Tag Archives: Sustainability

Housing Affordability – Put a Bern on It

April 14, 2016

Bernie Sanders

Bernie Sanders speaking at the Moda Center on Aug. 9, 2015 to a crowd of 28,000. Most people don’t know that he helped to found one of the most evolutionary housing organizations in the nation. Photo by PlanGreen

Bernie Sanders is a housing affordability hero to a group of people in Burlington, VT.  As Mayor of Burlington, Bernie was able to get the city to seed the founding of the Burlington Community Land Trust (BCLT) with a $220,000 grant. Sanders was at first skeptical about the limited equity concept the BCLT promoted. But he came to see the Community Land Trust (CLT) as both a means of achieving permanent affordability as well as a new model of land tenure for America.  Now he admits that helping to found the BCLT was “the best thing I ever did as Mayor.”

Burlington Community Land Trust has since expanded into three counties around Burlington (Chittenden, Grand Isle and Franklin) and changed its name after its merger with an affordable rental non-profit in 2006 . It’s now the Champlain Housing Trust. With over $309 million in assets, CHT is the largest CLT in the nation. Its 2015 Annual Report shows that it owned 389 buildings (2227 units) of affordable rental housing, 33 commercial/industrial buildings and the land under 570 single family shared-equity homes. And it’s adding more units every year. This year, they are in process of developing another 160 permanently affordable units in a larger 700 unit development on the Burlington waterfront. In all, they control an impressive 7.6% of the Burlington area’s total housing stock.

How it works:

Champlain Housing Trust Image

Champlain Housing Trust is the largest Community Land Trust in the nation. It enables housing to be kept permanently affordable by holding title to the land under it. Image from CHT 2014 Annual Report.

Community Land Trusts are nonprofit organizations, with a board composed of representatives of the public, members of professions with technical expertise, and the tenants of the CLT. The CLT obtains land through a number of means (purchase, donations,  foreclosures, etc.) and removes it from the private, commodity speculative market. If there are not already buildings on the land, the CLT may build and either lease or sell the buildings with restrictive covenants. The CLT retains ownership of the land and sets a formula for shared equity as the properties appreciate. This formula is applied when the home on the property is sold.

As explained by Daniel Fireside writing in Dollars & Sense:  When a normal home is offered for sale on the usual terms, it does virtually nothing to make the overall housing market more affordable. A land trust home, by contrast, creates a permanently affordable property because the land it sits on is removed from the speculative market. Most of the appreciation is retained by the housing trust (and by extension, the community), rather than the individual. In this way the trust model creates a bridge between purely public and purely private property.

This limited equity model still allows a reasonable return. In Burlington, the 233 homeowners who have resold a CHT home have realized, on average, a 31% annualized IRR [internal rate of return]!  The model also allows the CLT to intercede in the case of a foreclosure. A study by the Lincoln Institute of Land Policy showed that, as of 2010, homeowners within a land trust were 10 times less likely to default on their homes than their private-market counterparts.

A New Model of Land Tenure

O'dell Apts So Burlington

Champlain Housing Trust holds the land under O’Dell Apartments in So. Burlington in permanent trust. Renters get a say in policies. Photo from Google Maps w/assistance from CHT’s Chris Donnelly.

The original impetus behind the CLT movement was to create a new institution to keep housing permanently affordable.  The first people I ever met living in a CLT in the 1980s were NOT low-income, rather middle-income professionals who saw the CLT as a better way to live while also making a statement that we need a new model of land tenure. I believe the CLT is the best tool for transforming our housing system.  By taking the land under housing off the private, commodity, speculative market, it helps to change the concept of housing from a commodity to be bought and sold for a profit. Instead it encourages us to see it as a social good that everyone needs and deserves.  Involvement in the CLT also gives both renters and homeowners a say in how properties are managed.  And it gives them a sense of community with all members of the CLT.

CLTs can work in both hot and cold markets.  John Davis, former Chair of the Board of the Institute for Community Economics¹ and now a CLT consultant, says in an interview he did for Democracy Collaborative with Steve Dubb in 2011:

Most housing and community development programs in the United States have been designed as if there is no business cycle. What community land trusts are particularly good at is preventing the loss of homes, homeowners, and public investment at both the top and the bottom of the business cycle. We run counter to the threats and dangers that a fluctuating economy imposes on low- and moderate-income people.

Proud Ground – The Portland Region’s Community Land Trust

Multifamily Woolsey Corner in the New Columbia area of Portland was developed as a Community Land Trust by Proud Ground utilizing Orange Splott as its builder. Photo courtesy of Orange Splott.

Multifamily Woolsey Corner in the New Columbia area of Portland was developed as a Community Land Trust property by Proud Ground utilizing Orange Splot as its builder. Photo courtesy of Orange Splot.

Proud Ground (a merger of Portland Community Land Trust and Clackamas Community Land Trust). It currently focuses on helping a limited subset of moderate-income people get into homeownership. (See Oregonian OpEd: One Way to Turn Moderate Income Portlanders into Homeowners by PG’s Diane Linn and Roger Henshaw). It has partnered with Bank of America to do an important study, Solving the Affordable Homeownership Gap that gives data about an out-of control housing market that is has largely been taken over by an investor class. To me, this study helps to demonstrate how unsustainable the current housing system is and why we need more systemic solutions than simply getting a few more people into such an anxiety-inducing system.  Nonetheless, Proud Ground has many ways to get involved in making housing more permanently affordable on its website.

Achieving Housing Affordability for the Long-Term

To achieve real housing affordability for all in the Portland region, we will need to move beyond promoting the Community Land Trust model solely for the moderate-income and solely for homeownership. We will need to take a cue from Champlain Housing Trust and push Proud Ground to serve both rental and owner properties and to gain far more foothold in the Portland area market.  It may be a long-term process, but we can take heart from the progress that Champlain Housing Trust has made in Burlington since 1984–nearly 8% of all housing.  Various levels of local, regional and state government and private foundations, institutions and individuals owning property will need to partner with Community Land Trusts to change our housing model.

Moda Center crowd, Aug. 9, 2015

People came from all over the region to fill the Moda Center while 9000 waited outside in the August heat. It will take this kind of enthusiasm to change our housing system! Photo by PlanGreen

Ultimately, changing our housing model won’t just happen in Burlington or in Portland. Although I do believe strongly that we all need to work for change from the bottom up, it will help greatly to have a supportive federal government to promote and achieve this concept nationwide.

