| Violation ID |
Occurred Date |
Violation Type |
(-) Violation Description |
Corrective Action |
Status |
Classification |
Source |
| 1147866 |
08/26/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 5.7 MPN/100 mL at EFF-001A. |
All total coliform sample results from Discharge Location 001A from July 2025 (16 samples) as well as the August dates preceding the first detection (8 samples) were less than 2.2 MPN/100 mL. It is important to note that the detections did not persist later into the reporting month. |
Violation |
U |
eSMR |
| 1147865 |
08/25/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 6.8 MPN/100 mL at EFF-001A. |
All total coliform sample results from Discharge Location 001A from July 2025 (16 samples) as well as the August dates preceding the first detection (8 samples) were less than 2.2 MPN/100 mL. It is important to note that the detections did not persist later into the reporting month. |
Violation |
U |
eSMR |
| 1147862 |
08/23/2025 |
DMON |
This is a change in monitoring requirements compared to the previous permit. During the week of August 17 through August 23, 2025, discharge occurred at both Discharge Locations 001A and 001B; however, nitrite, nitrate, and nitrate plus nitrite were only monitored at EFF-001B. The new monitoring requirements contained in the new permit that became effective August 1 helped create the situation that led to this inadvertent oversight. |
City staff have been retrained on the 2025 NPDES permit¿s monitoring requirements to help minimize the possibility of this reoccurring. |
Violation |
U |
eSMR |
| 1147864 |
08/23/2025 |
DMON |
This is a change in monitoring requirements compared to the previous permit. During the week of August 17 through August 23, 2025, discharge occurred at both Discharge Locations 001A and 001B; however, nitrite, nitrate, and nitrate plus nitrite were only monitored at EFF-001B. The new monitoring requirements contained in the new permit that became effective August 1 helped create the situation that led to this inadvertent oversight. |
City staff have been retrained on the 2025 NPDES permit¿s monitoring requirements to help minimize the possibility of this reoccurring. |
Violation |
U |
eSMR |
| 1147861 |
08/23/2025 |
DMON |
This is a change in monitoring requirements compared to the previous permit. During the week of August 17 through August 23, 2025, discharge occurred at both Discharge Locations 001A and 001B; however, nitrite, nitrate, and nitrate plus nitrite were only monitored at EFF-001B. The new monitoring requirements contained in the new permit that became effective August 1 helped create the situation that led to this inadvertent oversight. |
City staff have been retrained on the 2025 NPDES permit¿s monitoring requirements to help minimize the possibility of this reoccurring. |
Violation |
U |
eSMR |
| 1147860 |
08/23/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 7.3 MPN/100 mL at EFF-001A. |
All total coliform sample results from Discharge Location 001A from July 2025 (16 samples) as well as the August dates preceding the first detection (8 samples) were less than 2.2 MPN/100 mL. It is important to note that the detections did not persist later into the reporting month. |
Violation |
U |
eSMR |
| 1147863 |
08/23/2025 |
CAT1 |
Ammonia, Total (as N) Weekly Average (Mean) limit is 2.5 mg/L and reported value was 3.1 mg/L at EFF-001A. |
It is believed that the City unintentionally overloaded the aeration basins with ammonia during this process, resulting in the abnormally high ammonia concentrations measured in the effluent on August 21 and 22, 2025, and thus the weekly average ammonia violation for that week. As described above, the City only discharged from Discharge Location 001B on August 21 and 22. The effluent ammonia concentrations returned to typical values once discharging to Discharge Location 001A resumed because the pond and tertiary facilities on west bank of the river remove this ammonia. The aeration basins can treat the facility¿s ammonia load under normal operating conditions and the digester cleaning has since been completed. |
Violation |
U |
eSMR |
| 1147856 |
08/23/2025 |
CAT1 |
Ammonia, Total (as N) Weekly Average limit is 2.5 mg/L and reported value was 3.1 mg/L at EFF-001B. |
The City only discharged from Discharge Location 001B on August 21 and 22. The effluent ammonia concentrations returned to typical values once discharging to Discharge Location 001A resumed because the pond and tertiary facilities on west bank of the river remove this ammonia. The aeration basins can treat the facility¿s ammonia load under normal operating conditions and the digester cleaning has since been completed. |
Violation |
U |
eSMR |
| 1147859 |
08/22/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 6.8 MPN/100 mL at EFF-001A. |
All total coliform sample results from Discharge Location 001A from July 2025 (16 samples) as well as the August dates preceding the first detection (8 samples) were less than 2.2 MPN/100 mL. It is important to note that the detections did not persist later into the reporting month. |
Violation |
U |
eSMR |
| 1147858 |
08/21/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 4.5 MPN/100 mL at EFF-001B. |
The City is continuing to investigate the potential cause(s) of the total coliform detections in the WWRC UV disinfected effluent and does not intend to discharge through Discharge Location 001B until there is confidence that it can be done without further violations. If additional testing of equipment is needed before then that necessitates discharging through the East Bank Outfall, the City will make every effort to ensure adequate disinfection occurs. |
Violation |
U |
eSMR |
| 1147857 |
08/20/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 5.7 MPN/100 mL at EFF-001B. |
The City is continuing to investigate the potential cause(s) of the total coliform detections in the WWRC UV-disinfected effluent and does not intend to discharge through Discharge Location 001B until there is confidence that it can be done without further violations. If additional testing of equipment is needed before then, the City will make every effort to ensure adequate disinfection occurs if it necessitates discharging through the East Bank Outfall. |
Violation |
U |
eSMR |
| 1146526 |
07/22/2025 |
Order Conditions |
Pond 3 pH was above 9.0 SU for three consecutive weeks (7/15, 7/22, 7/29). Since the WDRs allow an excursion not exceeding 1 week, the pH limitation was violated on 7/22 and 7/29. |
The City performed more frequent effluent diversions to the ponds as part of ongoing testing of the UV disinfection system, which likely increased algal growth within the ponds. The City has worked to return the ponds to normal operational levels, and pond monitoring in August 2025 indicates that Pond 3 pH has returned to the allowable 6-9 SU range. |
Violation |
B |
eSMR |
| 1145388 |
06/30/2025 |
CAT1 |
Ammonia, Total (as N) Monthly Average limit is 1.2 mg/L and reported value was 2.4 mg/L at EFF-001B. |
The City is investigating potential solutions to prevent this from occurring again . |
Violation |
B |
eSMR |
| 1145384 |
06/28/2025 |
CAT1 |
Ammonia, Total (as N) Weekly Average limit is 3.2 mg/L and reported value was 6.5 mg/L at EFF-001B. |
The City is investigating potential solutions to prevent this from occurring again . |
Violation |
B |
eSMR |
| 1145392 |
06/27/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 3.2 MPN/100 mL at EFF-001B. |
In an effort to prevent violations, the following actions were taken:
¿ The UV channels were cleaned thoroughly prior to initiating discharge.
¿ The UV disinfection system was operating with all channels and banks online at 100% power for the majority of the month (with exceptions for maintenance and other operational needs). The intent was to transition the power setting to auto mode as soon as possible, which did not occur within June. However, running at 100% power still allowed the City to evaluate how the UV dose calculated by the system responded to flow measurements from the new flow meter, which was valuable for startup and testing of the UV system modifications. Running at 100% power was done to provide the maximum amount of disinfection possible.
