Agenda Packets - 1985/05/06 - Laserfiche WebLink

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AIAYOR ANI) CODNCII, APRfL 3, 1985 PAGR 'rW0 The second changr_, and Probably the more important of the two as it would relate to the city of Mounds View, is to tiOn m the means by which noise is measured and a determina- tion made as to whether or not a specific use is in violation of State Noise Standards, The current Standards and the proposed new Standards were explained to St b Dave Kelso of the Minnesota Polwere Control to me responsible for enforcement of y explanation of the thr. Noise Standards,y who is L10 is that a noisecsource cannot exceed which is describedasestablished by the State a cannodsexceed the decibel out of an level y hour, No more than one hour of than six minutes required and the MPCA assumes t of measurement is maximum operations, hat monitoring is done during considerin It can he assumed from this that, g the current nperations at the Anoka County - have a Airport, several nuisance -type noise incidents would have to occur during a one hour period when noise is measured in order for a determination to be made as to whether or not a violation of the noise standards have occurred, The proposed new Standard would measure noise on what is referred to as the L Period and the amountq Noise is measured over a one hour whether or of energy is averaged to determine not a ✓iolation of the Standards has occurred, give Mr, Kelso explained that such a measuring standard would level gasacornpared)toto larger incidences at a hi her decibel significantlythe L10 me in ethod thus, one incident of the State Standard could push the average measurement over the one hour period over the Standards. It would appear from this information that this measurement State me the measurement would be more useful for us in Mounds View duo_ extremely bus relatively infrequent incidences except during y periods of airport operations, The MPCA has also, agreed to measure noise for airports using the Ldn measurement, however, this will not supercede the Leq standard, 1'he I twenty -Four hour per�odmand uusinnt measures noise over a formula determines whether or not a complicated logarithmic hour period exceeds State noise over the twent Standards, y-four Due to the fact that this is an extremely complex and complicated issue I would be more than happy to answer an questions you might have, however, it would be m recommendation that. the y these ro proposed City not submit an y the fact that itrnisdSCaff'snts oopini m Noisethat thandardstdue nto standards would be beneficial to our cause, Proposed DPP/mjs/Mncl: