Composites Horizons Inc
Terminated WDID 4 19I020856 Covina, 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
- Covina, Los Angeles County
- Region 4 · Los Angeles · Location · Statewide map
- Receiving water
- Walnut Creek (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; 1 on the 2026 303(d) list
- Proximity only; not a discharge pathway · Nearby waterbodies
- Monitoring results Evidence: facility-reported
- 54 distinct results, 8 reporting years (2016 to 2023)
- Most recent sample Jan 22, 2024 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 2 inspections · 5 violation records · 4 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
- 34.09131, -117.92118
- 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
- 1471 Industrial Park St, Covina 91722
- Regional Water Board
- 4 — Los Angeles
HUC12 watershed Evidence: spatial
- Big Dalton Wash HUC12 180701060402
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
- Composites Horizons Inc
- Primary industry (SIC)
- 3089-Plastics Products, NEC
- Application ID
- 324195
- NOI processed
- May 02, 2007
- Termination effective
- Jul 10, 2024
- Last certified
- Aug 18, 2021
- Facility size
- 80000 SqFt
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 324195 | Industrial | Terminated | May 02, 2007 | Jul 10, 2024 | Aug 18, 2021 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Walnut Creek
- 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 (3)
- C2 candidate in another or unknown Regional Board
- C3 facility HUC12 not corroborated (complete published list)
- C4 candidate more than 5 km away
1 official waterbody shares 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 |
|---|---|---|---|
| San Dimas Wash (Los Angeles County) CAR4052000020210709035177 | 913 m | listed | 3 |
| Big Dalton Wash CAR4052000020210323064004 | 918 m | not listed | 0 |
Waterbodies within 1.0 km of the reported facility location. Method proximity/1.
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.
54 distinct measurements across 4 parameters, most recent sample Jan 22, 2024.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2023 | 4 | 4 | 0 | Jan 22, 2024 | Jan 22, 2024 |
| 2022 | 8 | 4 | 0 | Dec 12, 2022 | Mar 10, 2023 |
| 2021 | 7 | 4 | 0 | Dec 14, 2021 | Mar 28, 2022 |
| 2020 | 8 | 4 | 0 | Jan 29, 2021 | Feb 12, 2021 |
| 2019 | 9 | 3 | 0 | Dec 04, 2019 | Mar 10, 2020 |
| 2018 | 9 | 3 | 0 | Dec 05, 2018 | May 16, 2019 |
| 2017 | 3 | 3 | 0 | Mar 02, 2018 | Mar 02, 2018 |
| 2016 | 6 | 3 | 0 | Dec 15, 2016 | Dec 30, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Oil and Grease | mg/L | 16 | 12 | Dec 15, 2016 | Jan 22, 2024 | Results |
| pH | SU | 16 | 0 | Dec 15, 2016 | Jan 22, 2024 | Results |
| Total Suspended Solids (TSS) | mg/L | 16 | 1 | Dec 15, 2016 | Jan 22, 2024 | Results |
| Lead, Total | mg/L | 6 | 0 | Jan 29, 2021 | Jan 22, 2024 | Results |
All results (54 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Jan 22, 2024 | Lead, Total | .0014 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1276187 | |
| Jan 22, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1276187 | |
| Jan 22, 2024 | pH | 6.5 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1276187 | |
| Jan 22, 2024 | Total Suspended Solids (TSS) | 6 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1276187 | |
| Mar 10, 2023 | Lead, Total | .0022 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1231469 | |
| Mar 10, 2023 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1231469 | |
| Mar 10, 2023 | pH | 6.8 | SU | Effluent | Qualifying Storm Event | pH_Field | 1231469 | |
| Mar 10, 2023 | Total Suspended Solids (TSS) | 6 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1231469 | |
| Dec 12, 2022 | Lead, Total | .00034 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1220152 | |
| Dec 12, 2022 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1220152 | |
| Dec 12, 2022 | pH | 6.5 | SU | Effluent | Qualifying Storm Event | pH_Field | 1220152 | |
| Dec 12, 2022 | Total Suspended Solids (TSS) | 6 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1220152 | |
| Mar 28, 2022 | Lead, Total | .003 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1180465 | |
| Mar 28, 2022 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1180465 | |
| Mar 28, 2022 | pH | 6.5 | SU | Effluent | Qualifying Storm Event | pH_Field | 1180465 | |
| Mar 28, 2022 | Total Suspended Solids (TSS) | 13 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1180465 | |
| Dec 14, 2021 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1172783 | |
| Dec 14, 2021 | pH | 6.5 | SU | Effluent | Qualifying Storm Event | pH_Field | 1172783 | |
| Dec 14, 2021 | Total Suspended Solids (TSS) | 7 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1172783 | |
| Feb 12, 2021 | Lead, Total | .002 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1144898 | |
| Feb 12, 2021 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1144898 | |
| Feb 12, 2021 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Field | 1144898 | |
