LaSalle Canal MGP Sediment RemedIATION

Bluff City Materials, Inc. (BCM), D Construction (D) and White Lake Dock and Dredge, Inc. (WLDD) are currently executing the largest In-Situ Stabilization of MGP Impacted Sediments in a water body.  The team was contracted by Ameren Energy Services, Inc. in the Fall of 2018.   The key elements of the project include: Canal sediment dredging, Sheet pile installation, In-situ sediment stabilization, force main replacement, upland site soils and sediment management, water treatment and site restoration.  The key elements of the project include:

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• Dredging – 77,000 cubic yards of MGP impacted sediment

• In-situ Stabilization – 70,000 cubic yards of MGP impacted sediment to a depth of 25 feet

• Sheet Pile Installation – Coffer Dam 13,640 SF 325 (LF); Canal Access Pier 92,012 SF (180 LF)

• Off-site Transportation and Disposal – 172,000 tons

• Sediment staging area/dewatering cell operation – 174,500 tons

• Forcemain installation – 52’ diameter, 50-foot depth, 450 FT length.
   

The project team was responsible for completing a 100% design for the project.  This included core sampling, stabilization treatability study, full-scale pilot demonstration and final design drawings.  Several new innovative technologies have been employed to execute the LaSalle project.  These included the following:

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• Delmag RH 30 and RH 34 drill rigs with operator activated grout feed and real time process monitors.

• Scheltzke 1030 automated batch plants, diesel powered with piston grout pumps.