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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
52676 Mid Peninsula Regional Open Space District Special District 330 Distel Circle Los Altos, CA 94022 650-691-1200 None
  
  
  
  
Expand/Contract Related Places
Related Places
Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date
810603 Mid Peninsula Open Space District Routine Maintenance San Mateo 2 Dredge/Fill Site None None None
851443 Bear Creek Upper Lake Public Access Project Santa Clara 2 Habitat Restoration Area Owner 10/02/2018 None
274933 el corte de madera creek San Mateo 2 Dredge/Fill Site Owner 06/04/2004 None
770747 Pond DR06 Repair and Habitat Restoration San Mateo 2 Dredge/Fill Site Owner 09/07/2011 None
777126 Pond 07 and 08 San Mateo 2 Facility Owner 06/25/2013 None
903083 Geotechnical Borings for the Stevens Creek Shoreline Nature Study Area Project Santa Clara 2 Dredge/Fill Site Owner 10/03/2025 None
864561 Mindego Ranch Ponds Enhancement Project San Mateo 2 Dredge/Fill Site Owner 01/30/2020 None
851456 Mud Lake Improvement Project Santa Clara 2 Dredge/Fill Site Owner 10/03/2018 None
876741 Midpen Open Space Maintenance and Restoration Program San Mateo 2 Dredge/Fill Site Owner 10/06/2021 None
777124 El Corte de Madera Open Space Preserve San Mateo 2 Facility Owner 06/19/2013 None
866595 Ravenswood Bay Trail Connection Supplemental Permitting San Mateo 2 Dredge/Fill Site Owner 05/06/2020 None
874804 Alpine Road Trail Improvements Project San Mateo 2 Dredge/Fill Site Owner 06/21/2021 None
839238 Webb Creek Bridge Replacement Project Santa Clara 2 Dredge/Fill Site Owner 08/25/2017 None
899967 Purisima Pond San Mateo 2 Dredge/Fill Site Owner 02/27/2025 None
899866 Paulin Crossing And Landslide Repair Project San Mateo 2 Dredge/Fill Site Owner 02/21/2025 None
813991 Harkins Bridge Replacement Project San Mateo 2 Dredge/Fill Site Owner 03/19/2015 None
830357 Hendrys Creek Restoration Project Santa Clara 2 Dredge/Fill Site Owner 12/06/2016 None
885131 MROSD Bear Creek Redwoods Phase II Trails Project Santa Clara 2 Dredge/Fill Site Owner 01/03/2023 None
714648 Mid-Peninsula Regional Open Space Dist - Aquatic Pesticides Santa Clara 2 Habitat Restoration Area None None None
846516 Ravenswood Bay Trail Connection at Ravenswood Open Space Preserve San Mateo 2 Dredge/Fill Site Owner 04/17/2018 None
Total Related Places: 20
  
  
  
  
Expand/Contract Related Parties
Related Parties
Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification
652686 Alex Harker Person Legally Responsible Official 10/03/2025 None None
649419 David Liefert Person Legally Responsible Official 02/27/2025 None None
649342 Leigh Guggemos Person Legally Responsible Official 02/21/2025 None None
630491 Coty Sifuentes-Winter Person Employee 02/22/2022 None None
625610 Scott Reeves Person Legally Responsible Official 06/21/2021 None None
584961 Zachary Alexander Person Legally Responsible Official 10/02/2018 None None
576038 Jason Lin Person Legally Responsible Official 04/17/2018 None None
568153 Matt Brunnings Person Legally Responsible Official 08/25/2017 None None
560808 Meredith Manning Person Legally Responsible Official 12/06/2016 None None
550473 Aaron Hebert Person Legally Responsible Official 03/19/2015 None None
528856 Julie Andersen Person Legally Responsible Official 09/07/2011 None None
6886 California State Coastal Conservancy Organization In an Agreement With 01/03/2008 None State Agency
Total Related Parties: 12
  
  
  
