Showing posts with label Policy. Show all posts
Showing posts with label Policy. Show all posts

Wednesday, December 18, 2013

The Next Generation of Infrastructure


Shanghai, China. Image © Scott Muller
by Scott Muller

The next generation of urban infrastructure will not be built. This is to say, that a sustainable future will not come from new technologies. Urgent demand is already overwhelming adequate risk management and urban governance capacities. While indeed carbon-free light rail, driverless cars and desalination plants will be in unquenchable demand, none of it will happen successfully without a bankable environment that aggressively manages the social, political, financial and environmental risks of new infrastructure. The barriers to the next generation of infrastructure [1] are neither technical nor financial; rather they’re social and political. Effectively responding to the unprecedented need for urban infrastructure hinges on the successful process over the high-tech outcome.

New Urban Dynamics

Cities have replaced national governments as the de facto drivers of global economic growth and human development. In fact, 300 of the largest metro economies worldwide, containing just 19% of the world’s population, delivered nearly half of the global economic output in 2011 [2]. A recent analysis by the McKinsey Global Institute reveals that by 2025, more than two thirds of global GDP will be produced by just 600 cities – the majority of them in emerging countries [3].

But importantly, economic growth does not alone create stability. Spanning from the least to the most developed, the fate of cities is one of increasing vulnerability to climate change, resource scarcity and rapid population growth.

Hyper-Urbanization

By the year 2030 world urban population will increase to nearly 5 billion persons (1.35 billion more than present), increasing the planet’s urban area by an astonishing 150% in less than 20 years. Sixty percent of the area to be urban by 2030 has yet to be built [4]. Contrary to the trend of the 20th century, the majority of this urban growth (and commensurate economic growth) will occur in developing countries and mainly in second-tier and lower cities. From now to 2030, the world will need to build the equivalent of a city of one million people in developing countries every five days. Their intense demand for the rapid construction of new infrastructure threatens their already challenged risk management and urban governance capacities.

Nexus Issues

Incongruous to this rapid urbanization, is the reality that current growth is no longer supported by sustainable inputs, as we are already 50% in “overshoot.” In other words, human systems are presently using 50% more than the annual productivity and assimilating capacity of the planet’s ecosystems [5]. This unsustainable consumption of ecosystem services to subsidize the growth of cities is progressing ever farther along the urban-to-rural gradient. One result is an ominous energy-water-food nexus of demand confronting city, regional and national decision makers.

As urbanization reaches farther beyond its geopolitical borders to satisfy ever-greater metabolic demands, rural communities and families are linearly assimilated into “foreign” urban economies, with marked social and cultural impacts. Families with rural legacies can be insurmountably challenged by joining an urban economy yet remaining spatially disconnected from services. In the end, urban migration is more often not so much a quest for economic prosperity, as it is a survival strategy for the rurally displaced.

Climate Change

Continued urban development is made more complex by a third, interrelated, crosscutting element: climate change. Increasing climate disruptions are changing the fundamental rules of city planning and administration. Rapid climate change is altering both the risk (threats) and the fitness (responses) landscapes of cities. Unfamiliar risks and new statistical criteria have rendered historical “business-as-usual” strategies increasingly ineffective and detrimental with direct implications on safety, quality of life and the economic performance of cities. Uncertainty is now a fundamental core element of urban development, along with non-linear growth patterns, runaway positive feedback/ cascading failures, hidden thresholds and irrevocable tipping points. The rapidly reshaping insurance industry is but one example of shifting solutions – with increased disaster intensities and frequencies, the utility of insurance to guarantee major new infrastructure investments becomes increasingly untenable.

Manchay, Lima, Peru. Image © Scott Muller

The Managerial and Policy Challenge

As urban economies mature in developing countries, and as cities become increasingly more vulnerable, their decision-making power is rising and yet becoming more complex at the same time. The speed of urbanization and the new risk landscape present a profound managerial and policy challenge for municipalities. Cities and metropolitan governments are now obligated to deal with exponential rates of urban immigration; protect and conserve the surrounding landscapes and ecosystem services sourced outside their geopolitical boundaries; ensure sufficient energy supplies for their industry and residents; finance, construct and maintain hard infrastructure; respond to the pressing challenge of sea level rise; attract private industry and foreign investment; negotiate with multilateral development banks (MDBs) and engage with foreign government official development assistance (ODA).

