Presentation to the MWRA Wastewater Advisory Committee ... · MWRA Wastewater Advisory Committee FY2007 Accomplishments and Challenges for FY2008 September 7, 2007 Frederick A. Laskey

Massachusetts Water Resources AuthorityMassachusetts Water Resources Authority

Presentation to the

MWRA Wastewater Advisory Committee

FY2007 Accomplishments andChallenges for FY2008

September 7, 2007

Frederick A. LaskeyExecutive Director

2

Progress on Capital Programs

3

Projects Completed In FY2007 Eliminate 227 Million Gallons Of CSO Discharge A Year

South Dorchester Bayeliminated

30 million gallons20 discharges

Charles Riverreduced

44 million gallons20 discharges

Little Mystic Channelreduced

3.9 million gallons9 discharges

Inner Harborreduced

85 million gallons13 discharges

Fort Point Channelreduced

64 million gallons17 discharges

4

Stony Brook Sewer Separation

• Completed September 2006, on schedule

• Total cost: $45 million

• 99.7% reduction in discharges:

• Removed stormwater runoff from neighborhood and MWRA sewers by installing 74,000 feet of new storm drains serving 609 acres in Jamaica Plain, Mission Hill and Roxbury

Before After22 discharges 2 discharges44.5 million gallons 0.13 million gallons

5

South Dorchester Bay Sewer Separation

• Construction completed December 2006, ahead of schedule (CSO facilities to be closed after testing)

• Total cost: $118.2 million

• 100% reduction in discharges:

• Removed stormwater runoff from neighborhood and MWRA sewers by installing 136,000 feet of new storm drains serving 1,750 acres of Dorchester

Before After20 discharges Eliminated30 million gallons Eliminated

6

CSO BOS019 Storage Conduit, Little Mystic River Channel

• Completed March 2007, on schedule

• Total cost: $14.2 million

• 86% reduction in discharges:

• Construction of new facility to provide 670,000 gallons of off-line storage in double barrel 10’x17’ conduits installed between Chelsea Street and Mystic Tobin Bridge, Charlestown

Before After13 discharges 2 discharges4.4 million gallons 0.6 million gallons

7

Fort Point Channel Sewer Separation

• Completed March 2007, on schedule

• Total cost: $7.7 million

• 100% reduction in discharges:

• Removed stormwater runoff from neighborhood and MWRA sewers by installing 4,550 feet of new storm drains serving 55 acres in the Fort Point Channel area

Before After9 discharges 03.0 million gallons 0

8

Union Park Detention/Treatment Facility

• Partial acceptance December 2006, will be completed April 2007

• Total cost: $49.5 million

• 45.9% reduction in discharges:

• Construction of new facility, adjacent to existing BWSC pump station, to provide 2.2 million gallons of storage and treatment of remaining discharge

Before After25 discharges 17 discharges132.0 million gallons 71.4 million gallonsuntreated treated

9

Prison Point CSO Facility Optimization

• Completed March 2007, on schedule

• Total cost: $50,000

• 25.4% reduction in discharges:

• Minimizes treated CSO discharges to the Inner Harbor by optimizing the operation of existing facility gates and pumps to maximize in-system storage and convey more flow to Deer Island

Before After30 discharges 17 discharges335 million gallons 250 million gallonstreated treated

10

Construction Continued On Braintree-Weymouth Replacement Pump Station

11

Construction Is Nearly Complete On The Upper Neponset Valley Relief Sewer

12

Construction Has Begun On The South Boston CSO Tunnel

13

The Tunnel Boring Machine Arrived From Japan Wednesday

14

The TBM “Launch” Is Scheduled For Next Wednesday

15

• $160 million grant/loan funds to local projects in 43 communities:

