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. |
1079052 |
04/06/2020 |
CAT2 |
Copper, Total Monthly Average limit is 6.5 ug/L and reported value was 13 ug/L at M-001. |
Violation |
N |
eSMR |
Merced WWTF |
397512 |
R5-2014-0096 |
Y |
1111617 |
12/21/2022 |
Deficient Monitoring |
From June 2020 to October 2022 the BOD and TSS removal efficiency was calculated and reported monthly, we did not report the calculations three times per week as the permit required. The data and calculations involved are present but were not uploaded on either the pet tool when that was being used for reporting purposes or the reports generated by Labworks. |
Violation |
N |
eSMR |
Merced WWTF |
438006 |
R5-2020-0014 |
N |
1112908 |
12/12/2022 |
Groundwater |
The results for nitrate as N for groundwater MW #11 were 46 mg/L. The Groundwater Limitations under Waste Discharge requirements page 15 of permit Order R5-2020-0014 refer to primary or secondary MCLs established in Title 22 of the CCR and the limit is 10 mg/L. |
Violation |
N |
eSMR |
Merced WWTF |
438006 |
R5-2020-0014 |
N |
1066084 |
08/19/2019 |
Groundwater |
The nitrate nitrogen concentration in Groundwater Monitoring Well #1 exceeded the limit of 10 mg/L set forth in Order No. R5-2014-0096 with a result of 17 mg/L. |
Violation |
N |
eSMR |
Merced WWTF |
397512 |
R5-2014-0096 |
N |
1077584 |
06/09/2020 |
Groundwater |
The total coliform concentration in Groundwater Monitoring Well #10 exceeded the limit set forth in Order No. R5-2014-0096 with a result of >23 MPN. |
Violation |
N |
eSMR |
Merced WWTF |
397512 |
R5-2014-0096 |
N |
1092709 |
06/28/2021 |
Groundwater |
The groundwater limitation for total coliform organism is 2.2 MPN/100mL per Order R5-2020-0014. Groundwater Monitoring Well No. 4 had a result of 9.2 MPN/100mL. MW 4 is located on the southside of the Land Application Area. |
Violation |
N |
eSMR |
Merced WWTF |
438006 |
R5-2020-0014 |
N |
1077582 |
06/09/2020 |
Groundwater |
The total coliform concentration in Groundwater Monitoring Well #9 exceeded the limit set forth in Order No. R5-2014-0096 with a result of 5.1 MPN. |
Violation |
N |
eSMR |
Merced WWTF |
397512 |
R5-2014-0096 |
N |
1123536 |
11/28/2023 |
Groundwater |
The Nitrate (as N) concentration for groundwater MW 5 was 17 mg/L which exceeds drinking water standards of 10 mg/L for Nitrate (as N). |
Violation |
N |
eSMR |
Merced WWTF |
438006 |
R5-2020-0014 |
N |
1066087 |
08/20/2019 |
Groundwater |
The nitrate nitrogen concentration in Groundwater Monitoring Well #11 exceeded the limit of 10 mg/L set forth in Order No. R5-2014-0096 with a result of 62 mg/L. |
Violation |
N |
eSMR |
Merced WWTF |
397512 |
R5-2014-0096 |
N |
1073355 |
01/13/2020 |
Groundwater |
The total coliform concentration in Groundwater Monitoring Well #11 equaled the limit set forth in Order No. R5-2014-0096 with a result 2.2 MPN. |
Violation |
N |
eSMR |
Merced WWTF |
397512 |
R5-2014-0096 |
N |
1070225 |
10/29/2019 |
Groundwater |
The nitrate nitrogen concentration in Groundwater Monitoring Well #11 exceeded the limit set forth in Order No. R5-2014-0096, with a result of 62mg/L. Monitoring Well #11 is located in the adjacent farmer¿s almond orchard to the east of the WWTF. |
Violation |
N |
eSMR |
Merced WWTF |
397512 |
R5-2014-0096 |
N |
1073359 |
01/13/2020 |
Groundwater |
