Pacific Ultrapower Chinese Station
Active WDID 5S55I010531 Jamestown, Tuolumne 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
- Jamestown, Tuolumne 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
- None
- Monitoring results Evidence: facility-reported
- 91 distinct results, 9 reporting years (2015 to 2025)
- Most recent sample Jan 05, 2026 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 1 inspection · 3 violation records · 3 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
- 37.87805, -120.46185
- 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
- 8755 Enterprise Dr, Jamestown 95327
- Regional Water Board
- 5S — Central Valley (Sacramento)
HUC12 watershed Evidence: spatial
- Six-bit Gulch HUC12 180400091204
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
- Pacific Ultrapower Chinese Station
- Primary industry (SIC)
- 4911-Electric Services
- Application ID
- 202792
- NOI processed
- Aug 25, 1993
- Last certified
- Mar 20, 2024
- Facility size
- 26 Acres
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 202792 | Industrial | Active | Aug 25, 1993 | — | Mar 20, 2024 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Six Bit 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.
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.
91 distinct measurements across 5 parameters, most recent sample Jan 05, 2026.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2025 | 5 | 5 | 0 | Jan 05, 2026 | Jan 05, 2026 |
| 2023 | 4 | 4 | 0 | Feb 19, 2024 | Feb 19, 2024 |
| 2022 | 8 | 4 | 0 | Dec 12, 2022 | Dec 30, 2022 |
| 2021 | 5 | 5 | 0 | Oct 23, 2021 | Oct 23, 2021 |
| 2020 | 5 | 5 | 0 | Jan 29, 2021 | Jan 29, 2021 |
| 2018 | 9 | 5 | 0 | Feb 10, 2019 | Mar 02, 2019 |
| 2017 | 5 | 5 | 0 | Mar 22, 2018 | Mar 22, 2018 |
| 2016 | 10 | 5 | 0 | Jan 08, 2017 | Apr 11, 2017 |
| 2015 | 40 | 4 | 0 | Nov 02, 2015 | Jan 18, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Iron, Total | mg/L | 21 | 0 | Nov 02, 2015 | Jan 05, 2026 | Results |
| Oil and Grease | mg/L | 21 | 13 | Nov 02, 2015 | Jan 05, 2026 | Results |
| pH | SU | 21 | 0 | Nov 02, 2015 | Jan 05, 2026 | Results |
| Total Suspended Solids (TSS) | mg/L | 21 | 4 | Nov 02, 2015 | Jan 05, 2026 | Results |
| Mercury, Total | ug/L | 7 | 5 | Jan 08, 2017 | Jan 05, 2026 | Results |
All results (91 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Jan 05, 2026 | Iron, Total | .73 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1369664 | |
| Jan 05, 2026 | Mercury, Total | < .024 | ug/L | Effluent | Qualifying Storm Event | E245.1 | 1369664 | |
| Jan 05, 2026 | Oil and Grease | < 1.4 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1369664 | |
| Jan 05, 2026 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Field | 1369664 | |
| Jan 05, 2026 | Total Suspended Solids (TSS) | 7.8 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1369664 | |
| Feb 19, 2024 | Iron, Total | .593 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1283686 | |
| Feb 19, 2024 | Oil and Grease | 1.4 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1283686 | |
| Feb 19, 2024 | pH | 6.5 | SU | Effluent | Qualifying Storm Event | pH_Field | 1283686 | |
| Feb 19, 2024 | Total Suspended Solids (TSS) | 7.3 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1283686 | |
| Dec 30, 2022 | Iron, Total | 2.62 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1226701 | |
| Dec 30, 2022 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1226701 | |
| Dec 30, 2022 | pH | 6.57 | SU | Effluent | Qualifying Storm Event | pH_Field | 1226701 | |
| Dec 30, 2022 | Total Suspended Solids (TSS) | 58 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1226701 | |
| Dec 12, 2022 | Iron, Total | 4.86 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1221717 | |
| Dec 12, 2022 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1221717 | |
| Dec 12, 2022 | pH | 6.57 | SU | Effluent | Qualifying Storm Event | pH_Field | 1221717 | |
| Dec 12, 2022 | Total Suspended Solids (TSS) | 63 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1221717 | |
| Oct 23, 2021 | Iron, Total | 11.6 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1170255 | |
| Oct 23, 2021 | Mercury, Total | .0491 | ug/L | Effluent | Qualifying Storm Event | E245.1 | 1170255 | |
| Oct 23, 2021 | Oil and Grease | 2.8 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1170255 | |
| Oct 23, 2021 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Field | 1170255 | |
| Oct 23, 2021 | Total Suspended Solids (TSS) | 102 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1170255 | |
| Jan 29, 2021 | Iron, Total | 18.4 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1142500 | |
