West Mojave Plan FEIR/S - Desert Managers Group

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Regulatory Status: Federal Endangered.Threats Affecting the Lane Mountain Milkvetch: Few threats now exist for LaneMountain milk vetch. Its low numbers make it susceptible to extinction from stochastic(unanticipated random) events. Expansion of training corridors at Fort Irwin could threaten thisspecies. Increased activity within Fort Irwin or Goldstone Deep Space CommunicationsComplex could threaten undiscovered populations of this species. Club mining activities onCoolgardie Mesa are a potential threat. Off-road travel within occupied habitat is a potentialthreat.3.3.8.10 Little San Bernardino Mountains GiliaLife History: This plant is found in dry canyons and along desert washes on alluvialfans. It requires sandy, well-aerated soil on flat ground with few or no competing species. Densestands of weedy annuals are never present at occupied sites, which are all at the margins ofstreambeds.Population Status in the Planning Area: The plant is restricted to the Little SanBernardino Mountains and the northeast portion of the San Bernardino Mountains. Of twelvemajor areas of occurrence, ten are within the western Mojave Desert. These are scattered into anumber of discrete population segments, generally defined by drainage basins and washes.Regulatory Status: BLM Sensitive.Threats Affecting the Little San Bernardino Mountains Gilia: The greatest threat tothe species is rural and suburban development near Yucca Valley and the community of JoshuaTree. A secondary threat is OHV recreation in washes. Future channelization or flood controlprojects could threaten the occupied drainages. Two of the ten West Mojave occurrences arewithin Joshua Tree National Park, one is on BLM lands, and seven are on private land.3.3.8.11 Mojave MonkeyflowerLife History: Mojave monkeyflower is found in Joshua tree woodland and creosotebush scrub communities. It favors granitic soils, and is most often found on gravelly banks ofdesert washes. Occasionally it is found in sandy openings between creosote bushes and on rockyslopes above washes, areas that are not subject to regular water flows.Population Status in the Planning Area: The Mojave monkeyflower is a restrictedendemic whose entire range is within the western Mojave Desert. All occurrences are east of theMojave River, and most are south of Barstow. Major populations are found between Victorvilleand Barstow west of Interstate 15, and in the Ord-Rodman-Newberry Mountains area.Populations in the Waterman Hills north of Barstow are not threatened.Regulatory Status: BLM Sensitive.Chapter 3 3-190
Threats Affecting the Mojave Monkeyflower: Populations between the Mojave Riverand Interstate 15 are situated in a patchwork of private and public lands. Quarries and ruraldevelopment on private land have fragmented some populations, a trend which may continue.Exchange of BLM lands for the Air Force Land Tenure Adjustment program could lead to lossof occurrences on public lands in the Brisbane Valley.Populations south of Barstow and Dagget are threatened by off-road vehicle activity.Several populations are in or adjacent to the Stoddard Valley OHV open area. Some populationsare bisected by Stoddard Valley Road and Camp Rock Road, and adjacent OHV trails haveeliminated some plants.Livestock grazing (Ord cattle allotment) occurs within this species’ range and somedamage to plants may arise from trampling. Mining does not appear to threaten Mojavemonkeyflower at this time, though expansion of quarries near Oro Grande could result in the lossof occupied habitat.Utility Corridor O traverses the western edge of the Brisbane Valley. Utility Corridor D,the Boulder Corridor, traverses the southeast edge of the Brisbane Valley unit and bisects theeastern part of the proposed Conservation Area near Daggett Ridge.Because numbers of this annual species are dependent on winter rainfall, a potentialthreat is inbreeding, genetic bottlenecks, and lack of sufficient pollinators.3.3.8.12 Mojave TarplantLife History: Mojave tarplant is found in Joshua tree woodland, creosote bush scrub,and mixed desert scrub communities at scattered locations throughout the planning area. Mojavetarplant is found near springs, seeps, wetland margins, swales and stream channels.Population Status in the Planning Area: Within the planning area, the Mojave tarplantoccurs in fairly large numbers at the base of the southern Sierra Nevada Mountains. Anhistorical locality at Mojave Forks apparently no longer supports this species. Outside theplanning area, this species occurs in the Peninsular Ranges of Riverside and San Diego counties.Regulatory Status: BLM Sensitive, California Endangered.Threats Affecting the Mojave Tarplant: Few threats are known to Mojave tarplant. Atthe historical Mojave Forks locality, extensive off-road vehicle activity has degraded the habitat.3.3.8.13 Parish's Alkali GrassLife History: Parish’s alkali grass is found in alkali seeps and springs.Population Status in the Planning Area: Parish's alkali grass is known from a singlelocation, Rabbit Springs near Lucerne Valley, on private land within the planning area. Thislocation is considered to be an important and interesting disjunct occurrence, and is in an area ofChapter 3 3-191
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CHAPTER THREEAFFECTED ENVIRONMENT3.
