Violation ID |
Occurred Date |
Violation Type |
(-) Violation Description |
Corrective Action |
Status |
Classification |
Source |
1125370 |
02/01/2024 |
CAT2 |
Chromium (VI) Monthly Average limit is 5.6 ug/L and reported value was 9.8 ug/L at EFF-004. |
Stevens Creek Quarry (SCQ) will conduct internal monitoring of the Active Treatment System (ATS) to evaluate the source of the exceedance and the performance of the ATS. Based on the ATS evaluation, SCQ will implement needed repairs as they arise and continue to conduct routine sediment removal of the settling tanks to optimize performance. SCQ will retrain sampling staff on proper sampling techniques. |
Violation |
U |
eSMR |
1125371 |
02/01/2024 |
Surface Water |
Exceedance of R2-2021-0010, Section V. Turbidity, Instantaneous Maximum limit is 55 NTU and reported value was 57.18 NTU. |
Stevens Creek Quarry (SCQ) will conduct internal monitoring of the Site to evaluate the source of the exceedance. Based on the Site evaluation, SCQ will implement needed repairs as they arise and continue to conduct routine sediment removal of the settling tanks to optimize BMP performance. |
Violation |
U |
eSMR |
1124649 |
01/22/2024 |
CAT2 |
Chromium (VI) Monthly Average limit is 5.6 ug/L and reported value was 9.8 ug/L at EFF-004. |
Stevens Creek Quarry (SCQ) will conduct internal monitoring of the Active Treatment System (ATS) to evaluate the source of the exceedance and the performance of the ATS. Based on the ATS evaluation, SCQ will implement needed repairs as they arise and continue to conduct routine sediment removal of the settling tanks to optimize performance. SCQ will retrain sampling staff on proper sampling techniques. |
Violation |
U |
eSMR |
1124651 |
01/22/2024 |
Surface Water |
Exceedance of R2-2021-0010, Section V. Turbidity, Instantaneous Maximum limit is 55 NTU and reported value was 143.37 NTU. |
Stevens Creek Quarry (SCQ) will conduct internal monitoring of the Site to evaluate the source of the exceedance. Based on the Site evaluation, SCQ will implement needed repairs as they arise and continue to conduct routine sediment removal of the settling tanks to optimize BMP performance. |
Violation |
U |
eSMR |
1124650 |
01/22/2024 |
Surface Water |
Exceedance of R2-2021-0010, Section V. Turbidity, Instantaneous Maximum limit is 90.9 NTU (10% increase from 82.65 NTU background level) and reported value was 205.12 NTU. |
Stevens Creek Quarry (SCQ) will conduct internal monitoring of the Site to evaluate the source of the exceedance. Based on the Site evaluation, SCQ will implement needed repairs as they arise and continue to conduct routine sediment removal of the settling tanks to optimize BMP performance. |
Violation |
U |
eSMR |
1123377 |
12/31/2023 |
CAT2 |
Chromium (VI) Monthly Average limit is 5.6 ug/L and reported value was 7.3 ug/L at EFF-004. |
Stevens Creek Quarry (SCQ) will conduct internal monitoring of the Active Treatment System (ATS) to evaluate the source of the exceedance and the performance of the ATS. Based on the ATS evaluation, SCQ will implement needed repairs as they arise and continue to conduct routine sediment removal of the settling tanks to optimize performance. SCQ will retrain sampling staff on proper sampling techniques. |
Violation |
B |
eSMR |
1123376 |
12/18/2023 |
DMON |
Exceedance of R2-2021-0010, Section V. SCQ did not sample for Dissolved Oxygen in milligrams per liter (mg/L). |
SCQ will retrain sampling staff on proper sampling techniques. |
Violation |
B |
eSMR |
1123379 |
12/18/2023 |
DMON |
Exceedance of R2-2021-0010, Section V. SCQ did not sample for Dissolved Oxygen in milligrams per liter (mg/L). |
SCQ will retrain sampling staff on proper sampling techniques. |
Violation |
B |
eSMR |
1123380 |
12/18/2023 |
DMON |
