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General Information
Party ID Party Name Party Classification Mailing Address Work Phone Email/Website
45209 Tahoe Keys POA Privately-Owned Business 356 Ala Wai Boulevard South Lake Tahoe, CA 96150 None None
  
  
  
  
Expand/Contract Related Places
Related Places
Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date
879008 Tahoe Keys Lagoons Aquatic Weeds Control Methods Test El Dorado 6A Facility Operator 01/26/2022 None
871437 Cove 3C Tahoe Keys Marina El Dorado 6A Dredge/Fill Site Owner 01/06/2021 None
857673 East Channel Bulkhead Repair El Dorado 6A Dredge/Fill Site Owner 04/16/2019 None
852214 TKPOA Laminar FLow El Dorado 6A Dredge/Fill Site Owner 10/31/2018 None
847283 Tahoe Keys-Bavarian Isle Bulkhead Repair El Dorado 6A Dredge/Fill Site Owner 05/17/2018 None
843484 TKPOA Shoreline El Dorado 6A Dredge/Fill Site Owner 01/02/2018 None
841488 East Channel Bulkhead Replacement El Dorado 6A Dredge/Fill Site Owner 11/09/2017 None
829632 TKPOA Boat Ramp Extensions El Dorado 6A Dredge/Fill Site Owner 11/03/2016 None
808201 Tahoe Keys-West Channel Dredge and Beach Replenishment El Dorado 6A Dredge/Fill Site Owner 08/05/2014 None
272042 West Channel Dredging El Dorado 6A Facility Owner 04/13/1989 None
272041 West Channel El Dorado 6A Dredge/Fill Site Owner 05/22/2003 None
262824 Tahoe Keys POA El Dorado 6A Facility Owner 01/27/1998 None
215969 Coves South 4 and 5 El Dorado 6A Facility Owner 04/09/1987 None
Total Related Places: 13
  
  
  
  
Expand/Contract Related Parties
Related Parties
Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification
644477 Hallie Kirkingburg Person Legally Responsible Official 06/05/2023 None None
569468 James Brooks Person Employee 11/09/2017 None None
569468 James Brooks Person Legally Responsible Official 11/08/2017 None None
560368 Kirk Wooldridge Person Legally Responsible Official 11/03/2016 06/01/2022 None
547957 Colleen Shade Person Legally Responsible Official 08/05/2014 None None
306418 Greg Trishler Person Interested Party 03/27/2006 None None
Total Related Parties: 6
  
  
  
  
Expand/Contract Regulatory Measures
Regulatory Measures (non-enforcement)
Reg. Measure ID Regulatory Measure Type Region WDID Status Program Order No. RM Effective Date RM Termination Date Relationship Relationship Start Date Relationship End Date Amended?
455760 NPDES Permit 6T 6A091701001 Active NPDNONMUNIPRCS R6T-2022-0005 02/25/2022 None Discharger 02/06/2024 None N
449227 13383 (Non-Enforcement) 6T 6A091701001 Active NPDNONMUNIPRCS R6T-2022-0043 09/02/2022 None Discharger 09/16/2022 None N
446429 NPDES Permit 6T 6A091701001 Active NPDNONMUNIPRCS R6T-2022-0004 02/14/2022 None Discharger 01/26/2022 None N
441814 401 Certification 6T 6A092101001 Active CERFILLEXC R6T-2021-0031 08/13/2021 None Discharger 01/06/2021 None N
435506 13267 Letter (Non-Enforcement) 6T None Historical ENF13267 R6T-2019-0231 04/03/2019 05/03/2019 Discharger 11/14/2019 None N
429985 401 Certification 6T 6A091903002 Active CERFILLEXC R6T-2020-0040 07/31/2020 None Discharger 04/16/2019 None N
425989 Enrollee - 401 Certification 6T 6A091810005 Historical CERFILLEXC RGP 8 01/22/2019 04/02/2022 Discharger 10/31/2018 None N
421442 401 Certification 6T 6A091805002 Historical CERFILLEXC R6T-2018-0039 08/22/2018 10/02/2019 Discharger 05/17/2018 None N
418542 401 Certification 6T None Historical CERFILLEXC R6T-2018-0011 03/27/2018 10/10/2019 Discharger 01/02/2018 None N
410099 Enrollee - NPDES 6T 6A090089000 Active INDSTW R6T-2016-0038 11/01/2016 None Discharger 11/04/2016 None N
397576 401 Certification 6T 6A091407003 Historical CERDREDGE R6T-2014-0080 09/05/2014 09/05/2019 Discharger 08/05/2014 None Y
397482 WDR 6T 6A090089000 Active REC R6T-2014-0059 07/17/2014 None Discharger 07/28/2014 None N
203318 Enrollee 6T 6A090305004 Historical INDSTW 00-036 12/11/2003 12/15/2004 Discharger 09/01/2005 None N
170267 401 Certification 6T 6A090305004 Historical CERFILLEXC None None None Discharger 06/17/2005 None N
145669 NPDES Permit 6T 6A090089000 Historical NPDESWW 98-035 06/04/1998 06/08/2004 Discharger 06/04/1998 None N
145651 WDR 6T 6A098704100 Historical WDR 97-08801 09/04/1997 None Discharger 09/04/1997 None N
145118 WDR 6T 6A098804008 Historical WDR 89-138 06/08/1989 None Discharger 06/08/1989 None N
145099 WDR 6T 6A098804008 Historical WDR 89-075 04/13/1989 None Discharger 04/13/1989 None N
144979 NPDES Permit 6T 6A090089000 Historical NPDESWW 92-082 09/10/1992 None Discharger 09/10/1992 None N
144963 WDR 6T 6A098804008 Historical WDR 91-907 08/08/1991 03/12/2002 Discharger 08/08/1991 None Y
144884 NPDES Permit 6T 6A090089000 Historical NPDESWW 87-077 07/10/1987 None Discharger 07/10/1987 None N
144843 WDR 6T 6A098704100 Historical WDR 87-044 04/09/1987 None Discharger 04/09/1987 None N
144772 NPDES Permit 6T 6A090089000 Historical NPDESWW 75-048 03/27/1975 None Discharger 03/27/1975 None N
133591 NPDES Permit 6T 6A090089000 Historical NPDNONMUNIPRCS R6-2004-0024 06/09/2004 07/17/2014 Discharger 06/09/2004 None Y
132075 WDR 6T 6A098804008 Historical WDR 02-014 03/13/2002 03/13/2002 Discharger 03/13/2002 None N
Total Regulatory Measures: 25
  
