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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
31208 National Cement Company Privately-Owned Business 15821 Ventera Boulevard 435 Encino, CA 91436 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
248645 Plant GW Treatment System - National Cement Kern 6B Concrete Manufacturing Owner 10/26/2000 None
243901 National Cement Old Ind LF Kern 6B Facility Owner 05/13/1993 None
236769 Lebec Cement Plant Kern 6B Sand and Gravel Mining Operator 10/26/2000 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
109433 John Heiser Person Facility Contact 10/26/2000 None None
108325 Jerry Stefanik Person Facility Contact 10/26/2000 None None
Total Related Parties: 2
  
  
  
  
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?
445491 Enrollee - NPDES 6V 6B150009004 Active NPDNONMUNIPRCS R6T-2016-0011 01/07/2021 None Discharger 01/07/2021 None N
374383 Enrollee 6V 6B150009004 Historical NPDNONMUNIPRCS R6T-2010-0024 08/12/2011 01/07/2021 Discharger 06/16/2004 None N
203938 Enrollee 6V 6B159007001 Historical LNDISPOTH R6T-2004-0025 03/14/1991 06/10/2003 Discharger 09/01/2005 None N
203936 Enrollee 6V 6B150009004 Historical NPDNONMUNIPRCS 98-075 12/26/2001 11/06/2003 Discharger 09/01/2005 None N
147798 NPDES Permit 6V 6B159301001 Historical NPDESWW 00-011 03/09/2000 03/09/2005 Discharger 03/09/2000 None N
147646 WDR 6V 6B159007001 Historical LNDISPOTH 6-00-37 05/10/2000 05/10/2000 Discharger 05/10/2000 None N
147597 WDR 6V 6B159007001 Historical LNDISPOTH 97-098 10/09/1997 05/10/2000 Discharger 10/09/1997 None N
147557 WDR 6V 6B159007001 Historical LNDISPOTH 00-035 05/10/2000 06/11/2003 Discharger 05/10/2000 None N
146154 NPDES Permit 6V 6B159301001 Historical NPDESWW 93-041 05/13/1993 03/09/2000 Discharger 05/13/1993 None N
145890 WDR 6V 6B159007001 Historical LNDISPOTH 91-019A1 04/20/1995 10/09/1997 Discharger 04/20/1995 None N
145889 WDR 6V 6B159007001 Historical LNDISPOTH 91-019 03/14/1991 10/09/1997 Discharger 03/14/1991 None N
132807 WDR 6V 6B159007001 Active LNDISPOTH 03-025 06/11/2003 None Discharger 06/11/2003 None N
Total Regulatory Measures: 12
  
  
  