Put a Bern on Housing Affordability²

Let Bernie know that you want him to promote the CLT model of housing affordability.

Let Bernie know that you want him to promote the CLT model of housing affordability.

There is already a National Community Land Trust Network (now Grounded Solutions Network) that has been bringing leaders from CLTs across the nation together to discuss issues and best practices in CLTs for many years.  They also push for policy change.  Intersections 2016 claims to be “the only national conference dedicated to permanently affordable housing and the creation and preservation of just, equitable and inclusive communities across the country and around the globe.” The conference is expected to draw more than 350 professionals to Park City, Utah, September 26-29, 2016.

Grounded Solutions Network is likely our best chance to help us understand and then achieve change that needs to happen at the federal level. Meanwhile, let Bernie know you want him to repeat “the best thing I ever did as Mayor” on a larger scale–for ALL OF US.  Let’s work to put a Bern on housing affordability.

 

Notes:

¹Founded in 1979, the Institute for Community Economics (ICE) pioneered the modern community land trust (CLT) model, Today ICE is a federally certified Community Development Financial Institution (CDFI) offering loans and more to create community land trusts. I worked for ICE in the 1990s.

²Most Portlanders will likely appreciate the take-off in my title on Portlandia’s “Put a bird on it.”  A national audience may not.

Many thanks to Chris Donnelly of Champlain Housing Trust for spending nearly an hour on the phone with me answering my questions.

Another article worth reading:  How Bernie Sanders Made Burlington Affordable  by Jake Blumbart in Slate Jan. 19, 2016.

Where is Toronto’s Green Waterfront in 2015?

October 10, 2015  

Native plants at Don's Edge

All I could think when I looked down at the Don River mouth was “well, they are native plants at least!” Photo by PlanGreen

In 2007 when I wrote Greening Waterfront Development: Toronto, I was highly impressed with official plans for greening Toronto’s waterfront.  Our two day tour with Greater Portland Inc, had Waterfront Revitalization on the agenda, but we didn’t get to the area that I wanted to see–the re-naturalizing of the mouth of the Don River.

So after our debriefing on Sept. 30, I rented a bike at HI Toronto  and headed towards the Waterfront Trail then east towards the Don River. I wanted to document the progress Toronto had made in their plans to transform the mouth of this highly channelized river that I had written about in my 2007 article. I soon ran out of separated bike trail and plush new development and came to a channel with a short bridge over it.  With a bit of incredulity in my voice, I asked “Is THIS the mouth of the Don River?” of the fellow who turned out to be the drawbridge operator.

Don River Mouth and Drawbridge

I had already crossed this drawbridge when it opened for a barge carrying dredge materials. Photo by PlanGreen.

He assured me that it was. Then I asked “What about the re-naturalization they were going to be doing?”  He told me that volunteers had been doing some planting in the park down the way so I headed into the  industrial area along Villers Street making a first stop at a small public pier to capture the drawbridge opening. I was crestfallen to see the mouth of the river was still in its concrete channel and brown from sediment. Active dredging was still taking place.  In fact, the drawbridge was opening for a barge carrying dredge material upriver in what is called the Keating Channel.

I'm passionate about community ecological restoration efforts, but what I saw was not at the scale that needs to happen. Photo by PlanGreen

I’m passionate about community ecological restoration efforts, but what I saw was not at the scale that needs to happen. Photo by PlanGreen

I did find some native species and a sign corroborating what the drawbridge operator had told me. But the scale of the ecological restoration that needs to be done there came nowhere close to the scale of the earth moving and skyscraper building that is taking place nearby. In fact, it seemed to be the proverbial drop in the bucket.

I found it disappointing that any city with 180 towering cranes in its core area alone was not making equally fast progress with the ecological restoration of one of its major rivers. It leads me to ask what kind of public benefit is the City extracting from each of these developments?

Barging Dredge up the Don

I certainly hope that the planned restoration includes removal of this ramp along the Don River too. Photo by PlanGreen

Recommendations to re-naturalize the mouth of the Don River have been in existence since 1991.  According to a Wikipedia article on the Don: In 2007, the Toronto Waterfront Development Corporation (now WaterfrontToronto) held a design competition that looked at four different configurations for the mouth of the Don. The winning bid was made by Michael Van Valkenburgh Associates.[16] The environmental assessment is expected to be complete in 2008 and construction is scheduled to begin in 2010.[17]  That Environmental Assessment was only passed by the province January 26, 2015–a 7 year lag!  This was not because of the economic “recession.”  We were told that did not phase Toronto.

MVVA Plan for Re-Naturalizing Mouth of the Don

This 2007 award-winning plan by Michael Van Valkenburg associates can be found here http://www.mvvainc.com/project.php?id=60–along with many other tantalizing images.

When I reviewed the plans by Michael Van Valkenburg Associates, I was reminded that Instead of creating naturalized banks along the straight course of the existing channel connecting the Don River with the lake, as was originally suggested in the project brief, MVVA’s design keeps the Keating Channel as an urban artifact and neighborhood amenity and creates a new mouth for the river that flows logically from the upstream source, bypassing the abrupt right turn created by the channel. A large new meandering riverfront park becomes the centerpiece of a new mixed-use neighborhood.

October 12, 2015

An interesting explanation for the delay of the re-naturalization of the Don River that I was expecting to see can be found in Planning Nature and the City: Toronto’s Lower Don River and Port Lands  by Gene Desfor and Jennifer Bonnell:

. . . in the fall of 2011 Mayor Rob Ford, his brother Councillor Doug Ford, their right-wing allies, and competing development agencies, attempted to hijack current waterfront planning processes and radically alter plans for the Port Lands. Those sympathetic to Mayor Ford’s vision see these lands primarily as a way to ease budget woes by selling prime waterfront property to international developers. As the Toronto Star editorialized, “The Fords’ ludicrous vision for the future – complete with a megamall, monorail and giant Ferris wheel – was so abysmal that a tide of Torontonians rose up in protest. Most city councillors broke with the mayor’s program and quashed the takeover [of Waterfront Toronto].”31 At the time of writing [no date provided], a political solution is being sought in which Waterfront Toronto, the City, and various special purpose government organizations are working to design a compromise between Ford’s “ludicrous vision” and the plan based on the MVVA proposal.

Don Lands Map

There are three distinct plans for revitalization around the Don River:: West Don Lands (pale plum), Lower Don Lands (lime green) and Portl Lands (turquoise blue and light turquoise). Map courtesy of Waterfront Toronto

According to Waterfront Toronto website, construction of the Lower Don Lands Plan and the Port Lands Plan is yet to come.  There is no mention of the above controversy on their site.

