IMI Critical Engineering
Terminated WDID 9 30I013854 Rancho Santa Margarita, Orange County Region 9 · San Diego
At a glance
- Permit Evidence: SMARTS record
- Terminated Industrial
- Notice of Intent (WDID code I) · Permits and applications
- Location Evidence: facility-reported
- Rancho Santa Margarita, Orange County
- Region 9 · San Diego · Location · Statewide map
- Receiving water
- Arroyo Trabuco 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
- 1 waterbody; 1 on the 2026 303(d) list
- Proximity only; not a discharge pathway · Nearby waterbodies
- Monitoring results Evidence: facility-reported
- 181 distinct results, 8 reporting years (2015 to 2025)
- Most recent sample Oct 14, 2025 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 4 inspections · 21 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
- 33.6342, -117.6072
- Precision
- 4 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
- 22591 Avenida Empresa, Rancho Santa Margarita 92688
- Regional Water Board
- 9 — San Diego
HUC12 watershed Evidence: spatial
- Arroyo Trabuco HUC12 180703010103
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
- Control Components
- Primary industry (SIC)
- 3491-Industrial Valves
- Application ID
- 214874
- NOI processed
- Apr 01, 1998
- Termination effective
- Feb 16, 2026
- Last certified
- Feb 01, 2024
- Facility size
- 8 Acres
- Impervious area
- 100 %
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 214874 | Industrial | Terminated | Apr 01, 1998 | Feb 16, 2026 | Feb 01, 2024 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Arroyo Trabuco Creek
- 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.
| Waterbody (2026 Integrated Report) | Distance | 2026 303(d) list | Appendix A decisions |
|---|---|---|---|
| Arroyo Trabuco Creek, Lower CAR9012300020200716061934 | 810 m | listed | 5 |
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.
181 distinct measurements across 8 parameters, most recent sample Oct 14, 2025.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2025 | 8 | 8 | 0 | Oct 14, 2025 | Oct 14, 2025 |
| 2024 | 8 | 8 | 0 | Feb 13, 2025 | Feb 13, 2025 |
| 2023 | 24 | 8 | 0 | Nov 15, 2023 | Feb 01, 2024 |
| 2022 | 57 | 8 | 0 | Nov 08, 2022 | May 04, 2023 |
| 2018 | 35 | 7 | 0 | Nov 29, 2018 | Mar 21, 2019 |
| 2017 | 21 | 7 | 0 | Jan 08, 2018 | May 02, 2018 |
| 2016 | 21 | 7 | 0 | Dec 21, 2016 | Feb 17, 2017 |
| 2015 | 7 | 7 | 0 | Apr 07, 2016 | Apr 07, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Aluminum, Total | mg/L | 25 | 1 | Apr 07, 2016 | Oct 14, 2025 | Results |
| Iron, Total | mg/L | 25 | 1 | Apr 07, 2016 | Oct 14, 2025 | Results |
| Nitrite Plus Nitrate (as N) | mg/L | 25 | 2 | Apr 07, 2016 | Oct 14, 2025 | Results |
| Oil and Grease | mg/L | 25 | 11 | Apr 07, 2016 | Oct 14, 2025 | Results |
| Total Suspended Solids (TSS) | mg/L | 25 | 3 | Apr 07, 2016 | Oct 14, 2025 | Results |
| Zinc, Total | mg/L | 25 | 0 | Apr 07, 2016 | Oct 14, 2025 | Results |
| pH | SU | 24 | 1 | Apr 07, 2016 | Oct 14, 2025 | Results |
| Chromium (Total) | mg/L | 7 | 0 | Mar 29, 2023 | Oct 14, 2025 | Results |
All results (181 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Oct 14, 2025 | Aluminum, Total | .26 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1356947 | |
| Oct 14, 2025 | Chromium (Total) | .002 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1356947 | |
| Oct 14, 2025 | Iron, Total | .3 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1356947 | |
| Oct 14, 2025 | Nitrite Plus Nitrate (as N) | .28 | mg/L | Effluent | Qualifying Storm Event | E353.2 | 1356947 | |
