| Violation ID |
Occurred Date |
Violation Type |
(-) Violation Description |
Corrective Action |
Status |
Classification |
Source |
| 1127427 |
02/29/2024 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average (Mean) limit is 105000 lb/day and reported value was 205540 lb/day at EFF-002. |
To alleviate the effluent quality issues during the recovery process, several measures have taken. Ferric chloride dosage was increased to the primary treatment. Standby secondary reactor trains were put in service. Solids were transferred into standby anaerobic digesters to sustain solids from the primary and secondary treatment. |
Violation |
U |
eSMR |
| 1127428 |
02/29/2024 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average (Mean) limit is 30 mg/L and reported value was 80 mg/L at EFF-002. |
To alleviate the effluent quality issues during the recovery process, several measures have taken. Ferric chloride dosage was increased to the primary treatment. Standby secondary reactor trains were put in service. Solids were transferred into standby anaerobic digesters to sustain solids from the primary and secondary treatment. |
Violation |
U |
eSMR |
| 1127416 |
02/29/2024 |
CAT1 |
Total Suspended Solids (TSS) Monthly Average (Mean) limit is 105000 lb/day and reported value was 270260 lb/day at EFF-002. |
To alleviate the effluent quality issues during the recovery process, several measures have taken. Ferric chloride dosage was increased to the primary treatment. Standby secondary reactor trains were put in service. Solids were transferred into standby anaerobic digesters to sustain solids from the primary and secondary treatment. |
Violation |
U |
eSMR |
| 1127415 |
02/29/2024 |
CAT1 |
Total Suspended Solids (TSS) Monthly Average limit is 30 mg/L and reported value was 105 mg/L at EFF-002. |
To alleviate the effluent quality issues during the recovery process, several measures have taken. Ferric chloride dosage was increased to the primary treatment. Standby secondary reactor trains were put in service. Solids were transferred into standby anaerobic digesters to sustain solids from the primary and secondary treatment. |
Violation |
U |
eSMR |
| 1127436 |
02/29/2024 |
CAT1 |
Total Suspended Solids (TSS), Percent Removal Monthly Average limit is 85 % and reported value was 83 % at EFF-002. |
To alleviate the effluent quality issues during the recovery process, several measures have taken. Ferric chloride dosage was increased to the primary treatment. Standby secondary reactor trains were put in service. Solids were transferred into standby anaerobic digesters to sustain solids from the primary and secondary treatment. |
Violation |
U |
eSMR |
| 1127422 |
02/29/2024 |
CAT2 |
Copper, Total Recoverable Monthly Average limit is 16 ug/L and reported value was 30.1 ug/L at EFF-001. |
To alleviate the effluent quality issues during the recovery process, several measures have taken. Ferric chloride dosage was increased to the primary treatment. Standby secondary reactor trains were put in service. Solids were transferred into standby anaerobic digesters to sustain solids from the primary and secondary treatment. |
Violation |
U |
eSMR |
| 1127421 |
02/24/2024 |
OEV |
Turbidity Weekly Average limit is 100 NTU and reported value was 101 NTU at EFF-002. |
To alleviate the effluent quality issues during the recovery process, several measures have taken. Ferric chloride dosage was increased to the primary treatment. Standby secondary reactor trains were put in service. Solids were transferred into standby anaerobic digesters to sustain solids from the primary and secondary treatment. |
Violation |
U |
eSMR |
| 1127414 |
02/24/2024 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average limit is 160000 lb/day and reported value was 334380 lb/day at EFF-002. |
To alleviate the effluent quality issues during the recovery process, several measures have taken. Ferric chloride dosage was increased to the primary treatment. Standby secondary reactor trains were put in service. Solids were transferred into standby anaerobic digesters to sustain solids from the primary and secondary treatment. |
Violation |
U |
eSMR |
| 1127413 |
02/24/2024 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average limit is 45 mg/L and reported value was 133 mg/L at EFF-002. |
To alleviate the effluent quality issues during the recovery process, several measures have taken. Ferric chloride dosage was increased to the primary treatment. Standby secondary reactor trains were put in service. Solids were transferred into standby anaerobic digesters to sustain solids from the primary and secondary treatment. |
Violation |
U |
eSMR |
| 1127419 |
02/24/2024 |
CAT1 |
Settleable Solids Weekly Average limit is 1.5 ml/L and reported value was 12 ml/L. |
To alleviate the effluent quality issues during the recovery process, several measures have taken. Ferric chloride dosage was increased to the primary treatment. Standby secondary reactor trains were put in service. Solids were transferred into standby anaerobic digesters to sustain solids from the primary and secondary treatment. |
Violation |
U |
eSMR |
| 1127441 |
02/24/2024 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average limit is 160000 lb/day and reported value was 484510 lb/day at EFF-002. |
To alleviate the effluent quality issues during the recovery process, several measures have taken. Ferric chloride dosage was increased to the primary treatment. Standby secondary reactor trains were put in service. Solids were transferred into standby anaerobic digesters to sustain solids from the primary and secondary treatment.
|
Violation |
U |
eSMR |
| 1127437 |
02/24/2024 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average limit is 45 mg/L and reported value was 193 mg/L at EFF-002. |
To alleviate the effluent quality issues during the recovery process, several measures have taken. Ferric chloride dosage was increased to the primary treatment. Standby secondary reactor trains were put in service. Solids were transferred into standby anaerobic digesters to sustain solids from the primary and secondary treatment.
|
Violation |
U |
eSMR |
| 1127417 |
02/21/2024 |
CAT1 |
Settleable Solids Instantaneous Maximum limit is 3 ml/L and reported value was 18 ml/L at EFF-002. |
To alleviate the effluent quality issues during the recovery process, several measures have taken. Ferric chloride dosage was increased to the primary treatment. Standby secondary reactor trains were put in service. Solids were transferred into standby anaerobic digesters to sustain solids from the primary and secondary treatment. |
Violation |
U |
eSMR |
| 1127440 |
02/20/2024 |
CAT1 |
Settleable Solids Instantaneous Maximum limit is 3 ml/L and reported value was 14 ml/L at EFF-002. |
To alleviate the effluent quality issues during the recovery process, several measures have taken. Ferric chloride dosage was increased to the primary treatment. Standby secondary reactor trains were put in service. Solids were transferred into standby anaerobic digesters to sustain solids from the primary and secondary treatment. |
Violation |
U |
eSMR |
| 1127420 |
02/19/2024 |
OEV |
Turbidity Instantaneous Maximum limit is 225 NTU and reported value was 230 NTU at EFF-002. |
To alleviate the effluent quality issues during the recovery process, several measures have taken. Ferric chloride dosage was increased to the primary treatment. Standby secondary reactor trains were put in service. Solids were transferred into standby anaerobic digesters to sustain solids from the primary and secondary treatment. |
Violation |
U |
eSMR |
| 1127433 |
02/19/2024 |
CAT1 |
Settleable Solids Instantaneous Maximum limit is 3 ml/L and reported value was 31 ml/L at EFF-002. |
To alleviate the effluent quality issues during the recovery process, several measures have taken. Ferric chloride dosage was increased to the primary treatment. Standby secondary reactor trains were put in service. Solids were transferred into standby anaerobic digesters to sustain solids from the primary and secondary treatment. |
Violation |
U |
eSMR |
| 1127432 |
02/18/2024 |
CAT1 |
Settleable Solids Instantaneous Maximum limit is 3 ml/L and reported value was 20 ml/L at EFF-002. |
To alleviate the effluent quality issues during the recovery process, several measures have taken. Ferric chloride dosage was increased to the primary treatment. Standby secondary reactor trains were put in service. Solids were transferred into standby anaerobic digesters to sustain solids from the primary and secondary treatment. |
Violation |
U |
eSMR |
| 1127435 |
02/17/2024 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average limit is 160000 lb/day and reported value was 228050 lb/day at EFF-002. |
To alleviate the effluent quality issues during the recovery process, several measures have taken. Ferric chloride dosage was increased to the primary treatment. Standby secondary reactor trains were put in service. Solids were transferred into standby anaerobic digesters to sustain solids from the primary and secondary treatment. |
Violation |
U |
eSMR |
| 1127434 |
02/17/2024 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average limit is 45 mg/L and reported value was 100 mg/L at EFF-002. |
To alleviate the effluent quality issues during the recovery process, several measures have taken. Ferric chloride dosage was increased to the primary treatment. Standby secondary reactor trains were put in service. Solids were transferred into standby anaerobic digesters to sustain solids from the primary and secondary treatment. |
Violation |
U |
eSMR |
| 1127431 |
02/17/2024 |
CAT1 |
Settleable Solids Instantaneous Maximum limit is 3 ml/L and reported value was 20 ml/L at EFF-002. |
To alleviate the effluent quality issues during the recovery process, several measures have taken. Ferric chloride dosage was increased to the primary treatment. Standby secondary reactor trains were put in service. Solids were transferred into standby anaerobic digesters to sustain solids from the primary and secondary treatment. |
Violation |
U |
eSMR |
| 1127418 |
02/17/2024 |
CAT1 |
Settleable Solids Weekly Average limit is 1.5 ml/L and reported value was 8.1 ml/L at EFF-002. |
To alleviate the effluent quality issues during the recovery process, several measures have taken. Ferric chloride dosage was increased to the primary treatment. Standby secondary reactor trains were put in service. Solids were transferred into standby anaerobic digesters to sustain solids from the primary and secondary treatment. |
Violation |
U |
eSMR |
| 1127443 |
02/17/2024 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average limit is 160000 lb/day and reported value was 316010 lb/day at EFF-002. |
To alleviate the effluent quality issues during the recovery process, several measures have taken. Ferric chloride dosage was increased to the primary treatment. Standby secondary reactor trains were put in service. Solids were transferred into standby anaerobic digesters to sustain solids from the primary and secondary treatment. |
Violation |
U |
eSMR |
| 1127442 |
02/17/2024 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average limit is 45 mg/L and reported value was 139 mg/L at EFF-002. |
To alleviate the effluent quality issues during the recovery process, several measures have taken. Ferric chloride dosage was increased to the primary treatment. Standby secondary reactor trains were put in service. Solids were transferred into standby anaerobic digesters to sustain solids from the primary and secondary treatment. |
Violation |
U |
eSMR |
| 1127430 |
02/16/2024 |
CAT1 |
Settleable Solids Instantaneous Minimum limit is 3 ml/L and reported value was 13 ml/L at EFF-002. |
To alleviate the effluent quality issues during the recovery process, several measures have taken. Ferric chloride dosage was increased to the primary treatment. Standby secondary reactor trains were put in service. Solids were transferred into standby anaerobic digesters to sustain solids from the primary and secondary treatment. |
Violation |
U |
eSMR |
| 1127439 |
02/15/2024 |
CAT1 |
Settleable Solids Instantaneous Maximum limit is 3 ml/L and reported value was 19 ml/L at EFF-002. |
To alleviate the effluent quality issues during the recovery process, several measures have taken. Ferric chloride dosage was increased to the primary treatment. Standby secondary reactor trains were put in service. Solids were transferred into standby anaerobic digesters to sustain solids from the primary and secondary treatment.
