combined sewer overflow long term control plans...is used to convey both sanitary and storm flows....
TRANSCRIPT
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Citywide Public Meeting
December 11, 2014
Combined Sewer Overflow
Long Term Control Plans
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Agenda
1 New York City Wastewater Infrastructure
2 Long Term Control Plan (LTCP)
3 Green Infrastructure Program
4 Questions and Comments
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New York City
Wastewater Infrastructure
Emily Lloyd
Commissioner
DEP
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What is a Combined Sewer Overflow?
NYC’s sewer system is approximately 60% combined, which means it
is used to convey both sanitary and storm flows.
When the sewer system is at full capacity, a diluted mixture of rain water and
sewage can be released into local waterways. This is called a combined sewer
overflow (CSO).
65% to 90% CSOs are fully captured at treatment plants.
Down
Spout
Catch Basin
Combined
Sewer Outfall
Sewer
Regulator
Dry Weather
Conditions
City Sewer Main
Building Sewer
Connection
Down
Spout
Catch Basin
Stormy Weather Conditions
Combined
Sewer Outfall
Sewer
Regulator
City Sewer Main
Building Sewer
Connection
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Major Historical Timeline for Wastewater Infrastructure
Clean
Water Act
1972
CSO
Consent Order
2005
Modified CSO
Consent Order
2012
1973 – 2011 Upgraded 12 WWTPs to Secondary Treatment and built 2 new WWTPs
1995 – 2005 Implemented Citywide Floatables Program
1999 – 2020 Upgrade Biological Nitrogen Removal at 70% of WWTPs
2013 – 2017 Develop LTCPs AC = Alley Creek
CSO = Combined Sewer Overflow
FC = Flushing Creek
LTCP = Long Term Control Plan
1995 – 2030 Construct Grey / Green Infrastructure to Mitigate CSOs
1967: Newtown Creek WWTP Commissioned
1972: Spring Creek CSO Facility Commissioned
2005 – 2011 Develop WWFPs
$40 Billion
$34 Million
$4.2 Billion
$1.1 Billion
CSO
Order
1992
OMB Records & 10-yr Capital Plan
OMB Records & 10-yr Capital Plan
2004 NYCDEP’s CSO White Paper
OMB Records &
10-yr Capital Plan
OMB = Office of Management and Budget
WWFP = Waterbody / Watershed Facility Plan
WWTPs = Wastewater Treatment Plants
SOGR = State of Good Repair
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NYC CSO Reductions A
nn
ual
CS
O V
olu
mes (
BG
Y)
0
20
40
60
80
100
120
1980 1990 2000 2010 2020 2030
CSO Capture: Current = 79%1
Future Estimate = 82%2
1) April 2014 CSO Annual Best Management Practices (BMP) Report
2) 2030 LTCP Baseline Scenario for Grey & Green Infrastructure Estimate
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Fecal Bacteria Improvements
2013 1985
Data from Harbor Survey Program
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What is a Long Term Control Plan?
Long Term Control Plan (LTCP)
identifies appropriate CSO controls to achieve
applicable water quality standards
consistent with the Federal CSO Policy and Clean Water Act
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Historical Capital Spending
• From FY 2002 to FY 2014, $15.9 Billion (61%) of capital commitments were
mandated. ($9.9 billion was spent on Harbor Water Quality Improvements alone)
$1.2 $0.9
$1.3 $1.2 $1.3
$3.3
$2.5
$1.6
$1.2
$0.4 $0.3 $0.3 $0.5
$0.5
$0.4
$0.4
$1.1
$0.4
$0.4
$0.6
$0.6 $1.5
$0.9
$1.4 $1.2
$0.7
$0.0
$0.5
$1.0
$1.5
$2.0
$2.5
$3.0
$3.5
$4.0
2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014
Mandated Non-Mandated
Capital Commitments (in billions)
Total Commitments: $26 Billion
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• The primary source of funding for DEP’s capital projects is the issuance of tax-
exempt debt by the New York City Municipal Water Finance Authority
• From FY 2002 to FY 2014, capital expenditures that were funded by debt issuance
totaled $25.5 Billion, and debt service rose by 142% from $629 Million to $1.5 Billion
per year
• DEP is currently preparing a new, proposed Ten Year Capital Plan; if projects are
added, the projected capital commitments and expenditures graphed below will
increase.
