Mt Diablo Unified Sch Dist Mai
Active WDID 2 07I018308 Concord, Contra Costa County Region 2 · San Francisco Bay
At a glance
- Permit Evidence: SMARTS record
- Active Industrial
- Notice of Intent (WDID code I) · Permits and applications
- Location Evidence: facility-reported
- Concord, Contra Costa County
- Region 2 · San Francisco Bay · 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
- 2 waterbodies; 2 on the 2026 303(d) list
- Proximity only; not a discharge pathway · Nearby waterbodies
- Monitoring results Evidence: facility-reported
- 446 distinct results, 11 reporting years (2015 to 2025)
- Most recent sample Jan 05, 2026 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 1 inspection · 2 violation records · 3 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
- 37.98176, -122.04429
- 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
- 1480 Gasoline Aly 1480 Gasoline Alley, Concord 94520
- Regional Water Board
- 2 — San Francisco Bay
HUC12 watershed Evidence: spatial
- Walnut Creek-Frontal Suisin Bay Estuaries HUC12 180500010204
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
- Mount Diablo Unified School District
- Primary industry (SIC)
- 4151-School Buses
- Application ID
- 181966
- NOI processed
- Aug 21, 2003
- Last certified
- Oct 12, 2026
- Facility size
- 6 Acres
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 181966 | Industrial | Active | Aug 21, 2003 | — | Oct 12, 2026 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Galindo 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 |
|---|---|---|---|
| Walnut Creek CAR2073104019990218110904 | 608 m | listed | 5 |
| Pine Creek subwatershed (Contra Costa Co, tributary to Walnut Creek) CAR2073101119990218101152 | 879 m | listed | 1 |
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.
446 distinct measurements across 7 parameters, most recent sample Jan 05, 2026.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2025 | 10 | 5 | 0 | Dec 22, 2025 | Jan 05, 2026 |
| 2024 | 30 | 5 | 0 | Feb 04, 2025 | Feb 13, 2025 |
| 2023 | 18 | 6 | 0 | Dec 20, 2023 | Dec 20, 2023 |
| 2022 | 51 | 5 | 0 | Dec 27, 2022 | Feb 27, 2023 |
| 2021 | 35 | 5 | 0 | Dec 13, 2021 | Dec 29, 2021 |
| 2020 | 30 | 5 | 0 | Jan 28, 2021 | Feb 19, 2021 |
| 2019 | 30 | 5 | 0 | Dec 18, 2019 | Jan 16, 2020 |
| 2018 | 60 | 5 | 0 | Nov 29, 2018 | Feb 04, 2019 |
| 2017 | 60 | 5 | 0 | Nov 16, 2017 | Mar 01, 2018 |
| 2016 | 82 | 6 | 0 | Dec 08, 2016 | Mar 24, 2017 |
| 2015 | 40 | 6 | 0 | Dec 03, 2015 | Jan 22, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Gasoline | mg/L | 87 | 81 | Dec 03, 2015 | Jan 05, 2026 | Results |
| Oil and Grease | mg/L | 87 | 71 | Dec 03, 2015 | Jan 05, 2026 | Results |
| Total Suspended Solids (TSS) | mg/L | 87 | 3 | Dec 03, 2015 | Jan 05, 2026 | Results |
| pH | SU | 80 | 0 | Dec 03, 2015 | Jan 05, 2026 | Results |
| Diesel Oil | mg/L | 53 | 23 | Nov 29, 2018 | Jan 05, 2026 | Results |
| Petroleum Hydrocarbons, Total | mg/L | 34 | 1 | Dec 03, 2015 | Mar 01, 2018 | Results |
| TPH as Motor Oil | mg/L | 18 | 2 | Dec 03, 2015 | Dec 20, 2023 | Results |
All results (446 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Jan 05, 2026 | Diesel Oil | ND | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1364328 | |
| Jan 05, 2026 | Gasoline | ND | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1364328 | |
| Jan 05, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1364328 | |
| Jan 05, 2026 | pH | 7.4 | SU | Effluent | Qualifying Storm Event | pH_Field | 1364328 | |
| Jan 05, 2026 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 1364328 | |
| Dec 22, 2025 | Diesel Oil | ND | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1364336 | |
| Dec 22, 2025 | Gasoline | ND | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1364336 | |
| Dec 22, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1364336 | |
| Dec 22, 2025 | pH | 7.6 | SU | Effluent | Qualifying Storm Event | pH_Field | 1364336 | |
| Dec 22, 2025 | Total Suspended Solids (TSS) | 3.6 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1364336 | |
| Feb 13, 2025 | Diesel Oil | ND | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1344735 | |
| Feb 13, 2025 | Diesel Oil | DNQ .074 | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1344735 | |
| Feb 13, 2025 | Diesel Oil | DNQ .058 | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1344735 | |
| Feb 13, 2025 | Gasoline | ND | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1344735 | |
| Feb 13, 2025 | Gasoline | ND | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1344735 | |
| Feb 13, 2025 | Gasoline | ND | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1344735 | |
| Feb 13, 2025 | Oil and Grease | DNQ 2.1 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1344735 | |
| Feb 13, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1344735 | |
| Feb 13, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1344735 | |
