12 November 2009<br />Intent: The Real LEED® Requirements<br />Scott DeGaro, CCCA, LEED AP BD+C<br />LEED Administrator<br...
General Information<br />Credit Intent Review<br />Sustainable Sites<br />Water Efficiency<br />Materials and Resources<br...
General Information<br />
LEED Discipline and Credit Breakdown<br />LEED 2009 New Construction and Major Renovation<br />Footnotes:<br />1 Of 79 cre...
Credit Intent Review<br />
Not all building or project types can achieve all credits<br />Just because credit requirements can’t be met, doesn’t mean...
Sustainable Sites<br /><ul><li>Prerequisite 1 – Construction Activity Pollution Prevention
Credit 5.2 – Site Development, Maximize Open Space
Credit 7.1 – Heat Island Effect, Non-Roof
Water Efficiency
Prerequisite 1/Credit 3 – Water Use Reduction
Credit 2 – Innovative Stormwater Management</li></ul>Materials and Resources<br /><ul><li>Credit 2 - Construction Waste Ma...
Indoor Environmental Quality
Credit 4.1 – Low-Emitting Materials, Adhesives and Sealants
Credit 5 - Indoor Chemical and Pollutant Source Control</li></ul>Prerequisites and Credits<br />
Issue<br />Loss of topsoil reduces ability to support life<br />Sedimentation degrades water bodies<br />Dust can have bot...
To reduce pollution from construction activities by controlling erosion, waterway sedimentation and dust generation</li></...
Intent<br />Promote biodiversity by providing a high ratio of open space to development<br />Requirements<br />Case 1: Loc...
Case 2: No local zoning<br />In a campus setting the open space does not need to be adjacent to the building, but needs to...
Intent<br />To reduce heat islands and minimize impacts on microclimates and habitats<br />Sustainable Sites – Credit 7.1H...
Increased cooling loads due to 2 to 10 degree temperature increase in urban areas
Requirements
Option 1 – Use any combination of the following for 50% of site hardscape
Provide shade from trees within 5 years, structures that are covered by solar panels or structures that have an SRI of at ...
Use hardscape materials with an SRI of at least 29
Use an open-grid pavement system (at least 50% pervious)
Option 2 – Place a minimum of 50% of parking under cover.  Any roof used must have an SRI of at least 29, be a vegetated r...
LEED 2009 requires documentation that existing weathered gray concrete has been cleaned and lightened</li></li></ul><li>Pr...
Issue<br />Reduce demand for water withdrawn from rivers and other water sources<br />Water heating in commercial building...
Increase water efficiency to reduce the burden on municipal water and wastewater systems
Requirements
Employ strategies that in aggregate use less water than the baseline calculated for the building</li></li></ul><li>135,000...
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Intent: The Real LEED Requirements

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A review of the intent of LEED credits and how they are meant to be applied on projects.

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Intent: The Real LEED Requirements

  1. 1. 12 November 2009<br />Intent: The Real LEED® Requirements<br />Scott DeGaro, CCCA, LEED AP BD+C<br />LEED Administrator<br />scott.degaro@bwsc.net<br />www.bargewaggoner.com<br />
  2. 2. General Information<br />Credit Intent Review<br />Sustainable Sites<br />Water Efficiency<br />Materials and Resources<br />Indoor Environmental Quality<br />Summary<br />Further Information<br />Agenda<br />
  3. 3. General Information<br />
  4. 4. LEED Discipline and Credit Breakdown<br />LEED 2009 New Construction and Major Renovation<br />Footnotes:<br />1 Of 79 credits excluding Innovation and Regional Priority Credits<br />2 of 100 points excluding Innovation and Regional Priority Credits<br />
  5. 5. Credit Intent Review<br />
  6. 6. Not all building or project types can achieve all credits<br />Just because credit requirements can’t be met, doesn’t mean that the requirements of the credit shouldn’t be pursued as the “right” thing to do<br />Some credits include alternative compliance paths<br />IEQc4.1: Low-Emitting Materials, Adhesives and Sealants<br />IEQc4.2: Low-Emitting Materials, Paints and Coatings<br />Pay back for sustainable measures needs to be determined on a project by project basis based on the specific design solution<br />USGBC Chicago Chapter Study of 15 LEED buildings shows a 3.8% construction cost increase for LEED certification<br />Shows lower operating costs in &gt;50% of buildings<br />General Comments<br />
