Interplex Nascal Inc
Terminated WDID 8 30I024653 Tustin, 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
- Tustin, 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; 1 on the 2026 303(d) list
- Proximity only; not a discharge pathway · Nearby waterbodies
- Monitoring results Evidence: facility-reported
- 102 distinct results, 4 reporting years (2015 to 2018)
- Most recent sample Mar 21, 2019 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 1 inspection · 3 violation records · 3 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
- 33.71052, -117.80538
- 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
- 2961 Dow Avenue, Tustin 92780
- Regional Water Board
- 8 — Santa Ana
HUC12 watershed Evidence: spatial
- Peters Canyon Wash HUC12 180702040101
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
- Interplex Industries Inc
- Primary industry (SIC)
- 3469-Metal Stamping, NEC
- Application ID
- 443998
- NOI processed
- Jan 24, 2014
- Termination effective
- Feb 07, 2020
- Last certified
- Dec 03, 2015
- Facility size
- 73102 SqFt
- Impervious area
- 100 %
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 443998 | Industrial | Terminated | Jan 24, 2014 | Feb 07, 2020 | Dec 03, 2015 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Peters Canyon Channel
- 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 |
|---|---|---|---|
| Peters Canyon Wash (Orange County) CAR8011100020050602204221 | 462 m | listed | 9 |
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.
102 distinct measurements across 11 parameters, most recent sample Mar 21, 2019.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2018 | 22 | 8 | 0 | Nov 29, 2018 | Mar 21, 2019 |
| 2017 | 18 | 10 | 0 | Jan 08, 2018 | Mar 22, 2018 |
| 2016 | 38 | 10 | 0 | Nov 21, 2016 | Feb 17, 2017 |
| 2015 | 24 | 6 | 0 | Sep 09, 2015 | Mar 07, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Aluminum, Total | mg/L | 14 | 0 | Sep 09, 2015 | Mar 21, 2019 | Results |
| Oil and Grease | mg/L | 14 | 5 | Sep 09, 2015 | Mar 21, 2019 | Results |
| pH | SU | 14 | 0 | Sep 09, 2015 | Mar 21, 2019 | Results |
| Total Suspended Solids (TSS) | mg/L | 14 | 1 | Sep 09, 2015 | Mar 21, 2019 | Results |
| Zinc, Total | mg/L | 14 | 0 | Sep 09, 2015 | Mar 21, 2019 | Results |
| Copper, Total | mg/L | 10 | 0 | Nov 21, 2016 | Mar 21, 2019 | Results |
| Iron, Total | mg/L | 7 | 0 | Jan 05, 2017 | Jan 14, 2019 | Results |
| Nitrite Plus Nitrate (as N) | mg/L | 7 | 1 | Jan 05, 2017 | Jan 14, 2019 | Results |
| Electrical Conductivity @ 25 Deg. C | umhos/cm | 4 | 0 | Sep 09, 2015 | Mar 07, 2016 | Results |
| Nitrate, Total (as N) | mg/L | 2 | 0 | Feb 17, 2017 | Jan 08, 2018 | Results |
| Nitrite, Total (as N) | mg/L | 2 | 2 | Feb 17, 2017 | Jan 08, 2018 | Results |
All results (102 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Mar 21, 2019 | Aluminum, Total | .46 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1054033 | |
| Mar 21, 2019 | Copper, Total | .038 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1054033 | |
| Mar 21, 2019 | Oil and Grease | 5.9 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1054033 | |
| Mar 21, 2019 | pH | 6.6 | SU | Effluent | Qualifying Storm Event | A4500HB | 1054033 | |
| Mar 21, 2019 | Total Suspended Solids (TSS) | 16 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1054033 | |
| Mar 21, 2019 | Zinc, Total | .34 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1054033 | |
| Jan 14, 2019 | Aluminum, Total | .085 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1039468 | |
| Jan 14, 2019 | Copper, Total | .0097 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1039468 | |
| Jan 14, 2019 | Iron, Total | .00014 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1039468 | |
| Jan 14, 2019 | Nitrite Plus Nitrate (as N) | .44 | mg/L | Effluent | Qualifying Storm Event | E353.2 | 1039468 | |
| Jan 14, 2019 | Oil and Grease | < 5 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1039468 | |
| Jan 14, 2019 | pH | 4.8 | SU | Effluent | Qualifying Storm Event | A4500HB | 1039468 | |
| Jan 14, 2019 | Total Suspended Solids (TSS) | < 4.1 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1039468 | |
| Jan 14, 2019 | Zinc, Total | .054 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1039468 | |
| Nov 29, 2018 | Aluminum, Total | .5 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1034190 | |
| Nov 29, 2018 | Copper, Total | .046 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1034190 | |
| Nov 29, 2018 | Iron, Total | .43 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1034190 | |
| Nov 29, 2018 | Nitrite Plus Nitrate (as N) | 1.1 | mg/L | Effluent | Qualifying Storm Event | E353.2 | 1034190 | |
| Nov 29, 2018 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1034190 | |
