� Developed 2018 and 2019 Baseline Inventories for both airports with summary energy , water , municipal solid waste , and transportation metrics
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Conducted a cost-benefit analysis of replacing diesel and CNG buses with electric buses
Compared ground level ozone impacts of hybrid electric vehicles with traditional internal combustion engine vehicles to support efforts to add hybrid vehicles to our fleets
Initiating an airside electrification study related to ground service and other airside equipment to determine options for increasing the use of electric vehicles and implications for our electric infrastructure
Initiating resiliency assessments at both airports to help us better understand areas of potential vulnerability and to be better prepared to manage critical infrastructure during power outages
Gathering data for an updated cost-benefit analysis for the use of Combined Heat and Power ( CHP ) at Dulles International
Concessionaire Sustainability Survey
We conducted a Concessionaire Sustainability Survey in 2019 and received encouraging feedback from concessionaires on their interest in wanting to reduce water and energy use , recycle more , and consider composting initiatives . We will continue to engage our concessionaire partners through additional surveys and focus group meetings on sustainability as we seek to present a consistent experience for our airport customers throughout our facilities .
Best Practices Opportunities
As is illustrated by the list of existing activities , we are proud of what we have accomplished to date . However , there are many opportunities that exist to increase our sustainability , improve efficiency , and decrease our impacts on the environment . Some of the initiatives we are considering include the following .
Review Our Current Operational Procedures , Contracts , and Leases to Add Sustainability Requirements
Although we are currently focused on updating the Design Manual , we will be turning our attention to the other contracts , leases , and agreements that we negotiate with our airlines and other airport partners ; and our internal operational procedures , to determine what language , if any , we can add to encourage more sustainable practices . This will be done where appropriate rather than a blanket policy that all new agreements need to contain updated sustainability requirements . We of course need to strike a balance between promoting our sustainability interests with that of managing the burdens we may be placing on our staff and partners . Sustainability can come at a cost , which is ultimately passed on to the end consumer — our customer . It can also imply lower revenues for the Authority if it impacts profitability of our concessionaires . That is why we do not intend to simply require more sustainable practices on the part of our concessionaires and staff , but preferably look for ways where we can partner with them on such practices . Reducing the amount of MSW generated at our facilities by reducing packaging , plastics , and Styrofoam use is one area in which we will need to partner with everyone . Ensuring that our contracts with outside cleaning companies require the purchase of environmentally preferred products ( i . e ., cleaning supplies , paper , etc .) is also an area for partnership as we know these products are often more costly . In addition , just like our own internal telecommuting strategies , we would like to explore opportunities with our concessionaires regarding decreasing the frequency of commuting for their own employees and / or promoting shorter commutes . As we continue
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