| Feb 13, 2025 | pH | 8.43 | SU | Effluent | Qualifying Storm Event | pH_Field | 1344735 | |
| Feb 13, 2025 | pH | 8.68 | SU | Effluent | Qualifying Storm Event | pH_Field | 1344735 | |
| Feb 13, 2025 | pH | 9.02 | SU | Effluent | Qualifying Storm Event | pH_Field | 1344735 | |
| Feb 13, 2025 | Total Suspended Solids (TSS) | 66.4 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1344735 | |
| Feb 13, 2025 | Total Suspended Solids (TSS) | 95.6 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1344735 | |
| Feb 13, 2025 | Total Suspended Solids (TSS) | 5.2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1344735 | |
| Feb 04, 2025 | Diesel Oil | ND | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1344728 | |
| Feb 04, 2025 | Diesel Oil | DNQ .084 | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1344728 | |
| Feb 04, 2025 | Diesel Oil | ND | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1344728 | |
| Feb 04, 2025 | Gasoline | ND | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1344728 | |
| Feb 04, 2025 | Gasoline | ND | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1344728 | |
| Feb 04, 2025 | Gasoline | ND | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1344728 | |
| Feb 04, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1344728 | |
| Feb 04, 2025 | Oil and Grease | 8.9 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1344728 | |
| Feb 04, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1344728 | |
| Feb 04, 2025 | pH | 7.9 | SU | Effluent | Qualifying Storm Event | pH_Field | 1344728 | |
| Feb 04, 2025 | pH | 8.5 | SU | Effluent | Qualifying Storm Event | pH_Field | 1344728 | |
| Feb 04, 2025 | pH | 8.4 | SU | Effluent | Qualifying Storm Event | pH_Field | 1344728 | |
| Feb 04, 2025 | Total Suspended Solids (TSS) | 95.6 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1344728 | |
| Feb 04, 2025 | Total Suspended Solids (TSS) | 145 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1344728 | |
| Feb 04, 2025 | Total Suspended Solids (TSS) | 120 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1344728 | |
| Dec 20, 2023 | Diesel Oil | DNQ .092 | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1272428 | |
| Dec 20, 2023 | Diesel Oil | DNQ .089 | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1272428 | |
| Dec 20, 2023 | Diesel Oil | ND | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1272428 | |
| Dec 20, 2023 | Gasoline | ND | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1272428 | |
| Dec 20, 2023 | Gasoline | ND | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1272428 | |
| Dec 20, 2023 | Gasoline | ND | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1272428 | |
| Dec 20, 2023 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1272428 | |
| Dec 20, 2023 | Oil and Grease | DNQ 3.7 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1272428 | |
| Dec 20, 2023 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1272428 | |
| Dec 20, 2023 | pH | 6.8 | SU | Effluent | Qualifying Storm Event | pH_Field | 1272428 |
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 | 2 | 2 Violation · 0 Potential (preliminary) · 0 Dismissed | Jan 01, 2023 – Jul 15, 2025 | Oct 21, 2026 | All violations |
| Enforcement actions | 3 | 3 issued · 0 draft · 0 withdrawn, rescinded or superseded | Jan 12, 2023 – Sep 10, 2025 | Oct 21, 2026 | All actions |
| Inspections | 1 | inspections, not findings | May 15, 2018 – May 15, 2018 | 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 (17 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jul 14, 2026 | Annual reports | 1336630 | Annual report 2025 | — | |
| Sep 29, 2025 | Annual reports | 1295499 | Annual report 2024 | — | |
| Sep 10, 2025 | Enforcement actions | 463296 | NOV (Notice of Violation) | Active | |
| Aug 08, 2025 | Enforcement actions | 457230 | NOV (Notice of Violation) | Active | |
| Jul 15, 2025 | Violations | 892701 | Late Report | Violation | Report |
| Aug 14, 2024 | Annual reports | 1244649 | Annual report 2023 | — | |
| Jul 14, 2023 | Annual reports | 1190718 | Annual report 2022 | — | |
| Jan 12, 2023 | Enforcement actions | 449388 | SEL (Staff Enforcement Letter) | Historical | |
| Jan 01, 2023 | Violations | 884445 | Late Report | Violation | Report |
| Aug 10, 2022 | Annual reports | 1114216 | Annual report 2021 | — | |
| Aug 13, 2021 | Annual reports | 1070293 | Annual report 2020 | — | |
| Jul 17, 2020 | Annual reports | 987672 | Annual report 2019 | — | |
| Jul 17, 2019 | Annual reports | 955290 | Annual report 2018 | — | |
| Jul 16, 2018 | Annual reports | 940710 | Annual report 2017 | — | |
| May 15, 2018 | Inspections | 2038120 | B Type compliance | — | No Further Action |
| Sep 27, 2017 | Annual reports | 880055 | Annual report 2016 | — | |
| Jul 11, 2016 | Annual reports | 846633 | 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.