Category Archives: Green Infrastucture

Sustainable Stormwater Management by Tom Liptan

Sustainable Stormwater Management – a Review

March 8, 2018

Sustainable Stormwater Management: A Landscape-Driven Approach to Planning and Design

Sustainable Stormwater Management: A Landscape Driven Approach to Planning and Design

Preview the book at Timer Press: http://www.timberpress.com/books/sustainable_stormwater_management/liptan/9781604694864

by Thomas Liptan, with writer David Santan, Jr

strikes an optimistic note about the future of our cities in an era of climate change:

Indeed, the cities of the future will be garden cities. Not for aesthetics, though beauty will follow as a by-product, but for the energy savings, water management, shelter from extreme heat and precipitation, noise buffers, and perhaps most importantly the habitat and urban wildlife these plants will support. Our cities will come alive with people, plants, and creatures thriving in interdependent coexistences” (p252)

Primary author, Tom Liptan, is hoping to change the nature of urban design itself.  As a sustainable cities advocate, such change is a vision that I share.

Liptan adds yet another term to the sustainable stormwater management lexicon: landscape stormwater management. No American city has implemented more of these LSM approaches than Portland, Oregon (where they both live—as does this reviewer). Portland has roughly 7,000 green stormwater facilities in place—including a few in its downtown! They not only manage stormwater, they “conserve water and energy, reduce urban heat island effect and thermal gain in waterways, recharge groundwater supplies, create habitat and support biodiversity, buffer noise, and provide a healthier, more adaptive, more resilient infrastructure”(p18). I will add that they make a walk or bike ride more pleasant and interesting and they are cheaper and more effective than pipes as well!

Tabor 2 River Green Street

This Green Street planter at SE 41st & Clay is one of Portland’s 7,000 landscape stormwater facilities. The Tabor to the River project where this street lies https://www.portlandoregon.gov/bes/47591 saved the city $63M and added multiple benefits. Image by PlanGreen, taken Winter 2018.

I first met primary author, landscape architect, Tom Liptan, in the early 90’s when he gave a presentation for a local builders group on green roofs in Europe. He issued a call for us to start applying green roof technology in Portland. Ultimately, Liptan became the Ecoroof Technical Manager in the Sustainable Stormwater Division of the City’s Bureau of Environmental Services (BES). Today we participate together  in Portland’s Green Roof Info Thinktank (GRIT). He and I were early advocates for restoring Portland area streams—a movement that gave impetus to the practices in this book.

This book is not just about Portland and its 7,000 LSM facilities. It’s about a design philosophy that puts the water in the landscape rather than storm drains and pipes. And it uses examples of LSM design from all over the world. Although it has lots of information you’d find in a manual: site assessment, site design, construction, inspection, cost considerations, operations and maintenance—it’s style and unusual organization makes it far more interesting than most manuals or handbooks.

As a professional who has long-criticized gizmo green, I appreciate Liptan’s statement that “a good designer relies on principles of design rather than products.” He won my heart when he exhorts us to “look first to native materials and natural systems” and employ “Design with native plants first and foremost.” It’s not immediately apparent to me that many designers in Portland actually do that—so Liptan and I have a lot more exhorting to do. I’m hoping this book and my review will help.

Sustainable Stormwater Management is organized into two major sections: Landscape Stormwater Design: Water Management from a Landscape Architectural Perspective and Landscape Stormwater Management: Vegetative Approaches to Water Management. The four chapters of the first section cover guiding principles, economics, policy and politics and something of an exhortation to the landscape architecture profession that Liptan sees as the potential leaders of this movement.

It is true that landscape architects have a jealously-guarded stranglehold over specifying plants in commercial facilities in Oregon. As a streams and natural areas restoration volunteer and native plant/ecology focused tour leader, I throw up my hands about this stranglehold every time I examine a rain garden or stormwater planter facility in Portland and see mostly over-used, alien ornamental species—some of which are invasive elsewhere. And I’ve spent much time reporting deliberately planted INVASIVE species in the past.

