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   Party At-A-Glance Report

  
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General Information
Party ID Party Name Party Classification Mailing Address Work Phone Email/Website
625400 Emily Sinkhorn 736 F Street Arcata, CA 95521 707-825-2163 esinkhorn@cityofarcata.org
  
  
  
  
Expand/Contract Related Places
Related Places
Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date
Total Related Places: 0
  
  
  
  
Expand/Contract Related Parties
Related Parties
Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification
1988 Arcata City Organization Legally Responsible Official 06/28/2021 None City Agency
Total Related Parties: 1
  
  
  
  
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?
Total Regulatory Measures: 0
  
  
  
  
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.
1110922 11/30/2022 CAT2 Chlorine, Total Residual Maximum Daily (MDEL) limit is 0.02 mg/L and reported value was 1.8 mg/L at EFF-001. Violation None Report Arcata City WWTF 436548 R1-2019-0006 Y
1110921 11/30/2022 CAT2 Chlorine, Total Residual Monthly Average limit is 0.01 mg/L and reported value was 1.8 mg/L at EFF-001. Violation None Report Arcata City WWTF 436548 R1-2019-0006 Y
1109944 10/28/2022 CAT2 Chlorine, Free Available Maximum Daily (MDEL) limit is 0.02 mg/L and reported value was 1.8 mg/L at EFF-001. Violation None Report Arcata City WWTF 436548 R1-2019-0006 Y
1109943 10/28/2022 CAT2 Chlorine, Total Residual Monthly Average limit is 0.01 mg/L and reported value was 1.8 mg/L at EFF-001. Violation None Report Arcata City WWTF 436548 R1-2019-0006 Y
1109942 10/03/2022 CAT2 Chlorine, Total Residual Maximum Daily (MDEL) limit is 0.02 mg/L and reported value was 2.99 mg/L at EFF-001. Violation None Report Arcata City WWTF 436548 R1-2019-0006 Y
1109941 10/03/2022 CAT2 Chlorine, Total Residual Monthly Average limit is 0.01 mg/L and reported value was 2.99 mg/L at EFF-001. Violation None Report Arcata City WWTF 436548 R1-2019-0006 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: 6
*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
Total Enforcement Actions: 0
  
  
  
  
Expand/Contract Enforcement Actions
Regulatory Measures linked to Related Parties
Reg. Measure ID Organization Regulatory Measure Type Program Effective Date Status
462326 Arcata City Enrollee - 401 Certification CERFILLEXC 09/04/2025 Active
460451 Arcata City Enrollee - WDR CERFILLEXC 04/01/2025 Active
460057 Arcata City 401 Certification CERFILLEXC 08/07/2025 Active
457707 Arcata City Enrollee - 401 Certification CERFILLEXC 07/25/2024 Active
457137 Arcata City Enrollee - Waiver CERFILLEXC 06/05/2024 Active
454184 Arcata City Enrollee - 401 Certification CERREST 09/29/2023 Active
452209 Arcata City Enrollee - 401 Certification CERREST 05/23/2023 Historical
451919 Arcata City Enrollee - 401 Certification CERFILLEXC 03/23/2023 Historical
449552 Arcata City 401 Certification CERFILLEXC 06/30/2023 Active
448665 Arcata City 401 Certification CERFILLEXC 09/16/2022 Active
444115 Arcata City Enrollee - 401 Certification CERREST 07/27/2021 Active
443472 Arcata City 401 Certification CERFILLEXC 10/27/2021 Active
440250 Arcata City Co-Permitee SLIC 07/09/2020 Active
439170 Arcata City Enrollee - 401 Certification CERREST 08/03/2020 Active
438270 Arcata City Enrollee - 401 Certification CERFILLEXC 08/19/2020 Historical
436548 Arcata City NPDES Permit NPDMUNILRG 12/01/2019 Active
428732 Arcata City Enrollee - 401 Certification CERREST 02/25/2019 Historical
422168 Arcata City Enrollee - 401 Certification CERREST 10/03/2018 Historical
420810 Arcata City Enrollee - Waiver CERFILLEXC 05/04/2018 Active
418343 Arcata City 401 Certification CERREST 05/30/2018 Active
404989 Arcata City 401 Certification CERFILLEXC 10/20/2016 Active
400159 Arcata City 401 Certification CERREST 04/03/2015 Historical
399930 Arcata City 401 Certification CERFILLEXC 04/10/2015 Historical
397424 Arcata City Enrollee - 401 Certification CERREST 08/01/2014 Historical
392598 Arcata City Enrollee - WDR TH 08/15/2016 Active
392454 Arcata City 401 Certification CERREST 07/18/2013 Historical
390145 Arcata City Enrollee - 401 Certification CERDREDGE 07/18/2013 Historical
377968 Arcata City Enrollee - 401 Certification CERREST 03/07/2011 Historical
377962 Arcata City Enrollee - 401 Certification CERREST 03/07/2011 Historical
375037 Arcata City Enrollee TH 07/16/2010 Historical
368671 Arcata City Enrollee TH 09/29/2009 Historical
367977 Arcata City 401 Certification CERFILLEXC 06/24/2010 Historical
364935 Arcata City 401 Certification CERFILLEXC 07/28/2009 Historical
364656 Arcata City 401 Certification CERFILLEXC 05/27/2009 Historical
364370 Arcata City 401 Certification CERFILLEXC 06/15/2009 Historical
362684 Arcata City Enrollee TH None Historical
353945 Arcata City Enrollee - Waiver TH 09/23/2008 Active
352643 Arcata City 401 Certification CERFILLEXC 01/26/2009 Historical
349365 Arcata City 401 Certification CERFILLEXC 09/02/2003 Historical
348831 Arcata City 401 Certification CERFILLEXC 08/04/2006 Historical
348520 Arcata City 401 Certification CERFILLEXC 07/25/2007 Historical
321411 Arcata City NPDES Permit NPDMUNILRG 08/01/2012 Historical
299797 Arcata City Enrollee - WDR SSOMUNILRG 05/01/2007 Active
260627 Arcata City Letter NPDESWW 04/27/2001 Historical
179204 Arcata City Enrollee WDRNONMUNIPRCS 05/08/2003 Historical
173816 Arcata City 401 Certification CERFILLEXC 09/30/2004 Historical
173339 Arcata City Enrollee MNSTW2 12/21/2005 Historical
173295 Arcata City 401 Certification CERFILLEXC 09/10/2004 Historical
170474 Arcata City 401 Certification CERFILLEXC 11/17/2003 Historical
169708 Arcata City 401 Certification CERFILLEXC 07/10/2002 Historical
169093 Arcata City 401 Certification CERFILLEXC 11/13/2001 Historical
139240 Arcata City NPDES Permit NPDMUNILRG 02/26/1998 Historical
137967 Arcata City NPDES Permit NPDMUNILRG 02/25/1993 Historical
137599 Arcata City NPDES Permit NPDMUNILRG 10/29/1987 Historical
136970 Arcata City NPDES Permit NPDMUNILRG 09/23/1982 Historical
132459 Arcata City NPDES Permit NPDMUNILRG 06/23/2004 Historical
Total Regulatory Measures linked to Related Parties: 56
  
  
The current report was generated with data as of: 10/31/2025
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.
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