  
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?
460093 Enrollee - 401 Certification 2 2 CW460093 Historical CERFILLEXC 2019-0044-EXEC 03/04/2025 05/16/2025 Discharger 02/27/2025 None N
339225 Enrollee 2 2 43AP00020 Historical NPDNONMUNIPRCS 2004-0009-DWQ 10/22/2004 11/27/2013 Discharger 01/03/2008 None N
167193 401 Certification 2 WS-41-003 Historical CERFILLEXC None None None Discharger 06/17/2005 None N
167194 401 Certification 2 WS-41-004 Historical CERFILLEXC None None None Discharger 06/17/2005 None N
391600 401 Certification 2 None Historical CERREST None 05/22/2012 05/22/2017 Discharger 06/25/2013 None N
391354 401 Certification 2 None Historical CERFILLEXC None 04/06/2012 04/06/2017 Discharger 06/19/2013 None N
381241 401 Certification 2 None Historical CERFILLEXC None 03/03/2010 03/03/2015 Discharger 09/07/2011 None N
410538 401 Certification 2 2 CW410538 Historical CERFILLEXC None 02/07/2018 08/22/2024 Discharger 12/06/2016 None N
415957 Enrollee - 401 Certification 2 2 CW415957 Historical CERFILLEXC 2004-0004-DWQ 07/09/2018 01/14/2025 Discharger 08/25/2017 None N
420909 401 Certification 2 2 CW420909 Historical CERFILLEXC None 07/29/2019 12/19/2024 Discharger 04/17/2018 None N
425494 401 Certification 2 2 CW425494 Active CERFILLEXC None 09/09/2019 None Discharger 10/02/2018 None N
425507 401 Certification 2 2 CW425507 Active CERFILLEXC None 09/09/2019 None Discharger 10/03/2018 None N
400299 401 Certification 2 2 CW400299 Active CERFILLEXC None 06/26/2017 None Discharger 03/19/2015 None N
374491 WDR 2 2 CW374491 Active CERFILLEXC R2-2010-0083 06/09/2010 None Discharger 06/09/2014 None N
450637 401 Certification 2 2 CW450637 Active CERFILLEXC None 01/19/2023 None Discharger 01/03/2023 None N
436587 401 Certification 2 2 CW436587 Active CERFILLEXC None 07/24/2020 None Discharger 01/30/2020 None N
443843 401 Certification 2 2 CW443843 Active CERFILLEXC None 08/27/2021 None Discharger 06/21/2021 None N
446680 Enrollee - WDR SB None Active VEGMANIP WQ-2021-0026-DWQ 07/06/2021 None Discharger 02/22/2022 None N
445220 401 Certification 2 2 CW445220 Active CERREST R2-2023-0011 02/09/2022 None Discharger 10/06/2021 None N
Total Regulatory Measures: 19
  
  
  
  
Expand/Contract Violations
Violations within the past year
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.
Report defaults to display violations within the last year. Click here to see last five years of violations. Refer to the Interactive Violation Report for more data.
Total Violations: 0
*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
305272 California State Coastal Conservancy WDR CERFILLEXC 07/20/2005 Historical
137648 California State Coastal Conservancy WDR WDR 04/28/1988 Historical
136706 California State Coastal Conservancy WDR WDR 03/25/1982 Historical
454250 California State Coastal Conservancy Enrollee - WDR VEGMANIP 07/25/2023 Active
446680 Coty Sifuentes-Winter Enrollee - WDR VEGMANIP 07/06/2021 Active
403122 California State Coastal Conservancy Enrollee - 401 Certification CERFILLEXC 10/08/2015 Historical
397844 California State Coastal Conservancy Enrollee - 401 Certification CERREST 10/02/2014 Historical
394176 California State Coastal Conservancy Enrollee - 401 Certification CERREST 11/30/2012 Historical
402335 California State Coastal Conservancy Enrollee - 401 Certification CERREST 08/20/2015 Historical
438150 California State Coastal Conservancy Enrollee - 401 Certification CERREST 10/02/2020 Active
416337 California State Coastal Conservancy 401 Certification CERFILLEXC 07/06/2020 Active
391681 California State Coastal Conservancy 401 Certification CERREST 04/17/2012 Historical
411180 California State Coastal Conservancy 401 Certification CERFILLEXC 04/04/2018 Active
404342 California State Coastal Conservancy 401 Certification CERFILLEXC 11/14/2018 Historical
Total Regulatory Measures linked to Related Parties: 14
  
  
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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