El Sobrante Landfill
Active WDID 8 33I000559 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
- Dawson Creek Temescal Wash (as reported by the facility)
- Evidence: not confirmed 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
- 352 distinct results, 11 reporting years (2015 to 2025)
- Most recent sample Feb 20, 2026 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 0 inspections · 1 violation record · 1 enforcement action
- 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
- 33.78346, -117.46483
- 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
- 10910 Dawson Canyon Rd, Corona 92883
- Regional Water Board
- 8 — Santa Ana
HUC12 watershed Evidence: spatial
- Dawson Canyon-Temescal Wash HUC12 180702030602
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
- USA Waste of California Inc
- Primary industry (SIC)
- 4953-Refuse Systems
- Application ID
- 210663
- NOI processed
- Mar 16, 1992
- Last certified
- Mar 24, 2022
- Facility size
- 1400 Acres
- Impervious area
- 50 %
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 210663 | Industrial | Active | Mar 16, 1992 | — | Mar 24, 2022 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Dawson Creek Temescal Wash
- 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 |
|---|---|---|---|
| Temescal Creek, Reach 2 (1400 ft. upstream of Magnolia Ave. to Lee Lake) CAR8012500020081204202614 | 886 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.
352 distinct measurements across 5 parameters, most recent sample Feb 20, 2026.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2025 | 20 | 4 | 0 | Dec 31, 2025 | Feb 20, 2026 |
| 2024 | 8 | 4 | 0 | Feb 14, 2025 | Mar 13, 2025 |
| 2023 | 8 | 4 | 0 | Feb 01, 2024 | Feb 06, 2024 |
| 2022 | 20 | 4 | 0 | Dec 12, 2022 | Mar 15, 2023 |
| 2021 | 16 | 4 | 0 | Dec 14, 2021 | Dec 30, 2021 |
| 2020 | 8 | 4 | 0 | Jan 29, 2021 | Jan 29, 2021 |
| 2019 | 44 | 4 | 0 | Nov 27, 2019 | Apr 06, 2020 |
| 2018 | 80 | 5 | 0 | Nov 29, 2018 | Feb 14, 2019 |
| 2017 | 28 | 4 | 0 | Jan 09, 2018 | Mar 22, 2018 |
| 2016 | 88 | 5 | 0 | Dec 16, 2016 | Feb 06, 2017 |
| 2015 | 32 | 4 | 0 | Sep 15, 2015 | Jan 06, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Oil and Grease | mg/L | 88 | 78 | Sep 15, 2015 | Feb 20, 2026 | Results |
| pH | SU | 88 | 0 | Sep 15, 2015 | Feb 20, 2026 | Results |
| Total Suspended Solids (TSS) | mg/L | 88 | 1 | Sep 15, 2015 | Feb 20, 2026 | Results |
| Iron, Total | mg/L | 59 | 0 | Sep 15, 2015 | Feb 20, 2026 | Results |
| Iron, Total Recoverable | mg/L | 15 | 0 | Jan 19, 2017 | Mar 22, 2018 | Results |
| Iron, Total Recoverable | ug/L | 14 | 0 | Jan 14, 2019 | Feb 14, 2019 | Results |
All results (352 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Feb 20, 2026 | Iron, Total | .2 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1369241 | |
| Feb 20, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1369241 | |
| Feb 20, 2026 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1369241 | |
| Feb 20, 2026 | Total Suspended Solids (TSS) | DNQ 3.2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1369241 | |
| Feb 12, 2026 | Iron, Total | .9 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1369235 | |
| Feb 12, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1369235 | |
| Feb 12, 2026 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1369235 | |
| Feb 12, 2026 | Total Suspended Solids (TSS) | 110 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1369235 | |
| Jan 13, 2026 | Iron, Total | .61 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1364950 | |
| Jan 13, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1364950 | |
| Jan 13, 2026 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1364950 | |
| Jan 13, 2026 | Total Suspended Solids (TSS) | 6.4 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1364950 | |
| Jan 02, 2026 | Iron, Total | .52 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1364949 | |
| Jan 02, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1364949 | |
| Jan 02, 2026 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1364949 | |
| Jan 02, 2026 | Total Suspended Solids (TSS) | 4 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1364949 | |
| Dec 31, 2025 | Iron, Total | .79 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1364948 | |
| Dec 31, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1364948 | |
