Chemical Decontamination with Formaldehyde of an Environmental Area Contaminated with Histoplasma capsulatum

 

Concentration: 3% formalin solution (equivalent to 1.1% formaldehyde)

 

Quantity: 1 gallon for each square foot

 

Dosing: The total volume is divided into thirds and applied on sequential days.

 

Worker protection:

(1) Workers should wear an appropriate respirator with hand and skin protection, including chemical resistant boots.

(2) Workers with allergy to formaldehyde should not take part in the operation.

 

Application:

(1) Apply the solution evenly over the target area using a sprayer.

(2) The goal is for maximum penetration into the soil with minimum puddling or run-off.

(3) It should be applied only when the outside temperature is between 60 and 90°F.

(4) Care should be taken to ensure that there is no runoff into storm sewers, streams or water courses.