[[File:C.C 25mm Retention Partial Infiltration.png|thumb|left|400px|'''Construction Costs Per Unit Drainage Area (CAD$/m<sup>2</sup>) - Partial Infiltration Design, 25 mm Retention''']] | [[File:C.C 25mm Retention Partial Infiltration.png|thumb|left|400px|'''Construction Costs Per Unit Drainage Area (CAD$/m<sup>2</sup>) - Partial Infiltration Design, 25 mm Retention''']] |