Ohio 13 June 29, 2019

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Crews Near Halfway Point in Storage Tunnel Project By Irwin Rapoport CEG CORRESPONDENT

Part of the Northeast Ohio Regional Sewer District’s (NEORSD) Project Clean Lake, the $142.3 million Doan Valley Storage Tunnel project (DVT) has McNally/Kiewit DVT JV (McNally Tunneling Corp. and Kiewet Corporation) constructing three tunnels to help deal with combined sewer overflows (CSO) and have it treated. “Our program is geared toward meeting Clean Water Act standards and addressing water-quality issues,” said the project web page. “The DVT system will help control overflows at 11 locations along Doan Brook, from Shaker Heights to Lake Erie. This control will contribute to Project Clean Lake’s overall goal: capturing 98 percent of all combined sewer flows for treatment.” Construction began in July 2017 and will be completed in early 2022. The crews are boring three tunnels - nearly 4 mi. of rock tunnel under the city of Cleveland: the 10,000-ft. long (18-ft. diameter) DVT, the 3,000-ft. (8.5-ft. diameter) Martin Luther King Conveyance Tunnel (MLK), and the 6,300-ft. (8.5-ft. diameter) Woodhill Conveyance Tunnel (WCT). The DVT’s main surface-level construction sites are near Superior Avenue and East 115th Street; Ambler Park, Woodhill and Baldwin roads; the intersection of Chester and Euclid avenues Stokes Boulevard; and close to the

McNally/Kiewit DVT JV Photo

The site is located in the Amber Park area and serious coordination and drawings were required early on.

Cleveland School of the Arts near the intersection of Carnegie Avenue, Martin Luther King, Jr. Boulevard. and Stearns Road. “The project will reduce CSO by 365 million gallons annually, and decrease flooding during rain events,” said Jennifer Elting, NEORSD’s senior public information officer. This project is part of a 25-year program to control the amount of raw sewage discharged into area waterways, including the Cuyahoga NEORSD Photo The large 20.75-ft. Herrenknecht AG was manufactured and assem- River and Lake Erie, during heavy rains. PCL bled in Germany and shipped the Port of Cleveland via the Atlantic will reduce combined sewer overflow (CSO) Ocean and the Great Lake, with the disassembled parts shipped by from 4.5 billion gallons to 500 million gallons by 2036.” truck to the work site.

The NEORSD is completely ratepayer-funded, and the financing for the project may be state loan fund, one that will be repaid by the utility. The DVT is one part of a federallymandated consent decree. Project Clean Lake is a Sewer District program geared toward meeting Clean Water Act standards and addressing water-quality issues. McMillen Jacobs Associates is the design engineer for the project, and is partnering with Trim. “The tunnels are expected to last generations as maintenance is a huge part of our work,” said Elting. “We spend $50 million annually on maintenance alone. We have interceptor sewers that are more than 100 years old still in operation. We sometimes have to relocate utilities, but those are see PROJECT page 2


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