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Green Building News February 2006 |
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February 20, 2006 EPA Studies Equate Higher-Density Development With Water Protection 1. Protecting Water Resources with Higher-Density Development The study detailed in "Protecting Water Resources with Higher-Density Development" intends to help communities better understand the impacts of higher and lower density on water resources. The EPA modeled stormwater runoff from three different densities at three scales - one-acre level, lot level, and watershed level - and at three different time series build-outs to examine the premise that lower-density development is always better for water quality. The findings indicated that "low-density development may not always be the preferred strategy for protecting water resources. Higher densities may better protect water quality - especially at the lot level and watershed scale," the EPA said. The study found that higher-density scenarios generate less storm water runoff per house at all scales - one acre, lot, and watershed - and time series build-out examples. For the same amount of development, the EPA says, higher-density development produces less runoff and less impervious cover than low-density development. For a given amount of growth, the agency found, lower-density development impacts more of the watershed. But this is one of the more controversial areas in water quality. Some stormwater professionals take issue with these findings, saying that increasing density does not protect water resources. Instead, they advise, the most effective way to protect water quality is to reduce the amount of runoff from a site with the use of measures such as bio-swales, cisterns, porous paving, dry wells, green roofs, and native landscaping. To comply with the Clean Water Act, over 6,000 communities across the nation are developing municipal stormwater permitting programs, also known as Phases I & II. Many of these communities are also implementing programs that encourage development in existing communities, redevelopment of vacant properties, promote transportation options and facilitate efficient use of land and infrastructure. "Using Smart Growth Techniques as Stormwater Best Management Practices" reviews nine common smart growth techniques and examines how they can be used to prevent or manage stormwater runoff. The EPA says this publication will help communities encourage smart growth and meet the new regulatory requirements. The publication, "Growing Toward More Efficient Water Use: Linking Development, Infrastructure, and Drinking Water Policies" focuses on the relationship between development patterns, water use, and the cost of water delivery. It reviews literature that shows how large-lot, dispersed development patterns cost more to serve because of the length of pipe required, pumping costs, and other factors. The literature reviewed shows how large-lot, dispersed development uses more water than smaller lot, higher density development. This publication concludes with policy options for states, localities, and utilities that directly reduce the cost and demand for water, while indirectly promoting smart growth. These policies offer opportunities for more efficient water use at a time when many communities face water shortages due to drought. "Parking Spaces / Community Places: Finding the Balance through Smart Growth Solutions" highlights approaches that balance parking with broader community goals. Current codes typically apply inflexible minimums that ignore community and developer priorities including environmental quality and human health. An oversupply of unnecessary parking wastes money and creates places that degrade water quality and encourage excess driving and air emissions. The highlighted solutions cover a range of supply management, demand management, and pricing strategies. Communities have found that combinations of parking pricing, shared parking, demand management, and other techniques have helped them create vibrant places while protecting environmental quality and still providing for necessary vehicle storage. For free hard copies of any of these publications, send an e-mail to ncepimal@one.net or call 1-800-490-9198. California PUC Creates Groundbreaking Solar Energy Program The California Solar Initiative includes the following provisions:
"We are taking an important step today to lay out a framework for an orderly, 10-year approach to creating a sustainable solar industry. Our hope is that solar will become a major part of California's energy portfolio, to provide clean and inexpensive distributed generation to millions of California consumers," said President Peevey. "Our plan is to offer a subsidy now to push the deployment of an important part of our sustainable energy future in the long-run. This solar program simply offers one of the many emerging alternatives to consumers concerned about a clean energy future."
Energy-Efficient, Environmentally Safe Buildings Win Recognition Commercial buildings account for more than 17 percent of our nation's greenhouse gas emissions. ENERGY STAR-qualified buildings generally use up to 40 percent less energy than typical buildings. Building owners earn the ENERGY STAR by scoring in the top 25 percent on EPA's energy performance rating system. Scores are based on actual energy use. Among the top performing buildings are 1007 office buildings, 501 public schools and 834 grocery stores. More than 200 hotels, hospitals, medical offices, and other buildings also earned the ENERGY STAR. Food Lion leads the list as owner of the most ENERGY STAR buildings. Top-performing buildings are found in every state in the nation and the District of Columbia. The most ENERGY STAR buildings are located in California, Texas, North Carolina, Virginia, Colorado, and Ohio. ENERGY STAR is a government-backed program helping businesses and consumers protect the environment through superior energy efficiency. More than 7,000 organizations partner with EPA in the ENERGY STAR program. In 2004 alone, Americans, with the help of ENERGY STAR, saved $10 billion dollars and prevented greenhouse gas emissions equivalent to those from 20 million cars. Click here for more information and a complete list of buildings and their locations.
2006 National Green Building Conference - March 13-14 The goal at this conference is to provide all attendees, exhibitors, presenters and sponsors with an outstanding opportunity to improve their knowledge, increase their contacts, and generate productive networking. The high caliber education programs will give you a chance to meet other green-minded builders from all around the country as well as meet with exhibitors with products to help you build a better home. Conference Features: Green Construction 2006 - April 12-13 West Coast Green Building Expo 2006 - September 28 - September 30 Educational Tracks
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