| Violation ID |
Occurred Date |
Violation Type |
(-) Violation Description |
Corrective Action |
Status |
Classification |
Source |
| 1139584 |
12/12/2024 |
CAT1 |
Boron, Total Monthly Average limit is 1.5 mg/L and reported value was 2.6 mg/L at EFF-002. |
Primary inlet valve was failing to open on the system. The system was adding in chlorine to the remaining treated water which caused that water to have a high chlorine concentration. Plant operations found a way to manually open the inlet valve so this issue should not arise again. The January 2024 - November 2024 results for boron at EFF-002 were all within permit limits. |
Violation |
U |
eSMR |
| 1139581 |
12/12/2024 |
CAT2 |
Chlorine, Total Residual Daily Maximum limit is 0.1 mg/L and reported value was 0.11 mg/L at EFF-002. |
Primary inlet valve was failing to open on the system. The system was adding in chlorine to the remaining treated water which caused that water to have a high chlorine concentration. Plant operations found a way to manually open the inlet valve so this issue should not arise again. The January 2024 - November 2024 results for chlorine, total residual at EFF-002 were all 0.00. |
Violation |
U |
eSMR |
| 1139582 |
11/14/2024 |
DMON |
Dioxins and Furans samples were missed because the lab did not send the bottles with the original bottle shipment. DWR requested dioxin bottles, but the lab was not able to provide bottles before November ended. The January 2024 - October 2024 dioxin results for all monitoring stations are non-detect. |
Dioxins and Furans samples were missed because the lab did not send the bottles with the original bottle shipment. DWR requested dioxin bottles, but the lab was not able to provide bottles before November ended. The January 2024 - October 2024 dioxin results for all monitoring stations are non-detect. |
Violation |
U |
eSMR |
| 1139583 |
11/14/2024 |
DMON |
Dioxins and Furans samples were missed because the lab did not send the bottles with the original bottle shipment. DWR requested dioxin bottles, but the lab was not able to provide bottles before November ended. The January 2024 - October 2024 dioxin results for all monitoring stations are non-detect. |
Dioxins and Furans samples were missed because the lab did not send the bottles with the original bottle shipment. DWR requested dioxin bottles, but the lab was not able to provide bottles before November ended. The January 2024 - October 2024 dioxin results for all monitoring stations are non-detect. |
Violation |
U |
eSMR |
| 1134977 |
09/12/2024 |
OEV |
Temperature Instantaneous Maximum limit is 80 Degrees F and reported value was 80.96 Degrees F at EFF-001 (A & B). |
This result is at the permit effluent limit (1% exceedance) and it would not have been an exceedance in the previous R4-2016-0224 order. Temperature measured in August complied with permit limits. Ambient air temperature was 76.5 F. The powerplant does not employ treatment, nor does it add any chemicals to the once-through cooling water. |
Violation |
U |
eSMR |
| 1134979 |
08/22/2024 |
OEV |
pH Instantaneous Maximum limit is 8.7 SU and reported value was 9.0 SU at EFF-001 (A & B). |
pH measured at INF-001 (8.7) coming into the plant was already above the order limit. pH was in compliance for July and September. The powerplant does not employ treatment, nor does it add any chemicals to the once-through cooling water. |
Violation |
U |
eSMR |
| 1134978 |
07/25/2024 |
OEV |
Temperature Daily Maximum limit is 80 Degrees F and reported value was 84.2 Degrees F at EFF-001 (A & B). |
Temperature measured at INF-001 (80.78 F) coming into the plant was already above the temperature order limit (further discussed in Climate Change Plan). This result would not have been an exceedance in the previous R4-2016-0224 order. Ambient air temperature was 92.0 F. Temperature measured in August complies with permit limits. The powerplant does not employ treatment, nor does it add any chemicals to the once-through cooling water. |
Violation |
U |
eSMR |
| 1130201 |
04/25/2024 |
CAT2 |
Copper, Total Monthly Average limit is 29 ug/L and reported value was 35 ug/L at EFF-002. |
The May 2024 and June 2024 copper results complied with the permit limit. |
Violation |
U |
eSMR |
| 1126973 |
03/31/2024 |
DMON |
