| Violation ID |
Occurred Date |
Violation Type |
(-) Violation Description |
Corrective Action |
Status |
Classification |
Source |
| 1123411 |
12/31/2023 |
CAT1 |
BOD5 @ 20 Deg. C, Percent Removal Percent Reduction limit is 85 % and reported value was 80 % at EFF-002. |
As the cause of the disruption in December appears to be exclusively linked to the final construction and connection activities of new equipment to existing infrastructure, we do not anticipate these to be recurring events. As of January 29, 2024, the plant been in full compliance with the NPDES permit since the end of December and the conclusion of these construction activities. |
Violation |
U |
eSMR |
| 1123413 |
12/31/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average limit is 30 mg/L and reported value was 55.32 mg/L at EFF-002. |
As the cause of the disruption in December appears to be exclusively linked to the final construction and connection activities of new equipment to existing infrastructure, we do not anticipate these to be recurring events. As of January 29, 2024, the plant been in full compliance with the NPDES permit since the end of December and the conclusion of these construction activities. |
Violation |
U |
eSMR |
| 1123414 |
12/31/2023 |
CAT1 |
Total Suspended Solids (TSS) Monthly Average limit is 30 mg/L and reported value was 39.5 mg/L at EFF-002. |
As the cause of the disruption in December appears to be exclusively linked to the final construction and connection activities of new equipment to existing infrastructure, we do not anticipate these to be recurring events. As of January 29, 2024, the plant been in full compliance with the NPDES permit since the end of December and the conclusion of these construction activities. |
Violation |
U |
eSMR |
| 1123408 |
12/31/2023 |
CAT1 |
Total Suspended Solids (TSS), Percent Removal Percent Reduction limit is 85 % and reported value was 84 % at EFF-002. |
As the cause of the disruption in December appears to be exclusively linked to the final construction and connection activities of new equipment to existing infrastructure, we do not anticipate these to be recurring events. As of January 29, 2024, the plant been in full compliance with the NPDES permit since the end of December and the conclusion of these construction activities. |
Violation |
U |
eSMR |
| 1123412 |
12/23/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average limit is 45 mg/L and reported value was 67.5 mg/L at EFF-002. |
As the cause of the disruption in December appears to be exclusively linked to the final construction and connection activities of new equipment to existing infrastructure, we do not anticipate these to be recurring events. As of January 29, 2024, the plant been in full compliance with the NPDES permit since the end of December and the conclusion of these construction activities. |
Violation |
U |
eSMR |
| 1123409 |
12/23/2023 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 67.51 mg/L at EFF-002. |
As the cause of the disruption in December appears to be exclusively linked to the final construction and connection activities of new equipment to existing infrastructure, we do not anticipate these to be recurring events. As of January 29, 2024, the plant been in full compliance with the NPDES permit since the end of December and the conclusion of these construction activities. |
Violation |
U |
eSMR |
| 1123407 |
12/16/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average limit is 45 mg/L and reported value was 54.68 mg/L at EFF-002. |
As the cause of the disruption in December appears to be exclusively linked to the final construction and connection activities of new equipment to existing infrastructure, we do not anticipate these to be recurring events. As of January 29, 2024, the plant been in full compliance with the NPDES permit since the end of December and the conclusion of these construction activities.
|
Violation |
U |
eSMR |
| 1123410 |
12/09/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average limit is 45 mg/L and reported value was 72.17 mg/L at EFF-002. |
As the cause of the disruption in December appears to be exclusively linked to the final construction and connection activities of new equipment to existing infrastructure, we do not anticipate these to be recurring events. As of January 29, 2024, the plant been in full compliance with the NPDES permit since the end of December and the conclusion of these construction activities. |
Violation |
U |
eSMR |
| 1121422 |
09/30/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 45 mg/L and reported value was 47.87 mg/L at EFF-002. |
Once the first basin returned to service, the quality of effluent
improved noticeably. Accelerated monitoring was initiated on the 25th of September and continued through the end of the month, until two consecutive samples were within limits. The second basin was taken out of service, cleaned and returned to service from Oct. 2nd to Oct. 12th . |
Violation |
U |
eSMR |
| 1120943 |
08/05/2023 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 63.97 mg/L at EFF-002. |
We intend to continue to build the optimal biomass in our aerations basins with a variety of organisms more typical of activated sludge processes. |
Violation |
U |
eSMR |
| 1119671 |
07/31/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average (Mean) limit is 30 mg/L and reported value was 55.225 mg/L at EFF-002. |
We intend to continue to build the optimal biomass in our aerations basins with a variety of organisms
more typical of activated sludge processes. |
Violation |
U |
eSMR |
| 1119670 |
07/31/2023 |
CAT1 |
Total Suspended Solids (TSS) Monthly Average (Mean) limit is 30 mg/L and reported value was 47.22 mg/L at EFF-002. |
We intend to continue to build the optimal biomass in our aerations basins with a variety of organisms
more typical of activated sludge processes. |
Violation |
U |
eSMR |
| 1119669 |
07/29/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 45 mg/L and reported value was 139.33 mg/L at EFF-002. |
We intend to continue to build the optimal biomass in our aerations basins with a variety of organisms
more typical of activated sludge processes. |
Violation |
U |
eSMR |
| 1119672 |
07/29/2023 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 103.94 mg/L at EFF-002. |
We intend to continue to build the optimal biomass in our aerations basins with a variety of organisms
more typical of activated sludge processes. |
Violation |
U |
eSMR |
| 1118995 |
06/30/2023 |
CAT1 |
BOD5 @ 20 Deg. C, Percent Removal Percent Reduction limit is 85 % and reported value was 74 % at EFF-002. |
As the biomass recovered from potential external effects the system started to improve and we noticed more activity in the biology of the basins. This led to an increase in the variety and age of microorganisms, which indicated the return of a ¿normal¿ population in our basins. As the month of June progressed, the results were significant. Without the potential inhibitory effects of an outside agent, the biology began to perform as expected.
We intend to continue to build the optimal biomass in our aerations basins with a variety of organismsmore typical of activated sludge processes.
|
Violation |
U |
eSMR |
| 1119000 |
06/30/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average (Mean) limit is 30 mg/L and reported value was 89.188 mg/L at EFF-002. |
As the biomass recovered from potential external effects the system started to improve and we noticed more activity in the biology of the basins. This led to an increase in the variety and age of microorganisms, which indicated the return of a ¿normal¿ population in our basins. As the month of June progressed, the results were significant. Without the potential inhibitory effects of an outside agent, the biology began to perform as expected.
We intend to continue to build the optimal biomass in our aerations basins with a variety of organisms more typical of activated sludge processes.
|
Violation |
U |
eSMR |
| 1118993 |
06/30/2023 |
CAT1 |
Total Suspended Solids (TSS) Monthly Average (Mean) limit is 30 mg/L and reported value was 100.28 mg/L at EFF-002. |
As the biomass recovered from potential external effects the system started to improve and we noticed more activity in the biology of the basins. This led to an increase in the variety and age of microorganisms, which indicated the return of a ¿normal¿ population in our basins. As the month of June progressed, the results were significant. Without the potential inhibitory effects of an outside agent, the biology began to perform as expected.
We intend to continue to build the optimal biomass in our aerations basins with a variety of organisms more typical of activated sludge processes.
|
Violation |
U |
eSMR |
| 1118994 |
06/30/2023 |
CAT1 |
Total Suspended Solids (TSS), Percent Removal Percent Reduction limit is 85 % and reported value was 58 % at EFF-002. |
As the biomass recovered from potential external effects the system started to improve and we noticed more activity in the biology of the basins. This led to an increase in the variety and age of microorganisms, which indicated the return of a ¿normal¿ population in our basins. As the month of June progressed, the results were significant. Without the potential inhibitory effects of an outside agent, the biology began to perform as expected.
We intend to continue to build the optimal biomass in our aerations basins with a variety of organisms more typical of activated sludge processes.
|
Violation |
U |
eSMR |
| 1118999 |
06/17/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 45 mg/L and reported value was 85.07 mg/L at EFF-002. |
As the biomass recovered from potential external effects the system started to improve and we noticed more activity in the biology of the basins. This led to an increase in the variety and age of microorganisms, which indicated the return of a ¿normal¿ population in our basins. As the month of June progressed, the results were significant. Without the potential inhibitory effects of an outside agent, the biology began to perform as expected.
We intend to continue to build the optimal biomass in our aerations basins with a variety of organisms more typical of activated sludge processes.
|
Violation |
U |
eSMR |
| 1118992 |
06/17/2023 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 103.81 mg/L at EFF-002. |
As the biomass recovered from potential external effects the system started to improve and we noticed more activity in the biology of the basins. This led to an increase in the variety and age of microorganisms, which indicated the return of a ¿normal¿ population in our basins. As the month of June progressed, the results were significant. Without the potential inhibitory effects of an outside agent, the biology began to perform as expected.
We intend to continue to build the optimal biomass in our aerations basins with a variety of organisms more typical of activated sludge processes.
|
Violation |
U |
eSMR |
| 1118997 |
06/10/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 45 mg/L and reported value was 152.83 mg/L at EFF-002. |
As the biomass recovered from potential external effects the system started to improve and we noticed more activity in the biology of the basins. This led to an increase in the variety and age of microorganisms, which indicated the return of a ¿normal¿ population in our basins. As the month of June progressed, the results were significant. Without the potential inhibitory effects of an outside agent, the biology began to perform as expected.
We intend to continue to build the optimal biomass in our aerations basins with a variety of organismsmore typical of activated sludge processes.
|
Violation |
U |
eSMR |
| 1118998 |
06/10/2023 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 186.43 mg/L at EFF-002. |
As the biomass recovered from potential external effects the system started to improve and we noticed more activity in the biology of the basins. This led to an increase in the variety and age of microorganisms, which indicated the return of a ¿normal¿ population in our basins. As the month of June progressed, the results were significant. Without the potential inhibitory effects of an outside agent, the biology began to perform as expected.
We intend to continue to build the optimal biomass in our aerations basins with a variety of organisms more typical of activated sludge processes.
|
Violation |
U |
eSMR |
| 1118996 |
06/03/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 45 mg/L and reported value was 152 mg/L at EFF-002. |
As the biomass recovered from potential external effects the system started to improve and we noticed more activity in the biology of the basins. This led to an increase in the variety and age of microorganisms, which indicated the return of a ¿normal¿ population in our basins. As the month of June progressed, the results were significant. Without the potential inhibitory effects of an outside agent, the biology began to perform as expected.
We intend to continue to build the optimal biomass in our aerations basins with a variety of organismsmore typical of activated sludge processes.
|
Violation |
U |
eSMR |
| 1119001 |
06/03/2023 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 149.57 mg/L at EFF-002. |
As the biomass recovered from potential external effects the system started to improve and we noticed more activity in the biology of the basins. This led to an increase in the variety and age of microorganisms, which indicated the return of a ¿normal¿ population in our basins. As the month of June progressed, the results were significant. Without the potential inhibitory effects of an outside agent, the biology began to perform as expected.
We intend to continue to build the optimal biomass in our aerations basins with a variety of organisms more typical of activated sludge processes.
|
Violation |
U |
eSMR |
| 1118252 |
05/31/2023 |
CAT1 |
BOD5 @ 20 Deg. C, Percent Removal Percent Reduction limit is 85 % and reported value was 64 % at EFF-002. |
The plant continues to operate in a recovery mode which means that it has to allow for biology and coexisting solids mass to build up as we continue to optimize the process and allow for ongoing construction. It is anticipated that the use of a fine bubble diffuser in May, will provide more effective treatment or aid in the recovery of the biology in order to improve the overall treatment which seems to lack effective settling in the secondary clarifiers and overall dissolved organic reduction.
We are making adjustments internally to make sure that we are operating our solids balance in an optimal way in order to capture and reduce dissolved and suspended solids, and therefore hopefully simultaneously reduce BOD.
