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. |
1140765 |
07/15/2024 |
Deficient Monitoring |
Missing volumetric flowrate measurements from requirement I.A.3.a. from 4/23/2024 to 5/28/2024. |
Violation |
N |
Report |
Alpine Meadows & Deer Park |
148105 |
00-073 |
Y |
1139333 |
07/15/2024 |
Deficient Reporting |
Failure to submit Annual 2024 report |
Violation |
N |
Report |
Alpine Meadows & Deer Park |
148105 |
00-073 |
Y |
1137149 |
10/30/2024 |
Deficient Monitoring |
Requirement IV.C. Missing pH measurements from Ponds 2 and 3. |
Violation |
N |
Report |
Spalding Tract Sewer System |
307579 |
R6T-2006-0020 |
Y |
1134609 |
07/29/2024 |
Deficient Monitoring |
Incorrect number for IV.B.6. The total number of service connections and the number of new service connections during the monitoring period. Missing pH measurements for Ponds #2 and #3. for IV.C. Evaporation Pond Water Quality Monitoring. Groundwater gradient and flow direction are not labeled on the provided map. required by IV.D.3. Each quarter, the Discharger shall determine and report the groundwater gradient and flow direction based on the groundwater elevations within the monitoring wells just prior to purging at the time of sampling. |
Violation |
N |
Report |
Spalding Tract Sewer System |
307579 |
R6T-2006-0020 |
Y |
1134239 |
07/28/2024 |
Sanitary Sewer Overflow/Spill/ |
Type: Category 1 Spill; Pump Station Failure - Mechanical caused 50 gallons of sewage to spill from Manhole at 544 Fallen Leaf Lake RD to Paved Surface, Surface Water, Unpaved Surface |
Violation |
None |
SSO |
So. Tahoe Public Utility Dist. CS |
301290 |
2022-0103-DWQ |
N |
1131734 |
08/29/2024 |
BMP |
1) The deficient sediment control (e.g. drop inlet protection) BMPs and general housekeeping BMPs (e.g. sweeping) in and around the base lodge and Lot 2 need to be corrected. 2) The native surface road system is in good condition but effective tracking control BMPs need to be installed and maintained at native surfaced road/paved surface road interfaces. |
Violation |
None |
Inspection |
Alpine Meadows & Deer Park |
148105 |
00-073 |
N |
1131565 |
04/15/2024 |
Deficient Monitoring |
IX.A.1. Pretreatment Monitoring. The District must monitor and repeat annually, the following information: Significant industrial users, including names, addresses, categories, industrial pollutants, and volumes. Specifically missing industrial pollutants and volumes. IX.A.3.a. Pretreatment Monitoring. A summary of the District¿s pretreatment functions including, but not limited to: necessary legal authority. Missing necessary legal authority. |
Violation |
N |
Report |
STPUD WWTP |
132539 |
04-010 |
Y |
1130972 |
08/01/2024 |
Deficient Monitoring |
Missing lab results from water samples collected, only sample receipts provided. Requirement Section 3: Surface Water Monitoring Requirements. "During the spring snowmelt period (approximately April through the end of June), the Discharger shall collect grab samples from all monitoring stations on a weekly basis whenever the observed flow in the South Fork Squaw Creek immediately above its confluence with the North Fork Squaw Creek is above 20 cfs." |
Violation |
N |
Report |
Squaw Valley Ski Area |
144985 |
93-025 |
N |
1126116 |
05/28/2022 |
Basin Plan Prohibition |
Unauthorized discharge per requirements of NPDES permit Section III.D. and Section III.E. The detection in receiving water ORW-RHC3 consisted of five detections of Endothall, ranging from 6.4 ppb to 20 ppb, with the final detection occurring on 6/2/2022. |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1126114 |
05/29/2022 |
Basin Plan Prohibition |
Unauthorized discharge per requirements of NPDES permit Section III.D. and Section III.E. The detection in receiving water ORW-RHC2 consisted of nine detections of Endothall, ranging from 6.8 ppb to 82 ppb, with the final detection occurring on 6/23/2022. |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1126112 |
