Mission Clay Prod
Active WDID 8 33I011264 Corona, Riverside County Region 8 · Santa Ana
At a glance
- Permit Evidence: SMARTS record
- Active Industrial
- Notice of Intent (WDID code I) · Permits and applications
- Location Evidence: facility-reported
- Corona, Riverside County
- Region 8 · Santa Ana · Location · Statewide map
- Receiving water
- Temescal 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
- 2 waterbodies; 0 on the 2026 303(d) list
- Proximity only; not a discharge pathway · Nearby waterbodies
- Monitoring results Evidence: facility-reported
- 491 distinct results, 9 reporting years (2015 to 2023)
- Most recent sample Feb 20, 2024 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 0 inspections · 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
- 33.78098, -117.47838
- 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
- Dawson and Park Canyon, Corona 92883
- Regional Water Board
- 8 — Santa Ana
HUC12 watershed Evidence: spatial
- Bedford Wash-Temescal Wash HUC12 180702030604
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
- Mission Clay Product
- Primary industry (SIC)
- 3251-Brick and Structural Clay Tile
- Application ID
- 210792
- NOI processed
- Nov 08, 1994
- Last certified
- Jun 30, 2015
- Facility size
- 270 Acres
- Impervious area
- 10 %
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 210792 | Industrial | Active | Nov 08, 1994 | — | Jun 30, 2015 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Temescal 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 (3)
- C2 candidate in another or unknown Regional Board
- C3 facility HUC12 not corroborated
- C4 candidate more than 5 km away
1 official waterbody shares 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 |
|---|---|---|---|
| Temescal Creek, Reach 2 (1400 ft. upstream of Magnolia Ave. to Lee Lake) CAR8012500020081204202614 | 75 m | not listed | 0 |
| Coldwater Canyon Creek (Riverside and Orange County) CAR8013100020210407038562 | 398 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.
491 distinct measurements across 10 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 | 40 | 10 | 0 | Jan 03, 2024 | Feb 20, 2024 |
| 2022 | 40 | 10 | 0 | Nov 08, 2022 | May 04, 2023 |
| 2021 | 10 | 10 | 0 | Dec 09, 2021 | Dec 09, 2021 |
| 2020 | 20 | 10 | 0 | Jan 29, 2021 | Jan 29, 2021 |
| 2019 | 78 | 10 | 0 | Dec 04, 2019 | Mar 12, 2020 |
| 2018 | 79 | 10 | 0 | Nov 29, 2018 | Feb 14, 2019 |
| 2017 | 50 | 10 | 0 | Jan 09, 2018 | Mar 22, 2018 |
| 2016 | 80 | 10 | 0 | Dec 16, 2016 | Jan 13, 2017 |
| 2015 | 94 | 9 | 0 | Sep 15, 2015 | Mar 14, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Aluminum, Total | mg/L | 51 | 0 | Sep 15, 2015 | Feb 20, 2024 | Results |
| Chemical Oxygen Demand (COD) | mg/L | 51 | 15 | Sep 15, 2015 | Feb 20, 2024 | Results |
| Copper, Total | mg/L | 51 | 0 | Sep 15, 2015 | Feb 20, 2024 | Results |
| Iron, Total | mg/L | 51 | 0 | Sep 15, 2015 | Feb 20, 2024 | Results |
| Lead, Total | mg/L | 51 | 1 | Sep 15, 2015 | Feb 20, 2024 | Results |
| Total Suspended Solids (TSS) | mg/L | 51 | 0 | Sep 15, 2015 | Feb 20, 2024 | Results |
| Zinc, Total | mg/L | 51 | 0 | Sep 15, 2015 | Feb 20, 2024 | Results |
| Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) | mg/L | 50 | 4 | Sep 15, 2015 | Feb 20, 2024 | Results |
| Oil and Grease | mg/L | 44 | 16 | Sep 15, 2015 | Feb 20, 2024 | Results |
| pH | SU | 40 | 0 | Dec 16, 2016 | Feb 20, 2024 | Results |
All results (491 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Feb 20, 2024 | Aluminum, Total | 2.34 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1279195 | |
| Feb 20, 2024 | Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) | 4.04 | mg/L | Effluent | Qualifying Storm Event | A5210B | 1279195 | |
| Feb 20, 2024 | Chemical Oxygen Demand (COD) | DNQ 48.5 | mg/L | Effluent | Qualifying Storm Event | E410.4 | 1279195 | |
| Feb 20, 2024 | Copper, Total | .00756 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1279195 | |
| Feb 20, 2024 | Iron, Total | 2.77 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1279195 | |
| Feb 20, 2024 | Lead, Total | .00322 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1279195 | |
| Feb 20, 2024 | Oil and Grease | 1.33 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1279195 | |
| Feb 20, 2024 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1279195 | |
| Feb 20, 2024 | Total Suspended Solids (TSS) | 78.2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1279195 | |
| Feb 20, 2024 | Zinc, Total | .175 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1279195 | |
| Feb 05, 2024 | Aluminum, Total | .896 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1275838 | |
| Feb 05, 2024 | Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) | 5.75 | mg/L | Effluent | Qualifying Storm Event | A5210B | 1275838 | |
| Feb 05, 2024 | Chemical Oxygen Demand (COD) | DNQ 25.3 | mg/L | Effluent | Qualifying Storm Event | E410.4 | 1275838 | |
| Feb 05, 2024 | Copper, Total | .00324 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1275838 | |
| Feb 05, 2024 | Iron, Total | 1.04 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1275838 | |
| Feb 05, 2024 | Lead, Total | .00142 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1275838 | |
| Feb 05, 2024 | Oil and Grease | DNQ .704 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1275838 | |
