Granite Rock Co Wilson Quarry BR110
Active WDID 3 35I012503 Aromas, San Benito County Region 3 · Central Coast
At a glance
- Permit Evidence: SMARTS record
- Active Industrial
- Notice of Intent (WDID code I) · Permits and applications
- Location Evidence: facility-reported
- Aromas, San Benito County
- Region 3 · Central Coast · Location · Statewide map
- Receiving water
- Pajaro River (as reported by the facility)
- Evidence: identification corroborated Pajaro River Details
- Identified receiving water on the 2026 303(d) list
- Yes · 26 Appendix A decisions, category 5 Evidence: State-published
- Describes the waterbody, not this facility · Waterbody profile
- 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
- 295 distinct results, 11 reporting years (2015 to 2025)
- Most recent sample Apr 02, 2026 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 3 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
- 36.89728, -121.63477
- 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
- Ar Wilson and End Of Quarry Rd, Aromas 95004
- Regional Water Board
- 3 — Central Coast
HUC12 watershed Evidence: spatial
- Lower Pajaro River HUC12 180600020805
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
- Granite Rock Co AR Wilson Quarry
- Primary industry (SIC)
- 1423-Crushed and Broken Granite
- Secondary SIC
- 2951-Asphalt Paving Mixtures and Blocks
- Application ID
- 185300
- NOI processed
- Aug 15, 1996
- Last certified
- May 24, 2023
- Facility size
- 2000 Acres
- Impervious area
- 1.5 %
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 185300 | Industrial | Active | Aug 15, 1996 | — | May 24, 2023 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Pajaro River
- Discharges directly / indirectly
- Y / N (as answered in the permit application)
Evidence: identification corroborated Pajaro River CAR3051003019980826115152
Receiving water reported by facility — waterbody identification corroborated by geographic evidence.
Nearest distance from the reported facility location: 335 m. Method receiving_water/2.
2026 Integrated Report status Evidence: State-published
Pajaro River is on the 2026 Clean Water Act section 303(d) list (26 Appendix A decisions; category 5).
| Pollutant | Category | Listing decision | TMDL requirement | Decision ID |
|---|---|---|---|---|
| Aluminum | 5 | List on 303(d) list (TMDL required list) | 5A | 151449 |
| Benthic Community Effects | 5 | List on 303(d) list (TMDL required list) | 5A | 131883 |
| Boron | 5 | Do Not Delist from 303(d) list (TMDL required list) | 5A | 69845 |
| Chlordane | 5 | Do Not Delist from 303(d) list (TMDL required list) | 5A | 148902 |
| Chloride | 5 | Do Not Delist from 303(d) list (TMDL required list) | 5A | 87200 |
| Chlorpyrifos | 5 | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL) | 5B · Pajaro River Chlorpyrifos and Diazinon TMDL | 107058 |
| Chromium | 5 | Do Not Delist from 303(d) list (TMDL required list) | 5A | 107141 |
| DDD (Dichlorodiphenyldichloroethane) | 5 | Do Not Delist from 303(d) list (TMDL required list) | 5A | 150814 |
| DDE (Dichlorodiphenyldichloroethylene) | 5 | Do Not Delist from 303(d) list (TMDL required list) | 5A | 150817 |
| DDT (Dichlorodiphenyltrichloroethane) | 5 | Do Not Delist from 303(d) list (TMDL required list) | 5A | 150819 |
| Dieldrin | 5 | Do Not Delist from 303(d) list (TMDL required list) | 5A | 148907 |
| Escherichia coli (E. coli) | 5 | Do Not Delist from 303(d) list (TMDL required list) | 5A | 125870 |
| Heptachlor epoxide | 5 | List on 303(d) list (TMDL required list) | 5A | 148913 |
| Imidacloprid | 5 | Do Not Delist from 303(d) list (TMDL required list) | 5A | 148927 |
| Manganese | 5 | List on 303(d) list (TMDL required list) | 5A | 107079 |
| Nickel | 5 | List on 303(d) list (TMDL required list) | 5A | 107084 |
| Nitrate | 5 | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL) | 5B · Pajaro River Watershed Nutrients | 150841 |
| Oxyfluorfen | 5 | List on 303(d) list (TMDL required list) | 5A | 129864 |
| Oxygen, Dissolved | 5 | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL) | 5B · Pajaro River Watershed Nutrients | 107091 |
| PCBs (Polychlorinated biphenyls) | 5 | Do Not Delist from 303(d) list (TMDL required list) | 5A | 148921 |
| pH | 5 | Do Not Delist from 303(d) list (TMDL required list) | 5A | 107093 |
| Sedimentation/Siltation | 5 | List on 303(d) list (being addressed by USEPA approved TMDL) | 5B · Pajaro River Siltation/Sedimentation (including San Benito R., Llagas Cr., Rider Gulch Cr.) | 69273 |
| Selenium | 5 | List on 303(d) list (TMDL required list) | 5A | 107101 |
| Sodium | 5 | Do Not Delist from 303(d) list (TMDL required list) | 5A | 75362 |
| Toxicity | 5 | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL) | 5B · Pajaro River Chlorpyrifos and Diazinon TMDL | 107105 |
| Turbidity | 5 | Do Not Delist from 303(d) list (TMDL required list) | 5A | 107108 |
Published by the State Water Resources Control Board (2026 California Integrated Report, Appendix A). Listing status is taken from Appendix A only. State Board adoption 2026-02-03; USEPA approval not confirmed. A listing describes the waterbody, not this facility. Waterbody profile.