07/05/2022 |
Unauthorized Discharge |
Unauthorized discharge per requirements of NPDES permit Section III.D. and Section III.E. The detections in receiving water IRW9 consisted of six detections of Endothall ranging from 5.4 ppb to 63 ppb, with the final detection occurring on 8/9/2022. |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1126111 |
06/01/2022 |
Unauthorized Discharge |
Unauthorized discharge per requirements of NPDES permit Section III.D. and Section III.E. The detection in receiving water IRW8 consisted of one detection of Endothall, 65 ppb, occurring on 6/1/2022. |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1126110 |
05/28/2022 |
Unauthorized Discharge |
Unauthorized discharge per requirements of NPDES permit Section III.D. and Section III.E. The detections in receiving water IRW7 consisted of two detections of Endothall ranging from 61 ppb to 68 ppb, with the final detection occurring on 6/1/2022. |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1126109 |
06/14/2022 |
Unauthorized Discharge |
Unauthorized discharge per requirements of NPDES permit Section III.D. and Section III.E. The detections in receiving water IRW6 consisted of three detections of Endothall ranging from 9.5 ppb to 63 ppb, with the final detection occurring on 6/14/2022. |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1126108 |
06/14/2022 |
Unauthorized Discharge |
Unauthorized discharge per requirements of NPDES permit Section III.D. and Section III.E. The detection in receiving water IRW5 consisted of one detection of Endothall, 45 ppb, occurring on 6/14/2022. |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1126107 |
06/26/2022 |
Unauthorized Discharge |
Unauthorized discharge per requirements of NPDES permit Section III.D. and Section III.E. The detection in receiving water IRW2 consisted of one detection of Endothall, 6.9 ppb, occurring on 6/26/2022. |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1126106 |
06/17/2022 |
Unauthorized Discharge |
Unauthorized discharge per requirements of NPDES permit Section III.D. and Section III.E. The detection in receiving water IRW1 consisted of one detection of Endothall, 33 ppb, occurring on 6/17/2022. |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1126105 |
05/28/2022 |
Basin Plan Prohibition |
Unauthorized discharge per requirements of NPDES permit Section III.D. and Section III.E. The detections in receiving water ORW-RHC3 consisted of 53 detections of Triclopyr ranging from 1.0 ppb to 68 ppb, with the final detection occurring on 8/3/2022. |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1126102 |
06/02/2022 |
Basin Plan Prohibition |
Unauthorized discharge per requirements of NPDES permit Section III.D. and Section III.E. The detections in receiving water ORW-RHC2 consisted of 70 detections of Triclopyr ranging from 1.0 ppb to 8.8 ppb, with the final detection occurring on 9/4/2022. |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1126101 |
06/03/2022 |
Unauthorized Discharge |
Unauthorized discharge per requirements of NPDES permit Section III.D. and Section III.E. The detections in receiving water IRW6 consisted of 14 detections of Triclopyr ranging from 1.0 ppb to 160 ppb, with the final detection occurring on 9/6/2022. |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1126100 |
05/28/2022 |
Unauthorized Discharge |
Unauthorized discharge per requirements of NPDES permit Section III.D. and Section III.E. The detections in receiving water IRW8 consisted of 12 detections of Triclopyr ranging from 1.2 ppb to 400 ppb, with the final detection occurring on 8/10/2022. |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1126099 |
05/28/2022 |
Unauthorized Discharge |
Unauthorized discharge per requirements of NPDES permit Section III.D. and Section III.E. The detections in receiving water IRW7 consisted of 13 detections of Triclopyr ranging from 1.2 ppb to 350 ppb, with the final detection occurring on 8/19/2022. |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1126098 |
