Deicing Case Study. General Mitchell International Airport Milwaukee, WI

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1 Deicing Case Study General Mitchell International Airport Milwaukee, WI

2 Airport Operations Summary Approximately 2,200 acres; Land locked. 5 runways; longest approx. 9,700 feet. Fairly steady increases in enplanements over the last 15 years Scheduled operations up and down Mix of carriers has changed a lot over time.

3 Deicing Operations Summary Highly varied annual snowfall Lots of defrost events Combination of gate and pad deice

4 Deicing Operations Summary - Annual Snowfall

5 Deicing Operations Summary - Aircraft Deicing Areas

6 Deicing Operations

7 Deicing Operations

8 Deicing Operations

9 300, , , , ,000 50,000 0 Annual Glycol Usage 305, , , , , , , , , AVERAGE Recovery Program Season Pure Glycol (Gallons)

10 GMIA ADF Collection Series of different glycol collection techniques Low tech but effective Able to flex as airport operations change Strong relationship with permitting agency and airlines

11 2008/2009 Collection Collection Components Program One Vactor Glycol Recovery Vehicle (GRV) unit Two V-Quip Tow-Behind Mobile Collection Units (MCUs) Central Deicing Pad Northwest Deicing Pad 4 Sewer Balloons 3 Shut off Valves - 2 on the end of Concourse C and one at the end of Concourse E Sump Crock located at the east end of Cargo Storage (6 Frac-tanks = 120,000 gallons) Disposal / Recycling

12 2008/2009 Collection Collection Components Program One Vactor Glycol Recovery Vehicle (GRV) unit Two V-Quip Tow-Behind Mobile Collection Units (MCUs) Central Deicing Pad Northwest Deicing Pad 4 Sewer Balloons 3 Shut off Valves - 2 on the end of Concourse C and one at the end of Concourse E Sump Crock located at the east end of Cargo Storage (6 Frac-tanks = 120,000 gallons) Disposal / Recycling

13 Vactor Glycol Recovery Vehicle (GRV)

14 Glycol Collection/Recovery Activities Using GRV

15 Glycol Collection/Recovery Activities Using GRV

16 2008/2009 Collection Collection Components Program One Vactor Glycol Recovery Vehicle (GRV) unit Two V-Quip Tow-Behind Mobile Collection Units (MCUs) Central Deicing Pad Northwest Deicing Pad 4 Sewer Balloons 3 Shut off Valves - 2 on the end of Concourse C and one at the end of Concourse E Sump Crock located at the east end of Cargo Storage (6 Frac-tanks = 120,000 gallons) Disposal / Recycling

17 V-Quip Tow-Behind Unit Mobile Collection Unit (MCU)

18 Glycol Collection/Recovery Activities Using MCU

19 Glycol Collection/Recovery Activities Using MCUs

20 Emptying MCU into Frac- Tanks

21 2008/2009 Collection Collection Components Program One Vactor Glycol Recovery Vehicle (GRV) unit Two V-Quip Tow-Behind Mobile Collection Units (MCUs) Skyway/RJ Deicing Pad Northwest Deicing Pad 4 Sewer Balloons 3 Shut off Valves - 2 on the end of Concourse C and one at the end of Concourse E Sump Crock located at the east end of Cargo Storage (6 Frac-tanks = 120,000 gallons) Disposal / Recycling

22 Aircraft Deicing Areas

23 Skyway/RJ Deicing Pad

24 Deicing Activities At Skyway/RJ Pad

25 ADF Collection at Skyway/RJ Pad

26 2008/2009 Collection Collection Components Program One Vactor Glycol Recovery Vehicle (GRV) unit Two V-Quip Tow-Behind Mobile Collection Units (MCUs) Skyway/RJ Deicing Pad Northwest Deicing Pad 4 Sewer Balloons 3 Shut off Valves - 2 on the end of Concourse C and one at the end of Concourse E Sump Crock located at the east end of Cargo Storage (6 Frac-tanks = 120,000 gallons) Disposal / Recycling

27 Aircraft Deicing Areas

28 Northwest Deicing Pad

29 Northwest De-Icing Pad

30 2008/2009 Collection Collection Components Program One Vactor Glycol Recovery Vehicle (GRV) unit Two V-Quip Tow-Behind Mobile Collection Units (MCUs) Skyway/RJ Deicing Pad Northwest Deicing Pad 4 Sewer Balloons 3 Shut off Valves - 2 on the end of Concourse C and one at the end of Concourse E Sump Crock located at the east end of Cargo Storage (6 Frac-tanks = 120,000 gallons) Disposal / Recycling

