Hammon Plating
Active WDID 2 43I010827 Palo Alto, Santa Clara 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
- Palo Alto, Santa Clara County
- Region 2 · San Francisco Bay · Location · Statewide map
- Receiving water
- San Francisco Bay (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
- 1 waterbody; 0 on the 2026 303(d) list
- Proximity only; not a discharge pathway · Nearby waterbodies
- Monitoring results Evidence: facility-reported
- 236 distinct results, 7 reporting years (2019 to 2025)
- Most recent sample Apr 14, 2026 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 1 inspection · 5 violation records · 9 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
- 37.42342, -122.10006
- 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
- 890 Commercial St, Palo Alto 94303
- Regional Water Board
- 2 — San Francisco Bay
HUC12 watershed Evidence: spatial
- Permanente Creek-Frontal San Francisco Bay Estuaries HUC12 180500030406
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
- Hammon Plating
- Primary industry (SIC)
- 3471-Electroplating, Plating, Polishing, Anodizing, and Coloring
- Application ID
- 184027
- NOI processed
- Dec 30, 1993
- Last certified
- Nov 21, 2022
- Facility size
- 0.67 Acres
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 184027 | Industrial | Active | Dec 30, 1993 | — | Nov 21, 2022 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- San Francisco Bay
- 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.
| Waterbody (2026 Integrated Report) | Distance | 2026 303(d) list | Appendix A decisions |
|---|---|---|---|
| Adobe Creek (Santa Clara County) CAR2055004020120608111423 | 479 m | not listed | 0 |
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.
236 distinct measurements across 7 parameters, most recent sample Apr 14, 2026.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2025 | 42 | 7 | 0 | Nov 13, 2025 | Apr 14, 2026 |
| 2024 | 63 | 7 | 0 | Nov 22, 2024 | Mar 12, 2025 |
| 2023 | 56 | 7 | 0 | Dec 06, 2023 | Mar 29, 2024 |
| 2022 | 40 | 7 | 0 | Dec 31, 2022 | Feb 27, 2023 |
| 2021 | 7 | 7 | 0 | Dec 13, 2021 | Dec 13, 2021 |
| 2020 | 14 | 7 | 0 | Jan 27, 2021 | Jan 27, 2021 |
| 2019 | 14 | 7 | 0 | Dec 18, 2019 | Jan 16, 2020 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Aluminum, Total | mg/L | 34 | 7 | Dec 18, 2019 | Apr 14, 2026 | Results |
| Iron, Total | mg/L | 34 | 20 | Dec 18, 2019 | Apr 14, 2026 | Results |
| Nitrite Plus Nitrate (as N) | mg/L | 34 | 2 | Dec 18, 2019 | Apr 14, 2026 | Results |
| Oil and Grease | mg/L | 34 | 33 | Dec 18, 2019 | Apr 14, 2026 | Results |
| pH | SU | 34 | 0 | Dec 18, 2019 | Apr 14, 2026 | Results |
| Zinc, Total | mg/L | 34 | 17 | Dec 18, 2019 | Apr 14, 2026 | Results |
| Total Suspended Solids (TSS) | mg/L | 32 | 26 | Dec 18, 2019 | Apr 14, 2026 | Results |
All results (236 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Apr 14, 2026 | Aluminum, Total | .0369 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1377186 | |
| Apr 14, 2026 | Iron, Total | .0327 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1377186 | |
| Apr 14, 2026 | Nitrite Plus Nitrate (as N) | .12 | mg/L | Effluent | Qualifying Storm Event | A4500F | 1377186 | |
| Apr 14, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1377186 | |
| Apr 14, 2026 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1377186 | |
| Apr 14, 2026 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 1377186 | |
| Apr 14, 2026 | Zinc, Total | .0204 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1377186 | |
| Apr 10, 2026 | Aluminum, Total | .0425 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1377186 | |
| Apr 10, 2026 | Iron, Total | DNQ .029 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1377186 | |
| Apr 10, 2026 | Nitrite Plus Nitrate (as N) | .11 | mg/L | Effluent | Qualifying Storm Event | A4500F | 1377186 | |
| Apr 10, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1377186 | |
| Apr 10, 2026 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1377186 | |
| Apr 10, 2026 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 1377186 | |
| Apr 10, 2026 | Zinc, Total | .0436 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1377186 | |
| Feb 17, 2026 | Aluminum, Total | DNQ .0185 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1367606 | |
| Feb 17, 2026 | Aluminum, Total | .0418 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1367606 | |
| Feb 17, 2026 | Iron, Total | DNQ .0472 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1367606 | |
| Feb 17, 2026 | Iron, Total | .0708 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1367606 | |
| Feb 17, 2026 | Nitrite Plus Nitrate (as N) | .41 | mg/L | Effluent | Qualifying Storm Event | A4500F | 1367606 | |
| Feb 17, 2026 | Nitrite Plus Nitrate (as N) | .38 | mg/L | Effluent | Qualifying Storm Event | A4500F | 1367606 | |
| Feb 17, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1367606 | |
| Feb 17, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1367606 | |
| Feb 17, 2026 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1367606 | |
| Feb 17, 2026 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1367606 | |