A Waterfront Toronto newsroom article announced that on July 14, 2015 it, along with federal, provincial and city government partners, came up with $5M to take the next steps on the proposal to naturalize the Don River:

The due diligence work being primarily undertaken by Waterfront Toronto will provide governments with additional assurance on the estimated $975 million cost of this project, which includes rerouting the Don River to the middle of the Port Lands between the Ship Channel and the Keating Channel, remediating the area’s contaminated soil, creating new parks, wetlands and resilient urban infrastructure that will remove the flooding risk, unlock a vast area for revitalization and development – including the creation of a new community called Villiers Island – and create billions of dollars of economic development opportunities.

New Precinct Map

These new precincts are estimated to bring $3.6 billion in value, 7,672 person years of employment and $346 million in tax revenues. First partners must reroute the Don River, remediate the area’s contaminated soil, and create new parks, wetlands and resilient urban infrastructure that will remove the flooding risk. Image courtesy of Waterfront Toronto

The first phase of this due diligence work is scheduled to be completed by November of this year [2015],  and “will enable government funding of the project by providing confirmation of the cost of the project, strategies to mitigate the risks associated with the project, and an implementation strategy.”

The project would be ready to start by 2017 and take approximately seven years to complete.  An independent study by PwC done for Waterfront Toronto in 2014 estimates that “the project will generate $3.6 billion in value to the Canadian economy, 7,672 person years of employment and $346 million in tax revenues to all levels of government.”

So, to answer the question my title asks, “Where is Toronto’s Green Waterfront in 2015?”–LOOK FOR IT IN 2024!  That estimate, of course, will depend upon continued economic progress–progress that seems a bit uncertain right now.

Mycoremediation: Testing Results In The Field

 

Jordan Weiss

Jordan Weiss demonstrating the mixing of myceliated Oyster mushroom straw at Dharma Rain Zen Center–photo by PlanGreen

August 6, 2015

When Jordan Weiss set out to use mushrooms to help clean up the soils and filter the water at the former landfill/brownfield site purchased by the Dharma Rain Zen Center (DRZC), he did so based upon the mycoremediation research of others such as Paul Stamets and his team at Fungi Perfecti.  He didn’t set up the effort as a research project.  He didn’t have funders to answer to as he volunteered his time and even many of the materials. He taught workshops that brought in the  volunteer labor from the Zen Center, the Oregon Mycological  Society and neighbors and friends.

Now, to take the project to the next level as a mycoremediation model for the Portland area, Jordan and others involved with the project, like myself, would like funding.  Funders always want  data–not just university lab data or even other people’s field data, but data from the project they are asked to fund.  I’m working with Jordan to figure out what baseline data is out there re: water quality and soils and what more data we need to collect to prove that mushrooms are removing toxins on this site and can do so throughout the Portland area.

DRZCSitePlanMap

This plan shows the rain garden (9) to the west of the meditation hall and the food garden (3) to the south–from Planting Zen, DRZC

 

Clean Soil to Garden Boxes

Soil testing revealed high levels of PAHs in the underlying soil so clean soil is being delivered for garden boxes–photo by PlanGreen

The Phase I Environmental Site Assessment for the DRZC site is of little help with regard to pollutants in water or stormwater. Essentially, its conclusion was: No analytical testing of shallow groundwater has been reported to ODEQ.  In the Phase II ESA, eight soil samples were tested in the area where the food garden is now.  High levels of PAHs were found in this soil, causing DRZC to build boxes and import clean soil for vegetable gardening.  The area where the raingarden is does not seem to have been tested.

Garden w/Berms

There are large berms (barely visible in the photo) at the north end of the garden where mycobags were placed on July 1, 2015–photo by PlanGreen

The best place to do future myco-remediation installations may be in the food garden area at the edges of the boxes since that soil had already been tested prior to any mycoremediation efforts, . After the mushrooms get established, DRZC and its partners could continue to test  the underlying soils for levels of PAHs.  The hypothesis is that the mushrooms and their mycelia will reduce or eliminate the PAHs.

PAHs (such as acenaphthylene’s, anthracene, benzo(g,h,i)perylene, fluorine, phenanthrene and pyrene) are listed by the EPA as possible carcinogens and maximum allowable standards are set for them.

BES Water Quality Chart

BES Water Quality Chart from Appendix A of 2008 Stormwater Management Facility Monitoring Report

We will want to do stormwater testing too.  The Portland Bureau of Environmental Services (BES) Stormwater Management Facility Monitoring Reports for both 2008 and 2010 tell us what water quality data BES monitors for in its stormwater facilities. From the chart in the Appendix of the 2008 report, we see that they monitor for oil,  grease, E. coli, metals, total phosphorous and orthophosphate phosphorous, ammonia-nitrogen and nitrate nitrogen in water.

Here’s what they test in the sediments:

BES Sediment Testing Chart

HCID/TPH is a screen to determine the presence and type of petroleum products in the soil

That HCID/TPH is a way to screen for PAHs and other petroleum products in the soil.  We do know that BES also does separate soil sampling. Some of the latest soil sampling data¹ shows that E-coli and heavy oil levels were higher than the background soil sample sites located nearby–but outside of the stormwater facilities. Metal and PAH levels found in stormwater facilities were generally similar to those found in background sample soils.  While these results show that soils in green street stormwater facilities (bioswales, raingardens) are likely taking up E-coli and heavy oil from runoff that would otherwise go down a storm drain, we hope to show that with the use of mushrooms, soil results could be cleaner than the background samples in all categories tested: E-coli, heavy oil, metals and PAHs.

Raingarden Work Party

Since toxins in surface water was not found t be a problem, the largest source of future pollutants may be from runoff from the parking area in the background of this photo–by PlanGreen

 

Since the only water sampling that revealed toxins at DRZC was the seep in the northeast corner of the site², our approach for monitoring the raingarden could start with the first rains of Fall 2015.  We would largely be monitoring for pollutants from the parking area west of the raingarden. Parking lots are well-known for contaminating stormwater with PAHs when it rains.

Jared Kinnear

Jared Kinnear, Recycled Water Program Manager at Clean Water Services–photo by PlanGreen

The Portland area is fortunate to have a second mycoremediation project underway in our region. In July 2015, I set up a meeting with Clean Water Services  Jared Kinnear and Pacific University toxicology professor Deke Gunderson to learn from their project to test mushrooms for cleaning street sweepings.  They hope to get the street sweepings–what appears to be the compost I buy in bags at Ace Hardware– to the point that it is judged safe for farmers’ fields.  They set up their project in conjunction with Fungi Perfecti which provided both the protocols and the mycelium inoculated wood chips for the research.