.The management/operations teams are looking into a new location for the influent sampler to aid in more accurate and consistent influent numbers
|
Violation |
U |
eSMR |
| 1118255 |
05/31/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average (Mean) limit is 30 mg/L and reported value was 113.345 mg/L at EFF-002. |
The plant continues to operate in a recovery mode which means that it has to allow for biology and coexisting solids mass to build up as we continue to optimize the process and allow for ongoing construction. It is anticipated that the use of a fine bubble diffuser in May, will provide more effective treatment or aid in the recovery of the biology in order to improve the overall treatment which seems to lack effective settling in the secondary clarifiers and overall dissolved organic reduction.
We are making adjustments internally to make sure that we are operating our solids balance in an optimal way in order to capture and reduce dissolved and suspended solids, and therefore hopefully simultaneously reduce BOD.
|
Violation |
U |
eSMR |
| 1118248 |
05/31/2023 |
CAT1 |
Total Suspended Solids (TSS) Monthly Average (Mean) limit is 30 mg/L and reported value was 71.47 mg/L at EFF-002. |
The plant continues to operate in a recovery mode which means that it has to allow for biology and coexisting solids mass to build up as we continue to optimize the process and allow for ongoing construction. It is anticipated that the use of a fine bubble diffuser in May, will provide more effective treatment or aid in the recovery of the biology in order to improve the overall treatment which seems to lack effective settling in the secondary clarifiers and overall dissolved organic reduction.
We are making adjustments internally to make sure that we are operating our solids balance in an optimal way in order to capture and reduce dissolved and suspended solids
|
Violation |
U |
eSMR |
| 1118249 |
05/31/2023 |
CAT1 |
Total Suspended Solids (TSS), Percent Removal Percent Reduction limit is 85 % and reported value was 65 % at EFF-002. |
The plant continues to operate in a recovery mode which means that it has to allow for biology and coexisting solids mass to build up as we continue to optimize the process and allow for ongoing construction. It is anticipated that the use of a fine bubble diffuser in May, will provide more effective treatment or aid in the recovery of the biology in order to improve the overall treatment which seems to lack effective settling in the secondary clarifiers and overall dissolved organic reduction.
We are making adjustments internally to make sure that we are operating our solids balance in an optimal way in order to capture and reduce dissolved and suspended solids
Operations and management staff have been looking into a new location fir the influent sampler that would hopefully be able to obtain a more consistent influent sample |
Violation |
U |
eSMR |
| 1118256 |
05/27/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 45 mg/L and reported value was 135.49 mg/L at EFF-002. |
The plant continues to operate in a recovery mode which means that it has to allow for biology and coexisting solids mass to build up as we continue to optimize the process and allow for ongoing construction. It is anticipated that the use of a fine bubble diffuser in May, will provide more effective treatment or aid in the recovery of the biology in order to improve the overall treatment which seems to lack effective settling in the secondary clarifiers and overall dissolved organic reduction.
We are making adjustments internally to make sure that we are operating our solids balance in an optimal way in order to capture and reduce dissolved and suspended solids, and therefore hopefully simultaneously reduce BOD.
|
Violation |
U |
eSMR |
| 1118254 |
05/27/2023 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 61.57 mg/L at EFF-002. |
The plant continues to operate in a recovery mode which means that it has to allow for biology and coexisting solids mass to build up as we continue to optimize the process and allow for ongoing construction. It is anticipated that the use of a fine bubble diffuser in May, will provide more effective treatment or aid in the recovery of the biology in order to improve the overall treatment which seems to lack effective settling in the secondary clarifiers and overall dissolved organic reduction.
We are making adjustments internally to make sure that we are operating our solids balance in an optimal way in order to capture and reduce dissolved and suspended solids
|
Violation |
U |
eSMR |
| 1118251 |
05/20/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 45.0 mg/L and reported value was 87 mg/L at EFF-002. |
The plant continues to operate in a recovery mode which means that it has to allow for biology and coexisting solids mass to build up as we continue to optimize the process and allow for ongoing construction. It is anticipated that the use of a fine bubble diffuser in May, will provide more effective treatment or aid in the recovery of the biology in order to improve the overall treatment which seems to lack effective settling in the secondary clarifiers and overall dissolved organic reduction.
We are making adjustments internally to make sure that we are operating our solids balance in an optimal way in order to capture and reduce dissolved and suspended solids, and therefore hopefully simultaneously reduce BOD.
|
Violation |
B |
eSMR |
| 1118250 |
05/13/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 45 mg/L and reported value was 96.29 mg/L. |
The plant continues to operate in a recovery mode which means that it has to allow for biology and coexisting solids mass to build up as we continue to optimize the process and allow for ongoing construction. It is anticipated that the use of a fine bubble diffuser in May, will provide more effective treatment or aid in the recovery of the biology in order to improve the overall treatment which seems to lack effective settling in the secondary clarifiers and overall dissolved organic reduction.
We are making adjustments internally to make sure that we are operating our solids balance in an optimal way in order to capture and reduce dissolved and suspended solids, and therefore hopefully simultaneously reduce BOD.
|
Violation |
U |
eSMR |
| 1118253 |
05/13/2023 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 91.14 mg/L at EFF-002. |
The plant continues to operate in a recovery mode which means that it has to allow for biology and coexisting solids mass to build up as we continue to optimize the process and allow for ongoing construction. It is anticipated that the use of a fine bubble diffuser in May, will provide more effective treatment or aid in the recovery of the biology in order to improve the overall treatment which seems to lack effective settling in the secondary clarifiers and overall dissolved organic reduction.
We are making adjustments internally to make sure that we are operating our solids balance in an optimal way in order to capture and reduce dissolved and suspended solids
|
Violation |
U |
eSMR |
| 1118257 |
05/06/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 45 mg/L and reported value was 117.06 mg/L at EFF-002. |
The plant continues to operate in a recovery mode which means that it has to allow for biology and coexisting solids mass to build up as we continue to optimize the process and allow for ongoing construction. It is anticipated that the use of a fine bubble diffuser in May, will provide more effective treatment or aid in the recovery of the biology in order to improve the overall treatment which seems to lack effective settling in the secondary clarifiers and overall dissolved organic reduction.
We are making adjustments internally to make sure that we are operating our solids balance in an optimal way in order to capture and reduce dissolved and suspended solids, and therefore hopefully simultaneously reduce BOD.
|
Violation |
U |
eSMR |
| 1118258 |
05/06/2023 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 55.14 mg/L at EFF-002. |
The plant continues to operate in a recovery mode which means that it has to allow for biology and coexisting solids mass to build up as we continue to optimize the process and allow for ongoing construction. It is anticipated that the use of a fine bubble diffuser in May, will provide more effective treatment or aid in the recovery of the biology in order to improve the overall treatment which seems to lack effective settling in the secondary clarifiers and overall dissolved organic reduction.
We are making adjustments internally to make sure that we are operating our solids balance in an optimal way in order to capture and reduce dissolved and suspended solids
|
Violation |
U |
eSMR |
| 1117281 |
04/30/2023 |
CAT1 |
BOD5 @ 20 Deg. C, Percent Removal Percent Reduction limit is 85 % and reported value was 51 % at EFF-002. |
B |
Violation |
U |
eSMR |
| 1117286 |
04/30/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average (Mean) limit is 30 mg/L and reported value was 126.275 mg/L at EFF-002. |
B |
Violation |
U |
eSMR |
| 1117290 |
04/30/2023 |
CAT1 |
Total Suspended Solids (TSS) Monthly Average (Mean) limit is 30 mg/L and reported value was 38.85 mg/L at EFF-002. |
B |
Violation |
U |
eSMR |
| 1117282 |
04/30/2023 |
CAT1 |
Total Suspended Solids (TSS), Percent Removal Percent Reduction limit is 85 % and reported value was 72 % at EFF-002. |
B |
Violation |
U |
eSMR |
| 1117288 |
04/29/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 45 mg/L and reported value was 134.87 mg/L at EFF-002. |
B |
Violation |
U |
eSMR |
| 1117284 |
04/22/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 45 mg/L and reported value was 194.47 mg/L. |
B |
Violation |
U |
eSMR |
| 1117287 |
04/22/2023 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 49.24 mg/L at EFF-002. |
B |
Violation |
U |
eSMR |
| 1117283 |
04/15/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 45 mg/L and reported value was 127.57 mg/L at EFF-002. |
B |
Violation |
U |
eSMR |
| 1117280 |
04/08/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 45 mg/L and reported value was 48.2 mg/L at EFF-002. |
B |
Violation |
U |
eSMR |
| 1117285 |
04/01/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 45 mg/L and reported value was 58.63 mg/L at EFF-002. |
B |
Violation |
U |
eSMR |
| 1117289 |
04/01/2023 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 58.01 mg/L at EFF-002. |
B |
Violation |
U |
eSMR |
| 1116361 |
03/31/2023 |
CAT1 |
BOD5 @ 20 Deg. C, Percent Removal Percent Reduction limit is 85 % and reported value was 72 % at EFF-002. |
We notified the Regional Board engineer of our condition and informed the Board of the steps we were
taking to determine the culprit, take samples, notified the City of Richmond IPP program and take
whatever mitigating steps we could to minimize the impact of the discharge. The effects from the toxic
pollutant have been described in previous reports, such as failures of solids to properly settle at the
clarifiers, elevated TSS numbers on both secondary and final effluent and discoloration of the basins. It
also resulted in the elimination of the number and diversity of the microorganisms in our facility and the
lasting impact of the discharge as it permeates throughout the facility via our reclaimed water system.
The previous report had pointed to Acrolein as the likely source of the toxic effects we were observing at
the plant. Subsequent sample results have confirmed that Acrolein was and is present in our system at
levels that are on average 25 ¿ 40 times above what is allowed to be discharged in the City¿s sewer
system.
We have received samples taken from the City of Richmond¿s own IPP sampling program dating as far
back as February 10
th
, 2023 where Acrolein was detected in a grab sample with concentrations of 13.7
ppm. Further samples in March 23
rd and April 4
th
returned levels of 19.1 and 14.6 mg/L respectively.
Our facility again on April 13
th
, contracted the procurement of new sludge from West County Wastewater
District in order to ¿re-seed¿ or inoculate once again our basins after the biology had been diminished or
eliminated considerably. Aeration basin number 4 received 31,250 gallons of concentrated sludge from
West County. Aeration basin number 2 received 31,250 gallons of sludge from West County. |
Violation |
U |
eSMR |
| 1116367 |
03/31/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average limit is 30 mg/L and reported value was 43.962 mg/L at EFF-002. |
We notified the Regional Board engineer of our condition and informed the Board of the steps we were
taking to determine the culprit, take samples, notified the City of Richmond IPP program and take
whatever mitigating steps we could to minimize the impact of the discharge. The effects from the toxic
pollutant have been described in previous reports, such as failures of solids to properly settle at the
clarifiers, elevated TSS numbers on both secondary and final effluent and discoloration of the basins. It
also resulted in the elimination of the number and diversity of the microorganisms in our facility and the
lasting impact of the discharge as it permeates throughout the facility via our reclaimed water system.
The previous report had pointed to Acrolein as the likely source of the toxic effects we were observing at
the plant. Subsequent sample results have confirmed that Acrolein was and is present in our system at
levels that are on average 25 ¿ 40 times above what is allowed to be discharged in the City¿s sewer
system.
We have received samples taken from the City of Richmond¿s own IPP sampling program dating as far
back as February 10
th
, 2023 where Acrolein was detected in a grab sample with concentrations of 13.7
ppm. Further samples in March 23
rd and April 4
th
returned levels of 19.1 and 14.6 mg/L respectively.
Our facility again on April 13
th
, contracted the procurement of new sludge from West County Wastewater
District in order to ¿re-seed¿ or inoculate once again our basins after the biology had been diminished or
eliminated considerably. Aeration basin number 4 received 31,250 gallons of concentrated sludge from
West County. Aeration basin number 2 received 31,250 gallons of sludge from West County. |
Violation |
U |
eSMR |
| 1116365 |
03/31/2023 |
CAT1 |
Total Suspended Solids (TSS) Monthly Average (Mean) limit is 30 mg/L and reported value was 51.69 mg/L at EFF-002. |
We notified the Regional Board engineer of our condition and informed the Board of the steps we were
taking to determine the culprit, take samples, notified the City of Richmond IPP program and take
whatever mitigating steps we could to minimize the impact of the discharge. The effects from the toxic
pollutant have been described in previous reports, such as failures of solids to properly settle at the
clarifiers, elevated TSS numbers on both secondary and final effluent and discoloration of the basins. It
also resulted in the elimination of the number and diversity of the microorganisms in our facility and the
lasting impact of the discharge as it permeates throughout the facility via our reclaimed water system.