06/03/2022 |
Unauthorized Discharge |
Unauthorized discharge per requirements of NPDES permit Section III.D. and Section III.E. The detections in receiving water IRW5 consisted of 15 detections of Triclopyr ranging from 1.0 ppb to 94 ppb, with the final detection occurring on 9/6/2022. |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1126097 |
06/01/2022 |
Unauthorized Discharge |
Unauthorized discharge per requirements of NPDES permit Section III.D. and Section III.E. The detections in receiving water IRW4-FD consisted of 4 detections of Triclopyr ranging from 27 ppb to 42 ppb, with the final detection occurring on 6/21/2022. |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1126096 |
06/01/2022 |
Unauthorized Discharge |
Unauthorized discharge per requirements of NPDES permit Section III.D. and Section III.E. The detections in receiving water IRW4 consisted of 44 detections of Triclopyr ranging from 1.0 ppb to 69 ppb, with the final detection occurring on 9/11/2022. |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1126095 |
06/01/2022 |
Unauthorized Discharge |
Unauthorized discharge per requirements of NPDES permit Section III.D. and Section III.E. The detections in receiving water IRW3 consisted of 16 detections of Triclopyr ranging from 1.1 ppb to 320 ppb, with the final detection occurring on 9/11/2022. |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1126094 |
06/01/2022 |
Unauthorized Discharge |
Unauthorized discharge per requirements of NPDES permit Section III.D. and Section III.E. The detections in receiving water IRW2 consisted of 15 detections of Triclopyr ranging from 1.2 ppb to 53 ppb, with the final detection occurring on 9/4/2022. |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1126088 |
06/05/2022 |
Unauthorized Discharge |
Unauthorized discharge per requirements of NPDES permit Section III.D. and Section III.E. The detections in receiving water IRW1 consisted of 28 detections of Triclopyr ranging from 1.0 ppb to 27 ppb, with the final detection occurring on 9/9/2022. |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1126067 |
02/15/2024 |
Deficient Monitoring |
I.A.5. Missing the total daily volume, in million gallons, of wastewater flow to Harvey Place Reservoir (Quarters 1, 2, 3, 4). I.A.8. Missing the total daily volume, in million gallons, of treated wastewater released from Harvey Place Reservoir for delivery to the on-farm emergency disposal area (Quarters 1, 2, 3, 4). II. Reservoir Monitoring. Did not sample in January 2023 due to access issues (Quarter 1). III.A. Alpine County Surface Water Monitoring, West Fork Carson River. Did not sample SW-06 in March due to access issues (Quarter 1). III.B. Alpine County Surface Water Monitoring. Did not sample SW-02 due to access issues (Quarter 1), SW-07 due to no flow (Quarters 1, 4), SW-08 due to no flow (Quarter 3, 4). IV.A. & IV.A.2.b. Alpine County Groundwater Monitoring, Existing Groundwater Wells. Did not test for Total Dissolved Phosphorus at Stations GW-05, -08, -11, ACMW-24, -25, -26 (Quarters 1, 2, 3, 4) and did not sample ACMW-06S due to access issues (Quarter 1). VI. Lake Tahoe Basin Surface Water Monitoring. Did not sample in January and February at HVC-1, HVC-2, and HVC-3 due to access issues (Quarter 1). VII. & VII.B.2. Lake Tahoe Basin Groundwater Monitoring. Did not sample MW11 due to access issues (Quarters 1, 2, 3, 4). |
Violation |
N |
Report |
STPUD WWTP |
132539 |
04-010 |
Y |
1125072 |
02/21/2024 |
Unauthorized Discharge |
Plowed snow from East Lot and Bus parking Lot with entrained sediment placed/discharged directly into Squaw Creek/Wa She Shu Creek. |
Violation |
N |
Inspection |
Squaw Valley Ski Area |
144985 |
93-025 |
N |
1124322 |
03/01/2023 |
Late Report |
Report due on March 1, 2023, received on November 2, 2023 |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
