Project Background

? WPDES Mandated Permit 

requirements

?Glycol collection 42.5%

?Water Quality Monitoring

?Annual Reporting

? Goal Adjustment for Conservation 

Practices (2001)
2005/2006 Collection Program

? Collection Components 

? One GRV unit

? One V-Quip Tow-Behind Mobile Collection Unit (MCU)

? Central Deicing Pad

? Northwest Deicing Pad (January 2005)

? 7 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

? Grit Dump located at Hydrant Fuel Farm

? Storage (5 Frac-tanks = 105,000 gallons)

? Anaerobic Treatment
Collection System Components
Deicing At GMIA
Deicing At GMIA
Central De-Icing Pad (CDP)
Deicing At GMIA
Glycol Recovery Vehicle (GRV) 
Glycol Collection/Recovery 

Activities Using GRV
V-Quip Tow-Behind Mobile Collection 

Unit (MCU)
Glycol Collection/Recovery 

Activities Using MCU
Sewer Balloon Locations
Sewer Balloon Pumping
Frac-Tank Locations
Glycol Entrained in Snow
Snow Removal
Weather

? Winter 2004-2005

? Relatively normal to 

slightly above average 

temperatures every 

month except March with 

slightly below average 

temperatures

? 21 event days (more than 

0.5” snow)

? 48.2 total inches of snow 

was 3.7 inches less than 

normal for season

? Winter 2005-2006

? Above average 

temperatures every month 

except December with 

slightly below average 

temperatures

? 18 event days (more than 

0.5” snow)

? 37.9 total inches of snow 

was 14.0 inches less 

than normal for season
Usage Summary Comparison

? 2005/2006 Season

? 142 days with reported 

usage 

? 55 days with usage > 

500 gallons glycol

? 24 days with usage > 

2,000 gallons glycol

? 11 days with usage > 

5,000 gallons glycol

? Total Usage For Season 

= 163,825 pure gallons

? 2004/2005 Season

? 140 days with reported 

usage 

? 82 days with usage < 

500 gallons glycol 

? 24 days with usage > 

2,000 gallons glycol 

? 10 days with usage > 

5,000 gallons glycol

? Total Usage For 

Season = 185,404 

gallons 
Aircraft Deicer Usage

16,536

51,566

554

145,947

26,208 26,254

24,829

1,889

9

17,878

2,821 4,063

1,907

7,189

0

20,000

40,000

60,000

80,000

100,000

120,000

140,000

160,000

180,000

200,000

Nov Dec Jan Feb Mar Apr Season

Totals

Glycol (Gallons)

Type I Type II/IV
Collection Program Preliminary 

Results

Note: All entries in gallons of 100% glycol

Totals: 31,650 10,433 9,395 2,952 54,430

April 87 0 0 0 87

March 8,562 2,439 1,366 32 12,399

February 6,911 2,523 1,276 7,66 11,476

January 5,787 1,885 1,216 1,08 8,997

December 8,604 2,273 4,086 5,32 15,495

November 1,699 1,313 1,451 1,514 5,977

Balloons 

and Slush

Glycol 

Collected

Month GRV Ramp Master De-Icing Pad Inserts/ 
Preliminary Efficiency

? Airline Usage – April 1, 2006

? 163,825 gallons pure glycol

? Collection – April 1, 2006

? >332,000 gallons of runoff (16%)

anaerobically treated @ $0.08/gallon 

? 54,430 gallons pure glycol

? Annual Efficiency -

? 33.3%
2005/2006 Collection Efficiency

38% 41% 39%

15%

30%

26%

33%

0.0%

5.0%

10.0%

15.0%

20.0%

25.0%

30.0%

35.0%

40.0%

45.0%

Nov-05 Dec-05 Jan-06 Feb-06 Mar-06 Apr-06 Season

Monthly Collection Efficiency
Program Annual Collection 

Efficiency

15%

21%

29%

22.5%

31%

18%

32%

33%

0%

5%

10%

15%

20%

25%

30%

35%

40%

45%

50%

1998-1999 1999-2000 2000-2001 2001-2002 2002-2003 2003-2004 2004-2005 2005-2006

Annual Collection Efficiency
Preliminary Summary of 2005-

2006 Conservation Practices 

C = (145,948)/(145,948 + 6,365) = 0.958

This reduced our Permit Requirement by 4.2%

Preliminary Total 6,365 gallons

Close spraying 630 gallons

Physical snow removal 3,990 gallons

Variable glycol mixtures 795 gallons

Hybrid forced air deicing truck 950 gallons

Practice Glycol Saved
WPDES Permit Requirement for 

Glycol Collection

2005-2006 Season

Goal = [0.595 – (0.17/C)] [Type I ADF] 

+ 0.1275 [Type IV ADF]

C = 0.958

Type I = 145,948 gallons

Type II/IV = 17,877 gallons

Preliminary Goal = 62,745 gallons (38.3%)
Summary

? Winter was milder than normal 

? 163,825 gallons pure glycol were 

used 

? Collection efficiency was 33.3%

? Conservation Adjusted Goal 

38.3%
Thank You!

August 8, 2006