FRS Facility Detail Report


UNIMIN CORPORATION

EPA Registry Id: 110001183807
100 CAMINO DIABLO ROAD
BYRON, CA 94514


The facility locations displayed
come from the FRS Spatial
Coordinates tables. They are the
best representative locations for
the displayed facilities based on
the accuracy of the collection
method and quality assurance
checks performed against each
location. The North American
Datum of 1983 is used to display
all coordinates.

Environmental Interests

Information System System Facility Name Information System Id/Report Link Environmental Interest Type Data Source Last Updated Date Supplemental Environmental Interests:
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (ICIS-NPDES)
G3 MINERALS BYRON PLANT CAZ425605 ICIS-NPDES NON-MAJOR ICIS 07/01/2015
CA-CALIFORNIA ENVIRONMENTAL REPORTING SYSTEM
UNIMIN CORPORATION 10008472 STATE MASTER CA-CERS
CERS2-10008472-02
EPCRA
CERS2-10008472-09
OIL CONTROL
CALIFORNIA - ENVIROVIEW
UNIMIN CORPORATION 164434 STATE MASTER CA-ENVIROVIEW
CERS-10008472
RMP REPORTER
CERS-10008472
HAZARDOUS WASTE PROGRAM
CERS-10008472
SPCC
OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION INFORMATION SYSTEM
UNIMIN CORPORATION 314445412 OSHA ESTABLISHMENT OSHA-OIS 05/19/2014
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (ICIS-NPDES)
G3 MINERALS BYRON PLANT CAZ425605 STORM WATER INDUSTRIAL ICIS 07/01/2015
EMISSION INVENTORY SYSTEM (EIS)
G3 MINERALS BYRON PLANT 201411 HAZARDOUS AIR POLLUTANT MAJOR EIS 04/22/2025

Additional EPA Reports:  

MyEnvironment  Enforcement and Compliance  Facility Coordinates Viewer  Watershed Report

Standard Industrial Classification Codes (SIC)

Data Source SIC Code Description Primary
CA-ENVIROVIEW
1446
INDUSTRIAL SAND

CA-CERS
1446
INDUSTRIAL SAND

NPDES
1446
INDUSTRIAL SAND

OSHA-OIS
1446
INDUSTRIAL SAND

Facility Codes and Flags

EPA Region: 09
Duns Number:
Congressional District Number: 09
Legislative District Number:
HUC Code/Watershed: 18040003 / SAN JOAQUIN DELTA
US Mexico Border Indicator: NO
Federal Facility: NO
Tribal Land: NO

Alternative Names

Alternative Name Source of Data
G3 MINERALS, BYRON PLANT EIS

Organizations

Affiliation Type Name DUNS Number Information System Mailing Address
OWNER
G3 ENTERPRISESNA INC.
CA-ENVIROVIEW
View

National Industry Classification System Codes (NAICS)

Data Source NAICS Code Description Primary
EIS 212322 INDUSTRIAL SAND MINING.
OSHA-OIS 212322 INDUSTRIAL SAND MINING.

Facility Mailing Addresses

Affiliation Type Delivery Point City Name State Postal Code Information System
OWNER 502 E. WHITMORE AVE. MODESTO CA 95358 CA-CERS
OPERATOR 1300 CAMINO DIABLO RD BYRON CA 94514 CA-CERS
ENVIRONMENTAL CONTACT 4000 BAKER RD OTTAWA IL 61350-9500 CA-CERS
FACILITY MAILING ADDRESS 1300 CAMINO DIABLO RD BYRON CA 94514 CA-ENVIROVIEW
ENVIRONMENTAL CONTACT 2612 CROWS LANDING ROAD MODESTO CA 95358 CA-CERS
OWNER 502 E. WHITMORE AVE. MODESTO 95358 CA-ENVIROVIEW
ENVIRONMENTAL CONTACT 2612 CROWS LANDING ROAD MODESTO 95358 CA-ENVIROVIEW
FACILITY MAILING ADDRESS 1300 CAMINO DIABLO RD BYRON CA 94514 CA-CERS

Contacts

Affiliation Type Full Name Office Phone Information System Mailing Address
UNKNOWN CONTACT
BRUCE PRYBYLINSKI
9255132493
CA-CERS


UNKNOWN CONTACT
BRUCE PRYBYLINSKI
9256981870
CA-CERS


OPERATOR
G3 ENTERPRISES, INC.
9256343575
CA-CERS
View
UNKNOWN CONTACT
STEVEN SYLVESTER
2092027971
CA-CERS


ENVIRONMENTAL CONTACT
STEVEN SYLVESTER
(209) 341-6804
CA-ENVIROVIEW
View
OPERATOR
BRUCE PRYBYLINSKI


NPDES


OWNER
UNIMIN CORPORATION
9256343575
CA-CERS


OWNER
G3 ENTERPRISES, INC.
9256343575
CA-CERS
View
UNKNOWN CONTACT
CHET MACKEY
9253814483
CA-CERS


ENVIRONMENTAL CONTACT
CHET MACKEY
8154344178
CA-CERS
View
ENVIRONMENTAL CONTACT
STEVEN SYLVESTER
209-341-6804
CA-CERS
View

Query executed on: OCT-15-2025