Cooperstown Quarry
Active WDID 5S55I023419 Cooperstown, 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
- Cooperstown, 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
- 111 distinct results, 10 reporting years (2016 to 2025)
- Most recent sample Apr 22, 2026 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 0 inspections · 0 violation records · 0 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
- 37.744561, -120.531144
- 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
- APN 063 250 13 00 Cooperstown Rd, Cooperstown 95327
- Regional Water Board
- 5S — Central Valley (Sacramento)
HUC12 watershed Evidence: spatial
- Rydberg Creek-Dry Creek HUC12 180400091304
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
- Resource Exploration and Drilling
- Primary industry (SIC)
- 1429-Crushed and Broken Stone, NEC
- Application ID
- 422320
- NOI processed
- Dec 02, 2011
- Last certified
- Apr 13, 2015
- Facility size
- 135 Acres
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 422320 | Industrial | Active | Dec 02, 2011 | — | Apr 13, 2015 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- unknown
- 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.
111 distinct measurements across 3 parameters, most recent sample Apr 22, 2026.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2025 | 12 | 3 | 0 | Dec 26, 2025 | Apr 22, 2026 |
| 2024 | 18 | 3 | 0 | Dec 27, 2024 | Mar 18, 2025 |
| 2023 | 18 | 3 | 0 | Jan 23, 2024 | Feb 07, 2024 |
| 2022 | 9 | 3 | 0 | Jan 06, 2023 | Jan 06, 2023 |
| 2021 | 9 | 3 | 0 | Dec 24, 2021 | Dec 24, 2021 |
| 2020 | 9 | 3 | 0 | Jan 29, 2021 | Jan 29, 2021 |
| 2019 | 15 | 3 | 0 | Dec 03, 2019 | Apr 07, 2020 |
| 2018 | 3 | 3 | 0 | Dec 17, 2018 | Dec 17, 2018 |
| 2017 | 6 | 3 | 0 | Jan 09, 2018 | Mar 02, 2018 |
| 2016 | 12 | 3 | 0 | Nov 01, 2016 | Dec 15, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Oil and Grease | mg/L | 37 | 26 | Nov 01, 2016 | Apr 22, 2026 | Results |
| pH | SU | 37 | 0 | Nov 01, 2016 | Apr 22, 2026 | Results |
| Total Suspended Solids (TSS) | mg/L | 37 | 5 | Nov 01, 2016 | Apr 22, 2026 | Results |
All results (111 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Apr 22, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1372744 | |
| Apr 22, 2026 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1372744 | |
| Apr 22, 2026 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 1372744 | |
| Dec 26, 2025 | Oil and Grease | 1.4 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1372741 | |
| Dec 26, 2025 | Oil and Grease | 1.2 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1372741 | |
| Dec 26, 2025 | Oil and Grease | 1.6 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1372741 | |
| Dec 26, 2025 | pH | 6.8 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1372741 | |
| Dec 26, 2025 | pH | 6.8 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1372741 | |
| Dec 26, 2025 | pH | 6.6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1372741 | |
| Dec 26, 2025 | Total Suspended Solids (TSS) | 64 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1372741 | |
| Dec 26, 2025 | Total Suspended Solids (TSS) | 62 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1372741 | |
| Dec 26, 2025 | Total Suspended Solids (TSS) | 94 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1372741 | |
| Mar 18, 2025 | Oil and Grease | 7.8 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1330482 | |
| Mar 18, 2025 | Oil and Grease | 2.9 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1330482 | |
| Mar 18, 2025 | Oil and Grease | 8.4 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1330482 | |
| Mar 18, 2025 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1330482 | |
| Mar 18, 2025 | pH | 7.2 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1330482 | |
| Mar 18, 2025 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1330482 | |
| Mar 18, 2025 | Total Suspended Solids (TSS) | 5.5 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1330482 | |
| Mar 18, 2025 | Total Suspended Solids (TSS) | 6.5 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1330482 | |
| Mar 18, 2025 | Total Suspended Solids (TSS) | 5 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1330482 | |
| Dec 27, 2024 | Oil and Grease | 4.8 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1319314 | |
| Dec 27, 2024 | Oil and Grease | 3.1 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1319314 | |
| Dec 27, 2024 | Oil and Grease | 4.2 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1319314 | |
| Dec 27, 2024 | pH | 6.6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1319314 | |
| Dec 27, 2024 | pH | 6.8 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1319314 | |
| Dec 27, 2024 | pH | 6.8 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1319314 | |
| Dec 27, 2024 | Total Suspended Solids (TSS) | 20 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1319314 | |
| Dec 27, 2024 | Total Suspended Solids (TSS) | 21.3 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1319314 | |
| Dec 27, 2024 | Total Suspended Solids (TSS) | 2.67 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1319314 | |
| Feb 07, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1282961 | |
| Feb 07, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1282961 | |
| Feb 07, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1282961 | |
| Feb 07, 2024 | pH | 6.8 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1282961 | |
| Feb 07, 2024 | pH | 6.6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1282961 | |
| Feb 07, 2024 | pH | 6.6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1282961 | |
| Feb 07, 2024 | Total Suspended Solids (TSS) | 24 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1282961 | |
| Feb 07, 2024 | Total Suspended Solids (TSS) | 4.5 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1282961 | |
| Feb 07, 2024 | Total Suspended Solids (TSS) | 4 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1282961 | |
| Jan 23, 2024 | Oil and Grease | ND 1 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1277148 | |
| Jan 23, 2024 | Oil and Grease | 1.1 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1277148 | |
| Jan 23, 2024 | Oil and Grease | 1 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1277148 | |
| Jan 23, 2024 | pH | 6.6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1277148 | |
| Jan 23, 2024 | pH | 6.4 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1277148 | |
| Jan 23, 2024 | pH | 6.4 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1277148 | |
| Jan 23, 2024 | Total Suspended Solids (TSS) | 13 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1277148 | |
| Jan 23, 2024 | Total Suspended Solids (TSS) | 5.5 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1277148 | |
| Jan 23, 2024 | Total Suspended Solids (TSS) | 2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1277148 | |
| Jan 06, 2023 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1225939 | |
| Jan 06, 2023 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1225939 |
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 | 0 | 0 Violation · 0 Potential (preliminary) · 0 Dismissed | — | Oct 21, 2026 | |
| Enforcement actions | 0 | 0 issued · 0 draft · 0 withdrawn, rescinded or superseded | — | Oct 21, 2026 | |
| 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 (11 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jul 14, 2026 | Annual reports | 1337872 | Annual report 2025 | — | |
| Jul 14, 2025 | Annual reports | 1296807 | Annual report 2024 | — | |
| Jun 26, 2024 | Annual reports | 1246034 | Annual report 2023 | — | |
| Jun 26, 2023 | Annual reports | 1192170 | Annual report 2022 | — | |
| Jul 07, 2022 | Annual reports | 1115809 | Annual report 2021 | — | |
| Jun 11, 2021 | Annual reports | 1063932 | Annual report 2020 | — | |
| Jun 29, 2020 | Annual reports | 980871 | Annual report 2019 | — | |
| Jul 09, 2019 | Annual reports | 957155 | Annual report 2018 | — | |
| Jun 13, 2018 | Annual reports | 942587 | Annual report 2017 | — | |
| Jun 09, 2017 | Annual reports | 882063 | Annual report 2016 | — | |
| Jun 30, 2016 | Annual reports | 842617 | 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.