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. |
1135184 |
10/21/2024 |
Late Report |
Annual SMR ( PROGRPT ) (WDR VI.C.7.a) report for 2023 (2010166) was due on 20-OCT-24 |
Violation |
None |
Report |
Mountain House WWTP |
416414 |
R5-2017-0119 |
N |
1135183 |
10/21/2024 |
Late Report |
Annual SMR ( PROGRPT ) (WDR VI.C.3.a) report for 2023 (2010094) was due on 20-OCT-24 |
Violation |
None |
Report |
Mountain House WWTP |
416414 |
R5-2017-0119 |
N |
1132936 |
08/14/2024 |
OEV |
pH Instantaneous Minimum limit is 6.5 SU and reported value was 5.8 SU at EFF-001. |
Violation |
N |
eSMR |
Mountain House WWTP |
453528 |
R5-2023-0033 |
N |
1131509 |
07/30/2024 |
OEV |
pH Instantaneous Minimum limit is 6.5 SU and reported value was 6.3 SU at EFF-001. |
Violation |
N |
eSMR |
Mountain House WWTP |
453528 |
R5-2023-0033 |
N |
1131508 |
07/21/2024 |
OEV |
pH Instantaneous Minimum limit is 6.5 SU and reported value was 6.4 SU at EFF-001. |
Violation |
N |
eSMR |
Mountain House WWTP |
453528 |
R5-2023-0033 |
N |
1131507 |
08/20/2024 |
OEV |
pH Instantaneous Minimum limit is 6.5 SU and reported value was 6.4 SU at EFF-001. |
Violation |
N |
eSMR |
Mountain House WWTP |
453528 |
R5-2023-0033 |
N |
1131104 |
06/30/2024 |
Order Conditions |
The Discharger violated the UV system operating specification for UV dose contained in the WDRs/NOA, as listed in Table C. The Discharger stated that they lowered the target dose to 80 mJ/cm2 according to new MBR process guidelines rather than maintaining permit requirement of 100 mJ/cm2. The Discharger increased the target dose back to 105 mJ/cm2 when they realized the permit limit had not been amended. After returning to the higher target dose, the Discharger noted average dose was still dipping below the setpoint and identified several UVI sensors that were causing the dose to be calculated artificially low. The Discharger replaced the faulty sensors in July 2024 and UVI dose calculations are now above the 100 mJ/cm2 permit requirement. |
Violation |
N |
Report |
Mountain House WWTP |
453528 |
R5-2023-0033 |
Y |
1131103 |
05/31/2024 |
Deficient Monitoring |
The Discharger stated the missing temperature results at EFF-002 during May 2024 were due to a miscommunication between the programmable logic controller (PLC) and the supervisory control and data acquisition (SCADA) system. The miscommunication was corrected on 29 May 2024 and EFF-002 temperature monitoring and reporting returned to normal operation. |
Violation |
N |
Report |
Mountain House WWTP |
453528 |
R5-2023-0033 |
Y |
1131102 |
05/31/2024 |
Order Conditions |
The Discharger violated the UV system operating specification for UV dose contained in the WDRs/NOA, as listed in Table C. The Discharger stated that they lowered the target dose to 80 mJ/cm2 according to new MBR process guidelines rather than maintaining permit requirement of 100 mJ/cm2. The Discharger increased the target dose back to 105 mJ/cm2 when they realized the permit limit had not been amended. After returning to the higher target dose, the Discharger noted average dose was still dipping below the setpoint and identified several UVI sensors that were causing the dose to be calculated artificially low. The Discharger replaced the faulty sensors in July 2024 and UVI dose calculations are now above the 100 mJ/cm2 permit requirement. |
Violation |
N |
Report |
Mountain House WWTP |
453528 |
R5-2023-0033 |
Y |
1131101 |
04/30/2024 |
Order Conditions |
The Discharger violated the UV system operating specification for UV dose contained in the WDRs/NOA, as listed in Table C. The Discharger stated that they lowered the target dose to 80 mJ/cm2 according to new MBR process guidelines rather than maintaining permit requirement of 100 mJ/cm2. The Discharger increased the target dose back to 105 mJ/cm2 when they realized the permit limit had not been amended. After returning to the higher target dose, the Discharger noted average dose was still dipping below the setpoint and identified several UVI sensors that were causing the dose to be calculated artificially low. The Discharger replaced the faulty sensors in July 2024 and UVI dose calculations are now above the 100 mJ/cm2 permit requirement. |
Violation |
N |
Report |
Mountain House WWTP |
453528 |
R5-2023-0033 |
Y |
1131100 |
03/31/2024 |
Order Conditions |
