Cobham Advanced Electronic Solutions
Active WDID 2 43I021844 San Jose, 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
- San Jose, Santa Clara County
- Region 2 · San Francisco Bay · Location · Statewide map
- Receiving water
- Coyote Creek (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; 1 on the 2026 303(d) list
- Proximity only; not a discharge pathway · Nearby waterbodies
- Monitoring results Evidence: facility-reported
- 259 distinct results, 11 reporting years (2015 to 2025)
- Most recent sample Mar 31, 2026 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 1 inspection · 2 violation records · 2 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
- 37.2682, -121.78945
- Precision
- 4 decimal places
- Shared point
- 2 permits report this exact point
- Matches application record
- same
Facility location as reported by the discharger in SMARTS; not a discharge point or outfall.
- Facility address
- 5300 Hellyer Ave, San Jose 95138
- Regional Water Board
- 2 — San Francisco Bay
HUC12 watershed Evidence: spatial
- Metcalfe Canyon-Coyote Creek HUC12 180500030202
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
- Cobham Advanced Electronic Solutions
- Primary industry (SIC)
- 3674-Semiconductors and Related Devices
- Application ID
- 352896
- NOI processed
- Oct 02, 2008
- Last certified
- Dec 16, 2021
- Facility size
- 10.25 Acres
- Impervious area
- 73 %
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 352896 | Industrial | Active | Oct 02, 2008 | — | Dec 16, 2021 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Coyote Creek
- Discharges directly / indirectly
- Y / N (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 (3)
- C2 candidate in another or unknown Regional Board
- C3 facility HUC12 not corroborated (complete published list)
- C4 candidate more than 5 km away
1 official waterbody shares 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 |
|---|---|---|---|
| Coyote Creek (Santa Clara Co.) CAR2053002119990218112824 | 515 m | listed | 9 |
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.
259 distinct measurements across 6 parameters, most recent sample Mar 31, 2026.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2025 | 30 | 5 | 0 | Nov 13, 2025 | Mar 31, 2026 |
| 2024 | 20 | 5 | 0 | Feb 06, 2025 | Feb 13, 2025 |
| 2023 | 10 | 5 | 0 | Mar 29, 2024 | Mar 29, 2024 |
| 2022 | 16 | 4 | 0 | Nov 01, 2022 | Mar 21, 2023 |
| 2021 | 30 | 5 | 0 | Oct 22, 2021 | Apr 19, 2022 |
| 2020 | 8 | 4 | 0 | Mar 18, 2021 | Mar 18, 2021 |
| 2019 | 10 | 5 | 0 | May 12, 2020 | May 12, 2020 |
| 2018 | 30 | 5 | 0 | Jan 14, 2019 | Apr 05, 2019 |
| 2017 | 29 | 5 | 0 | Jan 03, 2018 | Mar 21, 2018 |
| 2016 | 36 | 6 | 0 | Oct 28, 2016 | Mar 20, 2017 |
| 2015 | 40 | 6 | 0 | Nov 09, 2015 | Jan 19, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Oil and Grease | mg/L | 54 | 22 | Nov 09, 2015 | Mar 31, 2026 | Results |
| pH | SU | 54 | 0 | Nov 09, 2015 | Mar 31, 2026 | Results |
| Total Suspended Solids (TSS) | mg/L | 53 | 4 | Nov 09, 2015 | Mar 31, 2026 | Results |
| Total Organic Carbon (TOC) | mg/L | 50 | 2 | Nov 09, 2015 | Mar 31, 2026 | Results |
| Total Suspended Solids (TSS), Net Value | mg/L | 34 | 2 | Jan 06, 2016 | Mar 31, 2026 | Results |
| Electrical Conductivity @ 25 Deg. C | umhos/cm | 14 | 0 | Nov 09, 2015 | Mar 20, 2017 | Results |
All results (259 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Mar 31, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1371661 | |
| Mar 31, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1371661 | |
| Mar 31, 2026 | pH | 7.79 | SU | Effluent | Qualifying Storm Event | pH_Field | 1371661 | |
| Mar 31, 2026 | pH | 7.81 | SU | Effluent | Qualifying Storm Event | pH_Field | 1371661 | |
| Mar 31, 2026 | Total Organic Carbon (TOC) | 10.9 | mg/L | Effluent | Qualifying Storm Event | A5310C | 1371661 | |
| Mar 31, 2026 | Total Organic Carbon (TOC) | 4.73 | mg/L | Effluent | Qualifying Storm Event | A5310C | 1371661 | |
| Mar 31, 2026 | Total Suspended Solids (TSS) | 16 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1371661 | |
| Mar 31, 2026 | Total Suspended Solids (TSS) | 2.8 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1371661 | |
| Mar 31, 2026 | Total Suspended Solids (TSS), Net Value | 16 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1371661 | |
| Mar 31, 2026 | Total Suspended Solids (TSS), Net Value | 2.8 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1371661 | |
| Feb 16, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1369021 | |
| Feb 16, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1369021 | |
| Feb 16, 2026 | pH | 7.78 | SU | Effluent | Qualifying Storm Event | pH_Field | 1369021 | |
| Feb 16, 2026 | pH | 7.89 | SU | Effluent | Qualifying Storm Event | pH_Field | 1369021 | |
| Feb 16, 2026 | Total Organic Carbon (TOC) | .912 | mg/L | Effluent | Qualifying Storm Event | A5310C | 1369021 | |
| Feb 16, 2026 | Total Organic Carbon (TOC) | .912 | mg/L | Effluent | Qualifying Storm Event | A5310C | 1369021 | |
| Feb 16, 2026 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 1369021 | |
| Feb 16, 2026 | Total Suspended Solids (TSS) | 1.4 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1369021 | |
