You need to multiply the ward labs reading by 3 to get the right number. This is because they report it as the ppm of sulfur, not sulfate. Sulfur has atomic number 16, oxygen is 8, so SO4 (sulfate) is 48.
So in your case ppm of sulfate (as sulfur) is 37, ppm of sulfate (as sulfate) is 111.
This is something I learned from mabrungard here on the forum by the way