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Noise <br />Table 4. Federal criteria for construction equipment noise. <br />Noise Level in Decibels (dBA) at 50 feet <br />60 70 80 90 100 110 <br />Equipment Powered by Internal <br />Combustion Engines <br />j <br />Earthmoving equipment <br />j j <br />Compactor (roller) <br />t <br />Front loader ~ ~~ <br />Backhoe <br />Tractor <br />~ j i I <br />Scraper, grader ~~ <br />Paver ~ j <br />Truck ' ~~ <br />Materials handling equipment <br />e ° ~ t <br />i i ~ <br />Concrete mixer ;~~ ; <br />Concrete pump <br />j ; <br />i <br />Crane (movable) ~ '~ j <br />Crane (derrick) <br />Stationary equipment j i <br />i <br />Pump ~ <br />t <br />Generator ~~ ~ ~ ~ <br />Compressor ~ ~~ j ' <br />i <br />Impact Equipment i ~ ' <br />~ 3 ; <br />Pneumatic wrench <br />Jackhammer, rock drill <br />Impact pile driver (peak) <br />I <br />Other Equipment <br />j <br />Vibrator j <br />j j <br />Saw ~ ~~ I. s <br />Source: Criteria for noise regulations (U.S. EPA 1971). <br />Final EIS 94 New Federal Courthouse <br />