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 |
|---|---|---|---|
| Pajaro River CAR3051003019980826115152 | 335 m | listed | 26 |
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.
295 distinct measurements across 7 parameters, most recent sample Apr 02, 2026.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2025 | 48 | 4 | 0 | Nov 13, 2025 | Apr 02, 2026 |
| 2024 | 28 | 4 | 0 | Dec 27, 2024 | Mar 13, 2025 |
| 2023 | 32 | 4 | 0 | Oct 26, 2023 | Apr 04, 2024 |
| 2022 | 32 | 4 | 0 | Nov 08, 2022 | Feb 24, 2023 |
| 2021 | 12 | 4 | 0 | Dec 13, 2021 | Dec 13, 2021 |
| 2020 | 16 | 6 | 0 | Jan 27, 2021 | Jan 27, 2021 |
| 2019 | 12 | 6 | 0 | Jan 16, 2020 | Jan 16, 2020 |
| 2018 | 20 | 7 | 0 | Nov 29, 2018 | Feb 07, 2019 |
| 2017 | 6 | 6 | 0 | Mar 16, 2018 | Mar 16, 2018 |
| 2016 | 49 | 7 | 0 | Dec 15, 2016 | Feb 15, 2017 |
| 2015 | 40 | 7 | 0 | Nov 02, 2015 | Mar 07, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Oil and Grease | mg/L | 60 | 50 | Nov 02, 2015 | Apr 02, 2026 | Results |
| pH | SU | 60 | 0 | Nov 02, 2015 | Apr 02, 2026 | Results |
| Total Suspended Solids (TSS) | mg/L | 60 | 1 | Nov 02, 2015 | Apr 02, 2026 | Results |
| Nitrite Plus Nitrate (as N) | mg/L | 56 | 12 | Dec 10, 2015 | Apr 02, 2026 | Results |
| Nitrate, Total (as N) | mg/L | 22 | 7 | Nov 02, 2015 | Jan 27, 2021 | Results |
| Nitrite, Total (as N) | mg/L | 22 | 17 | Nov 02, 2015 | Jan 27, 2021 | Results |
| Electrical Conductivity @ 25 Deg. C | umhos/cm | 15 | 0 | Nov 02, 2015 | Feb 07, 2019 | Results |
All results (295 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Apr 02, 2026 | Nitrite Plus Nitrate (as N) | .057 | mg/L | Effluent | Qualifying Storm Event | A4500F | 1371861 | |
| Apr 02, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1371861 | |
| Apr 02, 2026 | pH | 7.16 | SU | Effluent | Qualifying Storm Event | pH_Field | 1371861 | |
| Apr 02, 2026 | Total Suspended Solids (TSS) | 8 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1371861 | |
| Feb 24, 2026 | Nitrite Plus Nitrate (as N) | .22 | mg/L | Effluent | Qualifying Storm Event | A4500F | 1371860 | |
| Feb 24, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1371860 | |
| Feb 24, 2026 | pH | 7.94 | SU | Effluent | Qualifying Storm Event | pH_Field | 1371860 | |
| Feb 24, 2026 | Total Suspended Solids (TSS) | 28 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1371860 | |
| Feb 19, 2026 | Nitrite Plus Nitrate (as N) | .19 | mg/L | Effluent | Qualifying Storm Event | A4500F | 1371859 | |
| Feb 19, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1371859 | |
| Feb 19, 2026 | pH | 7.14 | SU | Effluent | Qualifying Storm Event | pH_Field | 1371859 | |
| Feb 19, 2026 | Total Suspended Solids (TSS) | 55 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1371859 | |
| Feb 18, 2026 | Nitrite Plus Nitrate (as N) | .25 | mg/L | Effluent | Qualifying Storm Event | A4500F | 1371859 | |
| Feb 18, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1371859 | |
| Feb 18, 2026 | pH | 7.12 | SU | Effluent | Qualifying Storm Event | pH_Field | 1371859 | |
| Feb 18, 2026 | Total Suspended Solids (TSS) | 31 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1371859 | |
| Feb 17, 2026 | Nitrite Plus Nitrate (as N) | .058 | mg/L | Effluent | Qualifying Storm Event | A4500F | 1371859 | |
| Feb 17, 2026 | Nitrite Plus Nitrate (as N) | ND | mg/L | Effluent | Qualifying Storm Event | A4500F | 1371859 | |
| Feb 17, 2026 | Nitrite Plus Nitrate (as N) | .19 | mg/L | Effluent | Qualifying Storm Event | A4500F | 1371859 | |
| Feb 17, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1371859 | |
| Feb 17, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1371859 | |
| Feb 17, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1371859 | |
| Feb 17, 2026 | pH | 7.32 | SU | Effluent | Qualifying Storm Event | pH_Field | 1371859 | |
| Feb 17, 2026 | pH | 7.24 | SU | Effluent | Qualifying Storm Event | pH_Field | 1371859 | |
| Feb 17, 2026 | pH | 7.7 | SU | Effluent | Qualifying Storm Event | pH_Field | 1371859 | |
| Feb 17, 2026 | Total Suspended Solids (TSS) | 25 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1371859 | |
