Application speeds are assumed to be over-the-ground. It is acknowledged that all aircraft have a range of acceptable air speeds for safe operations; however, when the effects of wind are considered the resulting ground speeds may vary considerably. For example, a C-130 with the ramp open and spray arms extended may have an acceptable air speed range of 145-150 knots. When flying into a 10 knot wind, the ground speed would drop to 135-140 knots, 5–10 knots below the assumed application speed of 145 knots. As the wind speed increases, this variation becomes greater. Flying with the wind results in similar, but increasing alterations of the ground speed. These variations are not included in the EDAC calculation because of the greater uncertainties associated with oil slick thickness and actual Dispersant-to-Oil Ratios (DORs).