Ghilotti Bros Inc
Active WDID 2 21I026494 San Rafael, Marin 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
- San Rafael, Marin County
- Region 2 · San Francisco Bay · Location · Statewide map
- Receiving water
- San Pablo Bay (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
- 1 waterbody; 1 on the 2026 303(d) list
- Proximity only; not a discharge pathway · Nearby waterbodies
- Monitoring results Evidence: facility-reported
- 774 distinct results, 11 reporting years (2015 to 2025)
- Most recent sample Apr 10, 2026 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 0 inspections · 0 violation records · 0 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
- 37.95435, -122.506
- Precision
- 3 decimal places low precision
- Shared point
- No
- Matches application record
- same
Facility location as reported by the discharger in SMARTS; not a discharge point or outfall.
- Facility address
- 525 Jacoby Street, San Rafael 94901
- Regional Water Board
- 2 — San Francisco Bay
HUC12 watershed Evidence: spatial
- Angel Island-Frontal San Francisco Bay Estuaries HUC12 180500021001
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
- Ghilotti Bros Inc
- Primary industry (SIC)
- 3531-Construction Machinery and Equipment
- Application ID
- 469124
- NOI processed
- Mar 15, 2016
- Last certified
- Oct 20, 2025
- Facility size
- 1.46 Acres
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 469124 | Industrial | Active | Mar 15, 2016 | — | Oct 20, 2025 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- San Pablo Bay
- Discharges directly / indirectly
- N / Y (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 (2)
- C3 facility HUC12 not corroborated (complete published list)
- C4 candidate more than 5 km away
1 official waterbody shares 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.
| Waterbody (2026 Integrated Report) | Distance | 2026 303(d) list | Appendix A decisions |
|---|---|---|---|
| San Francisco Bay, Central CAB2031201019981217171707 | 970 m | listed | 11 |
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.
774 distinct measurements across 14 parameters, most recent sample Apr 10, 2026.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2025 | 86 | 12 | 0 | Oct 13, 2025 | Apr 10, 2026 |
| 2024 | 86 | 11 | 0 | Nov 11, 2024 | Jan 31, 2025 |
| 2023 | 92 | 13 | 0 | Dec 06, 2023 | Mar 29, 2024 |
| 2022 | 85 | 13 | 0 | Nov 01, 2022 | Mar 09, 2023 |
| 2021 | 52 | 10 | 0 | Oct 25, 2021 | Mar 03, 2022 |
| 2020 | 57 | 10 | 0 | Nov 17, 2020 | Jan 27, 2021 |
| 2019 | 80 | 10 | 0 | Dec 18, 2019 | Apr 06, 2020 |
| 2018 | 77 | 10 | 0 | Nov 21, 2018 | Feb 04, 2019 |
| 2017 | 60 | 11 | 0 | Nov 10, 2017 | Jan 24, 2018 |
| 2016 | 79 | 11 | 0 | Oct 14, 2016 | Jan 03, 2017 |
| 2015 | 20 | 10 | 0 | Mar 10, 2016 | Mar 10, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Benzene | ug/L | 76 | 6 | Mar 10, 2016 | Apr 10, 2026 | Results |
| Ethylbenzene | ug/L | 76 | 21 | Mar 10, 2016 | Apr 10, 2026 | Results |
| pH | SU | 76 | 0 | Mar 10, 2016 | Apr 10, 2026 | Results |
| Toluene | ug/L | 76 | 16 | Mar 10, 2016 | Apr 10, 2026 | Results |
| Gasoline | mg/L | 73 | 31 | Mar 10, 2016 | Apr 10, 2026 | Results |
| Oil and Grease | mg/L | 73 | 47 | Mar 10, 2016 | Apr 10, 2026 | Results |
| Diesel Oil | mg/L | 72 | 10 | Mar 10, 2016 | Apr 10, 2026 | Results |
