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1 SUSTAINABLE PAVEMENTS AHEAD Environmental issues:  threats & opportunities;  LEED for asphalt pavements The Road to the Future.

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Presentation on theme: "1 SUSTAINABLE PAVEMENTS AHEAD Environmental issues:  threats & opportunities;  LEED for asphalt pavements The Road to the Future."— Presentation transcript:

1 1 SUSTAINABLE PAVEMENTS AHEAD Environmental issues:  threats & opportunities;  LEED for asphalt pavements The Road to the Future

2 2

3 3

4 4 product greening is here to stay Climate Change, EPA, and regulations Projects chosen based on green: asphalt vs concrete Legislation and DOTs using green selection metrics Need to adapt

5 5 Pavement selection based on green metrics Green metrics at the local and federal level   LEED – required at all federal facilities   State DOTs, FHWA   RAP and warm mix get credit   UHI: asphalt is disadvantaged Concrete marketing and MIT   pavement impacts on fuel use green threats to asphalt market

6 6 Porous pavements manage stormwater OGFC: safe, quiet, and cool ASPHALT: environmentally sustainable pavement

7 7 benefits of OGFC

8 8 RAP is Nation’s No. 1 recycled material Small carbon footprint Warm Mix: reduces energy consumption ASPHALT: environmentally sustainable pavement RAP, porous, WMA, perpetual pvmts ■ Porous pavement manage stormwater ■ OGFC: safe, quiet, and cool

9 9

10 10 what’s a carbon footprint ??

11 11 what’s a carbon footprint ?? Definition:  life-cycle GHGs Why the interest ?  lot’s of pavement  versus cement  municipalities / EPA using as metric

12 12 pavement carbon footprint

13 13 pavement carbon footprint

14 14 pavement carbon footprint

15 15 pavement carbon footprint

16 16 pavement carbon footprint

17 17 pavement carbon footprint

18 18www.asphaltroads.org

19 19 UHI UHI: misperception warmer night-time urban areas energy loads and carbon footprints

20 20 UHI UHI: misperception ■ warmer night-time urban areas ■ energy loads and carbon footprints Black vs white LEED: (- 1) pt Whitescaping $$ Billions

21 21 Pavement thickness Reflected UV radiation Air voids (OGFC) Scientific uncertainty re UHI impact Industry path forward

22 22 components of carbon footprint  Traffic Delays  Mtls transportation  Pavement mtls  Urban Heat Island Extrapolation from Univ Cal – Berkeley study

23 23Smoothness Concrete says: Pavement Type Extrapolation from Univ Cal – Berkeley study pieces of the carbon pie UHI Materials

24 24 Flexible asphalt pavements cause increased fuel consumption fuel use vs pavement type Myth smoothness, NOT pavement type, is determinant for vehicle fuel consumption Fact

25 25 dispelling the pavement type myth The message: smoothness matters Big-ticket item Working with stakeholders Investing resources

26 26 SUSTAINABLE PAVEMENTS AHEAD LEED for asphalt pavements

27 27 What is LEED and how is it used LEED categories and credits LEED credits for asphalt Porous pavement, UHI, RAP LEED process Other green roadway systems Opportunities Why am I here

28 28 LEED:   Leadership in Energy & Environmental Design Developed by US Green Building Council (USGBC)   Not-for-profit, like ASTM Green Building Rating SystemLEED

29 29LEED

30 30 NAHB National Green Building Standard™ The Green Building Initiative™ - US USEPA: guidance and programs E-star US road construction green metrics: – – Green Roads – – NY GreenLITES – – FHWA-INVEST other green constr “stds”

31 31 The U.S. Green Building Council is the nation’s foremost coalition of leaders from across the building industry working to promote buildings that are environmentally responsible, profitable and healthy places to live and work. shortcomings Inflexible Lack of GHG criteria Based on “value” of materials USGBC’s mission

32 32 Leadership in Energy and Environmental Design Green Building Rating System™   Encourage / accelerate green building practices   Universal & accepted tools and criteria THE US market-based standard to distinguish / promote green building design So, why are we talking about this anyway? parking lots What does LEED do

33 Test LEED for new construction buildings Distribution by geography (DE) 38 (DC) 23 (DE) 24 (NH) 5 (OK) 4 68 AK=10 HI=16 PR=1 as of 07/06 33 LEED project distribution

34 34 GSA (Federal) Requires LEED Silver Various State and Local Governments also requiring Some jurisdictions accept quasi LEED Some big box builders require Residential communities Unprecedented interest Who’s using LEED