Exceedance of R2-2021-0010, Section V. SCQ did not sample for Dissolved Oxygen in milligrams per liter (mg/L). |
SCQ will retrain sampling staff on proper sampling techniques. |
Violation |
B |
eSMR |
1123381 |
12/18/2023 |
DMON |
Exceedance of R2-2021-0010, Section V. SCQ did not sample for Dissolved Oxygen in milligrams per liter (mg/L). |
SCQ will retrain sampling staff on proper sampling techniques. |
Violation |
B |
eSMR |
1123568 |
12/18/2023 |
DMON |
Exceedance of R2-2021-0010, Section V. SCQ did not sample for Dissolved Oxygen in milligrams per liter (mg/L). |
SCQ will retrain sampling staff on proper sampling techniques. |
Violation |
U |
eSMR |
1123569 |
12/18/2023 |
DMON |
Exceedance of R2-2021-0010, Section V. SCQ did not sample for Dissolved Oxygen in milligrams per liter (mg/L). |
SCQ will retrain sampling staff on proper sampling techniques. |
Violation |
U |
eSMR |
1123571 |
12/18/2023 |
DMON |
Exceedance of R2-2021-0010, Section V. SCQ did not sample for Dissolved Oxygen in milligrams per liter (mg/L). |
SCQ will retrain sampling staff on proper sampling techniques. |
Violation |
U |
eSMR |
1123574 |
12/18/2023 |
DMON |
Exceedance of R2-2021-0010, Section V. SCQ did not sample for Dissolved Oxygen in milligrams per liter (mg/L). |
SCQ will retrain sampling staff on proper sampling techniques. |
Violation |
U |
eSMR |
1123577 |
12/18/2023 |
CAT2 |
Chromium (VI) Monthly Average limit is 5.6 ug/L and reported value was 7.3 ug/L at EFF-004. |
Stevens Creek Quarry (SCQ) will conduct internal monitoring of the Active Treatment System (ATS) to evaluate the source of the exceedance and the performance of the ATS. Based on the ATS evaluation, SCQ will implement needed repairs as they arise and continue to conduct routine sediment removal of the settling tanks to optimize performance. |
Violation |
U |
eSMR |
1123378 |
12/18/2023 |
Surface Water |
Exceedance of R2-2021-0010, Section V. Turbidity, Instantaneous Maximum limit is 50 NTU and reported value was 127.47 NTU. |
Stevens Creek Quarry (SCQ) will conduct internal monitoring of the Site to evaluate the source of the exceedance. Based on the Site evaluation, SCQ will implement needed repairs as they arise and continue to conduct routine sediment removal of the settling tanks to optimize BMP performance. |
Violation |
B |
eSMR |
1123570 |
12/18/2023 |
Surface Water |
Exceedance of R2-2021-0010, Section V. Turbidity, Instantaneous Maximum limit is 50 NTU and reported value was 127.47 NTU. |
Stevens Creek Quarry (SCQ) will conduct internal monitoring of the Site to evaluate the source of the exceedance. Based on the Site evaluation, SCQ will implement needed repairs as they arise and continue to conduct routine sediment removal of the settling tanks to optimize BMP performance. |
Violation |
U |
eSMR |
1115052 |
02/28/2023 |
CAT2 |
Chromium (VI) Monthly Average limit is 5.6 ug/L and reported value was 5.9 ug/L at EFF-004. |
Stevens Creek Quarry (SCQ) will conduct internal monitoring of the Active Treatment System (ATS) to evaluate the source of the exceedance and the performance of the ATS. Based on the ATS evaluation, SCQ will implement needed repairs as they arise and continue to conduct routine sediment removal of the settling tanks to optimize performance. |
Violation |
B |
eSMR |
1123576 |
02/28/2023 |
CAT2 |
Chromium (VI) Monthly Average limit is 5.6 ug/L and reported value was 5.9 ug/L at EFF-004. |
Stevens Creek Quarry (SCQ) will conduct internal monitoring of the Active Treatment System (ATS) to evaluate the source of the exceedance and the performance of the ATS. Based on the ATS evaluation, SCQ will implement needed repairs as they arise and continue to conduct routine sediment removal of the settling tanks to optimize performance. |
Violation |
U |
eSMR |
1114157 |
01/31/2023 |
CAT2 |
Copper, Total Monthly Average limit is 14 ug/L and reported value was 65 ug/L at EFF-004. |
