Granite Rock Co Santa Cruz Con
Active WDID 3 44I006081 Santa Cruz, Santa Cruz 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
- Santa Cruz, Santa Cruz County
- Region 3 · Central Coast · Location · Statewide map
- Receiving water
- San Lorenzo River (as reported by the facility)
- Evidence: identification corroborated San Lorenzo River Details
- Identified receiving water on the 2026 303(d) list
- Yes · 12 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
- 2 waterbodies; 2 on the 2026 303(d) list
- Proximity only; not a discharge pathway · Nearby waterbodies
- Monitoring results Evidence: facility-reported
- 342 distinct results, 11 reporting years (2015 to 2025)
- Most recent sample Feb 17, 2026 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 1 inspection · 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
- 36.98347, -122.03236
- 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
- 303 Coral Street, Santa Cruz 95060
- Regional Water Board
- 3 — Central Coast
HUC12 watershed Evidence: spatial
- Carbonera Creek-San Lorenzo River HUC12 180600150203
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 Concrete
- Primary industry (SIC)
- 3273-Ready-Mixed Concrete
- Application ID
- 186545
- NOI processed
- Apr 20, 1992
- Last certified
- Dec 22, 2023
- Facility size
- 4 Acres
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 186545 | Industrial | Active | Apr 20, 1992 | — | Dec 22, 2023 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- San Lorenzo River
- Discharges directly / indirectly
- N / Y (as answered in the permit application)
Evidence: identification corroborated San Lorenzo River CAR3041202219980827084709
Receiving water reported by facility — waterbody identification corroborated by geographic evidence.
Nearest distance from the reported facility location: 446 m. Method receiving_water/2.
2026 Integrated Report status Evidence: State-published
San Lorenzo River is on the 2026 Clean Water Act section 303(d) list (12 Appendix A decisions; category 5).
| Pollutant | Category | Listing decision | TMDL requirement | Decision ID |
|---|---|---|---|---|
| Aluminum | 5 | List on 303(d) list (TMDL required list) | 5A | 151439 |
| Benthic Community Effects | 5 | List on 303(d) list (TMDL required list) | 5A | 131910 |
| Chlordane | 5 | Do Not Delist from 303(d) list (TMDL required list) | 5A | 148848 |
| Chloride | 5 | List on 303(d) list (TMDL required list) | 5A | 85245 |
| Chlorpyrifos | 5 | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL) | 5B · San Lorenzo/Zayante Chlorpyrifos TMDL | 106476 |
| Enterococcus | 5 | List on 303(d) list (TMDL required list) | 5A | 84154 |
| Nitrate | 5 | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL) | 5B · San Lorenzo River Nitrate | 150843 |
| PCBs (Polychlorinated biphenyls) | 5 | Do Not Delist from 303(d) list (TMDL required list) | 5A | 148868 |
| Sedimentation/Siltation | 5 | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL) | 5B · San Lorenzo River Sediment | 68063 |
| Sodium | 5 | List on 303(d) list (TMDL required list) | 5A | 76471 |
| Temperature, water | 5 | Do Not Delist from 303(d) list (TMDL required list) | 5A | 126103 |
| Toxicity | 5 | List on 303(d) list (TMDL required list) | 5A | 106524 |
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 |
|---|---|---|---|
| San Lorenzo River Lagoon CAE3041205319980828094349 | 414 m | listed | 1 |
| San Lorenzo River CAR3041202219980827084709 | 446 m | listed | 12 |
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.
342 distinct measurements across 5 parameters, most recent sample Feb 17, 2026.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2025 | 28 | 4 | 0 | Nov 05, 2025 | Feb 17, 2026 |
| 2024 | 8 | 4 | 0 | Nov 11, 2024 | Nov 11, 2024 |
| 2023 | 20 | 4 | 0 | Dec 18, 2023 | Feb 20, 2024 |
| 2022 | 40 | 4 | 0 | Sep 19, 2022 | Feb 23, 2023 |
| 2021 | 32 | 4 | 0 | Oct 22, 2021 | Apr 19, 2022 |
| 2020 | 36 | 4 | 0 | Nov 18, 2020 | Feb 02, 2021 |
| 2019 | 40 | 4 | 0 | Dec 18, 2019 | Apr 06, 2020 |
| 2018 | 50 | 4 | 0 | Nov 28, 2018 | Feb 13, 2019 |
| 2017 | 31 | 5 | 0 | Nov 16, 2017 | Mar 01, 2018 |
| 2016 | 30 | 5 | 0 | Dec 09, 2016 | Jan 23, 2017 |
| 2015 | 27 | 5 | 0 | Nov 02, 2015 | Jan 05, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Iron, Total | mg/L | 83 | 3 | Nov 02, 2015 | Feb 17, 2026 | Results |
| pH | SU | 83 | 0 | Nov 02, 2015 | Feb 17, 2026 | Results |
| Total Suspended Solids (TSS) | mg/L | 83 | 0 | Nov 02, 2015 | Feb 17, 2026 | Results |
| Oil and Grease | mg/L | 80 | 50 | Nov 02, 2015 | Feb 17, 2026 | Results |
| Electrical Conductivity @ 25 Deg. C | umhos/cm | 13 | 0 | Jan 05, 2016 | Nov 16, 2017 | Results |
All results (342 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Feb 17, 2026 | Iron, Total | .042 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1371864 | |
| Feb 17, 2026 | Iron, Total | .33 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1371864 | |
| Feb 17, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1371864 | |
| Feb 17, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1371864 | |
| Feb 17, 2026 | pH | 6.78 | SU | Effluent | Qualifying Storm Event | pH_Field | 1371864 | |
| Feb 17, 2026 | pH | 7.54 | SU | Effluent | Qualifying Storm Event | pH_Field | 1371864 | |
| Feb 17, 2026 | Total Suspended Solids (TSS) | 1.1 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1371864 | |
