§ 281S.4. Construction Methods

A.

Inspection

The inspection shall verify that the soil surfaces are not frozen, surface dry sufficiently to absorb toxicant and ready to receive the treatment.

B.

Application

The user shall acquire and review the current Material Safety Data Sheet (MSDS), for warnings and precautions, and shall follow the directions in the use of the product and disposal of all containers after use. The user shall apply the toxicant chemical with a low-pressure spray (less than 50 p.s.i. [345 kPa]) consistent with the manufacturer's recommendations. The diluted toxicant solution shall be applied using a metered applicator to the soil in the following locations at the rates recommended by the manufacturer:

1.

Under floor slabs-on-grade

2.

Both sides of foundation wall.

3.

Soil within 10 feet (3 meters) of building perimeter for a depth of 1 foot (0.3 meter).

4.

Expansion joints.

5.

Utility entrances.

6.

Critical locations such as where utilities pass through exterior walls and through floor slabs.

The diluted toxicant solution shall be applied immediately prior to installation of vapor barrier under slabs-on-grade or finish grading outside foundation walls.

Extra treatment shall be applied in a coarse spray to ensure uniform distribution to structure penetrations, pipe ducts and other soil penetrations. Any treated soil that is disturbed shall be retreated.

C.

Directions For Use

The user shall become fully informed of the recommended precautions in the handling and storage of the chemical toxicant, as well as the directions for use of the toxicant chemical as listed on the current MSDS and in conformance with the Uniform Fire Code, Article 86, Pesticide Storage and Display. Signs warning workers that soil poisoning has been applied shall be posted in areas of application. The signs shall be removed once the areas are covered by other construction.

D.

Retreatment

If inspection identifies the presence of termites, the soil shall be retreated and subsequently retested. The retreatment toxicant shall be the same as the original toxicant treatment.