Specifications include, but are not limited to: 1. All work shall be performed in accordance with the current versions of the American National Standards Institute (ANSI) A300 Pruning Standard, ANSI Z133.1 Safety Standard, and Best Management Practices - Tree Pruning (companion publication to the ANSI A300 Pruning Standard), and the Virginia Tree Policy and Safety Operation Procedures 16VAC25- 73-10. The Contractor shall follow all regulations, standards, and procedures in accordance with the Administrative Regulation Manual part III, Occupational Safety and Health Standards 1910.266, 16VAC25-60-120 and 16VAC25-60-130 of the Virginia Department of Labor and Industry and the OSHA Standards for General Industry Part 191.67(2)(viii). 2. Vertical clearance (Y) shall be achieved through removal of all overhanging tree branches to achieve a clearance as specified in Attachment I and V.C. 16 and 17. 3. Horizontal clearance (X) shall be achieved through the removal of brush and small trees, and pruning of trees along the horizontal plane from the point of reference to the width/depth, as identified within Attachment I and V.C. 16 and 17. 4. Horizontal and vertical pruning distances may be augmented for safety, sight distances and visibility needs on a case by case basis. Specific guidance shall be given in areas where sight distance requires additional pruning. These areas are expected to be very rare. 5. Remaining canopy and overhanging limbs shall be inspected and all dead, diseased, broken and defective branches (at any height) greater than four (4) inches in diameter (measured at the base of the branch) and hanging directly about the travel way or shoulder shall be removed.