A method to manufacture native soil flowable fill includes hydro excavating native soil to form a hole at a first excavation, and transferring the native soil from the first excavation to a mixing tank. The method also includes adding a pozzolan component, cement and water to the mixing tank, mixing the native soil in the mixing tank with the added pozzolan component, cement and water to form the native soil flowable fill, and transferring the native soil flowable fill back to the first excavation and into the hole.

An agitator assembly for mixing a product in a container is provided; the assembly may include a shaft having a distal end and an opposite proximal end. An agitator head may be attached to the distal end of the shaft. The agitator head may include a plurality of paddles extending from a base, wherein at least one of the paddles is made from a flexible material. The agitator head may include four paddles, wherein a first paddle and a second paddle may be generally aligned along a first plane, and a third paddle and a fourth paddle may be generally aligned along a second plane. The first plane may be generally perpendicular to the second plane. The first paddle and the second paddle may include a shape that is generally smaller relative to a shape of the third paddle and the fourth paddle.

Disclosed herein are methods and systems for the transportation and delivery of set-delayed cement compositions to a well site. A method of cementing may comprise preparing a set-delayed cement composition. The method further may comprise storing the set-delayed cement composition. The method further may comprise transporting the set-delayed cement composition to a well site in a containment vessel. The method further may comprise discharging the set-delayed cement composition from the containment vessel and into a wellbore.