| Violation ID |
Occurred Date |
Violation Type |
(-) Violation Description |
Corrective Action |
Status |
Classification |
Source |
| 1139672 |
12/31/2024 |
CAT2 |
Copper, Total 1-Hour Average (Mean) limit is 6.5 ug/L and reported value was 6.7 ug/L at EFF-004. |
A source study is ongoing. Source study work going on includes additional sampling locations and correlations between unit operations and copper concentrations. The source study will help determine treatment options. |
Violation |
U |
eSMR |
| 1139673 |
11/30/2024 |
CAT2 |
Copper, Total Monthly Average limit is 6.5 ug/L and reported value was 9 ug/L at EFF-004. |
A source study is ongoing. Source study work going on includes additional sampling locations and correlations between unit operations and copper concentrations. The source study will help determine treatment options. |
Violation |
U |
eSMR |
| 1139674 |
10/31/2024 |
CAT2 |
Copper, Total Monthly Average limit is 6.5 ug/L and reported value was 10 ug/L at EFF-004. |
A source study is ongoing. Source study work going on includes additional sampling locations and correlations between unit operations and copper concentrations. The source study will help determine treatment options. |
Violation |
U |
eSMR |
| 1135166 |
09/30/2024 |
CAT2 |
Copper, Total Recoverable 1-Hour Average (Mean) limit is 6.5 ug/L and reported value was 8.6 ug/L at EFF-004. |
There is an on-going source study for the source of the copper. Copper piping was replaced within the main power house and the results of samplings since the change of material are still pending. |
Violation |
U |
eSMR |
| 1135168 |
08/31/2024 |
CAT2 |
Copper, Total Recoverable Monthly Average limit is 6.5 ug/L and reported value was 9.1 ug/L at EFF-004. |
There is an on-going source study for the source of the copper. Copper piping was replaced within the main power house and the results of samplings since the change of material are still pending. |
Violation |
U |
eSMR |
| 1135169 |
08/08/2024 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Daily Maximum limit is 10 mg/L and reported value was 15 mg/L at EFF-003. |
Since EFF003 and EFF005 exceeded the BOD MDEL on the same date, it is thought that the water entering the plant may have had a high BOD due to algae decomposition upstream. The following month, September, samples was non-detect. |
Violation |
U |
eSMR |
| 1135164 |
08/08/2024 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Daily Maximum limit is 10 mg/L and reported value was 42 mg/L at EFF-005. |
Since EFF003 and EFF005 exceeded the BOD MDEL on the same date, it is thought that the water entering the plant may have had a high BOD due to algae decomposition upstream. The following month, September, BOD result was non-detect. |
Violation |
U |
eSMR |
| 1135165 |
08/08/2024 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Daily Maximum limit is 26 lb/day and reported value was 90.8 lb/day at EFF-005. |
Since EFF003 and EFF005 exceeded the BOD MDEL on the same date, it is thought that the water entering the plant may have had a high BOD due to algae decomposition upstream. The sample results for the following month, September, was non-detect. |
Violation |
U |
eSMR |
| 1135167 |
07/31/2024 |
CAT2 |
Copper, Total Recoverable Monthly Average limit is 6.5 ug/L and reported value was 7.6 ug/L at EFF-004. |
There is an on-going source study for the source of the copper. Copper piping was replaced within the main power house and the results of samplings since the change of material are still pending. |
Violation |
U |
eSMR |
| 1130324 |
06/30/2024 |
CAT2 |
Copper, Total Monthly Average limit is 0.01 lb/day and reported value was 0.02 lb/day at EFF-004. |
There is an on-going copper source study for EFF004. In addition to the copper study, there is on going research for potential treatment options for copper to meet the permit limit. |
Violation |
U |
eSMR |
| 1130325 |
06/30/2024 |
CAT2 |
Copper, Total Monthly Average limit is 6.5 ug/L and reported value was 10 ug/L at EFF-004. |
There is an on-going source study for copper. In addition to the source study, there is on going research on potential treatment options for copper to meet the permit limit. |
Violation |
U |
eSMR |
| 1130322 |
06/12/2024 |
CAT2 |
Copper, Total Maximum Daily (MDEL) limit is 13.1 ug/L and reported value was 14 ug/L at EFF-004. |
There is an on-going copper source study for EFF004. In addition to the copper study, there is on-going research for potential treatment options for copper to meet the permit limit. |
Violation |
U |
eSMR |
| 1130321 |
05/31/2024 |
CAT2 |
Copper, Total Monthly Average limit is 6.5 ug/L and reported value was 7.8 ug/L at EFF-004. |
There is an on-going copper source study. In addition to the source study, research is on going for potential treatment options to meet the permit limit. |
Violation |
U |
eSMR |
| 1130323 |
04/30/2024 |
CAT2 |
Copper, Total Monthly Average limit is 6.5 ug/L and reported value was 6.7 ug/L at EFF-004. |
There is an on-going copper source study. In addition to the source study, there is on-going research on potential treatment options to meet the monthly effluent limit. |
Violation |
U |
eSMR |
| 1126782 |
03/31/2024 |
CAT2 |
Copper, Total Recoverable Monthly Average (Mean) limit is 6.5 ug/L and reported value was 7.6 ug/L at EFF-004. |
There is currently a copper study underway for the EFF004 discharge and the copperzorb being used to treat the copper is being studied to determine if it is effectively treating the copper. |
Violation |
U |
eSMR |
| 1126785 |
03/05/2024 |
OEV |
E.coli Single Sample Maximum limit is 235 MPN/100 mL and reported value was 920 MPN/100 mL at EFF-003. |
Due to the discharge pipe being open to the environment, it is believed that animals could have been in the discharge pipe and lead to the contamination of the sample. |
Violation |
U |
eSMR |
| 1126786 |
02/29/2024 |
CAT2 |
Copper, Total Recoverable Maximum Daily (MDEL) limit is 0.02 ug/L and reported value was 0.03 ug/L at EFF-004. |
There is currently a copper study underway for the EFF004 discharge and the copperzorb being used to treat the copper is being studied to determine if it is effectively treating the copper. |
Violation |
U |
eSMR |
| 1126784 |
02/29/2024 |
CAT2 |
Copper, Total Recoverable Maximum Daily (MDEL) limit is 13.1 ug/L and reported value was 23 ug/L at EFF-004. |
There is currently a copper study underway for the EFF004 discharge and the copperzorb being used to treat the copper is being studied to determine if it is effectively treating the copper. |
Violation |
U |
eSMR |
| 1126783 |
02/29/2024 |
CAT2 |
Copper, Total Recoverable Monthly Average (Mean) limit is 0.01 lb/day and reported value was 0.02 lb/day at EFF-004. |
There is currently a copper study underway for the EFF004 discharge and the copperzorb being used to treat the copper is being studied to determine if it is effectively treating the copper. |
Violation |
U |
eSMR |
| 1126781 |
02/29/2024 |
CAT2 |
Copper, Total Recoverable Monthly Average (Mean) limit is 6.5 ug/L and reported value was 12 ug/L at EFF-004. |
There is currently a copper study underway for the EFF004 discharge and the copperzorb being used to treat the copper is being studied to determine if it is effectively treating the copper. |
Violation |
U |
eSMR |
| 1126780 |
01/31/2024 |
CAT2 |
Copper, Total Recoverable Monthly Average (Mean) limit is 6.5 ug/L and reported value was 9.2 ug/L at EFF-004. |
There is currently a copper study underway for the EFF004 discharge and the copperzorb being used to treat the copper is being studied to determine if it is effectively treating the copper. |