The previous report had pointed to Acrolein as the likely source of the toxic effects we were observing at
the plant. Subsequent sample results have confirmed that Acrolein was and is present in our system at
levels that are on average 25 ¿ 40 times above what is allowed to be discharged in the City¿s sewer
system.
We have received samples taken from the City of Richmond¿s own IPP sampling program dating as far
back as February 10
th
, 2023 where Acrolein was detected in a grab sample with concentrations of 13.7
ppm. Further samples in March 23
rd and April 4
th
returned levels of 19.1 and 14.6 mg/L respectively.
Our facility again on April 13
th
, contracted the procurement of new sludge from West County Wastewater
District in order to ¿re-seed¿ or inoculate once again our basins after the biology had been diminished or
eliminated considerably. Aeration basin number 4 received 31,250 gallons of concentrated sludge from
West County. Aeration basin number 2 received 31,250 gallons of sludge from West County. |
Violation |
U |
eSMR |
| 1116360 |
03/31/2023 |
CAT1 |
Total Suspended Solids (TSS), Percent Removal Percent Reduction limit is 85 % and reported value was 78 % at EFF-002. |
We notified the Regional Board engineer of our condition and informed the Board of the steps we were
taking to determine the culprit, take samples, notified the City of Richmond IPP program and take
whatever mitigating steps we could to minimize the impact of the discharge. The effects from the toxic
pollutant have been described in previous reports, such as failures of solids to properly settle at the
clarifiers, elevated TSS numbers on both secondary and final effluent and discoloration of the basins. It
also resulted in the elimination of the number and diversity of the microorganisms in our facility and the
lasting impact of the discharge as it permeates throughout the facility via our reclaimed water system.
The previous report had pointed to Acrolein as the likely source of the toxic effects we were observing at
the plant. Subsequent sample results have confirmed that Acrolein was and is present in our system at
levels that are on average 25 ¿ 40 times above what is allowed to be discharged in the City¿s sewer
system.
We have received samples taken from the City of Richmond¿s own IPP sampling program dating as far
back as February 10
th
, 2023 where Acrolein was detected in a grab sample with concentrations of 13.7
ppm. Further samples in March 23
rd and April 4
th
returned levels of 19.1 and 14.6 mg/L respectively.
Our facility again on April 13
th
, contracted the procurement of new sludge from West County Wastewater
District in order to ¿re-seed¿ or inoculate once again our basins after the biology had been diminished or
eliminated considerably. Aeration basin number 4 received 31,250 gallons of concentrated sludge from
West County. Aeration basin number 2 received 31,250 gallons of sludge from West County. |
Violation |
U |
eSMR |
| 1116362 |
03/25/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 45 mg/L and reported value was 47.07 mg/L at EFF-002. |
We notified the Regional Board engineer of our condition and informed the Board of the steps we were
taking to determine the culprit, take samples, notified the City of Richmond IPP program and take
whatever mitigating steps we could to minimize the impact of the discharge. The effects from the toxic
pollutant have been described in previous reports, such as failures of solids to properly settle at the
clarifiers, elevated TSS numbers on both secondary and final effluent and discoloration of the basins. It
also resulted in the elimination of the number and diversity of the microorganisms in our facility and the
lasting impact of the discharge as it permeates throughout the facility via our reclaimed water system.
The previous report had pointed to Acrolein as the likely source of the toxic effects we were observing at
the plant. Subsequent sample results have confirmed that Acrolein was and is present in our system at
levels that are on average 25 ¿ 40 times above what is allowed to be discharged in the City¿s sewer
system.
We have received samples taken from the City of Richmond¿s own IPP sampling program dating as far
back as February 10
th
, 2023 where Acrolein was detected in a grab sample with concentrations of 13.7
ppm. Further samples in March 23
rd and April 4
th
returned levels of 19.1 and 14.6 mg/L respectively.
Our facility again on April 13
th
, contracted the procurement of new sludge from West County Wastewater
District in order to ¿re-seed¿ or inoculate once again our basins after the biology had been diminished or
eliminated considerably. Aeration basin number 4 received 31,250 gallons of concentrated sludge from
West County. Aeration basin number 2 received 31,250 gallons of sludge from West County. |
Violation |
U |
eSMR |
| 1116366 |
03/25/2023 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 55.7 mg/L at EFF-002. |
We notified the Regional Board engineer of our condition and informed the Board of the steps we were
taking to determine the culprit, take samples, notified the City of Richmond IPP program and take
whatever mitigating steps we could to minimize the impact of the discharge. The effects from the toxic
pollutant have been described in previous reports, such as failures of solids to properly settle at the
clarifiers, elevated TSS numbers on both secondary and final effluent and discoloration of the basins. It
also resulted in the elimination of the number and diversity of the microorganisms in our facility and the
lasting impact of the discharge as it permeates throughout the facility via our reclaimed water system.
The previous report had pointed to Acrolein as the likely source of the toxic effects we were observing at
the plant. Subsequent sample results have confirmed that Acrolein was and is present in our system at
levels that are on average 25 ¿ 40 times above what is allowed to be discharged in the City¿s sewer
system.
We have received samples taken from the City of Richmond¿s own IPP sampling program dating as far
back as February 10
th
, 2023 where Acrolein was detected in a grab sample with concentrations of 13.7
ppm. Further samples in March 23
rd and April 4
th
returned levels of 19.1 and 14.6 mg/L respectively.
Our facility again on April 13
th
, contracted the procurement of new sludge from West County Wastewater
District in order to ¿re-seed¿ or inoculate once again our basins after the biology had been diminished or
eliminated considerably. Aeration basin number 4 received 31,250 gallons of concentrated sludge from
West County. Aeration basin number 2 received 31,250 gallons of sludge from West County. |
Violation |
U |
eSMR |
| 1116363 |
03/11/2023 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 56.74 mg/L at EFF-002. |
We notified the Regional Board engineer of our condition and informed the Board of the steps we were
taking to determine the culprit, take samples, notified the City of Richmond IPP program and take
whatever mitigating steps we could to minimize the impact of the discharge. The effects from the toxic
pollutant have been described in previous reports, such as failures of solids to properly settle at the
clarifiers, elevated TSS numbers on both secondary and final effluent and discoloration of the basins. It
also resulted in the elimination of the number and diversity of the microorganisms in our facility and the
lasting impact of the discharge as it permeates throughout the facility via our reclaimed water system.
The previous report had pointed to Acrolein as the likely source of the toxic effects we were observing at
the plant. Subsequent sample results have confirmed that Acrolein was and is present in our system at
levels that are on average 25 ¿ 40 times above what is allowed to be discharged in the City¿s sewer
system.
We have received samples taken from the City of Richmond¿s own IPP sampling program dating as far
back as February 10
th
, 2023 where Acrolein was detected in a grab sample with concentrations of 13.7
ppm. Further samples in March 23
rd and April 4
th
returned levels of 19.1 and 14.6 mg/L respectively.
Our facility again on April 13
th
, contracted the procurement of new sludge from West County Wastewater
District in order to ¿re-seed¿ or inoculate once again our basins after the biology had been diminished or
eliminated considerably. Aeration basin number 4 received 31,250 gallons of concentrated sludge from
West County. Aeration basin number 2 received 31,250 gallons of sludge from West County. |
Violation |
U |
eSMR |
| 1116364 |
03/04/2023 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 47.61 mg/L at EFF-002. |
We notified the Regional Board engineer of our condition and informed the Board of the steps we were
taking to determine the culprit, take samples, notified the City of Richmond IPP program and take
whatever mitigating steps we could to minimize the impact of the discharge. The effects from the toxic
pollutant have been described in previous reports, such as failures of solids to properly settle at the
clarifiers, elevated TSS numbers on both secondary and final effluent and discoloration of the basins. It
also resulted in the elimination of the number and diversity of the microorganisms in our facility and the
lasting impact of the discharge as it permeates throughout the facility via our reclaimed water system.
The previous report had pointed to Acrolein as the likely source of the toxic effects we were observing at
the plant. Subsequent sample results have confirmed that Acrolein was and is present in our system at
levels that are on average 25 ¿ 40 times above what is allowed to be discharged in the City¿s sewer
system.
We have received samples taken from the City of Richmond¿s own IPP sampling program dating as far
back as February 10
th
, 2023 where Acrolein was detected in a grab sample with concentrations of 13.7
ppm. Further samples in March 23
rd and April 4
th
returned levels of 19.1 and 14.6 mg/L respectively.