¿ Diversions occurred when the UV transmittance (UVT) dropped below the Permit operating specification requirement of 55%. |
Violation |
B |
eSMR |
| 1145387 |
06/26/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 4.9 MPN/100 mL at EFF-001B. |
In an effort to prevent violations, the following actions were taken:
¿ The UV channels were cleaned thoroughly prior to initiating discharge.
¿ The UV disinfection system was operating with all channels and banks online at 100% power for the majority of the month (with exceptions for maintenance and other operational needs). The intent was to transition the power setting to auto mode as soon as possible, which did not occur within June. However, running at 100% power still allowed the City to evaluate how the UV dose calculated by the system responded to flow measurements from the new flow meter, which was valuable for startup and testing of the UV system modifications. Running at 100% power was done to provide the maximum amount of disinfection possible.
¿ Diversions occurred when the UV transmittance (UVT) dropped below the Permit operating specification requirement of 55%.
|
Violation |
B |
eSMR |
| 1145386 |
06/24/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 10.4 MPN/100 mL at EFF-001B. |
In an effort to prevent violations, the following actions were taken:
¿ The UV channels were cleaned thoroughly prior to initiating discharge.
¿ The UV disinfection system was operating with all channels and banks online at 100% power for the majority of the month (with exceptions for maintenance and other operational needs). The intent was to transition the power setting to auto mode as soon as possible, which did not occur within June. However, running at 100% power still allowed the City to evaluate how the UV dose calculated by the system responded to flow measurements from the new flow meter, which was valuable for startup and testing of the UV system modifications. Running at 100% power was done to provide the maximum amount of disinfection possible.
¿ Diversions occurred when the UV transmittance (UVT) dropped below the Permit operating specification requirement of 55%.
|
Violation |
B |
eSMR |
| 1145385 |
06/23/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 20 MPN/100 mL at EFF-001B. |
In an effort to prevent violations, the following actions were taken:
¿ The UV channels were cleaned thoroughly prior to initiating discharge.
¿ The UV disinfection system was operating with all channels and banks online at 100% power for the majority of the month (with exceptions for maintenance and other operational needs). The intent was to transition the power setting to auto mode as soon as possible, which did not occur within June. However, running at 100% power still allowed the City to evaluate how the UV dose calculated by the system responded to flow measurements from the new flow meter, which was valuable for startup and testing of the UV system modifications. Running at 100% power was done to provide the maximum amount of disinfection possible.
¿ Diversions occurred when the UV transmittance (UVT) dropped below the Permit operating specification requirement of 55%.
|
Violation |
B |
eSMR |
| 1145383 |
06/20/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 20 MPN/100 mL at EFF-001B. |
In an effort to prevent violations, the following actions were taken:
¿ The UV channels were cleaned thoroughly prior to initiating discharge.
¿ The UV disinfection system was operating with all channels and banks online at 100% power for the majority of the month (with exceptions for maintenance and other operational needs). The intent was to transition the power setting to auto mode as soon as possible, which did not occur within June. However, running at 100% power still allowed the City to evaluate how the UV dose calculated by the system responded to flow measurements from the new flow meter, which was valuable for startup and testing of the UV system modifications. Running at 100% power was done to provide the maximum amount of disinfection possible.
¿ Diversions occurred when the UV transmittance (UVT) dropped below the Permit operating specification requirement of 55%.
|
Violation |
B |
eSMR |
| 1145381 |
06/18/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 25 MPN/100 mL at EFF-001B. |
In an effort to prevent violations, the following actions were taken:
¿ The UV channels were cleaned thoroughly prior to initiating discharge.
¿ The UV disinfection system was operating with all channels and banks online at 100% power for the majority of the month (with exceptions for maintenance and other operational needs). The intent was to transition the power setting to auto mode as soon as possible, which did not occur within June. However, running at 100% power still allowed the City to evaluate how the UV dose calculated by the system responded to flow measurements from the new flow meter, which was valuable for startup and testing of the UV system modifications. Running at 100% power was done to provide the maximum amount of disinfection possible.
¿ Diversions occurred when the UV transmittance (UVT) dropped below the Permit operating specification requirement of 55%.
|
Violation |
B |
eSMR |
| 1145391 |
06/18/2025 |
OEV |
Total Coliform Not to exceed a specific limit more than once within any 30-day period. limit is 23.0 MPN/100 mL and reported value was 49.0 MPN/100 mL at EFF-001B. |
In an effort to prevent violations, the following actions were taken:
¿ The UV channels were cleaned thoroughly prior to initiating discharge.
¿ The UV disinfection system was operating with all channels and banks online at 100% power for the majority of the month (with exceptions for maintenance and other operational needs). The intent was to transition the power setting to auto mode as soon as possible, which did not occur within June. However, running at 100% power still allowed the City to evaluate how the UV dose calculated by the system responded to flow measurements from the new flow meter, which was valuable for startup and testing of the UV system modifications. Running at 100% power was done to provide the maximum amount of disinfection possible.
¿ Diversions occurred when the UV transmittance (UVT) dropped below the Permit operating specification requirement of 55%.
|
Violation |
B |
eSMR |
| 1145379 |
06/17/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 18 MPN/100 mL at EFF-001B. |
In an effort to prevent violations, the following actions were taken:
¿ The UV channels were cleaned thoroughly prior to initiating discharge.
¿ The UV disinfection system was operating with all channels and banks online at 100% power for the majority of the month (with exceptions for maintenance and other operational needs). The intent was to transition the power setting to auto mode as soon as possible, which did not occur within June. However, running at 100% power still allowed the City to evaluate how the UV dose calculated by the system responded to flow measurements from the new flow meter, which was valuable for startup and testing of the UV system modifications. Running at 100% power was done to provide the maximum amount of disinfection possible.
¿ Diversions occurred when the UV transmittance (UVT) dropped below the Permit operating specification requirement of 55%.
|
Violation |
B |
eSMR |
| 1145389 |
06/16/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 12 MPN/100 mL at EFF-001B. |
In an effort to prevent violations, the following actions were taken:
¿ The UV channels were cleaned thoroughly prior to initiating discharge.
¿ The UV disinfection system was operating with all channels and banks online at 100% power for the majority of the month (with exceptions for maintenance and other operational needs). The intent was to transition the power setting to auto mode as soon as possible, which did not occur within June. However, running at 100% power still allowed the City to evaluate how the UV dose calculated by the system responded to flow measurements from the new flow meter, which was valuable for startup and testing of the UV system modifications. Running at 100% power was done to provide the maximum amount of disinfection possible.
¿ Diversions occurred when the UV transmittance (UVT) dropped below the Permit operating specification requirement of 55%.
|
Violation |
B |
eSMR |
| 1145378 |
06/13/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 17.0 MPN/100 mL at EFF-001B. |
In an effort to prevent violations, the following actions were taken:
¿ The UV channels were cleaned thoroughly prior to initiating discharge.
¿ The UV disinfection system was operating with all channels and banks online at 100% power for the majority of the month (with exceptions for maintenance and other operational needs). The intent was to transition the power setting to auto mode as soon as possible, which did not occur within June. However, running at 100% power still allowed the City to evaluate how the UV dose calculated by the system responded to flow measurements from the new flow meter, which was valuable for startup and testing of the UV system modifications. Running at 100% power was done to provide the maximum amount of disinfection possible.