455760 |
R6T-2022-0005 |
N |
1124300 |
07/27/2022 |
Basin Plan Prohibition |
Exceeded DO RWL of 5 mg/L twenty-three (23) times ranging from 2.64 to 4.89 mg/L from 7/27/2022 to 10/17/2022 at Site 14 where UVC and Triclopyr was applied. |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1124299 |
08/01/2022 |
Basin Plan Prohibition |
Exceeded DO RWL of 5 mg/L twenty-nine (29) times ranging from 2.01 to 4.99 mg/L from 8/1/2022 to 10/14/2022 at Site 13 where UVC and Triclopyr was applied. |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1124298 |
08/26/2022 |
Basin Plan Prohibition |
Exceeded DO RWL of 5 mg/L twenty-two (22) times ranging from 1.75 to 4.95 mg/L from 8/26/2022 to 10/14/2022 at Site 12 where UVC and Triclopyr was applied. |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1124297 |
08/26/2022 |
Basin Plan Prohibition |
Exceeded DO RWL of 5 mg/L fifteen (15) times ranging from 1.80 to 4.61 mg/L from 8/26/2022 to 9/7/2022 at Site 11 where UVC and Endothall was applied. |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1124296 |
08/29/2022 |
Basin Plan Prohibition |
Exceeded DO RWL of 5 mg/L twelve (12) times ranging from 2.22 to 4.82 mg/L from 8/29/2022 to 10/14/2022 at Site 10 where UVC and Endothall was applied. |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1124295 |
09/13/2022 |
Basin Plan Prohibition |
Exceeded DO RWL of 5 mg/L three (3) times ranging from 2.73 to 3.58 mg/L on 9/13/2022 at Site 9 where Triclopyr was applied. |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1124294 |
08/02/2022 |
Basin Plan Prohibition |
Exceeded DO RWL of 5 mg/L five (5) times ranging from 1.86 to 4.92 mg/L from 8/2/2022 to 9/28/2022 at Site 8 where Triclopyr was applied. |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1124293 |
08/02/2022 |
Basin Plan Prohibition |
Exceeded DO RWL of 5 mg/L thirty-two (32) times ranging from 1.26 to 4.78 mg/L from 8/2/2022 to 10/27/2022 at Site 5 where Triclopyr was applied. |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1124292 |
06/10/2022 |
Basin Plan Prohibition |
Exceeded DO RWL of 5 mg/L fifty-two (52) times ranging from 2.69 to 4.98 mg/L from 6/10/2022 to 10/31/2022 at Site 19 where Endothall was applied. |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1124291 |
08/23/2022 |
Basin Plan Prohibition |
Exceeded DO RWL of 5 mg/L seven (7) times ranging from 1.66 to 4.86 mg/L from 8/23/2022 to 9/6/2022 at Site 3 where Endothall was applied. |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1124290 |
08/30/2022 |
Basin Plan Prohibition |
Exceeded DO RWL of 5 mg/L six (6) times ranging from 2.54 to 4.95 mg/L from 8/30/2022 to 9/6/2022 at Site 2 where Endothall was applied. |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1124289 |
08/30/2022 |
Basin Plan Prohibition |
Exceeded DO RWL of 5 mg/L five (5) times ranging from 2.76 to 4.58 mg/L from 8/30/2022 to 9/6/2022 at Site 1 where Endothall was applied. |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1124187 |
06/13/2022 |
Basin Plan Prohibition |
Triclopyr Instantaneous Maximum limit is 400.0 ug/L and reported value was 1.1 ug/L at Contingency Monitoring Site 3 (CSTN103). |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
Y |
1124186 |
06/11/2022 |
Basin Plan Prohibition |
Triclopyr Instantaneous Maximum limit is 400.0 ug/L and reported value was 1.3 ug/L at Contingency Monitoring Site 3 (CSTN103). |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
Y |
1124184 |
06/03/2022 |
Basin Plan Prohibition |
Triclopyr Instantaneous Maximum limit is 400.0 ug/L and reported value was 1.6 ug/L at Contingency Monitoring Site 3 (CSTN103). |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
Y |
1124183 |
06/02/2022 |
Basin Plan Prohibition |
Triclopyr Instantaneous Maximum limit is 400.0 ug/L and reported value was 2.8 ug/L at Contingency Monitoring Site 3 (CSTN103). |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
