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Eden Prairie, Minnesota 55347

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LEED Credits and Low Impact Development  


LEED Credits

(LEED®) is a rating system developed by the United States Green Building Council (USGBC) to evaluate the environmental performance of a building. The LEED is a voluntary, consensus-based national standard for developing high-performance, sustainable buildings.

     PERCOATM may contribute to  LEED categories including: Sustainable Sites, Water Efficiency, Materials and Resources, and Innovation in Design. 

  Specific credits where PERCOATM can aid the designer include:

LEED Credit SS-C6.1 Stormwater Design - Quantity Control 
LEED Credit SS-C6.2 Stormwater Design – Quantity Control

  The intent of these credits is to limit disruption and pollution of natural water flows by managing stormwater runoff, increasing on-site infiltration and eliminating contaminants. PERCOATM can contribute to this credit by reducing stormwater flow by allowing water to soak through and infiltrate to the ground below. PERCOATM can also reduce the pollutant loads by filtering contaminants as the water is transferred through PERCOATM units. See Ground Water Recharge diagram.

LEED Credit WE C1.1 Water Efficient Landscaping

  The intent of this credit is to limit or eliminate the use of potable water, or other natural surface or subsurface water resources available on or near the project site, for landscape irrigation. To earn this credit, potable water for irrigation must be reduced by 50% when compared to a mid-summer baseline case. The gravel sub-base under PERCOATM can be used to store stormwater for irrigation, helping to satisfy this credit. See 
Stormwater Reclaim diagram.

LEED Credits MR-C4.1 AND MR-C4.2 Recycled Content

  The intent of this credit is to increase the demand for building products that have incorporated recycled content material reducing the impacts resulting from the extraction of new material. PERCOATM products may contain recycled materials in the form supplementary cementious materials (SCM) such as fly ash, slag, or silica fume. The use of SCMs or recycled aggregate in PERCOATM or base material contributes to recycled content needed for this credit.

LEED Credit MR-C5.1 AND MR-C5.2 Regional Materials

  The intent of this credit is to increase demand for building products that are extracted and manufactured locally, thereby reducing the environmental impacts resulting from their transportation and supporting the local economy. The majority of materials in PERCOATM are considered regional materials.

Ashley, Erin: Using Pervious Concrete to acheive LEED Points, NRMCA 2008


Less Pollution

   As stormwater races across parking lots and other pavements it picks up contaminates on its way to the storm drain. PercoaTMproducts help in reducing this flow of stormwater to holding ponds, lakes, rivers and oceans and can filter out many contaminates such as oil.  

  Independent studies have been conducted on the behavior of oil introduced into a pervious concrete. The findings show that the oil is contained within the pervious concrete systems as a coating on the large surface area of the void system as well as 
the location of any geotextile fabric separating the pavement from the subbase or subgrade support. 

    Hydrocarbons, such as oils, are a food source for many naturally occurring bacteria and fungi. Pervious concrete provides the right environment for the microorganisms to feed on the oil and biodegrade it into simpler chemical components that are released into the atmosphere.

Research has determined that 97.6 to over 99 percent of oils introduced into pervious concrete are trapped and biodegraded.

                                                                                                                   Source: PCA, For References


Low Impact Development


What is LID?

"Low Impact Development (LID) is an innovative stormwater management approach with a basic principle that is modeled after nature: manage rainfall at the source using uniformly distributed decentralized micro-scale controls. LID's goal is to mimic a site's predevelopment hydrology by using design techniques that infiltrate, filter, store, evaporate, and detain runoff close to its source. Techniques are based on the premise that stormwater management should not be seen as stormwater disposal. Instead of conveying and managing / treating stormwater in large, costly end-of-pipe facilities located at the bottom of drainage areas, LID addresses stormwater through small, cost-effective landscape features located at the lot level. These landscape features, known as Integrated Management Practices (IMPs), are the building blocks of LID. Almost all components of the urban environment have the potential to serve as an IMP. This includes not only open space, but also rooftops, streetscapes, parking lots, sidewalks, and medians. LID is a versatile approach that can be applied equally well to new development, urban retrofits, and redevelopment / revitalization projects." SOURCE URBAN DESIGN TOOLS


 Percoa and LID





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