In Louisiana, the factories that make the chemicals and plastics for our building products are built literally upon the bones of African Americans. Plantation fields have been transformed into industrial fortresses.
A Shell Refinery1 sprawls across the former Bruslie and Monroe plantations. Belle Pointe is now the DuPont Pontchartrain Works, among the most toxic air polluters in the state.2 Soon, the Taiwan-based Formosa Plastics Group intends to build a 2400-acre complex of 14 facilities that will transform fracked gas into plastics. It will occupy land that was formerly the Acadia and Buena Vista plantations, and not incidentally, the ancestral burial grounds of local African American residents, some of whom trace their lineage back to people enslaved there.3
Formosa has earned a reputation of being a poor steward of sacred places. Local residents have petitioned the Governor to deny permits for the facility, citing a long list of environmental health violations in its existing Louisiana facilities, including violations of the Clean Air Act every quarter since 2009.4 The scofflaw company was found to have dumped plastic pellets known as “nurdles” into the fragile ecosystem of Lavaca Bay on the Gulf of Mexico for years – leading to a record $50 million settlement with activists in that community in 2019.5
In the Antebellum South, formerly enslaved people often homesteaded on lands that were part of or near the plantations they once worked. They established communities of priceless historical and cultural worth, towns such as Morrisonville, Diamond, Convent, Donaldsonville, and St. James. Donaldsonville, Louisiana, is the town that elected Pierre Caliste Landry, America’s first African American mayor in 1868, just three years after the end of the Civil War. This part of Louisiana holds many layers of complex and deep African American history.
But in the last 75 years, since World War II, these communities have been overrun by petrochemical industry expansion enabled by governments wielding the clout of Jim Crow laws to snuff out any opposition or objection. Towns like Morrisonville and Diamond have been bought up to accommodate plant expansion. Residents have been forced to move out, their history and heritage literally paved over. It wasn’t until 1994 that the River Road African American Museum was established to preserve and present the history of the Black population as distinct from plantation representations of slavery. According to Michael Taylor, Curator of Books, Louisiana State University Libraries: “Only in the last few decades have historians themselves begun to appreciate the complexity of free black communities and their significance to our understanding not just of the past, but also the present.”6
Virtually every building product we use today contains a petrochemical component that originates from heavily polluted communities, frequently home to people of color. As the green building movement searches for ways to enhance diversity, inclusion and equity, how might it address the legacies of injustice that are tied to the products and materials we use every day?
Architect, Zena Howard, FAIA, offered insight in her 2019 J. Max Bond Lecture, Planning to Stay, keynoting the National Organization of Minority Architects national conference. Howard, known for her work on the design team for the breathtaking Smithsonian National Museum of African American History and Culture, most often works with people in communities whose culture and heritage were “erased” by urban renewal in the 1960’s. In Greenville, North Carolina, she looked to people from the historically African American Downtown Greenville community and Sycamore Hill Missionary Baptist Church Congregation to guide the planning and design process for a new town common and gateway plaza. The goal was not to “replicate” the lost community, but to bring its history and present day aspirations to life in the new design. In Vancouver, British Columbia, the development plan for a neighborhood founded by African Canadian railroad porters included an unprecedented chapter on “reconciliation and cultural redress.” The key to such efforts, according to Howard is co-creation and meaningful collaboration, whose Greek roots, she notes, mean “to labor together.”
How might we labor together to address environmental injustice when evaluating the overall healthfulness and equity of our building materials? The precedent of “insetting” suggests an approach.
Insetting has been pioneered by companies whose supply chains rely upon agricultural communities across the globe. According to Ceres, insetting is “a type of carbon emissions offset, but it’s about much more than sequestering carbon: It’s also about companies building resiliency in their supply chains and restoring the ecosystems on which their growers depend.”