  7. 7. Sustainable Sites<br /><ul><li>Prerequisite 1 – Construction Activity Pollution Prevention
  8. 8. Credit 5.2 – Site Development, Maximize Open Space
  9. 9. Credit 7.1 – Heat Island Effect, Non-Roof
  10. 10. Water Efficiency
  11. 11. Prerequisite 1/Credit 3 – Water Use Reduction
  12. 12. Credit 2 – Innovative Stormwater Management</li></ul>Materials and Resources<br /><ul><li>Credit 2 - Construction Waste Management
  13. 13. Indoor Environmental Quality
  14. 14. Credit 4.1 – Low-Emitting Materials, Adhesives and Sealants
  15. 15. Credit 5 - Indoor Chemical and Pollutant Source Control</li></ul>Prerequisites and Credits<br />
  16. 16. Issue<br />Loss of topsoil reduces ability to support life<br />Sedimentation degrades water bodies<br />Dust can have both environmental and health impacts<br />Sustainable Sites - Prerequisite 1 Construction Activity Pollution Prevention<br /><ul><li>Intent
  17. 17. To reduce pollution from construction activities by controlling erosion, waterway sedimentation and dust generation</li></li></ul><li>Requirements<br />Create and implement an erosion and sedimentation control plan for all construction activities conforming to 2003 EPA Construction General Permit or local standards<br />The plan must describe the measures implemented to:<br />Prevent loss of soil due to stormwater runoff and/or wind erosion<br />Prevent sedimentation of storm sewers or receiving streams<br />Prevent pollution of the air with dust and particulate matter<br />Sustainable Sites - Prerequisite 1 Construction Activity Pollution Prevention<br />
  18. 18. Intent<br />Promote biodiversity by providing a high ratio of open space to development<br />Requirements<br />Case 1: Local Zoning and Open Space Requirements<br />Exceed local zoning requirements for vegetated open space by 25%<br />Case 2: No local zoning requirements<br />Provide vegetated open space adjacent to building equal to building footprint<br />Case 3: Zoning but no open space requirements<br />Provide vegetated open space equal to 20% of project area<br />Sustainable Sites – Credit 5.2Site Development, Maximize Open Space<br />
  19. 19. Case 2: No local zoning<br />In a campus setting the open space does not need to be adjacent to the building, but needs to be maintained for the life of the building<br />In urban areas<br />Vegetated roofs can contribute towards this credit<br />Pedestrian oriented hardscape can contribute toward this credit given a minimum of 25% open space is vegetated<br />Sustainable Sites – Credit 5.2Specific Applications<br />
  20. 20. Intent<br />To reduce heat islands and minimize impacts on microclimates and habitats<br />Sustainable Sites – Credit 7.1Heat Island Effect, Non-Roof<br /><ul><li>Issue
  21. 21. Increased cooling loads due to 2 to 10 degree temperature increase in urban areas
  22. 22. Requirements
  23. 23. Option 1 – Use any combination of the following for 50% of site hardscape
  24. 24. Provide shade from trees within 5 years, structures that are covered by solar panels or structures that have an SRI of at least 29
  25. 25. Use hardscape materials with an SRI of at least 29
  26. 26. Use an open-grid pavement system (at least 50% pervious)
  27. 27. Option 2 – Place a minimum of 50% of parking under cover. Any roof used must have an SRI of at least 29, be a vegetated roof or be covered by solar panels</li></li></ul><li>Myth: White concrete is required (SRI = 86)<br />Sustainable Sites – Credit 7.1Common Misconception <br /><ul><li>Truth: New gray concrete has an SRI of 35
  28. 28. LEED 2009 requires documentation that existing weathered gray concrete has been cleaned and lightened</li></li></ul><li>Project with a total hardscape area of 1.20 acres<br />0.50 acre parking lot (asphalt)<br />0.30 acres plaza (25% pervious, concrete paver)<br />0.40 acres sidewalks (concrete)<br />0.10 acres of which have a covered walkway (SRI 20)<br />Sustainable Sites – Credit 7.1Real World Scenario <br />Description Area % Compliant<br />Asphalt Parking Lot 0.50 0%<br />Concrete Paver Plaza 0.30 25%<br />Concrete Sidewalk 0.40 34%<br />Concrete Sidewalk 0.30 26%<br />Covered Walkway 0.10 0%<br />Total 0.50 0%<br />Total 0.80 25%<br />Total 1.20 59%<br />Total 1.20 59%<br />Total 1.20 51%<br />
  29. 29. Issue<br />Reduce demand for water withdrawn from rivers and other water sources<br />Water heating in commercial buildings accounts for nearly 15% of building energy usage<br />Water Efficiency- Prerequisite 1/Credit 3Water Use Reduction<br /><ul><li>Intent