Y |
1124182 |
05/30/2022 |
Basin Plan Prohibition |
Triclopyr Instantaneous Maximum limit is 400.0 ug/L and reported value was 1.1 ug/L at Contingency Monitoring Site 3 (CSTN103). |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
Y |
1123722 |
05/31/2022 |
Deficient Monitoring |
Failed to monitor hydrologic conditions in West Channel for the duration of the treatment event. The final measurement was taken during the final application of herbicide. |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1123145 |
12/17/2023 |
Unauthorized Discharge |
A spill occurred at the pipe connection between the wet well and the pump station. A 90 degree elbow piece of the piping system became detached. 1200 gallons was collected by Big Valley Sanitation who used a Vactor truck and water. The estimated volume of raw sewage collected is less than 200 gallons. |
Violation |
N |
Report |
Spalding Tract Sewer System |
307579 |
R6T-2006-0020 |
Y |
1122780 |
12/30/2022 |
Deficient Reporting |
no monitoring or reporting was done in 4th quarter of 2022 |
Violation |
N |
Report |
Markleeville Wstwtr Trtmnt Sys |
145323 |
95-022 |
N |
1122779 |
12/30/2022 |
Deficient Reporting |
No monitoring done in 4th quarter 2022 |
Violation |
N |
Report |
Markleeville Wstwtr Trtmnt Sys |
145323 |
95-022 |
N |
1122778 |
12/30/2022 |
Deficient Reporting |
No monitoring done in 4th quarter 2022 |
Violation |
N |
Report |
Markleeville Wstwtr Trtmnt Sys |
145323 |
95-022 |
N |
1119776 |
07/28/2023 |
Order Conditions |
The temporary bypass system operated by MPUD is in violation of Sanitary Sewer Systems General Order No. 2022-0103-DWQ, Section 5.19 Operation and Maintenance, which states: "To prevent discharges to the environment, the Enrollee shall maintain in good working order, and operate as designed, any facility or treatment and control system designed to contain sewage and convey it to a treatment plant." |
Violation |
N |
Inspection |
Markleeville Wstwtr Trtmnt Sys CS |
301282 |
2022-0103-DWQ |
Y |
1118695 |
05/01/2023 |
CAT1 |
Total Suspended Solids (TSS), Net Value 1-Hour Average (Mean) limit is 8 % and reported value was 12 % at EFF-002. |
Violation |
N |
eSMR |
Hot Creek Hatchery NPDES |
444177 |
R6V-2021-0014 |
N |
1118448 |
05/28/2022 |
Surface Water |
Endothall Instantaneous Maximum limit is 100.0 ug/L and reported value was 130 ug/L at IRW8 - Combined. |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1118416 |
06/28/2022 |
Surface Water |
Endothall Instantaneous Maximum limit is 100.0 ug/L and reported value was 220 ug/L at IRW9 - Combined. |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1118415 |
06/21/2022 |
Surface Water |
Endothall Instantaneous Maximum limit is 100.0 ug/L and reported value was 380 ug/L at IRW9 - Combined. |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1118414 |
06/14/2022 |
Surface Water |
Endothall Instantaneous Maximum limit is 100.0 ug/L and reported value was 470 ug/L at IRW9 - Combined. |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1118413 |
06/07/2022 |
Surface Water |
Endothall Instantaneous Maximum limit is 100.0 ug/L and reported value was 350 ug/L at IRW9 - Combined. |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1118412 |
06/13/2022 |
Surface Water |
Endothall Instantaneous Maximum limit is 100.0 ug/L and reported value was 220 ug/L at IRW4-FD - Combined. |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1118411 |
06/03/2022 |
Surface Water |
Endothall Instantaneous Maximum limit is 100.0 ug/L and reported value was 460 ug/L at IRW9 - Combined. |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1118410 |
06/05/2022 |
Surface Water |
Endothall Instantaneous Maximum limit is 100.0 ug/L and reported value was 440 ug/L at IRW4-FD - Combined. |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1118409 |
06/01/2022 |
Surface Water |
