General Information Party ID Party Name Party Classification Mailing Address Work Phone Email/Website 11362 Coastside County Water District County Agency 766 Main Street Half Moon Bay, CA 94019 650-726-4405 jguistino@coastsidewater.org Related Places Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date 891627 Highway 92 Emergency Pipeline Replacement Project San Mateo 2 Dredge/Fill Site Owner 12/22/2023 null 889736 Pilarcitos Culvert Replacement San Mateo 2 Dredge/Fill Site Owner 08/02/2023 null 833231 Pilarcitos Canyon Emergency Streambank Erosion Repair Project #2 San Mateo 2 Dredge/Fill Site Owner 02/28/2017 null 833226 Pilarcitos Canyon Emergency Streambank Erosion Repair Project #l San Mateo 2 Dredge/Fill Site Owner 02/28/2017 null 822778 Coastside County WS San Mateo 2 Utility Structure Owner and Operator 03/09/2016 null 221247 Denniston Water Treatment Plant San Mateo 2 Water Treatment Plant Owner 06/18/2003 null Related Parties Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification 643144 Mary Rogren Person Legally Responsible Official 12/22/2023 null null 640907 James Derbin Person Legally Responsible Official 08/02/2023 null null 562689 David Dickson Person Legally Responsible Official 02/28/2017 null null 555059 Joe Guistino Person Legally Responsible Official 03/09/2016 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 412024 Enrollee - 401 Certification 2 2 CW412024 Enrollee - 401 Certification for Coastside County Water District Active CERFILLEXC RGP 5 05/08/2017 null Discharger 02/28/2017 null 412022 Enrollee - 401 Certification 2 2 CW412022 Enrollee - 401 Certification for Coastside County Water District Active CERFILLEXC RGP 5 05/08/2017 null Discharger 02/28/2017 null 404998 Enrollee - NPDES 2 4DW0475 Enrollee - NPDES under Order 2014-0194-DWQ Drinking Water System Discharges for Coastside County Water District Active NPDNONMUNIPRCS 2014-0194-DWQ 02/25/2016 null Discharger 03/09/2016 null 373693 Enrollee 2 2 417185002 Enrollee- NPDES CAG382001 Order 2009-0033 Coastside Denniston WTP 2417185002 Historical NPDNONMUNIPRCS R2-2009-0033 06/18/2003 02/26/2016 Discharger 09/01/2005 null 182659 Enrollee 2 2 417185001 Enrollee- NPDES CAG382001, Order 03-062 - Coastside CWD, Denniston WTP Historical NPDNONMUNIPRCS R2-2003-0062 06/18/2003 03/29/2010 Discharger 09/01/2005 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 387934 Oral Communication null Oral Com 10/31/2012 for Coastside County Water District NPDNONMUNIPRCS 10/31/2012 Historical 368701 Admin Civil Liability null MMP for Coastside CWD, Denniston WTP NPDESWW 07/03/2009 Historical 326147 Notice of Violation null Enforcement - NOV NPDNONMUNIPRCS 05/31/2007 Historical Regulatory Measures linked to Related Parties Reg. Measure ID Organization Regulatory Measure Type Program Effective Date Status