California State Prison Solano
Active WDID 5S48I004100 Vacaville, Solano County Region 5S · Central Valley (Sacramento)
At a glance
- Permit Evidence: SMARTS record
- Active Industrial
- Notice of Intent (WDID code I) · Permits and applications
- Location Evidence: facility-reported
- Vacaville, Solano County
- Region 5S · Central Valley (Sacramento) · Location · Statewide map
- Receiving water
- Tributary Ditch to Union Creek (as reported by the facility)
- Evidence: not confirmed 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; 0 on the 2026 303(d) list
- Proximity only; not a discharge pathway · Nearby waterbodies
- Monitoring results Evidence: facility-reported
- 364 distinct results, 3 reporting years (2015 to 2017)
- Most recent sample Mar 22, 2018 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 0 inspections · 11 violation records · 9 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
- 38.332448, -121.970469
- 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
- 2100 Peabody Rd, Vacaville 95687
- Regional Water Board
- 5S — Central Valley (Sacramento)
HUC12 watershed Evidence: spatial
- Barker Slough HUC12 180201630603
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
- California State Prison Solano
- Primary industry (SIC)
- 3499-Fabricated Metal Products, NEC
- Secondary SIC
- 3272-Concrete Products, Except Block and Brick
- Application ID
- 202025
- NOI processed
- Apr 06, 1992
- Last certified
- Jul 09, 2024
- Facility size
- 222 Acres
- Impervious area
- 77 %
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 202025 | Industrial | Active | Apr 06, 1992 | — | Jul 09, 2024 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Tributary Ditch to Union 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 |
|---|---|---|---|
| Old Alamo Creek (Solano County) CAR5111000020090108165859 | 754 m | not listed | 0 |
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.
364 distinct measurements across 7 parameters, most recent sample Mar 22, 2018.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2017 | 70 | 7 | 0 | Mar 01, 2018 | Mar 22, 2018 |
| 2016 | 126 | 7 | 0 | Nov 20, 2016 | Mar 24, 2017 |
| 2015 | 168 | 7 | 0 | Dec 13, 2015 | Apr 27, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Aluminum, Total | mg/L | 52 | 10 | Dec 13, 2015 | Mar 22, 2018 | Results |
| Iron, Total | mg/L | 52 | 10 | Dec 13, 2015 | Mar 22, 2018 | Results |
| Nitrite Plus Nitrate (as N) | mg/L | 52 | 4 | Dec 13, 2015 | Mar 22, 2018 | Results |
| Oil and Grease | mg/L | 52 | 52 | Dec 13, 2015 | Mar 22, 2018 | Results |
| pH | SU | 52 | 16 | Dec 13, 2015 | Mar 22, 2018 | Results |
| Total Suspended Solids (TSS) | mg/L | 52 | 11 | Dec 13, 2015 | Mar 22, 2018 | Results |
| Zinc, Total | mg/L | 52 | 10 | Dec 13, 2015 | Mar 22, 2018 | Results |
All results (364 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Mar 22, 2018 | Aluminum, Total | DNQ 3.14 | mg/L | Effluent | Qualifying Storm Event | A3113B | 1002876 | |
| Mar 22, 2018 | Aluminum, Total | DNQ 2.33 | mg/L | Effluent | Qualifying Storm Event | A3113B | 1002876 | |
| Mar 22, 2018 | Aluminum, Total | DNQ 14.4 | mg/L | Effluent | Qualifying Storm Event | A3113B | 1002876 | |
| Mar 22, 2018 | Aluminum, Total | DNQ 21.3 | mg/L | Effluent | Qualifying Storm Event | A3113B | 1002876 | |
| Mar 22, 2018 | Aluminum, Total | DNQ 21.7 | mg/L | Effluent | Qualifying Storm Event | A3113B | 1002876 | |
| Mar 22, 2018 | Iron, Total | DNQ 3.71 | mg/L | Effluent | Qualifying Storm Event | A3111B | 1002876 | |
