Archive

Tag Archives: green infrastructure


At a recent conference I was listening to a presentation by the Army Corps of Engineers explaining the investments made over the last 80 years.  Subsequent presentations discussed that the need to reinvest in infrastructure appears to be about 3.6% of infrastructure value per year, but that the US is spending about 2.4%.  The best condition of our infrastructure was in the 1980s, but decreases in reinvestment due to funding limitations has caused an ongoing decline in infrastructure value, which is why the ASCE report cards show most of our infrastructure at the D or D- level.  It is getting old and it needs repair and replacement.  You would rarely buy a house, never maintain it, and expect it to live in it without problems for 50 years.  Roofs leak, pipes need replacing, mechanical equipment, lights and appliances fail.  It is the cost of owning a home. You have to update.  Most times the new equipment is more efficient that the old stuff, saving money.  So why do we do this with infrastructure?

More interesting was the response to how some of these agencies may deal with this backlog of deferred maintenance.  So far I have heard the Corps, state transportation agencies, state land agencies and another federal government say that they are figuring out means to prioritize the assets and dispose of those not needed.  So let’s see how that would work and I kid you not, these are suggestions:

  •          Abandon state roadways and let local governments deal with them.  Of course these are roads that are challenged – like they flood constantly and the cost to raise them is cost prohibitive, but the city has development along the corridor
  •          The state has low value wetlands they will donate to the underlying county – not that you can do anything with this land- it is not developable, but needs to be monitored and maintained
  •          There is a waterway that has leaking dikes but serves very few people.  Let’s give it to the local community as they are the only ones who use it.
  •          We have monitoring equipment, but it really provides more information locally that regionally, so let’s give it to them 

Hey I like the idea of giving, but seriously, how does the “recipient” deal with this problem.  The low value assets are low value because they serve limited people and are deemed to have little economic or useful value or are too expensive to maintain.  So what does the recipient do with it?  They do not have nearly the resources that larger governmental entities have, and if the big guys cannot find the money, will locals?  Are we just kicking the problem to the next guy?  Sounds like used car sales to me.

It sounds suspiciously like the argument I have heard several times from a city manager who talked about cutting the size of local government, only what he did was contract with other entities to do the services, which means cuts in employees for his city, but the cost is just transferred to another entity.  The rate/taxpayers will foot the bill unless the service is completely discontinued.  In his case, they all paid more.

The State of Florida and the federal government have both cut employees and both contract heavily for services that never used to be contracted.  There is a whole industry of contracting for government work that used to be done in-house.  In other words, they privatized portions of the operations.  But did the cost of government decrease in either case?  No. 

So going back to the initial question – will governments abandon infrastructure?  The answer appears to be yes, but the problem is that that infrastructure IS being used by people so the reality of full abandonment is impossible.  The result will be that underlying local entities will be stuck with the bill.  Planning is needed.  “Fail to plan = Plan to fail” as my friend Albert says.  We need to identify where these “gifts” may occur and identify a means to deal with the inherent obligation that goes with them.  For water and sewer utilities, waterways and roadways are of particular concern, but so could watersheds and well sites. 

 


In the field of engineering, the concept of sustainability refers to designing and managing to fully contribute to the objectives of society, now and in the future, while maintaining the ecological, environmental, and economic integrity of the system.  Most people would agree that structures such as buildings that have a lifespan measured in decades to centuries would have an important impact on sustainability, and as such, these buildings must be looked at as opportunities for building sustainably. When people think about green buildings, what generally comes to mind is solar panels, high efficiency lighting, green roofs, high performance windows, rainwater harvesting, and reduced water use.  This is true, but building green can be so much more.

The truth is that the built environment provides countless benefits to society; but it has a considerable impact on the natural environment and human health (EPA 2010). U.S. buildings are responsible for more carbon dioxide emissions annually than those of any other countries except China (USGBC 2011). In 2004, the total emissions from residential and commercial buildings were 2,236 million metric tons of carbon dioxide (CO2), more than any other sector including the transportation and industrial sectors (USGBC 2011). Buildings represent 38.9% of U.S. primary energy use,72% of U.S electricity consumption (and 10% worldwide), 13.6% of all potable water, and 38% of all CO2 emissions (USGBC 2011).  Most of these emissions come from the combustion of fossil fuels to provide heating, cooling, lighting, and to power appliances and electrical equipment (USGBC 2011). Since buildings have a lifespan of 50 to 100 years during which they continually consume energy and produce carbon dioxide emissions, if half of the new commercial buildings were built to use only 50 percent less energy, it would save over 6 million metric tons of CO2 annually for the life of the buildings. This is the equivalent of taking more than one million cars off the roads each year (USGBC 2011).

The United States Green Building Council (USGBC) expects that the overall green building market (both non-residential and residential) to exceed $100 billion by 2015 (McGraw Hill Construction 2009).  Despite the economic issues post 2008, it is expected that green building will support 7.9 million U.S. jobs and pump over $100 million/year into the American economy (Booz Allen Hamilton, 2009). Local and state governments have taken the lead with respect to green building, although the commercial sector is growing.

Green building or high performance building is the practice of creating structures using processes that are environmentally responsible and resource efficient throughout a building’s life cycle, from site to design, construction, operation, maintenance, renovation, and deconstruction (EPA 2010). High performance building standards expand and complement the conventional building designs to include factors related to: economy, utility, durability, sustainability, and comfort. At the same time, green building practices are designed to reduce the overall impact of the built environment on human health and use natural resources more responsibly by more efficiently using energy, water, and other resources, while protecting occupant health and improving employee productivity.

High Performance Buildings are defined by incorporating all major high performance attributes such as energy efficiency, durability, life-cycle performance, natural lighting, and occupant productivity (EPA 2010). High performance buildings are constructed from green building materials and reduce the carbon footprint that the building leaves on the environment. A LEED-certified green building uses 32% less electricity and saves around 30% of water use annually (USGBC 2011). Building owners know that there is a return on investment of up to 40% by constructing a green building as a result of savings to energy and water (NAU 2012).

The cost per square foot for buildings seeking LEED Certification falls into the existing range of costs for buildings not seeking LEED Certification (Langdon, 2007).  An upfront investment of 2% in green building design, on average, results in life cycle savings of 20% of the total construction costs – more than ten times the initial investment (Kats, 2003), while building sale prices for energy efficient buildings are as much as 10% higher per square foot than conventional buildings (Miller et al., 2007). At the same time, the most difficult barrier to green building that must be overcome includes real estate and construction professionals who still overestimate the costs of building green (World Business Council, 2008).

New data indicates that the initial construction cost of LEED Certified buildings can sometimes cost no more than traditional building practices.  A case study done by the USGBC showed that the average premium for a LEED certified silver building was around 1.9% per square foot more than a conventional building.  The premium for gold is 2.2% and 6.8% for platinum.  These numbers are averaged from all LEED-registered projects, so the data is limited, but demonstrates that in some cases it does not cost much extra to deliver a LEED certified project which greatly improves the value of the building and lowers operating costs (Kuban 2010).  The authors’ experience with the Dania Beach nanofiltration plant indicated the premium was under 3% to achieve LEED-Gold certification compared to standard construction.

So the question is, why don’t we see more green buildings?  We know water plants can be green (Dania Beach Nanofiltration Plant), but that was the first nanofiltration plant in the world to be certified Gold.  The SRF programs prioritize green infrastructure – so why do more people not pursue them?  It may be an education process.  Or maybe the market just has not caught up.  CIties and states are leading the way here.  Utilities may want to look at this as well.Image