Projects

100 St. Paul, LLC

TerraFirma was selected by general contractor GE Johnson to install a groundwater control system and innovative groundwater collection and treatment system in Denver’s heavily travelled Cherry Creek business district of Denver.

Project Specifications The project required installation of a system of vacuum wellpoints directly adjacent to these areas: 10 wellpoints: dewatering sump pit at 58ft. depth; 10 wellpoints: sewage ejector pit and 800 gallon sand/oil separator at 54ft. depth; 8 wellpoints: elevator pit at 62ft. depth; 2 wellpoints: deep pier cap at 61ft. depth; 2 wellpoints: [...]


Denver Justice Center

Denver Justice Center Deepwell Dewatering

Terrafirma Earth Technologies, Ltd. partnered with Hensel Phelps Construction Company on the construction of the new Denver Justice Center and Detention Facility project. Terrafirma designed and installed a deepwell dewatering system to ensure the integrity of the soils for the new construction. Project Specifications The project consisted of the construction of the Denver Justice Center [...]


Bayport Terminal

Bayport Terminal Dewatering

TerraFirma Earth Technologies was contracted by Zachry Corporation to perform the dewatering of the Bayport Terminal 3 complex. Project Specifications The project consisted of the construction of a new terminal for the loading and offloading of containers from cargo ships in the Houston Ship Channel. The area to be dewatered was approximately 2100’ long, by [...]


Buckeye WWTP

Excavation at Buckeye WWTP

Terrafirma was contracted by Garney Construction to install the groundwater control system for the Buckeye WWTP Expansion project in Buckeye, AZ. Project Specifications The Phase I construction of the expansion of the Buckeye WWTP, located just south of Irwin Road in Buckeye, Arizona, consisted of the construction of Anoxic Basins, a Booster Pump Station, a [...]


Luminant Environmental Retrofit

Wellpoint Dewatering System Installation

  Terrafirma Earth Technologies was contracted by Fluor Enterprises to provide groundwater control services for their Environmental Retrofit Project at a powerplant in Rockdale, TX. Project Specification The project is located within the existing TXU Sandow Steam Electric Station in Rockdale,Milam County,Texas, and consists of retrofitting Unit No.4 with scrubbers and ancillary equipment to improve [...]


San Juan Chama Drinking Water Project

Dewatering the Rio Grande River

Project Specifications The Project consisted of funishing and installing approximately 100lf of 60” and 4000 lf of 54” hight pressure welded steel pipe with four 54” butterfly valves in two reinforced concrete vault structures with appurtenances. The project commenced on a bluff west of the Rio Grande river, across the river and extended across the [...]


Tempe Town Lake

Tempe Town Lake Well Reconditioning

TerraFirma Earth Technologies was contracted by PCL Construction, Inc. for recovery well improvements on Phase I of the Pier 202 development. Project Specifications This project consisted of the relocation\rehabilitation of recovery wells 6, 7, and 8. Well 7 remained in place for future use, while wells 6 and 8 were abandoned in place according to [...]