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- Info
New development standards in the Puget Sound basin
| Author: |
Birch, Peter B. |
| Date: |
1995 |
| Periodical: |
In: Enhancing Urban Watershed Management at the Local, County, and State Levels: National Conference on Urban Runoff Management; 1993; Chicago, IL: U.S. Environmental Protection Agency, Office of Research and Development, Center for Environmental Research |
| Abstract: |
The Puget Sound Water Quality Management Plan (PSWQMP) calls for all counties and cities in the Puget Sound drainage basin to adopt ordinances that require stormwater control for new development and redevelopment. Ordinances were to be adopted by July 1, 1994. The PSWQMP also directed the Washington Department of Ecology to prepare technical guidance and a model ordinance to assist local governments in implementing these standards. In response, the Department of Ecology has prepared several sets of minimum requirements that are applied based on the type and size of proposed development. These include: (1) simplified erosion and sediment controls and small parcel erosion and sediment control plan for small developments (under 5,000 ft^2 impervious surface), single-family homes, and land-disturbing activities under 1 acre; (2) a set of 11 minimum requirements for proposed new development of large parcels (5,000 ft^2 Impervious surface and greater) and/or land-disturbing activities over 1 acre. The requirements include erosion and sediment control, and source control and treatment best management practices designed to prevent or minimize impacts to receiving waters. A stormwater site plan is also required for this level of development; (3) the same 11 requirements apply to large parcels with less than 1 acre of land-disturbing activities except that the small parcel erosion and sediment requirements are substituted for the large parcel erosion and sediment controls. If development is proposed, the same minimum requirements apply, subject to a set criteria for applying the minimum requirements to all or part of the site. |
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