Water System Sustainability Symposium

Transcription

1 Presentation by: Richard N. Davee, P.E. Senior Vice President Wright-Pierce Water System Sustainability Symposium Sponsored by:

2 Sustainable Design Sustainable design is the philosophy of designing physical objects, the built environment, and services to comply with the principles of economic, social and environmental sustainability.

3 Benefits of Sustainable Design Reduces environmental impact Positive impact on public health and the environment Peak efficiency Reduces operating costs Enhances building and organizational marketability Increases occupant productivity Reduces Absenteeism Enhances public support of project

4 U.S. BUILDINGS ACCOUNT FOR: 12% Water Use 12 30% Greenhouse Gas Emissions 65% Waste Output 70% Electricity Consumption ADVERSE ENVIRONMENTAL IMPACTS RESOURCE AND ENERGY INEFFICIENCY WASTED OPERATING COSTS

5 Average Savings of Green Buildings CARBON SAVINGS 35% WATER USE SAVINGS 30-50% WASTE COST SAVINGS 50-90% ENERGY SAVINGS 30% Source: Capital E

6 LEEDing the way Leadership in Energy and Environmental Design (LEED) Certification program Administered by the U.S. Green Building Council (USGBC) USGBC started in

7 LEED for New Construction LEED Version 2.2 CERTIFIED POINTS SILVER POINTS GOLD POINTS PLATINUM POINTS TOTAL POSSIBLE: 69 POINTS SUSTAINABLE SITES WATER EFFICIENCY ENERGY & ATMOSPHERE MATERIALS & RESOURCES INDOOR ENVIRONMENTAL QUALITY INNOVATION IN DESIGN 14 POINTS 5 POINTS 17 POINTS 13 POINTS 15 POINTS 5 POINTS Our project is using this version

8 LEED for New Construction LEED 2009 CERTIFIED POINTS SILVER POINTS GOLD POINTS PLATINUM POINTS TOTAL POSSIBLE: 110 POINTS SUSTAINABLE SITES WATER EFFICIENCY ENERGY & ATMOSPHERE MATERIALS & RESOURCES INDOOR ENVIRONMENTAL QUALITY INNOVATION IN DESIGN REGIONAL PRIORITY 26 POINTS 10 POINTS 35 POINTS 14 POINTS 15 POINTS 5 POINTS 4 POINTS Structure and scope is consistent Point scaling change Regional Priority category added

9 LEED Certification Process Registration fees - $900 Online submittals Design phase and construction phase Design review - $2,000 Construction review - $500 Role of LEED Associate Professional (AP)

10 LEED Certification Process (continued) LEED kick-off meeting with project team and owner Obtain building services buy-in Set level of certification desired First cut at checklist Designate a LEED manager (ideally LEED AP) Assign responsibilities

11 Cocheco Well Water Treatment Facility Groundwater treatment ph adjustment Radon removal Fluoride Corrosion control/sequestration Construction cost ~ $2.2 million Scheduled completion Fall 2010

12 Elevations

13 Expected Certification Points Sustainable sites - 6 points Water efficiency - 5 points Energy and atmosphere - 6 points Materials and resources - 4 points Indoor environmental quality - 10 points Innovative design 5 points Total expected 36 Points Silver

14 Sustainable Sites Open space Stormwater infiltration Minimized pavement High reflectivity roof Cut-off lighting

15 Water Efficiency No irrigation Native plants Low flow/no flow plumbing fixtures Composting Toilet

16 Energy and Atmosphere Optimize energy oerformance 24% reduction from baseline building Heat recovery systems Process equipment does not count in energy calculations Zero use CFC-based refrigerants Green power Renewable energy certificates

17 Heat Recovery System WATER TO AIR HEAT PUMP HEAT EXCHANGER SAFETY VALVE CLEARWELL CIRCULATION PUMP CIRCULATION PUMP PROCESS WATER HEAT EXCHANGE LIQUID REFRIGERANT BACKFLOW PREVENTER

18 Materials and Resources Recycled content > 10% Regional materials > 20% (concrete, CMU, wood trusses ) Construction waste management (>75% diversion from landfill) FSC certified wood >50%

19 Indoor Environmental Quality Indoor pollution control Specifying low emitting materials (paints, adhesives, sealants ) Control of heating system Control of lighting system Daylight in occupied areas

20 Innovative Design Innovative wastewater technology Composting toilet (zero sewer discharge) >40% regional content >75% protected land area >50% open space LEED AP on team

21 Cost of Green Design Added design cost Assume standard % of construction cost 2 to 8% Rochester $3.5 Million construction cost - $30,000 budgeted for extra design cost Construction cost Real world examples illustrate that green building projects can be completed for an average of only 2% more (or from $3 to $5 per square foot) in up-front costs. $3.5 million project additional contractor cost for compliance of ~$15K-$30K $

22 Additional construction costs

23 Additional Costs Registration fees $900-$1200 Design and construction reviews for < 50,000 sf, fixed $2500 Commissioning costs USGBC reports average commissioning costs of $1/SF Successful implementation of commissioning process often yields energy improvements of 5-10% (median payback of 4.8 years).

24 Challenges and Obstacles Whole team buy-in Additional upfront costs Time to get up to speed Letting go of old habits and embracing technology Contractors buy-in (write solid specs!)

25 Questions & Answers For more information contact: Rick Davee, P.E Member U.S. Green Building Council