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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
S622900 Town of Mammoth Lakes City Agency Po box 1609 mammoth lakes, CA 93546 760-934-8989 254 hhayes@ci.mammoth-lakes.ca.us
  
  
  
  
Expand/Contract Related Places
Related Places
Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date
S930433 Mammoth Yosemite Airport Mono 6B Facility Discharger 04/17/2025 None
S925112 Mammoth Lakes Civic Center Mono 6B Facility Discharger 08/05/2024 None
S923107 The Parcel ? Phase 2 (Town Parcel) Mono 6B Facility Discharger 06/27/2024 None
S897427 The Parcel Mono 6B Facility Discharger 08/20/2021 None
S892724 Sierra Business Park Mono 6B Facility Discharger 04/09/2021 None
S874845 Mammoth Yosemite Airport Mono 6B Facility Discharger 08/09/2019 None
S862618 Mammoth Creek Park Mono 6B Facility Discharger 03/22/2018 None
S862478 Lower Main Street Sidewalk Mono 6B Facility Discharger 03/15/2018 None
S837619 Town of Mammoth Lakes Maintenance Yard Mono 6B Facility Discharger 07/02/2015 None
S831493 Meridian Blvd Mono 6B Facility Discharger 09/08/2014 None
S828482 Lower Canyon Blvd Mono 6B Facility Discharger 03/21/2014 None
S822895 Mammoth College Connector Path Mono 6B Facility Discharger 04/25/2013 None
S817988 Whitmore Track and Sports Complex Mono 6B Facility Discharger 07/09/2012 None
S651866 Lake Mary Rd Bike Path Mono 6B Facility Discharger 06/14/2007 None
S239296 Mammoth Yosemite Airport Mono 6B Facility Discharger 09/01/2005 None
Total Related Places: 15
  
  
  
  
Expand/Contract Related Parties
Related Parties
Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification
N/A Peter Bernasconi Contact Owner Contact N/A N/A N/A
N/A John Milne Contact Owner Contact N/A N/A N/A
N/A Haislip Hayes Contact Owner Contact N/A N/A N/A
N/A Grady Dutton Contact Owner Contact N/A N/A N/A
Total Related Parties: 4
  
  
  
  
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?
S575956 Construction 6V 6B26C405019 Active CONSTW 2009-0009-DWQ 09/18/2024 None Discharger 08/05/2024 None None
S574754 Construction 6V 6B26C404373 Active CONSTW 2009-0009-DWQ 07/10/2024 None Discharger 06/27/2024 None None
S204376 Industrial 6V 6B26I003680 Active INDSTW 2014-0057-DWQ 03/31/1992 None Discharger 09/01/2005 None None
Total Regulatory Measures: 3
  
  
  
  
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.
S897941 09/01/2025 SW - Late Report Failure to submit the 2024-2025 Annual Report by 09/01/2025 Violation N Report The Parcel ? Phase 2 (Town Parcel) S574754 2009-0009-DWQ Y
S895705 09/02/2025 SW - Failure to Obtain Permit Failure to obtain coverage under the 2022 CGP by 09/01/2025. Violation N Internal Report Mammoth Creek Park S495918 2009-0009-DWQ Y
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: 2
*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
S462790 Notice of Violation None 6B26C404373 CONSTW 09/05/2025 Active
S460554 Notice of Violation None 6B26C393972 CONSTW 09/05/2025 Active
S428206 1st Annual Report Notice of Non-Compliance None 6B26I003680 INDSTW 12/29/2017 Active
S422428 1st Annual Report Notice of Non-Compliance None 6B26I003680 INDSTW 01/21/2016 Historical
S422292 Notice of Non-Compliance for Non-Filers None 6B26I003680 INDSTW 12/22/2015 Active
S421200 Notice of Non-Compliance for Non-Filers None 6B26I003680 INDSTW 10/30/2015 Active
S244672 13267 Letter/Order UNKNOWN 6B26I003680 INDSTW 09/02/2000 Historical
S243468 Notice of Violation UNKNOWN 6B26I003680 INDSTW 10/19/1999 Historical
S243421 Notice of Violation UNKNOWN 6B26I003680 INDSTW 11/30/1999 Historical
Total Enforcement Actions: 9
  
  
  
  
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: 10/17/2025
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.
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