The Discharger violated the UV system operating specification for UV dose contained in the WDRs/NOA, as listed in Table C. The Discharger stated that they lowered the target dose to 80 mJ/cm2 according to new MBR process guidelines rather than maintaining permit requirement of 100 mJ/cm2. The Discharger increased the target dose back to 105 mJ/cm2 when they realized the permit limit had not been amended. After returning to the higher target dose, the Discharger noted average dose was still dipping below the setpoint and identified several UVI sensors that were causing the dose to be calculated artificially low. The Discharger replaced the faulty sensors in July 2024 and UVI dose calculations are now above the 100 mJ/cm2 permit requirement. |
Violation |
N |
Report |
Mountain House WWTP |
453528 |
R5-2023-0033 |
Y |
1131099 |
03/19/2024 |
Deficient Monitoring |
The Discharger stated the effluent pH meter would not maintain calibration and was providing inaccurate results from 06 February 2024 through 19 March 2024. A combination of daily and hourly grab samples were collected for pH during this time period. The continuous effluent pH meter probe was replaced on 19 March 2024. |
Violation |
N |
Report |
Mountain House WWTP |
453528 |
R5-2023-0033 |
Y |
1131098 |
02/29/2024 |
Deficient Monitoring |
The Discharger stated the effluent pH meter would not maintain calibration and was providing inaccurate results from 06 February 2024 through 19 March 2024. A combination of daily and hourly grab samples were collected for pH during this time period. The continuous effluent pH meter probe was replaced on 19 March 2024. |
Violation |
N |
Report |
Mountain House WWTP |
453528 |
R5-2023-0033 |
Y |
1131097 |
02/07/2024 |
Deficient Monitoring |
Influent pH not continuously performed |
Violation |
N |
Report |
Mountain House WWTP |
453528 |
R5-2023-0033 |
Y |
1131095 |
02/29/2024 |
Order Conditions |
The Discharger violated the UV system operating specification for UV dose contained in the WDRs/NOA, as listed in Table C. The Discharger stated that they lowered the target dose to 80 mJ/cm2 according to new MBR process guidelines rather than maintaining permit requirement of 100 mJ/cm2. The Discharger increased the target dose back to 105 mJ/cm2 when they realized the permit limit had not been amended. After returning to the higher target dose, the Discharger noted average dose was still dipping below the setpoint and identified several UVI sensors that were causing the dose to be calculated artificially low. The Discharger replaced the faulty sensors in July 2024 and UVI dose calculations are now above the 100 mJ/cm2 permit requirement. |
Violation |
N |
Report |
Mountain House WWTP |
453528 |
R5-2023-0033 |
Y |
1131094 |
03/06/2024 |
OEV |
pH Instantaneous Minimum limit is 6.5 SU and reported value was 6.2 SU at EFF-001. |
Violation |
None |
Report |
Mountain House WWTP |
453528 |
R5-2023-0033 |
Y |
1131093 |
03/05/2024 |
OEV |
pH Instantaneous Minimum limit is 6.5 SU and reported value was 6.2 SU at EFF-001. |
Violation |
None |
Report |
Mountain House WWTP |
453528 |
R5-2023-0033 |
Y |
1131092 |
03/04/2024 |
OEV |
pH Instantaneous Minimum limit is 6.5 SU and reported value was 6.4 SU at EFF-001. |
Violation |
None |
Report |
Mountain House WWTP |
453528 |
R5-2023-0033 |
Y |
1131091 |
03/01/2024 |
OEV |
pH Instantaneous Minimum limit is 6.5 SU and reported value was 6.2 SU at EFF-001. |
Violation |
N |
Report |
Mountain House WWTP |
453528 |
R5-2023-0033 |
Y |
1131090 |
02/24/2024 |
OEV |
pH Instantaneous Minimum limit is 6.5 SU and reported value was 6.4 SU at EFF-001. |
Violation |
None |
Report |
Mountain House WWTP |
453528 |
R5-2023-0033 |
Y |
1131089 |
02/15/2024 |
OEV |
pH Instantaneous Minimum limit is 6.5 SU and reported value was 6.4 SU at EFF-001. |
Violation |
N |
Report |
Mountain House WWTP |
453528 |
R5-2023-0033 |
Y |
1131088 |
02/06/2024 |
OEV |
pH Instantaneous Minimum limit is 6.5 SU and reported value was 6.4 SU at EFF-001. |
Violation |
N |
Report |
Mountain House WWTP |
453528 |
R5-2023-0033 |
Y |
1131087 |
01/31/2024 |
Deficient Monitoring |
The Discharger stated the missed monthly sampling at INF-001 and EFF-001 in January 2024 was due to a changeover in staffing and an error in the Water Information Management Solution (WIMS) software. The errors were corrected, and monthly sampling was conducted according to the MRP during the subsequent monitoring periods. |
Violation |
N |
Report |
Mountain House WWTP |
453528 |
R5-2023-0033 |
Y |
1131086 |
01/31/2024 |
Deficient Monitoring |