The project has evolved from what was originally conceived.  Because of time and labor constraints and the preliminary results, the project was modified from the original one that would have tested five species of fungi to just testing Stropharia rugoso annulata (King stropharia) and Pleurotus ostreatus (Oyster mushroom).  Then it was narrowed down again when the researchers found that the oyster mycelium stayed on the wood chips rather than spreading throughout the mixture of wood chips and street sweepings.

King Stropharia with a small portion of its mycelium

King Stropharia with a small portion of its mycelium growing at DRZC–photo by PlanGreen

So they are now testing the ability of King stropharia mycelium to eliminate polycyclic aromatic hydrocarbons (PAHs) or at least reduce them to a level that they are safe to spread on farm fields.  The levels of PAHs are tested on a chromatograph at Pacific University. Since once the inoculated wood chips were added to the street sweepings, the levels of PAHs were so low that they were difficult to fully measure, the team decided to spike the experimental samples with PAHs in order to measure the effectiveness of the mushrooms.

Hailey Jongeward and Prof. Deke Gunderson

Hailey Jongeward and Professor Deke Gunderson in discussion over a box of street sweeping material–photo by PlanGreen

The EPA has recognized 7 PAHs as priority chemicals due to their persistence in the environment.³ The most common way to be exposed is by breathing contaminated air but exposure can also come from  eating contaminated food. While we were there we met one of Dr. Gunderson’s students ,Hailey Jongeward, who has since shared with me her PowerPoint report on the project.

“Of the 7 priority chemicals we found traces of all 7 in the starting material, increasing the importance of this project” she wrote.  Those chemicals are: acenaphthylene’s, anthracene, benzo(g,h,i)perylene, fluorine, phenanthrene and pyrene.

Street Sweepings box

This box of street sweepings is being colonized by mycelia that were added as spores on wood chips–photo by Hailey Jongeward

Street Sweeping Box 2

This box has greater colonization of mycelium throughout–photo by Hailey Jongeward

Hailey also shared the photos of the subject material to the right.  Boxes get different ratios of wood chips to spores so that may account for the difference in the two boxes.  Both show that the mycelium is spreading, but the lower one more than the upper one.  Hailey also told me she is working in partnership with fellow Pacific University students Jake Prevou and Natalie Kimura.

I believe that the monitoring of the Dharma Rain Zen Center project needs to take on some similar elements as the Clean Water Services project and monitor soils for reduction of PAHs.  It would also be useful to test the water flowing into and back out of the raingarden, but that may prove more difficult because it was not designed for doing such testing.  Our best bet may be one identified in the Phase II ESA: “a location south of the seep had water discharge from piping, which was traced to a stormwater surface drainage feature.”

It is exciting to be part of the initiation of a technology–or rather a protocol for utilizing an ecosystem service from the seen and unseen mysteries of the natural world.  As we enter an era of climate change, such services will become more and more critical for adapting to changes, mitigating the impacts and healing our past wounds to the earth.  I want my business, PlanGreen, to be at the forefront of utilizing the services that nature provides for free.

Please see my previous four posts on mycoremediation on http://plangreen.net/blog/.  You may want to FOLLOW this site for the latest news. And do post your comments and questions below.

UPDATE, Sept. 21, 2015 

Dharma Rain Zen Center started an Indiiegogo campaign http://igg.me/at/PlantingZen/x on Sept. 21, 2015 that allows you to contribute to their restoration and community building work.  Your dollars will be matched dollar for dollar.  I hope you will help if you can!

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¹Bureau of Environmental Services • City of Portland 2010 Stormwater Management Facility Monitoring Report

²Levels of arsenic slightly higher than allowed for drinking water standards was found in the northeast corner seep.

³See fact sheet on PAHs from the EPA Office of Solid Waste at http://www.epa.gov/osw/hazard/wastemin/minimize/factshts/pahs.pdf

Mycoremediation with “Spongy Parking Lots”

Aug 2, 2015

Portland’s Old Town China Town neighborhood has an abundance of surface parking lots.  In fact, it has far too many to be a vibrant neighborhood much less an expression of the eco-city that Portland purports to be.  I’ve joined with five other professional women to try to change that.  If we can’t see these central city lots immediately redeveloped to higher and better uses that house people and businesses, we at least want to see them become better parking lots–SPONGY PARKING LOTS.

Spongy Parking Lots Video image

Image borrowed from PDX Downtowner You Tube site.

My friend, Ruth Ann Barrett coined that term and even made a video about Spongy Parking Lots to share with her neighbors in Old Town/Chinatown.  She has friends who visit from California and she’s embarrassed to show them how much we waste water here in Portland.  When it rains, the water from those parking lots heats up and captures whatever pollutants vehicles leave behind on its way to the nearest storm sewer.  The surface parking lots are paved in asphalt and are major contributors to the urban heat island effect that raises the temperature as much as 10° over areas with open land and vegetation.  In turn, the extra heat increases the energy needed to cool interior spaces, and puts an extra strain on the grid by exacerbating peak energy loads and hence carbon footprint/climate change. It also contributes to smog formation adding even more public health impacts resulting from excessive outdoor temperature.

Spongy trail in an old growth forest. Photo by PlanGreen

Spongy trail in an old growth forest. Photo by PlanGreen

We’ll return to all that in a moment, but I first want you to remember walking on a trail in the woods where your feet just seemed to bounce on the earth beneath them.  That’s because that soil was kept porous and, yes, spongy, by the mycelium forming a thick mat that was turning wood to soil under your feet.  Those mycelium have fruiting bodies that we call mushrooms–which may or may not be visible during your walk.

Mycelium on log

The white stuff in this photo is mycelium. It will spread throughout the log and ultimately decompose it–creating spongy soil. Photo by PlanGreen.

That mycelium looks a bit like a very dense spider web criss-crossing to create quite a network.   It gets its nutrition by decomposing the cellulose in the log.  The ability of mycelium of mushrooms in the category of “white rot fungi”  to decompose cellulose is related to their ability to decompose numerous other substances as well: bacterial toxins such as e-coli and fecal coliform as well as polycyclic aromatic hydrocarbons(PAHs).  Research also shows their ability to transform  bunker fuel oil, explosives, polychlorinated biphenyls (PCBs), and organochlorine pesticides–substances we hope we won’t find in OTCT parking lots.

