2.2m Height Portable Horse Stable Equipment With Galvanized Steel Tube Stall

In 2005, the NPS prepared the Fort Barry Balloon Hangar and Motor Vehicle Sheds Abbreviated Historic Structures Report, which recommends the Balloon Hangar and Motor Vehicles Sheds as eligible for listing in the NRHP as contributing structures to the Forts Baker, Barry and Cronkhite National Register Historic District (NPS 2005). The Balloon Hanger is recommended eligible for listing in the NRHP under Criterion A at the national level for its association with the U.S. Army‘s tentative yet important experiments following WWI utilizing aerial balloons for spotting enemy targets. It is the only example of its type in the nation that housed an Army Air Service reconnaissance balloon. The Balloon Hanger is also recommended as eligible for listing in the NRHP under Criterion A at the local level for its service in two important defense-related missions for balloon use with important relevance to the local story of San Francisco harbor defense. Beginning in 1940, the hanger and vehicle sheds served as a central motor pool for vehicles assigned to the Coast Artillery units during WWII. During the Cold War, the hanger was converted into a central Ordnance Repair Shop that supported the two Nike launch sites constructed in Forts Barry and Cronkhite. Lastly, the Balloon Hanger is recommended as eligible for listing in the NRHP under Criterion C at the national level as an example for a rare surviving example of an Air Service airship Hanger. Its period of significance is 1917 to 1960. Significant features of the Balloon Hanger includes its semi-rural setting in the Marin Headlands, its gambrel shape, its large open interior space, its visible interior structures, and its corrugated siding and roofing. The Vehicle Sheds are also recommended as eligible for listing in the NRHP under Criterion A at the local level for their association with San Francisco harbor defense. In 1940, the sheds and adjacent hanger served as a central motor pool for storage and maintenance of vehicles assigned to the Coast Artillery units during WWII. During the Cold War, the sheds continued as vehicle storage for the Air Defense Units and Nike sites in the Marin Headlands. The Motor Vehicle Sheds are recommended as eligible for listing in the NRHP under Criterion C at the regional level as a sole surviving example in the San Francisco area of a once-common style of military architecture. Its period of significance is ca. 1940 to 1960. Its character-defining features include its semi-rural setting in the Marin Headlands; its long, shallow profile; its visible interior structure; and the eastern vehicle shed‘s (Vehicle Shed FA905) open bay at the northern end.

The San Rafael Monitoring Station is the closest such station to the study area and provides data for ozone, carbon monoxide, and PM10 (particulates greater than 10µm in size). (NPS 2009). As reported in the Headlands Institute EA, air quality monitoring data for years 2002–2004 indicated that air quality is generally quite good, and that ozone or carbon monoxide standards had not been exceeded in the monitoring period. National particulate standards had also not been exceeded, but state standards of a maximum 24-hour dose of 50 µm/m3 had been exceeded a total of four times (NPS 2009).

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