FRS Facility Detail Report


MASTER BLOCK INC

EPA Registry Id: 110021305602
12620 W BUTLER DR
EL MIRAGE, AZ 85335


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:
EMISSION INVENTORY SYSTEM (EIS)
MASTER BLOCK INC 548311 AIR EMISSIONS CLASSIFICATION UNKNOWN EIS 08/16/2024
OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION INFORMATION SYSTEM
MASTER BLOCK 316914944 OSHA ESTABLISHMENT OSHA-OIS 12/18/2013
TOXICS RELEASE INVENTORY SYSTEM
MASTER BLOCK INC 8533WMSTRB1262W TRI REPORTER API 06/30/2025
OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION INFORMATION SYSTEM
MASTER BLOCK 316914647 OSHA ESTABLISHMENT OSHA-OIS 08/15/2014

Additional EPA Reports:  

MyEnvironment  Enforcement and Compliance  Facility Coordinates Viewer  Watershed Report

Standard Industrial Classification Codes (SIC)

Data Source SIC Code Description Primary
OSHA-OIS
3241
CEMENT, HYDRAULIC

OSHA-OIS
3241
CEMENT, HYDRAULIC

Facility Codes and Flags

EPA Region: 09
Duns Number:
Congressional District Number: 08
Legislative District Number:
HUC Code/Watershed: 15070102 / AGUA FRIA
US Mexico Border Indicator: NO
Federal Facility: NO
Tribal Land: NO

Alternative Names

No Alternative Names returned.

Organizations

No Organizations returned.

National Industry Classification System Codes (NAICS)

Data Source NAICS Code Description Primary
OSHA-OIS 327310 CEMENT MANUFACTURING.
TRIS 327331 CONCRETE BLOCK AND BRICK MANUFACTURING.
OSHA-OIS 327310 CEMENT MANUFACTURING.
EIS 327390 OTHER CONCRETE PRODUCT MANUFACTURING.

Facility Mailing Addresses

No Facility Mailing Addresses returned.

Contacts

No Contacts returned.

Query executed on: OCT-15-2025


Additional information for CERCLIS or TRI sites:

This information resource is not maintained, managed, or owned by the Environmental Protection Agency (EPA) or the Envirofacts Support Team. Neither the EPA nor the Envirofacts Support Team is responsible for their content or site operation. The Envirofacts Warehouse provides this reference only as a convenience to our Internet users.

  • National Library of Medicine (NLM) TOXMAP