Grading activities take place after clearing the project site of demolition debris, vegetation, and top soil. Grading refers to the adjustment of site slopes to the extent required to facilitate new construction and site function, including proper storm water run-off gradients and features. Having both an existing site survey (including a soil investigation) and a new construction site plan are critical to understanding the starting topography and desired end state throughout the project area. Also important is an evaluation of the existing site soils to match new construction purposes such as foundation work, or even to facilitate temporary construction needs such as equipment movement and soil sediment control.