In previous columns, I’ve addressed concerns about the social in industrial communities, e.g., proposals that perpetuate disproportionate pollution impacts when buying offsets rather than addressing emissions from a specific facility. Applying the “insetting” approach we might ask our materials manufacturers—and the communities that are home to the building materials industries—what steps can we take to encourage manufacturers to “labor with” communities seeking environmental justice, such as those along the Mississippi River? Can we, together, resurrect and restore their history, reconcile and redress historical wrongs, and build a healthier future for all?
To learn more about the history and present day conditions of Cancer Alley, see these excellent articles from The Guardian and Pro Publica: https://www.ehn.org/search/?q=cancer+alley
You can watch to Zena Howard’s J. Max Bond lecture, Planning to Stay, here: https://vimeo.com/378622662
You can learn more about the River Road African American History Museum here: https://africanamericanmuseum.org/
Discover how bisphenols and phthalates, commonly used in plastics for added strength or flexibility, can disrupt hormone function, and learn ways to reduce their use for improved health in this informative video.
The Future of Petrochemicals report explores the role of the petrochemical sector in the global energy system and its increasing significance for energy security and the environment, highlighting the need for attention from policymakers.
Polyethylene is the world’s most common plastic. It is used in packaging, food and beverage containers, and consumer products.
Building product manufacturers sometimes use post-consumer recycled polyethylene bags and bottles in pipes and plastic lumber. This scrap usually has minimal contents of concern, but products like detergents stored in plastic packaging can remain. So-called “bio-degradation” agents in plastic bags also contaminate this feedstock and should never be used. The plastics recycling industry is developing protocols to screen out residual contaminants. Of greatest concern: Most polyethylene goes unrecycled in the United States due to problems in supply chain controls and the low price of virgin resins. This report examines ways to optimize the use of post-consumer polyethylene in building materials.
Not all recycled content materials are created equal – especially when it comes to recycled plastics.
In a report released by StopWaste and the Healthy Building Network, we take an in-depth look at the health implications, supply chain considerations, and potential to scale up recycling of the world’s most common plastic: polyethylene (aka PE). [1] This report, Post-Consumer Polyethylene in Building Products, is the latest installment in our Optimizing Recycling series.
Polyethylene is a material widely used in product packaging, beverage containers, and myriad consumer products. High Density Polyethylene (HDPE), Low Density Polyethylene (LDPE), and Linear Low Density Polyethylene (LLDPE) are all readily recyclable in California. Polyethylene plastic scrap bottles and plastic bags usually have minimal contents of concern and are easily processed into feedstock for new products, including building materials. Despite the great potential for recovery of PE, sizeable barriers stand in the way of a lot more recycling.
The explosive growth in virgin ethylene production on the U.S. Gulf Coast, driven by cheap energy, has meant that most post-consumer scrap PE is either landfilled, incinerated, or sent overseas for processing. [2]
Industry trends in recycling collection technology are also undermining the value of post-consumer polyethylene feedstocks. Pipe and plastic lumber manufacturers in the U.S. require supplies that have minimal amounts of contaminants such as volatile residual substances in packaging and other types of plastics. Yet proportionally less “good material” is coming out of the plastic waste recycling stream due to the rising use of municipal single stream recycling over the past decade. Mixed and low quality scrap materials that come from single-stream recycling centers are more likely to be exported than sorted and screened for high-quality polyethylene scrap. As a result, more recovered plastic bags are exported than processed domestically. [3]
Additives used for plastics can turn into contaminants when recycled. As seen with other recycled content materials, feedstocks with less contamination have an increased potential for recyclability as well as increased value to purchasers. [4] For PE, contaminants come in the form of residual materials from packaging (residue from bottles that contained pesticides, for example), or from additives used in manufacturing to achieve certain product characteristics. Perhaps the most problematic additive to PE products are so-called biodegradation additives used in plastic packaging. These additives (but not the rest of the plastic) degrade when exposed to sunlight or other environmental conditions. When these products are collected and used as post-consumer recycled feedstocks in products like pipes and decking, however, these additives can lower the reliability and value of a manufacturer’s product. This is why, in our report, we recommend that plastic manufacturers stop using degradability additives in all new polyethylene.
The recycling industry has made significant strides toward a closed loop material system in which the materials that make up new products today will become the raw material used to manufacture products in the future. However, contamination in some sources of recycled content raw material (“feedstock”) contain potentially toxic substances that can devalue feedstocks, impede growth of recycling markets, and harm human and environmental health.
Since May 2014, the Healthy Building Network, in collaboration with StopWaste and the San Francisco Department of Environment, has been evaluating 11 common post-consumer recycled-content feedstocks used in the manufacturing of building products. This paper is a distillation of that larger effort, and provides analysis on two major feedstocks found in building products: recycled PVC and glass cullet. This research partnership seeks to provide manufacturers, purchasers, government agencies, and the recycling industry with recommendations for optimizing the use of recycled content feedstocks in building products in order to increase their value, marketability and safety. This report was prepared in support of a research session at the 2015 Greenbuild conference in Washington, DC.
New HBN research reveals that legacy toxic hazards are being reintroduced into our homes, schools and offices in recycled vinyl content that is routinely added to floors and other building products. Legacy substances used in PVC products, like lead, cadmium, and phthalates, are turning up in new products through the use of cheap recycled content.
Funding for research on post-consumer PVC feedstock was provided by StopWaste and donors to the Healthy Building Network (HBN). It was conducted using an evaluative framework to optimize recycling developed by StopWaste, the San Francisco Department of the Environment, and HBN. This briefing paper on post-consumer recycled PVC is a prequel to a forthcoming white paper by this new collaboration.
This paper was prepared by Perkins+Will, in partnership with Healthy Building Network (HBN), as part of a larger effort to promote health in the built environment. Indoor environments commonly have higher levels of pollutants, and architects and designers may frequently have the opportunity to help reduce or mitigate exposures.
The purpose of this report is to present information on the environmental and health hazards of PVC, with an emphasis on information found in government sources. This report is not intended to be a comprehensive analysis of all aspects of the PVC lifecycle, or a comprehensive comparative analysis of polymer lifecycles. Rather, in light of recent claims that PVC formulas have been improved by reducing certain toxic additives, this paper reviews contemporary research and data to determine if hazards are still associated with the lifecycle of PVC. This research has been surveyed from a perspective consistent with the precautionary principle, which, as applied, means that where there is some evidence of environmental or human health impact of PVC that reasonable alternatives should be used where possible. Furthermore, and more generally, this paper is intended to build greater awareness of this common building material.
This Healthy Building Network (HBN) Research Brief examines replacements for phthalate plasticizers in Polyvinyl Chloride (PVC) building materials. Plasticizers are added to PVC to make it flexible, but since they are not tightly bound to the PVC molecules, they migrate from PVC products.
Phthalates, the most commonly used plasticizers in PVC, are known endocrine disruptors – chemicals that interfere with hormone signaling, which is especially critical to early childhood development. Additionally, many phthalates are known carcinogens and reproductive and developmental toxicants. Exposures to these toxic plasticizers from PVC products can occur throughout their lifecycle. Therefore, it is crucial that PVC products containing phthalate plasticizers be eliminated from the built environment.
Arlene Blum is a biophysical chemist, author and mountaineer.
She is the founder and executive director of the Green Science Policy Institute which works with scientists, government, industry, and non-profits to facilitate more informed decision-making about flame retardants and other chemicals used in consumer and building products.
Healthy Building Network founder Director Bill Walsh caught up with Elaine, recording the following conversation:
Bill Walsh:
How did you get started working on flame retardants?
Arlene Blum:
Thirty years ago, as a researcher at the University of California, Berkeley, I published a paper in Science magazine showing that “Tris” flame retardants in children’s sleepwear caused mutations, were possible cancer hazards, and migrated from pajamas into children. The flame retardants were removed from children’s sleepwear in 1977, but chlorinated tris is now back in use in foam in furniture and other products.
