SALVAGING TOPSOIL 205.04
203.05 Method of Measuremen T - Vacant
203.06 Basis of Payment
The Department will pay for each pay item at the con tract unit price per the specified pay unit as follows: Pay Item: Pay Unit: TEST ROLLING Lump Sum
205.01 Description
This work consists of salvaging natural topsoil from areas of excavation and embankment, stockpiling, and replacing material on the completed areas for revegetation as indicated or as directed by the Engineer.
205.02 Materials
Topsoil. Soil consisting of vegetative matter and grass roots, or exhibiting other characte ristics common to surface soils. In all cases, the top inch of the soil surface shall be a part of the salvaged material.
205.03 Equipment — Vacant
205.04 Construction Methods
Clear brush, rock, shale, or other deleterious material from topsoil salvage are as indicated. Mow weeds and grasses more than 1 ft [0.3 m] tall and incorporate into the topsoil. Excavate the topsoil and stockpile at areas approved by the Resident Engineer. Stockpiles shall be at least 50 feet from a stream or river depicted as blue on the USGS 7.5 Minute Quadrangle Map. Topsoil depths and quantities indicated are approximate; remove all topsoil from salvage areas. Replace contaminated or lost topsoil with an equivalent, Resident Engineer -approved material, at no additional cost to the Department.
A.Type A Salvaged Topsoil Type A salvaged topsoil consists of the following: Removing existing, untreated topsoil; Storing the topsoil in a stockpile; and Placing the topsoil on prepared slopes as indicated or directed by the Resident En gineer. Finish the roadway excavation and embankment areas as indicated or as directed by the Resident Engineer. Before placing the salvaged topsoil, apply fertilizer of the type and at the rate indicated.
205.06 Salvaging Topsoil
Spread the salvaged topsoil to a depth of 5 in [130 mm], unless otherwise directed by the Resident Engineer.
B.Type B Salvaged Topsoil Type B salvaged topsoil consists of the following: Removing existing, untreated topsoil; and Storing the topsoil in a stockpile. Type B, salvaged topsoil shall be mixed with sprigs to manufacture broadcast sprigging, Method B.
205.05 Method of Measuremen T
The Resident Engineer will measure Type A Salvaged Topsoil and Type B Salvaged Topsoil in a stockpile in accordance with Subsecti on 109.01.A, "Measurement of Quantities, General." The Resident Engineer will not subtract measured quantities of Type A Salvaged Topsoil and Type B Salvaged Topsoil from excavation or embankment quantities. If the Plans show Type A Salvaged Topsoil as a lump sum pay item, the Resident Engineer will not measure quantities of salvaged topsoil. Include Type A Salvaged Topsoil 50 percent complete when the material has been removed from its original location and stockpiled; and 100 percent complete when the m aterial has been placed in its final location. Include Type B Salvaged Topsoil 100 percent complete when the material has been removed from its original location and stockpiled.
205.06 Basis of Payment
The Department will pay for each pay item at the cont ract unit price per the specified pay unit as follows: Pay Item: Pay Unit:
A.TYPE A SALVAGED TOPSOIL Lump Sum or Cubic Yard [Cubic Meter]
B.TYPE B SALVAGED TOPSOIL Cubic Yard [Cubic Meter] The Department will not pay for additional handling of Type A or Type B Salvaged Topsoil . CLAY PLATING 208.05 SECTION 208 CLAY PLATING
208.01 Description
This work consists of constructing a layer of clay soil, or other material approved by the Resident Engineer, on exposed slopes composed of dispersive or erosive soils.
208.02 Materials
If the Contract does not specify plating material requirements, provide plating material in accordance with the following requirements: Plasticity Index from 8 to 18. Non -dispersive, using the Emerson Crumb Test, and either the Pinhole Test (ASTM D 4647) or Double Hydrometer Test (ASTM D 4221). Obtained in accordance with Subsection 202.04.A(4), "Borrow." From a Resident Engineer inspected and approved source .
208.03 Equipment — Vacant
208.04 Construction Methods
Before placing the plating materials, grade, shape, and level the specified portions of the exposed slopes as required by the Contract. Immediately before delivery of the plating material, dress or bench slopes as indicated. Deliver and dump the plating material at regular intervals, and in amounts that can be uniformly spread and will create layers not greater than 8 in [200 mm] deep. Compact the layers to at least 95 percent of maximum density and test in accordance with AASHTO T 99 Methods C or D. Use AASHTO T 310 (Nuclear) to determine the in -place density. Ensure the moisture content of the plating material is from optimum to 3 percentage points above optimum moisture content in accordance with AASHTO T 99. Continue placing, spreading, and compacting until the plating material reaches the final thickness indicated. Ensure the plating surface conforms to the specified slope. If sandy subgrade cannot support hauling and blading equipment without excessi ve rutting, add moisture and consolidate the subgrade or construct a temporary, plated road.
208.05 Method of Measuremen T
The Resident Engineer will measure the volume of the compacted in -place Clay Plating by multiplying the completed length of clay plati ng by the area of the cross section indicated.
Source: Oklahoma Standard Specifications for Highway Construction, 2019 Edition. Pages 145–146 of 935.