2009-07-28_PWETC_AgendaPacket - Laserfiche WebLink

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Member Vanderwall suggested investigating the idea of sweeping the streets a second time during the year after the seeds have fallen from the trees. Assets are not in place yet to do this however. Member DeBenedet restated the list of topics to be discussed at the Joint Meeting: • Assistance to the City Council as to the review of the asphalt plant aspects • Review of the Rice Street and Highway 36 interchange • Twin Lakes storm water plant • Storm Water Report • Discussion with Eureka recycling a second clean up date Member Gj erdingen asked about the out of date minutes for the PWETC meetings on the City website. Duane Schwartz stated he would discuss this with his staff to get it updated. Duane Schwartz asked if discussing the organized waste collection topic should be discussed at the Joint Meeting. Member DeBenedet stated it should be discussed. 6. Rice Street Interchange Noise Wall Process and Bridge Aesthetics Presentation Duane Schwartz presented an overview of the prof ect that will be shown to the City Council. The presentation started with a map of the project. Duane Schwartz stated since there is federal funding for this project, an environmental impact review is required. 69 decibels is the key value used to trip a federal funding mechanism for noise abatement on highway projects. According to traffic noise analysis regulations, Rice Street and County Road B are exempt from state noise standards. The standards for Highway 36 are 65 decibels during the day and 55 decibels at night. The project is required to conduct an impact analysis by collecting data, run computer models and assesses the results. If necessary a mitigation assessment would then be done. In a mitigation assessment a mitigation analysis would be conducted by locating barriers and running computer models to determine cost effectiveness and acoustical effectiveness. The results of this analysis show both sides of Highway 36 experience noise levels above State Standards today. A noise wall along the south side of Highway 36 did not meet MnDOT's cost effectiveness criteria therefore the following results will focus on the North West quadrant of the interchange. Impact analysis results of the area north of Highway 36 show the current levels for night time range from 58 to 67 decibels and the projected levels range from 59 to 67 decibels. The standard level is 55 decibels. The current levels for daytime range from 65 to 68 decibels and the projected levels range from 65 to 69 decibels. The standard level is 65 decibels. Since these levels exceed the standards, a Mitigation Assessment is necessary. 4