Stevens Creek Quarry (SCQ) will conduct internal monitoring of the Active Treatment System (ATS) to evaluate the source of the exceedance and the performance of the ATS. Based on the ATS evaluation, SCQ will implement needed repairs as they arise and continue to conduct routine sediment removal of the settling tanks to optimize performance. |
Violation |
B |
eSMR |
1114159 |
01/31/2023 |
CAT2 |
Lead, Total Monthly Average limit is 8.1 ug/L and reported value was 16 ug/L at EFF-004. |
Stevens Creek Quarry (SCQ) will conduct internal monitoring of the Active Treatment System (ATS) to evaluate the source of the exceedance and the performance of the ATS. Based on the ATS evaluation, SCQ will implement needed repairs as they arise and continue to conduct routine sediment removal of the settling tanks to optimize performance. |
Violation |
B |
eSMR |
1114156 |
01/31/2023 |
CAT2 |
Nickel, Total Monthly Average limit is 93 ug/L and reported value was 130 ug/L at EFF-004. |
Stevens Creek Quarry (SCQ) will conduct internal monitoring of the Active Treatment System (ATS) to evaluate the source of the exceedance and the performance of the ATS. Based on the ATS evaluation, SCQ will implement needed repairs as they arise and continue to conduct routine sediment removal of the settling tanks to optimize performance. |
Violation |
B |
eSMR |
1114160 |
01/09/2023 |
OEV |
pH Daily Maximum limit is 8.9 SU and reported value was 8.93 SU at EFF-006. |
Stevens Creek Quarry (SCQ) will assess the pH meter's accuracy by making sure the field meter is properly calibrated and rinsed with distilled water. SCQ will determine if the pH is faulty and assess if a new meter is needed for the project. |
Violation |
B |
eSMR |
1123566 |
01/09/2023 |
OEV |
pH Instantaneous Maximum limit is 8.5 SU and reported value was 8.93 SU at EFF-006. |
Stevens Creek Quarry (SCQ) will assess the pH meters accuracy by making sure the field meter is properly calibrated and rinsed with distilled water. SCQ will determine if the pH is faulty and assess if a new meter is needed for the project. |
Violation |
U |
eSMR |
1114158 |
01/05/2023 |
OEV |
pH Instantaneous Maximum limit is 8.5 SU and reported value was 8.75 SU at EFF-004. |
Stevens Creek Quarry (SCQ) will conduct internal monitoring of the Active Treatment System (ATS) to evaluate the source of the exceedance and the performance of the ATS. Based on the ATS evaluation, SCQ will implement needed repairs as they arise and continue to conduct routine sediment removal of the settling tanks to optimize performance. |
Violation |
B |
eSMR |
1123567 |
01/05/2023 |
OEV |
pH Instantaneous Maximum limit is 8.5 SU and reported value was 8.75 SU at EFF-004. |
Stevens Creek Quarry (SCQ) will conduct internal monitoring of the Active Treatment System (ATS) to evaluate the source of the exceedance and the performance of the ATS. Based on the ATS evaluation, SCQ will implement needed repairs as they arise and continue to conduct routine sediment removal of the settling tanks to optimize performance. |
Violation |
U |
eSMR |
1114161 |
01/05/2023 |
CAT2 |
Copper, Total Daily Maximum limit is 34 ug/L and reported value was 65 ug/L at EFF-004. |
Stevens Creek Quarry (SCQ) will conduct internal monitoring of the Active Treatment System (ATS) to evaluate the source of the exceedance and the performance of the ATS. Based on the ATS evaluation, SCQ will implement needed repairs as they arise and continue to conduct routine sediment removal of the settling tanks to optimize performance. |
Violation |
B |
eSMR |
1123564 |
01/05/2023 |
CAT2 |
Copper, Total Maximum Daily (MDEL) limit is 35 ug/L and reported value was 65 ug/L at EFF-004. |
