Large amounts of breathable particles and nitrogen dioxide (NO2), produced in part by road traffic, can shorten the lifespans of city dwellers. Public transportation systems such as subways have thus seemed like a solution to reduce air pollution in the urban environment.
[bmtextbox type=”warning”]But what is the air like that we breathe underground, on the rail platforms and inside trains?[/bmtextbox] returns the following:
Air-quality in subways can be related much towheel materials and braking mechanisms, as well as to variations in ventilation and air conditioning systems, but may also relate to differences in measurement campaign protocols and choice of sampling sites. 
The cities requst and plan can be read slightly by reading the scipe of the contract the city of Toronto is leting gbout.
Scope of work:
Scope of Work The PM identified in the subway system is different from the PM found in outdoor urban air with respect to its source, composition and characteristics. Given that available reference values for PM are derived from evidence of outdoor PM, additional information will be needed to finalize the methods. Toronto Public Health seeks a consultant or team of consultants to execute the following work:
1. Convene an expert panel that will develop a valid method under a risk assessment framework for estimating the potential health risks associated with exposure to the type of PM found in the subway system.
2. Apply the method established by the expert panel to the air pollutant data collected by the TTC and Health Canada to conduct a Human Health Risk Assessment.
3. Contextualize the findings from the Human Health Risk Assessment in a Rapid Health Impact Assessment focusing on the following areas:
a. Benchmark PM concentrations found in Toronto’s subway system against other similar systems found around the world
b. Examine the health evidence related to passenger exposure to the contaminants of concern
c. Summarize the health impacts (both positive and negative) of commuting through public transportation
d. Review mitigation measures that could be effective or have been used in other jurisdictions.
The ideal consultant or team of consultants would have expertise and experience in facilitation, air pollution, toxicology, Human Health Risk Assessment and Health Impact Assessment. In addition, the consultant will follow scientifically sound approaches for conducting Human Health Risk Assessment and Health Impact Assessment taking into account the unique nature of the population exposure. The consultant or teams of consultants must clearly demonstrate how they and the proposed approach meets the mandatory technical requirements listed in Appendix E.
For complete details see section 3.0 Scope of Work in RFP document.
PROPONENT PROFILE, QUALIFICATION:
The consultant or teams of consultants must clearly demonstrate how they and the proposed approach meets the mandatory technical requirements listed in Appendix E.
For more information on this call, please click on the viewing copy attachment in the Notes Section above.
Viewing Copy 9121-18-7178 Viewing Copy.pdf (918 Kbytes) – Posted on 08/01/2018 09:31:42 AM
