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HomeMy WebLinkAboutOn Hold Letter_16-000938 with enclosuresH:\CED\Planning\Current Planning\PROJECTS\16-000938.Clark\17-0107 LUA16-000938 Civil Plan Review Comments.docx DEPARTMENT OF COMMUNITY AND ECONOMIC DEVELOPMENT M E M O R A N D U M DATE: January 7, 2017 TO: Clark Close, Senior Planner FROM: Ian Fitz-James, Civil Plan Reviewer SUBJECT: Utility and Transportation Comments for Valley Medical Center LUA 16-000938 I have reviewed the application for the Valley Medical Center garage and medical office building located on the Valley Medical Center campus at 400 S. 43rd Street. The following items need revision for a complete site plan review. TRAFFIC IMPACT ANLAYSIS COMMENTS 1. The Traffic Impact Analysis prepared by Walker Parking Consultants dated October 17, 2016 has been reviewed by City staff. City staff agrees with the finding that traffic signal is warranted at the north road / S. 177th Street / Talbot Road S. intersection. However, the following items (expansions, additions, and clarifications) are required to address City concerns with traffic impacts resulting from this project and to meet City Traffic Impact Analysis guidelines. a. Per the Traffic Impact Analysis (TIA) Guidelines published by the City, the TIA needs to be signed and stamped by a licensed professional engineer with adequate experience in transportation planning and traffic engineering. Please provide a resume of traffic engineering experience of the engineer for the City project records. b. Accident history and analysis is needed at the intersections of the four site accesses / driveways with Talbot Road S., particularly at the north road / S. 177th Street / Talbot Road S. intersection; and at the S. 43rd Street and Davis Avenue S. intersection. c. Add discussion of existing operational characteristics at the four accesses / driveways with Talbot Road S., particularly at the north road / S. 177th Street / Talbot Road S. intersection; and at the S. 43rd Street and Davis Avenue S. intersection. d. Add discussion of proposed operational characteristics of the employee garage ramp and driveway (i.e. one-way in or two-way). Valley Medical Center – LUA16-00938 Page 2 of 4 January 7, 2017 H:\CED\Planning\Current Planning\PROJECTS\16-000938.Clark\17-0107 LUA16-000938 Civil Plan Review Comments.docx e. Expand discussion of bicycle and pedestrian facilities to include existing pedestrian activity (i.e. pedestrian volumes if available), amenities (i.e. crosswalks, ADA curb ramps, pedestrian signals, etc.), safety, and any increase in pedestrian and bicycle activity from the project, including potential crosswalk and pedestrian crossing traffic control improvements. f. Include a vehicle queuing analysis using Synchro at the four accesses / driveways and Talbot Road S., S. 43rd Street and Talbot Road S., and S. 43rd Street and Davis Avenue S. Synchro printouts should show queuing for the 50 and 90 percentile. g. Add discussion of existing lane configurations and potential future lane configurations. Discussion particularly should include lane configurations at the intersection of the north road and Talbot Road S., and at the intersection of the employee driveway and Talbot Road S. 2. The following minor edits were found by City staff when reviewing the report. Please make the following changes. a. Page 8: First paragraph under “EXISTING TRAFFIC VOLUMES”, “and 9:00 AM” in the third sentence should be relocated to follow after “7:00 AM” in the second sentence. Also, the source of the existing volumes at the S. 43rd Street and Talbot Road S. intersection is not provided. b. Pages 16-20: Provide justification for the percentage trip distribution of traffic accessing the site by turning right on Davis Avenue S. If additional signage directing vehicles to the new MOB site and new parking garage will be provided at this intersection, please note it in the report. c. Page 21: The 277% for right turns from Talbot Road S. to S. 43rd Street should read 27%. d. Page 40: Recommend including a graphic depicting the alternate garage access and a figure showing the AM, Mid-Day, and PM traffic volumes at the existing driveway on Talbot Road S. to be used for garage access. Also on this page, Table 8 in the first sentence under ALTERNATIVE GARAGE ACESS SCENARIO should read Table 10. e. Page 42: Appears that Table 10 in the third paragraph should read Table 12 and that Table 11 in the last paragraph should read Table 13. 3. Based on the City’s review of the traffic volumes presented in the traffic report, the traffic analysis at the north road / S. 177th Street / Talbot Road S. intersection should be expanded to address: a. Proposed signal phase operation. Valley Medical Center – LUA16-00938 Page 3 of 4 January 7, 2017 H:\CED\Planning\Current Planning\PROJECTS\16-000938.Clark\17-0107 LUA16-000938 Civil Plan Review Comments.docx b. Evaluate the need for a southbound right-turn drop lane on Talbot Road S. extending from the north road to north of the employee driveway. When evaluating the drop lane, compare scenarios with and without a traffic signal. c. Evaluate the need for an eastbound two-lane (thru and left turn lane, separate right turn lane) exit for the north road. When evaluating the exit lanes, compare scenarios with and without a traffic signal. d. Evaluate the need for a wider throat and larger curb radius of the ingress lane from Talbot Road S. to the north roadway. Include discussion of potential backups from the existing narrow travel lane into the site. When evaluating the width of the ingress lane, compare scenarios with and without a traffic signal. e. The evaluation of items b-d should also include comparison tables. 4. If the lot located at the intersection of Davis Avenue S. and S. 45th Place will be used for temporary staff parking or a construction laydown area, an additional section describing the impacts from the proposed use will be required in the report. 5. Based on the additional information provided above, City staff will determine if any additional frontage improvements are necessary as required by City code. DRAINAGE REPORT AND SITE PLAN COMMENTS 1. The drainage report submitted for the medical office building is incomplete and not to current standards. The drainage report shall comply with all of the requirements found in the 2017 Renton Surface Water Design Manual (RSWDM). In particular the drainage report and plans shall be revised to show how the project is meeting Core Requirement #9: On-Site BMPs. The project shall meet the Large Lot BMP Requirements found in Section 1.2.9.2.2. On-Site BMPs shall be evaluated for feasibility in accordance with Appendix C of the RSWDM. Porous concrete sidewalk (permeable pavement) is shown on the drainage and utility plan. Permeable pavement shall meet the standards provided in Section C.2.7 of the RSWDM. If permeable pavement is deemed infeasible by the requirements of this section, then additional BMPs shall be evaluated in accordance with the standards found in Section C.1.3.2 of the RSWDM. In addition, the flow control facility is sized using KCRTS. Per Chapter 3 of the 2017 RSWDM, flow control facilities shall be sized using WWHM, MGS Flood, or the Hydrologic Simulation Program Fortran. KCRTS is no longer an approved model for use with the 2017 RSWDM. 2. The 3” water meter is shown incorrectly. A 3” water meter needs to be in a vault with an external bypass per COR Standard Plan 320.4. Update the water plan to show a feasible location for this assembly. Valley Medical Center – LUA16-00938 Page 4 of 4 January 7, 2017 H:\CED\Planning\Current Planning\PROJECTS\16-000938.Clark\17-0107 LUA16-000938 Civil Plan Review Comments.docx GEOTECHNICAL REPORT COMMENTS 1. The infiltration section of geotechnical report for the medical office building references the 2009 KCSWDM for the infiltration testing requirements. The medical office building will be reviewed under the 2017 RSWDM. Please have this section of the report updated to conform to the 2017 RSWDM requirements. In addition, the soils reports shall be amended as necessary to accommodate the infiltration BMP testing requirements to determine feasibility as found in Appendix C of the 2017 RSWDM. Section C.1.3 provides an overview of the soils report requirements for application of On-Site BMPs. Additional feasibility requirements are found for each BMP in Section C.2.