¿ Diversions occurred when the UV transmittance (UVT) dropped below the Permit operating specification requirement of 55%.
|
Violation |
B |
eSMR |
| 1145380 |
06/11/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 12 MPN/100 mL at EFF-001B. |
In an effort to prevent violations, the following actions were taken:
¿ The UV channels were cleaned thoroughly prior to initiating discharge.
¿ The UV disinfection system was operating with all channels and banks online at 100% power for the majority of the month (with exceptions for maintenance and other operational needs). The intent was to transition the power setting to auto mode as soon as possible, which did not occur within June. However, running at 100% power still allowed the City to evaluate how the UV dose calculated by the system responded to flow measurements from the new flow meter, which was valuable for startup and testing of the UV system modifications. Running at 100% power was done to provide the maximum amount of disinfection possible.
¿ Diversions occurred when the UV transmittance (UVT) dropped below the Permit operating specification requirement of 55%.
|
Violation |
B |
eSMR |
| 1145390 |
06/10/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 12 MPN/100 mL at EFF-001B. |
In an effort to prevent violations, the following actions were taken:
¿ The UV channels were cleaned thoroughly prior to initiating discharge.
¿ The UV disinfection system was operating with all channels and banks online at 100% power for the majority of the month (with exceptions for maintenance and other operational needs). The intent was to transition the power setting to auto mode as soon as possible, which did not occur within June. However, running at 100% power still allowed the City to evaluate how the UV dose calculated by the system responded to flow measurements from the new flow meter, which was valuable for startup and testing of the UV system modifications. Running at 100% power was done to provide the maximum amount of disinfection possible.
¿ Diversions occurred when the UV transmittance (UVT) dropped below the Permit operating specification requirement of 55%.
|
Violation |
B |
eSMR |
| 1144345 |
05/15/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 4.5 MPN/100 mL at EFF-001B. |
The City is actively investigating the cause of these violations, including review/investigation of sampling and analysis procedures and UV system performance and hopes to identify and resolve the cause of the total coliform violations soon. |
Violation |
B |
eSMR |
| 1144347 |
05/14/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 4.5 MPN/100 mL at EFF-001B. |
The City is actively investigating the cause of these violations, including review/investigation of sampling and analysis procedures and UV system performance and hopes to identify and resolve the cause of the total coliform violations soon. |
Violation |
B |
eSMR |
| 1144346 |
05/12/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 4.5 MPN/100 mL at EFF-001B. |
The City is actively investigating the cause of these violations, including review/investigation of sampling and analysis procedures and UV system performance and hopes to identify and resolve the cause of the total coliform violations soon. |
Violation |
B |
eSMR |
| 1144349 |
05/08/2025 |
OEV |
pH Instantaneous Minimum limit is 6.5 SU and reported value was 6.4 SU at EFF-001B. *** MMP Exempt Reason:Second violation of an instantaneous minimum limitation in the same day. |
The City reviewed the effluent pH diversion control setpoints to ensure they are properly set and plans to perform testing of these controls as soon as practicable to ensure they are working properly. |
Violation |
B |
eSMR |
| 1144350 |
05/07/2025 |
OEV |
pH Instantaneous Minimum limit is 6.5 SU and reported value was 6.4 SU at EFF-001A. *** MMP Exempt Reason:Second violation of instantaneous limitation on the same day. |
The City reviewed the effluent pH diversion control setpoints to ensure they are properly set and plans to perform testing of these controls as soon as practicable to ensure they are working properly. |
Violation |
B |
eSMR |
| 1144348 |
05/07/2025 |
OEV |
pH Instantaneous Minimum limit is 6.5 SU and reported value was 6.4 SU at EFF-001B. |
The City reviewed the effluent pH diversion control setpoints to ensure they are properly set and plans to perform testing of these controls as soon as practicable to ensure they are working properly. |
Violation |
B |
eSMR |
| 1143111 |
03/31/2025 |
Deficient Reporting |
Discharger did not report effluent mercury result for Q1 2025 as required in the MRP. |
|
Violation |
B |
Report |
| 1142654 |
03/31/2025 |
CAT1 |
Nitrite Plus Nitrate (as N) Monthly Average limit is 10 mg/L and reported value was 12 mg/L at EFF-001A. |
The City returned the aeration Basins and nitrification/ denitrification to acceptable performance as evidenced by the nitrate plus nitrite results at the end of march 2025 being 10mg/L or less |
Violation |
B |
eSMR |
| 1142655 |
03/22/2025 |
CAT1 |
Nitrite Plus Nitrate (as N) Weekly Average limit is 14 mg/L and reported value was 16 mg/L at EFF-001A. |
The City returned the aeration Basins and nitrification/ denitrification to acceptable performance as evidenced by the nitrate plus nitrite results at the end of march 2025 being 10mg/L or less |
Violation |
B |
eSMR |
| 1143110 |
03/21/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 3.9 MPN/100 mL at EFF-001A. |
|
Violation |
B |
Report |
| 1141712 |
02/24/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 7.5 MPN/100 mL at EFF-001A. |
To mitigate any Total Coliform exceedances caused by biological growth in the chlorine contact channel and associated sampling equipment, the City has implemented a routine maintenance program that involves chlorination (with free chlorine, not chloramines) of the chlorine contact channel and total coliform sampling equipment. The RWCF will not discharge to the San Joaquin River during these maintenance periods. |
Violation |
B |
eSMR |
| 1141716 |
02/21/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 13 MPN/100 mL at EFF-001A. |
To mitigate any Total Coliform exceedances caused by biological growth in the chlorine contact channel and associated sampling equipment, the City has implemented a routine maintenance program that involves chlorination (with free chlorine, not chloramines) of the chlorine contact channel and total coliform sampling equipment. The RWCF will not discharge to the San Joaquin River during these maintenance periods. |
Violation |
B |
eSMR |
| 1141715 |
02/20/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 13.0 MPN/100 mL at EFF-001A. |
To mitigate any Total Coliform exceedances caused by biological growth in the chlorine contact channel and associated sampling equipment, the City has implemented a routine maintenance program that involves chlorination (with free chlorine, not chloramines) of the chlorine contact channel and total coliform sampling equipment. The RWCF will not discharge to the San Joaquin River during these maintenance periods. |
Violation |
B |
eSMR |
| 1141714 |
02/18/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 13.0 MPN/100 mL at EFF-001A. |
. To mitigate any Total Coliform exceedances caused by biological growth in the chlorine contact channel and associated sampling equipment, the City has implemented a routine maintenance program that involves chlorination (with free chlorine, not chloramines) of the chlorine contact channel and total coliform sampling equipment. The RWCF will not discharge to the San Joaquin River during these maintenance periods. |
Violation |
B |
eSMR |
| 1141713 |
02/17/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 13 MPN/100 mL at EFF-001A. |
. To mitigate any Total Coliform exceedances caused by biological growth in the chlorine contact channel and associated sampling equipment, the City has implemented a routine maintenance program that involves chlorination (with free chlorine, not chloramines) of the chlorine contact channel and total coliform sampling equipment. The RWCF will not discharge to the San Joaquin River during these maintenance periods. |
