Tunnels – Page 35 – Southland Holdings

Mill Creek Interceptor – Contract 2

Mill Creek Interceptor – Contract 2 https://www.southlandholdings.com/wp-content/uploads/2025/09/Mill%20Creek%20Interceptor%20Contract%202_01.jpg 1000 751 Southland Holdings Southland Holdings https://www.southlandholdings.com/wp-content/uploads/2025/09/Mill%20Creek%20Interceptor%20Contract%202_01.jpg September 23, 2025 September 23, 2025

Completed in 2004 by Mole Constructors, the Mill Creek Interceptor Contract 2 consisted of the excavation of 13,200 linear feet of 23 ft 8-inch diameter tunnel for a sanitary…

McNutt Creek Wastewater Interceptor Project, Phase 1

McNutt Creek Wastewater Interceptor Project, Phase 1 https://www.southlandholdings.com/wp-content/uploads/Southland_Holdings_Stacked.png 1000 750 Southland Holdings Southland Holdings https://www.southlandholdings.com/wp-content/uploads/Southland_Holdings_Stacked.png September 23, 2025 September 23, 2025

Completed in 2007 by Mole Constructors, the McNutt Creek Wastewater Interceptor Project, Phase 1 project consisted of approximately 8,350 linear feet of 48-inch diameter wastewater line ranging from about 30…

Tuxedo – Improvement 230 Intercommunity Relief Sewer

Tuxedo – Improvement 230 Intercommunity Relief Sewer https://www.southlandholdings.com/wp-content/uploads/Southland_Holdings_Stacked.png 1000 750 Southland Holdings Southland Holdings https://www.southlandholdings.com/wp-content/uploads/Southland_Holdings_Stacked.png September 23, 2025 September 23, 2025

Completed in 2006 by Mole Constructors, the Tuxedo – Improvement 230 Intercommunity Relief Sewer project consisted of the excavation of 11,300 linear feet of 99-inch diameter tunnel for a sanitary…

Little Walnut/Buttermilk – South Tunnel

Little Walnut/Buttermilk – South Tunnel https://www.southlandholdings.com/wp-content/uploads/Southland_Holdings_Stacked.png 1000 750 Southland Holdings Southland Holdings https://www.southlandholdings.com/wp-content/uploads/Southland_Holdings_Stacked.png September 23, 2025 September 23, 2025

Completed in 2006 by Mole Constructors, the Little Walnut/Buttermilk South Tunnel project consisted of two shafts and a conveyance tunnel with a grouted in place fiberglass pipe permanent liner.…

Lee Road – Superior Road Intercommunity Relief Sewer – Contract 1

Lee Road – Superior Road Intercommunity Relief Sewer – Contract 1 https://www.southlandholdings.com/wp-content/uploads/2025/08/Lee%20Rd%20Superior%20Rd%20Relief%20Sewer%20Contract%201_01.jpg 1000 750 Southland Holdings Southland Holdings https://www.southlandholdings.com/wp-content/uploads/2025/08/Lee%20Rd%20Superior%20Rd%20Relief%20Sewer%20Contract%201_01.jpg September 23, 2025 September 23, 2025

Completed in 2005 by Mole Constructors, the Lee Road Superior Road Intercommunity Relief Sewer Contract 1 project consisted of the excavation of approximately 22,593 linear feet of 7…

Mill Creek Interceptor – Contract 3

Mill Creek Interceptor – Contract 3 https://www.southlandholdings.com/wp-content/uploads/2025/08/Mill%20Creek%20Interceptor%20Contract%203_01.jpg 1000 750 Southland Holdings Southland Holdings https://www.southlandholdings.com/wp-content/uploads/2025/08/Mill%20Creek%20Interceptor%20Contract%203_01.jpg September 23, 2025 September 23, 2025

Completed in 2006 by Mole Constructors, The Mill Creek Interceptor Contract 3 consisted of the excavation of 14,775 linear feet of 23 feet 8-inch diameter tunnel for a sanitary…

Big Walnut Sanitary Trunk Sewer Extension Part 6, Phase 1

Big Walnut Sanitary Trunk Sewer Extension Part 6, Phase 1 https://www.southlandholdings.com/wp-content/uploads/2025/08/Big%20Walnut%20Sanitary%20Trunk%20Sewer%20Part%201_01.PNG 1000 749 Southland Holdings Southland Holdings https://www.southlandholdings.com/wp-content/uploads/2025/08/Big%20Walnut%20Sanitary%20Trunk%20Sewer%20Part%201_01.PNG September 23, 2025 September 23, 2025

Completed in 2011 by Mole Constructors, the Big Walnut Sanitary Trunk Sewer Extension Part 6F1, Part 1 project involved the excavation of 15,000 linear feet of tunnel through shale for…

No Business Creek Tunnel and Tunnel Lift Station

No Business Creek Tunnel and Tunnel Lift Station https://www.southlandholdings.com/wp-content/uploads/2025/08/No%20Business%20Creek%20Tunnel%20and%20Tunnel%20Lift%20Station_01.jpg 1000 750 Southland Holdings Southland Holdings https://www.southlandholdings.com/wp-content/uploads/2025/08/No%20Business%20Creek%20Tunnel%20and%20Tunnel%20Lift%20Station_01.jpg September 23, 2025 September 23, 2025

Completed in 2010 by Mole Constructors, The No Business Creek Tunnel and Tunnel Lift Station project consisted of five shafts, approximately 16,000 linear feet of tunnel, a 10 MGD pump…

Riverbank Filtration Tunnel and Pump Station

Riverbank Filtration Tunnel and Pump Station https://www.southlandholdings.com/wp-content/uploads/2025/08/Riverbank%20Filtration%20Tunnel%20and%20Pump%20Station_01.jpg 1000 750 Southland Holdings Southland Holdings https://www.southlandholdings.com/wp-content/uploads/2025/08/Riverbank%20Filtration%20Tunnel%20and%20Pump%20Station_01.jpg September 23, 2025 September 23, 2025

Completed in 2011 by Mole Constructors, the Riverbank Filtration Tunnel and Pump Station project included a work shaft, 7,763 linear feet of 12-foot diameter tunnel for water conveyance, four collector…

Eastern and Delta Avenue Sewer Separation – Phase 1

Eastern and Delta Avenue Sewer Separation – Phase 1 https://www.southlandholdings.com/wp-content/uploads/2025/08/Eastern%20and%20Delta%20Ave%20Sewer%20Separation%20Phase%201_01.jpg 1000 750 Southland Holdings Southland Holdings https://www.southlandholdings.com/wp-content/uploads/2025/08/Eastern%20and%20Delta%20Ave%20Sewer%20Separation%20Phase%201_01.jpg September 23, 2025 September 23, 2025

Mole Constructors completed the excavation of 6,077 linear feet of tunnel using a Tunnel Boring Machine (TBM). They jacked 84-inch Reinforced Concrete Pipe (RCP) for a sanitary sewer and slip-lined…