Manage water flow on larger parcels. Large building footprints and vast parking lots lead to higher percentages of impervious surfaces on the parcel. Use porous paving and/or infiltration devices for parking areas and paths, and use landscaped areas as “rain gardens” for stormwater management. Where possible, create some smaller parking stalls and use one-way aisles in conjunction with angled parking to reduce impervious surface cover. Plant shade trees so they will cover 50% of the parking surface at maturity. This will reduce heat and improve stormwater management. Create an on-site retention pond for peak flow reductions and to slow infiltration into the soil.