General Information
Party ID	Party Name	Party Classification	Mailing Address	Work Phone	Email/Website
624262	Stevens Creek Quarry, Inc.	Privately-Owned Business	12100 Stevens Canyon Road Cupertino, CA 95014	408-253-2512	null	

Related Places
Place ID	Place Name	County	Region	Place Type	Relationship to Party	Relationship Start Date	Relationship End Date
863643	Stevens Creek Quarry	Santa Clara	2	Sand and Gravel Mining	Owner and Operator	05/12/2021	null	

Related Parties
Party ID	Party Name	Party Type	Role/Relationship	Relationship Start Date	Relationship End Date	Classification
629636	Ryan Charney	Person	Data Submitter	12/08/2021	null	null	
629196	Lisa Welsh	Person	Data Submitter	11/19/2021	null	null	
627845	Neftali Romero	Person	Data Submitter	09/27/2021	null	null	
627172	Julio Cazares	Person	Data Submitter	08/26/2021	null	null	
624263	Jason Voss	Person	Legally Responsible Official	05/12/2021	null	null	
364108	Adrienne Miller	Person	Data Submitter	08/26/2021	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
443276	NPDES Permit	2	2 43I006687	NPDES R2-2021-0010 for Stevens Creek Quarry, Inc.	Active	NPDMINING	R2-2021-0010	07/01/2021	null	Discharger	05/12/2021	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.
1123377	12/31/2023	CAT2	Chromium (VI) Monthly Average limit is 5.6 ug/L and reported value was 7.3 ug/L at EFF-004.	Violation	N	eSMR	Stevens Creek Quarry	443276	R2-2021-0010	Y	
1123570	12/18/2023	Surface Water	Exceedance of R2-2021-0010, Section V. Turbidity, Instantaneous Maximum limit is 50 NTU and reported value was 127.47 NTU.	Violation	N	eSMR	Stevens Creek Quarry	443276	R2-2021-0010	N	
1123568	12/18/2023	Deficient Monitoring	Exceedance of R2-2021-0010, Section V. SCQ did not sample for Dissolved Oxygen in milligrams per liter (mg/L).	Violation	N	eSMR	Stevens Creek Quarry	443276	R2-2021-0010	N	
1123569	12/18/2023	Deficient Monitoring	Exceedance of R2-2021-0010, Section V. SCQ did not sample for Dissolved Oxygen in milligrams per liter (mg/L).	Violation	N	eSMR	Stevens Creek Quarry	443276	R2-2021-0010	N	
1125371	02/01/2024	Surface Water	Exceedance of R2-2021-0010, Section V. Turbidity, Instantaneous Maximum limit is 55 NTU and reported value was 57.18 NTU.	Violation	N	eSMR	Stevens Creek Quarry	443276	R2-2021-0010	N	
1125370	02/01/2024	CAT2	Chromium (VI) Monthly Average limit is 5.6 ug/L and reported value was 9.8 ug/L at EFF-004.	Violation	N	eSMR	Stevens Creek Quarry	443276	R2-2021-0010	N	
1123577	12/18/2023	CAT2	Chromium (VI) Monthly Average limit is 5.6 ug/L and reported value was 7.3 ug/L at EFF-004.	Violation	N	eSMR	Stevens Creek Quarry	443276	R2-2021-0010	N	
1124650	01/22/2024	Surface Water	Exceedance of R2-2021-0010, Section V. Turbidity, Instantaneous Maximum limit is 90.9 NTU (10% increase from 82.65 NTU background level) and reported value was 205.12 NTU.	Violation	N	eSMR	Stevens Creek Quarry	443276	R2-2021-0010	N	
1123571	12/18/2023	Deficient Monitoring	Exceedance of R2-2021-0010, Section V. SCQ did not sample for Dissolved Oxygen in milligrams per liter (mg/L).	Violation	N	eSMR	Stevens Creek Quarry	443276	R2-2021-0010	N	
1123379	12/18/2023	Deficient Monitoring	Exceedance of R2-2021-0010, Section V. SCQ did not sample for Dissolved Oxygen in milligrams per liter (mg/L).	Violation	N	eSMR	Stevens Creek Quarry	443276	R2-2021-0010	N	
1123380	12/18/2023	Deficient Monitoring	Exceedance of R2-2021-0010, Section V. SCQ did not sample for Dissolved Oxygen in milligrams per liter (mg/L).	Violation	N	eSMR	Stevens Creek Quarry	443276	R2-2021-0010	N	
1123381	12/18/2023	Deficient Monitoring	Exceedance of R2-2021-0010, Section V. SCQ did not sample for Dissolved Oxygen in milligrams per liter (mg/L).	Violation	N	eSMR	Stevens Creek Quarry	443276	R2-2021-0010	N	
1124651	01/22/2024	Surface Water	Exceedance of R2-2021-0010, Section V. Turbidity, Instantaneous Maximum limit is 55 NTU and reported value was 143.37 NTU.	Violation	N	eSMR	Stevens Creek Quarry	443276	R2-2021-0010	N	
1123376	12/18/2023	Deficient Monitoring	Exceedance of R2-2021-0010, Section V. SCQ did not sample for Dissolved Oxygen in milligrams per liter (mg/L).	Violation	N	eSMR	Stevens Creek Quarry	443276	R2-2021-0010	N	
1124649	01/22/2024	CAT2	Chromium (VI) Monthly Average limit is 5.6 ug/L and reported value was 9.8 ug/L at EFF-004.	Violation	N	eSMR	Stevens Creek Quarry	443276	R2-2021-0010	N	
1123574	12/18/2023	Deficient Monitoring	Exceedance of R2-2021-0010, Section V. SCQ did not sample for Dissolved Oxygen in milligrams per liter (mg/L).	Violation	N	eSMR	Stevens Creek Quarry	443276	R2-2021-0010	N	
1123378	12/18/2023	Surface Water	Exceedance of R2-2021-0010, Section V. Turbidity, Instantaneous Maximum limit is 50 NTU and reported value was 127.47 NTU.	Violation	N	eSMR	Stevens Creek Quarry	443276	R2-2021-0010	Y	

Enforcement Actions
Enforcement ID	Enforcement Type	Enf. Order No.	Title	Program	Effective Date	Status
444599	Cease and Desist Order	R2-2021-0011	Cease and Desist Order R2-2021-0011 for Cupertino Quarry (Stevens Creek Quarry, Inc.)	NPDMINING	07/01/2021	Active	

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