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LEED 2009 update, example webinar presentation

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    Whats New Leed 2009 Lorman Ppt Whats New Leed 2009 Lorman Ppt Presentation Transcript

    • What’s New for LEED® in 2009: The Overhaul of the U.S. Green Building Council LEED® Program Bion D. Howard, Consultant Building Environmental Science & Technology (B.E.S.T.) Web: http://www.energybuilder.com/ © 2008. Lorman Educational Services 1
    • Teleconference Goals • Understand how the U.S. Green Building Council is revising and updating the LEED® rating and certification system for 2009. • Review key provisions receiving attention: Sustainable Sites, Water Efficiency, Energy and Atmosphere, Materials, and IEQ. • Discuss the new approach developed to consider regional environmental conditions. • Review unified distribution of LEED® credit points approach. 2
    • Teleconference Disclaimer • This teleconference is based on detailed research on the current and proposed criteria of the U.S. Green Building Council’s “Leadership in Energy and Environmental Design” - LEED® - program and rating systems. It has been developed, and is presented, by a recognized green building professional, but has not been reviewed, approved or sanctioned in any way by the USGBC. • All materials referring to LEED® 2009 should be considered “pre-release” since at the time of preparation, the final documents had not been released by USGBC. 3
    • Sustainable Development Principles "Sustainable development… meeting needs of the present without compromising the ability of future generations to meet their own needs." Source: Our Common Future. 1987. World Commission on Environment and Development (WCED). Oxford, UK. Oxford University Press. 4
    • Sustainable Development Principles (cont.) • Improved quality of life • Understand consequences • Stabilized use of our of inaction environment’s natural • Innovative changes needed to resource supply institutional structures • Revise policies and • Education used to influence practices at all levels individual citizen behaviors. Source: Our Common Future. 1987. World Commission on Environment and Development (WCED). Oxford, UK. Oxford University Press. 5
    • Buildings’ Environmental Impacts U.S. buildings account for: • 70% of electricity consumption • 39% of total energy use • 39% of greenhouse gas emissions • 40% of raw materials use • 30% of waste output (136 to 150 million tons/yr) • 12% of potable water consumption Source: The U.S. Green Building Council, 2008 6
    • Buildings Energy Usage 7
    • What is Green Building? Green buildings are structures that more efficiently use valuable resources such as energy, water, materials, and land compared to buildings constructed to basic building codes. Green buildings are better for the environment, and provide healthy, comfortable, productive indoor spaces. Source: US Green Building Council, Washington, DC USA 8
    • What is Green Building? (cont.) Top level desired outcomes (Source: USGBC) • develop new and remodeled existing structures that provide stable, sustainable energy supplies and climate conditions; • sufficient clean, and renewable water resources; • restorative use of land for the long term habitat sustainability; • restorative use of materials and assemblies that reflect life-cycle impacts; and • a built environment that enhances human safety, security, health and productivity. 9
    • Green Design Intersections Composite by B.E.S.T. 10
    • Role of green building in meeting sustainable design criteria • Site planning… ecological design decreases planning runoff, erosion, sedimentation, top-soil loss; long term benefits • “Embodied” energy and pollution impacts from building materials are reduced by considering life-cycle benefits and costs, incl. externalities • Energy waste in green buildings is often reduced by >30%; with 50% overall energy efficiency improvement a new USGBC goal 11
    • Role of green building in meeting sustainable design criteria (cont.) • Potable water efficiency enhanced inside and out; efficient delivery, irrigation alternatives, and catching rainwater • Resources respected through source reduction, reuse where possible, using higher portions of renewable-based recycled goods, and implementing comprehensive recycling programs 12
