Non-Compliance
Clean Water Act
CUPERTINO QUARRY
Quick Summary
- •Currently out of compliance in at least one environmental program (CAA, CWA, or RCRA).
- •Assessed $0 in total penalties since records began.
- Address
-
12100 STEVENS CANYON RD
CUPERTINO, CA 95014
View on map ↗ - County
- SANTA CLARA County
- Total Penalties
- $0
- Registry ID
- 110071081460
Compliance Status (Last 12 Quarters)
Number of calendar quarters, out of the last 12, in which this facility was in violation of its permit. Zero means no recorded violations in that program over the past three years.
12
Water (CWA)
Qtrs Non-Compliant
Qtrs Non-Compliant
Discharge Limit Exceedances
Instances where this facility's reported discharge monitoring results exceeded its permitted limits under the Clean Water Act. Exceedance percentage shows how far over the permit limit the discharge was.
| Pollutant | Violation | Reported | Limit | Exceedance | Period | Status |
|---|---|---|---|---|---|---|
| Chromium, hexavalent [as Cr] | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.01 | +150% | Dec 2025 | Resolved |
| Chromium, hexavalent [as Cr] | DMR, Limited - Numeric Violation | 0.04 mg/L | 0.02 | +150% | Sep 2025 | Open |
| Chromium, hexavalent [as Cr] | DMR, Limited - Numeric Violation | 0.04 mg/L | 0.01 | +614% | Sep 2025 | Resolved |
| Chromium, hexavalent [as Cr] | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.01 | +132% | Feb 2025 | Resolved |
| Chromium, hexavalent [as Cr] | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.01 | +150% | Jan 2025 | Resolved |
| % Survival Static Renewal 96Hr Acute Pimephales promelas | DMR, Limited - Numeric Violation | 65.00 % | 70.00 | +7% | Dec 2024 | Open |
| % Survival Static Renewal 96Hr Acute Pimephales promelas | DMR, Limited - Numeric Violation | 65.00 % | 70.00 | +7% | Dec 2024 | Open |
| Chromium, hexavalent [as Cr] | DMR, Limited - Numeric Violation | 0.04 mg/L | 0.01 | +614% | Dec 2024 | Resolved |
| Chromium, hexavalent [as Cr] | DMR, Limited - Numeric Violation | 0.04 mg/L | 0.02 | +150% | Dec 2024 | Open |
| Chromium, hexavalent [as Cr] | DMR, Limited - Numeric Violation | 0.04 mg/L | 0.01 | +614% | Dec 2024 | Resolved |
| Chromium, hexavalent [as Cr] | DMR, Limited - Numeric Violation | 0.04 mg/L | 0.02 | +150% | Dec 2024 | Open |
| Chromium, hexavalent [as Cr] | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.01 | +36% | Nov 2024 | Resolved |
| Solids, settleable | DMR, Limited - Numeric Violation | 0.00 mg/L | 0.00 | +200% | Jun 2024 | Open |
| Chromium, hexavalent [as Cr] | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.01 | +75% | Feb 2024 | Resolved |
| Chromium, hexavalent [as Cr] | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.01 | +75% | Jan 2024 | Resolved |
| Chromium, hexavalent [as Cr] | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.01 | +30% | Dec 2023 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.07 mg/L | 0.01 | +364% | Dec 2023 | Open |
| Chromium, hexavalent [as Cr] | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.01 | +30% | Dec 2023 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.07 mg/L | 0.03 | +91% | Dec 2023 | Open |
| Nickel, total recoverable | DMR, Limited - Numeric Violation | 0.13 mg/L | 0.09 | +40% | Dec 2023 | Open |
| Lead, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.01 | +98% | Dec 2023 | Open |
| Chromium, hexavalent [as Cr] | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.01 | +5% | Feb 2023 | Open |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.07 mg/L | 0.01 | +364% | Jan 2023 | Open |
| Nickel, total recoverable | DMR, Limited - Numeric Violation | 0.13 mg/L | 0.09 | +40% | Jan 2023 | Open |
| Lead, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.01 | +98% | Jan 2023 | Open |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.07 mg/L | 0.03 | +91% | Jan 2023 | Open |
| Chromium, hexavalent [as Cr] | DMR, Limited - Numeric Violation | 0.03 mg/L | 0.02 | +63% | Dec 2022 | Open |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.04 mg/L | 0.03 | +26% | Dec 2022 | Open |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.01 | +64% | Dec 2022 | Open |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.04 mg/L | 0.01 | +207% | Dec 2022 | Open |
| Chromium, hexavalent [as Cr] | DMR, Limited - Numeric Violation | 0.03 mg/L | 0.01 | +364% | Dec 2022 | Open |
| Chromium, hexavalent [as Cr] | DMR, Limited - Numeric Violation | 0.03 mg/L | 0.02 | +63% | Mar 2022 | Open |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.04 mg/L | 0.03 | +26% | Mar 2022 | Open |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.04 mg/L | 0.01 | +207% | Mar 2022 | Resolved |
| Chromium, hexavalent [as Cr] | DMR, Limited - Numeric Violation | 0.03 mg/L | 0.01 | +364% | Mar 2022 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.05 mg/L | 0.01 | +229% | Dec 2021 | Open |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.08 mg/L | 0.01 | +443% | Dec 2021 | Resolved |
| Lead, total recoverable | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.01 | +60% | Dec 2021 | Open |
| Nickel, total recoverable | DMR, Limited - Numeric Violation | 0.12 mg/L | 0.09 | +29% | Dec 2021 | Open |
| Chromium, hexavalent [as Cr] | DMR, Limited - Numeric Violation | 0.03 mg/L | 0.01 | +364% | Dec 2021 | Resolved |
| Lead, total recoverable | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.01 | +19% | Dec 2021 | Open |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.05 mg/L | 0.03 | +35% | Dec 2021 | Open |
| Chromium, hexavalent [as Cr] | DMR, Limited - Numeric Violation | 0.03 mg/L | 0.02 | +63% | Dec 2021 | Open |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.08 mg/L | 0.03 | +124% | Dec 2021 | Open |
| Chromium, hexavalent [as Cr] | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.01 | +114% | Dec 2021 | Open |
Enforcement Actions
Formal enforcement cases brought by the EPA or state agencies, including administrative orders and civil penalties assessed. Penalty amounts reflect what was formally assessed, not necessarily what was collected.
State CWA Non Penalty AO
Clean Water Act
· Case CA-CFEA444599 · Jul 1, 2021
State CWA Non Penalty AO
Clean Water Act
· Case CA-R221-0011 · Jul 1, 2021
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