| Mar 22, 2018 | Iron, Total | DNQ 2.91 | mg/L | Effluent | Qualifying Storm Event | A3111B | 1002876 | |
| Mar 22, 2018 | Iron, Total | DNQ 12.4 | mg/L | Effluent | Qualifying Storm Event | A3111B | 1002876 | |
| Mar 22, 2018 | Iron, Total | DNQ 26.3 | mg/L | Effluent | Qualifying Storm Event | A3111B | 1002876 | |
| Mar 22, 2018 | Iron, Total | DNQ 30.7 | mg/L | Effluent | Qualifying Storm Event | A3111B | 1002876 | |
| Mar 22, 2018 | Nitrite Plus Nitrate (as N) | 1.54 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1002876 | |
| Mar 22, 2018 | Nitrite Plus Nitrate (as N) | 1.23 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1002876 | |
| Mar 22, 2018 | Nitrite Plus Nitrate (as N) | 2.53 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1002876 | |
| Mar 22, 2018 | Nitrite Plus Nitrate (as N) | 2.28 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1002876 | |
| Mar 22, 2018 | Nitrite Plus Nitrate (as N) | 1.12 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1002876 | |
| Mar 22, 2018 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1002876 | |
| Mar 22, 2018 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1002876 | |
| Mar 22, 2018 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1002876 | |
| Mar 22, 2018 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1002876 | |
| Mar 22, 2018 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1002876 | |
| Mar 22, 2018 | pH | 7.7 | SU | Effluent | Qualifying Storm Event | pH_Field | 1002876 | |
| Mar 22, 2018 | pH | 7.6 | SU | Effluent | Qualifying Storm Event | pH_Field | 1002876 | |
| Mar 22, 2018 | pH | 7.6 | SU | Effluent | Qualifying Storm Event | pH_Field | 1002876 | |
| Mar 22, 2018 | pH | 7.3 | SU | Effluent | Qualifying Storm Event | pH_Field | 1002876 | |
| Mar 22, 2018 | pH | 7.4 | SU | Effluent | Qualifying Storm Event | pH_Field | 1002876 | |
| Mar 22, 2018 | Total Suspended Solids (TSS) | 39 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1002876 | |
| Mar 22, 2018 | Total Suspended Solids (TSS) | 30 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1002876 | |
| Mar 22, 2018 | Total Suspended Solids (TSS) | 159 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1002876 | |
| Mar 22, 2018 | Total Suspended Solids (TSS) | 284 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1002876 | |
| Mar 22, 2018 | Total Suspended Solids (TSS) | 241 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1002876 | |
| Mar 22, 2018 | Zinc, Total | DNQ .273 | mg/L | Effluent | Qualifying Storm Event | A3111B | 1002876 | |
| Mar 22, 2018 | Zinc, Total | DNQ .318 | mg/L | Effluent | Qualifying Storm Event | A3111B | 1002876 | |
| Mar 22, 2018 | Zinc, Total | DNQ .259 | mg/L | Effluent | Qualifying Storm Event | A3111B | 1002876 | |
| Mar 22, 2018 | Zinc, Total | DNQ 182 | mg/L | Effluent | Qualifying Storm Event | A3111B | 1002876 | |
| Mar 22, 2018 | Zinc, Total | DNQ .114 | mg/L | Effluent | Qualifying Storm Event | A3111B | 1002876 | |
| Mar 01, 2018 | Aluminum, Total | DNQ .223 | mg/L | Effluent | Qualifying Storm Event | A3113B | 994993 | |
| Mar 01, 2018 | Aluminum, Total | DNQ .14 | mg/L | Effluent | Qualifying Storm Event | A3113B | 994993 | |
| Mar 01, 2018 | Aluminum, Total | DNQ .252 | mg/L | Effluent | Qualifying Storm Event | A3113B | 994993 | |
| Mar 01, 2018 | Aluminum, Total | DNQ .652 | mg/L | Effluent | Qualifying Storm Event | A3113B | 994993 | |
| Mar 01, 2018 | Aluminum, Total | DNQ 1.9 | mg/L | Effluent | Qualifying Storm Event | A3113B | 994993 | |
| Mar 01, 2018 | Iron, Total | DNQ .472 | mg/L | Effluent | Qualifying Storm Event | A3111B | 994993 | |
