Violation ID |
Occurred Date |
Violation Type |
(-) Violation Description |
Corrective Action |
Status |
Classification |
Source |
1130043 |
06/10/2024 |
OEV |
pH Daily Maximum limit is 8.5 SU and reported value was 8.8 SU at EFF-001. |
Sterling investigated cause of potential exceedance and continues to implement best management and good housekeeping practices. |
Violation |
B |
eSMR |
1134346 |
03/11/2024 |
OEV |
pH Instantaneous Maximum limit is 8.5 SU and reported value was 8.69 SU at EFF-001. |
|
Violation |
B |
Report |
1126354 |
01/08/2024 |
CTOX |
Chronic Toxicity-Fathead Minnow-Survival 1-Hour Average (Mean) limit is 0 % effect and reported value was 100 % effect at EFF-001. |
The wastewater treatment system's canister media was replaced and the filters were rinsed. |
Violation |
U |
eSMR |
1123483 |
11/30/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average limit is 20 mg/L and reported value was 32 mg/L at EFF-001. |
Sterling continues to evaluate wastewater generating activities with the intent of identifying the potential cause of the elevated BOD concentrations. Follow up sampling was conducted on December 8,2023 and December 15, 2023. Both samples were compliant with the permit limits. |
Violation |
B |
eSMR |
1123480 |
11/06/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Daily Maximum limit is 30 mg/L and reported value was 32 mg/L at EFF-001. |
Sterling continues to evaluate wastewater generating activities with the intent of identifying the potential cause of the elevated BOD concentrations. Follow up sampling was conducted on December 8,2023 and December 15, 2023. Both samples were compliant with the permit limits. |
Violation |
B |
eSMR |
1123484 |
10/31/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average limit is 20.0 mg/L and reported value was 22.0 mg/L at EFF-001. |
This was a re-sample. Sterling continues to evaluate wastewater generating activities with the intent of identifying the potential cause of the elevated BOD concentrations. Follow up sampling was conducted. |
Violation |
B |
eSMR |
1134343 |
10/05/2023 |
OEV |
Temperature Daily Maximum limit is 80.0 Degrees F and reported value was 81.5 Degrees F at EFF-001. |
|
Violation |
B |
Report |
1121593 |
09/30/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average limit is 20 mg/L and reported value was 26 mg/L at EFF-001. |
Sterling continues to evaluate wastewater generating
activities with the intent of identifying the potential
cause of the elevated BOD concentrations. Follow up
sampling was conducted. |
Violation |
B |
eSMR |
1121582 |
09/07/2023 |
OEV |
Temperature Daily Maximum limit is 80 Degrees F and reported value was 83.84 Degrees F at EFF-001. |
Sterling conducted investigation into temperature and continues to implement best management and good housekeeping practices. |
Violation |
B |
eSMR |
1121591 |
08/31/2023 |
CAT1 |
Ammonia, Total (as N) Monthly Average limit is 0.62 mg/L and reported value was 1.04 mg/L at EFF-001. |
Sterling continues to implement best management and
good housekeeping practices, including limiting
landscaping activities which are the most likely
contributor to increased ammonia nitrogen levels. |
Violation |
B |
eSMR |
1121588 |
08/10/2023 |
CAT1 |
Ammonia, Total (as N) Daily Maximum limit is 1.24 mg/L and reported value was 1.3 mg/L at EFF-001. |
Sterling continues to implement best management and
good housekeeping practices, including limiting
landscaping activities which are the most likely
contributor to increased ammonia nitrogen levels. |
Violation |
B |
eSMR |
1121586 |
08/03/2023 |
CAT1 |
Ammonia, Total (as N) Daily Maximum limit is 1.24 mg/L and reported value was 1.6 mg/L at EFF-001. |
Sterling continues to implement best management and
good housekeeping practices, including limiting
landscaping activities which are the most likely
contributor to increased ammonia nitrogen levels. |
Violation |
B |
eSMR |
1121584 |
07/31/2023 |
CAT1 |
Ammonia, Total (as N) Monthly Average limit is 0.62 mg/L and reported value was 0.835 mg/L at EFF-001. |
Sterling continues to implement best management and
good housekeeping practices, including limiting