The following parameters were not analyzed, despite discharge being reported, for the month of March 2024: BOD, Chloride, Copper, Boron, Mercury, Bis(2-ethylhexyl) Phthalate, and TCDD. |
|
Violation |
B |
Report |
| 1126974 |
03/31/2024 |
DMON |
The following parameters were not analyzed, despite discharge being reported, for the month of March 2024: BOD, Chloride, Total Residual Chlorine, Nitrate + Nitrite, Copper, Boron, Lead, Mercury, Zinc, Dibromochloromethane, Dichlorobromomethane, Tetrachloroethylene, Bis(2-ethylhexyl) Phthalate, Chloroform, Total Trihalomethanes, and TCDD. |
|
Violation |
B |
Report |
| 1121323 |
09/21/2023 |
OEV |
pH Daily Maximum limit is 8.8 SU and reported value was 8.9 SU at EFF-001 (A & B). |
The pH in July 2023, August 2023, and October 2023 all complied with the pH effluent limit. The powerplant does not employ treatment, nor does it add any chemicals to the once-through cooling water. |
Violation |
U |
eSMR |
| 1121322 |
08/24/2023 |
OEV |
Temperature Daily Maximum limit is 80 Degrees F and reported value was 81.86 Degrees F at EFF-001 (A & B). |
Historical data under the previous order show that temperature results increase in July and August of every year. Temperature is not an issue in September - June. The September 2023 result is 77.54°F and it follows the historical data. The powerplant does not employ treatment, nor does it add any chemicals to the once-through cooling water. |
Violation |
U |
eSMR |
| 1121321 |
07/20/2023 |
OEV |
Temperature Daily Maximum limit is 80 Degrees F and reported value was 81.5 Degrees F at EFF-001 (A & B). |
Historical data under the previous order show that temperature results increase in July and August of every year. Temperature is not an issue in September - June. The September 2023 result is 77.54°F and it follows the historical data. The powerplant does not employ treatment, nor does it add any chemicals to the once-through cooling water. |
Violation |
U |
eSMR |
| 1118971 |
06/30/2023 |
CAT2 |
Copper, Total Recoverable Monthly Average limit is 29 ug/L and reported value was 35 ug/L at EFF-002. |
The likely cause of the copper exceedances is from elevated chlorine in the potable water treatment plant. The potable water treatment plant used to operate automatically on demand, but the software is no longer supported and can't be updated to perform this function. Aside from chlorination, the Facility does not use treatment nor add any chemicals to the drainage sump water. The operators will review manual operations of the chlorine dosage. April 2023 copper result was in compliance with the monthly average effluent limit. |
Violation |
B |
eSMR |
| 1118972 |
05/31/2023 |
CAT2 |
Copper, Total Recoverable Monthly Average limit is 29 ug/L and reported value was 48 ug/L at EFF-002. |
The likely cause of the copper exceedances is from elevated chlorine in the potable water treatment plant. The potable water treatment plant used to operate automatically on demand, but the software is no longer supported and can't be updated to perform this function. Aside from chlorination, the Facility does not use treatment nor add any chemicals to the drainage sump water. The operators will review manual operations of the chlorine dosage. April 2023 copper result was in compliance with the monthly average effluent limit. |
Violation |
B |
eSMR |
| 1112929 |
11/17/2022 |
OEV |
pH Instantaneous Maximum limit is 8.5 SU and reported value was 8.8 SU at EFF-001 (A & B). |
EFF-001 (A&B) had a pH result of 8.8 which exceeds the 8.5 instantaneous maximum limit. The pH of influent water coming into the plant (INF-001) was similarly high, which measured at 8.5. The pH measured at EFF-001 (A&B) on 12/15/22 complied with permit limits. |
Violation |
U |
eSMR |
| 1109472 |
08/25/2022 |
OEV |
pH Instantaneous Maximum limit is 8.5 SU and reported value was 9.4 SU at EFF-001 (A & B). |
In August, EFF-001 (A&B) had a pH result of 9.4 which exceeds the 8.5 instantaneous maximum limit. The exceedance was caused by the pH of influent water coming into the plant (INF-001), which was measured at 9.4. In the new R4-2022-0237 order, this pH result would not be an exceedance because pH intake water credits would apply. |
Violation |
U |
eSMR |
| 1109475 |
08/25/2022 |
OEV |
