Maintenance Yard
Active WDID 4 19I017860 Calabasas, Los Angeles County Region 4 · Los Angeles
At a glance
- Permit Evidence: SMARTS record
- Active Industrial
- Notice of Intent (WDID code I) · Permits and applications
- Location Evidence: facility-reported
- Calabasas, Los Angeles County
- Region 4 · Los Angeles · Location · Statewide map
- Receiving water
- Las Virgenes Creek (as reported by the facility)
- Evidence: identification corroborated Las Virgenes Creek Details
- Identified receiving water on the 2026 303(d) list
- Yes · 12 Appendix A decisions, category 5 Evidence: State-published
- Describes the waterbody, not this facility · Waterbody profile
- 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
- 100 distinct results, 11 reporting years (2015 to 2025)
- Most recent sample Nov 17, 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
- 34.13478, -118.70285
- 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
- 4029 Las Virgenes Rd 4111 N Las Virgenes Rd, Calabasas 91302
- Regional Water Board
- 4 — Los Angeles
HUC12 watershed Evidence: spatial
- Las Virgenes Creek HUC12 180701040103
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
- Las Virgenes Unified School District
- Primary industry (SIC)
- 4151-School Buses
- Application ID
- 191486
- NOI processed
- Mar 04, 2003
- Last certified
- Jun 25, 2025
- Facility size
- 161000 SqFt
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 191486 | Industrial | Active | Mar 04, 2003 | — | Jun 25, 2025 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Las Virgenes Creek
- Discharges directly / indirectly
- Y / N (as answered in the permit application)
Evidence: identification corroborated Las Virgenes Creek CAR4042201019990201141611
Receiving water reported by facility — waterbody identification corroborated by geographic evidence.
Nearest distance from the reported facility location: 247 m. Method receiving_water/2.
2026 Integrated Report status Evidence: State-published
Las Virgenes Creek is on the 2026 Clean Water Act section 303(d) list (12 Appendix A decisions; category 5).
| Pollutant | Category | Listing decision | TMDL requirement | Decision ID |
|---|---|---|---|---|
| Benthic Community Effects | 5 | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL) | 5B · Malibu Lagoon Benthic Comm. Effects (71) | 151618 |
| Indicator Bacteria | 5 | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL) | 5B · Malibu Pathogens (47 in part) | 150294 |
| Invasive Species | 5 | List on 303(d) list (TMDL required list) | 5A | 76593 |
| Nutrients (Algae) | 5 | List on 303(d) list (being addressed by USEPA approved TMDL) | 5B · Malibu Creek Nutrients (50) | 70129 |
| Organic Enrichment/Low Dissolved Oxygen | 5 | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL) | 5B · Malibu Creek Nutrients (50) | 76719 |
| Oxygen, Dissolved | 5 | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL) | 5B · Malibu Creek Nutrients (50) | 151902 |
| Scum/Foam-unnatural | 5 | List on 303(d) list (being addressed by USEPA approved TMDL) | 5B · Malibu Creek Nutrients (50) | 76040 |
| Sedimentation/Siltation | 5 | List on 303(d) list (being addressed by USEPA approved TMDL) | 5B · Malibu Lagoon Benthic Comm. Effects (71) | 78749 |
| Selenium | 5 | Do Not Delist from 303(d) list (TMDL required list) | 5A | 137602 |
| Sulfates | 5 | List on 303(d) list (TMDL required list) | 5A | 137605 |
| Total Dissolved Solids | 5 | List on 303(d) list (being addressed by USEPA approved TMDL) | 5B · Malibu Lagoon Benthic Comm. Effects (71) | 137608 |
| Trash | 5 | List on 303(d) list (being addressed by USEPA approved TMDL) | 5B · Malibu Creek Watershed Trash (63) | 69504 |
Published by the State Water Resources Control Board (2026 California Integrated Report, Appendix A). Listing status is taken from Appendix A only. State Board adoption 2026-02-03; USEPA approval not confirmed. A listing describes the waterbody, not this facility. Waterbody profile.
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 |
|---|---|---|---|
| Las Virgenes Creek CAR4042201019990201141611 | 247 m | listed | 12 |
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.