Our facility again on April 13
th
, contracted the procurement of new sludge from West County Wastewater
District in order to ¿re-seed¿ or inoculate once again our basins after the biology had been diminished or
eliminated considerably. Aeration basin number 4 received 31,250 gallons of concentrated sludge from
West County. Aeration basin number 2 received 31,250 gallons of sludge from West County. |
Violation |
U |
eSMR |
| 1115045 |
02/28/2023 |
CAT1 |
BOD5 @ 20 Deg. C, Percent Removal Percent Reduction limit is 85 % and reported value was 78 % at EFF-002. |
The plant appears to be well underway to recovering. There is more variety of organisms and a
significant increase in the apparent age of the biology as evidenced by the appearance of organisms
typically present in a more established aeration basin. While the re-seeding of the basins may have
helped it is likely that the plant and its system needed time to ensure the compound had left the
process. There will need to be follow up with the SIUs (Significant Industrial Users) in the service area of
the plant by the City of Richmond¿s IPP program. Further sampling and enforcement of discharge limits
would help prevent similar situations due to the inability of the plant to be alerted to the next possible
discharge. |
Violation |
U |
eSMR |
| 1115037 |
02/28/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average (Mean) limit is 30 mg/L and reported value was 76.67 mg/L at EFF-002. |
The plant appears to be well underway to recovering. There is more variety of organisms and a
significant increase in the apparent age of the biology as evidenced by the appearance of organisms
typically present in a more established aeration basin. While the re-seeding of the basins may have
helped it is likely that the plant and its system needed time to ensure the compound had left the
process. There will need to be follow up with the SIUs (Significant Industrial Users) in the service area of
the plant by the City of Richmond¿s IPP program. Further sampling and enforcement of discharge limits
would help prevent similar situations due to the inability of the plant to be alerted to the next possible
discharge. |
Violation |
U |
eSMR |
| 1115041 |
02/28/2023 |
CAT1 |
Total Suspended Solids (TSS) Monthly Average (Mean) limit is 30 mg/L and reported value was 60.41 mg/L at EFF-002. |
The plant appears to be well underway to recovering. There is more variety of organisms and a
significant increase in the apparent age of the biology as evidenced by the appearance of organisms
typically present in a more established aeration basin. While the re-seeding of the basins may have
helped it is likely that the plant and its system needed time to ensure the compound had left the
process. There will need to be follow up with the SIUs (Significant Industrial Users) in the service area of
the plant by the City of Richmond¿s IPP program. Further sampling and enforcement of discharge limits
would help prevent similar situations due to the inability of the plant to be alerted to the next possible
discharge. |
Violation |
U |
eSMR |
| 1115038 |
02/28/2023 |
CAT1 |
Total Suspended Solids (TSS), Percent Removal Percent Reduction limit is 85 % and reported value was 83 % at EFF-002. |
The plant appears to be well underway to recovering. There is more variety of organisms and a
significant increase in the apparent age of the biology as evidenced by the appearance of organisms
typically present in a more established aeration basin. While the re-seeding of the basins may have
helped it is likely that the plant and its system needed time to ensure the compound had left the
process. There will need to be follow up with the SIUs (Significant Industrial Users) in the service area of
the plant by the City of Richmond¿s IPP program. Further sampling and enforcement of discharge limits
would help prevent similar situations due to the inability of the plant to be alerted to the next possible
discharge. |
Violation |
U |
eSMR |
| 1115044 |
02/25/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 45 mg/L and reported value was 70.33 mg/L at EFF-002. |
The plant appears to be well underway to recovering. There is more variety of organisms and a
significant increase in the apparent age of the biology as evidenced by the appearance of organisms
typically present in a more established aeration basin. While the re-seeding of the basins may have
helped it is likely that the plant and its system needed time to ensure the compound had left the
process. There will need to be follow up with the SIUs (Significant Industrial Users) in the service area of
the plant by the City of Richmond¿s IPP program. Further sampling and enforcement of discharge limits
would help prevent similar situations due to the inability of the plant to be alerted to the next possible
discharge. |
Violation |
U |
eSMR |
| 1115042 |
02/25/2023 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 67.24 mg/L at EFF-002. |
The plant appears to be well underway to recovering. There is more variety of organisms and a
significant increase in the apparent age of the biology as evidenced by the appearance of organisms
typically present in a more established aeration basin. While the re-seeding of the basins may have
helped it is likely that the plant and its system needed time to ensure the compound had left the
process. There will need to be follow up with the SIUs (Significant Industrial Users) in the service area of
the plant by the City of Richmond¿s IPP program. Further sampling and enforcement of discharge limits
would help prevent similar situations due to the inability of the plant to be alerted to the next possible
discharge. |
Violation |
U |
eSMR |
| 1115036 |
02/18/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 45 mg/L and reported value was 50.83 mg/L at EFF-002. |
The plant appears to be well underway to recovering. There is more variety of organisms and a
significant increase in the apparent age of the biology as evidenced by the appearance of organisms
typically present in a more established aeration basin. While the re-seeding of the basins may have
helped it is likely that the plant and its system needed time to ensure the compound had left the
process. There will need to be follow up with the SIUs (Significant Industrial Users) in the service area of
the plant by the City of Richmond¿s IPP program. Further sampling and enforcement of discharge limits
would help prevent similar situations due to the inability of the plant to be alerted to the next possible
discharge. |
Violation |
U |
eSMR |
| 1115043 |
02/18/2023 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 46.41 mg/L at EFF-002. |
The plant appears to be well underway to recovering. There is more variety of organisms and a
significant increase in the apparent age of the biology as evidenced by the appearance of organisms
typically present in a more established aeration basin. While the re-seeding of the basins may have
helped it is likely that the plant and its system needed time to ensure the compound had left the
process. There will need to be follow up with the SIUs (Significant Industrial Users) in the service area of
the plant by the City of Richmond¿s IPP program. Further sampling and enforcement of discharge limits
would help prevent similar situations due to the inability of the plant to be alerted to the next possible
discharge. |
Violation |
U |
eSMR |
| 1115035 |
02/11/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 45 mg/L and reported value was 82.67 mg/L at EFF-002. |
The plant appears to be well underway to recovering. There is more variety of organisms and a
significant increase in the apparent age of the biology as evidenced by the appearance of organisms
typically present in a more established aeration basin. While the re-seeding of the basins may have
helped it is likely that the plant and its system needed time to ensure the compound had left the
process. There will need to be follow up with the SIUs (Significant Industrial Users) in the service area of
the plant by the City of Richmond¿s IPP program. Further sampling and enforcement of discharge limits
would help prevent similar situations due to the inability of the plant to be alerted to the next possible
discharge. |
Violation |
U |
eSMR |
| 1115040 |
02/11/2023 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 57.79 mg/L at EFF-002. |
The plant appears to be well underway to recovering. There is more variety of organisms and a
significant increase in the apparent age of the biology as evidenced by the appearance of organisms
typically present in a more established aeration basin. While the re-seeding of the basins may have
helped it is likely that the plant and its system needed time to ensure the compound had left the
process. There will need to be follow up with the SIUs (Significant Industrial Users) in the service area of
the plant by the City of Richmond¿s IPP program. Further sampling and enforcement of discharge limits
would help prevent similar situations due to the inability of the plant to be alerted to the next possible
discharge. |
Violation |
U |
eSMR |
| 1115046 |
02/04/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 45 mg/L and reported value was 116.83 mg/L at EFF-002. |
The plant appears to be well underway to recovering. There is more variety of organisms and a
significant increase in the apparent age of the biology as evidenced by the appearance of organisms
typically present in a more established aeration basin. While the re-seeding of the basins may have
helped it is likely that the plant and its system needed time to ensure the compound had left the
process. There will need to be follow up with the SIUs (Significant Industrial Users) in the service area of
the plant by the City of Richmond¿s IPP program. Further sampling and enforcement of discharge limits
would help prevent similar situations due to the inability of the plant to be alerted to the next possible
discharge. |
Violation |
U |
eSMR |
| 1115039 |
02/04/2023 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 93.14 mg/L at EFF-002. |
The plant appears to be well underway to recovering. There is more variety of organisms and a
significant increase in the apparent age of the biology as evidenced by the appearance of organisms
typically present in a more established aeration basin. While the re-seeding of the basins may have
helped it is likely that the plant and its system needed time to ensure the compound had left the
process. There will need to be follow up with the SIUs (Significant Industrial Users) in the service area of
the plant by the City of Richmond¿s IPP program. Further sampling and enforcement of discharge limits
would help prevent similar situations due to the inability of the plant to be alerted to the next possible
discharge. |
Violation |
U |
eSMR |
| 1113385 |
02/02/2023 |
LREP |
Annual SMR ( MONNPDES ) report for 2022 (2205757) was due on 01-FEB-23 |
|
Violation |
B |
Report |
| 1113258 |
01/31/2023 |
LREP |
Monthly SMR ( MONNPDES ) report for December 2022 (2205609) was due on 30-JAN-23 |
|
Violation |
B |
Report |
| 1114143 |
01/31/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average (Mean) limit is 30 mg/L and reported value was 47.214 mg/L at EFF-002. |
Primary clarifier tank flights were repaired and basins cleaned. The plant re-seeded its microbial life from the West County facility. Investigation into contamination cause has ensued |
Violation |
U |
eSMR |
| 1114144 |
01/31/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Percent Reduction limit is 85 % and reported value was 66 % at EFF-002. |
Primary clarifier tank flights were repaired and basins cleaned. The plant re-seeded its microbial life from the West County facility. Investigation into contamination cause has ensued |
Violation |
U |
eSMR |
| 1114142 |
01/31/2023 |
CAT1 |
Total Suspended Solids (TSS) Monthly Average (Mean) limit is 30 mg/L and reported value was 56.76 mg/L at EFF-002. |
Primary clarifier tank flights were repaired and basins cleaned. The plant re-seeded its microbial life from the West County facility to aide in better solids retention and overall treatment through the facility |
Violation |
U |
eSMR |
| 1114145 |
01/31/2023 |
CAT1 |
Total Suspended Solids (TSS), Percent Removal Percent Reduction limit is 85 % and reported value was 69 % at EFF-002. |
Primary clarifier tank flights were repaired and basins cleaned. The plant re-seeded its microbial life from the West County facility to aide in better solids retention and overall treatment through the facility |
Violation |
U |
eSMR |
| 1114140 |
01/28/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 45 mg/L and reported value was 82 mg/L at EFF-002. |
Primary clarifier tank flights were repaired and basins cleaned. The plant re-seeded its microbial life from the West County facility. Investigation into contamination cause has ensued |
Violation |
U |
eSMR |
| 1114141 |
01/28/2023 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 60.46 mg/L at EFF-002. |
Primary clarifier tank flights were repaired and basins cleaned. The plant re-seeded its microbial life from the West County facility. Investigation into contamination cause has ensued |
Violation |
U |
eSMR |
| 1114137 |
01/21/2023 |
CAT1 |
Total Suspended Solids (TSS) 1-Hour Average (Mean) limit is 45 mg/L and reported value was 47.03 mg/L at EFF-002. |
Primary clarifier tank flights were repaired and basins cleaned. The plant re-seeded its microbial life from the West County facility to aide in better solids retention and overall treatment through the facility |
Violation |
U |
eSMR |
| 1114139 |
01/14/2023 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 51.77 mg/L at EFF-002. |
Primary clarifier tank flights were repaired and basins cleaned. The plant re-seeded its microbial life from the West County facility to aide in better solids retention and overall treatment through the facility |
Violation |
U |
eSMR |
| 1114138 |
01/07/2023 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 49.27 mg/L at EFF-002. |
Primary clarifier tank flights were repaired and basins cleaned. The plant re-seeded its microbial life from the West County facility to aide in better solids retention and overall treatment through the facility |
Violation |
U |
eSMR |
| 1112226 |
12/31/2022 |
LREP |
Monthly SMR ( MONNPDES ) report for November 2022 (2205608) was due on 30-DEC-22 |
|
Violation |
B |
Report |
| 1113329 |
12/31/2022 |
CAT1 |
BOD5 @ 20 Deg. C, Percent Removal Percent Reduction limit is 85 % and reported value was 83 % at EFF-002. |
We are and will continue to make the necessary adjustments to help continue improvements in settling in the aeration basins after the effects of the high flows. This will allow us to maintain better control of our solids and return to values within acceptable limits quickly. This should improve TSS and BOD, and allows for more effective disinfection. |
Violation |
U |
eSMR |
| 1113328 |
12/31/2022 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average (Mean) limit is 30 mg/L and reported value was 49.2 mg/L at EFF-002. |
We are and will continue to make the necessary adjustments to help continue improvements in settling in the aeration basins after the effects of the high flows. This will allow us to maintain better control of our solids and return to values within acceptable limits quickly. This should improve TSS and BOD, and allows for more effective disinfection. |
Violation |
U |
eSMR |
| 1113327 |
12/31/2022 |
CAT1 |
Total Suspended Solids (TSS) Monthly Average (Mean) limit is 30 mg/L and reported value was 73.4 mg/L at EFF-002. |
We are and will continue to make the necessary adjustments to help continue improvements in settling in the aeration basins after the effects of the high flows. This will allow us to maintain better control of our solids and return to values within acceptable limits quickly. This should improve TSS and BOD, and allows for more effective disinfection. |
Violation |
U |
eSMR |
| 1113331 |
12/31/2022 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 52.6 mg/L at EFF-002. |
We are and will continue to make the necessary adjustments to help continue improvements in settling in the aeration basins after the effects of the high flows. This will allow us to maintain better control of our solids and return to values within acceptable limits quickly. This should improve TSS and BOD, and allows for more effective disinfection. |
Violation |
U |
eSMR |
| 1113332 |
12/31/2022 |
CAT1 |
Total Suspended Solids (TSS), Percent Removal Percent Reduction limit is 85 % and reported value was 79 % at EFF-002. |
We are and will continue to make the necessary adjustments to help continue improvements in settling in the aeration basins after the effects of the high flows. This will allow us to maintain better control of our solids and return to values within acceptable limits quickly. This should improve TSS and BOD, and allows for more effective disinfection. |
Violation |
U |
eSMR |
| 1113330 |
12/17/2022 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 45 mg/L and reported value was 64.17 mg/L at EFF-002. |
We are and will continue to make the necessary adjustments to help continue improvements in settling in the aeration basins after the effects of the high flows. This will allow us to maintain better control of our solids and return to values within acceptable limits quickly. This should improve TSS and BOD, and allows for more effective disinfection. |
Violation |
U |
eSMR |
| 1113326 |
12/17/2022 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 92.2 mg/L at EFF-002. |
We are and will continue to make the necessary adjustments to help continue improvements in settling in the aeration basins after the effects of the high flows. This will allow us to maintain better control of our solids and return to values within acceptable limits quickly. This should improve TSS and BOD, and allows for more effective disinfection. |
Violation |
U |
eSMR |
| 1113333 |
12/10/2022 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 45 mg/L and reported value was 61.8 mg/L at EFF-002. |
We are and will continue to make the necessary adjustments to help continue improvements in settling in the aeration basins after the effects of the high flows. This will allow us to maintain better control of our solids and return to values within acceptable limits quickly. This should improve TSS and BOD, and allows for more effective disinfection. |
Violation |
U |
eSMR |
| 1113335 |
12/10/2022 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 96.6 mg/L at EFF-002. |
We are and will continue to make the necessary adjustments to help continue improvements in settling in the aeration basins after the effects of the high flows. This will allow us to maintain better control of our solids and return to values within acceptable limits quickly. This should improve TSS and BOD, and allows for more effective disinfection. |
Violation |
U |
eSMR |
| 1113334 |
12/03/2022 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 52.4 mg/L at EFF-002. |
We are and will continue to make the necessary adjustments to help continue improvements in settling in the aeration basins after the effects of the high flows. This will allow us to maintain better control of our solids and return to values within acceptable limits quickly. This should improve TSS and BOD, and allows for more effective disinfection. |
Violation |
U |
eSMR |
| 1112959 |
11/30/2022 |
CAT1 |
Total Suspended Solids (TSS) Monthly Average limit is 30.0 mg/L and reported value was 35.1 mg/L at EFF-002. |
We are intermittently chlorinating our RAS to aide in better solids settling and retention to avoid such severe washout in future storm events |
Violation |
U |
eSMR |
| 1112960 |
11/05/2022 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 89 mg/L at EFF-002. |
We are intermittently chlorinating our RAS to aide in better solids settling and retention to avoid such severe washout in future storm events |
Violation |
U |
eSMR |
| 1110851 |
11/04/2022 |
CAT1 |
Total Suspended Solids (TSS) Monthly Average limit is 30 mg/L and reported value was 34.4 mg/L at EFF-002. |
Continued monitoring of MLSS settling and RAS chlorination to aide in this effort. Planned maintenance on primary clarifier to clean flights and weirs |
Violation |
U |
eSMR |
| 1110850 |
11/04/2022 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average limit is 45 mg/L and reported value was 57.86 mg/L at EFF-002. |
Ras chlorination to aide in settling, removal of a significant portion of contaminated influent from primaries |
Violation |
U |
eSMR |
| 1110849 |
10/14/2022 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average limit is 45 mg/L and reported value was 56.14 mg/L at EFF-002. |
As mentioned in our previous report, staff took process control
actions throughout the period to address common causes of poor
settling of the MLSS and washout of solids from the secondary
clarifiers. Some progress has been made and changes seem to be sending the treatment of the process waters in the right direction |
Violation |
U |
eSMR |
| 1110848 |
10/07/2022 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average limit is 45 mg/L and reported value was 64.43 mg/L at EFF-002. |
steps were taken to alleviate the loading of solids to the system. They
included: drain, clean and return to service each of the Contact Tank
Basins, increase the cleaning of all weirs, adjust, and calibrate
turbidity, residual monitoring equipment and tear down and inspect
scum and sludge pumps |
Violation |
U |
eSMR |
| 1109735 |
09/30/2022 |
CAT1 |
Total Suspended Solids (TSS) Monthly Average (Mean) limit is 30 mg/L and reported value was 71.7 mg/L at EFF-002. |
Staff continued to take process control actions throughout the period to address the common causes of poor settling of the MLSS and washout of solids at the clarifier. Further aggressive steps were taken to alleviate the loading of solids through the system such as: drain, clean and return to service each of the Contact Tank Basins, increase the cleaning of all weirs, adjust and calibrate turbidity, residual monitoring equipment and tear down and inspect scum and sludge pumps, all to no apparent improvement.
