Trans Maintenance Yard
Active WDID 5S39I017999 Tracy, San Joaquin County Region 5S · Central Valley (Sacramento)
At a glance
- Permit Evidence: SMARTS record
- Active Industrial
- Notice of Intent (WDID code I) · Permits and applications
- Location Evidence: facility-reported
- Tracy, San Joaquin County
- Region 5S · Central Valley (Sacramento) · 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
- None
- Monitoring results Evidence: facility-reported
- 133 distinct results, 11 reporting years (2015 to 2025)
- Most recent sample May 28, 2026 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 1 inspection · 8 violation records · 11 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
- 37.747143, -121.45227
- 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
- 1975 W Lowell Ave, Tracy 95376
- Regional Water Board
- 5S — Central Valley (Sacramento)
HUC12 watershed Evidence: spatial
- Lower Old River HUC12 180400030605
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
- Tracy Unified School District
- Primary industry (SIC)
- 4151-School Buses
- Application ID
- 201879
- NOI processed
- Mar 19, 2003
- Last certified
- Sep 27, 2022
- Facility size
- 4 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 |
|---|---|---|---|---|---|
| 201879 | Industrial | Active | Mar 19, 2003 | — | Sep 27, 2022 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Tom Paine Slew
- 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.
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.
133 distinct measurements across 4 parameters, most recent sample May 28, 2026.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2025 | 16 | 4 | 0 | Oct 02, 2025 | May 28, 2026 |
| 2024 | 9 | 3 | 0 | Nov 22, 2024 | Feb 13, 2025 |
| 2023 | 8 | 4 | 0 | Feb 07, 2024 | Apr 04, 2024 |
| 2022 | 13 | 4 | 0 | Sep 19, 2022 | Mar 09, 2023 |
| 2021 | 7 | 4 | 0 | Nov 01, 2021 | Dec 13, 2021 |
| 2020 | 8 | 4 | 0 | Jan 27, 2021 | Feb 02, 2021 |
| 2019 | 8 | 4 | 0 | Jan 16, 2020 | Mar 16, 2020 |
| 2018 | 16 | 4 | 0 | Nov 29, 2018 | Feb 08, 2019 |
| 2017 | 16 | 4 | 0 | Nov 16, 2017 | Feb 26, 2018 |
| 2016 | 16 | 4 | 0 | Oct 27, 2016 | Mar 24, 2017 |
| 2015 | 16 | 4 | 0 | Nov 02, 2015 | May 06, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Oil and Grease | mg/L | 35 | 10 | Nov 02, 2015 | May 28, 2026 | Results |
| pH | SU | 35 | 0 | Nov 02, 2015 | May 28, 2026 | Results |
| Total Suspended Solids (TSS) | mg/L | 35 | 0 | Nov 02, 2015 | May 28, 2026 | Results |
| Zinc, Total | mg/L | 28 | 0 | Nov 02, 2015 | May 28, 2026 | Results |
All results (133 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| May 28, 2026 | Oil and Grease | 2.87 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1374593 | |
| May 28, 2026 | pH | 7.08 | SU | Effluent | Qualifying Storm Event | pH_Field | 1374593 | |
| May 28, 2026 | Total Suspended Solids (TSS) | 55 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1374593 | |
| May 28, 2026 | Zinc, Total | .257 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1374593 | |
| Apr 10, 2026 | Oil and Grease | DNQ 1.89 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1372824 | |
| Apr 10, 2026 | pH | 6.79 | SU | Effluent | Qualifying Storm Event | pH_Field | 1372824 | |
| Apr 10, 2026 | Total Suspended Solids (TSS) | 144 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1372824 | |
| Apr 10, 2026 | Zinc, Total | .172 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1372824 | |
| Nov 13, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1359783 | |
| Nov 13, 2025 | pH | 7.2 | SU | Effluent | Qualifying Storm Event | pH_Field | 1359783 | |
| Nov 13, 2025 | Total Suspended Solids (TSS) | 90.6 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1359783 | |
| Nov 13, 2025 | Zinc, Total | .968 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1359783 | |
| Oct 02, 2025 | Oil and Grease | 2.23 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1359781 | |
| Oct 02, 2025 | pH | 7.23 | SU | Effluent | Qualifying Storm Event | pH_Field | 1359781 | |
| Oct 02, 2025 | Total Suspended Solids (TSS) | 88.4 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1359781 | |
| Oct 02, 2025 | Zinc, Total | .436 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1359781 | |
| Feb 13, 2025 | Oil and Grease | 2.56 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1323569 | |
| Feb 13, 2025 | pH | 7.3 | SU | Effluent | Qualifying Storm Event | pH_Field | 1323569 | |
| Feb 13, 2025 | Total Suspended Solids (TSS) | 49.4 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1323569 | |
| Feb 04, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1322804 | |
| Feb 04, 2025 | pH | 7.32 | SU | Effluent | Qualifying Storm Event | pH_Field | 1322804 | |
| Feb 04, 2025 | Total Suspended Solids (TSS) | 47.4 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1322804 | |
| Nov 22, 2024 | Oil and Grease | 1.7 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1318626 | |
| Nov 22, 2024 | pH | 7.01 | SU | Effluent | Qualifying Storm Event | pH_Field | 1318626 | |
| Nov 22, 2024 | Total Suspended Solids (TSS) | 156 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1318626 | |