| Feb 16, 2026 | Total Suspended Solids (TSS), Net Value | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 1369021 | |
| Feb 16, 2026 | Total Suspended Solids (TSS), Net Value | 1.4 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1369021 | |
| Nov 13, 2025 | Oil and Grease | 2.2 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1359691 | |
| Nov 13, 2025 | Oil and Grease | 2.1 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1359691 | |
| Nov 13, 2025 | pH | 6.9 | SU | Effluent | Qualifying Storm Event | pH_Field | 1359691 | |
| Nov 13, 2025 | pH | 7.2 | SU | Effluent | Qualifying Storm Event | pH_Field | 1359691 | |
| Nov 13, 2025 | Total Organic Carbon (TOC) | .694 | mg/L | Effluent | Qualifying Storm Event | A5310C | 1359691 | |
| Nov 13, 2025 | Total Organic Carbon (TOC) | .738 | mg/L | Effluent | Qualifying Storm Event | A5310C | 1359691 | |
| Nov 13, 2025 | Total Suspended Solids (TSS) | 3 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1359691 | |
| Nov 13, 2025 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 1359691 | |
| Nov 13, 2025 | Total Suspended Solids (TSS), Net Value | 3 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1359691 | |
| Nov 13, 2025 | Total Suspended Solids (TSS), Net Value | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 1359691 | |
| Feb 13, 2025 | Oil and Grease | 3.3 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1325482 | |
| Feb 13, 2025 | Oil and Grease | > .2 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1325482 | |
| Feb 13, 2025 | pH | 7.31 | SU | Effluent | Qualifying Storm Event | pH_Field | 1325482 | |
| Feb 13, 2025 | pH | 7.48 | SU | Effluent | Qualifying Storm Event | pH_Field | 1325482 | |
| Feb 13, 2025 | Total Organic Carbon (TOC) | 7.47 | mg/L | Effluent | Qualifying Storm Event | A5310C | 1325482 | |
| Feb 13, 2025 | Total Organic Carbon (TOC) | .999 | mg/L | Effluent | Qualifying Storm Event | A5310C | 1325482 | |
| Feb 13, 2025 | Total Suspended Solids (TSS) | 42 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1325482 | |
| Feb 13, 2025 | Total Suspended Solids (TSS) | > 1 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1325482 | |
| Feb 13, 2025 | Total Suspended Solids (TSS), Net Value | 42 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1325482 | |
| Feb 13, 2025 | Total Suspended Solids (TSS), Net Value | > 1 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1325482 | |
| Feb 06, 2025 | Oil and Grease | 2.1 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1325472 | |
| Feb 06, 2025 | Oil and Grease | > 1.7 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1325472 | |
| Feb 06, 2025 | pH | 7.28 | SU | Effluent | Qualifying Storm Event | pH_Field | 1325472 | |
| Feb 06, 2025 | pH | 7.2 | SU | Effluent | Qualifying Storm Event | pH_Field | 1325472 | |
| Feb 06, 2025 | Total Organic Carbon (TOC) | 3.91 | mg/L | Effluent | Qualifying Storm Event | A5310C | 1325472 | |
| Feb 06, 2025 | Total Organic Carbon (TOC) | 2.56 | mg/L | Effluent | Qualifying Storm Event | A5310C | 1325472 | |
| Feb 06, 2025 | Total Suspended Solids (TSS) | 21 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1325472 | |
| Feb 06, 2025 | Total Suspended Solids (TSS) | 1.7 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1325472 | |
| Feb 06, 2025 | Total Suspended Solids (TSS), Net Value | 21 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1325472 | |
| Feb 06, 2025 | Total Suspended Solids (TSS), Net Value | 1.7 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1325472 |
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 | 2 | 2 Violation · 0 Potential (preliminary) · 0 Dismissed | Aug 15, 2015 – Jul 15, 2020 | Oct 21, 2026 | All violations |
| Enforcement actions | 2 | 2 issued · 0 draft · 0 withdrawn, rescinded or superseded | Oct 30, 2015 – Jul 21, 2020 | Oct 21, 2026 | All actions |
| Inspections | 1 | inspections, not findings | Mar 27, 2019 – Mar 27, 2019 | Oct 21, 2026 | All inspections |
| Annual reports | 10 | 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 (15 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Apr 21, 2026 | Annual reports | 1335548 | Annual report 2025 | — | |
| Mar 19, 2025 | Annual reports | 1294373 | Annual report 2024 | — | |
| Jul 15, 2024 | Annual reports | 1243467 | Annual report 2023 | — | |
| Jul 13, 2023 | Annual reports | 1189482 | Annual report 2022 | — | |
| Jul 15, 2022 | Annual reports | 1112877 | Annual report 2021 | — | |
| Jun 18, 2021 | Annual reports | 1068893 | Annual report 2020 | — | |
| Jul 22, 2020 | Annual reports | 986170 | Annual report 2019 | — | |
| Jul 21, 2020 | Enforcement actions | 438090 | 1st NNC - AR (First Notice of Non-Compliance (annual report)) | Historical | |
| Jul 15, 2020 | Violations | 874427 | Late Report | Violation | Report |
| Mar 27, 2019 | Inspections | 2041941 | B Type compliance | — | No Further Action |
| Jul 16, 2018 | Annual reports | 939152 | Annual report 2017 | — | |
| Jun 27, 2017 | Annual reports | 878405 | Annual report 2016 | — | |
| Jul 06, 2016 | Annual reports | 846215 | Annual report 2015 | — | |
| Oct 30, 2015 | Enforcement actions | 421282 | NNC (Notice of Non-Compliance) | Active | |
| Aug 15, 2015 | Violations | 858961 | Failure to Obtain Permit | 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.