The Evolution of DFW Airport s Deicing Program Balancing Risks with Results MAY 20, 2015

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1 Dallas/Fort Worth International Airport The Evolution of DFW Airport s Deicing Program Balancing Risks with Results MAY 20, 2015

2 DFW: Connecting The World The cities of Dallas and Fort Worth overcame politics and personalities to build DFW Airport, which opened in

3 DFW: Connecting The World DFW Airport is considered the economic engine of the Dallas-Fort Worth region. $31.6 Billion Economic Impact Annually (All Operations) $16.7 Billion Cargo Impact Annually (Cargo Operations) 143,000 Jobs Supported $9.4 Billion Supported Payroll UNT Center for Economic Development and Research, September

4 DFW: Connecting The World DFW has grown to support 55 nonstop international destinations and 149 nonstop services in the U.S., allowing travelers access to every major U.S. city within four hours. 4

5 DFW: Connecting The World In less than four decades of existence, DFW has grown into a global super hub, with a goal of delivering an unparalleled airport experience for our passengers. Our Mission: Is to provide our customers outstanding facilities and services, while expanding global access and economic benefits to those we serve! 5

6 SUSTAINABILITY A holistic approach to managing an airport so as to ensure the integrity of the Economic viability, Operational efficiency, Natural Resource conservation and Social responsibility of the airport, The EONS approach. ACI-NA, Aviation Sustainability Working Group

7 The Mission of DFW Environmental Affairs: Is to head the Airport s commitment to employ a philosophy that will continually adopt those principles promoting Industry Leadership, Environmental Excellence, and Economic Growth by employing innovative technologies and establishing ambitious but achievable environmental initiatives! 7

8 Part II Overview of DFW Airport s Topography and Deicing Collection System 8

9 Geographic Character Located within five cities 23 million square feet of building infrastructure 170 million square feet of airfield and public pavement 100 storm water outfalls 26 miles of open channels Eight distinct watersheds 9

10 DFW s Storm Water Collection System 258 miles of Storm Sewer Pipe 22 miles of Pretreatment Pipe 100 Storm Water Outfalls

11 DFW s Spent Aircraft Deicing Fluid Collection System 147 acres of deicing collection via 9 distinct deicing pads 17 miles of glycol pipe 20 million gallons of storage for spent glycol Reverse Osmosis Treatment Plant ~77% Capture Rate of deicing fluids

12 Reverse Osmosis (RO) Treatment System Largest installation of its type in the United States, and second largest internationally Remediate Spent Aircraft Deicing Fluid (SADF) from wastewater, making that waste stream compliant for direct discharge to the Trinity River Authority s Publicly Owned Treatment Works (POTW) Reduces SADF contamination in storm water runoff from 80,000 parts per million (ppm) glycol down to less than 250 ppm Capable of remediating 20,000,000 gallons per deicing season. FY14 Deicing Season, DFW collected over 13 million gallons of SADF and co-mingled runoff, and the RO Plant treated 4.2 million gallons of SADF 12

13 Water Quality Programs EAD ensures the airport operations comply with all State Water Quality permits and ensure DFW s receiving waters maintain high aquatic life use. Background: The Clean Water Act (CWA) enabled the development of regulatory programs to improve the quality of storm water discharges impacted by point sources originating from industrial activities, Municipal Separate Storm Sewer Systems (MS4 s), and construction activities. To accomplish this the EPA developed the National Pollutant Discharge Elimination System (NPDES) Program. In the state of Texas, the NPDES program is currently regulated under the authority of the Texas Commission on Environmental Quality (TCEQ). Individual Permit Regulates first flush runoff from 5 major outfalls Municipal Separate Storm Sewer System Permit (MS4) Regulates runoff from municipal operations Storm Water Management Plan (SWMP) required Multi-Sector General Permit (MSGP) Regulates runoff from industrial activities Storm Water Pollution Prevention Plan (SWP3) required Construction General Permit Regulations vary based on size and duration of construction project

14 Layout of Permitted Outfalls 059 Associated Receiving Waters Grapevine Creek Hackberry Creek Big Bear Creek Tributary 1 Big Bear Creek Trigg Lake

15 DFW S Compliance with Permit Limitations Permit Period through TPH OIL AND GREASE COPPER ZINC PH Number of Samples Collected Number of Exceedences Incurred 99.5% Success Ratio 15

16 2015 Renewed Individual Permit Final Modifications to Permit Standards Eliminated Outfalls 014 & 025 from Individual Permit Eliminated sampling requirements for 24-Hr Acute Toxicity bio-monitoring Reduced monitoring requirements for ph from 1/day to 1/month Reduced sampling requirements for Copper & Zinc (reduced from 1/week to 1/month) Added sampling requirements for Ammonia as result of ELG standards, but only applicable to the usage of urea for pavement deicing. Additional Proposed Changes per TCEQ in 2014 Add daily maximum limit of 200 mg/l for chemical oxygen demand (COD) based on Best Professional Judgement. DFW Airport contested the proposed change for multiple reasons and was able to win the final argument allowing COD to remain a report only sampling parameter. 16

