Dennis Patrick, M.S. CIH, CSP, CHMM, is with Environmental Planning Group Ltd. The Ashley, Mich.-based company can be reached at 989-388-2088 or visit the website at www.epglimited.com. Patrick is a member of the American Industrial Hygiene Association (AIHA). The Falls Church, Va.-based organization can be reached at 703-849-8888 or visit www.aiha.org.