The nitrate nitrogen concentration in Groundwater Monitoring Well #8 exceeded the limit set forth in Order No. R5-2014-0096 with a result of 17 mg/L. |
Violation |
N |
eSMR |
Merced WWTF |
397512 |
R5-2014-0096 |
N |
1077581 |
06/09/2020 |
Groundwater |
The nitrate nitrogen concentration in Groundwater Monitoring Well #1 exceeded the limit set forth in Order No. R5-2014-0096 with a result of 19 mg/L. |
Violation |
N |
eSMR |
Merced WWTF |
397512 |
R5-2014-0096 |
N |
1112907 |
12/12/2022 |
Groundwater |
The results for total coliform for groundwater MW #11 were >23 MPN/100mL. The Groundwater Limitations under Waste Discharge requirements page 15 of permit Order R5-2020-0014 are 2.2 MPN/mL. |
Violation |
N |
eSMR |
Merced WWTF |
438006 |
R5-2020-0014 |
N |
1073356 |
01/13/2020 |
Groundwater |
The total coliform concentration in Groundwater Monitoring Well #3 equaled the limit set forth in Order No. R5-2014-0096 with a result of 2.2 MPN. |
Violation |
N |
eSMR |
Merced WWTF |
397512 |
R5-2014-0096 |
N |
1112909 |
12/12/2022 |
Groundwater |
The results for total coliform for groundwater MW #1 were 5.1 MPN/100mL. The Groundwater Limitations under Waste Discharge requirements page 15 of permit Order R5-2020-0014 are 2.2 MPN/mL. |
Violation |
N |
eSMR |
Merced WWTF |
438006 |
R5-2020-0014 |
N |
1073354 |
01/13/2020 |
Groundwater |
The nitrate nitrogen concentration in Groundwater Monitoring Well #6 equaled the limit set forth in Order No. R5-2014-0096 with a result of 10 mg/L. |
Violation |
N |
eSMR |
Merced WWTF |
397512 |
R5-2014-0096 |
N |
1070224 |
10/28/2019 |
Groundwater |
The nitrate nitrogen concentration in Groundwater Monitoring Well #1 exceeded the limit set forth in Order No. R5-2014-0096, with a result of 14mg/L. Monitoring Well #1 is located on the east side of the Land Application Area. |
Violation |
N |
eSMR |
Merced WWTF |
397512 |
R5-2014-0096 |
N |
1066086 |
08/20/2019 |
Groundwater |
The nitrate nitrogen concentration in Groundwater Monitoring Well #7 exceeded the limit of 10 mg/L set forth in Order No. R5-2014-0096 with a result of 21 mg/L. |
Violation |
N |
eSMR |
Merced WWTF |
397512 |
R5-2014-0096 |
N |
1066089 |
08/19/2019 |
Groundwater |
The total coliform organisms for Groundwater Monitoring Well #9 exceeded the limit of 2.2 MPN set forth in Order No. R5-2014-0096 with a result of 9.2 MPN. |
Violation |
N |
eSMR |
Merced WWTF |
397512 |
R5-2014-0096 |
N |
1099637 |
10/28/2021 |
Deficient Monitoring |
The City of Merced was unable to report results for Tributyltin at effluent M-001 and receiving water R-002U1 due to multiple QC issues at the contracted laboratory for this project. |
Violation |
N |
eSMR |
Merced WWTF |
438006 |
R5-2020-0014 |
N |
1077580 |
06/10/2020 |
Groundwater |
The nitrate nitrogen concentration in Groundwater Monitoring Well #5 exceeded the limit set forth in Order No. R5-2014-0096 with a result of 21 mg/L. |
Violation |
N |
eSMR |
Merced WWTF |
397512 |
R5-2014-0096 |
N |
1070222 |
10/29/2019 |
Groundwater |
The nitrate nitrogen concentration in Groundwater Monitoring Well #7 exceeded the limit set forth in Order No. R5-2014-0096, with a result of 14mg/L. Monitoring Well #7 is located on the southwest corner of the former sludge drying beds. |
Violation |
N |
eSMR |
Merced WWTF |
397512 |
R5-2014-0096 |
N |
1099985 |
12/31/2021 |
Deficient Monitoring |
