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<br />Acoustit1et <br /> <br /> <br /> <br /> <br />.~rch~t2.:turaj -5lCOi'_~(5tj(::j: ~~t1tSi~: H-~b~.'t3'df)IJ a,~d ~tjdj~)-iti,';juJI 31rtj <br /> <br />City of Sunny hies Beach <br />Attn. Rick Conner, Works & Eng. Dir. <br />18070 Collins Avenue <br />Sunny Isles Beach, FL 33160 <br />T: 305-792 1928, C: (786) 208 3498 <br />Email: rL'onnt.:mj'sihl1,J1d <br />Distribution: client's discretion <br /> <br />AcolUlstical MeaslUlrements Report <br />EF noi~e, Ocean. IV condlominilUlms <br /> <br />Our project ref: SIB-OIV <br /> <br />Miami, May i\ 2007 <br /> <br />Dear Rick, Ladies, Gentlemen, <br />Further to our measurement session of last night, please find enclosed our measurement results. <br /> <br />l. MEASUREMENTS DESCRIPTION & PROCEDURE <br /> <br />Ocean IV condominiums (orV) presents 13 [Fumes] Exhaust Fans (EF) on its Northern end that face the <br />lFlorida's Ocean Club (FOC) building at its North side. Note 4 EF's extra are present but not counted, as <br />they are on the East side of orv and oflittle impact upon the points of measurements described herein. <br /> <br />Sound measurements were performed with a class-I -laboratory standards- Bruel & Kjaer 2236-D inte- <br />grating sound level meter (ISLM) sinO 1810585, factory calibrated on or about 12/26/06 last. <br /> <br />Sound samplings were acquired at front of balconies of apartments 1002 and 504 (FOC building) facing <br />Ocean IV, each measurement consisting of approximately 10 to 30 seconds Leq sampling for broadband <br />(Lcq) and approximately thirty second Lrq (octave-band frequencies. From 31.5Hz to 8KHz) samplings, <br />later post-processed for frequency and statistical analysis informat,ion. The attached graphs were obtained. <br /> <br />The wind was essentially calm (from Weather Ch.; 0 - lOkts E - NE) and did not seem to affect much EF <br />noise measurements at recipients' side (balconies of apt. 504 & 1002). <br /> <br />n. MEASUREMENTS RESULTS <br /> <br />The present EFs (Exhaust Fumes fans) measurements are established for the records. The following com- <br />ments apply: <br /> <br />e Overall, there is little evidence noise is much in excess of permitted levels (we believe 60dBA day- <br />time), with readings of <br />e 62.8dBA with EJF's on at 504 and 60AdRA with ElF's off <br />and <br />III 64.3dBA with ElF's on at 1002 and 60.9dBA with ElF's off <br /> <br />CD In absence of wind, a minor difference exist between EF's turned on or off samplings at apartment <br />504 (2AdB) and apartment 1002 (3AdB). This is insufficient to solely blame noise solely on EFs. <br /> <br />;~ :Yi31 :.: 3 <br /> <br />A::~)~1r;'.j{L~'C '~.=., 75:;;.\:;\ ~~~ J~,~;2;:, \1!3;-'~. .3._::~:;; !2, ;\~::I,-;~i ;=L J312:: .~~_'. <br />-;-,~," JC5~ 9a'i 2':j~}~) '-=.:: (>.>,);. 37-J :3J:13 ~3:) {:}1)5) 92~~ 2i);J.:.~ =-.-'"';!:i acousticenoineers@hotmail.com <br />