Metal Improvement Co LLC
Terminated WDID 8 30I014808 Santa Ana, Orange County Region 8 · Santa Ana
At a glance
- Permit Evidence: SMARTS record
- Terminated Industrial
- Notice of Intent (WDID code I) · Permits and applications
- Location Evidence: facility-reported
- Santa Ana, Orange County
- Region 8 · Santa Ana · Location · Statewide map
- 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
- 1 waterbody; 0 on the 2026 303(d) list
- Proximity only; not a discharge pathway · Nearby waterbodies
- Monitoring results Evidence: facility-reported
- 88 distinct results, 9 reporting years (2015 to 2023)
- Most recent sample Feb 20, 2024 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 2 inspections · 9 violation records · 12 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
- 33.71718, -117.85352
- 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
- 2151 S Hathaway St, Santa Ana 92705
- Regional Water Board
- 8 — Santa Ana
HUC12 watershed Evidence: spatial
- Lower San Diego Creek HUC12 180702040103
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
- Metal Improvement Co LLC
- Primary industry (SIC)
- 3398-Metal Heat Treating
- Application ID
- 208949
- NOI processed
- Dec 07, 1998
- Termination effective
- Sep 05, 2024
- Last certified
- Mar 23, 2017
- Facility size
- 7024 SqFt
- Impervious area
- 5 %
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 208949 | Industrial | Terminated | Dec 07, 1998 | Sep 05, 2024 | Mar 23, 2017 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Upper Newport Bay
- Discharges directly / indirectly
- N / Y (as answered in the permit application)
Evidence: not confirmed Not matchable to a single waterbody
Receiving-water text as reported by the discharger in SMARTS; no waterbody identification has been confirmed.
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 |
|---|---|---|---|
| Lane Channel (Orange County) CAR8011100020210408049468 | 716 m | not listed | 0 |
Waterbodies within 1.0 km of the reported facility location. Method proximity/1.
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 |
|---|---|---|---|---|---|---|---|
| San Diego Creek and Newport Bay Toxics TMDL | San Diego Creek Watershed | Cadmium, Total | .0097 mg/L | NEL instantaneous | FINAL | 2020-07-01 | Y |
| San Diego Creek and Newport Bay Toxics TMDL | San Diego Creek Watershed | Copper, Total | .027 mg/L | NEL instantaneous | FINAL | 2020-07-01 | Y |
| San Diego Creek and Newport Bay Toxics TMDL | San Diego Creek Watershed | Lead, Total | .194 mg/L | NEL instantaneous | FINAL | 2020-07-01 | Y |
| San Diego Creek and Newport Bay Toxics TMDL | San Diego Creek Watershed | Zinc, Total | .21 mg/L | NEL instantaneous | FINAL | 2020-07-01 | Y |
4 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.
88 distinct measurements across 7 parameters, most recent sample Feb 20, 2024.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2023 | 28 | 7 | 0 | Nov 16, 2023 | Feb 20, 2024 |
| 2022 | 9 | 3 | 0 | Oct 12, 2022 | Jan 05, 2023 |
| 2021 | 9 | 3 | 0 | Dec 14, 2021 | Mar 28, 2022 |
| 2020 | 3 | 3 | 0 | Jan 29, 2021 | Jan 29, 2021 |
| 2019 | 6 | 3 | 0 | Dec 04, 2019 | Mar 12, 2020 |
| 2018 | 12 | 3 | 0 | Nov 29, 2018 | Feb 14, 2019 |
| 2017 | 6 | 3 | 0 | Mar 10, 2018 | Mar 22, 2018 |
| 2016 | 9 | 3 | 0 | Oct 17, 2016 | Jan 09, 2017 |
| 2015 | 6 | 3 | 0 | Sep 15, 2015 | Dec 05, 2015 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Oil and Grease | mg/L | 24 | 2 | Sep 15, 2015 | Feb 20, 2024 | Results |
| pH | SU | 24 | 0 | Sep 15, 2015 | Feb 20, 2024 | Results |
| Total Suspended Solids (TSS) | mg/L | 24 | 0 | Sep 15, 2015 | Feb 20, 2024 | Results |
| Cadmium, Total | mg/L | 4 | 0 | Nov 16, 2023 | Feb 20, 2024 | Results |
| Copper, Total | mg/L | 4 | 0 | Nov 16, 2023 | Feb 20, 2024 | Results |
| Lead, Total | mg/L | 4 | 0 | Nov 16, 2023 | Feb 20, 2024 | Results |
| Zinc, Total | mg/L | 4 | 0 | Nov 16, 2023 | Feb 20, 2024 | Results |
