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. |
1070267 |
12/26/2019 |
CAT1 |
Ammonia, Total (as N) Daily Maximum limit is 5.6 mg/L and reported value was 7.7 mg/L at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1070274 |
12/11/2019 |
CAT1 |
Ammonia, Total (as N) Daily Maximum limit is 5.6 mg/L and reported value was 12 mg/L at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1070277 |
12/18/2019 |
CAT2 |
Copper, Total Monthly Average limit is 21 ug/L and reported value was 26 ug/L at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1073381 |
01/17/2020 |
CAT1 |
Ammonia, Total (as N) Daily Maximum limit is 5.6 mg/L and reported value was 5.8 mg/L at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1073393 |
02/27/2020 |
CAT1 |
Ammonia, Total (as N) Daily Maximum limit is 5.6 mg/L and reported value was 6.0 mg/L at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1073398 |
01/02/2020 |
CAT1 |
Ammonia, Total (as N) Daily Maximum limit is 5.6 mg/L and reported value was 11 mg/L at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1106676 |
01/02/2022 |
Unauthorized Discharge |
The City of Ukiah Recycled Water System experienced an unauthorized discharge of approximately 150,000 gallons of tertiary-treated recycled water that reached The Russian River (water of the state and United States). |
Violation |
None |
Report |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1070252 |
10/31/2019 |
CAT1 |
Ammonia, Total (as N) Monthly Average (Mean) limit is 2.5 mg/L and reported value was 14.7 mg/L at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1070270 |
12/04/2019 |
CAT1 |
Ammonia, Total (as N) Daily Maximum limit is 5.6 mg/L and reported value was 13 mg/L at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1070273 |
12/18/2019 |
CAT1 |
Ammonia, Total (as N) Daily Maximum limit is 5.6 mg/L and reported value was 10 mg/L at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1073379 |
01/31/2020 |
CAT1 |
Ammonia, Total (as N) Monthly Average (Mean) limit is 2.5 mg/L and reported value was 7.2 mg/L at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1073387 |
01/10/2020 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 13 MPN/100 mL at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1073399 |
03/31/2020 |
CAT2 |
Copper, Total Monthly Average limit is 21 ug/L and reported value was 21.5 ug/L at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1073400 |
03/18/2020 |
CAT1 |
Ammonia, Total (as N) Daily Maximum limit is 5.6 mg/L and reported value was 11 mg/L at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1070257 |
10/18/2019 |
CAT1 |
Ammonia, Total (as N) Daily Maximum limit is 5.6 mg/L and reported value was 17 mg/L at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1070265 |
11/22/2019 |
CAT1 |
Ammonia, Total (as N) Daily Maximum limit is 5.6 mg/L and reported value was 17 mg/L at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1073389 |
02/29/2020 |
CAT1 |
Ammonia, Total (as N) Monthly Average (Mean) limit is 2.5 mg/L and reported value was 7.5 mg/L at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1073397 |
03/05/2020 |
CAT1 |
Ammonia, Total (as N) Daily Maximum limit is 5.6 mg/L and reported value was 9.7 mg/L at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1070250 |
10/31/2019 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average limit is 10 mg/L and reported value was 10.3 mg/L at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1070254 |
11/26/2019 |
CAT2 |
Copper, Total Monthly Average limit is 21 ug/L and reported value was 27 ug/L at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1070266 |
11/26/2019 |
CAT1 |
Ammonia, Total (as N) Monthly Average (Mean) limit is 2.50 mg/L and reported value was 14.3 mg/L at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1070275 |
11/05/2019 |
CAT1 |
Ammonia, Total (as N) Daily Maximum limit is 5.6 mg/L and reported value was 13 mg/L at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1073380 |
01/15/2020 |
CAT2 |
Chlorine, Total Residual Maximum Daily (MDEL) limit is 0.02 mg/L and reported value was .28 mg/L at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1070269 |
11/26/2019 |
CAT1 |
Ammonia, Total (as N) Daily Maximum limit is 5.6 mg/L and reported value was 13 mg/L at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1073383 |
03/31/2020 |
CAT1 |
Ammonia, Total (as N) Monthly Average (Mean) limit is 2.5 mg/L and reported value was 9.8 mg/L at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1073388 |
01/28/2020 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 4.5 MPN/100 mL at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1073390 |
02/05/2020 |
CAT1 |
Ammonia, Total (as N) Daily Maximum limit is 5.6 mg/L and reported value was 6.8 mg/L at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1073391 |
02/12/2020 |
CAT1 |
