GAO-10-748SP: Aviation and the Environment: Survey of Airport Officials on Airport Environmental Issues, an E-supplement to GAO-10-50
U.S. Government Accountability Office
| Q6. During this period, which of the following supplemental noise metrics did your airport use? |
| (Total Population) |
| Percent | Number of respondents |
|
|---|---|---|
| a. Community Noise Equivalent Level (CNEL) | 29.6 | 54 |
| b. Single Event Noise Level (SENL) | 38.9 | 54 |
| c. Sound Exposure Level (SEL) | 55.6 | 54 |
| d. Equivalent Sound Level (Leq) | 44.4 | 54 |
| e. Maximum Sound Level (Lmax) | 72.2 | 54 |
| f. Time Above dBA Threshold (TA) | 22.2 | 54 |
| g. Number Above dBA Threshold (NA) | 14.8 | 54 |
| h. Other supplemental noise metric | 5.6 | 54 |
| i. No answer | 0.0 | 54 |
| Q6. During this period, which of the following supplemental noise metrics did your airport use? |
| (Large and Medium Hubs) |
| Percent | Number of respondents |
|
|---|---|---|
| a. Community Noise Equivalent Level (CNEL) | 31.3 | 32 |
| b. Single Event Noise Level (SENL) | 31.3 | 32 |
| c. Sound Exposure Level (SEL) | 65.6 | 32 |
| d. Equivalent Sound Level (Leq) | 59.4 | 32 |
| e. Maximum Sound Level (Lmax) | 84.4 | 32 |
| f. Time Above dBA Threshold (TA) | 25.0 | 32 |
| g. Number Above dBA Threshold (NA) | 12.5 | 32 |
| h. Other supplemental noise metric | 0.0 | 32 |
| i. No answer | 0.0 | 32 |