Ecotrust Parking Lot

Built in 2001, the parking lot at Ecotrust is an outstanding model of a “Spongy Parking Lot”. It probably even has a few mushrooms by now. Photo by PlanGreen

We do have models for Spongy Parking Lots nearby.  My favorite is at the Jean Vollum Natural Capital Center (aka Ecotrust) in the adjacent Pearl District neighborhood.  Often on a summer day, the cars are kicked out of this pleasant parking lot for an array of fairs, festivals and farmers’ markets.  If you enlarge this photo, you will see that the lot is paved with light colored porous pavers and that those trees are planted in bioswales that also hold an array of mostly native plants.  You will see that  the parking spaces drain into those bioswales. which are about 2.5 feet deep.  Not only do the soils and plants in  the bioswales infiltrate the water from the parking lot within 24 hours, they also cool the water and filter the pollutants that come from our vehicles and pets.

BES Sediment Testing Chart

HCID-TPH is a screen to determine the presence and type of petroleum products that may exist in water or soil. Table from BES 2010 Stormwater Monitoring Report referenced below.

What could be better?  Well, Portland monitors the effectiveness of its bioswales and some of the latest soil sampling data¹ shows that E-coli and heavy oil results were variable, but levels were higher than the background soil sample sites located nearby but outside of the stormwater facilities. Metal and PAH levels found in stormwater facilities were generally similar to those found in background sample soils.  While these results show that soils in bioswales are likely taking up E-coli and heavy oil from runoff that would otherwise go down a storm drain, soil results could be CLEANER THAN THE BACKGROUND SAMPLES in all categories tested: E-coli, heavy oil, metals and PAHs.  If mycelium running through the bioswale made the soil spongier and more absorbent and if those same mycelium could help the plants thrive by “eating” more of the pollutants, then I maintain we would have an even spongier parking lot.  A spongier parking lot could better utilize and clean the water running off it into bioswales.  As its trees and plants grow better with less pollutants in its soil, the spongier parking lot will decrease the urban heat island effect even more and become an important strategy for both mitigating and adapting to climate change.

I hope you will read my previous three short blogs on mycoremediation/mycofiltration (http://plangreen.net/blog) to better understand the technology I am proposing.  I plan one more mycoremediation blog on monitoring.

_____________________________

¹Bureau of Environmental Services • City of Portland 2010 Stormwater Management Facility Monitoring Report

 

PDX Climate Action Plan 2015 Needs Urban Design

June 24, 2015  Testimony of Mary Vogel, PlanGreen to Portland City Council

There is a great deal to like in the Portland/MultCo Climate Action Plan 2015 and I applaud it as far as it goes. But one of the things missing is attention to URBAN DESIGN not just Urban Form. It needs to include implementation actions on evaluating existing land use policies that shape urban design for impact on climate change. That mandate could be included on p. 80, Urban Form and Transportation Chapter under either Decision-Making or Planning Scenarios Evaluation.

Here’s one example!  We need to change a policy that:

NW Townhouses w/short driveways and garages that dominate the sidewalk. The trees are on the wrong side of the sidewalk and will not last long in their present location.

NW Townhouses w/short driveways and garages that dominate the sidewalk. The trees are on the wrong side of the sidewalk and offer no protection or additional shade to the pedestrian. They will not last long in their present location. Cars parked in these driveways will block pedestrian passage altogether. Photo by PlanGreen

 

Promotes private automobile use

 

Leads to less community interaction

 

Makes our sidewalks less safe and useable for pedestrians

 

 

NW Townhouse w/van blocking sidewalk

This NW Portland sidewalk is partially blocked by this van. Note the driveway apron that usurps 1.5 public parking spaces on the street.

Displaces on-street parking spaces that make pedestrians feel safer

Usurps public parking space

Makes sidewalks less useable by pedestrians

 

 

 

 

SW Hamilton Townhouses - No street trees

This SW neighborhood street is adjacent downtown. It has the requisite off-street parking, but no street trees or landscaping to protect residents from the freeway above–or give them incentive to walk anywhere.

Disrupts the look and feel of the neighborhood

Displaces street trees that both protect and add comfort for the pedestrian

Displaces garden space that could be used to grow food

 

 

 

 

That is the requirement for off-street parking for every new house more than 500’ from a transit stop. Please make sure that a review of this policy and other existing policies is part of the Climate Action Plan.  That will greatly strengthen the plan!

I’m adding  a couple of examples that were not in my original testimony in order to show both the worst and best of Portland’s central city urban design with regard to parking.

NW 24th Ave Garages - Abominable Streetscape

I know you’re thinking this is the BACK of the property but its the FRONT on a street in one of the densest neighborhoods in Portland, OR–NW 24th Ave. Similar streetscapes are not uncommon in NW Portland.

                                                                                                    Even Portland’s numerous graffiti artists don’t seem to find these garage doors compelling places for their art–even though the doors front a street in one of the densest and most popular neighborhoods in Portland.

Most pedestrians don’t find this wasteland a compelling place to be either.  In fact, they cross the street in order to avoid them.  How does such awful urban design continue to exist in one of the most popular neighborhoods in Portland?

 

NW Pettygrove Condo Garage with single curb-cut

This NW Pettygrove condo building w/garage has a single curb-cut and is an example of how off-street residential parking should be handled–if it is necessary at all.

Okay, we can keep some off-street parking.  In really popular neighborhoods that folks from the suburbs flock to on evenings and weekends, residents with cars can really benefit from off-street parking.  This 12 unit condo building with it’s single driveway and garage exists immediately adjacent another abomination like the one above at NW 23rd & Pettygrove in Portland.  This building is an example of how off-street parking should be done–if it is done at all.

 

Let me know your thoughts!  I will pass them on to Portland policymakers and planners.

City Creek Center as Biodiversity Engine?

DSCN0940June 2013 – City Creek Center was started in 2003 by the real estate investment arm of the Latter Day Saints. The intent was to bring back Salt Lake City’s Main Street in a downtown that was losing out to the suburbs. It’s a mixed-use project that includes retail shops, office space and 435 condominiums and 110 apartments. No public subsidy was received so the project does not include “affordable housing.”

It’s also a green roof project in that its 90,000 square feet of plantings, courtyards, roof gardens and water features cover a 6000 space parking structure. What a waterproofing challenge!

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Both sides of the first Main Street TRAX stop are bordered by the Center. Photo courtesy of UTA.