pH Instantaneous Maximum limit is 8.5 SU and reported value was 9.4 SU at EFF-002. |
In August, EFF-002 had a pH result of 9.4 which exceeds the 8.5 instantaneous maximum limit. The exceedance was caused by the pH of influent water coming into the plant (INF-001), which was measured at 9.4. In the new R4-2022-0237 order, this pH result would not be an exceedance because pH intake water credits would apply. |
Violation |
U |
eSMR |
| 1127271 |
07/31/2022 |
CAT2 |
Copper, Total Recoverable Monthly Average (Mean) limit is 24 ug/L and reported value was 80 ug/L at EFF-002. |
|
Violation |
B |
Report |
| 1109474 |
07/28/2022 |
OEV |
pH Instantaneous Maximum limit is 8.5 SU and reported value was 9.2 SU at EFF-001 (A & B). |
In July, EFF-001 (A&B) had a pH result of 9.2 which exceeds the 8.5 instantaneous maximum limit. The exceedance was caused by the pH of influent water coming into the plant (INF-001), which was measured at 9.3. In the new R4-2022-0237 order, this pH result would not be an exceedance because pH intake water credits would apply. |
Violation |
U |
eSMR |
| 1109473 |
07/28/2022 |
CAT2 |
Copper, Total Recoverable Daily Maximum limit is 79 ug/L and reported value was 80 ug/L at EFF-002. |
The potable water treatment plant used to operate automatically on demand, but the software is no longer performing this function. The operation will be controlled manually by plant operators. Other maintenance activities such as filter changes and clean outs will also be performed to correct the copper exceedance. The copper samples collected in August and September complied with the permit limit. In addition, the chronic toxicity test conducted in August at EFF-002 was in compliance. From January 2022 - June 2022, copper samples complied with the permit limit. |
Violation |
U |
eSMR |
| 1106480 |
06/23/2022 |
OEV |
pH Instantaneous Maximum limit is 8.5 SU and reported value was 8.7 SU at EFF-001 (A & B). |
pH measured at EFF-001(A&B) in April was in compliance. In May, EFF-001 (A&B) had a pH result of 8.6 which exceeds the 8.5 instantaneous maximum limit. The exceedance was also caused by the pH of influent water coming into the plant (INF-001), which was measured at 8.5. |
Violation |
U |
eSMR |
| 1106481 |
05/19/2022 |
OEV |
pH Instantaneous Maximum limit is 8.5 SU and reported value was 8.6 SU at EFF-001 (A & B). |
In June, EFF-001 (A&B) had a pH result of 8.7 which exceeds the 8.5 instantaneous maximum limit. The exceedance was also caused by the pH of influent water coming into the plant (INF-001), which was measured at 8.8. pH measured at EFF-001(A&B) in April was in compliance. |
Violation |
U |
eSMR |
| 1099914 |
11/30/2021 |
CAT2 |
Copper, Total Recoverable Monthly Average limit is 24 ug/L and reported value was 38 ug/L at EFF-002. |
The potable water treatment plant usually operates automatically on demand, but the software is no longer performing this function. Other maintenance activities such as filter changes and clean outs will also be performed to correct the copper exceedance. Copper results collected in October and December comply with permit limit. |
Violation |
B |
eSMR |
| 1103169 |
11/02/2021 |
LREP |
Report was submitted 1 day late. |
|
Violation |
B |
Report |
| 1096143 |
09/27/2021 |
CTOX |
Chronic Toxicity-C.dubia-Reproduction Monthly Median limit is 0.0 Pass/Fail (Pass = 0, Fail = 1) and reported value was 1.0 Pass/Fail (Pass = 0, Fail = 1) at EFF-001 (A & B). |
Toxicity Reduction Evaluation (TRE) work plan is implemented. Additional sampling is implemented monthly. |
Violation |
B |
eSMR |
| 1103167 |
08/30/2021 |
CTOX |
Chronic Toxicity-C.dubia-Reproduction Maximum Daily (MDEL) limit is 0.0 Pass/Fail (Pass = 0, Fail = 1) and reported value was 0.0 Pass/Fail (Pass = 0, Fail = 1) at EFF-001 (A & B). |
|
Violation |
B |
Report |
| 1096140 |
08/30/2021 |
CTOX |
Chronic Toxicity-C.dubia-Reproduction Monthly Median limit is 0.0 Pass/Fail (Pass = 0, Fail = 1) and reported value was 1.0 Pass/Fail (Pass = 0, Fail = 1) at EFF-001 (A & B). |
Toxicity Reduction Evaluation (TRE) work plan was implemented. TRE is attached to this quarterly report. Additional sampling began after the first known failed toxicity test (first sample taken on Aug. 09, 2021). |
Violation |
B |
eSMR |
| 1096142 |
08/12/2021 |
OEV |
