Ultra Marble & Granite Inc
Active WDID 4 19I016705 Sun Valley, 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
- Sun Valley, Los Angeles County
- Region 4 · Los Angeles · Location · Statewide map
- Receiving water
- Los Angeles 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
- 108 distinct results, 11 reporting years (2015 to 2025)
- Most recent sample Feb 16, 2026 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 3 inspections · 3 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
- 34.23247, -118.37413
- 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
- 11140 Tuxford St, Sun Valley 91352
- Regional Water Board
- 4 — Los Angeles
HUC12 watershed Evidence: spatial
- Tujunga Wash-Los Angeles River HUC12 180701050208
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
- Ultra Marble Granite Inc
- Primary industry (SIC)
- 3281-Cut Stone and Stone Products
- Application ID
- 191237
- NOI processed
- Aug 08, 2001
- Last certified
- Jun 08, 2015
- Facility size
- 1 Acres
- Impervious area
- 100 %
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 191237 | Industrial | Active | Aug 08, 2001 | — | Jun 08, 2015 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Los Angeles River
- Discharges directly / indirectly
- Y / 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)
- C1 name is only a prefix of official names
7 official waterbodies share 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.
108 distinct measurements across 3 parameters, most recent sample Feb 16, 2026.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2025 | 12 | 3 | 0 | Dec 24, 2025 | Feb 16, 2026 |
| 2024 | 6 | 3 | 0 | Feb 13, 2025 | Feb 13, 2025 |
| 2023 | 6 | 3 | 0 | Feb 01, 2024 | Feb 01, 2024 |
| 2022 | 6 | 3 | 0 | Jan 04, 2023 | Jan 04, 2023 |
| 2021 | 12 | 3 | 0 | Dec 14, 2021 | Mar 28, 2022 |
| 2020 | 12 | 3 | 0 | Dec 28, 2020 | Jan 29, 2021 |
| 2019 | 12 | 3 | 0 | Dec 04, 2019 | Mar 10, 2020 |
| 2018 | 24 | 3 | 0 | Nov 29, 2018 | Jan 31, 2019 |
| 2017 | 3 | 3 | 0 | Jan 08, 2018 | Jan 08, 2018 |
| 2016 | 9 | 3 | 0 | Dec 22, 2016 | Jan 09, 2017 |
| 2015 | 6 | 3 | 0 | Feb 18, 2016 | Mar 11, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Oil and Grease | mg/L | 36 | 15 | Feb 18, 2016 | Feb 16, 2026 | Results |
| pH | SU | 36 | 0 | Feb 18, 2016 | Feb 16, 2026 | Results |
| Total Suspended Solids (TSS) | mg/L | 36 | 0 | Feb 18, 2016 | Feb 16, 2026 | Results |
All results (108 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Feb 16, 2026 | Oil and Grease | 1.5 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1368174 | |
| Feb 16, 2026 | Oil and Grease | 2.6 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1368174 | |
| Feb 16, 2026 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1368174 | |
| Feb 16, 2026 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1368174 | |
| Feb 16, 2026 | Total Suspended Solids (TSS) | 23.6 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1368174 | |
| Feb 16, 2026 | Total Suspended Solids (TSS) | 39.1 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1368174 | |
| Dec 24, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1363011 | |
| Dec 24, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1363011 | |
| Dec 24, 2025 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1363011 | |
| Dec 24, 2025 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1363011 | |
| Dec 24, 2025 | Total Suspended Solids (TSS) | 29 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1363011 | |
| Dec 24, 2025 | Total Suspended Solids (TSS) | 6.9 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1363011 | |
| Feb 13, 2025 | Oil and Grease | .9 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1324345 | |
| Feb 13, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1324345 | |
| Feb 13, 2025 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1324345 | |
| Feb 13, 2025 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1324345 | |
| Feb 13, 2025 | Total Suspended Solids (TSS) | 72.3 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1324345 | |
| Feb 13, 2025 | Total Suspended Solids (TSS) | 6.5 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1324345 | |
| Feb 01, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1279406 | |
| Feb 01, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1279406 | |
| Feb 01, 2024 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1279406 | |
| Feb 01, 2024 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1279406 | |
| Feb 01, 2024 | Total Suspended Solids (TSS) | 18 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1279406 | |
| Feb 01, 2024 | Total Suspended Solids (TSS) | 9.2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1279406 | |