    • Productivity Benefits to Business and Institutions Big bottom line impact ! • Green design can cut national productivity losses by est. $30 - $170 billion/year through better IEQ (LBNL 1998) Absenteeism and turnover reduced • Healthy workplaces = more satisfied employees (RMI, ING Bank) Improved occupant performance • Student performance boosted in day-lighted schools (Innovative Design, NC) Retail sales increase with daylighting store spaces • Studies have shown ~40% improvement (Hershong/Mahone 1999, Innovative Design, Inc. 1994-1998) 13
    • Green Building Market is Expanding • “U.S. green building market is accelerating at a dramatic rate.” • “The value of green building construction starts was up five-fold from 2005 ($10 billion) to 2008 ($36-$49 billion), and could triple by 2013, reaching $96-$140 billion.” Source: McGraw-Hill Construction's Green Outlook 2009 14
    • Green Building Market • Since 2005, the perceived benefits of green building have increased and differentiated as people become more knowledgeable about green building. • The decrease in operating costs is the most often cited benefit (13.6%, up from 8-9% in 2005), followed by the increase in building values (10.9%, up from 7.5% in 2005). Source: McGraw-Hill Construction's Green Outlook 2009 15
    • Does Green Building Cost Much More? 2004 study of cost implications of pursuing each LEED point, found "no statistically significant difference between the LEED population and the non-LEED (building) population." • Compared 45 LEED buildings with 93 conventional buildings. • Report offered clear evidence; if there is any premium associated with building green, it is far less significant than a range of other factors that affect building cost. Source: "Costing Green: A Comprehensive Cost Database and Budgeting Methodology," 2004. By Lisa Fay Matthiessen and Peter Morris of Davis Langdon Adamson (DLA) 16
    • New Green Building Cost/Benefit Study 2008 “Greener Buildings and Communities: Costs and Benefits.” By: GoodEnergies.com / Greg Katz Financial and technical analysis of 150 green building projects in U.S. and 10 other countries. Report highlights -- BENEFITS -- • Hard Value – c. 50% of buildings saw initial green premium paid-back by energy and water savings in < 5 years. • Energy savings alone make green buildings cost effective. 20 year present value of energy savings ranged from $7 per square foot to $14/sf (office buildings) • The benefits look even better when water savings and health and productivity benefits included. • Total health and transportation related savings: $5-$30/sf – Annual transportation savings / household: $600-$700/ HH or $4000 w/ one less car – Annual health savings: $100-$200/person 17
    • New Green Building Cost/Benefit Study 2008 (cont.) “Greener Buildings and Communities: Costs and Benefits.” By: GoodEnergies.com / Greg Katz Report highlights – COSTS -- • Most green buildings cost 0% to 4% more than business-as-usual buildings. – Median “green premium” = 1.6% increase; Mean = 2.5%. – The average additional cost = between $3/sf and $8/sf. • Way lower than “public perception.” E.G: World Business Council for Sustainable Development survey of business leaders “believe” GB’s cost average 17% more (opinion is a clear outlier). 18
    • New Green Building Cost/Benefit Study 2008 (cont.) “Greener Buildings and Communities: Costs and Benefits.” By: GoodEnergies.com / Greg Katz Report highlights – MARKET FACTORS -- • Green buildings increase market value through higher sales/rental rates, increased occupancy and lower turnover compared with conventional buildings. • Green commercial properties sell for a 3%-5% premium, and • In markets where didn’t find a premium, higher occupancy, faster leasing, and quicker resale factors were observed. 19
    • Overview: U.S. Green Building Council Mission: “to promote the design and construction of buildings that are environmentally responsible, profitable, and healthy places to live and work.” Org. structure designed around firms dedicated to improving energy and environmental performance of the built environment Formed: c. 1993. Green Pioneers David Gotfried, Mike Italiano 20