| Nov 29, 2018 | pH | 4.9 | SU | Effluent | Qualifying Storm Event | A4500HB | 1034190 | |
| Nov 29, 2018 | Total Suspended Solids (TSS) | 24 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1034190 | |
| Nov 29, 2018 | Zinc, Total | .38 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1034190 | |
| Mar 22, 2018 | Aluminum, Total | .11 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 997677 | |
| Mar 22, 2018 | Copper, Total | .0083 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 997677 | |
| Mar 22, 2018 | Iron, Total | .1 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 997677 | |
| Mar 22, 2018 | Nitrite Plus Nitrate (as N) | .35 | mg/L | Effluent | Qualifying Storm Event | E353.2 | 997677 | |
| Mar 22, 2018 | Oil and Grease | 5 | mg/L | Effluent | Qualifying Storm Event | E1664A | 997677 | |
| Mar 22, 2018 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 997677 | |
| Mar 22, 2018 | Total Suspended Solids (TSS) | 17 | mg/L | Effluent | Qualifying Storm Event | A2540D | 997677 | |
| Mar 22, 2018 | Zinc, Total | .055 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 997677 | |
| Jan 08, 2018 | Aluminum, Total | 1.1 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 992387 | |
| Jan 08, 2018 | Copper, Total | .12 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 992387 | |
| Jan 08, 2018 | Iron, Total | 1.7 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 992387 | |
| Jan 08, 2018 | Nitrate, Total (as N) | 1.2 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 992387 | |
| Jan 08, 2018 | Nitrite Plus Nitrate (as N) | 1.2 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 992387 | |
| Jan 08, 2018 | Nitrite, Total (as N) | ND | mg/L | Effluent | Qualifying Storm Event | E300.0 | 992387 | |
| Jan 08, 2018 | Oil and Grease | 4 | mg/L | Effluent | Qualifying Storm Event | E1664A | 992387 | |
| Jan 08, 2018 | pH | 6.7 | SU | Effluent | Qualifying Storm Event | pH_Field | 992387 | |
| Jan 08, 2018 | Total Suspended Solids (TSS) | 47 | mg/L | Effluent | Qualifying Storm Event | A2540D | 992387 | |
| Jan 08, 2018 | Zinc, Total | .43 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 992387 | |
| Feb 17, 2017 | Aluminum, Total | .17 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 928450 | |
| Feb 17, 2017 | Copper, Total | .011 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 928450 | |
| Feb 17, 2017 | Iron, Total | .22 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 928450 | |
| Feb 17, 2017 | Nitrate, Total (as N) | .84 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 928450 | |
| Feb 17, 2017 | Nitrite Plus Nitrate (as N) | .84 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 928450 | |
| Feb 17, 2017 | Nitrite, Total (as N) | ND | mg/L | Effluent | Qualifying Storm Event | A4500NOB | 928450 | |
| Feb 17, 2017 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 928450 | |
| Feb 17, 2017 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 928450 | |
| Feb 17, 2017 | Total Suspended Solids (TSS) | 13 | mg/L | Effluent | Qualifying Storm Event | A2540D | 928450 | |
| Feb 17, 2017 | Zinc, Total | .13 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 928450 |
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 | 3 | 3 Violation · 0 Potential (preliminary) · 0 Dismissed | Jul 02, 2014 – Feb 03, 2020 | Oct 21, 2026 | All violations |
| Enforcement actions | 3 | 3 issued · 0 draft · 0 withdrawn, rescinded or superseded | Jul 31, 2014 – Feb 03, 2020 | Oct 21, 2026 | All actions |
| Inspections | 1 | inspections, not findings | Feb 12, 2020 – Feb 12, 2020 | Oct 21, 2026 | All inspections |
| Annual reports | 5 | certified reports (contents not shown) | 2015 – 2019 | 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 (12 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Feb 12, 2020 | Inspections | 2046348 | NOT | — | No Further Action |
| Feb 07, 2020 | Annual reports | 981509 | Annual report 2019 | — | |
| Feb 03, 2020 | Enforcement actions | 436082 | SEL (Staff Enforcement Letter) | Historical | |
| Feb 03, 2020 | Enforcement actions | 436088 | SEL (Staff Enforcement Letter) | Historical | |
| Feb 03, 2020 | Violations | 872480 | Late Report | Violation | Report |
| Feb 03, 2020 | Violations | 872486 | Late Report | Violation | Report |
| Jul 11, 2019 | Annual reports | 957827 | Annual report 2018 | — | |
| Jun 27, 2018 | Annual reports | 943272 | Annual report 2017 | — | |
| Jun 26, 2017 | Annual reports | 882808 | Annual report 2016 | — | |
| Jul 15, 2016 | Annual reports | 840873 | Annual report 2015 | — | |
| Jul 31, 2014 | Enforcement actions | 416234 | 1st NNC - AR (First Notice of Non-Compliance (annual report)) | Historical | |
| Jul 02, 2014 | Violations | 854647 | Late 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.