Specifications include, but are not limited to: The Consultant shall perform consultation, research, professional and technical services required for Roadway Design and related Project Development and Construction Services, on an “as-needed” basis to support the Department of Transportation (Caltrans), District 4, from Environmental phase to Construction phase , in the development and construction of proposed Caltrans transportation facilities. The Caltrans Contract Manager shall assign specific work to the Consultant to augment the Caltrans work force through the issuance of Task Orders describing in detail the services to be performed. The Consultant shall only perform work that is assigned in an authorized Task Order.