I now advocate that only those trained (formally or informally) in ecological restoration be allowed to design Portland’s stormwater facilities. (Just like most architects get little training in urban design, most landscape architects get little training in plants before they get their credentials—though the latter seems to be a more tightly kept secret.) Liptan admits this later in the book: Addressing the engineering, architecture and landscape architecture disciplines: “Water, soil and plants as stormwater management elements are new territory and we all have a lot to learn”(p249). “Good designers are not born but educated. . .Better education for designers and city review staff can reduce the waste of money and space.” (p250) Portland would do well to reward and learn from those of us who agree with Liptan.

The far longer second section, Landscape Stormwater Management: Vegetative Approaches to Water Management, has most of the data, tables, rules of thumb and cautions that you might find in a manual. But, with its pleas for further research, rallying cries for creative approaches, page-after-page of captioned photos and its call to design with nature using native materials, this book goes beyond a manual.

Sandy Boulevard Rain Garden

Sandy Boulevard Green Street Rain Garden in Hollywood Neighborhood of Portland. Image by PlanGreen.

Chapter 5—Water-Accepting Landscapes—is the chapter that covers Rain Gardens and Stormwater Planters, Green Streets, and Rainwater Harvesting amongst other topics. Liptan barely uses the term bioswale conceding that it is like a long rain garden. Rather he distinguishes between rain gardens with their sloped sides and planters with their vertical structural sides. Besides that there are three types of either system: 1) infiltration landscapes, 2) partial infiltration landscapes, and 3) flow-through landscapes.

Although Liptan devotes only a half page of text under the heading “Green Street” he does have ten pages with captioned photos of green streets.   The reader can find more green street commentary in his discussions of Nashville’s Deaderick Street, Seattle’s SEA Street, Ballard (Seattle) Roadside Rain Garden Project, Portland’s Tabor to the River, Halsey Green Street and Headwaters at Tryon Creek projects. In fact much of the latter half of Chapter 5 on Site Design is devoted to making green streets work better—covering such areas as site assessment, sizing, directing flows, plantings and soils, construction, plumbing, cost considerations and operations and maintenance (O&M). (Although I understand “The intent is to focus on the outcome of the approach rather than a specific type of implementation. . .,” I found this organization a bit confusing.)

I’ve long been impressed by Tom Liptan’s minimalist approach: “The ideal LSM design should never need irrigation, pruning, or fertilization.” He cautions that O&M plans must state explicitly how plantings should be managed, otherwise most landscape contractors will default to their standard approach: “Spray it, soak it, mow it, blow it away.” Ninety percent of street planters in Portland are not irrigated—resulting in huge O&M savings. (However, as a Green Street Steward in downtown Portland, last summer I was begging nearby retailers to water the downtown planters I steward so that they wouldn’t lose any more plants.)

Most of Chapter 6—Vegetative (Living) Cover of Impervious Surfaces—is devoted to what Portland

Central Library Ecoroof in downtown Portland

Central Library Ecoroof in downtown Portland. Image courtesy of Timber Press.

calls ecoroofs, with Liptan using the more generalized term “vegetative roofs” to appeal to a wider audience. However he moves through vegetative walls, vegetative planters, trees, and vines before returning to research on vegetative roofs and then to their design.

He is again minimalist: Simpler vegetative roof designs found in Europe are “as good or better than most North American designs.” I would be disappointed if I didn’t see the Red Cinder Ecoroof design that Liptan developed in Portland. It’s comprised of a moisture mat, soil, and sedums planted in red cinder mulch. It’s low cost, low-maintenance, self-sustaining with no irrigation and adaptable to any roof or membrane system AND it protects the roof membrane, manages stormwater and creates habitat. “The sedums with the red cinder retard colonization by other plants for many years,” maintains Liptan.   Some additional recommendations he makes for vegetative roofs: 1) some kind of mineral mulch if not red cinder—for both moisture retention and shading the soil; 2) integrate solar panels on your roof so the plants can benefit from the shade; 3) manage solar reflections on vegetation where possible—one solution is to cover dead plants with a thin layer of rock to protect the soil and perhaps allow some plants to return.