Past Capital Costs and Current Debt Service
$0.0
$1.0
$2.0
$3.0
$4.0
2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
$ in
Bil
lio
ns
Fiscal Year
Commitments Expenditures Net Debt Service
Actual Projected
Capital Improvement Program amounts are as reported in the New York City Municipal Water Finance Authority Fiscal 2015 Series EE Official Statement
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NYC Income Levels and Poverty Rates
2013 MHI
US $52,250
NYC $52,223
Bronx $33,009
Brooklyn $47,520
Manhattan $72,190
Queens $56,599
Staten Island $69,633
• While NYC Median Household Income (MHI) is comparable to national average, cost of living and housing burden for NYC residents is generally much higher.
% of individuals living
below federal poverty level (2013)
US 15.8%
NYC 20.9%
Bronx 30.9%
Brooklyn 23.3%
Manhattan 18.9%
Queens 15.3%
Staten Island 12.8%
• ~ 21% of NYC population (> 1.7 million people) lives below the federal poverty level
• ~ 19 % of elderly population lives in poverty
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Home Water Assistance Program
• DEP has partnered with the Human Resources Administration (HRA), which administers the Federal Home Energy Assistance Program (HEAP), to provide assistance to low income households
• More than 12,500 homeowners have received a credit of $115.89
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Avg. Wastewater Bill Compared to HH Income
• Currently ~28% of households (HH) pay 2% of income or more on wastewater/sewer bill
• Estimating modest future rate and income increases (based on costs in the CIP and
historic Consumer Price Index data, respectively), this could increase to 36% in 2022
INCOME BRACKET % of
Households
Less than $20,000 22%
$20,000 to $39,999 18%
$40,000 to $59,999 14%
$60,000 to $74,999 9%
$75,000 to $99,999 11%
$100,000 to $199,999 18%
$200,000 or more 8%
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Long Term Control Plan
Jim Mueller, P.E.
Assistant Commissioner
DEP
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Current NYS Water Quality Standards
SB – Bathing
SC – Bathing / Fishing
I – Boating / Fishing
SD – Fish Survival
SA – Shellfish
Waterbody
Classifications
New York State
Saline Surface Water Quality Standards
Class
Bacteria (when disinfection is practiced)
Dissolved
Oxygen (acute, never less
than) Total Coliform Fecal
Coliform
Enterococ
ci
SA Median
≤ 70 MPN 100 ml - -
≥ 4.8 mg/l (daily avg)
≥ 3.0 mg/l
SB Monthly Median
≤ 2,400/100 ml
80% ≤ 5,000/100 ml
Monthly GM
≤ 200/100 ml
*Geometric
Mean
≤ 35/100 ml
≥ 4.8 mg/l (daily avg)
≥ 3.0 mg/l
SC Monthly Median
≤ 2,400/100 ml
80% ≤ 5,000/100 ml
Monthly GM
≤ 200/100 ml
*Geometric
Mean
≤ 35/100 ml
≥ 4.8 mg/l (daily avg)
≥ 3.0 mg/l
I Monthly GM
≤ 10,00/100 ml
Monthly GM
≤ 2,000/100 ml - ≥ 4.0 mg/l
SD - - - ≥ 3.0 mg/l
*Applicable to coastal waters. Does not apply to tributaries.
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What is a CSO Consent Order?
CSO Consent Order
an agreement that settles past legal disputes
without prolonged litigation
requires DEP to develop LTCPs and mitigate CSOs
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2012 CSO Consent Order
Builds upon success of
2005 CSO Consent Order
Over 120 Consent Order
milestones previously
achieved
Recommended plans from
Waterbody Watershed Facility
Plans are incorporated
Projects about 90% of the
NYC waterbodies will attain
existing standards
Flushing Bay CSO Retention Facility
Paerdegat Basin CSO Retention Facility
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CSO Improvement Projects
1995 – 2013:
4 CSO Storage Tanks (118 MG)
Pumping Station Expansion (+60 MGD)
Wet Weather Maximization (Tallman Island)
Dredging (Paerdegat & Hendrix Creek)
Floatables Control (Bronx & Gowanus)
Aeration (English Kills)
2015 – 2020:
Aeration (Newtown Creek)
Regulator Modifications (Westchester Creek,
Newtown Creek, Jamaica Tributaries)
Sewer Work (Pugsley Creek, Fresh Creek HLSS, Belt
Pkwy Crossing, & Flushing Bay Low Lying Sewers)
Plant Wet Weather Stabilization
Dredging (Flushing Bay)
Costs:
~ $2 Billion incurred to date
~ $700 Million future capital
11 Waterbody /Watersheds:
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LTCP Submittal Dates
CSO Watershed LTCP Due Date
Alley Creek Submitted to DEC June 2014
Westchester Creek Submitted to DEC June 2014
Hutchinson River Submitted to DEC September 2014
Flushing Creek December 2014
Bronx River June 2015
Gowanus Canal June 2015
Jamaica Tributaries & Bay June 2016
Coney Island June 2016
Flushing Bay June 2017
Newtown Creek June 2017
Citywide* December 2017
*The Citywide LTCP shall include the East River and Open Waters.