landscaping activities which are the most likely
contributor to increased ammonia nitrogen levels. |
Violation |
B |
eSMR |
1118869 |
06/30/2023 |
CAT1 |
Ammonia, Total (as N) Monthly Average limit is 0.62 mg/L and reported value was 0.64 mg/L at EFF-001. |
Sterling continues to implement best management and good housekeeping practices, including limiting landscaping activities which are the most likely contributor to increased ammonia nitrogen levels. |
Violation |
B |
eSMR |
1118865 |
05/31/2023 |
CAT1 |
Ammonia, Total (as N) Monthly Average limit is 0.62 mg/L and reported value was 1.25 mg/L at EFF-001. |
Sterling continues to implement best management and good housekeeping practices, including limiting landscaping activities which are the most likely contributor to increased ammonia nitrogen levels. |
Violation |
B |
eSMR |
1118862 |
05/31/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average limit is 20.0 mg/L and reported value was 38.3 mg/L at EFF-001. |
Sterling continues to evaluate wastewater generating activities with the intent of identifying the potential cause of the elevated BOD concentrations. Follow up sampling was conducted. |
Violation |
B |
eSMR |
1118867 |
05/05/2023 |
CAT1 |
Ammonia, Total (as N) Daily Maximum limit is 1.24 mg/L and reported value was 1.3 mg/L at EFF-001. |
Sterling continues to implement best management and good housekeeping practices, including limiting landscaping activities which are the most likely contributor to increased ammonia nitrogen levels. |
Violation |
B |
eSMR |
1118860 |
05/05/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Daily Maximum limit is 30 mg/L and reported value was 36 mg/L at EFF-001. |
Sterling continues to evaluate wastewater generating activities with the intent of identifying the potential cause of the elevated BOD concentrations. Follow up sampling was conducted. |
Violation |
B |
eSMR |
1118861 |
05/04/2023 |
CAT1 |
Ammonia, Total (as N) Daily Maximum limit is 1.24 mg/L and reported value was 1.3 mg/L at EFF-001. |
Sterling continues to implement best management and good housekeeping practices, including limiting landscaping activities which are the most likely contributor to increased ammonia nitrogen levels. |
Violation |
B |
eSMR |
1118871 |
05/04/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Daily Maximum limit is 30 mg/L and reported value was 100 mg/L at EFF-001. |
Sterling continues to evaluate wastewater generating activities with the intent of identifying the potential cause of the elevated BOD concentrations. Follow up sampling was conducted. |
Violation |
B |
eSMR |
1116646 |
05/01/2023 |
LREP |
Once Only OneTime ( TECHRPT ) (TRE Workplan) report for 2021/12/09 (2561982) was due on 30-APR-23 |
|
Violation |
B |
Report |
1118859 |
04/30/2023 |
CAT1 |
Ammonia, Total (as N) Monthly Average limit is 0.62 mg/L and reported value was 0.91 mg/L at EFF-001. |
Sterling continues to implement best management and good housekeeping practices, including limiting landscaping activities which are the most likely contributor to increased ammonia nitrogen levels. |
Violation |
B |
eSMR |
1115882 |
03/31/2023 |
CAT1 |
Ammonia, Total (as N) Monthly Average limit is 0.62 mg/L and reported value was 1.4 mg/L at EFF-001. |
Sterling will monitor landscaping activities to prevent them from contributing to ammonia nitrogen levels in wastewater. |
Violation |
B |
eSMR |
1115886 |
03/31/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average limit is 20.0 mg/L and reported value was 29.0 mg/L at EFF-001. |
Sterling continues to evaluate wastewater generating activities with the intent of identifying the potential cause of the elevated BOD concentrations. Follow up sampling was conducted. |
Violation |
B |
eSMR |
1115887 |
03/30/2023 |
CAT1 |
Ammonia, Total (as N) Daily Maximum limit is 1.24 mg/L and reported value was 1.4 mg/L at EFF-001. |
Sterling will monitor landscaping activities to prevent them from contributing to ammonia nitrogen levels in wastewater. |
Violation |
B |
eSMR |
1115885 |
03/21/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Daily Maximum limit is 30 mg/L and reported value was 58 mg/L at EFF-001. |