Violation |
B |
eSMR |
| 1141708 |
02/14/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 13 MPN/100 mL at EFF-001A. |
To mitigate any Total Coliform exceedances caused by biological growth in the chlorine contact channel and associated sampling equipment, the City has implemented a routine maintenance program that involves chlorination (with free chlorine, not chloramines) of the chlorine contact channel and total coliform sampling equipment. The RWCF will not discharge to the San Joaquin River during these maintenance periods. |
Violation |
B |
eSMR |
| 1141707 |
02/12/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 13 MPN/100 mL at EFF-001A. |
To mitigate any Total Coliform exceedances caused by biological growth in the chlorine contact channel and associated sampling equipment, the City has implemented a routine maintenance program that involves chlorination (with free chlorine, not chloramines) of the chlorine contact channel and total coliform sampling equipment. The RWCF will not discharge to the San Joaquin River during these maintenance periods. |
Violation |
B |
eSMR |
| 1141706 |
02/11/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 8.7 MPN/100 mL at EFF-001A. |
To mitigate any Total Coliform exceedances caused by biological growth in the chlorine contact channel and associated sampling equipment, the City has implemented a routine maintenance program that involves chlorination (with free chlorine, not chloramines) of the chlorine contact channel and total coliform sampling equipment. The RWCF will not discharge to the San Joaquin River during these maintenance periods. |
Violation |
B |
eSMR |
| 1141710 |
02/10/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 4.5 MPN/100 mL at EFF-001A. |
To mitigate any Total Coliform exceedances caused by biological growth in the chlorine contact channel and associated sampling equipment, the City has implemented a routine maintenance program that involves chlorination (with free chlorine, not chloramines) of the chlorine contact channel and total coliform sampling equipment. The RWCF will not discharge to the San Joaquin River during these maintenance periods. |
Violation |
B |
eSMR |
| 1141709 |
02/06/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 4.5 MPN/100 mL at EFF-001A. |
To mitigate any Total Coliform exceedances caused by biological growth in the chlorine contact channel and associated sampling equipment, the City has implemented a routine maintenance program that involves chlorination (with free chlorine, not chloramines) of the chlorine contact channel and total coliform sampling equipment. The RWCF will not discharge to the San Joaquin River during these maintenance periods. |
Violation |
B |
eSMR |
| 1141711 |
02/05/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 4.5 MPN/100 mL at EFF-001A. |
To mitigate any Total Coliform exceedances caused by biological growth in the chlorine contact channel and associated sampling equipment, the City has implemented a routine maintenance program that involves chlorination (with free chlorine, not chloramines) of the chlorine contact channel and total coliform sampling equipment. The RWCF will not discharge to the San Joaquin River during these maintenance periods. |
Violation |
B |
eSMR |
| 1140624 |
01/13/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 4.5 MPN/100 mL at EFF-001A. |
To mitigate any Total Coliform exceedances caused by biological growth in the chlorine contact channel and associated sampling equipment, the City has implemented a routine maintenance program that involves chlorination (with free chlorine, not chloramines) of the chlorine contact channel and total coliform sampling equipment. The RWCF will not discharge to the San Joaquin River during these maintenance periods. |
Violation |
B |
eSMR |
| 1140623 |
01/10/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 4.5 MPN/100 mL at EFF-001A. |
To mitigate any Total Coliform exceedances caused by biological growth in the chlorine contact channel and associated sampling equipment, the City has implemented a routine maintenance program that involves chlorination (with free chlorine, not chloramines) of the chlorine contact channel and total coliform sampling equipment. The RWCF will not discharge to the San Joaquin River during these maintenance periods. |
Violation |
B |
eSMR |
| 1140622 |
01/08/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 4.5 MPN/100 mL at EFF-001A. |
To mitigate any Total Coliform exceedances caused by biological growth in the chlorine contact channel and associated sampling equipment, the City has implemented a routine maintenance program that involves chlorination (with free chlorine, not chloramines) of the chlorine contact channel and total coliform sampling equipment. The RWCF will not discharge to the San Joaquin River during these maintenance periods. |
Violation |
B |
eSMR |
| 1140621 |
01/07/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 7.8 MPN/100 mL at EFF-001A. |
To mitigate any Total Coliform exceedances caused by biological growth in the chlorine contact channel and associated sampling equipment, the City has implemented a routine maintenance program that involves chlorination (with free chlorine, not chloramines) of the chlorine contact channel and total coliform sampling equipment. The RWCF will not discharge to the San Joaquin River during these maintenance periods. |
Violation |
B |
eSMR |
| 1140619 |
01/03/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 13 MPN/100 mL at EFF-001A. |
To mitigate any Total Coliform exceedances caused by biological growth in the chlorine contact channel and associated sampling equipment, the City has implemented a routine maintenance program that involves chlorination (with free chlorine, not chloramines) of the chlorine contact channel and total coliform sampling equipment. The RWCF will not discharge to the San Joaquin River during these maintenance periods. |
Violation |
B |
eSMR |
| 1140620 |
01/01/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 13 MPN/100 mL at EFF-001A. |
To mitigate any Total Coliform exceedances caused by biological growth in the chlorine contact channel and associated sampling equipment, the City has implemented a routine maintenance program that involves chlorination (with free chlorine, not chloramines) of the chlorine contact channel and total coliform sampling equipment. The RWCF will not discharge to the San Joaquin River during these maintenance periods. |
Violation |
B |
eSMR |
| 1139632 |
12/31/2024 |
DMON |
Discharger did monitor all constituents at the required frequency. Discharger did not monitor EC or nitrate at PND-123C twice during 2024 as required. |
To correct this issue, laboratory staff are reviewing the permit monitoring requirements to ensure this oversight does not recur. |
Violation |
B |
eSMR |
| 1139556 |
12/31/2024 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 7.5 MPN/100 mL at EFF-001A. |
To mitigate any Total Coliform exceedances caused by biological growth in the chlorine contact channel and associated sampling equipment, the City is working to implement a routine maintenance program that involves chlorination (with free chlorine, not chloramines) of the chlorine contact channel and total coliform sampling equipment. The RWCF will not discharge to the San Joaquin River during these maintenance periods. The City expects to have this routine maintenance program fully implemented in January 2025. |
Violation |
B |
eSMR |
| 1139553 |
12/30/2024 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 7.5 MPN/100 mL at EFF-001A. |
To mitigate any Total Coliform exceedances caused by biological growth in the chlorine contact channel and associated sampling equipment, the City is working to implement a routine maintenance program that involves chlorination (with free chlorine, not chloramines) of the chlorine contact channel and total coliform sampling equipment. The RWCF will not discharge to the San Joaquin River during these maintenance periods. The City expects to have this routine maintenance program fully implemented in January 2025. |
