Changes

For this reason, Stages 1-2 and 5 of the LID construction process are fundamentally similar for all '''ground-level LID''' types. To illustrate, STEP's recommended processes for excavation do not differ between LID practice types. Excavation is excavation, whether it is for a bioretention garden or a permeable pavement parking lot. On the other hand, stage 4 sub-tasks will vary substantially from LID type to LID type, since the construction processes for installing the surface of an LID practice will differ depending on whether the practice is vegetated or not. Some sub-tasks in stage 3 will also vary. For example, permeable pavements often require compaction of sub-surface storage layers. The following sections give a brief description of each over-arching stage, a list of sub-tasks for each stage, and links to the page dedicated to each main sequence construction stage.

For this reason, Stages 1-2 and 5 of the LID construction process are fundamentally similar for all '''ground-level LID''' types. To illustrate, STEP's recommended processes for excavation do not differ between LID practice types. Excavation is excavation, whether it is for a bioretention garden or a permeable pavement parking lot. On the other hand, stage 4 sub-tasks will vary substantially from LID type to LID type, since the construction processes for installing the surface of an LID practice will differ depending on whether the practice is vegetated or not. Some sub-tasks in stage 3 will also vary. For example, permeable pavements often require compaction of sub-surface storage layers. The following sections give a brief description of each over-arching stage, a list of sub-tasks for each stage, and links to the page dedicated to each main sequence construction stage.

'''Green roofs, blue roofs, and rainwater harvesting systems have specific construction sequences that differ from the main sequence described above. One day we will write guidance for these LID practices as well.'''

'''Green roofs, blue roofs, stormwater planters, and rainwater harvesting systems have specific construction sequences that differ from the main sequence described above. One day we will write guidance for these LID practices as well.'''

==Pre-construction==

==Pre-construction==