5901 HIGHWAY PL WHOLE SITE 2019-06-04

I Most of the site soils will be disturbed during construction. The area where soils have been disturbed,the soil will be amended according to the following procedures: 1. Scarify subsoil to a depth of one foot. 2. In planting beds,will place three inches of compost and till in to an eight-inch depth. 3. In turf areas,will place two inches of compost and till in to an eight-inch depth. 4. Apply two to four inches of arborist wood chip, coarse bark mulch,or compost mulch to planting beds after final planting. During construction,the following strategies will be considered on the project site: 1.Retaining the duff layer,native topsoil, and natural vegetation in an undisturbed state to the maximum extent practicable. 2.Retaining to the maximum extent practicable the features on the site that provide natural stormwater management. 3.Maintaining predevelopment flow path lengths and natural drainage patterns whenever possible. 4.Keeping distances for overland flow short to promote sheet flow and minimize concentration of runoff 5.Managing stormwater as close to its origin as possible. IV. Construction Stormwater Pollution Prevention Plan 1 : Mark Clearing Limits The first step in the"Construction Sequence"is for a surveyor to stake the limits of clearing and to have construction or silt fencing placed along the limits prior to any other construction activity. 2: Establish Construction Access The SWPPP calls for the proposed construction entrance to be installed as the second step after the staking of clearing limits. A detail is provided on the plans. 3: Control Flow Rates Flows during construction will be controlled by applying the appropriate BMPs. The project will retain as much existing vegetation as possible. In addition,the site proposes to install the future detention facility which could be used as a temporary sediment control during construction to manage storm runoff rates.The Detention facility will be cleaned before put in service. 4: Install Sediment Controls This site and SWPPP proposes to construct a construction entrance and retain existing vegetation and install CB inlet protection to collect and contain the sediment on this site.These features are intended to minimize the opportunity for sediment to leave the site via stormwater or on vehicles. The construction of these features is one of the first items required in the"Construction Sequence".Mulch will also be used on the exposed soil as necessary to limit erosion. 5: Stabilize Soils