The aggregate production facility shall be of such a design to permit production and or blending without
excessive working of the materials and the facility must be approved by the purchaser. The capacity of
the production facility should be adequate to efficiently produce the anticipated daily loadings providing
sufficient stockpiles to facilitate loadings without any delays.
b. Blending, stockpiling and other production and handling operations shall be managed by the producer to
minimize segregation of the finished product. Stockpiling operations shall minimize as practical the
breakage or excessive fall in stockpiling operations and the movement of wheeled or tracked machines
over stockpiled materials shall be limited.
c. Processed ballast shall be washed and/or rescreened as necessary to remove fine particle contamination
as defined by the specification or as directed by the individual railway company prior to stockpiling in
operations using stockpiles or immediately prior to loading operations.