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1'�i �� Public Works Department/Engineering Memo To: Thomas Paschke, Roseville City Planner From: Debra Bloom, City Engineer CC: Kristine Giga, Civil Engineer James Lehnhoff, Arden Hilis City Planner Duane Schwart2, Roseville Public Works Director Mike Darrow, Roseville Community Development Director Craig Vaughn, SRF Date: 8/22/07 Re: Northwestern PUD Agreement conditions At our meeting eariier this week, we finalized the conditions for approval on the Northwestern College PUD application. This memo supercedes all previous memos provided to you. The following conditions have been incorporated into the Northwestern PUD agreement and Council staff report: Utility service • Existing and proposed utility plans, showing all connections to the public systems, shall be provided for the full campus. Provide information regarding existing cast iron pipes that lead from the Pumphouse to Lake Johanna. Stormwater Management Study • Each stage of development must meet the regulatory standards in place at the time of building permit application. All stages of development should recognize the others to ensure that a comprehensive storm water management plan is constructed for the site. • Site impervious coverage shall be consistent with the provisions of City Shoreland Ordinance. • Northwestern will identify and eliminate all direct, untreated discharges to Lake Johanna and Little Lake Johanna as a part of the campus expansion plans. Traffic and Parking Impact Study On page 16 of the Study, TKDA identifies mitigation measures. The Engineering Division has the following comments and subsequent PUD conditions regarding these measures: Mitigation 1 is the signalization of the Fairview/ Lydia Avenue intersection. The additional 2018 analysis indicates that this intersection operates at an acceptable LOS D during the a.m. and p.m. peak hours for cumulative traffic conditions. The LOS D delay threshold for an unsignalized intersection is 25-35 seconds; the LOS E delay threshold is 35-50 seconds. Based on this information the LOS D reported has no additional capacity available to support additional traffic. To address this, TKDA recommends that a traffic signal at Fairview Avenue and Lydia Avenue be installed. In order for a signal to be installed it must meet specific criteria (signal warrants). A cursory level review of the signal warrants (based solely on projected peak hour traffic volumes) indicate that the peak hour warrant 3B will be met under year 2018 cumulative conditions. Typically, the peak hour warrant alone will not justify the installation of a signal, additional analysis will be necessary. A signal is not included in the Counry or Citys long range Capital Improvement Plan. Therefore funding has not been identified and there is no timeline for this improvement. Because the proposed college expansion uses up the additional capacity at this intersection, staff recommends that this mitigation measure reflect these limitations and be changed to an action item that would aid the implementation of the identified improvements. Staff recommends that a condition be added to the PUD requiring: • Northwestern to pay for a Fairview/ Lydia Avenue intersection improvement when it is warranted. A warrant analysis shall be completed as a part of the traffic study update required with each subsequent development phase. If subsequent City Council approved development occurs adding to the volume of traffic being projected • Page 1