Endothall Instantaneous Maximum limit is 100.0 ug/L and reported value was 450 ug/L at IRW4-FD - Combined. |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1118407 |
06/07/2022 |
Surface Water |
Endothall Instantaneous Maximum limit is 100.0 ug/L and reported value was 260 ug/L at IRW5 - combined. |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1118406 |
06/03/2022 |
Surface Water |
Endothall Instantaneous Maximum limit is 100.0 ug/L and reported value was 120 ug/L at IRW5 - combined. |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1118404 |
06/14/2022 |
Surface Water |
Endothall Instantaneous Maximum limit is 100.0 ug/L and reported value was 120 ug/L at IRW4 - combined. |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1118403 |
06/13/2022 |
Surface Water |
Endothall Instantaneous Maximum limit is 100.0 ug/L and reported value was 230 ug/L at IRW4 - combined. |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1118402 |
06/10/2022 |
Surface Water |
Endothall Instantaneous Maximum limit is 100.0 ug/L and reported value was 390 ug/L at IRW4 - combined. |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1118401 |
06/07/2022 |
Surface Water |
Endothall Instantaneous Maximum limit is 100.0 ug/L and reported value was 490 ug/L at IRW4 - combined. |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1118400 |
06/05/2022 |
Surface Water |
Endothall Instantaneous Maximum limit is 100.0 ug/L and reported value was 490 ug/L at IRW4 - combined. |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1118399 |
06/03/2022 |
Surface Water |
Endothall Instantaneous Maximum limit is 100.0 ug/L and reported value was 470 ug/L at IRW4 - combined. |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1118398 |
06/01/2022 |
Surface Water |
Endothall Instantaneous Maximum limit is 100.0 ug/L and reported value was 460 ug/L at IRW4 - combined. |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1118397 |
05/30/2022 |
Surface Water |
Endothall Instantaneous Maximum limit is 100.0 ug/L and reported value was 270 ug/L at IRW4 - combined. |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1118394 |
06/13/2022 |
Surface Water |
Endothall Instantaneous Maximum limit is 100.0 ug/L and reported value was 190 ug/L at IRW3 - combined. |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1118393 |
06/05/2022 |
Surface Water |
Endothall Instantaneous Maximum limit is 100.0 ug/L and reported value was 170 ug/L at IRW3 - combined. |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1118390 |
06/01/2022 |
Surface Water |
Endothall Instantaneous Maximum limit is 100.0 ug/L and reported value was 110 ug/L at IRW3 - combined. |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1118389 |
06/13/2022 |
Surface Water |
Endothall Instantaneous Maximum limit is 100.0 ug/L and reported value was 350 ug/L at IRW2 - combined. |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1118386 |
06/05/2022 |
Surface Water |
Endothall Instantaneous Maximum limit is 100.0 ug/L and reported value was 440 ug/L at IRW2 - combined. |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1118385 |
06/01/2022 |
Surface Water |
Endothall Instantaneous Maximum limit is 100.0 ug/L and reported value was 510 ug/L at IRW2 - combined. |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1118384 |
06/10/2022 |
Surface Water |
Endothall Instantaneous Maximum limit is 100.0 ug/L and reported value was 690 ug/L at IRW1 - combined. |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1118383 |
06/13/2022 |
Surface Water |
Endothall Instantaneous Maximum limit is 100.0 ug/L and reported value was 500 ug/L at IRW1 - combined. |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1118382 |
06/05/2022 |
Surface Water |
Endothall Instantaneous Maximum limit is 100.0 ug/L and reported value was 870 ug/L at IRW1 - combined. |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1118381 |
06/03/2022 |
Surface Water |
