ROLL CALL 6133

Federal Signal Environmental Products Group, Elgin, Ill., has promoted Craig Dow to international sales manager. He will manage the sales force outside of North America.

Earth Tech, Long Beach, Calif., has named three vice presidents: Pamela Murray Johnson, who will be in the Alexandria, Va., office; Joe Cazares, who will be in the San Diego office; and Lou Tortora Jr., who will work in the company's Milwaukee, Wis., office.

San Diego-based DriveCam Video Systems has named Dan Hammang chief financial officer.

Heil Environmental, Chattanooga, Tenn., has hired Chad Hardy as western region sales manager.

CTI and Associates, Brighton, Mich., has named Morgan Subbarayan principal engineer and manager of its solid waste division. The company also has appointed Te-Yang Soong manager of engineering and design services, and Matthew Williams senior project manager.

Webb Wheel Products, Cullman, Ala., has named Dan Allen plant manager of its Transit Business unit.

SCS Engineers, Sacramento, Calif., has named Paul Damian its California risk assessment practice leader and national partner for risk assessment.