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Cleveland Public Library Photograph Collection
NEORSD
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62 Member Communities
1 Million People
370 Square Miles
Ave. Daily Flow – 310 Million Gallons
Combined Sewers - 35%
Separate Sanitary Sewers - 65%
Sewer Overflow
Five Major Interceptor
Systems
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Northwest Interceptor
Cuyahoga Valley Interceptor
Southwest Interceptor
Heights/Hilltop Interceptor
Mill Creek Tunnel
SERVICE AREA MAP
SYSTEM
CAPITAL COST
NORTHWEST
$25
INTERCEPTORMILLION
CUYAHOGA
VALLEY
$75
INTERCEPTORMILLION
SOUTHWEST
$210
INTERCEPTORMILLION
$260
HEIGHTS/HILLTOP
MILLIO
INTERCEPTOR
N
MILL CREEK
$150
TUNNEL
MILLION
Mill Creek Tunnel
Overview
• Recommended in 1997 Facilities Plan
• To be built under three contracts, MCT-1,
2, and 3
• 43,000 feet; 20 ft. Diameter; Depths up to
300 ft.
• Estimated Construction Cost = $150
Million
Grant Ave.
E. 49th St.
Ga
rfie
ld
.
.
North
Randall
McCraken Rd.
Maple
Heights
Libby Rd.
Br
oa
dw
ay
Av
e.
Bedford
Independence
r
yahog a Ri ve
Cu
Valley
View
Rd.
Center Rd.
Granger Rd.
Northfield
f
Warrensville
W
ol
k
Cree
Garfield
Heights
Mile
s Rd
Tarkington
Ave.
Garfield
Park
Reservation
d.
yR
rn e
Tu
Warner Rd.
E. 71st St.
Canal Rd .
Blv
d
E. 131 St.
Calvary
Cemetery
Cr
ee
k
East Blvd.
Cuyahoga
Heights
M
ill
Johnson
Parkway
Puritan Ave.
Mill Creek
Newburgh
Heights
Highland
Heights
Lee Rd.
Av
e.
MTC - 1
MTC - 2
MTC - 3
Drop Shaft
Mill Creek Interceptor
Cleveland
Martin Luther King Dr.
E. 93 St.
Br
oa
dw
ay
Impacts of the Mill Creek
Watershed Program
• Provide over 70 million gallons of storage in
new tunnel
• Eliminate 13 overflows entirely (27 now
exist)
• Reduce annual overflow from over 500
million gallons to 14 million gallons
• No remaining overflows should activate
more than an average of 5 times per year
Large Tunnel
Construction
TBM
Tunnel Boring Machine
• Diameter – 23’ 8”
• Length – 60’ / 200’ with
trailing Gear
• Weight – 700 tons
• Production – 55’ / day /
8’ per hour
• Spoils – 17 cubic ft. per
linear foot
• Cost - $10-15 million
Key Construction
Issues
• Blasting
• Work Hours
• Spoil Handling &
Disposal
Key Construction Issue
Blasting
• Peak particle velocity held to less than
0.5 in/sec at nearest structures
• Air-overburden Pressure Shall not
Exceed 133 Decibels
• Pre-Blast Survey
Key Construction Issue
Blasting
Results at Surface
Perception
Placement of Charges
Key Construction Issue
Blasting
Reality
Key Construction Issue
Work Hours
• Key concern to prospective bidders
• Affects ability to construct shafts,
mine tunnel, and remove spoils
• One shift operation will add 1+ years
and $5 million to the project
Key Construction Issue
Spoil Handling & Disposal
• Who owns the tunnel spoils?
• 24’ diameter TBM produces 1400
cu.ft. of spoil material during 2/8 hour
shifts.
• 140 trucks per day
• 12 trucks per hour
• 1 truck every 5 minutes
Key Construction Issue
Spoil Handling & Disposal
• Volume of excavated
material from MCT-2 70
feet high.
Key Construction Issue
Spoil Handling & Disposal
Public Participation
• Inform local officials of the project
during the design process
• Keep local officials informed during
design & discuss issues that impact the
local community
• Convene public meetings prior to the
commencement of construction
CSO Reduction to Present
$900
10000
$847.7
9000
$800
7000
6270 MG
$600
$572.3
6000
CSO Volume Discharged Each Year
$500
Cost
5000
4740 MG
$400
4000
$300
$296.1
3000
$200
2000
$140.1
$100
1000
$44.6
$0
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7
2
7
2
7
2
7
2
7
2
7
2
7
197
198
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199
199
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200
201
201
202
202
203
203
0
Present Value Cost (Millions$)
$700
197
CSO Volume Discharged
(Million Gallons)
8000
Recommended Control
Plans
3500
Existing
3000
Recommended
Plans
2500
2000
1500
1000
500
0
Southerly
Westerly
Easterly
CSO Reduction by 2019
$1,700
10000
$1680
9000
$1,300
7000
$1,100
6000
5000
CSO Volume Discharged
Each Year
$847.7
Cost
4740 MG
$900
4000
$700
3500 MG
$500
3000
$300
2000
$100
1000
-$100
2
7
2
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2
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2
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2
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197
198
198
199
199
200
200
201
201
202
202
203
203
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197
CSO Volume Discharged
(Million Gallons)
8000
Present Value Cost (Millions$)
$1,500
Easterly Facilities Plan
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88,300 of 18’-24’ tunnels
27 shafts
160 MGD pump station
Total estimated projected
cost - $1.3 billion
Easterly CSO Storage Tunnel
Impacts of Proposed
Easterly Projects
• Provide 152 million gallons of storage in new tunnel
• Eliminate 78 high-maintenance regulators reducing
the potential for dry weather discharges
• Reduce annual overflow from 2,560 million gallons to
about 450 million gallons
• No remaining overflows should activate more than an
average of 4 times per year
Funding
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Water Pollution Control Loan Fund (WPCLF)
Administered by Ohio EPA
Low Interest Loan Program
Standard Construction Loan – 20 year based
on 1.25% discount below the current GO bond
– currently 3.78%
• NEORSD has received 33 loans representing
$387 million
• WPCLF has financed 53% of District jobs since
1991
a gift of clean water