Sterling continues to evaluate wastewater generating activities with the intent of identifying the potential cause of the elevated BOD concentrations. Follow up sampling was conducted. |
Violation |
B |
eSMR |
1115884 |
02/28/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average limit is 20.0 mg/L and reported value was 36.5 mg/L at EFF-001. |
Sterling continues to evaluate wastewater generating activities with the intent of identifying the potential cause of the elevated BOD concentrations. Follow up sampling was conducted. |
Violation |
B |
eSMR |
1115881 |
02/03/2023 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Daily Maximum limit is 30 mg/L and reported value was 44 mg/L at EFF-001. |
Sterling continues to evaluate wastewater generating activities with the intent of identifying the potential cause of elevated BOD concentrations. Follow up sampling was conducted. |
Violation |
B |
eSMR |
1112945 |
11/30/2022 |
CAT1 |
Ammonia, Total (as N) Monthly Average limit is 0.62 mg/L and reported value was 0.99 mg/L at EFF-001. |
Sterling Ambassador Towers is in the process of performing cleaning and maintenance on the treatment system. |
Violation |
B |
eSMR |
1114838 |
09/30/2022 |
Deficient Reporting |
3Q2022 deficient reporting violation: Ammonia Nitrogen, Total (as N) not sampled quarterly for the 3rd Quarter 2022. |
|
Violation |
B |
Report |
1114783 |
08/31/2022 |
OEV |
Turbidity Monthly Average limit is 50 NTU and reported value was 64 NTU at EFF-001. |
|
Violation |
B |
Report |
1114784 |
08/31/2022 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average limit is 20.0 mg/L and reported value was 360 mg/L at EFF-001. |
|
Violation |
B |
Report |
1114785 |
08/05/2022 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Daily Maximum limit is 30 mg/L and reported value was 360 mg/L at EFF-001. |
|
Violation |
B |
Report |
1116616 |
05/31/2022 |
CAT1 |
Ammonia, Total (as N) Monthly Average limit is 0.62 mg/L and reported value was 1.8 mg/L at EFF-001. |
|
Violation |
B |
Report |
1114787 |
05/31/2022 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average limit is 20 mg/L and reported value was 37 mg/L at EFF-001. |
|
Violation |
B |
Report |
1114786 |
05/06/2022 |
CAT1 |
Ammonia, Total (as N) Daily Maximum limit is 1.24 mg/L and reported value was 1.8 mg/L at EFF-001. |
|
Violation |
B |
Report |
1114788 |
05/06/2022 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Daily Maximum limit is 30 mg/L and reported value was 37 mg/L at EFF-001. |
|
Violation |
B |
Report |
1114789 |
02/28/2022 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Daily Maximum limit is 30 mg/L and reported value was 580 mg/L at EFF-001. |
|
Violation |
B |
Report |
1103775 |
02/28/2022 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average (Mean) limit is 20 mg/L and reported value was 302.5 mg/L at EFF-001. |
Sterling Towers is in the process of performing cleaning and maintenance on the treatment system. |
Violation |
B |
eSMR |
1102133 |
01/31/2022 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average (Mean) limit is 20 mg/L and reported value was 51 mg/L at EFF-001. |
A Toxicity Reduction Evaluation (TRE) is currently in progress to identify possible sources of sulfides and/or bacteria present onsite. It is anticipated that corrective actions made to reduce sulfide concentrations resulting in chronic toxicity issues will also reduce BOD concentrations in future effluent discharges. Sterling Ambassador Towers will provide a corrective action plan once potential sources and treatments have been identified. |
Violation |
B |
eSMR |
1102136 |
01/24/2022 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Daily Maximum limit is 30 mg/L and reported value was 51 mg/L at EFF-001. |
A Toxicity Reduction Evaluation (TRE) is currently in progress to identify possible sources of sulfides and/or bacteria present onsite. It is anticipated that corrective actions made to reduce sulfide concentrations resulting in chronic toxicity issues will also reduce BOD concentrations in future effluent discharges. Sterling Ambassador Towers will provide a corrective action plan once potential sources and treatments have been identified. |