Stevens Creek Quarry (SCQ) will conduct internal monitoring of the Active Treatment System (ATS) to evaluate the source of the exceedance and the performance of the ATS. Based on the ATS evaluation, SCQ will implement needed repairs as they arise and continue to conduct routine sediment removal of the settling tanks to optimize performance. |
Violation |
U |
eSMR |
1123563 |
01/05/2023 |
CAT2 |
Copper, Total Monthly Average limit is 14 ug/L and reported value was 65 ug/L at EFF-004. |
Stevens Creek Quarry (SCQ) will conduct internal monitoring of the Active Treatment System (ATS) to evaluate the source of the exceedance and the performance of the ATS. Based on the ATS evaluation, SCQ will implement needed repairs as they arise and continue to conduct routine sediment removal of the settling tanks to optimize performance. |
Violation |
U |
eSMR |
1123575 |
01/05/2023 |
CAT2 |
Lead, Total Monthly Average limit is 8.1 ug/L and reported value was 16 ug/L at EFF-004. |
Stevens Creek Quarry (SCQ) will conduct internal monitoring of the Active Treatment System (ATS) to evaluate the source of the exceedance and the performance of the ATS. Based on the ATS evaluation, SCQ will implement needed repairs as they arise and continue to conduct routine sediment removal of the settling tanks to optimize performance. |
Violation |
U |
eSMR |
1123565 |
01/05/2023 |
CAT2 |
Nickel, Total Maximum Daily (MDEL) limit is 93 ug/L and reported value was 130 ug/L at EFF-004. |
Stevens Creek Quarry (SCQ) will conduct internal monitoring of the Active Treatment System (ATS) to evaluate the source of the exceedance and the performance of the ATS. Based on the ATS evaluation, SCQ will implement needed repairs as they arise and continue to conduct routine sediment removal of the settling tanks to optimize performance. |
Violation |
U |
eSMR |
1123572 |
01/05/2023 |
Surface Water |
Exceedance of R2-2021-0010, Section V. Turbidity, Instantaneous Maximum limit is 50 NTU and reported value was 797 NTU. |
Stevens Creek Quarry (SCQ) will conduct internal monitoring of the Site to evaluate the source of the exceedance. Based on the Site evaluation, SCQ will implement needed repairs as they arise and continue to conduct routine sediment removal of the settling tanks to optimize BMP performance. |
Violation |
U |
eSMR |
1123573 |
01/05/2023 |
Surface Water |
Exceedance of R2-2021-0010, Section V. pH, Instantaneous Maximum limit is <6.5; or >8.5 SU and reported value was 8.68 SU. |
Stevens Creek Quarry (SCQ) will conduct internal monitoring of the Site to evaluate the source of the exceedance. Based on the Site evaluation, SCQ will implement needed repairs as they arise and continue to conduct routine sediment removal of the settling tanks to optimize BMP performance. |
Violation |
U |
eSMR |
1103739 |
03/31/2022 |
CAT2 |
Chromium (VI) Monthly Average limit is 5.6 ug/L and reported value was 26 ug/L at EFF-003. |
The Quarry drew down the water level in Sediment Trap 2 that discharges at 003 and refreshed the erosion control BMPs prior to the next storm event. |
Violation |
B |
eSMR |
1103736 |
03/31/2022 |
CAT2 |
Copper, Total Monthly Average limit is 14 ug/L and reported value was 23 ug/L at EFF-002. |
The Quarry drew down the water level in Sediment Trap 1 that discharges at 002 and refreshed the erosion control BMPs prior to the next storm event. |
Violation |
B |
eSMR |
1103737 |
03/31/2022 |
CAT2 |
Copper, Total Monthly Average limit is 14 ug/L and reported value was 43 ug/L at EFF-003. |
The Quarry drew down the water level in Sediment Trap 2 that discharges at 003 and refreshed the erosion control BMPs prior to the next storm event. |
Violation |
B |
eSMR |
1103738 |
03/28/2022 |
CAT2 |
Chromium (VI) Daily Maximum limit is 16 ug/L and reported value was 26 ug/L at EFF-003. |
The Quarry drew down the water level in Sediment Trap 2 that discharges at 003 and refreshed the erosion control BMPs prior to the next storm event. |
