Abstract: Allowable residual concentration in soil is one of the important bases guiding the engineering design, implementation and management. It involves many aspects, such as safety, economy, technique feasibility and social influences, etc. The paper introduces the physical model and developing concept for the calculation program of allowable residual concentration in soil and environmental dose, and a demonstrative calculation is also presented with analysis at last.

Key words: allowable, residual concentration, radioactivity, dose, soil