  
  
  
Expand/Contract Violations
Violations within the past five years
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.
1147103 06/05/2025 Unauthorized Discharge Per TKPOA Water Quality, Weed Harvesting raft broke a hydaulic line on 6/5 resulting in a release of less than one gallon. Discharger did not notify Water Board until 6/9/25 in violation of BO, which states that TKPOA is to notify Water Board orally within 24 hours of when they become aware of the release. Violation N Complaint Tahoe Keys POA 397482 R6T-2014-0059 Y
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
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
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
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
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.
Total Violations: 90
*Click the "(+/-) Violation Description" link to expand and contract the violation description.
  
  
  
  
Expand/Contract Enforcement Actions
Enforcement Actions
Enforcement ID Enforcement Type Enf. Order No. Title Program Effective Date Status
462445 Oral Communication None Oral Com 06/09/2025 for Tahoe Keys POA REC 06/09/2025 Historical
453069 Oral Communication None Oral Com 07/06/2022 for Tahoe Keys POA NPDNONMUNIPRCS 07/06/2022 Historical
452993 Notice to Comply None NTC 06/16/2022 for Tahoe Keys POA NPDNONMUNIPRCS 06/16/2022 Historical
452992 Oral Communication None Oral Com 06/02/2022 for Tahoe Keys POA NPDNONMUNIPRCS 06/02/2022 Historical
452990 Staff Enforcement Letter None SEL 04/04/2022 for Tahoe Keys POA NPDNONMUNIPRCS 04/04/2022 Historical
450953 Staff Enforcement Letter None SEL 08/05/2022 for Tahoe Keys POA REC 08/05/2022 Historical
406806 13267 Letter R6T-2016-0028 13267 R6T-2016-0028 for Merkelbach, Jean INDSTW 05/25/2016 Historical
405033 Oral Communication None Oral Com 05/13/2015 for Tahoe Keys POA CERFILLEXC 05/13/2015 Historical
336545 Notice of Violation R6T-2004-0024 NOV-Tahoe Keys Water Facility NPDESWW 05/25/2007 Historical
252714 Oral Communication UNKNOWN Enforcement - 6A090305004 INDSTW 07/28/2004 Historical
244825 13267 Letter UNKNOWN Enforcement - 6A090089000 NPDNONMUNIPRCS 05/06/2003 Active
243283 Oral Communication R6T-2004-0024 Enforcement - 6A090089000 NPDNONMUNIPRCS 05/15/2000 Historical
237922 Oral Communication R6T-2004-0024 Enforcement - 6A090089000 NPDESWW 11/08/2001 Historical
232006 Admin Civil Liability R6T-1999-0043 Enforcement - 6A090089000 NPDNONMUNIPRCS 09/15/1999 Historical
225165 Clean-up and Abatement Order R6T-1999-0008 Enforcement - 6A090089000 NPDNONMUNIPRCS 04/27/1999 Active
223227 Admin Civil Liability 91-939 Enforcement - 6A098804008 WDR 12/02/1991 Historical
Total Enforcement Actions: 16
  
  
  
  
Expand/Contract Enforcement Actions
Regulatory Measures linked to Related Parties
Reg. Measure ID Organization Regulatory Measure Type Program Effective Date Status
Total Regulatory Measures linked to Related Parties: 0
  
  
The current report was generated with data as of: 01/02/2026
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.
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