All results (88 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Feb 20, 2024 | Cadmium, Total | .0028 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1287107 | |
| Feb 20, 2024 | Copper, Total | .0198 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1287107 | |
| Feb 20, 2024 | Lead, Total | .0144 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1287107 | |
| Feb 20, 2024 | Oil and Grease | 1 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1287107 | |
| Feb 20, 2024 | pH | 6.8 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1287107 | |
| Feb 20, 2024 | Total Suspended Solids (TSS) | 8.3 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1287107 | |
| Feb 20, 2024 | Zinc, Total | .0562 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1287107 | |
| Jan 22, 2024 | Cadmium, Total | .0015 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1287106 | |
| Jan 22, 2024 | Copper, Total | .0113 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1287106 | |
| Jan 22, 2024 | Lead, Total | .001 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1287106 | |
| Jan 22, 2024 | Oil and Grease | 5.4 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1287106 | |
| Jan 22, 2024 | pH | 6.3 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1287106 | |
| Jan 22, 2024 | Total Suspended Solids (TSS) | 15 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1287106 | |
| Jan 22, 2024 | Zinc, Total | .0664 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1287106 | |
| Dec 22, 2023 | Cadmium, Total | .0872 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1287105 | |
| Dec 22, 2023 | Copper, Total | .09 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1287105 | |
| Dec 22, 2023 | Lead, Total | .0881 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1287105 | |
| Dec 22, 2023 | Oil and Grease | 14.5 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1287105 | |
| Dec 22, 2023 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1287105 | |
| Dec 22, 2023 | Total Suspended Solids (TSS) | 75 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1287105 | |
| Dec 22, 2023 | Zinc, Total | .1697 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1287105 | |
| Nov 16, 2023 | Cadmium, Total | .0076 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1287104 | |
| Nov 16, 2023 | Copper, Total | .2676 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1287104 | |
| Nov 16, 2023 | Lead, Total | .0072 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1287104 | |
| Nov 16, 2023 | Oil and Grease | 10.8 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1287104 | |
| Nov 16, 2023 | pH | 6.4 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1287104 | |
| Nov 16, 2023 | Total Suspended Solids (TSS) | 91.5 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1287104 | |
| Nov 16, 2023 | Zinc, Total | .3178 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1287104 | |
| Jan 05, 2023 | Oil and Grease | 10.9 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1253888 | |
| Jan 05, 2023 | pH | 6.5 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1253888 | |
| Jan 05, 2023 | Total Suspended Solids (TSS) | 3 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1253888 | |
| Nov 08, 2022 | Oil and Grease | 10.6 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1253887 | |
| Nov 08, 2022 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1253887 | |
| Nov 08, 2022 | Total Suspended Solids (TSS) | 22 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1253887 | |
| Oct 12, 2022 | Oil and Grease | 2.2 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1253886 | |
| Oct 12, 2022 | pH | 6.5 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1253886 | |
| Oct 12, 2022 | Total Suspended Solids (TSS) | 21 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1253886 | |
| Mar 28, 2022 | Oil and Grease | 17.2 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1186603 | |