| Total Suspended Solids (TSS) | mg/L | 72 | 0 | Mar 10, 2016 | Apr 10, 2026 | Results |
| Xylenes, Total | ug/L | 50 | 6 | Mar 10, 2016 | Dec 19, 2023 | Results |
| Motor Oil | mg/L | 44 | 13 | Nov 10, 2017 | Apr 10, 2026 | Results |
| m,p-Xylenes | ug/L | 30 | 9 | Nov 08, 2022 | Apr 10, 2026 | Results |
| o-Xylene | ug/L | 29 | 12 | Nov 08, 2022 | Apr 10, 2026 | Results |
Show 2 more parameters
All results (774 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Apr 10, 2026 | Benzene | 12 | ug/L | Effluent | Qualifying Storm Event | 1374712 | ||
| Apr 10, 2026 | Benzene | 12 | ug/L | Effluent | Qualifying Storm Event | 1374712 | ||
| Apr 10, 2026 | Diesel Oil | .55 | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1374712 | |
| Apr 10, 2026 | Diesel Oil | .11 | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1374712 | |
| Apr 10, 2026 | Ethylbenzene | .96 | ug/L | Effluent | Qualifying Storm Event | E602 | 1374712 | |
| Apr 10, 2026 | Ethylbenzene | DNQ .96 | ug/L | Effluent | Qualifying Storm Event | E602 | 1374712 | |
| Apr 10, 2026 | Gasoline | .096 | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1374712 | |
| Apr 10, 2026 | Gasoline | DNQ .069 | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1374712 | |
| Apr 10, 2026 | m,p-Xylenes | 2.8 | ug/L | Effluent | Qualifying Storm Event | 1374712 | ||
| Apr 10, 2026 | m,p-Xylenes | 2.8 | ug/L | Effluent | Qualifying Storm Event | 1374712 | ||
| Apr 10, 2026 | Motor Oil | .2 | mg/L | Effluent | Qualifying Storm Event | DU | 1374712 | |
| Apr 10, 2026 | o-Xylene | ND | ug/L | Effluent | Qualifying Storm Event | 1374712 | ||
| Apr 10, 2026 | Oil and Grease | DNQ 3.9 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1374712 | |
| Apr 10, 2026 | Oil and Grease | DNQ 4.3 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1374712 | |
| Apr 10, 2026 | pH | 8 | SU | Effluent | Qualifying Storm Event | pH_Field | 1374712 | |
| Apr 10, 2026 | pH | 8 | SU | Effluent | Qualifying Storm Event | pH_Field | 1374712 | |
| Apr 10, 2026 | Toluene | 2.6 | ug/L | Effluent | Qualifying Storm Event | E502.2 | 1374712 | |
| Apr 10, 2026 | Toluene | 2.6 | ug/L | Effluent | Qualifying Storm Event | E502.2 | 1374712 | |
| Apr 10, 2026 | Total Suspended Solids (TSS) | 37 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1374712 | |
| Apr 10, 2026 | Total Suspended Solids (TSS) | 40 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1374712 | |
| Feb 17, 2026 | Benzene | 49 | ug/L | Effluent | Qualifying Storm Event | 1374710 | ||
| Feb 17, 2026 | Benzene | 47 | ug/L | Effluent | Qualifying Storm Event | 1374710 | ||
| Feb 17, 2026 | Diesel Oil | .17 | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1374710 | |
| Feb 17, 2026 | Diesel Oil | .12 | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1374710 | |
| Feb 17, 2026 | Ethylbenzene | 9.8 | ug/L | Effluent | Qualifying Storm Event | E602 | 1374710 | |
| Feb 17, 2026 | Ethylbenzene | 9.5 | ug/L | Effluent | Qualifying Storm Event | E602 | 1374710 | |
| Feb 17, 2026 | Gasoline | .3 | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1374710 | |
| Feb 17, 2026 | Gasoline | .33 | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1374710 | |
| Feb 17, 2026 | m,p-Xylenes | 42 | ug/L | Effluent | Qualifying Storm Event | 1374710 | ||
