Syar Industries Inc Napa Quarry
Active WDID 2 28I005111 Napa, Napa County Region 2 · San Francisco Bay
At a glance
- Permit Evidence: SMARTS record
- Active Industrial
- Notice of Intent (WDID code I) · Permits and applications
- Location Evidence: facility-reported
- Napa, Napa County
- Region 2 · San Francisco Bay · Location · Statewide map
- Receiving water
- Napa River (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
- None
- Monitoring results Evidence: facility-reported
- 325 distinct results, 11 reporting years (2015 to 2025)
- Most recent sample Apr 23, 2026 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 1 inspection · 3 violation records · 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
- 38.265034, -122.263346
- 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
- 2301 Napa Vallejo Highway, Napa 94558
- Regional Water Board
- 2 — San Francisco Bay
HUC12 watershed Evidence: spatial
- Tulucay Creek-Frontal San Pablo Bay Estuaries HUC12 180500020402
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
- SYAR Industries Inc
- Primary industry (SIC)
- 1429-Crushed and Broken Stone, NEC
- Secondary SIC
- 2951-Asphalt Paving Mixtures and Blocks
- Application ID
- 275352
- NOI processed
- Apr 07, 1992
- Last certified
- Dec 13, 2024
- Facility size
- 750 Acres
- Impervious area
- 15 %
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 275352 | Industrial | Active | Apr 07, 1992 | — | Dec 13, 2024 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Napa River
- 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 (1)
- C1 name is only a prefix of official names
3 official waterbodies share 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.
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.
325 distinct measurements across 14 parameters, most recent sample Apr 23, 2026.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2025 | 35 | 7 | 0 | Nov 18, 2025 | Apr 23, 2026 |
| 2024 | 7 | 7 | 0 | Nov 25, 2024 | Nov 25, 2024 |
| 2023 | 7 | 7 | 0 | Dec 27, 2023 | Dec 27, 2023 |
| 2022 | 7 | 7 | 0 | Dec 20, 2022 | Dec 20, 2022 |
| 2021 | 21 | 7 | 0 | Oct 25, 2021 | Dec 13, 2021 |
| 2020 | 35 | 7 | 0 | Nov 17, 2020 | Mar 18, 2021 |
| 2019 | 14 | 7 | 0 | Dec 09, 2019 | Feb 19, 2020 |
| 2018 | 42 | 7 | 0 | Nov 29, 2018 | May 20, 2019 |
| 2017 | 38 | 10 | 0 | Aug 07, 2017 | Mar 02, 2018 |
| 2016 | 22 | 12 | 0 | Oct 28, 2016 | Dec 12, 2016 |
| 2015 | 97 | 12 | 0 | Jul 17, 2015 | Mar 16, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Aluminum, Total | mg/L | 43 | 0 | Jul 17, 2015 | Apr 23, 2026 | Results |
| Iron, Total | mg/L | 43 | 0 | Jul 17, 2015 | Apr 23, 2026 | Results |
| Nitrite Plus Nitrate (as N) | mg/L | 43 | 1 | Jul 17, 2015 | Apr 23, 2026 | Results |
| pH | SU | 43 | 0 | Jul 17, 2015 | Apr 23, 2026 | Results |
| Total Suspended Solids (TSS) | mg/L | 43 | 3 | Jul 17, 2015 | Apr 23, 2026 | Results |
| Oil and Grease | mg/L | 42 | 42 | Jul 17, 2015 | Apr 23, 2026 | Results |
| Magnesium, Total | mg/L | 24 | 0 | Nov 29, 2018 | Apr 23, 2026 | Results |
| Zinc, Total | mg/L | 15 | 10 | Jul 17, 2015 | Aug 21, 2017 | Results |
| Chemical Oxygen Demand (COD) | mg/L | 14 | 4 | Jul 17, 2015 | Aug 21, 2017 | Results |
| Copper, Total | mg/L | 5 | 3 | Mar 16, 2016 | Aug 21, 2017 | Results |
| Hardness, Total (as CaCO3) | mg/L | 4 | 0 | Oct 28, 2016 | Aug 21, 2017 | Results |
| Nitrate, Total (as N) | mg/L | 2 | 0 | Dec 11, 2015 | Oct 28, 2016 | Results |
Show 2 more parameters
All results (325 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Apr 23, 2026 | Aluminum, Total | .676 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1372756 | |
| Apr 23, 2026 | Iron, Total | 1.18 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1372756 | |
| Apr 23, 2026 | Magnesium, Total | 8.76 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1372756 | |
| Apr 23, 2026 | Nitrite Plus Nitrate (as N) | .004 | mg/L | Effluent | Qualifying Storm Event | A4500F | 1372756 | |
| Apr 23, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1372756 | |
| Apr 23, 2026 | pH | 6.5 | SU | Effluent | Qualifying Storm Event | pH_Field | 1372756 | |
| Apr 23, 2026 | Total Suspended Solids (TSS) | 7.6 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1372756 | |
| Feb 17, 2026 | Aluminum, Total | .229 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1366988 | |
| Feb 17, 2026 | Iron, Total | .396 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1366988 | |
| Feb 17, 2026 | Magnesium, Total | 8.54 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1366988 | |
| Feb 17, 2026 | Nitrite Plus Nitrate (as N) | .069 | mg/L | Effluent | Qualifying Storm Event | A4500F | 1366988 | |
| Feb 17, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1366988 | |
| Feb 17, 2026 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Field | 1366988 | |
| Feb 17, 2026 | Total Suspended Solids (TSS) | 6.4 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1366988 | |
| Dec 29, 2025 | Aluminum, Total | 2.65 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1363097 | |
| Dec 29, 2025 | Aluminum, Total | 11.3 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1363097 | |
