cso-ltcp gowanus canal-vs2€¦ · post-superfund project 126 67 41 58 before (471 mgy) after (263...
TRANSCRIPT
NOTES: (1) Includes Design, Design Services during Construction, Construction, and Construction Management Costs, escalated per the implementation schedule.
ELEMENTS OF THE LTCP PLAN
1.
2.
Continue operations of the Flushing
Tunnel in accordance with its operational
plan
Implementation of a project to mitigate
foam generated from the Flushing Tunnel.
EXISTING PROJECTS COST
Flushing Tunnel
Gowanus Pumping StationReconstruction
1.
2. $198M
STATUS
Operational since 2014
Operational since 2014
ELEMENTS OF THE SUPERFUND PLAN
SUPERFUND COST
Probable Bid Cost:
$670MTotal Escalated Cost (1):
$932M
1.
2.
8 MG Tank at RH-034
4 MG Tank at OH-007
GREEN INFRASTRUCTURECon�nue to implement Green Infrastructure Program
Gowanus Pumping StationFlushing Tunnel
Gowanus CanalImproving Water Quality through Reducing Impacts of Combined Sewer Overflows*
* Combined Sewer Overflow (CSO): When the sewer system is at full capacity, a diluted mixture of rain water and sewage may be released into local waterways. This is called a combined sewer overflow (CSO).
LTCP was submitted to DEC on June 30, 2015. DEC approved the LTCP on March 29, 2017.
NOTES: (1) Initiate demolition work prior to final design completion. (2) Schedule for 4 MG Tank is pending.
BENEFITS TO GOWANUS CANAL
CSO
Dis
char
ge V
olum
e (M
GY)
Pre-ExistingProject(1)
Post-SuperfundProject
126
67
41
58
BEFORE(471 MGY)
AFTER(263 MGY)
AFTER(115 MGY)
179
Post-ExistingProject
RH-034
RH-035
OH-007
RH-031
Other
8 MG Tank at RH-034
Initiate Final Design
Final Design Completion
Construction Notice to Proceed
Construction Completion
2017SUPERFUND MILESTONE SCHEDULE 2019 2021 2023 2025 20292027
1/2017
6/2020
5/2020(1)
9/2028
76% CSO Volume Reduction
44%CSO Volume
Reduction
56%CSO Volume
Reduction
137
58
46
5
17
37
46
5
17
10
Gowanus CanalImproving Water Quality through Reducing Impacts of Combined Sewer Overflows
(1) Pre-Existing Project CSO volumes reflect conditions without Waterbody Watershed Facility Plan (WWFP) Projects, Green Infrastructure and other sewer improvements.