**Construction Specification 726---Topsoiling**

**1. Scope**

The work consists of salvaging topsoil from the locations shown on the
drawings. It also includes spreading the salvaged topsoil to specified
depths at locations shown on the drawings.

**2. Quality of topsoil**

Topsoil shall consist of friable surface soil reasonably free of grass,
roots, weeds, sticks, rocks, or other unsuitable material.

**3. Salvaging**

After the site has been cleared and grubbed, the topsoil shall be
removed from the locations designated on the drawings.

**4. Stockpiling**

Salvaged topsoil shall be stockpiled at locations approved by the
Engineer. Stockpiles of topsoil shall not conflict with the requirements
of Construction Specification 5, Pollution Control.

**5. Spreading**

Spreading shall not be performed when the ground or topsoil is frozen,
excessively wet, or otherwise in a condition detrimental to uniform
spreading operations. Surfaces designated to receive a topsoil
application shall be lightly scarified just before the spreading
operation. Where compacted earthfills are designated to be topsoiled,
the topsoil shall be placed concurrently with the earthfill and shall be
bonded to the compacted fill with the compacting equipment.

Following the spreading operation, the topsoil surface shall be left
reasonably smooth and without ruts or surface irregularities that could
contribute to concentrated waterflow downslope.

**6. Measurement and payment**

***Method 1---***The total surface covered by topsoil is measured and
the area(s) computed to the nearest square yard. Payment for furnishing
and placing topsoil is made at the contract unit price.

***Method 2---***The total surface covered by topsoil, except the
surface area of embankments, levees, dikes, and other earthfills not
included for payment, is measured and the area(s) computed to the
nearest square yard.

Payment for topsoil spread on the surface of embankments, levees, dikes,
and other earthfills is included in the measurement and payment for that
item of earthfill where topsoil application occurred.

***Method 3---***For items of work for which specific unit prices are
established in the contract, the volume of topsoil furnished and spread
is computed to the nearest cubic yard by the method of average
cross-sectional end areas from surveys of the excavated topsoil
stockpile or, if not stockpiled, cross-sectional surveys of the borrow
area(s). Payment for furnishing and spreading topsoil is made at the
contract unit price.

***All methods---***The following provisions apply to all methods of
measurement and payment. Compensation for any item of work described in
the contract, but not listed in the bid schedule is included in the
payment for the item of work to which it is made subsidiary. Such items
and the items to which they are made subsidiary are identified in
section 7 of this specification.

***All payment methods---***Payment will constitute full compensation
for all labor, equipment, material, and all other items necessary and
incidental to the completion of the work. This includes excavating,
stockpiling, hauling, spreading, and the wasting of unsuitable excavated
material.

**7. Items of work and construction details**

Items of work to be performed in conformance with this specification and
the construction details therefore are:

[Bid Item 11, Topsoiling]{.underline}

(1) This item shall consist of salvaging and spreading topsoil in all
    borrow areas.

(2) The borrow areas shall be stripped to a depth of 8 in. and
    stockpiled adjacent to the borrow areas. After the required borrow
    material has been removed the stockpiled topsoil shall be spread
    uniformly over the borrow area from which it was removed.

(3) Measurement and payment shall be by Method 1.