Ammonia, Total (as N) Daily Maximum limit is 5.6 mg/L and reported value was 7.9 mg/L at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1073394 |
01/24/2020 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 7.8 MPN/100 mL at EFF-001A. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1073396 |
01/16/2020 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 7.8 MPN/100 mL at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1061707 |
05/31/2019 |
CAT1 |
Ammonia, Total (as N) Monthly Average (Mean) limit is 2.5 mg/L and reported value was 2.6 mg/L at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1070258 |
10/24/2019 |
CAT1 |
Ammonia, Total (as N) Daily Maximum limit is 5.6 mg/L and reported value was 13 mg/L at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1070272 |
12/26/2019 |
CAT1 |
Ammonia, Total (as N) Monthly Average limit is 2.5 mg/L and reported value was 10.7 mg/L at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1073392 |
02/19/2020 |
CAT1 |
Ammonia, Total (as N) Daily Maximum limit is 5.6 mg/L and reported value was 9.1 mg/L at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1073377 |
01/24/2020 |
CAT1 |
Ammonia, Total (as N) Daily Maximum limit is 5.6 mg/L and reported value was 8.1 mg/L at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1073382 |
03/27/2020 |
CAT2 |
Chlorine, Total Residual Maximum Daily (MDEL) limit is 0.02 mg/L and reported value was 3.0 mg/L at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1073395 |
02/06/2020 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 7.8 MPN/100 mL at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1077646 |
04/02/2020 |
CAT1 |
Ammonia, Total (as N) Monthly Average limit is 2.5 mg/L and reported value was 6.8 mg/L at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1077647 |
04/02/2020 |
CAT1 |
Ammonia, Total (as N) Daily Maximum limit is 5.6 mg/L and reported value was 9.8 mg/L at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1070251 |
10/24/2019 |
CAT2 |
Copper, Total Monthly Average limit is 21 ug/L and reported value was 25 ug/L at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1070260 |
10/31/2019 |
CAT1 |
Ammonia, Total (as N) Daily Maximum limit is 5.6 mg/L and reported value was 14 mg/L at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1073378 |
01/10/2020 |
CAT1 |
Ammonia, Total (as N) Daily Maximum limit is 5.6 mg/L and reported value was 6 mg/L at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1073401 |
02/23/2020 |
CAT1 |
Ammonia, Total (as N) Daily Maximum limit is 5.6 mg/L and reported value was 8.8 mg/L at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
Y |
1073402 |
03/11/2020 |
Deficient Monitoring |
The wrong chain of custody file was generated resulting in the lack of a request for Ammonia analysis at the contract laboratory. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1061712 |
05/31/2019 |
Deficient Monitoring |
EFF-001B was not analyzed for Nitrite-N in April and May. Monthly analyses was required. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1085123 |
12/31/2020 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average limit is 10 mg/L and reported value was 20 mg/L at REC-001. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1085119 |
12/12/2020 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average limit is 15 mg/L and reported value was 16 mg/L at REC-001. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1073404 |
03/11/2020 |
Deficient Monitoring |
The wrong chain of custody file was generated resulting in the lack of a request for Nitrate analysis at the contract laboratory. The sample was analyzed for Chloride by the 300.0 method, which generates Nitrate data as well. The Nitrate data was requested from the contract laboratory after realizing the mistake, but the analysis was not performed within the recommended holding time for Nitrate samples. The data was included in the eSMR for record keeping. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1066092 |
08/21/2019 |
OEV |
Total Coliform 7-Day Median limit is 23 MPN/100 mL and reported value was 540 MPN/100 mL at EFF-002. *** MMP Exempt Reason:Discharge at EFF-002 is to a percolation pond. This is not an NPDES discharge, thus not subject to MMPs. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1116015 |
01/24/2023 |
CAT2 |
Copper, Total Maximum Daily (MDEL) limit is 40 ug/L and reported value was 68 ug/L at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1080727 |
09/30/2020 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average limit is 10 mg/L and reported value was 26 mg/L at REC-001. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1126671 |
03/30/2024 |
OEV |
Total Coliform Weekly Average limit is 23 MPN/100 mL and reported value was 70 MPN/100 mL at EFF-002. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1106677 |
04/21/2022 |
OEV |
Flow Daily Average (Mean) limit is 4.0 MGD and reported value was 4.073 MGD at EFF-001A. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1080717 |
