10.10 Copper Fox Program. If by March 1 in any calendar year Teck does not propose a Program with a budget of at least $500,000 in Costs, Copper Fox may, by April 15 in that year, submit a draft Program with a budget of at least $500,000 in Costs. Copper Fox's submission of a draft Program shall be a commitment on its part to fund the entire Costs budgeted for that Program if Teck elects not to contribute. If: (a) within 15 days, Teck elects to fund its share of the Costs of Copper Fox's Program, Teck may modify the work plan, but not the budget, for the Program and carry it out; or (b) if Teck does not elect to fund its share of Costs, Copper Fox shall carry out the Program and Teck's Interest will be diluted as contemplated in §4.7; provided that, if Copper Fox completes the Program with less than 80% of the budgeted Costs having been incurred, Teck may contribute its proportionate share of the actual Costs incurred and thereby maintain its Interest.