Ramos Oil Company Dixon
Terminated WDID 5S48I015394 Dixon, Solano County Region 5S · Central Valley (Sacramento)
At a glance
- Permit Evidence: SMARTS record
- Terminated Industrial
- Notice of Intent (WDID code I) · Permits and applications
- Location Evidence: facility-reported
- Dixon, Solano County
- Region 5S · Central Valley (Sacramento) · Location · Statewide map
- Receiving water
- Dixon Creek (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
- 63 distinct results, 10 reporting years (2015 to 2024)
- Most recent sample Jan 03, 2025 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 1 inspection · 2 violation records · 2 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
- 38.463529, -121.822257
- Precision
- 6 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
- 1900 N 1st St, Dixon 95620
- Regional Water Board
- 5S — Central Valley (Sacramento)
HUC12 watershed Evidence: spatial
- Tremont School HUC12 180201630602
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
- Terminated
- Operator
- Ramos Oil Co
- Primary industry (SIC)
- 5171-Petroleum Bulk Stations and Terminals
- Application ID
- 202046
- NOI processed
- Sep 24, 1999
- Termination effective
- Jul 15, 2025
- Last certified
- Aug 10, 2015
- Facility size
- 2.4 Acres
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 202046 | Industrial | Terminated | Sep 24, 1999 | Jul 15, 2025 | Aug 10, 2015 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Dixon Creek
- 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 (1)
- C1 name is only a prefix of official names
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.
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.
63 distinct measurements across 4 parameters, most recent sample Jan 03, 2025.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2024 | 6 | 3 | 0 | Nov 11, 2024 | Jan 03, 2025 |
| 2023 | 6 | 3 | 0 | Nov 06, 2023 | Jan 31, 2024 |
| 2022 | 6 | 3 | 0 | Nov 08, 2022 | Jan 14, 2023 |
| 2021 | 6 | 3 | 0 | Nov 09, 2021 | Mar 28, 2022 |
| 2020 | 6 | 3 | 0 | Dec 17, 2020 | Jan 27, 2021 |
| 2019 | 6 | 3 | 0 | Dec 13, 2019 | Jan 16, 2020 |
| 2018 | 3 | 3 | 0 | Nov 27, 2018 | Nov 27, 2018 |
| 2017 | 15 | 4 | 0 | Nov 16, 2017 | Mar 13, 2018 |
| 2016 | 6 | 3 | 0 | Oct 28, 2016 | Dec 15, 2016 |
| 2015 | 3 | 3 | 0 | Jan 04, 2016 | Jan 04, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Oil and Grease | mg/L | 20 | 4 | Jan 04, 2016 | Jan 03, 2025 | Results |
| pH | SU | 20 | 0 | Jan 04, 2016 | Jan 03, 2025 | Results |
| Total Suspended Solids (TSS) | mg/L | 20 | 0 | Jan 04, 2016 | Jan 03, 2025 | Results |
| Total Suspended Solids (TSS), Net Value | mg/L | 3 | 0 | Nov 16, 2017 | Mar 13, 2018 | Results |
All results (63 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Jan 03, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1318955 | |
| Jan 03, 2025 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1318955 | |
| Jan 03, 2025 | Total Suspended Solids (TSS) | 28 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1318955 | |
| Nov 11, 2024 | Oil and Grease | 1.7 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1315278 | |
| Nov 11, 2024 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1315278 | |
| Nov 11, 2024 | Total Suspended Solids (TSS) | 89 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1315278 | |
| Jan 31, 2024 | Oil and Grease | 2.4 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1275774 | |
| Jan 31, 2024 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1275774 | |
| Jan 31, 2024 | Total Suspended Solids (TSS) | 130 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1275774 | |
| Nov 06, 2023 | Oil and Grease | 1.6 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1268188 | |
| Nov 06, 2023 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1268188 | |
| Nov 06, 2023 | Total Suspended Solids (TSS) | 23 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1268188 | |
| Jan 14, 2023 | Oil and Grease | 2.7 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1223736 | |
| Jan 14, 2023 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1223736 | |
| Jan 14, 2023 | Total Suspended Solids (TSS) | 8 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1223736 | |
| Nov 08, 2022 | Oil and Grease | 1.9 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1216516 | |
| Nov 08, 2022 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1216516 | |
| Nov 08, 2022 | Total Suspended Solids (TSS) | 43 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1216516 | |
| Mar 28, 2022 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1180157 | |
| Mar 28, 2022 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1180157 | |
| Mar 28, 2022 | Total Suspended Solids (TSS) | 45 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1180157 | |
