County page
Santa Clara County
Santa Clara County currently shows 21 Superfund sites, 367 imported facility profiles, and 29,776 lbs in loaded TRI releases.
Overview
What this county page is saying
This live county page is generated from the ingested EPA datasets. It merges ECHO facility compliance rows, TRI release totals, and any Superfund sites attached to Santa Clara County.
The latest loaded TRI year is 2024, with 29,776 lbs in county-level on-site releases tied to the imported facility set.
Focus points
Design and product notes
County pages combine facility compliance history with chemical release totals.
TRI chemistry shows what is being reported, while ECHO shows who keeps drawing enforcement attention.
Superfund records add legacy cleanup context even when live contaminant detail is still sparse.
Superfund layer
Cleanup sites in this county
Advanced Micro Devices Inc
Advanced Micro Devices Inc is in EPA's Superfund layer for Sunnyvale, CA. Live ingestion currently includes the official EPA detail links and geocoded site record.
Advanced Micro Devices Inc Building 915
Advanced Micro Devices Inc Building 915 is in EPA's Superfund layer for Sunnyvale, CA. Live ingestion currently includes the official EPA detail links and geocoded site record.
Applied Materials
Applied Materials is in EPA's Superfund layer for Santa Clara, CA. Live ingestion currently includes the official EPA detail links and geocoded site record.
Cts Printex Inc
Cts Printex Inc is in EPA's Superfund layer for Mountain View, CA. Live ingestion currently includes the official EPA detail links and geocoded site record.
Fairchild Semiconductor Corp Mountain View Plant
Fairchild Semiconductor Corp Mountain View Plant is in EPA's Superfund layer for Mountain View, CA. Live ingestion currently includes the official EPA detail links and geocoded site record.
Fairchild Semiconductor Corp South San Jose Plant
Fairchild Semiconductor Corp South San Jose Plant is in EPA's Superfund layer for San Jose, CA. Live ingestion currently includes the official EPA detail links and geocoded site record.
Hewlett Packard 620 640 Page Mill Road
Hewlett Packard 620 640 Page Mill Road is in EPA's Superfund layer for Palo Alto, CA. Live ingestion currently includes the official EPA detail links and geocoded site record.
Intel Corp Mountain View Plant
Intel Corp Mountain View Plant is in EPA's Superfund layer for Mountain View, CA. Live ingestion currently includes the official EPA detail links and geocoded site record.
Intel Magnetics
Intel Magnetics is in EPA's Superfund layer for Santa Clara, CA. Live ingestion currently includes the official EPA detail links and geocoded site record.
Intersil Inc Siemens Components
Intersil Inc Siemens Components is in EPA's Superfund layer for Cupertino, CA. Live ingestion currently includes the official EPA detail links and geocoded site record.
Lorentz Barrel Drum Co
Lorentz Barrel Drum Co is in EPA's Superfund layer for San Jose, CA. Live ingestion currently includes the official EPA detail links and geocoded site record.
Moffett Field Naval Air Station
Moffett Field Naval Air Station is in EPA's Superfund layer for Moffett Field, CA. Live ingestion currently includes the official EPA detail links and geocoded site record.
Facilities
Worst polluters and compliance pressure
Northrop Grumman Marine Systems
Significant Violation across 12 of the last 12 quarters, with $44,000 in recorded penalties.
Lehigh Southwest Cement Company
Significant Violation across 12 of the last 12 quarters, with $501,810 in recorded penalties.
International Disposal Corporation of
Significant Violation across 12 of the last 12 quarters, with $181,000 in recorded penalties.
Kirby Canyon Recycling & Disposal
Significant Violation across 12 of the last 12 quarters, with $149,000 in recorded penalties.
Kinder Morgan San Jose Terminal
Significant Violation across 12 of the last 12 quarters, with $94,810 in recorded penalties.
