Simonton Windows
Active WDID 5S48I021445 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
- Alamo 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
- 157 distinct results, 11 reporting years (2015 to 2025)
- Most recent sample Feb 11, 2026 · 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
- 38.37982, -121.95645
- 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
- 2019 E Monte Vista Ave, Vacaville 95868
- Regional Water Board
- 5S — Central Valley (Sacramento)
HUC12 watershed Evidence: spatial
- Upper Ulatis Creek HUC12 180201630503
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
- Simonton Windows
- Primary industry (SIC)
- 3089-Plastics Products, NEC
- Application ID
- 340935
- NOI processed
- Feb 15, 2008
- Last certified
- Jun 26, 2026
- Facility size
- 23.4 Acres
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 340935 | Industrial | Active | Feb 15, 2008 | — | Jun 26, 2026 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Alamo Creek
- Discharges directly / indirectly
- N / 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 (3)
- C2 candidate in another or unknown Regional Board
- C3 facility HUC12 not corroborated
- 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.
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.
157 distinct measurements across 4 parameters, most recent sample Feb 11, 2026.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2025 | 12 | 3 | 0 | Oct 13, 2025 | Feb 11, 2026 |
| 2024 | 11 | 3 | 0 | Nov 20, 2024 | Jan 31, 2025 |
| 2023 | 12 | 3 | 0 | Jan 31, 2024 | Feb 07, 2024 |
| 2022 | 15 | 3 | 0 | Nov 01, 2022 | Feb 23, 2023 |
| 2021 | 6 | 3 | 0 | Dec 13, 2021 | Dec 13, 2021 |
| 2020 | 12 | 3 | 0 | Jan 04, 2021 | Feb 11, 2021 |
| 2019 | 9 | 3 | 0 | Dec 04, 2019 | Mar 24, 2020 |
| 2018 | 12 | 3 | 0 | Feb 01, 2019 | Feb 25, 2019 |
| 2017 | 12 | 3 | 0 | Nov 15, 2017 | Jan 08, 2018 |
| 2016 | 24 | 3 | 0 | Nov 23, 2016 | Mar 20, 2017 |
| 2015 | 32 | 4 | 0 | Nov 02, 2015 | Mar 04, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Oil and Grease | mg/L | 50 | 34 | Nov 02, 2015 | Feb 11, 2026 | Results |
| pH | SU | 50 | 0 | Nov 02, 2015 | Feb 11, 2026 | Results |
| Total Suspended Solids (TSS) | mg/L | 49 | 0 | Nov 02, 2015 | Feb 11, 2026 | Results |
| Chemical Oxygen Demand (COD) | mg/L | 8 | 1 | Nov 02, 2015 | Mar 04, 2016 | Results |
All results (157 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Feb 11, 2026 | Oil and Grease | ND 1.7 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1367988 | |
| Feb 11, 2026 | Oil and Grease | 2.4 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1367988 | |
| Feb 11, 2026 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1367988 | |
| Feb 11, 2026 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1367988 | |
| Feb 11, 2026 | Total Suspended Solids (TSS) | 5.3 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1367988 | |
| Feb 11, 2026 | Total Suspended Solids (TSS) | 160 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1367988 | |
| Oct 13, 2025 | Oil and Grease | 1.9 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1354613 | |
| Oct 13, 2025 | Oil and Grease | 2 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1354613 | |
| Oct 13, 2025 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1354613 | |
| Oct 13, 2025 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1354613 | |
| Oct 13, 2025 | Total Suspended Solids (TSS) | 9.6 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1354613 | |
| Oct 13, 2025 | Total Suspended Solids (TSS) | 91 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1354613 | |
| Jan 31, 2025 | Oil and Grease | ND 1.4 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1331216 | |
| Jan 31, 2025 | Oil and Grease | ND 1.4 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1331216 | |
| Jan 31, 2025 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1331216 | |
| Jan 31, 2025 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1331216 | |
| Jan 31, 2025 | Total Suspended Solids (TSS) | 3.9 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1331216 | |
| Jan 31, 2025 | Total Suspended Solids (TSS) | 18 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1331216 | |
| Nov 20, 2024 | Oil and Grease | ND 1.4 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1317079 | |
| Nov 20, 2024 | Oil and Grease | ND 1.4 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1317079 | |
| Nov 20, 2024 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1317079 | |