Spanning from the least to the most developed, the fate of cities is one of increasing vulnerability to climate change, resource scarcity and rapid population growth. The fate of the world has become the fate of cities. There has emerged with great immediacy, a revolutionary worldwide discourse on how to best make cities more sustainable: building resilience, enabling transformation and de-risking the economy.

Addressing Vulnerabilities

The thoughtful development and management of new infrastructure is a powerful way to de-risk cities. But often overlooked in the speculative, investment driven rush to build, is the fact that infrastructure impacts the sustainability of urban systems in several ways; some of them less immediately apparent to elected officials.

Infrastructure’s impact on urban sustainability includes positive performance gains, but additionally, it can also create negative pathway dependencies and the commensurate loss of “optionality.” However, thirdly and most importantly, the demand for urban infrastructure creates a unique circumstance – when often disparate socioeconomic groups briefly share an orbit around an issue involving a public good or a common pool resource. This is a critical opportunity to generate and strengthen urban social capital – the key success attribute for the next generation of infrastructure.

Estimates suggest that US$ 53 trillion must be spent on infrastructure worldwide by 2030 to adequately manage the rapid growth of cities [6]. In 2011, the High Level Panel on Infrastructure for Recommendations to the G20 pointed out that the key constraint to infrastructure development is not a lack of funding. After all, financing can technically be created to support low-risk investments. Rather, they identify the principal barrier to rapid infrastructure development as the absence of a strong pipeline of bankable projects [7]. This is to say, infrastructure projects must be low-risk to qualify as “bankable.” Infrastructure in developing countries is an asset class highly vulnerable to political, regulatory and execution risk. Therefore, managing the social, political, financial and environmental risk of infrastructure projects should be the priority when pursuing the performance gains of new infrastructure.

The most important investment a city can make today is developing integrated, cross-disciplinary capacity within the “infrastructure development process,” and the commensurate tools and methods to mitigate the social, political, and financial risks. Building this systemic capacity allows successful urban development along a range of fronts, among them the “next generation” of infrastructure.

To create goal-seeking behavior towards sustainability and avoid the development of unsafe slums and unsupportable resource-intensive path dependencies, it becomes essential that all sectors of civil society have a seat at the table to participate in the selection, design, launch, management and perhaps ownership of infrastructure projects.

Collective Actions and Horizon Lines

Cities are Human-Environment Systems (HES), appreciably comprised of common pool resources and public goods. These interact in ever-shifting equations to one day ostensibly arrive at an equitable, circular economy.

HES are considered to be complex adaptive systems because they consist of influential, interacting smaller systems that self-organize as a whole. As they grow, the challenging issues of overuse and equity must continually be addressed. More specifically, growing cities are subject to social dilemmas and the problems of collective action and inter-temporal resource allocation. Collective action challenges in cities relate to the fact that individuals and subgroups make decisions based on particular desires without considering the impacts their decisions may have for others in society. Inter-temporal resource allocation dilemmas involve individuals and subgroups making decisions locally in time (short time horizon, or equivalently applying a high discount rate) without considering the long term/ global consequences of these choices.

As a complex adaptive system, HES can demonstrate goal-seeking behavior. So it is important to point out that the rapid expansion of cities is not impeded by the absence of adequate planning, transportation, housing, finance or attention to risks. Rapid urbanization occurs whether infrastructure is planned or not; “electricity and cable are first stolen and later gentrified” [8]. To create goal-seeking behavior towards sustainability and avoid the development of unsafe slums and unsupportable resource-intensive path dependencies, it becomes essential that all sectors of civil society have a seat at the table to participate in the selection, design, launch, management and perhaps ownership of infrastructure projects. Citizen access to and participation in public decision making, along with building coalitions and multi-sector partnerships will not only significantly increase the success of infrastructure projects, it will also unlock latent circular economies and subsequently advance the sustainability of the Human-Environment System.

