Sierra Chemical Co
Active WDID 5S57I014812 West Sacramento, Yolo 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
- West Sacramento, Yolo County
- Region 5S · Central Valley (Sacramento) · Location · Statewide map
- 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
- 75 distinct results, 5 reporting years (2015 to 2025)
- Most recent sample Apr 01, 2026 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 4 inspections · 2 violation records · 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
- 38.58052, -121.562131
- 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
- 788 Northport Dr, West Sacramento 95691
- Regional Water Board
- 5S — Central Valley (Sacramento)
HUC12 watershed Evidence: spatial
- Toe Drain-Cache Slough HUC12 180201630606
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
- Sierra Chemical Co
- Primary industry (SIC)
- 2899-Chemicals and Chemical Preparations, NEC
- Application ID
- 203049
- NOI processed
- Dec 07, 1998
- Last certified
- Aug 14, 2015
- Facility size
- 1 Acres
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 203049 | Industrial | Active | Dec 07, 1998 | — | Aug 14, 2015 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Yolo Bypass
- 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 |
|---|---|---|---|
| Toe Drain (in Delta Waterways, northwestern portion) CAR5100000020080821000818 | 540 m | listed | 1 |
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.
75 distinct measurements across 6 parameters, most recent sample Apr 01, 2026.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2025 | 12 | 3 | 0 | Oct 02, 2025 | Apr 01, 2026 |
| 2024 | 6 | 3 | 0 | Nov 12, 2024 | Feb 07, 2025 |
| 2019 | 6 | 3 | 0 | Nov 27, 2019 | Dec 23, 2019 |
| 2016 | 21 | 6 | 0 | Mar 22, 2016 | Mar 22, 2017 |
| 2015 | 30 | 6 | 0 | Feb 09, 2015 | May 20, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Oil and Grease | mg/L | 20 | 20 | Feb 09, 2015 | Apr 01, 2026 | Results |
| pH | SU | 20 | 0 | Feb 09, 2015 | Apr 01, 2026 | Results |
| Total Suspended Solids (TSS) | mg/L | 20 | 6 | Feb 09, 2015 | Apr 01, 2026 | Results |
| Electrical Conductivity @ 25 Deg. C | umhos/cm | 5 | 0 | Feb 09, 2015 | Mar 22, 2016 | Results |
| Total Dissolved Solids (TDS) | mg/L | 5 | 0 | Feb 09, 2015 | Mar 22, 2016 | Results |
| Total Organic Carbon (TOC) | mg/L | 5 | 2 | Feb 09, 2015 | Mar 22, 2016 | Results |
All results (75 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Apr 01, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1371191 | |
| Apr 01, 2026 | pH | 6.6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1371191 | |
| Apr 01, 2026 | Total Suspended Solids (TSS) | 2.4 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1371191 | |
| Feb 18, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1371191 | |
| Feb 18, 2026 | pH | 6.8 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1371191 | |
| Feb 18, 2026 | Total Suspended Solids (TSS) | 12 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1371191 | |
| Dec 29, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1371191 | |
| Dec 29, 2025 | pH | 6.3 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1371191 | |
| Dec 29, 2025 | Total Suspended Solids (TSS) | 14.4 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1371191 | |
| Oct 02, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1371191 | |
| Oct 02, 2025 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1371191 | |
| Oct 02, 2025 | Total Suspended Solids (TSS) | 23.2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1371191 | |
| Feb 07, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1329981 | |
| Feb 07, 2025 | pH | 6.2 | SU | Effluent | Qualifying Storm Event | A4500HB | 1329981 | |
| Feb 07, 2025 | Total Suspended Solids (TSS) | 10.4 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1329981 | |
| Nov 12, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1329981 | |
| Nov 12, 2024 | pH | 4.5 | SU | Effluent | Qualifying Storm Event | A4500HB | 1329981 | |
| Nov 12, 2024 | Total Suspended Solids (TSS) | 11 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1329981 | |
| Dec 23, 2019 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1095779 | |
| Dec 23, 2019 | pH | 6.7 | SU | Effluent | Qualifying Storm Event | A4500HB | 1095779 | |
| Dec 23, 2019 | Total Suspended Solids (TSS) | 3 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1095779 | |
| Nov 27, 2019 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1095779 | |
| Nov 27, 2019 | pH | 6.9 | SU | Effluent | Qualifying Storm Event | A4500HB | 1095779 | |