|
Violation |
U |
eSMR |
| 1127438 |
02/14/2024 |
CAT1 |
Settleable Solids Instantaneous Maximum limit is 3 ml/L and reported value was 4.5 ml/L at EFF-002. |
To alleviate the effluent quality issues during the recovery process, several measures have taken. Ferric chloride dosage was increased to the primary treatment. Standby secondary reactor trains were put in service. Solids were transferred into standby anaerobic digesters to sustain solids from the primary and secondary treatment. |
Violation |
U |
eSMR |
| 1127425 |
02/10/2024 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average limit is 45 mg/L and reported value was 60 mg/L at EFF-001. |
To alleviate the effluent quality issues during the recovery process, several measures have taken. Ferric chloride dosage was increased to the primary treatment. Standby secondary reactor trains were put in service. Solids were transferred into standby anaerobic digesters to sustain solids from the primary and secondary treatment. |
Violation |
U |
eSMR |
| 1127426 |
02/10/2024 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average limit is 45 mg/L and reported value was 88.9 mg/L at EFF-001. |
To alleviate the effluent quality issues during the recovery process, several measures have taken. Ferric chloride dosage was increased to the primary treatment. Standby secondary reactor trains were put in service. Solids were transferred into standby anaerobic digesters to sustain solids from the primary and secondary treatment. |
Violation |
U |
eSMR |
| 1127429 |
02/05/2024 |
DMON |
Temperature is continuous monitoring requirement for both discharge locations. During the discharge from the 1-mile outfall on February 5th, temperature was not monitored. |
|
Violation |
U |
eSMR |
| 1127423 |
02/05/2024 |
CAT2 |
Copper, Total Recoverable Instantaneous Maximum limit is 160 ug/L and reported value was 873 ug/L at EFF-001. |
To alleviate the effluent quality issues during the recovery process, several measures have taken. Ferric chloride dosage was increased to the primary treatment. Standby secondary reactor trains were put in service. Solids were transferred into standby anaerobic digesters to sustain solids from the primary and secondary treatment. |
Violation |
U |
eSMR |
| 1127424 |
02/05/2024 |
CTOX |
Chronic Toxicity Maximum Daily (MDEL) limit is 0 Pass/Fail (Pass = 0, Fail = 1) and reported value was 1 Pass/Fail (Pass = 0, Fail = 1) at EFF-001. |
To alleviate the effluent quality issues during the recovery process, several measures have taken. Ferric chloride dosage was increased to the primary treatment. Standby secondary reactor trains were put in service. Solids were transferred into standby anaerobic digesters to sustain solids from the primary and secondary treatment. |
Violation |
U |
eSMR |
| 1122502 |
09/09/2023 |
DMON |
All Hyperion influent samples were collected, but the effluent was not. September 9 was a Saturday so the sampling could not be rescheduled. Per the NPDES permit, the day of sampling for weekly constituents must rotate week-to-week with all days being represented. |
The sample collection schedule was reiterated and operators were reminded of the required weekly sampling. |
Violation |
U |
eSMR |
| 1119953 |
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 35 mg/L at EFF-002. |
The dewatering processes returned to normal operation and the effluent quality returned to a compliant level by the end of June 2023. |
Violation |
B |
eSMR |
| 1119955 |
06/30/2023 |
CAT1 |
Total Suspended Solids (TSS) Monthly Average (Mean) limit is 30 mg/L and reported value was 32 mg/L at EFF-002. |
The dewatering processes returned to normal operation and the effluent quality returned to a compliant level by the end of June 2023. |
Violation |
B |
eSMR |
| 1119954 |
06/26/2023 |
CAT1 |
Settleable Solids Instantaneous Maximum limit is 1 ml/L and reported value was 9 ml/L at EFF-002. |
The dewatering processes returned to normal operation and the effluent quality returned to a compliant level by the end of June 2023. |
Violation |
B |
eSMR |
| 1119141 |
05/31/2023 |
DMON |
Two new requirements in the effective NPDES permit were missed in May, but corrected in June: the monitoring of copper in influent and organic-nitrogen in effluent. Both of these analyses are required monthly. Organic-nitrogen is required to calculate total nitrogen, another monthly requirement. |
The missing analysis requirements were communicated with the labs, documented on COCs, and verified in the LIMS system. |
Violation |
U |
eSMR |
| 1116657 |
02/28/2023 |
CAT1 |
Total Suspended Solids (TSS) Monthly Average (Mean) limit is 30 mg/L and reported value was 36 mg/L at EFF-002. |
In response, the cleaning of the primary tanks has been slowed to prevent similar overloading incidents. |
Violation |
B |
eSMR |
| 1112236 |
10/16/2022 |
DMON |
There was an autosampler malfunction and no sample could be collected October 16, 2022 for INF-001. Monitoring of suspended solids and biochemical oxygen demand are required daily for each individual influent sewer. |
N/A |
Violation |
U |
eSMR |
| 1109948 |
08/29/2022 |
CTOX |
Chronic Toxicity Maximum Daily (MDEL) limit is 0 Pass/Fail (Pass = 0, Fail = 1) and reported value was 1 Pass/Fail (Pass = 0, Fail = 1) at EFF-002. |
N/A |
Violation |
B |
eSMR |
| 1109218 |
07/21/2022 |
DMON |
Stations 4003 and IS-01 were not monitored during the Santa Monica Bay Offshore Water Quality survey or the annual Inshore Water Quality Monitoring, respectively. There have been delays renewing the California Department of Fish and Wildlife Scientific Collection Permit and these two stations are located in the Marine Protected Area extending south from Point Dume. They could not be sampled without a valid Scientific Collection Permit. The remainder of the quarter was spent on additional required monitoring activities that fully require the Scientific Collection Permit. |
The Scientific Collection Permit was renewed and effective July 25, 2022. |
Violation |
U |
eSMR |
| 1109217 |
07/14/2022 |
DMON |
Stations 4003 and IS-01 were not monitored during the Santa Monica Bay Offshore Water Quality survey or the annual Inshore Water Quality Monitoring, respectively. There have been delays renewing the California Department of Fish and Wildlife Scientific Collection Permit and these two stations are located in the Marine Protected Area extending south from Point Dume. They could not be sampled without a valid Scientific Collection Permit. The remainder of the quarter was spent on additional required monitoring activities that fully require the Scientific Collection Permit. |
The Scientific Collection Permit was renewed and effective July 25, 2022. |
Violation |
U |
eSMR |
| 1107973 |
06/21/2022 |
DMON |
Station 4003 was not monitored during the Santa Monica Bay Offshore Water Quality survey. There have been delays renewing the California Department of Fish and Wildlife Scientific Collection Permit and this station is located in the Marine Protected Area extending south from Point Dume. It could not be sampled without a valid Scientific Collection Permit. |
The Scientific Collection Permit was renewed and effective July 25, 2022. |
Violation |
U |
eSMR |
| 1106960 |
05/31/2022 |
CAT1 |
Total Suspended Solids (TSS) Monthly Average (Mean) limit is 30 mg/L and reported value was 31 mg/L at EFF-002. |
NA |
Violation |
U |
eSMR |
| 1106959 |
05/22/2022 |
DMON |
The CWIS samples with sample dates 5/22/22, 5/23/22, and 5/24/22 are reported as AE for BOD analysis. This was due to the unexpected high TSS on those days, even though analysts diluted the samples, oxygen was completely depleted. |
NA |
Violation |
U |
eSMR |
| 1106096 |
04/06/2022 |
DMON |
The April 6 biochemical oxygen demand (BOD) analysis for the NORS influent sewer had no depletion and is considered an analyst error. BOD analysis of the influent sewers is required daily. |
Analysts will ensure each sample is carefully added separately and to inspect bottles prior to running analysis to ensure they have been added. |
Violation |
U |
eSMR |
| 1105403 |
03/31/2022 |
CAT1 |
Total Suspended Solids (TSS) Monthly Average (Mean) limit is 30 mg/L and reported value was 31 mg/L at EFF-002. |
N/A |
Violation |
U |
eSMR |
| 1103993 |
02/08/2022 |
DMON |
A review of effluent TSS data on February 14, 2022, discovered a high result of 71 mg/L on the February 8 sample, outside the normal range of recent results. Typically, the ratio of biological oxygen demand (BOD) and TSS are near 1:1, but the ratio for that day was 2.7:1. Other effluent parameters, such as BOD (26 mg/L), turbidity (13 NTU), and settleable solids (<0.1 mL) were within the expected range. A reanalysis of the sample that was conducted one day past the acceptable holding time yielded a result of 22 mg/L, within the expected range. The original TSS result has been determined to be invalid. The reanalysis, while it produced the expected result, is also invalid as it was past the holding time of the sample. TSS monitoring in Hyperion effluent is required daily and there is no valid result to report for February 8. |
The original analyst failed to follow proper notification procedures in the event of out-of-control or outside-acceptance-limit results and has been retrained on proper procedures. |
Violation |
U |
eSMR |
| 1102966 |
01/31/2022 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average (Mean) limit is 30 mg/L and reported value was 44 mg/L at EFF-002. |
NA |
Violation |
U |
eSMR |
| 1102967 |
01/31/2022 |
CAT1 |
Total Suspended Solids (TSS) Monthly Average (Mean) limit is 30 mg/L and reported value was 41 mg/L at EFF-002. |
NA |
Violation |
U |
eSMR |
| 1102968 |
01/28/2022 |
DMON |
On January 28, all influent and effluent biological oxygen demand results were invalid due to quality control (QC) failures. |
The believed source of these QC failures is contamination of the reverse osmosis water used during analysis. The water line was investigated and QC samples passed for January 29 samples. |
Violation |
U |
eSMR |
| 1102964 |
01/08/2022 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 45 mg/L and reported value was 66 mg/L at EFF-002. |
NA |
Violation |
U |
eSMR |
| 1102965 |
01/08/2022 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 52 mg/L at EFF-002. |
NA |
Violation |
U |
eSMR |
| 1101921 |
12/31/2021 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average limit is 30 mg/L and reported value was 31 mg/L at EFF-002. |
NA |
Violation |
U |
eSMR |
| 1110021 |
10/18/2021 |
DMON |
Section 1 of the CWC 13383 Order and its amendments require that LASAN perform daily offshore sampling. LASAN failed to perform offshore sampling as required by the CWC 13383 Order and its amendments on the following dates:
Daily from September 3, 2021 through September 9, 2021; September 11, 2021; September 12, 2021; September 17, 2021; September 20, 2021; September 22, 2021; October 6, 2021; October 18, 2021 |
|
Violation |
B |
Report |
| 1098834 |
10/02/2021 |
CAT1 |
Settleable Solids Instantaneous Maximum limit is 3 ml/L and reported value was 12 ml/L at EFF-002. |
The indication on one of the RAS valves showed open, but was verified to be closed. The problem was corrected and the clarifier returned to normal operations. |
Violation |
U |
eSMR |
| 1098835 |
10/01/2021 |
DMON |
The monitoring of temperature is a continuous requirement of the effluent. There is no data for the month of October, 2021, from October 1 through October 27 due to damage of the equipment sustained during the July 11 overflow and flooding incident. This is a Deficient Monitoring Violation. Temperature monitoring resumed October 28. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and why in order to prevent the occurrence of a similar incident. Assessments will include but not limited to the following: 1. Assessment of the mechanically-raked barscreens and improve the design to ensure that the barscreens are be able to handle excessive amounts of trash and debris. 2. Review of Standard Operation Procedures and Hyperion operator's training for operation of the emergency bypass channel. This ensures operators are prepared to handle a similar emergency as needed. 3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical equipment located below ground. 4. Increased public education effort to reduce trash and debris in the sewer system and into the plant. |
Violation |
U |
eSMR |
| 1097871 |
