Laserfiche WebLink
<br /> <br />Veneklasen Associates <br /> <br />New Lake Elmo Elementary School Noise Study; Lake Elmo, Minnesota <br />Property Noise Measurement Summary; Veneklasen Project No. 8512-002 <br />October 28, 2024; Page 6 of 9 <br /> <br />Month Day, Year; Page 6 of 9 <br /> <br /> <br />www.veneklasen.com <br /> <br />To model the case where patrons of all shooting bays are using a high caliber rifle, Veneklasen modelled noise to the <br />proposed school property in the instance where a 45-caliber firearm is being used at each of the five shooting bays <br />simultaneously. This is representative of a shooting competition event being held at the club. Numeric results below <br />are shown in one hour dBA values with a maximum value of 62 dBA, which is below the allowable 63 dBA criterion. <br />Note, this model is conservative for a similar reason the above model is because shooters in all five bays will not be <br />firing simultaneously and will not all fire the same number of rounds so what is presented is the most conservative <br />representation of use. It is also worth noting that the gun club has a 50 -caliber firearm limit. <br />Figure 3. Five Simultaneous High-Caliber Firearm Modelled Noise Levels <br /> <br /> <br />Summary <br />Veneklasen conducted acoustic measurements of firearm noise from the Oakdale Gun Club as measured on the <br />proposed project school site to determine whether noise levels exceeded allowable MPCA criteria and would trigger <br />the proposed project to implement noise control measures. The allowable noise threshold was 63dBA as measured <br />within one (1) hour at any location on the school property where activity would take place. <br /> <br />Acoustic measurements at four (4) key locations were taken in July of 2023. The results of these measurements <br />showed that existing noise levels are compliant with MPCA criteria. However, it was communicated to Veneklasen that <br />occupancy, and likely noise, was greater during the months of October and November. Therefore, Veneklasen <br />completed additional calculations to model different higher-noise operating conditions of the gun club and verify <br />these would also be code compliant. <br /> <br />L1: 59dBA <br />L2: 59dBA <br />L3: 58dBA <br />L4: 62dBA