BW:
Why are you so concerned about flame retardants in building materials?
AB:
If a building contains halogenated flame retardants in the insulation, they can filter into the building throughout its life and also form toxic dioxins if the building burns.
I know it’s a real dilemma for people when they learn that plastic insulation materials, such as polystyrene, polyisocyanurate, and polyurethane, that can help reduce climate change, often contain flame retardants which can cause serious health and environmental harm. But the good news is that this is a problem that can be solved.
Once green building professionals understand the issue, they can move to safer substitutes and strategies that don’t have potential adverse health impacts. In fact of the various groups with which I’ve worked on reducing toxics in products, the green building community has been the most responsive. So I am very happy to have the opportunity to share the message about moving away from the use of halogenated flame retardants at Greenbuild.
The new LEED Pilot Credit on Chemical Avoidance for not using phthalates and halogenated flame retardants inside buildings should accelerate our progress towards healthier buildings.
BW:
You mentioned that this is also a chemical contamination problem that could have negative impacts on our health and well-being at a global level? How?
AB:
Many halogenated flame retardant chemicals are persistent and bioaccumulate especially in humans and animals high on the food chain. It is almost impossible to clean them up once they are out in the world. For example, PCBs, chlorinated chemicals that were also used as flame retardants, were banned in 1977, but very high concentrations can still be found in wildlife and some human populations today. Studies show that human breast milk contains flame retardants, and toddlers have three to four times higher body levels than their mothers.
When tested in animals, many halogenated flame retardants have been found to cause health problems like cancer, reduced fertility and IQ, thyroid disorders, and developmental impairment. Many halogenated flame retardants are also endocrine disrupting chemicals that can harm us at very low concentrations.
BW:
How do you weigh the known benefits today against long term unproven risks?
AB:
In furniture there is no proven benefit. It makes more sense to reduce the sources of ignition with fire-safe cigarettes and candles than to put potentially toxic chemicals in all the possibly flammable materials in our homes. Today the risk of home fires is diminishing due to a 50% decrease in cigarette consumption since 1980, enforcement of improved building, fire, and electrical codes, increased use of sprinklers and smoke detectors. These strategies provide measurable improvements in fire safety without toxicity.
Smoke and toxic gases kill people in fires, more than flames. Research on furniture fires show that while halogenated flame retardants can reduce the time for ignition by seconds, they greatly increase the carbon monoxide, smoke, and soot. The chemicals also release dioxin and related compounds when burned at relatively low temperatures. So the benefits of retarding the fire with toxic chemicals is greatly reduced by the increased fire toxicity and dioxins at the fire scene.
Given the lack of proven benefit in some cases, the risk-benefit calculation on chemical flame retardants can be tenuous even before you start to consider the widespread exposure to these chemicals on a daily basis.
Better methods of reducing fire risks include careful material selection and alternative fire suppression strategies that can be designed into products and buildings.
BW:
How can people take this knowledge and translate it into action?
AB:
When people know about the hazards of the flame retardants that are commonly used in many plastic foam insulations, furnishings and other building materials, they can choose alternative products or push for less toxic flame retardants. When green building professionals make these choices, this will increase the availability and decrease the cost of the alternatives.
Moving the market demand for flame retardants in the huge building sector can also help with policy changes. We have been providing scientific support to change a California furniture flammability standard to provide similar or greater fire safety without flame retardant chemicals.
We also need national chemical policy reform. Because of weaknesses in the Toxic Substances Control Act, which has not been updated since 1976, chemicals are innocent until proven guilty and that proof is almost impossible to obtain. Even asbestos could not be banned. And manufacturers are not required to perform any toxicity tests before putting chemicals into products! Green buildings need to be both energy-efficient and healthy. Reducing the use of halogenated flame retardants will help achieve this and help create a healthier world for us all.