Analyze

CITIZEN SCIENCE

Epistemic negotiation

Stakeholders (indigenous groups, activist, scientist, scholars, etc)

Assessing the PM2.5 impact of biomass combustion in megacity Dhaka, Bangladesh - PubMed (nih.gov)

This article is about crop burning in Dhaka, Bangladesh and attempts to figure out if there is more or less harmful PM2.5 particulate air pollution caused by either fossil fuels or biomass, and during which season is one or the other higher in the air pollution it produces. During monsoon season, fossil fuels lead in the most PM2.5 releases at 44.3%. When it is not monsoon season and is the winter season, the percentages are way higher for PM2.5 air particulate releases at 41.4% for the remainder of the year. Across the globe, there are now people stepping up to uncover the true and real environmental and health impacts this harmful particulate byproduct causes in different parts of the world and with differring weather conditions than what we see in North Carolina. 

https://www.researchgate.net/publication/351209404_PM25_Emissions_from_…;

This study is set in South/Southeast Asia and uncovering that, when trying to count the percentages of PM2.5 put off during biomass, the true amount of emissions were being gravely undercalculated. Specifically rice straw burning becuase the amount burned varied so much because of different harvest and burning practices that it just wasn't taken into consideration. What this study does is go bottom up using these strategies: "subnational spatial database of rice-harvested area, region-specific fuel-loading factors, region, and burning-practice-specific emission and combustion factors, including literature-derived estimates of straw and stubble burned"(Lasko et al. 2021, 1). 

The most common air pollutants are called criteria pollutants and are regulated by the Clean Air Act and the EPA. These pollutants are: particles, ozone, nitrogen oxides, sulfer dioxide, carbon monoxide, and lead. The EPA have sections under the CAA that help regulate factories and air pollution in the environment. For example section 108 requires the EPA to identify the pollutants that are criteria pollutants, listed above, and determine if where they are coming from and if they "endander public health or welfare". Under section 109 the EPA had to set standards across the board for air pulltion in regard to human health and to the environemtn sperately (Christopher D. Ahlers 2016, 51-52).  There are many more sections that go into detail about what the CAA can do and what the EPA members are required to do as well. 

How are Data Gaps Worked Around:

Sarnia, and the surrounding area around chemical valley, have 9 air monitoring stations in which air pollutants are monitored from the nearby petrochemical complex. Until 2017, only data from one of these stations (the one on Christina Street in downtown Sarnia) was publicly available. This created a gap in accessiblility of important data for sarnia and the nearby AFN residents. In September 2015, the Clean Air Sarnia and Area group launched as a "community advisory panel made up of representatives from the public, government, First Nations, and industry, who are dedicated to providing the community with a clear understanding of ambient air quality in the Sarnia area." This group works to improve air quality in Sarnia by making information about air quality publicly available and by making recommendations to relevant authorities. In 2018, this group launched the website: https://reporting.cleanairsarniaandarea.com/ (also uploaded as an artifact) which allows public to access data from the air quality monitoring stations and understand how air quality compares to Ontario's standards. This site works to fill the gap of publicly available air quality data in Sarnia.

This report from Ecojustice shows a decline in air pollution compared to Ecojustice's first report released in 2007 for the area around Chemical Valley, yet Sarnia industries continue "to release far more pollution, and in particular far more SO2 , than comparable U.S. refineries." One contributor to the continued excessive emissions is Ontario's lagging air quality standards. The report notes that "Ontario’s AAQC and air quality standards are lagging behind current science on the health impacts of air pollutants, which may put the health of residents at risk." The report highlights pollutants where Ontario's standard is above the national standard or where Ontario has no standard at all. Additionally, Sarnia's benzene emissions are exempt from Ontario's health-based standard for this chemical and are instead regulated by  "an industry technical-based standard" allowing benzene levels to be far higher than the health-based standard. The lagging, lack of, or exemption from regulation undercut efforts in monitoring and reducing emissions to a "safe" level as what is considered "safe" by standards is out of line with what is considered "safe" by health and other standards.