This construction stage differs between LID practice type. The finishing grades and surface layer installation page has guidance for vegetated LIDS (bioretention, bioswales, enhanced grass swales, and vegetated filter strips; can also include infiltration chambers/trenches/soakaways, depending on the design) and permeable pavements. | This construction stage differs between LID practice type. The finishing grades and surface layer installation page has guidance for vegetated LIDS (bioretention, bioswales, enhanced grass swales, and vegetated filter strips; can also include infiltration chambers/trenches/soakaways, depending on the design) and permeable pavements. |