100 distinct measurements across 4 parameters, most recent sample Nov 17, 2025.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2025 | 9 | 3 | 0 | Nov 17, 2025 | Nov 17, 2025 |
| 2024 | 6 | 2 | 0 | Mar 14, 2025 | Mar 14, 2025 |
| 2023 | 9 | 3 | 0 | Dec 21, 2023 | Feb 01, 2024 |
| 2022 | 9 | 3 | 0 | Jan 09, 2023 | Jan 09, 2023 |
| 2021 | 9 | 3 | 0 | Dec 14, 2021 | Dec 14, 2021 |
| 2020 | 9 | 3 | 0 | Mar 10, 2021 | Mar 10, 2021 |
| 2019 | 9 | 3 | 0 | Dec 04, 2019 | Dec 04, 2019 |
| 2018 | 18 | 3 | 0 | Dec 06, 2018 | Mar 06, 2019 |
| 2017 | 9 | 3 | 0 | Jan 09, 2018 | Jan 09, 2018 |
| 2016 | 5 | 3 | 0 | Oct 28, 2016 | Jan 19, 2017 |
| 2015 | 8 | 4 | 0 | Sep 15, 2015 | Mar 11, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| pH | SU | 34 | 0 | Sep 15, 2015 | Nov 17, 2025 | Results |
| Total Suspended Solids (TSS) | mg/L | 34 | 0 | Sep 15, 2015 | Nov 17, 2025 | Results |
| Oil and Grease | mg/L | 30 | 25 | Sep 15, 2015 | Nov 17, 2025 | Results |
| Lead, Total | mg/L | 2 | 0 | Sep 15, 2015 | Mar 11, 2016 | Results |
All results (100 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Nov 17, 2025 | Oil and Grease | 2.3 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1359639 | |
| Nov 17, 2025 | Oil and Grease | DNQ 1.6 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1359639 | |
| Nov 17, 2025 | Oil and Grease | 3 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1359639 | |
| Nov 17, 2025 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1359639 | |
| Nov 17, 2025 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1359639 | |
| Nov 17, 2025 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1359639 | |
| Nov 17, 2025 | Total Suspended Solids (TSS) | 33 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1359639 | |
| Nov 17, 2025 | Total Suspended Solids (TSS) | 5.8 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1359639 | |
| Nov 17, 2025 | Total Suspended Solids (TSS) | 60 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1359639 | |
| Mar 14, 2025 | pH | 7 | SU | Effluent | Qualifying Storm Event | E150.2 | 1326288 | |
| Mar 14, 2025 | pH | 6 | SU | Effluent | Qualifying Storm Event | E150.2 | 1326288 | |
| Mar 14, 2025 | pH | 6 | SU | Effluent | Qualifying Storm Event | E150.2 | 1326288 | |
| Mar 14, 2025 | Total Suspended Solids (TSS) | 40 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1326288 | |
| Mar 14, 2025 | Total Suspended Solids (TSS) | 16 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1326288 | |
| Mar 14, 2025 | Total Suspended Solids (TSS) | 50 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1326288 | |
| Feb 01, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1276050 | |
| Feb 01, 2024 | Oil and Grease | DNQ 1.1 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1276050 | |
| Feb 01, 2024 | Oil and Grease | 1.2 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1276050 | |
| Dec 21, 2023 | pH | 6 | SU | Effluent | Qualifying Storm Event | E150.2 | 1272684 | |
| Dec 21, 2023 | pH | 6 | SU | Effluent | Qualifying Storm Event | E150.2 | 1272684 | |
| Dec 21, 2023 | pH | 6 | SU | Effluent | Qualifying Storm Event | E150.2 | 1272684 | |
| Dec 21, 2023 | Total Suspended Solids (TSS) | 18 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1272684 | |
| Dec 21, 2023 | Total Suspended Solids (TSS) | 18 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1272684 | |
| Dec 21, 2023 | Total Suspended Solids (TSS) | 20 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1272684 | |
| Jan 09, 2023 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1224059 | |
| Jan 09, 2023 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1224059 | |
| Jan 09, 2023 | Oil and Grease | DNQ .66 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1224059 | |
