7c supp
Item 7c_Supp Ground Run-Up Enclosure (GRE) Feasibility/Siting Study February 28, 2012 1 GRE Facts A GRE is a term used for an enclosed, noise suppressed, aircraft engine testing facility Typically consists of 3 walls that deflect jet blast A GRE will typically reduce noise by 15-20 dB Size would accommodate at least a Boeing 737-900 Expected to accommodate up to 96% of all run-ups at Sea-Tac 2 Vancouver BC GRE Construction 3 Vancouver BC GRE Construction 4 Vancouver Opened January 2012 5 Airports with GRE's North America International Tampa, FL Cologne/Bonn, Germany Portland, OR Kuala Lumpur, Malaysia Chicago, IL Hannover , Germany Albany, NY Seoul, Korea Norfolk, VA Naples, Italy St Louis, MO Hong Kong Memphis, TN London Stansted Oakland, CA Basel, Switzerland Vancouver, BC (Opened January 2012) Toulouse, France Portsmouth, NH Sofia, Bulgaria Indianapolis, IN Dubai, UAE Milwaukee, WI Bogota, Columbia Pontiac, Michigan 6 Siting Analysis Option A Community Noise Benefits/Impacts Compatibility w/ Existing & Future Facilities Operational Impacts Cost Environmental 7 Siting Analysis Option B Community Noise Benefits/Impacts Compatibility w/ Existing & Future Facilities Operational Impacts Cost Environmental 8 Siting Analysis Option D Community Noise Benefits/Impacts Compatibility w/ Existing & Future Facilities Operational Impacts Cost Environmental 9 Siting Analysis Option E Community Noise Benefits/Impacts Compatibility w/ Existing & Future Facilities Operational Impacts Cost Environmental 10 Short-Listed GRE Sites A B2 B1 D9 D10 11 Site A Reduces single-event noise levels as compared to existing sites Largest benefits to the north, south, and east of the airport Slight reduction in single event noise to the west of the site 12 Site B Reduces single-event noise levels for most areas compared to existing sites Largest benefits to the north, south, and east of the airport Slight reduction in single event noise to the west of the site Slight increase in single event noise to the northwest of the site 13 Site D Reduces single-event noise levels for most areas compared to existing sites Largest benefits to the north, south, and east of the airport Slight reduction in single event noise to the northwest and west of the site Slight increase in single event noise to the southwest of the site 14 GRE Analysis A GRE would concentrate most run ups in one location Currently, there is an approximate 60/40 split between run ups at the south and north primary run up pads A GRE is expected to accommodate up to 96 percent of all run-ups at Sea-Tac Airport Concentrating most run ups in one location could potentially increase cumulative noise levels in the direction of the open end of the GRE Larger aircraft would continue to perform run ups at the primary run up pads 15 Questions? 16
Limitations of Translatable Documents
PDF files are created with text and images are placed at an exact position on a page of a fixed size.
Web pages are fluid in nature, and the exact positioning of PDF text creates presentation problems.
PDFs that are full page graphics, or scanned pages are generally unable to be made accessible, In these cases, viewing whatever plain text could be extracted is the only alternative.