– 900 miles sewer TV inspected

– 30 miles sewer replaced

– 120 miles sewer repaired

– 8,000 sewer manholes repaired

– 600 catch basins disconnected

– 5,000 downspouts disconnected

MWRA I/I Community Financial Assistance Program

16

Neponset River Watershed

17

I/I Community Financial Assistance Program:Neponset River Watershed Communities

• $12.3 million MWRA grant/loan funds expended in 7 communities (Canton, Dedham, Milton, Norwood, Stoughton, Walpole, Westwood):

– 180 miles sewer TV inspected

– 8 miles sewer replaced

– 12 miles sewer repaired

– 725 sewer manholes repaired

18

0

200

400

600

800

1000

1/1/2007 1/31/2007 3/2/2007 4/1/2007 5/1/2007 5/31/2007 6/30/2007 7/30/2007 8/29/2007

mgd

Neponset River Flow Mother Brook Flow New Neponset Sewer Flow MWRA Water to New Neponset Sewer Communities

Neponset Basin Flow Comparison - 2007

19

Operations and Maintenance

20

Staffing

1,537

1,378

1,640

1,7681,757

1,713

1,671

1,314

1,2711,263 1,255

1,241

1,200

1,300

1,400

1,500

1,600

1,700

1,800

FY97 FY98 FY99 FY00 FY01 FY02 FY03 FY04 FY05 FY06 FY07 1-Jul-07

21

Wastewater System Maintenance

Pipeline Inspections

05

10152025303540

J A S O N D J F M A M J

Mile

s

Monthly Inspections

Pipeline Cleaning

05

10152025303540

J A S O N D J F M A M J

Mile

s

Hydraulic Cleaning Mechanical Cleaning

YTD Actual

Target = 3 miles monthly or 36 miles / 15% of the system annually

22

Deer Island Maintenance

Predictive Maintenance

0%2%4%6%8%

10%12%14%

FY98

FY99

FY00

FY01

FY02

FY03

FY04

FY05

FY06

FY07

% o

f PdM

Wor

k O

rder

s

FY07 DITP Target

Preventive Maintenance

0

10

20

30

40

50

60

70

80

90

100

FY98

FY99

FY00

FY01

FY02

FY03

FY04

FY05

FY06

FY07

% o

f Wor

k O

rder

s C

ompl

eted

Industry Benchmark = 90%Best in Class Target = 100%

Preventive Maintenance Predictive Maintenance

23

Deer Island Energy

Self-Generation

0123456789

10

J A S O N D J F M A M J

Pow

er G

ener

atio

n, M

W

STG, MW CTG, MWHydro, MW On-site Generation Target

• Deer Island’s annual electricity budget is nearly $14 million

• Self-generation target for FY2008 is 23%

MA Renewable Portfolio Standard

$0$50,000

$100,000$150,000$200,000$250,000$300,000$350,000$400,000

J A S O N D J F M A M JB

id P

rice

$0$200,000$400,000$600,000$800,000$1,000,000$1,200,000$1,400,000$1,600,000

Cum

ulative Savings

RPS Bid Price Cumulative Bid Price

24

Renewable Energy And Sustainability

• Fleet optimization– 23 Hybrid– 15 CNG– 6 Propane– 18 Ethanol– 188 Biodiesel– Retrofit 65 large diesel-powered

units with catalytic converters

• Replaced 500 computer monitors with energy-star rated LCDs

25

Renewable Energy And Sustainability

• Awarded $870,000 in grants and no-interest loans for solar panels at Deer Island

• Recently submitted grant applications for:– Nut Island Wind - design & construction– IPS Wind - design & construction– Carroll Solar - design & construction– Norumbega Wind - feasibility study– Loring Road Hydro - feasibility study

• Cosgrove and Oakdale hydroelectric facilities generated almost $1 million in FY2007