09/30/2021 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average (Mean) limit is 30 mg/L and reported value was 33 mg/L at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and why in order to prevent the occurrence of a similar incident. Assessments will include but not limited to the following: 1. Assessment of the mechanically-raked barscreens and improve the design to ensure that the barscreens are be able to handle excessive amounts of trash and debris. 2. Review of Standard Operation Procedures and Hyperion operator's training for operation of the emergency bypass channel. This ensures operators are prepared to handle a similar emergency as needed. 3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical equipment located below ground. 4. Increased public education effort to reduce trash and debris in the sewer system and into the plant. |
Violation |
U |
eSMR |
| 1097870 |
09/30/2021 |
CAT1 |
Total Suspended Solids (TSS) Monthly Average (Mean) limit is 30 mg/L and reported value was 35 mg/L at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and why in order to prevent the occurrence of a similar incident. Assessments will include but not limited to the following: 1. Assessment of the mechanically-raked barscreens and improve the design to ensure that the barscreens are be able to handle excessive amounts of trash and debris. 2. Review of Standard Operation Procedures and Hyperion operator's training for operation of the emergency bypass channel. This ensures operators are prepared to handle a similar emergency as needed. 3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical equipment located below ground. 4. Increased public education effort to reduce trash and debris in the sewer system and into the plant. |
Violation |
U |
eSMR |
| 1097869 |
09/01/2021 |
DMON |
The monitoring of temperature is a continuous requirement of the effluent. There is no data for the month of September, 2021 due to damage of the equipment sustained during the July 11 overflow and flooding. This is a Deficient Monitoring Violation. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and why in order to prevent the occurrence of a similar incident. Assessments will include but not limited to the following: 1. Assessment of the mechanically-raked barscreens and improve the design to ensure that the barscreens are be able to handle excessive amounts of trash and debris. 2. Review of Standard Operation Procedures and Hyperion operator¿s training for operation of the emergency bypass channel. This ensures operators are prepared to handle a similar emergency as needed. 3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical equipment located below ground. 4. Increased public education effort to reduce trash and debris in the sewer system and into the plant. |
Violation |
U |
eSMR |
| 1096397 |
08/31/2021 |
CAT1 |
BOD5 @ 20 Deg. C, Percent Removal Monthly Average (Mean) limit is 85 % and reported value was 61 % at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and why in order to prevent the occurrence of a similar incident. Assessments will include but not limited to the following: 1. Assessment of the mechanically-raked barscreens and improve the design to ensure that the barscreens are be able to handle excessive amounts of trash and debris. 2. Review of Standard Operation Procedures and Hyperion operator¿s training for operation of the emergency bypass channel. This ensures operators are prepared to handle a similar emergency as needed. 3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical equipment located below ground. 4. Increased public education effort to reduce trash and debris in the sewer system and into the plant. |
Violation |
U |
eSMR |
| 1096394 |
08/31/2021 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average (Mean) limit is 105000 lb/day and reported value was 122570 lb/day at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and why in order to prevent the occurrence of a similar incident. Assessments will include but not limited to the following: 1. Assessment of the mechanically-raked barscreens and improve the design to ensure that the barscreens are be able to handle excessive amounts of trash and debris. 2. Review of Standard Operation Procedures and Hyperion operator¿s training for operation of the emergency bypass channel. This ensures operators are prepared to handle a similar emergency as needed. 3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical equipment located below ground. 4. Increased public education effort to reduce trash and debris in the sewer system and into the plant. |
Violation |
U |
eSMR |
| 1096400 |
08/31/2021 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average limit is 30 mg/L and reported value was 62 mg/L at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and why in order to prevent the occurrence of a similar incident. Assessments will include but not limited to the following: 1. Assessment of the mechanically-raked barscreens and improve the design to ensure that the barscreens are be able to handle excessive amounts of trash and debris. 2. Review of Standard Operation Procedures and Hyperion operator's training for operation of the emergency bypass channel. This ensures operators are prepared to handle a similar emergency as needed. 3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical equipment located below ground. 4. Increased public education effort to reduce trash and debris in the sewer system and into the plant. |
Violation |
U |
eSMR |
| 1096399 |
08/31/2021 |
CAT1 |
Total Suspended Solids (TSS) Monthly Average (Mean) limit is 105000 lb/day and reported value was 160210 lb/day at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and why in order to prevent the occurrence of a similar incident. Assessments will include but not limited to the following: 1. Assessment of the mechanically-raked barscreens and improve the design to ensure that the barscreens are be able to handle excessive amounts of trash and debris. 2. Review of Standard Operation Procedures and Hyperion operator¿s training for operation of the emergency bypass channel. This ensures operators are prepared to handle a similar emergency as needed. 3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical equipment located below ground. 4. Increased public education effort to reduce trash and debris in the sewer system and into the plant. |
Violation |
U |
eSMR |
| 1096395 |
08/31/2021 |
CAT1 |
Total Suspended Solids (TSS) Monthly Average (Mean) limit is 30 mg/L and reported value was 81 mg/L at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and why in order to prevent the occurrence of a similar incident. Assessments will include but not limited to the following: 1. Assessment of the mechanically-raked barscreens and improve the design to ensure that the barscreens are be able to handle excessive amounts of trash and debris. 2. Review of Standard Operation Procedures and Hyperion operator¿s training for operation of the emergency bypass channel. This ensures operators are prepared to handle a similar emergency as needed. 3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical equipment located below ground. 4. Increased public education effort to reduce trash and debris in the sewer system and into the plant. |
Violation |
U |
eSMR |
| 1096385 |
08/31/2021 |
CAT1 |
Total Suspended Solids (TSS), Percent Removal Monthly Average (Mean) limit is 85 % and reported value was 58 % at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and why in order to prevent the occurrence of a similar incident. Assessments will include but not limited to the following: 1. Assessment of the mechanically-raked barscreens and improve the design to ensure that the barscreens are be able to handle excessive amounts of trash and debris. 2. Review of Standard Operation Procedures and Hyperion operator¿s training for operation of the emergency bypass channel. This ensures operators are prepared to handle a similar emergency as needed. 3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical equipment located below ground. 4. Increased public education effort to reduce trash and debris in the sewer system and into the plant. |
Violation |
U |
eSMR |
| 1096384 |
08/28/2021 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 47 mg/L at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and why in order to prevent the occurrence of a similar incident. Assessments will include but not limited to the following: 1. Assessment of the mechanically-raked barscreens and improve the design to ensure that the barscreens are be able to handle excessive amounts of trash and debris. 2. Review of Standard Operation Procedures and Hyperion operator¿s training for operation of the emergency bypass channel. This ensures operators are prepared to handle a similar emergency as needed. 3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical equipment located below ground. 4. Increased public education effort to reduce trash and debris in the sewer system and into the plant. |
Violation |
U |
eSMR |
| 1096387 |
08/14/2021 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 45 mg/L and reported value was 52 mg/L at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and why in order to prevent the occurrence of a similar incident. Assessments will include but not limited to the following: 1. Assessment of the mechanically-raked barscreens and improve the design to ensure that the barscreens are be able to handle excessive amounts of trash and debris. 2. Review of Standard Operation Procedures and Hyperion operator¿s training for operation of the emergency bypass channel. This ensures operators are prepared to handle a similar emergency as needed. 3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical equipment located below ground. 4. Increased public education effort to reduce trash and debris in the sewer system and into the plant. |
Violation |
U |
eSMR |
| 1096383 |
08/14/2021 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 51 mg/L at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and why in order to prevent the occurrence of a similar incident. Assessments will include but not limited to the following: 1. Assessment of the mechanically-raked barscreens and improve the design to ensure that the barscreens are be able to handle excessive amounts of trash and debris. 2. Review of Standard Operation Procedures and Hyperion operator¿s training for operation of the emergency bypass channel. This ensures operators are prepared to handle a similar emergency as needed. 3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical equipment located below ground. 4. Increased public education effort to reduce trash and debris in the sewer system and into the plant. |
Violation |
U |
eSMR |
| 1096382 |
08/07/2021 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 160000 lb/day and reported value was 277910 lb/day at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and why in order to prevent the occurrence of a similar incident. Assessments will include but not limited to the following: 1. Assessment of the mechanically-raked barscreens and improve the design to ensure that the barscreens are be able to handle excessive amounts of trash and debris. 2. Review of Standard Operation Procedures and Hyperion operator¿s training for operation of the emergency bypass channel. This ensures operators are prepared to handle a similar emergency as needed. 3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical equipment located below ground. 4. Increased public education effort to reduce trash and debris in the sewer system and into the plant. |
Violation |
U |
eSMR |
| 1096393 |
08/07/2021 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 45 mg/L and reported value was 140 mg/L at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and why in order to prevent the occurrence of a similar incident. Assessments will include but not limited to the following: 1. Assessment of the mechanically-raked barscreens and improve the design to ensure that the barscreens are be able to handle excessive amounts of trash and debris. 2. Review of Standard Operation Procedures and Hyperion operator¿s training for operation of the emergency bypass channel. This ensures operators are prepared to handle a similar emergency as needed. 3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical equipment located below ground. 4. Increased public education effort to reduce trash and debris in the sewer system and into the plant. |
Violation |
U |
eSMR |
| 1096390 |
08/07/2021 |
CAT1 |
