Chowchilla Union High School
Active WDID 5F20I018033 Chowchilla, Madera County Region 5F · Central Valley (Fresno)
At a glance
- Permit Evidence: SMARTS record
- Active Industrial
- Notice of Intent (WDID code I) · Permits and applications
- Location Evidence: facility-reported
- Chowchilla, Madera County
- Region 5F · Central Valley (Fresno) · Location · Statewide map
- Receiving water
- Berenda Slough (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
- None
- Monitoring results Evidence: facility-reported
- 51 distinct results, 7 reporting years (2019 to 2025)
- Most recent sample Apr 21, 2026 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 0 inspections · 3 violation records · 9 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
- 37.11647, -120.26269
- 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
- 805 Humboldt Ave, Chowchilla 93610
- Regional Water Board
- 5F — Central Valley (Fresno)
HUC12 watershed Evidence: spatial
- Ash Slough-Fresno River HUC12 180400070505
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
- Chowchilla Union High School
- Primary industry (SIC)
- 4151-School Buses
- Application ID
- 196440
- NOI processed
- Apr 02, 2003
- Last certified
- Nov 21, 2017
- Facility size
- 93000 SqFt
- Impervious area
- 50 %
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 196440 | Industrial | Active | Apr 02, 2003 | — | Nov 21, 2017 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Berenda Slough
- 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
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.
No 2026 Integrated Report waterbody lies within the proximity threshold of the reported location.
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.
51 distinct measurements across 3 parameters, most recent sample Apr 21, 2026.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2025 | 9 | 3 | 0 | Nov 14, 2025 | Apr 21, 2026 |
| 2024 | 10 | 3 | 0 | Nov 26, 2024 | Mar 05, 2025 |
| 2023 | 12 | 3 | 0 | Dec 18, 2023 | Mar 12, 2024 |
| 2022 | 9 | 3 | 0 | Dec 27, 2022 | Feb 24, 2023 |
| 2021 | 5 | 3 | 0 | Oct 22, 2021 | Dec 09, 2021 |
| 2020 | 3 | 3 | 0 | Jan 27, 2021 | Jan 27, 2021 |
| 2019 | 3 | 3 | 0 | Mar 16, 2020 | Mar 16, 2020 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Oil and Grease | mg/L | 18 | 9 | Mar 16, 2020 | Apr 21, 2026 | Results |
| pH | SU | 18 | 0 | Mar 16, 2020 | Apr 21, 2026 | Results |
| Total Suspended Solids (TSS) | mg/L | 15 | 3 | Mar 16, 2020 | Apr 21, 2026 | Results |
All results (51 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Apr 21, 2026 | Oil and Grease | 1.8 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1372581 | |
| Apr 21, 2026 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1372581 | |
| Apr 21, 2026 | Total Suspended Solids (TSS) | 14 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1372581 | |
| Apr 13, 2026 | Oil and Grease | 2.7 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1371899 | |
| Apr 13, 2026 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1371899 | |
| Apr 13, 2026 | Total Suspended Solids (TSS) | 3.7 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1371899 | |
| Nov 14, 2025 | Oil and Grease | 3.8 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1359677 | |
| Nov 14, 2025 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1359677 | |
| Nov 14, 2025 | Total Suspended Solids (TSS) | 4.2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1359677 | |
| Mar 05, 2025 | Oil and Grease | 1.7 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1327426 | |
| Mar 05, 2025 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1327426 | |
| Feb 06, 2025 | Oil and Grease | ND 1.4 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1324283 | |
| Feb 06, 2025 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1324283 | |
| Feb 06, 2025 | Total Suspended Solids (TSS) | 25 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1324283 | |
| Dec 12, 2024 | Oil and Grease | ND 1.7 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1318355 | |
| Dec 12, 2024 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1318355 | |
| Dec 12, 2024 | Total Suspended Solids (TSS) | 2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1318355 | |
| Nov 26, 2024 | Oil and Grease | 2.9 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1317292 | |
| Nov 26, 2024 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1317292 | |
| Mar 12, 2024 | Oil and Grease | ND 1.7 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1283369 | |
| Mar 12, 2024 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1283369 | |
| Mar 12, 2024 | Total Suspended Solids (TSS) | 2.3 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1283369 | |
| Mar 01, 2024 | Oil and Grease | 2.3 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1283726 | |
| Mar 01, 2024 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1283726 | |
