EX-21 5 dex21.txt SUBSIDIARIES Exhibit 21 CLEAN HARBORS, INC. AND SUBSIDIARIES SUBSIDIARIES
State of Incorporation Principal Place of Business Clean Harbors Environmental MA 1501 Washington Street Services, Inc. Braintree, MA 02185-0327 Clean Harbors of Natick, Inc. MA 1501 Washington Street Braintree, MA 02185-0327 Clean Harbors of Braintree, Inc. MA 1501 Washington Street Braintree, MA 02185-0327 Clean Harbors Services, Inc. MA 1501 Washington Street Braintree, MA 02185-0327 Clean Harbors of Baltimore, Inc. PA 1501 Washington Street Braintree, MA 02185-0327 Clean Harbors of Connecticut, Inc. CT 1501 Washington Street Braintree, MA 02185-0327 Clean Harbors Kingston MA 1501 Washington Street Facility Corporation Braintree, MA 02185-0327 Harbor Management Consultants, Inc. MA 1501 Washington Street Braintree, MA 02185-0327 Murphy's Waste Oil Service, Inc. MA 1501 Washington Street Braintree, MA 02185-0327 Mr. Frank, Inc. IL 1501 Washington Street Braintree, MA 02185-0327 Northeast Casualty Risk VT 1501 Washington Street Retention Group, Inc. Braintree, MA 02185-0327 Spring Grove Resource DE 1501 Washington Street Recovery, Inc. Braintree, MA 02185-0327