Changes

== Site Conditions ==

== Site Conditions ==

Complete definition of pre-development site conditions is essential prior to screening of potential stormwater BMPs. The designer should prepare maps describing site conditions and identifying all environmental features and functions that need consideration in accordance with provincial, municipal and conservation authority development regulations. This includes watercourses and small drainage features, floodplains, important recharge areas, steep slopes, wetlands, natural heritage conservation areas and significant wildlife habitats. In addition, information regarding native soil types, infiltration capacity and depth to water table must be determined.

Complete definition of pre-development site conditions is essential prior to screening of potential stormwater BMPs. The designer should prepare maps describing site conditions and identifying all environmental features and functions that need consideration in accordance with provincial, municipal and conservation authority development regulations. This includes watercourses and small drainage features, floodplains, important recharge areas, steep slopes, wetlands, natural heritage conservation areas and significant wildlife habitats. In addition, information regarding native soil types, infiltration capacity and depth-to-water-table must be determined.

In retrofit scenarios, site conditions will vary and maps can be explicit with land use type. Road right of ways, parks, residential, industrial, commercial and/or institutional should be noted.

In retrofit scenarios, site conditions will vary and maps can be explicit with land use type. Road right of ways, parks, residential, industrial, commercial and/or institutional should be noted.

===Site constraints===

===Site constraints===

A number of factors need to be considered when screening the suitability of a given location within a development site for application of stormwater BMPs. [[LID site criteria and constraints]] summarizes site constraints associated with some general types of structural LID practices for stormwater management that should be considered. Further information regarding constraints to the design of various end-of-pipe BMPs can be found in the Ontario Ministry of the Environment Stormwater Management Planning and Design Manual (2003). The use of LID BMPs should be considered first to meet the design criteria before the use of end-of-pipe BMPs.  

When attempting to apply stormwater BMPs within a development site, give careful consideration to site conditions and constraints. Here is a [[LID site criteria and constraints|handy table]] outlining the factors constraining use of each LID BMP.

Further information regarding constraints to the design of various end-of-pipe BMPs can be found in the Ontario Ministry of the Environment Stormwater Management Planning and Design Manual (2003). Before resorting to end-of-pipe BMPs, evaluate whether LID BMPs can meet the design criteria.

===LID opportunities and land use types===

===LID opportunities and land use types===

If working in a retrofit scenarios, each particular land use type has a different set of constraints on LID options. Road ROWs, residential, industrial, commercial, institutional, and park lands all have unique site constraints and corresponding LID opportunities. To help understand these unique land type constraint and potential LID options, see

When working in retrofit scenarios, note that each particular land-use type has a different set of constraints on LID options. Road ROWs, residential, industrial, commercial, institutional, and park lands all provide unique opportunities and challenges:

*[[LID opportunities and road types]]

*[[LID opportunities and road types]]