Violation |
B |
eSMR |
1103740 |
03/28/2022 |
CAT2 |
Copper, Total Daily Maximum limit is 34 ug/L and reported value was 43 ug/L at EFF-003. |
The Quarry drew down the water level in Sediment Trap 2 that discharges at 003 and refreshed the erosion control BMPs prior to the next storm event. |
Violation |
B |
eSMR |
1099661 |
12/13/2021 |
CAT2 |
Chromium (VI) Daily Maximum limit is 16 ug/L and reported value was 26 ug/L at EFF-003. |
The Quarry will draw down the water level in Sediment Trap 2 that discharges at 003 and refresh the erosion control BMPs prior to the next storm event. |
Violation |
U |
eSMR |
1099663 |
12/13/2021 |
CAT2 |
Chromium (VI) Monthly Average limit is 5.6 ug/L and reported value was 12 ug/L at EFF-004. |
An advanced treatment system (ATS) was installed and has been in operation as of January 1, 2022. Runoff will be routed through the ATS prior to discharge at 004. |
Violation |
B |
eSMR |
1099656 |
12/13/2021 |
CAT2 |
Chromium (VI) Monthly Average limit is 5.6 ug/L and reported value was 26 ug/L at EFF-003. |
The Quarry will draw down the water level in Sediment Trap 2 that discharges at 003 and refresh the erosion control BMPs prior to the next storm event. |
Violation |
B |
eSMR |
1099660 |
12/13/2021 |
CAT2 |
Copper, Total Daily Maximum limit is 34 ug/L and reported value was 46 ug/L at EFF-004. |
An advanced treatment system (ATS) was installed and has been in operation as of January 1, 2022. Runoff will be routed through the ATS prior to discharge at 004. |
Violation |
B |
eSMR |
1099658 |
12/13/2021 |
CAT2 |
Copper, Total Daily Maximum limit is 34 ug/L and reported value was 76 ug/L at EFF-003. |
The Quarry will draw down the water level in Sediment Trap 2 that discharges at 003 and refresh the erosion control BMPs prior to the next storm event. |
Violation |
B |
eSMR |
1099659 |
12/13/2021 |
CAT2 |
Copper, Total Monthly Average limit is 14 ug/L and reported value was 46 ug/L at EFF-004. |
An advanced treatment system (ATS) was installed and has been in operation as of January 1, 2022. Runoff will be routed through the ATS prior to discharge at 004. |
Violation |
B |
eSMR |
1099657 |
12/13/2021 |
CAT2 |
Copper, Total Monthly Average limit is 14 ug/L and reported value was 76 ug/L at EFF-003. |
The Quarry will draw down the water level in Sediment Trap 2 that discharges at 003 and refresh the erosion control BMPs prior to the next storm event. |
Violation |
B |
eSMR |
1099662 |
12/13/2021 |
CAT2 |
Lead, Total Monthly Average limit is 8.1 ug/L and reported value was 13 ug/L at EFF-003. |
The Quarry will draw down the water level in Sediment Trap 2 that discharges at 003 and refresh the erosion control BMPs prior to the next storm event. |
Violation |
B |
eSMR |
1099664 |
12/13/2021 |
CAT2 |
Lead, Total Monthly Average limit is 8.1 ug/L and reported value was 9.6 ug/L at EFF-004. |
An advanced treatment system (ATS) was installed and has been in operation as of January 1, 2022. Runoff will be routed through the ATS prior to discharge at 004. |
Violation |
B |
eSMR |
1099665 |
12/13/2021 |
CAT2 |
Nickel, Total Monthly Average limit is 93 ug/L and reported value was 120 ug/L at EFF-003. |
The Quarry will draw down the water level in Sediment Trap 2 that discharges at 003 and refresh the erosion control BMPs prior to the next storm event. |
Violation |
B |
eSMR |
1099649 |
10/25/2021 |
CAT2 |
Copper, Total Monthly Average limit is 14 ug/L and reported value was 25 ug/L at EFF-002. |
The Quarry drew down the water level in Sediment Trap 1 that discharges at 002 and refreshed the erosion control BMPs prior to the next storm event. |
Violation |
B |
eSMR |
Report displays most recent five years of violations. Refer to the Interactive Violation Report for more data.
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