| Feb 17, 2026 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 1367606 | |
| Feb 17, 2026 | Total Suspended Solids (TSS) | 1 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1367606 | |
| Feb 17, 2026 | Zinc, Total | DNQ .0119 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1367606 | |
| Feb 17, 2026 | Zinc, Total | .0218 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1367606 | |
| Nov 13, 2025 | Aluminum, Total | .027 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1362909 | |
| Nov 13, 2025 | Aluminum, Total | .0259 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1362909 | |
| Nov 13, 2025 | Iron, Total | DNQ .0483 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1362909 | |
| Nov 13, 2025 | Iron, Total | DNQ .0438 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1362909 | |
| Nov 13, 2025 | Nitrite Plus Nitrate (as N) | .23 | mg/L | Effluent | Qualifying Storm Event | A4500F | 1362909 | |
| Nov 13, 2025 | Nitrite Plus Nitrate (as N) | .22 | mg/L | Effluent | Qualifying Storm Event | A4500F | 1362909 | |
| Nov 13, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1362909 | |
| Nov 13, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1362909 | |
| Nov 13, 2025 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1362909 | |
| Nov 13, 2025 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1362909 | |
| Nov 13, 2025 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 1362909 | |
| Nov 13, 2025 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 1362909 | |
| Nov 13, 2025 | Zinc, Total | DNQ .0165 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1362909 | |
| Nov 13, 2025 | Zinc, Total | ND | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1362909 | |
| Mar 12, 2025 | Aluminum, Total | .016 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1328943 | |
| Mar 12, 2025 | Aluminum, Total | .019 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1328943 | |
| Mar 12, 2025 | Iron, Total | ND | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1328943 | |
| Mar 12, 2025 | Iron, Total | ND | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1328943 | |
| Mar 12, 2025 | Nitrite Plus Nitrate (as N) | .26 | mg/L | Effluent | Qualifying Storm Event | A4500F | 1328943 | |
| Mar 12, 2025 | Nitrite Plus Nitrate (as N) | .27 | mg/L | Effluent | Qualifying Storm Event | A4500F | 1328943 | |
| Mar 12, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1328943 | |
| Mar 12, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1328943 |
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 | 5 | 5 Violation · 0 Potential (preliminary) · 0 Dismissed | Jul 02, 1999 – Jul 15, 2020 | Oct 21, 2026 | All violations |
| Enforcement actions | 9 | 9 issued · 0 draft · 0 withdrawn, rescinded or superseded | Aug 06, 2007 – Jul 21, 2020 | Oct 21, 2026 | All actions |
| Inspections | 1 | inspections, not findings | Jan 05, 2011 – Jan 05, 2011 | 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 (26 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jul 15, 2026 | Annual reports | 1333907 | Annual report 2025 | — | |
| Jul 01, 2025 | Annual reports | 1292668 | Annual report 2024 | — | |
| Jul 12, 2024 | Annual reports | 1241655 | Annual report 2023 | — | |
| Jul 10, 2023 | Annual reports | 1187573 | Annual report 2022 | — | |
| Jul 13, 2022 | Annual reports | 1110814 | Annual report 2021 | — | |
| Jul 14, 2021 | Annual reports | 1066731 | Annual report 2020 | — | |
| Sep 10, 2020 | Annual reports | 983867 | Annual report 2019 | — | |
| Jul 21, 2020 | Enforcement actions | 438081 | 1st NNC - AR (First Notice of Non-Compliance (annual report)) | Historical | |
| Jul 15, 2020 | Violations | 874419 | Late Report | Violation | Report |
| Jul 17, 2019 | Annual reports | 951359 | Annual report 2018 | — | |
| Jun 19, 2018 | Annual reports | 936765 | Annual report 2017 | — | |
| Sep 18, 2017 | Annual reports | 844064 | Annual report 2015 | — | |
| Sep 18, 2017 | Annual reports | 875892 | Annual report 2016 | — | |
| Jan 30, 2014 | Enforcement actions | 415061 | 1st NNC - AR (First Notice of Non-Compliance (annual report)) | Historical | |
| Jul 02, 2013 | Violations | 854254 | Late Report | Violation | Report |
| Jan 31, 2011 | Enforcement actions | 404496 | EPL (Expedited Payment Letter) | Historical | |
| Jan 05, 2011 | Inspections | 2010330 | B Type compliance | — | No Further Action |
| Sep 30, 2010 | Enforcement actions | 402974 | NOV (Notice of Violation) | Active | |
| Jul 02, 2010 | Violations | 842723 | Late Report | Violation | Report |
| Oct 03, 2008 | Enforcement actions | 353434 | ACL (Administrative Civil Liability) | Historical | R2-2008-0035 replaced to R2-2008-0095 |
| Mar 11, 2008 | Enforcement actions | 358195 | Verbal Communication | Historical | |
| Jan 29, 2008 | Enforcement actions | 358189 | Verbal Communication | Historical | |
| Nov 13, 2007 | Enforcement actions | 358188 | NNC (Notice of Non-Compliance) | Historical | |
| Aug 06, 2007 | Enforcement actions | 357159 | NNC (Notice of Non-Compliance) | Historical | |
| Jul 02, 2007 | Violations | 788814 | 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.