Matrix Service Inc
Terminated WDID 8 30I020967 Orange, 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
- Orange, Orange County
- Region 8 · Santa Ana · Location · Statewide map
- Receiving water
- Santa Ana River (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
- 1 waterbody; 0 on the 2026 303(d) list
- Proximity only; not a discharge pathway · Nearby waterbodies
- Monitoring results Evidence: facility-reported
- 130 distinct results, 6 reporting years (2015 to 2020)
- Most recent sample Jan 29, 2021 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 4 inspections · 9 violation records · 13 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
- 33.80194, -117.85771
- 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
- 500 W Collins Ave, Orange 92867
- Regional Water Board
- 8 — Santa Ana
HUC12 watershed Evidence: spatial
- Walnut Canyon-Santa Ana River HUC12 180702031002
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
- Matrix Service Inc
- Primary industry (SIC)
- 3443-Fabricated Plate Work (Boiler Shops)
- Application ID
- 327321
- NOI processed
- Jun 30, 2007
- Termination effective
- Sep 15, 2025
- Last certified
- Aug 22, 2025
- Facility size
- 4.58 Acres
- Impervious area
- 85 %
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 327321 | Industrial | Terminated | Jun 30, 2007 | Sep 15, 2025 | Aug 22, 2025 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Santa Ana River
- 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
6 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.
| Waterbody (2026 Integrated Report) | Distance | 2026 303(d) list | Appendix A decisions |
|---|---|---|---|
| Collins Channel CAR8011100020251002056453 | 832 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.
130 distinct measurements across 8 parameters, most recent sample Jan 29, 2021.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2020 | 7 | 7 | 0 | Jan 29, 2021 | Jan 29, 2021 |
| 2019 | 20 | 8 | 0 | Dec 03, 2019 | Mar 19, 2020 |
| 2018 | 26 | 7 | 0 | Nov 29, 2018 | Feb 14, 2019 |
| 2017 | 7 | 7 | 0 | Jan 08, 2018 | Jan 08, 2018 |
| 2016 | 28 | 7 | 0 | Dec 30, 2016 | Feb 27, 2017 |
| 2015 | 42 | 7 | 0 | Sep 15, 2015 | Jan 05, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Iron, Total | mg/L | 19 | 1 | Sep 15, 2015 | Jan 29, 2021 | Results |
| Oil and Grease | mg/L | 19 | 17 | Sep 15, 2015 | Jan 29, 2021 | Results |
| pH | SU | 19 | 0 | Sep 15, 2015 | Jan 29, 2021 | Results |
| Total Suspended Solids (TSS) | mg/L | 19 | 6 | Sep 15, 2015 | Jan 29, 2021 | Results |
| Zinc, Total | mg/L | 19 | 0 | Sep 15, 2015 | Jan 29, 2021 | Results |
| Aluminum, Total | mg/L | 18 | 3 | Sep 15, 2015 | Jan 29, 2021 | Results |
| Nitrite Plus Nitrate (as N) | mg/L | 16 | 0 | Sep 15, 2015 | Jan 29, 2021 | Results |
| Copper, Total | mg/L | 1 | 1 | Dec 03, 2019 | Dec 03, 2019 | Results |
All results (130 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Jan 29, 2021 | Aluminum, Total | .488 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1150352 | |
| Jan 29, 2021 | Iron, Total | .781 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1150352 | |
| Jan 29, 2021 | Nitrite Plus Nitrate (as N) | 1.07 | mg/L | Effluent | Qualifying Storm Event | A4500NE | 1150352 | |
| Jan 29, 2021 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1150352 | |
| Jan 29, 2021 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1150352 | |
| Jan 29, 2021 | Total Suspended Solids (TSS) | 23 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1150352 | |
| Jan 29, 2021 | Zinc, Total | .22 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1150352 | |
| Mar 19, 2020 | Aluminum, Total | .226 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1110235 | |
| Mar 19, 2020 | Iron, Total | .624 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1110235 | |
| Mar 19, 2020 | Nitrite Plus Nitrate (as N) | 1.59 | mg/L | Effluent | Qualifying Storm Event | A4500NE | 1110235 | |
| Mar 19, 2020 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1110235 | |
| Mar 19, 2020 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1110235 | |
| Mar 19, 2020 | Total Suspended Solids (TSS) | 5 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1110235 | |
| Mar 19, 2020 | Zinc, Total | .195 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1110235 | |
| Mar 12, 2020 | Aluminum, Total | .216 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1110234 | |
| Mar 12, 2020 | Iron, Total | .573 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1110234 | |
| Mar 12, 2020 | Nitrite Plus Nitrate (as N) | .593 | mg/L | Effluent | Qualifying Storm Event | A4500NE | 1110234 | |
| Mar 12, 2020 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1110234 | |
| Mar 12, 2020 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1110234 | |
| Mar 12, 2020 | Total Suspended Solids (TSS) | 12 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1110234 | |
| Mar 12, 2020 | Zinc, Total | .363 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1110234 | |
| Dec 03, 2019 | Copper, Total | ND | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1097098 | |
| Dec 03, 2019 | Iron, Total | .123 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1097098 | |
