GREEN — A proposal to build a rock quarry on 65 acres south of Roseburg won approval Thursday from the Douglas County Planning Commission, despite concerns from neighboring homeowners. Joseph Leininger of Colorado Springs, Colo., and Code Family Partnership needed the planning commission’s permission to mine and crush rocks at the east end of Speedway Road in Green. The majority of the concerns were about whether blasting would disturb wells and waterlines, county Planning Manager Cheryl Goodhue said. “The applicant had an expert witness that allayed a lot of concerns that the blasting would not have a significant impact on …