At the same time, we also took proactive steps to determine whether the plant had received any toxic or inhibitory constituent that affected the biomass of our secondary treatment. Sample results have not all been completed and received in time for this report, however we have received some indication of Total Petroleum Hydrocarbons (TPH) detected at one of our lift stations, which may confirm operator's observations of noticeable "iridescent sheens" on the surface throughout our system. The laboratory analysis is included in this report. We will provide additional laboratory data as it is received and present it in our next monthly report. |
Violation |
U |
eSMR |
| 1109733 |
09/30/2022 |
CAT1 |
Total Suspended Solids (TSS), Percent Removal Percent Reduction limit is 85 % and reported value was 82 % at EFF-002. |
Staff continued to take process control actions throughout the period to address the common causes of poor settling of the MLSS and washout of solids at the clarifier. Further aggressive steps were taken to alleviate the loading of solids through the system such as: drain, clean and return to service each of the Contact Tank Basins, increase the cleaning of all weirs, adjust and calibrate turbidity, residual monitoring equipment and tear down and inspect scum and sludge pumps, all to no apparent improvement.
At the same time, we also took proactive steps to determine whether the plant had received any toxic or inhibitory constituent that affected the biomass of our secondary treatment. Sample results have not all been completed and received in time for this report, however we have received some indication of Total Petroleum Hydrocarbons (TPH) detected at one of our lift stations, which may confirm operator's observations of noticeable "iridescent sheens" on the surface throughout our system. The laboratory analysis is included in this report. We will provide additional laboratory data as it is received and present it in our next monthly report. |
Violation |
U |
eSMR |
| 1109736 |
09/24/2022 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 63.14 mg/L at EFF-002. |
Staff continued to take process control actions throughout the period to address the common causes of poor settling of the MLSS and washout of solids at the clarifier. Further aggressive steps were taken to alleviate the loading of solids through the system such as: drain, clean and return to service each of the Contact Tank Basins, increase the cleaning of all weirs, adjust and calibrate turbidity, residual monitoring equipment and tear down and inspect scum and sludge pumps, all to no apparent improvement.
At the same time, we also took proactive steps to determine whether the plant had received any toxic or inhibitory constituent that affected the biomass of our secondary treatment. Sample results have not all been completed and received in time for this report, however we have received some indication of Total Petroleum Hydrocarbons (TPH) detected at one of our lift stations, which may confirm operator's observations of noticeable "iridescent sheens" on the surface throughout our system. The laboratory analysis is included in this report. We will provide additional laboratory data as it is received and present it in our next monthly report. |
Violation |
U |
eSMR |
| 1109732 |
09/17/2022 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 84.29 mg/L at EFF-002. |
Staff continued to take process control actions throughout the period to address the common causes of poor settling of the MLSS and washout of solids at the clarifier. Further aggressive steps were taken to alleviate the loading of solids through the system such as: drain, clean and return to service each of the Contact Tank Basins, increase the cleaning of all weirs, adjust and calibrate turbidity, residual monitoring equipment and tear down and inspect scum and sludge pumps, all to no apparent improvement.
At the same time, we also took proactive steps to determine whether the plant had received any toxic or inhibitory constituent that affected the biomass of our secondary treatment. Sample results have not all been completed and received in time for this report, however we have received some indication of Total Petroleum Hydrocarbons (TPH) detected at one of our lift stations, which may confirm operator's observations of noticeable "iridescent sheens" on the surface throughout our system. The laboratory analysis is included in this report. We will provide additional laboratory data as it is received and present it in our next monthly report. |
Violation |
U |
eSMR |
| 1109734 |
09/10/2022 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 48.71 mg/L at EFF-002. |
Staff continued to take process control actions throughout the period to address the common causes of poor settling of the MLSS and washout of solids at the clarifier. Further aggressive steps were taken to alleviate the loading of solids through the system such as: drain, clean and return to service each of the Contact Tank Basins, increase the cleaning of all weirs, adjust and calibrate turbidity, residual monitoring equipment and tear down and inspect scum and sludge pumps, all to no apparent improvement.
At the same time, we also took proactive steps to determine whether the plant had received any toxic or inhibitory constituent that affected the biomass of our secondary treatment. Sample results have not all been completed and received in time for this report, however we have received some indication of Total Petroleum Hydrocarbons (TPH) detected at one of our lift stations, which may confirm operator's observations of noticeable "iridescent sheens" on the surface throughout our system. The laboratory analysis is included in this report. We will provide additional laboratory data as it is received and present it in our next monthly report. |
Violation |
U |
eSMR |
| 1109737 |
09/03/2022 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 45 mg/L and reported value was 55.25 mg/L at EFF-002. |
Staff continued to take process control actions throughout the period to address the common causes of poor settling of the MLSS and washout of solids at the clarifier. Further aggressive steps were taken to alleviate the loading of solids through the system such as: drain, clean and return to service each of the Contact Tank Basins, increase the cleaning of all weirs, adjust and calibrate turbidity, residual monitoring equipment and tear down and inspect scum and sludge pumps, all to no apparent improvement.
At the same time, we also took proactive steps to determine whether the plant had received any toxic or inhibitory constituent that affected the biomass of our secondary treatment. Sample results have not all been completed and received in time for this report, however we have received some indication of Total Petroleum Hydrocarbons (TPH) detected at one of our lift stations, which may confirm operator's observations of noticeable "iridescent sheens" on the surface throughout our system. The laboratory analysis is included in this report. We will provide additional laboratory data as it is received and present it in our next monthly report. |
Violation |
U |
eSMR |
| 1109731 |
09/03/2022 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 104.43 mg/L at EFF-002. |
Staff continued to take process control actions throughout the period to address the common causes of poor settling of the MLSS and washout of solids at the clarifier. Further aggressive steps were taken to alleviate the loading of solids through the system such as: drain, clean and return to service each of the Contact Tank Basins, increase the cleaning of all weirs, adjust and calibrate turbidity, residual monitoring equipment and tear down and inspect scum and sludge pumps, all to no apparent improvement.