07/29/2020 |
Deficient Monitoring |
Due to a lab error at the contract laboratory, the BOD sample taken on 7/29/20 was invalidated. A written statement from the contract lab detailing the event is included with the SMR. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1080720 |
09/09/2020 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average limit is 45 mg/L and reported value was 70 mg/L at EFF-002. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1099693 |
10/06/2021 |
Deficient Monitoring |
Did not collect weekly pH value for REC-001 week of October 6th 2021. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1099692 |
12/31/2021 |
Deficient Monitoring |
Did not collect monthly monitoring sample for EFF-002 in October (Ammonia (N), Nitrate (N), Nitrite (N), Organic Nitrogen (N), TDS, Chloride, Sodium). Did not collect Specific Conductance for EFF-002 in November, or December. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1116018 |
01/31/2023 |
CAT2 |
Copper, Total Monthly Average limit is 21 ug/L and reported value was 34 ug/L at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1070263 |
10/09/2019 |
OEV |
Total Coliform 7-Day Median limit is 23 MPN/100 mL and reported value was 240 MPN/100 mL at EFF-002. *** MMP Exempt Reason:Discharge at EFF-002 is to a percolation pond. This is not an NPDES discharge, thus not subject to MMPs. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1085117 |
11/07/2020 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average limit is 45 mg/L and reported value was 46 mg/L at EFF-002. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1080715 |
09/07/2020 |
OEV |
CT (Cl residual * contact time) Daily Minimum limit is 450 mg-min/L and reported value was 381 mg-min/L at REC-001. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1066093 |
08/23/2019 |
OEV |
Total Coliform 7-Day Median limit is 23 MPN/100 mL and reported value was 79 MPN/100 mL. *** MMP Exempt Reason:Discharge at EFF-002 is to a percolation pond. This is not an NPDES discharge, thus not subject to MMPs. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1080725 |
10/09/2020 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average limit is 15 mg/L and reported value was 20 mg/L at REC-001. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1066095 |
09/18/2019 |
Deficient Monitoring |
Missed daily pH reading at EFF-002. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1116016 |
01/17/2023 |
OEV |
Surface Loading Rate Instantaneous Maximum limit is 5 gpm/sqft and reported value was 5.010 gpm/sqft at INT-001A. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1126664 |
02/17/2024 |
OEV |
Total Coliform Weekly Average limit is 23 MPN/100 mL and reported value was 33 MPN/100 mL at EFF-002. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1092690 |
06/09/2021 |
Deficient Monitoring |
Due to sample mislabeling the BOD sample taken for the week of 6/12/21 for INF-001 was unable to be quantified by the contract laboratory, notification of the mislabeling was provided after the week had ended preventing resampling. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1121466 |
09/30/2023 |
Deficient Monitoring |
Specific Conductance was not measured at site EFF-002 during the month of September as required by the NPDES permit. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1085116 |
10/31/2020 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average limit is 10 mg/L and reported value was 21.5 mg/L at REC-001. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1126665 |
03/23/2024 |
OEV |
Total Coliform Weekly Average limit is 23 MPN/100 mL and reported value was 33 MPN/100 mL at EFF-002. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1119006 |
06/10/2023 |
OEV |
Total Coliform Daily Maximum limit is 240 MPN/100 mL and reported value was 1011.2 MPN/100 mL at REC-001. *** MMP Exempt Reason:No discharge to surface water. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1066096 |
07/02/2019 |
OEV |
Total Coliform 7-Day Median limit is 23 MPN/100 mL and reported value was 240 MPN/100 mL at EFF-002. *** MMP Exempt Reason:Discharge at EFF-002 is to a percolation pond. This is not an NPDES discharge, thus not subject to MMPs. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1080724 |
09/02/2020 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average limit is 45 mg/L and reported value was 82 mg/L at EFF-002. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1070279 |
11/14/2019 |
OEV |
Total Coliform 7-Day Median limit is 23 MPN/100 mL and reported value was 132.25 MPN/100 mL at EFF-002. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1073384 |
03/11/2020 |
Deficient Monitoring |
The wrong chain of custody file was generated resulting in the lack of a request for Ammonia analysis at the contract laboratory. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1073386 |
