1
Piney Branch Drainage
AreaPiney Branch
Tunnel
Rock Creek
049
Piney Branch Stream
Rock Creek
Current Plan Proposed Plan
049
CSO Outfall
CSO Outfall
16th
St
16
th S
t
Irving St Irving StPiney Branch Stream
Piney Branch CSO Controls
Current and Proposed Plan for Rock Creek
N
Piney Branch Drainage
Area
N
$60 M of Green Infrastructure in
Piney Branch
2
029 028
027026
025 024
022
020
Potomac Tunnel
I-66
021
Key
Br.
Lincoln Memori
al
Kennedy Center
029 028
027026
025024
022
021
020
Potomac Tunnel
I-66
Key
Br.
Lincoln Memori
al
Kennedy Center
Add 75 mgd to wet weather treatment system at Blue Plains
Current Plan Proposed Plan
Current and Proposed Plan for Potomac River
N N
$30 M of Green Infrastructure for CSO 027, 028, 029
$10 M to separate CSO 025, 026
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:
Potomac(Cumulative)
Rock Creek(Cumulative)
Spend $10 M by 2019 Spend $3 M by 2016
Spend $20 M by 2023 Spend $15 M by 2019
Spend $30 M by 2028 Spend $30 M by 2024
Spend $40 M by 2032 Spend $45 M by 2027
Spend $60 M by 2032
Total: $40 million Total: $60 million
Gray Infrastructure:
Place hybrid Potomac Tunnel in operation by 2030
Proposed Consent Decree Amendments and Schedule for Green Infrastructure
6
Important Dates
Design ConstructionRFP NTP Completion
Design-Build
Nov 2015
2016 2022
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
NE Boundary Tunnel Alignment
7
Construction Staging Areas
Typical Diversion Facility
8
Construction Staging Areas
Mount 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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