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receptors; 3) conformance to state noise standards; and 4) quality of life. Identify <br />measures that will be taken to minimize or mitigate the effects of noise. <br />AUAR Guidance: Construction noise need not be addressed in an AUAR, unless there is some <br />unusual reason to do so. The RGU might want to discuss as part of the mitigation plan, however, <br />any construction noise ordinances in effect. <br />If the area will include or adjoin major noise sources, a noise analysis is needed to determine if <br />any noise levels in excess of standards would occur, and if so, to identify appropriate mitigation <br />measures. With respect to traffic -generated noise, the noise analysis should be based on the <br />traffic analysis of Item 20. <br />Existing Noise <br />The AUAR study area is currently mostly an undeveloped area with 61 acres of existing low to <br />medium residential homes in the southwest quadrant. The existing noise sources within the <br />study area consist mainly of noise from the surrounding roadways and land uses. The nearest <br />receptors to future development are the residential homes in the southwest corner and northern <br />portion of the study area. These nearest noise receptors will experience noise levels during <br />construction that are elevated in comparison to existing noise levels. Grading and excavation <br />activities on site will require heavy construction equipment. <br />Traffic Generated Noise <br />A sound increase of 3 A -weighted decibels (dBA) is barely noticeable by the human ear, a 5 dBA <br />increase is clearly noticeable, and a 10 dBA increase is heard as twice as loud. For example, if <br />the sound energy is doubled (i.e., the amount of traffic doubles), there is a 3 dBA increase in <br />noise, which is just barely noticeable to most people. On the other hand, if traffic increases by a <br />factor of 10, the resulting sound level will increase by about 10 dBA and be heard as twice as <br />loud. <br />Scenario 1 and 2 <br />Traffic volumes in the study area are either on roadways that do not have receivers that are <br />sensitive to noise, or the traffic levels attributable to the future development are well below the <br />amount that would generate a sound increase that could be noticeable. The change in traffic <br />noise levels is not anticipated to be readily perceptible. <br />Construction Noise <br />As stated in the AUAR guidelines, construction noise need not be addressed unless there is <br />some unusual reason to do so. No unusual circumstances have been identified that would <br />necessitate a detailed construction noise analysis. <br />Scenario 1 and 2 <br />The Lino Lakes Code of Ordinances regulates both the hours of operation for construction <br />equipment and allowable noise levels. Normal construction hours are 7:00 a.m. to 7:00 p.m., <br />Monday through Friday. Construction of the proposed project would comply with these <br />requirements. <br />Operational Noise <br />Scenario 1 and 2 <br />The Lino Lakes Code of Ordinances and the MPCA regulate mechanical noise associated with <br />building operation. Construction equipment would be fitted with mufflers that would be properly <br />maintained during the construction process. All future development will be required to comply <br />with these requirements. <br />20. Transportation <br />a. Describe traffic -related aspects of project construction and operation. Include 1) <br />existing and proposed additional parking spaces; 2) estimated total average daily <br />Lino Lakes Main Street - AUAR 72 July 2025 <br />Page 80 of 617 <br />