    • Principles of LEED® (Leadership in Energy & Environmental Design) A consensus rating system based on accepted energy and environmental principles, that strives to strike a balance between proven practices and emerging concepts. LEED® encourages a holistic approach that guides an integrated and collaborative design, construction, and O&M process throughout the building's life cycle. Source: The U.S. Green Building Council, 2006 21
    • Why LEED® was created What is it, and why does it matter? • No consensus existed pre ~1997 effectively defining and characterizing what an environmental building really was until US GBC created LEED®. • Building consumers needed consistent information to help avoid growing misrepresentation or “green-wash.” • Industry needed consistent guidelines to help foster a “value-proposition” for environmental products and services. • Financing green building construction required more accurate cost / benefit analysis based on proper information concerning criteria (what really is green). 22
    • LEED® Products Matrix Source: USGBC web site 9/2008 23
    • Building Types Covered By LEED® • LEED-NC: New Construction and Major Renovations/Additions commercial and institutional buildings (2000, updated 2005; 2009) • LEED-EB: Existing Buildings (2004, O&M 2008; 2009) • LEED-CI: Commercial Interiors (public release: 2004, 2009) • LEED-CS: Core and Shell (public release: 2005; 2009) • LEED for Schools: Application Guide (R.O. 2008, 2009) • LEED-ND: Neighborhood Development Guide (R.O. late ’08) • LEED Retail: Guide for retail facilities pilot test (2009 release) • LEED-HC: Guide for Health Care Facilities (in development) • LEED-Homes: Residential (R.O. 11-2007) Status as of Nov. 2008; Source: USGBC 24
    • LEED® Registered Projects By Type OTHER 3% MULTI USE 32% MULTI-UNIT RESIDENTIAL 3% COMMERCIAL OFFICE LIBRARY 14% 3% K-12 HIGHER EDUCATION EDUCATION 6% 7% Source: US Green Building Council, 8/2006 25
    • Who is Using LEED®? • ~ 11,000 Registered Projects • ~ 1,600 Certified buildings • ~ 1,200 LEED® for Homes certified projects • > 50,000 LEED®-accredited Professionals • ~ 17,500 USGBC members • ~ 7,300 USGBC affiliated organizations • ~ 80+ Chapters and international spin-offs • ~ 80+ Governmental agency LEED® adoptions Sources: The U.S. Green Building Council; BuildingGreen.com; RealLEED.com, 11/2008 26
    • LEED® Certification Three step process: • Step 1: Project Registration LEED® Letter Templates, CIR access, and on-line project listing • Step 2: Technical Support Reference Package Credit Inquiries and Rulings (CIR) • Step 3: Building Certification Upon documentation submittal and USGBC review 27
    • Introduction: LEED® 2009 Products LEED® 2009 Obtain PDF copy of guide & rating system here: http://www.usgbc.org/ShowFile.aspx?DocumentID=3617 28
    • Overview: LEED® Credit Points Example LEED® Points levels Level NC 2.2 EB O&M Certified 26 - 32 points 34 - 42 points Silver 33 - 38 points 43 - 50 points Gold 39 - 51 points 51 - 67 points Platinum 52 + points 68 - 92 points (69 possible) (92 Possible) 2005 – ’08 9/2008 29
    • LEED® Credit Points (cont.) New LEED® Points levels Level 2009 Certified > 40 points Silver > 50 points Gold > 60 points Platinum > 80 points Total base points 100 “Bonus” 10 Innovation & Regionalization Points …………………………….. 110 Possible 30
    • Overview: LEED® 2009 Structure SS LEED 2009 Criteria WE E&A 6 4 26 MR 15 EQ I&D 10 Regional 35 14 Max = 110 Source: USGBC final ballot LEED 2009 Revisions 31
    • LEED® 2009 Approach Review of the final ballot proposed prerequisites and credits within LEED® 2009 rating system Photo source: Tandus NeoCon Team 32
    • LEED® 2009 Approach Principal Goals of USGBC 2009 Revisions to LEED® • Harmonize rating systems • Align credits from various scales to 0 to 100 scale plus, Regional and Innovation & Design Process • Adjunct section introduces regionalized innovation points; special criteria to be developed locally • Increased focus on electronic submittals and evaluation – “Bookshelf” concept – increase electronic submittals – Credit alignments (address credit drift from one product to another EX- Homes, Neighborhood Development) – Reference Guide, and electronic updates 33
    • LEED® 2009 Approach Implementation of USGBC Revisions to LEED® (cont.) Weightings Weightings principle – effort to emphasize positive effects of scientifically verifiable green building benefits. • Reduce carbon footprint • Less water waste • Human health benefits • Known environmental benefits 34