35 35 LEED Certification Levels Points Required Certified Points Silver Points Gold Points Platinum 80 Points and above Projects are certified, not materials, products, companies, or individuals LEED certification levels

36 36 5 key areas: – –Sustainable site development – –Water savings – –Energy efficiency – –Materials selection – –Indoor environmental quality Earning LEED certification – –Must meet certain criteria  credits / certification – –Levels based on total credits How do asphalt pavements contribute to LEED LEED process

37 37 Category Possible Points Sustainable Sites:16 Water Efficiency: 5 Materials & Resources:13 Energy & Atmosphere: 17 Indoor Environ. Quality: 14 Innovation & Design: 5 LEED process

38 38 LEED credit for asphalt

39 39 LEED credit for asphalt

40 40 LEED credit for asphalt

41 41 Sustainable Sites Credit 6.1 and 6.2 Stormwater control: quantity / quality 1 credit for each Porous asphalt pavements qualify NAPA has a good bit of information on constructing porous pavements Mix design / construction practices, maintenance SS credits: stormwater control

42 42 LEED credit for asphalt

43 43 Sustainable Sites Credit 7.1 Reduce UHI through pavement selection Use light-colored/high-albedo materials (reflectance of at least 0.3) for xx% of the site’s non-roof impervious surfaces Other strategies: undergrnd / solar parking roofs, shade trees, “open grid paving” From 1 to 3 credits (depending on program) SS credits: UHI non-roof

44 44 Surface Chip Seals and Coatings: using reflective / light-colored chip / paints Reflective pavements

45 45 “Gritting”: reflective chips and aggregate Reflective pavements

46 46 Shot-Blasting: abrading surface binder Reflective pavements

47 47 Pavement thickness Reflected UV radiation Air voids (OGFC) Scientific uncertainty re UHI impact Industry path forward

48 48 5 credits LEED credit for asphalt

49 49 Category Possible Points Sustainable Sites:16 Water Efficiency: 5 Materials & Resources:13 Energy & Atmosphere: 17 Indoor Environ. Quality: 14 Innovation & Design: 5 LEED process

50 50 Category Possible Points Sustainable Sites:16 Water Efficiency: 5 Materials & Resources:13 Energy & Atmosphere: 17 Indoor Environ. Quality: 14 Innovation & Design: 5 LEED process

51 51 LEED credit for asphalt

52 52 RAP = recycled content category Nation’s No. 1 recycled material Identify materials manufactured and extracted regionally (within 500 miles) Easy (partial) credits to get RAP & regional materials

53 53 Category Possible Points Sustainable Sites:16 Water Efficiency: 5 Materials & Resources:13 Energy & Atmosphere: 17 Indoor Environ. Quality: 14 Innovation & Design: __ from asphalt 13 LEED process

54 54 Credit based on value Pavement is relatively inexpensive Even 100% RAP – minimal LEED “value” Same with Regional Materials / Reuse Used to supplement Debatable whether true “green” practice Why not a “carbon footprint” approach ? What about Warm Mix: ID credit request – –40% GHG reduction (~ 40% RAP + WMA) doesn’t get credit deserved

55 55 Work with the building team leader   Will need LEED-accredited professional Assist with documentation of:   Recycled content (RAP)   Regionally acquired materials   Permeability of porous asphalt pavement Solar Reflectance Index - at least 29 Other potential ID credits: WMA + high RAPdocumentation

56 56 NAPA’s LEED brochure

57 57 University of Washington: GreenRoads Provides a “LEED Like” measurement tool for highway material selection EPA / FHWA Green Highways - INVEST Focuses on “best practices” European Road Authority directives Focusing on “carbon footprint” LCA Other systems coming: NY- GreenLITES other “green” road “stds”

58 58 Familiarize yourself with green-building lingo Seek-out green-building Stakeholders – –(landscape) architects, developers – –Municipal leaders Promote “common-sense” vs LEED criteria – –Municipalities have leeway to define “green” – –RAP and OGFC/porous pvmt are GREEN Recycle, safety, noise, water quality, WMA Understand / promote GHG / carbon footprints LEED opportunities

59 59 Product greening: promoting asphalt Position your product line & company Respond to concrete’s threats   Scientific validity of industry-sponsored studies Use industry tools / information: our new portal - NAPA’s response to market challenges Get the message out: asphalt is green maximizing business opportunities

60 60 Questions ?? 60 “it ain’t easy being green!”


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