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The CDCA Plan assigns a “multiple
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Desert Tortoise Research Natural Ar
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closure to target shooting. Hunting
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percentage of public land ownership
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As of March 2004, BLM had acquired
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Ripley Joshua Tree Woodland: The st
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through “resource use” designat
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Significant Ecological Areas: There
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Wildlife and Wildflower Sanctuaries
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Mojave River Forks Regional Park: A
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oriented commercial uses are expect
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HCP would include mitigation measur
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3.1.3.12 City of RidgecrestThe City
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It is a goal of the town’s genera
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• Inyo California Towhee (April 1
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(i) The taking will be incidental;(
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handled, and number accidentally ki
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3.1.5 California Endangered Species
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Obtaining an Incidental Take Permit
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Monitoring: Monitoring is often the
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is so restrictive that project dela
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excess moisture. A minus 4 is consi
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Air BasinsN190I n y o C o395Ridgecr
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Federal PM10 Planning AreasN190Owen
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POLLUTANTOzone (O 3 )RespirablePart
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AIRBASINAIR QUALITYDISTRICTPOLLUTAN
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subtraction of transported ozone in
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The general soil information and ma
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The Marine Corps Ground Combat Cent
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The most permeable basin-fill depos
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Surface water was and is the major
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A relatively small number of introd
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freshwater or alkali wetlands, or o
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3.3.2 Desert Tortoise3.3.2.1 Regula
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progress toward meeting the overall
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“higher density” and “lower d
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several seasons (Esque 1994 in Aver
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Assistant District Manager Molly Br
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• Since 1975, federal land manage
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“52 mi 2 of higher density tortoi
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1984 Tortoise Range and Density Map
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Higher Density Tortoise Sign Count
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When data for the three lowest sign
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Occurrence of Tortoises Relative to
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Regional Declines in the Four DWMAs
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Tortoise Distribution within the Re
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Boarman (pers. comm., Nov 2002) has
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tortoises are either extirpated (La
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sites surveyed by LaRue between 199
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aseline data are lacking. Grasses p
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Canine Predators: This includes coy
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The spatial distribution of 12 of 1
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Predation Versus Scavenging of Juve
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Table 3-20Prevalence of Tortoises i
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(Jacobson et al. 1991, Brown et al.