The Renewable Power of Shared Learning

One method to efficiently enable integrated capacity and multi-sector collaboration along the infrastructure development process is by creating peer learning environments among municipal government officials as well as civil society. Research demonstrates that the bottom-up accumulation of knowledge by professionals via peer-to-peer learning experiences is one of the most important factors in the types of projects and policies that make their way into successful strategic planning and policy proposals [9]. Peer learning builds capacities of all stakeholders and decision-makers, promoting effective functioning beyond a single project, including the next generation of infrastructure.

Over the past four years, the Institute for Sustainable Communities (ISC) has developed a methodology for creating shared learning environments, culminating in the organization of Sustainable Community Leadership Academies (SCLA) with the explicit purpose to accelerate urban climate adaptation and sustainability [10]. These intensive three-day academies bring together 10-15 multidisciplinary teams of 5 or 6 senior level practitioners and municipal government officials from cities and metropolitan areas. To date, teams from more than 400 cities have participated in these Leadership Academies, generating a wealth of results, tools, and networks that can accessed by anyone.

Seoul, Korea. Image © Scott Muller
This past April 15-17 in New Orleans, Louisiana, the Mississippi Sea Grant Consortium [11] and ISC kicked off an 8 month “Gulf Coast Community Resilience Program.” Utilizing ISC’s peer-learning methodology, leaders from 6 Gulf Coast communities created an informal network to advance and accelerate resilience. During the workshop, the practitioners shared experiences and tools, each identifying two to three key implementation ideas to apply in their communities over the summer. Tailored technical assistance within the informal network will help the participating Gulf Coast communities apply their resilience implementation ideas. In the fall, the same six communities will come together again for a follow-up Climate Leadership Academy (CLA) to share results and lessons learned, solidifying the informal network.

One highlight during the April CLA plenary was when Dr. Pam Jenkins of the University of New Orleans’ CHART [12] Program facilitated a community mapping clinic. Using a structured process, each community team identified coastal adaptation initiatives that led to “therapeutic” or “corrosive” communities. For example, after the recent Deepwater Horizon Oil Spill, factions with differing interests and opinions on financial settlement options led to a “corrosive” community atmosphere. On the other hand, after recent natural disasters, many teams sponsored “therapeutic” community celebrations that featured actionable dialogue on coastal adaptation strategies. As a result of the clinic, community leaders now have the tools to foster therapeutic approaches for the design of climate-adaptive infrastructure choices.

Internationally, another contemporary example of cities using peer learning to develop the next generation of climate-adaptive infrastructure is occurring in Southeast Asia. ASEAN [13] cities are some of the fastest growing in the world, and yet at the same time, some of the most vulnerable to climate change – forcing more adaptive approaches to urban development. As a result, city practitioners across the region are designing and building more resilient, ecologically integrated urban infrastructure, engaging their populations in inclusive decision-making, and collaborating across jurisdictions. These activities are generating innovations and investment opportunities that are shaping growth throughout the region. In a partnership between U.S. cities and ASEAN member states, ten teams of senior municipal officials from second- and third-tier cities will be participating in an SCLA on Urban Adaptation next August, [14] with a primary focus on sharing lessons of managing the social, political, financial and environmental risks of urban infrastructure. After the SCLA, a selection of cities will participate in partnerships with U.S. Cities to gain more exposure to innovative approaches, good governance tools and appropriate infrastructure technologies.

The results of ISC’s Leadership Academies across diverse cities and broad geographical range, support the research that concludes shared learning environments and exchange among practitioners can effectively overcome information overload as well as resource constraints, spawning innovation and greatly increase the likelihood of policy transfer [15]. What’s more, peer learning affords practitioners the ability to not only learn from their colleagues, but also to teach them – offering a sense of empowerment. Growing and strengthening the leadership capacity of these municipal leaders builds the overall profile of the profession – the resources generated from peer learning provides a core knowledge base for city sustainability practitioners and civil society organizations.

Going Forward

So while infrastructure is a key physical and technological asset of cities – representing critical capital investment – more important is the knowledge, shared ownership and collaboration that the next generation of urban infrastructure embeds in the Human Environment System. Successful public infrastructure is a legacy to the surmounted social dilemmas, collective action challenges and path dependencies resolved leading up to its construction.

