Lead in soil can be a hazard when children play in bare soil or when people bring soil into the house on their shoes. The following two federal standards have been set for lead hazards in residential soil: 400 parts per million (ppm) and higher in play areas of bare soil; 1,200 ppm (average) and higher in bare soil in the remainder of the yard. The only way to find out if soil lead hazards exist is to test.
When staining your deck, be careful not to apply too much of the stain. You don’t want to get surface film on the wood when what you’re really going for is penetration. Also, be sure to keep a wet edge so you don’t get unsightly lap marks. Apply stain in the proper weather conditions. Avoid applying the product in direct sunlight, and be sure there is no chance of rain for the next 24 hours.