General Information Party ID Party Name Party Classification Mailing Address Work Phone Email/Website S36063 Porter Ranch Development Other 11280 Corbin Ave Northridge, CA 91326 null null Related Places Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date S260118 Porter Ranch Development Los Angeles 4 Facility Discharger 09/01/2005 null S934413 Porter Ranch Tract 50506 Los Angeles 4 Facility Discharger 08/07/2025 null Related Parties Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification N/A Michael Villani Contact Owner Contact null null null N/A Peter Kim Contact Owner Contact null 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 S588509 Construction 4 4 19C408635 Notice Of Intent New Application Active CONSTW 2009-0009-DWQ 08/27/2025 null Discharger 08/07/2025 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. S893574 09/02/2025 SW - Failure to Obtain Permit Failure to obtain coverage under the 2022 CGP by 09/01/2025. Violation N Internal Report Porter Ranch Development S186618 2009-0009-DWQ Y Enforcement Actions Enforcement ID Enforcement Type Enf. Order No. Title Program Effective Date Status S458423 Notice of Violation null 4 19C300579 CONSTW 09/05/2025 Active S425540 Notice of Violation null 4 19C300579 CONSTW 02/03/2017 Historical S454042 Notice of Violation null 4 19C300579 CONSTW 08/08/2024 Active S450405 Notice of Violation null 4 19C300579 CONSTW 08/03/2023 Historical S449543 Notice of Violation null 4 19C300579 CONSTW 05/19/2023 Historical S426185 Notice of Violation null 4 19C300579 CONSTW 05/12/2017 Historical Regulatory Measures linked to Related Parties Reg. Measure ID Organization Regulatory Measure Type Program Effective Date Status