    • LEED® 2009 Approach Implementation of USGBC Revisions to LEED® (cont.) Weightings LEED® 2009 weighting approach -- six interacting factors allow decisions about relative points allocation • The prototype building (typ. office building) • Impact categories • Credit groups • Transportation • Credit adjustments • Point reallocation 35
    • LEED® 2009 Approach Implementation of USGBC Revisions to LEED® (cont.) Weightings (cont.) Top Down Hierarchy based on evaluations EPA TRACI, & NIST/BEES Climate Change Habitat Alteration Resources Depletion Human Health – “Non- Human Health “Criteria” cancerous” Smog Formation Water “Intake” Acidification (impact on Human Health – “Cancerous?” lakes) Eco-toxicity Indoor Air Quality Eutrophication Ozone Depletion 36
    • LEED® 2009 Approach Implementation of USGBC Revisions to LEED (cont.) Weightings (cont.) TRACI – Operating Structure (example case) 37
    • LEED® 2009 Approach Administrative Reconfiguration • The USGBC is creating a “bookshelf” of credits that apply to diverse LEED® rating standards. • Early in 2008, USGBC moved administration of the LEED® certification process to Green Building Certification Institute (GBCI), a separate nonprofit organization established 2007 with USGBC support. • GBCI will deliver an ISO-compliant certification process able to grow with the green building movement. • USGBC has predicted an overall ability to meet the activities of up to a million users of its system in coming years (Scott Horst quoted at GreenBuild 2008). 38
    • LEED® 2009 Approach Administrative Reconfiguration The certification process for LEED® accredited professionals is changing too: Source: USGBC.org / GreenBuild 2008 39
    • LEED® 2009 Approach Credits: Sustainable Sites ( 26 Points available) Source: USGBC.org 40
    • LEED® 2009 Approach Strategies: Sustainable Sites Photo: B. D. Howard Prerequisite 1 – Construction Activity Pollution Prevention Rationale: Prevent pollution; reducing runoff, conserve natural vegetation, consider natural energy sources during site selection, development processes. Create Erosion and Sedimentation plan, at least complying with US EPA Construction General Permit, or local standards where they are more stringent. 41
    • LEED® 2009 Approach Strategies: Sustainable Sites • Credit 1: Site Selection ( 1 Point) • Credit 2: Development Density & Community Connectivity (Revised 5 Points, was 1 pt.) • Credit 3: Brownfield Redevelopment ( 1 Point) 42
    • LEED® 2009 Approach Strategies: Sustainable Sites (cont.) Credit 2 (5 Pts.) – Development Density & Community Connectivity (increased points) Intent -- Channel development (re-development) to urban areas with existing infrastructure to reduce impacts upon “greenfields” (undeveloped areas) and preserve habitat and natural resources • Option 1 – Certify building meets required development density, and show calculations 60,000 SF / Acre; surrounding buildings are at least 2 stories height; signed statement 43
    • LEED® 2009 Approach Strategies: Sustainable Sites (cont.) Credit 2 (5 Pts.) • Option 2 – Community Connectivity; submit proximity information concerning basic services nearby; in ½ mile radius, 10 services types Source: Paladino Consulting LLC; USGBC LEED NC 2.2 Ref. Guide 44
    • LEED® 2009 Approach Strategies: Sustainable Sites SustainableSites.org • Credit 4: Alternative Transportation (Revised 12 Points; was 5 points) • Credit 5: Site Development (up to 2 Points) • Credit 6: Stormwater Design (up to 2 Points) • Credit 7: Heat Island Effects (up to 2 Points) • Credit 8: Light Pollution Reduction (1 Point) 45
    • LEED® 2009 Approach Strategies: Sustainable Sites (cont.) Credits 4.1 to 4.4 – Alternative Transportation • Using these credits a LEED project can significantly reduce the environmental impact of SOV (single occupant vehicle) auto usage. • Submit certifications of connectivity attainment • Three options: A) location w/in ½ mile rail B) location w/in ¼ mile bus line C) connecting shuttle to A, or B type 46
    • LEED® 2009 Approach Strategies: Sustainable Sites (cont.) Credits 4.1 to 4.4 – Alternative Trans. (cont.) • Provide bicycle storage and changing rooms • Support infrastructure for alternative fuel vehicles • Support for car-pooling, (5% of occupants) and • Plan for telecommuters where they can reduce their commuting frequency by ~ 20% 47