Tanner Springs Park

Tanner Springs Park doesn’t really daylight Tanner Creek, just replicates such daylighting. But the nearby nature it brings in is great for education. Image by PlanGreen.

Chapter 7 asks the reader to think about how much impervious surface we really need then moves on to discussing porous pavement, depaving and stream daylighting. Liptan sees a bright future for buried creeks to reappear in our cities proclaiming that “A daylighted stream can be the nexus for the dramatic green transformation of an entire neighborhood.” Both the daylighting and depaving movements have been led for many years by unpaid volunteers who have formed non-profits and enlisted more volunteers to get the work done. I’m glad to see Liptan exhorting design professionals to do more in this arena.

Liptan’s is a captivating vision for change in the way we design/re-design our cities. I hope more designers and advocates too will take to heart a fragment from the book that is going up on my bathroom mirror: “…the door to creativity stands open. Enter unencumbered by the boxes of conformity, and be amazed.”

____________

Mary Vogel is a CNU accredited planner and founder of PlanGreen, a Woman Business Enterprise in Portland, OR that has paddled upstream for years to bring ecosystem services to excellent urban design. After achieving on-the-ground restorations and some important policy accomplishments in several of Portland’s and the region’s long-range plans pro bono, she would like to get paid work—perhaps outside of Oregon where she can best use her skills.

Toward Implementation of Green Infrastructure in Japan

Jan. 22, 2018

In this presentation I review the paper “Toward Implementation of Green Infrastructure in Japan Through the Examination of the City of Portland’s Green Infrastructure Projects” by Takanori Fukuoka and Sadahisa Kato. I add to the authors’ three recommendations with three recommendations of my own based upon my knowledge of Portland’s green infrastructure. The paper was originally published in the Journal of the Japanese Institute of Landscape Architecture.

Dr. Vivek Shandas and I received an email from Sadahisa Kato that read: “Tak and I are in the center of the Japanese GI movement. We’ve been trying hard to connect academics, industry people (developers), and policy makers. We are seeing more and more public symposiums on GI. We’ve also published the first comprehensive GI book, filled with case studies– together with 40 authors.

Fukuoka and Kato first set the historical context by examining some of the federal and local events that led Portland to undertake such a wide-ranging green infrastructure program. The history included the federal Clean Water Act of 1972, the development of US Environmental Protection Agency’s Low Impact Development program in the 90’s, and EPA’s Innovative Wet Weather Grants in 2005. At the local level, the history included the Combined Sewer Overflow lawsuit in 1991, the creation of Bureau of Environmental Services Sustainable Stormwater Division in 2002, Water Quality Friendly Streets in 2003, the Watershed Management Plan in 2006 and the Grey to Green Initiative in 2008. They do not list the National Invasive Species Act of 1973 nor the listing of various species of salmon in 1998 that were further impetus for Portland’s program.

Their Case Study Research is based upon Interviews, Discussion, Site Visits, and Categorization. Their categorization is based upon project types, project information, managed stormwater areas, implemented stormwater tools and environmental benefits from the projects.

The ten sites Fukuoka and Kato categorized based upon the previously mentioned criteria are viewable in the above list.  This is a good mix of relatively old and new facilities of various types.

The green street benefits the authors chose to emphasize are viewable above.

This is one of three photos included in the paper: a flow-through planter at the west edge of the PSU campus. The plant in the foreground (lower left corner) is Nandina (aka Heavenly bamboo). When I first returned to Portland in 2007, the City had been planting it in nearly all GS facilities. I asked them over and over again to STOP this practice as the plant is invasive from Washington, DC to Florida—and possibly soon here. I haven’t seen any recent GS plantings of Nandina by the City, so someone may have listened.

This rain garden green street facility is set back from the street in a location that had empty space because of the street configuration. Rain gardens often add a park-like quality to these leftover spaces—in addition to filtering stormwater.

