Changes

==Overview==

==Overview==

[[Infiltration trenches]] typically consist of linear, rectangular- or trapezoidal-shaped trench excavations between 0.6 and 2.4 m wide that are lined with geotextile, backfilled with clear stone aggregate and located underground. They are well suited to sites where available space for infiltration is limited to strips of land between buildings or properties, or along road right-of-ways. Trench depth is determined by the infiltration rate of the underlying native soil and maximum acceptable time to fully drain the facility (i.e., drainage time). STEP has prepared life cycle costs estimates for infiltration trenches on highly permeable, 20 mm/h infiltration rate native soil (Full Infiltration design), and on moderately permeable, 10 mm/h infiltration rate native soil (Partial Infiltration design) scenarios for comparison.  Cost estimates for both design scenarios are based on a 2,000 m² asphalt drainage area, runoff control target of 25 mm depth and 72 hour drainage period, which can be viewed below. To generate your own life cycle cost estimates customized to the development context, design criteria, and constraints applicable to your site, access the updated [https://sustainabletechnologies.ca/lid-lcct/ LID Life Cycle Costing Tool (LCCT) here].

[[Infiltration trenches]] typically consist of linear, rectangular- or trapezoidal-shaped trench excavations between 0.6 and 2.4 m wide that are lined with geotextile, backfilled with clear stone aggregate and located underground. They are well suited to sites where available space for infiltration is limited to strips of land between buildings or properties, or along road right-of-ways. Trench depth is determined by the infiltration rate of the underlying native soil and maximum acceptable time to fully drain the facility (i.e., drainage time). STEP has prepared life cycle costs estimates for infiltration trenches located on highly permeable, 20 mm/h infiltration rate native soil (Full Infiltration design), and on moderately permeable, 10 mm/h infiltration rate native soil (Partial Infiltration design) scenarios for comparison.  Cost estimates for both design scenarios are based on a 2,000 m² asphalt drainage area, runoff control target of 25 mm depth and 72 hour drainage period, which can be viewed below. To generate your own life cycle cost estimates customized to the development context, design criteria, and constraints applicable to your site, access the updated [https://sustainabletechnologies.ca/lid-lcct/ LID Life Cycle Costing Tool (LCCT) here].

==Design Assumptions==

==Design Assumptions==