| Nov 09, 2021 | Oil and Grease | 3 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1169799 | |
| Nov 09, 2021 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1169799 | |
| Nov 09, 2021 | Total Suspended Solids (TSS) | 40 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1169799 | |
| Jan 27, 2021 | Oil and Grease | 3.3 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1144658 | |
| Jan 27, 2021 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1144658 | |
| Jan 27, 2021 | Total Suspended Solids (TSS) | 50 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1144658 | |
| Dec 17, 2020 | Oil and Grease | 2.2 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1138386 | |
| Dec 17, 2020 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1138386 | |
| Dec 17, 2020 | Total Suspended Solids (TSS) | 34 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1138386 | |
| Jan 16, 2020 | Oil and Grease | 1.6 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1099430 | |
| Jan 16, 2020 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1099430 | |
| Jan 16, 2020 | Total Suspended Solids (TSS) | 74 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1099430 | |
| Dec 13, 2019 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1096478 | |
| Dec 13, 2019 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1096478 | |
| Dec 13, 2019 | Total Suspended Solids (TSS) | 18 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1096478 | |
| Nov 27, 2018 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | A5220B | 1032022 | |
| Nov 27, 2018 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1032022 | |
| Nov 27, 2018 | Total Suspended Solids (TSS) | 34 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1032022 | |
| Mar 13, 2018 | Oil and Grease | 1 | mg/L | Effluent | Qualifying Storm Event | E1664A | 994471 | |
| Mar 13, 2018 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 994471 | |
| Mar 13, 2018 | Total Suspended Solids (TSS) | 19 | mg/L | Effluent | Qualifying Storm Event | A2540D | 994471 | |
| Mar 13, 2018 | Total Suspended Solids (TSS), Net Value | 19 | mg/L | Effluent | Qualifying Storm Event | A2540D | 994471 | |
| Mar 01, 2018 | Oil and Grease | 2.5 | mg/L | Effluent | Qualifying Storm Event | E1664A | 994471 | |
| Mar 01, 2018 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Field | 994471 | |
| Mar 01, 2018 | Total Suspended Solids (TSS) | 110 | mg/L | Effluent | Qualifying Storm Event | A2540D | 994471 | |
| Jan 08, 2018 | Oil and Grease | 1.1 | mg/L | Effluent | Qualifying Storm Event | E1664A | 994471 | |
| Jan 08, 2018 | pH | 7 | SU | Effluent | Qualifying Storm Event | A4500HB | 994471 | |
| Jan 08, 2018 | Total Suspended Solids (TSS) | 29 | mg/L | Effluent | Qualifying Storm Event | A2540D | 994471 | |
| Jan 08, 2018 | Total Suspended Solids (TSS), Net Value | 29 | mg/L | Effluent | Qualifying Storm Event | A2540D | 994471 |
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 | Jul 01, 2009 – Jun 10, 2011 | Oct 21, 2026 | All violations |
| Enforcement actions | 2 | 2 issued · 0 draft · 0 withdrawn, rescinded or superseded | Oct 23, 2009 – Mar 30, 2012 | Oct 21, 2026 | All actions |
| Inspections | 1 | inspections, not findings | Aug 24, 2011 – Aug 24, 2011 | Oct 21, 2026 | All inspections |
| Annual reports | 10 | certified reports (contents not shown) | 2015 – 2024 | 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 (15 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jul 10, 2025 | Annual reports | 1294520 | Annual report 2024 | — | |
| Jun 28, 2024 | Annual reports | 1243624 | Annual report 2023 | — | |
| Jun 27, 2023 | Annual reports | 1189646 | Annual report 2022 | — | |
| Jul 12, 2022 | Annual reports | 1113050 | Annual report 2021 | — | |
| Jul 13, 2021 | Annual reports | 1069075 | Annual report 2020 | — | |
| Jul 08, 2020 | Annual reports | 986361 | Annual report 2019 | — | |
| Jun 21, 2019 | Annual reports | 953933 | Annual report 2018 | — | |
| Jul 11, 2018 | Annual reports | 939351 | Annual report 2017 | — | |
| Jul 15, 2017 | Annual reports | 878615 | Annual report 2016 | — | |
| Jul 18, 2016 | Annual reports | 841805 | Annual report 2015 | — | |
| Mar 30, 2012 | Enforcement actions | 408430 | 13267 Letter/Order (Water Code section 13267 letter or order) | Historical | |
| Aug 24, 2011 | Inspections | 2012615 | B Type compliance | — | Follow-up Inspection Needed |
| Jun 10, 2011 | Violations | 847734 | Deficient BMP Implementation | Violation | Report |
| Oct 23, 2009 | Enforcement actions | 401733 | SEL (Staff Enforcement Letter) | Historical | |
| Jul 01, 2009 | Violations | 841573 | Deficient BMP Implementation | 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.