General Information Party ID Party Name Party Classification Mailing Address Work Phone Email/Website 36943 USDI Bureau of Reclamation Yuma Federal Agency 7301 Calle Agua Salada Yuma, AZ 85364 928-343-8215(+) null Related Places Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date 864219 Maintenance Dredging above Imperial Dam Imperial 7 Dredge/Fill Site Owner 01/15/2020 null 840540 Moabi Backwater Maintenance Inlet Culvert Replacement Project San Bernardino 7 Dredge/Fill Site Owner 10/03/2017 null 838857 Walter's Camp Wash Fan Removal Imperial 7 Dredge/Fill Site Owner 08/15/2017 null 808510 Senator Wash Pumping Plant Inlet Channel Imperial 7 Dredge/Fill Site Owner 08/18/2014 null 793060 US Bureau of Reclamation Level Monitoring Wells Backwater Evaluations Riverside 7 Dredge/Fill Site Owner 03/29/2013 null 771291 Palo Verde Division Bankline Maintenance Project Riverside 7 Dredge/Fill Site Operator 09/16/2011 null 770444 Laguna Settling Basin's Rock Weir - Laguna Reservoir Restoration Riverside 7 Dredge/Fill Site Owner 08/29/2011 null 769774 U.S. Bureau of Reclamation - Level Monitoring Wells Riverside 7 Dredge/Fill Site Owner 08/15/2011 null 767977 Blythe Marina Training Structure Rehabilitation Riverside 7 Dredge/Fill Site Operator 06/27/2011 null 767143 Palo Verde Div Backwater Improvement & Maintenance Project Riverside 7 Dredge/Fill Site Operator 06/03/2011 null 756423 Moabi Backwater - Inlet Channel San Bernardino 7 Dredge/Fill Site Operator 08/19/2010 null 754877 Senator Wash Dam - Relief Drain Imperial 7 Dredge/Fill Site Operator 09/15/2006 null 754826 Colorado River Gauging Stations Riverside 7 Dredge/Fill Site None null null 754806 Level Monitoring Wells - Backwater Evaluations Imperial 7 Dredge/Fill Site Operator 11/20/2008 null 754164 Palo Verde C Canal Culvert Replacement Imperial 7 Dredge/Fill Site Operator 06/29/2010 null 736432 Laguna Settling Basin - Maint. Dredgin Imperial 7 Dredge/Fill Site Operator 04/17/2009 null 735851 Maintenance Dredging above Imperial Dam Imperial 7 Dredge/Fill Site Operator 04/02/2009 null 647512 Wash Fan Activities San Bernardino 7 Dredge/Fill Site Operator 03/01/2007 null 641152 Walter's Camp Wash Area Imperial 7 Dredge/Fill Site Contact 09/20/2006 null 252935 Riviera Estates Oper & Maint Riverside 7 Dredge/Fill Site Owner 04/14/2003 null 252934 Riviera Estates II Oper/Maint Riverside 7 Dredge/Fill Site Owner 10/29/2003 null 236141 Laguna Settling Basin Imperial 7 Dredge/Fill Site Owner 07/08/2003 null 236140 Laguna Settling Basin Riverside 7 Dredge/Fill Site Owner 05/22/2000 null 232289 Imperial Restoration/Enhance. Imperial 7 Dredge/Fill Site Owner 06/04/2001 null 232276 Imperial Dam Maint. Dredging Imperial 7 Dredge/Fill Site Owner 08/03/2004 null 215185 Colorado River Levee/Front WK null 7 Dredge/Fill Site Owner 06/28/2000 null 215182 Colorado Riv Front Work &Levee Imperial 7 Dredge/Fill Site Owner 05/07/2001 null Related Parties Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification 528729 Christopher Walhs Person Legally Responsible Official 08/29/2011 null null 528459 Christopher Wallis Person Legally Responsible Official 08/15/2011 null null 127873 Robert Adams Person Facility Contact 07/26/2004 null null Regulatory Measures(non-enforcement) Reg. Measure ID Regulatory Measure Type Region WDID Title Status Program Order No. RM Effective Date RM Termination Date Relationship Relationship Start Date Relationship End Date 416585 401 Certification 7 7B363038001 401 Cert for USDI Bureau of Reclamation Yuma Historical CERFILLEXC null 10/30/2017 01/25/2018 Discharger 10/03/2017 null 415782 401 Certification 7 7B133041001 401 Cert for USDI Bureau of Reclamation Yuma Historical