The City of Merced was deficient in collecting samples for alkalinity series, Iron, Sodium, and Potassium of the standard minerals sample list. |
Violation |
N |
eSMR |
Merced WWTF |
438006 |
R5-2020-0014 |
N |
1066088 |
08/19/2019 |
Groundwater |
The nitrate nitrogen concentration in Groundwater Monitoring Well #8 exceeded the limit of 10 mg/L set forth in Order No. R5-2014-0096 with a result of 20 mg/L. |
Violation |
N |
eSMR |
Merced WWTF |
397512 |
R5-2014-0096 |
N |
1118693 |
04/24/2023 |
Groundwater |
The total coliform organism limitation is 2.2 MPN/100mL and the result for monitoring well #2 was 5.1 MPN/100mL. |
Violation |
N |
eSMR |
Merced WWTF |
438006 |
R5-2020-0014 |
N |
1073357 |
01/13/2020 |
Groundwater |
The total coliform concentration in Groundwater Monitoring Well #9 exceeded the limit set forth in Order No. R5-2014-0096 with a result of 3.6 MPN. |
Violation |
N |
eSMR |
Merced WWTF |
397512 |
R5-2014-0096 |
N |
1123537 |
11/27/2023 |
Groundwater |
MW 9 resulted in a total coliform organism level of 12 MPN/100mL which exceeded the limitation of 2.2 MPN/100mL per Order No. R5-2020-0014 Section V.B.1. |
Violation |
N |
eSMR |
Merced WWTF |
438006 |
R5-2020-0014 |
N |
1066085 |
08/20/2019 |
Groundwater |
The nitrate nitrogen concentration in Groundwater Monitoring Well #5 exceeded the limit of 10 mg/L set forth in Order No. R5-2014-0096 with a result of 19 mg/L. |
Violation |
N |
eSMR |
Merced WWTF |
397512 |
R5-2014-0096 |
N |
1099983 |
11/15/2021 |
Groundwater |
Monitoring Well #9 exceeded the water quality limit for total coliforms of 2.2 MPN. The result was >23 MPN. |
Violation |
N |
eSMR |
Merced WWTF |
438006 |
R5-2020-0014 |
N |
1073351 |
01/14/2020 |
Groundwater |
The nitrate nitrogen concentration in Groundwater Monitoring Well #5 exceeded the limit set forth in Order No. R5-2014-0096 with a result of 26 mg/L. |
Violation |
N |
eSMR |
Merced WWTF |
397512 |
R5-2014-0096 |
N |
1099984 |
11/15/2021 |
Groundwater |
Groundwater Monitoring Well #10 exceeded the total coliform limit of 2.2 MPN. The result for coliforms was 9.2 MPN. |
Violation |
N |
eSMR |
Merced WWTF |
438006 |
R5-2020-0014 |
N |
1118692 |
04/24/2023 |
Groundwater |
The coliform organism limitation is 2.2MPN/100mL and the result for monitoring well #9 was greater than 23 MPN/100mL. |
Violation |
N |
eSMR |
Merced WWTF |
438006 |
R5-2020-0014 |
N |
1073352 |
01/13/2020 |
Groundwater |
The nitrate nitrogen concentration in Groundwater Monitoring Well #11 exceeded the limit set forth in Order No. R5-2014-0096 with a result of 65 mg/L. |
Violation |
N |
eSMR |
Merced WWTF |
397512 |
R5-2014-0096 |
N |
1097431 |
10/27/2021 |
Deficient Monitoring |
Attachment E section III A.2 Table E-2 Influent Monitoring. states BOD mg/L 24 hour composite 3/Week, and TSS mg/L 24 composite 3/week. On October 27th the influent composite sample was divided up with one half of the sample used for annual priority pollutant testing and the remnant used for the three times per week testing for BOD and TSS. The sample was mixed in the composite jug and dispense into two smaller containers, incomplete mixing caused a non-representative sample to be used for BOD and TSS. The result for BOD was 179 mg/L and TSS was 78 mg/L, both of these results are significantly lower than normal results. The BOD and TSS test results for this day was deleted and not reported on CIWQS. |
Violation |
N |
eSMR |
Merced WWTF |
438006 |
R5-2020-0014 |