  30. 30. Increase water efficiency to reduce the burden on municipal water and wastewater systems
  31. 31. Requirements
  32. 32. Employ strategies that in aggregate use less water than the baseline calculated for the building</li></li></ul><li>135,000 SF, 140-unit, mixed-use residential building<br />The kitchen sink selected for the residential units was chosen for its low-flow performance, cost, ease of installation and compatibility with the unit design.<br />The sink comes equipped with a flow rate limiter that can be adjusted to reduce the flow rate by 50%<br />The maximum flow rate is 2.5 gpm so, once adjusted, the flow will be reduced to 1.25 gpm<br />Thoughts?<br />Water Efficiency- Prerequisite 1/Credit 3Real World Scenario<br />
  33. 33. The method described to document water-flow restrictors is in general appropriate, however…<br />Kitchen sink faucets are used to fill pots among other things. Expecting tenants to use 1.25 gpm faucet flows to fill pots will cause frustration and lead to tenant attempts to readjust to higher flow rates<br />Earning LEED points should not result in dissatisfaction and frustration which will reflect back on the LEED product<br />It is strongly recommend to keep the kitchen faucets at 2.5 gpm and to use alternate strategies., such as foot pedal operated faucets to reduce water use without causing dissatisfaction<br />Taken from a 2/5/2008 CIR Ruling. In this case, the WE TAG does not feel that this strategy is worthy of an innovation credit for exemplary performance beyond WEc3. <br />Water Efficiency- Prerequisite 1/Credit 3Real World Scenario<br />
  34. 34. Issue<br />Commercial construction generates 2 to 2.5 pounds of waste per square foot of construction<br />Intent<br />Divert C&D from disposal in landfills and incineration facilities<br />Requirements<br />Recycle C&D materials<br />Develop and implement a construction waste management plan (CWMP)<br />Soil and land clearing debris does not contribute to this credit<br />Materials & Resources - Credit 2Construction Waste Management<br />
  35. 35. Soil and land clearing debris does not contribute to this credit<br />Wood or other materials reprocessed for use as processed fuel sources does not constitute incineration and may contribute to this credit<br />Products reprocessed and used on site that would normally be disposed of (i.e. concrete demo as base material) apply to this credit.<br />Also apply to MRc5 – Regional Materials<br />Products used on site without processing (i.e. door hardware) would NOT apply to this credit.<br />Also apply to MRc5 – Regional Materials<br />Materials & Resources - Credit 2Concepts<br />
  36. 36. Issue<br />VOC’s react with sunlight to form smog<br />VOC’s and smog can cause negative effects on health, agriculture and ecosystems<br />Intent<br />Reduce the quantity of indoor air contaminants that are irritating and/or harmful to installers and occupants<br />Requirements<br />Sealants and adhesives installed on-site must comply with SCAQMD Rule #1168 for VOC content<br />Aerosol adhesives installed on-site must comply with Green Seal GS-36 Standard for Commercial Adhesives<br />Materials & Resources - Credit 4.1Low-Emitting Materials, Sealants & Adhesives<br />
  37. 37. Products claim they are VOC compliant<br />VOC compliant typically means compliant with EPA regulations for <br />Products claim they are VOC free<br />“VOC free” products can still have up to 5 g/L of VOCs<br />Low-VOC products don’t work as well and cost more<br />May have been true in the past, but advances in chemistry are providing products just as durable if not more durable than higher VOC products at competitive costs<br />Materials & Resources - Credit 4.1Myths<br />
  38. 38. Also applies to EQc4.2 – Low-Emitting Materials, Paints & Coatings<br />Used when products with a high VOC content must be used on a project<br />Create a baseline and design VOC budget<br />Multiply volume/quantity of materials by threshold or actual VOC content<br />Design VOC budget must be less than baseline budget for compliance<br />Can also be used to show compliance when a product is unintentionally used on a project<br />Materials & Resources - Credit 4.1VOC Budget<br />