Violation |
U |
eSMR |
| 1123646 |
12/31/2023 |
DMON |
The unit was not in operation for a portion of the month of December. After the unit was back in operation, there was miscommunication and a sample was not collected for BOD for the month of December for EFF003. |
There will be weekly verifications that the scheduled sampling has been completed. |
Violation |
U |
eSMR |
| 1123641 |
12/31/2023 |
CAT2 |
Copper, Total Monthly Average limit is 6.5 ug/L and reported value was 10 ug/L at EFF-004. |
The material that is being used to filter the copper in the discharge is being manufactured to fit the needs of the specific effluent based on discharge flow rates and historical copper concentration data. Testing will be needed to confirm if it is lowering the copper concentration to below the permit limits. The filter material will be adjusted as needed to achieve compliance with the permit. |
Violation |
U |
eSMR |
| 1123643 |
11/30/2023 |
CAT2 |
Copper, Total Monthly Average limit is 0.01 lb/day and reported value was 0.02 lb/day at EFF-004. |
The material that is being used to filter the copper in the discharge is being manufactured to fit the needs of the specific effluent based on discharge flow rates and historical copper concentration data. Testing will be needed to confirm if it is lowering the copper concentration to below the permit limits. The filter material will be adjusted as needed to achieve compliance with the permit. |
Violation |
U |
eSMR |
| 1123640 |
11/30/2023 |
CAT2 |
Copper, Total Monthly Average limit is 6.5 ug/L and reported value was 12 ug/L at EFF-004. |
The material that is being used to filter the copper in the discharge is being manufactured to fit the needs of the specific effluent based on discharge flow rates and historical copper concentration data. Testing will be needed to confirm if it is lowering the copper concentration to below the permit limits. The filter material will be adjusted as needed to achieve compliance with the permit. |
Violation |
U |
eSMR |
| 1123639 |
11/28/2023 |
CAT2 |
Copper, Total Maximum Daily (MDEL) limit is 0.02 lb/day and reported value was 0.03 lb/day. |
The material that is being used to filter the copper in the discharge is being manufactured to fit the needs of the specific effluent based on discharge flow rates and historical copper concentration data. Testing will be needed to confirm if it is lowering the copper concentration to below the permit limits. The filter material will be adjusted as needed to achieve compliance with the permit. |
Violation |
U |
eSMR |
| 1123649 |
11/28/2023 |
CAT2 |
Copper, Total Maximum Daily (MDEL) limit is 13.1 ug/L and reported value was 17 ug/L at EFF-004. |
The material that is being used to filter the copper in the discharge is being manufactured to fit the needs of the specific effluent based on discharge flow rates and historical copper concentration data. Testing will be needed to confirm if it is lowering the copper concentration to below the permit limits. The filter material will be adjusted as needed to achieve compliance with the permit. |
Violation |
U |
eSMR |
| 1123642 |
10/31/2023 |
CAT2 |
Copper, Total Monthly Average limit is 0.01 lb/day and reported value was 0.02 lb/day at EFF-004. |
The material that is being used to filter the copper in the discharge is being manufactured to fit the needs of the specific effluent based on discharge flow rates and historical copper concentration data. Testing will be needed to confirm if it is lowering the copper concentration to below the permit limits. The filter material will be adjusted as needed to achieve compliance with the permit. |
Violation |
U |
eSMR |
| 1123638 |
10/31/2023 |
CAT2 |
Copper, Total Monthly Average limit is 6.5 ug/L and reported value was 15 ug/L at EFF-004. |
The material that is being used to filter the copper in the discharge is being manufactured to fit the needs of the specific effluent based on discharge flow rates and historical copper concentration data. Testing will be needed to confirm if it is lowering the copper concentration to below the permit limits. The filter material will be adjusted as needed to achieve compliance with the permit. |
Violation |
U |
eSMR |
| 1123645 |
10/18/2023 |
CAT2 |
Copper, Total Maximum Daily (MDEL) limit is 0.02 lb/day and reported value was 0.03 lb/day at EFF-004. |
The material that is being used to filter the copper in the discharge is being manufactured to fit the needs of the specific effluent based on discharge flow rates and historical copper concentration data. Testing will be needed to confirm if it is lowering the copper concentration to below the permit limits. The filter material will be adjusted as needed to achieve compliance with the permit. |
Violation |
U |
eSMR |
| 1123648 |
10/18/2023 |
CAT2 |
Copper, Total Maximum Daily (MDEL) limit is 13.1 ug/L and reported value was 17 ug/L at EFF-004. |
The material that is being used to filter the copper in the discharge is being manufactured to fit the needs of the specific effluent based on discharge flow rates and historical copper concentration data. Testing will be needed to confirm if it is lowering the copper concentration to below the permit limits. The filter material will be adjusted as needed to achieve compliance with the permit. |
Violation |
U |
eSMR |
| 1123644 |
10/04/2023 |
CAT2 |
Copper, Total Maximum Daily (MDEL) limit is 0.02 lb/day and reported value was 0.03 lb/day at EFF-004. |
The material that is being used to filter the copper in the discharge is being manufactured to fit the needs of the specific effluent based on discharge flow rates and historical copper concentration data. Testing will be needed to confirm if it is lowering the copper concentration to below the permit limits. The filter material will be adjusted as needed to achieve compliance with the permit. |
Violation |
U |
eSMR |
| 1123647 |
10/04/2023 |
CAT2 |
Copper, Total Maximum Daily (MDEL) limit is 13.1 ug/L and reported value was 18 ug/L at EFF-004. |
The material that is being used to filter the copper in the discharge is being manufactured to fit the needs of the specific effluent based on discharge flow rates and historical copper concentration data. Testing will be needed to confirm if it is lowering the copper concentration to below the permit limits. The filter material will be adjusted as needed to achieve compliance with the permit. |
Violation |
U |
eSMR |
| 1121500 |
09/30/2023 |
CAT2 |
Copper, Total Monthly Average limit is 0.01 lb/day and reported value was 0.02 lb/day at EFF-004. |
There is an on-going copper source study for the copper exceedance. Additionally, the copper filter material that is being used to filter the wastewater is being modified by the manufacturer to be effective for EFF004. |
Violation |
B |
eSMR |
| 1121505 |
09/30/2023 |
CAT2 |
Copper, Total Monthly Average limit is 6.5 ug/L and reported value was 12.8 ug/L at EFF-004. |
There is an on-going copper source study for the copper exceedance. Additionally, the copper filter material that is being used to filter the wastewater is being modified by the manufacturer to be effective for EFF004. |
Violation |
B |
eSMR |
| 1121501 |
09/27/2023 |
CAT2 |
Copper, Total Daily Maximum limit is 13.1 ug/L and reported value was 15 ug/L at EFF-004. |
There is an on-going copper source study for the copper exceedance. Additionally, the copper filter material that is being used to filter the wastewater is being modified by the manufacturer to be effective for EFF004.