| Oct 14, 2025 | Oil and Grease | 4.91 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1356947 | |
| Oct 14, 2025 | pH | 7.15 | SU | Effluent | Qualifying Storm Event | pH_Field | 1356947 | |
| Oct 14, 2025 | Total Suspended Solids (TSS) | 38 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1356947 | |
| Oct 14, 2025 | Zinc, Total | .21 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1356947 | |
| Feb 13, 2025 | Aluminum, Total | .16 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1325613 | |
| Feb 13, 2025 | Chromium (Total) | .002 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1325613 | |
| Feb 13, 2025 | Iron, Total | .14 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1325613 | |
| Feb 13, 2025 | Nitrite Plus Nitrate (as N) | .21 | mg/L | Effluent | Qualifying Storm Event | E353.2 | 1325613 | |
| Feb 13, 2025 | Oil and Grease | 3.51 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1325613 | |
| Feb 13, 2025 | pH | 7.7 | SU | Effluent | Qualifying Storm Event | pH_Field | 1325613 | |
| Feb 13, 2025 | Total Suspended Solids (TSS) | 14 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1325613 | |
| Feb 13, 2025 | Zinc, Total | .079 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1325613 | |
| Feb 01, 2024 | Aluminum, Total | .088 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1278375 | |
| Feb 01, 2024 | Chromium (Total) | .018 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1278375 | |
| Feb 01, 2024 | Iron, Total | .28 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1278375 | |
| Feb 01, 2024 | Nitrite Plus Nitrate (as N) | .15 | mg/L | Effluent | Qualifying Storm Event | E353.2 | 1278375 | |
| Feb 01, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1278375 | |
| Feb 01, 2024 | pH | 7.81 | SU | Effluent | Qualifying Storm Event | 1278375 | ||
| Feb 01, 2024 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 1278375 | |
| Feb 01, 2024 | Zinc, Total | .058 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1278375 | |
| Jan 03, 2024 | Aluminum, Total | .16 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1273270 | |
| Jan 03, 2024 | Chromium (Total) | .0009 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1273270 | |
| Jan 03, 2024 | Iron, Total | .29 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1273270 | |
| Jan 03, 2024 | Nitrite Plus Nitrate (as N) | .17 | mg/L | Effluent | Qualifying Storm Event | E353.2 | 1273270 | |
| Jan 03, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1273270 | |
| Jan 03, 2024 | pH | 7.38 | SU | Effluent | Qualifying Storm Event | A4500HB | 1273270 | |
| Jan 03, 2024 | Total Suspended Solids (TSS) | 4 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1273270 | |
| Jan 03, 2024 | Zinc, Total | .054 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1273270 | |
| Nov 15, 2023 | Aluminum, Total | 1.9 | mg/L | Effluent | Qualifying Storm Event | 1269157 | ||
| Nov 15, 2023 | Chromium (Total) | .012 | mg/L | Effluent | Qualifying Storm Event | 1269157 | ||
| Nov 15, 2023 | Iron, Total | 2.8 | mg/L | Effluent | Qualifying Storm Event | 1269157 | ||
| Nov 15, 2023 | Nitrite Plus Nitrate (as N) | .91 | mg/L | Effluent | Qualifying Storm Event | 1269157 | ||
| Nov 15, 2023 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | 1269157 | ||
| Nov 15, 2023 | pH | 7.83 | SU | Effluent | Qualifying Storm Event | 1269157 | ||
| Nov 15, 2023 | Total Suspended Solids (TSS) | 6 | mg/L | Effluent | Qualifying Storm Event | 1269157 | ||
| Nov 15, 2023 | Zinc, Total | 1.5 | mg/L | Effluent | Qualifying Storm Event | 1269157 | ||
| May 04, 2023 | Aluminum, Total | .088 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1236472 | |