    • LEED® 2009 Approach Strategies: Sustainable Sites (cont.) Credits 5.1, 5.2 – Protect, restore; Maximize open space • Plan to protect / restore existing natural areas at the site, • Maximize open space to provide habitat and promote biodiversity at/near the green building • Steps (one point each): – 5.1 Coverage of an area minimum 50% of the site area excluding the building footprint itself – 5.2 Coverage of an area minimum 75% of the site area excluding the building footprint itself • Alternative off-site areas may be applicable at a ratio of no less than a 2 to 1 offset; under long term contract. 48
    • LEED® 2009 Approach Strategies: Sustainable Sites (cont.) Credits 6.1, 6.2 – Stormwater Mangement • Limit the disruption and pollution of natural water flows by managing stormwater runoff. • Steps (one point each): – 6.1 Measures to mitigate at least 25% of the annual stormwater from the building site – 6.2 Measures to mitigate at least 50% of the annual stormwater from the building site • Provide for submittals describing the plan and its execution, and how the plan will be recertified. 49
    • LEED® 2009 Approach Strategies: Sustainable Sites (cont.) Credits 7.1, 7.2 – Heat Island Reduction • Reduce thermal gradient differences between developed and undeveloped areas – heat islands – to minimize environmental impact • 7.1 Non-roof areas: provide shade for at least 30% of non-pervious surfaces on site (four options available) • 7.2 Roof areas: (A) put in place a roof system meeting the requirements of the Energy Star “cool roofs” program tested in accordance with ASTM standards, with emissivity of at least 0.9 over 75% of roof surface. (B) install and maintain a living “green” roof system over 50% of roof surface area • Combinations may be considered with proper documentation 50
    • LEED® 2009 Approach Strategies: Sustainable Sites (cont.) Credit 8 – Light Pollution Reduction • Eliminate light “trespassing” into the night sky, and reduce impact on nocturnal environment. • Option A: shield outdoor light fixtures of 50 W or more or provide calculations that less than 5% of light reaches the night sky • Option B: alternative calculations considering relationship between fixture mounting height and property line (details in Reference Guide) 51
    • LEED® 2009 Approach Credits: Water Efficiency (Revised, 12 Points available, increased from 10 points) Source: USGBC.org 52
    • LEED® 2009 Approach Strategies: Water Efficiency Prerequisite 1 – Minimum water efficiency Revised – Boost by at least 20% the efficiency of water using fixtures, installing water conserving features. (Previously complied by meeting NAECA) Calculate reductions compared to a 120% baseline water. Provide for recertification of water efficiency plan 53
    • LEED® 2009 Approach Strategies: Water Efficiency (cont.) Credits 1.1 & 1.2 – WE Landscaping • Limit or eliminate use of potable water for landscape irrigation demands • Credit 1.1 – 50% reduction of potable water usage • Credit 1.2 – No potable water usage (was 95% reduction) • Submittals – Provide certification narrative of the system effectiveness, specific reductions in potable water use • Recertification – documentation and water-meter readings 54
    • LEED® 2009 Approach Strategies: Water Efficiency (cont.) Credit 2 – Innovative Wastewater Technologies Reduce generation of wastewater and potable water demand while increasing local aquifer recharge • Option A – reduce potable water throughput to sewerage by documented 50% based on Prereq. 1 calculations • Option B – Treat 100% of wastewater outfall to tertiary standards. Standards: < 10 mg/L BOD5 and 10 mg/L TSS (total suspended solids) • Key reference: USEPA “Onsite Wastewater Treatment Systems” manual, EPA-625-R-00-002; 2002 * BOD: biological oxygen demand 55
    • LEED® 2009 Approach Strategies: Water Efficiency (cont.) Credits 3.1 & 3.2 – Water Use Reduction Maximize fixture’ potable water efficiency • Credit 3.1 – reduce by at least 30% fixture water usage compared to calculated baseline levels (was 20%) • Credit 3.2 – reduce by at least 40% fixture water usage compared to calculated baseline levels (was 30%) • Submittals – provided calculations and water meter data to support the credits claimed; recertify annual water use 56
