General Information
Party ID	Party Name	Party Classification	Mailing Address	Work Phone	Email/Website
47745	Unimin Corporation	Privately-Owned Business	1300 Camino Diablo Road Byron, CA 94514	815-431-2216	null	

Related Places
Place ID	Place Name	County	Region	Place Type	Relationship to Party	Relationship Start Date	Relationship End Date
269009	Unimin Mine Reclamation	Contra Costa	5S	Facility	Owner	04/19/2005	null	
269006	G3 Minerals, Byron Plant	Contra Costa	5S	Sand and Gravel Mining	Owner	05/30/1980	10/12/2011	

Related Parties
Party ID	Party Name	Party Type	Role/Relationship	Relationship Start Date	Relationship End Date	Classification

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
140546	WDR	5S	5B072045001	WDR 92-157 for Unimin Corporation, Byron Sand Plant	Active	WDRMINING	R5-1992-0157	08/14/1992	null	Discharger	08/14/1992	10/12/2011	
139461	WDR	5S	5B072045001	WDR 80-066 for UNIMIN CORPORATION	Historical	WDR	80-066	05/30/1980	03/31/1994	Discharger	05/30/1980	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
380845	13267 Letter	null	13267 Letter 08/16/2011 for Unimin Corporation	WDR	08/16/2011	Historical	
231390	Staff Enforcement Letter	null	Enforcement - 5B072045001	WDR	08/22/2000	Historical	

Regulatory Measures linked to Related Parties
Reg. Measure ID	Organization	Regulatory Measure Type	Program	Effective Date	Status