| Violation ID |
Occurred Date |
Violation Type |
(-) Violation Description |
Corrective Action |
Status |
Classification |
Source |
| 1105398 |
05/31/2022 |
CAT2 |
Nickel, Total Recoverable Monthly Average (Mean) limit is 22 ug/L and reported value was 41.0 ug/L. |
The source of Nickel is suspected to be the 304 stainless steel in media vessels which in high salinity groundwater conditions, where flow rate through the treatment system is low, can easily corrode and leach nickel. The discharger will use media vessels without 304 stainless steel if it decides to resume discharge to surface waters. |
Violation |
B |
Report |
| 1105399 |
05/21/2022 |
Failure to Notify |
The discharger failed to notify within 24-hr a daily maximum effluent limit exceedance for nickel that occurred on May 13 and reported by its contracted lab on May 20. The notification was initially made on June 2 within the context of an average monthly effluent limit exceedance for nickel. |
The discharger did not address this violation but was made aware of. |
Violation |
B |
Report |
| 1105397 |
05/13/2022 |
CAT2 |
Nickel, Total Recoverable Maximum Daily (MDEL) limit is 44 ug/L and reported value was 78 ug/L. |
The source of Nickel is suspected to be the 304 stainless steel in media vessels which in high salinity groundwater conditions, where flow rate through the treatment system is low, can easily corrode and leach nickel. The discharger will use media vessels without 304 stainless steel if it decides to resume discharge to surface waters. |
Violation |
B |
Report |
| 1099214 |
11/23/2021 |
CAT2 |
Methyl Tert-butyl Ether (MTBE) Maximum Daily (MDEL) limit is 0.5 ug/L and reported value was 1.4 ug/L. |
As a corrective measure, the Discharger was recommended to discharge to the sanitary sewer to flush out the adsorption media vessels which were replaced on November 17, 2021 and dispose of potentially impacted MTBE wastewater in the equalization tank upstream of the media vessels. Following this step, the Discharger will resample the effluent and mid-point monitoring locations while the system is in recirculation mode or discharging to the sanitary sewer to determine removal of MTBE. If MTBE remains present above the effluent limit, the adsorption media vessels or media may need to be selectively replaced. The treatment system operation will verify with their vendor that the media vessels were adequately cleaned before delivery to the site and that the media in the vessels was new and of the proper requested source. |
Violation |
B |
Report |
| 1084085 |
11/20/2020 |
OEV |
TPH as Motor Oil Maximum Daily (MDEL) limit is 100 ug/L and reported value was 372 ug/L. |
The discharger suspects the exceedance is a product of interferences by the presence of naturally occurring organic matter, as result of effluent re-analysis performed with silica-gel cleanup that did not detect TPH-mo. The discharger will collect split samples on its next monitoring event to determine whether the detections stem from lab analytical interferences. |
Violation |
B |
Report |
|
Report displays most recent five years of violations. Refer to the Interactive Violation Report for more data.
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