Americas Styrenics
Active WDID 4 19I022688 Torrance, 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
- Torrance, 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
- 303 distinct results, 11 reporting years (2015 to 2025)
- Most recent sample Feb 23, 2026 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 1 inspection · 0 violation records · 0 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
- 33.84589, -118.32879
- 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
- 305 Crenshaw Blvd, Torrance 90503
- 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
- Americas Styrenics LLC
- Primary industry (SIC)
- 2821-Plastics Material and Synthetic Resins, and Nonvulcanizable Elastomers
- Application ID
- 404424
- NOI processed
- Jun 25, 2010
- Last certified
- Jan 16, 2019
- Facility size
- 55 Acres
- Impervious area
- 50 %
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 404424 | Industrial | Active | Jun 25, 2010 | — | Jan 16, 2019 |
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
- 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
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
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 |
|---|---|---|---|---|---|---|---|
| R4 - Los Angeles and Long Beach Harbor Waters TMDL | Dominguez Channel and Torrance Lateral Channel | Copper, Total | .0097 mg/L | NEL instantaneous | FINAL | 2032-05-05 | Y |
| R4 - Los Angeles and Long Beach Harbor Waters TMDL | Dominguez Channel and Torrance Lateral Channel | Copper, Total | .20751 mg/L | TMDL NAL instantaneous | INTERIM | 2020-07-01 | Y |
| R4 - Los Angeles and Long Beach Harbor Waters TMDL | Dominguez Channel and Torrance Lateral Channel | Lead, Total | .0427 mg/L | NEL instantaneous | FINAL | 2032-05-05 | Y |
| R4 - Los Angeles and Long Beach Harbor Waters TMDL | Dominguez Channel and Torrance Lateral Channel | Lead, Total | .12288 mg/L | TMDL NAL instantaneous | INTERIM | 2020-07-01 | Y |
| R4 - Los Angeles and Long Beach Harbor Waters TMDL | Dominguez Channel and Torrance Lateral Channel | Zinc, Total | .0697 mg/L | NEL instantaneous | FINAL | 2032-05-05 | Y |
| R4 - Los Angeles and Long Beach Harbor Waters TMDL | Dominguez Channel and Torrance Lateral Channel | Zinc, Total | .89887 mg/L | TMDL NAL instantaneous | INTERIM | 2020-07-01 | Y |
6 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.
303 distinct measurements across 36 parameters, most recent sample Feb 23, 2026.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2025 | 40 | 10 | 0 | Oct 16, 2025 | Feb 23, 2026 |
| 2024 | 20 | 10 | 0 | Feb 10, 2025 | Feb 18, 2025 |
| 2023 | 30 | 10 | 0 | Aug 21, 2023 | Jan 09, 2024 |
| 2022 | 40 | 10 | 0 | Nov 10, 2022 | Jan 11, 2023 |
| 2021 | 30 | 10 | 0 | Dec 30, 2021 | Mar 31, 2022 |
| 2020 | 19 | 10 | 0 | Feb 09, 2021 | Feb 16, 2021 |
| 2019 | 24 | 8 | 0 | Dec 06, 2019 | Jan 22, 2020 |
| 2018 | 31 | 8 | 0 | Dec 03, 2018 | Jan 22, 2019 |
| 2017 | 15 | 8 | 0 | Feb 06, 2018 | Mar 07, 2018 |
| 2016 | 21 | 7 | 0 | Nov 22, 2016 | Jan 12, 2017 |
| 2015 | 33 | 33 | 0 | May 05, 2016 | May 05, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Ethylbenzene | ug/L | 31 | 31 | May 05, 2016 | Feb 23, 2026 | Results |
| Oil and Grease | mg/L | 31 | 24 | May 05, 2016 | Feb 23, 2026 | Results |
| pH | SU | 31 | 0 | May 05, 2016 | Feb 23, 2026 | Results |
| Styrene | ug/L | 31 | 26 | May 05, 2016 | Feb 23, 2026 | Results |
| Total Suspended Solids (TSS) | mg/L | 31 | 0 | May 05, 2016 | Feb 23, 2026 | Results |
| Zinc, Total | mg/L | 31 | 0 | May 05, 2016 | Feb 23, 2026 | Results |
| Ethylene glycol | mg/L | 29 | 26 | May 05, 2016 | Feb 23, 2026 | Results |
| Biphenyl | mg/L | 26 | 26 | Mar 07, 2018 | Feb 23, 2026 | Results |
| Copper, Total | mg/L | 18 | 0 | Feb 09, 2021 | Feb 23, 2026 | Results |
| Lead, Total | mg/L | 18 | 0 | Feb 09, 2021 | Feb 23, 2026 | Results |
| 1,1,1-Trichloroethane | ug/L | 1 | 1 | May 05, 2016 | May 05, 2016 | Results |
| 1,1,2,2-Tetrachloroethane | ug/L | 1 | 1 | May 05, 2016 | May 05, 2016 | Results |
Show 24 more parameters
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| 1,1,2-Trichloroethane | ug/L | 1 | 1 | May 05, 2016 | May 05, 2016 | Results |
