VAIL, CO A new resort development has been proposed for Peak 7 here, which includes 78 residential units, within two condominium buildings with skier services and a series of small mountain lodges, each comprised of 6 to 10 condominiums. A spokesperson for Vail Resorts said, “Skier days at Breckenridge have grown by 50% in the last 15 years. Our company has supported the investment of approximately $100 million in on-mountain improvements, hotel acquisitions and employee housing in Breckenridge in just three years. But the best opportunity for improving the Breckenridge ski facilities and operations lie ahead, and are reflected in this plan.” (9/14/00)