| Violation ID |
Occurred Date |
Violation Type |
(-) Violation Description |
Corrective Action |
Status |
Classification |
Source |
| 1128204 |
04/02/2024 |
OEV |
Total Coliform Weekly Average (Mean) limit is 0 MPN/100 mL and reported value was 0 MPN/100 mL at M-012(B). |
Deficient monitoring. New protocols to ensure compliance in future |
Violation |
U |
eSMR |
| 1128203 |
04/01/2024 |
CTOX |
Chronic Toxicity-C.dubia-Reproduction 3-Sample Average (Mean) limit is 1 TUc and reported value was 2 TUc at M-003. |
Lab results were received less than a week before end of discharge to Eel River. Contacted regulator to decide how to proceed next discharge season |
Violation |
U |
eSMR |
| 1125428 |
02/29/2024 |
CAT1 |
BOD5 @ 20 Deg. C, Percent Removal 1-Hour Average (Mean) limit is 85 % and reported value was 81 % at M-012(B). |
Caused by excessively low BOD in INF sample due to very high flows. |
Violation |
U |
eSMR |
| 1119868 |
07/31/2023 |
OEV |
Total Coliform Monthly Average limit is 23 MPN/100 mL and reported value was 40 MPN/100 mL at M-012(A). |
cleaned contact basin |
Violation |
U |
eSMR |
| 1119869 |
07/11/2023 |
OEV |
Total Coliform Daily Maximum limit is 230 MPN/100 mL and reported value was 1600 MPN/100 mL at M-012(A). |
cleaned contact basin |
Violation |
U |
eSMR |
| 1119126 |
06/06/2023 |
OEV |
Total Coliform 1-Hour Average (Mean) limit is 230 MPN/100 mL and reported value was 1600 MPN/100 mL at M-012(A). |
cleaned chlorine contact chamber |
Violation |
U |
eSMR |
| 1112510 |
12/31/2022 |
CAT1 |
Total Suspended Solids (TSS), Percent Removal Monthly Average (Mean) limit is 85 % and reported value was 84 % at M-012(B). |
Staff is beginning to investigate sources of I&I during high flow events affecting Influent BOD/TSS |
Violation |
B |
eSMR |
| 1112509 |
12/27/2022 |
OEV |
Fecal Coliform Daily Maximum limit is 230 MPN/100 mL and reported value was 1600 MPN/100 mL at M-012(A). |
Chlorine was adjusted to higher dosage to accommodate for higher flows. |
Violation |
B |
eSMR |
| 1112511 |
12/19/2022 |
DMON |
Discharged single day (19th) for Acute Toxicity Test, on non-normal sample day, ceased discharge (closed valve) after Acute Sample was taken. Next day (20th) early morning was 6.4 earthquake, and power out to the region. Samples were taken the next day (21st), and samples for M003 (Settleable Solids; Ammonia, Total (as N); Nitrate, Total (as N); Nitrite, Total (as N); Nitrogen, Total Organic (as N); Nitrogen, Total (as N); Phosphorus, Total (as P); Temperature; Dissolved Oxygen; Electrical Conductivity @ 25 Deg. C; Total Dissolved Solids (TDS); Turbidity; Hardness, Total (as CaCO3)) were missed. No discharge from M003 to river occurred on the standard routine sample day 12-20-2022. |
If any single discharge occurs, samples will be taken same day, and submitted to lab, regardless of standard routine sample day. |
Violation |
B |
eSMR |
| 1112507 |
12/19/2022 |
DMON |
Discharged single day (19th) for Acute Toxicity Test, on non-normal sample day, ceased discharge (closed valve) after Acute Sample was taken. Next day (20th) early morning was 6.4 earthquake, and power out to the region. Samples were taken the next day (21st), and samples for R017 (pH; Temperature; Dissolved Oxygen; Electrical Conductivity @ 25 Deg. C; Total Dissolved Solids (TDS); Turbidity; Hardness, Total (as CaCO3)) were missed. River water observation for floatables and abnormalities at R017 was missed. No discharge from M003 to river occurred on the standard routine sample day 12-20-2022. |
If any single discharge occurs, samples will be taken same day, and submitted to lab, regardless of standard routine sample day. |
Violation |
B |
eSMR |
| 1112508 |
12/19/2022 |
DMON |
Discharged single day (19th) for Acute Toxicity Test, on non-normal sample day, ceased discharge (closed valve) after Acute Sample was taken. Next day (20th) early morning was 6.4 earthquake, and power out to the region. Samples were taken the next day (21st), and samples for R018 (pH; Dissolved Oxygen; Electrical Conductivity @ 25 Deg. C; Total Dissolved Solids (TDS); Turbidity) were missed. River water observation for floatables and abnormalities at R018 was missed. No discharge from M003 to river occurred on the standard routine sample day 12-20-2022. Temperature was used from USGS downstream monitoring station at Scotia. |
If any single discharge occurs, samples will be taken same day, and submitted to lab, regardless of standard routine sample day. |
Violation |
B |
eSMR |
| 1107445 |
05/06/2022 |
CTOX |
Chronic Toxicity-C.dubia-Reproduction Other limit is 1.0 TUc and reported value was 1.3 TUc at M-003. |
Discharger contacted NCRWQCB engineer and initiated accelerated monitoring procedures. Accelerated monitoring results are also attached to this report. All accelerated tests passed. |