This photo shows one of Portland’s earliest green roofs—located on the Multnomah County Headquarters Building. Plant selection criteria included adaptability to roof conditions, ecological function, local availability, drought tolerance, seasonal interest, aesthetics, and maintenance requirements. I hope that habitat for native species and biological diversity are part of ecological function.  Ekorufu is the Japanese spelling for Ecoroof—a word popularized by the City of Portland.

Fukuoka and Kato Recommendation One for Japan: For each planning, design, construction and management phase:  1. Use multi-departmental teams AND 2. Stress flexibility and cooperation.

Fukuoka and Kato Recommendation Two: Plan and design for: A stormwater management manual defining criteria for sustainable stormwater management for new development and redevelopment, public and private AND A series of stormwater management manuals with a wealth of illustrations and examples from Portland, with a focus on: Architecture; Construction outside of the site; and References in urban scale

I was somewhat relieved that illustrations and examples from Portland did not include PLANTS although I would have liked to see more discussion of plants in the paper

Fukuoka and Kato Recommendation Three: Actively promote: Grants for pilot projects with a focus on public facilities AND An aggressive subsidies menu which also targets private business.

I first summarize my recommendations to Japan

  1. Focus on mimicking nature, not slick design
  2. Consider focus on NATIVE PLANTS to create biodiversity
  3. Consider using fungi to capture toxins

My Recommendation #1:  To focus on mimicking nature—not slick design, stress the need for designers—both municipality-employed and consultant—to have training in: ecological restoration; native plant horticulture and perhaps even a bonus for mycoremediation –using fungi to take up toxins…

Before today when most facilities are done in-house, Portland geared its Requests for Proposals to landscape architecture and civil engineering firms rather than ecological restoration firms when it sought consultants. The private sector still does.  The City’s in-house staff does not necessarily have such training either.

My Recommendation #2: Consider More Focus on Native Plants to Create Biodiversity

While the authors mention the creation of biodiversity as a function of Green Streets, they don’t address plant species—a vital part of creating biodiversity. In another paper, Sada says “These scattered green spaces, “bits of nature,” even if they are not connected, can increase the overall habitat quality of the urban matrix.”

YES! Green Streets CAN increase the overall habitat quality of the urban matrix, but only if they are designed to do so by professionals who know ecological restoration. I’ve been fighting for years to get Portland to use only NATIVE plant species. Native plants are the base of the food chain because the larvae of many native insects need native plants to develop. Insects are in turn the base of the food chain for birds and other native wildlife. This slide of a Green Street on East Burnside does show largely native plants.

Yellow flag iris was first planted in the stormwater planters on the opposite side of the plaza from what’s shown here at South Waterfront—a private passageway, but subsidized and approved by the City of Portland. After much effort on my part over a couple of years, they were finally removed, but not before much damage was done. I recently discovered that they have volunteered in this planter across the way, so it’s still there. The sunny area in the background of the first slide is the Willamette River. With the river so close by, you can see why Iris pseudacorus has now shown up at the mouth of tributary streams like Tryon and Stevens Creeks and tributary rivers like the Clackamas and Tualatin Rivers. There it degrades fish habitat and bird nesting and rearing sites.

Portland now has Iris pseudacorus on its invasive list, BUT it lists Iris ensata as an alternative—a plant ranked as an invasive by USDA so it is NOT an appropriate alternative, even if not yet invasive in Oregon. Multiple species of Cotoneaster are listed as invasive by the California Invasive Plant Council. It seems irresponsible to approve the planting of ANY species of Cotoneaster (the plant in the foreground of the photo on the right) on a major flyway like the Willamette River.

My Recommendation 3: Consider Using Fungi to Take Up Toxins and Improve Soil

Portland Green Streets currently need their top layer of soil removed and replaced periodically to stay permeable and also so that toxins they accumulate will not kill plants. Japan might consider some pilot projects in mycoremediation—as some mushroom and fungal species can both transform the toxins captured while keeping tilth in the soil. The photo shows fungal mycelia decomposing twine made of wood fibers. Those same mycelia can do a great job of decomposing polycyclic aromatic hydrocarbons and other toxins from motor vehicles as well—even heavy metals. I have written about mycoremediation research—including Washington County, Oregon’s Clean Water Services on my blog: PlanGreen.net/blog. Look for mycoremediation blogs from May 2015 to Aug 2015.

