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Page 2 March 8, 2001 because of the reasonable level of service (LOS) on the roadways in the vicinity of the proposed project, Twin Lakes Parkway is not necessary to support traffic generated by the proposed project. Therefore, it is not necessary to include it in the air and noise analysis. 3. Prior to the March 7,2001 conference call, both the traffic analysis and the air analysis were modified to exclude the construction of Twin Lakes Parkway. Preliminary results of these analyses indicated that the exclusion of Twin Lakes Parkway from the analyses does not significantly affect the results of the air and noise analyses submitted as part of the ISP Application. From our conversation during the March 7, 2001 conference call, it is understood that the submittal of an analysis demonstrating CO and noise levels are within acceptable levels, even if Twin Lakes Parkway is not constructed, allows the MPCA to prepare a final permit without including special conditions regarding roadway improvements (eg. Twin Lakes Parkway). The conclusion of the above-summarized conference call was to provide the MPCA with the analyses that support item 3 above. Attached please find a memorandum dated March 7, 200 I from Benshoof to Liesch. This memorandum includes information illustrating traffic volume estimates at the County Road C/Cleveland A venue and County Road D/Cleveland Avenue intersections for conditions including and excluding Twin Lakes Parkway. Comparison of traffic volumes at each intersection indicate relatively small increases in traffic movements due to the exclusion of Twin . Lakes Parkway. LOS analysis sheets and a table summarizing the LOS at each intersection are also included with Benshoof s memorandum. ... Liesch used the information from this memOlandum to develop air and noise level calculations excluding the construction of Twin Lakes Parkway. Liescn's results are presented in summary format as well as detailed model output. Results for both the January 2001 ID1d the March 2001 , model runs are included to allow comparison of the results. As can be seen from the attached information, the exclusion of Twin Lakes Parkway from the traffic analysis does not significantly affect air and noise levels submitted with the original ISP Application. Innocent, thanks again for taking the time to work out these issues with us. We anticipate that this will allow you to prepare the draft ISP for this project without including any special conditions regarding roadway improvements. If you have any comments or questions, don't hesitate to contact me. Sincerely, LIESCH ASSOCIATES, INC. V r-''/ ..' ~--,..,.. w:/ .. CivillEnvironmental Engineer Cc: Mr. Val Orton - First Security Bank, National Association Mr. Dennis Welsch - City of Roseville Mr. Karl Keel - City of Roseville Mr. Peter St. Clair - Bank of America Securities THE LIESCH COMPANIES MINNEAPOLIS, MN MADISON, WI SCOTTSDALE, AZ