|
Violation |
U |
eSMR |
| 1121509 |
09/25/2023 |
OEV |
pH Instantaneous Maximum limit is 8.5 SU and reported value was 8.7 SU at EFF-004. |
The exceedance is thought to be due to algae growth in the water. Currently treatment options are being looked into. |
Violation |
U |
eSMR |
| 1121508 |
09/04/2023 |
OEV |
pH Instantaneous Maximum limit is 8.5 SU and reported value was 9.1 SU at EFF-005. |
The exceedance is believed to be due to the algae growth in the water. Currently treatment options are being looked into. |
Violation |
U |
eSMR |
| 1121506 |
09/04/2023 |
OEV |
pH Instantaneous Maximum limit is 8.5 SU and reported value was 9.8 SU at EFF-003. |
The pH exceedance is believed to be due to the algae. At this time treatment options are being looked at. |
Violation |
U |
eSMR |
| 1121507 |
09/04/2023 |
OEV |
pH Instantaneous Maximum limit is 8.5 SU and reported value was 9.8 SU at EFF-004. |
The pH exceedance is believe to be due to algae in the water. Currently treatment options are being looked at. |
Violation |
U |
eSMR |
| 1121504 |
08/31/2023 |
CAT2 |
Copper, Total Monthly Average limit is 0.01 lb/day and reported value was 0.02 lb/day at EFF-004. |
There is an on-going copper source study for the copper exceedance. Additionally, the copper filter material that is being used to filter the wastewater is being modified by the manufacturer to be effective for EFF004 |
Violation |
B |
eSMR |
| 1121503 |
08/31/2023 |
CAT2 |
Copper, Total Monthly Average limit is 6.5 ug/L and reported value was 11.2 ug/L at EFF-004. |
There is an on-going copper source study for the copper exceedance. Additionally, the copper filter material that is being used to filter the wastewater is being modified by the manufacturer to be effective for EFF004 |
Violation |
B |
eSMR |
| 1121510 |
08/05/2023 |
DMON |
A sample for pH, temperature, and dissolved oxygen was not collected during the first week of August. |
The sample collectors were reminded to collect samples weekly of discharges from EFF003 to analyze for ph, temperature, and dissolved oxygen. |
Violation |
U |
eSMR |
| 1121502 |
07/31/2023 |
CAT2 |
Copper, Total Monthly Average limit is 6.5 ug/L and reported value was 9.3 ug/L at EFF-004. |
There is an on-going copper source study for the copper exceedance. Additionally, the copper filter material that is being used to filter the wastewater is being modified by the manufacturer to be effective for EFF004. |
Violation |
B |
eSMR |
| 1120848 |
06/30/2023 |
CAT2 |
Copper, Total Recoverable Monthly Average (Mean) limit is 6.5 ug/L and reported value was 10.3 ug/L at EFF-004. |
|
Violation |
B |
Report |
| 1119010 |
05/31/2023 |
CAT2 |
Copper, Total Monthly Average limit is 6.5 ug/L and reported value was 9.5 ug/L at EFF-004. |
There is a copper study that is on-going for the source of copper and the manufacturer of the filter material is working to make the filter material tailored to this effluent. |
Violation |
U |
eSMR |
| 1119011 |
05/03/2023 |
DMON |
The weekly accelerated copper monitoring sample for EFF004 was collected on 5/3/23. There was miscommunication with the contract lab and the sample was not analyzed. In addition, the sample was disposed of by the contract lab due to the miscommunication. |
The permit administrator will be more involved in the email correspondence with the contract laboratory to prevent further miscommunication. |
Violation |
U |
eSMR |
| 1119013 |
04/30/2023 |
OEV |
Turbidity Monthly Average limit is 5 NTU and reported value was 5.5 NTU at EFF-005. |
The exceedance is thought to be due to the heavy winter rains. Due to the heavy winter rain, the turbidity of the discharge was still being affected in April. The accelerated monitoring conducted in May shows the turbidity decrease throughout the month and an AMEL of 3.4 for the month. The turbidity is back in compliance for the month of May. |
Violation |
U |
eSMR |
| 1119014 |
04/30/2023 |
OEV |
Turbidity Monthly Average limit is 5 NTU and reported value was 8.0 NTU at EFF-004. |
The turbidity exceedances is though to be due to the heavy rain season. The accelerated turbidity monitoring in May show the turbidity lowering through out the month. The EFF004 turbidity AMEL was met for the month of May. |
Violation |
U |
eSMR |
| 1120847 |
04/30/2023 |
CAT1 |
Oil and Grease Monthly Average (Mean) limit is 15 lb/day and reported value was 16.5 lb/day at EFF-004. |
|
Violation |
B |
Report |
| 1119012 |
04/30/2023 |
CAT1 |
Oil and Grease Monthly Average limit is 10 mg/L and reported value was 11 mg/L at EFF-004. |
It is uncertain as to what caused the exceedance at this time. Accelerated monitoring was started in July and will continue until the AMEL is met. |
Violation |
U |
eSMR |
| 1119008 |
04/30/2023 |
CAT2 |
Copper, Total Monthly Average limit is 6.5 ug/L and reported value was 11.2 ug/L at EFF-004. |
There is a copper study that is on-going for the source of copper and the manufacturer of the filter material is working to make the filter material tailored to this effluent. |
Violation |
U |
eSMR |
| 1119009 |
04/26/2023 |
CAT2 |
Copper, Total Daily Maximum limit is 13.1 ug/L and reported value was 14 ug/L at EFF-004. |
There is a copper study that is on-going for the source of copper and the manufacturer of the filter material is working to make the filter material tailored to this effluent. |
Violation |
U |
eSMR |
| 1116225 |
03/31/2023 |
DMON |
The dissolved oxygen was not monitored on 2/2/23 due to issues with the monitoring equipment. There was miscommunication following the missing DO monitoring and the monitoring for quarter 1 was not completed. |
LADWP will be tracing the sampling and verifying with the COCs weekly to verify that all sampling is being completed. |