| 1,1-Dichloroethane | ug/L | 1 | 1 | May 05, 2016 | May 05, 2016 | Results |
| 1,2-Dichlorobenzene | ug/L | 1 | 1 | May 05, 2016 | May 05, 2016 | Results |
| 1,2-Dichloroethane | ug/L | 1 | 1 | May 05, 2016 | May 05, 2016 | Results |
| 1,2-Dichloropropane | ug/L | 1 | 1 | May 05, 2016 | May 05, 2016 | Results |
| 1,3-Dichlorobenzene | ug/L | 1 | 1 | May 05, 2016 | May 05, 2016 | Results |
| 1,3-Dichloropropane | ug/L | 1 | 1 | May 05, 2016 | May 05, 2016 | Results |
| 1,4-Dichlorobenzene | ug/L | 1 | 1 | May 05, 2016 | May 05, 2016 | Results |
| 2-propanone (Acetone) | ug/L | 1 | 0 | May 05, 2016 | May 05, 2016 | Results |
| Benzene | ug/L | 1 | 1 | May 05, 2016 | May 05, 2016 | Results |
| Bromoform | ug/L | 1 | 1 | May 05, 2016 | May 05, 2016 | Results |
| Carbon Tetrachloride | ug/L | 1 | 1 | May 05, 2016 | May 05, 2016 | Results |
| Chlorobenzene | ug/L | 1 | 1 | May 05, 2016 | May 05, 2016 | Results |
| Chloroethane | mg/L | 1 | 1 | May 05, 2016 | May 05, 2016 | Results |
| Chloroform | ug/L | 1 | 1 | May 05, 2016 | May 05, 2016 | Results |
| Dibromodichloromethane | ug/L | 1 | 1 | May 05, 2016 | May 05, 2016 | Results |
| Dibromomethane | ug/L | 1 | 1 | May 05, 2016 | May 05, 2016 | Results |
| Diesel Oil | mg/L | 1 | 0 | May 05, 2016 | May 05, 2016 | Results |
| Methylene Chloride | ug/L | 1 | 0 | May 05, 2016 | May 05, 2016 | Results |
| Tetrachloroethanes, Sum | ug/L | 1 | 1 | May 05, 2016 | May 05, 2016 | Results |
| Toluene | ug/L | 1 | 0 | May 05, 2016 | May 05, 2016 | Results |
| Trichlorofluoromethane | ug/L | 1 | 1 | May 05, 2016 | May 05, 2016 | Results |
| Vinyl Chloride | ug/L | 1 | 1 | May 05, 2016 | May 05, 2016 | Results |
| Xylenes, Total | ug/L | 1 | 1 | May 05, 2016 | May 05, 2016 | Results |
All results (303 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Feb 23, 2026 | Biphenyl | < .027 | mg/L | Effluent | Qualifying Storm Event | 1368586 | ||
| Feb 23, 2026 | Copper, Total | .0025 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1368586 | |
| Feb 23, 2026 | Ethylbenzene | < .34 | ug/L | Effluent | Qualifying Storm Event | E624.1 | 1368586 | |
| Feb 23, 2026 | Ethylene glycol | < 12 | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1368586 | |
| Feb 23, 2026 | Lead, Total | .00065 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1368586 | |
| Feb 23, 2026 | Oil and Grease | .96 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1368586 | |
| Feb 23, 2026 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1368586 | |
| Feb 23, 2026 | Styrene | < .74 | ug/L | Effluent | Qualifying Storm Event | 1368586 | ||
| Feb 23, 2026 | Total Suspended Solids (TSS) | 3.5 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1368586 | |
| Feb 23, 2026 | Zinc, Total | .11 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1368586 | |
| Jan 07, 2026 | Biphenyl | < 26 | mg/L | Effluent | Qualifying Storm Event | 1364921 | ||
| Jan 07, 2026 | Copper, Total | .0036 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1364921 | |
| Jan 07, 2026 | Ethylbenzene | < .34 | ug/L | Effluent | Qualifying Storm Event | E624.1 | 1364921 | |
| Jan 07, 2026 | Ethylene glycol | < 12 | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1364921 | |
| Jan 07, 2026 | Lead, Total | .0007 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1364921 | |
| Jan 07, 2026 | Oil and Grease | 1.1 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1364921 | |
| Jan 07, 2026 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1364921 | |
| Jan 07, 2026 | Styrene | < .74 | ug/L | Effluent | Qualifying Storm Event | 1364921 | ||
| Jan 07, 2026 | Total Suspended Solids (TSS) | 3.7 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1364921 | |
| Jan 07, 2026 | Zinc, Total | .18 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1364921 | |
| Nov 18, 2025 | Biphenyl | < 25 | mg/L | Effluent | Qualifying Storm Event | 1360033 | ||
| Nov 18, 2025 | Copper, Total | .0018 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1360033 | |
