Technical Bulletin No 5: Design for High Intensity Redevelopment Projects

Downtown Baltimore
Managing the stormwater in highly urban watersheds can be complex and controversial.

The potential for water quality improvements from more stringent stormwater requirements for redevelopment projects is considerable. To achieve these improvements, however, requires creative policy and engineering approaches at the local and state level. The purpose of this Technical Bulletin is to provide stormwater managers with the best available approaches that are proven to work in the challenging setting of highly urban watersheds.

It should be noted that this technical bulletin primarily applies to high intensity redevelopment projects, where existing impervious cover (IC) exceeds 65%. Stormwater practices are much easier and cost-effective to install at
redevelopment projects with less than 65% IC, since they have an abundant surface area where LID practices can be located.

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