    • LEED® 2009 Approach Credits: Energy and Atmosphere (35 Pts avail.) 57 Source: USGBC.org
    • LEED® 2009 Approach Strategies: Energy and Atmosphere Objectives: Enhance efficiency, lower operating costs, reduced Carbon emissions • Integrated design approach • LEED® energy-efficiency criteria • Existing building “thermal envelope” • HVAC equipment and distribution systems • What about “climate specific” passive design? • Commissioning building and systems 58
    • LEED® 2009 Approach Strategies: Energy and Atmosphere Source: tomkonrad.com/blog 59
    • LEED® 2009 Approach Strategies: Energy and Atmosphere Prerequisite 1 – Fundamental building commissioning Verify and ensure building energy systems perform as intended…two levels of certification: initial certs with a 5 year plan, and re- certification documentation Prerequisite 2 – Minimum energy performance (Revised) A. Must demonstrate at least 10% superior performance compared to ASHRAE Standard 90.1-2007; special case in California Title24. B. Must show at least 5% improvement in Existing Building Prerequisite 3 – Fundamental Refrigerant Management Either show zero ozone depletion potential from operation of equipment, or submit a third party verification that replacements to comply are not economically feasible in the project. 60
    • LEED® 2009 Approach Strategies: Energy and Atmosphere Credit 1 – Optimize Energy Performance • Conduct necessary computer modeling using ASHRAE approved methods and guides to show increased energy efficiency will be attained. Credits accrue as follows: Note: EA Credit 1 in LEED NC 2.2 permitted up to 10 points 61
    • LEED® 2009 Approach Strategies: Energy and Atmosphere Credit 2 – On-site Renewable Energy (revised 7 points) Encourage and recognize increasing levels of on-site and off-site renewable energy to reduce environmental impacts associated with fossil fuel energy use. • Install approved renewable energy systems, as specified in the rating system that supply electric power, or metered thermal energy sources. Credits as follows: Note: EA Credit 2 in LEED NC 2.2 permitted up to 3 points 62
    • LEED® 2009 Approach Strategies: Energy and Atmosphere Credit 3:– Enhanced Building Commissioning (Revised 2 points, was 1 pt.) • Commissioning Process – designate commissioning authority prior to construction • Develop total understanding of the operation of the building’s major energy-using systems, options for optimizing energy performance and a plan to achieve energy savings • Implement commissioning plan for building’s major energy-using systems as specified in Reference Guide. • Note – new industry standards referenced for this credit expected. 63
    • LEED® 2009 Approach Strategies: Energy and Atmosphere Credit 4: Enhanced Refrigerant Management • Reduce ozone depletion and support early compliance with the Montreal Protocol while minimizing direct contributions to global warming. • Option A (1 point) Do not use refrigerants in base building HVAC&R systems. • Option B (1 point) Select refrigerants and HVAC&R equipment that minimize or eliminate the emission of compounds that contribute to ozone depletion and global warming (calculations are made using required formula) 64
    • LEED® 2009 Approach Strategies: Energy and Atmosphere Credit 5 –Measurement and Verification (Revised 3 points, was 1 point) • Provides information to support the ongoing accountability and optimization of building energy performance; identify opportunities for additional energy-saving investments. • Utilize computer-based building automation system (BAS) that monitors and controls key building systems 65
    • LEED® 2009 Approach Strategies: Energy and Atmosphere Credit 6: Green Power (Revised 2 points, was 1 point) (Not to be confused with on-site renewable energy supply credits) • Determine baseline electricity use (or use results calculated in assessment for Credit 1) • Provide at least 35% of building’s electric requirement from renewable sources; • Must meet definition of Center for Resource Solutions “GREEN-E” cert. requirements 66
    • LEED® 2009 Approach Credits: Materials and Resources ( 14 Pts avail.) Source: USGBC.org 67