Guadalupe Disposal Site Landfill
Significant Violation across 12 of the last 12 quarters, with $29,000 in recorded penalties.
Sunnyvale Water Pollution Control Plant
Violation Identified across 11 of the last 12 quarters, with $93,500 in recorded penalties.
City of Sunnyvale Wtr Pollution
Significant Violation across 12 of the last 12 quarters, with $30,000 in recorded penalties.
Micrel Synergy Semiconductor
Significant noncompliance across 10 of the last 12 quarters, with $522,566 in recorded penalties.
City of Sunnyvale/public Works Dept
Significant Violation across 12 of the last 12 quarters, with $16,000 in recorded penalties.
San Jose/santa Clara Water Pollution Control Plant
Significant Violation across 12 of the last 12 quarters, with $6,000 in recorded penalties.
915 Deguigne Drive Groundwater Treatment System
Violation Identified across 12 of the last 12 quarters, with $9,000 in recorded penalties.
National Aeronautics & Space Administ Ames Research Center
Violation across 12 of the last 12 quarters, with $3,000 in recorded penalties.
City of Santa Clara, Silicon Valley Powe
Significant Violation across 12 of the last 12 quarters, with $1,500 in recorded penalties.
San Jose State University (cogen Plant)
Significant Violation across 12 of the last 12 quarters, with $1,000 in recorded penalties.
Western Digital Technologies Inc
Significant Violation across 12 of the last 12 quarters in the imported ECHO record.
Hill Brothers Chemical Co.
Violation Identified across 12 of the last 12 quarters in the imported ECHO record.
Clean Harbors San Jose
Significant Violation across 5 of the last 12 quarters, with $87,000 in recorded penalties.
Owens Corning
Significant Violation across 12 of the last 12 quarters in the imported ECHO record.
Advanced Chemical Transport Llc
Significant noncompliance across 6 of the last 12 quarters, with $15,000 in recorded penalties.
| Chemical | Group | Facilities | Total pounds |
|---|---|---|---|
| N-Methyl-2-pyrrolidone | TRI-listed chemical | 4 | 5,751 lbs |
| Acetonitrile | TRI-listed chemical | 2 | 3,738 lbs |
| Ammonia | TRI-listed chemical | 3 | 2,228 lbs |
| Formaldehyde | TRI-listed chemical | 2 | 506 lbs |
| Toluene | Volatile organic compound | 2 | 485 lbs |
| Xylene (mixed isomers) | Volatile organic compound | 1 | 259 lbs |
| Pyridine | TRI-listed chemical | 1 | 106 lbs |
| 1, 2, 4-Trimethylbenzene | Volatile organic compound | 1 | 94 lbs |
| Benzene | Volatile organic compound | 1 | 70 lbs |
| Nitric acid | TRI-listed chemical | 7 | 20 lbs |
| Ethylbenzene | Volatile organic compound | 1 | 16 lbs |
| Cyclohexane | TRI-listed chemical | 1 | 11 lbs |
| Zinc compounds | TRI-listed chemical | 1 | 9 lbs |
| Naphthalene | TRI-listed chemical | 1 | 6 lbs |
| Barium | TRI-listed chemical | 1 | 4 lbs |
| N, N-Dimethylformamide | TRI-listed chemical | 1 | 2 lbs |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | TRI-listed chemical | 1 | 1 lbs |
| Cumene | TRI-listed chemical | 1 | 1 lbs |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | Metals and metal compounds | 1 | 1 lbs |
| Lead | Metals and metal compounds | 4 | 0 lbs |
Violation pages
State-level violation context tied to this county
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Clean Air Act violations in California
California facilities in the imported ECHO data show air-program oversight, inspections, or noncompliance signals.
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Clean Water Act violations in California
California facilities in the imported ECHO data show water-permit pressure, inspections, or noncompliance signals.
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RCRA violations in California
California facilities in the imported ECHO data show hazardous-waste or RCRA oversight signals.