case study: runway 10-28 safety area improvements off-site...
TRANSCRIPT
Case Study: Runway 10-28 Safety Area Improvements
Off-Site Mitigation of PCBMPs June 20, 2013Ricky D. Smith, Director of Airports
Presentation AgendaKim McGreal:
CLE Airport Overview Storm Water Regulations
Beau Williams: Compliance Challenges Project Scope of Work Maintenance & Take
Away Points
Eva Vargas: Design Criteria Design Construction
CLE Airport Overview - History CLE is owned and operated by the
City of Cleveland and funded through airport revenue and grants
1st municipal airport in the country when opened in 1925
1st radio-equipped air traffic control tower and airfield lighting system
1st with Passenger Innovations Terminal Flight Information Displays (1950s)
1st rail connection to Downtown (1960s)
1st paved runway (now 6R-24L) for testing and delivery of B-29 bombers built at Tank Plant
National Air Races 1929-1949
Major expansion with new 6L-24R runway and extension of 6R-24L runway (2000)
One of 1st airports nationally to design, build, and operate a centralized deicing pad (2005)
Cleveland Press, “B-29 Bomber at Cleveland Airport, 1945,” Teaching & Learning Cleveland , accessed June 19, 2013, http://csudigitalhumanities.org/exhibits/items/show/2840.
Cleveland Airport Overview - Facts Serves about 10 million passengers per year
166,656 operations (takeoffs and landings) in 2012
250 daily nonstop flights to 74 destinations
Two parallel runways at 10,000 and 9,000 feet, and one crosswind runway at 6,000 feet
Over 7,000 public parking spaces on the premises
Cleveland Airport Overview –Storm Water Regulations
Consent Order: 1992 – 2001
Modified Consent Order: 2001 – 2011
Industrial NPDES permits: 2001, 2006, 2011
Construction General NPDES permits: 2003, 2008, 2013
Cleveland Airport Overview –Industrial Storm Water Results Through regulations and airport storm water initiatives water
quality is improving significantly
Ammonia source areas remediated with normal outfall concentrations less than 1.0 mg/l
Reduced PG concentrations in outfalls 400%-1,000% with some outfalls showing no detections much of the deicing months
Cleveland Airport Overview -Construction Storm Water
Two detention basins: 43 acre and 4 acre
One underground detention system and sand filter
One retention basin: 1 acre
One planned detention basin: 1.21 acre
Two bioretention cells
Compliance Challenges
• Administration• Operations• Maintenance
The City of Fairview Park
Compliance Challenges When selecting the location for PCBMPs many things are considered
but safety is paramount.
Wildlife attractants can result in wildlife strikes.
http://wildlife.faa.gov/database.aspx
Compliance Challenges
Compliance Challenges Infield integrity
1999 2011 Airfields are dynamic – pavement layouts change based
on FAA safety initiatives, changes in aircrafts and service areas, tenant needs, updating infrastructure, etc.
Compliance Challenges
Compliance Challenges –On-Site BMP Options (OHC000003)
Compliance Challenges –Off-Site Mitigation OptionOff-Site Mitigation Benefits
o Reduced wildlife hazardso Space availabilityo Partner to share in costs and/or O&Mo Benefits to watershed and TMDL goals
Off-Site Mitigation Challengeso Site selection within watershedo Larger treatment capacity requiredo Buy-in from stakeholders (regulators, etc.)o Agreement with partner/host facility
CLE
CLE Located in Rocky RiverSub-Watershed04110001070040
CLE Located in Rocky RiverSub-Watershed04110001070040
Overall Rocky River Watershed
Which Post-Construction BMP for use at CLE?
Runway 10-28 Safety Area Improvements Improve non-standard runway
safety areas
o Shift runway 330 feet to the easto Maintain overall runway length of
6,017 feeto Preserve Instrument Landing
System (ILS) minimao Raise threshold elevations o Install Engineered Material
Arresting Systems (EMAS) on both ends
o Reconfigure adjoining taxiways, perimeter roads, navigational aids
Scope of Work
Gradingo 131 acres disturbedo 300,000 cy earthwork
Pavingo 71.8 acres paved o 54.8% impervious
area after construction
Drainageo 2.7 miles of storm
sewers 24” to 90” diameter
Project Elements
General Statewide NPDES Permit OHC000003 Storm Water Associated With Construction
Activities
SWP3 Requirements
◦ Non-Structural Preservation Methods
◦ Erosion Control Practices
◦ Runoff Control Practices
◦ Sediment Control Practices
◦ Post-Construction Storm Water Management
Drainage Areas
Off-Site Mitigation Request for off-site mitigation:
o Cleveland DPC will ensure operation and treatment in perpetuity of the off-site BMP
o Off-site location discharges to the same 14-digit Hydrologic Unit Code (HUC-14)
o Mitigation ratio of the WQv is 1.5:1, or the WQv at the point of retrofit, whichever is greater
Existing Northern Detention Basin (NDB) to be retrofit as Dry Extended Detention Basino Water Quality Volume = 225,000 cf
Conventional Dry Extended Detention Basin
Northern Detention Basin (NDB)
Northern Detention Basin (NDB)
Before retrofit After retrofit
Northern Detention Basin (NDB)
Northern Detention Basin (NDB)
Take Away Points & Lessons Learned Perform complete PCBMP assessments and due diligence. Bring Ohio EPA and other regulators in early. Ohio EPA and Soil Water Conservation Districts are excellent
resources to utilize. Dry detention ≠ DRY detention when built on clay. Retrofits can be akin to constructed wetlands. Educate regulators, management and city councils,
contractors, and public on your situation. Airports are unique – “if you’ve seen an airport, you’ve seen
ONE airport.” Develop short, mid, and long term strategies and plan ahead. Procure and work closely with experienced consultants and
contractors.
Contact InformationKim McGrealDPC Environmental [email protected]
Beau WilliamsDPC Environmental Project [email protected]
Eva D. Vargas, PE, AICPSenior Project ManagerRW [email protected]
www.clevelandairport.com
www.burkeairport.com
www.city.cleveland.oh.us