Tetra Tech EC, Inc. was the first major, full-service, environmental firm to earn ISO 14001 certification for all its services, including consulting, engineering, remediation and construction, provided by the company's more than 25 domestic and international offices and subsidiaries. Our Environmental Safety and Quality Policy, which is at the heart of our ISO 14001 commitment, follows:

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Tetra Tech EC, Inc. (TtEC) is committed to ensuring the health, safety, and well being of our employees and the communities in which we work, enhancing and protecting the environment, and providing quality services to our clients. Our Environmental, Safety and Quality (ESQ) Policy provides the framework and underlying principles for our Environmental Management System and is an integral part of how we conduct business. All TtEC associates have the right to work in a safe and healthful workplace as well as the responsibility to help create and work in a safe and environmentally protective manner:

We are committed to:

• We will complete our work successfully, with a great deal of attention to health and safety by:

• Incorporating pollution prevention and loss prevention principles into our work process.

• Employing well-trained personnel who understand and have the knowledge to fulfill their ESQ responsibilities.

• We will fully comply with all laws and regulations pertaining to our business, including company policies and procedures and the requirements of ISO 14001.

• We will commit ourselves to complying with the terms of our contracts and to meeting the four project objectives - knowing scope, budget, schedule, and level of quality.

• We will provide the level of quality our internal and external clients expect and pay for and use its attainment as our measure of success.

• We will safely and properly plan our work and work our plan.

• We will communicate and document the execution of our work.

• We will gather data and make decisions inclusively and involve employees and others affected by ESQ decisions inclusively.

• We will dedicate ourselves to continuous improvement by:

• Establishing and periodically updating ESQ improvement objectives and targets.

• Recognizing outstanding employee and project ESQ performance.

These commitments are defined in, and are fundamental to our Client Service Quality®, Do It Right®, Shared Vision®, and Zero Incident Performance® operating philosophies.