pH Instantaneous Maximum limit is 8.5 SU and reported value was 8.7 SU at EFF-001 (A & B). |
pH measured at EFF-001(A&B) in September complied with permit limit |
Violation |
U |
eSMR |
| 1096144 |
07/22/2021 |
OEV |
pH Instantaneous Maximum limit is 8.5 SU and reported value was 8.6 SU at EFF-002. |
pH measured at EFF-002 in August and September complied with permit limits |
Violation |
U |
eSMR |
| 1096141 |
07/22/2021 |
OEV |
pH Instantaneous Maximum limit is 8.5 SU and reported value was 8.7 SU at EFF-001 (A & B). |
pH measured at EFF-001 (A&B) in September sample was in compliance |
Violation |
U |
eSMR |
| 1103130 |
06/30/2021 |
DMON |
The facility experienced a power outage due to State Water Project Operations Control management which provides daily water and power operation schedules. Therefore, certain parameters were not sampled for June 2021. |
|
Violation |
B |
Report |
| 1103131 |
06/30/2021 |
DMON |
The facility experienced a power outage due to State Water Project Operations Control management which provides daily water and power operation schedules. Therefore, certain parameters were not sampled for June 2021. |
|
Violation |
B |
Report |
| 1103128 |
06/30/2021 |
DMON |
The facility experienced a power outage due to State Water Project Operations Control management which provides daily water and power operation schedules. Therefore, monthly parameters were not sampled for June 2021. |
|
Violation |
B |
Report |
| 1103129 |
06/30/2021 |
DMON |
The facility experienced a power outage due to State Water Project Operations Control management which provides daily water and power operation schedules. Therefore, monthly parameters were not sampled for June 2021. |
|
Violation |
B |
Report |
| 1092283 |
05/26/2021 |
OEV |
pH Instantaneous Maximum limit is 8.5 SU and reported value was 8.7 SU at EFF-001 (A & B). |
This exceedance was caused by the pH of influent water coming into the plant (INF-001), which was also measured at 8.7 pH at this time. |
Violation |
U |
eSMR |
| 1088717 |
02/18/2021 |
OEV |
pH Instantaneous Maximum limit is 8.5 SU and reported value was 8.7 SU at EFF-001 (A & B). |
This exceedance was caused by the pH of the influent water coming into the plant (INF-001), which was measured also at 8.7 pH at this time. The March pH result for EFF-001 (A & B) was 8.3 |
Violation |
U |
eSMR |
| 1084510 |
12/17/2020 |
OEV |
pH Instantaneous Maximum limit is 8.5 SU and reported value was 8.6 SU at EFF-001 (A & B). |
This exceedance was caused by the pH of the influent water coming into the plant (INF-001), which was measured also at 8.6 pH at this time. |
Violation |
U |
eSMR |
| 1084509 |
12/17/2020 |
OEV |
pH Instantaneous Maximum limit is 8.5 SU and reported value was 8.6 SU at EFF-002. |
This exceedance was caused by the pH of the influent water coming into the plant (INF-001), which was measured also at 8.6 pH at this time. |
Violation |
U |
eSMR |
| 1084511 |
11/23/2020 |
OEV |
pH Instantaneous Maximum limit is 8.5 SU and reported value was 8.6 SU at EFF-001 (A & B). |
This exceedance was caused by the pH of the influent water coming into the plant (INF-001), which was measured also at 8.6 pH at this time. |
Violation |
U |
eSMR |
| 1084505 |
10/07/2020 |
DMON |
Unit one was down for maintenance during the entire month of October. Samples were not collected in October due to maintenance work conducted at power plant. Discharge numbers have been reduced since the start of maintenance work. |
Unit one was down for maintenance during the entire month of October. Samples were not collected in October due to maintenance work conducted at power plant. Quarterly samples were collected in November and monthly samples were collected in December. Future maintenance work will be better coordinated to allow for water quality sampling. |
Violation |
U |
eSMR |
| 1084506 |
10/07/2020 |
DMON |
Unit one was down for maintenance during the entire month of October. Samples were not collected in October due to maintenance work conducted at power plant. Discharge numbers have been reduced since the start of maintenance work. |
Unit one was down for maintenance during the entire month of October. Samples were not collected in October due to maintenance work conducted at power plant. Quarterly samples were collected in November and monthly samples were collected in December. Future maintenance work will be better coordinated to allow for water quality sampling. |
