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P.E~.iE~iiTATIV% IdCI3 LEVEL ~~~DS <br />SITE B: COt~[:FR OF FOtZ1;ST <br /> <br />- 59 <br />- 54 <br />- 45 <br />Noise level <br />in <br />decibels <br />1.53 P. t•7. <br />IJuring qusrr;,+ operations,. 20 February 1975 <br />-~- - -- - <br />a 4 '. <br />71 <br />-_- \ _} A <br />\tl - 65 <br />`rub k <br />7--+---~_- 63 <br />~ 1~- - 61 <br />_: -,~- ~ <br />~- ~~ ~6 <br />l ~- -- 5 <br />Lam. rr ~~ ` 3 <br />4 <br />I:50 P.M. <br />10:29 10:27 <br />A.PI. A.M. <br />1•Jithout quarry operating, 18 February 1975 <br />