Violation ID |
Occurred Date |
Violation Type |
(-) Violation Description |
Corrective Action |
Status |
Classification |
Source |
1116630 |
01/09/2023 |
OEV |
pH Instantaneous Maximum limit is 9.0 SU and reported value was 9.23 SU at INT-001A. |
Removal of excess algae in retention basin. |
Violation |
B |
eSMR |
1116631 |
01/06/2023 |
OEV |
pH Instantaneous Maximum limit is 9.0 SU and reported value was 9.16 SU at INT-001A. |
Retention basin skimmed to remove excess algae. |
Violation |
B |
eSMR |
1125277 |
01/04/2023 |
OEV |
pH Instantaneous Maximum limit is 9.0 SU and reported value was 9.39 SU at INT-001A. |
|
Violation |
B |
Report |
1116634 |
01/04/2023 |
OEV |
pH Instantaneous Maximum limit is 9.0 SU and reported value was 9.43 SU at INT-001A. |
Skimmed retention pond for excess algae. |
Violation |
B |
eSMR |
1116633 |
01/03/2023 |
OEV |
pH Instantaneous Maximum limit is 9.0 SU and reported value was 9.47 SU at INT-001A. |
Skimmed basin for excess algae growth. |
Violation |
B |
eSMR |
1125276 |
01/03/2023 |
OEV |
pH Instantaneous Maximum limit is 9.0 SU and reported value was 9.48 SU at INT-001A. |
|
Violation |
B |
Report |
1116632 |
01/02/2023 |
OEV |
pH Instantaneous Maximum limit is 9.0 SU and reported value was 9.55 SU at INT-001A. |
Skimmed basin for excess algae. |
Violation |
B |
eSMR |
1125275 |
01/02/2023 |
OEV |
pH Instantaneous Maximum limit is 9.0 SU and reported value was 9.56 SU at INT-001A. |
|
Violation |
B |
Report |
1102639 |
12/14/2021 |
DMON |
Missing cyanide |
|
Violation |
B |
Report |
1102640 |
12/14/2021 |
DMON |
Missing cyanide |
|
Violation |
B |
Report |
1102636 |
12/02/2021 |
DMON |
Missing 1,1,2-trichloroethane, antimony, beryllium, and thallium |
|
Violation |
B |
Report |
1102637 |
12/02/2021 |
DMON |
Missing 1,1,2-trichloroethane, antimony, beryllium, and thallium |
|
Violation |
B |
Report |
1085710 |
12/31/2020 |
DMON |
BOD missing for O-48 |
|
Violation |
B |
Report |
1085711 |
12/31/2020 |
DMON |
BOD missing for O-84 |
|
Violation |
B |
Report |
1080601 |
08/06/2020 |
OEV |
pH Instantaneous Maximum limit is 9.0 SU and reported value was 9.24 SU at INT-001A. |
In August 2020 the monthly retention basin pH sample exceeded the upper pH limit (pH 9.0). The higher pH is likely attributed too warmer temperatures and algae blooms within the retention basin. Ongoing aeration and bacteria addition are routinely preformed to mitigate high pH level and TSS. |
Violation |
B |
eSMR |
1080602 |
08/03/2020 |
DMON |
In addition, on August 3, 2020 the pH for EFF-003 exceeded its hold time of fifteen (15) minutes. The EFF-003 sample and duplicate s were analyzed within eighteen (18) and seventeen (17) minutes of the collection time, respectively. |
The importance of the hold time was communicated during our annual NPDES training and the individual who had made the mistake during monitoring is no longer with AES. The responsibility of monitoring the outfall and retention basin samples has been transferred back to the lab technician. |
Violation |
B |
eSMR |
1073511 |
01/10/2020 |
DMON |
No pH was taken from outfall 002 during the 2nd week. of January. |
Re-training of the operators and Env coordinator |
Violation |
B |
eSMR |
1070138 |
11/24/2019 |
DMON |
pH was not collected the week of November 24th and the circulators had operated. |
Operators were informed of the missed pH and will be retrained on the importance of capturing a sample when the circulators are operating. |
Violation |
B |
eSMR |
1070137 |
11/20/2019 |
CAT1 |
Total Suspended Solids (TSS) Maximum Daily (MDEL) limit is 385 mg/L and reported value was 430 mg/L at O-48. |
The work has been completed. No additional action is necessary. |
Violation |
B |
eSMR |
1066060 |
07/08/2019 |
OEV |
pH Monthly Average limit is 9 SU and reported value was 9.45 SU at INT-001A. |
In the month of July, AES installed additional aeration to the basin after it had proven to be an effective control at Redondo. Its still early to determine if this engineering control will help mitigate the algae growth at Alamitos during the hot summer months but so far we have seen an improvement during the rest of the third quarter. |
Violation |
B |
eSMR |
1065110 |
06/30/2019 |
DMON |
2Q19 did not monitor for pH on the actual date of discharge. (from INT-002) |
|
Violation |
B |
Report |
1065114 |
06/30/2019 |
DMON |
2Q19 report did not monitor for pH on actual discharge date. (INT-001A). |
|
Violation |
B |
Report |
Report displays most recent five years of violations. Refer to the Interactive Violation Report for more data.
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