26

200

225

250

275

300

325

350

1986

1987

1988

1989

1990

1991

1992

1993

1994

1995

1996

1997

1998

1999

2000

2001

2002

2003

2004

2005

2006

Dem

and

(mgd

)Water Demand Continues To Decrease

27

Wastewater Challenges Ahead

28

Complete The CSO Control Program

Completed

Hydraulic Relief at CAM005

Hydraulic Relief at BOS017

Chelsea Trunk Sewer Replacement

Chelsea Branch Sewer Relief

CHE008 Floatables Control and Outfall Repair

Cottage Farm CSO Facility Upgrade

Prison Point CSO Facility Upgrade

Somerville Marginal CSO Facility Upgrade In Construction

Commercial Point CSO Facility Upgrade Cambridge/Alewife Brook Sewer Separation In Design/Planning

Fox Point CSO Facility Upgrade South Dorchester Bay Sewer Separation North Dorchester Bay Facilities

MWRA Floatables/Outfall Closing Projects Regionwide Floatables Control Morrissey Boulevard Storm Drain

Neponset River Sewer Separation Union Park Treatment Facility Reserved Channel Sewer Separation

Constitution Beach Sewer Separation East Boston Branch Sewer Relief (contract 1)

East Boston Branch Sewer Relief (except Contract 1)

Somerville Baffle Manhole Separation Fort Point Channel Sewer Separation & Optimization Bulfinch Triangle Sewer Separation

Pleasure Bay Storm Drain Improvements Charlestown BOS019 Storage Conduit Brookline Sewer Separation

Stony Brook Sewer Separation North Dorchester Bay Storage Tunnel Cottage Farm Improvements

29

Deer Island Treatment Plant Asset Protection

• Repairs and modifications of facilities and structures; equipment upgrades and replacements

– FY08: $15.8 million– FY09-FY13: $128.1 million

30

Electrical Equipment Upgrades

Failed Bus Duct

31

Primary And Secondary Clarifier Rehabilitation

Scum Tip Tube Replacement

32

Sludge Pump Replacements

33

Seawall And Public Access

34

Digester Storage Tank Membrane Replacements

35

Primary Operations Thermal Operations

Process Instrumentation Control System (PICS) Upgrade

36

Centrifuge Replacement

37

Rehabilitation Of Remote Headworks

• Chelsea Creek 1967• Columbus Park 1967• Ward Street 1967• Nut Island 1998

3 older Headworks remain operational, but are in only fair condition. Significant Investment is required now.

Nut Island Headworks is relatively new and in very good condition

38

Headworks Screens

39

Headworks Equipment

Odor Control Media

Knife Valve

40

Rehabililation Of Collection System Sewers

• 227 Miles of Gravity Sewers

• 30 Miles of Force Mains, Siphons and Outfalls

• 4,000 Manholes and Structures

41

Rehabilitation Of West Roxbury Tunnel

• Constructed 1963• 2.5 mile long tunnel, Inspected 1999• Access shafts at ends and mid-point• Hydrogen Sulfide Corrosion

42

Rehabilitation Of Section 624, North Weymouth

• Constructed 1933• 2,000 ft - Located Beneath Rte 3A in

North Weymouth• 5 ft Diameter• Hydrogen Sulfide Corrosion

43

Rehabiliation Of Siphon Headhouse Chambers

44

Pipe Ratings

'A' RATED PIPE52 MI, 23%

'B' RATED PIPE139 MI, 61%

'C' RATED PIPE18 MI, 8%

UNRATED GRAVITY PIPE

18 MI, 8%

45

“C” Rated Pipe

46

“C” Rated Pipe Critical Factors – Age and Material

DUCTILE IRON (DI)

0.84%

CAST IRON (CI)7.40%

BRICK (BR)54.39%REINFORCED

CONCRETE (RC)12.03%

POURED IN PLACE

CONCRETE (PIP)9.20%

VITRIFIED CLAY (VC)

16.08%

AKRON (VTC)0.06%

By Material

By Age

1-25 YRS1% 26-50 YRS

10%

51-75 YRS10%

101-125 YRS65%

76-100 YRS14%

47

Residuals Processing Facility

• The sludge-to-fertilizer plant in Quincy is currently operated under contract with NEFCo

• The contract will expire in 2015

• The facility will either have to be completely rehabilitated or replaced in-kind or with another technology