| Nov 18, 2025 | Ethylbenzene | < .34 | ug/L | Effluent | Qualifying Storm Event | E624.1 | 1360033 | |
| Nov 18, 2025 | Ethylene glycol | < 12 | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1360033 | |
| Nov 18, 2025 | Lead, Total | .00061 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1360033 | |
| Nov 18, 2025 | Oil and Grease | .97 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1360033 | |
| Nov 18, 2025 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1360033 | |
| Nov 18, 2025 | Styrene | < .74 | ug/L | Effluent | Qualifying Storm Event | 1360033 | ||
| Nov 18, 2025 | Total Suspended Solids (TSS) | 3 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1360033 | |
| Nov 18, 2025 | Zinc, Total | .09 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1360033 | |
| Oct 16, 2025 | Biphenyl | < 25 | mg/L | Effluent | Qualifying Storm Event | 1360033 | ||
| Oct 16, 2025 | Copper, Total | .0072 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1360033 | |
| Oct 16, 2025 | Ethylbenzene | < .7 | ug/L | Effluent | Qualifying Storm Event | E624.1 | 1360033 | |
| Oct 16, 2025 | Ethylene glycol | < 12 | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1360033 | |
| Oct 16, 2025 | Lead, Total | .0023 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1360033 | |
| Oct 16, 2025 | Oil and Grease | < .5 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1360033 | |
| Oct 16, 2025 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1360033 | |
| Oct 16, 2025 | Styrene | < .74 | ug/L | Effluent | Qualifying Storm Event | 1360033 | ||
| Oct 16, 2025 | Total Suspended Solids (TSS) | 9.6 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1360033 | |
| Oct 16, 2025 | Zinc, Total | .39 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1360033 | |
| Feb 18, 2025 | Biphenyl | < .028 | mg/L | Effluent | Qualifying Storm Event | 1324364 | ||
| Feb 18, 2025 | Copper, Total | .0032 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1324364 | |
| Feb 18, 2025 | Ethylbenzene | < .23 | ug/L | Effluent | Qualifying Storm Event | E624.1 | 1324364 | |
| Feb 18, 2025 | Ethylene glycol | < 12 | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1324364 | |
| Feb 18, 2025 | Lead, Total | .0009 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1324364 | |
| Feb 18, 2025 | Oil and Grease | < .5 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1324364 | |
| Feb 18, 2025 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1324364 | |
| Feb 18, 2025 | Styrene | < .74 | ug/L | Effluent | Qualifying Storm Event | 1324364 | ||
| Feb 18, 2025 | Total Suspended Solids (TSS) | 8.2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1324364 | |
| Feb 18, 2025 | Zinc, Total | .12 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1324364 |
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 | 0 | 0 Violation · 0 Potential (preliminary) · 0 Dismissed | — | Oct 21, 2026 | |
| Enforcement actions | 0 | 0 issued · 0 draft · 0 withdrawn, rescinded or superseded | — | Oct 21, 2026 | |
| Inspections | 1 | inspections, not findings | Jan 25, 2012 – Jan 25, 2012 | 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 (12 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jun 24, 2026 | Annual reports | 1337575 | Annual report 2025 | — | |
| Jun 18, 2025 | Annual reports | 1296495 | Annual report 2024 | — | |
| Jun 19, 2024 | Annual reports | 1245704 | Annual report 2023 | — | |
| Jun 21, 2023 | Annual reports | 1191823 | Annual report 2022 | — | |
| Jun 14, 2022 | Annual reports | 1115425 | Annual report 2021 | — | |
| Jun 24, 2021 | Annual reports | 1063525 | Annual report 2020 | — | |
| Jun 25, 2020 | Annual reports | 980425 | Annual report 2019 | — | |
| Jun 20, 2019 | Annual reports | 956690 | Annual report 2018 | — | |
| Jun 14, 2018 | Annual reports | 942119 | Annual report 2017 | — | |
| Jun 29, 2017 | Annual reports | 881538 | Annual report 2016 | — | |
| Jul 15, 2016 | Annual reports | 842835 | Annual report 2015 | — | |
| Jan 25, 2012 | Inspections | 2015066 | B Type compliance | — | Follow-up Inspection Needed |
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.