Sir Mix Concrete
Active WDID 4 19I004214 Carson, 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
- Carson, 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
- 128 distinct results, 8 reporting years (2018 to 2025)
- Most recent sample Feb 16, 2026 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 4 inspections · 11 violation records · 11 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
- 33.79954, -118.25672
- 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
- 1001 E Lomita, Carson 90744
- Regional Water Board
- 4 — Los Angeles
HUC12 watershed Evidence: spatial
- Long Beach Harbor HUC12 180701060701
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
- Sir Mix Concrete
- Primary industry (SIC)
- 3272-Concrete Products, Except Block and Brick
- Application ID
- 189323
- NOI processed
- Apr 06, 1992
- Last certified
- Apr 10, 2024
- Facility size
- 3 Acres
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 189323 | Industrial | Active | Apr 06, 1992 | — | Apr 10, 2024 |
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.
128 distinct measurements across 4 parameters, most recent sample Feb 16, 2026.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2025 | 8 | 4 | 0 | Feb 16, 2026 | Feb 16, 2026 |
| 2024 | 12 | 4 | 0 | Mar 13, 2025 | Mar 13, 2025 |
| 2023 | 12 | 4 | 0 | Feb 01, 2024 | Feb 01, 2024 |
| 2022 | 22 | 4 | 0 | Nov 08, 2022 | Mar 14, 2023 |
| 2021 | 16 | 4 | 0 | Dec 14, 2021 | Mar 28, 2022 |
| 2020 | 15 | 4 | 0 | Dec 28, 2020 | Mar 15, 2021 |
| 2019 | 19 | 3 | 0 | Dec 23, 2019 | Apr 06, 2020 |
| 2018 | 24 | 3 | 0 | Nov 29, 2018 | Jan 31, 2019 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Oil and Grease | mg/L | 37 | 28 | Nov 29, 2018 | Feb 16, 2026 | Results |
| pH | SU | 37 | 0 | Nov 29, 2018 | Feb 16, 2026 | Results |
| Total Suspended Solids (TSS) | mg/L | 33 | 2 | Nov 29, 2018 | Feb 16, 2026 | Results |
| Iron, Total | mg/L | 21 | 6 | Dec 28, 2020 | Feb 16, 2026 | Results |
All results (128 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Feb 16, 2026 | Iron, Total | .502 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1376678 | |
| Feb 16, 2026 | Iron, Total | .829 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1376678 | |
| Feb 16, 2026 | Oil and Grease | DNQ .41 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1376678 | |
| Feb 16, 2026 | Oil and Grease | DNQ .84 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1376678 | |
| Feb 16, 2026 | pH | 7.1 | SU | Effluent | Qualifying Storm Event | pH_Field | 1376678 | |
| Feb 16, 2026 | pH | 7.3 | SU | Effluent | Qualifying Storm Event | pH_Field | 1376678 | |
| Feb 16, 2026 | Total Suspended Solids (TSS) | 10 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1376678 | |
| Feb 16, 2026 | Total Suspended Solids (TSS) | 24.9 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1376678 | |
| Mar 13, 2025 | Iron, Total | ND | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1330499 | |
| Mar 13, 2025 | Iron, Total | ND | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1330499 | |
| Mar 13, 2025 | Iron, Total | ND | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1330499 | |
| Mar 13, 2025 | Oil and Grease | < 2 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1330499 | |
| Mar 13, 2025 | Oil and Grease | < 1.8 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1330499 | |
| Mar 13, 2025 | Oil and Grease | 2.3 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1330499 | |
| Mar 13, 2025 | pH | 7.1 | SU | Effluent | Qualifying Storm Event | pH_Field | 1330499 | |
| Mar 13, 2025 | pH | 7.3 | SU | Effluent | Qualifying Storm Event | pH_Field | 1330499 | |
| Mar 13, 2025 | pH | 7.1 | SU | Effluent | Qualifying Storm Event | pH_Field | 1330499 | |
| Mar 13, 2025 | Total Suspended Solids (TSS) | 12 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1330499 | |
| Mar 13, 2025 | Total Suspended Solids (TSS) | 14 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1330499 | |
| Mar 13, 2025 | Total Suspended Solids (TSS) | 13 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1330499 | |
| Feb 01, 2024 | Iron, Total | DNQ .11 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1287135 | |
| Feb 01, 2024 | Iron, Total | DNQ .09 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1287135 | |
| Feb 01, 2024 | Iron, Total | DNQ .33 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1287135 | |
| Feb 01, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1287135 | |
| Feb 01, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1287135 | |
| Feb 01, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1287135 | |
| Feb 01, 2024 | pH | 7.3 | SU | Effluent | Qualifying Storm Event | pH_Field | 1287135 | |
| Feb 01, 2024 | pH | 7.1 | SU | Effluent | Qualifying Storm Event | pH_Field | 1287135 | |
| Feb 01, 2024 | pH | 7.1 | SU | Effluent | Qualifying Storm Event | pH_Field | 1287135 | |
