Thursday, September 13, 2012

Sustainability Toolkit for Family Friendly Cities

Our slides for "Sustainability Toolkit for Family Friendly Cities" presented at the Downtown Colorado Inc conference September 13, 2012 are located at:\SustainablityToolkitFamilyFriendlyCities.pdf (11M)

Outline of presentation:
  • Human Sustainability Introduction
  • Motivation for Multi-Generational Planning
  • 12 Guiding Principles for Family Friendly Cities
  • Mapping of City Family, Business, and Resource Centers
    • Case Example for Littleton, CO
    • Case Example of Mapping for Denver Metro with Light Rail to Connect Family and Business Centers
  • Sustainability Toolkit:
    • Social
      • Multi-Generational Public Spaces
    • Housing
      • Multi-Generational Housing
      • Affordable Eco-Friendly Living
    • Mobility
      • Multi-Modal Streets
      • Personal Transportation Hubs
    • Education
      • Purposeful Education
    • Universal Resources
      • More Land for Living and Food
      • Water Scarcity Leads to Abundance
Each Toolkit item includes a description with design considerations, benefits for various stakeholders, and case studies.

Charging Up Your City

6 vehicle spaces converted to 12 LSV spaces with a new picnic area

Charging Up Your City

Do you want to charge up your city? The following are some thoughts for charging up your community's excitement level, charging up your electrical devices, and charging up your economy.

The Denver Post June 24, 2012 article, “Getting a charge out of new law,” described a new state law effective in August. This law will allow anyone to sell electricity. One potential application is for electrical charging stations spread throughout the city. The law is aimed at charging electric vehicles, but the charging stations could be used to charge any electrical device. Consider for example, a charging station at a park. The same station could be used to charge an electric vehicle as well as a laptop, cell phone, or tablet.

For the owner of the charging station, this could be an additional source of income, be it the government entity that owns the park or a business owner with some unused rooftop space for solar panels.

The electric vehicle owners will have convenient, reasonably priced electricity to reduce "range anxiety" concerns. Refill costs may be “$4 instead of $40 or more for a tank of gas.” With the reduced emissions from the electric vehicles, everyone will benefit from the cleaner air. This could be a win-win for all stakeholders.

As much potential as the reselling of the electricity holds, this is only the tip of the iceberg, so to speak. The big impact could come from combining the charging stations with low speed vehicles (LSVs).

Of the many types of vehicles permitted on the road today in Colorado, low speed vehicles could be an up and coming mode of transportation. LSVs include neighborhood electric vehicles and golf cars (golf carts with head lights and brake lights). LSVs are already permitted on roads with a speed limit of 35 mph or less and can cross roads with a higher speed limit at intersections.

For car drivers, the LSVs are significantly lower cost. For senior drivers, they are also safer to operate. Thus, LSVs can provide mobility options for later in life.

The real potential of LSVs is the fact that the vehicles are one forth the size of traditional gas powered motor vehicles. Thus, if there were enough users of LSVs, the city could restripe a few parking lots and get a 4 fold increase in parking. Or, some of the space could be reclaimed for non-parking uses. For example, consider the economic impact of this reclaimed land used for additional outdoor seating at a restaurant. Developers could use this extra space for a larger building footprint, which may translate to more sales tax revenue or property tax revenue.

There are a number of actions that planners can take:

1)    Promote the use of LSV noting the benefits such as lower cost, safer, lower emissions, smaller size, and more non-parking space for developers/landowners.

2)    Make sure that all zoning and ordinances allow for the charging stations and solar panel installation.

3)    Make sure that parking requirements are properly adjusted for LSVs.

4)    Create a connectivity map of the city noting key destinations such as stores, parks, schools, and residences and roads with speed limits <= 35 mph. If the key destinations are not connected, see if there is an easy way to add the missing connectivity such as changing a speed limit from 45 to 35 mph.

5)    Determine how to best reallocate the reclaimed land to benefit the city and its residents.

NOTE: This was also published in APA Colorado Q3 newsletter

Wednesday, September 5, 2012

Roofs as Economic Generators

Creating and improving the economic potential for communities is always beneficial, but especially with the current great recession. These two areas can be addressed by looking up. As an exercise, go to a tall building in the city, look at a Google maps view of the city, rent a hot air balloon ride, or in some way look down at your city. In most cases, there will be a number of big flat roofs. These roofs are a missed opportunity for economic growth of the community.

Some potential economic generators for rooftops include:
  • PV Solar Panels
  • Green Roof
  • Edible Green Roof
The PV solar panels would, somewhat obviously, generate electricity that the building owner can use to reduce their electric bill. In the extreme case, there will be a surplus of electricity that the building owner can sell back to the local utility company and actually make money instead of just saving money.

The state of Colorado recently passed a law making it much easier for non-utility companies to resell electricity. For example, the building owner could set up electric vehicle charging stations on their property and make some income from reselling the electricity.

New Jersey and California are using public-private partnerships to get solar panels installed, for example, on school rooftops.

If enough rooftops install solar, and the region is getting close to exceeding current electric plant capability, these rooftop electric generators could prevent the region from having to invest in a new power plant, thus saving everyone an electric rate increase to pay for the new plant.

In addition to reducing urban heat islands, thereby making the city more people friendly, green roofs can significantly reduce the building's heating and cooling needs. One on-line estimator provides some estimates for the cost savings. Some example yearly cost savings:
  • Arizona State Capital Building = $24,266
  • The Pentagon = $1.1 million
  • Walmart SuperCenter in Bentonville, Arkansas = $179,300
Hopefully, this saved money will work its way back to the city and the residents. The concept can also be used for city buildings and the saved money can be used elsewhere within the city budget.