Oil and Grease Weekly Average (Mean) limit is 40 mg/L and reported value was 52 mg/L at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and why in order to prevent the occurrence of a similar incident. Assessments will include but not limited to the following: 1. Assessment of the mechanically-raked barscreens and improve the design to ensure that the barscreens are be able to handle excessive amounts of trash and debris. 2. Review of Standard Operation Procedures and Hyperion operator¿s training for operation of the emergency bypass channel. This ensures operators are prepared to handle a similar emergency as needed. 3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical equipment located below ground. 4. Increased public education effort to reduce trash and debris in the sewer system and into the plant. |
Violation |
U |
eSMR |
| 1096398 |
08/07/2021 |
CAT1 |
Settleable Solids Weekly Average (Mean) limit is 1.5 ml/L and reported value was 3.0 ml/L at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and why in order to prevent the occurrence of a similar incident. Assessments will include but not limited to the following: 1. Assessment of the mechanically-raked barscreens and improve the design to ensure that the barscreens are be able to handle excessive amounts of trash and debris. 2. Review of Standard Operation Procedures and Hyperion operator¿s training for operation of the emergency bypass channel. This ensures operators are prepared to handle a similar emergency as needed. 3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical equipment located below ground. 4. Increased public education effort to reduce trash and debris in the sewer system and into the plant. |
Violation |
U |
eSMR |
| 1096388 |
08/07/2021 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 160000 lb/day and reported value was 402840 lb/day at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and why in order to prevent the occurrence of a similar incident. Assessments will include but not limited to the following: 1. Assessment of the mechanically-raked barscreens and improve the design to ensure that the barscreens are be able to handle excessive amounts of trash and debris. 2. Review of Standard Operation Procedures and Hyperion operator¿s training for operation of the emergency bypass channel. This ensures operators are prepared to handle a similar emergency as needed. 3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical equipment located below ground. 4. Increased public education effort to reduce trash and debris in the sewer system and into the plant. |
Violation |
U |
eSMR |
| 1096396 |
08/07/2021 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 203 mg/L at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and why in order to prevent the occurrence of a similar incident. Assessments will include but not limited to the following: 1. Assessment of the mechanically-raked barscreens and improve the design to ensure that the barscreens are be able to handle excessive amounts of trash and debris. 2. Review of Standard Operation Procedures and Hyperion operator¿s training for operation of the emergency bypass channel. This ensures operators are prepared to handle a similar emergency as needed. 3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical equipment located below ground. 4. Increased public education effort to reduce trash and debris in the sewer system and into the plant. |
Violation |
U |
eSMR |
| 1096392 |
08/03/2021 |
CAT1 |
Settleable Solids Instantaneous Maximum limit is 3 ml/L and reported value was 10 ml/L at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and why in order to prevent the occurrence of a similar incident. Assessments will include but not limited to the following: 1. Assessment of the mechanically-raked barscreens and improve the design to ensure that the barscreens are be able to handle excessive amounts of trash and debris. 2. Review of Standard Operation Procedures and Hyperion operator¿s training for operation of the emergency bypass channel. This ensures operators are prepared to handle a similar emergency as needed. 3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical equipment located below ground. 4. Increased public education effort to reduce trash and debris in the sewer system and into the plant. |
Violation |
U |
eSMR |
| 1096391 |
08/02/2021 |
CAT1 |
Settleable Solids Instantaneous Maximum limit is 3 ml/L and reported value was 15.5 ml/L at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and why in order to prevent the occurrence of a similar incident. Assessments will include but not limited to the following: 1. Assessment of the mechanically-raked barscreens and improve the design to ensure that the barscreens are be able to handle excessive amounts of trash and debris. 2. Review of Standard Operation Procedures and Hyperion operator¿s training for operation of the emergency bypass channel. This ensures operators are prepared to handle a similar emergency as needed. 3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical equipment located below ground. 4. Increased public education effort to reduce trash and debris in the sewer system and into the plant. |
Violation |
U |
eSMR |
| 1096386 |
08/01/2021 |
DMON |
The monitoring of temperature is a continuous requirement for the effluent. There is no data to report for the month of August, 2021 due to damage of the equipment sustained during the July 11 overflow and flooding. This is a Deficient Monitoring violation.
|
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and why in order to prevent the occurrence of a similar incident. Assessments will include but not limited to the following: 1. Assessment of the mechanically-raked barscreens and improve the design to ensure that the barscreens are be able to handle excessive amounts of trash and debris. 2. Review of Standard Operation Procedures and Hyperion operator¿s training for operation of the emergency bypass channel. This ensures operators are prepared to handle a similar emergency as needed. 3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical equipment located below ground. 4. Increased public education effort to reduce trash and debris in the sewer system and into the plant. |
Violation |
U |
eSMR |
| 1096389 |
08/01/2021 |
CAT1 |
Settleable Solids Instantaneous Maximum limit is 3 ml/L and reported value was 7.5 ml/L at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and why in order to prevent the occurrence of a similar incident. Assessments will include but not limited to the following: 1. Assessment of the mechanically-raked barscreens and improve the design to ensure that the barscreens are be able to handle excessive amounts of trash and debris. 2. Review of Standard Operation Procedures and Hyperion operator¿s training for operation of the emergency bypass channel. This ensures operators are prepared to handle a similar emergency as needed. 3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical equipment located below ground. 4. Increased public education effort to reduce trash and debris in the sewer system and into the plant. |
Violation |
U |
eSMR |
| 1095247 |
07/31/2021 |
OEV |
Turbidity Weekly Average (Mean) limit is 100 NTU and reported value was 131 NTU at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and why in order to prevent the occurrence of a similar incident. Assessments will include but not limited to the following:
1. Assessment of the mechanically-raked barscreens and improve the design to ensure that the barscreens are be able to handle excessive amounts of trash and debris.
2. Review of Standard Operation Procedures and Hyperion operators¿ training for operation of the emergency bypass channel. This ensures operators are prepared to handle a similar emergency as needed.
3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical equipment located below ground.
4. Increased public education effort to reduce trash and debris in the sewer system and into the plant.
|
Violation |
U |
eSMR |
| 1095241 |
07/31/2021 |
CAT1 |
BOD5 @ 20 Deg. C, Percent Removal Monthly Average (Mean) limit is 85 % and reported value was 84 % at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and
why in order to prevent the occurrence of a similar incident. Assessments will include but not
limited to the following:
1. Assessment of the mechanically-raked barscreens and improve the design to ensure that
the barscreens are be able to handle excessive amounts of trash and debris.
2. Review of Standard Operation Procedures and Hyperion operators¿ training for operation
of the emergency bypass channel. This ensures operators are prepared to handle a similar
emergency as needed.
3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical
equipment located below ground.
4. Increased public education effort to reduce trash and debris in the sewer system and into the plant.
|
Violation |
U |
eSMR |
| 1095260 |
07/31/2021 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average (Mean) limit is 105000 lb/day and reported value was 258780 lb/day at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and
why in order to prevent the occurrence of a similar incident. Assessments will include but not
limited to the following:
1. Assessment of the mechanically-raked barscreens and improve the design to ensure that
the barscreens are be able to handle excessive amounts of trash and debris.
2. Review of Standard Operation Procedures and Hyperion operators¿ training for operation
of the emergency bypass channel. This ensures operators are prepared to handle a similar
emergency as needed.
3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical
equipment located below ground.
4. Increased public education effort to reduce trash and debris in the sewer system and into
the plant.
|
Violation |
U |
eSMR |
| 1095259 |
07/31/2021 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average (Mean) limit is 30 mg/L and reported value was 135 mg/L at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and
why in order to prevent the occurrence of a similar incident. Assessments will include but not
limited to the following:
1. Assessment of the mechanically-raked barscreens and improve the design to ensure that
the barscreens are be able to handle excessive amounts of trash and debris.
2. Review of Standard Operation Procedures and Hyperion operators¿ training for operation
of the emergency bypass channel. This ensures operators are prepared to handle a similar
emergency as needed.
3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical
equipment located below ground.
4. Increased public education effort to reduce trash and debris in the sewer system and into
the plant.
|
Violation |
U |
eSMR |
| 1095264 |
07/31/2021 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 160000 lb/day and reported value was 441550 lb/day at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and
why in order to prevent the occurrence of a similar incident. Assessments will include but not
limited to the following:
1. Assessment of the mechanically-raked barscreens and improve the design to ensure that
the barscreens are be able to handle excessive amounts of trash and debris.
2. Review of Standard Operation Procedures and Hyperion operators¿ training for operation
of the emergency bypass channel. This ensures operators are prepared to handle a similar
emergency as needed.
3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical
equipment located below ground.
4. Increased public education effort to reduce trash and debris in the sewer system and into
the plant.
|
Violation |
U |
eSMR |
| 1095262 |
07/31/2021 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 45.0 mg/L and reported value was 223.0 mg/L at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and
why in order to prevent the occurrence of a similar incident. Assessments will include but not
limited to the following:
1. Assessment of the mechanically-raked barscreens and improve the design to ensure that
the barscreens are be able to handle excessive amounts of trash and debris.
2. Review of Standard Operation Procedures and Hyperion operators¿ training for operation
of the emergency bypass channel. This ensures operators are prepared to handle a similar
emergency as needed.
3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical
equipment located below ground.
4. Increased public education effort to reduce trash and debris in the sewer system and into
the plant.
|
Violation |
B |
eSMR |
| 1095244 |
07/31/2021 |
CAT1 |
Oil and Grease Monthly Average (Mean) limit is 25 mg/L and reported value was 39 mg/L at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and
why in order to prevent the occurrence of a similar incident. Assessments will include but not
limited to the following:
1. Assessment of the mechanically-raked barscreens and improve the design to ensure that
the barscreens are be able to handle excessive amounts of trash and debris.
