Cleveland Public Library Photograph Collection
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Transcript of Cleveland Public Library Photograph Collection
Cleveland Public Library Photograph Collection
NEORSD• 62 Member Communities• 1 Million People• 370 Square Miles• Ave. Daily Flow – 310 Million Gallons• Combined Sewers - 35%• Separate Sanitary Sewers - 65%
Sewer Overflow
• Northwest Interceptor• Cuyahoga Valley Interceptor• Southwest Interceptor• Heights/Hilltop Interceptor• Mill Creek Tunnel
Five Major Interceptor Systems
SOUTHWEST INTERCEPTOR
CUYAHOGAVALLEYINTERCEPTOR
SERVICE AREA MAP
HEIGHTS/HILLTOPINTERCEPTOR
MILL CREEK TUNNEL
NORTHWESTINTERCEPTOR
SYSTEMCAPITAL COST$25
MILLION
$75 MILLIO
N$210
MILLION
$260 MILLIO
N$150
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
R i ver
M ill
Mill
W o lf
C reek Cree
k
C reek
HighlandHeights
M ap leHeights
C uyahogaHeights
N ew burghHeights
G arfieldHeights
B ed ford
Va lleyV iew
Indep endence
C leve land
N orthR anda ll
C alvaryC em etery
E. 93 St.
Martin Luther King Dr.
E. 131 St.
East Blvd.
P uritan Ave.
M cC raken R d .
L ibb y R d .
B roadway Ave.
Lee Rd.
Wa rr en sv ille C en te r R d.
N ort hfi eld R d.
E. 49th St.
E. 71st St.
Warner Rd.
G rang er R d .
C uyaho ga
C anal R d .
G rant A ve.
Turney R d .
G arfield B lvd .
B ro adway Ave.
JohnsonParkway
Tark ing to nAve.
M iles R d .
G arfieldP ark
R eservation
M TC - 1M TC - 2M TC - 3D ro p S haftM ill C reek In te rcep to r
" P r otecti ng Y our C l ea n W ater I nvestment "
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• 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 Machine
•Blasting•Work Hours•Spoil Handling &
Disposal
Key Construction Issues
BlastingKey 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
Perception
Placement of ChargesResults at Surface
Key Construction IssueBlasting
Blasting
RealityKey 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
Work HoursKey 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
• Volume of excavated material from MCT-2 70 feet high.
Spoil Handling & DisposalKey Construction Issue
Spoil Handling & DisposalKey Construction Issue
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 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
CSO
Vol
ume
Dis
char
ged
(Mill
ion
Gal
lons
)
$0
$100
$200
$300
$400
$500
$600
$700
$800
$900
CSO Volume Discharged Each Year
Cost
Pres
ent V
alue
Cos
t (M
illio
ns$)
4740 MG
Recommended Control Recommended Control PlansPlans
0
500
1000
1500
2000
2500
3000
3500
Southerly Westerly Easterly
Existing
RecommendedPlans
CSO 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
$1,700
CSO Volume DischargedEach YearCost
Pres
ent V
alue
Cos
t (M
illio
ns$)
4740 MG
3500 MG
$1680
CSO
Vol
ume
Disc
harg
ed(M
illio
n G
allo
ns)
Easterly Facilities Plan
• 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• 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