The Metropolitan DistrictThe Metropolitan District

Clean Water Project UpdateClean Water Project Update

Connecticut Watershed Network Conference Connecticut Watershed Network Conference

May 11, 2012May 11, 2012

The Clean Water ProjectThe Clean Water Project

In response to a DEP Consent Order & EPA Consent Decree

Multi-phase program that will take 15 years to complete (2007-2021)

The project’s goals Reduce the overflows of sewage Reduce nitrogen levels discharged to the

Connecticut River Reduce health impacts from backups

The Clean Water ProjectThe Clean Water Project

In 2006, voters in the 8 MDC member towns overwhelmingly approved $800 million for Phase I

It is the largest sewer infrastructure improvement in the District’s history (State of Ct also)

Phase I began in 2007 with construction continuing until the end of 2012 encumbering the first $800 Million

Impacts on the Impacts on the Hartford System from Hartford System from Member TownsMember Towns

Bloomfield, West Hartford, Newington, portions of Windsor and portions of Wethersfield sewage flows thru Hartford

Member towns sewage system have excessive infiltration/inflow (I/I)

This I/I causes overflows

Adds to the combined sewer overflow volume and problems in Hartford

CSO Problem – Consent OrderCSO Problem – Consent Order

Based on model results, approximately: 1 billion gallons of annual CSO 38 CSO outfalls 50 rainfall events per year result in CSOs Bacteria levels > water quality standards

15 - 30 miles downstream of CSOs Target control level:

1 overflow event per typical year Elimination of overflows to Wethersfield Cove

and the North Branch of Park River

SSO Problem – Consent DecreeSSO Problem – Consent Decree

8 Structural SSOs in District 5 tributary to Hartford combined sewer

system Solutions include combination of I/I reduction,

relief sewers, storage & treatment at the HWPCF

10 year schedule for Newington and West Hartford SSOs

5 year schedule for Wethersfield, Rocky Hill and Windsor SSOs

Five Components of Clean Water ProjectFive Components of Clean Water Project

Inflow and InfiltrationInflow and Infiltration

Home inspections / Smoke testing / Flow measurement

Rehabilitating sewers and manholes throughout member towns

Lining sewer pipes will help reduce localized surcharges

Sewer Separation AreasSewer Separation Areas

6 Areas Project Wide

Separates Combined Sewers

InterceptorsInterceptors

The construction of larger

interceptor pipes to help convey

sewage to the treatment plant

The largest project in Phase I

was the installation of a mile-

long, five-foot diameter

interceptor pipe

Completed in 2011, it won the

2011 Public Works Project of the

Year for use of curved micro-

tunneling technology

Homestead Ave Interceptor Project, Hartford

TunneTunnells & Conduitss & Conduits

South & North Tunnel

South Tunnel is under design

Construction will begin 2014

Deep rock tunnel with 19 foot

diameter and 2.5 miles long

Hartford & Rocky Hill Water Pollution Control FacilitiesHartford & Rocky Hill Water Pollution Control Facilities

Hartford Water Pollution Control

Rocky Hill Water Pollution Control

Hartford WPC

$120 million of

construction contracted

to date

Wet Weather Expansion

Next Major Phase-

increases peak flow from

135 MGD to 200 MGD

Rocky Hill will be

expanded in Phase II of

CWP-increases peak flow

from 18 MGD to 27 MGD

Pollution Reduced in CT RiverPollution Reduced in CT River

Nitrogen levels have been reduced 2014 Limit = 2,377 lbs

Green ProjectsGreen Projects

Continuous review of project design for green incorporation

Rain Barrel Program Working with member

towns on rain barrel displays in each town

MDC Headquarters Green Demonstration Project Replace sidewalks with porous concrete Permeable concrete pavers Rain garden

MDC sponsored & Funded Green MDC sponsored & Funded Green Capitals ProjectsCapitals Projects$1.5 mil project reen Capitals Project$1.5 mil project reen Capitals Project

CWP FundingCWP Funding MDC has maximized grants and loans to

fund the $800 million needed for Phase I

Special Sewer Service Charge funds the bond and loan portion of the project

This charge is based on metered water consumption and is charged to District customer who have both water and sewer services

2013/2014 DEP Priority List

MDC earmarked for 49% or $357 million

Special Sewer Service Charge (SSSC)Special Sewer Service Charge (SSSC)Billed QuarterlyBilled Quarterly

Special Sewer Service Charge (SSSC)Special Sewer Service Charge (SSSC)

SSSC Monthly Estimate

based on 100 ccf/yr

2008 $0.35 / ccf $2.92… … …

2010 $1.05 / ccf $8.75

2011 $1.40 / ccf $11.67

2012 $1.90 / ccf $15.83… … …

2021 - 2038

$5.75 / ccf $47.92

… … …

2049 $0.25 / ccf $2.08

2050 $0.00 / ccf $0.00

Established in 2007 to fund the Clean Water Project

Projected to end in 2050

SummarySummary Project on time and within budget

We are fixing serious environmental and public health problems Significantly reduce pollution in local

waterways and Long Island Sound Prevent sewage backups in homes and

neighborhood streets

Maintain quality of life in the District by improving infrastructure

How You Can Stay InformedHow You Can Stay Informed

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