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Oregon Department of Environmental Quality Headquarters: 811 Sixth Ave., Portland, OR 97204-1390 Phone: 503-229-5696 or toll free in Oregon 1-800-452-4011 Oregon Telecommunications Relay Service: 1-800-735-2900 FAX: 503-229-6124 The Oregon Department of Environmental Quality is a regulatory agency authorized to protect Oregon's environment by the State of Oregon and the Environmental Protection Agency. DEQ Web site privacy notice