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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
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