The next punctuated equilibrium will not come from advanced or new technologies. Rather it will emerge from shared learning, multi-sector coalitions, integrated planning, public-private partnerships, the skillful advocacy of civil society and good governance. This is how to best reframe urban development and economic growth to include the capacity of the biosphere.

References
[1]  The next generation of infrastructure is defined by its service to urban sustainability.
[2]  Metropolitan Policy Program, Global Metro-Monitor 2012: Slowdown, Recovery, and Interdependence. (Report, Brookings Institution, 2012).  Accessible at http://www.brookings.edu/~/media/research/files/reports/2012/11/30 global metro monitor/30 global monitor.pdf
[3]  McKinsey Global Institute, 2012.  Urban world: Mapping the economic power of cities. (Report, McKinsey & Company, March 2011) Available at http://www.mckinsey.com/~/media/McKinsey/dotcom/Insights and pubs/MGI/Research/Urbanization/Urban world mapping economic power of cities/MGI_urban_world_mapping_economic_power_of_cities_full_report.ashx
[4]  Seto, Karen C., Burak Güneralp, and Lucy R. Hutyra. “Global forecasts of urban expansion to 2030 and direct impacts on biodiversity and carbon pools.”Proceedings of the National Academy of Sciences 109, no. 40 (2012): 16083-16088.
[5]  Wackernagael, M. et. al. 2002. “Tracking the ecological overshoot of the human economcy.” Proceedings of the National Academy of Sciences. July 9, 2002 vol. 99 no. 14
[6]  OECD, Strategic Transport, Infrastructure Needs to 2030.  (Report, OECD, March 2012) ISBN 978-92-64-16862-6.
[7]  Thiam, Tidjane -Chairman. High Level Panel on Infrastructure, Recommendations to G20 (Final Report. 26 October 2011).
[8]  Brand, Stewart. Whole earth discipline; an ecopragmatist manifesto. Atlantic Books, 2010.
[9]  Marsden, Greg, Karen Trapenberg Frick, Anthony D. May, and Elizabeth Deakin. “Bounded rationality in policy learning amongst cities: lessons from the transport sector.” Environment and Planning A 44, no. 4 (2012): 905-920.
[10]  “Sustainable Communities Leadership Forum,” Institute for Sustainable Cities. Accessed 5/22/2013 at http://sustainablecommunitiesleadershipacademy.org/
 [11]  NOAA, “Home” Mississippi-Alabama Sea Grant Consortium. Accessed 5/22/2013 at http://sustainablecommunitiesleadershipacademy.org/
[12]  “Center for Hazards Assessment, Response & Technology,” University of new Orleans. Accessed 5/22/2013 at http://sustainablecommunitiesleadershipacademy.org/
[13]  Association of South East Asian Nations
[14]  “A Climate Leadership Academy on Urban Adaptation: From Risk Barrier to Results,” ICMA, CityLinks and USAID. Accessed 5/22/2013 at http://icma.org/en/cl/news/events/climate_leadership_academy
[15]  McCann, Eugene. “Urban policy mobilities and global circuits of knowledge: toward a research agenda.” Annals of the Association of American Geographers 101, no. 1 (2011): 107-130.
http://landscapeurbanism.com/article/the-next-generation-of-infrastructure/





Wednesday, November 27, 2013

Biophilic Cities: What Are They?

Central Park in New York City, a world landmark of biophilia and nature preservation.
 
Biophilia is a term popularized by Harvard University myrmecologist and conservationist E.O. Wilson to describe the extent to which humans are hard-wired to need connection with nature and other forms of life. More specifically, Wilson describes it this way: “Biophilia…is the innately emotional affiliation of human beings to other living organisms. Innate means hereditary and hence part of ultimate human nature.” (Wilson, 1993, p.31). To Wilson biophia is really a “complex of learning rules” developed over thousands of years of evolution and human-environment interaction.
Evidence of the emotional and psychological benefits of nature is mounting and impressive (research shows its ability to reduce stress, to aid recovery from illness, to enhance cognitive skills and academic performance, to aid in moderating the effects of ADHD, autism and other child illnesses). Recent research suggests even that we are more generous in the presence of nature; all these values are in addition to the immense economic value of the ecological services provided by natural systems.