| Dec 29, 2025 | Iron, Total | 6.03 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1363097 | |
| Dec 29, 2025 | Iron, Total | 22.5 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1363097 | |
| Dec 29, 2025 | Magnesium, Total | 7.18 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1363097 | |
| Dec 29, 2025 | Magnesium, Total | 6.46 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1363097 | |
| Dec 29, 2025 | Nitrite Plus Nitrate (as N) | .17 | mg/L | Effluent | Qualifying Storm Event | A4500F | 1363097 | |
| Dec 29, 2025 | Nitrite Plus Nitrate (as N) | 1.3 | mg/L | Effluent | Qualifying Storm Event | A4500F | 1363097 | |
| Dec 29, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1363097 | |
| Dec 29, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1363097 | |
| Dec 29, 2025 | pH | 7.3 | SU | Effluent | Qualifying Storm Event | pH_Field | 1363097 | |
| Dec 29, 2025 | pH | 7.7 | SU | Effluent | Qualifying Storm Event | pH_Field | 1363097 | |
| Dec 29, 2025 | Total Suspended Solids (TSS) | 30 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1363097 | |
| Dec 29, 2025 | Total Suspended Solids (TSS) | 3.6 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1363097 | |
| Nov 18, 2025 | Aluminum, Total | .5 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1358388 | |
| Nov 18, 2025 | Iron, Total | .841 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1358388 | |
| Nov 18, 2025 | Magnesium, Total | 14.4 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1358388 | |
| Nov 18, 2025 | Nitrite Plus Nitrate (as N) | 1.6 | mg/L | Effluent | Qualifying Storm Event | A4500F | 1358388 | |
| Nov 18, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1358388 | |
| Nov 18, 2025 | pH | 6.8 | SU | Effluent | Qualifying Storm Event | pH_Field | 1358388 | |
| Nov 18, 2025 | Total Suspended Solids (TSS) | 9.2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1358388 | |
| Nov 25, 2024 | Aluminum, Total | 4.3 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1317334 | |
| Nov 25, 2024 | Iron, Total | 10 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1317334 | |
| Nov 25, 2024 | Magnesium, Total | 7.8 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1317334 | |
| Nov 25, 2024 | Nitrite Plus Nitrate (as N) | .62 | mg/L | Effluent | Qualifying Storm Event | A4500F | 1317334 | |
| Nov 25, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1317334 | |
| Nov 25, 2024 | pH | 8.28 | SU | Effluent | Qualifying Storm Event | pH_Field | 1317334 | |
| Nov 25, 2024 | Total Suspended Solids (TSS) | 20.6 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1317334 | |
| Dec 27, 2023 | Aluminum, Total | 1.6 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1288785 | |
| Dec 27, 2023 | Iron, Total | 3.3 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1288785 | |
| Dec 27, 2023 | Magnesium, Total | 9.9 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1288785 | |
| Dec 27, 2023 | Nitrite Plus Nitrate (as N) | .52 | mg/L | Effluent | Qualifying Storm Event | A4500F | 1288785 | |
| Dec 27, 2023 | Oil and Grease | < 2.4 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1288785 | |
| Dec 27, 2023 | pH | 8.04 | SU | Effluent | Qualifying Storm Event | pH_Field | 1288785 | |
| Dec 27, 2023 | Total Suspended Solids (TSS) | 5 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1288785 | |
| Dec 20, 2022 | Aluminum, Total | 1.8 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1221243 |
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 | 3 | 3 Violation · 0 Potential (preliminary) · 0 Dismissed | Jun 12, 2002 – Jul 15, 2021 | Oct 21, 2026 | All violations |
| Enforcement actions | 1 | 1 issued · 0 draft · 0 withdrawn, rescinded or superseded | Oct 21, 2021 – Oct 21, 2021 | Oct 21, 2026 | All actions |
| Inspections | 1 | inspections, not findings | Feb 15, 2018 – Feb 15, 2018 | 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 06, 2026 | Annual reports | 1336643 | Annual report 2025 | — | |
| Jul 15, 2025 | Annual reports | 1295513 | Annual report 2024 | — | |
| Jul 11, 2024 | Annual reports | 1244663 | Annual report 2023 | — | |
| Jul 10, 2023 | Annual reports | 1190732 | Annual report 2022 | — | |
| Jul 12, 2022 | Annual reports | 1114231 | Annual report 2021 | — | |
| Oct 21, 2021 | Enforcement actions | 441856 | NNC (Notice of Non-Compliance) | Active | |
| Jul 15, 2021 | Violations | 877959 | Late Report | Violation | Report |
| Jul 08, 2021 | Annual reports | 1070308 | Annual report 2020 | — | |
| Jun 30, 2020 | Annual reports | 987687 | Annual report 2019 | — | |
| Jul 09, 2019 | Annual reports | 955305 | Annual report 2018 | — | |
| Jul 12, 2018 | Annual reports | 940725 | Annual report 2017 | — | |
| Feb 15, 2018 | Inspections | 2038629 | B Type compliance | — | No Further Action |
| Jul 05, 2017 | Annual reports | 880072 | Annual report 2016 | — | |
| Jul 07, 2016 | Annual reports | 842657 | Annual report 2015 | — | |
| Jun 12, 2002 | Violations | 214274 | Deficient BMP Implementation | Violation | Complaint |
| Jun 12, 2002 | Violations | 219976 | Deficient Report | Violation | Complaint |
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.