Violation |
B |
eSMR |
| 1116229 |
02/28/2023 |
OEV |
Turbidity Monthly Average (Mean) limit is 5 NTU and reported value was 33 NTU at EFF-005. |
Due to the storm runoff, the turbidity in the water increased. Accelerated monitoring was started for the exceedance but the turbidity level is expected to decrease with the decrease in storm runoff. |
Violation |
B |
eSMR |
| 1116228 |
02/28/2023 |
OEV |
Turbidity Monthly Average (Mean) limit is 5 NTU and reported value was 47 NTU at EFF-003. |
Due to the storm runoff, the turbidity in the water increased. Accelerated monitoring was started for the exceedance but the turbidity level is expected to decrease with the decrease in storm runoff. |
Violation |
B |
eSMR |
| 1116227 |
02/28/2023 |
CAT2 |
Copper, Total Monthly Average (Mean) limit is 6.5 ug/L and reported value was 10 ug/L at EFF-004. |
LADWP met with the manufacturer of the filter product being used to improve the performance of the material to meet the permit limits. In addition, LADWP is continuing to work on a source analysis. |
Violation |
B |
eSMR |
| 1116226 |
02/02/2023 |
OEV |
Turbidity Daily Maximum limit is 25 NTU and reported value was 33 NTU at EFF-005. |
Due to the storm runoff, the turbidity in the water increased. Accelerated monitoring was started for the exceedance but the turbidity level is expected to decrease with the decrease in storm runoff. |
Violation |
U |
eSMR |
| 1116224 |
02/02/2023 |
OEV |
Turbidity Daily Maximum limit is 25 NTU and reported value was 47 NTU at EFF-003. |
Due to the storm runoff, the turbidity in the water increased. Accelerated monitoring was started for the exceedance but the turbidity level is expected to decrease with the decrease in storm runoff. |
Violation |
U |
eSMR |
| 1112961 |
11/30/2022 |
CAT2 |
Copper, Total Monthly Average (Mean) limit is 6.5 ug/L and reported value was 10.1 ug/L at EFF-004. |
LADWP is currently working with the manufacturer of a copper filter material to figure out how much material is needed to filter the copper from the effluent and how often the filter material needs to be changed out to be effective at lowering the copper concentration in the effluent. |
Violation |
U |
eSMR |
| 1117743 |
11/30/2022 |
CAT2 |
Copper, Total Recoverable Monthly Average (Mean) limit is 0.01 lb/day and reported value was 0.02 lb/day at EFF-004. |
|
Violation |
B |
Report |
| 1112963 |
10/31/2022 |
CAT2 |
Copper, Total Monthly Average (Mean) limit is 6.5 ug/L and reported value was 10.1 ug/L at EFF-004. |
LADWP is currently working with the manufacturer of a copper filter material to figure out how much material is needed to filter the copper from the effluent and how often the filter material needs to be changed out to be effective at lowering the copper concentration in the effluent. |
Violation |
U |
eSMR |
| 1117742 |
10/31/2022 |
CAT2 |
Copper, Total Recoverable Monthly Average (Mean) limit is 0.01 lb/day and reported value was 0.02 lb/day at EFF-004. |
|
Violation |
B |
Report |
| 1112962 |
10/11/2022 |
CAT1 |
Chloride Daily Maximum limit is 100 mg/L and reported value was 102 mg/L at EFF-003. |
The source for the exceedance is currently unknown but is being investigated. Analysis for 1st Quarter 2023 chloride samples from EFF003 will be monitored to see if the exceedance is still an issue. |
Violation |
U |
eSMR |
| 1109743 |
09/30/2022 |
CAT2 |
Copper, Total Monthly Average limit is 6.5 mg/L and reported value was 7.8 mg/L at EFF-004. |
Since the dissolved copper is within the AMEL, it was thought that the Oil Water Separator needed maintenance to improve the function of the removal of the suspended solids. The Oil Water Separator was originally scheduled to be maintained in August but due to plant operations it was moved to the middle of September. After the maintenance, there was no improvement in the copper concentration. A new material, copperzorb, has been added to the discharge area of the Oil Water Separator to see if this will filter out the remaining suspended copper. |
Violation |
U |
eSMR |
| 1109742 |
08/31/2022 |
DMON |
Accelerated copper sample was unable to be collected due to the Route Fire that caused a safety concern for the one way in and out access for Castaic Power Plant as well as the freeway closure. |
Due to the safety concern for access to the power plant to collect samples, there is no corrective action. |
Violation |
U |
eSMR |
| 1109739 |
08/31/2022 |
CAT2 |
Copper, Total Monthly Average limit is 6.5 mg/L and reported value was 10.7 mg/L at EFF-004. |
Since the dissolved copper is within the AMEL, it was thought that the Oil Water Separator needed maintenance to improve the function of the removal of the suspended solids. The Oil Water Separator was originally scheduled to be maintained in August but due to plant operations it was moved to the middle of September. After the maintenance, there was no improvement in the copper concentration. A new material, copperzorb, has been added to the discharge area of the Oil Water Separator to see if this will filter out the remaining suspended copper. |
Violation |
U |
eSMR |
| 1117718 |
08/31/2022 |
CAT2 |
Copper, Total Recoverable Monthly Average (Mean) limit is 0.01 lb/day and reported value was 0.02 lb/day at EFF-004. |
|
Violation |
B |
Report |
| 1109741 |
08/16/2022 |
CAT2 |
Copper, Total Maximum Daily (MDEL) limit is 13.1 mg/L and reported value was 14.0 mg/L at EFF-004. |
Since the dissolved copper is within the AMEL, it was thought that the Oil Water Separator needed maintenance to improve the function of the removal of the suspended solids. The Oil Water Separator was originally scheduled to be maintained in August but due to plant operations it was moved to the middle of September. After the maintenance, there was no improvement in the copper concentration. A new material, copperzorb, has been added to the discharge area of the Oil Water Separator to see if this will filter out the remaining suspended copper. |