| Feb 12, 2021 | Total Suspended Solids (TSS) | 47 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1144898 | |
| Jan 29, 2021 | Lead, Total | .004 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1144896 | |
| Jan 29, 2021 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1144896 | |
| Jan 29, 2021 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Field | 1144896 | |
| Jan 29, 2021 | Total Suspended Solids (TSS) | 6 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1144896 | |
| Mar 10, 2020 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1102905 | |
| Mar 10, 2020 | pH | 6.5 | SU | Effluent | Qualifying Storm Event | pH_Field | 1102905 | |
| Mar 10, 2020 | Total Suspended Solids (TSS) | 14 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1102905 | |
| Dec 23, 2019 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1097188 | |
| Dec 23, 2019 | pH | 6.5 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1097188 | |
| Dec 23, 2019 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 1097188 | |
| Dec 04, 2019 | Oil and Grease | 9 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1097187 | |
| Dec 04, 2019 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1097187 | |
| Dec 04, 2019 | Total Suspended Solids (TSS) | 104 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1097187 | |
| May 16, 2019 | Oil and Grease | 1 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1058220 | |
| May 16, 2019 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1058220 | |
| May 16, 2019 | Total Suspended Solids (TSS) | 17 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1058220 | |
| Feb 05, 2019 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1045601 | |
| Feb 05, 2019 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1045601 | |
| Feb 05, 2019 | Total Suspended Solids (TSS) | 5 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1045601 | |
| Dec 05, 2018 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1033080 | |
| Dec 05, 2018 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1033080 | |
| Dec 05, 2018 | Total Suspended Solids (TSS) | 12 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1033080 | |
| Mar 02, 2018 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 997605 | |
| Mar 02, 2018 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 997605 | |
| Mar 02, 2018 | Total Suspended Solids (TSS) | 21 | mg/L | Effluent | Qualifying Storm Event | A2540D | 997605 | |
| Dec 30, 2016 | Oil and Grease | 2 | mg/L | Effluent | Qualifying Storm Event | E1664A | 913941 | |
| Dec 30, 2016 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 913941 |
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 | 5 Violation · 0 Potential (preliminary) · 0 Dismissed | Jun 22, 2009 – Jan 08, 2021 | Oct 21, 2026 | All violations |
| Enforcement actions | 4 | 4 issued · 0 draft · 0 withdrawn, rescinded or superseded | Jun 22, 2009 – Jan 08, 2021 | Oct 21, 2026 | All actions |
| Inspections | 2 | inspections, not findings | Dec 03, 2010 – Aug 19, 2024 | Oct 21, 2026 | All inspections |
| Annual reports | 9 | certified reports (contents not shown) | 2015 – 2023 | 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 |
|---|---|---|---|---|---|
| Aug 19, 2024 | Inspections | 2065292 | NOT | Finalized | No Further Action |
| Jul 01, 2024 | Annual reports | 1242526 | Annual report 2023 | — | |
| Jul 12, 2023 | Annual reports | 1188498 | Annual report 2022 | — | |
| Jul 05, 2022 | Annual reports | 1111804 | Annual report 2021 | — | |
| Aug 30, 2021 | Annual reports | 1067773 | Annual report 2020 | — | |
| Jan 08, 2021 | Enforcement actions | 439650 | NOV (Notice of Violation) | Historical | |
| Jan 08, 2021 | Violations | 875942 | Incomplete/Insufficient SWPPP | Violation | Report |
| Jul 27, 2020 | Annual reports | 984971 | Annual report 2019 | — | |
| Jul 16, 2019 | Annual reports | 952487 | Annual report 2018 | — | |
| Jul 09, 2018 | Annual reports | 937900 | Annual report 2017 | — | |
| Aug 22, 2017 | Annual reports | 877095 | Annual report 2016 | — | |
| Dec 28, 2016 | Annual reports | 840525 | Annual report 2015 | — | |
| Jan 13, 2011 | Enforcement actions | 405411 | 13267 Letter/Order (Water Code section 13267 letter or order) | Historical | |
| Dec 03, 2010 | Enforcement actions | 403376 | NTC (Notice to Comply) | Historical | |
| Dec 03, 2010 | Inspections | 2011974 | B Type compliance | — | Additional Info Required |
| Dec 03, 2010 | Violations | 843070 | Deficient BMP Implementation | Violation | Inspection |
| Dec 03, 2010 | Violations | 844840 | Incomplete/Insufficient SWPPP | Violation | Inspection |
| Dec 03, 2010 | Violations | 844841 | Unauthorized NSWD | Violation | Inspection |
| Jun 22, 2009 | Enforcement actions | 405950 | 1st NNC - AR (First Notice of Non-Compliance (annual report)) | Historical | |
| Jun 22, 2009 | Violations | 844615 | Deficient Report | 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.