Changes

Large commercial sites include big-box stores, warehouses, and shopping malls. Often located in highly urbanized commercial centres, they are usually owned and operated by land management companies.   

Large commercial sites include big-box stores, warehouses, and shopping malls. Often located in highly urbanized commercial centres, they are usually owned and operated by land management companies.   

Large commercial sites are rarely more than two stories in height. Typically they have large and often underused parking lots and flat roofs that drain internally through the building to onsite storm sewers. Though these sites are expansive, they rarely have complex networks of pedestrian walkways and often rely on vehicular traffic to get site users onsite.

Large commercial sites are rarely more than two storeys in height. Typically they have large and often underused parking lots and flat roofs that drain internally through the building to onsite storm sewers. Though these sites are expansive, they rarely have complex networks of pedestrian walkways and often rely on vehicular traffic to get site users onsite.

===Parking areas===

===Parking areas===