[en] The Hanford Dose Overview Program is a Hanford site-wide service established to provide a method of assuring the consistency of Hanford-related environmental dose assessments. This document serves as a guide to the Hanford contractors for obtaining or performing Hanford-related environmental dose calculations. The program serves as a focal point for Hanford environmental dose calculation activities and provides a number of services for Hanford contractors involved in calculation of environmental doses. Site specific input data and assumptions have been compiled and are maintained for use by the contractors in calculating Hanford environmental doses. The data and assumptions, to the extent they apply, should be used in Hanford calculations. These data are not all inclusive and will be modified should additional or more appropriate information become available