Violation |
B |
eSMR |
| 1109740 |
07/31/2022 |
CAT2 |
Copper, Total Monthly Average limit is 6.5 mg/L and reported value was 7.5 mg/L at EFF-004. |
Since the dissolved copper is within the AMEL, it was thought that the Oil Water Separator needed maintenance to improve the function of the removal of the suspended solids. The Oil Water Separator was originally scheduled to be maintained in August but due to plant operations it was moved to the middle of September. After the maintenance, there was no improvement in the copper concentration. A new material, copperzorb, has been added to the discharge area of the Oil Water Separator to see if this will filter out the remaining suspended copper. |
Violation |
U |
eSMR |
| 1106771 |
06/30/2022 |
CAT2 |
Copper, Total Monthly Average limit is 6.5 ug/L and reported value was 9.8 ug/L at EFF-004. |
The manufacturer of the oil water separator equipment is being consulted to determine if there are any issues with the current operation of the equipment. The dissolved copper results are consistently below the AMEL, which means that the suspended solids are not being completely removed. The oil water separator will also be undergoing a maintenance clean out at the beginning of August to remove any build up that may be stuck in the equipment. |
Violation |
U |
eSMR |
| 1106775 |
06/16/2022 |
CAT2 |
Copper, Total Daily Maximum limit is 0.02 lb/day and reported value was 0.03 lb/day at EFF-004. |
The manufacturer of the oil water separator equipment is being consulted to determine if there are any issues with the current operation of the equipment. The dissolved copper results are consistently below the AMEL, which means that the suspended solids are not being completely removed. The oil water separator will also be undergoing a maintenance clean out at the beginning of August to remove any build up that may be stuck in the equipment. |
Violation |
U |
eSMR |
| 1106774 |
06/16/2022 |
CAT2 |
Copper, Total Daily Maximum limit is 13.1 ug/L and reported value was 19.4 ug/L at EFF-004. |
The manufacturer of the oil water separator equipment is being consulted to determine if there are any issues with the current operation of the equipment. The dissolved copper results are consistently below the AMEL, which means that the suspended solids are not being completely removed. The oil water separator will also be undergoing a maintenance clean out at the beginning of August to remove any build up that may be stuck in the equipment. |
Violation |
U |
eSMR |
| 1106772 |
05/31/2022 |
DMON |
A BOD sample was not collected for EFF003 for the month of May. Currently the duration of the discharge from EFF003 does not provide enough time to complete sample collection. |
An alternative approach to the sampling is being explored. A discussion with the Waterboard will occur once an alternative is found to collecting the samples. |
Violation |
B |
eSMR |
| 1106770 |
05/31/2022 |
CAT2 |
Copper, Total Monthly Average (Mean) limit is 6.5 ug/L and reported value was 6.6 ug/L at EFF-004. |
The manufacturer of the oil water separator equipment is being consulted to determine if there are any issues with the current operation of the equipment. The dissolved copper results are consistently below the AMEL, which means that the suspended solids are not being completely removed. The oil water separator will also be undergoing a maintenance clean out at the beginning of August to remove any build up that may be stuck in the equipment. |
Violation |
U |
eSMR |
| 1117716 |
05/02/2022 |
LREP |
Report submitted 1 day late. |
|
Violation |
B |
Report |
| 1106768 |
04/30/2022 |
DMON |
The BOD analysis for EFF003 for April was not completed per the approved test method in Title 40 Cod of Federal Regulations Section 136.3. The sample was incubated for 11 days rather than the 5 days specified by method Standard Methods 5210B. |
The Laboratory will be implementing a written system to record the dates the samples are to be removed from the incubator that will be visible on the equipment. This will avoid samples remining in the incubator past the required time even if the analyst that started the test isn't available. Additionally, the LADWP permit administrator will be following up with the laboratory two weeks after samples are collected to confirm there are no issues with the analysis that would require resampling. |
Violation |
B |
eSMR |
| 1106769 |
04/30/2022 |
DMON |
The BOD analysis for EFF004 for April was not completed per the approved test method in Title 40 Cod of Federal Regulations Section 136.3. The sample was incubated for 11 days rather than the 5 days specified by method Standard Methods 5210B. |
The Laboratory will be implementing a written system to record the dates the samples are to be removed from the incubator that will be visible on the equipment. This will avoid samples remining in the incubator past the required time even if the analyst that started the test isn't available. Additionally, the LADWP permit administrator will be following up with the laboratory two weeks after samples are collected to confirm there are no issues with the analysis that would require resampling. |
Violation |
B |
eSMR |
| 1106767 |
04/30/2022 |
DMON |
The BOD analysis for EFF005 for April was not completed per the approved test method in Title 40 Cod of Federal Regulations Section 136.3. The sample was incubated for 11 days rather than the 5 days specified by method Standard Methods 5210B.