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3.3.2.5.3 Older and Newer Die-off R
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Table 3-21Characteristics of Older
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Table 3-22Characteristics of Older
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of the Johnson Valley Open Area, an
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Distribution of Recreational and Re
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Tortoises and Burrows Crushed: Vehi
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TypeYearsSignCount98-99-01Distance2
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OHV Impacts to Soils: OHV use has r
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Rodman DWMA. There were no higher d
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of Dove Springs that has experience
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Both inside and adjacent to open ar
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3.3.2.6.6 Organized Competitive OHV
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3.3.2.7 Current Effectiveness of Ex
Page 139 and 140: Overall, one sees that 68% of the 3
Page 141 and 142: off regions discussed herein. Black
Page 143 and 144: ManixACECMojave fishhookcactusRainb
Page 145 and 146: Range of Mohave Ground SquirrelN190
Page 147 and 148: 3.3.3.2.2 Seasonal ActivityThe MGS
Page 149 and 150: 1996). As herbaceous annuals appear
Page 151 and 152: 1998 Mohave Ground Squirrel Transec
Page 153 and 154: Finally, the 84% success rate was a
Page 155 and 156: LaRue characterized substrates at t
Page 157 and 158: There were no MGS occurrences in 28
Page 159 and 160: certain shrubs (e.g. winterfat) tha
Page 161 and 162: NAWS China Lake 1993). As discussed
Page 163 and 164: Cumulatively, one finds there to be
Page 165 and 166: Citing Bury and Luckenbach (1977),
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Page 169 and 170: Habitat Management Plans (HMPs) wer
Page 171 and 172: Basic to the biology of bighorn she
Page 173 and 174: 3.3.6 Birds3.3.6.1 Bendire’s Thra
Page 175 and 176: 3.3.6.5 Golden EagleLife History: T
Page 177 and 178: The towhee recovery plan establishe
Page 179 and 180: Regulatory Status: Federal Endanger
Page 181 and 182: 3.3.6.15 Western Yellow-billed Cuck
Page 183 and 184: Other major threats are flood contr
Page 185 and 186: Population Status in the Planning A
Page 187 and 188: on the inaccessible mountain slopes
Page 189: 3.3.8.8 Kern BuckwheatLife History:
Page 193 and 194: 3.3.8.16 Red Rock PoppyLife History
Page 195 and 196: populations show intergradation wit
Page 197 and 198: 3.4.1.1 Regional EnvironmentIn tota
Page 199 and 200: Table 3-37Average Annual Units Cons
Page 201 and 202: 2002 SOUTHERN CALIFORNIAEMPLOYMENT
Page 203 and 204: TABLE 3-382000 CENSUS DEMOGRAPHIC C
Page 205 and 206: to undergo a dramatic reversal to t
Page 207 and 208: 3.4.1.5 Study Area Property Valuati
Page 209 and 210: The supply of private property in t
Page 211 and 212: ALLOTMENT NAME TYPE OF LIVESTOCK FO
Page 213 and 214: Grazing AllotmentsNOlanchaDarwinTun
Page 215 and 216: ALLOTMENT NAMEALLOTMENTACRESP. L. 1
Page 217 and 218: 3.4.3 Mineral Potential and Develop
Page 219 and 220: Mineral Potential, Active and Inact
Page 221 and 222: Mineral Potential, Active and Inact
Page 223 and 224: development based on the results of
Page 225 and 226: MANAGEMENT AREATable 3-46Potential
Page 227 and 228: A third item, yttrium (on the USBM
Page 229 and 230: the California Department of Conser
Page 231 and 232: Table 3-49 shows the number of mini
Page 233 and 234: produces about 75,000 tons per year
Page 235 and 236: Table 3-50Most Important Deposits B
Page 237 and 238: 3.4.3.5 Coolgardie MesaThe Coolgard
Page 239 and 240: Areas designated as regionally sign
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Recreationists engage in activities
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OPENAREADoveSpringsElMirageJawboneC
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cycle engine motorcycles in OHV rid
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One popular activity is dual sport
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Compliance With Regulations: Compli
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REGIONORCITYRidgecrestSanBernardino
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REGIONORCITYVictorville /AppleValle
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Rail: The West Mojave planning area
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Arterials: Arterials are routes wit
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Ridgecrest-Inyokern Sanitary Landfi
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approximately 3 miles south of the
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Trona-Agrus Transfer Station (SWIS
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The BLM is an agency of the U.S. De
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Route designations apply only to ro
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Utility Maintenance: Many powerline
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ACECNAME ANDNUMBERHarper Dry Lake(3
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SUBREGIONAmboyBighornCoyoteEastSier
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• All pipelines with diameters gr
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3.6.2 Energy Generation PlantsEnerg
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3.7 CULTURAL RESOURCES3.7.1 Archaeo
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seasonal movement from place to pla
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RIDGECREST FIELD OFFICEPROPERTY NAM
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ACECRose SpringFossil FallsLast Cha
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have been dated by radiocarbon and
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MYACENOZOICEPOCHTable 3-65Paleontol
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In the southern area, fossils of la
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At Twenty-Nine Palms, there is an u
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West Mojave Plan FEIR/S - Desert Managers Group

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