  
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.
1136465 11/21/2024 Late Report Report 2 30-day periods late Violation N Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136463 11/21/2024 Late Report Report 5 30-day period late Violation N Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136458 11/21/2024 Late Report Report 8 30-day period late Violation N Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136451 11/21/2024 Late Report Report 12 30-day periods late Violation N Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136447 11/21/2024 Late Report Report 15 30-day periods late Violation N Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136440 11/21/2024 Late Report Report 18 30-day periods late Violation N Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136437 11/21/2024 Late Report Report 22 30-day periods late as of 11/21/2024 Violation N Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136436 11/21/2024 Late Report Report 25 30-day periods late as of 11/21/2024 Violation N Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136435 11/21/2024 Late Report Report 28 30-day periods late as of 11/21/2024 Violation N Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136420 11/21/2024 Late Report Late for 31 30-day periods as of 11/21/2024 Violation N Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136180 09/30/2024 CAT2 Arsenic, Total Recoverable Monthly Maximum limit is 10.0 ug/L and reported value Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136179 09/30/2024 CAT2 Arsenic, Total Recoverable Monthly Maximum limit is 10.0 ug/L and reported value Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136178 06/30/2024 CAT2 Arsenic, Total Recoverable Monthly Maximum limit is 10.0 ug/L and reported value Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136177 06/30/2024 CAT2 Arsenic, Total Recoverable Monthly Maximum limit is 10 ug/L and reported value w Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136176 03/31/2024 CAT2 Arsenic, Total Recoverable Monthly Maximum limit is 10 ug/L and reported value w Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136174 03/31/2024 CAT2 Tetrachloroethene Monthly Maximum limit is 0.5 ug/L and reported value was 1.41 Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136173 03/31/2024 CAT2 Arsenic, Total Recoverable Monthly Maximum limit is 10 ug/L and reported value w Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136172 03/31/2024 CAT2 Tetrachloroethene Monthly Maximum limit is 0.5 ug/L and reported value was 1.4 u Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136171 12/31/2023 CAT2 Arsenic, Total Recoverable Monthly Maximum limit is 10.0 ug/L and reported value Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136170 12/31/2023 CAT2 Arsenic, Total Recoverable Monthly Maximum limit is 10 ug/L and reported value w Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136169 09/30/2023 CAT2 Chromium (VI) Monthly Maximum limit is 5.5 ug/L and reported value was 7.2 ug/L. Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136168 09/30/2023 CAT2 Arsenic, Total Recoverable Monthly Maximum limit is 10 ug/L and reported value w Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136167 09/30/2023 CAT2 Trichloroethene Monthly Maximum limit is 0.5 ug/L and reported value was 1.3 ug/ Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136166 09/30/2023 CAT2 cis-1,2-Dichloroethene Monthly Maximum limit is 0.5 ug/L and reported value was Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136165 09/30/2023 CAT2 Tetrachloroethene Monthly Maximum limit is 0.5 ug/L and reported value was 5 ug/ Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136164 09/30/2023 CAT2 Lead, Total Recoverable Monthly Maximum limit is 0.5 ug/L and reported value was Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136163 09/30/2023 CAT2 Chromium (VI) Monthly Maximum limit is 5.5 ug/L and reported value was 7.6 ug/L. Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136162 09/30/2023 CAT2 Arsenic, Total Recoverable Monthly Maximum limit is 10 ug/L and reported value w Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136161 09/06/2023 CAT2 Tetrachloroethene Daily Maximum limit is 1.6 ug/L and reported value was 5 ug/L. Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136160 06/30/2023 CAT2 Arsenic, Total Recoverable Monthly Maximum limit is 10.0 ug/L and reported value Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136159 06/30/2023 CAT2 Arsenic, Total Recoverable Monthly Maximum limit is 10.0 ug/L and reported value Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136158 03/31/2023 CAT2 Arsenic, Total Recoverable Monthly Maximum limit is 10.0 ug/L and reported value Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136157 03/31/2023 CAT2 Arsenic, Total Recoverable Monthly Maximum limit is 10 ug/L and reported value w Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136150 03/27/2023 CAT2 Lead, Total Recoverable Monthly Maximum limit is 3.2 ug/L and reported value was Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136149 12/31/2022 CAT2 Arsenic, Total Recoverable Monthly Maximum limit is 10.0 ug/L and reported value Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 N