CERDREDGE null 10/10/2017 11/13/2018 Discharger 08/15/2017 null 397724 401 Certification 7 7B133039001 401 Cert for USDI Bureau of Reclamation Yuma Historical CERFILLEXC null 10/21/2014 11/30/2016 Discharger 08/18/2014 null 389746 401 Certification 7 null DRAFT WQC for USDI Bureau of Reclamation Yuma Historical CERFILLEXC null 02/19/2009 null Discharger 03/29/2013 null 381474 401 Certification 7 7B333014001 401 Certification 7B333014001 for US Bureau of Reclamation Historical CERFILLEXC null 12/13/2011 12/11/2016 Discharger 09/16/2011 null 381039 401 Certification 7 7A333120001 401 Certification 7A333120001 for USDI Bureau of Reclamation Yuma Historical CERFILLEXC null 09/29/2011 null Discharger 08/29/2011 null 380835 401 Certification 7 7B133018001 401 Certification 02/19/2009 for USDI Bureau of Reclamation Historical CERFILLEXC null 02/19/2009 03/31/2009 Discharger 08/15/2011 null 379992 401 Certification 7 7B333013001 401 Certification 7B333013001 for US Bureau of Reclamation Historical CERFILLEXC null 09/29/2011 null Discharger 06/27/2011 null 379528 401 Certification 7 7B333012001 401 Certification 7B333012001 for US Bureau of Reclamation Historical CERFILLEXC null 06/30/2011 06/30/2016 Discharger 06/03/2011 null 375657 401 Certification 7 7B363024001 401 Certification 7B363024001 for US Bureau of Reclamation Yuma Historical CERFILLEXC null 10/26/2010 03/01/2011 Discharger 08/19/2010 null 374974 401 Certification 7 7B333017001 401 Certification 7B333017001 for US Bureau of Reclamation Historical CERFILLEXC null 11/04/2008 null Discharger 09/02/2008 null 374971 401 Certification 7 7B133018001 401 Certification 7B133018001 for US Bureau of Reclamation Historical CERFILLEXC null 12/05/2008 null Discharger 11/20/2008 null 374730 401 Certification 7 7B133033001 401 Certification for US Bureau of Reclamation Historical CERFILLEXC null 09/02/2010 09/03/2011 Discharger 06/29/2010 null 364040 401 Certification 7 7B133021001 401 Certification 7B133021001 Laguna Settling Basin Maintenance Dredging Project Historical CERFILLEXC null 07/22/2009 07/03/2011 Discharger 04/17/2009 null 363430 401 Certification 7 7B133020001 US Bureau of Reclamation - Maintenance Dredging above Imperial Dam Project Historical CERFILLEXC null 05/28/2009 09/01/2011 Discharger 04/02/2009 null 321676 401 Certification 7 null 401 Certification 7B363012001 for US Bureau of Reclamation Yuma Historical CERFILLEXC null 09/20/2005 null Discharger 03/01/2007 null 310521 401 Certification 7 7B133013001 7B133013001 Historical CERFILLEXC null null null Discharger 09/20/2006 null 173404 401 Certification 7 7B133012001 7B133012001 Historical CERFILLEXC null null null Discharger 06/17/2005 null 170825 401 Certification 7 7B333004002 7B333004002 Historical CERFILLEXC null null null Discharger 06/17/2005 null 170685 401 Certification 7 7A133016001 7A133016001 Historical CERFILLEXC null null null Discharger 06/17/2005 null 168835 401 Certification 7 7B133007002 7B133007002 Historical CERFILLEXC null null null Discharger 06/17/2005 null 167195 401 Certification 7 7B133007001 7B133007001 Historical CERFILLEXC null null null Discharger 06/17/2005 null 164815 401 Certification 7 7B133006001 7B133006001 Historical CERFILLEXC null null null Discharger 06/17/2005 null 162271 401 Certification 7 7B333000001 7B333000001 Historical CERFILLEXC null null null Discharger 06/17/2005 null Violations within the past calendar 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. Enforcement Actions Enforcement ID Enforcement Type Enf. Order No. Title Program Effective Date Status Regulatory Measures linked to Related Parties Reg. Measure ID Organization Regulatory Measure Type Program Effective Date Status