| Dec 31, 2025 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1364948 | |
| Dec 31, 2025 | Total Suspended Solids (TSS) | 14 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1364948 | |
| Mar 13, 2025 | Iron, Total | 5 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1327233 | |
| Mar 13, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1327233 | |
| Mar 13, 2025 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1327233 | |
| Mar 13, 2025 | Total Suspended Solids (TSS) | 68 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1327233 | |
| Feb 14, 2025 | Iron, Total | 2.8 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1324531 | |
| Feb 14, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1324531 | |
| Feb 14, 2025 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1324531 | |
| Feb 14, 2025 | Total Suspended Solids (TSS) | 48 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1324531 | |
| Feb 06, 2024 | Iron, Total | 3.1 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1277225 | |
| Feb 06, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1277225 | |
| Feb 06, 2024 | pH | 6.5 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1277225 | |
| Feb 06, 2024 | Total Suspended Solids (TSS) | 29 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1277225 | |
| Feb 01, 2024 | Iron, Total | 1.3 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1277220 | |
| Feb 01, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1277220 | |
| Feb 01, 2024 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1277220 | |
| Feb 01, 2024 | Total Suspended Solids (TSS) | 19 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1277220 | |
| Mar 15, 2023 | Iron, Total | 3.9 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1235164 | |
| Mar 15, 2023 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1235164 | |
| Mar 15, 2023 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1235164 | |
| Mar 15, 2023 | Total Suspended Solids (TSS) | 34 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1235164 | |
| Feb 24, 2023 | Iron, Total | .36 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1229870 | |
| Feb 24, 2023 | Iron, Total | .85 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1229870 | |
| Feb 24, 2023 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1229870 | |
| Feb 24, 2023 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1229870 | |
| Feb 24, 2023 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1229870 | |
| Feb 24, 2023 | pH | 6.5 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1229870 | |
| Feb 24, 2023 | Total Suspended Solids (TSS) | 2.8 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1229870 | |
| Feb 24, 2023 | Total Suspended Solids (TSS) | 7.6 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1229870 | |
| Jan 30, 2023 | Iron, Total | .088 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1226221 | |
| Jan 30, 2023 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1226221 |
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 | 1 | 1 Violation · 0 Potential (preliminary) · 0 Dismissed | Jul 01, 2013 – Jul 01, 2013 | Oct 21, 2026 | All violations |
| Enforcement actions | 1 | 1 issued · 0 draft · 0 withdrawn, rescinded or superseded | Jul 31, 2013 – Jul 31, 2013 | Oct 21, 2026 | All actions |
| Inspections | 0 | inspections, not findings | — | Oct 21, 2026 | |
| Annual reports | 10 | 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 (12 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jul 13, 2026 | Annual reports | 1335621 | Annual report 2025 | — | |
| Jul 15, 2025 | Annual reports | 1294452 | Annual report 2024 | — | |
| Jul 10, 2024 | Annual reports | 1243553 | Annual report 2023 | — | |
| Jul 13, 2023 | Annual reports | 1189573 | Annual report 2022 | — | |
| Jul 05, 2021 | Annual reports | 1068993 | Annual report 2020 | — | |
| Jul 13, 2020 | Annual reports | 986276 | Annual report 2019 | — | |
| Jul 12, 2019 | Annual reports | 953845 | Annual report 2018 | — | |
| Jul 12, 2018 | Annual reports | 939263 | Annual report 2017 | — | |
| Jul 12, 2017 | Annual reports | 878523 | Annual report 2016 | — | |
| Jun 28, 2016 | Annual reports | 841891 | Annual report 2015 | — | |
| Jul 31, 2013 | Enforcement actions | 413250 | 1st NNC - AR (First Notice of Non-Compliance (annual report)) | Historical | |
| Jul 01, 2013 | Violations | 852166 | 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.