General Information Party ID Party Name Party Classification Mailing Address Work Phone Email/Website 600663 Allison Knapp null 925-313-2366(+) allison.knapp@pw.cccounty.us(+) Related Places Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date Related Parties Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification 535684 Contra Costa County PWD Organization Legally Responsible Official 11/05/2021 null County Agency 11594 Contra Costa FC&WCD Organization Legally Responsible Official 06/15/2020 null County Agency 9305 Contra Costa County Flood Control Organization Legally Responsible Official 07/30/2019 null County Agency 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 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 459588 Contra Costa County PWD Enrollee - WDR CERFILLEXC 01/07/2025 Active 457595 Contra Costa County PWD 401 Certification CERFILLEXC 08/28/2024 Active 450471 Contra Costa County PWD 401 Certification CERFILLEXC 04/12/2023 Active 449676 Contra Costa FC&WCD Enrollee - 401 Certification CERFILLEXC 07/24/2023 Active 446291 Contra Costa County PWD 401 Certification CERFILLEXC 09/16/2022 Active 445703 Contra Costa County PWD 401 Certification CERFILLEXC 04/21/2022 Active 445630 Contra Costa County PWD 401 Certification CERFILLEXC 12/01/2022 Active 442067 Contra Costa County PWD Enrollee - 401 Certification CERFILLEXC 06/23/2021 Historical 442065 Contra Costa County PWD Enrollee - 401 Certification CERFILLEXC 06/23/2021 Active 442064 Contra Costa County PWD Enrollee - 401 Certification CERFILLEXC 06/23/2021 Active 442063 Contra Costa County PWD Enrollee - 401 Certification CERFILLEXC 06/23/2021 Active 438664 Contra Costa FC&WCD 401 Certification CERFILLEXC 09/11/2020 Historical 438534 Contra Costa County PWD 401 Certification CERFILLEXC 01/04/2021 Historical 436585 Contra Costa County PWD 401 Certification CERFILLEXC 11/02/2020 Active 434759 Contra Costa County PWD 401 Certification CERFILLEXC 12/16/2020 Active 434746 Contra Costa County PWD 401 Certification CERFILLEXC 12/03/2021 Active 433295 Contra Costa County Flood Control 401 Certification CERFILLEXC 10/08/2020 Active 428753 Contra Costa County PWD 401 Certification CERFILLEXC 05/17/2019 Historical 428727 Contra Costa County PWD 401 Certification CERFILLEXC 06/24/2019 Active 427774 Contra Costa County PWD 401 Certification CERFILLEXC 05/21/2020 Historical 425617 Contra Costa County PWD Enrollee - 401 Certification CERFILLEXC 10/18/2018 Historical 422310 Contra Costa County PWD Enrollee - 401 Certification CERFILLEXC 02/26/2019 Active 417293 Contra Costa County PWD 401 Certification CERFILLEXC 05/02/2018 Historical 417067 Contra Costa County PWD 401 Certification CERFILLEXC 03/20/2018 Historical 416713 Contra Costa County Flood Control Enrollee - 401 Certification CERFILLEXC 10/30/2017 Historical 416152 Contra Costa County Flood Control 401 Certification CERREST 03/16/2018 Historical 413676 Contra Costa County PWD 401 Certification CERFILLEXC 09/14/2017 Active 413206 Contra Costa County PWD 401 Certification CERFILLEXC 10/24/2018 Historical 411393 Contra Costa County PWD 401 Certification CERFILLEXC 01/05/2018 Historical 411372 Contra Costa FC&WCD Letter MNSTW1 01/06/2017 Historical 411371 Contra Costa FC&WCD Letter MNSTW1 01/06/2017 Historical 406854 Contra Costa County PWD 401 Certification CERFILLEXC 05/24/2018 Historical 406264 Contra Costa County PWD 401 Certification CERFILLEXC 01/30/2017 Historical 405131 Contra Costa County PWD 401 Certification CERFILLEXC 05/09/2017 Active 404322 Contra Costa County PWD 401 Certification CERFILLEXC 05/24/2016 Historical 403501 Contra Costa County PWD 401 Certification CERFILLEXC 08/29/2016 Historical 399699 Contra Costa County PWD 401 Certification CERFILLEXC 05/29/2015 Historical 399353 Contra Costa County PWD 401 Certification CERFILLEXC 04/17/2015 Historical 399291 Contra Costa County PWD 401 Certification CERFILLEXC 05/25/2016 Active 396778 Contra Costa FC&WCD Enrollee NPDNONMUNIPRCS 03/07/2014 Historical 396488 Contra Costa County PWD 401 Certification CERFILLEXC 07/24/2014 Historical 396136 Contra Costa County PWD 401 Certification CERFILLEXC 07/11/2014 Historical 395115 Contra Costa FC&WCD 401 Certification CERFILLEXC 05/23/2014 Historical 394816 Contra Costa County PWD 401 Certification CERFILLEXC 07/25/2014 Historical 392997 Contra Costa County PWD 401 Certification CERFILLEXC 06/04/2014 Historical 392838 Contra Costa County PWD 401 Certification CERFILLEXC 04/30/2014 Historical 392711 Contra Costa County PWD 401 Certification CERFILLEXC 02/07/2014 Historical 391167 Contra Costa County PWD 401 Certification CERFILLEXC 04/20/2012 Historical 391042 Contra Costa County Flood Control 401 Certification CERDREDGE 07/21/2010 Historical 390287 Contra Costa County PWD 401 Certification CERFILLEXC 05/10/2013 Historical 390102 Contra Costa County PWD 401 Certification CERFILLEXC 04/16/2013 Historical 388708 Contra Costa County PWD 401 Certification CERFILLEXC 05/22/2012 Historical 388635 Contra Costa County Flood Control 401 Certification CERFILLEXC 12/12/2012 Historical 386917 Contra Costa County PWD 401 Certification CERFILLEXC 06/08/2011 Historical 386699 Contra Costa County PWD 401 Certification CERFILLEXC 08/09/2011 Historical 386516 Contra Costa FC&WCD 401 Certification CERFILLEXC 09/21/2010 Historical 384209 Contra Costa FC&WCD 401 Certification CERFILLEXC 06/21/2010 Historical 382731 Contra Costa FC&WCD 401 Certification CERFILLEXC 12/31/2009 Historical 377775 Contra Costa County Flood Control 401 Certification CERFILLEXC 11/03/2009 Historical 346587 Contra Costa FC&WCD Enrollee NPDNONMUNIPRCS 06/19/2004 Historical 194729 Contra Costa FC&WCD Enrollee - NPDES NPDNONMUNIPRCS 03/07/2014 Active 171921 Contra Costa County Flood Control 401 Certification CERFILLEXC null Historical 170935 Contra Costa County Flood Control 401 Certification CERFILLEXC null Historical 141215 Contra Costa FC&WCD NPDES Permit MNSTW1 01/28/1994 Historical