Cleveland Open Library Photo Accumulation.


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Blvd. Day by day Flow 310 Million Gallons. Consolidated Sewers - 35% Separate ... Allay separate sterile sewer floods. Lessen streams to the joined sewer. Decrease ...
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Cleveland Public Library Photograph Collection

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

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Sewer Overflow

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Five Major Interceptor Systems Northwest Interceptor Cuyahoga Valley Interceptor Southwest Interceptor Heights/Hilltop Interceptor Mill Creek Tunnel

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SYSTEM CAPITAL COST NORTHWEST INTERCEPTOR $25 MILLION SERVICE AREA MAP CUYAHOGA VALLEY INTERCEPTOR $75 MILLION SOUTHWEST INTERCEPTOR $210 MILLION $260 MILLION HEIGHTS/HILLTOP INTERCEPTOR MILL CREEK TUNNEL $150 MILLION

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Mill Creek Tunnel Overview Recommended in 1997 Facilities Plan To be worked under three contracts, MCT-1, 2, and 3 43,000 feet; 20 ft. Breadth; Depths up to 300 ft. Evaluated Construction Cost = $150 Million

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Impacts of the Mill Creek Watershed Program Provide more than 70 million gallons of capacity in new passage Eliminate 13 floods completely (27 now exist) Reduce yearly flood from more than 500 million gallons to 14 million gallons No residual floods ought to initiate more than a normal of 5 times each year

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Large Tunnel Construction

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TBM Tunnel Boring Machine Diameter – 23\' 8" Length – 60\'/200\' with trailing Gear Weight – 700 tons Production – 55\'/day/8\' every hour Spoils – 17 cubic ft. per direct foot Cost - $10-15 million

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Key Construction Issues Blasting Work Hours Spoil Handling & Disposal

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Key Construction Issue Peak molecule speed held to under 0.5 in/sec at closest structures Air-overburden Pressure Shall not Exceed 133 Decibels Pre-Blast Survey Blasting

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Key Construction Issue Blasting Placement of Charges Results at Surface Perception

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Key Construction Issue Blasting Reality

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Key Construction Issue Work Hours Key worry to planned bidders Affects capacity to build shafts, mine passage, and expel ruins One movement operation will include 1+ years and $5 million to the venture

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Key Construction Issue Who possesses the passage ruins? 24\' measurement TBM produces 1400 cu.ft. of ruin material amid 2/8 hour shifts. 140 trucks for each day 12 trucks for every hour 1 truck like clockwork Spoil Handling & Disposal

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Key Construction Issue Spoil Handling & Disposal Volume of uncovered material from MCT-2 70 feet high.

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Key Construction Issue Spoil Handling & Disposal

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Public Participation Inform neighborhood authorities of the task amid the configuration procedure Keep nearby authorities educated amid outline & talk about issues that effect the nearby group Convene open gatherings before the beginning of development

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CSO Reduction to Present

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Recommended Control Plans

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CSO Reduction by 2019

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Easterly Facilities Plan 88,300 of 18\'- 24\' burrows 27 shafts 160 MGD pump station Total assessed anticipated expense - $1.3 billion

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Easterly CSO Storage Tunnel

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Impacts of Proposed Easterly Projects Provide 152 million gallons of capacity in new passage Eliminate 78 high-upkeep controllers decreasing the potential for dry climate releases Reduce yearly flood from 2,560 million gallons to around 450 million gallons No outstanding floods ought to initiate more than a normal of 4 times each year

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Funding Water Pollution Control Loan Fund (WPCLF) Administered by Ohio EPA Low Interest Loan Program Standard Construction Loan – 20 year in light of 1.25% markdown beneath the ebb and flow GO security – right now 3.78% NEORSD has gotten 33 advances speaking to $387 million WPCLF has financed 53% of District occupations since 1991

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an endowment of clean water

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