Exhibit 21
Subsidiaries of Tetra Tech, Inc.
NAME |
| JURISDICTION OF FORMATION |
Advanced Management Technology, Inc. |
| VIRGINIA |
Advent Engineering Services, Inc. |
| MICHIGAN |
America’s Schoolhouse Consulting Services, Inc. |
| NEW YORK |
America’s Schoolhouse Council, LLC |
| NEW YORK |
ARD, Inc. |
| VERMONT |
Ardaman & Associates, Inc. |
| FLORIDA |
BPR-Bâtiment Inc. |
| QUEBEC, CANADA |
BPR Construction Inc. |
| QUEBEC, CANADA |
BPR CSO Inc. |
| ONTARIO, CANADA |
BPR CSO Solutions Inc. |
| DELAWARE |
BPR-Énergie Inc. |
| QUEBEC, CANADA |
BPR Engineering Inc. (Fédérale) |
| CANADA |
BPR France Inc. |
| QUEBEC, CANADA |
BPR Inc. |
| QUEBEC, CANADA |
BPR-Infrastructure Inc. |
| QUEBEC, CANADA |
BPR Technologies Inc. |
| QUEBEC, CANADA |
BPR-Triax Inc. |
| QUEBEC, CANADA |
CICP Consultores Internacionales, LLC |
| DELAWARE |
Clancy Environmental Consultants, Inc. |
| VERMONT |
Clear Creek Holdings, LLC |
| DELAWARE |
Cosentini Associates, Inc. |
| NEW YORK |
DCK-TTEC LLC |
| DELAWARE |
Delaney Crushed Stone Products, Inc. |
| NEW YORK |
EBA Engineering Consultants Ltd. |
| ALBERTA, CANADA |
EWD Consulting Corp. |
| CANADA |
Fransen Engineering (FE) Ltd. |
| CANADA |
GeoTrans, Inc. |
| VIRGINIA |
Hagler Bailly Pakistan (Private) Limited |
| PAKISTAN |
Hartman & Associates, Inc. |
| FLORIDA |
Innogiciel Inc. |
| CANADA |
Integrated Justice Systems International, LLC |
| DELAWARE |
Inversiones Tetra Tech Chile Holding Limitada |
| CHILE |
Inversiones Tetra Tech Chile Acquisition Limitada |
| CHILE |
IP3 Afrique, LLC |
| SENEGAL |
IP3 Mena, LLC |
| EGYPT |
Kiggiak-EBA Consulting Ltd. |
| CANADA |
Metálica Consultores S.A. |
| CHILE |
Metálica Consultores de Mineraçáo Brasil LTDA |
| BRAZIL |
Mideast Construction LLC |
| DELAWARE |
Nehtruh-EBA Consulting Ltd. |
| CANADA |
PRO-telligent, LLC |
| DELAWARE |
PRO-telligent Global Guinea SARL |
| GUINEA |
PRO-telligent Global, LLC |
| VIRGINIA |
PRO-telligent Global Limited, LLC |
| KENYA |
PRO-telligent Global (South) Limited |
| MALAWI |
PRO-telligent Global SPRL |
| CONGO |
Proteus Engineers Pty Ltd. |
| AUSTRALIA |
Exhibit 21
Rooney Engineering, Inc. |
| COLORADO |
Sodat Inc. |
| QUEBEC, CANADA |
Taheel Tetra Tech L.L.C. |
| SAUDI ARABIA |
Tetra Tech Alaska, L.L.C. |
| ALASKA |
Tetra Tech AMT FZ LLC |
| FUJAIRAH, UAE |
Tetra Tech ARD, Inc. S. de R.L. de C.V |
| MEXICO |
Tetra Tech Argentina S. A. |
| ARGENTINA |
Tetra Tech Australia Holding Pty Ltd. |
| AUSTRALIA |
Tetra Tech Australia Pty Ltd |
| AUSTRALIA |
Tetra Tech BAS, Inc. |
| CALIFORNIA |
Tetra Tech (Beijing) Consultancy Company Limited |
| CHINA |
Tetra Tech Bioenergy, LLC |
| DELAWARE |
Tetra Tech Canada Construction Inc. |
| CANADA |
Tetra Tech Canada Construction LP |
| ONTARIO, CANADA |
