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Nature of Business (Tables)

9 Months Ended

Sep. 30, 2015

Nature of Business

Schedule of list of primary operating subsidiaries and their reportable operating segment

Subsidiary		Operating Segment		Prior Operating Segment
ARB, Inc. (“ARB”)		West		West
ARB Structures, Inc.		West		West
Q3 Contracting, Inc. (“Q3C”)		West		West
Rockford Corporation (“Rockford”)		West		West
Vadnais Trenchless Services, Inc. (“Vadnais”); acquired in 2014		West		West
Silva Group (“Silva”)		East		East
Cardinal Contractors, Inc.		East		East
BW Primoris, LLC (“BWP”)		East		East
James Construction Group, LLC (“JCG”):
JCG Heavy Civil Division		East		East
JCG Infrastructure and Maintenance Division		East		East
Primoris Energy Services Corporation (“PES”)		Energy		East
PES Industrial Division (formerly JCG Industrial Division)		Energy		East
Primoris Aevenia, Inc. (“Aevenia”); acquired February 28, 2015		Energy		N/A
OnQuest, Inc.		Energy		Engineering
OnQuest Canada, ULC		Energy		Engineering