Violation ID |
Occurrence Date |
Violation Type |
Violation Description(-) |
Violation Status |
Priority |
Source |
Facility Name |
Violated Reg. Meas. ID |
Violated Reg. Meas. Order No. |
Linked to Enf. |
1142497 |
02/18/2025 |
OEV |
Total Coliform Daily Maximum limit is 240 MPN/100 mL and reported value was 350 MPN/100 mL at EFF-002. |
Violation |
N |
eSMR |
Calistoga City Dunaweal WWTP |
446901 |
R2-2022-0010 |
N |
1140661 |
01/03/2025 |
ATOX |
Acute Toxicity-Fathead Minnow-survival Other limit is 70 % effect and reported value was 30 % effect at EFF-001. |
Violation |
N |
eSMR |
Calistoga City Dunaweal WWTP |
446901 |
R2-2022-0010 |
N |
1140660 |
01/10/2025 |
ATOX |
Acute Toxicity-Fathead Minnow-survival Other limit is 70 % effect and reported value was 10 % effect at EFF-001. |
Violation |
N |
eSMR |
Calistoga City Dunaweal WWTP |
446901 |
R2-2022-0010 |
N |
1138262 |
11/23/2024 |
Deficient Monitoring |
Required weekly samples for BOD, TSS, and E. coli were missed for the week of 11/17 - 11/23 when there were 3 days of discharge (Thu-Sat) at EFF-001 and EFF-002. Operators were notified that sampling is required for each calendar week of discharge (Sun-Sat). This issue will not occur moving forward. |
Violation |
N |
eSMR |
Calistoga City Dunaweal WWTP |
446901 |
R2-2022-0010 |
N |
1129104 |
05/21/2024 |
Deficient Monitoring |
Due to SCADA software upgrades, the daily influent volume was not recorded for three days, 5/20-5/22. Flow recording resumed on 5/23. |
Violation |
N |
eSMR |
Calistoga City Dunaweal WWTP |
446901 |
R2-2022-0010 |
N |
1126577 |
03/31/2024 |
Deficient Monitoring |
Missed some of the required monitoring for the three days of discharge at EFF-002. The missed samples were weekly E. coli and monthly nitrogen species and metals. |
Violation |
N |
eSMR |
Calistoga City Dunaweal WWTP |
446901 |
R2-2022-0010 |
N |
1114133 |
01/31/2023 |
Order Conditions |
TSS percent removal at EFF-002 was 70% this month. The reason is that the TSS influent concentration was very low (dilution from high I&I due to extreme rain events). So even though the effluent concentration was also low and met effluent limits, the difference between influent and effluent concentrations was not significant enough to meet the 85% threshold. |
Violation |
N |
eSMR |
Calistoga City Dunaweal WWTP |
446901 |
R2-2022-0010 |
N |
1112724 |
12/31/2022 |
CAT2 |
Dichlorobromomethane Monthly Average limit is 1.4 ug/L and reported value was 1.56 ug/L at EFF-001. |
Violation |
N |
eSMR |
Calistoga City Dunaweal WWTP |
446901 |
R2-2022-0010 |
N |
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