Some more info,
From the ROD:
Under the Preferred Alternative access to and use of approximately 54.6% of the Johnson Valley OHV
Area would be lost, representing a significant impact to recreation. This recreational resource is unique to
the region, given its combination of vast open space, large variety of desert views and scenic vistas, and
unique geologic formations. About 46% of the Johnson Valley OHV Area would be available during
approximately 10 months per year for public access (for the portion designated as a Shared Use Area,
which includes Hartwell Hills, the unique terrain feature known as The Hammers) or all of the year (for
the area not acquired). Even though the Marine Corps, as described and analyzed in the Final EIS, would
be conducting live-fire training in the EMUA approximately 49 weeks each year, the Marine Corps would
consider, on a case-by-case basis, and under strictly limited and controlled conditions, potential use of
portions of the EMUA for major organized OHV race events, if such events can be safely held and do not
affect military training. As training with dud-producing munitions occurs throughout the EMUA, the
areas available for consideration to host organized OHV races would become more limited. Training with
dud-producing munitions throughout the EMUA would eventually lead to range conditions that would
severely limit, if not fully preclude, recreational access. The Preferred Alternative meets the purposes of
EO 11644 to control OHV use to protect resources, promote the safety of all users of those lands, and to
minimize conflicts among the various uses of those lands. The displacement of recreational activities to
the remaining portion of the Johnson Valley OHV Area and other OHV areas would impact recreational
opportunities, particularly at areas and routes that would receive the largest relative proportions of the
displaced activities. Therefore, the Preferred Alternative would result in significant direct, indirect, and
cumulative impacts to recreational resources.
http://www.29palms.marines.mil/Porta...Palms%20CA.pdf
The way I am reading this is ~54% of JV is in the Exclusive Military Use Area (EMUA) and is essentially gone. Although they will consider opening it up for organized races, they also say eventually it will become too unsafe.
The reaming 46% will be open 10 months a year... and from what I can tell will not include live munitions... although I am not 100% sure about that.