Portland has much that is great in its green infrastructure efforts. But many of its 1900+ Green Streets could do much better at increasing habitat and biodiversity through the use of native plants–and perhaps mycoremediation. It is my hope that Japan will show us how by putting biodiversity front and center in its GI program as both preserving biodiversity and installing/protecting green infrastructure are crucial to addressing climate change—and keeping snow on these two iconic peaks. I also hope that those students in Portland viewing this video will someday take over the bureaucracy and work to change the issues this presentation points out.

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 DonIn 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.

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

 

King Stropharia w/mycelium

Mycoremediation: Dharma Rain Zen Center – Part 1

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 work.  Your dollars will be matched dollar for dollar.  I hope you will help if you can!

May 6, 2015, Portland, OR – updated May 18, 2015

It would be useful to read my Jan 2014 Mycoremediation: Cleaning Soils and Water along the Willamette River! blog in conjunction with this blog.

I was once quite active in the Oregon Mycological Society, but the need to be more focused on my profession of urban planning saw me let my membership lapse.  I recently renewed it and, to my delight, I’ve discovered a new wave of young members who share my interest in mycoremediation–using mushrooms to clean soils and water.

Dharma Rain Zen Center Mycoremediation Biobags

Dharma Rain Zen Center Mycoremediation Biobags

One OMS member,  Jordan Weiss, recently lead a workshop at the Dharma Rain Zen Center in NE Portland.  In the 2.5 years that this Buddhist group has owned this 14 acre former landfill, they have made a remarkable start to its ecological restoration as evidenced by the dried Himalayan blackberry canes lining the ravine that they are now planting in native plants and trees–and in mushrooms.

Turkey Tail, a whte rot fungus, decomposing a fallen log in forest

Turkey Tail, a whte rot fungus, decomposing a fallen log in a forest in Astoria, Oregon. It leaves the log feeling like a wet sponge ready to be wrung out.

Jordan gave a bit of a lesson in mycology withan emphasis on white rot fungi because they are such fast soil-builders and because they are particularly effective in breaking down aromatic pollutants (toxic components of petroleum), as well as chlorinated compounds (certain persistent pesticides).  A number of species fall into the category of white rot fungi, including three that we dealt with at the workshop:  Oyster mushrooms (Pleurotus ostreatus) and Turkey tails (Trametes versicolor) and King Stropharia (Stropharia rugoso-annualata).

 

The below ground part of some mushrooms–the mycelia–have been shown to consume chemical toxins such as PAHs and bacteria such as E-coli.  Of the eight species of mushroom Paul Stamets team tested in an EPA funded study, “one clearly demonstrated resilience to harsh environmental conditions and a second showed promising characteristics. These species may therefore be considered as technically feasible for stormwater treatment applications. “

The below ground filaments (mycelia) of King Stropharia form a thick white net that filters pollutants and consumes them

The below ground filaments (mycelia) of King Stropharia form a thick white net that filters pollutants and consumes them

The most resilient species referred to in Stamets team’s study is King Stropharia (aka Garden giant).  Its mycelia form a thick web that would filter stormwater in the range of 0.07 to 0.10 cm/sec—roughly equivalent to medium grain sand.  So, the Stamets team judged it to be an appropriate filter media for meeting EPA specifications for stormwater management.  Workshop participants found King Stropharia growing along the west-facing hillside of the ravine at the Zen Center where  naturalized spawn on wood chips in a burlap sack was installed two years ago and fruited this spring.  After advocating mycoremediation with the City of Portland for over a year, it was great to see some land stewards actually doing it!

The workshop team then moved on to innoculating cottonwood logs with two species of white rot fungus–Turkey Tail and Oyster (but just one species per log).  This consisted of drilling some quarter-sized holes to a depth of about 0.7 inch, then scooping some mycelia that had been growing on cardboard into the holes and closing it off with wheat paste and a patch.  Jordan said that a best practice is to use inoculated sawdust and/or plug-spawn–but we were making do with what we had.

