Calstone Company Gilroy
Terminated WDID 3 43I025201 Gilroy, Santa Clara County Region 3 · Central Coast
At a glance
- Permit Evidence: SMARTS record
- Terminated Industrial
- Notice of Intent (WDID code I) · Permits and applications
- Location Evidence: facility-reported
- Gilroy, Santa Clara County
- Region 3 · Central Coast · 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
- 1 waterbody; 1 on the 2026 303(d) list
- Proximity only; not a discharge pathway · Nearby waterbodies
- Monitoring results Evidence: facility-reported
- 135 distinct results, 10 reporting years (2015 to 2024)
- Most recent sample Nov 25, 2024 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 3 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
- 36.98554, -121.55106
- 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
- 5787 Obata Way, Gilroy 95020
- Regional Water Board
- 3 — Central Coast
HUC12 watershed Evidence: spatial
- Upper Pajaro River HUC12 180600020801
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
- Terminated
- Operator
- Calstone Company
- Primary industry (SIC)
- 3271-Concrete Block and Brick
- Application ID
- 451655
- NOI processed
- Dec 16, 2014
- Termination effective
- Jan 22, 2025
- Last certified
- May 07, 2015
- Facility size
- 5.1 Acres
- Impervious area
- 100 %
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 451655 | Industrial | Terminated | Dec 16, 2014 | Jan 22, 2025 | May 07, 2015 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Miller Slough
- 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.
| Waterbody (2026 Integrated Report) | Distance | 2026 303(d) list | Appendix A decisions |
|---|---|---|---|
| Uvas Creek (below Uvas Reservoir) CAR3052002120080603163208 | 921 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.
135 distinct measurements across 11 parameters, most recent sample Nov 25, 2024.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2024 | 8 | 4 | 0 | Nov 11, 2024 | Nov 25, 2024 |
| 2023 | 8 | 4 | 0 | Jan 22, 2024 | Mar 06, 2024 |
| 2022 | 16 | 4 | 0 | Nov 01, 2022 | Mar 21, 2023 |
| 2021 | 4 | 4 | 0 | Nov 09, 2021 | Nov 09, 2021 |
| 2020 | 8 | 4 | 0 | Jan 22, 2021 | Feb 02, 2021 |
| 2019 | 8 | 4 | 0 | Dec 07, 2019 | Jan 16, 2020 |
| 2018 | 10 | 10 | 0 | Nov 28, 2018 | Nov 28, 2018 |
| 2017 | 20 | 10 | 0 | Nov 16, 2017 | Feb 26, 2018 |
| 2016 | 42 | 11 | 0 | Oct 28, 2016 | Feb 07, 2017 |
| 2015 | 11 | 11 | 0 | Nov 24, 2015 | Nov 24, 2015 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Iron, Total | mg/L | 21 | 2 | Nov 24, 2015 | Nov 25, 2024 | Results |
| Oil and Grease | mg/L | 21 | 13 | Nov 24, 2015 | Nov 25, 2024 | Results |
| pH | SU | 21 | 0 | Nov 24, 2015 | Nov 25, 2024 | Results |
| Total Suspended Solids (TSS) | mg/L | 21 | 2 | Nov 24, 2015 | Nov 25, 2024 | Results |
| Cadmium, Total | mg/L | 8 | 8 | Nov 24, 2015 | Nov 28, 2018 | Results |
| Chromium (Total) | mg/L | 8 | 1 | Nov 24, 2015 | Nov 28, 2018 | Results |
| Copper, Total | mg/L | 8 | 2 | Nov 24, 2015 | Nov 28, 2018 | Results |
| Lead, Total | mg/L | 8 | 3 | Nov 24, 2015 | Nov 28, 2018 | Results |
| Nickel, Total | mg/L | 8 | 3 | Nov 24, 2015 | Nov 28, 2018 | Results |
| Zinc, Total | mg/L | 8 | 1 | Nov 24, 2015 | Nov 28, 2018 | Results |
| Electrical Conductivity @ 25 Deg. C | umhos/cm | 3 | 0 | Nov 24, 2015 | Dec 08, 2016 | Results |
All results (135 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Nov 25, 2024 | Iron, Total | 1.1 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1317473 | |
| Nov 25, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1317473 | |
| Nov 25, 2024 | pH | 9 | SU | Effluent | Qualifying Storm Event | pH_Field | 1317473 | |
| Nov 25, 2024 | Total Suspended Solids (TSS) | 93 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1317473 | |
| Nov 11, 2024 | Iron, Total | 12 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1316407 | |
| Nov 11, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1316407 | |
| Nov 11, 2024 | pH | 8.9 | SU | Effluent | Qualifying Storm Event | pH_Field | 1316407 | |
| Nov 11, 2024 | Total Suspended Solids (TSS) | 320 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1316407 | |
| Mar 06, 2024 | Iron, Total | 1.9 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1284310 | |
| Mar 06, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1284310 | |
| Mar 06, 2024 | pH | 9.2 | SU | Effluent | Qualifying Storm Event | pH_Field | 1284310 | |
| Mar 06, 2024 | Total Suspended Solids (TSS) | 47 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1284310 | |
| Jan 22, 2024 | Iron, Total | .43 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1281472 | |
| Jan 22, 2024 | Oil and Grease | 1.5 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1281472 | |
| Jan 22, 2024 | pH | 8.45 | SU | Effluent | Qualifying Storm Event | pH_Field | 1281472 | |
