Downwind Grid

        The Downwind Grid was constructed in the Dugway Valley on a south east to north west center line and extends north west, for thirteen miles. The grid is three miles wide at the south east end and nine miles wide at the north west end. The dense array is located on the south boundary of the Proving Ground and is commonly called the Target "S" grid.

        Access roads to the dense array area are located every 1/10 mile. Downwind sampling roads are spaced at 1/2 mile intervals for the first two miles and 1 mile intervals for the remaining nine miles.

        Sampling stations on the grid area are surveyed and installed as required by specific test programs. Portable sampling equipment, both remote and manually controlled, is used to obtain the air samples. No permanently installed power or vacuum facilities are available on this grid. Equipment can be installed to obtain data from either biological or chemical test efforts.

        A schematic diagram of the downwind grid is provided on the following page.

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