    • LEED® 2009 Approach Strategies: Materials and Resources Prerequisite 1 – Collection and Storage of Recyclables This pre-req. remains unchanged in LEED® 2009 Provide accessible dedicated area serving the entire project, for collection and storage of recyclable material. 68
    • LEED® 2009 Approach Strategies: Materials and Resources Rationale: minimize wastes; use environmentally preferable materials; employ renewable, recycled and recyclable materials wherever possible. CREDIT 1 (Revised to 4 points, was 3 Points) © Corbis Images • Credit 1.1: Building Reuse: Maintain 75%, Existing Walls, Floors & Roof • Credit 1.2: Maintain 95% of Existing Walls, Floors & Roof • Credit 1.3: Maintain 50% of Interior Non-Structural Elements CREDIT 2 (up to 2 Points) • Credit 2.1: Construction Waste Management: Divert 50% From Disposal • Credit 2.2: Construction Waste Management: Divert 75% From Disposal 69
    • LEED® 2009 Approach Strategies: Materials and Resources CREDIT 3 (up to 2 Points) • Credit 3.1: Materials Reuse: 5% • Credit 3.2: Materials Reuse: 10% CREDIT 4 (up to 2 Points) • Credit 4.1: Recycled Content: 10% (post-consumer + 1/2 pre- consumer) • Credit 4.2: 20% (post-consumer + 1/2 pre-consumer) CREDIT 5 (up to 2 Points) • Credit 5.1: Materials: 10% Regionally Extracted, Processed & Manufactured • Credit 5.2: 20% Regionally Extracted, Processed & Manufactured • Credit 6: Rapidly Renewable Materials (1 Point) • Credit 7: Certified Wood (1 Point) 70
    • LEED® 2009 Approach Credits: Indoor Environmental Quality (Revised to 15 Points, was 19 Point section) 71 Source: USGBC.org
    • LEED® 2009 Approach Indoor Environmental Quality remains a vital concern in all buildings. 72
    • LEED® 2009 Approach Strategies: Indoor Environmental Quality Prerequisite 1 – Minimum IAQ Performance Meet ASHRAE Standard 62.1–2007 Ventilation Rate met under all normal building operating conditions. Natural ventilated buildings will meet requirements in appropriate section of ASHRAE Standard 62.1–2007 Prerequisite 2 – Environmental Tobacco Smoke (ETS) Control Option A: Prohibit smoking in building and designate exterior smoking areas at least 25 feet from building entries, outdoor air intakes and operable windows. Option B: If A is infeasible then use designated smoking rooms and establish negative pressure in rooms with smoking; 25’ away from entrances 73
    • LEED® 2009 Approach Strategies: Indoor Environmental Quality Credit 1: Outdoor Air Delivery Monitoring (1 Pt.) • Install permanent, continuous monitoring systems that provide feedback on ventilation system performance to ensure that ventilation systems maintain minimum outdoor rates under all operating conditions. • For mechanical ventilation systems that predominantly serve densely occupied spaces: have a CO2 sensor or sampling location for each densely occupied space and compare it with outdoor ambient CO2 concentrations • Data can be integrated with EMCS in many cases. IAQ Best Management Practices 74
    • LEED® 2009 Approach Strategies: Indoor Environmental Quality Credit 2: Increased Ventilation (1 point) • For mechanically ventilated spaces: Increase outdoor air ventilation rates for all air-handling units serving occupied spaces by at least 30% above min. ASHRAE 62.1–2007. • Naturally ventilated spaces: follow manual -- “Good Practice Guide 237: Natural Ventilation in Non-domestic Buildings”(1998). Alt: CIBSE Applications Manual 10: 2005, “Natural Ventilation in Non-domestic Buildings.” CIBSE: Chartered Institution of Building Services Engineers IAQ Best Management Practices 75
    • LEED® 2009 Approach Strategies: Indoor Environmental Quality Credit 3 – Construction IAQ Management Plan (up to 2 Points) • Credit 3.1: During Construction SMACNA IAQ Control guidelines (1995 reference) Protect materials stored on site from contamination Protect air-handlers and grilles from contamination with filters • Credit 3.2: Before Occupancy – OPTION 1 – Flush out the building with fresh air operating in a required temperature and humidity band – OPTION 2 – Conduct air quality testing after construction ends but prior to building occupancy using methods consistent with US EPA guidelines. IAQ Best Management Practices 76
