a new chemical formulation was recently developed for constructing fiberglass-reinforced plastic surfacings for soils; it consists of a polyester resin, cumene hydroperoxide catalysts, and vanadium ten-cem/n,n-dimethyl-p-toluidine solution promoter. this report documents the field testing of this new formulation with present marine corps spraying equipment. it was found that the new formulation is superior to the formulation used in the past because it: (1) provides surfacings with higher strength properties;(2) is easier to mix due to the constant ratio of 1.0 to 0.25 between catalyst and promoter for any temperature; (3) is more economical to use in temperatures below 110 f; and (4) increases pumping/spraying reliability by eliminating the catalyst material that precipitates out of the emulsion during storage and eventually causes fouling of check valves and other pumping mechanisms. furthermore, it was found that the resin used in this new formulation has a shelf life of more than 5 years based on accelerated aging tests as compared to the previously used resin, which had a guaranteed shelf life of only 4 months at the same temperatures. (author)