|
The Laboratory will be implementing a written system to record the dates the samples are to be removed from the incubator that will be visible on the equipment. This will avoid samples remining in the incubator past the required time even if the analyst that started the test isn't available. Additionally, the LADWP permit administrator will be following up with the laboratory two weeks after samples are collected to confirm there are no issues with the analysis that would require resampling. |
Violation |
B |
eSMR |
| 1106773 |
04/30/2022 |
CAT2 |
Copper, Total Monthly Average (Mean) limit is 6.5 ug/L and reported value was 10.36 ug/L at EFF-004. |
The manufacturer of the oil water separator equipment is being consulted to determine if there are any issues with the current operation of the equipment. The dissolved copper results are consistently below the AMEL, which means that the suspended solids are not being completely removed. The oil water separator will also be undergoing a maintenance clean out at the beginning of August to remove any build up that may be stuck in the equipment. |
Violation |
B |
eSMR |
| 1117748 |
04/25/2022 |
CAT2 |
Copper, Total Recoverable Daily Maximum limit is 13.1 ug/L and reported value was 21 ug/L at EFF-004. |
|
Violation |
B |
Report |
| 1103772 |
03/31/2022 |
CAT2 |
Copper, Total Monthly Average (Mean) limit is 6.5 ug/L and reported value was 7.7 ug/L at EFF-004. |
The root-cause analysis is still on-going and research is being conducted to treat the copper exceedance once the cause of the exceedance is identified. |
Violation |
U |
eSMR |
| 1117715 |
02/28/2022 |
DMON |
Total Suspended Solids was collected at EFF-003, but the sample was not analyzed due to laboratory database management. |
|
Violation |
B |
Report |
| 1103773 |
02/28/2022 |
CAT2 |
Copper, Total Monthly Average (Mean) limit is 6.5 ug/L and reported value was 7.0 ug/L at EFF-004. |
The root-cause analysis is still on-going and research is being conducted to treat the copper exceedance once the cause of the exceedance is identified. |
Violation |
B |
eSMR |
| 1103771 |
02/11/2022 |
OEV |
E.coli Single Sample Maximum limit is 235 MPN/100 mL and reported value was 2420 MPN/100 mL at EFF-003. |
The field technicians that collect the water samples for analysis have been informed of the exceedance and instructed to rinse the sampling equipment with ethanol to prevent contamination of the sample from the equipment. Field technicians have also been instructed of the importance of proper sample handling to prevent contaminating the sample. |
Violation |
U |
eSMR |
| 1103774 |
01/31/2022 |
CAT2 |
Copper, Total Monthly Average (Mean) limit is 6.5 ug/L and reported value was 7.5 ug/L at EFF-004. |
The root-cause analysis is still on-going and research is being conducted to treat the copper exceedance once the cause of the exceedance is identified. |
Violation |
U |
eSMR |
| 1100019 |
12/31/2021 |
CAT2 |
Copper, Total Monthly Average limit is 6.5 ug/L and reported value was 9.36 ug/L at EFF-004. |
A copper root-cause analysis is on-going to locate the source of the copper exceedance for EFF004. The data from the source study is being compared to the total copper accelerated monitoring results for EFF004 and the historical total copper results for EFF004. |
Violation |
B |
eSMR |
| 1100017 |
11/30/2021 |
CAT2 |
Copper, Total Monthly Average limit is 6.5 ug/L and reported value was 15.85 ug/L at EFF-004. |
A copper root-cause analysis is on-going at Castaic Power Plant. The data is collected is compared to the total copper accelerated monitoring results for EFF004 and the historical total copper results for EFF004. |
Violation |
B |
eSMR |
| 1117708 |
11/30/2021 |
CAT2 |
Copper, Total Recoverable Monthly Average (Mean) limit is 0.01 lb/day and reported value was 0.02 lb/day at EFF-004. |
|
Violation |
B |
Report |
| 1100016 |
11/16/2021 |
CAT2 |
Copper, Total Daily Maximum limit is 13.1 ug/L and reported value was 26.4 ug/L at EFF-004. |
A copper root-cause analysis is on-going at Castaic Power Plant. The data is collected is compared to the total copper accelerated monitoring results for EFF004 and the historical total copper results for EFF004. |
Violation |
B |
eSMR |
| 1117707 |
11/16/2021 |
CAT2 |
Copper, Total Recoverable Daily Maximum limit is 0.02 lb/day and reported value was 0.04 lb/day at EFF-004. |
|
Violation |
B |
Report |
| 1100020 |
11/08/2021 |
CAT2 |
Copper, Total Daily Maximum limit is 13.1 ug/L and reported value was 13.2 ug/L at EFF-004. |
A copper root-cause analysis is on-going at Castaic Power Plant. The data is collected is compared to the total copper accelerated monitoring results for EFF004 and the historical total copper results for EFF004. |
Violation |
B |
eSMR |
| 1100015 |
10/31/2021 |
CAT2 |
Copper, Total Monthly Average limit is 6.5 ug/L and reported value was 12.65 ug/L at EFF-004. |
A copper root-cause analysis is on-going at Castaic Power Plant. The data is collected is compared to the total copper accelerated monitoring results for EFF004 and the historical total copper results for EFF004. |
Violation |
B |
eSMR |
| 1117706 |
10/31/2021 |
CAT2 |
Copper, Total Recoverable Monthly Average (Mean) limit is 0.01 lb/day and reported value was 0.02 lb/day at EFF-004. |
|
Violation |
B |
Report |
| 1100018 |
10/25/2021 |
CAT2 |
Copper, Total Daily Maximum limit is 13.1 ug/L and reported value was 14.3 ug/L at EFF-004. |
A copper root-cause analysis is on-going at Castaic Power Plant. The data is collected is compared to the total copper accelerated monitoring results for EFF004 and the historical total copper results for EFF004. |
Violation |
B |
eSMR |
| 1096119 |
09/30/2021 |
CAT2 |
Copper, Total Recoverable Monthly Average (Mean) limit is 6.5 ug/L and reported value was 9 ug/L at EFF-004. |
A source study is on-going to locate the source of the copper in the system. |
Violation |
U |
eSMR |
| 1096120 |
08/31/2021 |
CAT2 |
Copper, Total Recoverable Monthly Average (Mean) limit is 6.5 ug/L and reported value was 9.7 ug/L at EFF-004. |
A source study has been on-going to find the source of copper in the system. |
Violation |
U |
eSMR |
| 1096123 |
08/09/2021 |
DMON |
The quarterly sample for ammonia analysis was collected on July 7, 2021. The laboratory analyzed the sample on August 9, 2021. The holding time for ammonia per method EPA350.1 is 28 days. While the ammonia analysis result, 0.04 mg/L, did not exceed the permit average monthly effluent limitation (AMEL), the ammonia sample was analyzed past the method holding time, 33 days after the sample was collected. |
The laboratory has been instructed to contact LADWP immediately if there are any problems with sample analysis in the future and to provide laboratory results before the end of the quarter so that additional samples can be collected within a reasonable time period if needed. The LADWP permit administrator will be responsible for contacting the laboratory 7 days after the sample collection date to verify that the sample has been received and the analysis process has started. The LADWP permit administrator will follow up with the laboratory weekly until the laboratory results are received. |
Violation |
B |
eSMR |
| 1096124 |
08/09/2021 |
DMON |