| May 04, 2023 | Chromium (Total) | .002 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1236472 | |
| May 04, 2023 | Iron, Total | .092 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1236472 | |
| May 04, 2023 | Nitrite Plus Nitrate (as N) | .25 | mg/L | Effluent | Qualifying Storm Event | E353.2 | 1236472 | |
| May 04, 2023 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1236472 | |
| May 04, 2023 | pH | 7.03 | SU | Effluent | Qualifying Storm Event | A4500HB | 1236472 | |
| May 04, 2023 | Total Suspended Solids (TSS) | 2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1236472 | |
| May 04, 2023 | Zinc, Total | .029 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1236472 | |
| Mar 29, 2023 | Aluminum, Total | .74 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1234045 | |
| Mar 29, 2023 | Chromium (Total) | .005 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1234045 |
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 | 21 | 16 Violation · 0 Potential (preliminary) · 5 Dismissed | Jan 10, 2002 – Sep 07, 2017 | Oct 21, 2026 | All violations |
| Enforcement actions | 4 | 4 issued · 0 draft · 0 withdrawn, rescinded or superseded | Feb 10, 2002 – Oct 30, 2015 | Oct 21, 2026 | All actions |
| Inspections | 4 | inspections, not findings | Oct 04, 2001 – Sep 07, 2017 | 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 (40 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Feb 16, 2026 | Annual reports | 1335704 | Annual report 2025 | — | |
| Jul 15, 2025 | Annual reports | 1294537 | Annual report 2024 | — | |
| Jul 11, 2024 | Annual reports | 1243641 | Annual report 2023 | — | |
| Jul 14, 2023 | Annual reports | 1189665 | Annual report 2022 | — | |
| Dec 22, 2022 | Annual reports | 1113069 | Annual report 2021 | — | |
| Dec 21, 2022 | Annual reports | 1069097 | Annual report 2020 | — | |
| Dec 21, 2022 | Annual reports | 986388 | Annual report 2019 | — | |
| Jul 02, 2019 | Annual reports | 953960 | Annual report 2018 | — | |
| Jul 06, 2018 | Annual reports | 939378 | Annual report 2017 | — | |
| Sep 07, 2017 | Inspections | 2034918 | B Type compliance | — | Additional Info Required |
| Sep 07, 2017 | Violations | 864863 | Deficient Report | Violation | Inspection |
| Sep 07, 2017 | Violations | 864864 | Deficient Report | Violation | Inspection |
| Sep 07, 2017 | Violations | 864865 | Incomplete/Insufficient SWPPP | Dismissed | Inspection |
| Sep 07, 2017 | Violations | 864866 | Incomplete/Insufficient SWPPP | Dismissed | Inspection |
| Sep 07, 2017 | Violations | 864867 | Incomplete/Insufficient SWPPP | Dismissed | Inspection |
| Sep 07, 2017 | Violations | 864868 | Incomplete/Insufficient SWPPP | Dismissed | Inspection |
| Sep 07, 2017 | Violations | 864869 | Incomplete/Insufficient SWPPP | Dismissed | Inspection |
| Sep 07, 2017 | Violations | 864870 | Deficient BMP Implementation | Violation | Inspection |
| Sep 07, 2017 | Violations | 864871 | Deficient BMP Implementation | Violation | Inspection |
| Sep 07, 2017 | Violations | 864872 | Deficient BMP Implementation | Violation | Inspection |
| Sep 07, 2017 | Violations | 864873 | Deficient BMP Implementation | Violation | Inspection |
| Sep 07, 2017 | Violations | 864874 | Deficient BMP Implementation | Violation | Inspection |
| Sep 07, 2017 | Violations | 864875 | Deficient BMP Implementation | Violation | Inspection |
| Sep 07, 2017 | Violations | 864876 | Deficient BMP Implementation | Violation | Inspection |
| Sep 07, 2017 | Violations | 864877 | Deficient BMP Implementation | Violation | Inspection |
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.