Change ID	Price revision ID	Prepared date	Labour CAD	Materials CAD	Equipment CAD	Subcontractors CAD	Contract-defined adjustments CAD	Total CAD	Status	Assumptions and basis	Supporting references	Prepared by	Reviewed by
CHG-017	CHG-017-R1	2026-08-08	7360	4800	1200	2500	1140	=IF(OR(A2="",B2=""),"",SUM(D2:H2))	Superseded	Initial detail before negotiation	EST-017-R1; QUOTE-442; TIME-SHEET-08	M. Tremblay	S. Nguyen
CHG-017	CHG-017-R2	2026-08-15	7360	4200	1200	2500	140	=IF(OR(A3="",B3=""),"",SUM(D3:H3))	Active	Negotiated revision linked to decision CO-012	EST-017-R2; QUOTE-449; TIME-SHEET-08	M. Tremblay	S. Nguyen
CHG-018	CHG-018-R1	2026-08-22	2400	1800	0	0	0	=IF(OR(A4="",B4=""),"",SUM(D4:H4))	Draft	Quantities to confirm in the field	EST-018-R1	S. Nguyen	Unassigned