The V-Grid facility is located twenty-three miles west of Dog Area.  It was designed in a circular shape, making it particularly suitable for the testing of chemical agents in the "V" series.  Due to the high rate of persistency of these agents, stringent safety measures govern the use of this grid and only V-type agents are tested at this site by the point source release method.

The grid has a dense array of 100 yards by 100 yards square, with samplers positioned every two yards.

Beyond the dense array are eight arcs ranging from 125 yards radius to 1500 yards radius from the grid center.  Each of these arcs contain 117 sampling positions.  The 200 yard and 500 yard radius arcs are wired for 220 volt, three phase power.  The remainder of the grid has no power requirement as a collective-type paper is used as the sampling device.  The 500 yard arc has 117 vertical samplers, 30-ft. high with a sampling station every five feet on each mast.  Four 100-ft. towers are installed on the 125 yard arc and four on the 300 ft. yard arc to obtain additional vertical sampling data ranging from the 125 meter arc to the 1000 meter arc. (These arcs are measured in meters rather than yards to differentiate them from the V-grid proper arcs).

Because this grid is used strictly for the testing of persistent toxic chemical agents and presents critical decontamination and safety problems it contains within its Command Post, facilities for personnel decontamination, a change house, clothing and equipment decontamination facilities, and a "hot" equipment area.  Vehicles are permanently assigned to this grid and not removed.

The inner, middle and outer grid arrays are presented on the following pages along with the special hard target array.

The grid center contains an A-frame, 60 feet high, which is used for the functioning of munitions. These munitions are functioned either by suspending them to simulate an air burst or by suspending a target and firing a round into it.

A special hard targets type grid has also been constructed within the V-grid proper.  It consists of 18 open and 18 half closed two-man foxholes contained in a dense array having an 85 yard radius.  The hard targets grid contains 316 sampling positions on 10 meter centers.