HB1340 Summary

• Amends the Permanent Noise Monitoring Act to replace "Ldn" (day-night average sound level) with "annual CNEL" (annual community noise equivalent level) as the measurement standard for airport noise monitoring.

• Adds new definitions for "annual CNEL," "daily CNEL," "noise exposure level," and "noise level" with specific calculation methods and technical specifications incorporated by reference to American National Standards.

• Requires permanent noise monitoring reports to include noise contour maps showing 65, 70, and 75 annual CNEL zones around airports instead of the previous Ldn zones.

• Modifies reporting requirements to include separate noise contour maps for daytime (7:00 a.m. through 6:59 p.m.), evening (7:00 p.m. through 9:59 p.m.), and nighttime (10:00 p.m. through 6:59 a.m.) periods at 65, 70, and 75 decibel thresholds.

• Maintains existing reporting obligations for airport sponsors to submit semi-annual reports (June 30th and December 31st) to state and federal officials with maps indicating residential areas, schools, hospitals, and other sensitive locations within noise contours.