2. Review of Standard Operation Procedures and Hyperion operators¿ training for operation
of the emergency bypass channel. This ensures operators are prepared to handle a similar
emergency as needed.
3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical
equipment located below ground.
4. Increased public education effort to reduce trash and debris in the sewer system and into the plant.
|
Violation |
U |
eSMR |
| 1095248 |
07/31/2021 |
CAT1 |
Oil and Grease Weekly Average (Mean) limit is 140000 lb/day and reported value was 164660 lb/day at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and
why in order to prevent the occurrence of a similar incident. Assessments will include but not
limited to the following:
1. Assessment of the mechanically-raked barscreens and improve the design to ensure that
the barscreens are be able to handle excessive amounts of trash and debris.
2. Review of Standard Operation Procedures and Hyperion operators¿ training for operation
of the emergency bypass channel. This ensures operators are prepared to handle a similar
emergency as needed.
3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical
equipment located below ground.
4. Increased public education effort to reduce trash and debris in the sewer system and into the plant.
|
Violation |
U |
eSMR |
| 1095267 |
07/31/2021 |
CAT1 |
Oil and Grease Weekly Average (Mean) limit is 40 mg/L and reported value was 83 mg/L at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and
why in order to prevent the occurrence of a similar incident. Assessments will include but not
limited to the following:
1. Assessment of the mechanically-raked barscreens and improve the design to ensure that
the barscreens are be able to handle excessive amounts of trash and debris.
2. Review of Standard Operation Procedures and Hyperion operators¿ training for operation
of the emergency bypass channel. This ensures operators are prepared to handle a similar
emergency as needed.
3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical
equipment located below ground.
4. Increased public education effort to reduce trash and debris in the sewer system and into the plant.
|
Violation |
U |
eSMR |
| 1095258 |
07/31/2021 |
CAT1 |
Settleable Solids Instantaneous Maximum limit is 3 ml/L and reported value was 9 ml/L at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and why in order to prevent the occurrence of a similar incident. Assessments will include but not limited to the following:
1. Assessment of the mechanically-raked barscreens and improve the design to ensure that the barscreens are be able to handle excessive amounts of trash and debris.
2. Review of Standard Operation Procedures and Hyperion operators¿ training for operation of the emergency bypass channel. This ensures operators are prepared to handle a similar emergency as needed.
3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical equipment located below ground.
4. Increased public education effort to reduce trash and debris in the sewer system and into the plant.
|
Violation |
U |
eSMR |
| 1095270 |
07/31/2021 |
CAT1 |
Settleable Solids Weekly Average (Mean) limit is 1.5 ml/L and reported value was 8.2 ml/L at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and why in order to prevent the occurrence of a similar incident. Assessments will include but not limited to the following:
1. Assessment of the mechanically-raked barscreens and improve the design to ensure that the barscreens are be able to handle excessive amounts of trash and debris.
2. Review of Standard Operation Procedures and Hyperion operators¿ training for operation of the emergency bypass channel. This ensures operators are prepared to handle a similar emergency as needed.
3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical equipment located below ground.
4. Increased public education effort to reduce trash and debris in the sewer system and into the plant.
|
Violation |
U |
eSMR |
| 1095272 |
07/31/2021 |
CAT1 |
Total Suspended Solids (TSS) Monthly Average (Mean) limit is 105000 lb/day and reported value was 242050 lb/day at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and
why in order to prevent the occurrence of a similar incident. Assessments will include but not
limited to the following:
1. Assessment of the mechanically-raked barscreens and improve the design to ensure that
the barscreens are be able to handle excessive amounts of trash and debris.
2. Review of Standard Operation Procedures and Hyperion operators¿ training for operation
of the emergency bypass channel. This ensures operators are prepared to handle a similar
emergency as needed.
3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical
equipment located below ground.
4. Increased public education effort to reduce trash and debris in the sewer system and into
the plant.
|
Violation |
U |
eSMR |
| 1095249 |
07/31/2021 |
CAT1 |
Total Suspended Solids (TSS) Monthly Average (Mean) limit is 30 mg/L and reported value was 126 mg/L at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and
why in order to prevent the occurrence of a similar incident. Assessments will include but not
limited to the following:
1. Assessment of the mechanically-raked barscreens and improve the design to ensure that
the barscreens are be able to handle excessive amounts of trash and debris.
2. Review of Standard Operation Procedures and Hyperion operators¿ training for operation
of the emergency bypass channel. This ensures operators are prepared to handle a similar
emergency as needed.
3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical
equipment located below ground.
4. Increased public education effort to reduce trash and debris in the sewer system and into
the plant.
|
Violation |
U |
eSMR |
| 1095243 |
07/31/2021 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 160000 lb/day and reported value was 544420 lb/day at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and
why in order to prevent the occurrence of a similar incident. Assessments will include but not
limited to the following:
1. Assessment of the mechanically-raked barscreens and improve the design to ensure that
the barscreens are be able to handle excessive amounts of trash and debris.
2. Review of Standard Operation Procedures and Hyperion operators¿ training for operation
of the emergency bypass channel. This ensures operators are prepared to handle a similar
emergency as needed.
3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical
equipment located below ground.
4. Increased public education effort to reduce trash and debris in the sewer system and into
the plant.
|
Violation |
U |
eSMR |
| 1095234 |
07/31/2021 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 274 mg/L at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and
why in order to prevent the occurrence of a similar incident. Assessments will include but not
limited to the following:
1. Assessment of the mechanically-raked barscreens and improve the design to ensure that
the barscreens are be able to handle excessive amounts of trash and debris.
2. Review of Standard Operation Procedures and Hyperion operators¿ training for operation
of the emergency bypass channel. This ensures operators are prepared to handle a similar
emergency as needed.
3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical
equipment located below ground.
4. Increased public education effort to reduce trash and debris in the sewer system and into
the plant.
|
Violation |
U |
eSMR |
| 1095257 |
07/30/2021 |
CAT1 |
Settleable Solids Instantaneous Maximum limit is 3 ml/L and reported value was 6.5 ml/L at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and why in order to prevent the occurrence of a similar incident. Assessments will include but not limited to the following:
1. Assessment of the mechanically-raked barscreens and improve the design to ensure that the barscreens are be able to handle excessive amounts of trash and debris.
2. Review of Standard Operation Procedures and Hyperion operators¿ training for operation of the emergency bypass channel. This ensures operators are prepared to handle a similar emergency as needed.
3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical equipment located below ground.
4. Increased public education effort to reduce trash and debris in the sewer system and into the plant.
|
Violation |
U |
eSMR |
| 1095268 |
07/29/2021 |
CAT1 |
Settleable Solids Instantaneous Maximum limit is 3 ml/L and reported value was 3.5 ml/L at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and why in order to prevent the occurrence of a similar incident. Assessments will include but not limited to the following:
1. Assessment of the mechanically-raked barscreens and improve the design to ensure that the barscreens are be able to handle excessive amounts of trash and debris.
2. Review of Standard Operation Procedures and Hyperion operators¿ training for operation of the emergency bypass channel. This ensures operators are prepared to handle a similar emergency as needed.
3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical equipment located below ground.
4. Increased public education effort to reduce trash and debris in the sewer system and into the plant.
|
Violation |
U |
eSMR |
| 1095245 |
07/28/2021 |
CAT1 |
Oil and Grease Instantaneous Maximum limit is 75 mg/L and reported value was 83 mg/L at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and
why in order to prevent the occurrence of a similar incident. Assessments will include but not
limited to the following:
1. Assessment of the mechanically-raked barscreens and improve the design to ensure that
the barscreens are be able to handle excessive amounts of trash and debris.
2. Review of Standard Operation Procedures and Hyperion operators¿ training for operation
of the emergency bypass channel. This ensures operators are prepared to handle a similar
emergency as needed.
3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical
equipment located below ground.
4. Increased public education effort to reduce trash and debris in the sewer system and into the plant.
|
Violation |
U |
eSMR |
| 1095254 |
07/28/2021 |
CAT1 |
Settleable Solids Instantaneous Maximum limit is 3 ml/L and reported value was 8 ml/L at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and why in order to prevent the occurrence of a similar incident. Assessments will include but not limited to the following:
1. Assessment of the mechanically-raked barscreens and improve the design to ensure that the barscreens are be able to handle excessive amounts of trash and debris.
2. Review of Standard Operation Procedures and Hyperion operators¿ training for operation of the emergency bypass channel. This ensures operators are prepared to handle a similar emergency as needed.
3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical equipment located below ground.
4. Increased public education effort to reduce trash and debris in the sewer system and into the plant.
|
Violation |
U |
eSMR |
| 1095265 |
07/26/2021 |
CAT1 |
Settleable Solids Instantaneous Maximum limit is 3 ml/L and reported value was 18 ml/L at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and why in order to prevent the occurrence of a similar incident. Assessments will include but not limited to the following:
1. Assessment of the mechanically-raked barscreens and improve the design to ensure that the barscreens are be able to handle excessive amounts of trash and debris.
2. Review of Standard Operation Procedures and Hyperion operators¿ training for operation of the emergency bypass channel. This ensures operators are prepared to handle a similar emergency as needed.
3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical equipment located below ground.
4. Increased public education effort to reduce trash and debris in the sewer system and into the plant.
|
Violation |
U |
eSMR |
| 1095253 |
07/25/2021 |
CAT1 |
Settleable Solids Instantaneous Maximum limit is 3 ml/L and reported value was 11 ml/L at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and why in order to prevent the occurrence of a similar incident. Assessments will include but not limited to the following:
1. Assessment of the mechanically-raked barscreens and improve the design to ensure that the barscreens are be able to handle excessive amounts of trash and debris.
2. Review of Standard Operation Procedures and Hyperion operators¿ training for operation of the emergency bypass channel. This ensures operators are prepared to handle a similar emergency as needed.
3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical equipment located below ground.
4. Increased public education effort to reduce trash and debris in the sewer system and into the plant.
|
Violation |
U |
eSMR |
| 1095246 |
07/24/2021 |
OEV |
Turbidity Weekly Average (Mean) limit is 100 NTU and reported value was 117 NTU at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and why in order to prevent the occurrence of a similar incident. Assessments will include but not limited to the following:
1. Assessment of the mechanically-raked barscreens and improve the design to ensure that the barscreens are be able to handle excessive amounts of trash and debris.