At the same time, we also took proactive steps to determine whether the plant had received any toxic or inhibitory constituent that affected the biomass of our secondary treatment. Sample results have not all been completed and received in time for this report, however we have received some indication of Total Petroleum Hydrocarbons (TPH) detected at one of our lift stations, which may confirm operator's observations of noticeable "iridescent sheens" on the surface throughout our system. The laboratory analysis is included in this report. We will provide additional laboratory data as it is received and present it in our next monthly report. |
Violation |
U |
eSMR |
| 1108770 |
08/31/2022 |
OEV |
Total Coliform Daily Maximum limit is 10000 MPN/100 mL and reported value was 16000 MPN/100 mL at EFF-002. |
The immediately evident and likely cause for the non-compliance was the restarting of flows through the Secondary Treatment unit processes which resulted in the washing-out of MLSS over the Secondary Clarifier weirs and, ultimately, to EFF-002 sampling point that was reported on 8/9/2022 as being likely due to a combination of already poor-performing MLSS sludge settling characteristics (ie. SVI > 320-mL/G) and the hydraulic flow increase through the Secondary Treatment unit processes upon the restarting of flows through these unit processes was confirmed on 8/10/2022 |
Violation |
U |
eSMR |
| 1108773 |
08/31/2022 |
OEV |
Total Coliform Monthly Median limit is 240 MPN/100 mL and reported value was 920 MPN/100 mL at EFF-002. |
The immediately evident and likely cause for the non-compliance was the restarting of flows through the Secondary Treatment unit processes which resulted in the washing-out of MLSS over the Secondary Clarifier weirs and, ultimately, to EFF-002 sampling point that was reported on 8/9/2022 as being likely due to a combination of already poor-performing MLSS sludge settling characteristics (ie. SVI > 320-mL/G) and the hydraulic flow increase through the Secondary Treatment unit processes upon the restarting of flows through these unit processes was confirmed on 8/10/2022 |
Violation |
U |
eSMR |
| 1108777 |
08/31/2022 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average (Mean) limit is 30 mg/L and reported value was 50.4 mg/L at EFF-002. |
The immediately evident and likely cause for the non-compliance was the restarting of flows through the Secondary Treatment unit processes which resulted in the washing-out of MLSS over the Secondary Clarifier weirs and, ultimately, to EFF-002 sampling point that was reported on 8/9/2022 as being likely due to a combination of already poor-performing MLSS sludge settling characteristics (ie. SVI > 320-mL/G) and the hydraulic flow increase through the Secondary Treatment unit processes upon the restarting of flows through these unit processes was confirmed on 8/10/2022 |
Violation |
U |
eSMR |
| 1108781 |
08/31/2022 |
CAT1 |
Total Suspended Solids (TSS) Monthly Average (Mean) limit is 30 mg/L and reported value was 114.9 mg/L at EFF-002. |
When comparison the comparison was made for the time period of 4/1/2022 to 9/8/2022 it was evident that the recent "Red Tide" event that started in August-2022 coupled to the "King Tide" events from July-2022 and August-2022 impacted the City of Richmond EFF-002 TSS compliance but did not affect the City of Burlingame EFF-002 TSS compliance implying that something in the raw influent could be a contributing cause to the poor settling characteristics of the MLSS within the City of Richmond WWTF activated sludge process |
Violation |
U |
eSMR |
| 1108782 |
08/31/2022 |
CAT1 |
Total Suspended Solids (TSS), Percent Removal Percent Reduction limit is 85 % and reported value was 73 % at EFF-002. |
When comparison the comparison was made for the time period of 4/1/2022 to 9/8/2022 it was evident that the recent "Red Tide" event that started in August-2022 coupled to the "King Tide" events from July-2022 and August-2022 impacted the City of Richmond EFF-002 TSS compliance but did not affect the City of Burlingame EFF-002 TSS compliance implying that something in the raw influent could be a contributing cause to the poor settling characteristics of the MLSS within the City of Richmond WWTF activated sludge process |
Violation |
U |
eSMR |
| 1108775 |
08/27/2022 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 45 % and reported value was 47.7 % at EFF-002. |
The immediately evident and likely cause for the non-compliance was the restarting of flows through the Secondary Treatment unit processes which resulted in the washing-out of MLSS over the Secondary Clarifier weirs and, ultimately, to EFF-002 sampling point that was reported on 8/9/2022 as being likely due to a combination of already poor-performing MLSS sludge settling characteristics (ie. SVI > 320-mL/G) and the hydraulic flow increase through the Secondary Treatment unit processes upon the restarting of flows through these unit processes was confirmed on 8/10/2022 |
Violation |
U |
eSMR |
| 1108780 |
08/27/2022 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 82.7 mg/L at EFF-002. |
However, because the loss of critical MLSS concentration control levels that have dropped to less than 2700-mg/L, whereas when they range at an optimum range of 2900-mg/L to 3100-mg/L have routinely produced an EFF-002 TSS average concentration of less than 25-mg/L, return to a Weekly TSS average of 45-mg/L or less is anticipated to be achieved once MLSS concentrations reach the optimum range of 2900-mg/L to 3100-mg/L and this is expected to be achieved by 8/20/2022 |
Violation |
U |
eSMR |
| 1108774 |
08/20/2022 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 45 mg/L and reported value was 048.6 mg/L at EFF-002. |
The immediately evident and likely cause for the non-compliance was the restarting of flows through the Secondary Treatment unit processes which resulted in the washing-out of MLSS over the Secondary Clarifier weirs and, ultimately, to EFF-002 sampling point that was reported on 8/9/2022 as being likely due to a combination of already poor-performing MLSS sludge settling characteristics (ie. SVI > 320-mL/G) and the hydraulic flow increase through the Secondary Treatment unit processes upon the restarting of flows through these unit processes was confirmed on 8/10/2022 |
Violation |
U |
eSMR |
| 1108779 |
08/20/2022 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 114 mg/L at EFF-002. |
However, because the loss of critical MLSS concentration control levels that have dropped to less than 2700-mg/L, whereas when they range at an optimum range of 2900-mg/L to 3100-mg/L have routinely produced an EFF-002 TSS average concentration of less than 25-mg/L, return to a Weekly TSS average of 45-mg/L or less is anticipated to be achieved once MLSS concentrations reach the optimum range of 2900-mg/L to 3100-mg/L and this is expected to be achieved by 8/20/2022 |
Violation |
U |
eSMR |
| 1108772 |
08/13/2022 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 45 mg/L and reported value was 68.7 mg/L at EFF-002. |
The immediately evident and likely cause for the non-compliance was the restarting of flows through the Secondary Treatment unit processes which resulted in the washing-out of MLSS over the Secondary Clarifier weirs and, ultimately, to EFF-002 sampling point that was reported on 8/9/2022 as being likely due to a combination of already poor-performing MLSS sludge settling characteristics (ie. SVI > 320-mL/G) and the hydraulic flow increase through the Secondary Treatment unit processes upon the restarting of flows through these unit processes was confirmed on 8/10/2022 |
Violation |
U |
eSMR |
| 1108776 |
08/13/2022 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 168 mg/L at EFF-002. |
However, because the loss of critical MLSS concentration control levels that have dropped to less than 2700-mg/L, whereas when they range at an optimum range of 2900-mg/L to 3100-mg/L have routinely produced an EFF-002 TSS average concentration of less than 25-mg/L, return to a Weekly TSS average of 45-mg/L or less is anticipated to be achieved once MLSS concentrations reach the optimum range of 2900-mg/L to 3100-mg/L and this is expected to be achieved by 8/20/2022 |
Violation |
U |
eSMR |
| 1108771 |
08/11/2022 |
CAT2 |
Copper, Total Monthly Average (Mean) limit is 41 ug/L and reported value was 63 ug/L at EFF-001. |
The immediately evident and likely cause for the non-compliance was the restarting of flows through the Secondary Treatment unit processes which resulted in the washing-out of MLSS over the Secondary Clarifier weirs and, ultimately, to EFF-002 sampling point that was reported on 8/9/2022 as being likely due to a combination of already poor-performing MLSS sludge settling characteristics (ie. SVI > 320-mL/G) and the hydraulic flow increase through the Secondary Treatment unit processes upon the restarting of flows through these unit processes was confirmed on 8/10/2022 |
Violation |
U |
eSMR |
| 1108778 |
08/06/2022 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 96 mg/L at EFF-002. |
The immediately evident and likely cause for the non-compliance was the restarting of flows through the Secondary Treatment unit processes which resulted in the washing-out of MLSS over the Secondary Clarifier weirs and, ultimately, to EFF-002 sampling point that was reported on 8/9/2022 as being likely due to a combination of already poor-performing MLSS sludge settling characteristics (ie. SVI > 320-mL/G) and the hydraulic flow increase through the Secondary Treatment unit processes upon the restarting of flows through these unit processes was confirmed on 8/10/2022 |
Violation |
U |
eSMR |
| 1107627 |
07/31/2022 |
CAT1 |
Ammonia, Total (as N) Monthly Average (Mean) limit is 32 mg/L and reported value was 33.12 mg/L at EFF-001. |
The contributing cause from the City of Richmond wastewater treatment facility is believed to be the loss of sufficient nitrification capacity of the biological process as the plant, under its current biological configuration, loses ability to nitrify Ammonia as process water temperature increases resulting in greater challenges to maintain sufficient Dissolved Air concentrations in the Secondary Treatment Process to sustain nitrification of Ammonia to Nitrate.
The contributing cause from the West County Wastewater District has yet to be determined but, at this point, the two parties that are partners to the NPDES CA 0038539 permit do not have immediate cause to consider that the treated effluent from the West County Wastewater District is a contributor to the Ammonia non-compliance; however, it is of important note to state that as West County Wastewater District provides greater levels of their treated effluent to effluent reuse sites that dilution benefits from those low-Ammonia containing flows are significantly diminished at the EFF-001 point of compliance. |
Violation |
U |
eSMR |
| 1105893 |
05/28/2022 |
DMON |
On May 28, 2022, a coliform sample was collected and analyzed by method SM 9221 B, C. The sample was collected at the Chlorine Contact Basin II (CCB II) location as specified in the SOP. However, CCB II was offline at the time of sampling, and therefore resulted in a deficient sampling event, as the sample collected was not representative of the flow at the time. Corrective action was initiated, and the sampling location was changed to the outfall of the final CCB in operation and prior to dechlorination. |
Corrective action was initiated, and the sampling location was changed to the outfall of the final CCB in operation and prior to dechlorination. |
Violation |
U |
eSMR |
| 1104602 |
04/30/2022 |
CAT1 |
Total Suspended Solids (TSS) Monthly Average (Mean) limit is 30 mg/L and reported value was 33.4 mg/L at EFF-002. |
Steps taken or planned to reduce, eliminate and prevent recurrence of the non-compliance
Maintain MLSS concentration range between 2900-mg/L and 3100-mg/L
Continue to dose MLSS with cationic polymer and ferric chloride
Continue to monitoring MLSS for signs for filamentous blooms
Research potential for the introduction of chemical agents that could act as a biological floc decoupler and, if the potential exists, then seek out remedies with the City of Richmond Industrial Pretreatment Program to locate and control this source or sources |
Violation |
U |
eSMR |
| 1102670 |
02/28/2022 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average (Mean) limit is 30 mg/L and reported value was 30.71 mg/L at EFF-002. |
The City of Richmond's pre-treatment program is researching to locate a potential source. Ferric chloride and polymer feed to the secondary clarifiers is ongoing. We have added the third secondary clarifier into service to limit the work asked of each clarification unit. During this period the micro-exams showed severely depressed activity in our microorganisms and no growth.
The plant has met it's weekly BOD5 effluent quality limits of 45 mg/L for the same time frame. Final results for the monthly BOD average are now reported as we have complete the 5 day incubation period for the remaining samples. The last February daily result for EFF-02 BOD5 was 17 mg/L. |
Violation |
U |
eSMR |
| 1102668 |
02/28/2022 |
CAT1 |
Total Suspended Solids (TSS) Monthly Average (Mean) limit is 30 mg/L and reported value was 43.54 mg/L at EFF-002. |
The City of Richmond's pre-treatment program is researching to locate a potential source. Ferric chloride and polymer feed to the secondary clarifiers is ongoing. We have added the third secondary clarifier into service to limit the work asked of each clarification unit. During this period the micro-exams showed severely depressed activity in our microorganisms and no growth. |
Violation |
U |
eSMR |
| 1102669 |
02/19/2022 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 66.14 mg/L at EFF-002. |
The City of Richmond's pre-treatment program is researching to locate a potential source. Ferric chloride and polymer feed to the secondary clarifiers is ongoing. We have added the third secondary clarifier into service to limit the work asked of each clarification unit, and our current three day average for EFF-002 TSS is 38.3 mg/L. |
Violation |
U |
eSMR |
| 1102671 |
02/12/2022 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 47.43 mg/L at EFF-002. |
The City of Richmond's pre-treatment program is researching to locate a potential source. Ferric chloride and polymer feed to the secondary clarifiers is ongoing. We have added the third secondary clarifier into service to limit the work asked of each clarification unit, and our current three day average for EFF-002 TSS is 38.3 mg/L. |
Violation |
U |
eSMR |
| 1101090 |
01/31/2022 |
CAT1 |
Total Suspended Solids (TSS) Monthly Average (Mean) limit is 30 mg/L and reported value was 32.59 mg/L at EFF-002. |
We have currently completed our service and repair for Secondary Clarifiers #1 and #2. Clarifier #2 will be placed in service today. Clarifier #3 remains and work will begin this week for full inspection and service. |
Violation |
U |
eSMR |
| 1101091 |
01/29/2022 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 47.57 mg/L at EFF-002. |
We have currently completed our service and repair for Secondary Clarifiers #1 and #2. Clarifier #2 will be placed in service today. Clarifier #3 remains and work will begin this week for full inspection and service. |
Violation |
U |
eSMR |
| 1105515 |
12/31/2021 |
CAT1 |
Total Suspended Solids (TSS) Monthly Average (Mean) limit is 30 mg/L and reported value was 38 mg/L at EFF-002. |
None, heavy rainfall event and flow loading calculations impacted solids. |
Violation |
U |
eSMR |
| 1105516 |
12/18/2021 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 48 mg/L at EFF-002. |
None, heavy rainfall event and flow loading calculations impacted solids. |
Violation |
U |
eSMR |
| 1100231 |
10/24/2021 |
CAT2 |
Copper, Total Recoverable Daily Maximum limit is 76 ug/L and reported value was 95 ug/L at EFF-001B. |
Daily monitoring of location EFF-001B for duration of blending event. |
Violation |
U |
eSMR |
| 1095606 |
09/11/2021 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 55.29 mg/L at EFF-002. |
After the loss of the aerators and appropriate DO, sludge bulking was noted in all clarifiers and manual adjustments were made to clarifier flows and RAS rates but the growth of filaments was well advanced. Abnormally high influent flows, in excess of 11.0 MGD, seemed to accelerate the filament growth and further challenge the already compromised recovery or the biomass. We suspect that infiltration of seawater into the collection system, especially with the "king tides" that week would have aligned with this abnormally high influent. During the same period, we experienced heavy sediments at the low flow operation during the early mornings from 2AM to 6AM creating problematic odors and high influent TSS. Friday September 3, 2021 RAS chlorination was implemented and temporary polymer was added. We also relocated polymer dosing points for more effective application.
