Thatcher Company of California Sacramento
Active WDID 5S34I026405 Sacramento, Sacramento 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
- Sacramento, Sacramento County
- Region 5S · Central Valley (Sacramento) · Location · Statewide map
- Receiving water
- City of Sacramento Storm Drain System (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; 1 on the 2026 303(d) list
- Proximity only; not a discharge pathway · Nearby waterbodies
- Monitoring results Evidence: facility-reported
- 199 distinct results, 10 reporting years (2016 to 2025)
- Most recent sample Apr 21, 2026 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 2 inspections · 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
- 38.521625, -121.383019
- 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
- 8625 Unsworth Avenue, Sacramento 95828
- Regional Water Board
- 5S — Central Valley (Sacramento)
HUC12 watershed Evidence: spatial
- Upper Morrison Creek HUC12 180201630402
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
- Thatcher Company of California, Inc.
- Primary industry (SIC)
- 2819-Industrial Inorganic Chemicals, NEC
- Secondary SIC
- 2869-Industrial Organic Chemicals, NEC
- Application ID
- 468489
- NOI processed
- Jan 26, 2016
- Last certified
- Oct 06, 2026
- Facility size
- 11.38 Acres
- Impervious area
- 91 %
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 468489 | Industrial | Active | Jan 26, 2016 | — | Oct 06, 2026 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- City of Sacramento Storm Drain System
- 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 |
|---|---|---|---|
| Morrison Creek CAR5191100019980817123042 | 308 m | listed | 5 |
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.
199 distinct measurements across 9 parameters, most recent sample Apr 21, 2026.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2025 | 36 | 6 | 0 | Nov 13, 2025 | Apr 21, 2026 |
| 2024 | 24 | 6 | 0 | Nov 22, 2024 | Feb 13, 2025 |
| 2023 | 24 | 6 | 0 | Dec 18, 2023 | Jan 17, 2024 |
| 2022 | 30 | 9 | 0 | Dec 27, 2022 | Mar 28, 2023 |
| 2021 | 6 | 6 | 0 | Dec 13, 2021 | Dec 13, 2021 |
| 2020 | 7 | 7 | 0 | Mar 10, 2021 | Mar 10, 2021 |
| 2019 | 12 | 6 | 0 | Jan 16, 2020 | Mar 16, 2020 |
| 2018 | 18 | 6 | 0 | Nov 29, 2018 | Feb 04, 2019 |
| 2017 | 18 | 6 | 0 | Nov 16, 2017 | Mar 01, 2018 |
| 2016 | 24 | 6 | 0 | Oct 28, 2016 | Feb 09, 2017 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Aluminum, Total | mg/L | 32 | 0 | Oct 28, 2016 | Apr 21, 2026 | Results |
| Iron, Total | mg/L | 32 | 0 | Oct 28, 2016 | Apr 21, 2026 | Results |
| Nitrite Plus Nitrate (as N) | mg/L | 32 | 3 | Oct 28, 2016 | Apr 21, 2026 | Results |
| Oil and Grease | mg/L | 32 | 26 | Oct 28, 2016 | Apr 21, 2026 | Results |
| pH | SU | 32 | 0 | Oct 28, 2016 | Apr 21, 2026 | Results |
| Total Suspended Solids (TSS) | mg/L | 32 | 1 | Oct 28, 2016 | Apr 21, 2026 | Results |
| Phosphorus, Total (as P) | mg/L | 5 | 0 | Mar 10, 2021 | Mar 28, 2023 | Results |
| Lead, Total | mg/L | 1 | 1 | Dec 27, 2022 | Dec 27, 2022 | Results |
| Zinc, Total | mg/L | 1 | 0 | Dec 27, 2022 | Dec 27, 2022 | Results |
All results (199 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Apr 21, 2026 | Aluminum, Total | .805 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1372792 | |
| Apr 21, 2026 | Iron, Total | .799 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1372792 | |
| Apr 21, 2026 | Nitrite Plus Nitrate (as N) | .5 | mg/L | Effluent | Qualifying Storm Event | A4500F | 1372792 | |
| Apr 21, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1372792 | |
| Apr 21, 2026 | pH | 7.12 | SU | Effluent | Qualifying Storm Event | pH_Field | 1372792 | |
| Apr 21, 2026 | Total Suspended Solids (TSS) | 15.2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1372792 | |
| Apr 13, 2026 | Aluminum, Total | .225 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1372139 | |
| Apr 13, 2026 | Iron, Total | .272 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1372139 | |
| Apr 13, 2026 | Nitrite Plus Nitrate (as N) | .34 | mg/L | Effluent | Qualifying Storm Event | A4500F | 1372139 | |
| Apr 13, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1372139 | |
| Apr 13, 2026 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Field | 1372139 | |
| Apr 13, 2026 | Total Suspended Solids (TSS) | 4.8 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1372139 | |
| Apr 01, 2026 | Aluminum, Total | 1.96 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1371343 | |
| Apr 01, 2026 | Iron, Total | 2.32 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1371343 | |
| Apr 01, 2026 | Nitrite Plus Nitrate (as N) | .91 | mg/L | Effluent | Qualifying Storm Event | A4500F | 1371343 | |
| Apr 01, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1371343 | |
| Apr 01, 2026 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Field | 1371343 | |