Drilling holes in cottonwood logs to inoculate them with Turkey Tail and Oyster fungi.

Drilling holes in cottonwood logs to inoculate them with Turkey Tail and Oyster fungi.

In his article, “The Petroleum Problem”,  Paul Stamets envisions the future of mycoremediation in Mycological Response Teams. These teams would consist of knowledgeable and trained people who would use mycoremediation techniques to recycle and rebuild healthy soil in the area. [1]

Jordan cautions that “fungi is a powerful tool in the remediators tool kit, but these and other nature-based technologies will not work if frivolously applied.”  He encourages us to familiarize ourselves with the ecological role fungi have in their natural environment.  I try to teach about such roles every time we see fungi on the Sierra Club outings that I lead.

Oyster mushroom on rotting log in Forest Park--close to NW Industrial District

Oyster mushroom on rotting log in Forest Park–close to NW Industrial District

In the Sttamets’ teams study, the second most successful species found to take up storm water pollutants with some vigor is the Oyster mushroom (Pleurotus sp.).  They grow in some abundance in nearby Forest Park–even in the winter with a hint of snow on the ground when only the toughest are out: English ivy, Swordfern and Douglas fir.  (Yes, I pulled that piece of invasive English ivy immediately after taking its picture!)

 

Oyster mycelium inoculated straw.

Oyster mycelium inoculated straw.

A Portland-based edible mushroom business produces Oyster mycelia inoculated straw as a by-product of its main business. The three recent college graduates who started this business have expressed interest in having their by-product used  in mycoremediation. Their straw is already becoming popular with gardeners and farmers and an important source of income for the business.

Along with Jordan Weiss, I am adding Mycoremediation to what PlanGreen offers.  I plan to work with Jordan’s Mushrooms and other businesses in the Portland area to offer a full range of mycoremediation services from design and planning to installation and maintenance.  We might start with Portland’s NW Industrial District. where students in the Masters in Urban and Regional Planning program at Portland State University are just now completing their project “Getting Green to Work in the NW Industrial District.”  We’re lucky that in the Portland area  green streets with bioretention facilities, green or eco-roofs, green walls, permeable pavement, etc. can now be considered  almost commonplace. This is the green infrastructure the students referred to when I attended their open house in April.  Right now, almost none of our built green infrastructure has mushrooms and their mycelia growing in it.  My team is proposing to change that.  If you have a mycology-based business in the Portland, Oregon area and want to be part of that effort, write me, Mary Vogel, at mary at plangreen dot net.

1.”The Petroleum Problem”. Fungi Perfecti. 3 June 2010. Retrieved 8 May 2013.

Mycoremediation: Cleaning Soils and Water along the Willamette River!

January 10, 2014

CentralReachImageIn a recent workshop the City of Portland, Oregon sponsored for its Willamette River Central Reach Plan , planners asked for habitat enhancement  “projects that would have larger bang for the buck”. . . “projects that would have a multiplier effect in terms of watershed health.”  Mycofiltration—the use of mycorrhizal mushrooms and their mycelia to filter pollutants would rank high on both of these criteria.

Mycofiltration will reduce harmful pollutants commonly found in urban stormwater runoff, such as heavy metals and polycyclic aromatic hydrocarbons, or PAHs. It also eliminates E-coli and other bacteria from pet wastes and waterfowl.  Because adding mushroom spores to remediation sites is very inexpensive and low-impact, it has the potential to be a sustainable option well into the future.