| Dec 03, 2019 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1097098 | |
| Dec 03, 2019 | pH | 6.99 | SU | Effluent | Qualifying Storm Event | pH_Field | 1097098 | |
| Dec 03, 2019 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 1097098 | |
| Dec 03, 2019 | Zinc, Total | .018 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1097098 | |
| Feb 14, 2019 | Aluminum, Total | ND | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1043546 | |
| Feb 14, 2019 | Iron, Total | .108 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1043546 | |
| Feb 14, 2019 | Nitrite Plus Nitrate (as N) | 1.01 | mg/L | Effluent | Qualifying Storm Event | A4500NE | 1043546 | |
| Feb 14, 2019 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1043546 | |
| Feb 14, 2019 | pH | 6.54 | SU | Effluent | Qualifying Storm Event | pH_Field | 1043546 | |
| Feb 14, 2019 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 1043546 | |
| Feb 14, 2019 | Zinc, Total | .204 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1043546 | |
| Jan 31, 2019 | Aluminum, Total | ND | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1039817 | |
| Jan 31, 2019 | Iron, Total | .083 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1039817 | |
| Jan 31, 2019 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1039817 | |
| Jan 31, 2019 | pH | 6.5 | SU | Effluent | Qualifying Storm Event | pH_Field | 1039817 | |
| Jan 31, 2019 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 1039817 | |
| Jan 31, 2019 | Zinc, Total | .127 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1039817 | |
| Jan 14, 2019 | Aluminum, Total | ND | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1036405 | |
| Jan 14, 2019 | Iron, Total | ND | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1036405 | |
| Jan 14, 2019 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1036405 | |
| Jan 14, 2019 | pH | 7.1 | SU | Effluent | Qualifying Storm Event | pH_Field | 1036405 | |
| Jan 14, 2019 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 1036405 | |
| Jan 14, 2019 | Zinc, Total | .161 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1036405 | |
| Nov 29, 2018 | Aluminum, Total | .187 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1033033 | |
| Nov 29, 2018 | Iron, Total | .358 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1033033 | |
| Nov 29, 2018 | Nitrite Plus Nitrate (as N) | .725 | mg/L | Effluent | Qualifying Storm Event | A4500NE | 1033033 | |
| Nov 29, 2018 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1033033 |
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 | Aug 31, 2011 – Jul 16, 2023 | Oct 21, 2026 | All violations |
| Enforcement actions | 13 | 13 issued · 0 draft · 0 withdrawn, rescinded or superseded | Aug 31, 2011 – Aug 31, 2023 | Oct 21, 2026 | All actions |
| Inspections | 4 | inspections, not findings | May 23, 2007 – Jan 07, 2026 | Oct 21, 2026 | All inspections |
| Annual reports | 10 | certified reports (contents not shown) | 2015 – 2024 | 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 (36 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jan 07, 2026 | Inspections | 2069903 | NOT | Finalized | No Further Action |
| Apr 18, 2025 | Annual reports | 1296111 | Annual report 2024 | — | |
| Jul 10, 2024 | Annual reports | 1245302 | Annual report 2023 | — | |
| Sep 06, 2023 | Annual reports | 1191404 | Annual report 2022 | — | |
| Aug 31, 2023 | Enforcement actions | 450541 | 2nd NNC - AR (Second Notice of Non-Compliance (annual report)) | Historical | |
| Aug 01, 2023 | Enforcement actions | 450298 | 1st NNC - AR (First Notice of Non-Compliance (annual report)) | Historical | |
| Jul 16, 2023 | Violations | 885511 | Late Report | Violation | Report |
| Jul 06, 2022 | Annual reports | 1114961 | Annual report 2021 | — | |
| Jan 04, 2022 | Enforcement actions | 444659 | SEL (Staff Enforcement Letter) | Historical | |
| Jan 04, 2022 | Violations | 880741 | Late Report | Violation | Report |
| Jun 28, 2021 | Annual reports | 1063050 | Annual report 2020 | — | |
| Feb 01, 2021 | Enforcement actions | 439935 | SEL (Staff Enforcement Letter) | Historical | |
| Feb 01, 2021 | Violations | 876220 | Late Report | Violation | Report |
| Sep 28, 2020 | Annual reports | 979915 | Annual report 2019 | — | |
| Sep 10, 2020 | Enforcement actions | 437385 | 2nd NNC - AR (Second Notice of Non-Compliance (annual report)) | Historical | |
| Aug 12, 2020 | Enforcement actions | 437078 | 1st NNC - AR (First Notice of Non-Compliance (annual report)) | Historical | |
| Jul 16, 2020 | Violations | 873522 | Late Report | Violation | Report |
| Feb 03, 2020 | Enforcement actions | 436076 | SEL (Staff Enforcement Letter) | Historical | |
| Feb 03, 2020 | Violations | 872474 | Late Report | Violation | Report |
| Jul 02, 2019 | Annual reports | 956164 | Annual report 2018 | — | |
| Jul 02, 2018 | Annual reports | 941590 | Annual report 2017 | — | |
| May 30, 2017 | Annual reports | 880982 | Annual report 2016 | — | |
| Jul 13, 2016 | Annual reports | 845793 | Annual report 2015 | — | |
| Aug 29, 2014 | Enforcement actions | 416278 | 2nd NNC - AR (Second Notice of Non-Compliance (annual report)) | Historical | |
| Jul 31, 2014 | Enforcement actions | 416181 | 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.