31 Collection System Components

32 Storm Sewer Pumping

33 2008/2009 Collection Collection Components Program One Vactor Glycol Recovery Vehicle (GRV) unit Two V-Quip Tow-Behind Mobile Collection Units (MCUs) Skyway/RJ Deicing Pad Northwest Deicing Pad 4 Sewer Balloons 3 Shut off Valves - 2 on the end of Concourse C and one at the end of Concourse E Sump Crock located at the east end of Cargo Storage (6 Frac-tanks = 120,000 gallons) Disposal / Recycling

34 Deicing at Cargo Area

35 Collection System Components

36 2008/2009 Collection Collection Components Program One Vactor Glycol Recovery Vehicle (GRV) unit Two V-Quip Tow-Behind Mobile Collection Units (MCUs) Skyway/RJ Deicing Pad Northwest Deicing Pad 4 Sewer Balloons 3 Shut off Valves - 2 on the end of Concourse C and one at the end of Concourse E Sump Crock located at the east end of Cargo Storage (6 Frac-tanks = 120,000 gallons) Disposal / Recycling

37 Example Frac-Tank Location

38 Collection System Components

39 2008/2009 Collection Collection Components Program One Vactor Glycol Recovery Vehicle (GRV) unit Two V-Quip Tow-Behind Mobile Collection Units (MCUs) Skyway/RJ Deicing Pad Northwest Deicing Pad 4 Sewer Balloons 3 Shut off Valves - 2 on the end of Concourse C and one at the end of Concourse E Sump Crock located at the east end of Cargo Storage (6 Frac-tanks = 120,000 gallons) Disposal / Recycling

40 Collection Requirements Current permit requires: 85 percent capture from glycol management area Does not include fugitive glycol Fugitive defined as: 60 percent of Type I 85 percent of Type IV Provisions for modifications as other data becomes available.

41 Collection Requirements (cont.) Net effect: 34 % capture requirement for Type I fluid: 0.85 * (0.40) = 0.34 Credit for conservation practices: Conservation Factor Factor applied to glycol available for capture Annual reporting and meetings with permitting agency

42 Collection Goal Calculations C i = ADF A i ADF B I RC = (1 A/C L) = 0.6 (0.2 C) Collectable Type I = (1 A/C L) Type I Collectable Type IV = 0.15 Type IV 85% Collectable Glycol = 0.85[(0.6 (0.2 C)] Type I (0.15 Type IV) Goal = [[0.51 (0.17 C) ] Type I Type IV ] ( Type I + Type IV) 100

43 2008/2009 Efficiency Airline Usage April 1, ,162 gallons pure glycol Collection April 1, ,802 gallons of runoff 63,279 gallons pure glycol Annual Efficiency %

44 Program Annual Collection Efficiency 50% 45% Annual Collection Efficiency 40% 35% 30% 25% 20% 15% 10% 15% 18% 21% 32% 29% 31% 22% 33% 31% 33% 27% 5% 0%

45 Conservation Practices Blending for Temperature Close Spray Snow Removal Forced Air Technology Documentation

46 Preliminary Summary of Conservation Practices Airline Midwest Airlines AirTran Airways Air Wisconsin UPS Northwest Airlines AirTran Airways Practice Variable Glycol Mixtures Close/Hand Spraying Physical Snow Removal / Brooming Forced Air Technology Preliminary Total Glycol Saved 14,142 gallons 10,734 gallons 6,999 gallons 6,261 gallons 38,136 gallons C = 195,994 Type I Pure Gallons / (195, ,136) = 0.84 This reduced our Permit Requirement by 8% from 34% to 26%

47 2008/2009 Summary The Cooperation of Airline, Collection and Operations Personnel has allowed the Program to see Continued Collection Efficiency Improvements Annually Keys: Accurate Data Collection and Usage Reporting Documentation of Conservation Quick Response Time and Consistent Operation of Collection Equipment Continuous Improvement

48 Web-Based Data Management Program

49 What s Next? Deice pad study update Important to understand both options and obstacles No ideal solution Cargo ramp improvements Trial use of new pad location 2009/2010 Ongoing focus on conservation and collaboration

50 Aircraft Deicing Areas

51 440 th Air Force Ramp Pad Layout

52 Program Highlights Ever-changing operations and conditions Aircraft mix Airline mix Facility availability Amount of fluid used Flexibility in collection program allows for these changes Where sprayed How collected

53 Program Highlights (cont.) Strong collaboration between stakeholders is the other key. Knowledge sharing Iterative improved performance/common goal Trust

54 Questions or Comments? Our thanks to the following GMIA team members for materials presented in these slides: Greg Failey, Environmental Manager GMIA Kapur & Associates LF Green Development LLC CDM

Consolidated Aircraft Deicing April 19, Salt Lake City International Airport

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