17 Part III Balancing Sustainability with Winter Weather Priorities DFW Airport Deicing Program 17

18 Historical Winter Weather Events Type of Precipitation Number of Events 2 0 Light snow Freezing rain Ice pellets Heavy rain / Snow Heavy snow Overcast / freezing fog Rain / dropping temp Type of precipitation experienced at the maximum hourly precipitation rate 18

19 Historical Winter Weather Winter Weather Precipitation Rates Number of Events Maximum Hourly Precipitation Rate

20 Historical Perspective Glycol Usage and Volumes Discharged Deicing Season No. of Aircraft Type 1 Pure Product (gal) Type I Applied Product (gal) Type IV Applied & Pure (gal) Total Applied Product (gal) Volume Discharged to POTW ,128 97, ,946 31, ,072 1,588, ,694 27,695 1,165 28,860 18,118, ,067 57, ,124 7, ,874 12,288, , , ,203 56, ,472 7,568, , , ,816 67, ,991 21,171,214 AVERAGE 1,974 98, ,557 32, ,254 12,147,071 20

21 Glycol Collection System and Storage Capacity Deicing Pads Area Size Volume of Runoff per Storm Event (gal) Location Acres Ft " 0.5" 1.0" 1.5" Zulu ,802 16,022 30,758 61,516 96,119 EK North ,881 15,411 29,585 59,171 92,454 EK South ,211 10,319 19,810 39,621 61,907 SE Hold Pad , , , , ,403 NE Hold Pad ,874 58, , , ,637 HY ,049 47,387 90, , ,286 WK ,378 13,307 25,545 51,090 79,828 WL ,482 36,389 69, , ,305 Terminal D ,856, , ,473 1,110,946 1,735,853 SW Hold Pad ,276, , ,113 1,362,225 2,128,477 AVERAGE ,992 96, , , ,627 Based on 2014 TranSystems Airport Glycol Collection System Technical Study 21

22 Other Current and Future Obstacles Connected to Ensuring DFW Airport s Deicing Program Remains Sustainable and Effective Major Challenges are related to: Expanding existing deicing pads to support additional and/or larger aircraft; Upgrading existing infrastructure that may be nearing the end of life expectancy; Considering the need for additional storage and/or treatment capacity to accommodate more aggressive schedules; Collaborating with our Legacy Airlines to incorporate the use of more efficient deicing equipment; Evaluating alternative treatment systems that may be more compatible with the volume and concentration of the spent glycol often collected; Conducting additional research and consultation to gain further perspectives on innovative technologies and systems to assess and improve deicing programs. 22

23 Preparation for the A380 Aircraft at DFW Airport DFW expanded the Whiskey Lima Deicing Pad 98,000ft 2 to accommodate the A380 aircraft and support international travel. 23

24 Reconfiguring Deicing Pads for Additional Aircraft Added four deicing positions to the SE Hold Pad Reconfigured deicing positions at the SW Hold Pad to support the size of an A380. EXISTING REVISED 24

25 Updating Collection and Treatment Systems Attempting to increase GCS Detention Storage Capacity (estimated 20 million gallons) to mitigate the impacts of potential back to back significant storm events. Exploring the integration of other types of deicing treatment systems at DFW that may be more effective for the treatment of spent glycol that may not be concentrated enough to activate the RO system. 25

26 Continual Collaboration with Key Stakeholders Collaborating with key stakeholders to thoroughly evaluate how deicing programs may be enhanced to improve both environmental & operational aspects. Working with Deicing Operators to ensure staff are trained and familiar with Airport expectations and priorities. Utilizing all available resources including our airport partners and industry experts to ensure all viable alternatives are appropriately evaluated to ensure DFW s Deicing Program remains effective and sustainable. 26

27 Summary DFW Airport is pursuing a Balanced Approach to integrate Sustainability In all Business Activities and Operational Aspects through: Constant collaboration with key stakeholders to ensure DFW Airport can satisfy the needs of our primary customers and becoming an All Weather Airport; Remaining proactive and environmentally robust by exploring new & innovative technologies; and Partnering with other Airports, Manufacturers, and Technical Experts to ensure that DFW Airport can remain operationally viable and satisfy the needs of all of our business and community stakeholders!

28 Thank You DFW Airport Deicing Program ASCIATU WHITESIDE, CHMM, LEED GA SENIOR ENVIRONMENTAL OPERATIONS ANALYST 28