Methodology
MERSINO provided dewatering consisting of a two-tiered drilled well system installed within the massive, enclosed footprint of a slurry wall. This system consisted of a total of 65 wells; 37 were located near the top of the excavation banks and 28 were located at the benched grade mid-way down the excavation slope. The wells varied in depths from 100 feet up to 150 feet. Each well was fitted with an electric submersible pump up to 40 HP in size, complete with individual control panels. The discharge from each well was connected to common discharge header pipes of varying sizes (ranging from 12 inch diameter to 24 inch diameter) that were placed in a ring around the excavation, approximately 7,000 feet long, with a designed system flow capacity of up to 78,000 GPM.
Drilling of the dewatering wells required the utilization of our CasaGrande Model B180 HD track-mounted drill rig with the capability of drilling into the site soil types including clay, silt, sand, gravel and the occasional cobbles and boulders. MERSINO designed, installed, and maintained the dewatering system throughout its operation.
Project Contact:
Shane Steele
513-265-4836
Project Value:
$7.5 million