Violation |
B |
eSMR |
| 1139552 |
12/23/2024 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 3.2 MPN/100 mL at EFF-001A. |
To mitigate any Total Coliform exceedances caused by biological growth in the chlorine contact channel and associated sampling equipment, the City is working to implement a routine maintenance program that involves chlorination (with free chlorine, not chloramines) of the chlorine contact channel and total coliform sampling equipment. The RWCF will not discharge to the San Joaquin River during these maintenance periods. The City expects to have this routine maintenance program fully implemented in January 2025. |
Violation |
B |
eSMR |
| 1139551 |
12/20/2024 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 8.7 MPN/100 mL at EFF-001A. |
To mitigate any Total Coliform exceedances caused by biological growth in the chlorine contact channel and associated sampling equipment, the City is working to implement a routine maintenance program that involves chlorination (with free chlorine, not chloramines) of the chlorine contact channel and total coliform sampling equipment. The RWCF will not discharge to the San Joaquin River during these maintenance periods. The City expects to have this routine maintenance program fully implemented in January 2025. |
Violation |
B |
eSMR |
| 1139550 |
12/18/2024 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 13 MPN/100 mL at EFF-001A. |
To mitigate any Total Coliform exceedances caused by biological growth in the chlorine contact channel and associated sampling equipment, the City is working to implement a routine maintenance program that involves chlorination (with free chlorine, not chloramines) of the chlorine contact channel and total coliform sampling equipment. The RWCF will not discharge to the San Joaquin River during these maintenance periods. The City expects to have this routine maintenance program fully implemented in January 2025. |
Violation |
B |
eSMR |
| 1139555 |
12/17/2024 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 4.5 MPN/100 mL at EFF-001A. |
To mitigate any Total Coliform exceedances caused by biological growth in the chlorine contact channel and associated sampling equipment, the City is working to implement a routine maintenance program that involves chlorination (with free chlorine, not chloramines) of the chlorine contact channel and total coliform sampling equipment. The RWCF will not discharge to the San Joaquin River during these maintenance periods. The City expects to have this routine maintenance program fully implemented in January 2025. |
Violation |
B |
eSMR |
| 1139554 |
12/05/2024 |
DMON |
Discharger did not conduct all monitoring and reporting at the required frequency. Discharger did not monitor and/or report influent EC 1/month during December or effluent EC 1/week during the week ending on 12/7. |
The City is following internal correction protocols to ensure this measurement is made within hold time in the future |
Violation |
B |
eSMR |
| 1138555 |
11/01/2024 |
DMON |
Influent pH was not recorded in SCADA from November 1-3, 2024 due to ongoing SCADA system upgrades associated with the RWCF Modifications Project. This issue began on October 31, 2024 and was documented in the October 2024 SMR. |
This issue was resolved on November 3, 2024, once the work was finished that caused the influent pH data to not record in SCADA. . |
Violation |
B |
eSMR |
| 1136551 |
10/31/2024 |
DMON |
Influent pH data stopped historizing in SCADA on 10/31/24 due to ongoing SCADA system upgrades associated with the RWCF Modifications Project. |
Issue was resolved on 11/4/24. |
Violation |
B |
eSMR |
| 1132957 |
08/27/2024 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 24 MPN/100 mL at EFF-001A. |
To prevent additional violations from occurring, the RWCF transitioned to operation of the tertiary treatment facility on the west side of the San Joaquin River, including disinfection via chloramination and discharge through the west bank outfall (discharge location 001A). |
Violation |
B |
eSMR |
| 1132956 |
08/26/2024 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 824 MPN/100 mL at EFF-001A. |
To prevent additional violations from occurring, the RWCF transitioned to operation of the tertiary treatment facility on the west side of the San Joaquin River, including disinfection via chloramination and discharge through the west bank outfall (discharge location 001A). |
Violation |
B |
eSMR |
| 1132951 |
08/22/2024 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 350 MPN/100 mL at EFF-001B. |
To prevent additional violations from occurring, the RWCF transitioned to operation of the tertiary treatment facility on the west side of the San Joaquin River, including disinfection via chloramination and discharge through the west bank outfall (discharge location 001A). |
Violation |
B |
eSMR |
| 1132950 |
08/22/2024 |
OEV |
Total Coliform Not to exceed a specific limit more than once within any 30-day period. limit is 23.0 MPN/100 mL and reported value was 49.0 MPN/100 mL at EFF-001B. |
To prevent additional violations from occurring, the RWCF transitioned to operation of the tertiary treatment facility on the west side of the San Joaquin River, including disinfection via chloramination and discharge through the west bank outfall (discharge location 001A). |
Violation |
B |
eSMR |
| 1132955 |
08/21/2024 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 350 MPN/100 mL at EFF-001B. |
To prevent additional violations from occurring, the RWCF transitioned to operation of the tertiary treatment facility on the west side of the San Joaquin River, including disinfection via chloramination and discharge through the west bank outfall (discharge location 001A). |
Violation |
B |
eSMR |
| 1132949 |
08/21/2024 |
OEV |
Total Coliform Not to exceed a specific limit more than once within any 30-day period. limit is 23 MPN/100 mL and reported value was 1600 MPN/100 mL at EFF-001B. |
To prevent additional violations from occurring, the RWCF transitioned to operation of the tertiary treatment facility on the west side of the San Joaquin River, including disinfection via chloramination and discharge through the west bank outfall (discharge location 001A). |
Violation |
B |
eSMR |
| 1132945 |
08/21/2024 |
OEV |
Total Coliform Single Sample Maximum limit is 240 MPN/100 mL and reported value was 1600 MPN/100 mL at EFF-001B. |
RWCF staff and construction contractors continue to investigate the source of coliform organisms. To prevent additional violations from occurring, the RWCF transitioned to operation of the tertiary treatment facility on the west side of the San Joaquin River, including disinfection via chloramination and discharge through the west bank outfall (discharge location 001A). |
Violation |
B |
eSMR |
| 1132959 |
08/20/2024 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 4.5 MPN/100 mL at EFF-001B. |
RWCF staff and construction contractors continue to investigate the source of coliform organisms. To prevent additional violations from occurring, the RWCF transitioned to operation of the tertiary treatment facility on the west side of the San Joaquin River, including disinfection via chloramination and discharge through the west bank outfall (discharge location 001A). |
Violation |
B |
eSMR |
| 1132948 |
08/20/2024 |
OEV |
Total Coliform Not to exceed a specific limit more than once within any 30-day period. limit is 23.0 MPN/100 mL and reported value was 1600.0 MPN/100 mL at EFF-001B. |
To prevent additional violations from occurring, the RWCF transitioned to operation of the tertiary treatment facility on the west side of the San Joaquin River, including disinfection via chloramination and discharge through the west bank outfall (discharge location 001A). |