Violation |
B |
eSMR |
1102134 |
01/24/2022 |
CTOX |
Chronic Toxicity-Fathead Minnow-Growth 1-Hour Average (Mean) limit is 50 % survival and reported value was 15 % survival at EFF-001. |
Enthalpy Analytical is currently conducting a Toxicity Identification Evaluation (TIE) as a result of the failed chronic toxicity test in December 2019 and subsequent additional failed tests in April 2020 and January 2022. While the TIE is still in progress, it has been identified that high sulfide concentrations in the effluent may be the cause of toxicity. Sterling Ambassador Towers is evaluating toxicity reduction methods and will submit a Toxicity Reduction Evaluation (TRE) once complete. |
Violation |
U |
eSMR |
1102135 |
01/24/2022 |
CTOX |
Chronic Toxicity-Fathead Minnow-Survival Other limit is 0 Pass/Fail (Pass = 0, Fail = 1) and reported value was 1 Pass/Fail (Pass = 0, Fail = 1) at EFF-001. |
Enthalpy Analytical is currently conducting a Toxicity Identification Evaluation (TIE) as a result of the failed chronic toxicity test in December 2019 and subsequent additional failed tests in April 2020 and January 2022. While the TIE is still in progress, it has been identified that high sulfide concentrations in the effluent may be the cause of toxicity. Sterling Ambassador Towers is evaluating toxicity reduction methods and will submit a Toxicity Reduction Evaluation (TRE) once complete. |
Violation |
U |
eSMR |
1095710 |
08/31/2021 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average (Mean) limit is 20 mg/L and reported value was 22.2 mg/L at EFF-001. |
After the results were received from initial sampling conducted on 6 August 2021, four additional sampling events were conducted on 24 August, 25 August, 26 August, and 27 August 2021. Results from the five sampling events during the month of August indicate an average concentration of 22.2 mg/L, apparently exceeding the average monthly effluent limitation of 20 mg/L. Sterling Ambassador Towers is currently evaluating potential sources contributing to the observed BOD concentrations and will provide a corrective action plan to the Water Board once the source has been identified. |
Violation |
B |
eSMR |
1092712 |
05/31/2021 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average (Mean) limit is 20.0 mg/L and reported value was 106.6 mg/L at EFF-001. |
After the results from the initial sampling on 7 May 2021 were received, four additional sampling events were conducted on 25 May, 26 May, 27 May, and 28 May 2021. Results from the five sampling events during the month of May indicate an average concentration of 106.6 mg/L, apparently exceeding the average monthly effluent limitation of 20 mg/L. It is believed that the monthly average was heavily influenced by the high initial result of 460 mg/L which is not expected to be representative of typical BOD concentrations present in effluent discharging from the site. Sterling Ambassador Towers is currently evaluating potential sources contributing to the observed BOD concentrations and will provide a corrective action plan to the Water Board once the source has been identified. |
Violation |
B |
eSMR |
1092713 |
05/07/2021 |
OEV |
pH Instantaneous Minimum limit is 6.5 SU and reported value was 6.2 SU at EFF-001. |
No additional sampling was conducted for pH during the second quarter. The pH result from sampling conducted 7 May 2021 is not believed to be representative of typical pH values observed in effluent discharging offsite. Sterling Ambassador Towers will continue to monitor pH results from future sampling events. |
Violation |
B |
eSMR |
1092711 |
05/07/2021 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Maximum Daily (MDEL) limit is 30 mg/L and reported value was 460 mg/L at EFF-001. |
After the results from the initial sampling event on 7 May 2021 were received, four additional sampling events were conducted during the month of May. BOD results from all four additional sampling events did not exceed the 30 mg/L maximum daily effluent limitation. |
Violation |