Courtesy of Pacific Northwest National Laboratory Report: PNWD–4054-1

Courtesy of Pacific Northwest National Laboratory
Report: PNWD–4054-1

In most places, stormwater runoff goes directly into streams, rivers and oceans and recycles through the watershed carrying the pollutants with it.  And that it is a big problem for salmon and wildlife survival.  Mycofiltration should be added as a treatment to enhance the activity of existing stormwater management biofiltration cells such as the rain gardens, bioswales and green streets that are plentiful in Portland. By adding Garden Giant (Stropharia rugosoannulata) mycelium to the soil mix, harmful substances that come from heavily trafficked roads such as I-5, I-84 and the motor vehicle bridges in the Central Reach: Broadway, Steel, Burnside, Morrison, Hawthorne, Markham, Ross Island can be transformed into carbohydrates and nutrients — which are actually useful to surrounding soil and plants cheap cialis overnight delivery.

Mycobag w/Pleurotus Photo via Fungi Perfecti @Paul Stamets

Mycobag w/Pleurotus -Courtesy Fungi Perfecti @Paul Stamets

By adding mycofilters to biofiltration cells installed in places where people walk their dogs such as South Waterfront, Riverplace, Waterfront Park, Eastbank Esplanade, etc., E-coli and other bacteria from pet wastes that were not properly disposed of can become a nutrient rather than a pollutant.  Having these mushrooms in the mix can actually help the native plants we are planting in streambank restoration and biofiltration cell facilities grow more robustly.  Instead of dealing with pollutants, their roots are getting more nutrients.

Paul Stamets TED Talk 2008

Paul Stamets TED Talk 2008

I was fortunate enough to meet inspirational mushroom guru, Paul Stamets (here he is giving a TED talk) when he was first starting his farm near Olympia, WA in the 1980s.  He had just wowed the Washington Department of Ecology with the use of mushrooms to clean up the E-Coli and fecal coliform problem caused by his farm animals.  In a single year he had achieved a 99% reduction in pollutants despite doubling the number of animals on the farm.

Since that time, I have gone on to found my business PlanGreen around using ecosystem services to deal with urban stormwater and other environmental problems/opportunities.  I believe, as Stamets does, that the Earth has its own immune system and that we need to learn to better work with that immune system. Although I have been excited about the efforts that Portland and other communities throughout the nation are making in biofiltration—using plants and soil to filter stormwater–I have long wondered why we were not utilizing mushrooms as well.

Fungi Perfecti Phase 1 Report

Fungi Perfecti Phase 1 Report

So, I was thrilled to see “Can Mushrooms Help Fight Stormwater Pollution?” as a link on the Oregon Environmental Council’s “Oregon Stormwater” listserve.  The story (first published on Sightline’s blog on Nov. 13, 2013 , then picked up by Public Broadcasting’s Earthfix) indicates that Fungi Perfecti is looking for partners to help further the research it did under a grant from EPA.  The study itself, Fungi Perfecti, LLC.: EPA Phase I, Mycofiltration Biotechnology Research Summary, concludes that additional research is needed to clearly define treatment design and operating parameters.

That sounds like a challenge that Portland area jurisdictions would relish. So PlanGreen is seeking to broker partnerships between Fungi Perfecti and receptive jurisdictions. Beyond treatment design and operating parameters, some of the issues to be resolved by those partnerships might be[i]:

  • Whether or not the mushrooms grown on decomposing toxic wastes are safe to eat.
  • To what degree of decomposition by mycelium of toxic soils makes the soils safe for food crops [including food for wildlife]
  • How economically practical will it be to remove mushrooms that have hyper-accumulated heavy metals. . .? Which species are best for hyper accumulating specific metals?
  • How to finance/design composting centers around population centers near pollution threats.
Subtitle: How Mushrooms Can Help Save the World

Subtitle: How Mushrooms Can Help Save the World

However, whether or not our cities, ports and other transportation agencies can qualify for the robust monitoring needed for the Fungi Perfecti research, we have enough anecdotal evidence (and PlanGreen and its partners have enough knowledge and materials) to get to the starting gate right now. As Stamets says in his book, Mycelium Running, “Now is the time to ensure the future of our planet and our species by partnering, or running, with mycelium.”


[i] These issues were borrowed from Stamets’ The Petroleum Problem, on the Fungi Perfecti website.

 

Please see May 6, 2015 post titled Mycoremediation: Mushrooms Cleaning Soils and Water in Portland for further information on this topic.