Endothall Instantaneous Maximum limit is 100.0 ug/L and reported value was 1000 ug/L at IRW1 - combined. |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1118378 |
05/30/2022 |
Surface Water |
Endothall Instantaneous Maximum limit is 100.0 ug/L and reported value was 110 ug/L at IRW1 - combined |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
N |
1118001 |
06/01/2022 |
Surface Water |
Endothal Instantaneous Maximum limit is 100.0 ug/L and reported value was 1000.0 ug/L at IRW1 - combined. |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
Y |
1117912 |
06/02/2022 |
Basin Plan Prohibition |
Triclopyr Instantaneous Maximum limit is 400.0 ug/L and reported value was 1.6 ug/L at Contingency Lakeward:123 and 103 (CSTN104). |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
Y |
1117911 |
06/21/2022 |
Basin Plan Prohibition |
Triclopyr Instantaneous Maximum limit is 400.0 ug/L and reported value was 1.1 ug/L at Contingency Monitoring Site 3 (CSTN103) |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
Y |
1117899 |
06/28/2022 |
Surface Water |
Endothal Instantaneous Maximum limit is 100.0 ug/L and reported value was 220.0 ug/L at Site 19 - Surface. |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
Y |
1117898 |
06/21/2022 |
Surface Water |
Endothal Instantaneous Maximum limit is 100 ug/L and reported value was 360 ug/L at Site 19 - Surface. |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
Y |
1117895 |
06/13/2022 |
Basin Plan Prohibition |
Endothal Instantaneous Maximum limit is 100.0 ug/L and reported value was 8.3 ug/L at Contingency Monitoring Site 2 (CSTN123). |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
Y |
1117894 |
05/30/2022 |
Basin Plan Prohibition |
Endothall Instantaneous Maximum limit is 100.0 ug/L and reported value was 10 ug/L at Contingency Monitoring Site 2 (CSTN123). |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
Y |
1117893 |
05/31/2022 |
Basin Plan Prohibition |
Endothall Instantaneous Maximum limit is 100.0 ug/L and reported value was 6.4 ug/L at Contingency Monitoring Site 2 (CSTN123). |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
Y |
1117892 |
06/08/2022 |
Basin Plan Prohibition |
Endothal Instantaneous Maximum limit is 100.0 ug/L and reported value was 7.5 ug/L at Contingency Monitoring Site 2 (CSTN123). |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
Y |
1117891 |
06/07/2022 |
Basin Plan Prohibition |
Endothal Instantaneous Maximum limit is 100.0 ug/L and reported value was 7.4 ug/L at Contingency Monitoring Site 2 (CSTN123). |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
Y |
1117890 |
05/29/2022 |
Basin Plan Prohibition |
Endothall Instantaneous Maximum limit is 100.0 ug/L and reported value was 29 ug/L at Contingency Monitoring Site 2 (CSTN123). |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
Y |
1117888 |
06/02/2022 |
Surface Water |
Endothal Instantaneous Maximum limit is 100.0 ug/L and reported value was 115.0 ug/L at Receiving Water Site 2. Sample results of 110 and 120 ug/L were averaged and followed permit guidance in Section V.E.5 of Attachment E. |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
Y |
1117887 |
06/10/2022 |
Surface Water |
Endothal Instantaneous Maximum limit is 100.0 ug/L and reported value was 110.0 ug/L at Receiving Water Site 2 (ORW-RHC2) |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
Y |
1117886 |
06/08/2022 |
Surface Water |
Endothal Instantaneous Maximum limit is 100.0 ug/L and reported value was 140.0 ug/L at Receiving Water Site 2 (ORW-RHC2). |
Violation |
None |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
Y |
1117880 |
06/07/2022 |
Surface Water |
Endothal Instantaneous Maximum limit is 100.0 ug/L and reported value was 110.0 ug/L at Receiving Water Site 2 (ORW-RHC2) |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
Y |
1117875 |
05/28/2022 |
Surface Water |
Endothal Instantaneous Maximum limit is 100.0 ug/L and reported value was 210.0 ug/L at Receiving Water Site 2 (ORW-RHC2) |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