| Feb 17, 2026 | Total Suspended Solids (TSS) | 13 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1371864 | |
| Feb 11, 2026 | Iron, Total | 3.2 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1368800 | |
| Feb 11, 2026 | Iron, Total | .71 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1368800 | |
| Feb 11, 2026 | Oil and Grease | 3.2 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1368800 | |
| Feb 11, 2026 | Oil and Grease | .97 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1368800 | |
| Feb 11, 2026 | pH | 8.2 | SU | Effluent | Qualifying Storm Event | pH_Field | 1368800 | |
| Feb 11, 2026 | pH | 7.88 | SU | Effluent | Qualifying Storm Event | pH_Field | 1368800 | |
| Feb 11, 2026 | Total Suspended Solids (TSS) | 52 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1368800 | |
| Feb 11, 2026 | Total Suspended Solids (TSS) | 38 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1368800 | |
| Nov 17, 2025 | Iron, Total | 2.1 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1358410 | |
| Nov 17, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1358410 | |
| Nov 17, 2025 | pH | 7.98 | SU | Effluent | Qualifying Storm Event | pH_Field | 1358410 | |
| Nov 17, 2025 | Total Suspended Solids (TSS) | 75 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1358410 | |
| Nov 05, 2025 | Iron, Total | .94 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1358413 | |
| Nov 05, 2025 | Iron, Total | .33 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1358413 | |
| Nov 05, 2025 | Oil and Grease | 1.4 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1358413 | |
| Nov 05, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1358413 | |
| Nov 05, 2025 | pH | 6.95 | SU | Effluent | Qualifying Storm Event | pH_Field | 1358413 | |
| Nov 05, 2025 | pH | 7.28 | SU | Effluent | Qualifying Storm Event | pH_Field | 1358413 | |
| Nov 05, 2025 | Total Suspended Solids (TSS) | 12 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1358413 | |
| Nov 05, 2025 | Total Suspended Solids (TSS) | 13 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1358413 | |
| Nov 11, 2024 | Iron, Total | 6.6 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1316367 | |
| Nov 11, 2024 | Iron, Total | .19 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1316367 | |
| Nov 11, 2024 | Oil and Grease | 3.7 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1316367 | |
| Nov 11, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1316367 | |
| Nov 11, 2024 | pH | 8.19 | SU | Effluent | Qualifying Storm Event | pH_Field | 1316367 | |
| Nov 11, 2024 | pH | 9.68 | SU | Effluent | Qualifying Storm Event | pH_Field | 1316367 | |
| Nov 11, 2024 | Total Suspended Solids (TSS) | 90 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1316367 | |
| Nov 11, 2024 | Total Suspended Solids (TSS) | 7.6 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1316367 | |
| Feb 20, 2024 | Iron, Total | .84 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1280665 | |
| Feb 20, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1280665 | |
| Feb 20, 2024 | pH | 7.3 | SU | Effluent | Qualifying Storm Event | pH_Field | 1280665 | |
| Feb 20, 2024 | Total Suspended Solids (TSS) | 13 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1280665 | |
| Jan 22, 2024 | Iron, Total | .8 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1280662 | |
| Jan 22, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1280662 | |
| Jan 22, 2024 | pH | 6.26 | SU | Effluent | Qualifying Storm Event | pH_Field | 1280662 | |
| Jan 22, 2024 | Total Suspended Solids (TSS) | 27 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1280662 | |
| Jan 17, 2024 | Iron, Total | .4 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1274636 | |
| Jan 17, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1274636 | |
| Jan 17, 2024 | pH | 6.95 | SU | Effluent | Qualifying Storm Event | pH_Field | 1274636 | |
| Jan 17, 2024 | Total Suspended Solids (TSS) | 10.8 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1274636 | |
| Dec 20, 2023 | Iron, Total | 3.8 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1274634 | |
| Dec 20, 2023 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1274634 |
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 | 1 | inspections, not findings | May 26, 2021 – May 26, 2021 | 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 (12 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jul 13, 2026 | Annual reports | 1334248 | Annual report 2025 | — | |
| Jul 10, 2025 | Annual reports | 1293020 | Annual report 2024 | — | |
| Jul 09, 2024 | Annual reports | 1242027 | Annual report 2023 | — | |
| Jul 14, 2023 | Annual reports | 1187960 | Annual report 2022 | — | |
| Jul 13, 2022 | Annual reports | 1111230 | Annual report 2021 | — | |
| Jul 01, 2021 | Annual reports | 1067171 | Annual report 2020 | — | |
| May 26, 2021 | Inspections | 2052001 | B Type compliance | Finalized | No Further Action |
| Jul 14, 2020 | Annual reports | 984328 | Annual report 2019 | — | |
| Jul 01, 2019 | Annual reports | 951833 | Annual report 2018 | — | |
| Jul 10, 2018 | Annual reports | 937244 | Annual report 2017 | — | |
| Jul 09, 2017 | Annual reports | 876397 | Annual report 2016 | — | |
| Jun 28, 2016 | Annual reports | 840298 | 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.