1136148 12/31/2022 CAT2 Arsenic, Total Recoverable Monthly Maximum limit is 10.0 ug/L and reported value Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136145 09/30/2022 CAT2 Arsenic, Total Recoverable Monthly Maximum limit is 10 ug/L and reported value w Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136144 09/30/2022 CAT2 Chromium (VI) Monthly Maximum limit is 5.5 ug/L and reported value was 6.8 ug/L. Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136142 09/30/2022 CAT2 Arsenic, Total Recoverable Monthly Maximum limit is 10 ug/L and reported value w Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136139 09/21/2022 OEV TPH C13-C22 Daily Maximum limit is 50 ug/L and reported value was 230 ug/L. Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136138 06/30/2022 CAT2 Arsenic, Total Recoverable Monthly Maximum limit is 10 ug/L and reported value w Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136133 06/30/2022 OEV TPH C13-C22 Daily Maximum limit is 50.0 ug/L and reported value was 160.0 ug/L. Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136131 06/09/2022 OEV TPH C13-C22 Daily Maximum limit is 50 ug/L and reported value was 170 ug/L. Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136126 06/09/2022 OEV TPH C13-C22 Daily Maximum limit is 50.0 ug/L and reported value was 160.0 ug/L. Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136125 06/09/2022 CAT1 Nitrate, Total (as N) Daily Maximum limit is 10.0 mg/L and reported value was 12 Violation N Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136123 03/31/2022 CAT2 Chromium (VI) Monthly Maximum limit is 5.5 ug/L and reported value was 11.3 ug/L Violation N Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136079 03/31/2022 CAT2 Arsenic, Total Recoverable Monthly Maximum limit is 10.0 ug/L and reported value Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136078 03/31/2022 CAT2 Chromium (VI) Monthly Maximum limit is 10 ug/L and reported value was 12 ug/L. Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136077 03/31/2022 CAT2 Arsenic, Total Recoverable Monthly Maximum limit is 10.0 ug/L and reported value Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136076 03/17/2022 CAT2 Chromium (VI) Daily Maximum limit is 11.0 ug/L and reported value was 11.3 ug/L. Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136075 03/17/2022 CAT2 Chromium (VI) Daily Maximum limit is 11 ug/L and reported value was 12.1 ug/L. Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136074 12/31/2021 CAT2 Arsenic, Total Recoverable Monthly Maximum limit is 10.0 ug/L and reported value Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136073 12/31/2021 CAT2 Arsenic, Total Recoverable Monthly Maximum limit is 10.0 ug/L and reported value Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136072 09/30/2021 CAT2 Arsenic, Total Recoverable Monthly Maximum limit is 10.0 ug/L and reported value Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136071 09/30/2021 CAT2 Arsenic, Total Recoverable Monthly Maximum limit is 10.0 ug/L and reported value Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136070 06/30/2021 CAT2 Arsenic, Total Recoverable Monthly Maximum limit is 10.0 ug/L and reported value Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136069 03/31/2021 CAT2 Arsenic, Total Recoverable Monthly Maximum limit is 10 ug/L and reported value w Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136068 03/31/2021 CAT2 Chromium (VI) Monthly Maximum limit is 5.5 ug/L and reported value was 20 ug/L. Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136067 03/31/2021 CAT2 Arsenic, Total Recoverable Monthly Maximum limit is 10.0 ug/L and reported value Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136066 03/31/2021 CAT2 Arsenic, Total Recoverable Monthly Maximum limit is 10 ug/L and reported value w Violation N Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136065 03/31/2021 CAT2 Chromium (VI) Monthly Maximum limit is 5.5 ug/L and reported value was 13 ug/L. Violation N Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136064 03/31/2021 CAT2 cis-1,2-Dichloroethene Monthly Maximum limit is 0.5 ug/L and reported value was Violation N Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136063 03/31/2021 CAT2 Tetrachloroethene Monthly Maximum limit is 0.5 ug/L and reported value was 1.68 Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136062 03/18/2021 CAT2 Tetrachloroethene Daily Maximum limit is 1.60 ug/L and reported value was 1.68 u Violation N Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136061 03/18/2021 CAT2 Chromium (VI) Daily Maximum limit is 11.0 ug/L and reported value was 20 ug/L. Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
1136060 03/18/2021 CAT2 Chromium (VI) Daily Maximum limit is 11 ug/L and reported value was 13 ug/L. *** Violation None Report Plant GW Treatment System - National Cement 445491 R6T-2016-0011 Y
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: 66
*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
459751 Notice of Violation None NOV 01/17/2025 for Tejon Ranchcorp NPDNONMUNIPRCS 01/17/2025 Active
383964 Oral Communication None Oral Com 03/21/2012 for Lafarge North America Inc NPDNONMUNIPRCS 03/21/2012 Historical
375805 Staff Enforcement Letter None SEL 09/08/2010 for NATIONAL CEMENT CO NPDNONMUNIPRCS 09/08/2010 Historical
254772 Oral Communication UNKNOWN Enforcement - 6B150009004 NPDNONMUNIPRCS 03/03/2004 Historical
253017 Staff Enforcement Letter UNKNOWN Enforcement - 6B159007001 LNDISPOTH 06/16/2004 Historical
252974 Staff Enforcement Letter UNKNOWN Enforcement - 6B150009004 NPDNONMUNIPRCS 06/16/2004 Historical
244340 Clean-up and Abatement Order 6-90-059A4 Enforcement - 6B159007001 LNDISPOTH 09/01/2000 Historical
223378 Clean-up and Abatement Order 90-059A1 Enforcement - 6B159007N01 UNREGS 12/30/1996 Historical
223167 Clean-up and Abatement Order 97-099 Enforcement - 6B159007001 LNDISPOTH 10/09/1997 Historical
223147 Cease and Desist Order 97-100 CDO 6-97-100 for National Cement Company Lebec Cement Plant LNDISPOTH 10/09/1997 Historical
223140 Clean-up and Abatement Order 90-059A2 Enforcement - 6B159007N01 UNREGS 11/04/1998 Historical
219475 Clean-up and Abatement Order 90-059 Enforcement - 6B159007N01 UNREGS 10/09/1990 Historical
Total Enforcement Actions: 12
  
  
  
  
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: 02/25/2025
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.
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