| Violation ID |
Occurred Date |
Violation Type |
(-) Violation Description |
Corrective Action |
Status |
Classification |
Source |
| 1138484 |
11/22/2024 |
Surface Water |
On November 22, 2024, the Chino Creek temperature was 28.5 degrees Celsius above the receiving water limitation of 26 degrees Celsius. The discharged temperature reported value was 27.1 degrees Celsius at RP-5 effluent. |
Due to the lack of Chino Creek upstream and CCWRF effluent data, it is difficult to conclude that the RP-5 effluent was not the cause of the exceedances. However, the Chino area had been experiencing warm weather in the month of November and the field testing took place in the afternoon. The higher ambient temperatures and the low flow in the concrete-lined portion of the channel could have caused the higher temperatures at the downstream creek location, R-003D.
1) All field testing of the sites listed in the above table will be conducted on the same day and approximately at the same time. This will provide a better data set to determine if effluent temperature is the cause of an exceedance and to know the background temperature upstream of the discharge points.
2) A work order has been entered to add continuous monitoring for the RP-5 and CCWRF effluent temperatures. This will align with how Regional Plant No. 1 is currently monitoring effluent temperature.
3) The Operations staff will notify Compliance staff when temperature exceedances occur. In addition to conducting periodic training, an electronic solution will need to be implemented to flag an exceedance once it is entered into the data logger.
|
Violation |
U |
eSMR |
| 1138483 |
11/13/2024 |
Surface Water |
On November 13, 2024, the Chino Creek temperature was 28.4 degrees Celsius above the receiving water limitation of 26 degrees Celsius. The discharged temperature reported value was 27.8 degrees Celsius at RP-5 effluent. |
Due to the lack of Chino Creek upstream and CCWRF effluent data, it is difficult to conclude that the RP-5 effluent was not the cause of the exceedances. However, the Chino area had been experiencing warm weather in the month of November and the field testing took place in the afternoon. The higher ambient temperatures and the low flow in the concrete-lined portion of the channel could have caused the higher temperatures at the downstream creek location, R-003D.
1) All field testing of the sites listed in the above table will be conducted on the same day and approximately at the same time. This will provide a better data set to determine if effluent temperature is the cause of an exceedance and to know the background temperature upstream of the discharge points.
2) A work order has been entered to add continuous monitoring for the RP-5 and CCWRF effluent temperatures. This will align with how Regional Plant No. 1 is currently monitoring effluent temperature.
3) The Operations staff will notify Compliance staff when temperature exceedances occur. In addition to conducting periodic training, an electronic solution will need to be implemented to flag an exceedance once it is entered into the data logger.
|
Violation |
U |
eSMR |
| 1121049 |
07/07/2023 |
CAT2 |
Chlorine, Total Residual Instantaneous Maximum limit is 0.1 mg/L and reported value was 3.3 mg/L at M-001A. |
The following items are completed action items to help mitigate potential future incidents of this nature.
1) MCC No.1 main circuit breaker replaced.
2) Emergency onsite generator test completed after MCC No. 1 main circuit breaker replacement. Emergency onsite generator turned on seamlessly and provided the necessary power to the SBS pumps when the main utility power was disconnected. |
Violation |
U |
eSMR |
| 1115441 |
04/02/2023 |
LREP |
Annual SMR ( SUMRPT ) report for 2022 (2553933) was due on 01-APR-23 |
|
Violation |
B |
Report |
| 1115500 |
04/02/2023 |
LREP |
Annual SMR ( SUMRPT ) report for 2022 (2711194) was due on 01-APR-23 |
|
Violation |
B |
Report |
| 1115059 |
12/31/2022 |
DMON |
M-003
Annual Perchlorate - IEUA missed analysis |
Collect additional sample in addition to the annual sample in 2023. |
Violation |
U |
eSMR |
| 1115061 |
12/31/2022 |
DMON |
M-INF 3C (RP-2 Recycled Flow)
Annual TCDD (full list) - IEUA missed analysis |
Collect additional sample in addition to the annual sample in 2023. |
Violation |
U |
eSMR |
| 1109293 |
10/01/2022 |
LREP |
Annual SMR ( PRETRPT ) report for 2021 (2416108) was due on 30-SEP-22 |
|
Violation |
B |
Report |
| 1103432 |
08/31/2021 |
DMON |
Toxicity data was not reported for 003-A for August 2021. Discharger used NODI P (for lab error) in DMRs triggering a violation. No data reported in eSMR or uploaded in attachments to verify/validate. |
|
Violation |
B |
Report |
| 1088564 |
09/30/2020 |
DMON |
Failed to sample for bromodichloromethane and chlorodibromomethane quarterly at 002. Reported NODI E in DMR generating a violation in the federal database. |
|
Violation |
B |
Report |
|
Report displays most recent five years of violations. Refer to the Interactive Violation Report for more data.
|