03/11/2020 |
Deficient Monitoring |
The wrong chain of custody file was generated resulting in the lack of a request for Turbidity analysis at the contract laboratory. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1070253 |
10/26/2019 |
OEV |
Total Coliform 7-Day Median limit is 23 MPN/100 mL and reported value was 79 MPN/100 mL at EFF-002. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1070264 |
11/06/2019 |
Deficient Monitoring |
On 11/6 and 11/10 EFF-001B pH was not taken during river discharge because discharge was stopped before sampling could occur. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1070268 |
12/07/2019 |
Deficient Monitoring |
On 12/7 and 12/8 EFF-002 was not sampled for pH because the operator inadvertently missed these samples. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1085120 |
11/07/2020 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average limit is 15 mg/L and reported value was 32 mg/L at REC-001. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1070278 |
11/07/2019 |
OEV |
Total Coliform 7-Day Median limit is 23 MPN/100 mL and reported value was 110 MPN/100 mL at EFF-002. *** MMP Exempt Reason:Discharge at EFF-002 is to a percolation pond. This is not an NPDES discharge, thus not subject to MMPs. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1066094 |
07/31/2019 |
Deficient Monitoring |
Quarterly monitoring (July 2019) at river stations RSW-003 to RSW-005 was missed. There was no discharge to the river at this time. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1085113 |
10/31/2020 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average limit is 30 mg/L and reported value was 36.1 mg/L at EFF-002. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1092687 |
05/21/2021 |
Deficient Monitoring |
No dissolved oxygen reading was taken during sampling at river monitoring location RSW-005 due to a malfunction with the dissolved oxygen meter. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1085118 |
11/30/2020 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average limit is 10 mg/L and reported value was 32 mg/L at REC-001. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1126670 |
02/03/2024 |
OEV |
Total Coliform Weekly Average limit is 23 MPN/100 mL and reported value was 130 MPN/100 mL at EFF-002. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1126175 |
03/11/2024 |
Unauthorized Discharge |
Unauthorized discharge of between 438,000 gallons and 525,000 gallons of secondary treated wastewater to the Russian River. |
Violation |
None |
Complaint |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1096136 |
08/24/2021 |
OEV |
Total Coliform Monthly Maximum limit is 240 MPN/100 mL and reported value was 2419.6 MPN/100 mL at REC-001. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1070271 |
11/09/2019 |
Deficient Monitoring |
On 11/9 EFF-001B was not sampled for pH during river discharge. The operator inadvertently missed this sample. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1085121 |
11/30/2020 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average limit is 30 mg/L and reported value was 33.9 mg/L at EFF-002. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1085112 |
11/14/2020 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average limit is 45 mg/L and reported value was 66 mg/L at EFF-002. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1080718 |
07/29/2020 |
Deficient Monitoring |
Due to a lab error at the contract laboratory, the BOD sample taken on 7/29/20 was invalidated. A written statement from the contract lab detailing the event is included with the SMR. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1110783 |
09/03/2022 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average (Mean) limit is 15 mg/L and reported value was 21 mg/L at REC-001. *** MMP Exempt Reason:No discharge to surface water. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1126666 |
03/11/2024 |
Order Conditions |
March 11, 2024 - Between 438,000 and 525,000 gallons of Secondary Treated Wastewater was discharged to the Russian River through Discharge Point 001 (EFF-001B) due to an operator error involving the set point conditions of several valves. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1066091 |
07/02/2019 |
Deficient Monitoring |
On July 2nd, the contracted lab, Alpha Labs, experienced an issue with their incubator and invalidated the BOD tests for INF-001, EFF-002, and REC-001. We were not given notice in time to take another sample. Alpha provided a letter (attached to SMR) indicating that the fault was theirs and describing the problem. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1112741 |
10/05/2020 |
Deficient Monitoring |