N |
1073353 |
01/13/2020 |
Groundwater |
The nitrate nitrogen concentration in Groundwater Monitoring Well #1 exceeded the limit set forth in Order No. R5-2014-0096 with a result of 13 mg/L. |
Violation |
N |
eSMR |
Merced WWTF |
397512 |
R5-2014-0096 |
N |
1112910 |
12/12/2022 |
Groundwater |
The results for total coliform for groundwater MW #3 were >23 MPN/100mL. The Groundwater Limitations under Waste Discharge requirements page 15 of permit Order R5-2020-0014 are 2.2 MPN/mL. |
Violation |
N |
eSMR |
Merced WWTF |
438006 |
R5-2020-0014 |
N |
1120811 |
08/19/2023 |
Deficient Monitoring |
On August 18th the turbidity meter at FIL-002, which is post filtration, was left in an inoperable condition which caused an error in the continuous reading. The daily average and maximum reading for the 24 hour period are not reportable due to the inoperable state of the turbidity meter. |
Violation |
N |
eSMR |
Merced WWTF |
438006 |
R5-2020-0014 |
N |
1073358 |
01/14/2020 |
Groundwater |
The nitrate nitrogen concentration in Groundwater Monitoring Well #7 exceeded the limit set forth in Order No. R5-2014-0096 with a result of 31 mg/L. |
Violation |
N |
eSMR |
Merced WWTF |
397512 |
R5-2014-0096 |
N |
1070223 |
10/28/2019 |
Groundwater |
The nitrate nitrogen concentration in Groundwater Monitoring Well #8 exceeded the limit set forth in Order No. R5-2014-0096, with a result of 34mg/L. Monitoring Well #8 is located on the east side of Pond 56, just south of the former sludge drying beds. |
Violation |
N |
eSMR |
Merced WWTF |
397512 |
R5-2014-0096 |
N |
1077583 |
06/15/2020 |
Groundwater |
The nitrate nitrogen concentration in Groundwater Monitoring Well #11 exceeded the limit set forth in Order No. R5-2014-0096 with a result of 64 mg/L. |
Violation |
N |
eSMR |
Merced WWTF |
397512 |
R5-2014-0096 |
N |
1112911 |
12/13/2022 |
Groundwater |
The results for total coliform for groundwater MW #6 were >23 MPN/100mL. The Groundwater Limitations under Waste Discharge requirements page 15 of permit Order R5-2020-0014 are 2.2 MPN/mL. |
Violation |
N |
eSMR |
Merced WWTF |
438006 |
R5-2020-0014 |
N |
1077585 |
06/15/2020 |
Groundwater |
The total coliform concentration in Groundwater Monitoring Well #11 exceeded the limit set forth in Order No. R5-2014-0096 with a result of >23 MPN. |
Violation |
N |
eSMR |
Merced WWTF |
397512 |
R5-2014-0096 |
N |
1070221 |
10/29/2019 |
Groundwater |
The nitrate nitrogen concentration in Groundwater Monitoring Well #5 exceeded the limit set forth in Order No. R5-2014-0096, with a result of 24mg/L. Monitoring Well #5 is located on the northwest corner of the former sludge drying beds. |
Violation |
N |
eSMR |
Merced WWTF |
397512 |
R5-2014-0096 |
N |
1123538 |
11/28/2023 |
Deficient Monitoring |
The Nitrate (as N) concentration for MW 11 was 39 mg/L which exceeds the drinking water standards of 10 mg/L for Nitrate (as N). |
Violation |
N |
eSMR |
Merced WWTF |
438006 |
R5-2020-0014 |
N |
1112912 |
12/13/2022 |
Groundwater |
The results for nitrate as N for groundwater MW #5 were 16 mg/L. The Groundwater Limitations under Waste Discharge requirements page 15 of permit Order R5-2020-0014 refer to primary or secondary MCLs established in Title 22 of the CCR and the limit is 10 mg/L. |
Violation |
N |
eSMR |
Merced WWTF |
438006 |
R5-2020-0014 |
N |
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