| Nov 27, 2019 | Total Suspended Solids (TSS) | 3 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1095779 | |
| Mar 22, 2017 | Oil and Grease | ND | mg/L | Effluent | Non-Storm Water Discharge Event | E1664A | 975539 | |
| Mar 22, 2017 | pH | 7.6 | SU | Effluent | Non-Storm Water Discharge Event | A4500HB | 975539 | |
| Mar 22, 2017 | Total Suspended Solids (TSS) | 3 | mg/L | Effluent | Non-Storm Water Discharge Event | A2540D | 975539 | |
| Jan 10, 2017 | Oil and Grease | ND | mg/L | Effluent | Non-Storm Water Discharge Event | E1664A | 975539 | |
| Jan 10, 2017 | pH | 7.2 | SU | Effluent | Non-Storm Water Discharge Event | A4500HB | 975539 | |
| Jan 10, 2017 | Total Suspended Solids (TSS) | 4 | mg/L | Effluent | Non-Storm Water Discharge Event | A2540D | 975539 | |
| Nov 29, 2016 | Oil and Grease | ND | mg/L | Effluent | Non-Storm Water Discharge Event | E1664A | 975539 | |
| Nov 29, 2016 | pH | 6.9 | SU | Effluent | Non-Storm Water Discharge Event | A4500HB | 975539 | |
| Nov 29, 2016 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Non-Storm Water Discharge Event | A2540D | 975539 | |
| Oct 14, 2016 | Oil and Grease | ND | mg/L | Effluent | Non-Storm Water Discharge Event | E1664A | 975539 | |
| Oct 14, 2016 | pH | 7 | SU | Effluent | Non-Storm Water Discharge Event | A4500HB | 975539 | |
| Oct 14, 2016 | Total Suspended Solids (TSS) | 34 | mg/L | Effluent | Non-Storm Water Discharge Event | A2540D | 975539 | |
| May 20, 2016 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 873150 | |
| May 20, 2016 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 873136 | |
| May 20, 2016 | Oil and Grease | ND | mg/L | Effluent | Non-Storm Water Discharge Event | E1664A | 975539 | |
| May 20, 2016 | pH | 7.01 | SU | Effluent | Qualifying Storm Event | A4500HB | 873150 | |
| May 20, 2016 | pH | 7.01 | SU | Effluent | Qualifying Storm Event | A4500HB | 873136 | |
| May 20, 2016 | pH | 7 | SU | Effluent | Non-Storm Water Discharge Event | A4500HB | 975539 | |
| May 20, 2016 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 873150 | |
| May 20, 2016 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 873136 | |
| May 20, 2016 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Non-Storm Water Discharge Event | A2540D | 975539 | |
| Mar 22, 2016 | Electrical Conductivity @ 25 Deg. C | 89 | umhos/cm | Effluent | Non-Storm Water Discharge Event | A2510B | 871638 | |
| Mar 22, 2016 | Electrical Conductivity @ 25 Deg. C | 89 | umhos/cm | Effluent | Non-Storm Water Discharge Event | E120.1 | 975539 | |
| Mar 22, 2016 | Oil and Grease | ND | mg/L | Effluent | Non-Storm Water Discharge Event | E1664A | 871638 | |
| Mar 22, 2016 | Oil and Grease | ND | mg/L | Effluent | Non-Storm Water Discharge Event | E1664A | 975539 | |
| Mar 22, 2016 | pH | 7.33 | SU | Effluent | Non-Storm Water Discharge Event | A4500HB | 871638 |
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 02, 1999 – Dec 10, 2002 | Oct 21, 2026 | All violations |
| Enforcement actions | 1 | 1 issued · 0 draft · 0 withdrawn, rescinded or superseded | Jan 23, 2003 – Jan 23, 2003 | Oct 21, 2026 | All actions |
| Inspections | 4 | inspections, not findings | Dec 10, 2002 – Apr 07, 2026 | Oct 21, 2026 | All inspections |
| Annual reports | 10 | 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 (17 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Apr 10, 2026 | Annual reports | 1335190 | Annual report 2025 | — | |
| Apr 07, 2026 | Inspections | 2070673 | B Type compliance | Finalized | Additional Info Required |
| Apr 23, 2025 | Annual reports | 1293993 | Annual report 2024 | — | |
| Jan 25, 2023 | Annual reports | 1189066 | Annual report 2022 | — | |
| Jul 12, 2021 | Annual reports | 1112425 | Annual report 2021 | — | |
| Jun 23, 2020 | Annual reports | 1068429 | Annual report 2020 | — | |
| Oct 15, 2019 | Annual reports | 985668 | Annual report 2019 | — | |
| Apr 08, 2019 | Annual reports | 953210 | Annual report 2018 | — | |
| Jun 14, 2018 | Annual reports | 938626 | Annual report 2017 | — | |
| Jul 12, 2017 | Annual reports | 877851 | Annual report 2016 | — | |
| Jun 07, 2016 | Annual reports | 839212 | Annual report 2015 | — | |
| Jan 16, 2014 | Inspections | 2021766 | B Type compliance | — | Follow-up Inspection Needed |
| Feb 07, 2008 | Inspections | 1533067 | B Type compliance | — | |
| Jan 23, 2003 | Enforcement actions | 244206 | NOV (Notice of Violation) | Historical | |
| Dec 10, 2002 | Inspections | 329141 | B Type compliance | — | |
| Dec 10, 2002 | Violations | 226280 | Deficient BMP Implementation | Violation | Inspection |
| Jul 02, 1999 | Violations | 170762 | 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.