South Bellevue Operational Noise Mitigation Types of barriersTypes of barriers Heights and locations Heights and locations City of Bellevue Light Rail.

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Presentation transcript:

South Bellevue Operational Noise Mitigation Types of barriersTypes of barriers Heights and locations Heights and locations City of Bellevue Light Rail CAC 1

Acoustic panels on elevated guide ways 6-8ft high Sound attenuating composition Stainless steel or aluminum Sound walls 8-14 feet above top or rail Reinforced concrete Reduced PA volume during nighttime hours Operational Mitigations Measures 2

Barrier detail Barrier Details 3

Insert table 2.1 Maximum permissible noise limits 5

James has a list? Track lubricators? Measured existing vehicles? Lessons learned 6

Noise analysis- operations 6 ft. panel on west side of guide way 4 ft. panel on east side of guide way

8 ft. wall on east side of Bellevue Way 4 ft. wall on east side of Bellevue Way, train in trench 12 ft. below grade 6 ft. wall on east side of Bellevue Way & 112 th Ave SE 10 ft. wall on east side of 112 th Ave SE 6 ft. wall on east side 112 th Ave SE

10 ft. wall on west side of 112 th Ave SE 12 ft. wall on west side of 112 th Ave SE 14 ft. wall on west side of 112 th Ave SE 12 ft. wall on west side of 112 th Ave SE 10 ft. wall on west side of 112 th Ave SE (replaced with 18 ft tall retaining wall). 8 ft. wall on west side of 112 th Ave SE

Questions? City of Bellevue Light Rail CAC 10

East Side Initial Charge Overlake TC International District Rainier Mercer Island Overlake Village 130th124th South Bellevue East Main Bellevue TC Hospital OMSF / Storage Tracks Times are Approximate, based on current modeling 1 st train operates at sweep speed (25MPH) Direction of movement 1st Trains Out (approx.) TrainFromDepart TimeOTCHospitalBTCE MainS BellMIRain 1OMSF/Storage Tracks4:29:00 AM 4:31:00 AM4:34:00 AM4:38:00 AM4:42:00 AM4:48:00 AM5:07:00 AM 2OMSF/Storage Tracks4:42:00 AM 4:44:00 AM4:46:00 AM4:49:00 AM4:52:00 AM4:57:00 AM 3OMSF/Storage Tracks4:47:00 AM 4:49:00 AM4:51:00 AM 4OMSF/Storage Tracks4:40:00 AM4:50:00 AM5:04:00 AM5:06:00 AM5:09:00 AM5:12:00 AM5:17:00 AM5:22:00 AM

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