Mercer Fraser Trinidad
Active WDID 1 12I019994 Trinidad, Humboldt County Region 1 · North Coast
At a glance
- Permit Evidence: SMARTS record
- Active Industrial
- Notice of Intent (WDID code I) · Permits and applications
- Location Evidence: facility-reported
- Trinidad, Humboldt County
- Region 1 · North Coast · Location · Statewide map
- Receiving water
- Parker 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
- 2 waterbodies; 1 on the 2026 303(d) list
- Proximity only; not a discharge pathway · Nearby waterbodies
- Monitoring results Evidence: facility-reported
- 108 distinct results, 8 reporting years (2015 to 2025)
- Most recent sample Apr 01, 2026 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 5 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
- 41.06495, -124.13235
- 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
- 350 Quarry Rd, Trinidad 95570
- Regional Water Board
- 1 — North Coast
HUC12 watershed Evidence: spatial
- Luffenholtz Creek-Frontal Pacific Ocean HUC12 180101020503
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
- Mercer Fraser Co
- Primary industry (SIC)
- 1429-Crushed and Broken Stone, NEC
- Application ID
- 272507
- NOI processed
- Dec 23, 2005
- Last certified
- Aug 05, 2026
- Facility size
- 12 Acres
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 272507 | Industrial | Active | Dec 23, 2005 | — | Aug 05, 2026 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Parker Creek
- Discharges directly / indirectly
- N / Y (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.
| Waterbody (2026 Integrated Report) | Distance | 2026 303(d) list | Appendix A decisions |
|---|---|---|---|
| Trinidad HU, Big Lagoon HA, Mill Creek CAR1081000020230404035623 | 413 m | not listed | 0 |
| Trinidad HU, Big Lagoon HA, McConnahas Mill Creek CAR1081000020180430045568 | 708 m | listed | 2 |
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.
108 distinct measurements across 4 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 | 20 | 4 | 0 | Dec 15, 2025 | Apr 01, 2026 |
| 2024 | 16 | 4 | 0 | Dec 12, 2024 | Mar 12, 2025 |
| 2023 | 8 | 4 | 0 | Jun 03, 2024 | Jun 03, 2024 |
| 2022 | 8 | 4 | 0 | Apr 17, 2023 | May 08, 2023 |
| 2020 | 4 | 4 | 0 | Dec 15, 2020 | Dec 15, 2020 |
| 2019 | 16 | 4 | 0 | Nov 26, 2019 | Apr 22, 2020 |
| 2018 | 20 | 4 | 0 | Nov 27, 2018 | May 15, 2019 |
| 2015 | 16 | 4 | 0 | Nov 24, 2015 | Feb 26, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Nitrite Plus Nitrate (as N) | mg/L | 27 | 6 | Nov 24, 2015 | Apr 01, 2026 | Results |
| Oil and Grease | mg/L | 27 | 25 | Nov 24, 2015 | Apr 01, 2026 | Results |
| pH | SU | 27 | 0 | Nov 24, 2015 | Apr 01, 2026 | Results |
| Total Suspended Solids (TSS) | mg/L | 27 | 0 | Nov 24, 2015 | Apr 01, 2026 | Results |
All results (108 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Apr 01, 2026 | Nitrite Plus Nitrate (as N) | .12 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1371397 | |
| Apr 01, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1371397 | |
| Apr 01, 2026 | pH | 6.6 | SU | Effluent | Qualifying Storm Event | pH_Field | 1371397 | |
| Apr 01, 2026 | Total Suspended Solids (TSS) | 44 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1371397 | |
| Mar 05, 2026 | Nitrite Plus Nitrate (as N) | .19 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1370773 | |
| Mar 05, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1370773 | |
| Mar 05, 2026 | pH | 7.2 | SU | Effluent | Qualifying Storm Event | pH_Field | 1370773 | |
| Mar 05, 2026 | Total Suspended Solids (TSS) | 21 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1370773 | |
| Dec 26, 2025 | Nitrite Plus Nitrate (as N) | .46 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1365700 | |
| Dec 26, 2025 | Nitrite Plus Nitrate (as N) | .62 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1365700 | |
| Dec 26, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1365700 | |
| Dec 26, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1365700 | |
| Dec 26, 2025 | pH | 8.4 | SU | Effluent | Qualifying Storm Event | pH_Field | 1365700 | |
| Dec 26, 2025 | pH | 8.4 | SU | Effluent | Qualifying Storm Event | pH_Field | 1365700 | |
| Dec 26, 2025 | Total Suspended Solids (TSS) | 27 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1365700 | |
| Dec 26, 2025 | Total Suspended Solids (TSS) | 73 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1365700 | |
| Dec 15, 2025 | Nitrite Plus Nitrate (as N) | .481 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1364541 | |
| Dec 15, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1364541 | |
| Dec 15, 2025 | pH | 6.7 | SU | Effluent | Qualifying Storm Event | pH_Field | 1364541 | |
| Dec 15, 2025 | Total Suspended Solids (TSS) | 25 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1364541 | |