| Feb 17, 2026 | m,p-Xylenes | 40 | ug/L | Effluent | Qualifying Storm Event | 1374710 | ||
| Feb 17, 2026 | Motor Oil | ND | mg/L | Effluent | Qualifying Storm Event | DU | 1374710 | |
| Feb 17, 2026 | Motor Oil | ND | mg/L | Effluent | Qualifying Storm Event | DU | 1374710 | |
| Feb 17, 2026 | o-Xylene | 9 | ug/L | Effluent | Qualifying Storm Event | 1374710 | ||
| Feb 17, 2026 | o-Xylene | 8.8 | ug/L | Effluent | Qualifying Storm Event | 1374710 | ||
| Feb 17, 2026 | Oil and Grease | DNQ 3.1 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1374710 | |
| Feb 17, 2026 | Oil and Grease | DNQ 2.8 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1374710 | |
| Feb 17, 2026 | pH | 7.9 | SU | Effluent | Qualifying Storm Event | pH_Field | 1374710 | |
| Feb 17, 2026 | pH | 7.9 | SU | Effluent | Qualifying Storm Event | pH_Field | 1374710 | |
| Feb 17, 2026 | Toluene | 53 | ug/L | Effluent | Qualifying Storm Event | E502.2 | 1374710 | |
| Feb 17, 2026 | Toluene | 51 | ug/L | Effluent | Qualifying Storm Event | E502.2 | 1374710 | |
| Feb 17, 2026 | Total Suspended Solids (TSS) | 31 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1374710 | |
| Feb 17, 2026 | Total Suspended Solids (TSS) | 31 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1374710 | |
| Nov 05, 2025 | Benzene | 4.7 | ug/L | Effluent | Qualifying Storm Event | E502.2 | 1362442 | |
| Nov 05, 2025 | Benzene | 4.9 | ug/L | Effluent | Qualifying Storm Event | E502.2 | 1362442 | |
| Nov 05, 2025 | Diesel Oil | .065 | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1362442 | |
| Nov 05, 2025 | Diesel Oil | .067 | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1362442 | |
| Nov 05, 2025 | Ethylbenzene | ND | ug/L | Effluent | Qualifying Storm Event | E602 | 1362442 | |
| Nov 05, 2025 | Ethylbenzene | ND | ug/L | Effluent | Qualifying Storm Event | E602 | 1362442 | |
| Nov 05, 2025 | Gasoline | ND | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1362442 | |
| Nov 05, 2025 | Gasoline | ND | mg/L | Effluent | Qualifying Storm Event | SW8015B | 1362442 |
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 | 0 | 0 Violation · 0 Potential (preliminary) · 0 Dismissed | — | Oct 21, 2026 | |
| Enforcement actions | 0 | 0 issued · 0 draft · 0 withdrawn, rescinded or superseded | — | Oct 21, 2026 | |
| Inspections | 0 | inspections, not findings | — | Oct 21, 2026 | |
| 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 (11 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jul 16, 2026 | Annual reports | 1339136 | Annual report 2025 | — | |
| Jun 17, 2025 | Annual reports | 1298170 | Annual report 2024 | — | |
| Jul 15, 2024 | Annual reports | 1247440 | Annual report 2023 | — | |
| Jul 17, 2023 | Annual reports | 1193638 | Annual report 2022 | — | |
| Jul 13, 2022 | Annual reports | 1117483 | Annual report 2021 | — | |
| Jul 13, 2021 | Annual reports | 1065704 | Annual report 2020 | — | |
| Jul 14, 2020 | Annual reports | 982819 | Annual report 2019 | — | |
| Jul 10, 2019 | Annual reports | 959173 | Annual report 2018 | — | |
| Jul 13, 2018 | Annual reports | 944609 | Annual report 2017 | — | |
| Sep 27, 2017 | Annual reports | 883986 | Annual report 2016 | — | |
| Nov 16, 2016 | Annual reports | 866474 | 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.