The NPDES permit requires a once per term limit monitoring of CTR and Title 22 Pollutants at monitoring location INF-001. When requesting the analysis on 10/5/2020, Trivalent chromium was not requested as part of the analysis. As a result, there is no value for trivalent chromium included with the report. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1073385 |
03/11/2020 |
Deficient Monitoring |
The wrong chain of custody file was generated resulting in the lack of a request for Ammonia analysis at the contract laboratory. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1085114 |
10/17/2020 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average limit is 15 mg/L and reported value was 20 mg/L at REC-001. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1080726 |
09/16/2020 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average limit is 15 mg/L and reported value was 31 mg/L at REC-001. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1070261 |
10/24/2019 |
Deficient Monitoring |
Turbidity sampling at RSW-002 was missed for the second week of discharging to the river - checked wrong box on COC form. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1070280 |
10/31/2019 |
OEV |
Total Coliform Not to exceed a specific limit more than once within any 30-day period. limit is 240 MPN/100 mL and reported value was 920 MPN/100 mL at EFF-002. *** MMP Exempt Reason:Discharge at EFF-002 is to a percolation pond. This is not an NPDES discharge, thus not subject to MMPs. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1116017 |
01/19/2023 |
Order Conditions |
Surface Loading Rate Instantaneous Maximum limit is 5 gpm/sqft and reported value was 5.035 gpm/sqft at INT-001A. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1073403 |
03/11/2020 |
Deficient Monitoring |
The wrong chain of custody file was generated resulting in the lack of a request for Turbidity analysis at the contract laboratory. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1109650 |
07/23/2022 |
Deficient Monitoring |
No sample was collected for pH at sample location REC-001 during the third week of July while recycled water production was occurring. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1126663 |
02/22/2024 |
CAT2 |
Chlorine, Total Residual Maximum Daily (MDEL) limit is 0.02 mg/L and reported value was 0.75 mg/L at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1116012 |
01/24/2023 |
OEV |
CT (Cl residual * contact time) Daily Minimum limit is 450 mg-min/L and reported value was 170 mg-min/L at EFF-001A. *** MMP Exempt Reason:Limit is related to recycled water production. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1070262 |
10/01/2019 |
OEV |
Total Coliform 7-Day Median limit is 23 MPN/100 mL and reported value was 920 MPN/100 mL at EFF-002. *** MMP Exempt Reason:Discharge at EFF-002 is to a percolation pond. This is not an NPDES discharge, thus not subject to MMPs. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1096137 |
07/14/2021 |
Deficient Monitoring |
The pH data for REC-001 taken 7/14/21 was lost due to a malfunction with the field meter used to collect the data. No weekly pH data is available for the week of 7/14/21 at location REC-001. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1077645 |
06/17/2020 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average limit is 15 mg/L and reported value was 17 mg/L at REC-001. *** MMP Exempt Reason:Discharge to land |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1080721 |
09/16/2020 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average limit is 45 mg/L and reported value was 52 mg/L at EFF-002. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1119007 |
06/08/2023 |
Order Conditions |
Surface Loading Rate Instantaneous Maximum limit is 5 gpm/sqft and reported value was 5.142 gpm/sqft at INT-001A. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1119005 |
06/30/2023 |
Deficient Monitoring |
RSW-003, RSW-004, RSW-005 - No turbidity value recorded during may sampling event. REC-001 - No weekly pH recorded during the weeks of 6/3/2023 and 6/10/2023. REC-001 - No weekly BOD collected during the week of 6/3/2023. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1126668 |
03/13/2024 |
ATOX |
Acute Toxicity Instantaneous Minimum limit is 70 % survival and reported value was 0 % survival at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1080716 |
07/22/2020 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average limit is 45 mg/L and reported value was 95 mg/L at EFF-002. *** MMP Exempt Reason:Discharge to land. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1109649 |
07/24/2022 |
OEV |
CT (Cl residual * contact time) Daily Minimum limit is 450 mg-min/L and reported value was 374 mg-min/L at EFF-001A. *** MMP Exempt Reason:Related to Recycled Water Production |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1116014 |
01/23/2023 |
OEV |
