Cost-Effective Resilience - The Grey, the Green and the Ugly - WEAO Influents Article Examines Infrastructure Technology 'Bang for the Buck'

New article in the Water Environment Association of Ontario's Influents Magazine explores the cost-effectiveness on infrastructure technologies, including conventional 'grey' and emerging 'green' approaches for achieving extreme weather resiliency by reducing flood losses in existing communities.

See: article link.


The article provides a brief history of Low Impact Development Best Management Practices (LID BMPs) in Ontario and the assessment of cost in infrastructure projects. New requirements for benefit-cost analysis for flood mitigation projects, such as through Infrastructure Canada's Disaster Mitigation Adaptation Fund, are also discussed. A previous post identifies some of these significant projects (https://www.cityfloodmap.com/2019/03/disaster-mitigation-adaptation-fund.html).

Results of a case study comparing grey, green and blended grey and green technologies are summarized. Details of this analysis are included in a previous post (https://www.cityfloodmap.com/2019/03/an-economic-analysis-of-green-v-grey.html) and were presented at the 2019 WEAO Annual Conference. The case study confirms the cost-effectiveness of conventional grey technologies, consisting largely of storm and sanitary sewer upgrades, and cast doubt on the cost-effectiveness of emerging green infrastructure or LID BMPs, considering full lifecycle costs. Limitations in the assessment of technical effectiveness green infrastructure in insurance industry research, as summarized in a previous post (https://www.cityfloodmap.com/2018/10/media-identifies-gaps-in-insurance.html) and in my NWWC2018 presentation Storm Warts, the Floods Awaken (https://www.cityfloodmap.com/2018/11/storm-warts-floods-awaken-new-hope-for.html) are briefly touched upon.

The move toward more rigorous assessments of project cost effectiveness is keeping with the Made-in-Ontario Environment Plan that intends to avoid the frustration of "policies and programs that don't deliver results". Such assessments are also consistent with Ontario's Long Term Infrastructure Plan 2017 that suggests that infrastructure proposals should be "supported by robust and consistent business cases".

1 comment:

  1. In case you're searching for cash to spare, your costs could Read things be a gold mine. Here's one incredible spot to look: the normal vehicle proprietor burns through $9,000 every year to possess and work their vehicle. Is there any chance you could scale Read back to a littler, more eco-friendly vehicle, purchase a quality trade-in vehicle as opposed to a fresh out of the plastic new one, draw nearer to work, vehicle pool, or take travel? Here's another method to consider this: the normal Canadian vehicle credit installment is $570 every month. On the off chance that somebody contributes this from age 25 to 65 in common Information to be shared assets or a file finance and gets a normal pace of return of 11% (what the S&P 500 has done in the course of recent years), they will have over $4.2 million at age 65. Is continually Read things having another vehicle worth $4 million to you? Think about purchasing a quality trade-in vehicle and contribute the rest. Your old vehicle installment I should read again could actually wind up financing your retirement (incidentally, it's never past the point where it is possible to begin sparing. On the off chance that the individual right now this vehicle installment from age 40 to 70, they'd in any case have a million dollars).

    ReplyDelete