Support for the practice of biophilic design has been growing and there are now many exemplary examples of buildings that seek to integrate natural features and qualities. We recognize the need for biophilic workplaces, for healing gardens and spaces in hospitals, and for homes and apartments that provide abundant daylight, natural ventilation, plants and greenery. Less attention, however, has been focused on the city or urban scale, despite the fact that the planet continues an inexorable trend in the direction of urbanization. Urban residents need nature more than ever, and much work is needed to find creative and effective means for incorporating it into urban environments.

It is likely that the benefits of close contact with nature are deeper and even more profound, and the potential to make a difference by integrating nature directly into our lives, even greater than we realize. Nature ought not to be an afterthought, and ought not to only be viewed in terms of the (considerable to be sure) functional benefits typically provided (benefits of trees, green rooftops, wetlands for managing stormwater, for mediating air and water pollutants, for addressing urban heat island effects, and so on). The elements of a deeper concept of integrating nature into everyday living include a recognition of some of the following:
Important Ties to Place. There are considerable place-strengthening benefits and place-commitments that derive from knowledge of local nature; from direct personal contact; enhanced knowledge, and deeper connections = greater stewardship, and willingness to take personal actions on behalf of place and home;

Connections and Connectedness. Caring for place and environment, essential for human wellbeing and in turn essential ingredient in caring for each other;

A Need for Wonder and Awe in Our Lives. Nature has the potential to amaze us, stimulate us, propel us forward to want to learn more and understand more fully our world; Nature adds a kind of wonder value to our lives unlike almost anything else;

Meaningful Lives Require Nature. The qualities of wonder and fascination, the ability to nurture deep personal connection and involvement, visceral engagement in something larger than and outside oneself, offer the potential for meaning in life few other things can provide;
Urbanists and city planners have special opportunities and unique obligations to advance biophilic city design, utilizing a variety of strategies and tools, applied on a number of geographical and governmental scales. The agenda is one that must extend beyond conventional urban parks, and beyond building-centric green design. It is about redefining the very essence of cities as places of wild and restorative nature, from rooftops to roadways to riverfronts. It is about understanding cities as places that already harbor much nature and places that can become, through bold vision and persistent practice, even greener and richer in the nature they contain.
 
What a biophilic city is or could be is an open question, and it is hoped that this website will help to stimulate discussion of this. As a tentative starting point I offer some of the following as key qualities of biophilic cities:          

Biophilic cities are cities of abundant nature in close proximity to large numbers of urbanites; biophilic cities are biodiverse cities, that value, protect and actively restore this biodiversity; biophilic cities are green and growing cities, organic and natureful;

In biophilic cities, residents feel a deep affinity with the unique flora, fauna and fungi found there, and with the climate, topography, and other special qualities of place and environment that serve to define the urban home; In biophilic cities citizens can easily recognize common species of trees, flowers, insects and birds (and in turn care deeply about them);

  • Biophilic cities are cities that provide abundant opportunities to be outside and to enjoy nature through strolling, hiking, bicycling, exploring; biophilic cities nudge us to spend more time amongst the trees, birds and sunlight.

  • Biophilic cities are rich multisensory environments, the where the sounds of nature (and other sensory experiences) are as appreciated as much as the visual or ocular experience; biophilic cities celebrate natural forms, shapes, and materials;

  • Biophilic cities place importance on education about nature and biodiversity, and on providing many and varied opportunities to learn about and directly experience nature; In biophilic cities there are many opportunities to join with others in learning about, enjoying, deeply connecting with, and helping to steward over nature, whether though a nature club, organized hikes, camping in city parks, or volunteering for nature restoration projects.

  • Biophilic cities invest in the social and physical infrastructure that helps to bring urbanites in closer connection and understanding of nature, whether through natural history museums, wildlife centers, school-based nature initiatives, or parks and recreation programs and projects, among many others;

  • Biophilic cities are globally responsible cities that recognize the importance of actions to limit the impact of resource use on nature and biodiversity beyond their urban borders; biophilic cities take steps to actively support the conservation global nature;

These are but a few of the ways a city might be seen as biophilic. What do you think? Are there other ways, and other important qualities or dimensions not listed above?

http://biophiliccities.org/biophiliccities.html

Tuesday, November 26, 2013

Arizona Stands Up for Solar Rights


 By Annie Lappe
 
In a  victory of David vs Goliath proportions, policymakers in Arizona stood up for its citizens by rejecting an attempt from the states largest utility to squash rooftop solar. Five months after Arizona Public Service (APS) sought approval to slap hefty new fees on its customers that go solar, the Arizona Corporation Commission (ACC) voted yesterday to uphold Arizona solar savings and energy choice. While the vote was clearly a win for Arizonans, the ACCs approval of a small but troubling new fee makes it clear that there is a significant amount of education left to be done regarding distributed solars tremendous value.