48

Rates Management

49

$0 $200 $400 $600 $800 $1,000 $1,200

Indianapolis

Philadelphia

Houston

New Orleans

Washington DC

San Francisco

MWRA Service Area

$361

$143

$307

$262

$447

$384

$337

1985

Combined Water And Sewer Rate Growth Comparison Among US Cities: 1985 to 2006

From the Advisory Board’s 2006 Annual Water and Sewer Retail Rate Survey

$386

$570

$542

$542

$536

$505

$330

1994

$439

$706

$624

$698

$695

$971

$1,006

2006

50

The Biggest Driver Of MWRA Rate Increases Is Debt Service

Debt ServiceOperating Expenses

FY1990

36%

64%

FY2007

60%

40%

FY2016

62%

38%

FY1990

36%

64%

FY2007

60%40%

FY2016

62%

38%

51

Outstanding Callable and Non-callable Principal

$-

$50,000,000

$100,000,000

$150,000,000

$200,000,000

$250,000,000

$300,000,000

$350,000,000

$400,000,000

$450,000,000

20072008200920102011201220132014201520162017201820192020202120222023202420252026202720282029203020312032203320342035203620372038203920402041204220432044204520462047204820492050

Par

Interest Before RestructuringPrincipal Before Restructuring2007B Non-callable Principal

2007 Restructuring

After Restructuring

52

$-

$200

$400

$600

$800

$1,000

$1,200

FY20

07

FY20

08

FY20

09

FY20

10

FY20

11

FY20

12

FY20

13

FY20

14

FY20

15

FY20

16

FY20

17

FY20

18

FY20

19

FY20

20

FY20

21

FY20

22

FY20

23

FY20

24

FY20

25

FY20

26

FY20

27

FY20

28

($ in

Mill

ions

)

Capital Finance Expenses Note: Assumes the receipt of $11,250 in DSA Annually

$495$527

$557 $588 $621$655

$692$731

$767$788

$855$823

$886

$977 $989 $984 $985 $987$1,027 $1,026 $1,029

$1,003

Projected Rate Revenue Requirement

• Over the next 10 years (FY07-FY17), the rate revenue requirement grows by 73% or $360 million

53

Capital Improvement Spending And Debt Service

$0

$100

$200

$300

$400

$500

$600

$700

FY86

FY88

FY90

FY92

FY94

FY96

FY98

FY00

FY02

FY04

FY06

FY08

FY10

FY12

FY14

FY16

FY18

FY20

FY22

FY24

FY26

FY28

FY30

FY32

FY34

FY36

FY38

FY40

FY42

FY44

FY46

FY48

FY50

FY52

FY54

($ in

Milli

ons)

Debt Service CIP - Actual CIP - Proposed

54

$20.0

$27.0

$32.0

$39.3 $40.7$44.0

$48.1 $49.4$52.9

$4.1

$8.7 $9.6

$18.9

$0

$10

$20

$30

$40

$50

$60

FY94 FY95 FY96 FY97 FY98 FY99 FY00 FY01 FY02 FY03 FY04 FY05 FY06 FY07 FY08

(Milli

ons)

DSA Cut

Debt Service Assistance

$17.25

55

Debt Service Assistance Must Continue

• The Commonwealth’s budget included $23 million for state-wide debt service assistance – of which MWRA’s share is estimated to be $17.25 million

• The FY08 rate increase was 4.5%

• The problem looms for the foreseeable future

Fiscal Year FY08 FY09 FY10 FY11 FY12 FY13Rate Revenue Requirement (in millions) 517.8 547.9 579.4 612.8 648.1 685.5

Rate Revenue Increase 4.5% 5.8% 5.8% 5.8% 5.8% 5.8%

Estimated Household Bill

Based on water usage of 61,000 gallons per year $695 $734 $773 $814 $862 $910

Based on water usage of 90,000 gallons per year $1,025 $1,093 $1,141 $1,202 $1,272 $1,343

56

Look For Deer Island On The History ChannelSeptember 20th