar 08, 2017
- Last certified
- Sep 03, 2026
- Facility size
- 52469 SqFt
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 189835 | Industrial | Active | Mar 08, 2017 | — | Sep 03, 2026 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Dominguez Channel
- Discharges directly / indirectly
- Y / N (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
2 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
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.
72 distinct measurements across 3 parameters, most recent sample Nov 21, 2025.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2025 | 3 | 3 | 0 | Nov 21, 2025 | Nov 21, 2025 |
| 2024 | 3 | 3 | 0 | Feb 05, 2025 | Feb 05, 2025 |
| 2023 | 6 | 3 | 0 | Dec 22, 2023 | Feb 20, 2024 |
| 2022 | 6 | 3 | 0 | Nov 08, 2022 | Dec 12, 2022 |
| 2021 | 3 | 3 | 0 | Oct 25, 2021 | Oct 25, 2021 |
| 2020 | 9 | 3 | 0 | Dec 28, 2020 | Mar 15, 2021 |
| 2019 | 6 | 3 | 0 | Nov 26, 2019 | Mar 04, 2020 |
| 2018 | 6 | 3 | 0 | Nov 29, 2018 | Jan 14, 2019 |
| 2017 | 6 | 3 | 0 | Jan 10, 2018 | Mar 03, 2018 |
| 2016 | 12 | 3 | 0 | Oct 17, 2016 | Jan 11, 2017 |
| 2015 | 12 | 3 | 0 | Sep 15, 2015 | Mar 11, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Oil and Grease | mg/L | 24 | 18 | Sep 15, 2015 | Nov 21, 2025 | Results |
| pH | SU | 24 | 0 | Sep 15, 2015 | Nov 21, 2025 | Results |
| Total Suspended Solids (TSS) | mg/L | 24 | 2 | Sep 15, 2015 | Nov 21, 2025 | Results |
All results (72 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Nov 21, 2025 | Oil and Grease | ND 1.4 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1360919 | |
| Nov 21, 2025 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1360919 | |
| Nov 21, 2025 | Total Suspended Solids (TSS) | ND 1 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1360919 | |
| Feb 05, 2025 | Oil and Grease | 3.3 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1324078 | |
| Feb 05, 2025 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1324078 | |
| Feb 05, 2025 | Total Suspended Solids (TSS) | 1 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1324078 | |
| Feb 20, 2024 | Oil and Grease | ND 1.4 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1281259 | |
| Feb 20, 2024 | pH | 8 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1281259 | |
| Feb 20, 2024 | Total Suspended Solids (TSS) | 2.3 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1281259 | |
| Dec 22, 2023 | Oil and Grease | 4.6 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1273280 | |
| Dec 22, 2023 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1273280 | |
| Dec 22, 2023 | Total Suspended Solids (TSS) | ND 1 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1273280 | |
| Dec 12, 2022 | Oil and Grease | ND 1.7 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1224433 | |
| Dec 12, 2022 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1224433 | |
| Dec 12, 2022 | Total Suspended Solids (TSS) | 3.8 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1224433 | |
| Nov 08, 2022 | Oil and Grease | ND 2.8 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1218893 | |
| Nov 08, 2022 | pH | 8 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1218893 | |
| Nov 08, 2022 | Total Suspended Solids (TSS) | 1.2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1218893 | |
| Oct 25, 2021 | Oil and Grease | ND 1.4 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1169235 | |
| Oct 25, 2021 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1169235 | |
| Oct 25, 2021 | Total Suspended Solids (TSS) | 40 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1169235 | |
| Mar 15, 2021 | Oil and Grease | 4.1 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1149848 | |
| Mar 15, 2021 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1149848 | |
| Mar 15, 2021 | Total Suspended Solids (TSS) | 4.8 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1149848 | |
| Mar 03, 2021 | Oil and Grease | ND 1.4 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1146570 | |
| Mar 03, 2021 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1146570 | |
| Mar 03, 2021 | Total Suspended Solids (TSS) | 15 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1146570 | |
| Dec 28, 2020 | Oil and Grease | ND 1.4 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1140072 | |
