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Capital Program Oversight Committee (CPOC) May 23, 2011 Alok Saha, P.E., Program Manager, CPM Infrastructure and Facili

Capital Program Oversight Committee (CPOC) May 23, 2011 Alok Saha, P.E., Program Manager, CPM Infrastructure and Facilities – Line Equipment, Shops & Yard . Mulry Square Fan Plant Quantitative Risk Assessment. Site Location. Mulry Square Fan Plant

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Capital Program Oversight Committee (CPOC) May 23, 2011 Alok Saha, P.E., Program Manager, CPM Infrastructure and Facili

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  1. Capital Program Oversight Committee (CPOC) May 23, 2011 Alok Saha, P.E., Program Manager, CPM Infrastructure and Facilities – Line Equipment, Shops & Yard Mulry Square Fan Plant Quantitative Risk Assessment

  2. Site Location Mulry Square Fan Plant Serving both 7th & 8th Avenue Subway Lines (local & express) * 2

  3. Existing Site 7th Ave. Memorial Tiles Greenwich Ave. 7th Ave. Greenwich Ave. 3

  4. PLENUM PLENUM Key Plan & Design Innovations • Use of Building Information Modeling (BIM) in project design • Relocated 7th Ave. Plenum to above the existing Subway structure • Reduced the Design Heat Load and # of fans • Preserve space for 9/11 memorial tiles display Parking Parking 7th Avenue Greenwich Avenue IRT 1, 2 & 3 trains IND A, C & E trains 4

  5. Lessons Learned – Mitigated Risks(Building on the experiences of prior Fan Plant Projects) 5

  6. Air Flow Schematic - Exhaust 6

  7. Rendering of the Final Facade 7

  8. Objectives of Risk Assessment • Confirm 80% confidence level in: • Project base cost estimate - $89.0M • Construction duration – 40 Months • Ensure a clear path to successful project delivery 8

  9. Trend of Construction Duration & Cost (1990 – 2012 forecast) 9

  10. Risk Drivers and Mitigations (cost and schedule savings) 10

  11. Risk Based Project Cost & Schedule Overall Project Cost-Risk-Based-Cost Estimate Risk-Based Project Duration $89.0 40.0 $88.9 40.6 11

  12. Cost and Schedule Savings *The total project cost includes bid, force accounts as well as other third party costs such as utilities and traffic agents 12

  13. Thank You

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