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4. ENVIRONMENTAL ANALYSIS w 4.5 NOISE ` U.S. DEPARTMENT OF LABOR, MINE SAFETY AND HEALTH ADMINISTRATION (MSHA) The mission of the Mine Safety and Health Administration(MSHA) is to administer the provisions of the Federal Mine Safety and Health Act of 1977 (Mine Act)and to enforce compliance with mandatory safety and health standards as a means to eliminate fatal accidents;to reduce the frequency and severity of nonfatal accidents; to minimize health hazards; and to promote improved safety and health conditions in the Nation's mines.MSHA carries out the mandates of the Mine Act at all mining and mineral processing operations in the United States, ti regardless of size,number of employees, commodity mined,or method of extraction. MSHA's new noise standards (1999)require mine operators to monitor workplace noise exposure .. and provide for miners and their representatives to observe the monitoring. The standards establish several levels requiring mine operators to take action: r. • Miners exposed to an average sound level of 85 decibels(85 dBA)or more over an 8—hour period must be enrolled in a hearing protection program, which will include special training,hearing tests,and hearing protection. ` • If workplace noise levels reach 90 dBA or more over an 8—hour period, mine operators must use feasible engineering and administrative controls to reduce noise levels. Hearing protectors are required to he provided and worn if the permissible exposure level cannot be achieved using feasible engineering and administrative controls. • At workplace noise levels of 105 dBA or more over an 8—hour period,mine operators must ensure the use of both ear plug and earmuff type hearing protectors. • At no time during the work shift may noise levels exceed 115 dBA. SAN JOAQUIN COUNTY DEVELOPMENT TITLE y, Chapter 9, Section 1025.9 of the San Joaquin County Development Title includes maximum allowable noise exposure levels for transportation and stationary sources,as shown in Table 4.5-1, Parts I and H. s The San Joaquin County Development Title also includes the following provisions,which are applicable to this project: (a) (2) Private development projects that include the development of new transportation facilities or the expansion of existing transportation facilities shall be required to mitigate the noise levels from these transportation facilities so that the resulting noise 6. levels on noise sensitive land uses within and adjacent to said development projects do not exceed the standards specified in Table 4.5-1,Part I. .. (b) (2) Proposed projects that will create new stationary noise sources or expand existing stationary noise sources shall be required to mitigate the noise levels from these stationary noise sources so as not to exceed the noise level standards specified in Table 4.5-1,Part II. r RMC Pack Vemalis Quarry Mining and Reclamation Pmject 4.5-7 ESA/203015 Administm ive Draft©R Match 2004