Extending the heating and cooling benefits of green roofs to edible green roofs would have the additional benefit of increasing local jobs as well as local food. Some interesting examples of large rooftop gardens are coming from New York.

Rooftop farms are in the midst of a boom here in New York City
Driving that boom – at least in part – is New York City’s Zone Green. Proposed amendments to Gotham’s zoning code that continue an inexorable march through the approval process, Zone Green would permit solar panels, green roofs, storm water systems, skylights and other green features on New York City buildings, despite existing restrictions within the 1961 code. Specifically with respect to rooftop farms, Zone Green would allow a waiver of floor area and height limits for greenhouses on top of non-residential buildings.

A second rooftop garden example comes from Brooklyn. This one is a hydroponics greenhouse on top of a warehouse rooftop that is harvesting 365 days a year.

… hydroponics allow the urban farm to produce about 10,000 heads of lettuce a week – roughly 100 tons a year.  The controlled environment agriculture uses 10 times less water and 20 times less land than traditional harvesting methods.

“We’re producing crops and delivering it within 24 hours, definitely making it the freshest product on the market – the shelf life is passed on to the consumer,” said Nelkin. “By being the freshest, it’s also the most flavorful and nutritious.”

Another agricultural example comes from Denver. The Brown Palace hotel in downtown Denver has added 4 bee hives and 65,000 bees to their roof and "can produce upwards of 150 pounds of harvestable honey every summer". "Marcel Pitton, managing director of The Brown Palace, said the honey is like 'liquid gold' for the hotel. The honey is used in the restaurant kitchen and as the basis for a lavender honey soap and a local beer, made with the Wynkoop Brewing Company." The article states that the beekeeping program started "three years ago, after the city passed an ordinance in 2008 allowing hobbyists to own hives." Thus, emphasizing the importance of planners working with the city to make the conditions appropriate for roofs to become economic generators.

Rooftop gardening can be practical with the only change to the roof being the addition of light weight planters. In 2011, "450 urban agriculture planters were installed on the roof of the Palais des congrès, allowing three partner restaurants (Crudessence, the Palais’ catering service, and Intercontinental hotel) to learn more about the basics of market gardening in cities and offer a wide variety of produce on their menu for those who want to eat locally and in season." (Source article)

As one example, Biotop has an edible roof integrated system for growing food. It is lightweight and can be installed on an existing roof without structural modifications. The Montreal Convention Center installed this system over the summer during the Ecocity World Summit 2011. The food grown went to local restaurants.

Here are 7 brainstorm ideas for how cities can help to turn the city's unused rooftops into economic generators:
1)     Comprehensive Plan and Sustainability Plan
2)     One Page Briefs
3)     Free Advertising
4)     Zoning and Ordinances
5)     Open Space Reduction for Green Roofs with Additional Credit for Growing Food on Roof
6)     Make it Easy
7)     (Last Resort) Unused Rooftop Tax

First, make sure that the city's Comprehensive and Sustainability Plans include using the rooftops in creative ways, so as to encourage economic benefit to the building owner as well as the city and its residents.

Second, create one page briefs. These would be short educational brochures to inform the building owners of the potential cost savings or income potential from different roof uses. Logistic, cost, and other "barriers to entry" should also be noted to help the building owner decide if one of the options is not appropriate for their building.

Third, do some free advertising for building owners that implement a rooftop economic generator. For example, highlight the business on the city web site or in the local newspaper. Use the company as a case example highlighting what it took the company to implement the economic generator. This could be framed as this month's "Rooftop Economic Generator Winner". Over time, revisit the company and have another article, or award, highlighting the economic benefits that the company has generated from the rooftop effort.

Forth, make sure that all zoning and ordinances allow these economic generators on the roof. For example, see New YorkCity’s Zone Green above. Also, for the edible rooftops, allowing food stands to be set up around the city would help the food growers to sell the produce to residents. Wheat Ridge, CO claims to have one of the most liberal food stand policies in the U.S., allowing food stands almost anywhere: "This ordinance updated the city's regulations so that community garden (under the category "urban gardens"), farmer's markets, and produce stands are now allowed in any zone district."

Fifth, which is a subset of Zoning and Ordinances, is to allow green roofs to count towards open space requirements. This will give developers more ground space for development, increasing their profit. This should also increase city tax revenue (sales tax for increased business size, increased property tax from larger building/more housing units).

Sixth, make it easy. For the most part, the building owner is most likely not concerned about trying to run a second business. A big box chain store will not want to change their focus. A small mom and pop business may already be stretched on available time and brain power. To overcome this, the city can do some of the leg work for the building owners. For example, consolidate all needed forms and steps into a pre-packaged form. Consider the case of an edible green roof, the city can have on hand a leasing contract that the building owner can use with the farmer that wants to lease the roof space. The building owner can then use these forms verbatim, or modify them as desired. As a case study, look at Santa Cruz. They have 7 pre-approved ADU packages that, if selected by the home owner, allows for shortening the building approval process.

Seventh, create a new "unused rooftop" tax. This should only be used if all other means to encourage effective rooftop uses fails. The concept for this tax is that if a commercial building owner with a flat roof does not implement an approved economic generator use for a "sufficient" percentage of their roof, than the building owner has to pay a tax for this unused space. If the building owner does implement an approved use for enough of their roof, then there is no tax.

By looking up, cities can "create" additional space to plan for the future. With some creating thinking, the unused space rooftops in the city can become an economic generator.