“The things the LDS Church is doing with City Creek Center are going to be a positive boost to walkability and transit in Utah” according to “Faith in Action: Communities of Faith Bring Hope for the Planet,” a national report of the Sierra Club.  The Center brought more residents, employees, shoppers and diners to use the light rail system called TRAX.

Opening in 2012, with final touches added in 2013, this downtown revitalization project took 10 years to complete.  With development continuing throughout the crash in real estate, it was one of the only privately-funded projects of its size in the US that continued to build over the last few years. I happened to meet the Portland-based ZGF architect who was their project manager for the residential portion this week (at an event in Portland, first week of June 2013) and she confirmed how important this project was to her firm.  It also kept 2000 others employed throughout the development cycle and now employs over 7000 people.  It had about 16 million visitors in its first year of operation.

You can read more about the economic development aspects of City Creek Center elsewhere e.g., Salt Lake Tribune.  What I’m going to look at here is what role City Creek Center plays in putting Salt Lake City on the path to becoming the engine of biodiversity that Richard Louv exhorted CNU 21 attendees to work towards in our work.

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Although I’m not a fan of shopping centers, the creek kept me coming back day-after-day

City Creek Center was actually in the middle of my route to and from the Grand America Hotel where CNU21 was held from May 29 to June 1, 2013. Even though I’m NOT a fan of shopping centers, once I saw the creek there, I happily sauntered through it every day of my five-day stay.  It gave me a taste of what I was missing in the nearby canyons as I made my way to The Grand America each day.  The creek stimulated for me feelings of peacefulness—and a desire to get out into the real thing.

I recognized immediately the trees native to this area: Populus tremuloides – aspen; Betulae occidentalis – water birch; and Prunus virginiana – chokecherry. They were planted along a lovely creek that bubbled through boulders of native sandstone.  Below the canopy level, there were native sedges and rushes and shrubs– and a few plants I didn’t recognize as native. Tough non-native shrubs were brought in to overcome the trampling the natives were experiencing.

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Developers made an extraordinary effort to re-create the iconic creek that was so critical in Salt Lake City’s founding

I appreciated the fact that the developers named this center after a natural feature that used to be there—AND that they made an extraordinary attempt to re-create that natural feature in their development. The creek flows across three city blocks, and drops 37 feet in elevation from beginning to end. Some 600 boulders were brought in from an area near Park City and 627 native trees from nurseries in Oregon and Idaho.

As it meanders along pedestrian walkways and cafes, the recreated creek features three waterfalls and a fountain with 50-foot-high jets. The creek varies in width from one foot to 28 feet and from four inches to 18 inches in depth.  Some parts of the creek were stocked with Bonneville cutthroat trout and rainbow trout and those fish are now reproducing.

A 17-foot waterfall at Regent Court cascades at 2,500 gallons per minute over 14 ton Utah sandstone boulders.  The landscape is actually comprised of 13 different water features that recirculate their potable water. According to Ross Nadeau, Landscape Architect project manager, “We looked at utilizing City Creek itself and then at the de-watering water from the site, but we couldn’t make either work because of the filtration costs.”

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The creek serves as a draw for shoppers, employees and residents

City Creek Center received a LEED ND rating of Silver for its multiple efforts to be sustainable.  “The heart and namesake of our development is the re-creation of City Creek, which many years ago used to run through the downtown area of Salt Lake City,” said Val Fagre, former City Creek Reserve project manager—now retired. The craftsmanship put into building the creek is extraordinary.  And I can vouch that the creek serves as a draw for shoppers, employees and residents of City Creek Center. In the two times I ate at the Food Court there, I went to extra effort to sit near the creek. The Center also seems to attract plenty of young people to hang out on Friday and Saturday nights.

Nearby, City Creek Canyon has been protected from the beginning of the city’s history (over 150 years) to protect drinking water and wildlife habitat.  According to students in a class project in General Ecology at Westminster College:

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Glacier lilies are found along the City Creek Canyon Nature Trail

By learning the names of the native trees and shrubs that support the wildlife in City Creek Canyon along the nature trail loop, one can see which plants may be useful in backyard landscaping. Native plants introduced into the urban landscape around houses and yards help wildlife to survive in the city and help conserve water.

Based upon the students’ observations (I didn’t get there), City Creek Canyon could qualify as an engine of biodiversity.  But could City Creek Center qualify?

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City Creek Preserve could help City Creek Park become a true gateway to City Creek Canyon wildlife corridor–as well as give it a role in flood protection. Right now, it’s a concrete ditch (lower right). Photo courtesy of SLC Parks.

I missed the small signs that interpret the plants and fish of City Creek Center so it was not apparent to me how it was being used to influence further biodiversity–but the signage is there.  Does the experience of being in a pleasant environment lead people to go home and attempt to mimic what they saw while shopping or dining? Perhaps the center could be more proactive and run some “naturescaping” classes and host some native plant sales by local groups.  The project I would most like to see is for City Creek Preserve to work with the City’s Department of Parks and Public Lands to restore City Creek Park, to a more natural condition making it a better gateway to City Creek Canyon.  A stream buffer and wetlands could be quite important there to prevent or alleviate flooding in the future, e.g., heavy snow melt flooded State Street in 1983. The City is already undertaking some watershed restoration projects funded by Chevron as mitigation for an oil spill.  Hopefully, it won’t take such a negative event for City Creek Preserve to offer such assistance in order to increase its role as a biodiversity engine.

The boulders came from Brown’s Canyon quarry, a 100 year-old business near Park City.    Does that quarry have a biodiversity management plan (a BMP for quarries developed by World Wildlife Fund)? If not, what role should City Creek Preserve play in suggesting they start one?  Of course, such a suggestion would carry more weight before the stone was purchased.

The developers took their project through the pilot phase of LEED ND.  But did they consider Sustainable Sites, a system focused on measuring and rewarding a project that protects, restores and regenerates ecosystem services – benefits provided by natural ecosystems such as cleaning air and water, climate regulation and human health benefits.

I believe City Creek Center would score well in the “Human Health & Well-being” category.  But I’m still concerned about all of the water and power used in this engineered ecosystem. Tell us what you think below: Does City Creek Center pass muster as a biodiversity engine for Salt Lake City?  Why or why not?

 

Portland: A New Kind of City – Part III, Greenways

The deadline for comments on Portland’s Draft Comprehensive Plan is May 1. I hope you will endorse this Greenways comment at http://www.portlandoregon.gov/bps/60988 before that date     –or write your own. 