| Mar 01, 2024 | Total Suspended Solids (TSS) | 1.3 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1283726 | |
| Jan 22, 2024 | Oil and Grease | 5.6 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1277274 | |
| Jan 22, 2024 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1277274 | |
| Jan 22, 2024 | Total Suspended Solids (TSS) | ND 1 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1277274 | |
| Dec 18, 2023 | Oil and Grease | ND 1.7 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1270942 | |
| Dec 18, 2023 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1270942 | |
| Dec 18, 2023 | Total Suspended Solids (TSS) | 18 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1270942 | |
| Feb 24, 2023 | Oil and Grease | ND 2.8 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1238052 | |
| Feb 24, 2023 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1238052 | |
| Feb 24, 2023 | Total Suspended Solids (TSS) | 2.3 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1238052 | |
| Jan 09, 2023 | Oil and Grease | ND 2.8 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1227355 | |
| Jan 09, 2023 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1227355 | |
| Jan 09, 2023 | Total Suspended Solids (TSS) | ND 1 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1227355 | |
| Dec 27, 2022 | Oil and Grease | 4.2 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1232137 | |
| Dec 27, 2022 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1232137 | |
| Dec 27, 2022 | Total Suspended Solids (TSS) | 1 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1232137 | |
| Dec 09, 2021 | Oil and Grease | ND 2.8 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1174148 | |
| Dec 09, 2021 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1174148 | |
| Dec 09, 2021 | Total Suspended Solids (TSS) | 110 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1174148 | |
| Oct 22, 2021 | Oil and Grease | 4.5 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1169210 | |
| Oct 22, 2021 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1169210 | |
| Jan 27, 2021 | Oil and Grease | ND 1.4 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1143817 | |
| Jan 27, 2021 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1143817 | |
| Jan 27, 2021 | Total Suspended Solids (TSS) | 67 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1143817 | |
| Mar 16, 2020 | Oil and Grease | ND 1.4 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1106104 | |
| Mar 16, 2020 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1106104 |
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, 2008 – Jul 16, 2018 | Oct 21, 2026 | All violations |
| Enforcement actions | 9 | 7 issued · 2 draft · 0 withdrawn, rescinded or superseded | Sep 04, 2008 – Aug 29, 2018 | Oct 21, 2026 | All actions |
| Inspections | 0 | inspections, not findings | — | Oct 21, 2026 | |
| Annual reports | 10 | certified reports (contents not shown) | 2016 – 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 (22 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jul 13, 2026 | Annual reports | 1335138 | Annual report 2025 | — | |
| Jun 30, 2025 | Annual reports | 1293940 | Annual report 2024 | — | |
| Jul 09, 2024 | Annual reports | 1243016 | Annual report 2023 | — | |
| Oct 25, 2023 | Annual reports | 1189008 | Annual report 2022 | — | |
| Jul 19, 2022 | Annual reports | 1112362 | Annual report 2021 | — | |
| Jul 15, 2021 | Annual reports | 1068364 | Annual report 2020 | — | |
| Jun 15, 2020 | Annual reports | 985599 | Annual report 2019 | — | |
| Jul 12, 2019 | Annual reports | 953139 | Annual report 2018 | — | |
| Nov 04, 2018 | Annual reports | 938555 | Annual report 2017 | — | |
| Aug 29, 2018 | Enforcement actions | 430376 | 1st NNC - AR (First Notice of Non-Compliance (annual report)) | Active | |
| Jul 16, 2018 | Violations | 867466 | Late Report | Violation | Report |
| Nov 27, 2017 | Annual reports | 877779 | Annual report 2016 | — | |
| Oct 27, 2017 | Enforcement actions | 428034 | 2nd NNC - AR (Second Notice of Non-Compliance (annual report)) | Historical | |
| Sep 27, 2017 | Enforcement actions | 428033 | 1st NNC - AR (First Notice of Non-Compliance (annual report)) | Historical | |
| Jul 15, 2017 | Violations | 865107 | Late Report | Violation | Report |
| Apr 03, 2012 | Enforcement actions | 408442 | SEL (Staff Enforcement Letter) | Historical | |
| Feb 07, 2011 | Enforcement actions | 404117 | SEL (Staff Enforcement Letter) | Draft | |
| Sep 08, 2010 | Enforcement actions | 405557 | NNC (Notice of Non-Compliance) | Historical | |
| Jun 09, 2009 | Enforcement actions | 366326 | NOV (Notice of Violation) | Draft | |
| Sep 04, 2008 | Enforcement actions | 357105 | NNC (Notice of Non-Compliance) | Historical | |
| Sep 04, 2008 | Enforcement actions | 366163 | SEL (Staff Enforcement Letter) | Historical | |
| Jul 02, 2008 | Violations | 798325 | 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.