presented by neorsd richard j. switalski, p.e. presented by neorsd richard j. switalski, p.e
TRANSCRIPT
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%
• 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
.
Wa rr e ns v i lle C
en t er Rd
.
No r th fi eld
Rd
.
E. 49th S
t.
E. 71st S
t.
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
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
• 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
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
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
CS
O V
olu
me
Dis
ch
arg
ed
(Mil
lio
n G
all
on
s)
$0
$100
$200
$300
$400
$500
$600
$700
$800
$900
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
1000
1500
2000
2500
3000
3500
Southerly Westerly Easterly
Existing
RecommendedPlans
CSO Reduction by CSO Reduction by 20192019CSO Reduction by CSO Reduction by 20192019
$847.7
0
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
-$100
$100
$300
$500
$700
$900
$1,100
$1,300
$1,500
$1,700
CSO Volume DischargedEach Year
Cost
Pre
sen
t V
alu
e C
ost
(Millio
ns$)
4740 MG
3500 MG
$1680
CS
O V
olu
me D
isch
arg
ed
(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
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