Measurements, if required under this subsection, shall be made by a competent acoustical engineer using equipment meeting the United States of America Standards Institute Standard S1.4-1961 or the latest revision thereof and S2.22 or the latest revision. All measurements shall be made in at least eight frequency bands. The required measurements shall note ambient noise levels between hours of 8:00 a.m. and 11:00 p.m. for periods of at least one hour on three separate occasions.