| Dec 28, 2020 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1140072 | |
| Dec 28, 2020 | Total Suspended Solids (TSS) | 7.2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1140072 | |
| Mar 04, 2020 | Oil and Grease | ND 1.4 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1105808 | |
| Mar 04, 2020 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1105808 | |
| Mar 04, 2020 | Total Suspended Solids (TSS) | 120 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1105808 | |
| Nov 26, 2019 | Oil and Grease | 1.9 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1094111 | |
| Nov 26, 2019 | pH | 6.85 | SU | Effluent | Qualifying Storm Event | A4500HB | 1094111 | |
| Nov 26, 2019 | Total Suspended Solids (TSS) | 4.1 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1094111 | |
| Jan 14, 2019 | Oil and Grease | ND 1.5 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1040722 | |
| Jan 14, 2019 | pH | 6.9 | SU | Effluent | Qualifying Storm Event | A4500HB | 1040722 | |
| Jan 14, 2019 | Total Suspended Solids (TSS) | 3.4 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1040722 | |
| Nov 29, 2018 | Oil and Grease | ND 1.3 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1033096 | |
| Nov 29, 2018 | pH | 6.9 | SU | Effluent | Qualifying Storm Event | A4500HB | 1033096 | |
| Nov 29, 2018 | Total Suspended Solids (TSS) | 5.2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1033096 | |
| Mar 03, 2018 | Oil and Grease | ND 1.5 | mg/L | Effluent | Qualifying Storm Event | E1664A | 995359 | |
| Mar 03, 2018 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 995359 | |
| Mar 03, 2018 | Total Suspended Solids (TSS) | 20 | mg/L | Effluent | Qualifying Storm Event | A2540D | 995359 | |
| Jan 10, 2018 | Oil and Grease | 1.7 | mg/L | Effluent | Qualifying Storm Event | E1664A | 990805 | |
| Jan 10, 2018 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 990805 | |
| Jan 10, 2018 | Total Suspended Solids (TSS) | 4.7 | mg/L | Effluent | Qualifying Storm Event | A2540D | 990805 | |
| Jan 11, 2017 | Oil and Grease | ND 1.4 | mg/L | Effluent | Qualifying Storm Event | E1664A | 918534 | |
| Jan 11, 2017 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 918534 |
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 | Jun 19, 2009 – Jul 16, 2026 | Oct 21, 2026 | All violations |
| Enforcement actions | 5 | 5 issued · 0 draft · 0 withdrawn, rescinded or superseded | Aug 23, 2005 – Sep 17, 2026 | Oct 21, 2026 | All actions |
| Inspections | 2 | inspections, not findings | Aug 30, 2007 – Oct 02, 2026 | 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 (20 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Oct 02, 2026 | Inspections | 2072111 | NOT | Finalized | Additional Info Required |
| Sep 22, 2026 | Annual reports | 1334279 | Annual report 2025 | — | |
| Sep 17, 2026 | Enforcement actions | 473316 | 1st NNC - AR (First Notice of Non-Compliance (annual report)) | Historical | |
| Jul 22, 2026 | Enforcement actions | 470363 | NOV (Notice of Violation) | Historical | |
| Jul 16, 2026 | Violations | 904441 | Late Report | Violation | Report |
| Jun 12, 2025 | Annual reports | 1293053 | Annual report 2024 | — | |
| Jun 13, 2024 | Annual reports | 1242062 | Annual report 2023 | — | |
| Jun 19, 2023 | Annual reports | 1188003 | Annual report 2022 | — | |
| Jun 02, 2022 | Annual reports | 1111273 | Annual report 2021 | — | |
| Jun 07, 2021 | Annual reports | 1067216 | Annual report 2020 | — | |
| Jun 12, 2020 | Annual reports | 984380 | Annual report 2019 | — | |
| Apr 10, 2019 | Annual reports | 951888 | Annual report 2018 | — | |
| Jun 18, 2018 | Annual reports | 937299 | Annual report 2017 | — | |
| Jun 22, 2017 | Annual reports | 876453 | Annual report 2016 | — | |
| Jan 17, 2017 | Annual reports | 842953 | Annual report 2015 | — | |
| Jan 13, 2011 | Enforcement actions | 405240 | 13267 Letter/Order (Water Code section 13267 letter or order) | Historical | |
| Jun 19, 2009 | Violations | 844468 | Deficient Report | Violation | Report |
| Aug 30, 2007 | Inspections | 1733811 | B Type compliance | — | |
| Dec 16, 2005 | Enforcement actions | 308677 | NOV (Notice of Violation) | Historical | NOV |
| Aug 23, 2005 | Enforcement actions | 306320 | NOV (Notice of Violation) | Historical | NOV |
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.