Low impact development (LID), which aims to mimic the natural environment by thoughtful land planning, and design, fundamentally improve water quality and the future of the world. A director of LID, presented a case study about high impact and low impact outcome. The case focused on its role in a state’s new and more stringent stormwater regulations.
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It is a major problem that waterways are being continuously polluted. Although no state is without stricter stormwater regulations these days as it provides an excellent example of how these regulations impact landowners as well as developers.
But the stormwater regulations, which were created to reduce pollution in the watershed, aim to preserve and restore the land to its natural state of pre-colonial times.
These regulations have wide implications, as the watershed is approximately 60 percent of the Commonwealth. Designers and owners must find innovative ways to manage stormwater, especially on smaller sites.
They also need to use LID features to maximize site utilization. Infiltration practices, rain gardens, and wet swales are just a few examples. Stormwater features can improve the quality of runoff from roads, parking lots, and buildings. This reduces pollutants that eventually discharge into storm drains or waterways.
The site's location and large size made it difficult to comply with new regulations. Geotechnical investigations revealed that the existing site conditions – low slope, high groundwater, clay soils, and low infiltration rates – would make common infiltration practices almost impossible to implement.
Although there are no nutrient banks in the area, the civil team looked into the possibility of buying credits from a nutrient bank. This allows owners to purchase credits towards compliance.