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LTCP Process
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LTCP Process and Public Involvement
ONGOING PUBLIC/STAKEHOLDER INPUT
Existing Information
Review
Data Collection &
Analysis Modeling
Alternatives Development & Evaluation
LTCP DEC Review
Kickoff
Meeting
Alternatives
Meeting
Final Plan
Review
Meeting
LTCP Due
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Model Inputs & Assumptions
– 2040 DWF
– Plants at 2XDDWF
capacity
– Grey infrastructure from
approved WWFPs
(Appendix A of 2012 ACO)
– Current phase of GI
implementation shown in
Slide 38
– Post-cleaning sediment
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Water Quality Projection
Assumptions:
10 year rainfall simulations
performed for pathogens for:
Baseline Conditions
100% CSO Reductions
Preferred Plan
Screen and compared alternatives
using 2008 rainfall
LTCP CSO
Volume Baseline:
2008 JFK Rainfall & Tides
Revised 2040 dry weather flow
projections
Plants at 2XDDWF capacity
Updated imperviousness based
on satellite imagery
Grey infrastructure from
approved WWFPs
Green infrastructure projections
Post-cleaning sediment
conditions in interceptor
Model Inputs & Assumptions
23 2XDDWF = 2 times design dry weather flow
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Alternative Screening
1. Bacteria Source Component
Analysis
CSO, stormwater and direct drainage
2. Gap Analysis for Water Quality
Standard Attainment
Calculate bacteria and dissolved
oxygen for baseline conditions
Calculate bacteria and dissolved
oxygen for 100% control conditions
3. Matching CSO Scenarios to
CSO Engineering Control
Alternatives
Inc
rea
sin
g C
SO
Re
du
ctio
n
100%
75%
50%
25%
Storage
Treatment
System Optimization
Source Control
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Traditional CSO Mitigation Toolbox
System
Optimization
Regulator
Modifications Parallel Interceptor
Inflatable Dams
Bending Weirs
Control Gates
Pump Station
Expansion
CSO
Relocation
Gravity Flow
Tipping to Other
WWTPs
Flushing Tunnel
Reversal
Flow Tipping with Conduit/Tunnel and
Pumping
Treatment
Sewer Cleaning
Maximize Flow to
the WWTP
Outfall
Disinfection
Retention Treatment
Basin (RTB) with
Disinfection
High Rate
Clarification (HRC)
Storage In-System Shaft Tank Tunnel
INCREASING COMPLEXITY
INC
RE
AS
ING
CO
ST
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LTCP Submittal Status
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Alley Creek LTCP
Submitted to DEC June 2014
LTCP Under DEC Review:
Pilot Study
Recreational Season Disinfection Facility at the Existing CSO Facility:
Recreational season (May 1st – October 31st)
99% bacteria kill
Cost $ 11.3M
Use Attainability Analysis
(UAA) recommended as SB
water quality standards are
not attainable
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Westchester Creek LTCP
Submitted to DEC June 2014
LTCP Under Review by DEC:
Continue to implement the WWFP
recommendations: Pugsley Creek
parallel sewer and regulator
modifications
Implement a post construction
monitoring
Use Attainability Analysis
(UAA) recommended as SB
water quality standards are
not attainable
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Hutchinson River LTCP
Submitted to DEC September 2014
LTCP Under DEC Review:
Recreational Season Disinfection of 50 MGD of CSO in a 1,200 foot long, 10 foot
diameter pipe, including a new outfall to the river:
Construction cost $90M
Annual O&M cost $1.25M
Disinfection during
recreational season only
(May 1st – October 31st)
Use Attainability Analysis
(UAA) recommended as SB
water quality standards are
not attainable
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Flushing Creek LTCP
To be Submitted to DEC
December 2014
LTCP will recommend:
Recreational Season Disinfection
of existing CSO Facility, TI-010
and TI-011 outfalls
Construction cost ~$15M
Annual O&M cost $450K
Disinfection during
recreational season only
(May 1st – October 31st)
Flushing Creek
Flushing Creek
CSO Retention Facility
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Upcoming LTCP Submittals
Gowanus Canal
June 2015
2015
Bronx River
June 2015
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Upcoming LTCP Submittals
Coney Island Creek
June 2016 Jamaica Bay
June 2016
Flushing Bay
June 2017
Newtown Creek
June 2017
2016
2017
Citywide
December 2017
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Green Infrastructure
Program Update
Angela Licata
Deputy Commissioner
DEP
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GI Milestones and Program Focuses
2011-2015 2016-2020 2021-2025 2026-2030
1.5% 4% 7% 10%
Heavy ROW Focus
Inter-agency partnerships, GI
standards, Area-wide approach for
design, construction &
maintenance
Continuing ROW Remaining ROW
All work continuing
until 10% target is
reached
Early Projects/Establish Onsite
Program
Develop MOUs with partner
agencies, create design
guidelines, site analysis,
design/construct projects with
NYCHA and DOE
Greater Onsite
implementation
Further design and
construction, create
design standards for
onsite GI practices
Continued Onsite
implementation
Planning/Analysis for additional
GI tools
Pilot construction and monitoring
Standardize
additional GI tools
Continued
implementation of
innovative designs
and GI tools
Innovative design and
development
Further
development of new
tools
R&D Program
2016
Performance
Metrics Report
2017
Citywide LTCP
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Area-Wide GI Contracts – ROW Construction Status
CSO Tributary Area
Winter 2014/2015
In Construction
Spring 2015
In Design
Design Initiated
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Area-Wide Construction
DEP and agency partners currently have 19 active
construction contracts. Each contract consists of
approx. 150-200 ROWBs at a time.
