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EXISTING PROJECTS
GREEN INFRASTRUCTURECon�nue to implement Green Infrastructure Program
On December 30, 2014, the City submitted a Long Term Control Plan (The Plan) for Flushing Creek followed by Supplemental Documentation to The Plan submitted on May 22, 2015 to the New York State Department of Environmental Conservation (DEC). Throughout The Plan's development, the City collected water quality data, performed extensive modeling, held multiple public meetings and analyzed potential solutions based on costs and anticipated water quality benefits. To review this analysis and data visit www.nyc.gov/dep/ltcp. DEC approved the City's recommended plan on March 7, 2017.
ELEMENTS OF THE PLAN
(1) Includes Design, DSDC, Construction, and CM
Probable Bid Cost:
$10.7MTotal Escalated Cost(1):
$18M
COST
Seasonal Disinfection at CSO Retention Tank and CSO Outfall TI-011
CSO Storage Facility
Vortex Facilities
1.
2. $363M Operational since 2007
Completed Full Scale Demonstration
COST STATUS
TI-010 TI-011
CSO Storage Facility
Flushing CreekImproving 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).
Seasonal Disinfection
Initiate Design
Final Design Complete
Construction Begins
Construction Complete
SCHEDULE 2018 2019 2020 2021 2022 2023 2024 2025
9/2018
9/2022
9/2023
12/2025
While the existing projects in Flushing Creek successfully reduced CSO Volume by 50% the approved plan focuses on reducing bacteria in
Flushing Creek during the recreational season.
BENEFITS TO FLUSHING CREEK
TOTAL(1,201 MGY)
TOTAL(1,201 MGY)
TOTAL(2,413 MGY)
50%CSO Volume Reduction
1,832
713
492
404
713
404
89
84
Pre-Existing Projects(2) Post-Existing Projects Post-LTCP Projects
CSO
Dis
char
ge Vo
lum
e (M
GY)
TI-010 TI-011 TI-022
584 MGYDisinfected CSO Volume Included
84
Flushing CreekImproving Water Quality through Reducing Impacts of Combined Sewer Overflows
(2) Pre-Existing Project CSO volumes reflect conditions without Waterbody Watershed Facility Plan (WWFP) Projects, Green Infrastructure and other sewer improvements.