This solicitation is selectively tendered to supply arrangement holders under the EW479-192534 request for supply arrangement (RFSA) for remediation construction services for northern contaminated sites and based in the Mowhi administrative zone of the Northwest Territories. The bid solicitation process is outlined in Part 6 - Supply Arrangement and Resulting Contract Clauses, B. Bid Solicitation. Suppliers without a supply arrangement may take advantage of the ongoing opportunity for qualification at https://buyandsell.gc.ca/procurement-data/tender-noti… The proposed requirement involves planned maintenance activities for the Bullmoose and Ruth mine sites including spillway constructions near a wetland area, placement of cover material over exposed tailings, scarification of select portions of site access roads, sign installation. The proposed requirement is subject to the Tlicho Land Claims and Self-Government Agreement. The requirements of the Tlicho Land Claims and Self-Government Agreement will apply to this procurement.