| Jan 29, 2021 | Mercury, Total | ND | ug/L | Effluent | Qualifying Storm Event | E245.1 | 1142500 | |
| Jan 29, 2021 | Oil and Grease | 2.8 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1142500 | |
| Jan 29, 2021 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Field | 1142500 | |
| Jan 29, 2021 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 1142500 | |
| Mar 02, 2019 | Iron, Total | 5.18 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1052001 | |
| Mar 02, 2019 | Oil and Grease | 0 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1052001 | |
| Mar 02, 2019 | pH | 6.9 | SU | Effluent | Qualifying Storm Event | pH_Field | 1052001 | |
| Mar 02, 2019 | Total Suspended Solids (TSS) | 130 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1052001 | |
| Feb 10, 2019 | Iron, Total | 2.4 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1046132 | |
| Feb 10, 2019 | Mercury, Total | .0401 | ug/L | Effluent | Qualifying Storm Event | E245.1 | 1046132 | |
| Feb 10, 2019 | Oil and Grease | 3.4 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1046132 | |
| Feb 10, 2019 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Field | 1046132 | |
| Feb 10, 2019 | Total Suspended Solids (TSS) | 67 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1046132 | |
| Mar 22, 2018 | Iron, Total | .592 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 998515 | |
| Mar 22, 2018 | Mercury, Total | ND | ug/L | Effluent | Qualifying Storm Event | E245.1 | 998515 | |
| Mar 22, 2018 | Oil and Grease | 2.6 | mg/L | Effluent | Qualifying Storm Event | E1664A | 998515 | |
| Mar 22, 2018 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Field | 998515 | |
| Mar 22, 2018 | Total Suspended Solids (TSS) | 53 | mg/L | Effluent | Qualifying Storm Event | A2540D | 998515 | |
| Apr 11, 2017 | Iron, Total | 3.81 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 932984 | |
| Apr 11, 2017 | Mercury, Total | ND | ug/L | Effluent | Qualifying Storm Event | E245.1 | 932984 | |
| Apr 11, 2017 | Oil and Grease | 37.5 | mg/L | Effluent | Qualifying Storm Event | E1664A | 932984 | |
| Apr 11, 2017 | pH | 6.5 | SU | Effluent | Qualifying Storm Event | pH_Field | 932984 | |
| Apr 11, 2017 | Total Suspended Solids (TSS) | 88 | mg/L | Effluent | Qualifying Storm Event | A2540D | 932984 | |
| Jan 08, 2017 | Iron, Total | .538 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 921732 | |
| Jan 08, 2017 | Mercury, Total | ND | ug/L | Effluent | Qualifying Storm Event | E245.1 | 921732 | |
| Jan 08, 2017 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 921732 | |
| Jan 08, 2017 | pH | 6.5 | SU | Effluent | Qualifying Storm Event | pH_Field | 921732 |
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 | 3 | 3 Violation · 0 Potential (preliminary) · 0 Dismissed | Jul 02, 2006 – Jun 23, 2011 | Oct 21, 2026 | All violations |
| Enforcement actions | 3 | 3 issued · 0 draft · 0 withdrawn, rescinded or superseded | Aug 17, 2006 – Mar 30, 2012 | Oct 21, 2026 | All actions |
| Inspections | 1 | inspections, not findings | Nov 19, 2010 – Nov 19, 2010 | 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 (18 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jul 15, 2026 | Annual reports | 1334650 | Annual report 2025 | — | |
| Jun 17, 2025 | Annual reports | 1293440 | Annual report 2024 | — | |
| Jul 15, 2024 | Annual reports | 1242471 | Annual report 2023 | — | |
| Apr 01, 2024 | Annual reports | 1188437 | Annual report 2022 | — | |
| Jul 06, 2022 | Annual reports | 1111740 | Annual report 2021 | — | |
| Jul 13, 2021 | Annual reports | 1067707 | Annual report 2020 | — | |
| Jun 08, 2020 | Annual reports | 984900 | Annual report 2019 | — | |
| Jun 05, 2019 | Annual reports | 952416 | Annual report 2018 | — | |
| Jun 29, 2018 | Annual reports | 937829 | Annual report 2017 | — | |
| Jul 10, 2017 | Annual reports | 877019 | Annual report 2016 | — | |
| Jul 08, 2016 | Annual reports | 840118 | Annual report 2015 | — | |
| Mar 30, 2012 | Enforcement actions | 408429 | 13267 Letter/Order (Water Code section 13267 letter or order) | Historical | |
| Jun 23, 2011 | Violations | 847733 | Deficient BMP Implementation | Violation | Report |
| Nov 19, 2010 | Inspections | 2009450 | B Type compliance | — | No Further Action |
| Oct 14, 2010 | Enforcement actions | 403020 | SEL (Staff Enforcement Letter) | Historical | |
| Oct 14, 2010 | Violations | 842773 | Deficient BMP Implementation | Violation | Report |
| Aug 17, 2006 | Enforcement actions | 315866 | NNC (Notice of Non-Compliance) | Historical | |
| Jul 02, 2006 | Violations | 445634 | 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.