7c supp 1
ITEM NO: ______7c_Supp 1_____ DATE OF MEETING: August 7, 2012 1 Purpose of Heffron Study Detail the Port's concerns to help the City, County and Arena proponents evaluate the impacts and develop mitigation measures Provide information about Port operations and how those operations will change in the future Detail the types of analyses that should be included in the arena's EIS heffron t r a n s p o r t a t i o n , i n c . 2 What we know and don't know The arena's transportation study was preliminary All admit that an EIS will be required The Port's marine terminals are affected by events in the SoDo today A new arena will exacerbate that impact and add up to 100 weekday events per year No commitment for mitigation heffron t r a n s p o r t a t i o n , i n c . 3 What are the flaws of the arena study? Not an EIS No actual analysis of operations, safety, parking, transit or freight Incorrectly assumed that event traffic doesn't occur during afternoon Incorrectly assumed that Port traffic does not move at night Incorrectly assumed that Port traffic stays west of 1st Avenue S Incorrectly assumed that Friday is not a weekday (or workday) heffron t r a n s p o r t a t i o n , i n c . 4 EIS versus Arena Study Key Arena Safeco Field CenturyLink Arena Study EIS EIS Field EIS # Event Days Trip Generation Intersection Operations Arterial Operations Safety Analysis Parking Analysis Pedestrian Analysis Alternative Sites n/a heffron t r a n s p o r t a t i o n , i n c . 5 EIS versus Arena Study # of Intersections Evaluated Key Arena EIS = 15 Safeco Field EIS = 31 CenturyLink Field EIS = 54 Arena Study = 0 heffron t r a n s p o r t a t i o n , i n c . 6 Port Concerns Additional events at a new arena will make it harder for trucks to reach the Port, increase cargo shipping costs, and affect the Port's ability to retain and attract customers Shippers primary criteria: Travel Time Reliability heffron t r a n s p o r t a t i o n , i n c . 7 Incompatible land uses will affect Port operations heffron t r a n s p o r t a t i o n , i n c . 8 Events reduce the Port's effective operating hours Effect of Mariners Games on I-90 Traffic Entering SoDo heffron t r a n s p o r t a t i o n , i n c . 9 Events reduce the Port's effective operating hours Effect of Mariners Games on Terminal 46 Gate Moves heffron t r a n s p o r t a t i o n , i n c . 10 Port traffic will occur in the evenings and conflict with new arena event traffic Effect of Night Gates on Hourly Traffic Volumes 20% Day Gate Only 18% With Night Shift Gates 16% Morning Commuter Peak Hour Trips Reduced from 13% to 8% of Daily Traffic Terminal Peak Hour Trips 14% Reduced from 14% to 9% of Daily Traffic Percent of Daily Truck Trips 12% Afternoon Commuter Peak Hour Trips 10% Reduced from 5% to less than 3% of Daily Traffic 8% 6% 4% 2% 0% 12:00 AM 1:00 AM 2:00 AM 3:00 AM 4:00 AM 5:00 AM 6:00 AM 7:00 AM 8:00 AM 9:00 AM 10:00 AM 11:00 AM 12:00 PM 1:00 PM 2:00 PM 3:00 PM 4:00 PM 5:00 PM 6:00 PM 7:00 PM 8:00 PM 9:00 PM 10:00 PM 11:00 PM heffron t r a n s p o r t a t i o n , i n c . 11 Street vacations will exacerbate congestion along the Port's main freeway access routes I-90 & I-5 T-46 T-5, 18 & 30 S Massachusetts St heffron t r a n s p o r t a t i o n , i n c . 12 Additional pedestrian and vehicular activity on Holgate Street will increase the risk for train-related collisions and rail and road system delays heffron t r a n s p o r t a t i o n , i n c . 13 Holgate Street Crossing After Event heffron t r a n s p o r t a t i o n , i n c . 14 Concurrent events greatly exacerbate congestion to, from, and within SoDo Findings from King County Expert Review Panel heffron t r a n s p o r t a t i o n , i n c . 15 Concurrent events greatly exacerbate congestion to, from, and within SoDo Findings from King County Expert Review Panel Weekday Events Weekend Events Base Banner Base Banner Year Year Year Year Safeco & CenturyLink Field 65 79 46 51 # of Concurrent Events 1 1 5 5 New Arena 71 101 33 41 Grand Total 136 180 79 92 # of Concurrent Events 7 23 10 17 heffron t r a n s p o r t a t i o n , i n c . 16 Alternative sites have not been considered Ten alternative sites were evaluated for Safeco Field Five sites in vicinity of Kingdome Myers Way near Olson Place Seattle Commons South Lake Union Bus Barn Site at 5th & Mercer Sand Point at Magnuson Park heffron t r a n s p o r t a t i o n , i n c . 17 Arena has not detailed its mitigation needs or identified funding for mitigation Additional Parking Pedestrian Improvements Public Benefits for Street Vacations Police-officer control Street system improvements Traffic management Trip reduction plan heffron t r a n s p o r t a t i o n , i n c . 18 What needs to be done? An EIS must be performed for arena Evaluate alternative sites Identify mitigation measures that retains Port operations Work with the Port on event traffic controls Commit to mitigation with funding and implementation strategy heffron t r a n s p o r t a t i o n , i n c . 19
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