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Green Real Estate NSCC - RES 130 Online Week 3 Sustainable Sites & Water Cate O’dahl, Instructor.

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Presentation on theme: "Green Real Estate NSCC - RES 130 Online Week 3 Sustainable Sites & Water Cate O’dahl, Instructor."— Presentation transcript:

1 Green Real Estate NSCC - RES 130 Online Week 3 Sustainable Sites & Water Cate O’dahl, Instructor

2 Sustainable Sites / Water Conservation Learning Objectives Relationship of the Building to Water Issues on Site Green Landscaping Designs Green Products Innovative Strategies for Better Water Efficiency and Use Clearwater Commons Site Plan Bothell, WA

3 Relationship of the Building to Water Issues on Site Critical Areas Areas Designated by Governmental Jurisdictions as having significant value Wetlands Shorelines Bluffs Steep Slopes Site Hydrology Ground Water Recharge Areas Topography Stormwater Runoff North Seattle Community College Wetlands Source: Front Page

4 Critical Areas Wetlands, Shoreline, Bluffs, and Steep Slopes Critical Areas Ordinance Washington State law protecting these areas Site Assessment Site evaluation to determine the presence of critical areas for protection Low Impact Development Strategies of development that minimize impact on critical areas Source:

5 Red Light Challenge List the elements of a comprehensive Site Assessment? Topography Soils Surface Waters Groundwater Vegetation Wildlife Habitat Temperature Humidity Wind Solar Energy History Toxics Aesthetics and Views Impact on Neighbors

6 Low Impact Development Land planning and engineering design approach Conservation and use of on-site natural features to protect water quality Consists of a series of small-scale hydrologic controls to replicate pre-development conditions Infiltration, filtering, storing, and detaining runoff close to where the rain falls and designed to mimic pre- development conditions

7 Impacts on Hydrology from Development, Before & After Water hydrology AFTER development Water hydrology BEFORE development

8 Site Hydrology Understanding how water moves across a site before design Groundwater Recharge Where is the stormwater naturally infiltrating into the ground to recharge aquifers or groundwater? Topography How, and where, does stormwater move across the terrain? Where is is draining, where is it accumulating? Source: UW College of Engineering

9 Stormwater Runoff Source: National Academic Press The environmental goal for managing stormwater is on-site Infiltration Source: City of Seattle, SEA Streets SEA Streets Traditional vs. Low Impact Puget Sound starts here

10 Green Landscaping Design – Site Protection in the Built Green Checklist Avoid Soil Compaction (2-4) Soil compaction harms plants and encourages run-off Preserve Existing Native Vegetation (2-5) Native vegetation is adapted to our climate conditions, retaining native species helps with erosion, sediment, and dust control Retain 30% of Trees on Site (2-6) Trees moderate temperature and help to control the urban heat island effect, they also add value Retain or Add Deciduous Trees Southside (2-7) Properly placed trees reduce heating and cooling costs If Building Near Critical Areas, Preserve and Protect Beyond Code (2-9) Set Aside Percentage of Building Site to be Left Undisturbed (2-10)

11 Green Landscaping Design – Water Conservation in the Built Green Checklist Amend Disturbed Soil with Compost (2-15) Compost aid is water retention of the underlying soil, thus less water is required to nourish the plants Mulch Landscape Beds (2-36) Mulch helps to minimize weeds Limit Use of Turf Grass (2-37 – 2-38) Turf grass required watering and maintenance Landscape with Appropriate Plants (2-39) Correctly selected plants help to reduce watering requirements - right plant, right place Sub-Surface or Drip System Irrigation (2-41) Sub-surface or drip irrigation systems use significantly less water compared to “pop-up” above- ground systems No Irrigation after One-Year (2-42) NW Bloom

12 Green Products for Site & Water Rainwater Collection Indoor Water Conservation Simple rain barrel roof-top collection for irrigation Major cistern to collect rain water for multiple possible uses - irrigation, toilet-flushing, or laundry, as is allowed in the City of Seattle Low-flow showerheadFaucet aerator Dual-flush toilet - 0.08 gallon flush for liquid waste, uses ½ the water Outdoor Water Conservation Composting toilet – some models don’t use any water

13 Innovative Strategies for Better Water Efficiency and Use Easy DIY Greywater Recycling System: Sloan Aqus Greywater Recycling - uses waste water from the sink as the water source for flushing toilets, thereby eliminating the use of drinking water as the initial source. For information on Washington’s NEW rules for Greywater Reuse for Subsurface Irrigation, click here For details on Washington State Greywater Code, click here. Built-In Composting instead of putting food scraps down the drain with a garbage disposal, helps to eliminate unwanted materials that ultimately travel to and pollute Puget Sound Green Roofs - Precisely planted roof alternative that provide opportunity for stormwater to stay on-site

14 Applying Learning Objectives to Built Green® Checklist Section Two – Site and Water Three Sub-Sections under Section Two Site & Water Pre-Requisites in Checklist 266 points Possible Extra Credit for Innovation Review the checklist, locate Section Two, find pre-requisites and Extra Credit

15 Built Green® - Site & Water Sections Site Protection Water Protection Environmental Design Concepts Example: Build on an Infill Lot Example: Install Rainwater Collection Example: Position Garage

16 Site Protection in the Built Green Checklist Protect Site’s Natural Features Protect Natural Processes On-Site Impervious Surfaces Eliminate Water Pollutants Pervious Concrete at Stratford Place, Sultan WA Preserve Existing Native Vegetation – Big Wood at 92 nd Street, Mukilteo, WA Pervious Concrete Demonstration

17 Water Protection in the Built Green Checklist Drip Irrigation at Snoqualmie Gourmet Ice Cream, Maltby, WA Install High Performance Low-Flush Toilets Install Whole House Water Filter System

18 Environmental Design Concepts in the Built Green Checklist Provide Accessory Dwelling Unit Provide a Front Porch Build North Area of Lot First June

19 Green Real Estate Your job as Real Estate Professionals is to understand the distinctions and how to communicate those distinctions to your clients Save on Time, Money, and the Homeowner’s Back! Add Market Value Protect Environment

20 Built Green® Sustainable Site features that Save Money, Time, and Your Client’s Back! No Turf Grass Drought-Tolerant Landscaping No Irrigation Required Infiltrate Roof Top Run-Off Amend Soil with Compost Native Vegetation

21 Built Green® Sustainable Site features that Add Market Value ADU ’ s and Design Features Native Vegetation Deciduous Trees South of the House Rainwater Collection High Performance Low-Flush Toilets Velocipede Architects

22 Built Green® Sustainable Site features that Protect the Environment Protect the Environment Build on Infill Lots Strategic Clearing & Grading Preserve Existing Native Vegetation Do NOT Build In Critical Areas Amend Soil with Compost Allow Groundwater Recharge Cottage Wërks

23 Next Class Energy Performance NW Energy Star Homes Green Products Energy Upgrades Energy Efficiency in Built Green

24 Next Class – Assignments Read Your Green Home Chapters Five, Six and Seven

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