More Info
|
SNOHOMISH STP
| WA0029548 | Active | Municipal NPDES IP | SNOHOMISH | Snohomish | 12/1/2023 | N/A | Effluent Violations | Numeric effluent violation | | | | 1889.51 | | Leung: Due to high rainfall events, they experienced spiked influent flow in the monitoring period. Solids settling in the lagoons were disturbed and resuspended. These excess solids loadings and elevated flows reduced the performance of filtration process resulting in elevated effluent TSS levels. | | |
More Info
|
SNOHOMISH STP
| WA0029548 | Active | Municipal NPDES IP | SNOHOMISH | Snohomish | 12/1/2022 | N/A | Effluent Violations | Numeric effluent violation | | | | 1240.53 | | | | |
More Info
|
SNOHOMISH STP
| WA0029548 | Active | Municipal NPDES IP | SNOHOMISH | Snohomish | 1/1/2021 | N/A | Design Criteria (85%) | 85% Design Criteria Warning (if exceeded for 3 consecutive months triggers permit action) | | | | 2.55 | | | | |
More Info
|
SNOHOMISH STP
| WA0029548 | Active | Municipal NPDES IP | SNOHOMISH | Snohomish | 12/1/2020 | N/A | Effluent Violations | Numeric effluent violation | | | | 33 | | | | |
More Info
|
SNOHOMISH STP
| WA0029548 | Active | Municipal NPDES IP | SNOHOMISH | Snohomish | 12/1/2020 | N/A | Effluent Violations | Numeric effluent violation | | | | 46.5 | | | | |
More Info
|
SNOHOMISH STP
| WA0029548 | Active | Municipal NPDES IP | SNOHOMISH | Snohomish | 12/1/2020 | N/A | Effluent Violations | Numeric effluent violation | | | | 1391.36 | | | | |
More Info
|
SNOHOMISH STP
| WA0029548 | Active | Municipal NPDES IP | SNOHOMISH | Snohomish | 2/1/2020 | N/A | Design Criteria (85%) | 85% Design Criteria Warning (if exceeded for 3 consecutive months triggers permit action) | | | | 2.64 | | | | |
More Info
|
SNOHOMISH STP
| WA0029548 | Active | Municipal NPDES IP | SNOHOMISH | Snohomish | 2/1/2020 | N/A | Effluent Violations | Numeric effluent violation | | | | 1064.77 | | 5/1/2020 Warning letter for TSS exceedance in February 2020 | | |
More Info
|
SNOHOMISH STP
| WA0029548 | Active | Municipal NPDES IP | SNOHOMISH | Snohomish | 11/1/2018 | N/A | Monitoring Violations | Frequency of Sampling Violation | Solids (Residue) (Total suspended (TSS)) | Milligrams/L (mg/L) | Single Sample (Main DMR Grid) | | | DMR note: "The City missed the start of a new parameter as it pertains to Influent TSS sampling from November to March on our new permit. We went from 2/week to 4/week influent sampling of TSS. This error has been found and the new testing has been scheduled. I apologize for the error on my part." Jankowiak: I found the error and told them, not the operator. Recommend warning letter.
Eleuterio: emailed Duane and pointed out that in the wet months TSS must be monitored 4/week. | | 001 |
More Info
|
SNOHOMISH STP
| WA0029548 | Active | Municipal NPDES IP | SNOHOMISH | Snohomish | 11/1/2018 | N/A | Monitoring Violations | Frequency of Sampling Violation | Solids (Residue) (Total suspended (TSS)) | Milligrams/L (mg/L) | Average | | | DMR note: "The City missed the start of a new parameter as it pertains to Influent TSS sampling from November to March on our new permit. We went from 2/week to 4/week influent sampling of TSS. This error has been found and the new testing has been scheduled. I apologize for the error on my part." Jankowiak: I found the error and told them, not the operator. Recommend warning letter.
Eleuterio: emailed Duane and pointed out that in the wet months TSS must be monitored 4/week. | | 001 |