B |
eSMR |
1089638 |
02/28/2021 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average limit is 20 mg/L and reported value was 36.75 mg/L at EFF-001. |
After the results from the initial sampling on 5 February 2021 were received, four additional sampling events were conducted on 24 February, 25 February, 26 February, and 1 March 2021. Note that a fourth sampling event was not scheduled during the month of February as the laboratory does not collect or receive samples over the weekend. Results from the four sampling events during the month of February 2021 indicate an average concentration of 36.75 mg/L, apparently exceeding the average monthly effluent limitation of 20 mg/L. Results from the 1 March 2021 sampling event have not yet been released from the laboratory. Once available, the results will be reviewed to determine if compliance with the average monthly effluent limitation was established in the month of March. If it appears that the 1 March 2021 results remain out of compliance, sampling frequency for BOD will be increased to weekly until compliance with the average monthly effluent limitation is demonstrated. |
Violation |
B |
eSMR |
1089639 |
02/05/2021 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Maximum Daily (MDEL) limit is 30 mg/L and reported value was 87 mg/L at EFF-001. |
After the results from the initial sampling on 5 February 2021 were received, four additional sampling events were conducted on 24 February, 25 February, 26 February, and 1 March 2021. Note that a fourth sampling event was not scheduled during the month of February as the laboratory does not collect or receive samples over the weekend. BOD concentrations from the additional sampling events on 24-26 February 2021 of 16 mg/L, 19 mg/L, and 25 mg/L, respectively, all remain below the 30 mg/L maximum daily effluent limitation. Results from the 1 March 2021 additional sampling event will be provided to the Water Board once available. |
Violation |
B |
eSMR |
1085339 |
12/14/2020 |
CTOX |
Chronic Toxicity-Fathead Minnow-Growth Maximum Daily (MDEL) limit is 50 % survival and reported value was 0 % survival at EFF-001. |
Enthalpy Analytical is currently conducting a Toxicity Identification Evaluation (TIE) as a result of the failed chronic toxicity test in December 2019 and subsequent additional failed test in April 2020 during the first phase of the accelerated monitoring program. While the TIE is still in progress, it has been identified that high sulfide concentrations in the effluent may be the cause of toxicity. A simultaneous chronic toxicity fathead minnow growth test conducted on effluent with sulfides removed through aeration resulted in a pass result and 102.3% survival. Sterling Ambassador Towers will evaluate toxicity reduction methods and submit a Toxicity Reduction Evaluation (TRE) once Enthalpy Analytical completes the TIE and provides a final summary report confirming that sulfides are the toxicant. |
Violation |
B |
eSMR |
1085340 |
12/14/2020 |
CTOX |
Chronic Toxicity-Fathead Minnow-Survival Maximum Daily (MDEL) limit is 50 % survival and reported value was 0 % survival at EFF-001. |
Enthalpy Analytical is currently conducting a Toxicity Identification Evaluation (TIE) as a result of the failed chronic toxicity test in December 2019 and subsequent additional failed test in April 2020 during the first phase of the accelerated monitoring program. While the TIE is still in progress, it has been identified that high sulfide concentrations in the effluent may be the cause of toxicity. A simultaneous chronic toxicity fathead minnow survival test conducted on effluent with sulfides removed through aeration resulted in a pass result and 100% survival. Sterling Ambassador Towers will evaluate toxicity reduction methods and submit a Toxicity Reduction Evaluation (TRE) once Enthalpy Analytical completes the TIE and provides a final summary report confirming that sulfides are the toxicant. |
Violation |
B |
eSMR |
Report displays most recent five years of violations. Refer to the Interactive Violation Report for more data.
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