Driving this proposal was that fact that solar is offering customers an affordable new energy option, and Arizonans are increasingly choosing to generate their own power from the sun. Rather than working with its customers and meeting this new market demand, APS attempted to dig in and regulate against competition to maintain its monopoly hold on electricity.

APS Proposal Denied

APS had proposed a new $50-100 monthly charge for solar customers, a discriminatory fee that would have wiped out any savings these customers would currently receive from their solar investment. APS justified the solar fee by saying that net metering a program that ensures solar customers receive full retail credit for power they deliver to the grid for their neighbors to use is a bad deal for Arizonans but thats just not true: private investment in reliable, local power generation benefits all ratepayers. Full retail net metering credit is a simple and proven way for customers and utilities to assign value to that power.

A study conducted this year for SEIA showed that these net metered systems actually deliver much more: $34 million in annual net grid benefits for APS customers alone. Thats before accounting for the social and environmental benefits: cleaner air and thousands of local jobs. APSs proposals were clearly not grounded in a fair accounting for DG solars real value, and our allies argued strongly in favor of undertaking that fair accounting in the appropriate venue: the next rate case.

Despite millions of dollars on spent on a misleading campaign by the utility and its proxies, public outcry against the APS proposal was overwhelming. A poll conducted last week found that, even after months of being blanketed by utility ads, a whopping 81% reject APSs solar fee and 77% would be less likely to vote for a candidate who ends solar savings. Over the course of this long campaign, more than 30,000 Arizonans emailed the ACC in support of rooftop solar.

Arizonans Show Up to Support Rooftop Solar

That support was demonstrated in person earlier this week when 1,000 Arizonans gathered in front of the ACC this week to protest APSs proposed fee. Inside a steady stream of about 100 citizens solar workers, solar customers, non-solar customers, environmental advocates, retirees, veterans, even one passionate 11-year old girl urged the Commissioners to stand up against the utility for the good of Arizonans. Yesterdays vote is a resounding demonstration that the peoples support of solar trumps corporate money. It showed just how out of step APSs anti-solar efforts are with the needs and demands of its own customers, and we were pleased to see Commission acting on behalf of the public they serve.

Interim Fixed Fee Adopted

Its important to note that while the most egregious aspects of APSs proposal were soundly rejected, the Commission did vote by a 3-2 vote to implement a relatively small but still unjustified new fixed fee of $0.70 per kilowatt as a monthly charge for all new residential solar customers (i.e. if you have a 5kW system on your house, you would pay $3.50 a month). The vote broke down as follows: Commissioners Stump, Bitter-Smith and Bob Burns voted yes, and Commissioners Pierce and Brenda Burns voted no, arguing that the fixed fee was too low.

The fee will be collected through the Lost Fixed Cost Recovery (LFCR) adjustor mechanism. APS is already using the LFCR to collect funds from customers to account for the fact that the Company is losing money when customers invest in energy efficiency or DG solar.

The new fixed charge will stay in place until APSs next general rate case, which must be filed in June 2015. However, the Commission did add a clause that allows the ACC to periodically adjust this charge in any APS LCFR reset proceeding, which happen on an annual basis. During the next rate case, net metering will be addressed in more detail.

Existing solar customers will not be assessed this charge, and will be grandfathered under their current rate structure arrangement, at least until the next rate case, though verbally several Commissioners expressed intent that they would be grandfathered from the charge in perpetuity. However, all rooftop solar customers, including existing customers, will soon need to sign a disclaimer that acknowledges that rates can change in the future.