| Jan 22, 2024 | Total Suspended Solids (TSS) | 10 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1281472 | |
| Mar 21, 2023 | Iron, Total | 5.4 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1250784 | |
| Mar 21, 2023 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1250784 | |
| Mar 21, 2023 | pH | 8.35 | SU | Effluent | Qualifying Storm Event | pH_Field | 1250784 | |
| Mar 21, 2023 | Total Suspended Solids (TSS) | 84 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1250784 | |
| Mar 09, 2023 | Iron, Total | 1.6 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1250782 | |
| Mar 09, 2023 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1250782 | |
| Mar 09, 2023 | pH | 9 | SU | Effluent | Qualifying Storm Event | pH_Field | 1250782 | |
| Mar 09, 2023 | Total Suspended Solids (TSS) | 20 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1250782 | |
| Dec 01, 2022 | Iron, Total | 6.2 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1219542 | |
| Dec 01, 2022 | Oil and Grease | 2.5 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1219542 | |
| Dec 01, 2022 | pH | 8.3 | SU | Effluent | Qualifying Storm Event | pH_Field | 1219542 | |
| Dec 01, 2022 | Total Suspended Solids (TSS) | 190 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1219542 | |
| Nov 01, 2022 | Iron, Total | 4.3 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1219199 | |
| Nov 01, 2022 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1219199 | |
| Nov 01, 2022 | pH | 8.1 | SU | Effluent | Qualifying Storm Event | pH_Field | 1219199 | |
| Nov 01, 2022 | Total Suspended Solids (TSS) | 87 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1219199 | |
| Nov 09, 2021 | Iron, Total | 2.8 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1170805 | |
| Nov 09, 2021 | Oil and Grease | 2 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1170805 | |
| Nov 09, 2021 | pH | 8.77 | SU | Effluent | Qualifying Storm Event | pH_Field | 1170805 | |
| Nov 09, 2021 | Total Suspended Solids (TSS) | 55 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1170805 | |
| Feb 02, 2021 | Iron, Total | 3.2 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1146003 | |
| Feb 02, 2021 | Oil and Grease | 2.2 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1146003 | |
| Feb 02, 2021 | pH | 9.18 | SU | Effluent | Qualifying Storm Event | pH_Field | 1146003 | |
| Feb 02, 2021 | Total Suspended Solids (TSS) | 86 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1146003 | |
| Jan 22, 2021 | Iron, Total | 2.5 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1146002 | |
| Jan 22, 2021 | Oil and Grease | 2.5 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1146002 | |
| Jan 22, 2021 | pH | 8.74 | SU | Effluent | Qualifying Storm Event | pH_Field | 1146002 | |
| Jan 22, 2021 | Total Suspended Solids (TSS) | 43 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1146002 | |
| Jan 16, 2020 | Iron, Total | .31 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1099528 | |
| Jan 16, 2020 | Oil and Grease | 1.6 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1099528 | |
| Jan 16, 2020 | pH | 7.4 | SU | Effluent | Qualifying Storm Event | pH_Field | 1099528 | |
| Jan 16, 2020 | Total Suspended Solids (TSS) | 18.2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1099528 | |
| Dec 07, 2019 | Iron, Total | .23 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1099507 | |
| Dec 07, 2019 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1099507 |
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 | 3 | inspections, not findings | Mar 07, 2019 – Nov 14, 2024 | Oct 21, 2026 | All inspections |
| Annual reports | 10 | certified reports (contents not shown) | 2015 – 2024 | 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 (13 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jan 22, 2025 | Annual reports | 1298254 | Annual report 2024 | — | |
| Nov 14, 2024 | Inspections | 2066211 | B Type compliance | Finalized | No Further Action |
| Jun 26, 2024 | Annual reports | 1247533 | Annual report 2023 | — | |
| Jul 17, 2023 | Annual reports | 1193736 | Annual report 2022 | — | |
| Jul 14, 2022 | Annual reports | 1117592 | Annual report 2021 | — | |
| Jul 14, 2021 | Annual reports | 1065818 | Annual report 2020 | — | |
| Jul 13, 2020 | Annual reports | 982937 | Annual report 2019 | — | |
| Mar 10, 2020 | Inspections | 2046980 | B Type compliance | Finalized | No Further Action |
| Jul 06, 2019 | Annual reports | 959296 | Annual report 2018 | — | |
| Mar 07, 2019 | Inspections | 2042929 | B Type compliance | — | No Further Action |
| Jun 18, 2018 | Annual reports | 944731 | Annual report 2017 | — | |
| Jul 14, 2017 | Annual reports | 884083 | Annual report 2016 | — | |
| Jul 18, 2016 | Annual reports | 843911 | 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.