| Apr 01, 2026 | Total Suspended Solids (TSS) | 66 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1371343 | |
| Feb 16, 2026 | Aluminum, Total | .415 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1366976 | |
| Feb 16, 2026 | Iron, Total | .602 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1366976 | |
| Feb 16, 2026 | Nitrite Plus Nitrate (as N) | .64 | mg/L | Effluent | Qualifying Storm Event | A4500F | 1366976 | |
| Feb 16, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1366976 | |
| Feb 16, 2026 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Field | 1366976 | |
| Feb 16, 2026 | Total Suspended Solids (TSS) | 12.8 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1366976 | |
| Dec 24, 2025 | Aluminum, Total | 1.33 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1364115 | |
| Dec 24, 2025 | Iron, Total | 1.18 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1364115 | |
| Dec 24, 2025 | Nitrite Plus Nitrate (as N) | .55 | mg/L | Effluent | Qualifying Storm Event | A4500F | 1364115 | |
| Dec 24, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1364115 | |
| Dec 24, 2025 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Field | 1364115 | |
| Dec 24, 2025 | Total Suspended Solids (TSS) | 24.6 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1364115 | |
| Nov 13, 2025 | Aluminum, Total | .94 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1360530 | |
| Nov 13, 2025 | Iron, Total | .959 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1360530 | |
| Nov 13, 2025 | Nitrite Plus Nitrate (as N) | .67 | mg/L | Effluent | Qualifying Storm Event | E353.2 | 1360530 | |
| Nov 13, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1360530 | |
| Nov 13, 2025 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Field | 1360530 | |
| Nov 13, 2025 | Total Suspended Solids (TSS) | 12.2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1360530 | |
| Feb 13, 2025 | Aluminum, Total | .44 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1324339 | |
| Feb 13, 2025 | Iron, Total | .44 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1324339 | |
| Feb 13, 2025 | Nitrite Plus Nitrate (as N) | .23 | mg/L | Effluent | Qualifying Storm Event | E353.2 | 1324339 | |
| Feb 13, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1324339 | |
| Feb 13, 2025 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Field | 1324339 | |
| Feb 13, 2025 | Total Suspended Solids (TSS) | 9.4 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1324339 | |
| Feb 04, 2025 | Aluminum, Total | .58 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1322179 | |
| Feb 04, 2025 | Iron, Total | .61 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1322179 | |
| Feb 04, 2025 | Nitrite Plus Nitrate (as N) | .45 | mg/L | Effluent | Qualifying Storm Event | E353.2 | 1322179 | |
| Feb 04, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1322179 | |
| Feb 04, 2025 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Field | 1322179 | |
| Feb 04, 2025 | Total Suspended Solids (TSS) | 12.8 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1322179 | |
| Dec 27, 2024 | Aluminum, Total | .36 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1318576 | |
| Dec 27, 2024 | Iron, Total | .49 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1318576 |
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 | Jan 01, 2021 – Jan 01, 2021 | Oct 21, 2026 | All violations |
| Enforcement actions | 1 | 1 issued · 0 draft · 0 withdrawn, rescinded or superseded | Mar 12, 2021 – Mar 12, 2021 | Oct 21, 2026 | All actions |
| Inspections | 2 | inspections, not findings | Oct 26, 2017 – Mar 30, 2022 | 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 (15 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jul 02, 2026 | Annual reports | 1339100 | Annual report 2025 | — | |
| Jul 01, 2025 | Annual reports | 1298132 | Annual report 2024 | — | |
| Jul 10, 2024 | Annual reports | 1247400 | Annual report 2023 | — | |
| Jul 14, 2023 | Annual reports | 1193597 | Annual report 2022 | — | |
| Jul 13, 2022 | Annual reports | 1117440 | Annual report 2021 | — | |
| Mar 30, 2022 | Inspections | 2055478 | Complaint | Finalized | Additional Info Required |
| Jul 13, 2021 | Annual reports | 1065658 | Annual report 2020 | — | |
| Mar 12, 2021 | Enforcement actions | 440398 | NOV (Notice of Violation) | Active | |
| Jan 01, 2021 | Violations | 876669 | Late Report | Violation | Report |
| Jul 10, 2020 | Annual reports | 982769 | Annual report 2019 | — | |
| Jul 11, 2019 | Annual reports | 959120 | Annual report 2018 | — | |
| Jun 29, 2018 | Annual reports | 944557 | Annual report 2017 | — | |
| Oct 26, 2017 | Inspections | 2035333 | B Type compliance | — | No Further Action |
| Jul 03, 2017 | Annual reports | 883950 | Annual report 2016 | — | |
| Jul 11, 2016 | Annual reports | 861544 | 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.