Violation |
B |
eSMR |
| 1132952 |
08/20/2024 |
OEV |
Total Coliform Single Sample Maximum limit is 240 MPN/100 mL and reported value was 1600 MPN/100 mL at EFF-001B. |
RWCF staff and construction contractors continue to investigate the source of coliform organisms. To prevent additional violations from occurring, the RWCF transitioned to operation of the tertiary treatment facility on the west side of the San Joaquin River, including disinfection via chloramination and discharge through the west bank outfall (discharge location 001A). |
Violation |
B |
eSMR |
| 1132958 |
08/19/2024 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 4.5 MPN/100 mL at EFF-001B. |
To prevent additional violations from occurring, the RWCF transitioned to operation of the tertiary treatment facility on the west side of the San Joaquin River, including disinfection via chloramination and discharge through the west bank outfall (discharge location 001A). |
Violation |
B |
eSMR |
| 1132938 |
08/19/2024 |
OEV |
Total Coliform Not to exceed a specific limit more than once within any 30-day period. limit is 23 MPN/100 mL and reported value was 350 MPN/100 mL at EFF-001B. |
To prevent additional violations from occurring, the RWCF transitioned to operation of the tertiary treatment facility on the west side of the San Joaquin River, including disinfection via chloramination and discharge through the west bank outfall (discharge location 001A). |
Violation |
B |
eSMR |
| 1132954 |
08/19/2024 |
OEV |
Total Coliform Single Sample Maximum limit is 240 MPN/100 mL and reported value was 350 MPN/100 mL at EFF-001B. |
RWCF staff and construction contractors continue to investigate the source of coliform organisms. To prevent additional violations from occurring, the RWCF transitioned to operation of the tertiary treatment facility on the west side of the San Joaquin River, including disinfection via chloramination and discharge through the west bank outfall (discharge location 001A). |
Violation |
B |
eSMR |
| 1132947 |
08/16/2024 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 4.5 MPN/100 mL at EFF-001B. |
To prevent additional violations from occurring, the RWCF transitioned to operation of the tertiary treatment facility on the west side of the San Joaquin River, including disinfection via chloramination and discharge through the west bank outfall (discharge location 001A). |
Violation |
B |
eSMR |
| 1132943 |
08/13/2024 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 4.5 MPN/100 mL at EFF-001B. |
RWCF staff and construction contractors continue to investigate the source of coliform organisms. To prevent additional violations from occurring, the RWCF transitioned to operation of the tertiary treatment facility on the west side of the San Joaquin River, including disinfection via chloramination and discharge through the west bank outfall (discharge location 001A). |
Violation |
B |
eSMR |
| 1132942 |
08/12/2024 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 4.5 MPN/100 mL at EFF-001B. |
RWCF staff and construction contractors continue to investigate the source of coliform organisms. To prevent additional violations from occurring, the RWCF transitioned to operation of the tertiary treatment facility on the west side of the San Joaquin River, including disinfection via chloramination and discharge through the west bank outfall (discharge location 001A). |
Violation |
B |
eSMR |
| 1132939 |
08/11/2024 |
DMON |
MRP requires effluent DO monitoring 3/wk; discharger monitored:
(1) 0/wk for week ending 8/10
(2) 0/wk for week ending 8/17
(3) 1/wk for week ending 8/24
MRP requires pond DO monitoring 1/wk; discharger monitored 0/wk for week ending 8/17 |
There was some confusion with RWCF staff about sampling while discharging from EFF-001B. Ponds sampling procedures have been reviewed with RWCF staff. |
Violation |
B |
eSMR |
| 1132941 |
08/08/2024 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 4.5 MPN/100 mL at EFF-001B. |
RWCF staff and construction contractors continue to investigate the source of coliform organisms. To prevent additional violations from occurring, the RWCF transitioned to operation of the tertiary treatment facility on the west side of the San Joaquin River, including disinfection via chloramination and discharge through the west bank outfall (discharge location 001A). |
Violation |
B |
eSMR |
| 1132953 |
08/02/2024 |
OEV |
Total Coliform Single Sample Maximum limit is 240 MPN/100 mL and reported value was 1600 MPN/100 mL at EFF-001B. |
RWCF staff and construction contractors continue to investigate the source of coliform organisms. To prevent additional violations from occurring, the RWCF transitioned to operation of the tertiary treatment facility on the west side of the San Joaquin River, including disinfection via chloramination and discharge through the west bank outfall (discharge location 001A). |
Violation |
B |
eSMR |
| 1131423 |
07/31/2024 |
DMON |
(1) MRP requires ammonia monitoring 3x/week; discharger monitored 2x/week for the week ending 7/20/24. (2) MRP requires DO monitoring 3x/week; discharger monitored 2x/week for the week ending 7/20/24. (3) MRP requires DOC monitoring 1x/month; discharger monitored 0/month. |
RWCF initiated discharge to the San Joaquin River through the east bank outfall (discharge location EFF-001B). The initiation of discharge occurring mid-month caused confusion amongst RWCF staff about which sampling requirements applied and which were met/not met, resulting in these samples not being collected and tested. |
Violation |
B |
eSMR |
| 1130198 |
06/30/2024 |
DMON |
Discharger sampled effluent TDS, influent EC, and influent TDS at less than the required frequency. |
In June 2024, the RWCF's analytical laboratory was moving into the new laboratory facilities constructed as part of the RWCF Modifications Project. During the move, all samples were being sent to an outside contract laboratory. Due to the moving activities, there was some confusion about sample collection that resulted in these three samples not being collected and tested . |
Violation |
B |
eSMR |
| 1129088 |
05/15/2024 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 4.5 MPN/100 mL at EFF-001. |
RWCF operations staff increased chlorine dosing and cleaned the chlorine contact channel. Although RWCF staff were unable to pinpoint what caused the high total coliform levels, it is believed their response efforts resolved the issue because effluent total coliform organisms returned to typical levels. |
Violation |
B |
eSMR |
| 1129089 |
05/14/2024 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 13.8 MPN/100 mL at EFF-001. |
RWCF operations staff increased chlorine dosing and cleaned the chlorine contact channel. Although RWCF staff were unable to pinpoint what caused the high total coliform levels, it is believed their response efforts resolved the issue because effluent total coliform organisms returned to typical levels |
Violation |
B |
eSMR |
| 1129096 |
05/13/2024 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 23 MPN/100 mL at EFF-001. |
RWCF operations staff increased chlorine dosing and cleaned the chlorine contact channel. Although RWCF staff were unable to pinpoint what caused the high total coliform levels, it is believed their response efforts resolved the issue because effluent total coliform organisms returned to typical levels. |
Violation |
B |
eSMR |
| 1129090 |
05/10/2024 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 23 MPN/100 mL at EFF-001. |
RWCF operations staff increased chlorine dosing and cleaned the chlorine contact channel. Although RWCF staff were unable to pinpoint what caused the high total coliform levels, it is believed their response efforts resolved the issue because effluent total coliform organisms returned to typical levels |
Violation |
B |
eSMR |
| 1129094 |
05/09/2024 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 23 MPN/100 mL at EFF-001. |
