San Ysidro Sch Dist
Active WDID 9 37I017905 San Ysidro, San Diego County Region 9 · San Diego
At a glance
- Permit Evidence: SMARTS record
- Active Industrial
- Notice of Intent (WDID code I) · Permits and applications
- Location Evidence: facility-reported
- San Ysidro, San Diego County
- Region 9 · San Diego · Location · Statewide map
- Receiving water
- Tijuana River (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
- 209 distinct results, 9 reporting years (2015 to 2024)
- Most recent sample Mar 13, 2025 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 1 inspection · 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
- 32.560477, -117.040509
- Precision
- 6 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
- 4350 Otay Mesa Rd, San Ysidro 92173
- Regional Water Board
- 9 — San Diego
HUC12 watershed Evidence: spatial
- Tijuana River-Frontal Pacific Ocean HUC12 180703051304
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
- San Ysidro School District
- Primary industry (SIC)
- 4151-School Buses
- Application ID
- 218883
- NOI processed
- Mar 11, 2003
- Last certified
- Jan 18, 2019
- Facility size
- 4.2 Acres
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 218883 | Industrial | Active | Mar 11, 2003 | — | Jan 18, 2019 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Tijuana River
- Discharges directly / indirectly
- N / 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)
- C3 facility HUC12 not corroborated (complete published list)
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.
209 distinct measurements across 12 parameters, most recent sample Mar 13, 2025.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2024 | 7 | 7 | 0 | Mar 13, 2025 | Mar 13, 2025 |
| 2023 | 7 | 7 | 0 | Feb 01, 2024 | Feb 01, 2024 |
| 2022 | 10 | 10 | 0 | Nov 08, 2022 | Nov 08, 2022 |
| 2021 | 22 | 12 | 0 | Dec 09, 2021 | Feb 22, 2022 |
| 2019 | 43 | 12 | 0 | Nov 20, 2019 | Mar 12, 2020 |
| 2018 | 33 | 11 | 0 | Nov 29, 2018 | Feb 14, 2019 |
| 2017 | 10 | 10 | 0 | Jan 09, 2018 | Jan 09, 2018 |
| 2016 | 33 | 11 | 0 | Dec 16, 2016 | Feb 27, 2017 |
| 2015 | 44 | 12 | 0 | Sep 15, 2015 | Apr 07, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Cadmium, Total | mg/L | 20 | 14 | Sep 15, 2015 | Mar 13, 2025 | Results |
| Copper, Total | mg/L | 20 | 5 | Sep 15, 2015 | Mar 13, 2025 | Results |
| pH | SU | 20 | 0 | Sep 15, 2015 | Mar 13, 2025 | Results |
| Total Suspended Solids (TSS) | mg/L | 20 | 11 | Sep 15, 2015 | Mar 13, 2025 | Results |
| Oil and Grease | mg/L | 19 | 19 | Sep 15, 2015 | Mar 13, 2025 | Results |
| Zinc, Total | mg/L | 19 | 0 | Sep 15, 2015 | Mar 13, 2025 | Results |
| Lead, Total | mg/L | 18 | 9 | Sep 15, 2015 | Nov 08, 2022 | Results |
| Methylene Blue Active Substances (MBAS) | mg/L | 18 | 15 | Sep 15, 2015 | Nov 08, 2022 | Results |
| Nickel, Total | mg/L | 18 | 14 | Sep 15, 2015 | Nov 08, 2022 | Results |
| Gasoline | mg/L | 17 | 17 | Sep 15, 2015 | Nov 08, 2022 | Results |
| Diesel Oil | mg/L | 14 | 10 | Mar 07, 2016 | Mar 13, 2025 | Results |
| Petroleum Hydrocarbons, Total | mg/L | 6 | 4 | Sep 15, 2015 | Feb 22, 2022 | Results |
All results (209 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Mar 13, 2025 | Cadmium, Total | ND | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1329710 | |
| Mar 13, 2025 | Copper, Total | .013 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1329710 | |
| Mar 13, 2025 | Diesel Oil | .27 | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1329710 | |
| Mar 13, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1329710 | |
| Mar 13, 2025 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1329710 | |
| Mar 13, 2025 | Total Suspended Solids (TSS) | 48 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1329710 | |
| Mar 13, 2025 | Zinc, Total | .082 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1329710 | |
| Feb 01, 2024 | Cadmium, Total | ND | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1281624 | |
| Feb 01, 2024 | Copper, Total | .002 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1281624 | |
| Feb 01, 2024 | Diesel Oil | .1 | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1281624 | |
| Feb 01, 2024 | Oil and Grease | DNQ 1.6 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1281624 | |
| Feb 01, 2024 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1281624 | |
| Feb 01, 2024 | Total Suspended Solids (TSS) | 150 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1281624 | |
| Feb 01, 2024 | Zinc, Total | .049 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1281624 | |
| Nov 08, 2022 | Cadmium, Total | .00041 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1227237 | |
| Nov 08, 2022 | Copper, Total | .019 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1227237 | |
| Nov 08, 2022 | Diesel Oil | 1.1 | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1227237 | |