Y |
1117565 |
05/24/2023 |
Unauthorized Discharge |
Partial flow from the raceway ponds were bypassing the settling pond treatment system by entering into the receiving water due to a break in the plastic covered wooden cap. LWB staff requested the cap to be repaired. DFW staff indicated they would repair it later that day or the next day. |
Violation |
None |
Inspection |
Fish Springs Fish Hatch NPDES |
401623 |
R6V-2015-0034 |
N |
1116061 |
04/28/2023 |
Sanitary Sewer Overflow/Spill/ |
Type: Category 3. Root Intrusion caused 200.0 gallons of sewage to spill from Lateral Clean Out (Private);Sewage coming out of the Private Cleanout at 1073 Aspenwald Ave to Drainage Channel. No surface water body affected. |
Violation |
N |
SSO |
So. Tahoe Public Utility Dist. CS |
301290 |
2022-0103-DWQ |
Y |
1106880 |
08/05/2022 |
Unauthorized Discharge |
Discharge of approximately 10 gallons of hydraulic fluid into the surface waters of the Tahoe Keys lagoons from the operation of the harvesting equipment |
Violation |
N |
Complaint |
Tahoe Keys POA |
397482 |
R6T-2014-0059 |
Y |
1106854 |
04/01/2022 |
Late Report |
LMCAP not received by April 1, 2022 as required per the NPDES Order No. CA6202201 in Section VII.B. |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
Y |
1106850 |
06/28/2022 |
Unauthorized Discharge |
Receiving Water Limitation exceedances per requirements of NPDES Permit section VIII.A.2.K and Permit Attachment E, Sections V. G. 1-2. The TA19 exceedances consisted of Endothall sample concentrations of 360 ppb at 21 days after treatment (DAT) and 220 ppb at 28 DAT that were above the RWL (100 ppb). |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
Y |
1106849 |
05/28/2022 |
Unauthorized Discharge |
unauthorized discharge at compliance monitoring site ORW-RHC-2. Nature of the discharge was Endothall pesticides active ingredient.The event appears to have been caused by high wind gusts occurring sometime during the approach/passing of a weather front the night of May 27/morning of May 28 that resulted in the center seams of the double turbidity curtains separating at the bottom at CMT Project Site 2. The exact time of curtains failure is unknown. No dead or distressed organisms were observed by either the water quality monitoring team or TKPOA representatives that visited the Site 2 curtain failure.The location of the failure was the set of double turbidity curtains at Site 2. Both curtains consisted of two lengths of curtain connected at a middle seam per manufacturers? specifications. Each curtain seam was reportedly sealed by overlapping and rolling the two vertical curtain edges in the middle and clipping/zip tying per specifications. Visual observations at approximately 11am on May 28 showed some dye concentrations (see attached photo) between the two curtains, but partly cloudy skies made comparisons with the treated area difficult. Dye was not visually evident lake side of the double turbidity curtains. Initial affected area appeared limited to the immediate vicinity of the double turbidity curtains. Subsequent days monitoring indicated transient, degrading plume to the east of Site 2. |
Violation |
N |
Report |
Tahoe Keys Lagoons Aquatic Weeds Control Methods Test |
446429 |
R6T-2022-0004 |
Y |
1094138 |
06/11/2021 |
Order Conditions |
Second violation observed 6/11/21. Staff observed discharge from snow storage area in East Lot to adjacent drainage swale tributary to Squaw Creek. Violates order condition I.C.12. |
Violation |
N |
Inspection |
Squaw Valley Ski Area |
144985 |
93-025 |
N |
1094137 |
06/11/2021 |
Order Conditions |
Staff observed erosion and sediment discharge from Shirley Lake road to water course tributary to Squaw Creek. Violates order condition I.C.9. |
Violation |
N |
Inspection |
Squaw Valley Ski Area |
144985 |
93-025 |
N |
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