West County Transportation Santa Rosa
Active WDID 1 49I010400 Santa Rosa, Sonoma County Region 1 · North Coast
At a glance
- Permit Evidence: SMARTS record
- Active Industrial
- Notice of Intent (WDID code I) · Permits and applications
- Location Evidence: facility-reported
- Santa Rosa, Sonoma County
- Region 1 · North Coast · 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
- 1 waterbody; 1 on the 2026 303(d) list
- Proximity only; not a discharge pathway · Nearby waterbodies
- Monitoring results Evidence: facility-reported
- 190 distinct results, 8 reporting years (2015 to 2025)
- Most recent sample Apr 20, 2026 · 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
- 38.39443, -122.725122
- 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
- 367 W Robles Ave, Santa Rosa 95407
- Regional Water Board
- 1 — North Coast
HUC12 watershed Evidence: spatial
- Upper Laguna De Santa Rosa HUC12 180101100701
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
- West Cnty Transportation
- Primary industry (SIC)
- 4151-School Buses
- Application ID
- 178847
- NOI processed
- Aug 04, 1993
- Last certified
- Nov 20, 2019
- Facility size
- 9.4 Acres
- Impervious area
- 95 %
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 178847 | Industrial | Active | Aug 04, 1993 | — | Nov 20, 2019 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Colgan Creek
- 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 |
|---|---|---|---|
| Russian River HU, Middle Russian River HA, Laguna HSA, tributaries to the Laguna de Santa Rosa (except Santa Rosa Creek and its tributaries) CAR1142100020131104054267 | 859 m | listed | 7 |
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.
190 distinct measurements across 5 parameters, most recent sample Apr 20, 2026.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2025 | 19 | 4 | 0 | Oct 13, 2025 | Apr 20, 2026 |
| 2024 | 25 | 4 | 0 | Nov 20, 2024 | Jan 31, 2025 |
| 2023 | 8 | 4 | 0 | Dec 06, 2023 | Jan 02, 2024 |
| 2022 | 44 | 5 | 0 | Nov 08, 2022 | Mar 09, 2023 |
| 2018 | 14 | 4 | 0 | Jan 09, 2019 | Mar 28, 2019 |
| 2017 | 24 | 4 | 0 | Jan 08, 2018 | Apr 09, 2018 |
| 2016 | 24 | 3 | 0 | Oct 14, 2016 | Feb 02, 2017 |
| 2015 | 32 | 4 | 0 | Dec 21, 2015 | May 06, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Oil and Grease | mg/L | 53 | 26 | Dec 21, 2015 | Apr 20, 2026 | Results |
| Total Suspended Solids (TSS) | mg/L | 53 | 7 | Dec 21, 2015 | Apr 20, 2026 | Results |
| pH | SU | 43 | 0 | Dec 21, 2015 | Apr 20, 2026 | Results |
| Diesel Oil | mg/L | 39 | 25 | Dec 21, 2015 | Apr 20, 2026 | Results |
| Turbidity | NTU | 2 | 0 | Nov 08, 2022 | Nov 08, 2022 | Results |
All results (190 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Apr 20, 2026 | Diesel Oil | .907 | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1372416 | |
| Apr 20, 2026 | Diesel Oil | .042 | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1372416 | |
| Apr 20, 2026 | Diesel Oil | .044 | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1372416 | |
| Apr 20, 2026 | Oil and Grease | 1.85 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1372416 | |
| Apr 20, 2026 | Oil and Grease | 1.51 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1372416 | |
| Apr 20, 2026 | Oil and Grease | 1.16 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1372416 | |
| Apr 20, 2026 | pH | 6.86 | SU | Effluent | Qualifying Storm Event | pH_Field | 1372416 | |
| Apr 20, 2026 | pH | 6.71 | SU | Effluent | Qualifying Storm Event | pH_Field | 1372416 | |
| Apr 20, 2026 | pH | 7.32 | SU | Effluent | Qualifying Storm Event | pH_Field | 1372416 | |
| Apr 20, 2026 | Total Suspended Solids (TSS) | 35.5 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1372416 | |
| Apr 20, 2026 | Total Suspended Solids (TSS) | 18.6 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1372416 | |
| Apr 20, 2026 | Total Suspended Solids (TSS) | 22.1 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1372416 | |
| Oct 13, 2025 | Diesel Oil | .437 | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1356678 | |
| Oct 13, 2025 | Oil and Grease | .56 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1356678 | |
| Oct 13, 2025 | Oil and Grease | .62 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1356678 | |
| Oct 13, 2025 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Field | 1356678 | |
| Oct 13, 2025 | pH | 7.25 | SU | Effluent | Qualifying Storm Event | pH_Field | 1356678 | |
| Oct 13, 2025 | Total Suspended Solids (TSS) | 25.3 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1356678 | |
| Oct 13, 2025 | Total Suspended Solids (TSS) | 10.2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1356678 | |