| Nov 08, 2022 | Gasoline | ND | mg/L | Effluent | Qualifying Storm Event | SW8260B | 1227237 | |
| Nov 08, 2022 | Lead, Total | .003 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1227237 | |
| Nov 08, 2022 | Methylene Blue Active Substances (MBAS) | 3.3 | mg/L | Effluent | Qualifying Storm Event | A5540C | 1227237 | |
| Nov 08, 2022 | Nickel, Total | .004 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1227237 | |
| Nov 08, 2022 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1227237 | |
| Nov 08, 2022 | Total Suspended Solids (TSS) | 23 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1227237 | |
| Nov 08, 2022 | Zinc, Total | .18 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1227237 | |
| Feb 22, 2022 | Cadmium, Total | .007 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1179669 | |
| Feb 22, 2022 | Copper, Total | .016 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1179669 | |
| Feb 22, 2022 | Gasoline | ND | mg/L | Effluent | Qualifying Storm Event | SW8260B | 1179669 | |
| Feb 22, 2022 | Lead, Total | .011 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1179669 | |
| Feb 22, 2022 | Methylene Blue Active Substances (MBAS) | DNQ .3 | mg/L | Effluent | Qualifying Storm Event | A5540C | 1179669 | |
| Feb 22, 2022 | Nickel, Total | DNQ .003 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1179669 | |
| Feb 22, 2022 | Oil and Grease | DNQ 1.5 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1179669 | |
| Feb 22, 2022 | Petroleum Hydrocarbons, Total | .32 | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1179669 | |
| Feb 22, 2022 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1179669 | |
| Feb 22, 2022 | Total Suspended Solids (TSS) | 39 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1179669 | |
| Feb 22, 2022 | Zinc, Total | .141 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1179669 | |
| Dec 09, 2021 | Cadmium, Total | DNQ .0005 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1174325 | |
| Dec 09, 2021 | Copper, Total | .027 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1174325 | |
| Dec 09, 2021 | Diesel Oil | ND | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1174325 | |
| Dec 09, 2021 | Gasoline | ND | mg/L | Effluent | Qualifying Storm Event | SW8260B | 1174325 | |
| Dec 09, 2021 | Lead, Total | DNQ .003 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1174325 | |
| Dec 09, 2021 | Methylene Blue Active Substances (MBAS) | .8 | mg/L | Effluent | Qualifying Storm Event | A5540C | 1174325 | |
| Dec 09, 2021 | Nickel, Total | .007 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1174325 | |
| Dec 09, 2021 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1174325 | |
| Dec 09, 2021 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1174325 | |
| Dec 09, 2021 | Total Suspended Solids (TSS) | DNQ 6 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1174325 | |
| Dec 09, 2021 | Zinc, Total | .177 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1174325 | |
| Mar 12, 2020 | Cadmium, Total | DNQ .0005 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1103434 | |
| Mar 12, 2020 | Copper, Total | DNQ .007 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1103434 | |
| Mar 12, 2020 | Gasoline | ND | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1103434 | |
| Mar 12, 2020 | Lead, Total | DNQ .003 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1103434 |
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 | Nov 06, 2007 – Nov 06, 2007 | Oct 21, 2026 | All violations |
| Enforcement actions | 1 | 1 issued · 0 draft · 0 withdrawn, rescinded or superseded | Oct 08, 2008 – Oct 08, 2008 | Oct 21, 2026 | All actions |
| Inspections | 1 | inspections, not findings | Nov 06, 2007 – Nov 06, 2007 | 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 (14 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jun 19, 2026 | Annual reports | 1335120 | Annual report 2025 | — | |
| Jul 08, 2025 | Annual reports | 1293922 | Annual report 2024 | — | |
| Jun 10, 2024 | Annual reports | 1242997 | Annual report 2023 | — | |
| Jul 17, 2023 | Annual reports | 1188988 | Annual report 2022 | — | |
| Jul 15, 2022 | Annual reports | 1112341 | Annual report 2021 | — | |
| Aug 02, 2021 | Annual reports | 1068343 | Annual report 2020 | — | |
| Aug 02, 2021 | Annual reports | 985575 | Annual report 2019 | — | |
| Jul 17, 2019 | Annual reports | 953115 | Annual report 2018 | — | |
| Jul 18, 2018 | Annual reports | 938530 | Annual report 2017 | — | |
| Jul 14, 2017 | Annual reports | 877752 | Annual report 2016 | — | |
| Jul 14, 2016 | Annual reports | 842050 | Annual report 2015 | — | |
| Oct 08, 2008 | Enforcement actions | 353391 | SEL (Staff Enforcement Letter) | Active | |
| Nov 06, 2007 | Inspections | 1493642 | B Type compliance | — | Additional Info Required |
| Nov 06, 2007 | Violations | 788609 | 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.