| Jan 04, 2023 | Oil and Grease | 3.8 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1226381 | |
| Jan 04, 2023 | Oil and Grease | 1.9 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1226381 | |
| Jan 04, 2023 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1226381 | |
| Jan 04, 2023 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1226381 | |
| Jan 04, 2023 | Total Suspended Solids (TSS) | 70 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1226381 | |
| Jan 04, 2023 | Total Suspended Solids (TSS) | 24.2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1226381 | |
| Mar 28, 2022 | Oil and Grease | 1.2 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1182657 | |
| Mar 28, 2022 | Oil and Grease | 1.3 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1182657 | |
| Mar 28, 2022 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1182657 | |
| Mar 28, 2022 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1182657 | |
| Mar 28, 2022 | Total Suspended Solids (TSS) | 113 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1182657 | |
| Mar 28, 2022 | Total Suspended Solids (TSS) | 28.5 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1182657 | |
| Dec 14, 2021 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1176069 | |
| Dec 14, 2021 | Oil and Grease | 1.2 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1176069 | |
| Dec 14, 2021 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1176069 | |
| Dec 14, 2021 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1176069 | |
| Dec 14, 2021 | Total Suspended Solids (TSS) | 6.1 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1176069 | |
| Dec 14, 2021 | Total Suspended Solids (TSS) | 5 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1176069 | |
| Jan 29, 2021 | Oil and Grease | 1.5 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1143380 | |
| Jan 29, 2021 | Oil and Grease | .9 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1143380 | |
| Jan 29, 2021 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1143380 | |
| Jan 29, 2021 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1143380 | |
| Jan 29, 2021 | Total Suspended Solids (TSS) | 20.6 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1143380 | |
| Jan 29, 2021 | Total Suspended Solids (TSS) | 7.6 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1143380 | |
| Dec 28, 2020 | Oil and Grease | 1 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1140260 | |
| Dec 28, 2020 | Oil and Grease | 1.1 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1140260 |
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 | 3 | 3 Violation · 0 Potential (preliminary) · 0 Dismissed | Jul 01, 2002 – Oct 16, 2002 | Oct 21, 2026 | All violations |
| Enforcement actions | 3 | 2 issued · 0 draft · 1 withdrawn, rescinded or superseded | Jul 19, 2002 – Nov 12, 2002 | Oct 21, 2026 | All actions |
| Inspections | 3 | inspections, not findings | Oct 16, 2002 – Nov 04, 2003 | 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 (20 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jul 07, 2026 | Annual reports | 1335423 | Annual report 2025 | — | |
| May 28, 2025 | Annual reports | 1294239 | Annual report 2024 | — | |
| May 31, 2024 | Annual reports | 1243325 | Annual report 2023 | — | |
| Jun 05, 2023 | Annual reports | 1189327 | Annual report 2022 | — | |
| Jun 06, 2022 | Annual reports | 1112707 | Annual report 2021 | — | |
| Jun 28, 2021 | Annual reports | 1068717 | Annual report 2020 | — | |
| Jun 01, 2020 | Annual reports | 985977 | Annual report 2019 | — | |
| Jun 12, 2019 | Annual reports | 953532 | Annual report 2018 | — | |
| Jul 05, 2018 | Annual reports | 938948 | Annual report 2017 | — | |
| Jun 12, 2017 | Annual reports | 878191 | Annual report 2016 | — | |
| Jun 16, 2016 | Annual reports | 845863 | Annual report 2015 | — | |
| Nov 04, 2003 | Inspections | 1736695 | Enforcement Follow-up | — | |
| Feb 19, 2003 | Inspections | 1736767 | Enforcement Follow-up | — | |
| Nov 12, 2002 | Enforcement actions | 246487 | NOV (Notice of Violation) | Historical | UNKNOWN |
| Oct 16, 2002 | Inspections | 1736766 | Enforcement Follow-up | — | Additional Info Required |
| Oct 16, 2002 | Violations | 211975 | Deficient BMP Implementation | Violation | Inspection |
| Oct 16, 2002 | Violations | 211976 | Deficient BMP Implementation | Violation | Inspection |
| Aug 19, 2002 | Enforcement actions | 245983 | NOV (Notice of Violation) | Historical | UNKNOWN |
| Jul 19, 2002 | Enforcement actions | 245982 | SEL (Staff Enforcement Letter) | Withdrawn | UNKNOWN |
| Jul 01, 2002 | Violations | 212534 | Deficient Report | 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.