Green Real Estate NSCC - RES 130 Online Module 3 Sustainable Sites & Water Cate O dahl, Instructor 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
Relationship of the Building to Water Issues on Site Critical Areas Areas Designated by Governmental Jurisdictions as having significant value Site Hydrology Ground Water Recharge Areas Topography Stormwater Runoff North Seattle Community College Wetlands Source: Front Page Critical Areas Areas Designated by Governmental Jurisdictions as having significant value Wetlands Shoreline Bluffs Steep Slopes Source: Dirty Dog Productions
Critical Areas Critical Areas Ordinance Washington State law protecting the functions and values of critical areas Site Assessment Site evaluation to determine the presence of critical areas for protection Source: Getpimby.com Red Light Challenge List the Elements of a Comprehensive Site Assessment?
Red Light Challenge List the Elements of a Comprehensive Site Assessment? Wind Toxics Topography Vegetation Solar Soils Humidity Energy Wildlife Habitat Groundwater Temperature Aesthetics and Views History Surface Waters Impact on Neighbors Low Impact Development Land planning and engineering design approach for infiltration Infiltration, filtering, storing, and detaining runoff close to where the rain falls and designed to mimic pre-development conditions Conservation of water Use of natural features on-site to protect water quality
Low Impact Development Stormwater management strategy Consists of a series of small-scale hydrologic controls to replicate pre-development conditions Practices that adhere to LID principles: bioretention facilities rain gardens vegetated rooftops rainwater harvesting (rain barrels and cisterns) permeable pavements Impacts on Hydrology from Development, Before & After Water hydrology BEFORE development Water hydrology AFTER development
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? Source: UW College of Engineering Site Hydrology Understanding how water moves across a site before design Topography How, and where, does stormwater move across the terrain? Where is it draining Where is it accumulating? gsapubs.org
Stormwater Runoff The environmental goal for managing stormwater is Infiltration On-site Traditional vs. Low Impact Source: National Academic Press Puget Sound starts here Source: City of Seattle, SEA Streets http://www.seattle.gov/util/about_spu/drainage_&_sewer_system/ GreenStormwaterInfrastructure/NaturalDrainageProjects/StreetEdge Alternatives/ Green Landscaping Design Site Protection in the Built Green Checklist Avoid Soil Compaction (2-19) Soil compaction harms plants and encourages run-off Preserve Existing Native Vegetation (2-21) Native vegetation is adapted to our climate, conditions retaining native species helps with erosion, sediment, and dust control Retain Trees On-Site (2-23) Trees moderate temperature and help to control the urban heat island effect, they also add value If Building Near Critical Areas, Preserve and Protect Beyond Code (2-24) Set Aside Percentage of Building Site to be Left Undisturbed (2-25)
Green Landscaping Design Water Conservation in the Built Green Checklist Amend Disturbed Soil with Compost (2-34) Compost aid is water retention of the underlying soil, thus less water is required to nourish the plants Mulch Landscape Beds (2-60) Mulch helps to minimize weeds Limit Use of Turf Grass (2-61) Turf grass required watering and maintenance Landscape with Appropriate Plants (2-63) NW Bloom Correctly selected plants help to reduce watering requirements - right plant, right place Soil moisture sensor for irrigation (2-71) Use of sensors significantly reduce water consumption to irrigate No Irrigation after One-Year (2-67) Green Products for Site & Water Outdoor Water Conservation Simple rain barrel roof-top collection for irrigation Indoor Water Conservation Faucet aerator Low-flow showerhead Rainwater Collection Major cistern to collect rain water for multiple possible uses - irrigation, toilet-flushing, or laundry, as is allowed in the City of Seattle Dual-flush toilet - 0.08 gallon flush for liquid waste, uses ½the water Composting toilet some models don t use any water
Innovative Strategies for Better Water Efficiency and Use 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 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. http://www.doh.wa.gov/portals/1/documents/pubs/337-062.pdf For details on Washington State Greywater Code, click here. http://www.doh.wa.gov/communityandenvironment/wastewater Management/GreywaterReuse Green Roofs - Precisely planted roof alternative that provide opportunity for stormwater to stay on-site Applying Learning Objectives to Built Green Checklist Section Two Site and Water Three Sub-Sections Site Protection Water Protection Environmental Design Concepts Site & Water Pre-Requisites in Checklist 104 Credits Available Extra Credit for Innovation Review the checklist, locate Section Two, find pre-requisites and Extra Credit
Built Green Site & Water Sub-Sections Site Protection Example: Build on an Infill Lot Water Protection Example: Install Rainwater Collection Environmental Design Concepts Example: Position Garage away from the front Site Protection in the Built Green Checklist Protect Site s Natural Features Protect Natural Processes On-Site Impervious Surfaces Eliminate Water Pollutants Pervious Concrete Demonstration https://www.youtube.com/watch? v=bred1tbf_mq Preserve Existing Native Vegetation Big Wood at 92 nd Street, Mukilteo, WA Pervious Concrete at Stratford Place, Sultan WA http://www.perviouscrete.com/en/ photo_gallery/stratford_place/
Water Protection in the Built Green Checklist Indoor Conservation Install High Performance Low-Flush Toilets Indoor Water Quality Install Whole House Water Filter System Outdoor Conservation Drip Irrigation at Snoqualmie Gourmet Ice Cream, Maltby, WA Environmental Design Concepts in the Built Green Checklist Good Walk Score Build within ½ mile of six essential services Build within ¼ mile of transit stop Proximity to bike amenities within 1 mile Improve View of Neighbors Provide Accessory Dwelling Unit Provide a Front Porch
Green Real Estate Your job, as Real Estate Professionals, is to understand the distinctions of Green Building Features and to communicate those distinctions to your clients Save on Time, Money, and the Homeowner s Back! Add Market Value Protect Environment Built Green Sustainable Site features that Save Money, Time, and Your Client s Back! Limit or No Turf Grass Drought-Tolerant Landscaping No Irrigation Required Infiltrate Roof Top Run-Off Amend Soil with Compost Native Vegetation
Built Green Sustainable Site features that Add Market Value Accessory Dwelling Units (ADU s) Native Vegetation Clear Area to South for Passive and Active Solar Rainwater Collection High Performance Low-Flush Toilets Velocipede Architects Built Green Sustainable Site features that Protect the Environment Build on Infill, Greyfield, or Brownfield Lots Strategic Clearing & Grading Preserve Existing Native Vegetation Preserve and Protect Critical Areas Amend Soil with Compost Allow Groundwater Recharge Cottage Wërks
Next Class: Energy Performance NW Energy Star Homes Green Products Energy Upgrades Energy Efficiency in Built Green Next Class Assignments From your textbook, Your Green Home, by Alex Wilson Chapter 9 "Creating a Safe Indoor Environment" From the Nisqually Building Guide "Healthy and Safe Indoor Environments" by Cate O'dahl, page 18 From the Sustainable Living Guide "Indoor Air Quality and Your Home" by Cheri Zehner, page 34