| Mar 12, 2025 | Nitrite Plus Nitrate (as N) | ND | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1329457 | |
| Mar 12, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1329457 | |
| Mar 12, 2025 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Field | 1329457 | |
| Mar 12, 2025 | Total Suspended Solids (TSS) | 70 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1329457 | |
| Jan 31, 2025 | Nitrite Plus Nitrate (as N) | .18 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1325034 | |
| Jan 31, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1325034 | |
| Jan 31, 2025 | pH | 6.8 | SU | Effluent | Qualifying Storm Event | pH_Field | 1325034 | |
| Jan 31, 2025 | Total Suspended Solids (TSS) | 9.4 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1325034 | |
| Dec 16, 2024 | Nitrite Plus Nitrate (as N) | .15 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1319503 | |
| Dec 16, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1319503 | |
| Dec 16, 2024 | pH | 7.2 | SU | Effluent | Qualifying Storm Event | pH_Field | 1319503 | |
| Dec 16, 2024 | Total Suspended Solids (TSS) | 6.2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1319503 | |
| Dec 12, 2024 | Nitrite Plus Nitrate (as N) | .16 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1319376 | |
| Dec 12, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1319376 | |
| Dec 12, 2024 | pH | 6.9 | SU | Effluent | Qualifying Storm Event | pH_Field | 1319376 | |
| Dec 12, 2024 | Total Suspended Solids (TSS) | 17 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1319376 | |
| Jun 03, 2024 | Nitrite Plus Nitrate (as N) | .46 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1289885 | |
| Jun 03, 2024 | Nitrite Plus Nitrate (as N) | .052 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1289885 | |
| Jun 03, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1289885 | |
| Jun 03, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1289885 | |
| Jun 03, 2024 | pH | 7.4 | SU | Effluent | Qualifying Storm Event | pH_Field | 1289885 | |
| Jun 03, 2024 | pH | 7.1 | SU | Effluent | Qualifying Storm Event | pH_Field | 1289885 | |
| Jun 03, 2024 | Total Suspended Solids (TSS) | 7.6 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1289885 | |
| Jun 03, 2024 | Total Suspended Solids (TSS) | 9.6 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1289885 | |
| May 08, 2023 | Nitrite Plus Nitrate (as N) | .26 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1241535 | |
| May 08, 2023 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1241535 | |
| May 08, 2023 | pH | 6.9 | SU | Effluent | Qualifying Storm Event | pH_Field | 1241535 | |
| May 08, 2023 | Total Suspended Solids (TSS) | 18 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1241535 | |
| Apr 17, 2023 | Nitrite Plus Nitrate (as N) | .12 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1236947 | |
| Apr 17, 2023 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1236947 |
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, 2012 – Jul 02, 2012 | Oct 21, 2026 | All violations |
| Enforcement actions | 1 | 1 issued · 0 draft · 0 withdrawn, rescinded or superseded | Aug 03, 2012 – Aug 03, 2012 | Oct 21, 2026 | All actions |
| Inspections | 5 | inspections, not findings | Feb 20, 2014 – May 08, 2024 | 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 14, 2026 | Annual reports | 1333995 | Annual report 2025 | — | |
| Jul 14, 2025 | Annual reports | 1292760 | Annual report 2024 | — | |
| Jul 12, 2024 | Annual reports | 1241754 | Annual report 2023 | — | |
| May 08, 2024 | Inspections | 2064381 | Complaint | Finalized | Additional Info Required |
| Jul 14, 2023 | Annual reports | 1187674 | Annual report 2022 | — | |
| Apr 13, 2023 | Inspections | 2060146 | Complaint | Finalized | Additional Info Required |
| Jul 14, 2022 | Annual reports | 1110922 | Annual report 2021 | — | |
| Jul 15, 2021 | Annual reports | 1066847 | Annual report 2020 | — | |
| Jul 15, 2020 | Annual reports | 983990 | Annual report 2019 | — | |
| Jul 12, 2019 | Annual reports | 951483 | Annual report 2018 | — | |
| Jul 13, 2018 | Annual reports | 936889 | Annual report 2017 | — | |
| Jul 10, 2017 | Annual reports | 876028 | Annual report 2016 | — | |
| Jul 13, 2016 | Annual reports | 846270 | Annual report 2015 | — | |
| Jun 24, 2016 | Inspections | 2030350 | Complaint | — | No Further Action |
| Feb 03, 2016 | Inspections | 2028513 | Complaint | — | Additional Info Required |
| Feb 20, 2014 | Inspections | 2021440 | B Type compliance | — | No Further Action |
| Aug 03, 2012 | Enforcement actions | 409678 | 1st NNC - AR (First Notice of Non-Compliance (annual report)) | Active | |
| Jul 02, 2012 | Violations | 848672 | 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.