Montreal, Quebec - Remedial Construction Services, L.P. (RECON) was contracted to perform the remediation of a former refinery and a lube and grease facility in Montreal. Both locations include demolition and environmental remediation. The lube and grease facility also includes overseeing the procurement of the “above grade” asset recovery. We will manage that work as the client’s representative.
When fully operational, the refinery processed 134,000 barrels of crude oil per day. It shut down operations in 2011, and the remediation of this facility is expected to run until the end of 2015 and includes excavation, bioremediation, crushing, disposal and decontamination.
The scope of work includes the excavation, bioremediation and backfill of approximately 600,000 cubic meters of impacted soils as well as the excavation and disposal of approximately 100,000 metric tons of contaminated soils. We will demolish, crush, and backfill approximately 375,000 metric tons of concrete and excavate, remove, and recycle approximately 142,000 meters of underground piping. After decontaminating and demolishing the existing wastewater treatment plant, we will construct the newly designed wastewater treatment plant.
The lube and grease demolition includes heavy concrete structural elements, storage tanks, loading facilities, railroad facilities, and industrial process units. Subcontract elements include the disconnection and “make safe” condition for high voltage electrical power to the building and process units, asbestos abatement from piping and building components, lead base paint abatement from interior wall and floor finishes, high suction producing vacuum trucks, and offsite disposal.
The work involves the demolition, crushing, screening, and onsite re-use of over 6,500 cubic meters of demolished concrete generated from the onsite building’s structural elements and process unit foundations. To provide a substantial cost savings, the screened material is reused onsite for drainage rock and road base. As a former lube oil and grease facility, petroleum hydrocarbons are the targeted constituent for site remediation and regulatory compliance.
We will excavate, bio-treat onsite, backfill, and restore over 78,000 cubic meters of impacted soils. The treatment cells or bio-piles are constructed onsite to a height of 2.5 – 3.0 meters and contain 30,000 cubic meters of impacted soils per batch. Sampling events will identify soil quantities that meet or exceed regulatory limits and the soil will be removed and backfilled into the excavation zone of origin.
Source documentation and treatment quality control is key to replacing the “clean” soil to the original removal areas. Metal salvage of over 250 tons of reinforcing steel, railway tracks, electrical copper conductors, and miscellaneous metals were credited back to the project as an additional cost savings.