Tetra Tech Canada Construction LP #2 |
| NEW BRUNSWICK, CANADA |
Tetra Tech Canada Holding Corporation |
| ONTARIO, CANADA |
Tetra Tech Cape Canaveral, LLC |
| FLORIDA |
Tetra Tech Caribe, Inc. |
| PUERTO RICO |
Tetra Tech Construction, Inc. |
| NEW YORK |
Tetra Tech Construction Craft Payroll LLC |
| NEW YORK |
Tetra Tech Construction National Payroll LLC |
| DELAWARE |
Tetra Tech Construction Oil & Gas Payroll, LLC |
| DELAWARE |
Tetra Tech Contingency Constructors, LLC |
| DELAWARE |
Tetra Tech Cosentini Canada LP |
| ONTARIO, CANADA |
Tetra Tech do Brasil Minerios e Metais Ltda. |
| BRAZIL |
Tetra Tech do Brasil Participacoes Ltda. |
| BRAZIL |
Tetra Tech EC, Inc. |
| DELAWARE |
Tetra Tech EC (Mass.) Corporation |
| MASSACHUSETTS |
Tetra Tech EC (Ohio) Corporation |
| DELAWARE |
Tetra Tech EM Inc. |
| DELAWARE |
Tetra Tech EMC, Inc. |
| CALIFORNIA |
Tetra Tech ES, Inc. |
| DELAWARE |
Tetra Tech ES, Inc. S. de R.L. de C.V |
| MEXICO |
Tetra Tech ES India Private Limited. |
| INDIA |
Tetra Tech Executive Services, Inc. |
| CALIFORNIA |
Tetra Tech Expeditionary Operations, Inc. |
| DELAWARE |
Tetra Tech Facilities Construction, LLC |
| NEW JERSEY |
Tetra Tech HEI, Inc. |
| TENNESSEE |
Tetra Tech Holding LLC |
| DELAWARE |
Tetra Tech IC, Inc. |
| ALBERTA, CANADA |
Tetra Tech India Limited |
| INDIA |
Tetra Tech Industriel Inc. |
| QUEBEC, CANADA |
Tetra Tech Industries Africa |
| SOUTH AFRICA |
Tetra Tech Industries General Partner Inc. |
| CANADA |
Tetra Tech Industries Inc. |
| CANADA |
Tetra Tech Industries Jamaïca |
| JAMAICA |
Tetra Tech Industries L.P. |
| QUEBEC, CANADA |
Tetra Tech International, Inc. |
| DELAWARE |
Exhibit 21
Tetra Tech International (BVI) Ltd. |
| BRITISH VIRGIN ISLANDS |
Tetra Tech International S.A.C. |
| PERU |
Tetra Tech MA, Inc. |
| DELAWARE |
Tetra Tech Middle East Ltd. |
| UNITED KINGDOM |
Tetra Tech New Martinsville, LLC |
| DELAWARE |
Tetra Tech NZ Limited |
| NEW ZEALAND |
Tetra Tech RAC Craft, LLC |
| DELAWARE |
Tetra Tech Technical Services, Inc. |
| DELAWARE |
Tetra Tech Tesoro, Inc. |
| VIRGINIA |
Tetra Tech (Tianjin) Consultancy Company Limited |
| CHINA |
Tetra Tech WEI Inc. |
| ONTARIO, CANADA |
Tetra Tech Wired Communications of California, Inc. |
| CALIFORNIA |
Thomas Communications & Technologies, LLC |
| NEW YORK |
Thomas Environmental Services, L.L.C. |
| NEW YORK |
Topo Planification Inc. |
| QUEBEC, CANADA |
Wardrop (Ghana) Ltd. |
| GHANA |
Western Utility Cable, Inc. |
| ILLINOIS |
Western Utility Central, Inc. |
| ILLINOIS |
Western Utility Contractors, Inc. |
| ILLINOIS |
Western Utility Electric, Inc. |
| ILLINOIS |
Whalen & Company, Inc. |
| DELAWARE |
Whalen Service Corps Inc. |
| DELAWARE |
9227-2970 Québec Inc. |
| QUEBEC, CANADA |
9249-2289 Québec Inc. |
| CANADA |