  39. 39. Intent<br />Minimize occupant exposure to potentially harmful chemicals and particulates<br />Requirement<br />Employ permanent entryway systems at least 10-feet in length at regularly used entrances<br />Sufficiently exhaust spaces where hazardous chemicals may be present<br />Provide containment of regulatory compliant storage area for appropriate disposal of hazardous liquid wastes<br />In mechanically ventilated buildings, provide Minimum Efficiency Rating Value (MERV) 13 rating or higher filters to all supply air in regularly occupied areas<br />Issue<br />Additional sinks, drains, room separations and exhaust systems can increase project cost<br />Filtration media can have negative impacts on HVAC equipment efficiency (i.e. increased static pressure)<br />Indoor Environmental Quality- Credit 5Indoor Chemical Pollutant and Source Control<br />
  40. 40. Regularly used entrance<br />Frequency of use rather than number of people using the entrance is the key factor<br />Areas of a building that are not intended to normally or regularly house occupants during a typical work day are not required to meet the requirements (i.e. data center)<br />Entryway systems do not need to be continuous<br />Grate and carpet systems<br />Different coarseness of carpet systems<br />Indoor Environmental Quality- Credit 5 Concepts<br />
  41. 41. Warehouse<br />ASHRAE recommends up to MERV-8 filters<br />LEED has no waiver for MERV-13 filter requirements based on building use or ASHRAE recommendation<br />Vehicle Garage or Fire Station with administration space<br />Man doors used as entrances to vehicle areas<br />Overhead doors used as entrances to vehicle areas<br />Indoor Environmental Quality- Credit 5Real-world scenarios<br />
  42. 42. Scenario<br />Air supplied with MERV-14 filtration<br />Recirculated air is not filtered<br />Scenario is not acceptable compliance with credit<br />ALL supply air needs to pass through MERV-13 filtration<br />Any source of contamination would be removed more quickly <br />Indoor Environmental Quality- Credit 5Real-world scenarios – Recirculated Air<br />
  43. 43. Summary<br />
  44. 44. A prerequisite/credit’s intent can tell you:<br />If a credit can/can’t be achieved on a particular project<br />If a credit can be achieved in a different (non-traditional) manner<br />Not all building or project types can achieve all credits<br />Some credits include alternative compliance paths<br />LEED can NOT be left to one person or discipline. It requires an integrated design approach to understand credit intent and credit interactions so that costs are not unnecessarily increased<br />Summary<br />
  45. 45. LEED Reference Guide<br />Intent<br />Requirements<br />Issues<br />Reference Standards<br />USGBC Website<br />LEED Project Tools<br />Credit Interpretation Rulings (CIR’s)<br />Public (prior to June 26, 2009)<br />Further Information<br />
  46. 46. Questions?<br />Scott DeGaro, CCCA, LEED AP BD+C<br />LEED Administrator<br />scott.degaro@bwsc.net<br />www.bargewaggoner.com<br />
  47. 47. Established in 1955<br />Ranked 219 in ENR’s top 500 multidisciplinary firms<br />Engineers, architects, planners, landscape architects, surveyors, geologists, airport planners and economic development specialists<br />Specializing in Aviation, Commercial, Education, Federal, Healthcare, Industrial, Institutional, Judicial, Military, Municipal, Recreational, Retail, Tourism, Transportation and Utilities<br />380 employees in ten offices throughout Ohio, Tennessee and Alabama<br />About Barge Waggoner Sumner & Cannon, Inc. <br />
  48. 48. Copyright Information<br />Barge, Waggoner, Sumner & Cannon, Inc. (BWSC) is not affiliated with USGBC or GBCI, and does not administer the LEED AP program. USGBC and GBCI do not endorse or recommend the products or services offered by BWSC<br />“The Green Building Certification Institute (GBCI) administers credentialing programs that measure and improve the performance of buildings and communities as defined by industry systems such as the LEED® (Leadership in Energy and Environmental Design) Green Building Rating System™.”<br />“LEED Accredited Professional” and the related acronym, and the Legacy LEED AP logo are trademarks owned by the U.S. Green Building Council and are awarded to individuals under license by the Green Building Certification Institute.<br />“LEED Green Associate” and the LEED Green Associate logo are trademarks owned by the U.S. Green Building Council and are awarded to individuals under license by the Green Building Certification Institute.<br />

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