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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
639172 Gregory Ronczka 24001 Stevens Creek Blvd Cupertino, CA 95014 972-657-4301 gregory.ronczka@heidelbergmaterials.com
  
  
  
  
Expand/Contract Related Places
Related Places
Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date
Total Related Places: 0
  
  
  
  
Expand/Contract Related Parties
Related Parties
Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification
23863 Lehigh Southwest Cement Company, Permanente Facility Organization Legally Responsible Official 04/28/2023 None Privately-Owned Business
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?
Total Regulatory Measures: 0
  
  
  
  
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.
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: 0
*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
Total Enforcement Actions: 0
  
  
  
  
Expand/Contract Enforcement Actions
Regulatory Measures linked to Related Parties
Reg. Measure ID Organization Regulatory Measure Type Program Effective Date Status
143297 Lehigh Southwest Cement Company, Permanente Facility Reclamation Requirements REC 03/16/1994 Active
414776 Lehigh Southwest Cement Company, Permanente Facility NPDES Permit NPDINDLRG 10/01/2017 Active
384455 Lehigh Southwest Cement Company, Permanente Facility WDR LNDISPOTH 06/13/2018 Active
432980 Lehigh Southwest Cement Company, Permanente Facility NPDES Permit NPDINDLRG 09/01/2019 Active
380545 Lehigh Southwest Cement Company, Permanente Facility Enrollee NPDNONMUNIPRCS 11/21/2011 Historical
380546 Lehigh Southwest Cement Company, Permanente Facility Enrollee NPDNONMUNIPRCS 11/22/2011 Historical
380548 Lehigh Southwest Cement Company, Permanente Facility Enrollee NPDNONMUNIPRCS 11/21/2011 Historical
380549 Lehigh Southwest Cement Company, Permanente Facility Enrollee NPDNONMUNIPRCS 10/28/2011 Historical
380550 Lehigh Southwest Cement Company, Permanente Facility Enrollee NPDNONMUNIPRCS 11/21/2011 Historical
143130 Lehigh Southwest Cement Company, Permanente Facility WDR WDR 05/21/1997 Historical
380558 Lehigh Southwest Cement Company, Permanente Facility Enrollee NPDNONMUNIPRCS 11/22/2011 Historical
380543 Lehigh Southwest Cement Company, Permanente Facility Enrollee NPDNONMUNIPRCS 11/21/2011 Historical
146249 Lehigh Southwest Cement Company, Permanente Facility WDR WDR 08/20/1974 Historical
395340 Lehigh Southwest Cement Company, Permanente Facility NPDES Permit NPDINDLRG 05/01/2014 Historical
380556 Lehigh Southwest Cement Company, Permanente Facility Enrollee NPDNONMUNIPRCS 11/21/2011 Historical
Total Regulatory Measures linked to Related Parties: 15
  
  
The current report was generated with data as of: 10/28/2025
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.
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