Workshop Process Established

In the interim between now and the next rate case, the Commission has also decided to hold a series of workshops to determine the true costs and benefits, and any associated cost shift, of net metering.  Vote Solar looks forward to participating in this process and making sure that individual solar investment is properly valued.

We strongly disagree with the Commission that net metering represents a cost to non-solar ratepayers, and we hope through the workshop process facts can be brought to the table to dispel this myth once and for all. Rooftop solar is helping Arizona families, schools and businesses take charge of their power supply and their electricity bills like never before. This private investment is helping build a cleaner, safer and lower cost energy supply for all of us.
 

 

Saturday, March 16, 2013

Net Zero Water Introduction

Learn basic technical and economic information on the design and performance of a fully integrated site and building water management system based on the "Net Zero Water" concept by Jeffrey L. Bruce FASLA, LEED, ASIC, GRP. This approach promises to significantly reduce the consumption of potable water in buildings, reduce discharge to municipal waste water systems, and save on municipal energy by reducing the amount of potable water treated at municipal facilities.


http://www.youtube.com/watch?v=sJXkNDPg2Xo&feature=g-user-u

Beneficial Use: Toward Balancing America's (Sediment) Budget

Newly created marshes near the mouth of the Mississippi River, West Bay, Louisiana


Of all the anthropogenic transformations occasioned upon the North American continent, few garner less attention than the shift in the dynamics of sediment transport: in essence, in the large-scale movement of huge quantities of earth. Yet the impacts of this profound alteration are all around us — literally, around the North American littoral — and what is at stake is nothing less than the survival of coastal places and spaces, and the peoples and processes that depend on them. Some background, both historic and technical. For millennia the movement of sediment was governed by natural processes; wind and water would erode and mobilize mineral particles across the topographic surface, and then deposit a share of these particles into the currents of rivers. The coarsest sediments would settle out upstream, while the finer particles would either disperse along the rivers' broad meander belts, forming rich riparian zones in alluvial valleys, or else would move downstream suspended in the water column or tumbling along in the bedload. As the rivers disembogued into the seas, their currents would slow, lose kinetic energy and dump their sediment load at the continent’s edge. There, the billions of tons of sand, silt and clay particles would accumulate in the form of deltaic lobes and coastal wetlands, or get swept sidelong by offshore currents to accrete on beaches, dunes, salt marshes and barrier islands along curving bights. The pedological loss of the continent’s interior thus begot the geomorphological and ecological gain of its edge. The resulting littorals — including the delta of America's greatest river — have long ranked among the most productive environments for an extraordinary range of life forms, including humans. Fast-forward to modern times, and much has changed.

We came to view the natural tendency of rivers to store surplus water laterally as an intolerable problematic — “flooding,” we called it — and so we strait-jacketed the channels within levees and floodwalls. We denuded forests, broke prairie sod, replaced biodiversity with monoculture, and augmented the fluvial and aeolian erosion of fertile topsoil. We routed water from wet to dry places via aqueducts, canals, pipelines and reservoirs, to be used for hydroelectricity, irrigation, municipal and industrial purposes, and upon these systems we built the world’s largest economy. Getting this abundance to market required efficient navigation, and that meant straightening and stabilizing key arteries like the Mississippi and its tributaries, building locks and canals to allow vessels to step-ladder upriver, and dredging constantly to maintain requisite depths. And on deltaic plains such as that of the Mississippi River in southern Louisiana, we scored and scoured the landscape to enable vessels to call more efficiently at ports, and to extract fossil fuels more effectively.

America’s sediment budget did not get knocked off balance by sinister or incompetent forces, but rather as an unforeseen consequence of promethean engineering projects that have produced great wealth for American society for generations. No more can we decommission dams and locks for the sake of increasing sediment supply than we can remove levees from the lower Mississippi for the sake of fast-tracking coastal restoration; millions of Americans rely on these engineering structures, and they are here to stay. Nevertheless, we should recognize that they come with a cost, and strategically augmenting the sediment load of rivers as they flow to coasts, particularly by maximizing the beneficial use of dredged sediments, is a good way to reduce that cost. Human intervention skewed North America’s sediment dynamics, and only human intervention can rebalance them.

Read more:
http://places.designobserver.com/feature/beneficial-use-sediment/37651/