The quarterly sample for ammonia analysis was collected on July 7, 2021. The laboratory analyzed the sample on August 9, 2021. The holding time for ammonia per method EPA350.1 is 28 days. While the ammonia analysis result, 0.04 mg/L, did not exceed the permit average monthly effluent limitation (AMEL), the ammonia sample was analyzed past the method holding time, 33 days after the sample was collected. |
The laboratory has been instructed to contact LADWP immediately if there are any problems with sample analysis in the future and to provide laboratory results before the end of the quarter so that additional samples can be collected within a reasonable time period if needed. The LADWP permit administrator will be responsible for contacting the laboratory 7 days after the sample collection date to verify that the sample has been received and the analysis process has started. The LADWP permit administrator will follow up with the laboratory weekly until the laboratory results are received. |
Violation |
B |
eSMR |
| 1096122 |
08/09/2021 |
DMON |
The quarterly sample for ammonia analysis was collected on July 7, 2021. The laboratory analyzed the sample on August 9, 2021. The holding time for ammonia per method EPA350.1 is 28 days. While the ammonia analysis result, 0.05 mg/L, did not exceed the permit average monthly effluent limitation (AMEL), the ammonia sample was analyzed past the method holding time, 33 days after the sample was collected. |
The laboratory has been instructed to contact LADWP immediately if there are any problems with sample analysis in the future and to provide laboratory results before the end of the quarter so that additional samples can be collected within a reasonable time period if needed. The LADWP permit administrator will be responsible for contacting the laboratory 7 days after the sample collection date to verify that the sample has been received and the analysis process has started. The LADWP permit administrator will follow up with the laboratory weekly until the laboratory results are received. |
Violation |
B |
eSMR |
| 1096121 |
07/31/2021 |
CAT2 |
Copper, Total Recoverable Monthly Average (Mean) limit is 6.5 ug/L and reported value was 8.9 ug/L at EFF-004. |
A source study for copper has been on-going to find the source of copper in the process. |
Violation |
B |
eSMR |
| 1092738 |
05/07/2021 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Daily Maximum limit is 10 mg/L and reported value was 11.8 mg/L at EFF-005. |
The cause of the exceedance is currently unknown. It is possible that the exceedance is due to decaying plant matter in the discharge pipe because it is open to the environment. The BOD results for April and June for EFF005 were non-detect. EFF005 is in compliance as of June 2021. |
Violation |
U |
eSMR |
| 1092739 |
04/06/2021 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Daily Maximum limit is 10 mg/L and reported value was 25.6 mg/L at EFF-003. |
A root cause analysis is being conducted for EFF003. The tailrace is being isolated during sampling to see if the source of the BOD is in the tailrace. The BOD results for EFF003 for May and June were non-detect. EFF003 is in compliance as of May 2021. |
Violation |
U |
eSMR |
| 1089646 |
02/28/2021 |
OEV |
Turbidity Monthly Average (Mean) limit is 5 NTU and reported value was 8.9 NTU at EFF-005. |
Accelerated turbidity monitoring began on 4/1/21. The cause of the individual turbidity exceedance is being investigated at this time. The accelerated sampling results have been meeting the AMEL so far. |
Violation |
B |
eSMR |
| 1089645 |
02/02/2021 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Maximum Daily (MDEL) limit is 10 mg/L and reported value was 90 mg/L at EFF-003. |
The Castaic Power Plant staff was consulted to find a sampling locations that would provide the best representation of the discharge from the Unit 7 tailrace. A manhole, about 100 yards upstream of where the discharge meets Elderberry Forebay, was found to be able to allow for collecting samples from the Unit 7 tailrace discharge. The staff collecting the sample use a pump to collect the water in the tailrace tunnel. |
Violation |
U |
eSMR |
| 1089644 |
01/31/2021 |
CAT2 |
Copper, Total Recoverable Monthly Average (Mean) limit is 6.5 ug/L and reported value was 6.7 ug/L at EFF-004. |
The trend analysis from the past violations has shown that the copper concentration increases in the second half of the year. This happens to coincide with the algae blooms that Pyramid Lake has in the summer time. Algae blooms are usually treated with a copper based product which reflects the higher copper concentrations at Castaic Power Plant in the second half of the year. To prevent the elevated copper concentrations from discharging to Elderberry Forebay, the Metalzorb booms will be replaced monthly. Previously the Metalzorb booms were being replaced every 4 months. |
Violation |
U |
eSMR |
| 1089647 |
01/06/2021 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Maximum Daily (MDEL) limit is 10.0 mg/L and reported value was 36.0 mg/L at EFF-003. |
The Castaic Power Plant staff was consulted to find a sampling locations that would provide the best representation of the discharge from the Unit 7 tailrace. A manhole, about 100 yards upstream of where the discharge meets Elderberry Forebay, was found to be able to allow for collecting samples from the Unit 7 tailrace discharge. The staff collecting the sample use a pump to collect the water in the tailrace tunnel. |
Violation |
B |
eSMR |
| 1085414 |
12/31/2020 |
DMON |
Dissolved Oxygen for EFF-005 was not analyzed for the fourth quarter of 2020. The dissolved oxygen meter was broken at the sample location and a reading was not able to be taken. |
New parts of the dissolved oxygen meter were ordered to complete future analysis. The laboratory was asked to notify staff the next time an analysis can not be completed so that action can be taken to make sure all sampling requirements are completed. |
Violation |
U |
eSMR |
| 1085413 |
12/31/2020 |
CAT2 |
Copper, Total Recoverable Monthly Average (Mean) limit is 6.5 mg/L and reported value was 7.7 mg/L at EFF-004. |
It is being discussed with the manufacturer on how to effectively use the Metalzorb booms to lower the copper concentration in the discharge and not cause a back up in the floor drains. A root cause analysis will be conducted in the next quarter to isolate the source. |
Violation |
B |
eSMR |
| 1085415 |
12/01/2020 |
DMON |
A BOD sample was not collected for EFF-004 for the month of December. There was insufficient communication when permit management duties were transferred. The BOD results for October and November were ND. |
A compliance matrix and a sample tracking log was created to prevent missed samples in the future. The sample tracking log will track the sampling event dates and parameters sampled and the compliance matrix will note all the parameters and frequency of sampling for each effluent discharge location. This will provide up to date information for permit sampling requirements. |
Violation |
B |
eSMR |
| 1085416 |
12/01/2020 |
DMON |
A BOD sample was not collected for analysis at discharge location EFF-005 for the month of December. There was insufficient communication while permit management duties were being transferred. The BOD results for October and November were ND. |