2. Review of Standard Operation Procedures and Hyperion operators¿ training for operation of the emergency bypass channel. This ensures operators are prepared to handle a similar emergency as needed.
3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical equipment located below ground.
4. Increased public education effort to reduce trash and debris in the sewer system and into the plant.
|
Violation |
U |
eSMR |
| 1095263 |
07/24/2021 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 160000 lb/day and reported value was 454060 lb/day at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and
why in order to prevent the occurrence of a similar incident. Assessments will include but not
limited to the following:
1. Assessment of the mechanically-raked barscreens and improve the design to ensure that
the barscreens are be able to handle excessive amounts of trash and debris.
2. Review of Standard Operation Procedures and Hyperion operators¿ training for operation
of the emergency bypass channel. This ensures operators are prepared to handle a similar
emergency as needed.
3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical
equipment located below ground.
4. Increased public education effort to reduce trash and debris in the sewer system and into
the plant.
|
Violation |
U |
eSMR |
| 1095261 |
07/24/2021 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 45 mg/L and reported value was 232 mg/L at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and
why in order to prevent the occurrence of a similar incident. Assessments will include but not
limited to the following:
1. Assessment of the mechanically-raked barscreens and improve the design to ensure that
the barscreens are be able to handle excessive amounts of trash and debris.
2. Review of Standard Operation Procedures and Hyperion operators¿ training for operation
of the emergency bypass channel. This ensures operators are prepared to handle a similar
emergency as needed.
3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical
equipment located below ground.
4. Increased public education effort to reduce trash and debris in the sewer system and into
the plant.
|
Violation |
U |
eSMR |
| 1095266 |
07/24/2021 |
CAT1 |
Oil and Grease Weekly Average (Mean) limit is 40 mg/L and reported value was 59 mg/L at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and
why in order to prevent the occurrence of a similar incident. Assessments will include but not
limited to the following:
1. Assessment of the mechanically-raked barscreens and improve the design to ensure that
the barscreens are be able to handle excessive amounts of trash and debris.
2. Review of Standard Operation Procedures and Hyperion operators¿ training for operation
of the emergency bypass channel. This ensures operators are prepared to handle a similar
emergency as needed.
3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical
equipment located below ground.
4. Increased public education effort to reduce trash and debris in the sewer system and into the plant.
|
Violation |
U |
eSMR |
| 1095269 |
07/24/2021 |
CAT1 |
Settleable Solids Weekly Average (Mean) limit is 1.5 ml/L and reported value was 1.9 ml/L at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and why in order to prevent the occurrence of a similar incident. Assessments will include but not limited to the following:
1. Assessment of the mechanically-raked barscreens and improve the design to ensure that the barscreens are be able to handle excessive amounts of trash and debris.
2. Review of Standard Operation Procedures and Hyperion operators¿ training for operation of the emergency bypass channel. This ensures operators are prepared to handle a similar emergency as needed.
3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical equipment located below ground.
4. Increased public education effort to reduce trash and debris in the sewer system and into the plant.
|
Violation |
U |
eSMR |
| 1095242 |
07/24/2021 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 160000 lb/day and reported value was 363970 lb/day at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and
why in order to prevent the occurrence of a similar incident. Assessments will include but not
limited to the following:
1. Assessment of the mechanically-raked barscreens and improve the design to ensure that
the barscreens are be able to handle excessive amounts of trash and debris.
2. Review of Standard Operation Procedures and Hyperion operators¿ training for operation
of the emergency bypass channel. This ensures operators are prepared to handle a similar
emergency as needed.
3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical
equipment located below ground.
4. Increased public education effort to reduce trash and debris in the sewer system and into
the plant.
|
Violation |
U |
eSMR |
| 1095251 |
07/24/2021 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 186 mg/L at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and
why in order to prevent the occurrence of a similar incident. Assessments will include but not
limited to the following:
1. Assessment of the mechanically-raked barscreens and improve the design to ensure that
the barscreens are be able to handle excessive amounts of trash and debris.
2. Review of Standard Operation Procedures and Hyperion operators¿ training for operation
of the emergency bypass channel. This ensures operators are prepared to handle a similar
emergency as needed.
3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical
equipment located below ground.
4. Increased public education effort to reduce trash and debris in the sewer system and into
the plant.
|
Violation |
U |
eSMR |
| 1095252 |
07/23/2021 |
CAT1 |
Settleable Solids Instantaneous Maximum limit is 3 ml/L and reported value was 8 ml/L at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and why in order to prevent the occurrence of a similar incident. Assessments will include but not limited to the following:
1. Assessment of the mechanically-raked barscreens and improve the design to ensure that the barscreens are be able to handle excessive amounts of trash and debris.
2. Review of Standard Operation Procedures and Hyperion operators¿ training for operation of the emergency bypass channel. This ensures operators are prepared to handle a similar emergency as needed.
3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical equipment located below ground.
4. Increased public education effort to reduce trash and debris in the sewer system and into the plant.
|
Violation |
U |
eSMR |
| 1095240 |
07/17/2021 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 160000 lb/day and reported value was 220880 lb/day at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and
why in order to prevent the occurrence of a similar incident. Assessments will include but not
limited to the following:
1. Assessment of the mechanically-raked barscreens and improve the design to ensure that
the barscreens are be able to handle excessive amounts of trash and debris.
2. Review of Standard Operation Procedures and Hyperion operators¿ training for operation
of the emergency bypass channel. This ensures operators are prepared to handle a similar
emergency as needed.
3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical
equipment located below ground.
4. Increased public education effort to reduce trash and debris in the sewer system and into
the plant.
|
Violation |
U |
eSMR |
| 1095239 |
07/17/2021 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 45 mg/L and reported value was 113 mg/L at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and
why in order to prevent the occurrence of a similar incident. Assessments will include but not
limited to the following:
1. Assessment of the mechanically-raked barscreens and improve the design to ensure that
the barscreens are be able to handle excessive amounts of trash and debris.
2. Review of Standard Operation Procedures and Hyperion operators¿ training for operation
of the emergency bypass channel. This ensures operators are prepared to handle a similar
emergency as needed.
3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical
equipment located below ground.
4. Increased public education effort to reduce trash and debris in the sewer system and into
the plant.
|
Violation |
U |
eSMR |
| 1095250 |
07/17/2021 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 45 mg/L and reported value was 74 mg/L at EFF-002. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and
why in order to prevent the occurrence of a similar incident. Assessments will include but not
limited to the following:
1. Assessment of the mechanically-raked barscreens and improve the design to ensure that
the barscreens are be able to handle excessive amounts of trash and debris.
2. Review of Standard Operation Procedures and Hyperion operators¿ training for operation
of the emergency bypass channel. This ensures operators are prepared to handle a similar
emergency as needed.
3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical
equipment located below ground.
4. Increased public education effort to reduce trash and debris in the sewer system and into
the plant.
|
Violation |
U |
eSMR |
| 1095255 |
07/11/2021 |
DMON |
On July 11, 2021, an excessive amount of debris suddenly collected on the barscreens of Hyperion's Headworks Screening Facility. The barscreens were overwhelmed, causing flooding of the Treatment Plant and discharge of approximately 17 million gallons of untreated wastewater via the storm drain system to the 1-Mile Outfall. Flooding of the pipe galleries and equipment caused significant damage and degraded Hyperion's treatment processes, resulting in effluent violations throughout the month of July.
The average and maximum daily flows through the 5-Mile Outfall cannot be calculated on 7/11/2021 and 7/12/2021. Therefore, mass loadings for BOD and TSS cannot be reported. Settleable Solids and Turbidity were not sampled on 7/12/2021. Effluent temperature cannot be reported after 7/12/2021 for the month of July due to equipment damage. These are collectively a deficient monitoring violation. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and why in order to prevent the occurrence of a similar incident. Assessments will include but not limited to the following:
1. Assessment of the mechanically-raked barscreens and improve the design to ensure that the barscreens are be able to handle excessive amounts of trash and debris.
2. Review of Standard Operation Procedures and Hyperion operators¿ training for operation of the emergency bypass channel. This ensures operators are prepared to handle a similar emergency as needed.
3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical equipment located below ground.
4. Increased public education effort to reduce trash and debris in the sewer system and into the plant.
|
Violation |
U |
eSMR |
| 1095235 |
07/11/2021 |
DMON |
On July 11, 2021, an excessive amount of debris suddenly collected on the barscreens of Hyperion's Headworks Screening Facility. The barscreens were overwhelmed, causing flooding of the Treatment Plant and discharge of approximately 17 million gallons of untreated wastewater via the storm drain system to the 1-Mile Outfall. Flooding of the pipe galleries and equipment caused significant damage and degraded Hyperion's treatment processes, resulting in effluent violations throughout the month of July.
There was no wastewater flow through the 1-Mile sampling point and no sample could be collected at the legally mandated sampling point during the discharge. This is a deficient monitoring violation. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and why in order to prevent the occurrence of a similar incident. Assessments will include but not limited to the following:
1. Assessment of the mechanically-raked barscreens and improve the design to ensure that the barscreens are be able to handle excessive amounts of trash and debris.
2. Review of Standard Operation Procedures and Hyperion operators¿ training for operation of the emergency bypass channel. This ensures operators are prepared to handle a similar emergency as needed.
3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical equipment located below ground.
4. Increased public education effort to reduce trash and debris in the sewer system and into the plant.
|
Violation |
U |
eSMR |
| 1095271 |
07/11/2021 |
DMON |
On July 11, 2021, an excessive amount of debris suddenly collected on the barscreens of Hyperion's Headworks Screening Facility. The barscreens were overwhelmed, causing flooding of the Treatment Plant and discharge of approximately 17 million gallons of untreated wastewater via the storm drain system to the 1-Mile Outfall. Flooding of the pipe galleries and equipment caused significant damage and degraded Hyperion¿s treatment processes, resulting in effluent violations throughout the month of July.
No sample could be collected at the legally mandated sampling point for INF-001 on 7/12/2021. This is a deficient monitoring violation for analyses required daily: TSS and BOD. Additionally, average and maximum flows for 7/11 and 7/12 are Not Representative. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and why in order to prevent the occurrence of a similar incident. Assessments will include but not limited to the following:
1. Assessment of the mechanically-raked barscreens and improve the design to ensure that the barscreens are be able to handle excessive amounts of trash and debris.
