Breakdown of points earned for sustainable sites

Total points possible in “sustainable sites” category: 14

Points earned: 9

Prerequisites

Prerequisite 1: Erosion and Sedimentation Control

se1The intent of this prerequisite is to control erosion and reduce negative impacts on water and air quality. Erosion and sedimentation control during construction are prerequisites and therefore do not earn points towards certification. However, without these items certification is not possible at all.

Elements of Rieth Village design that aid in sediment control and erosion reduction:

  • Pervious surfaces on parking lot, sidewalks, and paths, to allow water to percolate into the ground and prevent runoff
  • 2 rain gardens to slow the flow of storm water and prevent runoff
  • A flat surface in the field behind the cistern to slow the flow of water on the way to the wetland in the case of a 100 year storm event
  • Barriers set up to catch displaced soil during construction
  • Washed stones placed around the edge of buildings to prevent splashing and soil displacement
  • Cover crops planted on soil surfaces left uncovered for more than 14 days

Credits Awarded

Credit 4.2: Alternative Transportation, Bicycle Storage and Changing Room (1 point earned)

se2The intent of this credit is to reduce pollution and land development impacts of automobile use.

The Oshtemo building has a bike rack and two showers and changing rooms for residents, commuters and visitors who arrive to Rieth Village on bicycle.

Credit 4.3: Alternative Transportation, Alternative Fuel Vehicles (1 point earned)

The intent of this credit is to reduce pollution and land development impacts of automobile use by providing faculty and staff with access to fuel-efficient vehicles. Merry Lea owns a hybrid vehicle that Rieth Village faculty and staff can use for work purposes.

Credit 5.1: Reduced Site Disturbance, Protect or Restore Open Space (1 point earned)

se3The intent of this credit is to conserve existing natural areas to provide habitat and promote biodiversity. On a previously developed site like Rieth Village (which was used for agriculture) credit is earned by restoring or protecting a minimum of 50% of native or adapted plant species on the development site.

Rieth Village earned this point by restoring native wetland species in the constructed wetland and cleansing biotope. It also restored prairie habitat that was native to northern Indiana before the land was converted to agricultural space.

Credit 5.2: Reduced Site Disturbance, Development Footprint (1 point earned)

se4This credit is earned by conserving existing natural areas and restoring damaged areas to provide habitat and promote biodiversity. Reducing the development footprint refers to the percentage of space the building takes on the development site, or by exceeding the local zoning requirements by 25%.

Rieth Village earned this point by designating an area of open space for conservation near the development site that is equal to the development site’s footprint.

Credit 6.1: Stormwater Management, Rate and Quality (1 point earned)

se5The intent of this credit is to limit disruption of pollution of natural water flows by managing stormwater runoff.

Rieth Village earned this credit by developing a stormwater management plan that resulted in a 25% decrease in stormwater runoff. Engineers at Conservation Design Forum and Todd Ecological worked together to develop a system that can manage a 100 year storm even without any water running off into the adjacent Kesling wetland. The stormwater management plan includes the following features:

  • Gravel parking lot
  • Rain garden at base of parking lot
  • Grass “parking fingers” instead of parking spaces
  • Pervious concrete sidewalks
  • Gravel service road entry
  • Aluminum roofing to harness rainwater
  • A gutter system to collect rainwater
  • A cleansing biotope rain garden to slow stormwater and filter rain water
  • A 15,000 gallon underground cistern for storing rain water
  • Flat and graded landscaping design to slow water flow in case the cleansing biotope and cistern are full
  • Ability to reuse rainwater in toilets and washing machines
  • Use of land to allow rainwater to be collected using gravity and follow the natural contours of the land

Credit 6.2: Stormwater Management, Treatment (1 point earned)

se6The intent of this credit is to limit disruption of natural water flows by eliminating stormwater runoff, increasing on-site infiltration and eliminating contaminants.

Rieth Village earned this point by designing an extensive stormwater collection and filtration system. The main feature of the treatment system is the cleansing biotope. Water from the Rieth Village site is carried by gravity through the land and a gutter system into a basin called a cleansing biotope. This basin is lined with native plant species that use bacteria in their roots to filter out dust, silt, clay and other debris and contaminants. This filtration system eliminates contaminants that make the water appropriate for reuse in the washing machines and toilets of Rieth Village.

Credit 7.1: Heat Island Effect, Non-roof (1 point earned)

se7The intent of this credit is to reduce heat islands (thermal differences between developed and undeveloped areas) to minimize impact on microclimate and human and wildlife habitat.

Rieth Village earned this point by providing natural shade around parking lots and walkways with trees and other vegetation, as well as using pervious materials to construct the parking area and sidewalks. The parking lot and service driveway are made of recycled concrete stones that allow water permeation into the soil beneath, and the sidewalks are built of pervious concrete, which also allows water to seep through, keeping the surfaces cooler than non-pervious materials.

Credit 7.2 Heat Island Effect, Roof (1 point earned)

se8The intent of this credit is to reduce heat islands (thermal differences between developed and undeveloped areas) to minimize impact on microclimate and human and wildlife habitat.

Rieth Village earned this point by using a highly reflective aluminum roofing material on all its buildings. This material reflects sunlight in warmer seasons, reducing the cooling load on the building and reducing the heat island effect at the same time. The roofing material is also recyclable and aids in rainwater collection.

Credit 8: Light Pollution Reduction (1 point earned)

se9The intent of this credit is to eliminate light trespass form the building and site, improve night sky access, and reduce development impact on nocturnal environments.

Rieth Village earned this point in a variety of ways:

  • By shielding luminaries on the side of the building to reduce light escape and direct light onto the building instead of away from it
  • By covering exterior lights so light points downward instead of into the sky
  • An exterior lighting timing system that triggers lights on and off based on amounts of sunlight, not time of day, so it can adjust to seasonal change and avoid wasting electricity