| Feb 01, 2024 | Total Suspended Solids (TSS) | 18.3 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1287135 | |
| Feb 01, 2024 | Total Suspended Solids (TSS) | 27.3 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1287135 | |
| Feb 01, 2024 | Total Suspended Solids (TSS) | 93.6 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1287135 | |
| Mar 14, 2023 | Iron, Total | 2.7 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1238679 | |
| Mar 14, 2023 | Iron, Total | 2.2 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1238679 | |
| Mar 14, 2023 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1238679 | |
| Mar 14, 2023 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1238679 | |
| Mar 14, 2023 | pH | 7.2 | SU | Effluent | Qualifying Storm Event | pH_Field | 1238679 | |
| Mar 14, 2023 | pH | 7.2 | SU | Effluent | Qualifying Storm Event | pH_Field | 1238679 | |
| Jan 04, 2023 | Iron, Total | .54 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1238676 | |
| Jan 04, 2023 | Iron, Total | .95 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1238676 | |
| Jan 04, 2023 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1238676 | |
| Jan 04, 2023 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1238676 | |
| Jan 04, 2023 | pH | 7.2 | SU | Effluent | Qualifying Storm Event | pH_Field | 1238676 | |
| Jan 04, 2023 | pH | 7.2 | SU | Effluent | Qualifying Storm Event | pH_Field | 1238676 | |
| Jan 04, 2023 | Total Suspended Solids (TSS) | 5.2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1238676 | |
| Jan 04, 2023 | Total Suspended Solids (TSS) | 4.8 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1238676 | |
| Nov 08, 2022 | Iron, Total | 1.69 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1218734 | |
| Nov 08, 2022 | Iron, Total | .908 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1218734 | |
| Nov 08, 2022 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1218734 | |
| Nov 08, 2022 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1218734 |
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 | 11 | 11 Violation · 0 Potential (preliminary) · 0 Dismissed | Jul 02, 1999 – Feb 07, 2023 | Oct 21, 2026 | All violations |
| Enforcement actions | 11 | 10 issued · 0 draft · 1 withdrawn, rescinded or superseded | Aug 24, 2001 – Jun 14, 2023 | Oct 21, 2026 | All actions |
| Inspections | 4 | inspections, not findings | Oct 07, 2002 – Feb 07, 2023 | Oct 21, 2026 | All inspections |
| Annual reports | 10 | certified reports (contents not shown) | 2015 – 2025 | Oct 21, 2026 | All reports |
| Water-quality-based corrective action reports | 1 | reports, by parameter | 2024-25 – 2024-25 | Oct 21, 2026 | All reports |
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 (37 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jul 09, 2026 | Annual reports | 1335637 | Annual report 2025 | — | |
| Jul 07, 2025 | Annual reports | 1294469 | Annual report 2024 | — | |
| Jul 02, 2024 | Annual reports | 1243571 | Annual report 2023 | — | |
| Jul 13, 2023 | Annual reports | 1189591 | Annual report 2022 | — | |
| Jun 14, 2023 | Enforcement actions | 449912 | NOV (Notice of Violation) | Active | |
| Feb 07, 2023 | Inspections | 2059931 | Complaint | Finalized | Follow-up Inspection Needed |
| Feb 07, 2023 | Violations | 885076 | Deficient BMP Implementation | Violation | Inspection |
| Feb 01, 2023 | Enforcement actions | 449331 | NOV (Notice of Violation) | Historical | |
| Feb 01, 2023 | Violations | 884374 | Late Report | Violation | Report |
| Aug 15, 2022 | Annual reports | 1112992 | Annual report 2021 | — | |
| Jul 19, 2021 | Annual reports | 1069013 | Annual report 2020 | — | |
| Sep 03, 2020 | Annual reports | 986296 | Annual report 2019 | — | |
| Nov 06, 2018 | Enforcement actions | 431835 | Verbal Communication | Historical | |
| Nov 06, 2018 | Inspections | 2040433 | B Type compliance | — | No Further Action |
| Nov 06, 2018 | Violations | 868912 | Deficient BMP Implementation | Violation | Inspection |
| Nov 06, 2018 | Violations | 868913 | Incomplete/Insufficient SWPPP | Violation | Inspection |
| Aug 31, 2018 | Annual reports | 939283 | Annual report 2017 | — | |
| Aug 24, 2018 | Enforcement actions | 430286 | 1st NNC - AR (First Notice of Non-Compliance (annual report)) | Historical | |
| Jul 15, 2018 | Violations | 867381 | Late Report | Violation | Report |
| Apr 18, 2018 | Enforcement actions | 429648 | NOV (Notice of Violation) | Historical | |
| Apr 18, 2018 | Violations | 866780 | Incomplete/Insufficient SWPPP | Violation | Report |
| Sep 05, 2017 | Annual reports | 878544 | Annual report 2016 | — | |
| Aug 23, 2016 | Annual reports | 847982 | Annual report 2015 | — | |
| Feb 02, 2016 | Enforcement actions | 422506 | NOV (Notice of Violation) | Historical | |
| Dec 21, 2015 | Enforcement actions | 422366 | 1st NNC - AR (First Notice of Non-Compliance (annual report)) | Historical |
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.