Unfortunately all of these measures did not provide sufficient recovery time to prevent an exceedance of the weekly effluent TSS limit in our permit. These adjustments did manage to effectively control treatment for the remainder of the month.
|
Violation |
U |
eSMR |
| 1092717 |
06/30/2021 |
CAT1 |
Total Suspended Solids (TSS) Monthly Average (Mean) limit is 30 mg/L and reported value was 42 mg/L at EFF-002. |
As of this letter we are demonstrating recovery of effluent quality, though not in time to meet the monthly target of 30 mg/l for average TSS.
Polymer addition is ongoing and switching to the current polymer has improved the effectiveness of settling. Effluent quality has greatly improved, dissolved oxygen has stabilized, and restored biological activity approaches a higher MCRT of 7.5 days. There has not been bulking in the clarifiers and there has been no evidence of effluent upsets in more than one week. Effluent TSS measured for the last week of June measured at 16 mg/L and weekly BOD5 was also tracking positively with an average 14 mg/L.
One additional 40 HP floating aerator is onsite for any immediate needs, and our order for the new gear drive to complete a full rebuild for the rotating aerator, as previously communicated, is being fabricated.
|
Violation |
U |
eSMR |
| 1092715 |
06/19/2021 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 63 mg/L at EFF-002. |
As of this letter we are demonstrating recovery of effluent quality, though not in time to meet the monthly target of 30 mg/l for average TSS.
Polymer addition is ongoing and switching to the current polymer has improved the effectiveness of settling. Effluent quality has greatly improved, dissolved oxygen has stabilized, and restored biological activity approaches a higher MCRT of 7.5 days. There has not been bulking in the clarifiers and there has been no evidence of effluent upsets in more than one week. Effluent TSS measured for the last week of June measured at 16 mg/L and weekly BOD5 was also tracking positively with an average 14 mg/L.
One additional 40 HP floating aerator is onsite for any immediate needs, and our order for the new gear drive to complete a full rebuild for the rotating aerator, as previously communicated, is being fabricated.
|
Violation |
U |
eSMR |
| 1092714 |
06/12/2021 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 45 mg/L and reported value was 48 mg/L at EFF-002. |
As of this letter we are demonstrating recovery of effluent quality, though not in time to meet the monthly target of 30 mg/l for average TSS.
Polymer addition is ongoing and switching to the current polymer has improved the effectiveness of settling. Effluent quality has greatly improved, dissolved oxygen has stabilized, and restored biological activity approaches a higher MCRT of 7.5 days. There has not been bulking in the clarifiers and there has been no evidence of effluent upsets in more than one week. Effluent TSS measured for the last week of June measured at 16 mg/L and weekly BOD5 was also tracking positively with an average 14 mg/L.
One additional 40 HP floating aerator is onsite for any immediate needs, and our order for the new gear drive to complete a full rebuild for the rotating aerator, as previously communicated, is being fabricated.
|
Violation |
U |
eSMR |
| 1092716 |
06/12/2021 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 59 mg/L at EFF-002. |
As of this letter we are demonstrating recovery of effluent quality, though not in time to meet the monthly target of 30 mg/l for average TSS.
Polymer addition is ongoing and switching to the current polymer has improved the effectiveness of settling. Effluent quality has greatly improved, dissolved oxygen has stabilized, and restored biological activity approaches a higher MCRT of 7.5 days. There has not been bulking in the clarifiers and there has been no evidence of effluent upsets in more than one week. Effluent TSS measured for the last week of June measured at 16 mg/L and weekly BOD5 was also tracking positively with an average 14 mg/L.
One additional 40 HP floating aerator is onsite for any immediate needs, and our order for the new gear drive to complete a full rebuild for the rotating aerator, as previously communicated, is being fabricated.
|
Violation |
U |
eSMR |
| 1089212 |
10/31/2020 |
Deficient Reporting |
Failed to sample Enterococci for 002-A for the monitoring period ending in October 2020. Self-reported in ICIS using the NODI code E for "failed to sample." |
|
Violation |
B |
Report |
| 1082116 |
10/31/2020 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average (Mean) limit is 30 mg/L and reported value was 48.59 mg/L at EFF-002. |
Replacement parts were located, repairs were completed, and both mechanical aerators 2A and 2C were returned to service as soon as possible. While repairs were underway, Plant staff installed two temporary floating mixers and removed the failed components of the mechanical aerators. Plant staff then continued to operate the floating mixers along with repaired aerators with electric power from other sources. Staff also added the operation of a diesel pump during daytime hours to assist with mixing and DO generation as well. On a temporary basis, Plant staff also added polymer and ferric chloride to the secondary clarifiers to assist with coagulation and settling, and they introduced additional sodium hypochlorite to the headworks and diversion basins to assist with odor control while dealing with the unknown black material found in the influent. Plant staff sent samples of the black material to the contracted laboratory for analysis, which showed high levels of carbon containing compounds. Plant staff mitigated the higher flows during the day by diverting flow to the Plant¿s diversion basins and then draining the basins to the Plant headworks during the night when influent flows are at the lowest. Plant staff continued working with Veolia¿s Subject Matter Expert¿s (SME¿s) in order to regain complete compliance with the permit parameters using the above strategies. As you can see by the above BOD and TSS table, while the Plant did regain compliance during the last week of October and has continued that compliance into November, the Plant will not have the Dissolved Air Flow Thickener (DAFT) equipment back in service until late in December. Plant staff will continue to operate the Temporary Gravity Belt Thickener until the new parts are installed, tested and the DAFT unit is operating effectively. |
Violation |
U |
eSMR |
| 1082117 |
10/31/2020 |
CAT1 |
Total Suspended Solids (TSS) Monthly Average (Mean) limit is 30 mg/L and reported value was 48.87 mg/L at EFF-002. |
Replacement parts were located, repairs were completed, and both mechanical aerators 2A and 2C were returned to service as soon as possible. While repairs were underway, Plant staff installed two temporary floating mixers and removed the failed components of the mechanical aerators. Plant staff then continued to operate the floating mixers along with repaired aerators with electric power from other sources. Staff also added the operation of a diesel pump during daytime hours to assist with mixing and DO generation as well. On a temporary basis, Plant staff also added polymer and ferric chloride to the secondary clarifiers to assist with coagulation and settling, and they introduced additional sodium hypochlorite to the headworks and diversion basins to assist with odor control while dealing with the unknown black material found in the influent. Plant staff sent samples of the black material to the contracted laboratory for analysis, which showed high levels of carbon containing compounds. Plant staff mitigated the higher flows during the day by diverting flow to the Plant¿s diversion basins and then draining the basins to the Plant headworks during the night when influent flows are at the lowest. Plant staff continued working with Veolia¿s Subject Matter Expert¿s (SME¿s) in order to regain complete compliance with the permit parameters using the above strategies. As you can see by the above BOD and TSS table, while the Plant did regain compliance during the last week of October and has continued that compliance into November, the Plant will not have the Dissolved Air Flow Thickener (DAFT) equipment back in service until late in December. Plant staff will continue to operate the Temporary Gravity Belt Thickener until the new parts are installed, tested and the DAFT unit is operating effectively. |
Violation |
U |
eSMR |
| 1082119 |
10/24/2020 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 47.86 mg/L at EFF-002. |
Replacement parts were located, repairs were completed, and both mechanical aerators 2A and 2C were returned to service as soon as possible. While repairs were underway, Plant staff installed two temporary floating mixers and removed the failed components of the mechanical aerators. Plant staff then continued to operate the floating mixers along with repaired aerators with electric power from other sources. Staff also added the operation of a diesel pump during daytime hours to assist with mixing and DO generation as well. On a temporary basis, Plant staff also added polymer and ferric chloride to the secondary clarifiers to assist with coagulation and settling, and they introduced additional sodium hypochlorite to the headworks and diversion basins to assist with odor control while dealing with the unknown black material found in the influent. Plant staff sent samples of the black material to the contracted laboratory for analysis, which showed high levels of carbon containing compounds. Plant staff mitigated the higher flows during the day by diverting flow to the Plant¿s diversion basins and then draining the basins to the Plant headworks during the night when influent flows are at the lowest. Plant staff continued working with Veolia¿s Subject Matter Expert¿s (SME¿s) in order to regain complete compliance with the permit parameters using the above strategies. As you can see by the above BOD and TSS table, while the Plant did regain compliance during the last week of October and has continued that compliance into November, the Plant will not have the Dissolved Air Flow Thickener (DAFT) equipment back in service until late in December. Plant staff will continue to operate the Temporary Gravity Belt Thickener until the new parts are installed, tested and the DAFT unit is operating effectively. |
Violation |
U |
eSMR |
| 1082122 |
10/17/2020 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 45 mg/L and reported value was 67.83 mg/L at EFF-002. |
Replacement parts were located, repairs were completed, and both mechanical aerators 2A and 2C were returned to service as soon as possible. While repairs were underway, Plant staff installed two temporary floating mixers and removed the failed components of the mechanical aerators. Plant staff then continued to operate the floating mixers along with repaired aerators with electric power from other sources. Staff also added the operation of a diesel pump during daytime hours to assist with mixing and DO generation as well. On a temporary basis, Plant staff also added polymer and ferric chloride to the secondary clarifiers to assist with coagulation and settling, and they introduced additional sodium hypochlorite to the headworks and diversion basins to assist with odor control while dealing with the unknown black material found in the influent. Plant staff sent samples of the black material to the contracted laboratory for analysis, which showed high levels of carbon containing compounds. Plant staff mitigated the higher flows during the day by diverting flow to the Plant¿s diversion basins and then draining the basins to the Plant headworks during the night when influent flows are at the lowest. Plant staff continued working with Veolia¿s Subject Matter Expert¿s (SME¿s) in order to regain complete compliance with the permit parameters using the above strategies. As you can see by the above BOD and TSS table, while the Plant did regain compliance during the last week of October and has continued that compliance into November, the Plant will not have the Dissolved Air Flow Thickener (DAFT) equipment back in service until late in December. Plant staff will continue to operate the Temporary Gravity Belt Thickener until the new parts are installed, tested and the DAFT unit is operating effectively. |
Violation |
U |
eSMR |
| 1082118 |
10/17/2020 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 64.29 mg/L at EFF-002. |
Replacement parts were located, repairs were completed, and both mechanical aerators 2A and 2C were returned to service as soon as possible. While repairs were underway, Plant staff installed two temporary floating mixers and removed the failed components of the mechanical aerators. Plant staff then continued to operate the floating mixers along with repaired aerators with electric power from other sources. Staff also added the operation of a diesel pump during daytime hours to assist with mixing and DO generation as well. On a temporary basis, Plant staff also added polymer and ferric chloride to the secondary clarifiers to assist with coagulation and settling, and they introduced additional sodium hypochlorite to the headworks and diversion basins to assist with odor control while dealing with the unknown black material found in the influent. Plant staff sent samples of the black material to the contracted laboratory for analysis, which showed high levels of carbon containing compounds. Plant staff mitigated the higher flows during the day by diverting flow to the Plant¿s diversion basins and then draining the basins to the Plant headworks during the night when influent flows are at the lowest. Plant staff continued working with Veolia¿s Subject Matter Expert¿s (SME¿s) in order to regain complete compliance with the permit parameters using the above strategies. As you can see by the above BOD and TSS table, while the Plant did regain compliance during the last week of October and has continued that compliance into November, the Plant will not have the Dissolved Air Flow Thickener (DAFT) equipment back in service until late in December. Plant staff will continue to operate the Temporary Gravity Belt Thickener until the new parts are installed, tested and the DAFT unit is operating effectively. |
Violation |
U |
eSMR |
| 1082121 |
10/10/2020 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 45 mg/L and reported value was 57.57 mg/L at EFF-002. |