Portland planners have been talking about integrating fingers of green into the city for a couple of years now.  Then they gave the concept some teeth in the Portland Plan and now the draft Portland Comprehensive Plan with  the concepts of Habitat Corridors (pp4-6 and 4-7) and Greenways (pp 6-34 [sic] and 5-35).

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Tree Crew Leaders rally before each planting

I love planning, but it’s implementation that really lights my fire.  I haven’t figured out how to become a developer yet, so I plant trees with Friends of Trees. In fact, I’m a Tree Crew Leader in both its Neighborhood Tree and the Green Space Initiative planting programs.

I look forward to my Neighborhood Tree planting days with a bit of ambivalence.  I love helping neighbors get those big trees into the ground while getting to know each other better as neighbors. We also have conversations with people out in their yards or walking their dogs in the neighborhood–adding to the sense of community.  But I often cringe at the tree species selection that I am assigned to plant.  Rarely is there a native tree in my allotment of 9-12 trees–lots of Persian ironwood, Japanese snowbells, Chinese dogwoods and. . .you get the picture!  I’ve even come to celebrate when I get a Rocky Mountain Globe Maple because that’s a little closer to the Pacific Northwest.

Last Saturday, April 20, 2013, Friends of Trees had its Earthday planting on the NE Holman Greenway.  Homeowners along Holman had been offered FREE trees because their street had been designated a Greenway.  It was Earthday and  we were planting a Greenway, so I was hopeful that at last we might be planting some NATIVE street trees.  Several businesses had sent teams, so it was an opportunity to educate them.

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Part of my Friends of Trees crew planting a tree that will help transform this street.

I thought I recognized only one tree on the list as a native tree: Swamp white oak. Turns out, it’s native to the same region I am–the mid-Atlantic (and a bit further).  But it’s not native here–so, unfortunately, there were no natives.

We’ve  started to implement the Greenway concept before the Comp Plan passes. My point is, why aren’t Greenways green in more ways than bikes and stormwater. The draft Comp Plan mentions promoting multi-objective approaches. So let’s add one more objective to our Greenways. Let’s add wildlife habitat too.  My brief additions to the draft plan policy are in RED . Its already a great policy, so I did not have to change much!

Policy 5.26 Greenways. Create a citywide network of Greenways that provide distinctive and attractive pedestrian- and bike and wildlife-friendly green streets and trails that link centers, parks, schools, rivers, natural areas, and other key community destinations.

5.26.a. Strive for an integrated Greenway system that includes regional trails through natural areas and along Portland’s rivers, connected to green streets and other enhanced streets that provide connections to and through the city’s neighborhoods.

5.26.b. Prioritize multi-objective approaches that draw on and contribute to Portland’s pedestrian, bicycle, green street, wildlife corridor and parks and open space systems.  Recognize that to be multi-objective for wildlife, native plant species are required.

5.26.c Strive to re-landscape most Greenways with native plants both to better serve our native wildlife and to allow more children to experience nature where they live. Require plantings in the public right-of-way be native and strongly encourage native plantings on private property too.

The draft Plan commentary on Habitat Corridors suggests: Corridors to connect bird habitat on Mount Tablr and Clatsop Butte could be provided across 82nd Avenue and I-205 by planting large, primarily (sic) native trees, incorporating naturescaping into yards and other landscaped areas, and/or installing ecoroofs that have suitable native plants. This is an excellent suggestion but it needs to be applied more widely.

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There’s no reason this and all the bioswales along this Greenway couldn’t be planted in native plants and trees.

 

We’re already connecting Mt. Tabor to the Willamette River (Tabor to the River). Let’s connect the Willamette  River to the Columbia through North and Northeast Portland. Let’s connect Forest Park to the Willamette through Goose Hollow and Downtown and through Northwest and the Pearl.

The Greenways designated on the Comp Plan  map below (from p.4-6 and 5-34)–and a few others I would propose that are not yet on the map–are the logical places to make those connections. If we can do this, we will truly be creating a new kind of city–one that is more friendly to wildlife, to children–and to the rest of us too.

WildlifeCorridor-GreenwayMap

The photos I’ve used to illustrate this article are stand-ins from earlier events I photographed. I will be adding the final ones as they become available. Meanwhile, I thought it was important to publish this before the May 1 deadline on comments.

Portland: A New Kind of City II

In Portland: A New Kind of City I, I argued that if Portland is to achieve some of its other policies in the Watershed Health and Environment chapter of Working Draft 1, Portland Comprehensive Plan, policies such as Biodiversity and Habitat Corridors, it is important for any policy on Vegetation to stress the importance of NATIVE vegetation–in part, because native species of insects, the base of the food chain, need native plants to survive.

I want to now draw your attention to policies under the “Design With Nature” section of the Urban Design and Development chapter–one of the sections with the greatest potential to lead to transformational design and a new kind of city.

Policy 5.45 Greening the built environment. Encourage the incorporation and preservation of large healthy trees, native trees, and other vegetation in development. 5.45.a. Prioritize integrating natural elements and systems, including trees, green spaces, and vegetated stormwater management systems, into centers. 

Change Policy 5.45 and 5.45.a. to:  5.45 Encourage the preservation of existing large healthy trees and encourage the incorporation of native trees and other native vegetation into development.  5.45.a. Prioritize integrating natural elements and systems, including native trees, natural areas, and stormwater management systems utilizing native vegetation into centers.

Invasive English ivy and Himalayan blackberry growing along the Willamette River in February. Green is not always "green"!

Invasive English ivy and Himalayan blackberry growing along the Willamette River in February this content. Green is not always “green”!

My further comments on Policy 5.45: “Greening the built environment” should make clear that green is not always “green”. We have a number of trees and vegetation that actually threaten watershed health and community livability rather than benefit it.  This policy needs to be more explicit on what is green.

I realize that with global warming, plant zones are changing. That doesn’t mean that we should be welcoming more alien ornamentals from all over the world. Rather, we might monitor the robustness of our native species and possibly look to bring in more species from areas of southern Oregon or northern California. 

Policy 5.46 Commentary: (Policies in the Working Draft have commentaries on the left pages) Habitat and wildlife‐friendly design, promotes development that integrates green infrastructure, habitat‐and bird‐friendly design, and the use of appropriate, NON-INVASIVE PLANTS (emphasis mine) for pollinators. . .