| Mar 01, 2018 | Iron, Total | DNQ .31 | mg/L | Effluent | Qualifying Storm Event | A3111B | 994993 | |
| Mar 01, 2018 | Iron, Total | DNQ .294 | mg/L | Effluent | Qualifying Storm Event | A3111B | 994993 | |
| Mar 01, 2018 | Iron, Total | DNQ 1.06 | mg/L | Effluent | Qualifying Storm Event | A3111B | 994993 | |
| Mar 01, 2018 | Iron, Total | DNQ 2.67 | mg/L | Effluent | Qualifying Storm Event | A3111B | 994993 | |
| Mar 01, 2018 | Nitrite Plus Nitrate (as N) | 2.61 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 994993 | |
| Mar 01, 2018 | Nitrite Plus Nitrate (as N) | 2.19 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 994993 | |
| Mar 01, 2018 | Nitrite Plus Nitrate (as N) | 9.45 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 994993 | |
| Mar 01, 2018 | Nitrite Plus Nitrate (as N) | 3.81 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 994993 | |
| Mar 01, 2018 | Nitrite Plus Nitrate (as N) | 1.57 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 994993 |
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 | 11 | 11 Violation · 0 Potential (preliminary) · 0 Dismissed | Mar 27, 2000 – Jan 01, 2019 | Oct 21, 2026 | All violations |
| Enforcement actions | 9 | 9 issued · 0 draft · 0 withdrawn, rescinded or superseded | Mar 27, 2000 – Feb 13, 2019 | Oct 21, 2026 | All actions |
| 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 (31 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Mar 09, 2026 | Annual reports | 1335676 | Annual report 2025 | — | |
| Apr 01, 2025 | Annual reports | 1294508 | Annual report 2024 | — | |
| Jul 08, 2024 | Annual reports | 1243611 | Annual report 2023 | — | |
| Oct 05, 2023 | Annual reports | 1189633 | Annual report 2022 | — | |
| Jul 11, 2022 | Annual reports | 1113036 | Annual report 2021 | — | |
| Jul 12, 2021 | Annual reports | 1069061 | Annual report 2020 | — | |
| Jul 09, 2020 | Annual reports | 986347 | Annual report 2019 | — | |
| Jul 12, 2019 | Annual reports | 953919 | Annual report 2018 | — | |
| Feb 13, 2019 | Enforcement actions | 432976 | NOV (Notice of Violation) | Historical | |
| Jan 01, 2019 | Violations | 869821 | Late Report | Violation | Report |
| Jul 10, 2018 | Annual reports | 939337 | Annual report 2017 | — | |
| Feb 23, 2018 | Enforcement actions | 429220 | NOV (Notice of Violation) | Active | |
| Jan 01, 2018 | Violations | 866322 | Late Report | Violation | Report |
| Jul 13, 2017 | Annual reports | 878601 | Annual report 2016 | — | |
| Jul 07, 2016 | Annual reports | 847222 | Annual report 2015 | — | |
| Nov 21, 2014 | Enforcement actions | 417202 | 13267 Letter/Order (Water Code section 13267 letter or order) | Active | |
| Aug 15, 2014 | Enforcement actions | 416516 | 1st NNC - AR (First Notice of Non-Compliance (annual report)) | Historical | |
| Jul 01, 2014 | Violations | 854865 | Late Report | Violation | Report |
| Jul 01, 2014 | Violations | 855425 | Deficient BMP Implementation | Violation | Report |
| Jul 01, 2013 | Violations | 855426 | Deficient BMP Implementation | Violation | Report |
| Jul 01, 2012 | Violations | 855427 | Deficient BMP Implementation | Violation | Report |
| Mar 23, 2012 | Enforcement actions | 408408 | 13267 Letter/Order (Water Code section 13267 letter or order) | Historical | |
| Jun 30, 2011 | Violations | 847711 | Deficient BMP Implementation | Violation | Report |
| Oct 23, 2009 | Enforcement actions | 401728 | SEL (Staff Enforcement Letter) | Historical | |
| Jul 01, 2009 | Violations | 841568 | 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.