Phase 1
(2 Construction
Contracts)
Phase 3
Phase 2
(2 Construction
Contracts)
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Onsite Green Infrastructure Opportunities
Public Onsite Retrofit Projects
DEP continues to work with partner agencies to
assess all possible green infrastructure retrofit
opportunities within Priority CSO Tributary Areas:
• NYC Department of Parks and Recreation
(DPR)
Community Parks Initiative - $36 M Partnership
• NYC School Construction Authority (SCA)
• NYC Department of Education (DOE)
• NYC Housing Authority (NYCHA)
• NYC Department of Cultural Affairs (DCA)
• Public-Private Partnership with Trust for Public
Land DOES/SCA
Green Infrastructure Grant Program
29 active projects; Fall 2014 application closed
November 13, 2014.
Bioretention – Hope Gardens Brooklyn
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Maintenance of Green Infrastructure
ROW Maintenance:
• DEP funds 3 DPR crews to maintain
sites in the ROW on a weekly or bi-
weekly schedule.
• Future Maintenance Plans – new
hires being planned now for near
term; approximately 125 jobs for the
ROW maintenance to be available.
Onsite Maintenance:
• Individual maintenance agreements
with each partnering agency.
GI Maintenance Crew (Brooklyn)
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Neighborhood-Scale Demo Monitoring Results
Demo Area 1 Demo Area 2 Demo Area 3
Total Tributary Drainage Area 24.1 ac 22.7 ac 19.3 ac
Impervious Cover* 81% 92% 92%
Design Managed Area for 1 inch Rainfall
(% of Impervious Tributary Drainage Area*)
1.2 ac
(6.1%)
2.5 ac
(12.0%)** 0.9 ac (5.1%)***
Measured Managed Area for 1 inch Rainfall
(% of Impervious Tributary Drainage Area*) 3.5 ac (17.9%) 3.9 ac (18.7%)
0.9 ac
(5.1%)
Measured Managed Volume for 1 inch Rainfall 12,700 ft³ 14,300 ft³ 3,200 ft³
% Managed Area for 1 inch Runoff from Impervious
Area* across all three Demo Areas 14.3%
*Based on impervious coverage as measured by analysis of multi-spectral infrared satellite imagery.
**Excludes on-site GI. Including on-site would increase design managed area to 3.0 acres.
***Excludes on-site GI. Including on-site would increase design managed area to 1.6 acres.
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Acknowledgments
Angela Licata
Deputy Commissioner
DEP
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LTCP Public Participation
Eric Landau
Associate Commissioner
DEP
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Public Participation
Goal:
Raise awareness, foster understanding, and encourage input on
LTCP development.
Activities:
Annual citywide public meetings rotating across boroughs
Meeting with key stakeholders and organizations
Local public meetings in each watershed and existing forums
Briefings with elected officials and their staff
Communication Tools:
Program Website
Social Media
Advisories & Notifications
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Next Steps
Please visit www.nyc.gov/dep to access:
LTCP Public Participation Plan
Presentation, handouts and poster boards from kick-off meeting
Links to Waterbody/Watershed Facility Plans
CSO Order including LTCP Goal Statement
NYC’s Green Infrastructure Plan
Green Infrastructure Pilots 2011 Monitoring Results
Real-time waterbody advisories
Upcoming meeting announcements
CSO Quarterly Reports
Other LTCP updates
Comments can be submitted at any information station or sent to:
New York City DEP at: [email protected]
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Questions and Comments?