| Jan 31, 2025 | Diesel Oil | 4.05 | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1323971 | |
| Jan 31, 2025 | Diesel Oil | .48 | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1323971 | |
| Jan 31, 2025 | Diesel Oil | .304 | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1323971 | |
| Jan 31, 2025 | Oil and Grease | 3.18 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1323971 | |
| Jan 31, 2025 | Oil and Grease | 1.35 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1323971 | |
| Jan 31, 2025 | Oil and Grease | 1.03 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1323971 | |
| Jan 31, 2025 | pH | 6.18 | SU | Effluent | Qualifying Storm Event | pH_Field | 1323971 | |
| Jan 31, 2025 | pH | 6.36 | SU | Effluent | Qualifying Storm Event | pH_Field | 1323971 | |
| Jan 31, 2025 | pH | 6.55 | SU | Effluent | Qualifying Storm Event | pH_Field | 1323971 | |
| Jan 31, 2025 | Total Suspended Solids (TSS) | 61 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1323971 | |
| Jan 31, 2025 | Total Suspended Solids (TSS) | 34.8 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1323971 | |
| Jan 31, 2025 | Total Suspended Solids (TSS) | 10.3 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1323971 | |
| Nov 20, 2024 | Diesel Oil | .358 | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1314554 | |
| Nov 20, 2024 | Oil and Grease | 1.23 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1314554 | |
| Nov 20, 2024 | Oil and Grease | .92 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1314554 | |
| Nov 20, 2024 | Oil and Grease | .73 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1314554 | |
| Nov 20, 2024 | Oil and Grease | .78 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1314554 | |
| Nov 20, 2024 | pH | 5.24 | SU | Effluent | Qualifying Storm Event | pH_Field | 1314554 | |
| Nov 20, 2024 | pH | 6.36 | SU | Effluent | Qualifying Storm Event | pH_Field | 1314554 | |
| Nov 20, 2024 | pH | 6.11 | SU | Effluent | Qualifying Storm Event | pH_Field | 1314554 | |
| Nov 20, 2024 | pH | 6.09 | SU | Effluent | Qualifying Storm Event | pH_Field | 1314554 | |
| Nov 20, 2024 | Total Suspended Solids (TSS) | 34.2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1314554 | |
| Nov 20, 2024 | Total Suspended Solids (TSS) | 30.2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1314554 | |
| Nov 20, 2024 | Total Suspended Solids (TSS) | 18.5 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1314554 | |
| Nov 20, 2024 | Total Suspended Solids (TSS) | 29.3 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1314554 | |
| Jan 02, 2024 | Diesel Oil | ND | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1272347 | |
| Jan 02, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1272347 | |
| Jan 02, 2024 | pH | 8.14 | SU | Effluent | Qualifying Storm Event | pH_Field | 1272347 | |
| Jan 02, 2024 | Total Suspended Solids (TSS) | 1.35 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1272347 | |
| Dec 06, 2023 | Diesel Oil | .704 | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1269210 | |
| Dec 06, 2023 | Oil and Grease | 1.49 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1269210 |
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, 2021 – Jul 01, 2021 | Oct 21, 2026 | All violations |
| Enforcement actions | 1 | 1 issued · 0 draft · 0 withdrawn, rescinded or superseded | Aug 17, 2021 – Aug 17, 2021 | Oct 21, 2026 | All actions |
| Inspections | 1 | inspections, not findings | Feb 16, 2017 – Feb 16, 2017 | 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 22, 2026 | Annual reports | 1334418 | Annual report 2025 | — | |
| Jul 15, 2025 | Annual reports | 1293200 | Annual report 2024 | — | |
| Jul 15, 2024 | Annual reports | 1242219 | Annual report 2023 | — | |
| Jul 12, 2023 | Annual reports | 1188174 | Annual report 2022 | — | |
| Jul 13, 2022 | Annual reports | 1111458 | Annual report 2021 | — | |
| Sep 28, 2021 | Annual reports | 1067413 | Annual report 2020 | — | |
| Aug 17, 2021 | Enforcement actions | 441414 | NOV (Notice of Violation) | Active | |
| Jul 01, 2021 | Violations | 877485 | Late Report | Violation | Report |
| Oct 12, 2020 | Annual reports | 984591 | Annual report 2019 | — | |
| Oct 08, 2020 | Annual reports | 952101 | Annual report 2018 | — | |
| Oct 02, 2020 | Annual reports | 937514 | Annual report 2017 | — | |
| Sep 23, 2020 | Annual reports | 876681 | Annual report 2016 | — | |
| Feb 16, 2017 | Inspections | 2032896 | B Type compliance | — | No Further Action |
| Jul 11, 2016 | Annual reports | 839936 | Annual report 2015 | — |
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.