United Harvest/TEMCO Kalama Facility Modernization Marine Structures
Client Name: CHS LLC, United Harvest Terminal
Location: Kalama, WA
Contract Dollar Amount: $18,122,972.00
This complex, multi-year project consisted of multiple contracts, project milestones and phases with numerous change orders due to the ever-changing site conditions, on-site engineering and coordination issues with upland projects that impacted the completion of the various phases of the marine related work items.
The project included the installation of ship mooring dolphins and fendering systems into the existing ship mooring dock prior to demolition of the existing structures, construction of shipping facility platforms, trestles and dolphins, and construction of barge unloading platform, trestles, and dolphins. During the early phases of the project, shipping of grain from the facility continued requiring work schedules to accommodate ship arrival and departure schedules.
The final phase of the project required the demolition and disposal of all the existing marine docks, grain conveyor systems, gantries, structures, and trestles. Environmental Remediation contractors were employed due to the existence of lead-based paint and asbestos containing materials. Once the existing above water structures were removed, approximately 650 16-18” treated wood and steel piling were removed and disposed at an approved recycling and disposal facilities. Approximately 150 steel piles ranging in size from 24” x .500 to 36” x 1.000 with lengths from 120’ to 175’ were driven by vibratory hammer to refusal. Main support piles were set with specified diesel driven impact hammers to refusal. The main support piles for platforms and dolphins were then core drilled, multi-strand anchors installed, grouted the entire length and tensioned to 500 kips.
The project was successfully completed within all environmental constraints which did not allow for debris in the water and required the use of floating containment systems and bubble curtains during pile driving operations.