negative repercussions to flora and fauna , we have a well-developed system to not only capture , but sell glycol to a third party for reuse . In the winter of 2018 – 19 , we captured 800,000 gallons of deicing liquid containing glycol . We sold this glycol and received $ 113,000 in return . Since 1999 , we have recovered 16 million gallons of liquid containing glycol at our two airports . Our goal is to continue to increase our collection rate beyond 56 %, as it stands today , if we can do so in a cost-effective manner . As part of that goal , we will complete a new deicing collection system at Reagan National this year .
Project Journey Investments
Along with the energy and water efficiency measures included in Project Journey at Reagan National , we are also making significant investments to minimize our impact on the surrounding environment resulting from this major airport improvement effort . During demolition of hangars to make way for Project Journey , we recovered and safely disposed of more than 290 pounds of refrigerants . In addition , we have installed additional hydrant fuel leak detection systems , oil-water separators , and glycol diversion vaults in line with similar investments previously made at our airports .
Stormwater Quality
In order to protect the Chesapeake Bay Watershed within which we operate , the Authority has installed more than 70 oil-water separators and other water quality improvement structures to help filter sediments and other contaminants from the effluent prior to being discharged back into local waterways . As part of the construction of the fourth runway at Dulles International , we installed five biological treatment units to minimize impacts of stormwater runoff from this project . We are also installing 16 stormwater management facilities along the DTR as part of the Metrorail expansion to Dulles International .
Best Practices Opportunities Reduce Our Solid Waste
While recycling is important , we think there are opportunities to reduce the overall quantity of waste generated at our facilities . Our lowest-cost waste is the ton of waste that is not created . Some of the areas we intend to focus on going forward are the following :
Reduce Packaging
We need to consider how the Authority and our concessionaire partners can reduce the amount of packaging ( i . e . plastics , Styrofoam , pallets , bags , cardboard , etc .) that comes into and is used at the airport . There may be bulk buying opportunities across concessionaires that reduce the number of deliveries . This would have the co-benefit of reducing diesel truck trips to and from our facilities , improving landside air quality and reducing congestion . This may also include minimizing the use of plastic bags and reducing what is provided to the customer in terms of napkins , utensils , condiment packages and similar items that they do not request or need and ultimately throw out . We have only recently initiated these conversations with concessionaires based on the positive feedback received in the concessionaire sustainability survey conducted in 2019 . Near term , we can evaluate a voluntary program with a limited number of food and beverage concessionaires to see if we can demonstrate measurable reductions in package and plastic related MSW . Other airports have banned certain types of packaging and plastics . Rather than take this approach , we prefer to work collaboratively with our concessionaires to see what we can develop on a voluntary basis . As concessionaires are charged for MSW removal , there is an opportunity for them to reduce costs by minimizing waste .
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