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Current and Proposed Plan for Rock Creek

Current and Proposed Plan for Rock Creek. N. N. Piney Branch CSO Controls. Current Plan. Proposed Plan. $60 M of Green Infrastructure in Piney Branch. 16 th St. 16 th St. Rock Creek. Rock Creek. Piney Branch Tunnel. Piney Branch Drainage Area. Piney Branch Drainage Area. 049.

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Current and Proposed Plan for Rock Creek

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  1. Current and Proposed Plan for Rock Creek N N Piney Branch CSO Controls Current Plan Proposed Plan $60 M of Green Infrastructure in Piney Branch 16th St 16th St Rock Creek Rock Creek Piney Branch Tunnel Piney Branch Drainage Area Piney Branch Drainage Area 049 049 Irving St Irving St CSO Outfall Piney Branch Stream CSO Outfall Piney Branch Stream

  2. N N Current and Proposed Plan for Potomac River Current Plan Proposed Plan $30 M of Green Infrastructure for CSO 027, 028, 029 $10 M to separate CSO 025, 026 Potomac Tunnel 029 029 028 028 Key Br. 027 027 Key Br. 026 026 025 025 024 024 022 022 Potomac Tunnel Kennedy Center Kennedy Center 021 021 Add 75 mgd to wet weather treatment system at Blue Plains I-66 Lincoln Memorial I-66 Lincoln Memorial 020 020

  3. Clean Rivers Projectin Planning Stage Piney Branch Early Action Green Infrastructure Project Install Green infrastructure practices to mitigate CSO overflow to Rock Creek Design-Build delivery method Draft RFQ to be developed July 2014 Estimated contract value: $3 million Issue RFP end of 2014 Construction period: June 2015 – 2016

  4. DC Water’s Green Infrastructure Challenge Seven design award winners selected Award winners announced January 2014 RFQ/RFP for final design/construction will be issued in Third Quarter of 2014 for construction Construction of award winning projects will start in 2015 For more information, download the Green Infrastructure Challenge Briefing Document: www.dcwater.com/greenchallenge

  5. Green Infrastructure: Gray Infrastructure: Place hybrid Potomac Tunnel in operation by 2030 Proposed Consent Decree Amendments and Schedule for Green Infrastructure

  6. NE Boundary Tunnel Alignment • 23-foot diameter tunnel, 70 to 180 feet deep, 28,600 feet long • 5 shafts and 5 diversion structures • Estimated construction value: $500 – $600 million • Delivery method: Design-Build on an accelerated schedule

  7. Construction Staging AreasTypical Diversion Facility

  8. Construction Staging AreasMount Olivet Road (.73-acre staging area)

  9. Clean Rivers Program: Northeast Boundary Tunnel – late 2015 procurement for Design-Build and construction management Green Infrastructure – start work mid-2015 Upcoming Design, Design-Build, and Construction Management

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