| Apr 04, 2024 | Oil and Grease | 4.32 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1284631 | |
| Apr 04, 2024 | pH | 7.13 | SU | Effluent | Qualifying Storm Event | pH_Field | 1284631 | |
| Apr 04, 2024 | Total Suspended Solids (TSS) | 106 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1284631 | |
| Apr 04, 2024 | Zinc, Total | .224 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1284631 | |
| Feb 07, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1278152 | |
| Feb 07, 2024 | pH | 7.31 | SU | Effluent | Qualifying Storm Event | pH_Field | 1278152 | |
| Feb 07, 2024 | Total Suspended Solids (TSS) | 56.1 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1278152 | |
| Feb 07, 2024 | Zinc, Total | .188 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1278152 | |
| Mar 09, 2023 | Oil and Grease | 3.45 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1250370 | |
| Mar 09, 2023 | pH | 7.37 | SU | Effluent | Qualifying Storm Event | pH_Field | 1250370 | |
| Mar 09, 2023 | Total Suspended Solids (TSS) | 43.6 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1250370 | |
| Feb 03, 2023 | Oil and Grease | 3.09 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1250369 | |
| Feb 03, 2023 | pH | 7.31 | SU | Effluent | Qualifying Storm Event | pH_Field | 1250369 | |
| Feb 03, 2023 | Total Suspended Solids (TSS) | 18.6 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1250369 | |
| Nov 01, 2022 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1250360 | |
| Nov 01, 2022 | pH | 7.07 | SU | Effluent | Qualifying Storm Event | pH_Field | 1250360 | |
| Nov 01, 2022 | Total Suspended Solids (TSS) | 53.7 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1250360 | |
| Sep 19, 2022 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1250355 | |
| Sep 19, 2022 | pH | 7.03 | SU | Effluent | Qualifying Storm Event | pH_Field | 1250355 | |
| Sep 19, 2022 | Total Suspended Solids (TSS) | 40.1 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1250355 | |
| Sep 19, 2022 | Zinc, Total | .835 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1250355 | |
| Dec 13, 2021 | Oil and Grease | 6.47 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1177204 | |
| Dec 13, 2021 | pH | 7.39 | SU | Effluent | Qualifying Storm Event | pH_Field | 1177204 | |
| Dec 13, 2021 | Total Suspended Solids (TSS) | 165 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1177204 | |
| Nov 01, 2021 | Oil and Grease | 3.19 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1176919 |
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 | 8 | 8 Violation · 0 Potential (preliminary) · 0 Dismissed | Jul 01, 2004 – Aug 15, 2015 | Oct 21, 2026 | All violations |
| Enforcement actions | 11 | 11 issued · 0 draft · 0 withdrawn, rescinded or superseded | Aug 19, 2004 – Sep 16, 2015 | Oct 21, 2026 | All actions |
| Inspections | 1 | inspections, not findings | Dec 19, 2011 – Dec 19, 2011 | 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 (31 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jul 10, 2026 | Annual reports | 1336605 | Annual report 2025 | — | |
| Jul 15, 2025 | Annual reports | 1295474 | Annual report 2024 | — | |
| Jul 09, 2024 | Annual reports | 1244624 | Annual report 2023 | — | |
| Jul 17, 2023 | Annual reports | 1190692 | Annual report 2022 | — | |
| Jul 14, 2022 | Annual reports | 1114190 | Annual report 2021 | — | |
| Jul 19, 2021 | Annual reports | 1070267 | Annual report 2020 | — | |
| Jul 13, 2020 | Annual reports | 987645 | Annual report 2019 | — | |
| Jul 08, 2019 | Annual reports | 955263 | Annual report 2018 | — | |
| Jul 16, 2018 | Annual reports | 940683 | Annual report 2017 | — | |
| Jun 09, 2017 | Annual reports | 880025 | Annual report 2016 | — | |
| Jul 13, 2016 | Annual reports | 847814 | Annual report 2015 | — | |
| Sep 16, 2015 | Enforcement actions | 420382 | 1st NNC - AR (First Notice of Non-Compliance (annual report)) | Historical | |
| Aug 15, 2015 | Violations | 858173 | Late Report | Violation | Report |
| Oct 23, 2012 | Enforcement actions | 412514 | 2nd NNC - AR (Second Notice of Non-Compliance (annual report)) | Historical | |
| Aug 31, 2012 | Enforcement actions | 410177 | 1st NNC - AR (First Notice of Non-Compliance (annual report)) | Historical | |
| Jul 02, 2012 | Violations | 849337 | Late Report | Violation | Report |
| Dec 19, 2011 | Enforcement actions | 407655 | Verbal Communication | Active | |
| Dec 19, 2011 | Inspections | 2013625 | B Type compliance | — | Additional Info Required |
| Dec 19, 2011 | Violations | 847050 | Incomplete/Insufficient SWPPP | Violation | Inspection |
| Oct 23, 2009 | Enforcement actions | 401703 | SEL (Staff Enforcement Letter) | Historical | |
| Jul 01, 2009 | Violations | 841543 | Deficient BMP Implementation | Violation | Report |
| Aug 01, 2008 | Enforcement actions | 353668 | NNC (Notice of Non-Compliance) | Historical | |
| Jul 02, 2008 | Violations | 783710 | Late Report | Violation | Report |
| Oct 25, 2006 | Enforcement actions | 317316 | NNC (Notice of Non-Compliance) | Active | |
| Aug 17, 2006 | Enforcement actions | 315954 | NNC (Notice of Non-Compliance) | Active |
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.