The most important result of this project is the formulation of the “Standard Operational Procedures for the Approval Examination of New Schools, Libraries, and Medical Institutions in Grade 2 and Grade 3 Aviation Noise Control Zones”. Other achievements of this project include:（1）the “Measurement Conditions and Measurement Points of Indoor DNL of Aviation Noise”, （2）the “Examination Norms for Indoor DNL of Aviation Noise of New Schools, Libraries, and Medical Institutions in Grade 2 and Grade 3 Aviation Noise Control Zones”,（3）the “Policy Evaluation and Approval Process for the Application of Building New Schools, Libraries, and Medical Institutions in Grade 2 and Grade 3 Aviation Noise Control Zones”,（4）the “Approval Process for the Application of Indoor DNL of Aviation Noise for New Schools, Libraries, and Medical Institutions in Grade 2 and Grade 3 Aviation Noise Control Zones”, and （5）the “Charge Description of the Approval System”. These will combine to serve as a reference for local competent authorities in their implementation of the “Approval System for New Schools, Libraries, and Medical Institutions in Grade 2 and Grade 3 Aviation Noise Control Zones”.

Day-Night Level (DNL)，Aviation Noise，Noise Control