DELAWARE PARK CAFO DESIGNS
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Delaware Park is a horse-racing and casino establishment nestled between the banks of the White Clay Creek and Mill Creek in Stanton, Delaware. As the first such establishment in the state directed to obtain a Concentrated Animal Feeding Operation (CAFO) permit under the guidelines of the EPA, Duffield Associates designed a three-prong system for Delaware Park which focuses on stormwater management and flood management through watershed protection including:

1. In addressing point source pollution, Duffield Associates designed wash stations with concrete slabs and drains that tie-in directly to the sanitary sewer system, bypassing the stormwater system.
2. Another feature was carport roofing over manure bins, limiting the potential for nutrient run off, that included special collection procedures for off-site recycling.
3. The third design component improved the site's stormwater system which previously consisted of a series of ditches that emptied into adjacent creeks. This design entailed the construction of four rain gardens serving as collection points for the interconnected ditches, allowing sediment and debris to settle and excess nutrients to be absorbed by the plantings. A fifth location diverted upslope parking lot runoff away from barn and stable areas to a bio retention facility coupled with a dry detention pond to store excess flow during storm events.

Delaware Park also instituted a host of Best Management Practices and "housekeeping" procedures as well as water conservation practices.

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