    • LEED® 2009 Approach Strategies: Indoor Environmental Quality Credit 4 – Low-emitting Materials (up to 4 Points) • Credit 4.1: Low-Emitting Materials: Adhesives & Sealants • Credit 4.2: Low-Emitting Materials: Paints & Coatings • Credit 4.3: … Carpet Systems • Credit 4.4: … Composite Wood & Agrifiber Products Credit 5: Indoor Chemical & Pollutant Source Control (1 Point) IAQ Best Management Practices 77
    • LEED® 2009 Approach Strategies: Indoor Environmental Quality Credit 6.1: Controllability of Lighting (1 Point) Credit 6.2: Controllability of Thermal Comfort (1 Point) These are high-value options, which has been shown to increase occupant productivity and comfort levels. • Provide high levels of lighting and thermal comfort control for individual occupants or specific groups in multi-occupant spaces (e.g., classrooms or conference areas) to promote the productivity, comfort, and well-being of building occupants • Use controls that enable adjustments to suit the task needs and preferences of individuals for at least 50% of individual workstations, AND for groups sharing a multi-occupant space or working area for at least 50% of multi-occupant space in the building. IAQ – Occupant Comfort 78
    • LEED® 2009 Approach Strategies: Indoor Environmental Quality Credit 7 Thermal Comfort: (up to 2 Points) • 7.1: Thermal Comfort: Design • 7.2: Thermal Comfort: Verification Install a permanent monitoring system to ensure ongoing building performance to the desired comfort criteria as determined by ASHRAE Standard 55–2004, Thermal Comfort Conditions for Human Occupancy. Credit 8: Daylight & Views: (up to 2 Points) • 8.1: Daylight available to 75% of Spaces • 8.2: Views provided for 90% of Spaces IAQ – Occupant Comfort 79
    • LEED® 2009 Approach Innovation in Design Credits: Innovation & Design Process ( Revised to 6 Points avail.) Note: previously 4 points were available. For 2009 version, LEED Steering Committee voted to grant a maximum of three points for exemplary performance, in addition to 2 design points Source: USGBC.org, A. Katz, 11/2008 80
    • LEED® 2009 Approach Strategies: Innovation & Design Process Credit 2: LEED® Accredited Professional • Retain a LEED® Accredited Professional on the project. – At least one principal participant of the project team Innovation in Design 81
    • LEED® 2009 Approach Strategies: Regionalization (to be finalized) • USGBC says "Regional Bonus Credits will be identified by the USGBC Chapters and Regional Councils for each ‘environmental zone’ and a maximum of four points are available for project teams to pursue. This work is currently underway.“ (USGBC Position as of Nov. ’08, delivery by May ’09) • Expectation – USGBC Regions gain authority to develop up to six potential bonus credits; a particular project may pursue a maximum of four. • Unknown – How each region handles balloting process and how USGBC “approves” the resulting credits. Stay tuned… Innovation in Design 82
    • LEED® 2009 Approach Some Lessons Learned 1999 - 2008 Energy efficiency usually best initial investment; more glass is not always “better” Renewable energy systems perform well on efficient buildings; not so well if poor energy efficiency Designers need to increase energy efficiency attainment to lessen Global Warming emissions Commissioning buildings is vital for performance Water efficiency is both practical and cost-effective Preventing/correcting indoor environmental problems yields large productivity benefits Recycling plan is vital; enabling building components to be recycled at end of life 83
    • Additional Information Sources • U.S. Green Building Council – Links Page http://www.usgbc.org/DisplayPage.aspx?CMSPageID=76 Additional updates on LEED® 2009 emergence will be listed here. • Building Green / Environmental Building News http://www.BuildingGreen.com • US EPA Green Building Portal http://www.epa.gov/greenbuilding/pubs/components.htm • US DoE High Performance Buildings http://www.eere.energy.gov/buildings/highperformance/ 84
    • Additional Information LEED 2009 Reference Guide When available, expected before May 2009, additional information on the Reference Guide will be found here at US GBC: Page Name: LEED Reference Documents http://www.usgbc.org/DisplayPage.aspx?CMSPageID=1762 85
    • Thank you for your kind attention! Now let’s begin the Q&A segment of the session Bion D. Howard, Consultant Building Environmental Science & Technology Web: http://www.energybuilder.com/ © 2008. Lorman Educational Services 86