High Performance Workshop/Charrette

1
High Performance Workshop/Charrette

• Sustainable Sites
• Session 4a

2
Key Principles

• Select the site carefully
• Understand the site
• Protect and restore the site
• Landscape sustainably
• Design with the site

3
Site Selection

• Developed site or brownfield vs. pristine
  ecologically sensitive areas
• Existing structure
• Transportation access
• New infrastructure

4
Understand the Site

• Landforms
• geology, topography, soils, hydrology
• Vegetation
• Wildlife habitat and corridors
• Climate/microclimate
• temperature, solar, wind, rain, humidity
• History of land use
• Aesthetics and views
• Toxics and hazards

5
Site Protection/Restoration

• Ecologically significant areas
• Building footprint and associated construction
  (roads, parking, etc.)
• Stormwater and erosion controls
• Impacts of construction

6
Stormwater Management

• Sheet flow vs. concentrated flow
• Infiltration
• Grassed swales
• Constructed wetlands
• Sediment traps
• Stormwater reuse
• Less impervious paving

7
Landscape Sustainably

• Indigenous plants and trees to reduce need for
  water, fertilizer, pesticides
• Landscape for energy efficiency
• Integrated pest management instead of chemicals

8
Design with the Site

• Solar orientation
• Avoid cut and fill
• Natural features for natural heating and cooling,
  daylighting, drainage, etc.

9
Site Summary

• The best engineered and designed projects feel
  natural, comfortable, and appropriate to the
  area. They are maintainable, sustainable, and
  cost effective.

10
LEEDTM Sustainable Sites

• Total Available Credits 14
• (P) Erosion and Sediment Control
• Site Selection
• Avoid inappropriate sites (1 of 5 criteria) (1)
• Urban Redevelopment
• Increase localized density (1)
• Brownfield Redevelopment
• Develop brown field site/remediation
• according to EPA (1)

11
LEEDTM Sustainable Sites

• Alternative Transportation
• Locate within ½ mile of rail or subway or ¼ mile
  of 2 buses (1)
• Provide bike racks/changing/shower 5 bldg.
  Occupants (1)
• Alternative fuel refueling stations for 3 of
  parking (1)
• Size parking to minimum zoning and provide 5
  preferred parking for carpools or no new parking
  and provide 5 preferred parking for carpools (1)

12
LEEDTM Sustainable Sites

• Reduced Site Disturbance
• Limit greenfields disturbance to 40 ft beyond
  bldg. Perimeter, 5 ft beyond roadway/
  walkway/main utility branch, 25 ft beyond
  pervious paving areas or restore 50 open area on
  developed sites (1)
• Reduce footprint 25 of open space requirements
  (1)

13
LEEDTM Sustainable Sites

• Stormwater Management
• No increase in existing to developed or 25
  decrease if existing imperviousness is greater
  than 50 (1)
• Treatment system to remove 80 TSS, 40 TP by
  Best Management practice per EPA 840-B-92-002
  V93 (1)

14
LEEDTM Sustainable Sites

• Landscape and Exterior
• Provide 30 shade or 30 high albedo materials
  or 50 underground parking or 50 open grid
  paving (1)
• 75 roof is Energy Star compliant or 50
  vegetated roof (1)
• Light Pollution Reduction
• Do not exceed IESNA footcandle levels zero
  illumination to leave site (1)