| Jan 09, 2023 | pH | 6.9 | SU | Effluent | Qualifying Storm Event | pH_Field | 1224059 | |
| Jan 09, 2023 | pH | 7.1 | SU | Effluent | Qualifying Storm Event | pH_Field | 1224059 | |
| Jan 09, 2023 | pH | 7.3 | SU | Effluent | Qualifying Storm Event | pH_Field | 1224059 | |
| Jan 09, 2023 | Total Suspended Solids (TSS) | 18 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1224059 | |
| Jan 09, 2023 | Total Suspended Solids (TSS) | 17 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1224059 | |
| Jan 09, 2023 | Total Suspended Solids (TSS) | 16 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1224059 | |
| Dec 14, 2021 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1173344 | |
| Dec 14, 2021 | Oil and Grease | DNQ .62 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1173344 | |
| Dec 14, 2021 | Oil and Grease | DNQ .63 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1173344 | |
| Dec 14, 2021 | pH | 7.1 | SU | Effluent | Qualifying Storm Event | pH_Field | 1173344 | |
| Dec 14, 2021 | pH | 7.3 | SU | Effluent | Qualifying Storm Event | pH_Field | 1173344 | |
| Dec 14, 2021 | pH | 7.1 | SU | Effluent | Qualifying Storm Event | pH_Field | 1173344 | |
| Dec 14, 2021 | Total Suspended Solids (TSS) | 38 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1173344 | |
| Dec 14, 2021 | Total Suspended Solids (TSS) | 44 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1173344 | |
| Dec 14, 2021 | Total Suspended Solids (TSS) | 30 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1173344 | |
| Mar 10, 2021 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1147578 | |
| Mar 10, 2021 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1147578 | |
| Mar 10, 2021 | Oil and Grease | 1 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1147578 | |
| Mar 10, 2021 | pH | 7.2 | SU | Effluent | Qualifying Storm Event | pH_Field | 1147578 | |
| Mar 10, 2021 | pH | 7.6 | SU | Effluent | Qualifying Storm Event | pH_Field | 1147578 | |
| Mar 10, 2021 | pH | 7.7 | SU | Effluent | Qualifying Storm Event | pH_Field | 1147578 | |
| Mar 10, 2021 | Total Suspended Solids (TSS) | 87 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1147578 | |
| Mar 10, 2021 | Total Suspended Solids (TSS) | 58 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1147578 |
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, 2009 – Jul 01, 2009 | Oct 21, 2026 | All violations |
| Enforcement actions | 1 | 1 issued · 0 draft · 0 withdrawn, rescinded or superseded | Jan 13, 2011 – Jan 13, 2011 | Oct 21, 2026 | All actions |
| Inspections | 1 | inspections, not findings | Feb 27, 2019 – Feb 27, 2019 | 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 |
|---|---|---|---|---|---|
| Jul 10, 2026 | Annual reports | 1335337 | Annual report 2025 | — | |
| Jul 14, 2025 | Annual reports | 1294149 | Annual report 2024 | — | |
| Jul 15, 2024 | Annual reports | 1243232 | Annual report 2023 | — | |
| Jul 14, 2023 | Annual reports | 1189234 | Annual report 2022 | — | |
| Jul 11, 2022 | Annual reports | 1112605 | Annual report 2021 | — | |
| Jul 01, 2021 | Annual reports | 1068612 | Annual report 2020 | — | |
| Jul 14, 2020 | Annual reports | 985866 | Annual report 2019 | — | |
| Jul 08, 2019 | Annual reports | 953418 | Annual report 2018 | — | |
| Feb 27, 2019 | Inspections | 2042243 | B Type compliance | — | No Further Action |
| Jul 12, 2018 | Annual reports | 938834 | Annual report 2017 | — | |
| Jun 30, 2017 | Annual reports | 878067 | Annual report 2016 | — | |
| Jul 26, 2016 | Annual reports | 844543 | Annual report 2015 | — | |
| Jan 13, 2011 | Enforcement actions | 405315 | 13267 Letter/Order (Water Code section 13267 letter or order) | Historical | |
| Jul 01, 2009 | Violations | 844542 | Deficient 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.