RWCF operations staff increased chlorine dosing and cleaned the chlorine contact channel. Although RWCF staff were unable to pinpoint what caused the high total coliform levels, it is believed their response efforts resolved the issue because effluent total coliform organisms returned to typical levels. |
Violation |
B |
eSMR |
| 1129093 |
05/06/2024 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 23.0 MPN/100 mL at EFF-001. |
In response to the total coliform exceedances, RWCF operations staff increased chlorine dosing and cleaned the chlorine contact channel. Although RWCF staff were unable to pinpoint what caused the high total coliform levels, it is believed their response efforts resolved the issue because effluent total coliform organisms returned to typical levels. |
Violation |
B |
eSMR |
| 1129092 |
05/03/2024 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 23.0 MPN/100 mL at EFF-001. |
In response to the total coliform exceedances, RWCF operations staff increased chlorine dosing and cleaned the chlorine contact channel. Although RWCF staff were unable to pinpoint what caused the high total coliform levels, it is believed their response efforts resolved the issue because effluent total coliform organisms returned to typical levels. |
Violation |
B |
eSMR |
| 1129091 |
05/02/2024 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 18 MPN/100 mL at EFF-001. |
RWCF operations staff increased chlorine dosing and cleaned the chlorine contact channel. Although RWCF staff were unable to pinpoint what caused the high total coliform levels, it is believed their response efforts resolved the issue because effluent total coliform organisms returned to typical levels after May 13, 2024. |
Violation |
B |
eSMR |
| 1129095 |
05/01/2024 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 13 MPN/100 mL at EFF-001. |
RWCF operations staff increased chlorine dosing and cleaned the chlorine contact channel. Although RWCF staff were unable to pinpoint what caused the high total coliform levels, it is believed their response efforts resolved the issue because effluent total coliform organisms returned to typical levels after May 13, 2024. |
Violation |
B |
eSMR |
| 1128020 |
04/29/2024 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 4.5 MPN/100 mL at EFF-001A. |
RWCF staff continue to investigate the cause of the coliform exceedances, as a cause was not apparent in review of disinfection process data and the immediate response measures did not improve total coliform levels. |
Violation |
B |
eSMR |
| 1124621 |
01/31/2024 |
CAT1 |
Ammonia, Total (as N) Monthly Average (Mean) limit is 1100 lb/day and reported value was 1564 lb/day at EFF-001A. |
The RWCF worked to restore normal operation of the new aeration basins and has repaired and returned to service the damaged NBT is managing the effects of the cold weather. Based on ammonia concentrations in RWCF effluent from January 21, 2024 through January 31, 2024, it appears ammonia concentrations have returned to acceptable levels. |
Violation |
B |
eSMR |
| 1124623 |
01/31/2024 |
CAT1 |
Ammonia, Total (as N) Monthly Average limit is 2.4 mg/L and reported value was 7.8 mg/L at EFF-001. |
The RWCF worked to restore normal operation of the new aeration basins and was able to repair and return to service the damaged NBT and can mitigate the effects of the cold weather. Based on ammonia concentrations in RWCF effluent from January 21, 2024 through January 31, 2024, it appears ammonia concentrations have returned to acceptable levels. |
Violation |
B |
eSMR |
| 1124622 |
01/20/2024 |
CAT1 |
Ammonia, Total (as N) Weekly Average (Mean) limit is 7.6 mg/L and reported value was 10.9 mg/L at EFF-001. |
The RWCF worked to restore normal operation of the new aeration basins and has repaired and returned to service the damaged NBT to mitigate the effects of the cold weather. Based on ammonia concentrations in RWCF effluent from January 21, 2024 through January 31, 2024, it appears ammonia concentrations have returned to acceptable levels. |
Violation |
B |
eSMR |
| 1124619 |
01/13/2024 |
CAT1 |
Ammonia, Total (as N) Weekly Average (Mean) limit is 7.6 mg/L and reported value was 13.8 mg/L at EFF-001. |
The ammonia violations in the January 2024 reporting period were caused by the same factors that resulted in ammonia compliance challenges in the December 2023 reporting period. The RWCF worked to restore normal operation of the new aeration basins and has repaired and returned to service the damaged NBT to mitigate the effects of the cold weather. Based on ammonia concentrations in RWCF effluent from January 21, 2024 through January 31, 2024, it appears ammonia concentrations have returned to acceptable levels. |
Violation |
B |
eSMR |
| 1124620 |
01/06/2024 |
CAT1 |
Ammonia, Total (as N) Weekly Average (Mean) limit is 7.6 mg/L and reported value was 12.3 mg/L at EFF-001. |
The RWCF worked to restore normal operation of the new aeration basins and has repaired and returned to service the damaged NBT to mitigate the effects of the cold weather. Based on ammonia concentrations in RWCF effluent from January 21, 2024 through January 31, 2024, it appears ammonia concentrations have returned to acceptable levels. |
Violation |
B |
eSMR |
| 1123457 |
12/31/2023 |
CAT1 |
Ammonia, Total (as N) Monthly Average limit is 1100 lb/day and reported value was 1878 lb/day at EFF-001A. |
The RWCF is actively working to restore normal operation of the new aeration basins and repair the NBT to mitigate the effects of the cold weather to the greatest extent possible. |
Violation |
B |
eSMR |
| 1123458 |
12/31/2023 |
CAT1 |
Ammonia, Total (as N) Monthly Average limit is 2.4 mg/L and reported value was 9.4 mg/L at EFF-001A. |
The RWCF is actively working to restore normal operation of the new aeration basins and repair the NBT to mitigate the effects of the cold weather to the greatest extent possible. |
Violation |
B |
eSMR |
| 1123460 |
12/30/2023 |
CAT1 |
Ammonia, Total (as N) Weekly Average limit is 7.6 mg/L and reported value was 12.0 mg/L at EFF-001A. |
The RWCF is actively working to restore normal operation of the new aeration basins and repair the NBT to mitigate the effects of the cold weather to the greatest extent possible. |
Violation |
B |
eSMR |
| 1123459 |
12/23/2023 |
CAT1 |
Ammonia, Total (as N) Weekly Average limit is 7.6 mg/L and reported value was 10.1 mg/L at EFF-001A. |
The RWCF is actively working to restore normal operation of the new aeration basins and repair the NBT to mitigate the effects of the cold weather to the greatest extent possible. |
Violation |
B |
eSMR |
| 1123456 |
12/16/2023 |
CAT1 |
Ammonia, Total (as N) Weekly Average limit is 7.6 mg/L and reported value was 8.0 mg/L at EFF-001A. |
The RWCF is actively working to restore normal operation of the new aeration basins and repair the NBT to mitigate the effects of the cold weather to the greatest extent possible. |
Violation |
B |
eSMR |
| 1114049 |
01/21/2023 |
DMON |
Discharger did not monitor influent BOD or TSS during the week ending 1/21/2023. |
Equipment was repaired and sampling resumed the following week. |
Violation |
B |
eSMR |
| 1113636 |
12/31/2022 |
UAUTHDISC |
Approximately 1.6 MG of mixed stormwater and primary-treated wastewater discharged to Navy Drive. |
|
Violation |
B |
Report |
| 1112854 |
12/10/2022 |
DMON |
Influent flow was not reported for December 10-14, 2022. December storm caused flooding in the Headworks that caused the influent flow meter to record artificial flows that are not representative of actual influent flows. |
The influent flow meter began to record accurate flows once the floodwater in Headworks subsided. The influent flow meter did not stop recording, the data was not representative of actual flow. |
Violation |
B |
eSMR |
| 1113505 |
11/26/2022 |
DMON |
Discharger did not report nitrate or nitrite results for the week ending 11/26/2022. |
Contract lab has been informed to watch hold times, adhere to all test protocols, and to inform the City immediately if there are any issues. |
Violation |
B |
eSMR |
| 1107268 |
