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HSP-12 C910M Hearing Conservation a. "!`.'"° Rev. 0 5/24/2022 Job Safety Analysis (JSA)documents will identify those activities where excessive noise may be expected. On job sites where excess noise is anticipated, initial sound level meter readings will be recorded by the SHSO to determine whether hearing protection is required. When a sound level eight hour Time Weighted Average (TWA) is expected to exceed 80 dBA, decibel readings shall be recorded hourly. Noise monitoring records are kept with the project records. All CDIM employees and subcontractor personnel will wear hearing protection, with a Noise Reduction Rating (NRR) of at least 20, when noise levels may exceed 85 dBA. Employees and subcontractors may, at their discretion, don hearing protection at lower noise levels. 4.2 Hearing Conservation Program CDIM will develop a Hearing Conservation Program (HCP) in the event that employees are found to have an eight-hour TWA exposure exceeding 85 dBA. The HCP shall meet the requirements of the Hearing Conservation Amendment to OSHA's Occupational Noise Exposure Standard, 29 CFR 1920.95. This HCP shall cover exposure monitoring, audiometric testing, hearing protection, employee training and record keeping. Audiometric testing must be performed under medical supervision and consists of baseline and annual audiograms. Audiometric testing must be performed under the supervision of a physician, a professional audiologist or an otolaryngologist; a qualified technician conducts all tests. Tests must be conducted in a booth that meets ANSI S3.1 (R1971), Criteria for Background Noise in Audiometer Rooms. The test includes frequencies in the 500 to 6000 Hz range and is performed after 14 hours of no excessive noise exposure. The test measures the Standard Threshold Shift (STS)of 10 dBA in the 2,000, 3,000 and 4,000 Hz bands. Audiometric testing records are part of medical surveillance records. 5.0 TRAINING Training will be provided to employees on use of hearing protection and, if applicable, the Hearing Conservation Program. The initial 40-hour Hazardous Waste Operations and Emergency Response (HAZWOPER) and annual 8 hour refresher training required by the CDIM Corporate Safety Plan also. 6.0 RECORDKEEPING All records generated to comply with this HSP will be maintained in accordance with the CDIM record retention policy or applicable laws and regulations; whichever require a longer retention period. 7.0 REFERENCES CDIM Corporate Health and Safety Program 29 CFR 1910, Occupational Safety and Health Standards 29 CFR 1926, Safety and Health Regulations for Construction 29 CFR 1910.95, Occupational Noise Exposure 8 CFR 5097, Hearing Conservation Program Page 2 of 2