Violation |
U |
eSMR |
| 1084507 |
10/07/2020 |
DMON |
Unit one was down for maintenance during the entire month of October. Samples were not collected in October due to maintenance work conducted at power plant. Discharge numbers have been reduced since the start of maintenance work. |
Unit one was down for maintenance during the entire month of October. Samples were not collected in October due to maintenance work conducted at power plant. Quarterly samples were collected in November and monthly samples were collected in December. Future maintenance work will be better coordinated to allow for water quality sampling. |
Violation |
U |
eSMR |
| 1084508 |
10/07/2020 |
DMON |
Unit one was down for maintenance during the entire month of October. Samples were not collected in October due to maintenance work conducted at power plant. Discharge numbers have been reduced since the start of maintenance work. |
Unit one was down for maintenance during the entire month of October. Samples were not collected in October due to maintenance work conducted at power plant. Quarterly samples were collected in November and monthly samples were collected in December. Future maintenance work will be better coordinated to allow for water quality sampling. |
Violation |
U |
eSMR |
| 1080555 |
09/17/2020 |
CAT2 |
Copper, Total Monthly Average (Mean) limit is 24 ug/L and reported value was 38 ug/L at EFF-002. |
The software for the potable water treatment plant will be updated to correct the elevated chlorine levels. Other maintenance activities such as filter changes and clean outs will also be performed to correct the copper exceedance. |
Violation |
B |
eSMR |
| 1080556 |
08/20/2020 |
OEV |
pH Instantaneous Maximum limit is 8.5 SU and reported value was 8.7 SU at EFF-001 (A & B). |
The pH for INF-001 on 8/20/20 was 8.7. The pH in the intake water prior to entry into the Facility already exceeded the instantaneous maximum. The power plant can't correct for high pH in intake water. |
Violation |
U |
eSMR |
| 1080557 |
07/30/2020 |
OEV |
pH Instantaneous Maximum limit is 8.5 SU and reported value was 9.5 SU at EFF-001 (A & B). |
The pH for INF-001 on 7/30/20 was 9.4. The pH in the intake water prior to entry into the Facility already exceeded the instantaneous maximum. The power plant can't correct for high pH in intake water. |
Violation |
U |
eSMR |
| 1080554 |
07/30/2020 |
OEV |
pH Instantaneous Maximum limit is 8.5 SU and reported value was 9.5 SU at EFF-002. |
The pH for INF-001 on 7/30/20 was 9.4. The pH in the intake water prior to entry into the Facility already exceeded the instantaneous maximum. The power plant can't correct for high pH in intake water. |
Violation |
U |
eSMR |
| 1077661 |
06/03/2020 |
OEV |
pH Instantaneous Maximum limit is 8.5 SU and reported value was 8.8 SU at EFF-001 (A & B). |
No corrective action taken for pH at this time, the next sample was below the limit. |
Violation |
U |
eSMR |
| 1077662 |
06/03/2020 |
OEV |
pH Instantaneous Maximum limit is 8.5 SU and reported value was 8.8 SU at EFF-002. |
No corrective action taken for pH at this time, the next sample was below the limit. |
Violation |
U |
eSMR |
| 1077663 |
05/27/2020 |
OEV |
pH Instantaneous Maximum limit is 8.5 SU and reported value was 8.6 SU at EFF-001 (A & B). |
No specific action taken to address pH effluent at the time of this reading. |
Violation |
B |
eSMR |
| 1073513 |
03/31/2020 |
CAT2 |
Copper, Total Recoverable Monthly Average (Mean) limit is 24 ug/L and reported value was 56 ug/L at EFF-002. |
The sump has been drained and it is believed the copper has been removed. |
Violation |
B |
eSMR |
| 1073512 |
02/27/2020 |
OEV |
pH Instantaneous Maximum limit is 8.5 SU and reported value was 8.6 SU at EFF-001 (A & B). |
pH results for EFF-001 (A & B) and INF-001 are 8.6. The facility discharged the same pH that it received in its intake water. The March 26 pH result was within permit limits. |
Violation |
U |
eSMR |
|
Report displays most recent five years of violations. Refer to the Interactive Violation Report for more data.
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