06/29/2022 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 13.8 MPN/100 mL at EFF-001. |
|
Violation |
B |
Report |
| 1107267 |
06/28/2022 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 11.5 MPN/100 mL at EFF-001. |
|
Violation |
B |
Report |
| 1106628 |
06/27/2022 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 11.5 MPN/100 mL at EFF-001. |
The cause for these exceedances could not be determined. Total coliform levels in the effluent decreased soon in the following days. |
Violation |
B |
eSMR |
| 1105744 |
05/31/2022 |
CAT1 |
Ammonia, Total (as N) Monthly Average (Mean) limit is 1.2 mg/L and reported value was 3.3 mg/L at EFF-001. |
Staff adjusted the chemical ordering schedule to account for delays and has increased the holding time in the ponds to improve ammonia level. |
Violation |
B |
eSMR |
| 1105746 |
05/31/2022 |
CAT1 |
Ammonia, Total (as N) Monthly Average limit is 550 lb/day and reported value was 749 lb/day at EFF-001. |
Staff adjusted chemical ordering to account for delays and has increased holding time in the ponds to improve ammonia levels. The ammonia violations will be resolved upon completion of the RWCF Modifications project in 2023. |
Violation |
B |
eSMR |
| 1105743 |
05/14/2022 |
CAT1 |
Ammonia, Total (as N) Weekly Average limit is 3.2 mg/L and reported value was 5.0 mg/L at EFF-001. |
Staff adjusted chemical ordering to account for delays and has increased holding time in ponds to improve ammonia removal. Ammonia violations will be resolved upon completion of the RWCF project in 2023. |
Violation |
B |
eSMR |
| 1105747 |
05/07/2022 |
CAT1 |
Ammonia, Total (as N) Weekly Average (Mean) limit is 1500 lb/day and reported value was 2134 lb/day at EFF-001. |
Staff has adjusted chemical ordering to account for delays and has increased the holding time in the ponds to improve ammonia removal. Ammonia violations will be resolved upon completion of the RWCF modifications project scheduled for completion in 2023. |
Violation |
B |
eSMR |
| 1105745 |
05/07/2022 |
CAT1 |
Ammonia, Total (as N) Weekly Average (Mean) limit is 3.2 mg/L and reported value was 9.0 mg/L at EFF-001. |
Staff adjusted chemical ordering to account for delays and has increased holding time in ponds to improve ammonia removal. Ammonia violations will be resolved upon completion of the RWCF project in 2023. |
Violation |
B |
eSMR |
| 1104479 |
04/30/2022 |
CAT1 |
Ammonia, Total (as N) Monthly Average limit is 1.2 mg/L and reported value was 2.2 mg/L at EFF-001. |
The RWCF is constructing new aeration basins that will improve the ammonia removal efficiency. |
Violation |
B |
eSMR |
| 1104480 |
04/16/2022 |
CAT1 |
Ammonia, Total (as N) Weekly Average limit is 3.2 mg/L and reported value was 5.4 mg/L at EFF-001. |
RWCF is constructing new aeration basins that will improve the ammonia removal efficiency |
Violation |
B |
eSMR |
| 1104481 |
04/02/2022 |
CAT1 |
Ammonia, Total (as N) Weekly Average limit is 3.2 mg/L and reported value was 4.2 mg/L at EFF-001. |
RWCF is constructing new aeration basins that will improve ammonia removal efficiency. |
Violation |
B |
eSMR |
| 1104590 |
03/31/2022 |
DMON |
Discharger did not properly preserve ammonia samples taken in March at RSW-001, RSW-002, RSW-002A, and RSW-003, invalidating the sample analysis. |
|
Violation |
B |
Report |
| 1103454 |
03/31/2022 |
CAT1 |
Ammonia, Total (as N) Monthly Average limit is 2.4 mg/L and reported value was 3.4 mg/L at EFF-001. |
RWCF is in process of constructing new aeration basins that will provide consistent ammonia removal efficiency. |
Violation |
B |
eSMR |
| 1103453 |
03/05/2022 |
Order Conditions |
Turbidity Daily Average (Mean) limit is 2 NTU and reported value was 3 NTU at EFF-001 each day during 1 - 5 March. |
RWCF continued adequate disinfection, with all effluent Total Coliform measurements being <1.8 MPN/100mL when turbidity challenges were experienced. |
Violation |
B |
eSMR |
| 1102685 |
02/28/2022 |
Order Conditions |
Turbidity Daily Average (Mean) limit is 2.0 NTU and reported value was 3 NTU at EFF-001 each day during 20 - 28 February. |
Effluent discharge was stopped once high effluent turbidity was determined. Discharge reinitiated once turbidity returned to acceptable levels. |
Violation |
B |
eSMR |
| 1099380 |
11/01/2021 |
DMON |
Influent pH was not recorded in SCADA from 11/1/21 through 11/11/21 due to extensive flooding of the RWCF headworks caused by the storm on 10/24-25/21, the signal from the influent pH meter to SCADA was lost. |
Once issue was discovered, RWCF staff began the process of restoring the connection and have since resolved the issue. |
Violation |
B |
eSMR |
| 1097372 |
10/25/2021 |
DMON |
Influent pH was not recorded from October 25 through 31st due to lost SCADA signal following extensive flooding from extreme storm flows October 24-25, 2021. |
RWCF worked to re-establish the SCADA connection as soon as it was discovered. The issue has since been resolved. |
Violation |
B |
eSMR |
| 1097015 |
08/09/2021 |
DMON |
WDRs require continuous monitoring of influent pH, but the discharger did not monitor influent pH during 1-9 August 2021. |
|
Violation |
B |
Report |
| 1097014 |
07/31/2021 |
DMON |
WDRs require continuous monitoring of influent pH, but the discharger did not monitor influent pH during 29-31 July 2021. |
|
Violation |
B |
Report |
| 1106106 |
07/17/2021 |
Deficient Reporting |
Discharger reported CBOD at EFF-001 twice during the week ending 7/17/21, instead of three times as required in the MRP. |
|
Violation |
B |
Report |
| 1092902 |
05/23/2021 |
DMON |
Discharger did not monitor influent pH at the required frequency during 21-23 May 2021. |
|
Violation |
B |
Report |
| 1089810 |
03/27/2021 |
DMON |
Discharger did not monitor flow at INF-001 at the required frequency on March 16-17 and 26-27. Discharger did not monitor pH at INF-001 at the required frequency on March 16-17 and 26-27. |
|
Violation |
B |
Report |
| 1088190 |
02/28/2021 |
CAT1 |
Ammonia, Total (as N) Monthly Average limit is 1100 lb/day and reported value was 1444 lb/day at EFF-001. |
The city is monitoring the Ammonia-Nitrogen process control information to maintain compliance to prevent similar exceedances in the future. |
Violation |
B |
eSMR |
| 1088188 |
02/28/2021 |
CAT1 |
Ammonia, Total (as N) Monthly Average limit is 2.4 mg/L and reported value was 6.4 mg/L at EFF-001. |
The City is actively monitoring the Ammonia-Nitrogen process in order to maintain compliance with the effluent limitations and will continue to do so to prevent similar exceedances in the future. |
Violation |
B |
eSMR |
| 1088189 |
02/20/2021 |
CAT1 |
Ammonia, Total (as N) Weekly Average limit is 7.6 mg/L and reported value was 11.1 mg/L at EFF-001. |
The City will continue to monitor this process control information to maintain compliance with the effluent limitations and will continue to do so to prevent similar exceedances. |
Violation |
B |
eSMR |
| 1086708 |
01/31/2021 |
CAT1 |
Ammonia, Total (as N) Monthly Average limit is 1100 lb/day and reported value was 1323 lb/day at EFF-001. |
City will continue to monitor and implement the RWCF Modifications Project to provide new Aeration Basins with complete nitrication and denitrification. |
Violation |
B |
eSMR |
| 1086709 |
01/31/2021 |
CAT1 |
Ammonia, Total (as N) Monthly Average limit is 2.4 mg/L and reported value was 7.0 mg/L at EFF-001. |
The City will continue to monitor the Ammonia-Nitrogen process control information to maintain compliance with effluent limitations. |
Violation |
B |
eSMR |
| 1086710 |
01/30/2021 |
CAT1 |
Ammonia, Total (as N) Weekly Average limit is 7.6 mg/L and reported value was 12.7 mg/L at EFF-001. |
Exceedance occurred due to the colder weather in January of 2021. City is actively monitoring to comply with limitations and will continue to prevent similar exceedance in the future. |
Violation |
B |
eSMR |
|
Report displays most recent five years of violations. Refer to the Interactive Violation Report for more data.
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