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,~ <br />71 <br />~i <br />0:20 10:18 <br />A.I•.. A.I`i. <br />Without quarry operatiro, 18 ?ebruary 1975 <br />--59 <br />{^54 <br />45 <br />-r. <br />-~- <br />10:16 <br />A,T•i. <br />Noise level <br />in <br />decibels <br />~~---- _ __ -~ _ 7i <br />~.__., __ 4lind _~. _,-~:.. ~~,, - ~ _~ 1 Wind ~ - \~ - ~ -~,- ~ 6 <br />- _ _ ~~ackgrbiind _1`evel ~`' -r _ ~ - 50 <br />--I-~ - -- --- <br />-;--~---i- - - - -- - T ~- <br />~ -~ --~ -r- --~-- - <br />1 <br />1:31 P. M.. 1:28 P.M, <br />During quarry operations, 20 February 1975 <br />' r2ESEl'dTATIVE IIOISE LEVEL ^ORDS <br />SZ'PE A: EAST SIDE OF COGLEY~OPERTY <br />