Change to:  Habitat and wildlife‐friendly design, promotes development that integrates green infrastructure, habitat‐and bird‐friendly design,and the use of native plants for pollinators and other native wildlife species.

My comments on Policy 5.46 Commentary: In Bringing Nature Home, Doug Tallamy cites numerous

Photo by Clay RuthThe larvae of native insects need native plants to survive.

Photo by Clay Ruth
The larvae of native insects need native plants to survive.

scientific studies (including his own) to show that even if some of our adult native insect species can use alien ornamental plants, their larvae cannot. Insects need NATIVE plant species to procreate the web of life. Since our native insects are the base of the food chain for birds and many other species of wildlife, they need native plants too. You need to define habitat, at least in part, as native vegetation—in both the commentary and the policies.

Policy 5.46. Habitat and wildlife-friendly design. Encourage habitat and wildlife-friendly neighborhood, site, and building design.

. . . 5.46.b. Encourage the incorporation of habitat into landscaping, sustainable stormwater facilities, and other features of the built environment.

Change 5.46.b to:  In order to provide habitat, encourage the incorporation native vegetation into landscaping, sustainable stormwater facilities, and other features of the built environment.

The Nature PrincipleCov

Louv points out that all plants are not the same in their ability to support food webs.

I’ll rest my comments on Policy 5.46 with a quote from Richard Louv in his book The Nature Principle:

All plants are not the same.  Unfortunately, all plants are not equal in their ability to support food webs.  Food webs develop locally over thousands of generations, with each member of the web adapting to the particular traits of the other members of the web.

I also request that Portland add a definition of habitat in the Glossary that includes native vegetation. 

I’m really not a one horse planner.  I really care about so many other aspects of urban design and development. But I feel that it is so vitally important that Portland planners and designers recognize the importance of native vegetation in achieving the City’s  goals. Unfortunately, such recognition does not appear to be the case at present.  The landscape features along central Portland’s portion of the Willamette River are currently filled with alien ornamentals and its sustainable storm water facilities continue to be filled with them too. Portland has many LEED-rated buildings, but native plants are rare in their landscapes as well. And yet this Comprehensive Plan foresees far more landscape integrated into our built environment.  It is critical to get the policy right and work with landscape architectural professionals and their schools so that we’ll have people competent to implement the policy.

I’ll have more comments on other sections of Working Draft 1, but for now I want to go out and promote this exciting document and get YOU to comment too! Thanks for doing such a great job on so many fronts, Portland planners!

Portland: A New Kind of City I

. . . As of 2008, more people now live in cities than in the countryside, worldwide. This is a huge moment in human history. This means one of two things: either human connection to nature will continue to disintegrate, or this will lead to the beginning of a new kind of city, one with new kinds of workplaces and homes that actually connect people to nature.         Richard Louv, Leaf Litter, Winter Solstice 2012

CompPlanGuideCov

The Portland Comp Plan Working Draft 1 released in January, 2013 begins to envision that new kind of city for this “huge moment in history.” It includes a transportation network that aspires to integrate nature into neighborhoods through civic corridors, neighborhood greenways and habitat connections. By doing that it seeks to: 1) increase people’s access to the outdoors, 2) provide corridors for wildlife movement, and 3) catch and treat stormwater.Its Watershed Health and the Environment chapter encourages the protection/enhancement of natural systems and their role in promoting public health—as you might expect from a chapter with that heading. However the emphasis on “designing with nature” in both its Design and Development chapter and its Transportation chapter is what really sets this plan apart and makes it transformational. It puts Portland ahead of the curve in creating Louv’s new kind of city!

The fact that we have such wise and forward-thinking planners and advisory groups to create such a draft plan does NOT mean that the work is over, however.  The devil is in the details!  So, I hope that you will review those details, attend a community workshop or two, and add your thoughts. Below, I’m sharing some of my own comments on the Comp Plan Working Draft 1 in hopes that you will voice your support for them as well as develop your own points.

I was excited to see the draft Comp Plan promise (p,14) “encouraging building and site designs that have native plants and more permeable surfaces and mimic nature, so that pollutants stay out of rivers and streams.” Only once in the actual policies, however, is there any mention of native vegetation. And that one citation is followed by an exception big enough to let an area that could be a haven for more native wildlife—the west side of the Willamette River from the Steel to the Ross Island Bridges—stand as is: largely bereft of native vegetation.

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It’s difficult to find native plants along the west side of the Willamette River from Steel Bridge to Ross Island Bridge

Policy 4.3 Vegetation. Protect, enhance and restore native AND OTHER BENEFICIAL (emphasis mine) vegetation in riparian corridors, wetlands, floodplains and upland areas.

Change to:

Policy 4.3 Vegetation. Protect, enhance and restore native vegetation throughout the landscape.

4.3a. Riparian Corridors, Wetlands, And Floodplains:  Protect, enhance and restore native vegetation in critical wildlife areas such as riparian corridors, wetlands, and floodplains.

4.3b. Upland Areas:  Protect and enhance native and other beneficial tree species. Restore the landscape with diverse native species including trees, shrubs and wildflowers.

My further comments on Policy 4.3: Since riparian corridors, wetlands, and floodplains are the most critical areas for wildlife they are the most important to be restored to predominantly native plants.  What we plant from here on out along our rivers, streams and wetlands should be native check over here. Remove “and other beneficial” vegetation from the policy.

Chair of the Department of Entomology at the University of Delaware, Douglas Tallamy, in his book Bringing Nature Home argues that if alien species were providing as many ecosystem services in their new homes as they did where they evolved, they would support about the same number of insect species in both areas—but they do not. He states:

For an alien species to contribute to the ecosystem it has invaded, it must interact with the other species in that ecosystem in the same ways that the species it has displaced interacted. . . This contribution is most likely when species have evolved together over long periods of time.

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Tallamy’s slide show at Oregon Community Trees conference left community foresters committed to using native trees.

Upland areas could be separate. I would not argue against enhancing the lives of some non-invasive, non-native trees (such as our large old elms) via treatment. I’m not yet ready to maintain that all of the street trees the city plants should be native—only that many, many more of them should be. Tallamy keynoted an Oregon Community Trees conference last year where he made the same point I’m making–as well as a lasting impression on attendees involved with community trees. “When I talk about the value of biodiversity, he said, I am talking about a natural resource that is critical to our long-term persistence in North America.”

 The Comp Plan needs to stress the need to plant more NATIVE trees and plants in upland areas too.  See my next blog, Portland: A New Kind of City II  for further comments on Working Draft 1 of the Portland Comp Plan.