CHESAPEAKE, Va.--(BUSINESS WIRE)--Dollar Tree, Inc. (NASDAQ: DLTR), North America's leading operator of discount variety stores, today reported results for its second fiscal quarter ended August 1, 2015. Bob Sasser, Chief Executive Officer of Dollar Tree, stated, “I am extremely proud of Dollar Tree’s accomplishments in the second quarter. We delivered our 30th consecutive quarter of positive same-store sales, broke ground on our southeast distribution center in South Carolina, successfully com