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   Party At-A-Glance Report

  
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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 None None
  
  
  
  
Expand/Contract Related Places
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 None
210974 Babylon Apartments Los Angeles 4 Residence, NEC Owner 06/30/1997 None
Total Related Places: 3
  
  
  
  
Expand/Contract Related Parties
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 None None
Total Related Parties: 1
  
  
  
  
Expand/Contract Regulatory Measures
Regulatory Measures (non-enforcement)
Reg. Measure ID Regulatory Measure Type Region WDID Status Program Order No. RM Effective Date RM Termination Date Relationship Relationship Start Date Relationship End Date Amended?
193311 Enrollee - NPDES 4 4B196000235 Active NPDNONMUNIPRCS R4-2023-0429 03/14/1996 None Discharger 09/01/2005 None N
193581 Enrollee - NPDES 4 4B196100006 Active NPDNONMUNIPRCS R4-2018-0125 06/30/1997 None Discharger 09/01/2005 None N
193580 Enrollee - NPDES 4 4B198903071 Active NPDNONMUNIPRCS R4-2018-0125 06/30/1997 None Discharger 09/01/2005 12/27/2007 N
Total Regulatory Measures: 3
  
  
  
  
Expand/Contract Violations
Violations within the past five years
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.
1148016 05/20/2024 OEV pH Instantaneous Maximum limit is 8.5 SU and reported value was 8.75 SU at M-001 Violation N Report Burnside Apartments 193311 R4-2023-0429 N
1148014 04/14/2025 CAT2 Copper, Total Monthly Average limit is 7 ug/L and reported value was 27.2 ug/L a Violation N Report Burnside Apartments 193311 R4-2023-0429 N
1148013 04/14/2025 CAT2 Copper, Total Daily Maximum limit is 14 ug/L and reported value was 27.2 ug/L at Violation N Report Burnside Apartments 193311 R4-2023-0429 N
1148002 09/04/2025 Late Report 2Q25 Late Report Violation: Report submitted 21 days late Violation N Report Burnside Apartments 193311 R4-2023-0429 N
1148001 09/04/2025 Late Report 1Q25 Late Report Violation: Report submitted 112 days late Violation N Report Burnside Apartments 193311 R4-2023-0429 N
1148000 01/06/2025 OEV pH Instantaneous Maximum limit is 8.5 SU and reported value was 8.62 SU at M-001 Violation N Report Burnside Apartments 193311 R4-2023-0429 N
1120954 02/28/2023 CAT2 Copper, Total Monthly Average limit is 7 ug/L and reported value was 15 ug/L at Violation N Report Burnside Apartments 193311 R4-2023-0429 Y
1120953 02/28/2023 CAT1 Settleable Solids Monthly Average limit is 0.1 ml/L and reported value was 1.0 m Violation N Report Burnside Apartments 193311 R4-2023-0429 Y
1120952 02/20/2023 CAT2 Copper, Total Daily Maximum limit is 14 ug/L and reported value was 15 ug/L at M Violation N Report Burnside Apartments 193311 R4-2023-0429 Y
1120951 02/20/2023 CAT1 Settleable Solids Daily Maximum limit is 0.3 ml/L and reported value was 1.0 ml/ Violation N Report Burnside Apartments 193311 R4-2023-0429 Y
1120950 06/30/2022 CAT1 Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Monthly Average limit is 20 Violation N Report Burnside Apartments 193311 R4-2023-0429 Y
1120949 06/17/2022 CAT1 Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Daily Maximum limit is 30 mg Violation N Report Burnside Apartments 193311 R4-2023-0429 Y
1120948 05/31/2022 CAT2 Copper, Total Monthly Average limit is 29 ug/L and reported value was 50 ug/L at Violation N Report Burnside Apartments 193311 R4-2023-0429 Y
1118366 04/30/2023 Deficient Monitoring No sample for oil and grease, Phenols, or Settleable solids during month of Apri Violation N Report Babylon Apartments 193581 R4-2018-0125 N
1117771 04/01/2023 Deficient Reporting No sample taken in 1Q23, as required by permit R4 2018 0125. Violation N Report Babylon Apartments 193581 R4-2018-0125 N
Report currently showing last five years of violations. Click here to return to viewing one year of violations. Refer to the Interactive Violation Report for more data.
Total Violations: 15
*Click the "(+/-) Violation Description" link to expand and contract the violation description.
  
  
  
  
Expand/Contract Enforcement Actions
Enforcement Actions
Enforcement ID Enforcement Type Enf. Order No. Title Program Effective Date Status
455037 Admin Civil Liability R4-2023-0351 ACL R4-2023-0351 for HPG Management NPDNONMUNIPRCS 06/20/2024 Historical
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
Total Enforcement Actions: 9
  
  
  
  
Expand/Contract Enforcement Actions
Regulatory Measures linked to Related Parties
Reg. Measure ID Organization Regulatory Measure Type Program Effective Date Status
Total Regulatory Measures linked to Related Parties: 0
  
  
The current report was generated with data as of: 11/24/2025
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.
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