// CODE SNIPPET
403.1.1 Increased Runoff
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Stormwater management systems shall address the increase in runoff that would occur resulting from development on the building site and shall either:
- Manage rainfall onsite and size the management system to retain not less than the volume of a single storm which is equal to the 95th-percentile rainfall event and all smaller storms and maintain the predevelopment natural runoff; or
- Maintain or restore the predevelopment stable, natural runoff hydrology of the site throughout the development or redevelopment process. Postconstruction runoff rate, volume, and duration shall not exceed predevelopment rates. The stormwater management system design shall be based, in part, on a hydrologic analysis of the building site.
Related Code Sections
403.1.1 Site Development and Land Use, Increased Runoff
Stormwater management systems shall address the increase in runoff that would occur resulting from development on the building site and shall either ...
Green Construction Code 2012 of Maryland > 4 Site Development and Land Use > 403 Stormwater Management > 403.1 Stormwater Management > 403.1.1 Increased Runoff
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Runoff control shall be by control devices. Control devices shall be protected by strainers ...
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1303.4 Nonpotable Water Systems, First-Flush Diverter
to the roof surface, and shall be discharged in a manner consistent with the storm water runoff requirements of the jurisdiction. First-flush ...
Plumbing Code 2018 of Maryland > 13 Nonpotable Water Systems > 1303 Nonpotable Rainwater Collection and Distribution Systems > 1303.4 First-Flush Diverter
707.11.7.9 Water Resource Conservation, Quality and Efficiency, Draining of Tanks
The discharge from draining the tank shall be disposed of in a manner consistent with the storm water runoff requirements of the jurisdiction ...
Green Construction Code 2012 of Maryland > 7 Water Resource Conservation, Quality and Efficiency > 707 Rainwater Collection and Distribution Systems > 707.11 Rainwater Catchment and Collection Systems > 707.11.7 Storage Tank > 707.11.7.9 Draining of Tanks