| Nov 20, 2024 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1317079 | |
| Nov 20, 2024 | Total Suspended Solids (TSS) | 19 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1317079 | |
| Feb 07, 2024 | Oil and Grease | ND 1.4 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1281658 | |
| Feb 07, 2024 | Oil and Grease | ND 1.4 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1281658 | |
| Feb 07, 2024 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1281658 | |
| Feb 07, 2024 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1281658 | |
| Feb 07, 2024 | Total Suspended Solids (TSS) | 18 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1281658 | |
| Feb 07, 2024 | Total Suspended Solids (TSS) | 7 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1281658 | |
| Jan 31, 2024 | Oil and Grease | ND 1.4 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1279301 | |
| Jan 31, 2024 | Oil and Grease | ND 1.4 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1279301 | |
| Jan 31, 2024 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1279301 | |
| Jan 31, 2024 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1279301 | |
| Jan 31, 2024 | Total Suspended Solids (TSS) | 9.1 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1279301 | |
| Jan 31, 2024 | Total Suspended Solids (TSS) | 14 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1279301 | |
| Feb 23, 2023 | Oil and Grease | ND .86 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1233639 | |
| Feb 23, 2023 | Oil and Grease | ND .86 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1233639 | |
| Feb 23, 2023 | pH | 7 | SU | Effluent | Qualifying Storm Event | A4500HB | 1233639 | |
| Feb 23, 2023 | pH | 7 | SU | Effluent | Qualifying Storm Event | A4500HB | 1233639 | |
| Feb 23, 2023 | Total Suspended Solids (TSS) | 9.7 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1233639 | |
| Feb 23, 2023 | Total Suspended Solids (TSS) | 72.3 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1233639 | |
| Nov 08, 2022 | Oil and Grease | 3.4 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1233899 | |
| Nov 08, 2022 | Oil and Grease | ND 1.4 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1233899 | |
| Nov 08, 2022 | pH | 7 | SU | Effluent | Qualifying Storm Event | A4500HB | 1233899 | |
| Nov 08, 2022 | pH | 7 | SU | Effluent | Qualifying Storm Event | A4500HB | 1233899 | |
| Nov 08, 2022 | Total Suspended Solids (TSS) | 66.4 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1233899 | |
| Nov 08, 2022 | Total Suspended Solids (TSS) | 7.8 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1233899 | |
| Nov 01, 2022 | Oil and Grease | ND 1.4 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1233893 | |
| Nov 01, 2022 | pH | 7 | SU | Effluent | Qualifying Storm Event | A4500HB | 1233893 | |
| Nov 01, 2022 | Total Suspended Solids (TSS) | 16 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1233893 |
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 02, 2008 – Jul 02, 2008 | Oct 21, 2026 | All violations |
| Enforcement actions | 1 | 1 issued · 0 draft · 0 withdrawn, rescinded or superseded | Aug 01, 2008 – Aug 01, 2008 | Oct 21, 2026 | All actions |
| Inspections | 1 | inspections, not findings | Apr 17, 2014 – Apr 17, 2014 | 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 |
|---|---|---|---|---|---|
| Jun 26, 2026 | Annual reports | 1336515 | Annual report 2025 | — | |
| Jun 23, 2025 | Annual reports | 1295380 | Annual report 2024 | — | |
| Jun 11, 2024 | Annual reports | 1244524 | Annual report 2023 | — | |
| Jun 12, 2023 | Annual reports | 1190587 | Annual report 2022 | — | |
| Jul 11, 2022 | Annual reports | 1114081 | Annual report 2021 | — | |
| Jun 21, 2021 | Annual reports | 1070155 | Annual report 2020 | — | |
| Jun 24, 2020 | Annual reports | 987522 | Annual report 2019 | — | |
| Jul 09, 2019 | Annual reports | 955134 | Annual report 2018 | — | |
| Jun 18, 2018 | Annual reports | 940553 | Annual report 2017 | — | |
| May 18, 2017 | Annual reports | 879890 | Annual report 2016 | — | |
| Jul 08, 2016 | Annual reports | 844129 | Annual report 2015 | — | |
| Apr 17, 2014 | Inspections | 2022012 | B Type compliance | — | No Further Action |
| Aug 01, 2008 | Enforcement actions | 353700 | NNC (Notice of Non-Compliance) | Historical | |
| Jul 02, 2008 | Violations | 783742 | Late 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.