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From page 43... ... 43 This chapter describes the conduct of noise measurements and interviews during July and September of 2015 in the cities of Long Beach, CA, and Las Vegas, NV, and during June of 2016 in Georgetown and North Arlington, VA, in the Washington, D.C., area. 4.1 Interviewing Areas, Helicopter Routes, and Noise Measurement Sites Figures 4-1 through 4-3 show nominal helicopter flight routes and noise measurement sites for the three interviewing areas. Read the entire page →
From page 44... ... 44 Assessing Community Annoyance of Helicopter Noise Figure 4-1a. Location of noise measurement sites at the Long Beach study area. Read the entire page →
From page 45... ... Noise Exposure Estimation and Interviewing Methods 45 Figure 4-2. Helicopter route (white arrow) Read the entire page →
From page 46... ... 46 Assessing Community Annoyance of Helicopter Noise and no distinctive features. Ground elevations on the west side of the study area are essentially the same as the airport elevation, but the terrain drops considerably on the east side of the study area. Read the entire page →
From page 47... ... Noise Exposure Estimation and Interviewing Methods 47 interviewing area included a mix of retail uses, a university with a hospital heliport, and party wall (row) and single-family houses. Read the entire page →
From page 48... ... 48 Assessing Community Annoyance of Helicopter Noise Figure 4-4. Radar flight tracks for 1 week prior to and during Long Beach survey. Read the entire page →
From page 49... ... Noise Exposure Estimation and Interviewing Methods 49 Figure 4-5. Radar flight tracks for 1 week prior to and during Las Vegas survey. Read the entire page →
From page 50... ... 50 Assessing Community Annoyance of Helicopter Noise Figure 4-6. Helicopter radar tracks during DCA survey. Read the entire page →
From page 51... ... Noise Exposure Estimation and Interviewing Methods 51 Figure 4-7. Radar tracks for fixed-wing aircraft, typical day during DCA survey (arrivals in red) Read the entire page →
From page 52... ... 52 Assessing Community Annoyance of Helicopter Noise Figure 4-8. Noise model flight tracks for 1 week prior to and during Long Beach survey. Read the entire page →
From page 53... ... Noise Exposure Estimation and Interviewing Methods 53 Figure 4-9. Noise model flight tracks for 1 week prior to and during Las Vegas survey. Read the entire page →
From page 54... ... 54 Assessing Community Annoyance of Helicopter Noise Flight tracks DEP- Blue APP- Red Legend 1 mi N Figure 4-10. Helicopter noise model tracks for DCA survey modeling. Read the entire page →
From page 55... ... Noise Exposure Estimation and Interviewing Methods 55 Figure 4-11. Preliminary helicopter-only noise exposure bands in vicinity of helicopter flight tracks at LGB. Read the entire page →
From page 56... ... Figure 4-12. Preliminary helicopter-only noise exposure bands in vicinity of helicopter flight tracks at LAS. Read the entire page →
From page 57... ... Noise Exposure Estimation and Interviewing Methods 57 coordinates were later used by noise modeling software to refine the preliminary estimates of helicopter noise exposure for each respondent. The landline and cell phone databases were compiled from public records and proprietary databases.16 The first of the two databases contained telephone-subscribing households in a nationwide, U.S. Read the entire page →

From page 43...

... 43 This chapter describes the conduct of noise measurements and interviews during July and September of 2015 in the cities of Long Beach, CA, and Las Vegas, NV, and during June of 2016 in Georgetown and North Arlington, VA, in the Washington, D.C., area. 4.1 Interviewing Areas, Helicopter Routes, and Noise Measurement Sites Figures 4-1 through 4-3 show nominal helicopter flight routes and noise measurement sites for the three interviewing areas.