8 Green Building Certification Credits

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Mervyn Boyd
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1 8 Green Building Certification Credits

2 San Francisco Stormwater Management Requirements and Design Guidelines Stormwater management can help project proponents achieve green building certification credits. In San Francisco, both Leadership in Energy and Environmental Design and the GreenPoint Rated system are being used to assess the environmental quality of site and building design. LEED The implementation of green infrastructure (GI) can help project proponents earn Leadership in Energy and Environmental Design (LEED) stormwater credits. Recognizing the multiple benefits of GI, project proponents may also earn LEED credits in other areas, such as Sustainable Sites and Water Efficiency (Tables 5 & 6). Projects seeking LEED credits for stormwater management may choose to meet different performance requirements, depending on time of project registration. Until October 31, 2016, projects can choose to pursue certification in either LEED version 2009 for New Construction and Major Renovation or LEED version 4 for Building Design and Construction. After this date, only LEED version 4 certification will be available. More information about LEED version 4 credits can be found at leed#credits. 8. Green Building Certification Credits 81

3 San Francisco Stormwater Management Requirements and Design Guidelines LEED version 2009 Combined sewer area projects seeking LEED version 2009 certification should achieve the Sustainable Sites Credit 6.1 Stormwater Design: Quantity Control for 1 point provided that the project meets the combined sewer area Case 1 or Case 2 requirements. Separate sewer area projects seeking LEED version 2009 certification should achieve the Sustainable Sites Credit 6.2 Stormwater Design: Quality Control for 1 point. Table 5. LEED version 2009 credits related to stormwater management LEED Category Credits Points Sustainable Sites SS6.1 Stormwater Design Quantity Control 1 SS6.2 Stormwater Design Quality Control 1 SS5.1 Site Development Protect or Restore Habitat 1 SS5.2 Site Development Maximize Open Space 1 SS7.1 Heat Island Effect Nonroof 1 SS7.2 Heat Island Effect Roof 1 WE1 Water Efficient Landscaping (Option 1) 2 Water Efficiency WE1 Water Efficient Landscaping (Option 2) 4 WE2 Innovative Wastewater Technologies 2 WE3 Water Use Reduction (30%, 35%, 40% Reduction) 2, 3, Green Building Certification Credits

4 San Francisco Stormwater Management Requirements and Design Guidelines LEED version 4 Projects seeking LEED version 4 certification must comply with more stringent stormwater management performance requirements. In LEED version 4, stormwater management credits have been combined under a single Rainwater Management credit in the Sustainable Sites category. This credit requires that the project use GI to manage the 98 th percentile rainfall event on-site for 3 points or the 95 th percentile event for 2 points; zero lot line projects (projects with buildings that extend to the property lines) receive 3 points for managing the 85 th percentile event. Both combined sewer area projects (Case 1 and Case 2) and separate sewer area projects that comply with the SMR may have to implement additional stormwater management to receive LEED version 4 stormwater management credits. Table 6. LEED version 4 credits related to stormwater management LEED Category Credit Points SS Rainwater Management (Option 1: Path 1, Path 2, Path 3) 2, 3, 4 a SS Rainwater Management (Option 2) 3 a Sustainable Sites Water Efficiency SS Site Development Protect or Restore Habitat (Option 1) 2 a SS Open Space 1 SS Heat Island Reduction (Option 1) 2 a SS Heat Island Reduction (Option 2) 1 a SS Site Assessment 1 WE Outdoor Water Use Reduction (Option 1) 2 a WE Outdoor Water Use Reduction (Option 2: 50%, 100% Reduction) 1, 2 WE Outdoor Water Use Reduction (25%, 30%, 35%, 40%, 45%, 50% Reduction) WE Cooling Tower Water Use 1, 2, 3, 4, 5, 6 b WE Water Metering 1 Notes: a. Except Healthcare facilities. b. School, Retail, Hospitality, and Healthcare facilities can earn an additional point by meeting additional requirements. c. Must meet minimum number of cycles to earn 1 point and use a minimum of 20% recycled non-potable water. 2 c 8. Green Building Certification Credits 83

5 San Francisco Stormwater Management Requirements and Design Guidelines GreenPoint Rated The GreenPoint Rated system is a California-based third-party residential certification system. In addition to stormwater credits, points can be earned in the areas of site design, landscaping, and exterior finishing (Table 7). More information about this system is available at greenpointrated.com. Table 7. GreemPoint Rated credits related to stormwater management GreenPoint Checklist(a) Section Site Landscape Points Measure (Category) A4 Heat Island Effect Reduction 1 (Energy) A6.1 Permeable Paving Material 1 (Water) A6.2 Filtration and/or Bio-Retention Features 1 (Water) A6.4 Smart Stormwater Street Design b 1 (Community) A7 Stormwater Control: Performance Path 3 (Water) C1 Plants Grouped by Water Needs (Hydrozoning) 1 (Water) C2 Three Inches of Mulch in Planting Beds 1 (Water) Drought Tolerant, California Native, C3.3 Mediterranean Species, or Other 3 (Water) Appropriate Species C6 High-Efficiency Irrigation System 2 (Water) C7 One Inch of Compost in the Top Six to Twelve Inches of Soil 2 (Water) C8 Rainwater Harvesting System 3 (Water) C9 Recycled Wastewater Irrigation System 1 (Water) C11 Landscape Meets Water Budget 2 (Water) C16 Maintenance Control with Certified Professional 1 (Water) 2 (Community), 2 (Energy) Exterior E6 Vegetated Roof Notes: a. Both Multifamily and Single Family Checklists b. Multifamily Checklist only Green Building Certification Credits

6 San Francisco Stormwater Management Requirements and Design Guidelines Boardwalks provide access across waterfront bioretention facilities in Seattle, WA. Photo: Rosey Jencks 8. Green Building Certification Credits 85

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Buildings and California s Water-Energy Nexus Green California Summit 2015 Wes Sullens Introduction Research and Findings Session Outline Getting from Here to There: Policy, LEED v4 & Beyond The Report