Violation |
B |
eSMR |
| 1103610 |
03/29/2022 |
CAT1 |
Total Suspended Solids (TSS) 7-Day Average (Mean) limit is 45 mg/L and reported value was 52 mg/L at M-012(B). |
Routine maintenance will be conducted after sample day moving forward. |
Violation |
B |
eSMR |
| 1089559 |
04/09/2021 |
DMON |
TDS/Conductivity/Turbidity was not tested during the river water sampling at M-003 |
Further review of all sampling processes and expectations with all operators. Created a Monthly checklist for both receiving of sampling bottles as well as every lab test required each month. |
Violation |
B |
eSMR |
| 1090602 |
04/04/2021 |
OEV |
pH 1-Hour Average (Mean) limit is 06.5 SU and reported value was 6.4 SU at M-012(B). |
Increased the frequency of sloughing removal from contact chamber before releasing into the ponds that lead to M-012B. |
Violation |
B |
eSMR |
| 1088073 |
02/02/2021 |
DMON |
R-017 and R-018 were not tested for pH and temperature during the collection process for February. Values listed for these results were recorded during the sampling event the following month on March 9th. |
Reviewed collection and monitoring process and requirements with Operators during March sampling event 3/9/21 |
Violation |
B |
eSMR |
| 1088074 |
02/02/2021 |
DMON |
R-017 and R-018 were not tested for pH and temperature during the collection process for February. Values listed for these results were recorded during the sampling event the following month on March 9th. |
Reviewed collection and monitoring process and requirements with Operators during March sampling event 3/9/21 |
Violation |
B |
eSMR |
| 1083037 |
11/10/2020 |
OEV |
Total Coliform Daily Maximum limit is 230 MPN/100 mL and reported value was 540 MPN/100 mL at M-012(A). |
Increased chlorine dosage to neutralize coliform presence as well as increased skimming of sloughings within contact chamber to increase effectiveness of chlorine. |
Violation |
U |
eSMR |
| 1081782 |
10/13/2020 |
OEV |
Total Coliform Daily Maximum limit is 230 MPN/100 mL and reported value was 920 MPN/100 mL at M-012(A). |
Increased frequency of contact chamber cleaning, and Increased chlorine dosage while awaiting new clarifier installation. New clarifier has since been installed. |
Violation |
U |
eSMR |
| 1073193 |
03/04/2020 |
CAT2 |
Chlorine, Total Residual Daily Maximum limit is 0.02 mg/L and reported value was 0.10 mg/L at M-003. |
Operators are monitroing the chlorine residual at
WWTP Chlorine Contact (M012A) to ensure
the WWTP is not contributing to the Total
Chlorine Daily Limit violation. |
Violation |
U |
eSMR |
| 1073194 |
03/02/2020 |
CAT2 |
Chlorine, Total Residual Daily Maximum limit is 0.02 mg/L and reported value was 0.05 mg/L at M-003. |
Operators are monitoring the chlorine residual at
WWTP Chlorine Contact (M012A) to ensure
the WWTP is not contributing to the Total
Chlorine Daily Limit violation. |
Violation |
U |
eSMR |
| 1072060 |
02/04/2020 |
OEV |
Total Coliform Daily Maximum limit is 23 MPN/100 mL and reported value was 1600 MPN/100 mL at M-012(A). |
Operator cleaned contact chamber after sampling. |
Violation |
U |
eSMR |
| 1082148 |
01/21/2020 |
CAT1 |
Settleable Solids Daily Maximum limit is 0.2 ml/L and reported value was 0.3 ml/L at M-003. |
|
Violation |
B |
Report |
| 1082149 |
01/14/2020 |
CAT1 |
Settleable Solids Daily Maximum limit is 0.2 ml/L and reported value was 0.3 ml/L at M-003. |
|
Violation |
B |
Report |
| 1070076 |
12/31/2019 |
Deficient Reporting |
No pH, test results lost. |
pH's will now be recorded on COC's and Monthly Monitoring Worksheets |
Violation |
U |
eSMR |
| 1070075 |
12/24/2019 |
Deficient Reporting |
No pH, test results lost. |
pH's will now be recorded on COC's and Monthly Monitoring Worksheets |
Violation |
U |
eSMR |
| 1070077 |
12/17/2019 |
Deficient Reporting |
No pH, test results lost. |
pH's will now be recorded on COC's and Monthly Monitoring Worksheets |
Violation |
U |
eSMR |
| 1082136 |
12/06/2019 |
DMON |
weekly pH monitoring was not performed or lost |
Discharger has indicated that pH's will now be recorded on COC's and Monthly Monitoring Worksheets |
Violation |
B |
Report |
| 1067469 |
10/29/2019 |
DMON |
North Coast Labs was closed on our normal sample date due to PG&E shutdown. Re-sample taken on 10-30 was picked up by them and lost. No lab results were provided by them. |
None taken |
Violation |
U |
eSMR |
| 1067468 |
10/10/2019 |
OEV |
Total Coliform Maximum Daily (MDEL) limit is 230 MPN/100 mL and reported value was 1600 MPN/100 mL at M-012(A). |
Upped chlorine feed rate. |
Violation |
U |
eSMR |
|
Report displays most recent five years of violations. Refer to the Interactive Violation Report for more data.
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