Replacement parts were located, repairs were completed, and both mechanical aerators 2A and 2C were returned to service as soon as possible. While repairs were underway, Plant staff installed two temporary floating mixers and removed the failed components of the mechanical aerators. Plant staff then continued to operate the floating mixers along with repaired aerators with electric power from other sources. Staff also added the operation of a diesel pump during daytime hours to assist with mixing and DO generation as well. On a temporary basis, Plant staff also added polymer and ferric chloride to the secondary clarifiers to assist with coagulation and settling, and they introduced additional sodium hypochlorite to the headworks and diversion basins to assist with odor control while dealing with the unknown black material found in the influent. Plant staff sent samples of the black material to the contracted laboratory for analysis, which showed high levels of carbon containing compounds. Plant staff mitigated the higher flows during the day by diverting flow to the Plant¿s diversion basins and then draining the basins to the Plant headworks during the night when influent flows are at the lowest. Plant staff continued working with Veolia¿s Subject Matter Expert¿s (SME¿s) in order to regain complete compliance with the permit parameters using the above strategies. As you can see by the above BOD and TSS table, while the Plant did regain compliance during the last week of October and has continued that compliance into November, the Plant will not have the Dissolved Air Flow Thickener (DAFT) equipment back in service until late in December. Plant staff will continue to operate the Temporary Gravity Belt Thickener until the new parts are installed, tested and the DAFT unit is operating effectively. |
Violation |
U |
eSMR |
| 1082115 |
10/10/2020 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 56.29 mg/L at EFF-002. |
Replacement parts were located, repairs were completed, and both mechanical aerators 2A and 2C were returned to service as soon as possible. While repairs were underway, Plant staff installed two temporary floating mixers and removed the failed components of the mechanical aerators. Plant staff then continued to operate the floating mixers along with repaired aerators with electric power from other sources. Staff also added the operation of a diesel pump during daytime hours to assist with mixing and DO generation as well. On a temporary basis, Plant staff also added polymer and ferric chloride to the secondary clarifiers to assist with coagulation and settling, and they introduced additional sodium hypochlorite to the headworks and diversion basins to assist with odor control while dealing with the unknown black material found in the influent. Plant staff sent samples of the black material to the contracted laboratory for analysis, which showed high levels of carbon containing compounds. Plant staff mitigated the higher flows during the day by diverting flow to the Plant¿s diversion basins and then draining the basins to the Plant headworks during the night when influent flows are at the lowest. Plant staff continued working with Veolia¿s Subject Matter Expert¿s (SME¿s) in order to regain complete compliance with the permit parameters using the above strategies. As you can see by the above BOD and TSS table, while the Plant did regain compliance during the last week of October and has continued that compliance into November, the Plant will not have the Dissolved Air Flow Thickener (DAFT) equipment back in service until late in December. Plant staff will continue to operate the Temporary Gravity Belt Thickener until the new parts are installed, tested and the DAFT unit is operating effectively. |
Violation |
U |
eSMR |
| 1082120 |
10/03/2020 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 45 mg/L and reported value was 49 mg/L at EFF-002. |
Replacement parts were located, repairs were completed, and both mechanical aerators 2A and 2C were returned to service as soon as possible. While repairs were underway, Plant staff installed two temporary floating mixers and removed the failed components of the mechanical aerators. Plant staff then continued to operate the floating mixers along with repaired aerators with electric power from other sources. Staff also added the operation of a diesel pump during daytime hours to assist with mixing and DO generation as well. On a temporary basis, Plant staff also added polymer and ferric chloride to the secondary clarifiers to assist with coagulation and settling, and they introduced additional sodium hypochlorite to the headworks and diversion basins to assist with odor control while dealing with the unknown black material found in the influent. Plant staff sent samples of the black material to the contracted laboratory for analysis, which showed high levels of carbon containing compounds. Plant staff mitigated the higher flows during the day by diverting flow to the Plant¿s diversion basins and then draining the basins to the Plant headworks during the night when influent flows are at the lowest. Plant staff continued working with Veolia¿s Subject Matter Expert¿s (SME¿s) in order to regain complete compliance with the permit parameters using the above strategies. As you can see by the above BOD and TSS table, while the Plant did regain compliance during the last week of October and has continued that compliance into November, the Plant will not have the Dissolved Air Flow Thickener (DAFT) equipment back in service until late in December. Plant staff will continue to operate the Temporary Gravity Belt Thickener until the new parts are installed, tested and the DAFT unit is operating effectively. |
Violation |
U |
eSMR |
| 1080763 |
09/30/2020 |
CAT1 |
Ammonia, Total (as N) Monthly Mean limit is 32 mg/L and reported value was 34.63 mg/L at EFF-001. |
We have been working with Company SME's on the BOD issue as this seems to be related to the inability to run the site aerators in auto without issues and even in manual are having issues achieving our needed set point of oxygen on a continual basis.
Many changes including employee training, additional internal process testing, review of the treatment equipment and capabilities, and utilization of enhanced chemical treatment were implemented as soon as this was identified. We will continue to do everything possible with the operating equipment we have to regain complete compliance with the permit parameters using the above strategies.
|
Violation |
U |
eSMR |
| 1080762 |
09/30/2020 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Mean limit is 30 mg/L and reported value was 31.62 mg/L at EFF-002. |
We have been working with Company SME's on the BOD issue as this seems to be related to the inability to run the site aerators in auto without issues and even in manual are having issues achieving our needed set point of oxygen on a continual basis.
Many changes including employee training, additional internal process testing, review of the treatment equipment and capabilities, and utilization of enhanced chemical treatment were implemented as soon as this was identified. We will continue to do everything possible with the operating equipment we have to regain complete compliance with the permit parameters using the above strategies.
|
Violation |
U |
eSMR |
| 1079927 |
08/31/2020 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average (Mean) limit is 30 mg/L and reported value was 32.29 mg/L at EFF-002. |
We consulted with Carollo¿s Engineering /Water Quality Experts as well as one of Veolia¿s technical experts, Kumar Upendrakumar, P.E., BCEE, Director of Engineering/ Technical & Performance. Samples of MLSS and the resulting foam were contracted out to AquaFix for technical analysis. Based on the data from our microscopic lab report and recommendations from both technical groups, it was determined Nocardia was the dominant filament present. As a result, Veolia operations chlorinated the RAS and wasted heavily during a 48hr period to remove the dead organic material from the system.
Currently, the system has stabilized with continual chlorination and the addition of a nutrient defoamer to Aeration allowing the proper microbial community to dominate. Also, the application of ferric chloride, polymer, and degreaser to the primary clarifiers also has contributed to a stabilization of the system in lieu of the DAF system.
After reporting to the city in July, the city's pretreatment program has increased monitoring and inspections of businesses thought to be contributing to the loading. In partnership with the City, we placed portable samplers around the collection system and at the plant to investigate any possible discharge events. Results have been inconclusive at this time.
After operations drained the DAF unit, Veolia maintenance staff conducted the assessment of the DAF unit and was able to identify the issues. Because of the age of the unit and certain parts unavailable, some parts must be custom fabricated with a lead time of at least 14 -16 weeks before they can be delivered and installed. As a result, Veolia has moved forward with procuring a temporary portable sludge thickener to replace the unit (eta 1- 2 weeks). Until then, operations will continue to recirculate WAS to headworks to be settled out in the Primary Clarifiers with the addition of the settling agents (Polymer/Ferric Chloride).
|
Violation |
U |
eSMR |
| 1079926 |
08/31/2020 |
CAT1 |
Total Suspended Solids (TSS) Monthly Average (Mean) limit is 30 mg/L and reported value was 31.39 mg/L at EFF-002. |
We consulted with Carollo¿s Engineering /Water Quality Experts as well as one of Veolia¿s technical experts, Kumar Upendrakumar, P.E., BCEE, Director of Engineering/ Technical & Performance. Samples of MLSS and the resulting foam were contracted out to AquaFix for technical analysis. Based on the data from our microscopic lab report and recommendations from both technical groups, it was determined Nocardia was the dominant filament present. As a result, Veolia operations chlorinated the RAS and wasted heavily during a 48hr period to remove the dead organic material from the system.
Currently, the system has stabilized with continual chlorination and the addition of a nutrient defoamer to Aeration allowing the proper microbial community to dominate. Also, the application of ferric chloride, polymer, and degreaser to the primary clarifiers also has contributed to a stabilization of the system in lieu of the DAF system.
After reporting to the city in July, the city's pretreatment program has increased monitoring and inspections of businesses thought to be contributing to the loading. In partnership with the City, we placed portable samplers around the collection system and at the plant to investigate any possible discharge events. Results have been inconclusive at this time.
After operations drained the DAF unit, Veolia maintenance staff conducted the assessment of the DAF unit and was able to identify the issues. Because of the age of the unit and certain parts unavailable, some parts must be custom fabricated with a lead time of at least 14 -16 weeks before they can be delivered and installed. As a result, Veolia has moved forward with procuring a temporary portable sludge thickener to replace the unit (eta 1- 2 weeks). Until then, operations will continue to recirculate WAS to headworks to be settled out in the Primary Clarifiers with the addition of the settling agents (Polymer/Ferric Chloride). |
Violation |
U |
eSMR |
| 1079928 |
08/15/2020 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 49.71 mg/L at EFF-002. |
We consulted with Carollo¿s Engineering /Water Quality Experts as well as one of Veolia¿s technical experts, Kumar Upendrakumar, P.E., BCEE, Director of Engineering/ Technical & Performance. Samples of MLSS and the resulting foam were contracted out to AquaFix for technical analysis. Based on the data from our microscopic lab report and recommendations from both technical groups, it was determined Nocardia was the dominant filament present. As a result, Veolia operations chlorinated the RAS and wasted heavily during a 48hr period to remove the dead organic material from the system.
Currently, the system has stabilized with continual chlorination and the addition of a nutrient defoamer to Aeration allowing the proper microbial community to dominate. Also, the application of ferric chloride, polymer, and degreaser to the primary clarifiers also has contributed to a stabilization of the system in lieu of the DAF system.
After reporting to the city in July, the city's pretreatment program has increased monitoring and inspections of businesses thought to be contributing to the loading. In partnership with the City, we placed portable samplers around the collection system and at the plant to investigate any possible discharge events. Results have been inconclusive at this time.
After operations drained the DAF unit, Veolia maintenance staff conducted the assessment of the DAF unit and was able to identify the issues. Because of the age of the unit and certain parts unavailable, some parts must be custom fabricated with a lead time of at least 14 -16 weeks before they can be delivered and installed. As a result, Veolia has moved forward with procuring a temporary portable sludge thickener to replace the unit (eta 1- 2 weeks). Until then, operations will continue to recirculate WAS to headworks to be settled out in the Primary Clarifiers with the addition of the settling agents (Polymer/Ferric Chloride).
|
Violation |
U |
eSMR |
| 1071432 |
11/30/2019 |
CAT1 |
Ammonia, Total (as N) Monthly Average limit is 32 mg/L and reported value was 33 mg/L at EFF-001. |
2. Corrective Action
a. For High Ammonia
i. The MLSS concentration was raised and this corrected the non-conforming condition for EFF-002 Ammonia concentration discharge to combined EFF-001
b. For Failure to accurately report high Ammonia
i. An upgraded laboratory data QA/QC review shall be put into place that shall provide for a fail-safe electronic method of validating monthly data so violations are not missed.
ii. Both laboratory technicians shall be trained to enter permit data into HACH WIMS and ensure monthly and daily limits are flagged within the system to alert of a permit exceeded prior to reporting.
iii. Immediate sampling of EFF-001 NH3 shall take place following a high preliminary result email from the contract laboratory.
iv. Sampling for nutrients shall take place the first and third weeks of the month to ensure ample time to re-sample if needed.
|
Violation |
U |
eSMR |
|
Report displays most recent five years of violations. Refer to the Interactive Violation Report for more data.
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