Changes

==Finishing grades and surface layer installation==

==Finishing grades and surface layer installation==

This construction stage differs between LID practice types. The finishing grades and surface layer installation: vegetated LIDs page has guidance for vegetated LIDs, and the finishing grades and surface layer installation: permeable pavements has guidance for non-vegetated LIDs. In many cases the surface of infiltration systems will be traditional asphalt, concrete, or pavers; STEP does not provide guidance on installing non-permeable surfaces.   

This construction stage differs between LID practice types. The finishing grades and surface layer installation: vegetated LIDs page has guidance for vegetated LIDs, and the finishing grades and surface layer installation: permeable pavements has guidance for non-vegetated LIDs. In many cases the surface of infiltration systems will be traditional asphalt, concrete, or pavers; STEP does not provide guidance on installing non-permeable surfaces.   

{| class="wikitable"

{| class="wikitable"

!Permeable pavements

!Permeable pavements

|-

|-

|*geotextile (if applicable)

|*soil media installation and soil amendments

| PP

| PP

|-

|-

|*underdrain

|*finish grading

| PP

| PP

|-

|-

|*impermeable liners

|*large stone and riprap

|PP

|PP

|-

|-

|*overflow

|*plant verification and installation

|PP

|PP

|-

|-

|*monitoring wells

|*mulch placement

|pp

|pp

|-

|-

|*storage reservoir

|*stabilizing contributing drainage area and planting adjacent vegetation

|PP

|PP

|}

|}