2. Review of Standard Operation Procedures and Hyperion operators¿ training for operation of the emergency bypass channel. This ensures operators are prepared to handle a similar emergency as needed.
3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical equipment located below ground.
4. Increased public education effort to reduce trash and debris in the sewer system and into the plant.
|
Violation |
U |
eSMR |
| 1095236 |
07/11/2021 |
DMON |
On July 11, 2021, an excessive amount of debris suddenly collected on the barscreens of Hyperion¿s Headworks Screening Facility. The barscreens were overwhelmed, causing flooding of the Treatment Plant and discharge of approximately 17 million gallons of untreated wastewater via the storm drain system to the 1-Mile Outfall. Flooding of the pipe galleries and equipment caused significant damage and degraded Hyperion¿s treatment processes, resulting in effluent violations throughout the month of July.
No sample could be collected at the legally mandated sampling point for INF-002 on 7/12/2021. This is a deficient monitoring violation for analyses required daily: TSS and BOD. Additionally, average and maximum flows for 7/11 and 7/12 are Not Representative. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and why in order to prevent the occurrence of a similar incident. Assessments will include but not limited to the following:
1. Assessment of the mechanically-raked barscreens and improve the design to ensure that the barscreens are be able to handle excessive amounts of trash and debris.
2. Review of Standard Operation Procedures and Hyperion operators¿ training for operation of the emergency bypass channel. This ensures operators are prepared to handle a similar emergency as needed.
3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical equipment located below ground.
4. Increased public education effort to reduce trash and debris in the sewer system and into the plant.
|
Violation |
U |
eSMR |
| 1095256 |
07/11/2021 |
DMON |
On July 11, 2021, an excessive amount of debris suddenly collected on the barscreens of Hyperion¿s Headworks Screening Facility. The barscreens were overwhelmed, causing flooding of the Treatment Plant and discharge of approximately 17 million gallons of untreated wastewater via the storm drain system to the 1-Mile Outfall. Flooding of the pipe galleries and equipment caused significant damage and degraded Hyperion¿s treatment processes, resulting in effluent violations throughout the month of July.
No sample could be collected at the legally mandated sampling point for INF-003 on 7/12/2021. This is a deficient monitoring violation for analyses required daily: TSS and BOD. Additionally, average and maximum flows for 7/11 and 7/12 are Not Representative. |
On July 11, 2021, an excessive amount of debris suddenly collected on the barscreens of Hyperion¿s Headworks Screening Facility. The barscreens were overwhelmed, causing flooding of the Treatment Plant and discharge of approximately 17 million gallons of untreated wastewater via the storm drain system to the 1-Mile Outfall. Flooding of the pipe galleries and equipment caused significant damage and degraded Hyperion¿s treatment processes, resulting in effluent violations throughout the month of July. |
Violation |
U |
eSMR |
| 1095238 |
07/11/2021 |
DMON |
On July 11, 2021, an excessive amount of debris suddenly collected on the barscreens of Hyperion¿s Headworks Screening Facility. The barscreens were overwhelmed, causing flooding of the Treatment Plant and discharge of approximately 17 million gallons of untreated wastewater via the storm drain system to the 1-Mile Outfall. Flooding of the pipe galleries and equipment caused significant damage and degraded Hyperion¿s treatment processes, resulting in effluent violations throughout the month of July.
No sample could be collected at the legally mandated sampling point for INF-005 on 7/12/2021. This is a deficient monitoring violation for analyses required daily: TSS and BOD. Additionally, average and maximum flows for 7/11 and 7/12 are Not Representative. |
Los Angeles Sanitation and Environment will conduct further assessment to gain a complete understanding of what happened and why in order to prevent the occurrence of a similar incident. Assessments will include but not limited to the following:
1. Assessment of the mechanically-raked barscreens and improve the design to ensure that the barscreens are be able to handle excessive amounts of trash and debris.
2. Review of Standard Operation Procedures and Hyperion operators¿ training for operation of the emergency bypass channel. This ensures operators are prepared to handle a similar emergency as needed.
3. Assessment of plant facilities to mitigate the risk of flooding and damage to critical equipment located below ground.
4. Increased public education effort to reduce trash and debris in the sewer system and into the plant.
|
Violation |
U |
eSMR |
| 1096091 |
07/11/2021 |
UAUTHDISC |
Unauthorized discharge of raw sewage from HTP to Pacific Ocean from July 11, 2021 through July 12, 2021. According to 5-day and 30-day report, approximately 16.874 MG of raw sewage was discharged through Discharge Point 001; an additional 80,000 gallons of raw sewage was discharged through Discharge Point 002 after blending with HTP's normal effluent. |
|
Violation |
A |
Report |
| 1095237 |
07/10/2021 |
DMON |
On July 11, 2021, an excessive amount of debris suddenly collected on the barscreens of Hyperion¿s Headworks Screening Facility. The barscreens were overwhelmed, causing flooding of the Treatment Plant and discharge of approximately 17 million gallons of untreated wastewater via the storm drain system to the 1-Mile Outfall. Flooding of the pipe galleries and equipment caused significant damage and degraded Hyperion¿s treatment processes, resulting in effluent violations throughout the month of July.
No sample could be collected at the legally mandated sampling point for INF-004 on 7/12/2021 and the sample for 7/11/2021 was not delivered to the laboratory. This is a deficient monitoring violation for analyses required daily: TSS and BOD. Additionally, average and maximum flows for 7/11 and 7/12 are Not Representative. |
On July 11, 2021, an excessive amount of debris suddenly collected on the barscreens of Hyperion¿s Headworks Screening Facility. The barscreens were overwhelmed, causing flooding of the Treatment Plant and discharge of approximately 17 million gallons of untreated wastewater via the storm drain system to the 1-Mile Outfall. Flooding of the pipe galleries and equipment caused significant damage and degraded Hyperion¿s treatment processes, resulting in effluent violations throughout the month of July. |
Violation |
U |
eSMR |
| 1087435 |
12/03/2020 |
DMON |
On December 3, 2020, all influent BOD results indicated that no samples were added to the bottles, as there was no oxygen depletion. All five influent samples for that day were invalid due to analyst error. BOD analysis is a daily influent requirement, and this results in a deficient monitoring violation. |
Analysts were reminded to follow procedure: add one set of bottles one at a time to avoid confusion and to double check volumes of each sample. |
Violation |
U |
eSMR |
| 1083791 |
10/29/2020 |
DMON |
The ammonia sample for the Santa Monica Bay station 3305 at 30 M depth was improperly preserved and could not be analyzed. |
To prevent future occurrences, a second person will affirm the presence of the acid in the sample bottles prior to release of the sample bottles for sampling. |
Violation |
U |
eSMR |
| 1079178 |
06/14/2020 |
DMON |
The CIWS BOD sample prepared on June 15, with a calculated result on June 20, showed no oxygen depletion. This result indicated that perhaps the CIWS sample was not added to the two sample bottles in the June 15 preparation; therefore, this result was reported as ¿Analyst Error AE¿. The 5-mile BOD result on that day was 19 mg/L and in normal range. |
To avoid confusion, analysts will add samples to each set of bottles once at a time. Additionally, analysts will check all the bottles for their proper volume before running the experiment. |
Violation |
U |
eSMR |
| 1077917 |
05/05/2020 |
DMON |
The City of Los Angeles was unable to monitor water quality parameters during the April - June quarter in the Santa Monica Bay and Los Angeles Harbor. Equipment necessary for profiling and sampling was unavailable due to Coronavirus closures. See attached letter to Regional Board dated June 30 titled ¿Unable to perform quarterly offshore and harbor water quality monitoring (April ¿ June)¿. Conductivity-temperature-depth (CTD) profiler was out of service and under repair at Sea-Bird Facility in Washington State, which was shut down during the pandemic. The CTD profiler is used for both discrete and surface sampling. Without the use of a CTD for tracking and delineating the plume, surface sample collection involving ammonia and microbiological samples would not be meaningful. Additionally, EMD did not have equipment available that was capable of sampling the immediate subsurface from the deck of a marine vessel in a sterile or safe manner. |
EMD is seeking relief of this compliance requirement for the affected quarter; the CTD has since been repaired, returned to EMD, and is in service.
