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..._ n- ,s> -t`i a��`�� -'`'��:�>_z-':.;1 TECHNICAL MEMORANDUM TO: FRUM: RE: DATE: Wenck Associates, Inc. 7600 Plorwcr Creek Ctr. P.O. Box 249 N.aple Plain, MN 55359-02q9 17631479-4200 FaK �763) 479-q242 E-malt: wenckmp�wenck,com Kent Peterson 8ituminous Roadways Edward Terhaar, P,E. Wenck Associates, Inc. Opinion of Edward Terhaar, P.E. on Traffic Impacts Associated with the Proposed Bituminous Roadways Asphalt Plant in Roseville, MN October 8, 2010 The traffic information presented in the EA W was reviewed relative to comments reccived. As shown in the EAW, the proposed project is expected to generate 594 trips per day under standard operations and 674 trips per day under maximum operations. The number of trips generated is based on asphait production at the plant and is not based on operating hours. The maximum amount �f asphalt production at the proposed plant would be 5,000 tons per day white the standai�d operating conditions would produce 2,500 to 3,000 tons per day. The daily trip estimates account for trucks, employees, and vendors that would access the site during a 24 hour period to meet the production needs of tl�e proposed project. However, the proposed project would not typically operate for a contintious 24 hour period, but would instead operate for 14 hours from 6 am to 8 pm under normal conditions. As a result, the maximum possible traffic impacts potentially created by the proposed project wouid be the production of the maximum af 5,000 tons of asphalt per day within the normall4 hour work day. This scenario would entail the largest amount of trucks entering and leaving the project site in the shortest poteniial operational scenario. During the weekday a.m. peAk hour, the project is expected to generate 5 employee trips, 47 truck trips, and 4 vendor trips during maximum asphalt production. This equates to 56 trips during the weekday a.m. peak hour. During the �veekday p,m. peak hour, the project is expected to generate 5 cmployee trips, 46 truck trips, and 4 vendor trips. This equates to 55 trips during the weekday p.m. peak hour. As stated within the EAW under the Question 21 heading, a Traffc 1►npact Study is required if the peak hour traffic generation exceeds 250 trips or if the daify generation exceeds 2,�00 trips. As sho�vn above, both the hourly and the daily ma�imum trip generation numbers are belotiv the identified thresholds and therefore a Traffic Impact Study is not required. �.. �..► .�' �Trrl�nicelu7a25-IAtuminous R111 700a Roxwlle Cif�tr�c data?Tr�IFc commems t<spew��e 10� 8-^.010.1C�4-3c ��