| Feb 05, 2024 | pH | 5.5 | SU | Effluent | Qualifying Storm Event | pH_Field | 1275838 | |
| Feb 05, 2024 | Total Suspended Solids (TSS) | 21.9 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1275838 | |
| Feb 05, 2024 | Zinc, Total | .104 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1275838 | |
| Feb 01, 2024 | Aluminum, Total | 1.45 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1275263 | |
| Feb 01, 2024 | Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) | 6.65 | mg/L | Effluent | Qualifying Storm Event | A5210B | 1275263 | |
| Feb 01, 2024 | Chemical Oxygen Demand (COD) | DNQ 55.5 | mg/L | Effluent | Qualifying Storm Event | E410.4 | 1275263 | |
| Feb 01, 2024 | Copper, Total | .00644 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1275263 | |
| Feb 01, 2024 | Iron, Total | 1.74 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1275263 | |
| Feb 01, 2024 | Lead, Total | .00228 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1275263 | |
| Feb 01, 2024 | Oil and Grease | 1.06 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1275263 | |
| Feb 01, 2024 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1275263 | |
| Feb 01, 2024 | Total Suspended Solids (TSS) | 34.4 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1275263 | |
| Feb 01, 2024 | Zinc, Total | .197 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1275263 | |
| Jan 03, 2024 | Aluminum, Total | 3.05 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1271379 | |
| Jan 03, 2024 | Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) | 9.29 | mg/L | Effluent | Qualifying Storm Event | A5210B | 1271379 | |
| Jan 03, 2024 | Chemical Oxygen Demand (COD) | DNQ 83.4 | mg/L | Effluent | Qualifying Storm Event | E410.4 | 1271379 | |
| Jan 03, 2024 | Copper, Total | .00965 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1271379 | |
| Jan 03, 2024 | Iron, Total | 3.81 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1271379 | |
| Jan 03, 2024 | Lead, Total | .00487 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1271379 | |
| Jan 03, 2024 | Oil and Grease | 2.41 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1271379 | |
| Jan 03, 2024 | pH | 6.2 | SU | Effluent | Qualifying Storm Event | pH_Field | 1271379 | |
| Jan 03, 2024 | Total Suspended Solids (TSS) | 86 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1271379 | |
| Jan 03, 2024 | Zinc, Total | .172 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1271379 | |
| May 04, 2023 | Aluminum, Total | .651 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1237184 | |
| May 04, 2023 | Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) | 71.4 | mg/L | Effluent | Qualifying Storm Event | A5210B | 1237184 | |
| May 04, 2023 | Chemical Oxygen Demand (COD) | 483 | mg/L | Effluent | Qualifying Storm Event | E410.4 | 1237184 | |
| May 04, 2023 | Copper, Total | .0306 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1237184 | |
| May 04, 2023 | Iron, Total | 7.21 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1237184 | |
| May 04, 2023 | Lead, Total | .00932 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1237184 | |
| May 04, 2023 | Oil and Grease | 1.15 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1237184 | |
| May 04, 2023 | pH | 5 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1237184 | |
| May 04, 2023 | Total Suspended Solids (TSS) | 213 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1237184 | |
| May 04, 2023 | Zinc, Total | 1.04 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1237184 |
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, 1999 – Jan 01, 2019 | Oct 21, 2026 | All violations |
| Enforcement actions | 3 | 3 issued · 0 draft · 0 withdrawn, rescinded or superseded | Sep 23, 2015 – Apr 29, 2019 | Oct 21, 2026 | All actions |
| Inspections | 0 | inspections, not findings | — | Oct 21, 2026 | |
| 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 (17 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jul 14, 2026 | Annual reports | 1335583 | Annual report 2025 | — | |
| Jul 10, 2025 | Annual reports | 1294410 | Annual report 2024 | — | |
| Jul 11, 2024 | Annual reports | 1243508 | Annual report 2023 | — | |
| Jun 21, 2023 | Annual reports | 1189523 | Annual report 2022 | — | |
| Jul 08, 2022 | Annual reports | 1112923 | Annual report 2021 | — | |
| Jul 14, 2021 | Annual reports | 1068940 | Annual report 2020 | — | |
| Jul 13, 2020 | Annual reports | 986220 | Annual report 2019 | — | |
| Jul 12, 2019 | Annual reports | 953788 | Annual report 2018 | — | |
| Apr 29, 2019 | Enforcement actions | 433178 | SEL (Staff Enforcement Letter) | Active | |
| Jan 01, 2019 | Violations | 870021 | Late Report | Violation | Report |
| Jul 13, 2018 | Annual reports | 939206 | Annual report 2017 | — | |
| Jul 13, 2017 | Annual reports | 878465 | Annual report 2016 | — | |
| Jul 11, 2016 | Annual reports | 845476 | Annual report 2015 | — | |
| Dec 01, 2015 | Enforcement actions | 422703 | 2nd NNC - AR (Second Notice of Non-Compliance (annual report)) | Historical | |
| Sep 23, 2015 | Enforcement actions | 422702 | 1st NNC - AR (First Notice of Non-Compliance (annual report)) | Historical | |
| Jul 01, 2015 | Violations | 859886 | Late Report | Violation | Report |
| Jul 02, 1999 | Violations | 206768 | Deficient Report | 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.