General Information Party ID Party Name Party Classification Mailing Address Work Phone Email/Website 20643 HPG Management Privately-Owned Business 433 North Camden Drive 1020 Beverly Hills, CA 90210 null null Related Places Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date 231194 620 Gramercy Place Los Angeles 4 Residence, NEC Owner 10/30/1990 12/27/2007 212158 Burnside Apartments Los Angeles 4 Residence, NEC Owner 01/08/1996 null 210974 Babylon Apartments Los Angeles 4 Residence, NEC Owner 06/30/1997 null Related Parties Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification 119022 Marco Astani Person Legally Responsible Official 10/30/1990 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 193581 Enrollee - NPDES 4 4B196100006 Enrollee - NPDES Gen Permit for GW Const & Proj Dewat for HPG Management Active NPDNONMUNIPRCS R4-2018-0125 06/30/1997 null Discharger 09/01/2005 null 193580 Enrollee - NPDES 4 4B198903071 Enrollee - NPDES Gen Permit for GW from Const & Project Dewat for 620 Gramercy Place HOA Active NPDNONMUNIPRCS R4-2018-0125 06/30/1997 null Discharger 09/01/2005 12/27/2007 193311 Enrollee - NPDES 4 4B196000235 Enrollee - NPDES Gen Permit for GW Const & Proj Dewat for HPG Management Active NPDNONMUNIPRCS R4-2018-0125 03/14/1996 null 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 455037 Expedited Payment Letter R4-2023-0351 EPL R4-2023-0351 for HPG Management NPDNONMUNIPRCS 11/15/2023 Active 425116 Admin Civil Liability R4-2018-0105 ACL R4-2018-0105 for HPG Management NPDNONMUNIPRCS 12/21/2018 Historical 419028 Admin Civil Liability R4-2018-0004 ACL R4-2018-0004 for HPG Management NPDNONMUNIPRCS 05/02/2018 Historical 355261 Notice of Violation NOV NOV sent 10/15/08 for failure to file NOI for coverage under Order R4-2008-0032. NPDNONMUNIPRCS 10/15/2008 Historical 236270 Admin Civil Liability R4-2000-0186 MMPC R4-2000-0186 HPG Management, Babylon Apts. (12/27/00) NPDNONMUNIPRCS 12/27/2000 Historical 228859 Admin Civil Liability R4-2000-0189 MMPC 00-189 for $3,000 (02/20/01) - HPG Management, Hancock Park Place Apts NPDNONMUNIPRCS 02/20/2001 Historical 228749 Notice of Violation NOV NOV HPG Management, Babylon Apartments (01/05/01) NPDNONMUNIPRCS 01/05/2001 Historical 228279 Notice of Violation NOV NOV HPG Management, Babylon Apartments (6/23/00) NPDNONMUNIPRCS 06/23/2000 Historical 228276 Staff Enforcement Letter NNC NNC - HPG Management, Hancock Park Place Apts. (06/16/00) NPDNONMUNIPRCS 06/16/2000 Historical Regulatory Measures linked to Related Parties Reg. Measure ID Organization Regulatory Measure Type Program Effective Date Status