General Information Party ID Party Name Party Classification Mailing Address Work Phone Email/Website S618700 Lennar Homes of California LLC Privately-Owned Business 13520 Evening Creek Drive Suite 600 San Diego, CA 92128 949-349-8000 john.baayoun@lennar.com Related Places Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date S855261 Melrose 47 San Diego 9 Facility Discharger 05/09/2017 null S890418 Sunrise Gardens San Diego 9 Facility Discharger 02/03/2021 null S875694 The Vibe and Cleo at Millenia San Diego 9 Facility Discharger 09/10/2019 null S867553 The Collection at St Cloud San Diego 9 Facility Discharger 11/05/2015 null S896696 Sunbow II Phase 3 San Diego 9 Facility Discharger 07/28/2021 null S926687 1050 East Main Street San Diego 9 Facility Discharger 11/14/2024 null S889568 Otay Ranch Village 8 West Parcel M San Diego 9 Facility Discharger 01/12/2021 null S889572 Otay Ranch Village 8 West Parcel Q San Diego 9 Facility Discharger 01/12/2021 null S888030 Avion at Del Sur San Diego 9 Facility Discharger 11/19/2020 null S871473 Mission Beach Residences and Santa Barbara Place Residences San Diego 9 Facility Discharger 03/22/2019 null S890016 Avion San Diego 9 Facility Discharger 01/21/2021 null S896502 Skylark San Diego 9 Facility Discharger 07/22/2021 null S897500 The Farm San Diego 9 Facility Discharger 08/23/2021 null S904345 Epoca Neighborhoods G & I San Diego 9 Facility Discharger 05/06/2022 null S910832 The Trails at Carmel Mountain Ranch San Diego 9 Facility Discharger 02/15/2023 null S910491 North River Farm San Diego 9 Facility Discharger 02/03/2023 null S936229 The Farm San Diego 9 Facility Discharger 09/02/2025 null S876150 The Villages San Diego 9 Facility Discharger 09/25/2019 null S889570 Otay Ranch Village 8 West Parcel O San Diego 9 Facility Discharger 01/12/2021 null S865990 Pacific Village San Diego 9 Facility Discharger 07/31/2018 null S897750 The Junipers San Diego 9 Facility Discharger 08/31/2021 null S877824 Aventine at Sweetwater Springs San Diego 9 Facility Discharger 12/12/2019 null S874227 Eco Blok Homes San Diego 9 Facility Discharger 07/15/2019 null S866465 The Collection at St Cloud San Diego 9 Facility Discharger 07/18/2012 null S898736 Merge 56 Unit 2 San Diego 9 Facility Discharger 09/30/2021 null S860581 Park Villas El Corazon San Diego 9 Facility Discharger 12/01/2017 null Related Parties Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification N/A William Ostrem Contact Owner Contact null null null N/A Ryan Green Contact Owner Contact null null null N/A Ryan Green 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 S579202 Construction 9 9 37C405753 Notice Of Intent New Application Active CONSTW 2009-0009-DWQ 12/12/2024 null Discharger 11/14/2024 null S590560 Construction 9 9 37C409243 Notice Of Intent New Application Active CONSTW 2009-0009-DWQ 09/08/2025 null Discharger 09/02/2025 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. S897120 09/02/2025 SW - Failure to Obtain Permit Failure to obtain coverage under the 2022 CGP by 09/01/2025. Violation N Internal Report The Trails at Carmel Mountain Ranch S558625 2009-0009-DWQ Y S896897 09/02/2025 SW - Failure to Obtain Permit Failure to obtain coverage under the 2022 CGP by 09/01/2025. Violation N Internal Report The Farm S540645 2009-0009-DWQ Y Enforcement Actions Enforcement ID Enforcement Type Enf. Order No. Title Program Effective Date Status S433072 Staff Enforcement Letter null 9 37C382083 CONSTW 04/19/2019 Active S434231 Staff Enforcement Letter null 9 37C388385 CONSTW 10/07/2019 Active S461746 Notice of Violation null 9 37C395463 CONSTW 09/05/2025 Active S461969 Notice of Violation null 9 37C399903 CONSTW 09/05/2025 Active Regulatory Measures linked to Related Parties Reg. Measure ID Organization Regulatory Measure Type Program Effective Date Status