A compliance matrix and a sample tracking log was created to prevent missed samples in the future. The sample tracking log will track the sampling event dates and parameters sampled and the compliance matrix will note all the parameters and frequency of sampling for each effluent discharge location. This will provide up to date information for permit sampling requirements. |
Violation |
B |
eSMR |
| 1085407 |
12/01/2020 |
DMON |
A BOD sample was not collected from EFF003 for the month of December. There was insufficient communication due to permit management duties being transferred. |
A compliance matrix and a sample tracking log has been created to prevent missed samples in the future. The sample tracking log will track the sampling event dates and parameters sampled and the compliance matrix will note all the parameters and frequency of sampling for each effluent discharge location. This will provide up to date information for permit sampling requirements. |
Violation |
B |
eSMR |
| 1085412 |
11/30/2020 |
CAT2 |
Copper, Total Recoverable Monthly Average (Mean) limit is 6.5 mg/L and reported value was 8.4 mg/L at EFF-004. |
It is being discussed with the manufacturer on how to effectively use the Metalzorb booms to lower the copper concentration in the discharge and not cause a back up in the floor drains. A root cause analysis will be conducted in the next quarter to isolate the source. |
Violation |
U |
eSMR |
| 1085410 |
11/12/2020 |
OEV |
E.coli Single Sample Maximum limit is 235 MPN/100 mL and reported value was 610 MPN/100 mL at EFF-003. |
The persons collecting the samples have been notified of the exceedances and reminded of proper handling procedures. Following the exceedances, the results of the E. coli was 1 MPN/100mL bring the effluent back into the compliance with the single sample maximum limit. |
Violation |
U |
eSMR |
| 1085409 |
11/04/2020 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Maximum Daily (MDEL) limit is 10 mg/L and reported value was 91 mg/L at EFF-003. |
Unit 7 discharge will continue to be monitored in order to find the cause of the BOD exceedance. |
Violation |
B |
eSMR |
| 1085411 |
10/31/2020 |
CAT2 |
Copper, Total Recoverable Monthly Average (Mean) limit is 6.5 mg/L and reported value was 12.6 mg/L at EFF-004. |
It is being discussed with the manufacturer on how to effectively use the Metalzorb booms to lower the copper concentration in the discharge and not cause a back up in the floor drains. |
Violation |
U |
eSMR |
| 1085406 |
10/21/2020 |
OEV |
E.coli Single Sample Maximum limit is 235 MPN/100 mL and reported value was 870 MPN/100 mL at EFF-003. |
The persons collecting the samples have been notified of the exceedances and reminded of proper handling procedures. Following the exceedances, the results of the E. coli was 50 MPN/100mL bring the effluent back into the compliance with the single sample maximum limit. |
Violation |
U |
eSMR |
| 1117705 |
10/21/2020 |
CAT2 |
Copper, Total Recoverable Daily Maximum limit is 0.02 lb/day and reported value was 0.03 lb/day at EFF-004. |
|
Violation |
B |
Report |
| 1085408 |
10/21/2020 |
CAT2 |
Copper, Total Recoverable Maximum Daily (MDEL) limit is 13.1 ug/L and reported value was 22 ug/L at EFF-004. |
A root cause analysis is being conducted to locate the source of the copper exceedance. |
Violation |
U |
eSMR |
| 1085417 |
10/15/2020 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Daily Maximum limit is 10 mg/L and reported value was 68 mg/L at EFF-003. |
Unit 7 discharge will continue to be monitored to find the cause of the BOD exceedance. |
Violation |
B |
eSMR |
| 1080950 |
09/30/2020 |
CAT2 |
Copper, Total Recoverable 30-Day Average limit is 6.5 ug/L and reported value was 9.76 ug/L at EFF-004. |
An investigation is being conducted to determine if Pyramid Lake was treated with copper-based products to mitigate for potential algal blooms. Pyramid Lake typically experiences algal blooms in the summer months due to the rising heat conditions and lower-than-normal flows. |
Violation |
U |
eSMR |
| 1080949 |
09/09/2020 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Maximum Daily (MDEL) limit is 10 mg/L and reported value was 17 mg/L at EFF-003. |
Two weeks prior to LADWP's monthly sampling event on September 09, 2020, there were multiple wildfires in the area of Castaic Power Plant and it is possible ash and other organics may have deposited into Elderberry Forebay, which is where the sample was taken. The addition of organics into the forebay may have caused this elevated spike. Further, existing algae and/or decomposing plant material in the Tailrace may have caused the BOD exceedance as well. |
Violation |
U |
eSMR |
| 1080948 |
08/31/2020 |
CAT2 |
Copper, Total Recoverable 30-Day Average limit is 6.5 ug/L and reported value was 6.73 ug/L at EFF-004. |
An investigation is being conducted to determine if Pyramid Lake was treated with copper-based products to mitigate for potential algal blooms. Pyramid Lake typically experiences algal blooms in the summer months due to the rising heat conditions and lower-than-normal flows. |
Violation |
U |
eSMR |
| 1080946 |
08/05/2020 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Maximum Daily (MDEL) limit is 10 mg/L and reported value was 89 mg/L at EFF-005. |
The cause for this elevated exceedance is currently unknown and is being investigated. A sample taken on September 09, 2020 resulted in a non-detect, bringing the BOD back into compliance with the effluent limits. Because the samples for both July and September came back non-detect and the spike in BOD for the month of August was so drastic, it is possible that the analysis for the month of August did not return a statistically representative result. |
Violation |
U |
eSMR |
| 1080947 |
07/31/2020 |
CAT2 |
Copper, Total Recoverable 30-Day Average limit is 6.5 ug/L and reported value was 7.9 ug/L at EFF-004. |
An investigation is being conducted to determine if Pyramid Lake was treated with copper-based products to mitigate for potential algal blooms. Pyramid Lake typically experiences algal blooms in the summer months due to the rising heat conditions and lower-than-normal flows. |
Violation |
U |
eSMR |
| 1077735 |
06/19/2020 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Daily Maximum limit is 10 mg/L and reported value was 20 mg/L at EFF-003. |
Source of exceedance is being investigated. |
Violation |
U |
eSMR |
| 1077733 |
06/19/2020 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Daily Maximum limit is 10 mg/L and reported value was 23 mg/L at EFF-005. |
The cause of the exceedence is being investigated but no known upsets or sources of contamination have been identified. |
Violation |
U |
eSMR |
| 1077734 |
06/19/2020 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Daily Maximum limit is 26 lb/day and reported value was 49.72 lb/day at EFF-005. |
The cause of the exceedence is being investigated but no known upsets or sources of contamination have been identified. |
Violation |
U |
eSMR |
| 1077736 |
06/04/2020 |
OEV |
E.coli Single Sample Maximum limit is 235.0 MPN/100 mL and reported value was 290.0 MPN/100 mL at EFF-003. |
Cause of the exceedance is being investigated. Improved sample collection activity will include avoiding wildlife residue near sampling points to avoid contamination of sample. |
Violation |
B |
eSMR |
|
Report displays most recent five years of violations. Refer to the Interactive Violation Report for more data.
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