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4.4 NOISE <br /> TABLE 4.4-2 <br /> TYPICAL RANGES OF AVERAGE NOISE LEVELS (LEQ) <br /> IN DBA DURING CONSTRUCTION <br /> Construction 50 Feet From 1000 Feet From 3000 Feet From <br /> Phase Source Source Source <br /> Ground Clearing 83-84 57-58 47-48 <br /> Excavation 71-89 45-63 35-53 <br /> Foundations 77 51 41 <br /> Erection 72-84 46-58 36-46 <br /> Finishing 74-89 48-63 38-53 <br /> Source: U.S. EPA, 1973 <br /> 4.4-9 <br />