1. Per approval of the FIC, piling shall take place during periods of low soil moisture to avoid unacceptable soil compaction, deep soil disturbance, and rutting typically between June to October. 2. The equipment shall gather slash and debris and place it into windrows or piles, except for scattered pieces of wood and isolated pieces of slash which the Contractor shall leave on each acre to provide shade and habitat for young trees. The size of the piled materials, the dimensions and placements of the windrows or piles includes the following along with the Project Description(s) or the approval of the FIC: a. The Contractor shall return all material pushed outside the unit boundaries during piling to the unit to pile or scatter to break up concentrations. b. The Contractor shall pile all hardwood brush species found in the forest setting (such as ninebark, ocean spray, rocky mountain maple, wild rose, etc.). c. The Contractor will emphasize windrow/pile height over width because high wellcompacted piles ignite readily and burn efficiently and cleanly. Pile guideline: a ratio of two vertical feet (2’) to three horizontal feet (3’) will result in optimum burning; e.g., a pile six feet (6’) high can be nine feet (9') wide. d. The Contractor must interrupt windrows/piles every one hundred and fifty (150’) feet by a twenty (20’) foot wide break. The Contractor shall apply the same windrow/pile height requirements as individual pile requirements. e. Pile spacing guidelines: The Contractor shall keep a minimum distance of twentyfive (25‘) feet between windrows/piles and area boundaries, main access roads, and adjacent unworked areas such as leave trees and shelterwood areas...