CT (Cl residual * contact time) Daily Minimum limit is 450 mg-min/L and reported value was 190 mg-min/L at EFF-001A. *** MMP Exempt Reason:Limit is related to recycled water production. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1070259 |
10/18/2019 |
Deficient Monitoring |
Turbidity sampling at RSW-001 and RSW-002 was inadvertently missed for the first week of discharging to the river. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1126667 |
01/20/2024 |
OEV |
Total Coliform Weekly Average limit is 23 MPN/100 mL and reported value was 26 MPN/100 mL at EFF-002. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1092689 |
06/09/2021 |
Deficient Monitoring |
Due to sample mislabeling the BOD sample taken for the week of 6/12/21 for EFF-002 was unable to be quantified by the contract laboratory, notification of the mislabeling was provided after the week had ended preventing resampling. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1085122 |
12/05/2020 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average limit is 15 mg/L and reported value was 23 mg/L at REC-001. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1070256 |
10/31/2019 |
OEV |
Total Coliform 7-Day Median limit is 23 MPN/100 mL and reported value was 79 MPN/100 mL at EFF-002. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1080723 |
09/02/2020 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average limit is 15 mg/L and reported value was 44 mg/L at REC-001. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1085115 |
10/24/2020 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average limit is 15 mg/L and reported value was 36 mg/L at REC-001. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1061708 |
05/31/2019 |
Deficient Monitoring |
Missed THM sample. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1126669 |
02/21/2024 |
CAT2 |
Chlorine, Total Residual Maximum Daily (MDEL) limit is 0.02 mg/L and reported value was 0.74 mg/L at EFF-001B. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1071412 |
12/31/2019 |
Deficient Monitoring |
The annual priority pollutants effluent scan was inadvertently missed in 2019. The City is scheduling it soon, before effluent discharge to the river ends for the season. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1061713 |
05/26/2019 |
Deficient Monitoring |
The chlorine analyzer failed 5/26-5/30. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1096138 |
08/25/2021 |
OEV |
CT (Cl residual * contact time) Daily Minimum limit is 450 mg-min/L and reported value was 343 mg-min/L at EFF-001A. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1085111 |
10/10/2020 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average limit is 45 mg/L and reported value was 82 mg/L at EFF-002. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1092688 |
04/30/2021 |
Deficient Monitoring |
No coliform sample was taken on 4/30/2021 for sampling location REC-001 while discharging to discharge point 003 "Tertiary Treated Wastewater". The cause was due to a miscommunication between operators and laboratory staff when restarting the AWT after several days of non operation. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1080719 |
07/29/2020 |
Deficient Monitoring |
Due to a lab error at the contract laboratory, the BOD sample taken on 7/29/20 was invalidated. A written statement from the contract lab detailing the event is included with the SMR. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1080722 |
09/30/2020 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average limit is 30 mg/L and reported value was 54 mg/L at EFF-002. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1116019 |
01/20/2023 |
OEV |
CT (Cl residual * contact time) Daily Minimum limit is 450 mg-min/L and reported value was 49 mg-min/L at EFF-001A. *** MMP Exempt Reason:Limit is related to recycled water production. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1070255 |
10/15/2019 |
OEV |
Total Coliform 7-Day Median limit is 23 MPN/100 mL and reported value was 920 MPN/100 mL at EFF-002. *** MMP Exempt Reason:Discharge at EFF-002 is to a percolation pond. This is not an NPDES discharge, thus not subject to MMPs. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1116013 |
01/18/2023 |
OEV |
Surface Loading Rate Instantaneous Maximum limit is 5 gpm/sqft and reported value was 5.023 gpm/sqft at INT-001A. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1112919 |
10/26/2022 |
Order Conditions |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average limit is 15 mg/L and reported value was 20 mg/L at REC-001. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
1096139 |
09/29/2021 |
OEV |
Total Coliform Weekly Average limit is 23 MPN/100 mL and reported value was 170 MPN/100 mL at EFF-002. |
Violation |
N |
eSMR |
Ukiah City WWTP |
413425 |
R1-2018-0035 |
N |
Report currently showing last five years of violations. Click here to return to viewing one year of violations. Refer to the Interactive Violation Report for more data.
|