The Discharger stated the missed monthly sampling at INF-001 and EFF-001 in January 2024 was due to a changeover in staffing and an error in the Water Information Management Solution (WIMS) software. The errors were corrected, and monthly sampling was conducted according to the MRP during the subsequent monitoring periods. |
Violation |
N |
Report |
Mountain House WWTP |
453528 |
R5-2023-0033 |
Y |
1131085 |
01/31/2024 |
Order Conditions |
The Discharger violated the UV system operating specification for UV dose contained in the WDRs/NOA, as listed in Table C. The Discharger stated that they lowered the target dose to 80 mJ/cm2 according to new MBR process guidelines rather than maintaining permit requirement of 100 mJ/cm2. The Discharger increased the target dose back to 105 mJ/cm2 when they realized the permit limit had not been amended. After returning to the higher target dose, the Discharger noted average dose was still dipping below the setpoint and identified several UVI sensors that were causing the dose to be calculated artificially low. The Discharger replaced the faulty sensors in July 2024 and UVI dose calculations are now above the 100 mJ/cm2 permit requirement. |
Violation |
N |
Report |
Mountain House WWTP |
453528 |
R5-2023-0033 |
Y |
1128632 |
06/02/2024 |
Late Report |
Annual SMR ( PROGRPT ) (WDR VI.C.3.c) report for 2023 (2010133) was due on 01-JUN-24 |
Violation |
None |
Report |
Mountain House WWTP |
416414 |
R5-2017-0119 |
N |
1126792 |
03/06/2024 |
CAT2 |
Dichlorobromomethane Monthly Average limit is 1.7 ug/L and reported value was 3.49 ug/L at EFF-001. |
Violation |
N |
eSMR |
Mountain House WWTP |
453528 |
R5-2023-0033 |
Y |
1125444 |
02/29/2024 |
CAT1 |
Nitrite Plus Nitrate (as N) Monthly Average limit is 10 mg/L and reported value was 17.7 mg/L at EFF-001. |
Violation |
N |
eSMR |
Mountain House WWTP |
453528 |
R5-2023-0033 |
Y |
1125443 |
02/14/2024 |
CAT1 |
Nitrite Plus Nitrate (as N) Weekly Average limit is 16 mg/L and reported value was 17.7 mg/L at EFF-001. |
Violation |
N |
eSMR |
Mountain House WWTP |
453528 |
R5-2023-0033 |
Y |
1125442 |
02/03/2024 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 15 mg/L and reported value was 18.2 mg/L at EFF-001. |
Violation |
N |
eSMR |
Mountain House WWTP |
453528 |
R5-2023-0033 |
Y |
1124692 |
01/26/2024 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 4.5 MPN/100 mL at UVS-001. |
Violation |
N |
eSMR |
Mountain House WWTP |
453528 |
R5-2023-0033 |
Y |
1124691 |
01/25/2024 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 4.5 MPN/100 mL at UVS-001. |
Violation |
N |
eSMR |
Mountain House WWTP |
453528 |
R5-2023-0033 |
Y |
1124690 |
01/31/2024 |
CAT1 |
Total Suspended Solids (TSS) Monthly Average (Mean) limit is 10 mg/L and reported value was 20.5 mg/L at EFF-001. |
Violation |
N |
eSMR |
Mountain House WWTP |
453528 |
R5-2023-0033 |
Y |
1124689 |
01/30/2024 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 4.5 MPN/100 mL at UVS-001. |
Violation |
N |
eSMR |
Mountain House WWTP |
453528 |
R5-2023-0033 |
Y |
1124688 |
01/07/2024 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 15 mg/L and reported value was 17.3 mg/L at EFF-001. |
Violation |
N |
eSMR |
Mountain House WWTP |
453528 |
R5-2023-0033 |
Y |
1124687 |
01/21/2024 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 15 mg/L and reported value was 22.8 mg/L at EFF-001. |
Violation |
N |
eSMR |
Mountain House WWTP |
453528 |
R5-2023-0033 |
Y |
1124686 |
01/31/2024 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 13 MPN/100 mL at UVS-001. |
Violation |
N |
eSMR |
Mountain House WWTP |
453528 |
R5-2023-0033 |
Y |
1124685 |
01/28/2024 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 15 mg/L and reported value was 31.1 mg/L at EFF-001. |
Violation |
N |
eSMR |
Mountain House WWTP |
453528 |
R5-2023-0033 |
Y |
1124268 |
02/02/2024 |
Late Report |
Annual SMR ( PROGRPT ) (MRP X.D.3) report for 2023 (2010041) was due on 01-FEB-24 |
Violation |
None |
Report |
Mountain House WWTP |
416414 |
R5-2017-0119 |
N |
1124267 |
02/02/2024 |
Late Report |
Annual SMR ( MONNPDES ) report for 2023 (2009893) was due on 01-FEB-24 |
Violation |
None |
Report |
Mountain House WWTP |
416414 |
R5-2017-0119 |
N |
1124247 |
02/02/2024 |
Late Report |
Annual SMR ( MONNPDES ) report for 2023 (2741197) was due on 01-FEB-24 |
Violation |
None |
Report |
Mountain House WWTP |
453528 |
R5-2023-0033 |
N |
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