| Mar 28, 2022 | pH | 6.5 | SU | Effluent | Qualifying Storm Event | pH_Field | 1186603 | |
| Mar 28, 2022 | Total Suspended Solids (TSS) | 18 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1186603 | |
| Dec 29, 2021 | Oil and Grease | 10.6 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1187054 | |
| Dec 29, 2021 | pH | 6.5 | SU | Effluent | Qualifying Storm Event | pH_Field | 1187054 | |
| Dec 29, 2021 | Total Suspended Solids (TSS) | 13 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1187054 | |
| Dec 14, 2021 | Oil and Grease | 12 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1186602 | |
| Dec 14, 2021 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Field | 1186602 | |
| Dec 14, 2021 | Total Suspended Solids (TSS) | 48 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1186602 | |
| Jan 29, 2021 | Oil and Grease | 4.6 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1154008 | |
| Jan 29, 2021 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Field | 1154008 | |
| Jan 29, 2021 | Total Suspended Solids (TSS) | 82 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1154008 | |
| Mar 12, 2020 | Oil and Grease | 8.2 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1121242 |
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 | 9 | 9 Violation · 0 Potential (preliminary) · 0 Dismissed | Jul 03, 2000 – Jan 17, 2024 | Oct 21, 2026 | All violations |
| Enforcement actions | 12 | 11 issued · 0 draft · 1 withdrawn, rescinded or superseded | Jul 26, 2000 – Apr 09, 2025 | Oct 21, 2026 | All actions |
| Inspections | 2 | inspections, not findings | Aug 20, 2001 – Sep 30, 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 (32 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Apr 09, 2025 | Enforcement actions | 455764 | ACL (Administrative Civil Liability) | Historical | R8-2025-0040 |
| Sep 30, 2024 | Inspections | 2065587 | NOT | Finalized | No Further Action |
| Jun 04, 2024 | Annual reports | 1245587 | Annual report 2023 | — | |
| Jan 17, 2024 | Violations | 891072 | Late Report | Violation | Internal Report |
| Dec 22, 2023 | Violations | 891073 | Effluent | Violation | Internal Report |
| Sep 19, 2023 | Annual reports | 1191702 | Annual report 2022 | — | |
| Aug 31, 2023 | Enforcement actions | 450517 | 2nd NNC - AR (Second Notice of Non-Compliance (annual report)) | Historical | |
| Aug 01, 2023 | Enforcement actions | 450242 | 1st NNC - AR (First Notice of Non-Compliance (annual report)) | Historical | |
| Jul 16, 2023 | Violations | 885455 | Late Report | Violation | Report |
| Jul 07, 2022 | Annual reports | 1115288 | Annual report 2021 | — | |
| Jul 13, 2021 | Annual reports | 1063383 | Annual report 2020 | — | |
| Jul 10, 2020 | Annual reports | 980273 | Annual report 2019 | — | |
| Jul 08, 2019 | Annual reports | 956531 | Annual report 2018 | — | |
| Jul 10, 2018 | Annual reports | 941958 | Annual report 2017 | — | |
| Jul 10, 2017 | Annual reports | 881367 | Annual report 2016 | — | |
| Mar 28, 2017 | Enforcement actions | 425833 | SEL (Staff Enforcement Letter) | Historical | |
| Feb 28, 2017 | Enforcement actions | 425701 | SEL (Staff Enforcement Letter) | Historical | |
| Jan 02, 2017 | Violations | 862651 | Late Report | Violation | Report |
| Sep 09, 2016 | Annual reports | 846378 | Annual report 2015 | — | |
| Aug 30, 2016 | Enforcement actions | 423758 | 2nd NNC - AR (Second Notice of Non-Compliance (annual report)) | Historical | |
| Aug 01, 2016 | Enforcement actions | 423593 | 1st NNC - AR (First Notice of Non-Compliance (annual report)) | Historical | |
| Jul 16, 2016 | Violations | 860757 | Late Report | Violation | Report |
| Jan 15, 2015 | Enforcement actions | 418237 | SEL (Staff Enforcement Letter) | Historical | |
| Jan 15, 2015 | Violations | 856286 | Deficient Report | Violation | Report |
| Jul 31, 2013 | Enforcement actions | 412734 | 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.