General Information Party ID Party Name Party Classification Mailing Address Work Phone Email/Website 13909 Diamond Bar City City Agency 21810 Copley Drive Diamond Bar, CA 91765-4178 909-839-7044(+) null Related Places Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date 808438 Los Angeles County MS4s Los Angeles 4 MS4 None null null 631955 Diamond Bar City CS Los Angeles 4 Collection_System Owner 04/06/2006 null 243618 Diamond Bar City - Mun Separate Storm Sewer, MS4 Los Angeles 4 MS4 Owner 12/13/2001 null Related Parties Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification 647253 Samantha Hubley Person Data Submitter 09/23/2024 null null 646750 Tiara Caruthers Person Data Submitter 08/15/2024 null null 644438 Eric Liu Person Data Submitter 04/30/2024 null null 643241 Andrew Ngumba Person Legally Responsible Official 03/12/2024 null null 639886 Brigette Padilla Person Data Submitter 06/06/2023 10/02/2024 null 550148 Daniel Lafferty Person Legally Responsible Official 02/20/2015 11/16/2015 null 537094 Alexander Villarama Person Legally Responsible Official 07/23/2013 null null 535586 Rajesh Patel Person Legally Responsible Official 07/26/2012 07/31/2014 null 524466 Erica Gonzales Person Data Submitter 09/02/2010 07/12/2012 null 460817 Gohar Tsolakyan Person Data Submitter 03/11/2008 09/24/2012 null 377387 Robert Swartz Person Legally Responsible Official 08/03/2007 10/31/2012 null 363584 Joyce Lee Person Data Submitter 02/06/2007 null null 362371 Cynthia Marquez Diamond Bar Person Data Submitter 01/29/2007 09/02/2010 null 362164 Nicholas Agbobu Person Legally Responsible Official 01/26/2007 09/22/2022 null 362130 Norman Cortez Diamond Bar Person Data Submitter 01/26/2007 09/02/2010 null 361559 May Hong Person Data Submitter 01/25/2007 null null 361237 Keith Lehto Person Legally Responsible Official 01/24/2007 07/17/2012 null 334830 Jeffrey Bouse Person Legally Responsible Official 01/25/2007 10/18/2012 null 334830 Jeffrey Bouse Person Legally Responsible Official 07/16/2012 null null 100794 David Liu Person Legally Responsible Official 03/20/2002 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 301157 Enrollee 4 4SSO10382 Enrollee of SB SSO WDR for City of Diamond Bar Active SSOMUNILRG 2022-0103-DWQ 11/21/2006 null Discharger 04/17/2006 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. 1135472 10/28/2024 Sanitary Sewer Overflow/Spill/ Type: Category 1 Spill; Pipe Structural Problem/Failure - Controls caused 1900 gallons of sewage to spill from Force Main at 2392 - Indian Creek Pump Station to Drainage Conveyance System that discharges to surface water,Other (specify below),Unpaved Surface Violation null SSO Diamond Bar City CS 301157 2022-0103-DWQ N 1133402 01/23/2024 Sanitary Sewer Overflow/Spill/ Type: Category 1 Spill; Root Intrusion caused 300 gallons of sewage to spill from Manhole at 2390-0127 (22809 Hilton Head Drive, Diamond Bar) to Drainage Conveyance System, Street/Curb and Gutter (2 3) Violation null SSO Diamond Bar City CS 301157 2022-0103-DWQ N 1133401 01/21/2024 Sanitary Sewer Overflow/Spill/ Type: Category 1 Spill; Root Intrusion caused 7000 gallons of sewage to spill from Manhole at 2390-0149 (707 Grand Avenue, Diamond Bar) to Drainage Conveyance System that discharges to surface water, Street/Curb and Gutter (2 3) Violation null SSO Diamond Bar City CS 301157 2022-0103-DWQ N Enforcement Actions Enforcement ID Enforcement Type Enf. Order No. Title Program Effective Date Status 451303 Notice of Violation null NOV 12/07/2021 for Diamond Bar City SSOMUNILRG 12/07/2021 Historical Regulatory Measures linked to Related Parties Reg. Measure ID Organization Regulatory Measure Type Program Effective Date Status