| Feb 17, 2026 | Total Suspended Solids (TSS) | 19 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1371859 | |
| Feb 17, 2026 | Total Suspended Solids (TSS) | 47 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1371859 | |
| Feb 12, 2026 | Nitrite Plus Nitrate (as N) | ND | mg/L | Effluent | Qualifying Storm Event | A4500F | 1371855 | |
| Feb 12, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1371855 | |
| Feb 12, 2026 | pH | 7.38 | SU | Effluent | Qualifying Storm Event | pH_Field | 1371855 | |
| Feb 12, 2026 | Total Suspended Solids (TSS) | 26 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1371855 | |
| Dec 30, 2025 | Nitrite Plus Nitrate (as N) | .064 | mg/L | Effluent | Qualifying Storm Event | A4500F | 1364744 | |
| Dec 30, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1364744 | |
| Dec 30, 2025 | pH | 7.37 | SU | Effluent | Qualifying Storm Event | pH_Field | 1364744 | |
| Dec 30, 2025 | Total Suspended Solids (TSS) | 5.6 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1364744 | |
| Dec 26, 2025 | Nitrite Plus Nitrate (as N) | 2.1 | mg/L | Effluent | Qualifying Storm Event | A4500F | 1364744 | |
| Dec 26, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1364744 | |
| Dec 26, 2025 | pH | 7.15 | SU | Effluent | Qualifying Storm Event | pH_Field | 1364744 | |
| Dec 26, 2025 | Total Suspended Solids (TSS) | 23 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1364744 | |
| Nov 14, 2025 | Nitrite Plus Nitrate (as N) | .28 | mg/L | Effluent | Qualifying Storm Event | A4500F | 1360499 | |
| Nov 14, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1360499 | |
| Nov 14, 2025 | pH | 7.52 | SU | Effluent | Qualifying Storm Event | pH_Field | 1360499 | |
| Nov 14, 2025 | Total Suspended Solids (TSS) | 28 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1360499 | |
| Nov 13, 2025 | Nitrite Plus Nitrate (as N) | .088 | mg/L | Effluent | Qualifying Storm Event | A4500F | 1360499 | |
| Nov 13, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1360499 | |
| Nov 13, 2025 | pH | 7.42 | SU | Effluent | Qualifying Storm Event | pH_Field | 1360499 | |
| Nov 13, 2025 | Total Suspended Solids (TSS) | 97 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1360499 | |
| Mar 13, 2025 | Nitrite Plus Nitrate (as N) | .072 | mg/L | Effluent | Qualifying Storm Event | A4500F | 1329570 | |
| Mar 13, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1329570 |
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 | Oct 13, 2025 – Oct 13, 2025 | Oct 21, 2026 | All violations |
| Enforcement actions | 1 | 1 issued · 0 draft · 0 withdrawn, rescinded or superseded | Feb 09, 2026 – Feb 09, 2026 | Oct 21, 2026 | All actions |
| Inspections | 3 | inspections, not findings | Jan 13, 2016 – Oct 13, 2025 | 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 (16 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jul 13, 2026 | Annual reports | 1333952 | Annual report 2025 | — | |
| Feb 09, 2026 | Enforcement actions | 468779 | NOV (Notice of Violation) | Active | |
| Oct 13, 2025 | Inspections | 2069800 | Non-compliance Follow-up | Finalized | Additional Info Required |
| Oct 13, 2025 | Violations | 903246 | Deficient Report | Violation | Inspection |
| Jul 10, 2025 | Annual reports | 1292715 | Annual report 2024 | — | |
| Jul 09, 2024 | Annual reports | 1241705 | Annual report 2023 | — | |
| Jan 17, 2024 | Inspections | 2063595 | B Type compliance | Finalized | Additional Info Required |
| Jul 14, 2023 | Annual reports | 1187624 | Annual report 2022 | — | |
| Jul 13, 2022 | Annual reports | 1110866 | Annual report 2021 | — | |
| Jul 14, 2021 | Annual reports | 1066788 | Annual report 2020 | — | |
| Jul 14, 2020 | Annual reports | 983928 | Annual report 2019 | — | |
| Jun 29, 2019 | Annual reports | 951420 | Annual report 2018 | — | |
| Jul 10, 2018 | Annual reports | 936826 | Annual report 2017 | — | |
| Jul 09, 2017 | Annual reports | 875958 | Annual report 2016 | — | |
| Jun 30, 2016 | Annual reports | 844582 | Annual report 2015 | — | |
| Jan 13, 2016 | Inspections | 2029783 | B Type compliance | — | Follow-up Inspection Needed |
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.