|
Violation |
U |
eSMR |
| 1076823 |
04/14/2020 |
DMON |
The operators that collected the Oil and Grease (OAG) sample on April 14 for COS (INF-003) did not collect the sample correctly. The sample was too "clean¿. The OAG results were either very low or Not Detected (ND) which is unusual for influent samples. Therefore, the results were reported as Not Representative (NR). It is suspected that the line was not flushed long enough when the sample was collected. |
Per our prior procedures, we don't analyze the sample and we notify plant staff to remind them of proper sampling protocol. |
Violation |
U |
eSMR |
| 1073902 |
02/01/2020 |
DMON |
All influent samples and 5-mile effluent with the sampling date February 1st, 2020 were reported as Analyst Error (AE) for BOD analysis. This issue continues from January 31. This is due to the BOD test failure, as all the samples were depleted after 5 days of incubation; therefore no results were obtained on February 5th, 2020. Corresponding TSS from February 1st, 2020 were normal for all samples, and there were no exceedances. Process Control Laboratory is still troubleshooting and DI water contamination is suspected. |
The laboratory started using purified DI water for BOD analysis since February 4th, and observed improved lab results since February 9th. |
Violation |
B |
eSMR |
| 1072641 |
01/31/2020 |
DMON |
All the influent samples and 5-mile efluent with the sampling date January 31 and February 1, 2020 were reported as Analyst Error (AE) for BOD analysis. This is due to the BOD test failure, as all the samples were depleted after 5 days of incubation; therefore no results were obtained on February 5th, 2020. Process Control Laboratory is still troubleshooting and we suspect it¿s the DI water contamination. Corresponding TSS from January 31, 2020 were normal for all samples, there were no exceedance. |
The laboratory started using purified DI water for BOD analysis since February 4th, and we observed improved lab results since February 9th. |
Violation |
U |
eSMR |
| 1072647 |
12/23/2019 |
DMON |
On December 23th, five influent and one effluent total suspended solids composite samples were reported as ¿Analyst Error (AE)¿. The analyst lost the dry weights of those samples and data could not be recovered from LIMS. Therefore, suspended solids could not be calculated from dry weight. Loading on that day could not be calculated. The plant was in normal operation at the time and effluent suspended solids from the previous and subsequent day were 21 mg/L and 20 mg/L, respectively. The monthly average was 18 mg/L and in compliance. |
Analyst was counseled and advised on the proper standard operational procedure. |
Violation |
U |
eSMR |
| 1071570 |
12/23/2019 |
DMON |
On December 23th, five influent and one effluent total suspended solids composite samples were reported as ¿Analyst Error (AE)¿. The analyst lost the dry weights of those samples and data could not be recovered from LIMS. Therefore, suspended solids could not be calculated from dry weight. Loading on that day could not be calculated. The plant was in normal operation at the time and effluent suspended solids from the previous and subsequent day were 21 mg/L and 20 mg/L, respectively. The monthly average was 18 mg/L and in compliance. |
Analyst was counseled and advised on the proper standard operational procedure. |
Violation |
U |
eSMR |
| 1072650 |
12/23/2019 |
DMON |
On December 23th, five influent and one effluent total suspended solids composite samples were reported as ¿Analyst Error (AE)¿. The analyst lost the dry weights of those samples and data could not be recovered from LIMS. Therefore, suspended solids could not be calculated from dry weight. Loading on that day could not be calculated. The plant was in normal operation at the time and effluent suspended solids from the previous and subsequent day were 21 mg/L and 20 mg/L, respectively. The monthly average was 18 mg/L and in compliance. |
Analyst was counseled and advised on the proper standard operational procedure. |
Violation |
U |
eSMR |
| 1070580 |
11/19/2019 |
DMON |
On November 20th, during the initial set-up of the November 19th INF-004(NOS) influent composite sample for BOD, the analyst didn''t add the NOS sample to the BOD bottle, which caused the 5-day BOD result to be as low as a method blank. The BOD result was reported as Analyst Error (AE). The 5-mile effluent (EFF-002) BOD result was 17 mg/l and in normal range. |
The analyst was consulted and was advised to prevent this from happening in the future. |
Violation |
B |
eSMR |
| 1072648 |
11/19/2019 |
DMON |
On November 20th, during the initial set-up of the November 19th INF-004(NOS) influent composite sample for BOD, the analyst didn't add the actual NOS sample to the BOD bottle, which caused the 5-day BOD result to be as low as the method blank. The BOD result was reported as Analyst Error (AE). The 5-mile effluent (EFF-002) BOD result was 17 mg/L and in normal range. |
The analyst was counseled and advised to prevent this from happening in the future. |
Violation |
U |
eSMR |
| 1072654 |
11/19/2019 |
DMON |
On November 20th, during the initial set-up of the November 19th INF-004(NOS) influent composite sample for BOD, the analyst didn't add the actual NOS sample to the BOD bottle, which caused the 5-day BOD result to be as low as the method blank. The BOD result was reported as Analyst Error (AE). The 5-mile effluent (EFF-002) BOD result was 17 mg/L and in normal range. |
The analyst was counseled and advised to prevent this from happening in the future. |
Violation |
U |
eSMR |
| 1072646 |
11/03/2019 |
DMON |
At the end of November, Wet Chemistry section received a large influx of storm-water samples from HTPWRP, LAGWRP, DCTWRP, and Watershed Protection Division (WPD). Because these are ¿rush¿ samples, the analysts analyzed these first. In doing so, the sample dates of the samples collected in early November were overlooked and their holding times were exceeded. November 3rd Inf-003 (COS) oil and grease sample was analyzed out of holding time due to this human error. This sample was accidentally stored in Wet Chemistry's back-up refrigerator and was noticed by another analyst near the expiration date of the sample. The sample was immediately analyzed once the error was realized. Unfortunately, the error was caught late and the result is being reported as ¿Analyst Error (AE)¿. All of the rest of 3 weekly results are ¿Not Detected (ND)¿ or ¿Detected but Not Quantified (DNQ)¿; therefore, the monthly median of this month is ND and in compliance of permit limit 10 mg/L. |
Staff have been informed to pay close attention to sample collection dates on sample bottles and to always analyze the oldest samples first. Staff have also been given instructions to notify the supervisor of any samples that may be close to holding time expiration. In doing so, the supervisor will shift staff schedules to avoid having any samples analyzed past holding time. |
Violation |
U |
eSMR |
| 1072649 |
11/03/2019 |
DMON |
At the end of November, Wet Chemistry section received a large influx of storm-water samples from HTPWRP, LAGWRP, DCTWRP, and Watershed Protection Division (WPD). Because these are ¿rush¿ samples, the analysts analyzed these first. In doing so, the sample dates of the samples collected in early November were overlooked and their holding times were exceeded. November 3rd Inf-003 (COS) oil and grease sample was analyzed out of holding time due to this human error. This sample was accidentally stored in Wet Chemistry's back-up refrigerator and was noticed by another analyst near the expiration date of the sample. The sample was immediately analyzed once the error was realized. Unfortunately, the error was caught late and the result is being reported as ¿Analyst Error (AE)¿. All of the rest of 3 weekly results are ¿Not Detected (ND)¿ or ¿Detected but Not Quantified (DNQ)¿; therefore, the monthly median of this month is ND and in compliance of permit limit 10 mg/L. Staff have been informed to pay close attention to sample collection dates on sample bottles and to always analyze the oldest samples first. |
Staff have also been given instructions to notify the supervisor of any samples that may be close to holding time expiration. In doing so, the supervisor will shift staff schedules to avoid having any samples analyzed past holding time. |
Violation |
U |
eSMR |
| 1070579 |
11/03/2019 |
DMON |
November 3rd Inf-003 (COS) oil and grease sample was analyzed out of holding time due to human error. This sample was accidentally stored in Wet Chemistry''s back-up refrigerator and was noticed by another analyst near the expiration date of the sample. We analyzed the sample immediately once the error was realized. Unfortunately, the error was caught late and the result is being reported as ¿Analyst Error (AE)¿. All of the rest of 3 weekly results are ¿Not Detected (ND)¿ or ¿Detected but Not Quantified (DNQ)¿; therefore, the monthly median of this month is ND and in compliance of permit limit 10 mg/L. |
We will improve sample scheduling to prevent future occurrences. |
Violation |
B |
eSMR |
| 1072653 |
10/30/2019 |
DMON |
On October 30, 2019 5-mile effluent weekly DO was not performed because the analyst forgot to analyze DO. Other parameters, such as BOD, suspended solids, pH, and temperature, were normal on that day. |
Importance of the analyses had been discussed with the analyst and the analyst was reminded to avoid this lapse in the future. |
Violation |
U |
eSMR |
| 1072645 |
10/30/2019 |
DMON |
On October 30, 2019 5-mile effluent weekly DO was not performed because the analyst forgot to analyze DO. Other parameters, such as BOD, suspended solids, pH, and temperature, were normal on that day. |
Importance of the analyses had been discussed with the analyst and the analyst was reminded to avoid this lapse in the future. |
Violation |
U |
eSMR |
| 1068481 |
10/30/2019 |
DMON |
On October 30, 5 mile weekly dissolved oxygen (DO) was not performed because analyst forget to analyze DO of this sample.. Others parameters are normal, such as BOD, suspended solids, pH, and temperature on that day. |
Importance of the analyses had been discussed with the analyst and analyst was reminded to avoid this happening in the future.
|
Violation |
U |
eSMR |
| 1063539 |
06/18/2019 |
DMON |
The daily Influent NOS (INF-004) sample on June 18 was analyzed for BOD. The BOD result was extremely low. After discussion with the analyst, it was suspected that the sample was not properly prepared causing the abnormal result. The lab reported the result as an analyst error (AE). BOD is a daily requirement for INF-004; this AE resulted in a deficient monitoring violation. |
The analyst was consulted on BOD sample preparation in order to prevent recurrence. |
Violation |
U |
eSMR |
| 1072652 |
06/18/2019 |
DMON |
The daily Influent NOS (INF-004) sample on June 18 was analyzed for biochemical oxygen demand (BOD). The BOD result was extremely low. After discussion with the analyst, it was suspected that the sample was not properly prepared causing the abnormal result. The lab reported the result as AE. BOD is a daily requirement for INF-004; this AE resulted in a deficient monitoring violation. |
The analyst was counseled on BOD sample preparation in order to prevent recurrence. |
Violation |
U |
eSMR |
| 1072644 |
06/18/2019 |
DMON |
The daily Influent NOS (INF-004) sample on June 18 was analyzed for biochemical oxygen demand (BOD). The BOD result was extremely low. After discussion with the analyst, it was suspected that the sample was not properly prepared causing the abnormal result. The lab reported the result as AE. BOD is a daily requirement for INF-004; this AE resulted in a deficient monitoring violation. |
The analyst was counseled on BOD sample preparation in order to prevent recurrence. |
Violation |
U |
eSMR |
| 1062071 |
05/18/2019 |
DMON |
The weekly 5-Mile grab sample on May 16 was analyzed for dissolved oxygen (DO), due to a malfunction of the DO probe, the analyst tried multiple times to achieve a stabilized reading. The analyst continued trying to achieve a stabilized reading for three hours. The lab reported the result as an analyst error (AE). DO is a weekly requirement for the effluent, this AE resulted in a deficient monitoring violation for the week of May12-18. |
The analyst was retrained on replacing the membrane and calibrating the DO probe in order to prevent recurrence when the DO probe malfunctions. |
Violation |
U |
eSMR |
| 1072651 |
05/16/2019 |
DMON |
The weekly 5-Mile grab sample on May 16 was analyzed for dissolved oxygen (DO), but due to a malfunction of the DO probe, the analyst could not achieve a stabilized reading. The analyst continued trying to achieve a stabilized reading for three hours without success. The lab reported the result as an analyst error (AE). DO is a weekly requirement for the effluent, this AE resulted in a deficient monitoring violation. |
The analyst was retrained on replacing the membrane and calibrating the DO probe in order to prevent recurrence when the DO probe malfunctions. |
Violation |
U |
eSMR |
| 1072643 |
05/16/2019 |
DMON |
The weekly 5-Mile grab sample on May 16 was analyzed for dissolved oxygen (DO), but due to a malfunction of the DO probe, the analyst could not achieve a stabilized reading. The analyst continued trying to achieve a stabilized reading for three hours without success. The lab reported the result as an analyst error (AE). DO is a weekly requirement for the effluent, this AE resulted in a deficient monitoring violation. |
The analyst was retrained on replacing the membrane and calibrating the DO probe in order to prevent recurrence when the DO probe malfunctions. |
Violation |
U |
eSMR |
|
Report displays most recent five years of violations. Refer to the Interactive Violation Report for more data.
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