Cleveland Public Library Photograph Collection

NEORSDNEORSD• 62 Member Communities• 1 Million People• 370 Square Miles• Ave. Daily Flow – 310 Million Gallons• Combined Sewers - 35%• Separate Sanitary Sewers - 65%

• 62 Member Communities• 1 Million People• 370 Square Miles• Ave. Daily Flow – 310 Million Gallons• Combined Sewers - 35%• Separate Sanitary Sewers - 65%

Sewer OverflowSewer Overflow

• Northwest Interceptor• Cuyahoga Valley Interceptor• Southwest Interceptor• Heights/Hilltop Interceptor• Mill Creek Tunnel

• Northwest Interceptor• Cuyahoga Valley Interceptor• Southwest Interceptor• Heights/Hilltop Interceptor• Mill Creek Tunnel

Five Major Interceptor SystemsFive Major Interceptor Systems

SOUTHWEST INTERCEPTOR

CUYAHOGAVALLEYINTERCEPTOR

SERVICE AREA MAP

HEIGHTS/HILLTOPINTERCEPTOR

MILL CREEK TUNNEL

NORTHWESTINTERCEPTOR

SYSTEMCAPITAL COST

$25 MILLIO

N

$75 MILLIO

N$210

MILLION

$260 MILLIO

N

$150 MILLION

Mill Creek Tunnel OverviewMill 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

• 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

River

M ill

Mill

Wo lf

C reek Cre

ek

Creek

HighlandHeights

M ap leHeights

C uyahogaHeights

N ew burghHeights

G arfieldHeights

B edford

Va lleyV iew

Independenc e

C leve land

N orthR anda ll

C alvaryC em etery

E. 93 S

t.

Martin Luther K

ing D

r.

E. 131 S

t.

East B

lvd.

P uritan Ave.

M cC raken R d .

L ib by R d .

B roadway Ave.

Lee Rd

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Wa rr e ns v i lle C

en t er Rd

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No r th fi eld

Rd

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E. 49th S

t.

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Warner R

d.

G ranger R d .

Cuyaho g

a

C anal R d .

G rant Ave.

Turney R d .

G arfie ld B lvd .

B ro adway Ave.

JohnsonP

arkway

Tarking to nAve.

M iles R d .

G arfieldP ark

R eservatio n

M TC - 1M TC - 2M TC - 3D ro p S haftM ill C reek Intercep to r

" P r otecti ng Y our C l ean W ater I nvestment "

Impacts of the Mill Creek Watershed ProgramImpacts 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

• 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 ConstructionLarge Tunnel Construction

TBMTBM

• 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

• 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

Tunnel Boring MachineTunnel Boring Machine

•Blasting•Work Hours•Spoil Handling &

Disposal

•Blasting•Work Hours•Spoil Handling &

Disposal

Key Construction IssuesKey Construction Issues

BlastingBlastingKey Construction IssueKey Construction Issue

• 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

• 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

Perception

Placement of ChargesPlacement of ChargesResults at SurfaceResults at Surface

Key Construction IssueKey Construction IssueBlastingBlasting

BlastingBlasting

Reality

Key Construction IssueKey Construction Issue

• 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 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

Work HoursWork HoursKey Construction IssueKey Construction Issue

Spoil Handling & DisposalSpoil 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

• 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 IssueKey Construction Issue

• Volume of excavated material from MCT-2 70 feet high.

• Volume of excavated material from MCT-2 70 feet high.

Spoil Handling & DisposalSpoil Handling & DisposalKey Construction IssueKey Construction Issue

Spoil Handling & DisposalSpoil Handling & DisposalKey Construction IssueKey Construction Issue

Public ParticipationPublic 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

• 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 CSO Reduction to PresentPresentCSO Reduction to CSO Reduction to PresentPresent

6270 MG

$44.6

$140.1

$296.1

$572.3

$296.1

$140.1

$44.6

$847.7

0

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CS

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ch

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on

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$0

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CSO Volume Discharged Each Year

Cost

Pre

se

nt

Va

lue

Co

st

(Mil

lio

ns

$)

4740 MG

Recommended Control Recommended Control PlansPlansRecommended Control Recommended Control PlansPlans

0

500

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Southerly Westerly Easterly

Existing

RecommendedPlans

CSO Reduction by CSO Reduction by 20192019CSO Reduction by CSO Reduction by 20192019

$847.7

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-$100

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$1,100

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$1,700

CSO Volume DischargedEach Year

Cost

Pre

sen

t V

alu

e C

ost

(Millio

ns$)

4740 MG

3500 MG

$1680

CS

O V

olu

me D

isch

arg

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(Millio

n G

allo

ns)

Easterly Facilities PlanEasterly Facilities Plan

• 88,300 of 18’-24’ tunnels• 27 shafts• 160 MGD pump station• Total estimated projected

cost - $1.3 billion

• 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 ProjectsImpacts 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

• 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

FundingFunding• 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

• 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 watera gift of clean water