804Topsoil Spreading

804.01 Description

This Section describes the requirements for preparing and placing topsoil.

804.02 Materials

Provide materials as specified: Topsoil ................................ ................................ ................................ ................................ ......................... 917.01

804.03 Construction

804.03.01 Topsoil Spreading

Store topsoil obtained from stripping in stockpiles as specified in 202.03.03.B. Scarify the subsoil to a depth of 12 inches, in the area to be topsoiled, to improve porosity and to improve the bond between slope and topsoil. Remove from the scarified area stones 2 inches or larger in any dimension and other debris such as wires, cables, tree roots, pieces of concrete, clods, and lumps. For slopes of 2H:1V or steeper, and the RE will direct the depth of scarification to create ridges (such as by a dozer track) in the subsoil surface parallel to the bottom of the slope. After the RE has approved the prepared surface elevations, spread topsoil and smooth to grade to produce the required thickness. For slopes of 2H:1V or steeper, create ridges (such as by a dozer tr ack) in the topsoil surface parallel to the bottom of the slope to hold the seed in place and to retain moisture. Ensure that ground areas are not damaged by the delivery, handling, or storage of materials, by washouts due to drainage diversion, by workers, or by equipment. Repair such damage by grading, scarifying the subsoil to a depth of 12 inches, fertilizing, seeding, and mulching as specified in 806.03.01.

804.03.02 Borrow Topsoil

If the quantity of topsoil obtained from stripping operations is insufficient for topsoil spreading, provide borrow topsoil from off-site sources. Store borrow topsoil in stockpiles as specified in 202.03.03.B.

804.04 Measurement and Payment

The Department will measure and make payment for Items as follows: